JP2007021023A - Element for slide fastener - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an element for a slide fastener, which is injection molded and firmly fixed on the opposite side edge of a fastener tape in a stable condition. <P>SOLUTION: In the slide fastener element, an injection type plastic fastener element 1 is attached to a core section 3 fixed to the opposite side edge 4 of a fastener tape 2 at a regular interval, the fastener element 1 forms a side face 14 almost as thick as the core section 3 and side faces 13 which have the same elevation and depression on the upper/lower sides of the side face 14 in an adjacent opposite surface 12 located in the longitudinal direction of the fastener tape 2, then, the side face 13 and the side face 14 have an angle difference of 5-10 degrees and the fastener element 1 is firmly fixed in a stable condition. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an element for a slide fastener in which an injection type fastener element is attached on a core portion of opposed edges of a pair of fastener tapes by means of injection molding using synthetic resin.

Conventionally, an injection type fastener element is attached by injection molding means using synthetic resin to a core portion formed on the opposite side edge of a pair of fastener tapes, and the fastener element has a core in order to make it easy to extract a mold for injection molding. As shown in FIG. 7, it is known to injection-mold a fastener element into a fastener tape with a draft angle with respect to the center line of the part.
US Pat. No. 2,491,198

  In the injection type fastener element shown in FIG. 7 described above, when injection molding is performed on a fastener tape, a draft is applied from the center line of the core portion of the fastener element in order to make it easy to extract the mold after injection molding. Yes. The attachment strength of this type of fastener element is greatly influenced by adhesion to the core. Applying a draft from the center of the core composed of a core string or the like formed on the opposite side edge of the fastener tape reduces the bonding area to the core, so that the fastener element is strong against the core of the fastener tape. There is a problem that it is difficult to improve the meshing strength of the fastener element.

  The present invention has been invented in view of the above-mentioned problems, and the invention according to claim 1 is an injection-type fastener for a core portion formed of a core string formed on the opposite side edge of the fastener tape. The main object is to provide a slide fastener element that improves the productivity of a slide fastener in which the element is injection-molded and attached with the maximum mounting strength, and the fastener element can be easily removed from an injection mold. Is the purpose.

  In addition to the object of the invention of claim 1, the invention described in claim 2 is provided with a mounting portion for obtaining the maximum mounting strength with respect to the core portion formed on the opposite side edge of the fastener tape with the injection type fastener element. An object of the present invention is to provide a slide fastener element in which a side surface corresponding to a thickness substantially equal to the core portion on the side surface is formed on a vertical surface and the fastener element is firmly attached.

  In addition to the object of the invention described in claim 3, the invention described in claim 3 improves the mounting strength of the injection type fastener element formed on the opposite side edge of the fastener tape with respect to the core and removes the mold for injection molding. To provide an element for a slide fastener having an angle difference between a side surface corresponding to a thickness substantially equal to that of the core portion on the side surface of the mounting portion and an upper and lower side surface of the core portion so that the operation can be easily performed. Is the purpose.

  In order to achieve the above object, the invention according to claim 1 of the present invention is attached to the core portion 3 fixed to the opposite side edge 4 of the fastener tape 2 at a constant interval, and has a massive engagement at the tip. In the fastener element 1 in which the head portion 6 is formed, the neck portion 7 continuously confined to the meshing head portion 6 is formed, and the rectangular attachment portion 8 is formed continuously to the neck portion 7, the attachment portion 8 of the fastener element 1 In the longitudinal direction of the fastener tape 2, the side surface 13 and the side surface 14 are continuously provided in the thickness direction of the mounting portion 8, and the same as the upper portion and the lower portion of the core portion 3 of the fastener tape 2. The main component is a slide fastener element in which an angle elevation angle and a depression angle side surface 13 are formed and an angle difference is provided between the side surface 14.

  In addition to the configuration of the invention described in claim 1, the injection type fastener element 1 has a thickness substantially equal to that of the core portion 3 in the central portion on the adjacent facing surface 12 in the attachment portion 8. This is a slide fastener element in which the corresponding side surface 14 is disposed so as to form a vertical surface with respect to the fastener tape 2.

  In addition to the configuration of the invention described in claim 1, the invention according to claim 3 is formed on the upper side and the lower side of the core part 3 formed on the adjacent opposing surface 12 of the attachment part 8. An angle difference formed between the side surface 13 and the side surface 14 corresponding to a thickness substantially equal to that of the core portion 3 of the central portion is preferably a slide fastener element of 5 to 10 degrees.

