Slide fastener and top stop used in slide fastener

Abstract

[Problem] To provide a slide fastener in which a slider can be rapidly pulled out while a pair of fastener stringers are closed, and a top stop that is used in the slide fastener. [Solution] In a slide fastener 1, a first top stop 41 is installed so as to be able to approach and separate from a front end part 311 that is furthest forward F in a first wire element, and has a shape that cannot pass through a slider 7, and a second top stop 42 is installed so as to cover a front end part 321 that is furthest forward F in a second wire element 32, and has a shape that can pass through the slider 7.

Description

[Technical Field]

[0001] The present invention relates to a slide fastener that prevents a slider that opens and closes a pair of fastener stringers from coming off under normal circumstances, and to an upper stop used in the slide fastener. [Background technology]

[0002] In recent years, the apparel industry has faced a social problem of fashion waste, which occurs after mass production and mass consumption. As one of its countermeasures, the apparel industry has been working on garment recycling, which involves returning old clothing to its fibrous state and regenerating it. Many garments are equipped with slide fasteners. Slide fasteners include a pair of zipper stringers and a slider. Zipper stringers made of resins such as polyester or nylon can be recycled. However, sliders are often made of materials such as metal, and therefore may not be recyclable along with the resin. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2021 / 260357 [Patent Document 2] Japanese Utility Model Application Publication No. 61-105010 [Patent Document 3] Patent No. 3621014 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventionally, a slide fastener has been disclosed in which the slider can be removed from the fastener stringer (see Patent Document 1). However, the slide fastener described in Patent Document 1 is an open product, and the slider is removed when the pair of fastener stringers are in the open state.

[0005] A slide fastener that allows the slider to be removed when a pair of fastener stringers are in a closed state has also been disclosed (see Patent Document 2). However, the slide fastener described in Patent Document 2 requires that a part of the top stop be removed when removing the slider from the pair of fastener stringers, which is time-consuming.

[0006] The present invention has been made in response to the above-mentioned problems, and aims to provide a slide fastener that allows the slider to be quickly removed while a pair of fastener stringers remain in a closed state, and an upper stop for use with the slide fastener. [Means for solving the problem]

[0007] The slide fastener according to the present invention comprises: a fastener chain including a pair of left and right first and second fastener stringers in which first and second resin line elements are attached to first and second side edges of a pair of left and right first and second fastener tapes, respectively; a slider through which the first and second linear elements pass and which opens and closes the space between the first and second fastener stringers; a bottom stop connecting the first and second fastener stringers at the rear of the first and second fastener stringers; a first top end stop attached to the first fastener tape in front of the first linear element; a second top stop attached to the second fastener tape in front of the second linear element; Equipped with The first top stop is The first linear element is disposed so as to be able to approach and move away from the front end portion of the first linear element and has a shape that does not allow the slider to pass through, The second top stop is The second linear element is disposed so as to encompass the front end portion thereof at the most forward position and has a shape that allows the slider to pass through. It is characterized by: [Effects of the Invention]

[0008] According to the top stop and slide fastener of the present invention, the slider can be quickly removed while the pair of fastener stringers remain in the closed state. [Brief explanation of the drawings]

[0009] [Figure 1] 1 shows the slide fastener 1 of this embodiment as seen from above. [Figure 2] 1 shows the slide fastener 1 of this embodiment as seen from below. [Figure 3] 2 shows an enlarged view of the vicinity of the first top stop 41 in FIG. 1. [Figure 4] 4 shows a cross section taken along line IV-IV in FIG. 3 as viewed from the direction of the arrow. [Figure 5] 1 shows a first top end stop 41 of the slide fastener 1 of this embodiment as seen from above. [Figure 6] 1 shows a first top end stop 41 of the slide fastener 1 of this embodiment as seen from below. [Figure 7] 1 shows a first top end stop 41 of the slide fastener 1 of this embodiment as seen from the right. [Figure 8] 1 shows the second top end stop 42 of the slide fastener 1 of this embodiment as seen from above. [Figure 9] 1 shows a slider 7 of this embodiment. [Figure 10] 1 shows the slide fastener 1 of this embodiment in a closed state as viewed from above. [Figure 11] 1 shows the slide fastener 1 of this embodiment in the closed state as viewed from below. [Figure 12] 1 shows the vicinity of the slider 7 of the slide fastener 1 seen through the upper blade 71a of this embodiment. [Figure 13] In the slide fastener 1 of this embodiment, a first step of removing the slider 7 from the fastener chain 10 is shown. [Figure 14]In the slide fastener 1 of this embodiment, a second step of removing the slider 7 from the fastener chain 10 is shown. [Figure 15] In the slide fastener 1 of this embodiment, a third step of removing the slider 7 from the fastener chain 10 is shown. [Figure 16] 1 shows the fastener chain 10 after the slider 7 has been removed from the slide fastener 1 of this embodiment. MODE FOR CARRYING OUT THE INVENTION

