Device for window glass wiper systems of motorized vehicles

Abstract

To provide a device for connecting a wiper arm and a wiper blade, which is easy to operate and prevents damage to a locking means or an unlocking means when overloaded. [Solution] An apparatus 10 for connecting a wiper arm 50 and a wiper blade includes an adapter 20 connectable to the wiper blade, and an accommodating element 30 connectable to the wiper arm 50 and having an adapter opening 32 for accommodating the adapter 20, the adapter 20 having two deformable locking areas 22, 24 configured to lock the adapter 20 with the accommodating element 30, and an operating means 40 for unlocking the locking areas 22, 24, whereby at the unlocking point, the operating means 40 engages with an engagement opening 34 of the accommodating element 30, and the operating means 40 deforms the locking areas 22, 24 towards each other so that the adapter 20 can be removed through the adapter opening 32.

Description

Technical Field

[0001] The present invention relates to an apparatus for coupling a wiper arm and a wiper blade for a window glass wiper system of a vehicle with a prime mover.

Background Art

[0002] A conventional window glass wiper system for a vehicle with a prime mover typically includes a wiper arm fixed to the vehicle with a prime mover. Similarly, a replaceable wiper blade is fixed to the wiper arm using an adapter. In known embodiments, the wiper blade and the adapter can form an assembly. For this purpose, the wiper blade is coupled to the adapter, and the adapter can be removably fixed to the wiper arm in an adapter housing portion.

[0003] A known fixation for such a standard wiper system is a top-lock locking. The adapter housing portion is often also called a "slider" in this fixation mode. Here, in order to unlock the wiper blade fixed using the adapter from the wiper arm, the adapter of the wiper blade has a push button on the upper side facing away from the window glass.

[0004] In addition, in recent years, the wiper arm has been further developed into a wet arm system for direct wet cleaning of the window glass. Here, for example, a hose for supplying a cleaning liquid and an integrated cleaning nozzle are arranged on the wiper arm.

[0005] However, for functional reasons, the cleaning nozzle and hose should preferably be covered by a cover cap. In this case, the cover cap extends across the entire wiper arm, thereby preventing access to the top lock release button. In addition, the cover cap is secured via an engagement mechanism on the underside of the adapter housing facing downward toward the window glass, which makes handling the wiper blade during replacement considerably more difficult. For this reason, a different concept is needed for releasing the wiper blade in a wet arm wiper system.

[0006] Regarding the standard wiper system described above, which does not have a wet arm, a locking mechanism between the wiper arm and the wiper blade using an adapter is known from Patent Document 1. This locking mechanism comprises an elastic locking arm with a push button located outside the adapter housing. However, the elastic locking arm, as a locking or unlocking mechanism, has the disadvantage of being easily broken under heavy loads. In addition, the locking or unlocking mechanism comprises numerous components, which result in higher costs and more difficult operation.

[0007] A similar locking mechanism for a standard wiper system is also known from Patent Document 2.

[0008] For wet arm wiper systems, a wide variety of locking mechanisms are known from Patent Document 3. In particular, Figure 1 of Patent Document 3 shows various embodiments with hooks, arms with lateral pins, arms with push buttons / sliders, and arms with clamp tabs. However, these locking mechanisms hinder the use of preferred cover caps, because, as mentioned above, the cover caps should extend across the entire wiper arm. In addition, the locking or unlocking means also suffer from the problem of relying on small hooks, pins, arms, and clamp tabs, which are difficult to handle and easily broken under excessive load. Here again, the locking or unlocking means comprises numerous components, which result in greater cost and more difficult operation.

[0009] Similarly, a locking mechanism using a slider for a wet arm wiper system is known from Patent Document 4. This slider also hinders the use of a preferred cover cap. In addition, the insertion of a locking projection into a corresponding recess makes handling difficult because the locking projection is covered by the slider and therefore not visible to the user. Similarly, many components are required for the locking or unlocking mechanism, and these many components result in higher costs and more difficult operation.

