Title:
VENTILATION FAN
Document Type and Number:
WIPO Patent Application WO/2017/158833
Kind Code:
A1
Abstract:
This ventilation fan is provided with: a main body frame (2) which, having the shape of a cylinder opening on the indoor side and on the outdoor side, has multiple shutter plate mounting shafts (20a) on both sides of the inner surface of the outdoor-side end; a fan which is arranged inside of the main body frame (2); and a shutter plate (9) which is rotatably supported by a shutter plate mounting shaft (20a). The shutter plate (9) is provided with a plate-shape flat plate part which opens and closes the outdoor-side opening of the main body frame (2), a retention hole (50a) which stands up from both ends of the flat plate part and into which a shutter plate mounting shaft (20a) is inserted, and an elastically deformable ear portion (40a). On the outdoor side, the shutter plate mounting shaft (20a) has a guide surface (21) which guides the ear portion (40a) towards the tip side when said shaft is inserted into the retention hole (50a). The further towards the tip of the shutter plate mounting shaft (20a), the closer the guide surface (21) approaches the center of the shutter plate mounting shaft (20a).
Inventors:
NAKATANI KAORU (JP)
YASUDA YUICHI (JP)
YASUDA YUICHI (JP)
Application Number:
PCT/JP2016/058777
Publication Date:
September 21, 2017
Filing Date:
March 18, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24F7/013; F24F13/15
Foreign References:
| JP2013204857A | 2013-10-07 | |||
| JPH10220833A | 1998-08-21 | |||
| JPS6245621U | 1987-03-19 | |||
| JPS63172829U | 1988-11-10 | |||
| JPS59174541U | 1984-11-21 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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