Adapter of a bicycle handlebar accessory, bicycle handlebar with adapter, and bicycle with adapter
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ROSE BIKES
- Filing Date
- 2026-02-02
- Publication Date
- 2026-08-06
Smart Images

Figure EP2026052592_06082026_PF_FP_ABST
Abstract
Description
[0001] ROSE Bikes GmbH
[0002] Schersweide 4
[0003] 46395 Bocholt
[0004] Adapter for a bicycle handlebar accessory, bicycle handlebars with adapter and bicycle with adapter
[0005] The invention relates to an adapter, in particular a bicycle handlebar adapter, especially a racing bike handlebar adapter, for attaching a handlebar accessory, such as a mirror or a bell, to a bicycle handlebar, in particular a bicycle handlebar, especially a racing bike handlebar, comprising a first coupling part that can be permanently attached to the bicycle handlebar and a second coupling part that can be coupled to the first coupling part and is directly connected to the handlebar accessory. The invention further relates to a bicycle handlebar and a bicycle with such an adapter.
[0006] Adapters for attaching handlebar accessories to bicycle handlebars are well known. In particular, adapters are known that form an intermediate piece between the typically tubular handlebar and a mounting platform for the handlebar accessory. These adapters are generally formed by a single, continuous component. One end is pre-assembled and permanently connected to the respective handlebar accessory, such as a bell with a bell striker. The other end is positioned around the handlebar and can be secured by a section that wraps around it. This securing mechanism is usually achieved by a clamp, which may be activated and / or secured by a fastening screw. It has been shown that, especially in cycling, very quick assembly and disassembly of such handlebar accessories is desirable.In particular, there is a desire to be able to quickly and easily mount or dismount such handlebar accessories for transport purposes, to quickly and easily replace defective handlebar accessories, such as a broken mirror, and / or to quickly and easily exchange the handlebar accessory itself for another handlebar accessory, such as a mirror for a bell.
[0007] Furthermore, it is known that, especially with racing bikes, there is a constant effort to further optimize not only the bicycle itself, but also the ergonomics of the rider with regard to aerodynamics, particularly to make the bikes especially streamlined with the lowest possible air resistance while riding.
[0008] The object of the present invention is therefore to provide an adapter in which at least one of the above-mentioned disadvantages is improved and, in particular, quick interchangeability of the handlebar accessory and improved aerodynamics are enabled.
[0009] The invention solves the stated problem by means of an adapter with the features of the main claim, by means of a bicycle handlebar with the features of claim 15, and by means of a bicycle with the features of claim 16. Advantageous embodiments and further developments of the invention are disclosed in the dependent claims, the description, and the figures.
[0010] According to the invention, the adapter, in particular the first coupling part, can be attached to a longitudinal end of the bicycle handlebar, in particular the racing bike handlebar, especially to an end face of the longitudinal end of the bicycle handlebar.
[0011] The present adapter is not to be understood as merely an intermediate piece, as described above, but rather as a detachable coupling device for quickly connecting the first and second coupling parts. This means that the second coupling part does not have to be permanently connected to the first coupling part, but can be detached and / or removed from it. Road bike handlebars are well known in various designs. For example, road bike handlebars are divided into classic, anatomical, and ergonomic designs. All road bike handlebars have in common that they have a handlebar whose two axial ends, especially the front faces, point backwards when the handlebars are mounted on a bicycle, or in other words: they point backwards.The longitudinal end of a racing bike handlebar, especially a racing bike handlebar stem, is therefore always located pointing backwards on a racing bike.
[0012] The longitudinal end of a bicycle handlebar, especially a racing handlebar, is located not only distally but also laterally. This means that, relative to the bicycle, the longitudinal end is typically positioned in a laterally protruding area. As a result, the longitudinal end of a racing handlebar usually extends laterally towards the cyclist's torso. This makes it particularly suitable, for example, for mounting a handlebar accessory designed as a side mirror.
[0013] On a racing bike, the end of the handlebars is typically positioned very low on the handlebars. This makes placing a mirror or bell particularly suitable for aerodynamic reasons. It is especially advantageous if the handlebar accessory is mounted on the end of the handlebars. On a racing bike, as mentioned above, the end of the handlebars is usually positioned so that it faces backwards, away from the main direction of travel. Therefore, placing a mirror or bell on this "leeward" side of the handlebars is particularly well-suited for aerodynamic reasons.
