Title:
POWERED TOOL
Document Type and Number:
WIPO Patent Application WO/2019/235065
Kind Code:
A1
Abstract:
Provided is a powered tool having high dustproof performance. This powered tool has: a housing 2; a motor 3 supported within the housing 2; a plunger 7 supported within the housing 2 and driven by the drive force of the motor 3; an annular member 923 and an O-ring 924, which surround the outer peripheral surface of the plunger 7 and which seal the outer peripheral surface of the plunger 7; and a holding section which is supported by the housing 2, surrounds and supports the annular member 923 and the O-ring 924 so that the annular member 923 and the O-ring 924 are in contact with the outer peripheral surface of the plunger 7, and contains lubricating oil. When the plunger 7 is driven, the O-ring 924 presses at least part of the holding section, and as a result, the lubricating oil is supplied between the O-ring 924 and the outer peripheral surface of the plunger 7.
Inventors:
NAKANO RYOSUKE (JP)
YOKOYAMA YOSHIKAZU (JP)
YOKOYAMA YOSHIKAZU (JP)
Application Number:
PCT/JP2019/015939
Publication Date:
December 12, 2019
Filing Date:
April 12, 2019
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
B23D49/16; B25F5/00; B27B19/09; B27G3/00
Domestic Patent References:
| WO2018100941A1 | 2018-06-07 |
Foreign References:
| JPH11320456A | 1999-11-24 | |||
| JP2005319542A | 2005-11-17 | |||
| US2631619A | 1953-03-17 | |||
| JP2008114343A | 2008-05-22 |
Other References:
See also references of EP 3804892A4
Download PDF: