Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
1
Segments for arranging on and for forming a disc brush
Description
Technical Field
In one aspect, the present invention relates to a segment, in particular a
brush, cleaning,
grinding or polishing segment for arranging releasably on a rotatably
mountable carrier of a
plate, in particular in order to form a circular brush or a cleaning, grinding
or polishing disk.
In accordance with a further aspect, furthermore, the invention relates to a
carrier for forming
a circular brush, and to a correspondingly equipped circular brush which has a
carrier of this
type with a plurality of segments arranged thereon, for instance brush or
polishing segments.
Background
The use of what are known as circular brushes is well known for cleaning
sealed surfaces.
Common sweeping and cleaning machines or units have a head, that is to say a
drive head,
which is driven in a motorized manner and is correspondingly rotatable and on
which a carrier
for the circular brush is arranged fixedly for conjoint rotation. Common
circular brushes have
a disk-shaped plate body, on which a multiplicity of bristles are arranged
which are typically
arranged approximately axially in relation to the rotational axis of the plate
body, or inclined
axially and radially to the outside at a predefined angle, with the free end
facing away from
the plate body.
US 3 766 589 A has disclosed, for example, a circular brush with an upper and
with a lower
plate which are connected to one another by means of a plurality of bolts.
Individual segment
bodies which are fitted in each case with bristles can be arranged between the
plates. Those
bodies can be clamped in between the plates by way of tightening of the bolts.
Although, in
the case of a solution of this type, individual segments, fitted with
bristles, of a circular brush
can be replaced as required, the aid of tools which interact with the bolts is
however required
for the replacement of segments. Consequently, in some circumstances, the
lower plate has
to be removed and dismantled completely, which in practice is probably
possible only in the
case of a circular brush which has been dismantled completely from a sweeping
or cleaning
machine.
In contrast, the present invention is based on the object of providing an
improved plate for
forming a circular brush or for forming a cleaning, grinding or polishing disk
and segments
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which are provided for this purpose which can be mounted on the plate as
simply and intui-
tively as possible and, if required, can also be replaced individually and
independently of one
another. The mounting and/or dismantling of individual segments on and/or from
a carrier of
the circular brush is intended to take place as far as possible without tools,
that is to say
without the aid of fastening tools. The segments and the carrier which
corresponds with them
are intended to have a construction which is as simple and robust as possible.
They are
intended to be capable of being produced as simply and inexpensively as
possible. In ac-
cordance with a further aspect, the segments are intended to have an improved
environmen-
tal footprint. They are intended to be capable of being produced in a manner
which conserves
resources.
Advantageous Refinements
This object is achieved by way of a segment as claimed in independent patent
claim 1 and
by way of a carrier for forming a circular brush or for forming a cleaning,
grinding or polishing
disk as claimed in claim 13. Here, advantageous refinements are in each case
the subject
matter of dependent patent claims.
The segment which is provided according to the invention is configured and
provided for
arranging releasably on a circular, typically disk-like carrier of a circular
brush or a cleaning,
grinding or polishing disk. The segment has a segment body. If the segment is
configured as
a brush segment for forming a circular brush, a plurality of bristles or
bristle tufts protrude
from its lower side. In the case of one alternative refinement of the segment,
for instance for
forming a cleaning, grinding or polishing disk or a corresponding disk, an
abrasive grit and/or
a fiber structure, for example in the form of a woven fabric or a nonwoven,
are/is arranged
on the lower side of the segment body.
The segment body has a segment guide which extends in the radial direction in
a manner
which, in relation to the rotational axis of the carrier, is adjacent to an
inner edge which is
radially on the inside and in a manner which is spaced apart from a side edge,
lying on the
outside in relation to a circumferential direction of the carrier, of the
segment body. The seg-
ment guide is formed or configured in such a way as to interact with a carrier
guide which is
configured on the carrier or is arranged thereon in a manner which corresponds
or is com-
plementary to said segment guide, for arranging or fixing the segment on the
carrier.
The carrier guide likewise extends in the radial direction, in relation to the
rotational axis or
in relation to a central region of the carrier. The segment guide and the
carrier guide can be
elongate guides which have a predefined extent in the radial direction. The
segment guide or
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the carrier guide make an assembly direction of individual segments in the
radial direction
possible, typically from the radial outside to the radial inside. The segment
guide or the carrier
guide can be sliding guides which pass into engagement with one another
mutually consid-
erably before the final mounting position of the segments on the carrier is
reached. In this
way, particularly simple, reliable and intuitive mounting of individual
segments on the carrier
is made possible.
The segment guide and the carrier guide can have guide faces which correspond
with one
another, are rectilinear, slide along on one another, and are formed, for
example, by substan-
tially rectilinear or planar side edges and/or side cheeks, which correspond
to one another,
of the carrier guide and/or the segment guide. This makes particularly simple
and low-friction
sliding of the relevant guide faces of the segment guide and the carrier guide
along on one
another possible.
In accordance with a further refinement, the segment guide of the segment is
situated within
the segment body in relation to the axial direction. In relation to the later
axial direction of the
segment in its arrangement on the carrier, the segment guide is situated
between an upper
side which faces the carrier and a lower side of the segment body which faces
away from the
carrier. This makes a particularly simple, inexpensive and efficient
production of the segment
bodies possible. In addition, the segment bodies can be configured such that
they are free
from guide elements or guide structures which project to the outside from the
segment body
or protrude therefrom, as a result of which the robustness and durability of
the segment bod-
ies can be increased, in particular, during long-term operation.
The side edges of the segment bodies typically run in the radial direction. A
plurality of seg-
ment bodies which are arranged on the carrier typically form an annular or
circular disk-like
contour. To this extent, the individual segment bodies can be configured in
the manner of a
circular or annular segment. On account of the side edges which run in the
radial direction,
side edges of a segment which lie opposite one another taper approximately
conically toward
one another in the direction of the radial center, radially inwardly directed
imaginary exten-
sions of side edges of the segment bodies which lie opposite one another
intersecting on or
at the rotational axis of the carrier. This geometry requires that segment
bodies which adjoin
one another in the circumferential direction come into the contact position
with their mutually
facing side edges only when they reach their final mounting position on the
carrier.
By virtue of the fact that the segment guide adjoins that inner edge of the
segment body
which lies radially on the inside, an earliest possible radial guidance of
individual segment
bodies on the carrier can take place during a mounting movement which is
directed radially
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from the outside toward the inside. This simplifies the mounting. Furthermore,
the segment
guide which adjoins the inner edge of the segment body is also advantageous in
terms of
production. The segment body can be milled, cut or punched, for example, from
a blank, in
order to form a corresponding segment guide.
By virtue of the fact that the segment guide is configured or arranged on the
segment body
spaced apart from an outer side edge of the segment body, it can be achieved,
furthermore,
that the segment body requires merely a single segment guide which interacts
with a corre-
spondingly configured carrier guide, in order to guide the segment body
radially, axially and/or
tangentially on the carrier and/or to fix it thereon. This makes a reduction
of the number of
segment guides per segment body to a minimum possible, as a result of which
the complexity
of the segment body but also the complexity of the carrier guide and therefore
the complexity
of the carrier can be reduced in an advantageous way. Thus, for example, only
a single carrier
guide can be provided on the carrier for in each case one segment, which
single carrier guide
can interact with a single segment guide per segment for fixing or arranging
of the segment
on the carrier.
In accordance with a further embodiment of the segment, the segment guide is
situated at a
predefined spacing from those side edges of the segment body which lie on the
outside in
the circumferential direction. The segment guide is situated between side
edges of the seg-
ment body which lie opposite one another. The segment guide can be situated
approximately
centrally between the side edges. Furthermore, the segment guide can extend
parallel to an
imaginary center line or axis of symmetry of the segment body which runs in
the radial direc-
tion and centrally between the side edges. A segment guide which is central or
is situated
between side edges which lie opposite one another makes a particularly simple
and uncom-
plicated interaction of the segment guide with a carrier guide of
corresponding or comple-
mentary configuration thereto on the carrier possible, in particular if only a
single segment
guide is provided on the segment. The central arrangement or configuration of
the segment
guide on the segment body makes, in particular, tilt-free or cant-free
mounting of the relevant
segment on the carrier possible.
