Abstract
an axial-radial sliding bearing (1) includes a first bearing ring (2) and a second bearing ring (4), the bearing rings being rotatable in relation to one another about a bearing axis A, and the second bearing ring (4) forming a substantially U-shaped cross-section in order to accommodate at least portions of the first bearing ring; and sliding elements (6) which are made of a polymer material and are arranged between the first and the second bearing ring in order to axially and radially decouple the bearing rings, the sliding elements (6) each having a substantially L-shaped cross-section with an axial region including axial sliding faces, and a radial region including radial sliding faces. At least one of the two bearing rings has a seat (7) for a detent element (8) which is accommodated therein, is force-loaded and deflectable, and the other of the two bearing rings has at least one detent recess (9) associated with the detent element for accommodating at least portions of the deflectable detent element (8) so as to provide a releasable locking action at a specified relative rotational position of the two bearing rings (2, 4) in relation to one another.
Claims
1. An axial-radial sliding bearing (1) comprising a first bearing ring (2); a second bearing ring (4), the bearing rings being arranged rotatably against each other about a bearing axis (A), and the second bearing ring (4) forming a substantially U-shaped cross-section to accommodate the first bearing ring (2) at least in sections; and, sliding elements (6) made of a polymer material, which are arranged between the first and second bearing rings in order to decouple the bearing rings axially and radially, the sliding elements (6) each having a substantially L-shaped cross-section with an axial region comprising axial sliding surfaces and a radial region comprising radial sliding surfaces, and wherein at least one of the two bearing rings has a seat (7) for a force-loaded and deflectable detent element (8) accommodated therein, and the other of the two bearing rings comprises at least one detent recess (9) associated with the detent element for accommodating the deflectable detent element (8) at least in sections in order to provide a releasable locking action at a specified relative rotational position of the two bearing rings (2, 4) to each other, wherein i) the axial-radial sliding bearing (1) is configured in such a way that a releasing torque for releasing the locking of the two bearing rings (2, 4) to each other by applying a predetermined torque to one of the two bearing rings (2, 4) can be generated, while the other of the two bearing rings (2, 4) is held stationary, said predetermined torque representing a torque threshold from which the locking is releasable, and/or ii) the first bearing ring (2) is accommodated by the second bearing ring (4) over its entire axial extent and over a section of its radial extent, the detent element (8) and the detent recess (9) being arranged on mutually facing interfaces of the two bearing rings (2, 4).
2. The axial-radial sliding bearing (1) according to claim 1, wherein the detent element (8) and the at least one detent recess (9) associated therewith are arranged on respective mutually facing radial surfaces (21b, 45) of the one and the other bearing ring and in that the detent element (8) arranged in the seat (7) of the one bearing ring is subjected to force in the radial direction and can be deflected.
3. The axial-radial sliding bearing (1) according to claim 1, wherein the detent element (8) has, at least in sections, a spherical or cylindrical detent surface which in a detent position of the detent element (8) relative to the at least one detent recess (9) corresponds with a detent surface of the detent recess which is of complementary design, at least in sections.
4. The axial-radial sliding bearing (1) according to claim 1, wherein the second bearing ring (4) has two axially spaced ring sections (41a, b) which are connected by an axial flange (42), the first bearing ring (2) being arranged between the two axially spaced ring sections (41a, b) of the second bearing ring (4), at least in sections.
5. The axial-radial sliding bearing (1) according to claim 1, wherein the detent element (8) is formed in one or more pieces and extends over more than half of the axial dimension of the bearing ring with the smaller axial extent.
6. The axial-radial plain bearing (1) according to claim 1, wherein a spring (80) is provided for providing a force application to the detent element (8), which spring (80) is arranged in a bore (22) of one of the two bearing rings and is clamped between the detent element (8) and a radial stop element.
7. The axial-radial sliding bearing (1) according to claim 1, wherein the other of the two bearing rings has a plurality of circumferentially spaced detent recesses (9) for successively receiving the detent element (8) at a rotation of the two bearing rings (2, 4) to each another.
8. The axial-radial sliding bearing (1) according to claim 1, wherein the seat (7) for the detent element (8) on the one of the two bearing rings is designed for substantially, completely accommodating the detent element in relative operating positions of the two bearing rings (2, 4) to each another outside a detent position.
9. The axial-radial sliding bearing (1) according to claim 1, wherein the at least one detent recess (9) is arranged on the second bearing ring (4) and the seat (7) of the detent element is arranged on the first bearing ring (2).
