发明名称 |
Shock absorber and suspension apparatus |
摘要 |
A shock absorber includes: at least one cylinder apparatus including a cylinder sealingly containing operating fluid, a piston slidably fittedly inserted in the cylinder to divide an interior of the cylinder into two chambers, and a piston rod coupled to the piston and extending to an outside of the cylinder; and at least one damping force generation mechanism connected to the cylinder apparatus, and capable of generating a damping force to be applied to a flow of the operating fluid caused by a movement of the piston and adjusting the damping force from the outside. The damping force generation mechanism includes a damping valve for generating the damping force, a pilot chamber for applying a pilot pressure by the operating fluid to the damping valve, and a pump for at least supplying or discharging the operating fluid to or from the pilot chamber. |
申请公布号 |
US8776961(B2) |
申请公布日期 |
2014.07.15 |
申请号 |
US201213479873 |
申请日期 |
2012.05.24 |
申请人 |
Hitachi Automotive Systems, Ltd. |
发明人 |
Mori Shunsuke;Nakamura Kenichi |
分类号 |
F16F9/34 |
主分类号 |
F16F9/34 |
代理机构 |
Wenderoth, Lind & Ponack, LLP |
代理人 |
Wenderoth, Lind & Ponack, LLP |
主权项 |
1. A shock absorber comprising:
at least one cylinder apparatus comprising a cylinder sealingly containing operating fluid, a piston slidably fittedly inserted in the cylinder to divide an interior of the cylinder into two chambers, and a piston rod coupled to the piston and extending to an outside of the cylinder; and at least one damping force generation mechanism connected to the cylinder apparatus, the damping force generation mechanism being capable of generating a damping force to be applied to a flow of the operating fluid caused by a movement of the piston and adjusting the damping force by control signals supplied from outside of the shock absorber, the damping force generation mechanism comprising a damping valve for generating the damping force, a pilot chamber for applying a pilot pressure by the operating fluid to the damping valve, and a pump for at least supplying or discharging the operating fluid to or from the pilot chamber, wherein the operating fluid is liquid, the cylinder includes a reservoir sealingly containing the liquid and gas for compensating for a volume of the cylinder, and the pump supplies and discharges the liquid between the reservoir and the cylinder. |
地址 |
Ibaraki JP |