SLIDE FASTENER SLIDER AND METHOD FOR PRODUCING SLIDE FASTENER SLIDER

Abstract

A slider for a slide fastener includes: a metal slider body which includes an upper blade, a lower blade, and a connecting column connecting the upper blade and the lower blade at front sides thereof, a stringer passage which allows facing side edge portions of a pair of fastener stringers to pass therethrough being formed on an inner side of the slider body; and a component which is accommodated in the slider body. The slider body includes a recess which is recessed on a surface of the slider body and in which the component is accommodated, and a dedicated vent hole which allows ventilation between an outside of the slider body including the stringer passage, which is outside the slider body, and an inside of the recess.

Claims

1. A slider for a slide fastener comprising: a metal slider body which includes an upper blade, a lower blade, and a connecting column connecting the upper blade and the lower blade at front sides thereof, a stringer passage which allows facing side edge portions of a pair of fastener stringers to pass therethrough being formed on an inner side of the slider body; and a component which is accommodated in the slider body, wherein the slider body includes a recess which is recessed on a surface of the slider body and in which the component is accommodated, and a dedicated vent hole which allows ventilation between an outside of the slider body including the stringer passage, which is outside the slider body, and an inside of the recess.

2. The slider for the slide fastener according to claim 1, wherein the recess is formed at least in the upper blade among the upper blade and the connecting column.

3. The slider for the slide fastener according to claim 1, wherein the vent hole penetrates in a front-rear direction.

4. The slider for the slide fastener according to claim 1, wherein a vent hole outer portion of the vent hole which is on an outer portion side of the slider body is narrowed in diameter from an outer opening end toward an inner opening end of both ends of the vent hole.

5. The slider for the slide fastener according to claim 4, wherein a vent hole inner portion of the vent hole which is on a side of the recess is narrowed in diameter from the inner opening end toward the outer opening end of the both ends of the vent hole.

6. The slider for the slide fastener according to claim 1, wherein the recess includes a first recess formed on an upper surface of the upper blade, and a hole-shaped second recess which is in communication with an inside of the first recess and an inside of the vent hole and which has a boundary surface at a boundary with respect to the vent hole, and the component includes a second component accommodated in the second recess, and a first component disposed in the first recess and holding the second component in the second recess.

7. The slider for the slide fastener according to claim 6, further comprising: a pull holder which extends upward from the upper blade and is configured to hold a pull and which has a tip end portion facing the upper surface of the upper blade, in addition to the slider body and the components, wherein the components include an elastic body as the second component and a deformation member as the first component which is configured to elastically deform the elastic body in response to an operation on the pull.

8. The slider for the slide fastener according to claim 7, wherein the second recess is formed in a front portion of the slider body, the deformation member is an opening and closing member which is attached to the first recess and is configured to open and close a gap formed between a tip end of the pull holder and the upper blade, and which is configured to be guided to be movable forward, and the opening and closing member opens the gap and elastically deforms the elastic body at a front limit position, and closes the gap and is held by the upper blade at a rear limit position.

9. The slider for the slide fastener according to claim 1, wherein a plating film is formed on the surface of the slider body and is formed on a surface of the vent hole over an entire length thereof in a vent direction.

10. A method for manufacturing a slider for a slide fastener, comprising: a die casting step of manufacturing, by die casting, a metal slider body which includes an upper blade, a lower blade, and a connecting column connecting the upper blade and the lower blade at front sides thereof, a stringer passage which allows facing side edge portions of a pair of fastener stringers to pass therethrough being formed on an inner side of the slider body, and which includes a recess recessed on a surface of the slider body and accommodating a component; and a hole forming step of forming a hole in a part which shapes the recess, so as to form a dedicated vent hole which allows ventilation between an outside of the slider body -including the stringer passage, which is outside the slider body-, and an inside of the recess.

11. The method for manufacturing the slider for the slide fastener according to claim 10, wherein the recess of the slider body manufactured in the die casting step includes a recess main body in a constant state at a completion time point of the die casting step and at a completion time point of the hole forming step, and a non-penetrating hole portion which is recessed with respect to the recess main body in a non-penetrating state at the completion time point of the die casting step and which is obtained by thinning a part which shapes the recess main body, and in the hole forming step, the non-penetrating hole portion is penetrated to form a part of the vent hole.

12. The method for manufacturing the slider for the slide fastener according to claim 11, wherein a vent hole inner portion of the vent hole which is on a side of the recess corresponds to the non-penetrating hole portion at the completion time point of the die casting step, and is narrowed in diameter from an inner opening end toward an outer opening end of both ends of the vent hole.

13. The method for manufacturing the slider for the slide fastener according to claim 11, wherein the hole forming step is press processing using a punch whose tip portion has a tapered conical shape, and a vent hole outer portion of the vent hole which is on an outer portion side of the slider body is narrowed in diameter from an outer opening end toward an inner opening end of both ends of the vent hole.

14. The method for manufacturing the slider for the slide fastener according to claim 11, further comprising: a wet plating step of performing wet plating on the slider body after the hole forming step.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0036] FIG. 1 is a cross-sectional view showing portions of a slider other than a pull according to a first embodiment of the present invention, and is a cross-sectional view taken along a line I-I of FIG. 2.

[0037] FIG. 2 is a view of the portions of the slider other than the pull according to the first embodiment as viewed from front.

[0038] FIG. 3 is an exploded perspective view showing the slider according to the first embodiment.

[0039] FIG. 4 is a perspective view showing a state in which portions of the slider other than a pull according to the first embodiment are attached.

[0040] FIG. 5 is a side view showing the slider according to the first embodiment.

[0041] FIG. 6 is a view of a slider body of the slider according to the first embodiment as viewed from rear.

[0042] FIG. 7 is a cross-sectional view showing a state immediately before a hole is formed in the slider body in a method for manufacturing the slider according to the first embodiment.

[0043] FIG. 8 is a cross section showing a state in which the hole is formed in the slider body in the method for manufacturing the slider according to the first embodiment.

[0044] FIG. 9 is a cross-sectional view showing an outline of a slider according to a second embodiment.

[0045] FIG. 10 is a cross-sectional view showing an outline of a slider according to a third embodiment.

