Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2022/044771
Kind Code:
A1
Abstract:
The present invention achieves improvement in heat resistance. A dust collection box 80 is configured to comprise: a box entrance section 84B through which an air flow AR1 (air flow AR2 and air flow AR3) is let into a dust chamber 80A; and a box-side exhaust outlet 84E through which the air flow AR1 in the dust chamber 80A is let out of the dust chamber 80A. The box-side exhaust outlet 84E is disposed behind the box entrance section 84B. The dust collection box 80 also has a case guide section which guides the air flow AR1 introduced into the dust chamber 80A toward the downstream side. Accordingly, the air flow AR1 introduced into the dust chamber 80A is caused to flow downward at a front end of the dust chamber 80A, to flow backward at a lower end of the dust chamber 80A, and to flow upward at a rear end of the dust chamber 80A. In other words, it becomes possible to cause the air flow AR1 to flow almost entirely throughout the dust chamber 80A. With this configuration, it is possible to efficiently cool a resin outer case 82 that constitutes the dust chamber 80A.
Inventors:
ICHIHASHI NAOTO (JP)
Application Number:
PCT/JP2021/029292
Publication Date:
March 03, 2022
Filing Date:
August 06, 2021
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
B23D47/00; B23D45/16
Foreign References:
| JP2018187704A | 2018-11-29 | |||
| JPH06190628A | 1994-07-12 | |||
| JP2006088559A | 2006-04-06 | |||
| US5074044A | 1991-12-24 |
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