Slider for slide fastener with locking device

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a slider having a locking mechanism for use in a slide fastener, and more particularly to a slider for slide fastener with locking device, in which a sheet-like spring having a locking pawl is elastically deformed by raising or laying operation of its pull so as to engage the locking pawl with a fastener-element row, thereby activating locking function.

2. Description of the Related Art

Conventionally, a slide fastener is mounted to an opening of clothes of every kind, and the opening is opened or closed by separating or meshing its fastener-element rows by means of a sliding operation of a slider. Further, in order to protect the fastener-element rows from being separated without necessity, it has been known to use a slider having a locking device.

As a slider for slide fastener with locking device, for example, a slider shown in

FIG. 11

has been known. The slider is comprised of a body

1

′, a sheet-like spring

2

′ and a pull

3

′. In the body

1

′, one-side ends of an upper wing plate and a lower wing plate, which are disposed in parallel, are connected by a guide post

7

′ so as to form an element guide groove

13

′ between the both wing plates. The aforementioned sheet-like spring

2

′ is mounted on a top face of the upper wing plate and is provided at one end thereof with a locking pawl

25

′, which is adapted to project into the element guide groove

13

′ through a pawl hole formed in the upper wing plate while it is provided at the other end with a spring portion which is adapted to be fixed in an accommodation groove formed at a front face of the guide post

7

′. Further, the pull

3

′ is provided at one end thereof with a grip portion

38

′ which can be gripped with fingers while it is provided at the other end with an axle having a cam

39

′ disposed between the body

1

′ and the sheet-like spring

2

′.

Elastic force is always applied to the axle of the pull

3

′, thereby making it possible to keep the pull

3

′ laid. Further, when the pull

3

′ is raised to rotate the axle, the axle deforms the sheet-like spring

2

′ elastically and pushes it up, so that the locking pawl

25

′ can be retracted from the element guide groove

13

′.

Particularly, the above-described slider for the slide fastener having the locking device is mounted on a slide fastener sewed to trousers or skirt made of jeans.

Because the jeans fabric is hard and, mechanical impact is applied to the clothes so as to improve its flexibility, feeling to the touch or the like, in order to overcome such a problem that the clothes made of jeans fabric gives an uncomfortable feeling to a wearer as it is. For example, a so-called stone wash operation is carried out, in which a stone of an appropriate size is thrown into a rotation drum together with the clothes to which the aforementioned slide fastener is sewed and then the clothes is struck by the stone when the rotation drum is rotated, or in which the clothes is thrown into a rotation drum provided with a multiplicity of protrusions on an inner periphery thereof and then the clothes is struck by the protrusions in accordance with the rotation of the rotation drum.

After the aforementioned slide fastener is sewed onto clothes such as trousers and skirt, usually the pull

3

′ is laid to the side of a front end of the body

1

′ so that most part of the pull

3

′ is protruded from the front end of the body

1

′ as shown in FIG.

11

. If mechanical impact is applied under this condition, a load is applied to the pull

3

′ in a horizontal direction, namely a direction of pressing the pull

3

′ toward the axle, or in a vertical direction, namely a direction of pressing down the grip portion

38

′ of the pull

3

′. Because at this time, the axle of the pull

3

′ raises the locking pawl

25

′ and at the same time the grip portion

38

′ of the pull

3

′ comes into contact with a bent portion

31

′ of the sheet-like spring

2

′ to press it excessively, plastic deformation is generated in the sheet-like spring

2

′. If this state is induced, there occurs such a problem that even if it is intended to lay the pull

3

′ to the side of the rear end of the body

1

′ so as to activate the locking function, the locking function may not be activated because the locking pawl

25

′ remains retreated from the element guide groove

13

′. This problem can occur not only when the aforementioned stone wash operation is carried out, but also when clothes is washed with a washing machine with its pull being laid to the side of the front end of the body at home.

SUMMARY OF THE INVENTION

The present invention has been achieved in views of the above-described problems and a point of the present invention is to improve a sheet-like spring so as not to induce plastic deformation. According to a slider with a locking device of the present invention, plastic deformation of the sheet-like spring is prevented even if a load is applied to the pull in a horizontal direction or a vertical direction when the pull is laid to the side of a front end of a body of the. Thus, even if the slider is employed in jeans and the jeans is washed or handled roughly at home, the slider is free from being damaged so that it can exert its locking function accurately for a long period. Further, the present invention provides the slider for slide fastener with locking device with a simple structure and an excellent function.

