Valve component for air suspension system

Abstract

A valve component for an air suspension system, the valve component comprising: an air inlet (11) and an air intake cavity (12) which are separated from each other, wherein the air intake cavity (12) communicates with air outlets (600) of the valve component for an air suspension system through a valve cavity of the valve component for an air suspension system; and an inflation valve (30) disposed in a path from the air inlet (11) to the air intake cavity (12). The inflation valve comprises: an air circuit board (31) provided with a first air circuit (311) and a second air circuit (312), the first air circuit (311) being in communication with the air inlet (11), and the second air circuit (312) being in communication with the air intake cavity (12); and a sealing assembly (32) assembled with the air circuit board (31), wherein the sealing assembly (32) can open a communication space communicating the first air circuit (311) and the second air circuit (312) under the action of air pressure from the first air circuit (311), and close the communication space in a natural state. The air inlet of the valve component for an air suspension system is separated from the air intake cavity, and the inflation valve is arranged between the air inlet and the air intake cavity to ensure that sufficient air supply pressure is delivered to the air intake cavity; and the inflation valve is integrated into the valve component for an air suspension system to guarantee stable air circuits without affecting the pipe connection of the valve component.

Description

Valve for air suspension system TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts, in particular to a valve for air suspension system. BACKGROUND

[0002] In an air suspension system, a suspension valve such as a solenoid valve is used to supply air to an air bag. In order to ensure sufficient air pressure supply to the air bag, a pressure regulating valve capable of increasing pressure needs to be connected to the front end of the suspension valve to accumulate air pressure to an appropriate size before delivering it to the suspension valve.

[0003] This way of additionally setting a pressure regulating valve at the front end of the suspension valve has problems such as inconvenient assembly and complex pipeline connection.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0005] Therefore, the present application provides a valve for air suspension system, which sets an inflation valve between the air inlet and the air cavity to ensure sufficient air supply pressure to the air cavity; the inflation valve of the present application is integrally arranged in the valve, without the need for additional installation outside the valve, ensuring stable air path and not affecting the pipeline connection of the valve.

[0006] According to one aspect of the present application, a valve for air suspension system is provided, comprising: a spaced air inlet and an air cavity, the air cavity being connected to an air outlet of the valve for air suspension system through a valve cavity of the valve for air suspension system; an inflation valve arranged in a path from the air inlet to the air cavity, the inflation valve comprising: an air path plate provided with a first air path and a second air path, the first air path being connected to the air inlet, and the second air path being connected to the air cavity; a sealing assembly assembled with the air path plate, the sealing assembly being capable of opening a communication space connecting the first air path and the second air path under the action of air pressure of the first air path and closing the communication space in a natural state.

[0007] In some embodiments, the air inlet and the air cavity are arranged in a valve body, the valve body being provided with a first channel connecting the air inlet and the first air path, and a second channel connecting the second air path and the air cavity.

[0008] In some embodiments, the air path plate has two opposite surfaces, wherein a first surface is assembled with the valve body and a second surface is assembled with the sealing assembly; the first air path extends on the first surface and leads from the first surface to the second surface, and the second air path leads from the second surface to the first surface and extends on the first surface.

[0009] In some embodiments, the first air path extends on the first surface in a curved manner, and the second air path extends on the first surface in a straight manner.

[0010] In some embodiments, the inflation valve further comprises a connecting plate assembled between the valve body and the air path plate, the connecting plate is provided with a first connecting hole communicating the first channel and the first air path, and a second connecting hole communicating the second air path and the second channel.

[0011] In some embodiments, the first channel and the first connecting hole, the first connecting hole and the first air path, the second air path and the second connecting hole, and the second connecting hole and the second channel are all sealed and assembled by a sealing gasket.

[0012] In some embodiments, the air suspension system valve further comprises a check valve provided in the second channel, the check valve is capable of opening the second channel under the action of the gas pressure of the second air path and cutting off the second channel in an initial state.

