WO2013080302A1 - Metal fastener elements - Google Patents

Abstract

These metal fastener elements (10, 30, 40, 50, 60) have lower sections (12c, 32c, 42c, 52c, 62c), which are provided with first main surfaces or second main surfaces formed lower than the position of first main surfaces or second main surfaces in a central area in the element width direction of body sections (12, 32, 42, 52, 62), disposed, in the element thickness direction, on at least one of four outer edge regions (12b, 32b, 42b, 52b, 62b) disposed on the body sections (12, 32, 42, 52, 62). Thus, when a sliding operation of sliders (4, 4a, 4b) is started in a slide fastener (1) having said fastener elements (10, 30, 40, 50, 60), the engagement of the fastener elements (10, 30, 40, 50, 60) with a pawl (6) is smoothly released, and the sliders (4, 4a, 4b) are less susceptible to a sense of getting caught on an element line (3).

Description

Metal fastener element

The present invention relates to a metal fastener element for a slide fastener, and more particularly, to a metal fastener element capable of improving the operability of the slider when starting sliding of the slider provided with a stop mechanism.

Generally, metal fastener elements used for slide fasteners include an engaging head, a trunk extending in the element length direction from one end of the engaging head, and a bifurcated element from one end of the trunk. It has a pair of left and right legs extending in the length direction.

In addition, slide fasteners are widely used for opening and closing openings such as scissors. As one of such slide fasteners, two sliders are arranged so that rear end portions or shoulder end portions are opposed to each other, thereby opening or closing from both ends in the length direction of the fastener stringer. A slide fastener that is configured to be capable of being known is known.

In a slide fastener having two sliders, there is a difference between the operational feeling of the slider when sliding in the meshing direction with respect to the element row and the operational feeling of the slider when sliding in the separating direction. In order to prevent this, a fastener element (hereinafter abbreviated as a double-sided element) in which the meshing head of the element is formed in a symmetrical shape in the element front and back direction (front and rear direction of the slide fastener) may be used.

An example of such a metal double-sided element is disclosed in Japanese Unexamined Patent Application Publication No. 2009-222 (Patent Document 1).
As shown in FIG. 21, the double-sided element 70 described in Patent Document 1 includes a meshing head 71, and a body 72 extending in the element length direction from the rear end of the meshing head 71. And a pair of left and right leg portions 74 branched and extended from the rear end portion of the trunk portion 72 through the crotch portion 73, and are configured vertically symmetrically with respect to the center plane in the element thickness direction. Yes.

In the double-sided element 70 shown in FIG. 21, the front-rear direction refers to the element length direction, and in particular, when viewed from the body 72, the meshing head 71 side is the front and the leg 74 side is the rear. The left-right direction refers to the element width direction, and the up-down direction refers to the element thickness direction (element front-back direction).

The meshing head 71 has a flat base portion 71a having a certain thickness, a meshing convex portion 71b protruding from the upper surface and the lower surface of the base portion 71a, and a body portion having a thickness dimension larger than that of the base portion 71a. And left and right extending portions 71 d extending forward from 72. Further, on the upper surface side and the lower surface side of the base portion 71a, a meshing convex portion 71b, left and right extending portions 71d, and a meshing concave portion 71c surrounded by the trunk portion 72 are formed. In this case, the left and right extending portions 71d are spaced apart from each other in the element width direction so that the meshing recess 71c is formed with a predetermined size.

The barrel portion 72 is formed thicker in the vertical direction than the base portion 71a through a step from the base portion 71a. In addition, the trunk portion 72 is arranged in a central region disposed between the meshing recess 71c and the crotch portion 73 in a range inside the position of the left and right extending portions 71d in the element width direction, and on both left and right sides of the central region. The front edge in the center area (the edge on the meshing head 71 side) and the front edge in the left and right outer edge areas are set at the same position in the element length direction. Has been.

The left and right leg parts 74 are formed to have the same vertical thickness as the trunk part 72, and the upper and lower surfaces of the trunk part 72 and the upper and lower faces of the leg part 74 are arranged on the same plane. Has been. The left and right leg portions 74 are opened in the element width direction before the double-sided element 70 is attached to the fastener tape, and the left and right leg portions 74 are inserted into the fastener tape between the left and right leg portions 74 that are opened. Then, the double-sided element 70 is fixed to the fastener tape by caulking the left and right leg portions 74 in directions close to each other.

The double-sided element 70 of Patent Document 1 is configured such that the dimension (distance) between the inner edges of the left and right extending portions 71d in the element width direction is set smaller than the dimension in the element width direction of the meshing convex portion 71b. Accordingly, the gap between the meshing convex portion 71b and the left and right extending portions 71d is reduced. For this reason, when the double-sided elements 70 are meshed with each other in the slide fastener configured using the double-sided element 70 and the slide fastener is closed, it is possible to prevent rattling between the meshed double-sided elements 70.

Furthermore, the double-sided element 70 of Patent Document 1 is configured to be positioned rearward of the inner edge side so that the outer edge side of the front end portion (front end portion) of the left and right extending portions 71d is scraped. As a result, when the double-sided elements 70 are engaged with each other in the slide fastener, for example, even if the double-sided elements 70 receive a pushing force that is pressed in the tape front and back direction of the fastener tape, each double-sided element 70 becomes the mating counterpart side. By rotating with respect to the double-sided element 70 around the meshing convex portion 71b, the posture of the double-sided element 70 can be easily tilted, so that the flexibility of the slide fastener (especially the flexibility to torsion of the slide fastener) ) Is improved.

JP 2009-222 A

Some sliders used in slide fasteners have a stopping mechanism that can hold the slider in a stopped state when the slider is stopped with respect to the element string of the fastener stringer.

Such a slider with a stop mechanism generally has a stop claw (specifically, a stop claw provided with a stop claw portion) capable of entering and leaving an element guide path formed between the upper and lower blades of the slider body. Have. Accordingly, when the slider is stopped with respect to the element row, the slider is held at the stopped position by engaging the tip of the stop claw (stop claw portion) with the fastener element constituting the element row. It becomes possible.

Also, when sliding the slider that is held in the stopped state by the stop pawl, the user pulls the pull handle to lift the stop pawl with the pull handle and retreat from the element guide path of the slider body. The engagement between the stop claw and the fastener element is released. Thus, the slider can be smoothly slid along the element row.

As a fastener element of a slide fastener having such a slider with a stop mechanism, for example, even if the double-sided element 70 of Patent Document 1 is adopted, the double-sided element that constitutes the element string of the fastener stringer By engaging with the slider 70, the slider stop mechanism can be operated to keep the slider stopped.

However, in such a slide fastener, for example, when the user pulls the slider pull to start the slider sliding operation, the engagement between the slider pawl and the double-sided element 70 cannot be released smoothly. In some cases, the slider feels like being caught on the element row, which is one of the factors that lower the operability of the slider.

Furthermore, when the engagement between the stop pawl and the double-sided element 70 is not released smoothly, the user pulls the slider strongly while the engagement between the stop pawl and the double-sided element 70 is not completely released. It is also possible to cause the double-sided element 70 and the slider pawl to be damaged.

The present invention has been made in view of the above-described conventional problems, and its specific object is to engage the slider pawl with the fastener element when starting the sliding operation of the slider in the slide fastener. An object of the present invention is to provide a metal fastener element that can be smoothly released and stably slide a slider, and a slide fastener having such a metal fastener element.

