Slide fastener

Abstract

In a slider (10) for a slide fastener according to the present invention, a guide post (33) has element locking parts (40) which face separation paths (37a, 37b) of a guide path (37) and to which engagement head parts (13a) of a fastener element (13) are locked. The element locking parts (40) have locking surfaces (41) that face rearward and that restrict the slider (30) from moving rearward in a locked state in which the engagement head parts (13a) are locked to the element locking parts (40). The separation paths (37a, 37b) have, on the outer sides of the locking surfaces (41) of the guide post (33) in the left-right direction, release spaces (43) that allow outward movement of a fastener stringer (10) in the left-right direction so as to release the locked state of the engagement head parts (13a) and the element locking part (40).

Description

Technical Field

[0001] The present invention relates to a slide fastener.

Background Art

[0002] Conventionally, a slide fastener is attached to an opening of various types of clothing and bags, and by sliding a slider arranged on the slide fastener, the left and right element rows can be meshed or separated to open and close the opening. Further, as a slider used for a slide fastener, there is known a slider provided with a stop mechanism (locking mechanism) capable of holding the slider at a stop position when the slider is stopped at an arbitrary position on the element row.

[0003] Such a stop mechanism includes a lock pin or a stop claw. For example, a stop claw provided on a spring member is projected into an element guide path and locked to a fastener element of an element row inserted through the element guide path to hold (also referred to as locking) the slider at a stop position with respect to the element row.

[0004] Further, in the slide fastener described in Patent Document ①, an inverted L-shaped stop portion projecting toward the element guide path is provided on the guide side surface of the connecting column, and the stop portion is provided between the front end and the rear end of the flange portion in the front-rear direction. Thereby, when the element row is about to be opened outward, the fastener element engages with the stop portion. Further, on the upper surface of the upper wing plate, a handle attachment column for attaching a handle is provided.

[0005] Note: Here, “Patent Document ①” is a placeholder in the original text. If there is a specific patent document number or title, it should be accurately filled in during actual translation.Furthermore, in the slider for slide fasteners described in Patent Document 2, claws are formed at the shoulder tips of the left and right flanges of the upper and lower wings, respectively, to engage the reversal portion of the fastener element. In addition, a second claw portion is attached to one of the guide flanges, offset by one pitch of the fastener element from the claw, and a housing portion is formed between the claw and the second claw portion to accommodate the reversal portion. This prevents the slider from moving naturally and separating the meshing elements when a force is applied to the meshing elements in a direction that opens laterally. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Chinese Patent Application Publication No. 109924615 Specification [Patent Document 2] Japanese National Law Publication No. 6-26169 [Overview of the project] [Problems that the invention aims to solve]

[0007] However, slide fasteners equipped with the aforementioned locking mechanism require a spring member with a stopper claw and a cover to house the spring member, which increases the number of parts and thus the cost.

[0008] Furthermore, since the spring member with the stop claw, cover, pull handle, and pull handle mounting column are located on the upper surface of the upper wing plate, the slider becomes thicker, and improvements were needed to increase the freedom of design.

[0009] Furthermore, both Patent Documents 1 and 2 prevent the interlocked fastener elements from separating when the element row is about to open outwards, but they do not include a locking mechanism to hold the slider in the stop position. In addition, Patent Documents 1 and 2 have a pull tab and a pull tab mounting post, resulting in a thick slider and the problem of the pull tab dangling.

[0010] This invention has been made in view of the above circumstances, and its purpose is to provide a slide fastener in which a locking mechanism for holding the slider in the stop position can be constructed with a small number of parts. [Means for solving the problem]