[0010] In summary, known devices for connecting wiper arms and wiper blades are prone to breakage of the engagement or disengagement means under overload, and their use of small locking or disengaging means makes them difficult to handle. Furthermore, the numerous components of these known locking or disengaging means contribute to increased product and manufacturing costs. In addition, known devices are unsuitable for use in standard wiper systems without wet arms, as well as in wet arm systems with cover caps. [Prior art documents] [Patent Documents]

[0011] [Patent Document 1] U.S. Patent Application Publication No. 2019 / 0031151 [Patent Document 2] French Patent Application Publication No. 3091237 [Patent Document 3] U.S. Patent Application Publication No. 2015 / 0013095 [Patent Document 4] German Patent Application Publication No. 102010052314 [Overview of the Initiative] [Problems that the invention aims to solve]

[0012] Therefore, the fundamental problem of the present invention is to provide an inexpensive and reliable device for connecting a wiper arm and a wiper blade for a window glass wiper system of a motorized vehicle, which allows for easy operation and prevents damage to the locking or unlocking means in the event of overload. [Means for solving the problem]

[0013] The solution to the problem described herein is provided by the features of the independent claim. An advantageous advanced configuration of the present invention is evident from the dependent claims.

[0014] The problem is solved by the present invention, which provides a device for coupling a wiper arm and a wiper blade for a window glass wiper system of a motorized vehicle, comprising an adapter configured to be coupled to a wiper blade and a housing element configured to be coupled to a wiper arm and having an adapter opening for housing the adapter, wherein the adapter has at least two locking regions that are deformable toward each other, the locking regions configured to lock the adapter to the housing element at locking locations, and the device includes an operating means for releasing the locking regions, at which the operating means engages with an engagement opening of the housing element, and the two locking regions are deformed toward each other by the operating means so that the adapter can be removed through the adapter opening.

[0015] The engagement of the operating means with the engagement opening allows the two locking regions, which are deformable toward each other, to be simultaneously deformed toward each other solely by user operation, thereby greatly simplifying handling. In addition, the force required for locking and unlocking is distributed to at least two locking regions, thereby increasing the overall durability of the device. Furthermore, in the device according to the present invention, the adapter is locked twice over the locking region in the adapter housing, greatly improving the reliability of the locking. Moreover, since the device comprises only a few components, it can be manufactured at low cost.

[0016] In a particularly preferred configuration, the operating means is operable along the operating direction, and the distance between the two locking regions perpendicular to the operating direction is greater at the locking points than at the release points. Therefore, the distance between the two locking regions can be easily reduced simply by moving the operating means along the operating direction. In this case, the distance is reduced so that the adapter can be removed through the adapter opening.

[0017] In another particularly preferred embodiment, the engagement opening is located on the end face side of the device according to the present invention. This arrangement allows for use in both standard wiper systems without a wet arm and wet arm systems with a cover cap. The end face side arrangement of the engagement opening allows the cover cap to start at the engagement opening and extend across the rest of the wiper arm. In this case, it is possible to cover areas that cannot be covered by known top lock locks. Preferably, in this embodiment, the device is elongated. Here, more preferably, the engagement opening is located opposite the coupling side of the housing element, on which the housing element is coupled to the wiper arm.

[0018] In one embodiment, at least one of the locking regions has a wedge-shaped cross-section. This gives the device particularly good durability against forces acting during operation. In this case, the tapered end of the locking region is connected to the operating means, and the wedge shape enhances the resistance of the locking region to breakage.

[0019] In another embodiment, the adapter opening corresponds to the engagement opening. Since only one opening is required, the device is even easier to manufacture and handle.

[0020] In a preferred embodiment, each locking region is provided with an engaging nose portion, which engages with the engaging opening of the housing element at the locking location. The engagement of the locking region with the engaging opening of the housing element ensures a secure and easily removable connection between the adapter and the housing element.

[0021] In a particularly preferred configuration, the operating means comprises a push button, and at least two unlocking regions each having one enlarged-diameter contour portion are arranged on the push button, and the unlocking regions are suitable for deforming the locking regions toward each other at the unlocking location. At this time, the enlarged-diameter contour portion is formed such that the locking regions deform toward each other by operating or moving the push button. Therefore, particularly efficient unlocking is ensured.

[0022] In another embodiment, the locking regions each have one end portion. In this case, when the operating means engages with the engaging opening, the enlarged-diameter contour portion contacts the end portion. By this contact, the transmission of force from the operating means to the locking regions for deforming the locking regions toward each other becomes particularly easy.

[0023] Particularly preferably, at this time, the enlarged-diameter contour portion is formed such that the end portion moves along the enlarged-diameter contour portion when the operating means is displaced along the operating direction toward the unlocking location. Therefore, the locking regions can be deformed toward each other particularly easily for the unlocking location.

