WO1995024137A1

WO1995024137A1 - Slide for a zip-fastener

Info

Publication number: WO1995024137A1
Application number: PCT/EP1995/000826
Authority: WO
Inventors: Manfred Rottmar; Markus Schuster; Michael SCHÖFLINGER
Original assignee: M+S Werkzeugbau Gesellschaft Mbh
Priority date: 1994-03-07
Filing date: 1995-03-06
Publication date: 1995-09-14
Also published as: DE4411144A1; AU1948895A

Abstract

A slide (1) for a zip-fastener comprises a slide member (6) and a gripping member (8) which is inserted in a stirrup member (7) of the slide member (6). The underside of the free end of the stirrup member (7) bears a locking part (15) which engages between the zip-fastener members in order to secure the zip-fastener against undesired opening. Formed in the side edge areas of the upper and lower faces of the slide member are guide ribs (23, 24) whose free ends, pointing in the closure direction (27), taper to form fingers (30, 31). When the zip-fastener tapes (2, 3) are subject to particularly great stresses, these fingers (30, 31) each engage in the directions of the arrows (33, 34) between two zip-fastener members (4), so increasing the locking effect.

Description

Slide for a zipper

The invention relates to a slide for a zipper, consisting of a slide body formed from the upper shield, lower plate and slide wedge and a bracket formed thereon for hanging in a handle provided for actuating the slide body, the bracket connecting at one end to the slide body and freeing it cantilevered and overlaps at its free end a self-locking brake or lock, and wherein the free end portion of the bracket engages under the upper shield of the slider body with a hook-like part and has the locking part on its portion directed against the lower plate, and wherein the slider body together is made in one piece from plastic with the bracket, with the hook-like part formed on the bracket and with the locking part, and wherein guide webs are formed on the lateral edge regions of the upper shield and the lower shield, on which the verb edge areas facing away from the end areas of the zipper can be supported.

Zippers for zippers have already become known in many versions. There has also already been the possibility of providing an automatic brake or lock in order to prevent a closed zipper from opening again automatically. For this purpose, additional spring parts are used in the area of the bracket provided on the slider body, which are raised when the handle is tightened, but which engage in or between the members of the zipper when the handle is released. In these known designs, several machining or assembly processes are required in order to integrate these additional, moving parts into the slide body. In a slide for a zipper of the type mentioned (DE-OS4139480), the possibilities are already significantly improved, since a corresponding spring force inherent in the material is used by the integral design of the bracket together with the slide body. There is therefore no need for any additional resilient parts or additional post-processing and assembly work. Both in this version and in all other known versions, the locking or braking effect is aimed solely at a single locking part, with the possibility of the locking part being raised, especially when the zipper is subjected to greater force.

The invention has therefore set itself the task of significantly improving the effectiveness of a lock against an automatic or force caused by the zipper itself opening.

According to the invention, this is achieved in that the guide webs formed on the lateral edge regions of the upper shield and the lower shield are tapered at their free ends directed in the closing direction of the zipper to form fingers which engage between two zipper members.

ERSATZBLÄΠ ^" (RULE 26) So if a zipper is pulled apart at the upper ends by the action of force, then the locking part integrated in the slider body or formed on the bracket causes a first effective lock. However, if a greater force then acts and there is therefore a risk that the locking part will lift off, the free ends of the guide webs designed according to the invention bring about a second lock, since precisely these free ends designed as fingers engage between two zipper members. As a result, two locks which are effective at a distance from one another are erected, so that an extremely high load can be exerted on a zipper without the slide unintentionally moving along the zipper in the opening direction.

With the measures according to the invention, a safeguard against an automatic opening or a opening of a zipper caused by the action of force can be achieved that goes far beyond the required values.

A special embodiment is when the free ends of the guide webs on the two edge regions of the slider protrude to different extents in the closing direction of the zipper, the guide webs of top plate and bottom plate facing each other in pairs at an edge area having the same length.

It has created the possibility that both zipper parts and also the locking part formed on the bracket itself contribute to a secure lock without affecting torques on the slide. In this context in particular, it is advantageous if the free ends of the guide webs on the two edge regions of the slider project the dimension of half the width of the zipper members offset differently in the closing direction of the zipper. The fingers formed on the free ends of the guide webs are then offset from one another in the direction of displacement of the slide such that they can engage in the respectively assigned areas between two zip fastener members. This precise three-point lock brings with it essential advantages, especially when it comes to extremely high forces acting on the zipper parts.

