CN105307533B - Slide fastener and injection molding mold with detachable inlay - Google Patents

Abstract

The invention relates to a zipper with a detachable insert and a mold for injection molding. The zipper (1, 2, 3) with the detachable insert (30, 80, 100) of the present invention comprises a bolt (31, 81, 101) and a cylinder pin (32, 82, 102), and in the bolt ( 31, 81, 101) and at least one of the sides facing the pins of the pins (32, 82, 102), at least one groove portion (31h, 81h, 101h). The groove portion (31h, 81h, 101h) is opened on the front or back of the plug pin (31, 81, 101) or cylinder pin (32, 82, 102), and is continuously extended to the plug pin (31, 81, 101 ) or the height position corresponding to the cloth tape position in the barrel pin (32, 82, 102). According to this zipper (1, 2, 3), it is difficult to produce the bolt of the zipper tape (11, 61) from the cylinder pin of the bolt (31, 81, 101) to the side or the cylinder pin (32, 82, 102). Exposed or protruding to the side.

Description

Zipper with separable insert and mold for injection molding

technical field

The present invention relates to a slide fastener with a separable insert including a plug and a barrel pin made of synthetic resin, and an injection molding mold for injection molding of the plug or the barrel pin.

Background technique

A common type of zipper usually includes: a pair of zipper chain belts, a chain tooth row is formed along the length direction of the belt at the side edge of the belt facing the left and right pair of zipper belts; and a slider can be slidably installed on the Left and right sprocket rows. In addition, a slider used for a common type of slide fastener includes: a slider main body including a substantially Y-shaped element guide path between upper and lower blades connected to an inlet-side end through a guide post; and a slider that can It is held by the handle mounting column arranged on the upper wing of the slider main body so as to be rotatable.

In this common type of slide fastener, the left and right element rows are meshed by sliding the slider, and the mesh of the element rows is released, whereby the slide fastener can be closed or opened.

In addition, in the common type of zipper, in order to define the sliding range of the slider and prevent the slider from falling off from the chain tooth row, stoppers (sometimes called The case where the upper stopper or the lower stopper) is continuously arranged in the chain tooth row.

In addition, when the meshing of the left and right element rows is completely released, a separable insert may be provided at the end of the fastener stringer so that the left and right fastener stringers can be separated. The detachable insert usually includes: a pin arranged at the end of a zipper chain and continuously arranged on the chain tooth row; a cylinder pin arranged at the end of the other zipper chain and continuously arranged on the chain tooth row ; and an open tail barrel, which protrudes from the end of the cylinder pin and has a pin accommodating portion capable of being plugged in and pulled out.

By arranging the detachable insert on the zipper, for example, in the state where the entire left and right chain element rows have been disengaged, the pin is pulled out from the pin receiving part of the end cylinder, and then the chain element of the slider By taking out the guide path, the left and right fastener stringers can be completely separated. On the other hand, from the state where the left and right zipper strings are separated, the pin is inserted into the pin receiving part of the tail barrel through the element guide path of the slider, and the left and right zipper strings are connected through a separable insert , by sliding the slider in the direction away from the separable insert, the left and right element rows can be meshed and the slide fastener can be closed.

On the other hand, as one type of slide fastener, there is known a concealed slide fastener which can hide an element row with a fastener tape when meshing the left and right element rows. This invisible slide fastener includes left and right fastener stringers and sliders, and each of the fastener stringers is a tape portion that is bent in a U-shape in cross-section at the tape side edge of the fastener tape and folded back in the U-shape. The outer surface of (the sprocket attachment part) forms a sprocket row along the length direction of the tape.

The slider main body of the slider used for the invisible slide fastener includes: a lower flap; left and right flanges having an L-shaped cross-section, erected from the left and right side edges of the lower flap, and bent at approximately right angles in directions approaching each other; The guide column stands upright from the widthwise central portion of the inlet-side end of the lower wing plate; the left and right guide parts protrude from the upper end of the guide column toward the left and right flanges; and the pull tab mounting part is provided on the guide top of the column. Moreover, in this slider main body, the substantially Y-shaped element guide path is formed by the lower blade, the guide column, the left and right L-shaped flange parts, and the left and right guide parts.

Furthermore, the separable insert arranged in such a hidden slide fastener is disclosed in, for example, Japanese Patent Application Laid-Open No. 2008-220842 (Patent Document 1) or International Publication No. 2011/135706.

As shown in FIG. 16 , for example, the detachable insert 120 described in Patent Document 1 includes: a pin 121 disposed at the end of a fastener stringer (first fastener stringer) 131a; a barrel pin 122 disposed at the other end. The end of the zipper string (second zipper string) 131b; and the tailpiece 123 are integrally formed at the end of the cylinder pin 122;

In addition, in the following description, the front-back direction means the longitudinal direction of the fastener stringer 131a, 131b, and is the same direction as the sliding direction in which a slider slides. In particular, the direction in which the slider slides so as to mesh the left and right element rows 132 is set to the front, and the direction in which the slider is slid to release the meshing of the element rows 132 is set to the rear.

The left-right direction refers to the width direction of the pair of fastener stringers 131a, 131b, and is a direction parallel to the tape surface of the tape main body of the fastener tape 133 and perpendicular to the tape longitudinal direction. In addition, the up-and-down direction refers to the direction perpendicular to the tape surface of the tape main body of the fastener tape 133. In particular, the side where the handle of the slider is arranged with respect to the fastener tape 133 is defined as the upper side, and the The direction of the opposite side is set as downward.

The pin 121 of patent document 1 is provided continuously in the element line 132, and is provided so that it may protrude from the end edge (rear end edge) of the tape longitudinal direction in the fastener tape 133. As shown in FIG. In addition, the pin 121 has a substantially U-shaped cross section imitating a substantially U-shaped tape bending portion of the fastener tape 133 , and is fixed to the rear end portion of the fastener tape 133 .

In addition, the pin 121 includes: a pin main body 121a disposed on the side of the sprocket row 132 and fixed to the zipper tape 133; Insert and pull out the following latch receiving part 123a of the split tail barrel 123; the detachable part 121c is protruding from the bolt main body 121a on the side of the main body part of the zipper tape 133, and the bottom of the split tail barrel 123 The detachable part 123d is detached; and the side wall part (not shown) connects the plug pin 121 of the insertion part 121b and the detachment part 121c to the side edge side. In addition, the plug 121 is provided with a horizontal grid-shaped reinforcing portion 125 that extends from the plug body 121 a to the tape main body side and is fixed to the fastener tape 133 .

The insertion part 121b and the detachment part 121c of the plug 121 respectively have a prismatic form that is slightly inclined toward the tape body side of the zipper tape 133 from the side of the plug body 121a toward the top end. The cross-section is approximately square, and the cross-section of the detachable portion 121c is a flat rectangular shape. Furthermore, the slope part which makes the dimension of the tape thickness direction gradually decrease toward a front-end|tip is provided in the front-end|tip part of the detachment part 121c. The side wall portion of the plug 121 is configured to be able to be inserted into a notch portion 123 c described below of the tailpiece 123 .

The cylinder pin 122 of patent document 1 is fixed to the rear end part of the fastener tape 133 so that it may be continuously provided in the element line 132. As shown in FIG. In addition, the cylinder pin 122 and the open tail cylinder 123 are provided with a reinforcement part 124 extending to the side of the tape main body and fixed to the fastener tape 133 in the shape of a horizontal grid.

The tail-opening cylinder 123 of Patent Document 1 is a box-shaped part integrally formed on the rear end of the cylinder pin 122, and includes: the right half, which is formed to extend rearward from the cylinder pin 122; and the left half, which is formed from the cylinder pin 122; The right half protrudes toward the pin 121 side in the tape width direction; and the left half of the open tail tube 123 is formed with a pin receiving portion 123a that opens on the front side and can insert the pin 121 into the inside for storage.

Between the upper wall portion 123b on the upper surface side and the side surface (opposite side surface) on the side opposite to the latch 121 of the right half of the wall portion constituting the latch receiving portion 123a, a front opening is formed with a The side wall portion of the plug 121 is inserted into the notch portion 123c having a width dimension.

Furthermore, on the upper surface side of the upper wall portion 123b disposed on the left half, a disengaged portion 123d for disengaging the disengaging portion 121c of the plug 121 is provided. The detachable part 123d of the open-tail cylinder 123 includes: a horizontal frame part extending in the left-right direction and abutting against the top end of the detachable part 121c of the bolt 121; The end portion on the opposite side of 121 is inclined to the right half side and extends forward; and the detachable portion 123d of the open tail barrel 123 is formed in a hook shape when viewed from above.

According to the invisible slide fastener including the detachable insert 120 of Patent Document 1, since the insertion part 121b and the detachment part 121c of the plug 121 are connected over the entire length direction through the side wall part, the insertion part 121b and the detachment part 121b can be lifted. The strength or durability of the detachable portion 121c.

