A double anti-slip zipper tooth structure and zipper

Abstract

This utility model discloses a double anti-detachment zipper tooth structure and zipper, including multiple zipper tooth bodies, each zipper tooth body including a toothed portion and a connecting portion, and an extension portion. The toothed portion, connecting portion, and extension portion are arranged sequentially. The zipper tooth body also includes an anti-detachment groove and a first clearance groove, the anti-detachment groove and the first clearance groove are connected, and the groove width of the anti-detachment groove is greater than the groove width of the first clearance groove. A connecting post is also provided in the first clearance groove, and the connecting post is at least partially located in the extension portion, so that the connecting post and the extension portion partially overlap in the axial projection of the connecting post. This utility model proposes to increase the distance between the connecting post and the anti-detachment groove by setting an extension portion on the zipper tooth body and setting at least part of the connecting post in the extension portion, thus solving the problem that setting a connecting hole on the tape makes the chain weaker.

Description

Technical Field

[0001] This utility model belongs to the field of zippers, specifically relating to a double anti-detachment zipper tooth structure and zipper. Background Technology

[0002] Zippers, as a common opening and closing tool, are widely used in clothing and bags due to their ease of operation and good sealing performance. Existing zippers are generally divided into metal zippers and resin zippers, both consisting of interlocking teeth and a fabric strip that connects to the clothing or bag. To ensure the reliable connection between the teeth and the fabric strip, most existing resin zippers typically use a fabric core or connecting hole on the fabric strip, and then injection mold the teeth onto the fabric strip. The fabric core or connecting hole prevents the teeth from detaching from the fabric strip.

[0003] In existing technologies, such as patent document CN210203589U, a chain tooth, zipper tape, and zipper are disclosed. By setting a fixing groove on the chain tooth and connecting it to the chain's reinforcing ribs through the fixing groove, the chain tooth is fixed to the chain and prevented from detaching from the chain. However, the tape has a certain deformation capacity. When a force causing separation occurs between the chain tooth and the chain, there is a risk that the tape will deform and the chain tooth will detach from the chain. Furthermore, the fixing groove of the chain tooth is relatively close to the side of the chain tooth. If a connecting hole is added to the chain tape to further prevent the chain tooth from detaching, the proximity of the connecting hole to the reinforcing ribs will actually make the chain weaker, increasing the risk of chain breakage when a force causing separation occurs between the chain tooth and the chain. Summary of the Invention

[0004] To address the problems in the existing technology, this utility model proposes a double anti-detachment chain tooth structure and zipper. By setting an extension on the chain tooth body and placing at least part of the connecting post in the extension, the distance between the connecting post and the anti-detachment groove is increased, thus solving the problem that setting a connecting hole on the fabric tape makes the chain weaker.

[0005] This utility model is implemented as follows: a double anti-detachment chain tooth structure includes multiple chain tooth bodies arranged in parallel. The multiple chain tooth bodies are installed on the fabric tape of the zipper. Each chain tooth body includes teeth for meshing and a connecting part connected to the fabric tape. The chain tooth body also includes an extension part connected to the connecting part. The teeth, connecting part and extension part are arranged in sequence.

[0006] The chain tooth body also includes an anti-detachment groove penetrating the connecting part and a first clearance groove penetrating the connecting part and the extension part. The anti-detachment groove is connected to the first clearance groove, and the width of the anti-detachment groove is greater than the width of the first clearance groove. The fabric tape is provided with a fabric core that is adapted to the anti-detachment groove. The fabric core fits tightly with the anti-detachment groove. When the width of the anti-detachment groove is greater than the width of the first clearance groove, a blocking part is formed at the connection between the anti-detachment groove and the first clearance groove to prevent the fabric core from coming out of the anti-detachment groove, so as to achieve the first layer of anti-detachment effect.

[0007] The first clearance groove also includes a connecting post, at least partially located within the extension, such that the connecting post and the extension partially overlap in the axial projection of the connecting post. Because the connecting post is at least partially located within the extension, when a connecting hole adapted to the connecting post is provided on the fabric tape, the connecting hole can be positioned away from the fabric core, thus preventing the connecting hole from being too close to the fabric core, which would result in a thinner fabric tape and reduce the risk of the connecting hole causing the fabric tape to break, achieving a second layer of anti-detachment effect. When the anti-detachment groove cooperates with the connecting post, the chain tooth body achieves a double anti-detachment effect, improving the reliability of the chain tooth body connection.

