CN100571563C - Zipper head with forced locking device - Google Patents

Abstract

The invention provides a kind of zipper head with forced locking device, in this forced locking device, the pawl hole (22) that locking jaw (30) can be inserted into is arranged on the top surface of the main body (1) of pull head; Preceding attachment post (10) and back attachment post (11) are arranged on the front and back of pawl hole (22); Lid (7) comprise attachment post (10) before the engagement before be engaged part (32) and can be in the scope of back attachment post (11) vertically be engaged partly (33) after mobile; Rubber-like flexure strip (31) is arranged on the front end of the roof (26) of lid (7), so it is facing to preceding attachment post (10); The opening portion (27) that the pivot (36) of permission pulling-on piece (8) passes is arranged in the side walls (25) of lid (7); The base section (29) of locking jaw (30) is arranged on the rear side of at least one opening portion (27); And base section (29) is bent, thereby make the front end of locking jaw (30) be positioned at the front side, the locking jaw (30) that is arranged on the lid (7) is easily inserted do not destroy sewing line etc. in the additional clearance between the slide fastener elements arranged in a straight line.

Description

Zipper puller with automatic locking device

technical field

The present invention relates to a zipper puller with an automatic locking device, in particular to a zipper puller with an automatic locking device which can actuate a cover with locking claws by pulling a pull piece to exert a locking function.

Background technique

In general, the following zipper pull with automatic locking device is already known as described in US Pat. No. 2,657,445. In the cover 107 constructed between the cover attachment posts standing upright at the front and rear positions of its slider body, as shown in the developed view of FIG. , and an engagement piece 150 that may be swingably attached to the front attachment post is disposed under a base portion of the elastic piece 131 . An engaging piece 150 swingably attached to the rear attachment post is provided at the other end, that is, the rear end of the cover 107 . Then, locking claws 130 are provided at left and right base portions of these engaging pieces 150 so that the locking claws 130 are offset from each other and protrude outward. The pressing portion 153 capable of pressing the top surface of the zipper element is formed by forming the base portion of one locking claw 130 wide, and the left and right locking claws 130 are inserted into claw holes provided at a rear position of the main body. Both sides of the attachment post. A recessed shaft insertion portion 152 that allows the pivot of the pull tab to pass is provided at the base portion of the locking claw 130 and the pressing portion 153, and this material is bent to form the cover 107 as shown in FIG. 12 , and the pivot of the pull tab is installed in it. By pulling up the tab, the rear end of the cover is lifted, and the left and right locking claws 130 are released from the linearly-arranged zipper elements arranged front and rear of the locking claws 130 so that the slider can slide in the front-rear direction.

Another type of zipper pull with an automatic locking device is already known as described in US Pat. No. 3,267,544. In the slider 251, as shown in FIG. 13, locking pawls 230 that can be inserted between the front and rear zipper elements arranged in a straight line are provided on the left and right side walls of the cover 207 that is swingably attached to the slider body, and lock Claws 230 are inserted into claw holes 222 provided on left and right sides of the main body. The engaging piece 250 provided at the front end of the cover 207 is inserted into and engaged with the left and right hook attachment posts 210 standing at the front position of the main body. In addition, an elastic piece 231 protrudingly provided at the center of the front end of the cover 207 is fixed to the front of the support portion 212 between the attachment posts 210 to form the rear end of the cover 207 so as to be vertically swingable. Engagement pieces 250 provided at left and right portions of the rear end of the cover 207 are swingably attached to hook-shaped attachment posts 211 provided at a rear position of the main body. The pivot 236 of the pull tab 208 is inserted into the opening portion 227 provided at the base portion of the locking claw 230 of the cover 207 . Therefore, by configuring the cover 207 to be freely slidable by the operation of the pull tab 208, the slider 251 can slide in the front-rear direction.

In the zipper slider with automatic locking mechanism shown in Figs. 11 and 12 as described above and most other well-known sliders with automatic locking mechanism, the locking pawls are located between the engaging heads of the left and right zipper elements in a linear arrangement It is inserted between the leg portions of the zipper elements in a state of being engaged with each other in the guide grooves for guiding the linearly arranged zipper elements installed in the slider body. That is, when the cover having the locking claw is attached to the main body, the locking claw is inserted into the claw hole provided on one side of the attachment post at the rear position of the main body. As a result, there is a problem that the sewing thread that sews the fastener element to the fastener tape may be damaged, or the gap into which the locking claw is inserted is so small that the locking function of the slider cannot be sufficiently exerted.

