Double-layer expandable multi-chain zipper

Abstract

A double-layer expandable multi-chain zipper, comprising a tape group (1), a second single-layer tape (2), and sliders. The tape group (1) comprises an expandable tape (11) and a first single-layer tape (12); the expandable tape (11) is fixedly connected to one end of the first single-layer tape (12), and the fixedly connected portion is defined as a fixed end (13); a first element row (7) is provided in the extension direction of the fixed end (13), a second element row (8) is provided in the extension direction of the second single-layer tape (2), and the first element row (7) and the second element row (8) can be engaged with and disengaged from each other. The double-layer expandable multi-chain zipper further comprises a third single-layer tape (3); and the side of the tape group (1) away from the second single-layer tape (2) is connected to the third single-layer tape (3) by means of a single element strip (9). In this way, compared with providing multiple parallel zippers on a tape, providing multiple tapes and arranging a zipper at the connection of two tapes disperse the applied force. When applied to luggage, the double-layer expandable multi-chain zipper improves the security and durability of the luggage.

Description

Double-layer expandable multi-chain zipper TECHNICAL FIELD

[0001] The utility model belongs to zipper technical field, concretely relates to a double-layer expandable multi-chain zipper. BACKGROUND

[0002] The zipper was originally invented as a fastener for connecting two clothing collars, but with the development of textile technology, the zipper and the cloth belt are used more and more, especially in the aspect of travel, the cloth belt with zipper used in the box and bag has good closing effect, which plays a crucial role in avoiding the loss of the articles in the box and bag.

[0003] When the zipper is applied to the box and bag with multiple layers, multiple parallel zippers are usually arranged on one cloth belt, and a puller is arranged on the zipper. Pulling any puller will generate a pulling force on the cloth belt. After long-term use or repeated pulling, the strength of the cloth belt is easily reduced, and the service life is reduced. On the other hand, when the box and bag are placed on a vehicle or a public place with high personnel mobility, the articles in the box and bag have the risk of being stolen. The existing zipper can only be protected by locking, but the effect is general. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an expandable multi-chain zipper which can effectively prevent explosion, so as to at least solve one of the above technical problems.

[0005] In order to achieve the above utility model purposes, the technical scheme adopted by the utility model is as follows:

[0006] A double-layer expandable multi-chain zipper comprises:

[0007] A cloth belt group and a second single-layer cloth belt; and

[0008] A puller;

[0009] The cloth belt group comprises an expansion cloth belt and a first single-layer cloth belt. The end of one side of the expansion cloth belt is fixedly connected with the end of one side of the first single-layer cloth belt, and the fixedly connected part is defined as a fixed end.

[0010] The fixed end is provided with a first chain row on the inner side thereof. The second single-layer cloth belt is provided with a second chain row at the corresponding position. The first chain row and the second chain row can be engaged and separated with each other. The puller is arranged between the first chain row and the second chain row, and is used for pulling and / or opening the first chain row and the second chain row.

[0011] The third single-layer cloth strip is connected to the side of the cloth strip group away from the fixed end, and the side of the third single-layer cloth strip away from the fixed end is provided with a single-layer chain strip capable of being engaged with the single-layer chain strip of the cloth strip group.

[0012] By such an arrangement, the cloth strip group and the second single-layer cloth strip are engaged and disengaged by the first chain strip and the second chain strip, and the side of the cloth strip group away from the second single-layer cloth strip is connected to the third single-layer cloth strip through the single-layer chain strip. Compared with arranging multiple parallel zippers on one cloth strip, the utility model disperses the force by arranging multiple cloth strips and arranging zippers at the connection of two cloth strips. When the double-layer expandable multi-chain zipper of the utility model is applied to a bag, the safety and durability of the bag are greatly improved. In addition, when the pullers between the cloth strip group and the second single-layer cloth strip are locked relative to the bag, the third puller can be pulled, but the expanded cloth strip is exposed after being pulled open, which has a misleading effect and can further enhance the safety of the bag.

[0013] Preferably, the first chain strip includes a pair of parallel chain strips symmetrically arranged on both sides of the fixed end.

[0014] The second chain strip includes a pair of parallel chain strips symmetrically arranged on both sides of the second single-layer cloth strip.

