Puller

Abstract

The present invention addresses the problem of providing a slider in which fastener elements are less likely to be ground by a slider body even if a sliding operation is repeated. Provided is a slider in which a pair of upper-side front avoidance sections (25) are disposed at the left and right shoulder opening (18)-side ends of upper wing plates (20, 20a), each upper-side front avoidance section having an inclined surface that gradually increases the distance between the upper-side front avoidance section and a center reference surface (50) toward the shoulder opening (18), and a pair of lower-side front avoidance sections (35) are disposed at the left and right shoulder opening (18)-side ends of lower wing plates (30, 30a), each lower-side front avoidance section having an inclined surface that gradually increases the distance between the upper-side front avoidance section and the center reference surface (50) toward the shoulder opening (18). Each of the lower front avoidance portions has an inclined surface that gradually increases the distance between the lower front avoidance portion and the center reference surface (50) toward the shoulder opening (18), and the depth (54) of the lower front avoidance portion (35) with respect to the center reference surface (50) is smaller than the depth (53) of the upper front avoidance portion (25) with respect to the center reference surface (50).

Description

TECHNICAL FIELD

[0001] The utility model relates to the puller used in zipper. BACKGROUND

[0002] As a zipper, as described in, for example, International Publication No. 2009 / 128136 (Patent Document 1), a zipper in which a plurality of zipper teeth formed of metal are attached to a zipper tape is known. Such a zipper is sometimes referred to as a metal zipper.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT DOCUMENTS

[0005] Patent Document 1: International Publication No. 2009 / 128136 SUMMARY

[0006] In the conventional metal zipper, the puller main body is in contact with the zipper teeth formed of metal and rubs against the zipper teeth when the puller slides. For example, in a case where the puller is pulled in the direction of the back surface of the zipper tape while being subjected to a sliding operation, the puller and the zipper teeth are likely to rub against each other with a strong force.

[0007] Therefore, as the sliding operation of the puller is repeated, the outer surface of the zipper teeth formed of metal is sometimes partially abraded, so that a metal portion on the inner side of the zipper teeth is exposed. As a result, on the outer surface of the zipper teeth, there is a difference in color and texture (metallic feel) between the portion originally formed on the zipper teeth and the portion on the inner side of the outer surface which is abraded and exposed, which leads to a deterioration in the appearance of the zipper teeth and a decrease in the appearance quality of the metal zipper.

[0008] The utility model is completed in view of the above-mentioned conventional problems, and aims to provide a puller which is difficult to be abraded by the puller main body against the zipper teeth even if the sliding operation is repeated.

[0009] In order to achieve the above object, the zipper puller provided by the utility model is a zipper puller with a puller main body, which has: an upper wing plate; a lower wing plate arranged separately from the upper wing plate; a connecting column connecting the front end part of the upper wing plate and the front end part of the lower wing plate; a pair of shoulder openings opened on the left and right sides of the connecting column; a rear opening opened on the rear end part of the puller main body; and a chain guide path formed between the upper wing plate and the lower wing plate and connecting the shoulder openings and the rear opening, wherein the upper wing plate is provided with a pair of upper front avoidance parts arranged on the inner surface part of the upper wing plate opposite to the lower wing plate and arranged at the end parts of the left and right shoulder openings, each upper front avoidance part has an inclined surface gradually increasing the interval between the upper front avoidance part and the center reference plane in the up-down direction towards the shoulder opening, the lower wing plate is provided with a pair of lower front avoidance parts arranged on the inner surface part of the lower wing plate opposite to the upper wing plate and arranged at the end parts of the left and right shoulder openings, each lower front avoidance part has an inclined surface gradually increasing the interval between the lower front avoidance part and the center reference plane in the up-down direction towards the shoulder opening, and the depth of the lower front avoidance part relative to the center reference plane is smaller than the depth of the upper front avoidance part relative to the center reference plane.

[0010] In the puller of the utility model, preferably, the maximum size of the up-down direction in the lower front avoidance part is smaller than the maximum size of the up-down direction in the upper front avoidance part.

[0011] Preferably, the slider body has left and right upper flange portions extending from left and right side edge portions of the upper panel toward the lower panel, and left and right lower flange portions extending from left and right side edge portions of the lower panel toward the upper panel, the upper panel has a first upper reference inclined surface provided between the upper side front avoidance portion and the connecting column, and a second upper reference inclined surface provided between the upper side front avoidance portion and the upper flange portion, the first upper reference inclined surface and the second upper reference inclined surface each have an inclined surface inclined in such a manner that a gap in the vertical direction between the first upper reference inclined surface or the second upper reference inclined surface and the central reference surface gradually increases toward the shoulder, the upper side front avoidance portion has a portion recessed from the central reference surface toward the vertical direction with respect to the first upper reference inclined surface and the second upper reference inclined surface, the lower panel has a first lower reference inclined surface provided between the lower side front avoidance portion and the connecting column, and a second lower reference inclined surface provided between the lower side front avoidance portion and the lower flange portion, the first lower reference inclined surface and the second lower reference inclined surface each have an inclined surface inclined in such a manner that a gap in the vertical direction between the first lower reference inclined surface or the second lower reference inclined surface and the central reference surface gradually increases toward the shoulder, and the lower side front avoidance portion has a portion recessed from the central reference surface toward the vertical direction with respect to the first lower reference inclined surface and the second lower reference inclined surface.

[0012] Further, preferably, the inclined surface of the upper side front avoidance portion and the inclined surface of the lower side front avoidance portion have mutually different shapes in a cross-sectional view of the upper panel and the lower panel along the vertical direction.

[0013] Furthermore, preferably, the inclined surface of the upper side front avoidance portion has a first upper side front inclined surface and a second upper side front inclined surface, the first upper side front inclined surface is formed by a curved surface curved in a convex manner bulging toward the lower panel in a cross-sectional view of the upper panel along the vertical direction and along a direction in which the inclined surface is inclined, and the second upper side front inclined surface is formed by a straight planar surface, the inclined surface of the lower side front avoidance portion has a first lower side front inclined surface, a second lower side front inclined surface, and a third lower side front inclined surface, the first lower side front inclined surface is formed by a straight planar surface in a cross-sectional view of the lower panel along the vertical direction and along a direction in which the inclined surface is inclined, the second lower side front inclined surface is formed by a curved surface curved in a convex manner bulging toward the upper panel, and the third lower side front inclined surface is formed by a curved surface curved in a concave manner away from the upper panel.

[0014] Moreover, it is preferable that the upper wing plate has an upper main plane formed toward the chain guide path and in parallel with the front-rear direction, the upper front avoidance portion has a shape curved in a convex manner in a manner bulging toward a direction in which the chain enters the chain guide path from the shoulder opening, the lower wing plate has a lower main plane formed toward the chain guide path and in parallel with the front-rear direction, and the lower front avoidance portion has a shape curved in a convex manner in a manner bulging toward a direction in which the chain enters the chain guide path from the shoulder opening.

[0015] In the present application, it is preferable that at least one of the upper wing plate and the lower wing plate has a rear avoidance portion that is inclined in a manner in which a separation in the up-down direction between an inner surface of the upper wing plate or the lower wing plate and the center reference plane gradually decreases toward the rear opening.

[0016] In this case, it is preferable that the rear avoidance portion has an upper rear avoidance portion provided to the upper wing plate and a lower rear avoidance portion provided to the lower wing plate, and the upper rear avoidance portion and the lower rear avoidance portion have a shape symmetrical in the up-down direction.

[0017] In addition, it is preferable that the slider main body has at least one of left and right upper flange portions protruding from left and right side edge portions of the upper wing plate toward the lower wing plate and left and right lower flange portions protruding from left and right side edge portions of the lower wing plate toward the upper wing plate, at least one of the upper flange portions and the lower flange portions has a flange parallel portion in which a separation between the left and right upper flange portions or between the left and right lower flange portions is constant and a flange curved portion in which the separation between the left and right upper flange portions or between the left and right lower flange portions gradually increases toward the front, and in a case where a region in the front-rear direction between the rear opening and a boundary position between the flange parallel portion and the flange curved portion is defined as a chain engagement region, the rear avoidance portion is continuously provided in a range of 70% or more of the chain engagement region in the front-rear direction.

[0018] Moreover, it is preferable that the rear avoidance portion is formed as a curved surface curved in a convex manner toward the chain guide path in a cross-sectional view orthogonal to the left-right direction.

[0019] In the utility model, preferably, the shape of the inclined surface of the upper side front avoiding portion when observed in the section along the up-down direction and the direction of the inclination of the inclined surface of the upper wing plate is different from the shape of the inclined surface of the rear avoiding portion when observed in the section orthogonal to the left-right direction, and the shape of the inclined surface of the lower side front avoiding portion when observed in the section along the up-down direction and the direction of the inclination of the inclined surface of the lower wing plate is different from the shape of the inclined surface of the rear avoiding portion when observed in the section orthogonal to the left-right direction.

[0020] In addition, preferably, the rear avoiding portion is formed to be capable of contacting the left and right tooth rows in the state of engaging with each other when the puller is mounted on the tooth rows of the pair of zipper tapes, the rear avoiding portion always has a first contact portion contacting one of the zipper teeth of the tooth row of one side forming engagement and a second contact portion contacting one of the zipper teeth of the tooth row of the other side forming engagement when the left and right tooth rows contact each other, and the surface between the first contact portion and the second contact portion in the rear avoiding portion is formed as a convex curved surface.

[0021] Furthermore, preferably, the size of the rear avoiding portion in the front-rear direction is larger than the interval between the zipper teeth arranged adjacent to each other in the tooth row of one side when the puller is mounted on the tooth rows of the pair of zipper tapes.

[0022] Utility model effects

[0023] According to the puller of the utility model, even if the sliding operation is repeatedly performed, the inner surface of the puller main body can be difficult to produce grinding on the zipper teeth. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the perspective view of the puller of the embodiment 1 of the utility model from the oblique upper side.

[0025] Figure 2 It is the perspective view of the puller shown from the oblique lower side. Figure 1

[0026] Figure 3 It is the side view of the puller shown. Figure 1

[0027] Figure 4 It is the sectional view of the upper wing plate of the puller shown from the lower side. Figure 1

[0028] Figure 5 It is the sectional view of the upper wing plate of the puller shown from the upper side. Figure 1 ​​​A cross-sectional view of the lower flap of the slider shown.

[0029] Figure 6 is Figure 4 A cross-sectional view at the VI-VI line of the upper flap shown.

[0030] Figure 7 is Figure 5 A cross-sectional view at the VII-VII line of the lower flap shown.

[0031] Figure 8 is schematically illustrating Figure 1 A cross-sectional view of the slider and the slide fastener elements when the slider is mounted to the slide fastener chain shown.

[0032] Figure 9 is schematically illustrating Figure 1 An explanatory diagram of the relationship between the rear escape portion of the slider and the slide fastener elements when the slider is mounted to the slide fastener chain shown.

[0033] Figure 10 is showing Figure 9 A cross-sectional view showing the rear escape portion and the slide fastener elements shown in an enlarged manner.

[0034] Figure 11 is an explanatory diagram schematically illustrating the relationship between the fastener chain and the slider in the case where the fastener chain is bent in the direction of the back of the tape.

[0035] Figure 12 is a cross-sectional view of the upper flap of the slider of Embodiment 2 of the present utility model from the lower side.

[0036] Figure 13 is a cross-sectional view of the upper flap of the slider of Embodiment 2 of the present utility model from the lower side. Figure 12 A cross-sectional view of the lower flap of the slider shown.

