WO2024034143A1

WO2024034143A1 - Slide fastener, and opening assembly for slide fastener

Info

Publication number: WO2024034143A1
Application number: PCT/JP2022/030830
Authority: WO
Inventors: 祐介細川
Original assignee: Ykk株式会社
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2024-02-15
Also published as: TW202406473A

Abstract

In a slide fastener (10), at a slider pull-up start position in which an insert pin (70) is inserted into an insert pin insertion hole (63) of a box body (62) and a slider (40) is in contact with the front surface of the box body (62), an engaging head portion (32) of the rearmost element (31a) of one fastener element row (30A) approaches or comes into contact with an engaging portion (74) provided on the insert pin (70). This improves operability in pulling up the slider.

Description

Slide fasteners and opening tools for slide fasteners

The present invention relates to a slide fastener equipped with an opening tool and an opening tool for a slide fastener.

For example, in a slide fastener used for front-opening clothing such as jumpers and overcoats, an opening tool is provided at one end of the left and right fastener stringers. The opening tool generally has a box body and a box bar attached to one end of one fastener stringer, and an insert pin attached to one end of the other fastener stringer.

A conventional slide fastener equipped with an opening tool has a slope section formed on the top surface of the box body with a downward slope from the side wall of the box rod insertion hole to the side wall of the insert pin insertion hole, so that the box body and the slider are connected. When abutting, the slider is formed so that it can be tilted toward the insert pin insertion hole side of the box body, so that the insert pin can be smoothly and easily inserted into the insert pin insertion hole from diagonally above through the slider. is known (for example, see Patent Document 1).

Japanese Patent No. 3621006

By the way, depending on the structure of the slide fastener, such as a water-stopping slide fastener with a water-stopping film attached to a woven fastener, force is required to pull up the slider when closing the slide fastener, and if you try to pull up the slider, the box may fall. The slider tends to get twisted on the rod side.

Specifically, as shown in FIG. 13A, the slider 40 is brought into contact with the front surface of the box body 62, and the insert pin 70 is inserted into the insert pin insertion hole of the box body 62 through the element guide path 48 of the slider 40. If an attempt is made to pull up the slider 40 from this state, the slider 40 will be twisted toward the rod box 61, as shown in FIG. 13B.

In particular, a knitted fastener is obtained by knitting a fastener tape and simultaneously knitting a coiled fastener element into the tape side edge of the fastener tape, so that the fastener stringer is likely to be formed flexibly. Therefore, as the slider 40 twists, the fastener element row 30A on the side having the box bar 61 and the box body 62 is pushed by the guide column 45, and the engaging head of the rearmost element 31a closest to the box bar 61 32 moves forward (away from the box pin 61), colliding with the engagement head of the rearmost element 31b closest to the insert pin 70 in the fastener element row 30B having the insert pin 70, and preventing proper engagement. There was a possibility that they would not match.
For this reason, the

rearmost elements

31a and 31b closest to the box pin 61 and the insert pin 70 collide with each other and do not engage properly, resulting in cases in which the slider 40 cannot be pulled up smoothly.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a slide fastener and an opening tool for the slide fastener that can improve operability when pulling up a slider.

The above object of the present invention is achieved by the following configuration.
(1) a pair of fastener stringers having a pair of fastener tapes and a pair of fastener element rows respectively provided on opposing tape side edges of the pair of fastener tapes;
an opening tool having a box bar and a box body arranged on the rear end side of one of the pair of fastener element rows, and an insert pin arranged on the other rear end side of the pair of fastener element rows;
an upper wing plate and a lower wing plate that are spaced apart in the vertical direction and arranged in parallel; a guide column that connects the upper wing plate and the lower wing plate at a front end; and at least one of the upper wing plate and the lower wing plate. a flange portion provided on one rear side edge, and a slider that engages and separates the pair of fastener element rows;
A slide fastener comprising:
The box rod is provided on the box body so as to protrude forward from the box body on one side in the width direction where the pair of fastener element rows are arranged, and the insert pin is inserted in the other side in the width direction. A possible insert pin insertion hole is formed,
The insert pin includes a meshing portion that can engage with a meshing head of the rearmost element of the one fastener element row,
At the pull-up start position of the slider where the insert pin is inserted into the insert pin insertion hole of the box body and the slider contacts the front surface of the box body, the engagement head of the rearmost element of the one fastener element row is a slide fastener that is close to or in contact with the engaging portion provided on the insert pin.
(2) The front surface of the box body has an inclined surface that slopes backward from the box rod side toward the insert pin insertion hole side,
The slide fastener according to (1), wherein at the pulling start position of the slider, the slider is inclined with respect to the width direction in which the pair of fastener element rows are lined up.
(3) The slide fastener according to (2), wherein the inclined surface is inclined within a range of 5 to 12 degrees with respect to the width direction in which the pair of fastener element rows are arranged.
(4) The box body includes a box body part in which the insert pin insertion hole is provided, and an extension part that is continuous from the box body part and constitutes a front surface of the box body,
The width of the extending portion is smaller than the width of the box main body portion,
The slide fastener according to (2) or (3), wherein the end of the inclined surface on the side of the insert pin insertion hole is connected to the front surface of the box main body.
(5) The box body includes a box body part in which the insert pin insertion hole is provided, and an extension part that is continuous from the box body part and constitutes a front surface of the box body,
The slide fastener according to any one of (1) to (3), wherein the width of the extending portion is smaller than the width of the box body portion.
(6) The slider includes parallel parts parallel to each other extending from the rear opening on the inner surface of the flange part,
The box pin has an upright surface along the front-rear direction of the slide fastener on a side opposite to the side facing the insert pin,
The slide fastener according to any one of (1) to (5), wherein the entire upright surface of the box bar faces the parallel portion of the flange portion at the pulling start position of the slider.
(7) For slide fasteners having a box bar and a box body that can be placed on the rear end side of one of a pair of fastener element rows, and an insert pin that can be placed on the other rear end side of a pair of fastener element rows. An opening tool,
The box rod is provided on one side in the width direction of the box body and protrudes forward from the box body, and the insert pin is inserted in the other side in the width direction of the box body. A possible insert pin insertion hole is formed,
The length of the portion of the box bar protruding from the box body is 35 to 45% of the length from the bottom of the insert pin insertion hole of the box body to the tip of the box bar in the longitudinal direction of the box bar. An opening tool for slide fasteners.
(8) The slide fastener opening tool according to (7), wherein the front surface of the box body has an inclined surface that slopes backward from the box rod side toward the insert pin insertion hole side.
(9) The slide fastener opening tool according to (8), wherein the inclined surface is inclined within a range of 5 to 12 degrees with respect to the width direction of the box body.
(10) The box body includes a box body part in which the insert pin insertion hole is provided, and an extension part that is continuous from the box body part and constitutes a front surface of the box body,
The width of the extending portion is smaller than the width of the box main body portion,
The slide fastener opening tool according to (8) or (9), wherein the end of the inclined surface on the side of the insert pin insertion hole is connected to the front surface of the box main body.
(11) The box body includes a box body part in which the insert pin insertion hole is provided, and an extension part that is continuous from the box body part and constitutes a front surface of the box body,
The opening tool for a slide fastener according to any one of (7) to (9), wherein the width of the extending portion is smaller than the width of the box main body portion.

