Front fork damping device and scooter
By designing a front fork shock absorber device and using a combination of connecting rod structure and shock absorber, the vibration problem of the scooter when driving on uneven roads is solved, achieving better shock absorption effect and a more stable driving experience. .
Patent Information
- Application Number
- CN202421264230.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-06-04
AI Technical Summary
When a scooter drives on uneven roads, it is easy to cause vibration of the vehicle body, resulting in poor riding experience for users. The existing sliding sleeve-type shock absorbing structure is prone to deformation, causing lag, and affecting the shock absorbing effect.
Design a front fork shock-absorbing device, which includes a front fork, a front wheel, a shock absorber and a rocker arm. The shock absorber is located on the rear side of the front fork arm to form a connecting rod structure, and absorbs impacts through the shock absorber's damping effect. power and reduce lag.
A better shock absorption effect is achieved, vehicle vibration is reduced, and the user's riding comfort is improved. By moving the shock absorber closer to the center of the vehicle, the shock absorption effect is further improved, making the scooter more stable.
Smart Images
Figure CN222373055U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to a front fork shock absorbing device and a scooter. Background Art
[0002] When scooters, bicycles and other mobility scooters are driven on uneven roads, the vehicle body is easily vibrated, resulting in a poor riding experience for users. In the related art, a sliding sleeve type shock-absorbing structure is usually installed at the front wheel position of the mobility scooter. The shock-absorbing structure is easily deformed when impacted, which in turn causes the shock-absorbing structure to become stuck, affecting the shock-absorbing effect of the vehicle and reducing the riding comfort of the user. Utility Model Content
[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.
[0004] To this end, an embodiment of the utility model provides a front fork shock absorbing device, which can effectively absorb impact force and has a good shock absorbing effect.
[0005] The embodiment of the utility model further provides a walking vehicle.
[0006] The front fork shock absorbing device of the embodiment of the utility model comprises: a front fork, the front fork comprises a front fork stem and a front fork arm, the front fork arm is arranged at the lower end of the front fork stem; a front wheel, the front wheel has a wheel axle; a shock absorber, the shock absorber is arranged on the rear side of the front fork arm, the upper end of the shock absorber is pivotally connected to the upper end of the front fork arm, and the lower end of the shock absorber is pivotally connected to the wheel axle; a rocker arm, one end of the rocker arm is pivotally connected to the lower end of the front fork arm, and the other end of the rocker arm is pivotally connected to the wheel axle.
[0007] According to the front fork shock absorbing device of the embodiment of the utility model, when the front wheel travels on a bumpy road surface, the connecting rod structure formed by the front fork arm, the rocker arm and the shock absorber will be deformed, and under the shock absorbing effect of the shock absorber, the impact force generated by the front wheel can be fully absorbed. Compared with the structure of sliding sleeve shock absorption in the related art, the shock absorbing structure of the front fork shock absorbing device of the embodiment of the utility model is flexible in movement, not easy to get stuck, and has a better shock absorbing effect. On the other hand, the front fork shock absorbing device of the embodiment of the utility model can make the shock absorber closer to the center of the vehicle by arranging the shock absorber on the rear side of the front fork arm, thereby further improving the shock absorbing effect of the front fork shock absorbing device and making the scooter more stable.
[0008] In some embodiments, there are two front forks, which are respectively arranged on the left and right sides of the front wheel, and there are two shock absorbers and two rocker arms, which correspond one to one with the two front forks.
[0009] In some embodiments, the front fork arm includes a fork arm body and a connecting arm, the upper end of the fork arm body is connected to the front fork stem, the extension direction of the fork arm body is consistent with the extension direction of the front fork stem, the connecting arm is connected to the fork arm body and extends backward, and the upper end of the shock absorber is pivotally connected to the rear end of the connecting arm.
[0010] In some embodiments, the distance between the pivot point O1 of the connecting arm and the shock absorber and the fork arm body is L1, and the distance between the pivot point O2 of the fork arm body and the rocker arm and the pivot point O3 of the shock absorber and the rocker arm is L2, wherein L1<L2.
[0011] In some embodiments, the height of the pivot point O2 between the fork arm body and the rocker arm is not lower than the height of the pivot point O3 between the shock absorber and the rocker arm, and the angle between the line between O2 and O3 and the front-rear direction of the front wheel is α, where 0≤α≤35°.
[0012] In some embodiments, the intersection point of the center line of the front fork stem and the contact bottom surface of the front wheel is M, the intersection point of the vertical line passing through the center of the wheel axle and the contact bottom surface of the front wheel is N, and in a projection plane orthogonal to the axial direction of the wheel axle, the distance between M and N is greater than or equal to 60 mm and less than or equal to 80 mm.
[0013] In some embodiments, the rocker arm includes a first plate and a second plate, the wheel axle rotatably passes through the first plate and the second plate, the lower end of the shock absorber is disposed between the first plate and the second plate, and the lower end of the front fork arm is disposed between the first plate and the second plate and is pivotally connected to the first plate and the second plate.
[0014] In some embodiments, the shock absorber includes a spring and a damper, the damper includes a first damping member and a second damping member, the first damping member and the second damping member are slidably connected, the spring is sleeved on the first damping member and the second damping member, the first damping member is pivotally connected to the front fork arm, and the second damping member is pivotally connected to the wheel axle.
[0015] A scooter according to another embodiment of the present invention comprises a front fork shock absorber, which is any one of the front fork shock absorbers described in the embodiments of the present invention; a vehicle body connected to the front fork riser; and a rear wheel disposed at the rear side of the vehicle body.
[0016] According to the scooter of the embodiment of the utility model, when the front wheel travels on a bumpy road, the connecting rod structure formed by the front fork arm, the rocker arm and the shock absorber will be deformed, and under the shock absorbing effect of the shock absorber, the impact force generated by the front wheel can be fully absorbed. Compared with the structure of sliding sleeve shock absorption in the related art, the shock absorbing structure of the front fork shock absorbing device of the embodiment of the utility model is flexible in movement, not prone to jamming, and has a better shock absorbing effect. On the other hand, the scooter of the embodiment of the utility model can make the shock absorber closer to the center of the vehicle by arranging the shock absorber on the rear side of the front fork arm, thereby further improving the shock absorbing effect of the front fork shock absorbing device, making the scooter travel more stable.
[0017] In some embodiments, the mobility scooter is a scooter. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a front view of the front fork shock absorbing device of the embodiment of the utility model.
[0019] Figure 2 It is a side view of the front fork shock absorbing device according to an embodiment of the utility model.
[0020] Figure 3 It is a partial schematic diagram of a front fork shock absorbing device according to an embodiment of the utility model.
[0021] Reference numerals:
[0022] 1. front fork; 11. front fork stem; 12. front fork arm; 121. fork arm body; 122. connecting arm;
[0023] 2. front wheel; 21. axle;
[0024] 3. shock absorber; 31. spring; 32. damper;
[0025] 4. rocker arm; 41. first plate; 42. second plate. DETAILED DESCRIPTION
[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.
[0027] Please refer to the following Figures 1 to 3 A front fork shock absorbing device and a scooter according to an embodiment of the utility model are described.
[0028] like Figures 1 to 3As shown, the front fork shock absorbing device of the embodiment of the utility model comprises: a front fork 1, a front wheel 2, a shock absorber 3 and a rocker arm 4. The front fork 1 comprises a front fork stem 11 and a front fork arm 12, the front fork arm 12 is arranged at the lower end of the front fork stem 11, the front wheel 2 has a wheel axle 21, the shock absorber 3 is arranged at the rear side of the front fork arm 12, the upper end of the shock absorber 3 is pivotally connected to the upper end of the front fork arm 12, the lower end of the shock absorber 3 is pivotally connected to the wheel axle 21, one end of the rocker arm 4 is pivotally connected to the lower end of the front fork arm 12, and the other end of the rocker arm 4 is pivotally connected to the wheel axle 21.
