An electromagnetic valve mounting structure for an automobile shock absorber outer tube

Abstract

This utility model discloses a solenoid valve mounting structure for the outer cylinder of an automotive shock absorber, relating to the technical field of shock absorbers. It includes a cylinder and a solenoid valve. The solenoid valve includes a valve seat, an elastic mounting component, a valve core, a coil, and a disassembly component. The disassembly component is used for attaching and detaching the coil from one end of the valve seat. The valve seat is detachably connected to the outer end of the cylinder. The elastic mounting component is snapped onto the other end of the valve seat, providing elastic support for the valve core. The valve core is located in the cavity between the valve seat and the coil. By adding a disc spring to the bottom of the valve seat, the valve plate preload can be automatically adjusted according to the oil pressure, effectively avoiding valve vibration at low pressure and excessive closure at high pressure, thus improving the overall performance of the shock absorber. Furthermore, by separating the valve core and coil via the disassembly component, the valve core can be easily and quickly replaced.

Description

Technical Field

[0001] This utility model relates to the technical field of shock absorbers, and in particular to a solenoid valve mounting structure for the outer cylinder of an automotive shock absorber. 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 a small orifice (often called a valve) 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 with the tire is the recovery stroke, and its upward movement with the tire 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, one factor determining the quality of a shock absorber is the amount of resistance it generates. Suspension with high damping force significantly reduces ride comfort. Conversely, hydraulic shock absorbers have lower damping force, improving suspension comfort but correspondingly reducing handling and posing significant safety hazards on certain road surfaces. To address these issues, new shock absorbers based on air pressure principles have emerged, such as air springs and air shock absorbers. However, these types of air shock absorbers also suffer from problems such as the inability to adjust damping, making it difficult to control their resistance.

[0003] To address the aforementioned issues, existing technologies include connecting an adjustable damping valve in series outside the shock absorber body. An electromagnet controls the movement of the internal valve plate to open or close the oil passage, thus achieving adjustable damping. However, during frequent fast-slow damping transitions, the valve plate vibrates at low pressure and becomes over-closed at high pressure, affecting the lifespan of the valve plate and valve core, as well as the damping effect. Furthermore, because the valve core needs to move to open and close the oil passage, it experiences wear. Current replacement methods require disassembling the outer cylinder from the shock absorber and then disassembling and replacing the valve body, making the replacement process cumbersome. Summary of the Invention

[0004] The purpose of this utility model is to provide a solenoid valve mounting structure for the outer cylinder of an automotive shock absorber, which can effectively avoid the defects of valve vibration at low pressure and excessive closure at high pressure, and facilitate simple and quick replacement of the valve core.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: This utility model provides a solenoid valve mounting structure for the outer cylinder of an automotive shock absorber, including a cylinder body and a solenoid valve. The solenoid valve includes a valve seat, a flexible mounting component, a valve core, a coil, and a disassembly component. The disassembly component is used for attaching and detaching the coil from one end of the valve seat. The valve seat is detachably connected to the outer end of the cylinder; The flexible mounting component is snapped onto the other end of the valve seat to provide flexible support for the valve core. The valve core is located in the cavity between the valve seat and the coil.

[0006] Furthermore, the elastic mounting assembly includes a spring mounting groove formed in the valve seat and a corresponding valve plate mounting groove formed in the coil. A butterfly spring and a valve plate are respectively installed in the spring mounting groove and the valve plate mounting groove. The bottom end of the butterfly spring is inserted into the elastic mounting groove, and the top end of the butterfly spring abuts against the bottom end of the valve plate. Furthermore, the outer diameter of the bottom end of the butterfly spring is larger than the outer diameter of the top end, and an inwardly convex ring is provided in the middle. The lower outer wall of the valve core is provided with a concave surface that cooperates with the convex ring.

[0007] Furthermore, the disassembly assembly includes a slot and a sealing groove formed on the top of the valve core, a claw at the bottom of the coil that engages with the slot, and a sealing ring inside the sealing groove.

[0008] Furthermore, the coil is equipped with an electromagnet corresponding to the valve core, and the top of the valve core is integrated with a conductive copper ring corresponding to the electromagnet.

[0009] Furthermore, an oil passage hole is provided at the center of the bottom of the valve core, and at least three pressure balance holes are evenly distributed around the valve core.

[0010] Furthermore, the valve plate includes an outer ring, an inclined ring, and an inner ring. The inclined ring is located between the outer ring and the inner ring, causing the inner ring to bulge upwards. The outer ring is located in the valve plate mounting groove, which is opened inside the claw. The upper end of the butterfly spring abuts against the bottom end of the outer ring.

[0011] Furthermore, the outer wall of the cylinder is connected to a connecting cylinder, the connecting cylinder is provided with an internal thread, the bottom of the valve seat is provided with an external thread, and the valve seat is threadedly connected to the connecting cylinder.

