WO2023176067A1

WO2023176067A1 - Fastener element for slide fastener, and slide fastener

Info

Publication number: WO2023176067A1
Application number: PCT/JP2022/045843
Authority: WO
Inventors: 潤志鷹
Original assignee: Ykk株式会社
Priority date: 2022-03-17
Filing date: 2022-12-13
Publication date: 2023-09-21
Also published as: TW202341895A

Abstract

A fastener element (21) for a metal slide fastener comprises: an interlocking head (30); and a first half (32) and a second half (33) that branch and extend from the interlocking head (30). The surfaces of the first half (32) and the second half (33) facing each other are provided with holding grooves (39) formed along the width direction of the fastener element. The branching of the first half (32) and the second half (33) is more toward the interlocking head than are the holding grooves (39a, 39b). As a result, it is possible to attach new fastener elements to missing fastener element sections at low cost and in a short time without sending the slide fastener to a repair shop, and also possible to achieve a satisfactory outer appearance.

Description

Fastener elements for slide fasteners and slide fasteners

The present invention relates to a fastener element for a slide fastener and a slide fastener.

Conventionally, when the left and right element rows are engaged and the slide fastener is closed, if excessive lateral pulling force is applied to the left and right fastener stringers, the fastener elements may come off the fastener tape or be damaged. Therefore, the portion of the missing fastener element that has fallen out or is damaged is repaired by attaching a new fastener element as an afterthought.

For example, Patent Document 1 describes a manual injection molding machine that can newly injection mold a fastener element in a portion where a fastener element is missing. Furthermore, in the fastener element described in Patent Document 2, in the part where the fastener element is damaged and missing, the fastener tape is sandwiched between a pair of element halves separated into the front side of the tape and the back side of the tape, and the bolt member and the nut are held together. The repair fastener element is attached by fastening using a mechanical fastening means such as a member.
Furthermore, a slide fastener is also known in which a mold is set on a fastener tape, and a metal fastener element is formed by die-casting by pouring molten metal into the mold (for example, see Patent Document 3).

Japan Utility Model Publication No. 53-71661 Japanese Patent No. 5430674 Japanese Patent Publication No. 5-123209

However, methods of producing metal elements and resin elements by die-casting or injection molding require special molding machines, and it is also necessary to send clothing that needs repair to a repair shop. There was a problem of increased time and cost.
In addition, the repair fastener element described in Patent Document 2 is a method for large slide fasteners that do not care about aesthetics, such as those for fishing nets, and is not preferred in applications where aesthetics are required, such as apparel, and improvements are desired. It was rare.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a fastener element that can be attached to a missing part of a fastener element in a short time and at low cost without sending it to a repair shop, and that also has a good quality. It is an object of the present invention to provide a fastener element for a slide fastener and a slide fastener that can have good appearance.

The above object of the present invention is achieved by the following configuration.
(1) A fastener element for a metal slide fastener,
comprising an interlocking head, and a first half and a second half that branch and extend,
The first half portion and the second half portion each include a clamping groove along the width direction of the fastener element on mutually opposing surfaces,
A fastener element for a slide fastener, wherein the first half part and the second half part are branched closer to the engaging head than the holding groove.
(2) The fastener element according to (1), wherein each of the clamping grooves is provided with an inner convex portion that projects into the space formed by the clamping grooves.
(3) further comprising a neck extending from the interlocking head and having a narrower width than the interlocking head;
At least one of the first half and the second half,
(1) or (2) branching from the widest part in the width direction of the fastener element in the interlocking head to the narrowest part in the width direction of the fastener element in the neck part; ) Fastener elements described in ).
(4) The fastener element according to (3), further comprising a protrusion that protrudes from the engagement head and is provided between the first half and the second half.
(5) The first half has a neck and a first leg that extends from the neck to the side opposite to the interlocking head and is wider than the neck, and/or the second The half part has a neck part and a second leg part extending from the neck part to a side opposite to the interlocking head part and being wider than the neck part,
A groove extending along the width direction is formed on the front surface of the engaging head,
At least one of the first half and the second half has a pair of grooves that extend in the width direction between the neck and the first or second leg and engage with the groove. The fastener element according to any one of (1) to (3), comprising a shoulder portion.
(6) The fastener element according to (5), wherein the shoulder portion is provided on either one of the first half portion and the second half portion.
(7) The inner protrusion is a cross that includes a first inner protrusion extending along the width direction and a second inner protrusion intersecting the first inner protrusion and extending along the longitudinal direction. The fastener element according to any one of (2) to (6), which has a shape.
(8) The second inner protrusion of the first half and the second inner protrusion of the second half are offset from each other in the width direction of the fastener element. fastener element.
(9) The inner convex portion includes at least three claws provided at a middle portion in the width direction and at both ends in the width direction, and the at least three claws are located at different positions in the length direction, (2) ) to (6).
(10) Any one of (1) to (9), wherein the mutually opposing surfaces of the first half and the second half include an outer convex portion on the opposite side of the engaging head with respect to the clamping groove. or the fastener element described in one of the above.
(11) The maximum opening distance of the first half and the second half is 85% to 90% of the diameter of the core string of the fastener tape, according to any one of (1) to (10). Fastener element as described.
(12) The engaging head is provided on the first half side in the front-back direction and tapers toward the front side, and the engaging head is provided on the second half side in the front-back direction and has a first head tapered toward the front side. a second head wider than the first head;
The first half has a first leg formed continuously from the first head,
The second half has a neck narrower than the second head, and a second leg extending from the neck to a side opposite to the second head and wider than the neck. , (1), (2), and (7) to (11).
(13) a pair of fastener stringers in which a plurality of resin fastener elements are injection molded on the fastener tape;
a slider that can open and close the pair of fastener stringers;
A slide fastener comprising:
At least one of the pair of fastener stringers is configured such that the fastener element according to any one of (1) to (12) is crimped to a tape side edge of the fastener tape between the resin fastener elements. Installed slide fastener.

