Slider for slide fastener

Abstract

A slider (100) for a slide fastener comprises: a slider body (1) in which is formed an insertion hole (14) extending so as to form a cavity in a connecting column (9); a pull (2) mounted on the slider body (1) so as to be pivotable on an upper wing plate (7); a claw member (3) having a claw end part (29) that can protrude into an element passage (11) via a claw hole (17) penetrating the upper wing plate (7); a spring member (4); and a cover (5) having an inner surface that can contact the spring member (4). The spring member (4) comprises: a front end part (30) that is inserted into the insertion hole (14); and a rear end part (31) that has a contact part (31a) that contacts the claw member (3) at a position rearward of an insertion port (13).

Description

Slider for Slide Fastener

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

[0002] Sliders generally include a slider body and a pull tab. The slider body interacts with coupling elements provided on the facing sides of two cooperating tapes to open and close a zipper or slide fastener. When the pull tab is pulled to move the slider body, a generally Y-shaped guide path located between the upper and lower wing plates of the slider body engages with the rows of opposing coupling elements of the tape. When the slider body is moved in the opposite direction, the Y-shaped guide path separates the rows of opposing coupling elements.

[0003] To prevent the slide fastener from accidentally opening and closing, some sliders have a locking function. When the pull tab is in at least one specific orientation, a locking member engages with the coupling elements of at least one of the tapes to prevent the slider from moving. When the pull tab is not in the one specific orientation (e.g., raised so as to be substantially perpendicular to the tape), the locking member does not engage with the coupling elements of the tape and the slider is movable.

[0004] Sliders having this type of locking function are sometimes referred to as "semiautomatic" sliders.

[0005] FIG. 10 is a cross-sectional view of a conventional semiautomatic slider. In the slider described in Patent Document 1, as shown in FIG. 10, a metallic elastic locking pin 116 having a claw portion 128 that engages with an element is used. In this slider 110, when the pull tab 112 is in a predetermined position, the claw portion 128 of the elastic locking pin 116 engages with the element to exhibit a locking function.

[0006] U.S. Patent Application Publication No. 2012 / 0260469 A1 International Publication No. 2023 / 157146

[0007] The elastic lock pin 116 described in Patent Document 1 creates a locked or unlocked state through elastic deformation caused by contact with and cooperation with the pull tab 112. As a result, the elastic lock pin 116 has limited freedom in terms of shape, and it was sometimes difficult to make adjustments such as increasing the thickness of the elastic lock pin 116 to improve the locking strength against external forces in the front-rear direction applied to the slider 110.

[0008] This invention has been made in view of the above-mentioned problems, and its purpose is to provide a slider for a slide fastener that has a locking function, which can increase the degree of freedom in the shape of the locking component and improve the locking strength, etc.

[0009] The above objective of the present invention is achieved by the following configuration: [1] A slider body (1) having an element passage (11) formed by an upper wing plate (7), a lower wing plate (8), and a connecting column (9) connecting the upper wing plate (7) and the lower wing plate (8), wherein an insertion hole (14) is formed in the connecting column (9) extending from an insertion opening (13) on the upper wing plate (7) side toward the lower wing plate (8) to form a cavity; and a pull handle (2) mounted on the slider body (1) so as to be pivotable between a first tilted position where the upper wing plate (7) is tilted backward and a second tilted position where the upper wing plate (7) is tilted forward. A slider (100) for a slide fastener, comprising: a claw member (3) mounted on the slider body (1) so as to sandwich the pivot (26) of the pull tab (2), and having a claw end (29) that can protrude into the element passage (11) through a claw hole (17) that penetrates the upper wing plate (7) at a position rearward of the insertion opening (13); a spring member (4) including a front end (30) that is inserted into the insertion hole (14) through the insertion opening (13), and a rear end (31) that has a contact portion (31a) that abuts against the claw member (3) at a position rearward of the insertion opening (13); and a cover (5) attached to the slider body (1) so as to cover at least the spring member (4) and the claw member (3), and having an inner surface that can abut against the spring member (4).

[0010] According to the present invention, a slider for a slide fastener can be provided that allows for increased freedom in the shape of the locking component in a slider with a locking function, thereby enabling improved locking strength and other improvements.

