Zippered product and method of manufacturing a zippered product

Abstract

The present application provides a kind of zipped product capable of preventing or inhibiting zipper tape exposed between zipper and zipper installation component.In the zipped product, zipper chain tape is installed on the tooth chain tape installation edge of zipper installation component by sewing part, the sewing part is formed by sewing thread containing upper thread and lower thread, the sewing part includes a plurality of interlacing parts, the plurality of interlacing parts penetrate through tooth chain tape installation edge and zipper tape and are formed by the intersection of upper thread and lower thread, zipper chain tape has gap region defined by the maximum interval on zipper tape between zipper and alternate range configured by alternately arranging zipper chain region provided with zipper chain, and the interlacing part of sewing part is only arranged in gap region in alternate range.

Description

Technical Field

[0001] This invention relates to a product with a zipper and a method for manufacturing such a product. Background Technology

[0002] For example, International Publication No. 2017 / 094145 (Document 1) describes a water-resistant zipper. To put it simply, the zipper described in Document 1 includes: a pair of left and right zipper teeth forming a row of teeth; and a zipper pull that is slidably mounted to the left and right rows of teeth.

[0003] Each zipper belt includes: a zipper belt (belt component); and a plurality of zipper teeth disposed on the side edge of the zipper belt. The zipper belt includes: a belt body, which is narrow and waterproof and breathable; and a core cord portion disposed on the side edge of the belt body. The zipper belt has the property of inhibiting liquid from seeping into the back side of the zipper belt from the surface side. Summary of the Invention

[0004] When the zipper described in Document 1 is installed on a product such as clothing or a bag, for example, the zipper tape of the zipper teeth is sewn with the zipper mounting component (e.g., the fabric of the clothing) of the product in a state where the zipper tape is aligned with the zipper mounting component of the product.

[0005] In traditional sewing processes, the zipper tape and the zipper mounting portion of the zipper assembly are typically inserted between the needle plate and presser foot of the sewing machine with their surfaces overlapping, thereby sewing the zipper tape and the zipper mounting edge together. In this case, considering the positional relationship between the presser foot and the needle and the zipper teeth of the zipper tape during sewing, the sewing needle needs to reciprocate up and down in the tape width direction away from the zipper teeth to pierce the zipper tape. As a result, a sewn section is formed in the tape width direction away from the zipper teeth, creating a seam that joins the zipper tape and the zipper assembly, thus the zipper tape is positioned to protrude between the zipper teeth and the zipper assembly.

[0006] Thus, when the zipper tape is exposed between the zipper teeth and the zipper mounting components, in order to make the zippered product waterproof or water-resistant, not only the fabric of the zipper mounting components needs to be waterproof or water-resistant, but the zipper tape also needs to have waterproof or water-resistant properties such as the waterproof and breathable properties described in Document 1. However, to impart waterproof or water-resistant properties to the zipper tape, specialized equipment or materials are required, which leads to problems such as increased manufacturing costs and increased complexity in manufacturing processes.

[0007] In addition, in products with zippers, the zipper is sometimes considered as a design element. Therefore, to improve the design or appearance of products with zippers, it is sometimes required that the zipper tape be invisible or difficult to see.

[0008] The present invention was made in view of the above-mentioned problems, and its object is to provide a zippered product that can prevent or suppress the zipper tape from being exposed between the zipper teeth and the zipper mounting component, and a method for manufacturing the zippered product.

[0009] To achieve the above objectives, the zippered product of the present invention includes: a zipper tooth tape having a plurality of zipper teeth arranged at certain intervals; and a zipper mounting member having a pair of tooth tape mounting edges arranged facing each other for mounting a pair of the zipper tooth tapes, wherein the zipper tooth tapes are mounted to the tooth tape mounting edges by a sewing portion, the sewing portion being formed by a stitch including an upper thread and a lower thread, the sewing portion including a plurality of interlacing portions that penetrate the tooth tape mounting edges and the zipper tape and are formed by the intersection of the upper thread and the lower thread, the zipper tooth tape having an alternating range in the length direction of the zipper tooth tape, the alternating range being formed by alternating gap areas defined by the maximum interval on the zipper tape between adjacent zipper teeth in the length direction and tooth areas provided with the zipper teeth and formed between the gap areas, the interlacing portions being provided only in the gap areas in the alternating range.

[0010] In the zippered product of the present invention, it is preferable that the sewn portion is formed in a straight or substantially straight shape along the length direction of the zipper teeth.

[0011] In addition, it is preferable that the sewn part contacts at least a portion of the zipper teeth in the zipper tooth area.

[0012] Furthermore, the zipper teeth preferably include: a first tooth portion fixed to a first surface of the zipper tape; and a second tooth portion fixed to a second surface of the zipper tape, wherein the first tooth portion and the second tooth portion each include at least: a main body fixed to the zipper tape; and a wing portion extending outward from the main body portion toward the width direction of the tape, and having a dimension in the front and back direction of the tape portion smaller than that of the main body portion.

[0013] In this invention, preferably when viewed in a cross section orthogonal to the length direction, the zipper belt mounting edge includes: a bent portion that is bent into a U-shape such that a portion of the sewn portion is wrapped inside the zipper belt mounting edge; and a first side edge and a second side edge that extend from the bent portion along the zipper belt, the bent portion being fixed by the sewn portion at a position in contact with the zipper teeth.

[0014] Next, the manufacturing method of the zippered product of the present invention manufactures a zippered product in which the zipper teeth are respectively mounted on the mounting edges of the zipper teeth at opposite positions on the mounting edges of the zipper tape by using a sewing machine to sew a zipper tooth tape having a plurality of zipper teeth arranged at certain intervals to a pair of tooth tape mounting edges disposed on the zipper mounting member. The manufacturing method of the zippered product includes:

[0015] In the sewing process, a sewing part is formed using the thread of the sewing machine, which includes an upper thread and a lower thread, comprising multiple interlaced portions that pass through the zipper tape mounting edge and the zipper tape and are formed by the intersection of the upper thread and the lower thread; and

[0016] During the formation of the sewn portion, in the length direction of the zipper tooth tape, within an alternating range of gap areas defined by the maximum interval on the zipper tape and tooth areas formed between the gap areas and where the zipper teeth are provided, the process of providing the interlacing portion only in the gap areas; and

[0017] The process of sewing the zipper teeth to the mounting edge of the teeth through the formed sewing section.