According to the present invention, even if the slider is twisted when pulling up the slider, the rearmost elements of a pair of fastener element rows can be prevented from colliding with each other and not engaging correctly, and the operability when pulling up the slider can be improved. can be improved.

It is a top view explaining the slide fastener concerning one embodiment of the present invention. It is a side view of a slider. FIG. 3 is a top view of the butterfly pin. It is a perspective view which shows the box body and box bar of an opening tool. It is a top view which shows a box body and a box bar. FIG. 3 is a cross-sectional view of the box at the vertically intermediate portion of the box, showing the box and the box rod. FIG. 7 is a diagram showing the positional relationship among the slider, the opening tool, and the element when the slider is at the pulling start position, with the upper wing plate of the slider cut away. When the slider is twisted toward the box bar until the rear opening of the slider is parallel to the front surface of the box body, the positional relationship between the slider, opening tool, and element can be determined by cutting the upper wing plate of the slider. FIG. FIG. 7 is a diagram showing the positional relationship among the slider, the opening tool, and the element when the slider is twisted most toward the box rod side, with the upper wing plate of the slider cut away. FIG. 6 is a diagram for explaining a state in which the engaging head of the rearmost element of one fastener element row is close to the engaging part provided on the insert pin. It is a top view which shows a box body and a box bar in a 1st modification. It is a top view which shows a box body and a box bar in a 2nd modification. It is a top view which shows a box body and a box bar in a 3rd modification. FIG. 7 is a diagram showing the positional relationship among the slider, the opening tool, and the element when the slider is at the pulling start position in a third modified example, with the upper wing plate of the slider cut away. In a third modification, the upper wing plate of the slider is cut to show the positional relationship among the slider, the opening tool, and the element in a state where the slider is twisted most toward the box rod side. It is a top view which shows a box body and a box bar in a 4th modification. In a conventional slide fastener, the upper wing plate of the slider is cut to show the positional relationship among the slider, the opening tool, and the element when the slider is at the pulling start position. In a conventional slide fastener, the upper wing plate of the slider is cut to show the positional relationship among the slider, the opening tool, and the element when the slider is twisted most toward the box bar side.

Hereinafter, one embodiment of the slide fastener according to the present invention will be described in detail based on the drawings. In the following explanation, the upper side means the front side with respect to the paper surface of FIG. 1, the lower side means the back side with respect to the paper surface of FIG. 1, the front side means the upper side with respect to the paper surface of FIG. The lower side with respect to the paper surface of FIG. 1, the left side is the left side with respect to the paper surface of FIG. 1, and the right side is the right side with respect to the paper surface of FIG. Therefore, the left-right direction of the slide fastener is the width direction of a pair of fastener element rows, which will be described later, and also the width direction of the box, which will be described later. Further, the front-rear direction of the slide fastener is also the longitudinal direction of the box bar, the direction in which the element rows close as the slider moves is the front side, and the direction in which the element rows open is the rear side.

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

right fastener tapes

20A, 20B, and a pair of fastener elements provided on opposing tape side edges 21 of the pair of

fastener tapes

20A, 20B. A pair of

fastener stringers

22A and

22B having rows

30A and 30B, a slider 40 that engages and separates a pair of

fastener element rows

30A and 30B, and an upper end portion provided at the front end side of each of the pair of fastener element rows 30A and 30B. 11, and an opening tool 60 provided on the rear end side of the pair of fastener element rows 30.

