SUSPENSION APPARATUS

摘要

A shock absorber of a suspension apparatus includes a pair of chambers, a flow passage connects the chambers such that a working fluid passes through the flow passage as the shock absorber expands and contracts, a damping force generation mechanism applies resistance to the working fluid passing through the flow passage, a bypass passage connects the chambers so as to bypass the flow passage, a variable throttle member that is inserted into the bypass passage to be capable of advancing and retreating in order to modify an opening of the bypass passage, an actuator drives the variable throttle member and includes an acting portion disposed on a back surface side of the variable throttle member, and a power transmission mechanism interposed between the acting portion and the variable throttle member in order to transmit a linear motion of the acting portion to the variable throttle member.

主权项

1. A suspension apparatus interposed between a vehicle body and a vehicle wheel, comprising:
a shock absorber having a cylinder and a piston rod inserted retractably into the cylinder; and a biasing member that biases the shock absorber in an expansion direction, wherein the shock absorber includes: a pair of chambers housing a working fluid; a flow passage that connects the pair of chambers such that the working fluid passes through the flow passage as the shock absorber expands and contracts; a damping force generation mechanism that is configured to apply resistance to the working fluid passing through the flow passage; a bypass passage that connects the pair of chambers so as to bypass the flow passage; a variable throttle member that is inserted into the bypass passage to be capable of advancing and retreating in order to modify an opening of the bypass passage; an actuator that is configured to drive the variable throttle member, and includes a motor, an acting portion disposed on a back surface side of the variable throttle member and provided eccentrically relative to the variable throttle member, and a motion conversion mechanism that is configured to convert a rotary motion of the motor into a linear motion of the acting portion; and a power transmission mechanism interposed between the acting portion and the variable throttle member in order to transmit the linear motion of the acting portion to the variable throttle member.