Slider for slide fastener and manufacturing method thereof

Abstract

A slider 10 for a slide fastener comprises a puller 19 including a string-like member 20, and is characterized in that a string attachment structure 21 is provided so as to prevent the string-like member 20 from appearing on the surface of a slider body 11 and thereby affecting design properties. Specifically, the slider body 11 comprises, on an upper blade plate 12, a puller attachment portion 14 composed of a pair of left and right first members 15L, 15R and a second member 16 that links the same. The string-like member 20 and the string attachment structure 21 of the puller 19 are arranged between the second member 16 and the upper blade plate 12. This configuration allows the string-like member 20 of the puller 19 to be attached to the slider body 11 without being wound on the second member 16, whereby a slider having more excellent design properties can be obtained.

Description

[Technical Field]

[0001] The present invention relates to a slider for a slide fastener and a method for manufacturing the same. [Background technology]

[0002] Among conventional sliders for slide fasteners, a slider such as that disclosed in Patent Document 1 is known as a slider suitable for being used as a pull tab by winding a string-like member around it.

[0003] As shown in FIG. 1, the slider 100 for a slide fastener in Patent Document 1 includes an upper blade 101 and a lower blade 102, with a pull-tab attachment portion 103 formed on the upper blade 101. The pull-tab attachment portion 103 includes a pair of left and right first members 105R, 105L protruding from the upper surface of the upper blade 101 and a second member 106 connecting the pair of left and right first members 105R, 105L. A pull-tab insertion passage 108 is formed between the second member 106 and the upper surface 107 of the upper blade 101, and a string-like member can be passed through this pull-tab insertion passage 108 and wound around the second member 106. This allows the string-like member to be attached to the slider 100 to serve as a pull tab.

[0004] 2 is a diagram showing a state in which a string-like pull tab 110 is attached to the slider 100 and the slider 100 is attached to a slide fastener 200. The pull tab 110 comprises a string-like member 111 and a grip portion 112 provided at one end of the string-like member 111. By manually grasping and pulling the grip portion 112, the slider 100 can be moved along the fastener element row 201 of the slide fastener 200. The slider 100 for a slide fastener of Patent Document 1 is excellent in design and is also highly convenient in that garment suppliers and end users can freely attach pull tabs of their choice. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2015 / 194044 Summary of the Invention [Problem to be solved by the invention]

[0006] The slider 100 for a slide fastener in Patent Document 1 is particularly notable for its curved form and clean design when no pull tab is attached as shown in Fig. 1, but when a string-like pull tab 110 is attached as shown in Fig. 2, these advantages are not fully utilized. That is, when the string-like pull tab 110 is attached as shown in Fig. 2, the string-like member 111 is exposed above the pull tab attachment portion 103 of the slider 100, making the knot of the string-like member 111 conspicuous. Furthermore, because the string-like member 111 is wrapped around the pull tab attachment portion 103 so as to ride up onto it, when the slider 100 is viewed from the side, the thickness of the string-like member 111 appears to be stacked on the thickness of the pull tab attachment portion 103, giving the consumer the impression that the slider as a whole is thick.

[0007] The present invention was made in consideration of the above circumstances, and its object is to provide a slider for a slide fastener that improves the convenience of attaching a string pull tab to the slider without affecting the design that occurs when the string portion is exposed on the surface, as is the case with conventional sliders with string pull tabs. [Means for solving the problem]

[0008] The present invention achieves the above object by the following means. (1) The slider for a slide fastener in the present invention is a slider for a slide fastener comprising a slider body connected to an upper wing and a lower wing, a pull tab, and a string attachment structure, wherein the slider body has a pull tab attachment portion formed on the upper wing, and the pull tab attachment portion has a pair of left and right first members protruding from the upper surface of the upper wing and a second member connecting the pair of left and right first members, a pull tab insertion passage is provided between the second member and the upper wing, the pull tab has a string-like member in at least a part thereof, and the string-like member of the pull tab and the string attachment structure are arranged in the pull tab insertion passage.

[0009] (2) The slider for a slide fastener in the present invention is also characterized in that the string-like member of the pull tab has a string folded portion, the string folded portion is located below the upper surface of the second member, and a pair of string-like members extending from the string folded portion are attached to the slider body so as to pass through the pull tab insertion passage.

[0010] Furthermore, the string attachment structure has the following features. (3) The string attachment structure has a right groove and a left groove, and the pair of string-like members extending from the string folding portion are passed between the pair of left and right grooves and the pair of left and right first members. (4) The string attachment structure has a right internal passage partitioned by a flat right wall and a central partition wall, and a left internal passage partitioned by a left wall and a central partition wall, and is characterized in that a string-like member is passed through the left and right internal passages.

[0011] (5) The slider for a slide fastener in the present invention is also characterized in that the string attachment structure has a front raised portion and a rear raised portion on the upper surface, and the second member is arranged between the front raised portion and the rear raised portion.

[0012] (6) In addition, the slider for a slide fastener in the present invention may be characterized in that the front and rear side edges of the second member of the pull tab attachment portion of the slider body are curved, and the edges of the front and rear raised portions of the string attachment structure are curved to match the curved shape of the second member.

[0013] (7) In addition, the string attachment structure of the slider for a slide fastener in the present invention may be characterized in that it has a cover member on the upper surface, and the second member of the pull tab attachment portion is housed between the cover member and the central body portion of the string attachment structure.

[0014] (8) The string attachment structure of the slider for a slide fastener according to the present invention may also be characterized in that its front surface is an inclined surface.

[0015] (9) The string attachment structure of the slider for a slide fastener according to the present invention may also be characterized in that a rear recess is provided on the rear surface thereof, penetrating in the left-right direction.