[0014] The handlebar accessory can, in principle, be any component of a bicycle. In particular, the handlebar accessory can also be a bicycle light or a bicycle turn signal. In this case, the handlebar accessory is preferably a non-electrical or non-electronic component. Specifically, the handlebar accessory is not a lamp or a computer. Rather, the handlebar accessory can be a purely mechanical component, in particular a bicycle bell or a bicycle mirror. Such components are usually permanently mounted on the handlebars. In this case, it is intended that such components can be quickly removed and replaced. This significantly increases the individuality and convenience of the bicycle handlebar design.
[0015] The adapter, particularly the first and second coupling parts, is preferably designed as a quick-release adapter. This allows the first and second coupling parts to be connected or disconnected by hand, especially without tools. Specifically, the second coupling part can be mounted and dismounted from the first coupling part without tools, and in particular, locked and unlocked. This design makes it possible to quickly and easily mount, dismount, or replace the handlebar accessory on a bicycle at any location, especially without any tools.
[0016] In a first embodiment of the invention, a positive-locking connection is provided for coupling the first coupling part with the second coupling part. This connection can, in particular, be a purely positive-locking connection or a combination of a positive-locking and force-locking connection, especially a friction-locking connection. A clamping fixation has proven to be an advantageous connection, for example, by means of at least one axially interlocking section. This section can, for example, be formed by a projection arranged on the first coupling part and a recess arranged on the second coupling part, wherein, during coupling, the projection can engage in the recess and be held therein, for example, by clamping. The first coupling part can accordingly have at least one projection, and the second coupling part can have at least one recess corresponding to the at least one projection.The recess can also be referred to as a receptacle or receiving section for the projection. At least one recess or receptacle can be formed by a component of the first or second coupling part; for example, at least one recess for receiving a corresponding projection can be formed on a clamping or expander part or on a fastening screw of the first or second coupling part. On a fastening screw, the recess or receptacle can be formed, in particular, by a recessed wrench flat for turning the fastening screw. The recess can, for example, be formed by a standardized wrench flat, in particular by an internal hexagonal surface or an internal star surface. This allows the adapter to be manufactured in a particularly compact and cost-effective manner. The fixation of the second coupling part to the first coupling part can optionally be further reinforced by a magnet.
[0017] In a preferred embodiment, the adapter is designed as a ball joint, wherein one of the first and second coupling parts has a ball head and the other of the first and second coupling parts has an expandable receptacle. To couple the first and second coupling parts, the other of the first and second coupling parts with the expandable receptacle can be attached or clipped onto the ball head of one of the first and second coupling parts. To decouple the first and second coupling parts, the other of the first and second coupling parts with the expandable receptacle can be removed from the ball head of one of the first and second coupling parts, particularly without tools. This allows the second coupling part to be coupled to the first coupling part especially quickly and securely.
[0018] A translational plug connection and / or a rotary lock, particularly a bayonet lock, is particularly preferred for coupling the first coupling part to the second coupling part. In a first embodiment, a translational plug connection, for example, the second coupling part can be inserted straight into the first coupling part for coupling. The two coupling parts can be fixed in place, in particular, by a purely clamping action, for example, by adjacent side surfaces. In particular, the second coupling part can be held to the first coupling part by a purely frictional connection. In a second embodiment, a rotary connection, for example, the first coupling part can be inserted into the first coupling part by a rotational movement for coupling.Here, too, the two coupling parts can be fixed by a clamping effect, in particular a frictional connection. In a further embodiment, a combination of translational and rotational connection, it can be provided, for example, that for coupling, the second coupling part is first inserted straight into the first coupling part and then rotated relative to the first coupling part. Here, the two coupling parts can be fixed by a clamping and / or a positive-locking connection. A bayonet fitting can be considered an example of the latter embodiment.
[0019] Alternatively or additionally, a force-fit connection, in particular a friction-fit and / or magnetic connection, can be provided to couple the first coupling part to the second coupling part. For example, an additional fixation of the two coupling parts to each other can be achieved using a magnet. For this purpose, a permanent magnet can be provided on the first coupling part and a counter-magnet or iron part can be provided on the second coupling part at a corresponding location, as is customary. Such a configuration is possible with all of the previously mentioned exemplary configurations, especially in combination with a friction-fit and / or positive-locking connection.
