zipper

Abstract

The present application provides a zipper which has high coupling strength in the engaged state and can smoothly perform the operation of engaging the combination part. The zipper includes a pair of fastener stringers including a plurality of fastener elements mounted to core wire sections facing each other along the length direction of a pair of fastener tapes. The fastener element has a tape mounting section mounted to the fastener tape and an engaging section protruding from the core wire section of the fastener tape. In the state where the left and right pair of fastener elements facing each other are combined, the center lines of the tape mounting sections of the left and right pair of fastener elements are substantially identical. In the pair of engaging surfaces of the engaging section, a combination protrusion protruding from the engaging surface and a wall section formed at a position on the tape mounting section side with respect to the combination protrusion and surrounding the combination protrusion are included. A housing space is formed between the combination protrusion and the wall section. In the state where the left and right pair of fastener elements are combined, the combination protrusion of one is inserted into the housing space of the other.

Description

TECHNICAL FIELD

[0001] The present application relates to a slide fastener having a metal slide fastener element including a tape attachment portion attached to a slide fastener tape and a combination portion protruding from the slide fastener tape. BACKGROUND

[0002] Conventionally, a metal slide fastener element has been generally provided with a tape attachment portion attached to a slide fastener tape and a combination portion protruding from the slide fastener tape and engaging with each other. Such a slide fastener element has various shapes. For example, a slide fastener element disclosed in Patent Literature 1 is provided with a tape attachment portion attached to a slide fastener tape and a combination portion protruding from the slide fastener tape. On one face of the combination portion intersecting with the extension direction of one of the slide fastener tapes, a protrusion engaging with another slide fastener element attached to the other slide fastener tape and opposed thereto is provided, and on the opposite face of the combination portion, a recess into which the protrusion of the adjacent slide fastener element of the opposed slide fastener element is inserted and engaged is formed. The slide fastener elements attached to the pair of slide fastener tapes are formed point-symmetrically with each other, and the protrusion and the recess are alternately formed in the combination portion, so that the slide fastener elements are provided to be repeatedly engaged and disengaged. In the slide fastener in which the slide fastener elements are attached, the protrusion of the combination portion of the slide fastener element is inserted and engaged in the recess of the opposed slide fastener element, and the protrusion of the adjacent slide fastener element of the opposed slide fastener element is inserted and engaged in the recess, so that the combination portions engage with each other.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT LITERATURE

[0005] Patent Literature 1: International Publication No. 2018 / 012840 SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] In the case of the background art, the protrusion is hemispherical in shape or a shape in which a cylinder is divided into two halves in the length direction, and the protrusion amount is small, and the engagement strength of the combination portion is not sufficient. Also, the recess is a negative shape of the protrusion, and the gap is small, so that it is difficult to engage, and if not properly inserted, there is a possibility that the engagement becomes poor.

[0008] The present application has been achieved in view of the problems of the background art, and aims to provide a slide fastener in which the connection strength in the engaged state is high, and the operation of engaging the combination portions can be smoothly performed.

[0009] MEANS OF SOLVING THE PROBLEMS

[0010] The present application is a zipper including a pair of left and right zipper tapes and a pair of fastener chains including a plurality of fastener elements mounted to mutually facing core wire portions of the zipper tapes along a length direction of the zipper tapes, on which a slider that mutually combines the fastener elements by passing is slidably mounted. The fastener element has a tape mounting portion mounted to the zipper tape, and an engaging portion extending from the tape mounting portion via a base end portion and protruding from the core wire portion of the zipper tape. The tape mounting portion, when mounted to the zipper tape, does not coincide with a center line of the zipper tape orthogonal to the length direction and a center line of the engaging portion orthogonal to the length direction. The engaging portion has a pair of engaging surfaces crossing the length direction of the zipper tape mounted to the tape mounting portion, on which a combination protrusion protruding from the engaging surface and a wall portion formed on the tape mounting portion side with respect to the combination protrusion and surrounding the combination protrusion separately from the combination protrusion are provided, and a housing space is provided between the combination protrusion and the wall portion. In a state where the pair of left and right fastener elements of the pair of left and right zipper tapes are combined, the combination protrusion of one of the pair of left and right fastener elements is inserted and caught in the housing space of the other. In a state where the pair of left and right fastener elements of the pair of left and right zipper tapes are combined, the center lines of the tape mounting portions of the pair of left and right fastener elements can substantially coincide with each other with respect to the length direction of the zipper tape.