In accordance with a further refinement of the segment, one of the segment
guide and the
carrier guide has an extension which extends in the radial direction and can
be inserted into
a radially extending receptacle of corresponding configuration of the
respective other one of
the segment guide and the carrier guide. If, for example, the segment guide is
configured
with an extension which extends in the radial direction, the carrier guide has
a radially ex-
tending receptacle which corresponds thereto or is of complementary
configuration and into
which the extension of the segment guide can be inserted.
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In the case of other refinements, in the case of which the segment guide has a
receptacle
which extends in the radial direction, the carrier guide which is of
complementary or corre-
sponding configuration thereto has an extension which extends in the radial
direction and can
be inserted into the receptacle. Here, the segment or the segment body can be
pushed with
its receptacle which adjoins the radial inner edge onto a radially outwardly
extending exten-
sion which is typically provided on the lower side of the carrier.
If the segment guide is provided with a receptacle, it typically extends
radially inward from
the inner edge of the segment body. Here, that extension of the carrier guide
which is pro-
vided on the carrier typically extends radially outward. In the case of
refinements, in the case
of which the segment guide is provided with an extension, the extension
typically extends
radially inward from the inner edge of the segment body. It projects, as it
were, radially inward
from the inner edge of the segment body. Here, the carrier guide typically has
a radially in-
wardly extending receptacle.
In accordance with a further refinement, the receptacle of the segment guide
or carrier guide
is delimited in the circumferential direction by two side cheeks which lie
opposite one another.
The side cheeks are typically of corresponding configuration to side cheeks of
the extension
of the respective other one of the segment guide and the carrier guide. The
spacing of the
side cheeks in the circumferential direction of the receptacle typically
corresponds to the
spacing of side cheeks of the relevant extension which correspond thereto.
The spacing of the side cheeks of the extension is typically slightly smaller,
as viewed in the
circumferential direction, than the clear spacing of the side cheeks of the
respective recepta-
cle, with the result that the relevant extension can be inserted in a cant-
free and tilt-free man-
ner into the receptacle. The receptacle and the extension can have a
substantially rectangular
contour in relation to the plane of the segment body or the carrier. Opposite
side cheeks of
the extension and/or receptacles can extend approximately parallel to one
another. The side
cheeks can also extend, in particular, parallel to an imaginary centerline,
running in the radial
direction, of the segment or to an imaginary radially running line of the
carrier which intersects
the rotational axis.
Other contours of the extension and receptacle are also conceivable, however.
For example,
the receptacle can be configured so as to point away from its receiving edge
in the radial
direction and to taper, for example to taper acutely or conically, in the
circumferential direc-
tion. Accordingly, the extension can also have a conically or acutely tapering
free end which
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can be inserted into a receptacle which is of corresponding or complementary
configuration
thereto.
In accordance with a further refinement, the receptacle has a radial end wall.
In other words,
the receptacle is delimited in the radial direction by an end wall. The
extension of comple-
mentary configuration thereto is typically also provided with an end side
which passes into
contact with the end wall when a final mounting position of the segment on the
carrier is
reached. The mutual contact of the end wall and the end side delimits the
radially inwardly
directed mounting movement of the segment on the carrier. Via the mutual
contact position
of the end wall and the end side, the segment or the segment body is supported
radially
inward on the carrier. The end walls of the receptacle and the extension can
bear directly
against one another in the final mounting position of the relevant segment on
the carrier and,
in this regard, form mutual end stops for a defined final mounting position of
the segments
on the carrier.
This is advantageous in so far as the outer edge of the segment can project
slightly from the
carrier in the mounting position on the carrier and, as a result, can form an
outer and down-
wardly pointing edge of a circular brush or a cleaning, grinding or polishing
disk. The above-
mentioned radial support is advantageous, in particular, if the outer edge of
the segment
should collide, for example, with objects, for example a curb or a wall. As a
result, the carrier
which is typically configured from metal can be kept free of damage. Any
damage as a con-
sequence of collisions with objects is accepted for the replaceable segment
which is config-
ured as a wear part. The reusable carrier which can typically be arranged on a
cleaning or
sweeping machine is in contrast protected against corresponding damage.
In accordance with a further refinement, the end wall has a mechanical
encoding means
which is of corresponding configuration with respect to a counter-encoding
means which is
configured on the extension. The counter-encoding means is typically situated
on the end
side of the extension. The encoding means can have one or more radial
extensions or radial
depressions. For example, the mechanical encoding means can have an acutely
tapering
projection which can engage into a receptacle or depression of the counter-
encoding means,
which receptacle or depression is of corresponding or complementary
configuration thereto
and tapers in the radial direction.
Encoding means and counter-encoding means which are complementary or
correspond with
one another in the region of the end wall or in the region of the end side
make it possible that
the segment bodies which are provided for a certain carrier are equipped, for
example, with
an encoding means which corresponds to the carrier-side counter-encoding
means. Non-
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matching segment bodies which are equipped with an encoding means which does
not match
the counter-encoding means which is provided on the carrier therefore cannot
be arranged
on the carrier. In this way, it can be avoided that segment bodies which are
not provided for
a certain carrier are used with a carrier of this type, but rather that
exclusively segments or
segment bodies can be arranged on a carrier of the type which is designed for
segments or
segment bodies of this type.
Via the encoding means and counter-encoding means, in particular, a type of
positively lock-
ing connection of the receptacle and the extension, and consequently between
the segment
and the carrier, can be formed in relation to the circumferential direction of
the carrier. If the
receptacle and the extension are afflicted with a certain amount of mechanical
play or if the
extension is smaller, as viewed in the circumferential direction, by a
predefined gap size than
the clear span of the receptacle of corresponding configuration thereto,
certain play-afflicted
mounting of the segment bodies on the carrier can be provided. When the final
mounting
configuration is reached and when the encoding means engages into the counter-
encoding
means, any possible tilting of the segment relative to the carrier due to
provided gap sizes
between the receptacle and the extension can be compensated for or largely
eliminated or
prevented.
In accordance with a further refinement of the segment, the receptacle has, as
viewed in the
axial direction, a cover section which protrudes as far as the inner edge on
at least one of the
upper side or the lower side of the segment body. In this respect, the
receptacle can be of
closed configuration toward the upper side or toward the lower side of the
segment body.
The receptacle can also be configured, for example, as a blind bore, slot or
groove on the
inner edge of the segment body. It is provided in the case of some refinements
that the re-
ceptacle is of open configuration toward the lower side of the segment body
and toward the
inner edge of the segment body, but that the receptacle is closed by way of
the cover section
toward the upper side of the segment body.
The cover section extends between the side cheeks of the receptacle which lie
opposite one
another. It connects, as it were, the side cheeks of the receptacle which lie
opposite one
another. As a result, a cutout which is accessible from the lower side of the
segment is pro-
vided, which cutout can be pushed, for example, onto the extension which
corresponds to it.
This refinement proves to be advantageous, in particular, when a radially
outwardly protrud-
ing extension is arranged or configured on the lower side of the carrier,
which extension is
arranged or configured thereon with retention of an axial gap which is
accessible radially from
the outside. Here, the axial gap width corresponds to at least the axial
thickness of the cover
section. To this extent, the receptacle can be introduced with its cover
section from the radial
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outside to the radial inside into the intermediate space or into the gap
between the extension
and the lower side of the carrier or a carrier disk. In this way, axial
securing of the segment
on the carrier can already be achieved by way of plugging of the receptacle
onto the exten-
sion.