[0015] Preferably, the pullers between the cloth strip group and the second single-layer cloth strip are provided with two first pullers and second pullers.

[0016] When the first puller and the second puller are pulled in the direction of the first chain strip and the second chain strip, the first chain strip and the second chain strip are engaged with each other.

[0017] When the first puller and the second puller are pulled in the direction of the first chain strip and the second chain strip, the first chain strip and the second chain strip are disengaged from each other.

[0018] Preferably, the expanded cloth strip is an elastic expanded cloth strip.

[0019] Preferably, the side of the first single-layer cloth strip away from the expanded cloth strip is defined as the front side, and the side of the first single-layer cloth strip facing the expanded cloth strip is defined as the back side. The first puller and the second puller are provided with pull noses for mounting pull tabs, and the pull noses of the first puller and the second puller face the front side.

[0020] Preferably, the single-chain tooth is arranged towards the expansion tape, and the projection of the single-chain tooth towards the reverse surface falls on the expansion tape, and the third puller is provided with a pull nose for mounting a pull tab, and the pull nose of the third puller faces the front surface.

[0021] Preferably, the extension direction of the single-chain tooth is parallel to the extension direction of the first chain tooth row.

[0022] More preferably, the extension direction of the single-chain tooth is defined as the length direction, and the direction in which the first single-layer tape points to the third single-layer tape is defined as the width direction.

[0023] The width of the expansion tape is greater than the sum of the widths of the first single-layer tape and the third single-layer tape.

[0024] Preferably, the fixed end and the fixed connection are configured to be sewn together by a needle.

[0025] Preferably, the second single-layer tape further includes an end portion on one side of the second single-layer tape and an end portion on the other side of the second single-layer tape, and the end portions on the two sides are fixedly connected.

[0026] The second chain tooth row includes a pair of parallel chain teeth, which are symmetrically arranged on the two sides. Advantages

[0027] The utility model provides a double -layer expandable multi -chain zipper, including tape group, second single -layer tape and puller, tape group includes expansion tape and first single -layer tape, and one end of expansion tape and first single -layer tape is fixedly connected, and the part of fixed connection is defined as fixed end, be equipped with first chain tooth row in the extension direction of fixed end, be equipped with second chain tooth row in the extension direction of second single -layer tape, and first chain tooth row and second chain tooth row can engage and disconnect each other, still include third single -layer tape, and one side of tape group away from second single -layer tape is connected with third single -layer tape through single -chain tooth, so set up, compared to setting up multiple parallel zippers on a tape, the utility model discloses through setting up multiple tapes, and setting up zipper at the connecting place of two tapes, disperses the force, when the double -layer expandable multi -chain zipper of the utility model is applied to the luggage, the safety and durability of the luggage are greatly improved, in addition, when the puller between tape group and second single -layer tape is locked relative to the luggage, the third puller can pull, but the expansion tape is exposed after being pulled apart, has the misleading effect, and the safety of the luggage can be further strengthened. ACCURACY

[0028] Fig. 1 is a perspective view of the expandable multi-chain zipper according to the utility model;

[0029] Fig. 2 is a perspective view of the expandable multi-chain zipper according to the utility model, which is different from the direction of Fig. 1;

[0030] Figure 3 is a perspective view of the expandable multi-chain zipper of the present embodiment, as distinguished from the direction of Figures 1 and 2;

[0031] Figure 4 is a perspective view of the puller of the present embodiment and connected thereto;

[0032] Figure 5 is a perspective view of the integrally expandable zipper of the present embodiment after being hidden;

[0033] Figure 6 is a sectional view along the direction of A-A in Figure 1;

[0034] Figure 7 is another embodiment as distinguished from Figure 1;

[0035] Figure 8 is another embodiment as distinguished from Figures 1 and 7;

[0036] Figure 9 is another embodiment as distinguished from Figures 1, 7 and 8. ACCOMPANYING DRAWINGS

[0037] 1 - cloth tape group; 11 - expanded cloth tape; 12 - first single-layer cloth tape; 13 - fixed end; 2 - second single-layer cloth tape; 3 - third single-layer cloth tape; 4 - first puller; 41 - positioning hole; 5 - second puller; 6 - third puller; 7 - first chain column; 8 - second chain column; 9 - single chain strip. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific embodiments of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0039] The technical solutions of the present application will be described in detail below with specific embodiments.

