Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/176711
Kind Code:
A1
Abstract:
The present invention improves the durability of a work machine. In this work machine, a driving machine comprises: an electric motor; a striking element 112 which is capable of striking a stopper by being moved toward the lower side in the vertical direction D1; a biasing part which biases the striking element 112 toward the lower side in the vertical direction D1; and a rotary part which comprises a first gear 151, a second gear 152, and a third gear 153 that move the striking element 112 toward the upper side in the vertical direction D1. The rotary part includes a wheel 150 and a plurality of engagement parts that are disposed so as to be engageable with the striking element 112. The engagement parts include: a second pin 152a and a third pin 152b that engage with the striking element 112 when the striking element 112 is to be moved toward the upper side in the vertical direction D1; and a stopper pin 152c that is not engaged with the striking element 112 when the striking element 112 is to be moved toward the upper side in the vertical direction D1.
Inventors:
OOTSUKA KAZUHIRO (JP)
Application Number:
PCT/JP2023/009232
Publication Date:
September 21, 2023
Filing Date:
March 10, 2023
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
B25C1/06; B25C7/00
Domestic Patent References:
| WO2011010512A1 | 2011-01-27 |
Foreign References:
| JP2018039064A | 2018-03-15 | |||
| JP2014069289A | 2014-04-21 | |||
| EP3730248A1 | 2020-10-28 |
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