Title:
FASTENING MEMBER
Document Type and Number:
Japanese Patent JP2014206255
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a fastening member capable of preventing detachment from a roof material and the like even when a screw hole is enlarged due to typhoon and the like without a need of a special tool or a special operation.SOLUTION: In a fastening member 1, an enlarged piece 4 for detachment-prevention that is enlarged outward in a radial direction of a screw shaft part 2 is provided in an axial line direction of the screw shaft part 2. The enlarged piece 4 for detachment-prevention has a stationary part 41 formed at a tip side and fixed to the screw shaft part 2, and an enlarged part 42 formed on a rear end side and enlarged nearer an outer side in the radial direction than a thread 21. An enlarged piece housing recess 5 for fixing the fixing part 41 of the enlarged piece 4 for detachment-prevention and housing the enlarged part 42 of the enlarged piece 4 for detachment-prevention whose diameter is reduced inward in the radial direction by an external force is formed on the screw shaft part 2 in the axial line direction of the screw shaft part 2.
Inventors:
NAKAGAWA ISAMU
NAKAGAWA YOSHINORI
NAKAGAWA YOSHINORI
Application Number:
JP2013085335A
Publication Date:
October 30, 2014
Filing Date:
April 16, 2013
Export Citation:
Assignee:
HOKKAI GIKEN KOGYO KK
International Classes:
F16B39/02; F16B35/00; F16B41/00
Domestic Patent References:
| JPS3117609Y1 | ||||
| JPS49123470U | 1974-10-23 | |||
| JP2006063605A | 2006-03-09 |
Attorney, Agent or Firm:
Shingo Sagawa
Kobayashi Motoko
Takahashi History 織
Yosuke Kawano
Kobayashi Motoko
Takahashi History 織
Yosuke Kawano
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