In order to achieve the above object, a metal fastener element provided by the present invention is arranged as a basic configuration on a body having a first main surface and a second main surface, and on one end side of the body. A meshing head having a meshing convex part and a meshing concave part, and a pair of left and right leg parts extending and branched from the other end side of the trunk part via a crotch part, the trunk part including the meshing concave part And a metal fastener element having a center region disposed in a range sandwiched between the crotch portion and left and right outer edge regions disposed on the outer side in the width direction of the center region, At least one of the left and right outer edge regions on the first main surface side and the left and right outer edge regions on the second main surface side, the outer edge in the element width direction central portion of the trunk portion with respect to the element thickness direction The first main surface on the same surface side as the region or the A lower portion having a first principal surface or a second principal surface formed lower than the position of the two principal surfaces is arranged, and with respect to the element length direction, the edge position on the leg portion side in the lower portion is The main feature is that the first main surface and the second main surface in the central region are set closer to the leg portion than the edge position on the meshing recess side.

In the metal fastener element according to the present invention, the lower portion is inclined so that the position in the element thickness direction on the first main surface or the second main surface gradually decreases toward the meshing head. It is preferable to have a surface.

Further, in the metal fastener element of the present invention, it is preferable that the low-order portion is disposed in both the left and right outer edge regions on the first main surface side or the second main surface side. Furthermore, it is preferable that the low-order part is arranged in all of the left and right outer edge regions on the first main surface side and the left and right outer edge regions on the second main surface side.

Furthermore, in the metal fastener element of the present invention, it is preferable that the first main surface and the second main surface in the central region are formed on flat surfaces parallel to each other.

In the metal fastener element of the present invention, the meshing head protrudes from the flat base portion formed thinner than the body portion, and the first main surface and the second main surface of the base portion. A meshing convex part; left and right extending parts extending from the body part to the meshing head side with a thickness dimension larger than the base part; the meshing convex part; the left and right extending parts; It is preferable to have the meshing recessed part formed surrounded by the trunk | drum.
In this case, it is preferable that the low-order part is disposed outside the positions of the left and right extending parts in the element width direction.

Further, in the metal fastener element of the present invention, the meshing head includes a meshing convex portion protruding from one of the first main surface and the second main surface, and a meshing concave portion recessed in the other. You may have.

Furthermore, according to the present invention, there is provided a slide fastener having a metal fastener element having the above-described configuration and a slider having a stop mechanism using a stop claw.

A metal fastener element according to the present invention includes a body having a first main surface and a second main surface, and a meshing head extending from one end of the body in the element length direction and having a meshing protrusion and a meshing recess. And a pair of left and right legs extending in the element length direction from the other end of the body part through the crotch part, and the body part has a central region and left and right outer edge regions in the element width direction. Have.

In addition, at least one of the left and right outer edge regions on the first main surface (upper surface) side and the left and right outer edge regions on the second main surface (lower surface) side of the body portion has a body portion in the element thickness direction. The first main surface is formed lower than the position of the first main surface in the center portion in the element width direction, or is formed lower than the position of the second main surface in the center portion in the element width direction of the body portion. The lower portion having the second main surface is disposed, and the edge position of the lower portion on the leg side is the meshing recess in the first main surface and the second main surface in the central region in the element length direction. It is set closer to the leg than the edge position on the side.

In the present invention, the central region of the body portion defined as the range sandwiched between the meshing recess and the crotch portion of the fastener element is the crotch from the edge position on the bottom surface side of the meshing recess in the element length direction. In the element width direction, the element width direction is the same as the smaller one of the maximum dimension in the element width direction in the meshing recess and the maximum dimension in the element width direction in the crotch part. It refers to the area arranged in the range of the central part that is partitioned with dimensions.

Further, the lower portion of the outer edge region is a position lower than the position of the first main surface or the second main surface on the same surface side as the lower portion in the central portion of the body portion in the element width direction with respect to the element thickness direction. That is, it means a portion where the first main surface or the second main surface is formed at a position in the direction in which the element thickness dimension decreases (inner element direction).

Further, for example, the first main surface or the second main surface from the central position with respect to the central position in the element thickness direction between the first main surface and the second main surface of the central portion in the element width direction in the body portion. When the dimension in the element thickness direction to the surface is defined as the element thickness dimension on the first main surface side or the second main surface side, the low-order part of the present invention refers to the first main surface side of the outer edge region or the first main surface side. It can also be said that the element thickness dimension is smaller than the element thickness dimension on the first principal surface side or the second principal surface side in the center part in the element width direction of the body portion on the two principal surface sides. is there.

The present inventors investigated in detail the cause of the feeling that the slider is caught on the element row at the start of the sliding operation of the slider having the stop mechanism. As a result, in the conventional slide fastener, when the stop pawl of the slider is engaged with the fastener element, the engagement surface of the stop pawl and the engagement surface of the fastener element are formed flat, respectively. When the elements are engaged, the planar engaging surfaces are in close contact with each other, and when the stop pawl is lifted by a puller and is retracted from the element guide path of the slider body, the stop pawl It has been found that the tip (ie, the stop claw) of the blade is lifted so as to draw an arc-shaped track toward the fastener element.

That is, in the conventional slide fastener, when the stop pawl is lifted by a pull and the engagement between the stop pawl and the fastener element is released, the arc-shaped movement of the stop pawl tip is hindered by the flat engagement surface of the fastener element. Thus, it was estimated that the slider was caught against the element row because the lifting of the stop pawl was hindered.

Therefore, the present inventors have made it difficult for the movement of the tip of the stop claw when the stop claw is lifted to be obstructed by the fastener element, so that the engagement between the stop claw and the fastener element can be smoothly released. Therefore, the present invention has been completed by repeating intensive studies and trial production.

That is, in the metal fastener element of the present invention, as described above, the lower portion serving as the relief portion of the stop claw is provided on the body portion that engages with the stop claw of the fastener element, and the lower portion is the fastener. In order to reduce interference between the stop pawl being lifted and the fastener element, which is disposed in at least one outer edge region of the four outer edge regions disposed in the body portion of the element and engaged with the stop pawl. The position of the end edge on the leg side of the part is formed so as to be arranged closer to the leg side than the region of the meshing recess in the element length direction.

As a result, in the slide fastener having the metal fastener element of the present invention, the slider pawl is lifted by the handle and formed by the lower portion of the fastener element when the engagement with the fastener element is released. Using the gap, the tip of the stop claw can move more smoothly than in the past.

Therefore, in the slide fastener, when the slider starts to slide, the engagement between the slider pawl and the fastener element is released more smoothly than before, and the feeling that the slider is caught on the element row is smaller than before. Since it can suppress, the operativity of a slider can be improved and the usability of a slide fastener can be improved.

In this case, the lower portion arranged in the outer edge region of the trunk portion is such that the position of the lower major portion in the element thickness direction of the first main surface or the second main surface is the lower portion in the center portion of the trunk portion in the element width direction. Preferably, it is lower than the position of the first main surface or the second main surface on the same surface side as the portion, and preferably the first main surface or the second main surface on the same surface side as the lower portion in the central region of the trunk portion. What is necessary is just to form in the at least one part including the element outer edge of the said outer edge area | region so that it may become lower than the position of a surface. In the present invention, the low-order part can be formed in the outer edge region of the trunk part and in the leg part, and can also be formed in a part of the central area of the trunk part.

