WO2023170888A1

WO2023170888A1 - Slider and slide fastener comprising same

Info

Publication number: WO2023170888A1
Application number: PCT/JP2022/010711
Authority: WO
Inventors: 孝幸犬飼
Original assignee: Ykk株式会社
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2023-09-14

Abstract

Set on the left and/or right side of a connecting column (13) of a slider (5) are: a first plane (PL1) that includes a flange inner wall surface (11p1, 11q1, 12p1, 12q1); a second plane (PL2) that is parallel to the first plane (PL1) and contacts the connecting column (13); and a third plane (PL3) that includes a wall surface (21p, 21q, 23p, 23q) of a protruding part (20). At this time, (i) the second plane (PL2) intersects the third plane (PL3) at a position separated rearward from the wall surface (21p, 21q, 23p, 23q) of the protruding part (20), and (ii) a recessed part (9) is provided to the front edge (11e, 12e) of an upper blade (11) or a lower blade (12) at a position closer to the second plane (PL2) than the first plane (PL1). The recessed part (9) is at least partially defined by a first inclined surface (91) that descends rearward further away from the first plane (PL1).

Description

Sliders and slide fasteners including sliders

The present disclosure relates to a slider and a slide fastener including the slider.

Patent Document 1 discloses a slider used to open and close a resin element consisting of a base, a neck, and a head (see FIG. 17 of the present application). Patent Document 2 discloses a slider for preventing dough from getting caught.

US Design Patent Invention No. 510298 International Publication No. 2021/171518

In some cases, the slider is provided with a protrusion that protrudes further forward than the upper wing plate and the lower wing plate at the center position in the width direction of the slider (for example, see Patent Document 1). With a slider provided with such a protrusion, it has been recognized that it is difficult to prevent the fabric from getting caught by the structure of the slider itself.

A slider according to one aspect of the present disclosure includes an upper wing plate, a lower wing plate, a connecting column that connects the upper wing plate and the lower wing plate, and a handle attachment portion to which at least one handle can be attached. At least one of the upper wing plate and the lower wing plate has left and right flange portions. The left and right flange portions have inner wall surfaces of the left and right flanges that gradually approach each other as they extend rearward. The slider is a protrusion that includes a portion that protrudes forward from at least one of the upper wing plate, the lower wing plate, and the connecting column, and has left and right wall surfaces that define a width larger than the maximum width of the connecting column. It further has. On at least one side of the left and right sides of the connecting column, a first plane including the inner wall surface of the flange, a second plane parallel to the first plane and in contact with the connecting column, and a third plane including the wall surface of the protrusion. Set the plane. At this time, (i) the second plane intersects the third plane at a position farther rearward from the wall surface of the protrusion, and (ii) the leading edge of the upper wing plate or the lower wing plate has a lower plane than the first plane. A recess is provided at a position close to the two planes, and the recess is at least partially defined by a first inclined surface that descends rearward as the distance from the first plane increases.

In some embodiments, the protrusion includes at least one of an upper protrusion protruding forward from the upper wing plate and a lower protrusion protruding forward from the lower wing plate, and at least one of the upper protrusion and the lower protrusion One side has left and right walls.

In some embodiments, the protrusion includes both an upper protrusion and a lower protrusion and an intermediate protrusion protruding forwardly from the connecting post between the upper protrusion and the lower protrusion, the intermediate protrusion comprising: , having left and right walls defining a width less than the width of the protrusion.

In some embodiments, the leading edge of the upper wing or the lower wing is shaped to have a forwardmost position in the range between the first inclined surface and the first plane, and the slider for opening and closing the slide fastener is configured to have a forward-most position. When the fourth plane perpendicular to the moving direction of the recess is set at the frontmost position, the recess is defined by the first inclined surface and the wall surface of the protrusion; or the first inclined surface, the wall surface of the protrusion, and the first inclined surface. defined by an intermediate surface between the surface and the wall surface; or defined by a first sloped surface and at least a portion of a second sloped surface that slopes forward as it extends from the first sloped surface toward the wall surface of the protrusion; be done.

In some embodiments, the angle between the second plane and the third plane is in the range of 17.5° to 40°.

In some embodiments, the length of the first inclined surface is shorter than the length of the leading edge between the first inclined surface and the first plane in the width direction of the slider.

In some embodiments, the handle attachment part is provided movably with respect to the slider body including at least the upper wing plate, the lower wing plate, the connecting column, and the protrusion, and the handle attachment part moves as the handle is operated. The attitude of a locking member that is displaceable relative to the slider body and pivotally attached to the slider body is controllable. The protrusion may be configured to at least partially accommodate the locking member. The protrusion may have a groove that is open at least at the front.

A slide fastener according to another aspect of the present disclosure includes a pair of left and right fastener stringers with coiled elements attached to the side edges of a fastener tape, and a coiled element of the pair of left and right fastener stringers, which is made of any of the sliders described above. includes a slider movable to engage and disengage.

