HK1095069B - Slide fastener - Google Patents

Description

Slide fastener

Technical Field

The present invention relates to a slide fastener having a top end stop (top end stop) made of synthetic resin integrally fixed by molding to a space portion (space portion) formed in a fastener body so that the top end stop is adjacent to a linear element row in the fastener body, the fastener body being shaped so as to fix a coiled or zigzag linear element row made of synthetic resin to opposite side edges of a pair of fastener tapes by sewing.

Background

In the top end stopper for the conventional slide fastener disclosed in taiwan patent No.497392, linear fastener element rows (linear fastener elements) made of synthetic resin are fixed to opposite side edges of a fastener tape (fastener tape) in a fastener chain body (fastener chain) by sewing, and the top end stopper made of synthetic resin is formed at a top end portion of the linear fastener element rows by injection molding. When the coil-shaped linear element rows are fixed to the opposite side edges of the fastener tape 103 by sewing and the tip end stopper 110 made of synthetic resin is fixed to the tip end so as to be adjacent to the linear element rows as shown in fig. 19, a single coil-shaped linear element (fastener element)121 at the tip end of each linear element row, that is, a one-turn coil-shaped linear element 121 continuing in order of its lower leg portion, inverted portion, upper leg portion and coupling head at the tip end portion is covered (bury) in one of the tip end stoppers 110 made of synthetic resin so as to cover (cover) the coil-shaped linear element 121.

According to the top end stop 110 of the coil-shaped linear slide fastener shown in fig. 19, one-turn (cycle) coil-shaped linear element 121 is buried in the top end stop 110 made of synthetic resin at the top end portion of the coil-shaped linear element row fixed to each of the opposite side edges of the fastener tape 103 by sewing, thereby covering the coil-shaped linear element 121. However, since the coil-shaped wire-shaped element 121 covered by the covering method is only one turn of the coil-shaped wire-shaped element 121, the attachment strength of the tip stopper 110 is weak and unstable. If a large pulling force is applied to the slider 128 in a state where the slider 128 is in contact with the top end stopper 110, the top end stopper 110 slips off from the coil-shaped linear element 121, and therefore the slider 128 may run out from the coil-shaped linear element row, which is a problem to be solved.

Disclosure of Invention

The present invention has been made in view of the above problems, and a first object of the present invention is to provide a slide fastener having a coil-shaped or zigzag-shaped linear fastener element row in which a top end stopper is integrally molded with or in the same unit as the coil-shaped or zigzag-shaped linear fastener elements so that the top end stopper never slips off the linear fastener elements and the top end stopper is firmly and stably fixed to a fastener chain body.

In addition to the first object, a second object of the present invention is to provide a slide fastener capable of sufficiently performing the function of a top end stopper in such a manner that a projecting portion (projecting section) is provided so as to be in contact with a flange of a leading linear element of a slider.

In addition to the first object, a third object of the present invention is to provide a slide fastener capable of sufficiently performing the function of a top end stopper in such a manner that an expanded portion (expansion port) is provided so as to be in contact with a diamond (diamond) for guiding the linear elements of the slider.

In addition to the second or third object, a fourth object of the present invention is to provide a slide fastener capable of sufficiently performing the function of a top end stop by specifying the positions where a projecting portion and an expanding portion to be provided on the top end stop are located.

A fifth object of the present invention, in addition to the first object, is to provide a slide fastener whose fixing strength to a fastener tape can be increased in such a manner that top end stoppers are formed on a front surface side and a rear surface side of the fastener tape.

A sixth object of the present invention, in addition to the first object, is to provide a high quality slide fastener in which the sewing thread remaining in the space portion on the fastener tape is prevented in advance from being displaced and exposed on the front surface of the top end stopper at the thumb top end stopper due to the injection pressure by a feature that: the linear element rows are sewn to the fastener tape, and the projections project toward the front surface portion of the main body portion on the upper side of the sewing thread, i.e., on the sewing thread.

A seventh object of the present invention, in addition to the sixth object, is to provide a high quality slide fastener in which the sewing thread is prevented from being lifted and displaced in advance by a mold at the time of molding the top end stop, by a feature that: the linear element rows are sewn to the fastener tape, and the grooves are provided at the upper side of the sewing thread, i.e., at the centers of the protrusions on the sewing thread.

An eighth object of the present invention, in addition to the first object, is to provide a high quality slide fastener in which the lifting and deviation of the sewing thread shellfish is prevented in advance by a mold for forming a groove at the time of molding the top end stop, and the lifting and deviation is also prevented by a feature that: the linear element rows are sewn to the fastener tape, and the grooves are provided on the upper side and on the sewing line.

A ninth object of the present invention, in addition to the second object, is to provide a slide fastener in which a protruding portion formed on a body portion of a top end stopper to be brought into contact with a flange of a slider is formed thick and strong to prevent the protruding portion from being broken when the slider vigorously strikes the protruding portion.