[0011] The pair of engaging surfaces of the engaging portion crossing the length direction of the zipper tape held by the tape mounting portion and a pair of tape mounting portion surfaces of the tape mounting portion crossing the length direction of the zipper tape are staggered with respect to each other, and the base end portion between the engaging portion and the tape mounting portion has an inclined base end portion surface connecting the engaging surface of the engaging portion and the tape mounting portion surface of the tape mounting portion, which faces the housing space.

[0012] The base end portion surface of the base end portion and the pair of wall portions are continuous with respect to each other and form a U shape with the combination protrusion side open. The pair of left and right fastener elements are formed to be point-symmetric with respect to each other with a center axis in a thickness direction of the zipper tape as a center. The fastener element is a metal formed by die-casting.

[0013] A decoration of a prescribed shape is provided on a surface side of a pair of leg portions of the fastener element. The decorations are provided to be symmetrical with respect to each other with respect to a center line parallel to the length direction of the pair of zipper tapes. Further, the decoration can form a set of designs in the pair of fastener elements combined with each other.

[0014] Effects of the Invention

[0015] The present application provides a zipper having high strength in an engaged state, and capable of smoothly performing engagement and separation operations without causing adverse conditions in an operation of engaging a pair of teeth. In particular, if the center lines of the tape attachment portions of the left and right pairs of zipper teeth facing each other are located on substantially one straight line, the surface side of the zipper teeth can be easily subjected to a shape as decoration, and a high and unique decorative design can be formed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a perspective view of a zipper tooth of a zipper according to a first embodiment of the present application.

[0017] Figure 2 FIG. 2 is a perspective view of an engaged state of the zipper tooth in the zipper according to the first embodiment.

[0018] Figure 3 FIG. 3 is an elevation view of the engaged state of the zipper tooth in the zipper according to the first embodiment.

[0019] Figure 4 FIG. 4 is an elevation view of the zipper according to the first embodiment.

[0020] Figure 5 FIG. 5 is a plan view (a), an elevation view (b), and a left side view (c) of a zipper tooth of a zipper according to a second embodiment of the present application.

[0021] Figure 6 FIG. 6 is a perspective view of an engaged state of the zipper tooth in the zipper according to the second embodiment.

[0022] Figure 7 FIG. 7 is an elevation view of the zipper according to the second embodiment.

[0023] Figure 8 FIG. 8 is a plan view (a), an elevation view (b), and a left side view (c) of a zipper tooth of a zipper according to a third embodiment of the present application.

[0024] Figure 9 FIG. 9 is a perspective view of an engaged state of the zipper tooth in the zipper according to the third embodiment.

[0025] Figure 10 FIG. 10 is an elevation view of the zipper according to the third embodiment.

[0026] Explanation of Symbols

[0027] 10: Zipper

[0028] 12: Zipper tape

[0029] 12a: Core wire portion

[0030] 14: Zipper tooth

[0031] 16: Tooth row

[0032] 20: puller

[0033] 22, 40: combination protrusion

[0034] 24: engagement portion

[0035] 24a, 24b: engagement surface

[0036] 26: belt mounting portion

[0037] 26a, 26b: belt mounting portion surface

[0038] 24CL, 26CL: center line

[0039] 28: base end portion

[0040] 28a, 28c: base end portion surface

[0041] 36, 42: wall portion

[0042] 38, 44: housing space DETAILED DESCRIPTION

[0043] Hereinafter, an embodiment of the present application will be described based on the drawings. Figures 1-4 A zipper 10 of the first embodiment of the present application is shown. In addition, in the following description of the zipper chain, the Z-axis direction on the drawing is the direction in which the zipper chain is mounted to the zipper belt in the length direction of the zipper belt. Further, the left-right direction of the zipper chain is the Y-axis direction on the drawing, and is the direction in which the pair of zipper belts face each other when the zipper chain is mounted to the zipper belt, and is the width direction of the belt. Furthermore, the front-back direction of the zipper chain is the X-axis direction on the drawing, and is the thickness direction of the zipper belt when the zipper chain is mounted to the zipper belt.

