zipper
By making the fabric structure of the curved part of the zipper tape consistent, forming an arc-shaped close joint, the problems of insufficient design and stability of the curved part of the zipper tape are solved, improving both aesthetics and functionality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YKK CORP
- Filing Date
- 2025-06-19
- Publication Date
- 2026-07-24
AI Technical Summary
Existing reverse-mounted and concealed zippers have shortcomings in terms of the design and shape stability of the zipper tape's curved section, especially under external force, they are prone to skewing, affecting aesthetics and functionality.
By making the fabric structure of the curved sections of the first and second zipper tapes the same, and forming an arc-shaped close joint at the curved sections, the consistency and stability of the fabric structure at the curved sections are ensured. The same twill or herringbone weave is used to improve the design and shape stability of the curved sections.
It improves the aesthetics and shape stability of the curved section, reduces skewing, enhances waterproofing and sliding properties, while maintaining good appearance and functionality.
Smart Images
Figure CN224539600U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a zipper. Background Technology
[0002] As for the types of zippers, there are known general-type zippers in which the zipper teeth are installed in a way that can be seen on the outside (front) side of the product, reverse-mounted zippers in which the zipper teeth are installed on the inside (back) side of the product and are difficult to see, and concealed zippers in which the side edges of the left and right zipper tapes are folded back into a U-shape along their width direction and the zipper teeth are installed on the folded tape portion, etc.
[0003] Reverse or concealed zippers, taking advantage of their discreet nature without compromising product design, are preferred for various clothing, shoes, bags, and furniture products. In recent years, they have also been used for seat covers in automobiles, trains, and airplanes.
[0004] Patent document 1 discloses a zipper in which the teeth of a pair of zipper strips are made to mesh with each other by making the arc-shaped bends formed at one end of the pair of zipper strips in the width direction close together, thereby further improving the concealment of the teeth.
[0005] The zipper described in Patent Document 1 is intended to provide a zipper in which the teeth are not visually discernible even when an external force is applied to the left and right zipper tapes in a direction that causes them to move away from each other. However, the apex of the curved portion formed at one end of the width direction of the zipper tape is prone to skew along the length direction of the zipper tape, thus providing room for improvement in terms of design and stability of the curved shape.
[0006] Existing technical documents
[0007] Patent documents
[0008] Patent Document 1: WO2023 / 243081 Utility Model Content
[0009] This invention was made in view of the above-mentioned problems, and its purpose is to provide a zipper in which the design and shape stability of the curved portions are excellent in a zipper in which the curved portions of a pair of zipper tapes are respectively curved at one end in the width direction and are closely connected to each other.
[0010] The above-mentioned objective of this utility model is achieved through the following structure.
[0011] (1) A zipper comprising:
[0012] The first zipper belt 3 and the second zipper belt 5 include: a first zipper belt 10 and a second zipper belt 20, which are elongated and have back surfaces 11, 21 and surfaces 13, 23; and a first zipper tooth row 50 and a second zipper tooth row 60, which are disposed on the back surfaces 11, 21 of one end 10a, 20a of the first zipper belt 10 and the second zipper belt 20 in the width direction; and
[0013] The zipper pull 40 is slidably disposed on the first chain tooth row 50 and the second chain tooth row 60 extending in the front-rear direction. It slides forward to engage the first chain tooth row 50 and the second chain tooth row 60, and slides backward to disengage the first chain tooth row 50 and the second chain tooth row 60.
[0014] When the first zipper tooth row 50 and the second zipper tooth row 60 are engaged with each other, curved portions 10c and 20c are formed at one end 10a in the width direction of the first zipper tape 10 and one end 20a in the width direction of the second zipper tape 20, which are closely connected in an arc-shaped curved state.
[0015] The fabric structure of at least the curved portions 10c and 20c in the first zipper tape 10 and the second zipper tape 20 is the same.