[0013] In some embodiments, the second channel is provided with a check cavity, the check valve has a tapered portion assembled in the check cavity and a pre-tightened elastic portion; in the initial state, the elastic portion pushes the tapered portion to seal against the port of the check cavity; under the action of the gas pressure of the second air path, the tapered portion overcomes the pushing force of the elastic portion and leaves the port of the check cavity.

[0014] In some embodiments, the sealing assembly comprises a sealing gasket and a pre-tightened elastic member; in the natural state, the elastic member pushes the sealing gasket to seal against the air path plate; under the action of the gas pressure of the first air path, the sealing gasket overcomes the pushing force of the elastic member and leaves the air path plate, and the air path plate and the sealing gasket form the communication space.

[0015] In some embodiments, the elastic member is installed in a pre-tightening cavity of an assembly seat, the sealing gasket is embedded in the end surface of the air path plate and presses the end surface of the elastic member and the pre-tightening cavity, the assembly seat is sealed and assembled with the air path plate and presses the edge of the sealing gasket.

[0016] In some embodiments, the end of the elastic member away from the sealing gasket is supported by an adjusting bolt at the bottom of the pre-tightening cavity.

[0017] In some embodiments, the air inlet is provided with a filter core mesh.

[0018] The present application has at least the following beneficial effects compared with the prior art:

[0019] The present application separates the air inlet of the valve for air suspension system from the air inlet cavity, and sets an inflation valve in the path from the air inlet to the air inlet cavity. The inflation valve is connected to the first air path of the air inlet and the second air path of the air inlet cavity through the air path plate, and is connected to the sealing assembly assembled with the air path plate, so as to realize the conduction of the first air path and the second air path under the action of the air pressure of the first air path, and to close the communication space of the first air path and the second air path by the sealing assembly when the air pressure of the first air path does not reach the set pressure, so as to ensure that the pressure delivered to the air inlet cavity meets the air supply pressure requirement.

[0020] The inflation valve of the present application is integrally arranged in the valve for air suspension system, without the need for additional installation outside the valve, which ensures stable air path and does not affect the pipeline connection of the valve.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings incorporated into the specification and forming a part thereof, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0023] Fig. 1 shows a cross-sectional structure schematic diagram of the valve for air suspension system in the embodiment of the present application;

[0024] Fig. 2 shows a schematic diagram of the external structure of the valve for air suspension system in the embodiment of the present application;

[0025] Fig. 3 shows a schematic diagram of the communication structure between the air inlet and the first air passage in the embodiment of the present application;

[0026] Fig. 4 shows an exploded structure schematic diagram of the inflation valve related components in the embodiment of the present application;

[0027] Fig. 5 shows an exploded structure schematic diagram of the check valve in the embodiment of the present application. DETAILED DESCRIPTION

[0028] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein. Rather, these implementations are provided as non-limiting examples, so that this application will fully convey the scope of the example implementations to those skilled in the art.

[0029] The accompanying drawings are included to provide a further understanding of principles of embodiments and no limitations on the principles of the application are intended to be derived therefrom. The drawings are included as part of this disclosure only to illustrate the example implementations and, therefore, should not be taken to limit the concepts to the examples shown in the drawings.

[0030] The terms "first", "second", and the like, as used in the description, do not imply any order, quantity, or importance, but are used to distinguish different components. The terms "front", "back", and the like, indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are used only to facilitate the description of the application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, in the description of the application, when it is said that a device is "connected" to another device, it includes not only the case of direct connection, but also the case of indirect connection through other elements.

[0031] It should be noted that the embodiments of the present application and the features in different embodiments can be combined with each other without conflict.

