Note: Descriptions are shown in the official language in which they were submitted.
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Description
Closure Device for a Container
Technical Field
[0001] The
invention initially pertains to a closure
device for a container with a container opening, wherein
the closure device comprises a lid element for closing the
container opening, a chamber assigned to the lid element
and an inner housing, and wherein the chamber and the inner
housing furthermore have closure means and opening means,
which correspond to one another and interact with one
another in such a way that a discharge opening assigned to
the chamber as opening means can be released by
rotationally moving the closure means connected to the lid
element relative to the inner housing such that a medium
stored in the chamber can exit into the container.
Prior Art
[0002] Closure
devices of the aforementioned type are
known from the prior art. They serve for closing a
container and for simultaneously providing a chamber for
the separate storage of liquid or powdery mediums, for
example tea essences or the like, such that these mediums
do not immediately come in contact with and/or are mixed
with the contents of the container, for example water, when
the container is filled, but only at the time, at which the
closure device is removed from the container. This is
typically the time, at which the contents of the container
should be consumed.
[0003] For example, publication WO 2007/129116 Al
pertains to a closure device of the aforementioned type,
which upon opening a container closed with this closure
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device releases a supplemental liquid located in the
chamber into the container. The closure device comprises a
lid element, a chamber and an inner housing. The inner
housing has a discharge opening, into which a plug element
connected to the inner housing engages in a sealing manner.
The lid element and the inner housing are connected to one
another by means of screw threads, wherein the lid element
can be raised relative to the inner housing from a closed
position, in which the plug element closes the discharge
opening of the chamber, into a discharge position, in which
the plug element is at least partially retracted from the
discharge opening, in order to thereby produce a passage
from the chamber into the main liquid space of the
container. In this way, the medium stored in the chamber
can exit into the container, where it is mixed with the
medium located in the container.
Summary of the Invention
[0004] Based on the
above-described prior art, the
invention aims to disclose a closure device that can be
cost-effectively manufactured and at the same time makes it
possible to effectively empty the chamber in the course of
a removal of the lid element.
[0005] According
to a first solution, the invention
proposes that the closure means is a closure pin that is
rigidly connected to the chamber and has a vertical extent
with respect to the rotating direction, and in that the
closure means is over the vertical extent realized with
different regions, namely a flow-through region and a
closure region.
[0006] The
closure means preferably is a closure pin. In
this case, the closure region may be realized in the form
of a cylindrical part with an outside diameter that
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corresponds to or slightly exceeds the inside diameter of
the opening means, e.g. the discharge opening. The latter
particularly is sensible and possible if the opening means
consists in this region of an elastic, flexible material,
particularly a thermoplastic elastomer.
[0007] In
contrast, the flow-through region may be a
tapered region extending over the entire circumference or
only part of the circumference of the closure means. A
clearance space is formed when the tapered region protrudes
upward from the opening means due to a corresponding
rotation of the lid element, wherein a mass contained in
the chamber, particularly a liquid, can flow out of the
discharge opening through said clearance space. The flow-
through region also may extend entirely or partially within
the opening means in this case.
[0008] The above-defined objective is furthermore
attained with a closure device, in which the closure means
is a closure pin and the closure pin is connected to the
chamber by means of a snap-lock part. The design of the
closure means in the form of a closure pin, which is snap-
locked to the chamber, makes it possible to manufacture the
closure pin of a different material than the chamber. The
chamber also may be initially realized open on the side of
the closure means in order to thereby simplify its
manufacture, e.g. in an injection molding process. The
snap-lock connection between the closure means and the
chamber may at the same time also be used for producing a
seal in the snap-lock region.
[0009] With respect to the above-described first
solution, in particular, the closure means may
alternatively also be realized in the form of a closure pin
that is rigidly connected to the chamber.
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[0010] The
discharge opening may selectively also be
referred to as closure opening.
[0011] The
closure means, in this case particularly the
closure pin, is arranged on the chamber whereas the opening
means, in this case particularly the closure opening or
discharge opening, preferably is realized on the inner
housing. In a closed position of the closure device, the
closure pin closes the closure opening in that it either
engages into or covers the closure opening. The closure pin
is removed from the closure opening by opening the closure
device, i.e. by spacing apart the lid element from the
container - and thereby simultaneously displacing the
chamber relative to the inner housing - such that the
medium contained in the chamber can flow into the container
through the closure opening. During the manufacture of the
closure device, the chamber advantageously is inserted into
the inner housing concentrically, wherein the closure pin
is simultaneously displaced into a position, in which it
closes the closure opening. Since the closure pin is
rigidly connected to the chamber, its position and
orientation relative to the chamber are also preserved
during the assembly of the closure device such that the
closure pin automatically comes in contact with the closure
opening due to its position and orientation on the chamber.
[0012] According
to another inventive solution, it is
proposed that the lid element is, relative to the chamber
in a removal direction of the lid element, movable relative
to the container to a limited degree in a first motion
segment of the lid element in the course of a removal of
the lid element and motion-coupled to the container in a
second motion segment. In this way, the lid element can be
lifted off to a certain degree without moving along the
container.
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[0013] The lid
element particularly can be rotationally
moved relative to the chamber in the first motion segment.
[0014] It is
furthermore proposed that the lid element
preferably can be moved vertically to the chamber in the
first motion segment. The chamber therefore remains in its
originally assumed position referred to a vertical line
while the lid element is raised, for example due to an
unscrewing motion.
[0015] According to another inventive idea, it is
proposed that the opening means has an opening part, which
can be moved relative to the chamber during an opening
process and forms two circumferential sealing zones,
wherein said sealing zones are arranged concentric to one
another in a direction extending perpendicular to a moving
direction of the opening means relative to the chamber
during the opening process.
[0016] The opening
means respectively can interact with
the chamber on the two sealing zones that are arranged
concentric to one another. In this respect, it is possible
to realize an interaction with a closure pin, which is
rigidly connected to the chamber, as well as an additional
interaction with a receptacle opening on the chamber for
the opening means, which is designed so as to surround the
closure pin.
[0017] A medium
to be discharged from the chamber
preferably is under pressure. If the medium is a liquid, a
corresponding compressed gas region may be provided for
this purpose above a liquid level during the filling
process.
