Floating sealing type electromagnetic valve shock absorber

Abstract

The invention discloses a floating sealing type electromagnetic valve shock absorber, and belongs to the technical field of automobile shock absorbers. The floating sealing type electromagnetic valve shock absorber comprises an oil storage cylinder outer shell, a piston rod is arranged in the middle of the oil storage cylinder outer shell, a wire harness is fixedly installed in the middle of the piston rod, and a recovery valve is fixedly installed at one end of the wire harness; an upper cavity is formed in one end of the rebound valve and one end of the oil storage cylinder outer shell, the floating sealing chamber, the piston and the valve plate sealing chamber are arranged to replace a traditional valve plate sealing chamber, so that a floating sealing structure is formed, the overall service life can be prolonged, durability is better, and the structure is simple and convenient due to the arrangement of an electromagnet core. The electromagnet core can control the core rod to move and is matched with a floating structure composed of the floating sealing chamber, the piston and the valve plate sealing chamber, the minimum damping force can be effectively adjusted, and therefore the range of the damping force value is increased, adjustability is wider, and the comfort of automobile driving is guaranteed.

Description

Technical Field

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

[0002] During the driving process of a vehicle, the shock absorber plays a vital role. It can effectively buffer road bumps and ensure the stability of the vehicle and the comfort of riding. The performance of the shock absorber depends largely on the sealing valve structure inside it.

[0003] At present, the common shock absorbers on the market adopt a double-sided sealing valve plate structure. The sealing valve plate of this structure is usually fixed by glue. However, during long-term use, the glue is affected by various factors such as vibration, temperature change and oil erosion during vehicle driving, and is prone to aging and falling off, which in turn leads to a decrease in sealing performance and affects the normal operation of the shock absorber. At the same time, the existing sealing valve plate skeleton is relatively thin, which makes the valve plate prone to deformation or even damage when it is subjected to the internal pressure of the shock absorber, greatly shortening the service life of the shock absorber. Compared with the floating structure, the durability of this double-sided sealing valve plate structure is obviously insufficient and cannot meet the needs of long-term stable driving of the vehicle. In addition, the existing structure has major defects in compression damping force. Under low current conditions, its compression damping force is too high, which causes the shock absorber to be too stiff when the vehicle is driving at low speed or passing through a slightly bumpy road, and cannot effectively filter out small vibrations, so that passengers in the car can clearly feel the bumps, which seriously affects the ride comfort. Moreover, the damping force bandwidth of the existing structure is narrow, that is, the damping force range that the shock absorber can effectively adjust is limited. 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 shock absorption 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 shock absorption 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] A floating seal type electromagnetic valve damper, comprising an oil storage cylinder outer shell, a piston rod is arranged 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 on one end of the wiring harness, the restoring valve and one end of the oil storage cylinder outer shell form an upper chamber, the restoring valve and the other end of the oil storage cylinder outer shell form a lower chamber, an electromagnet core is arranged in the middle of the restoring valve, a core rod is arranged on the side of the restoring valve, a floating sealing chamber is fixedly installed on the side of the restoring valve, a piston is fixedly installed on the side of the floating sealing chamber, a connecting side hole is opened on the side of the piston, a sealing cover assembly is arranged between the floating sealing chamber and the piston, a valve plate sealing chamber is clamped on the side of the piston, a cut-off gap is opened on the side of the valve plate sealing chamber, a circulation screw is arranged in the middle of the valve plate sealing chamber, a side hole is opened in the middle of the circulation screw, the circulation screw is connected to the core rod space, and a spring device is fixedly installed on one end of the core rod close to the circulation screw; The piston is provided with side holes on both sides, the side holes are inclined columnar pile-like structures, and 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.

[0006] 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] Furthermore, the sealing cover assembly includes a metal frame which is mounted on the outside of the adjusting gasket, an outer sealing ring is arranged in the middle of the outer side of the metal frame, a circular ring is arranged in the middle of the inner cavity of the metal frame, and a wave spring is arranged on the side of the metal frame.

[0011] 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.

[0012] Furthermore, a side edge of the circulation screw is provided with an annular side groove.

[0013] By adopting the above technical solution, the side grooves divert the oil.

[0014] 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 outer side 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.

[0015] By adopting the above technical solution, the one-way valve plate can be clamped and set in the annular position of the valve seat, so as to form a one-way valve structure. Since the multi-groove valve plate is provided with grooves on the outside, the external oil can pass through the multi-groove valve plate and then through the small hole position of the valve seat to push open the one-way valve plate and flow into the floating sealing chamber.

[0016] Compared with the prior art, the advantages of the present invention are: 1. In the present invention, a floating sealing chamber, a piston and a valve sealing chamber are provided to replace the traditional valve sealing chamber, thereby forming a floating sealing structure, thereby improving the overall service life and durability.

[0017] 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 minimum, thereby increasing the range of the damping force value, with wider adjustability, thereby ensuring the comfort of automobile driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A cross-sectional view of the overall structure of the present invention; Figure 3 It is a structural schematic diagram of the piston position of the present invention; Figure 4 It is a structural cross-sectional view of the valve seat of the present invention; Figure 5 It is a schematic structural diagram of the piston rod of the present invention.

