Bicycle shock absorber and bicycle
By combining lever arms and elastic components, the problem of offset and torsion in bicycle shock absorbers during shock absorption is solved, achieving a lightweight, aesthetically pleasing, and comfortable shock absorption effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ROSS BICYCLES LLC
- Filing Date
- 2024-08-29
- Publication Date
- 2026-06-05
AI Technical Summary
Existing bicycle shock absorbers are prone to causing changes in the distance between the handlebars and the upper body or twisting of the hands when absorbing shocks. They are also bulky, heavy, and aesthetically unappealing.
The first frame component and the second frame component are connected by lever arms and deformable elastomer components. The force transmitted through the lever arms is partially absorbed in the elastomer components. The lever arms are designed with different lengths and angles to reduce offset and are wrapped with sleeves to maintain an aesthetic appearance.
It achieves safe and comfortable shock absorption with low weight and low air resistance, while maintaining the overall aesthetics of the handlebars and reducing the risk of injury to the rider.
Smart Images
Figure CN122161753A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a bicycle shock absorber, particularly a handlebar shock absorber on the handlebar stem for reducing the impact of a handlebar holder (also called a handlebar clamp) relative to the bicycle frame. It has a first frame member facing the bicycle frame and a second frame member facing away from the bicycle frame and towards the holder, wherein the first and second frame members are connected to each other by the shock absorber. The invention also relates to a bicycle having such a shock absorber. Background Technology
[0002] Different versions of such bicycle shock absorbers are known. In particular, shock absorbers are known to provide wrist comfort through spring-based systems. Furthermore, mechanical, and especially springless, shock absorption systems are known, and this invention also relates to such systems. These shock absorbers are typically arranged in a generally horizontally oriented handlebar stem, which is generally positioned as a connection between the bicycle frame and the handlebars. They are particularly used to absorb shocks transmitted from the front wheel through the frame to the handlebars and thus affect the rider's hands.
[0003] Such a shock-absorbing device typically includes a first frame component facing the bicycle frame and a second frame component facing away from the bicycle frame or towards the handlebars. Here, the first and second frame components may be connected to each other solely by the shock-absorbing device.
[0004] It has been shown that with such shock absorbers, when the damped components, especially those in contact with the rider such as the handlebars, are compressed, in addition to the shock absorption effect, the damped components will also shift laterally, particularly forward or backward in the direction of the bicycle's travel. This is usually accompanied by a slight torsion of the damped components. However, this can lead to undesirable changes in the distance between the upper body and the handlebars, or undesirable torsion of the hands resting on the handlebars. Furthermore, most known shock absorber systems are constructed to be relatively large and open, often accompanied by considerable weight and a corresponding risk of injury. Such shock absorbers often alter the overall aesthetics of the handlebars and the bicycle as a whole. Summary of the Invention
[0005] The object of the present invention is to provide a bicycle shock absorber that improves upon at least one of the aforementioned disadvantages, and in particular, enables safe and comfortable shock absorption on a bicycle with the lowest possible weight, low air resistance, and visually appealing appearance.
[0006] The present invention achieves the above-mentioned objective through a bicycle shock absorber having the features of the independent claim and a bicycle according to claim 22. Advantageous embodiments and variations of the invention are disclosed in the dependent claims, the description, and the drawings.
[0007] According to the present invention, the shock-absorbing device includes a first lever arm and a second lever arm, wherein the lever arms connect a first frame component and a second frame component and are rotatably supported on the first frame component and the second frame component, respectively, and a deformable elastomeric component is disposed between the two lever arms. Therefore, in the event of a need to absorb shock, the force transmitted via the lever arms can be at least partially absorbed by the elastomeric component located between the lever arms, thus achieving shock absorption.