[0037] BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 1, 2: slider

[0039] 5: fastener chain

[0040] 6: slide fastener element

[0041] 6a: head portion of the fastener element

[0042] 6b: leg portion of the fastener element

[0043] 10, 10a: slider main body

[0044] 11: connecting column

[0045] 12: upper flange portion

[0046] 13: lower flange portion

[0047] 14: pull tab mounting portion

[0048] 16a: flange parallel portion

[0049] 16b: flange curved portion

[0050] 17: boundary position

[0051] 18: shoulder opening

[0052] 19: rear opening

[0053] 20, 20a: upper blade

[0054] 21, 21a: upper blade inner surface (upper side tooth guide surface)

[0055] 22: upper blade outer surface (upper blade upper surface)

[0056] 23: upper blade outer peripheral surface

[0057] 24, 24a: upper side main plane

[0058] 25: upper side front avoidance portion

[0059] 25a: first upper side front inclined surface

[0060] 25b: second upper side front inclined surface

[0061] 25c: midpoint

[0062] 26: upper side reference inclined portion

[0063] 26a: first upper side reference inclined portion

[0064] 26b: second upper side reference inclined portion

[0065] 27: upper side rear avoidance portion

[0066] 28a: first boundary portion

[0067] 28b: second boundary portion

[0068] 29: first accommodation layer difference portion

[0069] 29a: first bottom surface portion

[0070] 29b: first connecting portion

[0071] 30, 30a: lower blade

[0072] 31, 31a: lower blade inner surface (lower side tooth guide surface)

[0073] 32: lower blade outer surface (lower blade lower surface)

[0074] 33: lower blade outer peripheral surface

[0075] 34, 34a: lower main plane

[0076] 35: lower front avoidance portion

[0077] 35a: first lower front inclined surface

[0078] 35b: second lower front inclined surface

[0079] 35c: third lower front inclined surface

[0080] 35d: midpoint

[0081] 36: lower reference inclined portion

[0082] 36a: first lower reference inclined portion

[0083] 36b: second lower reference inclined portion

[0084] 37: lower rear avoidance portion

[0085] 38a: first boundary portion

[0086] 38b: second boundary portion

[0087] 39: second accommodation layer difference portion

[0088] 39a: second bottom surface portion

[0089] 39b: second connecting portion

[0090] 40: imaginary reference line

[0091] 4: imaginary top end connecting line

[0092] 46: first contact portion

[0093] 47: second contact portion

[0094] 50: central reference surface

[0095] 51: vertical direction interval between the upper front avoidance portion and the central reference surface

[0096] 52: vertical direction interval between the lower front avoidance portion and the central reference surface

[0097] 53: depth of the upper front avoidance portion with respect to the central reference surface

[0098] 54: depth of the lower front avoidance portion with respect to the central reference surface

[0099] D1: dimension of the upper rear avoidance portion or the lower rear avoidance portion in the front-rear direction

[0100] D2: interval between the zipper teeth

[0101] T1: maximum dimension in the thickness direction at the upper front avoidance portion

[0102] T2: maximum dimension in the thickness direction at the lower front avoidance portion

[0103] θ1: upper avoidance inclination angle

[0104] θ2: lower avoidance inclination angle DETAILED DESCRIPTION

[0105] Hereinafter, a preferred embodiment of the present application will be described with reference to the drawings while citing examples.

[0106] Example 1

[0107] Figure 1 is a perspective view schematically showing the puller when viewed obliquely from above. Figure 2 is a perspective view when viewed obliquely from below, Figure 3 is a side view of the puller of Example 1. Figure 4 and Figure 5 are cross-sectional views showing the upper wing plate and the lower wing plate of the puller of Example 1, respectively.

[0108] In the following description of the puller 1 and the zipper, the front-rear direction is the longitudinal direction of the puller 1, and is the direction along which the puller 1 slides when installed in the fastener stringer 5 of the zipper. In this case, the direction in which the puller 1 is moved so that the fastener stringer 5 of the zipper engages is set as the front direction (shoulder opening side direction), and the direction in which the puller 1 is moved so that the fastener stringer 5 separates is set as the rear direction (back opening side direction).

[0109] The up-down direction is the height direction of the puller 1, and refers to, for example, a direction orthogonal to the upper wing plate 20 and the lower wing plate 30 described later with respect to the puller main body 10 or a direction along the connecting column 11 described later with respect to the puller main body 10. In this case, the direction in which a pull tab (not shown) is installed with respect to the puller main body 10 of the puller 1 is set as the upper direction, and the direction opposite thereto is set as the lower direction.

[0110] The left-right direction is the width direction of the puller 1, and is a direction orthogonal to the longitudinal direction and the height direction of the puller 1.

[0111] The puller 1 of Example 1 is used for a zipper (not shown) having a pair of left and right fastener stringers (not shown) on which a plurality of zipper fasteners 6 are installed. The puller 1 is installed in the fastener stringer 5 of each fastener stringer. The puller 1 is capable of sliding along the fastener stringer 5 in a direction in which the zipper fasteners 6 engage (front direction) and a direction in which the zipper fasteners 6 separate (rear direction).

[0112] The left and right zipper tape each has a woven thin tape-shaped zipper tape, and a plurality of metal zipper teeth 6 installed on the opposite tape side edge portions of the zipper tape. Each zipper tooth 6 has, for example, as shown in Figures 8-10 FIG. 6, a tooth head portion 6a provided with an engagement protrusion and an engagement recess, and a pair of tooth legs 6b extending in the left and right directions from the tooth head portion 6a. By the plurality of zipper teeth 6 installed to the zipper tape, a tooth row 5 is continuously formed in the tape length direction of the zipper tape.

[0113] The puller 1 of this embodiment 1 is formed of two components, a puller main body 10 and a pull tab not shown. The puller main body 10 is made by die casting a metal material such as an aluminum alloy or a zinc alloy. Note that in the present invention, the material and the production method of the puller main body 10 are not particularly limited.

[0114] The pull tab (not shown) can use the same pull tab as has been conventionally used. For example, the pull tab has a pull tab main body portion that becomes a pinch portion, a pair of left and right arm portions extending from one end portion of the pull tab main body portion, and a mounting shaft portion linking between the tip end portions of the arm portions. Note that in the present invention, the shape, the configuration, the size, and the like of the pull tab are not particularly limited.

[0115] The puller main body 10 of this embodiment 1 has a shape that is left-right symmetrical with the center plane in the puller main body 10 as a reference. The puller main body 10 has an upper wing plate 20, a lower wing plate 30 disposed apart from the upper wing plate 20, a link column 11 linking between the front end portion of the upper wing plate 20 and the front end portion of the lower wing plate 30, left and right upper flange portions 12 disposed at the left and right side edge portions of the upper wing plate 20 and extending toward the lower wing plate 30, left and right lower flange portions 13 disposed at the left and right side edge portions of the lower wing plate 30 and extending toward the upper wing plate 20, and a pull tab mounting portion 14 rising from the upper surface of the upper wing plate 20 and extending in the front and rear directions.

[0116] The upper flange portion 12 of the puller main body 10 has a flange parallel portion 16a extending in the front and rear directions in such a manner that the interval between the left and right upper flange portions 12 becomes a constant size, and a flange curved portion 16b extending from the front end portion of the flange parallel portion 16a toward the front and the interval between the left and right upper flange portions 12 gradually increases toward the front (see Figure 4 ).

[0117] The lower flange portion 13, like the upper flange portion 12, has a flange parallel portion 16a extending in the front and rear directions in such a manner that the interval between the left and right lower flange portions 13 becomes a constant size, and a flange curved portion 16b extending from the front end portion of the flange parallel portion 16a toward the front and the interval between the left and right lower flange portions 13 gradually increases toward the front (see Figure 5Furthermore, the interval between the left and right upper flange portions 12 and the interval between the left and right lower flange portions 13 refer to the distance along the left and right direction between the inner surfaces of the flanges of the left and right upper flange portions 12 or the left and right lower flange portions 13.

[0118] The aforementioned pull tab (not shown) is installed on the pull tab mounting portion 14 of the zipper head body 10. A pair of shoulder openings 18 are formed at the front end of the zipper head body 10, opening on both sides of the connecting post 11. A rear opening 19 is formed at the rear end of the zipper head body 10, surrounded by an upper flange 20, a lower flange 30, left and right upper flange portions 12, and left and right lower flange portions 13, and opening towards the rear. A Y-shaped tooth guide is formed between the upper flange 20 and the lower flange 30, connecting the left and right shoulder openings 18 and the rear opening 19. On the left and right side edges of the zipper head body 10, between the upper flange portion 12 and the lower flange portion 13, a zipper tape (not shown) is formed for the zipper tape to pass through. The tape tape gap communicates with the tooth guide.

[0119] The inner surface of the zipper head body 10 has a tooth guide surface facing the tooth guide path of the zipper head body 10. The tooth guide surface is used to guide the movement of the zipper teeth 6 inside the zipper head body 10. The tooth guide surface has an upper wing inner surface (upper tooth guide surface) 21 provided on the upper wing plate 20, a lower wing inner surface (lower tooth guide surface) 31 provided on the lower wing plate 30, the flange inner surfaces of the left and right upper flange portions 12, and the flange inner surfaces of the left and right lower flange portions 13.

[0120] The upper wing plate 20 is provided with: an outer surface (upper upper surface of the upper wing plate) 22, which is disposed on the opposite side of the inner surface 21 of the upper wing plate and faces upward; and an outer peripheral surface 23, which is disposed along the outer periphery of the upper wing plate 20 and is continuous with the outer surface 22 and the inner surface 21 of the upper wing plate. The lower wing plate 30 is provided with: an outer surface (lower surface of the lower wing plate) 32, which is disposed on the opposite side of the inner surface 31 of the lower wing plate and faces downward; and an outer peripheral surface 33, which is disposed along the outer periphery of the lower wing plate 30 and is continuous with the outer surface 32 and the inner surface 31 of the lower wing plate. The outer peripheral surfaces 23 of the upper wing plate and 33 of the lower wing plate are arranged in a direction orthogonal to the vertical direction.

[0121] For example, Figure 2 and Figure 4 As shown, the inner surface 21 of the upper wing plate has: an upper main plane 24, which is formed parallel to the front-rear direction; a pair of upper front avoidance portions 25, which are provided at the ends of the left and right shoulder openings 18; an upper reference inclined portion 26, which is provided on both sides of each upper front avoidance portion 25; and an upper rear avoidance portion 27, which is provided at the rear end of the portion (inner surface portion) on the inner surface 21 of the upper wing plate (end on the rear opening 19 side).

[0122] Furthermore, in the present utility model, the end portion of the shoulder port 18 side (also sometimes referred to as the shoulder port side end portion) in the upper flap inner surface 21 and the lower flap inner surface 31 is respectively a portion in the upper flap 20 or the lower flap 30 extending from the shoulder port 18 toward the inner side of the puller main body 10. In addition, the shoulder port side end portion can also be said to be a portion adjacent to the shoulder port 18 and the area near it of the upper flap inner surface 21 or the lower flap inner surface 31. The end portion of the rear port 19 side (also sometimes referred to as the rear port side end portion) in the upper flap inner surface 21 and the lower flap inner surface 31 is a portion in the upper flap 20 and the lower flap 30 extending from the rear port 19 toward the inner side of the puller main body 10. In addition, the rear port side end portion can also be said to be a portion adjacent to the rear port 19 and the area near it of the upper flap inner surface 21 and the lower flap inner surface 31.

