Mounting device for attaching a mounting element for a two-wheel accessory to a distal end of a two-wheel handlebar

Abstract

Holding device (10) for attaching a holding element (12) for a two-wheel accessory (14) to a distal end (16) of a two-wheel handlebar (18), wherein the holding device (10) has a holding section (20) for releasably attaching the holding device (10) to the distal end (16) of the two-wheel handlebar (18) and a fastening section (22) to which the holding element (12) is attached, wherein the fastening section (22) is designed to enable tool-free rotation of the attached holding element (12) relative to the holding device (10) in a plane of rotation about an axis of rotation (24) in discrete, fixedly predetermined rotational positions, wherein the fastening section (22) comprises a first sliding surface (54) rotationally fixed to the fastening section (22) and a second sliding surface (66) rotationally fixed to the retaining element (12), wherein the sliding surfaces (54, 66) extend parallel to the plane of rotation and the sliding surfaces (54, 66) slide against each other during the rotational movement of the retaining element (12) relative to the retaining device (10) and are designed such that they define the discrete rotational positions, characterized by the fact that the fastening section (22) comprises a housing (36) in the interior of which a blind hole (38) is formed, wherein the first sliding surface (54) is directed into the interior of the blind hole (38) and a sliding sleeve (56) is slidably received in the blind hole (38) parallel to the axis of rotation (24) and the sliding sleeve (56) has the second sliding surface (66) which is arranged opposite the first sliding surface (54) when the holding device (10) is mounted.

Description

[0001] The present invention relates to a holding device for attaching a holding element for a two-wheeled accessory to a distal end of a two-wheeled handlebar according to the preamble of claim 1. The two-wheeled accessory can be a bicycle or motorcycle rearview mirror, a mobile device of a user of the two-wheeled vehicle, or the like. Accordingly, the holding device can be provided for attaching a rearview mirror, a mobile phone, or a mobile navigation device to the distal end of a handlebar of a two-wheeled vehicle.

[0002] The following example discusses a mounting device for attaching a rearview mirror to the distal end of a motorcycle handlebar (so-called handlebar end). However, it is understood that the present invention is not limited to this use, but can be used to attach any two-wheeled accessory to the distal end of handlebars of any two-wheeled vehicle.

[0003] Mounting rearview mirrors for two-wheelers on the handlebar end is very popular. The mounting element is formed by a mirror arm, which is releasably attached to the holding section of the mounting device, e.g., by means of a fastening screw, and to which the rearview mirror is attached, e.g., via a ball joint, to allow adjustment or alignment of the mirror.

[0004] When rear-view mirrors are mounted on the handlebar end, rearward visibility is improved because, unlike when rear-view mirrors are mounted further towards the middle of the handlebar, the rider's arms, shoulders and / or upper body do not obstruct the view to the rear. Secondly, mounting rear-view mirrors on the handlebar end is widespread for aesthetic reasons because mounting at the handlebar end is possible using relatively short mirror arms. Since rear-view mirrors mounted further inside the handlebar on inevitably long mirror arms are often viewed as foreign objects that detract from the design of the two-wheeler, mounting at the handlebar end using short mirror arms is preferred for design reasons. Rear-view mirrors on the handlebar end can be mounted above or below the handlebar.

[0005] However, handlebar-mounted rearview mirrors increase the overall width of the bicycle. Therefore, there is a risk that the mirrors could be damaged by contact with other objects (walls, posts, other vehicles, door or gate frames, etc.) when maneuvering, parking, or leaving the bicycle unattended. Aside from the visual disadvantages caused by scratches or dents on the rearview mirrors, there is a risk of glass breakage with rearview mirrors with mirror glass. Rearview mirrors without mirror glass (see, for example, DE 10 2016 115 110 A1), whose mirror surface is formed by the polished metal material (e.g., aluminum) of a solid mirror body, carry the risk of irreparable damage (scratching) upon contact with other objects, despite a relatively hard, transparent anodized protective layer on the mirror surface.

[0006] Theoretically, with the existing mounting devices for motorcycle mirrors, it would be possible to use a suitable tool to loosen the mirror arm's fastening to the mounting device while maneuvering, parking, or leaving the motorcycle. This allows the mirror arm, together with the attached rearview mirror, to be folded inward from an operating position into a protective position. However, this has the disadvantage that it requires a suitable tool and that the rearview mirror, in particular, must be adjusted or aligned back into the desired operating position after folding it back in order to ensure an optimal view to the rear. This is time-consuming and labor-intensive and therefore not feasible in practice.

[0007] A holding device of the type mentioned above is known from DE 19 16 664 U.

[0008] Based on the described prior art, the present invention is based on the object of designing and developing a holding device for a two-wheel accessory mounted on the handlebar end of a two-wheeler in such a way that the two-wheel accessory can be moved quickly and easily between a folded-out operating position and a folded-in protective position.

[0009] To achieve this object, a holding device having the features of claim 1 is proposed. In particular, starting from the holding device of the type mentioned at the outset, it is proposed that the fastening section comprises a housing in the interior of which a blind hole is formed, wherein the first sliding surface is directed into the interior of the blind hole and a sliding sleeve is received in the blind hole so as to be displaceable parallel to the axis of rotation and the sliding sleeve has the second sliding surface which, when the holding device is mounted, is arranged opposite the first sliding surface.