[0011] The above objective of the present invention is achieved by the following configuration. (1) A pair of left and right fastener stringers, each having a row of elements with multiple fastener elements on the tape side edge of the fastener tape, A slider that slides along the aforementioned row of elements, A slide fastener having, The fastener element has a meshing head that engages with the fastener element on the mating side, The slider comprises an upper wing plate and a lower wing plate arranged opposite each other vertically, a guide post connecting the upper wing plate and the lower wing plate, and a pair of left and right flanges formed on both the left and right sides of at least one of the upper wing plate and the lower wing plate, extending from the rear end to the shoulder end of the slider. Between the upper and lower wing plates of the slider, an element guide path is formed which guides the element row, including a pair of separation passages separated to the left and right by the guide pillars, and a merging passage where the separation passages merge behind the separation passages. The guide post faces the separation passage of the element guide path and has an element locking portion into which the interlocking head of the fastener element is locked. The element locking portion has a rearward-facing locking surface that restricts the slider from moving backward when the meshing head is locked to the element locking portion. The separation passage has a relief space on the left-right outer side of the locking surface of the guide column that allows the fastener stringer to move outward in the left-right direction in order to release the locking state between the interlocking head and the element locking portion. Slide fastener. (2) The front end of the flange is located behind the rear end of the guide column. (1) The slide fastener described above. (3) The front end of the flange is located at the same position as the rear end of the guide column, or in front of it, (1) The slide fastener described above. (4) The locking surface is formed inclined with respect to the left and right directions such that it becomes rearward as it moves outward in the left and right directions. A slide fastener as described in any of (1) to (3). (5) The guide post has a projection that extends rearward from the locking surface at its intermediate position in the left-right direction, The element locking portion forms a recess with the locking surface and the left and right side surfaces of the protruding portion. A slide fastener as described in any of (1) to (4). (6) The element locking portion is formed only on the left and right sides of the guide column facing the separation passage through which the row of elements having a butterfly rod is inserted. A slide fastener as described in any of (1) to (4). (7) The pair of element locking portions formed on both the left and right sides of the guide column are formed offset in the front-rear direction by half a pitch of the fastener element. A slide fastener as described in any of (1) to (5). [Effects of the Invention]

[0012] According to the slide fastener of the present invention, the locking mechanism that holds the slider in the stop position can be constructed with a small number of parts. [Brief explanation of the drawing]

[0013] [Figure 1] This is a front view of a slide fastener according to the first embodiment of the present invention. [Figure 2] Figure 1 is a perspective view showing the slider for a slide fastener. [Figure 3] (a) is a front view of the slider for the slide fastener in Figure 2, (b) is a side view thereof, and (c) is a bottom view thereof. [Figure 4] (a) is a cross-sectional view of a slider for a slide fastener along line IV-IV in FIG. 3(b), and (b) is an enlarged view of part IV' in (a). [Figure 5A] It is a diagram showing a state at the time of locking in which separation of the engaged fastener elements is prevented even when trying to pull down the slider. [Figure 5B] It is a diagram showing a state at the time of unlocking in which the fastener elements are separated by pulling the fastener stringer outward in the left-right direction. [Figure 6] (a) is a perspective view of a slider for a slide fastener according to the second embodiment, (b) is a side view thereof, and (c) is a bottom view thereof. [Figure 7A] It is a diagram showing a state at the time of locking in which separation of the engaged fastener elements is prevented even when trying to pull up the slider. [Figure 7B] It is a diagram showing a state at the time of unlocking in which the fastener elements are separated by pulling the fastener stringer in the left-right direction. [Figure 8A] It shows a slide fastener according to the third embodiment, and is a diagram showing a state at the time of locking in which separation of the engaged fastener elements is prevented even when trying to pull down the slider. [Figure 8B] It is a diagram showing a state at the time of unlocking in which the fastener elements are separated by pulling the fastener stringer in the left-right direction. [Figure 9] (a) is a diagram showing a state in which the slider according to the third embodiment inserted into the element row is operated, and (b) is a diagram showing a state in which the slider of FIG. 2 inserted into the element row is operated. [Figure 10] It is a diagram corresponding to FIG. 5(a) showing a slide fastener according to the first modification of the present invention. [Figure 11] (a) is a perspective view of a slider for a slide fastener according to the second modification of the present invention, and (b) is a plan view thereof. [Figure 12]This figure, corresponding to Figure 4, shows a slider for a slide fastener according to a third modified example of the present invention. [Figure 13] This figure, corresponding to Figure 4, shows a slider for a slide fastener according to a fourth modified example of the present invention. [Modes for carrying out the invention]

[0014] Hereinafter, sliders for slide fasteners according to each embodiment of the present invention will be described in detail with reference to the drawings.

