DE9303684U1 - Bicycle and kit for equipping a bicycle - Google Patents

Description

t2/v/kt (3786F)

Klaus Menz

Bergerbreite 9

8000 Munich 81

Terry Luecke

Togostrasse 30

8000 Munich 82

Bicycle and kit for equipping a bicycle

The invention relates to a bicycle and a kit for equipping a bicycle according to the preamble of claim 1 or claim 2.

A generic bicycle and a generic kit for equipping a bicycle are known from US-PS 33 36 817. An elongated extension element is described there, the middle section of which is designed as a straight rod and the end sections of which extend perpendicularly to it, pointing in the same direction. One end section is designed as an adapter device that is attached in place of the normal bicycle handlebar in the clamping sleeve of the handlebar stem, which in turn is connected to the front wheel of the bicycle via the steering column in a rotationally fixed manner. The other end section of the extension element extends towards the upper body of the rider and serves as a fastening section for a circular spoked steering wheel. The kit described is therefore used to attach a steering wheel to the bicycle instead of a conventional bicycle handlebar. The elongated section of the extension element simultaneously allows the rider to sit in a more upright position. From this publication, a second embodiment is also known, in which the middle and upper sections of the

Extension element are designed as a straight rod, wherein the upper section serves as a fastening device for a spoked steering wheel. The lower end section of the extension element is hook-shaped, with the end running perpendicular to the longitudinal axis of the middle section. At this lower end of the extension element an adapter device is provided, which replaces the conventional handlebar stem and creates a rotationally fixed connection to the steering column of the bicycle front wheel. A problem with this known design is that the length of the extension element is fixed and thus it is not possible to adapt the kit to different sized drivers or to different upright sitting positions, unless by using several extension elements of different lengths, which then have to be purchased as accessories, with the corresponding costs. Furthermore, the use of a spoked steering wheel for bicycles is extremely impractical.

DE-PS 83 423 describes a shoulder support which, in addition to the conventional bicycle handlebars, serves to support the upper body and also involves the upper body in steering the bicycle. For this purpose, a second steering column tube is attached parallel to the steering column tube by means of a frame extension above the front wheel. A straight guide tube, which is rotatably mounted in this second steering column tube, extends from the front tire to the upper body of the driver, in which an extension rod is guided in an axially displaceable manner. The shoulder support is attached to the end of this extension rod pointing towards the driver. The extension rod, which can be moved axially in the guide tube, can be locked in various extension positions by means of a spring-loaded ratchet lock. The steering movements of the shoulder support are transferred to the conventional

Steering column of the front wheel of the bicycle. In this design, both the conventional bicycle handlebar and an additional shoulder support are attached to the bicycle. Since this requires a complex frame extension, this design is not suitable for retrofitting, it is very heavy and the bicycle handlebar can only be adjusted like on a conventional bicycle, so that an upright sitting position is only achieved to the extent that the bicycle handlebar can still be gripped.

Furthermore, DE-GM 88 13 345 proposes a handlebar stem whose handlebar base is extended to enable a more upright sitting position. The height of the bicycle handlebar can only be adjusted in the direction of the steering column.

In addition, for example, in DE-OS 39 08 064, a folding bicycle handlebar was proposed which is mounted in addition to the conventional bicycle handlebar and can be rotated around its axis running perpendicular to the bicycle. The folding construction is complex and leads to a comparatively large increase in the weight of the bicycle, since the second bicycle handlebar is constantly carried along. There is also the problem that brake handles are only located on the conventional bicycle handlebar, which is intended for a sporty sitting position. If the rider has folded up the second handlebar and is riding in an upright position, he must first reach from the upper to the lower bicycle handlebar to brake, which leads to a corresponding risk of accident.

It is the object of the invention to create a bicycle or a kit for equipping a bicycle, in which

Both an upright sitting position and a sporty sitting position for the driver can be easily achieved.

This object is achieved according to the invention by a bicycle having the features of claim 1 and by a kit for equipping a bicycle having the features of claim 2.

In the solution according to the invention, the ability to move the extension element in the direction of its longitudinal axis allows the bicycle handlebars to be easily adjusted from a sporty sitting position, in which the rider is bent far forward, to an upright sitting position. The bicycle handlebars can also be easily adjusted to suit riders of different sizes. The ability to move the extension element is achieved by mounting it on a receiving element, which in turn is connected to the steering column of the front wheel of the bicycle in a rotationally fixed manner via an adapter device. A locking device is used to securely fix the extension element in relation to the receiving element. The locking device can be easily released to quickly change the rider's sitting position.