Even in the case of a slider provided with a protrusion, the structure of the slider itself can prevent the fabric from getting caught.

FIG. 2 is a schematic top view of a slide fastener according to one aspect of the present disclosure. FIG. 2 is a schematic left side view of the slider shown in FIG. 1. FIG. FIG. 2 is a schematic front view of the slider shown in FIG. 1; FIG. 2 is a schematic rear view of the slider shown in FIG. 1; FIG. 2 is a schematic cross-sectional view of the slider shown in FIG. 1, in which the slider is in a locked state where its movement is prevented. FIG. 2 is a schematic cross-sectional view of the slider shown in FIG. 1, in which the handle is pulled rearward and the slider is in an unlocked state where its movement is allowed. FIG. 2 is a schematic cross-sectional view of the slider shown in FIG. 1, in which the handle is pulled forward and the slider is in an unlocked state where its movement is permitted. 2 is a schematic cross-sectional view orthogonal to the vertical direction of the slider shown in FIG. 1. FIG. FIG. 7 is a schematic cross-sectional view orthogonal to the vertical direction of a slider according to a comparative example. FIG. 7 is a schematic cross-sectional view orthogonal to the up-down direction of a slider according to another example of the present disclosure. FIG. 7 is a schematic cross-sectional view orthogonal to the up-down direction of a slider according to still another example of the present disclosure. FIG. 7 is a schematic cross-sectional view of a slider according to another embodiment of the present disclosure, in which the slider is in a locked state in which movement thereof is prevented. FIG. 7 is a schematic cross-sectional view of a slider according to another embodiment of the present disclosure, in which the slider is in an unlocked state where its movement is released. 14 is a schematic cross-sectional view orthogonal to the vertical direction of the slider shown in FIGS. 12 and 13. FIG. FIG. 7 is a schematic cross-sectional view orthogonal to the up-down direction of a slider according to still another embodiment of the present disclosure. FIG. 7 is a schematic perspective view of a slider according to yet another embodiment of the present disclosure. 2 is a schematic cross-sectional view orthogonal to the vertical direction of the slider illustrated in Patent Document 1. FIG.

Hereinafter, various embodiments and features will be described with reference to the drawings. Those skilled in the art can combine each embodiment and/or each feature without needing excessive explanation, and can also understand the synergistic effect of this combination. Duplicate explanations between embodiments will be omitted in principle. The reference drawings are primarily for the purpose of describing the invention and are simplified for ease of drawing. Each feature is understood as a universal feature that is not only effective for the slider disclosed in this application, but also applicable to various other sliders not disclosed in this specification.

In this specification, the moving direction of the slider 5 that opens and closes the slide fastener 1 is the front-rear direction (see double-headed arrow FB in FIG. 1). The width direction of the slider orthogonal to the front-rear direction is defined as the left-right direction (see double-headed arrow LR in FIG. 1), and the thickness direction of the slider 5 orthogonal to the front-rear direction is defined as the up-down direction (see double-headed arrow UD in FIG. 2). Note that the up-down direction is orthogonal to both the front-back direction and the left-right direction. The vertical direction does not necessarily mean the vertical direction (direction of gravity). For example, when the longitudinal direction of the slide fastener 1 is arranged in the vertical direction, the vertical direction regarding the slider 5 is included in the horizontal direction (perpendicular to the vertical direction). The directions referred to herein are independent of the vertical direction.

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

right fastener stringers

2m, 2n, each having coiled

elements

4m, 4n attached to the side edges of

fastener tapes

3m, 3n, and a pair of left and

right fastener stringers

2m, 2n. It has a slider 5 that is movable to engage and disengage the coiled

elements

4m and 4n. The

fastener tapes

3m and 3n are highly flexible elongated woven fabrics, knitted fabrics, or mixed fabrics thereof, and have a thickness defined by a pair of upper and lower tape surfaces. The coiled

elements

4m, 4n are made of monofilament spirally extending in the same direction as the longitudinal direction of the

fastener tapes

3m, 3n, and engagement heads are formed at positions outside the tape planes of the

fastener tapes

3m, 3n. The engaging head is shaped wider than the rest of the monofilament. The

coiled elements

4m, 4n are typically sewn to the

zipper tapes

3m, 3n with sewing thread, but a form in which they are incorporated into the structure (for example, a woven structure or a knitted structure) of the

fastener tapes

3m, 3n is also envisaged. be done.

