| 摘要 |
The present invention pertains to a transmission device wherein cancellation chamber concave parts (403c) and cancellation chamber concave parts (403d) are formed in the circumferential direction, with intervals therebetween, on the inner circumferential surface of an inner cylinder part (403) of a clutch drum (400) of a clutch (C4) that forms a drum member together with a clutch drum (300) of a clutch (C3). The cancellation chamber concave parts (403c) communicate with a cancellation chamber oil supply passage (234) and cancellation chamber oil passages (402y), which extend in the radial direction and communicate with a centrifugal oil pressure cancellation chamber (308) of the clutch (C3) on the outside. The cancellation chamber concave parts (403d) communicate with the cancellation chamber oil supply passage (234) and cancellation chamber oil holes (403y) formed in the inner cylinder part (403) so as to communicate with a centrifugal oil pressure cancellation chamber (408) of the clutch (C4) on the inside. |