[0123] The upper side main plane 24 of the upper flap 20 is formed by a flat surface arranged orthogonally to the up-down direction. When the upper flap inner surface 21 is observed from the lower side (refer to Fig. 1), the upper side main plane 24 is surrounded by the connecting column 11, the left and right upper flange portions 12, the left and right upper side front avoidance portions 25, the plurality of upper side reference inclined portions 26, and the upper side rear avoidance portion 27. Figure 4

[0124] The upper side front avoidance portion 25 is arranged in the left and right shoulder port side end portions in the portion (inner surface portion) of the upper flap inner surface 21 side of the upper flap 20, and is formed so as to be able to avoid contact with at least a portion of the slide fastener element 6. The left and right upper side front avoidance portions 25 have shapes that are left-right symmetrical with each other.

[0125] In the puller main body 10, an imaginary plane that passes through the center of the up-down direction of the connecting column 11 and is orthogonal to the up-down direction is defined as a center reference plane 50 (refer to Fig. 1). In this case, each of the left and right upper side front avoidance portions 25 has an inclined surface that is inclined in such a way that the up-down direction interval 51 (refer to Fig. 1) between the upper side front avoidance portion 25 and the center reference plane 50 gradually increases toward the shoulder port 18. In addition, the inclined surface of the upper side front avoidance portion 25 of the present embodiment 1 can also be said to be inclined in such a way that the thickness dimension of the upper flap 20 decreases toward the shoulder port 18. Here, the thickness dimension of the upper flap 20 refers to the dimension in the up-down direction between the upper flap inner surface 21 and the upper flap outer surface 22. Figure 3 Figure 3

[0126] For example, in the present embodiment 1, the inclined surface of the upper side front avoidance portion 25 has a first upper side front inclined surface 25a and a second upper side front inclined surface 25b, and when the cross section at the VI-VI line shown in Fig. 1 is observed (refer to Fig. 2), the first upper side front inclined surface 25a is a portion in the upper side front avoidance portion 25 that is inclined in such a way that the up-down direction interval 51 gradually increases toward the shoulder port 18. In addition, the second upper side front inclined surface 25b is a portion in the upper side front avoidance portion 25 that is inclined in such a way that the up-down direction interval 51 gradually decreases toward the shoulder port 18. Figure 4 Figure 6 ​​​​), the first upper front inclined surface 25a is formed by a curved surface curved in a convex manner bulging toward the lower wing plate 30, and the second upper front inclined surface 25b is formed by a straight planar surface. The first upper front inclined surface 25a is provided at a portion closer to the shoulder opening 18 than the second upper front inclined surface 25b.

[0127] Here, Figure 4 The VI-VI line shown is also a virtual reference line 40 in a direction inclined along the upper and lower directions and along the inclined surface of the upper front avoidance portion 25 (in other words, a direction in which the thickness dimension of the upper wing plate 20 decreases). Further, the virtual reference line 40 of the upper wing plate 20 in Embodiment 1 is a straight line that, for example, when the upper wing plate 20 is viewed from the lower side, is orthogonal to the virtual top end connecting line 41 that virtually connects the left and right side edges of the top end portion of the upper front avoidance portion 25 that is closer to the shoulder opening 18. Figure 4 ), when a straight line formed by virtually connecting the left and right side edges of the top end portion of the upper front avoidance portion 25 that is closer to the shoulder opening 18 is defined as a virtual top end connecting line 41, a straight line that passes through the midpoint of the virtual top end connecting line 41 and is orthogonal to the virtual top end connecting line 41. In addition, the virtual reference line 40 of the upper wing plate 20 can also be formed by a straight line inclined at a prescribed angle in a range of 30° or more and 45° or less with respect to the left and right directions, for example.

[0128] By the upper front avoidance portion 25 having the inclined surface as described above, it is possible to prevent the slide fastener element 6 from hooking on the upper front avoidance portion 25 and the slide fastener element 6 from tilting in an inappropriate posture when the slide fastener element 6 enters the element guide path from the shoulder opening 18. Further, in the present invention, the inclined surface of the upper front avoidance portion 25 can be formed by at least one of a curved surface curved in a convex manner bulging toward the lower side and a straight planar surface.

[0129] The inclined surface of the upper front avoidance portion 25 is formed as a curved surface (bent surface) that, for example, in a cross-sectional view in which the upper wing plate 20 is cut by the virtual top end connecting line 41 described above in parallel with the upper and lower directions (not shown), is gently curved in a convex manner bulging toward the lower wing plate 30.

[0130] Here, a dimension in the thickness direction (upper and lower directions) from the position of the first boundary portion 28a between the inclined surface of the upper front avoidance portion 25 and the upper wing plate outer peripheral surface 23 to the position of the upper main planar surface 24 is defined as the maximum dimension T1 in the thickness direction in the upper front avoidance portion 25 (see FIG. 6). Figure 6 ) The maximum value of the dimension in the thickness direction (upper and lower directions) of the upper wing plate 20 from the upper wing plate outer surface 22 to the upper wing plate inner surface 21 is defined as the maximum dimension in the thickness direction in the upper wing plate 20.

[0131] Further, the first boundary portion 28a between the inclined surface of the upper side front avoiding portion 25 and the upper flap outer peripheral surface 23 is continuously provided from the boundary portion between the upper side reference inclined portion 26 and the upper flap outer peripheral surface 23. In other words, the upper side front avoiding portion 25 and the upper side reference inclined portion 26 are formed while making the shape of the upper flap inner surface 21 different from each other, but the upper flap outer peripheral surface 23 continuously formed from the upper side front avoiding portion 25 and the upper flap outer peripheral surface 23 continuously formed from the upper side reference inclined portion 26 are smoothly continuous. Therefore, by comparing the shapes of the upper side front avoiding portion 25, the upper side reference inclined portion 26, and the upper flap outer peripheral surface 23, the first boundary portion 28a between the inclined surface of the upper side front avoiding portion 25 and the upper flap outer peripheral surface 23 and the boundary portion between the inclined surface of the upper side reference inclined portion 26 and the upper flap outer peripheral surface 23 can be easily recognized.

[0132] Further, in the present embodiment 1, it can also be that, for example, when observing a cross section at the imaginary reference line 40 of the upper flap 20 (see FIG. 6), the first boundary portion 28a between the inclined surface of the upper side front avoiding portion 25 and the upper flap outer peripheral surface 23 is determined as follows. Figure 6 Further, in the present embodiment 1, it can also be that, for example, when observing a cross section at the imaginary reference line 40 of the upper flap 20 (see FIG. 6), the first boundary portion 28a between the inclined surface of the upper side front avoiding portion 25 and the upper flap outer peripheral surface 23 is determined as follows.

[0133] In the present embodiment 1, the maximum dimension T1 in the thickness direction in the upper side front avoiding portion 25 is set to be 25% or more and 75% or less of the maximum dimension in the thickness direction in the upper flap 20, and is preferably set to be 35% or more and 60% or less of the maximum dimension in the thickness direction in the upper flap 20. By making the above-mentioned maximum dimension T1 of the upper side front avoiding portion 25 25% or more of the maximum dimension in the thickness direction in the upper flap 20, when the slider 1 is caused to slide with respect to the fastener chain 5 as described later, the shoulder port side end portion of the upper flap inner surface 21 can be made to be difficult to abrade the fastener chain 6.

[0134] By making the above-mentioned maximum dimension T1 of the upper side front avoiding portion 25 75% or less of the maximum dimension in the thickness direction in the upper flap 20, the strength of the shoulder port side end portion of the upper flap 20 can be appropriately ensured. Further, for example, when the slider 1 is caused to slide with respect to the fastener chain 5 in the direction of engagement of the fastener chain (front direction), the fastener chain 6 can be prevented from being hooked to the upper side front avoiding portion 25, and the fastener chain 6 can be easily caused to enter the chain guide path of the slider main body 10 in an appropriate posture.

[0135] The upper side front avoiding portion 25 is smoothly continuous with respect to the upper side main plane 24 of the upper wing plate 20, and no step or unevenness is provided between the upper side front avoiding portion 25 and the upper side main plane 24. Between the upper side front avoiding portion 25 and the upper side main plane 24 in the upper wing plate inner surface 21, as shown in, for example, FIG. 6, a second boundary portion 28b that divides the upper side front avoiding portion 25 and the upper side main plane 24 is provided in a shape that is curved in a convex manner in a direction in which the upper side front avoiding portion 25 bulges into the chain guide path from the shoulder port 18. Figure 4

[0136] In other words, the second boundary portion 28b is provided in a shape that is curved in a convex manner toward the link post 11 (particularly, toward the rear end portion of the link post 11) or in a shape that is curved in a convex manner toward a confluence portion at which the two chain guide paths on the left and right sides converge on the rear side of the link post 11.

[0137] By providing the upper side front avoiding portion 25 in the manner that the second boundary portion 28b of the upper wing plate 20 has the above-described curved shape, the upper wing plate 20 can ensure an appropriate strength. In addition, the upper side front avoiding portion 25 that can avoid contact with the slide fastener chain 6 can be stably provided in an appropriate size.

[0138] In this case, the second boundary portion 28b of the upper wing plate 20 is provided separately from the link post 11. In addition, the second boundary portion 28b is formed in the range of a post gradual reduction portion of the link post 11 in which the left-right direction dimension of the link post 11 gradually decreases toward the rear in the front-rear direction. Further, the range of the post gradual reduction portion in the front-rear direction is a range from a boundary position between a portion in which the left-right direction dimension of the link post 11 gradually increases toward the rear and a portion in which the left-right direction dimension of the link post 11 gradually decreases toward the rear to a rear end position of the link post 11 (a position of the link post 11 that is closest to the rear port 19).

[0139] The upper side reference inclined portion 26 is provided on both sides of the upper side front avoiding portion 25, and the upper side reference inclined portion 26 is inclined in a manner that the vertical direction interval between the upper wing plate inner surface 21 and the central reference surface 50 gradually increases toward the shoulder port 18. In this case, the inclined surface of the upper side reference inclined portion 26 is inclined in a manner that the thickness dimension of the upper wing plate 20 gradually decreases toward the shoulder port 18.

[0140] By the provision of the upper side reference inclined portion 26, the upper side front avoiding portion 25 is provided separately from the link post 11 and the upper flange portion 12, respectively. In addition, the inclined surface of the upper side front avoiding portion 25 has a portion that is recessed with respect to the two adjacent upper side reference inclined portions 26 in a manner that the central reference surface 50 is distanced in the vertical direction. That is, the inclined surface of the upper side front avoiding portion 25 is recessed toward the upper side compared to the two upper side reference inclined portions 26 on the adjacent sides.

[0141] ​The upper front avoidance portion 25 has the shape described above, and has a portion that is recessed with respect to the left and right upper reference inclined portions 26, whereby, for example, when the slide fastener element 6 moves in the element guide path of the slider main body 10 while being in contact with the upper wing plate inner surface 21, the element head portion 6a and / or the element leg portion 6b of the slide fastener element 6 can stably come into contact with at least one of the upper reference inclined portions 26. In addition, at least a portion of the slide fastener element 6 can be separated from the upper front avoidance portion 25.

[0142] Thus, when the slider 1 slides, in the element guide path of the slider main body 10, the slide fastener element 6 can be moved forward or backward while being held in a proper posture by the upper reference inclined portions 26. At the same time, at least a portion of the slide fastener element 6 can be brought into a non-contact state with respect to the upper front avoidance portion 25 of the upper wing plate 20. That is, a non-contact portion, which does not come into contact with the upper wing plate inner surface 21, can be formed in at least a portion of the slide fastener element 6. Furthermore, when the slider 1 slides, depending on the position and posture of the slide fastener element 6, a portion of the slide fastener element 6 can sometimes come into partial contact with the inclined surface of the upper front avoidance portion 25, but even in this case, at least a portion of the slide fastener element 6 does not come into contact with the inclined surface of the upper front avoidance portion 25.