As the slider 5 moves forward, the left and right

coiled elements

4m, 4n (especially their engaging heads) engage with each other, and as the slider 5 moves backward, the left and right

coiled elements

4m, 4n (especially their engagement heads) engage with each other. (joint heads) are disengaged from each other. Assuming that there is a rising part of the fabric on which the slide fastener 1 is sewn or other fabric at the position indicated by the dotted circle DC in FIG. part enters into the slider 5. As a result, so-called biting of the fabric by the slider 5 occurs, and the back and forth movement of the slider 5 becomes difficult due to the biting of the fabric. Specifically, it takes time and effort to move the slider 5 while restraining the bitten dough to release the biting. According to the slider 5 according to the present disclosure, as will become clear from the description below, even though the protrusion is provided, such biting of the dough can be suppressed by the structure of the slider itself. .

As shown in FIGS. 2 to 4, the slider 5 includes an upper wing plate 11 having left and

right flange parts

11m and 11n, a lower wing plate 12 having left and

right flange parts

12m and 12n, an upper wing plate 11 and a lower wing plate. 12, a central structure 6 located at the widthwise center of the slider 5, a locking member 7 (see FIGS. 5 to 7), an elastic member 8 (see FIGS. 5 to 7), and a pull attachment part 40 to which at least one pull 49 can be attached. The slider 5 is typically made of metal, but is not limited to this and may be made of plastic. Some of the constituent parts of the slider 5 may be made of metal, and other constituent parts may be made of resin.

The slider 5 has a Y-shaped element passage 55 that is bifurcated by a connecting column 13 between the upper wing plate 11 and the lower wing plate 12 (see FIGS. 3, 4, and 8). Specifically, as shown in FIG. 8, the element passage 55 is formed after the left and

right passages

55m, 55n located on both the left and right sides of the connecting column 13 and the left and

right passages

55m, 55n merge at the rear position of the connecting column 13. It has a passage 55j. A left front opening 5m is formed at the front end of the left passage 55m, and a right front opening 5n is formed at the front end of the right passage 55n. One rear opening 5j is formed at the rear end of the rear passage 55j. Note that the front opening 5m is defined by the upper wing plate 11, the lower wing plate 12, the connecting column 13, and the

flange portions

11m and 12m. The front opening 5n is defined by the upper wing plate 11, the lower wing plate 12, the connecting column 13, and the

flange portions

11n and 12n. The rear opening 5j is defined by the upper wing plate 11, the lower wing plate 12, and left and

right flange portions

11m, 12m, 11n, and 12n. As is clear to those skilled in the art, the engagement and disengagement positions of the left and right

coiled elements

4m and 4n are set between the connecting column 13 and the rear opening 5j.

The

flange portions

11m and 11n have flange inner wall surfaces 11p and 11q, respectively (see FIGS. 3 and 8). Similarly, the

flange portions

12m and 12n have flange inner wall surfaces 12p and 12q, respectively. The flange inner wall surfaces 11p and 12p restrict the movement path of the coiled element 4m from the left side. The flange inner wall surfaces 11q and 12q restrict the movement path of the coiled element 4n from the right side. The flange

inner wall surfaces

11p, 11q have regions (e.g., flat inclined surfaces 11p1, 11q1) that approach each other as they extend rearward (e.g., tapered) and regions (e.g., flat inclined surfaces 11p1, 11q1) that extend rearward (e.g., (for example, flat opposing surfaces 11p2 and 11q2).

As can be understood from FIGS. 2 to 7, in the slider 5, the upper wing plate 11, the lower wing plate 12, the connecting column 13, and the central structure 6 constitute a slider body, and the locking member 7 and The handle attachment part 40 is attached. In short, a pull attachment part 40 is attached to the central structure 6, a U-shaped movement path 46 for the pull handle 49 is formed on the slider 5, and pull handles are provided on both sides of the upper wing plate 11 and the lower wing plate 12. 49 can be positioned. Note that the movement paths 46 are provided on both the left and right sides, and the left and right mounting portions 49a of the handle 49 are movable individually. The handle attachment part 40 can also be attached to the central structure 6 so as to be movable along the front-rear direction (typically within a predetermined range); in this case, the displacement of the handle attachment part 40 with respect to the central structure 6 can be adjusted. The posture of the locking member 7 can be controlled based on this. It is also possible to form a slider body with the upper wing plate 11, lower wing plate 12, and connecting column 13, and to attach the central structure 6 thereto. The slider body can also be defined separately in this way.

The handle attachment part 40 is a substantially U-shaped member located at the left and right center of the slider 5, and includes an upper part 41 located on the same side as the upper wing plate 11, a lower part 42 located on the same side as the lower wing plate 12, and a front part 43 connecting the upper part 41 and the lower part 42. The upper surface of the upper portion 41, the curved front surface of the front portion 43, and the lower surface of the lower portion 42 continuously define the U-shaped outer shape of the handle attachment portion 40. The upper part 41 and the lower part 42 each extend in the front-back direction. A pair of left and

right walls

41a and 41b are provided at the rear end of the upper portion 41 and extend downward to define a rear stopping position of the attachment portion 49a of the handle 49. Similarly, a pair of left and

right walls

42a and 42b are provided at the rear end of the lower portion 42 and extend upward to define a rear stopping position of the attachment portion 49a of the handle 49. A recess or hole 41j is formed in the upper portion 41 (see FIGS. 5 to 7), thereby controlling the posture of the locking member 7. Similarly, the front portion 43 is formed with an insertion portion 44 that is inserted into the groove 24 of the protrusion 20 (see FIGS. 5 to 7), which will be described later, so that the posture of the locking member 7 is controlled.