Furthermore, between the upper wall portion 123b disposed on the left half of the tailpiece 123 and the side surface (facing side) on the side opposite to the plug 121 of the right half, a side wall portion capable of receiving the plug 121 is formed. Therefore, when inserting the pin 121 into the pin accommodating portion 123a of the open tail cylinder 123 through the chain tooth guide path of the slider, it is possible to prevent the lower wing of the slider from being caught in the pin 121. Between the pulling part 121b and the buckle part 121c.

In addition, the side wall portion of the plug 121 can be guided to the notch portion 123c of the tail-opening cylinder 123, and the insertion and extraction portion 121b of the plug 121 can be smoothly inserted into the plug-accommodating portion 123a of the tail-opening cylinder 123. The detachment part 121c is smoothly engaged with the detachable part 123d of the tail barrel 123 .

On the other hand, the detachable insert described in Patent Document 2 not only has the configuration of the plug of Patent Document 1, but also has a chain disposed on the second fastener stringer on the side facing the cylinder pin of the plug. The element engaging portion of the fastener element on the rearmost end side of the row of teeth engages, and not only has the structure of the cylinder pin of Patent Document 1, but also has a chain for accommodating the pin on the pin-facing side of the cylinder pin. Composed of accommodating part of the teeth buckle part.

According to the invisible zipper including the separable insert of Patent Document 2, when the left and right zipper strings are separated, the pin is inserted into the tailpiece through the element guide path of the slider, and the invisible zipper is closed. , even if the slider is slid in the locking direction when the pin is not inserted into a specific position of the tail opener, for example, the element engaging portion of the pin will not enter between the zipper elements of the second fastener stringer, Thereby, the slider can be prevented from moving toward the locking direction. Thereby, it is possible to prevent the fastener element from meshing incorrectly between the left and right element rows, to stabilize the meshing of the element rows, and to obtain stable slidability of the slider.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2008-220842

Patent Document 2: Specification of International Publication No. 2011/135706

Contents of the invention

[Problem to be solved by the invention]

In the case of injection-molding the pin or pin (or pin and open end) of the zipper, which constitutes the separable insert, on the zipper tape, usually, the zipper tape is clamped in the first part of the injection molding mold. Mold locking is performed between the first mold (fixed mold) and the second mold (movable mold), and a part of the zipper tape is buried inside to shape the pin or cylinder pin (or cylinder pin and tail cylinder).

However, pins or cylinder pins are usually provided on the fastener tape in such a way as to be connected to the element row, so if it is the case of a normal type of slide fastener, for example, it is formed along the tape side edge of the fastener tape, and if In the case of the invisible zipper, it is formed along the U-shaped tape bending portion of the zipper tape.

However, in the injection molding of pins or cylinder pins, the position of the zipper tape, especially the position of the side edge of the tape, is difficult to stabilize in the cavity space of the injection molding mold, so there may be differences in the position of the zipper tape depending on the molded product. Uneven situation. Therefore, conventionally, a tape hold-down portion for pressing the front and back of the zipper tape is preliminarily provided inside the mold, thereby suppressing the wobbling of the zipper tape in the direction of the front and back of the tape during injection molding, and stabilizing the position of the tape. .

However, such a tape holding portion that presses the front and back of the fastener tape suppresses the movement of the fastener tape in the direction of the front and back of the tape to some extent, but it is difficult to stably limit the width of the fastener stringer. Orientation on the location of the zipper tape. For this reason, there is a problem that, when looking at the injection-molded plug or barrel pin, a part of the zipper tape comes from the side of the plug facing the barrel pin (the side facing the barrel pin) or the side of the barrel pin facing the pin. The side (the side facing the pin) is exposed or protruding.

Especially in the case of invisible zippers, the U-shaped tape bending portion of the zipper tape’s mounting pin or barrel pin forms a space inside it for the flange portion of the slider to be inserted. Since the direction has a certain thickness dimension and is folded back, the tape bending portion is relatively easy to move in the width direction of the fastener stringer. Therefore, in the injection molding of the pin or cylinder pin used for the concealed slide fastener, the above-mentioned problems such as exposure or protrusion of the fastener tape tend to occur as compared with the conventional type of slide fastener.

If a part of the zipper tape is exposed or protrudes from the pin-facing side of the pin or the pin-facing side of the pin in this way, not only will the appearance quality (beauty) of the zipper (especially the separable insert) be reduced, but also It also reduces the strength of the bolt or cylinder pin. Therefore, when the plug or barrel pin is stretched or twisted during the operation of the separable insert, there is a problem that breakage tends to occur in the plug or barrel pin, resulting in a decrease in the durability of the separable insert.

Furthermore, if a part of the zipper tape protrudes from the side facing the cylinder pin of the pin or the side facing the pin of the cylinder pin, when the pin is inserted into the pin accommodating portion of the tailpiece, or is received from the pin of the tailpiece, When the part is pulled out, a part of the zipper tape is likely to interfere with the latch or the cylinder pin, thereby reducing the operability of the separable insert.

The present invention has been made in view of the aforementioned conventional problems, and its specific purpose is to provide a slide fastener with a separable insert that is a cylinder that suppresses the self-insertion of the fastener tape. The side of the pin facing or the pin of the barrel pin is exposed or protruded to the side, which improves the appearance quality of the separable insert, and is not likely to cause a decrease in the strength of the pin or barrel pin, and a decrease in the operability of the separable insert Furthermore, a specific object of the present invention is to provide an injection molding die for injection molding a pin or a cylinder pin constituting the slide fastener with a separable insert.

[Technical means to solve the problem]

In order to achieve the above object, the zipper with a detachable insert provided by the present invention is a basic structure, and its most important feature is to include: a pair of first and second zipper strings, which are formed by the left and right zipper tapes. The side edges of the opposite cloth tape form a chain tooth row; the pin is fixed on one end of the first zipper chain belt and is continuously arranged on the chain tooth row; the barrel pin is fixed on the second zipper chain belt and at least one slider to engage and separate the left and right chain tooth rows; and on the side end surface of the pin opposite to the cylinder pin, At least one of the side end faces of the cylinder pin opposite to the bolt is provided with at least one groove along the front and back direction of the cloth tape, and the groove is formed on the side of the bolt or the cylinder pin. Openings on the first surface or the second surface exposed on the front and back direction of the front and back, and at least continuously extend to the front and back direction of the zipper tape embedded in the pin or the barrel pin and the cloth tape The height position corresponding to the position.

In the zipper with a detachable insert of the present invention, preferably, the zipper tape includes: a tape main body part; Extended, and bent into a U-shape along the length direction of the tape; and a sprocket installation portion, further extended from the tape bending portion toward the width direction of the tape, and installed with the sprocket row; and constituted The meshing heads of the fastener elements of the element row protrude from the tape bending portion of the fastener tape to the outside of the tape in the left-right direction.

In addition, in the slide fastener according to the present invention, it is preferable that the groove portion is disposed in the vicinity of a tape end edge in the tape longitudinal direction of the embedded fastener tape.

Furthermore, it is preferable that a recessed portion is recessed on the first surface or the second surface of the plug pin or the cylinder pin in which the groove portion is recessed, and the bottom of the recessed portion includes the The first surface or the second surface of the first surface or the second surface opened by the pin or the groove portion of the pin is the closest to the tape surface of the zipper tape, and the groove portion is arranged to be opposite to The concave parts are arranged in the tape width direction of the zipper tape.

Furthermore, according to the present invention, there is provided a mold for injection molding, the main feature of which is that it is used for injection molding of the pin or barrel pin constituting the slide fastener with a separable insert as described above, and The injection molding is performed with the zipper tape sandwiched between a first die and a second die, and at least one of the first die and the second die has a tape position regulating protrusion. The tape position restricting protrusion protrudes toward the cavity space from the flat mold cavity surface formed by forming the cylinder pin opposite side end surface of the plug pin, or the cylinder pin opposite side end surface of the cylinder pin. , and contact with the side edge of the zipper tape to limit the position of the zipper tape.

[Invention effect]

In the zipper with a detachable insert of the present invention, at least one of the side wall portion facing the pin of the pin and the side wall portion facing the pin of the pin has at least one groove portion, and the groove portion is The side end surface opposite to the cylinder pin of the bolt or the side end surface of the cylinder pin opposite to the cylinder pin is recessed towards the zipper tape embedded in the bolt or the cylinder pin.

In addition, each groove portion is formed on the plug or barrel pin along the front and back direction of the tape, and opens on the first surface or the second surface exposed in the front and back direction of the tape of the plug or barrel pin. Furthermore, each groove portion is formed continuously from the first surface or the second surface of the pin or the barrel pin at least to the front and back direction of the zipper tape embedded in the pin or the barrel pin in the front and back direction of the tape. The height position corresponding to the tape position (tape area). In other words, each groove portion is formed continuously along the front and back direction of the tape until it is closest to the first surface or the second surface on which the groove portion of the pin or pin is opened. The height position of the front and back direction of the tape surface of the zipper tape.

