Zipper and method for producing a separable bottom stop box for a zipper

Abstract

In the present invention: among the inner surfaces (25a, 25b, 25c, 25d) forming an insertion pin hole (25) of a box (21), a front side surface (25a) and / or a rear side surface (25b) facing a front surface (11b) / rear side surface (11c) of an insertion pin (11) has a projection (26, 27) adapted to engage in a recess (16, 17); the projection (26, 27) has an asymmetric shape about a plane (P) passing through the center of the projection (26, 27) in an opening / closing direction of the insertion pin (11) and being orthogonal to the opening / closing direction;and the projection (26, 27) has an upper inclined surface (26a, 27a) formed to increase the thickness of the projection (26, 27) downward from an upper part of the projection (26, 27) in the opening / closing direction of the insertion pin (11), and a lower inclined surface (26b, 27b) formed to increase the thickness of the projection (26, 27) upward from a lower part of the projection (26, 27) in the opening / closing direction of the insertion pin (11), wherein the upper inclined surface (26a, 27a) has a greater inclination than the inclination of the lower inclined surface (26b, 27b);

Description

TECHNICAL FIELD

[0001] The present invention relates to a zipper and a method for producing a zipper separator insert holder. STATE OF THE ART

[0002] A zipper separator insert is generally provided at the lower end portions of the left and right zipper tapes and includes left and right separable pins and another left and right retainer. In the zipper tape, a row of elements is attached to an inner edge portion of a zipper tape. In an open state of the left and right fasteners, in which a slider between the left and right fasteners is lowered to the lowest position where the slider abuts the separator insert, the separable pin is removed from the retainer, and the separable pin is pulled upward by an element guide path of the slider, whereby the left and right fasteners can be separated.Furthermore, from this separated state, the separable pin of one zipper tape is guided through the element guide path of the slider at the lowest position into contact with the holder of another zipper tape, and then inserted into the holder, thereby aligning the lower end portions of the left and right zipper tapes. By moving the slider upward from this alignment, a gap between the fastener elements of the left and right fasteners can be closed.

[0003] If the slider is moved upward in a state where the separable pin is not fully inserted into the holder, that is, in a state where the lower end portions of the left and right zipper tapes are not aligned, an unfavorable combination of the left and right zipper tapes may occur. To prevent such an occurrence, it is desirable for a user to be able to recognize that the lower end portions of the pair of left and right fastening tapes are in an alignment state.

[0004] For example, Patent Literature 1 discloses a slide fastener separator insert in which a separable pin is freely fitted into a retaining box so as to be substantially parallel to the retaining pin. In the slide fastener separator insert, a recess is provided in a tip end portion on either one or both of the front and rear surfaces of the separable pin, and a convex member that enters the recess is provided on an inner surface of an engaging hole of the retaining box into which the separable pin is fitted.Therefore, since the recess of the separable pin is engaged with and held by a convex portion of the holding box in a state where the separable pin is fully inserted into the holder, and the feeling of resistance is generated when the separable pin is removed from the holding box, the user can recognize that the lower end portions of the pair of left and right fasteners are in the alignment state when trying to remove the separable pin from the holding box. CITATION LISTPATENT LITERATURE

[0005] Patent Document 1: JPH07-3925Y SUMMARY OF THE INVENTION TECHNICAL PROBLEM

[0006] A main objective of the slide fastener disclosed in Patent Literature 1 is to enable the separable pin to be easily inserted into the retaining box even with one-handed operation. By forming an inclined engaging surface in the separable pin and a tapered surface in the convex member, the separable pin can be inserted into an engaging hole with low friction and little resistance to collide with the convex member when the separable pin is inserted into the engaging hole. Therefore, it may be difficult for the user to recognize the insertion feeling when the separable pin is inserted into the retaining box because the resistance feeling and noise are hardly generated.

[0007] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a slide fastener and a method for manufacturing a holder of a slide fastener separator in which a user can conveniently recognize that a separable pin is inserted into a holder. SOLUTION TO THE PROBLEM

[0008] In order to solve the above problems, the present invention is achieved by the following configurations. [1] A zipper (100) comprises a pair of first and second zipper tapes (30A, 30B) at least one slider (40) arranged to open and close a space between the first and second zipper tapes (30A, 30B); and a separating insert (1) provided on a lower end portion of the first and second zipper tapes (30A, 30B) in a longitudinal direction, wherein the separating insert (1) comprises: a first separating insert portion (10) provided on the first zipper tape (30A), and a second separating insert portion (20) provided on the second zipper tape (30B) and adapted to be coupled to and uncoupled from the first separating insert portion (10), the first separating insert portion (10) comprises a separable pin (11) provided on a widthwise inner edge side of the first zipper tape (30A), the second separating insert section (2) comprises a holder (21) provided on a widthwise inner edge side of the second zipper tape (30B), the holder (21) comprises a hole of the separable pin (25) which opens towards a top side and into or from which the separable pin (11) can be inserted or removed in the longitudinal direction, at least one of a front surface (11b) and a rear surface (11c) of the separable pin (11) is provided with a recess (16, 17), among the inner surfaces (25a, 25b, 25c, 25d) forming the hole of the separable pin (25) of the holder (21), at least one of a front side surface (25a) and a rear side surface (25b) facing the front surface (11b) and the rear surface (11c) of the separable pin (11) is provided with a convex portion (26, 27) engageable with the recess (16, 17), the convex portion (26, 27) comprises an asymmetrical shape with respect to a plane (P) passing through a central portion of the convex portion (26, 27) in an insertion or removal direction of the separable pin (11) and perpendicular to the insertion or removal direction, the convex portion (26, 27) comprises an upper inclined surface (26a, 27a) which increases a thickness of the convex portion (26, 27) downward from an upper end portion of the convex portion (26, 27) in the insertion or removal direction of the separable pin (11), and a lower inclined surface (26b, 27b) which increases the thickness of the convex portion (26, 27) upward from a lower end portion of the convex portion (26, 27) in the insertion or removal direction of the separable pin (11), and an inclination of the upper inclined surface (26a, 27a) is greater than an inclination of the lower inclined surface (26b, 27b). [2] A zipper (100) comprising a pair of first and second zipper tapes (30A, 30B) at least one slider (40) arranged to open and close a space between the first and second zipper tapes (30A, 30B); and a separating insert (1) provided on a lower end portion of the first and second zipper tapes (30A, 30B) in a longitudinal direction, wherein the separating insert (1) comprises the following; a first separating insert portion (10) provided on the first zipper tape (30A), and a second separating insert portion (20) provided on the second zipper tape (30B) and adapted to be coupled to and uncoupled from the first separating insert portion (10), the first separating insert portion (10) comprises a separable pin (11) provided on a widthwise inner edge side of the first zipper tape (30A), the second separating insert section (2) comprises a holder (21) provided on a widthwise inner edge side of the second zipper tape (30B), the holder (21) comprises a hole of the separable pin (25) which opens towards a top side and into or from which the separable pin (11) can be inserted or removed in the longitudinal direction, at least one of a front surface (11b) and a rear surface (11c) of the separable pin (11) is provided with a recess (16, 17), among the inner surfaces (25a, 25b, 25c, 25d) forming the hole of the separable pin (25) of the holder (21), at least one of a front side surface (25a) and a rear side surface (25b) facing the front surface (11b) and the rear surface (11c) of the separable pin (11) is provided with a convex portion (26, 27) engageable with the recess (16, 17), and a force (Fin) required to insert the separable pin into the hole of the separable pin (25) of the holder is greater than a force (Fout) required to remove the separable pin from the hole of the separable pin (25) of the holder. [3] Method for producing a holder (21) of a zipper separating insert (1), in which the holder (21) is provided with a convex portion (26, 27) on an inner surface (25a, 25b) of a hole of the separable pin (25) into or from which a separable pin (11) can be inserted and removed, the holder (21) is manufactured by injection molding using a fixed mold (5), a movable mold (6) adapted to reciprocate in a front-back direction with respect to the fixed mold (5), and a first and a second slider (7, 8) adapted to reciprocate in an up-down direction with respect to the fixed mold (5), and a convex portion forming portion (26z) for forming the convex portion (26, 27) is formed by abutting a first recess (26x) formed in the first slider (7) against a second recess (26y) formed in the second slider (8). ADVANTAGEOUS EFFECTS OF THE INVENTION

[0009] The present invention relates to a slide fastener and a method for manufacturing a holder of a slide fastener separator insert in which a user can conveniently recognize that a separable pin is inserted into a holder. BRIEF DESCRIPTION OF THE DRAWINGS [ Fig. 1] Fig. 1 is a front view of a slide fastener 100 according to a first embodiment of the present invention. [ Fig. 2] Fig. 2 is an enlarged front view showing a decoupling state of the first and second separating insert portions in which the first and second fastener tapes are separated from each other. [ Fig. 3] Fig. 3 is a side view of a slider shown by a dashed line. [ Fig. 4] Fig. 4 is a perspective view of the first separating insert portion and the second separating insert portion. [ Fig. 5A] Fig. 5A is a front view of the first separator insert portion viewed from a front surface side. [ Fig. 5B] Fig. 5B is a rear view of the first separator insert section viewed from the rear. [ Fig. 5C] Fig. 5C is a right side widthwise view of the first separator insert section. [ Fig. 6A] Fig. 6A is a front view of the second separator insert section viewed from the front. [ Fig. 6B] Fig. 6B is a rear view of the second separator insert section viewed from the rear. [ Fig. 6C] Fig. 6C is a left side view of the second partition insert section, viewed from the left side in the width direction. [ Fig. 7A] Fig. Fig. 7A is a front view of the second partition insert portion as seen from the front surface side, and is a cross-sectional view of a retaining box taken along a line AA in Fig. 6C. [ Fig. 7B] Fig. Fig. 7B is a rear view of the second separating insert section, seen from the rear, and is a cross-sectional view of the retaining box along a line BB in Fig. 6C. [ Fig. 7C] Fig. Fig. 7C is a left side view of the second partition insert portion as seen from the left side in the width direction, and is a cross-sectional view of the retaining box taken along a line CC in Fig. 6A. [ Fig. 8] Fig. 8 is a partial cross-sectional view showing a state in which a separable pin is inserted into a hole of the separable pin of a holder, viewed from the width direction. [ Fig. 9] Fig. 9 is an enlarged perspective view showing a decoupling state of first and second partition insert portions in a slide fastener according to a second embodiment. [ Fig. 10] Fig. 10 is a perspective view of the first separating insert portion and the second separating insert portion. [ Fig. 11A] Fig. 11A is a front view of the first separator insert section viewed from the front. [ Fig. 11B] Fig. 11B is a rear view of the first separator insert section as seen from the rear. [ Fig. 11C] Fig. 11C is a view of the first separator insert section as seen from the right side in the width direction. [ Fig. 12A] Fig. 12A is a front view of the second separator insert portion viewed from the front surface side. [ Fig. 12B] Fig. 12B is a rear view of the second separator insert section viewed from the rear. [ Fig. 12C] Fig. 12C is a left side view of the second partition insert section, viewed from the left side in the width direction. [ Fig. 13A] Fig. 13A is a front view of the second separating insert portion as seen from the front surface side, and is a cross-sectional view of a holder taken along a line AA in Fig. 12C. [ Fig. 13B] Fig. Fig. 13B is a rear view of the second separating insert portion as seen from the rear side, and is a cross-sectional view of the holder taken along a line BB in Fig. 12C. [ Fig. 13C] Fig. Fig. 13C is a left side view of the second separator insert section as seen from the left side and is a cross-sectional view of the holder taken along a line CC in Fig. 12A. [ Fig. 14] Fig. 14 is a partial cross-sectional view showing a state in which a separable pin is inserted into a hole of the separable pin of a holder, viewed from the width direction. [ Fig. 15] Fig. 15 is a perspective view of a mold used in a method of manufacturing a holder. [ Fig. 16] (a) of Fig. Fig. 16 is a side view of the first and second slides in the mold opening state, seen from the width, (b) of Fig. Fig. 16 is a front view of the first and second slides in the mold opening state, seen from the front side, and (c) of Fig. 16 is a plan view of the first slider, seen from above. [ Fig. 17] (a) of Fig. 17 is a side view of the first and second sliders in a form-locking state, seen from the width direction, and (b) of Fig. 17 is a front view of the first and second sliders in the form-locking state, viewed from the front surface side. [ Fig. 18] (a) to (g) of Fig. 18 are process diagrams showing the sequences of an injection molding process. [ Fig. 19] Fig. 19 is a graph showing an example of the relationship between the distance (horizontal axis) of the separable pin into the hole of the separable pin and the insertion resistance (vertical axis). [ Fig. 20] Fig. 20 is a graph showing an example of the relationship between the distance (horizontal axis) of the separable pin from the hole of the separable pin and the withdrawal resistance (vertical axis). DESCRIPTION OF THE EMBODIMENTS

[0010] Hereinafter, a slide fastener and a method for manufacturing a fastener separator holder according to embodiments of the present invention will be described in detail with reference to the drawings.

