Cleaning machine with roller housing

Abstract

A cleaning machine is provided, including at least one cleaning roller, a roller housing having a roller receptacle for the at least one cleaning roller, wherein the at least one cleaning roller is exchangeably positioned on the roller housing and the roller receptacle has an opening to the outside, a lid for closing the opening, and a locking device for fixing the lid to the roller housing, wherein at least one convex holding body is arranged on the roller housing, in that a pivotable bracket is arranged on the lid, in that at least one receptacle for the at least one holding body is arranged on the pivotable bracket, and wherein a release position of the pivotable bracket, the at least one holding body can dip into and/or exit the associated receptacle, and in a locking position, an exit of the holding body from the associated receptacle is blocked.

Claims

1. A cleaning machine, comprising: at least one cleaning roller; a roller housing having a roller receptacle for the at least one cleaning roller, wherein the at least one cleaning roller is exchangeably positioned on the roller housing and the roller receptacle has an opening to the outside; a lid for closing the opening; and a locking device for fixing the lid to the roller housing, wherein at least one convex holding body is arranged on the roller housing, wherein a pivotable bracket is arranged on the lid, wherein at least one receptacle for the at least one holding body is arranged on the pivotable bracket, wherein in a release position of the pivotable bracket, the at least one holding body is able to selectively (i) engage into the associated receptacle and (ii) be removed from the associated receptacle and wherein in a locking position of the pivotable bracket, an exit of the holding body out of the associated receptacle is blocked; wherein the at least one convex holding body is configured as a retaining ball.

2. The cleaning machine in accordance with claim 1, wherein the at least one receptacle has a receiving space for the associated holding body.

3. The cleaning machine in accordance with claim 2, wherein the receiving space has a spherical delimitation.

4. The cleaning machine in accordance with claim 2, wherein the receiving space has a first opening and a second opening, wherein the holding body is able to pass through the first opening and the holding body is not able to pass through the second opening.

5. The cleaning machine in accordance with claim 4, wherein the holding body sits on a neck, wherein in the locking position, the neck is positioned in the second opening.

6. The cleaning machine in accordance with claim 5, wherein by pivoting the pivotable bracket from the release position into the locking position when the holding body is positioned in the receiving space, the neck is positioned in the second opening.

7. The cleaning machine in accordance with claim 4, wherein the first opening and the second opening are connected to one another.

8. The cleaning machine in accordance with claim 1, wherein at least one first convex holding body and, at a distance from the first holding body, a second convex holding body are arranged on the roller housing, and in that a first receptacle for the first holding body and a second receptacle for the second holding body are arranged on the pivotable bracket.

9. The cleaning machine in accordance with claim 8, wherein a pivot bearing for a pivotability of the pivotable bracket is arranged between the first receptacle and the second receptacle.

10. The cleaning machine in accordance with claim 1, wherein in the release position, the pivotable bracket is oriented transversely to the lid.

11. The cleaning machine in accordance with claim 1, wherein in the locking position, the pivotable bracket is oriented at least approximately parallel to the lid.

12. The cleaning machine in accordance with claim 1, wherein a recess for accommodating the pivotable bracket in the locking position is arranged on the lid.

13. The cleaning machine in accordance with claim 1, wherein at least one of a dipping-in direction and an exit direction of the at least one holding body for the associated receptacle is oriented transversely to a pivot axis of the pivotable bracket.

14. The cleaning machine in accordance with claim 1, wherein a pivot angle of the pivotable bracket between the release position and the locking position is in the range between 70° and 110°.

15. The cleaning machine in accordance with claim 1, wherein the pivotable bracket has a first region at which a first receptacle is arranged, and a second region at which a second receptacle is arranged, and a third region which is located between the first region and the second region.

16. The cleaning machine in accordance with claim 15, wherein the third region is configured as an arc.

17. The cleaning machine in accordance with claim 15, wherein a pivot bearing is arranged or formed in at least one of the first region and the second region.

18. The cleaning machine in accordance with claim 1, wherein a drive motor is provided for a rotary drive of the at least one cleaning roller.

19. The cleaning machine in accordance with claim 1, wherein arranged on the lid is a bearing for the at least one cleaning roller for rotatably mounting the at least one cleaning roller.

20. The cleaning machine in accordance with claim 1, wherein when the lid is fixed to the roller housing, the lid covers the at least one holding body towards the outside.

