DE1047731B - Coil spring zipper - Google Patents

Description

The invention relates to a scroll spring zipper each with a low-elongation carrier tape fastened locking pins made of un> twisted, ■ counter-rotating, parallel multiple coil springs, whose axes are deflected laterally parallel to this plane in the coupled state from the closure are.

Attempts have been made for a long time to replace the individual link fasteners, which are almost exclusively in use Manufacture zippers from wire screws, partly from economic, partly from technical. Establish. Also the joining of coupling elements from wire screws by means of a Slider to the necessary for practical use either by frictional engagement or positive engagement. Achieving hold has long been known.

The previously known undeformed and. deformed single and multiple coil spring locks satisfied with regard to the economic efficiency of the production, the security against breaking and with regard to the Closure not sufficient.

In use, the usual coil spring showed tear fasteners Signs of fatigue, as it was not possible with the previous manufacturing process, to produce the individual screws with the necessary precision and stability. As far as the Manufacture of undeformed double or multiple wire screws is concerned, these were previously individually wound and "screwed" together. Since an extremely high accuracy for the Windebzw. Winding process is required to pause a precise slope, must be very slight Failure to merge multiple defective single wire screws a closure member and the joining of two such closure members to form the closure itself extremely unfavorable.

"Screwing" individual wire screws into one another could therefore not lead to the desired success to lead.

So far, metal wire screw closures have only been manufactured to a small extent, as the starting material proved unsuitable for the use of the closures, especially when it turned out deformed coil spring zippers.

With deformed single coil springs you had to use relatively soft material to make it to be able to deform into wire screws. The wire screws had an elastic that was too small Area and were therefore extremely sensitive to kinking and bending; they were therefore soon unusable. If the wire diameter is too small: rchmesser the holding force was too low; in the case of too great a coil spring lock

Applicant:

Stahlwerk Kabel C. Pouplier jr., G. mb H. _r Hagen (Westf.) - Kabel

Dr.-Ing. Otto Cromberg, Dipl.-Ing. Gustav Pritzbuer,

Hans Mayer, Hagen (Westphalia),

and Walter Winterhoff, Wermelskirdien,

have been named as inventors

Wire diameter, the permanent deformation without elastic after-effect was too difficult.

The technically perfect design of wire screw zippers has so far also failed due to the high degree of accuracy required when deforming wires of high strength and elasticity with regard to maintaining the smallest tolerances for wire diameter, wire screw diameter and incline had to be demanded. The previously known methods were not sufficient here from ensuring these accuracies. The production became very expensive, but still remains imprecise, and flawless closures with sufficient adhesive strength could not be guaranteed, so that also multi-color feather zippers are economical could not be established.

The object of the invention is now to provide a coil spring zipper each with a fastener halves attached to a low-elongation carrier tape undeformed, counter-rotating, parallel multiple coil springs, their axes in the coupled state from the closure plane laterally parallel to these are hinged to improve so that the closure is easy and precise to manufacture and also with works flawlessly under the highest stresses,

This object is essentially achieved in that the axes of the coupled individual coil springs are asymmetrical to the breech axis, -wherein the slope of all individual coil springs, related each on a surface line of a helical spring enveloping, in the uncoupled state in itself is known to be the same and the wire diameter and outer coil diameter of the individual coil springs each closure half are the same in a manner known per se, and the wire diameter

80? 727/1

Claims (1)

