Slide fastener slider

Abstract

The purpose of the present invention is to facilitate the operation of a pull tab when opening a slide fastener and to improve the swingability of the pull tab in the right and left directions. 　A slider comprises a body 2, a pull tab 6, a stop claw 9, and an elastic plate 8. The pull tab comprises a shaft 62. The stop claw comprises a shaft holder 91 for holding the shaft from above and a claw 92 extending downward from the rear end of the shaft holder. The body comprises: a front attachment part 30 and a rear attachment part 40, both of which protrude from the upper surface of an upper wing plate 21; and guides 50 which protrude from the upper surface of the upper wing plate and guide the shaft from behind. The guides are disposed inward from the left and right side surfaces of the rear attachment part. Front surfaces 50f of the guides guide the shaft from behind, and are formed as inclined surfaces rising toward the rear side and each disposed on the front side relative to a front surface 40f of the rear attachment part.

Description

Slider for slide fasteners

[0001] The present invention relates to a slider for a slide fastener having a stop pawl that stops the movement of a body.

[0002] One known example of the slider described above includes an upper blade, a leaf spring disposed above the upper blade, a pair of mounting posts protruding from the front of the upper surface of the upper blade, a pair of mounting posts protruding from the rear of the upper surface of the upper blade, and a pull tab connected to the leaf spring (see Patent Document 1). One end of the leaf spring is a stop pawl. The lower front surfaces of the pair of rear mounting posts are guide surfaces for guiding the shaft of the pull tab. The guide surfaces are shaped to rise toward the rear.

[0003] Japanese Patent Application Publication No. 11-127918

[0004] When the pull tab is pulled to open the slide fastener, the pull tab axis moves rearward and is guided by the guide surface to move upward, making the slider of Patent Document 1 easier to operate than a configuration without a guide surface. The pull tab may also be swung left and right around the axis. The pull tab's swingability refers to the ability of the rear end of the pull tab to swing left and right around the axis, with the pull tab extending straight rearward from the axis as the reference.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a structure different from the above-described structure that makes it easier to operate the pull tab when opening a slide fastener and improves the ability of the pull tab to swing left and right.

[0006] The slider for a slide fastener of the present invention comprises a body having an element passage formed therein, a pull tab, a stop pawl disposed above the body and capable of stopping movement of the body, and an elastic plate pressing the stop pawl downward. The pull tab is rotatable in the front-rear direction and swingable left-right, with an axis at one end serving as the center of rotation and swing. The stop pawl comprises an axis holder capable of pressing the axis from above, and a pawl extending downward from the rear end of the axis holder and movable up and down within the element passage. The body comprises an upper blade defining the upper side of the element passage and having a pawl hole through which the pawl passes, a lower blade defining the lower side of the element passage, a connecting post connecting the front portions of the upper blade and the lower blade, front and rear mounting portions projecting from the top surface of the upper blade at a distance from each other in the front-rear direction and for mounting the stop pawl, and a guide projecting from the top surface of the upper blade and guiding the axis from the rear. The guides are located inward of the left and right sides of the rear mounting portion. The front surface of the guide is a guide surface that guides the shaft from the rear and rises toward the rear, and is disposed forward of the front surface of the rear mounting portion.

[0007] The shape of the guide surface is not important. For example, the guide surface may be inclined at a certain angle. The following is desirable to make it easier to operate the pull tab when opening the slide fastener. When viewed from the side, the front part of the guide surface, based on the front-to-back direction, is a first inclined surface, and the rear part of the guide surface is a second inclined surface that is relatively gentler than the first inclined surface.

[0008] The shape of the front surface of the rear mounting part is not important. For example, it may be parallel in the vertical direction. However, the following is desirable to make it easier to operate the pull tab when opening the slide fastener. The lower part of the front surface of the rear mounting part is a slope that rises toward the rear. Furthermore, when viewed from the side, the guide surface protrudes forward from below the upper end of the lower part of the front surface of the rear mounting part.

[0009] When viewed from the side, the distance between the lower part of the rear surface of the front mounting part and the lower part of the front surface of the rear mounting part in the front-to-rear direction may or may not be constant. However, to make it easier to operate the pull tab, it is preferable to do the following: When viewed from the side, the distance between the lower part of the rear surface of the front mounting part and the lower part of the front surface of the rear mounting part in the front-to-rear direction should increase as it goes upward.

[0010] The shape of the shaft is not important. For example, the standard position of the pull handle is defined as when the pull handle extends in a straight line behind the shaft. Then, when viewed in a plane, the shaft should be either an arc shape that bulges forward, or a straight line that extends left and right.

[0011] It does not matter whether the elastic plate and the locking claw are one piece or not. Also, the shape of the shaft holder is not important. However, it is preferable that the elastic plate and the locking claw are one leaf spring. Furthermore, the shaft holder is shaped so that it descends as it moves rearward.

[0012] In the slider of the present invention, the guide surface is located forward of the front surface of the rear mounting part, so the guide surface guides the shaft forward of the front surface of the rear mounting part, making it easy to operate the pull tab when opening the slide fastener. Moreover, because the guide is located inside the left and right side surfaces of the rear mounting part, the center of the pull tab's left and right swing is the front surface of the guide, making it less likely that the shaft will come into contact with the rear mounting part compared to when there is no guide, and so the pull tab has good left and right swingability.

