JP2006026143A - Pierced-earring catch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To insert/fix a piercing pin having a different diameter. <P>SOLUTION: This resin pierced-earring catch 1 is provided with a pin hole 30 for inserting a piercing pin 40 (50) and is so constituted that the pin hole 30 is a through-hole with an entrance 16 and an exit 20 and formed into a funnel shape gradually narrowing from the entrance 16 toward the exit 20, and inner wall cross sections 14 and 18 of the pin hole 30 are formed into curved shape projecting to the radially inner part of the pin hole 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a piercing catch. Specifically, the present invention relates to a piercing catch that can insert and fix a pierspin having a predetermined diameter size range.

The pierced ear is composed of a decorated pierced body and a piercing catch. These are typically sold as a set.
The pierce body is provided with a pier spin. Pierspin is a metal needle and has a diameter of 0.5 mm to 0.8 mm.
The piercing catch is generally a translucent silicone resin having a size of about 5 to 7 mm so as not to be noticeable. The pierce catch is formed with a pin hole for inserting a pair of pier spins. The diameter of the pin hole is formed in a size corresponding to the diameter dimension of the paired pierspin.
In addition, the piercing described in Patent Document 1 is known as this type of piercing.
JP-A-7-308211

However, the above-mentioned piercing catch has a problem that it cannot insert and fix other sets of pier spins well. In other words, it is difficult to insert with a pier spin with a large diameter, and it will come off with a pier spin with a small diameter.
Also, the piercing catch is inconspicuous as described above, and only the pierce pin may be lost. In this case, other piercing catches could not be substituted, and it was necessary to buy a set again.
The present invention has been devised in view of the above points. That is, the problem to be solved by the present invention is to enable insertion / fixation even for pier spins having different diameters.

In order to solve the above problems, each invention of the present invention takes the following means.
First, the piercing catch according to the first invention is a resin piercing catch having a pin hole through which a pier spin is inserted, and the pin hole is a through hole having an inlet and an outlet, and from the inlet. It is formed in a funnel shape that narrows toward the outlet, and the inner wall section of the pin hole is formed in a curved shape that is convex inward in the radial direction of the pin hole.

In the first invention, a funnel-shaped pin hole is formed in the piercing catch. That is, the diameter of the pin hole increases toward the end of the pin hole. The diameter decreases from the entrance to the exit.
Moreover, the cross section (inner wall cross section) of the inner wall of the pin hole cut along the plane passing through the pin hole axis is a curved shape. This circular arc draws a convex curve toward the inside in the radial direction of the pin hole.

  Here, the “curved shape that is convex inward in the radial direction of the pin hole” includes an arc shape that is a part of the circumference, an arcuate curved shape, and the like.

Next, the piercing catch according to the second invention is the piercing catch according to the first invention, wherein the resin is a silicone resin, the inlet and the outlet have a substantially circular shape, and the diameter of the inlet is 0. 0. 65 mm to 0.70 mm, and the outlet diameter is 0.02 mm to 0.05 mm.
In the second invention, the piercing catch is made of silicone resin. The pierce catch has a substantially circular inlet and outlet. The inlet and the outlet have a predetermined diameter dimension.

Next, the piercing catch according to the third invention is the piercing catch according to the second invention, and a coloring agent is added to the silicone resin.
In the third invention, the piercing catch is colored and formed.

Next, the piercing catch according to the fourth invention is the piercing catch according to the first to second inventions, wherein the piercing catch is an integrally formed product comprising a main body portion and a gripping portion, and the outer shape of the main body portion is A flange-shaped gripping portion is formed on the bottom surface of the main body portion, which has a bell shape and is located on the opposite side of the top portion of the main body portion, and a pin hole extends through the gripping portion and the main body portion. Formed, an inlet is formed in the grip portion, and an outlet is formed at the top of the main body.
In 4th invention, the holding part is formed in the piercing catch. Moreover, the entrance is formed in the holding part side of the piercing catch.

According to the present invention described above, the following effects can be obtained.
First, according to the first invention, since the pin hole is enlarged toward the entrance, the insertion load at the time of inserting the pin hole can be suppressed even with a pier spin having a large diameter.
Moreover, the inner wall which draws a convex curve narrows rapidly from the vicinity of the entrance. For this reason, the contact area between the inserted pier spin and the pin hole inner wall is larger than that of the pierce catch having a linear inner wall surface. As a result, even a pierspin having a small diameter can be stably supported by a large contact area.
Moreover, since the inner wall cross section from the entrance to the exit is a curve, the inserted pier spin can be guided to the exit without difficulty.

Next, according to the second invention, the piercing catch has the elasticity inherent in the silicone resin. Furthermore, since the entrance has a predetermined diameter dimension, an increase in insertion load can be suppressed even for a pier spin having a diameter dimension of about 0.8 mm.
Further, since the pin hole is suddenly narrowed to the outlet having a predetermined diameter, the supporting force in the vicinity of the outlet is increased. Therefore, even a pier spin having a diameter of about 0.5 mm can be stably fixed.

