Title:
作業工具
Document Type and Number:
Japanese Patent JP7193412
Kind Code:
B2
Abstract:
A work tool includes a housing, a spindle, a motor a transmitting mechanism, and a heat dissipation part. The transmitting mechanism is configured to transmit rotation of a first shaft of the motor to the spindle to cause the spindle to rotary oscillate. The transmitting mechanism includes a metal second shaft coupled to the first shaft and having an eccentric part, a drive bearing including an inner ring fixed around the eccentric part, an outer ring, a plastic retainer arranged between the inner ring and the outer ring, and rolling elements rollably retained by the retainer, and an oscillating member having a first end portion fixed to the spindle and a second end portion abutting on an outer periphery of the outer ring. The heat dissipation part is made of metal, arranged in contact with the second shaft and configured to rotate integrally with the second shaft.
Inventors:
Yonosuke Aoki
Application Number:
JP2019081354A
Publication Date:
December 20, 2022
Filing Date:
April 22, 2019
Export Citation:
Assignee:
Makita Corporation
International Classes:
B25F5/00
Domestic Patent References:
| JP2017144539A | ||||
| JP2011005574A | ||||
| JP2017144537A | ||||
| JP2019051563A |
Attorney, Agent or Firm:
Yuchi International Patent Office
Tetsuyuki Iwata
Toshiyuki Ikeda
Yumiko Fujita
Tetsuyuki Iwata
Toshiyuki Ikeda
Yumiko Fujita