[0029] According to the front fork shock absorbing device of the embodiment of the utility model, when the front wheel 2 travels on a bumpy road, the connecting rod structure formed by the front fork arm 12, the rocker arm 4 and the shock absorber 3 will be deformed, and under the shock absorbing effect of the shock absorber 3, the impact force generated by the front wheel 2 can be fully absorbed. Compared with the structure of sliding sleeve shock absorption in the related art, the shock absorbing structure of the front fork shock absorbing device of the embodiment of the utility model is flexible in movement, not easy to get stuck, and has a better shock absorption effect. On the other hand, the front fork shock absorbing device of the embodiment of the utility model can make the shock absorber 3 closer to the center of the vehicle by arranging the shock absorber 3 on the rear side of the front fork arm 12, thereby further improving the shock absorption effect of the front fork shock absorbing device, making the scooter more stable.
[0030] Alternatively, if Figure 2 As shown, there are two front fork arms 12, which are respectively arranged on the left and right sides of the front wheel 2, and there are two shock absorbers 3 and rocker arms 4, which correspond to the two front fork arms 12. It can be understood that the shock absorbers 3 and rocker arms 4 are symmetrically arranged on both sides of the front wheel 2 along the axial direction of the wheel axle 21, so that the shock absorbing structure composed of the two shock absorbers 3 and the rocker arms 4 can be used for shock absorption, so as to fully absorb the impact force received by the front wheel 2 and improve the shock absorption effect of the front fork shock absorbing device.
[0031] Specifically, Figure 1 As shown, the front fork arm 12 includes a fork arm body 121 and a connecting arm 122, the upper end of the fork arm body 121 is connected to the front fork riser 11, the extension direction of the fork arm body 121 is consistent with the extension direction of the front fork riser 11, the connecting arm 122 is connected to the fork arm body 121 and extends backward, and the upper end of the shock absorber 3 is pivoted to the rear end of the connecting arm 122. It should be noted that the front-to-back direction of the connecting arm 122 is consistent with the front-to-back direction of the scooter. Since the connecting arm 122 extends backward, the upper end of the shock absorber 3 is pivoted to the rear end of the connecting arm 122, which can facilitate the assembly of the shock absorber 3, and can avoid interference between the shock absorber 3 and the fork arm body 121 when the shock absorber 3 rotates, which is conducive to improving the reliability of the movement of the front fork shock absorbing device.
[0032] In one example, if Figure 1As shown, the distance between the pivot point O1 of the connecting arm 122 and the shock absorber 3 and the fork arm body 121 is L1, and the distance between the pivot point O2 of the fork arm body 121 and the rocker arm 4 and the pivot point O3 of the shock absorber 3 and the rocker arm 4 is L2, wherein L1<L2. It can be understood that the distance between the upper pivot point of the shock absorber 3 and the fork arm body 121 is L1, and the distance between the front and rear pivot points of the rocker arm 4 is L2. Since the distance between the upper pivot point of the shock absorber 3 and the fork arm body 121 is greater than the distance between the front and rear pivot points of the rocker arm 4, the structural layout of the front fork shock absorbing device can be optimized, so that the connecting rod structure composed of the front fork arm 12, the shock absorber 3 and the rocker arm 4 has a better effect of absorbing vibration, and the structural layout is compact, occupying less space at the upper end of the front fork arm 12.
[0033] Alternatively, if Figure 1 As shown, the height of the pivot point O2 between the fork arm body 121 and the rocker arm 4 is not lower than the height of the pivot point O3 between the shock absorber 3 and the rocker arm 4, and the angle between the line between O2 and O3 and the front-to-back direction of the front wheel 2 is α, where 0≤α≤35°. For example, α can be 0, 5°, 15°, 20°, 25°, 35°
[0034] The inventor of the present application has found through experimental research that when the angle α is greater than 35°, the scooter with the front fork shock absorber is prone to rollover during braking. In other words, when the angle α is greater than 35°, the controllability of the scooter during braking is poor, which is not conducive to ensuring the personal safety of the rider. On the other hand, when the height of O2 is lower than the height of O3, the shock absorbing effect of the front fork shock absorber is poor.
