| 摘要 |
PROBLEM TO BE SOLVED: To smooth motions of a piston 7 so that a radial play is controlled during expanding and contracting motions of a coil spring 9 and buckling of the coil spring 9 is prevented in a hydraulic clutch blocking device 4. SOLUTION: The hydraulic clutch blocking device 4 comprises inner and outer cylinders 5 and 6 respectively, a piston 7 being housed in a cylinder space 11, a release bearing 8 being mounted on one end of the piston 7 and being brought into contact with a clutch spring 3, and a coil spring 9 pushing the release bearing 8 to the clutch spring 3. A coil spring guide 6b with a large diameter is formed so as to guide an outer peripheral side of the coil spring 3 along an axial direction by boring an inner periphery of the outer cylinder 6. COPYRIGHT: (C)2005,JPO&NCIPI
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