System for extending movable part of furniture, comprising two devices for extending movable part of furniture

Abstract

FIELD: furniture industry.SUBSTANCE: invention relates to a system with two devices for extending a movable part of furniture. The system for extending the movable part of the furniture comprises two devices for extending the movable part of the furniture. The devices comprise a trigger element that is movable between a locking position and a releasing position. The trigger elements of the devices are connected to each other via a synchronizing shaft. The displacement of at least one of the trigger elements is transmitted to the rotation of the synchronizing shaft. The synchronizing shaft comprises a first and a second synchronizing element comprising a transmission element, and the trigger element comprises a mating transmission element. The first and second synchronizing elements are rigidly connected to each other by means of connecting the connecting section to the connecting portion. The synchronizing shaft also comprises a connecting portion comprising a mating profile section. One of the synchronizing elements at one end also comprises a profile section. The profile section of the connecting part and the mating profile section are configured for connection. The connecting section is provided on an adapter comprising a profile section.EFFECT: simplifying the assembly of a system with two devices for extending a movable part of furniture.21 cl, 25 dwg

Description

[0001] The invention relates to a system with two devices for extending a movable part of furniture, wherein the devices contain a trigger element movable between a blocking position and a releasing position, wherein the displacement of the trigger elements to the releasing position releases the corresponding device from the retracted position, wherein the trigger elements of the devices are connected to each other via a synchronizing shaft, wherein the displacement of at least one of the trigger elements is transmitted to the rotation of the synchronizing shaft, wherein the synchronizing shaft contains a first synchronizing element and a second synchronizing element, wherein at least one of the mentioned synchronizing elements contains at least one transmission element, wherein at least one of the trigger elements contains at least one response transmission element,and wherein the transmission element(s) and the counter transmission element(s) convert between the rotation of the synchronizing shaft and the displacement of the trigger elements,

[0002] Such a system is known from AT 514865 B1. The system comprises a first drive unit and a second drive unit, which are connected to each other via a synchronizing rod. The drive units comprise a connecting element in which a locking element is formed integrally. The connecting element is mounted so as to be able to rotate about the axis of rotation. In the retracted position, the drive unit is in the locking position. In this case, the locking element prevents the latching element from shifting in the heart-shaped track and, therefore, prevents the extension movement of the movable furniture part. An overstroke applied by the user relative to the movable furniture part moves the latching element into the overstroke section of the slotted track. After the overstroke is completed, the latching element shifts into the synchronizing surface of the connecting element.This applies a force to the coupling element, causing the coupling element to rotate around its axis of rotation. A toothed rack, arranged in an arc, is also provided on the coupling element. Via the toothed rack, the coupling element's rotation can be transmitted to a toothed wheel provided on the synchronizing rod. The synchronizing rod is rotatably mounted on the first drive device via a holder. The rotation of the synchronizing rod is transmitted to the toothed rack of the coupling element of the opposite, mirror-symmetrical second device via a toothed wheel provided at the opposite end.

[0003] Systems of the type described above can present difficulties in assembly. This is due to the fact that, in general, the devices themselves are first mounted to the furniture body or a movable part of the furniture. Assembling devices already connected via a synchronizing shaft is inconvenient when mounted on the furniture body or movable part. Accordingly, the synchronizing shaft must be connected to the devices once they are permanently mounted. Consequently, when the synchronizing shaft is mounted, there is a predetermined and largely constant distance between the devices. This leads to difficulties in connecting the synchronizing shaft to the devices. For example, provision may be made for inserting the synchronizing shaft into corresponding slots on the devices. To achieve this, the synchronizing shaft must be longer than the clearance between the devices. However, in this case, the synchronizing shaft cannot be inserted into both devices.Alternatively, a shorter synchronising shaft may be possible, although in this case additional connecting elements must be provided for connection to the devices, and these must be attached to the devices in a cumbersome manner during assembly.

[0004] The object of the invention is to provide a system of the kind mentioned above, which is characterized by simplified assembly.

[0005] The objective is achieved due to the fact that the first synchronizing element and the second synchronizing element are indirectly or directly, separably and rotationally rigidly connected to each other by connecting at least one connecting portion with at least one connecting section.

[0006] Accordingly, one of the synchronizing elements can first be connected to one of the devices in the intended manner. In the next step, the other synchronizing element can be connected to the second device in the intended manner. For example, the synchronizing elements can be inserted into sockets on the devices. A connection can then be established between the synchronizing elements via a connecting section and a connecting section. Thus, a synchronizing shaft with a composite structure is provided. Accordingly, assembly is simplified by eliminating the aforementioned discrepancy between the clearance between the devices and the length of the synchronizing shaft. The synchronizing shaft can be longer than the clearance between the devices, for example, since it can first be partially received in the devices with synchronizing elements before a connection is established between the connecting section and the connecting section.

[0007] The synchronizing shaft can be designed as a shaft. In this context, the shaft should not be understood as a purely cylindrical component. In particular, the shaft need not necessarily have a circular cross-section, but may instead have another type, such as an elliptical or polygonal cross-section. Furthermore, the shaft's cross-sectional shapes may vary along the shaft's longitudinal extension. Furthermore, the shaft may be composite. In general, the shaft may be an elongated structure with a central longitudinal axis. Preferably, the shaft should be designed to transmit torque.

[0008] The device may be in a retracted position when the movable furniture part is closing relative to the furniture body. For example, a drawer may be in a closed position when the device is in the retracted position. Two devices, for example, may be positioned opposite each other on two sides of the drawer. In this case, the drive units may be provided on the furniture body. Force may be transmitted between the drive units and the devices, which can initiate and / or maintain the extension of the movable furniture part. It is also possible for the devices to be provided on the furniture body and for the drive units to be provided on the movable furniture part, such as a drawer.

[0009] The compact design may result in a system of devices characterized in that at least one of the trigger elements is at least predominantly linearly movable relative to the casing of the corresponding device.

[0010] According to a preferred embodiment of the invention, the connection of at least one connecting portion to at least one connecting section is positively connected in the circumferential direction relative to the central longitudinal axis of the synchronizing shaft, wherein the connection is preferably a polygonal connection. The trigger elements of the two devices can be synchronized by transmitting a significant torque along the synchronizing shaft. The positive connection in the circumferential direction ensures reliable transmission of this torque. 0011 Alternatively or additionally, it can be provided that the connection of at least one connecting portion to at least one connecting section is preferably a positive connection that is detachable in a direction perpendicular to the central longitudinal axis of the synchronizing shaft. Accordingly, the assembly direction can be oriented perpendicular to the central longitudinal axis of the synchronizing shaft. In this direction, a larger volume of space is available in normal installation situations. For example, this can be the space available under a drawer. In particular, the space available in this direction is independent of the distance between the devices. Thus, a direction perpendicular to the central longitudinal axis of the synchronizing shaft can represent the preferred installation direction.Accordingly, simple and convenient installation and removal of the synchronizing shaft on the devices can be achieved.

[0012] A positive connection generally does not require that the transmission of force and / or torque be exclusively positive. On the contrary, it is possible that frictional transmission may also occur, at least partially.

[0013] It can also be provided that the connection of at least one connecting portion with at least one connecting section is, preferably, a positive connection that is detachable along the central longitudinal axis of the synchronizing shaft.

[0014] According to the preferential additional aspect

[0015] According to the invention, the connecting portion comprises a connecting socket that can at least partially receive a connecting section, and the connecting socket comprises an opening in a radial direction relative to the central longitudinal axis of the synchronizing shaft. The direction transverse to the central longitudinal axis corresponds to the preferred assembly direction, as explained above. Accordingly, the connecting socket can mate with the connecting section in the preferred mounting direction. For example, the connecting socket can be positioned on the connecting section in the preferred mounting direction.

[0016] Reliable force transmission can be achieved if the connecting section has a polygonal cross-section, and the connecting socket of the connecting portion is designed, at least in part, so that it corresponds to the cross-section of the connecting section.

[0017] The coupling socket and coupling section are easy to manufacture and assemble, particularly if the coupling section comprises at least two surface areas parallel to the central longitudinal axis of the synchronizing shaft, and preferably, at least two of the surface areas are parallel to each other. Thus, the coupling socket can be positioned on the coupling section very simply, particularly in the preferred mounting direction.

[0018] It may also be provided that the connecting section comprises at least one latching element, wherein the connecting socket comprises at least one corresponding latching element of at least partially corresponding shape. Thus, the connecting section is in turn securely retained in the connecting socket. Secondly, tactile and / or acoustic feedback is provided for the user performing the assembly when the connection between the parts is established.

[0019] A preferred embodiment of the invention may be characterized in that the synchronizing shaft comprises a connecting portion, in that the connecting portion comprises end regions at each of the ends, in that the connecting portion comprises a mating profile section in at least one of the end regions, wherein at least one mating profile section is preferably configured as a recess.

[0020] The connecting part, for example, can be a section of rod material or profile cut to length. Accordingly, the appropriate length of the connecting part can be obtained cost-effectively for the respective application, for example, for the required installation position, in particular for the actual clearance between two devices. The remaining parts of the synchronizing shaft can advantageously be designed as standard or spare parts, in particular as borrowed parts, in a cost-effective manner, regardless of the installation situation and, in particular, the required overall length of the synchronizing shaft.

[0021] In particular, it can further be provided that at least one of the synchronizing elements comprises a profile section at one end, and that a rotationally secured and preferably detachable connection can be established by connecting the profile section to one of the mating profile sections of the connecting part. In this way, reliable transmission of forces and / or torque between the synchronizing element and the connecting part can be achieved.