[0011] Figure 1 is an exploded perspective view of a slider for a slide fastener according to an embodiment. Figure 2 is a perspective view of a slider for a slide fastener according to an embodiment. Figure 3 is a plan view of the slider body 1 viewed from above. Figure 4 is a cross-sectional view of the slider body shown in Figure 3 along the line IV-IV. Figure 5 is a plan view of the cover viewed from below. Figure 6 is a cross-sectional view of the cover shown in Figure 5 along the line VI-VI. Figure 7 is a cross-sectional view of the slider for a slide fastener at the same position as in Figure 4, with the pull tab in the first folded position. Figure 8 is a cross-sectional view of the slider for a slide fastener at the same position as in Figure 4, with the pull tab slightly pivoted from the first folded position. Figure 9 is a cross-sectional view of the slider for a slide fastener at the same position as in Figure 4, with the pull tab in the second folded position. Figure 10 is a cross-sectional view of a conventional semi-automatic slider.

[0012] Hereinafter, each embodiment of the present invention will be described in detail with reference to the drawings. Figure 1 is an exploded perspective view of a slider for a slide fastener according to an embodiment. Figure 2 is a perspective view of a slider for a slide fastener according to an embodiment. The slider 100 for the slide fastener may hereinafter be simply referred to as slider 100. The slide fastener into which slider 100 is incorporated is not shown, but the left and right fastener elements engage when slider 100 moves forward, and the engagement of the left and right fastener elements is released when slider 100 moves backward.

[0013] Hereinafter, the direction of movement of the slider 100 that opens and closes the slide fastener will be referred to as the front-back direction. The front-back direction is indicated by the double-headed arrow FB in Figure 1, where forward is indicated by the arrow F in Figure 1, and backward is indicated by the arrow B in Figure 1. The direction perpendicular to the front-back direction will be referred to as the left-right direction or the width direction of the slider 100. The left-right direction is indicated by the double-headed arrow LR in Figure 1, where left is indicated by the arrow L in Figure 1, and right is indicated by the arrow R in Figure 1. The direction perpendicular to both the front-back and left-right directions will be referred to as the up-down direction. The up-down direction is indicated by the double-headed arrow UD in Figure 1, where upward is indicated by the arrow U in Figure 1, and downward is indicated by the arrow D in Figure 1. Note that the up-down direction does not necessarily mean the vertical direction (direction of gravity). For example, when the longitudinal direction of a slide fastener is oriented vertically, the vertical direction with respect to the slider 100 is included in the horizontal direction (perpendicular to the vertical direction). The directions referred to herein are independent of the vertical direction.

[0014] As shown in Figures 1 and 2, the slider 100 is composed of five components: a slider body 1, a pull handle 2, a claw member 3, a spring member 4, and a cover 5.

[0015] A Y-shaped element passage 11 is formed in the slider fuselage 1 by an upper wing plate 7, a lower wing plate 8, and a connecting column 9 that connects the upper wing plate 7 and the lower wing plate 8. Guide flanges 10 are bent at both ends in the left and right directions of the upper wing plate 7 and the lower wing plate 8, defining both ends in the left and right directions of the element passage 11 and guiding the fastener elements.

[0016] Figure 3 is a plan view of the slider body viewed from above. Figure 4 is a cross-sectional view of the slider body shown in Figure 3 along the line IV-IV. As shown in Figures 1, 3, and 4, the slider body 1 has an insertion hole 14 that extends from the insertion opening 13 on the upper wing plate 7 side toward the lower wing plate 8, forming a cavity in the connecting column 9. The slider body 1 has a front wall surface 63 and a rear wall surface 64 that define the front-to-rear width W of the insertion hole 14. The rear wall surface 64 has a downward sloping surface 64j that approaches the front wall surface 63 as it extends downward so that the front-to-rear width W of the insertion hole 14 is maximized at the insertion opening 13. This allows the front end portion 30 of the spring member 4, described later, to be easily inserted into the insertion hole 14. The front wall surface 63 may be a vertical surface perpendicular to the front-to-rear direction. The left wall surface and the right wall surface that define the left-to-right width of the insertion hole 14 may each be vertical surfaces perpendicular to the left-to-right direction. The insertion hole 14 is preferably formed to open only at the insertion opening 13, but it may also be formed to penetrate the slider body 1. Furthermore, an inclined surface may be provided on the front wall surface 63.

[0017] Mounting posts 12a, 12b, and 12c are provided on the upper surface of the upper wing plate 7 for attaching the cover 5, which will be described later. Mounting post 12a is formed in a roughly L shape at the rear of the upper wing plate 7, in the center in the left-right direction. Mounting posts 12b and 12c are provided on the front side of the upper wing plate 7 so as to sandwich the insertion hole 14 and the recessed portion 16, which will be described later, in the left-right direction, and are each formed in a roughly I shape.