[0016] Utility Model Effect
[0017] According to this invention, by making the fabric structure of the curved portion of the zipper tape the same, the curved portion is less likely to become skewed and is easier to form straight along the zipper tape. Therefore, the aesthetics, design and bending shape stability of the zipper with the curved portion are improved. Attached Figure Description
[0018] Figure 1 This is a surface view showing the zipper using a zipper pull that relates to this utility model.
[0019] Figure 2 yes Figure 1 The AA cross-sectional view of the zipper shown is a diagram illustrating the engagement of the first and second chain teeth.
[0020] Figure 3 This is a model diagram showing the fabric structure of the second zipper tape.
[0021] Figure 4 This is a photo showing an example of a zipper tape.
[0022] Explanation of reference numerals in the attached figures
[0023] 1 zipper
[0024] 3 zipper teeth and chain straps
[0025] 5 zipper teeth
[0026] 10 First zipper belt
[0027] 10a One end in the width direction
[0028] 10b width direction one end face
[0029] 10c bend
[0030] 10c1 bent base end
[0031] 10c2 curved tip
[0032] 10d base end
[0033] 11 Back
[0034] 13 surfaces
[0035] 20 Second zipper belt
[0036] 20a One end in the width direction
[0037] 20b width direction one end face
[0038] 20c bend
[0039] 20c1 bent base end
[0040] 20c2 curved tip
[0041] 20d base end
[0042] 21 Back
[0043] 23 surface
[0044] 31 chain teeth
[0045] 31a Engaging Head
[0046] 31b First foot
[0047] 31c Second Foot
[0048] 31d connecting part
[0049] 32-core rope
[0050] 33 stitches
[0051] 40 zipper head
[0052] 42 Pull-out Film Mounting Section
[0053] 43 Film Pull
[0054] 50 First chain teeth
[0055] 60 Second chain teeth
[0056] 100 leading cadres Detailed Implementation
[0057] The following description, based on the accompanying drawings, details the various embodiments of the present invention involving zipper pulls.
[0058] Furthermore, in this instruction manual, for the zipper pull, "front-back direction" refers to the sliding direction of the zipper pull, which is the length direction of the zipper. In particular, the direction in which the zipper pull slides to engage the left and right chain teeth is defined as "front," and the direction in which the zipper pull slides to separate the left and right chain teeth is defined as "rear."
[0059] In addition, "left and right direction" refers to the direction in which a pair of chain teeth are aligned, which is orthogonal to the sliding direction of the zipper pull, and can also be referred to as the width direction of the zipper.
[0060] Furthermore, the "vertical direction" is a direction orthogonal to the front-back and left-right directions, and can be referred to in other words as the thickness direction of the zipper pull or zipper tape, or the height direction of the zipper teeth. The "vertical direction" can also be referred to in other words as the "back of the watch".
[0061] (Structure of zipper 1)
[0062] Figure 1 This is a surface view of a zipper using the zipper pull involved in this utility model. Figure 2 yes Figure 1 The AA cross-sectional view of the zipper shown is a diagram illustrating the engagement of the first and second chain teeth.
[0063] like Figure 1 and Figure 2 As shown, the zipper 1 includes: a pair of left and right zipper teeth 3, 5; and a zipper pull 40, which opens and closes the pair of left and right zipper teeth 3, 5.
[0064] The left and right zipper chain straps 3 and 5 include: a left and right pair of first zipper straps 10 and second zipper straps 20, which are elongated and have back sides 11 and 21 and front sides 13 and 23 respectively; a first chain tooth row 50, which is disposed on the back side 11 of one end 10a of the first zipper strap 10 in the width direction; and a second chain tooth row 60, which is disposed on the back side 21 of one end 20a of the second zipper strap 20 in the width direction.
[0065] The first zipper tape 10 and the second zipper tape 20 are woven or braided fabrics made of polyester yarn or the like, exhibiting excellent softness. Alternatively, the first zipper tape 10 and the second zipper tape 20 can also be nonwoven fabrics. The fabric structure of the woven fabrics constituting the first zipper tape 10 and the second zipper tape 20 will be described later.