DESCRIPTION OF EMBODIMENTS

[0046] Although not shown, a slide fastener includes, as a basic configuration, a pair of fastener stringers extending in parallel and in a straight line in a state of being placed on a plane, and a slider movable along facing side edge portions of the pair of fastener stringers. Further, the fastener stringer includes a tape extending in a straight line, and an element row fixed to a facing side edge portion of the tape. The element row of one fastener stringer and the element row of another fastener stringer are meshed or separated depending on a moving direction of the slider. More specifically, by moving the slider in one direction in which the fastener extends, the pair of element rows are meshed according to a movement amount to close the pair of fastener stringers, and by moving the slider in another direction of the extending direction of the fastener, the pair of element rows are separated according to the movement amount to close the pair of fastener stringers.

[0047] Hereinafter, a direction is determined as follows.

[0048] A front-rear direction is a direction in which the slider is moved, and is a direction in which the pair of fastener stringers are opened and closed. The front-rear direction is a direction orthogonal to a paper surface of FIG. 2. FIG. 2 is a view of a slider 1 viewed from front.

[0049] A left-right direction is a direction orthogonal to the front-rear direction, and is a direction in which the slider 1 separates a pair of element rows. The left-right direction is a left-right direction in FIG. 2. However, a left direction is a right direction in FIG. 2, and a right direction is a left direction in FIG. 2.

[0050] An upper-lower direction is a direction orthogonal to the front-rear direction and the left-right direction, and coincides with an upper-lower direction in FIG. 2.

[0051] The slider 1 according to a first embodiment of the present invention is shown alone in FIGS. 1 to 5. That is, the slider 1 shown in FIGS. 1 to 5 is not attached to the pair of fastener stringers. In FIGS. 1, 2, and 4, the pull is not shown. Further, as shown in FIGS. 1 and 3, the slider 1 includes a slider body 2 for meshing and separating a pair of element rows when attached to a pair of fastener stringers; a pull holder 3 extending upward from an upper surface of the slider body 2; a pull 4 attached to the pull holder 3 from a gap G formed between a tip portion of the pull holder 3 and the upper surface of the slider body 2; and a plurality of components 5, 6 attached to the slider body 2.

[0052] The components 5, 6 include an opening and closing member 5 which is disposed (held) on the slider body 2 in order to open and close the gap G for attaching the pull and which is guided to be movable forward, and a compression coil spring 6 which is accommodated in the slider body 2 and which is contracted (elastically deformed) by the opening and closing member 5. As to be described later, in the first embodiment, the opening and closing member 5 is a first component, and the compression coil spring 6 is a second component.

[0053] An outline of the opening and closing member 5 is configured such that at a front limit position, the compression coil spring 6 is elastically deformed in a manner of being contracted, and the gap G is opened to an extent that the pull 4 can be attached. Further, at a rear limit position, the opening and closing member 5 is held in the slider body 2 with the gap G closed (narrowed), and the compression coil spring 6 is held in a state of being accommodated in the slider body 2. Details of a configuration of the opening and closing member 5 will be described later.

[0054] The pull 4 is pinched when the slider body 2 is moved in a state where the pull 4 is attached to the slider body 2. As shown in FIG. 3, the pull 4 includes a plate-shaped pull main body portion 41 which can be pinched by fingers, and an annular connecting ring 42 which is formed at an end of the pull main body portion 41 and which is connected to the pull holder 3 through the gap G.

[0055] As shown in FIGS. 1 and 2, the slider body 2 includes an upper blade 21 and a lower blade 22 that face each other with an interval therebetween in the upper-lower direction; a connecting column 23 which connects front portions of the upper blade 21 and the lower blade 22 to each other while extending in the upper-lower direction, and which is sandwiched between the pair of element rows; and flanges 24 which protrude from left and right end portions of at least one (both in the illustrated example) of the upper blade 21 and the lower blade 22 in a direction in which an interval between the upper blade 21 and the lower blade 22 is reduced.

[0056] Further, as shown in FIGS. 2 and 5, a stringer passage 25 allowing facing side edge portions of the pair of fastener stringers to pass therethrough is formed inside the slider body 2. The stringer passage 25 includes an element passage 26 which penetrates in the front-rear direction between the upper blade 21 and the lower blade 22, and which branches in a manner of being a single passage on a rear side and being two passages on a front side with the connecting column 23 as a boundary, that is, which branches into two passages to the left and right on the front side; and tape grooves 27 which are opened to the left and right while being in communication with the element passage 26 between the flanges 24 on the left and right end portions of the upper blade 21 and the lower blade 22. A pair of element rows passes through the element passage 26, and a tape on a corresponding side passes through the tape groove 27. It is assumed that an outside of the slider body 2 includes the stringer passage 25.

[0057] As shown in FIGS. 1 and 5, the pull holder 3 protrudes from a front portion of the upper surface of the upper blade 21 and extends toward a rear portion of the upper surface of the upper blade 21, and a tip end portion of the pull holder 3 faces the upper surface of the upper blade 21. More specifically, the pull holder 3 has a shape of protruding upward from a left-right intermediate portion on the front portion of the upper surface of the upper blade 21, extending rearward from an upper end portion, and then extending downward from a rear end portion. Further, a tip end of the pull holder 3 is located upward with respect to a position (base position) at which the pull holder 3 protrudes from the upper blade. Therefore, in a side view, the gap G for the connecting ring 42 of the pull 4 to pass therethrough is formed between the upper surface of the upper blade 21 and the tip end of the pull holder 3.

[0058] The pull holder 3 and the slider body 2 are made of metal such as an aluminum alloy or a zinc alloy, and are integrally formed products manufactured by die casting.

[0059] The compression coil spring 6 is made of, for example, metal.

[0060] As shown in FIGS. 1 to 3, the upper blade 21 includes a recess 7 which is recessed from the upper surface in surfaces of the upper blade 21 and in which a component disposed outside the stringer passage 25 is accommodated; a vent hole H1 which is formed in the front portion of the upper blade 21 while allowing ventilation between an inside of the recess 7 and the outside of the slider body 2; and a pair of holding portions 28 which hold the opening and closing member 5 at a position where the gap G is closed while protruding outward to the left and right with respect to the recess 7 on the upper surface.

