Valve body structure of switching valve for air suspension

Abstract

The utility model discloses a valve body structure of a switch valve for an air suspension, which relates to the technical field of switch valves and comprises a magnetism isolating sleeve, an inlet is arranged on the outer wall of the magnetism isolating sleeve, a valve seat is sleeved on the top of the magnetism isolating sleeve, an outlet is arranged at the center of the valve seat, a valve bush is fixedly sleeved on the outer wall of the magnetism isolating sleeve, and a valve rod is arranged on the valve bush. The outer wall of the magnetism isolating sleeve is sleeved with a driving coil, the bottom of the magnetism isolating sleeve is fixedly sleeved with a fixed iron core, a valve element assembly is placed in the magnetism isolating sleeve, a first spring is arranged between the valve seat and the valve element assembly, a second spring is arranged between the valve element assembly and the fixed iron core, and the valve element assembly comprises a first valve element. According to the utility model, through the improvement of the magnetism isolating sleeve, the fixed iron core and the valve core assembly, the valve body is simple and compact in structure, and on the premise that the functions of the valve body are ensured, the number of parts is optimized, the assembly steps are simplified, the production and equipment cost is reduced, and the production efficiency and the assembly precision are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to switch valve technical field especially relates to a switch valve valve body structure for air suspension. BACKGROUND

[0002] Air suspension system can improve the comfort and handling stability of the vehicle, and is widely used in luxury cars, off-road vehicles, buses, trucks and other vehicles. The exhaust valve adjusts the flow rate by adjusting the opening degree of the outlet and the valve opening time, so as to adjust the high pressure at the valve inlet to low pressure, and the exhaust valve is a key component in the air suspension system.

[0003] In the prior art, the Chinese patent document with publication number CN117515253A discloses an electromagnetic valve, an air suspension system and a vehicle, which records "the electromagnetic valve includes a valve body, a valve seat, a valve core assembly, a fixed iron and a driving coil, the valve core assembly includes a first valve core, a second valve core, a connecting piece and a plugging piece, the first valve core is arranged close to the fixed iron;The second valve core is movably connected to the first valve core, and the second valve core can move together with the first valve core;The connecting piece is connected with the first valve core, the connecting piece includes a shaft end limiting part, a preset gap allowing the second valve core to move axially relative to the first valve core is arranged between the shaft end limiting part and the axial end part of the first valve core, and the shaft end limiting part limits the limit position of the second valve core moving away from the first valve core;The plugging piece is arranged on the second valve core and used for plugging the outlet", the valve core has the advantages that the outlet can be opened without inputting a large current to the driving coil when there is a large pressure at the inlet, and the electromagnetic valve occupies a smaller space.

[0004] However, the valve body structure in the prior art still has the following defects or problems: the valve body structure in the prior art is relatively complex, the valve body structure in the prior art needs to be pressed several times, the movement structure parts in the valve body are complex, and the assembly is complex, so that the production cost is high and the assembly precision is difficult to guarantee, therefore, an air suspension switch valve body structure is needed to improve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the defects in the prior art and provides an air suspension switch valve body structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides an air suspension switch valve body structure, including the magnetic shield sleeve, the outer wall of magnetic shield sleeve is opened and is equipped with the entrance, the top of magnetic shield sleeve is sleeved with valve seat, the center of valve seat is equipped with the export, the outer wall of magnetic shield sleeve is fixedly sleeved with valve bushing, the outer wall of magnetic shield sleeve is sleeved with drive coil, the bottom of magnetic shield sleeve is fixedly sleeved with fixed iron core, the inside of magnetic shield sleeve places the valve core subassembly, be provided with first spring between valve seat and valve core subassembly, be provided with second spring between valve core subassembly and fixed iron core,

[0008] Valve core subassembly includes first valve core, first valve core is slidably sleeved with magnetic shield sleeve, the inside of first valve core is equipped with guide hole, first valve core is slidably sleeved with connecting piece through guide hole, the top of connecting piece is fixedly connected with second valve core, the top of second valve core is fixedly sleeved with sealing rubber, sealing rubber is used for blocking export.

[0009] Preferably, the outer wall of the valve seat is provided with a connecting groove, and the top of the magnetic shield sleeve is fixedly connected with the valve seat through the connecting groove.

[0010] Preferably, the bottom of the magnetic shield sleeve is circumferentially welded along the outer wall of the fixed iron core, and the upper end surface of the fixed iron core is inlaid with a buffer rubber.

[0011] Preferably, the upper end surface of the fixed iron core is provided with a limiting groove, the lower end surface of the first valve core is provided with a limiting hole corresponding to the limiting groove, one end of the second spring is located in the limiting groove, and the other end of the second spring is located in the limiting hole.

