Adjustable shock absorber for electric vehicle

Abstract

The present application relates to the technical field of shock absorbers for electric vehicles, and in particular to an adjustable shock absorber for electric vehicles, comprising a front fork frame, wherein the front fork frame is equipped with a shock absorber cylinder and a shock absorber rod, and is characterized in that: one end of the shock absorber rod is resettably inserted and slidably arranged in the shock absorber cylinder, the bottom of the shock absorber rod has a slider adapted to the inner wall of the shock absorber cylinder, and the slider divides the interior of the shock absorber cylinder from top to bottom into a first chamber and a second chamber; the shock absorber cylinder has a reflux channel from the first chamber to the second chamber, and a fluid pipe with an adjustable cross-sectional shape is provided in the reflux channel. The invention has the following effects: during the movement of the shock absorber rod, the slider on the lower side will be driven to move, and during the movement, the hydraulic oil in the first chamber will flow back to the second chamber. Under different terrain or road conditions, the cross-sectional shape of the fluid pipe can be adjusted to adjust the resistance to the movement of the hydraulic oil, thereby adjusting the rebound speed of the shock absorber rod.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle shock absorbers, and in particular to an adjustable shock absorber for an electric vehicle. Background Art

[0002] In order to improve the overall passability of vehicles on the road, a corresponding shock absorber structure will be set. The shock absorber on the front fork of the electric vehicle is generally a hydraulic damping shock absorber. The hydraulic damping shock absorber is usually equipped with a shock absorber rod. In order to better seal the hydraulic oil, a sealing rubber ring is often provided.

[0003] When electric vehicles use hydraulic damping shock absorption devices, often part of the shock absorber rod slides back and forth with the shock absorber to filter different road conditions. However, under different road conditions, the hardness of the shock absorber needs to be changed to obtain a better driving experience. Summary of the Invention

[0004] In order to be able to adjust the softness and hardness of the shock absorber, the present application provides an adjustable shock absorber for an electric vehicle.

[0005] The present application provides an adjustable shock absorber for an electric vehicle, which adopts the following technical solution: an adjustable shock absorber for an electric vehicle, comprising a front fork frame, wherein the front fork frame is equipped with a shock absorber cylinder and a shock absorber rod, one end of the shock absorber rod is resettably inserted and slidably arranged in the shock absorber cylinder, the bottom of the shock absorber rod has a slider adapted to the inner wall of the shock absorber cylinder, and the slider divides the interior of the shock absorber cylinder from top to bottom into a first chamber and a second chamber; the shock absorber cylinder has a reflux channel from the first chamber to the second chamber, and a liquid pipe with an adjustable cross-sectional shape is arranged in the reflux channel.

[0006] By adopting the above technical solution, during the movement of the shock absorber rod, the lower slider will be driven to move, and during the movement, the hydraulic oil in the first chamber will flow back to the second chamber. Under different terrain or road conditions, the cross-sectional shape of the fluid pipe can be adjusted to adjust the resistance of the hydraulic oil movement, thereby adjusting the rebound speed of the shock absorber rod.

[0007] Preferably, two adjusting springs are symmetrically provided on the outer wall of the liquid flow tube, and the shock-absorbing cylinder is provided with a pressing piece for squeezing the two adjusting springs.

[0008] By adopting the above technical solution, the extrusion of the spring can make the cross-sectional shape of the liquid flow, thereby restricting the flow of the liquid. For example, after the two adjusting springs are clamped, a long and narrow flow channel will be formed, which will make the liquid flow difficult and the relative shock absorber will become harder.

[0009] Preferably, the pressing member includes two pressing blocks along a direction perpendicular to the liquid flow pipe.

[0010] By adopting the above technical solution, the adjusting pressing block is squeezed by the top pressing block, thereby performing adjustment.

[0011] Preferably, the shock-absorbing cylinder is rotatably connected to a driving threaded rod, the driving threaded rod has two sections of opposite threads, and two top pressure blocks are respectively threadedly connected to the two ends of the driving threaded rod.

[0012] By adopting the above technical solution, the two pressing blocks are caused to slide by rotating the driving threaded rod. Since the threads are opposite, the two pressing blocks will move relative to or away from each other.

[0013] Preferably, the shock-absorbing cylinder has a track for the end portion of the top pressure block to slide.

[0014] By adopting the above technical solution, the top pressure block is limited by the track and can only slide within the track.