[0061] As shown in FIG. 1, the recess 7 includes a first recess 8 formed in the upper surface of the upper blade 21, and a hole-shaped second recess 9 having a boundary surface B1 at a boundary with the vent hole H1 while being in communication with an inside of the first recess 8 and an inside of the vent hole H1. A clear difference between the first recess 8 and the second recess 9 is the presence or absence of the boundary surface B1. In other words, since an inside of the second recess 9 is in direct communication with the inside of the vent hole H1, the inside of the first recess 8 is in communication with the inside of the vent hole H1 via the inside of the second recess 9 although the boundary surface B1 exists in the second recess 9, so that the boundary surface B1 does not exist in the first recess 9.

[0062] As shown in FIG. 3, the first recess 8 includes a guide groove portion 81 which is formed in a left-right intermediate portion on the rear portion of the upper surface of the upper blade 21 and which guides the opening and closing member 5 movably forward and rearward; and an insertion groove portion 82 which is recessed from a bottom surface (lower surface) of the guide groove portion 81 and into which the compression coil spring 6 is inserted. More specifically, the first recess 8 includes the guide groove portion 81 and a part of the insertion groove portion 82. The other part of the insertion groove portion 82 serves as the second recess 9. This will be described later. Regarding the upper surface, the rear portion of the upper blade 21 is lower than a portion in front in a stepped manner.

[0063] The pair of holding portions 28 are formed on the left and right of the guide groove portion 81 on the portion which is lowered in a stepped manner. The holding portion 28 stands upright in an upward direction as shown in FIG. 3 before the opening and closing member 5 is attached, and after the opening and closing member 5 is attached, tip ends of the holding portions 28 are crimped (plastically deformed) to approach in the left and right as shown in FIG. 4 to suppress the opening and closing member 5 from moving rearward and to determine the rear limit position of the opening and closing member 5.

[0064] As shown in FIG. 7, the guide groove portion 81 extends from a rear end of the upper blade 21 toward the base position passing through the tip end of the pull holder 3 in the front-rear direction. In addition, in the front-rear direction, the guide groove portion 81 includes a groove-shaped guide groove main body portion 81b which is opened above the upper blade 21 and a hole-shape guide groove hole portion 81c which extends forward from a portion below the guide groove main body portion 81b. A portion of the guide groove main body portion 81b that is opened above the upper blade 21 is defined as an opening portion 81a.

[0065] As shown in FIG. 6, the guide groove main body portion 81b is formed at the same position as the tip end of the pull holder 3 regarding a position in the left-right direction. Regarding a width in the left-right direction, a front portion of the opening portion 81a is narrower than a rear portion of the opening portion 81a as shown in FIG. 3. In other words, regarding the width in the left-right direction, an upper portion of a front portion of the guide groove main body portion 81b is a narrow portion narrower in the left-right direction than a rear portion of the guide groove main body portion 81b, and a lower portion of the front portion of the guide groove main body portion 81b is a wide portion having the same width as the rear portion of the guide groove main body portion 81b. Left and right end portions of the opening and closing member 5 are fitted and guided on left and right sides of the wide portion.

[0066] In addition, regarding the width in the left-right direction, the rear portion of the guide groove main body portion 81b has the same width over an entire length before the pair of holding portions 28 are crimped as shown in FIG. 3, but in a crimped state, as shown in FIG. 4, the rear portion of the guide groove main body portion 81b is narrower than that in the state before the crimping at a height position where tip portions of the pair of holding portions 28 approach each other in the left-right direction.

[0067] The opening and closing member 5 holds the compression coil spring 6 in the insertion groove portion 82. As shown in FIG. 3, the opening and closing member 5 includes a movable body portion 51 which moves along the guide groove portion 81; a shutter portion 52 which opens and closes the gap G while protruding from a center portion in the front-rear direction of an upper surface of the movable body portion 51; and a pair of guide piece portions 53 which are guided in a state of being fitted to the left and right of the guide groove portion 81 and protruding laterally from intermediate portions in the front-rear direction of left and right side surfaces of the movable body portion 51. A left-right center portion on a lower surface of the movable body portion 51 protrudes to be fitted with the insertion groove portions 82. As shown in FIG. 4, in a state where the opening and closing member 5 is attached to the slider body 2, the pair of holding portions 28 in a crimped state is disposed behind the pair of guide piece portions 53 to determine the rear limit position of the opening and closing member 5.

[0068] As shown in FIG. 3, the insertion groove portion 82 extends in the front-rear direction and is formed in a left-right intermediate portion of the lower surface of the guide groove main body portion 81b. As shown in FIG. 7, the insertion groove portion 82 extends forward with respect to the guide groove hole portion 81c of the guide groove portion 81. A front end of the insertion groove portion 82 is rearward with respect to a front surface of the upper blade 21 of the slider body 2. A rear portion of the insertion groove portion 82 has a groove shape opened upward and rearward, and is a portion at which a lower portion of the compression coil spring 6 is temporarily placed when the compression coil spring 6 is attached to the slider body 2. On the other hand, a front portion of the insertion groove portion 82 has a hole shape, and is a portion which accommodates the compression coil spring 6 in a state where an outer peripheral surface of the compression coil spring 6 is positioned from front, rear, left and right sides. The upper blade 21 includes a wall portion 83 in front of the front portion of the insertion groove portion 82.

[0069] As shown in FIG. 1, the wall portion 83 is formed in a state where a diameter of the insertion groove portion 82 is narrowed. The dedicated vent hole H1 is formed in a center of the wall portion 83 to allow ventilation between an inside of a hole in the front portion of the insertion groove portion 82, and the outside of the slider body 2. Therefore, a rear surface of the wall portion 83 is the boundary surface B1 with respect to the vent hole H1, and the front portion of the insertion groove portion 82 has the boundary surface B1, so that the insertion groove portion 82 is the second recess 9 in the first embodiment. Further, a portion of the recess 7 other than the second recess 9, more specifically, the rear portion of the insertion groove portion 82 and the guide groove portion 81 is the first recess 8 in the first embodiment. Further, what is accommodated in the second recess 9 is the second component, and is the compression coil spring 6 serving as an elastic body in the first embodiment. Further, what is disposed in the first recess 8 is the first component, and is the opening and closing member 5 serving as a deformation member that elastically deforms the elastic body 6 in response to an operation on the pull 4 in the first embodiment. The operation on the pull 4 is an operation of attaching the pull 4 in the first embodiment. In this operation, the opening and closing member 5 moves forward to expand the gap G for attaching the pull, and the connecting ring 42 of the pull 4 is connected to the pull holder 3 while passing therethrough. The compression coil spring 6 and the opening and closing member 5 are disposed outside the stringer passage 25.

