ZIPPER SLIDE

Abstract

A slider (3) for a zipper comprises a metal slider body (4), a pair of metal support axes (5, 5) projecting to the right and left from the right and left side faces (4a) of the slider body (4), and a pull (6) rotatably held by the pair of support axes (5, 5). The pull (6) has a pair of through holes (62b) or a pair of recesses (62d) into which the pair of support axes (5, 5) is inserted, and each pair of through holes (62b) or the pair of recesses (62d) has a plastic-covered plastic part (63).

Description

TECHNICAL AREA

[0001] The present invention relates to a slider for a zipper. STATE OF THE ART

[0002] Patent literature 1 discloses a slider 100 for a concealed zipper, which is used, for example, in a seat of a motor vehicle or a train. In a slider 100, a pull tab 107 is connected to a slider body section 120 via a pull tab attachment section 106.

[0003] Patent literature 2 discloses a slider 100 for a zipper, in which a pull tab 200 made of plastic is attached to a slider body section 120 via a pull tab attachment section 160 made of metal. CITATION LIST PATENT LITERATURE Patent Document 1: JP2007-54176A Patent specification 2: WO2016 / 135897A1 SUMMARY OF THE INVENTIONAL PROBLEM

[0004] In the slide 100 from patent literature 1, the pull tab 107 is rotatably mounted on the pull tab mounting section 106 via an annular section 107a. However, the slide 100 from patent literature 1 is not designed such that the pull tab 107 is held in a predetermined position.

[0005] In the slide 100 from patent literature 2, the pull tab 200 is rotatably mounted by the pull tab mounting section 160, which is provided on an upper surface of the slide body section 120. The pull tab mounting section 160 comprises a pair of claw sections 170, which are arranged opposite each other to pivotally mount an axle section 210 of the pull tab 200, and a mounting surface 161 provided between the pair of claw sections 170, on which the axle section 210 of the pull tab 200 is arranged. The pull tab 200 has the axle section 210 made of plastic, and the axle section 210 comes into close contact with an inner circumferential surface of the pull tab mounting section 160. Accordingly, the pull tab 200 can be held in a variety of positions, and it can be prevented from dangling.

[0006] An upper section of the slider body occupies a considerable portion of the slider's total upward projection from a pair of tapes, which is one of the key elements shaping the zipper's appearance. However, since the slider described in patent literature 2 requires the pair of upwardly projecting claw sections 170 on the upper surface of the slider body section 120, the height of the slider body section 120 increases, making it appear thicker.

[0007] To pivot the axle section 210, a step is required to press the pair of claw sections 170 of the slide body section 120 together with a punch 300. The pair of claw sections 170 is plastically deformed and pressed together by the impact of the punch 300, but it is difficult to stably adjust a fixed state of the axle section 210 and thus of the pull tab 200 by the degree of curling.

[0008] The present invention was made taking into account the problems described above, and the objective of the present invention is to provide a slider for a zipper with an excellent appearance, which is suitable for stably preventing a pull tab from hanging down. SOLUTION TO THE PROBLEM

[0009] To solve the problems mentioned above, the present invention is achieved through the following configurations.

[0010] [1] A zipper slider comprises the following: a metal slider body; a pair of metal support axes projecting to the left and right from the left and right side faces of the slide body; and a pull tab 6 rotatably supported by the pair of support axes, the pull tab having a pair of through holes or a pair of recesses into which the pair of support axes is inserted, and each of the through holes or recesses having a plastic-covered section. ADVANTAGES OF THE INVENTION

[0011] According to the present invention, it is possible to provide a slider for a zipper which is suitable for stably preventing a pull tab from hanging down. BRIEF DESCRIPTION OF THE DRAWINGS [ Fig. 1] Fig. Figure 1 is a top view showing a zipper of a first embodiment in which a slider of the first embodiment is used. [ Fig. 2] Fig. Figure 2 is a perspective view of the slider as seen obliquely from above. [ Fig. 3] Fig. Figure 3 is a top view of the slider as seen from above. [ Fig. 4] Fig. Figure 4 is a rear view of the slider, as seen from behind. [ Fig. 5] Fig. Figure 5 is a side view of the slider as seen from the left. [ Fig. 6] Fig. 6 is a cross-sectional view along line VI-VI in Fig. 5. [ Fig. 7] Fig. Figure 7 is a perspective view of a pull tab of the slide. [ Fig. 8] Fig. Figure 8 is an enlarged side view of the slider from the right, showing a state in which the pull tab is pulled upwards in an up-down direction. [ Fig. 9] Fig. 9 is a view showing a state in which the pull tab is out of the state of Fig. 8 is rotated and tilted. [ Fig. 10] Fig. Figure 10 is an enlarged side view of the slider seen from the right, showing a state in which the pull tab is rotated 90° out of the position shown in Figure 10. Fig. The state shown in 8 is rotated and tilted so that it is vertical in the top-bottom direction. [ Fig. 11] Fig. Figure 11 is an enlarged side view of a slider according to a modification, seen from the right, showing a state in which a pull tab is pulled upwards in an up-down direction. [ Fig. 12] Fig. 12 is a view showing a state in which the pull tab is out of the state of Fig. It is rotated and tilted at 11. [ Fig. 13] Fig. Figure 13 is an enlarged side view of the slider seen from the right, showing a state in which the pull tab is rotated 90° out of the position shown in Figure 13. Fig. 11 shown state rotated and tilted so that it is vertical in the top-bottom direction. [ Fig. 14] Fig. Figure 14 is a cross-sectional view showing an example where the pull tab has a recess instead of a through hole. [ Fig. 15] Fig. Figure 15 is a cross-sectional view showing an example where the entire pull tab, including the through hole, is made of plastic. DESCRIPTION OF EXECUTION FORMS

