Semicircular tooth zipper

Abstract

According to the semicircular tooth zipper, the first zipper teeth and the second zipper teeth are provided with the abutting parts and the limiting parts correspondingly, and the abutting parts and the limiting parts are continuously adjacent and complement each other in function; the abutting part is located on the side close to the chain belt, and meshing is guided through the abutting part. The limiting part is located on the side away from the chain belt, and rigid blocking is formed through the limiting face. The zipper teeth on the two sides are arranged in a staggered mode, when the zipper teeth are meshed, the first abutting parts are attached to the second limiting parts, the second abutting parts are attached to the first limiting parts, and the self-locking effect is formed through the guiding effect of the abutting parts and the rigid blocking effect of the limiting parts. The two pairs of abutting parts and the limiting parts are attached to form multi-point contact, gaps between the zipper teeth are eliminated, external force is evenly dispersed to the whole meshing face, and local stress concentration is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of zippers, and in particular to a half-round tooth zipper. BACKGROUND

[0002] Traditional zippers, as a widely used connecting device, play an important role in many fields such as clothing, luggage, tents, etc. Its working principle is based on the interlocking of the teeth on both sides through the sliding of the puller, thereby achieving the opening and closing effect. These teeth are usually designed with symmetrical or regular geometric shapes, such as rectangles, trapezoids, etc., to ensure that they can smoothly engage under the action of the puller.

[0003] However, in actual use, there is often a certain gap between the teeth of the traditional zipper. This gap not only affects the smoothness of the zipper, but more importantly, when the zipper is subjected to transverse or longitudinal external force impact, the meshing surface between the teeth is prone to misalignment or partial disengagement due to limited contact area and uneven stress distribution. This phenomenon is called "top explosion", i.e. the teeth are blown open by external force and cannot maintain the closed state. The occurrence of top explosion not only reduces the durability of the zipper, but also affects the overall performance of the zipper, making it unable to meet the needs of specific application scenarios.

[0004] Therefore, it is necessary to provide a half-round tooth zipper that can effectively prevent the top explosion of the teeth. SUMMARY

[0005] Therefore, it is necessary to provide a half-round tooth zipper that can effectively prevent the top explosion of the teeth.

[0006] Embodiments of the present application provide a half-round tooth zipper, comprising:

[0007] A first chain belt comprising a plurality of first teeth arranged along the length direction of the first chain belt, the first teeth having a first abutting portion and a first limiting portion, the first abutting portion and the first limiting portion being adjacent and continuously arranged, the first limiting portion being arranged at a side away from the first chain belt, and the first abutting portion being arranged at a side close to the first chain belt;

[0008] A second chain belt comprising a plurality of second teeth arranged along the length direction of the second chain belt, the second teeth having a second abutting portion and a second limiting portion, the second abutting portion and the second limiting portion being adjacent and continuously arranged, the second limiting portion being arranged at an end away from the second chain belt, and the second abutting portion being arranged at a side close to the second chain belt;

[0009] The first chain teeth and the second chain teeth are arranged in an interlaced manner. When the first chain teeth and the second chain teeth are engaged, the first abutting portion can be in contact with the second limiting portion, and the second abutting portion is in contact with the first limiting portion, so as to close the first chain belt and the second chain belt.

[0010] In at least one embodiment of the present application, the first chain tooth has a first support portion, one end of the first support portion is arranged on the first chain belt, and the other end of the first support portion extends out of the first chain belt. Along the axial direction of the first support portion, the first limiting portion is protrudingly arranged on both sides of the first support portion.

[0011] In at least one embodiment of the present application, the second chain tooth has a second support portion, one end of the second support portion is arranged on the second chain belt, and the other end of the second support portion extends out of the second chain belt. Along the axial direction of the second support portion, the second limiting portion is protrudingly arranged on both sides of the second support portion.