This slide fastener 10 is a reverse-use slide fastener in which a pair of

fastener element rows

30A, 30B are arranged on the lower surface side of a pair of

fastener tapes

20A, 20B. Moreover, this slide fastener 10 is a water-stopping slide fastener, and a water-stopping film is pasted on the upper surface of the

fastener tapes

20A and 20B.

The

fastener element rows

30A and 30B are coil-shaped fastener element rows formed by winding a synthetic resin monofilament in a certain direction, and constitute a plurality of fastener elements 31. Examples of the monofilament synthetic resin material include polyester and nylon.

The

fastener element rows

30A and 30B are sewn to the lower surface (back surface) of the tape side edge 21 of the

fastener tapes

20A and 20B with a sewing thread (not shown). Moreover, this slide fastener 10 is a braided fastener as explained in the prior art, and the braided fastener is a coil-shaped fastener attached to the tape side edge 21 of the

fastener tapes

20A, 20B at the same time as the

fastener tapes

20A, 20B are knitted. Obtained by weaving element rows.

The slider 40 includes a slider body 41 and a handle 42 attached to the upper surface of the slider body 41. By moving the slider 40 toward the top stop 11 side, the left and right

fastener element rows

30A and 30B engage with each other, and by moving the slider 40 toward the opening tool 60 side, the left and right

fastener element rows

30A and 30B engage with each other. To separate. Although the slider 40 is a slider with an automatic stop function in this embodiment, it may be a slider without an automatic stop function.

As shown in FIG. 2, the fuselage 41 includes an upper wing plate 43 and a lower wing plate 44 that are spaced apart in the vertical direction and arranged in parallel, and a guide column that connects the upper wing plate 43 and the lower wing plate 44 at the front end. 45, a flange 46a that protrudes downward along both left and right edges of the upper wing plate 43, and a flange 46b that protrudes upward along both left and right edges of the lower wing plate 44. , a raised portion 47 formed on the lower surface of the upper wing plate 43 and guiding the left and right

fastener element rows

30A, 30B. A substantially Y-shaped element guide path 48 is formed between the upper wing plate 43 and the lower wing plate 44, through which the left and right

fastener element rows

30A, 30B are inserted. Moreover, a tape groove 49 into which the

fastener tapes

20A and 20B are inserted is formed between the upper and

lower flanges

46a and 46b. Note that the flange may be formed on at least one of the upper wing plate 43 and the lower wing plate 44. For example, in a reverse-use slide fastener as shown in FIG. 1 in which the

fastener element rows

30A, 30B are arranged on the lower surface side of the

fastener tapes

20A, 20B, the flange may be provided only on the lower wing plate 44 of the slider. .

In addition, the left and

right flanges

46a and 46b guide the inverted portion 33 of the fastener element 31 that is separated on the shoulder side of the element guide path 48, and the inverted portion 33 of the fastener element 31 that is in a meshed state on the rear side of the element guide path 48. It is formed to guide the reversing part 33 (see FIG. 7A).
Further, as shown in FIG. 7A, the inner surfaces of the left and

right flanges

46a and 46b include a parallel portion 46b1 extending from the rear mouth and parallel to each other, and a curved portion that curves away from the parallel portion 46b1 toward the shoulder mouth side. 46b2, and a straight portion 46b3 extending further away from each other from the curved portion 46b2 toward the shoulder side. Although only the flange 46b of the lower wing plate 44 is illustrated in FIG. 7A, the flange 46a of the upper wing plate 43 also has the same shape when viewed from above, and includes a parallel portion, a curved portion, and a straight portion. has. Moreover, in FIG. 7A, the two-dot chain line represents the boundary position of the parallel part 46b1, the curved part 46b2, and the straight part 46b3.

Returning to FIG. 1, the opening tool 60 includes a box bar 61 and a box body 62 that are arranged on one of the left and right

fastener element rows

30A and 30B, that is, on the rear end side of the fastener element 30A, and a box bar 61 and a box body 62 that are arranged on the rear end side of the left and right

fastener element rows

30A and 30B. .

The insert pin 70 is attached to the rear end of the tape side edge 21 of the fastener tape 20A by injection molding. As shown in FIG. 3, the insert pin 70 includes a prismatic insert pin main body 71 and a side surface 71a on the box pin side of the insert pin main body 71 that faces the box pin 61 on the front side of the insert pin main body 71. It has a lateral protrusion 72 that further protrudes toward the box pin 61 side, and a front protrusion 73 that protrudes forward from the front surface 71b of the insert pin body 71.

A meshing portion 74 that can mesh with the meshing head 32 of the rearmost element 31a of one fastener element row 30A, which is closest to the box bar 61, is formed in front of the side protrusion 72. Further, between the engaging portion 74 and the front protruding portion 73, there is provided a housing portion 75 that accommodates the rear half of the engaging head 32 of the rearmost element 31a of one fastener element row 30A. Furthermore, a fitting recess 76 whose upper surface side is cut out is formed at the rear of the lateral protrusion 72 . Furthermore, a stepped surface 77 may be formed in the widthwise intermediate portion of the side protrusion 72 and the engaging portion 74 along the front-rear direction. When the insert pin 70 is pulled out from the slider 40, if the lock pin of the slider 40 falls between the engaging portion 74 and the engaging head 32 of the rearmost element 31a, it becomes difficult to pull out the insert pin 70. The formation of the step surface 77 makes it difficult for the lock pin to fall between the engaging portion 74 and the engaging head 32, and the insert pin 70 can be easily pulled out from the slider 40.

