| 摘要 |
PURPOSE:To facilitate semi-clutch operation while to reduce the size by arranging a cone type clutch on the innercircumference of rotor having a projection to be engaged with a slit made in the driving drum. CONSTITUTION:Driving drum 15 is fixed through a key 20 to the drive shaft 1 while a plurality of slits 16 are made in parallel with the drive shaft 1 in the outercircumference of said drum 15. The projecion 17 formed on the otercircumference of the rotor 14 is engaged with the slit 16 while the inner face of rotor 14 is formed such that the diameter will be shortest in the center and increase toward the opposite ends. The drive shaft 1 is provided with a cone type movable clutch 4 having a cone section 6 jointable with one face (a) of the rotor 14 and a cone type fixed clutch 8 having a cone section 13 jointable with one face (b) of the rotor 14 thus to construct a cone type double step clutch geared through clicks 10, 11. |
