HK1159441B - Slider for slide fastener - Google Patents

Description

Slider for slide fastener

Technical Field

The present invention relates to a slider for a slide fastener provided with an automatic stop mechanism using a stop pawl, and more particularly, to a slider for a slide fastener capable of protecting the operation of a stop pawl and stably maintaining the sliding characteristics and the automatic stop mechanism for a long period of time.

Background

Conventionally, as a slider used for a slide fastener, there is known a slider with an automatic stop mechanism in which, when an operation of a slider is released after opening and closing the slide fastener, a stop pawl body attached to the inside of the slider automatically operates to hold a stop position of the slider, and a slide stop state of the slider can be held without operating the slider. Specific examples of sliders provided with such an automatic stop mechanism are disclosed in, for example, U.S. Pat. No. 6,647,598 (patent document 1) and british patent No. 1201522 (patent document 2).

For example, as shown in fig. 13 and 14, in the slider 80 described in patent document 1, an insertion groove 83 for stopping insertion of a pawl body 96 is provided in an upper blade 82, a pawl hole 85 provided in an end edge portion on a rear opening side of the upper blade 82 so as to penetrate through a tooth guide passage 84 from an upper surface side of the upper blade 82, a protrusion 86 for caulking provided upright on both left and right sides of the insertion groove 83, and left and right tab holding portions 87 for holding a tab 91 are provided at a front end portion of the upper blade 82.

In the locking pawl 96 of patent document 1, a pawl portion 97 inserted into a pawl hole 85 of the slider body 81 is disposed at one end portion of the locking pawl 96, a hook portion 98 fitted into an insertion groove 83 of the slider body 81 is disposed at the other end portion of the locking pawl 96, and a cover portion 99 covering a coupling rod 94 of the tab 91 is provided between the pawl portion 97 and the hook portion 98.

The tab 91 of patent document 1 includes a tab body 92, left and right arm portions 93 extending from the tab body 92, and a columnar connecting rod 94 connecting the distal end portions of the left and right arm portions 93. A recess 95 is formed in the center of the connecting rod 94 in the lateral direction so that the cross section of the connecting rod 94 is semicircular.

In the case of assembling the above-described tab 91 and the stopping pawl 96 to the slider body 81 in patent document 1, first, the coupling rod 94 of the tab 91 is inserted into the tab holding portion 87 of the slider body 81, and the tab holding portion 87 is swaged, whereby the tab 91 is rotatably held by the slider body 81. Next, the locking pawl 96 is positioned so that the pawl portion 97 of the locking pawl 96 is inserted into the pawl hole 85 of the slider body 81, and inserted into the insertion groove 83 of the slider body 81 holding the tab 91. Accordingly, the stopping pawl 96 is disposed at a predetermined position of the slider body 81.

Thereafter, the other end of the stopping pawl 96 is caulked and fixed with a predetermined clearance by caulking the protrusion 86 of the slider main body 81. Accordingly, the slider 80 of patent document 1 as shown in fig. 14 is assembled. In fig. 14, the pull tab 91 is illustrated in phantom lines for the purpose of facilitating understanding of the assembled state of the slider 80.

In the slider 80 of patent document 1 assembled in this way, when the tab 91 is laid down on the rear opening side as shown in fig. 14, the cover portion 99 of the stopping pawl body 96 is fitted into the recess 95 of the tab 91, and the relative position of the stopping pawl body 96 with respect to the slider body 81 is lowered, so that the pawl portion 97 of the stopping pawl body 96 is inserted (projected) into the element guide path 84 from the pawl hole 85 of the slider body 81.

On the other hand, when the tab 91 is raised or laid down on the tip end side of the slider 80, the cover portion 99 of the stopping pawl body 96 is pulled out from the concave portion 95 by the coupling rod 94 of the rotated tab 91 and lifted up, and therefore the claw portion 97 of the stopping pawl body 96 is pulled out from the element guide path 84. In this case, the other end of the stopping pawl 96 is fixed with a predetermined clearance as described above. Therefore, when the handle 91 is operated to lie down and stand up, the other end portion of the stop pawl body 96 can move in the insertion groove 83 with the clearance, and thus the insertion and extraction operations of the pawl portion 97 into and out of the tooth guide path 84 can be smoothly performed.

Therefore, when the slide fastener is configured using the slider 80, for example, when the operation of the tab 91 is released and the tab 91 is laid down on the rear opening side, the claw portion 97 of the stopping pawl body 96 can be caused to protrude from the element guide path 84 and engage with the element row. Therefore, the slider 80 can be stopped with respect to the element row and the stop position thereof can be maintained. On the other hand, when the pull tab 91 is raised to operate the slider 80, the claw portions 97 are pulled out from the element guide paths 84, and the engagement between the claw portions 97 and the element rows is released, so that the slider 80 can be smoothly slid along the element rows.

Further, the slider described in patent document 2 also includes a slider body, a stopping pawl body disposed on an upper blade of the slider body, and a tab whose one end is rotatably held on the upper blade, as in the slider of patent document 1.

In this case, an insertion groove for stopping insertion of the tab body, a tab hole provided through an edge portion on the rear opening side of the upper blade so as to penetrate the element guide passage from the upper surface side of the upper blade, and right and left tab holding portions for holding the coupling lever of the tab are provided on the upper blade of the slider body.

