WO2014184851A1 - Slide fastener - Google Patents

Abstract

This slide fastener (1, 2) has a stop (30, 70) against which the back opening end of a slider (20, 60) abuts. The end of the stop (30, 70) that abuts against the slider (20, 60) has a rotation-promoting section for promoting the rotation of the slider (20, 60) in a specified direction when the left or right fastener stringer (10, 50) is subjected to a transverse pulling force. Smooth sliding operation of the slider (20, 60) can thereby be stably secured because it is more difficult for the fastener elements (12, 52) to be snagged on the outer wall side of the flange sections (25a, 25b, 65a, 65b) of the slider (20, 60).

Description

Slide fastener

The present invention relates to a slide fastener in which a plurality of fastener elements are arranged in rows on a tape side edge of a fastener tape, and in particular, a fastener is fixed to left and right fastener stringers so as to be continuous with one end of left and right element rows. It relates to slide fasteners.

Generally, a slide fastener is slidable between a pair of left and right fastener stringers in which an element row is formed along the tape length direction at opposite tape side edges of a pair of left and right fastener tapes, and a left and right element row. A first stopper (sometimes referred to as a lower stopper) that is attached to the left and right fastener stringers continuously to one end of the left and right element rows and contacts the rear opening side end of the slider. ), And a second stopper (sometimes referred to as an upper stopper) that is separately fixed to the left and right fastener stringers at the other ends of the left and right element rows and abuts the end portion on the shoulder side of the slider. ing.

The left and right fastener stringers have a belt-like fastener tape having a tape main portion and a tape side edge (element attachment portion), and a plurality of fastener elements attached to the tape side edge of the fastener tape. Each element string of the left and right fastener stringers is formed by a plurality of fastener elements attached to each fastener tape.

In this case, the fastener elements are attached to the fastener tape at a predetermined attachment pitch. Also, the left and right fastener stringers are positioned relative to the length of the tape at a position half the mounting pitch (ie half the pitch) relative to the fastener element in the other fastener stringer. It is combined with a shift.

Also, as one form of the fastener element, a fastener element formed by injection molding a synthetic resin on a fastener tape is known. The fastener element formed by this injection molding has a barrel portion that is fixed to the fastener tape, and a shape that extends from the barrel portion to the outside of the tape and is narrowed so as to narrow the dimension in the tape length direction (element width). And a meshing head that protrudes from the neck and has an oval shape.

The slider can be rotated by a slider fuselage with a substantially Y-shaped element guide path between the upper and lower blades connected at the shoulder end by a guide column, and a puller mounting column arranged on the upper blade of the slider fuselage. And a handle to be held by the. The slider body has left and right flange portions symmetrically formed along the left and right side edge portions of the upper and lower blades. By sliding such a slider along the element row, the left and right element rows can be engaged, and the engagement of the element rows can be released.

Further, in order to define the sliding range of such a slider and prevent the slider from falling off the element row, as described above, the first fixed to the one end (rear end) side of the left and right fastener stringers. One stop and a second stop fixed to the other end (front end) side are arranged so as to be connected to the element row.

Regarding such a slide fastener, for example, Japanese Utility Model Publication No. 56-37605 (Patent Document 1) considers the relative relationship among a fastener element, a slider, and a first stopper (lower stopper), and a slider. There is disclosed a slide fastener that prevents the tear strength of the slide fastener from being lowered when the right and left fastener stringers receive a lateral pulling force in a direction in which the left and right fastener stringers are separated from each other in a state where the first fastener is in contact with the first fastener.

As shown in FIG. 11, the slide fastener 80 described in Patent Document 1 includes left and right fastener stringers 81 each having a plurality of fastener elements 82 attached to a fastener tape 83 at a predetermined mounting pitch, and left and right fastener stringers 81. The slider 90 slides along the element string of the fastener stringer 81, and the first stopper 100 fixed to one end of the left and right fastener stringer 81 across the left and right element strings.

In the following description, the front-rear direction refers to the length direction of the fastener tape 83, and in particular, the direction in which the slider 90 slides so as to close the slide fastener 80 by engaging the left and right element rows is defined as the front. The direction in which the slider 90 is slid so as to open the slide fastener 80 by separating the left and right fastener elements 82 is the rear.

The left-right direction refers to the tape width direction of the fastener tape 83, which is parallel to the tape surface of the fastener tape 83 and orthogonal to the tape length direction. The vertical direction refers to the tape front and back direction of the fastener tape 83. In particular, the direction on the side where the slider 90 is provided with respect to the fastener tape 83 is the upper direction, and the opposite direction is the lower direction. .

The first stopper 100 in Patent Document 1 includes a base portion 101 that abuts a rear opening side end portion of the slider 90, and an insertion portion that is arranged via a step at an element row side end portion (front end portion) of the base portion 101. 102. The fitting portion 102 of the first stopper 100 is formed integrally with the fastener element 82. Further, when the slider 90 is brought into contact with the base 101 of the first stopper 100, the insertion portion 102 is inserted into the element guide path of the slider 90 so that the slider 90 has a tape length. It prevents tilting clockwise or counterclockwise with respect to the direction.

The slider body 91 of the slider 90 in Patent Document 1 includes a vertical blade 92, a guide column 93 that connects one end of the vertical blade 92, and a left and right edge disposed along the left and right edges of the vertical blade 92. Flange portions 94a and 94b. In addition, between the upper and lower wing plates 92, a substantially Y-shaped element guide that communicates two shoulder openings formed on the left and right sides of the guide pillar 93 and a rear opening formed on the other end side of the upper and lower wing plates 92. A road is formed.

Further, in the slider 90 of Patent Document 1, the left and right flange portions 94a and 94b are formed asymmetrically with the positions of the shoulder edge sides of the flange portions 94a and 94b in the tape length direction being different from each other. Yes. For example, in the case of the slider 90 shown in FIG. 9, although the positions in the tape length direction of the rear edge of the left and right flange portions 94a and 94b are set to substantially the same position, the shoulder side of the left flange portion 94a. The position of the end edge (front end edge) is set on the front side so as to be farther from the rear opening than the position of the shoulder side edge (front end edge) of the right flange part 94b, and the length of the left flange part 94a (Dimensions along the left and right edges of the upper and lower blades 92) are longer than the length of the right flange portion 94b.

In particular, in Patent Document 1, the length of the left flange portion 94a is the longest of the left flange portion 94a and the left flange portion 94a in the state where the slider 90 is in contact with the base portion 101 of the first stopper 100. The contact area with the fastener element 82a (hereinafter referred to as the shoulder opening side element) that contacts the shoulder end (front end) is at least half of the length of the body of the fastener element 82 in the tape length direction. Is set.

Further, the length of the right flange portion 94b is such that the end of the right flange portion 94b and the end of the right flange portion 94b on the most shoulder side in a state where the slider 90 is in contact with the base portion 101 of the first stopper 100. The contact area with the fastener element (shoulder side element) 82a that contacts the portion (front end portion) is set to be at least half the dimension in the tape length direction of the body portion of the fastener element 82.

That is, the left and right fastener elements 82 are usually attached to the fastener tapes 83 with the positions in the tape length direction being relatively shifted from each other by a half pitch as described above. By changing the lengths of the left flange portion 94a and the right flange portion 94b, the left and right flange portions 94a, 94b are tape lengths in the body portion of the fastener element 82 with respect to the respective shoulder opening side elements 82a. It is possible to make contact in a region that is more than half of the dimension in the direction.

Here, for example, a case of a slide fastener having a general slider in which the left and right flange portions have the same length and are symmetrically arranged with each other will be described. In the slider in which the left and right flange portions have the same length, when the slider is in contact with the base portion of the first fastener, one of the left and right flange portions has a contact area with the shoulder side element, and The shoulder portion side edge of the flange portion is aligned with the shoulder portion side element so as to have the same size as the dimension in the tape length direction in the body portion. In this case, the other flange portion of the slider has a contact area with the shoulder side element due to a difference in relative position in the tape length direction between the left and right fastener elements, and the tape length direction in the body portion of the fastener element. It arrange | positions so that it may become less than half of the dimension.

In such a state that the slider is in contact with the first stopper, when the left and right fastener stringers receive a lateral pulling force in a direction away from each other, the contact area with the flange portion is the dimension in the tape length direction in the body portion. The shoulder side element that is less than half of the slider moves by sliding to the shoulder side along the flange portion with respect to the slider due to the action of the lateral pulling force, and the pitch on the meshing head side opens to the shoulder side element. A force in the direction of rotation is applied.

As a result, the shoulder side element easily jumps out of the slider element guide path beyond the shoulder edge of the flange part to the outside of the slider, and the shoulder side element that protrudes to the outside is on the outer wall side of the flange part. It may become easy to get caught in.

When the shoulder side element is caught on the outer wall side of the flange portion in this way, the movement of the slider is inhibited by the shoulder side element, and the slider cannot be smoothly slid in the meshing direction of the element row. Furthermore, in this case, the user of the slide fastener may forcibly pull the handle in order to slide the slider, so that the slider may come off from the element row and fall off, making it impossible to close the slide fastener. There is a risk that the slider, the fastener element, and the fastener tape may be damaged due to excessive force.

