TWI700052B - Double-layer tooth slider structure - Google Patents

Abstract

A double-tooth slider structure, which is used to open and close the upper and lower double-layer chain belts of the same specification. It is characterized in that the maximum width of the lower cover is smaller than the maximum width of the upper cover, and the lower side protector The length of the plate is shorter than the length of the upper side guard plate, and the shape of the rear end of the lower cover plate is tapered; by reducing the maximum width of the open end of the lower cover plate near the base center, the N-shaped plastic strips or edging at the corners of the luggage can be reduced. Fabric and lining stitching folds, and over-curving zipper tapes are tightly attached to N-shaped strips, or fabric-covered iron rings, etc. Covered stitching folds, uneven thickness defects caused by the lower cover plate passing through the small channel , The purpose of large obstructive force is to reduce the jamming of the slider through the corner of the bag. The slider structure is used in the double layer On the zipper, although the lower cover and the lower side guard have been modified to narrow and shorten respectively, in use, the chain belt of the upper teeth is still on the upper cover, upper side guard and the upper cover that have not been changed. In the upper chamber formed by the partition guide By closing the teeth, the left and right chain belts of the upper teeth can be normally closed; for the closing teeth of the left and right chain belts of the lower teeth, the left and right chain belts of the lower teeth are also smoothly driven and guided by the left and right chain belts of the upper teeth. Meshing. This structural design reduces the width of the widest part of the lower cover plate of the slider, which can avoid or reduce the obstacles caused by the tension and folds of the wrapping at the corners of the luggage, and make the opening and closing of the slider easy when pulling. At the same time, avoid the wear of the inner cloth tape after repeated pulling and slipping.

Description

Double-layer tooth slider structure

The invention relates to a double-tooth slider structure, which relates to a zipper, and more specifically to the related technology of the double-tooth slider structure.

Press, usually the size and shape of the upper and lower cover of the slider of a double-tooth zipper are the same. Complete the width of the tooth position, and the width of the front and rear ends is significantly different, except that the upper guard plates on both sides of the upper cover are on the lower surface of the upper cover, and the lower guards on both sides of the lower cover are on the upper surface of the lower cover. , And the positions of the upper and lower side guards correspond to the upper and lower sides, and the lengths are equal, as shown in Figures 1 to 3 of the slider 7 of the double-tooth zipper. In order to solve the problem that the curvature of the outer zipper is greater than the curvature of the inner zipper when the zipper direction meets up and down turns, especially at the 90-degree turn of the box on the left and right sides of the bag, the difference in curvature between the inner and outer layers is compared. Large, at this time, the outer layer of teeth will expand outwardly at the turning point, while the inner layer of teeth They are in a state of shrinking and squeezing each other. When forming the upper and lower layers with a same cavity slider to close the teeth, the time and shape space when the upper and lower layers are not coordinated will be hindered. Prevent the sliding of the slider's teeth. Increase the sliding resistance of the slider's teeth, and cause rapid wear of the upper and lower guard plates and seam bundles, the opening of the upper and lower guard plates, the bending of the base core or the tearing of the pull tab, etc., making the slider and The chain belt is damaged prematurely. As a result, the Chinese Mainland Invention No. ZL201410007719.8 "A double-tooth zipper puller" patent is designed. It adopts a structure in which the lower cover corresponds to the upper cover and is reduced by the thickness of one layer of teeth, which improves the bending of the double-layer teeth. The resistance at the corner when the angle is slippery. Compared with the traditional slider, it is much better than the traditional slider, but when the luggage customer sews the zipper to the hard case shell or the soft case elastic iron frame covering fabric, When the slider is turning, the action is rotating during the stitching. Now The elephant usually rotates the zipper and pulls down the seam tightly, so that the zipper at the corner of the bag is particularly close to the shell or the iron frame of the bag fabric. This tightly stretched corner part is also uneven due to the folds of the inner lining, so when the zipper head slides through the corner, the widest part of the lower cover of the slider will touch the stitched lining folds (inconsistent thickness) , Uneven), and this bending section is exactly the position of the bending tension state, so the resistance to pulling the slider is greatest at this position. You must hold the pull tab, lift it up and then slide it, to proceed smoothly. Therefore, zippers and sliders are often qualified and normal, but once the sewing on the luggage becomes a little better or not, the quality is unstable, causing continuous quality disputes between suppliers and customers.