[0024] In another embodiment, the operating means is formed such that the enlarged-diameter contour portion is inclined with respect to the operating direction at least in a partial range when engaging with the engaging opening. Thereby, each end portion can be displaced so as to follow in the corresponding enlarged-diameter contour portion, whereby the locking regions deform toward each other and in the operating direction. Thereby, a well-controllable deformation of the locking regions is ensured.

[0025] At this time, the housing element can be integrally coupled to the wiper arm in all embodiments of the present invention. By integral formation or coupling, an inexpensive window glass wiper system can be provided. Instead of this, the housing element and the wiper arm can be formed as two members. In this case, preferably, these members are removably coupled to each other. And due to the modular structure, the use of the device according to the present invention for various wiper arms is simplified.

[0026] The above problem can be similarly solved by a vehicle with a prime mover equipped with at least one of the above-disclosed devices. The above advantages fully apply.

[0027] Hereinafter, embodiments of the present invention will be described based on the drawings.

Brief Description of the Drawings

[0028] [Figure 1] FIG. 15 is a schematic cross-sectional view of an embodiment of the device according to the present invention at the locking position. [Figure 2] FIG. 18 is a schematic cross-sectional view of an embodiment of the device according to the present invention at the unlocking position. [Figure 3] FIG. 21 is a schematic cross-sectional view of an embodiment of the device according to the present invention at the unlocking position similar to FIG. 2.

Embodiments for Carrying Out the Invention

[0029] In FIG. 1, a device 10 according to the present invention for coupling a wiper arm and a wiper blade for a window glass wiper system of a vehicle with a prime mover is shown. Here, the device 10 includes an adapter 20, a housing element 30, and operating means 40. Here, FIG. 1 shows the locking position of the device 10 where the adapter 20 is locked to the housing element 30. Although a wiper blade for window glass cleaning can be fixed to the adapter 20, this is not shown in FIG. 1 for simplicity.

[0030] As schematically shown in Figure 1, the housing element 30 can be coupled to the wiper arm 50 so as to be integrally formed with the wiper arm 50. Thus, the housing element 30 forms one component of the wiper arm 50. However, it is also conceivable that the housing element 30 and the wiper arm 50 are formed of two members. In this case, preferably, these members are detachably coupled to each other. The wiper arm 50 is fixed to the end of a motorized vehicle and is driven in wiper operation for window glass cleaning by known driving means (not shown).

[0031] Preferably, the housing element 30 is equipped with a stopper 30.1 for restricting the movement of the adapter 20 within the housing element 30, so that the user can more easily find the correct locking position of the adapter 20 within the housing element 30.

[0032] As can be seen in Figure 1, the housing element 30 is preferably formed in a hollow shape and is configured to house the adapter 20. In this case, the adapter 20 can be pushed into the housing element 30 through the adapter opening 32. Figure 1 illustrates an embodiment in which the adapter opening 32 is located on one end face side 12 of, for example, an elongated device 10. The end face side 12 is preferably on the side opposite to the wiper arm side 14 to which the housing element 30 of the device 10 is connected to the wiper arm 50.

[0033] In another embodiment, the adapter opening 32 may be located on the lower side 16 of the device 10, so that when the device 10 is mounted on a vehicle, the lower side 16 faces the vehicle window glass of the motorized vehicle. Then, in order to insert or remove the adapter 20, the wiper arm 50 needs to be lifted away from the window glass.

[0034] In relation to the adapter 20, it is particularly important that both locking regions 22 and 24 are deformable toward each other under the action of force. Preferably, the locking regions 22 and 24 face each other, thereby facilitating this type of deformation. Preferably, the locking regions 22 and 24 are elastically deformable in all embodiments.

[0035] Furthermore, Figure 1 shows that the adapter 20 comprises at least one first locking region 22 having a first engaging nose portion 22.1 and a first end portion 22.2, and a second locking region 24 having a second engaging nose portion 24.1 and a second end portion 24.2. Here, the end portions 22.2 and 24.2 face toward the end face side 12 of the device 10. At the engagement point shown in Figure 1, the first engaging nose portion 22.1 engages with the first engagement opening 36. Correspondingly, the second engaging nose portion 24.1 engages with the second engagement opening 38. At least by this engagement, the adapter 20 is locked to the housing element 30. At this time, it is conceivable that there are additional locking regions that engage with the housing element 30 as described above.