According to a first aspect of the present invention, to achieve the above object, there is provided a slide fastener having a coil-like or zigzag-like linear element row, the slide fastener being characterized in that a fastener stringer (stringer) is formed by fixing the coil-like or zigzag-like linear element row along each of opposite side edges of a fastener tape with a sewing thread, a top end stopper made of synthetic resin is fixed by injection molding at the vicinity of a top end portion of the linear element row to mold a body portion in such a manner that the top end stopper covers and covers a plurality of adjacent linear elements and fills gaps in the adjacent linear elements.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, there is provided a slide fastener characterized in that the top end stopper has a protruding portion which protrudes from an inside surface on the main body on the inside of the fastener tape and comes into contact with the leading end of a flange mounted on the slider body, the protruding portion being provided on the main body portion.

According to a third aspect of the present invention, in addition to the configuration of the first aspect, there is provided a slide fastener characterized in that the top end stop has an expanded portion which is expanded outward from an outer side surface on the opposite side of the inner side surface on the main body portion on the outer side of the fastener tape and is brought into contact with a diamond on the slider body, the expanded portion being provided to the main body portion.

According to a fourth aspect of the present invention, in addition to the configuration of the second or third aspect, there is provided a slide fastener characterized in that a protruding portion formed on an inner side surface of a body portion of a top end stop and an expanded portion formed on an outer side surface are formed on upper end sides of the inner side surface and the outer side surface of the body portion.

According to a fifth aspect of the present invention, in addition to the configuration of the first aspect, there is provided a slide fastener characterized in that the main body portion of the top end stop includes a front surface portion formed on the front surface side of the fastener tape in which the plurality of linear elements are buried and a rear surface portion formed on the rear surface side of the fastener tape so as to be continued to the front surface portion.

According to a sixth aspect of the present invention, in addition to the configuration of the first aspect, there is provided a slide fastener characterized in that: the linear element rows in a coil shape or a zigzag shape are sewn along each of the opposite side edges of the fastener tape, and the protrusions are protruded on the upper side of the sewing thread, i.e., on the sewing thread, on the front surface portion of the main body portion of the top end stopper.

According to a seventh aspect of the present invention, in addition to the configuration of the sixth aspect, there is provided a slide fastener characterized in that: an inner concave groove is engraved with respect to an inner concave groove engraved in a front surface of a protrusion formed on a body portion of the top end stopper.

According to an eighth aspect of the present invention, in addition to the configuration of the first aspect, there is provided a slide fastener characterized in that: the coil-shaped or zigzag-shaped linear element rows are sewn along each of the opposite side edges of the fastener tape, and grooves are engraved along the sewing line on the upper side of the sewing line, i.e., on the sewing line, with respect to the front surface portion on the main body portion of the top end stopper.

According to a ninth aspect of the present invention, in addition to the configuration of the first aspect, there is provided a slide fastener characterized in that: the protruding portion to be brought into contact with the flange of the slider is formed in a shape such that a front surface of the protruding portion protrudes higher than a front surface of the body portion.

With the effect of the present invention, according to the fifth aspect, the top end stopper can be easily integrally molded with the linear element row, and in addition, can be firmly and stably fixed to the fastener chain body.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the top end stopper can come into firm contact with the flange for guiding the slider, stopping the sliding of the slider.

According to the third aspect of the present invention, in addition to the effect of the first aspect, the top end stopper can securely stop the sliding of the slider by bringing the expanded portion into contact with the rhomboid for guiding the slider.

According to the fourth aspect of the invention, in addition to the effects of the third or third aspect, the projecting portion and the expanded portion can be effectively used as a top end stopper, and the projecting portion and the expanded portion are reliably brought into contact with the slider to thereby stop the sliding of the slider.

According to the fifth aspect of the invention, in addition to the effect of the first aspect, the fixing strength of the top end stopper to the fastener tape can be improved by increasing the contact area between the top end stopper and the fastener tape. As described above, the effects that can be brought by the present invention are considerable.

According to the sixth aspect of the invention, as an addition to the effect of the first aspect, it is possible to prevent the sewing thread left in the space portion on the fastener tape from being exposed on the front surface of the top end stop in advance even if the sewing thread is displaced by the injection pressure due to its slack state at the time of molding the top end stop, thereby forming a high-quality beautiful top end stop.

According to the seventh aspect of the invention, as an addition to the effect of the sixth aspect, it is possible to reliably prevent the sewing thread from being exposed on the front surface of the top end stopper, thereby forming a high-quality beautiful top end stopper, because the sewing thread in a slack state can be tightened by being pressed against the upper leg portion of the linear fastener element by the die for forming the groove at the time of molding the top end stopper.

According to the eighth aspect of the invention, in addition to the effect of the first aspect, the sewing thread can be reliably prevented from being exposed on the front surface of the top end stopper, thereby forming a high-quality beautiful top end stopper, because the sewing thread in a relaxed state can be tensioned by being pressed against the upper leg portion of the linear fastener element by the die for forming the groove at the time of molding the top end stopper.

