Container With a Connection Piece Which Has a Membrane

Description

FIELD OF THE INVENTION

The invention relates to a container for a dispensing system that can be positioned in the interior of a dishwasher and which comprises a dispensing device by which at least one preparation can be dispensed into the interior.

BACKGROUND OF THE INVENTION

EP 2 296 520 B1 discloses such a dispensing system having a container and a dispensing device. A housing of the container forms several chambers, each of which stores a preparation. Each chamber is paired with a connection piece with which the container is connectable to the dispensing device to form a liquid-tight connection. The dispensing device has several connection receptacles for this purpose. The connection piece of the chamber is connectable to one of these connection receptacles. The dispensing device and the container connected thereto are then placed in the interior and a wash cycle can begin. The dispensing device exchanges signals with the dishwasher so that the preparations in the chambers can be dispensed in a targeted manner at different times and in different quantities during the washing cycle, depending on various parameters.

The dispensing device and container are detachably connected to one another so that the container can be replaced when it is empty after several rinse cycles. EP 2 296 520 B1 relates to a plug-in connection between a connection piece and a connection receptacle, where the connection piece must be pressed into the connection receptacle with a certain pressure force in order to establish the plug-in connection. In particular, a membrane of the connection piece must be pierced which, when the connection piece is new, protects the preparation in the chamber from environmental influences. The membrane is enclosed in a main part of the connection piece and is made of a soft material that is different from the material of the main part. When the connection piece is connected to the connection receptacle, the membrane is pierced by a mandrel or a hollow needle of the connection receptacle, wherein the force required to pierce the membrane is not great due to the soft material.

To produce the connection piece, a pre-manufactured membrane can be inserted into the main part of the connection piece. The subsequent installation of the membrane is costly. It is also possible to injection-mold the membrane onto the main part in a multi-component injection molding process, but this requires a complex multi-component injection molding machine. Recycling the connection piece can also be problematic if the material of the main part and the material of the membrane have to be separated from one another during recycling.

The invention is therefore based on the object of providing a container for a dispensing system that can be placed in a dishwasher, which can be produced in a cost-effective and resource-saving manner and the replacement of which can be carried out easily.

The object of the invention is achieved by the combination of features according to claim 1. Embodiments of the invention can be found in the dependent claims of claim 1.

According to the invention, it is provided for the membrane to be formed integrally on the main part of the connection piece, wherein the main part and the membrane are made of the same material. This allows the connection piece to be manufactured as a one-piece injection-molded part made of plastic, wherein subsequent insertion of the membrane or subsequent injection molding of the membrane is not necessary. By using only one material, the connection piece or the entire container can be recycled with less effort.

It must be ensured that piercing or tearing the membrane when connecting the connection piece and the connection receptacle does not require excessive forces. The membrane can therefore be very thin, for example between 0.01 to 0.5 mm or preferably between 0.04 to 0.2 mm. In one exemplary embodiment, the wall thickness of the membrane is 0.08 to 0.12 mm. Such a low wall thickness of the membrane can be achieved by subjecting the membrane to the force of a stamping tool after injection molding, which compresses the wall thickness to the required dimension. Another way to produce a membrane having such a low wall thickness is to provide a sprue opening in the injection mold very close to the membrane.

The membrane can be made of polyolefin, preferably of polypropylene. To ensure that the membrane will reliably tear when the connection piece is connected to the connection receptacle without having to apply too much force, the plastic from which the membrane and the main part are made can be provided with a filler. The brittleness of the plastic can be adjusted by choosing the filler and its content. Talc, silica, glass powder or glass beads, glass fibers, barium sulfate and kaolin can be used as fillers. A preferred filler is calcium carbonate (CaCO₃). In one exemplary embodiment in which polyolefin and preferably polypropylene (PP) is used as the plastic, the filler content is 1 to 10%, preferably 4 to 8%. The plastic for the main part and the membrane must also not be too brittle so that it does not break under impact (which occurs, for example, if the container is accidentally dropped). The filler can also be a combination of different substances, for example a combination of calcium carbonate and talc.

In one exemplary embodiment, the grain size of the filler is selected such that a grain diameter of the filler is not larger than the wall thickness of the membrane. In case of non-round grains, the grain diameter should correspond to the largest extension or diameter of the grain. Preferably, the grain diameter is smaller than half the wall thickness of the membrane.

