HK1118176B - Slide fastener top end stop - Google Patents

Description

Zipper top end stop

Technical Field

The present invention relates to a top end stop of a slide fastener, and more particularly, to a top end stop of a slide fastener assembled by an injection molding mechanism using synthetic resin, which allows the top end stop to be continued to elements assembled on one side edge of a tape so as to stop a closing action of the element chain by a slider.

Background

Conventionally, as shown in fig. 9, a slide fastener top end stop 1 ' is formed by injection molding using resin so that the top end stop 1 ' abuts against a chain end portion fitted to one side edge of a tape, and a chain element row 5 ' continuously formed by winding a monofilament made of resin into a coil shape is fitted to the tape by sewing with a sewing thread, which is known in taiwan patent application publication No. 564696. The slide fastener top end stop 1 ' stops the slider 3 ' sliding on the element row 5 '. For this reason, a protrusion which the front end of the flange 27 ' of the slider 3 ' comes into contact with is formed so as to protrude in the lateral direction of the top end stop 1 '.

In a slide fastener top end stop 1 ' shown in fig. 9, a top end stop 1 ' is formed on a surface of a tape by an injection molding mechanism using a synthetic resin so that the top end stop 1 ' abuts a coil-like continuous element row 5 ' in a fastener chain, wherein the coil-like wound continuous element row 5 ' is fitted to one side edge of the surface of the tape by sewing with a sewing thread. In the top end stop 1 ', a convex portion 13 ' thereof is integrally formed on the top end of the body such that the convex portion 13 ' is laterally convex. Thus, the convex portion 13 ' needs to be formed in a large size in order to reinforce the strength of the convex portion 13 ', thereby preventing the convex portion 13 ' from being broken when the flange 27 ' of the slider 3 ' hits the convex portion 13 ' so as to strongly pull the convex portion 13 '.

Disclosure of Invention

The present invention has been made in view of the above-mentioned problems, and a main object of the present invention is to provide a slide fastener top end stop which has strength to protect the top end stop from being damaged by resisting pressure from a slider when the slider strikes the top end stop due to a sliding operation of the slider, that is, by reinforcing longitudinal tensile strength of a convex portion formed on the top end stop, and which can secure predetermined strength even when the size of the top end stop is reduced.

Further, it is an object of the present invention to provide a slide fastener top end stop having a longitudinal tensile strength reliably improved by reinforcing a convex portion and ensuring a good tactile sensation.

Further, another object of the present invention is to provide a slide fastener top end stop capable of reliably applying a stop function while a protruding piece does not affect contact between a flange of a slider and a contact surface of a protruding portion when the slider comes into contact with the top end stop, and stopping the slider in a stable condition, the top end stop ensuring good tactile sensation to the skin.

In order to attain the above object, according to the present invention, there is provided a top end stop made of resin and fitted adjacent to a top end of a fastener element row in a slide fastener, characterized by comprising: a body having an outer side surface opposite a split angle of the slider and an inner side surface opposite a flange of the slider; and a convex portion which protrudes laterally from an inner side surface of the main body and can abut against the flange of the slider, a protruding piece which is thinner than the convex portion being formed between the main body and the convex portion.

Therefore, even if the top end stop is strongly pulled in the state where the flange is in contact with the convex portion, the convex portion is reinforced by the convex piece. Therefore, the projecting portion is protected from being damaged, and the slider can be prevented from slipping out from the tip of the element row.

Preferably, the protrusion is formed to extend from a proximal end of the protrusion portion to a front end thereof, and the front end of the protrusion portion is connected with the inner side surface of the main body.

Therefore, the convex portion can be reinforced throughout the entire length of its projection by the projecting piece.

Further preferably, the projecting piece is formed such that its width dimension in the left-right direction gradually decreases as it goes from the top end of the top end stop toward the bottom end side.

Therefore, the distal end of the convex portion is smoothly connected to the inner surface of the main body, whereby the distal end stop having a good tactile sense can be completed.

Also, preferably when the flange of the slider abuts the projecting portion, the projecting piece is inserted into a tape groove formed along the side portion of the slider.

Therefore, the top end stop can reliably stop the slider without affecting the contact between the leading end of the flange of the slider and the contact surface of the convex portion. As mentioned above, the advantages obtained by the present invention are significant.