[0008] The first and second frame components can be connected to each other, in particular, solely by the two lever arms. In this context, the lever arm should be understood as a beam or cuboid solid hinged at its two distal ends, hinged to the first and second frame components. The lever arm defines the distance or gap between the two frame components and guides them relative to each other in the event of an impact and the resulting compression of the shock absorber system. The hinged connection of the lever arm to the frame components can be accomplished, for example, by bolts or screws. For this purpose, the lever arm preferably has four individual sliding bearings supporting it relative to the bolts or screws. In a typical upright bicycle, the lever arms are preferably stacked, such 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 bolts or screws of the hinged connection preferably extend horizontally or parallel to the longitudinal extension of the handlebars. An elastomeric component is arranged between the upper and lower lever arms.
[0009] The elastomeric component can be in an undamped state, with a certain amount of clearance between the lever arms, and can be reversibly compressed by the lever arms upon impact. In the present context, the elastomeric component should be understood, in particular, as an elastic body capable of reversible deformation. In the present context, the elastomeric component serves as a damping element, particularly for braking, guiding, and limiting the movement of the lever arms relative to the first and / or second frame components. It can be specified that the damping effect can be adjusted by selecting the elastomeric material, particularly a hard or soft elastomeric component.
[0010] The lever arms are preferably arranged at an angle to each other, and in particular, not parallel to each other. This allows the first frame member to move along a substantially straight trajectory relative to the second frame member when the lever arms swing, especially without significant offset in the direction of the longitudinal extension of the lever arms.
[0011] The lever arms are preferably configured with different lengths. The two lever arms are advantageously configured with different lengths, particularly the lower lever arm, which can have a greater length than the upper lever arm. This allows for damping with very small offsets by actively rotating the second frame component to compensate for the torsion generated by the handlebars.
[0012] In a preferred embodiment of the invention, at least in the undamped state, the lever arms are respectively arranged longitudinally, substantially perpendicular to the handlebar axis and nearly parallel to the longitudinal extension of the handlebar seat tube, the handlebar axis being defined by a receiving device and the handlebar stem extending in the handlebar axis. This allows for a particularly linear damping effect between the first and second frame components, so that the rider does not experience any forward or backward displacement or hand twisting when compressed by the damping assembly.
[0013] Particularly preferably, the lever arms are each defined with a pivot point on a pivotable support structure on the frame component, wherein all pivot points are arranged vertically and / or horizontally spaced apart from each other, at least in the undamped state. This means that each pivot point is at a different distance from a fictitious common vertical and / or horizontal line intersecting with the corresponding pivot point.
[0014] Advantageously, the first lever arm has a first groove on its side facing the second lever arm and / or the second lever arm has a second groove on its side facing the first lever arm, wherein the elastomeric component abuts against the respective lever arm in at least one of the grooves. This groove does not necessarily have to originate from a plane, but can also be formed by the shape of the lever arm itself. The grooves of the lever arms can be constructed and / or arranged relative to each other such that the elastomeric component can abut against the two lever arms substantially planar and / or flush. This allows for particularly efficient force transmission.
[0015] In a preferred embodiment, the grooves together form, in particular, a wedge-shaped guide or guide surface for guiding the elastomeric component upon impact, wherein the elastomeric component can be displaced and deformed via the wedge-shaped guide surface during shock absorption. The relatively large contact surface between the lever arm and the elastomeric component enables particularly effective force transmission, thereby effectively preventing the component from carving into or cutting into the elastomeric component.
[0016] Particularly preferably, the grooves each have a shape corresponding to the shape of the elastomeric component, especially a corresponding negative shape. For example, a protruding outer contour formed on the elastomeric component can be accommodated by a corresponding recessed negative contour in the groove region. This allows the contact surface to be enlarged and improves force transmission, as described above.
