Bicycle damper and bicycle

Abstract

The invention relates to a bicycle damper (1), in particular a bicycle handlebar damper on a handlebar stem (6) for the shock reduction of a bicycle handlebar receiving device (7) relative to a bicycle frame, comprising a first frame part (11) which faces the bicycle frame and a second frame part (12) which faces away from bicycle frame and faces the receiving device (7), wherein the first frame part (11) and the second frame part (12) are connected together by means of a damping device (2). The damping device (2) comprises a first lever arm (3a) and a second lever arm (3b), wherein the lever arms (3a, 3b) connect the first frame part (11) to the second frame part (12), each lever arm is pivotally mounted on the first frame part (11) and on the second frame part (12), and a deformable elastomer part (4) is arranged between the two lever arms (3a, 3b).

Description

[0001] Bicycle shock absorber and bicycle

[0002] The invention relates to a bicycle damper, in particular a bicycle handlebar damper on a handlebar stem for reducing the impact of a bicycle handlebar mounting device, also called a handlebar clamp, relative to a bicycle frame. The damper comprises a first frame part facing the bicycle frame and a second frame part facing away from the bicycle frame and toward the mounting device. The first frame part and the second frame part are connected to one another by a damping device. Furthermore, the invention relates to a bicycle with such a bicycle damper.

[0003] Such bicycle dampers are known in various variants. In particular, dampers are known that provide wrist comfort through spring-based systems. Furthermore, mechanical, particularly springless, damping systems are known, as is also the case with the present invention. Such dampers are often arranged in a substantially horizontally oriented handlebar stem, which is usually arranged as a connection between a bicycle frame and a handlebar. They serve, in particular, to absorb shocks that are transmitted from the front wheel through the frame to the handlebars, where they can impact the rider's hands.

[0004] Such damping devices typically comprise a first frame part facing the bicycle frame and a second frame part facing away from the bicycle frame or toward the handlebars. The first frame part and the second frame part can be connected to each other exclusively by the damping device.

[0005] It has been shown that with such dampers, when the damped components, especially a component in contact with the rider such as the handlebars, immerse themselves, in addition to the shock-absorbing effect, a lateral displacement of the damped component occurs, particularly forwards or backwards in the direction of travel of the bicycle. This is often accompanied by a slight twisting of the damped component. However, this can lead to an unwanted change in the distance between the upper body and the handlebars or to an unwanted twisting of the hands on the handlebars. Furthermore, most known damping systems are relatively bulky and open, usually also associated with a considerable weight and a corresponding risk of injury. Such dampers often change the overall aesthetic impression of the handlebars and sometimes of the entire bicycle.

[0006] The object of the present invention is to provide a bicycle damper which improves at least one of the above-mentioned disadvantages and in particular enables safe and comfortable damping with the lowest possible weight, low air resistance and a visually appealing appearance on the bicycle.

[0007] The invention solves the stated problem by a bicycle damper having the features of the main claim and by a bicycle according to claim 22. Advantageous embodiments and further developments of the invention are disclosed in the subclaims, the description and the figures.

[0008] According to the invention, the damping device comprises a first lever arm and a second lever arm, wherein the lever arms connect the first frame part to the second frame part and are pivotally mounted on the first frame part and the second frame part, respectively. A deformable elastomer part is arranged between the two lever arms. As a result, in the event of an impact to be absorbed, the forces transmitted via the lever arms can be at least partially absorbed and thus dampened by the elastomer part located between the lever arms.

[0009] The first frame part and the second frame part can in particular be connected to one another exclusively by the two lever arms. In this case, a lever arm is understood to be a beam or cuboid-shaped solid body which is articulated at its two distal ends, in this case on the first and second frame parts. The lever arms in particular define a distance or gap between the two frame parts and guide the latter two towards one another in the event of an impact and the associated immersion of the damper system. The articulated connection of the lever arms to the frame parts can be achieved, for example, by means of a bolt or screw connection. For this purpose, the lever arms preferably each have four individual plain bearings which mount the lever arms relative to the bolt or screw connection.The lever arms are preferably arranged one above the other—in a typical upright bicycle—so that the first lever arm can also be referred to as the upper lever arm, and the second lever arm located below it can also be referred to as the lower lever arm. The bolts or screws of the joint connection preferably extend horizontally or parallel to the longitudinal extension of a handlebar. The elastomer part is arranged between the upper and lower lever arms.

