Connecting ring for zipper and zipper

Abstract

The utility model discloses a connecting ring for a zipper, which comprises a ring body made by adopting an integral process, the ring body is of a flat structure, a through hole is formed in the middle of the ring body, and fillets or chamfers are arranged at the edges of openings at two ends of the through hole. The edge of the through hole in the ring body adopts the fillet or the chamfer angle, so that the friction between the ring body and the zipper pulls as well as between the ring body and the zipper pulls can be reduced, the abrasion between the zipper pulls is reduced, the service lives of the zipper pulls and the zipper pulls are prolonged, and the service life of the zipper is further prolonged. The integral process of the ring body can adopt punching, and the ring body has the advantages of being high in efficiency and low in cost. If necessary, the composite material can be obtained by injection molding.

Description

Technical Field

[0001] The utility model relates to the field of zippers, in particular to a connecting ring for a zipper.

[0002] The utility model relates to the field of zippers, in particular to a zipper with a connecting ring. Background Technique

[0003] A zipper is a fastener composed of two tapes each having a row of metal or plastic teeth, used to connect the edges of an opening. The zipper head can pull the two rows of teeth into an interlocked position to close the opening. Zippers are mainly used to sew on clothes, pockets, or leather bags, etc.

[0004] The pull head is an important component of the zipper. There are also many types of pull heads. There is an automatic pull head, which is further subdivided into a common automatic head zipper (abbreviated as an automatic zipper), a hidden automatic head zipper (abbreviated as a hidden zipper), etc. A common automatic head zipper generally consists of a cap, a spring piece, a horse hook, and a pull tab. After assembly, the horse hook can easily fit into the gap between the teeth under the action of the spring piece to lock the pull head; when the pull tab is lifted, the horse hook disengages from the tooth gap and the pull head can slide freely. For a hidden automatic head zipper, the appearance of the hidden automatic head is different from that of the common automatic head, and the pull head can be hidden when applied to a hidden zipper. That is, the common automatic head zipper is larger and thicker than the hidden zipper.

[0005] A self-locking zipper head is disclosed in the existing Chinese patent with the application number 202022484586.7, which includes an upper locking plate (equivalent to an upper locking horse hook), a lower locking plate (equivalent to the body), and a support core (the support core is a rivet for riveting between the upper locking plate and the lower locking plate) arranged between the upper locking plate and the lower locking plate. A pull nose (equivalent to a pull tab) is connected to the side of the upper locking plate facing away from the lower locking plate. A pull ring is sleeved on the pull nose. A pull tab is connected to the outer side wall of the pull ring. A locking member is arranged on the side of the pull nose facing the upper locking plate. The locking member includes a locking rod. A placement groove for the locking rod to be inserted into is opened on the side of the pull nose facing the upper locking plate along its own length direction. One end of the locking rod is connected with a locking block. A locking hole for the locking block to pass through is opened on the upper locking plate. An elastic piece for pressing against the locking rod is arranged on the bottom wall of the placement groove. A positioning block is connected to the end of the locking rod away from the locking block. A positioning groove for the positioning block to be inserted into is opened on the side of one of the limiting blocks facing away from the upper locking plate. In this existing solution, the pull tab is connected together through an integrated pull ring and pull nose. However, since the pull ring and the pull nose often rub against each other during the working state, the contact part between the pull ring and the pull nose will be worn. Over time, the pull ring, the pull nose, or the upper locking horse hook will be worn or even broken. Since the pull ring is made of a relatively thin metal sheet, the pull ring is often the first structure to break.

[0006] The technology of existing zippers has been relatively mature and the overall structure is simple. Therefore, the competitiveness of zippers in the market mainly lies in how to improve the service life of zippers. All existing pull heads are electroplated, painted or electrophoresed. Without chamfers, it will cause wear between the pull ring and the locking hook on the pull head, resulting in paint peeling or electroplating layer peeling off. Summary of the Invention

[0007] In order to overcome the deficiencies of the prior art, the utility model provides a connecting ring for a zipper, which helps to reduce wear and extend the service life.

[0008] The technical solution adopted by the utility model to solve its technical problems is: a connecting ring for a zipper, including a ring body made by an integral process. The ring body is a flat structure, and a through hole is opened in the middle of the ring body. Chamfered corners or chamfered bevels are provided at the opening edges at both ends of the through hole.

[0009] The beneficial effect of the utility model is: chamfered corners or chamfered bevels are adopted at the edges of the through hole on the ring body, which can reduce the friction when the ring body contacts with the pull tab and between the ring bodies, thereby reducing the wear between the pull tabs, and further extending the service life of each pull tab, and further extending the service life of the zipper. Among them, the integral process of the ring body can be obtained by stamping, which has the characteristics of high efficiency and low cost. If necessary, it can also be obtained by injection molding.

[0010] Further preferably, the cross-sectional shape of the through hole is a triangle, and chamfered corners or chamfered bevels are provided at the three corner positions of the through hole to ensure that the integrally formed ring body is more stable.

[0011] Further preferably, the shape of the ring body matches the shape of the through hole, and chamfered corners or chamfered bevels are adopted at the inner and outer edges of the ring body to further ensure that the integrally formed ring body is more stable.

[0012] Further preferably, if a chamfered bevel is adopted, the range of the chamfered bevel is 2~88°, and the length of the chamfered surface is 0.05~0.4mm; if a chamfered corner is adopted, the range of the chamfered corner is 0.05mm≤R≤0.4mm.

[0013] In order to overcome the deficiencies of the prior art, the utility model provides a zipper, which helps to reduce the wear of the pull tab and extend the service life.

