Hollow teeth, zipper, and zipper processing method

Abstract

The present application discloses a hollow tooth, comprising a meshing member, wherein two adjacent meshing members can mesh with each other, the meshing member comprising a high point portion and a low point portion having a hollow structure, the high point portion of one meshing member being movably disposed within the low point portion of another adjacent meshing member, and the two high point portions of the two adjacent meshing members colliding and interfering with each other. The hollow teeth arranged in the above manner have their high point portions located within the hollow structure of the low point portions of the adjacent hollow teeth, providing a greater range of motion for the teeth and reducing friction between the teeth. Thus, even with a denser tooth arrangement, a smooth closing and closing feel can be achieved while reducing the risk of chain breakage. Furthermore, the present application discloses a zipper comprising the above-described hollow teeth and a method for processing the zipper.

Description

Technical Field

[0001] The present application relates to the technical field of zippers, and in particular to a hollow tooth. In addition, the present application also relates to a zipper comprising the hollow tooth, and a processing method of the zipper. Background Art

[0002] Existing zipper tooth manufacturing technology is difficult to estimate the cost and difficulty of mass-producing relatively complex tooth shapes. Furthermore, existing technologies for zipper tooth shapes are mostly based on resin materials, which has significant limitations.

[0003] Currently, there are zipper tooth profiles designed with metal as the base material: for example, patent number CN202130091795.2, this patent is to process a protrusion and a depression on different sides of a tooth, through which the protrusion of one tooth is tightly meshed with the depression of the other tooth, and by arranging the chain teeth at equal intervals on two cloth tapes, finally meshing to form a whole zipper, achieving the zipper opening and closing effect. Various tooth profiles derived from the corn tooth shape and model of patent CN202130091795.2 meet the needs of changes in tooth appearance and meshing method, but also leave some problems that need to be solved urgently:

[0004] 1. The meshing shape of the existing corn tooth type and its derivatives is achieved by meshing two single high points with the low points of adjacent teeth. This solution increases the risk of chain breakage due to the shape of the single high point. Because the high point is designed as a single boss, with a high center and low points on all four sides, if the high point exceeds the low point limit, the tooth will slide out as a whole, increasing the risk of chain breakage.

[0005] 2. The teeth of corn teeth and their derivative types have a smaller range of motion and a smaller arrangement distance. While increasing the flat pulling strength, it also increases the force required to open and close the zipper, affecting the opening and closing experience.

[0006] Therefore, in response to the above technical problems, how to provide a hollow tooth with a low risk of chain breakage and a smooth pulling and closing feel is a technical problem that technical personnel in this field need to solve. Summary of the Invention

[0007] The purpose of this application is to provide a hollow tooth, in which the high point of the hollow tooth is located in the hollow structure of the low point of the adjacent hollow tooth. The range of movement of the teeth is larger, and the friction between the teeth is reduced. Therefore, a smooth pulling and closing feel can be obtained even in the case of a denser tooth arrangement, while reducing the risk of chain breakage.

[0008] Another object of the present application is to provide a zipper including the above-mentioned hollow teeth, wherein the above-mentioned hollow teeth are linearly arranged on two cloth tapes with the same spacing, and the hollow teeth on the two cloth tapes are staggered relative to each other, and the high point on one cloth tape is engaged with the low point on the other cloth tape to achieve the zipper engagement effect.

[0009] Another object of the present application is to provide a method for processing the above-mentioned zipper.

[0010] To achieve the above-mentioned purpose, the present application provides a hollow tooth, including a meshing member, two adjacent meshing members can mesh with each other, the meshing member includes a high point portion and a low point portion with a hollow structure, the high point portion in one meshing member is movably arranged on the low point portion in another adjacent meshing member, and the two high point portions in the two adjacent meshing members collide and interfere with each other.

[0011] Preferably, the high point portion moves within the hollow range formed by the low point portion, and the high point portion collides and interferes with the boundary of the hollow range of the low point portion.

[0012] Preferably, the outer wall surfaces of the point-high portions are respectively provided with gentle slopes and steep slopes, and when adjacent engagement members are engaged, one point-high portion squeezes the gentle slope of another adjacent point-high portion through the gentle slope, so that the squeezed point-high portion is turned outwards;

[0013] The two high points in two adjacent engagement members collide and interfere with each other due to the steep slope.

