Seat height control valve

Abstract

The utility model discloses a seat height control valve which comprises a valve body, the valve body comprises an air inlet, an inflation port and an exhaust port, an inflation channel communicated with the air inlet and the inflation port is arranged between the air inlet and the inflation port, and a one-way valve capable of controlling one-way inflation is arranged in the inflation channel. Exhaust channels which are communicated with each other are arranged between the inflation port and the exhaust port, an exhaust opening and closing valve capable of controlling exhaust is arranged in each exhaust channel, and an air inlet opening and closing valve is arranged in the air inlet; the one-way valve for preventing air from flowing back to the air inlet from the inflation inlet is designed on the inflation channel for communicating the air inlet with the inflation inlet, so that inflation is more stable, the valve body inflates and exhausts the seat pneumatic spring more stably in cooperation with an existing air inlet opening and closing valve and an existing exhaust opening and closing valve, and the air inlet opening and closing valve is more stable. The stable seat lifting function is achieved, and the damping function of the pneumatic spring is achieved by triggering the valve body to be inflated and deflated in the vehicle vibration process.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seat lifting control valves, and in particular relates to a seat height control valve. Background Art

[0002] Currently, there are two main types of seat lift control mechanisms in automobiles. One is an electric lift control mechanism, used in passenger car seats, which primarily relies on a motor to drive a gear, with the gear and rack moving relative to each other to achieve seat raising and lowering. The other is a pneumatic control mechanism, used in commercial vehicle seats, which primarily relies on the vehicle's air pressure to control a valve body to inflate and deflate the pneumatic spring under the seat, achieving seat raising and lowering. Existing patent 202122339056.8 describes a pneumatic stroke control valve for vehicle seats. This valve body controls the valve body to inflate and deflate the pneumatic spring, achieving seat raising and lowering functions. It also triggers the valve body to inflate and deflate during vehicle vibrations, achieving the pneumatic spring's shock absorption function. However, this pneumatic stroke control valve lacks a one-way valve in the passage between the air inlet and the charging port, allowing gas from the charging port to flow back into the air inlet. To address this issue, the present utility model proposes a seat height control valve. Utility Model Content

[0003] The purpose of the present utility model is to provide a seat height control valve to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a seat height control valve, comprising a valve body, the valve body comprising an air inlet, an inflation port and an exhaust port, an inflation channel interconnected with each other is provided between the air inlet and the inflation port, a one-way valve that can control one-way inflation is provided in the inflation channel, an exhaust channel interconnected with each other is provided between the inflation port and the exhaust port, an exhaust opening and closing valve that can control exhaust is provided in the exhaust channel, an air inlet opening and closing valve is provided in the air inlet, an air inlet control rod extending to the outside is provided at one end of the air inlet opening and closing valve, and an exhaust control rod extending to the outside is provided at one end of the exhaust opening and closing valve.

[0005] Preferably, the outer end of the intake control rod and the outer end of the exhaust control rod are both arc-shaped rod structures.

[0006] Preferably, the valve body further includes two penetrating fixing holes.

[0007] Preferably, it also includes a fixed bracket, an interlocking buckle, a control pressure rod and a control cam, the fixed bracket is installed on the seat support scissors bracket, the valve body is fastened and installed by two connecting screws that pass through the two fixing holes on the fixed bracket and the valve body in sequence, the control pressure rod is installed on the fixed bracket by swinging the shaft, and the control cam is rotatably connected to the fixed bracket through the interlocking buckle, the cam structures at both ends of the control cam respectively rest on the top ends of the control pressure rod, and the bottom ends of the control pressure rod can be pressed to trigger the intake control rod and the exhaust control rod as the control pressure rod swings.

[0008] Preferably, the control pressure rod is a symmetrical structure, and the bottom end of the control pressure rod is an arc-shaped structure, and the top end of the control pressure rod that contacts the control cam is also an arc-shaped structure.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs a one-way valve on the inflation channel connecting the air inlet and the inflation port, which prevents air from flowing back from the inflation port to the air inlet, making the inflation more stable. In conjunction with the existing air intake opening and closing valve and the exhaust opening and closing valve, the valve body can inflate and exhaust the seat pneumatic spring more stably, realize a stable seat lifting function, and trigger the valve body to inflate and deflate air during vehicle vibration to realize the pneumatic spring shock absorption function. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the side three-dimensional structure of the utility model;

[0012] Figure 3 This is a schematic diagram of the valve body structure of the utility model;

