zipper

Abstract

The opening and closing member (60) of the slide fastener (10) has a case (61), a case bar (62), and a latch (90). The case (61) has a mounting portion (67) provided on one side in the width direction and mounting one of the slide fastener tapes (20A), and an insertion portion (80) provided on the other side in the width direction and formed with an insertion space portion (81) into which the latch (90) is inserted. A space portion (S1) between the latch (90) and the end fastener element (31E) of the other slide fastener element row (30B) located at the front end of the one end portion is provided on the cloth tape side edge portion in a state in which the slide fastener element rows (30A, 30B) are not provided and the core cord (32) is exposed, and the space portion (S1) is formed with at least one pitch (P) of the adjacent fastener elements (31).

Description

Technical Field

[0001] This invention relates to a zipper with an opening and closing mechanism. Background Technology

[0002] Generally, zippers are broadly classified into two representative types: one is the ordinary type where the interlocking left and right chain teeth are positioned on the surface of the zipper tape and exposed; the other is the concealed type where the interlocking left and right chain teeth are hidden from the outside (so-called concealed zippers). Concealed zippers offer the advantage of not hindering product design due to their discreetness, making them suitable for various clothing, shoes, and other products. In recent years, they have also been used in seat covers for automobiles and trains (see, for example, Patent Document 1).

[0003] In a concealed zipper, the opposing side edges of a pair of zipper tapes are bent into a U-shape along their length. Multiple zipper teeth are then arranged at predetermined intervals along the outer surface of the folded portion of the U-shape to form the zipper teeth. Furthermore, the zipper pull has L-shaped flanges that rise from the left and right side edges of the lower wing plate towards the surface and are bent at right angles towards each other. It also has a post that rises from the center of one end of the lower wing plate towards the surface and has a pull tab mounting portion at its front end. The Y-shaped space formed between the lower wing plate and the L-shaped flanges serves as a tooth guide passage (see, for example, Patent Document 2).

[0004] Furthermore, in concealed zippers, an opening / closing element is also provided at one end of the left and right zipper straps (for example, see Patent Document 3). Therefore, when the opening / closing element is connected, the pin installed at the end of one zipper strap needs to pass through the Y-shaped space of the zipper pull and then be inserted into the pin insertion space of the housing installed at the end of the other zipper strap.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent No. 5269103

[0008] Patent Document 2: Japanese Patent No. 5474073

[0009] Patent Document 3: Japanese Patent No. 4651634 Summary of the Invention

[0010] The problem that the invention aims to solve

[0011] However, in the concealed zipper for automotive use described in Patent Document 1, the car seat cover sewn onto the zipper tape is hard and thick. Therefore, in the concealed zipper described in Patent Document 1, in order to prevent the zipper teeth from being exposed even when the left and right zipper tapes are under tension while being pulled, a rigid restraining member is provided in the tape portion that is folded back into a U-shape.

[0012] In concealed zippers with stiff, thick seats and rigid zipper tape folded back into a U-shape, a considerable amount of force is required to pull the zipper head up when closing the concealed zipper while rolling the zipper tape in. Therefore, to close the zipper properly, a large zipper head has traditionally been used, with the parallel portion on the rear side of the L-shaped flange forming a long shape.

[0013] However, when inserting the pin of the opening and closing mechanism into such a large slider with a parallel length, the pin may interfere with the flange with an L-shaped cross section, and the pin may also float up when pulling up the slider. Therefore, improvements in operability when inserting the pin and pulling up the slider are required.

[0014] The present invention was made in view of the foregoing circumstances, and its object is to provide a zipper that can prevent interference between the zipper pull and the latch even when using a large zipper pull, and can improve the operability of pulling up the zipper pull when connecting the opening and closing parts.

[0015] Solution for solving the problem

[0016] The above-mentioned objective of the present invention is achieved by the following structure.

[0017] (1) A zipper, said zipper comprising:

[0018] A pair of zipper straps, the pair of zipper straps having a pair of zipper fabric strips and a pair of zipper teeth sewn onto the side edges of the fabric strips; and

[0019] An opening / closing component is provided at one end of the pair of zipper tapes along the length of the zipper tape, capable of separating or connecting one end of the pair of zipper tapes.

[0020] in,

[0021] The zipper teeth insert the core cord between the upper and lower legs of the zipper teeth.

[0022] The opening / closing component includes:

[0023] A housing, the housing being disposed at one end of the zipper tape of one of the pair of zipper teeth rows in the longitudinal direction, having a surface, a back surface and a pair of side surfaces;

[0024] Box rod, the box rod being fixed to the box body and protruding forward from one side of the box body along its width direction; and

[0025] A pin, wherein the pin is disposed at one end of the zipper tape in the longitudinal direction of the other zipper tooth row of the pair of zipper tooth rows.

[0026] The box body has a mounting part and an insertion part. The mounting part is located on one side of the box body in the width direction and mounts the zipper tape on one side. The insertion part is located on the other side of the box body in the width direction and forms an insertion space for inserting the pin.

[0027] Between the pin and the end zipper teeth of the other zipper tooth row located at one end, a spacer portion disposed on the side edge of the tape in a state where the zipper tooth row is not provided and the core cord is exposed forms at least one spacing between adjacent zipper teeth.

