Impact driver having a percussion application mechanism which operation mode can be selectively switched between percussion and non-percussion modes
US7131503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2005 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Jan 31, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2216/0038
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An impact driver capable of boring and having an excellent usability is provided. An anvil(8) is arranged so as to slightly move in the axial direction. A first cam(29) having cam gears(30, 30 . . . ) is externally provided at the anvil so as to be integral with the anvil(8). At the rear of the first cam(29), a second cam(31) having cam gears(32, 32 . . . ) and further having cam gears(36, 36 . . . ) at its outer circumference is externally provided to the anvil(8) so as to be rotatable. At the backward position of the anvil(8), the cam gears(30, 32) contacts with each other. On the other hand, in the cylindrical portion(27) of the hammer case(5), an engaging pin(37) capable of engaging with an engaging gear(36) of the second cam(31) is provided. The engaging pin(37) can change its location by the rotative operation of a mode-change ring(40), whereby a percussion mode and a non-percussion mode is selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.