Slide fastener

Abstract

To provide a slide fastener and a fastener stringer that enables a slider, sliding along a fastener tape, to be held in an intended position, in a state in which the pair of fastener stringers is separated.SOLUTION: A slide fastener comprises: a first long fastener tape (10) that has a back side (11) and a front side (13); a first element row (50) that is provided on the back side (11) of a width-direction one end (10a) of the first fastener tape (10); and a bent part (10c) that has the width-direction one end (10a) of the first fastener tape bent so that the front side (13) can form an arched shape. The bent part (10c) presses at least a part of a slider diameter (103).SELECTED DRAWING: Figure 17

Description

[Technical Field]

[0001] The present invention relates to a fastener stringer and a slide fastener. [Background technology]

[0002] Known types of slide fasteners include normal slide fasteners in which the element row is generally attached so that it is visible on the outside (front side) of the product, reverse-use slide fasteners in which the element row is attached to the inside (back side) of the product so that it is less visible, and hidden slide fasteners in which the side edges of the left and right fastener tapes are folded back in a U-shape in the width direction and the element row is attached to the folded-back tape portion.

[0003] Taking advantage of the advantage that their concealment does not interfere with the design of the product, reverse-use and hidden-type slide fasteners are suitable for use in various types of clothing, shoes, bags, furniture, etc. In recent years, they have also been used in seat covers for various types of seats in automobiles, trains, airplanes, etc. Patent Document 1 discloses an example of a reverse slide fastener that includes a pair of left and right fastener stringers and a slider that can open and close the pair of left and right fastener stringers. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2009-56076 Summary of the Invention [Problem to be solved by the invention]

[0005] The slide fastener described in Patent Document 1 aims to maintain visibility by tightly adhering a pair of left and right fastener tapes together, but when the pair of left and right fastener stringers are separated, the slider easily moves up and down along the row of elements that make up the fastener stringers.

[0006] For example, there is a problem that the slider unintentionally moves up and down repeatedly along the element row due to shaking caused by movement or exercise, washing in a washing machine, etc., which causes the fastener tape to rub more than necessary inside the slider, accelerating deterioration of the fastener tape. There is also a problem that when attempting to engage a pair of left and right fastener tapes, the slider is likely to move from a predetermined position, which can worsen workability.

[0007] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a fastener stringer and a slide fastener that can hold a slider that slides along a fastener tape at an intended position when a pair of fastener stringers are separated. [Means for solving the problem]

[0008] The above object of the present invention can be achieved by the following configuration. [1] A first fastener tape (10) that is long and has a back surface (11) and a front surface (13); a first element row (50) provided on the back surface (11) of one widthwise end (10a) of the first fastener tape (10); a bent portion (10c) formed by bending one end (10a) in the width direction of the first fastener tape in an arch shape toward the surface (13); Equipped with The bent portion (10c) presses at least a part of a slider bore (103) defined by at least the upper blade (110), the lower blade (120), the connecting post (130), and the flange portions (140a, 140b) of the slider (40) sliding along the first element row (50). Zipper stringer. [2] [1] The fastener stringer (3), a fastener stringer (5) including a second fastener tape (20) having an elongated shape and a back surface (21) and a front surface (23), and a second element row (60) provided on the back surface (21) of one widthwise end portion (20a) of the second fastener tape (20); the slider (40) is slidably provided on the first and second element rows (50, 60) extending in the front-rear direction, and slides forward to engage the first and second element rows (50, 60) and backward to separate the first and second element rows (50, 60); Equipped with one widthwise end (10a) of the first fastener tape (10) extends toward the second fastener tape (20) from the center of engagement (O) of the first and second element rows (50, 60), and one widthwise end (20a) of the second fastener tape (20) extends toward the first fastener tape (10) from the center of engagement (O), so that when the first and second element rows (50, 60) are engaged with each other, the bent portions (10c, 20c) formed at the one widthwise end (10a) of the first fastener tape (10) and the one widthwise end (20a) of the second fastener tape (20) come into close contact with each other. Slide fastener. [Effects of the Invention]

[0009] According to the present invention, when the pair of fastener stringers are separated, the slider that slides along the fastener tape can be held at an intended position. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a surface view showing a slider fastener using a slider according to the present invention. [Figure 2] FIG. 2 is a cross-sectional view of a main part of the slide fastener shown in FIG. 1, showing a state in which the first and second element rows are engaged with each other. [Figure 3]FIG. 3 is a perspective view showing the slider. [Figure 4] FIG. 4 is a perspective view showing the slider. [Figure 5] FIG. 5 is a side view showing the slider. [Figure 6] FIG. 6 is a plan view showing the slider. [Figure 7] FIG. 7 is a bottom view showing the slider. [Figure 8] FIG. 8 is a cross-sectional view taken along line F-F of FIG. 5 showing the lower blade. [Figure 9] FIG. 9 is a cross-sectional view taken along line GG in FIG. 5, showing the upper blade. [Figure 10] FIG. 10 is a cross-sectional view taken along line HH of FIG. 7, showing the element guideway. [Figure 11] FIG. 11 is a cross-sectional view taken along the line AA in FIG. 1, showing the state inside the slider body. [Figure 12] FIG. 12 is a cross-sectional view taken along the line BB in FIG. 1, showing the state inside the slider body. [Figure 13] FIG. 13 is a cross-sectional view taken along CC in FIG. 1, showing the state inside the slider body. [Figure 14] FIG. 14 is a cross-sectional view taken along the line DD in FIG. 1, showing the state inside the slider body. [Figure 15] FIG. 15 is a cross-sectional view taken along the line E-E in FIG. 1, showing the state inside the slider body. [Figure 16] FIG. 16 is a surface view showing a state in which the slider is supported by one of the fastener stringers. [Figure 17] 17 is a cross-sectional view of a main part of the slide fastener, taken along CC in FIG. 1, showing a state in which the first and second element rows are separated. [Figure 18] 18 is a cross-sectional view of the main part of the fastener tape and slider, omitting the elements, and is a cross-sectional view taken along line II in FIG. 1, showing a state in which the first and second element rows are separated. [Figure 19] FIG. 19 is a cross-sectional view of a main part of a slide fastener according to a second embodiment, showing a state in which the first and second element rows are engaged with each other. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, slide fasteners to which fastener stringers according to embodiments of the present invention are applied will be described in detail with reference to the drawings. In this specification, the "front-to-rear direction" of the slider refers to the sliding direction of the slider, which is the longitudinal direction of the slide fastener. In particular, the direction in which the slider slides to interlock the left and right element rows is referred to as "forward," and the direction in which the slider slides to separate the left and right element rows is referred to as "rear." The "left-right direction" refers to the direction in which a pair of element rows are arranged, a direction perpendicular to the sliding direction of the slider, and can also be rephrased as the width direction of the slide fastener. Furthermore, the "up-down direction" is a direction perpendicular to the front-rear direction and the left-right direction, and can also be rephrased as the thickness direction of the slider or fastener tape or the height direction of the element row. The "up-down direction" can also be rephrased as the "front-rear direction."

