Note: Descriptions are shown in the official language in which they were submitted.
CHAIR, IN PARTICULAR SWIVEL CHAIR
The present invention relates to chairs, in particular swivel chairs.
Chairs, in particular swivel chairs, are sufficiently known from the prior
art. In par-
ticular, the present invention relates to chairs which comprise a transmission
with
which a pivoting movement of a backrest element is coupled with a displacement
movement of a seat element (so-called synchronous mechanism). Such a trans-
mission, for example in the form of a kinematic chain, allows the seat element
to
be shifted with a predetermined path of motions correlated to the movement of
the
backrest element when the backrest element is "tilted backwards". Such a mecha-
nism is known, for example, from DE 20 2012 012 606 Ul or from EP 3 622 860
Al. In particular, the translations described here are specified by the fact
that they
ensure, via an elastic storage element, that a restoring movement is realized
for
the coupled movement sequence, whereby a return to an initial position for the
backrest and seat element is possible when the backrest or chair is no longer
loaded, i.e. is no longer used.
By coupling the displacement movement (in the following also displacing move-
ment) of the seat element and the pivoting movement of the backrest element,
it is
advantageously possible, for example, for the seat element to follow the move-
ment when the backrest element is moved backwards or "tilted backwards", thus
ensuring a lifting movement, at least in the rear section of the seat element.
This
raises the person sitting on the chair in such a way that, for example,
pulling a shirt
out of pants can be counteracted.
Based on this prior art, the present invention makes it its task to integrate
further
functionalities into a chair, in particular a swivel chair, without increasing
the com-
plexity. In particular, it should be possible to integrate further
functionalities into the
chair by using as few components as possible without having to take measures
that influence the aesthetic impression that the chair gives.
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CA 03215339 2023- 10- 12 8825429
The present problem is solved by a chair, in particular a swivel chair,
according to
claim 1. Further embodiments are to be taken from the appended claims, the de-
scription and the figures.
A chair, in particular swivel chair, is provided, comprising
- a seat element, which can be shifted by a displacement movement,
- a backrest element, which can be pivoted about a first axis with a
pivoting
movement, and
- a transmission, which couples the displacement movement to the pivoting
movement,
wherein the transmission
-- comprises a kinematic chain which has at least one elastic storage element
hav-
ing a restoring force, which returns the backrest element and seat element to
an
initial position, and
-- is pivotably connected to the seat element via a front pivot point and a
rear pivot
point respectively,
wherein the seat element is pivotable about a second axis by a joint for a
lateral
tilting movement realized in addition to the displacement movement, wherein
the
second axis extends slanted, in particular perpendicularly, to the first axis,
and
wherein the joint, in particular a cardan joint or a joint head, is preferably
inte-
grated in the rear pivot point.
Compared to the prior art, it is provided that by means of the joint a further
func-
tionality, namely a lateral tilting with a tilting movement for the seat
element is
made possible. The integration of this joint into the rear pivot point means
that no
additional components need to be installed on the underside of the seat
element,
in particular on its outer side. In particular, the rear pivot point and
especially the
joint are here integrated into an underside of the seat element. As a result,
the
component responsible for the tilting movement can be integrated into the seat
el-
ement together with the rear pivot point in such a way that it is not visible
or recog-
nizable from the outside. For example, an additional, externally located hinge
or
joint can be avoided.
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CA 03215339 2023- 10- 12 8825429
In particular, the chair is a swivel chair used, for example, in the office
sector.
Such chairs preferably have a seat carrier that allows the seat element to be
tilted
with the backrest element. Furthermore, the seat carrier preferably has a foot
area
with rolls, which makes it possible to move the chair. In this case, the
seating posi-
tion can be adapted as freely and flexibly as possible to a desk in order to
be able
to adopt a seating position that is as ergonomic as possible. The term "front"
refers
in particular to areas that are further away from the backrest than the "rear"
areas,
in particular along a horizontal direction.
It is further conceivable that the seat element comprises an upholstered
portion
and/or a seat surface portion on which a user of the chair can sit.
Furthermore, it is
conceivable that the backrest element also comprises a cushion and/or leaning
area which is held, for example, via a backrest support of the backrest
element. In
this case, the leaning area or the cushion can be designed to be deformable or
non-deformable. In this context, the person skilled in the art understands
"deform-
able" to mean that the upholstered part or the leaning area can be adapted to
the
shape of the respective back of a person sitting on the chair. In addition to
foam-
filled upholstery parts, woven or braided fabrics are also conceivable here.
