Slide fastener and method for manufacturing socket of separable insert for slide fastener

Abstract

Provided is a slide fastener in which protrusions (26, 27) capable of engaging with recesses (16, 17) are provided on at least one of a front-side surface (25a) and a back-side surface (25b) that face a front surface (11b) and a back surface (11c) of a plunger (11) among inner surfaces (25a, 25b, 25c, 25d) constituting a plunger hole (25) of a socket (21), the side on which a first fastener stringer (30A) is disposed being a first side (L) in the left-right direction, and the side on which a second fastener stringer (30B) is disposed being a second side (L) in the left-right direction, and the side on which a second fastener stringer (30B) is disposed being a third side (L) in the left-right direction. When the side on which the second fastener stringer (30B) is disposed is defined as a second side (R), the protrusions (26, 27) are inclined toward the first side (L) in the left-right direction as the protrusions (26, 27) face downward (DN), and an inclined surface (29) that is inclined toward the first side (L) in the left-right direction as the protrusions (26, 27) face downward is provided on a side surface (25c) of the second side (R) in the left-right direction among the inner surfaces (25a, 25b, 25c, 25d) constituting the plunger hole (25) of the socket (21).

Description

TECHNICAL FIELD

[0001] The present application relates to a slide fastener and a manufacturing method of a socket of a separation fitting member for the slide fastener. BACKGROUND

[0002] A separation fitting member for a slide fastener is generally provided at lower end portions of left and right slide fastener tapes, and has a fitting rod on one side and a socket on the other side. The slide fastener tape is obtained by installing a row of fastener elements at an inner edge portion of the slide fastener tape. In an open state of the left and right slide fastener tapes in which the slider is lowered to the lowermost position abutting against the separation fitting member, the fitting rod is pulled out of the socket, and the fitting rod is pulled up by a fastener element guide path of the slider, so that the left and right slide fastener tapes can be separated. Further, from the separated state, the fitting rod of one slide fastener tape is inserted into the socket by passing through the fastener element guide path of the slider at the lowermost position abutting against the socket in the other slide fastener tape, so that the lower end portions of the left and right slide fastener tapes are aligned. By moving the slider upward from the aligned state, the fastener elements of the left and right slide fastener tapes can be closed.

[0003] In a state in which the fitting rod is not completely inserted into the socket, that is, in a state in which the lower end portions of the left and right slide fastener tapes are not aligned, if the slider is moved upward, improper combination of the left and right slide fastener tapes can occur. In order to prevent such a phenomenon, it is desirable that the user can recognize the case in which the lower end portions of the left and right slide fastener tapes become in the aligned state.

[0004] For example, in Patent Literature 1, a separation fitting member of a slide fastener in which a fitting rod is detachably fitted in a seat body in a substantially parallel state with the seat rod is disclosed. In the separation fitting member of the slide fastener, a recess is provided at a front end portion of one or both of the front and back surfaces of the fitting rod, and a protrusion that protrudes into the recess is provided at an inner surface of a fitting hole of the seat body into which the fitting rod is fitted. Therefore, in a state in which the fitting rod is completely inserted into the socket, the recess of the fitting rod is engaged with the protrusion of the seat body and is held, and since a resistance feeling to pulling out the fitting rod from the seat body is generated, if the user attempts to pull out the fitting rod from the seat body, the user can recognize the case in which the lower end portions of the left and right slide fastener tapes become in the aligned state.

[0005] [Patent Literature]

[0006] [Patent Literature]

[0007] [Patent Literature 1] Japanese Patent No. 7-3925

[0008] Here, the zipper of Patent Document 1 is aimed at easily inserting the plug into the seat even with one hand, and by forming a tapered surface on the protrusion and a slanted cam surface on the plug, the resistance of the plug against the protrusion when the plug is inserted into the engagement hole is reduced, and the plug can be smoothly inserted. Therefore, when the plug is inserted into the seat, it is difficult to generate a sense of resistance or sound, and thus there is a possibility that the user cannot recognize the sense of insertion.

[0009] In addition, as described above, in a state in which the plug is completely inserted into the socket, the zipper teeth of the left and right zipper tapes can be closed by moving the puller upward, but in a state in which the plug is not completely inserted into the socket, if the puller is moved upward, improper combination can occur. In order to prevent such improper combination, the inventors have conceived that, from the viewpoint of improving the startability of the puller, it is preferable that the puller be automatically pulled up and the engagement of the first teeth of the socket side with the plug be started when the plug is completely inserted into the socket. SUMMARY

[0010] The present application was completed in view of the above problems, and aims to provide a zipper in which a user can appropriately recognize the state in which the plug is inserted into the socket, and the startability of the puller is excellent, and a manufacturing method of a socket of a separation insert for the zipper.

[0011] In order to solve the above problems, the present application is achieved by the following structure.

[0012] [1] A zipper comprising:

[0013] a pair of left and right first and second zipper tapes (30A, 30B);

[0014] at least one puller (40) for opening and closing between the first and second zipper tapes (30A, 30B); and

[0015] a separation insert (1) provided at a lower end portion in a longitudinal direction of the first and second zipper tapes (30A, 30B), the zipper being characterized in that

[0016] the separation insert (1) comprises:

[0017] a first separation insertion portion (10) provided to the first zipper tape (30A); and

[0018] a second separation insertion portion (20) provided to the second zipper tape (30B) and capable of being connected and disconnected with the first separation insertion portion (10),

[0019] the first separation insertion portion (10) includes a plug (11) provided to an inner side edge portion side in a width direction of the first zipper tape (30A),

[0020] The second separation fitting part (20) includes a socket (21) provided on the inner side of the second zipper tape (30B) in the width direction,

[0021] The socket (21) has an opening in the upper direction (UP), and a plug rod hole (25) in which the plug rod (11) is inserted and removed in the longitudinal direction,

[0022] A recess (16, 17) is provided on at least one of the front surface (11b) and the back surface (11c) of the plug rod (11),

[0023] At least one of the front side (25a) and the back side (25b) of the inner surface (25a, 25b, 25c, 25d) of the socket (21) that constitutes the plug rod hole (25), which is opposite to the front surface (11b) and the back surface (11c) of the plug rod (11), is provided with a protrusion (26, 27) that can be engaged with the recess (16, 17),

[0024] When one side on which the first zipper tape (30A) is arranged is set as the first side (L) and one side on which the second zipper tape (30B) is arranged is set as the second side (R) in the left-right direction,

[0025] The protrusion (26, 27) is inclined toward the first side (L) in the left-right direction as it goes downward (DN),

[0026] The side surface (25c) of the inner surface (25a, 25b, 25c, 25d) of the socket (21) that constitutes the plug rod hole (25), which is on the second side (R) in the left-right direction, is provided with an inclined surface (29) that is inclined toward the first side (L) in the left-right direction as it goes downward.

[0027] [2] A method of manufacturing a socket (21) of a separation fitting (1) for a zipper, wherein

[0028] In the socket (21), at least one of the front side (25a) and the back side (25b) of the inner surface (25a, 25b) of the plug rod hole (25) in which the plug rod (11) is inserted and removed is provided with a protrusion (26, 27),

[0029] When one side on which the plug rod (11) is arranged is set as the first side (L) and one side on which the socket (21) is arranged is set as the second side (R) in the left-right direction,

[0030] The protrusion (26, 27) is inclined toward the first side (L) in the left-right direction as it goes downward (DN),

[0031] In a side surface (25c) of the socket (21) on the second side in the left-right direction among the inner surfaces (25a, 25b, 25c, 25d) of the socket hole (25) constituting the socket (21), an inclined surface (29) inclined toward the first side (L) in the left-right direction as it goes downward is provided, the socket (21) is obtained by injection molding using a fixed mold (5), a movable mold provided reciprocally movable in a surface-back direction with respect to the fixed mold (5), and first and second sliders (7, 8) provided reciprocally movable in the up-down direction with respect to the fixed mold (5),

[0032] A projection forming portion (26z) for forming the projections (26, 27) is formed by butting a first recess (26x) recessed in the first slider (7) and a second recess (26y) recessed in the second slider (8),

[0033] The first slider (7) has an inclined surface forming portion (29x) for forming the inclined surface (29),

[0034] The first slider (7) is reciprocally movable in a direction inclined with respect to the up-down direction at an inclination angle (a3) identical to an inclination angle (a1) of the inclined surface (29),

[0035] The second slider (8) is reciprocally movable in a direction parallel with respect to the up-down direction.

[0036] According to the present application, a zipper and a manufacturing method of a socket of a separation insert for the zipper in which a user can appropriately recognize that a plug is inserted into the socket and in which startability of a puller is excellent. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a front view of a zipper according to a first embodiment of the present application.

[0038] Figure 2 is a front view showing a connection release state of first and second separation insert portions on an enlarged scale.

[0039] Figure 3 is a side view of a puller shown by a broken line.

[0040] Figure 4 is a perspective view of first and second separation insert portions.

[0041] Figure 5A is a front view of the first separation insert portion viewed from a surface side.

[0042] Figure 5B is a rear view of the first separation insert portion viewed from a back side.

[0043] Figure 5C This is a right-side view of the first separate insert, viewed from the right side in the width direction.

[0044] Figure 6A This is a front view of the second separation insert from the surface side.

[0045] Figure 6B This is a rear view of the second separating insert, viewed from the back side.

[0046] Figure 6C This is a left-side view of the second separate insert, viewed from the left side in the width direction.

[0047] Figure 7 This is a front view of the second separating insert portion as seen from the surface side, and it is... Figure 6C The arrow view of section VII-VII shows the diagram of the socket.

[0048] Figure 8 This is a rear view of the second separating insert, viewed from the back side. Figure 6C The arrow view of section VIII-VIII represents the diagram of the socket.

[0049] Figure 9A It is a diagram showing the state of the plug relative to the plug hole of the socket during insertion, and it is a diagram showing a partial cut-off of the pull head.

[0050] Figure 9B It means and Figure 9A The diagram shows the same state, and is a view of the pull head from the surface.

[0051] Figure 9C It means and Figure 9A A diagram showing the same state, but with the socket partially truncated.

[0052] Figure 10A It is a diagram showing the state in which the plug is fully inserted into the plug hole of the socket, and it is a diagram showing a partial cut-off of the pull head.

[0053] Figure 10B It means and Figure 10A The diagram shows the same state, and is a view of the pull head from the surface.

[0054] Figure 10C It means and Figure 10A The diagram shows the same state, but is a partial cut-off representation of the pull head and socket.

[0055] Figure 11A This diagram shows the state in which the plug is fully inserted into the socket in a comparative example where the plug hole is not provided with an inclined surface, and it is a diagram showing the pull head partially truncated.

[0056] Figure 11B This indicates that in the comparative example where the insertion hole does not have an inclined surface, compared to... Figure 11A The diagram shows the same state, and is a view of the pull head from the surface.

[0057] Figure 12 It is a surface view of the molding die used in the manufacturing method of the socket, and a view of the first and second sliding parts in the mold-open state.

