Electric vehicle suspension

Abstract

The utility model discloses an electric vehicle suspension, which belongs to the technical field of suspensions and comprises a hydraulic shock absorber, an electric vehicle supporting rod arranged on the hydraulic shock absorber and used for connecting and supporting, and a shock absorber shaft seal arranged on the hydraulic shock absorber, contacted with the electric vehicle supporting rod and used for preventing hydraulic oil in the hydraulic shock absorber from leaking. According to the utility model, the limitation on the knob can be relieved by rotating the adjusting screw before use, at the moment, the knob can be rotated to adjust the position of the extrusion plate, the spring can be compressed along with the movement of the extrusion plate, the buffer force of the spring can be further adjusted, and when the spring is compressed, the spring can provide better supporting performance; the electric tricycle is more stable in the running process and suitable for being used under the condition of high-speed running or heavy load, on the contrary, when the spring is stretched and reset, the buffering effect of the electric tricycle can be restored so that the electric tricycle can cope with an uneven road surface, and the buffering force of the suspension can be adjusted according to the use condition.

Description

Technical Field

[0001] The utility model relates to the technical field of suspensions, and particularly relates to an electric vehicle suspension. Background Art

[0002] An electric tricycle is a three-wheel transport vehicle powered by a battery and driven by a motor for hauling goods or people. In an electric tricycle, a suspension system usually consists of components such as springs and shock absorbers, which are used to absorb and disperse the impacts and vibrations caused by uneven road surfaces.

[0003] Chinese Patent Publication No. CN221340936U discloses a single-arm front suspension for a tricycle, which includes a support frame, a mounting mechanism, and a shock-absorbing mechanism. The support frame is a U-shaped support frame. The mounting mechanism is arranged at the top of the support frame. The shock-absorbing mechanism includes a hydraulic shock absorber, a limit block, a limit hole, and a guide block. The telescopic rod of the hydraulic shock absorber is fixedly connected to the bottom end of the support frame respectively. The limit block is slidably connected to the outer surface of the telescopic rod of the hydraulic shock absorber through the guide block. The limit holes are respectively arranged on the outer surface of the guide block. In this single-arm front suspension for a tricycle, when the vibration is too large, the contraction distance of the telescopic rod of the hydraulic shock absorber is restricted by the limit block, preventing the telescopic rod from contracting too much and driving the tire to hit the support frame, thus avoiding damage to the tire and the support frame, ensuring that the handlebar automatically returns to the correct position during driving, and preventing the phenomenon that the handlebar deviates during driving and causes the tricycle to run off course.

[0004] However, in the above patent, the buffering force of the spring used for shock absorption and buffering is not easy to adjust. When an electric tricycle is used on different road conditions, as well as when the vehicle is traveling at high speed or under heavy load, if the buffering force is inappropriate, severe jolts may occur during driving, affecting stability. And in the prior art, in order to prevent internal hydraulic oil leakage in the hydraulic shock absorber of an electric tricycle, a rubber shaft seal is usually provided at the connection between the hydraulic shock absorber and the guide rod. In the above patent, the limit block is exactly above the shaft seal of the hydraulic shock absorber. When the hydraulic shock absorber moves, it is easy to drive the rubber shaft seal to hit the limit block, which will cause damage to the rubber shaft seal after long-term use and result in hydraulic oil leakage. Summary of the Utility Model

[0005] Aiming at the above existing technical deficiencies, the purpose of the utility model is to provide an electric vehicle suspension to solve some or all of the problems in the above background art.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An electric vehicle suspension, comprising:

[0008] A hydraulic shock absorber;

[0009] The electric vehicle support rod is arranged on the hydraulic shock absorber for connection and support;

[0010] The shock absorber shaft seal is arranged on the hydraulic shock absorber and contacts the electric vehicle support rod to prevent the hydraulic oil in the hydraulic shock absorber from leaking;

[0011] The electric vehicle connecting frame is arranged on the electric vehicle support rod;

[0012] The spring is sleeved on the electric vehicle support rod. One end of the spring is arranged on the hydraulic shock absorber and is used in cooperation with the hydraulic shock absorber for shock absorption and buffering;

[0013] The adjusting structure is arranged on the spring and is used to adjust the compression degree of the spring;

[0014] The limiting structure is arranged on the electric vehicle connecting frame. The limiting structure is used in cooperation with the adjusting structure to limit the adjusting structure;

[0015] The blocking structure is arranged on the adjusting structure and is used in cooperation with the adjusting structure to limit the moving distance of the hydraulic shock absorber.