[0011] In this specification, an "up-down direction" refers to a sliding direction of a slider, a longitudinal direction of a zipper or a zipper tape, and a direction of insertion or removal of a separable pin into or from a holder. In the "up-down direction," a direction in which the slider moves to connect the left and right rows of elements is referred to as "up," and a direction in which the slider moves to separate the left and right rows of elements is referred to as "down."

[0012] In addition, a “left-right direction” refers to a direction in which a pair of element rows are arranged perpendicular to the sliding direction of the slider, and may also be referred to as the width direction of a zipper, a zipper tape, an element, a separable pin, and a holder.

[0013] Furthermore, a "front-back direction" is a direction orthogonal to the up-down direction and the left-right direction and can be referred to as a thickness direction of a zipper, a zipper tape, an element, a separable pin, and a holder. [First embodiment]

[0014] Fig. 1 is a front view of a slide fastener 100 according to a first embodiment of the present invention. Fig. 2 is an enlarged front view showing a decoupling state of the first and second separating insert portions in which the first and second fastener tapes are separated from each other. Fig. 3 is a side view of a slider shown by a dashed line.

[0015] As in Fig. 1 and Fig. As shown in FIG. 2, the slide fastener 100 includes a pair of first and second zipper tapes (hereinafter, a zipper tape is simply referred to as a "tape") 30A, 30B on the left and right sides, a slider 40 that opens and closes a gap between the first and second tapes 30A, 30B by a user moving it in the up-down direction, and a zipper separator 1 (hereinafter referred to as a "separator") according to an embodiment of the present invention formed at lower end portions of the first and second tapes 30A, 30B in a longitudinal direction (up-down direction). In this example, the number of sliders 40 between the first and second tapes 30A, 30B is one, and may be two or more.

[0016] The first and second bands 30A, 30B include strip-shaped fastening bands (hereinafter also referred to simply as "band") 31a, 31b elongated in the up-down direction, loop fastener elements (hereinafter also referred to simply as "element") 32 attached along inner edge portions that are opening and closing side edge portions in a width direction of the bands 31a, 31b, and upper stoppers 33 each limiting the upward movement of the slider 40.

[0017] Hereinafter, the band 31a constituting the first band 30A may be referred to as the first band, and the band 31b constituting the second band 30B may be referred to as the second band. In this example, the bands 31a, 31b are formed by weaving or knitting polyamide fibers, polyester fibers, acrylic fibers, and the like, and each of the elements 32 is made of a synthetic resin such as polyester or nylon, but is not limited to these. The element 32 is not limited to a loop element and may be of a type in which each element is independent.

[0018] The slider 40 comprises a slider body 41 and a cable 42 connected to the slider body 41. With reference to Fig. 3, in which a side surface of the slider 40 is indicated by a dashed line, the slider body 41 includes an upper blade 43 disposed at a front side of the first and second belts 30A, 30B, and a lower blade 44 disposed at a rear side of the first and second belts 30A, 30B. The upper blade 43 and the lower blade 44 are connected to each other by a guide post 45 at an upper and middle position in the left-right direction between the upper blade 43 and the lower blade 44, thereby defining a Y-shaped element guide path branching upward between the upper blade 43 and the lower blade 44.

[0019] Reference number 46 in the Fig. 1 and Fig. 3 denotes a tension holding portion to which the tension 42 is coupled, and the tension holding portion 46 protrudes from the upper sheet 43. In a state in which lower end portions of the Fig. 1 are coupled to each other by a separator insert 1 described later. When the user holds the pull 42 to move the slider body 41 to an upper side, the left and right members 32 pass through the member guide path between the upper blade 43 and the lower blade 44, and the space between the first and second bands 30A, 30B is closed. When the slider body 41 is moved to the lower side, the left and right members 32 are disengaged from each other, and the space between the first and second bands 30A, 30B is opened.

[0020] A sublime section 43a (see Fig. 6), which is raised toward one side of the lower sheet 44, is provided on the left and right sides below the upper sheet 43 so that the left and right elements 32 are not detached from the element guide track. A raised portion 44a, which is slightly raised toward one side of the upper sheet 43, is also provided on the left and right sides below the lower sheet 44. A distance T1 between the raised portions 43a, 44a is the minimum distance between the upper sheet 43 and the lower sheet 44. This minimum distance T1 is smaller than the maximum thickness of the element 32 in the front-to-back direction and greater than the thickness of the belt 31.

[0021] The separator insert 1 can be formed by injection molding or extrusion molding a thermoplastic resin such as polyacetal, polyamide, polypropylene, and polybutylene terephthalate on a belt reinforcement portion 31c in which the lower end portions of the left and right belts 31a, 31b are reinforced with a thermoplastic resin. The belt reinforcement portion 31c is formed by welding a thermoplastic resin film such as polyamide or polyethylene to the lower end portions of the left and right belts 31a, 31b by ultrasonic processing or the like, or by allowing the thermoplastic resin liquid to permeate and solidify. The belt reinforcement portion 31c is preferably provided over the entire widthwise length of the belts 31a, 31b.

[0022] The separating insert 1 comprises a first separating insert portion 10 provided at a lower end portion of the first band 30A, and a second separating insert portion 20 provided at a lower end portion of the second band 30B. The first separating insert portion 10 can be coupled to and decoupled from the second separating insert portion 20; a coupling state of the first and second separating insert portions 10, 20 is shown in Fig. 1, and a decoupling state of the first and second separating insert sections 10, 20 is shown in Fig. 2 shown enlarged.

[0023] Fig. 4 is a perspective view of the first separating insert portion 10 and the second separating insert portion 20. Fig. 5A is a front view of the first separating insert portion 10 as seen from a front surface side, Fig. 5B is a rear view of the first separating insert portion 10 as seen from a rear surface side, and Fig. 5C is a view of the first partition insert portion 10 as seen from the right side in the width direction.

[0024] As in Fig. 1 and Fig. 2 and Fig. 4 to 5C, the first separation insert portion 10 includes a separable pin 11 which is long in the up-down direction and provided on a widthwise inner edge side of the lower end portion of the first band 30A, a first reinforcing strip portion 12 which is separated from the separable pin 11 to the left in the width direction and is provided substantially parallel to the separable pin 11 and is long in the up-down direction, and a first coupling portion 13 which connects the separable pin 11 and the first reinforcing strip portion 12 in the width direction.

[0025] In the front-to-rear direction, the thickness of the separable pin 11 is slightly larger than the thickness of the first band 31a. Therefore, a front surface 11b and a rear surface 11c of the separable pin 11 are slightly raised from a front surface and a rear surface of the first band 31a. The degree of elevation of the front surface 11b and the rear surface 11c of the separable pin 11 from the front surface and rear surface of the band 31 is the same as or slightly less than the degree of elevation of the front surface and rear surface of the member 32 from the front surface and rear surface of the bands 31a, 31b.

[0026] The detachable pin 11 has a projection 11a projecting to the right from an upper right end portion. The projection 11a engages a recess 21c of a retaining pin 21b, which will be described later.

[0027] The separable pin 11 is inserted into or removed from a hole of the separable pin 25 of a holder 21 (described later) of the second separating insert portion 20, so that the first separating insert portion 10 is coupled to and uncoupled from the second separating insert portion 20.

[0028] Recesses 16, 17 are provided in lower portions of the front surface 11b and the rear surface 11c of the separable pin 11, respectively, and are recessed in a direction in which the thickness of the separable pin 11 is reduced in the front-rear direction. The recesses 16, 17 are located slightly above the lower end portions of the front surface 11b and the rear surface 11c. The recesses 16 and 17 are not necessarily provided on both the front surface 11b and the rear surface 11c of the separable pin 11, but may be provided on at least one of the front surface 11b and the rear surface 11c. Of the recesses 16, 17, the recess provided on the front surface 11b is referred to as the front recess 16, and the recess provided on the rear surface 11c is referred to as the rear recess 17.

[0029] The front recess 16 includes an upper inclined surface 16d that slopes from an upper end portion of the front recess 16 toward a rear side in an insertion or withdrawal direction (up-down direction) of the separable pin 11 and increases the thickness of the front recess 16, a lower inclined surface 16e that slopes from a lower end portion of the front recess 16 toward a rear side in the insertion or withdrawal direction of the separable pin 11 and increases the thickness of the front recess 16, and a parallel surface 16c that connects the upper inclined surface 16d and the lower inclined surface 16e and is parallel to the insertion or withdrawal direction (up-down direction) and a width direction (left-right direction) of the separable pin 11.

[0030] The back recess 17 includes an upper inclined surface 17d that is inclined from an upper end portion of the back recess 17 in the insertion or withdrawal direction (up-down direction) of the separable pin 11 to a front side toward the bottom and increases the thickness of the back recess 17, a lower inclined surface 17e that is inclined from a lower end portion of the back recess 17 in the insertion or withdrawal direction of the separable pin 11 to a front side and increases the thickness of the back recess 17, and a parallel surface 17c that connects the upper inclined surface 17d and the lower inclined surface 17e and is parallel to the insertion or withdrawal direction (up-down direction) and the width direction (left-right direction) of the separable pin 11.

[0031] The front recess 16 and the rear recess 17 are formed over an entire widthwise length of the front surface 11b and the rear surface 11c of the separable pin 11. Therefore, the front recess 16 and the rear recess 17 penetrate the separable pin 11 in the widthwise direction and have left openings 16a, 17a on the left side of the widthwise direction and right openings 16b, 17b on the right side of the widthwise direction, respectively. The parallel surface 16c, which is a bottom surface of the front recess 16, is located on a front side of a front surface 13a of the first coupling portion 13, which is adjacent to the parallel surface 16c in the widthwise direction. Therefore, a step 14 is formed between the parallel surface 16c of the front recess 16 and the front surface 13a of the first coupling portion 13.On the other hand, the parallel surface 17c, which is a bottom surface of the rear recess 17, and the rear surface 13b of the first coupling portion 13, which is adjacent in the width direction, are smoothly connected and flush with each other, and both the parallel surface 17c and the rear surface 13b form the same plane.

[0032] Of the front surface 11b of the separable pin 11, an upper portion 18a of the front surface, located above the front recess 16, is a parallel surface parallel to the top-down direction and the width direction. Of the front surface 11b of the separable pin 11, a lower portion 18b of the front surface, located below the front recess 16, includes a parallel surface 18c, a first inclined surface 18d, and a second inclined surface 18e. The parallel surface 18c is connected to the lower end portion of the front recess 16 and extends parallel to the top-down direction and the width direction. The first inclined surface 18d is connected to a lower end portion of the parallel surface 18c and is inclined downward toward the rear surface 11c.The second inclined surface 18e connects a lower end portion of the first inclined surface 18d and a lower surface 11d of the separable pin 11 and is inclined downward toward the rear surface 11c. The inclination of the second inclined surface 18e is greater than the inclination of the first inclined surface 18d.

[0033] Of the rear surface 11c of the separable pin 11, an upper rear surface portion 19a located above the rear recess 17 is a parallel surface parallel to the top-down direction and the width direction. Of the rear surface 11c of the separable pin 11, a lower rear surface portion 19b located below the rear recess 17 includes a parallel surface 19c and an inclined surface 19d. The parallel surface 19c is connected to the lower portion of the rear recess 17 and extends parallel to the top-down direction and the width direction. The inclined surface 19d connects the lower portion of the parallel surface 19c and the lower surface 11d of the separable pin 11 and is inclined downward toward the front surface 11b.The inclined surface 19d connects the lower end portion of the first inclined surface 18d and the lower surface 11d of the separable pin 11.

[0034] The first reinforcing strip portion 12 serves to reinforce the attachment of the separable pin 11 to the first band 31a by coupling it to the separable pin 11 via the first coupling portion 13. An upper end of the reinforcing strip portion 12 slightly protrudes beyond an upper end of the separable pin 11. A lower end of the separable pin 11 slightly protrudes downward from a lower end of the first reinforcing strip portion 12. The left-right width of the reinforcing strip portion 12 is larger than the left-right width of the separable pin 11.

