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 Art

[0002] As types of slide fasteners, there are generally a normal type of slide fastener in which an element row is attached so as to be visible on the outside (front side) of a product, a reverse-use type of slide fastener in which an element row is attached to the inside (back side) of a product and is difficult to see, and a hidden type of slide fastener in which side edges of left and right fastener tapes are folded back in a U shape in the width direction and an element row is attached to the folded-back tape portion, etc. are known.

[0003] Reverse-use type and hidden type slide fasteners are suitably used for products such as various clothing, shoes, bags, furniture, etc. by taking advantage of the advantage that they do not interfere with the designability of the product due to their concealability. In recent years, they are also used for seat covers for various seats such as automobiles, trains, airplanes, etc. Patent Document 1 discloses an example of a reverse-use slide fastener including a pair of left and right fastener stringers and a slider capable of opening and closing the pair of left and right fastener stringers.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The slide fastener described in Patent Document 1 aims to maintain visibility by keeping the left and right fastener tapes in close contact, but when the left and right fastener stringers are separated, the slider can easily move up and down along the row of elements that make up the fastener stringer.

[0006] For example, vibrations caused by movement or exercise, or washing in a washing machine, can cause the slider to repeatedly move up and down unintentionally along the row of elements, leading to excessive friction within the slider and potentially accelerating the deterioration of the zipper tape. Another issue is that when attempting to engage a pair of left and right zipper tapes, the slider may easily move from its designated position, worsening work efficiency.

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

[0008] The above objective of the present invention is achieved by the following configuration. [1] A long, rectangular fastener tape (10) having a back surface (11) and a front surface (13), A first element row (50) is provided on the back surface (11) of one end (10a) in the width direction of the first fastener tape (10), The first fastener tape has a bent portion (10c) formed by bending one end (10a) in the width direction toward the surface (13), Equipped with, The bent portion (10c) presses against at least a portion of the slider diameter (103) of the slider (40) that slides along the first element row (50), which is divided by at least the upper wing plate (110), the lower wing plate (120), the connecting column (130), and the flange portions (140a, 140b). Zipper stringer. [2] The fastener stringer (3) described in [1], A fastener stringer (5) comprising: a long, elongated second fastener tape (20) having a back surface (21) and a front surface (23); and a second element row (60) provided on the back surface (21) of one end (20a) in the width direction of the second fastener tape (20); A slider (40) is slidably mounted on the first and second element rows (50, 60) extending in the front-rear direction, and slides in a forward direction that engages the first and second element rows (50, 60) and a rear direction that separates the first and second element rows (50, 60). Equipped with, The widthwise end (10a) of the first fastener tape (10) extends toward the second fastener tape (20) beyond the interlocking center (O) of the first and second element rows (50, 60), and the widthwise end (20a) of the second fastener tape (20) extends toward the first fastener tape (10) beyond the interlocking center (O), so that when the first and second element rows (50, 60) are interlocked, the bent portions (10c, 20c) formed on the widthwise end (10a) of the first fastener tape (10) and the 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, even when a pair of fastener stringers are separated, the slider that slides along the fastener tape can be held in the intended position. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a surface view showing a slider fastener using the slider according to the present invention. [Figure 2] Figure 2 is a cross-sectional view of the main part of the slide fastener shown in Figure 1, showing the state in which the first and second rows of elements are engaged. [Figure 3]Figure 3 is a perspective view showing the slider. [Figure 4] Figure 4 is a perspective view showing the slider. [Figure 5] Figure 5 is a side view showing the slider. [Figure 6] Figure 6 is a plan view showing the slider. [Figure 7] Figure 7 is a bottom view showing the slider. [Figure 8] Figure 8 is a cross-sectional view taken along line F-F of Figure 5 showing the lower wing plate. [Figure 9] Figure 9 is a cross-sectional view taken along line G-G of Figure 5 showing the upper wing plate. [Figure 10] Figure 10 is a cross-sectional view taken along line H-H of Figure 7 showing the element guide path. [Figure 11] Figure 11 is a cross-sectional view taken along line A-A of Figure 1 showing the state inside the slider body. [Figure 12] Figure 12 is a cross-sectional view taken along line B-B of Figure 1 showing the state inside the slider body. [Figure 13] Figure 13 is a cross-sectional view taken along line C-C of Figure 1 showing the state inside the slider body. [Figure 14] Figure 14 is a cross-sectional view taken along line D-D of Figure 1 showing the state inside the slider body. [Figure 15] Figure 15 is a cross-sectional view taken along line E-E of Figure 1 showing the state inside the slider body. [Figure 16] Figure 16 is a surface view showing the state where the slider is supported by one of the fastener strings. [Figure 17] Figure 17 is a cross-sectional view of the main part of the slide fastener, and is a cross-sectional view taken along line C-C of Figure 1 showing the state where the first and second element rows are separated. [Figure 18] Figure 18 is a cross-sectional view of the main part of the fastener tape and the slider with the elements omitted, and is a cross-sectional view taken along line I-I of Figure 1 showing the state where the first and second element rows are separated. [Figure 19] Figure 19 is a cross-sectional view of the main part of the slide fastener according to the second embodiment, and is a view showing the state where the first and second element rows are engaged. [Modes for carrying out the invention]

[0011] Hereinafter, slide fasteners to which fastener stringers according to each embodiment of the present invention are applied will be described in detail with reference to the drawings. In this specification, "front-to-back direction" refers to the sliding direction of the slider, which is the longitudinal direction of the slide fastener. Specifically, the direction in which the slider slides to engage the left and right rows of elements is defined as "front," and the direction in which the slider slides to separate the left and right rows of elements is defined as "rear." Furthermore, "left-right direction" refers to the direction in which a pair of element rows are arranged, which is perpendicular to the sliding direction of the slider, and can also be described as the width direction of the slide fastener. Furthermore, "vertical direction" refers to the direction perpendicular to the front-back and left-right directions, and can be rephrased as the thickness direction of the slider or fastener tape, or the height direction of the element row. "Vertical direction" can also be rephrased as "front-back direction."