[0012] (Slide fastener 1 configuration) Fig. 1 is a surface view showing a slider fastener using a slider according to the present invention, and Fig. 2 is a cross-sectional view of a main part of the slide fastener shown in Fig. 1, showing a state in which the first and second element rows are engaged with each other.

[0013] As shown in FIGS. 1 and 2, the slide fastener 1 includes a pair of left and right fastener stringers 3, 5, and a slider 40 that opens and closes the pair of left and right fastener stringers 3, 5.

[0014] The pair of left and right fastener stringers 3, 5 are long and comprise a pair of first and second fastener tapes 10, 20 each having a back surface 11, 21 and a front surface 13, 23, a first element row 50 provided on the back surface 11 of one widthwise end portion 10a of the first fastener tape 10, and a second element row 60 provided on the back surface 21 of one widthwise end portion 20a of the second fastener tape 20.

[0015] The first and second fastener tapes 10, 20 are woven or knitted fabrics made of polyester yarn etc. and have excellent flexibility. The first and second fastener tapes 10, 20 may also be made of nonwoven fabric.

[0016] The slider 40 engages and separates the pair of left and right first and second element rows 50, 60. The slider 40 includes a slider body 100, a pull-tab attachment portion 42 provided on the surface of the slider body 100, and a pull tab 43 attached to the pull-tab attachment portion 42. When the slider 40 moves forward (upward in the drawing), the pair of left and right first and second element rows 50, 60 mesh together as shown in Fig. 2. On the other hand, when the slider 40 moves backward (downward in the drawing), the pair of left and right first and second element rows 50, 60 separate. The slide fastener 1 may also be provided with an upper stop portion and a lower stop portion (not shown). Also, instead of the lower stop portion, an opening device having a box pin and a box body may be provided.

[0017] The first and second element rows 50, 60 are coil-shaped fastener element rows formed by winding a monofilament made of synthetic resin in a fixed direction, and each have a plurality of elements 31. The first and second element rows 50, 60 have a core cord 32 inserted through the inside of a plurality of elements 31, and are sewn to the back surface 11 of one widthwise end portion 10a of the first fastener tape 10 and the back surface 21 of one widthwise end portion 20a of the second fastener tape 20 by a sewing thread 33 that is double chain stitched. Examples of synthetic resin materials for the monofilament include polyester and nylon.

[0018] The element 31 includes a first leg portion 31b extending from the front end of the interlocking head portion 31a, which interlocks with and separates from the mating element 31, toward the other end in the width direction and contacting the first and second fastener tapes 10, 20, a second leg portion 31c extending from the back end of the interlocking head portion 31a toward the other end in the width direction and not contacting the first and second fastener tapes 10, 20, and a connecting portion 31d connecting the outer end of the first leg portion 31b in the width direction to the other end in the width direction of the second leg portion 31c of the adjacent element 31. Therefore, the first leg portion 31b and the second leg portion 31c are formed to protrude from the interlocking head portion 31a and extend in parallel.

[0019] 2 shows the meshing center O of the first and second element rows 50, 60. This meshing center O is the central position when the elements 31, 31 mesh with each other, and coincides with the center of the slide fastener 1 in the width direction.

[0020] When the first and second element rows 50, 60 are separated, one widthwise end face 10b of the first fastener tape 10 extends toward the second fastener tape 20 (one widthwise end side) from the position that corresponds to the meshing center O of the first and second element rows 50, 60. Similarly, one widthwise end face 20b of the second fastener tape 20 extends toward the first fastener tape 10 (one widthwise end side) from the position that corresponds to the meshing center O. That is, as shown in FIG. 2, the first and second fastener tapes 10, 20 are designed to overlap with the center O of engagement when the first and second element rows 50, 60 are engaged with each other.

[0021] As a result, as shown in the upper part of Fig. 1, when the slider 40 is moved forward (upward in the drawing) from a state in which the first and second fastener tapes 10, 20 (first and second element rows 50, 60) are separated, the first and second element rows 50, 60 mesh with each other as shown in Fig. 2. At this time, one widthwise end portion 10a of the first fastener tape 10 and one widthwise end portion 20a of the second fastener tape 20 press against each other in the width direction, deform, and bend so as to protrude in an arched shape on the front side, thereby coming into close contact with each other.

[0022] 2, bent portions 10c, 20c are formed at widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 by bending archedly toward the surfaces 13, 23. Each bent portion 10c, 20c has a bent base end portion 10c1, 20c1 and a bent tip end portion 10c2, 20c2, and is formed to be elastically deformable.

[0023] According to this configuration, when the first and second element rows 50, 60 are interlocked with each other, the bent tip ends 10c2, 20c2 of the first and second fastener tapes 10, 20 are in close contact with each other, so that no gap (so-called partition) is formed between the first and second fastener tapes 10, 20 as in conventional reverse-operated slide fasteners. Therefore, when a user views the slide fastener 1 from the front side, the first and second element rows 50, 60 are not visible, resulting in an excellent appearance. Such a slide fastener 1 is particularly suitable for articles whose aesthetic appearance is made of resin, such as car seats, bags, and furniture. Furthermore, in the state where the first and second element rows 50, 60 are separated, the slider 40 that slides along the first fastener tape 10 (or the second fastener tape 20) can be held at a predetermined position. Details will be described later.

[0024] Furthermore, since the first and second fastener tapes 10, 20 are closely adhered to each other with the arched bent portions 10c, 20c pressing against each other, even if a force (so-called lateral pulling) acts on the first and second fastener tapes 10, 20 in a direction separating them from each other, the degree of bending weakens slightly within the range where the meshing gap between the elements 31, 31 is canceled, the slide fastener 1 can maintain its good appearance.

