External electromagnetic valve for adjustable damping shock absorber

Abstract

The utility model discloses an external solenoid valve for an adjustable damping shock absorber, which comprises a valve body, an accommodating cavity is arranged in the valve body, and a main valve core is arranged in the accommodating cavity; a clamping groove is formed in the inner side of the main valve element, a spiral spring is arranged in the clamping groove, the spiral spring abuts against the main valve element, and the other end of the spiral spring abuts against the valve body. An ejector pin is arranged on the valve body in a sliding manner; a valve seat is fixedly arranged at the end, away from the electromagnetic assembly, of the valve body, a valve port is formed in the valve seat, a valve hole is formed in the outer circumferential face of the valve body, and a runner between the valve port and the valve hole can be separated by a main valve element. The self-adaptive damping electromagnetic valve has the advantages of being exquisite in design, capable of achieving self-adaptive damping of fluid, simple and convenient to operate, stable and reliable. And meanwhile, the cylindrical end I and the cylindrical end II guide the movement of the ejector pin, and the convex end is arranged to limit the movement position of the ejector pin, so that the movement accuracy is ensured, and the accuracy is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic technology, and more specifically, to an external solenoid valve for an adjustable damping shock absorber. Background Technology

[0002] Shock absorbers are used to suppress the oscillations caused by the rebound of shock-absorbing springs and the impact from the road surface. These devices are widely used in automobiles to dampen vibrations of the chassis and body, thereby improving ride comfort. When a car drives over uneven roads, although the shock-absorbing springs filter out road vibrations, they still experience reciprocating motion. Shock absorbers are used to suppress this spring bouncing. The inside of a shock absorber is filled with oil, and the piston has multiple holes. When the shock absorber moves up and down, the oil in the chamber flows back and forth through these holes, releasing a large amount of heat and converting the kinetic energy generated by vehicle bumps into heat energy.

[0003] For example, CN117662667A discloses a closed-loop control damping solenoid valve, relating to the field of vibration reduction technology. This closed-loop control damping solenoid valve mainly consists of an electromagnetic force input mechanism, a pilot valve, a main valve, and a Hall sensor. The Hall sensor, electromagnetic force input mechanism, pilot valve, and main valve are arranged sequentially from top to bottom. The vehicle controller provides an electrical signal to the electromagnetic force output mechanism to control the opening and closing of the pilot valve. By controlling the opening and closing of the pilot valve, the main valve is controlled. The Hall sensor detects the actual opening degree of the pilot valve through the electromagnetic force input mechanism and then feeds back the actual opening degree of the pilot valve to the vehicle controller as an electrical signal. However, this solenoid valve has a complex structure and an unreasonable layout. During long-term operation, the spring is prone to displacement under high-intensity vibration, affecting the damping effect and posing a safety hazard. In addition, if the spring ages, the main valve core will collide hard with the outer valve sleeve under fluid pressure, greatly affecting its service life. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an external solenoid valve for an adjustable damping shock absorber.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An external solenoid valve for an adjustable damping shock absorber includes a valve body fixed to one end of an electromagnetic assembly. The valve body has a receiving cavity containing a main valve core, the outer circumferential surface of which is always in close contact with the inner wall of the valve body. A slot is formed on the inner side of the main valve core, and a helical spring is disposed within the slot. One end of the helical spring abuts against the main valve core, and the other end abuts against the valve body. A ejector pin is slidably mounted on the valve body, the ejector pin including an integrally formed protruding end and a... Cylindrical ends I and II are located on both sides of the protruding end. The diameter of the protruding end is larger than the diameter of cylindrical ends I and II. Cylindrical end I always extends at least partially into the cylindrical hole opened on the main valve core. Cylindrical end II can penetrate the valve body and abut against the electromagnetic component. A valve seat is fixed at the end of the valve body away from the electromagnetic component. A valve port is opened on the valve seat. A valve hole is opened on the outer circumferential surface of the valve body. The flow channel between the valve port and the valve hole can be separated by the main valve core.

[0007] Preferably, a cylindrical block is fixedly disposed within the valve body, a helical spring is sleeved on the cylindrical block, a through hole is provided on the cylindrical block, and the cylindrical end II passes through the through hole and abuts against the electromagnetic component.

[0008] Preferably, a sliding groove is formed on the outer circumferential surface of the valve body, and a sliding hole is formed on the valve body, the sliding hole communicating with the outside through the sliding groove.

[0009] Preferably, the electromagnetic component includes a housing and a coil. The housing has a hollow cavity, and an armature adapted to it is slidably disposed in the hollow cavity. A fixed iron core is disposed on one side of the armature and fixed on the housing. A push rod is fixed on the armature and can abut against the ejector pin.

[0010] Preferably, the housing includes at least an inner shell and a matching outer shell, the outer shell and the inner shell working together to clamp the coil frame, a coil is wound on the coil frame, and the coil is sleeved on the outside of the armature.

[0011] Preferably, the outer shell and the inner shell are provided with retaining ring grooves, and retaining rings adapted to them are provided in the retaining ring grooves.