[0012] In at least one embodiment of the present application, the first chain tooth further comprises a fixing portion, the fixing portion is arranged on the first chain belt, and along the axial direction of the first support portion, the fixing portion is protrudingly arranged on both sides of the first support portion. The fixing portion is arranged in a spaced manner with the first limiting portion, so as to form the first abutting portion between the fixing portion and the first limiting portion.

[0013] In at least one embodiment of the present application, the outer contour of the first limiting portion has a first convex arc surface and a second concave arc surface. Along the length direction of the first chain tooth, the included angle between the first convex arc surface and the first support portion is smaller than the included angle between the second concave arc surface and the first support portion.

[0014] In at least one embodiment of the present application, the outer contour of the first abutting portion has a third concave arc surface and a fourth concave arc surface. Along the length direction of the first chain tooth, the included angle between the third concave arc surface and the first support portion is smaller than the included angle between the fourth concave arc surface and the first support portion, and the third concave arc surface overlaps with the second concave arc surface.

[0015] In at least one embodiment of the present application, the outer contour of the second limiting portion has a fifth convex arc surface and a sixth concave arc surface. Along the length direction of the second chain tooth, the included angle between the fifth convex arc surface and the second support portion is smaller than the included angle between the sixth concave arc surface and the second support portion.

[0016] In at least one embodiment of the present application, the outer contour of the second abutting portion has a seventh concave arc surface and an eighth concave arc surface. Along the length direction of the second chain tooth, the included angle between the seventh concave arc surface and the second support portion is smaller than the included angle between the eighth concave arc surface and the second support portion, and the seventh concave arc surface overlaps with the sixth concave arc surface.

[0017] In at least one embodiment of the present application, the first limiting portion is provided with a blocking opening, which is arranged at the bottom of the first limiting portion along the thickness direction of the first chain tooth, and faces the second chain belt, so that when the first chain belt and the second chain belt are closed, the blocking opening is clamped with the second chain belt.

[0018] In at least one embodiment of the present application, the semi-circular tooth zipper further comprises:

[0019] The first zipper plate is arranged on the side of the first chain belt away from the first chain tooth;

[0020] The second zipper plate is arranged on the side of the second chain belt away from the second chain tooth;

[0021] The first zipper plate and the second zipper plate are both provided with a zipper slot formed along the length direction of the first chain belt.

[0022] The above-mentioned semi-circular tooth zipper is provided with abutting portions and limiting portions on the first chain tooth and the second chain tooth respectively, which are continuously adjacent and complementary in function. The abutting portion is located on the side close to the chain belt and is guided to engage through the abutting portion. The limiting portion is located on the side away from the chain belt and forms a rigid block through the limiting surface. The two sides of the chain tooth are staggered, the first abutting portion and the second limiting portion are attached when engaged, and the second abutting portion and the first limiting portion are attached. Through the guiding action of the abutting portion and the rigid blocking action of the limiting portion, a self-locking effect is formed. The attachment of the two pairs of abutting portions and limiting portions forms multiple-point contact, eliminates the gap between the chain teeth, and makes the external force evenly dispersed to the entire engaged surface, avoiding local stress concentration. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a semi-circular tooth zipper in an embodiment of the present application.

[0024] Figure 2 It is a structural schematic diagram of a first chain tooth.

[0025] Figure 3 It is a structural schematic diagram of the thickness direction of the first chain tooth.

[0026] Figure 4 It is a structural schematic diagram of the length direction of the first chain tooth.

[0027] Figure 5 It is a structural schematic diagram of the length direction of the second chain tooth.

[0028] Figure 6 It is a structural schematic diagram of the first chain tooth and the second chain tooth when engaged.

[0029] Figure 7 Structure diagram when the first chain tooth is separated from the second chain tooth.

