Solenoid valve and damper shock absorber

Abstract

The utility model provides a kind of electromagnetic valve and damping shock absorber, the electromagnetic valve includes hollowly arranged magnetic conducting shell, magnetic conducting piece being arranged in the magnetic conducting shell, copper ring gasket, the magnetic conducting shell includes the first annular block that first side wall is inwardly protruding and the second annular block that second side wall is inwardly protruding, first through -hole is formed in the first annular block middle portion, second through -hole is formed in the second annular block middle portion, the diameter of first through -hole is greater than the diameter of second through -hole, the magnetic conducting piece includes magnet and the fixed ring that one end of the magnet is radially outwardly protruding, the copper ring gasket is located between the second annular block and the fixed ring along axial direction.The utility model's electromagnetic valve, by setting copper ring gasket clamped between the second annular block and the fixed ring, copper ring gasket can be used to seal effect.By using interference fixed or crush fixed mode to fix the magnetic conducting piece and magnetic conducting shell, cost is low, and fixed effect is good.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valves, specifically to a solenoid valve and a damping shock absorber. Background Technology

[0002] Automotive shock absorbers are used to reduce vibrations during vehicle operation, protecting the vehicle body and providing a good driving experience. To improve driving comfort, some high-end cars use shock absorbers with electromagnetic damping structures. When the current flowing through the coil of the electromagnetic damping structure is small, the damping force is also small, and the stiffness of the shock absorber is small. As the current flowing through the coil increases, the damping force also increases, and the stiffness of the shock absorber increases.

[0003] The magnetic housing of existing solenoid valves used in damping shock absorbers not only needs to meet the requirement of preventing external leakage, but also needs to have stable magnetic conductivity to ensure that the hysteresis of the overall valve PQ curve is small, while reducing its processing and manufacturing costs. Existing technologies such as CN112747065 A ensure coaxiality by adding an external non-magnetic guide sleeve, and require welding to connect the guide sleeve and the magnetic housing, which is complex and costly.

[0004] Therefore, it is necessary to improve the existing solenoid valves to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a solenoid valve to solve the problems of complex manufacturing processes and high costs associated with existing solenoid valves.

[0006] To achieve the above objectives, this utility model provides an electromagnetic valve, which includes a hollow magnetic housing, a magnetically conductive element disposed within the magnetically conductive housing, and a copper ring gasket. The magnetically conductive housing includes a first annular block protruding inward from its sidewall and a second annular block protruding inward from its sidewall. A first through hole is formed through the center of the first annular block, and a second through hole is formed through the center of the second annular block. The diameter of the first through hole is larger than the diameter of the second through hole. The magnetically conductive element includes a magnetically conductive body and a fixing ring protruding radially outward from one end of the magnetically conductive body. The copper ring gasket is axially located between the second annular block and the fixing ring.

[0007] As a further improvement of this utility model, the magnetic housing and the magnetic component are riveted together by crushing the chamfer of the first annular block.

[0008] As a further improvement of this utility model, a plurality of crushing recesses (111) are arranged in an array along the circumferential direction on the first annular block (11). The crushing recesses (111) are formed by crushing, and the side of the crushing recesses (111) adjacent to the fixing ring (22) abuts against the fixing ring (22) along the axial direction.

[0009] As a further improvement of this utility model, the fixing ring is radially interference-fitted with the first annular block.

[0010] As a further improvement of this utility model, the fixing ring is provided with a guide portion on the side facing the second annular block.

[0011] As a further improvement of this utility model, the solenoid valve further includes a moving iron core, a stationary iron core, a push rod, and a guide sleeve disposed within the magnetic conductive element. The stationary iron core is located on the side close to the fixed ring, and the moving iron core is located on the side away from the fixed ring. One end of the push rod abuts against the moving iron core, and the other end passes through the stationary iron core axially. The guide sleeve is disposed around the push rod and abuts against the push rod and the stationary iron core radially.

[0012] As a further improvement of this utility model, the solenoid valve also includes a magnetic shielding plug, which abuts against the moving iron core and the magnetic conductor along the axial direction.

[0013] As a further improvement of this utility model, the solenoid valve further includes an electromagnetic coil and a mounting component for fixing the electromagnetic coil. The electromagnetic coil is located inside the magnetic housing and is located radially between the magnetic component and the side wall of the magnetic housing.

[0014] As a further improvement of this utility model, the magnetic housing is provided with a mounting groove at one end facing the mounting member, and the solenoid valve further includes a retaining spring housed in the mounting groove, the retaining spring being ring-shaped.

[0015] This utility model also provides a damping shock absorber, which includes the solenoid valve as described above.

