| 摘要 |
PROBLEM TO BE SOLVED: To improve the strength of a support member which supports a counter drive gear of a power transmission device.SOLUTION: In a power transmission device 20, a drum part 110 functioning as a brake drum of a brake B1, which unrotatably fixes a second sun gear of a second planetary gear mechanism to the transmission case 22, is integrally molded with a support member 100 which is fixed to the transmission case 22 through a bolt 99 and rotatably supports a counter drive gear 41. As described above, integrally molding the cylindrical drum part 110 with the support member 100 supporting the counter drive gear 41 allows the drum part 110 to function as a rib. Thus, the strength of the support member 100 is improved. |