[0018] In the manufacturing method of the present invention, it is preferable to include a step in which the sewn portion is formed in a straight or substantially straight shape along the length direction of the zipper teeth during the sewing process.

[0019] Furthermore, in the manufacturing method of the present invention, it is preferable to include a step of forming the sewn portion in such a way that it contacts at least a portion of the zipper teeth in the zipper tooth area.

[0020] The manufacturing method of the present invention preferably includes: a step of conveying the zipper tooth belt and the zipper mounting member together by rotating a conveyor gear provided on the sewing machine in the sewing process by engaging and rotating the zipper teeth of the zipper tooth belt; and a step of sewing the conveyed zipper tooth belt to the mounting edge of the tooth belt by raising and lowering the sewing machine needle of the sewing machine according to the rotation of the conveyor gear.

[0021] Furthermore, in the manufacturing method of the present invention, it is preferable to include: after sewing the zipper chain strap to the chain strap mounting edge via the sewing portion, bending the chain strap mounting edge into a U-shape at the location where the sewing portion is formed, such that a portion of the sewing portion is wrapped inside.

[0022] Invention Effects

[0023] According to the present invention, a zippered product is provided that can prevent or suppress the zipper tape from being exposed between the zipper teeth and the zipper mounting component. Attached Figure Description

[0024] Figure 1 This is a schematic top view illustrating an embodiment of the zippered product according to the present invention.

[0025] Figure 2 It is Figure 1 The image shown is a schematic three-dimensional view of a portion of the product with a zipper, magnified.

[0026] Figure 3 It is Figure 1 The diagram shows a schematic top view of a portion of the zippered product, magnified.

[0027] Figure 4 It is Figure 1 The image shows a portion of the zippered product, schematically shown from below after being enlarged.

[0028] Figure 5 yes Figure 3 The cross-sectional view at the VV line shown.

[0029] Figure 6 This is a perspective view schematically showing the main parts of the sewing machine used in the embodiment.

[0030] Figure 7 It is shown schematically. Figure 6 The diagram shows the relationship between the sewing machine needle, presser foot, and feed gear of a sewing machine.

[0031] Figure 8 This is a schematic cross-sectional view of the main parts of the sewing machine, the zipper teeth, and the zipper mounting components during the sewing process, viewed from the upstream side of the conveying direction.

[0032] Figure 9 This is a schematic cross-sectional view illustrating a portion of a zippered product according to a variation of the present invention.

[0033] Figure 10 This is a bottom view schematically illustrating a portion of a zippered product according to another variation of the invention.

[0034] Explanation of reference numerals in the attached figures

[0035] 1. Products with zippers (clothing with zippers)

[0036] 2. Zipper installation components (fabric)

[0037] 3. Toothed chain belt mounting edge (opposite side edge)

[0038] 3a First lateral edge

[0039] 3b Bending section

[0040] 3c Second lateral edge

[0041] 5. Sewing Section

[0042] 5a Top thread (machine needle thread)

[0043] 5b - Bottom Line (Lower Limit)

[0044] 6. Interlacing section

[0045] 10 Zippers

[0046] 11, 11a Zipper teeth and chain strap

[0047] 12 Zipper Tape

[0048] 12a with main body

[0049] 12b Core Rope Section

[0050] 13 Chain teeth

[0051] 14, 14a Zipper teeth

[0052] 15 First chain tooth section

[0053] 15a First Main Cadre

[0054] 15b First wing

[0055] 15c Neck

[0056] 15d meshing head

[0057] 15e First step

[0058] 15f 1st Wing

[0059] 15g First inclined section

[0060] 16 Second chain tooth section

[0061] 16a Second Main Cadre

[0062] 16b Second wing

[0063] 16c chain tooth head

[0064] 16d, second step

[0065] 16e Second wing

[0066] 16f Second Inclined Section

[0067] 21 Chain tooth area

[0068] 22 Gap Area

[0069] 40 zipper pull

[0070] 41. Main body of the puller head

[0071] 42 Upper wing plate

[0072] 43. Tape Mounting Section

[0073] 45 Film Pull

[0074] 50 sewing machines

[0075] 51 abutment

[0076] 52 needle plate part

[0077] 52a Base section

[0078] 52b Guide groove

[0079] 52c pinhole

[0080] 52d gear opening

[0081] 53 needle bar

[0082] 54 Sewing machine needles

[0083] 55 Compression bar

[0084] 56 Sewing machine presser foot

[0085] 57. Conveyor Gear Detailed Implementation

[0086] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Furthermore, the present invention is not limited to the embodiments described below; various modifications can be made as long as the invention has a substantially the same structure and achieves the same effect.

[0087] For example, in the following embodiments, zipper teeth are disposed on the zipper tape in independent shapes by injection molding of synthetic resin, thereby forming a zipper and zipper tooth tape. However, in the present invention, instead of synthetic resin zipper teeth, a plurality of metal zipper teeth formed in independent shapes can be disposed on the zipper tape to form a zipper and zipper tooth tape.

[0088] Example

[0089] Figure 1 This is a schematic top view of the zippered product involved in this embodiment. Figure 2 , Figure 3 and Figure 4 These are schematic three-dimensional, top, and bottom views that show an enlarged portion of a product with a zipper. Figure 5 yes Figure 3 The cross-sectional view at the VV line shown.

[0090] In the following description of zippers and products with zippers, the front-back direction refers to the direction along the length of the zipper tape, which is the same direction as the sliding direction of the zipper pull (see reference). Figure 3 and Figure 4 Specifically, the direction in which the zipper pull slides when the zipper is closed is set to forward, and the direction in which the zipper pull slides when the zipper is opened is set to backward. Furthermore, the forward and backward directions correspond to the "length direction of the zipper teeth" as described in the claims.