The construction according to the invention requires very few, simple parts. This makes it inexpensive to manufacture and also only leads to a very small increase in the weight of the bicycle. Advantageously, the original bicycle handlebar can be attached to the fastening device at one end of the elongated extension element.

The adapter device makes it very easy to install the kit on the bike. The connection of the

The kit for the steering column of the bicycle's front wheel can be attached via the clamping sleeve of the handlebar stem or directly between the adapter device and the steering column, whereby the original handlebar stem of the bicycle is then not required.

In a favorable embodiment of the invention, the extension element is designed as a rod and the receiving element as a profile piece, whereby the rod can be inserted into the profile piece and the external cross section of the rod matches the internal cross section of the profile piece. In this case, the extension element is guided axially displaceably in the receiving element. The external cross section of the rod and the internal cross section of the profile piece must be adapted to one another in such a way that the extension element is clearly guided axially in the receiving element and the extension element is held securely in the direction transverse to its longitudinal axis. The extension element can be designed as a rod with a solid cross section of any profile, as an open profile or as a closed or slotted hollow profile. The receiving element must then have a matching profile that securely grips the extension element and guides it securely in the axial direction. This can be a closed or slotted hollow profile or an open profile.

In a preferred embodiment, the extension element is designed as a straight rod with a rectangular hollow profile. The receiving element is preferably also designed as a matching rectangular hollow profile. It is advantageous if both rectangular hollow profiles are closed, as this results in good torsional rigidity of the extension element around its longitudinal axis and also ensures that the extension element is securely mounted in the receiving element.

In another preferred embodiment, the extension element is designed as a profile and the receiving element as a rod piece, whereby the profile can be pushed onto the rod piece and the inner cross section of the profile matches the outer cross section of the rod piece. In this embodiment, the extension element surrounds the receiving element in such a way that it is clearly guided in the axial direction and securely mounted on the receiving element. The receiving element can be designed as a solid cross section with any profile as well as an open profile or a closed or slotted hollow cross section, while the extension element can be designed as an open profile or a slotted hollow profile, whereby the connection between the receiving element and the adapter device must be ensured through the extension element without impairing the axial displaceability of the extension element in relation to the receiving element.

In the two embodiments described, the extension element is guided on the outside of the receiving element and the extension element is guided inside the receiving element. It is expedient to design the extension element and the receiving element in such a way that they are rotationally fixed against each other around the longitudinal axis of the extension element. This can be advantageously achieved by selecting the profile design. For example, choosing a rectangular hollow profile for the extension element and a matching rectangular hollow profile for the receiving element automatically results in a rotationally secure connection of these two elements. If the rotational security is not ensured by the choice of the profile cross-sections, i.e. if the cross-sections are round, for example, it is advantageous to provide the rotational security by means of a tongue and groove connection between

Extension element and receiving element. The groove, running in the direction of the longitudinal axis of the extension element, can be provided in the receiving element and the corresponding spring in the extension element, or vice versa. Likewise, spline-like connections can also be used.

Furthermore, it is advantageous to provide a cast coating or a sliding insert on the receiving element, at least in sections, on the surface that rests on the extension element when pushed together. Such a coating or such an insert, e.g. made of plastic, prevents scratches on the extension element from occurring when the extension element is moved relative to the receiving element. This applies in particular to the design in which the extension element is guided within the receiving element and in the event that the surface of the extension element is provided with a varnish or other coating.

In a further expedient embodiment of the invention, the previously described embodiments of the extension element and the receiving element are each made twice. In the embodiments described so far, the extension element runs above the front wheel when it is pushed in the direction of the front wheel. In contrast, in the embodiment in which two identical rods or profiles are arranged at an axially symmetrical distance and connected to one another and in which the receiving element also comprises two identical profile pieces or rod pieces arranged to match, the two rods or profiles of the extension element extend to the right and left of the front wheel. This prevents overlaps of the

The extension element is prevented from coming into contact with the front tire and it is also avoided that the light area of the bicycle lamp is covered by the extension element. However, in the version with a one-piece extension element, the rod or profile is arranged in such a way relative to the front tire that the front tire does not come into contact even when the extension element is pushed in as far as it will go towards the front tire. This is achieved by a corresponding inclination of the extension element in the plane of the bicycle. In the version with an extension element made up of two rods or profiles and a receiving element made up of two profile pieces or rod pieces, the previously described preferred versions with regard to the profile cross-section, such as the rectangular hollow profile, with regard to the version as a straight rod or profile and with regard to an anti-twist device and corresponding sliding coatings or sliding inserts can also be implemented.