[0010] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0011] Fig. 1 shows the slide fastener 1 of this embodiment as seen from above, and Fig. 2 shows the slide fastener 1 of this embodiment as seen from below.

[0012] The slide fastener 1 of this embodiment includes a fastener chain 10, an upper end stop 4, a lower end stop 5, and a slider 7. The fastener chain 10 has a first fastener stringer 11 and a second fastener stringer 12.

[0013] The first fastener stringer 11 has a first filament element 31 made of resin and a first fastener tape 21 to which the first filament element 31 is attached. The first fastener tape 21 has a first front surface 21a and a first back surface 21b, and the first filament element 31 is attached to the front surface 21a. The second fastener stringer 12 has a second filament element 32 made of resin and a second fastener tape 22 to which the second filament element 32 is attached. The second fastener tape 22 has a second front surface 22a and a second back surface 22b, and the second filament element 32 is attached to the front surface 22a.

[0014] The first top end stop 41 is attached to the front F of the first line element 31. The second top end stop 42 is attached to the front F of the second line element 32. The bottom end stop 5 connects the first fastener tape 21 and the second fastener tape 22 to the rear B of the first line element 31 and the second line element 32.

[0015] In the following description, the direction in which the first and second wire elements 31 and 32 are provided in the longitudinal direction of the fastener chain 10 is referred to as the front-rear direction FB, the top stop 4 side is referred to as the front F, and the bottom stop 5 side is referred to as the rear B. The direction in which the slider 7 is slid to engage the left and right first wire elements 31 and second wire elements 32 may also be referred to as the front F, and the direction in which they separate may also be referred to as the rear B. The left-right direction LR is a direction parallel to the surface of the fastener chain 10 and perpendicular to the front-rear direction. The direction perpendicular to the plane defined by the front-rear direction FB and the left-right direction LR is referred to as the up-down direction UD, and the side of the body 71 of the slider 7 of the fastener chain 10 on which the pull tab 72 is located is referred to as the upper side U, and the opposite side is referred to as the lower side D. In the left-right direction LR, when viewed from above, the left is referred to as the left side L, and the right is referred to as the right side R. The up-down direction UD can also be referred to as the front-back direction, with the upper side U being the front side and the lower side D being the back side.

[0016] The fastener chain 10 is arranged so that the first wire element 31 and the second wire element 32 face each other in the left-right direction LR. The wire element 3 of this embodiment is preferably formed from a coiled monofilament made of a thermoplastic resin such as polyamide or polyester. The first and second wire elements 31, 32 are each formed in a coil shape by repeatedly forming first and second interlocking head portions 31a, 32a, first and second leg portions 31b, 32b, first and second inverted portions 31c, 32c, and first and second leg portions 31b, 32b.

[0017] First and second core cords 21c, 22c formed of twisted multifilament yarn made of thermoplastic resin such as polyamide or polyester are inserted into the first and second coil-shaped filament elements 31, 32, respectively. The coil-shaped filament elements 31, 32 may be fixed by sewing with double chain stitching using synthetic fiber sewing thread to the surfaces of the side edges 21d, 22d of the fastener tape 2. The first and second core cords 21c, 22c may not be used.

[0018] Fig. 3 is an enlarged view of the vicinity of the first top stop 41 in Fig. 1. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 3, seen from the direction of the arrow.

