Novel external electromagnetic valve assembly of shock absorber

Abstract

A novel external electromagnetic valve assembly of a shock absorber comprises an electromagnetic assembly and a valve body assembly, a guide-in valve sub assembly of the valve body assembly adjusts flow through a throttling valve piece, then adjustment of damping bandwidth is achieved, and the electromagnetic assembly is matched with a pilot hole and a damping hole of a main valve element of the valve body assembly through an electromagnetically-driven conical rod. The damping force can be stably established, the concept is novel, the design is ingenious, the stable damping force can be rapidly provided, and the effect is remarkable.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration reduction, in particular to an external electromagnetic valve used for an automobile shock absorber. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, the previous private passenger cars have gradually failed to meet people's needs. People have gradually accepted the changes brought about by intelligence, and have higher and higher requirements for intelligent driving and comfort. Traditional suspension and traditional shock absorbers can no longer meet the current needs, and the demand for intelligent suspension and intelligent shock absorbers is increasing. As for the current design and structure of intelligent suspension and intelligent shock absorber, according to its working principle, intelligent suspension and intelligent shock absorber require electromagnetic valves to provide damping force for adjustment and control. However, the electromagnetic valves currently used in the market have problems such as narrow adjustment bandwidth, large flow required for damping force establishment, slow damping establishment speed, unstable damping force establishment, and even some electromagnetic valves have many parts and difficult control, which cannot meet the current needs of intelligent suspension and intelligent shock absorber. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention proposes a novel shock absorber external solenoid valve assembly, which can effectively and quickly provide a stable damping force.

[0004] The technical problem to be solved by the present invention is achieved through the following technical solutions: A novel external electromagnetic valve assembly of a shock absorber comprises an electromagnetic component and a valve body component, wherein the electromagnetic component comprises a push rod located in the center and driven by an electromagnetic, a conical rod with a conical head being arranged at the front end of the push rod, the valve body component comprises a valve body, a main valve core and an inlet valve sub-assembly arranged in the valve body, a pilot hole matching with the conical head of the conical rod being arranged in the center of the main valve core, a damping hole for passing hydraulic oil being arranged on the side of the main valve core, the main valve core separates the valve body into two inner and outer volume chambers, the inner volume chamber and the outer volume chamber are connected through the damping hole, an oil outlet hole is arranged on the valve body corresponding to the outer volume chamber, an end face of the main valve core separated by the pilot hole and close to the conical rod is provided with an oil outlet channel, and the oil outlet channel is connected to the outer side of the valve body; a replaceable throttle valve plate is arranged on the inner side of the inlet valve sub-assembly, an oil passage channel for passing hydraulic oil is arranged on the inlet valve sub-assembly, and the edge of the throttle valve plate is blocked at the oil passage channel.

[0005] In the present invention, the throttle valve plate is a circular plate, and an oil groove sunken toward the center is provided on its edge. The replaceable throttle valve plates include various specifications with different overall outer diameters and different oil groove depths.

[0006] Furthermore, the edge of the introduction valve sub-assembly is clamped on the inner side of the valve body, and a fastening device for installing the throttle valve plate is provided on the inner side of the introduction valve sub-assembly.

[0007] Furthermore, a supporting valve seat is arranged between the inlet valve sub-assembly and the main valve core, and at least one oil-passing hole connected to the oil-passing channel of the inlet valve sub-assembly is arranged in the middle of the supporting valve seat. The inner side of the supporting valve seat limits the main valve core and forms a sealing pair, thereby enclosing an external volume cavity with the main valve core.

[0008] In the present invention, the side surface of the main valve core is clearance-matched with the inner side of the valve body, and a piston ring is provided on the side surface of the main valve core, and the side surface of the main valve core slides axially and sealingly along the inner side of the valve body.

[0009] In the present invention, the electromagnetic assembly includes a fixed annular coil and a moving iron core arranged at the center of the coil. The moving iron core is fixedly arranged concentrically with the ejector rod and moves axially under the electromagnetic drive of the coil.