[0013] 1 is an exploded perspective view showing a slider of the first embodiment. FIG. 2 is a plan view showing a slider of the first embodiment. FIG. 3 is a side view showing a slider of the first embodiment. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2. FIG. 5 is a cross-sectional view taken along line VV in FIG. 2. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 2. FIG. 7 is a plan view showing a body. FIG. 8 is a front view showing a body. FIG. 9 is a side view showing a body. FIG. 10 is a plan view showing a pull tab of a first modified example. FIG. 11 is a plan view showing a body of a first modified example. FIG. 12 is a side view showing a body of a first modified example. FIG. 13 is a front view showing a body of a first modified example. FIG. 14 is a plan view showing a body of a second modified example. FIG. 15 is a side view showing a body of a second modified example. FIG. 16 is a front view showing a body of a second modified example. FIG. 17 is an exploded perspective view showing a slider of the second embodiment. FIG. 18 is a cross-sectional view showing a slider of the second embodiment. FIG. 19 is an exploded perspective view showing a slider of a third embodiment. FIG. 19 is a cross-sectional view showing a slider of the third embodiment. FIG. 19 is a plan view showing a body of the third embodiment.

[0014] As is well known, a slide fastener comprises a pair of fastener stringers and a slider for opening and closing the pair of fastener stringers. The pair of fastener stringers comprises a pair of opposing tapes and a pair of element rows separately fixed to opposing side edges of the pair of tapes.

[0015] The slider engages and separates the pair of element rows. Figure 1 shows a slider 1 of a first embodiment. The slider 1 includes a body 2 that engages and separates the pair of element rows, a pull tab 6 that operates the body 2, and a stop member 7 that stops the movement of the body 2 by elastic force.

[0016] In the following, directions are defined as follows, based on the state in which the slide fastener is placed on a flat surface. The "front-rear direction" is the direction in which the slider 1 is moved. The "front-rear direction" is the direction in which the pull tab 6 rotates above the body 2 when opening and closing a pair of fastener stringers. The "front direction" is the direction in which the slider 1 is moved when closing the slide fastener. In FIG. 2, the "front direction" is the upward direction. The "rear direction" is the direction in which the slider 1 is moved when opening the slide fastener. In FIG. 2, the "rear direction" is the downward direction. The "left-right direction" is the direction in which a pair of element rows face each other. The "left direction" corresponds to the left direction in FIG. 2. The "right direction" corresponds to the right direction in FIG. 2. The "left-right direction" is also perpendicular to the front-rear direction. The "left-right direction" is the direction in which the pull tab 6 swings above the body 2. The "up-down direction" is the direction perpendicular to the front-rear direction and the left-right direction. The "up-down direction" is the direction perpendicular to the plane of the paper in FIG. 2. The "upward direction" refers to the direction facing the front among the directions perpendicular to the paper surface in Fig. 2. The "downward direction" refers to the direction facing the back among the directions perpendicular to the paper surface in Fig. 2. In each figure, the forward direction is indicated as F, the rearward direction as B, the leftward direction as L, the rightward direction as R, the upward direction as U, and the downward direction as D. The "radial direction" refers to the direction of a straight line connecting the center of an imaginary semicircle and a point on the semicircle when the pull tab 6 rotates back and forth as shown in Fig. 3.

[0017] As shown in Figures 1 to 3, the pull tab 6 includes a connecting portion 61 that connects to the stop member 7, and an operating portion 65 that is gripped when operating the pull tab. The operating portion 65 extends radially outward from the connecting portion 61. The radially inner end of the operating portion 65 and the connecting portion 61 cooperate to form a ring shape. The connecting portion 61 includes a shaft 62 that extends in a straight line from side to side, and a pair of arms 63 that connect both left and right ends of the shaft 62 to the operating portion 65. The pair of arms 63 extend in the radial direction. The shaft 62 serves as the center of rotation and swing of the pull tab 6. The state in which the pull tab 6 extends in a straight line rearward relative to the shaft 62 is defined as the reference state of the pull tab 6. In the reference state, the pull tab 6 rests on the body 2.

[0018] As shown in Figures 6 to 9, the fuselage 2 comprises upper and lower blades 21 and 22 that face each other vertically, a connecting column 23 that connects the front of the upper blade 21 and the front of the lower blade 22 at their respective left-right intermediate portions, flanges 24 that protrude from the left and right edges of the upper blade 21 and the lower blade 22 in a direction narrowing the vertical spacing between them, front and rear mounting portions 30 and 40 that protrude from the top surface of the upper blade 21 at a distance from each other in the front-to-rear direction and for attaching a stop member 7, and a pair of guides 50 that protrude from the top surface of the upper blade 21 between the front mounting portion 30 and the rear mounting portion 40.

[0019] The fuselage 2 has, as its internal space, an element passage 26 through which a pair of element rows pass, and a pair of tape grooves 27 that communicate with the element passage 26 and through which a tape passes. The element passage 26 is divided into upper and lower sections by the upper blades 21 and the lower blades 22, and into left and right sections by the left and right flanges 24 of the upper blades 21 and the lower blades 22. The element passage 26 penetrates in the front-to-rear direction. The front side of the element passage 26 is a pair of branch passages that branch off to the left and right with respect to the connecting pillar 23. The rear side of the element passage 26 is a single merged passage where the pair of branch passages merge and extend straight rearward from the connecting pillar 23. The tape groove 27 is formed between a pair of flanges 24 that face each other vertically.