For ex-
ample, it is also conceivable that a corresponding adjustment mechanism can be
used, for example, to adjust an initial position of the leaning surface
relative to the
seat surface, in particular to adjust the initial position variably.
Preferably, the displacement movement is a lifting movement, in particular a
movement along a substantially vertical direction, to provide for raising or
lowering
of the seat element when the backrest element is pivoted. In particular, the
rear
portion of the chair element is lifted and moved rearwardly. Furthermore, it
is con-
ceivable that the chair can be adjusted in height, for example by means of a
corre-
sponding telescopic mechanism in the seat carrier, independently of the
coupled
lifting movement.
In particular, a kinematic chain is to be understood as an arrangement of
several
swing elements, which are articulated to each other in order to define a
certain
path of motions.
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CA 03215339 2023- 10- 12 8825429
According to a preferred embodiment, it is provided that a single joint is
provided
for the lateral tilting movement, in particular only a single joint in the
rear pivot
point, and preferably an elasticity of the storage element supports a tilting
and/or a
return to the initial position for the seat element. In other words, there is
no need
for a joint in the front area of the seat element, and the storage elements,
which
are preferably formed in two, are hinged at the front pivot point via hinges.
These
hinges allow the storage element to be shifted relative to the seat element
about
an axis which is parallel to the first axis, but not parallel to the second
axis. In par-
ticular, it is provided that the hinge in the front pivot point for the
storage element
has a width which - measured in a direction given by the first axis - is
greater than
3 cm, preferably greater than 4 cm.
Due to the elasticity of the storage element, in particular in the case of a
defor-
mation of the storage element caused by torsion, the storage element(s) thus
sup-
port(s) the return or repatriation of the seat element to the initial position
in the
event of a deflection caused by the tilting movement. Thus, in addition to
returning
the backrest element and the seat element to the initial position, the storage
ele-
ment also returns the seat element when it has been tilted laterally about the
sec-
ond axis.
It is further provided that the second axis is substantially determined by the
course
of the seat element. In particular, this takes into account that tilting can
also occur
when the seat element is inclined in a corresponding manner by the coupled mo-
tion sequence.
Preferably, the transmission is connected to the chair support at a connection
point and the rear pivot is arranged essentially above the connection point.
Essen-
tially above means that the rear pivot is offset by no more than 10 cm to the
front
or rear in a horizontal direction. This makes it possible to ensure, in
particular, that
when the backrest element is shifted, there is essentially only a lifting
movement
and no forward or rearward pivoting movement for the seat element. In other
4
CA 03215339 2023- 10- 12 8825429
words: a comparatively small deflection is also provided for the seat element,
suffi-
cient to ensure appropriate tracking of the seated person when the backrest is
de-
flected. In addition, the articulation point is substantially below a rear
portion of the
seat element. This also provides increased legroom (to the rear) for the
seated
person. In particular, it is provided that the rear swing arm is comparatively
short,
in particular in a direction perpendicular to the seat surface, and is for
example no
longer than 20 cm.
Preferably, it is provided that the joint is a ball joint. In this way, a
corresponding
pivotable bearing in the rear pivot point, which is required for the movement
se-
quence and which is specified by the kinematic chain or the transmission
ratio, can
be ensured at the same time with a single component. Furthermore, a joint or a
ball joint can be integrated comparatively easily into the lower side of the
seat ele-
ment. Alternatively, however, an elastic plate or a "power joint" is also
suitable for
implementing the joint. A "power joint" is an elastomeric rubber joint that
can be
pivoted in all directions relative to the vertical.
Furthermore, the transmission comprises a rear swing element which connects a
backrest pivot point, about which the backrest element is pivotable about the
first
axis, to the rear pivot point on the seat element, wherein the backrest
element and
the rear swing element are rigidly connected to one another or are formed inte-
grally with one another. As a result, when the backrest element, in particular
a
backrest support, is shifted about the first axis, a movement of the rear
swing ele-
ment is simultaneously caused, thereby ensuring a direct coupling between the
backrest element and the seat element and carrying out the lifting movement.
In
particular, it is provided that the rear swing element forms a lower portion
of the
backrest element.
Preferably, it is provided that the rear swing element is formed in an arcuate
shape, in particular in a section that runs parallel to the first axis, and in
particular
that the joint is formed substantially at an apex of the arcuate course. For
exam-
ple, the arcuate course has a trapezoidal shape.