[0012] A zipper according to the individual embodiments of the present invention is described in detail below with reference to the drawings. In this description, a "front-back direction" of the zipper is a sliding direction of the slider and is referred to as the longitudinal direction of the zipper. In particular, a direction in which the slider is pushed to engage the left and right rows of elements is defined as "front," and a direction in which the slider is pushed to separate the left and right rows of elements is defined as "back." Furthermore, a "left-right direction" of the zipper is a direction in which a pair of rows of elements is arranged and is orthogonal to the sliding direction of the slider; it can also be referred to as the width direction of the zipper.

[0013] Furthermore, an "up-down direction" of the zipper is a direction orthogonal to the front-back direction and to the left-right direction and can also be described as the thickness direction of a closure tape or as a height direction of the element row. (First embodiment)

[0014] Fig. Figure 1 is a top view showing a zipper of a first embodiment in which a slider of the first embodiment is used. Fig. Figure 2 is a perspective view of the slider as seen obliquely from above. Fig. Figure 3 is a top view of the slider. Fig. Figure 4 is a rear view of the slider from behind. Fig. Figure 5 is a side view of the slider from the left. Fig. Figure 6 is a cross-sectional view along line VI-VI in Fig. 5.

[0015] As in Fig. Figure 1 shows a zipper 1 of the first embodiment of the present invention, in which a slider 3 of the first embodiment of the present invention is used, a pair of zipper tapes 2, 2 extending in the front-back direction and arranged parallel in the left-right direction and the slider 3 for a zipper (hereinafter simply referred to as slider 3), which is moved in the front-back direction along left and right side edge sections of a pair of opposing zipper tapes 2, 2.

[0016] When slider 3 is moved forward, the two zipper tapes 2, 2 are closed, and when slider 3 is moved backward, the two zipper tapes 2, 2 are opened. The front is in Fig. 1. The top and back are in Fig. 1. The underside. The top side is the front side in relation to a paper surface. Fig. 1 and the underside is an inside in relation to the paper surface of Fig. 1. The right side is in Fig. 1. A right side and the left side is in Fig. 1. A left side.

[0017] The pair of zipper tapes 2, 2 comprises a pair of tapes 21, 21 extending in the front-back direction and arranged parallel in the left-right direction, and a pair of element rows 22, 22 attached along the opposite left and right side edge sections of the pair of tapes 21, 21.

[0018] Although in Fig. Not shown, the pair of zipper tapes 2, 2 can comprise two front stops attached separately to the respective tapes 21 on the fronts of the pair of element rows 22, 22, and a back stop attached to the pair of tapes 21, 21 on the back of the pair of element rows 22, 22.

[0019] Each element row 22 is formed by a large number of elements 22a arranged at intervals in the front-back direction along the underside of the opposing side edge section of the tape 21, and in the present embodiment is formed by a spiral element in which a large number of elements 22a are continuously formed in a spiral shape. When the slider 3 is moved forward to close the pair of zipper tapes 2, 2, the elements 22a of the pair of element rows 22, 22 interlock. When the front stop is engaged, the slider 3 abuts the front stop, thus preventing further forward movement of the slider 3. When the slider 3 is moved backward to open the pair of zipper tapes 2, 2, the elements 22a of the pair of element rows 22, 22 are separated to the left and right.When the rear stop is engaged, the slide 3 collides with the rear stop, thus preventing any further backward movement of the slide 3.

[0020] It is preferred that each band 21 has a thin and elongated rectangular shape in plan view and has a waterproof property, for example a multi-layered structure in which a top surface of a band main body made of fabric is covered with a waterproof layer of plastic, or a single-layer structure of the band main body made of plastic.