[0012] Preferably, the first valve core is made of magnetic material, and the connecting piece and the second valve core are made of magnetic shielding material.

[0013] Preferably, the connecting piece is convex, the lower surface of the second valve core is provided with a clamping groove, the top end of the connecting piece extends into the clamping groove, the top end of the connecting piece is interference-fitted with the second valve core through the clamping groove, and the first valve core is clearance-fitted with the connecting piece.

[0014] Preferably, the top of the second valve core is fixedly connected with a T-shaped block, the second valve core and the T-shaped block are integrally formed, the lower surface of the sealing rubber is provided with a mounting groove matched with the T-shaped block, and the sealing rubber is sleeved with the T-shaped block through the mounting groove.

[0015] Preferably, the top end of the first spring is in contact with the lower surface of the valve seat, and the bottom end of the first spring is in contact with the outer wall of the second valve core.

[0016] The utility model discloses an air suspension switch valve body structure, which comprises a valve body, a valve seat, a valve bushing, a drive coil, a fixed iron core, a valve core assembly, a first valve core, a connecting piece, a second valve core and sealing rubber. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the valve seat of the air suspension switch valve body structure of the utility model.

[0018] Figure 2 It is a front view of the air suspension switch valve body structure of the utility model.

[0019] Figure 3 It is the structure schematic view of the connecting piece and the second valve core of the air suspension switch valve body structure of the utility model. Figure 2 It is the sectional view of A-A of the air suspension switch valve body structure of the utility model.

[0020] Figure 4 It is a structure schematic view of the valve seat of the air suspension switch valve body structure of the utility model.

[0021] Figure 5 It is a structure schematic view of the fixed iron core of the air suspension switch valve body structure of the utility model.

[0022] Figure 6 It is a structure schematic view of the valve core assembly of the air suspension switch valve body structure of the utility model.

[0023] Figure 7 It is a structure schematic view of the second valve core and the sealing rubber of the air suspension switch valve body structure of the utility model.

[0024] Figure 8 It is a structure schematic view of the connecting piece and the second valve core of the air suspension switch valve body structure of the utility model.

[0025] Reference signs in the drawing: 1, magnetic isolation sleeve; 101, inlet; 2, valve seat; 201, outlet; 202, connecting groove; 3, valve bushing; 4, drive coil; 5, fixed iron core; 501, limiting groove; 6, valve core assembly; 601, first valve core; 602, connecting piece; 603, second valve core; 604, sealing rubber; 605, limiting hole; 606, guide hole; 607, clamping groove; 608, T-shaped block; 7, first spring; 8, second spring; 9, buffer rubber. DETAILED DESCRIPTION

[0026] Clearly, the described embodiments are merely part of the embodiments of the present application, but not all the embodiments.

[0027] Embodiment:

[0028] As shown in the accompanying Figure 1 to the accompanying Figure 8 As shown:

[0029] A switch valve body structure for air suspension, comprising a magnetic isolation sleeve 1, the outer wall of the magnetic isolation sleeve 1 is provided with an inlet 101, the top of the magnetic isolation sleeve 1 is sleeved with a valve seat 2, the center of the valve seat 2 is provided with an outlet 201, the outer wall of the magnetic isolation sleeve 1 is fixedly sleeved with a valve bushing 3, the outer wall of the magnetic isolation sleeve 1 is sleeved with a driving coil 4, the bottom of the magnetic isolation sleeve 1 is fixedly sleeved with a fixed iron core 5, the inside of the magnetic isolation sleeve 1 is placed with a valve core assembly 6, a first spring 7 is arranged between the valve seat 2 and the valve core assembly 6, a second spring 8 is arranged between the valve core assembly 6 and the fixed iron core 5.

[0030] The valve core assembly 6 comprises a first valve core 601, the first valve core 601 is slidably sleeved with the magnetic isolation sleeve 1, the inside of the first valve core 601 is provided with a guide hole 606, the first valve core 601 is slidably sleeved with a connecting piece 602 through the guide hole 606, the top end of the connecting piece 602 is fixedly connected with a second valve core 603, the top of the second valve core 603 is fixedly sleeved with a sealing rubber 604, and the sealing rubber 604 is used for plugging the outlet 201.