[0066] The slider 40 engages and disengages a pair of first chain teeth 50 and second chain teeth 60. The slider 40 includes: a slider main body 100; a slider mounting part 42 disposed on the surface of the slider main body 100; and a slider 43 mounted on the slider mounting part 42.
[0067] By moving the pull head 40 forward (upper part of the diagram), as... Figure 2 As shown, the left and right pairs of first chain teeth 50 and second chain teeth 60 engage. On the other hand, by moving the zipper head 40 rearward (below the figure), the left and right pairs of first chain teeth 50 and second chain teeth 60 disengage. Furthermore, the zipper 1 may also have an upper stop or a lower stop (not shown). Alternatively, an opening member with a seat bar and a socket body may be provided instead of a lower stop.
[0068] The first zipper tooth row 50 and the second zipper tooth row 60 are spiral zipper tooth rows formed by winding synthetic resin monofilaments in a certain direction, and have multiple teeth 31.
[0069] In the first chain tooth row 50 and the second chain tooth row 60, the core cord 32 is inserted inside the plurality of chain teeth 31 and is sewn by double-locked thread 33 to the back 11 of the width direction end 10a of the first zipper tape 10 and the back 21 of the width direction end 20a of the second zipper tape 20. Furthermore, synthetic resin materials used as monofilaments include, for example, polyester and nylon.
[0070] The chain tooth 31 includes: a first foot 31b, which extends from the front end of the engagement head 31a that engages and disengages with the opposite chain tooth 31 to the other end in the width direction, and contacts the first zipper tape 10 and the second zipper tape 20; a second foot 31c, which extends from the back end of the engagement head 31a to the other end in the width direction, and does not contact the first zipper tape 10 and the second zipper tape 20; and a connecting portion 31d, which connects the outer end in the width direction of the first foot 31b and the other end in the width direction of the second foot 31c of the adjacent chain tooth 31.
[0071] Therefore, the first foot 31b and the second foot 31c are formed in such a way that they protrude from the engaging head 31a and extend parallel to each other.
[0072] Figure 2 The image shows the engagement center O of the first chain tooth row 50 and the second chain tooth row 60. This engagement center O is the center position when the chain teeth 31, 31 are engaged with each other, and it coincides with the center of the width direction of the zipper 1.
[0073] With the first zipper tooth row 50 and the second zipper tooth row 60 separated, one end face 10b of the first zipper tape 10 in the width direction extends towards the second zipper tape 20 (one end face in the width direction) relative to the position of the engagement center O of the first zipper tooth row 50 and the second zipper tooth row 60. Similarly, one end face 20b of the second zipper tape 20 in the width direction extends towards the first zipper tape 10 (one end face in the width direction) relative to the position of the engagement center O.
[0074] That is, such as Figure 2 As shown, the design is such that when the first chain tooth row 50 and the second chain tooth row 60 are engaged, the first zipper strip 10 and the second zipper strip 20 overlap with the engagement center O.
[0075] Therefore, as Figure 1 As shown in the upper part, with the first zipper tape 10 and the second zipper tape 20 (first zipper tooth row 50 and second zipper tooth row 60) separated, the zipper head 40 is moved forward (upper part of the figure), thereby... Figure 2 As shown, the first zipper tooth row 50 and the second zipper tooth row 60 engage. At this time, the width direction end 10a of the first zipper tape 10 and the width direction end 20a of the second zipper tape 20 are pressed against each other in the width direction and deformed, forming a protruding arc-shaped longitudinal bend on the surface and closely contacting each other.
[0076] Therefore, as Figure 2 As shown, at one end 10a and 20a of the first zipper tape 10 and the second zipper tape 20 in the width direction, curved portions 10c and 20c are formed by bending in an arc shape toward surfaces 13 and 23.
[0077] The curved portions 10c and 20c include: curved base portions 10c1 and 20c1, which are the sewn portions of the sewing chain teeth 31; curved top portions 10c2 and 20c2, which are located on the inner (top) side in the width direction of the curved base portions 10c1 and 20c1; and curved apex portions 10c3 and 20c3, which are formed at the boundary between the curved base portions 10c1 and 20c1 and the curved top portions 10c2 and 20c2.
