Split top stop

Abstract

The present invention provides a split top stop that enables a slider to easily pass through the gap between an upper top stop and a lower top stop. The present invention relates to a split top stop (1) arranged on one of the left and right zipper longitudinal beams (40a, 40b) in a zipper (100) including left and right zipper longitudinal beams (40a, 40b) and a slider (50), wherein the slider (50) is used to open and close the left and right zipper longitudinal beams (40a, 40b). The split top stop (1) comprises an upper top stop (10) and a lower top stop (20) that is arranged below the upper top stop (10) with a gap (30) relative to the upper top stop and can pass through a chain tooth guide path (54) of the slider (50). The split top stop (1) can install the slider (50) on or remove it from one of the zipper longitudinal beams (40b) through the gap (30). The gap (30) is defined by the lower side surface (13a) of the upper upper stop (10) and the upper side surface (23a) of the lower upper stop (20). The lower side surface (13a) of the upper upper stop (10) and the upper side surface (23a) of the lower upper stop (20) gradually separate from each other toward the front side in the front-back direction, thereby expanding the gap (30) toward the front side in the front-back direction.

Description

Technical Field

[0001] The present invention relates to a split top stop, and more particularly, to a split top stop in which a top stop for limiting upward movement of a slider in a zipper is divided into an upper top stop and a lower top stop. Background Art

[0002] In zippers, the top stops that restrict the upward movement of the slider are typically located on each of the left and right zipper stringers. Furthermore, U.S. Patent No. 6,327,755 (Patent Document 1) and Chinese Utility Model No. 2,568,022 (Patent Document 2) disclose a split-type top stop. This split-type top stop is designed to separate the top stop of one of the left and right zipper stringers into an upper top stop and a lower top stop, allowing the slider to be installed or removed through the gap between the upper and lower top stops. This split-type top stop offers the advantage of allowing replacement of the slider in the event of a malfunction.

[0003] The upper and lower top stops of the split-type top stops disclosed in Patent Documents 1 and 2 are both plate-shaped, comprising a flat surface on the front side in the front-back direction (perpendicular to the longitudinal and width directions of the zipper stringer, respectively), a flat back side opposite the surface in the front-back direction, and side surfaces between the front and back sides. The side surfaces are perpendicular to the zipper tape of the zipper stringer. The lower side surface of the upper top stop and the upper side surface of the lower top stop, which substantially define the gap between the upper and lower top stops, are also perpendicular to the zipper tape. Furthermore, the gap between the upper and lower top stops is set to the minimum distance necessary for the slider to enter and exit, preventing it from accidentally detaching from the zipper stringer during normal zipper use. Consequently, there is a problem: when the slider passes through the gap between the upper and lower top stops, it is easier to pass if the slider's upper and lower wings are parallel to the zipper tape, but it is more difficult to pass if the slider's upper and lower wings are tilted relative to the zipper tape. Therefore, it is necessary to arrange the posture of the slider so that the upper and lower wing plates are parallel to the zipper tape when the slider goes in and out.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: U.S. Patent No. 6,327,755;

[0007] Patent Document 2: Chinese Utility Model Specification No. 2568022. Summary of the Invention

[0008] The present invention is developed in view of the above problems, and its object is to provide a split top stop that allows a slider to easily pass through the gap between the upper top stop and the lower top stop.

[0009] Problems to be solved by the invention

[0010] In order to solve the above problems, according to the present invention, a split top stop is provided, which is arranged on one of the left and right zipper longitudinal beams of a zipper including left and right zipper longitudinal beams and a slider, and the slider is used to open and close the left and right zipper longitudinal beams, characterized in that it comprises an upper top stop and a lower top stop arranged below the upper top stop with a gap relative to the upper top stop and capable of passing through the chain tooth guide path of the slider, through which the slider can be installed on or removed from one of the zipper longitudinal beams, the gap being defined by the lower side surface of the upper top stop and the upper side surface of the lower top stop, and the lower side surface of the upper top stop and the upper side surface of the lower top stop gradually separate from each other toward the front and back directions, thereby expanding the gap toward the front side in the front and back directions.

