Curved zipper
By designing curved inner and outer zipper straps and curved zippers, the technical problem of curved seams in existing zippers has been solved, realizing the technical application of curved seams and adapting to the bending needs of various curvatures.
Patent Information
- Application Number
- CN202422793655.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-11-15
AI Technical Summary
When existing zippers are bent and sewn to a circular opening, the zipper strap is prone to wrinkles or stretching, resulting in poor sewing.
Design a curved zipper, including an inner zipper strip and an outer zipper strip, with both the zipper teeth and the zipper pull being curved. The zipper strip can be bent with a single curvature or multiple curvatures. The zipper pull bends in the same direction as the zipper strip. The top is provided with a hole structure to adapt to various curvature bending applications and to meet various curvature bending requirements.
It achieves a smooth zipper stitch at the round opening, avoiding wrinkles or stretching of the zipper strap, and is suitable for round handbags and other items.
Smart Images
Figure CN223759321U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of zipper technology, and in particular to a curved zipper. Background Technology
[0002] Please see Figure 1 Existing zippers include a zipper belt and two interlocking teeth fixed to the zipper belt. The existing zipper teeth are all the same size, and the zipper belt is also the same size. They are all straight chains, and when the zipper teeth are engaged, the center of engagement is a straight line.
[0003] When sewing zippers onto clothing, bags, or other items, the normal procedure is to sew the zipper straight onto the item. However, when applying zippers to round openings, such as round handbags, the zipper needs to be bent before sewing. But bending an existing zipper causes wrinkles to form on one side of the zipper strap, while the other side stretches, making it difficult to sew the zipper properly. Utility Model Content
[0004] Therefore, the purpose of this utility model is to provide a curved zipper.
[0005] A curved zipper includes an inner zipper tape and an outer zipper tape; the inner zipper tape has an inner zipper tooth fixed on the side near the outer zipper tape, and the outer zipper tape has an outer zipper tooth fixed on the side near the inner zipper tape; in the closed state, the inner zipper tape and the outer zipper tape are engaged; the inner zipper tape and the outer zipper tape are bent in the same direction, and the outer zipper tape is located on the convex side of the bend.
[0006] The present invention describes a zipper for circular openings, which, by setting a curved zipper strap, is suitable for circular openings, such as the opening of a circular handbag or the opening of a circular garment.
[0007] Furthermore, it also includes a zipper pull, which is disposed between the inner zipper tape and the outer zipper tape and is used to control the opening and closing of the inner zipper tape and the outer zipper tape; the zipper pull is curved and its bending direction is the same as that of the inner zipper tape and the outer zipper tape.
[0008] Furthermore, it also includes a zipper pull, the outer edge of the front end of which is an arc edge; cylindrical closing posts are provided on both sides of the rear end of the zipper pull, the diameter of which is slightly larger than the spacing between the chain teeth.
[0009] Furthermore, the front end of the zipper pull is provided with an outwardly extending top post, and the ends of the inner zipper strip and the outer zipper strip are provided with perforated rings that fit with the top post.
[0010] Furthermore, it also includes a socket and a socket pin, wherein the socket pin is respectively disposed at both ends of the inner zipper strip and the outer zipper strip, and the socket is disposed at one end of one of the socket pins; both the socket and the socket pin are curved, and their bending direction is the same as that of the inner zipper strip and the outer zipper strip.
[0011] Furthermore, the inner and outer chain teeth are resin plastic chain teeth; the inner chain tooth includes a first chain tooth seat fixed to the inner zipper tape, a first chain tooth neck connected at one end to the first chain tooth seat away from the inner zipper tape, and a first chain tooth head connected at one end to the first chain tooth neck away from the first chain tooth seat; the outer chain tooth includes a second chain tooth seat fixed to the outer zipper tape, a second chain tooth neck connected at one end to the second chain tooth seat away from the outer zipper tape, and a second chain tooth head connected at one end to the second chain tooth neck away from the second chain tooth seat; the first chain tooth neck forms a neck shape that narrows in the middle between the first chain tooth seat and the first chain tooth head.