According to the fastener element for a slide fastener and the slide fastener of the present invention, it can be attached to the missing part of the fastener element in a short time and at low cost without sending it to a repair factory, and it has a good appearance. I can do it.

FIG. 1 is a plan view of a slide fastener according to the present invention. FIG. 2 is a perspective view of the fastener element according to the first embodiment of the invention. 3 is a plan view of the fastener element shown in FIG. 2. FIG. FIG. 4 is a front view of the fastener element and fastener tape shown in FIG. 2. FIG. 5 is a sectional view taken along the line VV in FIG. 4. FIG. 6 is a sectional view taken along the line VI-VI in FIG. FIG. 7 is a cross-sectional view of the fastener element crimped to the fastener tape at the VI-VI arrow position in FIG. FIG. 8 is a front view of the fastener element after crimping shown in FIG. 7 with the fastener tape removed. FIG. 9 is a perspective view of a fastener element according to a second embodiment of the invention. FIG. 10 is a front view of the fastener element shown in FIG. 9. FIG. 11 is a side view of the fastener element shown in FIG. 9. FIG. 12 is a sectional view taken along the line XII-XII in FIG. FIG. 13 is a sectional view taken along the line XIII-XIII in FIG. 10. FIG. 14 is a cross-sectional view of the fastener element crimped to the fastener tape at the XIII-XIII arrow position in FIG. 10. FIG. 15 is a perspective view of a fastener element according to a third embodiment of the invention. FIG. 16 is a front view of the fastener element shown in FIG. 15. FIG. 17 is a side view of the fastener element shown in FIG. 15. FIG. 18 is a perspective view of a fastener element according to a fourth embodiment of the present invention. FIG. 19 is a front view of the fastener element shown in FIG. 18. FIG. 20 is a side view of the fastener element shown in FIG. 18. FIG. 21 is a perspective view of a fastener element according to a fifth embodiment of the present invention. FIG. 22 is a front view of the fastener element shown in FIG. 21. FIG. 23 is a sectional view taken along the line XXIII-XXIII in FIG. 22. FIG. 24 is a perspective view of a fastener element according to a sixth embodiment of the present invention. FIG. 25 is a front view of the fastener element shown in FIG. 24. 26(a) is a sectional view taken along the line XXVI-XXVI in FIG. 25, and FIG. 26(b) is a sectional view taken along the line XXVI'-XXVI' in FIG. FIG. 27 is a perspective view of a fastener element according to a seventh embodiment of the present invention. FIG. 28 is a plan view of the fastener element shown in FIG. 27. FIG. 29 is a front view of the fastener element shown in FIG. 27. FIG. 30(a) is a sectional view taken along the line XXX-XXX in FIG. 29. FIG. 31 is a front view of the fastener element after crimping shown in FIG. 27 with the fastener tape removed.

Hereinafter, a slide fastener element and a slide fastener according to each embodiment of the present invention will be described.
In the following description, regarding the slide fastener, the direction in which the slider slides to close the left and right fastener stringers is referred to as upward, and the direction in which the slider slides to open left and right fastener stringers is referred to as downward. Also, the direction perpendicular to the vertical direction and parallel to the fastener tape is the left-right direction, the right side in Figure 1 is the right direction, the left side is the left direction, the front side of the page in Figure 1 is the front direction, and the back side of the page is the back direction. do.
Furthermore, regarding the fastener element, the left-right direction of the slide fastener is the longitudinal direction, and the up-down direction is the width direction. Further, regarding the longitudinal direction of the fastener elements, the direction toward the opposing fastener elements is defined as the front side, and the direction away from the opposing fastener elements is defined as the rear side.

(First embodiment)
As shown in FIG. 1, the slide fastener 10 includes a pair of left and

right fastener stringers

11 and 12, and a slider 13 that can open and close the

fastener stringers

11 and 12.

The left and

right fastener stringers

11 and 12 include a pair of left and right fastener tapes 14, an element row 15 provided on the opposing tape side edges 14c of the pair of fastener tapes 14, and a tape side edge 14c at the upper end of the element row 15. It has an upper stopper 16 fixed to and a lower stopper 17 fixed to the tape side edge 14c at the lower end of the element row 15. The upper stopper 16 and the lower stopper 17 prevent the slider 13 from falling off from the element row 15. Note that the lower stopper 17 may be a separable fitting stopper consisting of an insert pin and a box body. Moreover, the above-mentioned structure is an example, and the upper stopper 16 and the lower stopper 17 do not necessarily need to be provided.

The fastener tape 14 includes a tape portion 14a and a core string 14b provided on one side edge of the tape portion 14a, and the core string 14b and a portion of the tape portion 14a on the core string 14b side serve as a tape side edge portion 14c. .

The left and right element rows 15 are formed by a plurality of resin fastener elements 20 injection molded onto the tape side edge 14c of the fastener tape 14. For the resin fastener element 20, a synthetic resin material such as polyacetal, polyethylene terephthalate, or nylon can be used.

In such a slide fastener 10, when excessive force is applied in the direction (left and right direction) that separates the left and

right fastener stringers

11 and 12 from each other while the left and right element rows 15 are engaged, the fastener element 20 may be damaged. However, the fastener element 20 may separate from the fastener tape 14, resulting in a missing portion.