[0070] The vent hole H1 is formed directly below the upper surface of the upper blade 21.

[0071] The vent hole H1 is a hole penetrating in the front-rear direction, which is a depth direction thereof. Air is filled in an internal space of the vent hole H1, and no component is disposed. The vent hole H1 is dedicated for ventilation. As shown in FIGS. 2 and 6, when viewed from the depth direction, the vent hole H1 is a circular hole, while the front portion of the insertion groove portion 82, which is the second recess 9, is a hole larger in shape than the vent hole H1, specifically, a rectangular hole. That is, the vent hole H1 and the second recess 9 have different shapes.

[0072] As shown in FIG. 1, the vent hole H1 has different shapes in an entire length thereof at a vent hole outer portion H1a on an outer portion side of the slider body 2 and a vent hole inner portion H1b on a recess 7 side. More specifically, the vent hole outer portion H1a is narrowed in diameter from an outer opening end toward an inner opening end (toward the vent hole inner portion H1b) in both ends of the vent hole H1. The vent hole inner portion H1b is narrowed in diameter from the inner opening end toward the outer opening end (the vent hole outer portion H1a) of the both ends of the vent hole H1. Although the vent hole inner portion H1b will be described in detail later, at a completion time point of die casting, the vent hole outer portion H1a is a non-penetrating hole portion which is closed.

[0073] The vent hole H1 is formed in a straight line, and an inclination angle 1 of the vent hole outer portion H1a with respect to the depth direction is larger than an inclination angle 2 of the vent hole inner portion H1b. As an example, the inclination angle 1 of the vent hole outer portion H1a is an acute angle, for example, an angle of 10 degrees to 40 degrees with respect to the front-rear direction. More preferably, the inclination angle 1 is 20 degrees.

[0074] A plating film (not shown) is formed on the slider 1. In addition to the pull 4, the plating film is formed on a surface of the slider 1 which is in contact with air in a state where the compression coil spring 6 and the opening and closing member 5 are attached to the slider body 2. The insertion groove portion 82 in which the compression coil spring 6 is accommodated is in communication, at a rear part thereof, with the outside of the slider body 2 through a gap between the opening and closing member 5 and the upper surface of the upper blade 21, and is in communication, at a front part thereof, with the outside of the slider body 2 through the vent hole H1. The plating film is formed on the slider 1 by wet plating. Specifically, the plating film is at least formed on a surface of the slider body 2, a surface of the pull holder 3, a surface of the opening and closing member 5, a surface (inner surface) of the recess 7, a surface (inner surface) of the vent hole H1 in a range over an entire length thereof in a vent direction, and a surface of the elastic body (compression coil spring 6) serving as the second component in a range over an entire length thereof in the vent direction. The surface of the slider body 2 can be explained in terms of the upper blade 21 which constitutes a part of the slider body 2 as follows. The surface of the upper blade 21 is the upper surface, a lower surface, left and right side surfaces, a rear surface, and a front surface of the upper blade 21. The same applies to the surfaces of the lower blade 22 and the connecting column 23 constituting other parts of the slider body 2.

[0075] A method for manufacturing the slider 1 according to the first embodiment described above includes a die casting step of manufacturing the metal slider body 2 by die casting using a mold in which the recess 7 is formed; a hole forming step of forming a dedicated vent hole H1 that allows ventilation between the outside of the slider body 2 including the stringer passage 25 outside the slider body 2 and the inside of the recess 7 by forming a hole in a part that shapes the recess 7; an attachment step of attaching the opening and closing member 5 and the compression coil spring 6 as components after the hole forming step; and a wet plating step of performing wet plating on the slider body 2, to which the components are attached, after the hole forming step. At a completion time point of the wet plating step, the pull 4 is not attached. The pull 4 is attached after completion of the wet plating step and after the plating film is sufficiently dried.

[0076] As shown in FIG. 7, the recess 7 of the slider body 2 manufactured in the die casting step includes a recess main body 71 in a constant state at the completion time point of the die casting step and a completion time point of the hole forming step, and a non-penetrating hole portion 72 which is recessed with respect to the recess main body 71 in a non-penetrating state at the completion time point of the hole forming step and which is obtained by thinning a part (wall portion 83) that shapes the recess main body 71. The recess main body 71 corresponds to the recess 7 in the slider 1 according to the first embodiment. Further, the non-penetrating hole portion 72 corresponds to the vent hole inner portion H1b in the slider according to the first embodiment, and more specifically, corresponds to a non-penetrating portion in which the vent hole inner portion H1b closes the vent hole outer portion H1a. Further, the non-penetrating hole portion 72 is obtained by providing a so-called extraction taper for opening the mold after injecting molten metal into the mold, and therefore, the vent hole inner portion H1b is narrowed in diameter from the inner opening end of the both ends of the vent hole H1 toward the vent hole outer portion H1a.

[0077] In the hole forming step, as shown in FIG. 8, the non-penetrating hole portion 72 is penetrated to become a part of the vent hole H1. Here, press processing is used for the hole forming step. A punch P for hole forming is moved back and forth, for a portion of the wall portion 83 forming a bottom of the non-penetrating hole portion 72, from an opposite side of an internal space of the non-penetrating hole portion 72 which is outside the slider body 1 (a front surface side of the slider body 1 in the first embodiment) toward the non-penetrating hole portion 72, and thus the non-penetrating hole portion 72 is penetrated and the vent hole H1 is formed. In other words, a direction in which the punch P is moved forth to break through the portion of the wall portion 83 forming the bottom of the non-penetrating hole portion 72 is the same as a direction from the bottom to an inlet of the non-penetrating hole portion 72. Further, the direction in which the punch P is moved back from the portion forming the bottom is the same as a direction from the inlet to the bottom of the non-penetrating hole portion 72.