[0010] The present invention operates without tools, i.e. no separate tool is required to change the position of the holding element and the two-wheeled accessory attached to it, e.g. a rear-view mirror, between the unfolded operating position and the folded-in protective position. Changing between the operating position and the protective position is achieved by rotating the holding element relative to the holding device in a rotation plane about a rotation axis. The holding device has several discrete, fixed rotational positions into which the holding element can be rotated relative to the holding device. One of the rotational positions corresponds to the operating position and another of the rotational positions corresponds to the protective position. This ensures, on the one hand, that the holding element and the two-wheeled accessory attached to it are held in a precisely defined, fixed protective position and are not positioned uncontrollably on the two-wheeler or handlebars.dangle on it. On the other hand, this ensures that the retaining element and the attached bicycle accessory are positioned exactly in the previously set desired operating position after folding back, without the need for adjustment or alignment. With a bicycle accessory designed as a rearview mirror, an optimal view to the rear can thus be ensured after the rearview mirror is turned back to the operating position without any adjustment or alignment.

[0011] The discrete rotational positions are fixed and preferably evenly spaced from one another. For example, it would be conceivable for them to enable rotational movement of the retaining element relative to the holding device in discrete angular increments of 15°, 30°, 45°, 60°, or 90°. Of course, they can also enable rotational movement in other angular increments. With rotational positions spaced at discrete angular increments of, for example, 30°, the retaining element, together with the attached bicycle accessory, could be rotated inward from the operating position into a desired protective position by, for example, 30°, 60°, 90°, 120°, 150°, etc.

[0012] In the invention, preferably only the holding element is reproducibly moved between the discrete, fixed rotational positions relative to the holding device, without changing the previously adjusted or aligned position of the two-wheeled accessory relative to the holding element, in which the two-wheeled accessory is attached to the holding element. This eliminates the need for adjusting and aligning the two-wheeled accessory after the operating position has been reached again.

[0013] The present invention thus allows a user to fold a rearview mirror mounted on the handlebar end of a two-wheeler from the extended operating position into the protective position to prevent damage to the mirror during parking, stopping, maneuvering, etc. When folded out into the operating position, the rearview mirror returns to exactly the same previously adjusted or aligned position as before folding.

[0014] In the invention, care was taken to ensure that the adjustment of the holding element is not too easy in order to avoid accidental adjustment during operation of the two-wheeler, for example due to wind load or vibrations. On the other hand, care was also taken to ensure that the adjustment is not too difficult in order to prevent accidental adjustment of the relative position in which the two-wheeler accessory (e.g. the rear-view mirror) is attached to the holding element, due to the high forces then applied by the user when adjusting between the operating and protective positions. Using the example of a rear-view mirror which is attached to a holding element designed as a mirror arm in an adjustable or alignable manner via a ball joint, for example, excessive forces required to adjust the rear-view mirror between the operating and protective positions could otherwise relatively easily lead to an adjustment of the relative position of the rear-view mirror to the mirror arm.

[0015] Furthermore, the invention ensures that the mechanism for implementing the rotational movement of the holding element relative to the holding device in the rotational plane is free of play in the discrete, fixed rotational positions. This prevents wind loads and / or vibrations of the two-wheeler or its engine that occur during operation of the two-wheeler from causing vibration of the two-wheeler accessory, which would impede the visual detection of the two-wheeler accessory or its contents or display (e.g., the reflection on the mirror surface) by the rider of the two-wheeler.

[0016] Furthermore, the holding device according to the invention is particularly compact and small-sized and consists of very few parts. All components required for adjusting or aligning the relative position between the holding device and the holding element, as well as the mechanism for implementing the rotational movement of the holding element relative to the holding device in the rotational plane in the discrete, fixed rotational positions, are preferably integrated into the holding device. In particular, the mechanism for implementing the rotational movement is arranged largely, preferably entirely, inside the holding device, making it virtually invisible from outside the holding device.

[0017] Finally, the holding device according to the invention can be manufactured particularly quickly, easily, and cost-effectively. In particular, the holding device is designed to be manufactured using as many standard parts as possible, so that as few new parts as possible need to be developed and manufactured. Due to the small number of individual parts and the optimized design of the holding device with a view to reducing assembly effort, the holding device can be manufactured and assembled particularly quickly and cost-effectively.

[0018] To realize the rotational movement of the holding element relative to the holding device in the rotational plane in the discrete, fixed rotational positions, the holding device can have a locking mechanism, wherein the operating position and the protective position correspond to different locking positions of the locking mechanism. The locking mechanism is preferably spring-loaded, so that the holding element is held relative to the holding device in the operating or protective position by spring force.

[0019] The locking mechanism provides the user with clear haptic feedback, clearly communicating that a discrete rotational position has been reached during the adjustment process. Clearly noticeable clicks, with the retaining element firmly engaging in the locking or rotational position, provide the user with a sense of security during operation and prevent incorrect operation.

[0020] The fastening section comprises a first sliding surface that is rotationally fixed to the fastening section and a second sliding surface that is rotationally fixed to the holding element. The sliding surfaces extend parallel to the rotation plane and slide on one another during the rotational movement of the holding element relative to the fastening section and are configured to define the discrete rotational positions. The sliding surfaces operatively connect or engage with one another at least in the operating and protective positions to define the discrete rotational positions. The sliding surfaces are thus an example of how the locking mechanism could be implemented.