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CA 03215339 2023- 10- 12 8825429
In particular, it is provided that two kinematic chains substantially parallel
to each
other are formed as a transmission underneath the seat element, the front
section
of the kinematic chain each providing an elastic storage element, while in the
rear
section of the respective kinematic chain a common rear swing element is
formed
extending substantially transversely underneath the seat surface, in
particular a
rear section of the seat surface. This makes it possible, in an advantageous
man-
ner, for only a single joint to be used for both kinematic chains in the rear
pivot in
which the joint is integrated, as a result of which the number of components
re-
quired for carrying out all movement sequences, i.e. for the pivoting
movement, for
the tilting movement and for the displacement movement, is reduced or remains
reduced.
Furthermore, it is preferably provided that the storage element has an
elasticity
varying over its longitudinal extension. This makes it advantageously possible
to
realize a desired deformation, which is required in particular when the
articulation
point or the connection point of the seat carrier to the base element is
arranged in
a rear region of the seat element.
Preferably, it is provided that an adjustment mechanism is formed on the
storage
element with which the elasticity of the storage element can be adjusted. For
ex-
ample, it is conceivable that the elasticity or deflection of the storage
element can
be influenced by a rigid body that can be displaceably arranged on the storage
el-
ement and, for example, grips around the storage element. For example, this
could be a clamp-like structure made of plastic that extends over and
surrounds a
certain longitudinal area of the storage element. In this case, the rigid body
has an
elasticity that is smaller than that of the storage element. Depending on the
posi-
tion of this adjustment mechanism or the rigid body, there is then no or less
defor-
mation in this area, thus influencing the elasticity of the storage element.
Preferably, it is provided that an inclination of the transmission is
adjustable. For
example, it is conceivable that the base element to which the transmission and
the
backrest are attached is not fixed relative to the seat carrier and instead
allows, for
6
CA 03215339 2023- 10- 12 8825429
example, a displacement or a tilting of the entire seat base element or base
ele-
ment in order to adjust the inclination of the entire seat carrier within a
certain
range.
Preferably, the seat element comprises a return mechanism for the lateral
tilting
movement. For example, it is also conceivable that, in addition to the
restoring
force of the storage element, a further mechanism is integrated in the second
pivot
point, which is provided for returning the seat element when it is deflected
by a tilt-
ing movement, for example an additional spring.
Further advantages and features result from the following description of
preferred
embodiments of the object according to the invention with reference to the at-
tached figures. Individual features of the individual embodiment can thereby
be
combined with each other within the scope of the invention.
It shows:
Fig.1: a chair according to a preferred embodiment of
the present in-
vention,
Fig. 2 a detailed view of the chair from Fig. 1,
Fig.3 joints in a chair according to further exemplary
embodiments of
the present invention
Fig.4 the joints of Fig. 3 in an initial position and
Fig. 5 the joints from Fig. 3 in a pivoted position.
Figure 1 shows a chair 1 according to a preferred embodiment of the present in-
vention. Preferably, the chair 1 is a swivel chair, in particular an office
swivel chair.
Such chairs have a backrest element 20 and a seat element 30. In order to
realize
the most comfortable sitting possible, it is provided here that the backrest
element
7
CA 03215339 2023- 10- 12 8825429
20 is pivotably mounted about a first axis Al, for example, in order to follow
a
"leaning to the rear" of a user's back. Additionally, in the embodiment of
figure 1, it
is provided that the seat element 30 can be with a displacement movement VB.
In
this regard, the displacement movement VB is preferably a substantially
vertical
movement that ensures that a seat height is adjusted, in particular adapted to
a
degree of inclination of the backrest element 20. It is also conceivable that
only a
rear portion of the seat element 30 performs this displacement movement VB, or
that the rear portion of the seat element 30 performs a larger displacement
move-
ment VB than the front portion of the seat element 30. In particular, it is
provided
that the chair 1 comprises a transmission 40 with which the pivoting movement
SB
of the backrest element 20 is coupled or mechanically coupled to the
displacement
movement VB of the seat element 30, so that a movement sequence for the seat
element 30 is established when the backrest element 20 is pivoted. In
particular, it
is provided that - during a displacement movement VB of the backrest element
20
towards the rear - the seat element 30 or at least the rear portion of the
seat ele-
ment 30 performs a movement towards the top. In this way, it can be prevented,
for example, that a person sitting on the chair 1 and pivoting the backrest
back-
wards by a corresponding movement has to fear that an upper part, for example
a
shirt, is pulled upwards.
