CN118871007A - Zipper slider, and method for manufacturing zipper slider - Google Patents

Abstract

The corrosion resistance of the interior of a metal zipper slider is improved, and the appearance quality is maintained for a long time. The zipper slider is provided with a slider body (2) and parts accommodated in the slider body. The slider body (2) is a metal slider body (1), and a chain link passage (25) is formed on the inner side thereof for passing the opposite side edges of a pair of zipper chain links. The slider body has: a recess (7) which is recessed in the surface of the slider body and is used to accommodate the parts; and a dedicated vent (H1) which is used to ventilate the outside of the slider body and the outside of the slider body including the chain link passage and the inside of the recess. The slider has a vent, so that even if liquid enters the recess, it is easy to discharge the liquid, compared with a slider without a vent, so that the corrosion resistance can be improved and the appearance quality is maintained for a long time.

Description

Slider for slide fastener and method for manufacturing slider for slide fastener

Technical Field

The present invention relates to a slider for a slide fastener including a metallic slider body and a method for manufacturing the slider for a slide fastener.

Background

The metallic slider body may corrode due to its environment of use. If corroded, the appearance is impaired, and therefore, it is desired to improve the corrosion resistance.

As an example of a metallic slider, there is a metallic slider in which a slider is detachable from a slider body (patent document 1). More specifically, the slider body of the metal slider of patent document 1 includes: a slider body including an upper wing plate, a lower wing plate, and a connecting column connecting the upper wing plate and the lower wing plate at a front side; a tab holding body protruding from a front portion of the upper wing plate for holding the tab and extending toward a rear portion of an upper surface of the upper wing plate; a compression coil spring as a component housed in the upper blade; and a closing member that is guided so as to be movable back and forth with respect to the upper wing plate in order to open and close a gap formed between the distal end of the tab holding body and the upper wing plate. The closure member moves upon installation of the pull tab. When the pull tab is attached, the attachment portion of the pull tab is brought into contact with the closing member to press the closing member, whereby the closing member is pressed forward. In this forward position, the compression coil spring is elastically deformed as compared with the rearward position, and the closing member returns to the rearward position due to the restoring force of the compression coil spring after the pull tab is attached. In this way, the slider body is configured to close the gap for attaching the tab at the rear position.

A sliding groove is formed on the upper surface of the upper wing plate in a mode of extending forward from the rear end of the upper wing plate. The sliding groove opens above the upper wing plate, and guides the closing member to be movable forward and backward. In addition, a hole which is not penetrated and is sealed up, down, left and right and front is formed in front of the sliding groove, and a compression coil spring is accommodated.

Prior art literature

Patent literature

Patent document 1: japanese patent publication No. 3-8761

Disclosure of Invention

However, metal products sometimes corrode due to their nature. In the case of surface irregularities, corrosion is liable to occur as compared with the case of surface smoothness of a metal product. In particular, in the case of the metal slider disclosed in patent document 1, when the corrosion-inducing liquid enters the non-penetrated hole, that is, the inside of the metal slider, it is difficult to discharge the liquid, and it can be said that the inside of the metal slider is in a state of being easily corroded. Incidentally, if the inside of the metallic slider corrodes, the liquid leaks from the inside, and the like, the corrosion tends to spread to the outside of the slider, and the appearance quality is impaired.

Therefore, in order to improve corrosion resistance, it is desired to perform a plating treatment on a metallic slider. As an example of the plating process, a wet plating process is performed. However, since the hole does not penetrate, the plating solution is difficult to enter as it goes to the deep of the hole, and the plating film at the deep of the hole is thinner than the plating film at the entrance of the hole. That is, even if the plating treatment is performed, the state in which the inside of the slider body is easily corroded is not fundamentally solved.

The present invention has been made in consideration of the above-described circumstances, and an object of the present invention is to improve corrosion resistance of the inside of a metallic slider and to maintain a state of good appearance quality for a long period of time.

The slider for a slide fastener of the present invention comprises a slider body and components accommodated in the slider body, wherein the slider body is a metallic slider body including an upper wing plate, a lower wing plate, and a connecting post connecting the upper wing plate and the lower wing plate at a front side, and a fastener tape passage through which opposite side edge portions of a pair of fastener tapes pass is formed inside the slider body. The slider body includes a recess recessed in a surface of the slider body for accommodating the component, and a dedicated vent hole for venting the outside of the slider body including the fastener tape passage to the inside of the recess.

The concave portion may be formed on any surface as long as it is a surface of the upper blade. An example of limiting the portion where the recess is formed to a specific portion of the slider body is as follows.

That is, the concave portion is formed at least in the upper blade and the connecting column.

The vent holes may be formed arbitrarily. In addition, the upper surface of the slider is as follows: the tab is more easily visible than the other faces due to the manipulation of the tab, which most affects the appearance. Therefore, in order to hardly affect the appearance, it is desirable to do so as follows.

That is, the vent holes penetrate in the front-rear direction.

In order to make it difficult for the corrosion-inducing liquid to enter the recess from the outside of the slider body through the vent hole, it is desirable as follows.

That is, the aperture of the outer portion of the vent hole located on the outer side of the slider body is narrowed from the outer opening end toward the inner opening end of the both ends of the vent hole.

The inner side portion of the vent hole located on the recess side may have any shape, and for example, the aperture of the vent hole may be narrowed from the outer side portion of the vent hole toward the recess as in the outer side portion of the vent hole, and in this case, the aperture of the vent hole may be narrowed from the outer opening end toward the inner opening end over the entire length of the vent hole in the vent direction. In this case, when the liquid enters the concave portion once, the diameter of the inner opening end is small, so that it is difficult to discharge the liquid from the vent hole. Therefore, in order to make it difficult for the corrosion-inducing liquid to enter the recess from the outside of the slider body through the vent hole and to easily drain the liquid in the recess from the vent hole, it is desirable that the aperture of the inner opening end of the vent hole be wide.

That is, the aperture of the vent hole outer portion is narrowed from the outer opening end to the inner opening end (vent hole inner portion) of the both ends of the vent hole, and the aperture of the vent hole inner portion is narrowed from the inner opening end to the outer opening end (vent hole outer portion) of the both ends of the vent hole.

The recess may have any shape, and the number of components may be plural. However, the more complicated the shape of the recess, the more difficult it is to drain the liquid once it enters the part of the recess where the component is housed. In this case, the vent hole effectively contributes to improvement of corrosion resistance. As an example thereof, there is the following.

Namely, the concave portion includes: a1 st concave part formed on the upper surface of the upper wing plate; and a hole-shaped 2 nd recess which communicates with the inside of the 1 st recess and the inside of the vent hole, and has a boundary surface at a boundary between the 2 nd recess and the vent hole, wherein the component comprises: a2 nd component accommodated in the 2 nd recess; and a1 st component which is disposed in the 1 st recess and holds the 2 nd component in the 2 nd recess.

As a more specific structure of the slider, there is the following structure.

That is, the slider includes a slider body and a component, and further includes a tab holder that extends upward from the upper blade to hold the tab, and has a distal end portion facing the upper surface of the upper blade. The component is provided with: an elastomer as the 2 nd component; and a deforming member as the 1 st member that elastically deforms the elastic body by an operation performed on the pull tab.

As a structure for more embodying the structure of the slider, there is the following structure.