[0030] Explanation of main component symbols

[0031] 100, a half-round tooth zipper; 10, a first chain belt; 20, a first chain tooth; 21, a first abutting portion; 211, a third concave arc surface; 212, a fourth concave arc surface; 22, a first limiting portion; 221, a first convex arc surface; 222, a second concave arc surface; 23, a first supporting portion; 24, a fixed portion; 25, a blocking opening; 30, a second chain belt; 40, a second chain tooth; 41, a second abutting portion; 411, a seventh concave arc surface; 412, an eighth concave arc surface; 42, a second limiting portion; 421, a fifth convex arc surface; 422, a sixth concave arc surface; 43, a second supporting portion; 50, a first zipper plate; 60, a second zipper plate; 70, a zipper slot. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0033] It should be noted that when one component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a middle component. When one component is considered to be "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and the like used herein are for illustrative purposes only.

[0034] The embodiments of the present application provide a half-round tooth zipper, comprising:

[0035] The first chain belt comprises a plurality of first chain teeth arranged along the length direction of the first chain belt, the first chain tooth has a first abutting portion and a first limiting portion, the first abutting portion and the first limiting portion are arranged adjacently and continuously, the first limiting portion is arranged on the side away from the first chain belt, and the first abutting portion is arranged on the side close to the first chain belt;

[0036] The second chain belt comprises a plurality of second chain teeth arranged along the length direction of the second chain belt, the second chain tooth has a second abutting portion and a second limiting portion, the second abutting portion and the second limiting portion are arranged adjacently and continuously, the second limiting portion is arranged on the end away from the second chain belt, and the second abutting portion is arranged on the side close to the second chain belt;

[0037] The first chain teeth and the second chain teeth are arranged in an interlaced manner, and when the first chain teeth and the second chain teeth are engaged, the first abutting portion can be attached to the second limiting portion, and the second abutting portion is attached to the first limiting portion, so as to close the first chain belt and the second chain belt.

[0038] The first chain tooth and the second chain tooth are arranged in an interlaced manner, and when the first chain tooth and the second chain tooth are engaged, the first abutting portion can be attached to the second limiting portion, and the second abutting portion is attached to the first limiting portion, so as to close the first chain belt and the second chain belt.

[0039] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the embodiments described below and the features in the embodiments can be combined with each other.

[0040] According to Figures 1-7 , the present application provides a kind of half-round tooth zipper 100, including: first chain belt 10 and second chain belt 30.

[0041] The first chain belt 10 includes a plurality of first chain teeth 20 arranged along the length direction of the first chain belt 10, the first chain tooth 20 has a first abutting portion 21 and a first limiting portion 22, the first abutting portion 21 and the first limiting portion 22 are adjacent and continuously arranged, the first limiting portion 22 is arranged on the side away from the first chain belt 10, and the first abutting portion 21 is arranged on the side close to the first chain belt 10;

[0042] The second chain belt 30 includes a plurality of second chain teeth 40 arranged along the length direction of the second chain belt 30, the second chain tooth 40 has a second abutting portion 41 and a second limiting portion 42, the second abutting portion 41 and the second limiting portion 42 are adjacent and continuously arranged, the second limiting portion 42 is arranged on the end away from the second chain belt 30, and the second abutting portion 41 is arranged on the side close to the second chain belt 30;

[0043] The first chain teeth 20 and the second chain teeth 40 are arranged in an interlaced manner, and when the first chain teeth 20 and the second chain teeth 40 are engaged, the first abutting portion 21 can be attached to the second limiting portion 42, and the second abutting portion 41 is attached to the first limiting portion 22, so as to close the first chain belt 10 and the second chain belt 30.

[0044] Specifically, a plurality of first chain teeth 20 are fixed on the base fabric of the first chain belt 10 at equal intervals, and a plurality of second chain teeth 40 are correspondingly arranged on the base fabric of the second chain belt 30, the two chain teeth are arranged in an interlaced manner, and when engaged, the first abutting portion 21 is attached to the second limiting portion 42, and the second abutting portion 41 is attached to the first limiting portion 22, thereby forming a complementary occlusion. The staggered arrangement forms a multi-stage lock structure when engaged, and external force needs to overcome the friction of multiple occlusion points to separate.