[0015] In the following description, the front-to-back direction refers to the direction parallel to the sliding direction of the slider, and is the direction of the tape length of the fastener tape. In particular, in the first and third embodiments, the direction in which the slider slides to engage the left and right rows of elements is defined as the front, and the direction in which it slides to separate the left and right rows of elements is defined as the rear. The left-to-right direction refers to the tape width direction of the fastener tape, and as shown in Figure 1, the left and right sides when the slide fastener is viewed from the front are defined as the left and right sides, respectively. The up-and-down direction refers to the front-to-back direction of the tape tape, perpendicular to the tape surface of the fastener tape, with the front side being the upper side and the back side being the lower side relative to the plane of Figure 1.

[0016] (First Embodiment) First, a slide fastener according to the first embodiment of the present invention will be described with reference to Figures 1 to 5B.

[0017] The slide fastener 1 of this embodiment comprises a pair of left and right fastener stringers 10, 10 that extend front to back and are arranged parallel to each other left to right, and a slider 30 that moves back and forth along the opposing left and right side edges of the pair of fastener stringers 10, 10. Although not shown, the slide fastener 1 also has upper and lower stops at the front and rear ends of the fastener stringers 10. However, the slide fastener 1 of this embodiment may be an open product equipped with an opening / closing insert instead of a lower stop.

[0018] Each pair of left and right fastener stringers 10 comprises a fastener tape 11 extending forward and backward, and a row of elements 12 fixed to the tape side edge 11b of the fastener tape 11.

[0019] Each of the left and right fastener tapes 11 is woven or knitted in a narrow strip shape and has a tape main portion 11a that is sewn onto the fastener-attached product (e.g., clothing) and a tape side edge portion 11b to which the element row 12 is attached.

[0020] Each element row 12 has a plurality of fastener elements 13 arranged at intervals along the opposing tape side edges 11b of the tape. In this embodiment, each element row 12 is formed by a coil-like continuous coil element in which a large number of fastener elements 13 are sewn to the tape side edges 11b with sewing thread 14.

[0021] As shown in Figure 5(a), the fastener element 13 has a meshing head 13a that meshes with the opposing fastener element 13, an upper leg portion 13b and a lower leg portion extending in the width direction from the meshing head 13a, and a reversal portion 13c that connects the upper leg portion 13b to the lower leg portion of the adjacent fastener element 13, forming an internal space surrounded by these. Within this internal space, a single core cord (not shown) is arranged along the longitudinal direction of the fastener tape 11.

[0022] In this embodiment, the material of the fastener element 13 is not limited, and synthetic resins such as polyacetal, polypropylene, polybutylene terephthalate, nylon, and polycarbonate may be used, or metals such as copper alloys may be used. In this embodiment, the fastener element 13 is configured to be elastically deformable, particularly in the vertical direction, by injection molding a synthetic resin into a predetermined shape.

[0023] The form of the fastener element 13 is not limited to a coil-shaped continuous coil element, but can be any fastener element having a meshing head 13a that engages with the fastener element 13 on the mating side. That is, the fastener element 13 may be a synthetic resin fastener element fixed at predetermined intervals along the length of the fastener tape by injection molding, or a metal fastener element fixed by crimping, etc.

[0024] As shown in Figures 2 to 4, the slider 30 of this embodiment includes an upper wing plate 31 and a lower wing plate 32 arranged opposite each other vertically, a guide column 33 connecting the upper wing plate 31 and the lower wing plate 32 at the front shoulder side, and a pair of left and right flanges 34 and 35 formed on both the left and right sides of at least one of the upper wing plate 31 and the lower wing plate 32, extending from the rear side of the slider 30 toward the shoulder side.