[0028] (2) According to the zipper described in (1), where,

[0029] A locking piece extending in the width direction and locking onto the rear surface of the housing is provided at the front end of the pin.

[0030] The side of the box bar in the width direction and the side of the insertion space portion of the box body in the width direction together with the front surface of the box body disposed between the two form a stepped shape.

[0031] The side of the pin in the width direction is formed into a stepped shape, so that when the locking piece is locked to the lower surface of the box body, it contacts the side of the box bar in the width direction and the front surface of the box body.

[0032] (3) The zipper described in (1) or (2), wherein,

[0033] The insertion portion is such that the side of the insertion space portion forming the other side in the width direction is inclined in a manner that, in the length direction of the zipper tape, it tends towards the side in the width direction as it moves from the front to the rear.

[0034] (4) Based on any one of the zippers described in (1) to (3), where,

[0035] The zipper is a concealed zipper in which the opposing side edges of the pair of zipper tapes are bent into a U-shape, and the zipper teeth are sewn into the bent, folded-back portion of the side edges of the pair of zipper tapes.

[0036] The pin is injection molded into the core cord inserted into the zipper teeth of the other party and the bend in the zipper tape of the other party.

[0037] (5) According to the zipper described in (4), where,

[0038] The pin has: a main body portion that receives the tape bend of the zipper tape of the other zipper teeth row; and a thin-walled portion that is disposed on the side from which the zipper tape extends in the width direction from the main body portion, and is thinner than the main body portion by cutting off the side from which the zipper tape extends.

[0039] (6) Based on any one of the zippers described in (1) to (5), where,

[0040] The mounting portion of the housing has a front-side upright wall and a side upright wall. The front-side upright wall extends forward from the front surface of the housing, and the side upright wall extends forward from the front surface of the housing in a manner that connects the side surface of the housing bar to the front-side upright wall.

[0041] When the rear opening of the zipper head abuts against the front surface of the box body, the front upright wall, the side upright wall, and the box bar surround the inward portion of the width direction of the first flange with an L-shaped cross-section formed by the zipper head.

[0042] (7) Based on any one of the zippers described in (1) to (6), where,

[0043] The length of the interval is set such that when the rear opening of the zipper pull abuts against the front surface of the housing and the pin is held in the insertion space of the housing, the end zipper teeth are located on the shoulder side of the parallel portion. The parallel portion is a parallel portion that extends from the rear opening of the first flange that is erected on the left and right side edges of the zipper pull.

[0044] Invention Effects

[0045] According to the present invention, by providing a spacer, even when using a large zipper pull, the pin can smoothly pass through the zipper pull and be inserted into the insertion space of the housing, thereby improving operability when connecting the opening and closing parts and when pulling up the zipper pull. Attached Figure Description

[0046] Figure 1 This is a perspective view of a car seat using the concealed zipper of this embodiment.

[0047] Figure 2 It is a schematic cross-sectional view showing the state of a zipper strap being sewn onto the upholstery material of a car seat.

[0048] Figure 3 (a) is a top view of the puller head. Figure 3 (b) is a side view of the pull head viewed from the rear opening side.

[0049] Figure 4 (a) is a front view of the concealed zipper, showing the zipper pull, opening / closing mechanism, and zipper tape in the pull-up starting position with the zipper pull pulled up from the opening / closing mechanism. Figure 4 (b) is Figure 4 (a) A sectional view along line IV-IV.

[0050] Figure 5 It is a perspective view of one end of a pair of zipper straps with opening and closing mechanisms in a connected state, viewed from the back side.

[0051] Figure 6 (a) is a front view of one end of a pair of zipper straps with opening and closing mechanisms in the connected state. Figure 6 (b) is its rear view.

[0052] Figure 7 It is a three-dimensional view of one end of a pair of zipper straps with opening and closing mechanisms, showing them in a separated state.

[0053] Figure 8 (a) is a front view showing the opening and closing mechanism with the latch locked in place by the housing. Figure 8 (b) is its rear view. Figure 8 (c) is its top view.

[0054] Figure 9 (a) is a front view of the box body and box bars. Figure 9 (b) is its rear view.

[0055] Figure 10 (a) is the front view of the latch. Figure 10 (b) is its rear view.

[0056] Figure 11 (a) is Figure 8 (c) is a sectional view along line XI-XI. Figure 11 (b) corresponds to the process of inserting the pin into the insertion space of the housing. Figure 11 (a) is a sectional view. Detailed Implementation

[0057] Hereinafter, based on the accompanying drawings, one embodiment of the concealed zipper of the present invention will be described in detail. It should be noted that, in the following description, "surface" refers to the side relative to... Figure 2 The top side of the paper and relative to Figure 4 (a) The front side of the paper, the back side refers to the side relative to the front side. Figure 2 The bottom side of the paper and relative to Figure 4 (a) The depth side of the paper. Furthermore, "front side" refers to the side relative to the front side. Figure 4 (a) The top side of the paper, the back side refers to the side relative to the paper. Figure 4 (a) The bottom side of the paper, left side refers to the side relative to the left side of the paper. Figure 2 and Figure 4 (a) The left side of the paper, the right side refers to the side relative to the left side of the paper. Figure 2 and Figure 4 (a) is on the right side of the paper. Therefore, the left-right direction of the concealed zipper is the width direction of the pair of zipper teeth described later, and also the width direction of the box body described later. Moreover, the front-back direction of the concealed zipper is also the length direction of the box bar, with the direction in which the zipper teeth close as the zipper head moves being the front side, and the direction in which the zipper teeth open being the rear side.

