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Slide fastener

A technology for zippers and zipper tapes, applied in the field of zippers, which can solve problems such as unstable locking and worn locking claws

Active Publication Date: 2009-03-11
YKK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Depending on the positions and sizes of the locking claw 83 and the retractable claw 84, the locking claw 83 is significantly worn or the slider 81 cannot be locked stably.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0051] Figures 1 to 5 The slide fastener of 1st Embodiment of this invention is shown. figure 1 is the front view of the zipper. figure 2 is an exploded perspective view showing a slider provided on a slide fastener in a disassembled state, and image 3 It is an enlarged perspective view showing a pull piece and a locking claw of a slider enlarged. and, Figure 4 is the longitudinal section of the slider, Figure 5 is along Figure 4 Sectional view taken along the midline V-V.

[0052] Such as figure 1 As shown, the slide fastener 1 of the first embodiment includes a pair of left and right fastener chains 2 and a slider 9 .

[0053] The fastener chain 2 includes a pair of left and right fastener tapes 3 and coil-shaped elements 5 forming left and right element rows 4 attached to opposite tape-side edge portions of the fastener tape 3 . In this case, the coiled element 5 is formed of a monofilament of synthetic resin such as polyamide or polyester, and as Figure 5...

no. 2 approach

[0088] Figure 12 is an exploded perspective view showing a slider used in a slide fastener according to a second embodiment of the present invention in a disassembled state.

[0089] The slide fastener of the second embodiment is provided with a pair of left and right fastener chains (not shown) and a slider 51 . As the fastener chain in 2nd Embodiment, the fastener chain similar to 1st Embodiment is used.

[0090] The slider 51 of the second embodiment includes two components—a slider body 60 and a pull tab 70 rotatably mounted to the slider body 60 . The pull tab 70 has left and right locking claws 71 a , 71 b integrally formed for locking the slider 51 . These two components 60, 70 are formed into a predetermined shape by an injection molding device or an extrusion molding device using a thermoplastic resin such as polyamide, polyoxymethylene, polypropylene, polybutylene terephthalate.

[0091] In the slider main body 60, an upper piece 61 and a lower piece 62 are conne...

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PUM

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Abstract

A slide fastener (1) with a slider locking mechanism and without any elastic member comprising a slider body (10), a tab (30) attached to the slider body (10) rotatably, and a slider (9) having a locking pawl (31) formed integrally with the tab (30), wherein the locking pawl (31) has a pawl portion (37) fitted into between the elements (5), and the pawl portion (37) comprises: a first contact surface which, when the tab (30) is rotated after sliding operation of the slider (9) is ended, contacts with a first element (5a) of an element row (4) attached to a fastener stringer (2) to stop the tab (30)'s rotation temporarily; and a second contact surface which, when the slider (9) starts a forced movement in an element separating direction with the tab (30)'s rotation stopped, contacts with a second element (5b) to stop the slider (9)'s forced movement in a state where the tab restarts to rotate and the pawl portion (37) is fitted into between the elements (5).

Description

technical field [0001] The present invention relates to a slide fastener having a slider locking mechanism capable of automatically locking a slider without using any elastic member. Background technique [0002] As a conventional slide fastener used in clothes, there is known a type in which a slider having a locking mechanism is inserted through a fastener element row in order to prevent left and right fastener chains from being unintentionally opened when the slider is not operated. Generally, a slider with a locking mechanism has a locking claw that can be advanced into and retracted from an element guide channel formed between the upper and lower pieces of the slider; a leaf spring that is used to push the locking claw Enter the chain tooth guide channel. When the slider is not operated, the locking claw is pushed by the plate spring to engage a part (claw portion) of the locking claw with the element row, thereby stopping the movement of the slider. [0003] Incident...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A44B19/30A44B19/02
CPCA44B19/305Y10T24/2568A44B19/26A44B19/30
Inventor 岩濑裕一
Owner YKK CORP
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