[0025] The left and right pairs of flanges 34 and 35 of the upper wing plate 31 and the lower wing plate 32 extend in a direction that is close to each other. Between the left and right upper flanges 34 that are suspended from the upper wing plate 31 and the left and right lower flanges 35 that are erected from the lower wing plate 32, tape grooves 36 are formed through which the left and right fastener tapes 11 can be inserted.

[0026] A string insertion hole 39 is formed in the front part of the upper wing plate 31, and the front shapes of the upper wing plate 31 and the lower wing plate 32 are different from each other.

[0027] In this embodiment, the left and right pair of flanges 34 and 35 are provided on both the upper wing plate 31 and the lower wing plate 32, but the present invention is not limited to this, and they may be provided on either the upper wing plate 31 or the lower wing plate 32.

[0028] The front end of the slider 30 has left and right shoulders with a guide column 33 in between, and the rear end of the slider 30 has a rear opening. Also, as shown in Figure 4, between the upper wing plate 31 and the lower wing plate 32 of the slider 30, a roughly Y-shaped element guide path 37 is formed which guides the element row 12, and includes a pair of separation passages 37a and 37b separated to the left and right by the guide column 33, and a merging passage 37c where the separation passages 37a and 37b merge behind the separation passages 37a and 37b.

[0029] Furthermore, the guide column 33 has element locking portions 40 at the rear of both the left and right sides facing the separation passages 37a and 37b of the element guide path 37, into which the interlocking head 13a of the fastener element 13 is locked.

[0030] The element locking portion 40 has a rearward-facing locking surface 41 that restricts the slider 30 from moving backward when the engaging head 13a is locked to the element locking portion 40. The element locking portion 40 is formed by cutting out the rear of both left and right sides 33a of the guide column 33 in a stepped manner, and has a projection 42 that protrudes rearward from the locking surface 41 at the middle of the guide column 33 in the left and right direction.

[0031] Each locking surface 41 has a length in the left-right direction that allows it to lock onto the meshing head 13a, and is formed inclined with respect to the left-right direction such that it becomes more rearward as it extends outward in the left-right direction. Each locking surface 41 may be oriented, for example, along the left-right direction, but it is preferable that it provides a stronger force that causes the fastener stringer 10 to return inward. Therefore, as shown in Figure 4(b), it is preferable that the inclination angle θ of each locking surface 41 is in the range of 10° to 40° with respect to a line L along the left-right direction passing through its base end 41a.

[0032] Furthermore, as shown in Figure 5(b), when the stringer 10 enters the separation passages 37a and 37b, if the angle of the stringer 10 with respect to the line LA along the front-rear direction is defined as the meshing angle α, it is preferable that the inclination angle θ of each locking surface 41 be greater than or equal to the meshing angle α. For example, if the inclination angle θ of each locking surface 41 is equal to the meshing angle α, the direction in which the fastener stringer 10 enters the separation passages 37a and 37b is perpendicular to each locking surface 41. As a result, the meshing head 13a of the fastener element 13 and the locking surface 41 come into contact in a way that allows them to lock together, providing a high locking effect. Even if the inclination angle θ of each locking surface 41 is smaller than the meshing angle α, the meshing head 13a of the fastener element 13 and the locking surface 41 can still come into contact, but the degree of locking will be reduced.

[0033] The protruding portion 42 has two other parallel left and right sides 42a, 42a which are narrower than the left and right sides 33a of the guide column 33 which are parallel to each other, and its rear end is formed in a semi-cylindrical shape.

[0034] Therefore, the element locking portion 40 constitutes a locking mechanism that holds the slider 30 in the stopped position by housing and locking the engaging head portion 13a in a recess 44 formed between the locking surface 41 and the left and right side surface 42a of the protruding portion 42. Furthermore, if the inclination angle θ of each locking surface 41 is greater than the meshing angle α, the meshing head 13a of the fastener element 13 becomes less likely to come out of the recess 44, thus providing a high locking effect. When the inclination angle θ of each locking surface 41 is greater than the meshing angle α, the width of the protrusion 42 in the left-right direction may be narrowed in order to secure the size of the recess 44 (the area that accommodates the meshing head 13a of the fastener element 13).

