Stopper member, zipper, mold, and method for manufacturing stopper member

Abstract

The stopper member for a zipper tape according to the present application includes a magnetic body that is substantially cylindrical and extends in the up-down direction, and a base in which the magnetic body is embedded, the base including an upper portion that is substantially circular and covers the upper surface of the magnetic body, a lower portion that is substantially circular and covers the lower surface of the magnetic body, and an outer peripheral portion that is substantially cylindrical and covers the outer peripheral surface of the magnetic body, at least three lower recesses being formed in the lower portion of the base and recessed toward the upper side, and at least one outer peripheral recess being formed in the outer peripheral portion of the base and recessed toward the inner diameter side.

Description

Technical Field

[0001] This invention relates to a stop-code component, a zipper, a mold, and a method for manufacturing the stop-code component. Background Technology

[0002] There has always been a demand for simpler zipper opening and closing. Patent Document 1 discloses a zipper stop mechanism that utilizes magnets to simplify the operation of the stop mechanism. In Patent Document 1, magnets are embedded in the base of each pair of stop mechanism components. When the bases of the pair of stop mechanism components overlap, a magnetic attraction is generated between them, causing one base to rotate relative to the other. This reduces the burden of operating the stop mechanism required to close the zipper.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: WO2022 / 137471

[0006] Here, in manufacturing the stop code component of Patent Document 1, the stop code component is injection molded by embedding a magnetic body, so the injection molding process includes at least two injection molding processes. In the first injection molding, a first region of at least one surface of the magnetic body is covered by a first resin portion, and in the second injection molding, a second region of at least one surface of the magnetic body is covered by a second resin portion. According to this manufacturing method, it is possible to provide a structure that maintains the magnetic body with excellent appearance or strength by covering the entire surface of the magnetic body, but the need for two-stage injection molding may increase costs. Summary of the Invention

[0007] The present invention was made in view of the above-mentioned problems, and its object is to provide a method for manufacturing a stop-code component, a zipper, a mold, and a stop-code component, which can achieve a magnetic retention structure more cost-effectively while maintaining strength or aesthetics.

[0008] To solve the above problems, the present invention is implemented through the following structure.

[0009] [1] A stop-code component, said stop-code components 20, 40 being used for zipper teeth 2a, 2b.

[0010] The stop code components 20 and 40 include:

[0011] Magnetic bodies 30 and 50 are roughly cylindrical and extend vertically; and

[0012] The bases 21 and 41 are embedded with the magnetic bodies 30 and 50.

[0013] The bases 21 and 41 include:

[0014] The upper parts 24 and 44 are roughly circular and cover the upper surfaces 31 and 51 of the magnetic bodies 30 and 50.

[0015] The lower parts 25 and 45 are generally circular plates, covering the lower surfaces 32 and 52 of the magnetic bodies 30 and 50; and

[0016] The outer peripheral portions 26 and 46 are generally cylindrical and cover the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50.

[0017] At least three lower recesses 25a and 45a are formed in the lower portions 25 and 45 of the bases 21 and 41, and at least one outer peripheral recess 26a and 46a is formed in the outer peripheral portions 26 and 46 of the bases 21 and 41, which are recessed toward the inner diameter side.

[0018] [2] A zipper, the zipper 1 comprising:

[0019] A pair of zipper teeth straps 2a and 2b; and

[0020] The zipper pull, used to open and close the pair of zipper teeth 2a and 2b,

[0021] On the inner edge of each of the pair of zipper tooth strips 2a and 2b in the width direction, stop code members 20 and 40 described in any one of [1] to

[13] are provided. Through the magnetic attraction between the magnetic body 30 of the stop code member 20 of one zipper tooth strip 2a and the magnetic body 50 of the stop code member 40 of the other zipper tooth strip 2b, the pair of bases 21 and 41 are stacked one on the other, so that the pair of stop code members 20 and 40 can be combined with each other.

[0022] [3] A mold, said molds 60 and 70 being used to manufacture stop parts 20 and 40 for zipper teeth straps 2a and 2b.

[0023] The stop code components 20 and 40 include:

[0024] Magnetic bodies 30 and 50 are roughly cylindrical and extend vertically; and

[0025] The bases 21 and 41 are embedded with the magnetic bodies 30 and 50.

[0026] The molds 60 and 70 include upper molds 60A and 70A and lower molds 60B and 70B.

[0027] The lower molds 60B and 70B have mounting slots 62 and 72, which are generally cylindrical and can accommodate the magnetic bodies 30 and 50.

[0028] The configuration slots 62 and 72 of the lower molds 60B and 70B include:

[0029] The lower parts 65 and 75 cover the lower surfaces 32 and 52 of the magnetic bodies 30 and 50; and

[0030] The outer peripheral portions 66 and 76 cover the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50.

[0031] At least three lower protrusions 65a and 75a are formed in the lower portions 65 and 75 of the configuration grooves 62 and 72, and at least one outer peripheral protrusion 66a and 76a is formed in the outer peripheral portions 66 and 76 of the configuration grooves 62 and 72, protruding towards the inner diameter side.

[0032] [4] A method for manufacturing a stop code component, wherein the stop code components 20 and 40 are injection molded using the molds 60 and 70 described in [3].

[0033] Invention Effects

[0034] According to the present invention, a method for manufacturing a stop-code component, a zipper, a mold, and a stop-code component can be provided, which can achieve a magnetic retention structure more cost-effectively while maintaining strength or aesthetics. Attached Figure Description

[0035] Figure 1 This is a front view of the zipper according to an embodiment of the present invention, showing the connection between the base bar and the insert bar.

[0036] Figure 2 This is a front view of the zipper according to an embodiment of the present invention, showing the separation of the base bar and the insert bar.

[0037] Figure 3 This is a top view of the base rod.

[0038] Figure 4 This is a bottom view of the base.

[0039] Figure 5 It is a bottom view of a section of the base rod.

[0040] Figure 6 yes Figure 3 and Figure 4 Sectional view VI-VI.

[0041] Figure 7 This is a top view of the insertion rod.

[0042] Figure 8 This is a bottom view of the insertion rod.

[0043] Figure 9 It is a bottom view of a portion of the insertion rod.

[0044] Figure 10 yes Figure 7 and Figure 8 XX sectional view.

[0045] Figure 11 This is a perspective view of the upper mold used to manufacture the base rod, viewed from below.

[0046] Figure 12 This is a perspective view of the lower mold used to manufacture the base rod, viewed from above.

[0047] Figure 13 It means equivalent to Figure 6 The section shown is a cross-sectional view of the part that will be used to manufacture the upper and lower molds of the base rod in the closed state.

[0048] Figure 14 This is a perspective view of the upper mold used to manufacture the insert rod, viewed from below.

[0049] Figure 15 This is a three-dimensional view of the lower mold used to manufacture the insert rod, viewed from above.

[0050] Figure 16 It means equivalent to Figure 10 The section is a cross-sectional view of the upper and lower molds used to manufacture the insert rod, in the closed state.

[0051] Explanation of reference numerals in the attached figures

[0052] 1. Zipper; 2a, 2b. Zipper teeth and straps

[0053] 3a, 3b zipper tapes; 4a, 4b zipper teeth.

[0054] 4b' Fake Zipper Teeth 10 Slipper Head

[0055] 11 Upper wingplate 13 Lower wingplate

[0056] 15, 15 front mouth, 17 back mouth

[0057] 20. Seat bar (stop component) 21. Base

[0058] 22 Axial protrusion 23 Insertion portion

[0059] 23a upper plate 23b lower plate

[0060] 23c Insertion space 24 Upper part

[0061] 24a upper recess 25 lower

[0062] 25a Lower concave portion 26 Peripheral portion

[0063] 26a Outer peripheral recess; 26b Groove bottom (sloping surface)

[0064] 26R inner diameter, 27p, 27q, 27r sliding parts

[0065] 28 Rod section 30 Magnetic body

[0066] 31 Upper surface 32 Lower surface

[0067] 33 Outer circumference 33R outer diameter

[0068] 40 Insert rod (stop code component) 41 Base

[0069] 42 Recessed portion 42a bottom surface

[0070] 43 Insertion part 44 Upper part

[0071] 44a upper recess 45 lower

[0072] 45a lower recess 46 outer peripheral part

[0073] 46a Outer peripheral recess; 46b Groove bottom (sloping surface)

[0074] 46R inner diameter 47 outer peripheral wall

[0075] 47p, 47q, 47r inclined surfaces 48 bar section

[0076] 50 Magnetic body 51 Upper surface

[0077] 52 Lower surface 53 Outer peripheral surface

[0078] 53R outer diameter 60mm base rod mold (mold)

[0079] 60A Upper die for base rod; 60B Lower die for base rod.

