zipper

Abstract

The zipper (10) opening and closing component (60) includes: a housing (61) disposed at one end of the zipper tape of one zipper tooth row (30A) along its length, having a surface (63), a back surface (64), and a pair of side surfaces (65, 66); and a box bar (62) fixed to the housing (61) and protruding forward from one side of the housing (61) along its width. The housing (61) has a mounting portion (67) disposed on one side of its width and mounting one zipper tape (20A), and a retaining portion (80, 80A) disposed on the other side of its width and capable of retaining one end of the other zipper tooth row (30B). The retaining portion (80, 80A) has a locking piece (90) protruding from the surface side to the back surface side and a stop wall (91) spaced apart from the locking piece (90) along the length of the zipper tape. The engaging head (31a) of the end zipper tooth (31E) of the other zipper tooth row (30B) located at one end can be held between the locking piece (90) and the stop wall (91).

Description

Technical Field

[0001] This invention relates to zippers with opening and closing mechanisms. 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 pin even when using a large zipper pull, thereby improving operability when connecting the opening and closing parts and when pulling up the zipper pull.

[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 opening / closing component includes:

[0022] A housing, disposed at one end of the zipper tape of one of the pair of zipper teeth rows in the longitudinal direction, has a surface, a back surface, and a pair of side surfaces; and

[0023] A box rod, fixed to the box body, protruding forward from one side of the box body along its width.

[0024] The case has a mounting portion and a retaining portion. The mounting portion is located on one side of the case in the width direction and mounts the zipper tape of that side. The retaining portion is located on the other side of the case in the width direction and is capable of retaining one end of the zipper teeth of the other pair of zipper teeth.

[0025] The retaining part has a locking tab protruding from the front side to the back side and a stop wall spaced apart from the locking tab along the length of the zipper tape.

[0026] The engaging head of the end zipper tooth of the other zipper tooth row located at one end can be held between the locking plate and the stop wall.

[0027] (2) According to the zipper described in (1), where,

[0028] 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.

[0029] The retaining part has an insertion space for inserting one end of the zipper teeth of the other zipper tooth row.

[0030] The retaining portion receives the folded-back portion of the other zipper tape in the insertion space and has a slit that opens the insertion space to the surface of the case, so that the main body of the other zipper tape faces the surface of the case on the other side in the width direction.

[0031] The opposing wall portion on one side of the width direction forming the slit has an inclined surface that slopes toward the other side of the width direction as it faces one end of the zipper tape in the length direction.

[0032] (3) According to the zipper described in (2), where,

[0033] The surface of the housing is formed in a stepped manner such that the surface on one side of the slit in the width direction bulges out in the back direction relative to the other side of the slit in the width direction.

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

[0035] The locking plate has an inclined surface that gradually protrudes from the surface side to the back side as it moves toward the stop wall, and...

[0036] The rear surface of the locking plate has a stepped surface on the other side in the width direction, which shortens the distance between the locking plate and the stop wall.

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

[0038] An opening is provided on the back of the housing, extending up to a position higher than the rear surface of the locking plate.

[0039] (6) According to the zipper described in (1), wherein,

[0040] The retaining plate and the stop wall of the retaining part are located in front of the front surface of the housing.

[0041] Invention Effects

[0042] According to the present invention, instead of a pin, the zipper teeth of the other zipper tooth row are continuously formed to one end of the other zipper tooth row. Thus, even when using a large zipper head, one end of the other zipper tooth row can smoothly pass through the zipper head, be inserted into and held in the insertion space of the housing, thereby improving operability when connecting the opening and closing parts and when pulling up the zipper head. Attached Figure Description

[0043] Figure 1 This is a perspective view of a car seat using the concealed zipper of this embodiment.

[0044] 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.

[0045] Figure 3 (a) is the front view of the slider. Figure 3 (b) is a side view viewed from the rear opening side of the pull head.