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

[0013] As shown in Figures 1 and 2, the slide fastener 1 comprises a pair of left and right fastener stringers 3 and 5, and a slider 40 for opening and closing the pair of left and right fastener stringers 3 and 5.

[0014] The left and right pair of fastener stringers 3 and 5 each consist of a pair of left and right first and second fastener tapes 10 and 20, which are elongated and each has a back surface 11 and a front surface 13 and 23, and a first element row 50 provided on the back surface 11 of one end 10a in the width direction of the first fastener tape 10, and a second element row 60 provided on the back surface 21 of one end 20a in the width direction of the second fastener tape 20.

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

[0016] The slider 40 engages and disengages a pair of left and right first and second element rows 50, 60. The slider 40 comprises a slider body 100, a pull handle mounting portion 42 provided on the surface of the slider body 100, and a pull handle 43 attached to the pull handle mounting portion 42. As the slider 40 moves forward (upward in the drawing), the left and right pairs of first and second element rows 50 and 60 engage, as shown in Figure 2. Conversely, as the slider 40 moves backward (downward in the drawing), the left and right pairs of first and second element rows 50 and 60 separate. The slide fastener 1 may also be equipped with upper and lower stoppers (not shown). Alternatively, an opening device having a box bar and a box body may be provided instead of the lower stopper.

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

[0018] Element 31 includes a first leg portion 31b that extends from the front end of the engaging head 31a, which engages and disengages with the mating element 31, to the other end in the width direction and contacts the first and second fastener tapes 10 and 20; a second leg portion 31c that extends from the back end of the engaging head 31a to the other end in the width direction and does not contact the first and second fastener tapes 10 and 20; and a connecting portion 31d that connects the outer end in the width direction of the first leg portion 31b 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 parallel to each other.

[0019] Figure 2 shows the meshing centers O of the first and second element rows 50 and 60. These meshing centers O are the center positions when the elements 31, 31 mesh with each other, and coincide with the widthwise center of the slide fastener 1.

[0020] When the first and second element rows 50 and 60 are separated, one end face 10b in the width direction of the first fastener tape 10 extends toward the second fastener tape 20 side (one end in the width direction) beyond the position of the interlocking center O of the first and second element rows 50 and 60. Similarly, one end face 20b in the width direction of the second fastener tape 20 extends toward the first fastener tape 10 side (one end in the width direction) beyond the position of the interlocking center O. In other words, as shown in Figure 2, the first and second element rows 50 and 60 are designed to interlock with the interlocking center O, so that the first and second fastener tapes 10 and 20 overlap with the interlocking center O.

[0021] As a result, as shown in the upper part of Figure 1, the first and second fastener tapes 10 and 20 (first and second element rows 50 and 60) are separated, and by moving the slider 40 forward (upwards in the drawing), the first and second element rows 50 and 60 interlock as shown in Figure 2. At this time, one end 10a in the width direction of the first fastener tape 10 and one end 20a in the width direction of the second fastener tape 20 push against each other in the width direction and deform, bending to form a mountain-like projection on the front side and becoming tightly attached to each other.

[0022] Accordingly, as shown in Figure 2, the first and second fastener tapes 10 and 20 are bent in a parabolic shape toward the surfaces 13 and 23 at one end 10a and 20a in the width direction, forming bent portions 10c and 20c. Each bent portion 10c and 20c has a bent base end 10c1 and 20c1 and a bent tip end 10c2 and 20c2, and is formed to be elastically deformable.

[0023] With this configuration, when the first and second element rows 50 and 60 are interlocked, the bent ends 10c2 and 20c2 of the first and second fastener tapes 10 and 20 are in close contact with each other. As a result, unlike conventional reverse-use slide fasteners, no gap (so-called partition) is formed between the first and second fastener tapes 10 and 20. Therefore, when a user views the slide fastener 1 from the front, the first and second element rows 50 and 60 are not visible, resulting in a superior appearance. Such a slide fastener 1 is particularly suitable for items where aesthetics are important, such as car seats, bags, and furniture. Furthermore, when the first and second element rows 50 and 60 are separated, the slider 40, which slides along the first fastener tape 10 (or the second fastener tape 20), can be held in a predetermined position. More details will be described later.

[0024] Furthermore, since the first and second fastener tapes 10 and 20 are tightly pressed against each other by their curved portions 10c and 20c, even when a force acting to separate the first and second fastener tapes 10 and 20 (so-called lateral pulling) is applied to them, the tight contact is maintained, with only a slight decrease in the degree of bending, within the range where the interlocking gap between the elements 31 and 31 is canceled out. For this reason, even when lateral pulling is applied to the slide fastener 1, the good appearance of the slide fastener 1 can be maintained.

[0025] Furthermore, because bent portions 10c and 20c are formed at one end 10a and 20a in the width direction of the first and second fastener tapes 10 and 20, as shown in Figure 2, when the first and second element rows 50 and 60 are interlocked, the back surfaces 11 and 21 of the width direction end faces 10b and 20b of the first and second fastener tapes 10 and 20 and the first and second element rows 50 and 60 (elements 31) are spaced apart in the front-to-back direction, and first and second spaces T1 and T2 are defined between them, respectively. The provision of first and second spaces T1 and T2 allows the first and second fastener tapes 10 and 20 to be easily bent when the first and second element rows 50 and 60 are combined with the slider 40. Furthermore, the larger the first and second spaces T1 and T2, the larger the contact area between the surfaces 13 and 23 of one end 10a and one end 20a in the width direction of the first and second fastener tapes 10 and 20, suppressing the occurrence of gaps between the first and second fastener tapes 10 and 20. This results in a better appearance and improved waterproofing.