[0012] Furthermore, the inner and outer chain teeth are metal chain teeth; the inner chain tooth includes a first chain tooth seat fixed to the inner zipper tape and a first chain tooth head connected at one end to the first chain tooth seat away from the inner zipper tape; the outer chain tooth includes a second chain tooth seat fixed to the outer zipper tape and a second chain tooth head connected at one end to the second chain tooth seat away from the outer zipper tape; the first chain tooth head and the second chain tooth head are respectively provided with a protrusion on one side and a recess on the other side.
[0013] Furthermore, the inner zipper tape and the outer zipper tape can be bent with a single curvature, multiple curvatures, or in the opposite direction.
[0014] This utility model also provides a zipper locking structure, including a zipper, a top post disposed at the front end of the zipper, two zipper strips on both sides, and a perforated ring disposed at the end of the zipper strip. The perforated ring is a multi-hole perforated ring extending between the zipper strips. The top post is used to insert into the perforated ring.
[0015] Furthermore, the zipper tape is provided with multiple perforated rings, each perforated ring extending a different distance from the zipper tape, so that the perforated rings form an arc shape; the top post is a curved top post that cooperates with the arc-shaped perforated rings.
[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a zipper using existing technology.
[0018] Figure 2 This is a schematic diagram of the curved zipper according to Embodiment 1 of this utility model;
[0019] Figure 3 This is a schematic diagram of the curved zipper pull of Embodiment 1 of this utility model;
[0020] Figure 4 This is a schematic diagram of the zipper pull with a top post and the zipper ring with holes in Embodiment 1 of this utility model.
[0021] Figure 5 This is a schematic diagram of the fit between the curved top post and the arc-shaped hole ring in Embodiment 1 of this utility model;
[0022] Figure 6 This is a schematic diagram of a curved zipper with plastic resin chain teeth according to Embodiment 1 of this utility model;
[0023] Figure 7 This is a schematic diagram of the structure of the zipper puller with an arc-shaped front end in Embodiment 1 of this utility model.
[0024] Figure 8 This is a schematic diagram of a single-curvature metal chain tooth curved zipper according to Embodiment 2 of this utility model;
[0025] Figure 9 This is a schematic diagram of a multi-curvature metal chain tooth curved zipper according to Embodiment 2 of this utility model.
[0026] In the attached diagram, the markings are: 10, inner zipper tape; 11, perforated ring;
[0027] 20. External zipper strap;
[0028] 30. Inner chain tooth; 31. First chain tooth seat; 32. First chain tooth neck; 33. First chain tooth head;
[0029] 40. Outer chain tooth; 41. Second chain tooth seat; 42. Second chain tooth neck; 43. Second chain tooth head;
[0030] 50. Pull head; 51. Top tongue; 52. Pull head tightening edge; 53. Top post; 54. Closing post.
[0031] 60. Socket; 61. First pin; 62. Second pin. Detailed Implementation
[0032] Example 1
[0033] Please see Figure 2The curved zipper bends to one side and includes an inner zipper tape 10, an outer zipper tape 20, a plurality of inner zipper teeth 30 fixed to the inner zipper tape 10 near the outer zipper tape 20, a plurality of outer zipper teeth 40 fixed to the outer zipper tape 20 near the inner zipper tape 10, and a zipper pull 50. In the closed state, the inner zipper teeth 30 and the outer zipper teeth 40 engage with each other; the inner zipper tape 10 and the outer zipper tape 20 can interlock through the engagement of the inner zipper teeth 30 and the outer zipper teeth 40; in the closed state, the engagement is tight and without gaps. The sides of the inner zipper tape 10 and the outer zipper tape 20 without zipper teeth are sewn to other items with circular openings, such as the opening of a circular handbag. When the inner zipper tooth 30 and the outer zipper tooth 40 engage, the engagement centerline is a C-shaped curve; the zipper head 50 is disposed between the inner zipper tape 10 and the outer zipper tape 20, and is used to control the opening and closing of the inner zipper tooth 30 and the outer zipper tooth 40. In this embodiment, the inner zipper tape 10 and the outer zipper tape 20 are fabric tapes.
[0034] Preferably, the curved zipper has a consistent curvature and a fixed continuous curvature.