[0025] Furthermore, since the bent portions 10c, 20c are formed at the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20, when the first and second element rows 50, 60 are interlocked with each other, as shown in FIG. 2, the back surfaces 11, 21 of the widthwise end faces 10b and 20b of the first and second fastener tapes 10, 20 are spaced apart in the front-to-back direction from the first and second element rows 50, 60 (elements 31), and first and second spaces T1, T2 are formed between them, respectively. By providing the first and second spaces T1, T2, the first and second fastener tapes 10, 20 can be easily bent when the first and second element rows 50, 60 are combined with the slider 40. Furthermore, the larger the first and second spaces T1, T2, the larger the crimping area between the surfaces 13, 23 of the widthwise end portions 10a and 20a of the first and second fastener tapes 10, 20, and the more effectively gaps are prevented from forming between the first and second fastener tapes 10, 20. This results in a better appearance and improved waterproofing.

[0026] According to the above-described slide fastener 1, when the slider 40 is moved forward to engage the first and second element rows 50, 60, the widthwise ends 10a, 20a of the first and second fastener tapes 10, which are formed longer than usual, may get caught inside the slider body 100, resulting in increased sliding resistance. Therefore, the following will describe the configuration of the slider 40 that can reduce sliding resistance even in the slide fastener 1 in which the first and second fastener tapes 10, 20 are bent to improve aesthetic appearance.

[0027] (Configuration of slider 40) Hereinafter, a specific configuration of the first embodiment of the slider body 100 constituting the slider 40 will be described with reference to Figs. 3 to 10. Fig. 3 is a perspective view showing the slider. Fig. 4 is a perspective view showing the slider. Fig. 5 is a side view showing the slider. Fig. 6 is a plan view showing the slider. Fig. 7 is a bottom view showing the slider. Fig. 8 is a FF cross-sectional view of Fig. 5 showing the lower blade. Fig. 9 is a GG cross-sectional view of Fig. 5 showing the upper blade. Fig. 10 is an HH cross-sectional view of Fig. 7 showing the element guideway.

[0028] The slider body 100 comprises an upper blade 110 and a lower blade 120 arranged opposite each other and spaced apart in the vertical direction, a vertical connecting pillar 130 connecting the upper blade 110 and the lower blade 120 at their front ends, a flange portion 140a protruding downward along both left and right widthwise edges of the upper blade 110, and a flange portion 140b protruding upward along both left and right widthwise edges of the lower blade 120. As a result, left and right shoulder openings 101 separated by the connecting pillars 130 are formed in the front part of the slider body 100, and a rear opening 102 is formed in the rear part of the slider body 100. In addition, a substantially Y-shaped element guide path 103 that connects the left and right shoulder openings 101 and the rear opening 102 is formed between the upper blade 110 and the lower blade 120, and the first and second element rows 50, 60 are inserted into this element guide path 103. This slider body 100 is molded from metal or synthetic resin. That is, element guide path 103, which is a slider bore through which the element is guided, is defined by at least upper blade 110, lower blade 120, connecting pole 130, and flange portions 140a and 140b.

[0029] The upper wing 110 has, on its surface facing the lower wing 120 (the opposing surface 110a of the upper wing 110), a front-to-rear partition portion 113 that is inserted between the widthwise ends 10a, 20a of the first and second fastener tapes 10, 20, and a first escape portion 111 that forms a space for the widthwise ends 10a, 20a of the first and second fastener tapes 10, 20 to retreat. On both the left and right side surfaces of the upper portion of the connecting pillar 130, second relief portions 131 are formed to form spaces for retracting the widthwise ends 10a, 20a of the first and second fastener tapes 10, 20. Support surfaces 135 for maintaining the orientation of the element 31 are formed on both the left and right side surfaces of the lower part of the connecting column 130 . The lower blade 120 has a protrusion 121 formed on the surface facing the upper blade 110 (opposing surface 120a of the lower blade 120) that supports the second leg portion 31c of each element 31 engaged within the element guide path 103. The configurations of the partition 113, the first recess 111, the second recess 131, the support surface 135, and the protrusion 121 will be specifically described below.

[0030] The middle partition 113 is disposed at the center of the opposing surface 110a of the upper blade 110 in the left-right direction, and is a protruding piece that protrudes downward from the opposing surface 110a of the upper blade 110 toward the opposing surface 120a of the lower blade 120. The middle partition 113 is formed in the shape of a thin plate that extends in the front-rear direction from the rear end of the connecting pillar 130 to the rear end (rear opening 102) of the upper blade 110. In the illustrated example, the partition 113 has a partition front part 113a extending from the front end to the midpoint in the longitudinal direction, and a partition rear part 113b extending from the rear end of the partition front part 113a to the rear end of the upper blade 110 and projecting less downward than the partition front part 113a. For this configuration, please refer to Figures 4, 9, 10, etc.

[0031] The partition front portion 113a protrudes downward slightly more than the flange portion 140a of the upper blade 110. Therefore, the lower end of the partition front portion 113a is located slightly closer to the lower blade 120 than the lower end of the flange portion 140a of the upper blade 110. This configuration can be seen in Figure 5. On the other hand, the partition rear portion 113b protrudes downward less than the flange portion 140a of the upper blade 110. Therefore, the lower end of the partition rear portion 113b is located closer to the upper blade 110 than the lower end of the flange portion 140a of the upper blade 110. The lower end of the partition 113 has a smooth rounded shape. See FIG. 7 for this configuration. In the example shown in FIG. 9, the partition front portion 113a is formed to be slightly longer in the front-rear direction than the partition rear portion 113b. The partition 113 is not limited to the configuration shown in the drawing, as long as it is formed so that the amount of protrusion toward the lower blade 120 gradually decreases toward the rear.

[0032] According to this configuration, by making the partition rear portion 113b protrude downward less than the partition front portion 113a, even if an opening device or the like (not shown) is provided in the slide fastener 1, a space for accommodating the opening device or the like can be secured in the rear portion of the element guide path 103. In other words, the partition portion 113 can be provided in the slider body 100 regardless of whether an opening device is provided or not.

[0033] The first recess 111 is a groove extending in the front-rear direction formed by recessing the inner side in the left-right direction of the opposing surface 110a of the upper blade 110. A pair of first recesses 111 are provided on the left and right sides adjacent to the outer left and right sides of the connecting pillar 130 and the partition part 113, and extend in the front-rear direction from the front end (shoulder opening 101) to the rear end (rear opening 102) of the upper blade 110. As a result, the thickness of the portion of the upper blade 110 where the first recess 111 is formed is thinner than the thickness of the other portions. In other words, the first recess 111 formed on the opposing surface 110a of the upper blade 110 is located between the flange portion 140a provided on the left and right edges of the upper blade 110 and the connecting pillar 130 and the middle partition portion 113 provided at the center of the left and right sides of the upper blade 110, and is located near the connecting pillar 130 or the middle partition portion 113.