Therefore, the metal fastener element 21 of this embodiment is attached by crimping the resin fastener element 20 to the missing part of the fastener tape 14, as shown by the hatched line in FIG. Used to repair 11 and 12.

As shown in FIGS. 2 to 6, the fastener element 21 to be attached to this missing portion is made of metal such as copper alloy or zinc alloy, for example. The fastener element 21 has a substantially elliptical shape in a plan view, and includes an engaging head 30 in which a groove 31 having a substantially U-shaped cross section extending along the width direction is formed on the front surface, and a substantially V It includes a first half 32 and a second half 33 that branch and extend into a letter shape.

Furthermore, the fastener element 21 further includes a neck portion 34 that extends from the engaging head 30 and is narrower than the engaging head 30. As shown in FIG. 5, the neck portion 34 includes a portion B that is the narrowest in the width direction of the fastener element 21 and has the narrowest width WS. On the other hand, the interlocking head 30 includes the widest point A in the width direction of the fastener element 21 in front of the neck portion 34, and refers to at least a portion in front of the point A.

In the present embodiment, the first half 32 and the second half 33 extend from the widest point A in the width direction of the fastener element 21 in the interlocking head 30 in FIG. It branches in the direction up to the narrowest point B. Specifically, the branching part P where the first half part 32 and the second half part 33 diverge is located between the above-mentioned points A and B in the longitudinal direction of the fastener element 21, along the width direction of the fastener element 21. It is provided. A branching portion P where the first and

second half portions

32 and 33 diverge is located closer to the engaging head than holding

grooves

39a and 39b, which will be described later (see FIG. 4).

The first half 32 is formed with a neck 34 and a first leg 35a that extends from the neck 34 to the side opposite to the engaging head 30, is wider than the neck 34, and is substantially rectangular in plan view. ing. The second half portion 33 is formed with a neck portion 34 and a second leg portion 35b that extends from the neck portion 34 to the side opposite to the engaging head 30, is wider than the neck portion 34, and is substantially rectangular in plan view. ing.

Further, the first half portion 32 is provided with a pair of wing-shaped

shoulders

36, 36 extending in the width direction between the neck portion 34 and the first leg portion 35a. The pair of

shoulders

36, 36 are formed so as to straddle the center line C in the front and back direction (thickness) when the fastener element 21 is crimped and fixed to the fastener tape 14 as described later (see FIG. 8). ). Therefore, the thickness W1 of the neck 34 of the first half 32 having the pair of

shoulders

36, 36 is formed to be thicker than the thickness W2 of the neck 34 of the second half 33 (Fig. (see 4).
In this case, the branching portion P where the first and

second half portions

32 and 33 diverge is located closer to the engaging head than the pair of shoulders 36.

The pair of

shoulders

36, 36 engages with the groove of the

mating fastener element

20 or 21 to prevent displacement in the front and back directions. Note that the pair of

shoulders

36, 36 can be formed symmetrically with respect to the front and back directions on both the first half 32 and the second half 33 (see the fifth embodiment), but as described above, , by forming it only on the first half portion 32, the thickness of the shoulder portion 36 becomes thicker and the molding of the fastener element 21 becomes easier.

In addition, in this embodiment, it is desired that the center portion 29 of the engaging head 30 in the front and back direction is mainly plastically deformed by crimping to be described later, so that the flat appearance of the front surface 43 and the back surface 44 can be maintained even after crimping. . Therefore, as in the present embodiment, the branching portion P extends from the widest point A of the engaging head 30 in the width direction of the fastener element 21 to the narrowest point A of the neck portion 34 in the width direction of the fastener element 21. It is preferable to be located between the point B and more preferably to be located further forward in the longitudinal direction than the pair of shoulders 36.

Approximately

U-shaped clamping grooves

39a and 39b recessed in the front and back directions are provided along the width direction on the mutually opposing surfaces of the

legs

35a and 35b of the first and

second half parts

32 and 33, respectively. . The holding

grooves

39a and 39b of the first and

second half parts

32 and 33 cooperate with each other to accommodate the core string 14b of the fastener tape 14. In addition, on the surfaces of the

legs

35a, 35b that face each other,

flat portions

37, 38 are formed at rear end portions (open end portions) of the clamping

grooves

39a, 39b, respectively. 38 clamps the tape portion 14a when the fastener element 21 is crimped.

Furthermore, the maximum opening distance L between the pair of

legs

35a and 35b opening in a substantially V-shape is set to 85% to 90% of the diameter d of the core string 14b of the fastener tape 14. For example, when the diameter d of the core string 14b is 1.30 to 1.40 mm, the maximum opening distance L is set to, for example, 1.2 mm.

Inside each of the clamping

grooves

39a and 39b of the first half part 32 and the second half part 33, there is an inner convex part that protrudes into the space S formed by the clamping

grooves

39a and 39b and can bite into the core string 14b of the fastener tape 14. 40 are provided. Specifically, the inner convex portion 40 is a substantially cylindrical first inner surface that protrudes from the bottom surface of the holding

grooves

39a, 39b in the front and back directions and extends along both widthwise side surfaces of each

leg portion

35a, 35b in the width direction. The protrusion 41 intersects the first inner protrusion 41 perpendicularly at approximately the center of the length direction (width direction) of the first inner protrusion 41, and extends longitudinally across both longitudinal wall surfaces of the clamping

grooves

39a, 39b. It has a rib-shaped second inner convex portion 42 extending along the direction. The first inner protrusion 41 and the second inner protrusion 42 intersect in a substantially cross shape at substantially the center of the holding

grooves

39a, 39b.