21. The cleaning machine in accordance with claim 1, wherein the lid is completely removable from the roller housing.

22. The cleaning machine in accordance with claim 1, wherein the roller housing has an end wall associated with the roller receptacle, wherein the opening is formed on the end wall, and wherein the at least one convex holding body is arranged on the end wall.

23. The cleaning machine in accordance with claim 1, wherein at least one of the following is the case: a pivot axis of the pivotable bracket is arranged transversely to a rotational axis of the at least one cleaning roller; a pivot axis of the pivotable bracket is arranged at an acute angle to an envelope plane of the roller housing.

24. The cleaning machine in accordance with claim 1, wherein the roller receptacle has an opening towards an envelope plane.

25. The cleaning machine in accordance with claim 1, wherein a locking device is provided for releasably locking the at least one cleaning roller to the lid.

26. The cleaning machine in accordance with claim 25, wherein the locking device is configured for an axial locking between the lid and the at least one cleaning roller.

27. The cleaning machine in accordance with claim 25, wherein the locking device comprises a pin, which is arranged on the at least one cleaning roller, and has a movable slider, which is arranged on the lid, wherein when the slider is in locking engagement with the pin, an axial locking between the lid and the at least one cleaning roller is present.

28. The cleaning machine in accordance with claim 1, wherein the at least one cleaning roller is at least one of a brush roller and a textile roller.

29. The cleaning machine in accordance with claim 1, having a configuration as a floor cleaning machine.

30. The cleaning machine in accordance with claim 29, comprising at least one suction opening, which is formed on the roller receptacle.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a perspective depiction of an embodiment of a cleaning machine in accordance with the invention;

(2) FIG. 2 shows a partial side view of the cleaning machine in accordance with FIG. 1, wherein a lid is locked to a roller housing;

(3) FIG. 3 shows a sectional view along line 3-3 in accordance with FIG. 2;

(4) FIG. 4 shows as a separate element the lid of the cleaning machine in accordance with FIG. 1 in an outside view in a locking position of a bracket;

(5) FIG. 5 shows a further view of the lid in accordance with FIG. 4 from another side;

(6) FIG. 6 shows a sectional view along line 6-6 in accordance with FIG. 4, a portion of the roller housing also being shown;

(7) FIG. 7 shows the same view as FIG. 2 with a release position of the bracket;

(8) FIG. 8 shows a side view along line 8-8 in accordance with FIG. 7;

(9) FIG. 9 shows the lid for the roller housing in the release position in accordance with 7 in an outside view;

(10) FIG. 10 shows the lid in accordance with FIG. 9 in a view in the opposite direction to the view shown in FIG. 9;

(11) FIG. 11 shows a sectional view along line 11-11 in accordance with FIG. 9, a portion of the roller housing also being shown;

(12) FIG. 12 shows schematically the cleaning machine in accordance with FIG. 1 in a partial depiction with the lid released from the roller housing and the cleaning roller partially removed from a roller receptacle;

(13) FIG. 13 shows a perspective partial view of a further embodiment of a cleaning machine in accordance with the invention with a lid in a locking position on a roller housing;

(14) FIG. 14 shows a similar view as FIG. 13, a release position for the lid being shown and a cleaning roller being removed from the roller housing and the lid thereby being connected to the cleaning roller;

(15) FIG. 15 shows a plan view of the lid with the cleaning roller; and

(16) FIG. 16 shows a sectional view along line 16-16 in accordance with FIG. 15.

(17) An embodiment of a cleaning machine 10 in accordance with the invention is a brush suction machine (carpet brush vacuum cleaner), which is shown in FIG. 1 in a perspective depiction.

DETAILED DESCRIPTION OF THE INVENTION

(18) The cleaning machine 10 comprises a floor head 12 with a roller housing 14.

(19) The floor head 12 is supportable on a surface 16 to be cleaned (cf. FIG. 2) by way of a wheel device 18.

(20) In one embodiment, the wheel device 18 comprises wheels 20 with, in particular, a left rear wheel and a right rear wheel. The wheels 20 are arranged in the region of a rear end of the floor head 12.

(21) Further, one or more rolling devices 22 are arranged on the floor head at a distance from the wheels 20.

(22) The cleaning machine 10 comprises a holding rod device 24, on which a handle 26 is arranged at a proximal end. By way of the handle 26, an operator, while standing, can guide the cleaning machine 10 over the surface 16 to be cleaned.