[0011] In the present invention, the gap through which the slider passes during installation and removal is defined by the lower side of the upper top stop and the upper side of the lower top stop. The lower side of the upper top stop and the upper side of the lower top stop gradually separate from each other toward the front side in the front-back direction, thereby increasing the gap toward the front side in the front-back direction. In other words, the gap between the lower side of the upper top stop and the upper side of the lower top stop substantially increases in the vertical direction from the zipper tape side toward the front side away from the zipper tape. Thus, by setting the gap to the minimum required, the slider can easily pass between the lower side of the upper top stop and the upper side of the lower top stop when installing and removing the slider from one of the zipper stringers, even if the upper and lower wings of the slider are tilted relative to the zipper tape.

[0012] In one embodiment of the present invention, the lower side surface of the upper top stop and the upper side surface of the lower top stop are curved surfaces that protrude outward of the upper top stop and the lower top stop, respectively. The lower side surface of the upper top stop being a curved surface that protrudes outward of the upper top stop means that the lower side surface is a curved surface that protrudes in a direction extending from the center of gravity of the upper top stop in the extension direction. Furthermore, the upper side surface of the lower top stop being a curved surface that protrudes outward of the lower top stop means that the upper side surface is a curved surface that protrudes in a direction extending from the center of gravity of the lower top stop in the extension direction. Figure 3 The arrows indicate the extension direction parallel to the zipper tape. The lower side of the upper top stop and the upper side of the lower top stop are curved surfaces, with the gap between them gradually increasing toward the front side in the back-to-front direction and protruding in the extension direction. Therefore, when installing or removing the slider from one of the zipper stringers through the gap, the slider's flange slides on the convexly curved lower side of the upper top stop and the upper side of the lower top stop, respectively, making it easier to guide the slider through the gap.

[0013] In one embodiment of the present invention, the cross-sections of the upper top stop and the lower top stop, which are parallel to the zipper tape, gradually decrease from the zipper tape side toward the front side in the front-back direction. Since the cross-sections of the upper top stop and the lower top stop, which are parallel to the zipper tape, gradually decrease toward the front side in the front-back direction, the upper top stop and the lower top stop each include a side surface that is not perpendicular to the zipper tape.

[0014] In one embodiment of the present invention, the circumferential side surface of the upper top stop including the lower side surface is a curved surface that protrudes outward from the upper top stop. In this case, the circumferential side surface of the upper top stop is not perpendicular to the zipper tape, and the entire side surface of the upper top stop is rounded. In addition, in one embodiment of the present invention, the circumferential side surface of the lower top stop including the upper side surface is a curved surface that protrudes outward from the lower top stop. In this case, the circumferential side surface of the lower top stop is not perpendicular to the zipper tape, and the entire side surface of the lower top stop is rounded. Furthermore, when the cross-sections of the upper top stop and the lower top stop parallel to the zipper tape gradually decrease toward the front side in the front-back direction, and when the circumferential side surfaces of the upper top stop and the lower top stop are curved surfaces that protrude outward, the upper top stop and the lower top stop are rounded as a whole on the front side of the zipper tape in the front-back direction.

[0015] In one embodiment of the present invention, the lower side surface of the upper top stop is inclined downward from one end of one side in the left-right direction to one end of the other side in the left-right direction, and the lower side surface includes a first inclined surface on one side in the left-right direction, a second inclined surface on the other side in the left-right direction with an inclination angle different from that of the first inclined surface, and a recessed portion recessed upward between the first inclined surface and the second inclined surface. By providing a recessed portion between the first inclined surface and the second inclined surface of the lower side surface of the upper top stop, when the slider is mounted on one of the zipper longitudinal beams by providing the minimum gap between the upper top stop and the lower top stop, the flange of the slider (refer to Figure 8 The upper end of the mark 55a) falls into the recess, so that the slider rotates around the upper end of the flange falling into the recess (refer to Figure 8 Furthermore, since the lower side surface of the upper top stop faces one side in the left-right direction and is inclined upward, the vertical distance between the upper top stop and the lower top stop is increased toward one side in the left-right direction, making it easier for the slider to pass through the gap from one side to the other.