[0010] Furthermore, the coil is fixed in an integrated yoke sleeve, which leaves a cylindrical magnetically moving space in the annular coil. A rear guide sleeve is provided at the bottom of the magnetically moving space, and a front guide sleeve is provided at the top of the magnetically moving space. The front guide sleeve and the rear guide sleeve constrain the axial movement range of the moving iron core and the push rod. Holes are left in the centers of the front guide sleeve and the rear guide sleeve, and the push rod moves axially through the center holes of the front guide sleeve and the rear guide sleeve.

[0011] Furthermore, one end of the coil is closed by an integrated yoke sleeve, and the other end is provided with a yoke piece, and the detachable structure of the yoke piece facilitates the maintenance and replacement of the coil.

[0012] In the present invention, a solenoid valve gland and a solenoid valve seat are arranged on the outside of the solenoid assembly and the valve body assembly, a plug is arranged at the end of the solenoid assembly, a sealing structure is arranged between the plug and the solenoid valve gland, and a sealing structure is arranged between the solenoid valve seat and the solenoid assembly inside the solenoid valve seat.

[0013] Compared with the prior art, the present invention has the following advantages: The present application constitutes a three-stage regulation of hydraulic oil, which can fully realize the precise regulation and control of the damping force, wherein the inlet valve sub-assembly is used as the first-stage regulation to regulate the flow of the hydraulic oil entering, the main valve core is used as the second-stage regulation to regulate the volume change of the hydraulic oil in the two volume chambers inside and outside the main valve core, and the cone rod and electromagnetic assembly are used as the third-stage regulation to regulate the thrust of the cone rod on the main valve core through different current control of the electromagnetic assembly, thereby regulating the pressure peak when the hydraulic oil breaks through the pilot hole; The inner volume chamber and the outer volume chamber are connected by the damping hole in the present application. When the solenoid valve provides damping for the main valve core, a pressure difference can be formed between the inner volume chamber and the outer volume chamber, thereby achieving a stable output of the damping force at the fastest speed. The present application can control the flow of hydraulic oil and adjust the lower limit of the damping bandwidth by introducing a throttle valve plate provided at the valve sub-assembly. At the same time, the throttle valve plate can be replaced, so that the entire solenoid valve assembly has different damping bandwidth adjustment ranges. In the present application, the pilot hole and the damping hole are both arranged on the main valve core, so that only one main valve core part can realize the adjustment of the damping force, which is convenient for maintenance and replacement; The conical head of the conical rod in the present application cooperates with the pilot hole, which can not only seal the pilot hole, but also achieve a good self-centering effect; The present application ensures accurate adjustment of the hydraulic oil and precise control of the damping force output through multiple sealing structures, and has a long service life.

[0014] Therefore, the present invention has novel conception and ingenious design, can quickly provide stable damping force, and has remarkable effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention (the solenoid valve gland and the solenoid valve seat are not shown); Figure 2 It is a schematic diagram of the structure of the throttle valve plate of the present invention.

[0016] In the figure: the inlet valve sub-assembly 1, the screw 2, the throttle valve plate 3, the nut 4, the support valve seat 5, the valve body 6, the oil outlet hole 7, the main valve core 8, the pilot hole 9, the damping hole 10, the coil 11, the moving iron core 12, the push rod 13, the front guide sleeve 14, the rear guide sleeve 15, the yoke plate 16, the integrated yoke sleeve 17, the tapered rod 18, the oil outlet channel 19, the oil hole 20, the sealing ring 21, the plug 22, the oil groove 23; the outer volume chamber A, the inner volume chamber B, the magnetic dynamic space C. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0018] A novel shock absorber external solenoid valve assembly comprises a solenoid component and a valve body 6 component. A solenoid valve gland and a solenoid valve seat are arranged on the outside of the solenoid component and the valve body 6 component. A plug 22 is arranged at the end of the solenoid component.

