Split tail-free zipper tail structure and zipper

Abstract

The utility model discloses a split tail-free zipper tail structure and a zipper, which belong to the technical field of zippers and comprise a square component and a bolt component which are matched with each other. An elastic clamping block with deformability is arranged in the square block component, and an abutting notch matched with the elastic clamping block is formed in the front end of the plug pin component. When the plug pin component is inserted into the square block component, the elastic clamping block generates elastic deformation through the guide inclined face until the abutting notch reaches the locking position of the elastic clamping block, the elastic clamping block recovers deformation and forms irreversible mechanical interlocking with the abutting notch, and when the elastic clamping block is subjected to external force exceeding a threshold value, the elastic clamping block and the abutting notch are locked. And when the elastic clamping block is broken, the tail system structure is converted into an open tail state. According to the split type tail system structure, the transportation cost is greatly reduced, the assembly operation is convenient and fast due to the design of the plug pins and the guide inclined planes, and the contradiction between the transportation economy and the assembly reliability is effectively balanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to zip fastener technical field, concretely relates to a split type no tail zip fastener tail structure and zip fastener. BACKGROUND

[0002] With the intelligent development of modern manufacturing industry, as a basic connecting piece, the application scene of zip fastener has been expanded from the traditional luggage, clothing field to emerging fields such as electronic products, medical equipment, VR / AR equipment. Especially in the field of consumer electronics, such as the design of precise containers such as VR glasses box, the functional requirements of users for zip fastener are increasing, not only it is required to have reliable opening and closing performance, but also it needs to adapt to special scenes such as split transportation and modular assembly. Under this background, how to realize the quick switching of zip fastener structure between "split transportation" and "integrated closure" mode has become a technical problem to be solved.

[0003] At present, zip fastener tail structure is mainly divided into no tail zip fastener and open tail zip fastener. The no tail zip fastener realizes complete closure through the fixed structure of the tail part, which is suitable for the scene that needs permanent connection. The open tail zip fastener allows the two side tapes to be completely separated through the separation design of the latch and the block, which is suitable for the scene that needs to be frequently disassembled. However, the functions of the two types of zip fasteners in the prior art are generally independent of each other, and it is difficult to realize dynamic switching. Taking VR glasses box as an example, the traditional design adopts an integrated structure with double pulls, which can realize the closure of the upper and lower covers, but occupies a large space during transportation. If a split type design is adopted, the existing zip fastener tail structure cannot meet the needs of users to quickly assemble themselves to form a reliable integrated structure.

[0004] Therefore, in view of the problems existing in the prior art, it is urgent to provide a split type no tail zip fastener tail structure and zip fastener. SUMMARY

[0005] In view of the problems in the related art, the utility model provides a split type no tail zip fastener tail structure and zip fastener to solve the technical problems that the existing tail structure is difficult to realize the mode conversion of split transportation and integrated closure.

[0006] The technical scheme of the utility model is realized as follows: a split type no tail zip fastener tail structure, comprising a block member and a latch member matched with each other.

[0007] The block member is provided with an elastic clamping block with deformation ability, and the elastic clamping block has a guide inclined surface facing the insertion direction of the latch member.

[0008] The latch member is provided with a resisting notch matched with the elastic clamping block at the front end, and the depth direction of the resisting notch is arranged at an acute angle with the insertion direction of the latch member.

[0009] When the plug-in member is inserted into the block member, the elastic clamping block is elastically deformed by the guide slope, and when the abutting recess reaches the locking position of the elastic clamping block, the elastic clamping block restores the deformation and forms irreversible mechanical interlocking with the abutting recess.

[0010] The utility model discloses a split tail structure, the transportation volume is greatly reduced compared with the traditional integrated structure, and transportation cost is effectively reduced.

[0011] As a further improvement of the above scheme, the elastic clamping block is configured to break when subjected to an external force exceeding a predetermined threshold, causing the tail structure to change to an open-tail configuration.

[0012] In some special cases, users need to convert the mechanically interlocked tailless zipper into an ordinary open-tail configuration. For example, in outdoor equipment rental scenarios, the zipper of the rented equipment is in a closed and locked state when not in use, and users cannot open it non-destructively. Only after violent separation can it be taken out for use. At this time, the zipper changes to an open-tail configuration, thereby forming a physical use trace. With the "one-time tailless" structure, maintenance personnel can quickly identify whether the equipment has been illegally opened, greatly improving the efficiency of inspections.