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

[0027] (Configuration of Slider 40) The following describes the specific configuration of the first embodiment of the slider fuselage 100 that constitutes the slider 40, based on Figures 3 to 10. Figure 3 is a perspective view showing the slider. Figure 4 is a perspective view showing the slider. Figure 5 is a side view showing the slider. Figure 6 is a top view showing the slider. Figure 7 is a bottom view showing the slider. Figure 8 is a cross-sectional view of the FF section of Figure 5 showing the lower wing plate. Figure 9 is a cross-sectional view of the GG section of Figure 5 showing the upper wing plate. Figure 10 is a cross-sectional view of the HH section of Figure 7 showing the element guide path.

[0028] The slider fuselage 100 comprises an upper wing plate 110 and a lower wing plate 120 that are spaced apart in the vertical direction and facing each other, a vertical connecting column 130 that connects the upper wing plate 110 and the lower wing plate 120 at their front ends, flange portions 140a that project downward along both left and right edges in the width direction of the upper wing plate 110, and flange portions 140b that project upward along both left and right edges in the width direction of the lower wing plate 120. As a result, the front of the slider body 100 has left and right shoulders 101 separated by a connecting column 130, and the rear of the slider body 100 has a rear opening 102. In addition, a roughly Y-shaped element guide passage 103 is formed between the upper wing plate 110 and the lower wing plate 120, connecting the left and right shoulders 101 and the rear opening 102, and the first and second element rows 50 and 60 are inserted through this element guide passage 103. The slider body 100 is molded from metal or synthetic resin. In other words, the element guide path 103, which is the slider opening through which the element is guided, is partitioned by at least the upper wing plate 110, the lower wing plate 120, the connecting column 130, and the flange portions 140a and 140b.

[0029] The upper wing plate 110 has a front-to-back partition portion 113 that is inserted between the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20, and a first relief portion 111 that forms a space for the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20 to be retracted, on the surface facing the lower wing plate 120 (the opposing surface 110a of the upper wing plate 110). Second relief portions 131 are formed on both the left and right sides of the upper part of the connecting column 130 to create a space for retracting the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20. Support surfaces 135 are formed on both the left and right sides of the lower part of the connecting column 130 to maintain the posture of the element 31. On the lower wing plate 120, a projection 121 is formed on the surface facing the upper wing plate 110 (the opposing surface 120a of the lower wing plate 120) to support the second leg portion 31c of each element 31 that is engaged within the element guide path 103. The configurations of the partition section 113, the first relief section 111, the second relief section 131, the support surface 135, and the protruding section 121 will be described in detail below.

[0030] The partition portion 113 is positioned in the left-right center of the opposing surface 110a of the upper wing plate 110, and is a protruding piece that projects downward from the opposing surface 110a of the upper wing plate 110 toward the opposing surface 120a of the lower wing plate 120. The partition portion 113 is formed in a narrow plate shape that extends in the front-rear direction from the rear end of the connecting column 130 to the rear end (rear opening 102) of the upper wing plate 110. In the illustrated example, the partition portion 113 has a front partition portion 113a that forms from the front end to the middle in the front-rear direction, and a rear partition portion 113b that extends from the rear end of the front partition portion 113a to the rear end of the upper wing plate 110, and has a smaller downward projection than the front partition portion 113a. This configuration can be seen in Figures 4, 9 and 10, etc.

[0031] The front portion 113a of the partition protrudes slightly more downward than the flange portion 140a of the upper wing plate 110. Therefore, the lower end of the front portion 113a of the partition is positioned slightly closer to the lower wing plate 120 than the lower end of the flange portion 140a of the upper wing plate 110. This configuration can be seen in Figure 5. On the other hand, the amount of downward protrusion of the rear portion 113b of the partition is smaller than that of the flange portion 140a of the upper wing plate 110. For this reason, the lower end of the rear portion 113b of the partition is positioned closer to the upper wing plate 110 than the lower end of the flange portion 140a of the upper wing plate 110. Furthermore, the lower end of the partition section 113 has a smooth R-shape. This configuration can be seen in Figure 7. Furthermore, in the example shown in Figure 9, the front portion 113a of the partition is formed to be slightly longer in the front-to-back direction than the rear portion 113b of the partition. Furthermore, the partition portion 113 only needs to be formed such that the amount of protrusion toward the lower wing plate 120 gradually decreases toward the rear, and is not limited to the configuration shown in the figure.

[0032] According to this configuration, by making the amount of downward protrusion of the rear part 113b of the partition smaller than that of the front part 113a of the partition, even if an opening mechanism or the like (not shown) is provided on the slide fastener 1, space can be secured to accommodate the opening mechanism or the like at the rear of the element guide path 103. In other words, the partition part 113 can be provided on the slider body 100 regardless of whether or not an opening mechanism is present.

[0033] The first relief portion 111 is a groove extending in the front-rear direction, formed by recessing the left-right inner surface 110a of the upper wing plate 110. The first relief portions 111 are provided in pairs on the left and right sides adjacent to the left and right outer surfaces of the connecting column 130 and the partition portion 113, and extend in the front-rear direction from the front end (shoulder 101) to the rear end (rear opening 102) of the upper wing plate 110. As a result, the thickness of the portion of the upper wing plate 110 in which the first relief portion 111 is formed is thinner than the thickness of the other portions. In other words, the first relief portion 111 formed on the opposing surface 110a of the upper wing plate 110 is located between the flange portions 140a provided on the left and right edges of the upper wing plate 110 and the connecting column 130 and partition portion 113 provided in the left and right center of the upper wing plate 110, and is located near the connecting column 130 or the partition portion 113.

