| 摘要 |
PURPOSE:To reduce a device in size and to improve the efficiency of assembly by fixing the first clutch disc an the second clutch disc either to an input shaft or to an output shaft by a common clutch hub fixed to one of the input and output shafts. CONSTITUTION:In a double clutch device 12, the first rotor 38 and the second rotor 30 which function as a clutch plate are fixed to an output shaft 18 by the second hub 32 common to the rotors, and only the second hub 32 for power transmission is fixed to the output shaft 18. The double clutch device 12 is assembled in such a manner that a boss portion 51 is disposed in a positioning hole 33, so that the device 12 can be reduced in thickness and weight. At the time of assembly, in case of inserting the output shaft 18 in a clutch case 26, only the output shaft 18 may be spline-fitted to the single second hub 32 to improve the efficiency of assembly.
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