[0034] The first recesses 111 are curved outward toward the left and right along the flanges 140a of the upper blades 110. In other words, the pair of left and right first recesses 111 are curved in directions that move them apart from each other from the rear opening 102 toward the shoulder opening 101. This configuration can be seen in Figure 9. The width of the first recesses 111 is wider at the shoulder opening 101 than at the rear opening 102.

[0035] According to this configuration, the first escape portions 111 serve as spaces for allowing the widthwise ends 10a, 20a of the first and second fastener tapes 10, 20 to escape so as not to come into strong contact with the upper blade 110 inside the slider body 100 on the left and right inner sides of the upper portion of the element guide path 103. For this configuration, please refer to Figures 9 and 12 to 15. The width of the first escape portion 111 is formed wider at the shoulder opening 101 than at the rear opening 102, so that the widthwise one end portions 10a, 20a of the uninterlocked mountain-shaped first and second fastener tapes 10, 20 are less likely to interfere with the shoulder opening 101 and the connecting pillar 130. In addition, since the first escape portion 111 is formed from the front end of the upper wing plate 110, it is possible to support (guide) the widthwise one end portions 10a, 20a of the mountain-shaped first and second fastener tapes 10, 20 so that they smoothly enter the shoulder portion 101 of the slider 40. Similarly, the first escape portion 111 extends to the rear end of the upper wing 110, and therefore supports (guides) the smooth exit of the widthwise one end portions 10a, 20a of the closely-attached mountain-shaped first and second fastener tapes 10, 20 from the rear opening 102.

[0036] The second clearance portion 131 is formed by cutting out the upper rear side of the vertical connecting pillar 130, which has a rectangular (elliptical) cross section that is long in the front-rear direction, rearward and inward on both the left and right sides. By forming a pair of left and right second recesses 131 in the connecting pillar 130, the upper rear side of the connecting pillar 130 is formed in an acute-angled mountain shape or a V shape. In addition, a step 132 extending in the front-to-rear direction along the lower end sides of the pair of second recesses 131 is formed in the middle of the upper rear side of the connecting pillar 130 in the vertical direction. This configuration can be seen in FIG. 8.

[0037] The step portion 132 forms a flat surface extending in a direction intersecting the extending direction of the connecting pole 130 at the vertical midpoint of the rear part of the connecting pole 130. The flat surface forming the step portion 132 comes into contact with one widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20, and thereby also functions as a guide surface that guides the first and second fastener tapes 10, 20 to bend smoothly into a mountain shape.

[0038] The vertical position of the step 132 on the connecting column 130 is desirably formed within a range of 30 to 70% from the lower end of the connecting column 130. In other words, the vertical position of the step 132 is formed so as to be approximately half the vertical height position of the element 31 guided in the element guide path 103. According to this configuration, the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 are more likely to come into contact with the step portion 132. This prevents the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 from getting caught between the coupling head portion 31a of the element 31 and the connecting post 130.

[0039] In the example shown, the guide surface, which is the step portion 132, is slightly inclined toward the lower wing plate 120 outward in the left-right direction, but depending on the material of the first and second fastener tapes 10, 20 and the length of the widthwise end portions 10a, 20a, etc., it may be inclined toward the upper wing plate 110 outward in the left-right direction, or may be formed parallel to the upper wing plate 110 and the lower wing plate 120 so that the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 bend smoothly.

[0040] According to this configuration, the second recess 131 is formed by trimming the upper rear side of the connecting pillar 130, so that the processing of the second recess 131 is easy and inexpensive.

[0041] The support surfaces 135 are curved surfaces provided on the left and right outer sides of the lower part of the connecting column 130 and extending in the front-to-rear direction from the front end to the rear end of the connecting column 130. The support surfaces 135 are curved along the rear end of the engaging head 31a of the element 31, and are formed so as to support the left and right inner sides of the element 31 guided from the shoulder 101 to the element guide path 103.

[0042] In the element guide path 103, as the element 31 moves rearward from the shoulder 101, the interlocking head 31a may tilt toward the lower blade 120, and one widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 may become caught between the element 31 and the connecting post 130. This may cause the first and second fastener tapes 10, 20 to overlap each other in the element guide path 103, resulting in a sudden increase in the sliding resistance of the slider 40. To address this problem, the support surface 135 formed on the connecting column 130 supports the element 31 and maintains the position of the element 31 until the first and second element rows 50, 60 are engaged, thereby efficiently preventing an increase in the sliding resistance of the slider 40. For this configuration, please refer to Figure 15, etc., which will be described later.

[0043] The protrusion 121 is formed at the left-right center of the opposing surface 120a of the lower wing 120, extending in the front-to-rear direction from the rear end of the connecting pillar 130 to the rear opening 102, and protruding from the opposing surface 120a of the lower wing 120 toward the upper wing 110. The protrusion 121 serves as a guide surface on which the second leg 31c of the element 31 is placed after the elements 31 constituting the first and second element rows 50, 60 are engaged by the slider body 100. The left-right width of the protrusion 121 is approximately the same as that of the connecting column 130 directly behind the connecting column 130, and is formed so that the left-right width becomes narrower toward the rear opening 102 at the rear. This configuration can be seen in FIG. 8.

[0044] (Action and effect) Next, the opening and closing operation of the first and second element rows 50, 60 via the slider body portion 100 will be described with reference to Fig. 1 and Figs. 11 to 15. Fig. 11 is a cross-sectional view taken along line AA in Fig. 1, showing the state inside the slider body portion. Fig. 12 is a cross-sectional view taken along line BB in Fig. 1, showing the state inside the slider body portion. Fig. 13 is a cross-sectional view taken along line CC in Fig. 1, showing the state inside the slider body portion. Fig. 14 is a cross-sectional view taken along line DD in Fig. 1, showing the state inside the slider body portion. Fig. 15 is a cross-sectional view taken along line EE in Fig. 1, showing the state inside the slider body portion.

[0045] When the slider 40 is slid forward along the slide fastener 1 to perform a closing operation, the slider body 100 can engage the first and second element rows 50, 60 spaced apart on the left and right.

[0046] Specifically, when the slider 40 is closed, the first element row 50 is first guided from one side of the shoulder 101 into the element guide path 103, and the second element row 60 is guided from the other side of the shoulder 101 into the element guide path 103. At this time, the element guide path 103 has a space for retracting the first and second fastener tapes 10, 20 on the upper blade 110 side due to the first escape portion 111 formed in the upper blade 110. Therefore, even if the first and second fastener tapes 10, 20 to which the first and second element rows 50, 60 are sewn are formed longer than usual and curved in a mountain (U) shape, the first and second fastener tapes 10, 20 are guided smoothly from the shoulder opening 101 into the element guide path 103 without getting caught. This configuration can be seen in Figure 11. Furthermore, since the first relief portion 111 extends from the front end to the rear end of the upper blade 110, the first and second fastener tapes 10, 20 are less likely to come into contact with the opposing surfaces 110a of the upper blade 110, which allows the slider 40 to slide smoothly. This configuration can be seen in Figures 11 to 15.