[0012] In summary, this utility model has the following beneficial effects: In the solenoid valve mounting structure of the outer cylinder of the automotive shock absorber of this utility model, by adding a disc spring at the bottom of the valve seat, the valve plate preload can be automatically adjusted according to the oil pressure, which effectively avoids the defects of valve vibration when the plate is under low pressure and excessive closure when the plate is under high pressure, thus improving the overall performance of the shock absorber. In addition, by separating the valve core and the coil through a disassembly assembly, the valve core can be easily and quickly replaced. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is an exploded structural diagram of the present invention.

[0015] Figure 3 This is a cross-sectional view of the present invention.

[0016] Figure 4 This is a partially enlarged view of the connection between the valve core and the disc spring of this utility model.

[0017] Figure 5 This is a partially enlarged view of the connection between the butterfly spring and the valve plate of this utility model.

[0018] In the picture: 1. Cylinder; 2. Solenoid valve; 11. Connecting cylinder; 21. Valve seat; 22. Flexible mounting assembly; 23. Valve core; 24. Coil; 25. Disassembly assembly; 26. Electromagnet; 221. Butterfly spring; 222. Valve plate; 231. Slot; 232. Sealing groove; 233. Oil passage hole; 234. Pressure balance hole; 235. Concave surface; 236. Wire copper ring; 241. Claw; 2211. Convex ring; 2221. Outer ring; 2222. Inclined ring; 2223. Inner ring. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] This embodiment discloses an installation structure for the solenoid valve 2 on the outer cylinder of an automotive shock absorber, referring to... Figure 1 , Figure 2 The system includes a cylinder 1 and a solenoid valve 2. The solenoid valve 2 includes a valve seat 21, a flexible mounting assembly 22, a valve core 23, a coil 24, and a disassembly assembly 25. The disassembly assembly 25 is used to attach and detach the coil 24 from one end of the valve seat 21. The valve seat 21 is detachably connected to the outer end of the cylinder 1. The flexible mounting assembly 22 is snapped onto the other end of the valve seat 21 and is used to elastically support the valve core 23. The valve core 23 is located in the cavity between the valve seat 21 and the coil 24. One end of the valve seat 21 extends into and connects to the inside of the cylinder 1. In this embodiment, the two ends of the outer wall of the cylinder 1 are connected to form a double solenoid valve 2.

[0021] Reference Figure 3 The elastic mounting assembly 22 includes a spring mounting groove in the valve seat 21 and a corresponding valve plate mounting groove in the coil 24. A butterfly spring 221 and a valve plate 222 are respectively installed in the spring mounting groove and the valve plate mounting groove. The bottom end of the butterfly spring 221 is inserted into the elastic mounting groove, and the top end of the butterfly spring 221 abuts against the bottom end of the valve plate 222. When the valve core 23 moves toward the valve seat 21, the valve core 23 is linked with the butterfly spring. The butterfly spring makes the valve core 23 automatically center and not shake, forming a pressure regulating module, thereby effectively avoiding valve vibration at low pressure and excessive closure at high pressure.

[0022] Specifically, when the oil pressure acts on the bottom of the valve plate 222, it pushes the valve core 23 to move upward (opening the oil hole); when the oil pressure is released, the spring preload of the butterfly spring 221 presses the valve core 23 downward (closing the oil hole); in addition, when the coil 24 is energized, it generates additional downward pressure to enhance the seal between the valve core 23 and the valve seat 21.

[0023] Reference Figures 2-4 The outer diameter of the bottom end of the butterfly spring 221 is larger than the outer diameter of the top end, and an inwardly convex ring 2211 is provided in the middle. The lower outer wall of the valve core 23 has a concave surface 235 that cooperates with the convex ring 2211. The concave surface 235 is in line contact with the convex ring 2211, which can reduce the friction between the valve core 23 and the butterfly spring 221.

[0024] Reference Figure 3 , Figure 4 The disassembly assembly 25 includes a slot 231 and a sealing groove 232 on the top of the valve core 23. The bottom end of the coil 24 is provided with a claw 241 that engages with the slot 231. A sealing ring is provided in the sealing groove 232. An electromagnet 26 corresponding to the valve core 23 is provided in the coil 24. A conductive copper ring 236 corresponding to the electromagnet 26 is integrated at the top of the valve core 23. The claw 241 of the coil 24 contracts or expands radially and engages perpendicularly with the circumferential groove of the valve core 23. After the claw 241 protrudes and is embedded in the groove, it resists axial pull-out by frictional force in the tangential direction. In addition, there are contacts on both sides of the claw 241, forming a double contact redundant structure. In this way, the top snap-fit ​​contact surface maintains conductive continuity when the valve core 23 moves.

