Title:
JOINT USING INCOMPLETE SCREW PART OF MALE SCREW PART
Document Type and Number:
Japanese Patent JP2020056154
Kind Code:
A
Abstract:
To provide a joint using an incomplete screw part of a male screw part which can satisfy both of requirements on tensile resistance strength and compression resistance strength, enhance versatility, and reduce cost by reducing the number of parts.SOLUTION: A joint is configured by connecting a pair of reinforcement bars 1, 1 with a cylindrical coupler 2 screwed into male screw parts 1c arranged at both ends of the pair of the reinforcement bars. Torque to prevent slack between the male screw parts 1c and the coupler 2 is created in a way that, in either reinforcement bar 1 of the pair of the reinforcement bars 1, 1, a screw thread of a female screw part 2a of the coupler 2 is deeply screwed into threaded grooves of incomplete screw parts 1ca at base ends of the male screw parts 1c of the reinforcement bar 1 to such an extent that it intrudes to be at least elastically deformed. As the torque is created to prevent slack between the male screw parts 1c and the coupler 2 using the incomplete screw parts 1ca which are generally unused, it is not necessary to secure such length that a locknut or the like is screwed into the male screw part 1c of at least the either of the reinforcement bars 1.SELECTED DRAWING: Figure 1
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Inventors:
WAKIYAMA KOZO
HIRAI KEIJI
FUKUDA AKIRA
HIRAI KEIJI
FUKUDA AKIRA
Application Number:
JP2018184967A
Publication Date:
April 09, 2020
Filing Date:
September 28, 2018
Export Citation:
Assignee:
FUKUDA AKIRA
International Classes:
E04C5/18; F16B7/18; F16B39/02
Attorney, Agent or Firm:
Shuji Sugimoto
Masashi Noda
Kenro Tsutsumi
Kenichi Nakata
Daisuke Kaneko
Masashi Noda
Kenro Tsutsumi
Kenichi Nakata
Daisuke Kaneko