In such a metal fastener element of the present invention, the lower portion is inclined so that the position in the element thickness direction on the first main surface or the second main surface gradually decreases toward the meshing head. Has a surface. In other words, the lower portion has a difference in height in the element thickness direction with respect to the center portion (especially, the central region) in the element width direction in the body portion, and the head portion meshes with the head position from the edge position on the leg side in the element length direction. It has an inclined surface that inclines so as to gradually increase in the direction toward the side edge position.

For example, when the fastener element of the present invention is manufactured by performing press processing or the like on a metal rectangular wire using a die, the die press is performed when the lower portion of the fastener element has the inclined surface as described above. The part which shape | molds the low-order part of a fastener element in a surface becomes a comparatively smooth shape. As a result, even if the pressing process is repeatedly performed using the mold, it is difficult for deformation and wear to occur on the press surface, and the life of the mold can be extended, so that the manufacturing cost of the fastener element can be reduced. it can.

In the fastener element of the present invention, the lower portion is arranged in both the left and right outer edge regions on the first main surface side or the second main surface side in the trunk portion. As a result, regardless of the direction in which the fastener element is attached to the fastener tape, when the slider pawl is provided on either the front side or the back side of the slide fastener relative to the fastener element, An effect of smoothly releasing the engagement between the stop pawl and the fastener element can be obtained.

Further, in the fastener element of the present invention, the lower portion is arranged in all of the left and right outer edge regions on the first main surface side and the left and right outer edge regions on the second main surface side in the trunk portion, The versatility of the fastener element is enhanced, and it can be applied to various types of slide fasteners. As a result, the cost of the fastener element can be greatly reduced.

In the fastener element of the present invention, the first main surface and the second main surface in the central region of the body portion are formed as flat surfaces parallel to each other. Thereby, when the stop pawl of the slider is engaged with the body portion of the fastener element, the slider stop mechanism (lock function) can be stably operated.

In the fastener element of the present invention, the meshing head has a flat plate-like base formed thinner than the body, a meshing protrusion projecting from the first main surface and the second main surface of the base, and the body Left and right extending parts extending to the meshing head side with an element thickness dimension larger than the base part, and a meshing concave part formed surrounded by the meshing convex part, the left and right extending parts, and the trunk part It is possible to have Even with a fastener element having such a meshing head, it is possible to obtain an effect of smoothly releasing the engagement between the stop pawl and the fastener element when the slider starts to slide.

In this case, since the lower portion is arranged outside the positions of the left and right extending portions in the element width direction, the stop pawl can be stably engaged with the fastener element when the slider is stopped. In addition, the stop pawl can be smoothly lifted from the fastener element at the start of sliding of the slider.

In the metal fastener element of the present invention, the meshing head has a meshing convex portion protruding from one of the first main surface and the second main surface, and a meshing concave portion recessed in the other. You may do it. Even a fastener element having such a meshing head can smoothly lift the stop pawl from the fastener element when the slider starts to slide.

And the slide fastener provided by this invention has the metal fastener element provided with the above-mentioned structure, and the slider provided with the stop mechanism by a stop nail | claw. With such a slide fastener, the stop pawl of the slider can be stably engaged with the fastener element when the slider is stopped. Further, when the slider starts to slide, the slider can be started smoothly by pulling on the slider handle to lift the stop claw with the handle and smoothly release the engagement between the stop claw and the fastener element.

It is sectional drawing which shows the principal part of the slide fastener which has a fastener element which concerns on Example 1 of this invention. It is a perspective view which shows the fastener element. It is a top view of the fastener element. FIG. 4 is a sectional view taken along line IV-IV shown in FIG. 3. FIG. 5 is a sectional view taken along line VV shown in FIG. 3. It is a schematic diagram explaining the process of manufacturing a fastener element from a metal rectangular wire. It is a perspective view which shows the metal mold | die which press-processes a flat wire. FIG. 7 is a cross-sectional view showing a flat wire and a die when the flat wire is pressed in the VIII-VIII line shown in FIG. 6. It is sectional drawing which shows the state which the stop nail | claw of a slider is engaging with the fastener element. It is a principal part enlarged view explaining the motion of a stop nail | claw when the stop nail | claw of a slider is lifted and engagement with a fastener element is cancelled | released. It is sectional drawing which shows the state which the stop nail | claw of each slider is engaging with the fastener element in the slide fastener which has two sliders. FIG. 10 is a plan view showing a fastener element according to a modification of Example 1. It is a bottom view of the fastener element. FIG. 14 is a cross-sectional view taken along line XIV-XIV shown in FIG. 12. FIG. 10 is a perspective view showing a fastener element according to another modified example of the first embodiment. It is sectional drawing which shows the state which the stop nail | claw of a slider has engaged with the fastener element. It is a perspective view which shows the fastener element which concerns on Example 2 of this invention. It is a perspective view which shows the fastener element which concerns on Example 3 of this invention. It is a perspective view which shows the fastener element which concerns on Example 4 of this invention. It is a perspective view which shows the fastener element which concerns on Example 5 of this invention. It is a perspective view which shows the conventional fastener element.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings by way of examples. The present invention is not limited to the embodiments described below, and various modifications can be made as long as it has substantially the same configuration as the present invention and has the same effects. Is possible. For example, in each Example, the manufacturing method of a fastener element is not specifically limited, It can change arbitrarily.

FIG. 1 is a cross-sectional view showing a main part of a slide fastener having a fastener element according to the first embodiment. 2 and 3 are a perspective view and a plan view of the fastener element. 4 and 5 are sectional views taken along lines IV-IV and VV shown in FIG.

In the following description of the fastener element, the front-rear direction (element length direction) refers to a direction parallel to the tape width direction of the fastener tape to which the fastener element is attached, and in particular, the front means the body of the fastener element. The direction on the side where the meshing head is disposed with respect to the portion is defined as the rear direction and the direction on the side where the leg portion is disposed on the body portion of the fastener element. The left-right direction (element width direction) refers to the direction parallel to the tape front and back direction of the fastener tape, and the up-down direction (element thickness direction) refers to the direction parallel to the tape length direction of the fastener tape. And

The slide fastener 1 according to the first embodiment includes a pair of left and right fastener stringers 2 in which an element row 3 is formed at opposite tape side edges of the fastener tape, and a slider 4 that is slidably disposed along the element row 3. And have. Here, in FIG. 1, the illustration of the fastener tape is omitted for easy understanding of the relationship between the fastener element 10 forming the element row 3 and the slider 4. 2 and 3 show the form of the fastener element 10 in a state of being attached to the fastener tape (that is, a state after a leg portion 14 described later is plastically deformed by caulking).

In addition, the slide fastener 1 of the present Example 1 has the main characteristics in the form of each fastener element 10 attached to a fastener tape, and about a fastener tape and the slider 4, it is substantially the same as the past. in use.

For example, a fastener tape (not shown) is woven or knitted into a belt shape, and a tape main portion sewn on a fastener-attached product (clothing, bags, etc.) and a tape side edge portion on which an element row 3 is formed. (Also referred to as an element mounting portion). Further, a core string portion 2a is disposed on the tape side edges of the left and right fastener tapes facing each other, and a plurality of metal fastener elements 10 are attached to the tape side edges of the fastener tape including the core string portion 2a. It is worn.