[0017] According to one embodiment of the invention, at least one of the lever arms can be constructed in a two-part configuration, particularly having a first arm portion and a second arm portion. Specifically, each lever arm can have a first arm portion and a second arm portion, respectively also referred to as an expansion element. The arm portions can be arranged essentially in such a way that they form only the outer portion of the damping device and are particularly not fixedly connected to the inner portion. The two arm portions can still be guided relative to each other by using sliding bearings. The first arm portion is preferably constructed as a body extending over both the outer and inner portions of the damping device, particularly over approximately two-thirds of the total width of the damping device. The second arm portion is preferably formed from a relatively small, particularly narrow, body, which is preferably arranged only in the laterally outer region of the damping device. This allows for the lever arms to be installed in a particularly simple manner.
[0018] Particularly preferably, the two arm portions can be displaced relative to each other by screws, particularly by countersunk screws, especially in a direction parallel to the axis defined by the receiving device and in which the handlebar extends. To displace the first arm portion relative to the second arm portion, the countersunk screw can be threadedly connected to one of the first and second arm portions, and its end portion abuts against the other. Particularly preferably, the end portion of the screw is at least partially inserted into a groove or hole in the other of the first and second arm portions. This allows the screw to be guided relative to the second arm portion or the first arm portion to be held in place. When the countersunk screw is turned, it can create a barrier against the other of the first and second arm portions, thereby pushing the arm portions apart. This creates pretension, which effectively prevents play in the damping mechanism. In particular, tolerances can be compensated for, bearings preloaded, and ultimately play in the steering mechanism can be avoided.
[0019] Tests have shown that one of the optimal shapes for elastomeric components is a cuboid shape, especially a slightly twisted cuboid shape. This twisted cuboid shape, in particular, avoids gaps between the lever arm and the elastomer, and can absorb stronger forces in one direction than in the direction perpendicular to it. Therefore, elastomeric components are preferably constructed as cuboid components, especially those with a twisted cuboid shape.
[0020] Particularly preferably, the cuboid elastomeric component is arranged to extend longitudinally perpendicular to the longitudinal extension of the handlebar stem. This allows for particularly effective damping of impact forces from the bicycle frame toward the handlebars. Furthermore, the damping device can be constructed to be exceptionally lightweight and space-saving, and requires very little installation space.
[0021] Preferably, the elastomeric component is shape-locked between the two lever arms, and particularly preferably held by only the two lever arms. This makes the construction particularly compact.
[0022] Preferably, the elastomeric component additionally has at least one form-locking member that engages in a form-locking manner with a corresponding form-locking member formed on or through the lever arm. This allows the elastomeric component to be held in place particularly effectively and / or returned to its basic position after a damping process, especially after displacement or compression. The form-locking member can, for example, be configured as a pin or shoulder projecting from the outer contour of the elastomeric component on a side facing the lever arm, particularly the center of the lever arm, and inserted into a recess or hole formed in the lever arm. This achieves permanent and secure damping.
[0023] According to an alternative embodiment of the invention, the elastomeric component is constructed in a two-part or multi-part configuration, particularly having at least one first elastomeric element and at least one second elastomeric element. These elastomeric elements may have identical structures. In this variation, the elastomeric elements are preferably arranged laterally side-by-side, particularly in the direction of longitudinal extension of the handlebars. Thus, a left elastomeric element and a right elastomeric element may be present in the direction of travel of the bicycle. Furthermore, the elastomeric elements may be arranged spaced apart from each other, creating a free space between two elastomeric elements through which a fastening screw can extend to secure the two lever arms to each other. The fastening screw here can be threaded into one lever arm and threaded into the other lever arm via the screw head. This makes installation particularly easy.
[0024] Preferably, the shock absorber is surrounded by a resilient sleeve, particularly on at least four sides. The sleeve, in particular, can completely shield the shock absorber from the environment. This makes the shock absorber exceptionally safe and reduces maintenance costs. Furthermore, the rider faces a lower risk of injury compared to conventional shock absorbers. In the installed state, the outer contour of the sleeve preferably matches the outer contours of the first and second frame components, making the shock absorber not directly visible from the outside and presenting a visually appealing appearance, especially resembling a stem without shock absorbers.
