Electric vehicle double-spring rear shock absorber capable of being separately adjusted

Abstract

The utility model discloses an electric vehicle double-spring rear shock absorber capable of being separately adjusted, which relates to the technical field of shock absorbers and comprises a hydraulic cylinder, a first spring is movably connected to the outside of the hydraulic cylinder, a first connecting block is movably connected to the top end of the first spring, and a fixing head is arranged above the first connecting block. The lower portion of the hydraulic cylinder is movably connected with a rotating head, the bottom end of the rotating head is fixedly connected with a base, and the bottom end of the hydraulic cylinder is movably connected with a rod-shaped assembly convenient to disassemble and replace. According to the electric vehicle double-spring rear shock absorber capable of being separately adjusted, a piston, a second spring, a second connecting block, a first connector, a first threaded connector, a second connector and a second threaded connector are arranged, the second connecting block is installed on a rotating head, and the first threaded connector is connected with the first connector at the top end of the second connecting block; and the second screwed joint is connected into a second interface at the top end of the piston to install the piston, so that the problem that the device does not have the function of independent installation and adjustment is solved.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, specifically to a dual-spring rear shock absorber for electric vehicles that can be adjusted separately. Background Technology

[0002] Shock absorbers are used to suppress the oscillations caused by the rebound of the spring after absorbing shocks and the impact from the road surface. In order to accelerate the attenuation of vibrations of the frame and body and improve the ride smoothness of the car, when driving over uneven roads, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will still have reciprocating motion, and the shock absorber is used to suppress this spring jumping.

[0003] Currently, the most common double-spring shock absorbers used in electric vehicles typically have two independent springs and damping mechanisms. This design provides better damping effect and adaptability, as the two springs can be adjusted separately, allowing the shock absorber to be adjusted according to different road conditions and load conditions to achieve the best damping effect. However, there are some inconveniences in actual operation, and there is room for improvement. For example, when it is necessary to adjust the rear shock absorber according to the usage scenario, since the two springs in the double-spring rear shock absorber are usually an integrated structure, it is difficult to adjust one of the spring components individually, thereby reducing the maintenance efficiency when inspecting the rear shock absorber. It does not have the function of independent installation and adjustment.

[0004] Now, a novel, separately adjustable double-spring rear shock absorber for electric vehicles is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a separately adjustable double-spring rear shock absorber for electric vehicles, in order to solve the problem mentioned in the background art that it does not have the function of independent installation and adjustment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a separably adjustable double-spring rear shock absorber for electric vehicles, comprising a hydraulic cylinder, a first spring movably connected to the outside of the hydraulic cylinder, a first connecting block movably connected to the top of the first spring, a fixed head disposed above the first connecting block, a rotating head movably connected to the bottom of the hydraulic cylinder, a base fixedly connected to the bottom of the rotating head, and a rod-shaped assembly movably connected to the bottom of the hydraulic cylinder for easy disassembly and replacement.

[0007] The rod-shaped assembly includes a piston, which is movably connected to the bottom end of a hydraulic cylinder. A second spring is movably connected to the outside of the piston. A second connecting block is located below the piston. A first interface is fixedly connected to the top end of the second connecting block. A first threaded connector is fixedly connected to the bottom end of the piston. A second interface is provided at the top end of the piston. A second threaded connector is provided at the bottom end of the hydraulic cylinder.

[0008] As a further technical solution of this utility model, the shape and size inside the second interface are adapted to the shape and size outside the second threaded connector, and the shape and size of the first interface and the first threaded connector correspond one-to-one.

[0009] As a further technical solution of this utility model, the external shape and size of the piston are adapted to the internal shape and size of the hydraulic cylinder, and the piston can move up and down inside the hydraulic cylinder.

[0010] As a further technical solution of this utility model, the second spring and the first spring are made of the same material, and the second spring and the first spring are connected.