[0080] 60C gate 61 base recess

[0081] 61A Upper mold base recess 61B Lower mold base recess

[0082] 62 Configuration slot 63 Insertion recess

[0083] 63A Upper die insertion recess; 63B Lower die insertion recess

[0084] 64 upper part 64a upper convex part

[0085] 65 lower part 65a lower convex part

[0086] 66 Peripheral portion 66a Peripheral convex portion

[0087] 66R inner diameter 68 rod concave part

[0088] 68A Recessed part of upper mold rod 68B Recessed part of lower mold rod

[0089] 70 insert mold (mold) 70A insert upper mold (upper mold)

[0090] 70B lower mold (slotted bar) 70C gate

[0091] 71 Base recess 71A Upper mold base recess

[0092] 71B Lower mold base recess 72 placement slot

[0093] 73 Insertion Recess 73A Upper Mold Insertion Recess

[0094] 73B Lower die insertion recess 74 Upper part

[0095] 74a upper convex part 75 lower part

[0096] 75a Lower convex part 76 Peripheral part

[0097] 76a Outer peripheral convex portion 76R Inner diameter

[0098] 78 Rod concave part 78A Upper mold rod concave part

[0099] 78B Lower Die Rod Recess AX1, AX2 Magnetic Shafts (Central Shaft) Detailed Implementation

[0100] Hereinafter, based on the accompanying drawings, the manufacturing methods of the stop-code component, zipper, mold, and stop-code component according to various embodiments of the present invention will be described in detail.

[0101] Furthermore, in this instruction manual, "front and back direction" refers to the sliding direction of the zipper head, the length direction of the zipper or zipper teeth, and the insertion and removal direction of the push bar relative to the zipper head or base bar. "Front and back direction" is... Figure 1 The up and down direction. In the "forward and backward direction," the direction in which the pull tab slides to engage the left and right chain teeth is designated as "forward," and the direction in which the pull tab slides to disengage the left and right chain teeth is designated as "backward." "Forward" is... Figure 1 The direction above, "behind" is Figure 1 The downward direction.

[0102] Additionally, "left-right direction" refers to the direction in which a pair of chain teeth are aligned side-by-side, which is perpendicular to the sliding direction of the zipper pull. In other words, it can be described as the width direction of the zipper, zipper teeth, chain strap, chain teeth, insert bar, and base bar. "Left-right direction" is... Figure 1 The left and right directions.

[0103] Furthermore, the "vertical direction" refers to the direction orthogonal to the front-back and left-right directions; it can also be described as the thickness direction of the zipper, zipper teeth, chain teeth, inserts, and base bars. The "vertical direction" is... Figure 1 The depth direction of the paper.

[0104] Hereinafter, various embodiments and features will be described with reference to the accompanying drawings. Those skilled in the art will be able to combine the various embodiments and / or features without excessive explanation, and will also understand the synergistic effects of such combinations. Repeated descriptions between embodiments are generally omitted. The accompanying drawings are primarily for the purpose of describing the invention, and therefore have been simplified for ease of drawing. The features are not only effective for the stop-mark component, mold, and method of manufacturing the stop-mark component disclosed in this application, but can be understood as general features applicable to various other stop-mark components, molds, and methods of manufacturing the stop-mark component not disclosed in this specification.

[0105] Figure 1 This is a front view of the zipper according to an embodiment of the present invention, showing the connection between the base bar and the insert bar. Figure 2 This is a front view of the zipper according to an embodiment of the present invention, showing the separation of the base bar and the insert bar.

[0106] like Figure 1 and Figure 2 As shown, the zipper 1 includes: a pair of left and right zipper teeth 2a and 2b; and a zipper pull 10 for opening and closing the zipper 1. The zipper 1 is closed by moving the zipper pull 10 forward, engaging the left and right zipper teeth 2a and 2b. The zipper 1 is opened by moving the zipper pull 10 backward, disengaging the left and right zipper teeth 2a and 2b.

[0107] The zipper pull 10 includes: an upper wing plate 11; a lower wing plate 13; and a connecting post that connects the top ends of the upper wing plate 11 and the lower wing plate 13 in a vertical direction. A pair of front openings 15, 15 are provided on the left and right sides of the connecting post in the zipper pull 10. A rear opening 17 is provided on the opposite side (rear side) of the pair of front openings 15, 15. The insertion part 23 of the seat bar 20 (described later) is inserted into the zipper pull 10 via the rear opening 17. The left and right side edges of the upper wing plate 11 are each provided with a flange portion that protrudes downwards and extends in a front-rear direction. The left and right side edges of the lower wing plate 13 are each provided with a flange portion that protrudes upwards and extends in a front-rear direction. Furthermore, zipper tapes 3a, 3b are inserted into the vertical gap between the pair of upper and lower flange portions on the left and right sides of the zipper pull 10. Additionally, the insertion part 43 of the insert bar 40 (described later) is inserted into the vertical gap between the upper and lower flange portions on the right side.

[0108] Zipper toothed belts 2a and 2b each include: a pair of left and right zipper belts 3a and 3b; multiple zipper teeth 4a and 4b, which are disposed on the inner edge of the width direction of each pair of left and right zipper belts 3a and 3b; and a base bar 20 and an insert bar 40, which are fixed to the inner edge of the width direction of each zipper belt 3a and 3b at a position adjacent to the rear zipper teeth 4a and 4b.

[0109] Zipper tapes 3a and 3b are elongated and flexible strips in the front-to-back direction, and are made of woven fabric, braided fabric, or a mixture thereof. Zipper teeth 4a and 4b are constructed to engage with opposing teeth, for example, resin or metal teeth, or spiral teeth made by winding monofilaments into a spiral shape. Zipper teeth 4a and 4b are installed on zipper tapes 3a and 3b by injection molding, riveting, sewing, or bonding. The illustrated zipper teeth 4a and 4b are resin teeth including a base, neck, and head, with the base fixed to the inner edge of the zipper tapes 3a and 3b in the width direction.

[0110] Figure 3 This is a top view of the base rod. Figure 4 This is a bottom view of the base. Figure 5 It is a bottom view of a section of the base rod. Figure 6 yes Figure 3 and Figure 4 Sectional view VI-VI. Figure 7 This is a top view of the insertion rod. Figure 8 This is a bottom view of the insertion rod. Figure 9 It is a bottom view of a portion of the insertion rod. Figure 10 yes Figure 7 and Figure 8 XX sectional view.

[0111] like Figures 3 to 10 As shown, the base bar 20 and the insert bar 40 constitute a pair of zipper stop components that can be separated and joined together. The base bar 20 and the insert bar 40 each include: bases 21 and 41; and insertion portions 23 and 43, which extend from the bases 21 and 41 toward the zipper teeth 4a and 4b, i.e., toward the front.

[0112] Magnetic bodies 30 and 50 (see reference) are embedded in each base 21 and 41. Figures 5 to 6 , Figures 9 to 10 The magnetic bodies 30 and 50 are generally cylindrical, extending in the vertical direction. In this embodiment, the magnetic bodies 30 and 50 are solid shapes without holes or the like.

[0113] Also refer to Figure 1 and Figure 2The insertion portion 23 of the seat bar 20 is inserted into the slider 10 via the rear opening 17. The insertion portion 43 of the insert bar 40 is inserted into the slider 10 via the vertical gap between the flange of the upper wing plate 11 and the flange of the lower wing plate 13. Therefore, the vertical thickness of the insertion portion 43 of the insert bar 40 is smaller than the vertical gap between the flange of the upper wing plate 11 and the flange of the lower wing plate 13.

[0114] like Figure 4 and Figure 6 As shown, the base 21 of the base rod 20 has a shaft-shaped protrusion 22 in which a magnetic body 30 is embedded. The shaft-shaped protrusion 22 is arranged to protrude downwards. Figure 7 and Figure 10 As shown, the base 41 of the insert 40 has a recess 42 on the bottom surface 42a where a magnetic body 50 is disposed. The axial protrusion 22 of the base 20 and the recess 42 of the insert 40 can be fitted together.

[0115] The magnetic bodies 30 and 50 embedded in the bases 21 and 41 of the base rod 20 and the insert rod 40 are permanent magnets obtained by magnetizing unmagnetized magnetic bodies. Hereinafter, the magnetic bodies 30 and 50 are sometimes referred to as permanent magnets 30 and 50. When the base 21 of the base rod 20 and the base 41 of the insert rod 40 are close in space (for example, the base 41 is positioned below the base 21), the bases 21 and 41 are stacked vertically due to the magnetic attraction generated between the permanent magnet 50 of the base 41 and the permanent magnet 30 of the base 21, and the axial protrusion 22 of the base 21 fits into the recess 42 of the base 41.

[0116] The permanent magnets 30 and 50 can be rare-earth magnets, such as neodymium magnets. The permanent magnets 30 and 50 each have magnetic axes AX1 and AX2, which are aligned with the central axes of the generally cylindrical magnetic bodies 30 and 50. Magnetic axes AX1 and AX2 are axes extending along the arrangement directions of the N and S poles of the permanent magnets, determined based on the magnetic field lines generated around the permanent magnets. Furthermore, the central axis AX1 of the magnetic body 30 is aligned with the central axis of the axial protrusion 22 of the base rod 20. Additionally, the central axis AX2 of the magnetic body 50 is aligned with the depth direction of the recess 42 of the insert rod 40.