Furthermore, in the slider with locking device having a locking mechanism in which the sheet-like spring comprises a bent portion bent in the same direction as a locking pawl, even if a load in the horizontal direction or in the vertical direction is applied to the pull when the pull is laid to the side of the front end of the body, no plastic deformation is induced in the bent portion of the sheet-like spring, so that it is capable of exerting its locking function accurately. Further, because the bent portion is capable of being elastically deformed sufficiently when the load is applied, it is possible to provide a slider for slide fastener with locking device in which its locking device is free from being damaged for a long period.

Still further, because in the slider with locking device, the pull is formed in an appropriate shape for protecting the sheet-like spring having the locking pawl from being plastically deformed, an excellent locking function can be exerted for a long period.

Still further, by restricting a range of a rising action of the sheet-like spring having the locking pawl, which is generated when the pull is laid to the side of the front end of the body and pressurized, the sheet-like spring can be prevented securely from being plastically deformed.

BRIEF DESCRIPTON OF THE DRAWINGS

FIG. 1

is a perspective view of a slider for slide fastener with locking device.

FIG. 2

is a front view showing a state in which a pull of the slider is laid backward.

FIG. 3

is a front view showing a state in which the pull of the slider is laid forward.

FIG. 4

is a longitudinal sectional view showing a state in which the pull of the slider is laid forward and the load is applied.

FIG. 5

is a front view of a modified example of the slider with locking device having a pull showing a state in which the pull is laid backward.

FIG. 6

is a front view showing a state in which the pull of the modified example is laid forward.

FIG. 7

is a longitudinal sectional view showing a state in which the pull of the modified example is laid forward.

FIG. 8

is a longitudinal sectional view showing a state in which the pull of the modified example is laid forward and the load is applied.

FIG. 9

is an exploded perspective view of a slider for slide fastener with locking device according to another embodiment.

FIG. 10

is a longitudinal sectional view showing a state in which the pull of the slider is laid backward.

FIG. 11

is a longitudinal sectional view showing a state in which a pull of a conventional slider with locking device is laid forward.

FIG. 12

is a longitudinal sectional view showing a state in which a spring of the slider is deformed plastically.

DESCRITPTION OF EMBODIMENTS

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

The slider for slide fastener with locking device of the present invention is an ordinary type slider having a locking mechanism as shown in

FIGS. 1

to

4

and is a sturdy one to be used for jeans. The slider is comprised of three members, namely a body

1

, a sheet-like spring

2

and a pull

3

, and these respective members are manufactured by processing metal such as copper-zinc alloy with pressing means.

The body

1

of the slider is formed of an upper wing plate

5

, a lower wing plate

6

and a guide post

7

for connecting the upper wing plate

5

and the lower wing plate

6

. A pair of hook-like spring-receiving portions

9

, which are laterally arranged, are provided so as to protrude near a shoulder or a front end of the upper wing plate

5

in order to support protruded portions

29

of the sheet-like spring

2

. A guide portion

10

is provided so as to protrude near a rear opening or a rear end of the upper wing plate

5

such that it is inclined toward the rear opening or the rear end in order to guide an axle

37

of the pull

3

. A front end of the guide portion

10

is bent toward the rear opening to form an engaging portion

11

for engaging with an engaging hole

28

provided in the sheet-like spring

2

. Further, a pawl hole

12

is formed at a base portion behind the guide portion

10

for insertion of a locking pawl

25

such that the locking pawl

25

can invade into or retreat from an element guide groove

13

freely. Furthermore, an accommodation groove

14

having a V-shaped or U-shaped section is provided at a front face of the guide post

7

such that it can accommodate a drooping portion

26

of a spring portion

30

of the sheet-like spring

2

.

The sheet-like spring

2

is formed in substantially inverted U shape and it has the locking pawl

25

at one end thereof while having a narrow drooping portion

26

at the other end thereof. A wide base plate

27

is provided a middle of the sheet-like spring

2

. The base plate

27

is formed so as to be protruded upward so that the axle

37

having a cam

39

of the pull

3

can be accommodated therein. A part extending from the base plate

27

up to the locking pawl

25

is gently bent, where the engaging hole

28

, which is capable of loosely engaging with the engaging portion

11

of the guide portion

10

formed on the upper wing plate

5

, is provided. A front end of the base plate

27

is formed horizontally and both ends thereof are cut out to form protruded portions

29

. The protruded portions

29

are formed so as to be capable of engaging the spring-receiving portions

9

protruded from the upper wing plate

5

. The narrow spring portion

30

is extended forward from a middle of the right/left protruded portions

29

provided on the base plate

27

and is bent at a middle portion thereof so as to form a bent portion

31

. The drooping portion

26

is formed ahead of the bent portion

31

and held in the accommodation groove

14

provided in the guide post

7

of the body

1

. In addition, a dent groove

32

is provided in a center of the spring portion

30

so as to intensify its elasticity.

