A floating seal type solenoid valve shock absorber

Abstract

The present invention discloses a floating sealed solenoid valve shock absorber, which belongs to the technical field of automobile shock absorbers. The floating sealed solenoid valve shock absorber comprises an oil storage cylinder outer shell, a piston rod is provided in the middle of the oil storage cylinder outer shell, a wiring harness is fixedly installed in the middle of the piston rod, a restoring valve is fixedly installed at one end of the wiring harness, and the restoring valve and one end of the oil storage cylinder outer shell form an upper cavity. By providing a structure with a floating sealing chamber, a piston and a valve plate sealing chamber, a traditional valve plate sealing chamber is replaced to form a floating sealing structure, thereby improving the overall service life and durability. By providing a structure with an electromagnet core, the electromagnet core can control the movement of the core rod, and the floating structure composed of the floating sealing chamber, the piston and the valve plate sealing chamber can be effectively adjusted to the lowest damping force, thereby increasing the range of the damping force value, and having a wider adjustability, thereby ensuring the comfort of automobile driving.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile shock absorbers, and more particularly to a floating sealing type electromagnetic valve shock absorber. Background Art

[0002] Shock absorbers play a vital role in vehicle driving, effectively cushioning road bumps and ensuring vehicle stability and ride comfort. The performance of shock absorbers depends largely on the sealing valve structure within them.

[0003] Currently, common shock absorbers on the market utilize a double-sided sealed valve disc structure. This type of sealing disc is typically secured with adhesive. However, over time, the adhesive is susceptible to various factors, including vehicle vibration, temperature fluctuations, and oil erosion, leading to degradation and loss of seal performance, which in turn affects the proper functioning of the shock absorber. Furthermore, the existing sealing valve disc frame is relatively thin, making it susceptible to deformation and even damage when subjected to internal shock absorber pressure, significantly shortening the shock absorber's service life. Compared to floating structures, this double-sided sealed valve disc structure offers significantly lower durability and cannot meet the requirements for long-term stable vehicle operation. Furthermore, existing structures exhibit significant drawbacks in terms of compression damping force. Under low-current operating conditions, the compression damping force is excessively high. This results in the shock absorber being too stiff at low speeds or when traversing slightly bumpy roads, failing to effectively filter out minor vibrations. This makes the bumps noticeable to passengers and severely impacts ride comfort. Furthermore, existing structures have a narrow damping force bandwidth, limiting the range of damping force that the shock absorber can effectively adjust. This means that under different driving conditions and vehicle load conditions, it is difficult for the shock absorber to flexibly adjust the damping force to achieve the best vibration reduction effect. More importantly, the existing structure cannot accurately adjust the damping force through the valve system, which limits the optimization and improvement of the shock absorber performance. For example, when facing different road conditions, such as flat roads, rugged mountain roads or urban speed bumps, the driver cannot make targeted adjustments to the damping force of the shock absorber according to actual needs. The vehicle can only operate in a fixed damping force mode and cannot achieve the best vibration reduction performance matching. The existing double-sided sealing valve plate structure has many problems in terms of service life, compression damping force characteristics and damping force adjustment, which seriously restricts the improvement of shock absorber performance and the improvement of vehicle driving quality. Therefore, it is of great practical significance to develop a shock absorber sealing valve plate structure that can overcome the above-mentioned defects, has high durability, reasonable damping force characteristics and can flexibly adjust the damping force. Summary of the Invention

[0004] The object of the present invention is to provide a floating seal type solenoid valve damper to solve the problems raised in the above background technology.

[0005] and a valve body, and a valve body is connected with the valve body to the oil reservoir housing, and a valve body is connected with the valve body to the oil reservoir housing.

[0006] Side holes are provided on the upper and lower sides of the piston, and the side holes are inclined columnar pile-shaped structures. A compression valve assembly is fixedly installed on one end of the inner cavity of the oil storage cylinder outer shell away from the piston rod.

