Anti-pinch zipper and preparation method thereof

Abstract

The invention belongs to the technical field of zippers, and particularly discloses an anti-pinch zipper which comprises a connecting cloth belt, the connecting cloth belt is of a long-strip-shaped structure and is made of nylon, and one side of the connecting cloth belt is fixedly connected with a tooth block. According to the anti-pinch zipper, the zipper head structure composed of the zipper head front plate and the zipper head back plate and the zipper belt structure composed of the connecting cloth belt and the tooth block jointly form a complete zipper structure, and the surface of the separation block in the zipper head structure is provided with the rotating rolling piece matched with the sliding groove in the surface of the tooth block; the guide piece with the grooved surface is arranged in the zipper head structure and cooperates with the clamping block on the surface of the tooth block, so that in the process that the zipper belt moves in the zipper head structure, under the guidance of the two guide structures, stable displacement can be achieved, and movement deviation of the zipper belt structure is reduced; therefore, the situation that clothes are clamped due to movement deviation of the zipper tape structure is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of zippers, in particular to an anti-pinch zipper and a preparation method thereof. Background Art

[0002] A zipper is a connector that relies on continuously arranged chain teeth to connect or separate items. Due to its portability, durability and adaptability to different occasions, zippers are widely used in clothing, luggage and other fields in daily life. Clothes can be put on and taken off or luggage can be quickly opened and closed by opening and closing the zipper.

[0003] When the zipper is being used and closed, the fabric of the clothing at the connection with the zipper will enter between the zipper and the chain teeth along the gap on the side of the zipper head, causing the zipper to clamp the clothing. After the zipper clamps the clothing, the process of pulling the clothing out of the zipper will damage the clothing, thereby affecting the integrity and aesthetics of the clothing. Summary of the invention

[0004] The object of the present invention is to provide an anti-pinch zipper and a preparation method thereof, so as to solve the problem in the above background technology that the zipper is easy to clamp clothes during use, causing damage to the clothes.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-pinch zipper, comprising a connecting tape, the connecting tape is a long strip structure, the connecting tape is made of nylon, one side of the connecting tape is fixedly connected to a tooth block, the tooth block is a two-section connected structure, one section of the tooth block is a rectangular structure with a through notch on the side surface, and the other section of the tooth block is a rounded rectangular structure, the two sections of the tooth block are connected by a rectangular block, the tooth block is an integrally formed structure of a thermoplastic resin material, and the side surface of the tooth block is The inner wall of the through-notch is fixedly connected to the side surface of the connecting tape, and a plurality of tooth blocks are equidistantly distributed on one side of the connecting tape. The connecting tape and a group of tooth blocks constitute a zipper tape structure, and two zipper tape structures are symmetrically arranged. The tooth blocks on the side surfaces of the two zipper tape structures are engaged with each other through the zipper head structure to form a complete zipper structure. The zipper head structure is a combined structure formed by a slider front plate and a slider back plate, so that a guide mechanism is added inside the zipper head structure to realize the motion guide function of the zipper belt.

[0006] Preferably, the zipper head structure includes a slider front plate, the slider front plate is a rounded trapezoidal structure with a small upper part and a large lower part, both side surfaces of the slider front plate are provided with long plate-shaped protrusions, and one side of the slider front plate is provided with a slider back plate, the slider back plate has the same shape as the slider front plate, and the slider front plate and the slider back plate are arranged opposite to each other, and a pull tab is rotatably connected to the side surface of the slider front plate, the slider front plate and the slider back plate are both made of thermoplastic resin, the slider front plate and the slider back plate are fixedly connected by a separation block, the separation block is a triangular wedge-shaped structure, and both side surfaces of the separation block are fixedly connected to the inner wall of the mounting groove, the mounting groove has the same shape as the separation block, and the two mounting grooves are respectively arranged on the side surfaces of the slider front plate and the slider back plate.

[0007] By adopting the above technical solution and utilizing the separated slider front plate and slider back plate, the installation process of the internal structure can be facilitated.