Further, the slider body is not provided with a projection for caulking the locking pawl as in patent document 1, but the other end portion of the locking pawl is fixed so as to leave a predetermined clearance, and a fixing portion that traverses the insertion groove in a bridging manner is fastened to the upper surface of the upper wing plate.

The pull tab in patent document 2 has a cam portion for lifting the stop pawl when the pull tab is raised with respect to the slider body, at a central portion of a cylindrical coupling lever that couples the left and right arm portions.

By forming a slide fastener using the slider of patent document 2, as in patent document 1, the pawl portion of the stopping pawl body can be engaged with the element row by lying down the pull tab on the rear opening side to maintain the stop position of the slider, and the pawl portion can be pulled out from the element guide path by standing up the pull tab, thereby smoothly sliding the slider.

Patent document 1: U.S. Pat. No. 6,647,598

Patent document 2: british patent specification No. 1201522

As described above, the sliders described in patent documents 1 and 2 are provided with the projection 86 or the fixing portion for caulking for fixing the stopper pawl 96 to the distal end portion of the slider body 81. Therefore, after the stopping pawl 96 is inserted into the insertion groove 83 of the upper blade 82 and disposed, the caulking portion thereof is caulked or the fixing portion is fastened to a predetermined position of the upper blade 82, so that the stopping pawl 96 is fixed to the upper blade 82 of the slider body 81 so that the pawl portion 97 of the stopping pawl 96 can be inserted into and removed from the element guide path 84.

However, when the stopping pawl 96 is fixed to the upper blade 82 of the slider body 81 in this manner, the caulking projection 86 or the fixing portion to which the stopping pawl 96 is fixed is in a state of bulging from the upper surface of the upper blade 82 of the slider body 81 (see fig. 14). In this case, when the slider 80 is used, the tab 91 is laid down toward the distal end side, and collides with the projection 86 or the fixing portion for caulking, or the projection 86 or the fixing portion for caulking is brought into contact with another member. Accordingly, the projection 86 or the fixing portion for caulking may be crushed by an external force, and the size of the clearance provided when fixing the other end portion of the stopping pawl 96 may not be stably maintained.

If a sufficient clearance cannot be secured on the other end side of the stopping pawl 96 in this manner, the movement (movement) of the stopping pawl 96 in the insertion groove 83 is restricted, so that the insertion and extraction operations of the pawl 97 into and out of the element guide path 84 cannot be smoothly performed, and as a result, there is a problem that a malfunction such as a reduction in the sliding characteristic of the slider 80 and a failure in the automatic stop mechanism that cannot function smoothly occurs.

The present invention has been made in view of the above-described conventional problems, and a specific object of the present invention is to provide a slider for a slide fastener in which, when the slider is used, the movement of a stop pawl is not restricted, the insertion and extraction operations of a pawl portion with respect to an element guide path can be smoothly performed, and the sliding characteristics of the slider and an automatic stop mechanism can be stably maintained for a long period of time.

Disclosure of Invention

In order to achieve the above object, a slider for a slide fastener according to the present invention is a slider for a slide fastener having, as a basic configuration, a slider body in which tip portions of upper and lower wing plates are coupled by a coupling column, and a Y-shaped element guide path is disposed between the upper and lower wing plates, a pull tab having one end portion rotatably held by the upper wing plate, and a locking pawl disposed on the upper wing plate and having a pawl portion at one end, wherein the upper wing plate includes an insertion groove into which the locking pawl is inserted, a caulking portion for caulking and fixing the other end portion of the locking pawl, and a pawl hole provided so as to allow the pawl portion to pass therethrough, and the locking pawl is disposed so that the pawl portion can be inserted into and pulled out from the element guide path through the pawl hole by a tilting and raising operation of the pull tab, the height position of the upper end of the caulking part is arranged to be flush with or lower than the upper surface of the upper wing plate.

In the slider for a slide fastener according to the present invention, it is preferable that a recessed portion is provided on an upper surface side of a portion to which the coupling post of the upper blade is coupled so as to be recessed with the insertion groove interposed therebetween, and the caulking portion is provided so as to stand from a bottom surface portion of the recessed portion. In this case, it is preferable that at least a part of the periphery of the recessed portion has a step portion formed at a height position between the upper surface of the upper blade and the bottom surface of the recessed portion.

In the slider for a slide fastener according to the present invention, the caulking portion may be extended so as to protrude from a side wall portion of the insertion groove into the insertion groove by pressing the upper blade from an upper surface to plastically deform a part of the upper blade.

In the slider for a slide fastener according to the present invention, it is preferable that a raised portion raised from an upper surface of the upper wing plate is provided between the caulking portion and a tab holding portion for holding the tab, and in this case, the raised portion is preferably disposed on both right and left sides of the insertion groove.

Effects of the invention

The slider for a slide fastener according to the present invention has an insertion groove for inserting a stopping pawl, a caulking portion for caulking and fixing the other end of the stopping pawl, and a through-provided pawl hole for allowing a pawl portion of the stopping pawl to pass therethrough, in an upper wing plate of a slider body, and the caulking portion is disposed so that a height position of an upper end of the caulking portion is flush with or lower than an upper surface of the upper wing plate in a state where the stopping pawl is caulked and fixed.

In the slider of the present invention, since the upper end of the caulking portion to which the stopping pawl is caulked and fixed is flush with or lower than the upper surface of the upper wing plate, even if the tab is laid down toward the front end side of the slider body, the tab does not collide with the caulking portion, and the caulking portion can be prevented from coming into contact with other members, and the caulking portion can be prevented from being crushed by direct external force when the slider is used.