The central structure 6 has a support portion 30 that supports the handle attachment portion 40. The support part 30 includes an upper support part 31 that supports the upper part 41 of the handle attachment part 40, a lower support part 32 that supports the lower part 42 of the handle attachment part 40, and a front support part that supports the front part 43 of the handle attachment part 40. It has 33. The upper support portion 31 extends longer than the upper wing plate 11 in the front-rear direction, and its front end is located at a position forward of the leading edge 11e of the upper wing plate 11 (a position ahead of the dotted line DL1 in FIG. 2). . Similarly, the lower support portion 32 extends longer in the longitudinal direction than the lower wing plate 12, and its front end is located at a position forward of the leading edge 12e of the lower wing plate 12 (a position forward of the dotted line DL1 in FIG. 2). be positioned. The front support part 33 extends along the up-down direction so as to connect the front ends of the upper support part 31 and the lower support part 32.

The specific manner of engagement between the pull attachment portion 40 and the support portion 30 may vary. For example, the upper support part 31 and the upper part 41 each engage, and/or the lower support part 32 and the lower part 42 each engage, and/or the front support part 33 and the front part 43, Each engages. In the illustrated example, the upper support part 31 has a convex part for fitting with the upper part 41 of the handle attachment part 40, and the upper part 41 of the handle attachment part 40 is shaped to have a concave part. The arrangement of the recesses can also be reversed. The upper support portion 31 includes an (optional) guide rail base portion 31a, a guide rail narrow portion 31b, and a guide rail wide portion 31c as the above-mentioned convex portions. The upper part 41 of the handle attachment part 40 has left and

right walls

41a, 41b and a top plate 41c connecting these, as the above-mentioned recess. The lower support portion 32 includes a narrow rail portion 32a and a wide rail portion 32b as the above-mentioned convex portions. The front support portion 33 does not have a portion such as a wide rail portion that protrudes in the left-right direction. This allows the pull attachment part 40 to move back and forth with respect to the support part 30. Although not shown, the movement range of the pull attachment part 40 relative to the support part 30 in the front-rear direction can be regulated by a restriction structure such as a groove extending in the front-rear direction and a protrusion inserted into the groove.

The central structure 6 has a protruding part 20 in addition to the above-mentioned support part 30 (note that a form in which the supporting part 30 is omitted in the central structure 6 and only the protruding part 20 is provided is also envisioned). The protruding portion 20 is located forward of the forwardmost position (dotted line DL1 in FIG. 2) of each of the

leading edges

11e, 12e of the upper wing plate 11 and the lower wing plate 12. When the central structure 6 is provided with the front support part 33 of the support part 30, the protrusion part 20 is located between the upper wing plate 11 and the front support part 33, between the lower wing plate 12 and the front support part 33, and/or in the connection. It can be provided between the pillar 13 and the front support part 33. More specifically, the protrusions 20 include an upper protrusion 21 protruding forward from the upper wing plate 11, a lower protrusion 22 protruding forward from the lower wing plate 12, and an intermediate protrusion protruding forward from the connecting column 13. It has any or all of 23. The upper protrusion 21, the lower protrusion 22, and the intermediate protrusion 23 are each provided on the front side of the forwardmost position (dotted line DL1 in FIG. 2) of each front end of the upper wing plate 11 and the lower wing plate 12. The intermediate protrusion 23 has left and right wall surfaces 23p and 23q that define a width smaller than a predetermined width W20 of the protrusion 20, which will be described later. The left and right wall surfaces 23p and 23q each slightly approach the center line CL of the slider 5 (see FIG. 8) as they extend forward.

Although this is not necessarily the case, it is possible to assign one or more roles to the protrusion 20 (of course, it is also possible to assign no special or unique function). In some cases, the protrusion 20 is assigned the task of at least partially accommodating the locking member 7 and is shaped accordingly. As can be seen from FIGS. 5 to 8 (particularly FIG. 8), a groove 24 extending from the front surface of the protrusion 20 toward the rear end 13j of the connecting column 13 is formed, and the locking member 7 is at least partially inserted into this groove 24. be accommodated. A left wall 23m and a right wall 23n defining a groove 24 in the protrusion 20 and the connecting post 13 may be provided. The groove 24 may be located in the center of the left and right sides. Groove 24 may be open at the front, top, and bottom. The length L24 of the groove 24 in the front-rear direction can be changed depending on the size of the locking member 7 and the like. A concave accommodating portion 25 for accommodating the elastic member 8 may also be formed in the protruding portion 20 and the connecting column 13 .