[0010] The elastomer part can be located in an undamped state with a certain amount of play between the lever arms and can be reversibly compressed by the lever arms upon impact. In this case, the elastomer part is understood to mean, in particular, a reversibly deformable, elastic body. The elastomer part serves as a damping element, in particular for braking, guiding, and limiting the movement of the lever arms relative to the first and / or second frame part. It can be provided that the damping effect is adjustable by selecting the elastomer material, in particular a hard or soft elastomer part.

[0011] The lever arms are preferably arranged at an angle to one another, in particular non-parallel to one another. This makes it possible to move the first frame part relative to the second frame part in a substantially rectilinear trajectory when the lever arms are pivoted, in particular without a significant offset in the direction of the longitudinal extension of the lever arms.

[0012] Preferably, the lever arms are not of equal length. The two lever arms are advantageously designed to be different lengths; in particular, the lower lever arm can be longer than the upper lever arm. This allows for damping with a very small offset by actively rotating the second frame part to compensate for the resulting twisting of the handlebar.

[0013] In a preferred embodiment of the invention, the lever arms, at least in an undamped state, are each arranged longitudinally substantially perpendicular to a handlebar axis, which is defined by the receiving device and along which a handlebar extends, and almost parallel to the longitudinal extent of the handlebar stem. This makes it possible to achieve a particularly linear damping effect between the first frame part and the second frame part, so that the rider does not experience any forward or backward displacement or twisting of the hands when the damped components dip.

[0014] Particularly preferably, a pivot center is defined on the pivotable mounting of the lever arm on the frame part, wherein all pivot centers are arranged vertically and / or horizontally spaced from one another, at least in an undamped state. This means that each pivot center has a different distance from a fictitious, common vertical and / or horizontal line that intersects the respective pivot center.

[0015] Advantageously, the first lever arm has a first recess on a side facing the second lever arm and / or the second lever arm has a second recess on a side facing the first lever arm, wherein the elastomer part rests against the respective lever arm in at least one of the recesses. Such a recess does not necessarily have to originate from a flat surface, but can also be formed by the shape of the lever arm itself. The recesses of the lever arms can be designed and / or arranged relative to one another in such a way that the elastomer part can rest essentially flat and / or flush against both lever arms. This enables particularly effective force transmission.

[0016] In a preferred embodiment, the recesses together form a particularly wedge-shaped guideway or surface for guiding the elastomer part during an impact, whereby the elastomer part can be displaced and deformed by the wedge-shaped guide surface during a damping process. The relatively large contact surface between the lever arms and the elastomer part enables particularly effective force transmission, so that, in particular, a component digging or cutting into the elastomer part can be effectively prevented.

[0017] Particularly preferably, the recesses each have a shape corresponding to the elastomer part, in particular a corresponding negative shape. For example, a convex outer contour formed on the elastomer part can be accommodated by a corresponding concave negative contour in the region of the recess. This can increase the contact surface and improve force transmission, as mentioned above.