In accordance with a further refinement, the segment or the segment body is
provided with a
smooth upper side which is configured such that it is substantially free from
projections. This
makes particularly simple guidance of the segment body along the lower side of
a carrier disk
of the carrier possible. To this extent, the upper side of the segment body
can act as a sliding
face which a carrier disk of substantially planar configuration can slide
along on the lower
side until the final mounting position on the carrier is reached. As a result,
the mounting of
the segment on the carrier is simplified further.
In accordance with a further refinement, the receptacle extends continuously
from an upper
side to the lower side of the segment body. In the case of a refinement of
this type, at least
fixing of the segment body or the segment on the carrier, in relation to the
circumferential
direction, can be achieved by way of the mutual engagement of the receptacle
and the ex-
tension. Further fastening means are provided for axially fixing it. A
receptacle which extends
continuously from an upper side to the lower side of the segment body can be
realized par-
ticularly simply in terms of manufacturing technology. This makes the
configuration of the
segment body as a stamped part possible, for example.
In accordance with a further refinement of the segment, the inner wall which
lies radially on
the inside has a further mechanical encoding means which is configured to
interact with a
further counter-encoding means, of corresponding configuration with respect to
the former,
of the carrier. The further mechanical encoding means can be configured
instead of the
abovementioned mechanical encoding means on the inner edge of the segment
body. Here,
the end wall of the receptacle can be configured such that it is free from an
encoding means,
which can prove to be particularly simple in terms of manufacturing
technology, in particular,
in the case of a configuration of the receptacle as a groove. The segment body
can also,
however, be provided twice, namely with a first encoding means in the region
of the end wall
and with a second encoding means in the region of the inner edge. Here, the
double me-
chanical encoding means can provide a type of double or multiple positively
locking connec-
tion at least in the circumferential direction, with the result that a
particularly satisfactory tilt-
free and play-free final mounting position of the segment on the carrier can
be achieved.
In accordance with a further refinement of the segment, the segment body has a
securing
element which is configured to form a radial fixing means of the segment on
the carrier in a
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manner which corresponds to a counter-securing element which can be arranged
on the
carrier or is configured thereon. The securing element of the segment is
arranged on an upper
side of the segment body or is accessible from the upper side of the segment
body. The
counter-securing element can also be arranged or configured on the upper side
of the carrier
and accordingly of course can also be accessible from above. This makes
particularly simple,
possibly tool-free fixing and mounting of the segment on the carrier possible.
The securing element can be, for example, a hook which protrudes radially
outward with its
free end and can be introduced from the radial outside toward the radial
inside into a corre-
spondingly slotted region which adjoins the outer edge of a carrier disk of
the carrier. The
counter-securing element on the part of the carrier can be configured, for
example, as a
clamping closure, as a toggle lever closure or as a securing bracket which can
be actuated
without tools and which can be connected releasably in a positively locking
manner to the
hook which is configured on the segment body or is arranged thereon.
The configuration or arrangement of the securing element on the upper side of
the segment
body proves to be advantageous with regard to mounting. In order to replace a
segment on
the carrier, the carrier no longer necessarily has to be dismantled from a
sweeping or cleaning
machine. The accessibility to the securing element or counter-securing element
from the up-
per side of the carrier proves to be particularly advantageous under the
aspect of operating
comfort.
In accordance with a further refinement, the securing element is recessed,
embedded or in-
tegrated into the segment body. The securing element can be embedded or
recessed or
integrated into the upper side of the segment body in a flush-mounted manner.
The securing
element can be, for example, a drive-in nut, a weld nut, or an internal thread
of a bore in the
segment body, which bore is accessible from the top. Depending on the material
selection
for the segment body, different securing elements are used here as needed.
If, for example, the segment body is configured as a plastic body, the
securing element can
be screwed, welded or fastened in some other way to the segment body, for
example in the
form of a metal hook. Otherwise, the securing element can also be configured,
for example,
as a drive-in nut or as a weld nut which is recessed or driven in and anchored
in a positively
locking or integrally joined manner into the plastic body of the segment. A
screw opening,
screw hole and/or a screw which is arranged on the carrier can act, for
example, as counter-
securing element on the carrier.
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For radially fixing the segment body, for example, a bore which is provided
with a thread on
the upper side of the segment body can pass into contact in an aligned manner
with a through
opening on the carrier, with the result that a screw or a securing element of
the like can be
screwed in or screwed fixedly from above for axially and radially fixing the
segment body or
the segment on the carrier.
In accordance with a further refinement, the segment body is a plastic body or
metal body
which is milled or cut or punched from a blank. Plastic or metal bodies of
this type can be
produced particularly simply and efficiently. Production and manufacturing
costs for seg-
ments of this type can be reduced in this way.
All of the features which have been described above with regard to the
extension as belong-
ing to the segment guide and therefore the segment apply to embodiments, in
the case of
which the segment guide has an extension which extends in the radial
direction. In a com-
plementary manner with respect to this, all of the features which relate to
the receptacle and
have been described above apply as belonging to the carrier guide and
therefore the carrier.
All the features and advantages which have been described above with regard to
the exten-
sion as belonging to the carrier apply in the case of other refinements, in
the case of which
the extension is configured or arranged on the carrier. Analogously and in a
manner which
corresponds to this, all of the features and properties which have been
described above and
are described with regard to the receptacle apply as belonging to the segment
guide and, as
a consequence, to the segment or segment body.
In accordance with a further aspect, furthermore, the present invention
relates to a carrier for
forming a circular brush or for forming a cleaning, grinding or polishing
disk. The carrier has
a carrier disk which can be driven rotatably with regard to a rotational axis
on a sweeping or
cleaning machine. On a lower side of the carrier disk which faces the
underlying surface to
be cleaned in the case of being mounted on the relevant machine, a plurality
of carrier guides
which extend in each case in the radial direction for in each case one above-
described seg-
ment are arranged or configured thereon.
The elongate carrier guides are configured to interact with the segment guide,
of correspond-
ing configuration thereto, of each segment for arranging and/or fixing the
segment on the
carrier. The carrier guides which are configured on the carrier are of
corresponding or com-
plementary configuration and design with respect to a segment guide of the
above-described
segments. In this respect, all the features, properties and shaped parts
mentioned in relation
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to the segments and their arranging on the carrier also apply to the carrier
and the carrier
guides.
The carrier guides of the carrier and the associated segment guides can
interact with one
another in the manner of a plug/socket principle which, in particular, makes
mounting of indi-
vidual segment bodies from the radial inside to the radial outside on the
carrier or on the
carrier disk possible.
In accordance with a further refinement of the carrier, the carrier guides in
each case have a
radially outwardly protruding projection which can be inserted into a
receptacle, correspond-
ing to it, of the respective segment, which projection is arranged on the
lower side of the
carrier or on the lower side of the carrier disk with the formation of a
radially accessible axial
gap. The gap typically extends between the lower side of the carrier disk and
an upper side
of the projection.
The gap width in the axial direction is typically selected in such a way that
a cover section
which delimits the receptacle of the segment in the axial direction can be
introduced into the
intermediate space. In this way, fixing of the segment on the carrier with
regard to the cir-
cumferential direction and the axial direction can already take place by way
of the mutual
engagement of the receptacle and the extension or the carrier guide and the
segment guide.
A separate securing element is provided on the segment side merely for the
radial securing
and fixing of the segment on the carrier, which separate securing element
interacts with a
counter-securing element which is arranged on the carrier or is configured
thereon.
In accordance with a further refinement of the carrier, a plurality of counter-
securing elements
are arranged or configured on an upper side of the carrier or on the upper
side of the carrier
disk, which counter-securing elements, for radially and/or axially fixing the
respective seg-
ment, can be brought releasably into engagement with a securing element which
is provided
on the relevant segment.
The counter-securing element can be the abovementioned clamping or toggle
lever closure.
