Valve sleeve with pressure cushion and solenoid valve

Abstract

The utility model provides a valve cover with slow pressure function, the valve cover with slow pressure function includes the main part along the axial extension, the first step part is arranged around the main part, the main part has the interface end with the armature plug -in cooperation, the first step part is close to the interface end setting, the first step part is far from the interface end one side recesses and forms a circle slow pressure groove to interface end. The utility model discloses a valve cover with slow pressure function and solenoid valve, through setting slow pressure groove in the first step part with valve body resistance, thereby can reduce the radial deformation of the valve cover with slow pressure function in the assembly process, thereby reduces the risk of the risk of the valve core occurrence card stagnation failure.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, specifically to a valve sleeve and solenoid valve with pressure-relieving function. Background Technology

[0002] With the development of the automotive industry, people have higher and higher requirements for cars. Cars are no longer just a means of transportation. During use, the requirements for comfort are also increasing. The main factor affecting comfort comes from the tuning of the car chassis. Therefore, more and more cars are starting to be equipped with air suspension systems. In the suspension system, the control precision and operational stability of the solenoid valves directly affect the tuning of the entire air suspension system.

[0003] Solenoid valves are extremely precise components with high requirements during production and processing. The production process involves press-fitting and riveting, which can easily lead to deformation of the valve sleeve inside the solenoid valve. This can increase the friction between the valve core armature and the valve sleeve, causing the valve core to jam, which in turn can lead to valve jamming and failure.

[0004] In view of this, it is necessary to improve the existing valve sleeve with pressure-relieving function to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a valve sleeve with a pressure-relieving function to solve the problem of valve jamming caused by excessive deformation of the valve sleeve during the press-fitting process of existing solenoid valves.

[0006] To achieve the above objectives, this utility model provides a valve sleeve with a pressure-relieving function. The valve sleeve with a pressure-relieving function includes a main body extending axially and a first stepped portion surrounding the main body. The main body has an interface end that engages with an armature. The first stepped portion is located near the interface end, and a pressure-relieving groove is formed by recessing the side of the first stepped portion away from the interface end toward the interface end.

[0007] As a further improvement of this utility model, the first step portion is annular and has a width of L, and the radial width L1 of the pressure relief groove is greater than 1 / 6L.

[0008] As a further improvement of this utility model, the width L1 of the pressure relief groove is 1 / 5L.

[0009] As a further improvement of this utility model, the valve sleeve with pressure relief function further includes a second step portion arranged around the main body portion. The second step portion is located between the first step portion and the interface end and is fixedly connected to the first step portion. The radial width of the second step portion is smaller than that of the first step portion.

[0010] As a further improvement of this utility model, the sum of the heights of the first step portion and the second step portion along the axial direction is d, and the depth of the pressure relief groove along the axial direction is d1, where d and d1 satisfy 1 / 10d≥d1≥1 / 12d.

[0011] As a further improvement of this utility model, the depth of the pressure relief groove is d1 = 1 / 12d.

[0012] As a further improvement of this utility model, the first step portion, the second step portion, and the main body portion are integrally formed.

[0013] This utility model also provides a solenoid valve, which includes a valve body, a valve sleeve with a pressure-relieving function as described above disposed in the valve body, a valve core housed in the valve sleeve with a pressure-relieving function, and an armature inserted into the valve sleeve with a pressure-relieving function from the interface end and fixedly connected to the valve core, wherein the first stepped portion abuts against the valve body radially.

[0014] As a further improvement of this utility model, the solenoid valve further includes an electromagnetic head for driving the armature to move axially and a return spring that abuts against the armature axially, the return spring being located at the end of the armature away from the valve core.

[0015] The beneficial effects of this utility model are: the valve sleeve and solenoid valve with pressure relief function of this utility model can reduce the radial deformation of the valve sleeve with pressure relief function during assembly by setting a pressure relief groove at the first step part that abuts against the valve body, thereby reducing the risk of valve core jamming failure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the solenoid valve of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the solenoid valve of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the solenoid valve of this utility model during assembly, showing the riveting fixture being pressed against the valve body.

[0019] Figure 4 yes Figure 3 A magnified structural diagram of region A in the middle;

[0020] Figure 5 This is a schematic diagram of the valve sleeve with pressure-relieving function according to this utility model. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] like Figures 1 to 5 As shown, the solenoid valve 100 of this utility model includes a valve body 1, a valve sleeve 2 with a pressure-relieving function disposed in the valve body 1, a valve core 3 housed in the valve sleeve 2 with a pressure-relieving function, an armature 4 inserted into the valve sleeve 2 with a pressure-relieving function from the interface end and fixedly connected to the valve core 3, a solenoid head 5 for driving the armature 4 to move axially, and a return spring 6 that abuts against the armature 4 axially.

[0025] The valve body 1 has a receiving space 11 to house the valve sleeve 2 with pressure-relieving function. The valve core 3 is located inside the valve sleeve 2 with pressure-relieving function and can move with the movement of the armature 4. The valve body 1 has a mounting port 12 that exposes the receiving space 11. During assembly, a riveting fixture 200 is used to press against the mounting port 12 to crush the step at the mounting port 12, thereby allowing the valve body 1 to fix the valve sleeve 2 with pressure-relieving function axially.