[0035] Before molding the first partition insert portion 10 including the first reinforcing strip portion 12, a through-hole (not shown) penetrating the first band 31a in the front-to-back direction is provided in a portion of the left first band 31a corresponding to the first reinforcing strip portion 12 or the first coupling portion 13, and the thermoplastic resin is bonded between a front and rear surface of the first band 31a through the through-hole, so that the first reinforcing strip portion 12 and the first coupling portion 13 are firmly fixed to the front and rear surfaces of the first band 31a and a peeling strength of the first reinforcing strip portion 12 and the first coupling portion 13 with respect to the first band 31a is increased.Since the first reinforcing strip portion 12 and the first coupling portion 13 are firmly connected to the first band 31a, the separable pin 11 is firmly connected to the first band 31a.

[0036] Fig. 6A is a front view of the second separating insert portion 20 as seen from the front surface side, Fig. 6B is a rear view of the second separating insert portion 20 as seen from the rear surface side, and Fig. 6C is a left side view of the second partition insert portion 20 as viewed from the left in the width direction. Fig. Fig. 7A is a front view of the second partition insert portion 20 as seen from the front side and a cross-sectional view of a holding box 21a taken along a line AA in Fig. 6C. Fig. Fig. 7B is a rear view of the second partition insert portion 20 as seen from the rear side and a cross-sectional view of the holding box 21a taken along a line BB in Fig. 6C. Fig. Fig. 7C is a left side view of the second partition insert portion 20 as seen from the left side, and is a cross-sectional view of the holding box 21a taken along a line CC in Fig. 6A.

[0037] As in the Fig. 1 and Fig. 2 and Fig. 6A to 7C, the second partition insert portion 20 includes a holder 21 provided to cover the widthwise inner edge side of the lower end portion of the second band 30B, a second reinforcing strip portion 22 extending upwardly from the right side surface of the holder 21 to the right in the width direction, and a second coupling portion 23 coupling the holder 21 and the second reinforcing strip portion 22.

[0038] The holder 21 comprises a holding box 21a which has in a left half section a hole of the separable pin 25 (see Fig. 4 and the like) into or from which the separable pin 11 can be inserted or removed in the up-down direction (longitudinal direction of the slide fastener 100), and a holding pin 21b projecting upward from a right half portion of an upper surface of the holding box 21a.

[0039] In the front-to-back direction, the retaining box 21a is thicker than the retaining pin 21b or the second reinforcing strip portion 22. In the front-to-back direction, the retaining pin 21b has the same thickness as the separable pin 11. When the separable pin 11 of the first separation insert portion 10 is inserted into the hole of the separable pin 25 of the retaining box 21a of the second separation insert portion, the first and second separation insert portions 10, 20 are in a coupling state (see Fig. 1), and the lower end portions of the first and second bands 30A, 30B are in an alignment state. When the separable pin 11 is removed from the hole of the separable pin 25 of the retaining box 21a, the connection between the first and second separating insert portions 10, 20 is released.

[0040] The retaining pin 21b is provided along the widthwise inner edge side of the second band 30B and is formed integrally with the retaining box 21a. The retaining pin 21b has a recess 21c (see Fig. 2) at an upper left end portion, which receives the projection 11a of the separable pin 11 in the coupling state in which the retaining pin 21b is coupled to the first separating insert portion 10. In the coupling state of the first and second separating insert portions 10, 20, an upper end of the retaining pin 21b is located slightly below an upper end of the separable pin 11.

[0041] The second reinforcing strip portion 22 has substantially the same shape as the first reinforcing strip portion 12 except for a base of the second reinforcing strip portion 22 connected to the holder 21, and has the same length in the top-to-bottom direction and the same thickness in the front-to-back direction as the first reinforcing strip portion 12.

[0042] The second reinforcing strip portion 22 or the second coupling portion 23 is provided with a through-hole (not shown) penetrating the second band 31b in the front-rear direction at a portion of the right second band 31b corresponding to the second reinforcing strip portion 22 or the second coupling portion 23 before injection molding of the second partition insert portion 20. Since the thermoplastic resin is bonded between the front and rear surfaces of the second band 31b through the through-hole, the second reinforcing strip portion 22 and the second coupling portion 23 are firmly attached to the front and rear surfaces of the second band 31b, and the peeling strength of the second reinforcing strip portion 22 and the second coupling portion 23 with respect to the second band 31b is increased.Since the second reinforcing strip portion 22 and the second coupling portion 23 are firmly connected to the second band 31b, the holder 21 is firmly connected to the second band 31b.

[0043] As in Fig. 2, a region between the separable pin 11 and the first reinforcing strip portion 12 of the first separating insert portion 10 and above the holding box 21a, and a region between the holding pin 21b and the second reinforcing strip portion 22 of the second separating insert portion 20 and above the holding box 21a are thin guide portions 15, 24 having a relatively small thickness with respect to the separable pin 11, the holding pin 21b, and the first and second reinforcing strip portions 12 and 22, which are raised from the front and rear surfaces of the band 31. The slider 40 can be moved from the state of Fig. 1 to the lowest position in which the slider 40 rests against the holding box 21a. When the slider 40 is lowered to the lowest position, the raised sections 43a, 44a (see Fig. 3) on the left and right side portions of the upper and lower blades 43, 44 of the slider 40 to the thin guide portions 15, 24 of the first and second separating insert portions 10, 20. When the slider 40 is moved from the state of Fig. 1 is moved to the lowest position in which the slider 40 abuts the separating insert 1, the separable pin 11 of the first separating insert section 10 is removed from the holding box 21a. When the separable pin 11 is further pulled upward through the element guide path between the upper blade 43 and the lower blade 44 of the slider 40, the coupling between the first separating insert section 10 and the second separating insert section 20 can be released, and the first band 30A and the second band 30B are separated. At this time, the slider 40 remains in the second rail 30B.

[0044] The holder 21 according to the first embodiment includes the retaining pin 21b arranged parallel to a right side (second side of the band 31b) with respect to an upper portion of the separable pin 11 extending vertically, and the retaining box 21a including a separable pin hole 25 into or from which a lower portion of the separable pin 11 can be inserted or removed. The separable pin hole 25 is formed in a portion on an upper surface of the retaining box 21a on a left side (first band side 31a). Similarly, the retaining pin 21b is connected to a portion on the upper surface of the retaining box 21a on a right side (second band side 31b) in the left-right direction in a state of protruding upward.

[0045] The retainer box 21a is a hexagonal body having front, rear, left, right, upper, and lower surfaces. In the example shown, each surface is formed in a flat shape. The flat shape includes not only a plane but also an arcuate curved surface (arc-shaped bulge surface and arc-shaped recessed surface). In the example shown, for example, the front surface and the rear surface are arcuate curved surfaces (more precisely, surfaces that gradually curve toward the front from both ends of the entire width to the central portion) among the arcuate curved surfaces. In addition, the retainer box 21a has a band groove 61 into which the first band 31a is inserted on a left side surface of the left and right side surfaces on the first band 31a side. The band groove 61 is a groove extending in the up-down direction to open the top surface and close a bottom surface.The hole of the separable pin 25 communicates with the second side of the band 31b with respect to the band groove 61, and the upper side of the hole of the separable pin 25 opens. On the other hand, at the bottom of the hole of the separable pin 25, the first side of the band 31a is closed, and the second side of the band 31b penetrates, and a slide hole 63 is provided.

[0046] The holding box 21a includes an upper-lower extension wall 53 extending from a lower end portion of the holding pin 21b to the lower side, a front body wall 54 and a rear body wall 55 projecting parallel to the first band 31a side in the left-right direction from both the front and rear end portions of the upper-lower extension wall 53, a connecting wall 56 connecting end portions of the front body wall 54 and the rear body wall 55 on the first band 31a side at a lower end portion of the entire length in the upper-lower direction, and groove walls 57, 57 projecting from end portions of the front body wall 54 and the rear body wall 55 on the first band 31a side to form a groove formed between the front body wall 54 and the To narrow the front and rear space formed by the rear body wall 55.A space formed between the pair of front and rear groove walls 57, 57 serves as a band groove 61. Each of the groove walls 57 is formed, in the example shown, over the entire area of ​​the upper surface of the connecting wall 56 in the entire length of the front body wall 54 and the rear body wall 55 in the top-down direction. Accordingly, the connecting wall 56 is formed continuously with the lower side of the pair of front and rear groove walls 57, 57. Moreover, the holder 21 according to the present embodiment has an asymmetrical shape, and the band groove 61 is located on a rear surface side with respect to a central portion in the front-to-rear direction of the holder 21 and is closer to the rear body wall 55 than to the front body wall 54.

[0047] The upper-lower extension wall 53 has the shape of a bar with a rectangular cross section. Furthermore, the left and right widths of the upper-lower extension wall 53 are wider than those of the support pin 21b in the example shown. A surface on the first band 31a side (surface on the side of a hole of the separable pin 25) of the left and right side surfaces of the upper-lower extension wall 53 is formed to be substantially flush with the corresponding surface of the support pin 21b, and a surface on the second band 31b side of the left and right side surfaces of the upper-lower extension wall 53 protrudes to a right side of the support pin 21b. An upper-lower width of the upper-lower extension wall 53 is the same as an upper-lower width of the support pin 21b.The front side body wall 54 and the rear side body wall 55, which protrude from both the front and rear ends of the upper-lower extension wall 53 in the width direction (first band 31a side), are both plate-shaped.

[0048] The connecting wall 56 includes a groove closing portion 56a that closes a bottom of the band groove 61, and a hole closing portion 56b that closes the first side of the band 31a located below the hole of the separable pin 25. Therefore, a space surrounded by the connecting wall 56 (hole closing portion 56b), the upper / lower extension wall 53, the front body wall 54, and the rear body wall 55 serves as the slider hole 63 into which a first slider 7 (see Fig. 15) is used for resin molding to be described later, and the slide hole 63 communicates with the hole of the separable pin 25.

[0049] Inner surfaces forming the hole of the separable pin 25 of the holder 21 include a front side surface 25a formed by a rear surface of the front body wall 54 and facing the front surface 11b of the separable pin 11, a rear side surface 25b formed by a front surface of the rear body wall 55 and facing the rear surface 11c of the separable pin 11, a right side surface 25c formed by a side surface (left side surface) of the upper-lower extension wall 53 on the first side of the band 31a and facing a side surface (right side surface) of the separable pin 11 on the second side of the band 31b, and a pair of left side surfaces 25d, 25d formed by side surfaces (right side surfaces) of the pair of front and rear groove walls 57,57 are formed on the second side of the band 31b and face the side surfaces (left side surface) of the separable pin on the first side of the band 31a. Since the band groove 61 is arranged between the pair of left side surfaces 25d, 25d in the front-to-back direction, the two left side surfaces 25d, 25d are separated from each other in the front-to-back direction.

[0050] Among the inner surfaces forming the hole of the separable pin 25 of the holder 21, the front side surface 25a and the rear side surface 25b, which face the front surface 11b and the rear surface 11c of the separable pin 11, are each provided with convex portions 26, 27 that can be engaged with the front recess 16 and the rear recess 17 of the separable pin 11. The convex portions 26, 27 are not necessarily provided on both the front side surface 25a and the rear side surface 25b, but may be provided on at least one of the front side surface 25a and the rear side surface 25b.Of the convex portions 26, 27, the convex portion provided on the front side surface 25a (rear wall of the front side body wall 54) is referred to as a front side convex portion 26, and the convex portion provided on the rear side surface 25b is referred to as a rear side convex portion 27.

[0051] As in Fig. 7A, Fig. 7B and Fig. 7C, the front convex portion 26 and the rear convex portion 27 have an asymmetrical shape with respect to a plane P passing through a central portion of the front convex portion 26 and the rear convex portion 27 in the insertion or withdrawal direction (up-down direction) of the separable pin 11 and perpendicular to the insertion or withdrawal direction.

[0052] Specifically, the front-side convex portion 26 includes an upper inclined surface 26a inclined from an upper end portion of the front-side convex portion 26 toward the rear side in the insertion or withdrawal direction (up-down direction) of the separable pin 11 to increase the thickness of the front-side convex portion 26, and a lower inclined surface 26b inclined from a lower end portion of the front-side convex portion 26 toward the rear side in the insertion or withdrawal direction of the separable pin 11 to increase the thickness of the front-side convex portion 26. The inclination of the upper inclined surface 26a is greater than the inclination of the lower inclined surface 26b.