[0018] According to one embodiment of the invention, at least one of the lever arms can be designed in two parts, in particular with a first arm part and a second arm part. In particular, each lever arm can have a first arm part and a second arm part, each also called a spreading element. The arm parts can generally be arranged such that they form only an outer part of the damping device and in particular are not firmly connected to an inner part. By using the plain bearings, both arm parts can nevertheless be guided towards one another. The first arm part is preferably designed as a body which extends over an outer and an inner part of the damping device, in particular over approximately 2 / 3 of the total width of the damping device. The second arm part is preferably formed by a comparatively small, in particular narrow body, which is preferably arranged only in the lateral outer region of the damping device.This allows the lever arm to be mounted in a particularly simple manner. Particularly preferably, the two arm parts can be displaced relative to one another by means of a screw, in particular by means of a grub screw, in particular in a direction parallel to an axis which is defined by the receiving device and in which a handlebar extends. In order to displace the first arm part relative to the second arm part, the grub screw can be operatively connected to one of the first arm part and the second arm part via a thread and can bear against the other of the first arm part and the second arm part with a front end region. Particularly preferably, the front end region of the screw is at least partially inserted into a recess or bore in the other of the first arm part and the second arm part. This enables the screw to be guided or the first arm part to be held relative to the second arm part.When the grub screw is turned, it can lock with the other end of the first arm section and the second arm section, forcing the arm sections apart. This creates a preload that can effectively prevent play in the damping device. In particular, tolerances can be compensated, bearings preloaded, and ultimately play in the steering can be prevented.

[0019] Tests have shown that one of the best shapes for the elastomer part is a cuboid shape, particularly a slightly skewed cuboid shape. The skewed cuboid shape, in particular, avoids a gap between the lever arm and the elastomer and allows for stronger forces to be absorbed in one direction than in a perpendicular direction. The elastomer part is therefore preferably designed as a cuboid component, particularly with a skewed cuboid shape.

[0020] Particularly preferably, the cuboid-shaped elastomer part is arranged longitudinally perpendicular to the longitudinal extension of the handlebar stem. This allows impact forces from the bicycle frame toward the handlebars to be dampened particularly effectively. Furthermore, the damping device can be designed to be particularly lightweight and space-saving, requiring particularly little installation space. Preferably, the elastomer part is arranged in a form-fitting manner between the two lever arms and, particularly preferably, is held exclusively by the two lever arms. This enables a particularly compact design.

[0021] The elastomer part preferably additionally has at least one form-fitting part, which engages in a form-fitting manner with a corresponding form-fitting part formed on or by the lever arm. This allows the elastomer part to be held in position particularly effectively and / or returned to a basic position after a damping process, in particular after displacement or compression. The form-fitting part can be designed, for example, as a pin or shoulder protruding from the outer contour on a side of the elastomer part facing the lever arm, in particular the center of the lever arm, which is inserted into a recess or bore formed on the lever arm. This enables permanent and reliable damping.

[0022] According to an alternative embodiment of the invention, the elastomer part is constructed in two or more parts, in particular with at least a first elastomer element and a second elastomer element. The elastomer elements can be of identical construction. In this variant, the elastomer elements are preferably arranged laterally next to one another, in particular in the direction of the longitudinal extent of the handlebar. Thus, there can be an elastomer element on the left in the direction of travel of the bicycle and a elastomer element on the right. Furthermore, the elastomer elements can be arranged at a distance from one another, so that a free space is formed between the two elastomer elements, through which a fastening screw for fixing the two lever arms to one another can extend. The fastening screw can be operatively connected to one of the lever arms via a thread and to the other via the screw head. This enables particularly simple assembly.

[0023] Preferably, the damping device is surrounded by an elastic sleeve, in particular on at least four sides. The sleeve can, in particular, completely shield the damping device from the environment. This enables a particularly safe and low-maintenance damping device. Furthermore, there is a lower risk of injury to a rider compared to conventional dampers. When installed, the outer contour of the sleeve preferably matches the outer contour of the first and second frame parts, so that the damping device is not immediately visible from the outside, resulting in a visually appealing appearance, in particular like a stem without a damping device.

[0024] It is particularly advantageous if the sleeve can be positively secured to the first and second frame parts, i.e., if the sleeve has at least one positive-locking element for securing it to the first and second frame parts. This enables a particularly lightweight damping device.

[0025] Preferably, the cuff can be fastened to the first frame part and / or the second frame part with at least one fastening screw. Particularly preferably, the cuff has at least one recess through which a fastening screw extends for fastening to the first frame part and / or the second frame part. This ensures secure and permanent positioning of the cuff.