Such grooves are formed on the plug or the barrel pin as a molded body by providing a tape position regulating protrusion for restricting the position of the fastener tape on the cavity surface of the mold for injection molding the pin or the barrel pin. By providing the groove portion as the locus of such a tape position regulating protrusion on the cylinder pin facing side wall portion of the plug pin or the plug pin facing side wall portion of the cylinder pin, at the tape position where the zipper tape is molded Since the injection molding of the pin or the barrel pin is carried out in a state where the restricting protrusion is pressed, it is difficult for a part of the zipper tape to protrude or protrude from the side facing the barrel pin of the injection molded pin or the side facing the pin of the barrel pin. out of the situation, so that the zipper tape can be stably buried inside the latch or barrel pin.

Therefore, the zipper with the detachable insert of the present invention can reduce the strength of the pin or the pin due to the zipper tape being exposed or protruding from the side facing the pin of the pin or the side facing the pin of the pin. Therefore, it is configured as a high-quality slide fastener with excellent appearance quality, excellent strength and durability of the latch or barrel pin, and good operability of the separable insert.

The zipper with the detachable insert of the present invention is particularly preferable when it is constituted as a so-called invisible zipper, that is, the zipper tape includes: a tape main body; One side edge of the belt is extended toward the width direction of the tape, and is bent in a U shape along the length direction of the tape; tooth row; and the meshing heads of the zipper teeth constituting the chain tooth row protrude from the tape bending portion of the zipper tape to the outside of the tape in the left and right direction.

That is to say, in the structure of the conventional invisible slide fastener, as mentioned above, it is easy to produce the disadvantages such as that the zipper tape is exposed or protrudes from the opposite side of the pin of the pin or the side of the pin of the pin, but the present invention Even when the slide fastener with a separable insert has a structure as a hidden slide fastener, the above-mentioned problems such as exposure or protruding of the fastener tape do not easily occur. Therefore, the invisible slide fastener which is excellent in the intensity|strength and durability of a pin or a cylinder pin, and the handleability of a separable insert is also favorable is obtained.

In addition, in the slide fastener of the present invention, the groove portion is arranged in the vicinity of the tape end edge in the tape longitudinal direction of the embedded fastener tape, especially in the tape on the side opposite to the embedded fastener tape. Side edges or the vicinity of the tape end edge in the tape length direction in the tape bending portion. Since the groove portion formed by the tape position regulating protrusion of the mold is arranged at such a position, the movement of the zipper tape can be easily suppressed during the injection molding of the plug or cylinder pin, so the zipper tape can be It is stably buried inside the pin or cylinder pin, thus effectively preventing the zipper tape from being exposed or protruding.

Furthermore, in the slide fastener of the present invention, a recessed portion is provided on the first surface or the second surface of the plug pin or the barrel pin that is recessed with the groove portion, and the bottom of the recessed portion includes The tape side of the zipper tape to which the first or second surface of the opening is closest. Moreover, the groove|channel part of a plug pin or a cylinder pin is arrange|positioned so that it may line up with the tape width direction of the fastener tape with respect to this recessed part.

Here, the groove portion is arranged so as to be aligned in the tape width direction of the fastener tape with respect to the concave portion, which means that the formation area in the tape length direction of the groove portion is relatively included in the tape width direction. (or overlapping) in the formation area of the tape longitudinal direction in which the recessed part was formed, or the formation area close to this recessed part.

In addition, the recessed portion of the plug or the barrel pin is formed by, for example, a tape holding portion provided to press the zipper tape on the mold during the injection molding of the plug or the barrel pin, One surface or the second surface is recessed in a concave shape or a groove shape.

Therefore, by providing the groove portion and the recessed portion in the above-mentioned relationship on the plug pin or the barrel pin, during the injection molding of the plug pin or the barrel pin, the tape holding portion of the mold can be used to suppress the movement of the zipper tape on the tape. The position of the tape is stabilized by shaking upward in the back direction, and at the same time, the position of the tape side edge of the zipper tape can be firmly restricted by the tape position regulating protrusion. Therefore, exposure or protruding of the fastener tape can be prevented more effectively.

Secondly, the mold for injection molding provided by the present invention is used for the injection molding of the plug pin or cylinder pin of the zipper with a separable insert as described above, and the zipper tape is clamped between the first mold and the second mold. Injection molding is carried out in the state between the two molds, and at least one of the first mold and the second mold has a tape position restricting protrusion, and the tape position restricting protrusion is from the side end surface of the cylinder pin of the plug pin, Or the flat mold cavity surface formed on the opposite side end surface of the pin of the barrel pin protrudes toward the mold cavity space, and contacts the side edge of the zipper tape to limit the position of the zipper tape.

By using such an injection molding die, the first or second fastener stringer can be injection-molded with the pin or the barrel pin, and the pin or the barrel pin can be stably molded in combination with the barrel pin or the barrel pin. The side wall facing the pin is formed with at least one groove having the above-mentioned specific shape, and the fastener tape can be prevented from protruding or protruding from the side facing the pin or the pin. Thereby, it is possible to obtain a high-quality slide fastener with a separable insert that is excellent in appearance quality, has excellent strength and durability of the plug pin or the cylinder pin, and has good operability of the separable insert.

Description of drawings

Fig. 1 is a plan view showing a slide fastener with a separable insert according to Embodiment 1 of the present invention.

Fig. 2 is an enlarged view of main parts showing a separable insert of the slide fastener in an enlarged manner.

Fig. 3 is a perspective view showing a plug constituting the separable insert.

Fig. 4 is a perspective view showing a cylinder pin and a tail cylinder constituting the separable insert.

It is a top view which shows the state which separated the 1st and 2nd fastener stringer.

Fig. 6 is a bottom view showing a state in which the first and second fastener stringers are separated.

Fig. 7 is a sectional view taken along line VII-VII shown in Fig. 5 .

FIG. 8 is an enlarged cross-sectional view of a main part showing an enlarged cross section of a part of the plug.

Fig. 9 is a cross-sectional view showing a cross section of an injection molding die for a plug.

Fig. 10 is a cross-sectional view showing a cross section of a mold for injection molding of a cylinder pin and an open tail cylinder.

Fig. 11 is an explanatory diagram illustrating a state in which a plug is inserted from an introduction port of a slider.

Fig. 12 is an explanatory diagram illustrating a state in which a plug is accommodated in a plug accommodating portion of an open tail cylinder.

Fig. 13 is a plan view partially showing a section of a slide fastener with a separable insert according to Embodiment 2 of the present invention.

Fig. 14 is an enlarged cross-sectional view of main parts showing an enlarged cross-section of the separable insert of the slide fastener.

Fig. 15 is a plan view partially showing a section of a slide fastener with a separable insert according to Embodiment 3 of the present invention.

Fig. 16 is a main part perspective view showing main parts of a conventional slide fastener with a separable insert.

Detailed ways

Hereinafter, preferred embodiments of the present invention will be described in detail while giving examples and referring to the drawings. In addition, this invention is not limited at all by embodiment described below, As long as it has substantially the same structure as this invention, and exhibits the same effect, various changes are possible.

For example, the zippers with separable inserts described in the following embodiments are formed by sewing loop-shaped continuous zipper elements on the zipper tape, or by injecting thermoplastic resin on the zipper tape and arranging them. A plurality of individual zipper elements form each zipper string. However, in the present invention, the method of attaching the fastener elements to the fastener tape is not particularly limited. The zipper tapes are used to form each zipper chain belt.

Example 1

FIG. 1 is a plan view showing a slide fastener with a separable insert according to the first embodiment, and FIG. 2 is an enlarged view of main parts showing the separable insert of the slide fastener in an enlarged manner. In addition, FIG. 3 is a perspective view showing a pin constituting the separable insert, and FIG. 4 is a perspective view showing a barrel pin and a tailpiece constituting the separable insert. Furthermore, FIGS. 5 and 6 are plan views and bottom views showing a state in which the first and second fastener stringers are separated. In particular, in FIG. 6 , the illustration of the sewing thread for sewing the fastener elements to the fastener tape is omitted.

In addition, as mentioned above, in the slide fastener with a separable insert, the front-rear direction refers to the longitudinal direction of the fastener stringer, and is the same direction as the sliding direction in which the slider slides. In particular, the direction in which the slider slides so as to mesh the left and right element rows is set to the front, and the direction to slide the slider so as to release the meshing of the element rows is set to the rear.

In addition, the left-right direction means the width direction of a fastener stringer tape, and is a direction parallel to the tape surface of the tape main body part of a fastener tape and orthogonal to a tape longitudinal direction. Especially in the present embodiment 1 and following embodiments 2 and 3, the top view of the slide fastener with the detachable insert as shown in FIG. The left direction and the right direction in the case of expressing in the form of direction) are defined as left and right, respectively. Furthermore, the so-called up-down direction refers to the direction perpendicular to the tape surface of the tape body part of the zipper tape. In particular, the side where the slider's handle is arranged with respect to the zipper tape is defined as the upper side, and the opposite side is defined as The orientation of is set to Down.

