Slider for slide fastener

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a slider for use in a slide fastener having coil-shape fastener elements formed of monofilament of thermoplastic resin such as polyamide and polyester, and to a slider for slide fastener enabling an easy operation for pulling the fastener stringers in opposite directions along the fastener tape in order to adjust a combining position of the right and left fastener stringers and capable of sliding the slider smoothly without fastener elements escaping from the slider or flanges biting into fastener elements.

2. Description of the Related Art

Conventionally, there is disclosed in the U.S. Pat. No. 2,909,824, a slider for slide fastener in which a top surface

111

, that is, a surface facing the fastener tape, of each of a pair of right and left flanges

105

for guiding a coil-shaped fastener elements disposed on upper and lower wing plates

102

,

103

of the slider for slide fastener, is formed with a wide width as shown in FIG.

15

.

Further, there is disclosed in the Japanese Utility Model Application No. 54-8885, a slider for slide fastener in which a pair of left and right flanges

205

for guiding coil-shaped fastener elements disposed on an inner face of upper wing plate

202

of the slider for slide fastener has an end face of a rear mouth

207

side thereof formed in a wide end face extending in the right/left direction of a body

201

, as shown in FIG.

16

.

Still further, there is disclosed in the Japanese Utility Model Application No. 61-1769, a slider for slide fastener in which, as shown in

FIG. 17

, a pair of right and left flanges

305

for guiding coil-shaped fastener elements disposed on upper and lower wing plates

302

,

303

of the slide for slide fastener is provided with a step

314

on each surfaces facing vertically, such that a protruded portion

313

is formed on each of top surfaces of the flanges

305

.

Each of the aforementioned conventionally known slider for slide fastener has a part of features which the present invention includes. A long coil-shaped fastener chain is cut to a desired length depending on a shape of an object to be attached such as a bag or clothes and sewed to an object to be attached. During the sewing, it is necessary to attach a slider, bottom stopper, front stopper and the like. At this time, when one fastener stringer is inserted through the slider, the other fastener stringer is inserted after that, and after both of the fastener stringers are combined at an arbitrary position, one fastener stringer is pulled strongly so that ends of both fastener stringers are matched at the same position, or when the right and left fastener stringers are pulled in the right/left direction, the coil-shaped fastener element is likely to escape over the flange out of a guide groove of a body. In the aforementioned conventional slider, any measure for avoiding this trouble has not been achieved.

When the slider is slid in a closing direction with a pulling force in the right/left direction being applied to the right and left fastener stringers which has not been completely closed, a front end of the flange may intrude into a gap between the adjacent fastener elements attached along a side edge of the fastener tape, so that the slider is unable to slide. In the aforementioned conventional slider, any measure for solving this problem has not been achieved either.

SUMMARY OF THE INVENTION

The present invention has been accomplished in views of the above described problems. The main object of the present invention is to provide a slider for slide fastener having a simple preventive mechanism for preventing the coil-shaped fastener elements from escaping from the slider or a front end of the flange from intruding into a gap between the fastener elements so that the slider is unable to slide, when both right and left fastener stringers are pulled strongly in opposite directions along the fastener tape to adjust the positions thereof, after the right and left fastener stringers are inserted through the slider when a fastener chain having the coil-shaped fastener elements is sewed to an object to be attach and the slider, bottom stopper, front stopper and the like are attached to the fastener chain, or when an operation for sliding the slider in a closing direction is carried out with a pulling force in the right/left direction applied to the engaged right and left fastener stringers.

Another object of the present invention is to provide a slider for slide fastener suitable for a fastener chain of a type of which fastener elements exist on one surface of a fastener tape; in which the coil-shaped fastener elements are sewed and attached to a single side surface, that is, to one surface of the fastener tape.

It is an object of the present invention to provide a slider for slide fastener suitable for a fastener chain of a type in which a core thread is inserted through the coil-shaped fastener elements and the fastener elements are woven into a side edge of the fastener tape while weaving the fastener tape, so that the fastener elements exist on both sides of the fastener tape.

It is another object of this invention to provide a slider for slide fastener for enabling an operation for pulling the fastener chain in opposite directions along the fastener tape smoothly and achieving a smooth slide of the slider and capable of preventing the coil-shaped fastener elements from escaping from of the slider by the pulling force in opposite directions along the fastener tape or in the right/left direction, by specifying a plan configuration of a pair of the right and left flanges provided so as to erect on the slider body.