[0036] In the locking location shown in Figure 1, the two locking regions 22 and 24 are not deformed toward each other and have a locking gap d1 between them. At this time, the locking gap d1 extends perpendicular to the operating direction R of the operating means 40 between the two locking regions 22 and 24.

[0037] Furthermore, Figure 1 shows that the locking regions 22 and 24 have a wedge-shaped cross-section, with the adapter body portion 20.1 positioned at the base of the wedge shape, and the wedge shape tapering towards the ends 22.2 and 22.4. This allows for particularly durable deformation of the locking regions 22 and 24 in opposite directions.

[0038] Preferably, the adapter 20 is formed from a single component. However, it is also conceivable that the aforementioned elements of the adapter are composed of separate components and assembled from them.

[0039] In all embodiments, the adapter 20 may further be formed such that the locking regions 22 and 24 are joined to each other around their periphery at the end portions 22.2 and 24.2, so that the locking region 22 or 24 is defined by its engaging nose portion 22.1 or 24.1. In Figure 1, when viewed along the unlocking direction R, a periphery boundary line appears (not shown). However, it is also conceivable that the locking regions 22 and 24 are separated from each other using recesses in the adapter 20.

[0040] To release the adapter 20, the housing element 30 is provided with an engagement opening 34. Preferably, the engagement opening is located on the end face side 12 of the housing element 30. The engagement opening 34 is configured such that, at a locking location, the operating means 40 engages with the housing element 30 at a first operating location as shown in Figure 1. At the first operating location, the operating means is positioned engaged with the housing element 30, and the locking regions 22, 24 have not yet been deformed toward each other by the operating means 40. The operating means 40 can be detachably locked, for example, to the housing element 30 at the first operating location.

[0041] As can be seen in Figure 1, the operating means 40 includes a push button 42 as a main body element, and the push button is provided with a first lock release area 44 having a first enlarged diameter contour 44.1 and a second lock release area 46 having a second enlarged diameter contour 46.1.

[0042] Figure 2 illustrates the release point of the device 10. For this purpose, the operating means 40 moves further into the housing element 30 along the operating direction R. At the release point, the operating means 40, having release regions 44, 46, engages with the engagement opening 34 of the housing element 30 at the second operating point, as shown in Figure 2. At the second operating point of the operating means 40, having reached the release point, the locking regions 22, 24 are deformed toward each other by the operating means 40.

[0043] As can be seen in Figure 1, the enlarged diameter contour 44.1 already contacts the corresponding end portion 22.2 before reaching the second operating point, and similarly, the enlarged diameter contour 46.1 also contacts the corresponding end portion 24.2. Due to the displacement of the operating means 40 from the first operating point to the second operating point along the operating direction R, the end portion 22.2 moves along the enlarged diameter contour 44.1. Similarly, the end portion 24.2 also moves along the enlarged diameter contour 46.1. Therefore, the locking regions 22 and 24 are deformed toward each other simultaneously and solely by the displacement of the operating means 40.

[0044] Preferably, the operating means 40 is formed such that when engaged with the engagement opening 34, the enlarged diameter contours 44.1 and 46.1 are inclined with respect to the operating direction R in at least a partial range. This facilitates deformation or allows for predetermined deformation of the locking regions 22 and 24 toward each other.

[0045] As can be seen in Figure 2, at the second operating or unlocking point, the end portions 22.2 and 24.2 may contact a portion of the enlarged diameter contour 44.1 or 46.1 that is different from the inclined portion of the enlarged diameter contour 44.1 or 46.1. Here, the end portions 22.2 and 24.2 can be, for example, detachably coupled to the operating means 40. For this reason, engagement is conceivable. In this other portion, the enlarged diameter contour 44.1 or 46.1 can be, for example, oriented perpendicular to the operating direction.

[0046] At this time, it is also possible that the engaging nose portions 22.1 and 24.1 may come into contact with the inclined portion of the enlarged diameter contour portion 44.1 or 46.1 at the release point. This makes it possible to ensure better deformation of both locking regions 22 and 24 toward each other at the release point.

[0047] At the disengagement point, the two locking regions 22 and 24 are deformed toward each other, so that the locking regions have a disengagement interval d2 that is smaller than the locking interval d1 relative to each other. In this case, the disengagement interval d2 extends perpendicular to the operating direction R of the operating means 40 between the two locking regions 22 and 24.