That is, the 2 nd recess is formed in the front portion of the slider body. The deformation member is an opening/closing member attached to the 1 st recess so as to open and close a gap formed between the distal end of the tab holding body and the upper blade, and is guided so as to be movable forward. The opening and closing member opens the gap and elastically deforms the elastic body at the front limit position, and closes the gap and is held by the upper blade at the rear limit position.

The slider may be provided with or without a plating film, but in order to improve the corrosion resistance of the slider body, the following is desirable.

That is, the plating film is formed on the surface of the slider body over the entire length of the surface of the vent hole in the vent direction.

The method for manufacturing a slider for a slide fastener according to the present invention includes the steps of: a die-casting step of manufacturing a slider body, which is made of metal and includes an upper blade, a lower blade, and a connecting post connecting the upper blade and the lower blade at a front side, by die-casting, wherein a fastener tape passage through which opposite side edge portions of a pair of fastener tapes pass is formed inside the slider body, and wherein the slider body includes a recess that is recessed in a surface of the slider body and that accommodates a component; and a hole forming step of forming a dedicated vent hole for venting the outside of the slider body including the fastener tape passage and the inside of the recess by forming a hole in a part of the portion forming the recess.

The recess of the slider body manufactured in the die casting process may have any structure, but in order to facilitate formation of the vent hole in the hole forming process, the following is desirable.

That is, the recess of the slider body manufactured in the die-casting step includes: a concave body in a constant state at a completion time point of the die casting process and a completion time point of the opening process; and a non-through hole portion which is recessed in a non-through state with respect to the recess body at a completion time point of the hole forming process, and which is formed as a part of the vent hole by penetrating the non-through hole portion in the hole forming process.

The shape of the inner portion of the vent hole located on the concave portion side may be any shape, but in order to easily form the non-penetrating hole portion in the die casting process, the following is desirable.

That is, the vent hole inner portion located on the concave portion side of the vent hole corresponds to the non-through hole portion at the completion time point of the die casting process, and the aperture of the vent hole inner portion is narrowed from the inner opening end toward the outer opening end of the both ends of the vent hole.

The hole forming step may be performed regardless of the method of forming the hole, and may be performed regardless of the shape of the outer portion of the vent hole located on the outer side of the slider body, but in order to facilitate penetration of the non-penetrated hole portion, the following is desirable.

That is, the hole forming step is a press working using a punch having a tapered end portion, and the diameter of the outer portion of the vent hole located on the outer side of the slider body is narrowed from the outer opening end to the inner opening end of the both ends of the vent hole.

In order to improve the corrosion resistance of the slider body, the following is desirable.

That is, the method for manufacturing the slider includes a wet plating step of wet plating the slider body after the hole forming step.

Effects of the invention

The slider for slide fastener and the slider manufactured by the method of manufacturing the slider according to the present invention are provided with a dedicated vent hole for venting the inside of the recess and the outside of the slider body, in addition to the recess formed in the surface of the slider body, and therefore, even if a corrosion-inducing liquid enters the recess, the liquid is easily discharged, and the corrosion resistance can be improved, and a state of good appearance quality can be continued for a long period of time, as compared with, for example, a slider without a vent hole.

Drawings

Fig. 1 is a cross-sectional view showing a portion other than a tab in a slider according to a first embodiment of the present invention, and is a cross-sectional view taken along line I-I of fig. 2.

Fig. 2 is a view showing a state in which a portion other than the tab of the slider according to the first embodiment is seen from the front.

Fig. 3 is an exploded perspective view showing a slider according to the first embodiment.

Fig. 4 is a perspective view showing a state in which a portion other than the tab is attached to the slider according to the first embodiment.

Fig. 5 is a side view showing a slider according to the first embodiment.

Fig. 6 is a rear view of the slider body of the slider according to the first embodiment.

Fig. 7 is a cross-sectional view showing a state immediately before the slider body is perforated in the method of manufacturing the slider according to the first embodiment.

Fig. 8 is a cross section showing a state in which a hole is formed in a slider body in the method of manufacturing a slider according to the first embodiment.

Fig. 9 is a cross-sectional view schematically showing a slider according to a second embodiment.

Fig. 10 is a cross-sectional view schematically showing a slider according to a third embodiment.

Detailed Description

Although not shown, as a basic structure, the slide fastener includes: 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 opposite side edge portions of the pair of fastener stringers. The fastener stringer is provided with a tape extending in a straight line and fastener element rows fixed to opposite side edge portions of the tape. The element rows of one fastener stringer are engaged with or separated from the element rows of the other fastener stringer in accordance with the direction in which the slider moves. More specifically, the slider is moved in one of the directions in which the slide fastener extends, the pair of fastener element rows are engaged with each other according to the movement amount, and the pair of fastener element chains are closed, and the slider is moved in the other of the directions in which the slide fastener extends, and the pair of fastener element rows are separated according to the movement amount, so that the pair of fastener element chains are closed.

After that, the direction is determined as follows.

The 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 in fig. 2 is a direction perpendicular to the paper surface. Fig. 2 is a drawing of the slider 1 viewed from the front.

The 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 right-left direction is the right-left direction in fig. 2. The left direction refers to the right direction in fig. 2, and the right direction refers to the left direction in fig. 2.

The vertical direction is a direction orthogonal to the front-rear direction and the left-right direction, and coincides with the vertical direction in fig. 2.

A slider 1 according to a first embodiment of the present invention is shown in fig. 1 to 5 alone. That is, the slider 1 shown in fig. 1 to 5 is not attached to the pair of fastener stringers. The pull tab is not shown in fig. 1,2, and 4. As shown in fig. 1 and 3, the slider 1 includes: a slider body 2 for engaging and disengaging a pair of fastener element rows when attached to a pair of fastener stringers; a tab holding body 3 extending upward from the upper surface of the slider body 2; a tab 4 attached to the tab holding body 3 from a gap G formed between the distal end portion of the tab holding body 3 and the upper surface of the slider body 2; and a plurality of parts 5, 6 attached to the slider body 2.

The components 5 and 6 include: an opening/closing member 5 which is disposed (held) in the slider body 2 so as to open/close the tab attachment gap G and is guided so as to be movable forward; and a compression coil spring 6 which is housed in the slider body 2 and is contracted (elastically deformed) by the opening/closing member 5. Although discussed later, in the first embodiment, the opening/closing member 5 is the 1 st component, and the compression coil spring 6 is the 2 nd component.

The shutter 5 is schematically configured to elastically deform the compression coil spring 6 in a state of contracting the same at the front limit position, and to open the gap G to such an extent that the pull tab 4 can be attached. The shutter 5 closes (narrows) the gap G at the rear limit position, holds the slider body 2, and holds the compression coil spring 6 in a state of being housed in the slider body 2. Details of the structure of the opening and closing member 5 are discussed later.

The slider 4 is pinched when moving the slider body 2 in a state of being attached to the slider body 2. As shown in fig. 3, the pull tab 4 includes: a flat plate-shaped tab body 41 that can be pinched by a finger; and an annular connecting ring 42 formed at an end of the tab main body 41 and connected to the tab holding body 3 through the gap G.

As shown in fig. 1 and 2, the slider body 2 includes: an upper wing plate 21 and a lower wing plate 22 which are opposed to each other with a gap therebetween in the up-down direction; a coupling column 23 extending in the up-down direction and coupling a front portion of the upper wing plate 21 and a front portion of the lower wing plate 22 to each other, the coupling column 23 being interposed between a pair of element rows; and flanges 24 protruding from left and right end portions of at least one (in the illustrated example, both) of the upper blade 21 and the lower blade 22 in a direction to narrow a distance between the upper blade 21 and the lower blade 22.