[0021] The first sliding surface can be formed on a component of the holding device that is non-rotatably attached to the fastening section of the holding device. The fastening can be achieved, for example, by means of a threaded engagement between the component with the first sliding surface and the fastening section. It is conceivable for the component with the first sliding surface to have an external thread that engages with a corresponding internal thread of the fastening section and can be screwed into it. Likewise, the second sliding surface can be formed on a component of the holding device that is non-rotatably attached to the holding element, for example by means of a fastening screw.

[0022] According to a preferred embodiment of the invention, it is proposed that the first and second sliding surfaces each have a wave geometry with a plurality of successive wave crests and wave troughs, wherein the wave crests and wave troughs extend in the circumferential direction of the sliding surfaces about a rotational axis of the rotational movement, and the wave geometries of the first and second sliding surfaces engage with one another at least in the discrete rotational positions of the holding element relative to the holding device. The wave geometries of the sliding surfaces are thus an example of how the locking mechanism could be implemented. Particularly preferably, the wave geometries of the first and second sliding surfaces are brought into engagement with one another or held in engagement with one another by spring loading.

[0023] Advantageously, the successive wave crests and troughs of the wave geometries of the first and second sliding surfaces are connected to one another by flanks. The wave geometries of the first and second sliding surfaces only touch in the area of ​​the flanks, at least in the operating and protective position, and preferably in all discrete rotational positions, and are spaced from one another in the area of ​​the wave crests and troughs. In the discrete rotational positions, the wave geometries therefore do not lie on top of one another over their entire surface. Rather, there is a gap between the peaks of the wave crests and the lowest points of the wave troughs. This ensures that the locking mechanism is free of play and that vibrations of the two-wheeler accessories, which are attached to the handlebar end via the holding element and the holding device, are avoided during operation of the two-wheeler. This can also have acoustic advantages, as rattling between the sliding surfaces orbetween the holding element and the holding device is prevented.

[0024] Preferably, the extent in the circumferential direction of the wave crests of the wave geometries of the first and / or second sliding surface and the extent in the circumferential direction of the wave troughs of the wave geometries of the first and / or second sliding surface are different. In particular, it is proposed that the geometry of the wave crests of the second sliding surface assigned to the holding element be slightly larger in the circumferential direction than the dimensions of the wave troughs of the first sliding surface assigned to the fastening section. This is one way of ensuring that the wave geometries of the first and second sliding surfaces touch each other only in the region of the flanks, at least in the operating and protective positions, and preferably in all discrete rotational positions.

[0025] According to another advantageous development of the present invention, it is proposed that the holding device comprises a pressure piece which is fastened to the fastening section in a rotationally fixed manner, wherein the pressure piece has the first sliding surface, so that the second sliding surface, which is assigned to the holding element in a rotationally fixed manner, rotates relative to the first sliding surface during the rotational movement of the holding element relative to the holding device. The pressure piece is thus an example of the above-mentioned component of the holding device which has the first sliding surface. The pressure piece can be provided by means of an external thread which can engage with a corresponding internal thread formed on the fastening section in order to fasten the pressure piece to the fastening section. On its outer circumferential surface or on an end face, the pressure piece can have at least one tool engagement (e.g.in the form of a slot, a Phillips slot, a hexagon socket, a recess or similar) in order to be able to screw the pressure piece onto the fastening section using a suitable tool - and to loosen it again if necessary.

[0026] To implement the spring force acting on the locking mechanism, the fastening section can have a spring element configured to press the retaining element into one of the discrete rotational positions and hold it there through its spring force. The spring element can be implemented in any manner as long as it applies a spring force of the desired magnitude and acts on the locking mechanism, enabling the rotational movement of the retaining element relative to the retaining device in the rotational plane in the discrete, fixed rotational positions.

[0027] The spring element is preferably designed as a compression spring. More preferably, the spring element comprises a package of several disc spring washers arranged coaxially to one another along a spring axis. The individual disc spring washers each have a curvature in their disc plane. The spring washers are preferably arranged next to one another along the spring axis in such a way that curved sides of adjacent spring washers and non-curved sides of adjacent spring washers touch one another. At least five, preferably at least eight, more preferably at least ten disc spring washers are provided for the spring element. The spring axis of the spring element can run parallel or coaxially to the axis of rotation of the rotary movement of the holding element relative to the holding device in the rotation plane in the discrete, fixed rotational positions.

[0028] The fastening section of the holding device has a blind hole for accommodating the spring element. This means that the spring element is no longer visible from the outside and is located inside the holding device, protected from mechanical and other external influences. The blind hole can be drilled or milled into a housing of the holding device. It would also be conceivable to produce the housing with the blind hole by injection molding. The housing of the holding device is preferably made of metal, in particular aluminum. The housing can be coated, e.g., anodized, to improve its resistance to weathering and chemical influences.

[0029] The holding device comprises a sliding sleeve, which is mounted displaceably in the blind hole parallel to a longitudinal axis of the blind hole. The sliding sleeve is preferably subjected to a spring force from the spring element in order to move it linearly within the blind hole or to push it in a specific direction. The spring force is preferably directed parallel to the longitudinal axis of the blind hole and out of the hole. The spring force can act on the sliding sleeve via a contact surface facing the spring element.