[0025] Reference Figure 4 , Figure 5 The valve plate 222 includes an outer ring 2221, an inclined ring 2222, and an inner ring 2223. The inclined ring 2222 is disposed between the outer ring 2221 and the inner ring 2223, making the inner ring 2223 protrude upward. The outer ring 2221 is disposed in the valve plate mounting groove, which is opened inside the claw 241. The upper end of the butterfly spring 221 abuts against the bottom end of the outer ring 2221. Setting the valve plate 222 into a bent structure can facilitate connection with the butterfly spring 221 and further improve the stability of the valve core 23 movement.

[0026] Reference Figure 3 The valve core 23 has an oil passage hole 233 at the bottom center, and at least three pressure balance holes 234 are evenly distributed around the valve core 23. The oil volume in the oil passage hole 233 is controlled by adjusting the opening of the valve core 23 up and down, thereby directly controlling the damping force. The pressure balance holes 234 keep the oil pressure at the upper and lower ends of the valve core 23 balanced in real time, preventing the valve core 23 from shifting and wearing due to pressure on one side.

[0027] Reference Figure 1 , Figure 2 The outer wall of the cylinder 1 is connected to a connecting cylinder 11. The connecting cylinder 11 is provided with an internal thread, and the bottom of the valve seat 21 is provided with an external thread. The valve seat 21 is threadedly connected to the connecting cylinder 11. The solenoid valve 2 and the cylinder 1 can be installed and removed through the threaded connection.

[0028] 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 solenoid valve mounting structure for the outer cylinder of an automotive shock absorber, characterized in that, It includes a cylinder (1) and a solenoid valve (2). The solenoid valve (2) includes a valve seat (21), a flexible mounting assembly (22), a valve core (23), a coil (24), and a disassembly assembly (25). The disassembly assembly (25) is used to attach and detach one end of the coil (24) from the valve core (23). The valve seat (21) is detachably connected to the outer end of the cylinder (1); The elastic mounting assembly (22) is snapped onto the other end of the valve seat (21) to elastically support the valve core (23). The valve core (23) is located in the cavity between the valve seat (21) and the coil (24).

2. A solenoid valve mounting structure for an automobile shock absorber outer tube according to claim 1, characterized in that The elastic mounting assembly (22) includes a spring mounting groove in the valve seat (21) and a valve plate mounting groove in the coil (24). A butterfly spring (221) and a valve plate (222) are respectively installed in the spring mounting groove and the valve plate mounting groove. The bottom end of the butterfly spring (221) is inserted into the spring mounting groove, and the top end of the butterfly spring (221) abuts against the bottom end of the valve plate (222).

3. A solenoid valve mounting structure for an automobile shock absorber outer tube according to claim 2, characterized in that The bottom outer diameter of the butterfly spring (221) is larger than the top outer diameter, and an inwardly protruding ring (2211) is provided in the middle. The lower outer wall of the valve core (23) is provided with a concave surface (235) that cooperates with the protruding ring (2211).

4. The electromagnetic valve mounting structure for an outer tube of an automobile shock absorber according to claim 2, characterized in that The disassembly assembly (25) includes a slot (231) and a sealing groove (232) on the top of the valve core (23). The bottom end of the coil (24) is provided with a claw (241) that engages with the slot (231). A sealing ring is provided in the sealing groove (232).

5. The solenoid mounting structure for an automobile shock absorber outer tube according to claim 4, characterized in that: The coil (24) is provided with an electromagnet (26) corresponding to the valve core (23), and the top of the valve core (23) is integrated with a conductive copper ring (236) corresponding to the electromagnet (26).

6. The solenoid valve mounting structure for the outer cylinder of an automotive shock absorber as described in claim 5, characterized in that: The valve core (23) has an oil passage hole (233) at the bottom center, and at least three pressure balance holes (234) are evenly distributed around the valve core (23).

7. The electromagnetic valve mounting structure for an outer tube of an automobile shock absorber according to claim 4, characterized in that: The valve plate (222) includes an outer ring (2221), an inclined ring (2222), and an inner ring (2223). The inclined ring (2222) is located between the outer ring (2221) and the inner ring (2223), making the inner ring (2223) protrude upward. The outer ring (2221) is located in the valve plate mounting groove, which is opened inside the claw (241). The upper end of the butterfly spring (221) abuts against the bottom end of the outer ring (2221).

8. The solenoid valve mounting structure for the outer cylinder of an automotive shock absorber as described in claim 1, characterized in that: The outer wall of the cylinder (1) is connected to a connecting cylinder (11), the connecting cylinder (11) is provided with an internal thread, the bottom of the valve seat (21) is provided with an external thread, and the valve seat (21) is threadedly connected to the connecting cylinder (11).

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