[0053] Furthermore, the back convex portion 27 includes an upper inclined surface 27a that slopes toward the front side as it extends from an upper end portion of the back convex portion 27 toward the lower side in the insertion or withdrawal direction (up-down direction) of the separable pin 11 to increase the thickness of the back convex portion 27, and a lower inclined surface 27b that slopes toward the top side from a lower end portion of the back convex portion 27 toward the front side in the insertion or withdrawal direction of the separable pin 11 to increase the thickness of the back convex portion 27. The slope of the upper inclined surface 27a is greater than the slope of the lower inclined surface 27b.

[0054] As described above, the inclination of the upper inclined surfaces 26a, 27a, which are brought into contact with the separable pin when the separable pin 11 is inserted into the separable pin hole 25, is set relatively steep, and the inclination of the lower inclined surfaces 26b, 27b, which are brought into contact with the separable pin when the separable pin 11 is removed from the separable pin hole 25, is set relatively shallow. Therefore, as described later, a force Fin required to insert the separable pin 11 into the separable pin hole 25 is made larger than a force Fout required to remove the separable pin 11 from the separable pin hole 25.

[0055] The front convex portion 26 and the rear convex portion 27 each include parallel surfaces 26c, 27c connecting the upper inclined surfaces 26a, 27a and the lower inclined surfaces 26b, 27, and extending parallel to the insertion or withdrawal direction (up-down direction) and the width direction (left-right direction) of the separable pin 11. These parallel surfaces 26c, 27c are arranged to intersect with the plane P.

[0056] As described above, the front recess 16 and the rear recess 17 of the separable pin 11 are formed over the entire length in the width direction of the separable pin 11, while the front convex portion 26 and the rear convex portion 27 of the holder 21 are formed over a part of the length in the width direction of the hole of the separable pin 25 and not over the entire width direction of the hole of the separable pin 25. A length M1 (see Fig. 5A and Fig. 5B) of the front recess 16 and the rear recess 17 in the width direction is greater than a length M2 (see Fig. 7A and Fig. 7B) of the front convex portion 26 and the rear convex portion 27 in the width direction (M1 > M2). A length N1 (see Fig. 5A and Fig. 5B) in the top-bottom direction of the front recess 16 and the rear recess 17 is substantially equal to a length N2 (see Fig. 7A and Fig. 7B) in the up-down direction of the front convex portion 26 and the back convex portion 27 (N1 ≒ N2).

[0057] Fig. Fig. 8 is a partial cross-sectional view showing a state in which the separable pin 11 is inserted into the hole of the separable pin 25 of the holder 21, viewed in the width direction. In Fig. 8, the retaining box 21a of the holder 21 is shown, while the retaining pin 21b is not shown. As in Fig. 8, in a state where the separable pin 11 is fully inserted into the hole 25 of the separable pin holder 21, the front convex portion 26 and the rear convex portion 27 of the holder 21 are connected to the front recess 16 and the rear recess of the separable pin 11, so that the separable pin 11 is prevented from coming out of the holder 21. Therefore, the separable pin 11 is not displaced after the separable pin 11 is assembled into the holder 21, so that element misassembly is unlikely and the slider 40 can be easily pulled up.

[0058] Here, at a bottom of the front recess 16 and the rear recess 17 of the separable pin 11, a portion having the largest dimension in the front-rear direction is a portion between a pair of front and rear parallel surfaces 18c, 19c, and a dimension in the front-rear direction of the portion is L1. A portion of the hole of the separable pin 25 having the smallest dimension in the front-rear direction is a portion between parallel surfaces 26c, 27c of the pair of front and rear convex portions 26, 27, and a dimension of the portion in the front-rear direction is L2. Since the size ratio between the dimensions L1 and L2 is L1>L2, a lower end portion (left end portion in Fig. 8) of the separable pin 11 into the pair of front and rear convex portions 26, 27 of the hole of the separable pin 25 when the separable pin 11 is inserted from above (right side in Fig. 8) is inserted into the hole of the separable pin 25. L1 is preferably set so that the distance to the hole 25 of the separable pin is small to prevent rattling when the separable pin 11 is inserted.

[0059] More specifically, when the separable pin 11 is inserted into the hole of the separable pin 25, the first and second inclined surfaces 18d, 18e on a front side and the inclined surface 19d on a back side of the separable pin 11 come into contact with the upper inclined surfaces 26a, 27a of the pair of front and rear convex portions 26, 27. By providing a plurality of inclined surfaces 26a, 27a, 18d, 18e, 19d on the holder 21 and the separable pin 11, the separable pin 11 is guided between the pair of front and rear convex portions 26, 27 with low friction.The front and rear parallel surfaces 18c, 19c of the separable pin 11 come into contact with the upper inclined surfaces 26a, 27a and the parallel surfaces 26c, 27c of the convex portions 26, 27, and the separable pin 11 rides over the convex portions 26, 27 while pushing the holder 21 outward in the front-rear direction, whereby the front recess 16 and the rear recess 17 of the separable pin 11 engage with the front convex portion 26 and the rear convex portion 27 of the holder 21.

[0060] Here, as described above, the inclination of the upper inclined surfaces 26a, 27a is greater than the inclination of the lower inclined surfaces 26b, 27b, and the inclination of the upper inclined surfaces 26a, 27a, which are brought into contact with the separable pin when the separable pin 11 is inserted into the hole 25 of the separable pin, is relatively steep. Therefore, the force Fin required to insert the separable pin 11 into the hole of the separable pin 25, that is, a force required for the separable pin 11 to ride over and engage with the convex portions 26, 27, is set to a relatively large value. Specifically, Fin is set to 4 N to 6 N. A method for measuring Fin will be described later.

[0061] Therefore, a relatively large force is required to fully insert the separable pin 11 into the separable pin hole 25, so that the user can obtain an insertion feeling or a click feeling that the separable pin 11 is fitted into the holder 21, and can adequately recognize that the separable pin 11 is fully inserted into the holder 21 due to a resistance feeling and a sound when the separable pin 11 passes over the convex portions 26, 27.

[0062] Specifically, in the present embodiment, the recesses 16, 17 are provided on the front surface 11b and the rear surface 11c of the separable pin 11, respectively, and the convex portions 26, 27 are provided on the front side surface 25a and the rear side surface 25b of the hole of the separable pin 25, respectively. Therefore, the force Fin required to engage the convex portions 26, 27 with the recesses 16, 17 becomes larger, allowing the user to more reliably obtain an insertion or click feeling that the separable pin 11 is fitted into the holder 21 and more appropriately recognize that the separable pin 11 is fully inserted into the holder 21.When the positions of the recess 16 and the recess 17 are separated from each other in the insertion or removal direction, the engagement of the recess 16 and the engagement of the recess 17 are shifted relative to each other, so it is preferable that the positions of the recess 16 and the recess 17 in the insertion or removal direction are the same or close to each other. The same applies to the corresponding convex portions 26, 27.

[0063] Furthermore, since the convex portions 26, 27 include the parallel surfaces 26c, 27c that connect the upper inclined surfaces 26a, 27a and the lower inclined surfaces 26b, 27b with low friction and are parallel to the insertion or withdrawal direction (up-down direction) and the width direction (left-right direction) of the separable pin 11, the convex portions 26, 27 and the recesses 16, 17 can be engaged with little rattling.

[0064] The recesses 16, 17 penetrate the separable pin 11 in the width direction and have the left openings 16a, 17a and the right openings 16b, 17b (see Fig. 5A and Fig. 5B). Accordingly, even if dust enters the recesses 16, 17, it can be easily discharged from the left openings 16a, 17a and the right openings 16b, 17b. If the above-described dust accumulates in the recesses 16, 17, the user may not get a proper insertion feeling when inserting the separable pin 11 into the hole of the separable pin 25, which is undesirable.

[0065] Since, as described above, the length M1 (see Fig. 5A and Fig. 5B) of the recesses 16, 17 in the width direction is greater than the length M2 (see Fig. 7A and Fig. 7B) of the convex portions 26, 27 in the width direction, the convex portions 26, 27 can be easily inserted into the recesses 16, 17. For example, the separable pin 11 can be inserted while being inclined in the width direction (left-right direction) with respect to the hole of the separable pin 25. In this case, too, the recesses 16, 17 of the separable pin are firmly connected to the convex portions 26, 27 of the hole of the separable pin 25. Even if the convex portions 26, 27 come into contact with the recesses 16, 17 after engagement, the convex portions 26, 27 are elastically deformed in the width direction in the recesses 16, 17, so that local stresses can be prevented from occurring in the convex portions 26, 27.

[0066] When the recesses 16, 17 are engaged with the convex portions 26, 27, a gap between the recesses 16, 17 and the convex portions 26, 27 in the width direction (left-right direction) is larger than a gap between the recesses 16, 17 and the convex portions 26, 27 in the insertion or withdrawal direction (up-down direction) of the separable pin 11. With this configuration, when the recesses 16, 17 and the convex portions 26, 27 are engaged with each other, an insertion feeling that the recesses 16, 17 are fitted into the convex portions 26, 27 can be easily fitted into the recesses 16, 17. The first gap in the width direction is a difference M1 - M2 between the length M1 (see Fig. 5A and Fig. 5B) in the width direction of the recesses 16, 17 and the length M2 (see Fig. 7A and Fig. 7B) in the width direction of the convex portion 26, 27 and is relatively large. The latter gap in the top-down direction is a difference N1 - N2 between the length N1 (see Fig. 5A and Fig. 5B) in the direction from top to bottom of the recesses 16, 17 and the length N2 (see Fig. 7A and Fig. 7B) in the top-down direction of the convex portions 26, 27 and is zero or very small.

[0067] When the separable pin 11 is released from the state of Fig. 8 upwards (in Fig. 8 to the right), the lower end section (left end section in Fig. 8) of the separable pin 11 with the pair of front and rear convex portions 26, 27 of the hole of the separable pin 25 as in the case of insertion.

[0068] More specifically, when the separable pin 11 is removed from the hole of the separable pin 25, the lower inclined surfaces 16e, 17e of the front and rear recesses 16, 17 of the separable pin 11 come into contact with the lower inclined surfaces 26b, 27b of the pair of front and rear convex portions 26, 27. By providing a plurality of inclined surfaces 26b, 27b, 16e, 17e on the holder 21 and the separable pin 11, the separable pin 11 is guided between the pair of front and rear convex portions 26, 27 with low friction.The front and rear parallel surfaces 18c, 19c of the separable pin 11 come into contact with the lower inclined surfaces 26b, 27b and the parallel surfaces 26c, 27c of the convex portions 26, 27, and the separable pin 11 rides over the convex portions 26, 27 while pushing the holder 21 outward in the front-rear direction, thereby releasing the engagement between the front recess 16 and the rear recess 17 of the separable pin 11 and the front convex portion 26 and the rear convex portion 27 of the holder 21.

[0069] Here, as described above, the inclination of the lower inclined surfaces 26b, 27b is smaller than the inclination of the upper inclined surfaces 26a, 27a, and the inclination of the lower inclined surfaces 26b, 27b, which are brought into contact with the separable pin when the separable pin 11 is removed from the separable pin hole 25, is relatively small. Therefore, the force Fout required to remove the separable pin 11 from the separable pin hole 25, that is, a force required for the separable pin 11 to ride over the convex portions 26, 27 and release the engagement, is set to be relatively small. Specifically, Fout is set to be smaller than Fin. A method for measuring Fout will be described later. [Second embodiment]

[0070] In the first embodiment, an example was described in which the first reinforcing strip portion 12 and the first coupling portion 13 are provided in the first separation insert portion 10, and the second reinforcing strip portion 22 and the second coupling portion 23 are provided in the second separation insert portion 20, but as in a second embodiment described later, the first separation insert portion 10 may not include the first reinforcing strip portion 12 and the first coupling portion 13, and the second separation insert portion 20 may not include the second reinforcing strip portion 22 and the second coupling portion 23.