In view of this, the inventor, after continuous research and improvement, invented and designed a double-tooth slider structure.

The main purpose of the present invention is to provide a double-tooth slider The structure can achieve the purpose of good anti-theft performance, long service life, and easy opening and closing of the slider when turning.

A double-tooth slider structure is used to open and close the upper and lower double-layer chain belts of the same specification. The slider includes an upper cover and a lower cover. Both sides are respectively provided with an upper side guard plate and a lower side guard plate. The distance between the tooth ends of the left and right upper guard plates is the same as the distance between the tooth ends of the left and right lower guard plates. They are connected by a base core, and a partition guide is designed on the base core to separate the upper and lower chain belts. It is characterized in that: the maximum width of the lower cover is smaller than the maximum width of the upper cover, and the lower guard The length is shorter than that of the upper side guard plate, and the shape of the rear end of the lower cover plate is tapered; by reducing the maximum width of the open end of the lower cover plate near the base center, the N-shaped plastic strip or edging fabric and the edging at the corner of the bag can be reduced. The stitching folds of the lining cloth, and the over-curving zipper tapes are tightly attached to the N-shaped strips, or the folds covered by the fabric-covered iron ring, etc. The passage of the lower cover plate is small and obstructs the passage of the lower cover plate caused by the uneven thickness defect The purpose of large force is to reduce the jam of the slider passing the corner of the bag Hinder. The slider structure is used on the double-layer zipper, even though the lower cover and The lower side guard plate has been modified to narrow and shorten, but in use, because the chain belt of the upper teeth is still in the upper cavity composed of the upper cover plate, the upper side guard plate and the partition guide that have not been changed The interior passes through the teeth, so the left and right chain belts of the upper teeth can be normally closed; for the teeth of the left and right chain belts of the lower teeth, driven and guided by the left and right chain belts of the upper teeth, the left and right chain belts of the lower teeth are also Smooth meshing. This structural design reduces the width of the widest part of the lower cover plate of the slider, which can avoid or reduce the obstacles caused by the tension and folds of the wrapping at the corners of the luggage, and make the opening and closing of the slider easy when pulling. At the same time, avoid the wear of the inner cloth tape after repeated pulling and slipping.

[Learning]

(7): slider

[This creation]

(1): Upper cover

(2): Lower cover

(3): Upper side guard plate

(4): Lower side guard plate

(5): Base Heart

(6): Separating guide

(S1): The distance between the tooth ends of the lower guard plate

(S2): The distance between the tooth ends of the upper guard plate

(W1): Maximum width of the lower cover

(W2): Maximum width of upper cover

(L1): The length of the lower guard plate

(L2): The length of the upper side guard

Fig. 1 is a front view of a slider of a conventional double-tooth zipper.

Fig. 2 is a right side view of Fig. 1.

Fig. 3 is a cross-sectional view taken along line C-C in Fig. 1.

Fig. 4 is a front view of an embodiment of the present invention.

Fig. 5 is a right side view of Fig. 4.

Fig. 6 is a sectional view taken along the line A-A in Fig. 4.

Fig. 7 is a B-B sectional view of Fig. 4.

Fig. 8 is a bottom view of the overlapping state of the upper cover and the lower cover of the embodiment of the present invention.