[0008] Preferably, the separation block is located at the midpoint of the surfaces of the slider front plate and the slider back plate, and the separation block contacts the lower bottom edges of the slider front plate and the slider back plate, and the surface of the separation block is provided with a square groove, and the surface of the separation block is provided with a primary guide structure, which realizes a primary guide anti-deviation of the zipper belt structure through the cooperation between the rolling element and the sliding groove, so as to prevent the zipper belt structure from deviating and clamping the clothes during movement.

[0009] By adopting the above technical solution, the movement of the zipper tape structure can be guided by the primary guide structure to prevent deviation.

[0010] Preferably, the primary guide structure includes a rolling member, which is a roller structure. Both ends of the rolling member are rotatably installed on the inner wall of the groove on the surface of the separation block. A plurality of rolling members are evenly distributed on the inner wall of the groove on the surface of the separation block. The rolling member is aligned with the sliding groove, and the sliding groove is arranged on the outer surface of the rounded rectangular section of the tooth block.

[0011] By adopting the above technical solution, the zipper belt can move more smoothly by utilizing the cooperation between the rolling element and the sliding groove.

[0012] Preferably, a secondary guide structure is arranged inside the zipper head structure, and the secondary guide structure realizes secondary guide anti-deviation of the zipper tape structure through a guide piece and a clamping block.

[0013] By adopting the above technical solution, the secondary guide structure can be guided again by utilizing the secondary guide structure.

[0014] Preferably, the secondary guide structure includes a guide member, one side of which is an arc-shaped structure, and the guide member is installed inside the zipper head structure. Two symmetrically arranged guide members form a group, and two groups of guide members are provided. The two groups of guide members are respectively fixedly installed on the surfaces of the slider front plate and the slider back plate, and the arc-shaped side edges of the two guide members and the outer surface of the separation block form a herringbone channel. The herringbone channel formed by the separation block and the guide member respectively accommodates two zipper tape structures. The surface of the guide member is provided with an arc-shaped groove, and the two ends of the groove on the surface of the guide member are connected, and the groove on the surface of the guide member is engaged with the block, and the block is fixedly installed on the two side surfaces of the rectangular section of the tooth block, and the block is made of compressible rubber material.

[0015] By adopting the above technical solution, the guiding process of the movement of the zipper tape structure can be realized by utilizing the cooperation between the guide member and the rubber clamping block.

[0016] Preferably, a stopper structure is provided on the outer surface of the zipper head structure, and the stopper structure prevents clothing from being drawn into the zipper through contact friction between the outer supporting sheet and the connecting cloth tape.

[0017] By adopting the above technical solution, the blocking block structure can be used to prevent clothes from being caught in the zipper.

[0018] Preferably, the block structure comprises an outer support sheet, which is an arc-shaped sheet structure made of rubber material, and the outer support sheet is fixedly mounted on both side surfaces of the slider front plate and both side surfaces of the slider back plate.

[0019] By adopting the above technical solution, the contact friction between the outer supporting sheet and the connecting cloth tape can be used to prevent the clothes from being caught in the zipper.

[0020] Preferably, the preparation method is as follows:

[0021] Preparation of zipper components: using thermoplastic resin to make tooth blocks, slider front plates, slider back plates, pull tabs, separation blocks, guides and clamps by injection molding; using rubber to make arc-shaped outer support plates; using a grinding wheel machine to open sliding grooves on the surface of the tooth blocks, opening grooves on the surface of the separation blocks and opening grooves on the surface of the guides;

[0022] The primary guide structure and the secondary guide structure are installed, the rolling element is installed in the groove on the surface of the separation block, the guide element is fixedly connected to the slider front plate and the slider back plate respectively, and the clamping block is connected to the tooth block;

[0023] The stopper structure is installed to fix the outer support sheet to the slider front plate and the slider back plate respectively;

[0024] To assemble the zipper, the separation block is fixedly connected to the mounting groove on the surface of the front plate of the slider, the tooth block is connected to the connecting cloth tape to form a zipper belt structure, the two zipper belt structures pass through the channels on both sides of the separation block, and the mounting groove on the surface of the back plate of the slider is fixedly connected to the other side surface of the separation block to complete the assembly of the zipper.