The metal fastener element 21 of this embodiment is attached to the portion where the resin fastener element 20 is missing from the

fastener stringers

11 and 12 using a crimping tool (not shown).

In this case, first, the tape side edge 14c of the fastener tape 14 is inserted between the

flat surfaces

37 and 38 of the pair of V-shaped

opening legs

35a and 35b, and the core string 14b is inserted between the pair of clamping

grooves

39a and 39b. be located in between. At this time, since the maximum opening distance L between the pair of

legs

35a and 35b is set to 85% to 90% of the diameter d of the core string 14b of the fastener tape 14, the core string 14b is slightly compressed. However, after the core string 14b is inserted into the clamping

grooves

39a, 39b and temporarily fastened in the clamping

grooves

39a, 39b before crimping, the fastener tape 14 falls off from between the pair of

legs

35a, 35b. It is possible to prevent this from happening.

Next, a metal fastener element 21 is placed between a pair of resin fastener elements 20 adjacent to the missing part of the fastener element 20 in the width direction (vertical direction) so that the

fastener elements

20, 21, 20 have an equal pitch. ) to the specified position.

Then, by pressing the

legs

35a and 35b of the first half 32 and the second half 33 from the front and back directions using the crimping tool, the center portion 29 of the engaging head 30 in the front and back directions is plastically deformed. As a result, as shown in FIG. 7, the tape part 14a is held between the

flat parts

37 and 38 of the first half part 32 and the second half part 33, and at the same time the pair of inner convex parts 40 in the holding

grooves

39a and 39b are held. The core string 14b of the fastener tape 14 bites into the fastener element 21, and the fastener element 21 is crimped and fixed to the fastener tape 14. The center portion of the fastener tape 14 is pressed and deformed by a pair of inner convex portions 40 . In addition, in the state in which the fastener tape 14 is crimped, the parts of the first half 32 and second half 33 of the fastener element 21 closer to the engaging head 30 than the holding

grooves

39a, 39b, up to the branching part P. A gap S1 is provided between them. The core string 14b is not provided in the gap S1. By providing this gap S1, it is possible to suppress damage and unintended deformation due to force being applied to the portion closer to the engagement head 30 than the clamping

grooves

39a, 39b during the crimping process. It is also advantageous when releasing the fastener element 21 from the mold.

The first half 32 and the second half 33 sandwich the fastener tape 14 by plastically deforming the center portion 29 of the interlocking head 30 in the front and back directions. Compared to the case of plastic deformation, it deforms in a natural manner and maintains good appearance. That is, after crimping, the surface 43 from the engaging head 30 to the first half 32 and the back surface 44 from the engaging head 30 to the second half 33 are both flat and parallel to each other.

The first inner convex part 41 of the inner convex part 40 extends in the width direction within the clamping

grooves

39a and 39b and clamps the core string 14b along its length, so that the first inner convex part 41 mainly acts on the left and right side of the fastener element 21. Stability can be improved by suppressing wobbling of the fastener element 21 in response to a force in the direction, and furthermore, the fastener element 21 is prevented from falling off from the fastener tape 14. Moreover, since the rib-shaped second inner convex portion 42 clamps the core cord 14b from a direction intersecting the length direction, the fastener element 21 is mainly displaced in the width direction (vertical direction) with respect to the fastener tape 14. prevent this from happening. That is, the fastener element 21 is firmly fixed to the fastener tape 14 by the anchor effect of the cross-shaped first inner convex portion 41 and second inner convex portion 42 that press and deform the core string 14b.

As explained above, according to the fastener element 21 of the present embodiment, by attaching a new metal fastener element 21 to the missing part of the resin fastener element 20 from the fastener tape 14 by crimping, the slide fastener 10 can be easily repaired. In addition, there is no need to send clothing that requires repair to a factory, the time and cost for repairing a damaged fastener element can be significantly reduced, and repairs can be easily made on site.

Furthermore, since the metal fastener element 21 has approximately the same good appearance as the resin fastener element 20, the slide fastener 10 having the metal fastener element 21 and the resin fastener element 20 has a good appearance as a whole. You can maintain your beauty.

(Second embodiment)
Next, a fastener element according to a second embodiment of the present invention will be described in detail with reference to FIGS. 9 to 14.
In the fastener element 21A according to the present embodiment, the second inner convex portion 42 of the first half portion 32 is formed offset to one side in the width direction from the widthwise center WC (see FIGS. 12 and 13) of the fastener element 21A. has been done. On the other hand, the second inner convex portion 42 of the second half portion 33 is formed offset from the widthwise center WC of the fastener element 21A toward the other side in the widthwise direction. That is, the second inner protrusion 42 of the first half 32 and the second inner protrusion 42 of the second half 33 are offset from each other in the width direction of the fastener element 21A.

As a result, when the fastener element 21A is crimped onto the fastener tape 14, as shown in FIG. , respectively, to deform the core string 14b in the shearing direction. Therefore, the fastener element 21A can improve the effect of preventing the fastener element 21A from shifting in the width direction with respect to the fastener tape 14.
Other configurations and effects are similar to the fastener element 21 according to the first embodiment.