As shown in fig. 2 and 5, a fastener tape passage 25 through which opposite side edge portions of a pair of fastener stringers pass is formed inside the slider body 2. The fastener tape passage 25 includes: the element passage 26 is a fastener passage 26 penetrating in the front-rear direction between the upper blade 21 and the lower blade 22, and is formed in such a manner that the rear side is one passage and the front side is two passages of left and right, that is, the front side is branched into two branches of left and right; and left and right open grooves 27 communicating with the element passage 26 between the flanges 24 at the left and right ends of the upper blade 21 and the lower blade 22. A pair of element rows is inserted into the element passage 26, and a corresponding one of the belt grooves 27 is inserted. The slider body 2 is provided with a fastener tape passage 25 on the outside.

As shown in fig. 1 and 5, the tab holding body 3 protrudes from the front portion of the upper surface of the upper wing plate 21, extends toward the rear portion of the upper surface of the upper wing plate 21, and has a distal end portion opposed to the upper surface of the upper wing plate 21. More specifically, the tab holding body 3 has the following shape: the upper blade 21 protrudes upward from the front portion of the upper surface and the left and right intermediate portions thereof, extends rearward from the upper end portion thereof, and extends downward from the rear end portion thereof. The distal end of the tab holding body 3 is located above the position (root position) where the tab holding body 3 protrudes from the upper blade. Thus, a gap G for passing the coupling ring 42 of the tab 4 is formed between the upper surface of the upper wing plate 21 and the tip end of the tab holding body 3 in side view.

The tab holding body 3 and the slider body 2 are made of metal such as aluminum alloy or zinc alloy, and are integrally molded products manufactured by die casting.

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

As shown in fig. 1 to 3, the upper blade 21 includes: a recess 7 recessed in an upper surface of the upper blade 21 and accommodating a component arranged outside with respect to the fastener tape path 25; a vent hole H1 that vents the inside of the recess 7 and the outside of the slider body 2, and is formed in the front portion of the upper blade 21; and a pair of holding portions 28 that protrude from left and right outer sides with respect to the recess 7 in the upper surface and hold the opening and closing member 5 at positions where the gap G is closed.

As shown in fig. 1, the recess 7 includes: a1 st concave portion 8 formed on the upper surface of the upper wing plate 21; and a hole-shaped 2 nd recess 9 which communicates with the inside of the 1 st recess 8 and the inside of the vent hole H1, and has a boundary surface B1 at the boundary between the 2 nd recess 9 and the vent hole H1. The clear difference between the 1 st concave portion 8 and the 2 nd concave portion 9 is the presence or absence of the boundary surface B1. In other words, the inside of the 2 nd concave portion 9 communicates directly with the inside of the vent hole H1, and therefore, the boundary surface B1 exists in the 2 nd concave portion 9, and the inside of the 1 st concave portion 8 communicates with the inside of the vent hole H1 via the inside of the 2 nd concave portion 9, and therefore, the boundary surface B1 does not exist in the 1 st concave portion 9.

As shown in fig. 3, the 1 st concave portion 8 includes: a guide groove 81 formed in the upper surface of the upper wing plate 21 at the left and right intermediate portions of the rear portion thereof, and guiding the shutter 5 so as to be movable back and forth; and an insertion groove portion 82 recessed in a bottom surface (lower surface) of the guide groove portion 81 and for inserting the compression coil spring 6. More specifically, the 1 st concave portion 8 includes a part of the insertion groove 82 and the guide groove 81. The other portion of the insertion groove 82 is the 2 nd concave portion 9. This is discussed later. Further, the rear portion of the upper blade 21 is lowered in a stepped shape with respect to the portion forward thereof with respect to the upper surface.

The pair of holding portions 28 are formed on the left and right sides of the guide groove 81 at the portions where the level difference becomes low. The holding portion 28 is erected upward as shown in fig. 3 before the opening/closing member 5 is attached, and after the opening/closing member 5 is attached, the holding portion 28 is pressed (plastically deformed) so that the distal ends of the holding portion 28 approach left and right as shown in fig. 4, and the movement of the opening/closing member 5 rearward is prevented, and the rearward limit position of the opening/closing member 5 is determined.

In the front-rear direction, as shown in fig. 7, the guide groove 81 extends from the rear end of the upper blade 21 toward the root position through the tip of the tab holding body 3. In addition, the guide groove 81 includes, in the front-rear direction: a groove-shaped guide groove body 81b that opens above the upper wing plate 21; and a hole-shaped guide slot portion 81c extending forward from a lower portion of the guide slot main body portion 81 b. The portion of the guide groove body 81b that opens above the upper blade 21 is defined as an opening 81a

As shown in fig. 6, the guide groove body 81b is formed at the same position as the end of the tab holding body 3 with respect to the position in the left-right direction. As shown in fig. 3, the front portion of the opening 81a is narrower than the rear portion of the opening 81a with respect to the width in the lateral direction. In other words, the upper part of the front part of the guide groove body 81b is a narrow part that is narrower in the left-right direction than the rear part of the guide groove body 81b, and the lower part of the front part of the guide groove body 81b is a wide part of the same width as the rear part of the guide groove body 81 b. The left and right ends of the opening/closing member 5 are guided in a fitted state at the left and right sides of the wide portion.

The width in the lateral direction is the same in the entire height range of the rear portion of the guide groove body 81b at the stage before the pair of holding portions 28 are pressed as shown in fig. 3, but is narrower in the state where the pressing is performed as shown in fig. 4 at the height positions where the distal ends of the pair of holding portions 28 approach in the lateral direction than in the state before the pressing is performed.

The shutter 5 holds the compression coil spring 6 in the insertion groove 82. As shown in fig. 3, the opening/closing member 5 includes: a moving body 51 that moves along the guide groove 81; a shutter portion 52 protruding from a central portion in the front-rear direction in the upper surface of the moving body portion 51 and opening and closing the gap G; and a pair of guide piece portions 53 protruding laterally from the left and right side surfaces of the movable body portion 51 and the middle portion in the front-rear direction, and guided in a state fitted in the left and right sides of the guide groove portion 81. The left and right central portions of the lower surface of the movable body 51 protrude so as to fit into the insertion groove 82. In a state where the shutter 5 is attached to the slider body 2 as shown in fig. 4, a pair of holding portions 28 in a pressed state are disposed behind the pair of guide pieces 53, and the rear limit position of the shutter 5 is determined.

The insertion groove 82 extends forward and backward as shown in fig. 3, and is formed at left and right intermediate portions of the lower surface of the guide groove body 81 b. As shown in fig. 7, the insertion groove 82 extends forward from the guide groove 81c of the guide groove 81. However, the tip of the insertion groove 82 is located rearward of the front surface of the upper blade 21 of the slider body 2. The rear portion of the insertion groove 82 is formed in a groove shape that opens upward and rearward, and is a portion on which the 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, the front portion of the insertion groove 82 is in a hole shape, and is a portion that accommodates the compression coil spring 6 in a state in which the outer peripheral surface of the compression coil spring 6 is positioned from the front, rear, left, and right. The upper blade 21 is provided with a wall 83 in front of the front portion of the insertion groove 82.