[0020] Preferably, the first coupling part has a substantially cylindrical body. Particularly preferably, the first coupling part consists of a substantially cylindrical body. Such a design is particularly suitable for arranging the adapter at the end face of a racing bicycle handlebar. In particular, the substantially cylindrical body can be inserted into the interior of a tubular racing bicycle handlebar at its end face. For this purpose, the substantially cylindrical body advantageously has a diameter—particularly only slightly—smaller than the interior of the handlebar tube. A portion of the first coupling part can protrude from the end face of the racing bicycle handlebar, particularly with a receiving area for receiving a corresponding portion of the second coupling part.
[0021] In a particular embodiment, a fastening screw extending axially through the first coupling part, especially its cylindrical body, is provided for attaching the first coupling part to the bicycle handlebars. The fastening screw can extend through the entire first coupling part. In this case, the fastening screw can protrude slightly at both axial ends of the first coupling part. This allows a wrench flat of the fastening screw to serve as a receiving area for a corresponding projection on the second coupling part. The area of the wrench flat of the fastening screw can protrude from the end face of the racing handlebars.
[0022] In a further development of this embodiment, the fastening screw, which has a threaded section and a screw head section, features an internal thread extending axially into the screw head section, particularly at its end face. This internal thread serves to receive an additional screw, in particular a coupling screw, arranged coaxially with the fastening screw, for coupling the second coupling part to the first coupling part. This enables a particularly compact design and rapid coupling and decoupling between the second and first coupling parts.
[0023] To attach the first coupling part to the bicycle handlebars, the first coupling part can have an axial sleeve with at least one expander part, at least partially arranged within it, for spreading the sleeve. For example, the expander part can be conical and arranged at the axial end of the sleeve that is located entirely inside the tubular racing handlebars and away from the end face of the racing handlebars, with the expander part protruding from the sleeve with a section of its largest diameter and, when the expander part is driven towards the sleeve, for example by means of the fastening screw, spreading the sleeve outwards. In this embodiment, the expander part advantageously has almost the same diameter as the outer circumference of the sleeve in the section of its largest diameter.The fastening screw can, for example, engage with a thread centrally located in the expander part. Furthermore, it can be provided that at least two expander parts, at least partially arranged in the sleeve, are operatively connected to each other. The two expander parts can, in particular, be designed and arranged such that, when moved towards each other, they spread the sleeve open, especially at one axial end of the sleeve.
[0024] A limiting washer can be arranged at the axial end of the mounting screw, which is inserted into the handlebar tube. This washer can, for example, be radially attached to the mounting screw, thus preventing rotation. If the mounting screw is overtightened or pulled out, the limiting washer can come into contact with the expander element, restricting its movement towards the axial end of the mounting screw. This prevents the expander element from slipping off the mounting screw and being lost inside the handlebar tube if the mounting screw is overtightened or pulled out.
[0025] In a particularly preferred embodiment, a first expander element is arranged at a first axial end region of the sleeve, and a second expander element is arranged at the opposite second axial end region of the sleeve. The two expander elements have inclined surfaces that interact with each other, such that when the expander elements are advanced, these surfaces shift relative to each other in such a way that at least one of the expander elements is pushed radially outward with a section, thereby at least slightly expanding the sleeve in a certain area, and / or a section of at least one of the expander elements engages with the sleeve at an axial end, causing the sleeve to expand at least slightly in that area. The inclined surface is particularly preferably conical. This allows the expander element to bear against the sleeve around its entire circumference.Furthermore, the expander part can engage with the second expander part along its entire circumference, allowing for a particularly homogeneous force distribution during forward movement between the expander parts. The forward movement of at least one of the expander parts towards the other can be achieved using the fastening screw.
[0026] To attach the first coupling part to the bicycle handlebars, either the mounting screw can engage with a thread located on the handlebars, or the mounting screw can be operatively connected to the two expander parts, allowing the expander parts to be moved towards and / or away from each other by means of the mounting screw. Preferably, the mounting screw engages with at least one of the expander parts via a thread. This allows the adapter to be designed particularly compactly.
[0027] A joint, in particular a ball joint, and / or an additional second adapter for coupling the handlebar accessory to the second coupling part is particularly preferred between the second coupling part and the handlebar accessory. This allows the handlebar accessory to be adjusted relative to the second coupling part in a particularly simple manner.
