Ogura Clutch Company, Ltd.

Katsunao Busujima

Yoshihiro Kurosu

Enjiro Maejima

In a power transmission apparatus, a torque limiter mechanism has a plurality of holding portions, a disc plate and a flange, and an elastic member. The plurality of holding portions are fixed to either one of a pulley and a hub and aligned substantially equidistantly in a circumferential direction. The disc plate and flange are provided to either one of the pulley and the hub and oppose the holding portions. The elastic member is frictionally connected to the holding portions and the disc plate and flange, and is fixed to the remaining one of the pulley and the hub. The elastic member has connecting portions and an elastic support. The connecting portions are frictionally connected to the holding portions and the disc plate and flange, and correspond in number to the holding portions. The elastic support is fixed to the remaining one of the pulley and the hub, and is imparted with an elastic restoration force for disengaging the connecting portions toward either one of upper and lower surfaces of the holding portions. The connecting portions and the holding portions, and the connecting portions and the disc plate and flange are frictionally connected to each other, and the elastic support is elastically deformed in an axial direction.

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Gunma, Japan

Katsunao Busujima