WO2020003395A1

WO2020003395A1 - Slide fastener, and slider for slide fastener

Info

Publication number: WO2020003395A1
Application number: PCT/JP2018/024316
Authority: WO
Inventors: 一輝細江
Original assignee: Ykk株式会社
Priority date: 2018-06-27
Filing date: 2018-06-27
Publication date: 2020-01-02
Also published as: TWI676434B; TW202000068A

Abstract

[Problem] To provide a slide fastener, and a slider for a slide fastener, with which it is possible to reduce the gap occurring between a pair of sliders and improve water-tightness, and to impart a sense of security to a user, when the slide fastener is closed in a curved state in which the slide fastener chain curves in the vertical direction. [Solution] A slide fastener 1 comprises: a slide fastener chain 2; and a pair of sliders 3A, 3B disposed along fastener element rows 22A, 22B such that the head parts 38 are facing each other. Each of the pair of sliders 3A, 3B comprises an upper wing plate 30 and a lower wing plate 31, and a guide column 32. The upper wing plate front end part 300 of the upper wing plate 30 is disposed closer to the approaching direction side than the lower wing plate front end part 310 of the lower wing plate 31, and the guide column 32 is disposed on a line L1 connecting the upper wing plate front end part 300 and the lower wing plate front end part 310, or closer to the departing direction side than the line L1.

Description

Slide fastener and slider for slide fastener

The present invention relates to a slide fastener and a slider for the slide fastener.

Conventionally, a head-to-head slide fastener in which a pair of sliders are arranged with their heads facing each other has been used so that openings of various products such as bags and clothes can be opened and closed at arbitrary positions.

For example, in a head-to-head type slide fastener described in Patent Document 1, one slider upper wing plate is disposed so as to protrude toward the other slider side from a lower blade plate (see FIG. 9 of Patent Document 1, The lower wing plate of the other slider is arranged so as to protrude toward the one slider side from the upper wing plate (see FIGS. 7 and 8 of Patent Document 1). When the slide fastener is closed, the front ends of the upper blades are in contact with each other, so that no gap is formed between the pair of sliders.

Further, in the head-to-head slide fastener described in Patent Literature 2, a pair of sliders has an extension 8 and a lock hole 7 in a tab attaching portion, and when the slide fastener is closed, one of the sliders is closed. The extension portion 8 rides on the guard 9 on the upper surface of the upper wing plate of the other slider, and the lock hole 7 of one slider overlaps the lock hole 7 of the other slider (see Patent Document 2). 7 and 8).

Chinese Utility Model No. 205321439 Chinese Patent No. 104770947

When the head-to-head type slide fastener is used in various products such as bags and clothing, the shape of the product itself is curved, or the shape of the product changes to a curved shape depending on the use condition of the product. By doing so, the slide fastener may be used in a curved state in which the slide fastener chain is curved so as to expand upward in a vertical direction perpendicular to the upper and lower blades of the slider.

In the case where the head-to-head slide fastener described in Patent Document 1 is used in the curved state as described above, when the slide fastener is closed, the front ends of the lower blades come into contact with each other. The front ends of the vanes do not contact each other. As a result, a gap is formed between the front end of the upper wing plate of one slider and the front end of the upper wing plate of the other slider. The fact that it is not closed gives the user anxiety.

Further, when the head-to-head type slide fastener described in Patent Document 2 is used in a curved state as described above, when the slide fastener is closed, the extension 8 rises up from the guard 9 and the lock hole 7 moves. Are displaced without overlapping, so that the functions to be performed by the extending portion 8 and the lock hole 7 are impaired.

Furthermore, when the slide fastener of the head-to-head type described in Patent Document 2 is used in a linear state in which the slide fastener chain is not curved in the vertical direction, when the slide fastener is closed, a lock hole 7 is formed. The front end of the outer peripheral portion that comes into contact with the front end of the puller mounting portion facing the front end comes into contact with each other, but the front ends of the upper blades are separated from each other (see FIGS. 8 and 10-11 of Patent Document 2). , 14). When a force for turning the slide fastener chain into a curved state from such a state acts on the slide fastener chain, the corner portion of the outer peripheral portion forming the lock hole 7 is hooked on the front end portion of the handle mounting portion. When a larger force acts on the slide fastener chain and the slide fastener chain is bent, the corner of the outer peripheral portion forming the lock hole 7 moves upward along the front end of the puller mounting portion. However, the front ends of the upper blades are further separated from each other.

Therefore, the head-to-head slide fastener described in Patent Document 2 is not intended to be used in a curved state in which the slide fastener chain is curved so as to expand upward.

The present invention has been made in view of such circumstances, and reduces a gap generated between a pair of sliders when a slide fastener is closed in a curved state in which the slide fastener chain is bent in a vertical direction. Another object of the present invention is to provide a slide fastener and a slider for the slide fastener, which can improve the water stoppage and give a sense of security to the user.

The slide fastener according to one embodiment of the present invention,
A pair of fastener tapes arranged to face each other in the left-right direction, and a slide fastener chain including a fastener element row fixed to the edges of the pair of fastener tapes; and a slide fastener chain slidably attached to the slide fastener chain. A pair of sliders, the heads of which are arranged to face each other along the fastener element row,
Each of the pair of sliders,
An upper wing plate and a lower wing plate that are arranged opposite to each other in the vertical direction with the fastener element row interposed therebetween,
A guide column connecting the upper wing plate and the lower wing plate,
When the direction in which the pair of sliders approach and separate from each other is a direction orthogonal to the left and right direction and the up and down direction, and the approach direction and the separation direction,
The upper wing plate front end, which is the end in the approach direction of the upper wing plate, is disposed closer to the approach direction than the lower wing plate front end, which is the end in the approach direction of the lower wing plate,
The guide column is disposed on a line connecting the upper blade front end and the lower blade front end, or on the separation direction side than the line,
It is characterized by the following.