[0020] The front mounting portion 30 includes a pair of front walls 31 that protrude from the upper surface of the upper blade 21 and face each other laterally, and a protrusion 35 (see FIG. 5 ) that protrudes from the upper surface of the upper blade 21 between the pair of front walls 31. The protrusion 35 is located on the front side between the pair of front walls 31. The pair of front walls 31 includes a pair of outer front walls 32 that face each other laterally, and a pair of inner front walls 33 that face each other laterally inside the pair of outer front walls 32. The front walls 31 are shaped such that the inner front walls 33 are joined to the inner left and right sides (center sides) of the outer front walls 32.

[0021] As shown in Figures 4 and 5, the upper surface 32u of the outer front wall 32 is positioned higher than the upper surface 33u of the inner front wall 33 in a stepped manner. The upper surface 33u of the inner front wall 33 is positioned higher than the upper surface 35u of the convex portion 35. The rear surface 32b of the outer front wall 32 is positioned rearward of the rear surface 33b of the inner front wall 33. In a side view, the outer front wall 32 hides the rear surface 33b of the inner front wall 33. In this embodiment, in a side view, the rear surface 32b of the outer front wall 32 is the rear surface 31b of the front wall 31 and the rear surface 30b of the front mounting portion 30. In a side view, the upper part of the rear surface 31b of the front wall 31 is approximately parallel to the vertical direction. The lower part of the rear surface 31b of the front wall 31 is inclined toward the rear as it extends downward. The lower part of the rear surface 31b of the front wall 31 is the lower part of the rear surface 30b of the front mounting portion 30.

[0022] As shown in FIGS. 7 and 8 , the rear mounting portion 40 includes a pair of rear walls 41 facing each other laterally. The pair of rear walls 41 includes a pair of outer rear walls 42 facing each other laterally and a pair of inner rear walls 43 facing each other laterally inside the pair of outer rear walls 42. The rear mounting portion 40 has the inner rear wall 43 joined to the inside of the left and right sides relative to the rear portions of the outer rear walls 42. One of the inner rear walls 43 (the right side in FIG. 7 ) includes a protruding wall 44 that protrudes toward the inside of the left and right sides (the left side in FIG. 7 ) forward of its rear end. As shown in FIGS. 4 and 5 , the upper surface 42u of the outer rear wall 42 is positioned higher than the upper surface 43u of the inner rear wall 43 in a stepped manner. The front surface 42f of the outer rear wall 42 is positioned forward of the front surface 43f of the inner rear wall 43. In a side view, the outer rear wall 42 hides the front surface 43f of the inner rear wall 43. In this embodiment, when viewed from the side, the front surface 42f of the outer rear wall 42 is the front surface 41f of the rear wall 41, and is the front surface 40f of the rear mounting portion 40. When viewed from the side, the upper part of the front surface 41f of the rear wall 41 is approximately parallel to the vertical direction. The lower part of the front surface 41f of the rear wall 41 is inclined relative to the vertical direction, such that it slopes forward as it extends downward. In other words, the lower part of the front surface 40f of the rear mounting portion 40 is a slope that rises toward the rear. As shown in FIG. 9 , the lower part of the front surface 41f of the rear wall 41 is an inclined surface that slopes in a substantially straight line with respect to the front-to-rear direction. With respect to the front-to-rear direction, the inclination angle θ0 of the lower part of the front surface 41f of the rear wall 41 is 45 degrees to 65 degrees. The lower part of the front surface 41f of the rear wall 41 is the lower part of the front surface 40f of the rear mounting portion 40. A distance G in the front-to-rear direction between the lower part of the front surface 40f of the rear mounting part 40 and the lower part of the rear surface 30b of the front mounting part 30 increases upward.

[0023] The pair of guides 50 guide the shaft 62 from the rear. As shown in FIG. 7 , the pair of guides 50 are laterally opposed and disposed inward relative to the left and right side surfaces of the rear mounting portion 40. On the left side of the fuselage 2, the guide 50 is formed in front of the outer rear wall 42 and joined to the inner side (right side) of the left and right sides. On the right side of the fuselage 2, the guide 50 is also formed in front of the outer rear wall 42 and joined to the inner side (left side) of the left and right sides. In FIG. 7 , a pair of first reference lines L1 and a pair of second reference lines L2 are shown as imaginary lines parallel to the front-to-rear direction. The pair of first reference lines L1 are straight lines extending from the outermost ends of the left and right side surfaces of the rear mounting portion 40. Specifically, the pair of first reference lines L1 are straight lines extending from the leftmost end of the left side surface of the left rear wall 41 and a straight line extending from the rightmost end of the right side surface of the right rear wall 41. The pair of second reference lines L2 are straight lines extending from the leftmost end of the left surface of the left guide 50 and straight lines extending from the rightmost end of the right surface of the right guide 50. The pair of second reference lines L2 are located inside the pair of first reference lines L1 in the left-right direction.

