Soft zipper

Abstract

The utility model discloses a soft zipper which comprises a flexible belt and a plurality of zipper teeth, and each zipper tooth is provided with a tooth base, a meshing tooth table, a tooth neck and a tooth head. The two sides of the tooth base are connected with the flexible belt, the tooth neck and the tooth head respectively, the width of the tooth base and the tooth head is larger than that of the tooth neck, and the tooth base and the tooth neck are in smooth transition to form a tooth shoulder; the front side wall and the rear side wall of the tooth neck protrude outwards to form two meshing tooth tables, the meshing tooth tables extend and protrude outwards from the front side wall and the rear side wall of the tooth base, and the side walls, away from the tooth neck, of the two meshing tooth tables are parallel to the vertical face in the length direction. The thickness of the meshed tooth table is smaller than the thickness of the tooth base, the thickness of the tooth neck and the thickness of the tooth head, a biting table groove is formed in the end face of the tooth head, and the proportion of the thickness to the length of a single zipper tooth is 60-76: 100. The proportion well balances the relationship between the size and the mechanical property of the zipper teeth.

Description

TECHNICAL FIELD

[0001] The utility model belongs to zip fastener technical field, concretely relates to a soft zip fastener. BACKGROUND

[0002] Zip fastener is a kind of part with wide application, mainly applied to the article with the need of opening and closing as required, such as luggage, clothes etc.. From daily life experience, it is known that: the conventional zip fastener has certain hardness, thickness and weight, and the folding compliance is poor, and there is an arc circle, if the zip fastener is installed on the article needing folding storage, the zip fastener has adverse effect on controlling the storage volume of the article, and simultaneously, the zip fastener is not suitable for thin clothes, and the zip fastener is often the heaviest part of the whole clothes, and then the cloth is pulled by the falling zip fastener, and the cloth is deformed at the position of zip fastener, and the wearing effect is influenced.

[0003] In order to solve the above problems, the patent document with publication number CN111109774B discloses a thin wing integrated zip fastener, which comprises a longitudinally extending strip, and a plurality of chain teeth arranged on the inner side of the strip, the strip is a plastic film, and the chain teeth are plastic teeth, and the strip and the chain teeth are simultaneously injection molded to form an integrated zip fastener by using an injection molding process.

[0004] The strip of the above-mentioned prior art is a plastic film, which makes the strip of the finished zip fastener relatively thin and soft, and enables the zip fastener to better match the thin clothes, and the strip and the chain teeth are simultaneously injection molded by using an injection molding process, thereby forming an integrated zip fastener, and simplifying the connection structure between the strip and the chain teeth, and strengthening the connection strength of the strip and the chain.

[0005] The above-mentioned prior art mainly designs the strip of the zip fastener as a plastic film to improve the softness of the zip fastener to a certain extent, but the main reason for the poor compliance and softness of the zip fastener is that the densely arranged semi-hard or hard chain teeth on the strip hinder the folding of the zip fastener, the larger the size of the chain teeth and the more densely arranged, the worse the softness of the zip fastener, but directly reducing the size of the chain teeth in proportion to improve the softness of the zip fastener will easily cause the chain teeth to be damaged or worn when subjected to external force, and therefore the technical difficulty of improving the softness of the zip fastener mainly lies in the balance between the size and mechanical properties of the chain teeth of the zip fastener.

[0006] In summary, in order to improve the softness of the zip fastener to expand the application range of the zip fastener, the inventors aim to provide a soft zip fastener with a specific size. SUMMARY

[0007] In view of the problems in the related art, the utility model provides a soft zip fastener to overcome the above technical problems existing in the prior art.

[0008] The technical scheme of the utility model is implemented as follows:

[0009] A soft zipper comprises at least two flexible belts and a plurality of teeth, the flexible belts are provided with a plurality of teeth in sequence and at intervals on one side, and the teeth of the two flexible belts are oppositely arranged.

[0010] Each tooth is provided with an integrally formed tooth base, engaging tooth table, tooth neck and tooth head.

[0011] The first side of the tooth base is fixedly connected to the flexible belt, the second side of the tooth base is sequentially connected to the tooth neck and tooth head, the width of the tooth base and tooth head is greater than the width of the tooth neck, and the tooth base and tooth neck are smoothly connected to form a tooth shoulder.

[0012] The front and rear side walls of the tooth neck are outwardly and horizontally protruded to form two engaging tooth tables, the engaging tooth tables on the front and rear sides are extended to the front and rear side walls of the tooth base along the tooth shoulder, the two engaging tooth tables are outwardly protruded to the front and rear side walls of the tooth base, and the side walls of the two engaging tooth tables away from the tooth neck are parallel to the vertical plane in the length direction.