[0022] It is also possible that the profile section and the counter profile sections are designed in such a way that tolerances regarding the overall length of the synchronizing shaft can be compensated. For this purpose, for example, the profile section can be inserted into the counter profile section only to the required depth. Accordingly, the connecting part can be designed somewhat shorter than required for the planned installation location. In this case, an appropriately long profile section that can be inserted into the counter profile section to the required depth can result in sufficient allowable margin to achieve the required overall length of the synchronizing shaft. The same applies, of course, if the counter profile section is designed as a protrusion and the profile section as a recess.

[0023] A preferred embodiment of the invention may be such that the connecting portion is provided on the adapter, and such that the adapter comprises a profile section located opposite the connecting portion, and such that a rotationally secured and preferably detachable connection can be established by connecting the profile section to one of the mating profile sections. The adapter may therefore be a separate part. This provides the particular advantage that the connecting portion and / or the connecting section do not necessarily have to be provided on the connecting part. Accordingly, the connecting part can be manufactured particularly easily. This is particularly advantageous in that the connecting part can be the only part of the synchronizing shaft that must adapt to the actual clearance between the devices.Other parts, in particular the adapter, can be provided as standard or spare parts, in particular as borrowed parts in a cost-effective manner.

[0024] An advantageous additional aspect of the invention may be that the connection of the profile section of at least one synchronizing element and / or the profile section of the adapter with one of the mating profile sections is a positive connection in the peripheral direction relative to the central longitudinal axis of the synchronizing shaft, wherein the connection is further preferably a polygonal connection. Thus, reliable transmission of force and / or torque can be achieved. This further ensures simple manufacture and assembly.

[0025] Alternatively or additionally, it can be envisaged that the connection of the profile section of at least one synchronizing element and / or the profile section of the adapter with one of the mating profile sections is a connection that can terminate along the central longitudinal axis of the synchronizing shaft, and preferably has a frictional engagement. Excessive forces and / or torques do not necessarily have to be transmitted along the central longitudinal axis of the synchronizing shaft. Accordingly, a frictional engagement connection can be sufficient. In particular, even a slight interference fit between the contact partners can be sufficient. Thus, simple manufacturing and assembly can be achieved. A removable frictional engagement connection can also be used to compensate for length tolerances relative to the overall length of the synchronizing shaft, as explained above.

[0026] According to a preferred embodiment of the invention, it is proposed that the profile section of at least one synchronizing element and / or the profile section of a further adapter comprise a polygonal, preferably I-shaped, T-shaped or L-shaped cross-section, and that at least one corresponding profile section of the connecting part is designed as a recess corresponding at least partially to the profile section of at least one synchronizing element and / or the profile section of the adapter. This results in a reliable transmission of force in the peripheral direction relative to the central longitudinal axis of the synchronizing shaft.

[0027] If at least one latching element is additionally preferably provided in the region of at least one of the profile sections, wherein at least one latching element is particularly preferably elastically tensionable in the direction of the central longitudinal axis of the synchronizing shaft, the frictional connection in the direction of the central longitudinal axis of the synchronizing shaft can be achieved in a simple manner.

[0028] A compact system can be achieved if it is provided that the devices comprise a housing, that the housings comprise a shaft opening, that the shaft openings provide, at least in areas, a connection with the corresponding internal space of the housings in the direction of the central longitudinal axis of the synchronizing shaft, and that the synchronizing elements are at least partially received in the corresponding shaft opening.

[0029] The synchronizing elements may therefore be at least partially housed in a corresponding casing. For example, it may be possible for at least one of the synchronizing elements to be inserted into the casing from the outside via a connection to the internal space provided by a shaft opening after the corresponding casing has been assembled. However, it is also possible for at least one of the synchronizing elements to be housed within the casing before the casing is assembled. The casing, for example, may be composite, in particular comprising a first casing half and a second casing half. Assembling the casing may then involve assembling the casing halves, in particular connecting, preferably snapping, the casing halves together. It is possible for at least areas of the synchronizing elements to be accessible after being placed in the casing.In particular, the profile section and / or connecting section and / or connecting portion of at least one of the synchronizing elements may be accessible. On the one hand, accessibility may be provided via a shaft opening. On the other hand, it is possible for at least one of the synchronizing elements to partially protrude from the housing. This simplifies establishing a connection between at least one of the synchronizing elements and the adapter and / or the connecting portion and / or the other of the two synchronizing elements.

[0030] A preferred additional embodiment of the invention may be characterized in that the opening for the casing shaft of at least one of the devices comprises a recess, and in that the recess, at least in regions, provides a connection with the corresponding inner part of the casing in a direction perpendicular to the central longitudinal axis of the synchronizing shaft. Thus, the connection between at least one of the synchronizing elements with the adapter and / or with the connecting part and / or with the other of the two synchronizing elements can be simplified. In particular, the connection can be implemented in a preferred mounting direction perpendicular to the central longitudinal axis of the synchronizing shaft.

[0031] In particular, the recess can preferably provide access to at least parts of the coupling section and at least one synchronizing element located in the shaft bore. Accordingly, the coupling portion, in particular the coupling socket, can preferably be located on the coupling section in a preferred mounting direction. Here, the coupling portion can be inserted through the recess into the coupling section in the preferred mounting direction.

[0032] Reliable positioning of at least one of the synchronizing elements in the corresponding shaft bore can be achieved if it is provided that at least one of the synchronizing elements comprises a stop section, wherein the stop section is preferably designed as a shaft shoulder, that the shaft bore of at least one of the devices comprises a journal, and that at least one synchronizing element, by means of its stop section, abuts at least partially against the journal. Correct positioning of the synchronizing element, for example, can be such that the synchronizing element is inserted into the shaft bore to the required depth, wherein the required depth can be such that the transmission element of the synchronizing element engages with the mating transmission element of the trigger element.

[0033] If the thrust portion is formed as a shaft shoulder, the shaft shoulder may preferably be shaped such that the synchronizing element tapers in the direction from its profile section or its connecting section toward the opposite end. A transmission element may be provided in the region of the opposite end. Accordingly, the journal may be configured to provide a cross-sectional taper in the direction from the outside of the housing to the inside of the housing. Thus, the synchronizing element can be supported in the shaft bore in at least this direction.

[0034] Furthermore, the support of at least one of the synchronizing elements in the opposite direction may be achievable if at least one synchronizing element further comprises a retaining section, wherein the retaining section is preferably formed as a shaft shoulder, if the shaft opening of at least one of the devices further comprises a retaining shoulder, and if at least one synchronizing element is retained by means of a thrust portion on the neck and by means of a retaining portion on the retaining shoulder in both directions along its central longitudinal axis.

[0035] Accordingly, the synchronizing element can be securely held in place by the housing. In particular, at least one of the devices can be provided pre-assembled as a structural unit with the synchronizing element. It is therefore possible for one device to be provided pre-assembled, while the other device is not initially connected to its associated synchronizing element, i.e., before being connected to the synchronizing shaft. Thus, the devices can be easily distinguished from one another, simplifying the assembly of the system relative to the movable furniture part or furniture frame.

[0036] A reliable transmission between the rotation of the synchronizing shaft and the movement of at least one of the trigger elements can be achieved according to a preferred embodiment of the invention due to the fact that at least one of the transmission elements is designed as a protrusion that extends at least in areas along the central longitudinal axis of the synchronizing shaft, which is limited in the circumferential direction and projects in the radial direction, and that at least one of the mating transmission elements is designed as a recess corresponding to at least one transmission element.

[0037] Below, the invention is explained in more detail with reference to an example of an embodiment shown in the drawings.

[0038] Drawings show:

[0039] Fig. 1: schematic exploded view of the device,

[0040] Fig. 2: schematic top view of the device,

[0041] Fig. 3: schematic top view of the first half of the casing,

[0042] Fig. 4: Schematic top view of the carriage,

[0043] Fig. 5: Schematic perspective view of the carriage,

[0044] Fig. 6: additional schematic perspective view of the carriage,

[0045] Fig. 7: schematic perspective view of the pivot arm,

[0046] Fig. 8: additional schematic perspective view of the pivot arm,

[0047] Fig. 9: schematic perspective view of the deflector,

[0048] Fig. 10: schematic perspective views of the pusher,

[0049] Fig. 11: schematic perspective view of the trigger element,

[0050] Fig. 12: Another schematic perspective view of the trigger element,

[0051] Fig. 13: schematic cross-sectional views of the device with inserted synchronizing elements,

[0052] Fig. 14: schematic top view of the device with the carriage in the retracted position,

[0053] Fig. 15: schematic top view of the device, with the carriage in the range of movement between the retracted position and the extended position,

[0054] Fig. 16: schematic view of the device, with the carriage in the extended position,

[0055] Fig. 17: schematic view of the device, with the carriage in the range of movement between the extended position and the retracted position,

[0056] Fig. 18: additional schematic top view of the device, with the carriage in the range of movement between the extended position and the retracted position,

[0057] Fig. 19: schematic perspective view of the spring carriage, spring element, support element and adjusting lever,

[0058] Fig. 20: additional schematic perspective view of the spring carriage, the spring element, the support element and the adjusting lever,

[0059] Fig.21: schematic cross-sectional view of the guide path area of ​​the device,

[0060] Fig. 22: Schematic exploded view of the synchronizing shaft,

[0061] Fig. 23: schematic perspective view of two devices that are connected to each other via a synchronizing shaft,

[0062] Fig. 24: schematic top view of the device with a latch, and

[0063] Fig. 25: Schematic perspective view of the latch.