[0016] (10) In addition, the string attachment structure of the slider for a slide fastener in the present invention may be characterized in that it has an offset recess, and the string folded portion of the string-like member is arranged in the string storage space formed by the offset recess.

[0017] (11) The string attachment structure of the slider for a slide fastener according to the present invention may be characterized in that it is integrally formed with the slider body.

[0018] Furthermore, the slider for a slide fastener according to the present invention can be manufactured by the following method. (12) A method for manufacturing a slider for a slide fastener, comprising the steps of: passing a string-like member of a pull tab through a pull tab insertion passage surrounded by an upper wing plate of a slider body, a pair of left and right first members protruding from the upper surface of the upper wing plate, and a second member connecting the pair of left and right first members; arranging a string attachment structure between the pair of string-like members extending from the string-fold portions; and moving the string attachment structure and the string-like members toward the pull tab insertion passage, pushing the string attachment structure into the pull tab insertion passage against the frictional force generated between the string attachment structure and the inner surface of the pull tab insertion passage, thereby fixing the string attachment structure and the string-like members to the slider body.

[0019] (13) Furthermore, the process of fixing the string attachment structure and the string-like member to the slider body may be characterized in that the rear protrusion provided on the string attachment structure comes out of the pull-tab insertion passage, thereby fixing the second member so as to sandwich it between the front protrusion provided on the string attachment structure and the rear protrusion. [Effects of the Invention]

[0020] According to the slider for a slide fastener of the present invention, the convenience of attaching a string pull tab to the slider is improved without affecting the design aspect due to the string portion being exposed on the surface, as has been the case with conventional sliders with string pull tabs. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view of a conventional slider for a slide fastener. [Figure 2] 2 is a diagram illustrating a slide fastener in which the slider shown in FIG. 1 is used. [Figure 3] FIG. 1 is a top view of a slider according to a first embodiment of the present invention. [Figure 4] 1 is a perspective view of a string attachment structure used in a slider according to a first embodiment of the present invention. FIG. [Figure 5] FIG. 5 is a top view of the string attachment structure shown in FIG. [Figure 6]FIG. 5 is a right side view of the string attachment structure shown in FIG. [Figure 7] 5 is a front view of the string attachment structure shown in FIG. 4, as viewed from the front side. [Figure 8] 10 is a view showing the state after the string-like member has been passed through the pull-tab insertion passage of the slider body. FIG. [Figure 9] 10A and 10B are diagrams showing the state in which the string attachment structure is arranged between string-shaped members. [Figure 10] This is a view of the slider from the rear to the front, showing the state in which only the string attachment structure is attached to the slider body without passing a string-like member through it. [Figure 11] 10A and 10B are a right side view and a rear view of a string attachment structure used in a slider according to a second embodiment of the present invention. [Figure 12] 10A and 10B are a right side view and a rear view of a string attachment structure used in a slider according to a third embodiment of the present invention. [Figure 13] 10A and 10B are a perspective view and a rear view of a string attachment structure used in a slider according to a fourth embodiment of the present invention. [Figure 14] FIG. 10 is a top view of a slider according to a fourth embodiment of the present invention. [Figure 15] 10A and 10B are a right side view and a rear view of a string attachment structure used in a slider according to a fifth embodiment of the present invention. [Figure 16] 10A and 10B are a right side view and a rear view of a string attachment structure used in a slider according to a sixth embodiment of the present invention. [Figure 17] FIG. 13 is a top view showing a state in which a string attachment structure is attached to a slider body of a slider according to a seventh embodiment of the present invention. [Figure 18] 13 is a diagram showing a state in which a string attachment structure and a string-like member are arranged on a slider according to an eighth embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] Each embodiment of the slider for a slide fastener according to the present invention will be described in detail with reference to the drawings. In the following description, with respect to the slider, the upper side refers to the near side relative to the plane of the paper in Fig. 3, the lower side refers to the far side relative to the plane of the paper in Fig. 3, the front side refers to the upper side relative to the plane of the paper in Fig. 3, the rear side refers to the lower side relative to the plane of the paper in Fig. 3, the right side refers to the right side relative to the plane of the paper in Fig. 3, and the left side refers to the left side relative to the plane of the paper in Fig. 3. The left-right direction is also referred to as the width direction. More specifically, the side of the slider where the fastener elements separate and emerge is referred to as the front side, and the side where the fastener elements interlock and emerge is referred to as the rear side. The sliding direction of the slider is referred to as the front-rear direction (length direction), the direction perpendicular to the front-rear direction and parallel to the fastener tape is referred to as the left-right direction (width direction), and the direction perpendicular to the front-rear direction and the left-right direction is referred to as the up-down direction.

[0023] (First embodiment) FIG. 3 is a top view of a slider 10 for a slide fastener (hereinafter, simply referred to as "slider 10") according to a first embodiment of the present invention. The slider 10 according to the first embodiment of the present invention is composed of at least three components: a slider body 11, which is formed by connecting an upper wing 12 and a lower wing 13, a pull tab 19, and a string attachment structure 21. The slider body 11 has essentially the same structure as the conventional slider for a slide fastener shown in FIG. 1, and includes plate-shaped upper and lower wing plates 12 and 13, and a pull tab attachment portion 14 formed on the upper wing plate 12. The lower surface of the upper wing plate 12 and the upper surface of the lower wing plate 13 are connected by a connecting rod. The upper wing plate 12 and the lower wing plate 13 each have an elongated shape in the sliding direction of the slider. Hereinafter, the sliding direction of the slider is defined as the length direction of the slider, and the direction perpendicular to the length direction and parallel to the fastener tape is defined as the width direction of the slider. A pull-tab attachment portion 14 is formed on the upper surface 17 of the upper blade 12, which is the surface opposite the lower blade 13. The pull-tab attachment portion 14 has a pair of left and right first members 15R, 15L protruding from the upper surface 17 of the upper blade 12, and a second member 16 connecting the pair of left and right first members 15R, 15L. The pair of left and right first members 15R, 15L are spaced apart in the width direction of the slider. The second member 16 extends in the width direction of the slider. A pull-tab insertion passage 18 extending in the front-to-rear direction is provided between the lower surface of the second member 16 and the upper surface 17 of the upper blade 12. This slider body 11 can be manufactured, for example, by injection molding of a resin material or die-casting of a metal material such as a zinc alloy or aluminum alloy.