Further, the slider 4 of the first embodiment includes a stop mechanism. For example, as shown in FIGS. 1 and 9, the slider body 5, the stop pawl 6 including the stop pawl portion 6 a, and the slider body 5 A cover member 7 to be assembled, an elastic member (plate spring member) 8 that is mounted between the slider body 5 and the cover member 7 and urges the stop pawl 6, and is held between the slider body 5 and the cover member 7. And a handle 9 having a mounting shaft portion.

The slider body 5 includes upper and lower blades 5a and 5b, guide pillars 5c that connect one end of the upper and lower blades 5a and 5b, and a flange portion 5d disposed on the left and right side edges of the upper and lower blades 5a and 5b. The upper wing plate 5a has a pair of first and second mounting post portions 5e and 5f which are erected on the upper surface side of the upper blade plate 5a and which position and fix the cover member 7. Left and right shoulder openings are formed at one end of the slider body 5 with the guide column 5 c interposed therebetween, and a rear opening is formed at the other end of the slider body 5. Further, a Y-shaped element guide path is formed between the upper and lower blades 5a and 5b so as to communicate the left and right shoulder openings and the rear opening. A claw hole 5g into which 6a is inserted is drilled so as to penetrate the element guide path from the upper surface side of the upper blade 5a.

The stop claw 6 is locked to a stop claw portion 6a disposed at one end portion of the stop claw 6 and a recess portion 5h disposed at the other end portion and formed in the upper blade 5a of the slider body 5. And a single piece 6b. The stop pawl 6 is urged by the elastic member 8 when the slider 4 is not operated, and is arranged so that the stop pawl portion 6a enters the element guide path through the pawl hole 5g of the upper blade 5a.

In the present invention, the slider is not limited to the above-described configuration as long as the stop claw is attached to the slider body as a stop mechanism. For example, other known stop mechanisms may be used depending on the situation. A slider with a mark can be applied.

A fastener element 10 according to the first embodiment includes an engagement head 11, a trunk portion 12 disposed on the rear end side of the engagement head 11, and a branching and extending from the rear end of the trunk portion 12 via a crotch portion 13. A pair of left and right leg portions 14 is formed, and the upper half portion and the lower half portion of the fastener element 10 are formed symmetrically with respect to the center plane in the element thickness direction.

In this case, as shown in FIG. 3, the body portion 12 is arranged from the edge position on the bottom side of the meshing recess 11 c described later to the position of the crotch portion 13 in the element length direction (front-rear direction). A portion is defined, a portion disposed on the front side of the body portion 12 is defined as the meshing head 11, and a portion disposed on the rear side of the body portion 12 is defined as the leg portion 14. The crotch portion 13 is an inner edge continuously formed between the left and right leg portions 14, and the interval in the element width direction between the inner side surfaces of the left and right leg portions 14 is the rear (leg portion 14). This is the part that is gradually increasing toward the tip.

The meshing head 11 includes a flat base portion 11a having a constant overall dimension in the vertical direction (element thickness direction) between the upper surface (first main surface) and the lower surface (second main surface), and a base portion Engagement protrusions 11b projecting from the upper and lower surfaces of 11a, left and right extension parts 11d extending forward from the body part 12, engagement protrusions 11b, left and right extension parts 11d, and body part 12 And a meshing recess 11c formed by being surrounded by.

In the meshing head 11, the base 11 a is formed to be thin with a smaller element thickness than the body 12. Further, the outer peripheral edge of the base portion 11a is formed in an arc shape such that the dimension in the left-right width direction of the base portion 11a gradually decreases toward the front.
The upper and lower meshing projections 11 b are projected in a mountain shape at the center of the base 11 a in the element width direction, and are spaced apart from the body 12 by a predetermined distance.

The left and right extending portions 11d are disposed substantially parallel to the front from the body portion 12 at positions spaced apart from each other, and a predetermined gap is provided between the left and right extending portions 11d and the meshing convex portion 11b. Is provided.

The upper and lower surfaces of the left and right extending portions 11d are arranged on the same plane as the central region 12a of the trunk portion 12 and the upper and lower surfaces of the leg portions 14. Furthermore, the inner side surface and the outer side surface of the left and right extension portions 11d are formed in a tapered shape inclined with respect to the vertical direction so that the dimension in the element width direction of each extension portion 11d gradually decreases as approaching the upper surface or the lower surface. Has been.

The trunk portion 12 of the first embodiment is formed with a larger overall dimension (thickness) in the element thickness direction between the upper surface and the lower surface than the base portion 11a of the meshing head 11. The trunk portion 12 includes a central region 12a disposed in a range sandwiched between the meshing recess 11c and the crotch portion 13, and outer edge regions 12b disposed on the left side and the right side of the central region 12a.

In the case of the first embodiment, as described above, a gap is provided between the left and right extending portions 11d and the meshing convex portion 11b, and the meshing concave portion 11c is not formed as a closed space. The maximum dimension in the element width direction in the meshing recess 11c is the maximum dimension in the element width direction in a portion (part of the meshing recess 11c) sandwiched between the left and right extending portions 11d.

In this case, the maximum dimension in the element width direction of the portion sandwiched between the left and right extending portions 11d in the meshing recess 11c is set slightly smaller than the maximum dimension in the element width direction in the crotch portion 13. Therefore, the central region 12a of the trunk portion 12 defined as a range sandwiched between the meshing recess 11c and the crotch portion 13 has a maximum dimension in the element width direction in the meshing recess 11c (that is, the left and right extension). This is the area of the central portion partitioned with the same dimension in the element width direction as the maximum dimension between the portions 11d.

For example, when the maximum dimension in the element width direction of the portion sandwiched between the left and right extending portions 11d in the meshing recess 11c is set larger than the maximum dimension in the element width direction in the crotch portion 13, The central region 12 a of the portion 12 is a central portion region that is partitioned with the same dimension in the element width direction as the maximum dimension in the element width direction of the crotch portion 13.

The central region 12a of the barrel 12 has an upper surface and a lower surface, and a front end surface constituting a part of the inner peripheral surface of the meshing recess 11c. The upper surface and the lower surface of the central region 12a are arranged in parallel to each other, and the overall dimension in the element thickness direction between the upper surface and the lower surface (the element thickness dimension on the upper surface side and the element thickness dimension on the lower surface side). Is set to a certain size.

The left and right outer edge regions 12b on the upper surface side and the left and right outer edge regions 12b on the lower surface side of the body 12 are on the same surface side as the outer edge region 12b in the central region 12a in the element thickness direction (vertical direction). Lower positions 12c each having an upper surface or a lower surface are formed at positions lower than the positions of the upper surface or the lower surface.

In other words, the lower portion 12c is configured such that the element thickness dimension on the upper surface side or the lower surface side in each outer edge region 12b is smaller than the element thickness dimension on the upper surface side or the lower surface side in the central region 12a. Here, the element thickness dimension means a dimension in the element thickness direction from the center position to the upper surface or the lower surface when the center position in the element thickness direction between the upper surface and the lower surface of the central region 12a is used as a reference.

In this case, the lower portion 12c formed in each outer edge region 12b is formed in a partial range including the outer edges (in other words, left and right ridge lines) of the outer edge region 12b. Then, in the element width direction, it is distribute | arranged to the part outside the position of 11 d of right-and-left extension parts.