In a further advantageous embodiment, the extension element consists of hollow profile sections that are rotationally fixed relative to the longitudinal axis of the extension element and can be telescopically pushed into one another. These hollow profile sections are preferably designed as straight rectangular hollow profiles. The advantage of the telescopic extension element is that the extension element takes up almost no space when its hollow profile sections are pushed into one another. This can be advantageous, for example, when transporting the bicycle with the kit assembled.

Preferably, an adjustment device is provided on the adapter device for adjusting the angular alignment of the receiving element around the bicycle transverse axis.

In this way, not only can the extension element be adjusted axially towards or away from the rider, but the extension element can also be pivoted around the bicycle's transverse axis and thus its inclination can be adjusted in the bicycle plane. This adjustment device is preferably implemented as a swivel joint between the receiving element and the adapter device in the event that the adapter device replaces the original handlebar stem and creates a direct connection to the steering column of the bicycle's front wheel. In the event that the adapter device is designed in such a way that it can be fastened in the clamping sleeve of the original handlebar stem, the adjustment option arises from the fact that the end section of the adapter device is cylindrical in shape so that it can be fastened in the clamping sleeve of the handlebar stem and can therefore be rotated around its cylindrical axis before it is tightened in the clamping sleeve. To securely fasten the adapter device in the clamping sleeve, it is advantageous to provide an expansion element in the end section of the adapter device, with which the outer surfaces of the end section can be clamped into the clamping sleeve. This ensures a secure connection, regardless of the clamping screw attached to the clamping sleeve. This is particularly important if the clamping screw of the clamping sleeve is no longer accessible when assembling the kit.

Preferably, the locking device for releasably fixing the extension element in relation to the receiving element is designed as a clamping device. In particular, it is advantageous to design the receiving element as a clamping sleeve, which is tightened or loosened, for example, with a conventional quick-release device. Another advantageous embodiment consists in

The locking device should be designed as a locking device. There are a number of conceivable options for the structural design of such a clamping or locking device. The extension element can be designed as a rack that works together with a gear wheel to achieve the axial adjustment and fixation of the extension element. The extension element can also be provided with locking holes into which a locking pawl attached to the receiving element engages. The extension element can also be fixed using a clamping screw that is attached to the receiving element. Continuous locking holes can also be arranged in the extension element, which work together with a bolt, for example.

As already described above, a wide variety of profile designs can be used for the extension element and the receiving element. In particular, rectangular, round or oval basic shapes are useful in order to reduce any risk of injury and to achieve a uniform appearance with the other components of the bicycle. When choosing the profile cross-sections, the criterion of bending and torsional rigidity is of course also of great importance in order to achieve a stable, easily steerable overall construction of the bicycle.

The individual parts of the kit can be made of metal, light metal, plastic, fiber-reinforced plastic and the like. When using metal or light metal, the connections between individual components of the kit can be made by welding in a way that is more cost-effective in terms of production. When made from metal or plastic materials, components of the kit can also be made in one piece using a casting process.

It should also be noted that devices for attaching, for example, a bicycle lamp, a luggage bag or the like can be arranged on the receiving element and/or on the adapter device.

In the following, exemplary embodiments of the invention are explained in more detail with reference to the accompanying drawings.