[0016] Preferably, the adjusting structure includes:

[0017] The connecting plate is arranged at one end of the hydraulic shock absorber;

[0018] The guiding sleeve rod is arranged on one side of the connecting plate;

[0019] The lead screw is movably installed on the inner wall of the guiding sleeve rod and is used to rotate and slide on the inner wall of the guiding sleeve rod;

[0020] The fixing frame is arranged on the electric vehicle connecting frame and is rotatably installed on the lead screw;

[0021] The extrusion plate is arranged at one end of the spring;

[0022] The threaded hole is opened on the inner wall of the extrusion plate, and the lead screw is threadedly installed in the extrusion plate;

[0023] The knob is arranged at one end of the lead screw;

[0024] The limiting component is arranged on the lead screw to prevent the lead screw from loosening;

[0025] Wherein, the extrusion plate is slidably sleeved on the electric vehicle support rod.

[0026] Preferably, the limiting component includes:

[0027] The limiting plate is arranged at one end of the lead screw;

[0028] A limiting groove is formed on the inner wall of the guiding sleeve rod, and the limiting plate is slidably installed in the limiting groove to provide a moving space for the limiting plate;

[0029] An annular rotating groove is formed on the inner wall of the fixed frame;

[0030] A limiting ring is sleeved on the lead screw, and the limiting ring is rotatably installed in the annular rotating groove;

[0031] Wherein, the annular rotating groove and the limiting ring are used in cooperation to prevent the lead screw from loosening from the fixed frame.

[0032] Preferably, the adjusting structure further includes a guiding component arranged on the pressing plate to guide the moving direction of the pressing plate.

[0033] Preferably, the guiding component includes:

[0034] A guiding block is arranged on one side of the pressing plate;

[0035] A guiding hole is formed on the inner wall of the guiding block;

[0036] A guiding rod is slidably installed in the guiding hole;

[0037] Wherein, one end of the guiding rod is arranged on one side of the connecting plate.

[0038] Preferably, the limiting structure includes:

[0039] An L-shaped plate is arranged on the fixed frame;

[0040] An adjusting screw hole is formed on the inner wall of the L-shaped plate;

[0041] An adjusting screw is threadedly installed in the adjusting screw hole;

[0042] An abutting block is arranged at one end of the adjusting screw;

[0043] Wherein, the abutting block is in contact with the knob to press and fix the position of the knob.

[0044] Preferably, the blocking structure includes:

[0045] A threaded collar is threadedly sleeved on the lead screw, and a thread adapted to the lead screw is formed on the inner wall of the threaded collar;

[0046] A rubber pad is arranged on one side of the threaded collar;

[0047] Wherein, the rubber pad is located above the guiding sleeve rod, and the rubber pad is movably sleeved on the lead screw.

[0048] The beneficial effects of the present utility model are as follows:

[0049] In this utility model, before use, the restriction on the knob can be released by rotating the adjusting screw. At this time, rotating the knob can adjust the position of the extrusion plate. As the extrusion plate moves, the spring can be compressed, and thus the buffering force of the spring can be adjusted. When the spring is compressed, it can provide better support, making the vehicle more stable during driving. It is suitable for use when the electric tricycle is driving at high speed or under heavy load. On the contrary, when the spring stretches and resets, its buffering effect can be restored to cope with the use on uneven roads, so that the buffering force of this suspension can be adjusted according to the usage situation.

[0050] In this utility model, when the electric tricycle vibrates too much during driving, the movement distance of the hydraulic shock absorber can be restricted by setting the threaded sleeve ring and the rubber pad, so that the wheel can be prevented from hitting the electric vehicle connecting frame due to vibration. And the threaded sleeve ring is arranged on the side of the hydraulic shock absorber. Compared with being arranged above the shock absorber shaft seal, it can prevent damage to the shock absorber shaft seal. Brief Description of the Drawings

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0052] Figure 1 It is a schematic structural diagram of an electric vehicle suspension provided by an embodiment of the present utility model;

[0053] Figure 2 It is a schematic structural diagram of a threaded sleeve ring of an electric vehicle suspension provided by an embodiment of the present utility model;

[0054] Figure 3 It is a schematic structural diagram of an extrusion plate of an electric vehicle suspension provided by an embodiment of the present utility model;

[0055] Figure 4 It is a schematic cross-sectional structural diagram of a guide sleeve rod of an electric vehicle suspension provided by an embodiment of the present utility model.