[0058] Figure 1 This invention illustrates a car seat using a concealed zipper according to this embodiment. Figure 2 A cross-section of the concealed zipper is shown. Figure 3 The zipper pull of the concealed zipper is shown. Furthermore, Figures 4-11 This shows one end of a pair of zipper straps used in a concealed zipper and having an opening mechanism.

[0059] like Figure 1 As shown, in a car seat, the zipper straps 11A and 11B fitted at the edges of the two seat covers 1 are closed by sliding the zipper pull 40 to cover the seat cushion. At this time, in the concealed zipper 10 of this embodiment, the left and right zipper teeth rows 30A and 30B (refer to...) constitute the engagement of the zipper straps 11A and 11B. Figure 2 It is hidden from view from the outside.

[0060] Reference Figure 1 and Figure 2 The concealed zipper 10 includes: a pair of zipper straps 11A and 11B, each with zipper teeth 30A and 30B sewn onto its respective zipper fabric 20A and 20B; a zipper pull 40 that can slide along the zipper teeth 30A and 30B formed on each zipper strap 11A and 11B; and an opening / closing member 60, which is provided at one end of the pair of zipper straps 11A and 11B along the length direction of the zipper fabric (hereinafter also referred to as the "fabric length direction"), and is capable of separating or connecting one end of the pair of zipper straps 11A and 11B. It should be noted that a stop (not shown) may be provided at the other end of each pair of zipper teeth 30A and 30B.

[0061] A pair of zipper tapes 11A and 11B includes: a pair of zipper fabric tapes 20A and 20B, the side edges 24 of which face each other are bent into a U-shape along the length of the tape; a pair of continuous zipper teeth 30A and 30B, which are sewn to the outer surface of the bent folded portion 22 of the side edges 24 of the zipper fabric tapes 20A and 20B using sewing thread 12; and a limiting member 13, which is sewn together with the zipper teeth 30A and 30B to the inner surface of the folded portion 22 using sewing thread 12.

[0062] In addition, the left and right zipper tapes 20A and 20B each have: a tape body 21, which is disposed on the exposed side of the concealed zipper 10; a tape bending portion 23, which is continuously disposed from the tape body 21 and bent into a U-shape; and a fold-back portion 22, which extends from the side edge of the tape bending portion 23 along the tape width direction.

[0063] Zipper tooth rows 30A and 30B are formed by coil-shaped zipper teeth 31, which are formed from monofilaments made of synthetic resins such as polyamide and polyester. Each zipper tooth 31 constituting the zipper tooth rows 30A and 30B has: an engaging head 31a; upper and lower legs 31b and 31c extending from the engaging head 31a; and a leg connecting portion 31d that connects the end of the upper leg 31b or the lower leg 31c to the lower leg 31c or the upper leg 31b of the adjacent zipper tooth 31.

[0064] Furthermore, the zipper teeth 30A and 30B are sewn onto the zipper tapes 20A and 20B in such a manner that the core cord 32 passes between the upper and lower legs 31b and 31c of the zipper teeth 30A and 30B, and the engaging head 31a protrudes outward from the tape bend 23 toward the width direction (left-right direction) of the tape.

[0065] The limiting member 13 includes: a plurality of limiting main body portions 14, which are formed as thin-walled small pieces and are rectangular in shape when viewed from the front; and a connecting portion 15, which connects the limiting main body portions 14 along the length direction of the fabric strip. The connecting portion 15 is formed as a thin film with a certain width dimension, and the small piece-shaped limiting main body portions 14 are integrally formed on the connecting portion 15 at predetermined intervals along the length direction of the fabric strip, so that each limiting main body portion 14 is connected into a whole via the connecting portion 15.

[0066] In this case, the small sheet-like restricting main body 14 and the film-like connecting part 15 are formed by two-color molding. Furthermore, the restricting main body 14 is molded using a rigid synthetic resin such as polyamide, polyacetal, polypropylene, or polybutylene terephthalate, while the connecting part 15 is molded using a softer synthetic resin than the restricting main body 14, such as polyurethane, silicone rubber, or thermoplastic elastomer. It should be noted that in this invention, the material of the restricting member 13 is not limited and can be arbitrarily changed.

[0067] The limiting member 13 (particularly the limiting body 14) sewn onto the folded-back portion 22 of the zipper tapes 20A and 20B is disposed on the opposite side of the side in the folded-back portion 22 where the zipper teeth 31 are sewn, at a position where one edge of the limiting member 13 abuts against the inner surface of the tape bend 23 of the zipper tapes 20A and 20B when the zipper teeth 30A and 30B are engaged. It should be noted that, in this invention, the shape and size of each limiting member 13 are not particularly limited, but it is preferable that the shape and size of the limiting member 13 are set such that, for example, when the limiting member 13 is sewn at a position in the tape width direction aligning with the other edge of the limiting member 13 and the side edge of the folded-back portion 22 of the zipper tapes 20A and 20B, one edge of the limiting member 13 abuts against the inner surface of the tape bend 23 of the zipper tapes 20A and 20B.

