Title:
IMPACTING WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/110539
Kind Code:
A1
Abstract:
The objective of the present invention is to reduce, as far as possible, the number of components in a power transmission system provided in an impacting work machine having a plurality of operating modes. A hammer drill 1A is provided with an intermediate shaft 25 which is driven in rotation, and a rotational force transmission system 40 which transmits the rotational force of the intermediate shaft 25 to a tip tool 2. The rotational force transmission system 40 includes a sleeve 41 provided on the intermediate shaft 25 in such a way as to be capable of moving forward and backward along the intermediate shaft 25. When the sleeve 41 moves forward, the sleeve 41 and the intermediate shaft 25 engage with one another, and the rotational force can be transmitted to the tip tool 2, and when the sleeve 41 moves backward, the engagement between the sleeve 41 and the intermediate shaft 25 is released, and the rotational force cannot be transmitted to the tip tool 2.
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| WO/2020/106689 | DUST COLLECTOR INCLUDING FILTER CLEANING MECHANISM |
| JP2000233381 | ROTARY HAMMER |
| WO/2019/065087 | ELECTRIC TOOL |
Inventors:
YAMADA HIDEKI (JP)
OOKUBO TAKAHIRO (JP)
OOKUBO TAKAHIRO (JP)
Application Number:
PCT/JP2019/041959
Publication Date:
June 04, 2020
Filing Date:
October 25, 2019
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
B25D16/00; B23B45/16; B25D11/00
Domestic Patent References:
| WO2017073236A1 | 2017-05-04 |
Foreign References:
| JPH07328955A | 1995-12-19 | |||
| JPS5015653B1 | 1975-06-06 | |||
| JPS582760B2 | 1983-01-18 | |||
| JP2003245872A | 2003-09-02 |
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