[0018] A reliable
seal, as well as a seal that can be
advantageously managed with respect to the manufacturing
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technology, is particularly important in connection with
such pressurized mediums.
[0019] Since two
concentric sealing zones are formed,
two circumferential regions, preferably cylindrical
regions, can be suitably encompassed in a sealing manner.
This may concern, in particular, a cylindrical inner
surface and a cylindrical outer surface of corresponding
regions of the chamber, which are encompassed by the
opening means in a sealing manner.
[0020] The
invention also pertains to a closure device
for closing a container opening of a container,
particularly a beverage bottle, wherein the closure device
comprises a lid element, a chamber arranged on the lid
element and an inner housing, and wherein the chamber and
the inner housing have closure means and opening means,
which correspond to one another and interact with one
another in such a way that a medium contained in the
chamber can exit into the container due to a motion of the
lid element relative to the inner housing.
[0021] In order
to additionally enhance a closure device
of the type in question, another solution proposes that the
closure means is a closure pin, which is connected to the
chamber by means of a snap-lock part and can be removed
from a closure opening of the inner housing that forms the
opening means by moving the lid element relative to the
inner housing.
[0022] In this
potential embodiment, the closure pin can
be manufactured separately of the chamber and accordingly
may be initially supplied in the form of a loose part in
the course of the assembly of the closure device. This
provides advantages with respect to the manufacture,
particularly with respect to the material selection. The
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closure pin therefore may simply consist of a different
material, particularly plastic material, than the chamber
that ultimately holds the closure pin.
[0023] The closure pin
preferably is snap-locked to the
chamber, e.g. by using a snap-lock part or snap-lock
section provided for this purpose. Furthermore, a welded
connection or optionally even an adhesive connection may
also be used for holding the closure pin on the chamber.
[0024] The
invention furthermore pertains to a closure
device for a container with a container opening, wherein
the closure device comprises a lid element for closing the
container opening, a chamber arranged on the lid element
and an inner housing, wherein the chamber and the inner
housing have closure means and opening means, which
correspond to one another and interact with one another in
such a way that a discharge opening assigned to the chamber
can be released by moving the lid element relative to the
inner housing such that a medium stored in the chamber can
exit into the container, and wherein the lid element
furthermore has a thread for unscrewing the closure device
from the container.
[0025] Closure devices of this type are also known from
the initially cited prior art.
[0026] In order
to develop an alternative closure device
of this type, a potential inventive solution proposes that
the inner housing has a first output recess, which is
during an unscrewing process correspondingly aligned with a
second output recess formed on the chamber due to a mere
relative rotation between the chamber and the inner
housing.
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[0027] According to the
invention, the medium stored in
the chamber can only exit into the container through the
discharge opening when the output recesses of the inner
housing and the chamber are moved into a corresponding
position. This can be achieved by simply rotating the lid
element relative to the inner housing. One of the output
recesses is moved into the corresponding position relative
to the other output recess due to this rotation. An axially
directed sliding motion may also be superimposed on the
rotational motion.
[0028] The motion of the
lid element, particularly its
rotation, preferably is limited by stops.
[0029] A discharge path
between the chamber and the
discharge opening is only produced by displacing one output
recess into the corresponding alignment with the other
output recess.
[0030] In a potential
embodiment, the closure device
acts functionally identical to a rotary slide valve.
[0031] According to another
inventive idea, it is in
this context proposed that the chamber has a (second)
output recess, which opens a discharge path due to an axial
relative displacement between the chamber and the inner
housing.
[0032] In this case, the closure device acts
functionally similar to a sliding valve. The output recess
of the chamber is axially displaced into a position, in
which a flow path from the chamber into the container
interior is released, due to the displacement of the lid
element relative to the inner housing, particularly a
rotational displacement of the lid element.
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[0033] The
output recesses may be realized in the form
of channels in the respective components or alternatively
in the form of groove-like depressions in the region of the
interacting surfaces of the inner housing and the chamber.
[0034] In
another embodiment, a (second) output recess
on the chamber side may be formed in the region of the
closure means on the chamber side and a (first) output
recess may optionally be formed corresponding thereto in
the region of the opening means on the side of the inner
housing.
[0035] The
closure pin may be realized integrally with
the chamber. In this respect, it is particularly
advantageous to manufacture the chamber including the
closure pin by means of a plastic injection molding process
such that no separate manufacturing step is required for
connecting the closure pin to the chamber. An injection
molding process is particularly advantageous in this
respect because the chamber is typically manufactured of a
plastic such as polybuteneterephthalate (PBT) or even
polypropylene (PP) or polyethylene (PE). Due to the
integral design of the closure pin on the chamber, the
position and orientation of the closure pin relative to the
chamber remain constant such that the closure pin reliably
reaches a position, in which it closes the closure opening,
during the connection of the chamber to the inner housing.
In addition to the integral design, however, it is
basically also possible to arrange the closure pin on the
chamber in a different way. For example, the closure pin
may be bonded or welded to the chamber. The closure pin or
a section carrying this closure pin may also be snapped on
the chamber such that an operationally inseparable snap-
lock connection is produced. It is essential to produce the
rigid connection between the chamber and the closure pin
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such that the closure pin cannot be separated from the
chamber during the insertion into the closure device.
[0036] It is
furthermore proposed that the closure pin
has a freely projecting closure end that can be inserted
into the closure opening. For example, the closure pin may
be arranged on the chamber wall in the form of an L-shaped
web such that the free closure end points in the direction
of the closure opening of the inner housing. If the chamber
is realized cylindrically, the end region of the closure
pin carrying the closure end is arranged on the
longitudinal axis of the chamber. Different designs of the
closure pin are basically conceivable. For example,
multiple webs arranged in a star-shaped manner may also
radially extend from the inner wall of the chamber to the
longitudinal axis, wherein the webs carry the end region
with the closure end in a star-shaped manner. In this case,
the closure pin advantageously is arranged in a portion of
the chamber, which is tapered relative to the remaining
region of the chamber in the form of a discharge region
such that the chamber has a smaller diameter in the region
of the closure pin.