[0046] Figure 4 (a) is a surface view of a concealed zipper showing the zipper pull, opening / closing mechanism, and zipper teeth in the pull-up starting position with the zipper pull pulled up from the opening / closing mechanism. Figure 4 (b) is a sectional view along line IV-IV of Figure (a). Figure 4 (c) is Figure 4 (a) A cross-sectional view along line IV'-IV'.

[0047] 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.

[0048] 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 side view. Figure 6 (c) is its rear view.

[0049] Figure 7 yes Figure 6 (c) is a sectional view along line VII-VII.

[0050] Figure 8 It is a perspective view of the zipper tape of one side of the box body and box bar, viewed from the back side, with the zipper tape indicated by dashed lines.

[0051] Figure 9 It is a perspective view of the zipper tape of one side of the box body and box bar, viewed from the surface side, with the zipper tape indicated by dashed lines.

[0052] Figure 10 (a) is a front view of one end of a pair of zipper tapes in a connected state, excluding the zipper tape itself. Figure 10 (b) is its side view. Figure 10 (c) is its rear view.

[0053] Figure 11 yes Figure 10 (c) Enlarged view of part XI.

[0054] Figure 12 (a) is a rear view of one end of a pair of zipper straps with opening and closing mechanisms in a modified concealed zipper. Figure 12 (b) is Figure 12 (a) A sectional view along line XII-XII. Detailed Implementation

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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 disposed at one end of the pair of zipper straps 11A and 11B along the length of the zipper fabric, 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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 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 peripheral edge 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 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.

[0067] 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.

[0068] 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.

[0069] According to the concealed zipper 10 obtained in this way, when the zipper head 40 slides and the left and right zipper teeth 30A and 30B are engaged, the left and right fabric tape bends 23 align with each other, and the restricting member 13 presses against the inner surface of the fabric tape bends 23, thus stably maintaining the left and right fabric tape bends 23 in an aligned state. Therefore, the engaged left and right zipper teeth 30A and 30B can be hidden from the exposed sides of the zipper fabric tapes 20A and 20B by the aligned left and right fabric tape bends 23.

[0070] 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.

[0071] In addition, such as Figures 4-6 As shown, the opening / closing member 60 has a housing 61 and a housing bar 62 disposed at one end of one of the left and right zipper tooth rows 30A and 30B, namely the zipper tooth row 30A. On the other hand, one end of the other of the left and right zipper tooth rows 30A and 30B, namely the zipper tooth row 30B, replaces the pin, and the zipper tooth 31 and the core rope 32 are continuously formed together to the front end.

[0072] That is, relative to one zipper tooth row 30A, the lengths of the zipper teeth 31 and the core cord 32 of the other zipper tooth row 30B are longer.

[0073] It should be noted that, in Figure 4 For simplicity, the left and right zipper tapes 20A and 20B with the tape bent portions 23 in the width direction are shown in the following diagram when the left and right zipper teeth 30A and 30B are engaged.

[0074] 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.

[0075] The housing 61 has: a mounting part 67, which is provided on one side in the width direction to mount a zipper tape 20A on one side; and a retaining part 80, which is provided on the other side in the width direction to retain one end of the zipper teeth 30B on the other side.

[0076] The retaining part 80 has an insertion space 81 located behind the front surface 68 of the housing 61, for inserting the zipper tooth 31 and the core cord 32 at one end of the zipper tooth row 30B of the other.

[0077] In addition to the zipper teeth 31 and the core cord 32, the retaining part 80 in the insertion space part 81 also accommodates the folded-back part 22 of the other zipper tape 20B. On the other hand, it has a slit 84 that opens the insertion space part 81 to the surface 63 of the box body 61, so that the main body part 21 of the other zipper tape 20B faces the surface 63b of the other side of the box body 61 in the width direction.