[0016] In one embodiment of the present invention, the curvature radius R1 of the upper side surface of the lower top stop is greater than or equal to 0.6 mm and less than or equal to 2.2 mm. The lower side surface of the upper top stop and the upper side surface of the lower top stop are curved surfaces that gradually separate from each other toward the front and back directions and protrude toward the outer sides of the upper top stop and the lower top stop. Figure 10If the curvature radius R1 of the upper side surface 23a of the lower upper stop 20 is set to be less than 0.6 mm, the flange of the slider (refer to Figure 8 Symbol 55a) is difficult to pass through the gap between the lower side of the upper stop and the upper side of the lower stop. In addition, the lower side stop is formed to wrap the first chain tooth at the upper end of the chain tooth row, but if R1 is greater than 2.2mm, the lower side stop is difficult to wrap the first chain tooth.

[0017] Effects of the Invention

[0018] In the present invention, the spacing between the lower side of the upper top stop and the upper side of the lower top stop gradually increases toward the front side in the front-back direction, thereby increasing the gap on the front side in the front-back direction. Thus, by setting the minimum required gap, when attaching or removing the slider from one of the zipper stringers, the slider can easily pass between the lower side of the upper top stop and the upper side of the lower top stop, even if the upper and lower wings of the slider are tilted relative to the zipper tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a plan view showing the upper portion of a zipper having a split top stop according to the present invention cut in the longitudinal direction (upper and lower directions);

[0020] Figure 2 is a perspective view showing a cutaway portion of the right zipper stringer including the split top stop;

[0021] Figure 3 This is a plan view showing a section of the right zipper stringer including the split top stop;

[0022] Figure 4 is a bottom view showing a cutaway area of ​​the right zipper stringer including the split top stop;

[0023] Figure 5 is a side view showing a section of the right zipper stringer including the split top stop;

[0024] Figure 6 This is a plan view illustrating the process of attaching the slider to the right zipper stringer;

[0025] Figure 7 This is a plan view illustrating the process of attaching the slider to the right zipper stringer;

[0026] Figure 8 This is a plan view illustrating the process of attaching the slider to the right zipper stringer;

[0027] Figure 9 This is a plan view illustrating the process of attaching the slider to the right zipper stringer;

[0028] Figure 10 It is along Figure 3 A cross-sectional view of the split top stop taken along line AA, with the back portion of the upper top stop and the zipper tape omitted. DETAILED DESCRIPTION

[0029] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the described embodiments, and appropriate changes and the like can be made within the scope of protection of the claims and the scope of equivalents. Figure 1 This is a plan view showing the upper portion of a zipper 100 having a split top stop 1 according to the present invention, cut in the longitudinal direction (vertical direction). In this specification, unless otherwise specified, "upper" in the zipper 100 and the split top stop 1 refers to the upper portion of the zipper 100 in the longitudinal direction, and "lower" refers to the lower portion in the longitudinal direction.

[0030] The zipper 100 includes a pair of longitudinally long left and right zipper stringers 40a, 40b, and a slider 50 that can open and close the left and right zipper stringers 40a, 40b. The left and right zipper stringers 40a, 40b include left and right zipper tapes 41 and an element array 42 consisting of one or more rows of elements 42a attached to opposing edges of the left and right zipper tapes 41. Figure 1 The chain element array 42 shown is formed of a coiled monofilament made of a thermoplastic resin such as polyamide or polyester, but is not limited thereto. The chain element array 42 may also be composed of a plurality of chain elements 42a made of metal or the like. A core rope 43 is provided on the relative edges of the surface of each zipper tape 41. The core rope 43 is used to improve the installation strength of the chain element 42a and the upper stops 1 and 2 described later. The thickness of the core rope 43 is greater than the thickness of the zipper tape 41, so the core rope 43 protrudes from the surface of the zipper tape 41. A split upper stop 1 is provided adjacent to the upper end of the chain element array 42 on the right side zipper longitudinal beam (hereinafter referred to as the "right longitudinal beam") 40b. An unsplit upper stop 2 is provided adjacent to the upper end of the chain element array 42 on the left side zipper longitudinal beam 40a. The split top stop 1 and the split top stop 2 are formed by, for example, injection molding or extrusion molding a thermoplastic resin such as nylon, polyacetal, polyamide, polypropylene, or polybutylene terephthalate onto the zipper tape 41, but are not limited thereto. The split top stop 1 and the split top stop 2 are arranged across the core cord 43 of the opposite edge portions of the zipper tape 41 in the left-right direction. Figure 1 In the figure, the insert tube and insert box provided below the zipper 100 are omitted. When the user moves the slider 50 upward, the element rows 42 of the left and right zipper stringers 40a and 40b close. When the slider 50 is moved downward, the element rows 42 of the left and right zipper stringers 40a and 40b open. The split top stop 1 and top stop 2 restrict further upward movement of the slider 40.