The pull

3

is formed of a substantially rectangular plate. The axle

37

is provided at an end of the pull

3

while a grip portion

38

is provided at the other end thereof with a gap from the axle

37

. The cam

39

is formed integrally on a bottom side of the axle

37

such that it is protruded downward. When the pull

3

is mounted on the body

1

and is laid to the side of the shoulder or the front end, the base plate

27

of the sheet-like spring

2

is pushed up so that the locking pawl

25

is raised from the element guide groove

13

. Further, an inverted-T shaped through hole

40

, in which the side of the pull

3

toward the axle

37

is expanded, is provided between the axle

37

and the grip portion

38

. Furthermore, a concave portion

41

formed in the center of the through hole

40

such that it is capable of avoiding the bent portion

31

of the sheet-like spring

2

placed on a top face of the guide post

7

of the body

1

when the pull

3

is laid to the side of the front end of the body

1

. Further, even when the pull

3

is laid to the side of the front end of the body

1

so that a load in the horizontal direction or the vertical direction is applied to the pull

3

, the concave portion

41

does not contact the bent portion

31

of the sheet-like spring

2

and a gap is formed between the grip portion

38

and the bent portion

31

. Furthermore, when a load is applied to the pull

3

, extended portions

42

extended on both sides of the concave portion

41

can come into contact with base portions of the spring-receiving portions

9

protruded from the top face of the upper wing plate

5

, so as to receive the load applied to the pull

3

.

Next, assembly of the slider having the locking mechanism will be described. The axle

37

having the cam

39

of the pull

3

is placed between the spring-receiving portions

9

and the guide portion

10

protruded on the top face of the upper wing plate

5

of the body

1

. At this time, the axle

37

is placed such that the cam

39

of the pull

3

is directed downward and the pull

3

is laid toward the rear opening or the rear end of the body

1

. Then, the sheet-like spring

2

is disposed on a top face thereof. At this time, the protruded portions

29

are disposed under the spring-receiving portions

9

such that the base plate

27

of the sheet-like spring

2

covers the axle

37

, while the engaging hole

28

in the sheet-like spring

2

holds the engaging portion

11

of the distal end of the guide portion

10

and then, the drooping portion

26

of the spring portion

30

is inserted into the accommodation groove

14

formed at the front face of the guide post

7

of the body

1

and fixed thereto.

Further, it is permissible to fix the drooping portion

26

by crimping both sides of the accommodating groove

14

or it is permissible to provide a front end of the drooping portion

26

with protrusions protruded to the both sides and then engage them with concave portions incised in the both sides of the accommodating groove

14

. The locking pawl

25

of the sheet-like spring

2

fixed to the guide post

7

is always protruded into the element guide groove

13

in the body

1

such that it can invade into or retreat from the element guide groove

13

freely by the operation of the pull

3

. The assembled slider having the locking mechanism is mounted to a fastener chain. When with the pull

3

laid forward, the slider is pulled, the fastener chain is closed. When the slider is pulled with the pull

3

laid backward, the fastener is opened. The feature of the slider of the present invention is in solving such a problem that not when the pull

3

is laid to the side of the rear end of the body

1

but when it is laid to the side of the front end of the body

1

as shown in

FIG. 4

, a load is applied to the pull

3

in the horizontal direction or the vertical direction, and even if the axle

37

of the pull

3

is moved upward toward the guide portion

10

trying to push up the sheet-like spring

2

, the expanded portions

42

of the pull

3

come into contact with the base portions of the spring-receiving portions

9

so that the pull

3

cannot be moved further. Further, because there is always a gap between the grip portion

38

of the pull

3

and the bent portion

31

of the sheet-like spring

2

located within the concave portion

41

, plastic deformation never occurs in the bent portion

31

as it has been in a conventional case. Further, it is permissible to provide a gap between the bent portion

31

of the spring portion

31

and a top end of the guide post

7

so as to allow the bent portion

31

to be deformed plastically with a sufficient room.