[0045] Further, the first chain tooth 20 and the second chain tooth 40 have the same structure, and the abutting portion and the limiting portion are adjacent and continuous. The abutting portion is a recessed structure, and the limiting portion is a protruding structure, so that the abutting portion and the limiting portion are connected through a curved surface. In the engagement process of the first chain tooth 20 and the second chain tooth 40, the abutting portion and the limiting portion form a stepped occlusion structure, which can more stably contact and distribute stress through nested attachment. The continuous curved surface can reduce the jamming phenomenon when the zipper slides, making the zipper more smoothly closed or opened, and improving the user experience. The abutting portion and the limiting portion are adjacent and continuous, which reduces the gap between the chain teeth when engaged, making the zipper more tightly closed and preventing the zipper from exploding.

[0046] Further, the first abutting portion 21 and the second limiting portion 42 form a first lock to resist longitudinal explosion force; the second abutting portion 41 and the first limiting portion 22 form a second lock to prevent transverse displacement. The staggered arrangement forms a linkage support when the adjacent chain teeth are stressed, and the local load is dispersed through multiple teeth.

[0047] In summary, the first limiting portion 22 of the first chain tooth 20 and the second abutting portion 41 of the second chain tooth 40 are guided to contact through a curved surface. The internal guide groove of the puller forces the chain teeth to converge towards the center, and the second limiting portion 42 gradually embeds into the first abutting portion 21, and at the same time, the first limiting portion 22 embeds into the second abutting portion 41. When impacted by external force, the first abutting portion 21 is transmitted to the second limiting portion 42 of the second chain tooth 40 close to the root of the second chain belt 30, and the tensile strength of the chain belt base fabric is used to resist deformation, and the convex arc surface of the first limiting portion 22 and the concave arc surface of the second abutting portion 41 are interlocked to offset.

[0048] In one embodiment, the first chain tooth 20 has a first support portion 23, one end of which is arranged on the first chain belt 10, and the other end of which extends out of the first chain belt 10, and the first limiting portion 22 is arranged on both sides of the first support portion 23 along the axial direction of the first support portion 23.

[0049] Specifically, the first chain tooth 20 has a first support portion 23, the base of which is fixed on the chain belt, and the other end of which extends out of the chain belt to form a cantilever structure, and the first limiting portion 22 is symmetrically arranged on both sides of the first support portion 23 along the axial direction of the first support portion 23, so that the first chain tooth 20 can effectively engage with the second chain tooth 40 on both sides thereof when the zipper is closed, and the lateral limiting support of the first support portion 23 is provided to prevent the chain tooth from being misaligned or tilted, so that the zipper is more tightly closed, and the zipper blowout phenomenon is prevented.

[0050] Further, the first limiting portion 22 protrudes on both sides of the first support portion 23, so that the limiting portion is a convex structure.

[0051] In one embodiment, the second chain tooth 40 has a second support portion 43, one end of which is arranged on the second chain belt 30, and the other end of which extends out of the second chain belt 30, and the second limiting portion 42 is arranged on both sides of the second support portion 43 along the axial direction of the second support portion 43.

[0052] Specifically, the second chain tooth 40 has the same structure as the first chain tooth 20, and the same structure has the same effect. The base of the second support portion 43 is fixed on the chain belt, and the other end of the second support portion 43 extends out of the chain belt to form a cantilever structure, and the second limiting portion 42 is symmetrically arranged on both sides of the second support portion 43 along the axial direction of the second support portion 43, so that the second chain tooth 40 can effectively engage with the first chain tooth 20 on both sides thereof when the zipper is closed, the limiting portions on both sides of the second chain tooth 40 respectively engage with the first abutting portions 21 of the two adjacent first chain teeth 20, and the lateral limiting support of the second support portion 43 is provided to prevent the chain tooth from being misaligned or tilted, so that the zipper is more tightly closed, and the zipper blowout phenomenon is prevented.