The slide fastener according to one embodiment of the present invention,
The upper wing plate, when the heads of the pair of sliders are in contact with each other, includes an upper wing plate contact surface that makes line contact or surface contact in the left-right direction.
It is characterized by the following.

The slide fastener according to one embodiment of the present invention,
The pair of sliders maintains a state where the upper wing plate contact surfaces are in contact with each other when the arrangement state in the vertical direction of the slide fastener chain including the portion where the heads of the pair of sliders abut each other changes. Follow the change of the arrangement state,
It is characterized by the following.

The slide fastener according to one embodiment of the present invention,
The upper wing plate contact surface is visible from above the pair of sliders, and is continuous between an upper wing plate left end and an upper wing plate right end which are both ends in the left-right direction of the upper wing plate. Placed in the
It is characterized by the following.

The slide fastener according to one embodiment of the present invention,
The inclination of the line with respect to the vertical direction is set according to a curvature when the slide fastener chain is arranged in a curved state curved in the vertical direction,
It is characterized by the following.

The slide fastener according to one embodiment of the present invention,
The upper blade rear end, which is the separation-side end of the upper blade, is disposed closer to the separation direction than the lower blade rear end, which is the separation-side end of the lower blade. Done,
It is characterized by the following.

The slide fastener according to one embodiment of the present invention,
The upper wing plate left end and the upper wing plate right end which are both ends in the left and right direction of the upper wing plate are the lower wing plate left end and the lower wing plate right end which are both left and right ends of the lower wing plate. Located on the left and right sides respectively,
It is characterized by the following.

The slide fastener according to one embodiment of the present invention,
The lengths of the upper blade in the approach direction and the separation direction are longer than the lengths of the lower blade in the approach direction and the separation direction, and the width of the upper blade in the left-right direction is smaller than the lower blade. Wider than the horizontal width of the plate,
It is characterized by the following.

A pair of sliders for a slide fastener according to one embodiment of the present invention,
A pair of fastener tapes disposed to face each other in the left-right direction, and a pair of slide fasteners slidably attached to a slide fastener chain including a row of fastener elements fixed to the edges of the pair of fastener tapes. A slider,
The pair of sliders are arranged with their heads facing each other along the fastener element row,
Each of the pair of sliders,
An upper wing plate and a lower wing plate that are arranged opposite to each other in the vertical direction with the fastener element row interposed therebetween,
A guide column connecting the upper wing plate and the lower wing plate,
When the direction in which the pair of sliders approach and separate from each other in a direction orthogonal to the left-right direction and the up-down direction is an approach direction and a separation direction,
The upper wing plate front end, which is the end in the approach direction of the upper wing plate, is disposed closer to the approach direction than the lower wing plate front end, which is the end in the approach direction of the lower wing plate,
The guide post is disposed on a line connecting the upper blade front end and the lower blade front end, or on the separation direction side of the line,
It is characterized by the following.

According to the slide fastener and the pair of sliders for the slide fastener according to an embodiment of the present invention, the upper blade front end, which is the end in the approach direction of the upper blade, is the end in the approach direction of the lower blade. The guide column is disposed closer to the approach direction than the front end of the lower blade, which is a part, and the guide column is disposed on a line connecting the front end of the upper blade and the front end of the lower blade, or on the side away from the line. Therefore, even when the slide fastener chain is arranged in a vertically curved state, when the pair of sliders abut against each other, the upper blade front end of one slider and the other slider Contacts the front end of the upper wing plate. Therefore, when the slide fastener is closed in a state where the slide fastener chain is bent in the vertical direction, a gap generated between the pair of sliders can be reduced. Can give a sense of security.

It is a front view showing the open state where slide fastener 1 concerning one embodiment of the present invention was opened. When the fastener chain 2 according to one embodiment of the present invention is in a curved state, a slide fastener 1 is shown in a closed state, in which (a) is a front view and (b) is a rear view. FIG. 4 is a right side view showing a closed state in which the slide fastener 1 is closed when the fastener chain 2 according to the embodiment of the present invention is in a curved state. FIG. 3 is a perspective view showing a first slider 3A (second slider 3B) according to one embodiment of the present invention. 1A and 1B show a first slider 3A (second slider 3B) according to an embodiment of the present invention, wherein FIG. 1A is a front view and FIG. 1A and 1B show a first slider 3A (second slider 3B) according to an embodiment of the present invention, wherein FIG. 1A is a top view and FIG. 1B is a bottom view. FIG. 4 is a right side view showing a first slider 3A (second slider 3B) according to one embodiment of the present invention. 7A and 7B show a first slider 3A (second slider 3B) according to another embodiment of the present invention, wherein FIG. 9A is a first modification of the guide column 32, and FIG. 9B is a second modification of the guide column 32. It is a right view which shows an example.

Hereinafter, a slide fastener 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a front view showing an open state in which the slide fastener 1 according to one embodiment of the present invention is opened. 2A and 2B show a closed state in which the slide fastener 1 is closed when the fastener chain 2 according to one embodiment of the present invention is in a curved state, wherein FIG. 2A is a front view, and FIG. . FIG. 3 is a right side view showing a closed state in which the slide fastener 1 is closed when the fastener chain 2 according to one embodiment of the present invention is in a curved state.