According to the ninth aspect of the invention, in addition to the effect of the second aspect, the protruding portion of the top end stop to be brought into contact with the flange of the slider may be formed thick and robust to prevent the protruding portion from being broken when the slider strikes the protruding portion. As described above, the effect brought by the present invention is considerable.

The present invention provides a slide fastener comprising rows of linear elements fixed along each of opposite side edges of a fastener tape and a top end stopper made of synthetic resin fixed to a top end portion of each of the rows of linear elements, wherein the top end stopper covers a plurality of adjacent linear elements and is filled in the linear elements so as to form a body portion, the rows of linear elements are sewn to each of said fastener tapes, and a groove is engraved on an upper side of a sewing line on a front surface portion of the body portion.

Preferably, the top end stop has a protruding portion that protrudes from an inside surface on the body portion on an inside of one of the fastener tapes along the tape surface and contacts the flange of the slider.

Preferably, the top end stop has an expanded portion expanded from an outside surface on an outside of one of the fastener tapes on a side of the body portion opposite to the inside surface, and brought into contact with the diamond of the slider.

Preferably, the protruding portion and the expanded portion formed on the main body portion are located at upper end sides of the outer side surface and the inner side surface.

Preferably, the linear element rows are sewn to each of the fastener tapes, a projection is projected on an upper side of the sewing thread on a front surface portion of the body portion, and the groove is carved in the projection.

Preferably, the protrusion part formed on the body part is formed in a shape such that a front surface of the protrusion part protrudes higher than a front surface of the body part.

Drawings

FIG. 1 is a front view of a linear slide fastener with a top end stop;

FIG. 2 is a front view of a top stop disposed on one of the zipper stringers;

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

FIG. 4 is a front view of a top end stop disposed on another stringer of a zipper;

FIG. 5 is a cross-sectional view of the top stop taken along line V-V in FIG. 4;

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

FIG. 7 is a sectional view of a main portion of the fastener chain body with a top end stopper;

FIG. 8 is a sectional view of a main portion of a longitudinal strip of the slide fastener with a top end stop according to the second embodiment of the present invention;

FIG. 9 is a front view of a top stop disposed on one of the fastener stringers in accordance with a third embodiment of the present invention;

FIG. 10 is a cross-sectional view of the top stop taken along line X-X in FIG. 9;

FIG. 11 is a front view of a top end stop disposed on another fastener stringer;

FIG. 12 is a cross-sectional view of the top stop taken along line XII-XII in FIG. 11;

FIG. 13 is a sectional view of a main part of the fastener body with the top end stop;

FIG. 14 is a front view of a fastener body with a top end stop according to a fourth embodiment of the invention;

FIG. 15 is a cross-sectional view of the top stop taken along line XV-XV in FIG. 14;

FIG. 16 is a front elevational view of a longitudinal strip of a zipper with top end stops according to a fifth embodiment of the present invention;

FIG. 17 is a cross-sectional view of the top stop taken along line XVII-XVII of FIG. 16;

FIG. 18 is a perspective view of a longitudinal strip of the zipper with a top stop according to a third embodiment of the present invention; and

fig. 19 is a perspective view showing a known top end stop and slider.

Detailed Description

According to the top end stop of the coil-shaped or zigzag-shaped linear fastener element row of the present invention, as shown in fig. 1 to 8, the coil-shaped or zigzag-shaped linear fastener element row 4 made of synthetic resin is fixed to the opposite side edges 5 of the pair of right and left fastener tapes 3 by sewing through the core thread 6 with the sewing thread 7 so as to form the right and left fastener stringers 2. The top end stopper 10 is molded from a synthetic resin by injection molding and is fixed to the top end portion of each linear sprocket row 4.

The top end stop 10 is formed of synthetic resin by injection molding so as to be in contact with the linear elements 21 at the tip end portions of the linear element rows 4 fixed to each of the opposite side edges 5 of the fastener tape 3. At this time, the plurality of linear elements 21 are covered and covered with the synthetic resin, and the gaps between the adjacent linear elements 21 are filled with the injected synthetic resin. As a result, not only the linear elements 21 but also the core thread 6 and the sewing thread 7 existing on the front and rear surfaces and the opposite side edges 5 provided around the linear elements 21 are covered and concealed.