10. The axial-radial sliding bearing (1) according to claim 1, wherein an actuating device (90) is arranged on one of the two bearing rings, the actuating device having an actuating section (92) which can be moved with respect to this bearing ring (2) and is operatively connected to the detent element (8).
11. The axial-radial sliding bearing (1) according to claim 10, wherein the actuating device (90) is arranged and designed to exert, via the actuating section (92), a counteracting force on the detent element (8) for subjecting the detent element to a force for releasing the locking of the detent element (8) from the at least one detent recess (9).
12. The axial-radial sliding bearing (1) according to claim 10, wherein the actuating section (92) of the actuating device is arranged to be radially deflectable relative to the one of the two bearing rings.
13. The axial-radial sliding bearing (1) according to claim 10, wherein the detent element (8) and the actuating section (92) are in operative connection via a force-transmitting element or section of the actuating device (90).
14. The axial-radial sliding bearing (1) according to claim 10 wherein the actuating device (90) is arranged and designed for locking an operating position in which a locking of the detent element (8) in the at least one detent recess (9) is released.
15. The axial-radial sliding bearing (1) according to claim 14, wherein, the actuating section (92) is arranged for a forcibly guided movement in the radial direction relative to one of the two bearing rings (2, 4) over a predetermined distance threshold to release the locking starting from a locking position of the detent element (8), and is arranged for rotation about a radial direction after exceeding the distance threshold to set a radial positive locking between the actuating section (92) and said one of the two bearing rings (2).
16. The axial-radial sliding bearing (1) according to claim 1, wherein a material thinning in the manner of a film hinge (65) is provided between the radial and axial sliding surfaces of the respective sliding elements (6) for bending the radial to the axial sliding surfaces of a sliding element (6) by approximately 90?.
17. The axial-radial sliding bearing (1) according to claim 1, wherein a sliding element (6) comprises in the region of its axial sliding surfaces a plurality of first sectors (60) arranged essentially without gaps and succeeding each other circumferentially, while the sliding element (6) comprises in the region of its radial sliding surfaces a plurality of second sectors (64) arranged spaced from each circumferentially and succeeding each other circumferentially.
18. The axial-radial sliding bearing (1) according to claim 1, wherein at least two sliding elements (6) are comprised which in the installed position are axially offset with respect to their axial sliding surface by approximately the axial dimension of the first bearing ring (2) and, in particular, are circumferentially offset with respect to each other by approximately half the circumferential dimension of the first sectors (60).
19. The axial-radial sliding bearing (1) according to claim 1, wherein the actuating device has a controllable actuator for non-manually adjusting and/or releasing the engagement of the detent element in the at least one detent recess.
20. The axial-radial sliding bearing (1) according to claim 10, wherein the actuating section has a mechanical coupling device.
21. The axial-radial sliding bearing (1) according to claim 1, further comprising a monitoring device for detecting locking and/or non-locking states of the axial-radial sliding bearing (1).
Description
[0040] The invention is explained below by describing an embodiment together with variations with reference to the accompanying drawings, wherein
[0041] FIG. 1 is a perspective view of an axial-radial sliding bearing designed according to the invention,
[0042] FIG. 2 shows a longitudinal section of the sliding bearing according to the invention shown in FIG. 1,
[0043] FIG. 3 shows the bearing according to the invention of FIG. 1 in a top view with a partial removal of the second bearing ring,
[0044] FIG. 4 shows the second bearing ring of the sliding bearing according to the invention of FIG. 1 in a perspective single view,
[0045] FIG. 5 shows the first bearing ring of the sliding bearing according to the invention of FIG. 1 in a perspective single view,
[0046] FIG. 6 is a partial view of the sliding elements of the sliding bearing according to the invention of FIG. 1 in a perspective view,
[0047] FIG. 7 is a perspective view of an axial-radial sliding bearing of a second embodiment designed according to the invention,
[0048] FIG. 8 shows a sectional view of the axial-radial sliding bearing shown in FIG. 7 to illustrate an actuating element,
[0049] FIG. 9 shows an exploded view of components of the actuating element,
[0050] FIG. 10 is a perspective exploded view of an axial-radial sliding bearing of a third embodiment designed according to the invention,
[0051] FIG. 11 is a perspective exploded view of an axial-radial sliding bearing of a fourth embodiment designed according to the invention, and
[0052] FIG. 12 is a perspective exploded view of an axial-radial sliding bearing of a fifth embodiment designed according to the invention.