As shown in FIG. 1, the slide fastener 1 is a head-to-head type slide in which heads 38 of a pair of sliders 3 A and 3 B including a first slider 3 A and a second slider 3 B face each other. This is called a fastener. As shown in FIG. 2A, when the slide fastener 1 is closed by the heads 38 of the pair of

sliders

3A and 3B abutting on each other, as shown in FIG. 2A, the

fastener element rows

22A and 22B are closed. It is hidden by the

fastener tapes

20A and 20B so that it cannot be seen from above, and is called a hidden slide fastener.

In the present embodiment, a direction (horizontal direction on the paper surface of FIG. 1) that is a direction horizontal to the surfaces of the pair of

fastener tapes

20A and 20B and a direction in which the pair of

fastener tapes

20A and 20B are arranged to face each other is referred to as a “lateral direction”. (LR direction). In the first slider 3A, the left side (the left direction on the paper surface of FIG. 1) and the right side (the right direction on the paper surface of FIG. 1) when the head 38 of the first slider 3A is the upper side are respectively referred to as “left direction”. (La direction) and “right direction” (Ra direction). In the second slider 3B, the left side (the right direction on the paper of FIG. 1) and the right side (the left direction on the paper of FIG. 1) when the head 38 of the second slider 3B is the upper side are respectively referred to as “left”. (Lb direction) and “right direction” (Rb direction).

Also, a direction perpendicular to the surfaces of the pair of

fastener tapes

20A and 20B, and the direction in which the upper blade 30 and the lower blade 31 of the

sliders

3A and 3B are arranged to face each other (the front-back direction on the paper surface of FIG. 1). ) Is the “vertical direction” (UD direction). In the first slider 3A, the side on which the tab 34 is provided (the front side in the plane of FIG. 1) is referred to as "upward" (Ua direction), and the tabs 34 are provided on the

sliders

3A and 3B as the opposite side. 1 (the back side on the paper surface of FIG. 1 is referred to as “downward” (Da direction). In the second slider 3B, the side on which the tab 34 is provided (the front side on the paper surface of FIG. 1) is “upward” ( Ub direction), and the opposite side of the

slider

3A, 3B where the tab 34 is not provided (the back side on the paper surface of FIG. 1 is the “downward direction” (Db direction)).

Further, the direction orthogonal to the left-right direction and the vertical direction, in which the pair of

sliders

3A and 3B approach each other, is referred to as an “approaching direction” (F direction), and the separating direction is referred to as a “separating direction” (B direction). I do. In the first slider 3A, the direction in which the first slider 3A approaches the second slider 3B (upward on the plane of FIG. 1) is referred to as an “approaching direction” (Fa direction), and the opposite direction is referred to as the first direction. The direction in which the slider 3A separates from the second slider 3B (downward on the paper surface of FIG. 1) is referred to as a “separation direction” (Ba direction). In the second slider 3B, the direction in which the second slider 3B approaches the first slider 3A (downward on the plane of FIG. 1) is referred to as “approaching direction” (Fb direction), and the opposite direction is referred to as the second direction. The direction in which the slider 3B separates from the first slider 3A (upward on the paper surface of FIG. 1) is referred to as a “separation direction” (Bb direction).

As shown in FIG. 1, the slide fastener 1 includes a pair of

fastener tapes

20A and 20B that are arranged to face each other in the left-right direction, and fasteners fixed to

edges

21A and 21B of the pair of

fastener tapes

20A and 20B, respectively. A slide fastener chain 2 having

element rows

22A and 22B, and a pair of slide fastener chains that are slidably attached to or away from the slide fastener chain 2 and that are arranged to face each other along the

fastener element rows

22A and 22B.

Sliders

3A and 3B.

The slide fastener chain 2 extends along a pair of strip-shaped

fastener tapes

20A and 20B extending in the approaching direction and the separating direction, and edges 21A and 21B on the side where the pair of

fastener tapes

20A and 20B are arranged to face each other in the left-right direction. A pair of

fastener element rows

22A and 22B arranged at a predetermined pitch, and at both ends of the

fastener element rows

22A and 22B on the separation direction side, a pair of fastener tapes 20A, A first stopper 23A and a second stopper 23B for connecting the second stopper 20B.

Each of the

fastener tapes

20A and 20B is, for example, woven or knitted with a fiber thread, and is sewn to fabrics of various products such as bags and clothes to which the slide fastener 1 is attached.

Each of the

fastener element rows

22A and 22B includes a plurality of fastener elements 220 arranged at a predetermined pitch along the

edges

21A and 21B. In the

fastener element rows

22A and 22B, for example, a plurality of fastener elements 220 are continuously attached to the

edges

21A and 21B by forming a monofilament made of synthetic resin in a coil shape or a zigzag shape. Note that the

fastener element rows

22A and 22B may be formed by using a metal material in addition to the synthetic resin material, or the individual fastener elements 220 may be attached to the

edges

21A and 21B.

において In FIG. 1, the

fastener element rows

22A and 22B arranged between the first slider 3A and the second slider 3B are in a separated state.

Fastener element rows

22A, 22B arranged between the first slider 3A and the first fastener 23A, and fastener element rows 22A arranged between the second slider 3B and the second fastener 23B. , 22B are in an engaged state. Then, when at least one of the pair of

sliders

3A and 3B moves in the approaching direction and the heads 38 of the pair of

sliders

3A and 3B come into contact with each other, as shown in FIGS. The fastener 1 is completely closed.

As an example of the arrangement of the slide fastener chain 2 in the vertical direction, the slide fastener chain 2 is arranged in a curved state so as to bulge upward in the vertical direction as shown in FIG. The curvature when the slide fastener chain 2 is arranged in a curved state may or may not be constant along the approaching direction and the separating direction, and may be, for example, a curved curved portion and a curved portion. There may be no straight portion, or there may be a large curved portion and a small curved portion.