The present invention has been made in consideration of the above-mentioned problems, and a main object of the present invention is to provide a slider having an automatic locking mechanism constituted by locking claws in its cover, wherein the cover is attached at a front position of the main body and the locking pawl is provided on the side of the attachment post in the front position, i.e. on the shoulder side of the main body, so that the locking pawl can be inserted between linearly aligned zipper elements with additional spacing gap, so that the locking function can be fully exerted without damaging the sewing thread, or, the main purpose of the present invention is to provide a zipper slider with an automatic locking device that can be assembled simply and easily There is no need to change the equipment used to manufacture conventional slider bodies.

A further object of the present invention is to provide a zipper slider with an automatic locking device, wherein the locking claw is formed in such a structure that by specifying the structure of the locking claw formed continuously from the opening portion of the cover, the locking claw The jaws themselves are easily and securely inserted between the legs of the linearly aligned zipper elements.

A further object of the present invention is to provide a zipper slider with an automatic locking device, the zipper slider enables the cover with locking claws to be used for a long time, and exerts a good locking function. The structure of the post and the structure of the locking claw formed on the side wall of the cover make the operation of the pull tab smooth.

A further object of the present invention is to provide a zipper slider with an automatic locking device, even if the locking claw is only arranged on the side wall of one side of the cover, it can still fully exert its locking function. Good performance and get rid of frequent malfunctions, and prevent the intrusion of foreign objects such as excess thread ends through the claw holes in the main body to ensure smooth sliding operation.

A further object of the present invention is to provide a zipper puller with an automatic locking device which allows the cover with locking claws to be easily attached to the main body so that the cover can be attached to the front attachment of the main body. post and very easy to assemble.

Contents of the invention

In order to achieve the above object, according to the main aspect of the present invention, there is provided a zipper slider with an automatic locking device, which is characterized in that the claw hole into which the locking claw can be inserted is provided on the top surface of the slider body; about the lock hole Front and rear sides, the shoulder mouth side is referred to as the front side and the rear mouth side is referred to as the rear side; the attachment posts are erected in front of and behind the claw holes; the cover has a pair of left and right front engaged portions engaging the front attachment posts and A pair of left and right rear engaged parts that move in the rear attachment post; an elastic piece that cooperates with the front attachment post is provided at the front end of the top wall attachment post; In the lower part of the left and right side walls (25) of the cover (7); the base part of the locking claw is continuously formed from the rear side of at least one opening part and bent forward, inserted into the locking claw hole (22) The front end of the claw (30) protrudes downward.

Especially, in the slider of the slide fastener having an automatic locking mechanism including locking claws in its cover, the locking claws provided on the side walls of the cover are just before the left and right zipper elements are engaged with each other in the main body of the slider. Inserted between zipper elements having a gap on the shoulder opening side to stop the sliding of the slider. Thereby the locking pawl can be inserted into the gap with the extra spacing without damaging the sewing thread of the fastener stringer. Additionally, the slider body can be easily and efficiently manufactured using conventional manufacturing equipment.

Preferably, the locking claw is continuously formed from a rear side portion of the opening portion, and a front end of the locking claw formed by bending the base portion is located below the opening portion.

Therefore, the locking claw can be easily placed in the gap portion just before the linearly aligned left and right slide fastener elements are engaged with each other, so that the elements can be inserted accurately and efficiently.

Preferably, the tab guide portion whose thickness gradually decreases as the tab guide portion goes forward from the rear attachment post is formed on the inner side of the rear attachment post, and when the cover moves upward, the top of the tab guide portion The surface is still on top of the upper side of the locking pawl.

Therefore, the pivot shaft of the tab passing through the opening portion in the cover slides on the top surface of the tab guide portion, and at this time, the pivot shaft never comes into contact with the upper side of the locking pawl. Therefore, the locking claw provided on the cover can maintain an effective locking function, so that it can be used for a long time.

Preferably, the claw hole is set to one side in the width direction of the upper wing plate of the main body; the locking claw provided on one of the side walls of the cover is inserted into the claw hole; The bottom of the pawl hole in the plate, and therefore the stepped portion, is also biased to the rear side of the slider with respect to the locking pawl.

Therefore, even if the locking pawl is only provided on one side wall of the cover, the locking function can still be fully exerted. In addition, no foreign matter such as excess thread is intruded through the claw holes, resulting in a trouble-free and smooth sliding operation.

Preferably, the tapered surface is formed on the outside of the top of the front attachment post and the ramp is formed on the bottom edge of the front engaged portion of the cover.

