JP2004187916A - Eyelet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an eyelet that does not cause a damage of a synthetic resin, does not expose the edge portion of a caulking leg in a plane view of a normal used state, and is durable and very decorative. <P>SOLUTION: The eyelet is made up of a metal male body (1) in which a flange (11) is formed in the entire periphery of one end of a cylindrical caulking leg (10), a decorative body (2) made of a synthetic resin made by forming an erected edge (21) at the outside edge portion of an annular decorative portion (20), and a metal female body (3) in which a central hole (30) corresponding to the caulking leg (10) of the male body (1) is formed. The eyelet brings the outside (13) of the flange (11) of the male body (1) into a tight contact with the inside (22) of the decorative body (2) by caulking and fixing the erect edge (21) of the decorative body (2) made of the synthetic resin to the flange (11) of the male body (1), and the caulking leg (10) of the male body (1) caulks and fixes a mounting substrate (4) and the central hole (30) of the female body (3) by communicating therebetween. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a metal eyelet provided with a synthetic resin decorative part.
[0002]
[Prior art]
As a disclosure of a metal eyelet provided with a synthetic resin decorative portion, a female body made of a hard material made of the synthetic resin (or a metal or the like) is formed into an annular body having a locking hole penetrated, In the locking hole, while forming a tapered surface that expands from the bottom surface to the top surface, a flange portion, and a cylindrical piece inserted into the locking hole with an object to be mounted such as a cloth interposed therebetween. There is a known eyelet which is formed by expanding the cylindrical piece of a male body comprising a molding die inserted from the top surface side of the female body so as to be in close contact with the tapered surface of the locking hole, and by caulking. (For example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 5-80312
[Problems to be solved by the invention]
The device according to Patent Document 1 is a device in which the caulking leg of the male body is not exposed on the female body side in a general eyelet, and forms a tapered surface that expands from the bottom surface toward the top surface. The swaging leg is expanded so as to be in close contact with the tapered surface.
[0005]
In particular, in the case where the female body is formed of a synthetic resin in the eyelet according to the invention, the decorative property can be enhanced, but the synthetic resin needs to be hard. That is, since it is necessary to directly caulk the synthetic resin with the caulking legs, it is necessary to ensure sufficient strength. However, even when the normal strength is secured, the eyelet may be damaged due to a sudden load acting due to the rigidity of the synthetic resin.
[0006]
Further, in the eyelet according to Patent Document 1 described above, as shown in FIG. 6, although the caulking leg 90 does not protrude from the engagement hole, the edge of the caulking leg 90 having no decoration function is provided on the decorative portion 9. Since it is exposed as it is, there is a disadvantage that it is inferior to decorative products in this respect.
[0007]
Furthermore, since the caulking leg is attached so as to be in close contact with the tapered surface, the strength of the caulking leg itself is weak, and the rattling is likely to occur due to deterioration over time, and the durability is not sufficient. Met.
[0008]
On the other hand, in eyelets made entirely of resin, mounting holes must always be formed in advance in the mounting cloth, which is very inconvenient.
[0009]
The present invention has been made in view of the above circumstances, does not cause damage to the synthetic resin, does not directly expose the edge of the swage leg in plan view in a normal use state, and has excellent durability. It is an object of the present invention to provide a metal eyelet having an excellent decorative property and a decorative portion made of a synthetic resin.
[0010]
[Means for Solving the Problems]
A metal male body with a flange formed on the entire periphery of one end of the cylindrical caulking leg, a synthetic resin decorative body having an upright edge formed at the outer edge of the annular decorative portion, and a caulking leg of the male body A metal female body having a corresponding central hole formed therein, and the outer surface of the male body flange and the inner surface of the decorative body are brought into close contact with each other, and the synthetic resin decorative body is The eyelet, which is characterized in that the standing edge is crimped and fixed, and the male caulking leg communicates with the mounting cloth and the central hole of the female body and is caulked and fixed, as a means for solving the problem .
[0011]
【The invention's effect】
According to the present invention, when the rising edge of the synthetic resin decorative body is fixed to the male flange by caulking with the above configuration, the male flange and the inner surface of the decorative body are brought into close contact with each other. Thereby, by ensuring the strength of the decorative body, it is possible to make the decorative body excellent in durability, and it is possible to prevent the decorative body from cracking.