As shown in fig. 1, the wall 83 is formed so as to narrow the diameter of the insertion groove 82. A dedicated vent hole H1 for venting the inside of the hole, which is the front portion of the insertion groove 82, and the outside of the slider body 2 is formed in the center of the wall 83. Accordingly, the rear surface of the wall portion 83 is a boundary surface B1 with the vent hole H1, and the front portion of the insertion groove portion 82 has the boundary surface B1, and therefore, the insertion groove portion 82 is the 2 nd concave portion 9 in the first embodiment. In addition, the portion of the recess 7 other than the 2 nd recess 9, more specifically, the rear portion of the insertion groove 82 and the guide groove 81 are the 1 st recess 8 in the first embodiment. The component housed in the 2 nd recess 9 is the 2 nd component, and in the first embodiment is the compression coil spring 6 as an elastic body. The component disposed in the 1 st recess 8 is the 1 st component, and in the first embodiment, is the opening/closing member 5 as a deforming member that elastically deforms the elastic body 6 by the operation of the pull tab 4. The operation performed on the pull tab 4 refers to the operation of attaching the pull tab 4 in the first embodiment. In this operation, the opening/closing member 5 moves forward to widen the tab attaching gap G, and the connecting ring 42 of the tab 4 is connected through the tab holding body 3. The compression coil spring 6 and the shutter 5 are disposed outside the fastener tape passage 25.

The vent H1 is formed directly below the upper surface of the upper wing plate 21. The vent H1 is a hole penetrating in the front-rear direction as the depth direction thereof. The inside space of the vent hole H1 is filled with air, and no component is disposed. The vent H1 is vent-specific. As shown in fig. 2 and 6, the vent hole H1 is a circular hole when viewed in the depth direction, and the front portion of the insertion groove 82 serving as the 2 nd concave portion 9 is a hole having a larger shape than the vent hole H1, specifically, a rectangular hole. That is, the vent hole H1 and the 2 nd recess 9 are different in shape.

As shown in fig. 1, the vent hole H1 has a different shape in its entire length from the vent hole outer portion H1a located on the outer side of the slider body 2 and the vent hole inner portion H1b located on the recess 7 side. More specifically, the vent hole outer portion H1a is narrowed in diameter from the outer opening end toward the inner opening end (toward the vent hole inner portion H1 b) of the both ends of the vent hole H1. The vent inner portion H1b narrows in diameter from the inner opening end toward the outer opening end (toward the vent outer portion H1 a) of the both ends of the vent H1. The vent hole inner portion H1b, which is a non-penetration hole portion that is blocked by the vent hole outer portion H1a at the time point when the die casting is completed, will be discussed in detail later.

The vent hole H1 is formed in a straight line, and the inclination angle θ1 of the vent hole outer portion H1a with respect to the depth direction of the vent hole H1 is larger than the inclination angle θ2 of the vent hole inner portion H1b with respect to the depth direction. As an example, the inclination angle θ1 of the vent hole outer portion H1a is an acute angle, and is an angle inclined by, for example, 10 degrees to 40 degrees with respect to the front-rear direction. More preferably, the inclination angle θ1 is 20 degrees.

A plating film (not shown) is formed on the slider 1. The plating film is formed on the surface of the slider 1 that is in contact with air in a state where the compression coil spring 6 and the opening/closing member 5 are attached to the slider body 2, in a portion other than the tab 4. The insertion groove 82 in which the compression coil spring 6 is accommodated is opened from the clearance between the opening and closing member 5 and the upper surface of the upper blade 21 to the outside of the slider body 2 at the rear thereof, and is opened from the vent hole H1 to the outside of the slider body 2 at the front thereof. The plating film is formed on the slider 1 by wet plating. Specifically, the plating film is formed at least over the entire length in the ventilation direction of the surface of the slider body 2, the surface of the tab holding body 3, the surface of the opening and closing member 5, the surface (inner surface) of the recess 7, the surface (inner surface) of the ventilation hole H1, and the entire length in the ventilation direction of the surface of the elastic body (compression coil spring 6) as the 2 nd component. Incidentally, the description will be made with respect to the upper blade 21 constituting a part of the slider body 2, and the surface of the slider body 2 is as follows. The surfaces of the upper blade 21 are the upper surface, the lower surface, the left and right side surfaces, the rear surface, and the front surface of the upper blade 21. The same applies to the surfaces of the lower blade 22 and the coupling post 23 that constitute the other portion of the slider body 2.

The method for manufacturing the slider 1 according to the first embodiment includes the steps of: a die-casting step of manufacturing a metallic slider body 2 by die-casting using a die for forming the recess 7; a hole forming step of forming a hole H1 dedicated to ventilation between the outside of the slider body 2 including the fastener tape passage 25 and the inside of the recess 7 by forming a hole in a part of the portion forming the recess 7; an installation step of installing the opening/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 on which the component is mounted after the hole forming step. The tab 4 has not yet been attached at the time point when the wet plating process is completed. The tab 4 is attached after the completion of the wet plating process and after the plating film is sufficiently dried.

As shown in fig. 7, the recess 7 of the slider body 2 manufactured in the die-casting step includes: a concave body 71 in a constant state at the completion time point of the die casting process and the completion time point of the hole forming process; and a non-through hole 72 that is recessed in a non-through state with respect to the recess body 71 at a completion time point of the hole forming process, and that thins a part (wall 83) of a portion that forms the recess body 71. The recess body 71 corresponds to the recess 7 in the slider 1 of the first embodiment. In the slider according to the first embodiment, the non-through hole 72 corresponds to the vent hole inner portion H1b, and more specifically, the vent hole inner portion H1b corresponds to a non-through state in which one of the vent hole outer portions H1a is blocked. The non-penetrating hole portion 72 has a so-called draft angle for opening the mold after the molten metal is injected into the mold, and therefore the aperture of the vent inner portion H1b is narrowed from the inner opening end of the both ends of the vent H1 toward the vent outer portion H1 a.

As shown in fig. 8, the hole forming step is performed by penetrating the non-penetrated hole 72 to form a part of the ventilation hole H1. Wherein, punching processing is used in the punching process. The punch P for opening is reciprocated toward the non-penetration hole 72 from the outside of the slider body 1 on the opposite side (the front surface side of the slider body 1 in the first embodiment) to the inner space of the non-penetration hole 72 with respect to the portion of the wall 83 where the bottom of the non-penetration hole 72 is formed, whereby the non-penetration hole 72 is penetrated to form the vent H1. In other words, the direction in which the punch P is advanced to pierce the portion of the wall portion 83 where the bottom of the non-through hole portion 72 is formed is the same direction as the direction from the bottom of the non-through hole portion 72 toward the inlet. The direction in which the punch P is returned to be pulled out from the bottom-formed portion is the same direction as the direction from the entrance of the non-penetrating hole 72 toward the bottom.

The thickness of the portion of the wall 83 where the bottom of the non-through hole 72 is formed (the shortest distance between the non-through hole 72 and the outside of the slider body 1 when measured in the depth direction of the non-through hole 72) is, for example, 0.1mm or less, and the punch P can easily penetrate the portion.

The tip of the punch P is tapered, and is inclined at an angle of 10 to 40 degrees with respect to the front-rear direction, for example. 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 H1 b. Further, since the punch P is reciprocated from the outside of the slider body 1 to the side opposite to the inner space of the non-penetration hole 72 to penetrate the non-penetration hole 72, burrs (not shown) generated in the hole forming step are pushed into the inside of the vent hole H1, and the appearance quality of the slider body 1 is not impaired. The burrs extend from the outer opening ends of the both ends of the vent H1 toward the vent inner portion H1 b.