The top end stop 10 has a main body portion 13, and the main body portion 13 covers the plurality of linear elements 21 by masking. A body portion 13 is formed on the front and rear surfaces of the fastener tape so as to straddle each of the opposing side edges 5 of the fastener tape 3. As a result, the top end stop has a substantially C-shaped section. The body portion 13 includes a front surface portion 14 and a rear surface portion 15. A front surface portion 14 is formed on the front surface side on the fastener tape 3 so as to cover the plurality of linear elements 21, the core thread 6 provided around the elements 21, the sewing thread 7 and the front surface of the fastener tape 3, and a rear surface portion 15 is formed on the rear surface side of the fastener tape 3 so as to cover the sewing thread 7 existing on the rear surface of the fastener tape 3. The front surface portion 14 is made thicker than the rear surface portion 15. The body portion 13 includes an outer side surface 16, an inner side surface 17, a top end surface 18, and a bottom end surface 19. The outside surface 16 and the inside surface 17 are opposed to each other in the width direction of the fastener tape 3. The top end surface 18 and the bottom end surface 19 are opposed to each other in the longitudinal direction of the fastener tape 3.

The expanded-outward portion 12 is formed on the outer side surface 16 near the tip end surface 18 on the side of the coupling head 22 of the linear fastener element 21, and the expanded portion 12 is in contact with the side surface of a diamond (diamond)30 formed in the body 29 of the slider 28. Further, a projecting portion 11 projecting inward of the fastener tape 3 is provided on the inverted portion 23 side of the element 21, on the inner side surface 17, in the vicinity of the tip end surface 18. The protruding portion 11 is configured to contact the front end of a flange 31 formed on the body 29 of the slider 28 to be loaded.

As shown in fig. 1, the other end portion of the linear link teeth row 4 may be configured to be opened by fixing an opening device 33 or to be closed by fixing a bottom end stopper instead of the opening device 33, the opening device 33 including a box 34, a box pin 35, and a latch 36. In the case of the fastener stringer 2 provided with the top end stop 10, the top end stop 10 conceals the core thread 6, the sewing thread 7, and the side edges of the fastener tape 3 and the plurality of linear elements 21. Even when the body 29 of the slider 28 comes into contact with the top end stopper 10 due to the sliding movement of the slider 28, the top end stopper 10 is firmly fixed on the end of the linear element row 4. Further, a durable top end stop of the linear slide fastener can be obtained without any special treatment of the body 29 of the slider 28.

According to the linear fastener elements of the coil or zigzag shape of the other embodiment of the present invention as shown in fig. 9 to 15, the coil or zigzag linear element rows 4 made of synthetic resin are fixed to the opposite side edges 5 of the right and left fastener tapes 3 by sewing with the double knit stitch sewing thread 7 with the core thread 6 inserted thereinto so as to form the fastener chain body 1. The linear element row 4 is cut and removed by a predetermined length from the fastener body 1 to form a space portion 8. By using this space portion 8, a top end stopper 10 made of synthetic resin is injection-molded onto the end of the linear sprocket row 4.

As for the shape of the top end stop, the main body portion 13 is formed in a shape to cover and cover the plurality of linear elements 21 sewn and fixed on the front surface side of the fastener tape 3. The flat surface shape of the main body portion 13 is the same as that in the above-described embodiment, however, a protrusion 37 protruding in the longitudinal direction of the main body portion 13 is formed on the front surface portion 14 of the main body portion 13, on the upper side, i.e., on the sewing line for the stitch-like sprocket row 4, and an inward concave groove 38 is also formed at the center of the protrusion 37.

The projection 37 of the top end stop 10 can enter and exit the guide groove of the slider 28. But it is made in a shape that prevents the top end stopper from rattling (ratele) in the guide groove. Moreover, the projection 37 also covers the sewing thread 7 so as not to be exposed on the front surface of the top end stop 10 even if the position of the sewing thread 7 is shifted to the front surface side of the top end stop 10 due to the injection pressure at the time of molding the top end stop 10. Further, at the time of molding the top end stopper 10, the projecting portion formed in the mold for forming the groove 38 presses the sewing thread 7 in a relaxed state formed in the space portion 8 in the fastener body 1 from above to tighten the sewing thread 7, so that the sewing thread 7 is prevented from being exposed on the front surface portion 14 of the top end stopper 10 in advance, thereby forming the top end stopper 10 of high quality.

First embodiment

The top end stop of the slide fastener having the coil-shaped or zigzag-shaped linear element rows according to the first embodiment of the present invention will be described below. According to the top end stop of the linear slide fastener described in the first embodiment shown in fig. 1 to 7, monofilaments made of synthetic resin such as polyamide or polyester are formed in a coil-like or zigzag manner on the opposite side edges 5 of a pair of right and left fastener tapes 3 in a fastener stringer 2. Then, a linear element row 4 is formed, which is constituted by a plurality of linear elements 21 joined to each other in the longitudinal direction of the fastener tape 3. The core thread 6 is inserted inside the linear element rows 4, and the core thread 6 and the linear element rows 4 are fixed to the side edge of each fastener tape 3 by sewing with the sewing thread 7. Each of the linear fastener elements 21 is constituted by a coupling head 22 projecting outward from a side edge of the fastener tape 3, an inverted portion 23 located inside the fastener tape 3, and an upper leg portion 24 and a lower leg portion 25 for connecting the coupling head 22 with the inverted portion 23. The core wire 6 is inserted into an inner space surrounded by the coupling head 22, the inverting portion 23, the upper leg portion 24, and the lower leg portion 25. The linear element rows 4 are configured such that a plurality of linear elements 21 are arranged in the longitudinal direction of the fastener tape 3 so that the right and left linear element rows 4 can be engaged with or disengaged from each other.