[0064] Fig. 1 shows a schematic exploded view of the device 1. As can be seen from the drawing, the device 1 may have a casing 9, which may comprise a first casing half 10 and a second casing half 20. Fig. 2 shows a schematic top view of the device 1, wherein the second casing half 20 is not shown. For example, this may correspond to a situation in which the second casing half 20 is removed.

[0065] As can be seen from Figs. 1 and 2, the device 1 may comprise a carriage 30, which may be mounted so as to be movable relative to the casing 9. The carriage 30 may include a drive unit stopper 51. The drive unit stopper 51 may be provided on a pusher 50, which may be supported so as to be movable on the carriage 30. The pusher 50 may be biased by means of a spring 55 on the carriage 30.

[0066] As shown in more detail in Fig. 1 and 2, the device 1 may further comprise a pivot arm 40. The pivot arm 40 may be pivotally mounted on the carriage 30. An additional stopper 45 of the drive unit may be provided on the pivot arm 40. The pivot arm 40 may include a guide element 42, which may be configured as a guide pin. In addition, a deflector 49 may be provided. The deflector 49 may be mounted so as to be pivoted and / or offset on the carriage 30, on one side, and mounted so as to be pivoted and / or offset on the pivot arm 40, on the other side.

[0067] The device 1 may further comprise a trigger element 90. The trigger element 90 may be provided with the possibility of movement on the casing 9. In particular, the trigger element 90 may be displaced relative to the casing 9 by means of a return spring 99.

[0068] From Figs. 1 and 2, it can be further understood that the device 1 can comprise a spring element 65. The spring element 65 can comprise two extension springs, in particular, coil springs. The spring element 65 can be mounted on a spring carriage 60 on one side. The spring carriage 60 can be mounted on the casing 9 in such a way that it is movable, in particular linearly displaceable.

[0069] The spring carriage 60 may have a transmission device 62. Force may be transmitted between the transmission device 62 and the clamping device 38 (see Fig. 4) of the carriage 30.

[0070] On the side of the spring element 65 opposite the spring carriage 60, the spring element 65 can be supported on the support element 75. The support element 75 can be movable relative to the casing 9. Thus, the preload of the spring element 65 can be modified. As can be seen from Fig. 2, an adjustment lever 70 can be provided for adjusting the support element 75. The adjustment lever 70, for example, can be pivotally mounted on the casing 9.

[0071] As can be seen from Fig. 1, 2 and 22, the device 1 may comprise a first synchronizing element 101 or a second synchronizing element 105. The synchronizing elements 101, 105 are explained in detail elsewhere in this document.

[0072] Fig. 3 shows a schematic top view of the first half 10 of the casing. As can be seen from the drawing, the first half 10 of the casing can contain guide sockets 11.1, 11.2, 11.3, 11.4. Guide sockets 11.1, 11.2, 11.3, 11.4 can serve to guide the carriage 30. For this purpose, projections 32.1, 32.2, 32.3 can be provided on the carriage 30, as can be easily seen in Fig. 6. Projections 32.1, 32.2, 32.3, for example, can be guided in guide sockets 11.1, 11.2, 11.3, 11.4. In particular, guide sockets 11.1, 11.2, 11.3, 11.4 can be designed as guide tracks.

[0073] As can be further seen from Fig. 3, a guide track 12 can additionally be provided on the first half 10 of the casing. The guide track 12 can serve to guide the pivot lever 40. For example, as shown in Fig. 7, the pivot lever 40 can include a guide element 42. The guide element 42 can be a pin. The guide element 42 can be guided in the guide track 12.

[0074] Furthermore, it can be seen in Fig. 3 that the first half 10 of the casing can have a spring carriage guide 13. The spring carriage 60 can be guided on the spring carriage guide 13 in a linearly movable manner. In particular, for example, the spring carriage 60 can snap onto the spring carriage guide 13. For this purpose, the snap hooks 13.1, 13.2 can be provided on the spring carriage guide 13. As can be seen from Fig. 19 and 20, the spring carriage 60 can have guide jumpers 64.1, 64.2. The guide jumpers 64.1, 64.2, for example, can be engaged from behind by means of the snap hooks 13.1, 13.2.

[0075] Furthermore, the first half 10 of the casing may comprise a guide 15 of the supporting element. The supporting element 75 may be guided in the guide 15 of the supporting element. In particular, the supporting element 75 may be guided on walls 15.1, 15.2 of the guide 15 of the supporting element. The movability of the supporting element 75 relative to the casing 9 may be limited, for example, by stoppers 15.3, 15.4 provided on the guide 15 of the supporting element.

[0076] In the area of ​​the guide 15 of the supporting element, the guide path 14 can also be provided on the first half 10 of the casing, as shown in more detail in Fig. 3. The guide path 14 can serve to guide the guide element 78.2 of the supporting element 75 (see Fig. 20).

[0077] The first half 10 of the casing may include a seat 16 for a trigger element, as shown in more detail in Fig. 3. The seat 16 for a trigger element may serve to receive a trigger element 90. As can be seen in Fig. 11 and 12, the trigger element 90 may include a first arm portion 91 and a second arm portion 92. The arm sections 91, 92, for example, may be positioned at a right angle to each other. The second arm portion 92 may include an activation surface 93. As can be seen in Fig. 3, the seat 16 for a trigger element may have an opening 16.2 for an arm, through which the second arm portion 92 can protrude at least partially from the casing 9. In this way, the activation surface 93 becomes accessible from the outside of the casing.

[0078] In the first section 91 of the arm, the trigger member 90 may comprise a retaining device 98. The seat 16 for the trigger member may have a retaining aperture 16.1, which can be used to connect with the guide track 12. The guide track 12 is explained in more detail elsewhere in this document. The retaining device 98 can be guided through the retaining aperture 16.1 into the region of the guide track 12. Preferably, a seat 91.1 for a damper is provided in the region of the retaining device 98 on the trigger member 90, in which a damper can be received. The damper can preferably be made of a soft and / or damping material.

[0079] The trigger member 90 can be movably mounted on the casing 9. In particular, the trigger member 90 can rest together with the rear side 97 (see Fig. 12) on the lower part 16.6 of the trigger member socket 16. In addition, a guide jumper 16.3 can be provided on the trigger member socket 16, which can be engaged in the recess 97.1 of the trigger member 90 (see Fig. 12).

[0080] As can also be seen in Fig. 3, the spring support 16.4 can be provided on the first half 10 of the casing. The return spring 99 can be supported on the spring support 16.4. For example, the return spring 99 can be a torsion spring. The return spring 99 can counteract the displacement of the trigger member 90. The seat 16 for the trigger member can include a spring holder 16.5, in which the first leg 99.1 of the return spring 99 can be held. The second leg 99.2, for example, can be supported on the support zone 92.1 of the trigger member 90 (see Fig. 11).

[0081] Fig. 3 shows that the first half 10 of the casing may have a shaft opening 17. The shaft opening 17 may receive the synchronizing element 101, 105. For example, the synchronizing element 101, 105 may be inserted or positioned in the shaft opening 17. The shaft opening 17 may have a neck 17.1, which the thrust portion 103, 107 of the synchronizing element 101, 105 may support with rotational support.

[0082] Furthermore, the recess 17.3 can be provided in the region of the opening 17 for the shaft, as shown in Fig. 23. Preferably, the recess 17.3 can be provided in the first half 10 of the casing. The recess 17.3 can represent an opening in the wall of the housing. Through the recess 17.3, a part of the opening 17 for the shaft can be accessible from a direction transverse to the central longitudinal axis of the opening 17 for the shaft. It is also possible to provide the recess 17.3 on the second half 20 of the casing or on both halves 10, 20 of the casing.

[0083] As mentioned above, the guide track 12 may be provided on the first half 10 of the casing. The guide member 42 of the rotary lever 40 (see Fig. 4) may be guided in the guide track 12. The guide track 12 may be designed as a closed-loop rotation guide. The direction of rotation may correspond to the clockwise direction in Fig. 3. The guide track 12 may have a first locking section 12.1 and a second locking section 12.4. Between the first locking section 12.1 and the second locking section 12.4, the guide track 12 may have an extension section 12.2 and a folding section 12.3 in the direction of rotation. Between the second fixing section 12.4 and the first fixing section 12.1, the guide track 12 may have a retraction section 12.5 and a tightening section 12.6.

[0084] The pivot arm 40 is shown in more detail in Fig. 7 and 8. The pivot arm 40 may have an arm section 40.1 to which a curved section 40.2 is adjacent at an angle. The load-bearing area 41 of the pivot arm may be provided on the arm section 40.1. The load-bearing area 41 of the pivot arm may have the form of a drilled hole, as shown in this document. The fixing area 41.1 of the pivot arm may be provided in the area of ​​one side of the pivot arm 40, currently, in the area of ​​the lower side 40.4 of the pivot arm. The fixing area 41.1 of the pivot arm, for example, may form a surface area that is moved back relative to the lower side 40.4 of the pivot arm.

[0085] The additional stopper 45 of the drive unit may be provided in the curved section 40.2. The additional stopper 45 of the drive unit may be provided as a deflection roller 45.1, which can be rotatably mounted on the pivot arm 40. Preferably, the deflection roller 45.1 may be made of a soft and / or damping material.