Show it:

Fig. 1 First embodiment of the bicycle according to the invention with rider in perspective view;

Fig. 2 First embodiment of the kit according to the invention, as mounted on the bicycle according to Fig. 1, in perspective view;

Fig. 3 Bicycle according to Fig. 1 in simplified color position and without rider in side view;

Fig. 4 Bicycle according to Fig. 3 with rider;

Fig. 5 Bicycle according to Fig. 3 with brake Bowden cables and extension element in lowest position;

Fig. 6 Second embodiment of the kit according to the invention without extension element and without locking device in perspective view;

Fig. 7 Third embodiment of the kit according to the invention without extension element and without locking device in perspective view;

Fig. 8 Sliding insert for the embodiments according to Fig. 6 or Fig. 7 in perspective view;

Fig. 9 Fourth embodiment of the kit according to the invention without extension element in perspective view;

Fig. 10 Extension element for the embodiment according to Fig. 9 in perspective view;

Fig. 11 Cross section through extension element according to Fig. 10;

Fig. 12a Kit according to Fig. 2 without extension element in a side view;

Fig. 12b Kit according to Fig. 12a (seen from the left in Fig. 12a);

Fig. 12c Kit according to Fig. 12a (seen from above in Fig. 12a);

Fig. 12d Kit according to Fig. 12a (seen from below in Fig. 12a);

Fig. 12e Kit according to Fig. 12a (seen from behind in Fig. 12a);

Fig. 13 Sliding insert for the embodiment according to Fig. 12a in perspective view;

Fig. 14 Assembly of the kit according to the invention according to Fig. 2 without extension element on a bicycle handlebar stem in a perspective view;

Fig. 15 Perspective exploded view of the clamping device according to Fig. 7 or Fig. 9.

Fig. 1 shows a bicycle 15 with a first embodiment of the kit 1 according to the invention. In a conventional manner, the front wheel 12 is connected to the handlebar stem in a rotationally fixed manner via the front wheel fork 11 and the steering column mounted in the steering column tube 10. The adapter device 4 of the kit is attached to the clamping sleeve located at the free end of the handlebar stem 9, in which the original bicycle handlebar is normally attached. The receiving element 3, which, as can also be seen in Fig. 2, is designed as a straight profile piece with a closed rectangular hollow cross-section, is firmly connected to the adapter device 4. As Fig. 1 in conjunction with Fig. 2 further shows, the extension element 2 is designed as a straight profile with a closed rectangular cross-section. The extension element 2 is guided axially displaceably in the receiving element 3 and is fixed in its axial position by the locking device 5. At the end of the extension element facing the rider, a fastening device 6 in the form of a conventional clamping sleeve is attached, as is also attached to the free end of a handlebar stem 9 for fastening a bicycle handlebar. A conventional bicycle handlebar 8, e.g. the original bicycle handlebar, is attached in the clamping sleeve 6 of the extension element 2.

As shown in Fig. 1, the extension element 2 extends towards the upper body of the rider so that he assumes an upright, comfortable sitting position. At the end of the extension element 2 that faces the front wheel 12, a closure plug 14 is attached to close the open end of the hollow profile. Fig. 2 also shows a sliding insert 37, which is made of nylon or

another plastic and is inserted into the receiving element 3 to form a soft sliding surface for moving the extension element 2. Since the extension element 2 and the receiving element 3 are made of metal or light metal, for example, scratches on the outer surface of the extension element 2 are avoided by the sliding insert 37. The kit is preferably made of a weldable metal or light metal, so that the connections between the individual components can be made by welding. Components of the kit can also be made in one piece using a casting process.

Fig. 3 shows how the extension element 2 is arranged at an angle in the plane of the bicycle 15 in such a way that the bicycle handlebar 8 is in a much higher position than on conventional bicycles and is much closer to the rider's upper body. This is also clear from Fig. 4. Furthermore, arrows in Fig. 4 indicate how the bicycle handlebar 8 can be swiveled up or down by means of the extension element 2 around the end of the adapter device 4 (see Fig. 14) that is rotatably inserted in the handlebar stem 9 in order to set a position that is comfortable for the rider. In addition, the bicycle handlebar 8 can be moved together with the extension element 2 in its axial direction, as shown by arrows in Fig. 5. In Fig. 5, the brake Bowden cables 16 are also shown, which are moved accordingly when the extension element 2 is moved. The position of the extension element 2 shown in dashed lines in Fig. 5 corresponds to the position that is pulled out as far as possible towards the rider, while the position of the extension element 2 shown in solid lines corresponds to the position of the bicycle handlebar 8 that is pushed away from the rider as far as possible.