In one exemplary embodiment, the main part has a weld-in part with an inflow channel, wherein the weld-in part is sealingly attached to a chamber wall of the chamber and the inflow channel is connected to the chamber. The main part can have a plug-in part with an outflow channel, wherein the plug-in part can be inserted into the connection receptacle. Insertion is preferably carried out by a linear movement. The plug-in part can be pulled out of the connection receptacle by an opposite linear movement.

The membrane can be arranged between the inflow channel and the outflow channel and can separate the inflow channel and the outflow channel from one another when the container is new. If the membrane is pierced or torn, there is a connection between the inflow channel and the outflow channel, so that the preparation can pass from the chamber to the connection receptacle of the dispensing device. Before the membrane is pierced or torn, i.e., before the connection piece is connected to the connection receptacle, the membrane ensures that the chamber is airtight and liquid-tight. This means that the preparation in the chamber is protected from environmental influences and can be stored in the container for a longer period of time. Only when the container is connected to the dispensing device does the membrane lose its sealing effect.

In one exemplary embodiment, the main part has an air chamber with an air chamber wall serving to ventilate the chamber, wherein a projection is formed on the air chamber wall. The projection has a support for an abutment of the connection receptacle. The support is spaced from the air chamber wall so that a force acting on the support of the projection when connecting the connection piece and the connection receptacle generates a bending moment. The bending moment causes the projection to rotate, tearing an opening into the air chamber wall. The tear or break in the air chamber wall is primarily due to tensile stresses in the air chamber wall caused by the bending moment or rotation of the projection. The ventilation function of the connection piece is activated by opening the air chamber wall.

The air chamber is connectable to an air channel that runs through the weld-in part. Preferably, the air channel is connected to an air pipe or air hose. An end of the air pipe facing away from the air channel ends in a region of the chamber remote from the connection piece. When the dispensing system is in use, the remote region can constitute the upper region of the chamber. When dispensing the preparation, air can flow into the upper part of the chamber. The air required for ventilation flows through the opening in the air chamber wall, through the air channel connected to the air chamber and through the air pipe into the chamber. A negative pressure in the chamber, which makes dispensing difficult, can thus be avoided.

In a container that is not yet connected to the dispensing device, the preparations in the chambers are completely separated from the environment due to the still intact membrane and the undamaged air chamber wall. Only when the connection piece and the connection receptacle are connected to one another is dispensing with a ventilation function possible via the air chamber and the torn membrane.

A finger ring can be attached to the main part, which can be moved from an initial position into an active position, wherein in the active position the finger ring is designed to be engaged from behind by a human finger in order to introduce a tensile force into the main part, by which the connection piece can be separated from the connection receptacle.

In one exemplary embodiment, the finger ring can be rotated about a pivot axis into the active position starting from the initial position. Preferably, a hinge in the form or type of a film hinge is provided between the finger ring and the main part, which is integrally formed on the finger ring and the main part.

The finger ring may be attached to the main part by two webs, wherein the two webs can define the pivot axis about which the finger ring can be pivoted from the initial position into the active position. A pivot angle between the initial position and the active position can be 80 to 100°, preferably approx. 90°.

Preferably, the finger ring together with the main part and the two webs forms a tab having a closed peripheral region. The closed peripheral region is stable and can absorb high tensile forces.

A pressure plate for receiving a human finger can be formed on the main part, the pressure force of which can act to connect the connection piece to the connection receptacle. In the initial position, the finger ring can surround the pressure plate and lie substantially in the same plane as the pressure plate. While the finger ring in the active position serves to pull the cover part out of the connection receptacle in order to release the connection between the connection piece and the connection receptacle, the pressure plate serves to press the plug-in part of the main part into the connection receptacle. In this exemplary embodiment, the force required to establish the connection between the connection piece and the connection receptacle can therefore also be guided directly to the connection piece.

In one exemplary embodiment, the pressure plate is arranged coaxially to the membrane. This means that the pressure force required to penetrate the membrane can be applied directly above the membrane without any lateral offset. The membrane can lie in a plane that extends parallel to the plane of the pressure plate.