[0078] A thickness of the portion of the wall portion 83 forming the bottom of the non-penetrating hole portion 72 (a shortest distance between the non-penetrating hole portion 72 and the outside of the slider body 1 when measured in a depth direction of the non-penetrating hole portion 72) is, for example, 0.1 mm or less, and can be easily penetrated by the punch P.

[0079] A tip portion of the punch P has a tapered conical shape, and is inclined, for example, by 10 degrees to 40 degrees with respect to the front-rear direction. Therefore, the vent hole outer portion H1a is narrowed in diameter from the outer opening end of the both ends of the vent hole H1 toward the vent hole inner portion H1b. In addition, since the punch P is moved back and forth from the opposite side of the internal space of the non-penetrating hole portion 72 which is the outer side of the slider body 1 toward the non-penetrating hole portion 72 and the non-penetrating hole portion 72 is penetrated, burrs (not shown) generated due to the hole forming step are pressed to the inside of the vent hole H1, and an appearance quality of the slider body 1 is not deteriorated. The burrs extend from the outer opening end of the both ends of the vent hole H1 toward the vent hole inner portion H1b.

[0080] In the attachment step, the compression coil spring 6 as an elastic body is inserted into the front portion of the insertion groove portion 82 which is the second recess of the slider body 2, and thereafter the opening and closing member 5 as a deformation member is fitted into the guide groove portion 81 of the first recess 8, and the pair of holding portions 28 are crimped to attach the opening and closing member 5 to the slider body 2.

[0081] The wet plating used in the wet plating step is a method in which electricity flows in an aqueous solution containing ionized metal, or in which a metal film (plating film) is formed on a surface of an object using a chemical reaction in which a reducing agent is used. Typical examples of the wet plating include electroplating and chemical plating, and the electroplating is used in the present embodiment.

[0082] The electroplating is performed by placing a product (slider body 2 to which the components are attached) into an aqueous solution in a treatment tank, disposing a copper plate on an anode in the treatment tank, disposing a product which is a conductive material on a cathode, and applying electricity. Electrons are supplied from a minus terminal to a cathode side, and the copper on an anode side becomes copper ions and moves to the cathode side. The copper ions react with the electrons to form copper and deposit on the surface of the cathode to form a metal film on a surface of the product. Thereafter, polishing and clear coating are performed, and the wet plating step is completed.

[0083] Since the slider 1 according to the first embodiment manufactured by the method for manufacturing the slider 1 according to the first embodiment described above includes the dedicated vent hole H1 in addition to the recess 7 formed on the surface of the slider body 2, for example, as compared with a slider without the vent hole H1, even when a liquid inducing corrosion enters the recess 7, it is easy to discharge the liquid, the corrosion resistance is improved, and a good appearance quality can be maintained for a long period of time.

[0084] In addition, in the slider 1 according to the first embodiment, since the vent hole H1 is formed to penetrate in the front-rear direction, the appearance is less likely to be influenced, for example, as compared with a case where the vent hole is formed on the upper surface of the slider.

[0085] In addition, in the slider 1 according to the first embodiment, the vent hole outer portion H1a is narrowed in diameter from the outer opening end toward the inner opening end (vent hole inner portion H1b) of the both ends of the vent hole H1, and thus it is difficult for the liquid inducing corrosion to enter from the vent hole H1.

[0086] Further, in the slider 1 according to the first embodiment, since the vent hole inner portion H1b is narrowed in diameter from the inner opening end toward the outer opening end (vent hole outer portion H1a) of the both ends of the vent hole H1,it is easy to discharge the liquid, once entering the second recess 9, from the vent hole H1, for example, as compared with a case where the vent hole inner portion H1b is narrowed in diameter from the vent hole outer portion H1a toward the inner opening end (second recess 9) similarly to the vent hole outer portion H1a.

[0087] Further, the slider according to the first embodiment has a complicated shape including the first recess 8 and hole-shaped second recess 9 in which the recess 7 is formed on the upper surface of the upper blade 21, includes the components including the compression coil spring 6 and the opening and closing member 5, and has a configuration in which it is difficult to discharge the liquid once the liquid enters the second recess 9, and in such a configuration, the vent hole H1 effectively acts to improve the corrosion resistance.

[0088] In addition, in the slider 1 according to the first embodiment, since the plating film is formed on the surface of the slider body 2, the surface of the vent hole H1 over the entire length in the vent direction, and on the surface of the compression coil spring 6 which is the second component over the entire length in the vent direction, the corrosion resistance of the slider body is improved. Further, since the plating film is formed in the wet plating step after the attachment step, an entire air-contact area surface of the slider 1 to which the opening and closing member 5 and the compression coil spring 6 are attached is covered with the plating film.

[0089] In addition, in the method for manufacturing the slider 1 according to the first embodiment, since the non-penetrating hole portion 72 is formed in the slider body 2 in the die casting step, it is easy to form the vent hole H1 in the hole forming step, for example, as compared with a case where the non-penetrating hole portion is not formed in the die casting step.

[0090] As shown in FIG. 9, a slider 1a according to a second embodiment of the present invention is the same as the slider 1 according to the first embodiment in basic configurations of a slider body 2a and the pull 4, but is different in a configuration of a pull holder 3a and a plurality of components attached to the slider body 2a. The slider 1a according to the second embodiment is different from the slider 1 according to the first embodiment in configurations of a recess 7a and a vent hole H2. More details are as follows.

[0091] The slider 1 according to the second embodiment is configured to fix (lock) a position with respect to the pair of element rows when the pull 4 is not operated. Further, the slider 1a according to the second embodiment includes a column portion 11 which protrudes from a front portion of an upper surface of the slider body 2a; a lock member 13 which is swingably supported by the column portion 11 and a part of which can be moved up and down in the element passage 26 inside the slider body 2a; a cover member 15 which is fixed to the column portion 11 while covering the column portion 11 and the lock member 13 from an upper side; an opening and closing member 5a which opens and closes the gap G formed between a tip portion of the cover member 15 and the upper surface of the slider body 2a; a first compression coil spring 6a which is elastically deformed by the opening and closing member 5a and which is accommodated in the slider body 2a; a second compression coil spring 6b which is disposed in the slider body 2a and which is elastically deformed by the lock member 13; and the pull 4 which is attached to the cover member 15.

