| 摘要 |
A suspension device interposed between a vehicle body and a wheel includes a shock absorber, a suspension spring, a tube member accommodating the shock absorber and the suspension spring, a sealing member closing a one-side opening of the tube member and holding a piston rod of the shock absorber, a damping force adjustment portion, which includes a coil generating a magnetic field in a passage and a wiring penetrating the piston rod and the sealing member and conducting the coil, electrically adjusting resistance caused when an operating fluid, which is a magnetic viscous fluid whose viscosity changes by a magnetic field's action, passes through the passage allowing two chambers defined and formed by a piston in a cylinder to communicate with each other in the shock absorber, and a reaction force adjustment portion, which is mounted on the sealing member, for adjusting a reaction force of the suspension spring. |
| 主权项 |
1. A suspension device interposed between a vehicle body and a wheel, comprising:
a shock absorber, in which an operating fluid is sealed therein, including a cylinder, a piston rod going into and out of the cylinder, a piston held by the piston rod and defining two chambers formed in the cylinder where the operating fluid is filled in the two chambers, and a passage formed in the piston and allowing the two chambers to communicate with each other; a suspension spring made of a coil spring adapted to urge the shock absorber in an extension direction; a tube member composed of an outer tube and an inner tube going into and out of the outer tube, the tube member adapted to accommodate the shock absorber and the suspension spring; a sealing member adapted to close a one-side opening of the tube member and to hold the piston rod; a damping force adjustment portion adapted to electrically adjust resistance caused when the operating fluid passes through the passage; and a reaction force adjustment portion adapted to adjust a reaction force of the suspension spring, wherein the operating fluid is a magnetic viscous fluid whose viscosity changes by an action of a magnetic field; the damping force adjustment portion includes a coil mounted on the piston and adapted to generate the magnetic field in the passage, and a wiring adapted to penetrate the piston rod and the sealing member and to conduct electricity to the coil; the reaction force adjustment portion is mounted on the sealing member;
the sealing member is formed annularly and includes a sealing portion screw-connected with the tube member, a guide portion extending from the sealing portion to a tube member side and having an opening on a side portion, and a rod holding portion extending from the guide portion to the tube member side and adapted to hold the piston rod;the reaction force adjustment portion includes an annular adjuster screw-connected with an inner periphery of the sealing portion, a cylindrical wiring guide inserted into an inside of the adjuster, and a support piece inserted into the guide portion and driven in an axial direction by the adjuster;the wiring passes inside the wiring guide;the wiring guide extends to the rod holding portion and is fixed to the rod holding portion;the support piece includes a support portion protruding from the opening of the guide portion to an outer side, the support piece being adapted to support a one-side end portion of the suspension spring by the support portion;the wiring guide includes a cylindrical body formed in a cylindrical shape, and a flange portion extending from the cylindrical body to an outer side;the rod holding portion includes a stopper portion continuing to the guide portion, and a nut portion continuing to a side opposite to a guide portion side of the stopper portion and formed so as to have an inner diameter larger than an inner diameter of the stopper portion; andthe flange portion is sandwiched between the stopper portion and a distal end of the piston rod screw-connected with an inner periphery of the nut portion. |