[0019] exist Figure 1In the figure, the electromagnetic component includes a ring-shaped coil 11 and a moving iron core 12 arranged at the center of the coil 11, the coil 11 is fixed in an integrated yoke sleeve 17, the integrated yoke sleeve 17 leaves a cylindrical magnetic dynamic space C in the ring-shaped coil 11, a rear guide sleeve 15 is arranged at the bottom of the magnetic dynamic space C, a front guide sleeve 14 is arranged at the top of the magnetic dynamic space C, the front guide sleeve 14 and the rear guide sleeve 15 constrain the axial movement range of the moving iron core 12, the moving iron core 12 is concentrically fixed with a push rod 13, the push rod 13 passes through the center holes of the front guide sleeve 14 and the rear guide sleeve 15 and moves axially, and a conical rod 18 with a conical head is arranged at the front end of the push rod 13; one end of the coil 11 is closed by the integrated yoke sleeve 17, and the other end is provided with a yoke sheet 16.

[0020] The valve body 6 assembly includes a valve body 6 and a main valve core 8 disposed in the valve body 6, a support valve seat 5 and an inlet valve sub-assembly 1. A pilot hole 9 matching the conical head of the tapered rod 18 is provided at the center of the main valve core 8. A damping hole 10 for the passage of hydraulic oil is provided on the side of the main valve core 8. The main valve core 8 separates the valve body 6 into two inner and outer volume chambers. The inner volume chamber B and the outer volume chamber A are connected through the damping hole 10. An oil outlet hole 7 is provided on the valve body 6 corresponding to the outer volume chamber A. The main valve core 8 separated by the pilot hole 9 is close to the tapered rod 18. An oil outlet channel 19 is provided on the end face of one side, and the oil outlet channel 19 is connected to the outside of the valve body 6. The side of the main valve core 8 is matched with the inner side of the valve body 6 in a clearance, and a piston ring is provided on the side of the main valve core 8. The side of the main valve core 8 slides along the axial sealing inside the valve body 6; the edge of the inlet valve sub-assembly 1 is clamped on the inner side of the valve body 6, and a replaceable throttle valve plate 3 is provided on the inner side of the inlet valve sub-assembly 1. The inlet valve sub-assembly 1 is provided with an oil passage for the hydraulic oil to pass through, and the edge of the throttle valve plate 3 is blocked at the oil passage, such as Figure 2 As shown, the throttle valve plate 3 is a circular plate, and an oil groove 23 recessed toward the center is opened on its edge. A fastening device is arranged in the center of the inlet valve sub-assembly 1, and the fastening device is a threaded screw 2 and a nut 4. The throttle valve plate 3 is passed through the screw 2, and the nut 4 is sleeved on the free end of the screw 2 to install, adjust and fix the throttle valve plate 3; the support valve seat 5 is arranged between the inlet valve sub-assembly 1 and the main valve core 8, and the inner side of the support valve seat 5 limits the main valve core 8 and forms a sealing pair, and encloses an external volume chamber A with the main valve core 8, and the middle part of the support valve seat 5 is provided with at least one oil hole 20 connected with the oil passage of the inlet valve sub-assembly 1.

[0021] In this embodiment, the replaceable throttle valve plate 3 has different specifications with different outer diameters R and different oil groove 23 depths H. The damping bandwidth adjustment range of the solenoid valve assembly can be adjusted by replacing the throttle valve plates 3 of different specifications.

[0022] In this embodiment, a sealing ring 21 is provided between the plug 22 and the solenoid valve gland, and a sealing ring 21 is provided between the solenoid valve seat and the solenoid assembly in the solenoid valve seat.

[0023] The present application is applied to automobile shock absorbers and is a structural assembly of a hydraulic oil-controlled solenoid valve for intelligently adjusting the vibration of the shock absorber. During actual adjustment, the solenoid valve pushes the push rod so that the conical rod 18 closes the pilot hole 9 of the main valve core 8. At this time, the hydraulic oil enters the valve body 6 from the oil passage of the inlet valve sub-assembly 1, and after the throttling adjustment of the throttle valve plate 3, the hydraulic oil enters the outer volume chamber A and leaves the valve body 6 through the oil outlet hole 7; when the damping force needs to be increased, the solenoid valve pulls back the push rod, the push rod retreats, and the pilot hole 9 is released. At this time, the hydraulic oil will also pass through the damping hole 10 into the inner volume chamber B, enter the other side of the main valve core 8 through the pilot hole 9, and leave the valve body 6 through the oil outlet channel 19. When the hydraulic oil flows through the damping hole 10, a pressure difference is generated between the outer volume chamber A and the inner volume chamber B, thereby forming a stable establishment of the damping force.