[0024] The pull tab 19, which is the second component of the slider 10, comprises at least a string-like member 20 in a portion thereof. This string-like member 20 has a string folded portion 20A in its middle portion and a pair of string extension portions 20B, 20B continuing from the string folded portion 20A. The ends of the string extension portions 20B, 20B (the ends not shown in FIG. 3) may be provided with grip portions 112 as in the pull tab of the conventional slider shown in FIG. 2, or may simply be knotted strings. The string-like member 20 may be, for example, a twisted string made by twisting together multiple strands of fiber material, a strip-shaped member made by weaving a fiber material into a tape-like shape, a resin extrusion molded product, a resin injection molded product, or the like, but is not limited to these.

[0025] The cord attachment structure 21, which is the third component of the slider 10, is disposed in the pull-tab insertion passage 18. The cord attachment structure 21 has a substantially rectangular parallelepiped shape and includes a front protrusion 22 provided at one end in the longitudinal direction and a rear protrusion 23 provided at the other end in the longitudinal direction, with the cord attachment structure 21 disposed so as to sandwich the second member 16 of the slider body 11 between the front protrusion 22 and the rear protrusion 23. A cord folded-back portion 20A of the cord-like member 20 is disposed on the front side of the front protrusion 22 of the cord attachment structure 21, and a pair of cord extension portions 20B, 20B continuing from the cord folded-back portion 20A are disposed so as to pass through the gaps between the left and right side surfaces of the cord attachment structure 21 and the left and right first members 15R, 15L of the slider body 11, respectively, thereby preventing the string-like member 20 from slipping out rearward from the slider body 11. The string attachment structure 21 can be manufactured, for example, by injection molding a resin material, which is a soft member, or by die-casting a metal material such as a zinc alloy or an aluminum alloy.

[0026] Next, the specific structure of the cord attachment structure 21 will be described with reference to FIGS. 4 to 7. FIG. 4 is a perspective view of the cord attachment structure 21, FIG. 5 is a top view of the cord attachment structure 21, FIG. 6 is a right side view of the cord attachment structure 21, and FIG. 7 is a front view of the cord attachment structure 21 as seen from the front side. As shown in FIGS. 4 to 7, the cord attachment structure 21 has a generally rectangular parallelepiped shape and has an upper surface, a lower surface opposite the upper surface, a front surface, a rear surface opposite the front surface, a right side surface, and a left side surface opposite the right side surface. On the upper surface, the cord attachment structure 21 has a front protrusion 22 provided at one end in the longitudinal direction, a central body portion 24 connected to the front protrusion 22, and a rear protrusion 23 provided at the other end in the longitudinal direction connected to the central body portion 24. The central body portion 24 is generally flat. The front protrusion 22 and the rear protrusion 23 are thicker in the vertical direction than the central body portion 24. The area between the central body portion 24 and the front raised portion 22 forms a curved surface that gradually slopes upward toward the front, and this inclined surface serves as a front locking surface 29, which is the portion that locks onto the second member 16 of the slider body 11. Meanwhile, a rear raised portion 23 is provided on the rear side of the central body portion 24, and the area between the central body portion 24 and the rear raised portion 23 forms a curved surface that gradually slopes upward toward the rear, and this inclined surface serves as a rear locking surface 30, which is the portion that locks onto the second member 16 of the slider body 11. The front locking surface 29 and the rear locking surface 30 are each composed of a downwardly convex curved surface that smoothly connects with the flat surface of the central body portion 24, and an upwardly convex curved surface that smoothly connects with the downwardly convex curved surface.

[0027] As shown in Figure 6, the front surface 27 of the cord attachment structure 21 is a slope that gradually slopes downward toward the front. On the other hand, the rear surface 28 of the cord attachment structure 21 is a flat surface that is nearly vertical in the up-down direction. The underside of the cord attachment structure 21 is nearly flat (more precisely, it has a slight slope in the left-right direction as shown in Figure 7 to provide a slope for punching during manufacturing).

[0028] A right groove 32R is provided on the right side surface 25R of the cord attachment structure 21, extending from front to rear and recessed toward the inside of the cord attachment structure 21. An upper right edge 33R is provided above the right groove 32R, extending from front to rear, and a lower right edge 34R is provided below the right groove 32R, extending from front to rear. The right groove 32R is recessed in a roughly semicircular arc shape with a curvature, and the entire groove has a curved surface. Similarly, a left groove 32L is provided on the left side surface 25L of the cord attachment structure 21, extending from front to rear and recessed toward the inside of the cord attachment structure 21. An upper left edge 33L and a lower left edge 34L are provided above and below the left groove 32L, respectively, extending from front to rear. The left groove 32L is recessed in a roughly semicircular arc shape with a curvature, and the entire groove has a curved surface. (Note that "arc-shaped" does not mean that it is an exact arc, but rather that it is sufficient if it is a curved surface with a rounded shape.)