[0034] Furthermore, the first relief sections 111 are each formed to curve outward to the left and right, toward the front, along the flange portion 140a of the upper wing plate 110. In other words, the pair of left and right first relief sections 111 are formed to curve away from each other from the rear opening 102 toward the shoulder opening 101. This configuration can be seen in Figure 9. Also, the width of the first relief sections 111 is wider at the shoulder opening 101 than at the rear opening 102.

[0035] According to this configuration, the first relief portion 111 is a space located on the left and right inner sides of the upper part of the element guide path 103, which allows the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20 to be relieved so as not to come into strong contact with the upper wing plate 110 within the slider body 100. This configuration can be seen in Figures 9, 12 to 15. Because the width of the first relief section 111 is wider at the shoulder 101 than at the rear opening 102, the widthwise ends 10a and 20a of the non-interlocking mountain-shaped first and second fastener tapes 10 and 20 are less likely to interfere with the shoulder 101 and the connecting column 130. Furthermore, since the first relief portion 111 is formed from the front end of the upper wing plate 110, the widthwise ends 10a, 20a of the mountain-shaped first and second fastener tapes 10, 20 can be supported (guided) so that they smoothly enter the shoulder 101 of the slider 40. Similarly, since the first relief portion 111 extends to the rear end of the upper wing plate 110, it can support (guide) the smooth exit of the widthwise end portions 10a and 20a of the tightly fitting mountain-shaped first and second fastener tapes 10 and 20 from the rear opening 102.

[0036] The second relief section 131 is formed by cutting out the upper rear portion of the vertically connecting column 130, which has a rectangular (elliptical) cross-section that is elongated in the front-to-back direction, inwards and toward the rear. By forming a pair of second relief sections 131 on the left and right of the connecting column 130, the upper rear side of the connecting column 130 is formed in an acute-angled mountain shape or a V-shape. In addition, a stepped section 132 is formed in the middle of the upper rear side of the connecting column 130 in the vertical direction, extending in the front-rear direction along the lower ends of the pair of second relief sections 131. Refer to Figure 8 for this configuration.

[0037] The stepped portion 132 forms a plane at the middle of the rear of the connecting column 130 in the vertical direction, extending in a direction intersecting the extending direction of the connecting column 130. The plane forming the stepped portion 132 also functions as a guide surface that guides the first and second fastener tapes 10 and 20 to bend smoothly into a mountain shape by contacting one end 10a and 20a in the width direction of the first and second fastener tapes 10 and 20.

[0038] The vertical position of the stepped portion 132 on the connecting column 130 should preferably be within a range of 30-70% from the lower end of the connecting column 130. In other words, the vertical position of the stepped portion 132 is formed to be approximately half the vertical height of the element 31 guided by the element guide path 103. With this configuration, the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20 are more likely to come into contact with the stepped portion 132. This prevents the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20 from getting caught and entangled between the interlocking head 31a of the element 31 and the connecting column 130.

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

[0040] According to this configuration, the second relief portion 131 is formed by trimming the rear upper part of the connecting column 130, making the processing of the second relief portion 131 easy and inexpensive.

[0041] The support surface 135 is provided on the left and right outer sides of the lower part of the connecting column 130 and is a curved surface that extends along the front-rear direction from the front end to the rear end of the connecting column 130. The support surface 135 is formed to support the left and right inner sides of the element 31 that is guided from the shoulder 101 to the element guide path 103 by curving along the back side end of the meshing head 31a of the element 31.

[0042] Within the element guide path 103, as the element 31 moves rearward from the shoulder 101, the engaging head 31a tilts toward the lower wing plate 120, and the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20 may get caught between the element 31 and the connecting column 130. As a result, the first and second fastener tapes 10 and 20 overlap within the element guide path 103, which can cause 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 its position until the first and second element rows 50 and 60 engage, thereby efficiently preventing an increase in the sliding resistance of the slider 40. This configuration can be seen in Figure 15, which will be described later.

[0043] The protruding portion 121 is formed at the left-right center of the opposing surface 120a of the lower wing plate 120, extending in the front-rear direction from the rear end of the connecting column 130 to the rear opening 102, and protruding from the opposing surface 120a of the lower wing plate 120 toward the upper wing plate 110. The protruding portion 121 serves as a guide surface on which the second leg portion 31c of each element 31, which constitutes the first and second element rows 50 and 60, is placed after the element 31 is engaged with the slider body portion 100. The left-right width of the protruding portion 121 is approximately the same as the connecting column 130 directly behind the connecting column 130, and is formed to narrow as it approaches the rear opening 102. Refer to Figure 8 for this configuration.

[0044] (Mechanism of Action and Effects) Next, the opening and closing operation of the first and second element rows 50 and 60 via the slider body 100 will be described based on Figures 1 and 11 to 15. Figure 11 is a cross-sectional view AA of Figure 1 showing the state inside the slider body. Figure 12 is a cross-sectional view BB of Figure 1 showing the state inside the slider body. Figure 13 is a cross-sectional view CC of Figure 1 showing the state inside the slider body. Figure 14 is a cross-sectional view DD of Figure 1 showing the state inside the slider body. Figure 15 is a cross-sectional view EE of Figure 1 showing the state inside the slider body.

[0045] When the slider 40 is closed by sliding it forward along the slide fastener 1, the slider body 100 can engage the first and second element rows 50 and 60, which are spaced apart to the left and right.