[0018] The upper surface of the rear mounting column 12a has a concave first housing portion 65 formed at the rear end of the central part in the left-right direction. Comparing the upper surfaces of the front mounting columns 12b and 12c of the slider fuselage 1 with the insertion opening 13, the insertion opening 13 is located lower. As will be described later, the inside of the cover 5 attached to the upper wing plate 7 is provided with convex protrusions 36 on both the front and rear sides. On the front side of the slider fuselage 1, the space enclosed by the mounting columns 12b and 12c and the insertion opening 13, and on the rear side of the slider fuselage 1, the first housing portion 65 of the mounting column 12a, accommodate the protrusions 36, thereby allowing the cover 5 to be attached.

[0019] Between the front mounting posts 12b and 12c, a recessed portion 16 is provided at a position behind the insertion hole 14, capable of accommodating the engaging projection 28 provided at one end of the claw member 3. Furthermore, a claw hole 17 is formed at a position further behind the recessed portion 16 and in front of the mounting post 12a. In this embodiment, the claw hole 17 is formed slightly to the right in the left-right direction, with reference to the left-right center of the upper wing plate 7. The claw hole 17 penetrates the upper wing plate 7 so that the claw end 29 provided at the other end of the claw member 3 protrudes into the element passage 11. Note that the front-rear and left-right positions of the mounting posts 12a, 12b, 12c, insertion hole 14, recessed portion 16, and claw hole 17 are not limited to those described above and can be changed according to the type of element, etc. For example, the claw hole 17 may be provided slightly to the left in the left-right direction.

[0020] A cam housing groove 15 is formed in the center of the upper surface of the upper wing plate 7 to accommodate the cam portion 27, which will be described later and is provided on the pivot 26 of the pull handle 2. The cam housing groove 15 is located between the insertion hole 14 and the claw hole 17 in the front-rear direction, and the width of the cam housing groove 15 in the left-right direction is formed to be larger than the width of the claw hole 17 in the left-right direction.

[0021] Furthermore, shaft support portions 18 are provided on both the left and right sides of the cam housing groove 15 to support the pivot 26 of the pull handle 2. The front-rear end of the left shaft support portion 18 is defined by the rear end of the mounting column 12b and the front end of the mounting column 12a. The front-rear end of the right shaft support portion 18 is defined by the rear end of 12c and a column 19 that is provided so as to sandwich the claw hole 17 between the front end of the mounting column 12a. The bottom of the shaft support portion 18 is located above the bottom of the cam housing groove 15.

[0022] The pull handle 2 is provided with a knob 25 at one end and a pivot 26 at the other end. The pull handle 2 is mounted on the slider fuselage 1 so as to be able to pivot around the pivot 26 between a first tilted position, where it is tilted backward, and a second tilted position, where it is tilted forward, on the upper wing plate 7. A cam portion 27 that cooperates with the claw member 3 is formed in the left-right center of the pivot 26. In this embodiment, the cam portion 27 has a flat surface 27a that faces upward when the pull handle 2 is in the first tilted position, and a curved surface 27b that faces upward when the pull handle 2 is in the second tilted position. Furthermore, there is a convex portion 27c between the flat surface 27a and the curved surface 27b that protrudes in the direction of the knob 25 of the pull handle 2. In addition, the left-right width of the cam portion 27 is greater than the left-right width of the claw member 3, which will be described later.

[0023] Figure 5 is a plan view of the cover seen from below. Figure 6 is a cross-sectional view of the cover shown in Figure 5 along the line VI-VI. The cover 5 is attached to the slider body 1 so as to cover at least the spring member 4 and the claw member 3, which will be described later. As shown in Figures 5 and 6, the cover 5 is box-shaped with one side open, and openings 35 are provided in both side walls 33 through which the pivot 26 of the pull handle 2 can be inserted. By providing the cover 5, the overall mechanical strength of the slider 100 is increased, and the behavior of the spring member 4 on the slider body 1 is protected from the outside. Furthermore, the slider 100 can have a refined or simple appearance.

[0024] Furthermore, the inner surface of the upper wall 34 has an inner surface that can come into contact with the spring member 4. The inner surface of the upper wall 34 is curved so that the central part in the front-rear direction is furthest from the upper surface of the upper wing plate, allowing vertical movement of the claw member 3 and the rear end 31 of the spring member 4.