In the mounting step, the compression coil spring 6 as an elastic body is inserted into the front portion of the insertion groove 82 as the 2 nd recess of the slider body 2, and thereafter the opening/closing member 5 as a deforming member is fitted into the guide groove 81 of the 1 st recess 8, so that the pair of holding portions 28 are pressed, whereby the opening/closing member 5 is mounted to the slider body 2.

The wet plating used in the wet plating step is as follows: the metal film (plating film) is formed on the surface of the object by flowing electricity in an aqueous solution containing an ionized metal or by a chemical reaction by a reducing agent. As typical plating of wet plating, there are electroplating and electroless plating, and in this embodiment, electroplating is used.

The product (the slider body 2 with the components mounted thereon) was placed in an aqueous solution in a treatment tank, a copper plate was placed on an anode in the treatment tank, and a product as a conductive material was placed on a cathode, and the plating was performed by applying electricity. Electrons are supplied from the negative electrode terminal to the cathode side, and copper on the anode side becomes copper ions and moves to the cathode side. Copper ions react with electrons to form copper, which is deposited on the surface of the cathode, and a metal coating film is formed on the surface of the product. Then, polishing and clear coating are performed, and the wet plating process is completed.

The slider 1 according to the first embodiment manufactured by the method for manufacturing a slider 1 according to the first embodiment described above is provided with the dedicated vent hole H1 in addition to the recess 7 formed in the surface of the slider body 2, and therefore, even if a liquid that induces corrosion enters the recess 7, the liquid is easily discharged, and thus the corrosion resistance can be improved, and a state of good appearance quality can be continued for a long period of time, as compared with, for example, a slider without the vent hole H1.

Further, since the slider 1 of the first embodiment is formed with the vent hole H1 penetrating in the front-rear direction, it is difficult to affect the external appearance, compared with a case where the vent hole is formed on the upper surface of the slider, for example.

In the slider 1 of the first embodiment, the aperture is narrowed from the outer opening end toward the inner opening end (vent inner portion H1 b) of the both ends of the vent H1 by the vent outer portion H1a, and therefore, the liquid inducing corrosion is less likely to enter from the vent H1.

Further, since the aperture of the vent inner portion H1b is narrowed from the inner opening end toward the outer opening end (the vent outer portion H1 a) of the both ends of the vent H1 in the slider 1 according to the first embodiment, it is easier to discharge the liquid once entering the 2 nd recess 9 from the vent H1 than in the case where the aperture of the vent inner portion H1b is narrowed from the vent outer portion H1a toward the inner opening end (the 2 nd recess 9) in the same manner as the vent outer portion H1 a.

The slider according to the first embodiment has the following structure: the recess 7 has a complex shape including the 1 st recess 8 and the hole-like 2 nd recess 9 formed in the upper surface of the upper blade 21, and the component part includes the compression coil spring 6 and the opening/closing member 5, and when the liquid enters the 2 nd recess 9, it is difficult to discharge the liquid, and in such a configuration, the vent hole H1 effectively contributes to improvement of corrosion resistance.

In the slider 1 of the first embodiment, the plating film is formed on the surface of the slider body 2, over the entire length of the surface of the vent hole H1 in the ventilation direction, and over the entire length of the surface of the compression coil spring 6 as the 2 nd component in the ventilation direction, so that the corrosion resistance of the slider body is improved. Further, since the plating film is formed by the wet plating process after the mounting process, the entire area of the surface of the slider 1 to which the opening/closing member 5 and the compression coil spring 6 are attached, which is in contact with air, is covered with the plating film.

In addition, since the non-through hole 72 is formed in the slider body 2 in the die-casting step in the method of manufacturing the slider 1 according to the first embodiment, the vent H1 is easily formed in the hole forming step, as compared with, for example, a case where the non-through hole is not formed in the die-casting step.

As shown in fig. 9, a slider 1a according to a second embodiment of the present invention is similar to the slider 1 according to the first embodiment in terms of the basic structure of the slider body 2a and the tab 4, but is different in terms of the structure of the tab holding body 3a and a plurality of components attached to the slider body 2 a. The slider 1a of the second embodiment is different from the slider 1 of the first embodiment in the structures of the recess 7a and the vent hole H2. In more detail, this is as follows.

The slider 1 of the second embodiment has a structure in which the positions of the pair of element rows are fixed (locked) in the non-operation state of the tab 4. The slider 1a according to the second embodiment includes: a pillar portion 11 protruding from a front portion of an upper surface of the slider body 2a; a lock member 13 that is a lock member 13 swingably supported by the column 11, and a part of which is movable up and down in a fastener passage 26 in the slider body 2a; a cover member 15 that covers the column portion 11 and the locking member 13 from above and is fixed to the column portion 11; an opening/closing member 5a for opening/closing a gap G formed between the distal end portion of the cover member 15 and the upper surface of the slider body 2a; a1 st compression coil spring 6a which is elastically deformed by the opening/closing member 5a and is accommodated in the slider body 2a; a2 nd compression coil spring 6b which is disposed on the slider body 2a and is elastically deformed by the lock member 13; and a pull tab 4 mounted to the cover member 15.

The components attached to the slider body 2a include a lock member 13, an opening/closing member 5a, a cover member 15, a1 st compression coil spring 6a, and a2 nd compression coil spring 6b. Incidentally, the lock member 13 and the cover member 15 are attached to the slider body 2a via the column portion 11. The post 11 protrudes from the upper surface of the slider body 2a, and the slider body 2a and the post 11 are integrally formed. Although discussed later, in the second embodiment, the lock member 13 is the 1 st component, and the 2 nd compression coil spring 6b is the 2 nd component.

The basic structure of the opening and closing member 5a is the same as that of the opening and closing member 5 of the first embodiment, and is slightly different in shape. The opening/closing member 5 moves forward by the attachment operation of the pull tab 4, which is one of the operations performed on the pull tab 4, and elastically deforms (contracts) the 1 st compression coil spring 6 a.

The lock member 13 swings so as to be displaced upward by an operation of pulling the tab 4, which is another operation performed on the tab 4, to move the slider body 2a in the front or rear direction, and elastically deforms (contracts) the 2 nd compression coil spring 6 b. The lock member 13 includes: a base 36 formed with a shaft insertion hole 35 through which the shaft S1 passes in a state where the lock member 13 is attached to the column portion 11, and serving as a center that is swingably supported; and an upper piece 37 and a lower piece 38 extending from the base 36 rearward in a vertically opposed manner.

A mounting groove 11S extending in the front-rear direction is formed in the upper surface of the column portion 11 for insertion of the base portion 36. The column portion 11 is formed with a through hole (not shown) through which the shaft S1 is inserted, in a state of being inserted in the left-right direction through the mounting groove 11S.

An operation recess 39 is formed between the upper piece 37 and the lower piece 38, the operation recess 39 is recessed in a state of opening rearward, and the locking member 13 is operated by the coupling ring 42 of the pull tab.

A claw portion N is formed at the distal end portion of the lower piece portion 38 in a state extending downward. The claw portion N enters the element passage 26 through the claw hole 85 formed in the upper surface of the upper blade 21, and moves up and down with the swinging of the lock member 13, and separates from the element row at the time of rising, and contacts the element row at the time of falling, thereby fixing the position of the slider 1a with respect to the element row.

