Three-way combined zipper

Abstract

The utility model relates to a three-way combined zipper which comprises a zipper head and a zipper strip, the zipper strip comprises two transverse zipper racks and a third zipper rack, zipper teeth of the two transverse zipper racks face to each other and can be sequentially meshed and connected into a whole in a staggered mode, and each zipper tooth of the two transverse zipper racks is provided with a C-shaped groove. C-shaped grooves of two corresponding and opposite zipper teeth of the two transverse zipper racks are meshed to form a clamping groove, the third zipper rack is provided with a plurality of third zipper teeth which are connected into a whole, each third zipper tooth is provided with a clamping tooth which can be clamped into the clamping groove in a matched mode under the pulling and pressing of the zipper head, and two first zipper grooves and a third zipper groove are formed in the zipper head. The two first chain grooves can penetrate into the two transverse zipper racks correspondingly and enable the two transverse zipper racks to be meshed in a staggered mode, and the third chain grooves can penetrate into the third zipper racks correspondingly and enable the clamping teeth of the third zipper teeth to be clamped into the clamping grooves.

Description

Technical Field

[0001] This utility model relates to the technical field of zipper products, specifically to a three-way zipper. Background Technology

[0002] Currently, zippers consist of two sets of chain structures. A groove on the zipper head causes the teeth to engage as the zipper slides through, ultimately joining two parallel objects together. In certain special situations, double or multiple layers of zippers are required; however, pulling the zipper twice or multiple times makes operation inconvenient.

[0003] For example, Chinese utility model patent 202021640244.3 discloses a zipper-type three-in-one data cable, including a three-in-one data cable with a main cable and a secondary cable, and three sleeves fitted over the secondary cable, a zipper head fitted over the sleeves and slidable along the length of the sleeves, and chain teeth arranged in pairs between adjacent sleeves and capable of interlocking; when the zipper head slides along the length of the sleeves, it can open or close the adjacent chain teeth. This zipper-type three-in-one data cable actually still uses two separate zippers arranged side by side.

[0004] Chinese utility model patent 202421175750.8 discloses a double-layer expandable multi-chain zipper, including a fabric tape group, a second single-layer fabric tape, a third single-layer fabric tape, and a zipper pull. The fabric tape group includes an extension fabric tape and a first single-layer fabric tape, with one end of the extension fabric tape and the first single-layer fabric tape fixedly connected, defined as the fixed end. A first chain tooth row is provided in the extending direction of the fixed end, and a second chain tooth row is provided in the extending direction of the second single-layer fabric tape. The first chain tooth row and the second chain tooth row can engage and disengage with each other. The side of the fabric tape group away from the second single-layer fabric tape is connected to the third single-layer fabric tape through a single chain tooth. The original design intention of this patent is to set multiple parallel zippers on a single fabric tape. By setting multiple fabric tapes and setting zippers at the connection points of two fabric tapes, it actually uses two or more separate zippers, requiring two or more operations to close the three layers, and cannot be closed in one go. Utility Model Content

[0005] In view of this, a three-way zipper that is easy to operate, compact in structure, low in cost and space-saving is provided. By adopting a unique zipper head structure, it can simultaneously pull and close three chain teeth at one time, saving time and effort, making it convenient and quick, and saving materials.

[0006] A three-way zipper includes a zipper head and a zipper strip. The zipper strip includes two horizontal zipper teeth and a third zipper tooth. The teeth of the two horizontal zipper teeth face each other and can be interlocked sequentially to form a whole. Each tooth of the two horizontal zipper teeth has a C-shaped groove. The C-shaped grooves of two corresponding teeth of the two horizontal zipper teeth engage to form a slot. The third zipper tooth has multiple third teeth connected together. Each third tooth has a locking tooth that can engage with the slot under the pressure of the zipper head. The zipper head has two first zipper grooves and a third zipper groove. The two first zipper grooves can respectively pass through the two horizontal zipper teeth and make the two horizontal zipper teeth interlock. The third zipper grooves can respectively pass through the third zipper teeth and make the locking teeth of the third zipper teeth engage with the slot.

[0007] Preferably, the two first chain grooves and the third chain groove are arranged in a triangular pattern; the two first chain grooves and the third chain groove together form an inner cavity that can accommodate the two transverse zipper teeth and the third zipper tooth; the two first chain grooves are located side by side at the bottom of the inner cavity of the zipper head while the third chain groove is located at the top of the inner cavity of the zipper head; the inner cavity is triangular.