[0035] Therefore, the front fork shock absorbing device of the embodiment of the utility model adopts the above-mentioned configuration, which can ensure the controllability of the scooter during braking and has a better shock absorbing effect.
[0036] Alternatively, if Figure 1 As shown, the intersection point of the center line of the front fork stem 11 and the contact bottom surface of the front wheel 2 is M, and the intersection point of the vertical line passing through the center of the wheel axle 21 and the contact bottom surface of the front wheel 2 is N. In the projection plane orthogonal to the axial direction of the wheel axle 21, the distance between M and N is greater than or equal to 60 mm and less than or equal to 80 mm. It can be understood that the distance between M and N, that is, the trailing distance of the front fork shock absorber, is located in front of the point N. For example, the trailing distance can be 60 mm, 65 mm, 70 mm, 75 mm, or 80 mm.
[0037] The inventor of the present application has found through experimental research that when the towing distance is less than 60 mm, the shock absorbing effect of the shock absorber 3 will be greatly reduced. When the towing distance is greater than 80 mm, the steering effect of the scooter will be greatly reduced. Therefore, the inventor of the present application can ensure the shock absorbing effect of the shock absorber 3 and not affect the steering of the scooter by designing the towing distance with the above parameters, so as to make the riding of the scooter more stable and have a better use effect.
[0038] In some embodiments, Figure 2 and Figure 3 As shown, the rocker arm 4 includes a first plate 41 and a second plate 42, the wheel axle 21 is rotatably arranged through the first plate 41 and the second plate 42, the lower end of the shock absorber 3 is arranged between the first plate 41 and the second plate 42, and the lower end of the front fork arm 12 is arranged between the first plate 41 and the second plate 42, and is pivotally connected to the first plate 41 and the second plate 42. It can be understood that the first plate 41 and the second plate 42 are arranged at intervals along the axial direction of the wheel axle 21. The front fork shock absorbing device of the embodiment of the utility model can reduce the weight of the rocker arm 4 and ensure the structural strength of the rocker arm 4 by setting the rocker arm 4 to the above structure. In addition, by setting the lower end of the shock absorber 3 between the first plate 41 and the second plate 42, and the lower end of the front fork arm 12 between the first plate 41 and the second plate 42, the stability of the force after the rocker arm 4 is connected with the shock absorber 3 and the front fork arm 12 can be ensured, and the assembly is convenient.
[0039] Alternatively, if Figure 2 and Figure 3 As shown, the shock absorber 3 includes a spring 31 and a damper 32. The damper 32 includes a first damper (not shown) and a second damper (not shown). The first damper and the second damper are slidably connected. The spring 31 is sleeved on the first damper and the second damper. The first damper is pivoted to the front fork arm 12, and the second damper is pivoted to the wheel axle 21. It can be understood that the first damper and the second damper are slidably sleeved structures. Hydraulic oil is arranged in the damper 32. When the damper 32 is pressurized, the first damper and the second damper are close to each other to absorb the impact force received by the front wheel 2. At the same time, the spring 31 is compressed and accumulates elastic potential energy. When the spring 31 is reset, the spring 31 can drive the first damper and the second damper to move away from each other, so that the damper 32 is reset to its original position.
[0040] According to another embodiment of the present invention, a walking vehicle comprises a front fork shock absorbing device, a vehicle body and a rear wheel, wherein the front fork shock absorbing device is the front fork shock absorbing device of the present invention, the vehicle body is connected to the front fork riser 11, and the rear wheel is arranged at the rear side of the vehicle body. For example, the walking vehicle is a scooter.