[0025] A particular advantage is that the sleeve can be form-locked to the first and second frame members, that is, if the sleeve has at least one form-locking element for fixing to the first and second frame members. This makes the shock absorber particularly lightweight.
[0026] Preferably, the sleeve can be secured to the first frame member and / or the second frame member using at least one fastening screw. Particularly preferably, the sleeve has at least one recess through which the fastening screw extends to secure it to the first frame member and / or the second frame member. This ensures the secure and permanent positioning of the sleeve.
[0027] It can be specified that the sleeve is arranged to at least partially overlap with the first frame component and / or the second frame component. For example, this can effectively prevent dirt from entering the shock absorber from the outside.
[0028] Particularly preferably, the lever arm and the elastomer component are arranged in an activating connection such that, under impact loads, the two frame components shift relative to each other substantially perpendicular to the longitudinal extension of the lever arm and perpendicular to the longitudinal extension of the handlebar stem, and this shift is damped and limited between the lever arms by the compression and reversible deformation of the elastomer component. This achieves both highly pleasant and comfortable damping for the rider and ensures that the dimensions and shape of the outer contour remain at least almost unchanged even when the handlebars are compressed, especially without significantly protruding beyond the outer contour of the frame components. This is particularly advantageous for flow resistance. A further advantage is the particularly aesthetically pleasing appearance of the handlebar stem.
[0029] Preferably, an axis is defined by a receiving device or handlebar clamp, in which the handlebar stem of the bicycle handlebar extends, wherein the lever arm and elastomeric component are arranged such that, under impact loads, the second frame component and the handlebar stem disposed on the second frame component are displaced relative to the first frame component substantially in a direction perpendicular to the axis. This can be further achieved by twisting the handlebar stem about the axis by an angle of less than 5°, preferably a maximum of 3°. This makes impact damping particularly effective and comfortable.
[0030] The present invention also relates to a bicycle having a bicycle shock absorber comprising any one of the features of claims 1 to 21. Attached Figure Description
[0031] Exemplary embodiments of the invention will now be explained in more detail with reference to the accompanying drawings. The same reference numerals denote the same components. The drawings schematically illustrate: Figure 1a This is a cross-sectional view of the bicycle shock absorber according to the present invention in an undamped state; Figure 1b This is a cross-sectional view of a bicycle shock absorber in the damping state, based on Figure 1. Figure 2 It is a side view of the bicycle shock absorber in the damping state without a sleeve, according to Figure 1. Figure 3a It is a perspective detail drawing of the lever arm of the bicycle shock absorber based on Figure 1; Figure 3b This is a top view of the lever arm of the bicycle shock absorber based on Figure 1; Figure 4a This is a perspective detail drawing of the elastomeric component of a bicycle shock absorber, based on Figure 1. Figure 4b It is a perspective detail drawing of a two-part elastomer component; and Figure 5 This is a perspective detail drawing of the sleeve of a bicycle shock absorber based on Figure 1. Detailed Implementation
[0032] exist Figure 1a and 1b In the figures, reference numeral 1 denotes bicycle shock absorbers according to the invention, particularly handlebar shock absorbers. The shock absorber 1 is used to reduce impact on the handlebars (not shown here), and particularly to reduce impact on the bicycle handlebar housing 7 relative to the bicycle frame (not shown in detail here). A handlebar stem 6 extends substantially horizontally from the bicycle frame (not shown in detail here). The handlebar stem 6 is used to mount the handlebars (not shown) and includes, in particular, a first frame member 11 facing the bicycle frame and a second frame member 12 facing the handlebars, as shown in the left-hand portion of the figure.
[0033] The first frame component 11 and the second frame component 12 are, in this case, constructed as typical stem tubes. It should be understood that frame components 11 and 12 can, of course, have any other shape or cross-section. The first frame component 11 is constructed as part of the stem and is detachably connected to a bicycle frame (not shown in detail), particularly to a bicycle fork or fork axle. The second frame component 12 has a handlebar receiving device 7 at its distal end, remote from the first frame component 11, on which the handlebar stem can be mounted via a clampable front plate 22. The handlebar receiving device 7 and / or the handlebar stem (not shown) define an axis A1 that forms a transverse axis relative to the bicycle, specifically arranged perpendicular to the straight-line travel of the bicycle.