[0028] According to the invention, a bicycle handlebar with a racing handlebar and an adapter attached thereto, possessing at least a few of the aforementioned features, is also provided. The adapter, in particular the first adapter part, can also be part of the handlebar. For example, the adapter can be integrated into the handlebar. This allows the adapter to be designed in a particularly compact manner.
[0029] The preferred design for the bicycle handlebars is a drop handlebar. A drop handlebar can, in particular, have a stem whose two ends, when mounted on a bicycle in the usual way, are positioned opposite the direction of travel. In this case, the adapter can be located at one of these ends. Therefore, placing a mirror or bell on this "leeward" side of the stem is particularly advantageous for aerodynamic reasons.
[0030] According to the invention, a bicycle with a bicycle handlebar and an adapter arranged thereon is also provided, having at least one of the aforementioned features.
[0031] An embodiment of the invention is explained in more detail below with reference to the figures. The same reference numerals denote the same components. Figure 1 schematically shows: a bicycle handlebar with a first coupling part of an adapter according to the invention in a perspective view;
[0032] Figure 2 - a detailed view of the bicycle handlebars according to Fig. 1;
[0033] Figure 3 - a first coupling part of an adapter according to the invention in a perspective view;
[0034] Figure 4a - an adapter according to the invention for attaching a bicycle mirror in a perspective view;
[0035] Figure 4b - an adapter according to the invention for attaching a bicycle bell in a perspective view;
[0036] Figure 5a - a bicycle handlebar with an adapter according to the invention for attaching a bicycle mirror in a perspective view;
[0037] Figure 5b - a detailed view of the bicycle handlebars according to Fig. 5a;
[0038] Figure 6a - a bicycle handlebar with an adapter according to the invention for attaching a bicycle bell in a perspective view;
[0039] Figure 6b - a detailed view of the bicycle handlebars according to Fig. 6a;
[0040] Figure 1 shows a bicycle handlebar according to the invention, designated by reference numeral 1. The bicycle handlebar 1 is designed as a racing handlebar, the handlebar 2 of which is shown here without the other components, in particular without a complete bicycle, for the sake of clarity.
[0041] The bicycle handlebar 1, or the handlebar 2, is manufactured in the manner customary for a racing bicycle handlebar and has its usual shape. The handlebar is formed by a tube 5, which has a first longitudinal end 3a and a second longitudinal end 3b. An adapter 10 according to the invention for attaching a handlebar accessory 13 to the bicycle handlebar 1 is arranged at one of the longitudinal ends, namely the first longitudinal end 3a.
[0042] The second longitudinal end 3b is provided in the usual configuration, in particular without an adapter. Of course, an adapter 10 can alternatively or additionally be provided at the second longitudinal end 3b. The adapter at the second longitudinal end 3b would then be arranged in the same way as the adapter 10 shown at the first longitudinal end 3a.
[0043] The adapter 10 is used to attach a handlebar accessory 13 to the bicycle handlebar 1, in particular to the drop handlebar 2. The adapter 10 comprises a first coupling part 11 and a second coupling part 12. The second coupling part 12 can be connected to the first coupling part 11 to fix a handlebar accessory 13 to the bicycle handlebar 1. The connection of the first and second coupling parts 11, 12 is done exclusively by hand, in particular without tools.
[0044] The first coupling element 11 is arranged directly on the steering rod 2, as shown in Figures 1 and 2. The first coupling element 11 is, in particular, directly connected to the steering rod 2. It is intended that the first coupling element 11 is permanently arranged on the steering rod 2. The first coupling element 11 can, in particular, also be designed as a part of the steering rod 2.
[0045] In the present case, the first coupling part 11 is formed separately and attached to the steering rod 2, in particular within the tube 5 formed by the steering rod 2. The first coupling part 11, which is shown separately in Figure 3, has a substantially cylindrical body 20. The body 20 is formed in particular by a sleeve 21, at least one expander part 17, 18 and a fastening screw 16.
[0046] The sleeve 21 preferably has a length of 1 to 3 cm. The outer diameter of the sleeve 21 is preferably slightly smaller than the inner diameter of the tube 5. This allows the sleeve 21 to be inserted into the tube 5, at least partially. This insertion is ideally made at the end face of the longitudinal end of the steering rod 2, in this case at the first end face 4a of the first longitudinal end 3a. The same can alternatively or additionally be done at the second end face 4b, as already mentioned above.