[0048] As a result, on the one hand, both engaging nose portions 22.1 and 24.1 are released from their respective engaging openings 36 and 38 at the release point. On the other hand, the adapter 20 is deformed at the release point so that it can be removed from the housing element 30.

[0049] The removal is shown, for example, in Figure 3. In the embodiment shown in Figure 3, the adapter opening 32 corresponds to the engagement opening 34. In this case, the locking release interval d2 is selected so that the adapter 20 can be removed at the end face side 12 of the device 10 through the adapter opening 32 or the engagement opening 34 at the locking release point. In this case, the operating means 40 remains at the second operating point where the locking regions 22 and 24 are deformed toward each other.

[0050] Conversely, it is also conceivable that the adapter 20 can be pushed into the housing element 30 through the adapter opening 32 for installation at the release point. Here, preferably, the adapter 20 is pushed in at its second operating point by the operating means 40. However, it is also conceivable that the locking regions 20 and 24 are deformed toward each other only by the adapter opening 32 so that the adapter 20 can be pushed into the housing element 30 at the locking point and the adapter 20 can be fully housed in the housing element 30.

[0051] However, it is also possible that the adapter opening 32 is different from the engagement opening 34, for example, when the adapter opening 32 is located on the lower side 16 of the device 10 and the engagement opening is located on the end face side 12 of the device 10. In this case, the adapter 20 can be removed through the adapter opening 32 on the lower side 16 of the device 10 at the point where it is released from locking.

[0052] Basically, in all embodiments, a spring element 60 can be optionally provided in the device 10 to provide a restoring force between the locking regions 22 and 24. The optional spring element is preferably positioned between the locking regions 22 and 24, as shown in Figures 1 to 3. The restoring force contributes, on the one hand, to increasing the strength of the engagement between the engaging nose portion 20 and the housing element 30, thereby ensuring that the adapter 20 is more securely fixed in the housing element 30. On the other hand, the locking regions 22 and 24 can reliably return to their locking positions if they have been deformed in advance toward each other towards the unlocking positions as described above.

[0053] The adapter 10, housing element 30, operating means 40, and optional spring element 60 are preferably formed of synthetic resin and / or metal that enable the locking, deformation, and / or spring action described above. Furthermore, the present invention may also encompass the following embodiments: 1. A device (10) for connecting a wiper arm (50) and a wiper blade for a window glass wiper system of a motorized vehicle, An adapter (20) configured to be connectable to a wiper blade, A housing element (30) is configured to be connectable to a wiper arm (50) and has an adapter opening (32) for housing an adapter (20) and The adapter (20) includes at least two locking regions (22, 24) that are deformable toward each other, and the locking regions are configured to lock the adapter (20) with the housing element (30) at the locking points. The device includes an operating means (40) for releasing the locking regions (22, 24), wherein at the release point, the operating means (40) engages with the engagement opening (34) of the housing element (30), and at this time, the two locking regions (22, 24) are deformed toward each other by the operating means (40) so that the adapter (20) can be removed through the adapter opening (32). 2. The apparatus according to 1. above, characterized in that the operating means (40) is operable along the operating direction (R), and the distance between the two locking regions (22, 24) perpendicular to the operating direction (R) is greater at the locking points than at the unlocking points. 3. The device (10) according to 1. or 2. above, characterized in that the engagement opening (34) is located on the end face side (12) of the device (10). 4. The apparatus (10) according to any one of 1. to 3. above, characterized in that at least one of the locking regions (22, 24) has a wedge-shaped cross-section. 5. The apparatus (10) according to any one of 1. to 4. above, characterized in that the adapter opening (32) corresponds to the engagement opening (34). 6. The device (10) according to any one of 1. to 5. above, characterized in that each locking region (22, 24) is provided with one engaging nose portion (22.1, 24.1), and the engaging nose portion (22.1, 24.1) engages with the engaging openings (36, 38) of the housing element (30) at the locking location. 7. The device (10) according to any one of 1 to 6 above, wherein the operating means (40) is equipped with a push button (42), and the push button (42) is provided with at least two locking release areas (44, 46) each having one enlarged contour portion (44.1, 46.1), and the locking release areas are suitable for deforming the locking areas (22, 24) toward each other at the locking release point. 8. The apparatus (10) according to 7. above, characterized in that each locking region (22, 24) has one end portion (22.2, 24.2), and when the operating means (40) is engaged with the engagement opening (34), the enlarged diameter contour portion (44.1, 46.1) comes into contact with the end portions (22.2, 24.2). 9. The apparatus (10) according to 8. above, characterized in that when the operating means (40) is displaced along the operating direction (R) toward the locking release point, the enlarged diameter contour portion (44.1, 46.1) is formed such that the end portion (22.2, 24.2) moves along the enlarged diameter contour portion (44.1, 46.1). 10. The apparatus according to 9. above, characterized in that the operating means (40) is formed such that the enlarged diameter contour portion (44.1, 46.1) is inclined with respect to the operating direction (R) in at least a partial range when engaged with the engagement opening (34). 11. A motorized vehicle comprising at least one device (10) described in any one of items 1 to 10 above. [Explanation of symbols]