[0117] The permanent magnets 30 and 50 include: upper surfaces 31 and 51 and lower surfaces 32 and 52; and outer peripheral surfaces 33 and 53 connecting the outer peripheries of the upper surfaces 31 and 51 and the lower surfaces 32 and 52. The upper surfaces 31 and 51 and the lower surfaces 32 and 52 are arranged orthogonally to the magnetic axes AX1 and AX2 and are generally planar. The outer peripheral surfaces 33 and 53 extend parallel to the magnetic axes AX1 and AX2 at a position relative to the outer diameter side of the magnetic axes AX1 and AX2, connecting the outer peripheries of the upper surfaces 31 and 51 and the outer peripheries of the lower surfaces 32 and 52.

[0118] like Figures 3 to 6 As shown, the base 21 of the base rod 20 includes: an upper portion 24, which is generally circular and covers the upper surface 31 of the magnetic body 30; a lower portion 25, which is generally circular and covers the lower surface 32 of the magnetic body 30; and an outer peripheral portion 26, which is generally cylindrical and covers the outer peripheral surface 33 of the magnetic body 30. The lower portion 25 and the outer peripheral portion 26 of the base 21 constitute the lower and outer peripheral portions of the axial protrusion 22. Sliding portions 27p, 27q, and 27r are provided on the outer peripheral portion of the base 21 of the base rod 20.

[0119] like Figures 7 to 10 As shown, the base 41 of the insert 40 includes: an upper portion 44, which is generally circular and covers the upper surface 51 of the magnetic body 50; a lower portion 45, which is generally circular and covers the lower surface 52 of the magnetic body 50; and an outer peripheral portion 46, which is generally cylindrical and covers the outer peripheral surface 53 of the magnetic body 50. The upper surface of the upper portion 44 of the base 41 forms the bottom surface 42a of the recess 42. Furthermore, the base 41 of the insert 40 has an outer peripheral wall 47 surrounding the recess 42, which is erected upwards. Inclined surfaces 47p, 47q, and 47r are provided on the outer peripheral wall 47. As described above, during the process of the axial protrusion 22 engaging with the recess 42 due to the magnetic attraction between the permanent magnets, the sliding parts 27p, 27q, 27r come into contact with the inclined surfaces 47p, 47q, 47r, and move downwards along the inclined surfaces 47p, 47q, 47r, thereby causing the base 41 to rotate relative to the base 21. It can be said that the magnetic attraction acting in the axial direction is converted into a rotational force around the axial direction.

[0120] like Figure 3 and Figure 6 As shown, in order to accommodate the insertion portion 43 of the insertion rod 40, the insertion portion 23 of the base rod 20 is configured to open towards the insertion rod 40 side (right side). The insertion portion 23 has an upper plate 23a and a lower plate 23b, and an insertion space 23c is defined between them. The insertion space 23c opens towards the insertion rod 40 side (right side). Furthermore, as... Figures 3 to 6 As shown, in the seat bar 20, a bar portion 28 is provided adjacent to the left side of the insertion portion 23 (the side opposite to the insert bar 40). A flange channel is defined between the insertion portion 23 and the bar portion 28 on both the upper and lower surfaces of the zipper tape 3a. The bar portion 28, like the insertion portion 23, extends forward from the base 21. The flange of the zipper pull 10 is inserted into the flange channel between the insertion portion 23 and the bar portion 28, facilitating the zipper pull 10 to remain on the insertion portion 23.

[0121] like Figures 7 to 10As shown, the insertion portion 43 of the insert bar 40 has a tapered insertion end that moves to the left away from the zipper tape 3b, allowing it to smoothly insert into the vertical gap between the upper and lower flanges on the right side of the zipper head 10. The pseudo-zipper teeth 4b' engage with the top of the insertion portion 43, allowing the zipper head 10 to smoothly move from the stop bar onto the zipper teeth 4a and 4b. A bar portion 48 is connected to the insertion portion 43 on the opposite side of the insertion end. The bar portion 48 is positioned adjacent to the right side of the insertion portion 43 (the side opposite to the base bar 20), protruding from both the upper and lower surfaces of the zipper tape 3b and colliding with the upper and lower flanges on the right side of the zipper head 10. The bar portion 48 determines the stopping position of the insertion portion 43 inserted into the zipper head 10.

[0122] like Figure 1 As shown, when the pull head 10 is at its rearmost position, i.e., when the insertion part 23 is inserted into the pull head 10, if the base 41 of the insert rod 40 is positioned below the base 21 of the base rod 20, a magnetic attraction is generated between the permanent magnets 30 and 50 of the base rod 20 and the insert rod 40. Corresponding to this magnetic attraction, the bases 21 and 41 are stacked vertically, and the axial protrusion 22 of the base 21 engages with the recess 42 of the base 41. During the engagement of the axial protrusion 22 with the recess 42, i.e., during the process of the bases 21 and 41 approaching each other along the axial direction, the sliding parts 27p, 27q, and 27r come into contact with the inclined surfaces 47p, 47q, and 47r, and the sliding parts 27p, 27q, and 27r move downward along the inclined surfaces 47p, 47q, and 47r. Correspondingly, the base 41 rotates counterclockwise relative to the base 21, and the insertion part 43 is inserted into the pull head 10 through the vertical gap between the upper and lower flanges on the right side. By advancing the pull head 10, the insertion part 43 is inserted into the insertion space 23c of the insertion part 23 (see reference). Figure 3 and Figure 6 Inside, the left and right seat bars 20 and insert bars 40 are engaged. As the zipper pull 10 advances further, the left and right zipper teeth 4a and 4b are engaged.

[0123] Sliding portions 27p, 27q, and 27r are arranged circumferentially relative to the magnetic axis AX1 of the permanent magnet 30. Similarly, inclined surfaces 47p, 47q, and 47r are arranged circumferentially relative to the magnetic axis AX2 of the permanent magnet 50. Each inclined surface 47p, 47q, and 47r is inclined in a manner corresponding to its circumferential extension relative to the magnetic axis AX2 of the permanent magnet 50. Corresponding to the magnetic attraction of the permanent magnets 30 and 50, the sliding portions 27p, 27q, and 27r slide (move downwards) on the inclined surfaces 47p, 47q, and 47r. By providing three sliding portions 27p, 27q, and 27r, rotational stability can be improved, but only one can be provided. The same applies to the inclined surfaces 47p, 47q, and 47r. Of course, it is also possible to omit the sliding portions and inclined surfaces and instead manually rotate the base 41 relative to the base 21. The permanent magnets 30 and 50 are arranged in such a way that their magnetic axes AX1 and AX2 coincide, thus the axial protrusion 22 and the recess 42 can be omitted.

[0124] like Figure 4 and Figure 6 As shown, at least three lower recesses 25a are formed on the lower part 25 of the base 21 of the base rod 20, and are recessed upwards. In this example, when viewed from above, the three lower recesses 25a are positioned overlapping the magnetic body 30. The three lower recesses 25a are arranged at approximately equal intervals relative to the central axis AX1 in the circumferential direction. The number of lower recesses 25a can be at least three, or more than four.

[0125] like Figure 8 and Figure 10 As shown, at least three lower recesses 45a are formed on the lower part 45 of the base 41 of the insert 40, recessed upwards. In this example, the three lower recesses 45a are positioned to overlap with the magnetic body 50 when viewed from above. The three lower recesses 45a are arranged at approximately equal intervals relative to the central axis AX2 in the circumferential direction. The number of lower recesses 45a can be at least three, or more than four.

[0126] The lower recesses 25a and 45a are tapered at the top, and their area, when viewed from above, gradually decreases as they approach the lower surfaces 32 and 52 of the magnetic bodies 30 and 50. In this example, the lower recesses 25a and 45a are circular when viewed from above, and the area of ​​this circle gradually decreases as it approaches the magnetic bodies 30 and 50. Thus, the lower recesses 25a and 45a are approximately hemispherical in shape with a top. Furthermore, as... Figure 6 and Figure 10As shown, the top (upper end) of the preferred lower recesses 25a and 45a is not a flat surface but a curved surface convex upwards. Therefore, even when the lower surfaces 32 and 52 of the magnetic bodies 30 and 50 are exposed through the top (upper end) of the lower recesses 25a and 45a, the exposed area can be minimized, resulting in an excellent appearance. Furthermore, the area covering the bases 21 and 41 of the magnetic bodies 30 and 50 can be increased, thereby improving strength and rigidity.