[0053] In one embodiment, the first chain tooth 20 further includes a fixing portion 24, which is arranged on the first chain belt 10 and protrudes on both sides of the first support portion 23 along the axial direction of the first support portion 23, and the fixing portion 24 is arranged at intervals with the first limiting portion 22 to form the first abutting portion 21 between the fixing portion 24 and the first limiting portion 22.

[0054] Specifically, the fixed part 24 and the first supporting part 23 are in an integrated structure. Since the fixed part 24 is directly fixed on the chain belt, the contact area with the chain belt is increased, which can effectively prevent the chain tooth from loosening due to long-term use and improve the overall structural strength of the zipper. The fixed part 24 enables the chain tooth to be more stable in maintaining the original position under stress, thereby improving the precision of engagement.

[0055] Further, the first abutting part 21 is formed between the fixed part 24 and the first limiting part 22, i.e., it is a spacing area, which ensures that the first abutting part 21 forms an embedded groove with the protruding fixed part 24 and the first limiting part 22 to accommodate the second limiting part 42. Similarly, since the first chain tooth 20 and the second chain tooth 40 have the same structure, the effect of the second abutting part 41 of the second chain tooth 40 is the same as that of the first abutting part 21, and will not be described again.

[0056] In a specific embodiment, the outer contour of the first limiting part 22 has a first convex arc surface 221 and a second concave arc surface 222. Along the length direction of the first chain tooth 20, the included angle between the first convex arc surface 221 and the first supporting part 23 is smaller than the included angle between the second concave arc surface 222 and the first supporting part 23.

[0057] Specifically, by optimizing the outer contour shape of the first limiting part 22 and designing the first convex arc surface 221 and the second concave arc surface 222, the shape of the limiting part is more in line with the mechanical properties of the zipper engagement and disengagement process. The first convex arc surface 221 is an outwardly convex arc structure, forming a streamlined shape. The second concave arc surface 222 is an inwardly concave arc structure, which can accommodate part of the structure and improve the fit compared to the convex arc surface.

[0058] Further, since the included angle between the first convex arc surface 221 and the first supporting part 23 is smaller, the entering track of the chain tooth is smoother when the slider is engaged, which is not easy to interfere, making the zipper more smooth in use. The larger concave arc angle ensures that the chain tooth can be more stably fitted after being closed, improves the limiting effect, and prevents the chain tooth from loosening or slipping due to external force.

[0059] In a specific embodiment, the outer contour of the first abutting part 21 has a third concave arc surface 211 and a fourth concave arc surface 212. Along the length direction of the first chain tooth 20, the included angle between the third concave arc surface 211 and the first supporting part 23 is smaller than the included angle between the fourth concave arc surface 212 and the first supporting part 23, and the third concave arc surface 211 overlaps with the second concave arc surface 222.

[0060] Specifically, the first abutting portion 21 is a concave structure, and the first abutting portion 21 and the first limiting portion 22 are continuous adjacent structures with curved surfaces, so that the outer contour of the first abutting portion 21 is formed with two concave curved surfaces for abutting and abutting with the second limiting portion 42. The third concave curved surface 211 overlaps the second concave curved surface 222, so that the third concave curved surface 211 and the second concave curved surface 222 jointly serve as the continuous part of the first abutting portion 21 and the first limiting portion 22.

[0061] In a specific embodiment, the outer contour of the second limiting portion 42 has a fifth convex curved surface 421 and a sixth concave curved surface 422, and the angle between the fifth convex curved surface 421 and the second supporting portion 43 is smaller than the angle between the sixth concave curved surface 422 and the second supporting portion 43 along the length direction of the second chain tooth 40.

[0062] Specifically, the outer contour of the second limiting portion 42 is designed to be able to fit with the outer contour of the first abutting portion 21, so that when the first chain tooth 20 and the second chain tooth 40 are engaged, the first abutting portion 21 and the second limiting portion 42 are fitted and abutted, the fifth convex curved surface 421 and the fourth concave curved surface 212 are fitted, and the sixth concave curved surface 422 and the second concave curved surface are in contact and abut.