[0030] The second sliding surface of the sliding sleeve is preferably formed on the side of the sliding sleeve opposite the contact surface. The second sliding surface surrounds a cylindrical portion of the sliding sleeve, in which an internal thread for the fastening screw can be formed, by means of which the sliding sleeve is attached to the retaining element.

[0031] The sliding sleeve can be fastened to the holding element in a rotationally fixed manner. The sliding sleeve can have the second sliding surface, so that during the rotational movement of the holding element relative to the holding device, the second sliding surface rotates together with the holding element relative to the first sliding surface that is rotationally fixedly assigned to the fastening section. The sliding sleeve is thus an example of the above-mentioned component of the holding device that has the second sliding surface. The sliding sleeve can be fastened to the holding element by means of a fastening screw. The fastening screw can be passed through an opening in the holding element from a first side and screwed into an internal thread formed in the sliding sleeve on the other side. The rotationally fixed fastening of the sliding sleeve to the holding element can be achieved by means of a frictional connection or a positive connection between the sliding sleeve and the holding element.

[0032] It is further proposed that the pressure piece, which is rotationally fixed to the fastening section, closes the blind hole. The pressure piece preferably has an external thread that interacts with an internal thread formed in the blind hole. The pressure piece can thus be screwed onto the blind hole and then closes the blind hole. The pressure piece can have a cover section that protrudes radially beyond the external thread to ensure a tight closure of the blind hole. A sealing element can be provided between the pressure piece and the fastening section to close the blind hole particularly tightly.

[0033] The first sliding surface is preferably formed on a side of the pressure piece opposite the cover section. When the pressure piece is attached to the fastening section, the first sliding surface is thus directed toward the interior of the blind hole.

[0034] Finally, it is proposed that the holding element is attached to the fastening section so as to be translationally movable relative to the holding device parallel to a rotation axis of the rotational movement.

[0035] Because the blind hole is closed by the pressure piece, the spring element presses the sliding sleeve against the pressure piece, or the second sliding surface of the sliding sleeve against the first sliding surface of the pressure piece. A rotational movement of the holding element relative to the holding device inevitably leads to a rotational movement of the second sliding surface relative to the first sliding surface. Due to the wave geometries formed on the sliding surfaces, the rotational movement leads to a translational movement of the holding element relative to the holding device in a direction parallel to the longitudinal axis of the blind hole or the axis of rotation of the rotational movement.

[0036] Due to the rotational movement, starting from a first discrete rotational position, when a wave crest of one sliding surface is moved out of the wave trough of the other sliding surface, the sliding sleeve and the pressure piece, and thus also the holding element and the holding device, move away from each other in a translational manner. The sliding sleeve is pressed further into the blind hole against the spring force of the spring element. After the wave crests of the two sliding surfaces have slid past each other during a further rotational movement of the holding element relative to the holding device, the spring force of the spring element presses the sliding sleeve back towards the pressure piece, or the holding element and the holding device towards each other again. The spring element presses the holding element, together with the two-wheeler accessory attached to it, into the next discrete rotational position. The first rotational position can, for example, correspond to the operating position of the two-wheeler accessory.Likewise, the next or another discrete rotation position may correspond to the protective position of the two-wheel accessory.

[0037] Further features and advantages of the present invention are explained in more detail below with reference to the figures. They show: Fig. 1 shows a holding device according to the invention according to a preferred embodiment in an exploded view; Fig. 2 the holding device Fig. 1 in assembled condition in a sectional view; Fig. 3 the holding device Fig. 1 in its unfolded operating position; Fig. 4 the holding device Fig. 1 in a folded protective position; Fig. 5 Wave geometries of first and second sliding surfaces of a locking mechanism of the holding device from Fig. 1 in a discrete, fixed rotational position; and Fig. 6 the wave geometries from Fig. 5 in an intermediate position between two discrete, fixed rotational positions.

[0038] The figures show a holding device 10 according to the invention for fastening a holding element 12 for a two-wheel accessory 14 (cf. Fig. 3 and Fig. 4) at a distal end 16 of a two-wheel handlebar 18. The holding device 10 has a holding portion 20 for releasably fastening the holding device 10 to the distal end 16 of the two-wheel handlebar 18 and a fastening portion 22 to which the holding element 12 is fastened.

[0039] The two-wheeled accessory 14 can be a bicycle or motorcycle rearview mirror, a mobile device of a user of the two-wheeled vehicle, or the like. Accordingly, the holding device 10 can be provided for attaching a rearview mirror 14, a mobile phone, a mobile navigation device, or the like to the distal end 16 of the handlebar 18 of a two-wheeled vehicle.

[0040] The invention will be described in more detail below using a holding device 10 for attaching a rearview mirror 14 to the distal end 16 of a motorcycle handlebar 18 (so-called handlebar end). However, it is understood that the present invention is not limited to this use, but can be used to attach any two-wheeled accessory to the distal end 16 of handlebars 18 of any two-wheeled vehicle.

[0041] The fastening section 22 is designed to enable a tool-free rotational movement of the holding element 12 attached thereto relative to the holding device 10 in a rotational plane in discrete, fixed rotational positions. The rotational plane runs perpendicular to a rotational axis 24.