[0071] Fig. 9 is an enlarged perspective view showing a decoupling state of the first and second partition insert portions 10, 20 in the slide fastener 100 according to the second embodiment. Fig. 10 is a perspective view of the first separating insert portion 10 and the second separating insert portion 20. Fig. 11A is a front view of the first separating insert portion 10 as seen from the front surface side, Fig. 11B is a rear view of the first separating insert portion 10 as seen from the rear surface side, and Fig. 11C is a view of the first partition insert portion 10 as seen from the right side in the width direction. Fig. 12A is a front view of the second separating insert portion 20 as seen from the front side, Fig. 12B is a rear view of the second separating insert portion 20 as seen from the rear side, and Fig. 12C is a left side view of the second separator insert portion 20 as seen from the left side. Fig. 13A is a front view of the second separating insert portion 20 as seen from the front side and a cross-sectional view of the holder 21 taken along a line AA in Fig. 12C. Fig. Fig. 13B is a rear view of the second separating insert portion 20 as seen from the rear side, and is a cross-sectional view of the holder 21 taken along a line BB in Fig. 12C. Fig. Fig. 13C is a left side view of the second separating insert portion 20 as seen from the left side, and is a cross-sectional view of the holder 21 taken along a line CC in Fig. 12A.

[0072] Since most parts of the separable pin 11 of the first separation insert portion 10 and the holder 21 of the second separation insert portion 20 according to the second embodiment are substantially the same as those of the first embodiment, the same portions are denoted by the same reference numerals, and the description thereof is simplified or omitted.

[0073] As in Fig. 9 and the like, the retaining pin 21b includes a locking portion 21d that protrudes toward the first band 31a from an upper end portion of a surface on the first band 31a side between the left and right side surfaces of the retaining pin 21b. The locking portion 21d is formed in a central portion in the front-to-rear direction of the retaining pin 21b. As shown in Fig. 11C, a locking groove portion 11e for receiving the locking portion 21d is formed to be recessed in an upper end portion of a surface on the second band 31b side between the left and right side surfaces of the separable pin 11.

[0074] Fig. Fig. 14 is a partial cross-sectional view showing a state in which the separable pin 11 is inserted into the hole of the separable pin 25 of the holder 21, as viewed from the width direction. Fig. 14, the holding box 21a of the holder 21 is shown, while the holding pin 21b is not shown. As in the first embodiment shown in Fig. 14, in a state where the separable pin 11 is fully inserted into the separable pin hole 25 of the holder 21, the front convex portion 26 and the rear convex portion 27 of the holder 21 are engaged with the front recess 16 and the rear recess 17 of the separable pin 11, so that the separable pin 11 is prevented from coming out of the holder 21. Therefore, the separable pin 11 is not displaced after the separable pin 11 is inserted into the holder 21, so that misinsertion of the element is unlikely and the slider 40 can be easily pulled up.

[0075] As in the first embodiment, in the present embodiment, the inclination of the upper inclined surfaces 26a, 27a is greater than the inclination of the lower inclined surfaces 26b, 27b, and the inclination of the upper inclined surfaces 26a, 27a, which are brought into contact with the separable pin when the separable pin 11 is inserted into the hole 25 of the separable pin, is relatively steep. Therefore, the force Fin required to insert the separable pin 11 into the hole of the separable pin 25, that is, a force required for the separable pin 11 to ride over and engage with the convex portions 26, 27, is set to a relatively large value. Specifically, Fin is set to 4 N to 6 N. A method for measuring Fin will be described later.

[0076] Therefore, a relatively large force is required to fully insert the separable pin 11 into the separable pin hole 25, so that the user receives an insertion feeling or a clicking feeling and can adequately recognize that the separable pin 11 is fully inserted into the holder 21 due to the resistance feeling and a sound when the separable pin 11 passes over the convex portions 26, 27.

[0077] When the separable pin 11 is released from the state of Fig. 14 upwards (in Fig. 14 to the right), the lower end section (left end section in Fig. 14) of the separable pin 11 into the pair of front and rear convex portions 26, 27 of the hole of the separable pin 25, as in the case of insertion.

[0078] As in the first embodiment, in the second embodiment, the inclination of the lower inclined surfaces 26b, 27b is smaller than the inclination of the upper inclined surfaces 26a, 27a, and the inclination of the lower inclined surfaces 26b, 27b that are brought into contact with the separable pin when the separable pin 11 is removed from the separable pin hole 25 is relatively small. Therefore, the force Fout required to remove the separable pin 11 from the separable pin hole 25, that is, a force required for the separable pin 11 to ride over the convex portions 26, 27 and release the engagement, is set to be relatively small. Specifically, Fout is set to be smaller than Fin. A method for measuring Fin will be described later.

[0079] Other effects of the second embodiment are similar to those of the first embodiment. [Method for manufacturing a holder]

[0080] A method for manufacturing the holder 21 according to the first and second embodiments of the present invention described above uses injection molding using a resin as a raw material. The following describes the method for manufacturing the holder 21 according to the second embodiment, but the same method can also be applied to the holder 21 according to the first embodiment (portions of the retaining box 21a and the retaining pin 21b excluding the second reinforcing strip portion 22 and the second coupling portion 23).

[0081] Fig. Fig. 15 is a perspective view showing a mold used in a method for manufacturing a holder. Here, (a) of Fig. 16 is a side view of the first and second slides in a mold opening state seen from the width direction, (b) of Fig. 16 is a front view of the first and second slides in the mold opening state as seen from the front surface side, and (c) of Fig. 16 is a plan view of the first slider as seen from above. In addition, (a) of Fig. 17 is a side view of the first and second sliders in a form-locking state, seen from the width direction, and (b) of Fig. Fig. 17 is a front view of the first and second sliders in the form-fitting state, viewed from the front surface side. Furthermore, (a) to (g) are shown in Fig. 18 process diagrams showing the sequences of an injection molding process.

[0082] As in Fig. 15, the injection mold used in this manufacturing method comprises a fixed mold 5, a movable mold 6 supported to reciprocate in the front-back direction with respect to the fixed mold 5, and first and second sliders 7, 8 adapted to reciprocate in the up-down direction with respect to the fixed mold 5.

[0083] In the mold-locking state, the injection mold forms a cavity 91 as a space corresponding to a shape of the holder 21, an inlet 92, which is an inlet 92 for molding an outer shape of the inlet resin portion 92r, as a passage communicating with the cavity 91, and a runner 93 as a passage communicating with the inlet 92.

[0084] The cavity 91 includes a retaining pin recess 21bx forming an outer shape of the retaining pin 21b, a retaining box recess 21ax forming an outer surface (so-called six surfaces) of the outer shape of the retaining box 21a, and a convex portion (convex portion 61x of the band groove, convex portion 25x of the hole of the separable pin, convex portion 63x of the slider hole) forming an inner surface (band groove 61, hole of the separable pin 25, slider hole 63) of the outer shape of the retaining box 21a.

[0085] The retaining box recess 21ax includes an upper-lower extension wall recess 53x forming an outer surface of the upper-lower extension wall 53 (side surface on the second side of the band 31b of the left and right side surfaces of the retaining box 21a, a part of a front surface of the retaining box 21a, and a part of a rear surface of the retaining box 21a), a front-side body wall recess 54x and a rear-side body wall recess 55x forming outer surfaces of the front-side body wall 54 and the rear-side body wall 55, respectively, a connecting wall recess 56x forming an outer surface of the connecting wall 56 (a part of the rear surface and a part of a side surface of the retaining box 21a), and a groove wall recess 57x forming an outer surface of the groove wall 57 (a part of the side surface of the retaining box 21a). Although the front side body wall recess 54x in Fig. 15 is not shown, the front side body wall recess 54x is provided in the movable mold 6 so as to be opposite to the rear side body wall recess 55x.

[0086] The convex portion includes the band groove convex portion 61x forming the band groove 61, the separable pin hole convex portion 25x (band groove side convex portion 25y opposite and groove side convex portion 25z) forming the hole of the separable pin 25, and the slider hole convex portion 63x forming the slider hole 63.

[0087] In the present embodiment, a parting line is formed in the holder 21, which serves as a product, as an intermediate position of the entire width in the front-back direction of the holder 21. Therefore, the fixed mold 5 and the movable mold 6 are shaped to have a front-back symmetrical shape. On the front side of the fixed mold 5 (which abuts the movable mold 6), a semi-recessed holding pin portion 21by which is a rear half of the holding pin recess 21bx, a semi-recessed upper-lower extension wall portion 53y which is a rear half of the rear body wall recess 55x and the upper-lower extension wall recess 53x are formed under the semi-recessed holding box portion 21ay which is a rear half of the holding box recess 21ax, and a semi-recessed runner portion 93y which is a rear half of the runner 93 in a recessed state.

[0088] On the front surface of the fixed mold 5, a semi-recessed band placement recess portion 31by, which is a rear half of the band placement recess 31bx for placing the second band 31b, is formed in a recessed state to vertically communicate with the side of the semi-recessed support pin portion 21by and the semi-recessed upper-lower extension wall portion 53y (the side opposite to the semi-recessed runner portion 93y). The depth of the semi-recessed band placement recess portion 31by is half the thickness of the second band 31b. Of the left and right end portions of the second band 31b, one end portion to which the member 32 is attached is formed thicker than the other portion in the direction of the thickness of the band. In order to position the thicker portion, a part (positioning portion) 31bz of the semi-recessed band placement recess portion 31by is formed deep.

[0089] On the front surface of the fixed mold 5, first and second reciprocating recesses 7y, 8y for moving the rear halves of the first and second sliders 7, 8 to be reciprocated are formed so as to vertically communicate with each other and also with the semi-recessed holding box portion 21ay. Specifically, the first and second reciprocating recesses 7y, 8y are formed so as to communicate with the side opposite to the semi-recessed tape placement recess portion 31by in the left-right direction of the semi-recessed holding box portion 21ay.

[0090] The first reciprocating recess 7y is formed to communicate with the side opposite to the semi-recessed band placement recess portion 31by with respect to the semi-recessed upper-lower extension wall portion 53y and to communicate with the lower side with respect to the rear body wall recess 55x.

[0091] The second reciprocating recess 8y is formed on an opposite side of the semi-recessed band placement recess portion 31by with respect to the semi-recessed support pin portion 21by at a distance. Specifically, the second reciprocating recess 8y is formed on a side of the wall 21bz opposite the semi-recessed band placement recess portion 31by, between the left and right walls constituting the semi-recessed support pin portion 21by. Furthermore, the second reciprocating recess 8y is formed to communicate with the upper side and the side side (side opposite the semi-recessed upper-lower extension wall portion 53y) with respect to the rear body wall recess 55x in the semi-recessed support box portion 21ay.

[0092] Since the movable mold 6 has a symmetrical shape with the fixed mold 5, the front body wall 54x, a front half of the upper-lower extension wall recess 53x, a front half of the holding pin recess 21bx, a front half of the tape placing recess 31bx, and a front half of the runner 93 are formed on a front surface of the movable mold 6 (surface abutting against the fixed mold 5).

[0093] The first slider 7 includes a first base portion 71 that mainly forms a lower surface of the connecting wall 56 (more precisely, an end portion on the hole of the separable pin 25 side of the lower surfaces of the upper and lower extension walls 53 and the connecting wall 56) on a lower surface side of the holding box 21a, a first slide body portion 72 that projects upward from the band placement recess portion 31by in the left-right direction on an upper surface of the first base portion 71, and a first side surface forming portion 73 that forms a side surface (a side surface on the band groove 61 side) of the connecting wall 56, which is a side surface of the holding box 21a, and that projects upward from the first base portion 71.

[0094] The first slider body portion 72 has a bar shape extending vertically and includes the slider hole convex portion 63x projecting upward from the first base portion 71 to form the slider hole 63, and the opposite band groove side convex portion 25y forming a portion of the separable pin hole convex portion 25x opposite the band groove 61 and projecting upward from the slider hole convex portion 63x. An upper end surface of the opposite band groove side convex portion 25y is a surface abutting against the wall 21bz opposite the band placement recess portion 31by between the left and right walls forming the retaining pin semi-recessed portion 21by.

[0095] The convex portion 25y of the opposite band groove side part includes a first base 25ya connected to the convex portion 63x of the slider hole and extending upward, and a first tip end portion 25yb connected to the first base 25ya and extending upward.

[0096] The first base 25ya is obtained by extending the entire upper end portion of the convex portion 63x of the slide hole upward. Therefore, the cross-sectional shape of the first base 25ya is rod-shaped and has a rectangular cross-section substantially corresponding to the cross-sectional shape of the convex portion 63x of the slide hole.