[0032] Fig. 1 shows a cross-sectional structure of the valve for air suspension system, Fig. 2 shows an appearance structure of the valve for air suspension system, Fig. 3 shows a communication structure between the air inlet and the first air passage, and Fig. 4 shows an exploded structure of the air charging valve related components; in combination with Figs. 1 to 4, the valve for air suspension system provided by the embodiments of the present application comprises:

[0033] The air inlet 11 and the air inlet cavity 12 are separated, wherein the air inlet cavity 12 is connected to the air outlet 600 of the valve for air suspension system through the valve cavity (the approximate position of the valve cavity is indicated as 500 in Fig. 2) of the valve for air suspension system;

[0034] The air charging valve 30 is arranged in the path from the air inlet 11 to the air inlet cavity 12, and the air charging valve 30 comprises:

[0035] The air path plate 31 is provided with the first air path 311 and the second air path 312, the first air path 311 is connected to the air inlet 11, and the second air path 312 is connected to the air inlet cavity 12;

[0036] The sealing assembly 32 is assembled with the air path plate 31, and the sealing assembly 32 can open the communication space connecting the first air path 311 and the second air path 312 under the action of the air pressure of the first air path 311 and close the communication space in a natural state.

[0037] The air intake port 11 and the air intake cavity 12 of the air suspension system valve are separated, and the inflation valve 30 is arranged in the path from the air intake port 11 to the air intake cavity 12. The inflation valve 30 is arranged by the air path plate 31 to respectively communicate the first air path 311 of the air intake port 11 and the second air path 312 of the air intake cavity 12, and by the sealing assembly 32 assembled with the air path plate 31, the first air path 311 and the second air path 312 are communicated under the action of the air pressure of the first air path 311, and when the air pressure of the first air path 311 does not reach the set pressure, the sealing assembly 32 seals the communication space of the first air path 311 and the second air path 312, so as to ensure that the pressure delivered to the air intake cavity 12 meets the air supply pressure requirement.

[0038] The inflation valve 30 of the present application is integrally arranged in the air suspension system valve, without the need for additional installation outside the valve, ensuring stable air path and not affecting the pipeline connection of the valve.

[0039] The air suspension system valve can be an electromagnetic valve or other suitable type of valve. The air outlet 600 of the air suspension system valve is connected to the air bag. By integrally arranging the inflation valve 30 between the air intake port 11 and the air intake cavity 12 of the air suspension system valve, the pressure delivered to the air intake cavity 12 meets the air supply pressure requirement, thereby ensuring that the air suspension system valve supplies sufficient gas pressure to the air bag and realizes the adjustment function of the air suspension system.

[0040] In some embodiments, the air intake port 11 and the air intake cavity 12 are arranged in the valve body 10, and the valve body 10 is provided with a first channel 110 communicating the air intake port 11 and the first air path 311, and a second channel 120 communicating the second air path 312 and the air intake cavity 12.

[0041] The first channel 110 and the second channel 120 of the valve body 10 realize the communication of the first air path 311 and the air intake port 11 and the communication of the second air path 312 and the air intake cavity 12.

[0042] In some embodiments, the air path plate 31 has two opposite surfaces, wherein the first surface 31a is assembled with the valve body 10, and the second surface 31b cooperates with the sealing assembly 32; the first air path 311 extends from the first surface 31a to the second surface 31b, and the second air path 312 extends from the second surface 31b to the first surface 31a.

[0043] The air path plate 31 is matched with the valve body 10 and the sealing assembly 32 through the opposite two surfaces. The first air path 311 extends on the first surface 31a and can store gas until the air pressure is enough to open the communication space. The second air path 312 extends on the first surface 31a and can adapt to the arrangement of the air inlet cavity 12 and extend to the vicinity of the air inlet cavity 12. The first air path 311 and the second air path 312 form ports on the second surface 31b, respectively, so as to realize communication and closure.

[0044] In other embodiments, the communication space can also be arranged in the air path plate 31, and the sealing assembly 32 is arranged in the communication space. The sealing assembly 32 can also open the communication space under the action of the air pressure of the first air path 311 and close the communication space in a natural state. Alternatively, the air path plate 31 can have other structures, as long as it can cooperate with the sealing assembly 32 to ensure that the pressure delivered to the air inlet cavity 12 meets the gas supply pressure requirement.