  As an effect of the present invention, the invention according to claim 1 is attached to the core portion fixed to the opposite side edge of the fastener tape at a constant interval, and has an enormous meshing head, a constricted neck, and a square attachment. In the fastener element made of synthetic resin formed from the portion, the side surface and the side surface are continuously formed in the thickness direction of the mounting portion on the adjacent facing surface in the mounting portion of the adjacent fastener element, and the side surface is above the core portion. By forming an elevation angle and depression angle on the lower side and making an angle difference between the central side surface, the continuously formed side surfaces are crossed, so the core part fixed to the opposite side edge of the fastener tape On the other hand, the bonding area with respect to the core portion can be increased more than that provided with a draft from the center, and the injection type fastener element can be firmly attached.

  In addition to the effect of the invention of claim 1, the invention according to claim 2 is such that the fastener element has a side surface corresponding to a thickness substantially equal to the core portion on the adjacent facing surface in the attachment portion, perpendicular to the fastener tape. By arranging, it is possible to maximize the adhesion area to the core part to which the fastener element is attached, and there is an effect that the injection type fastener element can be attached to the core part of the fastener tape very firmly and efficiently.

  The invention described in claim 3 corresponds to the effect of the invention described in claim 1, and the fastener element corresponds to the upper and lower side surfaces formed on the adjacent opposing surfaces of the mounting portion and the thickness substantially equal to the core portion. By setting the angle difference formed between the side surface to 5 to 10 degrees, there is an effect that the molding die can be extracted very easily and efficiently from the core portion of the fastener tape of the injection type fastener, etc. The effect exhibited by the present invention is extremely remarkable.

  1 to 3, the slide fastener element injects the fastener element 1 by injection molding means using synthetic resin for the core portion 3 such as a core string attached to the opposite side edge 4 of the fastener tape 2 as shown in FIGS. Mold. The fastener element 1 is provided with an enormous meshing head 6 at the tip, and a concave groove 9 directed in the longitudinal direction of the fastener chain is provided in the meshing head 6 so as to be continuously confined to the meshing head. 7 is provided with a projection 10 as an engagement portion 15 that engages with a concave groove 9 formed in the mating head 6 of the other party.

  A square-shaped attachment portion 8 is provided continuously to the neck portion 7 and attached to the core portion 3 formed on the opposite side edge 4 of the fastener tape 2. The attachment portion 8 is a side surface in the longitudinal direction of the fastener chain, that is, the adjacent opposite surface 12. , The side surface 13 having the same angle of elevation and depression is formed on the upper side and the lower side, and the side surface 14 corresponding to the middle of the side surface 13, that is, substantially the same thickness as the core 3 of the fastener tape 2, In order to form the draft of the molding die on the upper side and the lower side of the core 3, an elevation angle and depression angle side surface 13 is formed on the upper side and the lower side of the core portion 3. An angle difference is maintained, and this angle difference is about 2 to 10 degrees with respect to the side surface 14 and is preferably formed at 5 to 10 degrees in consideration of the extraction effect. As a result, the fastener element 1 is strongly attached to the core portion 3. Fixed to and the fastener element 1 can be pulled out molding die easily, it is possible to improve the fasteners productivity.

  The adjacent facing surface 12 is formed of a side surface 14 that contacts the surface of the fastener tape 2 and a side surface 13 that continues to the upper side and the lower side of the side surface 14, and the attachment portion 8 has the same thickness on the front and back surfaces of the fastener tape 2. The attachment portion 8 is thicker than the core portion 3, and the side surface 14 formed from a vertical surface is formed to have a thickness substantially equal to that of the core portion 3. Side surfaces 13 formed on the upper side and the lower side of the core portion 3 in the adjacent facing surface 12 are formed so that the thickness of the attachment portion 8 decreases as the distance from the fastener tape 2 increases. As shown in FIG. 3, it has an octagonal shape with the fastener tape 2 interposed therebetween.

  As shown in FIG. 5, another type of the fastener element 1 is an injection-type fastener element 1 having a thick surface on the front side and an enormous meshing head 6 at the tip, which is continuously bound to the meshing head 6. The neck portion 7 is provided, and a rectangular attachment portion 8 for attaching to the fastener tape 2 is provided continuously to the neck portion 7. The back side is provided with a support portion 11 having a thin thickness and a triangular tip, and a rectangular attachment portion 8 for being attached to the fastener tape 2 continuously to the support portion 11, and the meshing head 6 and the support portion 11. In addition, an engaging portion 15 that engages with the mating engaging portion 15 is formed at a step portion between the neck portion 7 and the support portion 11.

  A side surface 13 having the same angle of elevation and depression is formed on the adjacent facing surface 12 located in the longitudinal direction of the fastener chain on the attachment portion 8 in the fastener element 1 of this form on the upper side and the lower side of the core portion 3. Is formed such that the side surface 14 is perpendicular to the fastener tape 2, and an angle difference of 2 to 10 degrees, preferably 5 to 10 degrees is provided between the upper and lower side surfaces 13 and the side surface 14 of the central portion. Is.