The front protruding part 73 includes a bulging part 73a that bulges out to the side opposite to the box bar 61 from the side surface 71b of the insert pin main body part 71 on the side opposite to the box bar. It is connected to the side surface 71b on the box rod side. This bulging portion 73a can come into contact with the flange 46b when pulling up the slider 40 (see FIG. 7B), which will be described later, and suppresses movement of the insert pin 70 in the direction away from the box pin 61. It acts to properly engage the engaging head 32 of the rearmost element 31a of the row 30A with the engaging portion 74.

Furthermore, in this embodiment, the box bar 61 and the box body 62 are integrally formed by injection molding, and are attached to the rear end of the tape side edge 21 of the fastener tape 20A. However, the box bar 61 and the box body 62 may be molded separately, and the box bar 61 may be attached to the box body 62.

As shown in FIGS. 4 to 6, an engaging portion 63 is formed on the side surface of the box pin 61 on the insert pin side, the upper surface of which protrudes and is inserted into the insertion recess 76 of the insert pin 70. A step portion 64 into which the lateral protrusion 72 fits is formed in front of the step portion 64 . Further, on the side surface of the box pin 61 opposite to the insert pin, an upright surface 61a is formed along the front-rear direction of the slide fastener 10 and can face the inner surfaces of the

flanges

46a, 46b of the slider 40. The upright surface 61a may be a flat surface extending substantially perpendicularly from the front surface 65a of the box main body portion 65 toward the front side. A curved surface that is curved and forms the tip of the box rod 61 is connected to the front side of the upright surface 61a.

The box body 62 is formed in a substantially rectangular parallelepiped shape, and is provided in front of the box body part 65 and the box body part 65 that is parallel to each other on both sides in the width direction and has side surfaces along the front and rear direction of the slide fastener 10. It has an extension part 66 extending forward from inside the outer surface of the box main body part 65. Therefore, as shown in FIG. 5, the width W1 of the extending portion 66 is smaller than the width of the box body portion 65.

A box rod 61 is integrally formed on one side in the width direction of the box body 62, while an insert pin insertion hole 67 is formed on the other side in the width direction of the box body 62, penetrating in the front-rear direction and also opening on the side surface. is formed. As a result, the insert pin 70 can be inserted into the insert pin insertion hole 67 on the other side of the box body 62 in the width direction.

In front of the extending portion 66, that is, on the front surface of the box body 62, an inclined surface 68 is formed which is inclined backward from the box pin 61 side toward the insert pin insertion hole 67 side. The inclination angle θ of the inclined surface 68 is in the range of 5 to 12 degrees with respect to the width direction in which the left and right

fastener element rows

30A and 30B are arranged. In addition, in this embodiment, the position where the inclined surface 68 becomes the same height as the front surface 65a of the box main body part 65 is called the insert pin insertion hole side end 68a. The insert pin insertion hole side end 68a is connected to the front surface 65a of the box main body 65.
Thereby, the box rod 61 is provided on one side in the width direction of the box body 62 so as to protrude forward from the inclined surface 68 of the extension portion 66.

As shown in FIG. 6, the length L1 of the portion of the box bar 61 protruding from the box body 62 is defined as the length L1 of the part of the box bar 61 that protrudes from the box body 62 from the bottom surface 67a of the insert pin insertion hole 67 of the box body 62 to the tip of the box bar 61 in the longitudinal direction of the box bar 61. It is set to 35 to 45% of the length L up to.

In the slide fastener 10 configured as described above, when closing the slide fastener 10 by engaging the pair of

fastener element rows

30A and 30B, first, the slider 40 is brought into contact with the inclined surface 68 that is the front surface of the box body 62. Pull down the slider 40 until the

Here, as shown in FIG. 7A, the rearmost element 31a of one fastener element row 30A enters deeper into the rear opening side of the slider 40, so the rearmost element 31a of one fastener element row 30A The engaging head 32 approaches the element guide path 48 on the insert pin 70 side. That is, in a top view, the engaging head 32 of the rearmost element 31a of one fastener element row 30A extends beyond the extension line X of the side surface of the engaging portion 63 of the box rod 62 to the insert pin 70 side in the left-right direction. approach the element guide path 48.

However, in the slider 40, the

flanges

46a, 46b on the box rod side are farther from the box main body part 65 than the

flanges

46a, 46b on the insert pin side, and the slider 40 is located on the front surface of the box main body part 65, that is, in the left and right fastener element rows. The posture is inclined with respect to the width direction in which 30A and 30B are lined up.
Therefore, since the element guide path 48 on the insert pin 70 side is inclined in the direction away from the engaging head 32 of the rearmost element 31a of one fastener element row 30A, a wide element guide path 48 on the insert pin 70 side is ensured. can. As a result, the collision between the engagement part 74 of the insert pin 70 and the engagement head 32 of the rearmost element 31b is minimized, and the insert pin 70 is inserted into the box body 62 through the element guide path 48 of the slider 40. It is inserted smoothly into the hole 67.