[0047] Next, the first and second element rows 50, 60, which have been guided from the shoulder 101 into the element guide path 103, are guided so as to gradually approach each other in the left-right direction as they move rearward. The first element row 50 and the second element row 60 are guided to the point where the Y-shaped element guide path 103 joins (the rear end of the connecting pillar 130), allowing the elements 31 to mesh with each other. At this time, the element guide path 103 has a space for retracting the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 to the inner side (connecting column 130) in the left-right direction, where they face each other, due to the second escape portion 131 formed in the connecting column 130. This prevents the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 from coming into strong contact with the upper blade 110 or the connecting column 130, thereby preventing an increase in sliding resistance. This configuration can be seen in Figures 12 and 15.

[0048] Next, behind the connecting pillar 130 of the element guide path 103, the first and second element rows 50, 60 are interlocked, so that one widthwise end portion 10a of the first fastener tape 10 and one widthwise end portion 20a of the second fastener tape 20 press against each other in the width direction, deforming and bending so as to protrude in an arched shape on the front side. At this time, the partition 113 provided on the upper blade 110 is inserted between the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 so as to sandwich them, thereby reliably bending the first and second fastener tapes 10, 20. As a result, the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 overlap each other in the vertical direction without bending, which efficiently and reliably prevents a sudden increase in sliding resistance. This configuration can be seen in Figures 13 and 14.

[0049] Additionally, behind the connecting pillar 130 of the element guideway 103, the protrusion 121 provided on the opposing surface 120a of the lower blade 120 allows the element 31 engaged by the slider body 100 to approach the opposing surface of the upper blade 110. This prevents the first and second fastener tapes 10, 20 from overlapping in the gap formed between the lower end of the partition 113 and the first leg 31b of the engaged element 31. In other words, the partition 113 can be more reliably inserted between the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20, allowing the widthwise end portions 10a, 20a of the first and second fastener tapes 10, 20 to be smoothly bent. This configuration can be seen in FIGS. 13 and 14.

[0050] When the slider 40 is opened by sliding it rearward along the slide fastener 1, the slider body 100 can switch the first and second element rows 50, 60, which are in an interlocked state, into a separated state on the left and right. In other words, the open and closed states of the pair of left and right fastener stringers 3, 5 can be switched via the slider body 100. This configuration can be seen in FIG. 1. As a result, even in the slide fastener 1 in which the first and second fastener tapes 10, 20 are formed long, the slider 40 can be smoothly opened and closed.

[0051] Next, with reference to Figures 16 to 18, the operation of maintaining the sliding position of the slider 40, which is slidable along the first fastener tape 10, when the first and second element rows 50, 60 are separated will be described. Figure 16 is a surface view showing a state in which the slider is supported by one of the fastener stringers. Figure 17 is a cross-sectional view of a main part of the slide fastener, taken along CC in Figure 1, showing a state in which the first and second element rows are separated. Figure 18 is a cross-sectional view of a main part of the fastener tape and slider, with elements omitted, taken along II in Figure 1, showing a state in which the first and second element rows are separated.

[0052] As shown in Figure 17, when the first and second element rows are separated from each other, the bent tip portion 10c2 formed at one widthwise end portion 10a of the first fastener tape 10 of the fastener stringer 3 is pressed against the middle partition portion 113 within the slider 40. As a result, the sliding position of the slider 40 sliding along the first fastener tape 10 is maintained by the frictional force between the bent tip end portion 10c2 and the inner partition portion 113, etc.

[0053] At this time, the arch-shaped bent portion 10c is pushed in a crushing direction, and when the bent tip portion 10c2 presses the middle partition portion 113 inside the slider 40, the reaction force presses the elements 31 constituting the first element row 50 toward the members constituting the element guide path 103 inside the slider 40. More specifically, the elements 31 constituting the first element row 50 are held by being sandwiched between the bent portion 10c and the lower blade 120 (or the flange portion 140b constituting the lower blade 120). This allows the sliding position of the slider 40 that slides along the first fastener tape 10 to be held at a predetermined position.

[0054] 17, the bent base end 10c1 of the first fastener tape 10 is disposed in a space formed by a first relief portion 111 formed in the upper blade 110 of the slider 40. Therefore, even if the bent base end 10c1 and the upper blade 110 are not in contact with each other or are in contact with each other, the bent base end 10c1 is not pressed against the upper blade 110. In other words, only the bent tip portion 10c2 of the widthwise end portion 10a of the first fastener tape 10 contacts and slides against the partition portion 113 of the slider 40, so the bent base end portion 10c1 side is less likely to deteriorate than the bent tip portion 10c2. 2, when the first and second element rows 50, 60 are interlocked, the bent base ends 10c1, 20c1 are visible, while the bent tip ends 10c2, 20c2 are pressed against each other and are in close contact with each other, making them difficult to see from the outside. In other words, according to this embodiment, the appearance of the slide fastener 1 can be maintained in good condition for a long period of time.

[0055] Unlike the above example, the bent base end portion 10c1 of the first fastener tape 10 may also be configured to press against the upper blade 110 of the slider 40. According to this configuration, in the fastener stringer 3 in which the first and second element rows 50, 60 are separated, the frictional force between the first fastener tape 10 and the slider 40 increases and the first element row 50 is more firmly clamped within the slider 40, making it easier to hold the slider 40 at a predetermined position on the first fastener tape 10.

[0056] Furthermore, as shown in Figure 18, after the first fastener tape 10 located behind the rear opening 102 formed at the rear of the slider body 100 exits the slider 40 from the rear opening 102, the bent portion 10c that had been pressed so as to elastically deform into an arch shape by the middle partition portion 113, etc. within the slider 40 (element guide path 103) is released, and the bent tip portion 10c2 protrudes to a position where it overlaps with the middle partition portion 113. As a result, when the first and second element rows are separated, the bent tip portions 10c2 protruding inward on the left and right make it difficult for the slider 40 to move rearward. That is, the slider 40 becomes even more difficult to move rearward due to free fall caused by weight or the like, or inertial forces associated with movement or movement.

[0057] Similarly, the bent tip 10c2 of the first fastener tape 10 located forward of the shoulder 101 formed at the front of the slider body 100 protrudes to a position where it overlaps with the connecting post 130. As a result, when the first and second element rows are separated, the bent tip portions 10c2 protruding inward on the left and right make it difficult for the slider 40 to move forward.