[0024] As shown in FIG. 4 , the upper surface 50u of the guide 50 is lower than the upper surface 40u of the rear mounting portion 40 and the upper surface 30u of the front mounting portion 30. Specifically, the upper surface 50u of the guide 50 is lower than the upper surface 33u of the inner front wall 33 and the upper surface 43u of the inner rear wall 43. When the pull tab 6 is in the standard state, the upper surface 50u of the guide 50 is lower than the upper end of the shaft 62. As shown in FIGS. 4 , 5 , and 9 , the front surface of the guide 50 is a guide surface 50f that guides the shaft 62 from the rear. The guide surface 50f is located forward of the front surface 40f of the rear mounting portion 40 (the front surface 41f of the rear wall 41). In other words, the left and right guides 50 have portions that protrude forward beyond the rear mounting portion 40. Furthermore, nothing protrudes upward from the upper wing 21 on the left-right outer side of the portions of the left and right guides 50 that protrude forward beyond the front surface 40f of the rear mounting portion 40, i.e., a space is provided. When the pull tab 6 is not operated, the shaft 62 is positioned between the pair of guide surfaces 50f and the front mounting portion 30. The guide surfaces 50f rise as they move rearward. When viewed from the side, the guide surfaces 50f are inclined relative to the front-to-rear direction. The guide surfaces 50f include a first inclined surface 50s located at the front and a second inclined surface 50t located at the rear. The first inclined surface 50s and the second inclined surface 50t are both inclined in a substantially straight line relative to the front-to-rear direction. The first inclined surface 50s and the second inclined surface 50t are continuous from front to back. The first inclined surface 50s is below the second inclined surface 50t. The second inclined surface 50t is a gentler inclined surface relative to the first inclined surface 50s. The inclination angle θ1 of the first inclined surface 50s is 40 to 60 degrees relative to the front-to-rear direction. The inclination angle θ2 of the second inclined surface 50t is 30 to 50 degrees. As shown in FIG. 9 , the inclination angle θ1 of the first inclined surface 50s is greater than the inclination angle θ2 of the second inclined surface 50t and is smaller than the inclination angle θ0 of the lower part of the front surface 41f of the rear wall 41. A gap G1 between the guide surface 50f and the lower part of the rear surface 31b of the front wall 31 provides a space for accommodating the shaft 62. This gap G1 is wider than, for example, when the entire guide surface 50f is formed with the inclination angle θ2 of the second inclined surface 50t, since the first inclined surface 50s is steeper than the second inclined surface 50t.

[0025] As shown in Figures 4 to 7, the upper blade 21 guides the upper surfaces of the pair of element rows. The lower blade 22 guides the lower surfaces of the pair of element rows. The upper blade 21 and the lower blade 22 are shaped so that the front portions thereof protrude laterally relative to the rear portions. The upper blade 21 has a claw hole h1 formed therethrough in the vertical direction. The claw hole h1 is located between the pair of rear walls 41 and is offset to one side or the other with respect to the center of the left and right sides of the upper blade 21. The claw hole h1 is located between the guide 50 and the inner rear wall 43 in the front-to-rear direction.

[0026] The stopping member 7 is a leaf spring. The stopping member 7 includes an elastic plate 8 extending in the front-rear direction and a stopping claw 9 extending from the elastic plate 8 and positioned below the elastic plate 8. The stopping member 7 is a single component, with the elastic plate 8 and the stopping claw 9 integrated into one unit. A pair of rear walls 41 are arranged on the left and right of the stopping claw 9.

[0027] The elastic plate 8 presses the locking claw 9 downward. The elastic plate 8 includes a strip-shaped upper plate 81 that is long in the front-rear direction, a pair of overhanging plates 82 that overhang to the left and right from a central portion of the upper plate 81 in the front-rear direction, a rear plate 83 that extends downward from the rear end of the upper plate 81, and a joining plate 84 that extends downward from the front end of the upper plate 81. The pair of overhanging plates 82 are accommodated and positioned between the outer front wall 32 and the outer rear wall 42 on corresponding left and right sides. The upper plate 81 is placed on the pair of inner front walls 33 and the pair of inner rear walls 43, and the upper ends of the pair of outer front walls 32 and the pair of outer rear walls 42 are plastically deformed to narrow the left-right gap, thereby attaching the elastic plate 8 to the front mounting portion 30 and the rear mounting portion 40. The joining plate 84 extends from the left-right center of the front end of the upper plate 81. The rear plate 83 is positioned so as to cover the rear surfaces of the overhanging walls 44 from behind. As a result, the rear plate 83 is hooked onto the protruding wall 44. When viewed from the side, the joining plate 84 has a C-shape that opens rearward. The lower end of the joining plate 84 is connected to the stopper claw 9.

[0028] The front portion of the stopping claw 9 is disposed between the pair of front walls 31 with a gap therebetween, and the rear portion of the stopping claw 9 is disposed between the pair of rear walls 41 with a gap therebetween. In this state, the stopping claw 9 is attached to the front mounting portion 30 and the rear mounting portion 40. The stopping claw 9 is capable of stopping and moving the body 2 relative to the element row. The stopping claw 9 is elastically movable up and down with the joint plate 84 as a fulcrum. When the stopping claw 9 is displaced upward, it is pressed downward by the elastic plate 8 with the joint plate 84 as a fulcrum. The stopping claw 9 includes a shaft presser 91 that extends rearward from the joint plate 84 and is capable of pressing the shaft 62 from above, and a claw 92 that extends downward from the rear end of the shaft presser 91.

