To provide a driving force transmission device of a hybrid vehicle that prevents a two-way clutch from being switched to an engagement state when traveling by the drive of an engine.
Between a holder 25 of the two-way clutch 19 and a housing 33, a frictional resistance giving means 40 is built in that gives frictional resistance to the holder 25 so as to engage a sprag 24 by making an outer ring 22 of the two-way clutch 19 and the holder 25 rotate relatively when driven by an electric motor. Also, an elastic member 51, which gives rotational resistance to the outer ring 22, is built in between a friction plate 44, which forms a frictional resistance giving means 40, and the outer ring 22. The outer ring 22 of the two-way clutch 19 is made to rotate by vibration etc. when the vehicle travels by the drive of the engine to prevent the two-way clutch 19 from being engaged in the direction that impedes the rotation of rear wheels.
Torii Kazuhisa
Takayoshi Tagawa
Higashio Masahiro