CN216519749U

CN216519749U - Pneumatic air release valve for vehicle seat

Info

Publication number: CN216519749U
Application number: CN202122958026.5U
Authority: CN
Inventors: 刘泽升; 姜立洲; 田永巍; 宫云飞; 禚娴娴; 杜秋; 陈文义; 胡兵兵; 王海涛; 邢运强; 李健; 谢荣春; 王鹏燕
Original assignee: Changchun Chinaust Automobile Parts Co ltd
Current assignee: Changchun Chinaust Automobile Parts Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-13
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a pneumatic air release valve for a vehicle seat, which comprises a valve body and a switch, wherein the valve body is provided with a valve seat; the valve body is provided with an air guide channel, and an air inlet hole, an inflation hole and an exhaust hole which are mutually communicated through the air guide channel, wherein the air inlet hole is used for connecting a stroke control valve, and the inflation hole is used for connecting a seat pneumatic spring; the air channel is provided with an air channel switching mechanism which is used for switching the communication state of the inflation hole, the air inlet hole and the exhaust hole; the gas circuit switching mechanism is connected with the switch. The utility model provides a pneumatic deflation valve for a vehicle seat, which is arranged between a seat pneumatic travel control valve and a seat pneumatic spring so as to optimize the functional deficiency of the existing seat lifting system; the air inlet hole is used for being connected with the stroke control valve, and the inflation hole is used for being connected with a seat pneumatic spring.

Description

Pneumatic air release valve for vehicle seat

Technical Field

The utility model particularly relates to a pneumatic deflation valve for a vehicle seat.

Background

The seat lifting function and the seat shock-absorbing function are newly added to the existing commercial vehicle seat, the requirements of the comfort and the driving safety of a driver are met, the commercial vehicle is provided with a whole vehicle air source and an air storage tank, the lifting and the shock-absorbing functions of the seat are mainly controlled pneumatically, the lifting control switch needs to be pulled when the seat is lifted by the driver, the switch is pulled to different gears every time, the seat can correspondingly lift to different heights, however, when the driver gets on or off the vehicle, the seat is in a higher position, the getting on or off the vehicle is inconvenient, at this time, if the height of the seat needs to be reduced, the lifting switch needs to be pulled to the lowest gear, a long time can be consumed, and the seat also needs to be adjusted by one gear and one gear for continuous driving if the seat is adjusted to the original gear again, and time and labor are consumed.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a pneumatic purge valve for a vehicle seat.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a pneumatic deflation valve for a vehicle seat comprises a valve body and a switch; the valve body is provided with an air guide channel, and an air inlet hole, an inflation hole and an exhaust hole which are mutually communicated through the air guide channel, wherein the air inlet hole is used for connecting a stroke control valve, and the inflation hole is used for connecting a seat pneumatic spring; the air channel is provided with an air channel switching mechanism which is used for switching the communication state of the inflation hole, the air inlet hole and the exhaust hole; the gas circuit switching mechanism is connected with the switch.

As a preferred embodiment of the pneumatic deflation valve for vehicle seats provided by the present invention, the air inlet, the inflation hole and the exhaust hole are arranged on the same side of the valve body, and the inflation hole is located between the air inlet and the exhaust hole.

As a preferred embodiment of the pneumatic deflation valve for vehicle seats provided by the present invention, the air path switching mechanism comprises a push rod, an exhaust gasket and an air inlet gasket; the ejector rod is provided with a hollow channel, a through hole communicated with the hollow channel is formed in the side wall of the ejector rod, and the ejector rod is connected with the switch so as to drive the ejector rod to move in the air guide channel according to the state of the switch; the exhaust sealing gasket is sleeved on the ejector rod and is located in a communication path between the exhaust hole and the inflation hole, and the air inlet sealing gasket is located below the ejector rod and is located in a communication path between the air inlet hole and the inflation hole.

As a preferred embodiment of the pneumatic deflation valve for vehicle seats provided by the present invention, the ejector pin is limited in one end of the air guide channel by a fixed cover.

As a preferred embodiment of the pneumatic deflation valve for vehicle seats provided by the utility model, a sealing ring is sleeved on the upper part of the ejector rod.