[0127] The lower surfaces 32 and 52 of the magnetic bodies 30 and 50 are exposed via at least one of the plurality of lower recesses 25a and 45a. As described later, the lower recesses 25a and 45a of the base rod 20 and the insert rod 40 are connected to the lower protrusions 65a and 75a of the base rod lower mold 60B and the insert rod lower mold 70B (see reference). Figures 12 to 13 and Figures 15-16 Correspondingly, during injection molding, the lower surfaces 32, 52 of the magnetic bodies 30, 50 are supported by at least one of the lower protrusions 65a, 75a of the lower mold 60B and the lower mold 70B, resulting in the lower surfaces 32, 52 of the magnetic bodies 30, 50 being exposed via at least one lower recess 25a, 45a in the manufactured rods 20 and 40.

[0128] like Figures 4 to 6 As shown, at least one peripheral recess 26a is formed on the outer periphery 26 of the base 21 of the base rod 20, recessed towards the inner diameter relative to the central axis AX1. The peripheral recess 26a is positioned to overlap with the magnetic body 30 when viewed radially. The number of peripheral recesses 26a can be at least one, or more than two. In this example, the three peripheral recesses 26a are arranged at approximately equal intervals relative to the central axis AX1 in the circumferential direction.

[0129] Figures 8 to 10 As shown, at least one peripheral recess 46a is formed on the outer periphery 46 of the base 41 of the insert 40, recessed towards the inner diameter relative to the central axis AX2. The peripheral recess 46a is positioned to overlap with the magnetic body 50 when viewed radially. The number of peripheral recesses 46a can be at least one, or more than two. In this example, the three peripheral recesses 46a are arranged at approximately equal intervals relative to the central axis AX2 in the circumferential direction.

[0130] In the base rod 20, the outer peripheral recess 26a and the lower recess 25a are arranged at different phases in the circumferential direction. Similarly, in the insert rod 40, the outer peripheral recess 46a and the lower recess 45a are arranged at different phases in the circumferential direction. In this example, when viewed from above, the outer peripheral recesses 26a and 46a are positioned at 0°, 4°, and 8° (240°) relative to the central axes AX1 and AX2, respectively, while the lower recesses 25a and 45a are positioned at 2° (60°), 6° (180°), and 10° (300°) relative to the central axes AX1 and AX2, respectively. Furthermore, 0° refers to the front relative to the central axes AX1 and AX2, and 6° (180°) refers to the rear relative to the central axes AX1 and AX2. By arranging the outer peripheral recesses 26a and 46a and the lower recesses 25a and 45a at different phases in the circumferential direction, it is possible to suppress the formation of thinner wall sections in the bases 21 and 41, thereby ensuring strength or rigidity.

[0131] The outer peripheral recesses 26a and 46a are tapered at the top, and their area, when viewed radially relative to the central axes AX1 and AX2, gradually decreases from the outer diameter side towards the inner diameter side, i.e., as they approach the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50. In this example, the radially viewed shape of the outer peripheral recesses 26a and 46a is rectangular, and the area of ​​this rectangle gradually decreases as it approaches the magnetic bodies 30 and 50. Furthermore, the vertically viewed shape of the outer peripheral recesses 26a and 46a is approximately semi-circular. Therefore, the outer peripheral recesses 26a and 46a are approximately semi-cylindrical in shape with a top on the inner diameter side. Moreover, because the vertically viewed shape is approximately semi-circular, the tops (inner diameter ends) of the outer peripheral recesses 26a and 46a, i.e., the groove bottoms 26b and 46b, are not planar but rather curved surfaces convex towards the inner diameter side. Therefore, even when the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are exposed through the top (inner diameter end) of the outer peripheral recesses 26a and 46a, i.e., the bottom of the grooves 26b and 46b, the exposed area can be kept small, resulting in an excellent appearance. In addition, the area of ​​the bases 21 and 41 covering the magnetic bodies 30 and 50 can be increased, thereby improving strength and rigidity.

[0132] The outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are exposed via at least one of the plurality of outer peripheral recesses 26a and 46a. As described later, the outer peripheral recesses 26a and 46a of the base rod 20 and the insert rod 40 are similar to the outer peripheral protrusions 66a and 76a of the lower mold of the base rod 60B and the lower mold of the insert rod 70B (see reference). Figures 12 to 13Corresponding to 15 to 16). Therefore, during injection molding, the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are supported by at least one of the outer peripheral protrusions 66a and 76a of the lower mold 60B and the lower mold 70B, resulting in the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 being exposed via at least one outer peripheral recess 26a and 46a in the molded products of the lower mold 20 and the lower mold 40.

[0133] like Figure 6 and Figure 10 As shown, the inner diameter ends of the outer peripheral recesses 26a and 46a, i.e., the groove bottoms 26b and 46b, are inclined surfaces whose inner diameters 26R and 46R gradually increase from bottom to top. Therefore, the placement of the magnetic bodies 30 and 50 during injection molding becomes easier. Furthermore, even when the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are exposed through the inner diameter ends of the outer peripheral recesses 26a and 46a, i.e., the groove bottoms 26b and 46b, the exposed area can be kept small, resulting in an excellent appearance.

[0134] Furthermore, the outer diameters 33R and 53R of the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are set to be smaller than the inner diameters 26R and 46R of the groove bottoms 26b and 46b of the outer peripheral recesses 26a and 46a (33R < 26R, 53R < 46R). As described above, the groove bottoms 26b and 46b are inclined surfaces that gradually increase in size from bottom to top, and their inner diameters 26R and 46R gradually increase from bottom to top. That is, the inner diameters 26R and 46R of the groove bottoms 26b and 46b are smallest at the lower ends of the groove bottoms 26b and 46b (the portions whose vertical positions coincide with the lower surfaces 32 and 52 of the magnetic bodies 30 and 50). The outer diameters 33R and 53R of the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are smaller than the inner diameters 26R and 46R of the lower ends of the groove bottoms 26b and 46b. By setting such a dimensional relationship, the magnetic bodies 30 and 50 can be reliably positioned during injection molding. Furthermore, it is preferable that the inner diameters 26R and 46R of the lower ends of the groove bottoms 26b and 46b are larger than the outer diameters 33R and 53R of the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50, preferably greater than 0 mm and less than 0.3 mm. By setting such a range of values, the magnetic bodies 30 and 50 can be reliably positioned during injection molding, and injection molding can be performed in a manner that minimizes the exposure of the outer surfaces of the magnetic bodies 30 and 50 to the outside at the portion with this dimensional difference.

[0135] like Figure 3 and Figure 6As shown, at least one upper recess 24a is formed on the upper part 24 of the base 21 of the base rod 20, and is recessed downwards. The upper recess 24a is positioned to overlap with the magnetic body 30 when viewed from above. In this example, the upper recess 24a is positioned at 6 o'clock (180°) behind the central axis AX1, and is arranged to overlap with the rear end of the magnetic body 30 when viewed from above. The number of upper recesses 24a can be at least one, or more than two. Furthermore, 6 o'clock (180°) refers to the rear position relative to the central axis AX1.

[0136] like Figure 7 and Figure 10 As shown, at least one upper recess 44a is formed on the upper part 44 of the base 41 of the insert 40, and is recessed downwards. The number of upper recesses 44a can be at least one, or more than two. In this example, four upper recesses 44a are arranged at positions overlapping with the magnetic body 30 when viewed from above, and are arranged so as to be circumferentially separated from each other relative to the central axis AX2. When viewed from above, the four upper recesses 44a are arranged at circumferential positions of 0°, 4°, 120°, 6°, and 8°. Furthermore, 0° refers to the front relative to the central axis AX2, and 6° (180°) refers to the rear relative to the central axis AX2.

[0137] The upper recess 44a of the insert 40 has a tapering shape at the tip, and its area, viewed from the top and bottom, gradually decreases as it approaches the upper surface 51 of the magnetic body 50. In this example, the upper recess 44a has a circular shape when viewed from the top and bottom, and the area of ​​this circle gradually decreases as it approaches the magnetic body 50. Therefore, the upper recess 44a is a roughly hemispherical shape with a tip at the bottom. Furthermore, as... Figure 10 As shown, the top (bottom) end of the preferred upper recess 44a is not a flat surface, but a curved surface that bulges downwards. Therefore, even when the upper surface 51 of the magnetic body 50 is exposed through the top (bottom) end of the upper recess 44a, the exposed area can be kept small, resulting in an excellent appearance. Furthermore, the area covering the base 41 of the magnetic body 50 can be increased, thereby improving strength and rigidity.

[0138] Furthermore, in the illustrated example, the upper recess 24a of the base rod 20 is approximately cylindrical, and its area observed from the top and bottom does not change as it moves from top to bottom. However, it could also be a shape similar to the upper recess 44a of the insert rod 40, with a generally hemispherical shape tapering at the top. Moreover, when the upper recess 24a is made approximately cylindrical, approximately conical, or approximately hemispherical, it requires only a minimal reduction in resin compared to a generally cuboid shape, making it more preferable.