The top end stoppers 10 are provided on the right and left fastener stringers 2, respectively, which constitute the fastener body 1. The top end stop 10 is formed at the top end portion of the linear element row 4 of one longitudinal fastener stringer 2 as shown in fig. 2, and the other top end stop 10 is formed at the top end portion of the linear element row 4 of the other longitudinal fastener stringer 2 as shown in fig. 4. As shown in fig. 3 and 5, a top end stopper 10 is fixed to each of the opposite side edges 5 of the fastener tape 3 by inserting a core thread 6 through the inside of the linear element rows 4 and sewing the core thread 6 with a sewing thread 7 in a double-chain stitch. In this linear element row 4, the tip end stopper 10 is formed by injection molding with a thermoplastic resin such as polyamide, polyacetal, polypropylene, or polyethylene terephthalate so that a plurality of adjacent linear elements 21 at the tip end portion are masked. The top end stop 10 is formed in such a manner that the resin covers the surfaces of the plurality of linear elements 21 and the resin fills the gaps 26 between the adjacent linear elements 21 and the space surrounded by the coupling head 22, the upper leg portion 24, the lower leg portion 25 and the core wire 6, that is, the coupling space into which the coupling head 22 of the paired linear elements 21 enters when the opposing linear elements 21 are engaged with each other.

According to this embodiment, the top end stopper 10 is formed at the tip end portion of each of the rear and left fastener stringers 2 by covering and capping the two linear elements 21 with resin, so that the resin portion filling the coupling space 27 of the adjacent linear elements 21 is connected in the front-rear direction by the filled resin portion in the gap 26 between the linear elements. The resin portion filling the coupling spaces 27 of the linear elements 21 provides parallelism with the longitudinal direction of the linear element rows 4 inside the main body portion 13 of the top end stop 10, and is disposed on the same line L connecting the plurality of coupling spaces 27.

The configuration of the top end stop 10 is defined such that the main body portion 13 covers up and covers the plurality of linear sprockets 21 at the top end portion of the linear sprocket row 4, as shown in fig. 2 to 6. The outer side surface 16 on the side of the coupling head 22 of the linear element 21 in the body portion 13 slightly protrudes outward from the front end of the coupling head 22 and forms a plane which is substantially parallel to a tangent line connecting adjacent coupling heads 22. The body portion 13 has an expanded portion 12, the expanded portion 12 being expanded outwardly on the outer side surface 16 on the side of the upper end surface 18, that is, on the side opposite to the bottom end surface 19, the bottom end surface 19 abutting the linear elements 21 not covered with the body portion 13, so that the expanded portion 12 is in contact with the side surface of the diamond 30 formed on the body 29 of the slider 28. The expanded portion is inclined at a gradient descending from its expanded end toward the bottom end surface 19 so as to form a slope intersecting the outer side surface 16. The ramps form surfaces that contact the side surfaces of the rhomboid 30.

The inside surface 17 on the side of the inverted portion 23 of the linear element 21 in the main body portion 13 slightly protrudes toward the inside of the fastener tape 3 with respect to the end of the inverted portion 23 and forms a plane substantially parallel to a tangent line connecting the ends of several adjacent inverted portions 23. The projecting portion 11 projecting inward of the fastener stringer 2 is provided on the side of the upper end surface 18 of the inner side surface 17, that is, on the side opposite to the bottom end surface 19, which bottom end surface 19 abuts the linear element not covered with the main body portion 13. The protruding portion is formed so as to contact the front end of a flange 31 formed in a body 29 of a slider 28 attached to the fastener chain body 1. More specifically, the top end stop 10 has an expanded portion 12 and a protruding portion 11, the expanded portion 12 and the protruding portion 11 are on an upper half portion on the side of an upper end surface 18 of the main body portion 13, and the upper half portion is formed wide in the width direction. On the other hand, the lower half portion on the lower end surface 19 side of the main body portion 13 has a width slightly larger than a dimension from the end of the coupling head 22 up to the end of the inverted portion 23 of the covered linear element 21, and the lower half portion is formed narrower than the upper half portion. In addition, the top end stopper 10 is formed entirely with an equal thickness, and therefore the inner surface of the body 29 of the slider 28 does not need to be treated in any way.