[0021] As in the Fig. As shown in Figures 1 to 6, the slide 3 of the first embodiment of the present invention comprises a slide body 4 which engages with the pair of element rows 22, 22 and is movable in the front-back direction, a pair of support axes 5, 5 which project laterally from the left and right side surfaces of the slide body 4, and a pull tab 6 which is rotatably held by the pair of support axes 5, 5.

[0022] The pair of support axes 5, 5 project from the left and right side surfaces 4a, 4a of the slide body 4 to the left and right (outwards in a left-right direction). More precisely, the two support axes 5, 5 project in the front-back direction from the central sections of the left and right side surfaces 41a, 41a of an upper leaf 41 of the slide body 4 to the left and right and are arranged in a straight line in the left-right direction. As in Fig. As shown in Figure 5, each support axis 5 has an essentially quadrangular prism shape, which is essentially quadrangular in the left-right direction. Viewed in the left-right direction, the support axis 5 shown in the drawing is not a perfect quadrilateral with chamfered corners, but it is not limited to this shape and can also be a perfect quadrilateral without chamfers. As will be described later, the shape of each support axis 5 is not particularly restricted and can be an essentially polygonal prism shape, which has an essentially polygonal shape when viewed in the left-right direction; an essentially cylindrical shape, which has an essentially circular shape when viewed in the left-right direction; a columnar shape, which has an essentially teardrop shape when viewed in the left-right direction; or a columnar shape, which has an essentially elliptical shape when viewed in the left-right direction.

[0023] The sliding body 4 comprises the upper sheet 41 and a lower sheet 42, which are arranged opposite each other at a distance in the top-bottom direction, a coupling column 43, which is installed in an intermediate section in the left-right direction between the front sections of both the upper sheet 41 and the lower sheet 42, two flanges 44, 44, which project downwards from the left and right end sections of the upper sheet 41, and the pair of support axes 5, 5, which is described above.

[0024] An element passage 45, through which the pair of element rows 22, 22 passes, and a pair of band grooves 46, 46, through which the pair of bands 21, 21 passes, are formed within the slide body 4. The slide body 4 with the pair of support axes 5, 5 is preferably made of metal, for example a copper-zinc alloy, and is formed, for example, by die casting.

[0025] The upper sheet 41 has essentially flat top and bottom surfaces. The essentially flat surface comprises not only a horizontal plane, but also a curved plane that has an arc shape in side view, as well as a plane formed by the combination of a curved plane and a horizontal plane. In a top view, the upper sheet 41 has a bilaterally symmetrical shape, as shown in Fig. Figure 3 shows that the lower sheet 42 also has a symmetrical shape on both sides when viewed from above. The lower sheet 42 also has essentially flat top and bottom surfaces.

[0026] As in Fig. As shown in Figure 4, the element passage 45 is a space separated from the outside by the upper and lower surfaces by the upper sheet 41 and the lower sheet 42, and from the outside by the two flanges 44 and 44 on the left and right sides, and extending in a front-to-back direction. A rear section of the element passage 45 extends linearly, and a rear end of the element passage 45 is a rearward-facing opening 45b through which the pair of element rows 22 and 22 pass in the engaged state. On the other hand, the front section of the element passage 45 is forked forward to the left and right by the coupling column 43, and the front end of the element passage 45 is a pair of forward-facing openings 45a and 45a through which the pair of element rows 22 and 22 pass in the disengaged state. That is to say, the element passage 45 has an overall Y-shape.

[0027] When the pair of zipper tapes 2, 2 is open, i.e., when the slider 3 is moved backward, the pair of element rows 22, 22 in the interlocking state, together with the pair of tapes 21, 21 located below the two element rows 22, 22, are inserted from the rearward-facing opening 45b into the element passage 45. Then, the pair of element rows 22, 22 are separated to the left and right by the coupling column 43, and the pair of element rows 22, 22, in the separated state, together with the pair of tapes 21, 21, are ejected from the forward-facing openings 45a. However, when the pair of zipper tapes 2, 2 is closed, i.e., when the slider 3 is moved forward, the pair of element rows 22, 22 in the separated state, together with the pair of tapes 21, 21, are inserted from the forward-facing openings 45a into the element passage 45.Then the pair of element rows 22, 22 interlock on a rear side of the coupling column 43, and the pair of element rows 22, 22 are output from the rearward-facing opening 45b in the interlocking state.

[0028] Each band groove 46 is a space formed between the pair of flanges 44, 46 and the top surface of the lower sheet 42. The left and right band grooves 46, 46 are connected to the left and right sides of the element passage 45. Furthermore, since the flange 44 is provided only on the upper sheet 41 and no flange is provided on the lower sheet 42, each band groove 46 is configured in a state where the band groove 46 is connected to the element passage 45 while being pre-tensioned towards its underside.