[0047] Two expander parts 17, 18 are arranged within the sleeve 21. These expander parts 17, 18 have a substantially inclined contact surface on at least one of their sides. The expander parts 17, 18 can be conical, in particular cylindrical with a conical circumference. The region with the smaller diameter is directed towards the longitudinal center of the sleeve. The region with the larger diameter is located at the axial end region 22, 23 of the sleeve 21.
[0048] To attach the first coupling part 11 to the bicycle handlebar 1, in particular to the inner wall surface of the tube 5, the two expander parts 17, 18 arranged in or on the sleeve 21 are operatively connected to each other for spreading the sleeve 21. In particular, the two expander parts 17, 18 can be pressed and displaced against each other by an axial thrust of the sleeve such that they are deflected by means of the inclined contact surface in a radially outward direction of the sleeve 21 and can thus press against an inner wall of the sleeve 21. The deflection is effected in particular by the inclined, especially conical, surfaces of the expander parts 17, 18. The thrust of the expander parts 17, 18 towards or away from each other is effected by a fastening screw 16.
[0049] The fastening screw 16 is operatively connected to at least one of the expander parts 17, 18 via a thread. The fastening screw 16 extends axially through the first coupling part 11, in particular the cylindrical body of the sleeve 21. This allows the fastening screw 16 to drive the expander parts 17, 18 against each other, causing them to move radially outwards from the sleeve 21 due to their inclined surfaces.
[0050] The present design provides that a first expander part 17 is arranged at a first axial end region 22 of the sleeve 21 and a second expander part 18 is arranged at the opposite second axial end region 23 of the sleeve 21. The two expander parts 17, 18 have inclined surfaces that interact with each other such that, when the expander parts 17, 18 are advanced towards each other, at least one of the expander parts 17, 18 expands a section radially outwards or expands the sleeve 21 in a specific area. Alternatively, the fastening screw 16, which is arranged axially in the sleeve 21, can engage with a thread located on the bicycle handlebar 1 and advance at least one expander part against the sleeve, thereby fixing it to the handlebar 2.
[0051] Figures 4a and 4b each show a complete adapter 10, in particular with a first coupling part 11 and a second coupling part 12, mounted on a racing bike handlebar 2.
[0052] The second coupling part 12 is directly connected to the handlebar accessory 13. In particular, the second coupling part 12 is permanently connected to the handlebar accessory 13. The second coupling part 12 can also be designed as part of the handlebar accessory 13, as shown here.
[0053] The handlebar accessory 13 is designed as a bicycle mirror 14 in Figure 4a. In Figure 4b, the handlebar accessory 13 is designed as a bicycle bell 15. The handlebar accessory 13 is, in particular, a non-electrical component. It is possible to couple the handlebar accessories 13, each of which has a second coupling part 12, to one of the first coupling parts 11. This allows for the exchange not only of the same type of handlebar accessory 13, but also of different handlebar accessories 13.
[0054] In the example shown, the coupling of the second coupling part 12 to the first coupling part 11 is achieved by a translational plug connection. Here, the first coupling part 11 is inserted translationally into a recess formed on the second coupling part 12, with a projection on it. The translational insertion movement occurs primarily along the longitudinal axis of the sleeve 21.
[0055] The projection is fixed in the recess solely by friction. This purely clamping fixation allows for quick attachment and removal of the accessory 13. The recess 19 can be formed, for example, by a component such as the expander part 17, 18 and / or a fastening screw 16. In this case, the tool receptacle of the fastening screw 16 forms the recess 19 to receive a projection formed on the second coupling part 12.
[0056] The fixation can also be reinforced by a magnet, which additionally creates a force-fit connection.
[0057] Alternatively or additionally, besides this friction-fit and / or force-fit connection, a form-fit and / or force-fit connection can also be provided. For example, the second coupling part 12, after being axially inserted into a recess, can also be designed to be rotatable and engage in an undercut. For example, a bayonet fitting is provided.