[0044] First, based on the above-described conventional zipper chain, the present application will be described. Figure 4 The zipper 10 will be described. The zipper 10 has a pair of left and right zipper belts 12, and has a core wire portion 12a bulging in the front-back direction at the edge portion of the side where the zipper belts 12 abut and face each other in the Z-axis direction that is the length direction of the zipper belts 12. At the core wire portion 12a, a plurality of zipper chains 14 arranged to face each other are mounted at a certain interval to become a chain row 16, thereby forming a zipper chain belt 18. The zipper 10 includes a pair of left and right belt mounting portions 26 in the Figure 4A first zipper tape 18a is positioned on the left side, and a second zipper tape 18b is positioned on the right side. A puller 20 is installed in the first zipper tape 18a and the second zipper tape 18b, and is slidably arranged along the chain 16, and engages and separates the chain 16. Hereinafter, the chain 16 formed in the first zipper tape 18a will be referred to as a first chain 16a, and the chain 16 formed in the second zipper tape 18b will be referred to as a second chain 16b.

[0045] The zipper 10 of the present embodiment has a feature in the form of the zipper chain 14 forming the chain 16, and is formed similarly to the general zipper of the past with respect to members other than the zipper chain 14. Therefore, in the following description, the form of the zipper chain 14 will be mainly described, and detailed description of the members other than the zipper chain 14 will be omitted.

[0046] The zipper chain 14 is produced by die casting a zinc alloy, and a plurality of zipper chains 14 are installed at a certain interval along the Z-axis direction in the core portion 12a of the zipper tape 12. As shown in FIG. 1, the zipper chain 14 has a tape mounting portion 26 mounted to the zipper tape 12, a base end portion 28 integrally formed continuously from the tape mounting portion 26, and an engagement portion 24 as a combination portion extending from the base end portion 28 and protruding from the core portion 12a of the zipper tape 12, the engagement portion 24 being positioned at one end portion in the left-right direction, the tape mounting portion 26 being positioned at the other end portion, and the base end portion 28 being positioned at the center. Figures 1-3 The tape mounting portion 26 is provided with a pair of front and back leg portions 30 extending in the left-right direction from the base end portion 28, thereby forming a sandwiched space 32 surrounded by the base end portion 28 and the pair of leg portions 30. When viewed in the Z-axis direction, the zipper chain 14 has a substantially rectangular profile, and is shaped with four corners being chamfered. The thickness of the zipper chain 14 in the front-back direction is slightly narrower on the engagement portion 24 side than on the tape mounting portion 26 side. The tape mounting portion 26 is parallel to the surface of the zipper tape 12, and is symmetrically formed with a plane passing through the center of the front-back direction as the center.

[0047]

[0048] ​The width of the engagement portion 24 in the Z-axis direction is smaller than the width of the band attachment portion 26 in the Z-axis direction, and is about half the width of the band attachment portion 26. That is, if the thickness of the band attachment portion 26, which is the distance between one of the band attachment faces 26a of the band attachment portion 26 orthogonal to the Z-axis direction and the opposite band attachment face 26b, is w, the thickness of the engagement portion 24, which is the distance between the engagement face 24a on the side of the band attachment face 26a and the opposite engagement face 24b, is w / 2. Further, the center line 24CL in the thickness of the engagement portion 24 is offset from the center line 26CL of the band attachment portion 26 in the Z-axis direction, and is parallel to the center line 26CL. The center line 24CL in the thickness of the engagement portion 24 is located near the band attachment face 26b of the band attachment portion 26, and is located slightly inward of the band attachment portion 26 from the band attachment face 26b.

[0049] The engagement face 24a of the engagement portion 24 is parallel to the band attachment face 26a of the band attachment portion 26, and is located offset toward the band attachment face 26b, and is continuous with the band attachment face 26a via the base end face 28a of the base end portion 28. The base end face 28a of the base end portion 28 is inclined with respect to the engagement face 24a and the band attachment face 26a, and intersects the engagement face 24a at an obtuse angle slightly larger than a right angle.