[0056] Explanation of the Reference Numerals in the Drawings:

[0057] 1. Hydraulic shock absorber; 2. Electric vehicle support rod; 3. Shock absorber shaft seal; 4. Electric vehicle connecting frame; 5. Spring; 6. Connecting plate; 601. Guide sleeve rod; 602. Lead screw; 603. Fixed frame; 604. Extrusion plate; 605. Threaded hole; 606. Knob; 607. Limiting plate; 608. Limiting groove; 609. Annular rotating groove; 610. Limiting ring; 611. Guide block; 612. Guide hole; 613. Guide rod; 7. L-shaped plate; 701. Adjusting screw hole; 702. Adjusting screw; 703. Contact block; 8. Threaded sleeve ring; 801. Rubber pad. Detailed implementation mode

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0059] Embodiment 1:

[0060] As Figures 1 to 4 shown, the present invention provides an electric vehicle suspension, including: a hydraulic shock absorber 1, an electric vehicle support rod 2 arranged on the hydraulic shock absorber 1 for connection and support, a shock absorber shaft seal 3 arranged on the hydraulic shock absorber 1 and in contact with the electric vehicle support rod 2 to prevent hydraulic oil leakage in the hydraulic shock absorber 1, an electric vehicle connecting frame 4 arranged on the electric vehicle support rod 2, a spring 5 sleeved on the electric vehicle support rod 2 for shock absorption and buffering, one end of the spring 5 is arranged on the hydraulic shock absorber 1, and the spring 5 is used in cooperation with the hydraulic shock absorber 1.

[0061] In order to enable the buffering force of the suspension to be adjusted according to different road conditions and the use conditions of the vehicle at high speed and under heavy load, an adjustment structure for adjusting the compression degree of the spring 5 is arranged on the spring 5, and a limiting structure for limiting the adjustment structure is arranged on the electric vehicle connecting frame 4, and the limiting structure is used in cooperation with the adjustment structure.

[0062] Among them, the adjusting structure includes a connecting plate 6 arranged at one end of the hydraulic shock absorber 1, a guiding sleeve rod 601 arranged on one side of the connecting plate 6, a lead screw 602 movably installed on the inner wall of the guiding sleeve rod 601 for rotating and sliding on the inner wall of the guiding sleeve rod 601, a fixing frame 603 arranged on the electric vehicle connecting frame 4, the fixing frame 603 is rotatably installed on the lead screw 602, a pressing plate 604 arranged at one end of the spring 5, the pressing plate 604 is slidably sleeved on the electric vehicle support rod 2, a threaded hole 605 opened on the inner wall of the pressing plate 604, the lead screw 602 is threadedly installed in the pressing plate 604, a knob 606 arranged at one end of the lead screw 602, a limiting component arranged on the lead screw 602 for preventing the lead screw 602 from loosening. When the hydraulic shock absorber 1 moves, it can drive the guiding sleeve rod 601 to move. At the same time, the moving hydraulic shock absorber 1 will move on the electric vehicle support rod 2 and compress the spring 5 through cooperation with the pressing plate 604 to buffer and dampen vibration. Rotating the knob 606 can drive the corresponding lead screw 602 to rotate. When the lead screw 602 rotates, it will drive the pressing plate 604 to move vertically through threaded cooperation with the threaded hole 605. The moving pressing plate 604 will slide on the electric vehicle support rod 2 and compress the spring 5, thereby adjusting the buffering force of the spring 5.

[0063] Specifically, the limiting component includes a limiting plate 607 arranged at one end of the lead screw 602, a limiting groove 608 opened on the inner wall of the guiding sleeve rod 601 for providing a moving space for the limiting plate 607, the limiting plate 607 is slidably installed in the limiting groove 608, an annular rotating groove 609 opened on the inner wall of the fixing frame 603, a limiting ring 610 sleeved on the lead screw 602, the limiting ring 610 is rotatably installed in the annular rotating groove 609, and the annular rotating groove 609 and the limiting ring 610 are used in cooperation to prevent the lead screw 602 from loosening from the fixing frame 603. When the lead screw 602 rotates, it will drive the limiting ring 610 to rotate in the annular rotating groove 609, thereby avoiding the lead screw 602 from shifting. When the hydraulic shock absorber 1 moves, it can drive the guiding sleeve rod 601 to move, so that the guiding sleeve rod 601 moves on the limiting plate 607 and the lead screw 602 through the limiting groove 608.