[0086] As can be further seen from Fig. 7, the deflecting device 46 can be provided in the region of the additional stopper 45 of the drive unit. The deflecting device 46 can protrude beyond the pivot arm 40 in thickness, for example, in such a way that the deflecting device 46 protrudes beyond the upper side 40.3 of the pivot arm and / or beyond the lower side 40.4 of the pivot arm. On the side facing away from the pivot arm 40, the deflecting device 46 can include a deflecting surface 46.1.

[0087] The guide member 42 may be provided on the pivot arm 40. Preferably, the guide member 42 may be located in the transition region between the arm section 40.1 and the curved section 40.2. The guide member 42 may, for example, be a pin-type. As can be seen from Figs. 7 and 8, the guide member 42 may protrude beyond the upper side 40.3 of the pivot arm and the lower side 40.4 of the pivot arm. The guide projection 42.1 may also be provided in the region of the guide element 42. The guide projection 42.1 may have a larger outer diameter than the guide element 42. Preferably, the guide projection 42.1 is arranged concentrically with the guide element 42. The guide projection 42.1 may not protrude as significantly beyond the upper side 40.3 of the pivot arm and / or the lower side 40.4 of the pivot arm as the guide element 42.

[0088] As further shown in Fig. 7, a guide projection 48 can be formed on the upper side 40.3 of the pivot arm. The guide projection 48 can protrude beyond the upper side 40.3 of the pivot arm. Additionally, a damper 47.2 can be retained on the pivot arm 40, for example, in a damper seat 47.1. The damper 47.2 can preferably be made of a soft and / or damping material.

[0089] The pivot arm 40 may further comprise a seat 44 for a deflector, for example, in the form of a recess. Preferably, the seat 44 for the deflector is formed in the region of the curved section 40.2. As can be seen, in particular, in Fig. 8, the seat 44 for the deflector may have rib seats 44.1 with a transverse undercut.

[0090] As can be seen in Fig. 6, the pivot arm support device 37.1 can be provided on the carriage 30. It can be a cylindrical protrusion. In addition, the latch element 37.2 can be provided in the area of ​​the pivot arm support device 37.1. The latch element 37.2, for example, can be formed as a latch tab.

[0091] The carriage 30 may further comprise a guide track 34. Preferably, the guide track 34 may be configured as an arc-shaped slot through the carriage 30. In addition, a guide recess 37 may also be formed on the carriage 30. Preferably, the guide track 34 and / or the guide recess 37 may be circular arc-shaped, with the supporting device 37.1 of the pivot arm forming the center of the circular arc.

[0092] As can be seen in Fig. 4, the pivot arm 40 can be pivotally mounted on the carriage 30 in such a way that the supporting device 37.1 of the pivot arm of the carriage 30 is received in the supporting area 41 of the pivot arm of the pivot arm 40. Here, the pivot arm 40 can be held on the carriage 30 by snapping the snap member 37.2 into the locking area 41.1 of the pivot arm.

[0093] As shown in this document, the pivot arm 40 can be inserted into a recess that can be formed in the region of the lower side 30.2 of the carriage for the carriage 30. The guide member 42 can protrude beyond the carriage 30 at the lower side 30.2 of the carriage. In addition, the guide member 42 can extend through the guide track 34 such that it also hangs over the carriage 30 at the upper side 30.1 of the carriage. The guide projection 42.1 can preferably be guided on the guide track 34. The guide projection 48 of the pivot arm 40 can be guided on the guide recess 37 of the carriage 30.

[0094] Fig. 4 further shows that the deflector 49 can be mounted in the socket 44 for the deflector of the pivot arm 40 with the projection 49.2. As can be seen in Fig. 9, the deflector 49 can have extension ribs 49.3 transversely and be displaced in the area of ​​the projection 49.2. The extension ribs 49.3 can be received in the projections 44.1 of the socket 44 for the deflector of the pivot arm 40.

[0095] As Fig. 9 further shows, the deflector 49 may have a socket 49.1 for the deflector support in the end region facing away from the projection 49.2. The socket 49.1 for the deflector support may be a drilled hole, as shown here. The deflecting shoulder 49.4 may be formed on one side of the deflector 49 along the longitudinal extension. The deflecting shoulder 49.4 may form a deflecting surface 49.5.

[0096] The deflector 49 can be rotatably mounted on the carriage 30. For this purpose, the supporting zone 39 of the deflector can be provided on the carriage 30, as can be seen in Fig. 6. The supporting zone 39 of the deflector can be formed as a protrusion, for example, a cylindrical protrusion. The supporting zone 39 of the deflector can be received in the supporting support socket 49.1 of the deflector to form a rotating supporting support.

[0097] As can also be seen in Fig. 4, the pusher 50 can be provided on the carriage 30. The pusher 50 can form a stopper 51 of the drive unit. The pusher 50 can be received in the pusher seat 36 of the carriage 30. The pusher seat 36 is shown in more detail in Fig. 5. Accordingly, the pusher seat 36 can have a receiving space 36.1, in which the pusher 50 can be at least partially received.

[0098] In the region of the seat 36 for the pusher facing the stopper 51 of the drive unit, a supporting surface 36.4 may be provided, which may limit the receiving space 36.1, at least in certain regions. A comparatively formed abutment surface 36.3 may be provided opposite. In addition, the seat 36 for the pusher may have mating latching elements 36.2 in the region of the receiving space 36.1, which may be formed as recesses and / or apertures, as shown.

[0099] A possible design of the pusher 50 can be obtained from Fig. 10. The pusher 50 can have a spring support 53 and a spring stop 54. The spring 55 can be located between the spring support 53 and the spring stop 54. The spring 55 can be a compression spring, for example, a coil spring. As can be seen in Fig. 10, the spring 55 can be supported by a first end 55.1 of the spring on the spring support 53. Here, there is a possibility that the retaining projection 53.1 is provided on the spring support 53. For example, the retaining projection 53.1 can be designed as a latching element that can latched on the first end 55.1 of the spring.

[0100] The spring stop 54 may have a transverse extension 54.2, which is less than the transverse extension, in particular, of the outer diameter of the spring 55 in the region of the second end 55.2 of the spring. As can be seen from Fig. 10a, the spring may therefore protrude transversely beyond the spring stop 54.

[0101] In the area of ​​the stopper 51 of the drive unit, the pusher 50 may have a driving surface 51.1, on which the drive unit 2 can act. The pushing surface 54.3 may be formed at the end of the pusher 50 facing away from the stopper 51 of the drive unit, in particular, on the spring stop 54. In addition, the counter-support surface 51.2, facing the stopper 51 of the drive unit, may be provided on the spring support 53. The pusher 50 may further comprise latching elements 56, as can be seen more clearly in Fig. 10b.

[0102] In the installed state (see Fig. 4), the latching elements 56 of the pusher 50 can be latched with the corresponding latching elements 36.2 of the carriage 30. In this case, the latching elements 56 and the corresponding latching elements 36.2 can be designed with the possibility of providing movability, in particular, linear movability of the pusher 50.

[0103] The second end 55.2 of the spring for the spring 55 of the pusher 50 can rest against the stop surface 36.3 of the seat 36 for the pusher of the carriage 30. In particular, the portions of the second end 55.2 of the spring protruding beyond the spring stop 54 can support the stop surface 36.3 of the abutment. The counter-support surface 51.2 of the pusher 50 can support the support surface 36.4.

[0104] Fig. 23 shows a system of device 1 and second device 1', which are connected to each other by means of a synchronizing shaft 100. An embodiment of the synchronizing shaft 100 is illustrated in Fig. 22 using an exploded view. Accordingly, the synchronizing shaft 100 can be made of several parts. In particular, the synchronizing shaft 100 can include a first synchronizing element 101 and a second synchronizing element 105, which are connected to each other by being fixed in a rotatably manner through a connecting portion 110.

[0105] The synchronizing elements 101, 105 can be formed as a shaft. The radially projecting transmission elements 102, 106 can be provided on the synchronizing elements 101, 105. As shown in Fig. 22, the transmission elements 102, 106 can be designed as separate circumferentially limited projections extending along at least a part of the longitudinal extension of the synchronizing elements 101, 105. However, there is also a possibility that the transmission elements 102, 106 are formed as elements profiled in the circumferential direction. In particular, tooth cutting can also be possible.

[0106] Furthermore, the synchronizing elements 101, 105 may have stop sections 103, 107, which, for example, may be formed as shoulders. Additionally, the second synchronizing element 105 may also have a retaining section 108, which may also be formed as a shoulder.

[0107] The first synchronizing element 101 may have a profile section 104 at its end region. As illustrated herein, for example, a T-shaped section may be selected. Latching elements 104.1 may additionally be provided in the region of the profile section 104.

[0108] In contrast, the second synchronizing member 105 may include a connecting section 109 at the end region. The connecting section 109, for example, may be formed by two surfaces formed parallel to each other and parallel to the longitudinal axis of the second synchronizing member 105. The latching elements 109.1, for example, may be provided on the surfaces of the connecting section 109, which may be formed as recesses.

[0109] The connection of the second synchronizing element 105 with the connecting portion 110 can be achieved by means of the adapter 113. In this regard, the adapter 113 can comprise a connecting portion 115 having a connecting socket 115.1. The connecting socket 115.1 can be formed in such a way that it corresponds to the connecting section 109 of the second synchronizing element 105. The connecting socket 115.1 can form a receiving area of ​​the connecting section 109, open in the radial direction on one side. The mating latching elements 115.2 can be formed in the connecting socket 115.1. By latching the latching elements 109.1 with the mating latching elements 115.2, the adapter 113 can be fixed in the radial direction on the second synchronizing element 105.