[0037] In
addition, the closure end advantageously has a
diameter that essentially corresponds to the inside
diameter of the closure opening. In this case, the outside
diameter of the closure end and the inside diameter of the
closure opening are realized correspondingly such that the
closure end can be inserted into the closure opening, if
applicable with interposition of a sealing element.
Consequently, the closure pin is inserted into the closure
opening in the form of a plug. In the alternative instance,
in which the closure end is not inserted into the closure
opening, but rather closes the closure opening from
outside, it is advantageous if the closure end has a
correspondingly larger diameter than the closure opening.
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[0038] It is
proposed that a sealing element is assigned
to the closure opening and/or the closure pin in order to
close the closure opening with the closure pin in a fluid-
tight manner. A sealing element for connecting the closure
end or closure pin and the closure opening in a fluid-tight
manner is advantageous in instances, in which the closure
end of the closure pin is arranged in front of the closure
opening, as well as in instances, in which the closure end
protrudes into or even extends through the closure opening
and optionally protrudes from the underside of the closure
opening. The sealing element may be advantageously realized
in the form of a rubber seal or the like. This sealing
element may either be arranged on an edge region of the
inner housing that defines the closure opening, on the
closure end of the closure pin or on the closure opening
and on the closure pin.
[0039] A sealing
element is advantageously assigned to
the inner wall of the closure opening, wherein the inner
wall particularly is coated with the sealing material. In
this respect, it is proposed to insert the closure end of
the closure pin into the closure opening with interposition
of the sealing element/the coating. Due to the coating of
the inner side of the closure opening with a sealing
material, it is possible to realize a sealing element that
always maintains its position on the closure opening and
thereby contributes to an optimal seal of the closure
opening.
[0040] It is
furthermore proposed that the closure
opening is part of a flow channel, the length of which
corresponds to at least five times its diameter and to no
more than twenty times its diameter. The medium flowing out
of the chamber therefore has to flow through the flow
channel in order to reach the container. In this way, the
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medium is not discharged from the chamber in a surge-like
manner, but rather over a certain period of time and in the
form of a relatively fine jet. This not least promotes the
superior miscibility of the medium present in the container
with the medium flowing out of the chamber. In this case,
the closure end of the closure pin does not have to be
inserted into the flow channel over the entire length
thereof, but rather may, for example, only be inserted into
the flow channel with a longitudinal section of a few
millimeters in the region of the closure opening. This
simplifies the process of joining the chamber with the
inner housing because the closure end or the closure pin
does not have to be inserted into the flow channel over a
greater length, particularly not over the entire
longitudinal extent of the closure pin and/or the flow
channel.
[0041] It would
also be possible that the chamber has an
opening on the container side and that a snap-lock part
with U-shaped cross section encompasses an opening edge of
the opening. The opening edge of the opening preferably is
designed for snapping the snap-lock part comprising the
closure part thereon. The snap-lock cannot be operationally
disengaged.
[0042] In
addition, the (second) output recess of the
chamber may also form a lowermost region of the discharge
path in an open state of the closure. Furthermore, the
closure means that optionally comprises the output recess
preferably can also penetrate into the interior of the
container freely, i.e. not directly encompassed by sections
of the inner housing, with its free end pointing away from
the chamber in the open position of the closure.
[0043] In another
embodiment, the discharge opening on
the inner housing may form a sealing lip that abuts on the
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closure means of the chamber. If the closure means has a
circular-cylindrical design, this sealing lip preferably is
provided circumferentially and interacts with the facing
outer surface of the closure means in the closed position
of the closure, as well as in its open state.
[0044] The medium preferably is discharged under
pressure when the closure is opened. The sealing lip
abutting on the closure means is raised into an open
position by the exiting medium. After the chamber has been
emptied and the pressure exerted upon the sealing lip has
decreased accordingly, the sealing lip once again abuts on
the outer surface of the closure means due to its elastic
resilience. The arrangement and the effect of the sealing
lip counteract an uncontrolled drainage of residual amounts
of the medium (dripping).
[0045] In
another embodiment, the chamber may have a
chamber bottom, wherein the chamber bottom may transform
into a channel that has a discharge opening. In such an
embodiment, the channel bottom preferably is spaced apart
from a region of the chamber bottom in the axial direction.
This may result in a slope between the chamber bottom and
the channel, particularly the channel bottom, wherein said
slope is in a potential embodiment formed, if applicable,
exclusively by the channel wall that defines the channel
bottom in the transition to the chamber bottom.
[0046] The
channel may be closed in an annular manner,
particularly annular with respect to a rotational axis. If
applicable, the channel thereby completely surrounds the
chamber bottoM and at the same time optionally defines this
chamber bottom radially outward.
[0047] The discharge
opening may be formed in a channel
bottom and/or in a channel sidewall. In a preferred
,
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embodiment, the lowest arrangement possible of the
discharge opening is realized if the discharge opening is
respectively arranged or formed in the channel bottom. In
this case, a center axis of the discharge opening may
respectively extend essentially perpendicular to the
chamber bottom or to a bottom plane that is aligned
transverse to the rotational axis.
[0048] If the
discharge opening is respectively arranged
or formed in the region of the channel sidewall, the
discharge flow of the medium from the chamber is directed
radially outward starting from the channel. Such a
discharge opening preferably is also formed within the
axial height of the channel and optionally at least tangent
to the channel bottom.
[0049] Furthermore, the discharge opening may be
arranged in the channel bottom, as well as in the channel
sidewall, by optionally providing a discharge opening in
the channel bottom and a discharge opening in the channel
sidewall. In addition, a discharge opening may - with
respect to a cross section - only be provided in a
transition region from the channel bottom into the channel
sidewall.
[0050] Multiple
discharge openings may also be formed
over the circumference of the channel, namely either only
in the region of the channel bottom or only in the region
of the channel sidewall, but optionally also alternately in
the region of the channel bottom and the channel sidewall.
[0051] In a
potential embodiment, the chamber bottom may
comprise a soft plastic layer, particularly for interacting
with the closure means in a sealing manner. The closure
means preferably interacts with the soft plastic layer, in
particular, in the closed position. In another potential
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and preferred embodiment, the soft plastic layer extends
into the region of the channel, particularly including the
region of the discharge opening.