[0014] Preferably, the hollow teeth further include an engaging member extending from the high point portion toward the low point portion and connected to the meshing member, wherein the engaging member is used for engaging and clamping the ribs.

[0015] Preferably, the engaging member further includes a connecting member connected to the bite member, the high point portion is respectively arranged on the corresponding two end faces of the connecting member, the hollow structure of the low point portion is opened on the connecting member, and the hollow structure is located between the high point portion and the bite member.

[0016] Preferably, the thickness of the connecting member is smaller than the thickness of the engaging member.

[0017] Preferably, each of the high point portions includes at least two square teeth, and two or more of the square teeth are arranged side by side and move within the hollow range formed by the low point portion.

[0018] Preferably, each of the square teeth is integrally formed with the connecting piece.

[0019] A zipper comprising any of the hollow teeth described above.

[0020] Preferably, a plurality of the hollow teeth are linearly arranged on the ribs of two cloth tapes at the same intervals, and the hollow teeth on the two ribs are staggered to form the zipper.

[0021] A method for processing the above-mentioned zipper comprises the following steps:

[0022] Step a: Extruding a round metal wire into an "X-shaped" metal forming wire, which is divided into an upper occlusal part and a lower occlusal part with a middle crossbeam as the dividing line;

[0023] Step b, cutting the cross section of the metal forming wire with a die to cut out an "X-shaped" tooth blank with uniform and equal thickness;

[0024] Step c, butting the two metal legs of the upper bite portion together through an extrusion die, and biting the two metal legs of the lower bite portion onto the ribs of the zipper tape to form an "A-shaped" semi-finished blank;

[0025] Step d, extruding the metal foot at the upper portion of the occlusal portion to form the high point portion, thereby forming the hollow teeth;

[0026] Step e: linearly arranging the hollow teeth at the same intervals on two cloth tapes to form the zipper.

[0027] Preferably, after the two metal legs of the upper bite portion are butted against each other, the lower portion of the hollow structure is formed between the two metal legs and the middle cross beam.

[0028] A method for processing a zipper, wherein the zipper adopts an injection molding process to form the engaging parts.

[0029] Compared to the above-mentioned background technology, the hollow teeth of the present application include a meshing member, which includes a high point portion and a low point portion with a hollow structure. The high point portion in one meshing member is movably arranged in the low point portion of another adjacent meshing member, and the two high point portions in the two adjacent meshing members collide and interfere with each other, thereby achieving a meshing effect. Compared to corn teeth and their derivative tooth shapes, the teeth of the present invention have a larger range of movement, so there is a larger adjustable range for the arrangement distance of the teeth. The larger the arrangement distance, the better the smoothness. In addition, due to the presence of the hollow structure, the friction between the teeth is reduced, so a smooth pulling and closing feel can be obtained even with a denser tooth arrangement. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0031] Figure 1 A schematic diagram of the front structure of the hollowed-out teeth provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the side structure of the hollowed-out teeth provided in an embodiment of the present application;

[0033] Figure 3 A three-dimensional diagram provided for an embodiment of the present application;

[0034] Figure 4 A three-dimensional diagram of an "X-shaped" tooth blank provided in an embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of the front structure of the "Type A" semi-finished blank provided in the embodiment of the present application;

[0036] Figure 6 A schematic diagram of the side structure of the "Type A" semi-finished blank provided in the embodiment of the present application;

[0037] Figure 7 A schematic diagram of the zipper engagement structure provided in an embodiment of the present application;

[0038] Figure 8 This is a schematic diagram of the structure of the high and low points when the hollow teeth are engaged provided in an embodiment of the present application.

[0039] In the figure: 1-engaging part; 2-biting part; 3-high point; 4-low point; 5-connecting part; 6-middle beam; 7-biting upper part; 8-biting lower part; 31-gentle slope; 32-steep slope. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0042] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper," "lower," "front," and "back" are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] like Figures 1 to 3 As shown, in this embodiment, a hollow tooth is provided, which includes a meshing member 1. Two adjacent meshing members 1 can mesh with each other, so that the two adjacent hollow teeth are meshed through the meshing member 1. Specifically, the meshing member 1 includes a high point 3 and a low point 4. Here, the high point 3 refers to a protrusion with a convex structure, and the low point 4 refers to a groove with a concave structure, wherein the low point 4 is a hollow structure; when two adjacent hollow teeth are meshed, the high point 3 in one meshing member 1 is movably disposed on the low point 4 in the other adjacent meshing member 1, and the two high point 3 in the two adjacent meshing members 1 collide and interfere, thereby achieving meshing.