(Third embodiment)
Next, a fastener element according to a third embodiment of the present invention will be described in detail with reference to FIGS. 15 to 17.
In addition to the structure of the fastener element 21 according to the first embodiment, the fastener element 21B according to the present embodiment is further provided with an outer convex portion 50. The outer convex portion 50 includes a first outer convex portion 51 extending in the width direction along the end of the plane portion 37 of the first half 32 on the engaging head 30 side (front side), and a second half portion 33 . The flat portion 38 includes a second outer convex portion 52 extending in the width direction along the end opposite to the engaging head 30 (rear side). The first outer convex portion 51 and the second outer convex portion 52 are formed at positions separated in the longitudinal direction when viewed from the front and back directions.

When the fastener element 21B is crimped and fixed to the fastener tape 14, in addition to the fixing force provided by the

inner protrusions

40 and 40 in the clamping

grooves

39a and 39b, the first outer protrusion 51 and the second outer protrusion 52 Since the tape portion 14a is deformed into a substantially crank shape in the left-right direction and held, the fixing force is further strengthened and it becomes difficult to separate from the fastener tape 14. Further, since the tape portion 14a is held between the first outer convex portion 51 and the second outer convex portion 52 over the entire length in the width direction of each

leg portion

35a, 35b, the effect of the fastener element 21 of the first embodiment is improved. In addition, wobbling of the fastener element 21B with respect to the fastener tape 14 (rotation within the plane of the fastener tape 14) can be further suppressed.

(Fourth embodiment)
Next, a fastener element according to a fourth embodiment of the present invention will be described in detail with reference to FIGS. 18 to 20.
The fastener element 21C according to this embodiment includes an outer convex portion 55 having a different shape from the outer convex portion 50 of the fastener element 21B of the third embodiment.

The outer convex portion 55 includes a first outer convex portion 56 provided on the plane portion 37 of the first half portion 32 and a second outer convex portion 57 provided on the plane portion 38 of the second half portion 33. The first outer convex portion 56 is provided so that a part of one side in the width direction of the plane portion 37 of the first half portion 32 protrudes toward the plane portion 38, and the second outer convex portion 57 is provided on the second half portion 32. A part of the other side in the width direction of the flat portion 38 of 33 is provided to protrude toward the flat portion 37 . The first outer convex portion 56 and the second outer convex portion 57 are formed at positions separated in the width direction when viewed from the front and back directions.

When the fastener element 21C is crimped and fixed to the fastener tape 14, the first outer convex portion 56 and the second outer convex portion 57 deform the tape portion 14a into a substantially crank shape in the vertical direction and firmly hold the tape portion 14a. do. Further, since the tape portion 14a is held between the

legs

35a and 35b over the entire length in the width direction, it is possible to suppress wobbling of the fastener element 21C with respect to the fastener tape 14, similarly to the fastener element 21B of the third embodiment. .

(Fifth embodiment)
Next, a fastener element according to a fifth embodiment of the present invention will be described in detail with reference to FIGS. 21 to 23.
The fastener element 21D of this embodiment has a pair of inner protrusions including three

claw parts

61a, 61b, 62a, 62b, 63a, 63b instead of the pair of inner protrusions 40 in the fastener element 21 according to the first embodiment.

parts

60, 60 are provided.

The inner protrusion 60 of the first half 32 includes a first claw 61a, a second claw 62a, and a third claw 63a provided in the holding groove 39a. 60 includes a first claw part 61b, a second claw part 62b, and a third claw part 63b provided in the holding groove 39b.

The first claw portion 61a and the first claw portion 61b are provided separately from each other in the longitudinal direction at one end in the width direction of the holding

grooves

39a and 39b (on the front side of the paper in FIG. 22), and the first claw portion 61a is provided in the holding groove 39a. The first claw portion 61b is formed near the opening side end of the holding groove 39b. The second claw portion 62a and the second claw portion 62b are provided facing each other in the front and back directions at the widthwise intermediate portion and the longitudinally intermediate portion of the holding

grooves

39a and 39b. Furthermore, the third claw part 63a and the third claw part 63b are provided separately in the longitudinal direction at the other end in the width direction of the holding

grooves

39a and 39b (on the back side of the paper in FIG. 22), and the third claw part 63a is The third claw portion 63b is formed near the opening end of the holding groove 39a, and the third claw portion 63b is formed near the engaging head 30 of the holding groove 39b. The

first claw portions

61a, 61b and the

third claw portions

63a, 63b are integrally formed from the bottom surface to the longitudinal side surface of the holding

grooves

39a, 39b.

As a result, when the fastener element 21D of this embodiment is crimped and fixed to the fastener tape 14, there are The fastener tape 14 is firmly held by sandwiching the core string 14b in a well-balanced manner at three different positions in the width direction and in different sandwiching directions.

Furthermore, in the fastener element 21D of this embodiment, the shoulder portion 36 described in the first embodiment (see FIG. 3) is formed by being divided into two parts, a first shoulder portion 36a and a second shoulder portion 36b. . Specifically, the pair of first shoulders 36a extend in a wing shape in the width direction between the neck 34 and the first leg 35a of the first half 32, and the pair of second shoulders 36b extend in the width direction in a wing shape between the neck portion 34 of the second half portion 33 and the second leg portion 35b.

Then, when the fastener element 21D is crimped and fixed to the fastener tape 14, the first shoulder portion 36a and the second shoulder portion 36b are overlapped to form a shoulder portion 36 that fits into the groove portion 31.
Other configurations and effects are similar to the fastener element 21 of the first embodiment.