Accordingly, the size of the clearance provided when the other end portion of the stopping pawl is fixed by the caulking portion can be stably maintained, and therefore, the movement of the stopping pawl is not restricted when the slider is used. Therefore, the slider can smoothly perform the operations of inserting and extracting the pawl portion into and from the element guide path, and stably maintain the sliding characteristics and the automatic stop mechanism of the slider for a long period of time.

In the slider for a slide fastener of the present invention, a recessed portion is provided on an upper surface side of a portion of the upper wing plate connected by the connecting post so as to be recessed with the insertion groove interposed therebetween, and the caulking portion is provided so as to stand from a bottom surface portion of the recessed portion. Accordingly, the upper end of the caulking portion to which the locking claw body is fixed can be easily set to be flush with or lower than the upper surface of the upper blade.

In this case, the step portion arranged at the height position between the upper surface of the upper blade and the bottom surface portion of the recessed portion is formed at least in part of the periphery of the recessed portion, whereby the strength of the mold for forming the slider can be stably secured, and the standing height of the caulking portion can be easily secured.

More specifically, when the caulking portion is provided to stand from the bottom surface portion of the recessed portion as described above, it is difficult to secure a sufficient space between the caulking portion and the side wall portion of the recessed portion since the slider itself is generally small. Therefore, in the mold for forming the slider body, the thickness of the mold portion for forming the caulking portion is inevitably thin, and if the thin portion becomes long, the strength of the mold is reduced. Therefore, in order to ensure the strength of the mold appropriately, it is necessary to shorten the length of the mold portion whose thickness is reduced, and as a result, the standing height of the clinch portion may be limited.

However, since the height difference portion is provided at least in a part of the periphery of the recessed portion as in the present invention, and the height of the side wall portion of the recessed portion is reduced, the thin metal mold portion disposed between the caulking portion and the side wall portion of the recessed portion can be shortened, and the strength of the metal mold can be prevented from being reduced. Further, by providing the stepped portion in this manner, the strength of the mold portion for forming the caulking portion can be stably secured, and as a result, it is not necessary to shorten the length of the mold portion in order to secure the strength of the mold, and the standing height of the caulking portion can be easily secured.

In the slider for a slide fastener according to the present invention, the caulking portion may be provided so as not to stand from the bottom surface portion of the recessed portion as described above, and may be extended so as to protrude from the side wall portion of the insertion groove into the insertion groove by pushing the upper wing plate from the upper surface and plastically deforming a part of the upper wing plate into the insertion groove. Accordingly, the upper end of the caulking portion to which the locking pawl is fixed can be easily set to be flush with or lower than the upper surface of the upper blade.

Further, the slider for a slide fastener of the present invention has a raised portion raised from the upper surface of the upper wing plate between the caulking portion and the tab holding portion for holding the tab. With such a raised portion, when the tab is laid down on the distal end side of the slider body, the tab can be brought into contact with the raised portion, thereby reliably preventing the tab from colliding with the caulking portion.

In particular, in this case, the raised portions are disposed on both the left and right sides of the insertion groove, so that the tab can be more reliably prevented from colliding with the caulking portion. Further, when the stopping pawl is moved up and down in the insertion groove by the operation of the pull handle, even if a part of the stopping pawl is moved upward relative to the upper surface of the upper wing plate, the stopping pawl can be shielded from the left and right sides by the raised portion so as not to be projected from the insertion groove, and thus the appearance of the slider can be improved.

Drawings

Fig. 1 is a perspective view showing a state in which components in a slider for a slide fastener according to example 1 are separated.

Fig. 2 is a perspective view showing a state where the slider is assembled.

Fig. 3 is a cross-sectional view showing a state in which the tab is laid down on the rear opening side in the slider.

Fig. 4 is a sectional view taken along line IV-IV in fig. 3.

Fig. 5 is a cross-sectional view taken along line V-V of fig. 3.

Fig. 6 is an explanatory diagram illustrating a mold for molding the slider body.

Fig. 7 is a cross-sectional view showing an operation of raising the tab from a state of lying down on the rear opening side in the slider.

Fig. 8 is a cross-sectional view showing a state where the tab is raised in the slider.

Fig. 9 is a cross-sectional view showing a state in which the slider is laid down on the side of the coupling post in this slider.

Fig. 10 is a perspective view showing a state where components are separated in the slider for a slide fastener according to example 2.

Fig. 11 is a perspective view showing a state where the slider is assembled.

Fig. 12 is a cross-sectional view showing a portion of the slider where a caulking portion is provided.

Fig. 13 is a perspective view showing a state where components are separated in the conventional slider.

Fig. 14 is a perspective view showing a state where the conventional slider is assembled.