[0044] Compared to corn teeth and their derivatives, the hollow teeth of this application have a larger range of motion, allowing for a wider range of adjustment for the tooth spacing. The larger the spacing, the smoother the grip. Furthermore, the hollow structure reduces friction between the teeth, resulting in a smooth closing and opening feel even with a denser tooth arrangement.

[0045] In addition, compared with the existing tooth point low design represented by corn teeth, which cannot completely restrict the point height from escaping from the point low range, the hollow structure of the hollow teeth draws on the characteristics of the square tooth point low, which can make the point high move within the hollow range formed by the point low. Because the point height will collide and interfere with the boundary of the hollow range, it will not escape from the hollow range.

[0046] Of course, for the hollow structure, the hollow range can also be punched in the middle of the lower point 4, but this solution wastes a lot of materials, requires high processing precision, and also affects the efficiency of zipper processing.

[0047] like Figure 2As shown, to facilitate the meshing of adjacent hollow teeth, gentle slopes 31 are provided on the outer walls of the raised portions 3. When adjacent meshing elements 1 mesh, one raised portion 3, through its gentle slope 31, compresses the gentle slope 31 of another adjacent raised portion 3, causing the squeezed raised portion 3 to turn outward, allowing the raised portion 3 to extend into the lowered portion 4, thus achieving meshing of adjacent hollow teeth. Furthermore, steep slopes 32 are provided on the outer walls of the raised portions 3. When adjacent meshing elements 1 mesh, the two raised portions 3 collide and interfere with each other via the steep slopes 32, preventing them from falling off.

[0048] The hollow tooth further includes an engaging member 2 extending from the high point 3 toward the low point 4 and connected to the engaging member 1. The engaging member 2 is used to engage and clamp the ribs of the cloth tape, thereby forming a stable tooth structure.

[0049] It should be noted that the engaging part 1 also includes a connecting part 5 connected to the bite part 2, the high point part 3 is respectively arranged on the corresponding two end faces of the connecting part 5, the hollow structure of the low point part 4 is opened on the connecting part 5, and the hollow structure is located between the high point part 3 and the bite part 2.

[0050] In addition, in order to facilitate the engagement of two adjacent hollow teeth, the thickness of the connecting member 5 is less than that of the engaging member 2. Figure 7 As shown, the raised portion 3 of the hollow teeth on the E side meshes with the lowered portion 4 on the F side. Since the raised portion 3 is a protruding structure, a certain distance is created between two adjacent hollow teeth on the F side. A large distance may affect the zipper's closing and closing performance. Therefore, by reducing the thickness of the connector 5, the distance between the two adjacent hollow teeth on the F side is reduced, thereby achieving a more stable closing and closing performance of the zipper. Of course, the hollow teeth on the E side are arranged in the same manner.

[0051] On the basis of the above embodiment, the above-mentioned point height portion 3 includes at least two square teeth, that is, since when the hollow teeth are engaged, one hollow tooth has two adjacent hollow teeth on both sides, it is necessary to set a point height portion 3 on both sides of the hollow tooth, and the point height portion 3 on either side includes at least two square teeth. For the sake of convenience, this application will be described with two square teeth as the point height portion 3. Figure 7 As shown, the high point 3 on the E side can move in the hollow space of the two adjacent low point parts 4 on the F side, and the design of the two side teeth can also ensure that the zipper will not burst when one side of the square teeth fails in special circumstances.

[0052] In addition, the present application also provides a zipper including the above-mentioned hollow teeth, the hollow teeth are linearly arranged on two cloth tapes with the same spacing, the hollow teeth on the two cloth tapes are staggered, and the high point 3 on one cloth tape is engaged with the low point 4 on the other cloth tape to achieve the zipper engagement effect.