[0092] The components attached to the slider body 2a include the lock member 13, the opening and closing member 5a, the cover member 15, the first compression coil spring 6a, and the second compression coil spring 6b. The lock member 13 and the cover member 15 are attached to the slider body 2a via the column portion 11. The column portion 11 protrudes from the upper surface of the slider body 2a, and the slider body 2a and the column portion 11 are integrally formed. As to be described later, in the second embodiment, the lock member 13 is a first component, and the second compression coil spring 6b is a second component.

[0093] The opening and closing member 5a has the same basic configuration as the opening and closing member 5 according to the first embodiment, and is somewhat different in shape. The opening and closing member 5 moves forward in response to an attachment operation of the pull 4, which is one of operations on the pull 4, and elastically deforms (contracts) the first compression coil spring 6a.

[0094] The lock member 13 swings in a manner of being displaced upward in response to an operation of pulling the pull 4, which is another operation on the pull 4, to move the slider body 2a forward or rearward, and elastically deforms (contracts) the second compression coil spring 6b. The lock member 13 includes a base portion 36 in which a shaft insertion hole 35 through which a shaft S1 passes is formed and around which the lock member 13 is swingably supported in a state of being attached to the column portion 11; and an upper piece portion 37 and a lower piece portion 38 which extend rearward from the base portion 36 so as to face each other in the upper-lower direction.

[0095] An attachment groove 11S extending in the front-rear direction is formed in the upper surface of the column portion 11 in order to insert the base portion 36. A through hole (not shown) into which the shaft S1 is inserted is formed in the column portion 11 in a state of passing through the attachment groove 11S to the left and right.

[0096] Between the upper piece portion 37 and the lower piece portion 38, an operation recess 39 is formed which is recessed in a state of being opened rearward and which operates the lock member 13 by the connecting ring 42 of the pull.

[0097] A claw portion N extending downward is formed at a tip end portion of the lower piece portion 38. The claw portion N enters the element passage 26 through a claw hole 85 formed in the upper surface of the upper blade 21, is moved up and down accompanying swinging of the lock member 13, and thus being separated from the element row when ascending and comes into contact with the element row when descending so as to fix a position of the slider 1a with respect to the element row.

[0098] The cover member 15 is a component separated from the upper blade 21, and has a hollow shape which extends in the front-rear direction and which is opened downward with left, right, front, and rear surfaces thereof covered. A front portion of the cover member 15 is fixed in a state of covering the front, the left, and the right of the column portion 11, and the gap G for attaching the pull is formed between a rear portion of the cover member 15 and the upper surface of the upper blade 21. The cover member 15 extends upward from the upper blade 21 with the column portion 11 interposed therebetween, and a tip end portion of the cover member 15 faces the upper surface of the upper blade 21. Further, the cover member 15 and the column portion 11 cooperate to form the pull holder 3a.

[0099] The upper blade 21 includes a pair of holding portions (not shown) having the same configuration, and the recess 7a and the vent hole H2 each of which has a different configuration, as compared with the first embodiment. More specifically, the recess 7a according to the second embodiment includes a first recess 8a and a second recess 9a each of which has a different configuration, as compared with the first embodiment.

[0100] The first recess 8a includes the guide groove portion 81, the insertion groove portion 82, and the claw hole 85. The opening and closing member 5a is guided movably forward and rearward in a state where left and right end portions of the opening and closing member 5a are fitted to the left and right of the guide groove portion 81. When being at a rear limit position, the opening and closing member 5a is held by the pair of holding portions and is disposed to be movable forward, as in the case of the first embodiment.

[0101] The insertion groove portion 82 is formed on either of left and right sides of a bottom surface (lower surface) of the guide groove portion 81. A rear portion in an entire length of the insertion groove portion 82 is opened upward, and a front end portion in the entire length is covered from an upper side. The first compression coil spring 6a is accommodated in the insertion groove portion 82, and the first compression coil spring 6a is held by the opening and closing member 5a from rear. Accordingly, a front end portion of the first compression coil spring 6a is accommodated in a front end portion which is a deep bottom portion of the insertion groove portion 82, and the first compression coil spring 6a is not detached from the insertion groove portion 82.

[0102] The claw hole 85 penetrates the guide groove portion 81 in the upper-lower direction at a left-right intermediate portion thereof. Further, a lower piece groove 86 which accommodates the lower piece portion 38 is formed in the upper surface of the upper blade 21 in front of an upper portion of the claw hole 85 in a state where the lower piece groove 86 is in communication with the claw hole 85 and the attachment groove 11S of the column portion 11. The claw portion N of the lock member 13 is disposed in the claw hole 85, is not dedicated for ventilation, and thus not being the vent hole of the present invention. The lower piece groove 86 is also a part of the first recess 8a.

[0103] In the upper surface of the upper blade 21 in front of the lower piece groove 86, an accommodation hole 21h which accommodates the second compression coil spring 6b is formed to be recessed downward. The accommodation hole 21h is in communication with the lower piece groove 86 and the attachment groove 11S. The base portion 36 of the lock member 13 is accommodated in the attachment groove 11S located above the accommodation hole 21h, and the upper piece portion 37 and the lower piece portion 38 of the lock member 13 are disposed below the cover member 15 covering an upper side of the attachment groove 11S. An upper portion of the accommodation hole 21h increases in diameter as going upward. The upper blade 21 includes a wall portion 83a in front of the upper portion of the accommodation hole 21h.