(Modified Example)

FIGS. 5

to

8

show a modified example of the slider having the locking device in which the shapes of the slider and the pull

3

are different from the above-described slider. In this modified example, the configurations of the body

1

and the sheet-like spring

2

are the same. The pull

3

is provided with an axle

37

with which a cam

39

eccentric downward is formed integrally, at an end thereof while a grip portion

38

is formed on the other end. A through hole

40

, of which side toward the grip portion

38

is circular, is provided between the axle

37

and the grip portion

38

. The through hole

40

is formed such that it is be capable of avoiding the bent portion

31

of the spring portion

30

of the sheet-like spring

2

disposed on the top face of the guide post

7

when the pull

3

is disposed on the body

1

and laid to the side of the front end thereof. There is formed a gap between the grip portion

38

and the bent portion

31

when the pull

3

is disposed on the body

1

and laid to the side of the front end thereof.

Assembly of the slider is carried out in the same manner as the slider of the above-described embodiment. First, the pull

3

is mounted such that the cam

39

of the pull

3

is placed between the spring-receiving portions

9

and the guide portion

10

in a state that the cam

39

of the pull

3

is directed downward and the pull

3

is laid to the side of the rear end. When the sheet-like spring

2

is mounted on a top face of the pull

3

, the protruded portions

29

are disposed below the spring-receiving portions

9

such that the base plate

27

of the sheet-like spring

2

covers the axle

37

. Further, the engaging hole

28

of the sheet-like spring

2

holds the engaging portion

11

of the guide portion

10

and at the same time, the drooping portion

26

of the spring portion

30

is inserted into the accommodation groove

14

formed at the front face of the guide post

7

and fixed thereto.

In the assembled slider as shown in

FIGS. 6 and 7

, when the pull

3

is laid to the side of the front end of the body

1

, there exists a gap between a circular edge of the opening in the grip portion

38

of the pull

3

and the bent portion

31

of the spring portion

30

of the sheet-like spring

2

. If a load is applied to the laid pull

3

in the horizontal direction or in the vertical direction as shown in

FIG. 8

, the axle

37

of the pull

3

slides along the guide portion

10

so as to push up the base plate

27

of the sheet-like spring

2

. At this time, the engaging hole

28

in the sheet-like spring

2

comes into contact with the engaging portion

11

of the guide portion

10

, thereby blocking the locking pawl

25

from being raised further. When the locking pawl

25

is located at its rising limit position, there exists a gap between the grip portion

38

of the pull

3

and the bent portion

31

of the sheet-like spring

2

, so that the grip portion

38

never contacts the bent portion

31

to press the bent portion

31

, thereby making it possible to block the bent portion

31

from being plastically deformed. Further, when the load applied to the pull

3

is released, the sheet-like spring

2

can be elastically restored to its original state quickly. Namely, the sheet-like spring

2

may be elastically deformed in an effective manner for a long period.

(Second Embodiment)

FIGS. 9 and 10

show another embodiment of a slider with locking device. According to this embodiment, a hook-shaped protruded portion

17

is provided in a center of a shoulder portion or a front end of an upper wing plate

5

of a body

1

. This protruded portion

17

has an engaging protrusion

18

protruded horizontally from a center of a front end thereof such that it can invade into a hole portion

34

provided in a engaging tongue portion

33

of a sheet-like spring

2

. Contact portions

19

, which can make contact with the engaging tongue piece

33

of the sheet-like spring

2

, are formed on both sides of the engaging protrusion

18

at the front end of the protruded portion

17

. These contact portions

19

are formed to be vertical planes relative to a top face of the upper wing plate

5

. A through hole

20

, which communicates with an element guide groove

13

, is formed at a base portion of the protruded portion

17

. A supporting base

21

for supporting a forwardly-inclined sheet-like spring

2

is provided on both sides of the base portion of the protruded portion

17

.

A guide portion

10

is provided protrudedly on a center of a rear opening or a rear end of the upper wing plate

5

such that it is inclined backward. A front end of the guide portion

10

is bent to form an engaging portion

11

, so that it can loosely engage an engaging hole

28

of the sheet-like spring

2

. A pawl hole

12

, which leads to the element guide groove

13

, is provided at the base portion of the guide portion

10

. Further, an accommodation groove

14

, which is capable of accommodating a drooping portion

26

of a spring portion

30

of the sheet-like spring

2

, is provided at a front face of a guide post

7

. Substantially right-triangle-shaped engaging portions

22

, each of which has a horizontal bottom while it has an inclined top, are provided on both sides of the accommodation groove

14

, such that they can engage a protruded portion

35

protruded to both sides at a front end of the drooping portion

26

of the spring portion

30

of the sheet-like spring

2

.