The slide fastener 1 including the separable insert 30 of the first embodiment is configured as a so-called invisible slide fastener 1 . The invisible zipper 1 includes: a pair of first and second zipper strings 10a, 10b, a sprocket row 12 is formed on the tape side edges of the left and right zipper tapes 11; the slider 20 is along the sprocket row 12 can be slidably arranged; the stopper, not shown, is arranged adjacent to the front end side of the sprocket row 12, and prevents the slider 20 from falling off; The end sides are arranged adjacent to each other.

In addition, below, the 1st fastener stringer 10a is made into the left side fastener stringer 10a, and the 2nd fastener stringer 10b is made into the right side fastener stringer 10b, and demonstrates. In addition, the zipper 1 of the present embodiment 1 is as follows, and has main features in the structure of the detachable insert 30 (especially the latch 31 and the cylinder pin 32), and the left and right zipper strings 10a, 10b, The slider 20 and the stopper have substantially the same configuration as the left side and right side fastener stringers, the slider, and the stopper used in a conventional conventional concealed slide fastener.

Specifically, the left and right fastener tapes 10a, 10b in the first embodiment are the outer peripheries of the folded-back piece portion of the fastener tape 11 bent in a U-shape with a sewing thread (not shown). A plurality of fastener elements 13 that are continuous in a ring shape are sewn together to form an element row 12 , and are constituted.

As for the fastener tapes 11 on the left and right, the tape side edge portions on the sides facing each other are bent in a U-shape toward the tape width direction along the tape length direction. In addition, as shown in Figures 7 and 8, each zipper tape 11 includes: a tape main body part 11a disposed on the exposed surface side of the invisible zipper 1; a tape bending part 11b formed from the tape main body part 11a One side edge is continuously extended toward the width direction of the tape, and is bent in a U-shape; and the element mounting portion 11c is a folded piece portion further extending from the side edge of the tape bending portion 11b in the width direction of the tape .

The element row 12 includes a plurality of continuous fastener elements 13 formed by winding a synthetic resin monofilament such as polyamide or polyester into a ring shape. In addition, the element row 12 in this Example 1 may include the some continuous fastener elements which molded synthetic resin monofilament into zigzag shape.

Each of the continuous fastener elements 13 includes: an engaging head 13a; upper and lower legs extending from the engaging head 13a; and a connecting portion for connecting the ends of the upper leg or the lower leg to the adjacent slide fastener The lower leg or the upper leg of the sprocket 13. In addition, each fastener element 13 is such that the core string 14 is inserted between the upper and lower legs, and the engaging head 13a protrudes from the tape bending portion 11b of the fastener tape 11 toward the outside in the tape width direction (left-right direction). In this state, it is sewn to the outer surface side of the element attaching portion 11c of the fastener tape 11 by a double chain stitch with a thread not shown in the figure.

The slider 20 for the concealed slide fastener 1 is a slider equipped with an automatic stop mechanism. The slider 20 includes: a slider main body 21; a stop claw body 22, which can be swingably assembled on the slider body 21; .

The slider main body 21 includes: a lower wing 21a; left and right flanges 21b with an L-shaped cross-section standing from the left and right side edges of the lower wing 21a and bent at approximately right angles in directions approaching each other; guide columns 21c is vertically provided at the center in the width direction of the inlet-side end of the lower blade 21a; and left and right guides protrude from the periphery of the guide post 21c toward the left and right flanges 21b. The stop claw body 22 and the urging member are assembled to the guide column 21c of this slider main body 21, and the handle is hold|maintained by the stop claw body 22. As shown in FIG.

In the slider main body 21, a substantially Y-shaped element guide path is formed by the lower blade 21a, the guide column 21c, the left and right L-shaped flange portions 21b, and the left and right guide portions. The passage communicates between the introduction ports formed on the left and right sides of the guide post 21c and the engagement ports arranged on the opposite sides of the introduction ports.

The separable insert 30, which is a characteristic part of the slide fastener 1 of the first embodiment, includes: a pin 31 fixed to the rear end of the left side fastener stringer (first fastener stringer) 10a; a cylinder pin 32 fixed to the The rear end of the right side fastener stringer (second fastener stringer) 10b; These plug pins 31, barrel pins 32, and tailpieces 33 are formed using thermoplastic resins such as polyamide, polyacetal, polypropylene, and polybutylene terephthalate.

The pin 31 of the first embodiment is fixed to the rear end of the fastener tape 11 so as to be continuously provided on the element row 12 of the left fastener stringer 10a, and a part protrudes from the rear end edge of the fastener tape 11. set up. In addition, the plug 31 is fixed to a part of the outer peripheral surface side and the inner peripheral surface side of the fastener tape 11 , and a part of the rear end portion of the fastener tape 11 is inserted (embedded) in the plug 31 .

The pin 31 includes: a pin main body 31a disposed on the side of the sprocket row 12 and fixed to the zipper tape 11; a sprocket engaging portion 31b disposed on the side end surface of the pin main body 31a opposite to the cylinder pin 32 (hereinafter, Referred to as cylinder pin opposite side); the plug-in part 31c protrudes from the plug body 31a to the rear along the sprocket row 12, and can be inserted and pulled out for the following plug-accommodating part 33c of the open tail tube 33; The detachable part 31d is arranged on the upper side (the tape body part 11a of the zipper tape 11) than the insertion part 31c, and protrudes from the latch body 31a to the rear; and the side wall part 31e connects the insertion part 31c and The cylinder pin of the detachment part 31d is connected to the side edge side.

In addition, the plug 31 is provided with a horizontal grid-shaped left reinforcing portion 34 extending from the plug main body 31a to the side of the tape main body 11a, and the left reinforcing portion 34 sandwiches the tape main body 11a of the fastener tape 11. It is fixed to the outer peripheral surface side and the inner peripheral surface side of the tape body part 11a in a manner. The rear end portion of the fastener tape 11 is properly protected by providing the left side reinforcement portion 34 , thereby improving the durability of the fastener tape 11 .

The plug main body 31a is a substantially U-shaped tape bending portion 11b imitating the fastener tape 11, and is formed so that the cross section becomes a substantially U-shaped or substantially J-shaped. In the plug main body 31a, the portion formed on the outer peripheral surface of the fastener tape 11 on the side of the element mounting portion 11c connects the element row 12 to the insertion/extraction portion 31c of the plug 31, and has a specific thickness dimension (the dimension in the front and back direction) ) so that a part thereof can be fitted into a later-described plug accommodating portion 33c of the tailpiece 33 . Furthermore, a cutout portion 31f into which a part of a detachable portion 33e described later of the tailpiece 33 can be inserted is provided at the rear end portion of the plug main body 31a.

A concave or groove-shaped recessed portion 31g is provided on the upper surface side of the plug main body 31a. As will be described later, the recessed portion 31g is formed as a tape pressing track portion by injection molding the plug 31 while pressing the fastener tape 11 with the tape holding portion 47 provided on the injection molding die of the plug 31 . In this case, the recessed portion 31g is opened on the upper surface of the plug main body 31a, and is recessed to a position on the tape surface of the fastener tape 11 embedded in the plug 31, and the bottom of the recessed portion 31g includes a groove portion. The upper surface of the latch main body 31a opened by 31h is closest to the tape surface of the fastener tape.

Furthermore, two grooves 31h are recessed toward the fastener tape 11 embedded in the plug 31 (in particular, the tape bending portion 11b ) on the cylinder pin-facing side of the plug body 31a. In addition, in the present invention, the number of grooves 31h formed on the pin-facing side of the plug body 31a is not particularly limited, and any number of grooves 31h can be formed according to the size or design of the plug 31 .

Each groove part 31h in this Example 1 is formed along the tape front and back direction. In addition, the groove portion 31h is opened on the upper surface (surface) side of the plug main body 31a, and is continuously formed in a fixed cross-sectional shape from the height position of the upper surface of the plug main body 31a in the front and back direction of the tape at least until it is arranged. The height position of the tape area of the fastener tape 11 inserted into the latch 31 (see FIGS. 7 and 8 ).

Specifically, the groove portion 31h of the first embodiment is a height position from the upper surface of the latch main body 31a along the front and back direction of the tape, and exceeds the cloth of the fastener tape 11 closest to the upper surface of the latch main body 31a. The height position of the tape surface is continuously formed up to the height position of the element attaching portion 11c of the fastener tape 11 .

That is to say, the groove portion 31h of the first embodiment is a cavity surface on which the cylinder pin is formed facing the side in the injection molding die of the pin 31 as described in detail below, and the restricting fastener tape is provided at a specific length. The tape position restricting protrusion 46 at the position of 11, when the plug 31 is injection-molded, the tape position restricting protrusion 46 presses the zipper tape 11 stably, and finally has a Formed to a specific size.

Since the groove portion 31h having a specific size in the front and back direction of the tape is formed on the side facing the pin of the pin 31 in this way, a part of the fastener tape 11 can finally be separated from the pin pair of the pin 31 as described below. It is difficult to produce sideways exposed or protruding defects.

In this case, the groove portion 31h formed on the pin 31 preferably has a groove extending from the cylinder pin-facing side of the pin 31 to a position corresponding to the surface (outer peripheral surface) of the tape bending portion 11b of the fastener tape 11. deep.

