Electromagnetic valve for distribution valve

Abstract

The utility model discloses an electromagnetic valve for a distribution valve, which comprises a valve body, the valve body comprises a valve casing, an electromagnetic coil, a valve core, a static iron core and a movable iron core, the valve core, the static iron core and the movable iron core are connected in the valve casing, and an elastic piece is connected between the movable iron core and the static iron core; a soft first cushion block is connected to one end, close to the static iron core, of the movable iron core; a soft second cushion block is connected to one end, close to the movable iron core, of the static iron core; when the electromagnetic coil is electrified to enable the movable iron core to move towards the static iron core, the first cushion block and the second cushion block abut against each other to reduce the impact force between the movable iron core and the static iron core. According to the electromagnetic valve for the distribution valve, the impact force between the movable iron core and the static iron core can be effectively reduced, and the mute effect is good.

Description

Technical Field

[0001] The present application relates to the technical field of automobile air suspension system control valves, and in particular to a solenoid valve for a distribution valve. Background Art

[0002] The distribution valve, also known as the air distribution valve, is mainly used in vehicles with air suspension systems. It adjusts the air pressure and airflow of the air suspension system. When the vehicle body height changes during operation, the air distribution valve can be used to inflate or deflate the air spring airbag to adjust the vehicle's suspension height and hardness, thereby improving the vehicle's suspension performance and driving stability.

[0003] The distribution valve of the related art integrates multiple solenoid valves. These solenoid valves are connected to the compressor pipeline of the air suspension. Compressed air and an air tank inflate the solenoid valves. The air holes on the solenoid valves inflate and deflate the air springs of the air suspension system. The solenoid valves are important components of the distribution valve, and their performance directly affects the performance of the distribution valve. The solenoid valve used in the distribution valve of the related art includes a valve body, an electromagnetic drive unit and a valve core disposed within the valve body housing. The electromagnetic drive unit includes an electromagnetic coil, a movable iron core, a stationary iron core, and a spring disposed between the movable iron core and the stationary iron core. The valve core is connected to the movable iron core of the electromagnetic drive unit and can move synchronously with the movable iron core to close or open the valve port of the valve body. For example, the solenoid valve used in the distribution valve disclosed in prior Chinese patent applications such as CN215721142U and CN221504116U has a pad connected to the end face of the movable iron core near the stationary iron core. When the valve core is in the open state, the pad abuts against the stationary iron core. The pad is an elastic pad. When the valve core is driven to open, the pad can reduce the impact force between the valve core and the static iron core and reduce noise.

[0004] The solenoid valve of the above-mentioned related technology has the following defects in actual use: although a soft anti-collision pad is connected to the end face of the moving iron core close to the static iron core, the pad can reduce the impact force between the moving iron core and the static iron core. However, in actual use, since the pad itself has a certain hardness, when the solenoid valve is opened, the pad will inevitably emit a collision noise when colliding with the hard static iron core, resulting in a poor user experience. Utility Model Content

[0005] The technical problem to be solved by the present application is to overcome the defects of the above-mentioned related technologies and provide a solenoid valve for a distribution valve that can effectively reduce the impact force between the moving iron core and the static iron core and has a good silent effect.

[0006] The technical solution of the present application is to provide a solenoid valve for a distribution valve having the following structure:

[0007] include

[0008] The valve body includes a valve housing, an electromagnetic coil, a valve core, a static iron core, and a movable iron core connected to the valve housing. An elastic member is connected between the movable iron core and the static iron core, and the elastic member is used to ensure that the movable iron core always has a tendency to move away from the static iron core.

[0009] a soft first spacer connected to one end of the moving iron core close to the static iron core;

[0010] a soft second spacer connected to one end of the static iron core close to the moving iron core; and

[0011] When the electromagnetic coil is energized to cause the moving iron core to move toward the static iron core, the first cushion block and the second cushion block abut against each other to reduce the impact force between the moving iron core and the static iron core.

[0012] In some embodiments, a notch is provided on one end of the first spacer close to the static iron core, and / or a notch is provided on one end of the second spacer close to the moving iron core.

[0013] In some embodiments, the first cushion block and the second cushion block are both arranged in an annular shape, the projection of the first cushion block along the axial direction at least partially overlaps with the projection of the second cushion block along the axial direction, and the overlapping portion is arranged in an annular shape.

[0014] In some embodiments, the wall thickness of the second spacer is greater than the wall thickness of the first spacer.

[0015] In some embodiments, one end of the first spacer close to the static iron core extends axially outward from the end surface of the moving iron core.