[0026] It can be provided that the sleeve is arranged so as to at least partially overlap the first frame part and / or the second frame part. This effectively prevents, for example, dirt from outside from entering the damping device.

[0027] Particularly preferably, the lever arms and the elastomer part are arranged in operative connection to one another in such a way that, under impact, the two frame parts are displaced relative to one another essentially perpendicular to the longitudinal extent of the lever arms and perpendicular to the longitudinal extent of the handlebar stem, and this displacement is dampened and limited by crushing and reversible deformation of the elastomer part between the lever arms. This not only achieves very pleasant and comfortable damping for the rider, but also ensures that the size and shape of the outer contours remain at least virtually unchanged even when the handlebar is submerged, in particular that they do not protrude significantly beyond the outer contours of the frame parts. This is particularly advantageous with regard to flow resistance. Further advantages arise in terms of a particularly attractive appearance of the handlebar stem.

[0028] Preferably, the receiving device or handlebar clamp defines an axis along which a handlebar designed as a bicycle handlebar extends. The lever arms and the elastomer part are arranged such that, upon impact, the second frame part and the handlebar arranged thereon are displaced relative to the first frame part essentially in a direction perpendicular to the axis. This can also be achieved by rotating the handlebar around the axis by an angle of less than 5°, preferably by a maximum of 3°. This enables particularly effective and comfortable shock absorption.

[0029] The invention further relates to a bicycle with a bicycle damper having the features of one of claims 1 to 21.

[0030] An exemplary embodiment of the invention is explained in more detail below with reference to the figures. Like reference numerals denote like components. They show schematically:

[0031] Figure 1a - a sectional view of a bicycle damper according to the invention in an undamped state;

[0032] Figure lb - a sectional view of the bicycle damper according to Fig.l in a damping state;

[0033] Figure 2 - a side view of the bicycle damper according to Fig.l without cuff in a damping state;

[0034] Figure 3a - a perspective detailed view of the lever arms of the bicycle damper according to Fig.l;

[0035] Figure 3b - a top view of the lever arms of the bicycle damper according to Fig. 1; Figure 4a - a perspective detailed view of the elastomer part of the bicycle damper according to Fig. 1;

[0036] Figure 4b - a perspective detail view of a two-part elastomer part; and

[0037] Figure 5 - a perspective detailed view of the cuff of the bicycle shock absorber according to Fig.l.

[0038] In Figures 1a and 1b, reference numeral 1 denotes a bicycle damper according to the invention, in particular a handlebar damper. The damper 1 serves to reduce a shock acting on a handlebar (not shown here), in particular to reduce the shock of a bicycle handlebar mounting device 7 relative to a bicycle frame (not shown in detail here). A handlebar stem 6 extends essentially horizontally from the bicycle frame (not shown in detail here). The handlebar stem 6 serves to mount the handlebar (not shown) and comprises, in particular, a first frame part 11 (shown in the left part of the image) facing the bicycle frame and a second frame part 12 facing the handlebar.

[0039] The first frame part 11 and the second frame part 12 are each designed as typical stem tubes in the present case. It should be clear that the frame parts 11, 12 can of course also have any other shape or cross-section. The first frame part 11 is designed as a component of the stem and is detachably connected to the bicycle frame (not shown in detail), in particular to a bicycle fork or fork shaft. The second frame part 12 has, at a distal end facing away from the first frame part 11, a handlebar mounting device 7, to which a handlebar can be mounted via a clampable front plate 22. The handlebar mounting device 7 and / or the handlebar (not shown) define an axis A1, which forms a transverse axis with respect to a bicycle, which is arranged in particular perpendicular to a straight-ahead travel of the bicycle.The first frame part 11 and the second frame part 12 have a substantially identical outer contour 14 and are arranged substantially parallel and in the same horizontal plane over a portion of their longitudinal extent (R2). However, the frame parts 11, 12 are not in direct contact with one another, but are arranged at a distance from one another. The end-to-end distance (in the axial direction R2) is approximately the same as the width of the frame part 11 or 12. In the aforementioned area, the two frame parts 11, 12 are connected to one another by the damping device 2. The damping device 2 has two lever arms 3a, 3b which connect the first frame part 11 to the second frame part 12.