[0007] Furthermore, an oil seal is fixedly installed at the contact position between the piston rod and the outer shell of the oil storage cylinder, a guide seat is fixedly installed on the side of the piston rod located at the oil seal, and an end cover is fixedly installed on the side of the outer shell of the oil storage cylinder.

[0008] By adopting the above technical solution, the oil seal can seal the oil inside the outer shell of the oil storage cylinder, and the guide seat can maintain the stability of the connection position.

[0009] Furthermore, a working cylinder is fixedly mounted on the inner cavity side wall of the oil storage cylinder outer shell, and an outer cavity is formed between the oil storage cylinder outer shell and the working cylinder.

[0010] By adopting the above technical solution, when one of the lower cavity or the upper cavity becomes a high-pressure area and the other becomes a low-pressure area, part of the oil will flow from the high-pressure area into the low-pressure area through the outer cavity, thereby performing partial pressure release regulation.

[0011] Furthermore, the sealing cover assembly includes a metal frame that is mounted on the outside of the adjusting gasket, an outer sealing ring is provided in the middle of the outer side of the metal frame, a circular ring is provided in the middle of the inner cavity of the metal frame, and a wave spring is provided on the side of the metal frame.

[0012] By adopting the above technical solution, the circular ring and the valve seat cooperate to seal, and the outer wall of the adjustment gasket is smooth and cooperates with the inner wall of the valve seat, so that it can slide up and down.

[0013] Furthermore, an annular side groove is provided on the side of the circulation screw.

[0014] By adopting the above technical solution, the side grooves divert the oil.

[0015] Furthermore, the floating sealing chamber includes a valve seat arranged between the recovery valve and the piston, a ring band is opened on the side of the valve seat, a one-way valve plate is arranged on the position of the ring band of the valve seat, a multi-grooved valve plate is arranged on the side of the valve seat close to the recovery valve, a sealing valve plate is arranged on the outside of the multi-grooved valve plate, a plurality of annular grooves are opened on the side of the multi-grooved valve plate, and a small hole is opened on the side of the valve seat.

[0016] By adopting the above technical solution, the one-way valve disc can be clamped and set in the annular position of the valve seat, thereby forming a one-way valve structure. Since the multi-groove valve disc is grooved on the outside, the external oil can pass through the multi-groove valve disc and then through the small hole position opened in the valve seat to push open the one-way valve disc and flow into the floating sealing chamber.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. In the present invention, a floating sealing chamber, a piston and a valve plate sealing chamber are provided to replace the traditional valve plate sealing chamber, thereby forming a floating sealing structure, thereby improving the overall service life and durability.

[0019] 2. In the present invention, by providing a structure with an electromagnet core, the electromagnet core can control the movement of the core rod, and the floating structure composed of a floating sealing chamber, a piston and a valve plate sealing chamber can effectively adjust the damping force to the lowest level, thereby increasing the range of the damping force value, making it more adjustable, and ensuring the comfort of the car's driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the piston position of the present invention;

[0023] Figure 4 A structural cross-sectional view of the valve seat of the present invention;

[0024] Figure 5 Schematic diagram of the structure of the piston rod of the present invention.