[0031] The slider 50 includes an upper wing plate 51 and a lower wing plate 52 (see Figure 6 etc.), and the guide column 53 connecting the upper and lower wing plates 51 and 52 (see Figure 6 A Y-shaped element guide path 54 is defined between the upper and lower wing plates 51 and 52 (see Figure 6 The tooth guide path 54 is opened to the rear opening 54a of the slider 50 and to the two adjacent shoulder openings 54b on the left and right of the guide post 53. The upper wing plate 51 and the lower wing plate 52 include flanges 55 (55a) for determining the width of the tooth guide path 54 in the left and right directions (see Figure 6 The flange 55 constrains the fastener element 42 a within the fastener element guide path 54 , preventing the fastener tape 41 from escaping from the gap between the flanges 55 of the upper and lower wing plates 51 and 52 to the outside of the fastener element guide path 54 .

[0032] In the zipper 100, the slider 50 is lowered to its lower end, the unillustrated insert tube is removed from the insert box, and the insert tube is pulled upward through the element guide 54 of the slider 50, thereby separating the left zipper stringer 40a from the right stringer 40b. In this state, the slider 50 remains on the right stringer 40b. In this state, the slider 50 can be removed from the right stringer 40b using the split top stop 1 as described below. Furthermore, a new or repaired slider 50 can be installed on the right stringer 40b using the split top stop 1.

[0033] Figures 2 to 5 The diagrams are perspective, plan, bottom, and side views showing a region of the right longitudinal member 40b including the split top stop 1 cut away. Unless otherwise specified, the front-to-back direction of the split top stop 1 refers to a direction (the thickness direction of the right longitudinal member 40b) perpendicular to both the vertical direction (the length direction of the right longitudinal member 40b) and the horizontal direction (the width direction of the right longitudinal member 40b). The front side of the front-to-back direction refers to the side away from the zipper tape 41 of the right longitudinal member 40b toward the upper wing plate 51 of the slider 50, and the back side of the front-to-back direction refers to the side away from the zipper tape 41 toward the lower wing plate 52 of the slider 50.

[0034] The split top stop 1 includes an upper top stop 10 and a lower top stop 20 that is separated from the upper top stop 10 by a gap 30 and arranged below it. The upper top stop 10 cannot pass through the chain element guide path 54 of the slider 50. The lower top stop 20 can just pass through the chain element guide path 54. In other words, the thickness of the lower top stop 20 in the front-back direction is slightly smaller than the gap between the upper wing plate 51 and the lower wing plate 52 of the slider 50. In addition, its size is set to be able to pass between the rear opening 54a of the chain element guide path 54 and one of the (right) shoulder openings 54b. On the right longitudinal beam 40b that is separated from the left zipper longitudinal beam 40a, the slider 50 can be installed or removed through the gap 30 between the upper top stop 10 and the lower top stop 20. Hereinafter, the gap 30 is referred to as the "slider channel 30." The slider channel 30 is set to a minimum interval allowing the slider 50 to enter and exit, so that the slider 50 will not be inadvertently separated from the right longitudinal beam 40b by the split top stop 1 during normal use of the zipper 100.