[0139] In the upper recess 24a of the base rod 20 and the plurality of upper recesses 44a of the insert rod 40, the upper surfaces 31 and 51 of the magnetic bodies 30 and 50 are exposed through at least one upper recess 24a or 44a. As described later, the upper recesses 24a and 44a of the base rod 20 and the insert rod 40, and the upper protrusions 64a and 74a of the upper mold 60A of the base rod and the upper mold 70A of the insert rod (see reference) Figure 11 , 13 Corresponding to 14, 16). Therefore, during injection molding, the upper surfaces 31, 51 of the magnetic bodies 30, 50 are supported by at least one of the upper protrusions 64a, 74a of the upper mold 60A and the upper mold 70A of the insert rod. As a result, in the molded products of the upper mold 20 and the insert rod 40, the upper surfaces 31, 51 of the magnetic bodies 30, 50 are exposed via at least one upper recess 24a, 44a.

[0140] like Figure 6 As shown, the vertical distance A between the upper end (bottom of the groove) of the lower recess 25a and the lower end (bottom of the groove) of the upper recess 24a in the base rod 20 is larger than the vertical dimension B of the magnetic body 30 (A > B). Similarly, as Figure 10 As shown, the vertical distance C between the upper end (bottom of the groove) of the lower recess 45a and the lower end (bottom of the groove) of the upper recess 44a in the insert 40 is larger than the vertical dimension D of the magnetic body 50 (C > D). By setting this dimensional relationship, the magnetic bodies 30 and 50 can be reliably installed during injection molding. Furthermore, it is preferable that the vertical distance A is greater than the vertical dimension B, and more preferably greater than 0 mm and less than 0.5 mm. Additionally, it is preferable that the vertical distance C is greater than the vertical dimension D, and more preferably greater than 0 mm and less than 0.5 mm. By setting such a range of values, the magnetic bodies 30 and 50 can be reliably installed during injection molding, and injection molding can be performed in a manner that minimizes the exposure of the outer surfaces of the magnetic bodies 30 and 50 to the outside in the portion of the dimensional difference.

[0141] Figure 11 This is a perspective view of the upper mold used to manufacture the base rod, viewed from below. Figure 12 This is a perspective view of the lower mold used to manufacture the base rod, viewed from above. Figure 13 It means equivalent to Figure 6 The section shown is a cross-sectional view of the part that will be used to manufacture the upper and lower molds of the base rod in the closed state. Figure 14 This is a perspective view of the upper mold used to manufacture the insert rod, viewed from below. Figure 15 This is a three-dimensional view of the lower mold used to manufacture the insert rod, viewed from above. Figure 16 It means equivalent to Figure 10 The section is a cross-sectional view of the upper and lower molds used to manufacture the insert rod, in the closed state.

[0142] Each zipper tooth and zipper tape 2a, 2b can be manufactured in the following manner: using, for example Figures 11 to 16 Injection molding is performed using a mold as shown, and after injection molding, the magnetic materials 30 and 50 are magnetized (i.e., made magnetic). During injection molding, unmagnetized magnetic materials 30 and 50 are used, thereby avoiding problems that may occur when using permanent magnets. For example, when using unmagnetized magnetic materials 30 and 50, they will not magnetically engage with surrounding magnetic components during transport using a chuck or jig. Furthermore, it is not necessary to verify whether the mold is magnetic. Magnetization can be achieved by generating a strong magnetic field using an electromagnet and configuring a stop component with embedded unmagnetized magnetic materials.

[0143] Figure 13 The image shows a rod mold 60, which serves as a mold for manufacturing the rod 20. The rod mold 60 includes: Figure 11 The upper mold 60A of the base rod shown, and Figure 12 The lower mold 60B of the base rod is shown. Figure 16 The image shows an insert mold 70, which serves as a mold for manufacturing the insert 40. The insert mold 70 includes: Figure 14 The upper mold 70A of the insert rod shown, and Figure 15 The lower mold 70B of the insert rod is shown.

[0144] like Figures 13 to 16 As shown, the base rod mold 60 and the insert rod mold 70 respectively include: base recesses 61 and 71, which are used to form the bases 21 and 41 of the base rod 20 and the insert rod 40; insertion recesses 63 and 73, which extend forward from the base recesses 61 and 71 and are used to form the insertion portions 23 and 43 of the base rod 20 and the insert rod 40; and rod recesses 68 and 78, which are used to form the rod portions 28 and 48 of the base rod 20 and the insert rod 40.

[0145] The upper mold 60A for the base rod and the upper mold 70A for the insert rod include: upper mold base recesses 61A and 71A, upper mold insert recesses 63A and 73A, and upper mold rod recesses 68A and 78A that form the upper half of each of the base recesses 61 and 71, the insert recesses 63 and 73, and the rod recesses 68 and 78. The lower mold 60B for the base rod and the lower mold 70B for the insert rod include: lower mold base recesses 61B and 71B, lower mold insert recesses 63B and 73B, and lower mold rod recesses 68B and 78B that form the lower half of each of the base recesses 61 and 71, the insert recesses 63 and 73, and the rod recesses 68 and 78.

[0146] like Figure 13 As shown, with the upper mold 60A and lower mold 60B of the base rod closed in the vertical direction, resin is injected through the gate 60C, thereby injection molding the base rod 20. Additionally, as... Figure 16 As shown, with the upper mold 70A and the lower mold 70B of the inserter closed in the vertical direction, resin is injected through the gate 70C, thereby injection molding the inserter 40.

[0147] like Figure 12 , 13 As shown in Figures 15 and 16, the lower mold 60B of the base rod and the lower mold 70B of the insert rod have generally cylindrical mounting slots 62 and 72 for mounting the magnetic bodies 30 and 50. After injection molding, the mounting slot 62 of the lower mold 60B forms an axial protrusion 22 of the base rod 20. The mounting slots 62 and 72 include: lower portions 65 and 75 covering the lower surfaces 32 and 52 of the magnetic bodies 30 and 50 when they are mounted, and outer peripheral portions 66 and 76 covering the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50.

[0148] At least three lower protrusions 65a and 75a are formed on the lower parts 65 and 75 of the mounting slots 62 and 72, protruding upwards. These lower protrusions 65a and 75a form the lower recesses 25a and 45a of the base rod 20 and the insert rod 40. In this example, the three lower protrusions 65a and 75a are positioned to overlap with the magnetic bodies 30 and 50 when viewed from above. The three lower protrusions 65a and 75a are arranged at approximately equal intervals relative to the central axes AX1 and AX2 in the circumferential direction. The number of lower protrusions 65a and 75a can be at least three, or more than four. Having at least three lower protrusions 65a and 75a allows for stable support of the lower surfaces 32 and 52 of the approximately cylindrical magnetic bodies 30 and 50.

[0149] At least one peripheral protrusion 66a or 76a is formed on the outer periphery 66 or 76 of the mounting slots 62 and 72, protruding towards the inner diameter side. The peripheral protrusions 66a and 76a form the peripheral recesses 26a and 46a of the base rod 20 and the insert rod 40. The peripheral protrusions 66a and 76a are positioned to overlap with the magnetic body 50 when viewed radially. The number of peripheral protrusions 66a and 76a can be at least one, or more than two. In this example, the three peripheral protrusions 66a and 76a are arranged at approximately equal intervals relative to the central axes AX1 and AX2 in the circumferential direction. Having at least three peripheral protrusions 66a and 76a is sufficient to stably support the outer peripheral surfaces 33 and 53 of the approximately cylindrical magnetic bodies 30 and 50.

[0150] In this way, the lower surfaces 32 and 52 of the magnetic bodies 30 and 50 can be supported by at least three lower protrusions 65a and 75a, and the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 can be supported by at least one outer peripheral protrusion 66a and 76a, so injection molding can be performed with the magnetic bodies 30 and 50 stably configured. Furthermore, since only the lower protrusions 65a and 75a or the outer peripheral protrusions 66a and 76a in the lower mold 60B and the lower mold 70B contact the magnetic bodies 30 and 50 during molding, a stop-weight component (the stop bar 20 and the insert bar 40) can be provided. This increases the area covering the bases 21 and 41 of the magnetic bodies 30 and 50, resulting in excellent strength and rigidity, and reduces the exposed area of ​​the magnetic bodies 30 and 50, resulting in excellent appearance. In addition, since it does not require two stages of injection molding as in the prior art, it has a significant effect on cost reduction. In this way, while maintaining strength or aesthetics, it is possible to achieve the retaining structure of the magnetic bodies 30 and 50 in the code-stopping component at a lower cost.

