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CN-224206295-U - Slider for concealed slide fastener

CN224206295UCN 224206295 UCN224206295 UCN 224206295UCN-224206295-U

Abstract

The utility model provides a slider for an invisible zipper, which reduces the contact stress between a flange and a zipper belt, is easy to pull upwards, and is difficult to clamp at the top end of the flange. The slider for the invisible zipper comprises a lower wing plate, a pair of left and right guide rails erected along the side edges of the lower wing plate in the left and right direction, left and right flanges extending from the upper ends of the pair of left and right guide rails in the direction approaching each other, a guide post, and a front mounting post and a rear mounting post protruding upward from the guide post at intervals in the front-rear direction, wherein the front end of the flange is positioned in front of the front end of the guide rail, and the starting point of the front curve part inside the flange is positioned behind the front end of the guide rail.

Inventors

  • Masaji sub wells
  • MIYAZAKI YOHEI

Assignees

  • YKK株式会社

Dates

Publication Date
20260508
Application Date
20250513
Priority Date
20240516

Claims (6)

  1. 1. A slider for a concealed slide fastener, comprising a lower wing plate (23), a pair of left and right guide rails (22) erected along side edges of the lower wing plate (23) in the left-right direction, left and right flanges (21) extending from upper ends of the pair of left and right guide rails (22) in directions approaching each other, guide posts (16) erected on the lower wing plate (23), and mounting posts (17, 18) arranged upward from the guide posts (16), The front end (37) of the flange is positioned in front of the front end (45) of the guide rail, A start starting point (38) of the flange inner side front curve portion (31) is located at the rear side of the front end portion (45) of the guide rail.
  2. 2. The slider for a concealed slide fastener according to claim 1, wherein, Regarding the dimensions W1 and W0 defined below, the ratio of W1/W0 is in the range of 25% to 35%, W0 half length of the full width of the slider in the left-right direction W1 is the width of the flange inner side front curve part (31) in the left-right direction.
  3. 3. The slider for a concealed slide fastener according to claim 1 or 2, wherein, The radius of curvature of the flange inner side front curve part (31) is in the range of 1.2 mm-2.0 mm.
  4. 4. The slider for a concealed slide fastener according to claim 1 or 2, wherein, The radius of curvature of the flange inner front curve (31) is larger than the radius of curvature of the flange outer front curve (32).
  5. 5. The slider for a concealed slide fastener according to claim 1 or 2, wherein, The shape of the front opening (13) side of the lower wing plate (23) is a shape of a substantially ellipse elongated in the sliding direction of the slider, the major axis of the substantially ellipse being oriented in the front-rear direction of the slider, and the minor axis being oriented in the left-right direction of the slider.
  6. 6. The slider for a concealed slide fastener according to claim 1 or 2, wherein, The length (D1) of the lower wing plate (23) existing on the front side in the front-rear direction compared with the front end part (45) of the guide rail is more than 30% of the length (D0) of the whole pull head in the front-rear direction.

Description

Slider for concealed slide fastener Technical Field The present utility model relates to a slider used in a concealed slide fastener in which, when left and right element rows are engaged, the engaged element rows are shielded from being observed from the outer surface side of the tape exposed to the outside of a fastener tape. Background As a slider used in a conventional concealed slide fastener, a slider as disclosed in patent document 1 or patent document 2 is known. As shown in fig. 12 and 13, the slider body 111 for the concealed slide fastener of patent document 1 includes a lower wing 123, a guide rail 122 standing along a side edge of the lower wing 123, left and right flanges 121 extending in a direction approaching from an upper end of the guide rail 122, a guide post 116, an attachment post 117 protruding upward from the guide post 116, a locking claw 118 attached to the attachment post 117, a holder (clamper) 114 attached to the locking claw 118, and a tab 113 attached to the holder 114. As shown in fig. 13, the concealed slide fastener is used in a state where the concealed slide fastener slider body 111, a pair of right and left fastener tapes 133 sewn to a cloth 131 for attaching a slide fastener, and fastener elements 132 sewn to the fastener tapes 133 are provided. The fastener tape 133 includes a pair of left and right tape main body portions 134, a fastener element attaching portion 135, and a tape folding portion 136 folded in a U shape along the tape longitudinal direction. With regard to the slider body 111 for a concealed slide fastener of patent document 2, fig. 14 is a perspective view of the slider body 111, and like fig. 12, includes a lower wing 123, a guide rail 122 standing along a side edge of the lower wing 123, left and right flanges 121 extending in a direction approaching from an upper end of the guide rail 122, a guide post 116, an attachment post 117 protruding upward from the guide post 116, a locking claw 118 attached to the attachment post 117, a holder 114 attached to the locking claw 118, and a tab 113 attached to the holder 114. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 10-234429 Patent document 2 Japanese patent laid-open No. 2006-102286 Disclosure of Invention However, in the concealed slide fastener slider described in patent document 1 and patent document 2, when the slider is pulled upward in a state where a strong lateral tension is applied to the fastener tape (see the operation state of fig. 15), the contact stress between the flange of the slider and the tape folded portion (the portion corresponding to the tape folded portion 136 of fig. 13) of the fastener tape becomes high, and there is a case where an operation feeling that the flange tip is caught by the fastener tape is generated. In particular, even when the fastener tape is made of a thin cloth or a cloth with a thick eyelet of yarn or a cloth of a knitted tape in order to reduce the weight and improve the air permeability of the fastener, the flange distal end may bite into the fastener tape, and further pulling up of the flange distal end may be difficult. It is considered that this phenomenon is easily caused by the size and protruding shape of the protruding portion when the flange 121 protrudes further forward than the guide rail 122 as in the slider shown in fig. 14. Further, repetition of the opening and closing operation in a state where the contact stress between the flange of the slider and the fastener tape is high may cause damage to the fastener tape or the like. Accordingly, the present utility model has been made in view of the above-described circumstances, and it is an object of the present utility model to provide a slider for a concealed slide fastener, which reduces contact stress between a flange of the slider and a fastener tape, and which is easier to pull upward than before, and which reduces the possibility that the flange tip is caught by the fastener tape or bites into the fastener tape. The present inventors examined the cause of the top end of the flange being caught or bitten into the fastener tape, and as a result, found that by changing the length of the guide rail and the flange and changing the shape of the flange, the catching and biting of the fastener tape in the middle of pulling up the slider can be reduced. Specifically, the slider for a concealed slide fastener according to the present utility model comprises a lower wing plate (23), a pair of left and right guide rails (22) standing along side edges of the lower wing plate (23) in a left-right direction, left and right flanges (21) extending from upper ends of the pair of left and right guide rails (22) in directions approaching each other, a guide post (16) standing on the lower wing plate (23), and mounting posts (17, 18) provided upward from the guide post (16), The front end (37) of the flange is positioned in front of the front end (45) of the guide rail, A