(Sixth embodiment)
Next, a fastener element according to a sixth embodiment of the present invention will be described in detail with reference to FIGS. 24 to 26.
The fastener element 21E of this embodiment includes an engaging head 30, and a first half 32 and a second half 33 that are branched in a substantially V-shape from approximately the center of the engaging head 30 in the front and back directions. The engaging head 30 includes a first head 30a formed on the first half 32 side and a second head 30b formed on the second half 33 side. The first head 30a has a substantially triangular shape that tapers toward the front, and the second head 30b is wider than the first head 30a and has a substantially elliptical shape in plan view.

Further, in the first half portion 32, a first leg portion 35a, which is substantially rectangular in plan view, is formed continuously from the first head portion 30a. A neck portion 34, which is narrower than the second head portion 30b, is formed in the second half portion 33 continuously from the second head portion 30b. Further, a second leg portion 35b is formed from the neck portion 34, extending on the side opposite to the second head portion 30b, and having a width wider than the neck portion 34 and having a substantially rectangular shape in plan view. That is, the second head portion 30b and the second half portion 33 (neck portion 34, second leg portion 35b) have the same shape as the half portion, neck portion 34, and second leg portion 35b of the engaging head portion 30 of the first embodiment. has. The first leg 35a of the first half 32 faces the neck 34 and second leg 35b of the second half 33.

Further, the fastener element 21E of this embodiment does not have the groove portion 31 and the shoulder portion 36 described in the first embodiment, and when the left and right element rows 15 are engaged, the second head 30b of the fastener element 21E The front surface 65 of the first head 30a and the back surface 66 of the first leg 35a of the first head 30a come into contact with the back surface of the leg of the first head and the surface of the second head of another fastener element 20, respectively. Prevents misalignment in the front and back directions.

Similar to the first embodiment, substantially

U-shaped clamping grooves

39a and 39b extend in the width direction on the opposing surfaces of the

legs

35a and 35b of the first half 32 and the second half 33, respectively. It is provided. On the mutually opposing surfaces of each of the

leg portions

35a, 35b,

flat portions

37, 38 are formed at rear end portions (open end portions) of the holding

grooves

39a, 39b, respectively. In addition, in each of the holding

grooves

39a and 39b of the first half 32 and the second half 33, a first inner protrusion 41 and a second inner protrusion 42 that can bite into the core string 14b of the fastener tape 14 are provided. An inner convex portion 40 is provided.

Even in such a fastener element 21E in which the shapes of the engaging heads 30 are different in the front and back directions, the first half 32 and the second half 33 are provided with inner convex portions 40 on the

surfaces

37 and 38 facing each other. Since the clamping

grooves

39a and 39b are provided, the inner convex portion 40 presses and deforms the core string 14b when crimped, and the fastener element 21 is firmly fixed to the fastener tape 14.

Other configurations and effects are similar to the fastener element 21 of the first embodiment.
For example, in the above description, the inner protrusion 40 (the first inner protrusion 41 and the second inner protrusion 42) is provided in the holding

grooves

39a and 39b, but the invention is not limited to the inner protrusion 40. , the

outer protrusions

50, 55, and the inner protrusion 60 described in the second to fifth embodiments, or a combination of these may be provided.

(Seventh embodiment)
Next, a fastener element according to a seventh embodiment of the present invention will be described in detail with reference to FIGS. 27 to 31.
In the fastener element 21F of this embodiment, the wing-shaped protrusion 26 is connected to the engaging head 30 between the first half 32 and the second half 33, in addition to the first half 32 and the second half 33. It is placed protruding from the

That is, the protruding portion 26 includes a base portion 28 extending rearward from the rear surface of the center portion 29 in the front and back direction of the engaging head 30, and a pair of shoulder portions 36 extending from the tip of the base portion 28 to both sides in the width direction of the slide fastener. The base 28 and the pair of shoulders 36 form a substantially T-shape.

As shown in FIG. 31, the fastener element 21F having such a protrusion 26 is designed so that the stress generated when crimping is applied to each neck of the groove 31 of the engaging head 30, the first half 32, and the second half 33. 34, it is possible to suppress the occurrence of caulking cracks.

Further, as shown in FIG. 29, each neck portion 34 of the first half portion 32 and the second half portion 33 is formed with a hollowed out portion 34a by hollowing out the inner surfaces facing each other to reduce the thickness of each neck portion 34. ing.
As a result, in the neck portions 34 of the first half portion 32 and the second half portion 33, the stress generated when the fastener element 21F is tightened is increased due to the hollow portion 34a, so that the stress generated in the groove portion 31 of the engaging head 30 increases. Stress concentration can be dispersed more reliably.

Further, in the present embodiment, the step portion 27 forming the front surface of the holding

grooves

39a, 39b is formed to be approximately equal in height to the hollow portion 34a, but is not limited thereto, They may be made to protrude inward from the hollowed out portion 34a at approximately the same height.
Incidentally, regardless of the height of the stepped portion 27, there is no substantial effect on the function when crimping and fixing the fastener element 21F to the fastener tape 14 (see FIG. 7). However, when manufacturing the fastener elements 21F during the surface treatment process, etc., the height of the stepped portion 27 is cut out to prevent the two fastener elements 21F from naturally interlocking with each other and becoming difficult to separate. Preferably, the height is approximately equal to the height at the portion 34a.
Other configurations and effects are similar to the fastener element 21 of the first embodiment.

