CN2595218Y

CN2595218Y - Anti-slip plastic-steel slide fastener

Info

Publication number: CN2595218Y
Application number: CN 02295600
Authority: CN
Inventors: 曹昌文
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-31
Filing date: 2002-12-31
Publication date: 2003-12-31
Anticipated expiration: 2012-12-31

Abstract

The utility model discloses a zipper for preventing plastic-steel zipper teeth from falling down. The utility model is characterized in that the inner side edge of a cloth belt is punched with a plurality of punching holes, and each punching hole position is ejected with plastic-steel zipper teeth, wherein, the tail end of each zipper tooth is clamped with the cloth belt and a central line of the inner side edge, and the upper and the lower layers of the plastic-steel zipper teeth are connected with each other by the punching holes of the cloth belt, so that the upper and the lower layers can not be divided into obvious two interlayers by the cloth belt, and thus the zipper teeth are not disengaged from zipper cloth forever. Thus, the utility model has the function of permanently firm use.

Description

The separation preventing delrin zippers with pulllers

Technical field

The utility model relates to a kind of slide fastener that prevents that the plastic-steel sprocket from coming off, and refers to the marriage relation of zipper cloth belt and plastic-steel chain between cog especially, is suitable for but only limit to the plastic-steel sprocket, can not be applicable to nylon sprocket and metal sprocket.

Background technology

Be illustrated in figure 1 as habit formula delrin zippers with pulllers, its inner side edge at strap 1 equidistantly penetrates a plurality of plastic-steel sprockets 2, by 21 on the preceding end tooth head that then discloses sprocket 2 in the sectional drawing of Fig. 2 is to be used for that usefulness is meshing with each other with the tooth head of other side chain tooth (disclosing), then 22 of end tooth pieces be double team center line 3 and strap 1, center line 3 be sewn on the strap 1 and thickness greater than strap 1, so can form the cable of sprocket 2, break away to prevent that sprocket 2 from producing with strap 1.

By as can be known aforementioned, strap 1 makes tooth piece 22 be divided into two layers up and down, if do not have being provided with of center line 3 will easily make sprocket 2 be subjected to side force (being vertical external force with the strap direction) drawing and break away from strap 1, so center line 3 equals the anti-loose structure of sprocket 2; Shake yet when sprocket 2 is subjected to in the same way external force (external force identical with the strap direction) of center line 3, just be easy to generate, for example shown in Figure 3, be subjected to towards a left side or when the external force 4,5 of right is shaken at sprocket 2, under long duration of action just easily and strap 1 produce gradually and peel off, in case there is sprocket 2 to break away from pull head can't be slided smoothly, this slide fastener can't normally be used again by strap 1.

Summary of the invention

The purpose of this utility model is to design a kind of slide fastener that prevents that the plastic-steel sprocket from coming off, and makes sprocket never break away from chain cloth, reaches permanent firm function of use.

For achieving the above object, the technical solution adopted in the utility model is: a kind of slide fastener that prevents that the plastic-steel sprocket from coming off, it is provided with a plurality of perforation in the strap equal intervals of closely facing center line, be provided with the sprocket of injection molding at each punch position, end tooth piece double team center line and strap behind the described sprocket after the shaping, and the upper and lower interlayer of tooth piece sees through the perforation of strap and links, and makes the function that sprocket after the moulding can reach strong bonded and prevent to become flexible with strap.

Secondly, when aforementioned perforation is rectangle, the tooth piece of plastic-steel sprocket is bored a hole for double team, must extend out ladder block, ladder block is separated by strap to be two fixture blocks up and down, the gross thickness of two fixture blocks and strap must so that pull head can successfully slide on sprocket, mesh the sprocket on the strap of both sides or separation simultaneously less than the spacing of pull head side folder mouth.

Can obtain following advantage by enforcement of the present utility model:

1, after the moulding of plastic-steel sprocket, in the sprocket rear end above own centre line, down the location of connecting block is arranged, make sprocket be subjected to the external force drawing or shake down to produce and not peel off or loosening with strap, make the firm better effects if of the two.

2, the perforation that forms on the strap is covered by the plastic-steel sprocket, thus do not see forming of perforation in appearance by slide fastener, and sprocket can reach reinforcement and tension function.

3, by the gross thickness of the terminal extended fixture block up and down of sprocket and strap folder mouth spacing,, can avoid pull head and refine generation blocking effect between cloth so sprocket can not influence the slip of pull head less than the pull head dual-side.

Description of drawings

Fig. 1: the stereogram of practising the formula delrin zippers with pulllers.

Fig. 2: the sectional drawing of practising formula plastic-steel sprocket and strap.

Fig. 3: the schematic top plan view of practising formula plastic-steel sprocket and strap.

Fig. 4: strap solid forming figure of the present utility model.

Fig. 5: the stereogram of the utility model delrin zippers with pulllers.

Fig. 6: the stereogram of the single plastic-steel sprocket of the utility model.