[0058] As described above, by maintaining the sliding position of the slider 40 sliding along the first fastener tape 10 when the first and second element rows 50, 60 are separated, it is possible to efficiently prevent the slider 40 from repeatedly moving back and forth unnecessarily (moving up and down on the paper surface of Figure 1) and thereby premature deterioration of the bent portion 10c of the first fastener tape 10. In the above example, an example was described in which the slider 40 slides along the first fastener tape 10 when the first and second element rows 50, 60 are separated, but the slider 40 may also be configured to slide along the second fastener tape 20.

[0059] (Second embodiment) Next, differences between the configuration of the slide fastener of the second embodiment and the above-described examples will be described with reference to Fig. 19. Fig. 19 is a cross-sectional view of a main part of the slide fastener of the second embodiment, showing the state in which the first and second element rows are engaged with each other. The slide fastener 1 according to the second embodiment differs from the first embodiment in that first and second waterstop films 70, 80 are provided on the first and second fastener tapes 10, 20. Since the other configurations of the second embodiment are the same as those of the first embodiment, the same reference numerals as those of the first embodiment are used in the drawings to omit or simplify the description thereof.

[0060] 19, the slide fastener 1 of the second embodiment further includes a first water-stopping film 70 (first water-stopping layer) provided on the surface 13 of the first fastener tape 10, and a second water-stopping film 80 (second water-stopping layer) provided on the surface 23 of the second fastener tape 20. Therefore, the slide fastener 1 of this embodiment is a waterproof fastener having water-stopping properties.

[0061] The pair of left and right first and second waterstop films 70 are elongated like the first and second fastener tapes 10, 20, and each have a back surface 71, 81 (first main waterstop surface) and a front surface 73, 83 (second main waterstop surface) opposite the back surface 71, 81. The first and second waterstop films 70 are formed so as to cover the entire surfaces 13, 23 of the first and second fastener tapes 10, 20. In this embodiment, the front-to-rear dimensions and width dimensions of the first and second waterstop films 70 and the first and second fastener tapes 10, 20 are approximately the same.

[0062] The first and second waterstop films 70 are formed by joining a waterstop layer such as a thermosetting polyurethane film to the surfaces 13, 23 of the first and second fastener tapes 10, 20, to which the first and second element rows 50, 60 are sewn, by adhesion, welding, etc. Here, the slide fastener 1 is in a state in which the first and second fastener tapes 10, 20 have a common waterstop layer (first and second waterstop films 70, 80) joined integrally thereto.

[0063] Thereafter, a water repellent agent is applied to the slide fastener 1 by the following method. For example, the fastener stringers 3, 5 may be guided by being wound around the circumferential surface of a guide roller (not shown) and then continuously passed through a container filled with the water repellent agent, thereby soaking the fastener stringers in the water repellent agent. In this process, the water repellent agent is efficiently applied to the entire surfaces of the first and second fastener tapes 10, 20, first and second element rows 50, 60, core cord 32, sewing thread 33, and waterstop layers (first and second waterstop films 70, 80) that make up the fastener stringers 3, 5. Next, the fastener stringers 3, 5 are pulled out of the container and passed continuously through a drying chamber, whereby the water repellent applied to the entire surface of the fastener stringers 3, 5 is first dried. Thereafter, the fastener stringers 3 and 5 in which the water repellent agent has been dried are successively passed through a heat treatment chamber to heat-treat the dried water repellent agent. This heat treatment causes fusion and adhesion between all of the base materials of the first and second fastener tapes 10, 20, the first and second element rows 50, 60, the core cord 32, the sewing thread 33, and the water-stopping layers (first and second water-stopping films 70, 80) and the water-repellent agent.

[0064] Next, the slide fastener 1 after the heat treatment is removed, and the single waterstop layer (first and second waterstop films 70, 80) connecting the pair of left and right fastener stringers 3, 5 is cut lengthwise along the interlocking portion where the first and second element rows 50, 60 interlock, dividing it into two, left and right halves, using a cutting device such as a cutter. In this way, the pair of left and right first and second waterstop films 70, 80 is formed.

[0065] As shown in Figure 19, when the first and second element rows 50, 60 are interlocked, the first and second fastener tapes 10, 20 are designed to overlap the interlocking center O, and the first and second water-stopping films 70, 80 are designed to overlap the interlocking center O.

[0066] When the slider 40 is moved upward from a state in which the first and second element rows 50, 60 are separated, the pair of left and right first and second element rows 50, 60 mesh with each other as shown in FIG. At this time, the widthwise end portions 10a, 70a of the first fastener tape 10 and the first waterproof film 70 extend toward the second fastener tape 20 (one widthwise end side) from the center of engagement O of the first and second element rows 50, 60, and the widthwise end portions 20a, 80a of the second fastener tape 20 and the second waterproof film 80 extend toward the first fastener tape 10 (one widthwise end side) from the center of engagement O, so that the widthwise end portions 10a, 70a and the widthwise end portions 20a, 80a press against each other in the width direction and deform, bending so as to protrude in an arched shape on the front side and adhering to each other.

[0067] 19, the first and second waterstop films 70, 80 have film bent portions 70c, 80c formed along the bent portions 10c, 20c of the first and second fastener tapes 10, 20. As shown in FIG. Each of the film bending portions 70c, 80c has a film bending base end 70c1, 80c1 and a film bending tip end 70c2, 80c2.

[0068] In this way, when the first and second element rows 50, 60 are interlocked with each other, the film bent portions 70c, 80c of the first and second waterstop films 70, 80 are in close contact with each other, so that no gaps (so-called partitions) are formed between the first and second fastener tapes 10, 20 and the first and second waterstop films 70, 80 as in conventional reverse-side slide fasteners. Therefore, when a user views the slide fastener 1 from the front side, the first and second element rows 50, 60 are not visible, resulting in an excellent appearance. Such a slide fastener 1 is particularly suitable for articles where aesthetic appearance is important, such as car seats, bags, and furniture.

[0069] Furthermore, since the first and second fastener tapes 10, 20 and the first and second water-stopping films 70, 80 are bent in an arched shape and adhere to each other, even if a force (so-called lateral pulling) acts on the first and second fastener tapes 10, 20 in a direction that moves them away from each other, the degree of bending will only be slightly weakened to the extent that the interlocking gap between the elements 31, 31 is canceled out, and the adhesion state between them will be maintained, so the good appearance of the slide fastener 1 will be maintained.