The cover member 15 is a member other than the upper blade 21, extends in the front-rear direction, and has a hollow shape with left, right, front, rear surfaces covered and opened downward. The front portion of the cover member 15 is fixed to the column portion 11 so as to cover the front and left and right sides, and a gap G for attaching the tab is formed between the 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 wing plate 21 via the column portion 11, and the distal end portion thereof faces the upper surface of the upper wing plate 21. The cover member 15 cooperates with the column portion 11 to form the tab holding body 3a.

The upper blade 21 has a pair of holding portions (not shown) having the same structure, and a recess 7a and a vent H2 having different structures, as compared with the first embodiment. More specifically, the recess 7a of the second embodiment has a 1 st recess 8a and a 2 nd recess 9a having different structures from those of the first embodiment.

The 1 st recess 8a includes a guide groove 81, an insertion groove 82, and a claw hole 85. The left and right ends of the shutter 5a are guided to be movable in the front-rear direction in a state of being fitted to the left and right sides of the guide groove 81. When the opening/closing member 5a is located at the rear limit position, it is held by the pair of holding portions and is disposed so as to be movable forward, as in the case of the first embodiment.

The insertion groove 82 is formed on one side of the bottom surface (lower surface) of the guide groove 81. The rear portion of the entire length of the insertion groove 82 is opened upward, and the front end portion of the entire length is covered upward. The 1 st compression coil spring 6a is accommodated in the insertion groove 82, and the 1 st compression coil spring 6a is held by the shutter 5a from the rear. Accordingly, the distal end portion of the 1 st compression coil spring 6a is housed in the distal end portion which is the deep bottom of the insertion groove 82, and the 1 st compression coil spring 6a does not come off from the insertion groove 82.

The claw hole 85 penetrates in the up-down direction at the left and right intermediate portions of the guide groove portion 81. Further, a lower piece groove 86 that accommodates the lower piece 38 is formed on the upper surface of the upper blade 21 and in front of the upper portion of the claw hole 85 so as to communicate with the claw hole 85 and the mounting groove 11S of the column 11. The claw portion N of the lock member 13 is disposed in the claw hole 85, and the claw hole 85 is not dedicated for ventilation, and is therefore not a ventilation hole of the present invention. The lower sheet groove 86 is also a part of the 1 st concave portion 8 a.

A receiving hole 21h for receiving the 2 nd compression coil spring 6b is formed in a downward recessed manner on the upper surface of the upper blade 21 and in front of the lower blade groove 86. The receiving hole 21h communicates with the lower sheet groove 86 and the mounting groove 11S. The base 36 of the lock member 13 is accommodated in the mounting groove 11S located above the accommodation hole 21h, and the upper piece 37 and the lower piece 38 of the lock member 13 are disposed below the cover member 15 covering the mounting groove 11S. The diameter of the upper portion of the accommodation hole 21h increases as it goes upward. The upper blade 21 includes a wall 83a at the front of the upper portion of the housing hole 21h.

The wall 83a has a vent H2. More specifically, a dedicated vent hole H2 for venting the inside of the housing hole 21H and the outside of the slider body 2a is formed in the rear surface of the wall 83 a. The rear surface of the wall portion 83a is a boundary surface B2. The 2 nd concave portion 9a has a boundary surface B2 at a boundary between it and the vent hole H2. Thus, in the second embodiment, the housing hole 21h housing the 2 nd compression coil spring 6b is the 2 nd concave portion 9a, and the insertion groove 82 housing the 1 st compression coil spring 6a is not the 2 nd concave portion 9a. The portion of the recess 7a other than the 2 nd recess 9a is the 1 st recess 8a. The component housed in the 2 nd concave portion 9a, that is, the 2 nd compression coil spring 6b is an elastic body as the 2 nd component. The component that holds the 2 nd compression coil spring 6b in the 2 nd recess 9a is the 1 st component, and in the second embodiment is the lock component 13. The lock member 13 is a deformation member that elastically deforms the elastic body (the 2 nd compression coil spring 6 b) by the operation of the pull tab 4. The 1 st member 13 is disposed in the 1 st recess 8a. The 1 st concave portion 8a communicates with the inside of the 2 nd concave portion 9a on the opposite side of the vent hole H2.

The vent H2 is formed in the upper wing plate 21. The vent H2 penetrates in the front-rear direction. Further, the vent hole H2 cannot clearly distinguish the boundary between the vent hole outer portion (reference numeral omitted) located on the outer side of the slider body 2a and the vent hole inner portion (reference numeral omitted) located on the recess 7a side, but the aperture narrows at a constant rate from the outer opening end to the inner opening end of the both ends of the vent hole H2. The vent H2 is formed only by the hole forming process.

The slider 1a of the second embodiment is different from the slider 1 of the first embodiment in the shape of the vent hole H2 and the upper opening of the 2 nd recess 9a, and the same effects as those of the slider 1 of the first embodiment are exhibited in other portions.

As shown in fig. 10, a slider 1b according to a third embodiment of the present invention is similar to the slider 1 according to the first embodiment in terms of the basic structure of the slider body 2b and a tab (not shown), but is different in terms of the structure of the tab holding body 3b and a plurality of components attached to the slider body 2 b. The slider 1b of the third embodiment is different from the slider 1 of the first embodiment in the structures of the recess 7b and the vent hole H3. In more detail, this is as follows.

The slider 1b of the third embodiment has a structure for fixing (locking) the positions of the pair of element rows in the non-operation state of the tab, similarly to the slider 1a of the second embodiment. On the other hand, unlike the slider 1a of the second embodiment, the slider 1b of the third embodiment has the cover member 16 functioning only as a cover (covering a post portion (not shown) and the lock member 14, which will be described later, from above), and does not function as a tab holder, and the lock member 14 also has the function of the tab holder 3 b.

The slider 1b according to the third embodiment includes: a slider body 2b; a pillar portion protruding from a front portion of an upper surface of the slider body 2b; a lock member 14 that holds a tab and is swingably supported by the column portion, wherein a part of the lock member 14 is movable up and down in the element passage 26; a cover member 16 that covers the column portion and the lock member 14 from above and is fixed to the column portion, wherein a gap G through which the coupling ring 42 of the tab is inserted is formed between the distal end portion of the cover member 16 and the upper surface of the slider body 2b; and a compression coil spring 6e which is accommodated in the 2 nd recess 9b at the front portion of the slider body 2b and presses the lock member 14 in one direction (the direction in which the tab is held).

The components attached to the slider body 2b include a lock member 14, a cover member 16, and a compression coil spring 6e. Incidentally, the lock member 14 and the cover member 16 are attached to the slider body 2b via a post portion. The post portion protrudes from the slider body 2b, and the slider body 2b and the post portion are integrally formed. Although discussed later, in the third embodiment, the lock member 14 is the 1 st component, and the compression coil spring 6e is the 2 nd component.

The lock member 14 includes: a base 36c serving as a swingably supported center in a state where the lock member 14 is attached to the column portion; a holding piece 33c extending downward from the front end of the base 36c and holding the compression coil spring 6e; and an upper piece 37c and a lower piece 38c that extend from the base 36c to the rear so as to face each other in the vertical direction. The upper piece 37c is formed in a hook shape opened downward. More specifically, the upper piece 37c includes: an opposing piece 37d extending from the base 36c and opposing the lower piece 38 c; and a rear piece portion 37e extending downward from a rear end which is a distal end of the opposing piece portion 37d and holding a coupling ring of the pull tab from behind.