[0034] The first frame component 11 and the second frame component 12 have substantially the same outer contour 14 and are substantially parallel and arranged in the same horizontal plane along a section of their longitudinal extension (R2). However, the frame components 11 and 12 are not in direct contact with each other, but are arranged to be spaced apart. Here, the end-to-end distance (along the axial direction R2) is approximately the same as the width of the frame component 11 or 12. In the aforementioned region, the two frame components 11 and 12 are connected to each other by a damping device 2. The damping device 2 has two lever arms 3a and 3b that connect the first frame component 11 to the second frame component 12.
[0035] Lever arms 3a and 3b are both arranged in their longitudinal extensions substantially perpendicular to the longitudinal direction A1 of the handlebar (not shown). Lever arms 3a and 3b are arranged in their longitudinal extensions at an angle to each other, particularly not parallel to each other, and particularly at an angle between 0 and 10 degrees to the longitudinal direction R2 of the stem 6. In the present case, one lever arm is positioned above the other, such that the first lever arm can also be referred to as the upper lever arm, and the second lever arm positioned below can also be referred to as the lower lever arm. In the present case, lever arms 3a and 3b are constructed with different lengths, particularly the upper lever arm 3a having a shorter length than the lower lever arm 3b. Furthermore, lever arms 3a and 3b are rotatably supported on the first frame member 11 and the second frame member 12, respectively. The hinge joints of lever arms 3a and 3b on the frame members 11 and 12 can be achieved, in particular, by bolt or screw connection. For this purpose, especially as Figure 3a and Figure 3b As shown, a total of four bolts 17 are provided for each lever arm 3a, 3b, and these bolts are supported in eight sliding bearings 23, allowing the lever arms 3a, 3b to swing or rotate freely. In addition, the shock absorption device 2 includes a deformable elastomer component 4, which is arranged between the upper lever arm 11 and the lower lever arm 12.
[0036] The lever arms 3a and 3b are each constructed in two parts. Specifically, each lever arm 3a and 3b includes a first arm portion 25a and 25a' and a second arm portion 25b and 25b'. Figure 3bThe top view of the lever arm 3a shown illustrates a first arm portion 25a and a second arm portion 25a', also referred to as expansion elements. The first arm portion 25a is formed by a relatively larger body that extends across almost the entire width of the damping device 2, preferably two-thirds of the width. The second arm portion 25a' is formed by a relatively smaller, and particularly narrower, body that is arranged only in the lateral outer region of the damping device 2. The first arm portion 25a and the second arm portion 25a' are capable of displacement relative to each other. In the present case, the first arm portion 25a and the second arm portion 25a' are shown as spaced apart by a distance x. To allow the first arm portion 25a to be displaced relative to the second arm portion 25a', a countersunk screw 24 is provided. The countersunk screw 24 is operatively connected to one of the first arm portion 25a and the second arm portion 25a' by threads, and its end face abuts against the other of the first arm portion 25a and the second arm portion 25a'. When the countersunk screw 24 is turned, the second arm portion 25a' can thus be pushed away from the first arm portion 25a. To pull the second arm portion 25a' onto the first arm portion 25a, the first arm portion 25a can be preloaded relative to the second arm portion 25a'. This structure, in particular, allows for tolerance compensation, bearing preload, and ultimately prevents backlash in the steering mechanism. The first lever arm 3a has a first groove 3a' on its side 3a' facing the second lever arm 3b, and / or the second lever arm 3b has a second groove 3b' on its side 3b' facing the first lever arm 3a. The grooves are defined by the shapes of the lever arms 3a and 3b. The elastomeric component 4 rests against the two grooves 3a' and 3b' on the lever arms 3a and 3b. To achieve this resting on the entire surface, the grooves 3a' and 3b' have a negative shape corresponding to the elastomeric component 4. To guide the elastomeric component 4 in the event of impact damping, the grooves 3a' and 3b' have suitable, in particular, wedge-shaped guides or guide surfaces.
