Title:
MACHINE SCREW AND FIXING STRUCTURE
Document Type and Number:
Japanese Patent JP2022184079
Kind Code:
A
Abstract:
To provide a machine screw and a fixing structure capable of effectively suppressing warping-up of a peripheral edge portion of a screw hole.SOLUTION: In order to solve the problem, a machine screw of the present invention includes: a head portion; a shaft portion extending from the head portion to one side and having an outer peripheral surface on which a screw portion is formed; and a hole portion formed over a range from an end face at the other side of the head portion to the inside of the shaft portion, and through which a tip of a tool for rotating the machine screw around the axis of the shaft portion can be inserted from the other side. The head portion has: a reference face facing one side and extending to a radial outer side of the shaft portion; and a plurality of projecting portions projecting to one side from the reference face and formed to be arranged in a rotating direction of the shaft portion, and the plurality of projecting portions extend from the shaft portion to the radial outer side of the shaft portion.SELECTED DRAWING: Figure 1
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Inventors:
TO MASAAKI
TANAKA TORU
CHEN YICHONG
TANAKA TORU
CHEN YICHONG
Application Number:
JP2021091720A
Publication Date:
December 13, 2022
Filing Date:
May 31, 2021
Export Citation:
Assignee:
SEKISUI HOUSE KK
AITEC KK
TAIFAS CORP
AITEC KK
TAIFAS CORP
International Classes:
F16B25/00; F16B23/00; F16B25/10; F16B39/282
Attorney, Agent or Firm:
Masataka Kotani
Atsushi Yamamoto
Atsushi Yamamoto