[0035] The inner chain teeth 30 and the outer chain teeth 40 are spaced apart along the curved zipper tape. The outer chain teeth 40 are radially arranged along the outer zipper tape 20, and the inner chain teeth 30 are radially arranged along the inner zipper tape 10. Further, the inner chain tooth 30 includes a first chain tooth seat 31 fixed to the inner zipper tape 10, a first chain tooth neck 32 connected at one end to the first chain tooth seat 31 away from the inner zipper tape 10, and a first chain tooth head 33 connected at one end to the first chain tooth neck 32 away from the first chain tooth seat 31; the outer chain tooth 40 includes a second chain tooth seat 41 fixed to the outer zipper tape 20, a second chain tooth neck 42 connected at one end to the second chain tooth seat 41 away from the outer zipper tape 20, and a second chain tooth head 43 connected at one end to the second chain tooth neck 42 away from the second chain tooth seat 41; the first The chain tooth neck 32 forms a neck shape that narrows in the middle between the first chain tooth seat 31 and the first chain tooth head 33, and a recess is formed between two adjacent first chain tooth necks 32; the second chain tooth neck 42 forms a neck shape that narrows in the middle between the second chain tooth seat 41 and the second chain tooth head 43, and a recess is formed between two adjacent second chain tooth necks 32; in the engaged state, the first chain tooth head 33 is placed in the recess between two adjacent second chain tooth necks 42 of the inner chain tooth 30, and the second chain tooth head 43 is placed in the recess between two adjacent second chain tooth necks 42 of the outer chain tooth 40, with staggered interlocking.
[0036] Furthermore, the outer diameter of the first chain tooth neck 32 gradually increases towards the outer chain tooth 40, while the inner diameter of the second chain tooth neck 42 gradually decreases towards the inner chain tooth 30, thus achieving a tight meshing between the inner chain tooth 30 and the outer chain tooth 40 under the bending design.
[0037] Please see Figure 3 The zipper pull 50 includes a zipper pull body, a top tongue 51 disposed at the front end of the zipper pull body, and zipper pull tightening edges 52 on both sides of the zipper pull. The zipper pull body is used to engage the first zipper tooth head 33 and the second zipper tooth head 43. Both the zipper pull body and the top tongue 51 are curved, and their curvature direction is the same as that of the inner zipper tape 10 and the outer zipper tape 20. The zipper pull tightening edges 52 gradually tighten from the front end to the rear end towards the middle of the zipper pull. The zipper pull tightening edges 52 contact the zipper tooth seats on both sides of the zipper teeth, and are used to tighten the zipper teeth on both sides inserted into the zipper pull 50, so that the zipper teeth on both sides interlock. The zipper pull 50 should be designed to be as short as possible to be suitable for zippers with a larger curvature range. If the zipper pull 50 is longer, it will be more limited by the curvature of the zipper pull 50 itself.
[0038] For further details, please refer to Figure 4 The zipper pull 50 has an outwardly extending top post 53 at its front end. At least two perforated rings 11 that engage with the top post 53 are provided at the ends of the inner zipper strap 10 and the outer zipper strap 20. The top post 53 can be inserted into the perforated rings 11. When the zipper pull 50 is pulled to close the two zipper straps, the top post 53 simultaneously enters the perforated rings 11 of both zipper straps, causing the ends of the two zipper straps to be contracted and fixed by the zipper pull 50, making them less likely to separate. Preferably, the perforated rings 11 are multi-hole rings extending between the zipper straps. By adjusting the holes through which the top post 53 passes, the tightness of the two zipper straps can be adjusted. When the top post 53 passes through the outer holes of the perforated rings 11 of the two zipper straps, the two zipper straps are looser; when the top post 53 passes through the inner holes of the perforated rings 11 of the two zipper straps, the two zipper straps are tighter.
[0039] For preferred options, please refer to [link / reference]. Figure 5 The distances from which each perforated ring 11 extends out of the chain are different. By controlling the distance from which each perforated ring 11 extends out of the chain, the perforated rings 11 are arranged in an arc shape to match the curvature of the curved zipper. Correspondingly, the top post 53 of the zipper head 50 is set as a curved top post 53 that matches the curvature of the zipper, so as to better adapt to the curved zipper.