On the other hand, in Patent Document 1, as described above, the lengths of the left and right flange portions 94a and 94b in the slider 90 are made different from each other, and the left and right flange portions 94a and 94b are respectively connected to the shoulder-mouth side elements 82a. On the other hand, the slider 90 is configured so as to be brought into contact with a region of more than half of the dimension in the tape length direction in the body portion of the fastener element 82.

For this reason, even if the left and right fastener stringers 81 receive a lateral pulling force in a state where the slider 90 of Patent Document 1 is in contact with the base portion 101 of the first stopper 100, the left and right flange portions 94a and 94b The state where 82a is in contact is stably maintained, and it is difficult for the shoulder-side element 82a to jump out from the inside of the element guide path of the slider 90 beyond the shoulder-edge side edges of the flange portions 94a and 94b. be able to.

Therefore, in the slide fastener 80 of Patent Document 1, the strength (tear strength) against the lateral pulling force in the state in which the slide fastener 80 is opened is increased, and the shoulder side element that has been a problem with the slide fastener 80 until then is used. It is possible to make it difficult for problems caused by the hook 82a to be caught on the outer wall side of the flange portions 94a and 94b.

By the way, as a kind of slide fastener, it is conventionally used for an opening / closing part or an opening part of a fastener-attached product such as a wet suit or a waist boot, and a liquid such as water enters inside when the opening / closing part or the opening part is closed. There is known a slide fastener (hereinafter referred to as a waterproof slide fastener) having a waterproof property (waterproof structure) for preventing this.

A waterproof slide fastener usually includes a pair of left and right fastener stringers in which an element row is formed on the side edge of a waterproof tape having a waterproof layer made of a synthetic resin, and a slider that can slide along the element row. Have. In such a waterproof slide fastener, the right and left waterproof tapes are brought into close contact with each other by engaging the left and right element rows, so that water is taped from the tape surface side between the left and right waterproof tapes. Intrusion to the back side (or from the tape back side to the tape front side) is prevented.

Further, in the waterproof slide fastener, the first and second stoppers are often arranged at one end and the other end of the element row, respectively, and the slider slides by these first and second stops. The range is regulated.

An example of such a waterproof slide fastener is disclosed in, for example, International Publication No. 2011/077750 (Patent Document 2).
The waterproof slide fastener described in Patent Document 2 is characterized by a first stopper with which the rear end of the slider abuts.

Specifically, the first fastener in Patent Document 2 is fixed to the left and right waterproof tapes across the left and right element rows by injection molding synthetic resin. In addition, the first stopper is connected to the body of the fastener element (hereinafter referred to as the rearmost element) arranged on the most first fastener side among the fastener elements forming the left and right element rows, The slider abutting end (front end) of the first stopper is directed rearward to a position facing the meshing head of the last element so that the meshing head of the last element is exposed to the outside. A recessed portion is provided.

By forming such a recess in the first stopper, the meshing head of the rearmost element is accommodated in the recess, and the opposite end surfaces of the left and right fastener tapes are in pressure contact with each other in the recess. Can be exposed.

According to Patent Document 2, the first slide fastener of the waterproof slide fastener is configured as described above, so that the waterproofness around the first fastener having weak adhesion between the fastener tapes can be improved. In addition, the molten resin is prevented from flowing into unnecessary portions at the time of injection molding of the first fastener, and the manufacture of the slide fastener is easy.

Moreover, in this patent document 2, the waterproof slide fastener from which the form of a 1st fastener differs is described as a modification.
The first stopper of the waterproof slide fastener according to the modification of Patent Document 2 is fixed to the left and right waterproof tapes across the left and right element rows by injection molding synthetic resin. Further, the slider abutting end portion (front end portion) of the first stopper is provided with a recessed portion that is recessed rearward at a position facing the meshing head of the rearmost element. A first projecting portion and a second projecting portion projecting forward are arranged on the left and right sides of the front end portion across the recess.

In this case, the first protrusion of the first stopper is connected to the last element so as to cover a part of the surface of the last element. Moreover, the 2nd protrusion part protrudes longer than the 1st protrusion part and is formed so that it may connect with the other party fastener element which meshes with a rearmost end element.

Even with the waterproof slide fastener according to such a modification, the above-described effects can be obtained. In the waterproof slide fastener according to the modified example of Patent Document 2, as described above, the protruding length of the first protruding portion and the protruding length of the second protruding portion of the first stopper are different from each other, but the protruding lengths of the first protruding portions are different. There is no specific description about the size of the tape, the separation distance in the tape length direction between the front end face of the first protrusion and the front end face of the second protrusion.

Also, in Patent Document 2, when the left and right fastener stringers receive a lateral pulling force with the slider in contact with the first stopper as discussed in Patent Document 1, one fastener stringer No consideration is given to the problem that the shoulder-side element in the above-mentioned element protrudes outward from the element guide path of the slider and is easily caught on the outer wall side of the flange portion.

Japanese Utility Model Publication No. 56-37605 International Publication No. 2011/077750 Pamphlet

In the slide fastener 80 described in Patent Document 1, as described above, the slider 90 is brought into contact with the first stopper 100 by changing the length of the left flange portion 94a and the right flange portion 94b of the slider 90. When the left and right fastener stringers 81 receive a lateral pulling force in contact with each other, the shoulder opening side element 82a of one fastener stringer 81 is difficult to jump out of the element guide path of the slider 90 to the outside.

However, the slider 90 having different lengths of the left and right flange portions 94a and 94b as in Patent Document 1 corresponds to the slide fasteners having different specifications such as the size of the fastener elements, and is corresponding to the fastener elements of the respective slide fasteners. It is necessary to design and manufacture a dedicated slider with appropriate lengths for each flange. As a result, the versatility of the slider is reduced, and the production cost of the slide fastener is increased. For this reason, it has been desired to develop a slide fastener that can use a slider in which left and right flange portions that are generally used in the past are arranged symmetrically and that can obtain the same effect as Patent Document 1. .

On the other hand, in a waterproof slide fastener as described in Patent Document 2, a plurality of synthetic resin fastener elements are injection-molded on a waterproof tape in which a synthetic resin waterproof layer is formed on the front and back surfaces of the tape. A fastener stringer is configured.

In addition, the waterproof layer formed on the waterproof tape often has elasticity to ensure the flexibility of the fastener tape. For this reason, each fastener element fixed to the waterproof tape may be slightly displaced when, for example, a single fastener element receives a strong external force locally.

Therefore, for example, in a waterproof slide fastener having sliders with the same length of the left and right flange portions, when the left and right fastener stringers receive a lateral pulling force with the slider in contact with the first stopper, one fastener stringer Since the contact area between the shoulder-side element disposed on the flange and the flange portion is more than half of the dimension in the tape length direction of the body portion of the fastener element, the shoulder-side element jumps out from the element guide path of the slider. This can be prevented.

However, the shoulder side element arranged on the other fastener stringer has a contact area with the flange portion that is less than half of the dimension in the tape length direction of the body portion of the fastener element. Moreover, the shoulder side element receives a strong external force locally from the flange portion, and the relative position with respect to the fastener tape is easily displaced.

As a result, in the waterproof slide fastener, the shoulder side element arranged on the other fastener stringer moves while sliding toward the shoulder side along the flange portion with respect to the slider, and the outside from the inside of the slider element guide path. It becomes easier to jump out. For this reason, as described above, the shoulder side element is likely to be caught on the outer wall side of the flange portion to prevent the slider from sliding, and as a result, the slider may fall off, or the fastener components such as the slider and the fastener element. There was a risk of causing damage.

The present invention has been made in view of the above-described conventional problems. A specific object of the present invention is to be able to use a versatile slider in which left and right flange portions are symmetrically arranged, and after the slider. Even if the left and right fastener stringers receive a lateral pulling force with the mouth end in contact with the stopper, the fastener element may jump out of the element guide path to the outside of the slider and be caught on the outer wall side of the flange. An object of the present invention is to provide a slide fastener that can be made difficult.

In order to achieve the above object, the slide fastener provided by the present invention has, as a basic configuration, a plurality of fastener elements arranged in rows on opposite side edges of the left and right fastener tapes to form an element row. A pair of left and right fastener stringers, a slider slidable along the element row, and a left and right fastener tape that is continuously fixed to one end of the left and right element rows, and is on the rear opening side of the slider And a slider that abuts the end portion, and the slider extends along the left and right side edges of the upper and lower blades, a guide column that connects between the upper and lower blades, and the shoulder side ends of the upper and lower blades. The left and right flange portions are arranged symmetrically with respect to each other, and the abutting end portion of the stopper on the side where the slider abuts is the abutting portion. When the left and right fastener stringers receive a lateral pulling force in a direction away from each other while the slider is in contact with a part of the portion, they contact the most shoulder end of the left and right flange portions of the slider A rotation promoting portion that promotes rotation of the slider so that the direction of the slider is inclined toward the fastener element side having a smaller contact area with the flange portion of the left and right fastener elements. Is the most important feature.