[0040] The lever arms 3a, 3b are each arranged in their longitudinal extent substantially perpendicular to a longitudinal direction A1 of the handlebar (not shown). The lever arms 3a, 3b are arranged in their longitudinal extent at an angle to one another, in particular non-parallel to one another, in particular at an angle to the longitudinal direction R2 of the stem 6 between 0 and 10 degrees. In the present case, the lever arms are arranged one above the other, so that the first lever arm can also be referred to as the upper lever arm and the second lever arm arranged below it can also be referred to as the lower lever arm. The lever arms 3a, 3b are of different lengths in the present case; in particular, the upper lever arm 3a has a shorter length than the lower lever arm 3b. Furthermore, the lever arms 3a, 3b are each pivotably mounted on the first frame part 11 and on the second frame part 12.The articulated connection of the lever arms 3a, 3b to the frame parts 11, 12 can be achieved, in particular, by means of a bolt connection or screw connection. For this purpose, as shown in particular in Figures 3a and 3b, a total of four bolts 17 are provided for each lever arm 3a, 3b, which are mounted in eight plain bearings 23, so that the lever arms 3a, 3b can swing or rotate freely. Furthermore, the damping device 2 comprises a deformable elastomer part 4, which is arranged between the upper lever arm 11 and the lower lever arm 12.

[0041] The lever arms 3a, 3b are each formed in two parts. In particular, each lever arm 3a, 3b comprises a first arm part 25a, 25a' and a second arm part 25b, 25b'. The top view of the lever arm 3a shown in Figure 3b shows the first arm part 25a and the second arm part 25a', also called spreading elements. The first arm part 25a is formed by a comparatively much larger body, which extends over almost the entire width, preferably 2 / 3 of the width, of the damping device 2. The second arm part 25a' is formed by a comparatively small, in particular narrow body, which is arranged only in the lateral outer region of the damping device 2. The first arm part 25a and the second arm part 25a' are displaceable relative to one another. In the present case, the first arm part 25a and the second arm part 25a' are shown spaced apart from one another by a distance x.A grub screw 24 is provided for displacing the first arm part 25a relative to the second arm part 25a'. The grub screw 24 is operatively connected to one of the first arm part 25a and the second arm part 25a' via a thread and rests against the other of the first arm part 25a and the second arm part 25a' with a front end. When the grub screw 24 is turned, the second arm part 25a' can be pushed away from the first arm part 25a. To pull the second arm part 25a' toward the first arm part 25a, the latter can be preloaded relative to the second arm part 25a'. This arrangement can, in particular, compensate for tolerances, preload the bearings, and ultimately prevent play in the steering. The first lever arm 3a has a first recess 3a" on a side 3a' facing the second lever arm 3b and / or the second lever arm 3b has a second recess 3b" on a side 3b' facing the first lever arm 3a.The recess is defined by the shape of the lever arm 3a, 3b. The elastomer part 4 rests against both recesses 3a", 3b" on the lever arm 3a, 3b. To ensure full contact, the recesses 3a", 3b" have a negative shape corresponding to the elastomer part 4. To guide the elastomer part 4 during shock absorption, the recess 3a", 3b" has a suitable, particularly wedge-shaped, guide track or surface.

[0042] The elastomer part 4 is to be understood here as a reversibly deformable, in particular elastic component, which in this case serves as a damping element, in particular for braking and limiting a movement of the lever arms 3a, 3b relative to the first frame part 11 and / or the second frame part 12. As shown in Figure 4a, the elastomer part 4 is designed as a cuboid-shaped component and, as can be seen in Figures 1 to 3b, is arranged in a form-fitting manner between the first frame parts 11, 12 and in particular between the two lever arms 3a and 3b. For this purpose, the elastomer part 4 has two form-fitting elements 8, 9, which serve for fastening to the first and second lever arms 3a, 3b. In this case, the form-fitting elements 8, 9 are designed as two protruding pins. The pins 8, 9 can engage in a recess 15, 16 formed on the lever arm 3a, 3b.