[0019] 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 gasket; 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 skeleton; 18. Outer sealing ring; 19. Circular ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0021] 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 arranged 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 arranged in the middle of the recovery valve 102, a core rod 15 is arranged 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 installed on the side of the dynamic sealing chamber 11, a connecting side hole 1201 is opened on the side of the piston 12, a sealing cover assembly 1102 is arranged between the floating sealing chamber 11 and the piston 12, a valve sealing chamber 13 is clamped on the side of the piston 12, a cut-off gap 1301 is opened on the side of the valve sealing chamber 13, a circulation screw 14 is arranged in the middle of the valve sealing chamber 13, a side hole is opened in the middle of the circulation screw 14, the circulation screw 14 is spatially connected with 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; The piston 12 is provided with side holes on both sides, and the side holes are inclined columnar pile-like structures. The compression valve assembly 6 is fixedly installed at one end of the inner cavity of the oil storage cylinder outer shell 4 away from the piston rod 1; 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 at 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. The guide seat 3 can keep the connection position stable. 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. When one of the lower cavity 7 or the upper cavity 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 cavity 9, thereby performing partial pressure release regulation; The sealing cover assembly 1102 includes a metal frame 17 which is set on the outside of the adjusting gasket 1107. An outer sealing ring 18 is set in the middle of the outer side of the metal frame 17. A circular ring 19 is set in the middle of the inner cavity of the metal frame 17. A wave spring 1103 is set 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, so that it can slide up and down. An annular side groove 1401 is provided on the side of the circulation screw 14, and the side groove 1401 is used to divert the oil; The floating sealing chamber 11 includes a valve seat 1101 arranged between the restoring valve 102 and the piston 12, a ring band is opened on the side of the valve seat 1101, and a one-way valve plate 1104 is arranged at the position of the ring band of the valve seat 1101, a multi-grooved valve plate 1105 is arranged on the side of the valve seat 1101 close to the restoring valve 102, and a sealing valve plate 1106 is arranged on the outer side of the multi-grooved valve plate 1105 of the valve seat 1101, a plurality of annular grooves are opened on the side of the multi-grooved valve plate 1105, and a small hole is opened on the side of the valve seat 1101, and the one-way valve plate 1104 can be clamped and arranged at the position of the ring band of the valve seat 1101, so as to form a one-way valve structure, and since the multi-grooved valve plate 1105 is grooved on the outside, the external oil can pass through the multi-grooved valve plate 1105 and then through the small hole position of the valve seat 1101 to push open the one-way valve plate 1104 and flow into the floating sealing chamber 11.

[0022] Working principle of the present invention: the piston rod 1, the floating sealing chamber 11, the piston 12, the valve plate sealing chamber 13 and the circulation screw 14 are slidably 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, the recovery 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 recovery valve 102 moves partly into 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 9 close to the lower chamber 7 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 in the lower chamber 7 will flow from the high-pressure area to the low-pressure area. A part of the oil will be depressurized from the lower chamber 7 to the outer chamber 9 through the throttling slit of the compression valve assembly 6, and a part of the oil will be depressurized to the upper chamber 8 through the structure of the piston rod 1, the floating sealing chamber 11, the piston 12 and the valve plate sealing chamber 13. Since the valve system rigidity of the compression valve assembly 6 is relatively large, the flow rate of the oil passing through the compression valve assembly 6 is relatively small, while the amount of oil passing through the structural position of the piston rod 1, the floating sealing chamber 11, the piston 12 and the valve plate sealing chamber 13 is relatively large, thereby generating the main compression resistance; While the compression is being performed as described above, since 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 toward the lower chamber 7, the high-pressure oil inside the lower chamber 7 passes through the intercepting gap 1301 of the valve plate sealing chamber 13 and enters the connection position between the valve plate sealing chamber 13 and the piston 12, and 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 arranged 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, and the oil passes through the side groove 1401 and enters the interior of this cavity. At the same time, due to the high pressure inside the lower chamber 7, the connection position between the piston 12 and the metal skeleton 17 opens. A leakage hole is provided, and the oil in the lower chamber 7 will pass through the connecting side hole 1201 and enter 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 push 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 in the lower chamber 7 is depressurized through this oil circuit. Since a side hole is provided in the middle part of the circulation screw 14, the high-pressure oil in 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.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention, and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A floating seal type solenoid valve damper, 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 restoring valve (102) is fixedly installed at one end of the wiring harness (101), the restoring valve (102) and one end of the oil storage cylinder outer shell (4) form an upper chamber (8), the restoring 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 restoring valve (102), a core rod (15) is provided on the side of the restoring valve (102), a floating sealing chamber (11) is fixedly installed on the side of the restoring valve (102), and the floating sealing chamber (11) is provided with a core rod (15) on the side of the restoring valve (102). A piston (12) is fixedly mounted on the side, a connecting side hole (1201) is provided 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 plate sealing chamber (13) is clamped on the side of the piston (12), a flow intercepting 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 a core rod (15), and a spring device is fixedly mounted on one end of the core rod (15) close to the circulation screw (14); The piston (12) is provided with side holes on both upper and lower sides, and the side holes are inclined columnar pile-like 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 damper 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 (4) of the oil storage cylinder, 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 (4) of the oil storage cylinder.

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

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

6. The floating seal type solenoid valve damper according to claim 1, characterized in that: The floating sealing chamber (11) comprises a valve seat (1101) arranged between the recovery valve (102) and the piston (12), the side of the valve seat (1101) being provided with an annular band, the valve seat (1101) being provided with a one-way valve plate (1104) at the position of the annular band, the side of the valve seat (1101) being provided with a multi-grooved valve plate (1105) close to the recovery valve (102), the valve seat (1101) being provided with a sealing valve plate (1106) located on the outer side of the multi-grooved valve plate (1105), the side of the multi-grooved valve plate (1105) being provided with a plurality of annular grooves, and the side of the valve seat (1101) being provided with a small hole.

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