Drawings

FIG. 1 is a front view of a zipper having a top end stop according to a first embodiment;

FIG. 2 is a front view of the top end stop;

FIG. 3 is a cross-sectional view of the top end stop taken along line A-A in FIG. 2;

FIG. 4 is a perspective view of the top end stop;

FIG. 5 is a front view showing the relationship between the top end stop and the slider;

FIG. 6 is a cross-sectional view of the top end stop taken along line B-B in FIG. 5;

fig. 7 is a perspective view showing a modified example of the top end stop; and

FIG. 8 is a partial front view of a zipper having a top end stop according to a second embodiment;

FIG. 9 is a partial perspective view showing a zipper with a known top end stop.

Detailed Description

In the configuration of the slide fastener top end stop of the present invention, as shown in fig. 1, the continuous element 22 is formed by winding a polyamide or polyester monofilament into a coil shape. So that the core wire 20 passes through the inside of the continuous element 22. The continuous fastener elements 22 are each sewn by sewing yarns 21 onto the side edges of the tape 4 opposite to each other, whereby the top end stops 1, 6 are formed by injection molding using a synthetic resin such as polyacetal so that the top end stops abut the continuous fastener elements 22.

Of the right and left top end stops 1, 6, the top end stop 1 on at least one side is fitted to the top end of the continuous element 22 on the side where the box pin 7 is injection molded so that the box pin 7 abuts the bottom end of the continuous element 22. Such top end stop 1 comprises: a body 10 comprising an outer surface 11 and an inner surface 12, the outer surface 11 facing a side surface of a cleavage angle 28 of the slider 3 when the slider 3 is brought into contact with the top end stop 1, the inner surface 12 being located on the opposite side of the outer surface 11 and facing an inner surface of a flange 27 of the slider 3; and a convex portion 13 that protrudes laterally from the tip end side of the tip end stop 1 on the inner side surface 12 of the main body 10. The main body 10 and the convex portion 13 have uninterrupted lubricating surfaces and have substantially the same thickness. The projecting portion 13 has a contact face 16 capable of making contact with the front end of the flange 27 of the slider 3, and the contact face 16 is provided so as to intersect the inner side face 12 of the body 10 substantially at right angles. Then, the concave portion 14 into which the flange 27 of the slider 3 can be pushed is formed between the contact face 16 and the inner side face 12, and the projecting piece 15 is formed in a smaller thickness than the body 10 and the projecting portion 13 so as to connect the contact face 16 with the inner side face 12. A boss 15 is formed from the proximal end of the convex portion 13 to the front end thereof, and the boss 15 has an inclined surface 15a at which the front end of the convex portion 13 is connected to the inner side surface 12. Therefore, the projecting piece 15 is formed in a substantially triangular shape as seen in a plan view.

As shown in fig. 5 and 6, when the right and left continuous elements 22 are engaged by sliding the slider 3 so that the flange 27 of the slider 3 contacts the projecting portion 13 of the top end stop 1, the projecting piece 15 is inserted into the tape groove 29 formed along the side portion of the slider 3, thereby not affecting the contact between the front end of the flange 27 and the contact surface 16 of the projecting portion 13. The projecting piece 15 reinforces the projecting portion 13 so that when the flange 27 of the slider 3 and the projecting portion 13 of the top end stop 1 contact each other, the contact surface 16 of the projecting portion 13 is never damaged even if a strong pressing force is received from the slider 3. This allows preventing the slider 3 from slipping out from the top end of the continuous element 22. Also, the convex piece 15 is smoothly connected between the front end of the convex portion 13 and the inner side face 12 of the main body 10 so as not to generate a step, thereby forming a top end stop well for skin contact.

(first embodiment)

With the slide fastener top end stop of the first embodiment shown in fig. 1 to 6, the element row 5 formed on the side edge of the tape 4 is formed of the continuous elements 22, and as shown in fig. 1, the continuous elements 22 are formed by winding a synthetic resin monofilament such as polyamide or polyester into a coil-like configuration, or the continuous elements 22 are formed by bending the monofilament into a zigzag form and then bending again in the middle thereof. The continuous fastener element 22 is sewn to the surface on one side edge of the tape 4 by a double chain sewing method using a sewing yarn 21 while the core thread 20 is passed through or placed inside the continuous fastener element 22. Then, the tip end stop 1 is injection-molded using a synthetic resin such as polyacetal, polyamide, polypropylene, or polybutylene terephthalate so that the tip end stop 1 abuts the tip end of the continuous element 22. The box pin 7 is fitted on one side to the tapes 4 so that it abuts the bottom end of the continuous fastener element 22, and the insert pin 8 is fitted to the other tape 4. Then, the opening device 2 constituted by the cartridge 9 is provided at the bottom of the cartridge pin 7, and the insertion pin 8 can be inserted/detached into/from the above-mentioned cartridge 9.