[0058] This ability to quickly connect and disconnect the first coupling part 11 and the second coupling part 12, and / or the handlebar accessory 13 and the second coupling part 12, allows the adapter 10 to also be called a quick-release adapter. The first coupling part 11 and the second coupling part 12, or the handlebar accessory 13 and the second coupling part 12, can be connected or disconnected by hand, in particular without tools. Alternatively or additionally, a fastening screw 16 can be provided, which also enables quick connection of the first and second coupling parts 11, 12.
[0059] Figures 5a, 5b and 6a, 6b each show a sectional view of the examples shown in Figures 4a and 4b, respectively. These figures clearly show how the fastening screw 16 is arranged and designed. The fastening screw 16 has a threaded section 16a and a screw head section 16b. In the screw head section 16b, particularly at the end face of the screw 16, a bore with an internal thread 16c is formed, extending axially into the screw head section 16b. The bore with internal thread 16c serves to receive an additional screw 30, in particular a coupling screw for coupling the second coupling part 12 to the first coupling part 11, which is arranged, in particular, coaxially with the fastening screw 16.
[0060] In the example shown in Figures 4a, 5a, and 5b, a spherical adapter part is attached to the fastening screw 16, and thus to the first coupling part 11, by means of the additional screw 30. The spherical adapter part is a component of a joint 40, in particular a ball joint, arranged between the second coupling part 12 and the handlebar accessory 13. This ball joint 40 forms an additional second adapter for coupling the handlebar accessory 13 to the second coupling part 12. The second coupling part 12 can be permanently fixed to the first coupling part 11, for example, by means of the fastening screw 16, and only the handlebar accessory 13 can be attached to or removed from the second coupling part 12.
[0061] The ball joint 40 comprises a ball head 41 arranged on the second coupling part 12 and an expandable receptacle 42 arranged on the handlebar accessory 13. The receptacle 42 is attached to or clipped onto the ball head 41 and can be rotated by applying force. This allows the handlebar accessory 13 to be adjusted and fastened to the second coupling part 12 particularly quickly and securely.
[0062] In the example shown in Figures 4b, 6a and 6b, the dome or bell of a bicycle bell 15 is attached to the mounting screw 16 and thus to the first coupling part 11 by means of the additional screw 30. The tool receptacle of the screw head of the additional screw 30 can be formed at a center point of the dome or bell and be accessible for assembly and disassembly, particularly from the outside, i.e., from the surroundings.
[0063] As can be seen particularly in Figures 5b and 6b, a limiting washer 50 is arranged at the axial end of the fastening screw 16 located in the tube 5. This limiting washer 50 is radially mounted onto the fastening screw 16 and is thus rotationally fixed to it. The limiting washer 50 serves to prevent the loss of the expander part 17 inside the tube 5 if the fastening screw 16 is overtightened or pulled out. To achieve this, the limiting washer 50 comes into contact with the expander part 17 if the fastening screw 16 is overtightened or pulled out, thus limiting its freedom of movement in the direction of the axial end of the fastening screw 16.
[0064] Overall, the adapter according to the invention thus enables a particularly secure yet quickly releasable fixing of a large number of individual road bike handlebar accessories. Reference list:
[0065] 1 bicycle handlebar
[0066] 2 racing bike handlebars, racing bike handlebars
[0067] 3a first longitudinal end
[0068] 3b second longitudinal end
[0069] 4a first front
[0070] 4b second front
[0071] 5 handlebar tube
[0072] 10 adapters
[0073] 11 first coupling part
[0074] 12 second coupling part
[0075] 13 Handlebar accessory
[0076] 14 mirrors
[0077] 15 bells
[0078] 16 fastening screw
[0079] 16a Thread area
[0080] 16b Screw head area
[0081] 16c internal thread
[0082] 17 first expander part
[0083] 18 second expander part
[0084] 19. Recording, deepening
[0085] 20 bodies
[0086] 21 Sleeve
[0087] 22 first axial end region
[0088] 23 second axial end region
[0089] 30 Additional screw; coupling screw
[0090] 40 joint
[0091] 41 Ball head
[0092] 42nd entry
[0093] 50 Limiting disc
Claims
Patent claims:
1. Adapter (10), in particular bicycle handlebar adapter, in particular racing bike handlebar adapter, for attaching a handlebar accessory (13), such as a mirror (14) or a bell (15), to a bicycle handlebar (1), in particular a racing bike handlebar (2), with a first coupling part (11) that can be permanently attached to the bicycle handlebar (1) and a second coupling part (12) that can be coupled to the first coupling part (11) and is directly connected to the handlebar accessory (13), characterized by the fact that the adapter (10), in particular the first coupling part (11), can be attached to a longitudinal end (3a, 3b) of the bicycle handlebar (1), in particular the racing bike handlebar (2), in particular to an end face (4a, 4b) of the longitudinal end (3a, 3b) of the bicycle handlebar (1).