[0013] The thickness of the engaging tooth table is less than the thickness of the tooth base, tooth neck and tooth head, the engaging tooth table is not in contact with the tooth head, the end face of the tooth head away from the tooth neck is provided with a recessed bite table groove matching the engaging tooth table, and the bite table groove penetrates the tooth head in the width direction.

[0014] The ratio of the thickness to the length of each tooth is 60-76:100.

[0015] When the soft zipper is in a straight closed state, the opposite teeth are staggered, but the adjacent teeth are not in contact with each other and have gaps except the bite table groove and the engaging tooth table, and the bite table groove of one tooth is engaged with the engaging tooth tables of the adjacent and opposite two teeth.

[0016] Compared with the prior art, firstly, the engaging structure of the utility model is the extremely thin engaging tooth table, the thinner the thickness of the engaging structure, the farther the distance between the teeth, and the more conducive to improving the flexibility of the whole zipper and realizing the compliance effect after the zipper is bent, secondly, the engaging tooth table and the tooth neck are integrally and compactly designed, there is no obvious stress concentration area or weak structure, and the engaging tooth table is not easy to be broken by external force, meanwhile, the structure of the engaging tooth table is extended to the front and rear side walls of the tooth base, the volume of the engaging tooth shoulder is appropriately increased to ensure the structural strength, and the engaging tooth shoulder is supported on the side of the tooth base to further ensure the structural strength, and finally, the specific design of the tooth thickness and length ratio of the utility model can produce light and thin zippers according to the ratio, and the ratio can better balance the relationship between the tooth size and the mechanical properties.

[0017] Preferably, the length of the single said tooth is 3.65-3.75 mm, the thickness is 2.25-2.35 mm, and the width is 1.80-2.00 mm. After repeated debugging and verification, the preferable size range of the tooth is obtained.

[0018] Preferably, the unit volume of the single said tooth includes at least 17.5 wt% of the filamentous fiber, which is wrapped or semi-wrapped by the resin matrix, and the filamentous fiber serves as the internal skeleton of the tooth. By designing the fiber skeleton inside the tooth, the strength and toughness of the light and thin tooth are ensured.

[0019] Preferably, the tooth neck side wall is provided away from the side wall of the tooth neck, the tooth neck side wall of the adjacent tooth on the same said flexible band is 0.40-0.60 mm apart, and the shortest distance between the tooth heads of the adjacent tooth on the same said flexible band is 0.90-1.10 mm. After repeated debugging and verification, the preferable arrangement distance of the tooth is obtained.

[0020] Preferably, the tooth head and the tooth neck are smoothly transitioned, the end face of the tooth head away from the tooth neck is a convex arc surface, and the width direction of the bite platform groove is linearly and completely penetrated through the tooth head, thereby providing a certain activity space for the bending action of the tooth as a whole with the zipper.

[0021] Preferably, the slot width of the bite platform groove is greater than the thickness of the meshing tooth platform, thereby providing a certain activity space for the meshing tooth platform, so that the meshing tooth platform can better cooperate with the bending action of the tooth, and the difficulty of aligning and meshing caused by the extremely small meshing tooth platform is also reduced.

[0022] Preferably, the thickness of the meshing tooth platform is 0.45-0.65 mm, and the slot width of the bite platform groove is 0.70-0.90 mm. After repeated debugging and verification, the preferable size design is obtained.

[0023] Preferably, the inner surface of the bite platform groove is a circular arc surface, the central angle of the circular arc surface is greater than 180° and less than 190°, compared with the half-circle-shaped (i.e. 180°) bite platform groove, the central angle range design can more stably mesh the meshing tooth platform, and the meshing tooth platform is as far as possible to avoid being separated from the bite platform groove. Specifically, the radius of the circular arc surface is 0.30-0.50 mm.

[0024] Based on the design idea, namely the main meshing structure of the utility model is the meshing rack, obviously, it is particularly important to ensure the alignment of the meshing rack when the zipper is pulled, and the farther the flexible belt is from the tooth head, the higher the degree of freedom of the chain tooth is, and the more difficult it is to achieve smooth pulling, so it is necessary to specifically design the fixed position of the flexible belt, preferably, the first side of the tooth base is recessed to form a belt biting opening, the belt biting opening completely penetrates the chain tooth in the width direction, the belt biting opening is recessed along the length direction of the chain tooth until it intersects with the meshing rack which is convex on the front and rear side walls of the tooth base, thereby cutting part of the meshing rack, the recess in the length direction of the belt biting opening does not exceed the tooth shoulder, and the side edge of the flexible belt is close to the meshing rack, thereby ensuring smooth pulling effect.