[0025] Two branched projections 36 are provided at the front-to-rear ends of the inner surface of the upper wall 34. Furthermore, a concave space 38 is formed on the inner surface of the upper wall 34 adjacent to the projections 36. Here, the cover 5 is not limited to the semi-automatic slider according to this embodiment, but can also be used for other types of slide fastener sliders. The projections 36 and space 38 are configured to function when the cover 5 is applied to other types of sliders. In this way, each component of the slider 100 is designed to be interchangeable with other products.

[0026] Figure 7 is a cross-sectional view of a slider for a slide fastener, with the pull tab in the first reclined position, at the same position as in Figure 4. As shown in Figure 7, the claw member 3 is mounted on the slider body 1 so as to sandwich the cam portion 27 of the pivot 26 of the pull tab 2. One end of the claw member 3 is provided with an engaging projection 28 that can be accommodated in a recess 16 of the slider body 1. The other end of the claw member 3 is provided with a claw end 29 that can protrude into the element passage 11 through a claw hole 17 that penetrates the upper wing plate 7. The engaging projection 28 and the claw end 29 are connected by a base 70, and the claw member 3 operates when the base 70 and the cam portion 27 of the pull tab 2 come into contact.

[0027] The spring member 4 includes a front end 30 that is inserted into the insertion hole 14 via an insertion opening 13, and a rear end 31 having a contact portion 31a that abuts against the claw member 3 at a position behind the insertion opening 13, and includes a curved intermediate portion 32 between the front end 30 and the rear end 31. The spring member 4 according to this embodiment has a width in the left-right direction and is positioned between the side walls 33 of the cover 5, and is formed by curving a long plate material into a U shape. A part of the front end 30 abuts against the rear wall surface 64 of the insertion hole 14, and the contact portion 31a of the rear end 31 abuts against the base portion 70 of the claw member 3. As a result, the spring member 4 biases the claw member 3 downward.

[0028] Furthermore, in this embodiment, a portion of the intermediate portion 32 abuts against a portion of the inner surface of the upper wall 34 of the cover 5. The spring member 4 makes contact with the claw member 3, the cover 5, and the slider body 1 at three points, preventing the spring member 4 from coming out and allowing a biasing force to be applied to the claw member 3 in a more stable position. When the pull handle 2 is in the first reclined position, the contact point between a portion of the intermediate portion 32 and a portion of the inner surface of the upper wall 34 of the cover 5 is located above the contact portion 31a of the rear end portion 31 in the vertical direction. This ensures that the spring member 4 has enough room to move inside the cover 5, while reliably biasing the claw member 3 with the spring member 4.

[0029] As described above, by separating the claw member 3 that engages with the element and the spring member 4 that undergoes elastic deformation, the degree of freedom in the shape of each can be increased. For example, compared to the claw portion 128 of the conventional example shown in Figure 10, the claw end portion 29 of this embodiment can be formed thicker in the front-rear direction, thereby improving the locking strength against external forces in the front-rear direction applied to the slider 100. Furthermore, by increasing the degree of freedom in the shape of the locking component, it is possible to make the shape applicable to other types of slide fasteners, thereby enabling the commonality of parts.

[0030] Figure 8 is a cross-sectional view of a slider for a slide fastener at the same position as in Figure 4, with the pull tab slightly pivoted from the first folded position. Figure 9 is a cross-sectional view of a slider for a slide fastener at the same position as in Figure 4, with the pull tab in the second folded position. As shown in Figures 7 to 9, the pull tab 2 is pivotable relative to the slider body 1. When the pull tab 2 is in the first folded position shown in Figure 7, the spring member 4 and the claw member 3 are locked. At this time, the claw member 3, which is biased downward by the spring member 4, can come into contact with the flat surface 27a of the cam portion 27. Also at this time, the claw member 3 protrudes its claw end 29 into the element passage 11, and the claw end 29 engages with the element, preventing the slider 100 from moving forward or backward. Furthermore, a part of the claw member 3 can come into contact with a claw restricting portion 67 formed in the slider body 1 to define the rear end of the claw hole 17. This prevents the claw member 3 from falling out of the claw hole 17.

[0031] As shown in Figures 8 and 9, when the pull handle 2 rotates from the first tilted position to the second tilted position, and especially when it is in the second tilted position shown in Figure 9, or in a position that is neither the first nor the second tilted position (hereinafter referred to as the intermediate position) as shown in Figure 8, the spring member 4 and the claw member 3 are in an unlocked state. That is, from the state shown in Figure 8 to the state shown in Figure 9, the spring member 4 and the claw member 3 are always in an unlocked state. At this time, the claw member 3 and the curved surface 27b of the cam portion 27 come into contact, and the cam portion 27 lifts the claw member 3 upward against the biasing force of the spring member 4. As a result, the claw end 29 of the claw member 3 retracts upward from the element passage 11, allowing the slider 100 to move forward and backward.

