Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/101022
Kind Code:
A1
Abstract:
Provided is a work machine in which a counterweight is appropriately supported, thereby avoiding deterioration of workability. This work machine comprises: a motor 20; a plunger 30 that is reciprocated in the front-rear direction by driving of the motor; a crankshaft 51 that is rotated around an axis extending in the up-down direction by driving of the motor; a counterweight 80 that is driven in the front-rear direction by the rotation of the crankshaft so as to cancel vibrations caused by the reciprocation of the plunger 30; a transmission mechanism (a gear 50, the crankshaft 51, and a connector 70) that converts a rotational driving force of the motor into a driving force for the plunger and the counterweight, and transmits the driving force to the plunger and the counterweight; and a gear case (a transmission mechanism housing part 61 and a lid part 62) that houses the transmission mechanism, and elastically supports the counterweight in the left-right direction.
Inventors:
ISEDA KEIGO (JP)
INUI KEN (JP)
HIRANO SHOTA (JP)
INUI KEN (JP)
HIRANO SHOTA (JP)
Application Number:
PCT/JP2022/044625
Publication Date:
June 08, 2023
Filing Date:
December 02, 2022
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
B25F5/00; B23D49/16
Domestic Patent References:
| WO2017104380A1 | 2017-06-22 |
Foreign References:
| JP2018062023A | 2018-04-19 |
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