[0050] The engagement face 24a of the engagement portion 24 is parallel to the band attachment face 26a of the band attachment portion 26, and is located offset toward the band attachment face 26b, and is continuous with the band attachment face 26a via the base end face 28a of the base end portion 28. The base end face 28a of the base end portion 28 is inclined with respect to the engagement face 24a and the band attachment face 26a, and intersects the engagement face 24a at an obtuse angle slightly larger than a right angle.

[0051] On the portion of the engagement surface 24a adjacent to the base end surface 28a, wall portions 36 are provided on both sides in the X-axis direction of the combination protrusion 22 so as to face each other with a gap therebetween and form a U shape together with the base end surface 28a. The wall portion 36 is a plate-shaped protrusion protruding in the Z-axis direction from the engagement surface 24a, and two faces of the plate shape are continuous with the base end surface 28a and the engagement surface 24a. The outer side face of the wall portion 36 is continuous with the outer side faces of the belt mounting portion 26 and the engagement portion 24. The inner side face 36a on the opposite side from the outer side face faces the combination protrusion 22 with a gap therebetween, and the interval between the inner side face 36a and the outer side face is inclined so as to be thicker in the portion continuous with the base end surface 28a of the base end portion 28 than in the end portion close to the combination protrusion 22. The top face of the wall portion 36 on the opposite side from the engagement surface 24a is located near the middle of the height of the base end surface 28a, is slightly lower in the Z-axis direction than the top face 22a of the combination protrusion 22, and is substantially parallel to the engagement surface 24a. The face located in the end portion close to the combination protrusion 22 is inclined so as to approach the side of the base end surface 28a as it moves away from the engagement surface 24a.

[0052] Thus, the wall portions 36 of symmetrical shape are provided on both sides in the X-axis direction of the engagement surface 24a. The space enclosed by the inner side faces 36a of the pair of wall portions 36, the combination protrusion 22, and the base end surface 28a of the base end portion 28 becomes the accommodation space 38 for the combination protrusion 22 of the opposing zipper element 14 to be inserted when the zipper elements 14 of the zipper 10 are engaged.

[0053] In addition, similarly, the engagement surface 24b of the engagement portion 24 is parallel to the belt mounting portion surface 26b of the belt mounting portion 26, and is located offset to the outer side of the belt mounting portion surface 26b. The engagement surface 24b is continuous with the belt mounting portion surface 26b via the base end surface 28b and the base end surface 28c of the base end portion 28. The base end surface 28b of the base end portion 28 is continuous with the belt mounting portion surface 26b, and intersects the belt mounting portion surface 26b at an obtuse angle slightly larger than a right angle. The side portion of the base end surface 28b on the opposite side from the belt mounting portion surface 26b protrudes to a position higher in the Z-axis direction than the engagement surface 24b, and is continuous with the base end surface 28c. The base end surface 28c intersects the base end surface 28b at an acute angle, and is continuous with the engagement surface 24b at substantially a right angle. Furthermore, the angle of the base end surface 28b with respect to the Z-axis direction is larger than that of the base end surface 28a. Also, the length in the left-right direction is shorter than that of the base end surface 28a.

[0054] A combined protrusion 40, identical in shape to the combined protrusion 22, is provided on the meshing surface 24b of the meshing portion 24. The combined protrusion 40 is a frustum-shaped protrusion projecting in the Z-axis direction, extending along the front end portion 24c in the X-axis direction (i.e., the surface direction). The surface on the front end portion 24c side is curved so that it slightly protrudes towards the front end portion 24c near the center. The top surface 40a of the combined protrusion 40 is a plane parallel to the meshing surface 24b, and is slightly higher than the corner formed by the base end portion 28b and the base end portion 28c.

