Front damping structure applied to two-wheeled vehicle
By innovatively placing the shock-absorbing spring inside the guide rod at the front of the two-wheeled vehicle, and through the design of the limiting screw and the movable cavity, and the innovative design of the head of the limiting screw abutting against the shock-absorbing spring, the innovative design of the utility model solves the above-mentioned problems existing in the prior art, solves the problem of insufficient shock-absorbing stroke in the prior art, and achieves a better overall shock absorption effect.
Patent Information
- Application Number
- CN202422679111.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-11-04
AI Technical Summary
In existing two-wheeled vehicle front shock absorption structures, the shock absorber spring occupies the travel space of the guide rod, resulting in insufficient shock absorption travel and making it difficult to achieve a large shock absorption effect.
The damping spring is placed inside the guide rod, and the large damping stroke is achieved by cooperating with the movable cavity through the limiting screw. The component design of the structure is optimized by adopting the structure of buffer pad and fastener. The component design of the structure is optimized by the design of the head of the limiting screw and the movable cavity. Axial movement is achieved by the head of the limiting screw abutting against the damping spring.
While reducing structural dimensions, a larger damping stroke and effect are achieved, improving structural stability and damping performance, and solving the problem of insufficient damping stroke in existing technologies.
Smart Images
Figure CN223618866U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle shock absorption technology, specifically to a front shock absorption structure for two-wheeled vehicles. Background Technology
[0002] Currently, two-wheeled vehicles experience severe vibrations when traveling at high speeds over bumpy roads. Applying front shock absorbers can effectively reduce these vibrations. Most current front shock absorber structures employ a configuration where the shock absorber spring is placed within a guide sleeve, with the spring and guide rod coaxial and arranged vertically.
[0003] Because the spring occupies the travel space of the guide rod, the front shock absorber of this structure is often quite long when a large shock absorption stroke is required. Utility Model Content
[0004] To address the aforementioned problems in the existing technology, this utility model provides a front shock absorption structure for two-wheeled vehicles.
[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:
[0006] A front shock absorber structure for a two-wheeled vehicle includes a front fork with two extended guide rods and a sleeve that can be connected to a wheel. The sleeve has a movable cavity open at one end of the sleeve, and the sleeve can be fitted onto the guide rods through the movable cavity.
[0007] The guide rod has an internal mounting cavity, in which a shock-absorbing spring is placed;
[0008] A limiting screw is provided in the mounting cavity. The head of the limiting screw abuts against the end of the shock-absorbing spring near the wheel. The rod of the limiting screw can movably pass through the guide rod and is fixedly connected to the inner end of the movable cavity.
[0009] Preferably, a through hole is provided on the inner end of the mounting cavity, and the rod of the limiting screw extends into the movable cavity through the through hole and is fixedly connected to the inner end of the movable cavity.
[0010] Preferably, a first buffer pad is provided between the head of the limiting screw and the inner end of the mounting cavity.
[0011] Preferably, a second buffer pad is provided on the inner end of the movable cavity.
[0012] Preferably, the mounting cavity is open at the end of the guide rod away from the sleeve; a fastener is threadedly connected to the end of the guide rod away from the sleeve, and the fastener is used to seal the mounting cavity.
[0013] Preferably, the rod of the limiting screw is threadedly fixed to the inner end of the movable cavity.
[0014] Preferably, a sliding sleeve is fixedly provided in the movable cavity, and the movable cavity is sleeved on the guide rod through the sliding sleeve.
[0015] Preferably, a sealing ring is provided at the opening of the movable cavity, so that when the sleeve is fitted onto the guide rod, the sealing ring can seal the gap between the sleeve and the guide rod.
[0016] Preferably, the sleeve is provided with a hook claw, and the hook claw is provided with a mounting groove, through which the sleeve is connected and installed to the wheel.
[0017] Preferably, the fork assembly further includes a vertical tube and a connector; one end of the vertical tube is connected to the vehicle body, and the other end is connected to the end of the guide rod away from the sleeve via the connector.
[0018] This utility model has at least the following beneficial effects:
[0019] This application places the damping spring in the guide rod, so that the damping spring no longer occupies the travel space of the guide rod in the sleeve. This allows the guide rod to make full use of the space of the movable cavity, thereby achieving a larger damping stroke with a smaller overall size of the damping structure and improving the damping effect of the damping structure. Attached Figure Description
[0020] Figure 1 A perspective view of the front damping structure in some embodiments of this application is shown;
[0021] Figure 2 A top view of the front damping structure in some embodiments of this application is shown;
[0022] Figure 3 It shows Figure 2 A cross-sectional view along the AA direction;
[0023] Figure 4 It shows Figure 3 A magnified view of a portion of point A in the middle.