[0045] In some embodiments, the first air path 311 extends in a curved manner on the first surface 31a, and the second air path 312 extends in a straight line on the first surface 31a.

[0046] The first air path 311 extends in a curved manner on the first surface 31a, which is convenient for storing air pressure and making the air pressure delivered to the rear end sufficient. The second air path 312 extends in a straight line on the first surface 31a, which is convenient for smoothly delivering the gas to the air inlet cavity 12.

[0047] In some embodiments, the inflation valve 30 further comprises a connecting plate 33 assembled between the valve body 10 and the air path plate 31. The connecting plate 33 is provided with a first connecting hole 331 communicating the first channel 110 and the first air path 311 and a second connecting hole 332 communicating the second air path 312 and the second channel 120.

[0048] The connecting plate 33 serves as a connecting transition between the valve body 10 and the air path plate 31, so that the communication between the channels of the valve body 10 and the air paths of the air path plate 31 is smoothly realized through the connecting holes of the connecting plate 33.

[0049] In some embodiments, the first channel 110 and the first connecting hole 331, the first connecting hole 331 and the first air path 311, the second air path 312 and the second connecting hole 332, and the second connecting hole 332 and the second channel 120 are all sealed and matched by sealing gaskets.

[0050] Specifically, the first channel 110 and the first connecting hole 331 can be sealed by the first sealing washer 51. The first sealing washer 51 can be embedded in the end face of the first connecting hole 331 and press the end face of the first channel 110. The first connecting hole 331 and the first gas path 311, and the second gas path 312 and the second connecting hole 332 can be sealed by the second sealing washer 52. The second sealing washer 52 can be embedded in the end face of the first gas path 311 and the second gas path 312 and press the end face of the first connecting hole 331 and the second connecting hole 332. The second sealing washer 52 is formed as an integrated sealing washer matched with the gas path of the gas path plate 31 and the connecting hole of the connecting plate 33, which can increase the sealing stability and improve the sealing effect. The second connecting hole 332 and the second channel 120 can be sealed by the third sealing washer (not specifically shown in the figure). The third sealing washer can be embedded in the end face of the second connecting hole 332 and press the end face of the second channel 120.

[0051] In other embodiments, each sealing washer can be press-fitted between the two matched components in other suitable ways as long as the sealing fit between the two components is achieved to avoid gas leakage.

[0052] Figure 5 shows the exploded structure of the check valve. In combination with Figures 1 to 5, in some embodiments, the air suspension system valve further comprises a check valve 40 arranged in the second channel 120. The check valve 40 can be opened under the gas pressure of the second gas path 312 to guide the second channel 120, and can be closed in the initial state to cut off the second channel 120.

[0053] The check valve 40 is used to prevent the backflow of the gas in the valve to the gas supply system through the air inlet 11 to cause the gas pressure fluctuation, and to ensure the stability of the gas delivered to the valve. The check valve 40 has a one-way opening function. Under the gas pressure of the second gas path 312, the check valve 40 opens the second channel 120 to facilitate the gas flow to the air inlet chamber 12. When there is no suitable gas pressure from the second gas path 312, the check valve 40 closes the second channel 120 to prevent the backflow of the gas.

[0054] In some embodiments, the second channel 120 is provided with a check cavity 44, and the check valve 40 has a tapered portion 41 and a pre-tightened elastic portion 42 fitted in the check cavity 44. In the initial state, the elastic portion 42 pushes the tapered portion 41 to seal against the port of the check cavity 44. Under the gas pressure of the second gas path 312, the tapered portion 41 overcomes the pushing force of the elastic portion 42 and leaves the port of the check cavity 44.