Here, the "front" sections are understood to be those sections that are
further
spaced or distant from the backrest element compared to the "rear" sections.
The transmission 40, through which the displacement movement VB is coupled to
the pivoting movement SB, comprises a kinematic chain. Such kinematic chains
are designed to define motion sequences, in particular by coupling a plurality
of
links, preferably swinging elements, to each other via a plurality of pivot
points.
The translation 40 as well as the backrest element 30 are thereby connected to
a
base element 18, which in turn is supported by a seat carrier 4. For this
purpose,
the base element 18 is mounted on the upper side of the seat carrier 4.
Further
components of the seat carrier 4 are a foot area 7, which is equipped, for
example,
with rolls 9, with which it is possible to move the swivel chair or the chair
1. Fur-
thermore, the seat carrier 4 comprises a pivot rod 5 about which it is
preferably
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CA 03215339 2023- 10- 12 8825429
possible to rotate the seat element 30 about a substantially vertically
extending
axis. This makes it possible to orient the seat element 30 in the desired
orienta-
tion, for example such that the chair 1 is oriented with respect to a table
for com-
fortable sitting. In particular, it is provided that the base element 18 is
mounted to
the upper end of the pivot rod 5 via a connection point 6.
The backrest element 20 preferably has an upholstery part 23 arranged on an up-
per portion of a backrest element carrier 21. The upholstery part 23 can, for
exam-
ple, be connected to the backrest element carrier 21 in a height-adjustable
manner
or be rigidly connected to the backrest element carrier 21. By upholstery part
23,
the skilled person also understands in particular an elastic mesh that adapts
to the
shape of the respective back or deforms accordingly.
The backrest element 20 is preferably rigidly connected to a rear swing
element 20
of the kinematic chain. In particular, it is provided that the rear swing
element 22
and the backrest element 20, in particular the backrest element carrier 21,
form an
integral, i.e. one-piece, component. By "one-piece" it is to be understood in
partic-
ular that the component cannot be disassembled into further partial components
without being destroyed. In this context, the backrest element 20, preferably
to-
gether with the rear swing element 22, is mounted in the base element 18 so as
to
be pivotable about a first axis Al. Furthermore, the rear swing element 22 is
pivot-
ally mounted on the seat element 30 with its section facing the seat element
30 via
a rear pivot point D2. Actuating or "tilting backwards" the backrest element
in par-
ticular ensures that the seat element 30, in particular its rear region of the
seat ele-
ment 30, is shifted upwards via the rear swing element 22.
Furthermore, the embodiment of Figure 1 provides that an elastic storage
element
8 is part of the kinematic chain. In particular, the storage element 8
connects the
base element 18 to a front portion of the seat element 30. In particular, the
elastic
storage element 8 is pivotally supported at a front pivot point D1 on the seat
ele-
ment 30. Furthermore, it is envisaged that a hinge-like component having a
hinge
axis extending parallel to the first axis is used for pivotally supporting the
storage
element 8 at the front pivot point Dl. Furthermore, it is conceivable that the
elastic
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CA 03215339 2023- 10- 12 8825429
storage element 8 is rigidly mounted on the seat element 30, for example,
and/or
is connected to the base or to the base element 18 via a connection point D3.
Thereby, the connection point D3 can be rigidly connected, for example, in the
front region of the base element 18. Preferably, however, the storage element
8
extends to the backrest pivot point D4 or to the first axis Al (concealed from
the
base element 18 in the illustration). In this case, the storage element 8 is
rigidly
mounted or fastened in the region of the first axis Al or the backrest pivot
point D4
(i.e. free of rotation), preferably to the base element 18. In other words:
While the
front end of the storage element 8 is hinged to the seat element 30, the rear
end is
rigidly attached. It is also conceivable that the storage element 8 is rigidly
mounted
to the seat element 30 with both the front end and the rear end
In particular, the elasticity of the storage element 8 ensures that the chair
1 returns
to an initial position when the seat member 30 and/or the backrest element 20
are
not loaded. In other words, the elastic storage element 8 ensures a return
move-
ment of the seat element 30 and backrest element 20 to the initial position
after
the chair 1 has left its initial position by using the coupled movement
mechanism.