Moreover, among the two groove parts 31h, the groove part 31h formed in the rear side is arrange|positioned near the tape rear end edge in the tape bending part 11b of the fastener tape 11. As shown in FIG. Furthermore, the groove portion 31h on the rear side is a tape that is relatively overlapped (or included) in the recessed portion 31g in the tape width direction by a part of the formation area of the groove portion 31h in the tape length direction. The form of the formation region in the longitudinal direction is arranged so as to line up in the tape width direction of the fastener tape 11 with respect to the recessed portion 31g.

In addition, in the present invention, the groove portion 31h on the rear side is a part of the formation region in the tape longitudinal direction of the groove portion 31h, and may relatively not overlap with the formation region in the tape longitudinal direction of the recessed portion 31g. , and is disposed close to the front side of the formation region in the tape longitudinal direction of the recessed portion 31g.

The element engaging portion 31b in the plug 31 of the first embodiment is disposed on the side of the element row 12 facing the cylinder pin in the plug body 31a and on the lower side (back side) of the plug body 31a. In addition, the element engagement portion 31b protrudes obliquely upward from the cylinder pin-facing side of the plug main body 31a, and the maximum dimension in the front-rear direction of the element engagement portion 31b is set to be 2 times the gap between the fastener elements 13. more than double. Such an element engaging portion 31b is engaged with the fastener element 13 on the rearmost end side (cylinder pin 32 side) of the element row 12 arranged on the right side when the left and right element rows 12 are meshed.

In the plug 31 in the first embodiment, the plug-in part 31c arranged on the lower surface side and the detachable part 31d arranged on the upper surface side are spaced apart from each other at a predetermined interval from the side of the plug main body 31a toward the rear end, toward the fastener tape. The side of the tape main body part 11a of 11 is slightly inclined and arrange|positioned. In this case, the space formed between the insertion/extraction part 31c and the detachment part 31d is set so that the upper wall part of the tail piece 33 mentioned later can enter. In addition, the cross-section of the plug-in portion 31c has a nearly square shape, and the cross-section of the detachable portion 31d has a flat rectangular shape.

The side wall portion 31e connecting the insertion portion 31c and the detachment portion 31d is integrally formed over the cylinder pin-facing side edges of the insertion portion 31c and the detachment portion 31d. In addition, the cylinder-pin-facing side of the side wall portion 31e is formed on the same surface as the cylinder-pin-facing side of the insertion/extraction portion 31c and the cylinder-pin-facing side of the detachment portion 31d. Furthermore, the dimension (width dimension) of the lateral direction of the side wall part 31e is set to the specific size which can ensure the required strength and can be inserted into the below-mentioned notch part 33d of the tailpiece 33.

Furthermore, the plug 31 and the left side reinforcing part 34 of the first embodiment described above can use an injection mold including the first mold (fixed mold) 41 shown in FIG. 9 and the second mold (movable mold) not shown in the figure. Molding is used for molding. Inside the mold for injection molding, there are provided a cavity space 42 corresponding to the shape of the plug 31 and the left side reinforcement 34, a runner 43 that becomes a path for the melted thermoplastic resin (molten resin), and a channel for allowing the molten resin to pass through. It flows from the runner 43 to the gate 44 of the mold cavity space 42 .

In this case, the first mold 41 is provided with two tape position regulating protrusions 46 protruding from the flat cavity surface 45 formed on the side end surface facing the barrel pin of the plug 31 toward the cavity space 42 , and A tape holding portion 47 that presses the tape outer peripheral surface of the zipper tape 11 when the zipper tape 11 is held between the first die 41 and the second die is provided.

When using such an injection mold including the first mold 41 and the second mold to perform injection molding of the plug 31 and the left side reinforcing portion 34, first, the left side is placed between the first mold 41 and the second mold. The side fastener stringer 10a is mold-locked. Thereby, the fastener tape 11 of the left side fastener stringer 10a is sandwiched between the 1st mold 41 and the 2nd mold.

In addition, at this time, since the tape holding portion 47 is provided on the first mold 41 as described above, the outer peripheral surface of the fastener tape 11 can be pressed by the tape holding portion 47, thereby suppressing the ejection of the fastener tape. When forming, the zipper tape 11 shakes in the mold cavity space 42 . In addition, since the two tape position regulating protrusions 46 are provided on the first die 41 as described above, these tape position regulating protrusions 46 can restrain the fastener cloth while being in contact with the tape side edge of the fastener tape 11 . The position of the tape 11 can thus be maintained in a state where the fastener tape 11 is spaced apart from the flat cavity surface 45 in the mold that forms the cylinder pin facing side end surface of the pin 31 as shown in FIG. 9 .

After the first mold 41 and the second mold are clamped, the two grooves 31h shown in FIG. The pin 31 with a specific shape and the left reinforcement part 34 provided on the side facing the barrel pin are stably integrally formed on the rear end of the left fastener stringer 10a.

Especially in this first embodiment, since the first mold 41 is provided with the tape position regulating protrusion 46 as described above, the position of the fastener tape 11 can be restricted by the tape position regulating protrusion 46 Injection molding is performed from below, thereby making it difficult for a part of the fastener tape 11 to be exposed or protrude to the side from the cylinder pin pair of the formed plug 31 .

Next, the barrel pin 32 of the first embodiment is fixed to the rear end of the zipper tape 11 in such a way that it is continuously arranged on the element row 12 of the right zipper string 10b, and simulates the substantially U-shaped shape of the zipper tape 11. Shaped tape bending portion 11b has a substantially U-shaped or substantially J-shaped cross section. In addition, the cylinder pin 32 is fixed to a part of the outer peripheral surface side and the inner peripheral surface side of the fastener tape 11 , and a part of the rear end portion of the fastener tape 11 is inserted (embedded) in the cylinder pin 32 .

A concave or groove-shaped recessed portion 32a is provided on the upper surface side of the cylindrical pin 32, and this recessed portion 32a passes through the tape of the injection mold provided on the cylindrical pin 32 similarly to the recessed portion 31g formed in the plug body 31a. The pressing portion presses the fastener tape 11 and at the same time performs injection molding of the barrel pin 32 to form a tape pressing track portion.

In this case, the recessed portion 32a is opened on the upper surface of the cylinder pin 32, and is recessed to the position of the tape surface of the zipper tape 11 embedded in the cylinder pin 32, and the bottom of the recessed portion 32a includes the fastener tape. . In addition, in the case of the first embodiment, the recessed portion 32a formed in the cylinder pin 32 and the recessed portion 31g formed in the plug main body 31a have bilaterally symmetrical shapes.

In addition, on the pin-facing side of the barrel pin 32 , a groove portion 32 b is recessed toward the zipper tape 11 (especially the tape bending portion 11 b ) inside the barrel pin 32 . In addition, in this invention, the number of objects of the groove part 32b formed in the cylinder pin 32 can be changed arbitrarily. In addition, on the front side (the side of the element line 12 ) of the groove portion 32 b of the cylinder pin 32 , there is provided a spacer for avoiding interference with the element engagement portion 31 b of the plug 31 when the left and right element lines 12 are meshed. The step portion 32c.

The groove part 32b of the cylinder pin 32 in this Example 1 is formed along the tape front and back direction. In addition, the groove portion 32b is opened on the upper surface side of the cylinder pin 32, and is continuously formed with a constant cross-sectional shape from the height position of the upper surface of the cylinder pin 32 in the front and back direction of the tape to at least the position where the groove is inserted. The height position of the tape area of the zipper tape 11 inside the cylinder pin 32.

Specifically, the groove portion 32b of the cylinder pin 32 is a height position from the upper surface of the cylinder pin 32 that exceeds the tape of the zipper tape 11 closest to the upper surface of the cylinder pin 32 along the front and back direction of the tape. The height position of the element attachment part 11c of the fastener tape 11 is formed to the height position of the surface. Thereby, similarly to the case of the groove portion 31g formed in the pin 31, it is possible to make it difficult for a part of the fastener tape 11 to be exposed or protrude sideways from the pin facing side of the cylinder pin 32.

In this case, the groove portion 32b formed on the cylinder pin 32 preferably has a groove from the latch-facing side of the cylinder pin 32 to a position corresponding to the surface (outer peripheral surface) of the tape bending portion 11b of the fastener tape 11. The groove is deep.

Moreover, the groove part 32b is arrange|positioned in the tape rear edge vicinity in the tape bending part 11b of the fastener tape 11. As shown in FIG. Furthermore, the groove portion 32b is a part of the formation area of the groove portion 32b in the tape length direction in the tape width direction, which is relatively overlapped (or included) in the tape length direction of the recessed portion 32a. The form of the area is provided so that it may line up in the tape width direction of the fastener tape 11 with respect to the recessed part 32a.

In addition, in the present invention, the groove portion 32b of the barrel pin 32 is a part of the formation area of the groove portion 32b in the tape length direction, and may be arranged in a tape that is not in contact with the recessed portion 32a in the tape width direction. The formation area of the longitudinal direction overlaps, and the position which approaches the front side of the formation area of the tape longitudinal direction of the recessed part 32a.