[0042] The present invention operates without tools, ie for changing the position of the holding element 12 and the attached thereto, for example by means of a ball joint 78 (cf. Fig. 4) mounted rearview mirror 14 between the unfolded operating position (cf. Fig. 3) and the folded protective position (cf. Fig. 4) No separate tool is required. Switching between the operating position and the protective position is accomplished simply by rotating the holding element 12 relative to the holding device 10 in the rotation plane about the rotation axis 24. The holding device 10 has several discrete, fixed rotational positions into which the holding element 12 can be rotated relative to the holding device 10. One of the rotational positions corresponds to the operating position, and another of the rotational positions corresponds to the protective position.

[0043] This ensures, on the one hand, that the holding element 12 and the attached rearview mirror 14 are held in a precisely defined, fixed protective position and are not positioned or swung uncontrollably on the bicycle or the handlebar 18. On the other hand, it also ensures that the holding element 12 and the attached rearview mirror 14 are positioned exactly in the previously set desired operating position after being folded back, without the need for adjustment or alignment. Thus, after the rearview mirror 14 is rotated back to the operating position, an optimal view to the rear is guaranteed without any adjustment or alignment.

[0044] The discrete rotational positions are fixed and preferably evenly spaced from one another. For example, it would be conceivable for them to enable a rotational movement of the holding element 12 relative to the holding device 10 in discrete angular increments of, for example, 60°. Of course, they can also enable a rotational movement in other angular increments, for example, 45°. With rotational positions spaced from one another in discrete angular increments of 60°, the holding element 12, together with the rearview mirror 14 attached to it, can be rotated into a total of six discrete rotational positions. Starting from an operating position, the holding element 12 can therefore be rotated by 60°, 120°, 180°, 240°, and 300° into a desired protective position. With angular increments of 45°, for example, eight discrete rotational positions are theoretically available.

[0045] In the invention, only the holding element 12 is reproducibly moved between the discrete, fixed rotational positions relative to the holding device 10, without changing the previously adjusted or aligned position of the rearview mirror 14 relative to the holding element 12, in which the rearview mirror 14 is attached to the holding element 12. As mentioned, this eliminates the need to adjust and align the rearview mirror 14 after the operating position has been reached again.

[0046] The present invention thus allows a user to open a rearview mirror 14 mounted on the handlebar end 16 of a two-wheeler from the unfolded operating position (cf. Fig. 3) into the protective position (cf. Fig. 4) to prevent damage to the mirror 14 when parking, stopping, maneuvering, etc. When folded out into the operating position, the rearview mirror 14 is again in exactly the same previously adjusted or aligned position as before folding.

[0047] To realize the rotational movement of the holding element 12 relative to the holding device 10 in the rotational plane in the discrete, fixed rotational positions, the holding device 10 can have a locking mechanism, wherein the operating position and the protective position correspond to different locking positions of the locking mechanism. The locking mechanism is preferably spring-loaded, so that the holding element 12 is held in the operating or protective position relative to the holding device 10 by spring force.

[0048] The locking mechanism provides the user with clear haptic feedback, clearly communicating that a discrete rotational position has been reached during the adjustment process. Clearly perceptible clicks, with which the retaining element 12 firmly engages in the locking or rotational position, provide the user with security during operation and prevent incorrect operation.

[0049] Furthermore, the invention ensures that the locking mechanism is free of play both linearly (parallel to the rotational axis 24) and rotationally (around the rotational axis 24). This prevents wind loads and / or vibrations of the two-wheeler or its engine that occur during operation of the two-wheeler from causing vibration of the rearview mirror 14, which would make it difficult for the rider of the two-wheeler to visually detect the reflection on a mirror surface of the rearview mirror.

[0050] The holding section 20 of the holding device 10 preferably comprises a clamping mechanism, which in the example shown is designed as a clamping ring 26. The clamping ring 26 is interrupted in the circumferential direction by a slot 28. An inner circumference of the clamping ring 26 can be reduced by pressing together the opposite ends 30 of the clamping ring 26 defining the slot 28, and the holding section 20 can thereby be secured to the handlebar end 16. The pressing together of the ends 30 of the clamping ring 26 can be achieved, for example, by means of a retaining screw 32, which can be passed through an opening in one end 30 and screwed into an internal thread in the other end 30. Using an adapter ring 34, a clamping diameter of the clamping ring 26 can be adapted to the diameter of the handlebar 18 at the handlebar end 16 or to different handlebar diameters. By tightening the retaining screw 32, the holding device is clamped to the handlebar end 16.

[0051] The fastening section 22 of the holding device 10 comprises a housing 36, which can be formed integrally with the holding section 20 or the clamping ring 26. The housing 36 preferably has a cylindrical or cylinder-like shape, with a cylinder axis running parallel or coaxial with the rotation axis 24. A blind hole 38 (cf. Fig. 2). The blind hole 38 preferably has a cylindrical shape, with a longitudinal axis of the blind hole 38 preferably running parallel or coaxially to the rotation axis 24. An opening 40 of the blind hole 38 is formed at an end of the housing 36 facing away from the holding section 20.