[0091] The left-right direction refers to the width direction of the zipper tape, specifically, it is the direction orthogonal to the front-back direction and parallel to the surface and back of the zipper tape. Alternatively, the left-right direction can also refer to the direction along which the teeth of a pair of zipper teeth engage and disengage. In this case, the direction in which a pair of teeth move closer together is defined as the inner left-right direction, and the direction in which a pair of teeth move further apart is defined as the outer left-right direction (see reference). Figures 3-5 Additionally, the left and right directions correspond to the "band width direction" as described in the claims.

[0092] The up-down direction refers to the direction along the back of the zipper tape, which is orthogonal to the front-back and left-right directions (see reference). Figure 5 In particular, the direction in which the zipper is exposed when in use (e.g., the direction in which the zipper pull is positioned on the zipper tape) is designated as upward, and the opposite direction is designated as downward. Furthermore, the upward and downward directions correspond to the "tape back direction" as described in the claims.

[0093] The product 1 with zipper 10 involved in this embodiment is, for example, clothing (garment). Zipper 10 is installed at the front opening of the front body of the clothing, and at the opening and closing parts (opening perimeters) of the pockets provided on the chest and abdomen of the front body. In this case, the zipper mounting member 2 for which zipper 10 is installed is the fabric 2 of the clothing 1 (also called garment fabric). In addition, the left and right fabrics 2 forming the front body of the clothing 1 each have opposing side edges arranged facing each other, and the opposing side edges of the left and right fabrics 2 become the toothed chain mounting edge 3 for mounting the zipper toothed chain 11 of the zipper 10.

[0094] In this embodiment, the left and right fabrics 2 with the toothed chain mounting edge 3 are waterproof or water-resistant. Here, waterproofness refers to the property of preventing water from passing through or penetrating the fabric 2, and water-resistantness refers to the property of inhibiting water from passing through or penetrating the fabric 2. Furthermore, in this embodiment, there are no particular limitations on the method or manner of imparting waterproofness or water-resistantness to the fabric 2. Alternatively, the fabric 2 may also be formed without waterproofness or water-resistantness.

[0095] like Figure 5 As shown, each zipper belt mounting edge 3 provided on the left and right fabrics 2 is formed by folding the fabric 2 back at a bend 3b along the front-back direction. Specifically, the zipper belt mounting edge 3 includes: a first side edge 3a, which extends inward in the width direction from the main body of the fabric (not shown); a bend 3b, which extends from the first side edge 3a and is bent into a U-shape; and a second side edge 3c, which extends from the bend 3b and overlaps with the first side edge 3a. In this case, the second side edge 3c of the zipper belt mounting edge 3 is configured to contact the zipper belt 12 of the zipper belt 11, and the first side edge 3a is configured on the second side edge 3c away from the zipper belt 12.

[0096] The bent portion 3b of the zipper tooth mounting edge 3 is formed by bending the fabric 2 at the sewing portion 5, which sews the zipper tooth 11 to the zipper tooth mounting edge 3 of the fabric 2. Inside the bent portion 3b, a portion of the sewing portion 5 is held in a wrapped manner. Furthermore, the bent portion 3b is fixed by the sewing portion 5 at a position where it contacts the second wing 16b of the zipper tooth 14 (described later).

[0097] As described above, the sewing part 5, which sews the toothed chain mounting edge 3 and the zipper toothed chain 11 together, is arranged in a straight line along the front-back direction of the zipper chain 12 by a flat sewing process performed by a sewing machine 50 (see reference). Figure 3 and Figure 4 Furthermore, the sewing portion that joins the zipper belt mounting edge 3 and the zipper belt 11 can also be formed, as described later, by a generally straight sewing portion 5 comprising a straight portion along the front-back direction of the zipper belt 12 and a portion that is slightly bent or curved inward toward the left-right direction (see reference). Figure 10 ).

[0098] In this embodiment, the sewing section 5 is formed by a thread including the upper thread (needle thread) 5a and the lower thread (bottom thread) 5b of the sewing machine 50. Furthermore, the sewing section 5 includes multiple interlacing sections 6. Each interlacing section 6 passes through the zipper tape mounting edge 3 and the zipper tape 12 of the fabric 2 and is formed by the upper thread 5a and the lower thread 5b of the sewing thread crossing each other. In this embodiment, the interlacing sections 6 of the sewing section 5 are arranged at certain intervals in the front-to-back direction.

[0099] In this embodiment, the zipper 10 is attached to the toothed zipper mounting edge 3 of the left and right fabrics 2 of the garment 1 via a sewn portion 5 formed by stitching (see reference). Figures 3-5 The zipper 10 includes: a pair of left and right zipper strips 11, which have zipper teeth rows 13 formed on the side edges of the zipper strips 12; and a zipper pull 40, which is slidably mounted to the left and right zipper teeth rows 13.

[0100] In this embodiment, the zipper pull 40 is formed substantially the same as that described in International Publication No. 2017 / 094145 (Document 1). Here, the zipper pull 40 will be briefly described. The zipper pull 40 includes: a zipper pull body 41, which engages and disengages the left and right chain teeth 13; and a pull tab 45, which is mounted on the zipper pull body 41. The zipper pull body 41 includes: an upper wing plate 42; a lower wing plate, which is arranged parallel to the upper wing plate 42; a connecting post, which connects the front ends of the upper wing plate 42 and the lower wing plate; left and right upper flange portions, which extend from the left and right side edges of the upper wing plate 42 toward the lower wing plate; left and right lower flange portions, which extend from the left and right side edges of the lower wing plate toward the upper wing plate 42; and a pull tab mounting portion 43, which is integrally formed with the upper surface of the upper wing plate 42 for mounting the pull tab 45.

[0101] At the front end of the zipper pull main body 41, left and right shoulder openings are provided in a manner that clamps the connecting post. At the rear end of the zipper pull main body 41, a rear opening is provided. Between the upper wing plate 42 and the lower wing plate of the zipper pull main body 41, a roughly Y-shaped zipper tooth guide path is provided, communicating with the left and right shoulder openings and the rear opening. Between the upper flange and the lower flange of the zipper pull main body 41, an insertion gap is provided for the first wing 15b and the second wing 16b of the zipper tooth 14 to pass through. This insertion gap communicates with the zipper tooth guide path.