The posture control of the locking member 7 is as shown in FIGS. 5 to 7. A lock member 7 is provided in the slider 5 so as to be pivotable about a pivot axis AX located at a predetermined position. The lock member 7 has an operated portion 71 and an arm 72, and the arm 72 is provided with a lock claw 73. A portion of the operated portion 71 is inserted into a groove 24 of the protrusion 20, which will be described later. The arm 72 is arranged between the upper wing plate 11 and the upper part 41 of the handle attachment part 40. The lock pawl 73 has a downwardly tapered shape, and can move forward and backward into the element passage 55 through a pawl hole formed in the upper wing plate 11 depending on the posture of the lock member 7.

In FIG. 5, the slider 5 is in a locked state, the operated portion 71 of the lock member 7 is urged forward by the elastic member 8, and the lock claw 73 has advanced into the element passage 55. In FIG. 6, the slider 5 is in the unlocked state, the handle 49 is pulled rearward to move the slider 5 backward, and the operated part 71 is moved (by the urging force of the elastic member 8) by the insertion part 44 of the handle attachment part 40. The locking member 7 is pivoted in the direction in which the locking pawl 73 is retracted from the element passage 55. In FIG. 7 as well, the slider 5 is in the unlocked state, the handle 49 is pulled forward in order for the slider 5 to move forward, and the operated part 71 is pressed by the wall surface of the recess or hole 41j of the upper part 41 of the handle attachment part 40. The locking member 7 is pivoted in a direction in which the protrusion 74 is pushed backward (against the biasing force of the elastic member 8) and the locking pawl 73 is retracted from the element passage 55. Note that the spring illustrated as the elastic member 8 is merely an example, and other means may be employed. The shape of the locking member 7 can also be changed as appropriate.

In this embodiment, when setting the first plane PL1, second plane PL2, and third plane PL3 as shown in FIG. intersects the third plane PL3 at a distant position, and (ii) the

leading edge

11e, 12e of the upper wing plate 11 or the lower wing plate 12 has a recess 9 at a position closer to the second plane PL2 than the first plane PL1. The recessed portion 9 is at least partially defined by a first inclined surface 91 that descends rearward with increasing distance from the first plane PL1. In this case, regardless of the presence of the protrusion 20, the structure of the slider 5 itself suppresses the dough from getting caught. Specifically, the concave portion 9 provides an escape space for the portion of the fabric that is about to enter the slider 5 along with the

coiled elements

4m, 4n, and the biting of the fabric is suppressed. Note that (i) above means that "the second plane PL2 and the third plane PL3 do not intersect in front of the

leading edges

11e and 12e of the upper wing plate 11 or the lower wing plate 12 (one diverges from the other)". (continuation), and a gap W9 is formed between the two.''

In FIG. 8, the first plane PL1 is a plane including the inclined surface 11p1 of the flange inner wall surface 11p. The second plane PL2 is parallel to the first plane PL1 and is in contact with the connecting column 13. In other words, the second plane PL2 is set at a position where the first plane PL1 is moved in parallel toward the connecting column 13 and contacts the connecting column 13. The connecting column 13 may have left and right flat wall surfaces 13p and 13q that approach each other (for example, in a tapered shape) as they extend rearward. In this case, the second plane PL2 becomes a plane including the wall surface 13p. Needless to say, the second plane PL2 does not need to be in surface contact with the connecting column 13, and may be in linear contact within a smaller range, for example. The interval between the first plane PL1 and the second plane PL2 is set corresponding to the element width of the

coiled elements

4m and 4n, and for example, the distance between the first plane PL1 and the second plane PL2 is set to correspond to the element width of the

coiled elements

4m and 4n. )big. In this way, the movement of the

coiled elements

4m, 4n within the slider 5 can be accurately controlled.

The third plane PL3 is a plane that includes the wall surface of the protrusion 20 (here, the wall surface 21p of the upper protrusion 21). The wall surface of the protrusion 20 referred to here is a wall surface that defines a predetermined width W20 of the protrusion 20 in the slider width direction (horizontal direction), and the predetermined width W20 of the protrusion 20 is the maximum width W13 of the connecting column 13. larger than Advantageously, the predetermined width W20 of the protrusion 20 is equal to the maximum width of the protrusion 20. In some cases, the predetermined width W20 of the protrusion 20 is a constant value, and in other cases it is a variable value. Note that the predetermined width W20 of the protrusion 20 is equal to the distance between the third plane PL3 and the plane PL3' (mirror image thereof with respect to the center line CL) in FIG. 8. The maximum width W13 of the connecting column 13 is equal to the distance between the plane PL5 of FIG. 8 and the plane PL5' (mirror image thereof with respect to the center line CL). Plane PL3, plane PL3', plane PL5, and plane PL5' are orthogonal to the slider width direction (left-right direction) and parallel to each other.

