Patent ID: 8109377

Claim:
A clutch device comprising: a clutch outer relatively non-rotatably supported on a cylindrical boss which is rotatably borne on a clutch support shaft in the state of being restricted in axial movement and to which rotating motive power from a motive power source is transmitted; a clutch inner axially movably and relatively non-rotatably connected to a transmission shaft which is disposed coaxially with said clutch support shaft; a plurality of clutch plates relatively non-rotatably engaged with said clutch outer; a plurality of clutch disks disposed alternately with said clutch plates and relatively non-rotatably engaged with said clutch inner; an end plate relatively non-rotatably and axially movably supported on said clutch outer in such a manner as to face said clutch plate or said clutch disk on one end side in an axial direction of said clutch support shaft and said transmission shaft, of said clutch plates and said clutch disks overlapping with each other, and to be restricted in movement toward said one end side in said axial direction; and a piston slidably fitted in said clutch outer in such a manner as to be able to push said clutch plates and said clutch disks toward the side of said end plate, wherein said end plate is provided with a restricting part for restricting the movement of said clutch inner toward said one end side in said axial direction.