[0011] As a further technical solution of this utility model, a first positioning rod is welded to the left and right sides of the rotating head, an outer sleeve is fixedly connected inside the first positioning rod, a movable rod is movably connected inside the outer sleeve, and a second positioning rod is welded to the left and right sides of the hydraulic cylinder.

[0012] As a further technical solution of this utility model, the shape and size of the outer side of the movable rod are adapted to the shape and size of the inner side of the outer sleeve, the movable rod can move up and down inside the outer sleeve, and there is a distance between the outer sleeve and the first spring.

[0013] As a further technical solution of this utility model, the top end of the first connecting block is movably connected to a movable head, the inside of the movable head is movably connected to an extension rod, the top end of the extension rod is provided with a third interface, and the bottom end of the fixed head is provided with a third threaded joint.

[0014] As a further technical solution of this utility model, the external shape and size of the extension rod are adapted to the internal shape and size of the movable head, and the shape and size of the third interface and the third threaded connector correspond one-to-one.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the separately adjustable electric vehicle double spring rear shock absorber not only realizes the function of independent installation and adjustment, but also realizes the function of deceleration protection, and also realizes the function of height adjustment;

[0016] (1) By setting up a piston, a second spring, a second connecting block, a first interface, a first threaded joint, a second interface, and a second threaded joint, the fixing head on the first connecting block at the top of the hydraulic cylinder is installed at the rear tire of the electric vehicle, and the rotating head and the base are installed together. At the same time, the tension of the first spring outside the hydraulic cylinder is adjusted by rotating the first connecting block. Then, the second connecting block is installed on the rotating head, and the piston is fixed on the second connecting block by connecting the first threaded joint at the bottom of the piston and the first interface at the top of the second connecting block. Then, the second threaded joint at the bottom of the hydraulic cylinder is connected to the second interface at the top of the piston, so that the piston and the piston are connected and fixed. While the piston moves inside the hydraulic cylinder, the second spring outside the piston and the first spring outside the hydraulic cylinder work together to provide a double shock absorption effect for the electric vehicle. The separate installation of the piston allows the first spring and the second spring to be adjusted separately, avoiding the inconvenience of maintenance caused by the double springs being installed together. The double spring rear shock absorber can be adjusted according to different road conditions and load conditions, and the shock absorption effect is better. It realizes the function of independent installation and adjustment.

[0017] (2) By setting a first positioning rod, an outer sleeve, a movable rod, and a second positioning rod, the first spring outside the hydraulic cylinder and the second spring outside the piston work together to dampen the electric vehicle in motion. At the same time, while the first spring outside the hydraulic cylinder is compressed, the movable rod inside the second positioning rod on the left and right sides of the hydraulic cylinder moves in the outer sleeve inside the first positioning rod on the left and right sides of the piston. This allows the first spring to be locked while buffering some of the pressure, avoiding damage to the first spring in the rear shock absorber due to excessive pressure. This provides better overall protection for the double-spring rear shock absorber, extends the service life of the device, and realizes the function of deceleration protection.

[0018] (3) By setting up a movable head, an extension rod, a third interface, and a third threaded joint, the double spring rear shock absorber is installed on the side of the rear tire of the electric vehicle through the fixed head and the base. When the height of the shock absorber is insufficient during installation, the movable head at the top of the first connecting block is adjusted, and the extension rod inside the movable head can extend the overall installation height of the shock absorber. Then, the third threaded joint at the bottom of the fixed head and the third interface at the top of the extension rod are connected, so that the fixed head is installed on the first connecting block through the movable head. The height of the double spring rear shock absorber can be adjusted, which is convenient for adapting to different models of electric vehicles for different usage scenarios. It has stronger applicability and realizes the function of adjustable height. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present utility model;

[0020] Figure 2 This is a front view diagram of the piston mounting structure of this utility model after an explosion;

[0021] Figure 3 This is a top view schematic diagram of the hydraulic cylinder structure of this utility model;

[0022] Figure 4 This is an enlarged front view of the fixed head installation structure of this utility model.