As shown in fig. 2 to 4, the top end stop 1 covers the core thread 20 and the sewing yarn 21, and is also formed on the rear side of the tape 4 across the side end face on one side edge of the tape 4, thereby preventing the top end stop 1 from being separated from one side edge of the tape 4. The body 10 is arranged on the surface of the tape 4 such that it abuts the top end of the continuous element 22. The body 10 is composed of an outer side surface 11 and an inner side surface 12, the outer side surface 11 being located outside the tape 4 with respect to one side edge of the tape 4 on which the continuous fastener elements 22 are mounted, and the inner side surface 12 being located on the opposite side of the outer side surface 11 with respect to the side edge of the tape 4 and inside the tape 4. A convex portion 13 is formed on the tip end side of the main body 10 of the inner side face 12 such that the convex portion 13 is convex laterally, that is, toward the inside of the tape 4.

In the front-rear surface direction of the top end stop 1, the convex portion 13 is formed to be substantially the same thickness as the main body 10, and a surface located on the top end side of the top end stop 1 is formed as a curved surface curved into an arc shape. The face located on the bottom end side of the top end stop 1 crosses the inner side face 12 of the body 10 substantially at right angles so as to form a contact face 16 capable of contacting the front end of the flange 27 of the slider 3. A concave portion 14 into which the flange 27 of the slider 3 can be pushed is formed between the body 10 and the convex portion 13, that is, between the inner side face 12 of the body 10 and the contact face 16 of the convex portion 13. A projection 15 is provided in the recess 14 to connect the inner side face 12 with the contact face 16. A projecting piece 15 is formed with a smaller thickness than the projecting portion 13 in the front and rear surface directions of the top end stop 1, and the projecting piece 15 is arranged at a position where it comes into contact with the surface of the tape 4. The width dimension in the left-right direction of the projecting piece 15 gradually decreases as it goes from the top end side to the bottom end side of the top end stop 1. The front end face 15a is formed as an inclined face which is inclined downward while crossing the contact face 16 and the inner side face 12. Further, the projecting piece 15 is formed throughout the entire width of the contact face 16 from the proximal end of the projecting portion 13 to the front end thereof, that is, in the left-right width direction of the top end stop 1. Therefore, the projecting piece 15 reinforces the projecting portion 13 throughout the entire length in the projecting direction, and connection is made between the front end of the projecting portion 13 and the inner side face 12 of the main body 10, thereby eliminating a step between the main body 10 and the projecting portion 13 and providing an excellent touch feeling.

The top end stop 1 can be brought into the element guide passage 26 inside the slider 3 by sliding the slider 3 in the direction of closing the fastener chain as shown in fig. 5 and 6. In this case, a split angle 28 formed in the middle in the left-right direction of the element guide passage 26 and near the shoulder side of the slider 3, the outer side surface 11 of the body 10 opposing the top end stop 1, and flanges 27 formed on both sides in the left-right direction of the element guide passage 26 and near the rear mouth of the slider 3, the inner side surface 12 of the body 10 opposing the top end stop 1. A tape groove 29 communicating with the element guide passage 26 and capable of inserting the tape 4 is formed in right and left side portions of the slider 3. At this time, the protrusions 15 are inserted into the tape groove 29, which is formed between each of the flanges 27 arranged on both sides of the upper blade plate 24 of the slider 3 for protrusion and the lower blade plate 25 of the slider 3, so that the tape 4 can be inserted therein while avoiding contact with the leading ends of the flanges 27. Therefore, the leading end of the flange 27 comes into contact with the contact surface 16 of the convex portion 13. Meanwhile, the flange 27 is not limited to the type in which it protrudes from the upper blade plate 24, but may be the type in which it protrudes from the lower blade plate 25. In this case, the top end stop 1 and the continuous fastener element 22 are fitted to the rear side of the tape 4, and a tape groove 29 is formed between the flange 27 and the upper blade plate 24.

The slide fastener top end stop shown in fig. 7 shows a modification of the top end stop 1. A boss 15 thicker than the triangular convex portion 13 in plan view is provided in the concave portion 14 between the inner side face 12 of the main body 10 and the contact face 16 of the convex portion 13, obliquely from a position slightly apart from the front end of the convex portion 13 toward the proximal side. The function of the projection 15 is the same as in the above example, and this embodiment can be used as the large-sized top end stop 1.

