| 摘要 |
PROBLEM TO BE SOLVED: To simply fit a reinforcement clutch. SOLUTION: A cylindrical adapter 10 is fitted through a sleeve 1 to a shaft body 20 of a main shaft S having an axial engagement groove 20a and a circumferential locking groove 20c formed on the outer periphery. The sleeve 1 has an axial engagement claw 2 and a circumferential locking claw 3 at one end thereof. The adapter 10 includes an axial projection 10b formed at one end thereof and a locked part 14 at the inner periphery, with which a locking part 4 provided on the sleeve 1 is engaged. The sleeve 1 is pressed in the adapter 10, the tip of the engagement claw 2 is abutted on the side edge of the other end 10d of the projection 10b, the projection 10b and the engagement claw 2 are fitted in the engagement groove 20a, and the locking claw 3 is stored in the locking groove 20c to inhibit axial movement of the adapter 10 and the shaft body 20. The locking part 4 is engaged with the locked part 14 to inhibit rotation around the axis, and fix the shaft body 20 and the adapter 10. Therefore, the main shaft S can be extended and the reinforcement clutch can be simply fitted. COPYRIGHT: (C)2007,JPO&INPIT
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