[0040] Please refer to Figures 1 to 3, the present embodiment discloses a double-layer expandable multi-chain zipper, comprising a cloth tape group 1, a second single-layer cloth tape 2 and a puller, the end of the cloth tape group 1 is provided with a first chain column 7, the end of the second single-layer cloth tape 2 is provided with a second chain column 8, the first chain column 7 and the second chain column 8 can be engaged and disengaged with each other, the puller is slidably arranged between the first chain column 7 and the second chain column 8, for pulling together and / or pulling apart the first chain column 7 and the second chain column 8.

[0041] Specifically, the cloth tape group 1 comprises an expansion cloth tape 11 and a first single-layer cloth tape 12, one end of the expansion cloth tape 11 and the first single-layer cloth tape 12 are fixedly connected, and the part where the fixed connection is defined is a fixed end 13; a first chain row 7 is arranged in the extension direction of the fixed end 13, and a second chain row 8 is arranged in the extension direction of the second single-layer cloth tape 2, and the first chain row 7 and the second chain row 8 can be engaged and disengaged with each other; please also refer to FIGS. 4 to 6, the first chain row 7 comprises a pair of parallel chain strips, which are arranged on both sides of the fixed end 13, and the second chain row 8 comprises a pair of parallel chain strips, which are arranged on both sides of the second single-layer cloth tape 2; in this way, compared with a single-layer chain strip, the fixing effect between the first chain row 7 and the second chain row 8 using double-layer chain strips is better, that is, even if the chain strip on one side is broken, the chain strip on the other side still has a closing function; when the expandable multi-chain zipper of the embodiment is applied to a bag, the safety and durability of the bag can be greatly improved.

[0042] It can be understood that the expansion cloth tape 11 in the embodiment is configured as a stretchable expansion cloth tape, has a certain elasticity, and has a good deformation effect; when the expandable multi-chain zipper of the embodiment is applied to a bag, even if the bag has too many objects and has a pushing force on the zipper, the expansion cloth tape 11 can still be elastically extended to relieve the pushing force, cooperate with the first chain row 7 and the second chain row 8, and reduce the risk of zipper breakage.

[0043] Preferably, the fixed end 13 is configured as a needle and thread sewing type fixed connection, which ensures the stability of the connection and also ensures the aesthetic level.

[0044] Further, two pullers are arranged between the cloth tape group 1 and the second single-layer cloth tape 2, which are a first puller 4 and a second puller 5; when the first puller 4 and the second puller 5 are pulled in the same direction along the first chain row 7 and the second chain row 8, the first chain row 7 and the second chain row 8 are engaged with each other; when the first puller 4 and the second puller 5 are pulled in opposite directions along the first chain row 7 and the second chain row 8, the first chain row 7 and the second chain row 8 are disengaged with each other; in this way, when the zipper of the embodiment is applied to a bag, compared with a single puller, two pullers with opposite locking directions can more conveniently and quickly engage and disengage the chain, improve the operation efficiency, and the action amplitude does not need to be too large, and the labor intensity is reduced compared with single-handed operation.

[0045] Further, as shown in FIG. 3, the first puller 4 and the second puller 5 in the embodiment are respectively provided with positioning holes 41, when the first puller 4 and the second puller 5 abut against each other, a lock can pass through the positioning holes 41 on the two pullers to lock the two pullers with each other, so that the two pullers cannot be pulled in opposite directions, thereby enhancing the safety of the bag.

[0046] Furthermore, the extensible multi-chain zipper further comprises a third single-layer cloth tape 3, one side of the first single-layer cloth tape 12 away from the fixed end 13 is connected with the third single-layer cloth tape 3, specifically, the connection mode is selected as a zipper connection, and a single chain tooth 9 capable of being mutually engaged is arranged on one side of the first single-layer cloth tape 12 away from the fixed end 13 and the third single-layer cloth tape 3 respectively, a third puller 6 is arranged on the single chain tooth 9, and the third puller 6 is slidably connected to the single chain tooth 9, so as to make the single chain tooth 9 engage and / or disengage.