[0025] Preferably, the upper part and the lower part of the tooth head each include an end plane parallel to the horizontal plane and an abutment curved surface, and the curved surface between the upper part and the lower part is provided with the bite rack slot;

[0026] The outer periphery of each of the two end planes distributed on the upper part and the lower part extends outward and in the direction of approaching each other, thereby forming the convex abutment curved surface, one of the abutment curved surfaces includes two first curved surfaces, two second curved surfaces and one third curved surface, and the five curved surfaces are arranged around the end plane;

[0027] The projection of the third curved surface in the horizontal direction is a trapezoid or a trapezoid-like shape, the two sides of the third curved surface respectively abut the two second curved surfaces, the sides of the two second curved surfaces not connected with the third curved surface respectively abut the two first curved surfaces, the projection of the first curved surface in the horizontal direction is a triangle or a triangle-like shape, and the two first curved surfaces and the two second curved surfaces are symmetrically distributed on the two sides of the third curved surface.

[0028] As a small and micro part, the chain tooth has extremely small size, and even if the conventional rounding is performed, the chain tooth still has scratching and sharp feeling when touched by hand, especially the olive ball-shaped tooth head part, therefore, the utility model specifically designs the touch feeling of the plurality of curved surfaces of the soft tooth head, so that the utility model does not have scratching and sharp feeling when contacting the human skin whether in the flat state or in the curved state, and the touch feeling is relatively comfortable. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The utility model is a structural schematic view;

[0030] Figure 2 The utility model is a front view;

[0031] Figure 3 The utility model is Figure 2 The utility model is an enlarged view of A;

[0032] Figure 4Partial structure diagram of unilateral zipper of the utility model;

[0033] Figure 5 Structure diagram of one of the chain tooth of the utility model;

[0034] Figure 6 Structure diagram of two of the chain tooth of the utility model;

[0035] Figure 7 Top view of the chain tooth of the utility model;

[0036] Figure 8 Front view of one of the chain tooth of the utility model;

[0037] Figure 9 Front view of two of the chain tooth of the utility model;

[0038] Figure 10 Comparison diagram of the utility model and common zipper after folding and laying flat.

[0039] Marking description:

[0040] 1, flexible belt;

[0041] 2, chain tooth;

[0042] 201, tooth base; 201a, bite belt mouth;

[0043] 202, tooth shoulder;

[0044] 203, meshing tooth table; 203a, tooth table side wall;

[0045] 204, tooth neck;

[0046] 205, tooth head; 205a, bite table groove; 205b, end plane; 205c, first curved surface; 205d, second curved surface; 205e, third curved surface; 205f, outer convex curved surface. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0048] In the description of the utility model, it needs to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0049] It needs to be explained that "length direction" is "L" in the drawing coordinate axis, "thickness direction" is "H" in the drawing coordinate axis, and "width direction" is "W" in the drawing coordinate axis.

[0050] Embodiment 1

[0051] As shown in Figures 1 to 9 A soft zipper, comprising two flexible belts 1 and a plurality of teeth 2, a plurality of teeth 2 are sequentially and spacedly installed on one side of the flexible belt 1, and the teeth 2 of the two flexible belts 1 are oppositely arranged.

[0052] The single tooth 2 has an integrally formed tooth base 201, a meshing tooth table 203, a tooth neck 204 and a tooth head 205.

[0053] The first side of the tooth base 201 is fixedly connected to the flexible belt 1, the second side of the tooth base 201 is sequentially connected to the tooth neck 204 and the tooth head 205, the width of the tooth base 201 and the tooth head 205 is greater than the width of the tooth neck 204, and the tooth base 201 and the tooth neck 204 are smoothly transitioned to form a tooth shoulder 202.

[0054] The front and rear side walls of the tooth neck 204 are outwardly and horizontally protrudingly extended at the positions close to the tooth base 201 to form two meshing tooth tables 203, the meshing tooth tables 203 on the front and rear sides are extended to the front and rear side walls of the tooth base 201 along the tooth shoulder 202, the two meshing tooth tables 203 are respectively outwardly protruding from the front and rear side walls of the tooth base 201, and the side walls of the two meshing tooth tables 203 away from the tooth neck 204 are parallel to the vertical plane in the length direction.