Since the front surface portion 14 of the main body 13 has a plurality of linear elements 21 buried therein, the front surface portion 14 is made larger than the thickness of the linear elements 21. On the other hand, the rear surface portion 15 is made smaller in thickness than the front surface portion 14 because nothing is masked therein. The rear surface portion 15 is not an indispensable component of the top end stop 10, and the top end stop 10 without the rear surface portion 15 may be present. When the top end stop 10 is fixed to the linear element row 4, the rear surface portion 15 is provided so that the rear surface portion 15 can cover the rear surface of the fastener tape 3 in a contact state. Therefore, the contact area between the top end stopper 10 and the fastener tape 3 is increased to improve the fixing strength of the top stopper 10.

As shown in fig. 1, the slide fastener is made openable by forming an opening device 33 near the bottom end portion of the linear element row 4 by injection molding using a thermoplastic resin such as polyamide, polyacetal, polypropylene, or polyethylene terephthalate, the opening device 33 including a box 34, a box pin 35, and a latch 36. Alternatively, it can be made to close by fixing a suitable bottom end stop instead of the opening device 33. As shown in fig. 7, the respective linear element rows 4 of the right and left fastener stringers 2 move through the Y-shaped element guide grooves 32 formed inside the body 29 of the slider 28, thereby being able to engage or disengage the coupling heads 22 of the linear elements 21. The Y-shaped guide groove 32 is formed by disposing the rhomboid 30 on one side of the shoulder opening (shoulder mouth) of the main body 29, that is, on the front end side in the front-rear direction of the main body 29 and by disposing the flanges 31 on the left and right sides of the main body 29. As a result, when the linear element 21 moves in the guide groove 32, the side surface of the rhomboid 30 faces the coupling head 22 of the element 21 moving in the guide groove 32, while the inner surface of the flange 31 faces the inverted portion 23 of the element 21 moving in the guide groove 32, thereby guiding the movement of the linear element 21 in the guide groove 32.

Even when the main body 29 of the slider 28 collides with the top end stop 10 after the slider 28 is slid as shown in fig. 7, most of the top end stop 10 is accommodated inside the main body 29 of the slider 28. Thus, the protruding portion 11 of the top end stop 10 contacts the front end of the flange 31 formed in the body 29, and the expanded portion of the top end stop 10 contacts the diamond 30 formed in the body 29 of the slider 28. As a result, the top end stop 10 cannot pass through the guide groove 32 of the slider 28, which easily blocks the slider 28.

When an excessive pulling force is applied to the slider 28 held in contact with the projecting portion 11 of the top end stop 10, the top end stop 10 rotates around the contact portion between the projecting portion 11 and the flange 31 of the slider 28, so that the expanded portion 12 of the top end stop 10 comes into contact with the side surface of the rhomboid 30 of the slider 28. At this time, in terms of the relationship of the top end stop 10 and the slider 28, the projecting portion 11 of the top end stop 10 comes into contact with the flange 31 of the slider 28, and the expanding portion 12 of the top end stop 10 comes into contact with the side surface of the rhomboid 30 of the slider 28, so that the top end stop and the slider 28 come into contact with each other at two positions. As a result, the action of passing the top end stopper 10 through the guide groove 32 is reliably stopped to prevent the slider 28 from slipping out of the fastener chain body 1.

Second embodiment

As shown in fig. 8, the top end stop of the slide fastener with linear element rows according to the second embodiment of the present invention has a feature that the top end stop 10 is formed only on one of the fastener stringers 2 of the fastener body 1, although when the opening device 33 is fixed to the bottom end of the linear element row 4, the top end stop 10 is fixed to the top end portion of the linear element row 4 provided with the box pin 35, and whether or not the same top end stop 10 is fixed to the fastener stringer 2 on the side of the insert pin 36 can be freely decided.

The top end stopper 10 prevents the slider from slipping out from the top end of the linear element row 4 on the side to which the box pin 35 is fixed. When the slider 28 is pulled strongly, the projecting portion 11 of the top end stop 10 comes into contact with the front end of the flange 31 in the guide groove 32 of the body 29, and the expanding portion 12 rotates to the side of the rhomboid 30 and comes into contact therewith, thereby preventing the top end stop 10 from invading further into the guide groove 32. Meanwhile, the top end stop 10 may be fixed to only one of the fastener stringers 2 even if the end of the fastener chain body 1 is designed to be closed.

Third embodiment

The top end stop of the slide fastener with the linear fastener element rows according to the third embodiment of the invention shown in fig. 9 to 13 has one feature that: the rows of teeth 4 with the core thread 6 inserted thereinto are fixed to the opposite side edges 5 of each fastener tape 3 by sewing with the sewing thread 7 of the double-knit chain stitch so as to complete the fastener stringer 2. A space portion 8 excluding the fastener element row 4 is formed at an end portion of the fastener stringer 2 where a top end stop 10 is formed in a shape to cover and conceal a plurality of linear fastener elements 21 existing at the end portion. The top end stop 10 is injection-molded with a thermoplastic resin on one surface of the fastener tape 3 on the side carrying the linear element row 4. Of course, as shown in fig. 3, the tip stopper 10 can be formed in a shape of pinching (nipping) the fastener tape 3.