[0097] The first tip end portion 25yb has a rod shape with a rectangular cross section and extends upward from a portion of an upper end portion of the first base 25ya on the second band 31b side (band placement recess 31bx side for placing the second band 31b) instead of the entire upper end portion of the first base 25ya. Therefore, the thickness of the first tip end portion 25yb in the front-to-back direction is equal to the thickness of the first base 25ya in the front-to-back direction, but the width of the first tip end portion 25yb in the left-to-right direction is smaller than the width of the first base 25ya in the left-to-right direction.Therefore, the convex portion 25y of the opposite band groove side part is formed in the shape of a stepped bar by the first base 25ya having the larger width in the left-right direction and the first tip end portion 25yb having the smaller width in the left-right direction.

[0098] Further, the first band side 31a (runner side 93) of the upper end portion of the first base 25ya has a first recess 26x recessed in a concave shape toward a rear surface side, and the first recess 26x forms the front-side convex portion 26 together with a second recess 26y which will be described later.

[0099] The first recess 26x has a shape corresponding to a lower half portion of the front-side convex portion 26 to form the lower half portion of the front-side convex portion 26. That is, a bottom surface of the first recess 26x includes a lower inclined surface forming portion 26bx that forms the lower inclined surface 26b of the front-side convex portion 26 and is inclined from a lower end portion of the first recess 26x toward the back toward the top side to increase a depth of the first recess 26x in the front-back direction, and a parallel surface lower half portion forming portion 26cxa that forms a lower half portion of the parallel surface 26c of the front-side convex portion 26 and is parallel to the up-down direction and the width direction.An upper end edge 28x of the parallel surface lower half portion forming portion 26cxa is an upwardly tapered surface toward the second band 31b side (band placement recess 31bx side for placing the second band 31b), and the tapered surface becomes an abutting surface with a tapered surface of a lower end edge 28y of a parallel surface upper half portion forming portion 26cxb, which will be described later.

[0100] The second slider 8 includes a second base portion 81 located on an upper surface side of the retaining box 21a and forming the side of the band groove 61 with respect to the upper and lower extension walls 53, the groove-side convex portion 25z forming the side of the band groove 61 to the left and right of the convex portion 25x of the separable pin hole, the band groove convex portion 61x, and a second side surface forming portion 83 forming a side surface of the groove wall 57 of the side surfaces of the retaining box 21a. A second slider body portion 82 is formed by the groove-side convex portion 25z and the convex portion of the band groove 61x.The convex portion 25z of the groove side part, the convex portion of the band groove 61x, and the second side surface forming portion 83 protrude downward from a lower surface of the second base portion 81 in the left-right direction in order from the retaining pin recess 21bx side to the opposite side (the runner 93 side). The lower end surfaces of the convex portion 25z of the groove side part, the convex portion of the band groove 61x, and the second side surface forming portion 83 are flush with each other in the left-right direction.

[0101] The groove side part convex portion 25z includes the second base 25za extending downward from a lower surface of the second base portion 81, and a second tip end portion 25zb connected to the second base 25za and extending downward.

[0102] The second base 25za has a rod shape with a rectangular cross section. The second tip end portion 25zb has a rod shape with a rectangular cross section and extends downward from a portion of a lower end portion of the second base 25za on the first band 31a side (runner 93 side) instead of the entire lower end portion of the second base 25za. Therefore, the thickness of the second tip end portion 25zb in the front-to-back direction is equal to the thickness of the second base 25za in the front-to-back direction, but the width of the second tip end portion 25zb in the left-to-right direction is smaller than the width of the second base 25za in the left-to-right direction.Thus, the convex portion 25z of the groove side part is formed by the second base 25za having the larger width in the left-right direction and the second tip end portion 25zb having the smaller width in the left-right direction in the shape of a stepped bar.

[0103] Further, on the second band 31b side (band placement recess 31bx side for placing the second band 31b) of the lower end portion of the second base 25za, the second recess 26y having a recessed shape toward the rear surface side and constituting the front-side convex portion 26 together with the above-described first recess 26x is recessed.

[0104] The second recess 26y has a shape corresponding to an upper half portion of the front-side convex portion 26 to form the upper half portion of the front-side convex portion 26. That is, a bottom surface of the second recess 26y includes an upper inclined surface forming portion 26ax that forms the upper inclined surface 26a of the front-side convex portion 26 and is inclined from an upper end portion of the first recess 26x toward the back toward the lower side to increase a depth of the second recess 26y in the front-back direction, and a parallel surface upper half portion forming portion 26cxb that forms an upper half portion of the parallel surface 26c of the front-side convex portion 26 and is parallel to the up-down direction and the width direction.The lower end edge 28y of the parallel surface upper half portion forming portion 26cxb is a downwardly tapered surface toward the first band 31a side (the side opposite to the band placement recess 31bx for placing the second band 31b), and the tapered surface becomes an abutting surface with a tapered surface of the upper end edge 28x of the parallel surface lower half portion forming portion 26cxa.

[0105] As in Fig. 17, in the mold-fitting state, a side surface of the convex portion 25z of the groove side part on the second band 31b side (band placement recess 31bx side) and a side surface of the convex portion 25y of the opposite band groove side part on the first band 31a side (runner 93 side) are in surface contact with each other, so that the convex portion 25z of the groove side part and the convex portion 25y of the opposite band groove side part form the convex portion 25x of the separable pin hole to form the separable pin hole 25.

[0106] Furthermore, in the case of (a) and (b) of Fig. 17, the lower end edge 28y of the parallel surface upper half portion forming portion 26cxb and the tapered surface of the upper end edge 28x of the parallel surface lower half portion forming portion 26cxa are in surface contact with each other, so that the first recess 26x of the convex portion 25y of the opposite band groove side part and the second recess 26y of the convex portion 25z of the groove side part abut each other in the up-down direction, and the front side convex portion forming portion 26z for forming the front side convex portion 26 is formed.

[0107] Since the front side convex portion forming portion 26z including the first recess 26x and the second recess 26y has a shape corresponding to the front side convex portion 26, the inclination of the upper inclined surface forming portion 26ax of the second recess 26y is larger than the inclination of the lower inclined surface forming portion 26bx of the first recess 26x, so that it corresponds to the inclination of the upper inclined surface 26a of the front side convex portion 26, which is larger than the inclination of the lower inclined surface 26b.

[0108] In Fig. 15 to (b) of Fig. 17, only the front sides of the first slider 7 and the second slider 8 are illustrated, so only the first recess 26x and the second recess 26y of the front convex portion forming portion 26z, which forms the front convex portion 26, have been described. However, the first slider 7 and the second slider 8 have a symmetrical shape from front to back, and a rear convex portion forming portion, which forms the rear convex portion, is provided on a back side of the first slider 7 and the second slider 8.The rear convex portion forming portion includes a recess (not shown) provided on a rear surface of the convex portion 25y of the opposite band groove side part symmetrically to the first recess 26x, and a recess (not shown) provided on a rear surface of the convex portion 25z of the groove side part symmetrically to the second recess 26y. At the time of the molding state, two recesses (not shown) abut each other in the up-down direction, and a rear convex portion forming portion is formed to form the rear convex portion 27. The detailed structure of the rear convex portion will not be described because the above description of the front convex portion forming portion 26z is applicable.

[0109] By the convex portion 25z of the groove side part, the convex portion of the band groove 61x, and the second side surface forming portion 83, space portions corresponding to a shape of the groove wall 57 are formed on the front and rear surfaces of the convex portion of the band groove 61x. Therefore, the convex portion 61x of the band groove is formed to be stepped in the front-to-rear direction with respect to the convex portion 25z of the groove side part and the second side surface forming portion 83. In other words, the convex portion 61x of the band groove is located in a central portion of the entire width of the front and rear surfaces of both the convex portion 25z of the groove side part and the second side surface forming portion 83.

[0110] As in Fig. 15 and (a) to (c) of Fig. As shown in Fig. 16, the inlet 92 is formed on a surface adjacent to the first and second side surface forming portions 73, 83. The inlet 92 extends in the left-right direction, and an inlet portion and an outlet portion of the molten resin in the inlet 92 are formed in different shapes (in the shown example, a shape of the inlet portion is circular, and a shape of the outlet portion is rectangular). In addition, the inlet portion of the molten resin in the inlet 92 is formed with an inlet recess 92x of the recess corresponding to half the shape of the inlet portion in the first and second side surface forming portions 73, 83, and the outlet portion of the molten resin in the inlet 92 is formed with an outlet recess 92y of the recess only in the first side surface forming portion 73 and also with a plane 92z (see (a) to (c) of Fig. 16 and (a) and (b) of Fig. 17) which closes the outlet recess 92y in the second side surface forming portion 83.

[0111] In a state where the conditions in (a) and (b) of Fig. 17, when the movable mold 6 abuts against the fixed mold 5, the first slider body portion 72 of the first slider 7 in a state of being moved forward to the upper side abuts against the fixed mold 5, and the second slider 8 in a state of being moved forward to the lower side abuts against the first slider 7. When the first and second sliders 7, 8 abut each other, a connecting wall space 56s corresponding to the shape of the connecting wall 56 is formed by the first slider 7 (the convex portion 63x of the slider hole of the first slider body portion 72, the first base portion 71 and the first side surface forming portion 73) and the second slider 8 (lower end surfaces of the convex portion 25z of the groove side part of the convex portion of the hole of the separable pin 25x and the convex portion 61x of the band groove of the second slider 8).The connecting wall space 56s is a space portion corresponding to the shapes of the groove closing portion 56a and the hole closing portion 56b of the connecting wall 56, and is a closed space portion corresponding to a shape of a portion of the cavity 91 that closes both a lower side portion of the hole of the separable pin 25 on a side of the band groove 61 and a lower side portion of the band groove 61.

[0112] An embodiment of a method for molding the holder 21 using the injection mold described above will be described. (1) First, the injection mold is located as shown in (a) of Fig. 18, in a mold opening state. As shown in (b) of Fig. 18, a step of placing the second tape 31b on the fixed mold 5 is performed. Specifically, an end portion of the second tape 31b in the left-right direction is positioned on a positioning portion 31bz (see Fig. 15) of the tape placement recess 31bx of the fixed mold 5. As a result, one side in the width direction of the second tape 31b is arranged on the side of the cavity 91, and another side in the width direction is arranged on a side separate from the cavity 91. At this time, in the present embodiment, as shown in Fig. 15 and (a) to (c) of Fig. 16, assume that the first slider 7 is arranged in a state (rearward movement state) in which the first slider 7 is retracted below the rear body wall recess 55x, and the second slider 8 is arranged in a state (rearward movement state) in which the second slider 8 is retracted above the rear body wall recess 55x. (2) Next, as in (c) of Fig. 18, a mold clamping step is performed. Specifically, the movable mold 6 is moved forward in the front-back direction with respect to the fixed mold 5, and the fixed mold 5 and the movable mold 6 are abutted against each other. In accordance with the forward movement, the first and second sliders 7, 8 are moved forward in the up-down direction (the first slider 7 is moved forward to the top side and the second slider 8 is moved forward to the bottom side) to be clamped from a Fig. 15 and (a) to (c) of Fig. 16 shown state into one in (a) and (b) of Fig. 17, a lower end surface of the upper-lower extension wall recess 53x of the holding pin recess 21bx of the fixed mold 5 abuts against an upper end surface of the holding pin recess 21bx of the first slider 7, and a lower end surface of the second side surface forming portion 83 of the second slider 8 abuts against an upper end surface of the first side surface forming portion 73 of the first slider 7. Accordingly, when the cavity 91, the inlet 92, and the runner 93 are formed, the cavity 91, the inlet 92, and the runner 93 are connected to each other so that the molten resin passes through them. At this time, the convex portion of the opposite band groove side part 25y of the first slider 7 and the convex portion 25z of the second slider 8 lying on the groove are in surface contact with each other in the left-right direction, and the convex portion 25x of the hole of the separable pin is formed.As above with reference to (a) and (b) of . Fig. 17, the lower end edge 28y of the parallel surface upper half portion forming portion 26cxb and the tapered surface of the upper end edge 28x of the parallel surface lower half portion forming portion 26cxa come into surface contact with each other, so that the first recess 26x of the convex portion 25y of the opposite band groove side part and the second recess 26y of the convex portion 25z of the groove side part abut each other in the up-down direction, and the front side convex portion forming portion 26z for forming the front side convex portion 26 is formed. Similarly, although not shown, a back side convex portion forming portion is formed, which forms the back side convex portion 27.

[0113] The first and second sliders 7, 8 are reciprocated, for example, by using a structure comprising an angle-shaped pin projecting from one of the fixed mold 5 and the movable mold 6 toward another mold, and a guide hole formed in the other mold for guiding the angle-shaped pin, or by driving a dedicated motor. When the first and second sliders 7, 8 are reciprocated by a dedicated motor, the dedicated motor does not necessarily need to be driven at the same time as the mold clamping step, but can be driven before or after the mold clamping step.