[0025] Explanation of the numbers in the figure: 1. Piston rod; 101. Wiring harness; 102. Restoring valve; 2. Oil seal; 3. Guide seat; 4. Oil storage cylinder outer shell; 5. Working cylinder; 6. Compression valve assembly; 7. Lower chamber; 8. Upper chamber; 9. Outer chamber; 10. End cover; 11. Floating sealing chamber; 1101. Valve seat; 1102. Sealing cover assembly; 1103. Wave spring; 1104. One-way valve disc; 1105. Multi-groove valve disc; 1106. Sealing valve disc; 1107. Adjusting washer; 12. Piston; 1201. Connecting side hole; 13. Valve disc sealing chamber; 1301. Cut-off gap; 14. Circulation screw; 1401. Side groove; 15. Core rod; 16. Electromagnet core; 17. Metal frame; 18. Outer sealing ring; 19. Circular ring. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1 - Figure 5 As shown, the embodiment of the present invention provides: comprising an oil storage cylinder outer shell 4, a piston rod 1 is provided in the middle of the oil storage cylinder outer shell 4, a wiring harness 101 is fixedly installed in the middle of the piston rod 1, a recovery valve 102 is fixedly installed at one end of the wiring harness 101, the recovery valve 102 and one end of the oil storage cylinder outer shell 4 form an upper chamber 8, the recovery valve 102 and the other end of the oil storage cylinder outer shell 4 form a lower chamber 7, an electromagnet core 16 is provided in the middle of the recovery valve 102, a core rod 15 is provided on the side of the recovery valve 102, a floating sealing chamber 11 is fixedly installed on the side of the recovery valve 102, and a floating sealing chamber 11 is fixedly installed on the side of the recovery valve 102. A piston 12 is fixedly mounted on the side of the dynamic sealing chamber 11, and a connecting side hole 1201 is opened on the side of the piston 12. A sealing cover assembly 1102 is provided between the floating sealing chamber 11 and the piston 12. A valve sealing chamber 13 is clamped on the side of the piston 12, and a cut-off gap 1301 is opened on the side of the valve sealing chamber 13. A circulation screw 14 is provided in the middle of the valve sealing chamber 13, and a side hole is opened in the middle of the circulation screw 14. The circulation screw 14 is spatially connected to the core rod 15, and a spring device is fixedly mounted on the end of the core rod 15 close to the circulation screw 14.

[0028] The piston 12 is provided with side holes on the upper and lower sides. The side holes are inclined columnar pile-like structures. The compression valve assembly 6 is fixedly installed on the end of the inner cavity of the oil storage cylinder outer shell 4 away from the piston rod 1.

[0029] An oil seal 2 is fixedly installed at the contact position between the piston rod 1 and the outer shell 4 of the oil storage cylinder. A guide seat 3 is fixedly installed on the side of the piston rod 1 located on the oil seal 2. An end cover 10 is fixedly installed on the side of the outer shell 4 of the oil storage cylinder. The oil seal 2 can seal the oil inside the outer shell 4 of the oil storage cylinder, and the guide seat 3 can maintain the stability of the connection position.

[0030] A working cylinder 5 is fixedly mounted on the inner side wall of the oil storage cylinder outer shell 4. An outer chamber 9 is formed between the oil storage cylinder outer shell 4 and the working cylinder 5. When one of the lower chamber 7 or the upper chamber 8 becomes a high-pressure area and the other becomes a low-pressure area, part of the oil will flow from the high-pressure area into the low-pressure area through the outer chamber 9, thereby performing partial pressure release regulation.

[0031] The sealing cover assembly 1102 includes a metal frame 17 that is fitted onto the outside of an adjusting gasket 1107. An outer sealing ring 18 is provided in the middle of the outer side of the metal frame 17. A circular ring 19 is provided in the middle of the inner cavity of the metal frame 17. A wave spring 1103 is provided on the side of the metal frame 17. The circular ring 19 and the valve seat 1101 cooperate to seal. The outer wall of the adjusting gasket 1107 is smooth and cooperates with the inner wall of the valve seat 1101, thereby allowing it to slide up and down.

[0032] An annular side groove 1401 is provided on the side of the circulation screw 14 to divert the oil.