The arrangement state of the slide fastener chain 2 in the up-down direction may be changed according to the use state of the product to which the slide fastener 1 is attached. For example, the luggage is deformed when luggage is put in a bag. Accordingly, the state may change from a straight state to a curved state, or the state may change from a small curved state to a large curved state. Then, the curvature of the slide fastener chain 2 changes according to a change in the arrangement of the slide fastener chain 2 in the up-down direction.

FIG. 4 is a perspective view showing a first slider 3A (second slider 3B) according to one embodiment of the present invention. 5A and 5B show a first slider 3A (second slider 3B) according to one embodiment of the present invention, wherein FIG. 5A is a front view and FIG. 5B is a rear view. 6A and 6B show a first slider 3A (second slider 3B) according to an embodiment of the present invention, wherein FIG. 6A is a top view and FIG. 6B is a bottom view. FIG. 7 is a right side view showing the first slider 3A (second slider 3B) according to one embodiment of the present invention. Note that the second slider 3B has the same configuration as the first slider 3A.

As shown in FIGS. 4, 5, 6, and 7, each of the pair of

sliders

3A, 3B is provided with an upper blade plate 30 that is vertically opposed across the pair of

fastener element rows

22A, 22B. And a lower wing plate 31, a guide column 32 for connecting the upper wing plate 30 and the lower wing plate 31 on the approach side of the upper wing plate 30 and the lower wing plate 31, and a pull handle provided on the upper surface of the upper wing plate 30. A mounting portion 33, a handle 34 (shown in FIG. 1) that is swingably attached to the handle mounting portion 33, a left wall portion 35 erected upward from the left and right peripheral portions of the lower blade 31, and A right side wall portion 36.

The pair of

sliders

3A and 3B is manufactured by molding or casting a metal material or a synthetic resin material. Note that the pair of

sliders

3A and 3B may be manufactured as an integrated unit, or may be manufactured by assembling a plurality of parts.

Each of the pair of

sliders

3A and 3B is a space between the upper blade 30 and the lower blade 31, and is a Y-shape defined by the guide post 32, the left side wall 35, and the right side wall 36. Element passage 37 is provided. The element passage 37 is a space that communicates a pair of left and right shoulder openings 370 through which the separated

fastener element rows

22A and 22B are inserted, and a rear opening 371 through which the meshed

fastener element rows

22A and 22B are inserted.

The pair of left and right shoulder openings 370 are located on the side in the approaching direction of the

sliders

3A and 3B. Is formed. The rear opening 371 is located on the side away from the

sliders

3A and 3B, and is formed between the left side wall 35 and the right side wall 36.

By moving at least one of the pair of

sliders

3A, 3B in the approaching direction along the

fastener element rows

22A, 22B, the

fastener element rows

22A, 22B separated from the pair of left and right shoulder openings 370 are moved to the element passage 37. Then, the

fastener element rows

22A and 22B in the separated state are engaged with each other.

On the other hand, when at least one of the pair of

sliders

3A, 3B moves in the separating direction along the

fastener element rows

22A, 22B, the meshed

fastener element rows

22A, 22B enter from the rear opening 371, and mesh with each other. The

fastener element rows

22A and 22B in the state are separated.

As described above, at least one of the pair of

sliders

3A, 3B moves in the approaching direction and the separating direction along the

fastener element rows

22A, 22B, so that the slide fastener chain 2 is opened and closed.

The upper wing plate 30 has a substantially trapezoidal outer shape, and includes an upper wing plate front end portion 300 which is an end portion on the approach direction side, an upper wing plate rear end portion 301 which is an end portion on the separation direction side, and a left end. An upper wing plate left end portion 302 which is a portion and an upper wing plate right end portion 303 which is a right end portion are provided.

When the slide fastener 1 is closed and the heads 38 of the pair of

sliders

3A and 3B come into contact with each other, the upper wing plate 30 raises the upper wing plate contact surface 304 that makes line contact or surface contact in the left-right direction. It is provided on the wing plate front end 300.

As shown in FIG. 5A, the upper wing plate contact surface 304 is visible from above the pair of sliders 3 A and 3 B, and is the left end of the upper wing plate 30, which is the left and right ends of the upper wing plate 30. 302 and the upper wing plate right end 303. Specifically, the upper wing plate contact surface 304 extends in the left-right direction as shown in FIG. 5A, and, for example, the upper wing plate left end 302 and the upper wing plate right end 303 By connecting them in a substantially straight line, they extend in a substantially straight line parallel to the left-right direction. The corner formed between the upper wing plate contact surface 304 and the upper wing plate left end 302 and the upper wing plate right end 303 has a chamfered shape.

In a case where the slide fastener chain 2 is arranged in a curved state, when the slide fastener 1 is closed, not only the tip portions of the upper blades 30 come into contact with each other, but also the upper blade contact surface of the first slider 3A. As shown in FIG. 2 (a), the upper wing plate contact surface 304 of the second slider 3 B continuously contacts the upper wing plate left end 302 and the upper wing plate right end 303. And line contact or surface contact along a substantially straight line extending in the left-right direction. At this time, not only the part where the upper wing plate contact surface 304 is completely in contact with the upper wing plate contact surface 304 but also the upper wing when the pair of

sliders

3A and 3B are viewed from above. It also includes a portion where a slight gap is generated so that the user can recognize that the plate contact surface 304 is in contact.

The lower wing plate 31 has an outer shape smaller than that of the upper wing plate 30, and includes a lower wing plate front end portion 310 which is an end portion on the approach direction side, and a lower wing plate rear end portion 311 which is an end portion on the separation direction side. , A left end portion 312 of the lower wing plate as a left end portion, and a right end portion 313 of a lower wing plate as a right end portion.