[0102] In the zipper 10 of this embodiment, each left and right zipper tooth strip 11 includes: a zipper strip 12, which is long and narrow; and a plurality of synthetic resin zipper teeth 14, which are disposed on the opposite side edge of the zipper strip 12.

[0103] Each zipper tape 12 includes: a tape body portion 12a having a tape surface and a tape back surface; and a core cord portion 12b disposed on the inner side edge of the tape body portion 12a. The core cord portion 12b is integrally disposed on the side edge of the tape body portion 12a along the tape length direction. The core cord portion 12b is formed in a manner that protrudes upward and downward relative to the tape body portion 12a.

[0104] In this embodiment, the zipper tape 12 is formed without a waterproof layer to prevent or inhibit water intrusion, and therefore lacks waterproof and water-repellent properties. Furthermore, in this invention, the structure and properties of the zipper tape, as well as the method of forming the zipper tape, are not particularly limited, and the zipper tape may also possess waterproof or water-repellent properties. For example, in this embodiment, waterproof, water-repellent, or water-repellent properties may be imparted to, for example, the core cord portion 12b of the zipper tape 12, or only to a portion of the zipper tape 12, such as the core cord portion 12b and its adjacent portions.

[0105] A plurality of synthetic resin zipper teeth 14 are provided at certain intervals along the front-to-back direction on the side edge of the zipper tape 12, thereby forming a tooth row 13. Each zipper tooth 14 is formed by injection molding synthetic resin onto the zipper tape 12. Each zipper tooth 14 is not connected to other adjacent zipper teeth 14 in the front-to-back direction, and has an independent shape separate from other zipper teeth 14.

[0106] Each zipper tooth 14 includes: a first tooth portion 15 disposed on the back side of the zipper tape 12; and a second tooth portion 16 disposed on the surface side of the zipper tape 12, having a different shape from the first tooth portion 15. In this case, the first tooth portion 15 of the zipper tooth 14 is the portion hidden on the back side of the garment 1 with the zipper 10. The second tooth portion 16 is the portion exposed on the outside of the garment 1.

[0107] like Figure 4 As shown, the first zipper tooth 15 includes: a first main body 15a, which is directly fixed to the zipper tape 12; a first wing 15b, which extends outward from the first main body 15a in a left-right direction; a neck 15c, which extends inward from the first main body 15a in a left-right direction; and an engaging head 15d, which extends further inward from the neck 15c in a left-right direction, and is generally oblong in shape in the bottom view of the zipper tooth 14.

[0108] Top view of the first main stem 15a in zipper teeth 14 ( Figure 4 It has a roughly isosceles trapezoidal shape. The neck 15c has a tapering shape in the middle so as to engage with the engaging heads 15d of the two zipper teeth 14 that are the opposite of the engaging heads.

[0109] The first wing 15b extends outward from the first main body 15a in the left-right direction, and its height is made smaller than that of the first main body 15a via the first step 15e. Here, the height of the first main body 15a and the first wing 15b refers to the vertical dimension from the back of the zipper tape 12 to the lower surface of the first main body 15a or the lower surface of the first wing 15b.

[0110] Furthermore, in each zipper tooth 14, it is preferable that the outer end face of the first wing 15b facing outward in the width direction contacts the straight stitching portion 5. That is, it is preferable that the lower thread 5b of the stitching portion 5 is positioned outward in the left-right direction compared to the first wing 15b of the zipper tooth 14. Additionally, it is preferable that the interlacing portion 6 of the stitching portion 5 is positioned outward in the left-right direction compared to the position of the first wing 15b. This prevents the stitching portion 5 (lower thread 5b) from overlapping with the first wing 15b in the vertical direction. As a result, when the zipper pull 40 slides, compared to, for example, when the stitching portion 5 (lower thread 5b) rests on the lower surface of the first wing 15b, the contact between the stitching portion 5 (lower thread 5b) and the zipper pull 40 is reduced, thus suppressing wear of the stitching portion 5 (lower thread 5b) caused by contact with the zipper pull 40. Furthermore, this makes the product 1 more aesthetically pleasing.

[0111] like Figure 2 and Figure 3 As shown, the second zipper tooth portion 16 includes: a second main body 16a, which is directly fixed to the zipper tape 12; a second wing 16b, which extends outward from the second main body 16a in a left-right direction; and a zipper tooth head 16c, which extends inward from the second main body 16a in a left-right direction. The zipper tooth head 16c has a shape in which the dimension in the length direction gradually decreases in two stages towards the tip portion of the zipper tooth head 16c.

[0112] The second wing 16b extends outward from the second main body 16a in the left-right direction, and its height relative to the zipper tape 12 is made smaller by the second step portion 16d. The outer side face of the second wing 16b in the width direction contacts the toothed zipper tape mounting edge 3 of the fabric 2. Furthermore, the contact between the second wing 16b of the zipper tooth 14 and the toothed zipper tape mounting edge 3 of the fabric 2 is maintained by a sewing portion 5 formed in a straight line along the front-back direction.

[0113] In this way, the toothed edge 3 of the fabric 2 is sewn to the zipper tape 12 by the sewing part 5 while in contact with the second wing 16b of the zipper tooth 14. As a result, the portion of the zipper tape 12 after removing a part (specifically, the portion of the zipper tape 12 disposed between the zipper teeth 14 in the front-to-back direction) can be covered by the toothed edge 3 of the fabric 2, thus preventing the zipper tape 12 from being exposed in the area between the zipper teeth 14 and the zipper mounting member 2 in the left-to-right direction.

[0114] In the zipper tooth 14 of this embodiment, the first wing 15b and the second wing 16b have shapes that are symmetrical about each other in the vertical direction with respect to the zipper tape 12. Furthermore, the first wing 15b and the second wing 16b are formed with a thickness that allows insertion into the zipper pull 40, including an interlocking gap. The first step portion 15e and the second step portion 16d of the zipper tooth 14 are formed to contact and slide against the upper flange portion and the lower flange portion of the zipper pull 40, respectively.

