| 摘要 |
A clutch drum 300 of a clutch C3 includes an outer cylinder portion 301 that extends in an axial direction and is fitted with an outer circumferential portion of a separator plate 304s, an inner cylinder portion 303 that extends in the axial direction inside the outer cylinder portion 301 and movably supports an inner circumferential portion of a piston 305, and an annular wall portion 302 that is integrally formed with the outer cylinder portion 301 and the inner cylinder portion 303 so as to extend in a radial direction between the outer cylinder portion 301 and the inner cylinder portion 303. An inner circumferential surface of the inner cylinder portion 303 is joined with an outer circumferential surface of a clutch drum 400 of a clutch C4. |