[0029] Next, the procedure for attaching the string-like member 20 of the pull tab 19 to the slider body 11 using the string attachment structure 21 will be described with reference to FIGS. 8, 9 and 3. FIG.

[0030] 8 is a diagram showing the state after the string-like member 20 has been placed in the pull-tab insertion passage 18 of the slider body 11. The folded-back string portion 20A of the string-like member 20 is passed through the pull-tab insertion passage 18 from the rear side to the front side.

[0031] Next, as shown in Figure 9, the string attachment structure 21 is placed between the pair of string-like members 20 (string extension portions 20B, 20B) extending from the string folded-back portion 20A. The string attachment structure 21 is positioned on the upper surface 17 of the upper wing plate 12 of the slider body 11, in close proximity to the string folded-back portion 20A of the string-like member 20. Then, while maintaining this positioned state, the string attachment structure 21 and the string-like member 20 are moved rearward toward the pull-tab insertion passage 18. When the string attachment structure 21 abuts against the pull-tab attachment portion 14 and no rearward force is applied, the vertical height of the rearward protrusion 23 of the string attachment structure 21 is greater than the vertical height of the pull-tab insertion passage 18. Furthermore, when a rearward force is applied, the rearward protrusion 23 is reversibly deformed and pushed into the pull-tab insertion passage 18. In other words, when the rear protuberance 23 is inside the pull-tab insertion passage 18, the upper surface of the rear protuberance 23 is pressed firmly against the lower surface of the second member 16 of the slider body 11, causing the rear protuberance 23 to be elastically deformed (note that the second member 16 may also be elastically deformed). In this state, the cord attachment structure 21 is pushed into the pull-tab insertion passage 18 against the frictional force generated between the cord attachment structure 21 and the inner surface of the pull-tab insertion passage 18, and when the rear protuberance 23 is positioned behind the pull-tab insertion passage 18, the state shown in Figure 3 is reached. In the state shown in Figure 3, the front protuberance 22 and rear protuberance 23 of the cord attachment structure 21 sandwich the second member 16 of the pull-tab attachment part 14, causing the cord attachment structure 21 to be fixed to the slider body 11. In this case, in order to prevent rattling of the attached state of the cord attachment structure 21, it is preferable that the front engagement surface 29 of the front protrusion 22 and the rear engagement surface 30 of the rear protrusion 23 are both configured to be in complete contact with the second member 16 of the pull tab attachment part 14. Furthermore, it is preferable that the upper surface of the central body part 24 of the cord attachment structure 21 be configured to be in complete contact with the lower surface of the second member 16.

[0032] The cord folded portion 20A of the pull tab 19 attached as described above is attached to the slider body 11 so as to be positioned at least below the upper surface (the highest point on the upper surface) of the second member 16 of the pull tab attachment portion 14, and the pair of string-like members 20 extending from the cord folded portion 20A are also attached to the slider body 11 so as to pass through the pull tab insertion passage 18 and extend toward the rear side of the slider 10. In other words, the string-like members 20 of the pull tab 19 are positioned below the upper surface of the second member 16. Therefore, compared to the prior art in which the string-like members 20 were always exposed on the upper surface side of the second member 16 of the pull tab attachment portion 14, this has less of an effect on the appearance of the slider 10 from above.

[0033] 6, the front protrusion 22 of the cord attachment structure 21 is formed to protrude upward more than the rear protrusion 23. Therefore, in the state shown in FIG. 3, even if a force acting toward the rear of the slider is applied to the cord attachment structure 21 by pulling the pull tab 19 toward the rear of the slider, the cord attachment structure 21 will not easily enter the pull tab insertion passage 18.

[0034] Furthermore, because the front surface 27 of the cord attachment structure 21 is a surface that gradually slopes downward toward the front as shown in Figure 6, when the pull tab is pulled strongly backward so that a force is applied to the cord attachment structure 21 toward the rear of the slider, the cord folded-back portion 20A is rubbed upward along the slope of the front surface 27 of the cord attachment structure 21, and the cord folded-back portion 20A comes to the same vertical position as the front protrusion 22. Therefore, the force that tries to pull the cord attachment structure 21 backward acts at the position indicated by arrow X in Figure 6. This force indicated by arrow X can be received directly by the pull tab attachment portion 16 of the slider body via the front protrusion 22, which makes it even more difficult to pull out. Conversely, if a force is applied to the position indicated by arrow Y in Figure 6, the force indicated by arrow Y will act as a moment that forces the cord attachment structure 21 into the pull-tab insertion passage 18, with the periphery of the front engagement surface 29 of the front protrusion 22 as a fulcrum (a clockwise moment with the periphery of the front engagement surface 29 as a fulcrum in Figure 6), thereby reducing the effect of preventing the cord attachment structure 21 from coming loose.

[0035] In terms of appearance, it is preferable that the front protrusion 22 and the rear protrusion 23 are as inconspicuous as possible when the string attachment structure 21 is attached to the slider body 11 as shown in Figure 3. Therefore, in the top view of Figure 3, it is preferable that the maximum length in the front-to-rear direction of the exposed portion of the front protrusion 22 or the rear protrusion 23 is shorter than the length in the front-to-rear direction at the center position in the left-to-right direction of the second member 16 of the pull-tab attachment part 14, and more specifically, it is preferable that the length in the front-to-rear direction of the exposed portion of the front protrusion 22 or the rear protrusion 23 is 60% or less of the length in the front-to-rear direction of the second member 16 of the pull-tab attachment part 14.