Description of the symbols

1: a slider; 2: a slider body; 5: a handle; 6: stopping the claw body; 10: a metal mold; 10 a: a part of the metal mold (thin protrusion); 11: a gap; 21: an upper wing plate; 22: a lower wing plate; 23: a connecting column; 24: an upper flange portion; 25: a lower flange portion; 26: a shoulder orifice; 27: a rear opening; 28: a dental guide pathway; 31: a handle holding portion; 31 a: a protrusion for handle riveting; 32: inserting the groove; 33: a recessed portion; 34: riveting parts; 34 a: an upper end; 35: a raised portion; 36: a handle engaging and disengaging part; 36 a: a neck portion; 36 b: a snap-fit disengaging head; 37: a claw hole; 38: a height difference portion; 51: a handle main body portion; 52: an arm portion; 53: a connecting rod; 54: an opening window portion; 54 a: a sidewall portion; 55: a single-arm clamping sheet; 55 a: a first locking piece part; 55 b: a second locking piece part; 56: a cam portion; 56 a: an inclined surface; 61: a claw portion; 62: a hook portion; 63: a cover portion; 71: a slider; 72: a slider body; 74: riveting parts; 74 a: an upper end; 75: a recess.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Fig. 1 is a perspective view showing a state where components constituting a slider for a slide fastener according to example 1 are separated, and fig. 2 is a perspective view showing a state where the slider is assembled. Fig. 3 is a cross-sectional view showing a state where the tab is laid down on the rear opening side in the slider, fig. 4 is a cross-sectional view taken along line IV-IV in fig. 3, and fig. 5 is a cross-sectional view taken along line V-V in fig. 3.

In the slider of the present invention, the direction in which the slider slides so as to engage the element rows is defined as the front, and the direction in which the slider slides so as to disengage the element rows is defined as the rear. Further, a direction orthogonal to the upper and lower wing plates is defined as an up-down direction, and a direction parallel to the upper and lower wing plates and orthogonal to the slider sliding direction is defined as a left-right direction.

As shown in fig. 1, the slider 1 for a slide fastener according to embodiment 1 includes a slider body 2, a pull tab 5 having one end rotatably held by the slider body 2, and a locking pawl 6 disposed on the slider body 2. In the slider 1 of example 1, the slider body 2 and the tab 5 are manufactured by die-casting using a metal material such as an aluminum alloy or a zinc alloy. The stopper claw 6 is made of a metal material such as stainless steel or copper alloy by press forming.

As shown in fig. 1, the slider body 2 includes an upper wing plate 21, a lower wing plate 22, and a connecting post 23 connecting the distal ends of the upper and lower wing plates 21, 22. Upper flange portions 24 are provided on left and right sides of the upper blade 21 so as to hang down in a direction orthogonal to the upper blade 21, and lower flange portions 25 are provided on left and right sides of the lower blade 22 so as to stand in a direction orthogonal to the lower blade 22.

The slider body 2 has shoulder openings 26 disposed on both left and right sides of the coupling post 23 and a rear opening 27 disposed at a rear end, and a Y-shaped element guide passage 28 for coupling the left and right shoulder openings 26 and the rear opening 27 is formed between the upper and lower wing plates 21, 22.

The upper blade 21 of the slider body 2 includes left and right tab holding portions 31 for rotatably holding one end of the tab 5, an insertion groove 32 disposed at a left and right direction center portion of an upper surface of the upper blade 21 and into which the stopping pawl 6 is inserted, a recessed portion 33 recessed at a front end portion of the upper blade 21 so as to sandwich the insertion groove 32, a pair of left and right caulking portions 34 erected from a bottom surface portion of the recessed portion 33, protruding portions 35 disposed between the tab holding portions 31 and the recessed portion 33 and protruding from the upper surface of the upper blade 21 on both left and right sides of the insertion groove 32, and tab engaging and disengaging portions 36 for engaging and disengaging the tab 5 in a pull-down manner when the tab 5 is laid down to the rear opening 27 side.

The tab holding portion 31 has a pair of front and rear tab caulking projections 31a provided to protrude on both left and right sides of the insertion groove 32, and after a coupling rod 53 of the tab 5, which will be described later, is inserted between the front and rear tab caulking projections 31a, the front and rear pair of tab caulking projections 31a are bent in a direction to approach each other and caulked, whereby the coupling rod 53 of the tab 5 can be rotatably held by the tab holding portion 31.

The insertion groove 32 has a groove width equal to or slightly larger than the width dimension (dimension in the left-right direction) of the locking pawl 6 so that the locking pawl 6 can be stably inserted, and a step corresponding to the shape of the locking pawl 6 is provided in a staircase shape in the longitudinal direction of the insertion groove 32 at the bottom surface of the insertion groove 32. Furthermore, a claw hole 37 through which a claw portion 61 of the locking claw body 6, which will be described later, can be inserted when the locking claw body 6 is disposed in the insertion groove 32 is formed through the rear end portion of the insertion groove 32.

The recessed portion 33 is provided recessed on the upper surface side of the portion (i.e., the distal end portion) of the upper blade 21 to which the coupling post 23 is coupled. In embodiment 1, the insertion groove 32 is provided at the center portion in the left-right direction of the recessed portion 33 so as to extend in the front-rear direction, and therefore the recessed portion 33 is disposed in the left-right direction so as to sandwich the insertion groove 32.

In the portion of the recessed portion 33 surrounding the front half, a step portion 38 having a step surface is formed at a height position between the upper surface of the upper blade 21 and the bottom surface portion of the recessed portion 33.

Here, advantages resulting from providing the step portion 38 will be described with reference to fig. 6.

When the slider 1 of embodiment 1 is formed by die-casting, a mold 10 having a cavity corresponding to the shape of the slider 1 as shown in fig. 6 is used. In this case, when the slider having no stepped portion 38 as in example 1 is molded (in the case of the imaginary line shown in fig. 6), it is necessary to form the cavity for molding the caulking portion 34 having a predetermined height by projecting the height L1 of the portion 10a of the mold.