[0035] Furthermore, at the rear end of flanges 34 and 35, the inner surfaces facing the merging passage 37c of the element guide path 37 form straight surfaces 35a that are parallel to each other and aligned in the front-rear direction. On the other hand, forward of the straight surfaces 35a, the inner surfaces facing the separation passages 37a and 37b of the element guide path 37 form widened surfaces 35b that are curved or inclined outward in the left-right direction, so as to move away from each other in the left-right direction.

[0036] In this embodiment, the front ends 34c and 35c of the flanges 34 and 35 (see Figure 3(b)) are located behind the rear end of the guide column 33 (i.e., the rear end 42b of the projection 42).

[0037] Therefore, the separation passages 37a and 37b have a relief space 43 on the left and right outer side of the locking surface 41 of the guide column 33 that allows the fastener stringer 10 to move outward in the left and right direction in order to release the locking state between the engaging head 13a and the element locking portion 40.

[0038] Furthermore, as shown in Figure 5B, the minimum dimension of the relief space 43, i.e., the minimum distance L1 between the locking surface 41 and the flange 35, is set to be larger than the width dimension L2 of the fastener element 13 (length from the tip of the meshing head 13a to the bulging portion of the reversal part 13c).

[0039] In this embodiment, the material of the slider 30 is not particularly limited, and synthetic resins such as polyamide, polypropylene, and polyacetal, or metals such as aluminum alloys and zinc alloys can be used.

[0040] With the slide fastener 1 configured in this way, as shown in Figure 5A, when attempting to pull down the slider 30, the engaging head 13a of the fastener element 13 is housed and locked in the recess 44 at one of the element locking portions 40, thus forming a locking mechanism that holds the slider 30 in the stop position. Therefore, even if the slider 30 is pulled down further to separate the engaged fastener element 13, the engaging head 13a of the fastener element 13 remains locked to the locking surface 41 of the element locking portion 40, preventing the engaged fastener element 13 from separating. On the other hand, by pulling the fastener stringer 10 in the left-right direction, the slider 30 can be pulled down without the engaging head 13a of the fastener element 13 being locked to the locking surface 41 of the element locking portion 40, thus separating the engaged fastener element 13.

[0041] Furthermore, when engaging the left and right element rows 12, this is done by lifting a string (not shown) inserted through the string insertion hole 39 and pulling up the slider 30.

[0042] As described above, the slide fastener 1 of this embodiment does not require a spring member having a stop claw or a cover to house the spring member, and the locking mechanism that holds the slider 30 in the stop position can be constructed with a small number of parts.

[0043] Furthermore, since there is no need to attach parts such as pull tabs to the upper surface of the upper wing plate 31, the slider can be made thinner, increasing the design freedom of the slide fastener 1.

[0044] (Second Embodiment) Next, a slide fastener according to the second embodiment of the present invention will be described with reference to Figures 6 to 7B.

[0045] As shown in Figure 6, the slider 30A for the slide fastener in this embodiment is applied as the lower slider for a reverse-opening slide fastener, and is used, for example, to open and close the left and right front panels of a garment.

[0046] The reverse-opening slide fastener 1A includes an upper slider (not shown) and a lower slider 30A to allow opening and closing from both above and below. At the lower end of the element row 12 of one fastener stringer 10, there is a hinge bar that can be inserted into and removed from the upper slider and lower slider 30A when the upper slider and lower slider 30A are lowered to the lowest end of the reverse-opening slide fastener and their rear openings are in contact with each other. In addition, a box bar is attached to the lower end of the element row 12 of the opposing fastener stringer 10, with a stopper formed therein to prevent the lower slider 30A from coming loose in order to lock it at its lowest end.

[0047] Therefore, in the second embodiment, the direction in which the lower slider 30A slides to engage the left and right element rows 12 is backward, and the direction in which it slides to separate the left and right element rows 12 is forward.