[0151] In the lower die 60B of the base bar, the outer peripheral protrusion 66a and the lower protrusion 65a are arranged at different phases in the circumferential direction. Similarly, in the lower die 70B of the insert bar, the outer peripheral protrusion 76a and the lower protrusion 75a are arranged at different phases in the circumferential direction. In this example, the outer peripheral protrusions 66a and 76a are arranged at 0°, 4°, and 8° (240°) circumferential positions relative to the central axes AX1 and AX2 when viewed from the top and bottom, respectively, while the lower protrusions 65a and 75a are arranged at 60°, 180°, and 300° (2 hours) circumferential positions relative to the central axes AX1 and AX2 when viewed from the top and bottom. In this way, by arranging the outer peripheral protrusions 66a and 76a and the lower protrusions 65a and 75a in different phases in the circumferential direction, it is possible to suppress the occurrence of thinning of the wall thickness at the bases 21 and 41 of the finished product, such as the base rod 20 and the insert rod 40, thereby ensuring strength or rigidity.

[0152] The lower protrusions 65a and 75a are tapered at the top, and their area, when viewed from above, gradually decreases as they approach the lower surfaces 32 and 52 of the magnetic bodies 30 and 50. In this example, the lower protrusions 65a and 75a are circular when viewed from above, and the area of ​​this circle gradually decreases as it approaches the magnetic bodies 30 and 50. Thus, the lower protrusions 65a and 75a are approximately hemispherical in shape with a top tip. Furthermore, as... Figure 13 and Figure 16As shown, the top (upper end) of the preferred lower protrusions 65a and 75a is not a flat surface but a curved surface that protrudes upwards. Therefore, even when the lower surfaces 32 and 52 of the magnetic bodies 30 and 50 in the finished base rod 20 and insert rod 40 are exposed through the top (upper end) of the lower recesses 25a and 45a, the exposed area can be minimized, resulting in an excellent appearance. Furthermore, the area of ​​the bases 21 and 41 covering the magnetic bodies 30 and 50 can be increased, thereby improving strength and rigidity.

[0153] The outer peripheral protrusions 66a and 76a are tapered at their tips, and their radially visible area relative to the central axes AX1 and AX2 gradually decreases from the outer diameter side towards the inner diameter side, i.e., as they approach the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50. In this example, the radially visible shape of the outer peripheral protrusions 66a and 76a is rectangular, and the area of ​​this rectangle gradually decreases as it approaches the magnetic bodies 30 and 50. Furthermore, the vertically visible shape of the outer peripheral protrusions 66a and 76a is approximately semi-circular. Therefore, the outer peripheral protrusions 66a and 76a are approximately semi-cylindrical in shape with tips on the inner diameter side. Moreover, because the vertically visible shape is approximately semi-circular, the tips (inner diameter ends) of the outer peripheral protrusions 66a and 76a are not planar but curved surfaces convex towards the inner diameter side. Therefore, even when the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are exposed through the top (inner diameter end) of the outer peripheral recesses 26a and 46a of the base rod 20 and the insert rod 40, i.e., the bottom of the groove 26b and 46b, the exposed area can be kept small, resulting in an excellent appearance. In addition, the area of ​​the bases 21 and 41 covering the magnetic bodies 30 and 50 can be increased, thereby improving strength and rigidity.

[0154] The tops (inner diameter ends) of the outer peripheral protrusions 66a and 76a are inclined surfaces whose inner diameters 66R and 76R gradually increase from bottom to top. Therefore, it is easy to position the magnetic bodies 30 and 50 towards the inner diameter side of the outer peripheral protrusions 66a and 76a. Furthermore, even when the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are exposed via the tops (inner diameter ends) of the outer peripheral recesses 26a and 46a of the base rod 20 and insert rod 40, i.e., the groove bottoms 26b and 46b, the exposed area can be minimized, resulting in an excellent appearance.

[0155] Furthermore, the outer diameters 33R and 53R of the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are set to be smaller than the inner diameters 66R and 76R of the top ends (inner diameter ends) of the outer peripheral protrusions 66a and 76a (33R < 66R, 53R < 76R). As described above, since the top ends (inner diameter ends) of the outer peripheral protrusions 66a and 76a are inclined surfaces that gradually increase in size from bottom to top, their inner diameters 66R and 76R are smallest at the lower ends (the portions whose vertical positions coincide with the lower surfaces 32 and 52 of the magnetic bodies 30 and 50). The outer diameters 33R and 53R of the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are smaller than the inner diameters 66R and 76R of the lower ends (inner diameter ends) of the top ends (inner diameter ends) of the outer peripheral protrusions 66a and 76a. By setting such a dimensional relationship, the magnetic bodies 30 and 50 can be reliably installed during injection molding. Furthermore, it is preferable that the inner diameters 66R and 76R of the lower ends of the top (inner diameter ends) of the outer peripheral protrusions 66a and 76a are larger than the outer diameters 33R and 53R of the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50, and more preferably greater than 0 and less than 0.3 mm. By setting such a range of values, the magnetic bodies 30 and 50 can be reliably set during injection molding, and injection molding can be performed in a manner that minimizes the exposure of the outer surface of the magnet at the portion with this dimensional difference.

[0156] The upper mold 60A for the base rod and the upper mold 70A for the insert rod include upper portions 64 and 74, which cover the upper surfaces 31 and 51 of the magnetic bodies 30 and 50 disposed in the configuration slots 62 and 72 of the lower mold 60B for the base rod and the lower mold 70B for the insert rod.

[0157] At least one upper protrusion 64a is formed on the upper part 64 of the upper mold 60A of the base rod, which protrudes downward. The upper protrusion 64a is positioned to overlap with the magnetic body 30 when viewed from above. In this example, the upper protrusion 64a is positioned at 6 (180°) behind the central axis AX1, and is arranged to overlap with the rear end of the magnetic body 30 when viewed from above. The number of upper protrusions 64a can be at least one, or more than two.

[0158] At least one upper protrusion 74a is formed on the upper part 74 of the upper mold 70A of the insert rod, which protrudes downward. The number of upper protrusions 74a can be at least one, or more than two. In this example, four upper recesses 44a are arranged to overlap with the magnetic body 30 when viewed from above, and are separated from each other circumferentially relative to the central axis AX2. When viewed from above, the four upper recesses 44a are arranged at 0°, 4°, 120°, 6°, and 8° (240°) circumferential positions. Furthermore, 0° refers to the front relative to the central axis AX2, and 6° (180°) refers to the rear relative to the central axis AX2.

[0159] By providing at least one upper protrusion 64a, 74a, even if the magnetic bodies 30, 50 float due to the flow of resin injected from the gates 60C, 70C, the upper protrusions 64a, 74a can press down on the upper surfaces 31, 51, thereby properly maintaining the posture of the magnetic bodies 30, 50. Furthermore, the upper protrusions 64a, 74a form the upper recesses 24a, 44a of the base rod 20 and the insert rod 40, respectively.

[0160] The upper protrusion 74a of the upper mold 70A of the insert rod has a tapering shape at the tip, and its area, viewed from the top and bottom, gradually decreases as it approaches the upper surface 51 of the magnetic body 50. In this example, the upper protrusion 74a has a circular shape when viewed from the top and bottom, and the area of ​​this circle gradually decreases as it approaches the magnetic body 50. Therefore, the upper protrusion 74a is a roughly hemispherical shape with a tip at the bottom. Furthermore, as... Figure 16 As shown, the top (bottom) of the preferred upper protrusion 74a is not a flat surface but a curved surface that protrudes downwards. Therefore, even when the upper surface 51 of the magnetic body 50 is exposed via the top (bottom) of the upper protrusion 74a, the exposed area can be minimized, resulting in an excellent appearance. Furthermore, the area covering the base 41 of the magnetic body 50 can be increased, thereby improving strength and rigidity.

[0161] Furthermore, in the illustrated example, the upper protrusion 64a of the upper mold 60A is approximately cylindrical, and its area viewed from the top and bottom does not change as it moves from top to bottom. However, it could also adopt a shape similar to the upper protrusion 74a of the upper mold 70A, which is approximately hemispherical with a tapering tip. Moreover, when the upper protrusion 64a is shaped as approximately cylindrical, approximately conical, or approximately hemispherical, demolding is easier than when it is shaped as approximately cuboid.

[0162] like Figure 13 As shown, the vertical distance A' between the upper end of the lower protrusion 65a and the lower end of the upper protrusion 64a in the base rod mold 60 is larger than the vertical dimension B of the magnetic body 30 (A' > B). Similarly, as Figure 16As shown, the vertical distance C' between the upper end of the lower protrusion 75a and the lower end of the upper protrusion 74a (bottom of the groove) in the insert mold 70 is larger than the vertical dimension D of the magnetic body 50 (C' > D). By setting this dimensional relationship, the magnetic bodies 30 and 50 can be reliably installed between the upper mold 60A and the lower mold 60B of the base rod, and between the upper mold 70A and the lower mold 70B of the insert rod. Furthermore, it is preferable that the vertical distance A' is larger than the vertical dimension B, and more preferably greater than 0 mm and less than 0.5 mm. Additionally, it is preferable that the vertical distance C' is larger than the vertical dimension D, and more preferably greater than 0 mm and less than 0.5 mm. By setting such a range of values, the magnetic bodies 30 and 50 can be reliably installed during injection molding, and injection molding can be performed in a manner that minimizes the exposure of the outer surfaces of the magnetic bodies 30 and 50 to the outside in the portion of the dimensional difference.

