Title:
FEMALE SCREW MEMBER
Document Type and Number:
Japanese Patent JP2017203473
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a female screw member capable of suppressing occurrence of rust in a female screw hole.SOLUTION: In a first strut member 54, a longitudinal groove 90 is formed from an opening of a female screw hole 84 in a direction parallel with a central line of the female screw hole 84, a length L2 in a longitudinal direction of the longitudinal groove 90 is made longer than a length L1 in a central line C1 of a female screw 82, and a groove bottom of the longitudinal groove 90 is formed deeper than a trough of the female screw 82. Consequently, when surface treatment is performed as rustproof processing, since corrosive solution used in, for example, defatting and acid washing of preprocessing is effectively flown out to the outside of the female screw hole 84 through the longitudinal groove 90, the corrosive solution can be prevented from being accumulated on an inner peripheral surface or a bottom part 80a of the female screw hole 84.SELECTED DRAWING: Figure 4
Inventors:
KOMODA KAZUYASU
Application Number:
JP2016094182A
Publication Date:
November 16, 2017
Filing Date:
May 09, 2016
Export Citation:
Assignee:
HOSEI BRAKE IND
International Classes:
F16B37/00; F16B33/06
Attorney, Agent or Firm:
Haruyuki Ikeda
Kojiro Ikeda
Kojiro Ikeda