[0068] like Figure 3 As shown, the zipper pull 40 for a concealed zipper includes a zipper pull body 41 and a pull tab (not shown) mounted on the upper surface of the zipper pull body 41. It should be noted that the zipper pull 40 can also be opened and closed by engaging a clamp with a ring at the front end of the zipper pull body 41 without the pull tab. The zipper pull body 41 includes: a lower wing plate 42 with a first flange 43 of an inverted L-shaped cross-section erected on its left and right side edges; a guide post 44 erected at the front end of the lower wing plate 42; a second flange 45 extending from the periphery of the upper surface of the guide post 44; and a gate-shaped pull tab mounting post 46 extending along the sliding direction of the zipper pull 40 on the upper surface of the second flange 45, mounting the pull tab so that it can rotate freely, forming a zipper tooth guide path 47 surrounded by the lower wing plate 42 and the first flange 43. It should be noted that although the pull tab is not shown, it can be mounted on the zipper pull 40, or the zipper pull 40 can be operated using a clamp.

[0069] Furthermore, the first flange 43 has parallel portions 48 extending from the rear opening, inclined portions 49 inclined towards the shoulder opening from the parallel portions 48 in a mutually separate manner, and straight portions 50 extending further towards the shoulder opening from the inclined portions 49 in a front-rear direction. It should be noted that in this embodiment, the front-rear lengths L1, L2, and L3 of the parallel portions 48, inclined portions 49, and straight portions 50 are set as L1>L2>L3. It should also be noted that L1 is the length of the outer shape of the parallel portions 48, and the inner length of the parallel portions 48 is the length of engagement of the zipper teeth rows 30A and 30B within the slider 40, which in the illustrated example is approximately the length of five teeth on one side.

[0070] Furthermore, by moving the zipper head 40 toward the stop side, the left and right zipper teeth 30A and 30B engage, and by moving the zipper head 40 toward the opening / closing member 60, the left and right zipper teeth 30A and 30B disengage.

[0071] According to the concealed zipper 10 obtained in this way, when the zipper pull is slid to engage the left and right zipper teeth 30A and 30B, the left and right fabric tape bends 23 abut against each other, and the restricting member 13 abuts against the inner surface of the fabric tape bends 23 to press the fabric tape bends 23, thus stably maintaining the left and right fabric tape bends 23 in an abutting state. Therefore, the engaged left and right zipper teeth 30A and 30B can be hidden from the exposed fabric tape sides of the zipper tapes 20A and 20B by the abutting left and right fabric tape bends 23.

[0072] In particular, when the concealed zipper 10 is engaged with the left and right zipper teeth 30A and 30B, even when the left and right zipper tapes 20A and 20B are subjected to lateral tension and pulled outward along the tape width direction, the left and right tape bends 23 are prevented from moving in the direction of separation by the limiting body 14 made of rigid resin, thus preventing the position of the left and right tape bends 23 from changing. Therefore, the left and right tape bends 23 can be stably kept in the docked state.

[0073] In addition, such as Figures 4-7 As shown, the opening / closing member 60 includes a housing 61 and a housing bar 62 disposed at one end of the left and right zipper tooth rows 30A and 30B, i.e., at one end of the zipper tooth row 30A in the direction of the fabric tape, and on the other hand, it includes a pin 90 disposed at one end of the left and right zipper tooth rows 30A and 30B, i.e., at one end of the zipper tooth row 30B in the direction of the fabric tape.

[0074] It should be noted that, in Figures 4-6 In the diagram, for simplicity, the left and right zipper tapes 20A and 20B with their bent portions 23 in the width direction are left spaced out when the left and right zipper teeth 30A and 30B are engaged.

[0075] Also Figure 8 and Figure 9 As shown, the box body 61 has a surface 63, a back surface 64 and a pair of side surfaces 65 and 66, forming a generally rectangular parallelepiped shape. The box rod 62 is fixed to the box body 61 and protrudes forward from one side of the box body 61 in the width direction.

[0076] The housing 61 has: a mounting portion 67, which is provided on one side in the width direction to mount a zipper tape 20A; and an insertion portion 80, which is provided on the other side in the width direction to form an insertion space portion 81 for inserting a pin 90.

[0077] Also Figure 4 (b) Figure 7 As shown, a front-side upright wall 70 and a side upright wall 71 are formed in the mounting portion 67 of the housing 61. The front-side upright wall 70 extends forward from the front surface 68 of the housing 61 on the surface 63 of the housing 61. The side upright wall 71 extends forward from the front surface 68 of the housing 61 in such a way that the side surface of the box bar 62 on the other side in the width direction is connected to the front-side upright wall 70.

[0078] On the other hand, the insertion space 81 is formed in the insertion portion 80 of the housing 61, extending from the front surface 68 to the rear surface 69 along the length direction of the fabric strip. Figure 7 , Figure 9 As shown in (a), a surface cutout 84 is formed such that it opens to the surface side of the housing 61. The surface cutout 84 is formed by cutting off a portion of the surface 63 of the insertion space 81 from the front surface 68 of the housing 61. The surface cutout 84 formed by cutting off the surface 63 is cut to the side 66 on the other side in the width direction.