To this extent, the carrier disk can have a plurality of cutouts or through
openings, through
which in each case at least one securing element of the segment can be guided
and accord-
ingly can interact together with the counter-securing element which is
provided on the upper
side of the carrier disk, for radial and possibly also axial fixing of the
segment on the carrier.
The counter-securing element can also be, instead of a clamping closure,
merely, for exam-
ple, a through opening or a screw hole which comes to lie in alignment with a
threaded bore
or with a thread of the segment in the case of correct mounting of the segment
on the lower
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side of the carrier disk, with the result that a screw can be screwed in from
above for radial
and/or axial fixing of the segment on the carrier.
In accordance with a further refinement, the counter-securing element has a
securing bracket
which is mounted pivotably on the upper side of the carrier and can be brought
releasably
into engagement with the securing element which is arranged on the segment,
typically on
its upper side. The securing bracket can be mounted on the carrier such that
it can be pivoted,
in particular, with regard to a pivot axis between a release position and a
securing position.
The pivot axis can extend, for example, in the tangential direction, in
relation to the radial
symmetry of the carrier.
The counter-securing element is advantageously arranged on the radially inner
edge of a
cutout which penetrates the carrier. Therefore, the securing element which
protrudes axially
or upward from the upper side of the segment body can project through the
cutout from the
upper side of the carrier and can be brought into engagement there with the
counter-securing
element.
In accordance with a further refinement, the counter-securing element, in
particular its secur-
ing bracket, can be manufactured from an elastic material or can comprise at
least one elastic
material. The counter-securing element which can be deformed elastically to
this extent can
typically be brought into engagement with the securing element of the segment
only or in a
clamping manner by means of a mechanical prestress brought about by way of
elastic defor-
mation and/or with the formation of a press fit.
In this way, particularly reliable, durable and rattle-free mounting of the
segment on the carrier
is possible. By it being possible for the counter-securing element to be
brought into engage-
ment with the securing element exclusively as a consequence of an elastic
deformation, it
can exert a holding force on the segment by way of its inherent elastic
restoring forces, as
soon as it passes into engagement with the securing element, and can fix this
segment on
the carrier in the long term.
In relation to the geometry of the carrier, the counter-securing element can
be deformed
elastically in the radial direction in its securing position. It can be
deformed elastically, in
particular, when it is directed radially outward and, as soon as it passes
into engagement with
the securing element of the segment, can exert a radially inwardly directed
holding force on
the securing element and the segment which is connected to it on account of
its elastic re-
storing action.
CA 03154926 2022-4-14
13
In accordance with a further refinement, the securing element which is
arranged on the upper
side of the segment body has a securing section which protrudes in the axial
direction, that
is to say upwardly or axially approximately parallel to a surface
perpendicular of the segment
body. On its outer side which faces away from the upper side of the segment
body, this
securing section has a cutout for the counter-securing element. The counter-
securing ele-
ment can be configured, for example, as a securing bracket and can be mounted
such that it
can be pivoted with regard to a pivot axis on the carrier of the sweeping or
cleaning appa-
ratus. The securing bracket can have, in particular, an elongate shank, the
cross-sectional
geometry of which is of corresponding or complementary configuration with
respect to an
inner contour of the cutout of the securing section of the securing element.
Furthermore, the securing section can extend radially to the outside with its
end which pro-
trudes from the upper side. To this extent, the securing section forms an
undercut which is
accessible from the radial outside for the counter-securing element.
Furthermore, the shank of the counter-securing element can have a counter-
securing section
which is widened in comparison with the shank and, in the securing position,
comes to lie in
an approximately clamping manner on a cheek or side of the securing element
which lies
radially on the outside in relation to the geometry of the carrier or the
carrier disk.
In accordance with a further refinement, it is provided, in particular, that
the counter-securing
element which is manufactured for instance from an elastic material or
comprises an elastic
material can be brought into engagement with the securing element of the
segment in a
clamping manner or with the formation of a press fit when its securing
position is reached.
The cutout of the securing section of the securing element can have an inner
contour which
is slightly smaller than a region or section of the counter-securing element
which is to be
positioned therein. To this extent, the counter-securing element can be held
in a clamping
manner in the cutout of the securing element. Furthermore, the cutout can have
a circular
segment-like inner contour which extends over more than 1800 in the
circumferential direc-
tion. To this extent, the counter-securing element can be held or fixed in the
cutout of the
securing element in a clipped and therefore positively locking manner.
In addition or as an alternative to this, the counter-securing element which
is of elastic con-
figuration at least in regions can be brought into engagement with the
securing element under
a prestress which is directed in the radial direction. The segment guide and
carrier guide of
the segment and the carrier of the circular brush can form a radially inner
end stop for the
CA 03154926 2022-4-14
14
respective segment, by means of which end stop a radially inwardly directed
mounting move-
ment or positioning of the segment on the carrier is limited. That end stop
can define the final
mounting position of the segment on the carrier.
The securing element of the segment and the counter-securing element which
interacts with
it on the part of the carrier can be positioned and/or oriented with respect
to one another in
relation to the final mounting position of the segment on the carrier in such
a way that the
counter-securing section which can be brought into contact with that cheek or
side of the
securing section of the fastening element which points radially outward can be
brought into
engagement with the cutout of the securing element only or exclusively as a
consequence of
a predefined elastic expansion or dilatation of the securing bracket.
It is provided here, in particular, that the securing bracket can be brought
into engagement
with the securing section of the securing element, in particular with its
cutout, only as a con-
sequence of a radial elastic expansion or stretching in relation to its pivot
axis. When a cor-
responding mutual securing position is reached, in which the counter-securing
section which
is widened in comparison with the shank of the securing bracket bears against
the radially
outwardly directed side or cheek of the securing section of the securing
element, the shank
can exert a radially inwardly directed holding force on the securing element
and therefore on
the segment which is mounted on the carrier on account of its elastic
prestress or defor-
mation.
At a longitudinal end which faces away from the pivot axis, the securing
bracket can have a
head section which is widened in comparison with the shank. The head section
can form an
approximately T-shaped end of the shank. A head section which is configured in
this way
makes particularly simple, reliable and intuitive gripping and/or pivoting of
the securing
bracket possible. The operation and handling of the counter-securing element
is therefore
In accordance with a further aspect, the present development relates,
furthermore, to a clean-
ing, sweeping, grinding or polishing segment for arranging on a carrier in
order to form a
circular brush or in order to form a cleaning, sweeping, grinding or polishing
disk. The clean-
ing, sweeping, grinding or polishing segment has a segment body of
substantially planar
configuration. The segment body has a lower side and an upper side which lies
opposite it.
Here, the segment body can be configured for arranging on a lower side of an
above-de-
scribed carrier or an above-described carrier plate. On its lower side, the
segment body has
either a plurality of bristles, an abrasive grit or a fiber structure, in
order to act accordingly as
a sweeping, grinding or polishing segment for the formation of a corresponding
cleaning,
CA 03154926 2022-4-14
15
sweeping, grinding or polishing disk. The segment body can but does not
necessarily have
to have a segment guide which is of corresponding configuration to a carrier
guide which is
configured on the carrier.
A securing element is arranged or configured on the upper side of the segment
body. In
relation to the later arrangement on the carrier which is to be mounted
rotatably with regard
to an axis, the securing element projects in the axial direction from the
upper side of the
segment body. In particular, the securing element extends along a surface
perpendicular of
the upper side of the segment body.
In the case of this aspect, it is conceivable and provided, in particular,
that, on the part of the
carrier, typically on its lower side, a guide or receptacle for the segment
body is provided or
configured, which guide or receptacle can be brought into engagement with the
opposite side
edges of the segment body, or by means of which guide or receptacle the
opposite side
edges of the segment body can be held in a final mounting position with regard
to the axial
direction on the carrier. A carrier guide which is configured on the carrier
can provide L-
shaped guide rails which run in the radial direction, for example, for each
segment, between
which guide rails a segment body of substantially planar configuration can be
introduced in
the radial direction.