[0012] Preferably, a sealing groove is formed on the outer circumferential surface of the inner shell, and a sealing ring adapted to it is provided in the sealing groove, which can abut against the outer shell.

[0013] Preferably, the hollow cavity is further provided with a stop plug fixed on the housing, and the armature is provided with bearing sleeves on both sides of the push rod, the bearing sleeves being respectively provided on the stop plug and the inner housing.

[0014] The beneficial effects of this utility model are mainly reflected in:

[0015] 1. With its ingenious design, this solenoid valve achieves adaptive damping of the fluid, offering simple, convenient, stable, and reliable operation. Furthermore, the special structural design of the ejector pin—with cylindrical ends I and II guiding its movement and the protruding end limiting its position—ensures precise movement and significantly improves accuracy. Additionally, the protruding end on the ejector pin also limits the position of the main valve core, preventing hard interference between the main valve core and the valve body and extending its service life.

[0016] 2. The helical spring acts as a damper for the main valve core during operation. After operation, it applies force to the main valve core, causing it to reset and sealing the valve port on the valve seat. Additionally, the cylindrical block positions and limits the helical spring, ensuring its accuracy and preventing misalignment or movement. This also significantly improves assembly convenience.

[0017] 3. The shell is made of an outer shell and an inner shell, which reduces the difficulty of operation, makes assembly more convenient, and ensures stable and reliable operation, greatly improving work efficiency. In addition, it also reduces processing costs and has a wide range of applicability.

[0018] 4. The sealing ring can prevent external dust or moisture from entering the housing, thus extending its service life.

[0019] 5. The bearing sleeve reduces vibration and offset of the push rod during operation, improves the accuracy of movement, and also reduces the friction coefficient between the push rod and the bearing sleeve, reducing wear on the push rod and extending its service life. Attached Figure Description

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0021] Figure 1 : A cross-sectional view of a preferred embodiment of this utility model;

[0022] Figure 2 : A perspective view of the valve body in a preferred embodiment of this utility model. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 2 As shown, this utility model discloses an external solenoid valve for an adjustable damping shock absorber, comprising at least an electromagnetic assembly 1. Specifically, the electromagnetic assembly 1 includes a housing 11, which includes an inner shell 111 and a matching outer shell 112. The outer shell 112 and the inner shell 111 cooperate to clamp the coil frame 17. The housing is constructed by splicing the outer shell and the inner shell, which reduces the difficulty of operation, makes assembly more convenient, ensures stable and reliable operation, greatly improves work efficiency, and also reduces processing costs, thus having wide applicability.

[0027] Furthermore, the outer shell 112 and the inner shell 111 are provided with snap ring grooves 113, and snap rings 114 adapted to them are provided in the snap ring grooves 113. A sealing groove 115 is provided on the outer circumferential surface of the inner shell 111, and a sealing ring 116 adapted to it is provided in the sealing groove 115. The sealing ring 116 can abut against the outer shell 112. The sealing ring 116 can prevent external dust or moisture from entering the shell, thus extending its service life.

[0028] The housing 11 has a hollow cavity 12, within which an armature 13 is slidably disposed. A fixed iron core 14 is fixed to the housing 11 on one side of the armature 13. A push rod 15 is fixed to the armature 13, and the push rod 15 can abut against the ejector pin 4. A coil 16 is wound on the coil frame 17, and the coil 16 is sleeved on the outside of the armature 13.

[0029] In addition, a stop plug 18 fixed to the housing 11 is provided inside the hollow cavity 12, and bearing sleeves 19 sleeved on the push rod 15 are provided on both sides of the armature 13. The bearing sleeves 19 are respectively provided on the stop plug 18 and the inner housing 111. The bearing sleeves can reduce the vibration and deviation of the push rod during operation, improve the accuracy of movement, and also reduce the friction coefficient between the push rod and the bearing sleeve, reduce the wear of the push rod, and extend its service life.

[0030] In this invention, a valve body 2 is fixedly mounted on one end of the housing 11. A receiving cavity 21 is formed inside the valve body 2, and a main valve core 3 is housed within the receiving cavity 21. The outer circumferential surface of the main valve core 3 is always in close contact with the inner wall of the valve body 2. A valve seat 5 is fixedly mounted on the end of the valve body 2 away from the electromagnetic component 1. A valve port 51 is formed on the valve seat 5, and a valve hole 22 is formed on the outer circumferential surface of the valve body 2. The flow path between the valve port 51 and the valve hole 22 can be separated by the main valve core 3. A sliding groove 25 is formed on the outer circumferential surface of the valve body 2, and a sliding hole 26 is formed on the valve body 2. The sliding hole 26 communicates with the outside through the sliding groove 25. A retaining groove 31 is formed on the inner side of the main valve core 3, and a helical spring 32 is housed within the retaining groove 31. One end of the helical spring 32 abuts against the main valve core 3, and the other end abuts against the valve body 2. In this invention, the helical spring acts as a damper for the main valve core 3 during operation, and applies force to the main valve core after operation to reset the main valve core and seal the valve port on the valve seat.