In the context of the invention, it is expedient that the mutually directed guide webs on the lower shield and on the upper shield are of the same height. There is space between the upper shield and the lower shield for the passage of the zip fastener tapes, with the zip fastener members projecting beyond the tapes on both sides. The zipper members on both sides of the tapes are then properly gripped precisely when a lock is required with special force, so that they cannot be moved transversely to the tapes by a one-sided force.

In a special embodiment, it is provided that a kink edge is formed on at least one pair of guide webs on the upper shield and on the lower shield at the transition to the tapered end. It is caused just under great force that the still between the guide bar and the

SPARE BLADE (RULE 26) Slide wedge of the slide body located zipper member can also contribute to increasing the locking effect. It therefore not only engages the corresponding end of the guide webs between two zipper members, but it also causes the one zipper member to additionally lock against the finger formed on the free end of the guide webs.

In this context, there is an even greater impact for such an additional possibility of engagement if the finger adjoining the folded edge at the free end of the guide webs is inclined at an acute angle to the central axis of the slide relative to the course of the remaining area of these guide webs.

So that there is a proper blocking effect against loosening of the zipper for each .art of zipper members and for every type of size of a zipper or of the size of a slide, it is further proposed that the distance between the fingers formed at the free ends of the guide webs from one a bracket of the slide formed locking part is determined depending on the width and the number of zipper members.

The measures according to the invention thus create a possibility of significantly improving the blocking effect of the slide in the case of zippers against unintentional opening, without being complicated by the structural design and, furthermore, the optimal manufacturing possibility being retained as a one-piece plastic part.

Further features of the invention and special advantages are explained in more detail in the following description with reference to the drawing. Show it:

Figure 1 shows a zipper with slider in plan view, the upper portion of the zipper straps being pulled apart.

2 shows a section through the slider with a schematic representation of the zipper members just passing through the slider;

3 shows a slide in front view;

Fig. 4 shows a slide in side view, partially cut away.

In Fig. 1, a zipper 1 is shown, which is formed from two bands 2 and 3, which carry the zipper members 4 at their mutually facing edge regions. The zip fastener elements 4 can be produced in different versions, whereby in addition to screw wire zippers and metal zippers, plastic zippers are used in particular. The slide fastener elements 4 are suspended or separated from one another by means of a slide 5. The slide 5 consists essentially

SPARE BLADE (RULE 26) borrow from a slide body 6 and a handle 8 suspended in a bracket 7 on the slide body 6

The slide body 6 consists of an upper shield 9, a lower shield 10 and a slide wedge 11 connecting these two shields to one another. The bracket 7 is arranged on the slide body 6, on which the handle 8 is suspended. As will be explained in more detail, a brake or lock that inhibits the automatic displacement of the same is integrated in the slide body 6.

The bracket 7 with one end 12 is integrally connected to the slide body 6. The bracket 7 projects freely over the slide coiper 6, a hook-like part 14 being provided at the free end region 13 of the bow egg 7, which engages under the upper shield 9. A blocking part 15 is provided on the section directed against the lower plate 10.

The upper shield 9 of the slide body 6 has a V-shaped or U-shaped incision 16 in the engagement area of the free end area 13 of the bow egg 7. The hook-like part 14 is directed against the firmly connected end 12 of the bow egg 7 and engages under the upper shield 9 accordingly. The hook-like part 14 and a stop surface 17 assigned to this hook-like part 14 on the underside of the upper shield 9 are at a distance A from one another which corresponds at least to the stroke required to trigger the locking part 15.

The locking part 15 is approximately wedge-shaped, the highest elevation of which is designed in the direction of the freely projecting end region 13 of the bow egg 7.

The bracket is T-shaped in cross-section over at least part of its length, but at least over part of its free end regions 12 and 13, the projecting web 18 being directed toward the upper shield 9. The cross section of the Bugeis 7 can of course also be strengthened in other ways. It would also be conceivable to provide, for example, a triangular or a trapezoidal cross section, in which case a narrow side or a tip is directed against the upper shield 9.

The hook-like part 14 projecting approximately parallel to the upper shield 9 is provided with wedge-shaped side boundaries towards the free end.

The bracket 7 engages in an eyelet 20 of the handle 8, so that the bracket 7 and thus also the hook-like part 14 and the locking part 15 are raised accordingly when the handle 8 is tightened in the closing direction of the zipper.