In order to form the space portion 8 free from the linear element row 4 at a predetermined position of the fastener stringer 2, the upper leg portion 24 and the lower leg portion 25 projecting from the opposite side edges 5 of the fastener tape 3 on the side of the coupling head 22 of the linear element row 4 are cut by a predetermined length and pulled from the side of the inverted portion 23 to pull and remove the linear element row 4 from the sewing thread 7. As a result, when the top end stop 10 is injection-molded with the slackened double-pillar stitch sewing thread, the sewing thread is easily deviated and exposed on the front surface of the top end stop 10 due to the injection pressure.

In this embodiment, an improvement is added in view of the above-described problem. That is, the top end stopper 10 is formed at an upper position of the sewing thread 7 for sewing the plurality of linear elements 21 facing the space portion 8 of the fastener stringer 2, wherein the protrusion 37 protruding on the front surface of the main body portion 13 of the top end stopper 10 is formed so as to prevent the sewing thread 7 from being exposed on the front surface in advance even if the sewing thread 7 is deviated by the injection pressure. The projection 37 is provided above the linear element 21 at the tip of the linear element row 4, which is one of the plurality of linear elements 21 hidden in the body portion 13, adjacent to the space portion 8. This is because the sewing thread for the linear sprockets 21 fixed at the tip end tends to be slackened and is liable to be deviated by the injection pressure due to the influence of the sewing thread 7 in a slackened state in the space portion 8. On the other hand, a concave groove 38 is formed in the center portion of the sewing thread for sewing the linear elements 21 located at the top ends of the fastener stringers 2, so that the sewing thread 7 is pressed onto the fastener tape 3 in a manner straddling the upper leg portions 24 of the linear elements 21 at the time of injection molding of the top stopper 10, whereby the sewing thread 7 is prevented from being displaced in advance.

Further, as shown in fig. 10, on the top stopper 10, the projecting portion 11 is formed in such a manner that the front surface of the projecting portion 11 projects higher than the front surface of the main body portion 13. For example, as shown in the drawings, when a height T2 from the front surface of the fastener tape 3, i.e., the rear surface of the main body portion 13 to the front surface of the main body portion 13 and a height from the front surface of the fastener tape 3 to the front surface of the projecting portion 11 are compared on the basis of the front surface of the fastener tape 3, the condition of T2 > T1 is satisfied. Due to this condition, the portion to be in contact with the flange 31 of the slider 28 is projected to be thick and solid, whereby the projecting portion 11 is not broken if the flange 31 of the slider violently hits the projecting portion 11.

The top end stopper 10 shown in fig. 11 and 12 does not have the projecting portion 11 with a function of preventing slipping by contacting with the flange 31 of the slider 28 on its one side. However, the top end stopper 10 includes the projection 37 and the groove 38 on the sewing thread 7 for sewing the plurality of linear sprockets 21 facing the space portion 8, thereby preventing the sewing thread from being deviated. The fastener stringer 2 with the top end stop 10 is used in pair with the fastener stringer 2 shown in fig. 9, for example, in a state shown in fig. 13 in standby. When it is actually used, the box pin 35 is fixed to the bottom of the fastener stringer 2 on the side of the top end stop 10 having the projecting portion 11, and the insert pin 36 is fixed to the bottom of the fastener stringer 2 on the side of the top end stop having no projecting portion 11 to form a shape suitable for the fastener chain body 1 to serve as an opening means or a reverse opening means.

Meanwhile, as shown in fig. 9 to 13, the material usage can be reduced by forming the step portion 39 in which the front surface of the main body portion 13 of the locking stopper 10 sinks deeper on the coupling head portion 22 side.

Fourth embodiment

The top end stop 10 of the slide fastener with linear fastener element rows according to the fourth embodiment of the invention shown in fig. 14 and 15 has one feature that: the rows of teeth 4 having the core thread 6 inserted therein are fixed on the opposite side edges 5 of each fastener tape 3 by sewing with the sewing thread 7 of the double-knit chain stitch. The top end stop 10 is injection-molded in a shape to one surface of the fastener tape 3 with a thermoplastic resin, covering and covering the plurality of linear elements 21 facing the space portion 8, and the linear element rows 4 of the fastener stringers 2 are removed from the space portion 8. The planar shape of the top end-stop 10 to be molded is substantially the same as that in the first embodiment. Both the right and left top end stoppers 10 have a shape having a projecting portion 11 to be brought into contact with a flange 31 of a slider 28, and the top end stoppers 10 are molded on the surface of the fastener tape 3 to which the linear element rows 4 are sewn. These fastener stringers 2 are used for a large-sized slide fastener, and each top end stop 10 can be formed into a shape to clamp the fastener tape 3.