[0078] According to this structure, when the first zipper teeth 50 and the second zipper teeth 60 are engaged, the curved tips 10c2 and 20c2 of the first zipper tape 10 and the second zipper tape 20 are in close contact with each other. Therefore, as with conventional reverse-mounted zippers, no gap (so-called separator) is formed between the first zipper tape 10 and the second zipper tape 20. Thus, when the user observes the zipper 1 from the outside, the first zipper teeth 50 and the second zipper teeth 60 are not visually distinguishable, resulting in an excellent appearance. Such a zipper 1 is particularly suitable for aesthetically pleasing items such as car seats, bags, and furniture.
[0079] Furthermore, the first zipper tape 10 and the second zipper tape 20 are pressed together by their curved portions 10c and 20c, which are longitudinally curved in an arc shape. Therefore, even when a force (so-called lateral tension) is applied to the first zipper tape 10 and the second zipper tape 20 in a direction that would separate them (i.e., a force that would separate them), the longitudinal curvature is slightly reduced within the range where the meshing gap between the zipper teeth 31 and 31 is eliminated, and the close contact between them can still be maintained. Therefore, even when a lateral tension is applied to the zipper 1, a good appearance of the zipper 1 can be maintained.
[0080] Furthermore, the first zipper tape 10 and the second zipper tape 20 are waterproofed, thereby effectively preventing moisture from seeping from the surface of the zipper 1 to the back side when the first chain teeth 50 and the second chain teeth 60 are engaged, thus providing excellent waterproof performance.
[0081] Furthermore, by forming curved portions 10c and 20c at one end 10a and 20a in the width direction of the first zipper tape 10 and the second zipper tape 20, such as... Figure 2 As shown, when the first chain tooth row 50 and the second chain tooth row 60 are engaged with each other, the back surfaces 11 and 21 of the width direction end face 10b and the width direction end face 20b of the first zipper tape 10 and the second zipper tape 20 are far apart from the first chain tooth row 50 and the second chain tooth row 60 (chain tooth 31) in the front and back directions, respectively forming a first space T1 and a second space T2 between them.
[0082] By setting the first space T1 and the second space T2, when the first zipper tooth row 50 and the second zipper tooth row 60 are combined using the zipper head 40, the first zipper tape 10 and the second zipper tape 20 can be easily bent longitudinally. Furthermore, the larger the first space T1 and the second space T2, the larger the contact area between the surfaces 13 and 23 of the width-direction end 10a and the width-direction end 20a of the first zipper tape 10 and the second zipper tape 20, which can suppress the formation of gaps between the first zipper tape 10 and the second zipper tape 20. This results in a better appearance and improved water resistance.
[0083] According to the zipper 1 described above, when the zipper head 40 is moved forward to engage the first zipper tooth row 50 and the second zipper tooth row 60, the ends 10a and 20a of the first zipper strip 10 and the second zipper strip 20, which are longer than normally formed, get stuck inside the zipper head main body 100, resulting in increased sliding resistance.
[0084] In addition, when the slider 40 is moved backward and the first chain tooth 50 and the second chain tooth 60 are moved away from each other, the sliding resistance of the slider 40 also increases.
[0085] (The fabric structure of the first zipper tape 10 and the second zipper tape 20)
[0086] based on Figure 3 and Figure 4 The fabric structure of the first zipper tape 10 and the second zipper tape 20 will be described. Figure 3 This is a model diagram showing the fabric structure of the second zipper tape. Figure 4 This is a photo showing an example of a zipper tape.
[0087] The first zipper tape 10 and the second zipper tape 20 include: curved portions 10c and 20c formed at one end 10a and 20a in the width direction; and tape base ends 10d and 20d extending outward in the width direction compared to the curved portions 10c and 20c. Furthermore, in Figure 3 The second zipper tape 20 is shown, but the first zipper tape 10 is also constructed in the same way.