As a preferred embodiment of the pneumatic purge valve for a vehicle seat provided by the present invention, a sealing ring is disposed on the exhaust gasket.

As a preferred embodiment of the pneumatic purge valve for a vehicle seat provided by the present invention, the ejector rod sleeve is provided with a first return spring.

As a preferred embodiment of the pneumatic purge valve for a vehicle seat provided in the present invention, a second return spring is connected to the intake gasket.

As a preferred embodiment of the pneumatic deflation valve for vehicle seats provided by the present invention, a sealing plug is disposed at the other end of the air guide channel, and the second return spring is disposed between the air inlet gasket and the sealing plug.

As a preferred embodiment of the pneumatic purge valve for a vehicle seat according to the present invention, the switch is rotatably disposed on the valve body, and one side of the switch selectively acts on the air passage switching mechanism.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a pneumatic deflation valve for a vehicle seat, which is arranged between a seat pneumatic travel control valve and a seat pneumatic spring so as to optimize the functional deficiency of the existing seat lifting system; the air inlet hole is used for being connected with the stroke control valve, and the inflation hole is used for being connected with a seat pneumatic spring. When a driver gets on or off the vehicle and needs to lower the seat to the lowest height, the driver only needs to press the switch on the pneumatic air release valve, at the moment, the air inflation hole and the air inlet hole are in a non-communicated state, namely, an air path channel between the stroke control valve and the seat pneumatic spring is closed, the whole vehicle air source does not inflate into the pneumatic spring any more, the air inflation hole is communicated with the air exhaust hole, namely, the pneumatic spring and a channel communicated with the atmosphere are opened, the compressed air in the pneumatic spring is instantly exhausted to the atmosphere, and the seat is lowered to the lowest point. When a driver wants to restore the original height gear, the driver reversely presses a switch of the pneumatic air release valve, at the moment, the inflation hole and the exhaust hole are in a non-communicated state, namely the pneumatic spring is closed with a channel communicated with the atmosphere, the inflation hole is communicated with the air inlet hole, namely an air channel between the stroke control valve and the seat pneumatic spring is opened, the whole vehicle air source charges compressed air into the pneumatic spring, and the seat is directly lifted to the original height. The device has simple structure and simple and convenient operation, and greatly simplifies the steps and time of the operation of the driver.

The structure of the utility model has the advantages that: 1. the function of rapid lifting of the seat is realized; 2. compared with other types of quick air release valves in the existing market, the air release valve has the advantages of simple structure, few parts, light weight and high use reliability; 3. the product sealing structure design is superior to other products, the sealing performance is good, and the quality is stable; 4. the operation is simple and convenient, and the operation steps and time are saved.

Drawings

In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.

FIG. 1 is a schematic view of a pneumatic purge valve for a vehicle seat according to the present invention;

FIG. 2 is an exploded view of the pneumatic purge valve for a vehicle seat of the present invention;

FIG. 3 is a side view of the pneumatic purge valve for a vehicle seat of the present invention;

FIG. 4 is a front elevational view of the pneumatic purge valve for a vehicle seat of the present invention;

FIG. 5 is a cross-sectional perspective view taken at A-A of FIG. 4;

FIG. 6 is a schematic view of the center post of the pneumatic release valve for a vehicle seat according to the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