[0036] Next, the relative dimensions of the components when the cord attachment structure 21 is attached to the inside of the pull-tab insertion passage 18 of the slider body 11 will be described with reference to Figure 10. Figure 10 is a view of the slider body 11, viewed from the rear toward the front, with only the cord attachment structure 21 attached to it without the string-like member 20 passing through it. With the cord attachment structure 21 attached as shown in Figure 10, the pull-tab insertion passage 18 is divided into two left and right cord holes 18R and 18L by the cord attachment structure 21. The length indicated by r1 in Figure 10 is the distance between the lead-out line L1 extending vertically from the deepest part of the right recessed groove 32R of the cord attachment structure 21 and the lead-out line L2 extending vertically from the outermost part of the pull-tab insertion passage 18 in the lateral direction. For convenience, this is referred to as the cord hole reference length r1. Here, assuming that the thickness of the string-like member 20 threaded through the left and right string holes 18R, 18L in its natural state is r2, the string hole reference length r1 is designed to be an appropriate size in relation to the thickness r2 of the string-like member. Considering the general usage of a slide fastener, it is preferable that the pull tab 19 be fixed to the slider body 11 as much as possible without dangling or moving except when the slide fastener is being operated. Therefore, it is preferable to design the string hole reference length r1 to be smaller than the thickness r2 of the string-like member in its natural state. By designing the dimensions in this manner, when the string attachment structure 21 is attached to the slider body 11, the string-like member 20 of the pull tab 19 is compressed in the left and right string holes 18R, 18L, preventing the string-like member 20 from moving freely relative to the left and right string holes 18R, 18L. Preferably, the string hole reference length r1 is 50% to 80% of the thickness r2 of the string-like member in its natural state. This is advantageous in that when attaching the string attachment structure 21 to the slider body 11, the string attachment structure 21 can be pushed into the pull-tab insertion passage 18 with an appropriate force without compressing the string attachment structure 21 more than necessary.The pair of string extension portions 20B, 20B continuing from the string fold portion 20A are arranged to pass through the gap between the left and right side surfaces of the string attachment structure 21 and the first members 15R, 15L of the slider body 11, respectively. More specifically, the string attachment structure 21 has a right groove 32R and a left groove 32L, and the pair of string-like members 20 (more precisely, the pair of string extension portions 20B, 20B) extending from the string fold portion 20A are passed between the pair of left and right grooves (32R, 32L) and the pair of left and right first members (15L, 15R).

[0037] The length d1 shown in Figure 10 is the length (width) in the left-right direction of the rear protrusion 23 of the cord attachment structure 21, and for convenience, this d1 will be referred to as the rear protrusion width d1. If the rear protrusion width d1 is large, the exposed area of ​​the cord attachment structure 21 will be large, which will not look good, and the frictional force generated when the cord attachment structure 21 is passed through the pull-tab insertion passage 18 will be large. Conversely, if the rear protrusion width d1 is too small, the left and right cord insertion holes 18R, 18L will be too large, which will result in the cord-like member 20 not being restrained by the left and right cord insertion holes 18R, 18L. Therefore, it is preferable that the rear protrusion width d1 be approximately 40% to 70% of the maximum left-right width of the pull-tab insertion passage 18.

[0038] By doing as described above, according to the present invention, the string-like member 20 is not exposed by riding on top of the pull-tab attachment portion 14, but is arranged to pass under the pull-tab attachment portion 14, so the string-like member 20 does not visually obstruct the design of the original slider body 11 when viewed from above. In particular, when the slider 10 is viewed from the side, the thickness of the string-like member 20 is not stacked on the thickness of the pull-tab attachment portion 14, but is the same thickness as the original slider body 11, so the thinness and clean curved design of the original slider body 11 when viewed from the side are not impaired.

[0039] Furthermore, according to the present invention, even a user of a slide fastener or a sewing craftsman who sews a slide fastener onto clothing or the like can attach the string pull tab 19 to the slider body 11 through a simple work process without requiring any particularly complicated work.

[0040] In addition, conventional cord pullers required the cord to be wound around the slider body, making it difficult to automate using machinery, but the attachment operation of the cord puller of the present invention involves moving the cord back and forth, making it advantageous in terms of automation using machinery.

[0041] (Second embodiment) Next, a second embodiment of the present invention will be described. Figure 11 shows a string attachment structure 21B for a slider according to the second embodiment of the present invention, with Fig. 11A on the left being a side view of the string attachment structure 21B as seen from the right, and Fig. 11B on the right being a rear view of the string attachment structure 21B as seen from the rear.

[0042] In the second embodiment of the present invention, as shown in FIG. 11, the right side surface 25R and the left side surface 25L of the string attachment structure 21B do not have the recessed grooves 32R, 32L provided in the first embodiment, and the right side surface 25R and the left side surface 25L are flat. While the right side surface 25R and the left side surface 25L are shown as vertically perpendicular planes in FIG. 11, they may also be vertically inclined planes. Furthermore, in this second embodiment, the inclination of the front surface 27 of the string attachment structure 21B is reduced compared to the first embodiment, and the length of the front protrusion 22 in the front-to-rear direction is correspondingly longer. The front surface 27 of the string attachment structure 21B may not be an inclined plane, but may be a vertically perpendicular plane.

[0043] In the second embodiment, the strength of the string attachment structure 21B itself is increased, reducing the risk of damage due to deterioration over time or repeated removal and attachment. In addition, the second embodiment has advantages such as simplifying the mold used to manufacture the string attachment structure 21B and reducing the risk of improper filling of the material into the mold during manufacturing.

[0044] (Third embodiment) Next, a third embodiment of the present invention will be described. Fig. 12 shows a string attachment structure 21C for a slider according to the third embodiment of the present invention, with Fig. A on the left being a side view of the string attachment structure 21C as seen from the right, and Fig. B on the right being a rear view of the string attachment structure 21C as seen from the rear.