[0014] The technical solution adopted by the utility model to solve its technical problems is: a zipper, characterized in that it includes a pull head body and a pull tab. A pull tab is provided on the upper part of the pull head body, and the aforementioned connecting ring is sleeved on the pull tab. An installation hole is opened at the end of the pull tab, and the installation hole is sleeved on the connecting ring.

[0015] The beneficial effects of the present utility model are as follows: The edges of the through holes on the ring body are chamfered or beveled, which can reduce the friction when the ring body contacts with the pull tab, thereby reducing the wear between the pull tabs and further extending the service life of the pull tabs and the zipper. Among them, the integral process of the ring body can be obtained by stamping, which has the characteristics of high efficiency and low cost. If necessary, it can also be obtained by injection molding.

[0016] Further preferably, the end of the pull tab is provided with a left semi-circle and a right semi-circle that matches the left semi-circle, and the mounting hole on the pull tab is formed by splicing the left semi-circle and the right semi-circle. The pull tab is connected to the ring body through the mounting hole formed by splicing the left semi-circle and the right semi-circle, ensuring the feasibility of the socket connection of the ring body under the integral setting and the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model.

[0018] Figure 2 It is a top view of Embodiment 1 of the present utility model.

[0019] Figure 3 It is a partial cross-sectional view of Embodiment 1 of the present utility model.

[0020] Figure 4 It is a schematic structural diagram of Embodiment 2 of the present utility model.

[0021] Figure 5 It is a partial cross-sectional view of Embodiment 2 of the present utility model.

[0022] Figure 6 It is a schematic structural diagram of Embodiment 3 of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described below with reference to the accompanying drawings:

[0024] Embodiment 1: As Figures 1 to 3 shown, this embodiment includes a connecting ring, which is a ring body 1 made by an integral stamping process. The ring body is a flat structure, and a triangular through hole 2 is opened in the middle of the ring body 1. Chamfered edges 21 are provided at both ends of the through hole 2. In addition, the cross-sectional shape of the through hole 2 is triangular, and chamfered edges 22 are provided at the positions of the three corners (vertices) of the through hole 2, thereby ensuring that the integrally formed ring body 1 is more stable. The shape of the ring body 1 matches the shape of the through hole 2, and both the inner edge and the outer edge of the ring body 1 adopt a chamfered edge 11 structure, further ensuring that the integrally formed ring body 1 is more stable.

[0025] In this embodiment, the range of each chamfered edge is 0.05 mm ≤ R ≤ 0.4 mm.

[0026] Example 2: As Figures 4 to 5 shown, the difference from Example 1 is that chamfering is replaced by filleting. In this embodiment, each chamfer can be entirely or partially replaced with a fillet structure. Therefore, the reference numerals of each chamfer in Example 1 can be used interchangeably with those in this embodiment. However, to avoid confusion with Example 1, the reference numerals in the drawings are specifically noted: fillets 21a are provided at the opening edges at both ends of the through hole 2, fillets 22a are provided at three corners (vertices) of the through hole 2, and a fillet 1a is used for the outer edge of the ring body 1.

[0027] In addition, in this embodiment, the range of the fillet is 2 to 88°, and the length of the chamfered surface is 0.05 to 0.4 mm.

[0028] Example 3: As Figure 6 shown, this embodiment includes a zipper, which includes a slider body 3 and a pull tab 4. A pull tab 5 is provided on the upper part of the slider body 3. A connecting ring disclosed in Example 1 is sleeved on the pull tab 5. An installation hole 41 is provided at the end of the pull tab 4, and the installation hole 41 is sleeved on the ring body 1. A left semi-circle 411 and a right semi-circle 412 matching the left semi-circle 411 are provided at the end of the pull tab 4. The installation hole 41 on the pull tab 4 is formed by splicing the left semi-circle 411 and the right semi-circle 412, thereby ensuring the feasibility of sleeving the ring body 1 under an integral setting and the convenience of installation. In addition, the connecting ring in this embodiment can also adopt the connecting ring solution disclosed in Example 2.

[0029] In this embodiment, fillets or chamfers are used at the edges of the through holes on the ring body 1, which can reduce the friction when the ring body 1 contacts the pull tab 4 and the pull tab 5, thereby reducing the wear between the pull tab 4 and the pull tab 5, and further extending the service life of the pull tab 4 and the pull tab 5 respectively, and further extending the service life of the zipper. Among them, the integral process of the ring body 1 can be obtained by stamping, which has the characteristics of high efficiency and low cost. If necessary, it can also be obtained by injection molding.

Claims

1. A connecting ring for a zipper, characterized in that: It comprises a ring body made by an integrated process, which is a flat structure, a through hole is opened in the middle of the ring body, and the opening edges at both ends of the through hole are provided with rounded corners or chamfered corners; the cross-section of the through hole is in the shape of a triangle, and the positions at the three corners of the through hole are rounded corners or chamfered corners.

2. The connecting ring for a zipper according to claim 1, characterized in that: The shape of the ring body matches the shape of the through hole, and the inner and outer edges of the ring body are chamfered or beveled.

3. The connecting ring for a zipper according to claim 1 or 2, characterized in that: If a chamfer is used, the range of the chamfer angle is 2 to 88 degrees, and the length of the chamfered surface is 0.05 to 0.4 mm; if a rounded corner is used, the range of the rounded corner is 0.05 mm ≤ R ≤ 0.4 mm.

4. A zipper, characterized in that: The invention comprises a slider body and a pull tab, wherein the slider body is provided with a pull tab on the upper part, and the pull tab is sleeved with the connecting ring according to any one of claims 1 to 3, and the end of the pull tab is provided with a mounting hole, and the mounting hole is sleeved on the connecting ring; the end of the pull tab is provided with a left semicircle and a right semicircle matching the left semicircle, and the mounting hole on the pull tab is formed by splicing the left semicircle and the right semicircle.

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