[0052] The soft
plastic layer furthermore may extend
over the channel bottom and/or the channel sidewall.
[0053] In this
case, the discharge opening optionally
may be formed only in the soft plastic layer. Accordingly,
the soft plastic layer extends into the region of the
discharge opening in this case, preferably such that it
completely forms the wall of the discharge opening.
[0054] The closure means may penetrate into the
discharge opening in a pin-like manner in order to tightly
close the discharge opening. In an alternative embodiment,
the closure means acts like a slide.
[0055] For
example, a thermoplastic elastomer may be
used for manufacturing the soft plastic layer.
Brief Description of the Drawings
[0056] The
invention is described in greater detail
below with reference to exemplary embodiments. In the
drawings:
Figure 1 shows a
vertical section through a closure
device according to a first embodiment;
Figure 2 shows the closure device according to
Figure 1 in an arrangement on a container
that concerns the closed position;
Figure 3 shows an enlarged
detail of the region III
in Figure 2;
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Figure 4 shows an illustration that corresponds to
Figure 2, but concerns the discharge
position;
Figure 5 shows an enlarged detail of the region V
in Figure 4;
Figure 6 shows an illustration that corresponds to
Figure 2 and concerns a second embodiment;
Figure 7 shows an enlarged detail of the region VII
in Figure 6;
Figure 8 shows the closure device according to the
second embodiment in a discharge position;
Figure 9 shows an enlarged detail of the region IX
in Figure 8;
Figure 10 shows an illustration that corresponds to
Figure 9 and concerns an additional
alternative embodiment;
Figure 11 shows an illustration that corresponds to
Figure 2 and concerns an additional
alternative embodiment;
Figure 12 shows an enlarged detail of the region XII
in Figure 11;
Figure 13 shows the discharge position of the
additional embodiment;
Figure 14 shows an enlarged detail of the region XIV
in Figure 13;
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Figure 15 shows a section that essentially
corresponds to Figure 11 and concerns an
additional embodiment;
Figure 16 shows a section along the line XVI-XVI in
Figure 15;
Figure 17 shows an enlarged detail of the region
XVII and Figure 15;
Figure 18 shows an illustration that corresponds to
Figure 13 and concerns the embodiment
according to Figures 15 to 17;
Figure 19 shows an enlarged detail of the region XIX
in Figure 18;
Figure 20 shows a section through a closure device
according to an additional embodiment,
wherein said section essentially
corresponds to Figure 2 and concerns the
closed position;
Figure 21 shows an enlarged detail of the region XXI
in Figure 20;
Figure 22 shows a section that corresponds to Figure
20, but concerns the discharge position;
and
Figure 23 shows an enlarged illustration that
corresponds to Figure 21 and concerns the
region XXIII in Figure 22.
Description of the Embodiments
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[0057] A closure
device 1 with a chamber 6 having a
lower opening is illustrated in the figures and described
below, wherein an opening means, which makes it possible to
empty the chamber 6, is provided relative to said chamber
opening. The opening means specifically consists of an
opening part, which in this exemplary embodiment
particularly is formed by a sealing element 10. This
opening part comprises two circumferential sealing zones,
namely a sealing zone, which preferably is formed on an
outer circumferential surface of the opening means that
interacts with an inner surface of the chamber 6, and
another sealing zone, which in comparison is inwardly
offset and in the exemplary embodiment interacts with a
closure pin 7 that forms a closure means V. The
aforementioned sealing zones are arranged concentric to one
another in a direction extending perpendicular to the
chamber 6 - referred to a moving direction R of the opening
means during an opening process.
[0058] Figure 2
shows an upper portion of a container 2,
in this case a beverage bottle, on the container opening 3
of which a closure device 1 according to a first embodiment
is arranged. The closure device 1 is in a position relative
to the container 2, in which it closes the container
opening 3 in a fluid-tight manner. The closure device 1 is
conventionally screwed on the container 2 such that the
container opening 3 is closed. In this state, the container
2 can be stored for a prolonged period of time, during
which the contents are prevented from escaping from the
container 2. In order to open the container 2, the closure
device 1 is conventionally unscrewed from the container 2
such that the container opening 3 ultimately is completely
exposed.
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[0059] The
closure device 1 comprises a lid element 4, a
chamber 6 arranged on the lid element 4 and an inner
housing 5. In the - non-restrictive - embodiment shown, the
lid element 4 is a plastic lid, for example of
polypropylene (PP) or polyethylene (PE).
[0060] Figures 1
to 5 show an embodiment of the closure
device 1, in which the chamber 6 is manufactured in the
form of separate
part, e.g. in a plastic injection blow
molding process. However, the chamber can also be
manufactured by using a plastic injection blow-stretch
molding process, in which the heated preform is in addition
to the normal injection blow molding process (extrusion
blow molding process) stretched in the longitudinal
direction, for example by using a stretching rod extending
through the preform opening, prior to or simultaneously
with the blow molding process in order to manufacture
hollow bodies of a thermoplastic material. For example, an
attainable inflation rate (smallest opening diameter: to
largest outside diameter) may be as high as 1:10 in this
case.
[0061] The
thusly manufactured chamber 6 is subsequently
snapped to the lid element 4 and accordingly snap-locked
thereon.
[0062] To this
end, a' circumferential collar 19 may be
provided on the outer side of the wall of the chamber 6 as
shown, wherein said collar serves for interacting with a
corresponding snap-lock projection 20 of the lid element 4
in an interlocking manner.
[0063] For
example, flattened regions 21 may be provided
over the circumference of the chamber wall and in the
corresponding regions of the lid element wall in order to
transmit the screw torque during a screw-type actuation of
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the lid element 4. The chamber 6 is held on the lid element
4 in a rotationally rigid manner. Figure 2 shows an
exemplary longitudinal section through the flattened
regions of the closure device 1. In contrast to the other
longitudinal sections in Figures 1 and 4, this longitudinal
section in Figure 2 is illustrated offset by approximately
90 about the longitudinal axis.
[0064] The
chamber 6 therefore has a one-piece design
with respect to the circumferential chamber wall and the
chamber ceiling, as well as the discharge nozzle 13 that is
located directly adjacent to the chamber wall in the
longitudinal direction and has an opening on the container
side.
