发明申请
- 专利标题: Impact tool
- 专利标题(中): 冲击工具
-
申请号: US12654115申请日: 2009-12-10
-
公开(公告)号: US20100155094A1公开(公告)日: 2010-06-24
- 发明人: Hiroki Ikuta , Masao Miwa , Takuya Sumi
- 申请人: Hiroki Ikuta , Masao Miwa , Takuya Sumi
- 申请人地址: JP Anjo-shi
- 专利权人: MAKITA CORPORATION
- 当前专利权人: MAKITA CORPORATION
- 当前专利权人地址: JP Anjo-shi
- 优先权: JP2008-324775 20081219
- 主分类号: B25D17/11
- IPC分类号: B25D17/11
摘要:
It is an object of the invention to reduce noise caused by run-out of a tool bit in an impact tool. The representative impact tool according to the invention includes a tool holder 137 that houses a tool bit 119 in such a manner that the tool bit can linearly move in its axial direction, and a barrel 108 that is integrally connected to the tool holder 137 The impact tool further includes an elastic element 155 that is disposed between an inner circumferential surface of the tool holder 137 and an outer circumferential surface of the tool bit 119 in an end region of the tool bit 119 on the barrel side and connected in close contact with the tool holder 137 and the tool bit 119 over a predetermined length of the tool bit 119 in the axial direction. The elastic element 155 applies a biasing force to prevent a run-out of the tool bit 119 in a direction transverse to the axial direction. Further, an intermediate element 145 comes in point contact with the tool bit 119 on its axial center line.
公开/授权文献
- US08413742B2 Impact tool 公开/授权日:2013-04-09
信息查询