[0055] By the cooperation of the taper portion 41 and the pre-tightened elastic portion 42, the second passage 120 is realized to be conducted under the action of the air pressure of the second air path 312, and the air pressure for conducting the second passage 120 is less than the opening air pressure of the communication space, so as to ensure that the second passage 120 is smoothly conducted in the air inlet state of the valve piece; if the air pressure of the second air path 312 does not reach the predetermined pressure, the taper portion 41 cannot be pushed to overcome the action of the elastic portion 42, so that the taper portion 41 is sealed against the port of the check cavity 44 under the action of the elastic portion 42.

[0056] The elastic portion 42 can be a spring, but is not limited thereto.

[0057] In some embodiments, the sealing assembly 32 comprises a sealing gasket 321 and a pre-tightened elastic piece 322; in the natural state, the elastic piece 322 pushes the sealing gasket 321 to be sealed against the air path plate 31; under the action of the air pressure of the first air path 311, the sealing gasket 321 overcomes the pushing force of the elastic piece 322 and leaves the air path plate 31, so that the communication space is formed between the air path plate 31 and the sealing gasket 321.

[0058] By the cooperation of the sealing gasket 321 and the pre-tightened elastic piece 322, the communication space is realized to be opened under the action of the air pressure of the first air path 311, so that the gas meeting the gas supply pressure requirement is delivered to the air inlet cavity 12; if the air pressure of the first air path 311 does not reach the set pressure, the sealing gasket 321 cannot be pushed to overcome the action of the elastic piece 322, so that the sealing gasket 321 is sealed against the air path plate 31 under the action of the elastic piece 322 to close the communication space.

[0059] In some embodiments, the elastic piece 322 is installed in the pre-tightening cavity 324 of the assembly seat 323, the sealing gasket 321 is embedded in the end face of the air path plate 31 and presses the end face of the elastic piece 322 and the pre-tightening cavity 324, the assembly seat 323 is sealed and assembled with the air path plate 31 and compresses the edge of the sealing gasket 321.

[0060] When the air pressure of the first air path 311 reaches the gas supply pressure requirement, the sealing gasket 321 is pushed open and pushes the elastic piece 322 to open the communication space between the sealing gasket 321 and the air path plate 31, at this time the edge of the sealing gasket 321 is compressed on the air path plate 31 by the assembly seat 323, so that the communication space is opened while avoiding gas leakage, and the gas is closed in the communication space.

[0061] The elastic piece 322 can be a spring, but is not limited thereto.

[0062] Further, in some embodiments, the end of the elastic piece 322 away from the sealing gasket 321 is supported on the bottom of the pre-tightening cavity 324 by an adjusting bolt 326.

[0063] By adjusting the bolt 326, the compression force of the elastic member 322 can be adjusted, and then the air pressure entering the air inlet cavity 12 can be adjusted to adapt to the needs of different air pressures.

[0064] In the above embodiments, the air inlet 11 and the air inlet cavity 12 are structures originally in the valve. Among them, the air inlet 11 is connected to the air supply system, and the air inlet 11 can be provided with a filter core net 111 to filter the gas entering the valve; the air inlet cavity 12 is communicated with the valve cavity of the valve.

[0065] From the above description of each embodiment, the flow process of the gas in the valve for air suspension system is as follows: the air supply system delivers gas to the air inlet 11; the gas flows to the first gas path 311 through the first channel 110 and the first connecting hole 331 after being filtered by the air inlet 11; at this time, if the pushing force of the gas in the first gas path 311 on the sealing gasket 321 is greater than the force of the elastic member 322, the gas pushes away the sealing gasket 321 to enter the second gas path 312, otherwise the first gas path 311 and the second gas path 312 remain separated; then, the gas in the second gas path 312 enters the second channel 120 through the second connecting hole 332, if the pushing force of the gas in the second channel 120 on the tapered portion 41 is greater than the force of the elastic portion 42, the gas pushes away the tapered portion 41 to enter the air inlet cavity 12 through the check cavity 44, otherwise the tapered portion 41 is sealed against the port of the check cavity 44 under the action of the elastic portion 42.