[0008] Preferably, a gap is provided between the connecting post and the anti-detachment groove, the width of the gap being greater than or equal to the radial dimension of the connecting post, which further moves the connecting hole on the fabric tape away from the fabric core, thereby improving the tensile strength of the fabric tape, further reducing the risk of fabric tape breakage caused by the connecting hole, and improving the reliability of the fabric tape.

[0009] Preferably, the teeth include a first tooth and a second tooth arranged vertically. When the zipper is closed, the first tooth is located on the outside of the zipper, and the second tooth is located on the inside of the zipper, so that the zipper forms a double seal and further improves the sealing performance of the zipper.

[0010] Specifically, the first tooth is T-shaped, and its two sides are symmetrically arranged, each including a continuously arranged convex tooth and a concave tooth. When the zipper is closed, the convex tooth is embedded in the concave tooth of the adjacent zipper tooth body. By interlocking the first teeth, the adjacent first teeth are more firmly engaged, thereby improving the reliability of the first tooth engagement.

[0011] Specifically, the second teeth decrease in size from the inside out, forming a cone shape. When the zipper is closed, the second teeth of adjacent zipper bodies are positioned opposite each other and staggered. The cone-shaped second teeth can guide the zipper bodies during engagement, improving the smoothness of engagement. When the zipper is disengaged, the cone-shaped second teeth are easier to separate, improving the smoothness of disengagement. This, in turn, improves the convenience of engagement and disengagement of the zipper bodies.

[0012] Preferably, the extension gradually decreases in size from the side connected to the connecting portion to the other side. When multiple zipper teeth are arranged side by side, a second clearance groove that gradually increases in size from the inside to the outside is formed between the extensions of adjacent zipper teeth. When the zipper is separated, the zipper tape bends to both sides under the action of the zipper pull. The second clearance groove is used to prevent adjacent zipper teeth from squeezing each other when the tape bends, thereby reducing the wear of the zipper teeth and improving their service life.

[0013] Preferably, the anti-detachment groove has a circular or near-circular cross-section, and the connecting post is cylindrical. When a force causing separation occurs between the chain tooth body and the fabric tape, the circular or near-circular cross-section of the anti-detachment groove prevents sharp edges or corners from contacting the fabric core, thereby preventing sharp edges or corners from cutting the fabric core and improving the reliability of the connection between the chain tooth body and the fabric tape. Similarly, the cylindrical connecting post further improves the reliability of the connection between the chain tooth body and the fabric tape.

[0014] Specifically, the near-circular cross-section is formed by connecting a circular arc segment with multiple circular arc segments and / or multiple straight line segments end to end, and the sum of the lengths of the circular arc segments is greater than half of the perimeter of the cross-section.

[0015] Preferably, the chain tooth body is integrally formed by injection molding. Since the chain tooth body has a complex shape, injection molding can form the complex chain tooth body in one step, reducing the processing steps of the chain tooth body and thus saving the production cost of the chain tooth body.

[0016] A zipper includes a chain belt disposed opposite to each other, and a zipper head for driving the chain belt to engage or disengage, wherein the chain belt is provided with the aforementioned chain tooth structure.

[0017] The beneficial effects of this utility model are:

[0018] This invention proposes a double anti-detachment zipper tooth structure and zipper. By providing an extension portion on the zipper tooth body and at least partially housing the connecting post within the extension portion, the connecting hole on the fabric tape is moved away from the fabric core. This prevents the connecting hole from being too close to the fabric core, which would make the fabric tape thinner and reduces the risk of the connecting hole causing the fabric tape to break. Furthermore, when the anti-detachment groove and the connecting post cooperate, the zipper tooth body achieves a double anti-detachment effect, improving the reliability of the zipper tooth body connection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the meshing of the chain tooth mechanism of this utility model;

[0020] Figure 2 This is a schematic diagram of the chain tooth body of the chain tooth mechanism of this utility model;

[0021] Figure 3 This is another schematic diagram of the chain tooth body of the chain tooth mechanism of this utility model.