[0163] Those skilled in the art, based on the technical level at the time of application and the above description, particularly the manufacturing method of the stop-code component, can understand the zipper manufacturing method. The following describes improvements unique to the stop-code component of this application.

[0164] Regarding the timing of magnetizing the magnetic bodies 30 and 50 embedded in the stop component, it is advantageous to perform this after assembling the zipper 1 using a pair of zipper teeth. In the zipper 1, the base bar 20 and the insert bar 40 are joined together, causing the base 21 and base 41 to be stacked. Therefore, the magnetic bodies 30 of base 21 and 50 of base 41 are also arranged vertically at intervals. In this state, a magnetic field with a fixed direction (e.g., a magnetic field with magnetic lines of force extending in the vertical direction) is applied to the rear end of the zipper 1. Thus, the lower half of the magnetic body 30 becomes the S pole (first pole), and the upper half becomes the N pole (second pole). Similarly, the lower half of the magnetic body 50 becomes the S pole (first pole), and the upper half becomes the N pole (second pole). By applying a magnetic field with a fixed direction to the rear end of the assembled zipper 1, it is possible to prevent the magnetic bodies 30 and 50 from being magnetized to opposite polarities with respect to the N and S poles.

[0165] Furthermore, the magnetic bodies 30 and 50 before magnetization are referred to as unmagnetized magnetic bodies, but they can also be slightly magnetized magnetic bodies. Unmagnetized magnetic bodies 30 and 50 are not limited to magnetic bodies that do not generate a magnetic field at all, but can also be magnetic bodies that generate a magnetic field with a small magnetic flux density.

[0166] Various embodiments have been described above with reference to the accompanying drawings, but the present invention is certainly not limited to these examples. It is obvious that those skilled in the art will conceive of various modifications or alterations within the scope of the claims, and these modifications naturally fall within the technical scope of the present invention. Furthermore, the structural elements of the above embodiments can be combined arbitrarily without departing from the spirit of the invention.

[0167] As stated above, the following matters are disclosed in this specification.

[0168] [1] A stop-code component, said stop-code components 20, 40 being used for zipper teeth 2a, 2b.

[0169] The stop code components 20 and 40 include:

[0170] Magnetic bodies 30 and 50 are roughly cylindrical and extend vertically; and

[0171] The bases 21 and 41 are embedded with the magnetic bodies 30 and 50.

[0172] The bases 21 and 41 include:

[0173] The upper parts 24 and 44 are roughly circular and cover the upper surfaces 31 and 51 of the magnetic bodies 30 and 50.

[0174] The lower parts 25 and 45 are generally circular plates, covering the lower surfaces 32 and 52 of the magnetic bodies 30 and 50; and

[0175] The outer peripheral portions 26 and 46 are generally cylindrical and cover the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50.

[0176] At least three lower recesses 25a and 45a are formed in the lower portions 25 and 45 of the bases 21 and 41, and at least one outer peripheral recess 26a and 46a is formed in the outer peripheral portions 26 and 46 of the bases 21 and 41, which are recessed toward the inner diameter side.

[0177] [2] In the stop code component described in [1], at least three lower recesses 25a and 45a are provided in a manner that are separated from each other in the circumferential direction in the lower portion 25 and 45, which are generally circular plates, and a plurality of outer peripheral recesses 26a and 46a are provided in a manner that are separated from each other in the circumferential direction in the outer peripheral portion 26 and 46, which are generally cylindrical.

[0178] [3] In the stop code component described in [2], the lower recesses 25a and 45a and the outer peripheral recesses 26a and 46a are arranged in different phases in the circumferential direction.

[0179] [4] In any of the stop code components described in [1] to [3], the lower recesses 25a and 45a are tapered at the top, and the area observed from the top and bottom gradually decreases from the bottom to the top.

[0180] [5] In any of the stop code components described in [1] to [4], the peripheral recesses 26a and 46a are tapered at the top and the area observed radially gradually decreases from the outer diameter side toward the inner diameter side.

[0181] [6] In any of the stop code components described in [1] to [5], the lower surfaces 32, 52 of the magnetic bodies 30, 50 are exposed via at least one of the lower recesses 25a, 45a.

[0182] [7] In any of the stop code components described in [1] to [6], the outer peripheral surfaces 33, 53 of the magnetic bodies 30, 50 are exposed via at least one of the outer peripheral recesses 26a, 46a.

[0183] [8] In any of the stop code components described in [1] to [7], the outer diameters 33R and 53R of the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are smaller than the inner diameters 26R and 46R of the groove bottoms 26b and 46b of the outer peripheral recesses 26a and 46a.

[0184] [9] In any of the stop code components described in [1] to [8], the bottom 26b, 46b of the groove of the outer peripheral recess 26a, 46a is an inclined surface with an inner diameter 26R, 46R that gradually increases from bottom to top.

[0185]

[10] In any of the stop code components described in [1] to [9], at least one upper recess 24a, 44a is formed on the upper part 24, 44 of the base 21, 41, which is recessed downward.

[0186]

[11] In the stop code component described in

[10] , the upper recesses 24a and 44a are tapered at the top, and the area observed from the top and bottom gradually decreases from top to bottom.

[0187]

[12] In the code-stopping component described in

[10] or

[11] , the upper surfaces 31, 51 of the magnetic bodies 30, 50 are exposed via at least one of the upper recesses 24a, 44a.

[0188]

[13] In any of the stop code components described in

[10] to

[12] , the vertical distance A, C between the upper end of the lower recess 25a, 45a and the lower end of the upper recess 24a, 44a is greater than the vertical dimension B, D of the magnetic body 30, 50.

[0189]

[14] A zipper, the zipper 1 comprising:

[0190] A pair of zipper teeth straps 2a and 2b; and

[0191] Slipper 10, used to open and close the pair of zipper teeth 2a, 2b.

[0192] On the inner edge of each of the pair of zipper tooth strips 2a and 2b in the width direction, stop code members 20 and 40 described in any one of [1] to

[13] are provided. Through the magnetic attraction between the magnetic body 30 of the stop code member 20 of one zipper tooth strip 2a and the magnetic body 50 of the stop code member 40 of the other zipper tooth strip 2b, the pair of bases 21 and 41 are stacked one on the other, so that the pair of stop code members 20 and 40 can be combined with each other.

[0193]

[15] A mold, said molds 60 and 70 being used to manufacture stop parts 20 and 40 for zipper teeth straps 2a and 2b.

[0194] The stop code components 20 and 40 include:

[0195] Magnetic bodies 30 and 50 are roughly cylindrical and extend vertically; and

[0196] The bases 21 and 41 are embedded with the magnetic bodies 30 and 50.

[0197] The molds 60 and 70 include upper molds 60A and 70A and lower molds 60B and 70B.

[0198] The lower molds 60B and 70B have mounting slots 62 and 72, which are generally cylindrical and can accommodate the magnetic bodies 30 and 50.

[0199] The configuration slots 62 and 72 of the lower molds 60B and 70B include:

[0200] The lower parts 65 and 75 cover the lower surfaces 32 and 52 of the magnetic bodies 30 and 50; and

[0201] The outer peripheral portions 66 and 76 cover the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50.

[0202] At least three lower protrusions 65a and 75a are formed on the lower portions 65 and 75 of the configuration grooves 62 and 72, and at least one outer peripheral protrusion 66a and 76a is formed on the outer peripheral portions 66 and 76 of the configuration grooves 62 and 72, protruding towards the inner diameter side.

[0203]

[16] In the mold described in

[15] , at least three lower protrusions 65a and 75a are provided in a manner that is separated from each other in the circumferential direction in the lower portions 65 and 75 of the configuration grooves 62 and 72, and a plurality of outer peripheral protrusions 66a and 76a are provided in a manner that is separated from each other in the circumferential direction in the outer peripheral portions 66 and 76 of the configuration grooves 62 and 72.

[0204]

[17] In the mold described in

[15] or

[16] , the lower protrusions 65a, 75a and the outer peripheral protrusions 66a, 76a are arranged in different phases in the circumferential direction.

[0205]

[18] In any of the molds described in

[15] to

[17] , the lower protrusions 65a and 75a are tapered at the top and the area observed from the top and bottom gradually decreases from the bottom to the top.

[0206]

[19] In any of the molds described in

[15] to

[18] , the peripheral protrusions 66a and 76a are tapered at the top and the area observed radially gradually decreases from the outer diameter side toward the inner diameter side.

[0207]

[20] In any of the molds described in

[15] to

[19] , the outer diameters 33R and 53R of the outer peripheral surfaces 33 and 53 of the magnetic bodies 30 and 50 are smaller than the inner diameters of the top ends of the outer peripheral protrusions 66a and 76a.

[0208]

[21] In any of the molds described in

[15] to

[20] , the top of the outer peripheral protrusions 66a and 76a is an inclined surface with an inner diameter that gradually increases from bottom to top.