[0029] The shaft holder 91 faces downward from the upper plate 81. The shaft holder 91 is narrower than the upper plate 81 in terms of left-to-right width. The rear end of the shaft holder 91 is located forward of the rear end of the upper plate 81. The shaft holder 91 includes a front holder 93 extending rearward from the joining plate 84 and a rear holder 94 extending rearward from the front holder 93 to reach the claw 92. The rear holder 94 protrudes left and right from the front holder 93. When viewed from the side, the front holder 93 and the rear holder 94 are connected in a curved manner. When the locking claw 9 is viewed from the side with the pull tab 6 in the standard state, both the front holder 93 and the rear holder 94 are inclined relative to the front-to-rear direction. The inclination of the front holder 93 descends as it moves forward. The inclination of the rear holder 94 descends as it moves rearward. The rear holder 94 is the part that holds the shaft 62 from above. In other words, when viewed from the side, the shaft holder 91 descends toward the rear at the portion that holds the shaft 62. Specifically, when viewed from the side, the rear holder 94 is bent. The bent portion P of the rear holder 94 faces the upper surface 50u of the guide 50. The front portion 95 of the rear holder 94 is forward of the bent portion P. The rear portion 96 of the rear holder 94 is rearward of the bent portion P. Based on the front-to-rear direction, the rear portion 96 of the rear holder 94 descends at a steeper angle toward the rear than the front portion 95 of the rear holder 94. The claw 92 penetrates the claw hole h1. The tip (lower end) of the claw 92 is biased toward one side or the other rather than the center of the shaft holder 91. When the pull tab 6 is in the standard position, the tip of the claw 92 is located in the element path 26 and stops the slider 1 by contacting the element row. In other words, the claw 92 can move up and down in the element path 26.

[0030] The slider 1 of the first embodiment has the following advantages. The guide surface 50f is a slope that rises toward the rear. The guide surface 50f is located forward of the front surface 40f of the rear mounting portion 40 (the front surfaces 41f of the pair of rear walls 41), so the guide surface 50f guides the pin 62 forward of the front surfaces 41f of the pair of rear walls 41. As a result, the slider 1 of the first embodiment makes it easier to operate the pull tab 6 when opening the slide fastener than when the guide 50 is not provided. Moreover, because the guide 50 is located inside the left and right side surfaces of the rear mounting portion 40, the center of the pull tab 6's left-right swing is the guide surface 50f. This makes it less likely that the pin 62 will come into contact with the pair of rear walls 41 compared to when the guide 50 is not provided, improving the left-right swingability of the pull tab 6.

[0031] The front portion of the guide surface 50f is the first slope 50s, which is steeper than the second slope 50t. Therefore, compared to, for example, when the entire guide surface 50f is formed with a slope at the same angle as the second slope 50t, the gap G1 between the guide surface 50f and the lower portion of the rear surface 31b of the front wall 31 is wider, allowing the shaft 62 to be stably accommodated. To open the slide fastener, the pull tab is pulled rearward, moving the shaft 62 rearward. The rear portion of the guide surface 50f is the second slope 50t, which is gentler than the first slope 50t. Therefore, compared to, for example, when the second slope 50t is a steeper slope like the first slope 50t, the force pulling the pull tab 6 rearward is more likely to directly translate into rearward movement of the shaft 62. As a result, the pull tab 6 is easier to operate.

[0032] The pull tab is pulled further rearward. As a result, the guide surface 50f protrudes forward from below the upper end of the lower part of the front surface 40f of the rear mounting portion 40 (the front surfaces 41f of the pair of rear walls 41), and the shaft 62 is guided from the gentle slope 50t to the lower part of the front surfaces 41f of the pair of rear walls 41. Because the lower parts of the front surfaces 41f of the pair of rear walls 41 are sloped upward as they extend rearward, the shaft 62 easily rises. As a result, the pawl 92 easily rises and separates from the element row.

[0033] When viewed from the side, the distance G in the front-to-rear direction between the lower part of the rear surface 30b of the front mounting part 30 and the lower part of the front surface 40f of the rear mounting part 40 becomes wider as it goes upward, so when the shaft 62 is displaced upward, it becomes easier to move back and forth, making it easier to operate the pull tab 6.

[0034] FIG. 10 shows a pull tab 6a of a first modified example. The pull tab 6a of the first modified example includes a connecting portion 61a and an operating portion 65a. The connecting portion 61a includes a shaft 62a and a pair of arms 63a. When viewed from above, the shaft 62a is arc-shaped and bulges forward relative to the pull tab 6a's standard state. The forward bulge refers to the forward movement of the shaft 62a from both left and right ends toward the center of the shaft 62a. Because the shaft 62a is arc-shaped, the pull tab 6a can be more easily swung left and right than if it were linear.

[0035] The pull tab 6a is an integrated unit of a connecting member 67 including a connecting portion 61a and an operating member 68 including an operating portion 65a. The connecting member 67 includes the connecting portion 61a and a first joint portion 64 extending radially outward from the connecting portion 61a. The operating member 68 includes the operating portion 65a and a second joint portion 69 extending radially inward from the operating portion 65a. The first joint portion 64 and the second joint portion 69 are joined together. The joining is achieved by, for example, insert molding. The operating member 68 is injection-molded by injecting resin into a mold using the connecting member 67 as an insert part. To strengthen the joint, a hole h2 penetrating vertically is formed in the first joint portion 64 in the figure.