[0045] As shown in FIG. 12, the third embodiment of the present invention does not have the right and left lower edges 34R and 34L on the underside of a string attachment structure 21C that are provided in the first embodiment. Furthermore, the left and right grooves 32R and 32L are not approximately semicircular as in the first embodiment, but are approximately quarter-circular. Furthermore, the left and right grooves 32R and 32L of the string attachment structure 21C are offset from their front sides toward the rear, forming an offset recess 36 that is curved and cut out on the underside of the front surface of the string attachment structure 21C. In other words, the string attachment structure 21C has an offset recess 36 provided on the underside of at least the side opposite the front protrusion 22. This forms a string storage space 37 below the front surface of the string attachment structure 21C.

[0046] In this third embodiment, the string fold portion 20A of the pull tab 19 is stored in the string storage space 37 provided below the front surface of the string attachment structure 21C, so that the string fold portion 20A is not exposed at all on the surface (top surface) of the slider 10, or only a small portion of it is exposed, making the appearance of the slider 10 less likely to be affected by the string-shaped member 20.

[0047] (Fourth embodiment) Next, a fourth embodiment of the present invention will be described. Fig. 13 is a diagram showing a cord attachment structure 21D in a slider according to the fourth embodiment of the present invention, with Fig. A on the left being a perspective view of the back surface (lower surface) of cord attachment structure 21D, and Fig. B on the right being a rear view of cord attachment structure 21D as seen from behind. Fig. 14 is a diagram showing slider body 11D of slider 10 according to the fourth embodiment of the present invention. This fourth embodiment is suitable for slider body 11D in which second member 16 of pull tab attachment portion 14 is designed to have a relatively large width in the left-right direction, as shown in Fig. 14.

[0048] Unlike the previous embodiments, the string attachment structure 21D of the fourth embodiment of the present invention does not support the string-like member 20 in left and right recessed grooves 32R, 32L. Instead, as shown in FIG. 13, the string-like member 20 is designed to pass through left and right internal passages 39R, 39L provided inside the string attachment structure 21D. The right internal passage 39R is defined by a flat right wall 40R and a central partition wall 40C provided in the string attachment structure 21D, and the left internal passage 39L is defined by the left wall 40L and the central partition wall 40C. The front side of the central partition wall 40C is offset toward the rear, and the lower front side of the string attachment structure 21D forms an offset recess 36 cut at a substantially 90-degree angle. This forms a string storage space 37 below the front side of the string attachment structure 21D.

[0049] In this fourth embodiment, even in a slider designed so that the second member 16 of the pull tab attachment portion 14 has a relatively large width in the left-right direction, as shown in FIG. 14, the string-like member 20 can be aligned parallel to and near the center of the slider, so that the string-like member 20 extending through the left and right internal passages 39R, 39L also appears to hang parallel, improving the overall appearance of the slider. Furthermore, when attaching the string attachment structure 21D to the slider body 11, the left and right internal passages 39R, 39L reduce the rigidity of the entire string-like member 20, making it more flexible, and therefore only a small operating force is required to push the string attachment structure 21D into the pull tab insertion passage 18 of the slider body 11. The string folded-back portion 20A of the pull tab 19 is stored in the string storage space 37, just as in the third embodiment.

[0050] (Fifth embodiment) Next, a fifth embodiment of the present invention will be described. Fig. 15 shows a cord attachment structure 21E for a slider according to the fifth embodiment of the present invention, with Fig. A on the left being a side view of cord attachment structure 21C as seen from the right, and Fig. B on the right being a rear view of cord attachment structure 21C as seen from the rear. Contrary to the fourth embodiment described above, this fifth embodiment is suitable for sliders (not shown) in which the width in the left-right direction of second member 16 of pull tab attachment portion 14 is designed to be relatively small.

[0051] 15, in the fifth embodiment of the present invention, the width of the string attachment structure 21E in the left-right direction is smaller than that of the previously described embodiments. Specifically, the width of the string attachment structure 21E in the left-right direction is approximately 30% to 60% of the maximum height of the string attachment structure 21E in the up-down direction (i.e., the height of the front protrusion 22). Furthermore, a rear recess 42 that penetrates in the left-right direction is provided near the center of the rear surface 28 of the string attachment structure 21E.

[0052] In this fifth embodiment, the exposed portion of the cord attachment structure 21E is smaller, so the appearance of the slider as a whole is less affected by the cord attachment structure 21E. Furthermore, the provision of the rear recess 42 reduces the rigidity of the rear surface 28 of the cord attachment structure 21E, making it more flexible, so less force is required to push the cord attachment structure 21E into the pull-tab insertion passage 18 of the slider body 11. Note that this fifth embodiment is not necessarily applicable only to sliders designed with a relatively small width in the left-right direction of the second member 16 of the pull-tab attachment portion 14. For example, it can also be applied to sliders such as the one shown in FIG. 3 when it is desired to position the string-like member 20 with a sufficient gap between the slider body 11 and the cord attachment structure 21.

[0053] (Sixth embodiment) Next, a sixth embodiment of the present invention will be described. Fig. 16 shows a string attachment structure 21F for a slider according to the sixth embodiment of the present invention, with Fig. A on the left being a side view of the string attachment structure 21F as seen from the right, and Fig. B on the right being a rear view of the string attachment structure 21F as seen from the rear.