[0078] The surface 63 of the housing 61 is formed in a stepped manner, such that the surface 63a on the side of the slit 84 in the width direction bulges outward in the front-back direction from the surface 63b on the other side of the slit 84 in the width direction. Furthermore, in order to limit the front-back position of the housing 61 relative to the zipper pull 40, the surface 63 of the housing 61 has a front-side raised wall 70 that extends forward beyond the front surface 68 abutted by the rear opening of the zipper pull 40. Additionally, in the housing 61, the opposing wall portion 85 on the width direction side forming the slit 84 is formed to extend forward beyond the front surface 68, thus communicating between the box bar 62 and the front-side raised wall 70 on the width direction side.

[0079] like Figure 4 As shown, the box body 61 and the box bar 62 are injection molded from one end of the core cord 32 of one zipper tooth row 30A and one end of the zipper tape 20A. That is, the end of the core cord 32 of one zipper tooth row 30A is inserted into the interior of the box bar 62, and one end of the zipper tape 20A is connected to the surface upright wall 70 and the opposing wall portion 85 on one side of the box body 61 in the width direction, and the interior of the box bar 62 (see reference). Figure 9 It should be noted that the opposing wall portion 85 extends forward compared to the side of the upright wall 70 in the width direction. Furthermore, in front of the box bar 62, there is a spacer SA installed on the folding-back portion 22 with the core rope 32 exposed and without zipper teeth 31 (see reference). Figure 5 That is, the area between the end zipper tooth at the front end of one end of the zipper tooth row 30A and the box bar 62 constitutes the spacer SA.

[0080] On the other hand, the main body 21 of the zipper tape 20B is located on the exposed side flush with the main body 21 of the zipper tape 20A. The surface 63b of the other side of the box body 61 in the width direction, including the surface upright wall 70, is formed to be thinner than the surface 63a of the box body 61 in the width direction (see reference). Figure 4 (c) and Figure 10 (a) When the zipper teeth 31, core cord 32 and fold-back portion 22 of the other zipper tooth row 30B are received in the insertion space portion 81, the surface 63b of one side of the box body 61 in the width direction is covered by the zipper tape 20B of the other side.

[0081] It should be noted that in the spacer portion SA, when the rear opening of the zipper pull 40 abuts against the front surface 68 of the housing 61, the front end of the spacer portion SA extends beyond the parallel portion 48 of the zipper pull 40 and is located in the inclined portion 49 or the straight portion 50. The parallel portion 48 is the position where the left and right zipper teeth 31 begin to engage. At this position, the fabric strip 11A on one side has the spacer portion SA, so that it will not interfere with the zipper teeth 31 on the other side, allowing the zipper pull 40 to be easily inserted, and preventing an unsuitable sticking sensation when inserting the zipper pull 40.

[0082] Furthermore, the opposing wall portion 85 on one side of the width direction forming the slit 84 has an inclined surface 86 that slopes towards the other side of the width direction as it approaches one end of the zipper tapes 20A and 20B in the length direction, and straight surfaces 87 and 88 in the front and rear directions relative to the inclined surface 86. Thus, when connecting one end of a pair of zipper tapes 11A and 11B using the opening and closing member 60, as described later, the insertion of one end of the other zipper tape 20B is guided by the opposing wall portion 85 on one side of the width direction and the opposing wall portion 89 on the other side of the width direction.

[0083] In addition, such as Figure 7 As shown, the retaining part 80 has a locking piece 90 protruding from the surface side to the back side and a stop wall 91 spaced apart from the locking piece 90 along the length direction of the zipper tape. The locking piece 90 and the stop wall 91 are locked together, holding the engaging head 31a of the end zipper tooth 31E of the other zipper tooth line 30B located at one end in the space S between the locking piece 90 and the stop wall 91. That is, with one end of the other zipper tooth line 30B restricted by the inner wall surface of the insertion space part 81 along the front and back directions, the engaging head 31a of the end zipper tooth 31E is held in the space S.

[0084] The locking piece 90 is formed on the inner wall surface of the insertion space 81 on the other side of the width direction relative to the slit 84, for locking the engagement head 31a of the end zipper tooth 31E of the other zipper tooth row 30B.