[0115] By providing the first wing 15b and the second wing 16b to the zipper teeth 14, even if the mounting edge 3 of the fabric 2 is held in contact with the second wing 16b of the zipper teeth 14 as described above, it is possible to prevent or suppress the upper and lower flanges of the zipper head 40 from contacting the left and right fabrics 2 when the zipper head 40 slides along the left and right zipper teeth 13. Therefore, the zipper head 40 can slide smoothly regardless of the thickness of the fabric 2.

[0116] Furthermore, each zipper tooth 14 has a first tooth portion 15 and a second tooth portion 16 as described above, thereby making it difficult for water to seep in from the upper surface side to the lower surface side of the left and right tooth rows 13 when they are engaged. In addition, in this case, water penetration is even more difficult to occur because, for example, each zipper tooth 14 has water-repellent properties.

[0117] Here, regarding the zipper tooth tape 11 of this embodiment, for example, as shown... Figure 3 and Figure 4 As indicated by the imaginary lines, in the front-back direction, the area between two adjacent zipper teeth 14 defined by the maximum interval on the zipper tape 12 is defined as the gap area 22. Furthermore, the area where zipper teeth 14 are provided and formed between the two gap areas 22 is defined as the tooth area 21. To explain more specifically, in... Figure 4 In this embodiment, the gap region 22 is the area in the front-back direction between the upper end of the outer side end face (outer side end face facing the left-right direction) of the first wing 15b and the second wing 16b of the lower zipper tooth 14 and the lower end of the outer side end face of the first wing 15b and the second wing 16b of the upper zipper tooth 14. The tooth region 21 is the area formed by two adjacent gap regions 22 in the front-back direction. In this embodiment, the tooth region 21 can also be represented as the area in each zipper tooth 14 where the outer side end face of the first wing 15b and the second wing 16b is provided. Furthermore, the gap region 22 and the tooth region 21 cover the entire left-right direction of the zipper tooth belt 11.

[0118] In this embodiment, the zipper tooth tape 11 has an alternating range in which the gap region 22 and the tooth region 21 are alternately arranged along the front-to-back direction. Within this alternating range, the interlacing portion 6 (the portion where the upper thread 5a and the lower thread 5b intersect) of the sewn portion 5 formed by the stitching is provided only in the gap region 22 and not in the tooth region 21. In this way, by forming the sewn portion 5 by providing the interlacing portion 6 only in the gap region 22, the sewn portion 5 can be formed in a straight or substantially straight shape along the front-to-back direction as described above, while contacting the first wing 15b of the zipper tooth 14 in the tooth region 21. Moreover, this allows the tooth tape mounting edge 3 of the fabric 2 to be sewn and fixed to the zipper tape 12 at the position where it contacts the second wing 16b of the zipper tooth 14 by the straight or substantially straight sewn portion 5 on the upper surface side of the zipper tape 12.

[0119] Next, the sewing method for sewing the zipper teeth 11 of the zipper 10 to the toothed edge 3 of the fabric 2 using a sewing machine 50 will be explained.

[0120] Furthermore, in the following description of the sewing machine 50 and the sewing method, the front-back direction is the transport direction of the sewing machine 50, which is the direction along which the zipper teeth 11 and the fabric 2, which are the objects to be sewn, are transported. In this case, the direction of transporting the objects to be sewn is defined as front, and the opposite direction is defined as rear. The up-down direction is the direction along which the sewing machine needle 54 reciprocates. In this case, the direction in which the sewing machine needle 54 passes through the objects to be sewn is defined as downward, and the direction in which the sewing machine needle 54 is withdrawn from the objects to be sewn is defined as upward. The left-right direction is the direction orthogonal to the transport direction of the objects to be sewn and to the direction of reciprocating motion of the sewing machine needle 54, and can also be referred to as the width direction of the sewing machine 50. In this case, the inner side of the width direction of the sewing machine 50 refers to the direction close to the post portion of the sewing machine 50 (described later) when the sewing machine needle 54 of the sewing machine 50 is used as a reference, and the outer side of the width direction of the sewing machine 50 refers to the direction away from the post portion.

[0121] like Figure 6 and Figure 7 As shown, the sewing machine 50 used in this sewing method includes: a base portion 51 for holding the object to be sewn; a post portion (not shown) that rises from the base portion 51; and an arm portion (not shown) that extends from the upper end of the post portion in a left-right direction. Additionally, the sewing machine 50 includes: a needle plate portion 52 disposed on the base portion 51; a needle bar 53 supported on the arm portion (not shown) in a manner that allows it to reciprocate in a vertical direction; and a sewing machine needle 54 held by the needle bar 53. The sewing machine 50 also includes: a presser bar 55 disposed on the arm portion (not shown); a presser foot 56 mounted on the presser bar 55; a feed gear 57 that feeds the zipper teeth 11; and a bobbin portion (not shown) disposed below the needle plate portion 52.

[0122] The pin plate portion 52 includes: a base portion 52a having a flat surface; and a guide groove portion 52b having a concave shape relative to the flat surface of the base portion 52a. The guide groove portion 52b is continuously formed in the front-back direction in such a way that the teeth 13 of the zipper chain 11 can be inserted and guided therethrough. The guide groove portion 52b includes: a groove bottom surface arranged parallel to the base portion 52a; and left and right sidewalls rising from the left and right side edges of the groove bottom surface.

[0123] The bottom surface of the guide groove 52b is provided with: a needle hole 52c for the sewing machine needle 54 to pass through; and a gear opening 52d for a portion of the conveyor gear 57 to pass through. The gear opening 52d is disposed in the passageway through which the chain teeth 13 of the zipper chain 11 pass through the guide groove 52b. The sewing machine needle 54 is held in a manner that allows it to reciprocate in the vertical direction together with the needle bar 53.

[0124] The conveying gear 57 is formed of a spur gear with multiple teeth on its outer periphery. The tooth spacing of the conveying gear 57 is set to be the same as, or slightly larger than, the forming spacing in the front-to-back direction of the zipper teeth 14 forming the chain tooth row 13. Here, the tooth spacing refers to the value obtained by dividing the pitch circle of the conveying gear 57 by the number of teeth. The teeth of the conveying gear 57 are formed at a height (tooth height) that allows the teeth to mesh with the zipper teeth 14.

