JP2006149707A - Slide fastener chain - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide fastener chain which is flexible, resistant to horizontal pull and under pressure in an engaged condition and is high-quality. <P>SOLUTION: A resin fastener elements 2 are molded on a side edge section 5 of a fastener tape 3 into a fastener chain 1. The fastener element 2 has a shank fixed to the fastener tape 3, a cervix 8 which has concave side faces and extends forward from the shank 9 and an engaging head 7 formed at a leading front of the cervix 8, furthermore, in a style, engaging prongs 12 are formed in both sides of the cervix 8, engaging grooves 11 which are engaged with the engaging prongs 12 are formed in both sides of the engaging head 7 and the engaging grooves 11 are formed in both full length sides of the engaging head 7, or in another style, the engaging grooves 11 are formed in both sides of the front of the engaging head 7, the engaging prongs 12 which can engage with the engaging grooves 11 are formed at both sides of the cervix 8 and the engaging prongs 12 projects out through the side face of the shank 9. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a slide chain in which a fastener element is attached to an edge of a fastener tape by injection molding using a thermoplastic resin.

  As shown in FIG. 7, an injection type fastener element in a conventional slide fastener chain is attached to the core string existing at the edge of the fastener tape by using a thermoplastic resin by means of injection molding. A concave engagement recess is provided in the middle layer of the corner portion at the tip of the enormous meshing head, and an engagement protrusion that can be inserted into the engagement recess is provided in the base middle layer of the concave neck adjacent to the engagement head. There is known a fastener chain provided with an injection type fastener element that meshes right and left fastener elements.

Further, as shown in FIG. 8, the fastener element injection-molded on the edge of the fastener tape has an engaging recess formed in the middle layer of the corner portion of the engaging head of the fastener element having the shape shown in FIG. An engagement groove that has a concave groove shape is provided over the entire width of the front half of the neck, and an engagement protrusion that can be inserted into the engagement recess is provided in the base middle layer of the neck, and an injection type fastener element that engages the left and right fastener elements is attached Zipper chain is known.
Japanese Utility Model Publication No. 51-131402

  7 and 8 described above, the left and right fastener elements at the time of meshing are close to each other, there is no gap between them, and the fastener chain is to be folded back and forth in the longitudinal direction. It is hard and cannot be folded easily, and therefore the fastener chain cannot be made flexible. Therefore, it is thought that it is sufficient to increase the mounting pitch of the fastener element in order to provide a gap in the meshing part of the left and right fastener elements, but even if the gap is formed by simply increasing the pitch, the lateral pulling strength of the fastener chain is increased. There are problems such as lowering and strength of pushing up the fastener chain, for example, if the operation of pushing up the fastener element from the back side of the fastener chain is performed, the engagement of the fastener element is easily released and the left and right fastener stringers are separated.

  The present invention has been invented in view of the above-mentioned problems, and the inventions according to claims 1 and 2 are both molded resin type fastener elements formed from a massive meshing head and a concave neck. Is formed into a fastener tape at a fixed pitch, and a wide gap can be installed between the left and right fastener elements with a simple structure when meshing, and the fastener chain can be easily bent and deformed in the longitudinal direction to the front and back, making it flexible This is a molded resin type that can be finished into a good quality fastener chain that can not be separated and divided easily. The main object is to provide a fastener chain with a fastener element.

  In order to achieve the above object, the invention according to claim 1 of the present invention is such that a fastener chain 1 is attached to a side edge portion 5 of a fastener tape 3 with a plurality of molded resin fastener elements 2 at a predetermined pitch. The fastener element 2 is a rectangular parallelepiped leg 9 fixed in such a manner as to sandwich the core 6 existing on the side edge 5 of the fastener tape 3, and extends forward from the leg 9. It is formed from a neck portion 8 having a concave side surface and an enormous meshing head 7 installed at the tip of the neck portion 8, and engaging projections 12 project from both sides of the neck portion 8. The surface is provided with a concave engagement groove 11 into which a mating mating engagement protrusion 12 can be fitted, and this engagement groove 11 is mainly composed of a slide fastener chain extending over the entire length of both sides of the meshing head 7. is there.