[0008] Preferably, one end of the zipper head is the tooth inlet end and the other end is the tooth outlet end. The two first zipper grooves are combined to form a bottom groove. The bottom groove has a tapered structure from the tooth inlet end to the tooth outlet end. The two first zipper grooves are a left zipper groove and a right zipper groove. The left zipper groove is defined by a left side wall and a bottom wall. The right zipper groove is defined by a right side wall and the same bottom wall. The common bottom wall of the two zipper grooves and the left and right side wall define the bottom groove. When the two transverse zipper teeth are pulled together, they pass through the bottom groove.

[0009] Preferably, one end of the zipper head is the tooth inlet end and the other end is the tooth outlet end. The third zipper groove has a downward curved structure from the tooth inlet end to the tooth outlet end. The zipper head limits the top groove wall of the third zipper groove to have a downward slope structure from the tooth inlet end to the tooth outlet end so that the third zipper tooth is pressed into the corresponding slot under the oblique limiting action of the top groove wall.

[0010] Preferably, the two first chain slots and the third chain slot have their chain teeth on the same side arranged in a divergent structure at the inlet end, while the chain teeth on the other side are constricted and connected to form a triangular outlet.

[0011] Preferably, the zipper head includes a base, two sidewalls, a top, and a spacer post. The two sidewalls, the base, and the bottom surface of the top define two first zipper grooves. The spacer post connects the bottom front end of the top to the front end of the base and is located between the two first zipper grooves.

[0012] Preferably, the teeth of each of the transverse zipper teeth are guided into the corresponding first zipper groove by a side wall and a side of the spacer post; the two side walls are respectively provided with first grooves extending along the zipper direction to pass through the fabric strips connecting the transverse zipper teeth; the top is provided with a third groove extending along the zipper direction on the top groove wall of the third zipper groove to pass through the fabric strips connecting the third zipper teeth.

[0013] Preferably, the third chain groove is formed on the top bottom surface and communicates with the two first chain grooves; the hollow position of the third chain groove corresponds vertically to the spacer support, the top of the spacer support is provided with a support portion that limits the bottom front end of the third chain groove, the two sides of the third chain groove are limited by two third side groove walls, the bottom front end is limited by the support portion, and the top side is limited by the top groove wall.

[0014] Preferably, the two sides of the spacer support are arc-shaped sides, which are arcs along the zipper direction. The two arc-shaped sides meet at the rear end of the spacer support. The meeting point at the rear end of the spacer support is the meeting point of the front ends of the two first chain grooves and the starting engagement point of the two transverse zipper teeth. The top end of the spacer support is provided with a support portion that defines the bottom front end of the third chain groove. The support portion has a downward slope trend from the outside to the inside or from the front end to the rear end. The top surface of the support portion is a downward slope surface. The rear end of the downward slope surface corresponds to the meeting point at the rear end of the spacer support and is the meeting point of the third chain groove with the front ends of the two first chain grooves and the meeting point of the three zipper teeth.

[0015] Preferably, the third chain groove is located above the middle of the two first chain grooves, the third chain groove merges and communicates with the two first chain grooves at the rear end, and the third chain groove and the two first chain grooves form a convex opening at the rear end, the size of the convex opening is set to be able to pass through the three zipper teeth that mesh in a triangular shape.

[0016] In the aforementioned three-way zipper, three zipper grooves are set on the same zipper head, allowing the zipper teeth in three directions to pull simultaneously in the same direction. Simultaneously, two rows of C-shaped grooves are set on the left and right sides of the two horizontal zipper teeth. These C-shaped grooves form a locking groove when engaged, and the third zipper tooth is pressed and locked into this groove by the third zipper groove on the zipper head, completing the synchronous and point-to-point engagement of the three zipper teeth. Therefore, the entire zipper structure is convenient to use, quick and efficient to operate, and requires only one zipper head and three zipper teeth. Its structure is simple and compact, using less material compared to multi-layer zippers, saving material and cost. It can be widely used in various applications requiring two or more zippers to simultaneously engage two or three layers of fabric. Attached Figure Description

[0017] Figure 1This is a three-dimensional exploded structural diagram of a three-way combined zipper provided in an embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of a three-way zipper in the wave propagation direction provided by an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of a three-way zipper in the direction of heat conduction, provided by an embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of a vacuum oven used in the three-way bonded zipper preparation method of this utility model embodiment.