A support concave portion 36d is formed on the upper surface of the base portion 36c, and the support concave portion 36d is recessed in an arc shape and is swingably supported. On the other hand, a mounting groove (not shown) extending in the front-rear direction is formed in the upper surface of the column portion for inserting the base portion 36 c. A through hole (not shown) through which the shaft S2 is inserted is formed in the column portion so as to pass through the mounting groove in the left-right direction. A coupling recess 39c is formed between the upper piece 37c and the lower piece 38c, which is opened downward and couples the coupling ring of the pull tab. When the connecting ring is accommodated in the connecting concave portion 39c, the holding piece portion 33c is pushed in 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 tab and functions as the tab holding body 3 b. The upper piece 37c of the lock member 14 as a tab holder extends upward from the front portion of the upper wing plate 21, and the distal end portion (rear end portion) is opposed to the upper surface of the upper wing plate 21 in a pressed-in state.

Further, a claw portion N1 is formed downward at the distal end portion of the lower piece portion 38 c. The claw portion N1 enters the element passage 26 through a claw hole 87h formed in the upper surface of the upper blade 21, and moves up and down with the swinging of the lock member 14, and separates from the element row at the time of rising, and contacts the element row at the time of falling, thereby fixing the position of the slider 1b with respect to the element row.

The cover member 16 is a member other than the upper blade 21, and is a hollow member that extends in the front-rear direction, is covered on the left-right front-rear surfaces, and is opened downward, as in the second embodiment. Further, a support protrusion 16a is provided at the front portion of the cover member 16, and the support protrusion 16a is inserted into the mounting groove of the column portion and presses the support recess 36d from above. The support protrusion 16a is formed with a shaft insertion hole 16b through which the shaft S2 passes.

In comparison with the first embodiment, the upper blade 21 does not have the pair of holding portions 28, and has the recess 7b and the vent hole H3 having different structures. More specifically, the recess 7b of the third embodiment has a1 st recess 8b and a2 nd recess 9b having different structures from those of the first embodiment.

The 1 st concave portion 8b does not have the guide groove portion 81 in the first embodiment. The 1 st concave portion 8b includes a receiving groove portion 87, and the receiving groove portion 87 is formed on the upper surface of the upper blade 21 and formed in the left and right intermediate portions, and houses the lock member 14 swingably. The housing groove 87 includes: a housing groove body 87a formed in a straight line in the front-rear direction so as to hold the distal end portions of the base 36c, the lower piece 38c, and the upper piece 37c (distal end portions of the rear piece 37 e) of the lock member 14; and a receiving hole 87b recessed downward from the front end of the receiving groove body 87a for receiving the holding piece 33c of the lock member 14.

The housing groove body 87a is vertically penetrated through a middle portion in the front-rear direction thereof, and the penetrated portion is a 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 therefore not the ventilation hole H3 of the present invention.

An insertion hole 88 that communicates with the accommodation hole 87b and into which the compression coil spring 6e is inserted is formed in the front surface of the coupling post 23 of the slider body 2b so as to be recessed rearward. The insertion hole 88 has a shape with a diameter that decreases with the rearward direction. The connecting post 23 includes a wall 83b at the rear of the rear portion of the insertion slot 88.

The wall 83b is formed in a state where the diameter of the insertion hole 88 is narrowed. A dedicated vent hole H3 for venting the inside of the insertion hole 88 and the outside of the slider body 2b is formed in the center of the wall 83 b. Accordingly, the front surface of the wall portion 83B is a boundary surface B3 with the vent hole H3, and the rear portion of the insertion hole 88 has the boundary surface B3, and therefore, the rear portion of the insertion hole 88 is the 2 nd concave portion 9B in the third embodiment. The component accommodated in the 2 nd recess 9b, that is, the compression coil spring 6e is the 2 nd component. The component that holds the compression coil spring 6e in the 2 nd recess 9b is the 1 st component, and in the third embodiment is the lock component 14. The lock member 14 is a deformation member that elastically deforms an elastic body (compression coil spring 6 e) by an operation performed on the pull tab 4. The portion where the 1 st component lock member 14 is accommodated is the 1 st recess 8b.

The vent H3 is formed in the connecting column 23. The vent H3 is a through hole extending in the front-rear direction. Further, although the boundary between the vent hole outer side portion (reference numeral omitted) located on the outer side of the slider body 2a and the vent hole inner side portion (reference numeral omitted) located on the concave portion 7a side cannot be clearly distinguished by the vent hole H3, the aperture is narrowed at a constant rate from the outer open end (the fastener tape passage 25 side) to the inner open end of the both ends of the vent hole H3.

The method for manufacturing the slider 1b according to the third embodiment includes, in order, a die casting step, a hole forming step, an attaching step, and a wet plating step, as in the method for manufacturing the slider 1 according to the first embodiment. In the hole forming step, the punch P for forming a hole is reciprocated from the outside of the slider body 1 toward the non-penetration hole 72 on the opposite side (the rear surface side of the coupling post 23 in the third embodiment) to the inner space of the non-penetration hole 72 with respect to the wall 83 forming the bottom of the non-penetration hole 72, whereby the non-penetration hole 72 is penetrated to form the vent H3.

The slider 1b of the third embodiment is different from the slider 1 of the first embodiment in the shape of the vent hole H3 in that the 2 nd recess 9b is formed in the coupling post 23, and the same effects as those of the slider 1 of the first embodiment are exhibited in other portions.

The present invention is not limited to the above-described embodiments, and can be appropriately modified within a range not departing from the gist thereof. For example, the vent hole is formed in the upper blade or the coupling post in the above embodiment, but the present invention is not limited to this, and may be formed in other parts of the slider body, for example, the lower blade.

Description of the reference numerals

1.1 A, 1b: pull head

2.2 A, 2b: slider body

21: Upper wing plate

22: Lower wing plate

23: Connecting column

24: Flange

25: Dental chain belt passage

26: Fastener element passage

27: With grooves in the groove

28: Holding part

3.3 A, 3b: pull tab holder

4: Pull tab

41: Pull tab body

42: Connecting ring

5: Opening and closing parts (deformation parts, 1 st parts)

5A: opening and closing member

51: Moving body

52: Baffle plate part

53: Guide piece

6: Compression coil spring (elastomer, part 2)

6A: 1 st compression coil spring

6B: 2 nd compression coil spring

6E: compression coil spring

7. 7A, 7b: concave part

71: Concave body

72: Non-penetrating hole part

8. 8A, 8b: recess 1

81: Guide groove portion

81A: an opening part

81B: guide groove body part

81C: guide slot portion

82: Insertion groove portion

83. 83A, 83b: wall portion

9. 9A, 9b: recess 2

11. 12: Column part

13. 14: Locking parts (deformation parts, 1 st parts)

33C: retaining tab

35: Shaft penetration hole

16B: shaft penetration hole

36. 36A, 36c: base part

37. 37A, 37c: upper sheet part

37D: opposed sheet portion

37E: rear part

38. 38A, 38c: lower sheet part

38D: opposed sheet portion

38E: rear part

N, N1: claw portion

39: Working recess

39C: connection concave portion

15. 16: Cover member

16A: support convex part

B1, B2, B3: boundary surface

G: gap of

H1, H2, H3: vent hole

H1a: outer side of vent hole

H1b: inner side of vent hole

S1, S2: a shaft.