[0052] A spring element 42, which is designed as a compression spring, is accommodated in the blind hole 38. The spring element 42 can comprise a package of several disc spring washers 44 arranged coaxially with one another along a spring axis. The spring axis runs parallel or coaxially to the axis of rotation 24. The individual disc spring washers 44 each have a curvature in their disc plane. The spring washers 44 are preferably arranged next to one another along the spring axis in such a way that the curved sides of adjacent spring washers 44 and the non-curved sides of adjacent spring washers 44 touch one another (cf. Fig. 2). In the example shown, ten disc spring washers 44 are provided. Of course, depending on the desired spring force of the spring element 42, any number of disc spring washers 44 can also be provided. Likewise, the spring element 42 can also be designed differently than in this embodiment.

[0053] The opening 40 of the blind hole 38 is closed by a pressure piece 46, which is attached to the fastening section 22 of the holding device 10. For fastening, the pressure piece 46 has an external thread 48, which is connected to an internal thread 50 (see Fig. 2) which is formed in the blind hole 38 adjacent to the opening 40. The pressure piece 46 can have a cover section 52 which protrudes radially beyond the external thread 48 and rests on an end face of the housing 36 of the fastening section 22, surrounding the opening 40. The cover section 52 ensures a tight closure of the blind hole 38. A sealing element (not shown) can be provided between the pressure piece 46, in particular the cover section 52, and the fastening section 22 in order to close the blind hole 38 particularly tightly.

[0054] To prevent the pressure piece 46 from automatically and unintentionally unscrewing from the fastening section 22 during operation of the two-wheeler or when adjusting the holding device 10, a fine thread, particularly preferably a self-locking thread, is preferably used as the external thread 48 and / or as the internal thread 50. Alternatively or additionally, suitable securing means can also be used, for example in the form of a retaining ring, a lock washer, a snap ring, or a liquid threadlocker. A high-strength liquid threadlocker used during assembly and a relatively high tightening torque of at least 50 Nm, preferably at least 70 Nm, particularly preferably at least 80 Nm, permanently prevent the pressure piece 46 from automatically unscrewing from the housing 36 of the fastening section 22.

[0055] On its outer peripheral surface or on an outer end face, the pressure piece 46 can have at least one tool engagement 76 (e.g. in the form of a slot, a Phillips slot, a hexagon socket, a recess or the like; cf. Fig. 4) in order to be able to screw the pressure piece 46 onto the fastening section 22 using a suitable tool - and to loosen it again if necessary.

[0056] A first sliding surface 54 can be formed on a side of the pressure piece 46 opposite the cover section 52. When the pressure piece 46 is attached to the fastening section 22, the first sliding surface 54 is thus directed toward the interior of the blind hole 38.

[0057] Furthermore, a sliding sleeve 56 is slidably received in the blind hole 38, parallel to the cylinder axis or, in the exemplary embodiment, to the longitudinal axis 24. The sliding sleeve 56 is rotationally fixedly attached to the holding element 12. For fastening, a fastening screw 58 can be provided, which is guided through an opening 60 in the holding element 12 and engages an internal thread 62 (cf. Fig. 2) of the sliding sleeve 56 is screwed. The rotationally fixed attachment of the sliding sleeve 56 to the holding element 12 can be achieved by means of a frictional or positive connection between the sliding sleeve 56 and the holding element 12. A bore with the internal thread 62 is preferably formed in a cylindrical section 64 of the sliding sleeve 56. The sliding sleeve 56 can have a second sliding surface 66 which, when the holding device 10 is mounted, is arranged opposite the first sliding surface 54. The second sliding surface 66 preferably surrounds the cylindrical section 64. Thanks to the sliding sleeve 56, the holding element 12 fastened thereto is fastened to the fastening section 22 so that it can be moved translationally relative to the holding device 10 parallel to the axis of rotation 24 of the rotary movement.

[0058] The spring element 42 is supported on the one hand on a base 68 (cf. Fig. 2) of the blind hole 38 and, on the other hand, against a contact surface 70 of the sliding sleeve 56. This pushes the sliding sleeve 56 out of the blind hole 38 toward the pressure piece 46.

[0059] During the rotational movement of the holding element 12 relative to the holding device 10, the second sliding surface 66 of the sliding sleeve 56 rotates together with the holding element 12 relative to the first sliding surface 54 of the pressure piece 46, which is non-rotatably assigned to the fastening section 22.

[0060] The sliding surfaces 54, 66 have a main plane of extension that runs parallel to the rotational plane. During the rotational movement of the holding element 12 relative to the fastening section 22 of the holding device 10, the sliding surfaces 54, 66 slide against one another. The sliding surfaces 54, 66 are designed to define the discrete rotational positions. The sliding surfaces 54, 66 operatively engage with one another at least in the operating and protective positions to define the discrete rotational positions. The sliding surfaces 54, 66 are thus an example of how the locking mechanism can be implemented.

[0061] It is proposed that the first and second sliding surfaces 54, 66 each have a wave geometry with a plurality of wave crests 72 and wave troughs 74 following one another in the circumferential direction. The wave crests 72 and wave troughs 74 extend in the circumferential direction of the sliding surfaces 54, 66 around the rotational axis 24 of the rotational movement. The wave geometries of the first and second sliding surfaces 54, 66 engage with one another at least in the discrete rotational positions of the holding element 12 relative to the holding device 10 (cf. Fig. 5). The wave geometries of the sliding surfaces 54, 66 are thus an example of how the locking mechanism can be implemented. The wave geometries of the first and second sliding surfaces 54, 66 are brought into engagement or held in place by the spring element 42 under spring load.

