초록 ▼

In a position control system for the body of a vehicle having a buffer supportingly connected between the vehicle body and the rear wheel(s), a deceleration sensor senses decelerating conditions of the vehicle and generates an output signal indicative of a sensed decelerating condition of the vehicl

In a position control system for the body of a vehicle having a buffer supportingly connected between the vehicle body and the rear wheel(s), a deceleration sensor senses decelerating conditions of the vehicle and generates an output signal indicative of a sensed decelerating condition of the vehicle, and a damping force adjuster is responsive to the above output signal for adjusting the damping force produced by the buffer during expansion stroke of its damper so as to retard a motion of the rear wheel(s) in a direction away from the vehicle body.

대표청구항 ▼

A vehicle body position control system for use in a vehicle including a body and at least one rear wheel, said position control system comprising: a buffer having (i) an elastic support elastically supporting said rear wheel on said vehicle body and (ii) a damper for generating a damping force for d

A vehicle body position control system for use in a vehicle including a body and at least one rear wheel, said position control system comprising: a buffer having (i) an elastic support elastically supporting said rear wheel on said vehicle body and (ii) a damper for generating a damping force for damping elastic vibrations of said elastic support, said elastic support comprising a spring elastically contractible and expansible in response to vibrations transmitted from said rear wheel, said damper comprising: a cylinder engaging one end of said spring and defining therein a cylinder chamber filled with operating fluid, a piston slidably received within said cylinder chamber and separating said cylinder chamber into first and second cylinder chambers, communication passage means formed in said piston and communicating said first and second cylinder chambers with each other, and means responsive to elastic contraction and expansion of said spring for imparting flow resistance to said operating fluid flowing in said communication passage means to thereby generate said damping force; a deceleration sensor for sensing decelerating conditions of said vehicle and generating an output signal indicative of a sensed decelerating condition of said vehicle; a damping force adjuster responsive to said output signal for adjusting said damping force of said damper of said buffer, said damping force adjuster being adapted to adjust said damping force so as to retard a motion of said rear wheel in a direction away from said vehicle body at a larger rate when said output signal is generated than when said output signal is not generated; a tank having an interior filled with operating fluid; a second damping force adjuster having second communication passage means communicating the interior of said tank with one of said first and second cylinder chambers which has operating fluid pressure therein increased when said spring is contracted; valve means for closing and opening said second communication passage means; and means responsive to said output signal from said deceleration sensor for actuating said valve means to open said second communication passage means at a value of operating fluid pressure within said one of said first and second cylinder chambers lower than a value of said operating fluid pressure at which said valve means is opened when said output signal from said deceleration sensor is not generated, thereby reducing the damping force of said damper of said buffer during contraction of said spring at deceleration of said vehicle.