[0041] According to the scooter of the embodiment of the utility model, when the front wheel 2 travels on a bumpy road, the connecting rod structure formed by the front fork arm 12, the rocker arm 4 and the shock absorber 3 will be deformed, and under the shock absorbing effect of the shock absorber 3, the impact force generated by the front wheel 2 can be fully absorbed. Compared with the structure of the sliding sleeve shock absorption in the related art, the shock absorbing structure of the front fork shock absorbing device of the embodiment of the utility model is flexible in movement, not easy to get stuck, and has a better shock absorption effect. On the other hand, the scooter of the embodiment of the utility model can make the shock absorber 3 closer to the center of the vehicle by arranging the shock absorber 3 on the rear side of the front fork arm 12, thereby further improving the shock absorption effect of the front fork shock absorbing device, making the scooter travel more stable.
[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0046] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0047] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.
Claims
1. A front fork shock absorbing device, characterized in that: include: A front fork, the front fork comprising a front fork riser and a front fork arm, the front fork arm being arranged at the lower end of the front fork riser; a front wheel having an axle; A shock absorber, wherein the shock absorber is arranged at the rear side of the front fork arm, the upper end of the shock absorber is pivotally connected to the upper end of the front fork arm, and the lower end of the shock absorber is pivotally connected to the wheel axle; A rocker arm, one end of which is pivotally connected to the lower end of the front fork arm, and the other end of which is pivotally connected to the wheel axle.
2. The front fork shock absorbing device according to claim 1, characterized in that: There are two front forks, which are arranged on the left and right sides of the front wheel respectively. There are two shock absorbers and two rocker arms, which correspond to the two front forks one by one.
3. The front fork shock absorbing device according to claim 1, characterized in that: The front fork arm includes a fork arm body and a connecting arm, the upper end of the fork arm body is connected to the front fork stem, the extension direction of the fork arm body is consistent with the extension direction of the front fork stem, the connecting arm is connected to the fork arm body and extends backward, and the upper end of the shock absorber is pivotally connected to the rear end of the connecting arm.
4. The front fork shock absorbing device according to claim 3, characterized in that: The distance between the pivot point O1 of the connecting arm and the shock absorber and the fork arm body is L1, and the distance between the pivot point O2 of the fork arm body and the rocker arm and the pivot point O3 of the shock absorber and the rocker arm is L2, wherein L1<L2.
5. The front fork shock absorbing device according to claim 3, characterized in that: The height of the pivot point O2 between the fork arm body and the rocker arm is not lower than the height of the pivot point O3 between the shock absorber and the rocker arm, and the angle between the line between O2 and O3 and the front-rear direction of the front wheel is α, where 0≤α≤35°.
6. The front fork shock absorbing device according to claim 1, characterized in that: The intersection point of the center line of the front fork stem and the contact bottom surface of the front wheel is M, the intersection point of the vertical line passing through the center of the wheel axle and the contact bottom surface of the front wheel is N, and in the projection plane orthogonal to the axial direction of the wheel axle, the distance between M and N is greater than or equal to 60 mm and less than or equal to 80 mm.
7. The front fork shock absorbing device according to claim 1, characterized in that: The rocker arm includes a first plate and a second plate, the wheel axle is rotatably passed through the first plate and the second plate, the lower end of the shock absorber is arranged between the first plate and the second plate, and the lower end of the front fork arm is arranged between the first plate and the second plate and is pivotally connected to the first plate and the second plate.
8. The front fork shock absorbing device according to any one of claims 1 to 7, characterized in that: The shock absorber includes a spring and a damper, the damper includes a first damping member and a second damping member, the first damping member and the second damping member are slidably connected, the spring is sleeved on the first damping member and the second damping member, the first damping member is pivotally connected to the front fork arm, and the second damping member is pivotally connected to the wheel axle.
9. A mobility scooter, characterized in that: include: A front fork shock absorbing device, wherein the front fork shock absorbing device is the front fork shock absorbing device according to any one of claims 1 to 8; A vehicle body, the vehicle body being connected to the front fork riser; A rear wheel is arranged at the rear side of the vehicle body.
10. The mobility scooter according to claim 9, characterized in that: The walking vehicle is a scooter.