GB2194283A

GB2194283A - Slider for slide fastener

Info

Publication number: GB2194283A
Application number: GB08716861A
Authority: GB
Inventors: Hiroo Minami; Syuji Yoshikawa
Original assignee: Yoshida Kogyo KK
Current assignee: YKK Corp
Priority date: 1986-07-18
Filing date: 1987-07-17
Publication date: 1988-03-02
Anticipated expiration: 2007-07-17
Also published as: ES2006783A6; IT8767618A0; DE3723766C2; DE3723766A1; AU7539587A; KR890001801Y1; FR2601565A1; AU574293B2; GB8716861D0; FR2601565B1; KR890002009U; JPS6317609U; GB2194283B; IT1211213B

Description

GB2194283A 1 SPECIFICATION to said support lug, said pivot comprising a

tubular spring.

Slider for slide fastener It is believed possible by means of the present invention to provide an improved slider This invention relates generally to slide fasten- 70 for a slide fastener which is simple in con ers and more particularly to a slider therefor struction and easy to assemble with its asso which is reciprocatingly movable to open and ciated pull tab.

close the slide fastener. It is further believed possible by means of It has been the common practice to assem- the present invention to provide a slide fas- ble sliders with their associated pull tabs, not 75 tener slider having structural features to enable immediately upon formation of slider bodies or assembling the slider with its pull tab with upon mounting of the same on slide fastener utmost ease and with increased positioned stringers, but at the time of shipment of slide stability and hence ensure prolonged service fastener stringers, or at the time of sewing life.

the stringers for example on garments, or at 80 The invention will be described by way of any convenient time during the course of mar- example with reference to the accompanying keting. drawings, wherein like references refer to like A typical conventional method of applying a parts unless the context requires otherwise pull tab is shown in Figure 9a of the accom- and wherein:

panying drawings, in which a pull tab 100 is 85 Figure 1 is a perspective view, partly ex- provided with clamping jaws 101 which are ploded, of a slider embodying the invention; closed over a connector ring 102 pivotally Figure 2 is a partly sectional, plan view of a connected to a trunnion 103 on the slider portion of the slider of Figure 1; body 104. Another method is, shown in Figure Figure 3 is a perspective, partly exploded 9b, in which the trunnion 103 is open apart at 90 view of a modified form of slider embodying one end widely enough to receive the pull tab the invention; having an aperture 105 and the trunion Figure 4 is a partly sectional, plan view of 103 is then closed through the aperture 105 the slider of Figure 3; against the upper surface of the slider body Figure 5 is a side view of two of the sliders 104. 95 of Figure 3 in use on a slide fastener; A somewhat sophisticated slider is shown Figure 6 is a partly sectional, plan view sim- in Figure 9c which is disclosed in Japanese ilar to Figure 2 but showing a different form; Utility Model Laid-Open Publication 57- Figure 7 is a perspective view of a modified 113015, the connector ring 102 having a form of pull tab; lateral pin 106 spring-biased as at 107 into an 100 Figure 8 is a perspective view of a modified opening 108 in a hinge portion 109 of the form of pin spring; pull tab 100. Figure 9a is a side view of a prior art slider;

The method of Figure 9a has a drawback in Figure 9b is a side view of another prior art that the pull tab 100 would fall from the slider slider; and unless the jaws 101 are pressed together ac- 105 Figure 9c is a partly sectional, plan view of curately with sufficient pressure. The method still another prior art slider, of Figure 9b also has a difficulty in that too Referring now to the drawings and firstly to small a pressure in closing the trunnion 103 Figure 1, there is shown a slider 10 for a causes the pull tab 100 to slip out, whilst too slide fastener which comprises a slider body large a pressure wo9ld deform the slider body 110 11 including upper and lower wings 12, 13 leading to sluggish movement of the slider. each having side flanges 14 and joined at their The last-mentioned method illustrated in Figure front end by a neck (not shown) so as to 9c involves complicated pull tab connection define therebetween a substantially Y-shaped structure, hence expensive manufacture and guide channel 15 for the passage therethrough time-consuming procedure for assembling the 115 of a pair of fastener stringers. The slider body pull tab on the slider. 11 also includes a support lug 16 secured to According to the present invention there is and extending externally from the upper wing provided a slider for a slider fastener, com- 12, and a pull tab connector 17 pivotally con prising: nected through an aperture 18 to the support (a) a slider body including upper and lower 120 lug 16. The pull tab connector 17 has longitu- wings connected at their one end to define a dinal side bars 17a, 17b interconnected by substantially Y-shaped guide channel for the front and rear transverse bars 17c, 17d at passage of a pair of fastener stringers of the opposite ends of the connector 17 and ears slide fastener; 17e, 17f protruding from the rear bars 17d, (b) a support lug disposed on said upper 125 the ear 17e having a through- hole 17e' and wing; the ear 17f having a blind hole 17f'.