[0053] In FIG. 1, an axial-radial sliding bearing 1 according to the invention is shown in a perspective view. The bearing 1 has a first or inner bearing ring 2 that is arranged coaxially with a second or outer bearing ring 4 and is received by the latter over its entire axial extent and over a section of its radial extent. For this purpose, the second bearing ring 4 is approximately U-shaped in a section that encompasses the longitudinal axis of the sliding bearing. Both bearing rings 2, 4 can be formed from a same or different metal material such as aluminum or steel. However, it is also possible to form at least one of the bearing rings or both of them from a plastic material, in particular at least in sections.
[0054] In the embodiment shown, the first bearing ring 2 is formed in one piece in the manner of a hollow cylinder with a low overall height, while the second bearing ring 4 is composed of two ring sections 41 a, b that are axially spaced and connected by means of an axial flange 42 to form the described ring with a U-shaped cross section. L-shaped sliding elements 6 are provided between mutually facing radial and axial surfaces of the two bearing rings 2, 4 for decoupling or removing the friction between the bearing rings at the mutually facing axial and radial surfaces. The dimensions of the axial height of the first bearing ring, including the thickness of the sliding elements 6, are adapted to the axial spacing of the ring sections 41 a, b of the second bearing ring or its receptacle in such a way that the two bearing rings 2, 4 are arranged so as to be rotatable to each other essentially without play or with a small gap dimension about the axis A of the sliding bearing. Depending on the application, the axial-radial sliding bearing according to the invention can be used in such a way that the first bearing ring or the second bearing ring is arranged in a stationary manner, while the respective other bearing ring is rotatable relative to the first-mentioned.
[0055] FIG. 2 shows the axial-radial sliding bearing of FIG. 1 in a sectional view, the sectional plane comprising the bearing axis A. As can be seen, in the embodiment described, the second bearing ring 4 is formed by an L-shaped ring 43 which provides a ring section 41b and an axial flange 42, to the free end of which a ring 44 is attached, so that the radial surface 45 and the two axial surfaces 40 a, b of the L-shaped ring 43 or of the ring 44 form a receptacle for the first bearing ring 2. As can be seen, the axial surfaces 20 a, b of the first bearing ring face the axial surfaces 40 a, b of the second bearing ring, and in a corresponding manner the radial surface 45 of the second bearing ring and the radial surface 21 b of the first bearing ring face each other, with sliding elements 6 being arranged therebetween with corresponding sector sections parallel to the indicated axial and radial surfaces of the two bearing rings, in order to enable the two bearing rings to rotate against each other with as little friction as possible.
[0056] FIG. 3 shows the axial-radial sliding bearing 1 designed according to the invention in a frontal plan view, in which the ring 44 screwed to the L-shaped ring 43 to form the second bearing ring 4 has been removed. In this respect, FIG. 3 shows a frontal view of the axial surface 20a of the first bearing ring 2 on which a plurality of sliding element sectors 60 are arranged in the axial overlap region of the first bearing ring 2 with the second bearing ring 4 to provide axial sliding surfaces. For adjusting the respective curvature, the sliding element sectors 60 extending circumferentially and radially are formed in a trapezoidal shape so that a slot 61 is located between adjacent sectors. The sliding element sectors 60 completely cover the radially inner section of the axial surface 20a except for an angular section in which a seat 7 for a detent element 8 is arranged in the first bearing ring 2. In the embodiment described, the locking of the two bearing rings arranged rotatably to each other takes place on the respective mutually facing radial surfaces of the two bearing rings 2, 4. In this case, the detent element is designed here as a cylindrical pin which is arranged under spring load in an approximately rectangular recess adapted to the diameter of the detent element. In this respect, this recess acts as a seat 7 for the detent element 8, the relative position of the detent element within the seat depending on the respective relative rotational state of the two bearing rings 2, 4 with respect to each other. As shown, the seat has a substantially cuboid shape or recess, wherein the bottom portion, i.e. the radial boundary portion, may be curved, in particular adapted to the curvature of the detent element 8.
[0057] In the embodiment described, the detent element 8 is subjected to force in the radial direction by means of a spring element 80, here in the form of a spiral spring, the spring element being supported on a fastening element, for example a radially arranged screw 81, see FIG. 1. The relative rotational position of the two bearing rings 2, 4 indicated in FIG. 3 results in a locking action of the two bearing rings to each other, since in the indicated relative rotational position the detent element 8 is pressed into a detent recess 9 associated therewith due to the application of force, so that the free rotatability of the bearing rings to each other is blocked. It can be seen that the radial surface 45 of the axial flange 42 has four detent recesses 9 spaced circumferentially by 90? and adapted to the cylindrical shape of the detent element 8, so that during a full rotation the four detent positions defined as described can be approached in a defined manner.