The lower wing plate 31 has a lower wing plate contact surface 314 at the front end portion 310 of the lower wing plate, which comes into contact when the slide fastener 1 is closed and the heads 38 of the pair of

sliders

3A, 3B come into contact with each other.

When the slide fastener 1 is closed in a case where the slide fastener chain 2 is arranged in a curved state, when the slide fastener 1 is closed, the lower blade contact surface 314 provided in the first slider 3A and the lower blade contact surface 314 provided in the second slider 3B. Contact as shown in FIG. 2 (b). The lower blade contact surface 314 may be line-contacted or surface-contacted in the left-right direction similarly to the upper blade contact surface 304. For example, the lower blade left end 312 and the lower blade right end 313 may be used. May be connected in a substantially straight line so as to extend in a substantially straight line parallel to the left-right direction.

As an arrangement relationship between the upper wing plate 30 and the lower wing plate 31 in the approach direction and the separation direction, the upper wing plate front end portion 300 is disposed closer to the approach direction side than the lower wing plate front end portion 310. The rear end portion 301 is arranged on the side in the direction away from the rear end portion 311 of the lower blade. Therefore, as shown in FIG. 7, the length D1 in the approach direction and the separation direction of the upper blade 30 which is the dimension between the upper blade front end 300 and the upper blade rear end 301 is smaller than the lower blade. It is longer than the length D2 between the front end 310 and the lower blade rear end 311 in the approaching direction and the separating direction of the lower blade 31.

As an arrangement relationship between the upper wing plate 30 and the lower wing plate 31 in the left-right direction, the upper wing plate left end portion 302 is disposed on the left side of the lower wing plate left end portion 312, and the upper wing plate right end portion 303 is It is arranged on the right side of the lower end 313 of the lower wing plate. Therefore, as shown in FIG. 6B, the width W1 of the upper blade 30 in the left-right direction, which is the dimension between the upper blade left edge 302 and the upper blade right edge 303, is equal to the lower blade left edge. It is wider than the width W2 of the lower blade 31 in the left-right direction, which is the dimension between the lower blade 331 and the right end 313 of the lower blade.

Therefore, the length D1 in the approach direction and the separation direction of the upper blade 30 is longer than the length D2 in the approach direction and the separation direction of the lower blade 31, and the width W1 of the upper blade 30 in the left-right direction is equal to the lower blade. The width of the upper wing plate 30 is wider than the width W2 of the plate 31 in the left-right direction, and as shown in FIG. 5B, has an outer shape larger than that of the lower wing plate 31 in the left-right direction, the approach direction, and the separation direction. That is, when the

sliders

3A and 3B are visually recognized from below, the outline of the upper blade 30 is disposed outside the outline of the lower blade 31, and conversely, the outline of the lower blade 31 is It is arranged inside the outline of the upper wing plate 30.

As shown in FIG. 7, a front end surface 320 of the guide post 32 is located between the upper wing plate 30 and the lower wing plate 31 and the guide column 32 in the approaching direction and the separating direction. It is arranged on the line L1 connecting to the lower blade front end 310 or on the separation side from the line L1.

傾き The inclination θ1 of the line L1 with respect to the up-down direction is set according to the curvature when the slide fastener chain 2 is arranged in a vertically curved state. Specifically, as the curvature of the slide fastener chain 2 increases, the distance between the upper blade front end 300 and the lower blade front end 310 in the approach direction and the separation direction increases, so that the distance D3 between the upper blade front end 300 and the lower blade front end 310 increases. The inclination θ1 of L1 is set to be large. When the slide fastener chain 2 has a large curved portion and a small curved portion, that is, when the slide fastener chain 2 has a plurality of curvatures, the inclination θ1 of the line L1 with respect to the vertical direction is the largest curved portion. You may make it set according to a curvature.

When the slide fastener chain 2 is closed in a case where the slide fastener chain 2 is arranged in a curved state so as to bulge upward in the vertical direction as shown in FIG. 3, the slide fastener chain 2 is shown in FIG. As described above, the upper wing plate contact surface 304 of the first slider 3A and the upper wing plate contact surface 304 of the second slider 3B make line contact or surface contact in the left-right direction, and the first slider 3A The lower wing plate contact surface 314 of the second slider 3B comes into contact with the lower wing plate contact surface 314 of the second slider 3B, as shown in FIG. At this time, in a portion where the front end face 320 of the guide post 32 is disposed on the line L1 connecting the upper blade front end 300 and the lower blade front end 310, the front end face 320 of the first slider 3A is provided. , Comes into contact with the front end surface 320 of the second slider 3B.

On the other hand, when the slide fastener 1 is closed when the slide fastener chain 2 is not curved in the vertical direction, that is, is arranged in a straight line parallel to the approach direction and the separation direction, the first The upper blade contact surface 304 provided in the slider 3A and the upper blade contact surface 304 provided in the second slider 3B only make line contact or surface contact in the left-right direction, and the lower blade provided in the first slider 3A. The contact surface 314 does not contact the lower blade contact surface 314 provided in the second slider 3B.