[0021] The markings in the diagram are as follows: 10, zipper strip; 101, C-groove; 101a, left C-groove; 101b, right C-groove; 103, slot; 104, entry end; 105, zipper tooth output end; 106, convex opening; 11, horizontal zipper tooth; 13, first zipper groove; 20, zipper head; 30, third zipper tooth; 303, third zipper tooth; 33, third zipper groove; 35, slot tooth; 40, spacer support; 43, top end; 45, curved side; 46, rear end; 50, base; 501, downslope; 51, top; 52, left side wall; 59, right side wall; 53, bottom wall; 54, support part; 55, top groove wall; 56, inner cavity. Detailed Implementation

[0022] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0023] Please see Figures 1 to 4 This utility model embodiment provides a three-way connecting zipper, which includes a zipper head 20 and a zipper strip 10. The zipper strip 10 includes two horizontal zipper teeth 11 and a third zipper tooth 30. The teeth of the two horizontal zipper teeth 11 face each other and can be sequentially interlocked to form a whole. Each tooth of the two horizontal zipper teeth 11 has a C-shaped groove 101. The C-shaped grooves 101 of the corresponding two opposing teeth of the two horizontal zipper teeth 11 engage to form a slot 103. Figure 3As shown, the C-shaped groove 101 has a left C-shaped groove 101a and a right C-shaped groove 101b. The left C-shaped groove 101a and the right C-shaped groove 101b connected in sequence together form a slot 103 extending along the zipper direction. The third zipper tooth 30 has multiple third chain teeth 303 connected in one piece. Each third chain tooth 303 has a locking tooth 35 that can engage with the slot 103 under the pull and pressure of the zipper head 20. The zipper head 20 is provided with two first chain grooves 13 and a third chain groove 33. The two first chain grooves 13 can respectively pass through the two horizontal zipper teeth 11 and make the two horizontal zipper teeth 11 interlock. The third chain groove 33 can respectively pass through the third zipper tooth 30 and make the locking tooth 35 of the third chain tooth 303 engage with the slot 103.

[0024] Preferably, the two first chain grooves 13 and the third chain groove 33 are arranged in a triangular pattern; the two first chain grooves 13 and the third chain groove 33 together form an inner cavity 56 that can accommodate the two transverse zipper teeth 11 and the third zipper teeth 30; the two first chain grooves 13 are located side by side at the bottom of the inner cavity 56 of the zipper head 20, while the third chain groove 33 is located at the top 51 of the inner cavity 56 of the zipper head 20; as shown Figure 4 As shown, the inner cavity 56 is preferably in a triangular shape.

[0025] Preferably, one end of the zipper head 20 is a tooth inlet end 104 and the other end is a tooth outlet end 105. The two first zipper grooves 13 are combined to form a bottom groove 55. The bottom groove 55 has a tapered structure from the tooth inlet end 104 to the tooth outlet end 105. The two first zipper grooves 13 are a left zipper groove and a right zipper groove. The left zipper groove is defined by a left side wall 52 and a bottom wall 53. The right zipper groove is defined by a right side wall 59 and the same bottom wall 53. The common bottom wall 53 of the two grooves and the left and right side groove walls 52 and 59 define the bottom groove 55. When the two transverse zipper teeth 11 are pulled together, they pass through the bottom groove 55.

[0026] Preferably, one end of the zipper head 20 is a tooth inlet end 104 and the other end is a tooth outlet end 105, such as... Figure 2 and 3 As shown, the third chain groove 33 has a downward-curving structure from the chain tooth inlet end 104 to the chain tooth outlet end 105. The top wall of the third chain groove 33, defined by the zipper head 20, has a downward-sloping structure from the chain tooth inlet end 104 to the chain tooth outlet end 105, so that the third zipper tooth 30 is pressed into the corresponding slot 103 under the oblique limiting action of the top wall, thereby enabling the three zipper teeth to be simultaneously squeezed and engaged together. Figure 3 As shown, the three zipper teeth pass through the two first chain grooves 13 and the third chain groove 33 respectively, and the two grooves gradually narrow from the tooth entry end 104 to the tooth output end 105. The curvature of the narrowing is basically the same.