[0104] A vent hole H2 is formed in the wall portion 83a. More specifically, a dedicated vent hole H2 which allows ventilation between an inside of the accommodation hole 21 h and an outside of the slider body 2a is formed in a rear surface of the wall portion 83a. The rear surface of the wall portion 83a is a boundary surface B2. The second recess 9a has the boundary surface B2 at a boundary with respect to the vent hole H2. Therefore, in the second embodiment, the accommodation hole 21h accommodating the second compression coil spring 6b is the second recess 9a, and the insertion groove portion 82 accommodating the first compression coil spring 6a is not the second recess 9a. A portion of the recess 7a other than the second recess 9a is the first recess 8a. Further, what is accommodated in the second recess 9a, that is, the second compression coil spring 6b, is an elastic body serving as the second component. Further, what holds the second compression coil spring 6b in the second recess 9a is the first component, and is the lock member 13 in the second embodiment. The lock member 13 is a deformation member which elastically deforms the elastic body (the second compression coil spring 6b) in response to an operation on the pull 4. The lock member 13 which is the first component is disposed in the first recess 8a. The first recess 8a is in communication with an inside of the second recess 9a on an opposite side of the vent hole H2.

[0105] The vent hole H2 is formed in the upper blade 21. The vent hole H2 penetrates in the front-rear direction. In addition, in the vent hole H2, a boundary between a vent hole outer portion (reference numeral omitted) on an outer portion side of the slider body 2a and a vent hole inner portion (reference numeral omitted) on a recess 7a side cannot be clearly distinguished, but a diameter is narrowed at a constant ratio from an outer opening end to an inner opening end of both ends of the vent hole H2. The vent hole H2 is formed by only the hole forming step.

[0106] The slider 1a according to the second embodiment is different from the slider 1 according to the first embodiment in that the second recess 9a is opened at an upper side thereof and a shape of the vent hole H2 is different, but in other respects, the same effects as the slider 1 according to the first embodiment are exhibited.

[0107] As shown in FIG. 10, a slider 1b according to a third embodiment of the present invention is the same as the slider 1 according to the first embodiment in basic configurations of a slider body 2b and the pull (not shown), but is different in a configuration of a pull holder 3b and a plurality of components attached to the slider body 2b. The slider 1b according to the third embodiment is different from the slider 1 according to the first embodiment in configurations of a recess 7b and a vent hole H3. More details are as follows.

[0108] The slider 1b according to the third embodiment is configured to fix (lock) a position with respect to the pair of element rows when the pull is not operated, like the slider 1a according to the second embodiment. On the other hand, in the slider 1b according to the third embodiment, unlike the slider 1a according to the second embodiment, a cover member 16 functions as a simple cover (covers a column portion (not shown) to be described later and a lock member 14 from an upper side), and does not function as a pull holder, and the lock member 14 also functions as the pull holder 3b.

[0109] Further, the slider 1b according to the third embodiment includes the slider body 2b; a column portion which protrudes from a front portion of an upper surface of the slider body 2b; the lock member 14 which is swingably supported by the column portion while supporting a pull and a part of which can be moved up and down in the element passage 26; the cover member 16 which is fixed to the column portion while covering the column portion and the lock member 14 from an upper side and between a tip end portion of which and the upper surface of the slider body 2b, the gap G through which the connecting ring 42 of the pull is inserted is formed; and a compression coil spring 6e which is accommodated in a second recess 9b in a front portion of the slider body 2b, and which pushes the lock member 14 in one direction (a direction in which the pull is held).

[0110] The component attached to the slider body 2b includes the lock member 14, the cover member 16, and the compression coil spring 6e. The lock member 14 and the cover member 16 are attached to the slider body 2b via the column portion. The column portion protrudes from the slider body 2b, and the slider body 2b and the column portion are integrally formed. As to be described later, in the third embodiment, the lock member 14 is a first component, and the compression coil spring 6e is a second component.

[0111] The lock member 14 includes a base portion 36c around which the lock member 14 is swingably supported in a state of being attached to the column portion; a holding piece portion 33c which extends downward from a front end of the base portion 36c and which holds the compression coil spring 6e; and an upper piece portion 37c and a lower piece portion 38c which extend rearward from the base portion 36c so as to face each other in the upper-lower direction. The upper piece portion 37c has a hook shape which is opened downward. More specifically, the upper piece portion 37c includes a facing piece portion 37d extending from the base portion 36c and facing the lower piece portion 38c, and a rear piece portion 37e extending downward from a rear end which is a tip of the facing piece portion 37d and holding the connecting ring of the pull from rear.

[0112] A support recess 36d which is recessed in an arc shape and which is swingably supported is formed on an upper surface of the base portion 36c. On the other hand, an attachment groove (not shown) extending in the front-rear direction is formed in an upper surface of the column portion in order to insert the base portion 36c. A through hole (not shown) into which a shaft S2 is inserted is formed in the column portion in a state of passing through the attachment groove to the left and right. Further, a connecting recess 39c which is opened downward and which connects the connecting ring of the pull is formed between the upper piece portion 37c and the lower piece portion 38c. When the connecting ring is accommodated in the connecting recess 39c, the holding piece portion 33c is pushed by the compression coil spring 6e, and the rear piece portion 37e is pressed against the upper surface of the upper blade 21. In this state, the lock member 14 holds the pull and functions as the pull holder 3b. The lock member 14 serving as the pull holder faces the upper blade 21 in such a manner that the upper piece portion 37c extends upward from the front portion of the upper blade 21 and a tip end portion (rear end portion) is pushed into the upper surface of the upper blade 21.

[0113] At a tip end portion of the lower piece portion 38c, a claw portion N1 is formed to face downward. The claw portion N1 enters the element passage 26 through a claw hole 87h formed in the upper surface of the upper blade 21, is moved up and down accompanying swinging of the lock member 14, and thus being separated from the element row when ascending and comes into contact with the element row when descending so as to fix a position of the slider 1b with respect to the element row.

[0114] As the second embodiment, the cover member 16 is a component separated from the upper blade 21, and has a hollow shape which extends in the front-rear direction and which is opened downward with left, right, front, and rear surfaces thereof covered. Further, a front portion of the cover member 16 is provided with a support protrusion portion 16a which is inserted into the attachment groove of the column portion and which presses the support recess 36d from an upper side. A shaft insertion hole 16b through which the shaft S2 passes is formed in the support protrusion portion 16a.