[0065] In this
embodiment, the closure means V or the
closure pin 7 is respectively snap-locked on the chamber 6,
particularly on the discharge nozzle 13. This is realized
with the aid of a snap-lock part 22. In a longitudinal
section, the latter essentially is realized in a U-shaped
manner with a circumferential snap-lock collar 23 that
encompasses the free end region of the discharge nozzle 13.
In the interlocking position, this snap-lock collar engages
behind a correspondingly adapted radial step of the
discharge nozzle 13 along the opening edge.
[0066] The snap-lock part 22 forms an inner
circumferential wall, the inner side of which is supported
on the discharge nozzle 13. The closure pin 7 is integrally
formed on this wall, for example by means of a cross web
arrangement.
[0067] The inner
housing 5 has a pot-like design with a
circumferential pot wall and a collar for being supported
on the container edge surrounding the container opening 3.
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[0068] A
circumferential sealing lip 24 is integrally
formed on the underside of the inner housing collar. In the
assigned position, this sealing lip interacts with the
container wall surrounding the container opening 3.
[0069] In this
case, the inner housing 5 also forms a
channel dome 14 on the side of the pot bottom. This channel
dome centrally carries a pin-shaped structure with the flow
channel 11. This pin-shaped structure with the flow channel
11 may be connected to the channel dome 14 by means of a
cross web-like connection that, however, is not illustrated
in greater detail.
[0070] In the
exemplary embodiment shown, particularly
the above-described connecting region is spray-coated with
the material of the sealing element 10 such that the
sealing element 10 essentially extends facing the chamber
6, but also at least partially underneath the dome ceiling.
[0071] According to
Figure 1, for example, the sealing
element 10 may on the side facing the chamber 6 have a
cross section that is tapered in a funnel-shaped manner
from radially outside toward the center.
[0072] The outside
diameter of the sealing element 10
corresponds to that of the channel dome 14 and is
furthermore adapted to the clear inside diameter of the
snap-lock part 22 carrying the closure pin 7 such that a
sealing effect between the sealing element 10 and the inner
wall of the chamber 6 or the snap-lock part 22 is
respectively achieved in the operative position.
[0073]
Furthermore, the snap-lock part 22 may also be
held on the chamber 6 by means of a welded connection.
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[0074] In this
case, the inner housing 5 is also
connected to the chamber wall by means of a thread 15.
[0075] In the
closed position according to Figure 2, the
closure pin 7 penetrates into the closure opening or
discharge opening 8 in order to tightly close the chamber
6.
[0076] An axial
displacement of the closure pin 7
relative to the inner housing 5 is achieved due to the lid
element 4 and thereby the chamber 6, wherein the closure
pin 7 releases the closure opening 8 in order to discharge
the stored medium from the chamber 6 into the container
interior.
[0077] The inner housing 5 (initially) is secured
against rotating by means of a frictional connection
between the sealing lip 24 and the container wall.
[0078] Figures 6 to 9
show another embodiment. In this
case, the chamber 6, particularly the circumferential
chamber wall and the chamber ceiling, preferably is
realized in the form of an insert part that is spray-coated
in order to form the lid element 4. The section of the
chamber 6, which essentially forms the discharge nozzle 13
and in this embodiment integrally forms the closure pin 7,
preferably can be manufactured separately and ultimately
connected to the insert part, preferably by means of a
welded connection, in order to form the chamber 6.
[0079] The
discharge nozzle 13 has a section that is
tapered in a funnel-shaped manner and transforms into a
cylinder section 25 that carries the closure pin 7 on its
end. In this case, the closure pin 7 preferably is also
held on the cylinder section 25 by means of a cross web
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arrangement, wherein the closure pin 7 protrudes over the
free end of the cylinder section 25 in the axial direction.
[0080] The
sealing element 10 on the side of the inner
housing has a pot-shaped design with a circumferential
sealing wall, the outer side of which abuts on the cylinder
section of the discharge nozzle 13.
[0081] The
closure opening 8 is formed in the sealing
pot bottom. The flow channel 11 essentially is formed by
the sealing element 10.
[0082] On the
outer side of its wall and on the
underside of the sealing pot bottom, the pot-shaped sealing
element 10 is circumferentially covered by a section of the
inner housing 5 that has a corresponding pot-like design.
[0083] In the
closed position according to Figures 6 and
7, a seal essentially is produced in two concentric
regions. One seal is produced in the region between the
cylindrical wall of the discharge nozzle 13 and the
circumferential sealing pot wall and another seal is
produced in the region of the flow channel 11, in which the
relevant circumferential wall of the sealing element 10
abuts on the corresponding outer wall of the closure pin 7.
[0084] The
closure pin 7 has a (second) output recess
26. This output recess is formed by a longitudinally
directed groove that opens toward the circumferential wall
surface of the closure pin 7, as well as toward the free
end thereof.
[0085] In the
embodiment shown, the closure pin 7 is
completely seated in the flow channel 11 in the closed
position. In this case, the output recess 26 extends over
an axial length that is shorter than the axial length of
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the sealing region between the closure pin 7 and the
sealing element 10. For example, the output recess 26
extends over half the axial length of the closure pin 7.
[0086] The figures
only show one output recess 26 in the
form of a groove. However, an arrangement of multiple
grooves or the like, which are distributed over the
circumference, would likewise be conceivable. Furthermore,
a circumferential radial constriction may be used for
realizing the output recess 26.
[0087] Due to
the axial displacement of the chamber 6
relative to the inner housing 5, the closure pin 7 is in
this case also raised into a position according to Figure
9, in which the cross-sectionally unaffected region of the
closure pin 7, which interacts with the sealing element 10
in a sealing manner, exits the flow channel 11 and the
output recess 26 is moved into a position, in which it
releases a flow channel between the chamber interior and
the flow channel 11. The output recess 26 is raised beyond
the plane of the output opening.
[0088] According
to Figure 9, it suffices if the closure
pin 7 is not completely lifted off the sealing element 10
in this case although such a solution is also possible as
illustrated in Figure 10.