  According to the second aspect of the present invention, the fastener chain 1 is formed from a pair of left and right fastener stringers 4 by attaching a plurality of molded resin fastener elements 2 to the side edges 5 of the fastener tape 3 at a predetermined pitch. A rectangular parallelepiped leg 9 fixed to sandwich the core 6 existing on the side edge 5 of the fastener tape 3, a neck 8 extending forward from the leg 9 and having a concave side surface, and the neck 8 is formed from an enormous meshing head 7 installed at the tip of 8, and a concave engagement groove 11 is extended on the front surface of the meshing head 7 over the entire width in the left-right direction of the meshing head 7. Engagement protrusions 12 that can be engaged with the engagement grooves 11 of the mating counterparts are provided on both sides, and a slide fastener chain provided in such a manner that the engagement protrusions 12 protrude sideward from the side surfaces of the leg portions 9 is the main configuration. Is a thing

  As an effect of the invention of this application, the invention according to claim 1 is a fastener chain having a pair of left and right fastener stringers in which a plurality of molded resin fastener elements are attached to side edges of a fastener tape at a predetermined pitch. Has a leg portion that is fixed to the fastener tape, a side-recessed neck portion that extends forward from the leg portion, and a massive meshing head that is installed at the tip of the neck portion, and engaging projections on both sides of the neck portion And provided with concave engaging grooves on both side surfaces of the meshing head to engage the engaging projections. The engaging grooves extend over the entire length of both sides of the meshing head, so that the engagement projections mesh with the mating counterpart. It can be extended deeply into the engagement groove formed on the side surface of the head, as long as it does not collide with the mating engagement protrusion, and can be expanded between the fastener elements of a pair of left and right fastener stringers. Can easily form a wide gap as compared with conventional products, highly flexible, and is not to elicit a fastener chain cracking phenomenon, there is an effect that can be finished in a good fastener chain quality.

  According to a second aspect of the present invention, there is provided a fastener chain having a pair of left and right fastener stringers in which a plurality of molded resin fastener elements are attached to a side edge portion of the fastener tape at a predetermined pitch, and the fastener element is fixed to the fastener tape. And a laterally concave neck extending forward from the leg, and a massive meshing head installed at the tip of the neck, with the full width of the meshing head in the left-right direction on the front of the meshing head A concave engaging groove extending over the neck, engaging protrusions that fit into the engaging groove are provided on both sides of the neck, and the engaging protrusion protrudes laterally from the side surface of the leg. Can be extended deeply to the side with respect to the engaging groove formed on the front face of the mating mating head, and it is wider than the conventional product between the fastener elements of a pair of left and right fastener stringers. A gap can be easily formed, highly flexible and does not elicit the fastener chain cracking phenomenon, there is an effect that can be finished in a good fastener chain quality.

  The molded fastener element used in the slide fastener chain of the present invention is an injection type that is injection-molded onto the core 6 existing on the side edge 5 of the fastener tape 3 by injection molding means using a thermoplastic resin as a material. The fastener element 2 is provided with a massive meshing head 7 on the front end side, and a concave neck 8 constricted adjacent to the meshing head 7 is formed on the side surface, adjacent to the neck 8. A rectangular parallelepiped leg 9 is integrally formed so as to sandwich the core 6 of the side edge 5 of the fastener tape 3 from above and below.

  The injection-molded type fastener element 2 used in the fastener chain 1 as the first embodiment has a side middle layer portion on the leg portion 9 side in the neck portion 8 within the width of the meshing head portion 7 and the distal end side of the meshing head portion 7. The engaging projections 12 having a convex cross section projecting to the engagement head 11 are provided, and the engaging grooves 11 having a concave cross section capable of fitting the engaging projections 12 to be engaged with each other are provided in the middle layers on both sides of the engagement head 7. A recess is formed in the width of the neck portion 8 up to the tip of the meshing head 7 to form a gap on the tip side of the engagement protrusion 12.

  The fastener element 2 according to the second embodiment has a square cross-sectional engagement projecting in the lateral middle layer portion on the leg portion 9 side of the neck portion 8 in the lateral direction, that is, in the longitudinal direction of the fastener chain 1 from the side surface of the meshing head 7. Protrusions 12 are provided, and the engagement head 7 is provided with an engagement groove 11 having a concave cross section into which the engagement protrusions 12 can be inserted in the front half on the engagement tip side.

