Title:
SCREW
Document Type and Number:
WIPO Patent Application WO/2020/166415
Kind Code:
A1
Abstract:
Provided is a screw with which screw insertion torque can be further reduced and conductivity can be stabilized while the ease of peeling off a coating film, etc., is ensured. The screw has a recess (7) partially provided in a flank surface (131) of a screw crest provided to a screw shaft body (5), the screw being characterized in that a screw crest (13) of the portion where the recess (7) is formed is smaller than a regular screw crest (3), and a crest height (H12) at a distal end in the screw insertion direction is lower than a crest height at a rear end (H11) in the screw insertion direction W.
Inventors:
MORI SHIGETO (JP)
MATSUNO MAYUMI (JP)
HORIUCHI NAOKI (JP)
MATSUNO MAYUMI (JP)
HORIUCHI NAOKI (JP)
Application Number:
PCT/JP2020/003975
Publication Date:
August 20, 2020
Filing Date:
February 03, 2020
Export Citation:
Assignee:
TOPURA KK (JP)
International Classes:
F16B25/04; F16B33/02; F16B35/00
Domestic Patent References:
| WO2015049761A1 | 2015-04-09 | |||
| WO2015098823A1 | 2015-07-02 |
Foreign References:
| JP2005127487A | 2005-05-19 | |||
| KR20090017318A | 2009-02-18 | |||
| JP2013096466A | 2013-05-20 | |||
| JP3389331B2 | 2003-03-24 |
Other References:
See also references of EP 3926183A4
Attorney, Agent or Firm:
IP Firm SHUWA (JP)
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