Thereby, the cover with locking claws can be precisely and easily attached to the front portion of the main body. Therefore, the advantages achieved by the present invention are noteworthy.

Description of drawings

Figure 1 is an exploded perspective view of a zipper slider with an automatic locking device;

Figure 2 is a perspective view of the slider after the slider is assembled;

Fig. 3 is a partial sectional front view of the slider;

Fig. 4 is a partially cutaway front view showing the operating state of the slider;

Fig. 5 is an enlarged sectional view of the slider along the V-V line in Fig. 3;

FIG. 6 is an enlarged view of main parts showing the operation of the slider;

Fig. 7 is a sectional view of the zipper tape of the slider along line VII-VII in Fig. 3;

8 is a sectional view showing a state just before the cover is installed on the slider;

Fig. 9 is a sectional view along line IX-IX in Fig. 3, showing the state after the cover is installed on the slider;

Fig. 10 is a sectional view along the line X-X in Fig. 3;

Fig. 11 is a developed view of a cover material of a well-known slider;

Figure 12 is a perspective view of the cover; and

Fig. 13 is an exploded perspective view of another known slider.

Detailed ways

The zipper slider with automatic locking device of the present invention is a slider including a locking pawl as a locking mechanism in its cover. As shown in FIGS. 1 and 2 , the slider includes a main body 1 , a cover 7 and a pull tab 8 . The main body 1 and the tab 8 are formed by die-casting, and the cover 7 is formed by metal stamping.

In the main body 1 of the slider, the upper wing 2 and the lower wing 3 are connected with a diamond 4, and the flanges 5 on both sides of the upper wing 2 are bent to provide a guide for guiding the linearly arranged zipper elements 40. Guide groove 6. The claw hole 22 is provided at a position deviated to one side in the longitudinal direction of the center of the upper wing plate 2 . The lower stepped portion 23 is protrudingly provided at the bottom of the claw hole 22, that is, at a position opposite to the guide groove 6, so that the stepped portion is directed from the rear to the front. The front attachment post 10 and the rear attachment post 11 are erected in front of and behind the claw hole 22 on the upper wing plate 2 .

In the front attachment post 10 , a trapezoidal support portion 12 is provided at the center in the longitudinal direction thereof, and an inclined guide surface 13 to which the elastic piece 31 of the cover 7 can be fitted is formed in front of the support portion 12 . Small protrusions 16 are protrudingly provided on each of both sides of the support portion 12 so as to be in contact with the front engaged portion 32 on the cover 7 . In addition, the front attachment post 10 having the hook portion 21 whose inner side is a hook shape is integrally provided with both sides of the support portion 12 . The rear attachment post 11 includes convex guide portions 19 on lateral sides on both sides of its inner face so that the rear engaged portion 33 of the cover 7 can move vertically. A tab guide portion 18 for guiding the pivot 36 of the tab 8 is protrudingly provided on the inner side surface of the rear attachment post 11 at a position biased to one side so as to be inclined forward.

The cover 7 has a side wall 25 and a top wall 26 provided by bending, and an elastic piece 31 elastically contacting the front of the support portion 12 is provided at the front end of the top wall 26 so that the top wall 26 is extended. The side wall 25 on both sides has an opening portion 27 into which the pivot shaft 36 of the pull tab 8 is inserted. The claw piece 28 is provided protruding downward so that the locking claw 30 is continuously formed from the rear end of one opening portion 27 . A proximal portion 29 of the claw piece 28 is bent forward, and further its front end protrudes downward, so as to form a locking claw 30 located below the opening portion 27 . The front engaged portion 32 and the rear engaged portion 33 protruding outward, respectively, are provided at front and rear positions of the bottom end of the side wall 25 so that they can engage the hook portion 21 of the front attachment post 10 and the guide portion of the rear attachment post 11, respectively. 19.

When assembling the slider, the pivot shaft 36 of the pull tab 8 is inserted into the opening portion 27 of the cover 7 , and the rear engaged portion 33 is inserted into the guide portion 19 of the rear attachment post 11 . When the locking pawl 30 is opposite to the pawl hole 22 , the elastic piece 31 is in elastic contact with the guiding surface 13 of the supporting portion 12 . Then, using the tapering surface 20 of the front attachment post 10 , the front engaged parts 32 are pushed in from above so that they engage the hook parts 21 so that the cover 7 can be turned about the small protrusion 16 .

