Single-cylinder hydraulic shock absorber suitable for electric motorcycle

Abstract

The utility model provides a single-cylinder hydraulic shock absorber suitable for an electric motorcycle, and relates to the technical field of shock absorbers, the single-cylinder hydraulic shock absorber comprises a shock absorption cylinder body, a valve rod is slidably installed in the middle of the shock absorption cylinder body in a penetrating mode, a piston is installed at the lower end of the valve rod, the piston is slidably installed in the shock absorption cylinder body, and a chassis is fixedly installed on the surface of the lower end of the shock absorption cylinder body. A lower connector is fixedly installed on the lower surface of the base plate, an adjustable limiting assembly is arranged in the middle of the valve rod, an upper cover is installed at the upper end of the valve rod, and an upper connector is installed on the upper surface of the upper cover. And at the moment, the spacer sleeve can slide to adjust the position of the spacer sleeve in the middle of the valve rod, so that the spacer sleeve can block the damping cylinder in the middle of the valve rod to control the moving distance of the valve rod, the cushioning strength and softness are adjusted, adjustment can be conducted according to the use environment, and the convenience of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, and more specifically, to a single-cylinder hydraulic shock absorber adapted to electric motorcycles. Background Technology

[0002] Shock absorbers are used to suppress the oscillations caused by the rebound of a spring after absorbing shock and the impact from the road surface. They are widely used in vehicles to accelerate the attenuation of vibrations between the frame and the body, thereby improving the ride comfort of the car. For example, patent application number CN201310378943.3 aims to provide a hydraulic shock absorber that can obtain sufficient hydraulic locking characteristics when the hydraulic shock absorber is extended, while reducing the number of channel holes formed in the seat tube, and thus reducing machining time. By eliminating the need for a rebound spring, the hydraulic shock absorber also has a simplified construction. When the hydraulic shock absorber is extended, the upper channel hole (5) formed in the upper part of the seat tube (3) is first closed by the lower hydraulic locking component (7) connected to the inner circumferential surface of the lower part of the inner tube (1). Then, when the hydraulic shock absorber extends further, with the upper channel hole (5) closed, the circulation hole (6) formed in the lower part of the inner tube (1) is closed by the upper oil pressure locking component (8) connected to the lower side of the inner circumferential surface of the outer tube (4). In the above technical solution, the distance of valve stem movement cannot be adjusted according to the usage environment, which affects the shock absorption efficiency of the device. Utility Model Content

[0003] The main purpose of this invention is to provide a single-cylinder hydraulic shock absorber suitable for electric motorcycles, which can effectively solve the problem in the prior art that the distance of valve stem movement cannot be adjusted according to the usage environment, thus affecting the shock absorption efficiency of the device.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a single-cylinder hydraulic shock absorber adapted to an electric motorcycle, comprising a shock absorber cylinder, a valve stem slidably mounted through the middle of the shock absorber cylinder, a piston mounted at the lower end of the valve stem, the piston being slidably mounted inside the shock absorber cylinder, a chassis fixedly mounted on the lower surface of the shock absorber cylinder, a lower connector fixedly mounted on the lower surface of the chassis, an adjustable limiting component provided in the middle of the valve stem, an upper cover mounted on the upper end of the valve stem, and an upper connector mounted on the upper surface of the upper cover.

[0005] Preferably, a first spring is fixedly installed on the lower surface of the upper cover, and the top end of the first spring is disposed on the upper surface of the chassis.

[0006] Preferably, a protective cover is provided on the circumference of the upper cover.

[0007] Preferably, a rubber sleeve is installed in the middle of the valve stem, and a valve seat is installed on the lower surface of the rubber sleeve.

[0008] Preferably, a second spring is fixedly installed on the lower surface of the valve seat, and the top end of the second spring is disposed on the upper surface of the piston.

[0009] Preferably, the adjustable limiting component includes a retaining sleeve and several bolt holes. The retaining sleeve is slidably installed in the middle of the valve stem, and the several bolt holes are equidistantly opened on the circumference of the valve stem.