[0058] Figure 13 It is a surface view of the molding die used in the manufacturing method of the socket, and a view of the first and second sliding members in the mold-closed state.

[0059] Figure 14 yes Figure 13 XIV-XIV cross section.

[0060] Figure 15 This is a front view of the first separated insert in the modified example, viewed from the surface side.

[0061] Figure 16 It means Figure 15 The diagram shows the state in which the plug is fully inserted relative to the plug hole of the socket in the modified example shown.

[0062] [Label Explanation]

[0063] 1: Separating insert; 5: Fixing mold; 7: First sliding member; 8: Second sliding member; 10: First separating insert; 11: Insert rod; 11a: Protrusion; 11b: Surface; 11c: Back side; 11d: Left side; 11e: Locking groove; 11f: Right side; 16: Surface recess; 16a: Left opening; 16b: Right opening; 16c: Parallel surface; 16d: Upper inclined surface; 16e: Lower inclined surface; 17: Back recess; 17a: Left opening; 17b: Right opening; 17c: Parallel surface; 17d: Upper inclined surface; 17e: Lower inclined surface; 20: Second separating insert; 21: Socket; 21a: Base; 21ax: Base recess; 21b 21bx: Seat rod; 21d: Locking part; 22: Plane; 22x: Plane forming part; 25: Insertion rod hole; 25a: Front side (inner surface); 25b: Back side (inner surface); 25c: Right side (inner surface); 25d: Left side (inner surface); 25x: Insertion rod hole protrusion; 25y: Second side portion protrusion; 25ya: First base; 25yb: First front end; 25yc: First running surface; 25z: First side portion protrusion; 25zc: Second running surface; 26: Front side protrusion (protrusion); 26a: Upper inclined surface; 26b: Lower inclined surface; 26c: Parallel surface; 26d: Left side; 26e: Right side; 26x: First recess; 26y: Second recess 26z: Front side protrusion forming part (protrusion forming part); 27: Back side protrusion (protrusion); 27a: Upper inclined surface; 27b: Lower inclined surface; 27c: Parallel surface; 27d: Left side surface; 27e: Right side surface; 29: Inclined surface; 29a: Upper plane; 29b: Lower plane; 29c: Central part in vertical direction; 29x: Inclined surface forming part; 30A: First zipper tooth chain; 30B: Second zipper tooth chain; 31a: First chain; 31b: Second chain; 32: Chain tooth; 32A: First chain tooth; 33: Upper stop; 40: Slider head; 41: Slider head body; 42: Slider tab; 43: Front wing plate; 43a: Raised part; 44: Back wing plate; 44a: Raised part; 45: Guide post; 45a: 46: Tapered surface; 47: Pull tab holding part; 53: Chain tooth guide path; 54: Upper and lower extension walls; 55: Front side cylinder wall; 56: Back side cylinder wall; 56: Joint wall; 56a: Groove closing part; 56b: Hole closing part; 56s: Joint wall space part; 57: Groove wall; 61: Grooved; 63: Sliding hole; 63a: Left side wall; 63b: Right side wall; 63x: Sliding hole protrusion; 71: First base part; 71a: First mold abutment surface; 71b: Normal line; 72: First sliding main body part; 73: First side forming part; 73a: First mating surface; 81: Second base part; 81a: Second mold abutment surface; 81b: Normal line; 82: Second sliding main body part; 83: Second side forming part; 83a: Second mating surface;91: Cavity; 92: Gate; 93: Runner; 100: Zipper. Detailed Implementation

[0064] Hereinafter, based on the accompanying drawings, a detailed description will be provided of the zipper and the method for manufacturing the socket of the zipper insert according to various embodiments of the present invention.

[0065] In addition, the "up and down direction" in this instruction manual refers to the sliding direction of the zipper pull, which is the direction of the long side of the zipper or zipper teeth, and the direction of insertion and removal of the push bar into the socket. Specifically, the direction in which the zipper pull slides to engage the left and right zipper teeth is defined as "up," and the direction in which the zipper pull slides to disengage the left and right zipper teeth is defined as "down." In the diagram, UP represents "up," and DN represents "down."

[0066] Additionally, "left-right direction" refers to the direction orthogonal to the sliding direction of the zipper pull in the direction in which a pair of zipper teeth are arranged. In other words, it can be the width direction of the zipper, zipper tooth strip, teeth, insert, and socket. In the diagram, "left" is represented by L and "right" by R. Furthermore, in the left-right direction, the side with the first zipper tooth strip 30A is sometimes referred to as the first side (L), and the side with the second zipper tooth strip 30B is sometimes referred to as the second side (R).

[0067] Furthermore, "face direction" refers to the direction orthogonal to the up-down and left-right directions; in other words, it can be the thickness direction of the zipper or zipper teeth, chain strap, teeth, insert, and socket. In the diagram, F represents "face" and B represents "face".

[0068] [First Implementation Method]

[0069] Figure 1 This is a front view of the zipper 100 according to the first embodiment of the present invention. Figure 2 It is a magnified front view showing the disconnected state of the first and second separate inserts, with the first and second zipper teeth separated. Figure 3 The side view of the slider is represented by dashed lines.

[0070] like Figure 1 as well as Figure 2As shown, the zipper 100 includes: a pair of first and second zipper teeth (hereinafter, the zipper teeth are also simply referred to as "toothed teeth") 30A and 30B; a zipper pull 40 for a user to move in the vertical direction to open and close the zipper between the first and second toothed teeth 30A and 30B; and a zipper detacher insert (hereinafter referred to as "detacher insert") 1, formed at the lower end of the first and second toothed teeth 30A and 30B in the vertical direction along the long side, according to one embodiment of the present invention. In this example, there is one zipper pull 40 between the first and second toothed teeth 30A and 30B, but there may also be two or more.

[0071] The first and second zipper belts 30A and 30B respectively include: a long strip-shaped zipper belt (hereinafter referred to as "belt") 31a and 31b in the vertical direction; zipper teeth (hereinafter referred to as "teeth") 32 installed on the inner edge of the opening and closing side along the width direction of each belt 31a and 31b; and an upper stop 33 that restricts the upward movement of the zipper head 40.

[0072] From now on, the belt 31a constituting the first tooth chain belt 30A is sometimes referred to as the first belt, and the belt 31b constituting the second tooth chain belt 30B is sometimes referred to as the second belt. In this example, belts 31a and 31b are woven or knitted from polyamide fibers, polyester fibers, acrylic fibers, etc., and the chain teeth 32 are made of synthetic resins such as polyester and nylon, but are not limited to these. In addition, the type of chain teeth 32 is not limited, for example, it can also be a spiral chain tooth. In addition, the chain tooth 32 located at the lowermost end of the second tooth chain belt 30B is sometimes referred to as the first chain tooth 32A. The first chain tooth 32A engages with the lower insert bar 11 and the upper chain tooth 32.

[0073] Also refer to the side of the slider 40, which is indicated by a dashed line. Figure 3 The zipper pull 40 includes a zipper pull body 41 and a pull tab 42 connected to the zipper pull body 41. The zipper pull body 41 has: a front wing plate 43 disposed on the front side of the first and second tooth chain straps 30A and 30B; and a back wing plate 44 disposed on the back side of the first and second tooth chain straps 30A and 30B. The front wing plate 43 and the back wing plate 44 are connected above each other and centrally in the left-right direction by a guide post 45, thereby defining an upward Y-shaped guide path for the chain teeth between the front wing plate 43 and the back wing plate 44.

[0074] Figure 1 and Figure 3 Reference numeral 46 refers to the pull tab retainer connected to the pull tab 42, and the pull tab retainer 46 protrudes from the wing plate 43. Figure 1With the lower ends of the first and second chain straps 30A and 30B connected via the separating insert 1 (described later), if the user holds the pull tab 42 and moves the zipper head 41 upwards (UP), the left and right chain teeth 32 engage through the chain tooth guide path between the back flaps 43 and 44, closing the first and second chain straps 30A and 30B. If the zipper head 41 is moved downwards (DN), the engagement of the left and right chain teeth 32 is released, opening the first and second chain straps 30A and 30B.

[0075] On the left and right sides below the wing plate 43, raised protrusions 43a are provided on the back side (B) to prevent the left and right chain teeth 32 from disengaging from the chain tooth guide path (see reference). Figure 3 Additionally, slightly raised ridges 44a are provided on the left and right sides below the back wing plate 44 on the outer side (F). The interval T1 between these ridges 43a and 44a is the minimum interval between the back wing plates 43 and 44, and this minimum interval T1 is less than the maximum thickness of the chain tooth 32 in the back direction, but greater than the thickness of the band 31.

[0076] Not shown in the figure, the separating insert 1 can also be formed by injection molding or extrusion molding of thermoplastic resins such as polyacetal, polyamide, polypropylene, and polybutylene terephthalate to reinforce the lower ends of the left and right strips 31a and 31b. Such reinforcing sections are formed by welding thermoplastic resin films such as polyamide and polyethylene to the lower ends of the left and right strips 31a and 31b using ultrasonic processing, or by impregnating and curing thermoplastic resin liquid. Preferably, the reinforcing sections are provided along the entire width of each strip 31a and 31b.

[0077] The separating insert 1 includes: a first separating insert portion 10 disposed at the lower end of the first toothed chain belt 30A; and a second separating insert portion 20 disposed at the lower end of the second toothed chain belt 30B. The first separating insert portion 10 and the second separating insert portion 20 are capable of being connected and disconnected. Figure 1 The text indicates the connection state of the first and second separate inserts 10 and 20. Figure 2 The connection release state of the first and second separation inserts 10 and 20 is shown in a magnified view.

[0078] Figure 4 This is a perspective view of the first separating insert 10 and the second separating insert 20. Figure 5A This is a front view of the first separating insert 10 viewed from the surface side. Figure 5B This is a rear view of the first separating insert 10, viewed from the rear side. Figure 5C This is a right-side view of the first separating insert 10 as seen from the right side in the width direction.

[0079] likeFigures 1-2 as well as Figures 4-5C As shown, the first separation insert 10 is a long insert 11 in the vertical direction located on the inner edge side in the width direction at the lower end of the first toothed chain 30A. Not shown in the figure, the first separation insert 10 may also have a structure including the insert 11, a first reinforcing strip, and a first connecting part. The first reinforcing strip extends to the left of the insert 11 in the width direction and is arranged approximately parallel to the insert 11, and is longer in the vertical direction. The first connecting part connects the insert 11 and the first reinforcing strip in the width direction.

[0080] In the direction of the back of the watch, the thickness of the insert 11 is slightly thicker than the thickness of the first band 31a. Therefore, the surface 11b and the back surface 11c of the insert 11 slightly bulge from the surface and back surface of the first band 31a. The degree to which the surface 11b and the back surface 11c of the insert 11 bulge from the surface and back surface of the band 31 is the same as or slightly less than the degree to which the surface and back surface of the chain tooth 32 bulge from the surface and back surface of the bands 31a and 31b.