[0013] In addition, the "one-time tailless" structure also has practical application value in preventing secondary use. For example, when medical staff wear protective clothing, the zipper remains in a tailless sealed state; when taking off, it is manually separated violently to switch to an open-tail configuration. After the zipper changes to an open-tail configuration, a fracture is generated on the surface of the broken block member, forming physical evidence of use, effectively preventing the reuse of protective clothing.

[0014] Through the cooperation design of the elastic clamping block and the abutting recess, irreversible mechanical interlocking is formed in the normal use state to achieve the tailless function; only when subjected to abnormal external force, the elastic clamping block breaks and automatically switches to an open-tail mode. This dual-state adaptive switching breaks through the limitations of traditional zipper configurations, realizes dynamic transformation of functional configurations, and meets the multi-scenario needs of products in different use stages.

[0015] As a further improvement of the above scheme, the elastic clamping block is provided with a predetermined breaking gap at or near the root, and the cross-sectional area of the predetermined breaking gap is smaller than that of the main body of the elastic clamping block. By setting a predetermined breaking gap with a smaller cross-sectional area at or near the root of the elastic clamping block, the breaking position can be accurately controlled, ensuring that the breaking occurs at the stress-concentrated gap, improving the predictability and reliability of the elastic clamping block breaking.

[0016] As a further improvement of the above scheme, the predetermined fracture notch is a V-shaped notch or a U-shaped notch, and the notch depth is 1 / 3-1 / 2 of the thickness of the elastic block root. The notch shape is configured as a V-shaped or U-shaped notch, which optimizes stress concentration and ensures that the fracture starts from the bottom of the notch, while also facilitating processing and ensuring that the fracture threshold is stable and controllable, thereby improving product consistency and yield.

[0017] As a further improvement of the above scheme, the front end of the plug member is provided with a guide chamfer, and the inclination angle of the guide chamfer matches the guide slope of the elastic block.

[0018] As a further improvement of the above scheme, the block member is provided with a guide groove, and the width direction size of the guide groove is 0.1-0.5mm larger than the thickness of the plug member; the rear end of the block is also provided with a guide pin, and the side of the guide pin facing the guide groove matches the plug member.

[0019] By matching the inclination angle of the guide chamfer at the front end of the plug member with the slope of the elastic block, the plug member and the block slope are accurately aligned, the insertion resistance is significantly reduced, and the deviation and jamming are avoided. Further, the width of the guide groove is 0.1-0.5mm larger than the thickness of the plug member, which not only retains the guide gap to compensate for the assembly tolerance, but also limits the lateral displacement to prevent the plug member from shaking. The two work together to improve the smoothness of the insertion and the fitting accuracy, reduce the wear and tear of the plug and the block, and reduce the difficulty of assembly and enhance the structural reliability.

[0020] As a further improvement of the above scheme, the block member and the plug member are respectively fixed to the end portions of two independent chains, and the two independent chains are kept separate in the non-use state; each independent chain is provided with a chain tooth, which includes a nylon chain tooth, a resin chain tooth or a metal chain tooth. The split tail structure facilitates the split transportation of the product, the transportation volume is greatly reduced compared with the traditional integrated structure, and the transportation cost is effectively reduced.

[0021] As a further improvement of the above scheme, the end of the plug member and / or the end of the block member is provided with a false tooth part which is profiled with the chain tooth row.

[0022] As a further improvement of the above scheme, the tooth profile of the false tooth part forms a continuous transition with the meshing surface of the adjacent chain tooth.

[0023] By adding a false tooth part which is profiled with the chain tooth row at the end of the plug member and / or the block member, the chain tooth gap is filled by the false tooth when the chain belts are connected, forming a smooth transition and effectively dispersing the meshing stress to avoid local deformation or jamming; further limiting the continuous transition of the tooth profile of the false tooth with the meshing surface of the adjacent chain tooth can eliminate the meshing mutation, reduce the biting impact noise, enhance the guide and alignment accuracy between the chain tooth rows, improve the fitting stability and transmission continuity, significantly reduce the abnormal wear and tear, and prolong the service life of the chain belt.