(23) In one embodiment, the holding rod device 24 comprises one single holding rod 28. A housing 30 is arranged on said holding rod 28. A suction blower device 32 is positioned in the housing 30. The suction blower device 32 comprises a blower motor, which, in particular, is an electric motor, and a corresponding blower device with one or more impellers.

(24) The housing 30 or the holding rod device 24 is connected to the floor head 12 and, in particular, pivotably connected in such a way that the holding rod device 24 is pivotable about a pivot axis relative to the floor head 12 when the floor head 12 is supported on the surface 16 to be cleaned. Said pivot axis is then at least approximately parallel to the surface 16 to be cleaned.

(25) At least one suction mouth 34 is formed on the roller housing 14. Said suction mouth 34 is in fluidic connection with the suction blower device 32.

(26) In one embodiment, the cleaning machine 10 further has a suction pipe 36 on which, in particular, a suction nozzle sits or is positionable. The suction pipe 36 is in fluidic connection with the suction blower device 32 by means of an, in particular flexible, suction hose 38.

(27) A holder 40 for the suction pipe 36 is arranged on the housing 30.

(28) By way of the suction pipe 36, when same is removed from the holder 40, a user can perform a suctioning separately from the suction opening 34.

(29) The roller housing 14 has a roller receptacle 42. The roller receptacle 42 is arranged in the region of a front end 44 of the floor head 12 (the roller housing 14), which faces away from the end at which the wheels 20 are arranged.

(30) The roller receptacle 42 is open at the suction mouth 34. Otherwise it is closed.

(31) The roller receptacle 42 (cf. e.g. FIG. 12) serves to accommodate a cleaning roller 46.

(32) In one embodiment of a brush suction machine, the cleaning roller 46 is a brush roller with a bristle arrangement 48. The bristle arrangement 48 is arranged, in particular, such that the cleaning roller 46 acts as a carpet brush.

(33) It is also possible in principle for the cleaning roller 46 to be a textile roller, or for the cleaning roller 46 to be a combination of a textile roller and brush roller.

(34) The cleaning roller, when it is positioned and fixed in the roller housing 14 and thereby in the roller receptacle 42, is rotatable about a rotational axis 50 (cf. e.g. FIGS. 3 and 12).

(35) The rotational axis 50 is at least approximately parallel to the surface 16 to be cleaned when the floor head 12 is placed on said surface 16, supported by way of the wheel device, in the intended manner.

(36) An end wall 52 on the roller housing 14 is associated with the roller receptacle 42 (cf. FIGS. 3, 8, 12).

(37) An opening 54 is formed in said end wall 52. The opening 54 is an opening of the roller receptacle 42.

(38) The cleaning roller 46 is brought into the roller receptacle 42 through this opening 54 and the cleaning roller 46 is removable from the roller receptacle 42 and thus the floor head 12 through the opening 54.

(39) Further, opposite the opening 54, a wall 56, which is closed, is associated with the roller receptacle 42. The wall 56 is a side wall of the roller housing 14. A rotary bearing 58 for the cleaning roller 46 is arranged on this wall 56. The cleaning roller 46 has a counter element 60 for this rotary bearing 58. By means of the counter element 60, in particular, the cleaning roller 46 is slidable onto the rotary bearing 58.

(40) In one embodiment, provision is made for a drive motor 62 to be arranged in the roller housing 14 for rotatively moving the cleaning roller 46. The drive motor 62 acts on the cleaning roller 46, for example, by way of a belt drive and drives said cleaning roller 46 in its rotational movement. For example, the drive motor 62 acts on the rotary bearing 58 in order to bring about a corresponding rotation, and by way of the counter element 60, the cleaning roller 46 can be non-rotatably connected to the rotary bearing 58.

(41) A lid 64 is provided for closing the opening 54.

(42) A rotary bearing 66 is arranged on the lid 64. When the opening 54 is closed with the lid 64, the rotary bearing 66 then supports the cleaning roller 46 on the lid 64 so as to be rotatable about the rotational axis 50.

(43) The lid 64 is removable as a whole from the roller housing 14 and is a part separate from the roller housing 14, which is fixable to the roller housing 14.

(44) The lid 64 is adapted in its shape to the opening 54.

(45) A bracket 69 sits on the lid 64 so as to be pivotable about a pivot axis 68.

