Title:
AXIAL LINE ADJUSTING SCREW FASTENER
Document Type and Number:
WIPO Patent Application WO/2023/277424
Kind Code:
A1
Abstract:
The present invention relates to a screw fastener capable of adjusting an axial line. The axial line adjusting screw fastener of the present invention comprises: a normal screw portion having a plurality of normal screw threads formed on a screw post having a front end portion and a rear end portion; and a lead screw portion having at least one lead screw thread which is formed between the front end portion of the screw post and the plurality of normal screw threads and has a lead screw thread outer diameter that is equal to or less than a pitch diameter of the normal screw thread, wherein the at least one lead screw thread includes a lead screw thread profile having a rear end straight portion having a rear end gradient of a certain angle, a front end straight portion having a front end gradient that is less than the rear end gradient, and a central curved portion formed in a slow curve coming into contact with the front end straight portion and the rear end straight portion. The axial line adjusting screw fastener of the present invention adjusts an axial line through a fastening process, even if axial lines do not accurately match when fastening with a counterpart female screw.
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Inventors:
LEE JONG YOON (KR)
Application Number:
PCT/KR2022/008732
Publication Date:
January 05, 2023
Filing Date:
June 20, 2022
Export Citation:
Assignee:
YOUN YOUNG TECH CO LTD (KR)
International Classes:
F16B35/04; F16B33/02
Foreign References:
| JP2018189244A | 2018-11-29 | |||
| KR20100055462A | 2010-05-26 | |||
| JP2001082430A | 2001-03-27 | |||
| US20020076302A1 | 2002-06-20 | |||
| US20160281762A1 | 2016-09-29 | |||
| KR102383042B1 | 2022-04-08 |
Attorney, Agent or Firm:
HANA IP LAW FIRM (KR)
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