[0036] As shown in FIGS. 11 to 13 , the fuselage 2a of the first modified example differs from the fuselage 2 described above in that it has only one guide 50a. The guide 50a is disposed between a pair of outer rear walls 42 with a gap in the left-right direction. The guide 50a is triangular pyramid-shaped. The guide 50a has a bottom and an apex (upper surface 50u). In plan view, the bottom is triangular. The left and right sides of the bottom are inclined relative to the front-to-rear direction, pointing outward to the left and right as they extend rearward. The guide 50a is bilaterally symmetrical. In plan view, the apex 50u is elliptical and located rearward of the center of the bottom. In side view, the guide surface 50f1 is a linear inclined surface. The inclination angle θ4 of the guide surface 50f is between 30 and 60 degrees.

[0037] As shown in Figures 14 to 16, the fuselage 2b of the second modified example is the same as the fuselage 2a of the first modified example in that it has a single guide 50b. However, in plan view, the guide 50b has a rectangular bottom surface with one side recessed, a narrow apex (upper portion 50u) extending from the left and right ends of the apex 50u to a pair of front corners of the bottom surface, and a valley portion 50z between the pair of ridges 50w. The left and right sides of the bottom surface are parallel to each other, and the rear side is parallel to each other, with the center of the front side recessed in an arc-like shape toward the rear. The recession of the front side protrudes forward from the center toward both ends. When viewed from behind, the apex 50u is recessed in an arc-like shape. The apex 50u rises from the center toward both ends. The front surface of the ridge 50w is the guide surface 50f2. When viewed from the side, the guide surface 50f2 is the same as the guide surface 50f1 of the first modified example. The valley portion 50z also rises toward the rear in the front-rear direction. In the left-right direction, the valley portion 50z is recessed so that it becomes lower from both ends toward the center.

[0038] As shown in Figures 17 to 19, the slider 1a of the second embodiment differs from the slider 1 of the first embodiment in that, in addition to the body 201 and the pull tab 6, instead of the stopping member 7, the slider 1a is equipped with a stopping claw 9a and an elastic plate 8a as separate parts, and further equipped with a cover 11.

[0039] In the fuselage 201, the front mounting portion 301 and the rear mounting portion 401 differ from the front mounting portion 30 and the rear mounting portion 40 of the first embodiment, and the guide 501 differs from the guide 50 of the first embodiment in terms of its left-right position.

[0040] The front mounting portion 301 includes a pair of front walls 311 facing each other laterally, a first central wall 371 connecting the front portions of the pair of front walls 311, and a second central wall 372 connecting the rear portions of the pair of front walls 311. The first central wall 371 and the second central wall 372 protrude from the upper surface of the upper blade 21. The first central wall 371, the second central wall 372, the pair of front walls 311, and the upper blade 21 form a recess 373 that opens upward. In other words, the recess 373 is formed on the upper surface of the front mounting portion 301. The front wall 311 includes an outer front wall 321 and an inner front wall 331. The inner front wall 331 extends in the front-to-rear direction. The outer front wall 321 protrudes outward on the left and right from the rear portion of the inner front wall 331. The rear surface of the outer front wall 321 is located rearward of the rear surface of the inner front wall 331. When viewed from the side, the rear surface of the outer front wall 321 is the rear surface 311 b of the front wall 311 and the rear surface 301 b of the front mounting portion 301 .

[0041] The rear mounting portion 401 includes a pair of rear walls 411, 412 facing each other laterally at the front, and a third central wall 461 extending from the rear end of one of the rear walls 411 toward the center between the left and right. The third central wall 461 protrudes from the upper surface of the upper wing 21 rearward of the nail hole h1. The right rear wall 412 is located to the right of the nail hole h1. The left rear wall 411 extends from the left side of the nail hole h1 rearward beyond the right rear wall 412. Specifically, the left rear wall 411 includes an outer rear wall 421 and an inner rear wall 431. The inner rear wall 431 is longer in the front-to-rear direction than the outer rear wall 421. The outer rear wall 421 protrudes leftward from the front of the inner rear wall 431. The right rear wall 412 has the same shape as the left outer rear wall 421. In other words, the right rear wall 412 is formed solely by the outer rear wall 421. The front surface of the outer rear wall 421 and the front surface of the right rear wall 412 are the front surface 401f of the rear mounting portion 401. The front surface 401f of the rear mounting portion 401 is the front surface 411f of the left rear wall 411 and the front surface 412f of the right rear wall 412, and has the same shape as the front surface 40f of the rear mounting portion 40 in the first embodiment.

[0042] The guide 501 protrudes forward from the inner rear wall 431. Therefore, the guide 501 is disposed inside the left and right side surfaces of the rear mounting portion 40. As a result, the pair of second reference lines L2 are located inside the pair of first reference lines L1. When viewed from the side, the guide surface 501f is the same as the guide surface 50f1 of the first modified example.