[0029] Fig. Figure 7 is a perspective view of the slide's pull tab. As shown in the Fig. As shown in Figures 1 to 7, the pull tab 6 comprises a pull tab main body 61, which a user holds with their fingers, and a pair of arms 62, 62, extending from the left and right sides of the pull tab main body 61, and has an overall essentially U-shape. Each arm 62 is rod-shaped, and a circular ring 62a is formed at its distal section, through which the support axis 5 passes.

[0030] The outer circumference of ring 62a has a circular shape, more precisely an essentially C-shape, since arm 62 extends in a rod-like form. On the other hand, as shown in Fig. 10, which will be described in detail later, the uppermost end of the outer circumference of the ring 62a extends by a predetermined dimension 62t above the top of the slide body 4, i.e., the top of the upper leaf 41, in a state where the left and right arms 62, 62 are horizontally inclined. Therefore, the top of the slide body 4 is formed deeper than the tops of the rings 62a of the left and right arms 62, 62.

[0031] A through-hole 62b is formed on an inner circumferential side of the ring 62a, penetrating the ring 62a in a left-right direction. The pair of support axes 5, 5 of the slide body 4 is inserted into the pair of through-holes 62b, 62b. This allows the pull tab 6 to be rotatably mounted relative to the slide body 4 via the pair of support axes 5, 5.

[0032] The inner circumferential surfaces of the pair of through holes 62b, 62b each have a plastic-covered plastic section 63. The metal support shaft 5 is inserted into an inner circumference of the plastic section 63. Therefore, the support shaft 5 comes into contact with the plastic section 63 on the inner circumferential surface of the through hole 62b to generate a frictional force, thus maintaining the position of the pull tab 6 at a predetermined point and preventing it from hanging down.

[0033] As described above, in the slide from patent literature 2, the pull tab is provided with the axle section, and the upper surface of the slide body section is provided with the pair of claw sections for pivotally holding the axle section. Therefore, a pair of upwardly projecting claw sections are required on the upper surface of the slide body section, and the height of the slide body section typically increases. Furthermore, to pivotally support the axle section of the pull tab, a step is required to crimp the pair of claw sections of the slide body section with a punch or the like. On the other hand, in the present embodiment, the pair of support axles 5, 5 are provided on the left and right side faces 4a of the slide body 4, and the pair of support axles 5, 5 are inserted into the pair of through holes 62b, 62b of the pull tab 6, so that no crimping step is required during assembly.Furthermore, since the claw section for attaching the pull tab 6 to the top of the slide body 4 is not required, the top of the slide body 4 can be essentially flat as in the present embodiment, and a slide 3 with an excellent appearance that gives a neat impression can be realized.

[0034] The pull tab 6 is manufactured, for example, by die-casting a metal section (the pull tab main body 61 and the arm 62) excluding the plastic section 63, and then injection-molding the plastic section 63. The material of the plastic section 63 consists of an elastic element such as polyacetal or polyoxymethylene (POM) or thermoplastic polyurethane (TPU), i.e., an element with flexibility. This flexibility allows continuous engagement with the support axis 5. The plastic section 63 can be made of a different plastic material than POM or TPU, as long as the plastic section 63 is in contact with the support axis 5 so that the pull tab 6 can maintain its position. In this way, by manufacturing the section of the pull tab 6 that is not the plastic section 63 from metal, a pull tab 6 with good strength can be obtained.Furthermore, since most of the visible part of pull tab 6 is made of metal, pull tab 6 can have a high-quality appearance. As will be discussed later with reference to... Fig. As described in 15, the entire pull tab 6 including the plastic section 63 can be made of plastic, but from the point of view of strength it is preferable that sections other than the plastic section 63 be made of metal as in the present embodiment.

[0035] As in Fig. As shown in Figure 6, the plastic section 63 comprises a small-diameter section 63a located longitudinally in the center and having a smaller outer diameter than other sections; an outer large-diameter section 63b connected to an outer surface of the small-diameter section 63a in a left-right direction and having a larger outer diameter than the small-diameter section 63a; and an inner large-diameter section 63c connected to an inner surface of the small-diameter section 63a in a left-right direction and having a larger outer diameter than the small-diameter section 63a. The small-diameter section 63a, the outer large-diameter section 63b, and the inner large-diameter section 63c have the same inner diameter.As described above, the plastic section 63 has a shape in which the outer section 63b with a large diameter and the inner section 63c with a large diameter project in a left-right direction from both sides of the section 63a with a small diameter towards the outer diameter side.