(c) a pull tab for pulling said slider body A pull tab 19, generally rectangular in along the paid of fastener stringers to open shape, is provided with a tongue 20 having a and close the slide fastener; and through hole 21 and adpated to be received (d) a pivot pivotally connecting said pull tab 130 between the ears 17e, 17f of the connector 2 GB2194283A 2 17, the pull tab 19 being manipulated to so that the edges overlap, with a varying move the slider 10 to open or close the slide thickness progressively reducing from midpor fastener in a manner well known in the art. tion toward opposite ends. Further, the tubular Designated at 22 is a tubular spring which spring 22 may be a multi-layer form com- may be formed from a metal, plastics, natural 70 posed of a plurality of tubular layers of differ or artificial leathers, or other resilient material ent materials arranged one over another and into a cylindrical tube or roll which has in its laminated together. with a slit along the whole free form a diameter slightly larger than the length of the spring through all the layers.

holes 17a, 17f' and 21, a corrugated longitu-

Claims

dinal slit 23 being provided throughout its 75 CLAIMS length to render the

tube 22 resilient. The 1. A slider for a slide fastener, comprising:

tubular spring 22 is utilized to connect the pull (a) a slider body including upper and lower tab 19 to the slider body 11 to provide a wings connected at their one end to define a complete slider product at any convenient substantially Y-shaped guide channel for the time and location. This is done simply by in- 80 passage of a pair of fastener stringers of the serting the tubular spring 22 through the holes slide fastener; 17e', 17f' and 21 that are registered with one (b) a support lug disposed on said upper another, until the leading end of the tubular wing,; spring 22 rests in the blind hole 17f' as (c) a pull tab for pulling said slider body shown in Figure
2. 85 along the pair of fastener stringers to open Figures 3- and 4 show a modified form of and close the slide fastener; and slider 10 which is devoid of the pull tab con- (d) a pivot pivotally connecting said pull tab nector 17 and which has instead an elongated to said support lug, said pivot comprising a pull tab 24 with bifurcated longitudinal bars tubular spring.

24a, 24b, one of which has a through-hole 90 2. A slider according to claim 1, wherein 24a' and the other a blind hole 24b'. The said pull tab has a pair of axially aligned holes tubular spring 22 is inserted through the hole through which said tubular spring is inserted, 24a' past the aperture 18 and received into and said tubular spring has in its free form a the blind hole 24b' thereby connecting the pull diameter slightly larger than the diameter of tab 24 to the slider body 11. A pair of sliders 95 said holes.

are illustrated in use on a slide fastener
3. A slider according to claim 2, wherein indicated by a phantom line F in Figure 5, in said tubular spring comprises a cylindrical tube which they are brought together head-to-head or roll of a resilient material.

with the pull tab 24 on one slider flipped over
4. A slider according to claim 1, 2 or 3, flat on the other slider, which represents a 100 wherein said slit of said tubular spring has a typical mode of application for example on a corrugated shape, bidirectionally openable bag. A padlock 25 is
5. A slider according to claim 1, 2 or 3, used in such instance to lock the sliders 10. wherein said slit of said tubular spring is lin- Figure
6 shows another modification con- ear.

trastive to the slider 10 of Figures 1 and 2 in 105 6. A slider according to claim 1, wherein a that the ears 17e, I 7f are provided on the connector is pivotally connected to the sup pull tab 19 and the tongue 20 on the pull tab port lug and wherein the pivot pivotally con connector 17. The pull tab 19 of Figure 6 has nects the pull tab to the connector.

a pair of through holes 24a', 24b', instead of
7. A slider according to claim 6, wherein the through'and blind holes 17e', 17f' of Fig- 110 the pull tab has a pair of axially aligned holes ure 4, for receiving the tubular spring 22. through which the tubular spring is inserted.

Whereas the pull tabs of Figures 1 to 6 are
8. A slider according to claim 6, wherein formed (conventionally) as by casting, pull tab the connector has a pair of axially aligned 19 of Figure 7 is formed by folding a blank holes through which the tubular spring is in double around a rod (not shown) which forms 115 serted.

through hole 26.
9. A slider according to any preceding Figure 8 shows a modified form of tubular claim, wherein the tubular spring has a slit spring 22 which has a slit 23 which is linear along its entire length.

instead of corrugated.

Alternatively, the tubular spring 22 may ta- Published 1988 at The Patent Office, State House, 66/71 High Holborn, London WC 1 R 4TP. Further copies may be obtained from per along Part of its length or along its entire The Patent Office, Sales Branch, St MaryCray, Orpington, Kent BR5 3RD.

length. Otherwise the tubular spring 22 may Printed by Burgess & Son (Abingdon) Ltd. Con. 1/87, be only partly reduced in diameter by sinking tubing, that is, drawing tubing through a die or passing it through rolls without the use of a tool in the bore to control the inside dia meter (McGraw Hill Dictionary of Scientific and Technical Terms).

In another alternative form, the tubular spring 22 may be wound one and half times,