[0054] 16, while the cord attachment structures of the previous embodiments have a front protuberance 22 and a rear protuberance 23 on the top surface as portions for attachment to the slider body 11, the sixth embodiment of the present invention does not have the front protuberance 22 or the rear protuberance 23, and instead the cord attachment structure has a cover member 44 on the top surface. A storage space 47 capable of storing the second member 16 of the pull tab attachment part 14 is provided between this cover member 44 and the central body part 24. The cover member 44 is supported in a cantilevered manner by a support pillar 45 extending upward from the front face 27 side of the cord attachment structure 21F, and a protrusion 46 extending downward is provided at the tip of the support pillar 45. The procedure for attaching the cord attachment structure 21F of the sixth embodiment configured in this manner to the slider body 11 will be explained below. First, the front of the second member 16 of the pull tab attachment part 14 is inserted through the gap between the protrusion 46 and the rear surface 28. When the second member 16 is completely inserted into the accommodation space 47, the protrusion 46 engages with the rear side of the second member 16. This prevents the second member 16 from easily slipping out of the accommodation space 47, and the cord attachment structure 21F is securely attached to the slider body 11.

[0055] In the sixth embodiment, the cover member 44 is supported in a cantilevered manner, which makes it flexible and easy to attach to the slider body 11. Although the cover member 44 covers and exposes the pull tab attachment portion 14, this has the advantage that a design or logo mark can be printed on the top surface 48 of the cover member 44.

[0056] Seventh embodiment Next, a seventh embodiment of the present invention will be described. Figure 17 is a diagram showing a slider body 11G according to the seventh embodiment of the present invention and a state in which a cord attachment structure 21G is attached to the slider body 11G. For convenience, the figure shows a state in which only the cord attachment structure 21G is attached, without the cord pull tab 19.

[0057] 17, in the seventh embodiment of the present invention, the front side edge 16F and the rear side edge 16B of the second member 16 of the pull tab attachment portion 14 of the slider body 11G are curved. To match the curved shape of the second member 16, the front protrusion 22, the front locking surface 29, the rear protrusion 23, and the rear locking surface 30 of the string attachment structure 21G are also configured to have curved edges.

[0058] In the seventh embodiment, the curved surface on the cord attachment structure 21G side is naturally adjusted to the center in the left-right direction according to the shape of the curved surface on the second member 16 side, so that the cord attachment structure 21G is firmly fixed to the slider body 11G. Also, in terms of external design, the matching of the curved surface shapes creates a beautiful appearance.

[0059] (Eighth embodiment) Next, an eighth embodiment of the present invention will be described. Fig. 18 is a diagram showing how a string attachment structure 21 and a string-like member 20 are attached to a slider 10 according to the eighth embodiment of the present invention. This eighth embodiment differs from the first embodiment in that the string attachment structure 21 and the string-like member 20 are attached from the rear side of the slider 10 toward the front side. The attachment method is the same as that described in Figs. 8 and 9 above, except that the string attachment structure 21 and the string-like member 20 are positioned on the rear side of the upper surface 17 of the upper wing plate 12 of the slider body 11, rather than the front side, and are moved forward toward the pull-tab insertion passage 18. This eighth embodiment is suitable for cases where the operation direction of the slider 10 is horizontal rather than vertical, such as when a slide fastener is attached horizontally to the opening and closing portion of a breast pocket of clothing, rather than when the operation direction of the slider 10 is vertical (the direction in which gravity acts), as in the case of using a slide fastener on a placket of clothing. Another example of use of the eighth embodiment is when a pair of sliders 10 are used with their front ends facing each other, such as at the opening of a bag or backpack. In this case, it may be preferable from the standpoint of operability of the slider 10 to attach the operating portion of the pull tab 19 in a state where it extends forward of the slider, as in this eighth embodiment.

[0060] (Ninth embodiment) In the above-described embodiments, the string attachment structures 21, 21B, 21C, 21D, 21E, 21F, and 21G are configured to be separate from the slider body 11 and attached to the slider body 11, but the string attachment structure 21 may not be separate from the slider body 11 and may be configured to be integral with the slider body 11 from the beginning. For example, when the slider body 11 is manufactured by resin injection molding, a structure equivalent to the string attachment structure 21 may be integrally injected with resin into the space between the second member 16 and the upper wing plate 12 of the slider body 11.

[0061] With this ninth embodiment, a user of the slide fastener or a sewing company that sews the slide fastener onto clothing or the like can simply insert the string-like member 21 into the slider body 11 and connect both ends of the string-like member 21 to form the pull tab 19. Another advantage is that the number of parts of the slider 10 is reduced by one.

[0062] As explained above, the sliders of each embodiment of the present invention can reduce the design impact that is associated with the exposed string portion on the surface, which is a problem with conventional sliders with string pull tabs that wrap around the string, improve the convenience of attaching the string pull tab to the slider, and provide a variety of other effects as explained in the above specification.

[0063] The present invention is not limited to the embodiments disclosed above, and it is possible to appropriately use, use as an alternative technology, or add to the present invention, technologies that are substantially the same as or that are recognized by those skilled in the art as technologies that have similar effects to the technical matters described in the embodiments of the present invention.Furthermore, it is also possible to implement the present invention by rearranging the characteristic configurations of the above embodiments.