[0024] The names of the parts referred to by the numbers in the attached diagram are as follows:
[0025] 100. Front fork assembly; 110. Stem tube; 120. Connector; 130. Guide rod; 131. Mounting cavity; 132. Through hole; 133. Fastener; 200. Sleeve; 210. Movable cavity; 211. Threaded hole; 212. Sliding sleeve; 213. Sealing ring; 220. Claw; 221. Mounting groove; 300. Shock absorber spring; 400. Limiting screw; 410. Head; 420. Rod; 500. First buffer pad; 600. Second buffer pad. Detailed Implementation
[0026] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.
[0027] like Figure 1-4 As shown, this embodiment provides a front shock absorber structure for a two-wheeled vehicle, which includes a front fork 100 and a sleeve 200. The front fork 100 includes a vertical tube 110, two connectors 120, and two guide rods 130. One end of the vertical tube 110 can be connected and installed on the entire two-wheeled vehicle. The other end of the vertical tube 110 is connected to the two connectors 120, and the vertical tube 110 is connected to the two guide rods 130 through the two connectors 120 respectively. The sleeve 200 is provided with a movable cavity 210 with an opening at one end, so that the sleeve 200 can be sleeved on the end of the guide rod 130 away from the connector 120 through the movable cavity 210. The other end of the sleeve 200 without an opening can be connected and installed to the wheel of the two-wheeled vehicle.
[0028] Furthermore, the interior of the guide rod 130 is hollow, forming a mounting cavity 131, in which a shock-absorbing spring 300 is installed. A limiting screw 400 is also installed in the mounting cavity 131. The limiting screw 400 includes a head 410 and a rod 420 fixedly connected to form an integral structure, wherein the radial dimension of the head 410 is larger than the radial dimension of the rod 420. After installation, the head 410 of the limiting screw 400 abuts against the end of the shock-absorbing spring 300 near the wheel, and the rod 420 of the limiting screw 400 passes through the guide rod 130 and extends into the movable cavity 210, ultimately being fixedly connected to the inner end of the movable cavity 210.
[0029] Furthermore, after the rod portion 420 of the limiting screw 400 passes through the guide rod 130 and extends into the movable cavity 210, the rod portion 420 of the limiting screw 400 can move axially back and forth relative to the guide rod 130, and during this process, the damping spring 300 can maintain the guide rod 130 having a tendency to move outward toward the movable cavity 210.
[0030] As can be seen from the above, when the two-wheeled vehicle passes over the high point of a bumpy road, the wheels will quickly rise. Due to inertia, the two-wheeled vehicle will maintain its original height. At this time, the wheels will drive the sleeve 200 upward. During this process, the sleeve 200 will simultaneously drive the limiting screw 400 to move upward, causing the rod 420 of the limiting screw 400 to move axially relative to the guide rod 130. This causes the head 410 of the limiting screw 400 to move upward and compress the shock-absorbing spring 300, thereby compressing and deforming the shock-absorbing spring 300 to play a role in buffering and shock absorption. When the two-wheeled vehicle passes the lowest point of the bumpy road, the shock-absorbing spring 300 will quickly rebound and push the head 410 of the limiting screw 400 toward the inner end of the mounting cavity 131. During this process, the rod 420 of the limiting screw 400 moves axially relative to the guide rod 130, so that the rod 420 of the limiting screw 400 drives the sleeve 200 to move, thereby causing the guide rod 130 to move toward the outside of the movable cavity 210.
[0031] It is worth noting that in conventional damping structures, the damping spring 300 is placed within the sleeve 200. Specifically, the damping spring 300 is positioned between the end of the guide rod 130 furthest from the connector 120 and the inner end of the movable cavity 210. This means the damping spring 300 occupies space below the guide rod 130, and thus occupies space in the movable cavity 210. Even when the guide rod 130 compresses the damping spring 300 to its limit, the spring still retains a certain size that occupies space in the movable cavity 210. Consequently, if a larger damping stroke is required, the sleeve 200 must be lengthened. In contrast, this application places the damping spring 300 within the guide rod 130. The damping spring 300 no longer occupies the travel space of the guide rod 130 within the sleeve 200, allowing the guide rod 130 to fully utilize the space in the movable cavity 210. This results in a larger damping stroke with a smaller overall damping structure size, improving the damping effect.
[0032] In some embodiments, a through hole 132 is provided on the end of the guide rod 130 away from the connector 120. The through hole 132 communicates with the mounting cavity 131. Alternatively, the through hole 132 can be described as being provided on the inner end of the mounting cavity 131. Furthermore, the rod portion 420 of the limiting screw 400 passes through the through hole 132 and extends into the movable cavity 210 to be fixedly connected to the inner end of the movable cavity 210.
