Title:
作業機
Document Type and Number:
Japanese Patent JP7218792
Kind Code:
B2
Abstract:
The present invention reduces occurrence of vibration in a direction different from the reciprocating direction due to contact between power transmission parts during power transmission of a work machine. The work machine has a rotating part (an eccentric shaft (36e), a ball bearing (45)) rotated by a spindle (36) connected to a motor, and a reciprocating motion converting part (swing arm (40)) that engages with the ball bearing (45) and converts the motion into reciprocating motion around an axis B1 with the rotation of the rotating part. The ball bearing (45) is configured to be movable relative to the swing arm (40) in the front-rear direction. A spring (46) is provided behind the ball bearing (45), and the ball bearing (45) is biased rearward in the axial direction by the spring (46).
Inventors:
Manami Nakazawa
Takuhiro Murakami
Takashi Kawamata
Takuhiro Murakami
Takashi Kawamata
Application Number:
JP2021501798A
Publication Date:
February 07, 2023
Filing Date:
January 31, 2020
Export Citation:
Assignee:
Koki Holdings Co., Ltd.
International Classes:
B25F5/00; B23D49/16; B23D51/16; B24B23/04; B27B19/09
Domestic Patent References:
| JP60155049A | ||||
| JP2013071373A | ||||
| JP2016087730A | ||||
| JP2013169623A | ||||
| JP2209653A | ||||
| JP2000501030A |
Foreign References:
| US20050126803 | ||||
| US20150034353 |
Attorney, Agent or Firm:
Seiryo Patent Attorneys Corporation