The securing element is typically situated spaced apart from the outer edge of
the segment
body which lies radially on the outside. It is preferably also situated
tangentially or spaced
apart in the circumferential direction with respect to the side edges of the
segment body which
are lateral or lie on the outside in the circumferential direction.
In relation to the provided arranging on the carrier which is to be mounted,
with regard to a
rotational axis, the securing element has an undercut, or it forms an undercut
which is acces-
sible radially from the outside and into which an above-described central
locking member can
be introduced. The undercut of the securing element has a radially outwardly
directed open-
ing, with the result that the central locking member can be introduced from
the radial outside
to the radial inside into the securing element, in order for it therefore to
be possible for a
radially inwardly directed holding or fixing force to be exerted on the
securing element and
the segment body which is connected to it.
The cleaning, sweeping, grinding or polishing segment is provided, in
particular, for an above-
described central locking system and for an above-described carrier or for an
above-de-
scribed cleaning, sweeping, grinding or polishing apparatus. To this extent,
all of the features,
CA 03154926 2022-4-14
16
advantages and possible uses shown with respect to the above-described
subjects also ap-
ply likewise to the cleaning, sweeping, grinding or polishing segment, and
vice versa.
In accordance with a further aspect, finally, a circular brush or a cleaning,
grinding or polishing
disk is provided for arranging on a cleaning, sweeping or polishing machine
which has an
above-described carrier and at least one segment which is arranged thereon.
Instead of a brush segment which is fitted with bristles, furthermore, it is
also conceivable
that no bristles, but rather merely a cleaning structure which passes into a
contact position
with a surface to be cleaned, for example in the form of a woven fabric, a
knitted fabric or a
grinding grit, is arranged on the lower side of the segment body. The
arranging of bristles
which protrude from the lower side of the segment body is merely exemplary,
and the seg-
ment body can fundamentally also be configured as a segment of a grinding or
polishing
segment, the segment body having a grinding, polishing or abrasive surface on
its lower side.
The circular brush can fundamentally be used both for use in street and
sidewalk cleaning,
and a cleaning, grinding or polishing disk can preferably be used for the
areas of interior
cleaning.
Furthermore, it is to be noted that all the features and advantages which are
described in
relation to a segment, for instance a brush segment, also apply in the same or
an analogous
way to the carrier of the circular brush and to the circular brush, and vice
versa.
Brief Description of the Figures
Further features, aims and advantages of the present invention will be
explained in the fol-
lowing description of one exemplary embodiment on the basis of the figures, in
which:
fig. 1 shows a perspective illustration of a circular
brush which is fitted with a plurality
of brush segments,
fig. 2 shows a plan view of an embodiment of a segment
body, as viewed from below,
fig. 3 shows a perspective illustration of the segment
body according to fig. 2,
fig. 4 shows an exploded illustration of the circular
brush according to fig. 1,
fig. 5 shows a cross section through the circular
brush,
CA 03154926 2022-4-14
17
fig. 6 shows an enlarged detail of the cross section
according to fig. 5,
fig. 7 shows a plan view of the holder which is
arranged on the lower side of the carrier,
fig. 8 shows a plan view of a further embodiment of a
segment, as viewed from below,
fig. 9 shows a further exemplary embodiment for
releasable arranging of a plurality of
segments on a carrier,
fig. 10 shows a plan view of one of the segments which
are shown in fig. 9,
fig. 11 shows a perspective illustration of the segment
according to fig. 10,
fig. 12 shows a further perspective illustration of a further segment,
fig. 13 shows a perspective illustration of a further
embodiment of a segment,
fig. 14 shows an exploded illustration of a further
embodiment of segments for releasa-
ble arranging on a carrier,
fig. 15 shows a perspective illustration of the
arrangement according to fig. 14,
fig. 16 shows an isolated perspective illustration of a
segment according to figs. 14 and
15,
fig. 17 shows a perspective illustration of a further
embodiment of a segment,
fig. 18 shows a perspective illustration of a plurality
of segments according to fig. 17 in
a final mounting position on a carrier with counter-securing elements which
are
situated in a release position,
fig. 19 shows a perspective illustration of the
arrangement according to fig. 18, but with
counter-securing elements which are situated in a securing position, and
fig. 20 shows an enlarged illustration of a part region
of fig. 19.
Detailed Description
CA 03154926 2022-4-14
18
Figs. 1 and 3 show a sweeping or cleaning apparatus 10 which can be mounted
rotatably
with regard to a rotational axis 1 on a sweeping or cleaning machine. The
sweeping or clean-
ing apparatus can be, for example, a circular brush. The sweeping or cleaning
apparatus 10
has a disk-like, possibly circular carrier 12 with a carrier disk 14, on the
lower side 15 of which
a plurality of brush, cleaning, grinding or polishing segments 40 are provided
and are ar-
ranged releasably, in particular replaceably. In the exemplary embodiment
which is shown,
a plurality of bristles 6 protrude downward from a lower side 41 of the
respective segments
40 approximately in the direction of a rotational axis 1 of the sweeping or
cleaning apparatus
10.
One example of a segment 40 which is configured, for example, as a brush
segment is shown
in detail in figures 2 and 3, for example. A plurality of fastening points 50
which are configured,
for example, as blind bores are provided on the lower side 41 of the segment
40, in or to
which fastening points 50 in each case individual bristles or a plurality of
bristles 6 can be
fastened in a manner known per se. Instead of brush segments 40 which are
equipped with
bristles 6 of bristle tufts, the sweeping or cleaning apparatus 10 can also
likewise be config-
ured with cleaning segments (not shown in the present case), on the lower side
of which,
which faces a surface to be machined or to be cleaned, a grinding or cleaning
pad is arranged
or configured instead of bristles. The circular brush would then not be
configured as a brush,
but rather as a cleaning, grinding or polishing disk.
The individual segments 40 which can be arranged on the carrier 12 and are of
largely iden-
tical configuration have in each case one segment body 42 which is of pie
wedge-like config-
uration or, with regard to its opposite side edges 43, 45 as shown in fig. 4,
for example, is of
wedge-shaped configuration. Figures 2, 3 and 4 show merely one of many
conceivable geo-
metrical embodiments of a segment body 42. A plurality of segment bodies 42
which are
arranged on the lower side of the carrier 12 so as to adjoin one another in
the circumferential
direction u advantageously complete one another to form a full circle or to
form a circular ring,
as is shown in fig. 4, for example. Here, a total of eight segment bodies 42
which adjoin one
another directly in the circumferential direction u form a closed
circumferential ring, each of
the segment bodies 42 being releasably arranged separately on the lower side
15 of the
carrier 12. The carrier 12 has, for example, a circular or annular, largely
planar carrier disk
14.
A plurality of what are known as carrier guides 30 are arranged or configured
on the lower
side 15 of the carrier 12, which carrier guides 30 extend in the radial
direction in relation to
the rotational axis 1. In a complementary manner with respect to the carrier
guides 37 which
CA 03154926 2022-4-14
19
are shown, for example, in fig. 7 and fig. 4, each of the segments 40 has a
segment guide 47
which extends in the radial direction in relation to the rotational axis 1 of
the carrier 12 and
so as to adjoin an inner edge 14 which lies radially on the inside. The
segment guide 47 is
typically situated spaced apart from an outer (in relation to the
circumferential direction u)
side edge 43, 44 of the respective segment body 42. The segment guide 47 is
configured to
interact with the carrier guide 37 which is provided on the carrier for
arranging the segment
40 on the carrier 12. In the exemplary embodiment of figs. 1 to 7, the segment
guide 47 in
each case has a receptacle 48 which extends in the radial direction rand is of
complementary
configuration with respect to a correspondingly radially oriented or radially
extending exten-
sion 38 of the carrier guide 37. In other words, each segment 40 can be
plugged with its
radially inwardly directed introduction opening of the receptacle 48 onto an
extension 38 of
the carrier guide 37, which extension 38 protrudes radially to the outside
with its free end.