(46) The pivot axis 68 is oriented transversely and in particular perpendicularly in relation to the rotational axis 50. In relation to a lower envelope plane 70 of the roller housing 14 (cf. FIG. 2), wherein, in particular, the lower envelope plane 70 is in relation to the roller housing 14 without a wheel device 18, and which is aligned at least approximately parallel to the surface 16 to be cleaned when the floor head 12 is positioned relative to said surface 16 in the intended manner, the pivot axis 68 is at an acute angle 72 (cf. FIG. 2). This acute angle is, for example, on the order of about 30° and in particular in the range between 20° and 40°.

(47) The bracket 69 is arranged on an outside 74 of the lid 64.

(48) The rotary bearing 66 is arranged on an inside 76 of the lid 64 opposite the outside 74.

(49) The bracket 69 has (cf. e.g. FIG. 4) a first region 78 and a second region 80 spaced at a distance from the first region 78. The first region 78 and the second region 80 are of at least approximately rectilinear configuration.

(50) A third region 82, which is of arcuate configuration, is formed between the first region 78 and the second region 80.

(51) Seated at the first region 78 is a first receptacle 84 for a first convex holding body 86 of the roller housing 14.

(52) Seated at the second region 80 at a distance from the first receptacle 84 is a second receptacle 88 for a second convex holding body 90 of the roller housing 14.

(53) The first receptacle 84 and the second receptacle 88 are non-rotatably arranged on the bracket 69. When pivoting the bracket 69, the first receptacle 84 and the second receptacle 88 are pivoted together therewith.

(54) The bracket 69 is held on the lid 64 by way of a pivot bearing 92. The pivot bearing 92 comprises a first bearing region 94, which sits at the first region 78, and a second bearing region 96, which sits at the second region 80 of the bracket 69. The first bearing region 94 and the second bearing region 96 are spaced at a distance from one another. Arranged between them is the third region 82 of the bracket 69.

(55) The first receptacle 84 and the second receptacle 88 are located on a line that is predetermined by the pivot axis 68.

(56) The first holding body 86 (cf. FIGS. 6, 11, 14) is of convex configuration and in particular is configured as a ball. It sits on the end wall 52 by way of a first neck 98. The second holding body 90 is also of convex configuration and in particular is configured as a retaining ball. It sits on the end wall 52 at a distance from the holding body 86 by way a second neck 100. The opening 54 is located between the first holding body 86 and the second holding body 90.

(57) The first receptacle 84 and the second receptacle 88 each comprise a receiving space 102 for the associated holding body 86 and 90, respectively (cf. FIG. 5, 6, 8, 10, 11).

(58) The receiving space 102 has a first opening 104 (FIGS. 10, 11), through which the associated first holding body 86 or the second holding body 90 is able to pass. The corresponding holding body 86 or 90 is brought in an insertion direction 106 through said opening 104 into the receiving space 102. Further, the corresponding holding body 86, 90 is able to exit the receiving space 102 through this first opening 104 in an exit direction 108, which is an opposite direction to the insertion direction 106.

(59) The receiving space 102 further has a second opening 110 (FIGS. 3, 5, 6). The second opening 110 is, in particular, connected to the first opening 104.

(60) The second opening 110 is configured such that it is not able to be passed through by a holding body 86 or 90 positioned in the corresponding receiving space 102. Formed around the second opening 110 is a wall 112 of the corresponding receptacle 84, 88, which is a blocking wall for the exit of the corresponding holding body 86, 90 in the exit direction 108 (cf. in particular FIG. 6).

(61) The second opening 110 is thereby configured such that the corresponding neck 98, 100 is positionable therein.

(62) By pivoting the bracket 69, the corresponding receptacle 84, 88 can thereby be positioned such that the corresponding neck 98 and 100, respectively, is located in the second opening 110. In this position of the bracket 69, which is a locking position 114, the lid 64 can be (releasably) fixed to the roller housing 14 on the end wall 52 by way of the holding bodies 86, 90.

(63) The receptacles 84, 88 form with the holding bodies 86, 90 and the bracket 69 a locking device 115 for fixing the lid 64 to the roller housing 14.

(64) In particular, the receiving space 102 is delimited by an at least partially spherical wall. This enables a (supported) rotation of the corresponding receptacle 84 or 88 about the pivot axis 68 with the holding body 86 or 90 positioned in the receiving space 102. The receiving space 102 forms a socket, wherein a relative rotation to the roller housing 14 is possible by pivoting the bracket 69 about the pivot axis 68.