[0110] The profile section 104 may be provided at the end of the adapter 113 facing in the direction from the connecting portion 115. The profile section 104 may be preferably formed similarly to the profile section 104 of the first synchronizing element 101.

[0111] The connecting portion 110, for example, may be a section of rod material or profile cut to length. In the end regions 112, 113, the connecting portion 110 may have mating profile sections 111.2, 112.2 on both sides. The counter profile sections 111.2, 112.2 can be formed as recesses in the end surfaces 111.1, 112.1 provided in the end regions 112, 113. In particular, the counter profile sections 111.2, 112.2 can be formed in such a way that they correspond to the profile sections 104, 114. Accordingly, the counter profile sections 111.2, 112.2 can be formed as T-shaped recesses in the longitudinal end surfaces 111.1, 112.1 of the connecting part 110. It is possible, but not obligatory, that the counter profile sections 111.2, 112.2 can have counter latching elements corresponding to the latching elements 104.1, 114.1. Alternatively or additionally, snap-in elements 104.1, 114.1 can also be used to achieve elastic tightening on the walls of the mating profile sections 111.2, 112.2.

[0112] Fig. 13 shows sections of devices 1, 1' with inserted synchronizing elements 101, 105. As can be seen from Fig. 13a, the first synchronizing element 101 can be inserted into the opening 17 for the shaft of device 1, for example, the first device 1. Due to this, the thrust portion 103 of the first synchronizing element 101 can be supported in the neck 17.1 of the opening 17 for the shaft.

[0113] As can be seen from Fig. 13b, the second synchronizing member 105 can be inserted into the shaft opening 17 of the second device 1'. On the other hand, the thrust portion 107 can be supported in the neck 17.1. In addition, the retaining section 108 can be supported on the retaining shoulder 17.2 of the shaft opening 17. Accordingly, the second synchronizing member 105 can be held fixedly in the shaft opening 17 along the longitudinal axis in both directions. In contrast, the first synchronizing member 101 can be held only in one direction so that it can be inserted into the shaft opening 17 when the casing 9 is closed, in particular, when the first half 10 of the casing and the second half 20 of the casing are assembled.

[0114] The connecting section 109 may be located in the region of the recess 17.3 of the shaft opening 17. Accordingly, the adapter 113 may be capable of connecting with the second synchronizing element 105 from a direction transverse to its longitudinal axis. In particular, the adapter 113 may be guided with the connecting section 115 through the recess 17.3 to the connecting section 109 of the second synchronizing element 105.

[0115] The trigger element 90 may comprise a first mating transmission element 95 and a second mating transmission element 96, as can be seen in Fig. 11 and 12. The mating transmission elements 95, 96 may be provided as recesses formed in such a way that they correspond to the transmission elements 102, 106. The mating transmission elements 95, 96 may preferably be arranged diametrically opposite to each other relative to the longitudinal axis of the synchronizing elements 101, 105. In particular, it may be provided that the second mating transmission element 96 is provided on an extension fragment 94, which may be provided in the transition region between the first portion 91 of the arm and the second portion 92 of the arm of the trigger element 90.

[0116] Fig. 13a shows the first synchronizing element 101 having a transmission element 102 engaged with the second mating transmission element 96 of the trigger element 90. Accordingly, the transmission element 102 is oriented such that it faces away from the image plane. The leftward displacement of the trigger element 90 in the image plane may correspond to the movement under the action of the trigger element. The leftward movement of the trigger element 90 may cause the leftward movement of the transmission element 102 and, accordingly, the rotation of the first synchronizing element 101 around the longitudinal axis.

[0117] In contrast to this, Fig. 13b shows a second synchronizing element 101 having a transmission element 106 engaged with a first mating transmission element 95 of a second trigger element 90' of the second device 1'. The second trigger element 90' can be configured similarly to the trigger element 90, but preferably the second trigger element 90' does not contain an extension fragment 94. Accordingly, it can be provided that the second trigger element 90' contains only the first mating transmission element 95.

[0118] In Fig. 13b, the transmission element 106 is oriented such that it faces the image plane. The movement of the second trigger element 90' to the left in the image plane may also correspond to the movement under the action of the trigger element. The movement of the second trigger element 90' to the left may cause the movement of the transmission element 106 to the left. However, since the transmission element 106 now points to the image plane, in contrast to the situation shown in Fig. 13a, this results in a direction of rotation of the second synchronizing element 105 that is opposite to the direction of rotation of the first synchronizing element 101.

[0119] If two devices 1, 1' are now placed opposite each other in a typical installation situation, as shown in Fig. 23, this results in a uniform direction of rotation of the synchronizing shaft 100, which is rotatably connected by fastening with the synchronizing elements 101, 105, during the movement under the action of the trigger of the two trigger elements 90, 90'. Accordingly, there is no need to provide a second device 1', which is a mirror image of the first device 1. On the contrary, two devices 1, 1' of at least substantially identical design can be synchronized with each other. Preferably, only two synchronizing elements 101, 105 with different designs must necessarily be used for this purpose. Preferably, but not necessarily, two trigger elements 90, 90' with different designs can also be used.

[0120] Fig. 19 and 20 show in more detail the spring carriage 60, the spring element 65, the carrier element 75 and the adjusting lever 70. As can be seen from the drawings, the spring element 65 can comprise one or at least two extension springs 65.1. The extension springs 65.1 can have narrowed regions 65.3 at the corresponding ends. The head regions 65.4 can adjoin the narrowed regions 65.3, wherein the head regions 65.4 can have an increased outer diameter compared to the narrowed regions 65.3.

[0121] Spring carriers 63 may be provided on the spring carriage 60 in order to accommodate the spring element 65. Preferably, the spring carriage 60 may form a space 61 for receiving a spring, in which the spring element 65 is at least partially received. The space 61 for receiving a spring may be limited by a lower part 64, two side walls 61.1, 61.2 and a rear wall 61.3. Opposite the rear wall 61.3, preferably in the direction of the carrier element 75, the space 61 for receiving a spring may be open.

[0122] The spring support 63 can be formed as recesses in the rear wall 61.3 corresponding to the narrowed regions 65.3. Preferably, the recesses are open such that they face in the direction from the lower part 64. Thus, the narrowed regions 65.3 can be easily inserted into the recesses. In Fig. 19, the spring element 65 is not inserted into the spring support 63 for better visibility of the spring support 63.

[0123] In the area of ​​the end of the spring carriage 60 opposite the rear wall 61.3, a transfer device 62 can be located. As can be seen from the drawings, a counter locking surface 62.1 can be formed on the transfer device 62. The counter locking surface 62.1 can be in contact with the locking surface 38.1 of the clamping device 38 of the carriage 30 (see Fig. 5).

[0124] Opposite the spring carriage 60, the spring element 65 can be mounted on the supporting element 75. For this purpose, spring mounting fasteners 73 can be provided, which are preferably designed in a comparable manner to the spring mounting fasteners 63 for the spring carriage 60.

[0125] As can be further seen from Fig. 19 and 20, the engaging lever 78 can be pivotally mounted on the supporting member 75. For this purpose, the engaging lever supporting support 77.1 can be provided on the supporting member 75. For example, the engaging lever supporting support 77.1 can be configured as a drilled hole. The engaging lever 78 can have a engaging lever supporting extension 78.1 in the end region, which can be held in the engaging lever supporting support 77.1. Preferably, the latching elements 75.4 can

[0126] be provided on the supporting element 75 in the region of the supporting support 77.1 of the latching lever. The latching elements 75.4, for example, can act on the surface of the latching lever 78 in such a way that it can be held fixedly on the supporting support 77.1 of the latching lever.

[0127] The engagement lever 78 can be received on the supporting member 75 in a recess 75.5 for the engagement lever. The recess 75.5 for the engagement lever can, in particular, be formed as an aperture and frame the pivoting region of the engagement lever 78.

[0128] The guide element 78.2 may be provided on the engaging lever 78, preferably at the end facing away from the supporting support 77.1 of the engaging lever. The guide element 78.2 may be formed as a protrusion on the engaging lever 78.

[0129] The supporting member 75 may further comprise a transmission member 76. As can be seen in Fig. 19, the transmission member 76 may be formed as a protrusion on the supporting member 75. Preferably, the transmission member 76 is provided in the end region of the supporting member 75 facing in the direction from the spring mounting 73. The transmission member 76 may be guided on the mating transmission member 72 of the adjusting lever 70. If present, the mating transmission member 72 may be a straight slot in the adjusting lever 70.

[0130] The adjusting lever 70 may have a bearing side 70.1 on which a socket 71.2 for the bearing support of the lever may be formed.

[0131] The socket 71.2 for the lever support can be designed as a drilled hole. By facing away from the support side 70.1, the adjusting lever 70 can additionally have an operating side 70.2. Preferably, an operating surface 70.3 is provided in the area of ​​the operating side 70.2, which can be acted upon by the user.

[0132] As already explained, the adjusting lever 70 can be pivotally mounted on the casing 9. For this purpose, the lever support projection 71.1 can be provided on the casing 9, in particular on the first half 10 of the casing (see Fig. 21). In this way, the lever support bearing 71 can be formed by receiving the lever support projection 71.1 in the lever support bearing socket 71.2.

[0133] As mentioned above, the guide member 78.2 of the supporting member 75 can be guided on the guide path 14. This is shown in more detail in Fig. 21. Here, for a better overview, only the first half 10 of the casing and the engaging lever 78 are shown in Fig. 21.