[0046] To explain in more detail, when the slider 40 is closed, first the first element row 50 is guided to the element guide path 103 from one side of the shoulder 101, and then the second element row 60 is guided to the element guide path 103 from the other side of the shoulder 101. In this case, the element guide path 103 has space on the upper wing plate 110 side for the first and second fastener tapes 10 and 20 to be retracted due to the formation of the first relief portion 111 in the upper wing plate 110. Therefore, even if the first and second fastener tapes 10 and 20 to which the first and second element rows 50 and 60 are sewn are formed to be longer than usual and curved in a mountain shape (U shape), the first and second fastener tapes 10 and 20 are smoothly guided from the shoulder 101 to the element guide path 103 without getting caught. Refer to Figure 11 for this configuration. Furthermore, since the first relief portion 111 extends from the front end to the rear end of the upper wing plate 110, the first and second fastener tapes 10 and 20 are less likely to come into contact with the opposing surface 110a of the upper wing plate 110, resulting in smoother sliding of the slider 40. This configuration can be seen in Figures 11 to 15.

[0047] Next, the first and second element rows 50 and 60, guided from the shoulder 101 to the element guide path 103, are guided to gradually move closer together in the left-right direction as they move backward. The first element row 50 and the second element row 60 are guided to the point where the Y-shaped element guide path 103 merges (the rear end of the connecting column 130), allowing their elements 31 to interlock. In this configuration, the element guide path 103 has a second relief portion 131 formed on the connecting column 130, which provides space for the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20 to be retracted inward (towards the connecting column 130) in the left-right direction opposite to each other. This prevents the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20 from coming into strong contact with the upper wing plate 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 column 130 of the element guide path 103, the first and second element rows 50 and 60 interlock, causing one end 10a in the width direction of the first fastener tape 10 and one end 20a in the width direction of the second fastener tape 20 to push against each other in the width direction and deform, bending so that a mountain-like projection is formed on the front side. At this time, the partition portion 113 provided on the upper wing plate 110 is inserted between the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20, thereby ensuring that the first and second fastener tapes 10 and 20 are bent reliably. As a result, the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20 overlap each other in the vertical direction without bending, which effectively and reliably prevents a sudden increase in sliding resistance. This configuration can be seen in Figures 13 and 14.

[0049] Furthermore, behind the connecting column 130 of the element guide path 103, a projection 121 provided on the opposing surface 120a of the lower wing plate 120 allows the element 31, which is engaged by the slider body 100, to be brought closer to the opposing surface of the upper wing plate 110. This prevents the first and second fastener tapes 10 and 20 from overlapping and entering the gap formed between the lower end of the partition portion 113 and the first leg portion 31b of the engaged element 31. In other words, the partition portion 113 can be inserted more reliably between the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20, and the widthwise ends 10a and 20a of the first and second fastener tapes 10 and 20 can be bent smoothly. This configuration can be seen in Figures 13 and 14.

[0050] Furthermore, when the slider 40 is slid backward along the slide fastener 1, the slider body 100 can switch the engaged first and second element rows 50 and 60 to a separated left and right state. In other words, the open and closed states of the left and right pair of fastener stringers 3 and 5 can be switched via the slider body 100. Refer to Figure 1 for this configuration. As a result, even if the first and second fastener tapes 10 and 20 are formed to be long, the slider 40 can be opened and closed smoothly.

[0051] Next, based on Figures 16 to 18, the function 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 and 60 are separated will be explained. Figure 16 is a surface view showing the slider supported by one of the fastener stringers. Figure 17 is a cross-sectional view of the main part of the slide fastener, and is a cross-sectional view CC of Figure 1 showing the state in which the first and second element rows are separated. Figure 18 is a cross-sectional view of the main part of the fastener tape and slider with the elements omitted, and is a cross-sectional view II of Figure 1 showing the state in which the first and second element rows are separated.

[0052] As shown in Figure 17, in the state where the first and second element rows are separated, the bent tip portion 10c2 formed at one end 10a in the width direction of the first fastener tape 10 is pressed against the partition portion 113 inside the slider 40. As a result, the sliding position of the slider 40, which slides along the first fastener tape 10, is maintained by the frictional force between the bent tip portion 10c2 and the partition portion 113.

[0053] At this time, the curved portion 10c is pushed in a direction that causes it to collapse, so when the curved tip portion 10c2 presses against the partition portion 113 inside the slider 40, the reaction force causes the elements 31 constituting the first element row 50 to be pressed towards 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 between the curved portion 10c and the lower wing plate 120 (or the flange portion 140b constituting the lower wing plate 120). This allows the sliding position of the slider 40, which slides along the first fastener tape 10, to be maintained at a predetermined position.

[0054] Furthermore, as shown in Figure 17, the bent base end 10c1 of the first fastener tape 10 is positioned in the space formed by the first relief portion 111 formed in the upper wing plate 110 of the slider 40. Therefore, the bent base end 10c1 and the upper wing plate 110 are either not in contact or, even if they are in contact, are not pressed against the upper wing plate 110. In other words, since only the bent tip portion 10c2 of one end 10a in the width direction of the first fastener tape 10 contacts and slides against the partition portion 113 of the slider 40, the bent base end portion 10c1 is less prone to deterioration compared to the bent tip portion 10c2. Here, as shown in Figure 2, when the first and second element rows 50 and 60 interlock, the bent base ends 10c1 and 20c1 are visible, while the bent tip ends 10c2 and 20c2 are pressed against each other and in close contact, 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 example described above, the bent base end 10c1 of the first fastener tape 10 may also be pressed against the upper wing plate 110 of the slider 40. With this configuration, in the fastener stringer 3 when the first and second element rows 50 and 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 held within the slider 40, making it easier for the slider 40 to be held in a predetermined position on the first fastener tape 10.

[0056] Furthermore, as shown in Figure 18, the first fastener tape 10, located behind the rear opening 102 formed at the rear of the slider body 100, exits the slider 40 through the rear opening 102. At this point, the bent portion 10c, which was pressed by the partition portion 113 etc. within the slider 40 (element guide path 103) to elastically deform into a mountain shape, is released, causing the bent tip portion 10c2 to protrude to a position where it overlaps with the 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 sides make it difficult for the slider 40 to move backward. In other words, the slider 40 becomes more difficult to move backward due to free fall due to weight, inertial forces associated with motion and movement, etc.