[0036] The small-diameter section 63a and the outer large-diameter section 63b are located inside the arm 62, but the inner large-diameter section 63c is exposed on the outside of the arm 62. The inner large-diameter section 63c abuts an inner surface 62c of the arm 62 in a left-right direction. Because the arm 62 is clamped between the outer large-diameter section 63b and the inner large-diameter section 63c in a left-right direction, the plastic section 63 is prevented from protruding from the arm 62 in a left-right direction.

[0037] Lower sections of the large-diameter inner sections 63c come into contact with the left and right side surfaces 4a of the slide body 4, more precisely with the left and right side surfaces 41a of the upper blade 41. Therefore, the position of the pull tab 6 can be maintained by the frictional force between the large-diameter inner sections 63c of the plastic sections 63 and the left and right side surfaces 4a of the slide body 4, thus improving the pull tab's effectiveness in preventing it from sagging. As described above, the pull tab 6 comprises the pull tab main body 61, which a user holds with their fingers, and the pair of arms 62, 62 extending from the left and right sides of the pull tab main body 61, forming an essentially U-shape. Therefore, the two arms 62, 62 exhibit an elastic force to maintain the essentially U-shaped form of the pull tab 6.Therefore, if a spacing relationship or the like is established such that the large-diameter inner sections 63c come into contact with the left and right side faces 4a of the slide body 4 when the pair of support axes 5, 5 of the slide body 4 is inserted into the pair of through holes 62b, 62b, the pair of arms 62, 62 generates an elastic force in the left-right direction towards the inside relative to a force in the left-right direction towards the outside from the left and right side faces 4a. This allows the large-diameter inner sections 63c of the plastic sections 63 and the left and right side faces 4a of the slide body 4 to be brought into more reliable contact with each other. This generates a greater frictional force, the position of the pull tab 6 can be reliably maintained, and the effect of preventing the pull tab from sagging can be further improved.

[0038] In the example shown, the lower sections of the large-diameter inner sections 63c abut the left and right side faces 4a of the slide body 4, while the upper sections of the large-diameter inner sections 63c do not abut the left and right side faces 4a of the slide body 4. This is because the top surface of the slide body 4 has a flat shape with as few protrusions and indentations as possible, resulting in an excellent appearance. However, if a protrusion is permitted on the top surface of the slide body 4, or if the thickness of the slide body 4 is permitted to be increased, the upper sections of the large-diameter inner sections 63c can be configured to abut the left and right side faces 4a of the slide body 4.

[0039] Fig. Figure 8 is an enlarged side view of the slider from the right, showing a state in which the pull tab is pulled in the up-down direction. Fig. 9 is a view showing a state in which the pull tab is out of the state of Fig. 8 is rotated and tilted. Fig. 10 is a view showing a state in which the pull tab is rotated 90° from the state of Fig. 8 rotated and tilted so that it is vertical in the top-bottom direction.

[0040] As in the Fig. As shown in Figures 8 to 10, each support axis 5 has an essentially quadrilateral prism shape, which is essentially quadrilateral in the left-right direction. Viewed in the left-right direction, the support axis 5 shown in the drawing is not a perfect quadrilateral with chamfered corners, but it is not limited to this shape and can also be a perfect quadrilateral without chamfers.

[0041] Viewed from the left and right sides, the shape of each through-hole 62b into which the support shaft 5 is inserted is, more precisely, the shape of an inner circumferential surface of the plastic section 63 covering the through-hole 62b, similar to the shape of the support shaft 5. That is, the shape of each through-hole 62b into which the support shaft 5 is inserted is essentially a rectangular prism shape, which, viewed from the left to the right, has an essentially rectangular shape. The inner diameter of the through-hole 62b is slightly larger than the outer diameter of the support shaft 5. If the support shaft 5 has a completely rectangular shape without chamfering, then the through-hole 62b also has a completely rectangular shape without chamfering.

[0042] Fig. Figure 8 shows a state in which a phase of the substantially rectangular shape of the support axis 5 and a phase of the substantially rectangular shape of the through-hole 62b are aligned when the slide body 4 and the pull tab 6 are assembled by inserting the pair of support axes 5, 5 into the pair of through-holes 62b, 62b. When the slide body 4 and the pull tab 6 are assembled in this way, the through-hole 62b is first opened on one side (for example, the left side in Fig. 6) the pull tab 6 to the support axis 5 on one side (for example, the left side in Fig. 6) of the sliding body 4 is added. Next, the pair of arms 62, 62 are spread in a left-right direction and the through hole 62b on the other side (e.g., the right side in) is opened. Fig. 6) The pull tab 6 becomes the support axis 5 on the other side (e.g. the right side in Fig. 6) of the slide body 4 added.