The pressure plate can be slightly curved inwards (concave). The inward curvature prevents the finger from slipping when pressure is applied. In one exemplary embodiment, the diameter of the pressure plate is 10 to 20 mm. In the exemplary embodiment with the finger ring enclosing the pressure plate, the effective contact surface for the finger is increased, since part of the pressure force can now also be applied to the finger ring.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained in more detail with reference to the exemplary embodiments shown in the drawings, in which:

FIG. 1 shows a dispensing system;

FIG. 2 shows a schematic cross-section of the dispensing system;

FIG. 3 schematically shows a container according to the invention for the dispensing system;

FIG. 4 shows various views of a connection piece of the container according to the invention (FIG. 4A to 4B);

FIG. 5 shows further views of the connection piece of FIG. 4 (FIG. 5A to 5D);

FIG. 6 shows two sectional views of the connection piece of FIGS. 4 and 5 (FIGS. 6A and 6B); and

FIG. 7 shows the connection piece in another sectional view with parts of the dispensing device.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a dispensing system 1 comprising a dispensing device 10 and a container. The container is accommodated within a flat housing 11 of the dispensing device 10 and cannot be seen in FIG. 1. FIGS. 2 and 3 schematically show the dispensing system 1 with the dispensing device 10 and with the container designated 40.

The dispensing system 1 can be placed in the interior of a dishwasher and is designed to dispense one or more preparations, which are located in the container 40, during a wash cycle. The dispensing system 1 can exchange signals, data, control commands, etc. with the dishwasher so that the preparations can be dispensed precisely in terms of time and quantity.

As can be seen in FIGS. 1 and 2, the housing 11 of the dispensing device 10 has a front wall 12 and a rear wall 13. The front wall 12, which is basically rectangular, and the rear wall 13, which is also basically rectangular, extend from a base 14 to an upper housing edge 15. Near the upper housing edge 15, a film hinge 16 is provided between the front wall 12 and the rear wall 13 so that the housing 11 can be opened and a container compartment 17 (see FIG. 2) of the dispensing device 10 is opened. The container compartment 17 serves to accommodate the container 40. When the housing 11 is in the opened state, the container 40 can be removed from the container compartment 17 in order to replace it with another container. The container 40 can be designed to hold the preparation or preparations in an amount sufficient for several rinse cycles (for example, for 20 to 30 rinse cycles). After having been emptied, the container 40 can be replaced with a filled container.

FIG. 1 further shows that a first recess 18 and a second recess 19 are provided on the rear wall 13. In the following, only the first recess 18 will be discussed in more detail. Since the second recess 19 is identical to the first recess 18 in terms of its design, the statements regarding the first recess 18 also apply mutatis mutandis to the second recess 19.

The first recess 18 starts at the base 14 and extends towards the upper housing edge 15. The recess 18 is designed as an elongated, channel-like or groove-like recess, wherein a length in the longitudinal direction of the recess (direction from the base 14 to the upper housing edge 15) is significantly greater than a width of the recess transverse to the longitudinal direction. The first recess 19 has a groove base 20, the distance of which from the area in which the rear wall 13 lies defines a depth of the first recess 18. The depth becomes smaller starting from a lower, open end 21, which is located at the base 14, to an upper, closed end 22. Accordingly, the depth at the lower end 21 is greater than the depth in the region of the upper end 22. Starting from the lower end 21, the groove base 20 initially runs in a straight line (i.e., the depth is initially constant there) and then merges into a curved portion with decreasing depth.

The two recesses 18, 19 each serve to accommodate a holding rod, which stands approximately vertically upwards or is slightly inclined to the vertical, of a plate holder of a dishwasher drawer that can be pulled out of the interior for loading and removing dishes. The plate holder usually has two parallel rows of holding rods, which have a certain distance (rod spacing) within a row. The distance between the two recesses 18, 19 corresponds to the distance between the two rows, so that the dispensing device 10 with the container 40 located in the housing 11 can be placed in a plate compartment of the plate holder like a plate. The dispensing device 10 is supported like a plate on the support rods that form the plate compartment. Due to the special shape of the groove base 20 with the depth decreasing towards the upper end 22, the dispensing device 10 can be placed, on the one hand, in a plate holder where the rod spacing is small and the holding rods have a medium length. On the other hand, the dispensing device 10 can also be placed in a plate holder where the rod spacing and the length of the holding rods are large. In the latter case, the dispensing device is supported by the upper end of the holding rod in the upper region of the recess 18, i.e., where the depth of the recess is small. As a result, even with a large rod spacing, the dispensing device 10 stands upright in the plate holder and does not block adjacent plate compartments by being too inclined.

The height (distance between base 14 and upper edge 15) and the width of the front wall 12 and rear wall 13 correspond to the diameter of a larger dinner plate. The housing 11 can have a height of 200 to 280 mm, for example. The width of the housing 11 can be 200 to 280 mm. The height to width ratio can be 0.8 to 1.2.