[0081] The insert bar 11 has a protrusion 11a that protrudes to the right at its upper right end. The protrusion 11a is called a so-called half-chain tooth and engages with the seat bar 21b of the second zipper tooth chain 30B and the first chain tooth 32A.

[0082] like Figure 5C As shown, on the upper part of the right side of the insert 11, a locking groove 11e is formed in a recessed manner below the protrusion 11a, which accommodates the locking portion 21d of the seat 21b. The locking groove 11e is formed in the center of the right side of the insert 11 in the direction of the back surface.

[0083] The insertion rod 11 is inserted into or removed from the insertion rod hole 25 of the socket 21 of the second separation insert 20 (described later), thereby connecting and disconnecting the first separation insert 10 and the second separation insert 20.

[0084] On the lower part of the surface 11b and the back surface 11c of the insert 11, recesses 16 and 17 are respectively provided, which are recessed in the direction of reducing the thickness of the insert 11 in the surface-back direction. The recesses 16 and 17 are located slightly above the lower ends of the surface 11b and the back surface 11c. In addition, the recesses 16 and 17 do not necessarily have to be provided on both the surface 11b and the back surface 11c of the insert 11; they only need to be provided on at least one of the surface 11b and the back surface 11c. The recess 16 and 17 provided on the surface 11b is called the surface-side recess 16, and the recess 17 provided on the back surface 11c is called the back-side recess 17.

[0085] The surface recess 16 includes: an upper inclined surface 16d, which increases the thickness of the surface recess 16 by tilting downwards from the upper end of the surface recess 16 in the insertion / removal direction (vertical direction) of the insert rod 11; a lower inclined surface 16e, which increases the thickness of the surface recess 16 by tilting upwards from the lower end of the surface recess 16 in the insertion / removal direction of the insert rod 11; and a parallel surface 16c, which connects the upper inclined surface 16d and the lower inclined surface 16e and is parallel to the insertion / removal direction (vertical direction) and the width direction (left-right direction) of the insert rod 11.

[0086] Additionally, the back recess 17 includes: an upper inclined surface 17d, which increases the thickness of the back recess 17 by tilting downwards from the upper end of the back recess 17 in the insertion / removal direction (vertical direction) of the insert rod 11; a lower inclined surface 17e, which increases the thickness of the back recess 17 by tilting upwards from the lower end of the back recess 17 in the insertion / removal direction of the insert rod 11; and a parallel surface 17c, which connects the upper inclined surface 17d and the lower inclined surface 17e and is parallel to the insertion / removal direction (vertical direction) and the width direction (left-right direction) of the insert rod 11.

[0087] The surface recess 16 and the back recess 17 are formed along the entire width of the surface 11b and the back surface 11c of the insert 11. Therefore, the surface recess 16 and the back recess 17 penetrate the insert 11 in the width direction, and have left openings 16a and 17a on the left side of the width direction and right openings 16b and 17b on the right side of the width direction.

[0088] Figure 6A This is a front view of the second separation insert 20 viewed from the surface side. Figure 6B This is a rear view of the second separating insert 20, viewed from the rear side. Figure 6C This is a left-side view of the second separation insert 20 viewed from the left in the width direction. Figure 7 This is a front view of the second separating insert 20 viewed from the surface side, and it is... Figure 6C The arrow view of section VII-VII shows the diagram of socket 21. Figure 8 This is a rear view of the second separating insert 20 viewed from the back side, and it is... Figure 6C The arrow view in section VIII-VII shows the diagram of socket 21.

[0089] like Figures 1-2 , Figure 4 as well as Figures 6A-8As shown, the second separation insert 20 is a socket 21 provided in a way that covers the inner edge of the lower end of the second toothed chain 30B in the width direction. Not shown in the figure, the first separation insert 10 may also have a structure including a socket 21, a second reinforcing strip, and a second connecting part. The second reinforcing strip extends from the right side of the socket 21 to the right in the width direction and upwards, and the second connecting part connects the socket 21 and the second reinforcing strip.

[0090] The socket 21 has: a base 21a, which has a prong hole 25 on its left half for inserting and removing the prong 11 in the vertical direction (the direction of the long side of the zipper 100) (see reference). Figure 4 (etc.); and a base rod 21b, which protrudes upward from the right half of the upper surface of the base body 21a.

[0091] In the direction of the back of the face, the base 21b has approximately the same thickness as the insert 11. By inserting the insert 11 into the insert hole 25 of the base 21a, the first and second separate insertion portions 10, 20 are connected (see reference). Figure 1 The lower ends of the first and second toothed chain straps 30A and 30B are aligned. If the insert 11 is pulled out of the insert hole 25 of the base 21a, the connection between the first and second separating inserts 10 and 20 is released (see reference). Figure 2 ).

[0092] The base bar 21b is disposed along the inner edge of the second toothed chain belt 30B in the width direction and is integrally formed with the base body 21a. The base bar 21b has a locking portion 21d protruding towards the first belt 31a (left side) at its upper left end. The locking portion 21d is formed at the center of the base bar 21b in the face-back direction. When the first and second separate insert portions 10 and 20 are connected, the locking portion 21d of the base bar 21b is engaged with the locking groove 11e of the insert bar 11 (see reference). Figure 5C ).

[0093] The 40-speed puller can be used from Figure 1 The state moves to the lowest position where it abuts against the seat 21a. The pull head 40 moves from... Figure 1 When the device is in the lowest position, abutting against the separating insert 1, the insert bar 11 of the first separating insert 10 is pulled out from the base 21a. Then, the insert bar 11 is pulled upwards through the tooth guide path between the back flaps 43 and 44 of the zipper pull 40, thereby disengaging the first separating insert 10 from the second separating insert 20. This separates the first tooth chain strap 30A from the second tooth chain strap 30B. At this time, the zipper pull 40 remains on the second tooth chain strap 30B.

[0094] The socket 21 of this embodiment includes: a base rod 21b, which is arranged parallel to the upper part and the right side R (second band 31b side) of the vertically extending plug rod 11; and a base body 21a, which has a plug hole 25 for inserting and removing the lower part of the plug rod 11. Moreover, the plug hole 25 is formed on the upper surface of the base body 21a and the left side L (first band 31a side). Similarly, the base rod 21b engages with the upper surface of the base body 21a and the right side R (second band 31b side) in an upwardly protruding state.

[0095] The base 21a is a hexahedron with left, right, top, and bottom faces. In the illustrated example, each face is planar. Planarity includes not only flat surfaces but also curved surfaces (expanded curved surfaces and recessed curved surfaces). For example, in the illustrated example, the surface and back are expanded curved surfaces (more specifically, surfaces that gradually expand towards the surface from both ends in the left-right direction). Furthermore, the base 21a has a groove 61 on the left side of the first band 31a side for inserting the first band 31a. The groove 61 is a groove that extends vertically, opening at the top (UP) and closing at the bottom (DN). A insertion hole 25 is connected to the right side R (second band 31b side) of this groove 61, opening at the top (UP). On the other hand, the left side L (first band 31a side) of the bottom DN of the insertion hole 25 is closed, and a sliding hole 63 is provided through the right side R (second band 31b side).

[0096] The base 21a includes: an upper and lower extension wall 53 extending downward DN from the lower end of the base bar 21b; a front cylindrical wall 54 and a back cylindrical wall 55 protruding parallel to the left side L (first band 31a side) in the left-right direction from both ends of the upper and lower extension walls 53; a joining wall 56 joining the lower ends of the left side L (first band 31a side) ends of the front cylindrical wall 54 and the back cylindrical wall 55 in their total length in the vertical direction; and groove walls 57, 57 protruding from the left side L (first band 31a side) ends of the front cylindrical wall 54 and the back cylindrical wall 55 in a manner that narrows the gap between the front cylindrical wall 54 and the back cylindrical wall 54. Furthermore, the space formed between the pair of groove walls 57, 57 in the back of the watch is called a groove 61. In the illustrated example, each groove wall 57 is formed across the entire range above the joining wall 56 in the vertical direction of the front cylindrical wall 54 and the back cylindrical wall 55. Therefore, the lower DN of the mating wall 56 and the pair of groove walls 57, 57 on the back of the watch is continuous. In addition, the socket 21 of this embodiment has a symmetrical shape on the back of the watch, and the groove 61 is disposed in the center of the socket 21 in the direction of the back of the watch.

[0097] The upper and lower extension walls 53 are rod-shaped with a rectangular cross-section. Furthermore, in the illustrated example, the left and right widths of the upper and lower extension walls 53 are wider than that of the base rod 21b. The left side (the side of the insertion hole 25) of the left side L (first band 31a side) of the upper and lower extension walls 53 is located L to the left of the base rod 21b, and forms the right side 25c of the insertion hole 25 and the right side wall 63b of the sliding hole 63. The right side R (second band 31b side) of the upper and lower extension walls 53 protrudes further to the right than the base rod 21b. Additionally, the front cylindrical wall 54 and the back cylindrical wall 55, protruding to the left L (first band 31a side) from both ends of the upper and lower extension walls 53, are plate-shaped.

[0098] The joining wall 56 includes: a groove closing portion 56a that closes the area below the groove 61; and a hole closing portion 56b that closes the side of the first band 31a below the insertion rod hole 25. Therefore, the space surrounded by the joining wall 56 (hole closing portion 56b), the upper and lower extension walls 53, the outer cylindrical wall 54, and the back cylindrical wall 55 becomes the first sliding member 7 for resin molding (see below). Figures 12-14 The sliding hole 63 is inserted and is connected to the insertion rod hole 25.

[0099] The inner surface of the insertion hole 25 constituting the socket 21 includes: a front side 25a, which is formed by the back side of the front side cylindrical wall 54 and faces the surface 11b of the insertion rod 11; a back side 25b, which is formed by the surface of the back side cylindrical wall 55 and faces the back side 11c of the insertion rod 11; a right side 25c, which is formed by the left side of the first strip 31a side of the upper and lower extension walls 53 and faces the right side of the second strip 31b side of the insertion rod 11; and a pair of left side surfaces 25d, 25d, which are formed by the right side of the second strip 31b side of a pair of groove walls 57, 57 on the back side and face the left side of the first strip 31a side of the insertion rod. The pair of left side surfaces 25d, 25d have a groove 61 between them in the front-back direction, and are therefore separated from each other in the front-back direction.

[0100] In the inner surface of the socket 21 that forms the insertion hole 25, protrusions 26 and 27 are respectively provided on the surface side 25a and the back side 25b opposite to the surface 11b and the back side 11c of the insertion rod 11, which can engage with the surface side recess 16 and the back side recess 17 of the insertion rod 11. Furthermore, protrusions 26 and 27 do not necessarily have to be provided on both the surface side 25a and the back side 25b; they only need to be provided on at least one of the surface side 25a and the back side 25b. Among the protrusions 26 and 27, the protrusion provided on the surface side 25a (the back wall of the surface cylindrical wall 54) is called the surface side protrusion 26, and the protrusion provided on the back side 25b is called the back side protrusion 27.