Note that the inclined surface 68 has an inclination angle θ of 5 degrees or more with respect to the width direction in which the left and right

fastener element rows

30A and 30B are lined up, so that when inserting the insert pin 70, the above-mentioned insert pin 70 side A wide element guide path 48 can be secured. In addition, by setting the inclination angle θ to 12 degrees or less, the element guide path 48 on the insert pin 70 side and the insert pin insertion hole 67 of the box body 62 are bent greatly, making it difficult to insert the insert pin 70. It's suppressed.

As shown in FIG. 7A, when the insert pin 70 is inserted into the insert pin insertion hole 67 of the box body 62 and the slider 40 is in contact with the inclined surface 68 of the box body 62, the slider 40 is pulled up. This will be the starting position.

At this pulling start position, the engaging head 32 of the rearmost element 31a of one fastener element row 30A is in contact with the engaging portion 74 provided on the insert pin 70.

In this embodiment, at the pulling start position of the slider 40, the engaging head 32 of the rearmost element 31a of one fastener element row 30A is in contact with the engaging part 74 provided on the insert pin 70; Even if they are not in contact, they only need to be close. Here, the engagement head 32 of the rearmost element 31a is close to the engagement part 74 provided on the insert pin 70, as shown in FIG. This refers to a case where the distance D1 between the portion 32 and the engagement portion 74 of the insert pin 70 is shorter than the distance D2 between the engagement head 32 of the rearmost element 31a and the guide post 45.

As described above, at the pulling start position of the slider 40, the

rearmost elements

31a, 31b of the pair of

fastener element rows

30A, 30B are in a state where they are inserted into the rear side of the slider. In this state, the entire upright surface 61a of the box pin 61 formed on the side opposite to the side facing the insert pin 70 faces the parallel portions 46b1 of the

flange portions

46a, 46b. Furthermore, the inverted portion 33 of the rearmost element 31a of one fastener element row 30A is guided by the curved portion 46b2 of the

flange portions

46a, 46b.

Here, in the slide fastener 10 of this embodiment, since a water stop film is attached to the

fastener tapes

20A and 20B, force is required to pull up the slider 40 at the pulling start position of the slider 40. When attempting to pull it up, the slider 40 is twisted toward the box bar in the order of FIGS. 7B and 7C, starting from the connecting portion 69 between the inclined surface 68 and the upright surface 61a of the box bar 61.

At this time, at the slider pulling start position, the rearmost element 31a of one fastener element row 30A contacts the

flanges

46a and 46b, and the engaging head 32 of the rearmost element 31a is attached to the insert pin 70. The contact portion 74 is in close proximity to or in contact with the engaging portion 74 . Further, although the engaging head 32 of the rearmost element 31a of one fastener element row 30A does not contact the engaging head 32 of the rearmost element 31b of the other fastener element row 30B, the conventional They are closer to each other than in the case of slide fasteners.

Therefore, when the slider 40 is twisted, the engaging head 32 of the rearmost element 31a of one fastener element row 30A remains in contact with the engaging part 74 provided on the insert pin 70, as shown in FIG. 7B. , also comes into contact with the engaging head 32 of the rearmost element 31b of the other fastener element row 30B pushed by the

flange portions

46a, 46b. Then, when the slider 40 is further twisted, the engaging head 32 of the rearmost element 31a of one fastener element row 30A engages with the engaging portion 74 and the engaging head 32 of the rearmost element 31b of the other fastener element row 30B. They pass through the gap and become engaged. Therefore, the engagement heads 32 of the

rearmost elements

31a, 31b are prevented from colliding with each other and not being properly engaged, and the slider 40 is then pulled up smoothly.

As explained above, according to the slide fastener 10 of the present embodiment, at the pulling start position of the slider 40, the engaging head 32 of the rearmost element 31a of one fastener element row 30A is attached to the insert pin 70. It is close to or in contact with the meshing part 74. As a result, even if the slider 40 is twisted, the

rearmost elements

31a, 31b of the pair of

fastener element rows

30A, 30B are prevented from colliding and not engaging correctly, and the operation when pulling up the slider 40 is prevented. can improve sexual performance.

Further, according to the slide fastener opening tool 60 of this embodiment, the length L1 of the portion of the box bar 61 protruding from the box body 62 is the length L1 of the insert pin insertion hole of the box body 62 in the longitudinal direction of the box bar 61. The length L from the bottom surface 67a of the box bar 67 to the tip of the box bar 61 is set to 35 to 45%. That is, by shortening the length of the box bar 61 so that the length L1 of the box bar 61 is 45% or less of the length L, the end of one fastener element row 30A is The end element 31a enters deeper into the rear mouth side of the slider 40. As a result, even if the slider 40 is twisted when pulling up the slider 40, the

rearmost elements

31a, 31b of the pair of

fastener element rows

30A, 30B are prevented from colliding with each other and not engaging correctly, and the slider 40 is prevented from colliding with each other and not being properly engaged. It is possible to improve the operability when pulling up. On the other hand, by setting the length L1 of the box pin 61 to 35% or more of the length L, the insertability of the insert pin 70 and the appearance of the box body 62 can be maintained.