As can also be seen in FIG. 1, the housing 11 has a thickness which is greatest in the region of the base 14 and then decreases slightly towards the upper edge 15. A maximum thickness of the housing, preferably in the region of the base 14, can be between 20 and 28 mm. In the schematic representation of FIG. 2, the housing 11 is shown in a simplified form with a constant thickness.

While FIG. 1 shows the dispensing system 1 standing on the base 14, FIG. 2 shows the dispensing system 2 in a lying position with the rear wall 13 facing downwards. In this lying position, the housing 11 can be opened by pivoting the front wall 12 about the pivot axis of the film hinge 16 (in the illustration in FIG. 2, the pivot axis extends perpendicular to the plane of the drawing). When the front wall 12 is open, the container 40 can be removed from the container compartment 17. It will be explained in more detail below how this removal of the container 40 takes place and how a new container can be reconnected to the dispensing device.

FIG. 3 shows that the container 40, which is shown only schematically, has several chambers. In the exemplary embodiment shown, there are three chambers 41, 42, 43. Each chamber serves to hold a preparation, which can be, for example, an alkaline cleaning preparation, an enzymatic cleaning preparation, a rinse aid or a fragrance. Each chamber is paired with a connection piece 44, which does not differ in terms of its structure from the other connection pieces 44. The chambers 41, 42, 43 are approximately the same size here, but they can also differ significantly from one another in terms of their volume and shape. For example, one of the chambers for a preparation that is dispensed in twice the amount in one wash cycle compared to the other preparations can be designed to be twice as large, so that if the container needs to be replaced, all chambers are emptied as completely as possible or at least only very small residual amounts are left.

The chambers 41, 42, 43 are delimited by two housing halves or chamber walls 45, 46. Each housing half 45, 46 forms three shells or trays, which form a chamber with the opposite shell. To manufacture the housing halves 45, 46, a (folded) plastic film can be used, which is drawn or blown into corresponding thermoforming molds. The housing halves 45, 46 are welded together at a circumferential edge 47 and also at intermediate webs 48 between the individual chambers 41, 42, 42. In a portion 47a of the edge 47, the connection pieces 44 are arranged between the two housing halves 45, 46. They are inserted between the housing halves 45, 46 before welding the portion 47a and are then welded to the housing halves 45, 46 in a liquid-tight manner. Sealing/welding of the portion 47a with the connection pieces 44 is expediently carried out only after the chambers 41, 42, 43 have been filled with the respective preparations. However, during filling, the housing halves 45, 46 are already welded together at the edge 47 (except for portion 47a) and at the intermediate webs 48. Thermoforming allows for thin walls. The amount of material required is very low. The housing halves 45, 46 can be made of polypropylene (PP), for example.

The dispensing device 10 has a connection receptacle 23 for each connection piece 44 (see FIG. 2, which shows one of the connection receptacles). When the container 40 is inserted in the housing 11 of the dispensing device 10, the connection piece 44 and the connection receptacle 23 form a liquid-tight connection so that the preparation can pass from the chamber into a dispensing chamber of the dispensing device 10 which is paired with the respective chamber. The dispensing chamber and a dispensing valve are not shown in FIG. 2. FIG. 2 only shows a dispensing compartment 24, which accommodates the dispensing chamber and the dispensing valve and is integrated in the rear wall 13. The dispensing compartment 24 has a dispensing opening 25 for each chamber/dispensing valve, through which the preparation from the respective chamber passes through the connection piece 44/connection receptacle 23 into the interior of the dishwasher. It should be noted that in the inserted position of the dispensing system 1, the base 14 points downwards so that the preparations in the chambers 41, 42, 43 can flow out of the respective dispensing opening 25 due to gravity when the dispensing valve is open.

FIG. 4 to 7 show different views of the connection piece 44 alone. FIG. 4 shows two perspective views (FIGS. 4A and 4C as well as a chamber-side view (FIG. 4B) and a side view (4D). FIG. 5A shows the connection piece 44 from below, FIG. 5C from above in plan view. FIG. 5B shows a front view. FIG. 5D shows another side view. FIG. 6A is a horizontal longitudinal section through the connection piece 44. FIG. 6B shows the connection piece 44 in a vertical longitudinal section, while FIG. 7 shows a cross-section which runs perpendicular to the two sections 6A, 6B. FIG. 7 moreover shows sketched parts of the dispensing device.