In the slide fastener according to the present invention, the rotation promoting portion is configured such that the relative position in the tape length direction of the slider facing end surface of the fastener facing the element row side is different in the tape width direction. Preferably it is.

Further, in the slide fastener of the present invention, the left and right flange portions of the slider after rotation and the left and right fastener elements that are in contact with the most shoulder end of the flange portion are in the body portion of each fastener element. It is preferable that the contact is made in an area of half or more of the dimension in the tape length direction.

Furthermore, in the slide fastener of the present invention, it is preferable that the slider facing end surface of the fastener has an inclined surface that is inclined with respect to the tape width direction of the fastener tape.
Moreover, it is preferable that the said fastener has a fastener main-body part fixed across the said fastener tape on either side, and the protrusion part which protruded from the said fastener main-body part to the said element row | line | column side.

In the slide fastener of the present invention, the interval in the tape length direction between the shoulder edge side edge positions of the left and right flange portions in the slider after rotation is more than half of the dimension in the tape length direction in the body portion of the fastener element. It is preferable to have a size of
Moreover, it is preferable that a waterproof layer made of synthetic resin is formed on at least one tape surface of the fastener tape.

The slide fastener according to the present invention is fixed to a pair of left and right fastener stringers, a slider in which left and right flange portions are symmetrically arranged, and one end portions of the left and right fastener stringers, and abuts the rear opening side end portion of the slider And a stopper (first stopper). In addition, the contact end of the fastener on the side where the slider contacts is the left and right shoulder openings when the left and right fastener stringers receive lateral pulling force with the slider in contact with a part of the contact end. Of the elements (fastener elements that contact the end of the slider flange on the most shoulder side), the shoulder opening side element with the smaller contact area with the flange part (specifically, the contact area with the flange part is the fastener element) A rotation accelerating portion that promotes rotation of the slider so that the direction of the slider is inclined toward the shoulder side element) side that is less than half of the dimension in the tape length direction.

If it is a slide fastener of the present invention having a stopper provided with a rotation promoting part as described above, the rear opening side end of the slider is in contact with the stopper (that is, the slide fastener is opened), When the left and right fastener stringers are subjected to lateral pulling force, the slider should be parallel to the tape surface of the fastener tape so that the contact area with the flange part of the left and right shoulder mouth side elements faces the smaller shoulder mouth side element side. The slider can be easily tilted by rotating it.

Here, the direction of the slider specifically refers to the direction in which the central axis of the slider body in the width direction of the upper and lower blades faces in the plan view or the bottom view of the slide fastener. In the present invention, the dimension in the tape length direction of the body part of the fastener element basically means the dimension in the tape length direction of the body part in a state where the left and right fastener elements are engaged with each other. However, it does not mean a dimension in the actual tape length direction (slider sliding direction) of the body portion in a state where is partially bent and the direction of the fastener element is inclined obliquely.

In the present invention, when the slider is tilted in a predetermined direction by receiving the lateral pulling force as described above, the shoulder-side element having a small contact area with the flange portion is moved from the element guide path to the shoulder. It can be moved relative to the outside. In this way, by positively displacing the shoulder-side element with respect to the slider, even if the left and right fastener stringers receive a lateral pulling force, the shoulder-side element can be made difficult to be caught on the outer wall side of the flange portion. .

As a result, the conventional malfunction due to the shoulder-side element being caught on the outer wall side of the flange portion is less likely to occur. Therefore, in the slide fastener of the present invention, the movement of the slider is not hindered by the shoulder-mouth side element, Can be smoothly slid toward the meshing direction. Further, since the slider is not slid with an excessive force, the slider, the fastener element, and the fastener tape can be prevented from being damaged due to excessive force.

In the slide fastener of the present invention, the rotation promoting portion of the fastener is configured such that the relative position in the tape length direction of the slider facing end surface facing the element row side of the fastener differs in the tape width direction. . For example, the rotation promoting portion faces the first facing region (for example, the left facing region) facing the left and right corners at the slider rear end side and the other corner at the slider facing end surface of the stopper. If it is configured by making the position in the tape length direction different from the second facing area (for example, the right facing area), when the left and right fastener stringers receive the lateral pulling force, they come into contact with the stoppers. It is possible to stably promote the rotation of the slider so that the direction of the slider is inclined in a predetermined direction.

Further, in the slide fastener of the present invention, the left and right flange portions of the slider that is rotated and tilted, and the left and right fastener elements that are in contact with the end portions closest to the shoulder opening of the flange portion, Contact is made in a region of more than half of the length of the body in the tape length direction.

That is, in the slide fastener of the present invention, when the slider is in contact with the stopper and the direction thereof is not inclined, the shoulder-side element disposed on one of the left and right fastener stringers is the trunk portion of the shoulder-mouth side element. The shoulder-side element arranged on the other fastener stringer is in contact with the flange portion of the slider in an area of more than half of the tape length direction of the tape. It is in contact with the flange of the slider in an area less than half of the area.

In such a state, the left and right fastener stringers receive a lateral pulling force, and as described above, the slider is rotated in a predetermined direction so that the direction of the slider is tilted. The shoulder side element whose area is less than half of the torso moves relative to the slider from the element guide path toward the outside of the shoulder opening, so that the shoulder side element does not contact the flange portion of the slider. can do.

When the shoulder side element is not in contact with the slider flange portion in this way, the fastener element that is in contact with the end of the flange portion where the shoulder side element is in contact with the end of the shoulder side is the shoulder element. The fastener element adjacent to the stopper side (hereinafter referred to as an adjacent element) is changed. In this case, the adjacent element and the flange portion of the slider are in contact with each other in a region of half or more of the dimension in the tape length direction in the body portion of the adjacent element.

Therefore, in the slide fastener of the present invention, the left and right flange portions in the slider that is rotated and tilted, and the left and right fastener elements that are in contact with the end portion on the most shoulder side of the flange portion, as described above, It can be in a state where it is in contact with a region of more than half of the length in the tape length direction in the body portion of each fastener element, and a sufficient contact area can be secured between the left and right fastener elements and the left and right flange portions. .

As a result, even if the left and right fastener stringers continue to receive lateral pulling force, the state in which these fastener elements are in contact with the flange portion can be stably maintained and can withstand lateral pulling force. It is possible to make it more difficult for the fastener element to protrude from the element guide path of the slider over the shoulder edge side edge of the flange portion and be caught on the outer wall side of the flange portion.

In the slide fastener of the present invention, the slider facing end surface of the fastener has an inclined surface that is inclined with respect to the tape width direction of the fastener tape. Thereby, the rotation promoting portion of the stopper can be stably configured, and the direction of the slider can be easily tilted when the left and right fastener stringers receive a lateral pulling force.

Further, in the slide fastener of the present invention, the stopper has a stopper main body portion that is fixed across the right and left fastener tapes, and a protruding portion that protrudes from the stopper main body portion to the element row side. In this case, the dimension (width dimension) of the protruding part in the tape width direction is set to be smaller than half the width dimension of the contact end part of the stopper.

When the stopper has such a protruding portion, when the left and right fastener stringers receive a lateral pulling force, the slider can be stably rotated and the slider can be tilted more easily. it can. Further, by causing the rotating slider to abut the slider facing surface of the stopper main body, it is possible to prevent the slider from being excessively inclined. Thereby, the operability of the slider when the slider is slid in the closing direction of the element row is prevented from being lowered, and the slider can be slid smoothly.

Furthermore, in the slide fastener of the present invention, the distance in the tape length direction between the shoulder edge side edge positions of the left and right flange portions in the slider that is rotated and tilted is the tape length direction in the body portion of the fastener element. It has more than half the size. By tilting the slider in such a state, the shoulder side element whose contact area with the flange portion was less than half of the torso before rotation is moved relative to the slider so that it does not contact the flange portion. It is possible to effectively move the shoulder-side element from being caught on the outer wall side of the flange portion.

The slide fastener of the present invention as described above is preferably used as a so-called waterproof slide fastener in which a waterproof layer made of a synthetic resin is formed on at least one tape surface of a fastener tape. In the waterproof slide fastener, since the waterproof layer has elasticity as described above, the position of the fastener element may slightly shift with respect to the tape. When the left and right fastener stringers are subjected to a lateral pulling force, the shoulder side element is often caught on the outer wall side of the flange portion of the slider, causing problems.

On the other hand, as described above, the slide fastener of the present invention is such that the fastener element remains on the outer wall side of the slider flange portion even when the left and right fastener stringers receive a lateral pulling force with the slider in contact with the stopper. This makes it possible to eliminate the problems that are likely to occur in the conventional waterproof slide fastener. Therefore, according to the present invention, it is possible to easily configure a waterproof slide fastener having increased strength (tear strength) against lateral pulling force in a state where the slide fastener is opened.