  The fastener element made of molding resin used for the fastener chain of Example 1 shown in FIGS. 1 to 3 is made by injection molding means using a thermoplastic resin such as polyamide, polyacetal, polypropylene, polybutylene terephthalate as a material of the fastener element 2. A pair of left and right fastener stringers 4 are formed by injection molding at predetermined pitches in a form that sandwiches a massive core portion 6 provided along the side edge portion 5 of the fastener tape 3 from above and below.

  The fastener element 2 is formed with a massive meshing head 7 at the tip when viewed in plan, and a concave neck 8 with its side constricted on the inside thereof, and a rectangular leg 9 adjacent to the neck 8. Form. The fastener element 2 has a constant thickness, and the engaging groove 11 having a concave groove in cross section that can engage the engaging protrusion 12 of the mating fastener element 2 with the middle layer portion in the thickness direction on both side surfaces of the engaging head 7. The engaging groove 11 is recessed in the side face of the meshing head 7 with the width of the neck portion 8 over its entire length. The concave neck portion 8 is provided with an engaging projection 12 having a convex cross section projecting toward the engaging groove 11 of the meshing head 7 within the range of the width of the meshing head 7 at the base on the leg 9 side. The engaging protrusion 12 protrudes long in the length direction of the fastener element 2 along the extension line of the side surface of the leg portion 9, and the protruding amount is in contact with the engaging protrusion 12 of the fastener element 2 to be engaged with each other. When the engagement protrusion 12 is fitted into the engagement groove 11 without being obstructed, it is provided within a range in which required lateral pulling strength and push-up strength can be secured.

  If a specific example is shown, if the width of the meshing head 7 is W, the fastener element 2 is formed so that the neck 8 is half the width of the meshing head 7, that is, 1/2 W, and the width of the leg 9 is It may be the same width as the width of the meshing head 7 or a larger width. The fastener element 2 is formed at a pitch of about 1.7 W so as to sandwich the core portion 6 of the side edge portion 5 of the fastener tape 3, so that the engagement portion between the left and right fastener elements 2 is more spacious than the conventional product. A gap can be formed. For example, in the case of a conventional product, since the pitch is about 1.5 W, a wide gap can be surely formed. In addition, in order to cope with the wide gap, the engagement protrusion 12 having a larger protrusion amount than the conventional product is formed on the leg portion 9 from the front end formed on the side surface of the meshing head 7 toward the deep engagement groove 11. It is characterized by a single protrusion at the front end.

  By providing the above feature, in the fastener chain 1 in which the gap between the fastener elements 2 is wide, the engagement amount between the engagement groove 11 and the engagement protrusion 12, that is, the engagement groove 11 and the engagement protrusion 12 are The area overlapping in the front and back direction of the fastener element 2 can be obtained in the length direction of the fastener element 2 with the same size or larger than that of the conventional fastener element 2. As a result, as shown in FIG. 3, even when the fastener chain 1 is bent in the front and back direction, the engagement protrusion 12 does not come out of the engagement groove 11, and the fastener chain 1 having flexibility is finished. be able to.

  The fastener element made of molded resin used for the fastener chain of Example 2 shown in FIGS. 4 to 6 is formed on the side edge 5 of the fastener tape 3 by injection molding means using the thermoplastic resin as in the previous example. A pair of left and right fastener stringers 4 are formed by injection molding at predetermined pitches in a form that sandwiches the enormous core portion 6 provided along the top and bottom.