[0063] In a specific embodiment, the outer contour of the second abutting portion 41 has a seventh concave curved surface 411 and an eighth concave curved surface 412, and the angle between the seventh concave curved surface 411 and the second supporting portion 43 is smaller than the angle between the eighth concave curved surface 412 and the second supporting portion 43 along the length direction of the second chain tooth 40, and the seventh concave curved surface 411 overlaps the sixth concave curved surface 422.

[0064] Specifically, the outer contour of the second abutting portion 41 is designed to be able to fit with the outer contour of the first limiting portion 22, so that when the first chain tooth 20 and the second chain tooth 40 are engaged, the second abutting portion 41 and the first limiting portion 22 are fitted and abutted, the first convex curved surface 221 and the eighth concave curved surface 412 are fitted, and the seventh concave curved surface 411 and the third concave curved surface 211 are in contact and abut.

[0065] In a specific embodiment, the first limiting portion 22 is provided with a blocking opening 25, and the blocking opening 25 is arranged at the bottom of the first limiting portion 22 along the thickness direction of the first chain tooth 20, and the blocking opening 25 is opposite to the second chain 30, so that when the first chain 10 and the second chain 30 are closed, the blocking opening 25 is clamped with the second chain 30.

[0066] Specifically, the blocking opening 25 is located on the opening structure on the first limiting portion 22, and the blocking opening 25 is in a stepped shape and is designed to be clamped with the second chain belt 30, thereby providing additional limiting effect. When the first chain tooth 20 is engaged with the second chain tooth 40, the blocking opening 25 on the first chain tooth 20 is vertically clamped with the base cloth of the second chain belt 30, and the blocking opening 25 of the second chain tooth 40 is vertically clamped with the base cloth of the first chain belt 10, so that the first chain tooth 20 and the second chain tooth 40 generate a shear locking effect under the action of the longitudinal top blast force, thereby improving the anti-top blast force.

[0067] In a specific embodiment, the semi-circular tooth zipper further comprises: a first zipper plate 50 arranged on a side of the first chain belt 10 away from the first chain tooth 20; and a second zipper plate 60 arranged on a side of the second chain belt 30 away from the second chain tooth 40; wherein the first zipper plate 50 and the second zipper plate 60 are both provided with a zipper slot 70 formed along the length direction of the first chain belt 10.

[0068] Specifically, the first supporting portion 23 and the first zipper plate 50 are in an integrated structure, and the first supporting portion 23 and the first zipper plate 50 fix the first chain tooth 20 on the first chain belt 10 by extrusion or sewing. Similarly, the second supporting portion 43 and the second zipper plate 60 are in an integrated structure, and the second supporting portion 43 and the second zipper plate 60 fix the second chain tooth 40 on the second chain belt 30 by extrusion or sewing.

[0069] Further, the guide column of the zipper head is embedded in the zipper slot 70, and with the sliding of the zipper head, the first chain tooth 20 and the second chain tooth 40 are gradually closed.

[0070] Therefore, the semi-circular tooth zipper 100 provided above, through the first chain tooth 20 and the second chain tooth 40 which are both respectively provided with an abutting portion and a limiting portion, the two portions are continuously adjacent and complementary in function; the abutting portion is located on the side close to the chain belt and guides the engagement through the abutting portion; the limiting portion is located on the side away from the chain belt and forms a rigid block through the limiting surface. The two sides of the chain tooth are staggered, the first abutting portion 21 and the second limiting portion 42 are attached when engaged, and the second abutting portion 41 and the first limiting portion 22 are attached, thereby forming a self-locking effect through the guiding effect of the abutting portion and the rigid blocking effect of the limiting portion. The attachment of the two pairs of abutting portions and limiting portions forms multiple-point contact, eliminates the gap between the chain teeth, and uniformly disperses the external force to the entire engagement surface, thereby avoiding local stress concentration.