2. Adapter (10) according to claim 1, characterized in that the handlebar accessory (13) is a non-electrical component (14, 15).
3. Adapter (10) according to one of claims 1 or 2, characterized in that the adapter (10), in particular the first and second coupling part (11, 12), is designed as a quick-change adapter, so that the first coupling part (11) and the second coupling part (12) can be coupled to each other or detached from each other by hand, in particular without tools.
4. Adapter (10) according to one of the preceding claims, characterized in that a positive locking connection is provided for coupling the first coupling part (11) to the second coupling part (12).
5. Adapter (10) according to one of the preceding claims, characterized in that the adapter is designed as a ball joint, wherein one of the first and second coupling part has a ball head and the other of the first and second coupling part has an expandable receptacle, and for coupling the first and second coupling part, the other of the first and second coupling part with the expandable receptacle can be attached or clipped onto the ball head of one of the first and second coupling part, and for decoupling the first and second coupling part, the other of the first and second coupling part with the expandable receptacle can be removed from the ball head of one of the first and second coupling part, in particular without tools.
6. Adapter (10) according to one of the preceding claims, characterized in that a translational plug connection and / or a rotary lock, in particular a bayonet lock, is provided for coupling the first coupling part (11) to the second coupling part (12).
7. Adapter (10) according to one of the preceding claims, characterized in that a force-fit connection is provided for coupling the first coupling part (11) to the second coupling part (12), in particular a friction-fit and / or magnetic connection.
8. Adapter (10) according to one of the preceding claims, characterized in that the first coupling part (11) has a substantially cylindrical body (20).
9. Adapter (10) according to one of the preceding claims, characterized in that a fastening screw (16) extending axially through the first coupling part (11) is provided for fastening the first coupling part (11) to the bicycle handlebar (1).
10. Adapter (10) according to claim 9, characterized in that the fastening screw (16) has a threaded area and a screw head area, and the fastening screw (16) has, in the screw head area, in particular at the end face of the fastening screw (16), an internal thread extending axially into the screw head area for receiving an additional screw, in particular a coupling screw for coupling the second coupling part (12) to the first coupling part (11), arranged in particular coaxially to the fastening screw (16).
11. Adapter (10) according to one of the preceding claims, characterized in that, for fastening the first coupling part (11) to the bicycle handlebar (1), the first coupling part (11) has an axial sleeve (21) with two interconnected expander parts (17, 18) arranged at least partially therein for expanding the sleeve (21).
12. Adapter (10) according to claim 11, characterized in that a first expander part (17) is arranged at a first axial end region (22) of the sleeve (21) and a second expander part (18) is arranged at the opposite second axial end region (23) of the sleeve (21), and the two expander parts (17, 18) have inclined surfaces acting towards each other, so that when the expander parts (17, 18) are advanced towards each other, at least one of the expander parts (17, 18) is expanded with a section towards the radial outside or expands the sleeve (21) in a region with a section.
13. Adapter (10) according to one of claims 9 to 12, characterized in that, for fastening the first coupling part (11) to the bicycle handlebar (1), either the fastening screw (16) can be engaged with a thread arranged on the bicycle handlebar (1), or the fastening screw (16) is in operative connection with the two expander parts (17, 18), so that the expander parts (17, 18) can be moved towards each other and / or away from each other by means of the fastening screw (16).
14. Adapter (10) according to one of the preceding claims, characterized in that a joint (40), in particular a ball joint, and / or an additional second adapter is arranged between the second coupling part (12) and the handlebar accessory (13) for coupling and / or adjusting the handlebar accessory part (13).
15. Bicycle handlebar (1), in particular racing handlebar (2), with an adapter (10) arranged thereon having the features according to one of claims 1 to 14 or at least a first coupling part (11) having the features according to one of claims 1 to 14.
16. Bicycle, in particular racing bicycle, with a bicycle handlebar (1) according to claim 15.