Title:
IMPACT TOOL
Document Type and Number:
WIPO Patent Application WO/2021/241099
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce stress applied to a striking claw during striking, by providing a tapered portion on a front outer peripheral side of a hammer of an impact tool. This impact tool comprises a hammer 30 that is rotated by a motor and biased toward a front side from a spindle by a cam mechanism and a spring, and an anvil 50 that is struck by the hammer 30. The hammer 30 includes a main body part 31, and claw parts 36 to 38 extending frontward from the main body part 31, and tapered surfaces 34a to 34c are formed such that an edge on a radially inner side of each of the claw parts 36 to 38 of the main body part 31 is positioned on the front side relative to an edge on a radially outer side of the claw part. The tapered surfaces 34a to 34c are formed, on an outer peripheral side of a front facing surface 32 of the hammer 30, in such a shape that the tapered surfaces recede as separating in a radial direction from a rotation axis A1.
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Inventors:
TAMURA KENGO (JP)
TOUKAIRIN JUNICHI (JP)
TAKEUCHI SHOTA (JP)
TOUKAIRIN JUNICHI (JP)
TAKEUCHI SHOTA (JP)
Application Number:
PCT/JP2021/016543
Publication Date:
December 02, 2021
Filing Date:
April 23, 2021
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
B25B21/02
Domestic Patent References:
| WO2016002539A1 | 2016-01-07 |
Foreign References:
| JP2005254374A | 2005-09-22 | |||
| JP2008535675A | 2008-09-04 |
Other References:
See also references of EP 4159375A4
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