[0037] In the present context, the elastomeric component 4 should be understood as a reversibly deformable, particularly elastic, component that serves as a damping element, especially for braking and limiting the movement of lever arms 3a, 3b relative to the first frame component 11 and / or the second frame component 12. Figure 4a As shown, the elastomer component 4 is constructed as a cuboid component, and as shown in Figures 1 to 12. Figure 3b As can be seen, in the current configuration, the elastomeric component 4 is form-locked between the first frame components 11 and 12, particularly between the two lever arms 3a and 3b. For this purpose, the elastomeric component 4 has two form-locking elements 8 and 9 for securing to the first lever arm 3a and the second lever arm 3b. In the current configuration, the form-locking elements 8 and 9 are constructed as two protruding pins. The pins 8 and 9 can engage in recesses 15 and 16 formed on the lever arms 3a and 3b.
[0038] Alternatively, the elastomer component 4 can also be constructed as a two-part or multi-part component. Figure 4b The diagram illustrates a two-part construction of the elastomer component 4 as an example. Specifically, each elastomer component 4 may include a first elastomer element 4a and a second elastomer element 4b. The two elastomer elements 4a and 4b may be constructed identically. Furthermore, as... Figure 4b As shown, the elastomeric elements 4a and 4b are preferably arranged spaced apart from each other, such that the screw used to secure the two lever arms 3a and 3b to each other can extend through the free space formed between the two elastomeric elements 4a and 4b. The screw is not shown in the figure, but it can extend through... Figure 3a and Figure 3b The first arm portions 25a and 25b shown have a central opening or hole 15. A screw extends from the upper lever arm 3a into the lower lever arm 3b. Here, the screw can rest externally against the upper lever arm 3a by its head, extend unthreaded through the hole 15, and operatively connect with the lower lever arm 3b in the hole 16 via a threaded section.
[0039] Additionally, a screw-on preload element 26 is provided, which presses the second frame member 12 into the correct position and also applies prestress to the elastomer member 4 to such an extent that there is no play between the elastomer member 4 and the frame members 11, 12, and the elastomer member 4 is fixed to prevent detachment or sinking. For this purpose, the preload element 26 is flush with the side surface of the upper lever arm 3a. Using the preload element 26, the shock absorber 2 can be reset and held in place. Figure 1a The undamped state 101 shown is also known as the basic position. Furthermore, upward spring travel and the potentially unpleasant feeling associated with front wheel "bouncing" can be avoided. The elastomer component 4 and lever arms 3a, 3b do not protrude from the outer contour 14 of the frame components 11, 12.
[0040] Figure 5A resilient sleeve 5 is shown surrounding the shock absorber 2 on its outer surface. The sleeve 5 is form-locked to the first frame member 11 and the second frame member 12. For this purpose, the sleeve 5 has two form-locking elements 18 and 19 for securing it to the first frame member 11 and the second frame member 12. In the present case, the form-locking elements 18 and 19 are configured as two protruding shoulders. The shoulders 18 and 19 abut against corresponding shoulders on the first frame member 11 and the second frame member 12. Additionally, in the present case, the sleeve 5 is secured to the first frame member 11 and the second frame member 12 by two fastening screws 13, which are covered by a cap 10 (also called a cover). For this purpose, the sleeve includes two recesses 20 and 21. To prevent dirt from penetrating the shock absorber 1 and for aesthetic purposes, the sleeve is arranged to at least partially overlap the first frame member 11 and the second frame member 12. In the installed state, the outer contour of the sleeve 5 coincides with the outer contour 14 of the first frame member 11 and the second frame member 12.
[0041] exist Figure 1a In the diagram, the system is shown in an undamped state 101. Lever arms 3a and 3b are arranged almost parallel and almost horizontally here.
