CN201139140Y

CN201139140Y - Tadpole shaped teeth for slide fastener

Info

Publication number: CN201139140Y
Application number: CNU2008200827476U
Authority: CN
Inventors: 王联洲
Original assignee: Individual
Current assignee: GENMORE (ZHEJIANG) ZIPPER Corp
Priority date: 2008-01-24
Filing date: 2008-01-24
Publication date: 2008-10-29
Anticipated expiration: 2018-01-24

Abstract

The utility model discloses a tadpole-shaped zipper tooth, and aims at providing the tadpole-shaped zipper tooth with good theft-proof performance, simple structure, convenient manufacture, and strong generality,. A plastic single-line shaping as a circular strip is twisted to form a screwy strip-shaped loop with the hollow center having an oblate shape, the screwy strip-shaped loop has equal worm distance, two rows of zipper teeth are formed by a group of the screwy loops with the left screwing-direction and the right screwing-direction, tooth-heads are respectively obtruded at the oblate bent external sides of the same group corresponding to the two rows of the zipper teeth, the tooth-heads are respectively formed to be two T shapes with one being rotated by 90 DEG, and the other being rotated by 360 DEG, the zipper teeth of the same group are locked at intervals, a part connected with the tooth-heads is a zipper tooth body, wherein, a sunken face is pressed on the zipper tooth body positioned at the front end of the engaged tooth head, the rest material is expanded towards the two sides of the zipper tooth body, a neck part with the thin middle is formed between the tooth head and the expanded part, during the locking process, tooth-heads of the other row of zipper teeth are locked between the two adjacent neck parts so as to be against the front part of each locked tooth-head.

Description

Tadpole shape zipper sprocket

Technical field

The utility model relates to slide fastener, more specifically to a kind of tadpole shape zipper sprocket.

Background technology

Traditional nylon zipper sprocket, it is the coil that is around in the excellent curl that is shaped with the plastics single line Volume that justifies bar shaped, extract the rod that is shaped then out, the center penetrates twists thread, constitute the counterrotating two winding displacement circles of left and right direction by the twin-screw group again, and coil is up promoted and by heater single line is softened to become oblateness as shown in Figure 1 with the control coil shape, finally charge and attack the formed tooth head, the tooth head is made

With

The sprocket of shape, therefore, except the tooth head, the spiral coil that Volume remains the bar shaped of three-dimensional circle around all the other shapes of single line as shown in Figure 2.Then the monolateral chain tooth bar of left and right sprocket is joined, be called " chain tooth bar " as shown in Figure 3 at mutual card state.This chain tooth bar function is the mutual fastening effect of left and right tooth head, again through being stitched together with strap and becoming zipper strip.This zipper strip after pull head penetrates, the action that can do tooth punching or close tooth, and laterally have fastening intensity " left and right ".More than be manufacturing process, chain toothing and the fastening principle of traditional zipper.The method and form have passed in the slide fastener industry and have used more than 50 year, are widely used on clothes, the case and bag.But because the inadequate natural endowment of this kind slide fastener, the tension effect is arranged when laterally drawing, can be laterally when slippage in the centre, because sprocket tooth head end does not withstand, and there is the gap, give the lawless person with opportunity, some robbers need only under the gap location thorn that fastens with the past sprocket of the nib end of ballpoint pen, and the left and right side chain tooth of general traditional structure sprocket just has the situation of cracking.This will greatly reduce the security that traditional zipper uses on case and bag, all rely on slide fastener and lockset to be used for antitheft structure on case and bag all becomes and perform practically no function.

Summary of the invention

The purpose of this utility model provides that a kind of theftproof performance is good, simple in structure, easily manufactured, the tadpole shape zipper sprocket of highly versatile.

In order to reach above-mentioned requirements, the technical scheme that is adopted is: with the plastics single line of circle bar shaped, Volume is around being oblate hollow spirality strip coil with the center of being configured as, described spirality strip coil is a uniform pitch, with left-handed to the spiral coil with dextrorotation be one group two row sprockets, charge and attack out the tooth head respectively at the place, oblate bending outside of relative two row's sprockets on the same group, the tooth head is made respectively With

Shape, with forming the sprocket that the space fastens, what link to each other with the tooth head is the sprocket body, it is characterized in that being suppressed with sagging face on one's body respectively at the sprocket of the tooth head front end that fastens mutually, unnecessary material is opened to the two sides of sprocket body are swollen, the tooth head and swollen open form between the position in the middle of thin neck, when fastening, tooth head of another row's sprocket just is stuck between the two adjacent necks, the tooth head leading section of each fastening form against.

