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Patent Searching and Data


Title:
IMPACT TOOL
Document Type and Number:
WIPO Patent Application WO/2014/125813
Kind Code:
A1
Abstract:
An impact tool includes a housing, a spindle, a bearing, an anvil, and a percussion mechanism. The spindle is accommodated in the housing and is driven to rotate by a drive source. The bearing is accommodated in and engaged with the housing. The bearing is disposed in front of the spindle. The anvil is coaxially and rotatably connected to the spindle and is rotatably supported by the bearing. The anvil is formed with an mounting hole at a front end thereof. The mounting hole allows a tip tool to be mounted therein. The anvil and the bearing define a contact surface on which the anvil and the bearing rotate relative to each other. The percussion mechanism is configured to transmit a rotation movement of the spindle to the anvil as rotary percussive force. The bearing is formed with an oil supply channel allowing oil to be supplied from a rear end side of the bearing to the contact surface.

Inventors:
UCHIDA HIROKI (JP)
NAKANO YOSHIHIRO (JP)
KOMURO YOSHIHIRO (JP)
HARADA TETSUHIRO (JP)
TANIMOTO HIDEYUKI (JP)
Application Number:
PCT/JP2014/000717
Publication Date:
August 21, 2014
Filing Date:
February 12, 2014
Export Citation:
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Assignee:
HITACHI KOKI KK (JP)
International Classes:
B25B21/02
Foreign References:
US20090223690A12009-09-10
JP2004174656A2004-06-24
US2341497A1944-02-08
EP2335881A12011-06-22
US6223834B12001-05-01
EP2025473A22009-02-18
Attorney, Agent or Firm:
KITAZAWA, Kazuhiro et al. (31-14 Yushima 2-chome, Bunkyo-k, Tokyo 34, JP)
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