[0085] The locking piece 90 has a bevel 92 that gradually protrudes from the surface side to the back side as it moves toward the stop wall 91. When one end of the other zipper tooth row 30B is inserted into the insertion space 81, the bevel 92 guides the engaging head 31a of the end zipper tooth 31E toward the space S, and prevents interference between the engaging head 31a of the end zipper tooth 31E and the engaging head 31a of the zipper tooth 31 adjacent to the end zipper tooth 31E while the engaging head 31a of the end zipper tooth 31E is held in the space S.

[0086] In addition, such as Figure 11As shown in the magnified view, the rear surface 93 of the locking plate 90, together with the front surface of the stop wall 91, is formed parallel to the front surface 68 of the housing 61. Furthermore, a stepped surface 93a is provided on the other side in the width direction, shortening the distance between the locking plate 90 and the stop wall 91. Through the stepped surface 93a, the distance between the locking plate 90 and the stop wall 91 is smaller than the longitudinal dimension of the engagement head 31a of the end zipper tooth 31E, preventing the engagement head 31a from disengaging from the area between the locking plate 90 and the stop wall 91.

[0087] It should be noted that, as Figure 7 As shown, considering the insertability of one end of the zipper tooth row 30B of the other party, the width W1 of the inner wall surface in the back direction of the insertion space 81 is formed to be larger than the maximum cross-sectional dimension W of the engaging head 31a of the end zipper tooth 31.

[0088] Furthermore, considering the insertion of the engagement head 31a and the locking sensation generated when it passes the locking plate 90 and contacts the stop wall 91, the distance D between the front end of the locking plate 90 and the inner wall of the insertion space 81 is designed to be smaller than the maximum cross-sectional dimension W of the engagement head 31a. On the other hand, the distance D is designed to be larger than the minimum cross-sectional dimension H of the engagement head 31a, so that the engagement head 31a can pass over the locking plate 90 and disengage from the locking plate 90 and the stop wall 91. It should be noted that the minimum cross-sectional dimension H can also take into account the elastic deformation of the engagement head 31a. The distance D is an important dimension during insertion. When the engagement head 31a passes over the locking plate 91, a torsion occurs in the engagement head 31a. Due to the torsion, the engagement head 31a can pass through the distance D, and the torsion becomes a resistance when passing over the locking plate 91, increasing the locking sensation after insertion. When disengaging, the engaging head 31a will not disengage under a load that pulls the zipper head 40 upward, but it will disengage by directly and forcefully pulling the zipper tape 20B upward.

[0089] In addition, such as Figure 7 and Figure 10 As shown in (c), an opening 94 is provided on the back side 64 of the housing 61, extending from the rear end to a position higher than the rear surface 93 of the locking piece 90. When viewed from the rear side, the rear surface 93 of the locking piece 90, the stop wall 91, and the end zipper teeth 31E and the core cord 32 in the locked state face the opening 94. Thus, the injection molding of the housing 61 is performed with the mold inserted into the insertion space 81 and the opening 94, thereby forming the locking piece 90 within the insertion space 81.

[0090] In this concealed zipper 10 configuration, when the pair of 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 4As shown in (c), the box bar 62 is disposed in the chain guide 47, and the front end of the first flange 43 on one side of the box bar 62, which is sandwiched between the box bar 62 and the front side upright wall 70, is used to position the zipper 40 relative to the back of the box body 61.

[0091] The state in which the rear opening of the zipper pull 40 abuts against the front surface 68 of the housing 61 is the starting position for pulling up the zipper pull 40 when closing the concealed zipper 10.

[0092] In contrast to the zipper pull 40 in the pull-up starting position and the housing 61, the zipper tooth 31 and core cord 32 at one end of the other zipper tooth row 30B are inserted into the tooth guide 47 of the other zipper pull 40 and then housed in the insertion space 81 of the housing 61. Furthermore, the engaging head 31a of the end zipper tooth 31E of the other zipper tooth row 30B moves rearward past the locking plate 90 and remains in the space S between the locking plate 90 and the stop wall 91. At this time, the engaging head 31a of the end zipper tooth 31E passing past the locking plate 82 provides the operator with a locking sensation.