The slider body 6 is made together with the bracket 7, with the hook-like part 14 formed on the bracket, and the locking part 15 in one piece from plastic. The plastic is elastically bendable at least to the extent that the bracket 7 is resiliently bendable in the possible adjustment range between the rest position (braking position) and the shift position by tightening the handle 8. A particularly advantageous measure is that the Slider body 6 is made together with the handle 8 in an injection molding process. It is of course also conceivable to produce the slide body 6 from a one-piece plastic part and then to hang the handle 8 in, but this requires an additional assembly operation, which of course increases the manufacturing costs of a slide body. A slide with integrated brake (locking slide) made of plastic can therefore be produced in one production process, that is to say in an injection molding cycle and without subsequent assembly work.

Guide webs 21, 22, 23, 24 are formed on the lateral edge regions of the upper shield 9 and the lower shield 10, on which the edge regions 26 facing away from the connecting end regions 25 of the zipper members 4 can be supported. The zipper members 4 are thus passed between these guide webs 21, 22 or 23, 24 and the central slide wedge 11, in order thereby to hang the zipper members 4 into one another or to detach them from one another.

The guide webs 21, 22 and 23, 24 formed on these lateral edge regions of the upper plate 9 and the lower plate 10 are tapered at their free ends 28, 29 directed in the closing direction 27 of the zipper. These free ends 28, 29 thus form fingers 30, 31 engaging between two zipper members 4.

The free ends 28, 29 on the two edge regions of the slider body 6 project to different extents in the closing direction 27 of the zipper. The guide webs 21, 23 or 22, 24 of the lower plate 10 and upper plate 9, which are directed towards each other in pairs at an edge area, each have the same length.

These free ends of the guide webs 21, 23 and 22, 24 are offset by the dimension V of the half-center distance M of the zipper members, so that the free ends 31 of the guide webs 22, 24 project further in the closing direction 27 than the free ends 28 of the guide webs 21, 23.

For locking the slide body 6 against the closing direction 27, the locking part 15 thus engages in a recess 32 between two zipper members 4 and thus forms a first lock. If the webs 2 and 3 of the zipper are pulled apart in the direction of the arrows 33 and 34, that is if a force is exerted on the zipper, which in the usual way leads to the zipper being opened, then a further lock engages in addition to the locking part 15. The fingers 30, 31, that is to say the tapered free ends 28, 29 of the guide webs 21, 23 and 22, 24, respectively, then pass between two zipper members 4 and thereby form a second locking station, which on the one hand relieve the force acting on the locking part 15 and on the other hand ensure that the zipper is securely locked. Experiments have shown that the zipper members 4 would be torn off the belts 2 and 3 before any displacement of the slider body 6 and destruction of parts of this slider body. In this way it is seen from the slide of the zipper

SPARE BLADE (RULE 26) given optimal security, since the slider itself can only provide security as far as the zipper members 4 on the belts 2 and 3 are sufficient.

The mutually directed guide webs 21, 23 and 22, 24 on the lower plate 10 and on the upper plate 9 are of the same height, so that the free ends 28, 29 and thus the fingers 30, 31 on both sides of the belts 2 and 3 the just protruding on both sides Zipper members 4 can capture.

As can be seen in FIGS. 1 and 2, at the transition between the guide webs 21, 23 to the tapered end 28 and thus to the finger 30, a kink edge 35 is formed, which additionally tilts the zipper element 4 'located in the area of this kink edge 35'. brings with it. This additional intervention variant leads to an even better lock when force is applied. In this context in particular, it is also advantageous if the finger 30 adjoining the bent edge 35 at the free end 28 of the guide webs 21, 23 is inclined at an acute angle to the central axis of the slide 5 with respect to the course of the remaining region of these guide webs 21, 23. As a result, the tilting process has been intensified as a result of the folded edge 35 and, on the other hand, the next zipper member 4 ″ can slide better around the finger 30 and get caught there.

Of course, sliders 5 of different sizes can be used for differently designed zippers and for differently sized zipper members. However, it is always ensured in the design of the slide 5 that the distance between the fingers 30, 31 formed on the free ends 28, 29 of the guide webs 21, 23 and 22, 24 depends on the locking part 15 formed on the bracket 7 is determined by the width and number of zipper members 4. Care is therefore always taken to ensure that there is a certain interaction between the locking part 14 and the fingers 30, 31 which engage under excessive load.

