Title:
動力工具
Document Type and Number:
Japanese Patent JP7136202
Kind Code:
B2
Abstract:
Providing a powered tool having high dustproof performance. The powered tool includes a housing 2, a motor 3 supported by the housing, a plunger 7 supported in the housing and operable upon receiving a driving force of the motor, an annular member 923 and an O-ring 924 those surrounding an outer peripheral surface of the plunger to seal the outer peripheral surface of the plunger 7, and a holding part supported by the housing 2 and surrounding the annular member 923 and the O-ring 924 to permit the annular member 923 and the O-ring 924 to be in contact with the outer peripheral surface of the plunger 7 and to retain lubrication oil. The O-ring 924 presses against at least a part of the holding part in response to driving of the plunger 7, so that the lubricant is supplied to a portion between the O-ring 924 and the outer peripheral surface of the plunger 7.
Inventors:
Ryosuke Nakano
Jinichi Yokoyama
Jinichi Yokoyama
Application Number:
JP2020523548A
Publication Date:
September 13, 2022
Filing Date:
April 12, 2019
Export Citation:
Assignee:
Koki Holdings Co., Ltd.
International Classes:
B23D49/16; B25F5/00; B27B19/09; B27G3/00
Domestic Patent References:
| JP11320456A | ||||
| JP2001088050A | ||||
| JP2005319542A |
Foreign References:
| US20080188162 | ||||
| WO2018100941A1 | ||||
| US2631619 |
Attorney, Agent or Firm:
Kazuhiro Kitazawa
Shin Koizumi
Teppei Fukumoto
Yoshie Kim
Mitsukuni Matsuzaka
Shin Koizumi
Teppei Fukumoto
Yoshie Kim
Mitsukuni Matsuzaka
Previous Patent: Information processing device and information processing method
Next Patent: SHOES FOR GON-ARTHRITIS PATIENT
Next Patent: SHOES FOR GON-ARTHRITIS PATIENT