[0043] Alternatively, the elastomer part 4 can also be constructed in two or more parts. A two-part design of the elastomer part 4 is shown as an example in Figure 4b. In particular, each elastomer part 4 can comprise a first elastomer element 4a and a second elastomer element 4b. The two elastomer elements 4a, 4b can have the same structure. Furthermore, the elastomer elements 4a, 4b are preferably arranged at a distance from one another, as shown in Figure 4b, so that a screw for fixing the two lever arms 3a, 3b to one another can extend through a free space provided between the two elastomer elements 4a, 4b. The screw is not shown in the figures, but can extend through the central opening or bore 15 in the first arm parts 25a, 25b, shown in Figures 3a and 3b. The screw extends in particular from the upper lever arm 3a to the lower lever arm 3b.In this case, the screw can rest with a head on the outside of the upper lever arm 3a and extend thread-free through the bore 15 and be in operative connection with the lower lever arm 3b in the bore 16 with a threaded section.

[0044] Additionally, a screwed-on preload element 26 is provided, which presses the second frame part 12 into the correct position and also preloads the elastomer part 4 such that no play occurs between the elastomer part 4 and the frame parts 11, 12, and the elastomer part 4 is secured against detachment or sinking. For this purpose, the preload element 26 rests flush with a side surface on the upper lever arm 3a. With the preload element 26, the damping device 2 can be reset and held in the undamped state 101 shown in Figure 1a, also called the basic position. Furthermore, upward spring travel and the associated possible unpleasant feeling when "lifting" the front wheel can be avoided. The elastomer part 4 and the lever arms 3a, 3b do not protrude from the outer contour 14 of the frame parts 11, 12. Figure 5 shows the elastic cuff 5 surrounding the damping device 2 on an outer side.The sleeve 5 is positively attached to the first and second frame parts 11, 12. For this purpose, the sleeve 5 has two positive-locking elements 18, 19, which serve for fastening to the first and second frame parts 11, 12. In the present case, the positive-locking elements 18, 19 are designed as two protruding shoulders. The shoulders 18, 19 rest against a shoulder corresponding to the first and second frame parts 11, 12. In addition, the sleeve 5 is fastened in the present case by means of two fastening screws 13 to the first frame part 11 and the second frame part 12, which are covered by a cover 10. For this purpose, the sleeve comprises two recesses 20, 21. In order in particular to prevent dirt from penetrating the damping device 1 and for a visually appealing appearance, the sleeve is arranged so that it at least partially overlaps the first frame part 11 and the second frame part 12.In the assembled state, the outer contour of the sleeve 5 corresponds to the outer contour 14 of the first and second frame parts 11, 12.

[0045] In Figure 1a, the system is shown in an undamped state 101. Here, the lever arms 3a, 3b are arranged almost parallel and almost horizontally.

[0046] Figure 1b shows a damping state 102 in which the handlebar support device 7 is displaced in the direction RI and rotated by a very small angle in the circumferential direction of the handlebar. The lever arms 3a, 3b are arranged non-parallel at an angle to the horizontal of approximately 45°. The lever arms 3a, 3b and the elastomer part 4 are operatively connected to one another in such a way that, upon impact loading, the two frame parts 11, 12 are displaced relative to one another essentially in the direction RI perpendicular to the longitudinal extension of the lever arms 3a, 3b and perpendicular to the longitudinal extension R2 of the handlebar stem 6, and this displacement is dampened and limited by crushing and reversible deformation of the elastomer part 4 between the lever arms 3a, 3b.The handlebar (not shown) is displaced relative to the first frame part 11 essentially in a direction RI perpendicular to the axis A1 and is additionally rotated by a preferred angle of 3° in the circumferential direction. Reference symbols:

[0047] 1 bicycle shock absorber

[0048] 2 Damping device

[0049] 3a lever arm

[0050] 3b lever arm

[0051] 3a' page

[0052] 3b' page

[0053] 3a" depression, negative contour

[0054] 3b" depression, negative contour

[0055] 4 Elastomer part

[0056] 4a first elastomer element

[0057] 4b second elastomer element

[0058] 5 cuff

[0059] 6 handlebar stem

[0060] 7 Mounting device, handlebar clamp

[0061] 8 Form-locking element, pin, heel

[0062] 9 Form-locking element, pin, heel

[0063] 10 cover covers

[0064] 11 first frame part

[0065] 12 second frame part

[0066] 13a Fixing screw

[0067] 13b Fixing screw

[0068] 14 Outer contour

[0069] 15 Form-locking element, recess, opening, bore

[0070] 16 Form-locking element, recess, opening, bore

[0071] 17 bolts

[0072] 18 Form-locking element, heel

[0073] 19 Form-locking element, paragraph

[0074] 20 recesses

[0075] 21 recesses

[0076] 22 Front panel

[0077] 23 plain bearings

[0078] 24 Grub screw 25a Arm part, expansion element

[0079] 25a' arm section, spreader element

[0080] 25b Armrest, spreader element

[0081] 25b' arm section, spreader element

[0082] 26 Preload element

[0083] 101 undamped state

[0084] 102 dampening state

[0085] Al axis

[0086] RI direction of movement

[0087] R2 Longitudinal direction handlebar

[0088] X distance

Claims

Patent claims:

1. Bicycle damper (1), in particular a bicycle handlebar damper on a handlebar stem (6) for reducing the shock of a bicycle handlebar receiving device (7) relative to a bicycle frame, with a first frame part (11) facing the bicycle frame and a second frame part (12) facing away from the bicycle frame and facing the receiving device (7), wherein the first frame part (11) and the second frame part (12) are connected to one another by a damping device (2), characterized in that the damping device (2) comprises a first lever arm (3a) and a second lever arm (3b), wherein the lever arms (3a, 3b) connect the first frame part (11) to the second frame part (12) and are each pivotally mounted on the first frame part (11) and on the second frame part (12), and a deformable elastomer part (4) is arranged between the two lever arms (3a, 3b).

2. Bicycle damper (1) according to claim 1, characterized in that the lever arms (3a, 3b) are arranged at an angle to one another, in particular non-parallel to one another.

3. Bicycle damper (1) according to one of claims 1 or 2, characterized in that the lever arms (3a, 3b) are not of the same length.

4. Bicycle damper (1) according to one of the preceding claims, characterized in that the lever arms (3a, 3b), at least in an undamped state (101), are each arranged in a longitudinal extension substantially perpendicular to an axis (A1) which is defined by the receiving device (7) and in which a handlebar extends, and substantially parallel to the longitudinal extension (RI) of the handlebar stem (6).

5. Bicycle damper (1) according to one of the preceding claims, characterized in that on the pivotable mounting of the lever arm (3a, 3b) a pivot center (Ml, M2, M3, M4) is defined on the frame part (11, 12) in each case, and all pivot centers (Ml, M2, M3, M4) are arranged vertically and / or horizontally spaced from one another at least in an undamped state (101).

6. Bicycle damper (1) according to one of the preceding claims, characterized in that the first lever arm (3a) has a first recess (3a") on a side (3a') facing the second lever arm (3b) and / or the second lever arm (3b) has a second recess (3b") on a side (3b') facing the first lever arm (3a), and the elastomer part (4) rests against the respective lever arm (3a, 3b) in at least one of the recesses (3a", 3b").

7. Bicycle damper (1) according to claim 6, characterized in that the recesses (3a", 3b") together form a, in particular wedge-shaped, guide track for guiding the elastomer part (4) in the event of an impact, in which the elastomer part (4) is arranged so as to be displaceable and deformable during a damping process.

