PURPOSE: To enhance the characteristic of road-holding, by providing such an arrangement that a suspension bushing for the upper support of a shock-absorber is made expansible and contractible by the charge and discharge of pressure fluid, and therefore, pressure fluid is fed upon detection of running on a rough road to increase a spring constant.
CONSTITUTION: When the top end part of a piston rod 10 in a shock-absorber 8 which is disposed, for absorbing vibration of a suspension spring 23, between a wheel support member and a vehicle body 21, is attached to the vehicle body 21, there is used a suspension bushing 16 which is formed by vulcanizing a rubber resilient member 15 to bond the latter between support plates 13, 14. The resilient member 15 of the suspension bushing 16 is incorporated therein with a plurality of hollow bags 27 connected to a pressure fluid source through a hose 30 and a solenoid valve. When a control circuit detects a variation in the output of a vehicle height sensor or vertical acceleration detecting sensor so that running on a rough load is detected, the solenoid valve is opened to rais the pressure in the bags 27 to increase the spring constant of the suspension spring 16.
YOKOYA YUUJI
HANAI KIYOSHI
OOHASHI KAORU
| JPS58106209U | 1983-07-19 | |||
| JPS5798909U | 1982-06-17 | |||
| JPS5326021A | 1978-03-10 | |||
| JPS57205432U | 1982-12-27 |