| 摘要 |
It is an object of the present invention to provide a vibration reducing technique caused by air pressure fluctuations within a power tool. According to the present invention, a representative power tool may comprise a driving motor (111) , a driver (113) and a tool bit (119). The driving motor (111) drives the driver (113) to cyclically reciprocate. The tool bit is linearly driven by utilizing the pressure of air within the power tool. The air may be compressed by the reciprocating movement of the driver (113) . The power tool changes the rotational speed of the driving motor (111) in the cycle of the reciprocating movement of the driver (113) so that vibration caused in the power tool can be alleviated. |