[0088] like Figure 3 As shown, in the first zipper tape 10 and the second zipper tape 20, which are formed of woven or braided fabric, the curved portions 10c and 20c are formed by the same twill weave section X woven with warp and weft yarns, and the tape base ends 10d and 20d are formed by herringbone weave section Y woven with warp and weft yarns.
[0089] Here, the same twill weave section X refers to a state in which the warp and weft yarns exhibit the same twill lines with the same direction and slope. For the sections forming the bends 10c and 20c, as long as the twill lines are consistent, the direction or slope of the twill lines is not limited.
[0090] That is, in the first zipper tape 10 and the second zipper tape 20, the curved portions 10c and 20c present diagonal lines along a single direction, and the tape base ends 10d and 20d alternately present diagonal lines with and against the grain in the width direction.
[0091] (Functions and Effects)
[0092] According to the above structure, by making the portion forming the curved portion 10c, 20c of the first zipper tape 10 and the second zipper tape 20 formed by the twill weave portion X with the same twill lines, when the curved portion 10c, 20c is formed at one end 10a, 20a in the width direction of the first zipper tape 10 and the second zipper tape 20, a uniform arc-shaped curved portion 10c, 20c can be obtained along the length direction.
[0093] Specifically, when viewed from the front, the curved apex portions 10c3 and 20c3 formed along the length direction of the first zipper tape 10 and the second zipper tape 20 are less likely to be skewed, thus making the curved apex portions 10c3 and 20c3 of the curved portions 10c and 20c more straight.
[0094] That is, the overall aesthetics, design and shape stability of the zipper 1 with curved portions 10c and 20c are improved.
[0095] Furthermore, by forming the base ends 10d and 20d of the first zipper tape 10 and the second zipper tape 20 with a herringbone pattern Y, the diagonal lines of the base ends 10d and 20d become less prominent. Therefore, the overall aesthetics and design of the first zipper tape 10 and the second zipper tape 20 are further improved.
[0096] Fabric structures with bends of 10c and 20c can also increase the number of weft yarns woven in by making the weft yarns finer than the warp yarns.
[0097] According to this structure, not only is the strength of the first zipper tape 10 and the second zipper tape 20 improved, but the unevenness of the curved portions 10c and 20c is also further reduced, thus improving the sliding performance of the zipper head 40 that slides along the first zipper tape 10 and the second zipper tape 20.
[0098] In addition, water-resistant membranes are adhered to the first zipper tape 10 and the second zipper tape 20, which enhance the repulsive force between them when they are bent, thus improving the tightness (water resistance).
[0099] In the above embodiment, the portions forming the curved portions 10c and 20c of the first zipper tape 10 and the second zipper tape 20 are formed by the same twill weave section X. It is not limited to twill weave, as long as the fabric weave of the portions forming the curved portions 10c and 20c is the same and uniform. Specifically, plain weave or satin weave can also be used.
[0100] Furthermore, in the above-described embodiment, the fabric structure of the first zipper tape 10 and the second zipper tape 20 is changed at the curved portions 10c and 20c of the twill weave and the tape base ends 10d and 20d of the herringbone weave. However, the fabric structure can remain the same in the curved portions 10c and 20c, and the structure is not limited to this. That is, the first zipper tape 10 and the second zipper tape 20 can also have the same fabric structure as a whole.
[0101] As stated above, the following matters are disclosed in this specification.
[0102] (1) A zipper comprising:
[0103] The first zipper belt 3 and the second zipper belt 5 include: a first zipper belt 10 and a second zipper belt 20, which are elongated and have back surfaces 11, 21 and surfaces 13, 23; and a first zipper tooth row 50 and a second zipper tooth row 60, which are disposed on the back surfaces 11, 21 of one end 10a, 20a of the first zipper belt 10 and the second zipper belt 20 in the width direction; and
[0104] The zipper pull 40 is slidably disposed on the first chain tooth row 50 and the second chain tooth row 60 extending in the front-rear direction. It slides forward to engage the first chain tooth row 50 and the second chain tooth row 60, and slides backward to disengage the first chain tooth row 50 and the second chain tooth row 60.