[0019] In this embodiment, a part of the first leg portion 311b at the front end portion 311 of the first linear element 31 is cut off. The remaining first leg portion 311b is positioned and fixed more inward than the first side edge 21d of the first fastener tape 21. The first fastener tape 21 and the first linear element 31 are fixed so that the first leg portion 311b does not protrude from the first side edge 21d of the first fastener tape 21.

[0020] As shown in Fig. 4, the first fastener tape 21 and the first filament element 31 are fixed to each other by holding the first leg portion 311b of the frontmost end portion 311 of the first filament element 31 so that it is positioned more inward than the first side edge 21d of the first fastener tape 21, and then applying heat and pressure to the frontmost first leg portion 311b and the first inverted portion 311c of the first filament element 31 together with the first core cord 21c onto the first fastener tape 21. Heat and pressure may be applied by crushing and welding using ultrasonic processing, high-frequency processing, or the like, or by welding using a heating element with a built-in laser beam or electric heater. By applying heat and pressure, the first leg portion 311b and the first core cord 21c form the welded portion 311d and the welded portion 21c1, respectively, which fixes the first filament element 31 to form the first fastener stringer 11.

[0021] According to this embodiment, the first leg portion 311b is present at a position D below the first linear element 31, and the first leg portion 311b at the position D faces and contacts the first fastener tape 21. Therefore, the welded portion 311d formed by the first leg portion 311b and the first inverted portion 311c is in close contact with the first fastener tape 21, and a sense of unity between the first fastener tape 21 and the welded portion 311d can be obtained. The welded portion 311d may be formed by the method described in Patent Document 3.

[0022] Furthermore, a top stop 4 is fixed to the front F of the first and second wire elements 31 and 32, and one bottom stop 5 is fixed to the rear B of the first and second wire elements 31 and 32. This prevents the slider 7 from slipping off from the front and rear ends of the first and second wire elements 31, 32 during normal use. A first top stop 41 is provided on the first fastener stringer 11 at a distance from the front end 311 of the first wire element 31. A second top stop 42 is provided on the second fastener stringer 12 in contact with the front end of the second wire element 32.

[0023] The first top end stop 41 and the second top end stop 42 are formed by injection molding or extrusion molding a thermoplastic resin such as nylon, polyacetal, polyamide, polypropylene, or polybutylene terephthalate onto the first fastener tape 21 and the second fastener tape 22, respectively, but are not limited to these.

[0024] When the user moves the slider 7 forward F, the gap between the first and second wire elements 31, 32 of the pair of fastener stringers 11, 12 closes, and when the user moves the slider 7 backward B, the gap between the first and second wire elements 31, 32 opens. The first top stop 41 and the second top stop 42 limit the movement of the slider 7 forward F.

[0025] Fig. 5 shows the first top stop 41 of the slide fastener 1 of this embodiment as seen from above. Fig. 6 shows the first top stop 41 of the slide fastener 1 of this embodiment as seen from below. Fig. 7 shows the first top stop 41 of the slide fastener 1 of this embodiment as seen from the right.

[0026] The first top end stop 41 of this embodiment has a first front portion 41a bulging out toward the front side from the first fastener tape 21 of the first fastener stringer 11, a first back portion 41b bulging out toward the back side of the first fastener tape 21, a reference surface 41c on the back side of the first front portion 41a where the first back portion 41b is not formed, and a tape contact surface 41d that contacts the first fastener tape 21. The first top end stop 41 does not include the front end portion 311 of the upper first linear element 31. Therefore, by forming the first back portion 41b connected to the first front portion 41a on the first back surface 21b of the first fastener tape 21, the adhesive strength of the first top end stop 41 to the first fastener tape 21 is increased.

[0027] As shown in Fig. 5, the first front portion 41a of this embodiment has a first front top surface 41a1 that is approximately rectangular and has chamfered corners, and a first front tapered portion 41a2 that protrudes from the first front top surface 41a1 toward the rear B and toward the guide posts 71c of the slider 7 shown in Fig. 3, and whose thickness from the reference plane 41c decreases as it moves outward from the first front top surface 41a1. The first front top surface 41a1 may be flat or may be a curved surface that is convex upward. The cross-sectional area of ​​the first front portion 41a parallel to the first fastener tape 21 gradually decreases from the reference plane 41c to the first front top surface 41a1.

