| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic declutching device capable of reducing abrasion in sliding a piston member, sweeping off fine dust, and preventing the intrusion of foreign matters. SOLUTION: An annular piston member 1 provided with a seal member 22 on its end part is fitted in an annular cylinder space 4 formed by an outer cylinder member 3 and an inner cylinder member 2. One of inner and outer peripheral faces of the piston member 1, and one of an inner peripheral face of the outer cylinder 3 and an outer peripheral face of the inner cylinder 2 are respectively provided with annular recessed grooves, and soft wipers 24, 25 impregnated with lubricant are fitted in the annular grooves. |