[0032] The pull tab 2 is pressed against the slider body 1 by the spring member 4 via the claw member 3. In this embodiment, the force pressing the pull tab 2 by the spring member 4 and the claw member 3 is stronger when the pull tab 2 is in the first tilted position than when it is in the second tilted position. This allows for stable maintenance of the locked state of the pull tab 2 and the claw member 3. Furthermore, in the painting process during the manufacturing of the slider 100, placing the pull tab 2 in the second tilted position increases the degree of freedom of movement of the pull tab 2, making it easier to paint the slider 100 uniformly.

[0033] The manufacturing method and materials of the slider 100 will be described below. The slider body 1, pull handle 2, claw member 3, and cover 5 are made of resin or metal and can be manufactured, for example, by die-casting or injection molding. The spring member 4 can be manufactured from a metal plate through processes such as punching and bending, but not limited to such metal springs, resin springs or other types of springs can also be used. After assembling the pull handle 2, claw member 3, and spring member 4 into the slider body 1, the cover 5 is attached from above. The cover 5 is fixed to the mounting columns 12a, 12b, and 12c, for example, by crimping. Subsequently, in the painting process, as described above, the pull handle 2 is placed in the second tucked position before painting. This makes it easier for paint to penetrate between the upper wing plate 7 and the pull handle 2, making it easier to achieve a uniform paint finish.

[0034] In this embodiment, the slider 100 has a cam portion of the pull handle 2 that is wide in the left-right direction, and is a configuration that can be applied to other types of sliders with different arrangement relationships of each component, such as the installation position of the claw member 3. Furthermore, in the slider 100 according to this embodiment, it is also possible to make it a so-called fully automatic slider, for example, by making the pull handle 2 a pull handle without a cam portion 27, so that the slider locks when the user releases their hand from the pull handle.

[0035] As described above, according to the slider 100 of this embodiment, the degree of freedom in the shape of the locking part can be increased in a slider with a locking function, and the locking strength can be improved.

[0036] Although various embodiments have been described above with reference to the drawings, it goes without saying that the present invention is not limited to these examples. It is clear to those skilled in the art that various modifications or alterations can be conceived within the scope of the claims, and these will naturally also fall within the technical scope of the present invention.

[0037] As described above, the following is disclosed in this specification: [1] A slider body (1) having an element passage (11) formed by an upper wing plate (7), a lower wing plate (8), and a connecting column (9) connecting the upper wing plate (7) and the lower wing plate (8), wherein an insertion hole (14) is formed in the connecting column (9) extending from an insertion opening (13) on the upper wing plate (7) side toward the lower wing plate (8) to form a cavity; and a pull handle (2) mounted on the slider body (1) so as to be pivotable between a first tilted position where the upper wing plate (7) is tilted backward and a second tilted position where the upper wing plate (7) is tilted forward. A slider (100) for a slide fastener, comprising: a claw member (3) mounted on the slider body (1) so as to sandwich the pivot (26) of the pull tab (2), and having a claw end (29) that can protrude into the element passage (11) through a claw hole (17) that penetrates the upper wing plate (7) at a position behind the insertion opening (13); a spring member (4) including a front end (30) that is inserted into the insertion hole (14) through the insertion opening (13), and a rear end (31) that has a contact portion (31a) that abuts against the claw member (3) at a position behind the insertion opening (13); and a cover (5) attached to the slider body (1) so as to cover at least the spring member (4) and the claw member (3), and having an inner surface that can abut against the spring member (4). With this configuration, the degree of freedom of the shape of the locking part can be increased in a slider with a locking function, and the locking strength can be improved.

[0038] [2] The slider (100) for a slide fastener according to [1], wherein the spring member (4) extends between the front end (30) and the rear end (31), and includes a curved intermediate portion (32) which contacts the cover (5). With this configuration, a spring member with a simple structure can ensure a stable pressing force against the claw member.