[0134] The guide path 14 can be designed as a closed-loop rotary guide and have a tension section 14.1 and a return section 14.2. The guide path 14 can define a trajectory B of movement of the guide element 78.2 when the supporting element 75 moves relative to the casing 9. Here, the movement in the first adjustment direction S1, which faces the right in Fig. 21, can correspond to an increase in the preload of the spring element 65. The movement of the supporting element 75 in the opposite second adjustment direction S2 can correspond to a decrease in the preload of the spring element 65.

[0135] The tension section 14.1 may comprise a first fixing section 14.11, a second fixing section 14.14 and a third fixing section 14.18. The fixing sections 14.11, 14.14, 14.18 may have a configuration in which the guide element 78.2 is retained thereon relative to the second adjustment direction S2. Accordingly, the movement of the supporting element 75 in the second adjustment direction S2 may be prevented if the guide element 78.2 moves into one of the fixing sections 14.11, 14.14, 14.18.

[0136] Along the movement path B, the first locking section 14.12 can be arranged between the first locking section 14.11 and the second locking section 14.14. In addition, the second deflecting section 14.15 and the third deflecting section 14.16 can be provided between the second locking section 14.14 and the third locking section 14.18. The deflecting sections 14.12, 14.15, 14.16 can cause a change in the direction of movement of the guide element 78.2. For example, the guide element 78.2 can initially perform a movement in the first adjustment direction S1 when it moves in the direction away from the first locking section 14.11. In other words, the direction of movement of the guide element 78.2 may initially correspond to the direction of movement of the supporting element 75. In the deflecting sections 14.12, 14.15, the guide element 78.2 may undergo a change in direction. In this case, the engaging lever 78 may rotate.

[0137] As can also be seen in Fig. 21, the first intermediate locking section 14.13 can be provided between the first deflecting section 14.12 and the second locking section 14.14. Additionally, the second intermediate locking section 14.17 can be provided between the third deflecting section 14.16 and the third locking section 14.18. The intermediate locking sections 14.13, 14.17 can be designed such that the guide member 78.2 is held thereon relative to the first adjustment direction S1. Accordingly, the movement of the supporting member 75 in the first adjustment direction S1 can be prevented if the guide member 78.2 moves into one of the intermediate locking sections 14.13.

[0138] After the third fixing section 14.18, along the movement path B, a return section 14.2 may follow. For example, after the third fixing section 14.18, a fourth deflecting section 14.21 may follow. After the fourth deflecting section 14.21, a return section 14.22 may follow. Finally, a fifth deflecting section 14.23 may be provided, which can establish a connection of the return section 14.2 with the tension section 14.1, in particular with the first fixing section 14.11.

[0139] As can be seen, in particular, in Fig. 24, the device 1 can comprise a latch 80. The latch 80 can be mounted on the casing 9, preferably on the second half 20 of the casing. For this purpose, a socket 28 for the latch can be provided on the second half 20 of the casing.

[0140] The latch 80 is shown in more detail in Fig. 25. The latch 80 may be an elastic and / or elastically deformable and / or displaceable element, which preferably has a base element 83. A spring section 82 may be connected to the base element 83. The spring section 82 preferably has an elastic-elastic structure. As shown in the drawings, the spring section 82 may have a meander-shaped profile section. In this way, elastic elasticity can be achieved through a flat structure.

[0141] After the spring section 82, a supporting section 81 may follow. The supporting section 81 may advantageously have retaining projections 86.2. The retaining projections 86.2 can be retained, in particular, snap into place in the seats 28.2 for the supporting support of the latch (see Fig. 23) in the region of the seat 28 for the latch of the second half 20 of the casing. In this way, the latch 80 can be supported on the casing 9 against the acting force in the direction from the base element 83 to the supporting section 81.

[0142] Furthermore, the latch 80 may have one or more biasing projections 86.3. As can be seen from Fig. 25, the biasing projections 86.3 may preferably be provided on the spring section 82 and on the base element 83. The biasing projections 86.3 may be guided on the biasing receivers 28.3 (see Fig. 23) in the area of ​​the latch socket 28. Preferably, the biasing receivers 28.3 are longer than the biasing projections 86.3, due to which the biasing of the biasing projections 86.3 can be ensured.

[0143] Furthermore, a guide projection 86.1 may be provided on the base element 83, which may be guided in the guide socket 28.1 (see Fig. 23) in the area of ​​the latch socket 28.

[0144] As can be seen from Fig. 25, the deflecting surface 87 can be provided on the base member 83. Through the deflecting surface 87, a force can be input into the latch 80, which can cause an elastic deformation of the latch 80, preferably the spring section 82, in the direction of the supporting section 81. Preferably, the deflecting surface 87 can be provided on the spring projection 84. The spring projection 84 can be formed as an elastically deformable angular section on the base member 83. Accordingly, additional elasticity of the latch 80 is provided in addition to the elasticity of the spring section 82.

[0145] As can be seen in Fig. 24, the latch 80 can be located at least partially in the region of the guide track 12. Preferably, the guide track 12 can also be provided on the second half 20 of the casing for this purpose. The guide element 42 of the pivot lever 40 can therefore be guided on the guide track 12 on the first half 10 of the casing and on the second half 20 of the casing.

[0146] Fig. 24 shows the latch 80 in a non-deformable base position. Here, the latch 80 can preferably rest together with the deflection surface 87 on the guide track 12, in particular as shown, in such a way that the folding section 12.3 is closed by the latch 80. However, due to the elastic deformability of the latch 80, the folding section 12.3 can be separated when the guide member 42 moves from the extension section 12.2 to the folding section 12.3.

[0147] Furthermore, the locking zone 85 can be formed on the latch 80, preferably on the base element 83. The locking zone 85 can be designed as a recess. As can be seen from Fig. 24, the locking zone 85 can cooperate with the guide track 12, at least in order to partially form the second locking section 12.4 of the guide track 12. Thus, after the guide element 42 is displaced by the folding section 12.3, it can be held in the second locking section 12.4. Return to the folding section 12.3 can be prevented by the latch 80, since in this position the guide element 42 cannot apply a force component to the latch 80, which can displace it toward the supporting section 81.

[0148] Below in the text, an example of the operation of device 1 is explained in more detail with reference to the operation of extending and retracting the movable part of the furniture.

[0149] Figure 2 shows a first state in which the movable furniture part may be in a closed state. The drive unit 2 may be in contact with the drive unit stopper 51. The carriage 30 is in a retracted position. The preload of the spring element 65 acts on the carriage 30 through the transmission device 62 of the spring carriage 60.

[0150] The additional stopper 45 of the drive unit rotates in the direction away from the movement path of the drive unit 2. Similarly, the deflecting surface 49.5 rotates in the direction away from the movement path of the drive unit 2.

[0151] The pusher 50 is in a fixed position. The trigger member 90 is in a locking position. Here, the retaining device 98 protrudes into the guide track 12. The guide member 42 is located in the first locking section 12.1 and is retained therein by the retaining device 98.

[0152] In Fig. 14, an additional condition is shown in which a force is applied by the drive unit 2 to the stopper 51 of the drive unit. This may correspond to an overstroke applied by the user relative to the movable part of the furniture. As a result, the pusher 50 moves from the fixed position under the action of the pre-tension of the spring 55 to the adjustment position. By transmitting the force between the pushing surface 54.3 of the pusher 50 and the activation surface 93 of the trigger member 90, the trigger member 90 moves to the releasing position. In Fig. 14, the trigger member 90 moves to the left in the image plane under the action of the pre-tension of the return spring 99. This moves the holding device 98 in the direction from the guide track 12. Accordingly, the first locking section 12.1 is disengaged, and the guide member 42 can move to the extension section 12.2.

[0153] Thus, the trigger member 90 and / or the holding device 98 of the trigger member 90 can also be construed as a latch that allows the rotation of the pivot lever 40 from the outwardly rotated position to the inwardly rotated position and blocks the rotation of the pivot lever 40 from the inwardly rotated position to the outwardly rotated position.

[0154] Additionally, the movement of the trigger member 90 causes the first synchronizing member 101 to rotate, and the rotation of the first synchronizing member 101 can be transmitted to the second synchronizing member 105 on the second device 1' via the synchronizing shaft 100. Thus, the second connected device 1' can also be subjected to the action of the trigger member.

[0155] Fig. 15 shows a situation in which the carriage 30 is in the range of movement between the retracted position and the extended position. The carriage 30 moves by decreasing the preload of the spring element 65. The guide element 42 is located in the extension section 12.2. The additional stopper 45 of the drive unit additionally rotates in the direction from the trajectory of the drive unit 2. As can be further seen from Fig. 15, the trigger element 90 moves back to the locking position again by means of the pretension of the return spring 99. The pusher 50 moves back to the fixed position by means of the pretension of the spring 55. Through the stopper 51 of the drive unit, the movement of the carriage 30 is transmitted to the drive unit 2, due to which the movable part of the furniture is extended.

[0156] Fig. 16 shows the extended position of the carriage 30. Advantageously, a plug 19 made of a flexible material can be provided on the casing 9, which makes it possible to at least reduce the rigid stop of the carriage 30 in the extended position. After passing through the extension section 12.2, the guide element 42 is displaced along the folding section 12.3. The drive unit 2 is no longer in the area of ​​​​the additional stop 45 of the drive unit and the deflecting surface 49.5. Accordingly, the drive unit 2 hinders the outward rotation of the pivot lever 40.

