| 摘要 |
A drive shaft (12) to be inserted into a pipe-shaped operating pole (11) for use in a portable working machine is provided. The drive shaft has at least one resin bush (60) integrally formed on its outer peripheral surface. Thus integrally forming the bush on the drive shaft allows agreement between the axis center of the operating pole, the axis center of the bush and the axis center of the drive shaft, preventing the change of position of the bush during the use of the working machine, and resulting in the reduction of vibration of the drive shaft with the simple configuration. <IMAGE> |