[0042] Figure 1b The damping configuration 102 is shown, in which the handlebar receiving device 7 is displaced along direction R1 and rotated by a very small angle in the circumferential direction of the handlebar stem. The lever arms 3a and 3b are arranged here non-parallel at an angle of approximately 45° to the horizontal plane. The lever arms 3a and 3b and the elastomer component 4 are arranged here to interact with each other such that, under impact loads, the two frame components 11 and 12 are substantially displaced relative to each other along direction R1 perpendicular to the longitudinal extensions of the lever arms 3a and 3b and perpendicular to the longitudinal extension R2 of the handlebar stem 6, and this displacement is damped and limited between the lever arms 3a and 3b by the compression and reversible deformation of the elastomer component 4. The handlebar stem (not shown) is displaced here relative to the first frame component 11 substantially along direction R1 perpendicular to axis A1, and additionally twisted circumferentially by an angle preferably 3°.
[0043] List of reference numerals 1. Bicycle shock absorber 2. Vibration damping device 3a lever arm 3b lever arm 3a' side view 3b' side 3a'' Groove, negative profile 3b'' Groove, negative profile 4 Elastomer Components 4a First elastic element 4b Second elastomer element 5 sleeves 6 handlebar stem 7. Retaining device, handlebar clamp 8. Shape locking elements, pins, shoulders 9. Shape locking elements, pins, shoulders 10 covers 11 First frame component 12 Second frame components 13a Fastening Screw 13b fastening screw 14 Outer contour 15. Shape-locking elements, recesses, openings, holes 16 Shape-locking elements, recesses, openings, holes 17 bolts 18-shaped locking elements, shoulders 19 Shape locking elements, shoulders 20 recesses 21 recess 22 front plate 23 sliding bearings 24 countersunk screws 25a arm section, expansion element 25a' arm section, expansion element 25b arm section, expansion element 25b' arm section, expansion element 26 Preload Components 101 without shock absorption 102 Shock Absorption Status A1 axis R1 direction of motion R2 handlebars longitudinal direction X distance
Claims
1. A bicycle shock absorber (1), especially a bicycle handlebar shock absorber on the handlebar stem (6), used to reduce the impact of the bicycle handlebar holder (7) relative to the bicycle frame, having A first frame component (11) facing the bicycle frame and a second frame component (12) facing away from the bicycle frame and towards the housing (7). The first frame component (11) and the second frame component (12) are connected to each other through a shock absorption device (2). Its features are, The shock absorption device (2) includes a first lever arm (3a) and a second lever arm (3b), wherein the lever arms (3a, 3b) connect the first frame component (11) and the second frame component (12), and are respectively rotatably supported on the first frame component (11) and the second frame component (12), and a deformable elastic body component (4) is provided between the two lever arms (3a, 3b).
2. The bicycle shock absorber (1) according to claim 1, characterized in that, The lever arms (3a, 3b) are arranged at an angle to each other, and in particular, they are not parallel to each other.
3. The bicycle shock absorber (1) according to claim 1 or 2, characterized in that, The lever arms (3a, 3b) are configured with different lengths.
4. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The lever arms (3a, 3b) are arranged, at least in the undamped state (101), to be substantially perpendicular to the axis (A1) and substantially parallel to the longitudinal extension (R1) of the handlebar stem (6), wherein the axis is defined by the receiving device (7) and the handlebar extends in the axis.
5. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The pivot support of the lever arm (3a, 3b) is defined on the frame component (11, 12) with pivot center points (M1, M2, M3, M4) respectively, and all pivot center points (M1, M2, M3, M4) are arranged vertically and / or horizontally spaced apart from each other, at least in the undamped state (101).
6. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The first lever arm (3a) has a first groove (3a'') on the side (3a') facing the second lever arm (3b) and / or the second lever arm (3b) has a second groove (3b') on the side (3b') facing the first lever arm (3a'), and the elastomeric component (4) abuts against the respective lever arm (3a, 3b) in at least one of the grooves (3a', 3b').