[0035] The upper top stop 10 has a surface portion 10A that protrudes from the zipper tape 41 of the right longitudinal beam 40b to the front side, and a back portion 10B that protrudes to the back side of the zipper tape 41. The lower top stop 20 is formed so as to wrap around the fastener element 42a at the upper end of the right longitudinal beam 40b during molding. Therefore, the lower top stop 20 has a high adhesion strength to the zipper tape 41. In contrast, the upper top stop 10 does not wrap around the fastener element 42a. Therefore, by Figure 5 ) forms a back surface portion 10B connected to the surface portion 10A to improve the adhesion strength of the upper stop 10 to the zipper tape 41. Figure 3 Etc., about one-third of the left side of the surface portion 10A and the back portion 10B in the left-right direction deviates from the zipper tape 41 to the left, and about two-thirds of the right side is arranged on the zipper tape 41. In addition, the surface portion 10A and the back portion 10B are arranged so that the core rope 43 of the zipper tape 41 is approximately located in the middle part in the left-right direction. The back portion 10B is directly connected to the upper approximately two-thirds of the surface portion 10A or is connected through the zipper tape 41. Therefore, the lower approximately one-third of the surface portion 10A protrudes downward from the back portion 10B. Hereinafter, for convenience, the boundary between the surface portion 10A and the back portion 10B is referred to as a boundary surface 11a. The surface portion 10A has a base surface 11 including a boundary surface 11a with the back portion 10B, a top surface 12 that is away from the base surface 11 on the front side in the front-back direction, and a peripheral side surface 13 extending between the base surface 11 and the top surface 12. According to Figure 5 It can be seen that the base surface 11 of the surface portion 10A is substantially provided along the back surface 41a of the fastener tape 41. Figure 5 and Figure 10The surface portion 10A is flat, but strictly speaking, it is a curved surface that slightly protrudes toward the front side in the front-back direction (or the extension direction of the upper stop 10). The cross section of the surface portion 10A parallel to the zipper tape 41 gradually decreases from the base surface 11 to the top surface 12. The peripheral side surface 13 is curved and extends from the base surface 11 side to the top surface 12 side in the front-back direction. In addition, the peripheral side surface 13 is toward the outside of the surface portion 10A, that is, the extension direction of the upper stop 10 (refer to Figure 3 The extension direction of the upper stop 10 is the direction extending outward from the center of gravity of the upper stop 10, and the extension direction of the lower stop 20 is the direction extending outward from the center of gravity of the lower stop 20. It should be noted that Figure 3 , arrows extending outward from respective center portions of the upper top stop 10 and the lower top stop 20 indicate a portion of the extending direction of each of the upper top stop 10 and the lower top stop 20 on a plane parallel to the fastener tape 41 .

[0036] The peripheral side surface 13 of the surface portion 10A includes a lower side surface 13a for defining the upper side of the slider channel 30, a stop surface 13b adjacent to the right side of the lower side surface 13a, a left side surface 13c adjacent to the left side of the lower side surface 13a, and an upper side surface 13d adjacent to the upper sides of the left side surface 13c and the stop surface 13b. The lower side surface 13a is inclined upward from the right end adjacent to the stop surface 13b to the left end adjacent to the left side surface 13c. The stop surface 13b extends upward from the right end adjacent to the lower side surface 13a and then to the right to form a substantially The left side surface 13c extends upward from the lower end adjacent to the lower side surface 13a. The upper side surface 13d extends from the left end adjacent to the left side surface 13c to the right, and then extends in a curved shape toward the right end adjacent to the stop surface 13b and to the lower right. The lower side surface 13a, the stop surface 13b, the left side surface 13c and the upper side surface 13d extend in a curved shape not only in the front and back directions, but also in the up and down directions and the left and right directions. Therefore, it can be said that the surface portion 10A as a whole is a shape with rounded corners. Therefore, it is not easy to scratch the user's fingers, clothes, etc. In the normal state where the left and right zipper longitudinal beams 40a and 40b are not separated, the stop surface 13b is a part used to block the slider 50 moving upward, and actually restricts the slider 50 from moving further upward.

[0037] The lower side surface 13a of the surface portion 10A slopes downward from its left end to its right end. The lower side surface 13aa includes a first inclined surface 13aa on the left side, a second inclined surface 13ab on the right side, and a slightly upwardly recessed portion 13ac between the first and second inclined surfaces 13aa and 13ab. The angle of inclination of the first inclined surface 13aa, which is tilted downward and rightward relative to the left-right direction, is set to be greater than the angle of inclination of the second inclined surface 13ab, which is tilted downward and rightward relative to the left-right direction. The recessed portion 13ac is located approximately midway in the left-right direction of the left portion of the surface portion 10A, which deviates to the left from the fastener tape 41. The left-right length of the recessed portion 13ac from the left first inclined surface 13aa is approximately one-fourth of the left-right length of the recessed portion 13ac from the right second inclined surface 13ab.