Each low-order part 12c is arranged such that the position in the element thickness direction on the upper or lower surface of the lower-order part 12c gradually decreases toward the meshing head 11, in other words, the element on the upper or lower side of the lower-order part 12c. It has an inclined surface that is inclined downward toward the meshing head 11 along the element length direction so that the thickness dimension gradually decreases toward the meshing head 11.

The position of the front end edge (boundary with the flat base portion 11a) of the inclined surface is set to the same position as the front end edge (boundary with the flat base portion 11a) of the front end surface in the central region 12a in the element length direction. Has been. In addition, the position of the rear end edge of the inclined surface is set to the rear side in the element length direction from the position of the front end edge on the upper surface and the lower surface in the central region 12a.

In the present invention, the lower portion 12c formed in the outer edge region 12b of the body portion 12 is a partial range including the outer edge of the outer edge region 12b so as to correspond to the position of the stop claw portion 6a of the slider 4. For example, if necessary, the lower portion 12c may be formed in the entire range of each outer edge region 12b. Alternatively, the lower region 12c may extend beyond the outer edge region 12b and the leg region 12a or the leg 12b. It is also possible to form the lower portion 12c so as to extend to a part of the portion 14.

The pair of leg portions 14 of the first embodiment is bifurcated and extended from the rear end of the trunk portion 12 to the left and right. Further, the upper surface and the lower surface of the leg portion 14 are formed as flat surfaces parallel to each other, and the overall dimension in the element thickness direction between the upper surface and the lower surface of the leg portion 14 is such that the fastener element 10 is stably attached to the fastener tape. It is set to a predetermined size for mounting.

Next, a method for manufacturing the metal fastener element 10 of the first embodiment will be described.
First, a rectangular wire 21 made of a metal such as a copper alloy, a nickel alloy, or aluminum and having a predetermined size is prepared as shown in FIG. 6, and the meshing head of the fastener element 10 as shown in FIG. A pair of upper and lower molds 22 for forming the part 11 and the body part 12 by pressing is prepared.

Next, a pair of upper and lower molds 22 are used as shown in FIG. 8 while intermittently transporting the flat wire 21 along its length direction (from the upper side to the lower side in FIG. 6). The flat wire 21 is pressed to partially plastically deform the flat wire 21, thereby forming the meshing head 11 and the body 12 at a predetermined pitch. Note that the imaginary line depicted in FIG. 6 has not yet been actually molded, but indicates a part that will be molded.

At this time, in the formed fastener element 10 of the first embodiment, as described above, the lower portion 12c of the body portion 12 has an inclined surface that gradually decreases the element thickness dimension toward the meshing head portion 11. ing. Therefore, as shown in FIGS. 7 and 8, the press surface of the mold 22 is provided with a projecting portion or a projecting portion that projects in a tapered shape in order to form the lower portion 12 c in the fastener element 10. In addition, the shape of the press surface can be configured relatively smoothly.

Thereby, even if the press work is repeatedly performed using the mold 22, deformation or wear is hardly generated on the press surface of the mold 22, and the life of the mold 22 can be extended. As a result, since the cost of the mold 22 can be suppressed, the manufacturing cost of the fastener element 10 can be reduced.

Subsequently, in order to form the leg portion 14 of the fastener element 10, an edge cutting process is performed to cut out a substantially triangular unnecessary portion from the left and right side edge portions of the flat wire 21. Thereafter, the rectangular wire 21 is punched so as to follow the outer peripheral shape of the fastener element 10, whereby a fastener element that exhibits a substantially Y shape with a pair of leg portions 14 opened in the element width direction. 10 is obtained.

At this time, in the fastener element 10 of the first embodiment, in order to improve the yield, the shape of the fastener element 10 punched from the flat wire 21 is the same as the inner surface shape of the left and right leg portions 14 in the opened state. The outer peripheral surface shape of the part 11 is designed to be compatible with each other. Furthermore, the fastener element 10 after being punched from the flat wire 21 is subjected to a polishing process or a painting process as necessary.

The fastener element 10 obtained in this way is formed with the left and right leg portions 14 opened to the left and right from the front end portion toward the rear end portion on the body portion 12 side. The fastener element 10 is attached to the fastener tape by inserting the tape side edge portion of the fastener tape in between and further crimping the left and right leg portions 14 inwardly toward each other to plastically deform the fastener element 10. Is done.

Then, the fastener stringer 2 is manufactured by sequentially attaching the plurality of fastener elements 10 to the fastener tape at a predetermined pitch. Then, the obtained fastener stringers 2 are combined in pairs, and the slider 4 is slidably attached to the element row 3 of the fastener stringer 2 to manufacture the slide fastener 1.

In the slide fastener 1 of the first embodiment obtained in this way, the slider 4 has a stop mechanism by the stop claw 6. For this reason, when the slider 4 is stopped with respect to the element string 3 of the fastener stringer 2, as shown in FIG. 9, the stop claw portion 6a of the stop claw 6 is advanced into the element guide path and the fastener element 10 ( In particular, by engaging with the body 12) of the fastener element 10, the slider 4 can be kept stopped.

Particularly in this case, in the fastener element 10 of the first embodiment, since the upper surface and the lower surface in the central region 12a of the trunk portion 12 are formed as flat surfaces, the stop pawl 6 of the slider 4 is engaged with the fastener element 10. Sometimes, the stop claw portion 6a of the stop claw 6 and the central region 12a of the body portion 12 are brought into close contact with each other, so that the stop mechanism (lock function) of the slider 4 can be operated stably.

Further, in the slide fastener 1, when the slider 9 is started to slide by pulling the pull 9, the stop claw 6 is lifted by the pull 9, and the stop claw 6 a of the stop claw 6 faces the fastener element 10. Ascend while drawing an arc-shaped trajectory. At this time, in the fastener element 10 of the first embodiment, the low-order portions 12c are formed in the four outer edge regions 12b arranged in the body portion 12, respectively.

For this reason, by using the lower portion 12c of the fastener element 10 as an escape portion when the stop claw portion 6a rises, the arcuate movement of the stop claw portion 6a is caused by the fastener element 10 in the case of a conventional slide fastener. The engagement between the stop claw portion 6a and the fastener element 10 can be smoothly released.

Thereby, when the sliding operation of the slider 4 is started, it is difficult to receive a feeling that the slider 4 is caught on the element row 3, and the slider 4 can be started smoothly. The ease of use of the fastener 1 can be improved.

In addition, this invention is not limited to embodiment of the slide fastener 1 which concerns on the above-mentioned Example 1, The structure can be changed arbitrarily as needed.
For example, the slide fastener 1 according to the first embodiment is provided with only one slider 4 for the pair of left and right fastener stringers 2. However, according to the present invention, the first and second sliders 4a and 4b having the same form as the slider 4 in the first embodiment are connected to the pair of fastener stringers 2 as shown in FIG. It is also possible to constitute a slide fastener that can be closed (or opened) from both ends in the length direction of the fastener stringer 2 by being attached so that the end portions on the rear opening side face each other.