[0048] Furthermore, the lower slider 30A of this embodiment does not have a string insertion hole in the upper wing plate 31 as in the first embodiment, and in plan view, it has the same shoulder side shape as the lower wing plate 32. On the other hand, the lower slider 30A, including the guide column 33, has substantially the same configuration as the slider 30 of the first embodiment.

[0049] Therefore, even in a reverse-opening slide fastener 1A using such a lower slider 30A, as shown in Figure 7A, when attempting to pull up the lower slider 30A, the engaging head 13a of the fastener element 13 is housed and locked in the recess 44 at one of the element locking portions 40, thus forming a locking mechanism that holds the slider 30A in the stop position. Consequently, when attempting to further pull up the lower slider 30A against the engaged fastener element 13, the engaging head 13a of the fastener element 13 is locked against the locking surface 41 of the element locking portion 40, thus preventing the engaged fastener element 13 from separating. On the other hand, as shown in Figure 7B, by pulling the left and right pair of fastener stringers 10, 10 in the left and right directions, the engaging head 13a of the fastener element 13 is not locked against the locking surface 41 of the element locking portion 40, allowing the lower slider 30A to be pulled up and the fastener element 13 to be separated. Furthermore, the lower slider 30A moves forward because the fastener stringers 10,10 press against the flanges 34,35, thereby allowing both the lower slider 30A and the upper slider to move forward.

[0050] (Third embodiment) Next, a slide fastener according to a third embodiment of the present invention will be described with reference to Figures 8 and 9.

[0051] Unlike the slider 30B of the first embodiment, the slide fastener 1B of this embodiment is suitably used in open products equipped with an opening / closing insert.

[0052] In this embodiment, the slider 30B has an element locking portion 40 on only one side (right side) of the guide column 33 in the left-right direction, while the other side (left side) does not have an element locking portion and is curved convexly to the rear end. The rest of the slider configuration is the same as in the first embodiment.

[0053] Figures 9(a) and (b) show a stringer separated, which has an element row 12 with a butterfly bar of a detachable insert at its rear end. At this time, as shown in Figure 9(a), the element row 12, which has a box bar and box body of a detachable insert at its rear end, passes through the separation passage 37b facing the left side of the slider 30B, which does not have an element locking portion.

[0054] Here, for example, in the case of the slider 30 of the first embodiment, as shown in Figure 9(b), when moving the slider 30 backward to the rear end of the element row 12, the element locking portion 40 of the slider 30 may lock with the meshing head 13a of the fastener element 13, potentially preventing the slider 30 from moving smoothly. On the other hand, in the case of the slider 30B of this embodiment, there is no element locking portion 40 on the left side of the guide column 33, so the slider 30B can be moved smoothly to the rear end of the element row 12.

[0055] As shown in Figure 8A, when attempting to pull down the slider 30B on the engaged fastener element 13, the engaging head 13a of the fastener element 13 engages with the locking surface 41 of the element locking portion 40 formed on the right side of the guide column 33 at the timing when the slider has moved at most one pitch of the fastener element 13, thus preventing the engaged fastener element 13 from separating. On the other hand, by pulling the fastener stringer 10 in the left-right direction, the slider 30 is pulled down without the engaging head 13a of the fastener element 13 engaging with the locking surface 41 of the element locking portion 40, and the engaged fastener element 13 separates.

[0056] Furthermore, the present invention is not limited to the embodiments described above, and can be modified, improved, and so on as appropriate.

[0057] For example, as shown in Figure 10, in the slider 30C for the slide fastener, the left and right element locking parts 40 are positioned differently in the front-to-back direction to correspond to a half-pitch difference between the left and right fastener elements 13. As a result, the locking mechanism operates on both the left and right fastener stringers 10, providing a stronger lock.

[0058] Furthermore, as shown in Figure 11, the slider 30D for the slide fastener has string insertion holes 39a that penetrate vertically at the same position in a plan view of the upper wing plate 31 and the lower wing plate 32 in front of the guide post 33. By passing a string (not shown) through these string insertion holes 39a and pulling up the slider 30D, it can be applied to products with a reversible design.