[0043] The elastic plate 8a is a flat leaf spring. In plan view, the front end of the elastic plate 8a is U-shaped and opens forward, and the rear end of the elastic plate 8a is U-shaped and opens rearward. The elastic plate 8a is fixed to the inner surface of the cover 11. Therefore, portions for fixing the front and rear ends of the elastic plate 8a are formed at the front and rear portions of the inner surface of the cover 11.

[0044] The cover 11 is hollow and opens downward. When viewed from the side, the cover 11 has a U-shape that opens downward. The cover 11 covers the front mounting portion 301 from above, the front, and the left and right sides on the front side of the pair of outer front walls 321, and covers the rear mounting portion 401 from above, the rear, and the left and right sides on the rear side of the pair of outer rear walls 421. In this state, the front and rear portions of the cover 11 are plastically deformed separately and fixed to the front mounting portion 301 and the rear mounting portion 401. The front mounting portion 301 and the rear mounting portion 401 are located below the elastic plate 8a.

[0045] In addition to the shaft holder 91a and the claw 92a, the locking claw 9a also includes a hook 97 extending downward from the front end of the shaft holder 91a. The thickness direction of the locking claw 9a is the left-right direction. The locking claw 9a is a rigid body that cannot elastically deform in the up-down direction. The hook 97 is housed in the recess 373. The locking claw 9a is pressed downward by the elastic plate 8a and can swing up and down around the hook 97 as a fulcrum. As a result, the claw 92a can move up and down.

[0046] The slider 1b of the third embodiment differs from the slider 1 of the first embodiment in that it includes a stop member 7b and a cover 11b in addition to the body 202 and the pull tab 6.

[0047] In the body 202, a front mounting portion 302 and a rear mounting portion 402 differ from the front mounting portion 30 and the rear mounting portion 40 of the first embodiment, and a pair of guides 502 differ from the pair of guides 50 of the first embodiment.

[0048] The front mounting portion 302 includes a base 303 that protrudes upward from the upper surface of the upper blade 21 and on which the stop member 7b is placed, and a protrusion 304 that protrudes from the upper surface of the base 303 and positions the stop member 7b. When viewed from the side, the rear surface of the base 303 is the rear surface 302b of the front mounting portion 302.

[0049] The rear mounting portion 402 includes a pair of rear walls 413 and a third central wall 461 that joins the rear portions of the pair of rear walls 413. The rear walls 413 include an outer rear wall 422 and an inner rear wall 432. The inner rear wall 432 extends in the front-to-rear direction. The outer rear wall 422 protrudes outward on the left and right from the front portion of the inner rear wall 432. The front surface of the outer rear wall 422 is the front surface 413f of the rear wall 413, and is the front surface 402f of the rear mounting portion 402. The front surface 402f of the rear mounting portion 402 has the same shape as the front surface 40f of the rear mounting portion 40 in the first embodiment.

[0050] The guides 502 protrude forward from the front surface of the inner rear wall 432 and jut inward on the left and right sides. The pair of guides 502 are disposed on the inside of the left and right side surfaces of the rear mounting portion 402. As a result, the pair of second reference lines L2 are located on the inside of the pair of first reference lines L1. When viewed from the side, the guide surfaces 502f are the same as the guide surfaces 50f1 of the first modified example.

[0051] The stopping member 7b is a leaf spring and includes a stopping claw 9b and an elastic plate 8b. When viewed from the side, the stopping claw 9b is L-shaped. The stopping claw 9b includes a shaft holder 91b and a claw 92b.

[0052] In plan view, the shaft holder 91b has a ring shape elongated in the front-to-rear direction. A hole h3 is formed in the inner surface of the shaft holder 91b, penetrating the vertical direction. The shaft holder 91b includes a pair of vertical pieces 911 facing each other on the left and right, a front piece 912 connecting the front ends of the pair of vertical pieces 911, and a rear piece 913 connecting the rear ends of the pair of vertical pieces 911. The front piece 912 and the rear piece 913 extend downward from the vertical piece 911. In other words, the front piece 912 and the rear piece 913 are bent relative to the vertical piece 911. As a result, in side view, the shaft holder 91b has a U-shape that opens downward. A protrusion 304 is inserted through the hole h3, and the front piece 912 is hooked onto the front surface of the protrusion 304, thereby positioning the front of the shaft holder 91b. A claw 92b extends downward from the middle of the rear piece 913.

[0053] The elastic plate 8b is a long, narrow piece extending in the front-to-rear direction. The elastic plate 8b extends upward from the middle of the left and right sides of the rear piece 913 toward the front, moving away from the shaft holder 91b. The front end of the elastic plate 8b is pressed from above by the inner surface of the cover 11b, thereby pressing the claw 92 downward.

[0054] The present invention is not limited to the above embodiment, and can be modified as appropriate within the scope of the present invention. For example, when viewed from the side, the guide surface may be an inclined surface that bulges in an arc shape as long as it rises toward the rear.