However, in this case, since the slider 1 is small in size, it is difficult to secure a sufficient space between the caulking portion 34 and the side wall portion of the recessed portion 33, and the thickness of the protruding portion 10a of the mold is inevitably thin. Therefore, if the height of the thin protruding portion 10a (hereinafter referred to as the thin protruding portion 10 a) of the die is increased to the height L1, the strength of the thin protruding portion 10a is reduced, and the thin protruding portion 10a is easily broken, so that the standing height of the caulking portion 34 is limited to some extent.

In contrast, with the slider 1 of example 1, since the height difference portion 38 (in the case of the solid line shown in fig. 6) is provided around the recessed portion 33, the height of the thin-walled projecting portion 10a of the cavity for forming the caulking portion 34 can be reduced to the dimension L2, and therefore, the strength of the thin-walled projecting portion 10a can be stably secured, and the occurrence of a die break can be prevented. Accordingly, the caulking portion 34 can be easily formed to a desired height, and the life of the mold can be extended, so that the burden on the manufacturing cost of the slider 1 can be reduced.

In the slider 1 of example 1, the caulking portion 34 is provided so as to stand from the bottom surface portion of the recessed portion 33, and after the locking pawl 6 is inserted into the insertion groove 32 of the upper blade 21, the right and left caulking portions 34 are bent inward to perform caulking, whereby the other end portion of the locking pawl 6 can be caulked and fixed between the inner surface of the tip end portion of the caulking portion 34 and the bottom surface of the insertion groove 32 with a predetermined clearance, as shown in fig. 2 to 4.

At this time, in the caulking portion 34 of example 1, the upper end 34a of the caulking portion 34 is disposed at a height position on the same plane as the upper surface of the upper blade 21 or a height position lower than the upper surface in a state where the stop claw body 6 is caulked and fixed. That is, in embodiment 1, the caulking portion 34 is provided so that the height H1 from the bottom surface portion of the recessed portion 33 to the upper end 34a of the caulking portion 34 is the same size or smaller than the height H2 from the bottom surface portion of the recessed portion 33 to the upper surface of the upper blade 21.

Further, the caulking portion 34 is formed such that the upper end 34a of the caulking portion 34 is disposed at a position higher than the stepped surface of the stepped portion 38 in a state where the locking pawl 6 is caulked and fixed, and thereby, when the other end portion of the locking pawl 6 is caulked and fixed by the caulking portion 34, a predetermined clearance that allows the other end portion of the locking pawl 6 to move in the vertical direction can be stably secured between the inner surface of the tip end portion of the caulking portion 34 and the bottom surface of the insertion groove 32.

The raised portions 35 are disposed on both left and right sides of the insertion groove 32 so as to project from the upper surface of the upper blade 21. When the protruding portion 35 is disposed, for example, when the stopping pawl 6 is disposed in the insertion groove 32 and the stopping pawl 6 moves up and down in the insertion groove 32 by the operation of the handle 5, even if a part of the stopping pawl 6 moves upward from the upper surface of the upper wing plate 21, the stopping pawl 6 can be shielded from the left and right sides by the protruding portion 35 so that the stopping pawl 6 does not fly out of the insertion groove 32 and is hardly visible, and thus the appearance of the slider 1 can be improved.

In addition, the ridge portion 35 determines a rotation limit of the tab 5 by abutting the tab 5 when the tab 5 is attached to the slider body 2 and laid down on the coupling post 23 side as described later. Accordingly, even if the tab 5 is completely laid down on the connecting column 23 side, a gap is provided between the laid-down tab 5 and the upper surface of the upper blade 21, and the tab 5 can be prevented from colliding with the caulking portion 34.

The tab engaging and disengaging portion 36 protrudes upward from the center of the upper surface of the rear opening side end portion of the upper blade 21. The tab engaging and disengaging portion 36 includes a neck portion 36a rising from the upper surface of the upper blade 21 and an engaging and disengaging head portion 36b arranged at an upper end of the neck portion 36a and bulging in the lateral direction from the neck portion 36 a. In this case, the dimension of the engaging and disengaging head 36b in the front-rear direction is set to be the same as the dimension of the neck portion 36 a. The engagement and disengagement head 36b has a flat upper surface, and has left and right side edges formed so as to bulge outward in an arc shape.

The handle 5 of embodiment 1 includes a handle body 51, left and right arm portions 52 extending in parallel from one end of the handle body 51, and a connecting rod 53 connecting the tip end portions of the left and right arm portions 52. Further, a rectangular opening window 54 penetrating in the front-rear direction is provided in the front-rear surface center portion of the handle body 51, and left and right one-arm locking pieces 55 are provided extending toward the connecting rod 53 side from a side wall portion 54a disposed on the other end portion side of the handle 5 among side wall portions surrounding the opening window 54.

In particular, the left and right one-arm locking pieces 55 have a first locking piece portion 55a extending obliquely from the proximal end side to the distal end side at a distance from each other, and a second locking piece portion 55b extending parallel to each other from the distal end of the first locking piece portion 55 a. In this case, the distance between the left and right second locking piece portions 55b is set to be larger than the width of the neck portion 36a of the tab engaging and disengaging portion 36 disposed in the slider body 2 and smaller than the width of the engaging and disengaging head portion 36b of the tab engaging and disengaging portion 36.