[0025] By adopting the above technical solution, a guide mechanism can be conveniently installed inside a combined zipper head structure to guide the movement of the zipper tape structure.

[0026] Compared with the prior art, the present invention has the following beneficial effects: the anti-pinch zipper:

[0027] 1. In the present invention, the zipper head structure composed of the slider front plate and the slider back plate and the zipper tape structure composed of the connecting cloth tape and the tooth block together constitute a complete zipper structure, and the rotating rolling element arranged on the surface of the separation block in the zipper head structure cooperates with the sliding groove on the surface of the tooth block, and the guide element with a surface groove arranged in the zipper head structure cooperates with the clamping block on the surface of the tooth block, so that the zipper tape can achieve a smooth displacement under the guidance of the two guide structures during the movement of the zipper head structure, reduce the movement deviation of the zipper tape structure, and thus prevent the situation that the clothing is clamped due to the movement deviation of the zipper tape structure;

[0028] Furthermore, a rubber outer support sheet is provided on the outer surface of the slider front plate and the slider back plate to contact the connecting cloth tape, and the friction between the outer support sheet and the connecting cloth tape is utilized to closely fit around the zipper, so as to play a blocking role when the clothes are close to the zipper, thereby reducing the risk of the clothes being caught by the zipper, thereby protecting the clothes from damage;

[0029] 2. In the present invention, the combined connection of the slider front plate, the slider back plate and the separation block makes it convenient to install a primary guide structure and a secondary guide structure in the zipper head structure composed of the slider front plate and the slider back plate to guide and prevent the zipper tape structure. The materials used are common and low-cost, and the production cost can be controlled while ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the front view of the zipper closure structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the closed rear structure of the zipper of the present invention;

[0032] Figure 3 This is a schematic diagram of the front view structure of the zipper of the present invention when it is opened;

[0033] Figure 4 This is a schematic diagram of the zipper of the present invention when it is opened and viewed from above;

[0034] Figure 5 It is a front view structural schematic diagram of the zipper tape of the present invention;

[0035] Figure 6 It is a rear view structural schematic diagram of the zipper tape of the present invention;

[0036] Figure 7 This is a schematic diagram of the gear block structure of the present invention;

[0037] Figure 8 It is a front view structural schematic diagram of the zipper head structure of the present invention;

[0038] Fig. 9 It is a bottom view of the structure of the zipper head of the present invention;

[0039] Fig.10 This is a schematic diagram of the structure of the slider back plate of the present invention;

[0040] Fig.11 This is a schematic diagram of the structure of the front plate of the slider of the present invention;

[0041] Fig.12 This is a schematic diagram of the separation block structure of the present invention;

[0042] Fig.13 It is a schematic diagram of the front cross-section structure of the separation block of the present invention.

[0043] In the figure: 1. connecting cloth belt; 2. tooth block; 3. slider front plate; 4. slider back plate; 5. pull tab; 6. separation block; 7. mounting groove; 8. rolling element; 9. sliding groove; 10. guide element; 11. clamping block; 12. outer support plate. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-Figure 13 The present invention provides a technical solution: an anti-pinch zipper, including a connecting tape 1, a tooth block 2, a slider front plate 3, a slider back plate 4, a pull tab 5, a separation block 6, a mounting groove 7, a rolling member 8, a sliding groove 9, a guide member 10, a clamping block 11, and an outer support plate 12.

[0046] The preparation method is as follows: zipper assembly preparation, using thermoplastic resin injection molding to form a tooth block 2, a slider front plate 3, a slider back plate 4, a pull tab 5, a separation block 6, a guide member 10 and a clamping block 11, using rubber to form an arc-shaped outer support sheet 12, using a grinder to open a sliding groove 9 on the surface of the tooth block 2, opening a groove on the surface of the separation block 6 and a groove on the surface of the guide member 10, installing a primary guide structure and a secondary guide structure, installing a rolling member 8 in the groove on the surface of the separation block 6, and connecting the guide member 10 to the slider 11 respectively. The front plate 3 of the head and the back plate 4 of the slider are fixedly connected, the card block 11 is connected to the tooth block 2, the stopper structure is installed, the outer support plate 12 is fixedly connected to the front plate 3 of the slider and the back plate 4 of the slider respectively, the zipper is assembled, the separation block 6 is fixedly connected to the mounting groove 7 on the surface of the front plate 3 of the slider, the tooth block 2 is connected to the connecting cloth tape 1 to form a zipper belt structure, the two zipper belt structures pass through the channels on both sides of the separation block 6, and the mounting groove 7 on the surface of the back plate 4 of the slider is fixedly connected to the other side surface of the separation block 6, and the assembly of the zipper is completed;