(65) In the locking position 114 of the bracket 69 (FIGS. 1 to 6), said bracket 69 is pivoted relative to the lid 64 such that, when the holding bodies 86 and 90 are seated in the respective receiving spaces, the respective first neck 98 or 100 is seated in the second opening 110 and thus the corresponding blocking effect is achieved, which blocks a removal of the lid 64 from the roller housing 14; the lid 64 cannot be removed from the roller housing 14 in the exit direction 108.

(66) Formed on the lid 64 on the outside 74 is a recess 116 which is adapted to the shape of the bracket 69 with its first region 78, its second region 80, and its third region 82. The recess 116 is configured as a trough; it forms a depression on the outside 74 of the lid 64.

(67) In the locking position 114 of the pivotable bracket 69, the bracket 69 is positioned in the recess 116. The recess 116 is thereby configured, in particular, such that the bracket cannot project beyond said recess 116. A recessed arrangement of the bracket 69 in the locking position 114 can thus be achieved.

(68) The bracket 69 further has a release position 118 (FIGS. 7 to 12).

(69) In the release position 118, the bracket 69 is pivoted with its first receptacle 84 and its second receptacle 88 such that the respective first opening 104 of the first receptacle 84 or the second receptacle 88 is in such a position that the respective first holding body 86 or second holding body 90 is able to pass through the first opening 104 in the exit direction 108 and thus is able to exit the corresponding receptacle space 102. The lid 64 can thereby be removed from the roller housing 14.

(70) The release position 118 is a pivotal position relative to the locking position 114. For example, a pivot angle between the locking position 114 and the release position 118 is about 90°.

(71) In the release position 118 the bracket 69 projects transversely and in particular perpendicularly away from the outside 74 of the lid 64.

(72) An insertion or exchange of the cleaning roller 46 on the floor head 12 functions as follows:

(73) Commencing from the locking position 114 of the bracket 69 (FIGS. 1 to 6), the lid 64 is locked to the roller housing 14. The bracket 69 is arranged recessed in the recess 116.

(74) The respective holding bodies 86, 90 are positioned at their associated receptacles 84 and 88, respectively, in the respective receiving space 102. The lid 64 thereby covers the holding bodies 86, 90 towards the outside.

(75) The respective first neck 98 of the first holding body 86 and the second neck 100 of the second holding body 90 is positioned in the second opening 110. The wall 112 blocks an exit of the respective holding body 86, 90 from the corresponding receiving space 102 in the exit direction 108.

(76) The exit direction 108 is, in particular, at least approximately parallel to the rotational axis 50.

(77) The cleaning roller 46 is rotatably supported on the lid 64 by way of the rotary bearing 66.

(78) For removing the cleaning roller 46 from the roller receptacle 42, the bracket 69 is pivoted from the locking position 114 into the release position 118. It is thereby taken from the recess 116 and, for example, pivoted by a pivot angle of 90° (FIGS. 7 to 12).

(79) By pivoting the bracket 69, the first receptacle 84 and the second receptacle 88 are pivoted together with the bracket. The openings 104, 110 are thereby also pivoted.

(80) In the release position 118 the respective first opening 104 of the first receptacle 84 and the second receptacle 88 are then positioned such that the holding bodies 86 and 90 are able to exit therethrough in the exit direction 108. By rotating the bracket 69, the wall 112 no longer forms a blocking wall.

(81) The lid 64 can thereby be removed from the roller housing 14; the receptacles 84, 88 can be released from the associated holding bodies 86, 90 in relation to the exit direction 108; the holding bodies 86, 90 can exit the associated receiving spaces.

(82) Further, the lid 64 can thereby be removed from the cleaning roller 46 and can be removed as a whole from the roller housing 14 (cf. FIG. 12).

(83) In particular, the lid 84 and the cleaning roller 46 are loosely connected to one another.

(84) After removal of the lid 64, the cleaning roller 46 can then be slid out of the roller receptacle 42.

(85) To insert a new cleaning roller, same is inserted into the (empty) roller receptacle 42 and is brought into contact with the rotary bearing 58 by way of the counter element 60 of said cleaning roller.

(86) On the lid 64, the pivotable bracket 69 is brought into its release position 118. Said bracket 69 is placed on the roller housing 14. The first opening 104 of the respective first receptacle 84, 88 is thereby positioned such that the associated first holding body 86 or the second holding body 90 dips into the associated receiving space 102.