[0016] The beneficial effects of this utility model are as follows: The solenoid valve of this utility model can achieve a sealing effect by setting a copper ring gasket that is held between the second annular block and the fixed ring. By using interference fit or crush fit to fix the magnetic conductive component and the magnetic conductive housing, the cost is low and the fixing effect is good. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the solenoid valve of this utility model; Figure 2 This is a cross-sectional structural diagram of the solenoid valve of this utility model; Figure 3 yes Figure 2 A magnified structural diagram of region A in the middle; Figure 4 This is a schematic diagram of the magnetic housing and magnetic components of the solenoid valve of this utility model; Figure 5This is a partial structural schematic diagram of the solenoid valve of this utility model; Figure 6 yes Figure 5 A magnified structural diagram of region B in the middle; Figure 7 This is a schematic diagram of the magnetic housing of the solenoid valve of this utility model; Figure 8 This is a schematic diagram of the magnetic conductive component of the solenoid valve of this utility model. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] 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. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] like Figures 1 to 8 As shown, the solenoid valve 100 of this utility model includes a hollow magnetic housing 1, a magnetic conductive element 2 disposed within the magnetic housing 1, and a copper ring gasket 3.

[0022] Both the magnetic housing 1 and the magnetic component 2 are made of magnetically conductive material.

[0023] The magnetic housing 1 includes a first annular block 11 protruding inward from the side wall and a second annular block 12 protruding inward from the side wall. A first through hole is formed through the middle of the first annular block 11, and a second through hole is formed through the middle of the second annular block 12. The diameter of the first through hole is larger than the diameter of the second through hole, and the first through hole and the second through hole are coaxially arranged.

[0024] The magnetic conductive component 2 includes a magnetic conductive body 21 and a fixing ring 22 that protrudes radially outward from one end of the magnetic conductive body 21. The copper ring gasket 3 is located axially between the second annular block 12 and the fixing ring 22.

[0025] In this embodiment, the first annular block 11 and the second annular block 12 form a step in the middle. The fixing ring 22 is held on the step and the copper ring gasket 3 is held on the second annular block 12 along the axial direction. The copper ring gasket 3 undergoes a certain deformation under pressure and can also play a sealing role.

[0026] In one embodiment, the retaining ring 22 is radially press-fitted with the first annular block 11.

[0027] The fixing ring 22 is radially interference-fitted with the first annular block 11. That is, by design, the diameter of the fixing ring 22 is slightly larger than the diameter of the first through hole. The magnetic conductive part 2 is fixed by interference fitting, which can eliminate the welding process, ensure coaxiality and save welding costs.

[0028] Furthermore, in this embodiment, the interference fit is controlled to be greater than 0.02mm. This satisfies the initial pressure fitting and hole alignment requirements, while also ensuring that the copper ring gasket 3 has an initial deformation and throttling effect, preventing immediate leakage under hydraulic pressure. The manufacturing and assembly cost of using the copper ring gasket 3 sealing method is lower than that of the split structure combined with laser welding.

[0029] In another embodiment, to achieve an interference fit, the magnetic housing 1 and the magnetic component 2 are riveted together by crushing the first annular block 11 at the chamfer. This riveting method provides higher stability, reduces the likelihood of the magnetic component 2 loosening, and ensures that the riveted magnetic component 2 and the magnetic housing 1 always move within the limited space created by the riveting. This results in a more stable magnetic path for the solenoid valve 100, with minimal variation in both radial and axial clearances. This improves the consistency and durability of the solenoid valve 100, and the crushing riveting method is significantly superior to laser welding in terms of cost and cleanliness.

[0030] like Figure 5 and Figure 6As shown, preferably, in this embodiment, a plurality of crushing recesses 111 are arranged in an array along the circumferential direction on the first annular block 11. The crushing recesses 111 are formed by crushing, and the side of the crushing recesses 111 adjacent to the fixed ring 22 abuts against the fixed ring 22 along the axial direction, so as to limit the fixed ring 22 from the axial direction.

[0031] To achieve better installation results, the fixing ring 22 is provided with a guide portion 221 on the side facing the second annular block 12. When the magnetic conductive component 2 is inserted and installed with the magnetic conductive housing 1, the guide portion 221 serves to guide the first annular block 11.

[0032] The magnetic conductive component 2 is integrally formed from the same material, so the magnetic conductive component 2 itself does not need to be connected by welding.