The connection piece 44 has a main part 49 with a weld-in part 50 and a plug-in part 51. The weld-in part 50 forms an inflow channel 52 through which the preparation passes from the chamber into the connection piece 44. The plug-in part 51 forms an outflow channel 53 through which the preparation flows from the connection piece 44 into the connection receptacle 23 (see FIGS. 6 and 7). A connecting channel 54 is provided between the inflow channel and the outflow channel which connects the inflow channel 52 and the outflow channel 53. In a new state of the connection piece 44, the inflow channel 52 and the outflow channel 53 or the connecting channel 54 are separated from one another by a membrane 55. In other words, when the container 40 is new, the preparation from the chamber 41, 42, 43 cannot reach the outflow channel 53. The membrane 55 therefore protects the preparation in the chamber from environmental influences and also prevents it from leaking out.

A longitudinal axis 56 of the inflow channel 52 is at a right angle to a longitudinal axis 57 of the outflow channel 51. The connecting channel 54 is aligned substantially with the inflow channel 52. The connecting channel 54 is limited towards the top by a round, slightly inwardly curved pressure plate 58. The pressure plate 58 serves to accommodate a human finger in order to build up a pressure or a compressive force to press the connection piece 44 with the plug-in part 51 into the connection receptacle 23 of the dispensing device 10. A central axis of the pressure plate 58 coincides with the longitudinal axis/central axis 57 of the plug-in part 51 or has only a very small offset in relation thereto. The resulting force of the finger force applied to the pressure plate 58 acts vertically directly above the plug-in part 51. In FIGS. 4D, 6B and 7, the resulting force is designated FD. Several smaller openings in the pressure plate 58 can be provided to save material and simplify the injection molding of the connection piece 44.

A finger ring 59 is attached to the main part 49. The finger ring 59 is attached to the main part 49 via two spaced webs 60 (see, for example, FIGS. 5C and 6A). Due to the webs 60, which each start at a circumferential end of the finger ring 59, the finger ring 59 has a closed circumference. The finger ring 59 extends in the circumferential direction over an angular range of approximately 270°. When viewed in the circumferential direction, in the middle between the two end-side webs 60, a fixing web 61 is moreover provided between the finger ring 59 and the pressure plate 58 in order to hold the finger ring 59 in the position shown.

The position shown is a so-called initial position of the finger ring 59. In this initial position, the finger ring 59 lies in the same plane as the pressure plate 58 and constitutes a certain radial extension of the pressure plate 58. From this initial position, the finger ring 59 can be pivoted into an active position. For this purpose, a handle tab 62 is provided in the immediate vicinity of the fixing web 61, by which the finger ring 59 can be lifted relative to the pressure plate 58, but in this case the fixing web 61 must be broken. Further lifting of the handle tab 62 leads to a pivoting movement of the finger ring 59 about a pivot axis 63 (see dash-dotted line in FIGS. 5C and 6A). The pivot axis 63 is defined by the position of the webs 61, which are deformed during the pivoting movement and form a kind of film hinge. Compared to the fixing web 61, the webs 60 are designed to be significantly stronger and can absorb tensile forces that are transmitted through the finger ring 59 and into the main part 49.

In FIG. 5D, the active position of the finger ring 59 is indicated by the dashed line 59′. In this position, a human finger can be hooked into the finger ring 59 or 59′. It is thus possible to apply a comparatively large tensile force to the main part 44 and in particular to the plug-in part 51. The resulting force of the hooked finger is designated Fz in FIG. 5D. The combination of FIGS. 4D and 5B shows that the resulting force FD for establishing the connection between the connection piece 44 and the connection receptacle 23 and the force FZ for breaking this connection are opposite. The connection can be established and broken by a linear movement which is directed perpendicular to the front wall 12 or rear wall 13.

With the finger ring 59 in the active position, the connection piece 44 can thus be pulled out of the connection piece 23. As a result, the container 40 can be separated from the dispensing device 10 in the position when inserted in the housing 11 (see FIG. 2). It is not necessary to introduce the required forces into the container 40 via the rather unstable housing halves 45, 46.

To remove the container 40, the three connection pieces 44 can first be lifted slightly one after the other out of the respective connection receptacles by way of the finger ring so that they rest on the connection receptacles with practically no resistance and without any insertion force. The container 40 can then be removed from the housing 11 either by one finger ring or by two finger rings simultaneously.