[0143] The upper reference inclined portions 26 of the present embodiment 1 have a first upper reference inclined portion 26a provided between the upper front avoidance portion 25 and the connecting column 11, and a second upper reference inclined portion 26b provided between the upper front avoidance portion 25 and the upper flange portion 12. Each of the upper reference inclined portions 26 is inclined in such a manner that the vertical direction interval between the upper wing plate inner surface 21 and the central reference plane 50 gradually increases toward the shoulder opening 18. The upper reference inclined portions 26 are formed so as to bulge downward or protrude downward in such a manner as to approach the lower wing plate 30, as compared with the upper front avoidance portion 25. The upper reference inclined portions 26 are formed so as to smoothly continue with the upper main plane 24.

[0144] The upper rear avoidance portion 27 of the upper wing plate 20 is provided at the end portion on the rear opening 19 side in the portion on the upper wing plate inner surface 21 side. The upper rear avoidance portion 27 has a shape that is inclined in such a manner that the vertical direction interval between the upper wing plate inner surface 21 and the central reference plane 50 gradually increases toward the rear opening 19, when a cross section orthogonal to the left and right directions of the upper wing plate 20 is observed (see, for example, FIG. 8). Figure 9 In other words, the upper rear avoidance portion 27 is inclined in such a manner that the thickness dimension of the upper wing plate 20 gradually decreases toward the rear opening 19.

[0145] Further, the inclined surface of the upper-side rear avoidance portion 27 is formed by a curved surface that, when a cross section of the upper flap 20 orthogonal to the left-right direction is observed, is curved in a convex manner bulging toward the lower flap 30 (or toward the fastener guide path). In particular, in the present embodiment 1, the inclined surface of the upper-side rear avoidance portion 27 is formed as a curved surface that is convex in the entire range of the front-rear direction of the upper-side rear avoidance portion 27.

[0146] In the upper flap 20 of the present embodiment 1, in order to cope with the difference in the manner of contact of the fastener elements 6 with respect to the upper flap inner surface 21 when the puller 1 is slid in the front or rear direction, the inclined surface of the upper-side front avoidance portion 25 (see Figure 6 ) and the inclined surface of the upper-side rear avoidance portion 27 (see Figure 9 ) have mutually different shapes when a cross section of the upper flap 20 is observed with the imaginary reference line 40.

[0147] By forming the inclined surface of the upper-side front avoidance portion 25 and the inclined surface of the upper-side rear avoidance portion 27 in mutually different shapes as such, it is possible to prevent or suppress the fastener elements 6 from being strongly rubbed by the upper flap 20 by different methods respectively, whether when the disengaged fastener elements 6 move while contacting the shoulder-port side end portion of the upper flap 20, or when the engaged fastener elements 6 move while contacting the back-port side end portion of the upper flap 20, making it difficult to grind the fastener elements 6.

[0148] Further, in the present embodiment 1, when the upper flap inner surface 21 is observed from below (see Figure 4 ), the upper-side rear avoidance portion 27 is provided in the region of the upper flange portion 12 in which the boundary position 17 between the flange parallel portion 16a and the flange curved portion 16b to the position of the back-port 19.

[0149] Here, the region in the front-rear direction between the back-port 19 of the puller main body 10 and the boundary position 17 between the flange parallel portion 16a and the flange curved portion 16b is defined as a fastener engagement region. In this case, the upper-side rear avoidance portion 27 of the present embodiment 1 is continuously provided in the range of 70% or more to 100% or less of the fastener engagement region in the front-rear direction.

[0150] By providing the upper rear avoidance portion 27 in a range of 70% or more of the fastener engagement region, the two fasteners 6 can be brought into contact with the upper rear avoidance portion 27, and thus the fasteners 6 can be effectively prevented or suppressed from being strongly rubbed by the upper flap 20. In addition, the upper rear avoidance portion 27 can be easily formed with a gentle inclination. By providing the upper rear avoidance portion 27 in a range of 100% or less of the fastener engagement region, as described later, the left and right fasteners 6 can be stably engaged in a range on the front side of the upper rear avoidance portion 27 in the fastener guide path. In the present embodiment 1, it is preferable that the upper rear avoidance portion 27 be continuously formed in the front-rear direction from the position of the rear mouth 19 of the puller body 10 to the boundary position 17 between the flange parallel portion 16a and the flange curved portion 16b.

[0151] The lower flap inner surface 31 of the lower flap 30 has, as shown in, for example, Figure 1 and Figure 5 the lower main plane 34 formed parallel to the front-rear direction, a pair of left and right lower front avoidance portions 35 provided at end portions on the left and right shoulder mouths 18 sides, a lower reference inclined portion 36 provided at both sides of each of the lower front avoidance portions 35, and a lower rear avoidance portion 37 provided at a rear end portion of a portion (inner surface portion) on the lower flap inner surface 31 side.

[0152] The lower main plane 34 of the lower flap 30 is formed by a flat surface disposed orthogonal to the up-down direction. The lower main plane 34 is disposed in parallel to the upper main plane 24 of the upper flap 20. When the lower flap inner surface 31 is viewed from the upper side (refer to Figure 5 ), the lower main plane 34 is surrounded by the connecting column 11, the left and right lower flange portions 13, the left and right lower front avoidance portions 35, the plurality of lower reference inclined portions 36, and the lower rear avoidance portion 37.

[0153] The lower front avoidance portion 35 is disposed at the left and right shoulder mouth side end portions in the portion (inner surface portion) on the lower flap inner surface 31 side of the lower flap 30, and is formed so as to avoid contact with at least a portion of the fasteners 6. The left and right lower front avoidance portions 35 have shapes that are left-right symmetrical with each other. Each of the lower front avoidance portions 35 has an inclined surface that is inclined in such a manner that the up-down direction interval 52 (refer to Figure 3 ) between the lower front avoidance portion 35 and the central reference surface 50 gradually increases toward the shoulder mouth 18. In other words, the lower front avoidance portion 35 is inclined in such a manner that the thickness dimension of the lower flap 30 gradually decreases toward the shoulder mouth 18. Here, the thickness dimension of the lower flap 30 refers to the up-down direction dimension between the lower flap inner surface 31 and the lower flap outer surface 32.

[0154] The inclined surface of the lower front avoidance portion 35 has a first lower front inclined surface 35a, a second lower front inclined surface 35b, and a third lower front inclined surface 35c, which are observed in the up-down direction of the lower flap 30. Figure 5The cross section at the VII-VII line (imaginary reference line 40) shown (see Figure 7 The first lower front inclined surface 35a is formed by a straight plane, the second lower front inclined surface 35b is formed by a curved surface curved in a convex manner bulging toward the upper wing plate 20, and the third lower front inclined surface 35c is formed by a curved surface curved in a concave manner away from the upper wing plate 20. In this case, the first lower front inclined surface 35a is provided at a portion closer to the shoulder opening 18 than the second lower front inclined surface 35b, and the second lower front inclined surface 35b is provided at a portion closer to the shoulder opening 18 than the third lower front inclined surface 35c.

[0155] Further, for example, in a case where a straight line formed by imaginarily connecting the left and right side edges of the top end portion of the lower front avoidance portion 35 closer to the shoulder opening 18 is defined as an imaginary top end connecting line 41, the imaginary reference line 40 of the lower wing plate 30 in Embodiment 1 is a straight line passing through the midpoint of the imaginary top end connecting line 41 and orthogonal to the imaginary top end connecting line 41. In addition, the imaginary reference line 40 of the lower wing plate 30 can also be formed by, for example, a straight line inclined at a prescribed angle in a range of 30° or more and 45° or less with respect to the left-right direction. The slider main body 10 of Embodiment 1 is preferably formed such that the inclination angle of the imaginary reference line 40 in the upper wing plate 20 with respect to the left-right direction and the inclination angle of the imaginary reference line 40 in the lower wing plate 30 with respect to the left-right direction become the same angle.

[0156] By providing the lower front avoidance portion 35 with the inclined surfaces described above, it is possible to prevent the fastener chain 6 from being hooked on the lower front avoidance portion 35 and the fastener chain 6 from being inclined in an inappropriate posture when the fastener chain 6 enters the chain guide path from the shoulder opening 18. Further, in the present application, the inclined surface of the lower front avoidance portion 35 can be formed by including at least one of a curved surface curved in a convex manner toward the upper side, a curved surface curved in a concave manner toward the lower side, and a straight plane.

[0157] In a cross-sectional view in which the lower wing plate 30 is cut in parallel with the up-down direction at the imaginary top end connecting line 41 described above (not shown), for example, the inclined surface of the lower front avoidance portion 35 is formed as a curved surface (curved face) gently curved in a manner in which the central portion of the inclined surface bulges in a convex manner toward the upper wing plate 20.

[0158] With regard to the upper front avoidance portion 25 and the lower front avoidance portion 35 of the slider main body 10, the depth 54 of the lower front avoidance portion 35 with respect to the central reference surface 50 is set to be smaller than the depth 53 of the upper front avoidance portion 25 with respect to the central reference surface 50 (see Figure 3). In this case, the depth 53 of the upper front avoidance portion 25 with respect to the center reference surface 50 is represented by the difference between the maximum value and the minimum value of the vertical direction interval 51 between the upper front avoidance portion 25 and the center reference surface 50, and corresponds to the above-described maximum dimension Tl. In the present embodiment 1, the maximum value of the vertical direction interval 51 between the upper front avoidance portion 25 and the center reference surface 50 is the size of the vertical direction interval 51 at the position of the first boundary portion 28a. The minimum value of the vertical direction interval 51 between the upper front avoidance portion 25 and the center reference surface 50 is the size of the vertical direction interval 51 at the position of the second boundary portion 28b.

[0159] The depth 54 of the lower front avoidance portion 35 with respect to the center reference surface 50 is represented by the difference between the maximum value and the minimum value of the vertical direction interval 52 between the lower front avoidance portion 35 and the center reference surface 50, and corresponds to the maximum dimension T2 described later. In the present embodiment 1, the maximum value of the vertical direction interval 52 between the lower front avoidance portion 35 and the center reference surface 50 is the size of the vertical direction interval 52 at the position of the first boundary portion 38a between the inclined surface of the lower front avoidance portion 35 and the lower shroud outer peripheral surface 33. The minimum value of the vertical direction interval 52 between the lower front avoidance portion 35 and the center reference surface 50 is the size of the vertical direction interval 52 at the position of the second boundary portion 38b that divides the lower front avoidance portion 35 and the lower main surface 34.

[0160] By setting the depth 54 of the lower front avoidance portion 35 with respect to the center reference surface 50 to be smaller than the depth 53 of the upper front avoidance portion 25 with respect to the center reference surface 50, when the slider 1 of the present embodiment 1 is installed to the fastener string 5 that is curved in the direction opposite to the direction of the fastener tape, for example, and is caused to slide along the fastener string 5 as described later (see FIG. 9), it is possible to effectively prevent or suppress the fastener elements 6 from being polished by the lower shroud 30 of the slider main body 10. Figure 11 In addition, it is possible to make the fastener tape of the fastener difficult to be damaged by the lower flange portion 13 of the slider main body 10.

[0161] In addition, the dimension in the thickness direction (vertical direction) from the position of the first boundary portion 38a between the inclined surface of the lower front avoidance portion 35 and the lower shroud outer peripheral surface 33 to the position of the lower main surface 34 is defined as the maximum dimension T2 in the thickness direction in the lower front avoidance portion 35 (see FIG. 8). Figure 7The first boundary portion 38a between the inclined surface of the lower front avoidance portion 35 and the lower wing plate outer peripheral surface 33 is continuously provided from the boundary portion between the lower reference inclined portion 36 and the lower wing plate outer peripheral surface 33. That is, the first boundary portion 38a between the inclined surface of the lower front avoidance portion 35 and the lower wing plate outer peripheral surface 33 can be easily recognized by comparing the shapes of the lower front avoidance portion 35, the lower reference inclined portion 36, and the lower wing plate outer peripheral surface 33, as in the case of the upper front avoidance portion 25.