[0024] In summary, combined with the above-mentioned structure and working process, it can be found that the new shock absorber external solenoid valve assembly proposed in this application has a novel concept, ingenious design, can quickly provide stable damping force, and has significant effect.

Claims

1. A novel shock absorber external solenoid valve assembly, including a solenoid assembly and a valve body assembly, characterized in that: The electromagnetic component includes a push rod located in the center and driven by an electromagnetic, and a conical rod with a conical head is arranged at the front end of the push rod. The valve body component includes a valve body and a main valve core and an inlet valve sub-assembly arranged in the valve body. A pilot hole matching the conical head of the conical rod is opened in the center of the main valve core, and a damping hole for hydraulic oil to pass through is opened on the side of the main valve core. The main valve core separates the valve body into two inner and outer volume chambers, and the inner volume chamber and the outer volume chamber are connected through the damping hole. An oil outlet hole is opened on the valve body corresponding to the outer volume chamber, and an oil outlet channel is arranged on the end face of the main valve core separated by the pilot hole and close to the conical rod, and the oil outlet channel is connected to the outside of the valve body; a replaceable throttle valve plate is arranged on the inner side of the inlet valve sub-assembly, and an oil passage channel for hydraulic oil to pass through is opened in the inlet valve sub-assembly, and the edge of the throttle valve plate is blocked at the oil passage channel.

2. The solenoid valve assembly according to claim 1, characterized in that: The throttle valve plate is in the shape of a circular plate, and an oil passing groove which is sunken toward the center is provided on its edge.

3. The solenoid valve assembly according to claim 2, characterized in that: A fastening device for mounting a throttle valve plate is arranged inside the inlet valve sub-assembly.

4. The solenoid valve assembly according to claim 3, characterized in that: A supporting valve seat is arranged between the inlet valve sub-assembly and the main valve core. At least one oil-passing hole connected to the oil-passing channel of the inlet valve sub-assembly is arranged in the middle of the supporting valve seat. The outer side of the supporting valve seat supports the inlet valve sub-assembly, and the inner side of the supporting valve seat limits the main valve core and forms a sealing pair, thereby enclosing an external volume cavity with the main valve core.

5. The solenoid valve assembly according to claim 1, characterized in that: The side surface of the main valve core is matched with the inner side of the valve body in a clearance, and a piston ring is arranged on the side surface of the main valve core. The side surface of the main valve core slides axially and sealingly along the inner side of the valve body.

6. The solenoid valve assembly according to claim 1, characterized in that: The electromagnetic assembly comprises a fixed annular coil and a moving iron core arranged at the center of the coil. The moving iron core is fixedly arranged concentrically with the ejector rod and moves axially under the electromagnetic drive of the coil.

7. The solenoid valve assembly according to claim 6, characterized in that: The coil is fixed in an integrated yoke sleeve, which leaves a cylindrical magnetically moving space in the annular coil. A rear guide sleeve is provided at the bottom of the magnetically moving space, and a front guide sleeve is provided at the top of the magnetically moving space. The front guide sleeve and the rear guide sleeve constrain the axial movement range of the moving iron core and the push rod. Holes are left in the centers of the front guide sleeve and the rear guide sleeve, and the push rod moves axially through the center holes of the front guide sleeve and the rear guide sleeve.

8. The solenoid valve assembly according to claim 7, characterized in that: One end of the coil is closed by an integrated yoke sleeve, and the other end is provided with a yoke sheet.

9. The solenoid valve assembly according to claim 1, characterized in that: A solenoid valve gland and a solenoid valve seat are arranged on the outside of the solenoid assembly and the valve body assembly, a plug is arranged at the end of the solenoid assembly, a sealing structure is arranged between the plug and the solenoid valve gland, and a sealing structure is arranged between the solenoid valve seat and the solenoid assembly in the solenoid valve seat.

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