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Patent Searching and Data


Title:
CONCEALED SLIDE FASTENER
Document Type and Number:
WIPO Patent Application WO/2021/210160
Kind Code:
A1
Abstract:
Provided is a concealed slide fastener, wherein an insert pin can be prevented from coming out of a box even if a strong lateral pulling force is applied to the back end sections of left-right tapes. The concealed slide fastener comprises: a pair of pieces of tape (6) that are folded into a U-shape so that side edge sections, which oppose each other in the left-right direction, oppose each other in the up-down direction; a pair of element rows (7) that are independently fixed to a bottom surface side of the pair of pieces of tape bent into a U-shape; and an opening tool (4) including an insert pin (10) and a box (11) that are independently fixed to back end sections of the pair of pieces of tape. The insert pin comprises: an insert pin body (12) that is fixed to the pieces of tape (6) and that extends in the front-back direction at the back of the element rows; and a tooth (17) that meshes with a back end element (7a) of the element rows, and that protrudes from the insert pin body and extends to the front. The box comprises an accommodation part (29) that accommodates a back section of the insert pin body such that the back section can be inserted and retracted in the front-back direction. The tooth is retained at a position which is deviated from a space between an upper leg part and a lower leg part in a normal case in which the opening tool is closed, and enters the space between the upper leg part and the lower leg part if a lateral pulling force is applied to the opening tool.

Inventors:
OKAMOTO TOSHIKUNI (JP)
OKUBO HIDEKI (JP)
Application Number:
PCT/JP2020/016857
Publication Date:
October 21, 2021
Filing Date:
April 17, 2020
Export Citation:
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Assignee:
YKK CORP (JP)
International Classes:
A44B19/38
Domestic Patent References:
WO2011135706A12011-11-03
WO2010109656A12010-09-30
WO2014192106A12014-12-04
Attorney, Agent or Firm:
MINAMI PATENT OFFICE (JP)
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