[0101] like Figure 7 as well as Figure 8As shown, the surface protrusion 26 and the back protrusion 27, which are perpendicular to the aforementioned insertion and removal direction, are asymmetrical in shape relative to the central portion of the surface protrusion 26 and the back protrusion 27 in the insertion and removal direction (vertical direction) of the insertion rod 11.

[0102] More specifically, the surface protrusion 26 includes: an upper inclined surface 26a, which increases the thickness of the surface protrusion 26 by tilting downward toward the back side as the upper end of the surface protrusion 26 in the insertion / removal direction (vertical direction) of the insert rod 11 is inclined downward toward the back side; and a lower inclined surface 26b, which increases the thickness of the surface protrusion 26 by tilting upward toward the back side as the lower end of the surface protrusion 26 in the insertion / removal direction of the insert rod 11 is inclined upward toward the back side, with the inclination of the upper inclined surface 26a being greater than that of the lower inclined surface 26b.

[0103] Additionally, the back side protrusion 27 includes: an upper inclined surface 27a, which increases the thickness of the back side protrusion 27 by tilting downward toward the surface as the upper end of the back side protrusion 27 in the insertion / removal direction (vertical direction) of the insertion rod 11 moves toward the surface; and a lower inclined surface 27b, which increases the thickness of the back side protrusion 27 by tilting upward toward the surface as the lower end of the back side protrusion 27 in the insertion / removal direction of the insertion rod 11 moves toward the surface, with the inclination of the upper inclined surface 27a being greater than that of the lower inclined surface 27b.

[0104] In this way, by making the inclination of the upper inclined surfaces 26a and 27a that the plug 11 contacts when it is inserted into the plug hole 25 relatively steep, and setting the inclination of the lower inclined surfaces 26b and 27b that the plug 11 contacts when it is pulled out of the plug hole 25 relatively gentle, the force Fin required to insert the plug 11 into the plug hole 25 is greater than the force Fout required to pull the plug 11 out of the plug hole 25 (Fin>Fout).

[0105] In addition, the front-side protrusion 26 and the back-side protrusion 27 each include parallel surfaces 26c and 27c that connect the upper inclined surfaces 26a and 27a and the lower inclined surfaces 26b and 27b, and are parallel to the insertion / removal direction (vertical direction) and width direction (horizontal direction) of the insertion rod 11. These parallel surfaces 26c and 27c are located at positions that intersect with the aforementioned plane P.

[0106] As described above, the front recess 16 and back recess 17 of the plug 11 are formed across the entire width of the plug 11. In contrast, the front protrusion 26 and back protrusion 27 of the socket 21 are formed only a portion of the width of the plug hole 25, not across the entire width of the plug hole 25. Furthermore, the lateral length of the front recess 16 and back recess 17 is greater than the lateral length of the front protrusion 26 and back protrusion 27. Additionally, the vertical length of the front recess 16 and back recess 17 is approximately equal to the vertical length of the front protrusion 26 and back protrusion 27.

[0107] With the plug 11 fully inserted into the plug hole 25 of the socket 21, the front protrusion 26 and back protrusion 27 of the socket 21 engage with the front recess 16 and back recess 17 of the plug 11, thus preventing the plug 11 from being pulled out of the socket 21. Therefore, after the plug 11 is combined with the socket 21, the plug 11 will not shift, making it difficult for the chain teeth to be misaligned, and thus making it easier to pull up the pull head 40.

[0108] Here, as described above, the inclination of the upper inclined surfaces 26a and 27a is greater than that of the lower inclined surfaces 26b and 27b. When the insert rod 11 is inserted into the insert rod hole 25, the inclination of the upper inclined surfaces 26a and 27a that it contacts is relatively steep. Therefore, the force Fin required to insert the insert rod 11 into the insert rod hole 25, i.e., the force required for the insert rod 11 to pass over the protrusions 26 and 27 and engage, is set to be relatively large. Specifically, Fin is set to 4–6 N.

[0109] Therefore, a relatively large force is required to fully insert the plug 11 into the plug hole 25. As a result, the user can obtain a clicking or snapping insertion feeling by the resistance or sound of the plug 11 passing over the protrusions 26 and 27, and can properly identify when the plug 11 is fully inserted into the socket 21.

[0110] In particular, in this embodiment, recesses 16 and 17 are respectively provided on the surface 11b and back surface 11c of the plug 11, and protrusions 26 and 27 are respectively provided on the surface 25a and back surface 25b of the plug hole 25. Therefore, in order to increase the force Fin required for the protrusions 26 and 27 to engage with the recesses 16 and 17, the user can more reliably obtain a click-like insertion sensation, thereby more appropriately identifying when the plug 11 is fully inserted into the socket 21. When the recesses 16 and 17 are separated in the insertion / removal direction (vertical direction), the engagement of recesses 16 and 17 is staggered. Therefore, the positions of recesses 16 and 17 in the insertion / removal direction are preferably the same or close. The corresponding protrusions 26 and 27 are the same.

[0111] In addition, the protrusions 26 and 27 have parallel surfaces 26c and 27c that smoothly connect the upper inclined surfaces 26a and 27a and the lower inclined surfaces 26b and 27b, and are parallel to the insertion and removal direction (vertical direction) and the width direction (left and right direction) of the insertion rod 11, so that the protrusions 26 and 27 and the recesses 16 and 17 can be engaged with less wobbling.

[0112] In addition, the recesses 16 and 17 extend through the insert 11 in the width direction and have left-side openings 16a and 17a and right-side openings 16b and 17b (see reference). Figure 5A as well as Figure 5BTherefore, even if dirt or clothing fibers or other dust enter the recesses 16 and 17, they can be easily discharged through the left openings 16a and 17a and the right openings 16b and 17b. Furthermore, if such dust accumulates in the recesses 16 and 17, the user will not experience a proper insertion sensation when inserting the insertion rod 11 into the insertion rod hole 25, which is unsatisfactory.

[0113] Furthermore, as described above, the lengths of the recesses 16 and 17 in the width direction (the length between the left openings 16a and 17a and the right openings 16b and 17b) are set to be greater than the lengths of the protrusions 26 and 27 in the width direction (the length between the left side surfaces 26d and 27d and the right side surfaces 26e and 27e). Therefore, the protrusions 26 and 27 can easily be inserted into the recesses 16 and 17. For example, the insert 11 may be inserted at an angle in the width direction (left-right direction) relative to the insert hole 25, but in this case, the recesses 16 and 17 of the insert 11 also reliably engage with the protrusions 26 and 27 of the insert hole 25. In addition, even when the protrusions 26 and 27 are in contact with the recesses 16 and 17 after engagement, the protrusions 26 and 27 elastically deform in the width direction within the recesses 16 and 17, thus preventing localized stress from being generated in the protrusions 26 and 27.

[0114] Furthermore, when the recesses 16 and 17 engage with the protrusions 26 and 27, the gap in the width direction (left-right direction) between the recesses 16 and 17 and the protrusions 26 and 27 is larger than the gap in the insertion direction (up-down direction) between the inserts 11 of the recesses 16 and 17 and the protrusions 26 and 27. This structure provides a satisfying, click-fitting insertion feel when the recesses 16 and 17 engage with the protrusions 26 and 27, and the protrusions 26 and 27 easily embed into the recesses 16 and 17. Additionally, the former has a larger gap in the width direction, while the latter has zero or very small gaps in the up-down direction.

[0115] When the insert 11 is pulled upward from the state where it is fully inserted into the insert hole 25, the lower end of the insert 11 interferes with a pair of protrusions 26 and 27 on the surface of the insert hole 25, just as when it was inserted.

[0116] More specifically, if the plug 11 is pulled out from the plug hole 25, the lower inclined surfaces 16e and 17e of the recesses 16 and 17 on the back of the plug 11 abut against the lower inclined surfaces 26b and 27b of the pair of protrusions 26 and 27 on the back of the watch. By providing multiple inclined surfaces 26b, 27b, 16e, and 17e on the socket 21 or the plug 11, the plug 11 is smoothly guided between the pair of protrusions 26 and 27 on the back of the watch. Furthermore, as the parallel surfaces 16c and 17c on the back of the insert 11 abut against the lower inclined surfaces 26b and 27b and the parallel surfaces 26c and 27c on the protrusions 26 and 27, the insert 11 pushes the socket 21 outward toward the back of the insert while passing over the protrusions 26 and 27, thereby releasing the engagement between the front recess 16 and the back recess 17 of the insert 11 and the front protrusion 26 and the back protrusion 27 of the socket 21.

[0117] Here, as described above, the inclination of the lower inclined surfaces 26b and 27b is smaller than that of the upper inclined surfaces 26a and 27a. The inclination of the lower inclined surfaces 26b and 27b that come into contact with the insert rod 11 when it is pulled out of the insert rod hole 25 is set to be relatively gentle. Therefore, the force Fout required to pull the insert rod 11 out of the insert rod hole 25, that is, the force required to release the engagement of the insert rod 11 over the protrusions 26 and 27, is set to be relatively small.

[0118] Here, as Figure 7 as well as Figure 8 As shown, the front protrusion 26 and the back protrusion 27 are inclined to the first side (left side L) in the left-right direction as they face downward DN. In addition, on the right side 25c of the second side (right side R) in the left-right direction of the inner surfaces 25a, 25b, 25c, and 25d that constitute the plug hole 25 of the socket 21, an inclined surface 29 is provided that is inclined to the first side (left side L) in the left-right direction as it faces downward.

[0119] The right side surface 25c of the insertion hole 25 includes: a plane 22 disposed at the upper end of the right side surface 25c and extending parallel to the vertical direction; and an inclined surface 29 connected to the lower end of the plane 22. In the illustrated example, the majority of the right side surface 25c is the inclined surface 29, and the vertical dimension of the inclined surface 29 is more than 5 times the vertical dimension of the plane 22.

[0120] The sliding hole 63, which communicates with the insertion hole 25, is formed by the right side of the joining wall 56 (hole closing portion 56b), the left side of the upper and lower extension walls 53, the back side of the outer cylindrical wall 54, and the surface of the back cylindrical wall 55. Specifically, the right side of the joining wall 56 (hole closing portion 56b) constitutes the left side wall 63a of the sliding hole 63, and the lower part of the left side of the upper and lower extension walls 53 constitutes the right side wall 63b of the sliding hole 63.

[0121] The inclined surface 29 of the right side 25c of the insertion hole 25 smoothly connects to the right side wall 63b of the sliding hole 63, forming the same plane. Therefore, the right side wall 63b is also inclined at the same angle α1 as the inclined surface 29. The angle α1 of these inclined surfaces 29 and the right side wall 63b relative to the vertical direction is approximately 8°. Figure 7 as well as Figure 8 The diagram shows the angle α1 formed by the extension line S1 of the inclined surface 29 and the right side wall 63b with the vertical direction.

