Patent ID: 6427796
Filing Date: 2002-08-06
Classification: B62K,B62M,F02B

Abstract:
A rear wheel suspension system of a motorcycle in which an engine unit is mounted to a motorcycle body and a power transmission unit coupled to the engine unit is arranged to the motorcycle body to be swingable through a pivot shaft, said rear wheel suspension system, comprising the power transmission unit, a pair of arm members disposed to lateral side portions of the motorcycle body in parallel to each other, and connection members connecting both end portions of the arm members at portions behind the pivot shaft, wherein one of said arm members constitutes the power transmission unit including a propeller shaft, a bearing for the propeller shaft and a reduction mechanism, said transmission unit having inner hollow portion in which the propeller shaft is accommodated and having a structure dividable into lateral two parts forming an arm base section and a cover section, and said bearing is formed in the cover section of the power transmission unit so as to support one end portion of the propeller shaft.