Further, when the slide fastener chain 2 is arranged in a linear state or a curved state, when the slide fastener 1 is closed, the heads 38 of the pair of

sliders

3A and 3B come into contact with each other, so that the first slider 3A The upper wing plate contact surface 304 is in contact with the upper wing plate contact surface 304 of the second slider 3B. In this state, if the arrangement state of the slide fastener chain 2 including the portion where the upper wing plate contact surfaces 304 contact each other in the vertical direction changes (for example, the slide fastener chain 2 changes from a linear state to a curved state, or vice versa). When the slide fastener chain 2 changes from a curved state to a linear state, the pair of

sliders

3A and 3B maintain the state in which the upper blade contact surfaces 304 are in contact with each other, and the arrangement state of the slide fastener chain 2 Follow changes in This is because the upper wing plate contact surface 304 is located closest to the contact direction in each of the

sliders

3A and 3B. Therefore, when the arrangement state of the slide fastener chain 2 in the vertical direction changes, the upper wing plate contact surface 304 This is because each of the pair of

sliders

3A and 3B rotates in the vertical direction with the portion where they contact each other as the rotation axis (the axis parallel to the left-right direction).

As described above, according to the slide fastener 1 according to the embodiment of the present invention, the upper blade front end 300, which is the end of the upper blade 30 on the approach direction side, is located on the approach direction side of the lower blade 31. The guide post 32 is disposed closer to the approach side than the lower blade front end 310, which is the end, and is separated from the line L 1 or the line L 1 connecting the upper blade front end 300 and the lower blade front end 310. Placed on the side. Therefore, even when the slide fastener chain 2 is arranged in a curved state curved in the vertical direction, when the pair of

sliders

3A and 3B come into contact with each other, the slide fastener chain 2 is shown in FIGS. As described above, the upper wing plate front end 300 of the first slider 3A and the upper wing plate front end 300 of the second slider 3B come into contact with each other. Therefore, when the slide fastener 1 is closed in a state where the slide fastener chain 2 is bent in the vertical direction, a gap generated between the pair of

sliders

3A and 3B can be reduced, and thus the water stopping property of the slide fastener 1 can be reduced. Can be improved, and a sense of security can be given to the user.

Further, according to the slide fastener 1 according to the embodiment of the present invention, when the heads (38) of the pair of

sliders

3A, 3B abut against each other, the upper wing plate 30 is in line contact or surface contact in the left-right direction. The upper wing plate contact surface 304 is provided at the upper wing plate front end portion 300. Therefore, when the heads (38) of the pair of

sliders

3A and 3B come into contact with each other, not only the tip portions of the upper wing plate 30 come into contact with each other but also with the upper wing plate contact surface 304 of the first slider 3A. The upper wing plate contact surface 304 of the second slider 3B makes line contact or surface contact in the left-right direction, so that the range in which the upper wing plate 30 of the pair of

sliders

3A, 3B contacts each other in the left-right direction is widened. Therefore, when the slide fastener 1 is closed in a curved state in which the slide fastener chain 2 is bent in the vertical direction, a gap generated between the pair of

sliders

3A and 3B can be further reduced, so that the stop of the slide fastener 1 is stopped. It is possible to improve the water solubility and give the user a sense of security.

Further, according to the slide fastener 1 according to one embodiment of the present invention, the pair of

sliders

3A, 3B is formed in a vertical direction of the slide fastener chain 2 including a portion where the heads 38 of the pair of

sliders

3A, 3B abut. When the arrangement state with respect to changes, the upper wing plate contact surfaces 304 follow the change in the arrangement state while maintaining the state of contact with each other. Therefore, when the heads 38 of the pair of

sliders

3A and 3B come into contact with each other, the upper blade contact surface 304 of the first slider 3A and the upper blade contact surface 304 of the second slider 3B are in contact with each other. Therefore, even if the arrangement state of the slide fastener chain 2 including the contacted portion in the vertical direction changes (for example, the slide fastener chain 2 is bent in the vertical direction from a linear state in which the slide fastener chain 2 is not bent in the vertical direction). Even if the slide fastener chain 2 changes from a curved state in which the slide fastener chain 2 is bent to a linear state in which the slide fastener chain 2 is not bent in the vertical direction), or a pair of sliders 3A, The state where the upper wing plates of 3B are in contact with each other is maintained. Therefore, even when the arrangement of the slide fastener chain 2 in the vertical direction changes with the slide fastener 1 closed, the gap generated between the pair of

sliders

3A and 3B can be reliably reduced. In addition, the water stoppage of the slide fastener 1 can be improved, and a sense of security can be given to the user.

In addition, according to the slide fastener 1 according to the embodiment of the present invention, the upper wing plate contact surface 304 is visible from above the pair of

sliders

3A and 3B, and both ends of the upper wing plate 30 in the left-right direction. Are continuously disposed between the upper wing plate left end portion 302 and the upper wing plate right end portion 303. Therefore, when the heads (38) of the pair of

sliders

3A and 3B come into contact with each other, not only the tip portions of the upper wing plate 30 come into contact with each other but also with the upper wing plate contact surface 304 of the first slider 3A. , The upper wing plate contact surface 304 of the second slider 3B continuously contacts between the upper wing plate left end portion 302 and the upper wing plate right end portion 303, and the upper wing plate that is in continuous contact therewith. The contact surface 304 is visible from above the pair of

sliders

3A, 3B. Therefore, when the slide fastener 1 is closed in a state where the slide fastener chain 2 is curved in the vertical direction, a pair of sliders 3A, Since there is no gap between the 3Bs and the state where no gap is formed is visually recognized by the user from above the pair of

sliders

3A and 3B, the water stoppage of the slide fastener 1 is improved and the user is safe. Can give a feeling.