[0024] A zipper comprising a split tail structure as described above, the zipper comprising two independent chains, the ends of the two independent chains being respectively provided with a block member and a latch member; the two independent chains are kept separate in a non-use state, and are connected through the tail structure in a use state, and when an external force exceeding a preset threshold is applied, the elastic clamping block breaks, causing the tail structure to change into a separable open tail form.

[0025] Advantages:

[0026] The split tail structure facilitates split transportation of the product, greatly reducing the transportation volume compared to the traditional integrated structure, effectively reducing transportation costs. At the same time, the latch member and the guide slope design make the assembly operation convenient, and the irreversible interlocking property of the elastic clamping block ensures a stable structure after assembly, significantly improving user operation convenience and effectively balancing the contradiction between transportation economy and assembly reliability. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of the tail structure of embodiment 1;

[0028] Figure 2 is a cross-sectional view of the tail structure of embodiment 1;

[0029] Figure 3 is a working principle diagram of the tail structure of embodiment 1;

[0030] Figure 4 is a structural schematic diagram of the tail structure of embodiment 2;

[0031] Figure 5 is a perspective view of the tail structure of embodiment 3;

[0032] Figure 6 is a cross-sectional view of the tail structure of embodiment 3;

[0033] Reference signs:

[0034] 1, block member; 11, elastic clamping block; 111, guide slope; Q1, predetermined breaking gap; 12, guide groove; 13, guide pin;

[0035] 2, latch member; 21, abutting notch; 22, guide chamfer;

[0036] 3, denture part;

[0037] 4, connecting part. DETAILED DESCRIPTION

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] In the description of this utility model, it should be understood that the term "several" means "at least one", and the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Example 1:

[0041] like Figures 1-3 As shown, this embodiment provides a split-type tail-end zipper structure, including a square component 1 and a pin component 2 that cooperate with each other. The square component 1 and the pin component 2 are respectively fixed to the ends of two independent chain straps, which remain separated when not in use. The split-type tail-end structure facilitates the separate transportation of products, significantly reducing the transportation volume compared to the traditional one-piece structure, effectively lowering transportation costs. Each independent chain strap is provided with chain teeth; in this embodiment, nylon chain teeth are used. Both the square component 1 and the pin component 2 have a connecting portion 4 extending along the width of the chain strap, and are securely connected to the two independent chain straps through the connecting portion 4.

[0042] In this embodiment, the front end of the pin component 2 is provided with a guide chamfer 22, and the inclination angle of the guide chamfer 22 matches the guide slope 111 of the elastic locking block 11. In this embodiment, the block component 1 is provided with a guide groove 12, and the width dimension of the guide groove 12 is 0.1-0.5mm larger than the thickness of the pin component 2; the rear end of the block is also provided with a guide pin 13, and the side of the guide pin 13 facing the guide groove 12 matches the pin component 2.

[0043] By matching the angle of the front end guide chamfer 22 of the plug member 2 with the slope of the elastic block 11, the plug member 2 and the block slope are accurately aligned, the insertion resistance is significantly reduced, and the skew jamming is avoided. Further, the guide slot 12 is set to be 0.1-0.5mm wider than the thickness of the plug member 2, and the guide pin 13 is matched with the plug member 2, which not only compensates for the assembly tolerance of the guide gap, but also limits the lateral displacement to prevent the plug member 2 from shaking. The two work together to improve the smoothness of the insertion and the fitting accuracy, reduce the wear of the insertion and extraction, and reduce the assembly difficulty and enhance the structural reliability.

[0044] The block member 1 is provided with an elastic block 11 with deformation ability, and the elastic block 11 has a guide slope 111 facing the insertion direction of the plug member 2. The front end of the plug member 2 is provided with a resisting notch 21 matched with the elastic block 11, and the depth direction of the resisting notch 21 is set at an acute angle α with the insertion direction of the plug member 2. In this embodiment, the acute angle α can be 24°, 27°, 30°, 33° or 37°. When the plug member 2 is inserted into the block member 1, the elastic block 11 deforms elastically through the guide slope 111, until the resisting notch 21 reaches the locking position of the elastic block 11, the elastic block 11 restores the deformation and forms an irreversible mechanical interlocking with the resisting notch 21. The irreversible mechanical interlocking means that the elastic block 11 and the resisting notch 21 form a non-detachable connection to realize the conversion between the split transportation and the integrated closed mode.