Example 1

Referring to fig. 1 to 3, the present embodiment provides a pneumatic deflation valve for a vehicle seat, which includes a valve body 1 and a switch 2. Specifically, an air guide channel 11 is arranged in the valve body 1, an air inlet 12, an inflation hole 13 and an exhaust hole 14 are further arranged on the valve body 1, the air inlet 12, the inflation hole 13 and the exhaust hole 14 are communicated with each other through the air guide channel 11, wherein the air inlet 12 is used for connecting a stroke control valve, the inflation hole 13 is used for connecting a seat pneumatic spring, and the exhaust hole 14 is used for connecting a silencer to communicate with the atmosphere or directly communicate with the atmosphere; the air guide channel 11 is further provided with an air path switching mechanism 3, the air path switching mechanism 3 is used for switching the communication state of the inflation hole 13 and the air inlet hole 12 and the air outlet hole 14, and it can be understood that the air path switching mechanism 3 is used for conducting the air inlet channels of the inflation hole 13 and the air inlet hole 12 and also conducting the air outlet channels of the inflation hole 13 and the air outlet hole 14, but the air path switching mechanism 3 is only used for conducting one of the channels, namely, either conducting the air inlet channel and closing the air outlet channel or conducting the air outlet channel and closing the air guide channel 11. Further, the method comprises the following steps of; the gas circuit switching mechanism 3 is connected with the switch 2, and by the design, the gas circuit switching mechanism 3 is directly controlled by the switch 2, the primary switch 2 is pressed, and if the exhaust channel is switched on, and the primary switch 2 is pressed again, the air inlet channel is switched on.

In order to further simplify the structure, as shown in fig. 3, the air inlet 12, the air charging hole 13 and the air discharging hole 14 are arranged on the same side of the valve body 1, and the air charging hole 13 is arranged between the air inlet 12 and the air discharging hole 14, so that the design is convenient for connecting the stroke control valve, the seat pneumatic spring and the silencer through nylon pipes.

The air path switching mechanism 3 comprises a mandril 31, an exhaust gasket 32 and an air inlet gasket 33 which are arranged in the air guide channel 11; as shown in fig. 6, the top bar 31 has a hollow channel 311 for guiding air and a through hole 312 communicating with the hollow channel 311 is opened on the sidewall, and the top bar 31 is connected with the switch 2 to drive the top bar 31 to move in the air guiding channel 11 according to the state of the switch 2; the exhaust gasket 32 is sleeved on the ejector rod 31 and is located in a communication path (namely, an exhaust channel) between the exhaust hole 14 and the inflation hole 13, and the intake gasket 33 is located below the ejector rod 31 and is located in a communication path (namely, an intake channel) between the intake hole 12 and the inflation hole 13. In the initial state, corresponding to the condition that the switch 2 does not act on the ejector rod 31, the air inlet sealing gasket 33 seals and blocks the air inlet channel, and the air outlet channel is in a conducting state (the compressed air with the air outlet path being the air charging hole 13 enters the hollow channel 311 of the ejector rod 31, is discharged out of the hollow channel 311 from the through hole 312, and finally enters the air outlet hole 14), and the seat descends to the lowest point. After the switch 2 is pressed, the action is performed on the ejector rod 31, at the moment, the ejector rod 31 moves along the air guide channel 11 to jack the air inlet sealing gasket 33 so as to conduct the air inlet channel, and the air outlet channel is blocked by the air outlet sealing gasket 32, the lower end of the ejector rod 31 is abutted to the air inlet sealing gasket 33, the air inlet sealing gasket 33 blocks the air inlet bottom end of the hollow channel 311, meanwhile, the air outlet sealing gasket 32 blocks the air outlet channel, compressed air entering from the air inlet hole 12 passes through the air inlet sealing gasket 33 which is jacked open, and then enters the air charging hole 13 along the air guide channel 11, and at the moment, the seat air charging is lifted to the highest point.

The pneumatic air release valve for the vehicle seat is arranged between a seat pneumatic stroke control valve and a seat pneumatic spring so as to optimize the functional deficiency of the existing seat lifting system; the air inlet hole 12 is used for connecting a stroke control valve, and the inflation hole 13 is used for connecting a seat pneumatic spring. When a driver gets on or off the vehicle and needs to lower the seat to the lowest height, the driver only needs to press the switch 2 on the pneumatic air release valve, at the moment, the air charging hole 13 and the air inlet hole 12 are in a non-communicated state, namely, an air path channel between the stroke control valve and the seat pneumatic spring is closed, the whole vehicle air source does not charge air into the pneumatic spring any more, the air charging hole 13 is communicated with the air exhaust hole 14, namely, the pneumatic spring and a channel communicated with the atmosphere are opened, compressed air in the pneumatic spring is instantly exhausted to the atmosphere, and the seat is lowered to the lowest point. When a driver wants to restore the original height gear, the driver presses the switch 2 of the pneumatic air release valve in the reverse direction, at the moment, the inflation hole 13 and the exhaust hole 14 are in a non-communication state, namely, the pneumatic spring is closed with a channel communicated with the atmosphere, the inflation hole 13 is communicated with the air inlet hole 12, namely, an air channel between the stroke control valve and the seat pneumatic spring is opened, the whole vehicle air source fills compressed air into the pneumatic spring, and the seat is directly lifted to the original height gear. The device has simple structure and simple and convenient operation, and greatly simplifies the steps and time of the operation of the driver.

