Patent ID: 6293381
Filing Date: 2001-09-25
Classification: F16D

Abstract:
A hydraulic power transmission joint disposed between an input shaft and an output shaft which are capable of relative rotations, for transmitting torque depending on rotational-speed differences between said two shafts, said hydraulic power transmission joint comprising:a housing coupled to said input shaft and having a cam face formed on the inner side of said housing;a rotor coupled to said output shaft and rotatably housed in said housing, said rotor including a plurality of axially extending plunger chambers;a plurality of plungers each accommodated reciprocatively under a pressing force of a return spring in each of said plurality of plunger chambers, said plurality of plungers being operated by said cam face upon relative rotations between said two shafts;a discharge hole formed in said rotor so as to communicate with said plunger chambers;a valve block having a high-pressure chamber which is in communication with said discharge hole, said valve block having an orifice which generates a flow resistance by the flow of oil discharged by the action of said plungers;a bearing retainer provided adjacent to said valve block and having the outer periphery press-fitted into the interior of said housing, said bearing retainer having on its inside an extension which extends in the axial direction of said output shaft; anda bearing by way of which the outer periphery at the terminal end of said extension of said bearing retainer is rotatably supported on the internal side of a differential gear case.