[0012]
According to the present invention, the edge of the caulked leg in the decorative portion is not exposed as it is near the center hole, and the entire decorative portion can be covered with the synthetic resin, and the synthetic resin is transparent or translucent. By doing so, it is possible to present the male body made of metal through it, and it is possible to provide an eyelet with a high degree of decorativeness, which is richer in resin gloss than ever before.
[0013]
Further, as described above, the strength of the decorative body is ensured when the upright edge of the synthetic resin decorative body is caulked against the male flange, so that the decorative body made of synthetic resin is secured. However, a general eyelet driving machine that performs caulking after inserting the male engaging leg through the mounting material into the center hole of the female body can be used. Therefore, with the existing equipment, it is possible to manufacture eyelets with a new decorative property, and since conventional eyelets can be used for male and female bodies, it is necessary to make holes in the mounting cloth in advance. No, so-called self-piercing eyelets can also be used.
[0014]
In the case where the decoration is formed by injection molding using nylon at a pressure of about 35 t under a condition of 210 ° C. to 250 ° C., a particularly useful decoration can be obtained.
[0015]
In addition, the decorative body, when the thickness of the upright edge is made smaller than the thickness of the annular decorative portion and a step is formed between the upright edge and the edge portion of the annular decorative portion, the upright edge of the decorative body is formed. At the time of caulking, only the rising edge can flexibly bend and the load for deforming the annular decorative portion can be reduced, and a gap is created between the male body and the decorative body when caulking the rising edge. This prevents the decorative body from being damaged when mounted on the mounting cloth.
[0016]
Embodiments and Examples of the Invention
FIG. 1 is a cross-sectional view showing a state where a male body and a decorative body of an eyelet according to an embodiment of the present invention are mounted, and FIG. 2 is a cross-sectional view showing a state where a male body and a decorative body of the eyelet according to the embodiment are mounted and swaged. FIG. 3 is an explanatory cross-sectional view showing a state immediately before fixing the eyelet to the mounting cloth according to the embodiment. FIG. 4 is an explanatory cross-sectional view showing a state where the eyelet according to the embodiment is fixed to the mounting cloth. FIG. 5 and FIG. 5 are plan views showing the attachment state of the eyelets according to the embodiment, and FIG. 6 is a plan view showing the attachment state of the eyelets according to the prior art.
[0017]
The eyelet according to the embodiment of the present invention includes a decorative body 2 made of a synthetic resin and a male body 1 and a female body 3 made of metal. Hereinafter, the eyelets according to the present embodiment will be described in detail.
[0018]
First, the decorative body 2 uses nylon 6 (Unitika Nylon 6, CX-2500: manufactured by Unitika Ltd.) as a synthetic resin, and has a temperature of 200 ° C to 300 ° C, more preferably 210 ° C to 250 ° C. It is manufactured by performing injection molding at an injection pressure of 35 t below. As shown in FIG. 1, the decorative body 2 includes an annular decorative portion 20 having a central hole 25 formed therein, and an annular decorative portion 20. It is an annular body comprising an upright edge 21 having a height of about 1.56 mm formed on the outer peripheral edge, and a concave portion 23 having an arc shape in cross section is formed on the inner surface 22 of the annular decorative portion 20 in a ring shape. .
[0019]
The thickness of the annular ridge portion 24 of the annular decorative portion 20 to which the load is most applied is set to 0.7 mm, and the peripheral portion from the annular ridge portion 24 to the outer end portion 27 and the inner end portion 28 has a minimum value of 0.1 mm. The thickness is formed so that the thickness gradually decreases as the distance from the annular ridge portion 24 increases to 5 mm, and the variation in the thickness is extremely high within ± 0.05 mm.
[0020]
Further, the thickness of the upright edge 21 of the decorative body 2 is set to about 0.35 mm, and the thickness of the upright edge 21 and the base end of the annular decorative section 20 is reduced by making the thickness of the annular decorative section 20 thinner than 0.7 mm. A step 26 is formed therebetween.
[0021]
Next, as shown in FIG. 1, the male body 1 is provided with a self-piercing function at the end (the function of forming the mounting hole in the mounting cloth without the necessity of forming a mounting hole in the mounting cloth in advance). A flange 11 is formed on the entire circumference of the cylindrical caulking leg 10 on the base end side. Here, the recess 23 formed on the inner surface 22 of the decorative body 2 and the outer surface 13 of the flange 11 can be in close contact with each other.
[0022]
The female body serves as a so-called seat, as shown in FIG. 3, and is an annular body having a central hole 30 formed therein. By doing so, it cuts into the mounting cloth 4.