[0010] Preferably, the sleeve has a mounting groove on its circumference, a threaded sleeve is installed in the mounting groove, a screw is fitted in the middle of the threaded sleeve, and the top of the screw is located inside the bolt hole.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) By setting the lower connector and the upper connector, the device can be easily installed. After the device is installed, when it is vibrated, the upper connector will be pressured and move downward, which will cause the valve stem to move downward and drive the piston to move downward. When it moves to a certain extent, the piston will be subjected to the hydraulic pressure inside the shock absorber and rebound upward to perform shock absorption. Furthermore, by fixing the first spring on the lower surface of the upper cover and setting the top of the first spring on the upper surface of the chassis, the rebound force of the device can be better and the shock absorption force can be better. When it is necessary to adjust the depth of valve stem movement, the operator can rotate the screw to move the screw and the screw sleeve backward, so that the top of the screw can be disengaged from the bolt hole. At this time, the sleeve can be slid to adjust the position of the sleeve in the middle of the valve stem, so that the sleeve can block the shock absorber in the middle of the valve stem to control the distance of valve stem movement, thereby adjusting the damping strength. It can be adjusted according to the usage environment, which improves the convenience of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a single-cylinder hydraulic shock absorber adapted to an electric motorcycle according to the present invention;

[0014] Figure 2 This is a schematic side view of the overall structure of a single-cylinder hydraulic shock absorber adapted to an electric motorcycle according to the present invention.

[0015] Figure 3 This is a schematic diagram of the valve stem structure of a single-cylinder hydraulic shock absorber adapted to electric motorcycles according to this utility model;

[0016] Figure 4 This is a schematic diagram of the retaining sleeve structure of a single-cylinder hydraulic shock absorber adapted to electric motorcycles according to this utility model.

[0017] In the diagram: 1. Shock absorber cylinder; 2. Chassis; 3. Lower connector; 4. First spring; 5. Valve stem; 6. Adjustable limit assembly; 601. Sleeve; 602. Bolt hole; 603. Mounting groove; 604. Screw sleeve; 605. Screw; 7. Top cover; 8. Top connector; 9. Protective cover; 10. Rubber sleeve; 11. Valve seat; 12. Second spring; 13. Piston. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1 , 2 As shown in Figure 3, a single-cylinder hydraulic shock absorber adapted to an electric motorcycle includes a shock absorber body 1. A valve stem 5 is slidably installed through the middle of the shock absorber body 1. A piston 13 is installed at the lower end of the valve stem 5 and is slidably installed inside the shock absorber body 1. A chassis 2 is fixedly installed on the lower surface of the shock absorber body 1. A lower connector 3 is fixedly installed on the lower surface of the chassis 2. An adjustable limiting component 6 is provided in the middle of the valve stem 5. An upper cover 7 is installed at the upper end of the valve stem 5. An upper connector 8 is installed on the upper surface of the upper cover 7.

[0020] like Figure 1 As shown, a first spring 4 is fixedly installed on the lower surface of the upper cover 7. The top end of the first spring 4 is located on the upper surface of the chassis 2. By fixing the first spring 4 on the lower surface of the upper cover 7 and setting the top end of the first spring 4 on the upper surface of the chassis 2, the rebound force and shock absorption force of this device can be improved.

[0021] like Figure 1 As shown, a protective cover 9 is provided around the upper cover 7 to protect the valve stem 5.

[0022] like Figure 2 , 3 As shown, a rubber sleeve 10 is installed in the middle of the valve stem 5, and a valve seat 11 is installed on the lower surface of the rubber sleeve 10. A second spring 12 is fixedly installed on the lower surface of the valve seat 11, and the top end of the second spring 12 is set on the upper surface of the piston 13. By installing a rubber sleeve 10 in the middle of the valve stem 5, installing a valve seat 11 on the lower surface of the rubber sleeve 10, and fixing a second spring 12 on the lower surface of the valve seat 11, the shock absorption capacity can be improved.

[0023] like Figure 2, 3 As shown in Figure 4, the adjustable limiting component 6 includes a retaining sleeve 601 and several bolt holes 602. The retaining sleeve 601 is slidably installed in the middle of the valve stem 5. The several bolt holes 602 are equidistantly opened on the circumference of the valve stem 5. An installation groove 603 is opened on the circumference of the retaining sleeve 601. A threaded sleeve 604 is installed on the installation groove 603. A screw 605 is sleeved in the middle of the threaded sleeve 604. The top end of the screw 605 is located inside the bolt hole 602. By setting the lower connector 3 and the upper connector 8, this device can be easily installed. After this device is installed, when it is subjected to vibration, the upper connector 8 will be pressured and move downward, causing the valve stem 5 to move downward, and simultaneously driving the piston 13 to move downward. When it moves to a certain extent, the piston 13 is subjected to the shock-absorbing cylinder 1. The internal hydraulic pressure rebounds upwards to dampen vibrations. A first spring 4 is fixedly installed on the lower surface of the upper cover 7, with its tip positioned on the upper surface of the chassis 2. This enhances the rebound force and damping effect of the device. When adjusting the depth of the valve stem 5's movement, the operator rotates the screw 605, causing it to move backward in conjunction with the screw sleeve 604. This disengages the tip of the screw 605 from the bolt hole 602, allowing the retaining sleeve 601 to slide and adjust its position in the middle of the valve stem 5. The retaining sleeve 601 then blocks the damping cylinder 1 in the middle of the valve stem 5, controlling the distance the valve stem 5 moves and thus adjusting the damping strength. This adaptability to different operating environments improves the device's convenience.