[0059] Furthermore, as shown in Figure 12, in the slider 30E for slide fasteners, there is no protrusion 42 at the rear of the guide column 33, and the locking surfaces 41 of the left and right element locking parts 40 are connected to each other. In other words, as long as the strength of the guide column 33 can be ensured, the element locking part 40 of the slider 30D may be configured without a protrusion 42.

[0060] In addition, as shown in Figure 13, in the slider 30F for the slide fastener, the front ends 34c and 35c of the flanges 34 and 35 are located in front of the rear end 42b of the guide post 33 in the front-rear direction. That is, as in the slider 30 of the first embodiment, when the front ends 34c and 35c of the flanges 34 and 35 are located behind the rear end 42b of the guide post 33 in the front-rear direction, it is easy to secure a clearance space 43 that allows the fastener stringer 10 to move outward in the left-right direction. On the other hand, as in this modified example, if the configuration allows the fastener stringer 10 to move outward in the left-right direction, the front ends 34c and 35c of the flanges 34 and 35 may be located in front of the rear end 42b of the guide post 33. Note that the front ends 34c and 35c of the flanges 34 and 35 may be located in front of the rear end 42b of the guide post 33, or they may be located at the same position in the front-rear direction.

[0061] As described above, the following matters are disclosed in this specification: (1) A pair of left and right fastener stringers, each having a row of elements with multiple fastener elements on the tape side edge of the fastener tape, A slider that slides along the aforementioned row of elements, A slide fastener having, The fastener element has a meshing head that engages with the fastener element on the mating side, The slider comprises an upper wing plate and a lower wing plate arranged opposite each other vertically, a guide post connecting the upper wing plate and the lower wing plate, and a pair of left and right flanges formed on both the left and right sides of at least one of the upper wing plate and the lower wing plate, extending from the rear end to the shoulder end of the slider. Between the upper and lower wing plates of the slider, an element guide path is formed which guides the element row, including a pair of separation passages separated to the left and right by the guide pillars, and a merging passage where the separation passages merge behind the separation passages. The guide post faces the separation passage of the element guide path and has an element locking portion into which the interlocking head of the fastener element is locked. The element locking portion has a rearward-facing locking surface that restricts the slider from moving backward when the meshing head is locked to the element locking portion. The separation passage has a relief space on the left-right outer side of the locking surface of the guide column that allows the fastener stringer to move outward in the left-right direction in order to release the locking state between the interlocking head and the element locking portion. Slide fastener. With this configuration, a locking mechanism that holds the slider in the stop position when attempting to pull it down can be constructed with a small number of parts.

[0062] (2) The front end of the flange is located behind the rear end of the guide column. (1) The slide fastener described above. This configuration allows for a larger clearance space, enabling the fastener stringer to be pulled and bent significantly from the left and right, and the engaged fastener elements to be separated.

[0063] (3) The front end of the flange is located at the same position as the rear end of the guide column, or in front of it, (1) The slide fastener described above. With this configuration, as soon as you start pulling the fastener stringer from side to side, you can immediately press the slider flange, allowing you to quickly separate the engaged fastener elements.

[0064] (4) The locking surface is formed inclined with respect to the left and right directions such that it becomes rearward as it moves outward in the left and right directions. A slide fastener as described in any of (1) to (3). With this configuration, when attempting to pull down the slider, the interlocking heads of the fastener elements can be securely locked onto the locking surface.

[0065] (5) The guide post has a projection that extends rearward from the locking surface at its intermediate position in the left-right direction, The element locking portion forms a recess with the locking surface and the left and right side surfaces of the protruding portion. A slide fastener as described in any of (1) to (4). This configuration allows for the formation of a pair of element locking parts while ensuring the strength of the guide post.