The connecting rod 53 of the handle 5 is formed in a cylindrical shape having a circular cross section, and a cam portion 56 protruding into an opening formed by the connecting rod 53, the left and right arm portions 52, and one end edge of the handle main body portion 51 is integrally provided at a central portion of the connecting rod 53. The cam portion 56 has, on the first surface (front surface) side of the tab 5, an inclined surface 56a inclined downward toward the cam portion tip so that the cross section of the cam portion 56 orthogonal to the tab longitudinal direction gradually decreases from the base end side to the tip end side of the cam portion 56. Therefore, for example, as shown in fig. 7 and the like, when the tab 5 is completely laid down on the rear opening 27 side with respect to the slider body 2, a predetermined gap 11 can be formed between the inclined surface 56a of the cam portion 56 and a cover portion 63 of the stopping pawl body 6, which will be described later.

The above-described stopping pawl 6 in this embodiment 1 has elasticity, has a pawl portion 61 at one end portion thereof which can be inserted into and pulled out from the element guide passage 28 through the pawl hole 37 of the slider body 2, and has a hook portion 62 at the other end portion thereof which is fitted into the insertion groove 32 of the slider body 2. A cover portion 63 having a substantially U-shaped cross section is provided between the claw portion 61 and the hook portion 62 of the stopping claw body 6 so as to cover the coupling rod 53 and the cam portion 56 of the handle 5 from above.

The cover 63 of the locking pawl 6 has a width dimension smaller than the interval between the left and right tab holding portions 31 disposed on the slider body 2 and larger than the groove width of the insertion groove 32 formed in the slider body 2. Further, a portion of the other end side of the stopping pawl body 6 with respect to the cover portion 63 has a width dimension smaller than a groove width of the insertion groove 32 formed in the slider body 2.

Next, a method of assembling the slider 1 of embodiment 1, which is composed of the slider body 2, the tab 5, and the locking pawl 6 as described above, will be described.

First, the coupling rod 53 of the tab 5 is inserted between the front and rear tab caulking projections 31a of the left and right tab holding portions 31 of the slider body 2, and the front and rear tab caulking projections 31a are bent in the direction approaching each other to perform caulking in a state where the tab 5 is laid down on the rear opening side of the slider body 2. Accordingly, the handle 5 is rotatably held with respect to the slider body 2 around the coupling rod 53.

Next, in the slider body 2 holding the tab 5, the stopping pawl 6 is inserted into the insertion groove 32 of the slider body 2 such that the pawl portion 61 of the stopping pawl 6 passes through the pawl hole 37 of the slider body 2 and the cover portion 63 of the stopping pawl 6 covers the coupling lever 53 and the cam portion 56 of the tab 5 from above. Accordingly, the stopping pawl 6 is disposed at a predetermined position of the slider body 2.

Thereafter, the caulking portion 34 disposed on the slider body 2 is bent inward and caulked, and thereby, in a state where the claw portion 61 of the stopping pawl 6 is inserted through the pawl hole 37, the other end portion of the stopping pawl 6 is caulked and fixed by the caulking portion 34 with a predetermined clearance. By performing such an operation, the slider for slide fastener 1 of embodiment 1 as shown in fig. 2 to 4 is assembled.

In the slider 1 of example 1 thus obtained, since the caulking portion 34 is provided standing from the bottom surface portion of the recessed portion 33, the upper end 34a of the caulking portion 34 is disposed at a height position on the same plane as the upper surface of the upper blade 21 or a height position lower than the upper surface in a state where the locking pawl 6 is caulked and fixed.

Therefore, the caulking portion 34 is not projected from the upper surface of the upper blade 21 as in the conventional slider 1, but is disposed at a position lower than the upper surface of the upper blade 21 in a state of being accommodated in the recess 33. Therefore, when the slide fastener is configured using the slider 1, the caulking portion 34 can be prevented from coming into contact with another member, and therefore, the caulking portion 34 can be prevented from being crushed by directly receiving an external force from another member. As a result, the size of the clearance provided inside the caulking portion 34 can be stably maintained when fixing the other end portion of the stopping pawl 6.

In the slider 1 of the present embodiment 1, as shown in fig. 2 and 3, for example, the tab 5 is laid down on the rear opening 27 side of the slider body 2 so that the cam portion 56 formed on the connecting lever 53 of the tab 5 is oriented in a direction substantially parallel to the upper surface of the upper blade 21. At this time, since the cam portion 56 of the tab 5 does not interfere with the cover portion 63 of the stopping pawl body 6, the cover portion 63 of the stopping pawl body 6 is not lifted up by the cam portion 56, and the pawl portion 61 of the stopping pawl body 6 is in a state of protruding into the tooth guide passage 28 through the pawl hole 37.

Therefore, when the slider 1 of example 1 is inserted into the element row of the fastener chain to construct the slide fastener, the tab 5 is laid down on the rear opening 27 side of the slider body 2, and the claw portion 61 of the stopping pawl body 6 projects into the element guide path 28 and is engaged with the element row, whereby the stop position of the slider 1 with respect to the element row can be maintained.