As can be seen from Fig. 4 and 5, the bicycle handlebar 8 can be swiveled with the extension element 2 around an axis parallel to the bicycle's transverse axis in order to set a desired handlebar position, and can therefore also be moved in the direction of the longitudinal axis of the extension element 2. When the desired handlebar position has been found, both the adapter device 4 is fixed to the handlebar stem 9 and the extension element 2 is fixed to the receiving element 3. The bicycle handlebar 8 can therefore easily be brought into a high position, set back towards the bicycle's rear wheel 13, which enables the rider to sit upright (Fig. 4), and into a low position close to the front wheel 12, in which the rider assumes a sporty, forward-leaning sitting position (Fig. 5). Of course, any intermediate position of the bicycle handlebar 8 can also be set. Once the kit is assembled, all that is required to adjust the bicycle handlebar position is to loosen and then tighten the fixation of the adapter device 4 on the handlebar stem 9 and/or the locking device 5 between the extension element 2 and the receiving element 3.

A second embodiment of the kit according to the invention is shown in Fig. 6. The extension element 2 shown in Fig. 2 can be used as an extension element, which is not shown in this figure, and can be inserted into the receiving element 3. The receiving element 3 is provided with two eyelets 21, which are attached on either side of a slot 27, so that the two eyelets can be tightened towards one another using a clamping device (not shown), whereby the receiving element 3 is clamped onto the extension element 2 which is guided through it, since the profile of the receiving element 3 rests on the slot 27.

is pressed together. A conventional quick-release device can be used as a clamping device to clamp the profile sections of the receiving element 3 against each other at the slot 27, as is shown, for example, in Fig. 9 or Fig. 12a with the reference number 5 and is known for various applications on bicycles. A joint bracket 23 is arranged on the receiving element 3, which in cooperation with a joint fork 22 and a joint bolt 40 forms a joint that makes it possible to pivot the receiving element 3 relative to the adapter device 4 about the axis of the joint bolt 40, which runs parallel to the transverse axis of the bicycle when the kit is assembled. When the angular position of the receiving element 3 and thus of the bicycle handlebar 8 connected via the extension element 2 is fixed by pivoting, as indicated by arrows in Fig. 4, the hinge pin 40 is tightened so that the desired angular position of the receiving element 3 remains fixed. The extension element 2 can then be adjusted by moving it along its longitudinal axis relative to the receiving element 3, as indicated by arrows in Fig. 5, with the clamping device on the receiving element 3 then being tightened to fix the extension element 2 in its position. In the second embodiment according to Fig. 6, the adapter device 4 is designed so that it replaces the original handlebar stem 9 of the bicycle 15 (see Fig. 1). Therefore, the adapter device 4 comprises a stem element 25, which corresponds in its geometry to a conventional handlebar stem 9 and is connected in a known manner to the bicycle steering column in a rotationally fixed manner by means of a locking screw 24.

Fig. 7 shows a third embodiment of the kit according to the invention, in which a

Extension element 2, as shown in Fig. 2, is inserted into the receiving element 3. The design of the receiving element 3 with eyelets 21 and a slot 27 corresponds to the embodiment as described in connection with Fig. 6. However, while the adapter device 4 in the second embodiment according to Fig. 6 consists of a connecting joint and a front element, the adapter device 4 in the third embodiment according to Fig. 7 consists of a tab 17 firmly connected to the receiving element 3 and a clamping device which is firmly attached to the tab 17.

The clamping device consists of a clamping sleeve 18, a cone 19 inserted coaxially into it and a locking screw 20, as can be seen in Fig. 15. The clamping sleeve 18 has several longitudinal slots so that the circumferential sections located between the longitudinal slots spread outwards when the cone 19 is clamped against the clamping sleeve 18 by means of the locking screw 20. Supported by a ribbing on the outer circumference of the clamping sleeve 18, the clamping device can thus be clamped into a clamping sleeve 38, as is attached to a conventional handlebar stem 9 of a bicycle 15 (see Fig. 14). Before tightening the locking screw 20 and thus determining the angular position of the receiving element 3 relative to the clamping sleeve 38, the receiving element 3 is pivoted into the desired position about the longitudinal axis of the clamping device, which then runs parallel to the transverse axis of the bicycle.