[0114] (3) Next, as in (c) of Fig. 18, an injection step for injecting a molten resin is performed. The molten resin is injected into the cavity 91 through the runner 93 and the inlet 92. Then, the molten resin enters the connecting wall space 56s (closed space portion) from the inlet 92 and immediately collides with the first slider 7 (more precisely, with the convex portion 63x of the slide hole of the first slider body portion 72). It is assumed that the colliding molten resin is forced to change its path and form the front body wall 54 and the rear body wall 55. Then, as shown in (d) of Fig. 18, the cavity 91 is filled with the molten resin. A collision surface of the convex portion 63x of the slide hole is a surface orthogonal to the left-right direction in the example shown.

[0115] (4) When a predetermined time has elapsed after the injection, the resin is cooled to such an extent that a shape of the resin can be sufficiently maintained, and therefore, a mold opening step is carried out as in (e) of Fig. 18. Specifically, the movable mold 6 is moved backward. When an angle-shaped pin is used, the first and second sliders 7, 8 are moved backward simultaneously with the backward movement of the movable mold 6, or when no angle-shaped pin is used, a special motor is driven to move the first and second sliders 7, 8 up or down simultaneously with the backward movement of the movable mold 6.

[0116] (5) Thereafter, as in (f) of Fig. 18 and (g) of Fig. 18, a sprue resin portion 93r filled into the runner 93 and an inlet resin portion 92r filled into the gate 92 are separated from the holder 21 to be a product, and the holder 21 to be a product is detached and collected from the fixed mold 5 by the ejector pin.

[0117] In the holder 21 manufactured by such a method, as described above, the inclination of the upper inclined surfaces 26a, 27a, which are brought into contact with the separable pin when the separable pin 11 is inserted into the separable pin hole 25, is set relatively steep, and the inclination of the lower inclined surfaces 26b, 27b, which are brought into contact with the separable pin when the separable pin 11 is removed from the separable pin hole 25, is set relatively low. Therefore, the force Fin required to insert the separable pin 11 into the hole of the separable pin 25 is set larger than the force Fout required to remove the separable pin 11 from the hole of the separable pin 25. A method for measuring the forces Fin and Fout will be described below. [Method for measuring the force required to insert the separable pin into the hole of the separable pin]

[0118] The force Fin required to insert the separable pin 11 into the separable pin hole 25, that is, the force Fin required for the separable pin 11 to ride over and engage with the convex portions 26, 27, was measured by the following method.

[0119] After releasing the combination of the zippers 100 according to the first and second embodiments to form a pair of first and second zipper tapes 30A, 30B, the separable pin 11 was inserted into the hole of the separable pin 25 of the holder 21, and the insertion strength (insertion resistance) at that time was measured. In measuring the insertion strength, the first tape 31a provided with the separable pin 11 and the second tape 31b provided with the holder 21 were each clamped using a tensile tester manufactured by INSTRON, and the strength (insertion resistance) obtained when at least one of the first tape 31a and the second tape 31b is pulled so that the separable pin 11 is inserted into the hole of the separable pin 25 of the holder 21 was measured.At this time, the slider 40 is arranged in the lowest position in which the slider 40 abuts against the holding box 21a in advance, so that the separable pin 11 can be inserted into the hole of the separable pin 25 via the slider 40 when at least one of the first band 31a and the second band 31b is pulled.

[0120] Fig. Figure 19 is a graph showing an example of a relationship between an insertion distance (horizontal axis) of the separable pin 11 into the hole of the separable pin 25 and the insertion resistance (vertical axis). Although there may be multiple peaks of the insertion resistance, the first peak generated after the start of insertion is assumed to be the peak of the insertion resistance. This is because the first peak indicates a peak generated when the separable pin 11 passes over the convex portions 26, 27.

[0121] The reason why the insertion resistance decreases after exceeding the first peak is that the separable pin 11 passes over the convex portions 26, 27, and the recesses 16, 17 of the separable pin 11 engage with the convex portions 26, 27 of the hole of the separable pin 25. Although the second peak can be obtained after the first peak, this second peak is generated when the lower end portion of the separable pin 11 abuts against the hole-closing portion 56b or the like of the connecting wall 56 in a case where insertion continues after the recesses 16, 17 of the separable pin 11 engage with the convex portions 26, 27 of the hole of the separable pin 25, and thus the second peak is not assumed to be the peak of the insertion resistance.

[0122] The peak value in the Fig. 19 was 4.14 N, which is within the above-described preferable range of 4 N to 6 N. When the peak value is within the range of 4 N to 6 N, the force for inserting the separable pin 11 into the hole of the separable pin 25 is appropriate. Therefore, the user can get an insertion feeling or a clicking feeling that the separable pin 11 is inserted into the hole of the separable pin 25, and can appropriately recognize that the separable pin 11 is fully inserted into the holder 21 due to the resistance feeling and a sound when the separable pin 11 rides over the convex portions 26, 27.

[0123] On the other hand, if the peak value exceeds 6 N, the insertion resistance is too large, and the user must exert a large force to insert the separable pin 11 into the hole of the separable pin 25, which is undesirable. Furthermore, the user may misunderstand that the separable pin 11 has reached the bottom of the hole of the separable pin 25 and the insertion is completed when the separable pin 11 hits the convex portions 26, 27 before the separable pin 11 passes over the convex portions 26, 27.

[0124] However, if the peak value is less than 4 N, the insertion resistance is too low and the user cannot obtain an appropriate insertion or clicking feeling. [Method for measuring the force required to remove the separable pin from the separable pin hole]

[0125] The force Fout required to remove the separable pin 11 from the hole of the separable pin 25, that is, the force Fout required for the separable pin 11 to ride over the convex portions 26, 27 and release the engagement, was measured by the following method.

[0126] The separable pin 11 was removed from the hole of the separable pin 25 of the holder 21 in a state where the pair of first and second fastener tapes 30A, 30B were joined together, and the peeling strength (peel-off resistance) at that time was measured. In the peeling strength measurement, the first tape 31a provided with the separable pin 11 and a pull 42 of the slider 40 were each clamped using a tensile tester manufactured by INSTRON, and the strength (peel-off resistance) obtained when at least one of the first tape 31a and the pull 42 of the slider 40 was pulled so that the separable pin 11 was removed from the hole of the separable pin 25 of the holder 21 was measured.At this time, the slider 40 is arranged in the lowest position in which the slider 40 abuts against the holding box 21a in advance, so that the separable pin 11 can be removed from the hole of the separable pin 25 via the slider 40 when at least one of the first band 31a and the pull 42 of the slider 40 is pulled.

[0127] Fig. Figure 20 is a graph showing an example of a relationship between a withdrawal distance (horizontal axis) of the separable pin 11 from the hole of the separable pin 25 and a withdrawal resistance (vertical axis). A peak value of the withdrawal resistance in the graph is assumed to be the force Fout required to remove the separable pin 11 from the hole of the separable pin 25.

[0128] Furthermore, the present invention is not limited to the above embodiments and can be appropriately modified, improved, and the like within the practical scope.

[0129] As described above, the following points are disclosed in this specification. [1] A zipper (100) comprising: a pair of first and second zipper tapes (30A, 30B); at least one slider (40) arranged to open and close a space between the first and second zipper tapes (30A, 30B); and a separating insert (1) provided on a lower end portion of the first and second zipper tapes (30A, 30B) in a longitudinal direction, wherein the separating insert (1) comprises: a first separating insert portion (10) provided on the first zipper tape (30A), and a second separating insert portion (20) provided on the second fastening element bands (30B) and adapted to be coupled to and uncoupled from the first separating insert portion (10), the first separating insert portion (10) comprises a separable pin (11) provided on a widthwise inner edge side of the first zipper tape (30A), the second separating insert section (2) comprises a holder (21) provided on a widthwise inner edge side of the second zipper tape (30B), the holder (21) comprises a hole of the separable pin (25) which opens towards a top side and into or from which the separable pin (11) can be inserted or removed in the longitudinal direction, at least one of a front surface (11b) and a rear surface (11c) of the separable pin (11) is provided with a recess (16, 17), among the inner surfaces (25a, 25b, 25c, 25d) forming the hole of the separable pin (25) of the holder (21), at least one of a front side surface (25a) and a rear side surface (25b) facing the front surface (11b) and the rear surface (11c) of the separable pin (11) is provided with a convex portion (26, 27) engageable with the recess (16, 17), the convex portion (26, 27) comprises an asymmetrical shape with respect to a plane (P) passing through a central portion of the convex portion (26, 27) in an insertion or removal direction of the separable pin (11) and perpendicular to the insertion or removal direction, the convex portion (26, 27) comprises an upper inclined surface (26a, 27a) which increases a thickness of the convex portion (26, 27) downward from an upper end portion of the convex portion (26, 27) in the insertion or removal direction of the separable pin (11), and a lower inclined surface (26b, 27b) which increases the thickness of the convex portion (26, 27) upward from a lower end portion of the convex portion (26, 27) in the insertion or removal direction of the separable pin (11), and an inclination of the upper inclined surface (26a, 27a) is greater than an inclination of the lower inclined surface (26b, 27b).

[0130] According to this configuration, a relatively large force is required to fully insert the separable pin (11) into the hole of the separable pin (25), so that the user receives an insertion feeling or a click feeling and can adequately recognize that the separable pin (11) is fully inserted into the holder (21) due to a resistance feeling and a sound when the separable pin (11) passes over the convex portions (26, 27).

[0131] [2] The zipper according to [1], in which a force (Fin) required to insert the separable pin (11) into the hole of the separable pin (25) is greater than a force (Fout) required to remove the separable pin (11) from the hole of the separable pin (25).

[0132] According to this configuration, a relatively large force is required to fully insert the separable pin (11) into the hole of the separable pin (25), so that the user obtains an insertion feeling or a clicking feeling and can appropriately recognize that the separable pin (11) is fully inserted into the holder (21) from a resistance feeling and a sound when the separable pin (11) passes over the convex portions (26, 27).

[0133] [3] The zipper according to [1] or [2], where a force required to insert the separable pin (11) into the hole of the separable pin (25) is 4 N to 6 N.

[0134] According to this configuration, a relatively large force is required to fully insert the separable pin (11) into the hole of the separable pin (25), so that the user obtains an insertion feeling or a clicking feeling and can appropriately recognize that the separable pin (11) is fully inserted into the holder (21) from a resistance feeling and a sound when the separable pin (11) passes over the convex portions (26, 27).

[0135] [4] The zipper according to one of [1] to [3], in which the recesses (16, 17) are provided on the front surface (11b) and the rear surface (11c) of the separable pin (11), and the convex portions (26, 27) are provided respectively on the front side surface (25a) and the rear side surface (25b) of the hole of the separable pin (25) of the holder (21).

[0136] According to this configuration, the force Fin required to engage the convex portions (26, 27) with the recesses (16, 17) increases, and the user can more reliably obtain an insertion feeling or a click feeling and more appropriately recognize that the separable pin (11) is fully inserted into the holder (21).

[0137] [5] The zipper according to one of [1] to [4], in which the convex portion (26, 27) comprises a parallel surface (26c, 27c) connecting the upper inclined surface (26a, 27a) and the lower inclined surface (26b, 27b) and which is parallel to the insertion or withdrawal direction and the width direction.

[0138] Since the convex portions (26, 27) include the parallel surfaces (26c, 27c) connecting the upper inclined surfaces (26a, 27a) and the lower inclined surfaces (26b, 27b) and extending parallel to the insertion or withdrawal direction (up-down direction) and the width direction (left-right direction) of the separable pin (11), the convex portions (26, 27) and the recesses (16, 17) can be engaged with little rattling.

[0139] [6] The zipper according to one of [1] to [5], in which the recess (16, 17) penetrates the separable pin (11) in the width direction.

[0140] According to this configuration, even if the dust enters the recesses (16, 17), such as human dirt or clothing fibers, it can be easily discharged from the recesses (16, 17) in the width direction.

[0141] [7] The zipper according to one of [1] to [6], in which a length (M1) of the recess (16, 17) in the width direction is greater than a length (M2) of the convex portion (26, 27) in the width direction.