The sheet-like spring

2

is formed in a substantially inverted U shape and has a locking pawl

25

at one end thereof while it has a narrow drooping portion

26

at the other end thereof. The protruded portion

35

is provided at a front end of the drooping portion

26

such that it is protruded to both sides thereof so that it engages the engaging portion

22

of the guide post

7

. An opening

36

is provided in a central base plate

27

of the sheet-like spring

2

. The engaging tongue piece

33

is provided such that it is extended forward from the opening edge of the opening

36

and bent downward. A hole portion

34

is provided in the center of the holding tongue piece

33

so that the engaging protrusion

18

of the protruded portion

17

is capable of loosely engaging the hole portion

34

. An engaging hole

28

is provided near the locking pawl

25

of the sheet-like spring

2

so that the engaging portion

11

of the guide portion

10

located at the rear end is capable of loosely engaging the engaging hole

28

, thereby restricting the locking pawl

25

from being raised.

The pull

3

has an axle

37

at one end thereof while it has a grip portion

38

at the other end. A through hole

40

is provided between the axle

37

and the grip portion

38

such that its edge at the side of the grip portion

38

is circular. The through hole

40

is formed such that it can avoid the bent portion

31

of the spring portion

30

of the sheet-like spring

2

placed on a top face of the guide post

7

when the pull

3

disposed on the body

1

is laid to the side of the front end. Consequently, there always exists a gap between the grip portion

38

and the bent portion

31

so as not to block the motion of the spring portion

30

.

Assembly of the slider is carried out in the same manner as the sliders of the above-described respective embodiments. First, the pull

3

is mounted such that the cam

39

of the pull

3

is placed between the spring-receiving portions

9

and the guide portion

10

in a state that the cam

39

of the pull

3

is directed downward and the pull

3

is laid to the side of the rear end. Then the sheet-like spring

2

is mounted on a top face of the pull

3

. At this time, the locking pawl

25

is inserted into the pawl hole

12

in the upper wing plate

5

as shown in

FIG. 10

, while the engaging hole

28

loosely engages the guide portion

10

, so that an opening edge of the engaging hole

28

can be held by the engaging portion

11

.

Further the protruded portion

17

is inserted into the opening

36

provided in front of the base plate

27

of the sheet-like spring

2

and at the same time, the engaging tongue piece

33

is inserted into the through hole

20

provided under the protruded portion

17

, such that the engaging protrusion

18

existing in the center of the front end of the protruded portion

17

engages the hole portion

34

of the engaging tongue piece

33

. The side edges of the sheet-like spring

2

are mounted on the supporting base

21

provided on the upper wing plate

5

so that the surface of the engaging tongue piece

33

is pressed against the contact portion

19

provided on the protruded portion

17

.

Furthermore, the protruded portion

35

provided at both sides of the front end of the drooping portion

26

of the spring portion

30

provided on a front end of the sheet-like spring

2

is pressed down along the slopes on both sides of the accommodating groove

14

provided in the guide post

7

so that the protruded portion

35

engage the engaging portions

22

to be fixed thereto. Thus, the slider can be assembled. In addition, there exists a gap between the bent portion

31

of the spring portion

30

of the mounted sheet-like spring

2

and the accommodation groove

14

in the guide post

7

, so that this gap allows the spring portion

30

to be elastically deformed easily.

Therefore, in the assembled slider, even if a load is applied to the pull

3

in the horizontal direction or in the vertical direction with the pull

3

being laid to the side of the front end of the body

1

, the axle

37

of the pull

3

slides along the guide portion

10

so as to push up the base plate

27

of the sheet-like spring

2

, so that the locking pawl

25

is raised from the element guide groove

13

. However, at this time, because there exists a gap between the grip portion

38

of the pull

3

and the bent portion

31

of the spring portion

30

of the sheet-like spring

2

, the pull

3

never presses the spring portion

30

. As a result, plastic deformation never occurs in the spring portion

30

. Further, engagement between the engaging portion

11

of the guide portion

10

and the engaging hole

28

of the sheet-like spring

2

can block the sheet-like spring

2

from being raised excessively.

The respective embodiments of the slider having the locking device have been described. Although in these respective embodiments, the pull has an axle with an eccentric cam formed integrally, it is permissible to employ such a pull in which an axle thereof is disposed in the same plane as the grip portion.