[0053] At the same time, the present application also provides a method for processing the above-mentioned zipper, which comprises the following steps:

[0054] Step a: Extruding a round metal wire into an "X-shaped" metal forming wire, which is divided into an upper occlusal portion 7 and a lower occlusal portion 8 with the middle crossbeam 6 as the dividing line;

[0055] Step b, cutting the cross section of the metal forming line with a die to cut out an "X-shaped" tooth blank with uniform and equal thickness;

[0056] Step c: using an extrusion die to butt the two metal legs of the upper engaging portion 7 together, and engage the two metal legs of the lower engaging portion 8 onto the ribs of the zipper tape to form an "A-shaped" semi-finished blank;

[0057] Step d: Extruding the metal foot of the upper occlusal part 7 to form a high point 3 to form a hollow tooth;

[0058] Step e: Arrange the hollow teeth linearly on two cloth tapes at the same intervals to form a zipper.

[0059] It should be noted that if Figure 4 As shown, A and B represent the end faces of the two metal legs of the upper engaging portion 7, respectively. The meshing element 1 of this application is formed by closing the A and B surfaces of these two metal legs relative to each other. The upper engaging portion 7 molded section is the connecting member 5 in the hollow tooth of this application; the lower engaging portion 8 molded section is the engaging member 2 in the hollow tooth of this application.

[0060] In the process of hollowing teeth, the die is first used to cut the cross section of the forming line to cut out the "X-shaped" tooth blank with uniform and equal thickness. Then the A and B surfaces of the metal corners of the upper bite part 7 are butted together through the extrusion die. The two metal feet of the lower bite part 8 are bitten onto the ribs of the zipper tape to form an "A-shaped" semi-finished blank, such as Figure 5 At this time, the lowered portion 4 has been formed, that is, after the two metal legs of the upper portion 7 are butted together, a hollow lowered portion 4 is formed between the middle crossbeam 6 .

[0061] exist Figure 5 and Figure 6 In the figure, C and D represent the end faces on both sides of the upper bite part 7. The C and D faces are extruded to form the high point 3, forming hollow teeth. Generally speaking, the high point 3 can be formed in one piece by extrusion or stamping, and four boss-like structures on the front and back sides are formed to serve as the high point 3 of the tooth. The formed recessed portion and the hollowed portion serve as the low point 4 of the tooth; the recessed portion here refers to the stepped recess formed by the thickness of the connecting part 5 being lower than the thickness of the bite part 2. During the zipper processing, the rib will pass through the hollow part between the two metal feet of the lower bite part 8, and then the rib will be clamped by the metal feet to fix the hollow teeth on the cloth tape rib to form a zipper.

[0062] In addition, if Figure 7 As shown, the hollow teeth are linearly arranged on the two tapes at the same spacing. The hollow teeth on the E and F sides are staggered and opposite to each other. The high point 3 of the hollow teeth on the E side is meshed with the hollow part of the adjacent hollow teeth on the F side to achieve the zipper meshing effect. For the specific meshing structure, please refer to Figure 8 .

[0063] It should be noted that the hollow teeth can be directly die-casted using a mold. The subsequent tooth implantation process in the zipper manufacturing process can mate the tooth's lower engaging portion (8) with the fabric tape ribs to be processed. The hollow teeth are then linearly arranged with equal spacing on the two fabric tapes to achieve the desired zipper meshing effect. To improve die-casting production efficiency, the hollow teeth can be arranged in a linear array, allowing multiple teeth to be processed simultaneously using a single mold.

[0064] Furthermore, the aforementioned zipper can also be manufactured using an injection molding process to form the engaging element 1, engaging element 2, elevated portion 3, depressed portion 4, connecting element 5, and central crossbar 6. Of course, the zipper needs to be secured to the tape via the engaging element 2 to achieve a stable closing effect. It should be noted that for materials such as metal or plastic, specific processing methods include, but are not limited to, the two embodiments described above. As long as the structure achieves the same hollow teeth or zipper structure as that of the present application, the zipper falls within the scope of protection of this application.