It is a top view which shows the slide fastener which concerns on Example 1 of this invention. It is a bottom view which expands and shows the 1st stopper (lower stopper) of the slide fastener. It is a top view which expands and shows the state which made the slider contact the 1st fastener in the slide fastener. FIG. 4 is a partial cross-sectional view showing a slider in cross section in the state of FIG. 3. It is a fragmentary sectional view showing the state where the direction of the slider was inclined. It is a top view which shows the slide fastener which concerns on Example 2 of this invention. It is a perspective view which expands and shows the fastener element of the slide fastener. It is a bottom view showing the 1st stop (lower stop) of the slide fastener. It is a fragmentary sectional view which expands and shows the state which made the slider contact the 1st fastener in the slide fastener. It is a fragmentary sectional view showing the state where the direction of the slider was inclined. It is a fragmentary sectional view which shows the relationship between the fastener stringer in the conventional slide fastener, a slider, and a 1st fastener.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings by way of examples. The present invention is not limited to the embodiments described below, and various modifications can be made as long as it has substantially the same configuration as the present invention and has the same effects. Is possible.

For example, the slide fastener described in the following embodiments is configured as a waterproof slide fastener, but the present invention can be similarly applied to a normal slide fastener that does not have a waterproof structure. . In each of the following embodiments, as will be described later, a fastener stringer is formed by injection molding a thermoplastic resin on a fastener tape and arranging a plurality of individual fastener elements. A fastener stringer may be configured by sewing continuous fastener elements formed in a zigzag shape on a fastener tape.

FIG. 1 is a plan view showing a slide fastener according to the first embodiment. FIG. 2 is an enlarged bottom view of the first fastener of the slide fastener. FIG. 3 is an enlarged plan view showing a state in which the slider is brought into contact with the first stopper in the slide fastener.

As described above, in the slide fastener, the front-rear direction refers to the tape length direction of the fastener tape, and is the same linear direction as the sliding direction in which the slider slides. In particular, the direction in which the slider is slid so as to engage the left and right element rows is referred to as the front, and the direction in which the slider is slid so as to release the engagement between the element rows is referred to as the rear.

Further, the left-right direction refers to the tape width direction of the fastener tape, which is parallel to the tape surface of the fastener tape and orthogonal to the tape length direction. In particular, in Example 1 and Example 2 to be described later, the left direction in the plan view of the slide fastener as shown in FIG. 1 (that is, when the longitudinal direction of the slide fastener is shown as the vertical direction of the drawing). And the right direction are the left side and the right side, respectively.

Further, the vertical direction refers to the tape front and back direction perpendicular to the tape surface of the fastener tape, and in particular, the direction on the side where the slider handle is arranged with respect to the fastener tape is the upper side, and the opposite direction is the lower side. To do.

The slide fastener 1 according to the first embodiment has a waterproof structure that prevents liquid such as water from leaking from the tape surface side to the tape back surface side (or from the tape back surface side to the tape surface side) when the slide fastener 1 is closed. It is configured as a waterproof slide fastener.

The waterproof slide fastener 1 includes a pair of left and right fastener stringers 10 in which a plurality of synthetic resin fastener elements 12 are injection-molded at opposing tape side edges of a waterproof tape 11 and an element row including a plurality of fastener elements 12. 13 slidably attached to the slider 13, a first stopper (lower stopper) 30 connected to the rear end portion of the element row 13, and a second stopper connected to the front end portion of the element row 13. (Upper stop) 40.

The left and right waterproof tapes 11 in the first embodiment are waterproof made of a polyurethane-based, polyester-based, polyamide-based or vinyl chloride-based thermoplastic elastomer on the tape surface and the back surface of a fastener tape woven or knitted in a band shape. The layers are laminated.

Since the waterproof layer of the waterproof tape 11 is made of the thermoplastic elastomer as described above, the waterproof property can be stably secured. Further, the waterproof tape 11 can be bent in the tape front / back direction and the tape width direction by increasing the flexibility of the waterproof tape 11, so that the waterproof slide fastener 1 can be easily handled. Further, if the entire surface of the fastener tape is covered with the thermoplastic elastomer, it can be easily attached to a fastener-attached product such as a wet suit by high-frequency welding or the like.

Each of the right and left waterproof tapes 11 includes a tape main part to which a fastener-attached product is attached along the tape length direction, and a tape side edge part (also referred to as an element attachment part) arranged inside the tape main part. And have.

The fastener element 12 of the first embodiment is formed by injection molding a thermoplastic resin such as polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon, polycarbonate or the like. The plurality of fastener elements 12 are attached to the tape side edge portions of the left and right waterproof tapes 11 at a predetermined mounting pitch along the tape length direction to form an element row 13.

As shown in FIGS. 3 and 4, for example, each fastener element 12 includes an engagement head 15 having an oval shape in the front-rear direction, and a neck portion 16 formed continuously from the engagement head 15 and having a constricted shape. A body part 17 formed continuously from the neck part 16, a shoulder part 18 extending in the front-rear direction from the neck part 16 and the body part 17, and a crotch part from the tape inner side end part of the body part 17 And a leg portion 19 branched and extended. Further, a fitting recess for fitting the shoulder portion 18 of the mating mating fastener element 12 and the tape side edge of the waterproof tape 11 is formed in the top (tip) of the meshing head 15.

Further, as shown in FIG. 4, each fastener element 12 has a first element half (surface side element half) arranged on the tape surface side across the tape side edge of the waterproof tape 11, and It has the 2nd element half part (back side element half part) distribute | arranged to the tape back surface side.

The first and second element halves of each fastener element 12 have shapes that are symmetrical with respect to each other with respect to the waterproof tape 11, and are fixed to the waterproof layer of the waterproof tape 11, respectively. They are connected and integrated through a through hole (not shown) formed in the waterproof tape 11.

In this case, the fastener element 12 has a relationship in which the dimension in the tape length direction of the body portion 17 of the fastener element 12 is larger than the dimension between the fastener element 12 located adjacent to the tape length direction. .

The present invention is not limited to such a dimensional relationship, but the fastener element 12 is such that the dimension in the tape length direction of the body portion 17 of the fastener element 12 as described above is located next to the tape length direction. It is preferably applied to a fastener stringer having a relationship larger than the dimension between That is, when such a dimensional relationship is satisfied, for example, the fastener element 12 on one fastener stringer 10 side is parallel to the tape width direction from the end in the tape length direction of the body portion 17 of the left fastener element 12, for example. When an imaginary line is drawn, the imaginary line passes through the region of the body portion 17 of the right fastener element 12. For this reason, the contact area with the flange portion of one of the two shoulder-mouth-side elements located on the shoulder-mouth side of the slider 20 is half the dimension in the tape length direction of the body portion 17 of the fastener element 12. It becomes easy to generate a relationship of less than.

The slider 20 according to the first embodiment includes a slider body 21 and a handle (not shown) that is rotatably held by the slider body 21. Further, the slider body 21 includes upper and lower blades 22 and 23, guide pillars 24 connecting the upper and lower blades 22 and 23 at one end (shoulder side end), and left and right edges of the upper and lower blades 22 and 23. Left and right flange portions 25a and 25b, and a handle attachment column 26 standing on the upper surface side of the upper wing plate 22.

Left and right shoulder openings are formed at the front end of the slider body 21 with the guide pillars 24 therebetween, and a rear opening is formed at the rear end of the slider body 21. Further, a substantially Y-shaped element guide path is formed between the upper and lower blades 22 and 23 to communicate the left and right shoulder openings with the rear opening. Further, the right and left waterproofing between the left and right upper flange portions 25 a and 25 b disposed on the upper blade 22 in the slider body 21 and the left and right lower flange portions 25 a and 25 b disposed on the lower blade 23 is provided. A tape insertion gap through which the tape 11 is inserted is formed.

In the first embodiment, the left and right flange portions 25a and 25b of the slider body 21 are formed symmetrically with respect to the center line in the width direction of the upper and lower blades 22 and 23. That is, the length from the shoulder-side end to the rear-portion end of the left and right flange portions 25a and 25b is the same. Furthermore, the length of the left and right fastener stringers 10 is such that the left and right flange portions 25a and 25b are bent so as to expand in the left-right width direction from the portion parallel to the front-rear direction on the rear mouth side toward the shoulder mouth side. The contact region with one of the shoulder-side elements 12a (in the case of the first embodiment, as shown in FIG. 4, the left shoulder-side element 12a) has a body portion 17 of the fastener element 12 in plan view. Is set to ensure the same size as the dimension in the tape length direction. The contact area of the shoulder side element 12a is a place where the inner wall of the flange parts 25a, 25b on the center line side in the width direction and the body part 17 of the element 12a are in contact with each other. It is a surface by the length of.

Here, as shown in FIG. 4, the shoulder side element 12a is a slider when the slider 20 is brought into contact with a forward projecting portion 33 (to be described later) of the first stopper 30 in the direction along the tape length direction. This means the left and right fastener elements 12 that are in contact with the ends of the left and right flange portions 25a and 25b on the most shoulder side. Further, the bent lengths of the left and right flange portions 25a and 25b are defined as the right and left side edges of the upper and lower blades 22 and 23 from the rear opening side edge to the shoulder opening side edge of the left and right flange portions 25a and 25b. The distance in the direction of bending along.

In addition, the slider 20 used for the slide fastener 1 of this invention stopped with respect to the element row | line | column 13 by having the stop nail | claw body with which the slider body 21 was mounted | worn, and the biasing member which urges | biases a stop nail | claw body. It is also possible to provide a stop mechanism that can hold the position.