[0162] Further, in the present embodiment 1, it can also be that, for example, when observing a cross section at the imaginary reference line 40 of the lower wing plate 30 (see Figure 7 ), in a curved surface that curves from the lower wing plate outer peripheral surface 33 toward the lower wing plate outer surface (lower wing plate lower surface) 32, when a position at which a tangent line of the curved surface becomes a prescribed angle (for example, 30°) with respect to the vertical direction is prescribed as an auxiliary boundary position, a position on the surface of the lower wing plate 30 that is directly above the auxiliary boundary position is recognized as the first boundary portion 38a between the inclined surface of the lower reference inclined portion 36 and the lower wing plate outer peripheral surface 33.

[0163] In the slider 1 of the present embodiment 1, the upper front avoidance portion 25 and the lower front avoidance portion 35 are formed so that the maximum dimension T2 in the thickness direction in the lower front avoidance portion 35 is smaller than the maximum dimension T1 in the thickness direction in the upper front avoidance portion 25. Thereby, when the slider 1 of the present embodiment 1 is installed to the chain element 5 that is curved in the tape surface back direction of the slide fastener, for example, and is caused to slide along the chain element 5, as described later (see Figure 11 ), it is possible to effectively prevent or suppress the slide fastener element 6 from being polished by the lower wing plate 30 of the slider main body 10. In addition, it is possible to make the slide fastener tape difficult to be damaged by the lower flange portion 13 of the slider main body 10.

[0164] In the present embodiment 1, when observing a cross section at the imaginary reference line 40 of each of the upper wing plate 20 and the lower wing plate 30 (see Figure 6 and Figure 7 ), the upper front avoidance portion 25 and the lower front avoidance portion 35 are formed so that the area of the cross section of the lower front avoidance portion 35 is smaller than the area of the cross section of the upper front avoidance portion 25.

[0165] Here, the area of the cross section of the upper front avoidance portion 25 is the area of a portion enclosed by the inclined surface of the upper front avoidance portion 25, a line extending from the first boundary portion 28a in a direction orthogonal to the vertical direction, and a line extending from the second boundary portion 28b in the vertical direction, when observing the cross section ( Figure 6 ). The area of the cross section of the lower front avoidance portion 35 is the area of a portion enclosed by the inclined surface of the lower front avoidance portion 35, a line extending from the first boundary portion 38a in a direction orthogonal to the vertical direction, and a line extending from the second boundary portion 38b in the vertical direction, when observing the cross section ( Figure 7the area of the portion surrounded by the inclined surface of the lower front avoidance portion 35, a line extending from the first boundary portion 38a in a direction orthogonal to the vertical direction, and a line extending from the second boundary portion 38b in the vertical direction.

[0166] In addition, in the present embodiment 1, when observing the above cross section (a) of the upper front avoidance portion 25, Figure 6 the angle between the tangent line touching the inclined surface at the midpoint 25c in the vertical direction of the upper front avoidance portion 25 and the direction orthogonal to the vertical direction is defined as the upper avoidance inclined angle θ1. When observing the above cross section (a) of the lower front avoidance portion 35, Figure 7 the angle between the tangent line touching the inclined surface at the midpoint 35d in the vertical direction of the lower front avoidance portion 35 and the direction orthogonal to the vertical direction is defined as the lower avoidance inclined angle θ2. In the case of the present embodiment 1, the tangent line touching the inclined surface at the midpoint in the vertical direction of the lower front avoidance portion 35 is a straight line at the same position as the first lower front inclined surface 35a. In this case, the upper front avoidance portion 25 and the lower front avoidance portion 35 are formed such that the lower avoidance inclined angle θ2 is smaller than the upper avoidance inclined angle θ1.

[0167] In the upper front avoidance portion 25 and the lower front avoidance portion 35, as described above, the cross-sectional area of the lower front avoidance portion 35 is made smaller than the cross-sectional area of the upper front avoidance portion 25, and / or the lower avoidance inclined angle θ2 is made smaller than the upper avoidance inclined angle θ1, whereby, for example, the same effects as in the case where the above maximum dimension T2 is made smaller than the above maximum dimension T1 can be obtained. That is, in the case shown in FIG. 10, Figure 11 the grinding of the slider chain 6 by the lower flange portion 13 of the slider main body 10 can be effectively prevented or suppressed. In addition, the slider tape of the slider can be made difficult to be damaged by the lower flange portion 13 of the slider main body 10.

[0168] In the present embodiment 1, the maximum dimension T2 in the thickness direction in the lower front avoidance portion 35 is set to be 15% or more and 65% or less of the maximum dimension in the thickness direction in the lower flange portion 30, and is preferably set to be 25% or more and 50% or less of the maximum dimension in the thickness direction in the lower flange portion 30. By making the above maximum dimension T2 of the lower front avoidance portion 35 15% or more of the maximum dimension in the thickness direction in the lower flange portion 30, when the slider 1 is caused to slide with respect to the chain row 5 of the slider as described later, the slider chain 6 can be made difficult to be ground by the shoulder port side end portion of the lower flange inner surface 31.

[0169] By making the aforementioned maximum dimension T2 of the lower-side front avoidance portion 35 be 65% or less of the maximum dimension in the thickness direction in the lower flap 30, the strength of the shoulder-port side end portion of the lower flap 30 can be appropriately ensured. Also, for example, when the puller 1 is caused to slide with respect to the fastener stringer 5 in the direction of engagement of the fastener teeth (forward direction), the fastener teeth 6 can be prevented from being hooked by the lower-side front avoidance portion 35, so that the fastener teeth 6 easily enter the fastener tooth guide path of the puller main body 10 in an appropriate posture.

[0170] The lower-side front avoidance portion 35 is smoothly continuous with respect to the lower-side main plane 34 of the lower flap 30, and no step or unevenness is provided between the lower-side front avoidance portion 35 and the lower-side main plane 34. Between the lower-side front avoidance portion 35 and the lower-side main plane 34 in the lower flap inner surface 31, as shown in, for example, FIG. 6, a second boundary portion 38b that divides the lower-side front avoidance portion 35 and the lower-side main plane 34 is provided in a shape that is curved in a convex manner in a direction in which the fastener tooth guide path is entered from the shoulder port 18. Figure 5

[0171] In other words, the second boundary portion 38b is provided in a shape that is curved in a convex manner toward the coupling post 11 (particularly, toward the rear end portion of the coupling post 11) or in a shape that is curved in a convex manner toward a confluence portion at which the two fastener tooth guide paths on the left and right rear sides of the coupling post 11 converge into one. Thereby, the lower flap 30 can ensure an appropriate strength, and the lower-side front avoidance portion 35 can be stably provided in an appropriate size.

[0172] In the present embodiment 1, the second boundary portion 38b is provided separately from the coupling post 11. The second boundary portion 38b is provided in the coupling post 11 in a range in which the post gradually decreases in the front-rear direction.

[0173] The lower-side front avoidance portion 35 is provided with lower-side reference inclined portions 36 that are inclined in a manner that the interval in the up-down direction between the lower flap inner surface 31 and the central reference surface 50 gradually increases toward the shoulder port 18 on the left and right sides of the lower-side front avoidance portion 35. Therefore, the inclined surface of the lower-side front avoidance portion 35 is provided separately from the coupling post 11 and the lower flange portion 13, respectively. Also, the inclined surface of the lower-side front avoidance portion 35 has a portion that is recessed in a manner that it is distanced from the central reference surface 50 in the up-down direction with respect to the two adjacent lower-side reference inclined portions 36. The inclined surface of the lower-side front avoidance portion 35 is formed so as to be recessed downward compared to the two lower-side reference inclined portions 36 on the adjacent sides.

[0174] ​By the lower front avoidance portion 35 having the shape as described above and having a portion recessed with respect to the left and right lower reference inclined portions 36, for example, when the slide fastener element 6 moves in the element guide path of the slider main body 10 while being in contact with the lower flap inner surface 31 on one side, the element head portion 6a and / or the element leg portion 6b of the slide fastener element 6 can be brought into contact with at least one of the lower reference inclined portions 36. In addition, at least a portion of the slide fastener element 6 can be separated from the lower front avoidance portion 35.

[0175] Thus, when the slider 1 slides, the slide fastener element 6 can be moved forward or backward in the element guide path of the slider main body 10 while being held in a proper posture by the lower reference inclined portions 36. At the same time, at least a portion of the slide fastener element 6 can be brought into a non-contact state with respect to the lower front avoidance portion 35 of the lower flap 30. That is, a non-contact portion in which at least a portion of the slide fastener element 6 does not come into contact with the lower flap inner surface 31 can be formed. Furthermore, when the slider 1 slides, depending on the position and posture of the slide fastener element 6, there can be a case where a portion of the slide fastener element 6 partially comes into contact with the inclined surface of the lower front avoidance portion 35, but even in this case, at least a portion of the slide fastener element 6 does not come into contact with the inclined surface of the lower front avoidance portion 35.

[0176] The lower reference inclined portions 36 have a first lower reference inclined portion 36a provided between the lower front avoidance portion 35 and the connecting column 11, and a second lower reference inclined portion 36b provided between the lower front avoidance portion 35 and the lower flange portion 13. Each of the lower reference inclined portions 36 is inclined in such a manner that the vertical distance between the lower flap inner surface 31 and the central reference plane 50 gradually increases toward the shoulder opening 18. In other words, the lower reference inclined portions 36 are inclined in such a manner that the thickness dimension of the lower flap 30 gradually decreases toward the shoulder opening 18. The lower reference inclined portions 36 are formed so as to bulge upward or protrude upward closer to the upper flap 20 than the lower front avoidance portion 35. The lower reference inclined portions 36 are smoothly continuous with the lower main plane 34.

[0177] The lower rear avoidance portion 37 of the lower flap 30 is provided at an end portion on the rear opening 19 side in the portion on the lower flap inner surface 31 side. When a cross section orthogonal to the left-right direction of the lower flap 30 is observed (for example, refer to FIG. 9), the lower rear avoidance portion 37 has a shape inclined in such a manner that the vertical distance between the lower flap inner surface 31 and the central reference plane 50 gradually increases toward the rear opening 19. The inclined surface of the upper rear avoidance portion 27 and the inclined surface of the lower rear avoidance portion 37 have shapes symmetrical to each other in the vertical direction. Figure 9 Figure 10

[0178] ​​Therefore, the inclined surface of the lower rear avoidance portion 37 is formed by a curved surface that is curved in a convex manner bulging toward the upper flap 20 (or toward the chain guide path) when a cross section of the lower flap 30 orthogonal to the left-right direction is observed. In particular, in the present embodiment 1, the inclined surface of the lower rear avoidance portion 37 is formed as a curved surface that is convex in the entire front-rear direction of the lower rear avoidance portion 37.

[0179] In the lower flap 30 of the present embodiment 1, the inclined surface of the lower front avoidance portion 35 when a cross section obtained by cutting the lower flap 30 with the imaginary reference line 40 (see Figure 7 ) is observed, and the inclined surface of the lower rear avoidance portion 37 when a cross section obtained by cutting the lower flap 30 in a direction orthogonal to the left-right direction (see Figure 9 and Figure 10 ) are different from each other in shape.

