A shock absorber cylinder

Abstract

This utility model discloses a shock absorber cylinder body, relating to the technical field of shock absorbers. It includes a cylinder body and a hinged seat located at the bottom of the cylinder body and rotatably connected to an automotive component. The cylinder body comprises an outer cylinder and an inner cylinder, with a cooling oil mounting cavity formed between the inner and outer cylinders. One end of the cooling oil mounting cavity has an oil inlet, and a hollow oil cooling channel is formed between the cooling oil mounting cavity and the oil inlet. Radial heat dissipation fins are provided on the outer cylinder corresponding to the piston rod's movement area. The hollow oil cooling channel and the heat dissipation fins form an internal and external heat dissipation structure. By setting the cylinder body with a double-layer cylinder structure, forming a cooling oil mounting cavity between the two layers, and providing radial heat dissipation fins on the outer cylinder, the heat dissipation of the cylinder body can be effectively improved, thereby ensuring a continuous and stable shock absorption effect.

Description

Technical Field

[0001] This utility model relates to the technical field of shock absorbers, and in particular to a shock absorber cylinder. Background Technology

[0002] Shock absorbers typically consist of a sealed cylinder containing hydraulic fluid and a piston. The piston moves via the hydraulic fluid, which must flow through small orifices (often called valves) on the piston. When a vehicle's tires travel over an uneven surface, the suspension system is forced to move up and down, driving the piston within the shock absorber cylinder. The shock absorber's downward movement following the tire's trajectory is the recovery stroke, and its upward movement following the tire's bounce is the compression stroke. As the piston moves, the hydraulic fluid is restricted by the valve, forcing it to flow slowly, thus creating a damping effect. However, most current shock absorbers use a twin-tube design, which suffers from drawbacks such as limited damping oil storage and poor heat dissipation, thus affecting the damping performance. Summary of the Invention

[0003] The purpose of this invention is to provide a shock absorber cylinder that can effectively improve heat dissipation, thereby ensuring a continuous and stable shock absorption effect.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: This utility model provides a shock absorber cylinder body, including a cylinder body and a hinge seat located at the bottom of the cylinder body and rotatably connected to an automotive component. The cylinder body includes an outer cylinder and an inner cylinder, and a cooling oil mounting cavity is formed between the inner cylinder and the outer cylinder. An oil inlet is provided at one end of the cooling oil mounting cavity, and a hollow oil cooling channel is formed between the cooling oil mounting cavity and the oil inlet. Radial heat dissipation fins are provided on the outer cylinder corresponding to the piston rod's movement area. The hollow oil cooling channel and the heat dissipation fins form an inner and outer heat dissipation structure.

[0005] Furthermore, the heat dissipation fins are spirally arranged on the outer wall of the outer cylinder, and the height of the heat dissipation fins is 3-10mm.

[0006] Furthermore, the inner cylinder is made of stainless steel, and the outer cylinder is made of carbon steel.

[0007] Furthermore, the outer cylinder surface is coated with a graphene thermally conductive coating.

[0008] Furthermore, the outer cylinder sidewall is integrated with a bypass valve that can adjust the oil flow rate.

[0009] Furthermore, high-hardness steel rings are embedded at both ends of the inner cylinder.

[0010] Furthermore, the outer cylinder is provided with a plurality of connecting rings for mounting springs, and the springs are mounted between the connecting rings and the hinge seat.

[0011] In summary, this utility model has the following beneficial effects: In the shock absorber cylinder of this utility model, by setting the cylinder body with a double-layer cylinder structure, a cooling oil installation cavity is formed between the two layers, and radial heat dissipation fins are set on the outer cylinder, which can effectively improve the heat dissipation of the cylinder body, thereby ensuring a continuous and stable shock absorption effect. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0013] Figure 2 This is a cross-sectional view of the present invention.

[0014] Figure 3 This is an enlarged view of the present invention.