[0093] Here, because the zipper teeth 31 and core cord 32 at one end of the zipper tooth row 30B are more flexible than conventional pins, they can easily pass through the tooth guide 47 even when the parallel portion 48 of the first flange 43 is long. Furthermore, a limiting member 13 can be provided at the fold-back portion 22 of the zipper tape 20B, in which case the flexibility to pass through the tooth guide 47 can be maintained, and a posture that allows for smooth movement within the tooth guide 47 can be preserved.

[0094] Furthermore, one end of the other zipper tooth 30B is inserted into the insertion space 81 with the locking piece 90 facing it. Correspondingly, the folded portion 23 of the other zipper tape 20B passes through the slit 84 of the housing 61. At this time, the folded portion 23 contacts the inclined surface 86 of the opposing wall 85, and the other zipper tape 20B is pressed against the opposing wall 89 on the other side of the width direction by the inclined surface 86. Moreover, while the other zipper tape 20B is pressed against the opposing wall 89, the engaging head 31a of the end zipper tooth 31E passes over the locking piece 90, so the position of the end zipper tooth 31E during insertion is stable, and a reliable snap-fit ​​feeling is easily obtained.

[0095] In particular, since the retaining plate 90 has a bevel 92, the engaging head 31a of the end zipper tooth 31 can be guided towards the front end of the retaining plate 90 and the inner wall surface of the insertion space 81.

[0096] In addition, by using the straight surface 87 located in front of the inclined surface 86, the other zipper tooth row 30B is guided together with the other zipper tape 20B, thus preventing the zipper tooth 31 other than the end zipper tooth 31E from interfering with a part of the housing 61 and causing an inappropriate snapping feeling before the end zipper tooth 31E is inserted.

[0097] Furthermore, while the engagement head 31a of the end zipper tooth 31E of the other zipper tooth row 30B is held between the locking plate 90 and the stop wall 91, since the rear surface 93 of the locking plate 90 has a stepped surface 93a, when the zipper head 40 is pulled up, even when a force moving in the width direction is applied to the end zipper tooth 31E, the end zipper tooth 31E can be prevented from falling off the locking plate 90.

[0098] It should be noted that the core cord 32 of the other zipper tooth row 30B only needs to be formed to a position that ensures the rigidity of the end zipper tooth 31E. In this embodiment, for example... Figure 11 As shown, it is formed at a position further back than the stop wall 91.

[0099] It should be noted that the present invention is not limited to the structure illustrated in the above embodiments, and appropriate modifications can be made without departing from the spirit of the present invention.

[0100] For example, it can be like Figure 12 As shown, the retaining part 80A of the housing 61A is located in front of the front surface 68, and a locking piece 90 and a stop wall 91 are formed adjacent to the housing bar 62 in the width direction, thereby holding the engaging head 31a of the end zipper tooth 31E in the space S between the locking piece 90 and the stop wall 91.

[0101] It should be noted that, although not shown in the figure, when the zipper pull 40 is in the pull-up start position relative to the housing 61, the locking piece 90 and the stop wall 91 of the holding part 80 are formed in the range of the parallel part 48 in the length direction of the zipper tapes 20A and 20B in the zipper tooth guide path 47 in a manner that does not interfere with the guide post 44.

[0102] In this case, without the insertion space portion of the above embodiment provided in the holding portion 80A of the housing 61A, and with the engaging head 31a of the end zipper tooth 31E held between the locking piece 90 and the stop wall 91, the end zipper tooth 31E and core cord 32 of the other zipper tooth row 30B are located further forward than the front surface 68 of the housing 61A. Therefore, the zipper tape 20B extends rearward beyond the end zipper tooth 31E and core cord 32 of the other zipper tooth row 30B, forming the same length as the zipper tape 20A. It should be noted that the rear end positions of the zipper tape 20A and zipper tape 20B may be different.