[0045] In this embodiment, the elastic block is configured to break when subjected to an external force exceeding a predetermined threshold, causing the tail structure to change to an open tail mode. When the mechanical interlocking is released, the elastic block 11 forms a permanent open structure at the fracture surface, causing the tail structure to change to a conventional open tail mode. The depth direction of the resisting notch 21 is set at an acute angle α with the insertion direction of the plug, which is beneficial to the smooth introduction of the plug member 2, and also facilitates the breakage of the elastic block 11 near the root when the plug member 2 is violently pulled out.

[0046] It should be noted that in some special cases, the user needs to convert the mechanical interlocking zipper into a common open tail mode. For example, in the outdoor equipment rental scene application, the zipper of the rental equipment is in a closed and locked state when it is not enabled, and the user cannot open it non-destructively. Only after violent separation, it can be taken out for use. At this time, the zipper changes to an open tail mode, thereby forming a physical use trace. Using the "one-time no tail" structure, the operation and maintenance personnel can quickly identify whether the equipment has been opened illegally, greatly improving the inspection efficiency.

[0047] In addition, the "one-time use" structure also has practical application value in preventing secondary use. For example, when medical staff wear protective clothing, the zipper remains in a sealed state. When taking off, the hands are violently separated to switch to an open end form. After the zipper changes to an open end form, the surface of the broken square block member 1 generates a fracture, forming physical evidence of use, effectively preventing the reuse of protective clothing.

[0048] Through the cooperation design of the elastic clamping block 11 and the abutting notch 21, an irreversible mechanical interlocking is formed in the normal use state to realize the no-end function. Only when subjected to abnormal external force, the elastic clamping block 11 breaks and automatically switches to an open end mode. This double-state adaptive switching breaks through the solidification limit of traditional zippers, realizes dynamic transformation of the function form, and meets the multi-scene needs of the product in different use stages.

[0049] In this embodiment, the end of the plug member 2 and / or the end of the square block member 1 is provided with a false tooth part 3 which is profiled with the chain tooth row. The tooth profile of the false tooth part 3 forms a continuous transition with the meshing surface of the adjacent chain tooth. By adding a false tooth part 3 profiled with the chain tooth row at the end of the plug member 2 and / or the square block member 1, the false tooth fills the gap between the chain teeth when the chain is connected, forming a smooth transition, effectively dispersing the meshing stress and avoiding local deformation or jamming; further limiting the continuous transition of the false tooth profile and the meshing surface of the adjacent chain tooth, the meshing mutation can be eliminated, the biting impact noise can be reduced, and the guiding and positioning accuracy between the chain tooth rows can be enhanced, the cooperation stability and transmission continuity can be improved, the abnormal wear can be significantly reduced and the service life of the chain can be prolonged.

[0050] The embodiment also provides a zipper, which can be a nylon zipper, a resin zipper or a metal zipper, comprising a split no-end zipper tail structure as described above. The zipper comprises two independent chain belts, and the ends of the two independent chain belts are respectively provided with square block members 1 and plug members 2. Among them, the square block members 1 and the plug members 2 of the nylon zipper are provided with connecting parts 4 extending along the width direction of the chain belt, and are connected and stabilized with the two independent chain belts through the connecting parts 4.

[0051] The two independent chain belts remain separated in the non-use state, are connected through the tail structure in the use state, and when subjected to external force exceeding the preset threshold, the elastic clamping block 11 breaks, so that the tail structure changes to a separable open end form.

[0052] Through the above scheme of the utility model, in the specific application: taking the AR glasses box as an example, through the split tail structure, the upper cover and the lower cover can be set in a split mode, and the transportation volume is greatly reduced after mutual stacking compared with the traditional integrated structure, thereby effectively reducing the transportation cost. When transported to the customer, the design of the bolt member 2 and the guide inclined surface 111 makes the assembly operation convenient, and the irreversible interlocking property of the elastic clamping block 11 ensures that a stable structure can be formed after assembly by workers, thereby effectively balancing the contradiction between transportation economy and assembly reliability. Through the matching design of the elastic clamping block 11 and the abutting recess 21, irreversible mechanical interlocking is formed in the normal use state to realize the tail opening function; only when subjected to abnormal external force, the elastic clamping block 11 is broken to automatically switch to the open tail mode, thereby breaking through the solidification limitation of the traditional zipper shape, realizing dynamic transformation of the functional shape, and meeting the multi-scene requirements of the product in different use stages.