[0031] In the above technical scheme, when the pressure of the fluid at the inlet 101 is small, for example, the pressure of the fluid at the inlet 101 is less than the elastic force of the first spring 7, the driving coil 4 is energized, the first valve core 601 moves to the direction close to the fixed iron core 5 under the action of the magnetic field, because the pressure of the fluid at the inlet 101 is less than the elastic force of the first spring 7, the first spring 7 pushes the second valve core 603 to move to the direction close to the first valve core 601 to overcome the pressure of the fluid, and then drives the sealing rubber 604 to move so that the sealing rubber 604 no longer plugs the outlet 201;

[0032] When the pressure of the fluid at the inlet 101 is large, for example, the pressure of the fluid at the inlet 101 is greater than or equal to the elastic force of the first spring 7, the driving coil 4 is energized, the first valve core 601 starts to move to the direction close to the fixed iron core 5 in the process of the magnetic field, because the pressure of the fluid at the inlet 101 is greater than or equal to the elastic force of the first spring 7, the first spring 7 cannot push the second valve core 603 to move, at this time, the second valve core 603 and the sealing rubber 604 will not move, and the sealing rubber 604 is still in the state of plugging the outlet 201;

[0033] When the sum of the electromagnetic force exerted on the first valve core 601 by the magnetic field and the force exerted on the second valve core 603 by the first spring 7 is greater than the pressure of the fluid at the inlet 101, the first valve core 601 drives the second valve core 603 and the sealing rubber 604 to move towards the fixed iron core 5 through the connecting piece 602, so that the sealing rubber 604 is no longer in the state of blocking the outlet 201.

[0034] It is worth mentioning that the elastic force of the second spring 8 is greater than that of the first spring 7, so that the sealing rubber 604 can overcome the elastic force of the first spring 7 and block the outlet 201 under the pushing of the second spring 8.

[0035] The outer wall of the valve seat 2 is provided with a connecting groove 202, and the top of the magnetic shielding sleeve 1 is fixedly connected with the valve seat 2 through the connecting groove 202; the bottom of the magnetic shielding sleeve 1 is circumferentially welded along the outer wall of the fixed iron core 5, and the upper end surface of the fixed iron core 5 is embedded with a buffer rubber 9.

[0036] The upper end surface of the fixed iron core 5 is provided with a limiting groove 501, the lower end surface of the first valve core 601 is provided with a limiting hole 605 corresponding to the limiting groove 501, one end of the second spring 8 is located in the limiting groove 501, and the other end of the second spring 8 is located in the limiting hole 605.

[0037] The first valve core 601 is a magnetic conductive material, the connecting piece 602 and the second valve core 603 are magnetic shielding materials; the connecting piece 602 is convex, the lower surface of the second valve core 603 is provided with a clamping groove 607, the top end of the connecting piece 602 extends into the clamping groove 607, the connecting piece 602 and the second valve core 603 are in interference fit through the clamping groove 607, and the first valve core 601 and the connecting piece 602 are in clearance fit.

[0038] It is worth mentioning that, as shown in the accompanying drawings, Figure 8 a predetermined gap B is reserved axially between the first valve core 601 and the second valve core 603, and the distance of the predetermined gap B is adjusted through the connecting piece 602.

[0039] The top of the second valve core 603 is fixedly connected with a T-shaped block 608, the second valve core 603 and the T-shaped block 608 are integrally formed, the lower surface of the sealing rubber 604 is provided with a mounting groove matched with the T-shaped block 608, and the sealing rubber 604 and the T-shaped block 608 are mutually sleeved through the mounting groove.

[0040] As shown in the accompanying drawings, Figure 3 to Figure 6 The top end of the first spring 7 is in contact with the lower surface of the valve seat 2, and the bottom end of the first spring 7 is in contact with the outer wall of the second valve core 603.

[0041] In the above technical scheme, when the driving coil 4 changes from being electrified to being de-energized, the first spring 7 resets the valve core assembly 6, so that the outlet 201 is closed.

[0042] The specific use mode and role of the embodiment are as follows:

[0043] In use, during the working process, the sealing rubber 604 is closed to the outlet 201 under the spring force of the second spring 8 and the action of the air pressure when the driving coil 4 is not electrified; when the driving coil 4 is electrified, the first valve core 601 moves downward under the action of the electromagnetic force, at this time, the second valve core 603 keeps the original position due to the pressure difference between the two ends, and the sealing rubber 604 is still closed to the outlet 201; when the movement distance of the first valve core 601 reaches the maximum length of the preset gap, the first valve core 601 moves downward, and the first valve core 601 drives the second valve core 603 to move downward through the connecting piece 602, at this time, the outlet 201 is opened, at this time, the pressure difference between the two ends of the second valve core 603 is reduced, and the first spring 7 resets the second valve core 603 until the lower surface of the second valve core 603 is attached to the upper surface of the first valve core 601; when the driving coil 4 is de-energized, the valve core assembly 6 moves upward under the spring force of the second spring 8 to realize the closing of the outlet 201.