Regarding the operation of the slider with the pull tab 8, when the pull tab 8 is pulled up by holding the grip portion 37, the pivot shaft 36 slides along the tab guide portion 18 so that the rear engaged portion 33 of the cover 7 is raised to The movable upper limit of the guide portion 19 of the rear attachment post 11 . Simultaneously, the locking pawl 30 protruding from the pawl hole 22 is moved backward and retracted from the guide groove 6, thus allowing the slider to slide. At this time, the pivot 36 of the pull tab 8 is in contact with the pull tab guide portion 18 provided on the rear attachment post 11 as shown in FIG. . By configuring the top surface of the tab guide portion 18 so that it sits above the top side of the locking pawl 30 , the pivot 36 is formed so that it never comes into contact with the pawl 28 . Just before the linearly aligned left and right zipper elements 40 are engaged with each other in the guide groove 6 of the main body 1, the locking pawl 30 is inserted between the zipper elements 40 with a gap to stop the slider as shown in FIG. 6 .

(first embodiment)

In the zipper slider with automatic locking device according to the first embodiment shown in FIGS. 7 is formed by stamping steel sheets. The slider with an automatic locking mechanism includes three parts, namely, a main body 1 , a cover 7 and a pull tab 8 . The cover 7 is equipped with locking claws 30 as a locking mechanism, and by operating the pull tab 8, the locking claws 30 can be inserted between the left and right zipper elements 40 arranged in a straight line. A pull tab 8 prepared by a user may be used as the pull tab 8 used here. Therefore, the slider with the automatic locking device can be easily assembled by hand.

As shown in FIG. 1 , in the slider body 1 , the upper wing plate 2 and the lower wing plate 3 are connected with rhombus blocks, and flanges 5 are formed on two side edges of the upper wing plate 2 . The flange 5 can guide the zipper element 40 on the side edge of the zipper tape 39, the core cord 45 is sewn in the zipper tape 39 with a sewing thread 44, so that the core cord passes through the element 40, thus in the upper flap 2 and the lower flap Guide grooves 6 are formed between the plates 3 . The claw hole 22 is provided at a position where the center of the upper wing plate 2 is deviated to one side in the longitudinal direction, for example, the deviated position shown in FIGS. 1 and 10 . From the rear to the front of the claw hole 22A, a lower stepped portion 23 is protrudingly provided at the portion of the bottom of the claw hole 22 opposite to the guide groove 6 so that the stepped portion 23 faces the claw piece 28 . The front attachment post 10 and the rear attachment post 11 stand in front of and behind the claw holes 22 on the top surface of the upper wing 2 .

The front attachment post 10 erected on the upper wing 2 is equipped with a trapezoidal support portion 12 oriented in the longitudinal direction at the center of the upper wing 2 . An inclined guide surface 13 , with which an elastic piece 31 provided on the cover 7 can elastically contact, is formed in front of the support portion 12 . Protruding front attachment posts 10 are integrally provided on both sides of the guide surface 13, and the attachment posts 10 form a front engaging portion with a hook portion 21 having a rearwardly directed hook-like structure. A small protrusion 16 is protrudingly provided on a side of the support portion 12 facing the hook portion 21 so that the protrusion contacts and engages with a front engaged portion 32 provided on the cover 7 . Meanwhile, a concave portion 17 is formed in the upper flap 2 so that the elastic piece 31 of the cover 7 can be fixed therein in a stable state.

A rear attachment column 11 erected on the upper wing 2 is provided on the rear mouth side of the upper wing 2 . A tab guide portion 18 inclined to extend forward along the claw hole 22 is provided inside the rear attachment post 11 so that, as shown in FIG. 6 , the pivot 36 of the tab 8 is guided. A guide portion 19 for vertically moving the outwardly protruding rear engaging portion 33 formed on the cover 7 is provided on both inner faces of the rear attachment post 11 as shown in FIG. 5 , and a locking portion for stopping the upward movement of the cover 7 24 is formed on the top end of the rear attachment post 11 . Meanwhile, the tab guide portion 18 formed on the inner side of the rear attachment post 11 is provided at a position biased to one side as shown in FIG. 10 .