It is also an object of the present invention to provide a slider for slide fastener in which a protruded portion is formed on a top surface of each of a pair of the right and left flanges erected on the slider body, so as to reduce the size of a gap between the flange and fastener tape, thereby making it possible to securely prevent the coil-shaped fastener elements from escaping from the slider when the fastener chain is pulled in opposite directions along the fastener tape or in the right/left direction with respect to the fastener tape.

Another object of the present invention is to provide a slider for slide fastener capable of effectively and appropriately preventing the coil-shaped fastener elements from escaping from the slider or the fastener tape from being damaged when the fastener chain is pulled in opposite directions along the fastener tape or in the right/left direction, by specifying a relational configuration of the protruded portion, and the protruded portion and the flat surface portion.

Still another object of the present invention is to provide a slider for slide fastener capable of preventing the flange from biting into an adjacent wale surface of a warp knitted fastener tape by specifying a relation between the wale of the warp knitted fastener tape and an erected flange provided on the slider body.

Finally, an object of the present invention is to provide a slider for slide fastener which the slider can be used not only for the coil-shaped fastener elements but also for a fastener chain having various types of fastener elements such as single-body type fastener elements, formed of metallic or thermoplastic resin single body and further in which the slider can be slid smoothly even when a pulling force in the right/left direction is applied to the right and left fastener stringers.

To achieve the above object, according to the first ,aspect, there is mainly provided a slider for slide fastener including a pair of right and left flanges

5

erected on one of upper wing plate and lower wing plate

2

,

3

of a slider body

1

toward the other upper wing plate

2

and lower wing plate

3

for guiding fastener elements

22

, a wide end face portion

10

having a wide configuration extending in the right/left direction of the body

1

being provided at a front end

8

located at the side of shoulders

6

of the body

1

of the flanges

5

, and a top surface

11

of the pair of the flange

5

including a flat surface portion

12

formed in parallel to the upper wing plate and lower wing plate

2

,

3

.

Preferably, there is provided a slider for slide fastener of a type in which the coil-shaped fastener elements

22

exist on a single side face of the fastener tape; a type in which a pair of the right and left flanges

5

erected on any one of the wing plates

2

,

3

of the slider body

1

toward the other wing plates

2

,

3

are provided on any one of the wing plates

2

,

3

.

Further preferably, there is provided a slider for slide fastener of a type in which the coil-shaped fastener elements

22

exist on both faces of the fastener tape; a type in which a pair of the right and left flanges

5

are provided on an inner face of each of the upper wing plate and lower wing plate

2

,

3

of the slider body

1

such that they are erected so as to face each other.

Still preferably, there is provided a slider for slide fastener including a pair of the right and left flanges

5

provided on the upper and lower wing plates

2

,

3

of the slider body

1

or any one of the upper and lower wing plates

2

,

3

, wherein a lateral width of the flange

5

at the front end

8

located at the shoulder

6

side of the slider body

1

is larger than the lateral width thereof at a rear end

9

located at a rear mouth

7

side of the slider body

1

, while the lateral width expands gradually from the rear mouth

7

side toward the front end

8

.

It is preferable that there is provided a slider for slide fastener including a pair of the right and left flanges

5

provided on the upper and lower wing plates

2

,

3

of the slider body

1

or any one of the upper and lower wing plates

2

,

3

, wherein the wide end face portion

10

having a wide configuration extending in the right/left direction of the slider body

1

is provided at the rear end

9

located at the rear mouth

7

of the slider body

1

, so that the flange

5

is entirely formed in a large width.

It is also preferable that there is provided a slider for slide fastener, including a pair of the right and left flanges

5

provided on the upper and lower wing plates

2

,

3

of the slider body

1

or any one of the upper and lower wing plates

2

,

3

, wherein a protruded portion

13

is formed on the flat surface portion

12

of the top surface

11

of each of the flanges

5

from the front end

8

located at the shoulder

6

side of the slider body

1

to a central portion of the flange

5

, such that the protruded portion

13

is protruded toward the opposing wing plates

2

,

3

.