[0040] The curved zipper also includes a socket 60, a lower stop socket pin, and an upper stop socket pin (not shown). The lower stop socket pin and the upper stop socket pin are respectively located at both ends of the curved zipper. The socket 60 is located at one end of the lower stop socket pin 61. The lower stop socket pin includes a first pin 61 and a second pin 62 respectively located on the inner zipper tape 10 and the outer zipper pocket 20. The first pin 61 is pressed into the socket 60, while the second pin 62 is designed separately from the socket 60. When the second pin 62 is inserted into the socket and the zipper pull is pulled, the inner zipper tape 10 and the outer zipper tape 20 are engaged. The socket 60 and the socket pin prevent the engaged zipper teeth from opening on their own and prevent the zipper pull 50 from falling out. Both the socket 60 and the socket pin are curved, and their bending direction is the same as that of the inner zipper tape 10 and the outer zipper tape 20.
[0041] Please see Figure 6 This diagram illustrates a curved zipper with plastic resin teeth. The tooth head is arc-shaped, and the tooth neck has a gradually narrowing outer diameter. When the tooth head and tooth neck mate, the arc-shaped head can fit into the recess of the tooth neck along its gradually narrowing shape, better matching the bending angle. This achieves a tight engagement between the inner tooth 30 and the outer tooth 40 while satisfying the bending design. Under single-curvature bending, both the inner and outer teeth are the same size, and they engage with each other according to the proportional expansion and contraction of the curvature. Furthermore, the curved zipper with plastic resin teeth can also be bent in multiple curvatures in the same direction or in opposite directions.
[0042] Further, please refer to Figure 7 To accommodate zippers with multiple curvatures bending in the same or opposite directions, the outer edge of the front end of the zipper pull 50 is designed as an arc edge. The swinging motion of the front end of the zipper pull 50 ensures that the arc edge remains in contact with the curved zipper strip, adapting to various curvature conditions and thus making it suitable for zippers with multiple curvatures. A cylindrical closing post 54 is provided at the rear end of the zipper pull 50, allowing the zipper teeth on both sides to tighten and engage while maintaining the desired bending angle. The diameter of the closing post 54 is slightly larger than the distance between the zipper teeth. This larger diameter prevents the zipper teeth from getting stuck while maximizing the turning radius of the zipper pull 50. The top tongue 51 is located at the front end of the zipper pull 50, and the closing post 54 is located at the rear end, keeping the top tongue 51 and the closing post 54 far apart to allow for a larger turning radius of the zipper pull 50.
[0043] Example 2
[0044] Please see Figure 8-9This embodiment is basically the same as Embodiment 1, except that: the chain teeth are metal chain teeth; the inner chain tooth 30 includes a first chain tooth seat 31 fixed to the inner zipper tape 10 and a first chain tooth head 33 connected at one end to the first chain tooth seat 31 away from the inner zipper tape 10; the outer chain tooth 40 includes a second chain tooth seat 41 fixed to the outer zipper tape 20 and a second chain tooth head 43 connected at one end to the second chain tooth seat 41 away from the outer zipper tape 20. The first chain tooth head 33 and the second chain tooth head 43 each have a protrusion on one side and a recess on the other side. In the closed state, the protrusion of the first chain tooth head 33 inserts into the recess of the second chain tooth head 43, and the protrusion of the second chain tooth head 43 inserts into the recess of the first chain tooth head 33. The protrusions of the first chain tooth head 33 and the second chain tooth head 43 face the same direction.
[0045] When bending at a single curvature, the first chain tooth 33 and the second chain tooth 43 are the same size to prevent situations where the size of the protrusion between the first chain tooth 33 and the recess between the second chain tooth 43 is inconsistent, which could lead to a failure to lock. The second chain tooth seat 41 is wider than the first chain tooth seat 31, reducing the spacing between the outer chain tooth seats to ensure that the spacing between the outer chain teeth is less than the diameter of the left and right edges of the zipper pull 50, preventing the zipper pull 50 from getting stuck. Specifically, the width of the second chain tooth seat 41 gradually increases in the direction away from the inner chain tooth 30.