[0122] The left side wall 63a of the sliding hole 63 is similar to the inclined surface 29 of the right side surface 25c of the insertion rod hole 25 and the right side wall 63b of the sliding hole 63, and is inclined to the first side (left side L) in the left-right direction as it faces downward DN. The inclination angle α2 of the left side wall 63a of the sliding hole 63 relative to the vertical direction is approximately 8°. Figure 7 as well as Figure 8 The diagram shows the angle α2 formed by the extension line S2 of the left side wall 63a of the sliding hole 63 and the vertical direction.

[0123] The inclined surface 29 of the insertion hole 25 and the extension line S1 of the right side wall 63b of the sliding hole 63 are parallel to the extension line S2 of the left side wall 63a of the sliding hole 63. Therefore, the inclination angles α1 and α2 are the same (α1=α2≈8°). Thus, the inclination angle of the sliding hole 63 is α1 or α2, approximately 8°.

[0124] The left side surfaces 26d and 27d of the front side protrusion 26 and the back side protrusion 27 are located on the extension line S2 of the left side wall 63a of the sliding hole 63. Furthermore, the right side surfaces 26e and 27e of the front side protrusion 26 and the back side protrusion 27 are parallel to the left side surfaces 26d and 27d. Therefore, the left side surfaces 26d and 27d and the right side surfaces 26e and 27e of the front side protrusion 26 and the back side protrusion 27 are parallel to the extension line S2 inclined at an angle α2, and the angle of inclination of the front side protrusion 26 and the back side protrusion 27 is equal to α2, approximately 8°. Thus, the angles of inclination α2 of the front side protrusion 26 and the back side protrusion 27 relative to the vertical direction, the angle of inclination α1 of the inclined surface 29 of the insertion hole 25 relative to the vertical direction, and the angles of inclination α1 and α2 of the sliding hole 63 relative to the vertical direction are the same.

[0125] The front-side protrusion 26 and the back-side protrusion 27 are located between the upper and lower ends of the inclined surface 29 of the insertion hole 25 in the vertical direction. More specifically, as... Figure 7 as well as Figure 8As shown by the dashed line, a front protrusion 26 and a back protrusion 27 are disposed between an upper plane 29a, which passes through the upper end of the inclined surface 29 and is perpendicular to the vertical direction, and a lower plane 29b, which passes through the lower end of the inclined surface 29 and is perpendicular to the vertical direction, in the vertical direction. More preferably, in the example shown, the entire front protrusion 26 and the back protrusion 27 are located between the central portion 29c of the upper plane 29a and the lower plane 29b in the vertical direction.

[0126] Figure 9A It is a diagram showing the state of the plug relative to the plug hole of the socket during insertion, and it is a diagram showing a partial cut-off of the pull head. Figure 9B It means and Figure 9A The diagram shows the same state, and is a view of the pull head from the surface. Figure 9C It means and Figure 9A The diagram shows the same state, but it represents a partial truncated view of the socket. Additionally, in... Figure 9C The diagram only shows the guide post 45 in the slider 40.

[0127] To connect the left and right zipper teeth 30A and 30B, first, as follows: Figures 9A-9C As shown, with the first and second zipper teeth 30A and 30B separated, the zipper pull 40 is positioned at its lowest point in contact with the socket 21. Then, the insert rod 11 is passed through the zipper tooth guide path 47 of the zipper pull 40 and inserted into the insert rod hole 25 of the socket 21.

[0128] like Figure 9C As shown, the insert rod 11 is inserted into the insert rod hole 25 at an insertion angle θ relative to the vertical direction. Furthermore, the front end (lower end) of the insert rod 11 contacts the inclined surface 29 of the insert rod hole 25. At this time, the protrusion 11a of the insert rod 11 abuts against the lower tapered surface 45a of the guide post 45 of the pull head 40. A pair of tapered surfaces 45a are provided at the lower end of the pull head 40, and they are inclined in a manner that extends downwards towards the center in the left-right direction.

[0129] Here, as Figure 9B As shown, the pull head 40 contacts the socket 21, and the gap between them is zero, as... Figure 9C As shown, the vertical distance between the lower end of the guide post 45 of the pull head 40 and the upper end of the seat rod 21b is L.

[0130] If from Figures 9A-9C If the insertion rod 11 is further inserted into the state shown, the insertion rod 11 will abut against the inclined surface 29, and a rotational torque will be applied to the insertion rod 11 in the direction where the insertion angle θ decreases (clockwise in the figure).

[0131] Figure 10AIt is a diagram showing the state in which the plug is fully inserted into the plug hole of the socket, and it is a diagram showing a partial cut-off of the pull head. Figure 10B It means and Figure 10A The diagram shows the same state, and is a view of the pull head from the surface. Figure 10C It means and Figure 10A The diagram shows the same state, but is a partial cut-off representation of the pull tab and socket. Additionally, in... Figure 10C The diagram only shows the guide post 45 in the slider 40.

[0132] like Figures 10A-10C As shown, the insert rod 11, which is given a rotational torque, presses against the tapered surface 45a of the guide post 45 of the pull head 40, pushing the pull head 40 upward (UP) while rotating and moving downward (DN), engaging with the seat rod 21b. The insert rod 11 abuts against the hole closure portion 56b of the engagement wall 56 at its lower end, preventing it from moving further downward (DN). In addition, the hole closure portion 56b can serve as a fulcrum when the insert rod 11 rotates in the direction where the insertion angle θ decreases.

[0133] like Figure 10B As shown, the vertical gap between the upward-moving pull head 40 and the socket 21 is 'a'. Figure 10C As shown, the vertical distance between the lower end of the guide post 45 of the pull head 40 and the upper end of the seat rod 21b is L+a.

[0134] By inserting only the insert bar 11 into the socket 21, the zipper pull 40 automatically rises to a position only a distance 'a' from the socket 21. Therefore, the protrusion 11a (half-tooth) of the insert bar 11 and the base bar 21b are engaged, and the protrusion 11a of the insert bar 11 and the first tooth 32A on the side of the second zipper chain 30B are approximately engaged. As in this embodiment, by guiding the engagement of the insert bar 11 with the base bar 21b and the first tooth 32A when the insert bar 11 is inserted, smooth operation is possible when the zipper pull 40 is pulled up, thereby improving operability.

[0135] Furthermore, since the front protrusion 26 and the back protrusion 27 are inclined in the same direction as the inclined surface 29, the insert rod 11, guided by the inclined surface 29, can smoothly pass over the front protrusion 26 and the back protrusion 27, resulting in good operability. In addition, since a force is applied to the insert rod 11 when passing over the front protrusion 26 and the back protrusion 27, the rotational torque increases, thereby making the pull head 40 rise more reliably and more reliably guiding the engagement of the insert rod 11 with the seat rod 21b and the first chain tooth 32A.

[0136] In particular, in this embodiment, since the tilt angle α2 of the front side protrusion 26 and the back side protrusion 27 is the same as the tilt angle α1 of the tilt surface 29, the insertion rod 11 guided by the tilt surface 29 can smoothly pass over the front side protrusion 26 and the back side protrusion 27, thus providing good operability.

[0137] Furthermore, since the front protrusion 26 and the back protrusion 27 are located between the upper end (upper plane 29a) and the lower end (lower plane 29b) of the inclined surface 29 in the vertical direction, after the insertion rod 11 is subjected to rotational torque by abutting against the inclined surface 29, the insertion rod 11 passes over the front protrusion 26 and the back protrusion 27. Therefore, a force can be added to the rotation of the insertion rod 11, thereby more reliably guiding the engagement of the insertion rod 11 with the seat rod 21b and the first chain tooth 32A.

[0138] From the perspective of further adding force to the rotation of the insertion rod 11, such as Figure 7 as well as Figure 8 As shown, preferably, the entire surface protrusion 26 and the back protrusion 27 are located between the vertical center portion 29c and the lower plane 29b of the upper plane 29a and the lower plane 29b. In this way, by providing the surface protrusion 26 and the back protrusion 27 at the lower part of the insertion hole 25, after the insertion rod 11 applies force within the insertion hole 25, it further applies rotational force by passing over the surface protrusion 26 and the back protrusion 27.

[0139] Figure 11A This diagram shows the state in which the plug is fully inserted into the socket in a comparative example where the plug hole is not provided with an inclined surface, and it is a diagram showing the pull head partially truncated. Figure 11B This indicates that in the comparative example where the insertion hole does not have an inclined surface, compared to... Figure 11A The diagram shows the same state, and is a view of the pull head from the surface.

[0140] exist Figure 11A as well as Figure 11B In the comparative example shown, the right side 25c of the socket 21's prong hole 25 is formed only by the plane 22 (see reference). Figure 7 as well as Figure 8 ) is formed, and no inclined surface 29 is provided. Figure 11A as well as Figure 11B This indicates that the insertion of the plug 11 into the plug hole 25 is complete, but the pull head 40 remains in contact with the socket 21, and the gap between the pull head 40 and the socket 21 is zero. That is, in the comparative example, since there is no inclined surface 29 in the plug hole 25, no rotational torque is generated on the plug 11 in the direction of decreasing insertion angle θ, and the pull head 40 is not pushed up by the plug 11. Furthermore, as... Figure 11AAs shown, the insertion rod 11 is slightly far from the seat rod 21b, and the engagement between the insertion rod 11 and the seat rod 21b is not fully completed. Therefore, in the comparative example, the starting performance of the pull head 40 is worse than that of this embodiment.

[0141] [Manufacturing method of sockets]

[0142] In the manufacturing method of the socket 21 of the described embodiment, injection molding using resin as a raw material is used.

[0143] Figure 12 It is a surface view of the molding die used in the manufacturing method of the socket, and a view of the first and second sliding parts in the mold-open state. Figure 13 It is a surface view of the molding die used in the manufacturing method of the socket, and a view of the first and second sliding members in the mold-closed state.

[0144] like Figure 12 as well as Figure 13 As shown, the injection molding die used in this manufacturing method includes: a fixed die 5; a movable die (not shown) supported reciprocally relative to the fixed die 5 in the surface / back direction; and first and second sliding members 7 and 8, which are reciprocally movable relative to the fixed die 5 in the vertical direction. The movable die is not shown, but is positioned closer to the surface than the fixed die 5 and the first and second sliding members 7 and 8. Figure 12 as well as Figure 13 (Middle paper surface, near the front).

[0145] When the injection mold is closed, it forms a cavity 91, which is a space corresponding to the shape of the socket 21, a gate 92, which is a passage communicating with the cavity 91, and a runner 93, which is a passage communicating with the gate 92.

[0146] Cavity 91 has a base rod recess 21bx that forms the shape of base rod 21b and a base body recess 21ax that forms the outer surface (six-sided) of the shape of base body 21a. Cavity 91 is provided in fixed mold 5 and movable mold.

[0147] In this embodiment, the parting line formed on the socket 21 that becomes the product is located at the middle position of the full height and width of the socket 21 in the front and back directions. Therefore, the fixed mold 5 and the movable mold are formed with a front and back symmetrical shape. Moreover, half of the back side of the seat rod recess 21bx and half of the back side of the seat body recess 21ax are formed on the surface of the fixed mold 5 (the surface that mates with the movable mold).