  As shown in FIG. 6, the fastener element 1 is another type of the injection-type fastener element 1, in which the front surface side and the back surface side have a half-half thickness and the front surface side has a support portion 11 having a triangular shape. A rectangular attachment portion 8 for providing the fastener tape 2 continuously to the support portion 11 is provided. The back side is provided with a meshing head 6 whose tip has an enormous shape, a neck part 7 continuously confined to the meshing head 6, and a rectangular attachment part for attaching to the fastener tape 2 continuously to the neck part 7. 8 is formed, and the engaging portion 15 that engages with the mating engaging portion 15 is formed at the step portion between the supporting portion 11 and the meshing head 6 and between the supporting portion 11 and the neck portion 7.

  A side surface 13 having the same angle of elevation and depression is formed on the adjacent facing surface 12 located in the longitudinal direction of the fastener chain on the attachment portion 8 in the fastener element 1 of this form on the upper side and the lower side of the core portion 3. Is formed such that the side surface 14 is perpendicular to the fastener tape 2, and an angle difference of 2 to 10 degrees, preferably 5 to 10 degrees is provided between the upper and lower side surfaces 13 and the side surface 14 of the central portion. Is.

  The slide fastener element according to the present invention will be described. The slide fastener element according to the first embodiment shown in FIGS. 1 to 3 has a core portion 3 to which a core string formed on the opposing side edges 4 of the pair of left and right fastener tapes 2 is attached. The fastener tape 2 and the core 3 are woven or knitted from polyamide fiber or polyester fiber. A fastener 3 is attached to the core 3 formed on the opposite side edge 4 of the fastener tape 2 by injection molding means using a synthetic resin such as polyamide, polyacetal, polypropylene, polybutylene terephthalate, etc. by injection molding means. Finish.

  The fastener element 1 injection-molded on the core 3 formed on the opposite side edge 4 of the fastener tape 2 protrudes from the opposite side edge 4 of the fastener tape 2 to the front surface as shown in FIG. A concave groove 9 is provided along the longitudinal direction of the fastener chain on the front surface of the meshing head 6 to accommodate and engage the projection 10 of the mating counterpart fastener element 1. A neck portion 7 confined to the base portion of the meshing head 6 is continuously provided, and a rectangular parallelepiped projection 10 is projected from the inner wall surface of the neck portion 7, that is, the wall surface in front of the mounting portion 8, so that the mating mating fastener It is accommodated in the concave groove 9 of the element 1 and engaged. As shown in FIG. 2, the protrusion 10 is formed in a shape protruding from the side surface of the attachment portion 8.

  A rectangular attachment portion 8 is provided following the neck portion 7, and the attachment portion 8 is attached to the core portion 3 formed on the opposite side edge 4 of the fastener tape 2 by the attachment portion 8. At the time of attachment, side surfaces 13 having the same angle of elevation and depression are formed on the upper and lower sides of the core portion 3 on the adjacent facing surface 12 located in the longitudinal direction of the fastener chain in the attachment portion 8, and the central portion, that is, the core portion. 3 is formed with a side surface 14 having a vertical surface with respect to the fastener tape 2, and an angle difference of 2 to 10 degrees, preferably an angle difference of 5 to 10 degrees is provided between the side surface 13 and the side surface 14. .

  The fact that the angle difference between the upper side surface 13 and the lower side surface 13 of the mounting portion 8 and the side surface 14 of the center portion corresponding to the core portion 3 is such that the fastener element 1 faces the fastener tape 2. Since the area attached to the core part 3 can be secured from the core part 3 formed on the side edge 4 rather than being attached with a certain draft angle, it can be attached extremely firmly, and in addition, the elevation angle and depression angle of the same angle on the side surface 13 Are provided and a draft angle is provided, so that the fastener element 1 can be efficiently extracted from the mold for injection molding.

  In the modified example shown in FIG. 4, the side surface 14 corresponding to the thickness of the core portion 3 of the adjacent facing surface 12 in the injection type fastener element 1 is also slightly inclined up and down from the center line. Thus, the mold can be easily removed. Of course, an angle difference is also provided between the side surface 14 corresponding to the core portion 3 and the upper and lower side surfaces 13 thereof.

  In the slide fastener element of Example 2 shown in FIG. 5, the surface side of the injection-type fastener element 1 is formed so that the thickness of the fastener element 1 is thicker, and an engagement head 6 is provided at its tip, which is enormous. A neck portion 7 is provided after the meshing head portion 6, and a rectangular attachment portion 8 for attachment to the core portion 3 of the fastener tape 2 is provided following the neck portion. On the back surface side of the fastener element 1, the fastener element 1 is formed with a thin thickness, a support portion 11 having a triangular shape is provided at the tip thereof, and a rectangular attachment portion 8 is provided following the support portion 11. An engaging portion 15 that can engage with the engaging portion 15 of the mating fastener element 1 is formed in a staggered step formed between one meshing head 6 and the supporting portion 11 and between the neck portion 7 and the supporting portion 11. To do.