Tadpole shape zipper sprocket according to the such scheme manufacturing, it is by compacting on the conventional nylon zipper sprocket, the single line that is originally round stripe shape diameter is become at the tooth back of head has the part to expand, tooth head and expand and have thin neck between the position, single sprocket such as tadpole shape, another row's tooth head just is stuck between the two adjacent necks, the tooth head leading section of each fastening form against.This structure makes the effect that all is mutual fastening and is abutted together at the left, right, front and rear four direction between sprocket and the sprocket, has eliminated the gap between tooth and the tooth fully, does not have loosening phenomenon.This kind tadpole toothed chain bar can prevent effectively that through being stitched into chain belt the most advanced and sophisticated class of sticker such as ballpoint pen from piercing through, and the phenomenon that slide fastener is had split, and has strengthened the defencive function of slide fastener, is a big technological progress of slide fastener industry.

Description of drawings

Fig. 1 is the front view of traditional nylon zipper sprocket;

Fig. 2 is the vertical view of the counterrotating two row's traditional zipper sprockets of left and right direction;

Fig. 3 is the structure chart of traditional nylon zipper sprocket buckling state;

Fig. 4 is the front view of tadpole shape zipper sprocket;

Fig. 5 is the vertical view of the counterrotating two row tadpole shape zipper sprockets of left and right direction;

Fig. 6 is the structure chart of tadpole shape zipper sprocket buckling state;

Fig. 7 is the partial enlarged drawing at A position among Fig. 6;

Fig. 8 is the sprocket front view that is suppressed with the face of sinking at the upper surface of sprocket and lower surface.

Wherein: 1, single line; 2, place, oblate bending outside; 3, tooth head; 4, sprocket body; 5, sagging face; 6, side; 7, neck; 8, oval face; 9, ∽ shape; 10, anti-∽ shape; 11, front end; 12, tail end; 13, convex shoulder.

The specific embodiment

The utility model will be further described below in conjunction with the drawings and specific embodiments.

Fig. 1, Fig. 2, Fig. 3 are traditional nylon zipper chain toothings.It is the plastics single line 1 with the circle bar shaped, Volume is around being oblate hollow spirality strip coil with the center of being configured as, described spirality strip coil is a uniform pitch, with left-handed to the spiral coil with dextrorotation be one group two row sprockets, charge and attack out tooth head 3 respectively at the place, oblate bending outside 2 of relative two row's sprockets on the same group, tooth head 3 is made respectively With

Shape, with forming the sprocket that the space fastens, what link to each other with tooth head 3 is sprocket body 4.

The utility model be on the basis of making above-mentioned traditional nylon zipper sprocket again sprocket body 4 upper surfaces at tooth head 3 front ends that fasten mutually be suppressed with the face 5 that sink respectively, the shape of face 5 of sinking can be arcwall face as shown in Figure 4, also shape such as plane, make unnecessary material to the two sides of sprocket body 46 swollen opening, form middle thin neck 7 between the position at tooth head 3 and swollen opening, the swollen end face ovalize face 8 of opening the position as shown in Figure 5, tooth head 3 of another row's sprocket just is stuck between the two adjacent necks 7, forms against as shown in Figure 6 at tooth head 3 leading sections of each fastening.Form the contact-making surface of ∽ shape 9 and anti-∽ shape 10 in the both sides of

tooth head

3,13 one-tenths of the convex shoulders of the front end 11 of ∽ shape 9 and anti-∽ shape 10 and tail end 12 and oval face 8 against as shown in Figure 7, thereby prevention tooth head 3 becoming flexible at left and right directions.Certainly described sagging face is except the upper surface that is compressed on the zipper sprocket body as shown in Figure 4, can also be compressed on the lower surface of zipper sprocket body or upper surface and lower surface and all suppress to sink and look like shown in Figure 8.

By above-mentioned structural improvement, can make the loosening state of original traditional left and right mutual button interfix, becoming left and right tooth head 3 can detain mutually, and increased squeeze mutually against function, thereby reach the situation that the front, rear, left and right four direction all has mutual button to be abutted together mutually, do not have loosening phenomenon.Therefore when tadpole toothed chain bar uses through being stitched into chain belt, can reach and prevent to be pierced through and the generation of slide fastener cracking situation by sticker.

Claims

1, tadpole shape zipper sprocket, it is the plastics single line with the circle bar shaped, Volume is around being oblate hollow spirality strip coil with the center of being configured as, described spirality strip coil is a uniform pitch, with left-handed to the spiral coil with dextrorotation be one group two row sprockets, charge and attack out the tooth head respectively at the place, oblate bending outside of relative two row's sprockets on the same group, the tooth head is made respectively

With

2, tadpole shape zipper sprocket according to claim 1 is characterized in that described sagging face is arcwall face or plane.

3, tadpole shape zipper sprocket according to claim 1 is characterized in that described sagging face is upper surface or lower surface or upper surface and the lower surface that is compressed on the zipper sprocket body.