[0023] In the diagram: 1. Hydraulic cylinder; 2. First spring; 3. First connecting block; 4. Fixed head; 5. Rotating head; 6. Base; 7. Piston; 8. Second spring; 9. Second connecting block; 10. First interface; 11. First threaded connector; 12. Second interface; 13. Second threaded connector; 14. First positioning rod; 15. Outer sleeve; 16. Movable rod; 17. Second positioning rod; 18. Movable head; 19. Extension rod; 20. Third interface; 21. Third threaded connector. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1-4 A separable adjustable double-spring rear shock absorber for electric vehicles includes a hydraulic cylinder 1, a first spring 2 externally connected to the hydraulic cylinder 1, a first connecting block 3 externally connected to the top of the first spring 2, a fixed head 4 above the first connecting block 3, a rotating head 5 externally connected to the lower part of the hydraulic cylinder 1, a base 6 fixedly connected to the bottom end of the rotating head 5, and a rod-shaped assembly that can be easily disassembled and replaced externally connected to the bottom end of the hydraulic cylinder 1.

[0026] Please see Figure 1-4 A separable adjustable electric vehicle double spring rear shock absorber also includes a rod-type assembly, which includes a piston 7, the piston 7 being movably connected to the bottom end of a hydraulic cylinder 1, a second spring 8 being movably connected to the outside of the piston 7, a second connecting block 9 below the piston 7, a first interface 10 being fixedly connected to the top end of the second connecting block 9, a first threaded joint 11 being fixedly connected to the bottom end of the piston 7, a second interface 12 being provided at the top end of the piston 7, and a second threaded joint 13 being provided at the bottom end of the hydraulic cylinder 1.

[0027] The internal shape and size of the second interface 12 are adapted to the external shape and size of the second threaded connector 13. The shape and size of the first interface 10 and the first threaded connector 11 correspond one-to-one. The external shape and size of the piston 7 are adapted to the internal shape and size of the hydraulic cylinder 1. The piston 7 can move up and down inside the hydraulic cylinder 1. The second spring 8 and the first spring 2 are made of the same material. The second spring 8 and the first spring 2 are connected.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, the fixing head 4 on the first connecting block 3 at the top of the hydraulic cylinder 1 is installed at the rear tire of the electric vehicle, and the rotating head 5 and the base 6 are installed together. At the same time, the tension of the first spring 2 outside the hydraulic cylinder 1 is adjusted by rotating the first connecting block 3. Then, the second connecting block 9 is installed on the rotating head 5, and the piston 7 is fixed on the second connecting block 9 by connecting the first threaded joint 11 at the bottom of the piston 7 and the first interface 10 at the top of the second connecting block 9. Then, the second threaded joint 13 at the bottom of the hydraulic cylinder 1 is connected to the second interface 12 at the top of the piston 7, so that the piston 7 is connected and fixed. While the piston 7 moves inside the hydraulic cylinder 1, the second spring 8 outside the piston 7 and the first spring 2 outside the hydraulic cylinder 1 together provide a double shock absorption effect for the electric vehicle. The separate installation of the piston 7 allows the first spring 2 and the second spring 8 to be adjusted separately, avoiding the inconvenience of maintenance caused by the double springs being installed together. The double spring rear shock absorber can be adjusted according to different road conditions and load conditions, with better shock absorption effect and more convenient spring adjustment.

[0029] Example 2: A first positioning rod 14 is welded to the left and right sides of the rotating head 5 respectively. An outer sleeve 15 is fixedly connected inside the first positioning rod 14. A movable rod 16 is movably connected inside the outer sleeve 15. A second positioning rod 17 is welded to the left and right sides of the hydraulic cylinder 1 respectively. The shape and size of the movable rod 16 on the outside are adapted to the shape and size of the inner side of the outer sleeve 15. The movable rod 16 can move up and down inside the outer sleeve 15. There is a distance between the outer sleeve 15 and the first spring 2.