[0016] In some embodiments, an axially concave mounting groove is provided on an end surface of the static iron core close to the movable iron core, and the second pad is connected to the mounting groove.

[0017] In some embodiments, the shape of the notch is one or more of a cuboid, a trapezoid, and an arc.

[0018] In some embodiments, an annular groove is provided on the outer circumferential wall of the moving iron core.

[0019] In some embodiments, the solenoid valve further includes a valve seat, one end of the valve housing is sealedly connected to the valve seat, and the other end of the valve housing is sealedly connected to the static iron core.

[0020] In some embodiments, a first air hole is provided in the center of the valve seat, and a second air hole is provided on the outer wall of the valve housing near one end of the valve seat, and a valve port is provided at the inner end of the valve seat to seal against the valve core.

[0021] To sum up, the solenoid valve for a distribution valve in the present application has the following advantages compared with the related art: the solenoid valve for a distribution valve is provided with a soft first pad at the end of the moving iron core, and a soft second pad at the end of the static iron core; the first pad and the second pad are both made of soft materials and have good flexible deformation ability; therefore, when the electromagnetic coil is energized to cause the moving iron core to move toward the static iron core to open the solenoid valve, the softness of the first pad and the second pad offsets each other to reduce the impact force between the moving iron core and the static iron core, thereby making the solenoid valve have a good silent effect when it is opened, and the user experience is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a solenoid valve for a distribution valve in some embodiments of the present application.

[0023] Figure 2 It is a cross-sectional view of a solenoid valve for a distribution valve in some embodiments of the present application.

[0024] Figure 3 This is a three-dimensional diagram of the cross-sectional structure of a solenoid valve for a distribution valve in some embodiments of the present application.

[0025] Figure 4 This is a structural diagram of Example 1 of a second gasket of a solenoid valve for a distribution valve of the present application.

[0026] Figure 5 This is a structural diagram of a second embodiment of a second gasket of a solenoid valve for a distribution valve of the present application.

[0027] Figure 6 This is a structural diagram of Example 3 of a second gasket of a solenoid valve for a distribution valve of the present application.

[0028] Figure 7 It is a schematic projection diagram of the first pad and the second pad of a solenoid valve for a distribution valve of the present application along the axial direction.

[0029] Description of reference numerals:

[0030] 1. Valve body, 100. Valve housing, 101. Electromagnetic coil, 102. Moving iron core, 103. Static iron core, 104. Elastic member, 105. Valve core, 106. First gasket, 107. Second gasket, 108. Notch, 109. Mounting groove, 110. Annular groove, 2. Valve seat, 200. First air hole, 201. Second air hole, 202. Valve port. DETAILED DESCRIPTION

[0031] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0032] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0033] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 3 As shown; the embodiment of the present application discloses a solenoid valve for a distribution valve, which is used for an air pressure distribution valve of an automobile air suspension system, and its structure includes a valve body 1 and a valve seat 2, the valve body 1 includes a valve housing 100, an electromagnetic coil 101, and a valve core 105, a static iron core 103 and a moving iron core 102 connected to the valve housing 100, and an elastic member 104 is connected between the moving iron core 102 and the static iron core 103, one end of the elastic member 104 is against the static iron core 103, and the other end of the elastic member 104 is against the moving iron core 102, so as to make the moving iron core 102 always have a movement tendency away from the static iron core 103; specifically, a first positioning hole is provided at the center of the inner end of the static iron core 103, and a second positioning hole is provided at the center of one end of the moving iron core 102 close to the static iron core 103, the elastic member 104 is a coil spring, and the two ends of the elastic member 104 are respectively connected to the first positioning hole and the second positioning hole.

[0036] The valve housing 100 of this embodiment is a metal shell. One end of the valve housing 100 is sealedly connected to the valve seat 2, and the other end of the valve housing 100 is sealedly connected to the static iron core 103. The movable iron core 102 is located between the static iron core 103 and the valve seat 2 and slides within the valve housing 100 along the axial direction of the valve housing 100. The end of the movable iron core 102 away from the static iron core 103 is connected to the valve core 105. The valve seat 2 has a central hole, which serves as a first air hole 200. A second air hole 201 is provided on the outer wall of the valve housing 100 near the valve seat 2. The inner end of the valve seat 2 is provided with a valve port 202 that abuts and seals against the valve core 105. When the valve core 105 closes the valve port 202, the first air hole 200 and the second air hole 201 are disconnected, closing the valve. Similarly, when the valve core 105 opens the valve port 202, the first air hole 200 and the second air hole 201 are connected, opening the valve.