[0079] In addition, the insertion space section 81 is also like Figure 5 , Figure 9 As shown in (b), a back cutout 85 is formed with an opening to the back side of the housing 61. The back cutout 85 is formed by cutting off a portion of the back side 64 of the insertion space 81 from the rear surface 69 of the housing 61.

[0080] In addition, such as Figure 8 and Figure 9 As shown, the side 62a on the other side of the width direction of the box bar 62 and the inner side 81a on the one side of the width direction of the insertion space 81 of the box body 61 together with the front surface 68 of the box body 61 form a stepped shape, and the side 62a on the other side of the width direction of the box bar 62 guides the pin 90 to be inserted into the insertion space 81.

[0081] In addition, the insertion portion 80 tilts the inner side 81b of the insertion space portion 81 on the other side of the width direction in such a way that it tends to be on the width direction side as it moves from the front to the rear in the direction of the fabric length.

[0082] like Figure 4 and Figure 5 As shown, the box body 61 and the box bar 62 are injection molded on one end of the core rope 32 of the zipper tooth row 30A and one end of the zipper tape 20A, and the pin 90 is injection molded on one end of the core rope 32 of the zipper tooth row 30B and one end of the zipper tape 20B.

[0083] That is, the end of the core cord 32 of one side of the zipper tooth row 30A is inserted into the interior of the box bar 62, and regarding one end of the zipper tape 20A, the tape body 21 is housed in the side upright wall 70 on one side of the box body 61 in the width direction, the tape bend 23 is housed in the side upright wall 71, and the folded-back portion 22 is housed inside the box bar 62 (see reference). Figure 4 (b)).

[0084] In addition, the end of the core cord 32 of the zipper tooth row 30B is inserted into the inside of the pin 90, and the folded-back portion 22 of one end of the zipper tape 20B is housed inside the pin 90.

[0085] Furthermore, the main body 21 and the bent part 23 of the zipper tooth row 30B of the other party are led out from the side of the pin 90, and the main body 21 of the zipper is located on the exposed side in a manner that is flush with the main body 21 of the zipper 20A.

[0086] like Figure 7 , Figure 10 As shown, the pin 90 has: a rod-shaped main body 91 that houses the zipper tape 20B of the zipper teeth 30B of the other zipper tape 20B; a generally cuboid thin-walled portion 92 that is provided on the side from which the zipper tape 20B extends from the main body 91 and is thinner than the main body 91 by cutting off the side of the zipper tape 20B that extends from it; and a locking piece 93 that is provided at the front end of the main body 91 and protrudes to the opposite side of the side forming the thin-walled portion 92.

[0087] The length L4 of the pin 90 (refer to) Figure 10 The length of the fabric tape is shorter than the first flange 43 of the pull head 40, and in this embodiment, it is shorter than the combined length (L1+L2) of the parallel portion 48 and the inclined portion 49 of the first flange 43. Furthermore, the thickness T of the pin 90 in the back-side direction (refer to...) Figure 4 (b) Within the height range of the front and back directions of the chain tooth guide 47 of the pull head 40. In this way, the pin 90 of this embodiment is miniaturized in both length and height.

[0088] The locking piece 93 protrudes rearward from the insertion space 81 that extends through the length of the fabric strip and extends to the other side in the width direction, locking onto the rear surface 69 of the housing 61. Thus, the pin 90 is held in the insertion space 81 of the housing 61, and the opening / closing member 60 is connected.

[0089] In addition, the pin 90 has an inclined surface 94 on the side of the main body 91 on the side forming the thin wall portion 92, which is tapered towards the front end, so the pin 90 with the locking piece 93 can be easily inserted into the space portion 81.

[0090] With the pin 90 inserted into the insertion space 81 of the housing 61 and the zipper pull 40 pulled upwards, the zipper tape 20B's tape bend 23 protrudes through the thin-walled portion 92 toward the mounting portion 67 of the housing 61. As a result, the tape bends 23 of the pair of zipper tapes 20B contact each other, allowing one end of the left and right zipper teeth rows 30A and 30B in the engaged state to be hidden from the exposed tape surface.

[0091] Furthermore, the side of the pin 90 in the width direction is formed into a stepped shape by the main body 91 and the thin-walled part 92, so that when the locking piece 93 is locked onto the rear surface 69 of the housing 61, it contacts the side 62a of the bar 62 in the width direction and the front surface 68 of the housing 61. In this way, by having the stepped side of the pin 90 in the width direction contact the side 62a of the bar 62 in the width direction and the front surface 68 of the housing 61, the posture of the pin 90 relative to the housing 61 can be more stable when the pin 90 is held in the housing 61.

[0092] Furthermore, the front upright wall 70, the side upright wall 71, and the box bar 62 are formed such that when the rear opening of the pull head 40 abuts against the front surface 68 of the box body 61, the width direction of the first flange 43 with an L-shaped cross section formed by the pull head 40 is surrounded.