[0064] Furthermore, throughout this specification, the parts numbered and described in the drawings are described as the minimum components required in each embodiment of the present invention, and do not mean that the present invention is composed only of the parts numbered and described in the drawings. [Explanation of symbols]

[0065] 10 Slider for slide fastener 11 Slider body 12 Upper wing plate 13 Lower wing plate 14 Pull attachment part 15R, 15L First member 16 Second member 17 Upper surface of upper wing 18 Handle insertion passage 18R, 18L lace holes 19 Pull handle 20 String-like member 20A String fold 20B String extension part 21, 21B, 21C, 21D, 21E, 21F, 21G String attachment structure 22 Anterior ridge 23 Posterior ridge 24 Central fuselage 25R right side 25L left side 27 Front 28 Rear 29 Front locking surface 30 Rear locking surface 32R right groove 32L left groove 33R Upper right edge 33L Upper left edge 34R Lower right edge 34L lower left edge 36 Offset recess 37 String storage space 39R Right internal passage 39L Left internal passage 40C Central separation wall 40R right wall 40L left wall 42 Rear recess 44 Cover member 45 Support column part 46 Protrusion 47 Storage space 48 Cover member top surface

Claims

1. A slider (10) for a slide fastener, comprising a slider body (11) in which an upper blade (12) and a lower blade (13) are connected, a pull tab (19), and a string attachment structure (21, 21B, 21C, 21D, 21E, 21F, 21G), The slider body (11) has a pull-tab attachment portion (14) formed on the upper blade (12), and the pull-tab attachment portion (14) has a pair of left and right first members (15L, 15R) protruding from the upper surface of the upper blade (12) and a second member (16) connecting the pair of left and right first members (15L, 15R), and a pull-tab insertion passage (18) is provided between the second member (16) and the upper blade (12), The pull tab (19) has a string-like member (20) at least in part, The slider (10) for a slide fastener is characterized in that the string-like member (20) of the pull tab (19) and the string attachment structure (21, 21B, 21C, 21D, 21E, 21F, 21G) are arranged in the pull tab insertion passage (18).

2. The slider (10) for a slide fastener according to claim 1, characterized in that the string-like member (20) of the pull tab (19) has a string folded portion (20A), the string folded portion (20A) is located below the upper surface of the second member (16), and a pair of string-like members (20) extending from the string folded portion (20A) are attached to the slider body (11) so as to pass through the pull tab insertion passage (18).

3. The slider (10) for a slide fastener according to claim 2, characterized in that the string attachment structure (21, 21C, 21F, 21G) has a right groove (32R) and a left groove (32L), and the pair of string-like members (20) extending from the string fold-back portion (20A) are passed between the pair of left and right grooves (32R, 32L) and the pair of left and right first members (15L, 15R).

4. The string attachment structure (21D) has a right internal passage (39R) partitioned by a flat right wall (40R) and a central separation wall (40C), and a left internal passage (39L) partitioned by a left wall (40L) and a central separation wall (40C), and a string-like member (20) is passed through the left and right internal passages (39R, 39L) of the slider (10) for a slide fastener as described in claim 1 or 2.

5. A slider (10) for a slide fastener according to any one of claims 1 to 3, characterized in that the string attachment structure (21, 21B, 21C, 21D, 21E, 21F, 21G) has a front raised portion (22) and a rear raised portion (23) on its upper surface, and the second member (16) is disposed between the front raised portion (22) and the rear raised portion (23).

6. The slider (10) for a slide fastener according to claim 5, characterized in that the front side edge (16F) and rear side edge (16B) of the second member (16) of the pull tab attachment portion (14) of the slider body (11G) are curved, and the edges of the front raised portion (22) and rear raised portion (23) of the string attachment structure (21F) are curved to match the curved shape of the second member (16).

7. The slider (10) for a slide fastener according to any one of claims 1 to 3, characterized in that the string attachment structure (21F) has a cover member (44) on its upper surface, and the second member (16) of the pull tab attachment portion (14) is housed between the cover member (44) and the central body portion (24) of the string attachment structure (21F).

8. The slider (10) for a slide fastener according to any one of claims 1 to 3, characterized in that the string attachment structure (21, 21B, 21C, 21D, 21E) has a front surface (27) that is an inclined surface.

9. The slider (10) for a slide fastener according to any one of claims 1 to 3, characterized in that the string attachment structure (21E) has a rear recess (42) penetrating in the left-right direction on the rear surface (28).

10. A slider (10) for a slide fastener according to any one of claims 1 to 3, characterized in that the string attachment structure (21C, 21D) has an offset recess (36), and the string folded portion (20A) of the string-shaped member (20) is arranged in a string storage space (37) formed by the offset recess (36).

11. A slider (10) for a slide fastener according to any one of claims 1 to 3, characterized in that the string attachment structure (21, 21B, 21C, 21D, 21E, 21F, 21G) is integrally formed with the slider body (11).

12. a step of arranging a string folded portion (20A) of a string-like member (20) of a pull tab (19) in a pull tab insertion passage (18) surrounded by an upper blade (12) of a slider body (11), a pair of left and right first members (15L, 15R) protruding from the upper surface of the upper blade (12), and a second member (16) connecting the pair of left and right first members (15L, 15R); a step of disposing a string attachment structure (21) between a pair of string-like members (20) extending from the string folded-back portion (20A); a step of moving the cord attachment structure (21) and the cord-like member (20) toward the pull-tab insertion passage (18) and pushing the cord attachment structure (21) into the pull-tab insertion passage (18) against the frictional force generated between the cord attachment structure (21) and the inner surface of the pull-tab insertion passage (18), thereby fixing the cord attachment structure (21) and the cord-like member (20) to the slider body (11); A method for manufacturing a slider (10) for a slide fastener, comprising:

13. The step of fixing the string attachment structure (21) and the string-like member (20) to the slider body (11) is carried out by removing the rear protrusion (23) provided on the string attachment structure (21) from the pull-tab insertion passage (18), thereby fixing the front protrusion (22) provided on the string attachment structure (21) to the 13. The method for manufacturing a slider (10) for a slide fastener according to claim 12, wherein the second member (16) is fixed so as to be sandwiched between the rear protrusion (23).

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