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

[0058] As described above, by maintaining the sliding position of the slider 40 that slides along the first fastener tape 10 when the first and second element rows 50 and 60 are separated, it is possible to efficiently prevent the slider 40 from unnecessarily repeating back-and-forth movements (movement in the vertical direction of the paper in Figure 1), which would accelerate the deterioration of the bent portion 10c of the first fastener tape 10. In the example described above, the slider 40 slides along the first fastener tape 10 when the first and second element rows 50 and 60 are separated. However, the slider 40 may also slide along the second fastener tape 20.

[0059] (Second Embodiment) Next, with reference to Figure 19, the differences between the configuration of the slide fastener of the second embodiment and the example described above will be explained. Figure 19 is a cross-sectional view of the main part of the slide fastener according to the second embodiment, showing the state in which the first and second element rows are engaged. The slide fastener 1 according to the second embodiment differs from the first embodiment in that the first and second waterproof films 70 and 80 are provided on the first and second fastener tapes 10 and 20. The other components of the second embodiment are the same as those of the first embodiment, so their descriptions are omitted or simplified by using the same reference numerals as in the first embodiment in the drawings.

[0060] As shown in Figure 19, the slide fastener 1 of the second embodiment further comprises a first watertight film 70 (first watertight layer) provided on the surface 13 of the first fastener tape 10, and a second watertight film 80 (second watertight layer) provided on the surface 23 of the second fastener tape 20. Therefore, the slide fastener 1 of this embodiment is a watertight fastener with watertight properties.

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

[0062] The first and second waterproof films 70 are formed by bonding and integrating a waterproof layer, such as a thermosetting polyurethane film, to the surfaces 13 and 23 of the first and second fastener tapes 10 and 20, to which the first and second element rows 50 and 60 are sewn, by adhesive, welding, or other means. Here, the slide fastener 1 is in a state in which a common waterproof layer (first and second waterproof films 70 and 80) is integrally bonded to the first and second fastener tapes 10 and 20.

[0063] Subsequently, the water-repellent agent is applied to the slide fastener 1 by the following method. For example, the fastener stringers 3 and 5 may be guided by being wound around the circumferential surface of a guide roller (not shown) and continuously passed through a container filled with the water-repellent agent, thereby immersing them in the agent. In this process, the water-repellent agent is efficiently applied to the entire surface of the first and second fastener tapes 10 and 20, the first and second element rows 50 and 60, the core cord 32, the sewing thread 33, and the waterproof layers (first and second waterproof films 70 and 80) that constitute the fastener stringers 3 and 5. Next, the zipper stringers 3 and 5 are lifted out of the container and passed through the drying chamber in a continuous manner, thereby first drying the water-repellent agent applied to the entire surface of the zipper stringers 3 and 5. Subsequently, the zipper stringers 3 and 5, after the water-repellent agent has finished drying, are passed through the heat treatment chamber in a continuous manner to heat-treat the dried water-repellent agent. In this heat treatment, fusion and adhesion are performed between all the base materials and the water repellent, including 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).

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

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

[0066] By moving the slider 40 upward from a state where the first and second element rows 50 and 60 are separated, the left and right pairs of first and second element rows 50 and 60 interlock, as shown in Figure 19. In this case, the widthwise ends 10a and 70a of the first fastener tape 10 and the first waterproof film 70 extend toward the second fastener tape 20 side (widthwise end side) from the interlocking center O of the first and second element rows 50 and 60, and the widthwise ends 20a and 80a of the second fastener tape 20 and the second waterproof film 80 extend toward the first fastener tape 10 side (widthwise end side) from the interlocking center O. As a result, the widthwise ends 10a and 70a and the widthwise ends 20a and 80a deform by pressing against each other in the widthwise direction, bending to form a mountain-like projection on the front side and adhering tightly to each other.

[0067] Accordingly, as shown in Figure 19, the first and second waterproof films 70 and 80 have film bends 70c and 80c that are aligned with the bends 10c and 20c of the first and second fastener tapes 10 and 20. Each film bending portion 70c, 80c has a film bending base end portion 70c1, 80c1 and a film bending tip end portion 70c2, 80c2.

[0068] In this way, when the first and second element rows 50 and 60 are interlocked, the film bends 70c and 80c of the first and second waterproof films 70 and 80 adhere closely to each other. Therefore, unlike conventional reverse-use slide fasteners, no gap (so-called partition) is formed between the first and second fastener tapes 10 and 20 and the first and second waterproof films 70 and 80. Consequently, when a user views the slide fastener 1 from the front, the first and second element rows 50 and 60 are not visible, resulting in a superior appearance. Such a slide fastener 1 is particularly suitable for items where aesthetics are important, such as car seats, bags, and furniture.

[0069] Furthermore, since the first and second fastener tapes 10 and 20 and the first and second waterproof films 70 and 80 bend in a mountain-like shape and adhere closely to each other, even if a force acting on the first and second fastener tapes 10 and 20 in a direction that separates them (so-called lateral pulling), the degree of bending is only slightly reduced within the range where the interlocking gap between the elements 31 and 31 is canceled out, and the close adhesion between them is maintained, thus preserving the good appearance of the slide fastener 1.

[0070] When the first and second element rows 50 and 60 are interlocked, the first and second fastener tapes and the first and second waterproof films 70 and 80 bend in a mountain shape, and the bent ends 70c2 and 80c2 of the films adhere closely to each other. As a result, no gap (partition) is formed between the first and second fastener tapes 10 and 20 and the first and second waterproof films 70 and 80, and liquid entry through the partition is suppressed, as in the conventional technology.