[0055] DESCRIPTION OF SYMBOLS 1, 1a, 1b Slider 2, 2a, 2b, 201, 202 Fuselage 21 Upper wing h1 Claw hole 22 Lower wing 23 Connecting post 24 Flange 26 Element path 27 Tape groove 30, 301, 302 Front mounting portion 303 Base 304 Protrusion 31, 311 Front wall 32, 321 Outer front wall 30b, 31b, 311b, 32b, 33b, 301b, 302b Rear surface 30u, 32u, 33u, 35u, 40u, 44u Upper surface 33, 331 Inner front wall 35 Convex portion 371 First central wall 372 Second central wall 373 Concave portion 40, 401, 402 Rear mounting portion 40f, 401f, 402f, 41f, 411f, 412f, 413f, 42f, 43f Front surface 41, 411, 412, 413 Rear wall 42, 421, 422 Outer rear wall 43, 431, 432 Inner rear wall 44 Projecting wall 461 Third central wall 50, 50a, 50b, 501, 502 Guide 41u, 42u, 43u, 50u Upper surface 50f, 50f1, 50f2, 501f, 502f Guide surface 50s First inclined surface 50t Second inclined surface 50w Ridge portion 50z Valley portion 6, 6a Pull tab 61, 61a Connecting portion 62, 62a Axis 63, 63a Arm 64 First joint 65, 65a Operating portion 67 Connecting member 68 Operating member 69 Second joint h2 Hole 7, 7b Stopping member 8, 8a, 8b Elastic plate 81 Upper plate 82 Protruding plate 83 Rear plate 84 Joining plate 9, 9a, 9b Stopping claw 91, 91a, 91b Shaft holder 911 Vertical piece 912 Front piece 913 Rear piece h3 Hole 92, 92a, 92b Claw 93 Front holder 94 Rear holder 95 Front portion 96 Rear portion 97 Hook 11, 11b Cover G, G1 Spacing L1, L2 Reference line P Bending portion

Claims

1. A device comprising a body (2, 2a, 2b, 201, 202) having an element path (26) formed therein, a pull (6, 6a), stop claws (9, 9a, 9b) arranged above the body (2, 2a, 2b, 201, 202) and capable of stopping the movement of the body (2, 2a, 2b, 201, 202), and an elastic plate (8, 8a, 8b) for pressing the stop claws (9, 9a, 9b) downward, wherein the pull (6, 6a) is rotatable in the front-rear direction and swingable in the left-right direction, and has an axis (62, 62a) at one end thereof that serves as the center of rotation and swing, The stop claws (9, 9a, 9b) include shaft holders (91, 91a, 91b) that can press the shafts (62, 62a) from above, and claws (92, 92a, 92b) that extend downward from the rear ends of the shaft holders (91, 91a, 91b) and are movable up and down within the element path (26), The fuselage (2, 2a, 2b, 201, 202) includes upper blades (21) that define the upper side of the element path (26) and have claw holes (h1) through which the claws (92, 92a, 92b) pass, lower blades (22) that define the lower side of the element path (26), connecting posts (23) that connect the front parts of the upper blades (21) and the front parts of the lower blades (22), front mounting parts (30, 301, 302) and rear mounting parts (40, 401, 402) that protrude from the upper surface of the upper blade (21) at a distance from each other in the front and rear directions and that mount the stop claws (9, 9a, 9b), and guides (50, 50a, 50b, 501, 502) that protrude from the upper surface of the upper blade (21) and that guide the shafts (62, 62a) from the rear, The guides (50, 50a, 50b, 501, 502) are arranged inside the left and right side surfaces of the rear mounting portion (40, 401, 402), and the front surfaces of the guides (50, 50a, 50b, 501, 502) are guide surfaces (50f, 50f1, 50f2, 501f, 502f) that guide the shaft (62, 62a) from the rear and rise as they move rearward, and are arranged forward of the front surfaces (40f, 401f, 402f) of the rear mounting portion (40, 401, 402).

2. A slider for a slide fastener as described in claim 1, characterized in that when viewed from the side, the front part of the guide surface (50f) is a first inclined surface (50s) based on the front-to-back direction, and the rear part of the guide surface (50f) is a second inclined surface (50t) that is relatively gentler than the first inclined surface (50s).

3. A slider for a slide fastener as described in claim 1 or 2, characterized in that the lower part of the front surface (40f, 401f, 402f) of the rear mounting portion (40, 401, 402) is a slope that rises toward the rear, and when viewed from the side, the guide surface (50f, 50f1, 50f2, 501f, 502f) protrudes forward from below the upper end of the lower part.

4. A slider for a slide fastener as described in claim 3, characterized in that when viewed from the side, the front-to-rear distance (G) between the lower part of the rear surface (30b, 301b, 302b) of the front mounting portion (30, 301, 302) and the lower part of the front surface (40f, 401f, 402f) of the rear mounting portion (40, 401, 402) becomes wider as it goes upward.

5. A slider for a slide fastener as described in claim 4, characterized in that the state in which the pull tab (6a) extends in a straight line rearward relative to the axis (62a) is defined as the reference state of the pull tab (6a), and when viewed in a plane, the axis (62a) is arc-shaped and bulges forward.

6. A slider for a slide fastener as set forth in claim 4, wherein the state in which the pull tab (6) extends rearward in a straight line relative to the shaft (62) is defined as the reference state of the pull tab (6), and the shaft (62) is a straight line extending left and right.

7. A slider for a slide fastener as described in claim 4, characterized in that the elastic plate (8, 8b) and the stop claw (9, 9b) are an integrated leaf spring, and the shaft holder (91, 91b) is shaped to descend as it moves rearward.

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