It should be noted that the present invention is not limited to what has been exemplified in the above embodiments, and can be modified as appropriate without departing from the gist of the present invention.
For example, in the first modification shown in FIG. 9A, the extending portion 66 of the box body 62 has side surfaces along the front and back direction of the slide fastener 10 on both the box pin 61 side and the insert pin insertion hole 67 side. It is structured as follows.
In this case, compared to the above embodiment, the length L1 of the portion of the box bar 61 protruding from the box body 62 is shortened, and the box bar 61 extends from the bottom surface 67a of the insert pin insertion hole 67 of the box body 62 in the longitudinal direction of the box bar 61. The ratio of the length L1 of the box bar 61 to the length L to the tip of the bar 61 becomes small. As a result, at the pulling start position of the slider 40, the rearmost element 31a of one fastener element row 30A enters deeper into the rear side of the slider 40, and the rearmost element 31a of one fastener element row 30A engages. The head 32 comes closer to or comes into contact with the engaging portion 74 provided on the insert pin 70 more easily.

Further, in a second modification shown in FIG. 9B, the box body 62 does not include the extension portion 66, and the box body portion 65 is made longer in the longitudinal direction of the box bar 61, so that the box body portion 62 has a front surface of the box body portion 65. A configuration may also be adopted in which the inclined surface 68 is formed on.
Also in this case, as in the first modification, the length L1 of the portion of the box bar 61 protruding from the box body 62 is shortened, and the bottom surface of the insert pin insertion hole 67 of the box body 62 in the longitudinal direction of the box bar 61 is shortened. The ratio of the length L1 of the box bar 61 to the length L from 67a to the tip of the box bar 61 becomes small.

Furthermore, in the third modification shown in FIG. The front surface is formed along the width direction of the box body 62 without having the inclined surface 68.

In this case as well, similarly to the above embodiment, the length of the box pin 61 with respect to the length L from the bottom surface 67a of the insert pin insertion hole 67 of the box body 62 to the tip of the box pin 61 in the longitudinal direction of the box pin 61. The ratio of L1 is set to 35-45%. As a result, as shown in FIG. 11A, at the pull-up start position of the slider 40, the rearmost element 31a of one fastener element row 30A enters deeper into the rear opening side of the slider 40, and one fastener element row 30A The engagement head 32 of the rearmost element 31a is in close proximity to or in contact with the engagement portion 74 provided on the insert pin 70.

Furthermore, as shown in FIG. 11B, even if the slider 40 is twisted, the engaging head 32 of the rearmost element 31a of one fastener element row 30A remains in contact with the engaging part 74 provided on the insert pin 70. As it is, it passes between the engaging portion 74 and the engaging head 32 of the rearmost element 31b of the other fastener element row 30B, and is in an engaged state. Therefore, the engagement heads 32 of the

rearmost elements

In addition, in the case where the box body 62 does not have an inclined surface as in the third modification, in order to ensure insertability of the insert pin 70 into the box body 62, the insert pin 70 is attached to the front protrusion 73. While maintaining the width of the bulging portion 73a, the concave curved surface 73b may be made more concave to make the insert pin 70 thinner.

Further, in the fourth modification shown in FIG. 12, the box 62 has a configuration that does not have an inclined surface as in the third modification, but the box 62 has a box main body as in the above embodiment. It has a section 65 and an extension section 66. Therefore, the front surface of the extending portion 66 is parallel to the front surface of the box body portion 65 and is formed along the width direction of the box body 62.

Further, in the above embodiment, the present invention is applied to a reverse slide fastener in which the fastener element rows are arranged on the lower surface side of the fastener tape, but the present invention is not limited to this. The present invention may be applied to a front-use slide fastener placed on the side.

Further, in the above embodiment, the opening tool of the present invention is applied to a water-stopping slide fastener in which a water-stopping film is attached to a woven fastener, but the present invention is not limited to this, and the opening tool is applied to It can be suitably applied to slide fasteners in which the slider tends to be twisted.

As mentioned above, the following matters are disclosed in this specification.
(1) a pair of fastener stringers having a pair of fastener tapes and a pair of fastener element rows respectively provided on opposing tape side edges of the pair of fastener tapes;
an opening tool having a box bar and a box body arranged on the rear end side of one of the pair of fastener element rows, and an insert pin arranged on the other rear end side of the pair of fastener element rows;
an upper wing plate and a lower wing plate that are spaced apart in the vertical direction and arranged in parallel; a guide column that connects the upper wing plate and the lower wing plate at a front end; and at least one of the upper wing plate and the lower wing plate. a flange portion provided on one rear side edge, and a slider that engages and separates the pair of fastener element rows;
A slide fastener comprising:
The box rod is provided on the box body so as to protrude forward from the box body on one side in the width direction where the pair of fastener element rows are arranged, and the insert pin is inserted in the other side in the width direction. A possible insert pin insertion hole is formed,
The insert pin includes a meshing portion that can engage with a meshing head of the rearmost element of the one fastener element row,
At the pull-up start position of the slider where the insert pin is inserted into the insert pin insertion hole of the box body and the slider contacts the front surface of the box body, the engagement head of the rearmost element of the one fastener element row is a slide fastener that is close to or in contact with the engaging portion provided on the insert pin.
According to this configuration, even if the slider is twisted when pulling up the slider, the rearmost elements of a pair of fastener element rows are prevented from colliding with each other and not being properly engaged, thereby improving operability when pulling up the slider. can be improved.