[0089] If the
closure pin 7 is axially extended downward
beyond the inner housing 5, this output recess 26 may
furthermore form a lowermost region of the discharge path
in the discharge state according to Figure 9 (see the
illustration drawn with dot-dash lines in Figure 9).
[0090] In this
embodiment, the closure pin 7 and the
inner housing 5 or the sealing element 10 respectively
interact in the form of a slide valve.
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[0091] Figures
11 to 14 show an embodiment, in which the
closure pin 7 and the sealing element 10 interact in the
form of a rotary slide valve.
[0092] Based on
the fundamental arrangement and design
of the closure device 1 in accordance. with the above-
described exemplary embodiment, the inner housing 5 is in
this case not connected to the chamber 6 by means of a
thread, but rather by means of a snap-lock connection that
preferably allows a rotation of the chamber 6 relative to
the inner housing 5 over a predefined angular range.
[0093] In this embodiment, the closure pin 7 is
permanently seated in the sealing element 10 and
accordingly is not axially displaced relative thereto.
[0094] In this
case, only a displacement of the closure
pin 7 relative to the sealing element 10 in the
circumferential direction takes place, wherein said
displacement preferably is limited to an angle of
approximately 180 by means of stops.
[0095] Analogous to the above-described exemplary
embodiment, the closure pin 7 in this case also has a
(second) output recess 26 in the form of a groove that
extends in the axial direction on the side of the wall.
With respect to a cross section perpendicular to the axial
direction, this groove is in the closed position according
to Figures 11 and 12 aligned such that it is offset by
approximately 180 relative to a first output recess 27 on
the side of the inner housing. This first output recess 27
preferably is also realized in the form of a groove,
particular in the form of a groove that extends in the
axial direction and is arranged on the side of the wall of
the flow channel 11 formed by the sealing element 10. The
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output recess 27 approximately extends over half the
longitudinal extent of the flow channel 11 starting from
the closure opening 8 or the opening plane that is directed
toward the chamber 6, respectively.
[0096] This
accordingly results in a partial radial
widening of the channel cross section over its
circumference in this region.
[0097] A rotational
displacement causes the closure pin
7 seated in the sealing element 10 to be turned into the
discharge position, in which the output recesses 26 and 27
are moved into a corresponding alignment as illustrated in
Figure 14. The groove-like output recesses therefore
overlap in the axial direction such that they form the flow
path for discharging the medium located in the chamber 6.
[0098] In this
embodiment, the inner housing 5 likewise
is already axially raised relative to the container opening
3 over the first rotational path of approximately 1800 in
order to reach the discharge position. The sealing lip 24
has an adequate axial length for generating a sufficiently
high holding torque in order to prevent the inner housing 5
from rotating despite this axial displacement in the course
of the rotational displacement from the closed position
into the discharge position.
[0099] A
circumferential sealing lip 29 is integrally
formed on the inner housing 5 or directly formed by the
sealing element 20 in the region of the discharge opening
28. This sealing lip acts against the circumferential
surface of the assigned region of the closure pin 7, namely
in the closed position, as well as in the open position. In
this way, the flow channel 11 is sealed in the discharge
position of the closure device 1, which also corresponds to
the removed position of the lid. A lid that was removed
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after the discharge of the medium from the chamber 6 into
the container 2 and placed on a work surface therefore
cannot lose any residual amount of medium that may still be
present in the chamber 6. Soiling of the work surface and
the environment is thereby counteracted.
[00100] Since the
pressure in the chamber 6 is no longer
higher than the ambient pressure after the discharge of the
medium in the discharge position, such a lip-shaped seal
suffices for preventing potential residual amounts from
dripping out.
[00101] The closure device 1 can be conventionally
filled: filling - preassembly - pressurization - assembly.
[00102] Furthermore, the inner housing 5 may also be
snap-locked on the chamber 6 in the open valve position
after the chamber 6 has been filled, wherein the chamber 6
is subsequently pressurized and closed due to a relative
rotation between the inner housing 5 and the chamber 6. It
is also possible to snap on the inner housing 5 in the
closed valve position after the chamber 6 has been filled.
[00103] The
sealing element 10 is constructed in such a
way that it essentially abuts on the closure pin 7
permanently with a prestress in the region of the discharge
opening. On the one hand, this prevents anything from
depositing in the first output recess 27 between the
sealing element 10 and the closure pin 7. On the other
hand, the sealing lip 29 can provide an effective drip
protection.
[00104] In the
embodiment shown, the sealing lip 29 has a
fluting 30 on the outer side in order to additionally
increase the flexibility such that the least resistance
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possible is generated during the pressurized discharge of
the chamber contents.
[00105] Figures
15 to 19 show another embodiment that
essentially is based on the exemplary embodiment according
to Figures 11 to 14.
[00106] In this
case, the chamber 6, the discharge nozzle
13 and the closure pin 7 are also connected to one another
in a rotationally rigid manner and rotatable relative to
the inner housing 5 as a whole, but rigidly connected to
this inner housing in the axial direction.
[00107] As in the
above-described exemplary embodiment, a
preferably outer circumferential bead 9 on the discharge
nozzle 13 may in this case also engage into an assigned
annular groove 12 of the inner housing 5. This allows the
rotational displacement, in particular, of the closure pin
7 relative to the inner housing 5. However, a relative
displacement in the axial direction is prevented.
[00108] In the
previous embodiment, a rotation of the lid
element 4 from the closed position in the direction of a
lid removal position (initially) causes a rotation of the
chamber 6 with the closure pin 7 relative to the inner
housing 5 and a superimposed axial displacement of the
inner housing 5 and the chamber 6 with the closure pin 7 in
the lid removal direction, but only a rotation of the
closure pin 7 relative to the inner housing 5 via the
chamber 6 without the aforementioned axial displacement can
initially be realized in the embodiment according to
Figures 15 to 19 at the beginning of the rotation of the
lid element 4 out of the closed position according to
Figure 15.
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[00109] An axial
displacement of the chamber 6 with the
closure pin 7 and the inner housing 5 in the removal
direction preferably is prevented until a discharge
position illustrated in Figures 18 and 19 is reached.
[00110] This is
essentially achieved with a freewheel of
the lid element 4 relative to the chamber 6 referred to the
axial direction.