(87) After the dipping-in process, the bracket 69 is pivoted into its locking position 114. The first receptacle 84 and the second receptacle 88 are thereby rotated and the second opening 110 is thereby pivoted such that the corresponding first neck 98 and second neck 100, respectively, are positioned at said second opening 110. The wall 112 then acts as a blocking element.

(88) It is also possible in principle for the locking position 114 to additionally be secured. For example, a spring-loading of the bracket 69 may be provided, and a spring force has to be overcome in order to bring the bracket 69 from the locking position 114 into the release position 118.

(89) It is also possible, for example, for the pivot bearing 92 to be “stiff” in such a way that an increased application of force is required to reach the release position 118 from the locking position 114.

(90) In a further example (FIGS. 13 to 16), provision is made for the cleaning roller 46′ to be axially lockable to a lid 120. Otherwise, the cleaning machine is configured identically to the cleaning machine 10 and identical reference numerals are used for identical elements.

(91) The cleaning roller 46′ is configured basically identical to the cleaning roller 46. It additional comprises a pin 122 on a side facing away from the counter element 60.

(92) Arranged on the lid 120 is a slider 124, which together with the pin 122 forms a locking device 126 for axially locking the lid 120 to the cleaning roller 46′.

(93) The slider 124 has a recess 128 in which the pin 122 is immersed. In a locking position (cf. FIG. 16) the pin 122 is immersed in the recess 128. The slider 124 is thereby in such a displacement position that an exit of the pin 122 from the recess 128 is blocked. The cleaning roller 46′ is thereby axially fixedly (in a direction parallel to the rotational axis 50) connected to the lid 120.

(94) This locking position can be released by displacing the slider 124. The locking is thereby released and the pin 122 can exit the recess 128 on the lid 120. The cleaning roller 46′ can thereby be released from the lid 120.

(95) With respect to the fixing and locking of the lid 120 to the roller housing 14, this embodiment functions the same as described above.

(96) In the embodiment in accordance with FIGS. 13 to 16, the cleaning roller 46′ is not loosely mounted on the lid 120, rather an axial locking is possible.

(97) To insert the cleaning roller 46′ into the corresponding roller receptacle 42, first the cleaning roller 46′ is locked to the lid 120 by the pin 122 being brought into the recess 128 and the slider 124 then being brought into its locking position.

(98) Axial connection between the lid 120 and the cleaning roller 46′ is thereby produced.

(99) This axial connection hereby such that the cleaning roller 46′ is rotatable relative to the lid 120. For this purpose, a corresponding rotary bearing 130 is arranged on the lid 120.

(100) The cleaning roller 46′ in this combination can then be slid into the roller receptacle 42.

(101) The corresponding bracket 69 on the lid 120 is in its release position 118 and the holding bodies 86, 90 can then dip into their respective receiving spaces 102. By pivoting the bracket 69 into its locking position 114, a locking is achieved.

(102) One proceeds accordingly in reverse to release the cleaning roller 46′ from the roller housing 14.

(103) The combination of lid 120 and cleaning roller 46′, which are axially connected to one another, is removed from the roller housing 14 (cf. FIG. 14). After removal, the lid 120 is then released from the cleaning roller 46′ by means of a corresponding displacement of the slider 124 out of its locking position.

REFERENCE NUMERAL LIST

(104) 10 cleaning machine 12 floor head 14 roller housing 16 surface to be cleaned 18 wheel device 20 wheel 22 rolling device 24 holding rod device 26 handle 28 holding rod 30 housing 32 suction blower device 34 suction mouth 36 suction pipe 38 suction hose 40 holder 42 roller receptacle 44 front end 46 cleaning roller 46′ cleaning roller 48 bristle arrangement 50 rotational axis 52 end wall 54 opening 56 wall 58 rotary bearing 60 counter element 62 drive motor 64 lid 66 rotary bearing 68 pivot axis 69 bracket 70 envelope plane 72 acute angle 74 outside 76 inside 78 first region 80 second region 82 third region 84 first receptacle 86 first holding body 88 second receptacle 90 second holding body 92 pivot bearing 94 first bearing region 98 second bearing region 100 first neck 100 second neck 102 receiving space 104 first opening 106 insertion direction 108 exit direction 110 second opening 112 wall 114 locking position 115 locking device 116 recess 118 release position 120 lid 122 pin 124 slider 126 locking device 128 recess 130 rotary bearing