(second embodiment)

In the slide fastener top end stop of the second embodiment shown in fig. 8, the element rows 5 formed on the side edges of the tape 4 are formed of the single elements 23, and the single elements 23 are molded on the front and rear surfaces of the tape 4 by an injection molding mechanism using a synthetic resin such as polyacetal, polyamide, polypropylene, or polybutylene terephthalate. The single element 23 includes a coupling head 17 and leg portions 18, and the leg portions 18 are disposed on the front and rear sides of the webbing 4. Meanwhile, the core thread 20 is arranged on the side edge of the tape 4, and the individual fastener elements 23 are injection-molded on the core thread 20.

The top end stop 1 is injection molded using the same synthetic resin as the individual element 23 so that the top end stop 1 abuts the individual element 23. The body 10 includes an outer side surface 11 located outside the webbing 4 and an inner side surface 12 located on the opposite side of the outer side surface 11 and located inside the webbing 4. A convex portion 13 having the same thickness as the main body 10 and protruding toward the inside of the webbing 4 is formed at the tip of the inner side face 12 of the main body 10. A boss 15 thinner than the boss 13 is provided on the main body 10 and in a concave portion 14 formed at the proximal end of the boss 13 such that the boss 15 extends from the front end of the boss 13 to the inner side face 12 of the main body 10. The protrusions 15 can be inserted into a tape groove 29 formed between flanges 27 provided on both sides of the upper and lower blade plates of the slider 3, the tape groove 29.

A great advantage of mounting the projecting piece 15 on the body 10 is that when the flange 27 of the slider 3 strikes the projecting portion 13 of the top end stop 1, the projecting piece 15 provided in the recessed portion 14 prevents the projecting portion 13 from being damaged by pressing on the projecting portion 13, so as to prevent the slider 3 from slipping out from the element row 5.

In the tether having the slide fastener top end stop of the present invention, the projecting portion provided on the top end stop body so as to exert the function of stopping the slider has a strength to protect itself from being damaged when the projecting portion strikes the slider. Therefore, the slider is prevented from slipping out, and a top end stop with good skin contact can be produced.

Claims (4)

1. A zipper top end stop comprising:

a split angle (28), wherein the split angle (28) is located in the middle of the element guide channel (26) in the left-right direction and is formed on the shoulder mouth side of the slider (3); a flange (27), the flange (27) protruding from an upper blade plate (24) or a lower blade plate (25) formed on the rear mouth side of the slider (3); a pair of tapes (4), the tapes (4) having a plurality of fastener rows (5) fitted on the side edges opposite to each other; a tape groove (29) into which the tape (4) can be inserted, the tape groove (29) being formed between the flange (27) and the upper blade plate (24) and the lower blade plate (25) of the slider (3), and being suitable for a slide fastener; a pair of left and right top end stops (1), the top end stops (1) being made of resin and being fitted adjacent to the top ends of the element rows (5), the top end stops (1) being characterized by further comprising: a body (10) having an outer side surface (11) facing the cleavage angle (28) of the slider (3) and an inner side surface (12) facing the flange (27) of the slider (3);

a convex portion (13) which protrudes from the inner side surface (12) side of the body (10) to the side surface of the inner side surface (12) of the flange (27) on the opposite side to the outer side surface (11), and which has a contact surface (16) capable of abutting on the end portion of the flange (27) of the slider (3);

and a protrusion (15), the protrusion (15) being connected between the main body (10) and the contact surface (16) of the protrusion (13), wherein the protrusion (15) is formed with a smaller thickness than the protrusion (13) in a direction perpendicular to the surface of the yarn tape (4).

2. The slide fastener top end stop according to claim 1, wherein the boss member (15) is formed from the body side of the proximal end of the boss portion (13) to the front end thereof so that the front end of the boss portion (13) is connected to the inner side face (12) of the body (10).

3. The top end stop of a slide fastener according to claim 1, wherein the projecting piece (15) is formed so that a width dimension in the left-right direction is gradually reduced as it goes from the top end side of the top end stop (1) toward the bottom end side thereof.

4. The slide fastener top end stop according to claim 1, wherein when the flange (27) of the slider (3) abuts the projecting portion (13), the projecting member (15) is inserted into a tape groove (29) formed between said flange (27) and said lower blade plate (25) or said upper blade plate (24) disposed opposite to said flange (27).