[0071] The above only describes the embodiments of the present application, and it should be noted that those skilled in the art can make improvements without departing from the creative concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A half-round tooth zipper characterized in that, The first chain belt comprises a plurality of first chain teeth arranged along the length direction of the first chain belt, the first chain tooth has a first abutting portion and a first limiting portion, the first abutting portion and the first limiting portion are arranged adjacently and continuously, the first limiting portion is arranged at the side away from the first chain belt, and the first abutting portion is arranged at the side close to the first chain belt. The second chain belt comprises a plurality of second chain teeth arranged along the length direction of the second chain belt, the second chain tooth has a second abutting portion and a second limiting portion, the second abutting portion and the second limiting portion are arranged adjacently and continuously, the second limiting portion is arranged at the end away from the second chain belt, and the second abutting portion is arranged at the side close to the second chain belt. The first chain tooth has a first supporting portion, one end of the first supporting portion is arranged on the first chain belt, and the other end of the first supporting portion extends out of the first chain belt, and along the axial direction of the first supporting portion, the first limiting portion is arranged on both sides of the first supporting portion. The second chain tooth has a second supporting portion, one end of the second supporting portion is arranged on the second chain belt, and the other end of the second supporting portion extends out of the second chain belt, and along the axial direction of the second supporting portion, the second limiting portion is arranged on both sides of the second supporting portion.

2. A half-round tooth zipper according to claim 1, wherein The first chain tooth further comprises a fixing portion, the fixing portion is arranged on the first chain belt, and along the axial direction of the first supporting portion, the fixing portion is arranged on both sides of the first supporting portion, and the fixing portion is arranged spaced apart from the first limiting portion to form the first abutting portion between the fixing portion and the first limiting portion.

3. A half-round tooth zipper according to claim 1, wherein The outer contour of the first limiting portion has a first convex arc surface and a second concave arc surface, and along the length direction of the first chain tooth, the included angle between the first convex arc surface and the first supporting portion is smaller than the included angle between the second concave arc surface and the first supporting portion.

4. A half-round tooth zipper according to claim 2, wherein The outer contour of the first abutting portion has a third concave arc surface and a fourth concave arc surface, and along the length direction of the first chain tooth, the included angle between the third concave arc surface and the first supporting portion is smaller than the included angle between the fourth concave arc surface and the first supporting portion, and the third concave arc surface overlaps with the second concave arc surface.

5. A half-round tooth zipper according to claim 2, wherein The outer contour of the second limiting portion has a fifth convex arc surface and a sixth concave arc surface, and along the length direction of the second chain tooth, the included angle between the fifth convex arc surface and the second supporting portion is smaller than the included angle between the sixth concave arc surface and the second supporting portion.

6. A half-round tooth zipper according to claim 5, wherein The outer contour of the second abutting portion has a seventh concave arc surface and an eighth concave arc surface, and along the length direction of the second chain tooth, the included angle between the seventh concave arc surface and the second supporting portion is smaller than the included angle between the eighth concave arc surface and the second supporting portion, and the seventh concave arc surface overlaps with the sixth concave arc surface.

7. A half-round tooth zipper according to claim 3, wherein ​ 8. A half-round tooth zipper according to claim 7, wherein ​ 9. A half-round tooth zipper according to claim 1, wherein The first limiting part is provided with a blocking opening. Along the thickness direction of the first chain tooth, the blocking opening is arranged at the bottom of the first limiting part, and the blocking opening is arranged opposite to the second chain belt, so that when the first chain belt and the second chain belt are closed, the blocking opening is clamped with the second chain belt.

10. A half-round tooth zipper according to claim 1, wherein The semicircular tooth zipper further comprises: A first zipper plate is arranged on the side of the first chain belt away from the first chain tooth; A second zipper plate is arranged on the side of the second chain belt away from the second chain tooth; The first zipper plate and the second zipper plate are both provided with a zipper slot formed along the length direction of the first chain belt.

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