[0038] The back portion 10B has a bottom surface 14 that is away from the boundary surface 11a with the front portion 10A toward the back side in the front-back direction, and a peripheral side surface 15 that extends between the boundary surface 11a and the bottom surface 14. Figure 5 The circumferential side surface 15 is flat in the middle, but strictly speaking, it is a curved surface that slightly protrudes toward the back side in the front-back direction (or the extension direction of the upper stop 10). The cross section of the back portion 10B parallel to the fastener tape 41 gradually decreases from the boundary surface 11a to the bottom surface 14. The peripheral side surface 15 extends in a curved shape from the boundary surface 11a side to the bottom surface 14 side in the front-back direction, and also extends in a curved shape in the up-down direction and the left-right direction. In addition, the peripheral side surface 15 is the extension direction of the upper stop 10 toward the outside of the back portion 10B (refer to Figure 3 Further, according to Figure 4 It can be seen that the portion of the back surface 10B along the boundary surface 11a is the left end portion ( Figure 4 The left end on the drawing) slightly to the lower left ( Figure 4 Therefore, it can be said that the back portion 10B is rounded as a whole.

[0039] The lower top stop 20 protrudes from the zipper tape 41 of the right longitudinal beam 40b only toward the front side in the front-back direction. Approximately one-third of the left side portion of the lower top stop 20 in the left-right direction deviates to the left from the zipper tape 41, while approximately two-thirds of the right side portion is positioned on the zipper tape 41. The lower top stop 20 has a base surface 21 substantially extending along the back side 41a of the zipper tape 41, a top surface 22 extending away from the base surface 21 toward the front side in the front-back direction, and a peripheral side surface 23 extending between the base surface 21 and the top surface 22. The top surface 22 is a curved surface that protrudes slightly toward the front side in the front-back direction (or the direction in which the lower top stop 20 extends). The cross section of the lower top stop 20, parallel to the zipper tape 41, from the base surface 21 to the top surface 22, gradually narrows toward the front side in the front-back direction. The peripheral side surface 23 extends in a curved shape from the base surface 21 toward the top surface 22 in the front-back direction. In addition, the peripheral side surface 23 is directed toward the outer side of the lower upper stop 20, that is, in the extension direction (see Figure 3 The curved surface is protruding from the center (arrow).

[0040] The circumferential side surface 23 includes an upper side surface 23a for defining the lower side of the slider channel 30, a right side surface 23b adjacent to the right side of the upper side surface 23a, a left side surface 23c adjacent to the left side of the upper side surface 23a, and a lower side surface 23d adjacent to the lower sides of the left side surface 23c and the right side surface 23b. The upper side surface 23a is slightly inclined downward to the right from the left end adjacent to the left side surface 23c, and then further extends to the lower right in a curved shape and connects to the right side surface 23b. The right side surface 23b extends generally in the vertical direction from top to bottom. The left side surface 23c extends obliquely toward the lower left from the upper end adjacent to the upper side surface 23a to the lower end adjacent to the lower side surface 23d. The lower side surface 23d extends obliquely toward the upper left from the left end adjacent to the left side surface 23c to the right end adjacent to the right side surface 23b. The upper side surface 23a, right side surface 23b, left side surface 23c, and lower side surface 23d are curved not only in the front-to-back direction but also in the vertical and horizontal directions. Therefore, the lower top stop 20 has a rounded shape as a whole. This makes it less likely to scratch a user's fingers or clothing.