[0022] Figure label:

[0023] 1. Chain tooth body; 2. Fabric tape; 11. Tooth; 12. Connecting part; 13. Extension part; 14. Connecting post; 15. Anti-detachment groove; 16. First clearance groove; 111. First tooth; 112. Second tooth; 1111. Convex tooth; 1112. Concave tooth. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] like Figures 1-3 As shown, a double anti-detachment chain tooth structure includes multiple chain tooth bodies 1 arranged in parallel. The multiple chain tooth bodies 1 are installed on the fabric tape 2 of the zipper. Each chain tooth body 1 includes a tooth 11 for meshing and a connecting part 12 connected to the fabric tape 2. The chain tooth body 1 also includes an extension part 13 connected to the connecting part 12. The tooth 11, the connecting part 12 and the extension part 13 are arranged in sequence.

[0027] In this embodiment, the chain tooth body 1 is integrally formed by injection molding. Since the chain tooth body 1 has a complex shape, injection molding can form the complex chain tooth body 1 in one step, reducing the processing steps of the chain tooth body 1 and thus saving the production cost of the chain tooth body 1.

[0028] In this embodiment, the toothed portion 11 includes a first tooth 111 and a second tooth 112 arranged vertically. When the zipper is closed, the first tooth 111 is located on the outside of the zipper, and the second tooth 112 is located on the inside of the zipper, so that the zipper forms a double seal, which further improves the sealing performance of the zipper.

[0029] Specifically, the first tooth 111 is T-shaped, and the two sides of the first tooth 111 are symmetrically arranged, each including a continuously arranged convex tooth 1111 and a concave tooth 1112. When the zipper is closed, the convex tooth 1111 is embedded in the concave tooth 1112 of the adjacent zipper tooth body 1. By interlocking the first teeth 111, the adjacent first teeth 111 are more firmly engaged, thereby improving the reliability of the engagement of the first teeth 111.

[0030] The chain tooth body 1 also includes an anti-detachment groove 15 penetrating the connecting part 12 and a first clearance groove 16 penetrating the connecting part 12 and the extension part 13. The anti-detachment groove 15 is connected to the first clearance groove 16, and the width of the anti-detachment groove 15 is greater than the width of the first clearance groove 16. The fabric tape 2 is provided with a fabric core that is adapted to the anti-detachment groove 15. The fabric core fits tightly with the anti-detachment groove 15. When the width of the anti-detachment groove 15 is greater than the width of the first clearance groove 16, a blocking part is formed at the connection between the anti-detachment groove 15 and the first clearance groove 16 to prevent the fabric core from coming out of the anti-detachment groove 15, so as to achieve the first layer of anti-detachment effect.

[0031] The first clearance groove 16 is further provided with a connecting post 14, which is at least partially located within the extension 13, such that the connecting post 14 and the extension 13 partially overlap in the axial projection of the connecting post 14. Since the connecting post 14 is at least partially located within the extension 13, when a connecting hole adapted to the connecting post 14 is provided on the fabric tape 2, the connecting hole can be moved away from the fabric core, thereby preventing the connecting hole from being too close to the fabric core, which would make the fabric tape 2 thinner and reduce the risk of the connecting hole causing the fabric tape 2 to break, thus achieving a second layer of anti-detachment effect. When the anti-detachment groove 15 cooperates with the connecting post 14, the chain tooth body 1 achieves a double anti-detachment effect, improving the reliability of the chain tooth body 1 connection.

[0032] In this embodiment, the extension 13 gradually decreases in size from the side connected to the connecting portion 12 to the other side. When multiple zipper tooth bodies 1 are arranged side by side, a second clearance groove that gradually increases in size from the inside to the outside is formed between the extensions 13 of adjacent zipper tooth bodies 1. When the zipper is separated, the zipper tape 2 bends to both sides under the action of the zipper pull. The second clearance groove is used to prevent adjacent zipper tooth bodies 1 from squeezing each other when the tape 2 bends, thereby reducing the wear of the zipper tooth bodies 1 and improving the service life of the zipper tooth bodies 1.

[0033] In this embodiment, a gap is provided between the connecting post 14 and the anti-detachment groove 15. The width of the gap is greater than or equal to the radial dimension of the connecting post 14, which further moves the connecting hole on the fabric tape 2 away from the fabric core, thereby improving the tensile strength of the fabric tape 2, further reducing the risk of the fabric tape 2 breaking due to the connecting hole, and improving the reliability of the fabric tape 2.

