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Title:
INTERNAL SCREW COMPONENT, EXTERNAL SCREW COMPONENT AND WASHER COMPONENT
Document Type and Number:
Japanese Patent JP2017009061
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an external screw component, an internal screw component and a washer component capable of easily preventing looseness of a screwing portion.SOLUTION: This invention includes an internal screw body part 11 having an internal screw part 13, and an annular internal screw seat part 12 arranged between the internal screw body part 11 and a fastened member 30. At a contact position between the internal screw body part 11 and the internal screw seat part 12, provided are a projection part 15 and a recess part 16 slidably fitted into each other. The projection part 15 and the recess part 16 have a spherical shape with one point on an axial line L as a center. When a load in a direction crossing the axial line L is applied between the internal screw body part 11 and the fastened member 30 in a screwed state, the radius of the spherical shape is set so that the projection part 15 and the recess part 16 slide in ahead of the internal screw part 13.SELECTED DRAWING: Figure 2

Inventors:
OKA KAZUTOMI
Application Number:
JP2015126068A
Publication Date:
January 12, 2017
Filing Date:
June 23, 2015
Export Citation:
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Assignee:
OKA KAZUTOMI
International Classes:
F16B39/24; F16B35/00; F16B37/00; F16B43/00
Domestic Patent References:
JP2002295440A2002-10-09
JPH10318240A1998-12-02
JP2004340211A2004-12-02
JPH1078017A1998-03-24
JPS5437912A1979-03-20
JPH03157510A1991-07-05
JPS5737115A1982-03-01
JP2011058614A2011-03-24
JPS6047881A1985-03-15
JP2010014233A2010-01-21
JP2003278734A2003-10-02
Foreign References:
US20140017029A12014-01-16
CN203248491U2013-10-23
CN201539491U2010-08-04
WO2006045281A12006-05-04
DE19649890A11998-06-04
EP0427030A21991-05-15
US20140271028A12014-09-18
US20140165370A12014-06-19
Attorney, Agent or Firm:
Kazuyuki Hirayama
Yoshinori Morita



 
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