Even in such a slide fastener having the first and second sliders 4a and 4b, the lower portion 12c is formed in each of the outer edge regions 12b on the upper and lower surfaces of the body portion 12 of the fastener element 10. For this reason, for example, the stop claw 6 of the first slider 4 a is engaged with one of the upper and lower surfaces of the fastener element 10, and the stop claw 6 of the second slider 4 b is engaged with the other of the upper and lower surfaces of the fastener element 10. However, by pulling the pulls 9 of the first and second sliders 4a and 4b to start the respective slides, by using the lower portion 12c formed in each outer edge region 12b of the fastener element 10, The engagement between the stop claw portion 6a and the fastener element 10 can be smoothly released, and the first and second sliders 4a and 4b can be slid smoothly.

Further, for example, the fastener element 10 in the above-described first embodiment is configured such that the lower portion 12c is formed in each of the left and right outer edge regions 12b arranged on the upper surface and the lower surface of the body portion 12, but in the present invention, The lower portion may be formed only in the left and right outer edge regions of one of the upper surface and the lower surface of the part, and further, one of the left and right outer edge regions arranged on the upper surface and the lower surface of the body portion. The lower portion may be formed only in one outer edge region.

Specifically, for example, in the fastener element 10a according to the modification of the first embodiment as shown in FIGS. 12 to 14, the upper half and the lower half are formed in an asymmetric shape, Although the lower portion 12c is formed on the left and right outer edge regions 12b on the upper surface side of the body portion 12 of the fastener element 10a (see FIG. 12), the lower portion 12c is not formed on the left and right outer edge regions 12b on the lower surface side. (See FIG. 13).

Further, for example, in the fastener element 10b according to another modified example of the first embodiment as shown in FIG. 15, the lower portion 12c is formed only in the left outer edge region 12b on the upper surface side of the body portion 12 of the fastener element 10b. The lower portion 12c is not formed in the right outer edge region 12b on the upper surface side and the left and right outer edge regions 12b on the lower surface side.

Even in a slide fastener having such fastener elements 10a and 10b, for example, as shown in FIG. 16, in the body 12 of the fastener element 10b, at least the outer edge region 12b with which the stop claw 6a of the slider 4 abuts. If the low-order part 12c is formed, since it becomes difficult to receive a feeling that the slider 4 is caught on the element row 3 at the start of the sliding operation of the slider 4, the operability of the slider 4 can be improved.

FIG. 17 is a perspective view showing a metal fastener element according to the second embodiment.
In Example 2 and Examples 3 to 5 to be described later, the shape of the fastener element is different from that in Example 1 described above, and the configuration of the slide fastener other than the shape of the fastener element is described in the above Example. Same as 1.

The fastener element 30 of the second embodiment is branched and extended from the trunk 32, the meshing head 11 disposed on the front end side of the trunk 32, and the crotch 13 from the rear end of the trunk 32. A pair of left and right legs 14 is provided, and the upper half and the lower half of the fastener element 30 are formed in a symmetrical shape.

In the fastener element 30 of the second embodiment and the fastener element 40 of the third embodiment to be described later, the meshing head portion 11, the crotch portion 13, and the leg portion 14 are configured in the same manner as the fastener element 10 according to the first embodiment. Has been. For this reason, about the meshing head 11, the crotch part 13, and the leg part 14, suppose that the detailed description is abbreviate | omitted by using the same code | symbol as the case of the above-mentioned Example 1 and representing.

The trunk portion 32 of the second embodiment is formed with a larger overall dimension in the element thickness direction between the upper surface and the lower surface than the base portion 11 a of the meshing head 11, and between the meshing recess 11 c and the crotch portion 13. A central region 32a disposed in the sandwiched area and an outer edge region 32b disposed on the left and right sides of the central region 32a are provided.

The central region 32a of the trunk portion 32 has an upper surface and a lower surface, and a front end surface that constitutes a part of the inner peripheral surface of the meshing recess 11c. The upper surface and the lower surface of the central region 32a are arranged in parallel to each other, and the overall dimension in the element thickness direction between the upper surface and the lower surface is set to a constant size.

The upper and lower outer edge regions 32b on the upper surface side and the left and right outer edge regions 32b on the lower surface side of the trunk portion 32 are provided with upper and lower surfaces at positions lower than the upper and lower surfaces in the central region 32a in the element thickness direction. The low order part 32c is formed, respectively, and each low order part 32c is distribute | arranged to the one part range containing the right-and-left ridgeline part in the outer edge area | region 32b.

In particular, each low-order part 32c in Example 2 descends toward the outer side in the element width direction so that the position in the element thickness direction on the upper surface or the lower surface gradually decreases toward the left and right outer edges (ridge line parts). It has an inclined surface. In this case, the position of the rear end edge of the inclined surface in each lower portion 32c is set to the rear side in the element length direction with respect to the position of the front end edge on the upper surface and the lower surface in the central region 32a.

In addition, the fastener element 30 of the second embodiment is implemented by changing the shape of the press surface in the mold 22 of the first embodiment shown in FIG. 7 in accordance with the shape of the body portion 32 of the fastener element 30. The fastener element is manufactured using the same method as that described in Example 1.

In the slide fastener configured using the fastener element 30 of the second embodiment, when the slider 4 provided with the stop mechanism by the stop claw 6 is stopped with respect to the element string of the fastener stringer, By engaging the stop claw portion 6a with the fastener element 30, the stop state of the slider 4 can be maintained.

Further, when the sliding operation of the slider 4 is started by pulling the pull 9, the lower portion 32 c is formed in the body portion 32 of the fastener element 30, and therefore the lower portion 32 c is used as a relief portion of the stop claw portion 6 a. By doing so, the engagement between the stop claw portion 6a and the fastener element 30 can be smoothly released.

In particular, in the second embodiment, since the lower portion 32c has an inclined surface that is inclined downward toward the outside in the element width direction as described above, as the left and right outer edges of the fastener element 30 are approached, the stop claw A large space is provided as a clearance for the portion 6a. Therefore, when the stop claw portion 6a of the slider 4 rises while drawing an arcuate trajectory, the movement of the stop claw portion 6a is further prevented by the fastener element 30, and the slider 4 can be slid more smoothly. It becomes possible.

FIG. 18 is a perspective view showing the metal fastener element according to the third embodiment.
The fastener element 40 according to the third embodiment includes a meshing head 11, a trunk portion 42 disposed on the rear end side of the meshing head 11, and a branching and extending from the rear end of the trunk portion 42 via the crotch portion 13. A pair of left and right leg portions 14 is formed, and the upper half portion and the lower half portion of the fastener element 40 are formed in a symmetrical shape.

The trunk portion 42 of the third embodiment is formed with a larger overall dimension in the element thickness direction between the upper surface and the lower surface than the base portion 11 a of the meshing head 11, and between the meshing recess 11 c and the crotch portion 13. It has a central region 42a disposed in the sandwiched area and outer edge regions 42b disposed on the left and right sides of the central region 42a. The central region 42a of the trunk portion 42 has an upper surface and a lower surface that are parallel to each other, and a front end surface that constitutes a part of the inner peripheral surface of the meshing recess 11c.

The upper and lower outer edge regions 42b on the upper surface side and the left and right outer edge regions 42b on the lower surface side of the trunk portion 42 have upper and lower surfaces at lower positions in the element thickness direction than the upper and lower surfaces of the central region 42a. Is formed in a partial range including the left and right ridge lines.

In particular, each lower portion 42c in the third embodiment is formed with the upper surface and the lower surface of the lower portion 42c parallel to the upper surface and the lower surface of the central region 42a. In the case of the first embodiment and the second embodiment described above, In comparison, a space serving as a relief portion of the stop claw portion 6a of the slider 4 is formed larger.