It is further preferable that there is provided a slider for slide fastener including a pair of the right and left flanges

5

provided on the upper and lower wing plates

2

,

3

of the slider body

1

or any one of the upper and lower wing plates

2

,

3

, wherein the protruded portion

13

formed on the flat surface portion

12

of the top surface

11

of the flange

5

is formed so as to protrude along an inner edge of the flange

5

from the front end

8

of the shoulder

6

side of the body

1

of the flanges

5

.

It is still preferable that there is provided a slider for slide fastener including a pair of the right and left flanges

5

provided on the upper and lower wing plates

2

,

3

of the slider body

1

or any one of the upper and lower wing plates

2

,

3

, wherein a gentle slope portion

14

is formed on a border between the protruded portion

13

formed on the top surface

11

of the flange

5

and the flat surface portion

12

.

Further preferably, there is provided a slider for slide fastener including a pair of the right and left flanges

5

provided on the upper and lower wing plates

2

,

3

of the slider body

1

or any one of the upper and lower wing plates

2

,

3

, wherein the top surface

11

of the flange

5

has at least a width for covering a single wale

25

woven on a warp knitted fastener tape

24

.

Finally, it is preferable that there is provided a slider for slide fastener, wherein the wide end face portion

10

having a lateral width larger than a gap between adjacent fastener elements

22

of the fastener elements

22

attached to a side edge of a fastener tape is provided at the front end

8

of the flange

5

erected on the upper and lower wing plate

2

,

3

of the slider body

1

, so that ends of the fastener elements

22

are always in contact with the wide end face portion

10

at any situation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1

is a partially broken perspective view showing an inner face of an upper wing plate of a slider for slide fastener according to a first embodiment.

FIG. 2

is a sectional view showing an inner face of the upper wing plate of the slider.

FIG. 3

is a side view of the slider.

FIG. 4

is a sectional view showing an operating condition of the slider.

FIG. 5

is a partially broken perspective view showing an inner face of the upper wing plate of the slider for slide fastener according to a second embodiment.

FIG. 6

is a sectional view showing an inner face of the upper wing plate of the slider.

FIG. 7

is a side view of the slider.

FIG. 8

is a sectional view showing an operating condition of the slider.

FIG. 9

is a sectional view showing an inner face of the upper wing plate of the slider for slide fastener according to a third embodiment.

FIG. 10

is a side view of the slider for slide fastener according to a fourth embodiment.

FIG. 11

is a sectional view showing an inner face of the upper wing plate of the slider for slide fastener according to a fifth embodiment.

FIG. 12

is a bottom view showing the slider in use.

FIG. 13

is a side view of the slider for slide fastener according to a sixth embodiment.

FIG. 14

is a sectional view showing an operating condition of the slider.

FIG. 15

is a lateral sectional view of a known slider.

FIG. 16

is a sectional view showing an inner face of a lower wing plate of another known slider.

FIG. 17

is a perspective view of still another known slider.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, the embodiments of a slider for slide fastener of the present invention will be described in detail with reference to the accompanying drawings.

In the slider for slide fastener of the present invention, a body

1

of the slider is molded by die-casting, for example, zinc alloy, aluminum alloy or the like. In the slider body

1

, as shown in

FIG. 3

, an upper wing plate

2

and a lower wing plate

3

are connected via a guide post

4

. A flange

5

for guiding fastener elements

22

is provided on inner faces of both sides of the upper wing plate

2

so as to erect toward the lower wing plate

3

. In this flange

5

, as shown in

FIGS. 1 and 2

, a flat wide end face portion

10

having a laterally large width in plan configuration, extending linearly in a lateral direction of the body

1

, that is, in the right/left direction is provided at a front end

8

located at a shoulder

6

side of the body

1

, and the lateral width of a rear end

9

located at a rear mouth

7

side of the body

1

of the flange

5

is smaller. Therefore, the lateral width expands gradually from the rear end

9

toward the front end

8

. A top surface

11

of the flange

5

is formed as a flat surface portion

12

in parallel to the upper wing plate

2

or lower wing plate

3

, and a gap between the lower wing plate

3

and the flat surface portion

12

formed on the top surface

11

of the flange

5

is formed so as to be slightly larger than the thickness of the fastener tape.

