To provide a power transmission device capable of improving the design freedom for a peripheral member.
The power transmission device 1 includes a casing 3, an outer rotating member 5, a support bearing 7 rotatably supporting the outer rotating member 5 with respect to the casing 3, an inner rotating member 9 formed hollowly and provided so as to carry out relative rotation with the outer rotating member 5, a driving shaft 13 formed like a shaft and connected to the inner rotating member 9 so as to integrally rotate via a connection part 11, an engaging and disengaging part 15 carrying out engagement and disengagement of the outer rotating member 5 and the inner rotating member 9, and an actuator 19 having a starting source 17 and operating the engaging and disengaging part 15. In an inner periphery of the inner rotating member 9, a wall part 23 is provided, disposed facing an axial tip face 21 of the driving shaft 13, and an energizing member 25 applying pressure to the inner rotating member 9 and pressurizing the support bearing 7 via the outer rotating member 5 is provided between the wall part 23 and the tip face 21 in a wall part 23 side than the connection part 11 of the driving shaft 13.
UCHIDA NOBORU
TAMURA ATSUSHI
TAKAHASHI MASAKI
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
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