[0034] Specifically, the second teeth 112 decrease in size from the inside out and are conical. When the zipper is closed, the second teeth 112 of adjacent zipper teeth 1 are arranged opposite to each other and staggered. The conical second teeth 112 can guide the zipper teeth 1 when they are engaged, improving the smoothness of engagement. When the zipper is disengaged, the conical second teeth 112 are easier to separate, improving the smoothness of disengagement. This improves the convenience of engagement and disengagement of the zipper teeth 1.

[0035] In this embodiment, the anti-detachment groove 15 has a circular or near-circular cross-section, and the connecting post 14 is cylindrical. When a force is generated between the chain tooth body 1 and the fabric tape 2 that causes them to separate, the circular or near-circular cross-section of the anti-detachment groove 15 prevents sharp edges or corners from contacting the fabric core of the fabric tape 2, thereby preventing sharp edges or corners from cutting the fabric core and improving the reliability of the connection between the chain tooth body 1 and the fabric tape 2. Similarly, the cylindrical connecting post 14 further improves the reliability of the connection between the chain tooth body 1 and the fabric tape 2.

[0036] Specifically, the near-circular cross-section is formed by connecting a circular arc segment, multiple circular arc segments, and multiple straight line segments end to end, and the sum of the lengths of the circular arc segments is greater than half of the perimeter of the cross-section.

[0037] Example 2

[0038] A zipper includes a chain belt disposed opposite to each other, and a zipper head for driving the chain belt to engage or disengage, wherein the chain belt is provided with the chain tooth structure described in Embodiment 1.

[0039] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A double anti-detachment zipper tooth structure, comprising a plurality of parallel-arranged zipper tooth bodies, wherein the plurality of zipper tooth bodies are mounted on the fabric tape of the zipper, and each zipper tooth body includes teeth for engagement and a connecting portion for connection with the fabric tape, characterized in that: The chain tooth body also includes an extension connected to the connecting portion, and the tooth, the connecting portion and the extension are arranged in sequence; The chain tooth body also includes an anti-detachment groove penetrating the connecting part and a first clearance groove penetrating the connecting part and the extension part. The anti-detachment groove is connected to the first clearance groove, and the groove width of the anti-detachment groove is greater than the groove width of the first clearance groove. The first clearance groove is also provided with a connecting post, which is at least partially located in the extension, such that the connecting post and the extension partially overlap in the axial projection of the connecting post.

2. The chain tooth structure with dual anti-detachment feature according to claim 1, characterized in that: A gap is provided between the connecting post and the anti-detachment groove, and the width of the gap is greater than or equal to the radial dimension of the connecting post.

3. The double anti-detachment chain tooth structure according to claim 1, characterized in that: The teeth include a first tooth and a second tooth arranged vertically. When the zipper is closed, the first tooth is located on the outside of the zipper, and the second tooth is located on the inside of the zipper.

4. The double anti-detachment chain tooth structure according to claim 3, characterized in that: The first tooth is T-shaped and symmetrically arranged on both sides, each including a continuously arranged convex tooth and a concave tooth. When the zipper is closed, the convex tooth is embedded in the concave tooth of the adjacent zipper tooth body.

5. The double anti-detachment chain tooth structure according to claim 3, characterized in that: The second tooth decreases in size from the inside out and is cone-shaped; when the zipper is closed, the second teeth of adjacent zipper teeth are opposite to each other and staggered.

6. The double anti-detachment chain tooth structure according to claim 1, characterized in that: The extension gradually decreases in size from the side connected to the connecting part to the other side. When multiple chain tooth bodies are arranged side by side, a second clearance groove that gradually increases in size from the inside to the outside is formed between the extensions of adjacent chain tooth bodies.

7. The double anti-detachment chain tooth structure according to claim 1, characterized in that: The anti-detachment groove has a circular or near-circular cross-section, and the connecting column is cylindrical.

8. The double anti-detachment chain tooth structure according to claim 1, characterized in that: The chain tooth body is integrally molded by injection molding.

9. A zipper, comprising opposingly disposed chain straps and a zipper pull for driving the chain straps to engage or disengage, characterized in that: The chain belt is provided with a chain tooth structure as described in any one of claims 1-8.

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