Title:
FAN UNIT, ELECTRIC DEVICE, AND BOLT FALL PREVENTION STRUCTURE
Document Type and Number:
Japanese Patent JP2020016311
Kind Code:
A
Abstract:
To provide a new structure that can prevent a bolt from falling.SOLUTION: A fan unit 3 according to the present disclosure comprises a cover member 4 fixed to a case 1 housing a device body 2 so as to cover an opening part 1A of the case, a fan body 6 installed on the cover member 4 so as to be located in the opening part 1A while the cover member 4 is fixed to the case 1, a bolt 7 for fastening the cover member 4 to the case 1, and an annular washer 8 into which the bolt 7 is inserted. A bolt insertion hole 4a penetrating in a thickness direction is formed in the cover member 4. The bolt 7 comprises a head part 7a brought into contact with the cover member 4, a male screw part 7c inserted into the bolt insertion hole 4a and screwed to the case 1, and a narrow neck part 7b arranged between the head part 7a and the male screw part 7c and having a smaller diameter than that of the male screw part 7c. The washer 8 comprises a female screw part to which the male screw part 7c can be screwed, in an inner surface.SELECTED DRAWING: Figure 2
Inventors:
YAMANISHI AKIHIRO
INOUE FUMIHIKO
MATSUKI TSUNEKI
INOUE FUMIHIKO
MATSUKI TSUNEKI
Application Number:
JP2018141007A
Publication Date:
January 30, 2020
Filing Date:
July 27, 2018
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND
MITSUBISHI ELECTRIC CORP
MITSUBISHI ELECTRIC CORP
International Classes:
F04D29/64; F16B41/00; F16B43/00
Domestic Patent References:
| JPH0942232A | 1997-02-10 | |||
| JP2007225089A | 2007-09-06 | |||
| JPS62141304A | 1987-06-24 | |||
| JPH02300510A | 1990-12-12 | |||
| JP2011117484A | 2011-06-16 |
Attorney, Agent or Firm:
Fukami patent office