(2) The front surface of the box body has an inclined surface that slopes backward from the box rod side toward the insert pin insertion hole side,
The slide fastener according to (1), wherein at the pulling start position of the slider, the slider is inclined with respect to the width direction in which the pair of fastener element rows are lined up.
According to this configuration, when the slider is in contact with the inclined surface that is the front surface of the box body, the collision between the engaging part of the insert pin and the engaging head of the rearmost element of the other fastener element row is minimized, The insert pin can be smoothly inserted into the insert hole of the box body.

(3) The slide fastener according to (2), wherein the inclined surface is inclined within a range of 5 to 12 degrees with respect to the width direction in which the pair of fastener element rows are arranged.
According to this configuration, the insert pin can be smoothly inserted into the insert pin insertion hole of the box body while the slider is in contact with the inclined surface that is the front surface of the box body.

(4) The box body includes a box body part in which the insert pin insertion hole is provided, and an extension part that is continuous from the box body part and constitutes a front surface of the box body,
The width of the extending portion is smaller than the width of the box main body portion,
The slide fastener according to (2) or (3), wherein the end of the inclined surface on the side of the insert pin insertion hole is connected to the front surface of the box main body.
With this configuration, the end of the inclined surface on the side of the insert pin insertion hole is connected to the front of the box main body without a step, so the dimensions of the extension can be reduced and the appearance of the box can be maintained as much as possible. can do.

(5) The box body includes a box body part in which the insert pin insertion hole is provided, and an extension part that is continuous from the box body part and constitutes a front surface of the box body,
The slide fastener according to any one of (1) to (3), wherein the width of the extending portion is smaller than the width of the box body portion.
According to this configuration, while keeping the dimensions of the box main body the same as those of conventional products, the dimensions of the extending portion can be reduced, and the appearance of the box can be maintained as much as possible.

(6) The slider includes parallel parts parallel to each other extending from the rear opening on the inner surface of the flange part,
The box pin has an upright surface along the front-rear direction of the slide fastener on a side opposite to the side facing the insert pin,
The slide fastener according to any one of (1) to (5), wherein the entire upright surface of the box bar faces the parallel portion of the flange portion at the pulling start position of the slider.
According to this configuration, at the pulling start position of the slider, the rearmost element of one fastener element row enters deeper into the rear mouth side of the slider, and the engaging head of the rearmost element of one fastener element row , it becomes easy to approach or come into contact with the engaging part provided on the insert pin.

(7) For slide fasteners having a box bar and a box body that can be placed on the rear end side of one of a pair of fastener element rows, and an insert pin that can be placed on the other rear end side of a pair of fastener element rows. An opening tool,
The box rod is provided on one side in the width direction of the box body and protrudes forward from the box body, and the insert pin is inserted in the other side in the width direction of the box body. A possible insert pin insertion hole is formed,
The length of the portion of the box bar protruding from the box body is 35 to 45% of the length from the bottom of the insert pin insertion hole of the box body to the tip of the box bar in the longitudinal direction of the box bar. An opening tool for slide fasteners.
According to this configuration, at the slider pulling start position, the rearmost element of one fastener element row is in a state deeper into the rear opening side of the slider, and even if the slider is twisted when pulling the slider, It is possible to prevent the rearmost elements of the fastener element rows from colliding with each other and not properly engaging each other, and it is possible to improve the operability when pulling up the slider.

(8) The slide fastener opening tool according to (7), wherein the front surface of the box body has an inclined surface that slopes backward from the box rod side toward the insert pin insertion hole side.
According to this configuration, when the slider is in contact with the inclined surface that is the front surface of the box body, the collision between the engaging part of the insert pin and the engaging head of the rearmost element of the other fastener element row is minimized, The insert pin can be smoothly inserted into the insert hole of the box body.

(9) The slide fastener opening tool according to (8), wherein the inclined surface is inclined within a range of 5 to 12 degrees with respect to the width direction of the box body.
According to this configuration, the insert pin can be smoothly inserted into the insert pin insertion hole of the box body while the slider is in contact with the inclined surface that is the front surface of the box body.

(10) The box body includes a box body part in which the insert pin insertion hole is provided, and an extension part that is continuous from the box body part and constitutes a front surface of the box body,
The width of the extending portion is smaller than the width of the box main body portion,
The slide fastener opening tool according to (8) or (9), wherein the end of the inclined surface on the side of the insert pin insertion hole is connected to the front surface of the box main body.
With this configuration, the end of the inclined surface on the side of the insert pin insertion hole is connected to the front of the box main body without a step, so the dimensions of the extension can be reduced and the appearance of the box can be maintained as much as possible. can do.

(11) The box body includes a box body part in which the insert pin insertion hole is provided, and an extension part that is continuous from the box body part and constitutes a front surface of the box body,
The opening tool for a slide fastener according to any one of (7) to (9), wherein the width of the extending portion is smaller than the width of the box main body portion.
According to this configuration, while keeping the dimensions of the box main body the same as those of conventional products, the dimensions of the extending portion can be reduced, and the appearance of the box can be maintained as much as possible.

