Title:
FASTENER AND FLUID CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2022184409
Kind Code:
A
Abstract:
To provide a fastener which can alleviate a concentration of stress to a screw part.SOLUTION: A fastener 4B of a hydraulic port being a fastener 4B for fastening a union 6 in which a male screw 51 is formed, and a female member 5 in which a female screw 51 is formed, comprises an escape part 52 which is arranged while adjoining a terminal end part of the female screw 51 at a side opposite to a side to which the male screw 61 is inserted, and whose inside diameter is larger than an outside diameter of the male screw 61 in the female member 5. The escape part 52 comprises a cutup part 521 which is linearly cut up while forming an angle of 90° or smaller with respect to an insertion direction of the male screw 61 from the terminal end part 51E of the female screw 51. A tip part 61E of the male screw 61 fastened to the female screw 61 protrudes with respect to the terminal end part 51E of the female screw 51.SELECTED DRAWING: Figure 2
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Inventors:
NAGAYAMA HIROMI
SHIBATA MASARU
NIMATA KEIGO
TANAKA HISAAKI
SHIBATA MASARU
NIMATA KEIGO
TANAKA HISAAKI
Application Number:
JP2021092235A
Publication Date:
December 13, 2022
Filing Date:
June 01, 2021
Export Citation:
Assignee:
NABTESCO CORP
International Classes:
F16K27/00; B64C1/00; B64C13/36; E02F9/00; F16L15/00
Attorney, Agent or Firm:
Morishita Kenki