[0157] According to Fig. 16, the guide element 42 is now in the second locking section 12.4. Here, the guide element 42 elastically deforms the latch 8 0 during its displacement along the folding section 12.3 in order to briefly release the folding section 12.3. After the latch 80 is released, the folding section 12.3 is locked again, and the guide element 42 is prevented from returning to the folding section 12.3. The pivot lever 40 is moved into an outwardly rotated position by the displacement of the guide element 42 in the folding section 12.3. Thus, the additional stop 45 of the drive unit is now in the path of movement of the drive unit 2.

[0158] The movable furniture section can now be further extended using the extension momentum and / or manual extraction. This causes the drive unit 2 to move further away from the additional drive unit stop 45 along the movement path.

[0159] The extended position shown in Fig. 16 may represent the waiting position of the device 1. If the movable part of the furniture is now moved again in the closing direction, the drive unit 2 rests against the additional stopper 45 of the drive unit, as shown in Fig. 17. The pivot lever 40 is in the outwardly rotated position, and the additional stopper 45 of the drive unit is located in the trajectory of movement of the drive unit 2.

[0160] Upon further action on the movable furniture part, carriage 30 moves toward the retracted position through contact between drive unit 2 and additional stop 45 of the drive unit. The preload of spring element 65 increases. Guide element 42 exits second locking section 12.4 and moves along retraction section 12.5.

[0161] According to Fig. 18, the guide member 42 reaches the clamping section 12.6 after passing through the clamping section 12.5. However, the pivot lever 40 is still in the outwardly rotated position. Accordingly, the additional stopper 45 of the drive unit is still in the movement path of the drive unit 2. When an additional force is applied by the drive unit 2 to the additional stopper 45 of the drive unit, the guide member 42 moves along the clamping section 12.6 and reaches the first locking section 12.1. Here, the deflection roller 45.1 can advantageously roll along the drive unit 2. Due to the structure of the pivot lever 40, the force applied by the drive unit 2 is advantageously converted into a torque, which assists the rocking movement.

[0162] When the guide member 42 reaches the first locking section 12.1, the pivot lever 40 is in an inwardly rotated position. Accordingly, the additional stopper 45 of the drive unit moves away from the path of the drive unit 2. Now, the drive unit 2 can move toward the stopper 51 of the drive unit, thereby releasing the drive unit 2 from the force of the spring member 65. In other words, this results in the free movement of the drive unit 2 at the end of the retracting movement.

[0163] It is possible to provide a sliding device that acts on the movable part of the furniture at least during the free-running motion and at least supports the completion of the sliding motion. Alternatively, the drive unit 2 may also be moved only manually to the final closed position during the free-running motion.

[0164] When the drive unit 2 moves back to the vicinity of the drive unit stopper 51, the starting position shown in Fig. 2 is reached again.

[0165] Below in the text, an example of the operation for adjusting the preload of the spring element 65 is explained in more detail.

[0166] In Fig. 2, a setting corresponding to the minimum pre-adjusted preload of the spring element 65 is shown. Accordingly, the guide element 78.2 of the engaging lever 78 is located in the area of ​​the first locking section 14.11 of the guide path 14.

[0167] To increase the preload, the user can now act on the working surface 70.3 of the adjustment lever 70 in substantially the first adjustment direction S1. This causes the adjustment lever 70 to rotate. Via the transmission element 76 of the support element 75 and the counter transmission element 72 of the adjustment lever 70, the rotation of the adjustment lever 70 is converted into adjustment of the support element 75. Accordingly, the support element 75 can move in the first adjustment direction S1.

[0168] Therefore, the guide element 78.2 also initially moves along the first adjustment direction S1 until it reaches the first deflecting section 14.12. Here, it deflects toward the first intermediate locking section 14.13. When the guide element 78.2 reaches the zone of the first intermediate locking section 14.13, it is held therein relative to the first adjustment direction S1. Thus, the user encounters a resistance that prevents further adjustment of the adjustment lever 70 in the first adjustment direction S1. When the user now completes applying force to the working surface 70.3, the guide element 78.2 can move into the second locking section 14.14 under the action of the force of the spring element 65. Thus, the preload of the spring element 65 can increase by one step compared to the situation shown in Fig. 2.Consequently, the user receives such tactile feedback that a higher level of preload is achieved.

[0169] In a comparable manner, an additional level of increased preload can be achieved by the user again acting on the working surface 70.3 of the adjusting lever 70. Accordingly, the guide element 78.2 can now move from the second locking section 14.14 through the second deflecting section 14.15 and the third deflecting section 14.16 into the second intermediate locking section 14.17. From the second intermediate locking section 14.17, the guide element 78.2 again moves to the third locking section 14.18 when the user stops applying force to the working surface 70.3. The third stage of the adjustable preload of the spring element 65 is thereby achieved.

[0170] From the third locking section 14.18, the guide member 78.2 can shift into the range of the fourth deflecting section 14.21 when an additional force is applied to the working surface 70.3. The guide member 78.2 thereby enters the return section 14.2. Along the return section 14.2, the guide member 78.2 can initially move in the second adjustment direction S2 when the pre-tension of the spring member 65 decreases. In the fifth deflecting section 14.23, the guide member 78.2 can now return to the first locking section 14.11. Thus, the first stage of the adjustable pre-tension, as shown in Fig. 2, is achieved again.

[0171] The following text explains in more detail the possible assembly procedure for device 1.

[0172] For example, the return spring 99 can first be connected to the spring support 16.4. Here, the first leg 99.1 is inserted into the spring holder 16.5. The second leg 99.2 can initially remain free. In the trigger member 90, the damper can be inserted into the damper seat 91.1. Now, the trigger member 90 can be inserted into the trigger seat 16. Here, the second leg 99.2 of the return spring 99 can first be inserted into the support zone 92.1 of the trigger member 90. When the trigger member 90 is inserted into the trigger seat 16, the return spring 99 is also fixedly held.

[0173] Additionally, the spring carriage 60 can be inserted into the spring carriage guide 13. Here, the latch hooks 13.1, 13.2 can engage with the guide crossbars 64.1. Further, the spring element 65 can be inserted on one side into the spring support 63 of the spring carriage 60.

[0174] It is then possible to pre-assemble the supporting element 75. Here, the supporting extension 78.1 of the engaging lever of the engaging lever 78 can be connected to the supporting support 77.1 of the engaging lever of the supporting element 75. The pre-assembled supporting element 75 can then be inserted into the guide 15 of the supporting element. Preferably, the guide element 78.2 is inserted here into the first locking section 14.11 of the guide path 14.

[0175] Now the adjusting lever 70 with the socket 71.2 for the supporting support of the lever can be placed on the supporting projection 71.1 of the lever of the casing 9. Here, the mating transmission element 7 2 of the adjusting lever 70 can be placed on the transmission element 76 of the supporting element 75.

[0176] The spring element 65 can now be inserted into the spring mounting 73 of the support element 75.

[0177] In the next step, it is possible to pre-assemble the carriage 30 with the pusher 50 and the pivot arm 40. The deflection roller 45.1 can first be mounted on the pivot arm 40. In addition, the damper 47.2 can be inserted into the damper socket 47.1. The pivot arm 40 can then be mounted with the bearing zone 41 of the pivot arm on the bearing device 37.1 of the carriage 30 pivot arm.

[0178] The pusher 50 may first be provided with a spring 55. For this purpose, the spring 55 may first be seated with the second end 55.2 of the spring on the pin 54.1. Then, the first end 55.1 of the spring may be supported on the spring support 53. Finally, the pusher 50 may be inserted into the socket 36 for the pusher of the carriage 30. Advantageously, the pusher 50 may be latched using the latching elements 56 onto the corresponding latching elements 36.2 of the socket 36 for the pusher.

[0179] Now the carriage 30 can be inserted with its projections 32.1, 32.2, 32.3 into the guide sockets 11.1, 11.2, 11.3, 11.4. Here, the clamping device 38 of the carriage 30 can also engage with the transfer device 62 of the spring carriage 60. If necessary, the spring carriage 60 may have to be moved slightly forward under the pre-tension of the spring element 65.

[0180] The rotary lever 40 may be in an outwardly rotated position when the carriage 30 is inserted. Thus, the guide member 42 can be inserted into the retraction section 12.5 or the second locking section 12.4. Finally, the plug 19 can be inserted.

[0181] It is now possible to insert the latch 80 into the latch socket 28 in an additional step. For this purpose, the retaining projections 86.2 can first engage with the sockets 28.2 for the latch support. Then, the bias projections 86.3 can engage with the bias receivers 28.3.

[0182] If a device 1 having a first synchronizing element 101 and a trigger element 90, and a second device 1' having a second synchronizing element 105 and, preferably, a second trigger element 90' are provided, additional assembly steps may differ between the first and second devices 1.

[0183] The first device 1 can now be completed by bringing the first half 10 of the casing into connection with the second half 20 of the casing. Preferably, latching elements are provided on the first half 10 of the casing and the second half 20 of the casing for this purpose.

[0184] The first synchronizing element 101 can be inserted into the shaft opening 17 of the first device 1 at a subsequent stage. For this purpose, the first synchronizing element 101 is inserted in such a way that the transmission element 102 is in such an orientation that it can engage with the second mating transmission element 96.

[0185] Preferably, the second synchronizing element 105 can be inserted into the second device 1' before the first half 10 of the casing and the second half 20 of the casing are connected. The retaining section 108 is retained in the retaining shoulder 17.2 of the opening 17 for the shaft of the second device 1'. The transmission element 106 of the second synchronizing element 105 is engaged with the first mating transmission element 95 of the second trigger element 90'. Now it is possible to complete the assembly of the second device 1' by connecting the first half 10 of the casing to the second half 20 of the casing.