[0033] The floating sealing chamber 11 includes a valve seat 1101 arranged between the restoration valve 102 and the piston 12, and a ring band is provided on the side of the valve seat 1101. A one-way valve disc 1104 is provided at the position of the ring band of the valve seat 1101, and a multi-grooved valve disc 1105 is provided on the side of the valve seat 1101 close to the restoration valve 102. A sealing valve disc 1106 is provided on the outer side of the multi-grooved valve disc 1105 of the valve seat 1101, and a plurality of annular grooves are provided on the side of the multi-grooved valve disc 1105. A small hole is provided on the side of the valve seat 1101. The one-way valve disc 1104 can be clamped and arranged at the ring band position of the valve seat 1101, thereby forming a one-way valve structure. Since the outside of the multi-grooved valve disc 1105 is grooved, the external oil can pass through the multi-grooved valve disc 1105 and then through the small hole position of the valve seat 1101 to push open the one-way valve disc 1104 and flow into the interior of the floating sealing chamber 11.

[0034] The working principle of the present invention is as follows: the piston rod 1, the floating sealing chamber 11, the piston 12, the valve plate sealing chamber 13 and the circulation screw 14 are slidingly arranged in the middle of the working cylinder 5, and the oil pressure between the lower chamber 7 and the upper chamber 8 is in a balanced state. When the piston rod 1 is subjected to pressure, the structure composed of the piston rod 1 and the restoration valve 102, the floating sealing chamber 11, the piston 12 and the valve plate sealing chamber 13 moves along the inner wall of the working cylinder 5 toward the lower chamber 7. At this time, since the restoration valve 102 moves partly into the interior of the working cylinder 5, the pressure inside the lower chamber 7 will rise. At this time, the lower chamber 7 is a high-pressure area, the upper chamber 8 is a low-pressure area, and the outer chamber 9 is close to the upper chamber. The side of the outer chamber 8 is also a low-pressure area, while the side of the outer chamber 9 close to the lower chamber 7 is a high-pressure area. At this time, the oil inside the lower chamber 7 will flow from the high-pressure area to the low-pressure area. Part of the oil will be discharged from the lower chamber 7 to the outer chamber 9 through the throttle gap of the compression valve assembly 6, and part of the oil will be discharged to the upper chamber 8 through the structure of the piston rod 1, floating seal chamber 11, piston 12 and valve plate seal chamber 13. Due to the large valve system stiffness of the compression valve assembly 6, the flow rate of the oil passing through the compression valve assembly 6 is small, while the amount of oil passing through the structural position of the piston rod 1, floating seal chamber 11, piston 12 and valve plate seal chamber 13 is large, thereby generating the main compression resistance;

[0035] While the above compression is being performed, the structure composed of the piston rod 1, the restoring valve 102, the floating sealing chamber 11, the piston 12 and the valve plate sealing chamber 13 moves along the inner wall of the working cylinder 5 to the lower chamber 7. The high-pressure oil inside the lower chamber 7 passes through the cut-off gap 1301 of the valve plate sealing chamber 13 and enters the connection position of the valve plate sealing chamber 13 and the piston 12. Then, the oil flows into the floating sealing chamber 11 through the side groove 1401 on the side of the circulation screw 14. At this time, a wave spring 1103 is provided between the metal skeleton 17 and the valve seat 1101, and a cavity is formed between the valve seat 1101 and the metal skeleton 17. The oil will pass through the side groove 1401 into the inside of this cavity. At the same time, due to the high pressure inside the lower chamber 7, the connection position of the piston 12 and the metal skeleton 17 opens. A leakage hole is provided, and the oil inside the lower chamber 7 will pass through the connecting side hole 1201 into between the piston 12 and the metal skeleton 17, overcoming the elastic force of the wave spring 1103, the pressure in the cavity formed between the valve seat 1101 and the metal skeleton 17, and pushing open the sealing cover assembly 1102, so that the sealing cover assembly 1102 moves along the adjusting gasket 1107. At this time, a circumferential gap is formed between the sealing cover assembly 1102 and the piston 12, and the high-pressure oil inside the lower chamber 7 is depressurized through this oil circuit. Since a side hole is provided in the middle of the circulation screw 14, the high-pressure oil inside the lower chamber 7 will push open the core rod 15 and enter the interior of the upper chamber 8 through the diversion of the side hole. The operator can control the ejection force of the electromagnet core 16, and then control the pressure in the inner cavity of the floating sealing chamber 11, thereby realizing active control of the damping force.