[0037] In the above embodiment, an annular groove 110 is provided on the outer circumferential wall of the movable iron core 102. The provision of the annular groove 110 reduces the contact area between the movable iron core 102 and the inner wall of the valve housing 100, thereby making the movement of the movable iron core 102 smoother.

[0038] It is not difficult to understand that when the electromagnetic coil 101 is de-energized, the elastic force of the elastic member 104 causes the moving iron core 102 to move away from the static iron core 103 to close the valve port 202, and under the elastic force of the elastic member 104, the valve is in a closed state; when the electromagnetic coil 101 is energized, the electromagnetic coil 101 generates electromagnetic force, thereby magnetizing the static iron core 103 and the moving iron core 102, so that the two overcome the elastic force of the elastic member 104 under the action of mutual magnetic attraction, causing the moving iron core 102 to move toward the static iron core 103, so that the valve is in an open state.

[0039] In this embodiment, see Figure 2 and Figure 3As shown, the end of the moving iron core 102 close to the static iron core 103 is connected to a soft first pad 106 extending axially outward, and the end of the static iron core 103 close to the moving iron core 102 is connected to a soft second pad 107; when the electromagnetic coil 101 is energized to make the moving iron core 102 approach the static iron core 103, the first pad 106 and the second pad 107 are abutted against each other to reduce the impact force between the moving iron core 102 and the static iron core 103. That is, in this embodiment, in addition to providing a soft first pad 106 at the end of the moving iron core 102, the solenoid valve for the distribution valve is also provided with a soft second pad 107 at the end of the static iron core 103. The first pad 106 and the second pad 107 are both made of soft materials and have good flexible deformation capabilities. When the electromagnetic coil 101 is energized to cause the moving iron core 102 to move toward the static iron core 103 to open the solenoid valve, the first pad 106 and the second pad 107 are softly offset against each other. Compared with the solenoid valve in the related technology that only provides a buffer pad at the end of the moving iron core, the solenoid valve for the distribution valve can effectively reduce the impact force between the moving iron core 102 and the static iron core 103, thereby achieving a good silent effect when the solenoid valve is opened, and providing a good user experience.

[0040] In the above embodiment, the first cushion block 106 and the second cushion block 107 are both made of soft materials. The soft materials are soft materials in the prior art, such as rubber, plastic, foam material, etc.

[0041] It is not difficult to understand that when the moving iron core 102 moves toward the direction close to the static iron core 103, the first pad 106 and the second pad 107 are offset against each other. On this basis, there are the following implementation methods: the first is that one end of the first pad 106 close to the static iron core 103 extends axially outward from the end face of the moving iron core 102, and the end of the second pad 107 close to the moving iron core 102 does not extend out of the end face of the static iron core 103; the second is that one end of the first pad 106 close to the static iron core 103 extends axially outward from the end face of the moving iron core 102, and the end of the second pad 107 close to the moving iron core 102 extends axially outward from the end face of the static iron core 103; the third is that one end of the first pad 106 close to the static iron core 103 does not extend out of the end face of the moving iron core 102, and the end of the second pad 107 close to the moving iron core 102 extends axially outward from the end face of the static iron core 103. Specifically, in this embodiment, the end of the first spacer 106, which is closer to the static iron core 103, extends axially outward from the end face of the movable iron core 102, and the end of the second spacer 107, which is closer to the movable iron core 102, is flush with the end face of the static iron core 103 or is spaced a certain distance from the end face of the static iron core 103 without extending beyond the end face of the static iron core 103. This arrangement provides good connection stability for the second spacer 107, allowing it to maintain its position even when impacted by the first spacer 106.

[0042] Further in this embodiment, see Figure 7As shown, the first cushion block 106 and the second cushion block 107 are both arranged in an annular shape, and the projection of the first cushion block 106 along the axial direction at least partially overlaps with the projection of the second cushion block 107 along the axial direction, and the overlapping portion is as shown in FIG. Figure 7 The shaded portion of the is shown as a circular ring arrangement. Thus, when the first pad 106 hits the second pad 107, the first pad 106 can completely hit the second pad 107, thereby ensuring sufficient soft contact between the first pad 106 and the second pad 107, thereby further reducing the impact force therebetween and improving the quiet effect when the solenoid valve is opened.

