FASTENING MEMBER AND FASTENING STRUCTURE

WIPO Patent Application WO/2011/105225

A1

Provided is a fastening member which produces high locking effectiveness. A fastening member (1) is provided with threads having an upper portion (11) on the thread tip side and a lower portion (12) on the thread bottom side in at least a part of threads (10), said upper portion and said lower portion having the following structure. A pressure-side flank surface (13) and a looseness-side flank surface (14) are formed in the upper portion (11), and a pressure-side side surface (15) and a looseness-side side surface (16) are formed in the lower portion (12). The pressure-side side surface (15) continuously extends from the lower end of the pressure-side flank surface (13). The pressure-side side surface (15) continuously extends from the lower end of the pressure-side side surface in a section including the axis of the fastening member (1). The shape of the pressure-side side surface (15) is a curved shape formed along a curved line formed by inwardly bending an extended line of the pressure-side flank surface (13), or a shape obtained by combining a straight line shape formed along a straight line disposed on the inside of the extended line of the pressure-side flank surface (13) with a curved line shape formed along a curved line formed by inwardly bending the extended line.

MATSUBAYASHI KOU (JP)
MIYAKE TAKUSHI (JP)

PCT/JP2011/052877

September 01, 2011

February 10, 2011

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ART SCREW CO LTD (JP)
CITY OF NAGOYA (JP)
MATSUBAYASHI KOU (JP)
MIYAKE TAKUSHI (JP)

F16B33/02; F16B39/30

WO2010092817A1	2010-08-19
WO2008081721A1	2008-07-10

JP2008144955A	2008-06-26
JP3031085U	1996-11-12

KONISHI, Tomimasa (JP)
Konishi Tomu -- elegant (JP)

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