The first stopper 30 of the first embodiment is connected to the rear end portion side of the element row 13 and is arranged so as to determine the rear end position of the sliding range of the slider 20. The first stopper 30 is formed by injection molding a polyurethane-based, polyester-based, polyamide-based, or vinyl chloride-based thermoplastic elastomer.

The first stopper 30 includes a first fastener body 31 arranged so as to be connected to the element row 13 and a first extension extending rearward from the first stopper body 31 through a step. And a front projecting portion 33 projecting forward from the front end of the first fastener body 31 to the front side (element row 13 side). The first stopper main body 31, the first extension 32, and the front protrusion 33 are molded and integrated.

Furthermore, the first fastener main body 31, the first extension 32, and the front protrusion 33 are a first half (front half) that is fixed to the tape surface side and a second half that is fixed to the tape back side. The first and second halves have symmetrical shapes with respect to the waterproof tape 11 as a reference.

The first fastener body 31 is fixed across the waterproof tape 11 on the left and right sides, and the dimension (thickness dimension) in the tape front and back direction is set to a certain size larger than that of the fastener element 12. .

In this case, a ridge line (or front end surface) on the front end side and a ridge line on the rear end side (first extension portion 32 side) in a region where the front protrusion 33 of the first fastener body 31 is not disposed ( Or the front end surface of the region where the front protrusion 33 facing the slider 20 of the first fastener body 31 is not disposed is formed in parallel with the tape width direction. ing.

Further, the ridge lines (or the left and right side surfaces) on the left and right side edge portions in the first fastener main body 31 are the intervals between the ridge lines (or side surfaces) (in other words, the tape width direction of the first fastener main body 31). The width dimension in FIG. 2 is inclined with respect to the tape length direction so as to gradually decrease toward the rear. For this reason, the 1st fastener main-body part 31 has a form which exhibits substantially trapezoid shape by planar view and bottom view.

Furthermore, the 1st fastener main-body part 31 embeds the rear-end part of the element row | line 13 in the state in which the right and left fastener elements 12 are meshed. Thereby, since the 1st fastener main-body part 31 is formed continuously with the element row | line | column 13, the watertightness between the waterproof tapes 11 on either side between the element row | line | column 13 and the 1st fastener 30 is stabilized. Secured.

The first extending portion 32 of the first stopper 30 extends from the first stopper main body 31 to the rear end edge of the waterproof tape 11 and has a certain tape width direction dimension (width dimension) along the tape length direction. It is formed. In this case, the width dimension of the first extension portion 32 is set to be smaller than the width dimension at the front end portion of the first fastener body portion 31.

The front protrusion 33 in the first stopper 30 has the same thickness as the first stopper body 31 and protrudes forward from the front end of the substantially trapezoidal first stopper body 31. In addition, a part of the fastener element 12 disposed at the rearmost end of the left element row 13 is embedded.

The front projecting portion 33 is disposed on the region of the left fastener stringer 10, and the width dimension of the front projecting portion 33 is smaller than half the width dimension at the front end portion of the first fastener body 31. Is set. Further, the left side surface of the front protruding portion 33 is formed continuously from the left side surface of the first fastener main body portion 31. The right side surface of the front projecting portion 33 is disposed on the left side of the contact position of the left and right waterproof tapes 11 and extends in a direction orthogonal to the front end surface of the first fastener main body portion 31.

The front end surface of the front projecting portion 33 facing the slider 20 is continuously formed with respect to the left side surface and the right side surface of the front projecting portion 33 via a curved chamfered portion. Further, the front end surface of the front protruding portion 33 is such that the left corner disposed on the tape main body side is positioned forward (element row 13 side) than the right corner disposed on the tape side edge. , Formed on an inclined surface inclined with respect to the tape width direction.

In the first stopper 30 of the first embodiment as described above, the front end portion of the first stopper main body 31 and the front protruding portion 33 are in contact with the slider 20 in the first stopper 30 on the side where the slider 20 contacts. Part (front end part). The left and right fastener stringers 10 receive a lateral pulling force at the contact end portion (front end portion) of the first stopper 30 in a state where the slider 20 contacts the first stopper 30 in the direction along the tape length direction. A rotation promoting portion is provided to urge the slider 20 to rotate in a predetermined direction.

In the rotation promoting portion in the first stopper 30 of the first embodiment, the front end surface of the front protrusion 33 is more than the position of the front end surface in the region where the front protrusion 33 in the first stopper main body 31 is not disposed. In addition to being provided on the front side, the front end surface of the front protrusion 33 is formed as an inclined surface as described above.

In other words, in the first embodiment, the first protrusion 30 is provided with the front protrusion 33, and the front end surface of the front protrusion 33 is inclined with respect to the tape width direction. The relative position in the tape length direction of the front end surface (that is, the front end surface of the front protrusion 33 and the front end surface of the first stopper main body 31) facing the slider 20 of the one stop 30 in the tape width direction. It is different.

Specifically, on the front end surface of the first stopper 30, a region on the front end surface of the front projecting portion 33 that faces the left corner of the rear end of the slider body 21 is defined as a first opposing region. When the area on the front end surface of the first fastener main body 31 facing the right corner at the rear opening side end of the slider body 21 is the second opposing area, the tape length of the first opposing area The position in the direction is different from the position in the tape length direction of the second facing region.

And since the front end part of the 1st fastener 30 has the above-mentioned form, the right and left fastener stringers 10 are in the state where the slider 20 is in contact with the front end inclined surface of the front protrusion part 33 of the first fastener 30. When receiving the lateral pulling force, the slider 20 receives the action of the lateral pulling force via the fastener element 12, so that it will be seen in a plan view in a direction parallel to the tape surface of the waterproof tape 11, as will be described later. In FIG. 3, it is possible to promote the rotation of the slider 20 so as to rotate in the clockwise direction.

The second stopper 40 of the first embodiment is connected to the front end side of the element row 13 and is arranged so as to determine the front end position of the sliding range of the slider 20. The second stopper 40 is made of the same material as the first stopper 30. It is formed by injection molding. The second stopper 40 includes a second stopper body 41 that stops the slider 20 by abutting it, and a second extension 42 that extends forward from the second stopper body 41. Yes. In the present invention, the form of the second stopper 40 is not particularly limited.

In the first embodiment, the second fastener main body 41 and the second extending portion 42 have a first half (front side half) arranged on the tape surface side and a second half arranged on the tape back side. And the first and second halves are fixed across the right and left waterproof tapes 11 and the waterproof tape 11 is used as a reference. They have a symmetrical shape.

The second stopper main body 41 is arranged at the upper end of the second fastener main body 41, and includes a slider abutting portion 41a that abuts the upper and lower blades 22 and 23 of the slider 20, and a slider abutting portion 41a. The slider insertion portion 41b extends rearward and is inserted into the element guide path of the slider 20, and the slider insertion portion 41b has a ridge portion 41c projecting in the tape front and back direction at the inner peripheral edge portion thereof. is doing.

In this case, the slider abutting portion 41a has a shape curved in front view so as to be along the shoulder edge side edges of the upper and lower blades 22 and 23 in the slider 20. The slider insertion portion 41b is formed with a thickness dimension smaller than that of the slider contact portion 41a so that it can be inserted into the element guide path of the slider 20.

The slider insertion portion 41b causes at least a part of the outer peripheral side surface of the slider insertion portion 41b to contact the flange portions 25a and 25b of the slider 20 when the slider 20 contacts the slider contact portion 41a. The insertion portion 41b has a substantially C-shaped configuration in plan view so that the distal ends of the left and right element rows 13 can be brought into close contact with each other.

When the slider 20 slid in the meshing direction of the element row 13 is brought into contact with the slider abutting portion 41a and stopped, the second fastener main body 41 having the above-described configuration is projected on the ridge 41c. Is closed to the inner surfaces of the upper and lower blades 22 and 23 of the slider 20 so as to surround the guide column 24 of the slider 20, and at the same time, the right and left end portions of the slider insertion portion 41b are brought into close contact with each other, thereby being watertight with the slider 20. Is secured.
The second extending portion 42 of the second stopper 40 is formed with a certain width dimension along the tape length direction from the second stopper main body portion 41 to the front end edge of the waterproof tape 11. Yes.

In the waterproof slide fastener 1 of the first embodiment having the above-described configuration, the slider 20 is slid along the element row 13 until it contacts the slider abutting portion 41a of the second stopper 40. The fastener elements 12 can be engaged with each other to close the waterproof slide fastener 1.

In the waterproof slide fastener 1 thus closed, the opposing tape side edges of the left and right waterproof tapes 11 are brought into close contact with each other by the engagement of the element rows 13, so that water or the like is interposed between the left and right waterproof tapes 11. Can be prevented from penetrating from the tape surface side to the tape back surface side (or from the tape back surface side to the tape surface side).