In the slider body

1

, a pawl hole

17

is formed at the rear mouth

7

side with respect to the guide post

4

so that a locking pawl

19

of a plate spring

18

is capable of coming in/out. The locking pawl

19

is formed so that it is capable of coming in/out from a guide groove

20

for guiding the fastener elements

22

of the body

1

by a pulling operation of a pull tab

16

. Reference numeral

21

indicates a cover. This slider is suitable for a fastener chain of a type in which the fastener elements exist on a single surface of the fastener tape, with the coil-shaped fastener elements

22

attached on a single side edge of the fastener tape.

A characteristic of the slider of the present invention will be described below. When the fastener chain is being sewed to an object to be attached such as clothes, it is cut into a predetermined length and sewed. During this sewing, a slider, a bottom stopper, a front stopper and the like are attached. After one fastener stringer is inserted through the slider, the other fastener stringer is inserted through the slider, and then, both fastener stringers are meshed with each other at an arbitrary position, and after that, by pulling one fastener stringer, ends of the right and left fastener stringers are forced to match each other. In this operation, or when the slider is slid in a closing direction while a pulling force in the right/left direction is applied to the right and left fastener stringers, or when the right and left fastener stringers are pulled in the right/left direction, as shown in

FIG. 4

for example, the coil-shaped fastener elements

22

are pulled in the right/left direction at the front end

8

of the flange

5

of the slider, so that an interval between adjacent element leg portions of the coil-shaped fastener elements

22

is widened and consequently, it prevents the front end

8

of the flange

5

from climbing over an inverted portion

23

to intrude between the element leg portions, which causes an obstruction of a sliding of the slider.

To prevent the coil-shaped fastener elements

22

from escaping from the slider, the wide end face portion

10

, which the adjacent inverted portions

23

of the coil-shaped fastener elements

22

come into contact with, is provided at the front end

8

of the flange

5

, so that it is difficult for the front end

8

to climb over the inverted portion

23

and for the coil-shaped fastener elements

22

to escape from between the top surface

11

of the flange

5

and the lower wing plate

3

. Therefore, a conventional problem of the inverted portion of coil-shaped fastener elements intruding into a narrow front end of the flange and obstructing the slider to slide can be solved.

A slider according to a second embodiment will be described with reference to

FIGS. 5

to

8

. What is different from the aforementioned first embodiment is a configuration of the top surface

11

of the flange

5

provided to erect toward the lower wing plate on each inner face of both sides of the upper wing plate

2

of the slider body

1

. On the flat surface portion

12

of the top surface

11

of the flange

5

, a protruded portion

13

is provided along an inner edge from the wide end face portion

10

formed at the front end

8

of the flange

5

up to a central portion of the flange

5

, such that it is protruded further toward the lower wing plate

3

. This protruded portion

13

is protruded in a V-shape or an upside-down V-shape. A gentle slope portion

14

is formed on a border between the V-shaped protruded portion

13

and the flat surface portion

12

so as to reduce a friction between the protruded portion

13

and fastener tape, thereby achieving a smooth sliding of the slider.

In this slider as shown in

FIG. 7

, the protruded portion

13

is formed on a front half of the flat surface portion

12

on the top surface

11

of the flange

5

such that it is protruded toward the lower wing plate

3

. Thus, the gap between the top surface

11

of the flange

5

and the lower wing plate

3

is smaller than the slider of the first embodiment, so that intrusion and fitting of the front end

8

of the flange

5

into the inverted portion

23

of the coil-shaped fastener elements

22

can be prevented more securely.

Further, as shown in

FIG. 8

, since the protruded portion

13

is formed along the inner edge of the flat surface portion

12

from the front end

8

of the flange

5

to the central portion, a ratio of the area occupied by the protruded portion

13

in the flat surface portion

12

is decreased, so that a frictional resistance which is caused by a contact between the protruded portion

13

and the fastener tape can be minimized when the slider is slid.

In a slider according to a third embodiment shown in

FIG. 9

, the flanges

5

are provided on an inner face of both sides of the upper wing plate

2

of the slider body

1

such that they are erected toward the lower wing plate

3

. The protruded portion

13

is formed so as to protrude toward the lower wing plate

3

on the flat surface portion

12

on the top surface

11

of the flange

5

. This protruded portions

13

are provided on the flat surface portion

12

from the wide end face portion

10

formed at the front end

8

of the flange

5

up to the central portion of the top surface

11

of the flange

5

such that they are entirely protruded in parallel to the upper wing plate

2

.