[0148] In addition, since the movable mold (not shown) and the fixed mold 5 are symmetrical, half of the outer surface of the seat rod recess 21bx and half of the outer surface of the seat body recess 21ax are formed on the back of the movable mold (the surface that docks with the fixed mold 5).

[0149] The first sliding member 7 includes: a first base portion 71, which forms the lower surface side of the seat body 21a and mainly forms the lower surface of the joining wall 56 (more specifically, the left end of the lower surface side of the upper and lower extension walls 53 and the joining wall 56); a first sliding body portion 72, which protrudes upward from the upper surface of the first base portion 71; and a first side forming portion 73, which forms the side of the seat body 21a, the left side of the joining wall 56, and protrudes upward from the left end of the first base portion 71.

[0150] The first slider 7 as a whole is shaped to tilt to the second side (right side R) in the left-right direction as it faces upward. The tilt angle of the first slider 7 is represented by α1, α2, α3, etc., and is approximately 8°.

[0151] The first base portion 71 is shaped to tilt to a second side (right side R) in the left-right direction as it faces upward. The tilt angle α3 of the first base portion 71 relative to the vertical direction is approximately 8°, and is the same as the tilt angle α1 of the inclined surface 29 of the insertion hole 25 relative to the vertical direction, and the tilt angles α1 and α2 of the sliding hole 63 relative to the vertical direction (α1=α2=α3≈8°). The first slider 7 can reciprocate in the vertical direction along the direction tilted at the tilt angle α3 of the first base portion 71.

[0152] The first sliding main body 72 is a rod-shaped part that extends vertically and includes: a sliding hole protrusion 63x, which protrudes upward from the first base part 71 to form a sliding hole 63; and a second side portion protrusion 25y, which forms a second side (right side R) portion in the left-right direction of the insertion hole protrusion 25x formed on the insertion hole 25, and protrudes upward from the sliding hole protrusion 63x.

[0153] The sliding hole protrusion 63x is the same as the sliding hole 63, and has a shape that is inclined to the first side (L) in the left-right direction as it faces downward. Moreover, the inclination angle of the sliding hole protrusion 63x with respect to the up-down direction is the same as the inclination angles α1 and α2 of the sliding hole 63.

[0154] The second side portion of the protrusion 25y has: a first base 25ya, which is connected to the sliding hole protrusion 63x and extends upward; and a first front end portion 25yb, which is connected to the first base 25ya and extends upward.

[0155] The first base 25ya is formed by extending the upper end of the sliding hole protrusion 63x upwards. Therefore, the cross-sectional shape of the first base 25ya is a rod-shaped trapezoid with a cross-sectional shape that is approximately the same as that of the sliding hole protrusion 63x. Thus, the first base 25ya, like the sliding hole protrusion 63x, has a shape that tilts to a first side (L) in the left-right direction as it faces downwards. Furthermore, the tilt angle of the first base 25ya relative to the vertical direction is the same as the tilt angles α1 and α2 of the sliding hole protrusion 63x.

[0156] The first front end portion 25yb is a trapezoidal rod-shaped section, and it extends upwards not entirely from the upper end of the first base portion 25ya, but from a portion on the second side (right side R) of the upper end of the first base portion 25ya. Therefore, the thickness of the first front end portion 25yb in the front-back direction is equal to the thickness of the first base portion 25ya in the front-back direction, but the width of the first front end portion 25yb in the left-right direction is smaller than the width of the first base portion 25ya in the left-right direction. Therefore, the second side portion protrusion 25y is formed by the first base portion 25ya, which has a larger left-right width, and the first front end portion 25yb, which has a smaller left-right width, creating a stepped rod shape.

[0157] The right side surface of the first base portion 25ya and the right side surface of the first front portion 25yb, excluding the upper end, constitute an inclined surface forming portion 29x for forming an inclined surface 29 for forming a insertion hole 25. The inclined surface forming portion 29x, like the inclined surface 29, has a shape that inclines to a first side (L) in the left-right direction as it faces downwards. Furthermore, the inclination angle of the inclined surface forming portion 29x relative to the vertical direction is the same as the inclination angle α1 of the inclined surface 29. Additionally, the upper end of the right side surface of the first front portion 25yb constitutes a planar forming portion 22x for forming a planar surface 22 for forming a insertion hole 25.

[0158] The left side of the first front end portion 25yb has a shape that slopes downwards towards a first side (left side L). Here, the left side of the first front end portion 25yb becomes the first running surface 25yc, which runs against the right side (second running surface 25zc) of the second base portion 25za (described later) during mold closing. The first running surface 25yc slopes downwards towards a first side (left side L). Figure 12 as well as Figure 13 The diagram shows the first running surface 25yc with an inclination angle β relative to the vertical direction. As explained in detail later, this inclination angle β is, for example, about 9°, and is set to be greater than the inclination angles α1, α2, α3 (β≈9°>α1=α2=α3≈8°).

[0159] Furthermore, on the first side (left side L) of the upper end of the first base 25ya, there is a first recess 26x with a concave shape facing the back side B, which together with the second recess 26y described later forms the surface protrusion 26.

[0160] To form the lower half of the surface-side protrusion 26, the first recess 26x has a shape corresponding to the lower half of the surface-side protrusion 26. Specifically, the bottom surface of the first recess 26x includes: a lower inclined surface forming portion that forms the lower inclined surface 26b of the surface-side protrusion 26, and whose surface-back direction depth increases as it slopes upwards (UP) from the lower end of the first recess 26x towards the back side (B); and a parallel surface lower half forming portion that forms the lower half of the parallel surface 26c of the surface-side protrusion 26, and is parallel to both the vertical and width directions. The upper edge of the first recess 26x is a tapered surface that faces upwards towards the second side (right side R), and this tapered surface becomes the mating surface with the tapered surface of the lower edge of the second recess 26y, described later.

[0161] The upper end of the first side forming portion 73 becomes a first mating surface 73a that mates with the lower end (second mating surface 83a) of the second side forming portion 83 of the second slider 8 (described later). The first mating surface 73a is inclined upwards towards the first side (left side L) in the left-right direction. In the illustrated example, the first mating surface 73a is curved, but it can also be a straight inclined surface.

[0162] The second sliding member 8 includes: a second base portion 81, which forms the upper surface side of the seat body 21a and is formed to the left of the upper and lower extension walls 53 by a distance L; a second sliding main body portion 82, which protrudes downward from the second base portion 81; and a second side forming portion 83, which forms the left side of the groove wall 57 in the side of the seat body 21a and protrudes downward from the left end of the second base portion 81.

[0163] The second base portion 81 has a shape that extends parallel to the vertical direction. The second slider 8 can reciprocate parallel to the vertical direction along the second base portion 81. That is, the first slider 7 reciprocates at an angle α3 (α3=α1=α2≈8°) relative to the vertical direction, while the second slider 8 reciprocates parallel to the vertical direction without tilting.

[0164] The second sliding body portion 82 includes: a first side portion protrusion 25z, which forms a first side (left side L) portion in the left-right direction of the insertion hole protrusion 25x; and a grooved protrusion 61x, which forms a groove 61. The first side portion protrusion 25z, the grooved protrusion 61x, and the second side portion forming portion 83 protrude sequentially downward from the lower surface of the second base portion 81 from the right side R to the left side L.

[0165] The first side portion protrusion 25z has: a second base 25za that extends downward from the lower surface of the second base portion 81; and a second front end portion 25zb that is connected to the second base 25za and extends downward.

[0166] The second base 25za is a rod-shaped structure with a trapezoidal cross-section. The right side of the second base 25za has a shape that slopes downwards towards a first side (L). Here, the right side of the second base 25za becomes the second running surface 25zc, which runs against the left side (first running surface 25yc) of the first front end portion 25yb of the first sliding member 7 during mold closing. The first running surface 25yc and the second running surface 25zc have the same tilt angle β with respect to the vertical direction. This tilt angle β is, for example, about 9°, and is set to be greater than the tilt angles α1, α2, α3 (β≈9°>α1=α2=α3≈8°).

[0167] The second front end portion 25zb is a trapezoidal rod-shaped section, and it extends downward from the left side portion of the lower end portion of the second base 25za, rather than as a whole from the lower end portion of the second base 25za. Therefore, the thickness of the second front end portion 25zb in the front-back direction is equal to the thickness of the second base 25za in the front-back direction, but the width of the second front end portion 25zb in the left-right direction is smaller than the width of the second base 25za in the left-right direction. Therefore, the first side portion protrusion 25z forms a stepped rod shape from the second base 25za, which has a larger width in the left-right direction, and the second front end portion 25zb, which has a smaller width in the left-right direction.

[0168] Furthermore, on the second side (right side R) in the left-right direction of the lower end of the second base 25za, there is a second recess 26y with a concave shape facing the back side, which together with the first recess 26x described above forms a surface protrusion 26.

[0169] Since the second recess 26y forms the upper half of the surface protrusion 26, it has a shape corresponding to the upper half of the surface protrusion 26. Specifically, the bottom surface of the second recess 26y includes: an upper inclined surface forming portion that forms the upper inclined surface 26a of the surface protrusion 26, and the depth of the second recess 26y in the surface-back direction increases as it slopes downwards from the upper end of the first recess 26x; and a parallel upper half forming portion that forms the upper half of the parallel surface 26c of the surface protrusion 26, and is parallel to both the vertical and width directions. The lower edge of the second recess 26y is a tapered surface that faces downwards towards the first side (left side L), and this tapered surface becomes the mating surface with the tapered surface of the upper edge of the first recess 26x.

[0170] The lower end of the second side forming portion 83 becomes a second mating surface 83a that mates with the upper end (first mating surface 73a) of the first side forming portion 73 of the first slider 7. The second mating surface 83a is inclined upwards towards the first side (left side L) in the left-right direction. In the illustrated example, the second mating surface 83a is curved, but it can also be a straight inclined surface.

[0171] likeFigure 13 As shown, in the mold-closed state, the second running surface 25zc, which is the right side of the first side portion protrusion 25z, and the first running surface 25yc, which is the left side of the second side portion protrusion 25y, run into each other and make surface contact. Thus, the first side portion protrusion 25z and the second side portion protrusion 25y form the insert hole protrusion 25x for forming the insert hole 25.

[0172] Furthermore, by bringing the tapered surface of the upper edge of the first recess 26x into contact with the tapered surface of the lower edge of the second recess 26y, the first recess 26x and the second recess 26y are aligned in the vertical direction, and a surface protrusion forming portion 26z for forming the surface protrusion 26 is formed.

[0173] Since the surface protrusion forming portion 26z, which is composed of the first concave portion 26x and the second concave portion 26y, has a shape corresponding to the surface protrusion 26, the inclination of the upper inclined surface forming portion 26ax of the second concave portion 26y is greater than the inclination of the lower inclined surface forming portion 26bx of the first concave portion 26x, so as to correspond to the fact that the inclination of the upper inclined surface 26a of the surface protrusion 26 is greater than the inclination of the lower inclined surface 26b.