The cover 7 is formed by stamping a single steel sheet, thereby providing the side walls 25 and the top wall 26 , and the elastic sheet 31 protrudes from the front of the top wall 26 . Triangular opening portions 27 are provided in the side walls 25 on both sides, and pawl pieces 28 for forming locking pawls 30 are provided to point downward from the rear end of one opening portion 27 . The base portion 29 of the pawl piece 28 is bent forward, and then its front end is extended downward to form the locking pawl 30 so that it is located below the opening portion 27 and is formed into a substantially C-shape surrounding the opening portion 27. The pivot 36 of the pull-tab 8 is inserted. The front engaged portion 32 capable of engaging the hook portion 21 formed on the front attachment post 10, and the rear engaged portion 11 capable of moving in the guide portion 19 of the rear attachment post 11 are protrudingly provided at the front end and the front end of the side wall 25. rear end. At the same time, the locking pawl 30 is slightly deformed inward as shown in FIG. 10 . Also, the front end of the tab guide portion 18 is located in front of the rear end side of the opening portion 27 and in front of the base portion 29 .

When assembling the slider, the rear engaged portion 33 is inserted into the rear attachment post 11 , and the pivot 36 of the pull tab 8 is surrounded by the opening portion 27 in the cover 7 . In addition, as shown in FIG. 8, when the locking pawl 30 is facing the pawl hole 22, a tapered surface formed on the outside of the top end of the front attachment post 10 is formed on the bottom edge of the front engaged portion 32 of the cover 7. The inclined part 34 is pushed in from above. Then, the front engaged portion 32 is brought into contact with and engaged with the small protrusion 16 formed in the hook portion 21 as shown in FIG. 9 . As a result, the rear end of the cover 7 can move around the small protrusion 16 within the range of the rear attachment post 11 .

The operation of the assembled slider will be described below. When the pull-tab 8 is pulled obliquely upward along the pull-tab guide portion 18 as shown in FIG. Back out of the guide groove 6 so that the slider slides backwards. At this time, as shown in the figure, the pivot shaft 36 is in contact with the tab guide portion 18, which is formed such that its thickness gradually decreases as it goes forward from the rear attachment post 11, and moves the cover 7, while , since the top surface of the tab guide portion 18 is positioned above the upper side of the locking claw 30 , the pivot 36 is not in contact with the locking claw 30 . When the pull tab 8 is pulled forward, the cover 7 is brought up along the edge of the opening portion 27 . Then, the rear engaged portion 33 moves within the range of the guide portion 19 in the rear attachment post 11 to withdraw the locking pawl 30 from the guide groove 6, thereby sliding the slider forward. If the pull tab 8 is released for stopping the slider, as shown in FIG. time, thus stopping the movement of the slider.

If the user wants to install the slider with the user's desired pull tab, the slider with the automatic locking device of the present invention can be easily installed without using any tools. The slider may be provided on a fastener chain of a fastener chain arranged using wires, and the fastener chain may be widely used in various fields.

Claims (4)

1. the zipper head with forced locking device is characterized in that, pawl hole (22) are arranged in the main body (1); Attachment post (10,11) is erected at the place ahead and the rear in described pawl hole (22); Lid (7) have engagement be engaged before about attachment post (10) a pair of before described part (32) and in described back attachment post (11), move a pair of about after be engaged partly (33); The flexure strip (31) of cooperating with described preceding attachment post (10) is arranged on the front end of the attachment post side of roof (26); The opening portion (27) that allows the pivot (36) of pulling-on piece (8) to pass is arranged in the bottom of left and right sides sidewall (25) of described lid (7); The base section (29) of locking jaw (30) begins to form continuously and to front curve from the rear side at least one described opening portion (27); The front end that inserts the described locking jaw (30) in the described pawl hole (22) is outstanding downwards.

2. the zipper head with forced locking device as claimed in claim 1, it is characterized in that, described locking jaw (30) forms continuously from the rear section of described opening portion (27), and the front end of the described locking jaw (30) that forms by crooked described base section (29) is positioned at the below of described opening portion (27).

3. the zipper head with forced locking device as claimed in claim 1, it is characterized in that, pulling-on piece leader (18) is formed on the inboard of described back attachment post (11), the thickness of this pulling-on piece leader (18) reduces forward gradually from described back attachment post (11), and when described lid (7) when being moved upward, the top surface of described pulling-on piece leader (18) is positioned at the top of the upside of described locking jaw (30).

4. the zipper head with forced locking device as claimed in claim 1 is characterized in that, described pawl hole (22) is arranged on the one-sided position of the width of the upper flange (2) of being partial to described main body (1); The described locking jaw (30) that is arranged on one of the sidewall (25) of described lid (7) is inserted in the described lockhole (22); And step part (23) is formed at the bottom in the described pawl hole (22) that is arranged in the described upper flange (2), so that described step part (23) is partial to the rear side of described pull head with respect to described locking jaw (30).

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