| 主权项 |
1. A power tool, which performs a predetermined operation on a workpiece at least by axial linear movement of a tool bit coupled to a front end region of a housing, the power tool comprising:
a driving mechanism that is housed within the housing and linearly drives the tool bit, and a dynamic vibration reducer that includes a weight which is allowed to linearly move under a biasing force of an elastic element, the dynamic vibration reducer being configured to reduce vibration caused during operation by movement of the weight in the axial direction of the tool bit, wherein:
a dynamic vibration reducer housing space houses the weight and the elastic element of the dynamic vibration reducer, the dynamic vibration reducer housing space being integrally formed with the housing,the dynamic vibration reducer housing space has an elongated shape extending in the axial direction of the tool bit and has one axial open end such that the weight and the elastic element are insertable into and removable from the dynamic vibration reducer housing space through an opening of the open end without displacement of the dynamic vibration reducer housing with respect to the tool bit in a direction crossing the axial direction of the tool bit, wherein the elastic element has a diameter that is smaller than a diameter of the open end,the dynamic vibration reducer has a sealing member that compresses the elastic element and seals the opening under a biasing force of the elastic element,the housing has a retaining member that retains the sealing member placed in a position to seal the opening,a slide guide is disposed within the dynamic vibration reducer housing space, the weight is slidably held in contact with the slide guide, and the slide guide is held pressed against the sealing member by the biasing force acting in a direction of the opening,the slide guide is disposed between a pressure spring at a first end of the slide guide and an O-ring at a second end of the slide guide. |
