JPH01145703U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a pneumatic circuit diagram of a vehicle height adjustment device showing a typical embodiment of the present invention, Figure 2 is a layout diagram of an air intake valve applied to the same device, and Figure 3 is a layout diagram of the same exhaust valve. It is. Explanation of the main parts of the diagram, 1...Air compressor,
2...Air tank, 3...Air spring, 4...Air supply valve, 5
...exhaust valve, 6...one-way valve, 7...throttle.

Claims (1)

[Claims for Utility Model Registration] 1. An air spring, an air compressor that receives and compresses external air or air in the air spring when the vehicle height is lowered, and an air compressor that stores compressed air from the air compressor when the vehicle height is raised. A vehicle height adjustment device comprising an air tank that supplies internal pressure air to the air spring, a valve element that opens and closes an air flow path, a spring that presses the valve element toward the air spring and closes the flow path;
interposing an air supply valve between the air tank and the air spring, the air supply valve having a solenoid coil that attracts the valve body against the spring force when energized to open the flow path;
Similarly, a valve body opens and closes the air passage, a spring presses the valve body toward the air compressor and closes the passage, and when energized, the valve body is attracted against the spring force to open the passage. A vehicle height adjustment device characterized in that an exhaust valve having a solenoid coil is interposed between the air spring and the air compressor. 2. The vehicle height adjustment device according to claim 1, further comprising a throttle and a one-way valve that only allows flow to the air spring, interposed in parallel in a flow path communicating with the air spring and the air supply valve.