[0055] The thickness of the meshing tooth table 203 is less than the thickness of the tooth base 201, the tooth neck 204 and the tooth head 205, the meshing tooth table 203 outwardly protrudingly extended does not contact the tooth head 205, the end face of the tooth head 205 away from the tooth neck 204 is provided with a bite groove 205a recessed to the inside of the tooth head 205 and matched with the meshing tooth table 203, and the bite groove 205a completely penetrates the tooth head 205 in the width direction.

[0056] The ratio of the thickness H to the length L of a single said tooth 2 is 60-76:100.

[0057] When the said flexible zipper is in a linear closed state, the opposite teeth 2 are staggered, but the adjacent teeth 2 are not in contact with each other and have gaps except for the bite platform groove 205a and the engagement tooth platform 203. The bite platform groove 205a of a single said tooth 2 engages the engagement tooth platform 203 of two adjacent and opposite teeth 2 respectively at both ends.

[0058] In this embodiment, the length L1 of a single said tooth 2 is 3.65-3.75 mm, the thickness H1 is 2.25-2.35 mm, and the width W1 is 1.80-2.00 mm.

[0059] In this embodiment, a single said tooth 2 has a unit volume of at least 17.5 wt% of filamentous fibers, which are wrapped or semi-wrapped by a resin matrix, and the filamentous fibers serve as the internal skeleton of the tooth 2.

[0060] In this embodiment, the tooth platform side wall 203a is provided on the side wall of the tooth neck 204 away from the engagement tooth platform 203, the distance d1 between the tooth platform side walls 203a of adjacent teeth 2 on the same said flexible tape 1 is 0.40-0.60 mm, and the shortest distance d2 between the tooth heads 205 of adjacent teeth 2 on the same said flexible tape 1 is 0.90-1.10 mm.

[0061] In this embodiment, the tooth head 205 and the tooth neck 204 are smoothly connected, the end face of the tooth head 205 away from the tooth neck 204 is a convex arc surface 205f, and the bite platform groove 205a is formed by the convex arc surface 205f inwardly recessed and completely penetrates the tooth head 205 in the width direction.

[0062] In this embodiment, the slot width W2 of the bite platform groove 205a is greater than the thickness H2 of the engagement tooth platform 203; specifically, the thickness H2 of the engagement tooth platform 203 is 0.45-0.65 mm, and the slot width W2 of the bite platform groove 205a is 0.70-0.90 mm.

[0063] In this embodiment, the inner surface of the bite platform groove 205a is a circular arc surface, the central angle A1 of the circular arc surface is greater than 180° and less than 200°, and the circular arc radius R1 is 0.30-0.50 mm.

[0064] In the embodiment, the first side of the base 201 is concave to the inside of itself and has a bite opening 201a that completely penetrates the chain 2 in the width direction, the bite opening 201a is concave along the length direction of the chain 2 until it intersects with the engagement platform 203 that is convex on the front and rear sidewalls of the base 201, and then part of the engagement platform 203 is cut off, the concave in the length direction of the bite opening 201a does not exceed the shoulder 202.

[0065] In the embodiment, the upper and lower parts of the head 205 each include an end plane 205b that is parallel to the horizontal plane and a connecting curved surface, and the curved surface between the upper and lower parts sets the bite platform groove 205a.

[0066] The outer periphery of each of the two end planes 205b that are distributed on the upper and lower parts respectively extends outward and toward the adjacent direction, and then forms the convex connecting curved surface, one of the connecting curved surfaces includes two first curved surfaces 205c, two second curved surfaces 205d, and one third curved surface 205e, and the five curved surfaces are arranged around the end plane 205b.

[0067] The projection of the third curved surface 205e in the horizontal direction is trapezoidal or similar, the two sides of the third curved surface 205e respectively connect the two second curved surfaces 205d, the sides of the two second curved surfaces 205d that do not connect the third curved surface 205e respectively connect the two first curved surfaces 205c, the projection of the first curved surface 205c in the horizontal direction is triangular or similar, and the two first curved surfaces 205c and the two second curved surfaces 205d are symmetrically distributed on the two sides of the third curved surface 205e.

[0068] Comparative Example 1

[0069] The comparative example is compared with the embodiment 1, and the difference is that the chain 2 is a common specification chain 2, the length of a single chain 2 is 2.95 mm, the thickness is 3.75 mm, and the width is 1.95 mm.

[0070] Fold the embodiment 1 and the comparative example 1 in half and then naturally lay them flat, and the results are shown in the table below. Figure 10 The compliance of the folded embodiment is obviously much higher than that of the common zipper, which shows that the specific designs of the utility model can effectively improve the softness of the zipper as a whole, and are especially suitable for being applied to folded storage objects and are conducive to reducing the storage volume.