In the above description and in the drawing it can be seen that the guide webs 21, 23 and 22, 24 are each of the same height. Another embodiment is certainly possible in this context, so that adaptation to different shapes of zipper members is entirely possible. It would also be conceivable that different zipper members only protrude upward from the webs 2 and 3 or protrude more on one side than on the other side, so that a corresponding adjustment is then also conceivable. The shape and design of the locking part 15 differs depending on the type of zipper members used, since the locking part 15 must engage at the corresponding points in the zipper members or between the zipper members.

The measures according to the invention can be used for both single and double handles. It is therefore also possible to design sliders for zippers which can be operated from two sides in the manner according to the invention, in which case, depending on the side viewed, the upper plate forms the lower plate and the lower plate forms the upper plate of the slider body.

SPARE BLADE (RULE 26) Thanks to the special design, all possible handle shapes, such as short, long, conical or teardrop-shaped or any other shape, can of course also be realized.

The complete design of the slide including the handle from a corresponding plastic results in significant advantages. A high resilience for the bracket can be achieved. Furthermore, such zippers can easily withstand loads of up to 100 ° C, which is important, for example, when exposed to sunlight or during washing processes. Especially in terms of fashion, it is advantageous that the slide fasteners can be colored in any way so that an exact adaptation to the slide fastener tapes themselves and thus, for example, to the items of clothing is possible. Such plastics are also chemically resistant to weak acids and alkalis and are physiologically harmless, which is particularly important for items of clothing to be worn on the skin.

Sliders made of plastic also have good wear resistance and have a low coefficient of sliding friction. The measures according to the invention have a particularly advantageous effect in particular in the case of sliders made of plastic, since the retaining force with the fingers 30, p. brings an optimal power distribution with it.

Particularly advantageous is the additional application of the measures according to the invention that only a single production process is required, it being possible in this production process to produce the entire slide with slide body, hook-like part, locking nose and handle in one cycle. No assembly work is necessary, such a slide has a low weight and can be manufactured inexpensively.

The slider according to the invention can be produced for any zip chain size, so it can be used for zip types with any chain widths.

SPARE BLADE (RULE 26)

Claims

Claims:

1. Slider for a zipper, consisting of a slide body formed from the upper plate, lower plate and slide wedge and a bracket formed thereon for attaching a handle provided for actuating the slide body, the bracket connecting at one end to the slide body and overhanging it freely projecting and at its free end has an automatic shift-inhibiting brake or lock, and wherein the free end region of the bow engages under the upper shield of the slide body with a hook-like part and has the locking part at its section directed against the lower shield, and wherein the slide body together with the Bracket, with the hook-like part formed on the bracket and with the locking part is made in one piece from plastic, and wherein guide webs are formed on the lateral edge regions of the upper shield and the lower shield, on which the R facing away from the connecting regions and areas of zipper members can be supported, characterized in that the guide webs (23, 24, 21, 22) formed on the lateral edge areas of the upper plate (9) and the lower plate (10) at their free ends directed in the flow direction (27) of the zipper (28, 29) to form fingers (30, 31) engaging between two zipper members (4).

2. Slider according to claim 1, characterized in that the free ends (28, 29) of the guide webs (21, 23, 22, 24) on the two edge regions of the slider (5) project to different degrees in the closing direction (27) of the zipper, the guide webs (21, 23 and 22, 24) of the upper plate (9) and lower plate (10), which are directed towards each other in pairs at an edge area, have the same length.

3. Slider according to claim 1 or 2, characterized in that the free ends (28, 29) of the guide webs (21, 23 or 22, 24) on the two edge regions of the slide (5) by the amount (V) of half Center distance (M) of the zipper members (4) offset different distances in the closing direction (27) of the zipper.

4. Slide according to one of claims 1 to 3, characterized in that the mutually directed guide webs (21, 23 or 22, 24) on the lower plate (10) and on the upper plate (9) are of the same height.

5. Slider according to claim 1 and / or one of claims 2 to 4, characterized in that on at least one pair of guide webs (21, 23) on the upper plate (9) and on the lower plate (10) at the transition to the tapered end (28) a kink edge (35) is formed.

6. Slider according to claim 5, characterized in that at the free end (28) of the guide webs (21, 23) at the folding edge (35) adjoining fingers (30) with respect to the course of the remaining area of these guide webs (21, 23) at an acute angle is inclined towards the central axis of the slide (9).

SPARE BLADE (RULE 26)

7. Slider according to claim 1, characterized in that the distance of the fingers (30, 31) formed on the free ends of the guide webs (21, 23 or 22, 24) from a on a bracket (7) of the slider (5) trained locking part (15) depending on the width and the number of zipper members (4) is determined.

SPARE BLADE (RULE 26)