On the front surface of the main body portion 13, the top end stopper 10 has a V-shaped groove 38 engraved on the upper side, i.e., at a position along the sewing line of the fastener stringer 2, over the entire length of the top end stopper 10. By providing this groove 38, the protruding ridge in the mold for forming this groove 38 prevents the sewing thread 7 to be concealed in the top end stop 10 at all positions from being displaced due to the injection pressure at the time of injection molding, thereby preventing the sewing thread 7 from being exposed on the front surface of the top end stop 10.

Fifth embodiment

The top end stop 10 of the slide fastener with linear fastener element rows according to the fifth embodiment of the invention shown in fig. 16 and 17 has one feature that: the element rows 4 with the core thread 6 inserted inside are fixed to the opposite side edges 5 of each fastener tape 3 by sewing with the sewing thread 7 of the double-chain stitch. The top end stop 10 is injection-molded in a shape on one surface of the fastener tape 3 with a thermoplastic resin, covering and covering the plurality of linear elements 21 facing the space portion 8, from which the linear element rows 4 of the fastener stringer 2 are removed from the space portion 8. The planar shape of the top end stop 10 to be molded is substantially the same as that of the third embodiment including the body portion 13, the body portion 13 having the protruding portion 11 to be brought into contact with the flange 31 of the slider 28.

On the front surface of the main body portion 13 of the top end stopper 10, projections 37 projecting upward, that is, above the position along the sewing line of the fastener stringer 2 are formed on the plurality of linear elements 21. The projection 37 is formed in a shape to be inserted into the guide groove 32 of the slider 28 so that the front end of the flange 31 of the slider 28 comes into contact with the projecting portion 11 of the top end stop 10. By forming the projection 37 on the front surface of the top end stopper 10, rattling in the guide groove 32 of the slider 28 is eliminated, and even if the sewing thread 7 is displaced due to injection pressure at the time of molding the top end stopper 10, exposure of the sewing thread on the front surface of the top end stopper 10 can be prevented in advance.

Sixth embodiment

Next, a description will be given of a slide fastener top end stop having a linear element row according to a sixth embodiment of the present invention shown in fig. 18. The top end stopper 10 fixed to the top end of the linear element row 4 on the fastener stringer 2 by injection molding is so shaped as to cover and hide the plurality of linear elements 21 at the top end. At this time, not only the linear fastener elements 21 but also the inserted core thread 6, the sewing thread 7 for sewing, and the side edge of the fastener tape 3 are covered with the top end stopper 10. According to this embodiment, the top end stop 10 conceals and covers 3 linear sprockets 21.

The top end stopper 10 is made to have an equal thickness as a whole and is accommodated in the body 29 of the slider 28. An outwardly projecting protrusion 20 is provided on the front surface portion 14 of the body portion 13 of the top end stop 10 to stop the slider 28 without mounting the projecting portion 11 and the expanding portion 12 as described in the previous embodiments. This makes it possible to stop the slider 28 by bringing it into contact with the end on the shoulder opening side of the body 29 of the slider 28.

The fastener chain body is used at an opening portion of a garment such as a fly of a garment, a bag, and other products, in which a top end stopper is molded on a fastener stringer of the fastener chain body by covering gaps among a plurality of linear elements with a synthetic resin.

Claims (6)

1. A slide fastener comprising a linear element row (4) fixed along each of opposite side edges (5) of a fastener tape (3) and a top end stopper (10) made of synthetic resin fixed to a top end portion of each linear element row (4), characterized in that the top end stopper (10) covers a plurality of adjacent linear elements (21) and is filled in the linear elements (21) so as to form a body portion (13), the linear element row (4) is sewn to each of said fastener tapes (3), and a groove (38) is engraved on a front surface portion (14) of the body portion (13) on an upper side of a sewing line (7).

2. A slide fastener according to claim 1, wherein the top end stop (10) has a projecting portion (11), said projecting portion (11) projecting from an inside surface (17) of the main body portion (13) on the inside of one of said fastener tapes (3) along the tape surface and contacting with the flange (31) of the slider (28).

3. A slide fastener according to claim 2, wherein the top end stop (10) has an expanded portion (12) expanded from an outside surface (16) on the side of the body portion (13) opposite to said inside surface (17) on the outside of one of the fastener tapes (3) and brought into contact with the diamond (30) of the slider (28).

4. A slide fastener according to claim 3, wherein the projecting portion (11) and the expanding portion (12) formed on the body portion (13) are located at upper end sides of the outer side surface (16) and the inner side surface (17).

5. The slide fastener according to claim 1, wherein said linear element row (4) is sewn to each of said fastener tapes (3), a projection (37) is projected on the front surface portion (14) of the body portion (13) on the upper side of the sewing thread (7), and said groove (38) is engraved in the projection (37).

6. The slide fastener according to claim 2, wherein the projection (11) formed on said body portion (13) is formed in a shape such that a front surface of the projection (11) projects higher than a front surface of the body portion (13).