[0047] Preferably, the extension direction of the single chain tooth 9 is parallel to the extension direction of the first chain tooth row 7 (and the second chain tooth row 8).

[0048] Further, the side of the first single-layer cloth tape 12 away from the expansion cloth tape 11 is defined as a front surface, and the side of the first single-layer cloth tape 12 facing the expansion cloth tape 11 is defined as a back surface, that is, the axial view of FIG. 1 is the front surface, and the axial view of FIG. 2 is the back surface, the first puller 4 and the second puller 5 are respectively provided with a pull nose for mounting a pull tab, the first puller 4 and / or the second puller 5 can be pulled to move by pulling the pull tab, the pull nose of the first puller 4 and the second puller 5 faces the front surface, the third puller 6 is also provided with a pull nose for mounting a pull tab, and the pull nose also faces the front surface; as shown in FIG. 5, the single chain tooth 9 is arranged towards the expansion cloth tape 11, and the projection of the single chain tooth 9 towards the back surface falls on the expansion cloth tape 11.

[0049] Further, the extension direction of the single chain tooth 9 is defined as a length direction, and the direction of the first single-layer cloth tape 12 pointing to the third single-layer cloth tape 3 is defined as a width direction; the width of the expansion cloth tape 11 is greater than the sum of the widths of the first single-layer cloth tape 12 and the third single-layer cloth tape 3, and the width of the expansion cloth tape 11 is greater than the width of the second single-layer cloth tape 2 and the third single-layer cloth tape 3.

[0050] In this way, when the first puller 4 and the second puller 5 are locked by the lock through the positioning hole 41, only the third puller 6 can be pulled open, but the part exposed after being pulled open is not the storage space in the bag, but the expansion cloth tape 11, and such a design has a misleading effect and can further enhance the safety of the bag and play a role in preventing theft.

[0051] On the other hand, the single chain tooth 9 can also be configured to face the front surface, as shown in FIG. 7; and the first chain tooth row 7 and the second chain tooth row 8 can also be configured as a single row, as shown in FIGS. 8 and 9, the first chain tooth row 7 and the second chain tooth row 8 are single chain teeth in FIG. 8, and the single chain tooth 9 faces the front surface; the first chain tooth row 7 and the second chain tooth row 8 are single chain teeth in FIG. 9, and the single chain tooth 9 faces the back surface, and such an embodiment also falls within the protection scope of the utility model.

[0052] In summary, the utility model provides a kind of double-layer expandable multi-chain zipper, including cloth tape group 1, second single-layer cloth tape 2 and puller, cloth tape group 1 includes expansion cloth tape 11 and first single-layer cloth tape 12, expansion cloth tape 11 and first single-layer cloth tape 12 one end fixed connection, the part of fixed connection is defined as fixed end 13;First chain row 7 is equipped in the extension direction of fixed end 13, second chain row 8 is equipped in the extension direction of second single-layer cloth tape 2, first chain row 7 and second chain row 8 can mutually engage and disconnect, and the side of cloth tape group 1 away from second single-layer cloth tape 2 is connected with third single-layer cloth tape 3 by single chain strip 9, so set, compared with setting multiple parallel zippers on a cloth tape, the utility model is set by setting multiple cloth tapes, and setting zipper at the connection of two cloth tapes, disperses force, when the double-layer expandable multi-chain zipper of the utility model is applied to luggage, the safety and durability of luggage are greatly improved;In addition, when the puller between cloth tape group 1 and second single-layer cloth tape 2 is locked relative to luggage, third puller 3 can be pulled, but the expansion cloth tape 11 is exposed after being pulled apart, has misleading effect, can further strengthen the safety of luggage;Further, the double-layer expandable multi-chain zipper of the utility model can be applied in the luggage with multiple layers of space, first chain row 7 and second chain row 8 can be opened by pulling first puller 4 and second puller 5, so that the space on both sides is opened, third puller 6 can be opened by pulling single chain strip 9, so that the space on both sides of single chain strip 9 is opened.