[0058] As shown, in the region of the seat 7 for the detent element 8 on the axial surface 20a, no sliding element sector of one of the described sliding elements for providing a corresponding axial sliding surface section in trapezoidal form is provided, but instead two additional sliding elements 5 are provided, which are rod-shaped in this case and which each extend with their front face out of their associated axially extending bore in the first bearing ring and flush with the sliding element sectors 60 of the sliding elements 6.
[0059] FIG. 4 shows the second bearing ring in a perspective oblique view of the radial surface 45 as well as one of the detent recesses 9, which in the described embodiment extends over the entire axial spacing between the two ring sections 41a, b and is thus adapted to the axial length of the detent element 8. The four detent positions provided in the described embodiment of the axial-radial sliding bearing according to the invention correspond to four relative rotational positions of the two bearing rings 2, 4 to each other and can be resolved by applying a torque above a predetermined threshold, the resolution here being set symmetrically, i.e., independently of the direction of rotation, due to a symmetrical design of the detent surfaces of the detent element and the associated detent recess or recesses.
[0060] FIG. 5 shows an oblique view of the first bearing ring 2 of the axial-radial sliding bearing 1 according to the invention in a single view. There can be seen the radially inner radial surface 21b facing the radial surface 45 of the second bearing ring, on which radial surface 21b the seat 7 is formed as a recess adapted to the detent element 8. A radial bore 22, starting from the outer radial surface 21a, penetrates through the seat approximately axially centrally and receives the spring element 80 and the support screw 81 in the assembled state. As shown in FIG. 4, the seat extends axially over the entire thickness of the first bearing ring 2.
[0061] FIG. 6 shows in a cut-out and in a single representation sliding elements 6 for the design of the axial-radial sliding bearing 1 according to the invention. In the embodiment described, two rows of identically constructed sliding elements 6 are used, in which case a single sliding element provides an axial sliding element sector 60 and a radial sliding element sector 64. In the embodiment described, the axial sliding element sectors are trapezoidal in shape, with both sectors 60, 64 being arranged at an angle of approximately 90? to each other to form an approximately L-shaped sliding element. For this purpose, each sliding element 6 has a film hinge 65 that can be formed by thinning the material in this area. In this case, in this embodiment, a first row of sliding elements 6 is arranged circumferentially in succession in the region of the radial inner section of the first bearing ring 2, so that the axial surface 20a can be occupied by the axial sliding element sectors 60 and the inner radial surface 21b can be occupied by the radial sliding element sectors 64 of the sliding elements 60, see FIG. 5. In addition to this first row of sliding elements, a further row of sliding elements 6 with sliding element sectors 60 is arranged in the same manner on the axial surface 20b of the first bearing ring 2 which is located at the bottom in FIG. 5, the corresponding radial sliding element sectors 64 in turn bearing against the inner radial surface 21b of the first bearing ring 2 for axial and radial decoupling of the bearing rings 2, 4 in the assembled state of all components of the axial-radial sliding bearing.
[0062] As can be seen from FIG. 6, the arrangement may be such that the radial sliding element sectors 64 of the two rows of sliding elements abut end-to-end such that twice the dimension of the sliding element sectors 64 in the radial direction is substantially equal to the thickness of the first bearing ring 2. As can be seen, the sliding element sectors 64 of the sliding elements are formed in such a way that by an offset of both rows of sliding elements by half the circumferential extent of a sliding element in the region of the film hinge 65, the sliding element sectors 64 engage each other such that the inner radial surface 21 of the inner bearing ring 2 is substantially completely covered by the sliding element sectors 64 and such that in this embodiment the axial thickness of the first bearing ring 2 substantially corresponds to the axial extent of a sliding element sector 64 in the axial direction in the installed position.
[0063] In a further embodiment, which is not illustrated, it may be provided that all sliding elements of the two circumferential rows of sliding elements indicated in FIG. 6 are connected to each other, in particular in the region of the film hinges 65. Such a link chain of sliding elements can also be produced in a simple manner, for example, by an injection molding process.
[0064] The skilled person will recognize that other geometrical designs of the sliding element sectors 60, 64 are also possible, depending on the respective application or on the operating forces that occur.