[0033] It should be noted that the radial dimension of the through hole 132 is between the radial dimension of the head 410 of the limiting screw 400 and the radial dimension of the rod 420 of the limiting screw 400, so that the through hole 132 can allow the rod 420 of the limiting screw 400 to pass through while blocking the head 410 of the limiting screw 400 from passing through. The rod 420 of the limiting screw 400 achieves axial reciprocating movement relative to the guide rod 130 by axially reciprocating within the through hole 132.
[0034] It is understandable that during the process of the two-wheeled vehicle traveling on a bumpy road, the relative movement between the guide rod 130 and the sleeve 200 is achieved by the axial reciprocating movement of the rod portion 420 of the limiting screw 400 in the through hole 132.
[0035] In some embodiments, a first buffer pad 500 is provided between the head 410 of the limiting screw 400 and the inner end of the mounting cavity 131. The material of the first buffer pad 500 can be elastic rubber or other materials with elastic properties.
[0036] Understandably, when the two-wheeled vehicle passes the low point of a bumpy road, the shock-absorbing spring 300 quickly rebounds and pushes the head 410 of the limiting screw 400 toward the inner end of the mounting cavity 131, thereby causing the limiting screw 400 to drive the sleeve 200 and the wheel to move. During this process, the head 410 of the limiting screw 400 will first contact the first buffer pad 500 and squeeze the first buffer pad 500 until the head 410 of the limiting screw 400 can no longer move further toward the inner end of the mounting cavity 131.
[0037] It should be noted that, through the setting of the first buffer pad 500 in this embodiment, the rebound of the shock-absorbing spring 300 can be better buffered, and the head 410 of the limiting screw 400 is prevented from directly hitting the inner end of the mounting cavity 131, thus avoiding abnormal noise and jerking.
[0038] In some embodiments, a second buffer pad 600 is provided on the inner end of the active cavity 210. The material of the second buffer pad 600 can be elastic rubber or other materials with elastic properties.
[0039] Understandably, when the two-wheeled vehicle passes over the high point of a bumpy road, the shock absorber spring 300 is compressed, and the guide rod 130 moves toward the inner end of the movable cavity 210. During this process, the end of the guide rod 130 away from the connector 120 will first contact the second buffer pad 600 and squeeze the second buffer pad 600 until the guide rod 130 can no longer move further toward the inner end of the movable cavity 210.
[0040] It should be noted that, through the setting of the second buffer pad 600 in this embodiment, the movement of the guide rod 130 in the movable cavity 210 can be better buffered, so as to avoid the end of the guide rod 130 away from the connector 120 directly hitting the inner end of the movable cavity 210 and causing abnormal noise and jerking.
[0041] In some embodiments, the mounting cavity 131 has an opening at the end of the guide rod 130 away from the sleeve 200. The first buffer pad 500, the limiting screw 400, and the shock-absorbing spring 300 are all installed inside the guide rod 130 through the opening of the mounting cavity 131. A fastener 133 is also provided at the end of the guide rod 130 away from the sleeve 200. The fastener 133 can be fixedly installed on the opening of the mounting cavity 131 by means of a threaded connection, so that the fastener 133 can seal the mounting cavity 131.
[0042] It should be noted that during the assembly of the shock-absorbing structure of this embodiment, the fastener 133 is first removed from the opening of the mounting cavity 131, and then the first buffer pad 500, the limiting screw 400 and the shock-absorbing spring 300 are sequentially installed in the mounting cavity 131. Finally, the fastener 133 is screwed onto the opening of the mounting cavity 131 by thread.
[0043] It is understandable that by setting the fastener 133, the first buffer pad 500, the limit screw 400 and the shock-absorbing spring 300 can be better installed and removed in the mounting cavity 131. At the same time, the fastener 133 can also seal the mounting cavity 131 to prevent water and dust from entering the mounting cavity 131.
[0044] In some embodiments, a threaded hole 211 is provided on the inner end of the movable cavity 210, and the rod portion 420 of the limiting screw 400 can be fixed in the threaded hole 211 by means of a threaded connection.