Also in this slider, since the protruded portions

13

are formed on a front half portion of the flat surface portion

12

on the top surface

11

of the flange

5

such that they are protruded toward the lower wing plate

3

, a gap between the top surface

11

of the flange

5

and the lower wing plate

3

becomes smaller than the slider of the first embodiment. As a result, intrusion and fitting of the front end

8

of the flange

5

into the inverted portion

23

of the coil-shaped fastener elements can be prevented more securely.

In a slider according to a fourth embodiment shown in

FIG. 10

, the flanges

5

erected toward the wing plates

2

,

3

facing each other are provided on inner faces on both sides of each of the upper wing plate

2

and lower wing plate

3

. Then, the protruded portion

13

is provided on the flat surface portion

12

along an inner edge of the top surface the flange

5

such that it is protruded in parallel to the upper wing plate

2

and lower wing plate

3

in a V-shape or an upside-down V-shape. The protruded portion

13

is formed from the wide end face portion

10

formed at the front end

8

of the flange

5

up to the central portion on the top surface

11

of the flange

5

such that it is protruded.

This type of slider is suitable for a fastener chain of a type in which the coil-shaped fastener elements

22

exist on both surfaces of the fastener tape so as to be projected therefrom; type of a fastener chain in which a fastener element row with a core thread inserted through the coil-shaped fastener elements

22

is woven into one side edge of the fastener tape while the fastener tape is being woven.

Also in this slider, the protruded portion

13

is provided along the inner edge of the front half portion of the flat surface portion

12

on the top surface

11

of the flange

5

of each of the upper wing plate

2

and lower wing plate

3

so as to protrude toward the wing plates

2

,

3

which face each other. Therefore, a gap between the top surface

11

of one flange

5

and the top surface

11

of the other opposing flange

5

is smaller than the slider of the first embodiment, so that intrusion and fitting of the front end

8

of the flange

5

into the inverted portion

23

of the coil-shaped fastener elements

22

can be prevented more securely.

In a slider according to a fifth embodiment shown in

FIG. 11

, the flange

5

is provided on the inner face of both sides of the upper wing plate

2

of the slider body

1

so as to erect toward the lower wing plate

3

. This flange

5

is formed from the wide end face portion

10

formed at the front end

8

up to the rear mouth

7

of the body

1

such that a lateral width of the entire flange

5

is substantially the same. By also forming the wide end face portion

10

having a large width at the rear mouth

9

, the flat surface portion

12

having a large width is formed on the entire top surface

11

of the flange

5

.

Because this slider has the wide end face portion

10

at the rear end

9

as well as the front end

8

of the flange

5

, when the right and left fastener stringers are pulled in opposite directions along the fastener tape, the wide end face portion

10

of the rear end

9

may also come into contact with the adjacent inverted portions

23

of the coil-shaped fastener elements

22

similar to the front end

8

. Consequently, the rear end

9

as well as the front end

8

never climbs over the inverted portion

23

of the coil-shaped fastener elements

22

at the rear and front portions of the flange

5

to fit into the adjacent element leg portions. Thus, the operation of the slider is not obstructed.

This slider is suitable for a fastener chain of a type in which a fastener tape

24

is a warp knitted fastener tape

24

, and the coil-shaped fastener elements

22

are sewed on the fastener tape

24

in which wales

25

are knitted on a surface thereof as shown in FIG.

12

. The top surface

11

of the flange

5

having a large lateral width faces the surface of the wale

25

of the warp knitted fastener tape

24

so that it covers the wale

25

.

Therefore, when the slider slides over the warp knitted fastener tape

24

, a face-contacting portion between the top surface

11

of the flange

5

of the slider and the surface of the wale

25

can be secured sufficiently so that the flange

5

and wale

25

support each other, so that an outer edge portion or an inner edge portion of the flange

5

never bites into a groove portion between the adjacent wales

25

of the warp knitted fastener tape

24

. As a result, the slider is capable of sliding smoothly and further, this slider never gives such a damage to the warp knitted fastener tape

24

as thread breakage.