[0066] Through the above process, it is ensured that the pressure delivered to the air inlet cavity 12 meets the air supply pressure requirement, and the gas backflow is prevented.

[0067] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be regarded as limiting the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, some simple deductions or replacements can be made without departing from the concept of the present application, and all of them should be regarded as falling within the protection scope of the present application.

Claims

1. A valve for an air suspension system, characterized in that, include: Separated air inlets and air inlets, the air inlets being connected to the air outlets of the air suspension system valves via the valve chambers of the air suspension system valves; An inflation valve is disposed in the path from the air inlet to the air inlet chamber, the inflation valve comprising: An air passage board is provided with a first air passage and a second air passage, the first air passage being connected to the air inlet and the second air passage being connected to the air inlet chamber; A sealing assembly is assembled with the gas passage plate. The sealing assembly can open the communication space connecting the first gas passage and the second gas passage under the action of the gas pressure of the first gas passage, and close the communication space under natural conditions.

2. The valve for an air suspension system as described in claim 1, characterized in that, The air inlet and the air inlet chamber are disposed in the valve body, and the valve body is provided with a first channel connecting the air inlet and the first air path, and a second channel connecting the second air path and the air inlet chamber.

3. The valve for an air suspension system as described in claim 2, characterized in that, The air passage plate has two opposing sides, wherein the first side is assembled with the valve body and the second side is engaged with the sealing assembly; The first air passage extends from the first surface to the second surface, and the second air passage extends from the second surface to the first surface and extends from the first surface.

4. The valve for an air suspension system as described in claim 3, characterized in that, The first air passage extends in a curved manner on the first surface, and the second air passage extends in a straight manner on the first surface.

5. The valve for an air suspension system as described in claim 3, characterized in that, The inflation valve also includes: A connecting plate is assembled between the valve body and the air circuit plate. The connecting plate is provided with a first connecting hole connecting the first channel and the first air circuit, and a second connecting hole connecting the second air circuit and the second channel.

6. The valve for an air suspension system as described in claim 5, characterized in that, The first channel and the first connecting hole, the first connecting hole and the first air passage, the second air passage and the second connecting hole, and the second connecting hole and the second channel are all sealed together by sealing gaskets.

7. The valve for an air suspension system as described in claim 2, characterized in that, Also includes: A check valve is installed in the second channel. The check valve can open the second channel under the action of the air pressure in the second air path and cut off the second channel in the initial state.

8. The valve for an air suspension system as described in claim 7, characterized in that, The second channel is provided with a check chamber, and the check valve has a conical portion and a pre-tightened elastic portion assembled in the check chamber; In the initial state, the elastic part pushes the cone part to seal against the port of the check cavity; Under the pressure of the second air passage, the cone overcomes the thrust of the elastic part and leaves the port of the check cavity.

9. The valve for an air suspension system as claimed in claim 1, characterized in that, The sealing assembly includes a sealing gasket and a pre-tightened elastic element; In its natural state, the elastic element pushes the sealing gasket to seal against the air passage plate; Under the pressure of the first air passage, the sealing gasket overcomes the thrust of the elastic element and moves away from the air passage plate, forming the communicating space between the air passage plate and the sealing gasket.

10. The valve for an air suspension system as claimed in claim 9, characterized in that, The elastic element is installed in the pre-tightening cavity of the mounting base. The sealing gasket is embedded in the end face of the air circuit board and covers the end face of the elastic element and the pre-tightening cavity. The mounting base is sealed to the air circuit board and presses the edge of the sealing gasket.

11. The valve for an air suspension system as claimed in claim 10, characterized in that, The end of the elastic element away from the sealing gasket is supported at the bottom of the pre-tightening cavity by an adjusting bolt.

12. The valve for an air suspension system as claimed in claim 1, characterized in that, The air inlet is equipped with a filter screen.

Images