Further, according to the slide fastener 1 according to one embodiment of the present invention, the inclination θ1 of the line L1 with respect to the vertical direction is set according to the curvature when the slide fastener chain 2 is arranged in a curved state in the vertical direction. Is done. Therefore, the arrangement relationship in the approaching direction and the separating direction between the upper blade front end 300 and the lower blade front end 310 is determined according to the curved state of the slide fastener chain 2, so that the pair of

sliders

3A and 3B When the lower blade front end 310 of the first slider 3A and the lower blade front end 310 of the second slider 3B come into contact with each other, the upper blade of the first slider 3A comes into contact. The front end portion 300 comes into contact with the upper blade front end portion 300 of the second slider 3B. Therefore, when the slide fastener 1 is closed in a curved state in which the slide fastener chain 2 is bent in the vertical direction, a gap generated between the pair of

sliders

3A and 3B is reliably formed according to the curved state of the slide fastener chain 2. Since it can be reduced, it is possible to improve the water stopping performance of the slide fastener 1 and to give the user a sense of security.

Further, according to the slide fastener 1 according to the embodiment of the present invention, the upper blade rear end 301 which is the end of the upper blade 30 on the separation direction is the end of the lower blade 31 on the separation direction. The lower wing plate rear end 311 is disposed on the side in the separation direction. Therefore, when the slide fastener chain 2 is arranged in a curved state that is curved in the vertical direction, the length D2 of the approach direction and the separation direction of the lower blade 31 located inside the curve of the slide fastener chain 2 is determined by the curve. It is shorter than the length D1 in the approach direction and the separation direction of the upper blade 30 located on the outside. Therefore, when the

sliders

3A and 3B slide along the slide fastener chain 2 arranged in a vertically curved state, the sliding resistance of the

sliders

3A and 3B can be reduced. 1 can be improved in operability.

Further, according to the slide fastener 1 according to one embodiment of the present invention, the upper wing plate left end portion 302 and the upper wing plate right end portion 303, which are both left and right ends of the upper wing plate 30, are connected to the left and right sides of the lower wing plate 31. The left and right lower ends 312 and 313 of the lower wing plate, which are both ends in the direction, are disposed on the left and right sides, respectively. Therefore, when the slide fastener chain 2 is arranged in a curved state that is curved in the vertical direction, the width W2 in the left-right direction of the lower blade 31 located inside the curve of the slide fastener chain 2 is located outside the curve. The width is smaller than the width W1 of the upper wing plate 30 in the left-right direction. Therefore, when the

sliders

3A and 3B can be reduced. 1 can improve the operability.

Further, according to the slide fastener 1 according to one embodiment of the present invention, the length D1 of the approach direction and the separation direction of the upper blade 30 is longer than the length D2 of the approach direction and the separation direction of the lower blade 31. The width W1 of the upper blade 30 in the left-right direction is larger than the width W2 of the lower blade 31 in the left-right direction. Therefore, when the slide fastener chain 2 is arranged in a curved state that is curved in the vertical direction, the length D2 of the approach direction and the separation direction of the lower blade 31 located inside the curve of the slide fastener chain 2 is determined by the curve. The width W2 in the left-right direction of the lower blade 31 located on the inside of the curve of the slide fastener chain 2 is shorter than the length D1 in the approach direction and the separation direction of the upper blade 30 located on the outside. It becomes smaller than the width W1 of the wing plate 30 in the left-right direction. Therefore, when the

sliders

3A and 3B can be reduced. 1 can improve the operability.

(Other embodiments)
In the above embodiment, referring to FIG. 7, front end surface 320 of guide column 32 is disposed on line L1 connecting upper blade front end 300 and lower blade front end 310 or on the side in the direction away from line L1. However, the front end face 320 of the guide post 32 may have any shape as long as it is disposed on the line L1 or on the side away from the line L1 in the direction away from the line L1.

FIGS. 8A and 8B show a first slider 3A (second slider 3B) according to another embodiment of the present invention, wherein FIG. 8A shows a first modification of the guide column 32, and FIG. It is a right view which shows the 2nd modification. In the first modification, as shown in FIG. 8A, the front end surface 320 of the guide column 32 is substantially linear in the up-down direction, and is disposed on the separation side from the line L1. In the second modified example, as shown in FIG. 8B, the front end surface 320 of the guide column 32 has a bent line shape and is arranged on the side away from the line L1. Note that the front end surface 320 of the guide column 32 may have all the parts disposed on the line L1 or may have some parts disposed on the line L1. Further, the front end surface 320 of the guide column 32 may be arranged in a curved shape, for example, may be a curve bulging in the approaching direction side or a curve bulging in the separating direction side.

In the above-described embodiment, the upper blade contact surface 304 has been described as extending substantially in a straight line parallel to the left-right direction with reference to FIGS. 2A and 5A. The upper wing plate contact surface 304 may be a line contact or a surface contact in the left-right direction. It may be extended in a zigzag or zigzag shape.

In the above embodiment, referring to FIG. 2 (b), when slide fastener 1 is closed in the case where slide fastener chain 2 is arranged in a curved state, upper wing plate contact provided in first slider 3A is provided. The surface 304 and the upper blade contact surface 304 of the second slider 3B are in contact with each other, and the lower blade contact surface 314 of the first slider 3A and the lower blade contact surface of the second slider 3B. Although the first slider 3A and the upper blade contact surface 304 of the second slider 3B only contact the upper blade contact surface 304 provided in the first slider 3A, the first The lower blade contact surface 314 of the slider 3A may not be in contact with the lower blade contact surface 314 of the second slider 3B.

In the above embodiment, the slide fastener 1 has been described as a hidden fastener, but the slide fastener 1 may be a normal type slide fastener in which the

fastener element rows

22A and 22B are not hidden when the slide fastener 1 is closed. .

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be appropriately changed without departing from the technical idea of the present invention.