On the other hand, in the waterproof slide fastener 1 of the first embodiment, the slider 20 is slid along the element row 13 until it comes into contact with the first stopper 30, so that the meshing of the left and right element rows 13 is sequentially released. The waterproof slide fastener 1 can be opened. Further, when the slider 20 is brought into contact with the first stopper 30 and stopped, the slider 20 usually faces the direction along the tape length direction as shown in FIG.

At this time, the left side corner of the rear end portion of the slider body 21 is in contact with the inclined front end surface of the front protrusion 33 of the first stopper 30. Further, the portion other than the left corner (especially the right corner) of the rear end side end portion of the slider body 21 is in a state of being separated from the first stopper 30, and the rear end side end of the slider body 21. A space portion that allows rotation of the slider body 21 to be described later is formed between this portion and the front end surface of the first fastener main body portion 31.

Here, in the slider 20 of the first embodiment, as described above, the length of the bent length of the left and right flange portions 25a and 25b is the contact area between the left flange portion 25a and the left shoulder-side element 12a. In plan view, it is set so that the same size as the dimension (length dimension) in the tape length direction of the body portion 17 of the fastener element 12 can be secured.

For this reason, when the slider 20 faces the first stopper 30 in the tape length direction, as shown in FIG. 4, the left flange portion 25a of the slider 20 and the left shoulder opening side element 12a are In a plan view, they are in contact with each other in a region having the same size as the length of the body portion 17 of the fastener element 12. On the other hand, the right flange portion 25b of the slider 20 and the right shoulder opening side element 12a are in contact with each other in a region less than half the length of the body portion 17 of the fastener element 12 in plan view. Therefore, when the contact areas of the left and right flange portions 25a and 25b and the left and right shoulder port side elements 12a contacting the most shoulder end portions of the flange portions 25a and 25b are compared, the contact in the right shoulder port side element 12a is compared. The area is smaller.

The state of such a positional relationship is a state in which the virtual lines intersect perpendicularly in the front-rear direction when the shoulder ends of the left and right flange portions 25a, 25b are connected by virtual lines in parallel to the tape width direction. This is a state parallel to the front end face of the region where the front protrusion 33 in the first stopper 30 is not disposed. Here, the length in the front-rear direction of the contact region in the right shoulder-side element 12 a is not more than half of the length in the front-rear direction of the trunk portion 17.

When the left and right flange portions 25a, 25b of the slider 20 and the left and right shoulder opening side elements 12a are in contact with each other in the above-described state, the left and right fastener stringers 10 are separated from each other along the tape width direction. When receiving a pulling force, for example, in the case of a conventional waterproof slide fastener, the right shoulder opening side element 12a protrudes outward from the element guide path as described above and is caught on the outer wall side of the flange portion 25b. It was happening.

On the other hand, in the waterproof slide fastener 1 of the first embodiment, a rotation promoting portion for the slider 20 is configured by the form of the front end portion of the first stopper 30. For this reason, when the left and right fastener stringers 10 receive a lateral pulling force in the state of FIG. 4, the slider 20 receives the lateral pulling force via the fastener element 12, so that the rotation promoting portion of the first stopper 30 receives the lateral pulling force. Then, the slider 20 is viewed in a plan view in a direction parallel to the tape surface of the waterproof tape 11 so that the right corner of the rear end portion of the slider body 21 approaches the front end surface of the first fastener body 31. The rotation of the slider 20 can be urged in the clockwise direction. Here, as an example, by applying a lateral pulling force of 10 kgf to 20 kgf to the left and right fastener stringers 10, the rotation of the slider 20 is urged.

As a result, the slider 20 smoothly rotates clockwise with the contact portion between the first stopper 30 and the left corner of the rear end portion of the slider body 21 as a fulcrum, and the direction of the slider 20 is As shown in FIG. 5, the slider 20 can be tilted toward the shoulder-side element 12 a on the right side where the contact area with the flange portions 25 a and 25 b is small.

At this time, in the slide fastener 1 of the first embodiment, the slider 20 is further moved until the rear edge of the slider body 21 is parallel to the front end inclined surface of the front protrusion 33 of the first stopper 30. The slider body 21 can be rotated until the right corner of the rear opening side end of the slider body 21 comes into contact with the front end surface of the first fastener body 31.

In the first embodiment, the rear edge of the slider body 21 is inclined in the direction parallel to the front inclined surface of the front protrusion 33 of the first stopper 30 or in the clockwise direction from the direction. In the slider 20, the distance D in the front-rear direction (tape length direction) between the position of the shoulder-edge side edge of the left flange portion 25 a and the position of the shoulder-edge side edge of the right flange portion 25 b is a fastener element 12. It has a size of more than half of the length of the body portion 17 of the body. Note that the distance D between the shoulder edge edges of the left and right flange portions 25a and 25b has a size smaller than the dimension of the mounting pitch in the tape length direction of the fastener element 12 in the fastener stringer 10.

As described above, in the right shoulder-mouth side element 12a having a small contact area with the inner wall of the right flange portion 25b, the length of the contact area is less than half the length of the trunk section 17. Therefore, when the distance D is more than half, when the slider 20 is tilted, the shoulder side element 12a and the right flange portion 25b are not in contact with each other, as will be described later (or the right flange portion 25b). And a very slight contact).

Then, when the slider 20 rotates in the clockwise direction as described above, for example, the right shoulder opening that is in contact with the most shoulder end of the right flange portion 25b of the slider body 21 in the state shown in FIG. As shown in FIG. 5, the side element 12a is not in contact with the right flange portion 25b (or in a state of being slightly in contact with the right flange portion 25b) as shown in FIG. The body 21 can be relatively moved from the element guide path toward the outside of the shoulder opening.

Thus, the right and left shoulder-and-mouth side elements 12a are arranged in a state where they do not contact the right flange portion 25b of the slider body 21 (or a state where they are in slight contact with the right flange portion 25b). Even if the stringer 10 is further subjected to the lateral pulling force, the shoulder-mouth side element 12a can be hardly caught on the outer wall side of the right flange portion 25b.

At this time, the fastener element 12 that contacts the end of the right flange portion 25b closest to the shoulder opening side is not the right shoulder opening side element 12a, but is positioned adjacent to the rear side of the shoulder opening side element 12a and in the element guide path. A fastener element (adjacent element) 12b is formed, and the adjacent element 12b and the right flange portion 25b of the slider body 21 are in contact with each other in a region having the same size as the length of the body portion 17 of the fastener element 12 in plan view. Yes.

On the other hand, the left flange portion 25a of the slider 20 and the left shoulder-mouth side element 12a have the same size as the length of the body portion 17 of the fastener element 12 in plan view even if the orientation of the slider 20 is inclined as described above. The contact state is maintained in this area. Therefore, a sufficient contact area is secured between the left shoulder-side element 12a and the right adjacent element 12b and the left and right flange portions 25a, 25b.

Therefore, in the first embodiment, the left and right flange portions 25a and 25b of the slider body 21 and the right and left fastener stringers 10 receive the lateral pulling force when the slider 20 is inclined as described above. The left and right fastener elements 12 (ie, the left shoulder-mouth side element 12a and the right adjacent element 12b) that are in contact at the most shoulder-side ends of the flange portions 25a, 25b are the length dimensions of the body portion 17 of the fastener element 12. Since the contact is made in the region of the same size, the contact state between the fastener element 12 and the flange portions 25a and 25b is stably maintained. As a result, these shoulder-mouth side elements 12a and adjacent elements 12b are difficult to jump out of the slider 20 beyond the shoulder-edge edges of the flange portions 25a, 25b, and rotate so that the pitch on the meshing head 15 side is increased. It becomes difficult to receive the power of the direction to do.

For this reason, in the waterproof slide fastener 1 of the first embodiment, even when the right and left fastener stringers 10 receive a lateral pulling force in a state where the waterproof slide fastener 1 is open, the waterproof slide fastener 1 is disposed on the left fastener stringer 10. Both the fastener element 12 and the fastener element 12 disposed on the right fastener stringer 10 are extremely difficult to be caught on the outer wall side of the flange portions 25 a and 25 b of the slider body 21.

Therefore, in the first embodiment, unlike the conventional case, the sliding of the slider 20 is not hindered by the hook of the fastener element 12 with respect to the flange portions 25a and 25b. The dynamic operation can be secured stably. Moreover, since the slider 20 is not pulled and slid by an excessive force, the slider 20, the fastener element 12, and the fastener tape can be prevented from being damaged by receiving an excessive force.

FIG. 6 is a plan view showing the slide fastener according to the second embodiment. FIG. 7 is an enlarged perspective view showing a fastener element of the slide fastener. FIG. 8 is a bottom view showing a first stopper of the slide fastener. In addition, since FIG. 8 is a bottom view, the left-right direction is opposite.

The slide fastener 2 of the second embodiment has a waterproof structure that prevents liquid such as water from leaking from the tape surface side to the tape back surface side (or from the tape back surface side to the tape surface side) when the slide fastener 2 is closed. It is configured as a waterproof slide fastener. In addition, since the slide fastener 2 of the present Example 2 has low waterproofness compared with the waterproof slide fastener 1 in above-mentioned Example 1, it may be called a water-stop slide fastener.