[0013] In the figure: 1. Valve body; 10. Exhaust channel; 11. Air inlet; 12. Inlet opening and closing valve; 13. Inlet control lever; 14. Inflating port; 15. One-way valve; 16. Exhaust control lever; 17. Exhaust port; 18. Exhaust opening and closing valve; 19. Inflating channel; 2. Fixing bracket; 3. Interlocking buckle; 4. Control pressure rod; 5. Control cam; 6. Connecting screw; 7. Shaft. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] See also Figures 1 to 3 , provides a technical solution: a seat height control valve, including a valve body 1, the valve body 1 includes an air inlet 11, an inflation port 14 and an exhaust port 17, an inflation channel 19 is provided between the air inlet 11 and the inflation port 14, and a one-way valve 15 for controlling one-way inflation is provided in the inflation channel 19, so that inflation is more stable, and there will be no problem of air backflow, maintaining a stable and sufficient air pressure in the inflation port 14, an exhaust channel 10 is provided between the inflation port 14 and the exhaust port 17, an exhaust opening and closing valve 18 for controlling exhaust is provided in the exhaust channel 10, an air inlet opening and closing valve 12 is provided in the air inlet 11, an air inlet control rod 13 extending to the outside is provided at one end of the air inlet opening and closing valve 12, and an exhaust control rod 16 extending to the outside is provided at one end of the exhaust opening and closing valve 18. In this embodiment, preferably, the outer end of the intake control rod 13 and the outer end of the exhaust control rod 16 are both arc-shaped rod structures, so as to facilitate the force to be applied and trigger the corresponding valves. In this embodiment, preferably, the valve body 1 also includes two through-holes for convenient and stable installation of the valve body 1. In this embodiment, preferably, it also includes a fixing bracket 2, an interlocking buckle 3, a control pressure rod 4 and a control cam 5. The fixing bracket 2 is mounted on the seat support scissor bracket. The valve body 1 is fastened and installed by two connecting screws 6 that pass through the two fixing holes on the fixing bracket 2 and the valve body 1 in sequence. The control pressure rod 4 is swingably mounted on the fixing bracket 2 via a shaft 7. The control cam 5 is rotationally connected to the fixing bracket 2 via the interlocking buckle 3. The cam structures at both ends of the control cam 5 respectively abut against the top ends of the control pressure rod 4. The bottom ends of the control pressure rod 4 can be pressed to trigger the intake control rod 13 and the exhaust control rod 16 as the control pressure rod 4 swings. In this embodiment, preferably, the control pressure rod 4 is a symmetrical structure, and the bottom end of the control pressure rod 4 is an arc structure, and the part where the top end of the control pressure rod 4 contacts the control cam 5 is also an arc structure, in order to ensure that the swing stroke of the cam 5 pressing down the control pressure rod 4 can just allow the control pressure rod 4 to trigger the intake control rod 13 and the exhaust control rod 16.

[0016] Although embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seat height control valve, comprising a valve body (1), characterized in that: The valve body (1) comprises an air inlet (11), an air charging port (14) and an air exhaust port (17); an air charging channel (19) is provided between the air inlet (11) and the air charging port (14); a one-way valve (15) capable of controlling one-way air charging is provided in the air charging channel (19); an air exhaust channel (10) is provided between the air charging port (14) and the air exhaust port (17); an air exhaust opening and closing valve (18) capable of controlling air exhaust is provided in the air exhaust channel (10); an air inlet opening and closing valve (12) is provided in the air inlet (11); an air inlet control rod (13) extending to the outside is provided at one end of the air inlet opening and closing valve (12); and an air exhaust control rod (16) extending to the outside is provided at one end of the air exhaust opening and closing valve (18).

2. A seat height control valve according to claim 1, characterized in that: The outer end of the air intake control rod (13) and the outer end of the air exhaust control rod (16) are both arc-shaped rod structures.

3. A seat height control valve according to claim 2, characterized in that: The valve body (1) also includes two penetrating fixing holes.

4. A seat height control valve according to claim 3, characterized in that: The invention also includes a fixed bracket (2), an interlocking buckle (3), a control pressure rod (4) and a control cam (5); the fixed bracket (2) is mounted on the seat support scissor bracket; the valve body (1) is fastened and mounted by two connecting screws (6) that sequentially penetrate the fixed bracket (2) and two fixing holes on the valve body (1); the control pressure rod (4) is swingably mounted on the fixed bracket (2) through a shaft (7); the control cam (5) is rotationally connected to the fixed bracket (2) through the interlocking buckle (3); the cam structures at both ends of the control cam (5) respectively abut against the top ends of the control pressure rod (4); and the bottom ends of the control pressure rod (4) can be pressed to trigger the intake control rod (13) and the exhaust control rod (16) as the control pressure rod (4) swings.

5. The seat height control valve according to claim 4, characterized in that: The control lever (4) is a symmetrical structure, and the bottom end of the control lever (4) is an arc-shaped structure, and the top end of the control lever (4) that contacts the control cam (5) is also an arc-shaped structure.

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