In particular, it is provided that the elastic storage element 8 is arcuate at
least in
sections in the initial position, in particular runs arcuate in a front
section, i.e. in the
front third. Furthermore, it is preferably provided that the elastic storage
element 8
is substantially strip-shaped. Furthermore, two storage elements 8 extending
par-
allel to each other are provided, which extend substantially along the lateral
edges
of the seat element 30 below the seat element 30. Conceivably, the elasticity
of
the storage element 8 changes along its longitudinal direction, which is
substan-
tially determined by the direction of the seat element 30 or the course of the
seat
element 30. It is also conceivable that an adjustment mechanism is used to
adjust
the elasticity, for example to control the restoring movement. In particular,
it is en-
visaged that the base element 18 supports both the backrest element 20 and the
translation 40, and thus the seat element 30. In this regard, it is provided
that the
base element 18 is arranged substantially below a rear portion of the seat
element
30, as viewed in a vertical direction. In other words, the base element 18 is
not
centered below the center of the seat element 30.
CA 03215339 2023- 10- 12 8825429
Furthermore, it is preferably provided that the connection point 6 is arranged
sub-
stantially below the rear pivot point D2 when the chair 1 is in the initial
position or
starting position. It is further provided that the rear swing element 22 is
arcuately
shaped in a portion extending parallel to the first axis Al, and in particular
is inte-
grally shaped to provide legs for translation on the left and right sides
respectively,
each serving as the rear swing element 22. In other words: While individual
stor-
age links 8 are used for the respective kinematic chains on the left and right
sides
under the seat element 40, the same component, in particular an arcuate
section,
or a section extending in a trapezoidal shape, is used for the rear section of
the
kinematic chains on the left and right sides.
Furthermore, it is provided that the seat element 30 is designed to perform,
in ad-
dition to a displacement movement VB, at least one tilting movement KB towards
the side about a second axis A2. For this purpose, the chair 10 according to
the
embodiment of Figure 1 provides that a joint 15 is formed in the rear pivot
point D2
that enables the tilting to the side, in particular about a second axis A2,
which ex-
tends slanted to the first axis Al, preferably perpendicularly to the second
axis A2.
In particular, it is provided that the second axis A2 substantially follows
the general
course or orientation of the seat element 30, being perpendicular to the first
axis
Al. In particular, it is provided that a mechanism is provided in the rear
pivot point
D2 which allows both a lateral tilting movement KB and the rotatable support
of the
rear seat element section and thus of the whole seat element 30.
Figure 2 shows a front view of the arcuately shaped rear swing element 22. In
particular, the illustration shows the integration of the joint 15 into the
rear pivot
point D2, allowing a lateral tilting movement KB of the seat element 30 is
provided
in addition to the orientation of the rear swing element 20 to the orientation
of the
seat element 30 for realizing the displacement movement VB. For example, the
in-
tegration of the joint 15 in the rear pivot point D2 is a pivotable hinge
joint, i.e. a
pivotably mounted hinge joint. Alternatively, it is conceivable that a ball
joint is im-
plemented in the rear pivot point D2. In this case, the joint 15 and the rear
pivot
point D2 are preferably integrated into the seat element 30.
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CA 03215339 2023- 10- 12 8825429
In particular, it is preferred that for the lateral tilting movement KB the
joint 15 is
provided exclusively, which is integrated in the rear pivot point D2. In other
words:
In particular, it is provided that no joint is provided in the region of the
front pivot
point D1 or in the front pivot point D1 or that this is dispensed with. Due to
the
elastic design of the storage element 8, it is nevertheless possible that the
tilting
movement KB is also possible for the front section of the seat element 30, in
par-
ticular a rigid seat element 30. In particular, it is provided that, due to
the restoring
forces present in the storage elements 8, the storage elements 8 additionally
en-
sure that a return movement into an initial position for the seat element 30
occurs
when a tilting movement KB has tilted the seat element 30 out of its initial
position.
In this regard, it is particularly intended that the storage elements 8 cause
a corre-
sponding restoring force when they are, for example, twisted or subject to
torsion.
In this case, it proves advantageous, for example, to use strip-shaped or
ribbon-
shaped storage elements 8, since they provide the geometric prerequisites for
providing such a restoring force directed against the torsion. At their front
end, the
strip-like storage elements end in the hinge, which preferably extends over
the en-
tire width of the strip-like storage element 8.