[0071] According to the disclosure and teaching of the above description, the skilled in the art of the utility model can also change and modify the above-mentioned embodiment, therefore, the utility model is not limited to the specific embodiment disclosed and described above, and some modifications and changes of the utility model should also fall into the protection scope of the claims of the utility model. 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 utility model.

Claims

1. A flexible zipper, characterized by: The flexible band includes at least two flexible bands and a plurality of chain teeth, and the chain teeth are arranged on one side of the flexible band in sequence. Each chain tooth has an integrated tooth base, a meshing tooth table, a tooth neck and a tooth head. The first side of the tooth base is fixedly connected to the flexible band, and the second side of the tooth base is sequentially connected to the tooth neck and the tooth head. The width of the tooth base and the tooth head is greater than the width of the tooth neck, and the tooth base and the tooth neck are smoothly connected to form a tooth shoulder. The front and rear side walls of the tooth neck are outwardly and horizontally protrudingly extended near the tooth base to form two meshing tooth tables. The thickness of the meshing tooth table is less than the thickness of the tooth base, the tooth neck and the tooth head, and the meshing tooth table is not in contact with the tooth head. The ratio of the thickness to the length of the chain tooth is 60-76:

100.

2. The soft zipper of claim 1, wherein: When the flexible zipper is in a straight closed state, the opposite chain teeth are staggered, but the adjacent chain teeth are not in contact with each other except the bite table groove and the meshing tooth table, and there is a gap between them.

3. The soft zipper of claim 1, wherein: The length of the chain tooth is 3.65-3.75 mm, the thickness is 2.25-2.35 mm, and the width is 1.80-2.00 mm.

4. The flexible zipper according to any one of claims 1 to 3, wherein: The unit volume of the chain tooth includes at least 17.5 wt% of filamentous fibers, which are wrapped or semi-wrapped by a resin matrix, and the filamentous fibers serve as the internal skeleton of the chain tooth.

5. The flexible zipper according to any one of claims 1 to 3, wherein: The tooth table side wall is provided on the side wall of the meshing tooth table away from the tooth neck, the tooth table side wall of the adjacent chain tooth on the same flexible band is 0.40-0.60 mm apart, and the shortest distance between the tooth heads of the adjacent chain teeth on the same flexible band is 0.90-1.10 mm.

6. The flexible zipper of claim 5, wherein: The tooth head and the tooth neck are smoothly connected, the end face of the tooth head away from the tooth neck is a convex arc surface, and the bite table groove is linearly and completely penetrated through the tooth head in the width direction.

7. The flexible zipper of claim 6, wherein: The slot width of the bite table groove is greater than the thickness of the meshing tooth table.

8. The flexible zipper of claim 6, wherein: The thickness of the meshing tooth table is 0.45-0.65 mm, and the slot width of the bite table groove is 0.70-0.90 mm. The inner surface of the bite table groove is a circular arc surface, the central angle of the circular arc surface is greater than 180° and less than 200°, and the radius of the circular arc is 0.30-0.50 mm.

9. The flexible fastener of any one of claims 1 to 3, wherein: The first side of the dental base is internally concave and has a bite opening, the bite opening completely penetrates the chain tooth in the width direction, the bite opening extends to the intersection with the engagement tooth platform protruding from the front and rear side walls of the dental base in the length direction of the chain tooth, and then part of the engagement tooth platform is cut off, the concave in the length direction of the bite opening does not exceed the shoulder.

10. The flexible fastener of any one of claims 1 to 3, wherein: The upper and lower parts of the tooth head each include an end plane parallel to the horizontal plane and an engaging curved surface, and the curved surface between the upper and lower parts sets the bite platform groove; The outer periphery of the two end planes of the upper and lower parts respectively extends outward and in the direction of approaching each other, and then forms the protruding engaging curved surface, one of the engaging curved surfaces includes two first curved surfaces, two second curved surfaces and one third curved surface, and the five curved surfaces surround the end plane; The projection of the third curved surface in the horizontal direction is trapezoidal or trapezoidal-like, the two sides of the third curved surface respectively connect the two second curved surfaces, the sides of the two second curved surfaces not connected with the third curved surface respectively connect the two first curved surfaces, the projection of the first curved surface in the horizontal direction is triangular or triangular-like, and the two first curved surfaces and the two second curved surfaces are symmetrically distributed on the two sides of the third curved surface.

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