[00111] To this end,
a stopping rib 15, which in the
longitudinal section according to Figure 15 points radially
outward in the direction of the inner wall surface of the
lid element 4, may be provided on the outer side of the
wall of the chamber 6. In the closed position of the lid
according to Figure 15, a driving rib 16, which in the
exemplary embodiment shown essentially protrudes radially
inward, is provided on the inner side of the wall of the
lid element 4 at an axial distance underneath this stopping
rib 15.
[00112] The axial
distance between the driving rib 16 and
the stopping rib 15 in the optionally sealed closed
position of the lid according to Figure 15 preferably can
be adapted to the axial displacement path of the lid
element 4 during a rotation thereof by about 180 degrees.
The axial distance therefore may lie between 1 mm and 2.5
mm, for example between 1.6 mm and 1.8 mm.
[00113] The
chamber 6 is held in the lid element 4 in a
rotationally rigid manner, but can be linearly displaced in
the lid element 4 in the axial direction by the above-
described dimension. To this end, axially extending ribs 31
are provided on the outer side of the wall of the chamber 6
and engaged with correspondingly adapted ribs 32 on the
inner side of the wall of the lid element 4, which likewise
extend in the axial direction (see Figure 16).
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[00114] In this way, the chamber 6 and the elements
connected to the chamber 6 can be vertically displaced
relative to the lid element 4 and the chamber 6 is at the
same time rotationally driven by the lid element 4.
[00115] Due to
the rotational displacement of the lid
element 4 out of the closed position according to Figure 15
and the correspondingly driven rotation of the chamber 6,
the closure pin 7 seated in the sealing element is in this
embodiment also turned into the discharge position, in
which the output recesses 26 and 27 are moved into a
corresponding alignment as illustrated in Figures 18 and
19. In this case, the groove-like output recesses also
overlap in the axial direction and thereby form the flow
path for discharging the medium.
[00116] No axial
displacement of the chamber 6 and of the
inner housing 5 takes place in the course of this initial
rotational displacement over an exemplary angle of
approximately 180 degrees. This axial displacement,
particularly for removing the inner housing 5 from the
container opening 3, preferably only begins once the
discharge position according to Figures 18 and 19 is
reached by continuing the rotational displacement of the
lid element 4 and thereby causing the rib 32 on the side of
the lid to act upon the rib 31 on the side of the chamber.
[00117] Figures 20 to 23 show another embodiment, in
which a chamber bottom 33 is formed by the inner housing 5
in the assigned state as it is essentially also the case in
the above-described embodiments. With respect to the cross
section illustrated in Figure 20, this chamber bottom
extends at an acute angle to the plane aligned with the
body axis of the closure device 1.
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[00118] The
chamber bottom 33 transforms into a channel
34 over its entire circumference. With respect to the
section illustrated in Figure 20, this channel is defined
by an inner channel sidewall 35 and a radially outer
channel sidewall 36, as well as by a channel bottom 37.
[00119] The
radially inner sidewall 35 transforms into
the chamber bottom 33 whereas the radially outer channel
sidewall 36 essentially forms the housing wall of the inner
housing 5.
[00120] A soft
plastic layer 38 particularly covers the
surface of the channel bottom 37, but preferably also the
surface of the radially inner channel sidewall 35 pointing
into the channel space and optionally also the surface of
the chamber bottom 33 facing the chamber 6 as shown. This
soft plastic layer preferably can be manufactured together
with the inner housing 5 in a two-component injection
molding process. The soft plastic layer 38 may
alternatively be manufactured separately in the form of a
pot-like part and, for example, snap-locked on the inner
side of the inner housing 5.
[00121] At least
one discharge or closure opening 8 is
formed in the region of the channel bottom 37, wherein the
opening axis of said discharge or closure opening
preferably is directed identically to the body axis of the
closure device 1, i.e. essentially aligned along a vertical
line in a standing state of the container 2.
[00122] The
discharge opening 8 is realized in the form
of a bore and extends through the hard plastic material in
the region of the chamber bottom 33, as well as through the
soft material in the region of the soft plastic layer 38.
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[00123] Analogous
to the description of the embodiments
illustrated in Figures 11 to 19, the closure means and the
sealing element in the embodiments according to Figures 20
to 23 also interact in the form of a rotary slide valve.
[00124] The
sealing element 10 is formed by the soft
plastic layer 38. The closure means V is in this embodiment
essentially realized in a plug-like manner and particularly
formed by the wall of the discharge nozzle 13.
[00125] The
discharge nozzle 13 essentially extends in
the form of a circular cylinder, wherein the free annular
end, which usually points downward in the operative state,
penetrates into the channel 34 of the inner housing 5.
[00126] The closure means V, which in this case
corresponds to the annular end region of the discharge
nozzle 13, is permanently seated in the sealing element 10,
in this case the channel 34, and accordingly not displaced
relative to the sealing element in the direction of the
axis. The closure means V preferably is only displaced
relative to the sealing element 10, particularly the soft
plastic layer 38, in the circumferential direction, wherein
the displacement of the closure means takes place over an
angle, for example, of 180 and is limited by stops.
[00127] In this
case, the closure means V has a (second)
output recess 26 in the form of a groove, the edges of
which are open radially inward in the direction of the
radially inner channel sidewall 35 and axially downward in
the direction of the discharge opening 8. In the closed
position according to Figures 20 and 21, this groove is
aligned such that it is offset by approximately 180
relative to a first output recesses 27, which is formed in
the region of the channel sidewall 35 in the direction of
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the channel 34. Accordingly, this groove is formed in the
region of the soft plastic layer 38.
[00128] This
first output recess 27 preferably is also
realized in the form of a groove, particularly in the form
of a groove extending in the axial direction. According to
the exemplary embodiment shown, this first output recess 27
is provided in the transition from the channel sidewall 35
into the chamber bottom 33 and axially spaced apart from
the discharge opening 8.
[00129]
Accordingly, the channel 34 is radially widened
in the region of the first output recess 27.
[00130] A rotational
displacement causes the plug-shaped
closure means V seated in the channel 34 to be turned into
the discharge position, in which the output recesses 26 and
27 are moved into a corresponding alignment as illustrated
in Figure 23. This means that the groove-like output
recesses overlap in the axial direction and the second
output recess 26 is assigned to the discharge opening 8
such that the output recesses form the flow path for
discharging the medium located in the chamber 6.