[0125] The feed gear 57 is arranged along the front-rear direction of the sewing machine 50 and is held by a gear holder (not shown) at a position below the needle plate portion 52 on its rotation axis. The feed gear 57 is rotated by a rotary drive unit (not shown) having a servo motor or a stepper motor. Furthermore, the feed gear 57 is positioned such that at least one tooth of the feed gear 57 always protrudes into the guide groove portion 52b via a gear opening 52d provided in the guide groove portion 52b.

[0126] The bobbin (not shown) of sewing machine 50 is formed in essentially the same way as the bobbin used in conventional sewing machines. Specifically, the bobbin includes: a spool on which the lower thread 5b is wound; a spool box for housing the spool; and an outer bobbin, which is rotatably configured and has a pointed tip.

[0127] When using the sewing machine 50 described above to sew the zipper chain strap 11 onto the fabric 2, firstly, the chain teeth 13 of the zipper chain strap 11 are guided into the guide groove 52b of the needle plate 52, and the zipper strap 12 is placed on the base 52a of the needle plate 52. At this time, the chain teeth 13 are engaged with the teeth of the feed gear 57 protruding from the lower side of the needle plate 52 toward the guide groove 52b. Furthermore, the fabric 2 is aligned with the zipper chain strap 11 and placed on the needle plate 52 so that the fabric 2 covers the zipper chain strap 11 from above. Then, the sewing machine presser foot 56 is lowered, as... Figure 8 As shown, the zipper teeth 11 and the fabric 2 are held in a manner that allows them to be held between the sewing machine presser foot 56 and the needle plate 52.

[0128] Then, the sewing machine 50 is operated, thereby rotating the conveyor gear 57 to convey the zipper teeth 11, and causing the sewing machine needle 54 to move up and down in the vertical direction. At this time, the fabric 2 is conveyed together with the zipper teeth 11. While conveying the zipper teeth 11 and the fabric 2, the sewing machine needle 54 pierces the fabric 2 and the zipper teeth 12 to perform a flat stitch, thereby forming a straight or approximately straight stitch section 5 along the front-to-back direction by the upper thread 5a and the lower thread 5b, and sewing the fabric 2 and the zipper teeth 12 together through this stitch section 5.

[0129] Here, the position (needle drop position) where the sewing machine needle 54 pierces the fabric 2 and the zipper tape 12 will be described. In this embodiment, the sewing machine needle 54 pierces the fabric 2 and the zipper tape 12 in the front-back direction at a position within the gap region 22 relative to the zipper tooth tape 11, which has alternating tooth areas 21 and gap areas 22. In this case, it is preferable that the needle drop position of the sewing machine needle 54 is at the center between two adjacent zipper teeth 14 in the front-back direction. However, the needle drop position is not limited to the center between the zipper teeth 14, as long as it is within the gap region 22, and it can also be set to a position close to one of the two zipper teeth 14. In addition, the needle drop position can be only one location within each gap region 22, or it can be two or more locations. Furthermore, in this embodiment, the needle position where the sewing machine needle 54 pierces the fabric 2 and the zipper tape 12 is set to be on the outer side in the left-right direction, beyond the first wing 15b and the second wing 16b of the zipper teeth 14. In this way, by piercing the fabric 2 and the zipper tape 12 at specific positions in the front-back and left-right directions with the sewing machine needle 54, a straight or substantially straight sewing section 5 can be formed, and the sewing section 5 can contact the outer side end face of the first wing 15b of the zipper teeth 14 within each tooth region 21.

[0130] In this configuration, in the sewing machine 50 of this embodiment, the feed gear 57 rotates while always engaging with the zipper teeth 11. Therefore, the position of the zipper teeth 11 can be precisely controlled using the feed gear 57, while the zipper teeth 11 is fed stably. As a result, it is possible to suppress any deviation in the spacing of the zipper teeth 14 relative to the vertical movement of the sewing machine needle 54. Furthermore, by controlling the vertical movement of the sewing machine needle 54 in conjunction with the rotation of the feed gear 57, the position where the sewing machine needle 54 pierces the zipper tape 12 can be easily adjusted to fall within the gap region 22 of the zipper teeth 11.

[0131] By performing the sewing process as described above, the stitching part 5, which forms the interlacing part 6 only in the gap area 22 of the zipper tooth belt 11, can sew together the zipper belt 12 of the zipper tooth belt 11 and the tooth belt mounting edge 3 of the fabric 2.

[0132] After the sewing process is completed, a bending process is performed to bend the toothed chain belt mounting edge 3 at the position where the sewn part 5 is formed.

[0133] In this bending process, the chain strap mounting edge 3 of the fabric 2 is bent along the sewn portion 5, which is formed in a straight or substantially straight shape, such that the first side edge 3a and the second side edge 3c of the chain strap mounting edge 3 overlap vertically. This produces a product as shown in the image. Figures 2-5 The fabric 2 is sewn with zipper teeth 11 as shown. At this time, on the upper surface side of the zipper tape 12, the sewn part 5 is covered by the toothed tape mounting edge 3 and is not visible. In addition, a portion of the upper thread 5a of the sewn part 5 is held on the inner periphery of the toothed tape mounting edge 3 in an enclosed manner.

[0134] Then, the fabric 2 with the zipper teeth 11 sewn on is assembled in groups of two, and the zipper pull 40 is installed on the zipper teeth 13 of one group of zipper teeth 11, thereby creating the fabric 2 with a zipper 10. By using the fabric 2 with the zipper 10 to make a garment 1, a garment like... Figure 1 The garment 1 shown has a zipper 10.

[0135] In addition, in this embodiment, for example, after making a garment 1 from two pieces of fabric 2 with zipper teeth 11 sewn together, the zipper head 40 can be installed on the two rows of zipper teeth 13 provided on the garment 1, thereby creating a garment 1 with a zipper 10.