[0174] In addition, Figure 12 as well as Figure 13 Only the outer surfaces of the first slider 7 and the second slider 8 are shown in the diagram; therefore, only the first recess 26x and the second recess 26y of the outer surface protrusion forming portion 26z that forms the outer surface protrusion 26 are described. However, the first slider 7 and the second slider 8 have a front-back symmetrical shape, and a back-side protrusion forming portion forming the back side protrusion 27 is provided on the back side of the first slider 7 and the second slider 8. The back-side protrusion forming portion is composed of a recess (not shown) symmetrically arranged with the front and back surfaces of the first recess 26x and a recess (not shown) symmetrically arranged with the front and back surfaces of the second recess 26y. During mold closing, these two recesses (not shown) meet vertically and form the back-side protrusion forming portion for forming the back side protrusion 27. Detailed structures of the back-side protrusion forming portion are omitted because the description of the first recess 26x and the second recess 26y of the outer surface protrusion forming portion 26z is applicable.

[0175] Additionally, a gate 92 is formed on the first and second mating surfaces 73a and 83a of the first and second side forming portions 73 and 83. The gate 92 extends in the left-right direction, and the shapes of the inlet and outlet portions of the molten resin in the gate 92 are irregular (in the illustrated example, the diameter of the inlet portion is larger than that of the outlet portion).

[0176] With the injection molding mold closed, the movable mold 6 is connected to the fixed mold 5, and the first sliding body 72 of the first sliding member 7, which is in a state of moving upward (UP), is connected to the fixed mold 5. The second sliding member 8, which is in a state of moving downward (DN), is connected to the first sliding member 7. In addition, by connecting the first and second sliding members 7 and 8, a space portion 56s for the joining wall is formed by the first sliding member 7 and the second sliding member 8, which corresponds to the shape of the joining wall 56. Furthermore, the space portion 56s for the joining wall is a space portion that corresponds to the shape of the groove closing portion 56a and the hole closing portion 56b of the joining wall 56, and is a closed space portion in the cavity 91 that corresponds to the shape of the portion that closes both the lower part of the grooved 61 side of the insert hole 25 and the lower part of the grooved 61.

[0177] According to the above-described method for manufacturing the socket 21, the socket 21 is obtained by injection molding using a fixed mold 5, a movable mold 6 that is reciprocally movable relative to the fixed mold 5 in the front-back direction, and first and second sliding members 7 and 8 that are reciprocally movable relative to the fixed mold 5 in the vertical direction. A protrusion forming portion 26z for forming protrusions 26 and 27 is formed by the mating of a first recess 26x recessed in the first sliding member 7 and a second recess 26y recessed in the second sliding member 8. The first sliding member 7 has an inclined surface forming portion 29x for forming an inclined surface 29. The first sliding member 7 can reciprocate in a direction inclined relative to the vertical direction at an inclination angle α3 that is the same as the inclination angle α1 of the inclined surface 29. The second sliding member 8 can reciprocate in a direction parallel to the vertical direction.

[0178] According to this structure, protrusions 26 and 27 and inclined surfaces 29 can be provided on the inner surfaces 25a and 25b of the insertion hole 25 of the socket 21 by injection molding.

[0179] In addition, the first sliding member 7 and the second sliding member 8 have a first running surface 25yc and a second running surface 25zc that run in the left and right directions, and the first running surface 25yc and the second running surface 25zc are inclined to the first side L in the left and right directions as they face downwards. The inclination angle β of the first running surface 25yc and the second running surface 25zc relative to the up and down directions is larger than the inclination angle α3 of the reciprocating movement direction of the first sliding member 7 (β>α3).

[0180] This structure prevents the front end (first front end 25yb) of the tilted first slider 7 from colliding with the second slider 8, ensuring reliable mating of the first mating surface 25yc and the second mating surface 25zc. Furthermore, to prevent poor molding, the portions of the first mating surface 25yc, the second mating surface 25zc, the tapered surfaces of the first recess 26x and the second recess 26y that abut against each other during mold closing need to be in reliable contact without gaps. In this respect, if the tilt angle β of the first mating surface 25yc and the second mating surface 25zc relative to the vertical direction is equal to the tilt angle α3 of the reciprocating movement direction of the first slider 7 (β=α3), when shape errors or insertion errors occur in the first slider 7 or the second slider 8, contact at undesirable locations may create gaps, leading to poor molding; therefore, this is not preferable.

[0181] The first slider 7 has an inclination angle α3 in the direction of downward inclination towards the first side (left side L) in the left-right direction, and can reciprocate in the vertical direction, and mates with the second slider 8. The inclination angle α3 can also be described as the angle of upward inclination towards the second side (right side R) in the left-right direction. Therefore, during mold closing, the first slider 7 applies force towards the second side (right side R) which is the direction away from the second slider 8, and a gap may be formed between it and the first and second sliders 7 and 8.

[0182] To prevent the formation of gaps between the first and second sliding members 7 and 8, the first mating surface 73a of the first sliding member 7 and the second mating surface 83a of the second sliding member 8 are inclined upwards towards the first side (left side L) in the left-right direction. In this way, by making the first mating surface 73a and the second mating surface 83a contact at an inclination, the first sliding member 7 is prevented from moving to the second side (right side R) during mold closing, thus preventing poor molding.

[0183] Figure 14 yes Figure 13 The XIV-XIV cross-section. (See diagram.) Figure 14 As shown, the first slider 7 and the second slider 8 have a first mold abutment surface 71a and a second mold abutment surface 81a that abut against a movable mold (not shown) when the mold is closed. In the illustrated example, the first mold abutment surface 71a is provided on the lower surface F of the first base portion 71 of the first slider 7, and the second mold abutment surface 81a is provided on the upper surface F of the second base portion 81 of the second slider 8.

[0184] The first mold abutment surface 71a slopes downwards towards the back side (B) but not to the left or right. Similarly, the second mold abutment surface 81a slopes upwards towards the back side (B) but not to the left or right. Therefore, the components of the normals 71b and 81b, which are orthogonal to the first mold abutment surface 71a and the second mold abutment surface 81a respectively, only have components in the front / back direction (F, B) and the vertical direction (UP, DN), and do not have components in the left / right direction (L, R).

[0185] During mold closing, the movable mold (not shown) abuts against the first mold abutment surface 71a and the second mold abutment surface 81a from its surface side F, applying forces f1 and f2. Since these forces f1 and f2 act along normals 71b and 81b respectively, they only have components in the surface-to-back direction (F, B) and the vertical direction (UP, DN), and no component in the horizontal direction (L, R). Therefore, for the first and second sliding members 7 and 8, no force is applied from the movable mold in the horizontal direction (L, R) during mold closing, thus preventing the first and second sliding members 7 and 8 from separating in the horizontal direction and causing molding defects.

[0186] Furthermore, the present invention is not limited to the above-described embodiments, and appropriate changes and improvements may be made within the scope of implementation.

[0187] In the above embodiments, the tilt angles α1, α2, and α3 are approximately 8°, but are not limited to 8°; for example, they can be appropriately varied within the range of 3° to 13°. Furthermore, the tilt angle β is not limited to approximately 9°; as long as α < β, it can be appropriately varied within the range of 4° to 14°.

[0188] Figure 15 This is a front view of the first separated insert in the modified example, viewed from the surface side. (Example) Figure 15 As shown, the left side 11d (side of the first side L) of the front end (lower end) of the insert 11 of the first separating insert portion 10 constituting the modified example tilts to the right (second side R) as it faces downward (DN), which is consistent with... Figure 5A The insert 11 shown is different. Figure 15 The left side 11d of the insertion rod 11 is tilted at an angle γ relative to the vertical direction, for example, 3°. Additionally, Figure 5A The left side of the front end (lower end) of the shown insert 11 is parallel to the vertical direction and does not tilt to the right.

[0189] Figure 15 In the modified example shown, the right side 11f of the front end (lower end) of the insert 11 tilts to the left as it faces downwards, but the shape of this right side 11f is similar to... Figure 5A The insert rod 11 shown is the same.

[0190] Figure 16 It means Figure 15 The diagram shows the state in which the plug is fully inserted relative to the plug hole of the socket, as illustrated in the modified example. Additionally, in... Figure 16 The diagram of the base rod 21b is omitted. If the insert rod 11 is inserted into the insert rod hole 25, it abuts against the inclined surface 29 via the insert rod 11, extending towards the insertion angle θ (refer to...). Figure 9C The direction of decreasing torque (clockwise in the diagram) imparts a rotational torque. Then, when the insertion of the insert 11 is complete, as... Figure 16 As shown, when the insertion of the insertion rod 11 relative to the insertion rod hole 25 is completed, the left side 11d of the insertion rod 11 is parallel to the vertical direction by abutting along the groove 61.

[0191] Here, since the left side 11d of the insert bar 11 in this modified example is an inclined surface with an inclination angle γ, when the left side 11d is parallel to the vertical direction, the insert bar 11 rotates only by an angle γ to the right (towards the seat bar 21b, not shown) relative to the vertical direction. Therefore, by setting the inclination angle γ on the left side 11d, the rotational torque of the insert bar 11 increases, and the force that pushes the zipper head 40 upward UP by pressing the tapered surface 45a of the guide post 45 of the zipper head 40 increases. As a result, the protrusion 11a (half-chain tooth) of the insert bar 11 and the seat bar 21b can be engaged more reliably, and the protrusion 11a of the insert bar 11 and the first chain tooth 32A on the side of the second zipper chain 30B can be approximately engaged.

[0192] As stated above, the following matters are disclosed in this specification.

[0193] [1] A zipper comprising:

[0194] A pair of first and second zipper teeth on the left and right (30A, 30B);

[0195] At least one zipper pull (40) for opening and closing between the first and second zipper teeth (30A, 30B); and

[0196] A separate insert (1) is disposed at the lower end of the long side of the first and second zipper teeth (30A, 30B), wherein the zipper is characterized in that...

[0197] The separate insert (1) has the following features:

[0198] A first separating insert (10) is disposed on the first zipper tooth tape (30A); and

[0199] The second separating insert (20) is disposed on the second zipper tooth tape (30B) and can be connected to and disconnected from the first separating insert (10).

[0200] The first separating insert (10) includes an insert (11) disposed on the inner edge side of the first zipper tooth tape (30A) in the width direction.

[0201] The second separation insert (20) includes a socket (21) disposed on the inner edge side of the second zipper tooth tape (30B) in the width direction.

[0202] The socket (21) has a plug hole (25) that is open at the top (UP) and allows the plug (11) to be inserted and removed in the direction of the long side.

[0203] A recess (16, 17) is provided on at least one of the surface (11b) and the back surface (11c) of the insert (11).