[0015] Figure 4 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0016] In the picture: 1. Cylinder body; 2. Hinge seat; 3. Heat dissipation fins; 4. Bypass valve; 5. High-hardness steel ring; 6. Connecting ring; 11. Outer cylinder; 12. Inner cylinder; 13. Cooling oil mounting cavity. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Example 1: This example discloses a shock absorber cylinder, referring to... Figures 1-3 The cylinder includes a cylinder body 1 and a hinge seat 2 located at the bottom of the cylinder body 1 and rotatably connected to the automotive components. The cylinder body 1 includes an outer cylinder 11 and an inner cylinder 12. A cooling oil mounting cavity 13 is formed between the inner cylinder 12 and the outer cylinder 11. An oil inlet 14 is provided at one end of the cooling oil mounting cavity 13. A hollow oil cooling channel is formed between the cooling oil mounting cavity 13 and the oil inlet 14. Radial heat dissipation fins 3 are provided on the outer cylinder 11 corresponding to the piston rod's movement area. The hollow oil cooling channel and the heat dissipation fins 3 form an internal and external heat dissipation structure. By setting the cylinder body with a double-layer cylinder structure, forming a cooling oil mounting cavity 13 between the double-layer cylinders, and setting radial heat dissipation fins 3 on the outer cylinder 11, internal and external heat dissipation can be achieved, which can effectively improve the cooling of the cylinder body and thus ensure a continuous and stable shock absorption effect.

[0019] The double-layer cylinder structure consists of an outer cylinder 11 and an inner cylinder 12, which can reduce thermal stress during start-up, shutdown, and changes in operating conditions, ensure that the cylinder can expand freely, and avoid unnecessary stress and unit vibration caused by poor expansion. The double-layer cylinder structure can guarantee sufficient strength and rigidity, while the flow passage has good flow performance.

[0020] Reference Figure 1 , Figure 2The heat dissipation fins 3 are spirally arranged on the outer wall of the outer cylinder 11. The height of the heat dissipation fins 3 is 3-10mm. By setting the heat dissipation fins 3 on the outer wall of the outer cylinder 11 and setting the heat dissipation fins 3 in a spiral shape, the heat dissipation area can be increased, and the oil temperature can be reduced by 15-20℃.

[0021] The inner cylinder 12 is made of stainless steel, and the outer cylinder 11 is made of carbon steel, which can provide wear resistance for the inner cylinder 12 and corrosion resistance for the outer cylinder 11.

[0022] The outer cylinder 11 is coated with a graphene thermal conductive coating, which further improves the heat dissipation effect of the outer cylinder 11.

[0023] Example 2, refer to Figure 4 The outer cylinder 11 has an integrated bypass valve 4 with adjustable oil flow rate on its side wall, which enables rapid switching of damping hardness, thereby ensuring a continuous and stable shock absorption effect.

[0024] Reference Figure 3 Both ends of the inner cylinder 12 are embedded with high-hardness steel rings 5, which can prevent deformation caused by bolt preload and piston movement.

[0025] Reference Figure 2 , Figure 3 The outer cylinder 11 has multiple connecting rings 6 for mounting springs on its periphery. The springs are mounted between the connecting rings 6 and the hinge seat 2. The multiple connecting rings are used to accurately fix the springs.

[0026] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A shock absorber cylinder body, comprising a cylinder body (1) and a hinge seat (2) disposed at the bottom of the cylinder body (1) and rotatably connected to an automotive component, characterized in that, The cylinder (1) includes an outer cylinder (11) and an inner cylinder (12). A cooling oil mounting cavity (13) is formed between the inner cylinder (11) and the outer cylinder (12). An oil supply hole (14) is provided at one end of the cooling oil mounting cavity (13). A hollow oil cooling channel is formed between the cooling oil mounting cavity (13) and the oil supply hole (14). Radial heat dissipation fins (3) are provided on the outer cylinder (11) corresponding to the movement area of ​​the piston rod. The hollow oil cooling channel and the heat dissipation fins (3) form an internal and external heat dissipation structure.

2. A shock absorber cylinder body as described in claim 1, characterized in that... The heat dissipation fins (3) are spirally arranged on the outer wall of the outer cylinder (11), and the height of the heat dissipation fins (3) is 3-10mm.

3. A shock absorber cylinder body as described in claim 1, characterized in that... The inner cylinder (12) is made of stainless steel, and the outer cylinder (11) is made of carbon steel.

4. A shock absorber cylinder body as described in claim 1, characterized in that, The outer cylinder (11) is coated with a graphene thermally conductive coating.

5. A shock absorber cylinder body as described in claim 1, characterized in that... The outer cylinder (11) has an integrated bypass valve (4) on its side wall that can adjust the oil flow rate.

6. A shock absorber cylinder body as described in claim 1, characterized in that, High-hardness steel rings (5) are embedded at both ends of the inner cylinder (12).

7. A shock absorber cylinder body as described in claim 1, characterized in that, The outer cylinder (11) has a plurality of connecting rings (6) for installing springs on its periphery, and the springs are installed between the connecting rings (6) and the hinge seat (2).

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