JPS6311213U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the basic configuration of the vehicle height control device of this invention, Fig. 2 is a block diagram of the first embodiment of this invention, and Fig. 3 is a flowchart showing the procedure of processing executed by a microcomputer. It's a chat. 2a-2d...suspension device, 5a-5d
...Air chamber, 6a to 6d...Elastic body, 8...Reservoir tank, 9...Compressor, 12...Air supply valve, 1
3a, 13b...Front wheel side supply/exhaust valve, 14...Rear wheel side supply/exhaust valve, 15...Communication valve, 16...Exhaust valve, 23a-23d...Vehicle height sensor, 23, 26...
Relay, 27...Motor, 29...Controller, 3
0...Microcomputer, 31-36...Drive circuit, 39...Interface circuit, 40...Arithmetic processing unit, 41...Storage device.

Claims (1)

[Scope of claim for utility model registration] (1) Located at a total of four wheel positions on the front, rear, left and right sides of the vehicle,
A suspension device including a fluid chamber capable of supplying and discharging fluid to adjust vehicle height; A fluid supply source capable of supplying fluid to the fluid chamber; Vehicle height detection means for detecting vehicle height at each wheel position. ; vehicle height determination means for comparing and determining the detected vehicle height value with a preset target vehicle height range or target vehicle height value; and according to the determination result of the vehicle height determination means, the detected vehicle height value is determined as The vehicle height of the suspension device is adjusted by supplying fluid from the fluid supply source to the fluid chamber or discharging fluid from the fluid chamber so as to fall within a vehicle height range or match the target vehicle height value. Adjustment can be made so that the four wheels can be adjusted independently, or one side of the front wheel side and the rear wheel side can be left and right independently, and the other side can be left and right independent, and the left and right fluid chambers can be switched between communicating and blocking via a communicating means. A vehicle height control device comprising vehicle height adjustment means for detecting abnormal vehicle height reduction detection means for detecting an abnormal decrease in vehicle height at any one of the four wheel positions; When the drop detecting means detects that the vehicle height at one wheel position has abnormally lowered, the vehicle height adjusting means performs independent left and right vehicle height adjustment of the wheel position on the side where the vehicle height is not abnormally lowered. or stop the left and right non-independent vehicle height adjustment of the wheel position on the side where the vehicle height is not abnormally lowered, and cut off the communication between the left and right fluid chambers via the communication means, and prevent the vehicle height from abnormally lowering. A vehicle height control device characterized in that the vehicle height is lowered at a wheel position on the opposite side in the left-right direction from the detected wheel position. (2) The fluid chambers can be adjusted independently for the four wheels,
When the abnormal vehicle height reduction detection means detects an abnormal reduction in vehicle height at one wheel position among the four wheel positions, the vehicle height adjustment means adjusts the vehicle height at the wheel position on the side where the vehicle height is not abnormally reduced. 2. The vehicle height control device according to claim 1, which is configured to stop the vehicle height and lower the vehicle height of a wheel position opposite in the left-right direction from the wheel position where an abnormal decrease in vehicle height has been detected. (3) The fluid chamber adjusts the left and right wheels of either the front wheel side or the rear wheel side independently, adjusts the other left and right wheels independently, and communicates the left and right fluid chambers with each other via a communication means. - When the abnormal vehicle height reduction detection means detects an abnormal reduction in the vehicle height of one of the left and right wheels on the independent side, the vehicle height adjustment means detects the abnormal reduction in the vehicle height of the wheel on the side where the vehicle height is not abnormally reduced. Stop the non-independent vehicle height adjustment of the left and right positions, cut off the communication between the left and right fluid chambers via the communication means, and adjust the wheel position on the left and right side opposite to the independent side wheel position where the abnormal decrease in vehicle height was detected. 1. A vehicle height control device according to claim 1, which lowers the vehicle height of a vehicle. (4) The fluid chamber independently adjusts the left and right wheels of either the front wheel side or the rear wheel side, adjusts the other left and right wheels independently, and communicates the left and right fluid chambers with each other via a communication means.・When the abnormal vehicle height reduction detection means detects an abnormal reduction in the vehicle height of one of the left and right wheels on the non-independent side, the vehicle height adjustment means detects an abnormal reduction in the vehicle height of one of the left and right wheels on the non-independent side. In addition to stopping independent vehicle height adjustment for the left and right wheel positions, the left and right fluid chambers of the non-independent wheel position where an abnormal decrease in vehicle height has been detected are communicated via a communication means to lower the vehicle height of both the left and right wheel positions. A vehicle height control device according to claim 1 of the utility model registration claim.