[0041] The slider passage 30 is substantially defined by the lower side surface 13 a of the upper top stop 10 and the upper side surface 23 a of the lower top stop 20 . Figure 10 It is along Figure 3 AA line split top stop 1 cross-sectional view, wherein the back side portion 10B of the upper top stop 10 and the zipper tape 41 are omitted. Figure 3 The AA line passes through the center of gravity of the upper top stop 10 and the lower top stop 20. Figure 10The cross-sections of the lower side surface 13a of the upper top stop 10 and the upper side surface 23a of the lower top stop 20 shown are cross-sections substantially along one of the extension directions of the upper top stop 10 and the lower top stop 20 in a plane parallel to the zipper tape 41. The lower side surface 13a and the upper side surface 23a gradually separate from each other from the respective base surfaces 11 and 21 sides toward the front side in the front-back direction. As a result, the vertical spacing of the slider channel 30 gradually increases from the zipper tape 41 side toward the front side in the front-back direction. In addition, as described above, the lower side surface 13a and the upper side surface 23a are curved surfaces protruding in the extension direction. Refer to Figure 10 The curvature radius R1 of the upper side surface 23a of the lower top stop 20 is set to be greater than 0.6 mm and less than 2.2 mm. If the curvature radius R1 of the upper side surface 23a is less than 0.6 mm, the resin on the upper side surface 23a will interfere with the slider 50 when it passes through the slider channel 30, and the slider 50 will not be able to pass smoothly through the slider channel 30. On the other hand, if the curvature radius R1 is greater than 2.2 mm, it will be difficult for the lower top stop 20 to wrap around the coupling element (first coupling element) 42a at the upper end of the right longitudinal beam 40b. The curvature radius R2 of the lower side surface 13a of the upper top stop 10 is not particularly limited and can be set to be approximately the same as the curvature radius R1 of the upper side surface 23a. As described above, the lower side surface 13a of the upper top stop 10 and the upper side surface 23a of the lower top stop 20 are convex curved surfaces. When the slider 50 is installed on or removed from the right longitudinal beam 40b through the slider passage 30 set to the minimum required value, even if the upper and lower wings 51, 52 of the slider 50 are tilted relative to the zipper tape 41, the right flange 55a of the slider 50 (see Figure 6 The slider 50 slides on the lower side 13a or the upper side 23a, and the slider channel 30 can be easily passed through. Furthermore, the vertical spacing of the slider channel 30 is expanded toward the left by the second inclined surface 13ab of the upper side 23a, and the vertical spacing of the slider channel 30 is further expanded toward the left by the first inclined surface 13aa. Therefore, the slider 50 can easily pass through the slider channel 30 from left to right.

[0042] Figures 6 to 9 This is a plan view illustrating the process of installing the slider 50 to the right longitudinal beam 40b through the slider channel 30, in which the upper wing plate 51 is omitted and the right longitudinal beam 40b is cut open. When the slider 50 is installed on the right longitudinal beam 40b, first, the surface of the slider 50 parallel to the upper and lower wing plates 51 and 52 (hereinafter referred to as the "slider surface") is set to be roughly parallel to the zipper tape 41, and the center line CL of the slider 50 is tilted about 60 degrees relative to the upper and lower lines (not shown) set along the upper and lower directions of the right longitudinal beam 40b, and at the same time, the rear opening 54a of the slider 50 is close to the lower upper stop 20. Figure 6At the time point of , the lower end of the right flange 55a of the slider 50 enters the slider channel 30, and the lower top stop 20 partially enters the chain tooth guide path 54 of the slider 50 from the rear opening 54a. At this time, the lower side surface 13a of the upper top stop 10 and the upper side surface 23a of the lower top stop 20 are convex curved surfaces that are curved in the front-back direction, the left-right direction, and the up-down direction, and the lower side surface 13a is inclined to the upper left, so the right flange 55a can easily pass through the slider channel 30. Furthermore, since the mutual spacing between the lower side surface 13a and the upper side surface 23a gradually expands toward the front side in the front-back direction, even if the slider surface is inclined relative to the zipper tape 41, the right flange 55a of the slider 50 can easily and smoothly pass through the slider channel 30, and the right flange 55a slides on the lower side surface 13a or the upper side surface 23a and is guided to the right side of the slider channel 30. If Figure 6 Push the pull head 50 at the time point, then Figure 7 As shown, the right flange 55a of the slider 50 enters the slider channel 30 more deeply, and the lower top stop 20 as a whole enters the element guide path 54. At this point in time, the upper half of the right flange 55a is along the first inclined surface 13aa of the lower side surface 13a of the upper top stop 10.

[0043] If Figure 7 Further push the slider 50 at the time point, then Figure 8 As shown, the upper end of the right flange 55a of the slider 50 falls into the concave portion 13ac of the lower side surface 13a of the upper top stop 10. The slider 50 is rotated with the upper end of the right flange 55a falling into the concave portion 13ac as the center so that the center line CL approaches the upper and lower lines of the right longitudinal beam 40b (refer to Figure 8 Thus, if Figure 9 As shown, the right flange 55a of the slider 50 passes through the slider channel 30, and the lower top stop 20 approaches the right shoulder 54b of the element guide path 54. The slider 50 is then moved downward. As a result, the lower top stop 20 exits the slider 50 through the right shoulder 54b, and the element row 42 connected below the lower top stop 20 is inserted into the element guide path 54 from the rear opening 54a of the slider 50. This completes the installation of the slider 50 on the right longitudinal beam 40b. By reversing these steps, the slider 50 can be removed from the right longitudinal beam 40b.