[0055] At the portion of the meshing surface 24b adjacent to the base end face 28c, wall portions 42 are provided on both sides of the combined protrusion 40 in the X-axis direction, spaced apart from each other and facing each other, forming a U-shape together with the base end face 28c. The wall portion 42 is a plate-shaped protrusion projecting from the meshing surface 24b in the Z-axis direction. The two surfaces of the plate shape are continuous with the base end face 28c and the meshing surface 24b. The outer surface of the wall portion 42 is continuous with the outer surfaces of the belt mounting portion 26 and the meshing portion 24, forming the same surface. The inner surface 42a, opposite to the outer surface, faces the combined protrusion 40 with a gap, and the thickness of the wall portion 42, i.e., the distance between the inner and outer surfaces, is inclined such that the portion continuous with the base end face 28c of the base end face 28 is thicker than the portion near the end of the combined protrusion 40. The top surface of the wall portion 42, opposite to the meshing surface 24b, has the same height as the corner formed by the base end face 28b and the base end face 28c. It is slightly lower than the top surface 40a of the combined protrusion 40 in the Z-axis direction and is parallel to the meshing surface 24b. The surface located near the end face of the combined protrusion 40 is inclined in a manner that it moves away from the meshing surface 24b and closer to the base end face 28c.

[0056] Thus, a pair of symmetrically shaped wall portions 42 are provided on both sides of the meshing surface 24b in the X-axis direction. Furthermore, the space surrounded by the inner surfaces 42a of the pair of wall portions 42, the combined protrusions 40, and the base end face 28c of the base end 28 becomes a receiving space 44 for the combined protrusions 40 of the opposing zipper teeth 14 to be inserted when the zipper teeth 14 of the zipper 10 are engaged. Moreover, the pair of opposing left and right zipper teeth 14 are formed point-symmetrically about a central axis parallel to the X-axis direction, which is the thickness direction of the zipper tape 12.

[0057] The zipper teeth 14 in the described embodiment are die-cast from zinc alloy. The manufactured zipper teeth 14 are installed on the zipper tape 12 at predetermined intervals. The installation method of the zipper teeth 14 is as follows: the core wire portion 12a of the edge of the zipper tape 12 is inserted between a pair of legs 30. With the core wire portion 12a held in the clamping space 32 of the zipper teeth 14, the front ends of the pair of legs 30 are pushed towards each other to plastically deform them, thereby being installed on the zipper tape 12. Thus, the core wire portion 12a of the zipper tape 12 is reliably held in the clamping space 32 of the tape mounting portion 26.

[0058] The orientation of the zipper teeth when installing 14 is as follows: Figure 1 , Figure 4 As shown, regarding the first zipper tooth row 16a of the first zipper tooth belt 18a on the left, the zipper tooth 14 is installed with the center line 24CL of the engagement portion 24 located above the center line 26CL of the belt mounting portion 26 in the Z-axis direction. That is, it is installed with the engagement surface 24b of the engagement portion 24 located above the Z-axis direction, the combined protrusion 40 protruding upward in the Z-axis direction, the engagement surface 24a located below the engagement surface 24b in the Z-axis direction, and the combined protrusion 22 protruding downward in the Z-axis direction. In contrast, regarding the second zipper tooth row 16b of the second zipper tooth belt 18b on the right, the zipper tooth 14 is installed with the center line 24CL of the engagement portion 24 located below the center line 26CL of the belt mounting portion 26 in the Z-axis direction. That is, the assembly is performed with the meshing surface 24b of the meshing part 24 located below the Z-axis, the combined protrusion 40 protruding below the Z-axis, the meshing surface 24b located below the Z-axis even further than the meshing surface 24a, and the combined protrusion 22 protruding above the Z-axis.

[0059] The zipper teeth 14 of the left and right pairs of zipper tooth rows 16 are of the same shape and their installation orientation is point-symmetrical with respect to the central axis parallel to the X-axis direction. The left and right zipper teeth 14 are installed in a manner in which the center line 26CL of the mounting portion 26 is aligned with the Z-axis direction of the pair of zipper tapes 12. Alternatively, the left and right zipper teeth 14 can be installed in opposite directions. That is, in the right zipper tooth 14, compared to the center line 26CL of the mounting portion 26, the center line 24CL of the engaging portion 24 is above in the Z-axis direction, and the combined protrusion 40 protrudes upward in the Z-axis direction; in the left zipper tooth 14, compared to the center line 26CL of the mounting portion 26, the center line 24CL of the engaging portion 24 is below in the Z-axis direction, and the combined protrusion 22 protrudes upward in the Z-axis direction.