[0033] The solenoid valve 100 also includes a moving iron core 4, a stationary iron core 5, a push rod 6, and a guide sleeve 7 disposed within the magnetic conductive element 2. The stationary iron core 5 is located on the side closer to the fixed ring 22, and the moving iron core 4 is located on the side away from the fixed ring 22. One end of the push rod 6 abuts against the moving iron core 4, and the other end passes through the stationary iron core 5 axially. The guide sleeve 7 is disposed around the push rod 6 and abuts against the push rod 6 and the stationary iron core 5 radially.

[0034] The magnetic conductor 2 has an opening facing the mounting side, and the moving iron core 4 and the stationary iron core 5 are inserted into the magnetic conductor 2 through the opening.

[0035] In order to isolate the moving iron core 4 and the magnetic conductor 2, the solenoid valve 100 further includes a magnetic isolation plug 8, which abuts against the moving iron core 4 and the magnetic conductor 2 along the axial direction.

[0036] The solenoid valve 100 further includes an electromagnetic coil 9 and a mounting member 10 for fixing the electromagnetic coil 9. The electromagnetic coil 9 is located inside the magnetic housing 1 and is radially positioned between the magnetic conductive member 2 and the side wall of the magnetic housing 1. The electromagnetic coil 9 is used to provide magnetic force.

[0037] The magnetic housing 1 is provided with a mounting groove 13 at one end facing the mounting member 10. The solenoid valve 100 also includes a retaining spring 14 housed in the mounting groove 13. The retaining spring 14 is annular.

[0038] The solenoid valve 100 of this embodiment can be applied to a damping shock absorber, which includes the solenoid valve 100.

[0039] The solenoid valve 100 of this invention utilizes a copper ring gasket 3, which is held between the second annular block 12 and the fixed ring 22, to achieve a sealing effect. By using interference fit or crush fit to fix the magnetic conductive element 2 and the magnetic conductive housing 1, the invention achieves low cost and good fixing effect.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A solenoid valve, characterized in that: The solenoid valve (100) includes a hollow magnetic housing (1), a magnetic component (2) disposed in the magnetic housing (1), and a copper ring gasket (3). The magnetic housing (1) includes a first annular block (11) protruding inward from the side wall and a second annular block (12) protruding inward from the side wall. A first through hole is formed through the middle of the first annular block (11), and a second through hole is formed through the middle of the second annular block (12). The diameter of the first through hole is larger than the diameter of the second through hole. The magnetic component (2) includes a magnetic body (21) and a fixing ring (22) protruding radially outward from one end of the magnetic body (21). The copper ring gasket (3) is located axially between the second annular block (12) and the fixing ring (22).

2. The solenoid valve according to claim 1, characterized in that: The magnetic housing (1) and the magnetic component (2) are riveted together by crushing the first annular block (11) and chamfering it.

3. The solenoid valve according to claim 2, characterized in that: The first annular block (11) has a plurality of crushing holes (111) arranged in an array along the circumferential direction. The crushing holes (111) are formed by crushing. The side of the crushing hole (111) adjacent to the fixed ring (22) abuts against the fixed ring (22) along the axial direction.

4. The solenoid valve according to claim 1, characterized in that: The fixing ring (22) is radially press-fitted with the first annular block (11).

5. The solenoid valve according to claim 1, characterized in that: The fixing ring (22) has a guide part (221) on the side facing the second annular block (12).

6. The solenoid valve according to claim 1, characterized in that: The solenoid valve (100) also includes a moving iron core (4), a stationary iron core (5), a push rod (6), and a guide sleeve (7) disposed in the magnetic conductor (2). The stationary iron core (5) is located on the side close to the fixed ring (22), and the moving iron core (4) is located on the side away from the fixed ring (22). One end of the push rod (6) abuts against the moving iron core (4), and the other end passes through the stationary iron core (5) axially. The guide sleeve (7) is disposed around the push rod (6) and abuts against the push rod (6) and the stationary iron core (5) radially.

7. The solenoid valve according to claim 6, characterized in that: The solenoid valve (100) also includes a magnetic shielding insert (8), which abuts against the moving iron core (4) and the magnetic conductor (2) along the axial direction.

8. The solenoid valve according to claim 1, characterized in that: The solenoid valve (100) also includes an electromagnetic coil (9) and a mounting component (10) for fixing the electromagnetic coil (9). The electromagnetic coil (9) is located inside the magnetic housing (1) and is located radially between the magnetic component (2) and the side wall of the magnetic housing (1).

9. The solenoid valve according to claim 8, characterized in that: The magnetic housing (1) has a mounting slot (13) at one end facing the mounting member (10), and the solenoid valve (100) also includes a retaining spring (14) housed in the mounting slot (13), the retaining spring (14) being annular.

10. A damping shock absorber, characterized in that: The damping shock absorber includes a solenoid valve (100) as described in any one of claims 1-9.

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