[0030] Specifically, such as Figure 1 and Figure 3 As shown, the first spring 2 outside the hydraulic cylinder 1 and the second spring 8 outside the piston 7 work together to dampen the electric vehicle in motion. At the same time, while the first spring 2 outside the hydraulic cylinder 1 is compressed, the movable rod 16 inside the second positioning rod 17 on the left and right sides of the hydraulic cylinder 1 moves in the outer sleeve 15 inside the first positioning rod 14 on the left and right sides of the piston 7. This allows the first spring 2 to buffer some of the pressure while being locked, preventing damage to the first spring 2 in the rear shock absorber due to excessive pressure. This provides better overall protection for the double-spring rear shock absorber and extends the service life of the device.

[0031] Example 3: The top of the first connecting block 3 is movably connected to a movable head 18, and the inside of the movable head 18 is movably connected to an extension rod 19. The top of the extension rod 19 is provided with a third interface 20, and the bottom of the fixed head 4 is provided with a third threaded connector 21. The external shape and size of the extension rod 19 are adapted to the internal shape and size of the movable head 18, and the shape and size of the third interface 20 and the third threaded connector 21 correspond one-to-one.

[0032] Specifically, such as Figure 1 and Figure 4 As shown, the double-spring rear shock absorber is installed on the side of the rear tire of the electric vehicle via the fixing head 4 and the base 6. When the height of the shock absorber is insufficient during installation, the overall installation height of the shock absorber can be extended by adjusting the movable head 18 at the top of the first connecting block 3 and the extension rod 19 inside the movable head 18. Then, the third threaded connector 21 at the bottom of the fixing head 4 and the third interface 20 at the top of the extension rod 19 are connected, so that the fixing head 4 is installed on the first connecting block 3 via the movable head 18. The height of the double-spring rear shock absorber can be adjusted, which is convenient for installing shock absorbers for different models of electric vehicles for different usage scenarios, and has higher adaptability.

[0033] Working Principle: In use, this utility model first installs the fixing head 4 on the first connecting block 3 at the top of the hydraulic cylinder 1 onto the rear tire of the electric vehicle, and then installs the rotating head 5 and the base 6 together. Simultaneously, the tension of the first spring 2 outside the hydraulic cylinder 1 is adjusted by rotating the first connecting block 3. Next, the second connecting block 9 is installed on the rotating head 5, and the piston 7 is fixed to the second connecting block 9 by connecting the first threaded connector 11 at the bottom of the piston 7 and the first interface 10 at the top of the second connecting block 9. Then, the second threaded connector 13 at the bottom of the hydraulic cylinder 1 is connected to the second interface 12 at the top of the piston 7, thus fixing the piston 7 to the second connecting block 9. While the piston 7 moves inside the hydraulic cylinder 1, the second spring 8 outside the piston 7 and the first spring 2 outside the hydraulic cylinder 1 work together to provide a dual shock absorption effect for the electric vehicle. The separate installation of the piston 7 allows for independent adjustment of the first spring 2 and the second spring 8, avoiding the inconvenience of maintenance caused by the double springs being installed together. The double-spring rear shock absorber can be adjusted according to different road conditions and load conditions, resulting in better shock absorption and more convenient spring adjustment. The second spring 8 outside the piston 7 works together to dampen the electric vehicle while it is in motion. Simultaneously, while the first spring 2 outside the hydraulic cylinder 1 is compressed, the movable rods 16 inside the second positioning rods 17 on both sides of the hydraulic cylinder 1 move within the outer sleeves 15 inside the first positioning rods 14 on both sides of the piston 7. This allows the first spring 2 to buffer some of the pressure while being locked, preventing damage to the first spring 2 in the rear shock absorber due to excessive pressure. This provides better overall protection for the double-spring rear shock absorber and extends the device's service life. The double-spring rear shock absorber is connected to the fixed head 4 and the base. 6. Installed on the side of the rear tire of the electric vehicle, when the height of the shock absorber is insufficient during installation, the overall installation height of the shock absorber can be extended by adjusting the movable head 18 at the top of the first connecting block 3 and the extension rod 19 inside the movable head 18. Then, the third threaded joint 21 at the bottom of the fixed head 4 is connected to the third interface 20 at the top of the extension rod 19, so that the fixed head 4 is installed on the first connecting block 3 through the movable head 18. The height of the double-spring rear shock absorber can be adjusted, which is convenient for installing shock absorbers for different models of electric vehicles for different usage scenarios, and has higher adaptability.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A separably adjustable double-spring rear shock absorber for electric vehicles, comprising a hydraulic cylinder (1), characterized in that: The hydraulic cylinder (1) is externally connected to a first spring (2), the top of the first spring (2) is movably connected to a first connecting block (3), a fixed head (4) is provided above the first connecting block (3), a rotating head (5) is movably connected to the bottom of the hydraulic cylinder (1), a base (6) is fixedly connected to the bottom of the rotating head (5), and a rod-shaped assembly that can be easily disassembled and replaced is movably connected to the bottom of the hydraulic cylinder (1). The rod-shaped assembly includes a piston (7), which is movably connected to the bottom end of a hydraulic cylinder (1). A second spring (8) is movably connected to the outside of the piston (7). A second connecting block (9) is located below the piston (7). A first interface (10) is fixedly connected to the top end of the second connecting block (9). A first threaded connector (11) is fixedly connected to the bottom end of the piston (7). A second interface (12) is provided at the top end of the piston (7). A second threaded connector (13) is provided at the bottom end of the hydraulic cylinder (1).