[0070] When the first and second element rows 50, 60 are interlocked with each other, the first and second fastener tapes and the first and second water-stopping films 70, 80 are bent in an arched shape, and the bent tip ends 70c2, 80c2 of the films are brought into close contact with each other, so that no gaps (partitions) are formed between the first and second fastener tapes 10, 20 and the first and second water-stopping films 70, 80, and liquid is prevented from entering through the partitions as in conventional technology.

[0071] 19, when the first and second element rows 50, 60 are interlocked with each other, one widthwise end face 10b and one widthwise end face 20b of the first and second fastener tapes 10, 20 and one widthwise end face 70b and one widthwise end face 80b of the first and second waterstop films 70, 80 face the element 31 side (rear side). The one widthwise end face 70b and one widthwise end face 80b of the first and second waterstop films 70, 80 may abut against the first and second element rows 50, 60. Furthermore, the surface 73 of one widthwise end 70a of the first water-stopping film 70 and the surface 83 of one widthwise end 80a of the second water-stopping film 80 are in close contact with each other on the engagement center O. This improves the liquid infiltration suppression effect.

[0072] Furthermore, by providing a first water-stopping film 70 on the surface 13 of the first fastener tape 10 and a second water-stopping film 80 on the surface 23 of the second fastener tape 20, and by forming film bends 70c and 80c on the first and second water-stopping films 70 and 80, respectively, the thickness of the first and second fastener tapes 10 and 20 is increased and the elasticity of the bends 10c and 20c is improved. As a result, when the first and second element rows separate, as shown in Figures 17 and 18, the sliding position of the slider 40 sliding along the first fastener tape 10 is more firmly maintained by frictional forces between the film bent tip portion 70c2 and the middle partition portion 113, etc.

[0073] As described above, the present specification discloses the following: (1) A first fastener tape (10) having a long shape and a back surface (11) and a front surface (13); a first element row (50) provided on the back surface (11) of one widthwise end (10a) of the first fastener tape (10); a bent portion (10c) formed by bending one end (10a) in the width direction of the first fastener tape in an arch shape toward the surface (13); Equipped with The bent portion (10c) presses at least a part of a slider bore (103) defined by at least the upper blade (110), the lower blade (120), the connecting post (130), and the flange portions (140a, 140b) of the slider (40) sliding along the first element row (50). Zipper stringer. According to this configuration, when the pair of fastener stringers 3, 5 are separated, the bent portion 10c of the first fastener tape 10 is pressed into the slider 40, so that the slider 40, which slides along the fastener stringer 3, can be held in the intended predetermined position.

[0074] (2) The bent portion (10c) is elastically deformable and presses at least a part of the inside of the slider bore (103) within the slider bore (103), so that the slider (40) can be fixed at any position in the longitudinal direction of the first element row (50). (1) A fastener stringer as described above. According to this configuration, the slider 40 that slides along the fastener stringer 3 can be held more reliably at the intended predetermined position.

[0075] (3) The upper blade (110) is formed with a partition (113) protruding toward the opposing surface of the lower blade (120), The bent portion (10c) presses against at least one of the upper blade (110) and the middle partition portion (113). A fastener stringer according to (1) or (2). According to this configuration, the bent portion 10c is easily pressed within the slider bore 103.

[0076] (4) The bending portion (10c) exerts a pressing force against the middle partition portion (113) that is greater than the pressing force against the upper blade (110). (3) A fastener stringer as described in (3). According to this configuration, the slider can be held at a predetermined position on the first fastener tape with an appropriate holding force that does not impede the sliding operation of the slider.

[0077] (5) The bent portion (10c) does not contact the upper blade (110) or does not press the upper blade (110) even if it contacts the upper blade (110), while pressing the middle partition portion (113). A fastener stringer according to (3) or (4). According to this configuration, the slider can be held at a predetermined position on the first fastener tape with an appropriate holding force that does not impede the sliding operation of the slider.

[0078] (6) A reaction force generated when the bent portion (10c) presses the upper blade (110) or the partition portion (113) presses a part of the first element row (50) against the slider bore (103). A fastener stringer according to any one of (3) to (5). According to this configuration, the slider can be stably held on the first fastener tape 10 side.

[0079] (7) A fastener stringer (3) according to any one of (1) to (6), A second fastener tape (20) that is elongated and has a back surface (21) and a front surface (23); a fastener stringer (5) including a second element row (60) provided on the back surface (21) of one widthwise end portion (20a) of the second fastener tape (20); the slider (40) is slidably provided on the first and second element rows (50, 60) extending in the front-rear direction, and slides forward to engage the first and second element rows (50, 60) and backward to separate the first and second element rows (50, 60); Equipped with one widthwise end (10a) of the first fastener tape (10) extends toward the second fastener tape (20) from the center of engagement (O) of the first and second element rows (50, 60), and one widthwise end (20a) of the second fastener tape (20) extends toward the first fastener tape (10) from the center of engagement (O), so that when the first and second element rows (50, 60) are engaged with each other, the bent portions (10c, 20c) formed at the one widthwise end (10a) of the first fastener tape (10) and the one widthwise end (20a) of the second fastener tape (20) come into close contact with each other. Slide fastener. According to this configuration, when the first and second element rows 50, 60 are interlocked, the first and second element rows 50, 60 can be covered by the bent portions 10c, 20c of the first and second fastener tapes 10, 20, which are in close contact with each other, thereby maintaining a good appearance.

[0080] (8) a first water stopping layer (70) provided on the surface (13) of the first fastener tape (10); a second water stopping layer (80) provided on the surface (23) of the second fastener tape (20); Equipped with (7) A slide fastener as described in (7). According to this configuration, no gaps are formed between the first and second fastener tapes 10, 20 and the first and second waterstop films 70, 80, and liquid can be prevented from entering between the first and second fastener tapes.

[0081] (9) When the first and second element rows (50, 60) are interlocked with each other, the film bent portions (70c, 80c) formed at one end (70a) in the width direction of the first water stopping layer (70) and one end (80a) in the width direction of the second water stopping layer (80) are in close contact with each other. (8) A slide fastener as described in (8). According to this configuration, the first and second fastener tapes 10, 20 and the first and second waterstop films 70, 80 can be more reliably brought into close contact with each other in a curved arched state.

[0082] (10) The slider (40) has the upper blade (110), the lower blade (120), and a connecting column (130) that connects the upper blade (110) and the lower blade (120) at their front ends, The upper blade (110) is provided with a middle partition (113) behind the connecting pillar (130), protruding from the upper blade (110) toward the lower blade (120), and extending in the front-rear direction. A slide fastener according to any one of (7) to (9). According to this configuration, the bent portion 10c of the first fastener tape 10 can be pressed against the upper blade 110 or the middle partition portion 113, so that the slider 40 sliding along the fastener stringer 3 can be held at the intended predetermined position.