The predetermined width W20 of the protrusion 20 may be defined by the left and right wall surfaces 21p and 21q of the upper protrusion 21 and/or the left and right wall surfaces of the lower protrusion 22. The lateral width of the intermediate protrusion 23 may be set to be less than the lateral width of the upper protrusion 21 and the lateral width of the lower protrusion 22 in order to smoothly insert the

coiled elements

4m, 4n into the left and right

front openings

5m, 5n. . In other words, the upper protrusion 21 is wider in the slider width direction (horizontal direction) than the intermediate protrusion 23, and can induce the slider 5 to bite into the fabric. The same applies to the lower protrusion 22.

Although it has been explained with reference to FIG. 8 that the conditions (i) and (ii) above are satisfied with respect to the left side of the connecting column 13, the same explanation applies to the right side of the connecting column 13. That is, the first plane PL1, the second plane PL2, and the third plane PL3 can be set as left and right mirror images of those shown in FIG. 8, and in this case, the above conditions (i) and (ii) are also satisfied. However, the same effect can be obtained. In addition, in FIG. 8, the first plane PL1 is set to the flat inclined surfaces 11p1 and 11q1 of the flange inner wall surfaces 11p and 11q of the upper wing plate 11, but the first plane PL1 is set to the flat inclined surfaces 11p1 and 11q1 of the flange inner wall surfaces 12p and 12q of the lower wing plate 12. The first plane PL1 can be set at . In this case as well, the same effects as described above can be obtained as long as the conditions (i) and (ii) described above are satisfied.

Advantageously, the angle θ1 between the second plane PL2 and the third plane PL3 is within the range of 17.5° to 40°, more preferably within the range of 20° to 35°, and even more preferably 27.5°. It is within the range of 31.5° to 31.5°. Additionally or alternatively, when setting the fourth plane PL4 perpendicular to the movement direction (back and forth direction) of the slider 5 for opening and closing the slide fastener 1, the angle θ2 between the first inclined surface 91 and the fourth plane PL4 is: Any angle greater than 0°, preferably less than 8°. Additionally or alternatively, in the width direction (horizontal direction) of the slider 5, the length of the first inclined surface 91 is the length of the front of the upper wing plate 11 or the lower wing plate 12 between the first inclined surface 91 and the first plane PL1. It is shorter than the length of

edges

11e and 12e. By satisfying one, two, or all of the above conditions, the position and range of the recess 9 can be appropriately set for the purpose of preventing jamming. Note that the leading edge 11e of the upper wing plate 11 may be shaped (for example, curved) so as to have the forwardmost position in the range between the first inclined surface 91 and the first plane PL1. The same applies to the leading edge 12e of the lower wing plate 12.

FIG. 9 shows a slider 5' according to a comparative example in which the maximum longitudinal length of the upper wing plate 11 and the lower wing plate 12 is shorter than that of the slider 5 shown in FIGS. 1 to 8. In this case, although the weight of the slider 5 is reduced, the above-mentioned condition (i) is not satisfied, so the effect of preventing dough from getting caught cannot be sufficiently obtained. Specifically, in the case of the slider 5 shown in FIGS. 1 to 8, one bite was confirmed in 20 closing tests of the slide fastener 1. In contrast, in the case of the slider 5' shown in FIG. 9, 15 bites were confirmed in 20 closing tests of the slide fastener 1 under the same conditions. Although the slider weight may be increased compared to the slider 5', it was confirmed that the slider 5 has the advantage of satisfying both conditions (i) and (ii) above. In the above-mentioned closure test, the dough was raised up to a maximum height of 50 mm within a range of 100 mm in front of the slider 5, the slider 5 was moved forward in this state, and the presence or absence of biting of the dough by the slider 5 was examined.

This will be further explained with reference to FIGS. 8, 10, and 11. As shown in FIG. 8, the leading

edges

11e, 12e of the upper wing plate 11 or the lower wing plate 12 have the forwardmost position (for example, are curved) in the range between the first inclined surface 91 and the first plane PL1. ) shaped. When the fourth plane PL4 perpendicular to the movement direction (back and forth direction) of the slider 5 for opening and closing the slide fastener 1 is set at the forwardmost position of the

front edges

11e and 12e, the recess 9 is located between the first inclined surface 91 and the protrusion. 20 (here, the wall surface 21p of the upper protrusion 21). The end point of the first inclined surface 91 near the center line CL of the slider 5 and the rear end point of the wall surface of the protrusion 20 match.