[0027] like Figure 2 and 3 As shown, in some preferred embodiments, the two first chain grooves 13 and the third chain groove 33 have their chain teeth entering at the same side 104 in a divergent arrangement, while the chain teeth exiting at the other side 105 are converging and connected to form a triangular outlet. The triangular outlet is adapted to the structural shape of the two transverse zipper teeth 11 and the third zipper tooth 30 integrated together. That is, when passing through the triangular outlet, the three zipper teeth are integrated and can pass smoothly through the triangular outlet, or the three zipper teeth can mesh together under the pressure of the inner walls of the triangular outlet in each direction.

[0028] Furthermore, the zipper head 20 includes a base 50, two sidewalls 52, a top 51, and a spacer post 40. The two sidewalls 52, the base 50, and the bottom surface of the top 51 define two first chain grooves 13. The spacer post 40 connects the bottom front end of the top 51 to the front end of the base 50 and is located between the two first chain grooves 13.

[0029] Preferably, the teeth of each of the transverse zipper teeth 11 are guided into the corresponding first zipper groove 13 by a side of a corresponding sidewall 52 and a spacer post 40; the two sidewalls 52 are respectively provided with first grooves extending along the zipper direction to pass through the fabric strips connecting the transverse zipper teeth 11; the top 51 is provided with a third groove extending along the zipper direction on the top groove wall 55 of the third zipper groove 33 to pass through the fabric strips connecting the third zipper teeth 30.

[0030] In some preferred embodiments, the third chain groove 33 is formed on the bottom surface of the top 51 and communicates with the two first chain grooves 13; the hollow position of the third chain groove 33 corresponds vertically to the spacer support 40, the top 43 of the spacer support 40 is provided with a support portion 54 that defines the bottom front end of the third chain groove 33, the two sides of the third chain groove 33 are defined by two third side groove walls, the bottom front end is defined by the support portion 54, and the top side is defined by the top groove wall 55.

[0031] Preferably, the two sides of the spacer post 40 are arc-shaped sides 45, which are arcs along the zipper direction. The two arc-shaped sides 45 meet at the rear end 46 of the spacer post 40. The meeting point of the rear end 46 of the spacer post 40 is the meeting point of the front ends of the two first chain grooves 13 and the starting engagement point of the two transverse zipper teeth 11. The top end 43 of the spacer post 40 is provided with a support portion 54 that defines the bottom front end of the third chain groove 33. The support portion 54 slopes down from the outside to the inside or from the front end to the rear end 46. The top surface of the support portion 54 is a downsloping surface 501. The rear end 46 of the downsloping surface 501 corresponds to the meeting point of the rear end 46 of the spacer post 40 and is the meeting point of the third chain groove 33 and the front ends of the two first chain grooves 13 and the meeting point of the three zipper teeth.

[0032] In some specific embodiments, the third chain groove 33 is located above the middle of the two first chain grooves 13. The third chain groove 33 and the two first chain grooves 13 converge and communicate at the rear end 46. The third chain groove 33 and the two first chain grooves 13 form a convex opening 106 at the confluence of the rear end 46. The size of the convex opening 106 is set to be able to pass through the three zipper teeth that mesh in a triangular pattern.

[0033] In the aforementioned three-way zipper, three zipper grooves are set on the same zipper head, allowing the zipper teeth in three directions to pull simultaneously in the same direction. Simultaneously, two rows of C-shaped grooves are set on the left and right sides of the two horizontal zipper teeth. These C-shaped grooves form a locking groove when engaged, and the third zipper tooth is pressed and locked into this groove by the third zipper groove on the zipper head, completing the synchronous and point-to-point engagement of the three zipper teeth. Therefore, the entire zipper structure is convenient to use, quick and efficient to operate, and requires only one zipper head and three zipper teeth. Its structure is simple and compact, using less material compared to multi-layer zippers, saving material and cost. It can be widely used in various applications requiring two or more zippers to simultaneously engage two or three layers of fabric.

[0034] It should be noted that this utility model is not limited to the above-described embodiments. Based on the inventive spirit of this utility model, those skilled in the art can make other changes, and all such changes should be included in this utility model.

[0035] Within the scope of the protection requested.

Claims

1. A three-way zipper, comprising a zipper head and a zipper strip, characterized in that, The zipper includes two horizontal zipper teeth and a third zipper tooth. The teeth of the two horizontal zipper teeth face each other and can be interlocked sequentially to form a whole. Each tooth of the two horizontal zipper teeth has a C-shaped groove. The C-shaped grooves of the corresponding two teeth of the two horizontal zipper teeth mesh to form a slot. The third zipper tooth has multiple third teeth connected together. Each third tooth has a locking tooth that can engage with the slot under the pressure of the zipper head. The zipper head is provided with two first grooves and a third groove. The two first grooves can respectively pass through the two horizontal zipper teeth and make the two horizontal zipper teeth interlock. The third grooves can respectively pass through the third zipper teeth and make the locking teeth of the third teeth engage with the slots.