The open tail cylinder 33 of the present embodiment 1 is a box-shaped part integrally formed on the rear end of the cylinder pin 32, and includes a right half 33a formed to protrude from the cylinder pin 32 to the rear, and a right half 33a facing from the right half 33a. The left half part 33b protruding from the side of the plug 31 in the tape width direction, and the left half part 33b of the open tail tube 33 is formed with a plug accommodating part 33c which opens on the front side and can insert the plug 31 into the inside for storage.

Between the upper wall portion arranged on the upper surface side and the side surface (opposing side surface) of the right half portion 33a on the side opposite to the latch 31, among the wall portions constituting the latch receiving portion 33c, there is formed a movable wall in the front-rear direction. The notch part 33d has a width dimension (that is, a width dimension larger than the width dimension of the side wall part 31e) into which the side wall part 31e of the plug 31 is inserted. The notch portion 33d is opened at the front, and the rear end position of the notch portion 33d is set at the same position as the rear end position of the plug accommodating portion 33c.

Furthermore, on the upper surface side of the upper wall part arranged on the left half part 33b, a disengaged part 33e for disengaging and disengaging the above-mentioned disengaging part 31d of the plug 31 is protruded. The detachable part 33e of the open-tail cylinder 33 includes: a convex horizontal frame part 33f extending in the left-right direction and abutting against the top end of the detachable part 31d of the latch 31; and a convex vertical frame part 33g, It extends forward from the end portion of the horizontal frame portion 33f on the side opposite to the latch, obliquely toward the right half portion 33a, and is formed in a hook shape in plan view. In addition, the tip end (tip end) of the vertical frame portion 33g of the detachable portion 33e is formed in a pointed shape that tapers toward the tip, and can be inserted into the cutout portion 31f of the plug main body 31a.

In addition, the cylinder pin 32 and the open tail cylinder 33 are provided with a right side reinforcing part 35 extending to the side of the tape body part 11a and fixed to the zipper tape 11 in a horizontal lattice shape, and the right reinforcing part 35 is used to clamp the zipper. The tape main body part 11a of the tape 11 is fixed to the outer peripheral surface side and the inner peripheral surface side of the tape main body part 11a. The rear end portion of the fastener tape 11 is appropriately protected by the provision of the right side reinforcement portion 35 , thereby improving the durability of the fastener tape 11 .

Furthermore, the cylinder pin 32, the tail cylinder 33, and the right reinforcement part 35 of the first embodiment described above can be used including the first die (fixed die) 51 shown in FIG. 10 and the second die not shown in the figure. (Moveable mold) Injection molding is molded with a mold. Inside the mold for injection molding, a cavity space 52 corresponding to the shapes of the barrel pin 32, the open end barrel 33, and the right side reinforcement portion 35, and a flow channel serving as a passage for the melted thermoplastic resin (molten resin) are provided. The channel 53 and the gate 54 for the molten resin to flow from the channel 53 into the cavity space 52 .

In this case, the first mold 51 is provided with a tape position regulating protrusion 56 protruding from the flat cavity surface 55 forming the plug-facing side end surface of the cylinder pin 32 toward the cavity space 52 , and the When the fastener tape 11 is clamped between the first mold 51 and the second mold, the tape pressing portion 57 presses the tape outer peripheral surface of the fastener tape 11 .

When performing injection molding of the barrel pin 32, the tail barrel 33, and the right reinforcement portion 35 using such an injection molding die, first, the right side fastener stringer is placed between the first die 51 and the second die. 10b performs mode locking. Thereby, the fastener tape 11 of this fastener stringer is clamped between the 1st mold 51 and the 2nd mold.

At this time, since the tape holding portion 57 is provided on the first die 51 as described above, the outer peripheral surface of the fastener tape 11 can be pressed by the tape holding portion 57, thereby suppressing the opening of the fastener tape 11 during injection molding. Cloth tape 11 rocks. In addition, since the first mold 51 is provided with the tape position regulating protrusion 56 as described above, the tape position regulating protrusion 56 is in contact with the tape side edge of the fastener tape 11 to regulate the movement of the fastener tape 11 . Therefore, as shown in FIG. 10 , the fastener tape 11 can be held in a state spaced apart from the flat cavity surface 55 in the mold that forms the plug-facing side end surface of the cylinder pin 32 .

After the first mold 51 and the second mold are clamped, by injecting molten resin into the mold cavity space 52 of the mold through the runner 53 and the gate 54, as shown in FIG. A cylinder pin 32 having a specific shape provided with a recessed portion 32b, an open tail cylinder 33, and a right side reinforcing portion 35 are stably integrally formed on the rear end portion of the right side fastener stringer 10b.

In particular, in the first embodiment, the first mold 51 is provided with the tape position regulating protrusion 56 as described above, so the position of the fastener tape 11 can be restricted by the tape position regulating protrusion 56 . Injection molding is performed, thereby making it less likely that a part of the fastener tape 11 is exposed or protrudes sideways from the pin pair of the formed cylinder pin 32 .

Next, with regard to the slide fastener 1 including the separable insert 30 of the present embodiment 1 having the above-mentioned structure, for the state where the left and right fastener stringers 10a, 10b are separated from each other, the left and right fastener element rows 12 are meshed. The operation when the zipper 1 is closed will be described.

First, the slider 20 is slid toward the tail opening barrel 33 along the element row 12 formed on the right side fastener stringer 10b, the barrel pin 32 is inserted into the element guide path from the engaging opening of the slider 20, and the puller is pulled. The end portion (rear end portion) of the head 20 on the side of the meshing port abuts against the open-tail cylinder 33 . Accordingly, the slider 20 is held at a position where sliding of the rear end side is restricted.

Next, by inserting the pin 31 disposed on the left side fastener stringer 10a as shown in FIG. As shown, the plug-in portion 31c of the plug 31 is inserted into the plug receiving portion 33c of the tail opening cylinder 33 , and the detachable portion 31d of the plug 31 is fastened to the detachable portion 33e of the tail opening cylinder 33 . Thereby, with respect to the cylinder pin 32 and the tail cylinder 33, the plug pin 31 can be set to the state which can start the meshing of the element row 12 stably.

Then, by sliding the slider 20 forward as the element meshing direction, the left and right element rows 12 are meshed sequentially from the rear end side, and the slide fastener 1 can be easily closed.

On the other hand, in the slide fastener 1 including the separable insert 30 according to the first embodiment, when the left and right fastener stringers 10a, 10b are separated from the state where the left and right element rows 12 are meshed, First, the slider 20 is slid toward the opening cylinder 33 along the sprocket row 12, and the meshing of the left and right sprocket rows 12 is released, and then the rear end of the slider 20 is abutted against the opening cylinder 33 (see FIG. 12).

Then, by making the latch 31 move to the front side in the manner of lifting, the detachable part 31d of the latch 31 is disengaged from the detached part 33e of the tail opening cylinder 33, and the insertion part 31c of the latch 31 is removed from the tail. The plug 31 is pulled out from the plug accommodating part 33 c of the cylinder 33 , and the plug 31 is pulled out through the element guide path of the slider 20 . Thereby, the left side and the right side fastener stringers 10a, 10b can be separated easily.

The zipper 1 including the detachable insert 30 of the first embodiment above can expose or protrude a part of the zipper tape 11 from the pin-facing side of the pin 31 or the pin-facing side of the pin 32 as described above. Defects such as slipping are less likely to occur, so it is a high-quality slide fastener with excellent appearance quality, excellent strength and durability of the latch pin 31 or barrel pin 32 , and also good operability of the separable insert 30 .

Example 2

Fig. 13 is a plan view partially showing a section of a slide fastener with a separable insert according to the second embodiment, and Fig. 14 is an enlarged cross-sectional view of main parts showing an enlarged section of the separable insert of the slide fastener.

The slide fastener 2 including the separable insert 80 of the present embodiment 2 is constituted as a general type slide fastener 2 . The zipper 2 includes: a pair of left and right zipper strips 60a, 60b, and a sprocket row 62 is formed on the side edges of the left and right zipper tapes 61; Slidably arranged; the stopper 65 is disposed adjacent to the front end side of the sprocket row 62, and prevents the slider 70 from falling off; and the detachable insert 80 is adjacent to the rear end side of the sprocket row 62. Neighborhood configuration.

In the left and right fastener stringers 60a and 60b in the second embodiment, a plurality of individual fastener elements 63 made of synthetic resin are arranged at specific intervals on the tape side edge of the fastener tape 61 to form a chain. Gear row 62. Moreover, thermoplastic resins, such as polyamide, polyacetal, polypropylene, and polybutylene terephthalate, are selected as synthetic resin used for the fastener element 63, for example.

In this case, the fastener tape 61 includes a tape main body portion and an element attachment portion in the tape width direction, and a core string portion 61a is provided along the tape side edges facing the left and right fastener tapes 61. . Each zipper element 63 includes: a main body fixed to the element mounting portion including the core rope portion 61a of the zipper tape 61; shape; and an elliptical engaging head further extended from the neck and swelled in the front-rear direction.