[0071] Furthermore, as shown in Figure 19, when the first and second element rows 50 and 60 are interlocked, the widthwise end faces 10b and 20b of the first and second fastener tapes 10 and 20, and the widthwise end faces 70b and 80b of the first and second waterproof films 70 and 80 face the element 31 side (back side). The widthwise end faces 70b and 80b of the first and second waterproof films 70 and 80 may also come into contact with the first and second element rows 50 and 60. Furthermore, the surface 73 of one end 70a in the width direction of the first waterproofing film 70 and the surface 83 of one end 80a in the width direction of the second waterproofing film 80 are in close contact with each other on the interlocking center O. Therefore, the liquid intrusion suppression effect can be improved.

[0072] Furthermore, by providing a first waterproof film 70 on the surface 13 of the first fastener tape 10 and a second waterproof film 80 on the surface 23 of the second fastener tape 20, and by forming film bending portions 70c and 80c on the first and second waterproof films 70 and 80, the thickness of the first and second fastener tapes 10 and 20 is increased, and the elasticity of the bending portions 10c and 20c is improved. As a result, as shown in Figures 17 and 18, when the first and second element rows are separated, the sliding position of the slider 40 that slides along the first fastener tape 10 is more firmly held by the frictional force between the film bent end portion 70c2 and the partition portion 113.

[0073] As described above, the following matters are disclosed in this specification: (1) A long, rectangular fastener tape (10) having a back surface (11) and a front surface (13), A first element row (50) is provided on the back surface (11) of one end (10a) in the width direction of the first fastener tape (10), The first fastener tape has a bent portion (10c) formed by bending one end (10a) in the width direction toward the surface (13), Equipped with, The bent portion (10c) presses against at least a portion of the slider diameter (103) of the slider (40) that slides along the first element row (50), which is divided by at least the upper wing plate (110), the lower wing plate (120), the connecting column (130), and the flange portions (140a, 140b). Zipper stringer. With this configuration, when the pair of fastener stringers 3 and 5 are separated, the bent portion 10c of the first fastener tape 10 is pressed into the slider 40, so that the slider 40 sliding along the fastener stringer 3 can be held in the intended predetermined position.

[0074] (2) The bent portion (10c) is elastically deformable and presses against at least a part of the inside of the slider diameter (103) within the slider diameter (103), and the slider (40) is fixed at any position in the longitudinal direction of the first element row (50), (1) The zipper stringer described above. This configuration allows the slider 40, which slides along the fastener stringer 3, to be held more reliably in the intended position.

[0075] (3) The upper wing plate (110) has a partition portion (113) that protrudes toward the opposite surface of the lower wing plate (120), The bent portion (10c) presses against at least one of the upper wing plate (110) or the partition portion (113). (1) or (2) the zipper stringer. With this configuration, the bent portion 10c is more easily pressed within the slider opening 103.

[0076] (4) The bending portion (10c) has a greater pressing force on the partition portion (113) than the pressing force on the upper wing plate (110). (3) The zipper stringer described above. With this configuration, the slider can be held in place at a predetermined position on the first fastener tape with an appropriate holding force that does not hinder the sliding operation of the slider.

[0077] (5) The bent portion (10c) does not contact the upper wing plate (110), or does not press against it even if it does contact it, while the partition portion (113) presses against it. (3) or (4) The fastener stringer described above. With this configuration, the slider can be held in place at a predetermined position on the first fastener tape with an appropriate holding force that does not hinder the sliding operation of the slider.

[0078] (6) Due to the reaction force of the bent portion (10c) pressing against the upper wing plate (110) or the partition portion (113), a part of the first element row (50) is pressed against the slider opening (103). The zipper stringer described in any one of (3) to (5). With this configuration, the slider can be stably held on the first fastener tape 10 side.

[0079] (7) A zipper stringer (3) as described in any one of (1) to (6), A second fastener tape (20) is elongated and has a back surface (21) and a front surface (23), A fastener stringer (5) comprising a second element row (60) provided on the back surface (21) of one end (20a) in the width direction of the second fastener tape (20), A slider (40) is slidably mounted on the first and second element rows (50, 60) extending in the front-rear direction, and slides in a forward direction that engages the first and second element rows (50, 60) and a rear direction that separates the first and second element rows (50, 60). Equipped with, The widthwise end (10a) of the first fastener tape (10) extends toward the second fastener tape (20) beyond the interlocking center (O) of the first and second element rows (50, 60), and the widthwise end (20a) of the second fastener tape (20) extends toward the first fastener tape (10) beyond the interlocking center (O), so that when the first and second element rows (50, 60) are interlocked, the bent portions (10c, 20c) formed on the widthwise end (10a) of the first fastener tape (10) and the widthwise end (20a) of the second fastener tape (20) come into close contact with each other. Slide fastener. With this configuration, when the first and second element rows 50 and 60 interlock, the bent portions 10c and 20c of the first and second fastener tapes 10 and 20, which are in close contact with each other, can cover the first and second element rows 50 and 60, thus maintaining a good appearance.

[0080] (8) A first watertight layer (70) provided on the surface (13) of the first fastener tape (10), The second waterproof layer (80) provided on the surface (23) of the second fastener tape (20), Equipped with, (7) The slide fastener described above. With this configuration, no gaps are formed between the first and second fastener tapes 10 and 20 and the first and second waterproof films 70 and 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, the film bends (70c, 80c) formed on one end (70a) in the width direction of the first watertight layer (70) and one end (80a) in the width direction of the second watertight layer (80) are in close contact with each other. (8) The slide fastener described above. This configuration makes it possible to more reliably attach the first and second fastener tapes 10 and 20 and the first and second waterproof films 70 and 80 in a curved, mountain-like shape.