Although a scope of application of the slider has been described about a fastener chain provided with the coil-shaped fastener elements formed of thermoplastic resin monofilament, the slider of the present invention is not restricted to the coil-shaped fastener elements, but may be applied as a slider for a fastener chain in which a single-body type fastener elements each formed of a metallic or thermoplastic resin single body is attached to a side edge of the fastener tape. Although the fastener chain having the single-body type fastener elements cannot be operated such that the right and left fastener stringers are pulled in opposite directions along the fastener tape, this slider is preferable as a slider for sliding the slider to close the slide fastener attached to an opening of a bag filled with plenty of contents, that is, when a pulling force in the right/left direction is exerted on the engaged right and left fastener stringers.

In a slider to be used for a fastener chain having the single-body type fastener elements, as shown in

FIGS. 13 and 14

, the flanges

5

are erected on the inner faces on both sides of each of the upper wing plate

2

and lower wing plate

3

of the slider body

1

toward the opposing wing plates

2

,

3

. In each of the flanges

5

, the flat surface portion

12

with the flat top surface

11

is formed from the front end

8

to the rear end

9

and the flat wide end face portion

10

is formed at the front end

8

of each of the flanges

5

which face each other vertically such that it is extended in the right/left direction of the body

1

.

This wide end face portion

10

is formed with a lateral width larger than a gap between the adjacent fastener elements

22

of the single-body type fastener elements

22

injection-molded with thermoplastic resin on a side edge on the fastener tape. Therefore, when the slider is slid in a closing direction when a pulling force in the right/left direction is exerted to the right and left fastener stringers as shown in

FIG. 14

, end edges of the fastener elements

22

come into contact with the wide end face portion

10

at the front end

8

of the flange

5

successively. Thus, even when the slider is slid by force, a conventional problem that the flange of the slider biting into a gap between the fastener elements so that the slider is unable to slide never occurs. Further, it is permissible to provide the flat surface portion

12

on the top surface

11

of the flange

5

with the protruded portion

13

described in the previous embodiment.

The slider for slide fastener of the present invention has the above described feature, and with such a feature, the following effects can be achieved.

According to the present invention, there is provided a slider for slide fastener including a pair of flanges

5

erected on one of upper wing plate

2

and lower wing plate

3

of a slider body

1

toward the other one thereof, a wide end face portion

10

extending in the right/left direction of the body

1

is provided at a front end

8

of each of the flanges

5

, and a top surface

11

of the flange

5

is provided with a flat surface portion

12

in parallel to the upper wing plate

2

and lower wing plate

3

. Therefore, when both fastener stringers are pulled strongly in opposite directions along the fastener tape or when the slider is slid in a closing direction with a pulling force in the right/left direction being applied, the adjacent inverted portions

23

of the coil-shaped fastener elements or an end edge of an single-body type fastener elements independently made of metal or thermoplastic resin come into contact with the wide end face portion

10

of the flange

5

, thereby preventing the front end

8

of the flange

5

from climbing over the inverted portions

23

of the coil-shaped fastener elements and fitting into the adjacent fastener elements

22

, or the front end

8

of the flange

5

from biting into a gap between the single-body type fastener elements obstructing a slide of the slider, or the coil-shaped fastener elements from escaping from the slider.

Further, there is provided a slider for slide fastener, wherein a pair of the flanges

5

erected on any one of the wing plates of the upper and lower wing plates

2

,

3

toward the other wing plate

2

,

3

are provided on one of the wing plates

2

,

3

. Therefore, it is possible to easily provide a slider suitable for a fastener chain in which the coil-shaped fastener elements are attached to a single side face of the fastener tape.

There is also provided a slider for slide fastener, wherein a pair of the flanges

5

are provided on an inner face of each of the upper wing plate

2

and lower wing plate

3

such that they erect to oppose each other. Therefore, it is possible to easily provide a slider suitable for a fastener chain in which the coil-shaped fastener elements are attached to one side of the fastener tape such that they project on both surfaces.

Further, there is provided a slider for slide fastener, wherein a lateral width of the flange

5

at a front end

8

located at a shoulder

6

side thereof is larger than the lateral width thereof at a rear end

9

located at a rear mouth

7

side, while the lateral width expands gradually from the rear end

9

toward the front end

8

. Therefore, an escape of the fastener elements from the shoulder

6

side of the slider is prevented and an area of the flat surface portion

12

formed on the top surface

11

of the flange

5

is minimized so as to reduce a frictional resistance which is caused by a contact between the flat surface portion

12

and the fastener tape during a sliding of the slider.