[0043] So that the support axis 5 aligns the through hole 62b in a state in which the through hole 62b aligns with the support axis 5 on one side ( Fig. 6 left) is added and the pull tab 6 in Fig. 6, which is inclined counterclockwise, effectively supports, the tapered surface 5a can be provided on the upper section of a distal end section on one side of the support axis 5. The tapered surface 5a is an inclined surface that slopes downwards from the top of the support axis 5 to one side.

[0044] Similarly, the tapered surface 5b can be provided on the upper portion of a distal end section on the other side of the support axis 5. The tapered surface 5b is an inclined surface that slopes downwards by extending the upper surface of the support axis 5 to the other side. The tapered surface 5b has the function of guiding a lower portion of the ring 62a of the arm 62 on the other side to spread the pair of arms 62, 62 to the left and right when the pair of arms 62, 62 is spread in the left-right direction and the through-hole 62b to the support axis 5 on the other side of the sliding body 4 (the right side in Fig. 6) is added.

[0045] When the sliding body 4 and the pull tab 6 are assembled in this way, as shown in Fig. As shown in Figure 8, the support axis 5 and the through-hole 62b are in phase with each other. Since the support axis 5 and the through-hole 62b are identical, they do not interfere with each other during assembly, and the plastic section 63 provided in the through-hole 62b is not compressed or deformed.

[0046] If the pull tab 6 is then pulled as shown in Fig. 9 shown from the in Fig. In the state shown in Figure 8, when tilted backwards, the plastic section 63 is pressed against the outer circumferential surface of the support axis 5 at the inner circumferential surface of the through-hole 62b, causing it to deform elastically and coming into contact with the outer circumferential surface of the support axis 5, thus maintaining close contact with it. Therefore, in the state of Fig. 9 a force acting between the plastic section 63 and the support axis 5 is stronger than in the state of Fig. 8.

[0047] If the pull tab 6 is removed from the in Fig. 9 shown tilted backwards and horizontally as in Fig. As shown in Figure 10, the phases of the support axis 5 and the through hole 62b are offset by 90°, and the shapes of the support axis 5 and the through hole 62b are aligned. Therefore, in the state of Fig. 10, similar to the state of Fig. 8, the interlocking force between the plastic section 63 and the support axis 5 is eliminated.

[0048] In this example, the engagement force between the plastic section 63 and the support axis 5 is shown in the Fig. 8 equals zero; the engagement force increases when the pull tab 6 is tilted forwards or backwards and the angle of inclination approaches 45°; the engagement force decreases when the pull tab is tilted further and the angle of inclination exceeds 45° and approaches 90°; and the engagement force becomes zero when the angle of inclination reaches 90°, as shown in Fig. 10 shown.

[0049] As described above, if the support axis 5 and the through hole 62b have similar shapes other than circular ones, if the pull tab 6 is installed as shown in the diagram, the following applies: Fig. 8. Provide a position in which the through-hole 62b and the support axis 5 engage to generate a frictional force, and a position in which no frictional force is generated. Therefore, the engagement force between the through-hole 62b and the support axis 5 can be increased or decreased. This makes it easier to hold the pull tab 6 in the predetermined position.

[0050] The shape of each support axis 5 or each through-hole 62b is not particularly restricted, and a general, essentially columnar shape can be used, which is essentially circular when viewed from left to right. Even in this case, sagging of the pull tab 6 can be prevented because the plastic sections 63 come into contact with the left and right side surfaces 4a of the slide body 4 and the position of the pull tab 6 is maintained in the predetermined position.

[0051] However, as mentioned above with reference to the Fig. As described in Figures 8 to 10, the engagement force between the through-hole 62b and the support axis 5 can be increased or decreased by specifying the shape of each support axis 5 or through-hole 62b to a shape similar to a substantially square shape instead of a circular shape. Therefore, the shape of each support axis 5 or through-hole 62b is preferably a substantially polygonal prism shape, which, when viewed in the left-right direction, has a substantially polygonal shape; a columnar shape, which, when viewed in the left-right direction, has a substantially teardrop shape; a columnar shape, which, when viewed in the left-right direction, has a substantially elliptical shape; or the like. The following are described with reference to the Fig. Modifications 11 to 13 are explained, in which the shape of each support axis 5 or each through hole 62b is a column shape which, viewed from left to right, is essentially teardrop-shaped.

[0052] Fig. Figure 11 is an enlarged side view of a slider according to a modification, seen from the right, showing a state in which a pull tab is pulled in the top-down direction. Fig. 12 is a view showing a state in which the pull tab is out of the state of Fig. It is rotated and tilted at 11. Fig. 13 is a view showing a state in which the pull tab is rotated 90° out of the in Fig. The state shown in Figure 11 is rotated and tilted so that it is vertical in the top-bottom direction.