[0046] The curved zipper with metal teeth can also be bent at multiple curvatures or in reverse. In the case of multiple curvatures and reverse bending, the center of curvature of the reverse bend is on the same straight line as the center of curvature of the original bend, so that the teeth on both sides of the different curves can fit together perfectly. The curved zipper can contain teeth with various curvature shapes interlocking and continuously connected, and the curvature of the continuously meshing teeth changes continuously and gradually, forming a curved zipper. In the case of multiple curvatures or reverse bending, the size of the protrusions and recesses of all teeth is the same. In the case of multiple curvatures or reverse bending, the width of the teeth on the side closer to the curvature center gradually increases towards the other side, while the width of the teeth on the side farther from the curvature center gradually decreases towards the other side, so that the large end of the teeth on the side closer to the curvature center connects with the small end of the teeth on the side farther from the curvature center, which facilitates the bending design, makes the teeth on both sides mesh tightly, and at the same time reduces the spacing of the teeth on the side farther from the curvature center, preventing the zipper pull 50 from getting stuck.
[0047] When the curved zipper is sewn onto an item with a circular opening, the bending directions of the inner zipper tape 10 and the outer zipper tape 20 match the circular opening, and the zipper tape will not wrinkle or be stretched.
[0048] The curved zipper described in this invention, with its unidirectionally curved zipper strip, is suitable for circular openings, such as the opening of a circular handbag or the opening of a circular garment. The overall zipper teeth are arranged in a curved pattern, with the center of curvature of the entire bend located at or approximately at a single point. Simultaneously, the zipper strip can be bent at multiple curvatures or in opposite directions to accommodate a wider variety of curved openings.
[0049] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.
Claims
1. A curvilinear zipper comprising: The utility model provides a zipper, which comprises an inner zipper tape, an outer zipper tape, inner teeth fixed to one side of the inner zipper tape close to the outer zipper tape, outer teeth fixed to one side of the outer zipper tape close to the inner zipper tape, the inner zipper tape and the outer zipper tape being engaged in a closed state, the inner zipper tape and the outer zipper tape being curved in the same direction, the outer zipper tape being located on the convex side of the curve, a puller arranged between the inner zipper tape and the outer zipper tape for controlling the opening and closing of the inner zipper tape and the outer zipper tape, the puller being curved and having the same curvature direction as the inner zipper tape and the outer zipper tape, a top post extending outward arranged at the front end of the puller, and a hole ring arranged on the end of the inner zipper tape and the outer zipper tape and engaging with the top post.
2. The curved zipper of claim 1, wherein: The outer side of the front end of the puller is a circular arc, and cylindrical closing posts are arranged at the two sides of the rear end of the puller, the diameter of the closing posts being slightly larger than the distance between the teeth.
3. The curved zipper of claim 1, wherein: The utility model also provides a socket and a socket pin, the socket pin being arranged at the two ends of the inner zipper tape and the outer zipper tape respectively, the socket being arranged at one end of one of the socket pins, the socket and the socket pin both being curved and having the same curvature direction as the inner zipper tape and the outer zipper tape.
4. The curved zipper of claim 1, wherein: The inner teeth and the outer teeth are resin plastic teeth, the inner teeth comprising a first tooth base fixed to the inner zipper tape, a first tooth neck connected to one end of the first tooth base away from the inner zipper tape, and a first tooth head connected to one end of the first tooth neck away from the first tooth base. The outer teeth comprising a second tooth base fixed to the outer zipper tape, a second tooth neck connected to one end of the second tooth base away from the outer zipper tape, and a second tooth head connected to one end of the second tooth neck away from the second tooth base. The first tooth neck is narrowed in the middle between the first tooth base and the first tooth head.
5. The curved zipper of claim 1, wherein: The inner teeth and the outer teeth are metal teeth, the inner teeth comprising a first tooth base fixed to the inner zipper tape, a first tooth head connected to one end of the first tooth base away from the inner zipper tape, the outer teeth comprising a second tooth base fixed to the outer zipper tape, and a second tooth head connected to one end of the second tooth base away from the outer zipper tape, the first tooth head and the second tooth head each having a protrusion on one side and a recess on the other side.
6. The curved zipper according to any one of claims 1-5, wherein: The inner zipper tape and the outer zipper tape can be curved in single curvature, multiple curvatures or reverse directions, and the width of the tooth base on the side away from the curvature center is greater than the width of the tooth base on the side close to the curvature center.