[0093] Furthermore, in this embodiment, there is a spacing P between at least two adjacent zipper teeth 31 at the front end of one end of the pin 90 and the other zipper tooth row 30B. Figure 6 (b) The spacer S1. That is, the pin 90 constituting the spacer S1 is installed in the fold-back section 22 with the end zipper tooth 31E not provided and the core cord 32 exposed. However, the fold-back section 22 of the concealed zipper 10 used in automobiles has high rigidity due to the provision of the limiting member 13. Therefore, for example, when the pin 90 is inserted into the housing 61, the pin 90 can be operated via the core cord 32 and the fold-back section 22 by operating the zipper belt 11B.

[0094] Furthermore, the length of the spacer S1 is preferably such that, when the zipper pull 40 is in the pull-up starting position (described later), and the pin 90 is held in the insertion space 81 of the housing 61, the end zipper teeth 31E are located within the tooth guide path 47 of the zipper pull 40. Therefore, when the zipper pull 40 is pulled up, the step formed by the end zipper teeth 31E and the core cord 32 will not interfere with the shoulder of the zipper pull 40, improving the sliding properties of the zipper pull 40. More preferably, when the pin 90 is held in the insertion space 81 of the housing 61, the front end of the spacer S1, composed of the core cord 32 and the fold-back portion 22, extends beyond the parallel portion 48 of the first flange 43 of the zipper pull 40 and is located in the inclined portion 49 or the straight portion 50. Thus, the parallel portion 48 is the position where the left and right zipper teeth 31 begin to engage. At this position, at least one of the chain straps 11A and 11B has a spacer portion S1 and S2, so that it will not interfere with the other zipper teeth 31. This allows one chain strap 11B to be easily inserted into the zipper head 40, and also prevents an unsuitable snapping sensation when inserting it into the zipper head 40.

[0095] It should be noted that, regarding one zipper tooth row 30A, a spacer is not necessarily required between the box bar 62 and the end zipper tooth 31E located at one end of one zipper tooth row 30A. However, it may have a spacer S2 with a distance P between at least adjacent zipper teeth 31, similar to the other zipper belt 11B. In particular, from an operational point of view, it is preferable to cut the zipper teeth 31 of both the left and right zipper tooth rows 30A and 30B simultaneously, and it is preferable to set the end zipper teeth 31E of the left and right zipper tooth rows 30A and 30B to approximately the same position.

[0096] In this concealed zipper 10 configuration, when the zipper teeth 30A and 30B are engaged to close the concealed zipper 10, firstly, the rear end of the zipper pull 40 is pulled down until it abuts against the front surface 68 of the housing 61. At this time, as... Figure 4 As shown in (b), the bar 62 is disposed within the chain guide 47, and the first flange 43 on one side of the pull head 40 is surrounded in the width direction between the bar 62 and the front side upright wall 70 on one side of the width direction, thereby positioning the pull head 40 relative to the front and back directions of the box body 61.

[0097] The state in which the rear opening of the zipper 40 abuts against the front surface 68 of the housing 61 is the starting position for pulling up the zipper 40 when the concealed zipper 10 is closed.

[0098] In contrast to the zipper pull 40 in the pull-up starting position and the housing 61, the pin 90 at one end of the other zipper tooth row 30B is inserted into the other tooth guide 47 of the zipper pull 40 and then housed in the insertion space 81 of the housing 61.

[0099] At this time, the locking piece 93 of the pin 90 contacts the inner surface 81b of the insertion space 81 on the other side of the inclined width direction, and the thin-walled portion 92 of the pin 90 contacts the side surface 62a of the box bar 62 on the other side of the width direction. Thus, while the locking piece 93 of the pin 90 contacts the side surface 81b of the insertion space 81 on the other side of the inclined width direction, the pin 90 undergoes elastic deformation and is inserted into the insertion space 81 (see reference). Figure 11 (b) Thus, when the locking piece 93 passes over the insertion space 81 and locks onto the rear surface 69, it can provide the operator with a good locking feel.

[0100] Here, the pin 90 at one end of the zipper tooth row 30B is smaller than that of conventional pins (e.g., Patent Document 3) because it is not resin-injected into the fabric tape bending portion 23. Furthermore, the end zipper tooth 31E is separated from the pin 90 by the spacer portion S1. Therefore, even when the parallel portion 48 of the first flange 43 is long, the pin 90 can easily pass through the tooth guide path 47.

[0101] Therefore, when working in the factory, the insertion of the latch can be completed by detecting the latch, and the opening / closing part 60 can be configured so that it will not float when the pull head 40 is operated.

[0102] In addition, the insertion portion 80 of the housing 61 partially cuts off the surface 63 and the side 66 on the other side in the width direction through the surface cut portion 84, so that the insertion space portion 81 is open to the surface side, thus making manufacturing easier.

[0103] It should be noted that the concealed zipper 10 of this embodiment, such as that used as described above for installing a seat cover for a car seat, is preferably applied to a part where the opening and closing member 60 is not frequently separated. However, the opening and closing member 60 can be separated by elastically deforming the pin 90 to release the locking piece 93 of the pin 90 from the rear surface 69 of the housing 61.

[0104] It should be noted that the present invention is not limited to the technology exemplified in the above embodiments, and appropriate modifications can be made without departing from the spirit of the present invention.

[0105] For example, in the above embodiments, a concealed zipper is used to illustrate the present invention, but the present invention can also be applied to zippers other than concealed zippers.