[0054] 10 equipment 12 End side 14. Wiper arm side 16 Lower side 20 adapters 20.1 Adapter body 22 First locking area 22.1 First Engaging Nose 22.2 First terminal portion 24 Second locking area 24.1 Second Engaging Nose 24.2 Second terminal section 30 containment elements 30.1 Stopper 32 Adapter opening 34 Engagement opening 36 First engagement opening 38 Second engagement opening 40 Operating means 42 Press buttons 44 First release area 44.1 First enlarged contour 46 Second release area 46.1 Second enlarged contour 50 Wiper Arm 60 spring elements R Operation direction d1 locking interval d2 Lock release interval

Claims

1. A device (10) for connecting a wiper arm (50) and a wiper blade for a window glass wiper system of a motorized vehicle, An adapter (20) configured to be connectable to a wiper blade, A housing element (30) is configured to be connectable to a wiper arm (50) and has an adapter opening (32) for housing an adapter (20) and The adapter (20) includes at least two locking regions (22, 24) that are deformable toward each other, and the locking regions are configured to lock the adapter (20) with the housing element (30) at the locking points. The device includes an operating means (40) for releasing the locking regions (22, 24), wherein at the release point, the operating means (40) engages with the engagement opening (34) of the housing element (30), and at this time, the two locking regions (22, 24) are deformed toward each other by the operating means (40) so that the adapter (20) can be removed through the adapter opening (32).

2. The apparatus according to claim 1, characterized in that the operating means (40) is operable along the operating direction (R), and the distance between the two locking regions (22, 24) perpendicular to the operating direction (R) is greater at the locking points than at the unlocking points.

3. The apparatus (10) according to claim 1 or 2, characterized in that the engagement opening (34) is located on the end face side (12) of the apparatus (10).

4. The apparatus (10) according to claim 1 or 2, characterized in that at least one of the locking regions (22, 24) has a wedge-shaped cross-section.

5. The apparatus (10) according to claim 1 or 2, characterized in that the adapter opening (32) corresponds to the engagement opening (34).

6. The device (10) according to claim 1 or 2, characterized in that each locking region (22, 24) is provided with one engaging nose portion (22.1, 24.1), and the engaging nose portion (22.1, 24.1) engages with the engaging openings (36, 38) of the housing element (30) at the locking location.

7. The device (10) according to claim 1 or 2, wherein the operating means (40) is equipped with a push button (42), and the push button (42) is provided with at least two release areas (44, 46) each having one enlarged contour portion (44.1, 46.1), and the release areas are suitable for deforming the locking areas (22, 24) toward each other at the release point.

8. The apparatus (10) according to claim 7, characterized in that each locking region (22, 24) has one end portion (22.2, 24.2), and when the operating means (40) is engaged with the engagement opening (34), the enlarged diameter contour portion (44.1, 46.1) comes into contact with the end portions (22.2, 24.2).

9. The apparatus (10) according to claim 8, characterized in that the enlarged diameter contour portion (44.1, 46.1) is formed such that when the operating means (40) is displaced along the operating direction (R) toward the release point, the end portion (22.2, 24.2) moves along the enlarged diameter contour portion (44.1, 46.1).

10. The apparatus according to claim 9, characterized in that the operating means (40) is formed such that when engaged with the engagement opening (34), the enlarged diameter contour portion (44.1, 46.1) is inclined with respect to the operating direction (R) in at least a partial range.

11. A motorized vehicle comprising at least one device (10) according to claim 1 or 2.

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