[0053] If the slider body 4 and the pull tab 6 are as shown in Fig. As shown in Figure 11, when assembled, the phases of the support axis 5 and the through-hole 62b are aligned. Viewed from the left and right, the shape of the support axis 5 and the through-hole 62b is a so-called teardrop shape, with the underside having an arc shape and the top having a pointed shape. Since the support axis 5 and the through-hole 62b are identical, they do not interfere with each other during assembly, and the plastic section 63 provided in the through-hole 62b is not compressed or deformed.

[0054] If the pull tab 6 is then pulled as shown in Fig. 12 shown from the in Fig. In the state shown in Figure 11, when the plastic section 63 is tilted backwards, the pointed section above the support axis 5 is pressed against the inner circumferential surface of the through-hole 62b by the pointed section, causing it to deform elastically and come into contact with the outer circumferential surface of the support axis 5, forming close contact with it. Therefore, in the state of Fig. 12 the engagement force between the plastic section 63 and the support axis 5 is stronger than in the state of Fig. 11.

[0055] If the pull tab 6 is removed from the in Fig. 12 shown state tilted backwards and horizontal as in Fig. As shown in Figure 13, the plastic section 63 is placed on the inner circumferential surface of the through-hole 62b and is further strongly pressed and elastically deformed by the pointed section above the support axis 5. Therefore, in the state of Fig. 13 the engagement force between the plastic section 63 and the support axis 5 is stronger than in the state of Fig. 12.

[0056] As described above, in the present modification the engagement force between the plastic section 63 and the support axis 5 is in the Fig. In the state shown in Figure 11, the engagement force increases when the pull tab 6 is tilted forward or backward and the tilt angle approaches 90°, and the engagement force is maximized when the tilt angle reaches 90°, as shown in Figure 11. Fig. Figure 12 shows that, therefore, in the present modification, it is also possible to specify the position at which the through-hole 62b and the support axis 5 engage to generate a frictional force, and the position at which no frictional force is generated. Thus, the engagement force between the through-hole 62b and the support axis 5 can be increased or decreased. This makes it easier to hold the pull tab 6 stationary in a predetermined position.

[0057] Furthermore, the present invention is not limited to the above embodiment, but can be appropriately modified, improved and the like within the practical scope.

[0058] Fig. Figure 14 shows an example where the pull tab 6 is provided with a recess 62d instead of the through hole 62b. As in Fig. As shown in Figure 14, the pull tab 6 has a pair of recesses 62d, 62d into which the pair of support axes 5, 5 is inserted. Each of the two recesses 62d, 62d has the plastic-covered plastic section 63. As in the embodiment above, the plastic section 63 has a small-diameter section 63a, an outer large-diameter section 63b, and an inner large-diameter section 63c, but differs from the first embodiment in that the outer large-diameter section 63b has a stable disc shape instead of the annular shape with the through-hole. Therefore, the outer large-diameter section 63b forms a base surface of the recess 62d. As described above, the same effect as in the embodiment above can be achieved even if the recess 62d is provided instead of the through-hole 62b.

[0059] The entire pull tab 6 including the plastic section 63 of the through hole 62b or the recess 62d can be made of plastic. Fig. Figure 15 shows an example where the entire pull tab 6, including the through-hole 62b, is made of plastic. As described above, the strength is somewhat lower than in the case where the sections other than the plastic section 63 are made of metal, as in the embodiment above, when the entire pull tab 6 is made of plastic, but shaping is facilitated.

[0060] As described above, the following points are revealed in this description.

[0061] [1] A slider (3) for a zipper, comprising: a slider body (4) made of metal; a pair of support axes (5, 5) made of metal, projecting to the left and right from the left and right side faces (4a) of the slider body (4); and a pull tab (6) rotatably supported by the pair of support axes (5, 5), the pull tab (6) having a pair of through holes (62b) or a pair of recesses (62d) into which the pair of support axes (5, 5) is inserted, and each of the through holes (62b) or recesses (62d) having a plastic-covered plastic section (63).

[0062] According to this configuration, the inner circumferential surfaces of the pair of through holes (62b, 62b) each have the plastic-covered plastic section (63), and the metal support shaft (5) is inserted into an inner circumference of the plastic section (63). Therefore, the support shaft (5) comes into contact with the plastic section (63) at the inner circumferential surface of the through hole (62b) to generate a frictional force, thus maintaining the position of the pull tab (6) at a predetermined position and preventing it from hanging down.

[0063] [2] The slider (3) for the zipper according to point [1], wherein the plastic section (63) comes into contact with each of the left and right side surfaces (4a) of the slider body (4).

