Title:
SCREW FASTENING STRUCTURE AND SEAT BODY
Document Type and Number:
WIPO Patent Application WO/2018/088282
Kind Code:
A1
Abstract:
A screw fastening structure wherein a male screw body is equipped with a male screw helical structure and a male-screw-side concavo-convex structure different from the male screw helical structure and configured from recesses and protrusions, a female screw body is equipped with a female screw helical structure that can be screwed together with the male screw helical structure, and a female-screw-side radial engagement section capable of engaging a seat body in the radial direction, and the seat body is equipped with a seat-body-side radial engagement section that engages the female-screw-side radial engagement section, thereby receiving radial restraining force toward the inside in the radial direction, and a seat-body-side concavo-convex structure that engages the male-screw-side concavo-convex structure, thereby forming an engaged state other than the screwed-together state of the male screw body and the female screw body.
Inventors:
MICHIWAKI HIROSHI (JP)
Application Number:
PCT/JP2017/039447
Publication Date:
May 17, 2018
Filing Date:
October 31, 2017
Export Citation:
Assignee:
NEJILAW INC (JP)
International Classes:
F16B39/18; F16B39/24; F16B39/282; F16B39/30
Foreign References:
| JP2011058632A | 2011-03-24 | |||
| JPS52132969U | 1977-10-08 | |||
| JPS311634Y1 | 1956-02-04 | |||
| JP2014126159A | 2014-07-07 | |||
| JP2012177466A | 2012-09-13 |
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