[0065] With reference to FIGS. 7 to 9, a second embodiment of an axial-radial sliding bearing 1 according to the invention is described below, wherein FIG. 7 shows the sliding bearing 1 in a perspective view which, with respect to the design and relative arrangement of the first and second bearing rings and the sliding elements arranged therebetween and with respect to further details such as the basic design and arrangement of the detent element and the at least one detent recess associated therewith, are identically designed to the embodiment described with reference to FIGS. 1-6. For this reason, only the differences of these second embodiments will be discussed below with reference to the Figures.
[0066] The sliding bearing 1 of FIG. 7 has an actuating element 91 as part of an actuating device 90, which actuating element in the embodiment described comprises an actuating section 92 that is operatively connected, here motion-coupled, to a detent element or detent section 8, see FIG. 8, in which the axial-radial sliding bearing 1 of FIG. 7 according to the invention is shown in a sectional view perpendicular to the axis and with view to the cut-free actuating element 92. This sectional view also shows the detent recesses 9 arranged on the axial flange 42 of the second bearing ring 4, which in this embodiment may be of identical design to the detent recesses 9 of the embodiment described with reference to FIGS. 1 to 6. In this case, the same extends over the entire axial extent of the axial flange 42. In an embodiment not shown, these detent recesses 9 can also be cylindrical in shape and in this respect do not extend over the entire axial extent of the axial flange 42, so that in this embodiment the recesses can be designed to be axially closed. As shown in FIG. 8, the actuating element 91 can have, in addition to the actuating section 92, a detent element 8 which is arranged here integrally with the latter and can be designed in this embodiment as a pin-like cylinder whose circumferential extent is adapted to the circumferential extent of the associated detent recesses 9, in order to avoid circumferential play between the first and second bearing rings (2, 4) after the locking has been set. It can be seen that the seat 7 associated with the detent element 8 is essentially formed as a radial passage in the first bearing ring 2, in which passage a fastening sleeve 95 of the actuating element 91 is arranged, see FIG. 9, which is an exploded view of the actuating device 90. In addition to the fastening sleeve 95, the actuating device 90 has an actuating element 91 which is of elongated design here and has the detent element 8 at a first end and an actuating section 92 at the opposite end, both end sections of the actuating element being rigidly connected to each other by a connecting section 93.
[0067] In the assembled state, the actuating element 91 extends through the fastening sleeve 95 and is supported with respect to the latter by means of a spring (not shown) in such a way that the actuating element 91 and thus its detent element or detent section 8 is subjected to force radially inwards relative to the two bearing rings, so that in a predetermined rotational position of the two bearing rings to each other, in which the detent element 8 of the actuating element 91 is situated radially opposite one of the detent recesses 9, the actuating element 91 with its detent element or detent element section 8 comes into engagement with the respective detent recess 9.
[0068] A detent release, i.e., a disengagement of the detent section of the actuating element 91 with a respective detent recess 9, takes place by pulling the actuating section 92 radially outward. In order to avoid the actuating element 91 having to be permanently pulled outwards when setting a further assembly position or a further relative position of the two bearing rings to each other, the actuating device 90 has a functionality for locking an operating position in which locking exists between the detent element and one of the detent recesses. For this purpose, in the embodiment described, the fastening sleeve 95 has a guide slot 96 extending radially to the bearing rings, which guide slot 96 cooperates with a radial projection in the region of the actuating section 92, which projection is concealed in FIG. 9, for radially forced guidance of the actuating element 91 with respect to the fastening sleeve 95. In such an operating position, in which the actuating element 91 and/or the projection guided by the guide slot 96 disengages from the guide slot 96, the actuating element 91 is arranged for rotation relative to the stationary fastening sleeve 95, so that the guide pin arranged on the actuating element 91 becomes radially positively locked with the front wall 97 of the fastening sleeve 95, so that the actuating device 90 is locked. This locking can be released by turning the actuating element back to the initial position, in which the radial positive locking is released and the guide pin engages with the guide slot 97 again, so that the actuating element is pressed radially inwards onto the detent element 8 and thus onto the actuating element as a result of the spring force load as long as no force counteracting the spring force load is introduced into the system via the actuating section 92.
[0069] The following FIGS. 10 to 13 show different axial-radial sliding bearings 1, which do not differ from the embodiment of the FIGS. 7 and 8 with respect to the design and arrangement of the first bearing ring 2, the second bearing ring 4 and the sliding elements 6 as well as the seat 7, but solely with respect to the design of the actuating device 100, 110, 120, which will be discussed below.