The recess 9 is not limited to that shown in FIG. 8, but can be shaped and/or positioned as shown in FIGS. 10 and 11. In both cases of FIGS. 10 and 11, the above-mentioned conditions (i) and (ii) are satisfied, and the effect of preventing the slider 5 from biting the dough can be obtained.

As shown in FIG. 10, when setting the fourth plane PL4 in the same manner as described above, the recess 9 includes the first inclined surface 91, the wall surface of the protrusion 20 (here, the wall surface 21p of the upper protrusion 21), and the protrusion 20 (here, the wall surface 21p of the upper protrusion 21) and the first inclined surface 91. The intermediate surface 92 is a flat surface parallel to the left-right direction, but may be an inclined surface inclined at a different angle from the first inclined surface 91. Further, the intermediate surface 92 may include a plurality of inclined surfaces having different angles. With respect to the slider 5 shown in FIG. 10, jamming was confirmed 8 times in 20 closing tests of the slide fastener 1 under the same conditions as the above test. It can be said that the biting of the fabric was suppressed compared to the slider 5' shown in FIG.

As shown in FIG. 11, when setting the fourth plane PL4 in the same manner as described above, the recess 9 extends from the first slope 91 to the wall surface of the protrusion 20 (in this case, the wall surface of the upper protrusion 21). It is defined by at least a portion of a second slope 93 that slopes forward as it extends toward the wall surface 21p). Advantageously, the angle between the fourth plane PL4 and the second inclined surface 93 is larger than the angle between the fourth plane PL4 and the first inclined surface 91. Regarding the slider 5 shown in FIG. 11, one jamming was confirmed in 20 closing tests of the slide fastener 1 under the same conditions as the above test. The chewing of the fabric was suppressed to the same extent as the slider 5 shown in FIG.

In the embodiment illustrated in FIGS. 1 to 11, the handle attachment portion 40 is movable with respect to the slider body including at least the upper wing plate 11, the lower wing plate 12, the connecting column 13, and the protrusion 20 (or the central structure 6). The handle mounting portion 40 is displaceable relative to the slider body as the handle is operated, and the posture of the locking member 7 pivotally attached to the slider body can be controlled. Furthermore, the protrusion 20 is configured to at least partially accommodate the locking member 7. The various features described above are not limited to these forms.

In the case shown in FIGS. 12 and 13, the protrusion 20 is located at the leading edge 11e of the upper wing plate 11 or the forwardmost position and at the leading edge 12e of the lower wing plate 12 or at the forwardmost position (FIG. 12), as described above. (see dotted line DL1 in FIG. 13), but it does not itself accommodate the locking member 7, but is understood as a mere protrusion of the slider 5. As shown in FIG. 14, the above-mentioned conditions (i) and (ii) are satisfied, and the effect of preventing the slider 5 from biting the dough can be obtained, as in the case described with reference to FIG.

In the embodiments shown in FIGS. 12 to 14, the slider 5 has a locking member 7 as in the embodiments shown in FIGS. 1 to 11, but as shown in FIG. 15, the locking member 7 may be omitted. can. Further, as shown in FIG. 15, a predetermined width W20 of the protrusion 20 can be defined by the left and right wall surfaces 23p and 23q of the intermediate protrusion 23. The case shown in FIG. 15 also satisfies the above-mentioned conditions (i) and (ii) as described in connection with FIG. 8, and the effect of preventing the slider 5 from biting the dough can be obtained.

In the embodiments shown in FIGS. 1 to 15, the number of pulls 49 is one, but the number is not limited to this. As shown in FIG. 16, the slider 5 can also have two handles 49. That is, the handle attachment part 40 includes an upper part 41 provided on the upper surface of the upper wing plate 11 and a lower part 42 provided on the lower surface of the lower wing plate 12, and different handles 49 are individually attached to the upper part 41 and the lower part 42. It is attached. Even in this form, by satisfying the above-mentioned conditions (i) and (ii), the effect of preventing the slider 5 from biting the dough can be obtained.

FIG. 17 is a schematic diagram of the slider illustrated in Patent Document 1. As shown in FIG. 17, the slider illustrated in Patent Document 1 is not a coiled element, but a resin element (an element individually attached to the side edge of the tape by injection molding, and includes a base, a neck, and a head. It is designed for arrays with At first glance, the leading edge of the upper wing appears to satisfy condition (ii) above. However, as shown in FIG. 17, the above condition (i) is not satisfied. Therefore, the same jamming prevention effect as the slider 5 disclosed in the present application cannot be obtained.

In light of the above teachings, those skilled in the art can make various modifications to each embodiment. The symbols included in the claims are for reference only and should not be referred to for the purpose of limiting the scope of the claims.