[0083] (11) The upper blade (110) has first relief portions (111) provided between the connecting posts (130) and the partition portion (113) and between the left and right edge portions of the upper blade (110), respectively, and formed by recessing opposing surfaces (110a) facing the lower blade (120), The first recess (111) is provided near the center in the left-right direction of the opposing surface (110a). (10) A slide fastener according to (10). According to this configuration, the space formed by the first escape portion 111 prevents the portion of the bent portion 10c of the first fastener tape 10 that is visible when the first and second element rows 50, 60 are interlocked from sliding toward the slider 40, thereby maintaining a good appearance for a longer period of time.

[0084] (12) The partition (113) extends from the rear end of the connecting pillar (130) to the rear end of the upper blade (110). A slide fastener according to (10) or (11). According to this configuration, the bent portion 10c of the first fastener tape 10 can be pressed up to the rear opening 102 in the slider 40, thereby improving the holding force that holds the slider 40, which slides along the fastener stringer 3, in the intended position. [Explanation of symbols]

[0085] 1 Slide Fastener 3 Zipper stringer 5 Zipper stringer 10 First zipper tape 10a One end in the width direction 10b One end face in the width direction 10c Bend part 10c1 Bent proximal end 10c2 Bent tip 11 Back side 13 Surface 20 Second zipper tape 20a One end in the width direction 20b One end face in the width direction 20c bent part 20c1 Bent proximal end 20c2 Bent tip 21 Back side 13 Surface 31 Elements 31a Interlocking head 31b 1st leg 31c 2nd leg 31d Connecting part 32 Core cord 33 Sewing thread 40 Slider 42 Pull attachment part 43 Pull handle 50 First Element Column 60 Second Element Column 70 First water-stopping film (first water-stopping layer) 70a One end in the width direction 70b One end face in the width direction 70c film bend 70c1 Film bent base end 70c2 film bent tip 71 Back side 73 Surface 80 Second water-stopping film (second water-stopping layer) 80a One end in the width direction 80b One end in the width direction 80c film bend 80c1 Film bent base end 80c2 film bent tip 81 Back side 83 Surface 100 Slider body 101 Shoulder 102 Back door 103 Element guideway (slider diameter) 110 Upper wing plate 110a Opposite side 111 First Recess 113 Partition 113a Front of partition 113b Rear of partition 120 Lower wing plate 120a Opposite surface 121 Protrusion 130 Connecting column 131 Second Relief Section 132 Multilayered section 135 Support surface 140a flange 140b flange

Claims

1. A first fastener tape (10) that is elongated and has a back surface (11) and a front surface (13); a first element row (50) provided on the back surface (11) of one widthwise end (10a) of the first fastener tape (10); a bent portion (10c) formed by bending one end (10a) in the width direction of the first fastener tape in an arched shape toward the surface (13); Equipped with The bent portion (10c) presses at least a part of a slider bore (103) defined by at least an upper blade (110), a lower blade (120), a connecting column (130), and flange portions (140a, 140b) of the slider (40) sliding along the first element row (50). Zipper stringer.

2. the bending portion (10c) is elastically deformable and presses at least a part of the inside of the slider bore (103) within the slider bore (103), so that the slider (40) can be fixed at any position in the longitudinal direction of the first element row (50). The fastener stringer according to claim 1 .

3. The upper blade (110) is formed with a middle partition portion (113) protruding toward the opposing surface of the lower blade (120), The bent portion (10c) presses against at least one of the upper blade (110) or the middle partition portion (113). The fastener stringer according to claim 1 .

4. The bending portion (10c) has a pressing force that presses the middle partition portion (113) greater than a pressing force that presses the upper blade (110). The fastener stringer according to claim 3 .

5. The bending portion (10c) does not contact the upper blade (110) or does not press the upper blade (110) even if it contacts the upper blade (110), while pressing the middle partition portion (113). The fastener stringer according to claim 3 .

6. A reaction force generated when the bent portion (10c) presses the upper blade (110) or the middle partition portion (113) presses a part of the first element row (50) against the slider bore (103). The fastener stringer according to claim 3 .

7. A fastener stringer (3) according to any one of claims 1 to 6; a fastener stringer (5) including a second fastener tape (20) having an elongated shape and a back surface (21) and a front surface (23), and a second element row (60) provided on the back surface (21) of one widthwise end portion (20a) of the second fastener tape (20); the slider (40) is slidably provided on the first and second element rows (50, 60) extending in the front-rear direction, and slides forward to engage the first and second element rows (50, 60) and backward to separate the first and second element rows (50, 60); Equipped with one widthwise end (10a) of the first fastener tape (10) extends toward the second fastener tape (20) from the center of engagement (O) of the first and second element rows (50, 60), and one widthwise end (20a) of the second fastener tape (20) extends toward the first fastener tape (10) from the center of engagement (O), so that when the first and second element rows (50, 60) are engaged with each other, the bent portions (10c, 20c) formed at the one widthwise end (10a) of the first fastener tape (10) and the one widthwise end (20a) of the second fastener tape (20) come into close contact with each other. Slide fastener.

8. a first water stopping layer (70) provided on the surface (13) of the first fastener tape (10); a second water-stopping layer (80) provided on the surface (23) of the second fastener tape (20); Equipped with The slide fastener according to claim 7.

9. When the first and second element rows (50, 60) are interlocked with each other, film bent portions (70c, 80c) formed at one end (70a) in the width direction of the first water stopping layer (70) and one end (80a) in the width direction of the second water stopping layer (80) are in close contact with each other. The slide fastener according to claim 8.

10. The slider (40) has the upper blade (110), the lower blade (120), and a connecting column (130) that connects the upper blade (110) and the lower blade (120) at their front ends, The upper blade (110) is provided at the rear of the connecting column (130), and a middle partition portion (113) is formed, protruding from the upper blade (110) toward the lower blade (120) and extending in the front-rear direction. The slide fastener according to claim 7.

11. The upper blade (110) has first relief portions (111) provided between the connecting posts (130) and the partition portion (113) and between the left and right edge portions of the upper blade (110), respectively, and formed by recessing opposing surfaces (110a) facing the lower blade (120), The first recess (111) is provided near the center in the left-right direction of the opposing surface (110a). The slide fastener according to claim 10.

12. The partition (113) extends from the rear end of the connecting column (130) to the rear end of the upper blade (110). The slide fastener according to claim 10.

Images