7. The bicycle shock absorber (1) according to claim 6, characterized in that, The grooves (3a”, 3b”) together form, in particular, wedge-shaped guides for guiding the elastomeric component (4) in the event of an impact, wherein the elastomeric component (4) is arranged to be displaceable and deformable during shock absorption.
8. The bicycle shock absorber (1) according to claim 6 or 7, characterized in that, The grooves (3a”, 3b”) have shapes corresponding to the elastomeric component (4), especially the corresponding negative shapes.
9. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The lever arms (3a, 3b) are constructed in two parts, specifically having a first arm part (25a, 25b) and a second arm part (25a', 25b').
10. The bicycle shock absorber (1) according to claim 9, characterized in that, The two arm portions (25a, 25a', 25b, 25b') are movable relative to each other by screws (24), particularly in a direction parallel to the axis (A1), which is defined by the receiving device (7) and in which the handlebar extends.
11. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The elastomeric component (4) is constructed as a cuboid component, particularly having a twisted cuboid shape.
12. The bicycle shock absorber (1) according to claim 11, characterized in that, The cuboid elastomeric component (4) is arranged in a longitudinal extension perpendicular to the longitudinal extension (R1) of the handlebar stem (6).
13. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The elastomeric component (4) is shape-locked between the two lever arms (3a, 3b) and is held in particular by the two lever arms (3a, 3b) alone.
14. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The elastomeric component (4) has at least one shape-locking element (8, 9) that engages with a corresponding shape-locking element (15, 16) formed on or through the lever arm (3a, 3b), in particular a pin (8, 9) or shoulder protruding from the outer contour on the side of the elastomeric component (4) facing the lever arm (3a, 3b), especially the center of the lever arm (3a, 3b), which is inserted into a recess (15, 16) formed on the lever arm (3a, 3b).
15. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The elastomeric component (4) is configured as a two-part or multi-part component, particularly having a first elastomeric element (4a) and a second elastomeric element (4b).
16. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The shock absorber (2) is surrounded by an elastic sleeve (5), especially on at least four sides.
17. The bicycle shock absorber (1) according to claim 16, characterized in that, The sleeve (5) can be form-locked to the first and second frame members (11, 12), and in particular has at least one form-locking element (5) for fixing to the first and second frame members (11, 12).
18. The bicycle shock absorber (1) according to claim 16 or 17, characterized in that, The sleeve (5) can be fixed to the first frame member (11) and / or the second frame member (12) by at least one fastening screw (13), and in particular has at least one groove through which a fastening screw extends for fixing to the first frame member (11) and / or the second frame member (12).
19. The bicycle shock absorber (1) according to any one of claims 16 to 18, characterized in that, The sleeve (5) is arranged to at least partially overlap with the first frame component (11) and / or the second frame component (12).
20. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The lever arms (3a, 3b) and the elastomer component (4) are arranged to act in connection with each other such that, under impact load, the two frame components (11, 12) are displaced relative to each other in a direction (R1) that is substantially perpendicular to the longitudinal extension of the lever arms (3a, 3b) and perpendicular to the longitudinal extension (R2) of the handlebar stem (6), and such displacement is damped and limited between the lever arms (3a, 3b) by compression and reversible deformation of the elastomer component (4).
21. The bicycle shock absorber (1) according to any one of the preceding claims, characterized in that, The receiving device (7) defines an axis (A1) in which the handlebar extends, and the lever arms (3a, 3b) and the elastomeric component (4) are arranged such that, under impact loads, the second frame component (12) and the handlebar disposed thereon are displaced substantially relative to the first frame component (11) in a direction (R1) perpendicular to the axis (A1), and in particular, additionally twisted at an angle of less than 5°, preferably a maximum of 3°.
22. A bicycle having a bicycle shock absorber (1) according to any one of the preceding claims.