[0028] As shown in FIG. 6, the first back portion 41b of this embodiment has a first back top surface 41b1 with a generally semicircular shape and chamfered corners, and a first back tapered portion 41b2 that protrudes from the first back top surface 41b1 toward the right rear and whose thickness from the first fastener tape 21 and the reference plane 41c decreases as it moves outward from the first back top surface 41b1. The first back top surface 41b1 may be flat or may be a curved surface that convex upward. The cross-sectional area of ​​the first back portion 41b parallel to the first fastener tape 21 and the reference plane 41c gradually decreases toward the first back top surface 41b1. The first back portion 41b is connected to approximately the left front half of the first front portion 41a directly or via the first fastener tape 21. Therefore, approximately the right rear half of the first front portion 41a is not connected to the first back portion 41b.

[0029] As shown in FIG. 7, the first front-side surface 41e of the first front portion 41a of this embodiment includes a rear side surface 41e1 in the rear B and a first post side surface 41e2 on the second fastener tape 22 side in the right R. The rear side surface 41e1 and the first post side surface 41e2 are formed in a concave shape. The first back-side surface 41f of the first back portion 41b of this embodiment includes an inclined surface 41f1 extending from the upper right to the lower left. The inclined surface 41f1 is formed in a concave shape that follows at least a part of the outer end of the lower wing 71b on the front opening 81 side. The rear side surface 41e1, the first post side surface 41e2, and the inclined surface 41f1 of the first upper stop 41 do not need to be concave, and may be flat, curved, bent, or the like.

[0030] FIG. 8 shows the second top end stop 42 of the slide fastener 1 of this embodiment as viewed from above.

[0031] The second top end stop 42 of this embodiment has a second front portion 42a that bulges upward U from the second surface 22a of the second fastener tape 22 of the second fastener stringer 12. The second top end stop 42 encompasses the front end portion 321 of the second linear element 32, thereby increasing the adhesive strength to the second fastener tape 22. The second top end stop 42 is not formed on the second back surface 22b side of the second fastener tape 22.

[0032] 8, the second front portion 42a of this embodiment has a second front top surface 42a1 that is substantially rectangular parallelepiped in shape with chamfered corners, and a second front tapered portion 42a2 that is located to the rear left of the second front top surface 42a1 and whose thickness from the second fastener tape 22 decreases as it moves outward from the second front top surface 42a1. The second front top surface 42a1 may be flat or may be a curved surface that is convex upward. The cross-sectional area of ​​the second front portion 42a parallel to the second fastener tape 22 may gradually decrease from the second fastener tape 22 toward the second front top surface 42a1.

[0033] The second front-side surface 42e of the second top stop 42 in this embodiment includes a flange side surface 42e1 on the right R and a second post side surface 42e2 on the left L. The flange side surface 42e1 and the second post side surface 42e2 of the second front-side surface 42e are preferably formed concavely. That is, it is preferable that at least one surface of the second front-side surface 42e in the left-right direction LR is formed concavely. By providing a gate in the concave portion of the second front-side surface 42e used during molding of the second top stop, even if burrs are generated, they can be made difficult to touch. Note that the flange side surface 42e1 and the second post side surface 42e2 of the second top stop 42 do not need to be concave and may be flat, curved, bent, or the like.

[0034] FIG. 9 shows the slider 7 of this embodiment.

[0035] The slider 7 has a body 71 and a pull handle 72 for pulling the body 71. The body 71 has an upper blade 71a, a lower blade 71b, and a guide post 71c connecting the front portions of the upper blade 71a and the lower blade 71b. The upper blade 71a has a first upper flange 71a1 extending downward D from one end in the left-right direction LR and a second upper flange 71a2 extending downward D from the other end. The lower blade 71b has a first lower flange 71b1 extending upward U from one end in the left-right direction LR and a second lower flange 71b2 extending upward U from the other end.