Fig. 7: be the plastic-steel sprocket I-I sectional drawing of Fig. 6.

Fig. 8: the schematic top plan view of the utility model plastic-steel sprocket and strap.

Fig. 9: the utility model delrin zippers with pulllers and side view after pull head combines.

Figure 10: the sectional drawing after the pull head combination of the utility model delrin zippers with pulllers.

The specific embodiment

Following according to detailed description of the embodiment shown in the drawing as back:

As shown in Figure 4, the utility model is provided with a plurality of perforation 6 in strap 1 equal intervals of closely facing center line 3, this perforation 6 can be the rectangle shown in the drawing or other shape as circle, square etc., it can be to burrow, modes such as molten hole are implemented, penetrate sprocket 2 (as shown in Figure 5) in each 6 position of boring a hole with the injection molding technology, back end tooth piece 22 double teams of sprocket 2 center line 3 and strap 1, and tooth piece 22 on, following interlayer sees through the perforation 6 of strap and forms connecting block 24 and linking, and makes the function that sprocket 2 after the moulding can reach strong bonded and prevent to become flexible with strap 1.

Secondly, when aforementioned perforation 6 is rectangle, the tooth piece 22 of plastic-steel sprocket 2 must extend ladder block for double team perforation 6, so-called " ladder block " is exactly that end at tooth piece 22 extends and is lower than tooth piece 22 fixture block 23 highly, because fixture block is separated by strap 1, thus two

fixture blocks

23,23 about can forming '.

In Fig. 6, disclose the three-dimensional shape of single sprocket 2, clear two fixture blocks 23,23 ' have a connecting block 24 to form of disclosing up and down among the figure, this connecting block 24 be exactly be used for making the fluctuate interlayer of tooth piece 22, two fixture blocks 23, the combination of 23 ' one moulds piece up and down; The centre bore 25 of position at tooth piece 22 centers then is to import for center line 3 to use.The formation of connecting block 24 and centre bore 25 all is constituted down by the cloth tape punching 6 that has been shaped and the shaping of center line 3.

Figure 7 shows that the full sectional view of Fig. 6, by drawing forming of sprocket 2 inner own centre line 3 and connecting block 24 as can be known in the rear end, wherein, center line 3 can make sprocket 2 under the side force drawing and avoid producing with strap 1 and peel off, and connecting block 24 can be avoided can make sprocket 2 be subjected to in the same way external force drawing of center line 3 time producing with strap 1 and peels off, this more can be understood by shown in Figure 8 obtaining further, disclose the rearward end of sprocket 2 as can be known because of last own centre line 3 is arranged by drawing, under connecting block 24 location is arranged, so last, make behind the following location that combining of 1 of sprocket 2 and strap is more firm, and though be subjected to left and right sides external force and about the side force drawing can not influence the marriage relation of 1 of sprocket 2 and strap yet.

Side view after disclosing slide fastener among Fig. 9 and the metal pull head combining, disclosing metal pull head 10 among the figure is made up of two

saddles

11,12 up and down, dual-side at two saddles has the folder mouth 13 (ginseng Figure 10 together) of deriving strap 1, and two fixture blocks 23,23 ' just up and down of sprocket 2 are positioned at folder mouth 13, so two fixture blocks 23,23 ' and the gross thickness 14 of strap 1 be width less than folder mouthfuls 13, thus, pull head 10 just can successfully slide on sprocket 2, so that sprocket 2 engagements or separation on the both sides strap 1.

If, change the perforation 6 of strap 1 into aperture, fixture block 23,23 ' with regard to inessential enforcement so up and down, but when implementing with bigger perforation 6, its firm effect must be greater than the shaping of little perforation.Again, when when implementing than large perforation 6, though make the end of sprocket 2 extend lengthening, so also the wide cut of pull head 10 can be strengthened, so that the tooth piece 22 of sprocket 2 all is positioned at the guide groove of two

saddles

11,12 up and down, only this will make the wide cut of pull head 10 increase, and fixture block 23,23 ' is comparatively suitable up and down so still extend with the end of aforementioned sprocket 2.

Claims

1, a kind of separation preventing delrin zippers with pulllers, the strap equal intervals that has center line at inner side edge is from penetrating a plurality of plastic-steel sprockets, and other has a slip pull head that is used for sprocket engagement or separation, it is characterized in that:

In the strap equal intervals of closely facing center line a plurality of perforation are set, each punch position is provided with the sprocket of injection molding, and end tooth piece double team center line and strap behind the described sprocket, and the upper and lower interlayer of tooth piece sees through the cloth tape punching and links with connecting block in the hole.

2, separation preventing delrin zippers with pulllers as claimed in claim 1, it is characterized in that: the end of plastic-steel sprocket extends fixture block, and the fixture block height is lower than the tooth tile height and forms ladder block appearance, and the gross thickness of two fixture blocks and strap must be less than the spacing of pull head side folder mouth up and down.