[0106] As stated above, the following matters are disclosed in this specification.

[0107] (1) A zipper, said zipper comprising:

[0108] A pair of zipper straps, the pair of zipper straps having a pair of zipper fabric strips and a pair of zipper teeth sewn onto the side edges of the fabric strips; and

[0109] An opening / closing component is provided at one end of the pair of zipper tapes along the length of the zipper tape, capable of separating or connecting one end of the pair of zipper tapes.

[0110] in,

[0111] The zipper teeth insert the core cord between the upper and lower legs of the zipper teeth.

[0112] The opening / closing component includes:

[0113] A housing, the housing being disposed at one end of the zipper tape of one of the pair of zipper teeth rows in the longitudinal direction, having a surface, a back surface and a pair of side surfaces;

[0114] Box rod, the box rod being fixed to the box body and protruding forward from one side of the box body along its width direction; and

[0115] A pin, wherein the pin is disposed at one end of the zipper tape in the longitudinal direction of the other zipper tooth row of the pair of zipper tooth rows.

[0116] The box body has a mounting part and an insertion part. The mounting part is located on one side of the box body in the width direction and mounts the zipper tape on one side. The insertion part is located on the other side of the box body in the width direction and forms an insertion space for inserting the pin.

[0117] Between the pin and the end zipper teeth of the other zipper tooth row located at one end, a spacer portion disposed on the side edge of the tape in a state where the zipper tooth row is not provided and the core cord is exposed forms at least one spacing between adjacent zipper teeth.

[0118] According to this structure, by setting the interval, even when using a large zipper, the pin can smoothly pass through the zipper and be inserted into the insertion space of the box and held in place, thus improving the operability when connecting the opening and closing parts and pulling up the zipper.

[0119] (2) According to the zipper described in (1), where,

[0120] A locking piece extending in the width direction and locking onto the rear surface of the housing is provided at the front end of the pin.

[0121] The side of the box bar in the width direction and the side of the insertion space portion of the box body in the width direction together with the front surface of the box body disposed between the two form a stepped shape.

[0122] The side of the pin in the width direction is formed into a stepped shape, so that when the locking piece is locked to the lower surface of the box body, it contacts the side of the box bar in the width direction and the front surface of the box body.

[0123] With this structure, when the locking plate of the pin is locked onto the rear surface of the housing, the posture of the pin relative to the housing can be made more stable.

[0124] (3) The zipper described in (1) or (2), wherein,

[0125] The insertion portion is such that the side of the insertion space portion forming the other side in the width direction is inclined in a manner that, in the length direction of the zipper tape, it tends towards the side in the width direction as it moves from the front to the rear.

[0126] According to this structure, when the pin is inserted, the elastic deformation of the locking piece increases along the length of the zipper tape from front to back, thus increasing the locking feel when the locking piece is locked onto the rear surface of the box.

[0127] (4) Based on any one of the zippers described in (1) to (3), where,

[0128] The zipper is a concealed zipper in which the opposing side edges of the pair of zipper tapes are bent into a U-shape, and the zipper teeth are sewn into the bent, folded-back portion of the side edges of the pair of zipper tapes.

[0129] The pin is injection molded into the core cord inserted into the zipper teeth of the other party and the bend in the zipper tape of the other party.

[0130] According to this structure, during the injection molding of the pin, the core rope and the bent part of the fabric tape can be integrated, which can ensure the rigidity of the pin and the periphery of the spacer, and improve the insertion of the pin into the pull head and the housing.

[0131] (5) According to the zipper described in (4), where,

[0132] The pin has: a main body portion that receives the tape bend of the zipper tape of the other zipper teeth row; and a thin-walled portion that is disposed on the side from which the zipper tape extends in the width direction from the main body portion, and is thinner than the main body portion by cutting off the side from which the zipper tape extends.

[0133] According to this structure, the ground contact area of ​​the zipper tape and resin on the other side is increased, and the fixing strength of the pin is increased. Moreover, interference with the zipper pull can be reduced through the cut.

[0134] (6) Based on any one of the zippers described in (1) to (5), where,

[0135] The mounting portion of the housing has a front-side upright wall and a side upright wall. The front-side upright wall extends forward from the front surface of the housing, and the side upright wall extends forward from the front surface of the housing in a manner that connects the side surface of the housing bar to the front-side upright wall.

[0136] When the rear opening of the zipper head abuts against the front surface of the box body, the front upright wall, the side upright wall, and the box bar surround the inward portion of the width direction of the first flange with an L-shaped cross-section formed by the zipper head.

[0137] According to this structure, when the zipper is pulled down, it can be positioned relative to the housing along the back of the casing, and the insertion of the pin can also be improved.

[0138] (7) Based on any one of the zippers described in (1) to (6), where,

[0139] The length of the interval is set such that when the rear opening of the zipper pull abuts against the front surface of the housing and the pin is held in the insertion space of the housing, the end zipper teeth are located on the shoulder side of the parallel portion. The parallel portion is a parallel portion that extends from the rear opening of the first flange that is erected on the left and right side edges of the zipper pull.

[0140] According to this structure, it is possible to prevent deviation of the starting position of chain teeth engagement, and by reducing the non-engaged portion, it is possible to prevent chain breakage starting from the gap after closure.