[0053] Embodiment 2:

[0054] As Figure 4 shown, one of the embodiments of the utility model, the main technical scheme of the embodiment is the same as that of embodiment 1, and the features not explained in the embodiment adopt the explanation in embodiment 1, which will not be repeated here. The difference between the embodiment and embodiment 1 is that:

[0055] In the embodiment, the elastic clamping block 11 is provided with a predetermined fracture gap Q1 at or near the root, and the cross-sectional area of the predetermined fracture gap Q1 is smaller than that of the main body of the elastic clamping block 11. By providing the predetermined fracture gap Q1 with a smaller cross-sectional area at or near the root of the elastic clamping block 11, the fracture position can be accurately controlled, ensuring that the fracture occurs at the stress-concentrated gap, thereby improving the predictability and reliability of the fracture of the elastic clamping block 11.

[0056] In the embodiment, the predetermined fracture gap Q1 is a V-shaped gap, and the gap depth is 1 / 3-1 / 2 of the root thickness of the elastic clamping block 11. The reasonable configuration of the gap shape ensures that the fracture starts from the bottom of the gap, and also facilitates processing, ensures that the fracture threshold is stable and controllable, and improves product consistency and yield.

[0057] Embodiment 3:

[0058] As Figure 5 and Figure 6 shown, one of the embodiments of the utility model, the main technical scheme of the embodiment is the same as that of embodiment 1, and the features not explained in the embodiment adopt the explanation in embodiment 1, which will not be repeated here. The difference between the embodiment and embodiment 1 is that:

[0059] The chain teeth adopt resin chain teeth. The block member 1 and the bolt member 2 are directly connected with two independent chain belts respectively.

[0060] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A split tailless zipper tail structure, comprising a block member and a plug member that cooperate with each other; characterized in that: the block member is provided with an elastic clamping block with deformation ability, the elastic clamping block has a guide slope towards the insertion direction of the plug member; the front end of the plug member is provided with a contact notch matched with the elastic clamping block, the depth direction of the contact notch is arranged at an acute angle with the insertion direction of the plug member; when the plug member is inserted into the block member, the elastic clamping block deforms elastically through the guide slope, until the contact notch reaches the locking position of the elastic clamping block, the elastic clamping block restores deformation and forms irreversible mechanical interlocking with the contact notch. The elastic clamping block is configured to break when subjected to an external force exceeding a preset threshold, causing the tail structure to change to an open tail form. The elastic clamping block is provided with a predetermined breaking notch at or near the root, the cross-sectional area of the predetermined breaking notch is smaller than that of the main body of the elastic clamping block. The predetermined breaking notch is a V-shaped notch or a U-shaped notch, and the notch depth is 1 / 3-1 / 2 of the root thickness of the elastic clamping block.

2. The separable fastener structure of claim 1, wherein The front end of the plug member is provided with a guide chamfer, and the inclination angle of the guide chamfer matches the guide slope of the elastic clamping block.

3. The separable fastener system of claim 2, wherein the first and second fastener elements are configured to be engaged by a single slider. The block member is provided with a guide groove, the width direction size of the guide groove is 0.1-0.5mm larger than the thickness of the plug member; the rear end of the block is also provided with a guide pin, one side of the guide pin towards the guide groove matches the plug member.

4. The separable fastener system of claim 3, wherein the first and second fastener elements are disposed on a first and second fastener tape, respectively. The block member and the plug member are respectively fixed to the end of two independent chain belts, the two independent chain belts remain separated in the non-use state; each independent chain belt is provided with a chain tooth, the chain tooth includes a nylon chain tooth, a resin chain tooth or a metal chain tooth.

5. The separable fastening system of claim 1 wherein, The end of the plug member and / or the end of the block member is provided with a false tooth part matched with the chain tooth row.

6. The separable fastening system of claim 1 wherein, The tooth profile of the false tooth part forms a continuous transition with the meshing surface of the adjacent chain tooth.

7. The separable fastening system of claim 1 wherein, The split tailless zipper tail structure according to any one of claims 1-9.

8. The separable fastener system of claim 7, wherein the first and second fastener elements are formed from a single piece of material. ​ 9. The separable fastener system of claim 8, wherein the first and second fastener elements are disposed on a first and second fastener tape, respectively. ​ 10. A zipper characterized by, ​

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