[0186] The first device 1 and the second device 1' can now be mounted opposite each other on the movable part of the furniture or the furniture body. If synchronization is provided between the devices 1, 1', the first synchronizing element 101 can now first be inserted with the profile section 104 into the mating profile section 112.2 of the connecting part 110. The adapter 113 can be inserted with the profile section 114 into the opposite mating profile section 111.2 of the connecting part 110. Then, the first synchronizing element 101 can be inserted into the opening 17 for the shaft of the first device 1 in the manner described above.

[0187] Now, the adapter 113 with the connecting section 115 can engage with the connecting section 109 of the second synchronizing element 105 of the second device 1'. Advantageously, the connecting socket 115.1 is thereby located on the connecting section 109, in a direction that is substantially perpendicular to the longitudinal axis of the second synchronizing element 105. Therefore, the connecting portion 115 of the adapter 113 can pass through the recess 17.3 of the hole 17 for the shaft.

[0188] As shown above, a system is provided with two devices 1, 1' for extending a movable piece of furniture. Devices 1, 1' comprise a release element 90, 90', movable between a locking position and a releasing position. Shifting the release elements 90, 90' to the releasing position releases the corresponding device 1, 1' from the retracted position. The trigger elements 90, 90' of the devices 1, 1' are connected to each other via the synchronizing shaft 100. The displacement of at least one of the trigger elements 90, 90' is transmitted to rotation of the synchronizing shaft 100. The synchronizing shaft 100 contains a first synchronizing element 101 and a second synchronizing element 105. At least one of said synchronizing elements 102, 105 contains at least one transmission element 101, 106. At least one of the trigger elements 90, 90' contains at least one mating transmission element 95, 96.The transmission elements 101, 106 and the mating transmission elements 95, 96 convert the rotation of the synchronizing shaft 100 and the displacement of the trigger elements 90. The first synchronizing element 101 and the second synchronizing element 105 are indirectly or directly, separably and rotationally rigidly connected to each other by connecting at least one connecting portion 115 to at least one connecting section 109.

Claims

1. A system for extending a movable part of furniture, comprising two devices (1, 1') for extending a movable part of furniture, wherein each of the devices (1, 1') comprises a trigger element (90, 90') movable between a locking position and a releasing position, wherein the displacement of the trigger elements (90, 90') to the releasing position releases the corresponding device (1, 1') from the retracted position, wherein the trigger elements (90, 90') of the devices (1, 1') are connected to each other via a synchronizing shaft (100), wherein the displacement of at least one of the trigger elements (90, 90') is transmitted to the rotation of the synchronizing shaft (100), wherein the synchronizing shaft (100) comprises a first synchronizing element (101) and a second synchronizing element (105), wherein at least one of said synchronizing elements (101, 105) comprises at least one transmission element (102, 106), wherein at least one of the trigger elements (90, 90') comprises,at least one mating transmission element (95, 96) and wherein the transmission element(s) (102, 106) and the mating transmission element(s) (95, 96) convert between rotation of the synchronizing shaft (100) and displacement of the trigger element(s) (90), characterized in that the first synchronizing element (101) and the second synchronizing element (105), indirectly or directly, separably and rotatably, are rigidly connected to each other by connecting at least one connecting portion (115) to at least one connecting section (109), wherein the synchronizing shaft (100) comprises a connecting part (110), the connecting part (110) comprises end regions (111, 112) at each of the ends, wherein the connecting part (110) comprises a mating profile section (111.2, 112.2) in at least one of its end regions (111, 112), at least one of the synchronizing elements (101, 105), at one end,comprises a profile section (104, 114), a rotatably secured connection is configured to be installed by connecting the profile section (104, 114) to one of the mating profile sections (111.2, 112.2) of the connecting part (110), the connecting portion (115) is provided on the adapter (113), the adapter (113) comprises a profile section (114) located opposite the connecting portion (115)., 2. The system according to claim 1, characterized in that at least one of the trigger elements (90, 90') is at least predominantly linearly movable relative to the casing (9) of the corresponding device (1, 1').

3. The system according to claim 1 or 2, characterized in that the connection of at least one connecting portion (115) with at least one connecting section (109) is a positive connection in the circumferential direction relative to the central longitudinal axis of the synchronizing shaft (100), and / or in that the connection of at least one connecting portion (115) with at least one connecting section (109) is a connection that is separable in the direction perpendicular to the central longitudinal axis of the synchronizing shaft (100), and / or in that the connection of at least one connecting portion (115) with at least one connecting section (109) is a connection that is separable along the central longitudinal axis of the synchronizing shaft (100).

4. The system according to claim 3, characterized in that the connection of at least one connecting section (115) with at least one connecting section (109) is a polygonal positive connection.

5. The system according to any one of paragraphs 1-4, characterized in that the connecting section (115) comprises a connecting socket (115.1), in which the connecting section (109) is designed with the possibility of being at least partially received, and the connecting socket (115.1) comprises an opening in the radial direction relative to the central longitudinal axis of the synchronizing shaft (100).

6. The system according to any one of claims 1 to 5, characterized in that the connecting section (109) comprises a polygonal cross-section, wherein the connecting socket (115.1) of the connecting portion (115) is formed at least partially according to the cross-section of the connecting portion (109), wherein the connecting socket (115.1) comprises at least one corresponding latching element (115.2) of at least partially corresponding shape.

7. The system according to any one of paragraphs 1-6, characterized in that the connecting section (109) comprises at least two surface zones parallel to the central longitudinal axis of the synchronizing shaft (100), wherein at least two of the surface zones are parallel to each other, and the connecting section (109) comprises at least one latching element (109.1).

8. A system according to any one of paragraphs 1-7, characterized in that at least one mating profile section (111.2, 112.2) is made in the form of a recess.

9. The system according to paragraphs 1-8, characterized in that the connection between the profile section (104, 114) with one of the mating profile sections (111.2, 112.2) is detachable.

10. The system according to paragraphs. 1-9, characterized in that the connection of the profile section (104) of at least one synchronizing element (101, 105) and / or the profile section (114) of the adapter (113) with one of the mating profile sections (111.2, 112.2) is a positive connection in the peripheral direction relative to the central longitudinal axis of the synchronizing shaft (100), and / or in that the connection of one profile section (104) of at least one synchronizing element (101, 105) and / or the profile section (114) of the adapter (113) with one of the mating profile sections (111.2, 112.2) is a connection that is separable along the central longitudinal axis of the synchronizing shaft (100).

11. The system according to claim 10, characterized in that the connection is a polygonal connection with frictional closure.

12. The system according to any one of paragraphs. 1-11, characterized in that the profile section (104) of at least one synchronizing element (101, 105) and / or the profile section (114) of the adapter (113) comprise a polygonal cross-section, wherein at least one mating profile section (111.2, 112.2) of the connecting part (110) is made in the form of a recess, at least partially corresponding to the profile section (104) of at least one synchronizing element (101, 105) and / or the profile section (114) of the adapter (113).

13. The system according to claim 12, characterized in that the profile section (104) comprises an I-shaped, T-shaped or L-shaped cross-section, and at least one latching element (104.1, 114.1) is provided in the region of at least one of the profile sections (104, 114), wherein at least one latching element (104.1, 114.1) is elastically stretchable in the direction of the central longitudinal axis of the synchronizing shaft (100).

14. The system according to any one of paragraphs. 1-13, characterized in that each of the devices (1, 1') comprises a casing (9), wherein each of the casings (9) comprises an opening (17) for a shaft, each of the openings (17) for a shaft provides, at least in areas, a connection with the corresponding internal space of the casings (9) in the direction of the central longitudinal axis of the synchronizing shaft (100), wherein the synchronizing elements (101, 105) are, at least partially, received in the corresponding opening (17) for the shaft.

15. The system according to claim 14, characterized in that the opening (17) for the shaft of the casing (9) of at least one of the devices (1, 1') contains a recess (17.3), wherein the recess (17.3), at least in areas, ensures connection with the corresponding internal space of the casing (9) in a direction perpendicular to the central longitudinal axis of the synchronizing shaft (100).

16. The system according to claim 15, characterized in that the recess (17.3) ensures accessibility of at least parts of the connecting section (109), at least one synchronizing element (101, 105) located in the opening (17) for the shaft.

17. The system according to claim 14 or 15, characterized in that at least one of the synchronizing elements (101, 105) contains a thrust section (103, 107), and the opening (17) for the shaft of at least one of the devices (1, 1') contains a neck (17.1), at least one synchronizing element (101, 105), with the help of its thrust section (103, 107), rests at least partially against the neck (17.1).

18. The system according to claim 17, characterized in that the thrust section (103, 107) is formed in the form of a shaft shoulder.

19. The system according to claim 17, characterized in that at least one of the synchronizing elements (101, 105) further comprises a retaining section (108), wherein the opening (17) for the shaft of at least one of the devices (1, 1') further comprises a retaining shoulder (17.2), at least one synchronizing element (101, 105) is retained by means of a thrust section (103, 107) on the neck (17.1) and by means of a retaining section (108) on a retaining shoulder (17.2) in both directions along its central longitudinal axis.

20. The system according to claim 19, characterized in that the holding section (108) is formed in the form of a shaft shoulder.

21. The system according to any one of paragraphs. 1-20, characterized in that at least one of the transmission elements (102, 106) is made in the form of a protrusion that extends at least in areas along the central longitudinal axis of the synchronizing shaft (100), which is limited in the peripheral direction and protrudes in the radial direction, and at least one of the mating transmission elements (95, 96) is made in the form of a recess corresponding to at least one transmission element (102, 106).

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