[0044] Explanation of symbols:

[0045] 1 split up stop;

[0046] 2. Upper stop;

[0047] 10 Upper side top stop;

[0048] 10A surface portion;

[0049] 10B dorsal face;

[0050] 11 base surface;

[0051] 11a Boundary surface;

[0052] 12 top surface;

[0053] 13 weeks lateral;

[0054] 13a lower lateral aspect;

[0055] 13aa first inclined surface;

[0056] 13ab second inclined surface;

[0057] 13ac recess;

[0058] 20 lower side top stop;

[0059] 21 base surface;

[0060] 22 top surface;

[0061] 23 weeks lateral;

[0062] 23a upper lateral aspect;

[0063] 30 clearance (slider channel);

[0064] 40a Zipper stringer on the left side;

[0065] 40b right side zipper stringer;

[0066] 41 zipper tape;

[0067] 42 chain teeth;

[0068] 42a chain teeth;

[0069] 43 core rope;

[0070] 50 pull head;

[0071] 51 upper wing plate;

[0072] 52 lower wing panel;

[0073] 53 guide post;

[0074] 54 chain tooth guide path;

[0075] 54a posterior mouth;

[0076] 54b shoulder opening;

[0077] 55 flange;

[0078] 55a right flange;

[0079] 100 zippers.

Claims

1. A split top stop (1), which is arranged on one of the left and right zipper longitudinal beams (40a, 40b) in a zipper (100) including left and right zipper longitudinal beams (40a, 40b) and a slider (50), wherein the slider (50) is used to open and close the left and right zipper longitudinal beams (40a, 40b), characterized in that: The split top stop (1) comprises an upper top stop (10) and a lower top stop (20) which is arranged below the upper top stop (10) with a gap (30) therebetween and can pass through the chain tooth guide path (54) of the slider (50). The slider (50) can be installed on or removed from one of the zipper stringers (40b) through the gap (30). The gap (30) is defined by the lower side surface (13a) of the upper side top stop (10) and the upper side surface (23a) of the lower side top stop (20). The lower side surface (13a) of the upper upper stop (10) and the upper side surface (23a) of the lower upper stop (20) gradually separate from each other toward the front side in the front-back direction, thereby expanding the gap (30) toward the front side in the front-back direction.

2. The split top stop according to claim 1, characterized in that: The lower side surface (13a) of the upper top stop (10) and the upper side surface (23a) of the lower top stop (20) are curved surfaces protruding toward the outer sides of the upper top stop (10) and the lower top stop (20), respectively.

3. The split top stop according to claim 1 or 2, characterized in that: The cross-sections of the upper top stop (10) and the lower top stop (20) parallel to the zipper tape (41) are gradually reduced from the side of the zipper tape (41) toward the front side in the front-back direction.

4. The split top stop according to any one of claims 1 to 3, characterized in that: The peripheral side surface (13) of the upper top stop (10) including the lower side surface (13a) is a curved surface protruding toward the outside of the upper top stop (10).

5. The split top stop according to any one of claims 1 to 4, characterized in that: The peripheral side surface (23) of the lower upper stop (20) including the upper side surface (23a) is a curved surface protruding toward the outside of the lower upper stop (20).

6. The split top stop according to any one of claims 1 to 5, characterized in that: The lower side surface (13a) of the upper stop (10) is inclined downward from one end of one side in the left-right direction to one end of the other side in the left-right direction, and the lower side surface (13a) includes a first inclined surface (13aa) on one side in the left-right direction, a second inclined surface (13ab) on the other side in the left-right direction having an inclination angle different from that of the first inclined surface (13aa), and a recessed portion (13ac) that is recessed upward between the first inclined surface (13aa) and the second inclined surface (13ab).

7. The split top stop according to claim 2, characterized in that: The curvature radius R1 of the upper side surface (23a) of the lower upper stop (20) is greater than or equal to 0.6 mm and less than or equal to 2.2 mm.

Images