[0066] (6) The element locking portion is formed only on the left and right sides of the guide column facing the separation passage through which the row of elements having a butterfly rod is inserted. A slide fastener as described in any of (1) to (4). With this configuration, the slider can be moved smoothly over a row of elements having a box-shaped body at the rear end, and when attempting to pull the slider down, the interlocking heads of the fastener elements can be locked into the element locking portion.

[0067] (7) The pair of element locking portions formed on both the left and right sides of the guide column are formed offset in the front-rear direction by half a pitch of the fastener element. A slide fastener as described in any of (1) to (5). With this configuration, the locking mechanism operates on both the left and right zipper stringers, resulting in a stronger lock. [Explanation of Symbols]

[0068] 1,1A,1B Slide fasteners 10 Fastener Stringers 11 Fastener tape 11b Tape side edge 12-element sequence 13 fastener elements 13a Interlocking head Sliders for 30, 30A, 30B, 30C, 30D, 30E, 30F slide fasteners 31 Upper wing plate 32 Lower wing plate 33 Guidepost 34,35 Flange 37 Element Guideway 37a,37b Separation passage 37c merging passage 40 Element locking part 41 Locking surface 42 Protrusion 43 Escape Space 44 recess

Claims

1. A pair of left and right fastener stringers (10) are provided with a row of elements (12) having multiple fastener elements (13) on the tape side edge (11b) of the fastener tape (11), Sliders (30, 30A, 30B, 30C, 30D, 30E, 30F) that slide along the aforementioned row of elements (12), A slide fastener (1, 1A, 1B) having, The fastener element (13) has a meshing head (13a) that engages with the fastener element on the mating side, The slider (30, 30A, 30B, 30C, 30D, 30E, 30F) has an upper wing plate (31) and a lower wing plate (32) arranged opposite each other vertically, a guide post (33) connecting the upper wing plate and the lower wing plate, and a pair of left and right flanges (34, 35) formed on the left and right sides of at least one of the upper wing plate and the lower wing plate, extending from the rear end to the shoulder end of the slider. Between the upper and lower wing plates of the slider, an element guide path (37) is formed which guides the element row, including a pair of separation passages (37a, 37b) separated to the left and right by the guide column, and a merging passage (37c) where the separation passages merge behind the separation passages. The guide post (33) faces the separation passage of the element guide path and has an element locking portion (40) into which the interlocking head of the fastener element is locked. The element locking portion (40) has a rearward-facing locking surface (41) that restricts the slider from moving backward when the meshing head is locked to the element locking portion (40). The separation passages (37a, 37b) have relief spaces (43) provided on the left and right outer sides of the locking surfaces of the guide posts, When the pair of left and right fastener stringers are pulled in the left-right direction, the fastener stringers move outward in the left-right direction through the relief space, thereby releasing the locking state between the engaging head and the element locking portion (40). Slide fasteners (1, 1A, 1B).

2. The front ends (34c, 35c) of the flanges (34, 35) are located behind the rear end (42b) of the guide column. The slide fastener (1, 1A, 1B) according to claim 1.

3. The front ends (34c, 35c) of the flanges (34, 35) are located at the same position as or in front of the rear end (42b) of the guide column in the front-rear direction. The slide fastener (1, 1A, 1B) according to claim 1.

4. The locking surface (41) is formed to be inclined with respect to the left-right direction such that it becomes rearward as it moves outward in the left-right direction. A slide fastener (1, 1A, 1B) according to any one of claims 1 to 3.

5. The guide post has a projection (42) that protrudes rearward from the locking surface at its midpoint in the left-right direction. The element locking portion (40) forms a recess (44) with the locking surface (41) and the left and right side surfaces (42a) of the protruding portion (42). The slide fastener (1,1A) according to claim 1.

6. The element locking portion (40) is formed only on the left and right sides of the guide column facing the separation passage through which the row of elements having a butterfly rod is inserted. The slide fastener (1B) according to claim 1.

7. The pair of element locking portions (40) formed on both the left and right sides of the guide column are formed offset in the front-rear direction by half a pitch of the fastener element. The slide fastener (1,1A) according to claim 1.

Images