[0023]
First, as shown in FIG. 1, as shown in FIG. 1, a male body 1 and a decorative body 2 made of colored and transparent synthetic resin having an upright edge 21 formed on an outer edge of an annular decorative portion 20 are attached to the male body 1 shown in FIG. As shown in the figure, the flange 11 of the male body 1 and the inner surface 22 of the decorative body 2 are brought into close contact with each other, and the upright edge 21 of the decorative body 2 standing on the peripheral edge is swaged, and the peripheral portion of the flange 11 of the male body 1 is formed. 14 is held and fixed. Thereby, the decorative body 2 and the male body 1 are integrally fixed.
[0024]
Thereafter, the tubular caulking leg 10 is penetrated by the tubular caulking leg 10 and further communicates with the annular metallic female body 3 which forms the central hole 30 and forms an annular shape. Fix it.
[0025]
Here, as described above, in the present invention, the decorative body 2 uses nylon 6, but other than this, other nylon, polyurethane, polyacetal, silicone polymer or the like can also be used. However, the nylon 6 disclosed in this example is particularly excellent in that the molding conditions are relatively slow and a colorless, colored and transparent decorative body can be manufactured at low cost.
[0026]
Further, when nylon 6 is used in the above embodiment, the injection is performed at a temperature of 200 ° C. to 300 ° C., more preferably 210 ° C. to 250 ° C., and an injection pressure of 35 t. If the temperature exceeds 300 ° C., the strength will be reduced, and it will not be usable.
[0027]
As described above, according to the present invention, the decorative body 2 made of a synthetic resin is formed under specific conditions, and in its shape, the decorative body 2 is shaped to be in close contact with the male body 1 to secure sufficient strength. It is possible to obtain an eyelet provided with a decorative body made of a synthetic resin which is not broken even by work.
[0028]
In addition, the decorative body can be transparent or translucent, and since the metal part is not directly exposed to the decorative part, a very excellent invention which can produce an unprecedented excellent aesthetics It is.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a state where a male eyelet and a decorative body according to an embodiment of the present invention are mounted.
FIG. 2 is a cross-sectional view showing a state in which the male body and the decorative body of the eyelet according to the embodiment of the present invention are attached and caulked.
FIG. 3 is an explanatory sectional view showing a state immediately before the eyelet according to the embodiment of the present invention is fixed to a mounting cloth.
FIG. 4 is an explanatory sectional view showing a state in which the eyelets according to the embodiment of the present invention are fixed to a mounting cloth.
FIG. 5 is a plan view showing an attached state of the eyelets according to the embodiment of the present invention.
FIG. 6 is a plan view showing an attached state of eyelets according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Male body 10 Caulking leg 11 Flange 12 Hole 13 Outer surface 14 Peripheral part 2 Decorative body 20 Annular decorative part 21 Standing edge 22 Inner surface 23 Depression 24 Annular ridge 25 Center hole 26 Step 27 Outer end 28 Inner end 3 Female body 30 Central hole 4 Mounting cloth 9 (Prior art) Eyelet 90 (Prior art) Caulking leg

Claims (4)

A male male body (1) having a flange (11) formed on the entire circumference of one end of a cylindrical caulking leg (10), and an upright edge (21) formed at an outer edge of an annular decorative portion (20). A decorative body (2) made of synthetic resin, and a female female body (3) having a central hole (30) corresponding to the caulking leg (10) of the male body (1);
The outer surface (13) of the flange (11) of the male body (1) and the inner surface (22) of the decorative body (2) are brought into close contact with each other, and the synthetic resin is placed against the flange (11) of the male body (1). Caulking the standing edge (21) of the decorative body (2) made of
An eyelet, wherein the caulking leg (10) of the male body (1) communicates with the mounting cloth (4) and the central hole (30) of the female body (3) and is caulked and fixed. The eyelet according to claim 1, wherein the decorative body (2) is made of a transparent or translucent synthetic resin. The eyelet according to claim 1 or 2, wherein the decorative body (2) is made of nylon 6 and is injection-molded at a pressure of about 35 t under a condition of 210 ° C to 250 ° C. The decorative body (2) is configured such that the thickness of the upright edge (21) is smaller than the thickness of the annular decorative portion (20), so that the upright edge (21) and the base end of the annular decorative portion (20) are in contact with each other. The eyelet according to claim 1, 2 or 3, wherein a step (26) is formed between the eyelets.

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