Figures 4 to 8 show a schematic diagram of the structure of a double-tooth slider structure of the present invention. It can be seen from the figure that it is used to open and close the upper and lower double-layer chain belts of the same specification, that is, the width of the upper and lower chain teeth of the double-layer chain belt is the same. The slider includes an upper cover plate 1 and a lower cover plate 2. On the left and right sides of the upper cover plate 1 and the lower cover plate 2, an upper side guard plate 3 and a lower side guard plate 4 are respectively provided. The distance S1 between the tooth ends of the lower side shield 4 on the side is the same as the distance S2 between the tooth ends of the upper side shield 3 on the left and right sides. The upper cover plate 1 and the lower cover plate 2 are connected by a base core 5. Designed in the middle of base 5 The partition guide 6 separates the upper and lower layers of the chain belt. The width of the partition guide 6 is smaller than the width of the base core, and its shape is an isosceles triangle or an isosceles trapezoid. The maximum width W1 of the lower cover plate 2 (refer to Figure 4) is smaller than the maximum width W2 of the upper cover plate 1. Generally, the maximum width W1 of the lower cover plate 2 is 70% to 80% of the maximum width W2 of the upper cover plate 1. The shape of the rear end of the plate 2 is tapered. The length L1 of the aforementioned lower guard plate 4 (also refer to FIG. 5) is shorter than the length L2 of the upper guard plate 3. Generally, the length L1 of the aforementioned lower guard plate 4 is 50% to 80% of the length L2 of the upper guard plate 3.

In summary, the present invention can reduce the maximum width of the open end of the lower cover plate 2 near the base core 5, so as to reduce the stitching folds of the N-shaped plastic strip or the edging fabric and lining of the bag at the corners, as well as the curved zipper. The cloth tape is tightly attached to the N-shaped strip, or the fabric-coated iron ring, etc., which is caused by the wrinkles and uneven thickness of the lower cover caused by the defects of the lower cover. Through the blockage of the bag at the corner. Because the slider structure is used on a double-layer zipper, although the lower cover plate 2 and the lower side guard plate 4 have been modified to narrow and shorten respectively, in use, the chain belt of the upper teeth is still not made. The upper chamber composed of the changed upper cover 1, the upper guard 3 and the partition guide 6 passes through the teeth, so the left and right chain belts of the upper teeth can be normally closed; for the closed teeth of the left and right chain belts of the lower teeth, Driven and guided by the left and right chain belts of the upper teeth, the left and right chain belts of the lower teeth also mesh smoothly. This structural design reduces the width of the widest part of the lower cover plate 2 of the slider, which can avoid or reduce the obstacles caused by the tightening of the bag at the corners and the folds of the covering, and the opening and closing of the slider is easy , And at the same time to avoid the wear of the inner cloth tape after repeated pulling and slipping, so the double-tooth slider structure of the present invention is practical and progressive. It is applied for an invention patent. I implore the review committee of Jun Bureau for detailed investigation. And given the quasi-patent, it is easy to feel the virtue.

However, the above are only preferred embodiments of the present invention, and should not be used to limit the scope of implementation of the present invention. Equal changes and modifications made to the scope of benefits should still fall within the scope of the patent covered by the present invention.

(1): Upper cover

(2): Lower cover

(3): Upper side guard plate

(4): Lower side guard plate

(5): Base Heart

(6): Separating guide

(S1): The distance between the tooth ends of the lower guard plate

(S2): The distance between the tooth ends of the upper guard plate

(W1): Maximum width of the lower cover

(W2): Maximum width of upper cover

Claims (1)

A double-tooth slider structure, which is used to open and close the upper and lower double-layer chain belts of the same specification. The slider includes an upper cover and a lower cover. The upper and lower guard plates are respectively provided on both sides of the upper and lower guard plates. The distance between the tooth ends of the left and right upper guard plates is the same as the distance between the tooth ends of the left and right lower guard plates. They are connected by a base core. The base core is designed with a separation guide that separates the upper and lower chain belts. The maximum width of the lower cover is smaller than the maximum width of the upper cover, and the maximum width of the lower cover The width is 70% to 80% of the maximum width of the upper cover; it is characterized in that: the length of the lower cover is shorter than the length of the upper cover, the rear end of the lower cover is tapered, and the lower cover The length is 50% to 80% of the length of the upper side guard, and the width of the partition guide is smaller than the width of the base core, and the shape of the partition guide is an isosceles triangle or an isosceles trapezoid.

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