[0060] Thus, when the left and right zipper teeth 14 are engaged, the engagement surfaces 24a of the engagement portions 24 face each other at a prescribed interval, the combined protrusions 22 are inserted into the accommodation spaces 38, and are held by the base end surface 28a of the base end portion 28 and the inner side surfaces 36a of the pair of wall portions 36. Also, the engagement surfaces 24b face each other at a prescribed interval, the combined protrusions 40 are inserted into the accommodation spaces 44, and are held by the base end surface 28c of the base end portion 28 and the inner side surfaces 42a of the pair of wall portions 42.

[0061] Next, the engagement method of the zipper 10 will be described. If the slider 20 is raised on the first zipper tape 18a and the second zipper tape 18b to cause the first zipper tape 18a and the second zipper tape 18b to approach while tilting with respect to each other, the combined protrusions 22 of the zipper teeth 14 of the first zipper tooth row 16a on the left are inserted into and caught in the accommodation spaces 38 of the zipper teeth 14 of the second zipper tooth row 16b on the right. At this time, as shown in FIG. 6, the left and right pairs of zipper teeth 14 are engaged in a state in which the center lines 26CL of the tape attachment portions 26 coincide with each other. Figure 4 Figure 3 If the slider 20 is further raised, the next pair of left and right zipper teeth 14 adjacent in the Z-axis direction are engaged with each other. At this time, the combined protrusions 40 of the zipper teeth 14 on the right are inserted into and engaged with the accommodation spaces 44 of the zipper teeth 14 on the left. This operation is repeated, and as shown in FIG. 7, the first zipper tape 18a and the second zipper tape 18b become parallel to each other and closed. Figure 4

[0062] In the zipper 10 of the embodiment, the engagement portions 24 of the zipper teeth 14 are assembled staggered with respect to each other, the tape attachment portions 26 are assembled at the same height with respect to each other, and the front and back zipper teeth 14 are located at positions that are linearly symmetrical with respect to the center axes of the Z-axis direction with respect to each other, thereby becoming an engaged state in which the appearance has a characteristic. The combined protrusions 22, the combined protrusions 40 are inserted into the accommodation spaces 38, the accommodation spaces 44, and are surrounded by the wall portions 36, the wall portions 42, and the base end portion 28 without coming off.

[0063] Further, the top surfaces 22a of the combined protrusions 22, the top surfaces 40a of the combined protrusions 40 are separated from the engagement surfaces 24a, the engagement surfaces 24b at a prescribed interval. Also, the top surfaces of the wall portions 36, the wall portions 42 are separated from the engagement surfaces 24a, the engagement surfaces 24b substantially in parallel with respect to the engagement surfaces 24a, the engagement surfaces 24b. When the engagement is released, the slider 20 is moved to cause the left and right zipper tapes 12 to open obliquely, and the combined protrusions 22, the combined protrusions 40 of the zipper teeth 14 are caused to come off from the accommodation spaces 38, the accommodation spaces 44, thereby causing the first zipper tape 18a and the second zipper tape 18b to separate.

[0064] ​​With the slide fastener 10 of the embodiment, the strength of engagement is high, and no adverse situations occur in the engagement operation, so the operation can be performed smoothly. In addition, the left and right pair of slide fastener elements 14 of the first slide fastener tape 18a and the second slide fastener tape 18b are engaged in positions in the same Z-axis direction to have a characteristic appearance, so the designability is high. If the slide fastener 10 is installed in a product such as a bag or clothes, the product can have high designability by effectively utilizing the characteristic appearance. The combination protrusion 22 is a tetragonal pyramid shape protrusion protruding in the Z-axis direction, has a protruding shape elongated in the X-axis direction along the tip end portion 24c, and the surface of the tip end portion 24c side is curved so as to protrude slightly toward the tip end portion 24c side in the vicinity of the center, so the engagement and disengagement are smooth and the use is easy.