[0064] Among them, the adjusting structure further includes a guiding component for guiding the moving direction of the pressing plate 604, and the guiding component is arranged on the pressing plate 604.

[0065] Specifically, the guiding component includes a guiding block 611 arranged on one side of the pressing plate 604, a guiding hole 612 opened on the inner wall of the guiding block 611, a guide rod 613 slidably installed in the guiding hole 612, one end of the guide rod 613 is arranged on one side of the connecting plate 6. The moving pressing plate 604 will drive the guiding blocks 611 on both sides to move, so that the guiding blocks 611 slide on the guide rod 613 through the guiding holes 612, thereby restricting the moving direction of the pressing plate 604.

[0066] Among them, the limiting structure includes an L-shaped plate 7 arranged on the fixed frame 603, an adjustment screw hole 701 opened on the inner wall of the L-shaped plate 7, an adjustment screw 702 threadedly installed in the adjustment screw hole 701, a resisting block 703 arranged at one end of the adjustment screw 702, and the resisting block 703 is in contact with the knob 606 for squeezing and fixing the position of the knob 606. By rotating the adjustment screw 702 at the corresponding position, the resisting block 703 can be driven to disengage from the squeezing of the knob 606, thereby releasing the restriction on the knob 606.

[0067] Embodiment 2:

[0068] On the basis of Embodiment 1, in order to prevent collisions between the tire and the electric vehicle connecting frame 4 when the vibration is too large, a blocking structure for restricting the moving distance of the hydraulic shock absorber 1 is arranged on the adjustment structure, and the blocking structure is used in cooperation with the adjustment structure.

[0069] Among them, the blocking structure includes a threaded collar 8 threadedly sleeved on the lead screw 602. The inner wall of the threaded collar 8 is provided with threads adapted to the lead screw 602. A rubber pad 801 is arranged on one side of the threaded collar 8. The rubber pad 801 is located above the guide sleeve rod 601 and is movably sleeved on the lead screw 602. If the vibration is too large, moving the guide sleeve rod 601 can squeeze the rubber pad 801 on one side of the threaded collar 8, thereby restricting the moving distance of the hydraulic shock absorber 1. By rotating the threaded collar 8, the buffering distance of the hydraulic shock absorber 1 can be adjusted.

[0070] Working principle:

[0071] During the driving process of the electric tricycle, when the tire vibrates due to driving on an uneven road surface, the tire will drive the hydraulic shock absorbers 1 on both sides to move. When the hydraulic shock absorbers 1 move, they can drive the guide sleeve rod 601 to move, so that the guide sleeve rod 601 moves on the limit plate 607 and the screw rod 602 through the limit groove 608. Since the screw rod 602 is restricted by the positions of the annular rotating groove 609 and the limit ring 610, it will not move together with the guide sleeve rod 601. At the same time, the moving hydraulic shock absorber 1 will move on the electric vehicle support rod 2 and compress the spring 5 through the cooperation with the pressing plate 604 to buffer and dampen the shock. If the vibration is too large, the moving guide sleeve rod 601 can finally squeeze on the rubber pad 801 on one side of the threaded collar 8. At the same time, the hydraulic shock absorber 1 will also be restricted by the guide sleeve rod 601 and the threaded collar 8, thereby restricting the moving distance of the hydraulic shock absorber 1 and preventing the tire from hitting the electric vehicle connecting frame 4. And by rotating the threaded collar 8, it can move on the screw rod 602 through the threaded cooperation with the screw rod 602, and the distance between the threaded collar 8 and the guide sleeve rod 601 can be adjusted, thereby being able to adjust the buffering distance of the hydraulic shock absorber 1. Before driving, by rotating the adjusting screws 702 on both sides, they can rotate and move in the adjusting screw holes 701 on the L-shaped plate 7, so that the moving adjusting screws 702 drive the abutting blocks 703 to release the extrusion on the knob 606. At this time, the restriction on the knob 606 can be released. Then, by rotating the knobs 606 on both sides, the corresponding screw rods 602 can be driven to rotate. When the screw rods 602 rotate, they will drive the limit ring 610 to rotate in the annular rotating groove 609, thereby being able to prevent the screw rods 602 from shifting. The continuously rotating screw rods 602 can drive the pressing plate 604 to move vertically through the threaded cooperation with the threaded holes 605. The continuously moving pressing plate 604 will slide on the electric vehicle support rod 2 and compress the spring 5, thereby adjusting the buffering force of the spring 5. After adjustment, the adjusting screw 702 can be rotated in the reverse direction to drive the abutting block 703 to abut against the knob 606 again to prevent the knob 606 from loosening.