[0036] The slider 7 has a front opening 81 at the forward F end defined by the upper wing 71a, the lower wing 71b, and the guide post 71c, a rear opening 82 at the rear B end defined by the upper wing 71a and the lower wing 71b, and a guide passage 83 defined from the front opening 81 to the rear opening 82 by the upper wing 71a, the lower wing 71b, the guide post 71c, the first upper flange 71a1, the second upper flange 71a2, the first lower flange 71b1, and the second lower flange 71b2.

[0037] Fig. 10 shows the slide fastener 1 of this embodiment in the closed state as viewed from above. Fig. 11 shows the slide fastener 1 of this embodiment in the closed state as viewed from below. Fig. 12 shows the vicinity of the slider 7 of the slide fastener 1 as viewed through the upper wing 71a of this embodiment. Note that for ease of understanding, Fig. 12 leaves the first upper flange 71a1 and second upper flange 71a2 of the upper wing 71a of the slider 7 intact.

[0038] In this embodiment, the rear side surface 41e1 of the first upper stopper 41 abuts against the first upper flange 71a1 of the upper wing plate 71a of the slider 7 when the first fastener stringer 11 and the second fastener stringer 12 are not separated, thereby restricting the forward movement F of the slider 7.

[0039] In this embodiment, the first back side surface 41f of the first back side 41b includes an inclined surface 41f1 that slopes from the upper right to the lower left. The inclined surface 41f1 is formed in a concave shape, and when the first fastener stringer 11 and the second fastener stringer 12 are not separated, the inclined surface 41f1 abuts against the left front end of the lower wing 71b of the slider 7, restricting forward movement F of the slider 7.

[0040] The rear side surface 41e1 and the inclined surface 41f1 of the first top stop 41 abut against the slider 7, restricting its movement, so that the first top stop 41 cannot pass through the guide passage 83 of the slider 7. Therefore, when the first fastener stringer 11 and the second fastener stringer 12 are not separated, the first top stop 41 restricts the movement of the slider 7, so that the position of the slider 7 does not wobble and can be held appropriately.

[0041] The second front side surface 42e of the second top end stop 42 in this embodiment includes a flange side surface 42e1 and a second post side surface 42e2. When the first fastener stringer 11 and the second fastener stringer 12 are not separated, the flange side surface 42e1 is disposed along the second top flange 71a2 of the slider 7, and the second post side surface 42e2 is disposed along the guide post 71c of the slider 7. The second top end stop 42 can pass through the guide passage 83 of the slider 7.

[0042] Next, a method for removing the slider 7 from the fastener chain 10 in the slide fastener 1 of this embodiment will be described.

[0043] Figure 13 shows the first step of removing the slider 7 from the fastener chain 10 in the slide fastener 1 of this embodiment. For ease of understanding, the first and second fastener tapes 21, 22 are omitted from Figure 13.

[0044] When removing the slider 7 from the fastener chain 10, the user first pulls the first top stop 41 to the left front, as shown in FIG. 13, to remove it from the guide passage 83 of the slider 7. At this time, the user can easily remove the first top stop 41 by folding the front ear of the fastener chain 10 remaining in front of the top stop 4 backward and twisting the pull tab 72 of the slider 7 to slide the first top stop 41 outward. Since the first top stop 41 is not included in the front end 311 of the first wire element 31, pulling the first top stop 41 slightly stretches the first fastener tape 21 between the first top stop 41 and the front end 311 of the first wire element 31, and the first top stop 41 can be removed from the guide passage 83. Here, the first front portion 41a of the first top stop 41 is formed with a first front tapered portion 41a2, which reduces the thickness, so the first top stop 41 can be easily removed from the guide passage 83.

[0045] Figure 14 shows a second step of removing the slider 7 from the fastener chain 10 in the slide fastener 1 of this embodiment. For ease of understanding, the upper wing 71a of the body 71 is omitted in Figure 14.