When the pull tab 5 is laid down toward the rear opening 27 of the slider body 2 as described above, the pull tab 5 is pushed into the pull tab engaging and disengaging portion 36 disposed in the slider body 2, so that the left and right one-arm locking pieces 55 disposed in the pull tab 5 are passed over the engaging and disengaging head 36b of the pull tab engaging and disengaging portion 36 while being deflected outward, and can be engaged with the pull tab engaging and disengaging portion 36 of the slider body 2 as shown in fig. 2, 3, and 5, for example.

In this way, the one-arm locking piece 55 of the tab 5 is locked to the tab engaging/disengaging portion 36 of the slider body 2, whereby the tab 5 can be held in a lying state. Therefore, the state in which the pawl portion 61 of the stopping pawl body 6 projects into the element guide path 28 and is engaged with the element row is stably maintained, and the slider 1 can be reliably held at the stop position. Further, the engagement state between the one-arm engagement piece 55 of the tab 5 and the tab engagement/disengagement portion 36 of the slider body 2 can be easily released by rotating the tab 5 in a direction away from the upper blade 21.

In the slider 1 of embodiment 1, the cam portion 56 of the tab 5 has the aforementioned lower inclined surface 56 a. Therefore, for example, even if the one-arm locking piece 55 of the tab 5 is not engaged with the tab engaging and disengaging portion 36 of the slider body 2, but the tab 5 is placed on the tab engaging and disengaging portion 36 and is disposed in a state inclined with respect to the upper surface of the upper wing plate 21, the cam portion 56 of the tab 5 does not interfere with the cover portion 63 of the stopping pawl body 6, and the claw portion 61 of the stopping pawl body 6 can be made to protrude into the element guide path 28 and be engaged with the element row.

Further, according to this, even when the tab 5 is slightly lifted up in order to release the state where the tab 5 is engaged with the tab engaging and disengaging portion 36, for example, if the tab 5 is rotated in a range where the cam portion 56 of the tab 5 does not interfere with the cover portion 63 of the stopping pawl 6, the claw portion 61 of the stopping pawl 6 is not pulled out from the element guide path 28, and the engaged state of the tab 5 can be released in a state where the slider 1 is held at the stop position.

On the other hand, in the slider 1 of example 1, when the tab 5 is pulled up as shown in fig. 7 in a state in which the tab 5 lies down on the rear opening 27 side of the slider body 2 and is raised in a direction to linearly advance with respect to the upper blade 21, the tab 5 is inclined at a predetermined inclination angle or more with respect to the upper surface of the upper blade 21, and accordingly, the cam portion 56 of the tab 5 interferes with the cover portion 63 of the stopping pawl 6, the stopping pawl 6 is pulled up by the cam portion 56, and the pawl portion 61 of the stopping pawl 6 is pulled out from the element guide path 28 (see fig. 8).

At this time, since the other end portion of the stopping pawl 6 is caulked and fixed by the caulking portion 34 with a predetermined clearance, the stopping pawl 6 can be easily deflected in the insertion groove 32 by the clearance, and the pulling-out operation of the pawl 61 can be smoothly performed.

In the slider 1 of embodiment 1, since the cam portion 56 of the tab 5 does not interfere with the cover portion 63 of the stopping pawl body 6 by being laid down on the coupling post 23 side in a state of rising from the tab 5, as shown in fig. 9, the cover portion 63 of the stopping pawl body 6 is lowered, and the pawl portion 61 protrudes into the element guide path 28 and is engaged with the element row. Accordingly, the slider 1 can be held at its stop position.

At this time, since the raised portion 35 is disposed between the tab holding portion 31 and the recessed portion 33 of the upper blade 21, the tab 5 is completely laid down on the connection column 23 side in a state where the tab 5 is in contact with the raised portion 35. Further, since a gap is formed between the tab 5 and the upper surface of the upper wing plate 21, even if the tab 5 is completely laid down on the connecting post 23 side, the tab 5 does not come into contact with the caulking portion 34 of the slider body 2. Therefore, in the slider 1 according to embodiment 1, the caulking portion 34 is not crushed by an external force from the tab 5 as in the conventional case, and the size of the clearance provided inside the caulking portion 34 can be stably maintained.

As described above, the slider 1 with the automatic stop mechanism according to embodiment 1 can prevent the caulking portion 34 to which the stop pawl 6 is caulked and fixed from being crushed by an external force due to contact with the handle 5 or other members.

Therefore, in the slider 1, since the clearance provided inside the caulking portion 34 can be stably maintained for a long period of time, the operation of inserting and extracting the pawl portion 61 into and from the element guide path 28 can be smoothly performed, and the automatic stop mechanism of the slider 1 can be stably caused to function, and there is no case where the pawl portion 61 protrudes into the element guide path 28 when the slider 1 slides, and the sliding characteristic of the slider 1 is deteriorated.

Further, as in example 1, by providing the recess 33 and erecting the caulking portion 34 from the bottom surface of the recess 33 to form the slider 1, the material cost can be suppressed to be lower than that of the conventional slider 1 in which the caulking portion 34 is erected from the upper surface of the upper blade 21, and therefore, the cost of the slider 1 can be reduced.

Example 2

Fig. 10 is a perspective view showing a state where components constituting the slider for a slide fastener of example 2 are separated, and fig. 11 is a perspective view showing a state where the slider is assembled. Fig. 12 is a cross-sectional view showing a cross section of a portion of the slider where the caulking portion is provided.