It should be noted that the present invention is not limited to the embodiments exemplified above, and can be modified as appropriate without departing from the gist of the present invention.
For example, in the embodiment described above, the missing portion of the resin fastener element 20 is repaired by attaching metal fastener elements 21 to 21E. However, the present invention is not limited to this, and for example, the

resin fastener stringers

11 and 12 are manufactured with the resin fastener element 20 missing in advance, and a metal fastener element is inserted into the missing portion. By attaching the slide fasteners 21 to 21E, it is also possible to configure a slide fastener in consideration of design, in which the resin fastener element 20 and the metal fastener elements 21 to 21E are mixed.
Further, the fastener elements 21 to 21E may be kept in the metal color of the material, but they can also be changed to other colors by surface treatment such as plating.
Furthermore, in the above embodiment, the

inner protrusions

40, 60 in the clamping

grooves

39a, 39b include a cross-shaped first inner protrusion 41 and a second inner protrusion 42, or the

claws

61a, 61b, 62a. , 62b, 63a, 63b has been described. However, the inner convex portion of the present invention is not limited to this, and may have other shapes as long as it can protrude into the space S formed by the holding

grooves

39a and 39b and bite into the core string 14b of the fastener tape 14. It's okay.

As mentioned above, the following matters are disclosed in this specification.
(1) A fastener element for a metal slide fastener,
comprising an interlocking head, and a first half and a second half that branch and extend,
The first half portion and the second half portion each have a clamping groove along the width direction capable of accommodating the core string of the fastener tape on mutually opposing surfaces,
A fastener element for a slide fastener, wherein the first half part and the second half part are branched closer to the engaging head than the holding groove.
According to this configuration, the missing fastener element can be attached to the missing fastener element in a short time and at low cost without having to be sent to a repair shop, and the first half and the second half are more likely to engage than the clamping groove. Since it is branched on the head side, it can have a good appearance even when crimped.

(2) The fastener element according to (1), wherein each of the clamping grooves is provided with an inner convex portion that projects into the space formed by the clamping grooves.
According to this configuration, the fastener element can be firmly fixed to the fastener tape.

(3) further comprising a neck extending from the interlocking head and having a narrower width than the interlocking head;
At least one of the first half and the second half,
(1) or (2) branching from the widest part in the width direction of the fastener element in the interlocking head to the narrowest part in the width direction of the fastener element in the neck part; ) Fastener elements described in ).
According to this configuration, the first half and the second half diverge from the widest part of the interlocking head to the narrowest part of the neck, so that when crimped, the natural It can be easily deformed and has a good appearance.

(4) The fastener element according to (3), further comprising a protrusion that protrudes from the engagement head and is provided between the first half and the second half.
According to this configuration, since the protrusion is separated into the first half and the second half, stress when crimped is applied to the engaging head and the necks of the first and second halves. It is dispersed and can suppress caulking cracks.

(5) The first half has a neck and a first leg that extends from the neck to the side opposite to the interlocking head and is wider than the neck, and/or the second The half part has a neck part and a second leg part extending from the neck part to a side opposite to the interlocking head part and being wider than the neck part,
A groove extending along the width direction is formed on the front surface of the engaging head,
At least one of the first half and the second half has a pair of grooves that extend in the width direction between the neck and the first or second leg and engage with the groove. The fastener element according to any one of (1) to (3), comprising a shoulder portion.
According to this configuration, a metal fastener element having an interlocking head, a neck, and a leg in the front and back directions can be applied to a slide fastener including a resin fastener element having a similar shape.

(6) The fastener element according to (5), wherein the shoulder portion is provided on either one of the first half portion and the second half portion.
According to this configuration, the thickness of the shoulder portion can be increased, and the molding of the fastener element becomes easy.

(7) The inner protrusion is a cross comprising a first inner protrusion extending along the width direction and a second inner protrusion intersecting the first inner protrusion and extending along the longitudinal direction. The fastener element according to any one of (2) to (6), which has a shape.
According to this configuration, the fastener element can be firmly fixed to the fastener tape, and displacement of the fastener element at least in the width direction can be suppressed.

(8) The second inner protrusion of the first half and the second inner protrusion of the second half are offset from each other in the width direction of the fastener element. fastener element.
According to this configuration, the effect of preventing the fastener element from shifting in the width direction with respect to the fastener tape can be improved.

(9) The inner convex portion includes at least three claws provided at a middle portion in the width direction and at both ends in the width direction, and the at least three claws are located at different positions in the length direction, (2) ) to (6).
According to this configuration, the fastener element can be firmly fixed to the fastener tape, and displacement of the fastener element in the longitudinal direction and the width direction can be prevented.

(10) Any one of (1) to (9), wherein the mutually opposing surfaces of the first half and the second half include an outer convex portion on the opposite side of the engaging head with respect to the clamping groove. or the fastener element described in one of the above.
According to this configuration, the fastener element can be more firmly fixed to the fastener tape, and wobbling of the fastener element can be suppressed.

(11) The maximum opening distance of the first half and the second half is 85% to 90% of the diameter of the core string of the fastener tape, according to any one of (1) to (10). Fastener element as described.
According to this configuration, it is possible to prevent the fastener tape from falling off from between the pair of legs after the core string is temporarily fixed in the holding groove before crimping.

(12) The engaging head is provided on the first half side in the front-back direction and tapers toward the front side, and the engaging head is provided on the second half side in the front-back direction and has a first head tapered toward the front side. a second head wider than the first head;
The first half has a first leg formed continuously from the first head,
The second half has a neck narrower than the second head, and a second leg extending from the neck to a side opposite to the second head and wider than the neck. , (1), (2), and (7) to (11).
According to this configuration, a metal fastener element having an engaging head and legs on one side in the front and back direction and an engaging head, neck and legs on the other side in the front and back direction is replaced with a resin fastener element having a similar shape. It can be applied to slide fasteners with fastener elements made of

(13) a pair of fastener stringers in which a plurality of resin fastener elements are injection molded on the fastener tape;
a slider that can open and close the pair of fastener stringers;
A slide fastener comprising:
At least one of the pair of fastener stringers is configured such that the fastener element according to any one of (1) to (12) is crimped to a tape side edge of the fastener tape between the resin fastener elements. Installed slide fastener.
According to this configuration, the fastener element can be attached to the missing fastener element in a short time and at low cost without sending it to a repair shop, and has a good appearance even when crimped. You can get a slide fastener made of

Note that this application is based on an international patent application (PCT/JP2022/012478) filed on March 17, 2022, the contents of which are incorporated as a reference in this application.