8. Bicycle damper (1) according to one of claims 6 or 7, characterized in that the recesses (3a", 3b") each have a shape corresponding to the elastomer part (4), in particular a corresponding negative shape.

9. Bicycle damper (1) according to one of the preceding claims, characterized in that the lever arm (3a, 3b) is designed in two parts, in particular with a first arm part (25a, 25b) and a second arm part (25a', 25b').

10. Bicycle damper (1) according to claim 9, characterized in that the two arm parts (25a, 25a', 25b, 25b') are displaceable relative to one another by means of a screw (24), in particular in a direction parallel to an axis (Al) which is defined by the receiving device (7) and in which a handlebar extends.

11. Bicycle damper (1) according to one of the preceding claims, characterized in that the elastomer part (4) is designed as a cuboid-shaped component, in particular with a skewed cuboid shape.

12. Bicycle damper (1) according to claim 11, characterized in that the cuboid-shaped elastomer part (4) is arranged in its longitudinal extension perpendicular to the longitudinal extension (RI) of the handlebar stem (6).

13. Bicycle damper (1) according to one of the preceding claims, characterized in that the elastomer part (4) is arranged in a form-fitting manner between the two lever arms (3a, 3b) and, in particular, is held exclusively by the two lever arms (3a, 3b).

14. Bicycle damper (1) according to one of the preceding claims, characterized in that the elastomer part (4) has at least one form-fitting part (8, 9) which engages with a corresponding form-fitting part (15, 16) formed on or by the lever arm (3a, 3b), in particular on a side of the elastomer part (4) facing the lever arm (3a, 3b), in particular the center of the lever arm (3a, 3b), a pin (8, 9) or shoulder protruding from the outer contour is formed, which is inserted into a recess (15, 16) formed on the lever arm (3a, 3b).

15. Bicycle damper (1) according to one of the preceding claims, characterized in that the elastomer part (4) is formed in two or more parts, in particular with a first elastomer element (4a) and a second elastomer element (4b).

16. Bicycle damper (1) according to one of the preceding claims, characterized in that the damping device (2) is surrounded by an elastic sleeve (5), in particular on at least four sides.

17. Bicycle damper (1) according to claim 16, characterized in that the sleeve (5) is positively connected to the first and second frame part (11, 12). sig can be fastened, in particular has at least one form-fitting element (5) for fastening to the first and second frame part (11, 12).

18. Bicycle damper (1) according to one of claims 16 or 17, characterized in that the sleeve (5) can be fastened to the first frame part (11) and / or the second frame part (12) with at least one fastening screw (13), in particular has at least one recess through which a fastening screw for fastening to the first frame part (11) and / or the second frame part (12) extends.

19. Bicycle damper (1) according to one of claims 16 to 18, characterized in that the sleeve (5) is arranged at least partially overlapping with the first frame part (11) and / or the second frame part (12).

20. Bicycle damper (1) according to one of the preceding claims, characterized in that the lever arms (3a, 3b) and the elastomer part (4) are arranged in operative connection with one another in such a way that in the event of an impact load, the two frame parts (11, 12) are displaced relative to one another essentially in the direction (RI) perpendicular to the longitudinal extent of the lever arms (3a, 3b) and perpendicular to the longitudinal extent (R2) of the handlebar stem (6) and this displacement is dampened and limited by a squeezing and reversible deformation of the elastomer part (4) between the lever arms (3a, 3b).

21. Bicycle damper (1) according to one of the preceding claims, characterized in that the receiving device (7) defines an axis (Al) in which a handlebar extends, and the lever arms (3a, 3b) and the elastomer part (4) are arranged such that in the event of an impact load, the second frame part (12) and the handlebar arranged thereon are displaced relative to the first frame part (11) essentially in a direction (RI) perpendicular to the axis (Al), in particular additionally with a rotation by an angle of less than 5°, preferably by a maximum of 3°.

22. Bicycle with a bicycle damper (1) according to one of the preceding claims.

Images