The slider 70 of the second embodiment includes a slider body 71 and a pull piece 73 . In addition, the slider main body 71 includes: an upper wing plate and a lower wing plate; a connecting column connecting the upper and lower wing plates; a flange portion arranged on the left and right side edges of the upper and lower wing plates; the upper surface of the upper wing, and hold the handle 73 in a rotatable manner. In addition, in the end portion of the slider main body 71 on the side where the coupling post is arranged, an introduction port is formed on the left and right, and an engagement port is formed in the end portion on the opposite side. In the slider main body 71, a substantially Y-shaped element guide path that communicates the right and left inlets and the meshing port is formed.

The detachable insert 80 of the second embodiment includes: a pin 81 disposed at the rear end of the left zipper string 60a; a cylinder pin 82 disposed at the rear end of the right zipper string 60b; and a tailpiece 83 , integrally formed on the rear end of the cylinder pin 82 . These plug pins 81, barrel pins 82, and tailpieces 83 are formed using thermoplastic resins such as polyamide, polyacetal, polypropylene, and polybutylene terephthalate.

The pin 81 of the second embodiment has a substantially prism-shaped form whose width dimension decreases slightly toward the rear end, and is fixed to the rear end of the fastener tape 61 so as to be continuously provided on the element row 62 of the left fastener stringer 60a. department. The tape side edge part including the core string part 61a in the rear end part of the fastener tape 61 is inserted (embedded) in this plug pin 81 .

In addition, at the front end portion of the plug pin 81 of the second embodiment, when the left and right fastener element rows 62 are meshed, the fastener chain arranged on the rearmost end side (the barrel pin 82 side) of the right fastener element row 62 is provided. The tooth 63 engages with the element engaging portion 81b.

Furthermore, two recessed grooves 81h are recessed toward the fastener tape 61 inserted into the plug 81 on the side facing the cylinder pin in the rear end portion of the plug 81 . In this case, each groove portion 81h is continuously formed in a constant cross-sectional shape along the front and back direction of the tape throughout the entire front and back direction of the plug 81 , and is formed on the upper surface (surface) side of the plug 81 and The opening on the lower surface (back side) penetrates through the plug 81 in the front and back direction.

The plug 81 in this second embodiment can be formed by using an injection molding die in which two tape position regulating protrusions are protruded from the flat cavity surface formed on the side end surface of the plug 81 facing the cylinder pin. The left side fastener stringer 60a is easily molded in the state where the position of the fastener tape 61 is regulated by the tape position regulating protrusion. Thus, in the injection-molded plug 81 of the second embodiment, the two grooves 81h as described above are formed at a predetermined distance from each other on the side facing the barrel pin of the plug 81, and are similar to the first embodiment described above. In the same way, it is less likely that a part of the fastener tape 61 is exposed or protrudes sideways from the barrel pin of the plug 81 .

On the other hand, the cylinder pin 82 of this Example 2 has a substantially prism shape, and is fixed to the rear end part of the fastener tape 61 so that it may be continuously provided in the element row 62 of the right fastener stringer 60b. The tail-opening barrel 83 of the second embodiment is a box-shaped component integrally formed at the rear end of the barrel pin 82, and includes: a right half 83a, extending from the barrel pin 82 to the rear, and fixed to the zipper tape 61; And the left half 83b protrudes in the tape width direction from the right half 83a toward the latch 81 side. Moreover, the plug accommodating part 83c which opens to the front side and can insert and accommodate the plug 81 inside is formed in the left half part 83b of the tail barrel 83. As shown in FIG.

As mentioned above, the zipper 2 with the detachable insert 80 including the pin 81, the cylinder pin 82, and the open tail cylinder 83 can be operated from the left and right zipper chains by performing the same operation as the conventional conventional type zipper. The left and right element rows 62 are meshed in the separated state to close the slide fastener 2 , and the left and right fastener stringers may be separated from the state where the left and right element rows 62 mesh.

The zipper 2 of the above present embodiment 2 including the common type separable insert 80 can make a part of the zipper tape 61 protrude or protrude from the cylinder pin of the plug 81 to the side, which is difficult to prevent, as described above. Therefore, the appearance quality is excellent, the strength and durability of the plug 81 are excellent, and the operability of the separable insert 80 is also excellent in high-quality slide fastener 2 .

Example 3

Fig. 15 is a plan view partially showing a slide fastener with a separable insert according to the third embodiment in section.

The slide fastener 3 including the separable insert 100 of the present Example 3 is a slide fastener called a double opening type (it may also be called a reverse opening type slide fastener) comprised including two sliders 90a and 90b.

The zipper 3 of the present embodiment 3 includes: a pair of left and right zipper tapes 60a, 60b, and a sprocket row 62 is formed on the tape side edges of the left and right zipper tapes 61; The sliders 90a, 90b are slidably arranged along the element row 62; the stopper (not shown) is arranged adjacent to the front end side of the element row 62, and prevents the first and second sliders 90a, 90b from and the detachable insert 100 is disposed adjacent to the rear end side of the chain element row 62 .

Here, the first slider 90a is a so-called slider for normal opening (sometimes referred to as an upper slider) arranged on the stopper side of the second slider 90b, and the second slider 90b is arranged on a side closer to the stop than the first slider 90b. The slider 90a is a so-called slider for reverse opening (it may also be called a pull-down head) on the side of the separable insert 100 .

The left side and right side fastener stringers 60a, 60b in this Example 3 are comprised substantially the same as the left side and right side fastener stringers 60a, 60b in Example 2 mentioned above. Therefore, in the slide fastener 3 of this Example 3, about the member which has the same structure as the member demonstrated in the said Example 2, it shows by using the same code|symbol, and the description is abbreviate|omitted.

The 1st and 2nd slider 90a, 90b of this Example 3 contain the slider main body 91 and the handle which is not shown in figure, respectively. Moreover, each slider main body 91 of the 1st and 2nd slider 90a, 90b includes: an upper wing and a lower wing; a connecting column that connects the upper and lower wings; and flanges provided on the left and right sides of the upper and lower wings. edge; and a pull-tab installation column, which is vertically arranged on the upper surface of the upper wing plate, and holds the pull-tab in a rotatable manner.

In addition, in the end portion of the slider body 91 on the side where the connecting column is arranged, an introduction port is formed on the left and right, and an engagement port is formed on the opposite end portion. A roughly Y-shaped sprocket guide path that communicates with the introduction port and the meshing port.

In the case of the third embodiment, the positions of the inlet ports formed on the left and right sides of the slider main body 91 are arranged in a mutually asymmetrical positional relationship. Furthermore, the 1st and 2nd slider 90a, 90b is inserted in the fastener element row 62 in the direction which mutually faces the meshing opening.

The detachable insert 100 of the present embodiment 3 includes: a pin 101 arranged at the rear end of the left side zipper string 60a and fixed and integrated on the zipper tape 61; and a pin 102 arranged at the right side of the zipper The rear end portion of the fastener tape 60b is fixed and integrated on the zipper tape 61 . These plug pins 101 and barrel pins 102 are formed using thermoplastic resins such as polyamide, polyacetal, polypropylene, and polybutylene terephthalate.

The pin 101 of the third embodiment has a substantially prismatic form, and includes: a pin main body 101a continuously provided on the element row 62 of the left fastener stringer 60a; (the sprocket row 62 side) protrudes in the tape width direction toward the cylinder pin 102 side; , engages with the fastener element 63 arranged on the rearmost end side (the barrel pin 102 side) of the element row 62 on the right side.

The plug main body 101 a of the plug 101 buries the tape side edge portion including the core string portion 61 a of the fastener tape 61 inside, and is formed so as to protrude rearward from the rear end edge of the fastener tape 61 . In addition, the side surface inside the tape of the plug main body 101a is linearly formed along the tape longitudinal direction. On the side facing the cylinder pin in the rear end portion of the plug main body 101a, three groove portions 101h are recessed toward the fastener tape 61 in the plug 101 at a predetermined distance from each other. In this case, each groove portion 101h is continuously formed in a constant cross-sectional shape along the front and back directions of the tape over the entire front and back direction of the plug 101 , and is formed on the upper surface (surface) side and the lower surface of the plug 101 . (back) side opening.

The plug 101 in this third embodiment can be injection molded by using three tape position regulating projections protruding from the flat cavity surface formed on the rear end portion of the plug main body 101a on the opposite side end surface of the cylinder pin. The left side fastener stringer tape 60a is easily molded in a state where the position of the fastener tape 61 is restricted by the tape position regulating protrusion using a die.

Thus, in the injection-molded plug 101 of the third embodiment, the three grooves 101h as described above are formed on the rear end portion of the plug main body 101a on the side facing the cylinder pin. In the same manner as in the case of the second embodiment, it is possible to make it less likely that a part of the fastener tape 61 is exposed or protrudes sideways from the cylinder pin pair of the plug 101 .