[0031] Furthermore, a cylindrical block 23 is fixedly installed inside the valve body 2, and the helical spring 32 is sleeved on the cylindrical block 23. A through hole 24 is provided on the cylindrical block 23, and the cylindrical end II 43 passes through the through hole 24 and abuts against the electromagnetic component 1. The cylindrical block 23 can position and limit the position of the helical spring, ensuring the accuracy of the helical spring's position, and at the same time, it can greatly improve the convenience of assembly.

[0032] Another key design feature of this utility model is that a push pin 4 is slidably mounted on the valve body 2. The push pin 4 includes an integrally formed protruding end 41 and cylindrical ends I 42 and II 43 disposed on both sides of the protruding end 41. The diameter of the protruding end 41 is larger than the diameter of the cylindrical ends I 42 and II 43. The cylindrical end I 42 always extends at least partially into the cylindrical hole 33 opened on the main valve core 3, and the cylindrical end II 43 can penetrate the valve body 2 and abut against the electromagnetic component 1. The special structural design of the push pin allows the cylindrical ends I 42 and II 43 to guide the movement of the push pin, and the protruding end 41 to limit the movement position of the push pin, ensuring the accuracy of movement and greatly improving precision.

[0033] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0034] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. An external solenoid valve for an adjustable damping shock absorber, characterized in that: The valve body (2) is fixed to one end of the electromagnetic component (1). A receiving cavity (21) is provided inside the valve body (2). A main valve core (3) is built into the receiving cavity (21). The outer circumferential surface of the main valve core (3) is always in close contact with the inner wall of the valve body (2). A slot (31) is provided on the inner side of the main valve core (3). A helical spring (32) is provided in the slot (31). One end of the helical spring (32) abuts against the main valve core (3), and the other end abuts against the valve body (2). A push pin (4) is slidably provided on the valve body (2). The push pin (4) includes an integrally formed protruding end (41) and cylindrical ends provided on both sides of the protruding end (41). I (42) and cylindrical end II (43), the diameter of the protruding end (41) is larger than the diameter of the cylindrical end I (42) and cylindrical end II (43), the cylindrical end I (42) always extends at least partially into the cylindrical hole (33) opened on the main valve core (3), the cylindrical end II (43) can penetrate the valve body (2) and abut against the electromagnetic component (1); a valve seat (5) is fixedly provided at one end of the valve body (2) away from the electromagnetic component (1), a valve port (51) is opened on the valve seat (5), a valve hole (22) is opened on the outer circumferential surface of the valve body (2), and the flow channel between the valve port (51) and the valve hole (22) can be separated by the main valve core (3).

2. The external solenoid valve for an adjustable damping shock absorber according to claim 1, characterized in that: A cylindrical block (23) is fixed inside the valve body (2), and a helical spring (32) is sleeved on the cylindrical block (23). A through hole (24) is opened on the cylindrical block (23), and the cylindrical end II (43) passes through the through hole (24) and abuts against the electromagnetic component (1).

3. The external solenoid valve for an adjustable damping shock absorber according to claim 2, characterized in that: The valve body (2) has a sliding groove (25) on its outer circumference and a sliding hole (26) on its surface. The sliding hole (26) is connected to the outside through the sliding groove (25).

4. The external solenoid valve for an adjustable damping shock absorber according to claim 1, characterized in that: The electromagnetic component (1) includes a housing (11) and a coil (16). The housing (11) has a hollow cavity (12). An armature (13) adapted to the hollow cavity (12) is slidably disposed in the hollow cavity (12). A fixed iron core (14) is fixed on one side of the armature (13) and a push rod (15) is fixed on the armature (13). The push rod (15) can abut against the ejector pin (4).

5. The external solenoid valve for an adjustable damping shock absorber according to claim 4, characterized in that: The housing (11) includes at least an inner shell (111) and a matching outer shell (112). The outer shell (112) and the inner shell (111) cooperate to clamp the coil frame (17). A coil (16) is wound on the coil frame (17). The coil (16) is sleeved on the outside of the armature (13).

6. The external solenoid valve for an adjustable damping shock absorber according to claim 5, characterized in that: The outer shell (112) and the inner shell (111) are provided with snap ring grooves (113), and snap rings (114) adapted to them are provided in the snap ring grooves (113).

7. The external solenoid valve for an adjustable damping shock absorber according to claim 6, characterized in that: A sealing groove (115) is provided on the outer circumferential surface of the inner shell (111), and a sealing ring (116) adapted to it is provided in the sealing groove (115), and the sealing ring (116) can abut against the outer shell (112).

8. The external solenoid valve for an adjustable damping shock absorber according to claim 5, characterized in that: The hollow cavity (12) is also provided with a stop plug (18) fixed on the housing (11), and the armature (13) is provided with bearing sleeves (19) sleeved on the push rod (15) on both sides. The bearing sleeves (19) are respectively set on the stop plug (18) and the inner housing (111).

Images