[0142] With this configuration, the convex portions (26, 27) can be easily fitted into the recesses (16, 17). For example, the separable pin (11) can be inserted while being inclined in the width direction (left-right direction) with respect to the hole of the separable pin (25). In this case, too, the recesses (16, 17) of the separable pin are firmly connected to the convex portions (26, 27) of the hole of the separable pin (25). Even when the convex portions (26, 27) come into contact with the recesses (16, 17) after engagement, the convex portions (26, 27) are elastically deformed in the width direction in the recesses (16, 17), so that local stresses can be prevented from generating in the convex portions (26, 27).

[0143] [8] The zipper according to one of [1] to [7], in which when the recess (16, 17) and the convex portion (26, 27) are engaged with each other, a gap between the recess (16, 17) and the convex portion (26, 27) in the width direction is larger than a gap between the recess (16, 17) and the convex portion (26, 27) in the insertion or removal direction.

[0144] With this configuration, when the recesses (16, 17) and the convex portions (26, 27) are engaged with each other, an insertion feeling can be achieved, and the convex portions (26, 27) can be easily fitted into the recesses (16, 17).

[0145] [9] A zipper (100) with: a pair of first and second zipper tapes (30A, 30B) at least one slider (40) arranged to open and close a space between the first and second zipper tapes (30A, 30B); and a separating insert (1) provided on a lower end portion of the first and second zipper tapes (30A, 30B) in a longitudinal direction, wherein the separating insert (1) comprises: a first separating insert portion (10) provided on the first zipper tape (30A), and a second separating insert portion (20) provided on the second zipper tape (30B) and adapted to be coupled to and uncoupled from the first separating insert portion (10), the first separating insert portion (10) comprises a separable pin (11) provided on a widthwise inner edge side of the first zipper tape (30A), the second separating insert section (2) comprises a holder (21) provided on a widthwise inner edge side of the second zipper tape (30B), the holder (21) comprises a hole of the separable pin (25) which opens towards a top side and into or from which the separable pin (11) can be inserted or removed in the longitudinal direction, at least one of a front surface (11b) and a rear surface (11c) of the separable pin (11) is provided with a recess (16, 17), among the inner surfaces (25a, 25b, 25c, 25d) forming the hole of the separable pin (25) of the holder (21), at least one of a front side surface (25a) and a rear side surface (25b) facing the front surface (11b) and the rear surface (11c) of the separable pin (11) is provided with a convex portion (26, 27) engageable with the recess (16, 17), and a force (Fin) required to insert the separable pin into the hole of the separable pin (25) of the holder is greater than a force (Fout) required to remove the separable pin from the hole of the separable pin (25) of the holder.

[0146] According to this configuration, a relatively large force is required to fully insert the separable pin (11) into the hole of the separable pin (25), so that the user obtains an insertion feeling or a clicking feeling and can appropriately recognize that the separable pin (11) is fully inserted into the holder (21) from a resistance feeling and a sound when the separable pin (11) passes over the convex portions (26, 27).

[0147]

[10] Method for producing a holder (21) of a zipper separating insert (1), in which the holder (21) is provided with a convex portion (26, 27) on an inner surface (25a, 25b) of a hole of the separable pin (25) into and from which a separable pin (11) can be inserted and removed, the holder (21) is obtained by injection molding using a fixed mold (5), a movable mold (6) adapted to reciprocate in a front-back direction with respect to the fixed mold (5), and a first and a second slider (7, 8) adapted to reciprocate in an up-down direction with respect to the fixed mold (5), and a convex portion forming portion (26z) for forming the convex portion (26, 27) is formed by abutting a first recess (26x) formed in the first slider (7) against a second recess (26y) formed in the second slider (8).

[0148] According to this configuration, the convex portions (26, 27) can be provided on the inner surfaces (25a, 25b) of the hole of the separable pin (25) of the holder (21) by injection molding. REFERENCE SYMBOL LIST 1 divider insert 5 solid form 6 movable form 7 first slider 7y first reciprocating recess 8 second slider 8y second reciprocating recess 10 first separating insert section 11 detachable pin 11a lead 11b front surface 11c rear surface 11d lower surface 11e Locking groove section 12 first reinforcement strip section 13 first coupling section 13a front surface 13b rear surface 14th level 15 thin guide section 16 front recess (recess) 16a left opening 16b right opening 16c parallel surface 16d upper inclined surface 16e lower inclined surface 17 rear recess (recess) 17a left opening 17b right opening 17c parallel surface 17d upper inclined surface 17e lower inclined surface 18a upper section of the anterior surface 18b lower section of the anterior surface 18c parallel surface 18d first inclined surface 18e second inclined plane 19a upper section of the posterior surface 19b lower section of the posterior surface 19c parallel surface 19d inclined surface 20 second separating insert section 21 holders 21a Holding box 21ax retaining box recess 21b Retaining pin 21bx retaining pin recess 21by semi-recessed retaining pin section 21bz Wall 21c recess 21d locking section 22 second reinforcement strip section 23 second coupling section 24 thin guide section 25 Hole of the separable pin 25a front side surface (inner surface) 25b rear side surface (inner surface) 25c right side surface (inner surface) 25d left side surface (inner surface) 25x convex section of the hole of the separable pin 25y convex section of the opposite band groove side part 25ya first base 25yb top end section 25z convex section of the groove side part 26 front convex section (convex section) 26a upper inclined surface 26ax upper inclined surface forming section 26b lower inclined surface 26bx lower inclined surface forming section 26c parallel surface 26cxa parallel surface-lower-half-section-forming-section 26cxb parallel surface-upper-half-section-forming-section 26x first recess 26y second recess 26z convex section of the front side forming section (convex section forming section) 27 rear convex section (convex section) 27a upper inclined surface 27b lower inclined surface 27c parallel surface 28x upper end edge 28y lower end edge 30A first zipper tape 30B second zipper tape 31a first volume 31b second volume 31bx Tape placement recess 31by tape placement recess section 31bz positioning section 31c Band reinforcement section 32 elements 33 upper stopper 40 sliders 41 slide body 42 train 43 upper sheet 43a raised section 44 lower sheet 44a raised section 46 train stopping section 53 upper-lower extension wall 53x upper-lower extension wall recess 53y semi-recessed upper-lower extension wall section 54 Front body wall 54x front body wall recess 55 Rear body wall 55x rear body wall recess 56 connecting wall 56a Slot closure section 56b Hole closure section 56s connecting wall space 56x connecting wall recess 57 groove wall 57x groove wall recess 61 band groove 61x convex section of the band groove 63 slide hole 63x convex section of the slide hole 71 first base section 72 first slide body section 73 first side surface formation section 81 second base section 82 second slide body section 83 second side surface formation section 91 Cavity 92 Inlet 92r inlet resin section 92x inlet recess 92y outlet recess 92z level 93 sprue 93r sprue resin section 93y semi-recessed runner section 100 zippers QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] JPH07-3925Y

[0005]

Claims

[1] Zipper (100), comprising a pair of first and second zipper tapes (30A, 30B); at least one slider (40) arranged to open and close a space between the first and second zipper tapes (30A, 30B); and a separating insert (1) provided at a lower end portion of the first and second zipper tapes (30A, 30B) in a longitudinal direction, wherein the separating insert (1) comprises: a first separating insert portion (10) provided on the first zipper tape (30A), and a second separating insert portion (20) provided on the second zipper tape (30B) and adapted to be coupled to and uncoupled from the first separating insert portion (10), wherein the first separating insert portion (10) comprises a separable pin (11) provided on a widthwise inner edge side of the first fastener tape (30A), and the second separating insert portion (20) comprises a holder (21) provided on a widthwise inner edge side of the second zipper tape (30B), wherein the holder (21) comprises a hole of the separable pin (25) which opens towards a top side and into or from which the separable pin (11) can be inserted or removed in the longitudinal direction, at least one of a front surface (11b) and a rear surface (11c) of the separable pin (11) is provided with a recess (16, 17), among inner surfaces (25a, 25b, 25c, 25d) forming the hole of the separable pin (25) of the holder (21), at least one of a front side surface (25a) and a rear side surface (25b) facing the front surface (11b) and the rear surface (11c) of the separable pin (11) is provided with a convex portion (26, 27) engageable with the recess (16, 17), wherein the convex portion (26, 27) comprises an asymmetrical shape with respect to a plane (P) passing through a central portion of the convex portion (26, 27) in an insertion or removal direction of the separable pin (11) and perpendicular to the insertion or removal direction, the convex portion (26, 27) comprises an upper inclined surface (26a, 27a) which increases a thickness of the convex portion (26, 27) downward from an upper end portion of the convex portion (26, 27) in the insertion or removal direction of the separable pin (11), and a lower inclined surface (26b, 27b) which increases the thickness of the convex portion (26, 27) upward from a lower end portion of the convex portion (26, 27) in the insertion or removal direction of the separable pin (11), and wherein an inclination of the upper inclined surface (26a, 27a) is greater than an inclination of the lower inclined surface (26b, 27b). [2] A slide fastener according to claim 1, wherein a force (Fin) required to insert the separable pin (11) into the hole of the separable pin (25) is greater than a force (Fout) required to remove the separable pin (11) from the hole of the separable pin (25). [3] A slide fastener according to claim 1 or 2, wherein a force required to insert the separable pin (11) into the hole of the separable pin (25) is 4 N to 6 N. [4] Zipper according to one of claims 1 to 3, wherein the recesses (16, 17) are provided on the front surface (11b) and the rear surface (11c) of the separable pin (11), and the convex portions (26, 27) are provided respectively on the front side surface (25a) and the rear side surface (25b) of the hole of the separable pin (25) of the holder (21). [5] A slide fastener according to any one of claims 1 to 4, wherein the convex portion (26, 27) includes a parallel surface (26c, 27c) connecting the upper inclined surface (26a, 27a) and the lower inclined surface (26b, 27b) and which is parallel to the insertion or removal direction and the width direction. [6] A slide fastener according to any one of claims 1 to 5, wherein the recess (16, 17) penetrates the separable pin (11) in the width direction. [7] A slide fastener according to any one of claims 1 to 6, wherein a length (M1) of the recess (16, 17) in the width direction is greater than a length (M2) of the convex portion (26, 27) in the width direction. [8] A slide fastener according to any one of claims 1 to 7, wherein when the recess (16, 17) and the convex portion (26, 27) are engaged with each other, a gap between the recess (16, 17) and the convex portion (26, 27) in the width direction is larger than a gap between the recess (16, 17) and the convex portion (26, 27) in the insertion or removal direction. [9] Zipper (100), comprising a pair of first and second zipper tapes (30A, 30B); at least one slider (40) arranged to open and close a space between the first and second zipper tapes (30A, 30B); and a separating insert (1) provided at a lower end portion of the first and second zipper tapes (30A, 30B) in a longitudinal direction, wherein the separating insert (1) comprises: a first separating insert portion (10) provided on the first zipper tape (30A), and a second separating insert portion (20) provided on the second zipper tape (30B) and adapted to be coupled to and uncoupled from the first separating insert portion (10), wherein the first separating insert portion (10) comprises a separable pin (11) provided on a widthwise inner edge side of the first zipper tape (30A), the second separating insert section (2) comprises a holder (21) provided on a widthwise inner edge side of the second zipper tape (30B), the holder (21) comprises a hole of the separable pin (25) which opens towards a top side and into or from which the separable pin (11) can be inserted or removed in the longitudinal direction, at least one of a front surface (11b) and a rear surface (11c) of the separable pin (11) is provided with a recess (16, 17), among inner surfaces (25a, 25b, 25c, 25d) forming the hole of the separable pin (25) of the holder (21), at least one of a front side surface (25a) and a rear side surface (25b) facing the front surface (11b) and the rear surface (11c) of the separable pin (11) is provided with a convex portion (26, 27) engageable with the recess (16, 17), and a force (Fin) required to insert the separable pin into the hole of the separable pin (25) of the holder is greater than a force (Fout) required to remove the separable pin from the hole of the separable pin (25) of the holder. [10] Method for producing a holder (21) of a zipper separating insert (1), wherein the holder (21) is provided with a convex portion (26, 27) on an inner surface (25a, 25b) of a hole of the separable pin (25) into and from which a separable pin (11) can be inserted and removed, wherein the holder (21) is manufactured by injection molding using a fixed mold (5), a movable mold (6) adapted to reciprocate in a front-back direction with respect to the fixed mold (5), and a first and a second slider (7, 8) adapted to reciprocate in an up-down direction with respect to the fixed mold (5), and a convex portion forming portion (26z) for forming the convex portion (26, 27) is formed by abutting a first recess (26x) formed in the first slider (7) against a second recess (26y) formed in the second slider (8).

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