[0053] The above describes in detail the embodiment of the double-layer expandable multi-chain zipper provided by the utility model. The principles and implementation modes of the utility model are described by applying specific examples. The above embodiment is only used to help understand the core idea of the utility model. It should be noted that, for ordinary skilled persons in the technical field, without departing from the principles of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A double-layer expandable multi-chain zipper, characterized in that, include: Fabric tape group (1) and second single-layer fabric tape (2); as well as Pull head; The tape group (1) includes an extended tape (11) and a first single-layer tape (12). One end of the extended tape (11) is fixedly connected to one end of the first single-layer tape (12), and the fixedly connected part is defined as the fixed end (13). The fixed end (13) has a first chain tooth row (7) on its inner side, and the second single-layer fabric tape (2) has a second chain tooth row (8) at the corresponding position. The first chain tooth row (7) and the second chain tooth row (8) can engage and disengage with each other. The pull head is located between the first chain tooth row (7) and the second chain tooth row (8) and is used to pull the first chain tooth row (7) and the second chain tooth row (8) together and / or pull them apart. It also includes a third single-layer fabric strip (3), on the side of the first single-layer fabric strip (12) away from the fixed end (13) connected to the third single-layer fabric strip (3); the side of the first single-layer fabric strip (12) away from the fixed end (13) and the third single-layer fabric strip (3) are respectively provided with single-layer chain teeth (9) that can interlock with each other, and the single-layer chain teeth (9) are provided with a third pull head (6), and the third pull head (6) is slidably connected to the single-layer chain teeth (9) for making the single-layer chain teeth (9) interlock and / or disengage.

2. The double-layer expandable multi-chain zipper according to claim 1, characterized in that, The first chain tooth row (7) includes a pair of parallel chain teeth, symmetrically arranged on both sides of the fixed end (13); The second chain tooth row (8) includes a pair of parallel chain teeth, symmetrically arranged on both sides of the second single-layer fabric tape (2).

3. The double-layer expandable multi-chain zipper according to claim 1, characterized in that, There are two pull heads between the fabric tape group (1) and the second single-layer fabric tape (2), namely the first pull head (4) and the second pull head (5); When the first zipper (4) and the second zipper (5) are pulled in opposite directions along the first chain tooth row (7) and the second chain tooth row (8), the first chain tooth row (7) and the second chain tooth row (8) engage with each other; When the first pull head (4) and the second pull head (5) are pulled in opposite directions along the first chain tooth row (7) and the second chain tooth row (8), the first chain tooth row (7) and the second chain tooth row (8) disengage from each other.

4. A double-layer expandable multi-chain zipper according to claim 1, characterized in that, The extended fabric tape (11) is an elastic extended fabric tape.

5. A double-layer expandable multi-chain zipper according to claim 4, characterized in that, The side of the first single-layer fabric tape (12) facing away from the extended fabric tape (11) is defined as the front side, and the side facing the extended fabric tape (11) is defined as the back side. The first zipper head (4) and the second zipper head (5) are provided with zipper noses for installing zipper tabs, and the zipper noses of the first zipper head (4) and the second zipper head (5) face the front side.

6. A double-layer expandable multi-chain zipper according to claim 5, characterized in that, The single chain tooth (9) is positioned toward the extended fabric tape (11), and the projection of the single chain tooth (9) toward the reverse side falls on the extended fabric tape (11). The third pull head (6) is provided with a pull nose for installing the pull tab, and the pull nose of the third pull head (6) faces the front side.

7. A double-layer expandable multi-chain zipper according to claim 4, characterized in that, The extension direction of the single chain tooth (9) is parallel to the extension direction of the first chain tooth row (7).

8. A double-layer expandable multi-chain zipper according to claim 7, characterized in that, The extension direction of the single chain toothed bar (9) is defined as the length direction, and the direction from the first single layer cloth tape (12) to the third single layer cloth tape (3) is defined as the width direction; The width of the extended tape (11) is greater than the sum of the widths of the first single-layer tape (12) and the third single-layer tape (3).

9. A double-layer expandable multi-chain zipper according to claim 1, characterized in that, The fixed end (13) is configured as a needle and thread sewing type fixed connection.

10. A double-layer expandable multi-chain zipper according to claim 1, characterized in that, The width of the extended telescopic webbing (11) is greater than the width of the second single-layer webbing (2) and the third single-layer webbing (3).

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