[0039] [3] The slider (100) for a slide fastener according to [1] or [2], wherein the pivot (26) of the pull handle (2) has a cam portion (27) that cooperates with the claw member (3), and when the pull handle (2) is in the first tilted position, the claw end (29) protrudes into the element passage (11), and when the pull handle (2) rotates in the direction from the first tilted position to the second tilted position, the cam portion (27) lifts the claw member (3) so that the claw end (29) moves upward. With this configuration, a semi-automatic stopping function can be realized even if the claw member and the spring member are separate structures.

[0040] [4] The pull tab (2) is pressed against the slider body (1) by the spring member (4) via the claw member (3), and the pressing force by the spring member (4) in the first tilted position is stronger than the pressing force by the spring member (4) in the second tilted position, a slider for a slide fastener (100) according to any one of [1] to [3]. With this configuration, the locked state of the pull tab and the claw member can be stably maintained, and in the painting process of the slider, by setting the pull tab to the second tilted position, the degree of freedom of movement of the pull tab is increased, making it easier to paint the slider uniformly.

[0041] [5] The slider (100) for a slide fastener according to [3] or [4], wherein the width of the cam portion (27) in the left-right direction is greater than the width of the claw member (3), and a cam housing groove (15) capable of accommodating the cam portion (27) is provided between the insertion hole (14) and the claw hole (17) of the upper wing plate (7). With this configuration, the claw member can be applied to other types of sliders in which the arrangement of each component differs, such as the installation position of the claw member.

[0042] 1 Slider body 2 Pull handle 3 Claw member 4 Spring member 5 Cover 7 Upper wing plate 8 Lower wing plate 9 Connecting column 10 Guide flange 11 Element passage 12a, 12b, 12c Mounting column 13 Insertion opening 14 Insertion hole 15 Cam housing groove 16 Recessed part 17 Claw hole 18 Shaft support part 19 Column 25 Knob part 26 Pivot 27 Cam part 27a Flat surface 27b Curved surface 27c Protrusion 28 Engaging projection 29 Claw end 30 Front end 31 Rear end 31a Contact part 32 Intermediate part 34 Upper wall 63 Front wall surface 64 Rear wall surface 64j Downward inclined surface 65 First housing part 67 Claw regulating part 70 Base part 100 Slider for slide fasteners (slider)

Claims

1. A slider fuselage (1) having an element passage (11) formed by an upper wing plate (7), a lower wing plate (8), and a connecting column (9) connecting the upper wing plate (7) and the lower wing plate (8), wherein an insertion hole (14) is formed in the connecting column (9) extending from an insertion opening (13) on the upper wing plate (7) side toward the lower wing plate (8) to form a cavity, and a pull handle (2) mounted on the slider fuselage (1) so as to be pivotable between a first tilted position where the upper wing plate (7) is tilted backward and a second tilted position where the upper wing plate (7) is tilted forward. A slider (100) for a slide fastener, comprising: a claw member (3) mounted on the slider body (1) so as to sandwich the pivot (26) of the pull tab (2), and having a claw end (29) that can protrude into the element passage (11) through a claw hole (17) that penetrates the upper wing plate (7) at a position rearward of the insertion opening (13); a spring member (4) including a front end (30) that is inserted into the insertion hole (14) through the insertion opening (13), and a rear end (31) that has a contact portion (31a) that abuts against the claw member (3) at a position rearward of the insertion opening (13); and a cover (5) attached to the slider body (1) so as to cover at least the spring member (4) and the claw member (3), and having an inner surface that can abut against the spring member (4).

2. The slider (100) for a slide fastener according to claim 1, wherein the spring member (4) extends between the front end (30) and the rear end (31) and includes a curved intermediate portion (32), the intermediate portion (32) in contact with the cover (5).

3. The slider (100) for a slide fastener according to claim 1 or 2, wherein the pivot (26) of the pull handle (2) has a cam portion (27) that cooperates with the claw member (3), and when the pull handle (2) is in the first tilted position, the claw end (29) protrudes into the element passage (11), and when the pull handle (2) rotates in the direction from the first tilted position to the second tilted position, the cam portion (27) lifts the claw member (3) so that the claw end (29) moves upward.

4. The slider (100) for a slide fastener according to claim 3, wherein the pull tab (2) is pressed against the slider body (1) by the spring member (4) via the claw member (3), and the pressing force by the spring member (4) in the first tilted position is stronger than the pressing force by the spring member (4) in the second tilted position.

5. The slider (100) for a slide fastener according to claim 3, wherein the width of the cam portion (27) in the left-right direction is greater than the width of the claw member (3), and the upper wing plate (7) has a cam housing groove (15) between the insertion hole (14) and the claw hole (17) that can accommodate the cam portion (27).

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