[0209]

[22] In any of the molds described in

[15] to

[21] , the upper mold 60A, 70A includes an upper portion 64, 74 that covers the upper surfaces 31, 51 of the magnetic bodies 30, 50 disposed in the configuration slots 62, 72 of the lower mold 60B, 70B, and at least one upper protrusion 64a, 74a is formed on the upper portion 64, 74 of the upper mold 60A, 70A that protrudes downward.

[0210]

[23] In the mold described in

[22] , the upper protrusions 64a and 74a are tapered at the top and the area observed from the top and bottom gradually decreases from top to bottom.

[0211]

[24] In the mold described in

[22] or

[23] , when the lower molds 60B and 70B and the upper molds 60A and 70A are closed, the vertical distances A' and C' between the upper ends of the lower protrusions 65a and 75a and the lower ends of the upper protrusions 64a and 74a are larger than the vertical dimensions B and D of the magnetic bodies 30 and 50.

[0212]

[25] A method for manufacturing a stop code component, wherein the stop code component 20, 40 is injection molded using the mold 60, 70 described in any one of

[15] to

[24] .

Claims

1. A stop-code component, said stop-code component (20, 40) being used for zipper teeth (2a, 2b), characterized in that: The stop code components (20, 40) include: Magnetic bodies (30, 50), which are roughly cylindrical and extend in the vertical direction; and The base (21, 41) has the magnetic bodies (30, 50) embedded therein. The base (21, 41) includes: The upper part (24, 44) is roughly circular and covers the upper surface (31, 51) of the magnetic body (30, 50); The lower part (25, 45), which is generally circular in shape, covers the lower surface (32, 52) of the magnetic body (30, 50); and The outer peripheral portion (26, 46), which is generally cylindrical, covers the outer peripheral surface (33, 53) of the magnetic body (30, 50). At least three lower recesses (25, 45) are formed in the lower portion (25, 45) of the base (21, 41) and are recessed upwards. At least one peripheral recess (26a, 46a) is formed on the outer peripheral portion (26, 46) of the base (21, 41) and is recessed toward the inner diameter side.

2. The code-stopping component according to claim 1, characterized in that: In the generally circular lower portion (25, 45), the at least three lower recesses (25a, 45a) are provided in a manner that separates them from each other in the circumferential direction. In the generally cylindrical outer peripheral portion (26, 46), a plurality of the outer peripheral recesses (26a, 46a) are provided in a manner that they are separated from each other in the circumferential direction.

3. The code-stopping component according to claim 2, characterized in that: The lower recesses (25a, 45a) and the outer peripheral recesses (26a, 46a) are arranged at different phases in the circumferential direction.

4. The code-stopping component according to claim 1, characterized in that: The lower recesses (25a, 45a) are tapered at the top, and their area, when viewed from the top and bottom, gradually decreases from bottom to top.

5. The code-stopping component according to claim 1, characterized in that: The peripheral recesses (26a, 46a) are tapered at the top, and their radially visible area gradually decreases from the outer diameter side toward the inner diameter side.

6. The code-stopping component according to claim 1, characterized in that: The lower surface (32, 52) of the magnetic body (30, 50) is exposed via at least one of the lower recesses (25a, 45a).

7. The code-stopping component according to claim 1, characterized in that: The outer peripheral surfaces (33, 53) of the magnetic bodies (30, 50) are exposed via at least one of the outer peripheral recesses (26a, 46a).

8. The code-stopping component according to claim 1, characterized in that: The outer diameter (33R, 53R) of the outer peripheral surface (33, 53) of the magnetic body (30, 50) is smaller than the inner diameter (26R, 46R) of the bottom of the groove (26b, 46b) of the outer peripheral recess (26a, 46a).

9. The code-stopping component according to claim 1, characterized in that: The bottom of the groove (26b, 46b) of the outer peripheral recess (26a, 46a) is an inclined surface whose inner diameter (26R, 46R) gradually increases from bottom to top.

10. The code-stopping component according to claim 1, characterized in that: At least one upper recess (24a, 44a) is formed on the upper part (24, 44) of the base (21, 41) and is recessed downward.

11. The code-stopping component according to claim 10, characterized in that: The upper recess (24a, 44a) has a tapering shape at the top, and the area observed from the top and bottom gradually decreases as it moves from top to bottom.

12. The code-stopping component according to claim 10, characterized in that: The upper surface (31, 51) of the magnetic body (30, 50) is exposed via at least one of the upper recesses (24a, 44a).

13. The code-stopping component according to claim 10, characterized in that: The vertical distance between the upper end of the lower recess (25a, 45a) and the lower end of the upper recess (24a, 44a) is larger than the vertical dimension of the magnetic body (30, 50).

14. A zipper, characterized in that, The zipper (1) includes: A pair of zipper teeth (2a, 2b); and A zipper pull (10) for opening and closing the pair of zipper teeth (2a, 2b). On the inner edge of each of the pair of zipper teeth (2a, 2b) in the width direction, a stop component (20, 40) as described in any one of claims 1 to 13 is provided. The magnetic attraction between the magnetic body (30) of the stop code member (20) of one zipper tooth tape (2a) and the magnetic body (50) of the stop code member (40) of the other zipper tooth tape (2b) causes the pair of bases (21, 41) to be stacked one on the other, thereby allowing the pair of stop code members (20, 40) to be joined together.

15. A mold (60, 70) for manufacturing stop components (20, 40) for zipper teeth (2a, 2b), characterized in that: The stop code components (20, 40) include: Magnetic bodies (30, 50), which are roughly cylindrical and extend in the vertical direction; and The base (21, 41) has the magnetic bodies (30, 50) embedded therein. The molds (60, 70) include upper molds (60A, 70A) and lower molds (60B, 70B). The lower molds (60B, 70B) have mounting slots (62, 72), which are generally cylindrical and can accommodate the magnetic bodies (30, 50). The configuration slots (62, 72) of the lower molds (60B, 70B) include: The lower part (65, 75) covers the lower surface (32, 52) of the magnetic body (30, 50); and The outer peripheral portions (66, 76) cover the outer peripheral surfaces (33, 53) of the magnetic bodies (30, 50). At least three lower protrusions (65a, 75a) are formed on the lower part (65, 75) of the configuration slots (62, 72) and are arranged to protrude upwards. At least one peripheral protrusion (66a, 76a) is formed on the outer peripheral portion (66, 76) of the configuration slot (62, 72) and is provided to protrude toward the inner diameter side.

16. The mold according to claim 15, characterized in that: In the lower portion (65, 75) of the configuration slots (62, 72), the at least three lower protrusions (65a, 75a) are arranged separately from each other in the circumferential direction. In the outer peripheral portion (66, 76) of the configuration slot (62, 72), a plurality of outer peripheral protrusions (66a, 76a) are provided in a manner that they are separated from each other in the circumferential direction.

17. The mold according to claim 15, characterized in that: The lower protrusions (65a, 75a) and the outer peripheral protrusions (66a, 76a) are arranged at different phases in the circumferential direction.

18. The mold according to claim 15, characterized in that: The lower protrusions (65a, 75a) have a tapering shape at the top, and the area observed from the top and bottom gradually decreases as it moves from bottom to top.

19. The mold according to claim 15, characterized in that: The peripheral protrusions (66a, 76a) have a tapering shape at the top, and the area observed radially gradually decreases from the outer diameter side toward the inner diameter side.

20. The mold according to claim 15, characterized in that: The outer diameter (33R, 53R) of the outer peripheral surface (33, 53) of the magnetic body (30, 50) is smaller than the inner diameter of the top end of the outer peripheral protrusion (66a, 76a).

21. The mold according to claim 15, characterized in that: The top of the outer peripheral protrusions (66a, 76a) is an inclined surface whose inner diameter gradually increases from bottom to top.

22. The mold according to claim 15, characterized in that: The upper mold (60A, 70A) includes an upper portion (64, 74) that covers the upper surface (31, 51) of the magnetic body (30, 50) disposed in the configuration slot (62, 72) of the lower mold (60B, 70B). At least one upper protrusion (64a, 74a) is formed on the upper part (64, 74) of the upper mold (60A, 70A) and is provided to protrude downward.

23. The mold according to claim 22, characterized in that: The upper protrusions (64a, 74a) are tapered at the top, and their area, when viewed from the top to the bottom, gradually decreases as they move from top to bottom.

24. The mold according to claim 22, characterized in that: With the lower mold (60B, 70B) and the upper mold (60A, 70A) closed, the vertical distance (A', C') between the upper end of the lower protrusion (65a, 75a) and the lower end of the upper protrusion (64a, 74a) is larger than the vertical dimension (B, D) of the magnetic body (30, 50).

25. A method for manufacturing a stop code component, characterized in that: The stop parts (20, 40) are injection molded using the molds (60, 70) according to any one of claims 15 to 24.

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