The cylinder pin 102 of the third embodiment includes: the cylinder pin main body 102a, which is continuously arranged on the element row 62 of the right side zipper string 60b, and is embedded with the tape side edge portion of the zipper tape 61 including the core rope portion 61a; The stop portion 102b is arranged at the rear end portion of the barrel pin main body 102a and protrudes toward the direction opposite to the side facing the bolt 101; and the inclined portion 102c is arranged at the front end portion of the barrel pin body 102a on the side facing the bolt. side, and is inclined such that the width dimension of the cylinder pin main body 102a gradually decreases toward the front.

Next, with regard to the slide fastener 3 with the separable insert 100 of the third embodiment having the above-mentioned structure, the left and right fastener element rows are separated from the state where the left and right fastener stringers 60a, 60b have been separated. 62 is engaged and the operation in the case of closing the slide fastener 3 will be described.

First, the first and second sliders 90a, 90b are slid toward the tail barrel 83 along the element row 62 formed on the right side fastener stringer 60b, and as shown in FIG. The inlet-side end of the flange is in contact with the stopper portion 102b of the cylinder pin 102, and the meshing-port side end of the first slider 90a is brought into contact with the meshing-port side end of the second slider 90b. Thereby, the 1st and 2nd slider 90a, 90b is hold|maintained in the position where the slide of a rear-end side is restricted, respectively.

Next, the pin 101 arranged on the left side fastener stringer 60a is inserted into the element guide path from the left inlet of the first slider 90a, and further, as shown in FIG. The protruding portion 101c approaches or abuts against the inclined portion 102c of the barrel pin 102 . Thereby, the plug pin 101 is set in the state which can start the meshing of the element line 62 stably with respect to the cylinder pin 102. As shown in FIG.

Then, by sliding the first slider 90a toward the front as the element meshing direction, the left and right element rows 62 are meshed sequentially from the rear end side, and the slide fastener 3 can be easily closed. Furthermore, the slide fastener 3 can be sequentially opened from the rear end side by sliding the 2nd slider 90b which abuts on the stopper part 102b of the cylinder pin 102 toward the front along the meshed element line 62 after that.

On the other hand, in the slide fastener 3 including the separable insert 100 according to the third embodiment, the left and right fastener stringers 60a, 60b are separated from each other in the state where the left and right element rows 62 are meshed. In this case, firstly, the first slider 90a is slid toward the second slider 90b along the sprocket row 62 to release the meshing of the left and right sprocket rows 62, and then, the end portion of the first slider 90a on the meshing opening side is It abuts against the meshing mouth side end part of the 2nd slider 90b (refer FIG. 15). Then, by moving the plug 101 to the front side so as to be pulled out, the plug 101 can be pulled out from the element guide paths of the first and second sliders 90a, 90b. Thereby, the left side and right side fastener stringers 60a, 60b can be separated easily.

The slide fastener 3 including the double-opening separable insert 100 of the third embodiment described above can make it difficult for a part of the slide fastener tape 61 to protrude or protrude to the side from the barrel pin of the plug 101 as described above. Therefore, it is a high-quality slide fastener 3 having excellent appearance quality, excellent strength and durability of the plug 101 , and good operability of the separable insert 100 .

[Symbol Description]

1, 2, 3 zippers

10a Left Zipper Strap (1st Zipper Strap)

10b Right side zipper strap (second zipper strap

11 Zipper tape

11a Tape body

11b Tape bending part

11c Chain tooth mounting part

12 sprocket rows

13 zipper teeth

13a Engaging head

14 core rope

20 sliders

21 slider body

21a Lower wing

21b Flange

21c guide post

22 stop claw body

23 pull tab

30 Detachable Inserts

31 latch

31a Latch body

31b Chain tooth engaging part

31c plug part

31d buckle part

31e side wall

31f Notch

31g depression

31h Groove

32 barrel pin

32a Recess

32b Groove

32c Step difference part

33 open tailpiece

33a right half

33b left half

33c Latches Containment

33d notch

33e Withheld part

33f Horizontal frame

33g vertical frame

34 Left reinforcement

35 Right reinforcement

41 The first mold (fixed mold)

42 cavity space

43 Runner

44 gate

45 cavity surface

46 Tape position restricting protrusion

47 Tape holding part

51 The first mold (fixed mold)

52 cavity space

53 Runner

54 gate

55 cavity surface

56 Tape position limiting protrusion

57 Tape holding part

60a left zip chain strap

60b right zip chain strap

61 Zipper tape

61a core rope part

62 sprocket row

63 zipper teeth

65 stop

70 slider

71 slider body

71a Tab Mounting Post

73 pull tab

80 Detachable Inserts

81 latch

81b Chain tooth engaging part

81h Groove

82 barrel pin

83 open tailpiece

83a right half

83b left half

83c Latches Containment

90a First slider

90b Second slider

91 slider body

100 detachable inserts

101 latch

101a Latch body

101b Chain tooth fastening part

101c Extension

101h groove part

102 barrel pin

102a Barrel pin body

102b stopper

102c Inclined part

Claims (6)

1. one kind carries the slide fastener (1,2,3) of detachable inlay (30,80,100), it is characterised in that includes：

First and second a pair of zip fastener (10a, 10b, 60a, 60b), in the opposite cloth of the zipper cloth belt (11,61) controlled Band side edge part forms chain tooth row (12,62)；Bolt (31,81,101) anchors at first zip fastener (10a, 60a) One end, and it is continuously disposed in the chain tooth row (12,62)；Cylinder pin (32,82,102), anchors at second zip fastener The one end of (10b, 60b), and it is continuously disposed in the chain tooth row (12,62)；And at least one pull head (20,70,90a, 90b), make the chain tooth row (12,62) engagement, the separation of left and right；And

The bolt (31,81,101) and the side end face of the cylinder pin (32,82,102) opposite direction and the cylinder pin (32, 82nd, 102) with the side end face of the bolt (31,81,101) opposite direction at least one, just carried on the back along strap direction it is recessed extremely A few concave part (31h, 32b, 81h, 101h),

The concave part (31h, 32b, 81h, 101h) is in the bolt (31,81,101) or the cylinder pin (32,82,102) Positive back of the body direction on the first surface that exposes or second surface split shed, and be at least continuously extended to being embedded in described insert It sells (31,81,101) or the positive of the zipper cloth belt (11,61) in the cylinder pin (32,82,102) carries on the back on direction and strap The corresponding height and position in position, and

The entire concave part (31h, 32b, 81h, 101h) is carried on the back on direction in the positive of the zipper cloth belt (11,61), along The positive back of the body direction of the zipper cloth belt is formed continuously to be open more than the concave part with the bolt or the cylinder pin The first surface or the immediate zipper cloth belt of the second surface cloth zone face positive back of the body direction on height position The height and position put.

2. the slide fastener according to claim 1 with detachable inlay, wherein

The zipper cloth belt (11) includes：Strap main part (11a)；Strap bending part (11b), from the strap main part One lateral margin of (11a) is extended towards strap width direction, and is bent in U-shaped manner along strap length direction；And sprocket peace Dress portion (11c) is further extended from the strap bending part (11b) towards strap width direction, and installs the sprocket It arranges (12,62)；And

The engageable head (13a) for forming the zipper sprocket (13) of the chain tooth row (12,62) is from the zipper cloth belt (11,61) The strap bending part (11b) project on the outside of strap and form in the lateral direction.

3. the slide fastener according to claim 1 with detachable inlay, wherein the concave part (31h, 32b, 81h) Be disposed on the strap ora terminalis of strap length direction in the inbuilt zipper cloth belt (11,61) nearby form.

4. the slide fastener according to claim 2 with detachable inlay, wherein the concave part (31h, 32b, 81h) Be disposed on the strap ora terminalis of strap length direction in the inbuilt zipper cloth belt (11,61) nearby form.

5. according to the slide fastener with detachable inlay of any one of claims 1 to 4, wherein

The first surface in recessed the bolt (31) of the concave part (31h, 32b) or the cylinder pin (32) or The second surface it is recessed recessed portion (31g, 32a), and

The bottom of the recessed portion (31g, 32a) includes and the concave part in the bolt (31) or the cylinder pin (32) The cloth zone face of the immediate zipper cloth belt (11) of the first surface or the second surface that (31h, 32b) is open, And

The concave part (31h, 32b) is with relative to strap of the recessed portion (31g, 32a) in the zipper cloth belt (11) The mode arranged in width direction is configured.

6. a kind of injection molding mold, it is characterised in that：It is according to any one of claim 1 to 5 for forming Slide fastener (1,2,3) with detachable inlay (30,80,100) the bolt (31,81,101) or cylinder pin (32,82, 102) injection molding, and the zipper cloth belt (11,61) is being clamped in state of the first mould (41,51) between the second mould The lower progress injection molding, and

At least one of first mould (41,51) and second mould are with strap position limitation protrusion (46,56), the strap Position limitation protrusion (46,56) be from by the cylinder pin opposite direction side end face of the bolt (31,81,101) or the cylinder pin (32, 82nd, 102) the flat die cavity face (45,55) of bolt oncoming lane end face forming is prominent towards die cavity space (42,52), and with The strap lateral margin of the zipper cloth belt (11,61) connects and limits the position of the zipper cloth belt (11,61).