[0103] In addition, in this modified example, although no insertion space is provided in the holding part 80A, since the zipper teeth 31 and core cord 32 of the other zipper tooth row 30B are installed in the fold-back piece 22 of the zipper tape, the position of the zipper teeth 31 in the front and back directions is restricted, so that the engaging head 31a of the end zipper teeth 31E can be held in the space S between the locking piece 90 and the stop wall 91.

[0104] It should be noted that, in this modified example, when the core cord 32, the folded-back portion 22 of the zipper tape 20B, and the surface of the zipper tape 20B are located behind the end zipper teeth 31E, an insertion space may also be provided.

[0105] The other structures and functions are the same as those in the above-described embodiments.

[0106] Furthermore, while the invention is described using a concealed zipper in the above embodiments, it can also be applied to zippers other than concealed zippers.

[0107] As stated above, the following matters are disclosed in this specification.

[0108] (1) A zipper, the zipper comprising:

[0109] 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

[0110] 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.

[0111] in,

[0112] The opening / closing component includes:

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

[0114] A box rod, fixed to the box body, protruding forward from one side of the box body along its width.

[0115] The case has a mounting portion and a retaining portion. The mounting portion is located on one side of the case in the width direction and mounts the zipper tape of that side. The retaining portion is located on the other side of the case in the width direction and is capable of retaining one end of the zipper teeth of the other pair of zipper teeth.

[0116] The retaining part has a locking tab protruding from the front side to the back side and a stop wall spaced apart from the locking tab along the length of the zipper tape.

[0117] The engaging head of the end zipper tooth of the other zipper tooth row located at one end can be held between the locking plate and the stop wall.

[0118] According to this structure, instead of a pin, the zipper teeth of the other zipper tooth row are continuously formed to one end of the other zipper tooth row. Thus, even when using a large zipper head, one end of the other zipper tooth row can smoothly pass through the zipper head, be inserted into and held in the insertion space of the housing, thereby improving operability when connecting the opening and closing parts and when pulling up the zipper head.

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

[0120] 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.

[0121] The retaining part has an insertion space for inserting one end of the zipper teeth of the other zipper tooth row.

[0122] The retaining portion receives the folded-back portion of the other zipper tape in the insertion space and has a slit that opens the insertion space to the surface of the case, so that the main body of the other zipper tape faces the surface of the case on the other side in the width direction.

[0123] The opposing wall portion on one side of the width direction forming the slit has an inclined surface that slopes toward the other side of the width direction as it faces one end of the zipper tape in the length direction.

[0124] With this structure, the inclined surface guides the zipper tape on one side while inserting one end of the zipper teeth row on the other side toward the locking piece. As a result, the insertion position of the end zipper teeth is stable and a reliable snap-fit ​​feeling is easily obtained.

[0125] (3) According to the zipper described in (2), where,

[0126] The surface of the housing is formed in a stepped manner such that the surface on one side of the slit in the width direction bulges out in the back direction relative to the other side of the slit in the width direction.

[0127] According to this structure, when the end zipper teeth are inserted, the operator can pinch the main body of the zipper tape on the other side of the surface through the slit, which can improve the operability of the concealed zipper.

[0128] (4) Based on any one of the zippers described in (1) to (3), where,

[0129] The locking plate has an inclined surface that gradually protrudes from the surface side to the back side as it moves toward the stop wall, and...

[0130] The rear surface of the locking plate has a stepped surface on the other side in the width direction, which shortens the distance between the locking plate and the stop wall.

[0131] According to this structure, the inclined surface guides the end zipper teeth into the space between the locking plate and the stop wall, and prevents interference with the engagement heads of adjacent zipper teeth while maintaining the engagement heads of the end zipper teeth. Furthermore, by providing a stepped surface on the rear surface of the locking plate, when the zipper head is pulled up, even when a force is applied to the end zipper teeth to move in the width direction, it is possible to prevent the end zipper teeth from dislodging from the locking plate.