[0180] Thus, whether when the non-engaged zipper chain 6 moves while contacting the shoulder port side end portion of the lower flap 30, or when the left and right zipper chains 6 move while contacting the rear port side end portion of the lower flap 30 in the engaged state, the zipper chain 6 is prevented or suppressed from being strongly rubbed by the lower flap 30 in different manners as in the case of the upper flap 20, so that the zipper chain 6 is difficult to be ground.

[0181] When the lower flap inner surface 31 is observed from the upper side (see Figure 5 ), the lower rear avoidance portion 37 is provided in a region from the boundary position 17 between the flange parallel portion 16a and the flange curved portion 16b in the left and right lower flange portions 13 to the rear port 19. That is, the boundary position between the upper main plane 24 in the upper flap inner surface 21 and the upper rear avoidance portion 27, and the boundary position between the lower main plane 34 in the lower flap inner surface 31 and the lower rear avoidance portion 37 are provided at the same position as the boundary position 17 of the upper flange portion 12 or the lower flange portion 13, or are provided on the rear port 19 side compared to the boundary position 17.

[0182] In addition, the lower rear avoidance portion 37 of the present embodiment 1 is continuously provided in a range of 70% or more to 100% or less of the chain engagement region provided between the rear port 19 and the boundary position 17 of the lower flange portion 13 in the front-rear direction. Thus, the zipper chain 6 can be effectively prevented or suppressed from being strongly rubbed by the lower flap 30. In the present embodiment 1, the lower rear avoidance portion 37 is preferably continuously formed from the position of the rear port 19 of the puller main body 10 to the boundary position 17 between the flange parallel portion 16a and the flange curved portion 16b in the front-rear direction.

[0183] In addition, the upper rear avoidance portion 27 and the lower rear avoidance portion 37 are provided in a range of 100% or less of the range of the fastener engagement region, and when the puller 1 is caused to slide in the forward direction (the engagement direction of the fasteners) along the fastener rows 5, the left and right fasteners 6 can be engaged in the region of the fastener guide path of the puller main body 10 that is on the front side of the upper rear avoidance portion 27 and the lower rear avoidance portion 37 (i.e., the region in which the flat upper main plane 24 and the lower main plane 34 are formed). Thus, the position and posture of the fasteners 6 can be appropriately restricted by the upper main plane 24 and the lower main plane 34 of the puller main body 10, and the left and right fasteners 6 can be smoothly and stably engaged.

[0184] When the puller 1 of the present embodiment 1 is installed in the fastener rows 5 of the slide fastener and caused to slide, for example Figure 9 and Figure 10 As shown in the case of the lower rear avoidance portion 37 in the present embodiment 1, the upper rear avoidance portion 27 and the lower rear avoidance portion 37 of the puller main body 10 are formed so that one of the upper rear avoidance portion 27 and the lower rear avoidance portion 37 can be brought into contact with the left and right fastener rows 5 in the state of mutual engagement.

[0185] The upper rear avoidance portion 27 and the lower rear avoidance portion 37 are formed so that, when the left and right fastener rows 5 in mutual engagement come into contact with one of the upper rear avoidance portion 27 and the lower rear avoidance portion 37, the first contact portion 46 that comes into contact with one of the fasteners 6 of the one fastener row 5 (e.g., the right fastener row 5) that forms the engagement, and the second contact portion 47 that comes into contact with one of the fasteners 6 of the other fastener row 5 (e.g., the left fastener row 5) that forms the engagement are always present.

[0186] In this case, the fastener 6 that comes into contact with the first contact portion 46 and the upper rear avoidance portion 27 or the lower rear avoidance portion 37, and the fastener 6 that comes into contact with the second contact portion 47 and the upper rear avoidance portion 27 or the lower rear avoidance portion 37 are provided in different fastener tapes, and are engaged with each other. That is, the upper rear avoidance portion 27 and the lower rear avoidance portion 37 are formed so that, when the puller 1 is caused to slide, the fasteners 6 of both the left and right fastener tapes can be contacted one by one, and in addition, a situation in which only the fasteners 6 of one of the left and right fastener tapes come into contact with the upper rear avoidance portion 27 or the lower rear avoidance portion 37 does not occur.

[0187] In addition, in the slide fastener of the present embodiment 1, the fasteners 6 are formed so that the fastener leg portions 6b are larger than the fastener head portions 6a in the up-down direction (the fastener width direction). Thus, in the first contact portion 46 and the second contact portion 47 of the upper rear avoidance portion 27 or the lower rear avoidance portion 37 of the puller main body 10, the fastener leg portions 6b of the fasteners 6 come into contact with the inclined surfaces of the upper rear avoidance portion 27 or the lower rear avoidance portion 37.

[0188] In the upper rear avoidance portion 27 of the present embodiment 1, the surface of the upper rear avoidance portion 27 sandwiched between the first contact portion 46 and the second contact portion 47 is always formed by a continuous convex curved surface. Also with respect to the lower rear avoidance portion 37, similarly to the upper rear avoidance portion 27, the surface of the lower rear avoidance portion 37 sandwiched between the first contact portion 46 and the second contact portion 47 is always formed by a continuous convex curved surface.

[0189] For example, in a case where the puller body 10 is being slid with being pulled downward or upward with respect to the fastener stringers 5 based on a slide operation of the pull tab, it is considered that the fastener chain 6 which is in contact with the upper rear avoidance portion 27 or the lower rear avoidance portion 37 of the puller body 10 is moved forward or rearward with being strongly pressed against the upper rear avoidance portion 27 or the lower rear avoidance portion 37.

[0190] In this case, in the present embodiment 1, the upper rear avoidance portion 27 or the lower rear avoidance portion 37 of the puller body 10 is in contact with and supports one fastener chain 6 of one of the fastener stringers 5 and one fastener chain 6 of the other fastener stringer 5 at the first contact portion 46 and the second contact portion 47 which are on the inclined surface formed as a curved surface. Therefore, the left and right two fastener chains 6 are always supported on the entire inclined surface of the upper rear avoidance portion 27 or the lower rear avoidance portion 37.

[0191] Thus, when the puller body 10 is being slid with being pulled downward or upward with respect to the fastener stringers 5, it is possible to disperse the force received by the fastener stringers 5 from the upper rear avoidance portion 27 or the lower rear avoidance portion 37 of the puller body 10 to the two fastener chains 6. That is, it is possible to reduce the force applied to each fastener chain 6. Therefore, it is possible to effectively suppress or prevent the fastener chain 6 from being ground due to the contact between the fastener chain 6 and the upper rear avoidance portion 27 or the lower rear avoidance portion 37.

[0192] In addition, in the present embodiment 1, the dimension D1 in the front-rear direction of the upper rear avoidance portion 27 or the lower rear avoidance portion 37 is set to be larger than the interval D2 between the fastener chains 6 provided on one fastener chain tape (one fastener stringer 5). Here, the dimension D1 in the front-rear direction of the upper rear avoidance portion 27 (or the lower rear avoidance portion 37) means, for example Figure 10 the dimension in the front-rear direction from the boundary position 17 of the upper rear avoidance portion 27 and the upper main plane 24 (or the boundary position 17 of the lower rear avoidance portion 37 and the lower main plane 34) to the rear end position of the upper rear avoidance portion 27 (or the lower rear avoidance portion 37).

[0193] The interval D2 between the fastener chains 6 provided on one fastener chain tape means, for example Figure 8As shown, in the two slide fastener elements 6 arranged adjacent to each other in the front-rear direction in one slide fastener tape, the size in the front-rear direction of the space portion formed between the element leg 6b of one slide fastener element 6 and the element leg 6b of the other slide fastener element 6.

[0194] As shown, the size D1 in the front-rear direction of the upper rear avoidance portion 27 or the lower rear avoidance portion 37 is set to be larger than the interval D2 between the slide fastener elements 6 provided on one slide fastener tape, as shown in Figure 9 and Figure 10 As shown, it is possible to make one slide fastener element 6 of one slide fastener element row 5 and one slide fastener element 6 of the other slide fastener element row 5 always stably come into contact with the upper rear avoidance portion 27 or the lower rear avoidance portion 37.

[0195] Further, in the slider main body 10 of the present embodiment 1, the rear end edge of the upper wing plate 20 is formed in a convex shape curved in a manner bulging toward the rear side, when the upper wing plate 20 is viewed from the upper side or the lower side (for example, refer to Figure 4 ). Therefore, in the case of the present embodiment 1, the size in the front-rear direction of the above-described upper rear avoidance portion 27 differs depending on the position in the left-right direction of the upper rear avoidance portion 27. Also in the lower wing plate 30, as with the upper wing plate 20, the rear end edge of the lower wing plate 30 is formed in a convex shape curved in a manner bulging toward the rear side, when the lower wing plate 30 is viewed from the upper side or the lower side (for example, refer to Figure 5 ).

[0196] In this case, in the slider main body 10 of the present embodiment 1, the size D1 in the front-rear direction at the central portion in the left-right direction of the upper rear avoidance portion 27 (i.e., the maximum size) is set to be larger than the interval D2 between the slide fastener elements 6 provided on one slide fastener tape. It is preferable that the size in the front-rear direction at the side edge portion in the left-right direction of the upper rear avoidance portion 27 (i.e., the minimum size) be set to be larger than the interval D2 between the slide fastener elements 6 provided on one slide fastener tape. Also, the size D1 in the front-rear direction of the lower rear avoidance portion 37 is set in the same manner as in the case of the upper rear avoidance portion 27.

[0197] The slider 1 of the present embodiment 1 having the above-described slider main body 10 forms a slide fastener by being attached to the slide fastener element rows 5 of the left and right slide fastener tapes in a slidable manner. In this slide fastener, as shown in Figure 8 , the left and right slide fastener element rows 5 are interposed in the Y-shaped element guide path formed in the slider main body 10.

[0198] Thus, by pulling a pull tab (not shown) of the slider 1, for example, the slider main body 10 is caused to slide in the front direction along the left and right slide fastener element rows 5, and the slide fastener elements 6 of the left and right slide fastener element rows 5 are caused to engage in the Y-shaped element guide path formed in the slider main body 10 in sequence.

[0199] In addition, for example, in a case where the left and right fastener rows 5 are formed straight along the front-rear direction (in other words, in a case where the fastener rows 5 are not curved in the up-down direction), by the operation of the pull tab, the puller main body 10 is pulled toward the front, whereby the puller main body 10 easily assumes a forward-leaning posture in which the rear end portion of the puller main body 10 is lifted upward more than the front end portion of the puller main body 10 with respect to the fastener rows 5. Therefore, the zipper teeth 6 forming the fastener rows 5 easily come into contact with the upper wing plate 20 on the shoulder portion 18 side of the puller main body 10 and easily come into contact with the lower wing plate 30 on the rear portion 19 side of the puller main body 10 with respect to the forward-leaning posture of the puller main body 10.

[0200] In this case, in the puller 1 of the present embodiment 1, the upper front avoidance portion 25 is provided at the left and right shoulder portion side end portions of the upper wing plate 20. Therefore, when the zipper teeth 6 are located at the shoulder portion side end portions of the upper wing plate 20 at the time of sliding of the puller 1, as described above, at least a part of the zipper teeth 6 can be made not to come into contact with the upper front avoidance portion 25, and thus the zipper teeth 6 can be made difficult to be abraded by the upper wing plate 20.

[0201] In addition, the lower rear avoidance portion 37 is provided at the rear portion side end portion of the lower wing plate 30. Therefore, at the time of sliding of the puller 1, even if the zipper teeth 6 come into contact with the rear portion side end portion of the lower wing plate 30, the force with which the zipper teeth 6 are pressed against the rear portion side end portion of the lower wing plate 30 can be weakened by the inclined surface of the lower rear avoidance portion 37. Also, since two zipper teeth 6 are always made to come into contact with the lower rear avoidance portion 37, the force received by each of the zipper teeth 6 from the rear portion side end portion (the lower rear avoidance portion 37) can be dispersed. Thus, the zipper teeth 6 can be effectively prevented or suppressed from being abraded by being strongly rubbed by the lower rear avoidance portion 37.