[0046] 14, the user moves the first top end stop 41 to the left L of the first top flange 71a1 of the slider 7. Then, the first top flange 71a1 of the slider 7 is positioned between the first top end stop 41 and the front end portion 311 of the first wire element 31. In other words, the first side edge 21d of the first fastener tape 21 is positioned between the first top flange 71a1 and the first bottom flange 71b1 of the slider 7.

[0047] At this time, because the rear side surface 41e1 is formed as a concave surface, the first top stop 41 can easily move along the first top flange 71a1 of the slider 7. In addition, because the first post side surface 41e2 is formed as a concave surface, the first top stop 41 can easily move along the guide post 71c of the slider 7.

[0048] The second top stop 42 enters the guide passage 83 of the slider 7. At this time, the second front portion 42a of the second top stop 42 is formed with a second front tapered portion 42a2, which reduces the thickness, so the second top stop 42 can easily enter the guide passage 83. In addition, the flange side surface 42e1 is formed as a concave surface, so the second top stop 42 can easily move along the second top flange 71a2 of the slider 7. Furthermore, the second post side surface 42e2 is formed as a concave surface, so the second top stop 42 can easily move along the guide post 71c of the slider 7.

[0049] Figure 15 shows a third step of removing the slider 7 from the fastener chain 10 in the slide fastener 1 of this embodiment. For ease of understanding, the upper wing 71a of the body 71 is omitted in Figure 15.

[0050] 13, the user pulls the slider 7 forward. The first side edge 21d of the first fastener tape 21 passes between the first upper flange 71a1 and the first lower flange 71b1 of the slider 7 and then comes out through the rear opening 82. The second upper stop 42 also passes through the guide passage 83 of the slider 7 and then comes out through the rear opening 82.

[0051] FIG. 16 shows the fastener chain 10 after the slider 7 has been removed in the slide fastener 1 of this embodiment.

[0052] Finally, the slider 7 comes off the fastener chain 10. After that, when the pulling on the first top end stop 41 is stopped, the stretch of the first fastener tape 21 is released, and the fastener chain 10 remains in the closed state.

[0053] In this way, the slide fastener 1 of this embodiment allows the slider 7 to be quickly removed while the fastener chain 10 remains in the closed state. Therefore, the fastener chain 10 from which the slider 7 has been removed can be recycled together with resin, and can be used for garment recycling, which restores clothing to its fibrous state and regenerates it.

[0054] As described above, the slide fastener 1 of this embodiment comprises a fastener chain 10 including a pair of left and right first and second fastener stringers 11, 12 in which first and second resin line elements 31, 32 are attached to the first and second side edges 21d, 22d of a pair of left and right first and second fastener tapes 21, 22, respectively; a slider 7 through which the first and second line elements 31, 32 pass and which opens and closes the space between the first and second fastener stringers 11, 12; , 12, a first top stop 41 attached to the first fastener tape 21 in front F of the first linear element 31, and a second top stop 42 attached to the second fastener tape 22 in front F of the second linear element 32, the first top stop 41 being installed so as to be able to approach and move away from the front end 311 of the first linear element 31 at the most forward F and having a shape that prevents the slider 7 from passing through, and the second top stop 42 being installed so as to encompass the front end 321 of the second linear element 32 at the most forward F and having a shape that allows the slider 7 to pass through.

[0055] Therefore, according to the slide fastener 1 of this embodiment, the slider 7 can be quickly removed while the fastener chain 10 remains in the closed state. Therefore, the fastener chain 10 from which the slider 7 has been removed can be recycled together with resin, and can be used for garment recycling, which restores clothing to a fibrous state and regenerates it.

[0056] In addition, in the slide fastener 1 of this embodiment, the first top stop 41 has a first front portion 41a formed on the upper U side of the first fastener tape 21, and the first front portion 41a has a first front top surface 41a1 and a first front tapered portion 41a2 that protrudes from the first front top surface 41a1 toward the rear B and the second fastener tape 22, and whose thickness from the first fastener tape 21 becomes thinner than that of the first front top surface 41a1 the further away from the first front top surface 41a1.

[0057] Therefore, according to the slide fastener 1 of this embodiment, when the first top end stop 41 is removed from the slider 7, the first top end stop 41 is less likely to get caught on the slider 7.