[0047] When preparing the zipper, first use thermoplastic resin as raw material, and make the tooth block 2, the slider front plate 3, the slider back plate 4, the pull tab 5, the separation block 6, the guide 10 and the card block 11 through mold injection molding, and make a long strip of connecting cloth tape 1 connected with the tooth block 2 to form a zipper belt structure. After installing the guide 10 and the separation block 6 inside the slider front plate 3 and the slider back plate 4, the zipper belt structure is placed and connected to the slider front plate 3 and the slider back plate 4, thereby completing the assembly process of the zipper.

[0048] The connecting tape 1 is a long strip structure, the connecting tape 1 is made of nylon, a tooth block 2 is fixedly connected to one side of the connecting tape 1, the tooth block 2 is a two-section structure, one section of the tooth block 2 is a rectangular structure with a through notch on the side surface, and the other section of the tooth block 2 is a rounded rectangular structure, the two sections of the tooth block 2 are connected by a rectangular block, the tooth block 2 is an integrally formed structure of a thermoplastic resin material, the inner wall of the through notch on the side surface of the tooth block 2 is fixedly connected to the side surface of the connecting tape 1, a plurality of tooth blocks 2 are equidistantly distributed on one side of the connecting tape 1, the connecting tape 1 and a group of tooth blocks 2 form a zipper tape structure, the zipper tape structure is symmetrically arranged with two, and the tooth blocks 2 on the side surfaces of the two zipper tape structures are engaged with each other through the zipper head structure to form a complete zipper structure;

[0049] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the assembled zipper is connected to the clothing using a connecting tape 1, and the two zipper tape structures are respectively connected to the two sides of the clothing, so as to achieve the installation of the clothing and the zipper. The zipper head is held and pulled up and down to achieve the engagement and separation between the tooth blocks 2 on the surface of the zipper tape structures on both sides, thereby achieving the opening and closing of the clothing and the quick putting on and taking off of the clothing.

[0050] The zipper head structure is composed of a combined structure of a slider front plate 3 and a slider back plate 4, which is convenient for adding a guide mechanism inside the zipper head structure to realize the motion guiding function of the zipper. The zipper head structure includes a slider front plate 3, which is a rounded trapezoidal structure with a small top and a large bottom. Long plate-shaped protrusions are arranged on both side surfaces of the slider front plate 3, and a slider back plate 4 is arranged on one side of the slider front plate 3. The slider back plate 4 has the same shape as the slider front plate 3, and the slider front plate 3 and the slider back plate 4 are arranged relative to each other. A pull tab 5 is rotatably connected to the side surface of the slider front plate 3. Both the slider front plate 3 and the slider back plate 4 are made of thermoplastic resin. The slider front plate 3 and the slider back plate 4 are fixedly connected by a separation block 6. The separation block 6 is a triangular wedge-shaped structure. The two side surfaces of the separation block 6 are respectively fixedly connected to the inner wall of the mounting groove 7. The mounting groove 7 has the same shape as the separation block 6. Two mounting grooves 7 are respectively arranged on the side surfaces of the slider front plate 3 and the slider back plate 4.