[0204] At least one of the surface side (25a) and the back side side (25b) of the socket (21) that forms the insertion hole (25) and is opposite to the surface (11b) and the back side (11c) of the insertion rod (11) is provided with a protrusion (26, 27) that can engage with the recess (16, 17).

[0205] In the left-right direction, when the side with the first zipper tooth (30A) is designated as the first side (L) and the side with the second zipper tooth (30B) is designated as the second side (R),

[0206] The protrusions (26, 27) tilt to the first side (L) in the left-right direction as they face downward (DN).

[0207] On the side surface (25c) of the second side (R) in the left-right direction of the inner surface (25a, 25b, 25c, 25d) of the socket (21) that forms the plug hole (25), an inclined surface (29) is provided that is inclined to the first side (L) in the left-right direction as it faces downward.

[0208] [2] According to the zipper described in [1],

[0209] When the insert (11) is inserted into the insert hole (25), the insert (11) abuts against the inclined surface (29), thereby imparting a rotational torque to the insert (11) in the direction where the insertion angle (θ) decreases.

[0210] The insert (11), which rotates by the rotational torque, presses the conical surface (45a) of the guide post (45) of the pull head (40) upward, pushing the pull head (40) upward.

[0211] [3] According to the zipper described in [1] or [2],

[0212] The tilt angle (α2) of the protrusions (26, 27) relative to the vertical direction is the same as the tilt angle (α1) of the inclined surface (29) of the insertion hole (25) relative to the vertical direction.

[0213] [4] The zipper according to any one of [1] to [3],

[0214] The recesses (16, 17) are respectively provided on the surface (11b) and the back surface (11c) of the insert (11).

[0215] The protrusions (26, 27) are respectively provided on the front side (25a) and the back side (25b) of the plug hole (25) of the socket (21).

[0216] [5] The zipper according to any one of [1] to [4],

[0217] The protrusions (26, 27) are located between the upper and lower ends of the inclined surface (29) in the vertical direction.

[0218] [6] The zipper according to any one of [1] to [5],

[0219] The side (11d) of the first side (L) of the lower end of the insert (11) tilts toward the second side (R) as it faces downward (DN).

[0220] [7] A method for manufacturing a socket (21) for a zipper insert (1), wherein:

[0221] In the socket (21), at least one of the inner surface (25a, 25b) of the plug hole (25) for inserting and removing the plug (11), the front side (25a), and the back side (25b) is provided with a protrusion (26, 27).

[0222] In the left-right direction, when the side with the plug (11) is designated as the first side (L) and the side with the socket (21) is designated as the second side (R),

[0223] The protrusions (26, 27) tilt downwards and to the first side (L) in the left-right direction.

[0224] On the second side (25c) in the left-right direction of the inner surface (25a, 25b, 25c, 25d) of the socket (21) constituting the insertion hole (25), an inclined surface (29) is provided that is inclined to the first side (L) in the left-right direction as it faces downward. The socket (21) is obtained by injection molding using a fixed mold (5), a movable mold that is reciprocating in the front-back direction relative to the fixed mold (5), and first and second sliding members (7, 8) that are reciprocating in the vertical direction relative to the fixed mold (5).

[0225] By merging the first recess (26x) in the first sliding member (7) and the second recess (26y) in the second sliding member (8), a protrusion forming portion (26z) for forming the protrusions (26, 27) is formed.

[0226] The first slider (7) has an inclined surface forming portion (29x) for forming the inclined surface (29).

[0227] The first slider (7) is capable of reciprocating in a direction inclined relative to the vertical direction at an angle (α3) that is the same as the angle (α1) of the inclined surface (29).

[0228] The second slider (8) is capable of reciprocating in a direction parallel to the vertical direction.

[0229] [8] The method for manufacturing a socket for a zipper insert according to [7],

[0230] The first sliding member (7) and the second sliding member (8) have a first running surface (25yc) and a second running surface (25zc) that run in the left-right direction.

[0231] The first running surface (25yc) and the second running surface (25zc) are inclined to the first side (L) in the left-right direction as they face downwards.

[0232] The first running surface (25yc) and the second running surface (25zc) have an inclination angle (β) relative to the vertical direction that is greater than the inclination angle (α3) of the reciprocating movement direction of the first sliding member (7).

[0233] [9] The method for manufacturing a socket for a zipper insert according to [7] or [8],

[0234] The first slider (7) and the second slider (8) have a first mating surface (73a) and a second mating surface (83a) that are mated in the vertical direction.

[0235] The first mating surface (73a) and the second mating surface (83a) are inclined upwards toward the first side (L) in the left-right direction.

[0236]

[10] A method for manufacturing a socket for a zipper insert according to any one of [7] to [9],

[0237] The first sliding member (7) and the second sliding member (8) have a first mold abutting surface (71a) and a second mold abutting surface (81a) that abut against the movable mold when the mold is closed.

[0238] The components of the normals (71b, 81b) of the first mold abutment surface (71a) and the second mold abutment surface (81a) only have components in the front and back directions and the up and down directions, and do not have components in the left and right directions.

[0239] Various embodiments have been described above with reference to the accompanying drawings, but the present invention is certainly not limited to the examples described herein. Those skilled in the art will obviously be able to conceive of various modifications or alterations within the scope of the claims, which are also within the technical scope of the present invention. Furthermore, the constituent elements in the above embodiments can be arbitrarily combined without departing from the spirit of the invention.

Claims

1. A zipper, comprising: A pair of first and second zipper teeth on the left and right (30A, 30B); At least one zipper pull (40) for opening and closing between the first and second zipper teeth (30A, 30B); and A separate insert (1) is disposed at the lower end of the long side of the first and second zipper teeth (30A, 30B), wherein the zipper is characterized in that... The separate insert (1) has the following features: A first separating insert (10) is disposed on the first zipper tooth tape (30A); and The second separating insert (20) is disposed on the second zipper tooth strip (30B) and can be connected to and disconnected from the first separating insert (10). The first separating insert (10) includes an insert (11) disposed on the inner edge side of the first zipper tooth tape (30A) in the width direction. The second separation insert (20) includes a socket (21) disposed on the inner edge side of the second zipper tooth tape (30B) in the width direction. The socket (21) has a pin hole (25) that is open at the top and allows the pin (11) to be inserted and removed along its long side. A recess (16, 17) is provided on at least one of the surface (11b) and the back surface (11c) of the insert (11). At least one of the surface side (25a) and the back side side (25b) of the socket (21) that forms the insertion hole (25) and is opposite to the surface (11b) and the back side (11c) of the insertion rod (11) is provided with a protrusion (26, 27) that can engage with the recess (16, 17). In the left-right direction, when the side with the first zipper tooth (30A) is designated as the first side (L) and the side with the second zipper tooth (30B) is designated as the second side (R), The protrusions (26, 27) tilt to the first side (L) in the left-right direction as they face downward (DN). On the side surface (25c) of the second side (R) in the left-right direction of the inner surface (25a, 25b, 25c, 25d) of the socket (21) that forms the plug hole (25), an inclined surface (29) is provided that is inclined to the first side (L) in the left-right direction as it faces downward.

2. The zipper according to claim 1, characterized in that, When the insert (11) is inserted into the insert hole (25), the insert (11) abuts against the inclined surface (29), thereby imparting a rotational torque to the insert (11) in the direction where the insertion angle (θ) decreases. The insert (11), which rotates by the rotational torque, presses the conical surface (45a) of the guide post (45) of the pull head (40) upward, pushing the pull head (40) upward.

3. The zipper according to claim 1 or 2, characterized in that, The tilt angle (α2) of the protrusions (26, 27) relative to the vertical direction is the same as the tilt angle (α1) of the inclined surface (29) of the insertion hole (25) relative to the vertical direction.

4. The zipper according to any one of claims 1 to 3, characterized in that, The recesses (16, 17) are respectively provided on the surface (11b) and the back surface (11c) of the insert (11). The protrusions (26, 27) are respectively provided on the front side (25a) and the back side (25b) of the plug hole (25) of the socket (21).

5. The zipper according to any one of claims 1 to 4, characterized in that, The protrusions (26, 27) are located between the upper and lower ends of the inclined surface (29) in the vertical direction.

6. The zipper according to any one of claims 1 to 5, characterized in that, The side (11d) of the first side (L) of the lower end of the insert (11) tilts toward the second side (R) as it faces downward (DN).

7. A method for manufacturing a socket (21) for a zipper insert (1), wherein, In the socket (21), at least one of the inner surface (25a, 25b) of the plug hole (25) for inserting and removing the plug (11), the front side (25a), and the back side (25b) is provided with a protrusion (26, 27). In the left-right direction, when the side with the plug (11) is designated as the first side (L) and the side with the socket (21) is designated as the second side (R), The protrusions (26, 27) tilt downwards and to the first side (L) in the left-right direction. On the second side (25c) in the left-right direction of the inner surface (25a, 25b, 25c, 25d) of the socket (21) constituting the insertion hole (25), an inclined surface (29) is provided that is inclined to the first side (L) in the left-right direction as it faces downward. The socket (21) is obtained by injection molding using a fixed mold (5), a movable mold that is reciprocating in the front-back direction relative to the fixed mold (5), and first and second sliding members (7, 8) that are reciprocating in the vertical direction relative to the fixed mold (5). By merging the first recess (26x) in the first sliding member (7) and the second recess (26y) in the second sliding member (8), a protrusion forming portion (26z) for forming the protrusions (26, 27) is formed. The first slider (7) has an inclined surface forming portion (29x) for forming the inclined surface (29). The first slider (7) is capable of reciprocating in a direction inclined relative to the vertical direction at an angle (α3) that is the same as the angle (α1) of the inclined surface (29). The second slider (8) is capable of reciprocating in a direction parallel to the vertical direction.

8. The method for manufacturing a socket for a zipper insert according to claim 7, characterized in that, The first sliding member (7) and the second sliding member (8) have a first running surface (25yc) and a second running surface (25zc) that run in the left-right direction. The first running surface (25yc) and the second running surface (25zc) are inclined to the first side (L) in the left-right direction as they face downwards. The first running surface (25yc) and the second running surface (25zc) have an inclination angle (β) relative to the vertical direction that is greater than the inclination angle (α3) of the reciprocating movement direction of the first sliding member (7).

9. The method for manufacturing a socket for a zipper insert according to claim 7 or 8, characterized in that, The first slider (7) and the second slider (8) have a first mating surface (73a) and a second mating surface (83a) that are mated in the vertical direction. The first mating surface (73a) and the second mating surface (83a) are inclined upwards toward the first side (L) in the left-right direction.

10. A method for manufacturing a socket for a zipper insert according to any one of claims 7 to 9, characterized in that, The first sliding member (7) and the second sliding member (8) have a first mold abutting surface (71a) and a second mold abutting surface (81a) that abut against the movable mold when the mold is closed. The components of the normals (71b, 81b) of the first mold abutment surface (71a) and the second mold abutment surface (81a) only have components in the front and back directions and the up and down directions, and do not have components in the left and right directions.

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