1 U * t / YO 1 and / or the outer winding diameter of the individual, wire thicknesses of all individual screws is greater than that coil springs of one locking half opposite ' ^: pitch. different from those of the other half of the lock due to the use of rustproof material are and where the sum of the wire thicknesses of all for the production of the coupling elements and a subsequent Single screws larger than the pitch. 5 wearable remuneration of the spiral spirals The zipper according to the present invention only secures compliance with these / regulations the flawless and long-term function of all requirements in terms of washability, Deformed multiple wire screw zipper. Kink resistance and ironing resistance. An advantageous embodiment of such a zip fastener, for example, consists of springs in the individual screw shapes of the closure halves in a manner known per se from corrosion. Show it solid, after molding by a post-treatment Fig. 1 to 6 are schematic representations tension-free steel wire with round double helical springs, profile exist. In the execution according to Figs. 1 and 2 show This inventive design of the 15 both winding of contra-rotating propellers double zippers is an equal slopes coil springs at different ratios · J ₁ and J ₁ 'and possible adaptability of the liability of the zipper ^ J. ₂ and J ₂ ', and the winding outs are also achieved in an advantageous manner. diameter J ^ ₁ and sp ' as well as Sp ₂ and sp ₂ ^r and also The closure members are the pitch angles Ct ₁ and Ct ₁ 'as well as a ₂ and a ₂ under- undeformed, counter-rotating multiple wire screws 20 are equal to each other. same slope, which in a known manner by means of only the wire sizes d ₂ and d ₂ differ from the a slide "coupled" or uncoupled. Wire sizes d _x and U ₁ ' from. The two connections to be coupled can remain with the closure according to FIGS. 3 and 4 Schltißhälften e.g. as a left-handed double wire - both the pitch and the wire size of the screw both locking halves together with a right-hand double or 25 single screws Multiple wire screw can be formed. The same. Only the wire screw outside diameter The coil springs of the closure halves each have " ^: Sp ₂ and sp / as well as the pitch angles ct ₂ and a ₂ same wire size and same or different diameters from wire screw diameters J ^ ₁ and borrowed pitch angle or coil diameter. Sp ₁ 'of the other link and the angle of inclination The lock, the closure members is based on 30 Ct ₁ and Ct ₁ 'from. In Figs. 5 and 6 a form fit and partly due to friction due to the closure is shown, in which the gradients J ₁ elastic deformation of the laterally deflected and J ₁ 'as well as J ₂ and J ₂ ' are the same. Just the wire turns. The combination of the coupling elements screw outer diameter Sp ₂ and Sp ₂ must, however, take place in a regularity that differs from J ^ ₁ and Sp ₁ ', as well as the wire sizes d ₂ and on a certain ratio between pitch d ₂ of d _t and d _t ^r . angles, wire sizes and pitch is based. For the entirety of the combination shown for usable zip fasteners made of wire possibilities, the principle applies that the slopes are the achievement of the desired adhesion of all that merge to a fastener of decisive importance. It must be sufficient for single screws, based on a surface line, to match the intended use in 40 helical spring envelopes. In order to satisfy every case, so that in the practical required liability after the consumption of the closure there is no need to break open the closing links through the slide. However, the adhesion must also not be too strong the wire thicknesses with fixed wire screws, so that the slide remains movable in a certain comparison to the slope without large compression diameters and ': the wire screws stand 45 hai tnis that in the requirement: d _t + d _± '+ d ₂ + d ₂ do not twist, so that the bands with which the is greater than s> ζήτα expression comes, that is, the sum of wire screws are connected, are not in the wire gauges that must be a certain amount larger slide channels can jam. That should also be as the slope (pitch). The extent of this coupled fastener remain pliable. The difference depends on the intended use. The individual coil springs move 50. If you need strong adhesion, e.g. B. when when coupling the closure members on the side and closing cement sacks, one becomes the difference block themselves thereby. The degree of adhesion between the sum of the wire sizes and the pitch may have to hold up in kilograms per centimeter through tensile tests than with the closure of light ones meter lock length can be determined. The measure of clothing. the adhesion, which is based on the locking of the individual 55 One can either change the sum of the wire sizes of the screw turns in the coupled state or the pitch or both to the ge-closure members, must therefore, depending on the desired greater or lesser adhesion to the intended purpose , within certain range. But you can also be variable the limits of one closure half. Possibilities for this exist in relation to the wire screw diameter and wire by changing the wire thickness, pitch thicknesses different from the other locking half angle and the pitch, whereby each variation develops internally and thus further possible variations can be achieved with both locking halves to the same extent, but with chains. Strong wires increase the adhesion with the same change of the mentioned factors in the remaining wire screw diameter and the same one locking half different from the other slope,
can be carried out. Only the slope of the 65 Coupling elements, based on the envelope, must always be patent claims: remain the same for both closure halves. 1. Coil spring zipper with on each one The changes in the individual factors must however, go within the limits of the final halves of undeformed, opposing, in result from the requirement that the sum of the 70 parallel multiple coil springs whose 1 Uft / IDl Axes in the coupled state are deflected laterally parallel to the locking plane from the locking plane, characterized in that the axes of the coupled individual coil springs are asymmetrical to the locking axis, the slope of all individual coil springs, based on a surface line of a helical spring enveloping, in the uncoupled state in per se known Way is the same and the wire diameter and outer coil diameter of the individual coil springs each closure half are the same in a known manner and where the wire diameter and / or the outer coil diameter of the individual coil springs of one closure half compared to those of the other closure half are different and the sum of the Wire thickness of all individual screws is greater than the pitch. 2. Zipper according to claim 1, characterized in that the individual coil springs in on known way of corrosion-resistant steel wire with a round profile that has been made free of residual stress after shaping by post-treatment exist. Considered publications:
German Patent Nos. 697 377, 887 936, 735, 40 961, 141 506, 226 326, 884 482; U.S. Patent Nos. 2,299,230, 2,504,079, 643,432; Austrian patents No. 106 300, 754 1 sheet of drawings © 80Ϊ 727/1 12.58