[0026] The reset spring 6 is located at the end of the armature 4 away from the valve core 3.

[0027] like Figure 4 and Figure 5 As shown, the valve sleeve 2 with pressure relief function includes a main body 21 extending axially, a first step 22 surrounding the main body 21, and a second step 23 surrounding the main body 21.

[0028] The main body 21 has an interface end that is inserted into the armature 4, and the interface end and the mounting port 12 have the same orientation, both facing the armature 4. The main body 21 is generally cylindrical.

[0029] The first step portion 22 is disposed near the interface end, and a pressure-relieving groove 24 is formed by the side of the first step portion 22 away from the interface end being recessed toward the interface end.

[0030] In this embodiment, the first stepped portion 22 abuts against the valve body 1 radially. The pressure-relieving groove 24 can absorb the deformation of the valve sleeve 2, which has a pressure-relieving function, caused by the riveting fixture 200 riveting the valve body 1 during production. This reduces the radial deformation of the valve sleeve 2, decreases the friction between the inner wall of the valve sleeve 2 and the valve core 3 and armature 4, thereby reducing the risk of the valve core 3 jamming and failing.

[0031] The first step portion 22 is annular and has a width of L. The radial width L1 of the pressure-relieving groove 24 is greater than 1 / 6L. In a preferred embodiment, the width L1 of the pressure-relieving groove 24 is 1 / 5L.

[0032] The second step portion 23 is located between the first step portion 22 and the interface end, and is fixedly connected to the first step portion 22. The radial width of the second step portion 23 is smaller than that of the first step portion 22. Since the first step portion 22 directly abuts against the valve body 1, the pressure relief groove 24 is provided on the first step portion 22.

[0033] The first step portion 22, the second step portion 23, and the main body portion 21 are integrally formed.

[0034] The sum of the axial heights of the first step portion 22 and the second step portion 23 is d, and the axial depth of the pressure-relieving groove 24 is d1. d and d1 satisfy 1 / 10d≥d1≥1 / 12d.

[0035] In a preferred embodiment, the depth d1 of the pressure relief groove 24 is 1 / 12d.

[0036] In the comparative example without the pressure-relief groove 24, during assembly, under a pressure of 45,000 Newtons, the radial deformation inside the valve sleeve was 3.5 μm, and valve jamming occurred. In this embodiment, using the same assembly method and under the same pressure, the deformation at the same position of the pressure-relief valve sleeve 2 was only 2.5 μm, and valve jamming did not occur. This demonstrates that the pressure-relief groove 24 effectively solves the valve jamming problem.

[0037] The valve sleeve 2 and solenoid valve 100 of this utility model with pressure relief function can reduce the radial deformation of the valve sleeve 2 with pressure relief function during assembly by providing a pressure relief groove 24 in the first step portion 22 that abuts against the valve body 1, thereby reducing the risk of valve core 3 jamming failure.

[0038] 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.

[0039] 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 valve sleeve with a pressure-relieving function, characterized in that: The valve sleeve (2) with pressure relief function includes a main body (21) extending axially and a first step (22) surrounding the main body (21). The main body (21) has an interface end that is inserted and engaged with the armature (4). The first step (22) is located close to the interface end, and a pressure relief groove (24) is formed on the side of the first step (22) away from the interface end.

2. The valve sleeve with pressure-relieving function according to claim 1, characterized in that: The first step portion (22) is annular and has a width of L, and the radial width of the pressure relief groove (24) is L1 > 1 / 6L.

3. The valve sleeve with pressure-relieving function according to claim 2, characterized in that: The width L1 of the pressure relief groove (24) is 1 / 5L.

4. The valve sleeve with pressure-relieving function according to claim 1, characterized in that: The valve sleeve (2) with pressure relief function also includes a second step (23) surrounding the main body (21). The second step (23) is located between the first step (22) and the interface end and is fixedly connected to the first step (22). The radial width of the second step (23) is smaller than that of the first step (22).

5. The valve sleeve with pressure-relieving function according to claim 4, characterized in that: The sum of the axial heights of the first step (22) and the second step (23) is d, and the axial depth of the pressure relief groove (24) is d1. d and d1 satisfy 1 / 10d≥d1≥1 / 12d.

6. The valve sleeve with pressure-relieving function according to claim 5, characterized in that: The depth of the pressure relief groove (24) is d1 = 1 / 12d.

7. The valve sleeve with pressure-relieving function according to claim 4, characterized in that: The first step portion (22), the second step portion (23), and the main body portion (21) are integrally formed.

8. A solenoid valve, characterized in that: The solenoid valve (100) includes a valve body (1), a valve sleeve (2) with pressure-relieving function as described in any one of claims 1-7 disposed in the valve body (1), a valve core (3) housed in the valve sleeve (2) with pressure-relieving function, and an armature (4) inserted into the valve sleeve (2) with pressure-relieving function from the interface end and fixedly connected to the valve core (3), wherein the first stepped portion (22) abuts against the valve body (1) radially.

9. The solenoid valve according to claim 8, characterized in that: The solenoid valve (100) further includes a solenoid head (5) for driving the armature (4) to move axially, and a return spring (6) that abuts against the armature (4) axially, the return spring (6) being located at the end of the armature (4) away from the valve core (3).

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