[0202] In addition, in a case where the left and right fastener rows 5 are formed straight as described above, when the puller main body 10 is pulled toward the rear by the operation of the pull tab, the puller main body 10 easily assumes a backward-leaning posture in which the front end portion of the puller main body 10 is lifted upward more than the rear end portion of the puller main body 10 with respect to the fastener rows 5. Therefore, the zipper teeth 6 easily come into contact with the lower wing plate 30 on the shoulder portion 18 side of the puller main body 10 and easily come into contact with the upper wing plate 20 on the rear portion 19 side of the puller main body 10 with respect to the backward-leaning posture of the puller main body 10.

[0203] In this case, in the slider 1 of the present embodiment 1, the lower front avoiding portion 35 is provided at the right and left shoulder opening side end portions of the lower flap 30, and the upper rear avoiding portion 27 is provided at the rear opening side end portion of the upper flap 20. Therefore, when the slider 1 is slid in the rearward direction, even if the fastener elements 6 come into contact with the upper flap 20 and the lower flap 30, as in the case when the slider 1 is slid in the forward direction, at least a part of the fastener elements 6 can be made not to come into contact with the lower front avoiding portion 35, and thus the fastener elements 6 can be made difficult to be abraded by the lower flap 30. In addition, the fastener elements 6 can be effectively prevented or inhibited from being abraded by being strongly rubbed by the upper rear avoiding portion 27.

[0204] In addition, for example, in the case where the fastener is used for a bag or a suitcase or the like, the fastener element rows 5 of the right and left fastener tapes are sometimes curved in a convex shape in a manner of bulging upward in the upward and downward directions, as shown in, for example, Figure 11 In this case, regardless of whether the slider 1 is slid in the forward direction by pulling the pull tab (not shown) of the slider 1 or is slid in the rearward direction, the fastener elements 6 easily come into contact with the lower flap 30 at both the shoulder opening side end portion and the rear opening side end portion of the slider main body 10.

[0205] In this case, regardless of whether the slider 1 is slid in the forward direction by pulling the pull tab (not shown) of the slider 1 or is slid in the rearward direction, the fastener elements 6 easily come into contact with the lower flap 30 at both the shoulder opening side end portion and the rear opening side end portion of the slider main body 10.

[0206] Therefore, the slider 1 of the present embodiment 1 can make it difficult to cause the fastener elements 6 to be abraded due to the contact of the fastener elements 6 with the shoulder opening side end portion and the rear opening side end portion of the slider main body 10 even if the sliding operation of sliding the slider 1 along the fastener element rows 5 of the fastener is repeatedly performed. Thus, it can be made difficult to cause the appearance quality of the fastener to be reduced due to the exposure of the metal portion inside the fastener elements 6.

[0207] In addition, the present inventors have repeatedly performed various experiments and researches on the slider 1 in which the upper front avoiding portion 25 and the lower front avoiding portion 35 are provided at the slider main body 10, and as a result, the following has been clarified. That is, when the slider 1 provided with the upper front avoiding portion 25 and the lower front avoiding portion 35 is slid with respect to the fastener element rows 5 curved in a shape bent in the upward and downward directions as shown in, for example, Figure 11

[0208] ​In this case, it is clarified that the position of the slider chain 6 is lowered due to the provision of the lower front avoiding portion 35, whereby the slide fastener tape in which a plurality of slider chains 6 are installed is pulled by the slider chain 6, and as a result thereof, the slide fastener tape is strongly pressed against the left and right lower flange portions 13 of the slider main body 10, so that the slide fastener tape is easily damaged by the lower flange portions 13 at the time of sliding of the slider 1.

[0209] Further, at the time of sliding the slider 1 in the direction of engaging the chain teeth, the slider 1 is strongly pulled by the pull tab compared to the time of sliding the slider 1 in the direction of separating the chain teeth, so that the slider chain 6 has a tendency to easily enter the left and right lower side front avoiding portions 35 of the lower wing plate 30. Therefore, at the time of sliding the slider 1 in the direction of engaging the chain teeth, the slide fastener tape is more strongly pressed against the left and right lower flange portions 13, so that it is also conceivable that there is a possibility that such a bad situation that the slide fastener tape is partially broken occurs.

[0210] To such a problem, in the slider 1 of the present embodiment 1, as described above, the depth 54 of the lower side front avoiding portion 35 with respect to the central reference surface 50 is set to be smaller than the depth 53 of the upper side front avoiding portion 25 with respect to the central reference surface 50. Further, the maximum dimension T2 in the thickness direction in the lower side front avoiding portion 35 is made smaller than the maximum dimension T1 in the thickness direction in the upper side front avoiding portion 25. Thereby, even if the lower side front avoiding portion 35 is provided, it is possible to reduce the magnitude of the relative lowering of the position of the slider chain 6 with respect to the lower wing plate 30. As a result thereof, it is possible to weaken the force by which the slide fastener tape is pressed against the left and right lower flange portions 13 of the slider main body 10, so that it is possible to prevent or suppress the slider chain 6 from being abraded by the lower wing plate 30 and to prevent or suppress the slide fastener tape from being damaged by the lower flange portions 13 at the time of sliding of the slider 1.

[0211] Embodiment 2

[0212] Figure 12 is a cross-sectional view of the upper wing plate of the slider of the present embodiment 2 as viewed from the lower side. Figure 13 is a cross-sectional view of the lower wing plate of the slider of the present embodiment 2 as viewed from the upper side.

[0213] The slider 2 of the present embodiment 2 is formed of two components of a slider main body 10a and a pull tab not shown. The slider main body 10a of the present embodiment 2 has an upper wing plate 20a, a lower wing plate 30a, a connecting column 11 which connects between the front end portion of the upper wing plate 20a and the front end portion of the lower wing plate 30a, left and right upper flange portions 12 which are arranged at the left and right side edge portions of the upper wing plate 20a, left and right lower flange portions 13 which are arranged at the left and right side edge portions of the lower wing plate 30a, and a pull tab mounting portion 14 which stands up from the upper surface of the upper wing plate 20a.

[0214] In the slider main body 10a of the present embodiment 2, as described above, Figure 12 and Figure 13As shown, the first accommodation step difference portion 29 is provided on the upper flap inner surface 21a of the upper flap 20a, and the second accommodation step difference portion 39 is provided on the lower flap inner surface 31a of the lower flap 30a.

[0215] Further, the slider main body 10a of this embodiment 2 is formed substantially identically to the slider main body 10 of the aforementioned embodiment 1, except that the first accommodation step difference portion 29 and the second accommodation step difference portion 39 are provided. Therefore, in this embodiment 2, the first accommodation step difference portion 29 of the upper flap 20a and the second accommodation step difference portion 39 of the lower flap 30a are mainly described, and their detailed description is omitted by using the same reference numerals to indicate the substantially identical portions and sites as the slider main body 10 of the aforementioned embodiment 1.

[0216] The upper flap inner surface 21a of the upper flap 20a in this embodiment 2 has an upper side main plane 24a formed in parallel with the front-rear direction, a left and right pair of upper side front avoidance portions 25 provided on the end portions of the left and right shoulder apertures 18 sides in the upper flap inner surface 21a, an upper side reference inclined portion 26 provided on both sides of each upper side front avoidance portion 25, an upper side rear avoidance portion 27 provided on the rear end portion of the upper flap inner surface 21a, and a left and right pair of first accommodation step difference portions 29 provided on the inner side of the chain guide path compared to the upper side front avoidance portions 25.

[0217] The left and right upper side front avoidance portions 25, the plurality of upper side reference inclined portions 26, and the upper side rear avoidance portion 27 in the upper flap inner surface 21a of this embodiment 2 are formed substantially identically to the upper side front avoidance portions 25, the upper side reference inclined portions 26, and the upper side rear avoidance portion 27 provided on the upper flap inner surface 21 of the embodiment 1. The upper side main plane 24a of this embodiment 2 is formed to have a smaller area than the upper side main plane 24 of the embodiment 1 by the provision of the left and right first accommodation step difference portions 29.

[0218] The left and right first accommodation step difference portions 29 each have a first connecting portion 29b and a flat first bottom surface portion 29a.

[0219] The first bottom surface portion 29a of the first accommodation step difference portion 29 is formed by a plane orthogonal to the up-down direction. The first bottom surface portion 29a is disposed on the inner side of the chain guide path compared to the upper side front avoidance portion 25, and is formed adjacent to the upper side front avoidance portion 25. The first bottom surface portion 29a is formed smoothly continuous with the upper side front avoidance portion 25, and is formed recessed with respect to the upper side main plane 24a. The first connecting portion 29b of the first accommodation step difference portion 29 is formed by an inclined surface disposed between the first bottom surface portion 29a and the upper side main plane 24a, and is formed smoothly continuous with the first bottom surface portion 29a and the upper side main plane 24a.

[0220] The lower flap inner surface 31a of the lower flap 30a has a lower main plane 34a formed parallel to the front-rear direction, a left and right pair of lower front avoidance portions 35 provided at end portions of the left and right shoulder ports 18 side in the lower flap inner surface 31a, a lower reference inclined portion 36 provided at both sides of each of the lower front avoidance portions 35, a lower rear avoidance portion 37 provided at a rear end portion of the lower flap inner surface 31a, and a left and right pair of second accommodation layer difference portions 39 provided at inner sides of the chain guide paths compared to the lower front avoidance portions 35.

[0221] The left and right lower front avoidance portions 35, the plurality of lower reference inclined portions 36, and the lower rear avoidance portion 37 in the lower flap inner surface 31a of this embodiment 2 are respectively substantially similarly formed to the lower front avoidance portions 35, the lower reference inclined portions 36, and the lower rear avoidance portion 37 provided in the lower flap inner surface 31 of the embodiment 1. The lower main plane 34a of this embodiment 2 is formed to be smaller in area than the lower main plane 34 of the embodiment 1 by the provision of the left and right second accommodation layer difference portions 39.

[0222] The left and right second accommodation layer difference portions 39 each have a second connecting portion 39b and a flat second bottom surface portion 39a.

[0223] The second bottom surface portion 39a of the second accommodation layer difference portion 39 is formed by a plane orthogonal to the up-down direction. The second bottom surface portion 39a is disposed at an inner side of the chain guide path compared to the lower front avoidance portion 35, and is formed adjacent to the lower front avoidance portion 35. The second bottom surface portion 39a is formed smoothly continuous to the lower front avoidance portion 35, and is formed recessed with respect to the lower main plane 34a. The second connecting portion 39b of the second accommodation layer difference portion 39 is formed by an inclined surface disposed between the second bottom surface portion 39a and the lower main plane 34a, and is formed smoothly continuous to the second bottom surface portion 39a and the lower main plane 34a.

[0224] For example, in a zipper, in order to prevent a puller mounted to a chain row from falling off from a front end portion of the chain row, there is a case where a left and right pair of stoppers (not shown) for abutting the puller are provided adjacent to the front end portions of the left and right chain rows.

[0225] The puller 2 of this embodiment 2 is suitable for use in the zipper described above that is provided with the left and right stoppers (not shown). By mounting the puller 2 of this embodiment 2 to the chain row 5 of the zipper provided with the left and right stoppers, it is possible to respectively insert and accommodate the left and right stoppers in the first accommodation layer difference portion 29 and the second accommodation layer difference portion 39 provided in the puller main body 10a when the puller 2 is slid to abut against the left and right stoppers.