[00131] The first
output recess 27 opens in the axial
direction toward the chamber 6.
[00132] The
preceding explanations serve for elucidating
all inventions that are included in this application and
respectively enhance the prior art independently with at
least the following combinations of characteristic
features, namely:
[00133] A closure
device 1, which is characterized in
that the closure means is a closure pin 7, which is rigidly
connected to the chamber 6 and has a vertical extent with
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respect to the rotational axis, and in that the closure
means is over the vertical extent realized with different
regions, namely a flow-through region and a closure region.
[00134] A closure device 1, which is characterized in
that the closure means is a closure pin 7, and in that the
closure pin 7 is connected to the chamber by means of a
snap-lock part 22.
[00135] A closure device 1, which is characterized in
that the opening means has an output recess 26, 27 that is
designed dependent on the rotating direction.
[00136] A closure
device 1, which is characterized in
that the inner housing 5 has a (first) output recess, which
is during an unscrewing process correspondingly aligned
with a (second) output recess formed on the chamber 6 due
to a mere relative rotation between the chamber 6 and the
inner housing 5.
[00137] A closure
device 1, which is characterized in
that the (second) output recess (26) is formed on a closure
pin 7.
[00138] A closure device 1, which is characterized in
that the closure pin 7 is connected to the chamber 6 by
means of a snap-lock part 22.
[00139] A closure
device 1, which is characterized in
that the motion takes place without an axial relative
motion between the chamber 6 and the inner housing 5.
[00140] A closure device 1, which is characterized in
that the lid element 4 is, relative to the chamber 6 in a
removal direction of the lid element 4, movable relative to
the container 2 to a limited degree in a first motion
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segment of the lid element 4 in the course of a removal of
the lid element 4 from the container 2 and motion-coupled
to the container 2 in a second motion segment.
[00141] A closure
device 1, which is characterized in
that the motion between the chamber 6 and the inner housing
5 allows a discharge of medium by merely moving the closure
means and the opening means relative to one another in a
horizontal plane.
[00142] A closure device 1, which is characterized in
that the lid element 4 can be rotationally moved relative
to the chamber 6 in the first motion segment.
[00143] A closure device 1, which is characterized in
that the chamber 6 has a closure part in the form of a
closure pin 7, and in that the opening means interact with
the closure part.
[00144] A closure device 1, which is characterized in
that the closure pin 7 is realized integrally with the
chamber 6.
[00145] A closure
device 1, which is characterized in
that the closure pin 7 has a freely projecting closure end
9 that can be inserted into the closure opening 8.
[00146] A closure
device 1, which is characterized in
that the closure end 9 has a diameter that essentially
corresponds to the inside diameter of the closure opening
8.
[00147] A closure device 1, which is characterized in
that a sealing element 10 is assigned to the closure
opening 8 and/or the closure pin 7 in order to close the
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closure opening 8 with the closure pin 7 in a fluid-tight
manner.
[00148] A closure device 1, which is characterized in
that a sealing element 10 is assigned to the inner wall of
the closure opening 8, and in that the inner wall is coated
with the sealing material in order to form the sealing
element 10.
[00149] A closure device 1,
which is characterized in
that the closure opening 8 is part of a flow channel 11,
the length of which corresponds to at least five times its
diameter and to no more than twenty times its diameter.
[00150] A closure device 1,
which is characterized in
that the chamber 6 is arranged concentrically in the inner
housing 5, wherein the chamber 6 can be axially displaced
within the inner housing 5 due to an opening process of the
closure device 1 on the container 2.
[00151] A closure device 1, which is characterized in
that the chamber 6 has an opening on the container side,
and in that a snap-lock part 22 with U-shaped cross section
encompasses an opening edge of the opening.
[00152] A closure device 1,
which is characterized in
that the (first) output recess 27 of the chamber 6 also
forms a lowermost region of the discharge path in an open
state of the closure.
[00153] A closure device 1, which is characterized in
that the discharge opening on the inner housing 5 forms a
sealing lip 29 that abuts on the closure means of the
chamber 6.
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[00154] A closure device 1, which is characterized in
that the chamber 6 has a chamber bottom 33, and in that the
chamber bottom 33 transforms into a channel 34 that has a
discharge opening 8.
[00155] A closure device 1, which is characterized in
that the channel 34 is closed in an annular manner.
[00156] A closure
device 1, which is characterized in
that the discharge opening 8 is formed in a channel bottom
37 and/or in a channel sidewall 36.
[00157] A closure
device 1, which is characterized in
that multiple discharge openings 8 are formed over the
circumference of the channel 34.
[00158] A closure
device 1, which is characterized in
that the chamber bottom 33 comprises a soft plastic layer
38.
[00159] A closure
device 1, which is characterized in
that the discharge opening 8 is only formed in the soft
plastic layer 38.
[00160] All disclosed characteristic features are
essential to the invention (individually, but also in
combination with one another). The disclosure content of
the associated/attached priority documents (copy of the
priority application) is hereby fully incorporated into the
disclosure of this application, namely also for the purpose
of integrating characteristic features of these documents
into claims of the present application. The characteristic
features of the dependent claims characterize independent
inventive enhancements of the prior art, particularly for
submitting divisional applications on the basis of these
claims.
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List of Reference Symbols
1 Closure device
2 Container
3 Container opening
4 Lid element
5 Inner housing
6 Chamber
7 Closure pin
8 Closure opening
9 Bead
10 Sealing element
11 Flow channel
12 Annular groove
13 Discharge nozzle
14 Channel dome
15 Stopping rib
16 Driving rib
17 Thread
18 Thread
19 Collar
20 Snap-lock projection
21 Flattened region
22 Snap-lock part
23 Snap-lock collar
24 Sealing lip
25 Cylinder section
26 Output recess
27 Output recess
28 Discharge opening
29 Sealing lip
30 Fluting
31 Rib
32 Rib
33 Chamber bottom
34 Channel
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35 Channel sidewall
36 Channel sidewall
37 Channel bottom
38 Soft plastic layer
V Closure means