[0051] like Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 When adding a guide mechanism to the interior of the zipper head structure, first, one side surface of the separation block 6 is fixedly connected to the mounting groove 7 on the surface of the slider front plate 3, and the guide member 10 is fixedly connected to the surface of the slider front plate 3, so that a herringbone channel is formed on the surface of the slider front plate 3. At the same time, another set of guide members 10 is fixedly connected to the surface of the slider back plate 4, and one section of the two zipper tape structures is respectively passed through the two sides of the herringbone channel on the surface of the slider front plate 3. At this time, the mounting groove 7 on the surface of the slider back plate 4 is close to the other side surface of the separation block 6, and the surface of the separation block 6 is fixedly connected to the slider back plate 4. At this time, the slider back plate 4, the slider front plate 3 and the two zipper tape structures together constitute a zipper.

[0052] The separation block 6 is located at the midpoint of the surface of the slider front plate 3 and the slider back plate 4, and the separation block 6 is in contact with the lower bottom edge of the slider front plate 3 and the slider back plate 4. The surface of the separation block 6 is provided with a square groove. The surface of the separation block 6 is provided with a primary guide structure. The primary guide structure realizes the primary guide anti-bias of the zipper belt structure through the cooperation between the rolling member 8 and the sliding groove 9, so as to prevent the zipper belt structure from deviating and clamping the clothes during the movement. The primary guide structure includes a rolling member 8, and the rolling member 8 is a roller structure. The two ends of the rolling member 8 are rotatably installed on the inner wall of the groove on the surface of the separation block 6. A plurality of rolling members 8 are equidistantly distributed on the inner wall of the groove on the surface of the separation block 6. The rolling member 8 is aligned with the sliding groove 9. The sliding groove 9 is provided on the outer surface of the rounded rectangular section of the tooth block 2. A secondary guide structure is provided inside the zipper head structure. The secondary guide structure is provided through the guide member 1 0 and the card block 11 realize the secondary guiding and anti-biasing of the zipper belt structure, the secondary guiding structure includes a guide member 10, one side of the guide member 10 is an arc structure, the guide member 10 is installed inside the zipper head structure, two symmetrically arranged guide members 10 are a group, and the guide member 10 is provided with 2 groups, and the two groups of guide members 10 are respectively fixedly installed on the surfaces of the slider front plate 3 and the slider back plate 4, and the arc-shaped sides of the two guide members 10 and the outer surface of the separation block 6 constitute a herringbone channel, and the herringbone channel formed by the separation block 6 and the guide member 10 respectively accommodates two zipper belt structures, and the surface of the guide member 10 is provided with an arc-shaped card groove, and the two ends of the card groove on the surface of the guide member 10 are connected, and the card groove on the surface of the guide member 10 is engaged with the card block 11, and the card block 11 is fixedly installed on the two side surfaces of the rectangular parallelepiped section of the tooth block 2, and the card block 11 is made of compressible rubber material;

[0053] like Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown in the figure, when the zipper head structure moves to separate and close the tooth block 2, one end of the two zipper belt structures passes through the two sides of the separation block 6 in the zipper head structure respectively, and the other side surface of the zipper belt structure contacts the arc-shaped side edge of the guide member 10. At this time, the herringbone channel formed by the arc-shaped side edges of the two guide members 10 and the outer surface of the separation block 6 guides the movement of the zipper belt structure, making the movement of the zipper belt structure smoother. When the tooth block 2 on the surface of the zipper belt structure contacts the outer surface of the separation block 6, the sliding groove 9 on the side surface of the tooth block 2 contacts the rolling member 8. The rotating rolling member 8 converts the sliding friction between the tooth block 2 and the separation block 6 into rolling friction, making the zipper belt structure move more smoothly. At the same time, when the rubber block 11 on the side surface of the tooth block 2 contacts the surface of the guide member 10, it is compressed under the pressure of the surface of the guide member 10. As the tooth block 2 moves, the block 11 gradually moves into the groove on the surface of the guide member 10 and moves along the groove on the surface of the guide member 10, further guiding the movement of the tooth block 2 to prevent the zipper belt structure from deviating and clamping the clothes.

[0054] The outer surface of the zipper head structure is provided with a stopper structure, and the stopper structure prevents clothing from being rolled into the zipper through the contact friction between the outer support sheet 12 and the connecting cloth tape 1. The stopper structure includes an outer support sheet 12, and the outer support sheet 12 is an arc-shaped sheet structure made of rubber. The outer support sheet 12 is fixedly mounted on both side surfaces of the slider front plate 3 and the slider back plate 4.