[0045] When assembling the shock-absorbing structure of this embodiment, firstly, the fastener 133 is removed from the opening of the mounting cavity 131. Then, the first buffer pad 500 is placed into the mounting cavity 131, and then the limiting screw 400 is placed into the mounting cavity 131. During this process, the rod portion 420 of the limiting screw 400 passes through the through hole 132 and extends into the movable cavity 210. Afterward, the head 410 of the limiting screw 400 can be rotated using a tool, so that the rod portion 420 of the limiting screw 400 can be threaded and fixed in the threaded hole 211, thereby realizing the fixed installation of the limiting screw 400 in the movable cavity 210. Then, the shock-absorbing spring 300 is placed into the mounting cavity 131, and finally, the fastener 133 is screwed onto the opening of the mounting cavity 131 by thread.
[0046] It is understood that the threaded hole 211 can be directly formed on the inner end of the movable cavity 210, or it can be achieved by fixing a nut with a threaded hole 211 to the inner end of the movable cavity 210. There is no particular limitation on this.
[0047] In some embodiments, a sliding sleeve 212 is fixedly disposed in the movable cavity 210, and the sliding sleeve 212 is fixedly installed in the movable cavity 210 by an interference fit. The sliding sleeve 212 is made of wear-resistant nylon material, and the movable cavity 210 is specifically sleeved on the guide rod 130 through the sliding sleeve 212.
[0048] It should be noted that the guide rod 130 and the sliding sleeve 212 can move relative to each other in the axial direction, thereby enabling the guide rod 130 to reciprocate within the movable cavity 210. Simultaneously, the sliding sleeve 212 provides guidance for the reciprocating movement of the guide rod 130, thus making the movement of the guide rod 130 within the movable cavity 210 more stable.
[0049] In some embodiments, an annular sealing ring 213 is provided at the opening of the movable cavity 210. When the sleeve 200 is sleeved on the guide rod 130 through the movable cavity 210, the sealing ring 213 can seal the gap between the sleeve 200 and the guide rod 130, thereby sealing the movable cavity 210 and effectively preventing water and dust from entering the movable cavity 210.
[0050] In some embodiments, the sleeve 200 has a constricted structure at the opening of the movable cavity 210, which enables the sealing ring 213 to be fixedly installed at the opening of the movable cavity 210. Of course, the sealing ring 213 can also be installed by means of bonding or bolting, etc., and there is no particular limitation on this.
[0051] In some embodiments, a hook 220 is provided on the circumferential outer wall of the sleeve 200, and an installation groove 221 is provided at the position corresponding to the end of the sleeve 200 away from the connector 120. Specifically, the sleeve 200 can be connected and installed to the wheel of a two-wheeled vehicle through the installation groove 221.
[0052] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.
Claims
1. A front shock absorber structure for a two-wheeled vehicle, characterized in that: The device includes a fork with two extended guide rods and a sleeve that can be connected to a wheel. The sleeve has a movable cavity that opens at one end of the sleeve, and the sleeve can be fitted onto the guide rods through the movable cavity. The guide rod has an internal mounting cavity, in which a shock-absorbing spring is placed; A limiting screw is provided in the mounting cavity. The head of the limiting screw abuts against the end of the shock-absorbing spring near the wheel. The rod of the limiting screw can movably pass through the guide rod and is fixedly connected to the inner end of the movable cavity.
2. The front damping structure according to claim 1, characterized in that: A through hole is provided on the inner end of the mounting cavity, and the rod of the limiting screw extends into the movable cavity through the through hole and is fixedly connected to the inner end of the movable cavity.
3. The front damping structure according to claim 1, characterized in that: A first buffer pad is provided between the head of the limiting screw and the inner end of the mounting cavity.
4. The front damping structure according to claim 1, characterized in that: A second buffer pad is provided on the inner end of the movable cavity.
5. The front damping structure according to claim 1, characterized in that: The mounting cavity is open at the end of the guide rod away from the sleeve; a fastener is threadedly connected to the end of the guide rod away from the sleeve, and the fastener is used to seal the mounting cavity.
6. The front damping structure according to claim 2, characterized in that: The rod of the limiting screw is fixedly connected to the inner end of the movable cavity by a thread.
7. The front damping structure according to claim 1, characterized in that: A sliding sleeve is fixedly installed in the movable cavity, and the movable cavity is sleeved on the guide rod through the sliding sleeve.
8. The front damping structure according to claim 1, characterized in that: A sealing ring is provided at the opening of the movable cavity. When the sleeve is fitted onto the guide rod, the sealing ring can seal the gap between the sleeve and the guide rod.
9. The front damping structure according to claim 1, characterized in that: The sleeve is provided with a hook claw, and the hook claw is provided with a mounting groove. The sleeve is connected and installed to the wheel through the mounting groove.
10. The front damping structure according to claim 1, characterized in that: The fork assembly also includes a vertical tube and a connector; one end of the vertical tube is connected to the vehicle body, and the other end is connected to the end of the guide rod away from the sleeve via the connector.