[0064] According to this configuration, the position of the pull tab (6) can be maintained by a frictional force between the plastic sections (63) and the left and right side surfaces (4a) of the slider body (4), thereby improving the effect of preventing the pull tab from hanging down.

[0065] [3] Slider (3) for the zipper according to point [1] or [2], wherein the shape of the pair of through holes (62b) or of the pair of recesses (62d) and the shape of the pair of support axes (5, 5) are similar when viewed from the left and right sides except for a circular shape.

[0066] According to this configuration, if the support axis (5) and the through-hole (62b) are of a similar, non-circular shape, it is possible to provide a position in which the through-hole (62b) and the support axis (5) engage to generate a frictional force, and a position in which the frictional force is not generated when the pull tab (6) is rotated relative to the support axis (5). Therefore, the engagement force between the through-hole (62b) and the support axis (5) can be increased or decreased. This makes it easier to hold the pull tab (6) stationary in a predetermined position.

[0067] [4] The slider (3) for the zipper according to point [3], wherein one shape of the pair of through holes (62b) or the pair of recesses (62d) and one shape of the pair of support axes (5, 5) are essentially polygonal when viewed from the left and right sides. This configuration allows the engagement force between the through hole (62b) and the support axis (5) to be increased or decreased, making it easier to keep the pull tab (6) stationary in the predetermined position.

[0068] [5] The slider (3) for the zipper according to point [3], wherein the shape of the pair of through holes (62b) or the pair of recesses (62d) and the shape of the pair of support axes (5, 5) are essentially teardrop-shaped when viewed from the left and right sides.

[0069] This configuration allows the engagement force between the through hole (62b) and the support axis (5) to be increased or decreased, making it easier to keep the pull tab (6) stationary in the predetermined position.

[0070] [6] The slider (3) for the zipper according to one of points [1] to [5], wherein a section of the pull tab (6) other than the plastic section (63) is made of metal.

[0071] This configuration allows for a pull tab (6) with good strength. Furthermore, since most of the visible part of the pull tab (6) is made of metal, the pull tab (6) can have a high-quality appearance.

[0072] [7] Slider (3) for the zipper according to one of points [1] to [5], wherein the pull tab (6) including the plastic section (63) is made entirely of plastic.

[0073] This configuration makes it easy to form the pull tab (6). REFERENCE MARK LIST 1 zipper 2 zipper tapes Volume 21 22 element series 22a Element 3 sliders (sliders for a zipper) 4 slide bodies 4a left and right side surface 41 top sheet 41a left and right side surface 42 lower sheet 43 Clutch column 44 flange 45 element passes 45a forward-facing openings 45b rearward-facing openings 46 Band groove 5 Support axle 5a, 5b Rejuvenation area 6 pull tab 61 Pull tab main body 62 Arm 62a Ring 62b Through hole 62c Inner surface in left-right direction 62t ​​predetermined dimensions 62d recess 63 Plastic section 63a Small diameter section 63b large diameter outer section 63c large diameter inner section QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2007-54176

[0003] WO 2016 / 135897A1

[0003]

Claims

[1] Slider (3) for a zipper, comprising the following: a sliding body (4) made of metal; a pair of metal support axes (5, 5) projecting to the left and right from the left and right side faces (4a) of the slide body (4); and a pull tab (6) which is rotatably supported by the pair of support axes (5, 5), wherein the pull tab (6) has a pair of through holes (62b) or a pair of recesses (62d) into which the pair of support axes (5, 5) is inserted, and wherein each of the through holes (62b) or recesses (62d) has a plastic-covered plastic section (63). [2] Slider (3) for the zipper according to claim 1, wherein the plastic section (63) comes into contact with each of the left and right side surfaces (4a) of the slider body (4). [3] Slider (3) for the zipper according to claim 1 or 2, wherein a shape of the pair of through holes (62b) or of the pair of recesses (62d) and a shape of the pair of support axes (5, 5) are similar when viewed from the left and right sides and are not circular shapes. [4] Slider (3) for the zipper according to claim 3, wherein a shape of the pair of through holes (62b) or of the pair of recesses (62d) and a shape of the pair of support axes (5, 5) are substantially polygonal when viewed from the left and right sides. [5] Slider (3) for the zipper according to claim 3, wherein a shape of the pair of through holes (62b) or of the pair of recesses (62d) and a shape of the pair of support axes (5, 5) are substantially teardrop-shaped when viewed from the left and right sides. [6] Slider (3) for the zipper according to one of claims 1 to 5, wherein a section of the pull tab (6) other than the plastic section (63) is made of metal. [7] Slider (3) for the zipper according to any one of claims 1 to 5, wherein the pull tab (6) including the plastic section (63) is made entirely of plastic.

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