2. The three-way zipper as described in claim 1, characterized in that, The two first chain grooves and the third chain groove are arranged in a triangular pattern; the two first chain grooves and the third chain groove together form an inner cavity that can accommodate the two horizontal zipper teeth and the third zipper tooth; the two first chain grooves are located side by side at the bottom of the inner cavity of the zipper head while the third chain groove is located at the top of the inner cavity of the zipper head; the inner cavity is triangular in shape.

3. The three-way zipper as described in claim 1, characterized in that, One end of the zipper head is the tooth inlet end and the other end is the tooth outlet end. The two first zipper grooves combine to form a bottom groove. The bottom groove has a tapering structure from the tooth inlet end to the tooth outlet end. The two first zipper grooves are a left zipper groove and a right zipper groove. The left zipper groove is defined by a left side wall and a bottom wall. The right zipper groove is defined by a right side wall and the same bottom wall. The common bottom wall of the two zipper grooves and the left and right side wall define the bottom groove. When the two transverse zipper teeth are pulled together, they pass through the bottom groove.

4. The three-way zipper as described in claim 1, characterized in that, One end of the zipper head is the tooth inlet end and the other end is the tooth outlet end. The third zipper groove has a downward curved structure from the tooth inlet end to the tooth outlet end. The zipper head limits the top groove wall of the third zipper groove to have a downward slope structure from the tooth inlet end to the tooth outlet end so that the third zipper tooth is pressed into the corresponding slot under the oblique limiting action of the top groove wall.

5. The three-way zipper as described in claim 1, characterized in that, The first chain groove and the third chain groove have their teeth on the same side arranged in a divergent structure at the inlet end, while on the other side, the teeth at the outlet end are constricted and connected to form a triangular outlet.

6. The three-way zipper as described in claim 1, characterized in that, The zipper head includes a base, two sidewalls, a top, and a spacer post. The two sidewalls, the base, and the bottom surface of the top define two first zipper grooves. The spacer post connects the bottom front end of the top to the front end of the base and is located between the two first zipper grooves.

7. The three-way zipper as described in claim 6, characterized in that, Each of the horizontal zipper teeth is guided by a corresponding side wall and a spacer support to enter the corresponding first zipper groove; the two side walls are respectively provided with first grooves extending along the zipper direction to pass through the fabric strips connecting the horizontal zipper teeth; the top is provided with a third groove extending along the zipper direction on the top groove wall of the third zipper groove to pass through the fabric strips connecting the third zipper teeth.

8. The three-way zipper as described in claim 6, characterized in that, The third chain groove is formed on the top bottom surface and communicates with the two first chain grooves; the hollow position of the third chain groove corresponds vertically to the spacer column, and the top of the spacer column is provided with a support portion that limits the bottom front end of the third chain groove. The two sides of the third chain groove are limited by two third side groove walls, the bottom front end is limited by the support portion, and the top side is limited by the top groove wall.

9. The three-way zipper as described in claim 6, characterized in that, The two sides of the spacer support are arc-shaped, and the arc-shaped sides are arc-shaped along the zipper direction. The two arc-shaped sides meet at the rear end of the spacer support. The rear end meeting point of the spacer support is the meeting point of the front ends of the two first chain grooves and the starting engagement point of the two transverse zipper teeth. The top of the spacer support is provided with a support portion that defines the bottom front end of the third chain groove. The support portion has a downward trend from the outside to the inside or from the front end to the rear end. The top surface of the support portion is a downward slope surface. The rear end of the downward slope surface corresponds to the rear end meeting point of the spacer support and is the meeting point of the third chain groove with the front ends of the two first chain grooves and the meeting point of the three zipper teeth.

10. The three-way zipper as described in claim 1, characterized in that, The third chain groove is located above the middle of the two first chain grooves. The third chain groove merges and communicates with the two first chain grooves at the rear end. The third chain groove and the two first chain grooves form a convex opening at the rear end. The size of the convex opening is set to allow the three zipper teeth that mesh in a triangular pattern to pass through.

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