[0136] In the garment 1 with zipper 10 of this embodiment manufactured as described above, the sewn portion 5, which sews the zipper teeth 11 and the fabric 2, is formed such that the interlacing portion 6 of the sewn portion 5 is arranged in the gap area 22 of each of the left and right zipper teeth 11. Therefore, on the back side of the garment 1, the sewn portion 5, which is formed in a straight or substantially straight line along the front-back direction, can stably contact the first wing 15b of the zipper teeth 14 (see reference). Figure 4 or Figure 10 Furthermore, therefore, on the surface side of garment 1, for example, Figure 3 As shown, the sewing part 5 fixes the position of the zipper tooth mounting edge 3 of the fabric 2, and the zipper tooth mounting edge 3 can stably maintain contact with the second wing 16b of the zipper tooth 14. As a result, it is possible to prevent the zipper tape 12 from being exposed between the zipper tooth 14 and the fabric 2 in the left-right direction.

[0137] Thus, in this embodiment, the zipper tape 12 is substantially covered and concealed from the outside (upper side) by the toothed zipper tape mounting edge 3 of the fabric 2, making the exposed portion of the zipper tape 12 very small. Therefore, even if the zipper tape 12 is not waterproof or water-resistant, as long as the fabric 2 of the garment 1 is waterproof or water-resistant, it is difficult for liquids such as water to penetrate from the surface side to the back side of the garment 1 via, for example, the zipper 10 of the garment 1. Furthermore, in this case, by not imposing waterproof or water-resistant properties on the zipper tape 12, benefits such as reduced manufacturing costs and simplified manufacturing processes can be achieved.

[0138] Furthermore, in this embodiment, the zipper tape 12 is largely covered by the toothed zipper tape mounting edge 3 of the fabric 2, making it difficult to see the zipper tape 12 from the outside of the garment 1, thus easily improving the design or appearance quality of the garment 1.

[0139] Furthermore, in this embodiment, on the back side of garment 1, such as Figure 4 As shown, the sewing portion 5, which is formed in a straight line along the front-back direction, is arranged to contact the first wing 15b of the zipper tooth 14. However, in this invention, on the back side of the garment 1, the straight sewing portion 5 can also be arranged at a position slightly separated from the first wing 15b of the zipper tooth 14. In this case, on the surface side of the garment 1, the position of the zipper tape mounting edge 3 of the fabric 2 can also be fixed by the straight sewing portion 5, keeping the zipper tape mounting edge 3 in contact with or close to the second wing 16b of the zipper tooth 14, thus preventing or suppressing the zipper tape 12 from being exposed between the zipper tooth 14 and the fabric 2.

[0140] Alternatively, in this invention, the zipper tooth 14 of the above embodiment can be replaced by, for example... Figure 9The modified example shown involves multiple zipper teeth 14a disposed on the zipper tape 12, thereby forming a zipper tooth tape 11a.

[0141] The modified zipper tooth 14a includes: a first wing 15f extending outward from the first main body 15a in a left-right direction; and a second wing 16e extending outward from the second main body 16a in a left-right direction.

[0142] To prevent or suppress the sewing portion 5 from overlapping with the first wing portion 15f in the vertical direction, the first wing portion 15f has a first inclined portion 15g in which the height dimension of the first wing portion 15f gradually decreases as it moves outward in the left-right direction. Therefore, for example, during sewing processing, even if the sewing portion 5 (lower thread 5b) is temporarily placed in a manner overlapping the first wing portion 15f in the vertical direction, the sewing portion 5 (lower thread 5b) can be moved outward in the left-right direction, making it easy to position the sewing portion 5 further outward in the left-right direction than the first wing portion 15f. Furthermore, it is easy to make the sewing portion 5 contact the side end face that moves outward in the left-right direction towards the first wing portion 15f.

[0143] To prevent or suppress the overlap of the sewn portion 5 with the second wing 16e in the vertical direction, the second wing 16e has a second inclined portion 16f whose height gradually decreases as it moves outward in the left-right direction. Therefore, for example, during sewing, the sewn portion 5 (upper thread 5a) can be easily positioned outward in the left-right direction from the second wing 16e, similar to the case of the first inclined portion 15g. Furthermore, it is also possible to form only one of the first inclined portion 15g of the first wing 15f and the second inclined portion 16f of the second wing 16e in the zipper tooth 14a.

[0144] Moreover, in the above embodiments, such as Figure 3 and Figure 4 As shown, the sewn part 5, where the zipper teeth 11 and the fabric 2 are sewn together, is formed as a straight line along the front-to-back direction. However, in this invention, for example, it can also be formed as follows: Figure 10 As shown in another variation of the product with a zipper, the sewn part 5 where the zipper teeth 11 and the fabric 2 are sewn together is formed in a generally straight line in a manner that includes a portion with a small local bend or curve in the front-back direction.

[0145] To explain in detail, Figure 10 In the modified example shown, the sewing part 5 is formed in such a way that when sewing the zipper tooth tape 11 to the fabric 2, the position of the interlacing part 6 forming the sewing part 5 (that is, the position where the sewing machine needle 54 pierces the fabric 2 and the zipper tape 12) is set in the left-right direction to be on the inner side in the left-right direction than the position of the outer side end face of the first wing 15b.

[0146] Therefore, in the variant example Figure 10 The sewing portion 5 includes: a straight portion that contacts the first wing 15b of the zipper tooth 14, and a portion that is slightly bent or curved towards the inner side in the left-right direction from a position relative to the outer end face of the first wing 15b. In this case, the straight portion of the sewing portion 5 is formed in the tooth region 21. The bent or curved portion of the sewing portion 5 is formed in the gap region 22. Furthermore, it is preferable that the position of the interlacing portion 6 of the sewing portion 5 is as shown in the bottom view of the product with the zipper (…). Figure 10 In the left-right direction, it is set within the range between the outer side end face of the first step portion 15e and the first wing portion 15b of the first chain tooth portion 15.

[0147] In addition, although the illustration is omitted, the generally straight sewing part 5 also includes the following sewing part: for example, the upper thread 5a and the lower thread 5b are curved in an arc shape to bypass the outer side of the zipper tooth 14 in the left and right directions, and the lower thread 5b is formed to contact a part of the first wing 15b of the zipper tooth 14.