  The fastener element 2 forms an enormous meshing head 7 as in the previous example, and has a concave neck 8 with its side constricted inside, and a rectangular leg 9 adjacent to the neck 8. Integrally formed. An engagement groove 11 having a cross-sectional groove in which the engagement protrusion 12 of the mating fastener element 2 can be fitted is provided in the middle layer in the thickness direction on the front surface of the engagement head 7. The engaging groove 11 is recessed over the entire length in the width direction of the meshing head 7, and the depth thereof is a range in which the required lateral pulling strength and pushing strength can be ensured when the engaging protrusion 12 is fitted into the engaging groove 11. Can be set freely. A shape in which an engagement protrusion 12 that can be fitted into the engagement groove 11 is protruded to the side of the leg 9 side of the neck 8 from the side of the leg 9, that is, a shape that protrudes to the side of the meshing head 7. The engagement protrusion 12 having a square cross section is formed, and a gap is formed on the side of the engagement protrusion 12. The engagement protrusion 12 is positioned closer to the meshing head 7 than the core portion 6, and protrudes longer along the core portion 6 in the width direction of the fastener element 2. Further, the position where the engaging protrusion 12 overlaps the core portion 6, that is, the engaging protrusion 12 and the core portion 6 may be fixedly integrated.

  If a specific example is shown, if the width of the meshing head 7 is W as in the previous example, the neck portion 8 is 1/2 W at a pitch of about 1.7 W, and the leg portion 9 is on the side of the fastener tape 3. By performing injection molding on the edge portion 5, it is possible to form a gap that is more spacious than the conventional product in the meshing portions of the left and right fastener elements 2. Therefore, since the gap is wide, the engagement protrusion 12 is protruded laterally from the engagement head 7 and can be inserted into the engagement groove 11 in order to securely maintain the engagement state. By providing the above feature, in the fastener chain 1 in which the gap between the fastener elements 2 is wide, the engagement amount between the engagement groove 11 and the engagement protrusion 12, that is, the engagement groove 11 and the engagement protrusion 12 are The area overlapping in the front and back direction of the fastener element 2 can be obtained in the width direction of the fastener element 2 with the same size or larger than that of the conventional fastener element 2. As a result, as shown in FIG. 6, even when the fastener chain 1 is bent in the front and back direction, the engagement protrusion 12 does not come out of the engagement groove 11, and the fastener chain 1 having flexibility is finished. be able to.

  The fastener chain provided with the molded resin fastener element according to the present invention can be used for clothing plackets and other clothing openings, and can be used by attaching to opening and closing parts of all products such as bags and bags.

1 is a perspective view of a molding type fastener element based on Example 1. FIG. It is a front view which shows the principal part of the fastener chain provided with the same type of fastener element. It is a longitudinal cross-sectional view which shows the bending state of fastener chain same as the above. 6 is a perspective view of a molding type fastener element based on Example 2. FIG. It is a front view which shows the principal part of the fastener chain provided with the same type of fastener element. It is a longitudinal cross-sectional view which shows the bending state of fastener chain same as the above. It is a front view which shows the principal part of a well-known fastener chain. It is a front view which shows the principal part of another well-known fastener chain.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fastener chain 2 Fastener element 3 Fastener tape 4 Fastener stringer 5 Side edge 7 Interlocking head 8 Neck 9 Leg 11 Engaging groove 12 Engaging protrusion

Claims (2)

  In a fastener chain 1 having a pair of left and right fastener stringers 4 in which a plurality of molded resin fastener elements 2 are attached to side edges 5 of the fastener tape 3 at a predetermined pitch, the leg portions to which the fastener elements 2 are fixed to the fastener tape 3 9, a neck portion 8 having a concave side surface extending forward from the leg portion 9, and a massive meshing head portion 7 installed at the tip of the neck portion 8, and engaging protrusions 12 are provided on both sides of the neck portion 8. The slide is characterized in that concave engagement grooves 11 into which the engagement protrusions 12 are fitted are provided on both side surfaces of the meshing head 7, and the engagement grooves 11 extend over the entire length of both sides of the meshing head 7. Fastener chain.   In a fastener chain 1 having a pair of left and right fastener stringers 4 in which a plurality of molded resin fastener elements 2 are attached to side edges 5 of the fastener tape 3 at a predetermined pitch, legs 9 to which the fastener elements 2 are fixed to the fastener tape 3 A neck portion 8 having a concave side surface extending forward from the leg portion 9 and a massive meshing head portion 7 installed at the tip of the neck portion 8. The concave engaging groove 11 is extended over the entire width in the left-right direction, and engaging projections 12 are provided on both sides of the neck portion 8 to fit into the engaging groove 11, and the engaging projection 12 is on the side of the side of the leg portion 9. Slide fastener chain, characterized by protruding toward the side.

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