[0043] Furthermore, in this embodiment, the wall thickness of the second pad 107 is greater than that of the first pad 106. In this way, when the first pad 106 hits the second pad 107, the first pad 106 is prevented from completely hitting the second pad 107 due to the deviation of the moving iron core 102, thereby ensuring that the first pad 106 can completely hit the second pad 107. In addition, in this embodiment, see Figure 2 As shown, an axially concave mounting groove 109 is provided on the end surface of the static iron core 103 near the movable iron core 102, and the second spacer 107 is connected to the mounting groove 109. This arrangement makes the installation of the second spacer 107 more convenient and can prevent the second spacer 107 from falling out of the mounting groove 109 when impacted, thereby improving the connection stability of the second spacer 107.

[0044] In the above embodiment, the first pad 106 and the second pad 107 are both arranged in an annular shape, and a notch is provided on the end of the first pad 106 close to the static iron core 103, and / or a notch is provided on the end of the second pad 107 close to the moving iron core 102. Figure 3 and Figure 4 As shown, the free ends of the first and second pads 106, 107 are each provided with a rectangular notch 108. The annular first and second pads 106, 107 significantly reduce the impact force between the moving iron core 102 and the static iron core 103. The provision of notches 108 prevents vacuum adsorption during rapid impact, which can make it difficult for the moving iron core 102 to separate from the static iron core 103. Furthermore, the provision of notches 108 also enhances the deformability of the first and second pads 106, 107, thereby further weakening or absorbing the impact force of the first and second pads 106, 107 and improving the sound silencing effect.

[0045] In some embodiments, see Figure 5 and Figure 6 As shown, the shape of the notch 108 is set to be trapezoidal, wherein, Figure 5 The structure shown is a trapezoidal structure with a large outer end and a small inner end. Figure 6What is shown is a trapezoidal structure with a small outer end and a large inner end. This not only avoids the defect that the first pad 106 and the second pad 107 produce vacuum adsorption during rapid collision, making it difficult for the moving iron core 102 to separate from the static iron core 103, but also can further better absorb the force when the first pad 106 and the second pad 107 collide.

[0046] In other embodiments, the shape of the notch 108 may also be set to be an arc shape.

[0047] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0048] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0049] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A solenoid valve for a distribution valve, characterized in that: include The valve body includes a valve housing, an electromagnetic coil, a valve core, a static iron core, and a movable iron core connected to the valve housing. An elastic member is connected between the movable iron core and the static iron core, and the elastic member is used to ensure that the movable iron core always has a tendency to move away from the static iron core. a soft first spacer connected to one end of the moving iron core close to the static iron core; a soft second spacer connected to one end of the static iron core close to the moving iron core; and When the electromagnetic coil is energized to cause the moving iron core to move toward the static iron core, the first cushion block and the second cushion block abut against each other to reduce the impact force between the moving iron core and the static iron core.

2. The solenoid valve for a distribution valve according to claim 1, characterized in that: A notch is provided on one end of the first spacer close to the static iron core, and / or a notch is provided on one end of the second spacer close to the moving iron core.

3. The solenoid valve for a distribution valve according to claim 1, characterized in that: The first cushion block and the second cushion block are both arranged in a circular ring shape, and the projection of the first cushion block along the axial direction at least partially overlaps with the projection of the second cushion block along the axial direction, and the overlapping portion is arranged in a circular ring shape.

4. The solenoid valve for a distribution valve according to claim 3, characterized in that: The wall thickness of the second cushion block is greater than the wall thickness of the first cushion block.

5. The solenoid valve for a distribution valve according to claim 4, characterized in that: One end of the first spacer close to the static iron core extends outwardly along the axial direction from the end surface of the moving iron core.

6. The solenoid valve for a distribution valve according to claim 5, characterized in that: An axially concave mounting groove is provided on an end surface of the static iron core close to one end of the movable iron core, and the second pad is connected in the mounting groove.

7. The solenoid valve for a distribution valve according to claim 2, characterized in that: The shape of the notch is one or more of a cuboid, a trapezoid and an arc.

8. The solenoid valve for a distribution valve according to claim 1, characterized in that: An annular groove is provided on the outer circumferential wall of the moving iron core.

9. The solenoid valve for a distribution valve according to claim 1, characterized in that: The solenoid valve further includes a valve seat, one end of the valve housing is sealedly connected to the valve seat, and the other end of the valve housing is sealedly connected to the static iron core.

10. The solenoid valve for a distribution valve according to claim 9, characterized in that: A first air hole is provided at the center of the valve seat, and a second air hole is provided on the outer wall of the valve housing close to one end of the valve seat. A valve port is provided at the inner end of the valve seat to seal against the valve core.

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