In the second embodiment according to Fig. 6, the kit is connected directly to the bicycle steering column, while in the third embodiment according to Fig. 7 and in the first embodiment according to Fig. 2, a connection is formed to the handlebar stem 9, which

is in turn directly connected to the bicycle steering column. In this way, in both cases, the steering movement that the driver performs with the bicycle handlebars is transmitted in a rotationally fixed manner to the bicycle steering column and thus to the front wheel 12. Of course, the articulated connection between the receiving element 3 and the adapter device 4 according to Fig. 6 can also be solved in a different way that allows pivoting about an axis parallel to the transverse axis of the bicycle. Likewise, the clamping device according to Fig. 7 can be solved differently in its technical design.

In Fig. 8, a sliding insert 7 is shown, which is made of plastic, for example, and is inserted into the receiving element 3 according to Fig. 6 or Fig. 7 in order to form a good sliding surface and to avoid damage to the surface of the extension element. The sliding insert 7 has two protruding edge sections 41, by means of which the sliding insert is secured against slipping out of the receiving element 3 on both open sides. The sliding insert 7 is inserted in such a way that its longitudinal slot coincides with the slot 27 of the receiving element. To insert the sliding insert 7 into the receiving element 3, the slotted end of the sliding insert is pressed together so that after insertion, the edge section 41 located at this end snaps outwards again and fixes the sliding insert.

The fourth embodiment shown in Fig. 9 corresponds in its basic design to the third embodiment according to Fig. 7. Now only the receiving element 33 is designed as a pipe section with a circular cross-section. Accordingly, the extension element 32 is also provided with a circular pipe cross-section, as shown in Fig. 10. In order to ensure a secure, rotationally fixed connection

In order to ensure a secure connection between the receiving element 33 and the extension element 32, a rib 28 running in the direction of the longitudinal axis is provided on the inner surface of the receiving element 33, which rib interacts with a matching longitudinal groove 30 on the outer circumference of the receiving element 32 as a tongue and groove connection. The fastening device 6 serves, as in the first embodiment of the extension element shown in Fig. 2, to attach the bicycle handlebar 8. In Fig. 9, the parts designed according to Fig. 6 and Fig. 7 are provided with the same reference numerals. A quick-release device 5 of known design with a quick-release bracket 26 and a clamping bolt 29 serves to clamp the receiving element 33 onto the extension element 32 in order to fix them axially against one another. Thanks to the quick-release device 5, this fixation can be quickly released and just as quickly restored to a different position, so that adjustment can be made quickly, conveniently and without the use of tools.

In Fig. 11, the clamping screw 31 can be seen, with which the clamping sleeve 6 is tightened to fix the bicycle handlebar 8.

Fig. 12a to 12e show elevational views of the first embodiment of the kit according to the invention, as shown in Fig. 2 complete with the extension element 2. This first embodiment corresponds essentially to the third embodiment according to Fig. 7, whereby only in the first embodiment the device 20, 35 for fastening the adapter to the handlebar stem is designed differently and the geometric design of the eyelets 21 and the slot 27 is different, whereby a locking opening 34 is also provided. The device shown in Fig. 13

Sliding insert 37 is provided with a locking knob 36, which snaps into the locking opening 34 for axial fixing of the sliding insert in the receiving element 3. The clamping device 35 is formed from two clamping sleeve halves 35, which are mounted on a
lying on top of each other in an inclined plane and through the
The locking screw 20 is used to hold the
Tightening the locking screw 20 causes one clamping sleeve half 35 to move along this inclined plane relative to
the other.

Fig. 14 shows schematically how the kit according to the first, third or fourth embodiment is arranged along the
dashed line into a clamping sleeve 38 of a
handlebar stem 9 and then fixed in place by tightening the locking screw 20. In addition, the clamping screw 39 can be tightened, which
is usually provided on the clamping sleeve 38. The
The kit can also be designed so that the
Adapter device 4 instead of a clamping device (18, 19, 20 or 20, 35) only a cylindrical section
which fits into the clamping sleeve 38. Then the
The kit is fixed in the clamping sleeve 38 only by tightening the clamping screw 39. However, since this is not possible with some
Bicycles the problem occurs that the clamping screw 39
is no longer accessible after the kit has been installed,
In order to fix the kit in the clamping sleeve 38, in the embodiments shown on the kit itself a
A clamping device is provided which can be easily tightened even after the kit has been inserted into a clamping sleeve 38.
This also prevents the
with repeated assembly and disassembly of the kit, the
Clamping screw 39 wears out or its thread is damaged, so that a secure attachment of the kit is no longer possible
would be guaranteed.