[0070] In the embodiment of FIG. 10, the actuating device 100 comprises a rod-shaped housing 101 which is designed as a threaded sleeve 102 at its front side end facing the detent element 8, via which sleeve the actuating device 100 can be screwed into the threaded bore 22 of the first bearing ring 2. In this embodiment, the detent element 8 is connected to an actuating section (not illustrated in the Figure), which can be actuated in particular manually, via a pulling means designed as a Bowden cable 105. For example, an actuating section of the actuating device arranged remotely from the actual sliding bearing comprising the two bearing rings can be provided, such as an actuating lever, via which a pulling force can be applied to the Bowden cable 105 in order to release a detent position between the first and second bearing rings 2, 4. For this purpose, the Bowden cable 105 is motion-coupled to the detent element 8, e.g., fixed to the latter directly or with the interposition of at least one further component.
[0071] In the embodiment of an axial-radial sliding bearing designed according to the invention as shown in FIG. 11, the actuating device 110 has on its housing a threaded sleeve 102 facing the detent element 8 with which the device 110 can be screwed into the associated threaded bore 22 of the first bearing ring 2. The detent element 8 is in turn arranged movably in a radial direction with respect to the housing of the actuating device 110 and, in the embodiment described, is rigidly connected to a coupling bolt 112 which protrudes from the front side of the housing of the actuating device 110 facing away from the detent element. In this respect, in the embodiment described, the coupling bolt 112 with the detent element 8 in an installation position is arranged so as to be movable in the radial direction with respect to the housing of the actuating device 110 or with respect to the first bearing ring. This embodiment of an axial-radial sliding bearing designed according to the invention is particularly suitable for connection to a user-specific adjusting unit not shown in FIG. 11, which can be coupled to the threaded coupling bolt 112 simply be screwing, because the adjusting unit has a complementary coupling part in the form of a female thread.
[0072] In the embodiment of FIG. 12, the actuating device 120 has an adjusting unit 122 which can be electrically actuated and which comprises, as a monitoring device, an electrical monitoring contact in which a contact surface is motion-coupled on the output side to the adjusting unit for indicating a respective locking state and/or a locking release state of the sliding bearing. In the embodiment described, the adjusting unit is in the form of an electric cylinder, the electric cylinder having a housing to which the detent element 8 is slidably arranged and which comprises a threaded sleeve 102 by which the actuating device 120 or the adjusting unit 122 can be screwed into the associated threaded bore 22 of the first bearing ring. In the described embodiment, the adjusting unit 122 is provided with an integrated energy source, such as a rechargeable battery, so that the adjusting unit does not require an external energy source. In order to control the adjusting unit and/or to transmit a detected operating state via the described monitoring contact, the actuating device 120 comprises, in addition to the adjusting unit 122, a transceiver module 124 which is galvanically and mechanically coupled to the latter and, in particular, communicates wirelessly with an external control device. For example, control signals for controlling the adjusting unit can be transmitted to the adjusting unit via the transceiver module 124, and/or detected operating states of the locking and/or non-locking between the two bearing rings 2, 4 or a number of detected changes in the operating state can be communicated to an external control device.
LIST OF REFERENCE SIGNS
[0073] 1, 1 axial-radial bearing [0074] 2, 2 first bearing ring [0075] 4, 4 second bearing ring [0076] 5 sliding element [0077] 6 sliding element [0078] 7, 7 seat [0079] 8, 8 detent element [0080] 9, 9 detent recess [0081] 20a, b axial surface [0082] 21a outer radial surface [0083] 21b inner radial surface [0084] 22, 22 bore [0085] 40a, b axial surface [0086] 41a, b ring section [0087] 42, 42 axial flange [0088] 43 L-shaped ring [0089] 44, 44 ring [0090] 45 radial surface [0091] 46 fastening screw [0092] 60 sliding element sector of axial surface; first sector [0093] 61 slot [0094] 64 sliding element sector of axial surface; second sector [0095] 65 film hinge [0096] 80 spring element, spring [0097] 81 supporting screw [0098] 90 actuating device [0099] 91 actuating element [0100] 92 actuating section [0101] 93 connecting section, force-transmitting section [0102] 95 fastening sleeve [0103] 96 guide slot [0104] 96 [0105] 97 front wall [0106] 100, 110, 120 actuating device [0107] 101 housing [0108] 102 threaded sleeve [0109] 105 Bowden cable [0110] 112 coupling bolt [0111] 122 adjusting unit with integrated monitoring contact [0112] 124 transceiver module [0113] A rotation axis