[0105] When the first zipper tooth row 50 and the second zipper tooth row 60 are engaged with each other, curved portions 10c and 20c are formed at one end 10a in the width direction of the first zipper tape 10 and one end 20a in the width direction of the second zipper tape 20, which are closely connected in an arc-shaped curved state.
[0106] The fabric structure of at least the curved portions 10c and 20c in the first zipper tape 10 and the second zipper tape 20 is the same.
[0107] According to this structure, by making the fabric structure of the curved portion of the zipper tape the same, the curved portion is less likely to become skewed and can easily form straight along the zipper tape. Therefore, the aesthetics, design and shape stability of the zipper with the curved portion are improved.
[0108] (2) In the zipper described in (1), the fabric structure of the curved portions 10c and 20c is a twill weave.
[0109] According to this structure, it is possible to simultaneously achieve the strength of the portions forming the bends 10c and 20c and the operability when sewing the chain teeth 31.
[0110] (3) In the zipper described in (1) or (2), the curved portions 10c and 20c exhibit a single diagonal line.
[0111] According to this structure, the curved portion formed along the zipper tape is even less prone to skewing, thus further improving the aesthetics, design, and shape stability of the zipper with the curved portion.
[0112] (4) In any of the zippers described in (1) to (3), the warp yarns constituting the first zipper belt 10 and the second zipper belt (20) are finer than the weft yarns.
[0113] According to this structure, the strength of the first zipper tape 10 and the second zipper tape 20 can be improved, and the unevenness of the curved portions 10c and 20c is further reduced, thus improving the sliding performance of the zipper head 40 that slides along the first zipper tape 10 and the second zipper tape 20.
[0114] (5) In any of the zippers described in (1) to (4), the outer side of the curved portions 10c and 20c of the first zipper tape 10 and the second zipper tape 20 in the width direction is herringbone pattern.
[0115] According to this structure, the diagonal lines that appear in the first zipper tape and the second zipper tape become less prominent, thus further improving the aesthetics and design of the zipper with the curved portion.
Claims
1. A zipper, characterized in that, include: A first zipper tooth strip (3) and a second zipper tooth strip (5), comprising: a first zipper strip (10) and a second zipper strip (20), which are elongated and have a back side (11, 21) and a surface (13, 23); and a first tooth row (50) and a second tooth row (60), which are disposed on the back side (11, 21) at one end (10a, 20a) of the first zipper strip (10) and the second zipper strip (20) in the width direction; and The zipper pull (40) is slidably disposed on the first chain tooth row (50) and the second chain tooth row (60) extending in the front-rear direction. It slides forward to engage the first chain tooth row (50) and the second chain tooth row (60), and slides backward to disengage the first chain tooth row (50) and the second chain tooth row (60). When the first zipper tooth row (50) and the second zipper tooth row (60) engage with each other, curved portions (10c, 20c) are formed at one end (10a) in the width direction of the first zipper tape (10) and one end (20a) in the width direction of the second zipper tape (20) that are closely connected to each other in an arc-shaped curved state. The fabric structure of at least the curved portions (10c, 20c) in the first zipper tape (10) and the second zipper tape (20) is the same.
2. The zipper according to claim 1, characterized in that: The fabric weave of the curved portions (10c, 20c) is a twill weave.
3. The zipper according to claim 2, characterized in that: The curved portions (10c, 20c) exhibit a single diagonal line.
4. The zipper according to claim 1, characterized in that: The warp yarns constituting the first zipper tape (10) and the second zipper tape (20) are finer than the weft yarns.
5. The zipper according to any one of claims 1 to 4, characterized in that: The outer side of the curved portions (10c, 20c) of the first zipper tape (10) and the second zipper tape (20) in the width direction has a herringbone pattern.