[0044] The above structure and process please refer to Figures 1-8 .

[0045] The installation method of the utility model, first, the valve seat 2 is fixedly sleeved on the magnetic isolation sleeve 1 through the outlet 201; then the first valve core 601 and the second valve core 603 are assembled together through the connecting piece 602, the top end of the connecting piece 602 is in interference fit with the second valve core 603 through the clamping groove 607, and the first valve core 601 is in clearance fit with the connecting piece 602; secondly, the first spring 7, the valve core assembly 6 and the second spring 8 are sequentially assembled into the magnetic isolation sleeve 1; then the fixed iron core 5 is pressed into the magnetic isolation sleeve 1, and the connection part of the fixed iron core 5 and the magnetic isolation sleeve 1 is circumferentially welded; then the valve bush 3 is sleeved on the suitable position of the outer circle surface of the magnetic isolation sleeve 1, and the connection part of the valve bush 3 and the magnetic isolation sleeve 1 is circumferentially welded; finally, the assembled valve body structure is sleeved in the driving coil 4, and the installation of the utility model is completed.

[0046] The above structure and process please refer to Figures 1-7 .

[0047] The above, only for the preferable specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model makes equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. An on-off valve body structure for an air suspension, comprising a magnetic shield (1), characterized in that, The outer wall of the magnetic shielding sleeve (1) has an inlet (101), the top of the magnetic shielding sleeve (1) is fitted with a valve seat (2), the center of the valve seat (2) has an outlet (201), the outer wall of the magnetic shielding sleeve (1) is fixedly fitted with a valve bushing (3), the outer wall of the magnetic shielding sleeve (1) is fitted with a drive coil (4), the bottom of the magnetic shielding sleeve (1) is fixedly fitted with a fixed iron core (5), the inside of the magnetic shielding sleeve (1) is filled with a valve core assembly (6), a first spring (7) is provided between the valve seat (2) and the valve core assembly (6), and a second spring (8) is provided between the valve core assembly (6) and the fixed iron core (5). The valve core assembly (6) includes a first valve core (601), which is slidably sleeved with a magnetic shielding sleeve (1). A guide hole (606) is provided inside the first valve core (601). A connector (602) is slidably sleeved on the first valve core (601) through the guide hole (606). A second valve core (603) is fixedly connected to the top of the connector (602). A sealing rubber (604) is fixedly sleeved on the top of the second valve core (603). The sealing rubber (604) is used to block the outlet (201).

2. The valve body structure of an on-off valve for an air suspension according to claim 1, wherein The outer wall of the valve seat (2) is provided with a connecting groove (202), and the top of the magnetic shielding sleeve (1) is fixedly snapped to the valve seat (2) through the connecting groove (202).

3. The valve body structure for an air suspension switching valve according to claim 1, characterized in that, The bottom of the magnetic shielding sleeve (1) is circumferentially welded to the outer wall of the fixed iron core (5), and the upper end face of the fixed iron core (5) is inlaid with buffer rubber (9).

4. The valve body structure for an air suspension switching valve according to claim 1, characterized in that, The upper end face of the fixed iron core (5) is provided with a limiting groove (501), and the lower end face of the first valve core (601) is provided with a limiting hole (605) corresponding to the limiting groove (501). One end of the second spring (8) is located in the limiting groove (501), and the other end of the second spring (8) is located in the limiting hole (605).

5. The valve body structure for an air suspension switching valve according to claim 1, characterized in that, The first valve core (601) is made of magnetic material, and the connector (602) and the second valve core (603) are both made of magnetic shielding material.

6. The valve body structure for an air suspension switching valve according to claim 5, characterized in that, The connector (602) is convex, and the lower surface of the second valve core (603) is provided with a slot (607). The top end of the connector (602) extends into the slot (607). The top end of the connector (602) and the second valve core (603) are press-fitted through the slot (607). The first valve core (601) and the connector (602) are clearance-fitted.

7. The valve body structure for an air suspension switching valve according to claim 6, characterized in that, The top of the second valve core (603) is fixedly connected to a T-shaped block (608). The second valve core (603) and the T-shaped block (608) are integrally formed. The lower surface of the sealing rubber (604) is provided with an installation groove that matches the T-shaped block (608). The sealing rubber (604) and the T-shaped block (608) are connected to each other through the installation groove.

8. The valve body structure for an air suspension switching valve according to claim 1, characterized in that, The top end of the first spring (7) contacts the lower surface of the valve seat (2), and the bottom end of the first spring (7) contacts the outer wall of the second valve core (603).

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