  A side surface 13 having an elevation angle and a depression angle that form the same angle above and below the core portion 3 is formed on the adjacent facing surface 12 located in the longitudinal direction of the fastener chain at the attachment portion 8 in the fastener element 1. The side surface 14 corresponding to substantially the same thickness is formed so as to exhibit a vertical surface with respect to the fastener tape 2, and 2 to 10 between the side surface 13 above and below the core portion 3 and the side surface 14 at the center portion. An angle difference of 5 to 10 degrees is preferably given, and by attaching this angle difference, the fastener element 1 can be attached extremely firmly to the core 3 formed on the opposite side edge 4 of the fastener tape 2, In addition, the fastener element 1 can be efficiently and easily extracted from the injection mold by providing the side surface 13 with the same elevation angle and depression angle and providing a draft angle.

  In the slide fastener element of Example 3 shown in FIG. 6, the front side and the back side of the injection type fastener element 1 are half the thickness of the fastener element 1, and the front side of the support portion 11 has a triangular shape at the tip. And a rectangular attachment portion 8 for attachment to the fastener tape 2 is provided following the support portion 11. The back side is provided with a meshing head 6 having an enormous shape at the tip, a neck 7 that is constricted following the meshing head 6, and a rectangular mounting portion 8 that is attached to the fastener tape 2 following the neck 7. Provide. An engaging portion 15 that can be engaged with the mating engaging portion 15 is formed in a stepped portion formed between the supporting portion 11 and the meshing head 6 and between the supporting portion 11 and the neck portion 7.

  A side face 13 having the same angle of elevation and depression is formed above and below the core portion 3 on the adjacent facing surface 12 located in the longitudinal direction of the fastener chain at the attachment portion 8 of the fastener element 1. The side surface 14 corresponding to the equivalent thickness is formed so as to exhibit a vertical surface with respect to the fastener tape 2, and 2 to 10 degrees between the side surface 13 above and below the core portion 3 and the side surface 14 at the center portion. Preferably, an angle difference of 5 to 10 degrees is given, and by giving this angle difference, the fastener element 1 can be attached very firmly to the core part 3 formed on the opposite side edge 4 of the fastener tape 2. By providing the draft angle with the same elevation angle and depression angle above and below the side surface 13, the fastener element 1 can be efficiently and easily extracted from the mold for injection molding. .

  In the fastener element of the present invention, a fastener having an angle difference between the side surface of the central portion corresponding to the core portion and the side surface existing on the upper side and the lower side of the core portion on the adjacent opposing surface located in the longitudinal direction of the fastener chain The fastener chain formed from the element can be used for an opening portion of clothes such as a placket of clothes, and can be used for opening and closing portions of all products such as bags and bags.

1 is a perspective view of an injection-type fastener element based on Example 1. FIG. It is a front view of the fastener stringer which attached the fastener element same as the above. It is AA sectional drawing in FIG. 2 same as the above. It is a partial cross section figure of the principal part which shows the modification of a fastener element. 6 is a perspective view of an injection-type fastener element based on Example 2. FIG. 6 is a perspective view of an injection-type fastener element based on Example 3. FIG. It is a front view of the principal part of a well-known injection type fastener element.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fastener element 2 Fastener tape 3 Core part 6 Mating head 7 Neck part 8 Mounting part 12 Adjacent opposing surface 13 Side surface (upper side / lower side)
14 Side (center)

Claims (3)

  Made of synthetic resin, which is attached to the core portion 3 fixed to the opposite side edge 4 of the fastener tape 2 at a certain interval, and is formed from a massive meshing head portion 6, a constricted neck portion 7, and a rectangular attachment portion 8. In the fastener element 1, the side surface 13 and the side surface 14 are continuously formed in the thickness direction of the attachment portion 8 on the adjacent facing surface 12 in the attachment portion 8 of the adjacent fastener element 1, and the side surface 13 is above the core portion 3. An element for a slide fastener, wherein an elevation angle and a depression angle are formed on the lower side and an angle difference is provided between the side surface 14 and the lower side.   The slide element according to claim 1, wherein the fastener element (1) has a side surface (14) corresponding to a thickness substantially equal to that of the core part (3) perpendicular to the fastener tape (2) on the adjacent facing surface (12) in the attachment portion (8). element.   The fastener element 1 has an angle difference of 5 to 10 formed between the upper and lower side surfaces 13 formed on the adjacent facing surface 12 of the attachment portion 8 and the side surface 14 having a thickness substantially equal to that of the core portion 3. The element for a slide fastener according to claim 1, wherein the element is set to a degree.

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