In the case of the mounting direction from the radial outside to the radial
inside of the individ-
ual segments 40, the segment guide which adjoins the inner edge 44 enables an
earliest
possible interaction with the segment guide 47, with the result that the
introduction or the
radially inwardly directed mounting can take place particularly simply.
As shown, in particular, in figs. 2 and 3, the receptacle 48 has two side
cheeks 53, 55 which
lie opposite one another. In the example which is shown, the side cheeks 53,
55 extend
substantially parallel to one another. Furthermore, they extend parallel to an
imaginary center
or symmetry line of the segment body 42, which line runs in the radial
direction. In a compli-
mentary manner with respect thereto, the carrier guide 37 therefore has side
cheeks 33, 35
which correspond to its radially outwardly protruding extension 38 and, during
the mounting
of the segment or the segment body 42 on the carrier 12, slide along on the
side cheeks 53,
55 which are of complementary or corresponding configuration with respect
thereto.
In this way, the side cheeks 33, 35, 53, 55 which are of complementary
configuration with
respect to one another can act as a sliding or guide faces in the case of the
mounting of the
segment 40 on the carrier 12. In a manner which adjoins the inner edge 44
which lies radially
on the inside, the side cheeks 53, 55 have insertion bevels 54 which widen in
the circumfer-
ential direction toward the receiving edge and act as a centering aid and as
an insertion aid
for the extension 38.
The receptacle 48 is delimited in the radial direction by an end wall 56. The
extension 38 also
has an end side 36 which comes into contact with the end wall 56 when the
final mounting
position of the segment 40 on the carrier 12 is reached. The mutual contact
position of the
end wall 56 and the end side 36 limits a mounting movement of the segment 40
on the carrier
CA 03154926 2022-4-14
20
12. In addition, the segment 40 can be supported on the carrier 12 in the
radial direction r via
the mutual contact position of the end wall 56 and the end side 36. The width
of the extension
38 in the circumferential direction u can correspond substantially to the
clear span between
the side cheeks 53, 55. It can also be somewhat smaller, however, in order to
make particu-
larly simple, cant-free mounting of the segment 40 on the carrier 12 possible,
in particular.
As shown, in particular, in figs. 2 and 3, the end wall 56 can have an
encoding means 57
which is provided, for example, with a radial projection 58. In a
complementary or correspond-
ing manner with respect to this, the end side 36 can also have a counter-
encoding means 39
which passes into engagement in a positively locking manner with the
mechanical encoding
means 57 when the final mounting configuration is reached. Therefore, the
counter-encoding
means 39 can have a cutout or groove which corresponds to the shape of the
extension or
the projection 58. When the final mounting configuration is reached, further
fixing with an
accurate fit of the segment 40 on the carrier 12 can be achieved by way of the
mutual en-
gagement of the encoding means 57 and the counter-encoding means 39.
In the exemplary embodiment which is shown, the mechanical encoding means has
an
acutely tapering projection 58 which can be introduced into the cutout of the
counter-encod-
ing means 39, which cutout is complimentary with respect thereto and
correspondingly ta-
pers. In this way, a type of centering action in relation to the
circumferential direction u can
take place as soon as the segment body 42 reaches its final mounting position
on the carrier
12.
The exemplary embodiment which is shown of the encoding means 57 and the
counter-en-
coding means 39 is merely exemplary. For instance, the mechanical encoding
means 57 can
also have a radial cutout into which a radial extension, of corresponding
configuration with
respect thereto, of the mechanical counter-encoding means 39 of the segment
guide 37 en-
gages.
As is shown, furthermore, in figs. 2 and 3, the receptacle 48 is delimited in
the axial direction
z, that is to say in the direction parallel to the rotational axis 1, by a
cover section 59 which
protrudes as far as the inner edge 44 of the segment body 42. The cover
section 59 closes
the receptacle 48 toward the top, toward the upper side 49 of the segment body
42. The
cover section 59 can be part of the upper side 49 of the segment body 42. The
cover section
59 typically extends between the side cheeks 53, 55 of the receptacle 48 which
lie opposite
one another. It closes the receptacle 48 toward the top in the axial
direction. The receptacle
48 is open toward the bottom. That is to say, the side cheeks 53, 55 are not
delimited toward
CA 03154926 2022-4-14
21
the bottom in the axial direction, but rather merge directly into the lower
side 41 of the seg-
ment body 42 which is otherwise of substantially planar configuration. The
side cheeks 53,
55 are delimited toward the top and in the opposite axial direction by the
cover section 59.
As is apparent, in particular, from figs. 4 to 7, a disk-like intermediate
piece 20 is arranged
first of all on the lower side of the carrier disk 14. A further mechanical
encoding means 22,
for instance in the form of a wave pattern, is configured on the outer edge on
the intermediate
piece 20 which has a much smaller radius than the carrier disk 14. Finally, a
holder 30 is
arranged on the intermediate piece 20, and therefore on that lower side of the
intermediate
piece 20 which faces away from the carrier disk 14, on which holder 30 the
carrier guides 37
are configured. The holder 30 can likewise have a disk-like contour and
geometry.
Through openings 81, 82, 83 which in each case come to lie in an aligned
manner with re-
spect to one another and act as screw holes can be configured on the carrier
plate 14, the
intermediate piece 20 and on the holder 30. Via those through openings 81, 82,
83, the com-
ponents of carrier disk 14, intermediate piece 20 and holder 30 can be
connected fixedly to
one another. The outer radius or the radial external dimensions of the holder
30 are at least
slightly greater than those of the intermediate piece 20. In particular, the
carrier guides 37
which protrude radially toward the outside on the holder 30 or the extensions
38 can project
from the radial outer edge of the intermediate piece 20, as is shown, for
example, in the
enlarged illustration of fig. 6.
To this extent, an axial gap 85 is formed between the lower side 15 of the
carrier disk 14 and
an upper side of the holder 30, which upper side faces the carrier disk 14.
During the intro-
duction or plugging on of the segments 40, the cover section 59 which
protrudes onto the
upper side 49 of the segment bodies 42 passes into that gap 85. In this way,
the relevant
segment 40 or the segment body 42 can be clamped in or secured axially with
its cover
section 59 in the intermediate space or in the gap 85 between the carrier disk
14 and the
holder 30. An axial securing means of this type is achieved immediately when
the radially
inner final mounting configuration of the segment bodies 42 on the carrier 12
is reached.
Finally, the segment 40 or its segment body 42 only has to be secured or fixed
on the carrier
12 in the radial direction r.
For this purpose, in accordance with the embodiment which is shown in figs. 1
to 7, in each
case at least one upwardly projecting securing element 70 can be provided on
the upper side
49 of the segment bodies 42. In the exemplary embodiment which is shown, the
securing
element 70 is configured as a hook, the free bent-over end of which points
radially outward.
A counter-securing element 17 is situated on the upper side 16 of the carrier
disk 14 spaced
CA 03154926 2022-4-14
22
apart radially on the inside from the position of the securing element. The
counter-securing
element can be, for example, a toggle lever and/or clamping closure, for
instance with a se-
curing bracket 170, the toggle lever and/or clamping closure, or its securing
bracket 170,
interacting with the securing element 70, for instance with the hook of the
segment 40.
A closure of the counter-securing element, for example of the clamping
closure, results in a
radially inwardly directed holding force being exerted on the segment body. At
the same time,
the segment body 42 is not only secured radially, but rather also axially on
the carrier disk
14. It is advantageous here that the securing element 70 is arranged on the
upper side 49 of
the segment body 42 or is configured thereon, and that the securing element 70
is accessible
from the upper side 49 of the segment body 42, and even from the upper side 16
of the carrier
disk 14. This makes particularly simple, possibly tool-less mounting and
dismantling of the
segments 40 on and from the carrier 12 possible.