Adopt the advantage of above-mentioned structure to lie in: 1. the function of rapid lifting of the seat is realized; 2. compared with other types of quick air release valves in the existing market, the air release valve has the advantages of simple structure, few parts, light weight and high use reliability; 3. the product sealing structure design is superior to other products, the sealing performance is good, and the quality is stable; 4. the operation is simple and convenient, and the operation steps and time are saved.

Example 2

As an optimized solution of embodiment 1, please refer to fig. 2 and 5, the push rod 31 is limited in one end of the air guide channel 11 by a fixing cover 34, and a sealing ring 35 is sleeved on the upper portion of the push rod 31, that is, the sliding sealing performance of the push rod 31 is further improved by the sealing ring 35.

The ejector rod 31 is sleeved with a first return spring 36, one end of the first return spring 36 is abutted to the upper part of the ejector rod 31, and the other end of the first return spring 36 is abutted to the exhaust sealing gasket 32. The vent gasket 32 is preferably a V-shaped gasket. In order to further improve the sealing effect, a sealing retainer 37 is arranged on the exhaust gasket 32. When the ejector rod 31 is stressed on the switch 2, the ejector rod 31 moves downwards to extrude the first return spring 36, the sealing retainer ring 37 extrudes the exhaust sealing gasket 32 to further improve the sealing effect of the exhaust sealing gasket 32, and air leakage is avoided during air intake.

Example 3

As an optimization of embodiment 1 or 2, referring to fig. 2 and 5, a second return spring 38 is connected to the intake gasket 33, so that when the switch 2 does not act on the plunger 31, the second return spring 38 returns the intake gasket 33 to block the intake passage.

In order to facilitate the assembly of the air inlet gasket 33, a sealing plug 39 is disposed at the other end of the air guide channel 11, and the second return spring 38 is disposed between the air inlet gasket 33 and the sealing plug 39. Therefore, when the air inlet gasket 33 is to be disassembled and assembled, the air inlet gasket 33 can be replaced by disassembling and assembling the sealing plug 39.

Further, a step 111 is arranged in the air guide channel 11, the step 111 is located between the air inlet 12 and the air charging hole 13, and the air inlet sealing gasket 33 abuts against the step 111 through the action of the second return spring 38 and is also used for limiting the air inlet sealing gasket 33.

Example 4

Further optimizing the pneumatic deflation valve of the present invention, as shown in fig. 5, the switch 2 is rotatably disposed on the mounting plate 15 of the valve body 1, and the mounting plate 1 is also used for mounting and fixing the pneumatic deflation valve. One side of the switch 2 selectively acts on the air passage switching mechanism 3. In this way, when the switch 2 is pushed toward one side (e.g., arrow end), the switch 2 is in an exhaust state without acting on the rod 31, and when the switch 2 is pushed toward the other side, the switch 2 is in an inflation state by acting on the rod 31 through the rib 21.

The working principle of the pneumatic air release valve provided by the utility model is as follows:

when the seat is operated to descend to the lowest point, the switch 2 needs to be pressed, the end with the arrow is pressed, the ejector rod 31 is in a return state, the bottom end of the ejector rod 31 is separated from the air inlet sealing gasket 33, the air inlet sealing gasket 33 is attached to the sealing surface of the step 111 under the pressure of the second return spring 38 and is in a sealing state, at the moment, the air inlet hole 12 and the air charging hole 13 are in a non-communication state, and compressed air entering from the stroke control valve cannot reach the pneumatic spring. The bottom end of the ejector rod 31 is in a non-contact state with the air inlet sealing gasket 33, the hollow channel 311 of the ejector rod 31 is opened, the air charging hole 13 is communicated with the air discharging hole 14 through the hollow channel 311 through the through hole 312, the air charging hole 13 is connected with the pneumatic spring, compressed air in the pneumatic spring is discharged to the atmosphere through the air discharging hole 14, and the pneumatic spring is reduced in height after being decompressed;