[0062] The successive wave crests 72 and wave troughs 74 of the wave geometries of the first and second sliding surfaces 54, 66 are connected to one another by flanks (A) (cf. Fig. 5). The shaft geometries of the first and second sliding surfaces 54, 66 touch each other at least in the operating and protective positions (cf. Fig. 5), preferably in all discrete rotational positions, only in the region of the flanks (A) and are spaced from one another in the region of the wave crests 72 and wave troughs 74. The wave geometries therefore do not lie on top of one another over their entire surface in the discrete rotational positions. Rather, there is a gap 80 between the peaks of the wave crests 72 and the lowest points of the wave troughs 74. This ensures that the locking mechanism is rotationally play-free in the direction of rotation about the rotation axis 24 and vibrations of the holding element 12 or the rearview mirror 14 are avoided during operation of the two-wheeler. This can also have acoustic advantages, since rattling between the sliding surfaces 54, 66 or between the holding element 12 and the holding device 10 is avoided.

[0063] It is further proposed that an extension in the circumferential direction of the wave crests 72 of the wave geometries of the first and / or second sliding surface 54, 66 and an extension in the circumferential direction of the wave troughs 74 of the wave geometries of the first and / or second sliding surface 54, 66 be of different sizes. In particular, it is proposed that the geometry of the wave crests 72 of the second sliding surface 66 assigned to the holding element 12 be slightly larger in the circumferential direction than the dimensions of the wave troughs 74 of the first sliding surface 54 assigned to the fastening section 22. However, it would also be conceivable for the geometry of the wave crests 72 of the first sliding surface 54 assigned to the fastening section 22 to be slightly larger in the circumferential direction than the dimensions of the wave troughs 74 of the second sliding surface 66 assigned to the holding element 12.These are ways to ensure that the shaft geometries of the first and second sliding surfaces 54, 66 only touch in the flank area, at least in the operating and protective positions, and preferably in all discrete rotational positions. In this way, a rotational backlash-free state of the locking mechanism or the holding device 10 can be achieved.

[0064] Because the blind hole 38 is closed by the pressure piece 46, the spring element 42 presses the sliding sleeve 56 against the pressure piece 46 or the second sliding surface 66 of the sliding sleeve 56 against the first sliding surface 54 of the pressure piece 46. A rotational movement of the holding element 12 relative to the holding device 10 inevitably leads to a rotational movement of the second sliding surface 66 relative to the first sliding surface 54. Due to the wave geometries formed on the sliding surfaces 54, 66, the rotational movement leads to a translational movement of the holding element 12 relative to the holding device 10 in a direction parallel to the longitudinal axis of the blind hole 38 or to the axis of rotation 24 of the rotational movement.

[0065] Due to the rotational movement, starting from a first discrete rotational position, a wave crest 72 of one sliding surface 54; 66 is moved out of the wave trough 74 of the other sliding surface 66; 54 (cf. Fig. 6), to a translational movement away from each other of the sliding sleeve 56 and the pressure piece 46 and thus also of the holding element 12 and the holding device 10. In this case, the sliding sleeve 56 is pressed further into the blind hole 38 against the spring force of the spring element 42.

[0066] After the wave crests 72 of the two sliding surfaces 54, 66 have slid past each other during a further rotational movement of the holding element 12 relative to the holding device 10, the spring force of the spring element 42 presses the sliding sleeve 56 back toward the pressure piece 46, or the holding element 12 and the holding device 10 back toward each other. The spring element 42 presses the holding element 12, together with the rearview mirror 14 attached thereto, into the next discrete rotational position (see. Fig. 5). The first rotational position may, for example, correspond to the operating position of the rearview mirror 14. Likewise, the next or a subsequent discrete rotational position may correspond to the protective position of the rearview mirror 14.

[0067] The rotation plane is preferably a vertical plane or a plane only slightly inclined to the vertical plane and runs perpendicular to the rotation axis 24 of the holding device 10. Accordingly, the rotation axis 24 preferably runs parallel to a direction of travel of the two-wheeler or only slightly inclined thereto.

[0068] How to use the Fig.3, the rearview mirror 14 protrudes laterally beyond the handlebar ends 16 in the operating position, thus increasing the overall width of the two-wheeler. In the folded-in protective position, however, the overall width is significantly reduced compared to the operating position. Preferably, the overall width of the two-wheeler is then defined by the width of the handlebars 18, i.e., the rearview mirrors 14 are folded inward so far that they no longer protrude laterally beyond the handlebar ends 16.

[0069] In order to achieve linear freedom from play in the direction of the rotational axis 24, the spring element 42 is preloaded during assembly, i.e. when the pressure piece 46 is screwed into the housing 36. For this purpose, the depth of the blind hole 38 for the disc springs 44 in the housing 36, the number of disc springs 44, the material thickness of the disc springs 44 and the geometry of the sliding sleeve 56 must be selected such that when the pressure piece 46 is fully screwed into the housing 36, the spring element 42 is sufficiently preloaded and further compression with a safety margin can be ensured by the translational movement of the sliding sleeve 56, without plastically deforming the spring element 42 or the disc springs 44 due to excessive stress.