The lower side 15 of the carrier disk 14 can be configured to be substantially
smooth and free
from projections. The upper side 49 of the individual segments 40 can likewise
be of smooth
and planar configuration, with the exception of the securing element 70. Those
surfaces of
the carrier disk 14 and the segment 40 which pass into a contact position with
one another
during the mounting of the segments 40, therefore the upper side 49 which
passes into con-
tact with the lower side 15, make sliding and in this regard guided mounting
of the segments
40 on the carrier 12 possible.
In order not to impede a radially inwardly directed introduction of the
segments 40 into the
final mounting position, the carrier disk 14 can have a plurality of cutouts
18 which come to
lie in the region of the respective counter-securing element 70, in a manner
which adjoins the
outer edge of said carrier disk 14, into which cutouts 18 the upwardly
protruding securing
elements of the segment body 42 can be introduced radially to the inside.
Instead of through
openings or cutouts 18 which protrude toward the outside or into the outer
edge, furthermore,
conceivable through openings which are closed in the circumferential direction
and spaced
apart from the outer edge of the carrier disk 14 are possible, which through
openings latch,
for example, with securing elements 70 which project from the upper side 49,
or pass into
latching engagement therewith.
In this regard, the securing element 70 which projects from the upper side of
the segment
body 42 can also be configured as a latching or snap-action element which
passes in a latch-
ing manner into engagement with an opening edge of a through opening of the
carrier disk
14 as soon as the segment 40 has reached its final mounting position on the
carrier 12.
CA 03154926 2022-4-14
23
The shape of the segment body 42, which shape is configured to be
substantially planar and
free from projections, makes particularly simple and efficient and inexpensive
production pos-
sible. In particular, the segment body 42 can be configured as a plastic body
or metal body
which is milled, cut or punched from a blank. Single-piece segment bodies of
this type also
prove advantageous with regard to their environmental footprint, since they
consist only of
one material which can be recycled particularly satisfactorily.
Furthermore, as is shown, in particular, in figs. 2 and 3, the cover section
59 can be provided,
in a manner which adjoins the inner edge 44, with a further encoding means 52
which is of
corresponding or complementary configuration with respect to the counter-
encoding means
22 on that outer edge of the intermediate piece 20 which lies radially on the
outside. The
encoding means 52 and counter-encoding means 22 can be provided instead of or
in addition
to the coding means 57 and the counter-coding means 39. The coding means and
comple-
mentary counter-encoding means can ensure that exclusively the segment bodies
42 which
are provided for a certain carrier 12 can be mounted on the latter. In
contrast, segment bodies
42 or segments 40 with a non-matching encoding means or counter-encoding means
cannot
be mounted on a carrier 12 which is not provided for this purpose.
The further exemplary embodiment of the segment according to fig. 8 is
configured to be
completely free and without encoding means of this type. The inner edge 44
which lies radi-
ally on the inside is of largely planar configuration. The end wall 56 of the
receptacle 48 is
also likewise of substantially planar or rectilinear configuration.
The exemplary embodiment according to fig. 9 represents, as it were, a
kinematic reversal of
the above-described carrier guide 37 and segment guide 47. In the case of this
exemplary
embodiment which is shown in figs. 9 to 11, the holder 130 which is provided
on the carrier
12 has a plurality of carrier guides 37 which extend in the radial direction
but, in contrast to
the embodiment which is shown in figs. 1 to 7, have receptacles 138 which are
open radially
to the outside and into which extensions 148, of corresponding configuration
with respect
thereto, of the respective segments 140 can be introduced in the radial
direction, that is to
say in a radially inwardly directed manner. The receptacles 138, provided on
the carrier 12,
of the carrier guides 137 in each case have side cheeks 153, 155 which lie
opposite one
another and a radially inner end wall 156.
As shown, in particular, in figs. 10 and 11, the segment body 142 has a
segment guide 147
which extends radially inward away from the radial inner edge 144 of the
segment body 142
and, in this respect, projects radially inward from the approximately
rectilinear or arcuately
curved inner edge 144. The extension 148 can be introduced radially with an
accurate fit into
CA 03154926 2022-4-14
24
the receptacle 138 which corresponds with it. The extension 148 has side
cheeks 133, 135
which lie opposite one another, and an end side 136 which is provided at the
free end of the
extension 148. As shown, in particular, in fig. 9, the end sides 136 of the
segment bodies 142
come into contact radially with the end walls 156, of complementary
configuration with re-
spect thereto, of the receptacles 138.
It is shown in the present case that the receptacles 138, and therefore the
carrier guides 137,
are arranged on the holder 130. They might also likewise be configured on the
intermediate
piece 120 which is covered axially by an approximately disk-shaped holder 30
(not shown).
A plate which lies axially on the planar and aligned arrangement of segments
40 and holder
30 in the illustration according to fig. 9 can close the receptacles 138 in
the axial direction.
On the side which faces away from the observer, and therefore on the upper
side 149 of the
segments 140, the carrier disk 14 (not shown separately in fig. 9) lies
anyway. As shown,
furthermore, in figs. 10 and 11, the lower side 141 of the segments 40 are
provided with a
plurality of fastening points 50 for bristles or bristle tufts. The radially
outer region of the seg-
ment 140 is delimited by side edges 143, 145 which lie opposite one another
and extend
approximately in the radial direction in relation to the rotational axis 1.
The outer edge 146 is
provided in a manner which lies radially on the outside and connects the outer
edges 143,
145 to one another.
Figs. 12 and 13 show a further exemplary embodiment of a segment 240, which
further ex-
emplary embodiment has a segment body 242 and is of similar configuration to
the segment
40 according to figs. 2 and 3. In this respect, reference can be made
substantially to the
description of the segment 40, corresponding designations of the segments
which are shown
in figs. 12 and 13 being increased by the numerator 200 in comparison with the
segment 40
which is shown in figs. 2 and 3.
The segment body 242 has an outer edge 246 which lies radially on the outside,
an inner
edge 244 which lies radially on the inside, and two side edges 243, 245 which
lie opposite
one another. The segment guide 247 which lies radially on the inside and
adjoins the inner
edge 244 is configured as a receptacle 248 for an extension, of complementary
configuration
with respect thereto, of the carrier 12. The receptacle 248 is delimited
laterally (that is to say,
in the circumferential direction) by side cheeks 253, 255. The receptacle 248
is delimited in
the radial direction by an end wall 256. In contrast to the segment 40, the
segment 240 has
a receptacle 48 which extends continuously from the upper side 249 to the
lower side 241
(not shown). In other words, the side cheeks 253, 255 and the end wall 256
directly adjoin
both the upper side 249 and the merely indicated lower side 241.
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The exemplary embodiment of fig. 13 differs from that of fig. 12 in that a
mechanical encoding
means 257 is configured in the region of the end wall 256, which mechanical
encoding means
257 is configured, for example, in the manner of a toothing system. The
segment 240 can be
produced even more simply in terms of production technology than the segment
40. It can
be configured, in particular, as a punched part. For axial and/or radial
fixing of the segment
240 on the carrier 12, the segment 240 has a securing element 270 which is
integrated into
the upper side 249 in a flush-mounted manner. The securing element 270 can be,
for exam-
ple, a screw hole, a threaded bore or openings of the like in the upper side
249 of the segment
body 242. The securing element 270 can interact, for example, with a fastening
screw which
can be guided through a corresponding screw hole of the carrier disk 14.
If the segment 240 is provided as a metal body, the securing element 270 can
be configured
directly as a threaded bore. In the case of embodiments of the segment body
242 in the form
of a plastic body, a metal sleeve with an internal thread, for example a drive-
in nut, can be
embedded into the segment body 242 or can be arranged fixedly thereon, for
example. The
integration or the non-releasable arrangement of a securing element on the
segment body
242 proves advantageous with regards to mounting.