The waterproof slide fastener 2 of the second embodiment includes a pair of left and right fastener stringers 50 in which a plurality of synthetic resin fastener elements 52 are injection-molded at opposite tape side edges of the waterproof tape 51, and a plurality of fastener elements 52. Adjacent to the front ends of the left and right element rows 53, a slider 60 slidably attached to the element row 53, a first stop (lower stop) 70 connected to the rear end of the element row 53, and The second stopper (upper stopper) 75 is provided.

Further, a space portion is formed in the rear end portion of the left and right fastener stringers 50 as an area where the fastener element 52 is not disposed. A sheet member 54 made of a polyurethane, polyester, polyamide or vinyl chloride thermoplastic elastomer is fixed across the right and left waterproof tapes 51 on the tape front side and the tape back side in the space portion. .

The left and right waterproof tapes 51 in the second embodiment have a tape main part and a tape side edge (element attachment part) arranged along one side edge (inner edge) of the tape main part. An enormous core string portion 51 a is arranged along the tape length direction on the inner edge of the waterproof tape 51.

The waterproof tape 51 is formed by laminating a waterproof layer made of a thermoplastic elastomer of polyurethane, polyester, polyamide or vinyl chloride on the surface of a woven or knitted fastener tape. . In this case, the waterproof layer is laminated with a certain thickness on the entire tape surface side including the core string portion 51a of the fastener tape.

In addition, although the waterproof layer of the waterproof tape 51 in this Example 2 is formed only on the tape surface side, in the present invention, the waterproof layer is formed only on the tape back surface side of the waterproof tape 51, It is also possible to form the waterproof tape 51 on both sides of the tape. In the waterproof slide fastener 2 according to the second embodiment, a water repellent agent or the like can be applied to the entire outer surfaces of the waterproof tape 51 and the fastener element 52.

The fastener element 52 of the second embodiment is formed by injection molding a waterproof tape 51 with a material in which a silicone resin or a fluororesin is contained in a thermoplastic resin such as polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon, or polycarbonate. It is formed by. Also, the plurality of fastener elements 52 are attached to the side edge of the tape including the core string portions 51a of the left and right waterproof tapes 51 with a predetermined mounting pitch along the tape length direction to form an element row 53. is doing.

Since the form of the fastener element 52 of the second embodiment is substantially the same as the fastener element arranged in the conventional waterproof (water-proof) slide fastener, the description thereof will be briefly given here. In the present invention, the form of the fastener element 52 is not particularly limited.

The fastener element 52 according to the second embodiment has a first element portion 55 disposed on the tape back surface side of the waterproof tape 51 and a shape different from the first element portion 55 disposed on the tape surface side of the waterproof tape 51. The 2nd element part 56 provided with. The first element portion 55 is formed continuously from the first body portion 55a fixed to the waterproof tape 51, the first body portion 55a, the neck portion 55b having a constricted shape, and the neck portion 55b. And an oval meshing head 55c.

The second element portion 56 extends in the tape width direction from the second barrel portion 56a so as to protrude from the tape inner edge of the waterproof tape, and the substantially rectangular parallelepiped second barrel portion 56a fixed to the waterproof tape 51. And an element head 56b. The element head portion 56b has a shape in which the length dimension gradually decreases in two steps toward the tip of the element head portion 56b, and includes a first gradually decreasing portion formed on the second body portion 56a side, and a first gradually decreasing portion. And a second gradually decreasing portion formed on the tip side from the portion through the stepped portion.

As shown in FIG. 8, when the left and right fastener elements 52 are engaged with each other, the second element portion 56 is interposed between the second element portions 56 of the fastener elements 52 adjacent to each other in the tape length direction of the engagement counterpart. Inserted, the front end surface and the rear end surface of the second element portion 56 are brought into contact with both the second element portions 56 of the mating counterpart, and the tip of the element head 56b is the core string portion of the waterproof tape 51 of the mating counterpart It has a shape and dimensions to be brought into contact with 51a.

The slider 60 of the second embodiment includes a slider body 61 and a handle 61a that is rotatably held by the slider body 61. The slider body 61 includes upper and lower blades 62 and 63, guide columns 64 that connect one end portions (shoulder side end portions) of the upper and lower blade plates 62 and 63, and left and right edge portions of the upper and lower blade plates 62 and 63. Left and right flange portions 65a and 65b, and a handle attachment column 66 standing on the upper surface side of the upper blade 62. In this case, the left and right flange portions 65a and 65b are formed symmetrically with respect to the center line in the width direction of the upper and lower blades 62 and 63.

Left and right shoulder openings are formed at the front end of the slider body 61 with the guide column 64 interposed therebetween, and a rear opening is formed at the rear end of the slider body 61. Further, a substantially Y-shaped element guide path is formed between the upper and lower blades 62 and 63 to communicate the left and right shoulder openings with the rear opening. Further, the left and right waterproof tapes 51 are inserted between the upper flange portions 65 a and 65 b disposed on the upper blade 62 in the slider body 61 and the lower flange portions 65 a and 65 b disposed on the lower blade 63. A tape insertion gap is formed.

The first stopper 70 of the second embodiment is connected to the rear end portion side of the element row 53 and is disposed so as to determine the rear end position of the sliding range of the slider 60. The first stopper 70 is formed with a thickness dimension larger than that of the fastener element 52 so that the slider 60 is brought into contact with and stopped.

Further, the first stopper 70 is formed by injection molding a polyurethane-based, polyester-based, polyamide-based or vinyl chloride-based thermoplastic elastomer, and the rear end portion of the element row 53 is connected to the left and right fastener elements 52. Are buried in mesh.

The first stopper 70 is disposed on the tape rear surface side of the waterproof tape 51, and is disposed on the tape surface side with a substantially trapezoidal first half 71 (back surface half) in a bottom view. The first half 71 and the second half 72 have different forms. The second half 72 (surface-side half) is substantially rectangular. The first half 71 and the second half 72 are connected via a through hole (not shown) formed in the waterproof tape 51.

In this way, by making the first half 71 and the second half 72 of the first stopper 70 different in form, a rotation promoting portion is provided in the first half 71 as will be described later, and the rotation of the slider 60 is promoted. It is possible to improve the appearance quality of the waterproof tape 51 by improving the appearance of the second half 72 on the side exposed to the outside.

As shown in FIG. 8, the first half 71 disposed on the tape back surface side of the second embodiment straddles the left and right waterproof tapes 51, the upper end portion of the sheet member 54, and the waterproof tape. 51 is fixed. The left and right side surfaces of the first half 71 are disposed in parallel with the tape length direction, and the rear end surface is disposed in parallel with the tape width direction.

On the other hand, the front end surface of the first half portion 71 has a left corner (on the right corner in FIG. 8) disposed on the left fastener stringer 50 side, and a right corner disposed on the right fastener stringer 50 side. It is formed in the inclined surface which inclined with respect to the tape width direction so that it may be located ahead of a part (left corner in FIG. 8).

As shown in FIG. 6, the second half portion 72 arranged on the tape surface side is fixed to the upper end portion of the sheet member 54 and the waterproof tape 51 so as to straddle the left and right waterproof tapes 51. ing. The left and right side surfaces and the rear end surface of the second half portion 72 are arranged at positions symmetrical with the left and right side surfaces and the rear end surface of the first half portion 71.

The front end face of the second half 72 is arranged in parallel with the rear end face of the second half 72, that is, parallel to the tape width direction. In this case, the front end surface of the second half 72 is at the same position as the right corner of the front end surface of the first half 71 in the tape length direction, or on the rear side of the right corner. Arranged in position.

In the second embodiment, the left and right fastener stringers 50 receive a lateral pulling force at the front end portion of the first half 71 of the first stopper 70 in a state where the slider 60 is in contact with the first stopper 70. A rotation promoting portion is provided to urge the slider 60 to rotate in a predetermined direction as described in detail below.

The rotation promoting portion in the second embodiment is configured by the front end surface of the first half 71 of the first stopper 70 being formed on an inclined surface inclined with respect to the tape width direction, thereby A first opposing region that faces the left corner of the lower wing plate 63 of the lower wing plate 63 of the slider body 61, and a right corner of the lower wing plate 63 of the lower wing plate 63 of the slider body 61. The positions in the tape length direction of the second opposing region facing each other are made different from each other.

And since the front end surface in the 1st half part 71 of the 1st fastener 70 inclines, a left and right fastener in the state which the slider 60 contacted in the direction along the tape length direction to this inclined front end surface When the stringer 50 receives a lateral pulling force, the slider 60 rotates in a direction parallel to the tape surface of the waterproof tape 51 in a clockwise direction in a plan view as will be described later ( It is possible to promote the rotation of the slider 60 so as to rotate counterclockwise when viewed from the bottom.

The second stoppers 75 are respectively attached to the left and right adjacent to the fastener elements 52 arranged at the foremost ends of the left and right element rows 53 so that the slider 60 does not fall off from the front end side of the element rows 53. . The second stopper 75 is formed by injection molding the same material as the first stopper 70. In the present invention, the configuration of the second stopper 75 is not particularly limited and can be arbitrarily changed.