[0141] Explanation of reference numerals in the attached figures

[0142] 10. Concealed zippers

[0143] 11A, 11B Zipper Chain

[0144] 20A, 20B Zipper Tape

[0145] 21. Main body of the fabric tape

[0146] 22 Return to the film section

[0147] 23. Fabric tape bend

[0148] 24. Side edge of the fabric tape

[0149] 30A and 30B zipper teeth

[0150] 31 Zipper teeth

[0151] 31E end zipper teeth

[0152] 32-core rope

[0153] 40 zipper pull

[0154] 41. Pull-out body

[0155] 42 Lower wing plate

[0156] 43 First flange

[0157] 44 guide pillars

[0158] 45 Second flange

[0159] 60 opening and closing parts

[0160] 61 Box

[0161] 62 boxes of rods

[0162] 63 Surface

[0163] 64 Back

[0164] Side views at 65 and 66

[0165] 67 Installation Department

[0166] 68 Front surface

[0167] 70 Side-mounted wall

[0168] 71 Side Erected Wall

[0169] 80 Insertion section

[0170] 81 Insertion Space Section

[0171] 90 pin

[0172] 91 Main Body

[0173] 92 Thin-walled section

[0174] 93 Cadence tablets

[0175] P spacing

[0176] S1 Spacing

Claims

1. A zipper (10), the zipper comprising: A pair of zipper straps (11A, 11B), the pair of zipper straps having a pair of zipper fabric straps (20A, 20B) and a pair of zipper teeth (30A, 30B) sewn onto the side edges of the fabric straps; and An opening / closing component (60) is disposed at one end of the pair of zipper tapes along the length of the zipper tapes, and is capable of separating or connecting one end of the pair of zipper tapes. in, The zipper teeth (30A, 30B) have the core cord (32) inserted between the upper and lower legs (31b, 31c) of the zipper teeth (30A, 30B). The opening / closing component includes: The housing (61) is disposed at one end of the zipper tape of one of the zipper teeth (30A) of the pair of zipper teeth, and has a surface (63), a back (64) and a pair of side surfaces (65, 66). Box bar (62), the box bar is fixed to the box body and protrudes forward from one side of the box body in the width direction; and A pin (90) is provided at one end of the zipper tape in the longitudinal direction of the other zipper tooth row (30B) of the pair of zipper tooth rows. The housing has a mounting part (67) and an insertion part (80). The mounting part is located on one side of the housing in the width direction and mounts the zipper tape (20A) on one side. The insertion part is located on the other side of the housing in the width direction and forms an insertion space (81) for inserting the pin. Between the pin and the end zipper tooth (31E) at one end of the zipper tooth row of the other, a spacer (S1) disposed on the side edge of the fabric tape in a state where the core cord (32) is exposed without the zipper tooth row (30A, 30B) is provided, forming at least a spacing (P) between adjacent zipper teeth (31).

2. The zipper according to claim 1, wherein, A locking piece (93) is provided at the front end of the pin, extending in the width direction and locking onto the rear surface of the housing. The side surface (62a) on one side of the width direction of the box bar and the side surface (81a) on one side of the width direction of the insertion space portion of the box body, together with the front surface (68) of the box body disposed between the two, form a stepped shape. The side of the pin in the width direction is formed into a stepped shape, so that when the locking piece is locked to the lower surface of the box body, it contacts the side of the box bar in the width direction and the front surface of the box body.

3. The zipper according to claim 1 or 2, wherein, The insertion portion causes the side (81b) forming the insertion space portion to be inclined in a manner that tends toward the width direction side as it moves from the front to the rear along the length direction of the zipper tape.

4. The zipper according to any one of claims 1 to 3, wherein, The zipper is a concealed zipper in which the opposing side edges of the pair of zipper tapes are bent into a U-shape and the zipper teeth are sewn to the bent back flap (22) of the side edges of the pair of zipper tapes. The pin is injection molded into the core cord (32) inserted into the zipper teeth of the other zipper tooth row and the bend of the zipper tape (20B) of the other zipper.

5. The zipper according to claim 4, wherein, The pin has: a main body (91) that houses the zipper tape of the other party; and a thin-walled portion (92) that is disposed on the side from which the zipper tape extends in the width direction from the main body and is thinner than the main body by cutting off the side from which the zipper tape extends.

6. The zipper according to any one of claims 1 to 5, wherein, A front-side upright wall (70) and a side upright wall (71) are formed in the mounting portion of the housing. The front-side upright wall (70) extends forward from the front surface of the housing on the surface of the housing. The side upright wall (71) extends forward from the front surface of the housing in a manner that connects the side surface of the housing bar to the front-side upright wall. When the rear opening of the pull head (40) abuts against the front surface of the box body, the front upright wall, the side upright wall and the box bar surround the inward portion of the width direction of the first flange with an L-shaped cross section formed by the pull head.

7. The zipper according to any one of claims 1 to 6, wherein, The length of the interval is set such that when the rear opening of the zipper pull (40) abuts against the front surface of the housing and the pin (90) is held in the insertion space (81) of the housing (61), the end zipper teeth are located on the shoulder side of the parallel part (48), which is a parallel part extending from the rear opening of the first flange (43) erected on the left and right side edges of the zipper pull (40).

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