2. The separately adjustable double-spring rear shock absorber for electric vehicles according to claim 1, characterized in that: The internal shape and size of the second interface (12) are adapted to the external shape and size of the second threaded connector (13), and the shape and size of the first interface (10) and the first threaded connector (11) correspond one-to-one.

3. The separately adjustable double-spring rear shock absorber for electric vehicles according to claim 2, characterized in that: The external shape and size of the piston (7) are adapted to the internal shape and size of the hydraulic cylinder (1), and the piston (7) can move up and down inside the hydraulic cylinder (1).

4. The separately adjustable double-spring rear shock absorber for electric vehicles according to claim 3, characterized in that: The second spring (8) and the first spring (2) are made of the same material, and the second spring (8) and the first spring (2) are connected.

5. The separately adjustable double-spring rear shock absorber for electric vehicles according to claim 1, characterized in that: The rotating head (5) is welded with a first positioning rod (14) on the left and right sides respectively. The first positioning rod (14) is fixedly connected to an outer sleeve (15). The outer sleeve (15) is movably connected to a movable rod (16). The hydraulic cylinder (1) is welded with a second positioning rod (17) on the left and right sides respectively.

6. The separately adjustable double-spring rear shock absorber for electric vehicles according to claim 5, characterized in that: The shape and size of the movable rod (16) on the outside are adapted to the shape and size of the outer sleeve (15) on the inside. The movable rod (16) can move up and down inside the outer sleeve (15). There is a distance between the outer sleeve (15) and the first spring (2).

7. The separately adjustable double-spring rear shock absorber for electric vehicles according to claim 1, characterized in that: The top of the first connecting block (3) is movably connected to a movable head (18), and the inside of the movable head (18) is movably connected to an extension rod (19). The top of the extension rod (19) is provided with a third interface (20), and the bottom of the fixed head (4) is provided with a third threaded connector (21).

8. The separately adjustable double-spring rear shock absorber for electric vehicles according to claim 7, characterized in that: The external shape and size of the extension rod (19) are adapted to the internal shape and size of the movable head (18), and the shape and size of the third interface (20) and the third threaded connector (21) correspond one-to-one.

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