[0072] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these changes and modifications.

Claims

1. An electric vehicle suspension, characterized in that, Comprising: A hydraulic shock absorber (1); An electric vehicle support rod (2), arranged on the hydraulic shock absorber (1) for connection and support; A shock absorber shaft seal (3), arranged on the hydraulic shock absorber (1) and in contact with the electric vehicle support rod (2) to prevent leakage of hydraulic oil in the hydraulic shock absorber (1); An electric vehicle connecting frame (4), arranged on the electric vehicle support rod (2); A spring (5), sleeved on the electric vehicle support rod (2), with one end of the spring (5) arranged on the hydraulic shock absorber (1) and used in cooperation with the hydraulic shock absorber (1) for shock absorption and buffering; An adjusting structure, arranged on the spring (5) for adjusting the compression degree of the spring (5); A limiting structure, arranged on the electric vehicle connecting frame (4), and the limiting structure is used in cooperation with the adjusting structure to limit the adjusting structure; A blocking structure, arranged on the adjusting structure and used in cooperation with the adjusting structure to limit the moving distance of the hydraulic shock absorber (1).

2. The electric vehicle suspension according to claim 1, characterized in that The adjusting structure includes: A connecting plate (6), arranged at one end of the hydraulic shock absorber (1); A guiding sleeve rod (601), arranged on one side of the connecting plate (6); A lead screw (602), movably installed on the inner wall of the guiding sleeve rod (601) for rotation and sliding on the inner wall of the guiding sleeve rod (601); A fixing frame (603), arranged on the electric vehicle connecting frame (4), and the fixing frame (603) is rotatably installed on the lead screw (602); An extrusion plate (604), arranged at one end of the spring (5); A threaded hole (605), opened on the inner wall of the extrusion plate (604), and the lead screw (602) is threadedly installed in the extrusion plate (604); A knob (606), arranged at one end of the lead screw (602); A limiting component, arranged on the lead screw (602) to prevent the lead screw (602) from loosening; Wherein, the extrusion plate (604) is slidably sleeved on the electric vehicle support rod (2).

3. The electric vehicle suspension according to claim 2, wherein, The limiting component includes: A limiting plate (607), arranged at one end of the lead screw (602); A limiting groove (608), opened on the inner wall of the guiding sleeve rod (601), and the limiting plate (607) is slidably installed in the limiting groove (608) to provide a moving space for the limiting plate (607); An annular rotating groove (609), opened on the inner wall of the fixing frame (603); A limiting ring (610), sleeved on the lead screw (602), and the limiting ring (610) is rotatably installed in the annular rotating groove (609); Wherein, the annular rotating groove (609) is used in cooperation with the limiting ring (610) to prevent the lead screw (602) from loosening from the fixing frame (603).

4. The electric vehicle suspension according to claim 1, characterized in that, The adjusting structure further includes a guiding component, and the guiding component is arranged on the extrusion plate (604) to guide the moving direction of the extrusion plate (604).

5. The electric vehicle suspension according to claim 4, characterized in that, The guiding component includes: A guiding block (611), arranged on one side of the extrusion plate (604); A guiding hole (612), opened on the inner wall of the guiding block (611); A guiding rod (613), slidably installed in the guiding hole (612); Wherein, one end of the guiding rod (613) is arranged on one side of the connecting plate (6).

6. The electric vehicle suspension according to claim 1, wherein, The limiting structure includes: an L-shaped plate (7) arranged on a fixing frame (603); an adjusting screw hole (701) opened on the inner wall of the L-shaped plate (7); an adjusting screw rod (702) threadedly installed in the adjusting screw hole (701); a resisting block (703) arranged at one end of the adjusting screw rod (702); wherein, the resisting block (703) is in contact with the knob (606) and is used for squeezing and fixing the position of the knob (606).

7. An electric vehicle suspension according to claim 1, characterized in that The blocking structure includes: a threaded collar (8) threadedly sleeved on a lead screw (602), and a thread adapted to the lead screw (602) is opened on the inner wall of the threaded collar (8); a rubber pad (801) arranged on one side of the threaded collar (8); wherein, the rubber pad (801) is located above the guide sleeve rod (601), and the rubber pad (801) is movably sleeved on the lead screw (602).

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