The slider 71 for a slide fastener according to example 2 is different from the slider 1 according to example 1 in the form of the caulking portion 74 for caulking the fixing/stopping pawl 6, and has substantially the same structure as the slider 1 according to example 1 except for the tip portion of the upper blade 21 provided with the caulking portion 74. Therefore, in embodiment 2, the components and parts having the same configurations as those of the slider 1 of embodiment 1 are denoted by the same reference numerals, and therefore, the descriptions of the components and parts are omitted.

In the slider 71 of embodiment 2, the upper blade 21 before caulking and fixing the stopping pawl 6 includes, as shown in fig. 10, right and left tab holding portions 31, an insertion groove 32 of the stopping pawl 6, ridge portions 35 arranged on both right and left sides of the insertion groove 32, and tab engaging and disengaging portions 36 provided upright on the end portion of the rear opening 27 of the upper blade 21, and the recessed portion 33 and the pair of right and left caulking portions 34 provided upright from the bottom surface portion of the recessed portion 33 as in the slider 1 of embodiment 1 are not provided.

When the slider 71 of embodiment 2 is assembled by attaching the tab 5 and the stopping pawl 6 to the slider body 72, first, the tab 5 is inserted into the left and right tab holding portions 31 of the slider body 2, and the tab holding portions 31 are caulked, so that the tab 5 is held rotatably with respect to the slider body 2, as in embodiment 1.

Next, in the slider body 2 holding the tab 5, the stopping pawl 6 is inserted into the insertion groove 32 of the slider body 2 such that the pawl portion 61 of the stopping pawl 6 passes through the pawl hole 37 of the slider body 2 and the cover portion 63 of the stopping pawl 6 covers the coupling lever 53 and the cam portion 56 of the tab 5 from above. Accordingly, the stopping pawl 6 is disposed at a predetermined position of the slider body 2.

Thereafter, by partially pushing the left and right side portions of the upper surface of the upper blade 21 from above on the front end portion of the upper blade 21 near the insertion groove 32, as shown in fig. 11 and 12, a portion of the upper blade 21 is plastically deformed so as to protrude from the side wall portion of the insertion groove 32 into the insertion groove 32. Accordingly, since the concave portion 75 is formed on the upper surface of the upper blade 21 by pressing and the caulking portion 74 can be extended in the insertion groove 32, the other end portion of the locking pawl 6 can be caulked and fixed with a predetermined clearance by the caulking portion 74. By performing the assembling operation as described above, the slider 71 for a slide fastener of example 2 as shown in fig. 11 is assembled.

In the slider 71 according to embodiment 2, as in embodiment 1, the upper end 74a of the caulking portion 74 is disposed at a height position on the same plane as the upper surface of the upper blade 21 or a height position lower than the upper surface in a state where the locking pawl 6 is caulked and fixed. Therefore, the caulking portion 74 to which the locking pawl 6 is caulked and fixed can be prevented from being crushed by contact with the handle 5 or other members, and the size of the clearance provided inside the caulking portion 74 can be stably maintained for a long period of time. Therefore, the slider 71 can smoothly perform the operation of inserting and extracting the pawl portion 61 into and from the element guide path 28, and the automatic stop mechanism of the slider 71 can be stably made to function, and the sliding characteristic of the slider 71 can be prevented from being lowered.

Further, in the slider 71 of embodiment 2, the caulking and fixing of the caulking portion 74 to the stopping pawl 6 can be easily performed as compared with the slider 1 of embodiment 1, and therefore, the assembling workability of the slider 71 can be improved.

Claims (4)

1. A slider for a slide fastener (1) comprises a slider body (2) in which the tip end portions of upper and lower wing plates (21, 22) are connected by a connecting column (23), and a Y-shaped element guide path (28) is disposed between the upper and lower wing plates (21, 22), a pull handle (5) having one end portion held rotatably on the upper wing plate (21), and a stopping pawl body (6) disposed on the upper wing plate (21) and having a pawl portion (61) at one end, wherein the upper wing plate (21) has an insertion groove (32) into which the stopping pawl body (6) is inserted, a caulking portion (34) caulking and fixing the other end portion of the stopping pawl body (6), and a pawl hole (37) provided so as to allow the pawl portion (61) to pass therethrough, and the stopping pawl body (6) is configured so that the pawl portion (61) can be inserted into and extracted from the element guide path (28) through the pawl hole (37) by the operation of the pull handle (5) of lying down and standing up The arrangement is characterized in that the device is characterized in that,

a recessed part (33) is provided on the upper surface side of the portion of the upper wing plate (21) connected by the connecting column (23) so as to sandwich the insertion groove (32) and be recessed,

the caulking part (34) is erected from the bottom surface of the recessed part (33), and the height position of the upper end (34 a) of the caulking part (34) is arranged to be flush with or lower than the upper surface of the upper blade (21) in a state where the stopper claw body (6) is caulked and fixed.

2. A slider for a slide fastener according to claim 1, wherein a step portion (38) formed at a height position between an upper surface of said upper blade (21) and a bottom surface portion of said recessed portion (33) is provided at least in a part of a periphery of said recessed portion (33).

3. A slider for a slide fastener according to claim 1 or 2, wherein a raised portion (35) raised from an upper surface of the upper wing plate (21) is provided between the caulking portion (34) and a pull holding portion (31) which rotatably holds the pull (5).

4. A slider for a slide fastener according to claim 3, wherein said ridge portion (35) is disposed on both left and right sides of said insertion groove (32).