In the waterproof slide fastener 2 according to the second embodiment having the above-described configuration, the left and right fastener elements 52 are moved to each other by sliding the slider 60 along the element row 53 until it contacts the second stopper 75. The waterproof slide fastener 2 can be closed by engaging with each other, so that liquid such as water passes from the tape surface side to the tape back surface side (or from the tape back surface side through the space between the left and right fastener stringers 50. Intrusion can be prevented.

On the other hand, in the waterproof slide fastener 2 of the second embodiment, by sliding the slider 60 along the element row 53 until it contacts the first stopper 70, the meshing of the left and right element rows 53 is sequentially released, The waterproof slide fastener 2 can be opened. When the slider 60 is brought into contact with the first stopper 70 and stopped, the slider 60 is usually oriented in the direction along the length of the tape as shown in FIG. .

At this time, in the slider 60, the left corner of the rear opening side end portion of the lower blade 63 of the slider body 61 is in contact with the inclined front end surface of the first half 71 of the first stopper 70. At the same time, a portion of the lower wing plate 63 other than the left corner of the rear mouth end (particularly, the right corner of the slider mouth 61 at the rear mouth end) is in a state of being separated from the first stopper 70. In addition, a space portion that allows rotation of the slider body 61 is formed between the right-side corner portion of the slider 60 and the first stopper 70.

Further, at this time, when the contact areas of the left and right flange portions 65a and 65b of the slider body 61 and the left and right shoulder-side elements 52a contacting the most shoulder-side ends of the flange portions 65a and 65b are compared, The contact area of the shoulder-mouth side element 52a (shoulder-side element 52a located on the left side in FIG. 9 which is a bottom view) is smaller.

In such a state, when the left and right fastener stringers 50 receive a lateral pulling force in a direction separating from each other along the tape width direction, the first half 71 of the first stopper 70 in the second embodiment includes: Since the rotation promoting portion is configured as described above, the slider 60 is arranged such that the right corner of the rear opening side end portion of the lower blade 63 approaches the front end surface of the first half 71 of the first stopper 70. The slider 60 is urged to rotate in a direction parallel to the tape surface of the waterproof tape 51 in a clockwise direction in plan view (in FIG. 9 which is a bottom view in a counterclockwise direction). it can.

As a result, the slider 60 smoothly rotates with the contact portion between the first stopper 70 and the left corner of the rear opening side end of the lower blade 63 as a fulcrum, and the orientation of the slider 60 is shown in FIG. As described above, the contact area of the slider 60 with the flange portions 65a and 65b can be inclined toward the shoulder-side element 52a.

At this time, in the slide fastener 2 of the second embodiment, the slider 60 is rotated until the entire rear opening side edge of the lower wing plate 63 contacts the front end surface of the first half 71 of the first stopper 70. be able to. Further, in this case, the distance D in the tape length direction between the position of the shoulder opening side edge of the left flange portion 65a and the position of the shoulder opening side edge of the right flange portion 65b is the first and second of the fastener element 52. It has a size that is at least half the length of the body portions 55a and 56a and smaller than the size of the mounting pitch of the fastener element 52 in the tape length direction.

Then, by rotating the slider 60 as described above, for example, the right shoulder-mouth side element 52a that has been in contact with the right flange portion 65b in the state shown in FIG. As described above, the slider body 61 can be relatively moved toward the outside of the shoulder opening until the right flange portion 65b is not contacted. Thereby, even if the left and right fastener stringers 50 continue to receive the lateral pulling force, it is possible to make it difficult for the right shoulder-side element 52a to be caught on the outer wall side of the flange portion 65b.

At this time, the adjacent element 52b adjacent to the rear side of the right shoulder-side element 52a and the right flange portion 65b of the slider body 61 are in the first and second body portions 55a and 56a of the fastener element 52 in plan view. Contact is made in an area of the same size as the length. Further, the left flange portion 65a of the slider 60 and the left shoulder / mouth side element 52a have the length dimension of the first body portion 55a of the fastener element 52 in plan view even when the orientation of the slider 60 is inclined as described above. Contact in more than half of the area. Therefore, a sufficient contact area is secured between the left shoulder-side element 52a and the right adjacent element 52b and the left and right flange portions 65a, 65b.

Accordingly, also in the second embodiment, as in the first embodiment, even if the left and right fastener stringers 50 continue to receive the lateral pulling force, the fastener element 52 is moved to the flange portions 65a and 65b of the slider body 61. It can be made difficult to get caught on the outer wall side. For this reason, a smooth sliding operation of the slider 60 can be stably secured, and the slider 60, the fastener element 52, and the fastener tape are not subjected to excessive force because the slider 60 is not pulled by an excessive force. Can be prevented from being damaged.

DESCRIPTION OF SYMBOLS 1, 2 Slide fastener 10 Fastener stringer 11 Waterproof tape 12 Fastener element 12a Shoulder side element 12b Adjacent element 13 Element row 15 Engagement head 16 Neck part 17 Body part 18 Shoulder part 19 Leg part 20 Slider 21 Slider body 22 Upper wing board 23 Lower wing plate 24 Guide pillar 25a Left flange part 25b Right flange part 26 Pulling attachment pillar 30 First stopper (lower stopper)
31 1st stopper main-body part 32 1st extension part 33 Front protrusion part 40 2nd stopper (upper stopper)
41 Second Stopper Body 41a Slider Abutting Part 41b Slider Insertion Part 41c Projection Part 42 Second Extension Part 50 Fastener Stringer 51 Waterproof Tape 51a Core String Part 52 Fastener Element 52a Shoulder Side Element 52b Adjacent Element 53 Element Row 54 seat member 55 first element part 55a first body part 55b neck part 55c meshing head part 56 second element part 56a second body part 56b element head part 60 slider 61 slider body 61a handle 62 upper wing plate 63 lower wing plate 64 guide Pillar 65a Left flange 65b Right flange 66 Pulling column 70 First stop (bottom Ingredients)
71 First half 72 Second half 75 Second stop (upper stop)
D Distance in the tape length direction between the positions of the shoulder edge side edges of the left and right flanges

Claims (7)

1. A pair of left and right fastener stringers (10, 51) in which a plurality of fastener elements (12, 52) are arranged on the opposite side edges of the left and right fastener tapes (11, 51) to form an element row (13, 53) 50), sliders (20, 60) slidable along the element rows (13, 53), and right and left fastener tapes (continuous to one end of the left and right element rows (13, 53)). 11, 51) and a stopper (30, 70) that abuts the end of the rear opening of the slider (20, 60), and the slider (20, 60) has upper and lower wings. A guide column (24, 64) connecting between the plate (22, 23, 62, 63) and the shoulder opening side end of the upper and lower blades (22, 23, 62, 63), and the upper and lower blades (22, 23, 62, 63) a slide fastener (1, 2) comprising left and right flange portions (25a, 25b, 65a, 65b) arranged symmetrically along the left and right side edge portions of
   The abutting end of the stopper (30, 70) on the side where the slider (20, 60) abuts is left and right with the slider (20, 60) in contact with a part of the abutting end. Of the left and right flange portions (25a, 25b, 65a, 65b) of the slider (20, 60) when the fastener stringers (10, 50) are subjected to a lateral pulling force in a direction away from each other. Of the left and right fastener elements (12a, 52a) that come into contact with the end portion of the flange portion (25a, 25b, 65a, 65b) toward the fastener element (12a, 52a) side with the smaller contact area A rotation facilitating part that promotes rotation of the slider (20, 60) so that the direction of the slider (20, 60) is inclined.
   A slide fastener characterized by that.
2. The rotation promoting portion is configured by a relative position in the tape length direction of the slider facing end surface of the stopper (30, 70) facing the element row (13, 53) being different in the tape width direction. Become,
   The slide fastener according to claim 1.
3. The left and right flange portions (25a, 25b, 65a, 65b) of the slider (20, 60) after rotation and the left and right sides of the flange portions (25a, 25b, 65a, 65b) that contact at the most shoulder end The fastener elements (12a, 12b, 52a, 52b) of the fastener elements (12, 52) are in contact with each other in a region more than half of the tape length dimension of the body (17, 55a, 56a) of the fastener elements (12, 52). The slide fastener according to claim 1 or 2.
4. The slide fastener according to claim 2, wherein the slider facing end surface of the fastener (30, 70) has an inclined surface inclined with respect to the tape width direction of the fastener tape (11, 51).
5. The fastener (30) protrudes from the fastener body (31) to the element row (13) side, with the fastener body (31) secured across the right and left fastener tapes (11). The slide fastener according to claim 2, further comprising a protrusion (33).
6. The distance (D) in the tape length direction between the shoulder edge side edge positions of the left and right flange portions (25a, 25b, 65a, 65b) in the slider (20, 60) 後 after rotation is the fastener element (12, 52) The slide fastener according to any one of claims 1 to 5, wherein the slide fastener has a size that is at least half of the dimension in the tape length direction of the trunk portion (17, 55a, 56a).
7. The slide fastener according to any one of claims 1 to 6, wherein a waterproof layer made of a synthetic resin is formed on at least one tape surface of the fastener tape (11, 51).

Images