[0226] Thus, in the slide fastener in which the puller 2 of the present embodiment 2 is installed, the puller 2 of the present embodiment 2 can be brought into contact with the left and right stoppers to stop the sliding of the puller 2, and thus the puller 2 can be prevented from falling off the chain stile row 5. In addition, when the puller 2 of the present embodiment 2 is brought into abutment with the left and right stoppers, the left and right stoppers can be accommodated in the first accommodation step difference portion 29 and the second accommodation step difference portion 39 provided in the puller main body 10a, and thus at least a part of the left and right stoppers can be hidden in the puller main body 10a and cannot be seen. Thus, the appearance quality of the slide fastener when the slide fastener is closed can be improved.

[0227] Further, the puller main body 10a of the present embodiment 2 is formed substantially similarly to the puller main body 10 of the aforementioned embodiment 1 except that the first accommodation step difference portion 29 and the second accommodation step difference portion 39 are provided. Thus, the puller 2 of the present embodiment 2 can achieve the same effects as the puller 1 of the aforementioned embodiment 1.

[0228] That is, even if the sliding operation of the puller 2 of the present embodiment 2 is repeated, the slide fastener chain stile 6 is difficult to be abraded. Thus, by using the puller 2 of the present embodiment 2, it is difficult to cause the appearance quality of the slide fastener to be reduced due to the exposure of the metal portion inside the slide fastener chain stile 6.

[0229] Note that the present application is not limited to the above-described embodiments, and various modifications can be made as long as the same structure as the present application is substantially the same and the same effects are achieved.

[0230] For example, in the aforementioned embodiment 1 and embodiment 2, the rear avoidance portion 27, 37 is formed in both the upper wing plate 20, 20a and the lower wing plate 30, 30a of the puller main body 10, 10a. However, in the present application, the puller main body can be formed by providing the rear avoidance portion in only either one of the upper wing plate and the lower wing plate, or the puller main body can be formed by not providing the rear avoidance portion in the upper wing plate and the lower wing plate.

[0231] In addition, in the embodiment 1 and embodiment 2, the puller 1, 2 is described with respect to the case where the puller is used for the slide fastener (metal slide fastener) having a plurality of metal slide fastener chain stiles 6. However, the puller of the present application can be installed in the slide fastener (i.e., slide fastener other than the metal slide fastener) of a plurality of slide fastener chain stiles other than the metal slide fastener chain stiles.

Claims

1. A slider which is a slider for a slide fastener having a slider main body (10, 10a) provided with an upper plate (20, 20a), a lower plate (30, 30a) disposed apart from the upper plate (20, 20a), a connecting column (11) connecting between a front end portion of the upper plate (20, 20a) and a front end portion of the lower plate (30, 30a), a pair of shoulder ports (18) opened on both sides of the connecting column (11), a rear port (19) opened at a rear end portion of the slider main body (10, 10a), and a chain guide path formed between the upper plate (20, 20a) and the lower plate (30, 30a) and communicating the shoulder ports (18) and the rear port (19), characterized in that the upper plate (20, 20a) is provided with a pair of upper front avoidance portions (25) provided on an inner surface portion of the upper plate (20, 20a) opposite to the lower plate (30, 30a) and disposed at end portions on both sides of the shoulder ports (18), each of the upper front avoidance portions (25) has an inclined surface in which a gap (51) in a vertical direction between the upper front avoidance portion (25) and a center reference surface (50) defined by an imaginary plane passing through a center position in the vertical direction of the connecting column (11) and orthogonal to the vertical direction gradually increases toward the shoulder port (18), the lower plate (30, 30a) is provided with a pair of lower front avoidance portions (35) provided on an inner surface portion of the lower plate (30, 30a) opposite to the upper plate (20, 20a) and disposed at end portions on both sides of the shoulder ports (18), each of the lower front avoidance portions (35) has an inclined surface in which a gap (52) in the vertical direction between the lower front avoidance portion (35) and the center reference surface (50) gradually increases toward the shoulder port (18), a depth (54) of the lower front avoidance portion (35) with respect to the center reference surface (50) is smaller than a depth (53) of the upper front avoidance portion (25) with respect to the center reference surface (50).

2. The slider according to claim 1, characterized in that a maximum dimension (T2) in the vertical direction of the lower front avoidance portion (35) is smaller than a maximum dimension (Tl) in the vertical direction of the upper front avoidance portion (25).

3. The slider according to claim 1, characterized in that the slider main body (10, 10a) is provided with left and right upper flange portions (12) extending from left and right side edge portions of the upper plate (20, 20a) toward the lower plate (30, 30a), and left and right lower flange portions (13) extending from left and right side edge portions of the lower plate (30, 30a) toward the upper plate (20, 20a). ​ ​ ​ ​ ​ ​ ​ The upper wing plate (20, 20a) has a first upper reference inclined portion (26a) provided between the upper front avoidance portion (25) and the connecting column (11), and a second upper reference inclined portion (26b) provided between the upper front avoidance portion (25) and the upper flange portion (12), The first upper reference inclined portion (26a) and the second upper reference inclined portion (26b) each have an inclined surface inclined in such a manner that the interval in the up-down direction between the first upper reference inclined portion (26a) or the second upper reference inclined portion (26b) and the center reference surface (50) gradually increases toward the shoulder opening (18), The upper front avoidance portion (25) has a portion recessed from the center reference surface (50) toward the up-down direction with respect to the first upper reference inclined portion (26a) and the second upper reference inclined portion (26b), The lower wing plate (30, 30a) has a first lower reference inclined portion (36a) provided between the lower front avoidance portion (35) and the connecting column (11), and a second lower reference inclined portion (36b) provided between the lower front avoidance portion (35) and the lower flange portion (13), The first lower reference inclined portion (36a) and the second lower reference inclined portion (36b) each have an inclined surface inclined in such a manner that the interval in the up-down direction between the first lower reference inclined portion (36a) or the second lower reference inclined portion (36b) and the center reference surface (50) gradually increases toward the shoulder opening (18), The lower front avoidance portion (35) has a portion recessed from the center reference surface (50) toward the up-down direction with respect to the first lower reference inclined portion (36a) and the second lower reference inclined portion (36b).

4. The puller according to claim 1, wherein The inclined surface of the upper front avoidance portion (25) and the inclined surface of the lower front avoidance portion (35) have mutually different shapes in a cross-sectional view of the upper wing plate (20, 20a) and the lower wing plate (30, 30a) along the up-down direction.

5. The puller according to claim 1, wherein The inclined surface of the upper front avoidance portion (25) has a first upper front inclined surface (25a) formed by a curved surface curved in such a manner as to bulge toward the lower wing plate (30, 30a) in a convex manner, and a second upper front inclined surface (25b) formed by a straight planar surface, in a cross-sectional view of the upper wing plate (20, 20a) along the up-down direction and along the direction in which the inclined surface is inclined. The inclined surface of the lower front avoidance portion (35) has a first lower front inclined surface (35a) formed by a straight planar surface, a second lower front inclined surface (35b) formed by a curved surface curved in a convex shape bulging toward the upper panel (20, 20a), and a third lower front inclined surface (35c) formed by a curved surface curved in a concave shape away from the upper panel (20, 20a), in cross-sectional observation along the vertical direction and along a direction in which the inclined surface is inclined.

6. The puller according to claim 1, wherein the upper panel (20, 20a) has an upper main planar surface (24, 24a) formed toward the chain guide path and in parallel with the front-rear direction, a boundary portion (28) of the upper front avoidance portion (25) and the upper main planar surface (24, 24a) has a shape curved in a convex shape bulging toward a direction into the chain guide path from the shoulder port (18), the lower panel (30, 30a) has a lower main planar surface (34, 34a) formed toward the chain guide path and in parallel with the front-rear direction, a boundary portion (38) of the lower front avoidance portion (35) and the lower main planar surface (34, 34a) has a shape curved in a convex shape bulging toward a direction into the chain guide path from the shoulder port (18).

7. The puller according to claim 1, wherein at least one of the upper panel (20, 20a) and the lower panel (30, 30a) has a rear avoidance portion (27, 37) inclined so that a vertical direction interval between an inner surface (21, 21a, 31, 31a) of the upper panel (20, 20a) or the lower panel (30, 30a) and the center reference plane (50) gradually decreases toward the rear port (19).

8. The puller according to claim 7, wherein the rear avoidance portion (27, 37) has: an upper rear avoidance portion (27) provided to the upper panel (20, 20a); and a lower rear avoidance portion (37) provided to the lower panel (30, 30a), the upper rear avoidance portion (27) and the lower rear avoidance portion (37) have shapes symmetrical vertically.

9. The puller according to claim 7, wherein the puller main body (10, 10a) has at least one of left and right upper flange portions (12) protruding from left and right side edge portions of the upper panel (20, 20a) toward the lower panel (30, 30a), and left and right lower flange portions (13) protruding from left and right side edge portions of the lower panel (30, 30a) toward the upper panel (20, 20a). At least one of the upper flange portions (12) and the lower flange portions (13) has: a flange parallel portion (16a) in which the intervals between the left and right upper flange portions (12) or the left and right lower flange portions (13) are constant; and a flange curved portion (16b) in which the intervals between the left and right upper flange portions (12) or the left and right lower flange portions (13) gradually increase toward the front, In a case where a region in a front-rear direction between the rear opening (19) and a boundary position (17) between the flange parallel portion (16a) and the flange curved portion (16b) is defined as a fastener engagement region, the rear avoidance portion (27, 37) is continuously provided in a range of 70% or more of the fastener engagement region in the front-rear direction.

10. The puller according to claim 7, wherein The rear avoidance portion (27, 37) is formed into a curved surface curved in a convex shape toward the fastener guide path in a cross-sectional view orthogonal to the left-right direction.

11. The puller according to claim 7, wherein A shape of the inclined surface of the upper-side front avoidance portion (25) when the upper-side front avoidance portion (25) is observed in a cross section of the upper wing plate (20, 20a) along the up-down direction and along a direction in which the inclined surface is inclined, and a shape of an inclined surface of the rear avoidance portion (27) when the rear avoidance portion (27) of the upper wing plate (20, 20a) is observed in a cross section orthogonal to the left-right direction are different from each other, A shape of the inclined surface of the lower-side front avoidance portion (35) when the lower-side front avoidance portion (35) is observed in a cross section of the lower wing plate (30, 30a) along the up-down direction and along a direction in which the inclined surface is inclined, and a shape of an inclined surface of the rear avoidance portion (37) when the rear avoidance portion (37) of the lower wing plate (30, 30a) is observed in a cross section orthogonal to the left-right direction are different from each other.

12. The puller according to claim 7, wherein The rear avoidance portion (27, 37) is formed so as to be capable of contacting the left and right fastener rows (5) in a state in which the fastener rows (5) engage with each other when the puller (1, 2) is attached to the fastener rows (5) of a pair of fastener tapes, The rear avoidance portion (27, 37) always has a first contact portion (46) that contacts one of the fastener elements (6) of the one of the fastener rows (5) that forms the engagement, and a second contact portion (47) that contacts one of the fastener elements (6) of the other of the fastener rows (5) that forms the engagement, when the left and right fastener rows (5) contact each other, A surface between the first contact portion (46) and the second contact portion (47) of the rear avoidance portion (27, 37) is formed into a curved surface that is convex.

13. The puller according to claim 7, wherein The dimension (D1) in the front-rear direction of the rear avoidance portion (27, 37) is larger than the interval (D2) between the fasteners (6) arranged adjacent to each other in the fastener row (5) of one of the fastener rows (5) when the slider (1, 2) is attached to the fastener rows (5) of the pair of fastener chains.

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