Claims (14)

1. A slider for a slide fastener is characterized in that,

The slider body (2, 2a, 2 b) is a metallic slider body (2, 2a, 2 b) comprising an upper blade (21), a lower blade (22), and a connecting post (23) connecting the upper blade (21) and the lower blade (22) at the front side, a fastener tape passage (25) for passing through opposite side edge portions of a pair of fastener tapes is formed inside the slider body (2, 2a, 2 b),

The slider body (2, 2a, 2 b) is provided with a recess (7, 7a, 7 b), the recess (7, 7a, 7 b) is recessed in the surface of the slider body (2, 2a, 2 b) and is used for accommodating the components (5, 6, 14, 15, 6a, 6b, 6 e), the slider body (2, 2a, 2 b) is provided with a special vent hole (H1, H2, H3), and the vent hole (H1, H2, H3) enables the outside of the slider body (1, 1a, 1 b) to be ventilated with the inside of the recess (7, 7a, 7 b) including the fastener tape passage (25).

2. The slider for slide fastener according to claim 1, wherein,

The recessed portions (7, 7a, 7 b) are formed in at least the upper wing plate (21) in the upper wing plate (21) and the connecting column (23).

3. The slider for slide fastener according to claim 1 or 2, wherein,

The ventilation holes (H1, H2, H3) penetrate in the front-rear direction.

4. A slider for a slide fastener according to any one of claim 1 to 3,

The aperture of the vent hole outer portion (H1 a) located on the outer side of the slider body (2, 2a, 2 b) among the vent holes (H1, H2, H3) is narrowed from the outer opening end toward the inner opening end of the both ends of the vent hole (H1, H2, H3).

5. The slider for slide fastener according to claim 4, wherein,

The aperture of the vent hole inner portion (H1 b) located on the concave portion (7) side in the vent hole (H1) is narrowed from the inner opening end to the outer opening end in both ends of the vent hole (H1).

6. The slider for a slide fastener according to any one of claims 1 to 5, wherein,

The recessed parts (7, 7a, 7 b) are provided with: a1 st concave portion (8, 8a, 8 b) formed on the upper surface of the upper wing plate (21); and a hole-shaped 2 nd recess (9, 9a, 9B) which communicates with the inside of the 1 st recess (8, 8a, 8B) and the inside of the vent hole (H1, H2, H3), and has a boundary surface (B1, B2, B3) at the boundary between the 2 nd recess (9, 9a, 9B) and the vent hole (H1, H2, H3),

The component parts (5, 6, 14, 15, 6a, 6b, 6 e) are provided with: parts (6, 6b, 6 e) of the second type, which are accommodated in the 2 nd concave parts (9, 9a, 9 b); and 1 st parts (5, 13, 14) which are disposed in the 1 st concave portions (8, 8a, 8 b) and hold the 2 nd parts (6, 6b, 6 e) in the 2 nd concave portions (9, 9a, 9 b).

7. The slider for slide fastener according to claim 6, wherein,

The slider for slide fastener is provided with a slider body (2, 2a, 2 b) and the components (5, 6, 14, 15, 6a, 6b, 6 e), and further with a slider holder (3, 3a, 3 b), wherein the slider holder (3, 3a, 3 b) extends upward from the upper wing plate (21) in order to hold the slider (4), and the distal end portion faces the upper surface of the upper wing plate (21),

The component parts (5, 6, 14, 15, 6a, 6b, 6 e) are provided with: an elastomer as the 2 nd component (6, 6b, 6 e); and a deforming member as the 1 st component (5, 13, 14) that elastically deforms the elastic body by an operation performed on the pull tab (4).

8. The slider for slide fastener according to claim 7, wherein,

The 2 nd concave parts (9, 9a, 9 b) are formed at the front parts of the slider bodies (2, 2a, 2 b),

The deformation members (5, 5 a) are opening/closing members (5, 5 a) which are mounted to the 1 st concave portions (8, 8 a) so as to open/close a gap (G) formed between the distal ends of the tab holding bodies (3, 3 a) and the upper wing plate (21) and are guided so as to be movable forward,

The opening and closing member (5, 5 a) opens the gap (G) at a front limit position and elastically deforms the elastic body, and closes the gap (G) at a rear limit position and is held by the upper wing plate (21).

9. The slider for a slide fastener according to any one of claims 1 to 8, wherein,

A plating film is formed on the surface of the slider body (2, 2a, 2 b) over the entire length of the surface of the vent hole (H1, H2, H3) in the vent direction.

10. A method for manufacturing a slider for a slide fastener, comprising the steps of:

A die casting step in which a slider body (2, 2a, 2 b) is manufactured by die casting, wherein the slider body (2, 2a, 2 b) is a metal slider body (2, 2a, 2 b) including the upper blade (21), the lower blade (22), and a connecting post (23) that connects the upper blade (21) and the lower blade (22) at a front side, a fastener tape passage (25) through which opposite side edge portions of a pair of fastener tapes pass is formed inside the slider body (2, 2a, 2 b), and the slider body (2, 2a, 2 b) is provided with a recess (7, 7a, 7 b), wherein the recess (7, 7a, 7 b) is recessed in a surface of the slider body (2, 2a, 2 b) and is configured to accommodate components (5, 6, 14, 15, 6a, 6b, 6 e); and

And a hole forming step of forming dedicated ventilation holes (H1, H2, H3) for ventilating the outside of the slider body (2, 2a, 2 b) including the fastener tape passage (25) and the inside of the recess (7, 7a, 7 b) by forming holes in a part of the portion that shapes the recess (7, 7a, 7 b) outside the slider body (2, 2a, 2 b).

11. The method of manufacturing a slider for a slide fastener according to claim 10, wherein,

The concave parts (7, 7a, 7 b) of the slider bodies (2, 2a, 2 b) manufactured in the die casting step are provided with: a recess body (71) which is in a constant state at the completion time point of the die casting process and the completion time point of the opening process; and a non-through hole part (72) which is recessed in a non-through state with respect to the recess body (71) at a completion time point of the hole forming process, and which thins a part of a portion forming the recess body (71),

In the hole forming step, the non-through hole portion (72) is formed as a part of the vent holes (H1, H2, H3) by penetrating the non-through hole portion.

12. The method of manufacturing a slider for a slide fastener according to claim 11, wherein,

The vent hole inner portion (H1 b) located on the concave portion (7, 7a, 7 b) side of the vent holes (H1, H2, H3) corresponds to the non-through hole portion (72) at the completion time point of the die casting process, and the aperture of the vent hole inner portion (H1 b) is narrowed from the inner opening end to the outer opening end of the two ends of the vent holes (H1, H2, H3).

13. The method of manufacturing a slider for a slide fastener according to claim 11, wherein,

The punching step is a press working using a punch having a tapered end portion,

The aperture of the vent hole outer portion (H1 a) located on the outer side of the slider body (2, 2a, 2 b) among the vent holes (H1, H2, H3) is narrowed from the outer opening end toward the inner opening end of the both ends of the vent hole (H1, H2, H3).

14. The method for manufacturing a slider for a slide fastener according to any one of claims 11 to 13, wherein,

The method for manufacturing the slider for slide fasteners includes a wet plating step of wet plating the slider body (2, 2a, 2 b) after the hole forming step.