[0024] The working principle of this single-cylinder hydraulic shock absorber adapted for electric motorcycles:

[0025] In use, the lower connector 3 and upper connector 8 facilitate the installation of this device. After installation, when subjected to vibration, the upper connector 8 will move downward under pressure, causing the valve stem 5 to move downward and simultaneously driving the piston 13 downward. When it reaches a certain depth, the piston 13 is subjected to hydraulic pressure inside the shock-absorbing cylinder 1 and rebounds upward to perform shock absorption. Furthermore, the first spring 4, fixedly installed on the lower surface of the upper cover 7 with its top end positioned on the upper surface of the chassis 2, enhances the rebound force and shock absorption of this device. When adjusting the depth of the valve stem 5's movement, the operator can rotate the screw 605 to adjust the depth. When screw 605 moves backward in conjunction with screw sleeve 604, the top of screw 605 disengages from the bolt hole 602. At this point, the retaining sleeve 601 can slide to adjust its position in the middle of valve stem 5. This allows the retaining sleeve 601 to block the shock-absorbing cylinder 1 in the middle of valve stem 5, thereby controlling the movement distance of valve stem 5 and adjusting the damping strength. This allows for adjustment according to the usage environment, improving the convenience of the device. A rubber sleeve 10 is installed in the middle of valve stem 5, and a valve seat 11 is installed on the lower surface of the rubber sleeve 10. A second spring 12 is fixedly installed on the lower surface of the valve seat 11, with the top of the second spring 12 located on the upper surface of piston 13, which improves the damping capability.

[0026] The above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A single-cylinder hydraulic shock absorber adapted to electric motorcycles, comprising a shock absorber cylinder (1), characterized in that: A valve stem (5) is slidably installed through the middle of the shock absorber cylinder (1). A piston (13) is installed at the lower end of the valve stem (5). The piston (13) is slidably installed inside the shock absorber cylinder (1). A chassis (2) is fixedly installed on the lower surface of the shock absorber cylinder (1). A lower connector (3) is fixedly installed on the lower surface of the chassis (2). An adjustable limiting component (6) is provided in the middle of the valve stem (5). A top cover (7) is installed at the upper end of the valve stem (5). An upper connector (8) is installed on the upper surface of the top cover (7).

2. A single-cylinder hydraulic shock absorber adapted to an electric motorcycle according to claim 1, characterized in that: A first spring (4) is fixedly installed on the lower surface of the upper cover (7), and the top end of the first spring (4) is set on the upper surface of the chassis (2).

3. A single-cylinder hydraulic shock absorber adapted to an electric motorcycle according to claim 1, characterized in that: The upper cover (7) is provided with a protective cover (9) on its periphery.

4. A single-cylinder hydraulic shock absorber adapted to an electric motorcycle according to claim 1, characterized in that: A rubber sleeve (10) is installed in the middle of the valve stem (5), and a valve seat (11) is installed on the lower surface of the rubber sleeve (10).

5. A single-cylinder hydraulic shock absorber adapted to an electric motorcycle according to claim 4, characterized in that: A second spring (12) is fixedly installed on the lower surface of the valve seat (11), and the top end of the second spring (12) is disposed on the upper surface of the piston (13).

6. A single-cylinder hydraulic shock absorber adapted to an electric motorcycle according to claim 1, characterized in that: The adjustable limiting component (6) includes a retainer (601) and a plurality of bolt holes (602). The retainer (601) is slidably installed in the middle of the valve stem (5), and the plurality of bolt holes (602) are equidistantly opened on the circumference of the valve stem (5).

7. A single-cylinder hydraulic shock absorber adapted to an electric motorcycle according to claim 6, characterized in that: The retaining sleeve (601) has an installation groove (603) on its circumference. A threaded sleeve (604) is installed on the installation groove (603). A screw (605) is fitted in the middle of the threaded sleeve (604). The top end of the screw (605) is located inside the bolt hole (602).

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