1 ... Slide fastener,
2 ... Slide fastener chain,
3A: first slider, 3B: second slider,
20A, 20B ... fastener tape,
21A, 21B ... edge,
22A, 22B ... fastener element row,
23A ... first stopper, 23B ... second stopper,
30 ... upper wing plate, 31 ... lower wing plate, 32 ... guide column,
33: Pull attaching part, 34: Pull,
35 ... left wall, 36 ... right wall,
37 ... element passage, 38 ... head,
220 ... fastener element,
300 ... front end of upper wing plate, 301 ... rear end of upper wing plate,
302: left end of upper wing plate; 303: right end of upper wing plate
304 ... upper wing plate contact surface,
310: front end of lower wing plate, 311: rear end of lower wing plate,
312: Left end of lower wing plate, 313: Right end of lower wing plate,
314... Lower wing plate contact surface,
320: front end surface, 370: shoulder opening, 371: rear opening

Claims

A pair of fastener tapes (20A, 20B) arranged to face each other in the left-right direction, and a fastener element row (22A, 20A) fixed to the edges (21A, 21B) of the pair of fastener tapes (20A, 20B). 22B), and a slide fastener chain (2) having a head (38) slidably attached to the slide fastener chain (2), and a head (38) arranged facing the fastener element row (22A, 22B). A slide fastener (1) including a pair of sliders (3A, 3B),
Each of the pair of sliders (3A, 3B)
An upper wing plate (30) and a lower wing plate (31) that are arranged to face each other in the vertical direction with the fastener element rows (22A, 22B) interposed therebetween;
A guide column (32) connecting the upper wing plate (30) and the lower wing plate (31);
When the direction in which the pair of sliders (3A, 3B) approach and separate from each other is a direction orthogonal to the left-right direction and the up-down direction, the approach direction and the separation direction,
An upper wing plate front end portion (300) which is the end portion on the approach direction side of the upper wing plate (30) is a lower wing plate front end portion (the end portion on the approach direction side of the lower wing plate (31)). 310) is disposed on the side closer to the approach direction than
The guide column (32) is disposed on a line (L1) connecting the front end portion (300) of the upper blade and the front end portion (310) of the lower blade or on the side in the direction away from the line (L1). ,
A slide fastener (1), characterized in that:
When the heads (38) of the pair of sliders (3A, 3B) come into contact with each other, the upper wing plate (30) forms an upper wing plate contact surface (304) that makes line contact or surface contact in the left-right direction. For the upper wing plate front end (300);
The slide fastener (1) according to claim 1, characterized in that:
The arrangement of the pair of sliders (3A, 3B) in the vertical direction of the slide fastener chain (2) including a portion where the heads (38) of the pair of sliders (3A, 3B) abut each other changes. And following the change in the arrangement state while maintaining the state in which the upper wing plate contact surfaces (304) are in contact with each other,
The slide fastener (1) according to claim 2, characterized in that:
The upper wing plate contact surface (304) is visible from above the pair of sliders (3A, 3B), and is the left end of the upper wing plate (30), which is both ends in the left-right direction. (302) and the upper wing plate right end (303) are continuously disposed.
The slide fastener (1) according to claim 2 or claim 3, characterized in that:
An inclination (θ1) of the line (L1) with respect to the vertical direction is set according to a curvature when the slide fastener chain (2) is arranged in a curved state curved in the vertical direction.
The slide fastener (1) according to any one of claims 1 to 4, characterized in that:
An upper wing plate rear end (301) which is an end of the upper wing plate (30) on the separation direction side is a lower wing plate rear end which is an end of the lower wing plate (31) on the separation direction side. Part (311), disposed on the side in the separation direction.
The slide fastener (1) according to any one of claims 1 to 5, characterized in that:
The left and right ends (302) and the right end (303) of the upper wing plate (30) in the left and right direction are the both ends of the lower wing plate (31) in the left and right direction. It is arranged on the left and right sides of a certain lower blade left end (312) and lower blade right end (313), respectively.
The slide fastener (1) according to any one of claims 1 to 6, characterized in that:
The length (D1) of the upper wing plate (30) in the approach direction and the separation direction is longer than the length (D2) of the lower wing plate (31) in the approach direction and the separation direction. The lateral width (W1) of the wing plate (30) is wider than the lateral width (W2) of the lower wing plate (31).
The slide fastener (1) according to any one of claims 1 to 7, characterized in that:
A pair of fastener tapes (20A, 20B) arranged to face each other in the left-right direction, and a fastener element row (22A, 20A) fixed to the edges (21A, 21B) of the pair of fastener tapes (20A, 20B). 22B) a pair of sliders (3A, 3B) for a slide fastener (1) slidably attached to a slide fastener chain (2) comprising:
The pair of sliders (3A, 3B) are arranged with their heads (38) facing each other along the fastener element rows (22A, 22B),
Each of the pair of sliders (3A, 3B)
An upper wing plate (30) and a lower wing plate (31) that are arranged vertically opposite to each other with the fastener element rows (22A, 22B) interposed therebetween;
A guide column (32) connecting the upper wing plate (30) and the lower wing plate (31);
When directions in which the pair of sliders (3A, 3B) approach and separate from each other in a direction orthogonal to the left-right direction and the up-down direction are an approach direction and a separation direction,
An upper wing plate front end portion (300) which is the end portion on the approach direction side of the upper wing plate (30) is a lower wing plate front end portion (the end portion on the approach direction side of the lower wing plate (31)). 310) is disposed on the side closer to the approach direction than
The guide column (32) is disposed on a line (L1) connecting the front end portion (300) of the upper blade and the front end portion (310) of the lower blade or on the side in the direction away from the line (L1). ,
A pair of sliders (3A, 3B).