| 摘要 |
A gear for power delivering apparatus comprises body unit, gear unit engaging with another gear at the outer periphery of the body unit, and impact absorbing member between the body unit and the gear unit. The impact absorbing member, including space between the body unit and the gear unit and a plurality of arms in space, absorbs the impact applied to teeth of the gear unit. The arms are helically formed, so that absorption of the impact applied to the gear depends on the rotation direction of the gear.
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