[0065] Next, the slide fastener 50 of the second embodiment of the present application will be described below. Here, the same symbols are attached to the structures common to those of the first embodiment, and the description will be simplified. As shown in FIG. 6, the slide fastener element 54 of the embodiment has a tape mounting portion 26 mounted to the slide fastener tape 12, a base end portion 28 integrally formed continuously from the tape mounting portion 26, and an engagement portion 24 as a combination portion extending from the base end portion 28 and protruding from the core wire portion 12a of the slide fastener tape 12, and a decoration 56 is integrally formed on the side surface of the slide fastener element 54 on the surface side of the slide fastener 50. Figures 5-7

[0066] The decoration 56 is integrally formed on the side surface on the surface side of the tape mounting portion 26, and has a V shape when viewed from the front surface side. In the pair of slide fastener elements 54, the center lines 26CL of the tape mounting portions 26 are formed in coincidence with each other, and the V-shaped decorations 56 of the respective slide fastener elements 54 are located at positions symmetrical with each other with respect to the center axis in the length direction of the slide fastener tape 12, that is, the Z-axis direction, so the decorations 56 exhibit a W shape as a set design. As for the design represented by the decorations 56, as shown in FIG. 7, the letters W represented by the pair of decorations 56 can also be displayed on the surface of the slider stopper 58. Furthermore, the V-shaped decorations 56 of the respective slide fastener elements 54 are formed in shapes that do not interfere with each other when the engagement and disengagement are performed by the slider 20. The other structures are the same as those of the first embodiment, and the operation of the engagement and disengagement of the respective slide fastener elements 54 is also the same. Figure 7

[0067] With the slide fastener 50 of the embodiment, the decorations 56 symmetrical with each other are formed on the surface side of the slide fastener element 54, so the design freedom of a product in which the slide fastener 50 is installed is improved, and a product having higher fashionability can be formed.

[0068] Next, the slide fastener 60 of the third embodiment of the present application will be described below. Here, the same symbols are attached to the structures common to those of the first embodiment, and the description will be simplified. As shown in FIG. 8, the slide fastener element 64 of the embodiment has a tape mounting portion 26 mounted to the slide fastener tape 12, a base end portion 28 integrally formed continuously from the tape mounting portion 26, and an engagement portion 24 as a combination portion extending from the base end portion 28 and protruding from the core wire portion 12a of the slide fastener tape 12, and a decoration 66 is integrally formed on the side surface of the slide fastener element 64 on the surface side of the slide fastener 60. Figures 8-10 ​​As shown, the slider 64 of this embodiment has the tape attachment portion 26 attached to the slider tape 12, the base end portion 28 integrally formed in continuation from the tape attachment portion 26, and the engagement portion 24 as the combination portion extending from the base end portion 28 and protruding from the core wire portion 12a of the slider tape 12, and the decoration 66 is integrally formed on the side surface of the slider 64 on the surface side of the slider 60.

[0069] The decoration 66 is integrally formed on the side surface on the surface side of the tape attachment portion 26, and forms a substantially parallelogram shape when viewed from the front side. In the pair of sliders 64, since the center lines 26CL of the tape attachment portions 26 are formed in coincidence with each other, the decorations 66 can be configured to be point-symmetrically present with respect to the center line orthogonal to the surface of the slider tape 12 in any combination. For example, in addition to the design in which one concept is constituted by the left and right pair of decorations 66, the design in which one concept is constituted by the decorations 66 of more than three sliders 64 on the left and right can be formed. The decoration 66 of each slider 64 is formed in a shape that does not interfere with each other when engaging and disengaging by the slider 20. The other structures are the same as those of the first embodiment, and the operations of engaging and disengaging of each slider 64 are also the same.

[0070] With the slider 60 of the embodiment, the point-symmetric decoration 66 is formed on the surface side of the slider 64, and the design freedom of the product to which the slider 60 is attached is improved, and the desired design can be constituted by any number of combinations of sliders 64, and a product of a higher fashion type can be formed.

[0071] Further, the slider of the present application is not limited to the embodiment, and the shape of the slider, the presence or absence of the decoration, and the shape of the decoration can be appropriately changed. The material or the manufacturing method of the slider, the shape of the tape attachment portion, and the like can also be appropriately changed. The decoration provided to the slider can also be given an arbitrary shape, and a character, a symbol, or another figure can be given, and in addition to being symmetrically formed by a pair of sliders, it can also be asymmetric. Furthermore, in addition to forming one design by the decorations of a pair of sliders, one design can also be formed by more than three sliders, and the decoration can also be formed by a plurality of designs independent of each other.