[0036] The basic principles, main features, and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention claimed.

Claims

1. A floating seal type solenoid valve shock absorber, comprising an oil storage cylinder outer shell (4), characterized in that: A piston rod (1) is provided in the middle of the oil storage cylinder outer shell (4), a wiring harness (101) is fixedly installed in the middle of the piston rod (1), a recovery valve (102) is fixedly installed at one end of the wiring harness (101), the recovery valve (102) and one end of the oil storage cylinder outer shell (4) form an upper chamber (8), the recovery valve (102) and the other end of the oil storage cylinder outer shell (4) form a lower chamber (7), an electromagnet core (16) is provided in the middle of the recovery valve (102), and the recovery valve (102) is fixedly installed at one end of the oil storage cylinder outer shell (4). A core rod (15) is provided on the side of the original valve (102), a floating sealing chamber (11) is fixedly installed on the side of the restoration valve (102), a piston (12) is fixedly installed on the side of the floating sealing chamber (11), and the floating sealing chamber (111) includes a valve seat (1101) provided between the restoration valve (102) and the piston (12), a ring belt is provided on the side of the valve seat (1101), and a one-way valve plate (1104) is provided on the position of the ring belt of the valve seat (1101). The valve seat (1101) is provided with a multi-grooved valve disc (1105) on one side close to the recovery valve (102), and a sealing valve disc (1106) is provided on the outer side of the multi-grooved valve disc (1105). The multi-grooved valve disc (1105) is provided with a plurality of annular grooves on the side, and a small hole is provided on the side of the valve seat (1101). A connecting side hole (1201) is provided on the side of the piston (12), and a floating sealing chamber (11) and a piston (12) are provided between the floating sealing chamber (11) and the piston (12). A sealing cover assembly (1102) is provided, a valve plate sealing chamber (13) is fixedly provided on the side of the piston (12), a cut-off gap (1301) is provided on the side of the valve plate sealing chamber (13), a circulation screw (14) is provided in the middle of the valve plate sealing chamber (13), a side hole is provided in the middle of the circulation screw (14), the circulation screw (14) is spatially connected to the core rod (15), and a spring device is fixedly installed on one end of the core rod (15) close to the circulation screw (14); Side holes are provided on the upper and lower sides of the piston (12), and the side holes are inclined columnar pile-shaped structures. A compression valve assembly (6) is fixedly mounted on one end of the inner cavity of the oil storage cylinder outer shell (4) away from the piston rod (1).

2. The floating seal type solenoid valve shock absorber according to claim 1, characterized in that: An oil seal (2) is fixedly mounted at the contact position between the piston rod (1) and the outer shell of the oil storage cylinder (4); a guide seat (3) is fixedly mounted on the side of the piston rod (1) located on the oil seal (2); and an end cover (10) is fixedly mounted on the side of the outer shell of the oil storage cylinder (4).

3. The floating seal type solenoid valve shock absorber according to claim 1, characterized in that: A working cylinder (5) is fixedly mounted on the inner cavity side wall of the oil storage cylinder outer shell (4), and an outer cavity (9) is formed between the oil storage cylinder outer shell (4) and the working cylinder (5).

4. The floating seal type solenoid valve shock absorber according to claim 1, characterized in that: The sealing cover assembly (1102) comprises a metal frame (17) which is fitted onto the outside of the adjusting gasket (1107), an outer sealing ring (18) is provided in the middle of the outer side of the metal frame (17), a circular ring (19) is provided in the middle of the inner cavity of the metal frame (17), and a wave spring (1103) is provided on the side of the metal frame (17).

5. The floating seal type solenoid valve shock absorber according to claim 1, characterized in that: An annular side groove (1401) is provided on the side of the circulation screw (14).

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