[0148] By forming such a generally straight sewing section 5, the zipper teeth 11 can be sewn to the fabric 2 in substantially the same way as the straight sewing section 5 in the aforementioned embodiment.

[0149] Furthermore, in this embodiment, the garment 1 with zipper 10 is described as having waterproof or water-repellent properties. However, in this invention, the garment 1 with zipper 10 may not also have waterproof or water-repellent properties. Moreover, in this embodiment, garment 1 is described as a representative example of a product with zipper 10, but in this invention, products with zippers are not limited to garments. The products with zippers in this invention include a wide variety of products, such as clothing other than garments, everyday consumer goods like shoes or bags, industrial materials, and various sheet products used in automobiles, trains, and airplanes.

Claims

1. A product with a zipper, comprising: The product (1) with a zipper belt (11, 11a) having a plurality of zipper teeth (14, 14a) arranged at certain intervals on the zipper belt (12); and a zipper mounting member (2) having a pair of tooth belt mounting edges (3) arranged in opposite positions for mounting a pair of said zipper belts (11, 11a), the product (1) with a zipper being characterized in that: The zipper teeth (11, 11a) are installed on the tooth mounting edge (3) via a sewing part (5), the sewing part (5) being formed by a thread including an upper thread (5a) and a lower thread (5b). The sewing part (5) includes a plurality of interlacing parts (6), which pass through the toothed chain strap mounting edge part (3) and the zipper strap (12) and are formed by the intersection of the upper thread (5a) and the lower thread (5b). The zipper teeth (11, 11a) have alternating ranges along their length. These alternating ranges are formed by alternating gap areas (22) defined by the maximum interval on the zipper strip (12) between adjacent zipper teeth (14, 14a) along their length, and tooth areas (21) where the zipper teeth (14, 14a) are provided and formed between the gap areas (22). The interlacing portion (6) is provided only in the gap region (22) within the alternation range. The sewing part (5) is in contact with or close to the outer side face of the zipper teeth (14, 14a) within the zipper tooth area (21).

2. The product with a zipper according to claim 1, characterized in that: The sewn part (5) is formed in a straight or approximately straight line along the length direction of the zipper teeth (11, 11a).

3. The zippered product according to claim 1 or 2, characterized in that: The sewn part (5) contacts at least a portion of the zipper teeth (14, 14a) within the zipper tooth area (21).

4. The zippered product according to claim 1 or 2, characterized in that: The zipper teeth (14, 14a) include: a first tooth portion (15) fixed to a first surface of the zipper tape (12); and a second tooth portion (16) fixed to a second surface of the zipper tape (12). The first zipper tooth (15) and the second zipper tooth (16) each include at least: a main body (15a, 16a) which is fixed to the zipper tape (12); and wings (15b, 15f, 16b, 16e) which extend outward from the main body (15a, 16a) in the width direction of the tape and whose dimensions in the front and back direction of the tape are smaller than those of the main body (15a, 16a).

5. The zippered product according to claim 1 or 2, characterized in that: When viewed in a cross section orthogonal to the length direction, the zipper tape mounting edge (3) includes: a bent portion (3b) which is bent into a U-shape such that a portion of the sewn portion (5) is wrapped inside the zipper tape mounting edge (3); and a first side edge (3a) and a second side edge (3c) which extend from the bent portion (3b) along the zipper tape (12). The bent portion (3b) is fixed by the sewing portion (5) at a position that contacts the zipper teeth (14, 14a).

6. A method for manufacturing a product with a zipper, comprising using a sewing machine (50) to sew together a zipper tooth belt (11, 11a) having a plurality of zipper teeth (14, 14a) arranged at certain intervals on a zipper belt (12) with a pair of tooth belt mounting edges (3) located at opposing positions on a zipper mounting member (2), thereby manufacturing a product (1) with the zipper tooth belts (11, 11a) respectively mounted on the tooth belt mounting edges (3), the method for manufacturing the product with a zipper being characterized in that it includes: In the sewing process, a sewing part (5) is formed by using the sewing thread of the sewing machine (50) containing an upper thread (5a) and a lower thread (5b), which includes multiple interlacing portions (6) that pass through the zipper tape mounting edge (3) and the zipper tape (12) and are formed by the intersection of the upper thread (5a) and the lower thread (5b); and During the formation of the sewing portion (5), in the length direction of the zipper tooth belt (11, 11a), within an alternating range where the gap area (22) defined by the maximum interval on the zipper belt (12) between adjacent zipper teeth (14, 14a) in the length direction and the tooth area (21) formed between the gap area (22) where the zipper teeth (14, 14a) are provided, the interlacing portion (6) is provided only in the gap area (22); and The process of sewing the zipper teeth (11, 11a) to the tooth mounting edge (3) by means of the formed sewing part (5), and making the sewing part (5) contact or approach the outer side end face of the zipper teeth (14, 14a) in the tooth area (21).

7. The method for manufacturing a zippered product according to claim 6, characterized in that, include: The sewing process is a process in which the sewn part (5) is formed in a straight or substantially straight line along the length direction of the zipper teeth (11, 11a).

8. The method for manufacturing a zippered product according to claim 6 or 7, characterized in that, include: The process of forming the sewing part (5) in such a way that it contacts at least a portion of the zipper teeth (14, 14a) in the zipper tooth area (21).

9. The method for manufacturing a zippered product according to claim 6 or 7, characterized in that, include: In the sewing process, the zipper belt (11, 11a) is fed together with the zipper mounting member (2) by engaging and rotating the conveyor gear (57) provided on the sewing machine (50) with the zipper teeth (14, 14a) of the zipper belt (11, 11a). The process of sewing the conveyed zipper chain tape (11, 11a) to the chain tape mounting edge (3) by raising and lowering the sewing machine needle (54) of the sewing machine (50) according to the rotation of the conveying gear (57).

10. The method for manufacturing a zippered product according to claim 6 or 7, characterized in that, include: After the zipper tooth chain tape (11, 11a) is sewn to the tooth chain tape mounting edge (3) through the sewing part (5), the tooth chain tape mounting edge (3) is bent into a U-shape at the position where the sewing part (5) is formed, so that a part of the sewing part (5) is wrapped inside.

Images