10

Slide fasteners

11, 12 Fastener stringer 13 Slider 14 Fastener tape

14a Tape portion

14b Core string 14c Tape side edge 20

Resin fastener elements

21, 21A, 21B, 21C, 21E Metal fastener element 30 Engaging head 30a No. 1 head 30b 2nd head 31 Groove 32 1st half 33 2nd half 34 Neck 35a 1st leg 35b

2nd leg

36,

36a Shoulder

37, 38

Plane section

39a,

39b Clamping groove

40, 60 Inner convex part 41 First inner convex part 42 Second inner

convex part

50, 55 Outer

convex part

61a, 62a, 63a, 61b, 62b, 63b Claw part d Diameter L of core string First half part and second half part Maximum opening distance S Space

Claims

A metal slide fastener element (21, 21A, 21B, 21C, 21D, 21E),
An interlocking head (30), a first half (32) and a second half (33) that branch and extend,
The first half portion and the second half portion each include a clamping groove (39a, 39b) along the width direction of the fastener element on surfaces facing each other,
The first half and the second half are slide fastener fastener elements (21, 21A, 21B, 21C) that are branched closer to the engagement head (30) than the holding grooves (39a, 39b). , 21D, 21E, 21F).
The fastener element according to claim 1, wherein each of the clamping grooves (39a, 39b) is provided with an inner convex portion (40, 60) that projects into the space (S) formed by the clamping groove. 21, 21A, 21B, 21C, 21D, 21E, 21F).
further comprising a neck (34) that extends from the engaging head (30) and is narrower than the engaging head (30);
At least one of the first half (32) and the second half (33),
branching from the widest point in the width direction of the fastener element in the interlocking head (30) to the narrowest point in the width direction of the fastener element in the neck part (34); The fastener element (21, 21A, 21B, 21C, 21D, 21E, 21F) according to claim 1 or 2.
Fastener element according to claim 3, comprising a projection (26) projecting from the interlocking head (30) and provided between the first half (32) and the second half (33). (21F).
The first half has a neck (34) and a first leg (35a) extending from the neck to a side opposite to the interlocking head and being wider than the neck, and/or The second half has a neck (34) and a second leg (35b) that extends from the neck to the side opposite to the interlocking head and is wider than the neck,
A groove (31) extending along the width direction is formed on the front surface of the engaging head,
At least one of the first half and the second half has a pair of grooves that extend in the width direction between the neck and the first or second leg and engage with the groove. Fastener element (21, 21A, 21B, 21C, 21D) according to any one of claims 1 to 3, comprising a shoulder (36).
The fastener element (21, 21A, 21B, 21C, 21D) according to claim 5, wherein the shoulder portion is provided on either the first half portion or the second half portion.
The inner protrusion (40) includes a first inner protrusion (41) that extends in the width direction, and a second inner protrusion (42) that intersects with the first inner protrusion and extends in the longitudinal direction. The fastener element (21, 21A, 21B, 21C, 21E, 21F) according to any one of claims 2 to 6, which has a cross shape.
7. The second inner protrusion (42) of the first half and the second inner protrusion (42) of the second half are offset from each other in the width direction of the fastener element. The fastener element (21A) described in .
The inner convex portion (60) includes at least three claw portions (61a, 62a, 63a, 61b, 62b, 63b) provided at the middle portion in the width direction and at both end portions in the width direction, and the at least three claw portions The fastener element (21D) according to any one of claims 2 to 6, wherein the fastener elements (21D) have different positions in the longitudinal direction.
Any one of claims 1 to 9, wherein the mutually opposing surfaces of the first half and the second half include an outer convex portion (50,55) on the opposite side of the engagement head with respect to the clamping groove. The fastener element (21B, 21C) according to item 1.
Any one of claims 1 to 10, wherein the maximum opening distance (L) of the first half and the second half is 85% to 90% of the diameter (d) of the core string of the fastener tape. (21, 21A, 21B, 21C, 21D, 21E, 21F).
The engaging head includes a first head (30a) that is provided on the first half side in the front and back direction and tapers toward the front, and a first head (30a) that is provided on the second half side in the front and back direction and that is tapered toward the front. a second head (30b) wider than the first head;
The first half has a first leg (35a) formed continuously from the first head,
The second half includes a neck portion (34) narrower than the second head portion, and a second leg portion (34) extending from the neck portion to a side opposite to the second head portion and wider than the neck portion. 35b). Fastener element (21E) according to any one of claims 1, 2, 7 to 11.
a pair of fastener stringers (11, 12) in which a plurality of resin fastener elements (20) are injection molded on the fastener tape;
a slider (13) capable of opening and closing the pair of fastener stringers;
A slide fastener comprising:
At least one of the pair of fastener stringers has a fastener element (21, 21A, 21B, 21C, 21D, 21E, 21F) according to any one of claims 1 to 12 between the resin fastener elements. , a slide fastener (10) which is crimped and attached to the tape side edge of the fastener tape.