| 主权项 |
1. An impact tool which drives a tool bit in a longitudinal direction of the tool bit and performs a predetermined operation, comprising:
a motor which includes a motor shaft, a driving mechanism which is driven by the motor and drives the tool bit, a main housing which houses the driving mechanism, a handle which includes a grip portion extending in a cross direction crossing the longitudinal direction of the tool bit, the handle being configured to be moved with respect to the main housing, a biasing member which is arranged between the main housing and the handle and applies biasing force on the handle, a weight which is housed in the main housing and movable with respect to the main housing, a first crank mechanism which has a first rotation shaft and a first eccentric shaft which is offset from the rotational center of the first rotation shaft, the first crank mechanism being configured to be driven by the motor and drive the driving mechanism, and a second crank mechanism which has a second rotation shaft and a second eccentric shaft which is offset from the rotational center of the second rotation shaft, the second crank member being configured to be driven by the motor and drive the weight such that the weight is relatively moved with respect to the main housing, wherein the weight is configured to reduce vibration generated on the main housing during the operation by relatively moving with respect to the main housing, and the handle is configured to prevent vibration transmission from the main housing to the handle during the operation by relatively moving with respect to the main housing in a state that the biasing force of the biasing member is applied on the handle. |