[0015] Preferably, a first top plate is provided at the top of the shock-absorbing rod located in the shock-absorbing cylinder, and a second top plate is provided in the shock-absorbing cylinder for the shock-absorbing rod to pass through. A shock-absorbing spring is provided on the shock-absorbing rod, and both ends of the shock-absorbing spring are respectively in contact with the first top plate and the second top plate.

[0016] By adopting the above technical solution, the shock-absorbing spring will be compressed or stretched between the first top plate and the second top plate as the shock-absorbing rod moves.

[0017] Preferably, a limiting structure for circumferentially limiting the liquid flow tube is provided in the shock-absorbing cylinder.

[0018] By adopting the above technical solution, the limiting structure can limit the liquid flow tube in the circumferential direction, thereby achieving a better adjustment effect.

[0019] Preferably, the limiting structure includes an insertion rod arranged on the outer wall of the liquid flow tube, and the insertion rod is inserted and slidably moved on the shock-absorbing cylinder.

[0020] By adopting the above technical solution, the insertion rod can form a circumferential limit in the circumferential direction. At the same time, during the deformation process, the insertion rod can also slide in the radial direction to form a radial upper limit and guidance.

[0021] To sum up, the present application includes at least one of the following beneficial technical effects: during the movement of the shock absorber rod, the lower slider will be driven to move, and during the movement, the hydraulic oil in the first chamber will flow back to the second chamber. Under different terrain or road conditions, the cross-sectional shape of the fluid pipe can be adjusted to adjust the resistance of the hydraulic oil movement, thereby adjusting the rebound speed of the shock absorber rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the structure of this application;

[0023] Figure 2 It is a schematic diagram of the structure of the shock-absorbing cylinder and the shock-absorbing rod in this application;

[0024] Figure 3 It is a structural diagram of the reflux channel;

[0025] Figure 4 This is a side view of the fluid tube on the other side, used to show the insertion rod.

[0026] Explanation of the accompanying reference numerals: 100, front fork frame; 110, shock absorber cylinder; 120, shock absorber rod; 121, first top plate; 122, second top plate; 130, shock absorber spring; 131, slider; 132, first cavity; 133, second cavity; 140, reflux channel; 141, liquid flow pipe; 142, reflux chamber; 150, adjusting spring; 160, top pressure block; 200, driving threaded rod; 210, track; 220, insertion rod. Implementation Method

[0027] The present application is further described in detail below with reference to the accompanying drawings.

[0028] The present application discloses an adjustable shock absorber for an electric vehicle. Figure 1 、 Figure 2 , including a front fork frame 100, which is equipped with a shock absorber cylinder 110 and a shock absorber rod 120. One end of the shock absorber rod 120 is resettably inserted and slidably arranged in the shock absorber cylinder 110. The top of the shock absorber rod 120 located in the shock absorber cylinder 110 is provided with a first top plate 121. The shock absorber cylinder 110 has a second top plate 122 for the shock absorber rod 120 to pass through. A shock absorber spring 130 is sleeved on the shock absorber rod 120, and the two ends of the shock absorber spring 130 are respectively abutted against the first top plate 121 and the second top plate 122. During the movement, when the shock absorber rod 120 moves downward, the first top plate 121 and the second top plate 122 can compress the shock absorber spring 130. At the same time, in order to form a damping effect, hydraulic oil is also injected into the shock absorber cylinder 110.

[0029] Reference Figure 2 The bottom of the shock absorber rod 120 has a slider 131 adapted to the inner wall of the shock absorber cylinder 110. The slider 131 can maintain a seal with the inner wall of the shock absorber cylinder 110 during the sliding process. The slider 131 divides the interior of the shock absorber cylinder 110 from top to bottom into a first chamber 132 and a second chamber 133. The shock absorber cylinder 110 has a reflux channel 140 from the first chamber 132 to the second chamber 133. In this embodiment, the shock absorber cylinder 110 has a separate reflux chamber 142. The reflux channel 140 is arranged in this reflux chamber 142. At the same time, a liquid flow tube 141 with an adjustable cross-sectional shape is provided in the reflux channel 140.

[0030] Reference Figure 2 、 Figure 3 Two adjusting springs 150 are symmetrically provided on the outer wall of the liquid flow tube 141. In this embodiment, the adjusting springs 150 are metal sheets with good deformation effect. In this embodiment, the middle part of the liquid flow tube 141 except the adjusting springs 150 is a rubber deformable part, and the shock absorber cylinder 110 is provided with a top pressure piece for squeezing the two adjusting springs 150.