[0115] The upper blade 21 does not include the pair of holding portions 28, and includes the recess 7b and the vent hole H3 each of which has a different configuration, as compared with the first embodiment. More specifically, the recess 7b according to the third embodiment includes the first recess 8b and the second recess 9b each of which has a different configuration, as compared with the first embodiment.

[0116] The first recess 8b does not include the guide groove portion 81 in the first embodiment. The first recess 8b includes an accommodation groove portion 87 which is formed in a left-right intermediate portion on the upper surface of the upper blade 21 and which swingably accommodates the lock member 14. The accommodation groove portion 87 includes an accommodation groove main body portion 87a which is formed in a straight line in the front-rear direction in order to hold the base portion 36c, the lower piece portion 38c, and a tip portion (tip portion of the rear piece portion 37e) of the upper piece portion 37c of the lock member 14; and an accommodation hole portion 87b which is recessed downward from a front end portion of the accommodation groove main body portion 87a in order to accommodate the holding piece portion 33c of the lock member 14.

[0117] An intermediate portion of the accommodation groove main body portion 87a in the front-rear direction penetrates in the upper-lower direction, and the penetration portion is the claw hole 87h. The claw portion N1 of the lock member 14 is disposed in the claw hole 87h, and the claw hole 87h is not dedicated for ventilation and is not the vent hole H3 of the present invention.

[0118] In a front surface of the connecting column 23 of the slider body 2b, an insertion hole 88 which is in communication with the accommodation hole portion 87b and into which the compression coil spring 6e is inserted is formed to be recessed rearward. The insertion hole 88 has a shape in which a diameter thereof is narrowed as going rearward. The connecting column 23 includes a wall portion 83b behind a rear portion of the insertion groove hole 88.

[0119] The wall portion 83b is formed in a state where the diameter of the insertion hole 88 is narrowed. The dedicated vent hole H3 which allows ventilation between an inside of the insertion hole 88 and an outside of the slider body 2b is formed in a center of the wall portion 83b. Therefore, a front surface of the wall portion 83b is a boundary surface B3 with respect to the vent hole H3, and a rear portion of the insertion hole 88 has the boundary surface B3, so that the rear portion of the insertion hole 88 is the second recess 9b in the third embodiment. Further, what is accommodated in the second recess 9b, that is, the compression coil spring 6e, is the second component. Further, what holds the compression coil spring 6e in the second recess 9b is the first component, and is the lock member 14 in the third embodiment. The lock member 14 is a deformation member which elastically deforms the elastic body (compression coil spring 6e) in response to an operation on the pull 4. Further, what accommodates the lock member 14 which is the first component is the first recess 8b.

[0120] The vent hole H3 is formed in the connecting column 23. The vent hole H3 is a through hole extending in the front-rear direction. In addition, in the vent hole H3, a boundary between a vent hole outer portion (reference numeral omitted) on an outer portion side of the slider body 2a and a vent hole inner portion (reference numeral omitted) on a recess 7a side cannot be clearly distinguished, but a diameter is narrowed at a constant ratio from an outer opening end (on a stringer passage 25 side) to an inner opening end of both ends of the vent hole H3.

[0121] A method for manufacturing the slider 1b according to the third embodiment includes a die casting step, a hole forming step, an attachment step, and a wet plating step in this order, as in the method for manufacturing the slider 1 according to the first embodiment. In the hole forming step, the punch P for hole forming is moved back and forth, with respect to the wall portion 83 which forms the bottom of the non-penetrating hole portion 72 and which is outside the slider body 1, from an opposite side of the internal space of the non-penetrating hole portion 72 (in the third embodiment, a rear surface side of the connecting column 23) toward the non-penetrating hole portion 72, and thus the non-penetrating hole portion 72 is penetrated and the vent hole H3 is formed.

[0122] The slider 1b according to the third embodiment is different from the slider 1 according to the first embodiment in that the second recess 9b is formed in the connecting column 23 and a shape of the vent hole H3 is different, but in other respects, the same effects as the slider 1 according to the first embodiment are exhibited.

[0123] The present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the gist of the present invention. For example, in the above embodiments, the vent hole is formed in the upper blade or the connecting column, but the present invention is not limited thereto, and the vent hole may be formed in another part of the slider body, for example, the lower blade.

REFERENCE SIGNS LIST

[0124] 1, 1a, 1b: slider [0125] 2, 2a, 2b: slider body 21: upper blade 22: lower blade 23: connecting column 24: flange 25: stringer passage 26: element passage 27: tape groove 28: holding portion 3, 3a, 3b: pull holder [0126] 4: pull [0127] 41: pull main body portion [0128] 42: connecting ring [0129] 5: opening and closing member (deformation member, first component) [0130] 5a: opening and closing member [0131] 51: movable body portion [0132] 52: shutter portion [0133] 53: guide piece portion [0134] 6: compression coil spring (elastic body, second component) [0135] 6a: first compression coil spring [0136] 6b: second compression coil spring [0137] 6e: compression coil spring [0138] 7, 7a, 7b: recess [0139] 71: recess main body [0140] 72: non-penetrating hole portion [0141] 8, 8a, 8b: first recess [0142] 81: guide groove portion [0143] 81a: opening portion [0144] 81b: guide groove main body portion [0145] 81c: guide groove hole portion [0146] 82: insertion groove portion [0147] 83, 83a, 83b: wall portion [0148] 9, 9a, 9b: second recess [0149] 11, 12: column portion [0150] 13, 14: lock member (deformation member, first component) [0151] 33c: holding piece portion [0152] 35: shaft insertion hole [0153] 16b: shaft insertion hole [0154] 36, 36a, 36c: base portion [0155] 37, 37a, 37c: upper piece portion [0156] 37d: facing piece portion [0157] 37e: rear piece portion [0158] 38, 38a, 38c: lower piece portion [0159] 38d: facing piece portion [0160] 38e: rear piece portion [0161] N, N1: claw portion [0162] 39: operation recess [0163] 39c: connecting recess [0164] 15, 16: cover member [0165] 16a: support protrusion portion [0166] B1, B2, B3: boundary surface [0167] G: gap [0168] H1, H2, H3: vent hole [0169] H1a: vent hole outer portion [0170] H1b: vent hole inner portion [0171] S1, S2: shaft