The further embodiment of a segment 340 according to figs. 14 to 16 is
relatively similar to
that of figs. 1 to 7. The holder 30 which is arranged on the lower side 15 of
the carrier disk
14 has a plurality of radially outwardly projecting carrier guides 37 which in
each case have
a radially outwardly protruding extension 38. The segment 240 has a segment
body 342 with
side edges 343, 345 which lie opposite one another, and with an inner edge 344
which lies
radially on the inside and an outer edge 346 which lies radially on the
outside.
Here, the segment guide 347 which adjoins the inner wall 344 also has a
receptacle 348
which extends in the radial direction and is delimited in the circumferential
direction by side
cheeks 353, 355 which lie opposite one another. In the axial direction,
however, the recepta-
cle 348 is of closed configuration on both sides. The segment body 342 has a
lower cover
section 351 and an opposite upper cover section 359. The clear spacing between
the side
cheeks 353, 355 which lie opposite one another corresponds substantially to
the width of the
extensions 36 as viewed in the circumferential direction u. The clear spacing
between the
cover sections 351, 359 corresponds substantially to the axial thickness or
height of the ex-
tensions 38. As is shown, in particular, in the exploded illustrations
according to figs. 14 and
15, the segment bodies 342 which are provided with the receptacle 348 which is
configured,
for example, as a blind hole or as a groove are plugged in the radial
direction onto the exten-
sions 38 of the holder 330 which are spaced apart from the lower side 15 of
the carrier disk
CA 03154926 2022-4-14
26
14 at least by the thickness of the cover section 359. Radial securing of the
individual seg-
ments 340 can take place in the way which is shown above in respect of the
other embodi-
ments.
Figures 17 to 20 show a further exemplary embodiment of the segment 440 which,
apart from
a securing element 470 which is provided on its upper side 449 there, is of
largely identical
configuration to the segments which are shown in figs. 1 to 8.
The segment 440 has a segment body 442 with side edges 443 and 445 which lie
opposite
one another. On a radially inwardly pointing inner edge 444 of the segment
body 442, a
mechanical encoding means 452 is provided in a comparable manner to the
mechanical en-
coding means 52 of the segment 40 which is shown, for example, in figs. 2 and
3.
A securing element 470 is arranged or configured on the upper side 449 of the
segment 440
or the segment body 442. In the illustration which is shown, the securing
element 470 pro-
trudes upward, that is to say in the axial direction from the upper side 449
of the segment
body 442. In a mounting position on the carrier 16, furthermore, it penetrates
its cutout 18
and in this regard comes to lie on the upper side of the carrier 16, or it
protrudes from the
upper side of the carrier 16 upward or in the axial direction.
The securing element 470 has a fastening section 471 which lies approximately
flatly on the
upper side 449 or is integrally formed thereon, and a securing section 472
which projects
approximately at a right angle therefrom and extends away from the plane of
the upper side
449. The securing section 472 has a cutout 474 which is open toward the top or
in the axial
direction. The inner edge of the cutout 478 can have a chamfer 476. The inner
edge 478 can
form an opening boundary of the cutout 474, which opening boundary has an
extent of more
than 180 in the circumferential direction.
The cutout 474 is configured to pass into engagement with a counter-securing
element 417
which is arranged pivotably on the carrier 12. The counter-securing element
417 has an elon-
gate securing bracket 430. The securing bracket 430 can be manufactured from
an elastic
material, for example from a natural or synthetic rubber or elastomer
material. The securing
bracket 430 is mounted pivotably with regard to a pivot axle 423. The pivot
axle 423 is held
by two limbs 421, 420 which protrude from the upper side 16 of the carrier 12
upward or in
the axial direction. The limbs 421, 422 and the axle 423 which penetrates the
limbs form a
pivot bearing 420 for the securing bracket 430.
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The securing sleeve 430 has an elongate shank 432 with a counter-securing
section 436
which is widened in comparison with the shank, and with a head 434 which is
widened at the
end which faces away from the axle 423. The head 434 which can be of C-shaped
configu-
ration acts as a handle, in order to transfer the counter-securing element 417
from a release
position (shown, for example, in fig. 18) into a securing position (shown in
figures 19 and 20).
The counter-securing section 436 is configured, in particular, to radially lie
in a clamping
manner on the radially outwardly pointing cheek or side of the securing
element 470. A cor-
responding clamping action can be achieved, in particular, by way of an
elastic and radial
expansion or dilatation of the shank 432. The shank 432 has an outer
circumference which
is of corresponding configuration to the geometry of the cutout 474. It can be
configured with
a slightly greater diameter, with the result that the shank 432 can be fixed
in the cutout 474
in a clamping and/or clipping manner.
That surface of the counter-securing section 436 which faces the axle 423 and
protrudes to
the outside from the shank 432 can be configured with an accurate fit or in a
complementary
manner with respect to the geometry of that inner edge 478 of the cutout 474
which is pro-
vided with a chamfer 476.
The counter-securing section 436 has an extent transversely with respect to
the longitudinal
direction of the shank 432, which extent is considerably greater than the
internal geometry of
the cutout 474. It is provided here, in particular, that, in the case of a
segment body 442 which
is situated in a final mounting position on the carrier 12, the securing
bracket 430 can be
transferred into the securing position (shown in fig. 20) only then, by the
shank 432 being
stretched or expanded radially to the outside by a predefined amount, with the
result that it
can be brought radially into contact by way of its widened counter-securing
section 436 with
the securing section 472.
The elastic deformation and the associated radially inwardly directed elastic
restoring force
of the securing bracket 430 brings about secure and durable fixing of the
segment 440 and
the segment body 442 on the carrier 12, at least in relation to the radial
direction.
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List of Designations
1 Rotational axis
6 Bristles
10 Sweeping or cleaning apparatus
12 Carrier
13 Through opening
14 Carrier disk
Lower side
10 16 Upper side
17 Counter-securing element
18 Cutout
Intermediate piece
22 Mechanical encoding means
15 30 Holder
33 Side edge
35 Side edge
36 End side
37 Carrier guide
20 38 Extension
39 Counter-encoding means
40 Segment
41 Lower side
42 Segment body
43 Side edge
44 Inner edge
45 Side edge
46 Outer edge
47 Segment guide
48 Receptacle
49 Upper side
50 Fastening point
52 Mechanical encoding means
53 Side cheek
55 Side cheek
54 Insertion bevel
56 End wall
57 Mechanical encoding means
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58 Projection
59 Cover section
70 Securing element
81 Through opening
82 Through opening
83 Through opening
85 Gap
130 Holder
133 Side cheek
135 Side cheek
136 End side
137 Carrier guide
138 Receptacle
140 Segment
141 Lower side
142 Segment body
143 Side edge
144 Inner edge
145 Side edge
146 Outer edge
147 Segment guide
148 Extension
149 Upper side
153 Side cheek
155 Side cheek
156 End wall
170 Securing bracket
240 Segment
241 Lower side
242 Segment body
243 Side edge
244 Inner edge
245 Side edge
246 Outer edge
247 Segment guide
248 Receptacle
249 Upper side
253 Side cheek
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255 Side cheek
256 End wall
257 Mechanical encoding means
270 Securing element
330 Holder
340 Segment
342 Segment body
343 Side edge
344 Inner edge
345 Side edge
346 Outer edge
347 Segment guide
348 Receptacle
353 Side cheek
355 Side cheek
351 Cover section
359 Cover section
417 Counter-securing element
420 Bearing
421 Limb
422 Limb
423 Axle
430 Securing bracket
432 Shank
434 Head
436 Counter-securing section
440 Segment
442 Segment body
443 Side edge
444 Inner edge
445 Side edge
449 Upper side
452 Mechanical encoding means
470 Securing element
471 Fastening section
472 Securing section
474 Cutout
476 Chamfer
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478 Inner edge
CA 03154926 2022-4-14