[0058] In addition, in the slide fastener 1 of this embodiment, the first upper stop 41 has a first front portion side surface 41e that forms the side surface of the first front portion 41a, and at least one surface of the first front portion side surface 41e on the rear B and second fastener tape 22 side is formed concave.

[0059] Therefore, according to the slide fastener 1 of this embodiment, when the first top end stop 41 is removed from the slider 7, the first top end stop 41 is less likely to get caught on the slider 7.

[0060] In addition, in the slide fastener 1 of this embodiment, the first upper stop 41 has a first back portion 41b formed on the downward D side of the first fastener tape 21, and the first back portion 41b has a first back top surface 41b1 and a first back portion side surface 41f forming the side surface of the first back portion 41b, and the rear B of the first back portion side surface 41f is formed into an inclined surface 41f1 along at least a portion of the front end of the slider 7.

[0061] Therefore, according to the slide fastener 1 of this embodiment, the front end of the slider 7 abuts against the inclined surface 41f1 of the first top stop 41 during normal use, and the slider 7 does not come off the fastener chain 10.

[0062] In addition, in the slide fastener 1 of this embodiment, the slider 7 has a body 71 and a pull tab 72 for pulling the body 71. The body 71 has an upper wing 71a, a lower wing 71b, and a guide post 71c connecting the front portions of the upper wing 71a and the lower wing 71b. The upper wing 71a has a first upper flange 71a1 extending downward D from one end in the left-right direction LR and a second upper flange 71a2 extending downward D from the other end. The lower wing 71b has a first lower flange 71b1 extending upward U from one end in the left-right direction LR and a second lower flange 71b extending upward U from the other end. 2, and has a front opening 81 at the forward F end defined by the upper wing plate 71a, the lower wing plate 71b, and the guide post 71c, a rear opening 82 at the rear B end defined by the upper wing plate 71a and the lower wing plate 71b, and a guide passage 83 defined by the upper wing plate 71a, the lower wing plate 71b, the guide post 71c, the first upper flange 71a1, the second upper flange 71a2, the first lower flange 71b1, and the second lower flange 71b2 from the front opening 81 to the rear opening 82, and the width dimension in the left-right direction LR of the first upper stop 41 is greater than the width dimension in the left-right direction LR of at least one point of the guide passage 83.

[0063] Therefore, according to the slide fastener 1 of this embodiment, the slider 7 does not come off the fastener chain 10 during normal use.

[0064] Although various embodiments of the present invention have been described, the present invention is not limited to these embodiments, and embodiments formed by appropriately combining the configurations of each embodiment also fall within the scope of the present invention. [Explanation of symbols]

[0065] 1...slide fastener, 10...Zipper chain, 11...first zipper stringer, 12...second zipper stringer, 2...zipper tape, 21...first fastener tape, 21a...surface, 21b...back surface, 21c...core string, 21c1...welded portion, 22...second zipper tape, 22a...surface, 22b...back surface, 22c...core string, 3...Element, 31...first wire element, 31a...first coupling head, 31b...first leg, 31c...first inverted portion, 311...front end, 311b...first leg at front end, 311c...first inverted portion at front end, 311d...welded portion 32...second linear element, 32a...second engagement head, 32b...second leg portion, 32c...first inverted portion, 321...front end portion, 4...Top stop; 41...first upper stop; 41a...first front portion, 41a1...first front top surface, 41a2...first front tapered surface, 41b...first back portion, 41b1...first back top surface, 41b2...first back tapered surface, 41c...reference surface, 41d...tape contact surface, 41e...1st front side, 41e1...rear side, 41e2...1st column side, 41f...first back side, 41f1...slanted surface, 42...Second top stop; 42a... second front portion, 42a1... second front top surface, 42a2... second front tapered surface, 42e... second front side, 42e1... flange side, 42e2... second pillar side, 5...Lower stop; 7...slider, 71...torso, 71a... upper blade, 71a1... first upper flange, 71a2... second upper flange, 71b...lower wing plate, 71b1...first lower flange, 71b2...second lower flange, 71c...guidepost, 72...Pull handle 81...Front entrance, 82...Rear entrance, 83...Guide passage