Claims

[1] Holding device (10) for fastening a holding element (12) for a two-wheel accessory (14) to a distal end (16) of a two-wheel handlebar (18), wherein the holding device (10) has a holding section (20) for releasably fastening the holding device (10) to the distal end (16) of the two-wheel handlebar (18) and a fastening section (22) to which the holding element (12) is fastened, wherein the fastening section (22) is designed to enable a rotational movement of the holding element (12) fastened thereto relative to the holding device (10) in a rotational plane about a rotational axis (24) in discrete, fixedly predetermined rotational positions without the need for tools, wherein the fastening section (22) comprises a first sliding surface (54) which is rotationally fixedly associated with the fastening section (22) and a second sliding surface (66) which is rotationally fixedly associated with the holding element (12), wherein the sliding surfaces (54, 66) extend parallel to the plane of rotation and the sliding surfaces (54, 66) slide on one another during the rotational movement of the holding element (12) relative to the holding device (10) and are designed such that they define the discrete rotational positions, characterized by , that the fastening section (22) comprises a housing (36) in the interior of which a blind hole (38) is formed, wherein the first sliding surface (54) is directed into the interior of the blind hole (38) and a sliding sleeve (56) is slidably received in the blind hole (38) parallel to the axis of rotation (24) and the sliding sleeve (56) has the second sliding surface (66) which, when the holding device (10) is mounted, is arranged opposite the first sliding surface (54). [2] Holding device (10) according to claim 1, characterized by in that the first and second sliding surfaces (54, 66) each have a wave geometry with a plurality of successive wave crests (72) and wave troughs (74), wherein the wave crests (72) and wave troughs (74) extend in the circumferential direction of the sliding surfaces (54, 66) about an axis of rotation (24) of the rotational movement and the wave geometries of the first and second sliding surfaces (54, 66) engage with one another in the discrete rotational positions. [3] Holding device (10) according to claim 2, characterized byin that the successive wave crests (72) and wave troughs (74) of the wave geometries of the first and second sliding surfaces (54, 66) are connected to one another by flanks (A), wherein the wave geometries of the first and second sliding surfaces (54, 66) in the discrete rotational positions only touch in the region of the flanks (A) and are spaced from one another in the region of the wave crests (72) and wave troughs (74). [4] Holding device (10) according to claim 2 or 3, characterized by that an extension in the circumferential direction of the wave crests (72) of the wave geometries of the first and / or second sliding surface (54, 66) and an extension in the circumferential direction of the wave troughs (74) of the wave geometries of the first and / or second sliding surface (54, 66) are of different sizes. [5] Holding device (10) according to claim 4, characterized bythat an extension in the circumferential direction of the wave crests (72) of the wave geometries of the first and / or second sliding surface (54, 66) is greater than an extension in the circumferential direction of the wave troughs (74) of the wave geometries of the first and / or second sliding surface (54, 66). [6] Holding device (10) according to one of the preceding claims, characterized by in that the holding device (10) has a pressure piece (46) which is fastened to the fastening section (22) in a rotationally fixed manner, wherein the pressure piece (46) has the first sliding surface (54) so ​​that the second sliding surface (66) which is assigned to the holding element (12) in a rotationally fixed manner rotates relative to the first sliding surface (54) during the rotational movement of the holding element (12) relative to the holding device (10). [7] Holding device (10) according to one of the preceding claims, characterized bythat the sliding sleeve (56) is fastened to the holding element (12) in a rotationally fixed manner, so that the second sliding surface (66) rotates together with the holding element (12) relative to the first sliding surface (54) which is assigned to the fastening section (22) in a rotationally fixed manner during the rotational movement of the holding element (12) relative to the holding device (10). [8] Holding device (10) according to one of the preceding claims, characterized by that the fastening section (22) has a spring element (42) which is designed to press the holding element (12) into one of the discrete rotational positions and to hold it there by means of its spring force. [9] Holding device (10) according to claim 8, characterized by that the spring element (42) is designed as a compression spring and in particular comprises a package of several disc spring washers (44) arranged coaxially to one another along a spring axis. [10] Holding device (10) according to claim 8 or 9, characterized bythat the spring element (42) is received in the blind hole (38). [11] Holding device (10) according to one of claims 8 to 10, characterized by that the spring element (42) is supported on the one hand on a bottom (68) of the blind hole (38) and on the other hand on a contact surface (70) of the sliding sleeve (56). [12] Holding device (10) according to claim 6, characterized by that the pressure piece (46) which is fixedly fastened to the fastening section (22) in a rotationally fixed manner closes the blind hole (38). [13] Holding device (10) according to one of the preceding claims, characterized by that the holding element (12) is attached to the fastening section (22) so as to be translationally movable relative to the holding device (10) parallel to the axis of rotation (24) of the rotational movement. [14] Holding device (10) according to one of the preceding claims, characterized byin that the holding section (20) comprises a clamping mechanism designed as a clamping ring (26), wherein the clamping ring (26) is interrupted in the circumferential direction by a slot (28) and an inner circumference of the clamping ring (26) can be reduced by pressing together opposite ends (30) of the clamping ring (26) defining the slot (28) and the holding section (20) can thereby be fixed to the handlebar end (16).

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