Further, also in the fastener element 40 of the third embodiment, by changing the shape of the press surface in the mold 22 of the first embodiment shown in FIG. 7 in accordance with the shape of the body portion 42 of the fastener element 40, Manufactured using the same method as the fastener element manufacturing method described in the first embodiment.

The slide fastener configured using the fastener element 40 of this third embodiment is similar to the first and second embodiments described above in that the slider 4 having a stop mechanism by the stop pawl 6 is used as a fastener stringer. When the element row is stopped, the stop state of the slider 4 can be held by the stop claw 6.

Further, when the sliding operation of the slider 4 is started by pulling the pull 9, the engagement between the stop claw portion 6 a and the fastener element 40 is performed by utilizing the lower portion 42 c formed on the body portion 42 of the fastener element 40. Can be released smoothly, making it difficult to receive a feeling that the slider 4 is caught on the element row.

FIG. 19 is a perspective view showing a metal fastener element according to the fourth embodiment.
The fastener element 50 according to the fourth embodiment includes a meshing head 51, a trunk portion 52 disposed on the rear end side of the meshing head 51, and a branch portion extending from the rear end of the trunk portion 52 via a crotch portion 53. And a pair of left and right leg portions 54.

The meshing head 51 of the fourth embodiment includes a flat base 51a having a constant overall dimension in the element thickness direction between the upper surface and the lower surface, and an engagement projecting from the upper and lower surfaces of the base 51a. The convex portion 51b, the left and right extending portions 51d extending forward from the left and right end portions of the trunk portion 52, the meshing convex portion 51b, the left and right extending portions 51d, and the trunk portion 52 are formed. And a meshing recess 51c.

In this case, the outer side surfaces of the left and right extending portions 51d and the outer peripheral surface of the base portion 51a are formed as a continuous and smooth surface. In addition, a part of a low-order part 52c described later is formed in the left extension part 51d on the element upper surface side.

The trunk portion 52 of the fourth embodiment is formed with a larger overall dimension in the element thickness direction between the upper surface and the lower surface than the base portion 51 a of the meshing head 51, and between the meshing recess 51 c and the crotch portion 53. It has a central region 52a disposed in the sandwiched area and outer edge regions 52b disposed on the left and right sides of the central region 52a. The central region 52a of the trunk portion 52 has an upper surface and a lower surface that are parallel to each other, and a front end surface that constitutes a part of the inner wall surface of the meshing recess 51c.

In the outer edge region 52b on the left side of the upper surface of the trunk portion 52, a lower level portion 52c is formed in which the element thickness dimension on the upper surface side in the outer edge area 52b is smaller than the element thickness dimension on the upper surface side in the central area 52a. Has been. On the other hand, the lower portion 52c is not formed in the right outer edge region 52b on the upper surface of the trunk portion 52 and the left and right outer edge regions 52b on the lower surface, and the upper surface and the lower surface in these outer edge regions 52b are formed in the central region 52a. Are formed on the same plane as the upper and lower surfaces.

In this case, the lower portion 52c formed in the outer edge region 52b on the left side of the upper surface is formed in a concave shape in a part of the outer edge region 52b including the ridge line portion. The lower portion 52c has a first inclined surface (bottom surface) inclined downward toward the outside in the element width direction, and a triangular shape formed so as to incline upward from the first inclined surface toward the front. 2 inclined surfaces and a third inclined surface formed in a triangular shape so as to incline backward from the first inclined surface, and the element length direction in the low-order portion 52c as it approaches the ridge line portion The area of the meshing head 51 (left extension part 51d) and the area of the leg part 54 are formed so as to extend.

Further, also in the fastener element 50 of the fourth embodiment, by changing the shape of the press surface in the mold 22 of the first embodiment shown in FIG. It is manufactured using the same method as the manufacturing method of the described fastener element.

The slide fastener configured using the fastener element 50 according to the fourth embodiment is similar to the first to third embodiments described above in that the slider 4 having the stop mechanism by the stop pawl 6 is used as the fastener stringer. When the element row is stopped, the stop state of the slider 4 can be held by the stop claw 6.

Further, when the sliding operation of the slider 4 is started by pulling the pull 9, the lower claw portion 52 c formed on the body portion 52 of the fastener element 50 is used to engage the stop claw portion 6 a with the fastener element 50. Can be released smoothly and the slider 4 can be started smoothly.

As described above, the fastener element 50 according to the fourth embodiment is configured such that the lower portion 52c is formed only in the left outer edge region 52b on the upper surface of the trunk portion 52. The lower portions 52c can be formed symmetrically in the left and right outer edge regions 52b, or the lower portions 52c can be formed in the left and right outer edge regions 52b arranged on the upper and lower surfaces of the body portion 52, respectively. .

FIG. 20 is a perspective view showing a metal fastener element according to the fifth embodiment.
The fastener element 60 according to the fifth embodiment includes a meshing head 61, a trunk portion 62 disposed on the rear end side of the meshing head 61, and a branching and extending from the rear end of the trunk portion 62 via the crotch portion 63. And a pair of left and right leg portions 64.

The meshing head 61 includes a base portion 61a having a constant overall dimension in the element thickness direction between the upper surface and the lower surface, a meshing convex portion (not shown) protruding from the lower surface side of the base portion 61a, and an upper surface of the base portion 61a. And the meshing convex portion is arranged on the lower surface side of the base portion 61a so as to correspond to the position of the meshing concave portion 61c formed on the upper surface side of the base portion 61a. ing.

The body 62 is arranged from the bottom edge side position of the meshing recess 61 c to the position of the crotch 63 in the element length direction (front-rear direction), and is sandwiched between the meshing recess 61 c and the crotch 63. A central region 62a disposed on the left side, and an outer edge region 62b disposed on the left and right sides of the central region 62a. Moreover, the center area | region 62a of the trunk | drum 62 has a mutually parallel upper surface and lower surface, and the front-end surface which comprises a part of inner peripheral surface of the meshing recessed part 61c.

In this case, since the maximum dimension in the element width direction of the crotch part 63 is set to be smaller than the maximum dimension in the element width direction of the meshing recess 61c, the central region 62a of the trunk part 62 has a crotch part in the trunk part 62. This is the central portion area partitioned with the same dimension in the element width direction as the maximum dimension in the element width direction in 63.

Further, in the left and right outer edge regions 62b on the upper surface side of the body portion 62, a low-order portion 62c having an upper surface at a position lower than the upper surface of the central region 62a with respect to the element thickness direction is formed symmetrically. Note that the lower portion 62c is not formed in the left and right outer edge regions 62b on the lower surface side of the body portion 62, and the lower surface of the outer edge region 62b is formed at the same position as the lower surface of the central region 62a with respect to the element thickness direction. Yes.

In this case, the lower portion 62c formed in the left and right outer edge regions 62b on the upper surface side is formed in a concave shape in a part of the outer edge region 62b including the ridge line portion. In addition, each low-order part 62c is arranged at the bottom face inclined downward toward the outer side in the element width direction, the step part face that is arranged at the boundary part between the trunk part 62 and the meshing head part 61, and orthogonal to the element length direction, and the bottom face And a rear inclined surface formed in a triangular shape so as to be inclined upward.