[0055] like Figure 3 and Figure 4 As shown, when the zipper head structure moves on the surface of the zipper tape structure, the surface of the rubber outer support sheet 12 contacts the surface of the connecting cloth tape 1, and the arc-shaped outer support sheets 12 on both sides block the gaps on the surfaces of the slider front plate 3 and the slider back plate 4. The friction between the connecting cloth tape 1 and the outer support sheet 12 can prevent the zipper head structure from rolling up clothes during movement, thereby avoiding damage to the clothes.

[0056] Working principle: When using the zipper, a primary guide structure and a secondary guide structure are arranged in the zipper head structure composed of the slider front plate 3 and the slider back plate 4 to guide and prevent the zipper belt structure composed of the tooth block 2. The rolling member 8 on the surface of the separation block 6 in the zipper head structure cooperates with the sliding groove 9 on the surface of the tooth block 2, and the guide member 10 and the clamping block 11. During the movement of the zipper head structure, the zipper belt structure is guided and prevented from deflecting, thereby preventing the clothes from being clamped due to the movement deviation of the zipper belt structure. The outer support sheet 12 arranged on the outer surface of the slider front plate 3 and the slider back plate 4 is used to block the gap on the side surface of the zipper, thereby further reducing the risk of clothes being clamped by the zipper, thereby protecting the clothes from damage.

[0057] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An anti-pinch zipper, comprising a connecting tape (1), wherein the connecting tape (1) is a long strip structure, the connecting tape (1) is made of nylon, and one side of the connecting tape (1) is fixedly connected to a tooth block (2), characterized in that: The tooth block (2) is a two-section structure, wherein one section of the tooth block (2) is a rectangular parallelepiped structure with a through notch on the side surface, and the other section of the tooth block (2) is a rounded rectangular structure. The two sections of the tooth block (2) are connected by a rectangular parallelepiped block. The tooth block (2) is an integrally formed structure made of thermoplastic resin. The inner wall of the through notch on the side surface of the tooth block (2) is fixedly connected to the side surface of the connecting tape (1). A plurality of tooth blocks (2) are equidistantly distributed on one side of the connecting tape (1). The connecting tape (1) and a group of tooth blocks (2) form a zipper tape structure. The zipper tape structure is symmetrically provided with two tooth blocks (2). The tooth blocks (2) on the side surfaces of the two zipper tape structures are engaged with each other through the action of the zipper head structure to form a complete zipper structure. The zipper head structure forms a combined structure through a slider front plate (3) and a slider back plate (4), so that a guide mechanism is added inside the zipper head structure to realize the motion guide function of the zipper belt.

2. The anti-pinch zipper according to claim 1, characterized in that: The zipper head structure comprises a slider front plate (3), the slider front plate (3) is a rounded trapezoidal structure with a small upper part and a large lower part, both side surfaces of the slider front plate (3) are provided with long plate-shaped protrusions, one side of the slider front plate (3) is provided with a slider back plate (4), the slider back plate (4) has the same shape as the slider front plate (3), and the slider front plate (3) and the slider back plate (4) are arranged relative to each other, a pull tab (5) is rotatably connected to the side surface of the slider front plate (3), and the slider The slider front plate (3) and the slider back plate (4) are both made of thermoplastic resin material. The slider front plate (3) and the slider back plate (4) are fixedly connected via a separation block (6). The separation block (6) is a triangular wedge-shaped structure. The two side surfaces of the separation block (6) are respectively fixedly connected to the inner wall of the mounting groove (7). The mounting groove (7) has the same shape as the separation block (6). The two mounting grooves (7) are respectively arranged on one side surface of the slider front plate (3) and the slider back plate (4).