10 Slide fastener 11

Upper stop portion

20A, 20B Fastener tape 21 Tape

side edge portion

22A,

22B Fastener stringer

30A, 30B Fastener element row 31 Fastener element 40 Slider 43 Upper wing plate 44 Lower wing plate 45

Guide column

46a, 46b Flange portion 60 Opening tool 61 Box rod 61a Upright surface 62 Box body 65 Box main body part 66 Extension part 67 Insert pin insertion hole 68 Inclined surface 70 Insert pin 74 Engagement part

Claims

A pair of fastener stringers (22A, 20B) each having a pair of fastener element rows (30A, 30B) provided on opposing tape side edges (21) of the pair of fastener tapes (20A, 20B), respectively. 22B) and
A box bar (61) and a box body (62) arranged on the rear end side of one of the pair of fastener element rows, and an insert pin (70) arranged on the other rear end side of the pair of fastener element rows. and an opening tool (60) having the following.
An upper wing plate (43) and a lower wing plate (44) that are arranged in parallel and spaced apart in the vertical direction, and a guide column that connects the upper wing plate (43) and the lower wing plate (44) at the front end portion ( 45), and a flange portion (46a, 46b) provided on the rear side edge of at least one of the upper wing plate (43) and the lower wing plate (44), and the pair of fastener element rows ( 30A, 30B) and a slider (40) that engages and separates them;
A slide fastener (10) comprising:
The box rod (61) is provided on the box body (62) on one side in the width direction where the pair of fastener element rows are lined up, protruding forward from the box body, and on the other side in the width direction. , an insert pin insertion hole (67) into which the insert pin (70) can be inserted is formed;
The insert pin (70) includes an engaging portion (74) that can engage with the engaging head (32) of the rearmost element (31a) of the one fastener element row (30A),
The insert pin (70) is inserted into the insert pin insertion hole (67) of the box body (62), and the slider (40) is at the pulling start position of the slider in contact with the front surface of the box body (62). , the engagement head (32) of the rearmost element (31a) of the one fastener element row (30A) is a slide fastener that is close to or in contact with the engagement part (74) provided on the insert pin (70). (10).
The front surface of the box body (62) has an inclined surface (68) that slopes backward from the box rod (61) side toward the insert pin insertion hole (67) side,
The slide fastener (10) according to claim 1, wherein at the pulling start position of the slider (40), the slider (40) is inclined with respect to the width direction in which the pair of fastener element rows are lined up.
The slide fastener (10) according to claim 2, wherein the inclined surface (68) is inclined within a range of 5 to 12 degrees with respect to the width direction in which the pair of fastener element rows are arranged.
The box body (62) includes a box body part (65) in which the insert pin insertion hole is provided, and an extension part (66) that is continuous from the box body part (65) and constitutes the front surface of the box body. ) and,
The width (W1) of the extension part is smaller than the width (W2) of the box body part,
The slide fastener (10) according to claim 2 or 3, wherein the end (68a) of the inclined surface (68) on the side of the insert pin insertion hole is connected to the front surface (65a) of the box main body (65). ).
The box body (62) includes a box body part (65) in which the insert pin insertion hole is provided, and an extension part (66) that is continuous from the box body part (65) and constitutes the front surface of the box body. ) and,
The slide fastener (10) according to any one of claims 1 to 3, wherein the width (W1) of the extending portion is smaller than the width (W2) of the box body portion.
The slider (40) includes parallel parts (46b1) extending from the rear opening and parallel to each other on the inner surface of the flange parts (46a, 46b),
The box pin (61) has an upright surface (61a) along the front-rear direction of the slide fastener on a side opposite to the side facing the insert pin,
The device according to any one of claims 1 to 5, wherein the entire upright surface (61a) of the box bar (61) faces the parallel portion of the flange portion at the pulling start position of the slider (40). Slide fastener (10).
A box bar (61) and a box body (62) that can be placed on one rear end side of a pair of fastener element rows (30A, 30B), and a box bar (62) that can be placed on the other rear end side of a pair of fastener element rows (30A, 30B). An opening tool (60) for a slide fastener, having a positionable insert pin (70),
The box rod (61) is provided on one side of the box in the width direction of the box to protrude forward from the box, and the box bar (61) is provided on the other side of the box in the width direction of the box. , an insert pin insertion hole (67) into which the insert pin (70) can be inserted is formed;
The length (L1) of the portion of the box bar protruding from the box body is defined as the length (L1) of the portion of the box bar that protrudes from the box body from the bottom surface (67a) of the insert pin insertion hole (67) of the box body to the tip of the box bar in the longitudinal direction of the box bar. An opening tool (60) for a slide fastener, which is 35 to 45% of the length (L) up to.
The slide fastener according to claim 7, wherein the front surface of the box body (62) has an inclined surface (68) that slopes backward from the box rod (61) side toward the insert pin insertion hole (67) side. opening tool (60).
The slide fastener opening tool (60) according to claim 8, wherein the inclined surface (68) is inclined within a range of 5 to 12 degrees with respect to the width direction of the box body.
The box body (62) includes a box body part (65) in which the insert pin insertion hole is provided, and an extension part (66) that is continuous from the box body part (65) and constitutes the front surface of the box body. ) and,
The width (W1) of the extending portion is smaller than the width (W2) of the box main body, and the end (68a) of the inclined surface (68) on the inserting hole side ) The opening tool (60) for a slide fastener according to claim 8 or 9, which is connected to the front surface (65a) of the slide fastener.
The box body (62) includes a box body part (65) in which the insert pin insertion hole is provided, and an extension part (66) that is continuous from the box body part (65) and constitutes the front surface of the box body. ) and,
The opening tool (60) for a slide fastener according to any one of claims 7 to 9, wherein the width (W1) of the extending portion is smaller than the width (W2) of the box body portion.