Still further, there is provided a slider for slide fastener, wherein the wide end face portion

10

extending in the right/left direction of the body

1

is provided at the rear end

9

located at a rear mouth

7

side of the flange

5

, while the flange

5

is entirely formed in a large width. Therefore, when the right and left fastener stringers are pulled strongly in opposite directions along the fastener tape, the inverted portion

23

of the coil-shaped fastener elements comes into contact with the wide end face portion

10

at the rear end

9

of the flange

5

thereby preventing the coil-shaped fastener elements from escaping from the rear end

9

of the flange

5

.

Furthermore, there is provided a slider for slide fastener, wherein a protruded portion

13

is formed on the flat surface portion

12

of the top surface

11

of each of the flanges

5

from the front end

8

located at the shoulder

6

side to a central portion of the flange

5

, such that the protruded portion

13

is protruded toward the opposing wing plates

2

,

3

. Therefore, a gap between the flange

5

and fastener tape is narrowed thereby preventing securely the coil-shaped fastener elements from escaping from the front end

8

of the flange

5

when the fastener chain is pulled strongly in opposite directions or in the right/left direction.

There is also provided a slider for slide fastener, wherein the protruded portion

13

formed on the top surface

11

of the flange

5

is formed along an inner edge of the flange

5

from the front end

8

thereof. Therefore, an area of the protruded portion

13

facing the fastener tape is decreased thereby a frictional resistance when sliding the slider caused by a contact between the fastener tape and protruded portion

13

being reduced so as to achieve a smooth sliding of the slider.

Further, there is provided a slider for slide fastener, wherein a slope portion

14

is formed on a border between the protruded portion

13

formed on the top surface

11

of the flange

5

and the flat surface portion

12

. Therefore, the top surface

11

of the flange

5

is a smooth surface without an extreme step, so that the sliding operation of the slider can be achieved smoothly and further the fastener tape is never damaged.

Still further, there is provided a slider for slide fastener, wherein the flange

5

is formed such that the top surface

11

thereof faces the wale

25

of the warp-knitted fastener tape

24

, and the top surface

11

has a lateral width which can cover the wale

25

. Therefore, an outer edge or inner edge of the flange

5

never bites into a groove between the adjacent wales

25

of the warp knitted fastener tape

24

during a sliding of the slider, thereby preventing securely the warp knitted fastener tape from being damaged and achieving a smooth sliding operation of the slider.

Furthermore, there is provided a slider for slide fastener, wherein the wide end face portion

10

provided at the front end

8

of the flange

5

has a lateral width larger than a gap between adjacent fastener elements

22

of the fastener elements

22

attached to a side edge of a fastener tape. Therefore, this slider can be used not only for the coil-shaped fastener elements but also the fastener chain having various kinds of fastener elements, such as single-body type fastener elements each formed of metallic or thermoplastic resin single body.

Further, even when a pulling force in the right/left direction is applied to the right and left fastener stringers, the flange

5

never bites into a gap between the adjacent fastener elements

22

. Therefore, the conventional problem that the flange biting into the gap between the fastener elements thereby stopping a sliding motion of the slider is prevented, so that the slider can be operated smoothly. Therefore, there are remarkable effects obtained by this invention.

Number	Name	Date	Kind
2591948	Lawson	Apr 1952	A
3011251	McNamara	Dec 1961	A
3604070	Vorsteher	Sep 1971	A
3818549	Moertel	Jun 1974	A
3872553	Moertel	Mar 1975	A
4133084	Yoshida	Jan 1979	A
4409705	Yuunaga	Oct 1983	A
4455722	Oda	Jun 1984	A
4562622	Takabatake	Jan 1986	A
5497535	Kloor	Mar 1996	A

Number	Date	Country
1008966	May 1952	FR
1176652	Jan 1970	GB

Slider for slide fastener

Information

Patent Number

Date Filed

Date Issued

Inventors

Original Assignees

Examiners

Agents

CPC

US Classifications

Field of Search

US

International Classifications

Abstract

Description

Claims

Priority Claims (1)

US Referenced Citations (10)

Foreign Referenced Citations (2)