when the seat is required to be operated to return to the original height, the switch 2 needs to be pressed reversely to lift the end with the arrow, the other end of the switch 2 is pressed, the internal reinforcing rib of the switch 2 is pressed down to the ejector rod 31, the ejector rod 31 is in a pressing-down state, the ejector rod 31 presses down the air inlet sealing gasket 33, the air inlet sealing gasket 33 is separated from the sealing surface of the step 111, the air charging hole 13 is communicated with the air inlet hole 12, the air inlet hole 12 is connected with the stroke control valve, and compressed air entering from the stroke control valve is charged into the pneumatic spring through the air charging hole 13 through the internal channel. The bottom end of the ejector rod 31 is in contact with a sealing surface of the air inlet sealing gasket 33 and is pressed to form sealing, the outer wall of the ejector rod 31 is sealed with the air outlet sealing gasket 32, at the moment, the air charging hole 13 and the air discharging hole 14 are in a non-communicated state, compressed air in the pneumatic spring cannot be discharged into the atmosphere, positive pressure can be formed inside the pneumatic spring, the pneumatic spring is increased in lifting position through the pressure of the charged compressed air, and the whole position of the seat is lifted to the original height.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the utility model and do not limit the scope of the utility model. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims

1. A pneumatic deflation valve for a vehicle seat is characterized by comprising a valve body and a switch; the valve body is provided with an air guide channel, and an air inlet hole, an inflation hole and an exhaust hole which are mutually communicated through the air guide channel, wherein the air inlet hole is used for connecting a stroke control valve, and the inflation hole is used for connecting a seat pneumatic spring; the air channel is provided with an air channel switching mechanism which is used for switching the communication state of the inflation hole, the air inlet hole and the exhaust hole; the gas circuit switching mechanism is connected with the switch.

2. The pneumatic purge valve for a vehicle seat according to claim 1, wherein the air intake hole, the air inflation hole and the air exhaust hole are provided at the same side of the valve body, and the air inflation hole is located between the air intake hole and the air exhaust hole.

3. The pneumatic purge valve for a vehicle seat according to claim 1, wherein the air path switching mechanism comprises a push rod, an exhaust gasket, and an intake gasket; the ejector rod is provided with a hollow channel, a through hole communicated with the hollow channel is formed in the side wall of the ejector rod, and the ejector rod is connected with the switch so as to drive the ejector rod to move in the air guide channel according to the state of the switch; the exhaust sealing gasket is sleeved on the ejector rod and is located in a communication path between the exhaust hole and the inflation hole, and the air inlet sealing gasket is located below the ejector rod and is located in a communication path between the air inlet hole and the inflation hole.

4. A pneumatic bleed valve for vehicle seats according to claim 3, characterised in that the carrier rod is retained in one end of the air guide channel by a retaining cap.

5. A pneumatic purge valve for a vehicle seat according to claim 3, wherein a packing is fitted over the upper portion of the carrier rod.

6. A pneumatic purge valve for a vehicle seat according to claim 3, wherein the exhaust gasket is provided with a sealing collar.

7. A pneumatic purge valve for a vehicle seat according to claim 3, wherein the ejector pin is fitted with a first return spring.

8. A pneumatic purge valve for a vehicle seat according to claim 3, wherein a second return spring is connected to the inlet gasket.

9. A pneumatic bleed valve for vehicle seats as claimed in claim 8, wherein the other end of the air guide passage is provided with a sealing plug, and the second return spring is provided between the intake gasket and the sealing plug.

10. The pneumatic purge valve for a vehicle seat according to claim 1, wherein the switch is rotatably provided on the valve body, and one side of the switch selectively acts on the air passage switching mechanism.