Claims

1. a fastener chain (10) including a pair of left and right first and second fastener stringers (11, 12) in which first and second linear elements (31, 32) made of resin are attached to first and second side edges (21d, 22d) of a pair of left and right first and second fastener tapes (21, 22), respectively; a slider (7) through which the first and second linear elements (31, 32) pass and which opens and closes the space between the first and second fastener stringers (11, 12); a bottom stop (5) connecting the first and second fastener stringers (11, 12) rearward of the first and second fastener stringers (11, 12); a first top stop (41) attached to the first fastener tape (21) in front (F) of the first linear element (31); a second top stop (42) attached to the second fastener tape (22) in front (F) of the second linear element (32); Equipped with The first upper stop (41) is The first linear element (31) is provided with a front end (311) of the first linear element (31) that can approach and move away from the front end (311) of the first linear element (31) and has a shape that does not allow the slider (7) to pass through, The second upper stop (42) is The second linear element (32) is disposed so as to encompass the front end (321) of the forwardmost (F) of the second linear element (32), and is shaped so as to be able to pass through the slider (7). A slide fastener (1) characterized by: However, in the longitudinal direction of the first and second fastener tapes (21, 22), the side of the first top end stop (41) and the second top end stop (42) is defined as the front (F), and the side of the bottom end stop (5) is defined as the rear (B), the direction horizontal to the surfaces of the first and second fastener tapes (21, 22) and perpendicular to the front-to-back direction is defined as the left-right direction (L-R), and the direction perpendicular to the surfaces of the first and second fastener tapes (21, 22) is defined as the up-down direction (U-D).

2. The first top end stop (41) has a first front portion (41a) formed on the upper (U) side of the first fastener tape (21), The first front portion (41a) comprises a first front top surface (41a1) and a first front tapered portion 41a2 that protrudes rearward (B) from the first front top surface (41a1) and toward the second fastener tape (22), and whose thickness from the first fastener tape (21) becomes thinner than that of the first front top surface (41a1) as it moves away from the first front top surface (41a1); have A slide fastener (1) according to claim 1.

3. The first top end stop (41) has a first front portion side surface (41e) that forms a side surface of the first front portion (41a), At least one surface of the first front side surface (41e) on the rear side (B) and the second fastener tape (22) side is formed in a concave shape. A slide fastener (1) according to claim 2.

4. The first top end stop (41) has a first back portion (41b) formed on the lower (D) side of the first fastener tape (21), The first back portion (41b) has a first back top surface (41b1) and a first back side surface (41f) that forms a side surface of the first back portion (41b), The rear (B) of the first rear side surface (41f) is formed into an inclined surface (41f1) along at least a part of the front end of the slider (7). A slide fastener (1) according to claim 1.

5. The slider (7) It has a body (71) and a pull tab (72) for pulling the body (71), The fuselage (71) has upper blades (71a), lower blades (71b), and guide columns (71c) connecting the front portions of the upper blades (71a) and the lower blades (71b), The upper blade (71a) has a first upper flange (71a1) extending downward (D) from one end in the left-right direction (L-R), and a second upper flange (71a2) extending downward (D) from the other end, The lower blade (71b) has a first lower flange (71b1) extending upward (U) from one end in the left-right direction (L-R) and a second lower flange (71b2) extending upward (U) from the other end, a front opening (81) at the front (F) end defined by the upper blade (71a), the lower blade (71b), and the guide post (71c); a rear opening (82) at the rear (B) end defined by the upper blade (71a) and the lower blade (71b); and, a guide passage (83) defined by the upper blade (71a), the lower blade (71b), the guide post (71c), the first upper flange (71a1), the second upper flange (71a2), the first lower flange (71b1), and the second lower flange (71b2) from the front opening (81) to the rear opening (82); is formed, The width dimension of the first upper stop (41) in the left-right direction (LR) is larger than the width dimension of at least one portion of the guide passage (83) in the left-right direction (LR). A slide fastener (1) according to claim 1.

6. A top stop (4) for use in the slide fastener (1) according to any one of claims 1 to 5.

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