[0065] In summary of the above embodiments, the present application can solve the problems of poor smoothness and easy chain breakage caused by the tight arrangement of corn teeth and their derived tooth types and the small movable part of the tooth head. At the same time, after the low point part 4 has a hollow structure, it can also allow the reagents of the chemical oxidation coloring process to contact the base metal more fully. Because the low point and the high point of the non-hollow structure are in tight contact, the oxidizing reagent cannot completely cover the tooth head, resulting in insufficient coloring. The hollow structure can allow the reagent to enter the hollow part and fully contact the teeth, ensuring the quality of the coloring process. In addition, the design of the double high point 3 on the same side ensures the meshing performance between the teeth under extreme mechanical testing environments, and the hollow design of the low point saves raw materials compared to the corn teeth and their derived tooth types of the same specifications. And the metal teeth processed by the forming line of the above processing method reduce the waste of raw materials caused by the cutting and forming stage of the tooth blank compared to the flat wire processing.

[0066] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0067] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core ideas of this application. It should be noted that for those skilled in the art, without departing from the principles of this application, various improvements and modifications can be made to this application, and such improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A hollow tooth, characterized in that: The hollow teeth include meshing members, two adjacent meshing members can mesh with each other, the meshing members include a high point portion and a low point portion with a hollow structure, the high point portion of one meshing member is movably arranged on the low point portion of another adjacent meshing member, and the two high point portions of the two adjacent meshing members collide and interfere; The hollow teeth are cut into "X-shaped" tooth blanks with uniform thickness through "X-shaped" metal forming lines; The "X-shaped" metal forming line has a central crossbeam; The "X-shaped" tooth blank is divided into an upper occlusal part and a lower occlusal part with the middle crossbeam as the dividing line; The upper part of the bite has end surfaces of two metal legs, and the end surfaces of the two metal legs are relatively closed to form a point lower part of the hollow structure between the end surfaces and the middle cross beam; The high point portion moves within the hollow range formed by the low point portion, and the high point portion collides and interferes with the boundary of the hollow range of the low point portion.

2. The hollow tooth according to claim 1, characterized in that: The outer wall surfaces of the point-high portions are respectively provided with gentle slopes and steep slopes. When the adjacent engaging members are engaged, one point-high portion squeezes the gentle slope of another adjacent point-high portion through the gentle slope, so that the squeezed point-high portion is turned outward. The two high points in two adjacent engagement members collide and interfere with each other due to the steep slope.

3. The hollow tooth according to claim 1, characterized in that: It also includes an engaging member extending from the high point portion toward the low point portion and connected to the engaging member, wherein the engaging member is used to engage and clamp the ribs.

4. The hollow tooth according to claim 3, characterized in that: The engaging member also includes a connecting member connected to the bite member, the high point portion is respectively arranged on the corresponding two end faces of the connecting member, the hollow structure of the low point portion is opened on the connecting member, and the hollow structure is located between the high point portion and the bite member.

5. The hollow tooth according to claim 4, characterized in that: The thickness of the connecting member is smaller than the thickness of the engaging member.

6. The hollow tooth according to claim 5, characterized in that: Each of the high point parts includes at least two square teeth, and two or more of the square teeth are arranged side by side and move within the hollow range formed by the low point part.

7. The hollow tooth according to claim 6, characterized in that: Each of the square teeth is integrally formed with the connecting piece.

8. A zipper, characterized in that: The hollow tooth comprises the hollow tooth described in any one of claims 1 to 7.

9. The slide fastener according to claim 8, wherein: The plurality of hollow teeth are linearly arranged on the ribs of the two cloth tapes at the same intervals, and the hollow teeth on the two ribs are staggered to form the zipper.

10. A method for processing a zipper according to claim 9, characterized in that: The following steps are involved: Step a: Extruding a round metal wire into an "X-shaped" metal forming wire, which is divided into an upper occlusal part and a lower occlusal part with the middle crossbeam as the dividing line; Step b, cutting the cross section of the metal forming wire with a die to cut out "X-shaped" tooth blanks with uniform and equal thickness; Step c, butting the two metal legs of the upper bite portion together through an extrusion die, and engaging the two metal legs of the lower bite portion to the ribs of the zipper tape to form an "A-shaped" semi-finished blank; Step d, extruding a high point on the metal foot at the upper portion of the occlusal portion to form a hollow tooth; Step e: linearly arranging the hollow teeth at the same intervals on two cloth tapes to form the zipper.

11. The processing method according to claim 10, characterized in that: After the two metal legs of the upper part of the bite are connected, a hollow lower part of the structure is formed between the two metal legs and the middle cross beam.

12. A method for processing a zipper according to claim 9, characterized in that: The engaging parts of the zipper are formed by an injection molding process.

Images