Toyota Jidosha Kabushiki Kaisha

Kazuhiro Toyama

Tetsuo Hamajima

Shingo Iwatani

Tadashi Takagaki

Masataka Umemura

A method of manufacturing a driving drum includes: molding a first cylindrical member including first large- and small-diameter parts, a diameter of an outer circumferential surface of the first small-diameter part being smaller than that of the first large-diameter part; molding a second cylindrical member having second large- and small-diameter parts, a diameter of an inner circumferential surface of the second large-diameter part corresponding to the diameter of the outer circumferential surface of the first small-diameter part, a diameter of an inner circumferential surface of the second small-diameter part corresponding to that of the first small-diameter part, and the diameter of the inner circumferential surface of the second small-diameter part being smaller than that of the second large-diameter part; and forming a first cam groove between the first and second small-diameter parts and forming a second cam groove between the first and second large-diameter parts.

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Toyota, Japan

Kazuhiro Toyama