1: Slide fastener 2m: Fastener stringer 2n: Fastener stringer 3m: Fastener tape 3n: Fastener tape 4m: Coiled element 4n: Coiled element 5: Slider 11: Upper wing plate 11e: Front edge 11m: Flange portion 11n: Flange portion 12: Lower wing plate 12e: Front edge 12m: Flange portion 12n: Flange portion 13: Connecting column 20: Projecting portion 21: Upper projecting portion 22: Lower projecting portion 23: Intermediate projecting portion 24: Groove

Claims

An upper wing plate (11), a lower wing plate (12), a connecting column (13) that connects the upper wing plate (11) and the lower wing plate (12), and at least one handle (49) are attachable. A handle attachment part (40) is provided, at least one of the upper wing plate (11) and the lower wing plate (12) has left and right flange parts (11m, 11n, 12m, 12n), and the left and right flanges A slider (5) for a slide fastener having left and right flange inner wall surfaces (11p1, 11q1, 12p1, 12q1) that gradually approach each other as the portions (11m, 11n, 12m, 12n) extend rearward,
A protrusion (20) including a portion (21, 22, 23) protruding forward from at least one of the upper wing plate (11), the lower wing plate (12), and the connecting column (13), further comprising a protrusion (20) having left and right wall surfaces (21p, 21q, 23p, 23q) defining a width (W20) larger than the maximum width (W13) of the connecting column (13);
A first plane (PL1) including the flange inner wall surface (11p1, 11q1, 12p1, 12q1) on at least one side of the left and right sides of the connecting column (13), and a plane parallel to the first plane (PL1). When setting a second plane (PL2) that is in contact with the connecting column (13) and a third plane (PL3) that includes the wall surface (21p, 21q, 23p, 23q) of the protrusion (20). , (i) the second plane (PL2) intersects the third plane (PL3) at a position spaced backward from the wall surface (21p, 21q, 23p, 23q) of the protrusion (20), and ( ii) The leading edge (11e, 12e) of the upper wing plate (11) or the lower wing plate (12) is provided with a recess (9) at a position closer to the second plane (PL2) than to the first plane (PL1). ), and the recess (9) is at least partially defined by a first inclined surface (91) that descends rearward as it moves away from the first plane (PL1).
The protrusion (20) includes at least one of an upper protrusion (21) protruding forward from the upper wing plate (11) and a lower protrusion (22) protruding forward from the lower wing plate (12). The slider according to claim 1, wherein at least one of the upper protrusion (21) and the lower protrusion (22) has the left and right wall surfaces (21p, 21q, 23p, 23q).
The protrusion (20) connects both the upper protrusion (21) and the lower protrusion (22), and the connecting column (13) between the upper protrusion (21) and the lower protrusion (22). ), the intermediate protrusion (23) includes left and right wall surfaces (23p, 23q) that define a width smaller than the width (W20) of the protrusion (20). ) The slider according to claim 2.
The leading edge (11e, 12e) of the upper wing plate (11) or the lower wing plate (12) is in the forwardmost position in the range between the first inclined surface (91) and the first plane (PL1). When setting a fourth plane (PL4) perpendicular to the moving direction of the slider (5) for opening and closing the slide fastener (1) at the forwardmost position,
The recess (9) is
defined by the first inclined surface (91) and the wall surfaces (21p, 21q, 23p, 23q) of the protrusion (20); or defined by a wall surface (21p, 21q, 23p, 23q), and an intermediate surface (92) between the first inclined surface (91) and the wall surface (21p, 21q, 23p, 23q); or a second inclined surface (93) that is inclined forward as it extends from the first inclined surface (91) toward the wall surface (21p, 21q, 23p, 23q) of the protrusion (20); 4. A slider according to any one of claims 1 to 3, defined by at least a part of ).
The slider according to any one of claims 1 to 4, wherein the angle formed by the second plane (PL2) and the third plane (PL3) is within a range of 17.5° to 40°.
In the width direction of the slider (5), the length of the first inclined surface (91) is equal to the front edge (11e, 12e) between the first inclined surface (91) and the first plane (PL1). The slider according to any one of claims 1 to 5, wherein the slider is shorter than the length of the slider.
The handle attachment portion (40) is movably provided with respect to the slider body including at least the upper wing plate (11), the lower wing plate (12), the connecting column (13), and the protruding portion (20). When the handle (49) is operated, the handle attachment portion (40) is displaced relative to the slider body, and the posture of the locking member (7) pivotally attached to the slider body can be controlled. The slider according to any one of claims 1 to 6.
A slider according to claim 7, wherein the protrusion (20) is configured to at least partially accommodate the locking member (7).
The slider according to claim 8, wherein the protrusion (20) has a groove (24) that is open at least at the front.
A pair of left and right fastener stringers (2m, 2n) with coiled elements (4m, 4n) attached to the side edges of the fastener tape (3m, 3n);
The slider (5) according to any one of claims 1 to 9 is moved to engage and disengage the coiled elements (4m, 4n) of the pair of left and right fastener stringers (2m, 2n). Slide fastener with a possible slider (5).