As is apparent from the above description, the present invention exerts effects as follows.

In the slider with a locking device comprised of a body

1

with an element guide groove

13

, which is formed by connecting an upper wing plate

5

having a pawl hole

12

with a lower wing plate

6

via a guide post

7

, a sheet-like spring

2

mounted on the upper wing plate

5

and having a bending locking pawl

25

at one end thereof, and a pull

3

having a grip portion

38

at one end thereof and an axle

37

having a cam

39

at the other end such that the axle

37

is disposed between the upper wing plate

5

and the sheet-like spring

2

, wherein when the pull

3

pivoted on the upper wing plate

5

is laid forward of the slider body

1

and a pressure is applied, there exists a gap between the sheet-like spring

2

exposed at the guide post

7

and the grip portion

38

. Therefore, even when the pull

3

is laid forward and then a load is applied, the sheet-like spring

2

, which is exposed in the same manner as the conventional ones, is never plastically deformed by the pull

3

. Thus, the slider with locking device is never damaged under any use condition and can exert its locking function effectively.

Further, the sheet-like spring

2

has a bent portion

31

of a spring portion

30

bent in the same direction as the locking pawl

25

, at an exposed part of the guide post

7

. Therefore, the exposed part of the guide post

7

is the bent portion

31

of the sheet-like spring

2

. Thus, the bent portion

31

in which the elastic deformation occurs most excessively in the sheet-like spring

2

can be protected so that the sheet-like spring

2

can be allowed to be elastically deformed effectively for a long period.

Furthermore, because a gap is provided between the bent portion

31

and the guide post

7

so that the sheet-like spring

2

is allowed to be elastically deformed, the gap existing between the bent portion

31

and the guide post

7

allows the bent portion

31

to keep its elastic deformation with a sufficient room.

Still further, because the pull

3

has an inverted-T shaped through hole

40

in which its side toward the axle

37

is expanded, a dented portion

41

of the through hole

40

avoids the sheet-like spring

2

when the pull

3

is laid forward and a pressure is applied, and an expanded portion

42

is capable of making contact with a spring-receiving portions

9

provided on a top face of the body

1

, the through hole

40

is capable of avoiding the bent portion

31

of the sheet-like spring

2

effectively. Additionally, because the expanded portion

42

makes contact with the spring-receiving portion

9

, even if an excessive load is applied to the pull

3

, the elasticity of the sheet-like spring

2

can be protected from any influence.

Still further, the pull

3

has a through hole

40

in which its side toward the grip portion

38

is circular, when the pull

3

is laid forward and a pressure is applied, a circular edge of the through hole

40

avoids the sheet-like spring

2

. Consequently, even if the through hole

40

avoids the bent portion

31

so that the pull

3

is deviated slightly to the right or the left for example, the bent portion

31

of the sheet-like spring

2

is protected from any influence.

Still further, the sheet-like spring

2

has an engaging hole

28

for engaging with a guide portion

10

provided so as to be inclined on a top face of the body

1

above the locking pawl

25

, and when the pull

3

is laid forward and a pressure is applied, the engaging hole

28

engage an engaging portion

11

bent at a front end of the guide portion

10

, thereby blocking the locking pawl

25

from being raised. Consequently, even if a load is applied to the pull

3

in the horizontal direction or the vertical direction, so that the axle

37

of the pull

3

raises the sheet-like spring

2

up to the rising limit position of the locking pawl

25

, the grip portion

38

of the pull

3

never contacts the bent portion

31

to apply a pressure. Therefore, an effective locking function is ensured for a long period. Thus, the effects which the present invention achieves are very remarkable.

DESCRIPTION OF REFERENCE NUMERAL

1

: Body

2

: Sheet-like spring

3

: Pull

5

: Upper wing plate

6

: Lower wing plate

7

: Guide post

9

: Spring-receiving portion

10

: Guide portion

12

: Pawl hole

13

: Element guide groove

25

: Locking pawl

28

: Engaging hole

30

: Spring portion

31

: Bent portion

37

: Axle

38

: Grip portion

39

: Cam

40

: Through hole

41

: Concave portion

42

: Expanded portion

Number	Name	Date	Kind
4074399	Kedzierski	Feb 1978	A
4768263	Fukuroi et al.	Sep 1988	A
5896628	Oda	Apr 1999	A

Slider for slide fastener with locking device

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 (3)