[0031] The pressure member includes two pressure blocks 160 arranged perpendicular to the fluid flow tube 141. The shock absorber 110 is rotatably connected to a drive threaded rod 200, one end of which is exposed. The drive threaded rod 200 has two oppositely threaded sections, and the two pressure blocks 160 are respectively threadedly connected to the ends of the drive threaded rod 200. Within the shock absorber 110, there is a track 210 for the ends of the pressure blocks 160 to slide. The track 210 is arranged in parallel, and the pressure blocks 160 only slide within the track 210. When the drive threaded rod 200 rotates, it will drive the two pressure blocks 160 to move relative to or away from each other.

[0032] During relative motion, the pressure of the push block 160 flattens the flow channel. As the shock absorber rod 120 moves, the flow of hydraulic oil from the first chamber 132 to the second chamber 133 is obstructed, effectively stiffening the shock absorber. When the push block 160 moves away from the first chamber 132, the hydraulic oil returns to its original position due to the elasticity of the adjustment spring 150. It is worth noting that the arc-shaped cross-section of the flow channel allows for guidance even under high-resistance flow conditions, preventing significant destructive force.

[0033] Reference Figure 3 、 Figure 4 To limit the circumferential position of the entire liquid flow tube 141, a limiting structure for the circumferential position of the liquid flow tube is provided within the shock absorber cylinder 110. The limiting structure includes an insertion rod 220 disposed on the outer wall of the liquid flow tube. The insertion rod 220 is inserted and slidably connected to the shock absorber cylinder 110, that is, inserted into the inner wall of the return chamber 142. The insertion rod 220 has two functions: one is to provide circumferential limiting, so that the top pressure block 160 can align with the adjustment spring 150; the other function is that during the clamping process, the insertion rod 220 will slide along its length to adapt to the movement of the adjustment spring 150.

[0034] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An adjustable shock absorber for an electric vehicle, comprising a front fork frame (100), wherein the front fork frame (100) is equipped with a shock absorbing cylinder (110) and a shock absorbing rod (120), characterized in that: One end of the shock-absorbing rod (120) is resettably inserted and slidably arranged in the shock-absorbing cylinder (110); the bottom of the shock-absorbing rod (120) has a slider (131) adapted to the inner wall of the shock-absorbing cylinder (110); the slider (131) divides the interior of the shock-absorbing cylinder (110) from top to bottom into a first cavity (132) and a second cavity (133); The shock-absorbing cylinder (110) has a reflux channel (140) from the first cavity (132) to the second cavity (133), and a liquid flow tube (141) with an adjustable cross-sectional shape is provided in the reflux channel (140); Two adjusting springs (150) are symmetrically provided on the outer wall of the liquid flow tube (141), and the shock-absorbing cylinder (110) is provided with a pressing piece for pressing the two adjusting springs (150); The pressing member comprises two pressing blocks (160) in a direction perpendicular to the liquid flow pipe (141); The shock-absorbing cylinder (110) is rotatably connected to a driving threaded rod (200), wherein the driving threaded rod (200) has two sections of opposite threads, and two top pressure blocks (160) are respectively threadedly connected to the two ends of the driving threaded rod (200); The shock-absorbing cylinder (110) is provided with a track (210) for the end of the pressing block (160) to slide.

2. The adjustable shock absorber for an electric vehicle according to claim 1, characterized in that: A first top plate (121) is provided at the top of the portion of the shock-absorbing rod (120) located inside the shock-absorbing cylinder (110), and a second top plate (122) is provided inside the shock-absorbing cylinder (110) for the shock-absorbing rod (120) to pass through. A shock-absorbing spring (130) is sleeved on the shock-absorbing rod (120), and two ends of the shock-absorbing spring (130) are respectively in contact with the first top plate (121) and the second top plate (122).

3. The adjustable shock absorber for an electric vehicle according to claim 2, characterized in that: A limiting structure for circumferentially limiting the liquid flow tube (141) is provided in the shock-absorbing cylinder (110).

4. The adjustable shock absorber for an electric vehicle according to claim 3, characterized in that: The limiting structure comprises an insertion rod (220) arranged on the outer wall of the liquid flow tube (141), and the insertion rod (220) is inserted and slidably moved on the shock-absorbing cylinder (110).

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