[0132] (5) According to the zipper described in (4), wherein,

[0133] An opening is provided on the back of the housing, extending up to a position higher than the rear surface of the locking plate.

[0134] According to this structure, the injection molding of the housing is carried out with the mold inserted from the insertion space and the opening, and the locking piece can be easily formed in the insertion space.

[0135] (6) According to the zipper described in (1), wherein,

[0136] The retaining plate and the stop wall of the retaining part are located in front of the front surface of the housing.

[0137] Therefore, we can also consider setting the structure to be like this for purposes, etc.

[0138] Explanation of reference numerals in the attached figures

[0139] 10. Concealed zipper (zipper)

[0140] 11A, 11B Zipper Chain

[0141] 20A, 20B Zipper Tape

[0142] 21. Main body of the fabric tape

[0143] 22 Return to the film section

[0144] 23. Fabric tape bend

[0145] 24. Side edge of the fabric tape

[0146] 30A and 30B zipper teeth

[0147] 31 Zipper teeth

[0148] 31E end zipper teeth

[0149] 32-core rope

[0150] 40 zipper pull

[0151] 41. Pull-out body

[0152] 42 Lower wing plate

[0153] 43 First flange

[0154] 44 guide pillars

[0155] 45 Second flange

[0156] 60 opening and closing parts

[0157] 61 Box

[0158] 62 boxes of rods

[0159] 63 Surface

[0160] 64 Back

[0161] Side views at 65 and 66

[0162] 67 Installation Department

[0163] 70 Side-mounted wall

[0164] 80, 80A Holding Section

[0165] 81 Insertion Space Section

[0166] 84 Slits

[0167] 85, 89 Opposite Walls

[0168] 86 Inclined surface

[0169] 90 Cadence tablets

[0170] 91 Carding Wall

[0171] 92 bevel

[0172] 93a Stepped surface

[0173] 94 Opening

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 opening / closing component includes: A housing (61), disposed at one end of the zipper tape of one of the pair of zipper teeth rows in the longitudinal direction, has a surface (63), a back surface (64), and a pair of side surfaces (65, 66); and 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. The housing has a mounting portion (67) and a retaining portion (80, 80A). The mounting portion is located on one side of the housing in the width direction and mounts the zipper tape of that side. The retaining portion is located on the other side of the housing in the width direction and is capable of retaining one end of the zipper teeth of the other pair of zipper teeth. The retaining part has a locking piece (90) protruding from the surface side to the back side and a stop wall (91) spaced apart from the locking piece along the length of the zipper tape. The engaging head (31a) of the end zipper tooth (31E) of the other zipper tooth row located at one end can be held between the locking piece and the stop wall.

2. The zipper according to claim 1, 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 retaining part (80) has an insertion space (81) for inserting a zipper tooth (31) at one end of the zipper tooth row of the other party. The retaining part receives the folded-back portion of the other zipper tape in the insertion space and has a slit (84) that opens the insertion space to the surface of the case, so that the main body of the other zipper tape faces the surface of the case on the other side in the width direction. The opposing wall portion (85) on one side of the width direction forming the slit has an inclined surface (86) that slopes toward the other side of the width direction as it moves toward one end of the zipper tape in the length direction.

3. The zipper according to claim 2, wherein, The surface of the housing is formed in a stepped manner such that the surface on one side of the slit in the width direction bulges out in the back direction relative to the other side of the slit in the width direction.

4. The zipper according to any one of claims 1 to 3, wherein, The locking plate has a bevel (92) that gradually protrudes from the surface side to the back side as it moves toward the stop wall, and, The rear surface (93) of the locking plate has a stepped surface (93a) on the other side in the width direction, which shortens the distance between the locking plate and the stop wall.

5. The zipper according to claim 4, wherein, An opening (94) is provided on the back of the housing, extending up to a position higher than the rear surface of the locking plate.

6. The zipper according to claim 1, wherein, The retaining part (80A) has a locking plate and a stop wall located in front of the front surface of the housing.

Images