The tilting movement KB can be realized by a ball bearing, for example. It is
also
conceivable that two mutually inclined swivel axes are used to cause a lateral
swivel movement. In this case, the tilting movement KB can, for example, be de-
signed in such a way that it takes place about at least two axes. Furthermore,
it is
conceivable that a power joint is used or a rubber element. It would also be
con-
ceivable that two plates are pivotally connected to each other and are rigidly
con-
nected to the seat element 30 and the base element 18, respectively. It is
also
conceivable that a plurality of hinge-like elements could be combined to cause
the
desired tilting motion. For example, the bearing can also be implemented using
springs, in particular one or more leaf springs, which allow a tilting
movement.
Furthermore, it is conceivable (not shown) that, for example, via an
articulated
connection of the base element 18 to the seat carrier 4, the transmission 40
can
be pivoted with the backrest element 20 in order to be able to set a preferred
initial
12
CA 03215339 2023- 10- 12 8825429
position for the user. In other words, the transmission 40 is not fixed in its
position
with respect to the seat carrier 4. Furthermore, it is preferably provided
when the
kinematic chain is free of a linkage. It is also conceivable that in the rear
pivot
point D2, in addition to the integration of the joint, a linkage guide is
provided by
means of which, for example, the hinge and the rear pivot can be moved forward
or backward, in particular together. It is also conceivable that an additional
damp-
ing member is integrated into the rear pivot point D2 and/or the joint 15 in
order to
prevent a hard stop when performing the tilting movement KB.
Figure 3 shows, by way of example, two different joints 15 which can be used
in a
chair 1 within the meaning of the present invention. In particular, it is
provided that
the joint 15 in the rear pivot point D2 is designed in such a way that both a
lateral
tilting about the second axis A2 and a change in the inclination of the seat
element
30 by a pivoting about the first axis Al or about an axis running parallel to
the first
axis Al are possible .In particular, a joint 15 is provided that allows
tilting move-
ment and pivoting movement simultaneously. For example, a cardan joint (left)
or
a rod end (right) is used as the joint 15 for this purpose. In particular, the
universal
joint provides for a first portion that is attached to the seat element 30. In
particu-
lar, the first portion of the universal joint is pivotally integrated within
the seat ele-
ment 30. In this regard, the first portion is pivotally disposed within the
seat ele-
ment 30 about the second axis A2. Preferably, the seat element 30 has a corre-
sponding recess on its underside, into which the first section of the
universal joint
is pivotably integrated or recessed. The rear swing element 22 as the second
sec-
tion of the universal joint is hinged to the first section so as to be
pivotable about
the first axis Al, so as to ensure not only the lateral tilting movement KB
but also a
change in the inclination of the seat element 30 via the pivoting movement.
Thus,
the universal joint is designed to support or cause both the lateral tilting
movement
KB and the tilting movement of the seat surface or the seat element 30.
As an alternative to the universal joint, it is also conceivable to use a
joint head
that is integrated into the seat element 30, in particular into the underside
of the
seat element 30. Such a rod end has, for example, a housing section in which a
through hole is let in. A bearing shell is arranged on the inside of this
through-bore,
13
CA 03215339 2023- 10- 12 8825429
which in turn supports an inner ring, whereby a pivoting movement adjusting
the
inclination of the seat element 30 is possible via the rod end. At the same
time, the
mounting of the inner ring on the bearing shell permits a lateral tilting
movement
about the second axis A2.
In Figure 4, the joints 15 described in more detail in Figure 3 are shown in
an ini-
tial position. In this position, the seat element 30 or the seat surface runs
essen-
tially horizontally or parallel to the floor surface. In this situation, there
is preferably
neither a displacement of the seat element 30 by an adjustment of the
inclination
of the seat element 30 about the first axis Al nor a lateral tilting by a
tilting move-
ment KB about the second axis A2.
In Figure 5, the two joints 15 of Figures 3 and 4 are shown in such a position
in
which the seat element 30 is tilted laterally by a tilting movement about the
second
axis A2.
Reference signs:
1 Chair
4 Seat carrier
5 Pivot rod
6 Connection point
7 Foot area
8 Storage element
9 Roll
15 J oint
18 Base element
20 Backrest element
21 Backrest element carrier
22 rear swing element
23 Upholstery part
30 Seat element
14
CA 03215339 2023- 10- 12 8825429
40 Transmission
Al first axis
A2 second axis
Dl front pivot point
D2 rear pivot point
D3 Connection point
D4 Backrest pivot point
KB Tilting movement
VB Displacement movement
SB Pivoting movement
CA 03215339 2023- 10- 12 8825429