The pair of leg portions 64 have an upper surface and a lower surface parallel to each other, and the overall dimension in the element thickness direction between the upper surface and the lower surface of the leg portion 64 is the element thickness direction in the base portion 61 a of the meshing head 61. The overall dimensions and the overall dimensions in the element thickness direction in the central region 62a of the body portion 62 are set.

The fastener element 60 of the fifth embodiment is obtained by slicing a metal wire having a substantially Y-shaped cross-section called a Y bar with a predetermined thickness, and pressing the element material obtained by slicing the element material. It is manufactured by forming a meshing convex part, a meshing concave part 61c, and a low-order part 62c.

Alternatively, the fastener element 60 of the fifth embodiment is subjected to press processing after pressing a metal flat wire to form the meshing convex portion, the meshing concave portion 61c, and the low-order portion 62c at a predetermined pitch. It can also be manufactured by punching out a rectangular wire portion along the outer peripheral shape of the fastener element 60.

The slide fastener constructed using the fastener element 60 of the fifth embodiment is similar to the first to fourth embodiments described above in that the slider 4 having the stop mechanism by the stop pawl 6 is used as the fastener stringer. When the element row is stopped, the stop state of the slider 4 can be held by the stop claw 6.

Further, when the sliding operation of the slider 4 is started by pulling the pull 9, the engagement between the stop claw portion 6 a and the fastener element 60 is performed by using the lower portion 62 c formed on the body portion 62 of the fastener element 60. Can be released smoothly and the slider 4 can be slid smoothly.

As described above, the fastener element 60 of the fifth embodiment is configured such that the lower portion 62c is formed in the left and right outer edge regions 62b on the upper surface side. For example, the fastener element includes the left and right outer edges on the upper surface side. The lower portion 62c may be formed only on one side of the region 62b, or the lower portion 62c may be formed on the left and right outer edge regions 62b arranged on the upper and lower surfaces of the body portion 62, respectively. May be.

DESCRIPTION OF SYMBOLS 1 Slide fastener 2 Fastener stringer 2a Core string part 3 Element row | line | column 4 Slider 4a 1st slider 4b 2nd slider 5 Slider fuselage 5a Upper blade 5b Lower blade 5c Guide pillar 5d Flange part 5e First attachment pillar part 5f Second attachment Column portion 5g Claw hole 5h Recess 6 Stop claw 6a Stop claw portion 6b Locking piece portion 7 Cover member 8 Elastic member (leaf spring member)
9 Pulling 10 Fastener element 10a, 10b Fastener element 11 Engagement head 11a Base 11b Engagement protrusion 11c Engagement recess 11d Extension part 12 Trunk part 12a Central area 12b Outer edge area 12c Lower position part 13 Crotch part 14 Leg part 21 Flat wire 22 Gold Type 30 Fastener element 32 Body portion 32a Central region 32b Outer edge region 32c Lower portion 40 Fastener element 42 Body portion 42a Central region 42b Outer edge region 42c Lower portion 50 Fastener element 51 Engagement head 51a Base 51b Engagement protrusion 51c Engagement recess 51d Extension Part 52 trunk 52a central region 52b outer edge Band 52c low portion 53 crotch 54 leg 60 fastener elements 61 coupling head 61a base 61c coupling concave portion 62 the body portion 62a the central region 62b outer edge region 62c low portion 63 crotch portion 64 leg

Claims (9)

A trunk portion (12, 32, 42, 52, 62) having a first principal surface and a second principal surface, and a meshing convex portion arranged on one end side of the trunk portion (12, 32, 42, 52, 62) (11b, 51b) and a meshing head (11, 51, 61) having a meshing recess (11c, 51c, 61c), and a crotch portion on the other end side of the body (12, 32, 42, 52, 62) A pair of left and right legs (14, 54, 64) branched and extended via (13, 53, 63), and the body (12, 32, 42, 52, 62) A central region (12a, 32a, 42a, 52a, 62a) disposed in a range sandwiched between the recess (11c, 51c, 61c) and the crotch portion (13, 53, 63), and the central region (12a , 32a, 42a, 52a, 62a) metal fastener elements (10, 30, 40, 50, 60) having left and right outer edge regions (12b, 32b, 42b, 52b, 62b) arranged on the outer side in the width direction Because
Left and right outer edge regions (12b, 32b, 42b, 52b, 62b) on the first main surface side in the trunk portion (12, 32, 42, 52, 62), and left and right outer edge regions on the second main surface side (12b, 32b, 42b, 52b, 62b) at least one of the outer edge regions in the center portion in the element width direction of the body (12, 32, 42, 52, 62) with respect to the element thickness direction (12b, 32b, 42b, 52b, 62b) a low-level portion having a first main surface or a second main surface formed lower than the position of the first main surface or the second main surface on the same surface side ( 12c, 32c, 42c, 52c, 62c)
With respect to the element length direction, the edge position of the lower portion (12c, 32c, 42c, 52c, 62c) on the leg (14, 54, 64) side is the central region (12a, 32a, 42a, 52a, 62a) is set closer to the leg (14, 54, 64) than the edge position on the side of the meshing recess (11c, 51c, 61c) on the first main surface and the second main surface.
A metal fastener element characterized by that. The lower portion (12c) has an inclined surface that inclines downward so that a position in the element thickness direction on the first main surface or the second main surface gradually decreases toward the meshing head (11). The metal fastener element according to claim 1. 2. The lower portion (12 c, 32 c, 42 c, 62 c) is disposed on both left and right outer edge regions (12 b, 32 b, 42 b, 62 b) on the first main surface side or the second main surface side. Or the metal fastener element of 2 description. The lower portion (12c, 32c, 42c) is composed of left and right outer edge regions (12b, 32b, 42b) on the first main surface side and left and right outer edge regions (12b, 32b, 42b) on the second main surface side. The metal fastener element according to any one of claims 1 to 3, wherein the metal fastener element is disposed on all of the metal fastener elements. The metal according to any one of claims 1 to 4, wherein the first main surface and the second main surface in the central region (12a, 32a, 42a, 52a, 62a) are formed as flat surfaces parallel to each other. Made fastener element. The meshing head (11, 51) includes a flat base (11a, 51a) formed thinner than the body (12, 32, 42, 52) and the base (11a, 51a). A mesh projection (11b, 51b) projecting from the first main surface and the second main surface, and a thickness greater than the base (11a, 51a) from the body (12, 32, 42, 52) The left and right extending portions (11d, 51d) having dimensions and extending toward the meshing head (11, 51) side, the meshing convex portions (11b, 51b), the left and right extending portions (11d, 51d) 51d) and a meshing recess (11c, 51c) formed surrounded by the body (12, 32, 42, 52),
The metal fastener element according to any one of claims 1 to 5. The metal fastener element according to claim 6, wherein the lower portion (12c, 32c, 42c, 52c) is disposed outside the position of the left and right extending portions (11d, 51d) in the element width direction. The meshing head (61) has a meshing convex part protruding from one of the first main surface and the second main surface, and a meshing concave part (61c) flange recessed in the other. The metal fastener element according to any one of claims 1 to 5. A metal fastener element (10, 30, 40, 50, 60) according to any one of claims 1 to 8, and a slider (4, 4a, 4b) rod provided with a stop mechanism by a stop pawl (6) rod. A slide fastener characterized by that.

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