It should also be noted that the embodiments shown can of course be combined with one another or otherwise varied. In particular, the embodiment according to Fig. 6 can be varied by using instead of a receiving element 3 with a rectangular hollow cross-section, one with a round hollow cross-section, e.g. according to Fig. 9. It is also conceivable to dispense with the joint between the receiving element 3 and the front element 25, as shown in Fig. 6, and instead to produce a fixed connection, e.g. by welding, in a predetermined angular arrangement.

Claims (16)

Protection claims 1. Bicycle with a front wheel (12) and at least one rear wheel (13), with a steering column connected to a front fork (11), a steering column connected
Adapter device (4), an elongated extension element (2; 32) connected to the adapter device (4),
at one end of which a fastening device (6) is arranged to which a bicycle handlebar (8) is attached,
characterized, that the adapter device (4) is a
Receiving element (3; 33) for storing the
extension element (2; 32),
that the extension element (2; 32) in the direction of its longitudinal axis relative to the
Receiving element (3; 33) is displaceable and
that a locking device (5) for releasable
Fixing the extension element (2; 32) in
with respect to the receiving element (3; 33). 2. Kit for equipping a bicycle according to claim 1, with an adapter device (4) for establishing a connection of the kit to the steering column of the
Bicycle front wheel (12) and an elongated extension element (2; 32), at one end of which a fastening device (6) for a bicycle handlebar (8) is arranged, characterized in that a receiving element (3; 33) connected to the adapter device (4) is provided for mounting the extension element (2; 32), that the extension element (2; 32) is displaceable in the direction of its longitudinal axis relative to the receiving element (3; 33) and that a locking device (5) is provided for releasably fixing the extension element (2; 32) in relation to the receiving element (3; 33). 3. Kit according to claim 2, characterized
characterized in that the extension element (2; 32) is designed as a rod and the receiving element (3; 33) as a profile piece, wherein the rod can be inserted into the profile piece and the outer cross section of the rod matches the inner cross section of the profile piece. 4. Kit according to claim 2, characterized
characterized in that the extension element is designed as a profile and the receiving element as a rod piece, wherein the profile can be pushed onto the rod piece and the inner cross section of the profile matches the outer cross section of the rod piece. 5. Kit according to claim 3 or 4, characterized in that the extension element comprises two similar, rods or profiles arranged axially symmetrically at a distance and connected to one another and the receiving element comprises two identical, suitably arranged profile pieces or rod pieces. 6. Kit according to one of claims 3 to 5, characterized in that the extension element (2; 32) is designed as a straight rod or straight profile. 7. Kit according to one of claims 3 to 6, characterized in that the extension element is designed as a rectangular hollow profile (2). 8. Kit according to one of claims 3 to 7, characterized in that the extension element (2; 32) and the receiving element (3; 33) are designed to be rotationally fixed to one another around the longitudinal axis of the extension element. 9. Kit according to claim 8, characterized in that the torsion-resistant design is achieved by a tongue and groove connection (28, 30) between the extension element (32) and the receiving element (33). 10. Kit according to one of claims 3 to 9, characterized in that a sliding coating or a sliding insert (7; 37) is provided at least in sections on the receiving element (3; 33) on the surface which rests on the extension element (2; 32) when pushed together. 11. Kit according to claim 2, characterized in that the extension element consists of hollow profile sections which are rotationally fixed relative to one another about the longitudinal axis of the extension element and which can be telescopically pushed into one another. 12. Kit according to claim 11, characterized in that the hollow profile sections are designed as straight rectangular hollow profiles. 13. Kit according to one of claims 1 to 12, characterized in that an adjustment device (18; 35; 22, 23, 40) for adjusting the angular orientation of the receiving element (3; 33) around the transverse axis of the bicycle is provided on the adapter device (4). 14. Kit according to one of claims 1 to 13, characterized in that the locking device (5) is designed as a clamping device. 15. Kit according to claim 14, characterized in that the receiving element is designed as a clamping sleeve (3, 27; 33, 27). 16. Kit according to one of claims 1 to 15, characterized in that the locking device (5) is designed as a locking device.