The weld-in piece 50 forms not only an inflow channel 52 for the preparation, but also an air channel 64 which opens into a closed air chamber 65 in the main part 44. The air chamber 65 is arranged next to the connecting channel 54 (see FIGS. 6A and 7). As can be seen in FIG. 6A, an air hose 66 can be inserted into the open end of the air channel 64. The length of the air hose 66 is dimensioned such that the free end of the air hose, i.e., the end which is not inserted into the air channel 64, is located at an end of the chamber that is opposite the connection piece 44. In FIG. 3, the air hose 66 is indicated by the dashed line only for chamber 42. In the inserted position of the dispensing system 1, i.e., when the base 14 of the dispensing device 10 faces downwards, the open end of the air hose 66 ends in the upper region of the chamber 42. Such an air hose is also provided for the connection pieces 44 of the other two chambers 41, 43, but this is not shown in FIG. 3.

The closed air chamber 65 is surrounded by an air chamber wall 67. An outward-facing projection 68 is formed on the air chamber wall 67. At a root of the projection 68, the air chamber wall 67 has a predetermined breaking point 69 with reduced wall thickness and a thin hinge point or connection point 70. When inserting the plug-in part 51 into the connection receptacle 23, the membrane 55 is first pierced by a hollow mandrel 26 of the connection receptacle 23 (see FIG. 7). When the plug-in part 51 is pressed further into the connection receptacle 23, an abutment 27 of the connection receptacle comes into contact with a support 71 of the projection 68. The support 71 is provided at a free end of the projection 68.

The support 71 has a distance 72 to the predetermined breaking point 69 and the connection point 70. Due to the force acting on the projection 68 by the fixed abutment 27 and due to the distance 72, a bending moment acts on the root of the projection 68, which leads to tensile stresses in the region of the predetermined breaking point 69. If the tensile stresses become too great, the air chamber wall 67 tears in the region of the predetermined breaking point 69. In so doing, the projection 68 rotates upwards in an anti-clockwise direction around the thin connection point 70 in the illustration in FIG. 7, without the projection 68 becoming completely detached from the main part 44. Due to the tear or break at the predetermined breaking point 69, an exchange of air between the environment and the air chamber 65 and thus an exchange of air between the environment and the chamber is now possible. Ventilation of the relevant chamber is activated.

The connection piece 44 and the connection outlet 23 are designed such that when the plug-in part 51 is inserted into the connection outlet 23, the membrane 55 is pierced before ventilation of the chamber is activated, i.e., before the air chamber wall 67 tears. The hollow mandrel 26 and the abutment 27 of the connection receptacle 23 as well as their relative height to one another are only indicated schematically in FIG. 7. According to FIG. 7, the beginning of the piercing of the membrane 55 is imminent, while there is still a gap between the abutment 27 and the support 71 of the projection 68. Only when the connection piece 44 is pressed further into the connection receptacle 23 does the projection 68 abut against the abutment 27.

LIST OF REFERENCE SIGNS

• • 1 Dispensing system
  • 10 Dispensing device
  • 11 Housing
  • 12 Front wall
  • 13 Rear wall
  • 14 Base
  • 15 Upper edge of the housing
  • 16 Film hinges
  • 17 Container compartment
  • 18 First recess
  • 19 Second recess
  • 20 Groove base
  • 21 Lower end
  • 22 Upper end
  • 23 Connection receptacle
  • 24 Dispensing compartment
  • 25 Dispensing opening
  • 26 Hollow mandrel
  • 27 Abutment
  • 40 Container
  • 41 Chamber
  • 42 Chamber
  • 43 Chamber
  • 44 Connection piece
  • 45 Housing half/chamber wall
  • 46 Housing half/chamber wall
  • 47 Edge (portion 47a)
  • 48 Intermediate web
  • 49 Main part
  • 50 Weld-in part
  • 51 Plug-in part
  • 52 Inflow channel
  • 53 Outflow channel
  • 54 Connecting channel
  • 55 Membrane
  • 56 Longitudinal axis
  • 57 Longitudinal axis
  • 58 Pressure plate
  • 59 Finger ring (59′ finger ring in active position)
  • 60 Web
  • 61 Fixing webs
  • 62 Handle tab
  • 63 Pivot axis
  • 64 Air channel
  • 65 Air chamber
  • 66 Air hose/air pipe
  • 67 Air chamber wall
  • 68 Projection
  • 69 Predetermined breaking point
  • 70 Connection point/hinge point
  • 71 Support
  • 72 Distance