Claims

1. A zipper comprising a pair of left and right zipper tapes (12) and a pair of zipper teeth (16), the pair of zipper teeth (16) comprising a plurality of zipper teeth (14) mounted along the length of the zipper tapes (12) to opposing core portions (12a) of the zipper tapes (12), wherein a zipper pull (20) for combining the zipper teeth (14) is slidably mounted on the pair of zipper teeth (16), the zipper (10) being characterized in that, The zipper tooth (14) has a belt mounting portion (26) mounted on the zipper tape (12) and an engagement portion (24) extending from the belt mounting portion (26) via a base end portion (28) and protruding from the core wire portion (12a) of the zipper tape (12). When the mounting part (26) is installed on the zipper tape (12), its center line (26CL) orthogonal to the length direction of the zipper tape (12) and the center line (24CL) orthogonal to the length direction of the engaging part (24) are not aligned. The engaging portion (24) has a pair of engaging surfaces (24a, 24b) that intersect the longitudinal direction of the zipper tape (12) mounted on the belt mounting portion (26). On the engaging surfaces (24a, 24b), there are combined protrusions (22, 40) protruding from the engaging surfaces (24a, 24b) and wall portions (36, 42) formed on the belt mounting portion (26) side relative to the combined protrusions (22, 40) and surrounding the combined protrusions (22, 40) separately. A receiving space (38, 44) is provided between the combined protrusions (22, 40) and the wall portions (36, 42). With the left and right zipper teeth (14) of the pair of left and right zipper tapes (12) combined, the combined protrusion (22, 40) of one of the pair of left and right zipper teeth (14) is inserted into and locked into the receiving space (38, 44) of the other. The wall portion (36, 42) is a plate-shaped protrusion that protrudes from the pair of meshing surfaces (24a, 24b) in the Z-axis direction, which is the length direction of the zipper tape. The two surfaces of the plate-shaped protrusion are continuous with the base end face (28a) of the base end portion (28) and the pair of meshing surfaces (24a, 24b). The top surface of the wall portion (36) that is opposite to the pair of meshing surfaces (24a, 24b) is located near the middle of the height of the base end face (28a).

2. The zipper according to claim 1, wherein, When the left and right zipper teeth (14) of the pair of zipper tapes (12) are combined, the center line (26CL) of the tape mounting part (26) of the pair of zipper teeth (14) is generally aligned with each other with respect to the length direction of the zipper tape (12).

3. The zipper according to claim 1 or 2, wherein, The pair of engagement surfaces (24a, 24b) of the engagement portion (24) that intersect the length direction of the zipper tape (12) held by the tape mounting portion (26) and the pair of tape mounting surfaces (26a, 26b) of the tape mounting portion (26) that intersect the length direction of the zipper tape (12) are staggered. The base end portion (28) located between the engagement portion (24) and the tape mounting portion (26) has an inclined base end surface (28a, 28c) that connects the engagement surfaces (24a, 24b) of the engagement portion (24) and the tape mounting surfaces (26a, 26b) of the tape mounting portion (26). The base end surface (28a, 28c) faces the receiving space (38, 44).

4. The zipper according to claim 3, wherein, The base end face (28a, 28c) of the base end (28) is continuous with the pair of wall portions (36, 42) to form a U-shape that opens toward the combined protrusion (22, 40).

5. The zipper according to claim 1 or 2, wherein, The left and right zipper teeth (14) are formed symmetrically about the center axis of the thickness direction of the zipper tape (12).

6. The zipper according to claim 1 or 2, wherein, The zipper teeth (14) are made of metal formed by die casting.

7. The zipper according to claim 1 or 2, wherein, A decorative element (56, 66) of a predetermined shape is provided on the surface of a pair of feet (30) of the zipper teeth (14).

8. The zipper according to claim 7, wherein, The decoration (56) is arranged symmetrically with respect to the center line which is parallel to the length direction of the pair of zipper straps (12).

9. The zipper according to claim 7, wherein, The decoration (56) forms a design in a pair of zipper teeth (14) that are combined with each other.

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