3. The anti-pinch zipper according to claim 2, characterized in that: The separation block (6) is located at the midpoint of the surfaces of the slider front plate (3) and the slider back plate (4), and the separation block (6) is in contact with the lower bottom edges of the slider front plate (3) and the slider back plate (4). The surface of the separation block (6) is provided with a square groove, and the surface of the separation block (6) is provided with a primary guide structure. The primary guide structure realizes primary guide deviation prevention of the zipper belt structure through the cooperation between the rolling element (8) and the sliding groove (9), so as to prevent the zipper belt structure from deviating and clamping the clothes during the movement.

4. The anti-pinch zipper according to claim 3, characterized in that: The primary guide structure comprises a rolling member (8), the rolling member (8) is a roller structure, the two ends of the rolling member (8) are rotatably mounted on the inner wall of a groove on the surface of the separation block (6), a plurality of rolling members (8) are evenly distributed on the inner wall of the groove on the surface of the separation block (6), the rolling member (8) is aligned with a sliding groove (9), and the sliding groove (9) is arranged on the outer surface of the rounded rectangular section of the tooth block (2).

5. The anti-pinch zipper according to claim 1, characterized in that: A secondary guide structure is arranged inside the zipper head structure, and the secondary guide structure realizes secondary guide deviation prevention for the zipper tape structure through a guide piece (10) and a clamping block (11).

6. The anti-pinch zipper according to claim 5, characterized in that: The secondary guide structure comprises a guide member (10), one side of which is an arc-shaped structure. The guide member (10) is installed inside the zipper head structure. Two symmetrically arranged guide members (10) form a group. The guide members (10) are provided in two groups. The two groups of guide members (10) are respectively fixedly installed on the surface of the slider front plate (3) and the slider back plate (4). The arc-shaped side edges of the two guide members (10) and the outer surface of the separation block (6) form a herringbone channel. The herringbone channel formed by the separation block (6) and the guide member (10) accommodates two zipper belt structures respectively. The surface of the guide member (10) is provided with an arc-shaped card slot. The two ends of the card slot on the surface of the guide member (10) are connected. The card slot on the surface of the guide member (10) is engaged and matched with a card block (11). The card block (11) is fixedly installed on the two side surfaces of the rectangular parallelepiped section of the tooth block (2). The card block (11) is made of compressible rubber material.

7. The anti-pinch zipper according to claim 1, characterized in that: The outer surface of the zipper head structure is provided with a stopper structure, and the stopper structure prevents clothing from being drawn into the zipper through contact friction between the outer support sheet (12) and the connecting cloth tape (1).

8. The anti-pinch zipper according to claim 7, characterized in that: The block structure comprises an outer support sheet (12), wherein the outer support sheet (12) is an arc-shaped sheet structure made of rubber material, and the outer support sheet (12) is fixedly mounted on both side surfaces of the slider front plate (3) and both side surfaces of the slider back plate (4).

9. A method for preparing an anti-pinch zipper according to any one of claims 1 to 8, characterized in that: The preparation method is applied to the anti-pinch zipper according to any one of claims 1 to 8, and the preparation method is as follows: The zipper assembly is prepared by using thermoplastic resin for injection molding to form a tooth block (2), a slider front plate (3), a slider back plate (4), a pull tab (5), a separation block (6), a guide member (10) and a clamping block (11); using rubber to form an arc-shaped outer support sheet (12); using a grinding wheel machine to open a sliding groove (9) on the surface of the tooth block (2); opening a groove on the surface of the separation block (6) and opening a groove on the surface of the guide member (10); The primary guide structure and the secondary guide structure are installed, a rolling member (8) is installed in the groove on the surface of the separation block (6), the guide member (10) is fixedly connected to the slider front plate (3) and the slider back plate (4) respectively, and the clamping block (11) is connected to the tooth block (2); The stopper structure is installed to fix the outer support plate (12) to the slider front plate (3) and the slider back plate (4) respectively; The zipper is assembled by fixing the separation block (6) to the mounting groove (7) on the surface of the slider front plate (3), connecting the tooth block (2) to the connecting cloth belt (1) to form a zipper belt structure, the two zipper belt structures pass through the channels on both sides of the separation block (6), and fixing the mounting groove (7) on the surface of the slider back plate (4) to the other side surface of the separation block (6), thereby completing the assembly of the zipper.

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