Variable spring constant damper

Abstract

Abstract PURPOSE:To improve riding comfortableness and running stability of a vehicle by properly adjusting the spring constant of the cushion springs draggingly stretched over on the outer periphery of a damper cylinder for the vehicle. CONSTITUTION:Two cushion springs 11, 12 are draggingly stretched over between a spring seat 8 connected to a bracket 5 supported on the top end of a piston rod 2 and a spring seat 9 connected to the lower outer periphery of a cylinder 1 through a separator 10 vertically freely movable and placed in the midway of the springs 11, 12. The separator 10 is supported by a piston rod 14 extended upward over an hydraulic cylinder unit 13 securely provided on the lower periphery of the cylinder 1. An oil chamber S1 is communicated to an oil chamber S2 of an accumulator 20 separately provided from the damper main body, through a communication passage 16. By a spool 30 serving as a closing valve provided on the way of the communication passage 16, the communication of the oil chambers S1 and S2 is interrupted to allow adjustment of the spring constant of the cushion springs 11, 12.

Inventors

• 👤 Toshiyuki Takakusaki
• 👤 高草木　利之
• 👤 Tadashi Emori
• 👤 正 江森

Bibliographic Details