[0082] (10) The slider (40) has an upper wing plate (110), a lower wing plate (120), and a connecting column (130) that connects the upper wing plate (110) and the lower wing plate (120) at the front end, The upper wing plate (110) has a partition portion (113) provided behind the connecting column (130), which protrudes from the upper wing plate (110) toward the lower wing plate (120) and extends in the front-rear direction. A slide fastener as described in any one of (7) to (9). With this configuration, the bent portion 10c of the first fastener tape 10 can be pressed against the upper wing plate 110 or the partition portion 113, thereby allowing the slider 40 that slides along the fastener stringer 3 to be held in the intended predetermined position.

[0083] (11) The upper wing plate (110) has a first relief portion (111) which is provided between the connecting column (130) and the partition portion (113) and the left and right edges of the upper wing plate (110), and is formed by recessing the opposing surface (110a) that faces the lower wing plate (120), The first relief portion (111) is provided near the center in the left-right direction of the opposing surface (110a), (10) The slide fastener described above. With this configuration, the space formed by the first relief 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 and 60 are engaged from sliding towards the slider 40, thus allowing the appearance to be maintained in good condition for a longer period of time.

[0084] (12) The partition portion (113) extends from the rear end of the connecting column (130) to the rear end of the upper wing plate (110), The slide fastener described in (10) or (11). With this configuration, the bent portion 10c of the first fastener tape 10 can be pressed against the rear opening 102 inside the slider 40, thereby improving the holding force that keeps the slider 40, which slides along the fastener stringer 3, in the intended predetermined position. [Explanation of symbols]

[0085] 1. Slide fastener 3 Zipper Stringer 5 Zipper stringer 10. First fastener 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 fastener 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 string 33 Sewing thread 40 Slider 42 Handle mounting section 43 Pull handle 50 First Element Column 60 Second Element Row 70. First watertight film (first watertight layer) 70a One end in the width direction 70b One end face in the width direction 70c film bending section 70c1 Film bending base 70c2 Film bent tip 71 Back side 73 Surface 80. Second waterproofing film (second waterproofing layer) 80a One end in the width direction 80b One end in the width direction 80c film bending section 80c1 Film bending base 80c2 Film bending tip 81 Back side 83 Surface 100 Slider Body 101 Shoulder 102 Rear 103 Element guide path (slider diameter) 110 Upper wing plate 110a Opposite side 111 First Escape Team 113 Partition section 113a Front of the partition 113b Rear of the partition 120 Lower wing plate 120a Opposing surface 121 Protrusion 130 Connecting column 131 Second Escape Team 132 Multilayered section 135 Support surface 140a Flange section 140b Flange section

Claims

1. A fastener stringer (3) having a long, rectangular first fastener tape (10) having a back surface (11) and a front surface (13), a first element row (50) provided on the back surface (11) of one end (10a) in the width direction of the first fastener tape (10), and a bent portion (10c) formed by bending the one end (10a) in the width direction of the first fastener tape toward the front surface (13), A fastener stringer (5) having a long, elongated second fastener tape (20) having a back surface (21) and a front surface (23), a second element row (60) provided on the back surface (21) of one end (20a) in the width direction of the second fastener tape (20), and a bent portion (20c) formed by bending the one end (20a) in the width direction of the second fastener tape toward the front surface (23), It has an upper wing plate (110), a lower wing plate (120), and a connecting column (130) that connects the upper wing plate (110) and the lower wing plate (120) at the front end, and a slider (40) that is slidably provided on the first and second element rows (50, 60) that extend 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, The slider (40) has a slider opening (103) that is divided by at least an upper wing plate (110), a lower wing plate (120), a connecting column (130), and flange portions (140a, 140b), The upper wing plate (110) has a partition portion (113) that protrudes toward the opposite surface of the lower wing plate (120), In the separated state of the first and second element rows (50, 60), the reaction force of the bent end portion (10c2) of the first fastener tape (10) pressing against the partition portion (113) causes at least a portion of the first element row (50) to be pressed against and clamped against the lower wing plate (120) or its flange portion (140b), thereby holding the slider (40) at any position in the longitudinal direction of the first element row (50). Slide fastener.

2. The bending portion (10c) has a greater pressing force on the partition portion (113) than the pressing force on the upper wing plate (110). The slide fastener according to claim 1.

3. The bent portion (10c) does not contact the upper wing plate (110), or if it does, it does not press against it, while the partition portion (113) presses against it. The slide fastener according to claim 1.

4. The widthwise end (10a) of the first fastener tape (10) extends toward the second fastener tape (20) beyond the interlocking center (O) of the first and second element rows (50, 60), and the widthwise end (20a) of the second fastener tape (20) extends toward the first fastener tape (10) beyond the interlocking center (O), so that when the first and second element rows (50, 60) are interlocked, the bent portions (10c, 20c) formed on the widthwise end (10a) of the first fastener tape (10) and the widthwise end (20a) of the second fastener tape (20) come into close contact with each other. The slide fastener according to claim 1.

5. The first waterproof layer (70) provided on the surface (13) of the first fastener tape (10), The second waterproof layer (80) provided on the surface (23) of the second fastener tape (20), Equipped with, The slide fastener according to claim 4.

6. When the first and second element rows (50, 60) are interlocked, the film bends (70c, 80c) formed on one end (70a) in the width direction of the first watertight layer (70) and one end (80a) in the width direction of the second watertight layer (80) come into close contact with each other. The slide fastener according to claim 5.

7. The upper wing plate (110) has a first relief portion (111) which is provided between the connecting column (130) and the partition portion (113) and the left and right edges of the upper wing plate (110), and is formed by recessing the opposing surface (110a) that faces the lower wing plate (120). The first relief portion (111) is provided near the center in the left-right direction of the opposing surface (110a), The slide fastener according to claim 1.

8. The partition portion (113) extends from the rear end of the connecting column (130) to the rear end of the upper wing plate (110). The slide fastener according to claim 1.

Images