Next, according to 3rd invention, since the piercing catch is colored and formed, it is easy to see. Since the piercing catch is easily noticeable, it can be prevented from being lost. Colored earring catches are excellent in fashion.
Next, according to the fourth aspect of the invention, the pierce catch can be stably held as much as the grip portion is formed. In addition, since the entrance is formed on the side of the gripping portion of the piercing catch, it is possible to prevent or reduce the wrong direction of the pin hole.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a piercing catch, FIG. 2 is a front view of a gripping portion, and FIGS. 3 to 5 are sectional views of the piercing catch.

The piercing catch 1 according to the present embodiment is a fixture for fixing a piercing body (not shown). The pierced body is provided with a needle-shaped pierspin 40 (50) (see FIGS. 4 and 5).
The pierce catch 1 is formed with a pin hole 30 for inserting the pier spin 40 (50). The pin hole 30 has a shape capable of inserting and fixing a peer spin from a peer spin 40 having a diameter dimension TL to a peer spin 50 having a diameter dimension TS.

[Piercing catch outline]
The piercing catch 1 in FIG. 1 is an integrally molded product made of silicone resin, and the width dimension tw in the left-right direction is 6 mm as seen in the same figure.
The piercing catch 1 includes a main body portion 10 and a grip portion 12. The piercing catch 1 is formed with a pin hole 30 to be described later that penetrates the main body 10 and the grip 12.
First, the outer shape of the main body 10 has a bell shape. An outlet 20 of the pin hole 30 is formed at the top of the left main body 10 as viewed in FIG. In addition, a grip portion 12 is integrally formed on the bottom surface of the main body portion 10 on the right side as viewed in FIG.
The grip portion 12 is a flange-shaped member protruding from the peripheral edge portion of the bottom surface of the main body portion 10. As shown in FIG. 1, the inlet 16 of the pin hole 30 is formed on the right surface of the grip 12. The inlet portion 16 is formed substantially at the center of the grip portion 12 when viewed from the front of FIG.

The inlet 16 is a front circular opening as shown in FIG.
Also, the diameter dimension ti of the inlet portion 16 shown in FIG. 3 is set to a size that allows insertion of a pier spin 40 larger than the pier spin 50.
Further, the diameter dimension ti of the inlet portion 16 is formed smaller than the diameter dimension TL of the pier spin 40. By making the entrance portion 16 small, it is possible to increase the area of the inner wall that contacts and supports the pier spin 40 (50).
Even if the diameter dimension ti of the inlet portion 16 is slightly smaller than the diameter dimension TL, the inlet section 16 can be expanded to the diameter dimension TL by the elasticity of the silicone resin described later.
Further, the diameter dimension ti of the inlet portion 16 is formed larger than the diameter dimension TS of the pier spin 50. By increasing the entrance portion 16, it is possible to suppress an increase in the indentation load of the pier spin 40 (50).

The diameter dimension ti of the inlet portion 16 of the present embodiment is set to 0.65 mm to 0.7 mm.
If the diameter dimension ti is within this range, as shown in FIG. 5, the pierspin 50 having a diameter dimension TS of 0.5 mm can be supported and fixed.
Further, as shown in FIG. 4, even if the pier spin 40 has a diameter TL of 0.8 mm, an increase in the indentation load can be suppressed.

The outlet 20 is a front circular opening (not shown).
Further, the diameter dimension td of the outlet portion 20 shown in FIG. 3 is set to a substantially zero dimension. That is, the diameter dimension td of the outlet part 20 is set to 1/10 to 1/40 of the diameter dimension of the inlet part 16.
By making the diameter dimension td of the outlet 20 extremely small, the supporting force for supporting the pierspin 40 (50) in contact with the outlet 20 increases in the vicinity of the outlet 20.
Furthermore, the diameter dimension td of the outlet portion 20 is desirably set to 1/13 to 1/35 of the diameter dimension ti of the inlet portion 16. If it is this range, the increase in the load applied when the exit part 20 of the pier spin 40 (50) passes can also be suppressed.

The diameter dimension td of the outlet portion 20 of the present embodiment is 0.02 mm to 0.05 mm.
If the diameter dimension td is within this range, as shown in FIG.
Moreover, as shown in FIG. 4, even if it is the pier spin 40 whose diameter dimension TL is 0.8 mm, the exit part 20 can be passed through without waste.

[Pin hole]
The pin hole 30 of FIG. 3 is a through-hole penetrating the main body portion 10 on the left and right as viewed in FIG. The pin hole 30 is formed in a shape (funnel shape) that gradually narrows from the inlet portion 16 toward the outlet portion 20.
Further, the inner wall of the pin hole 30 has a circular arc shape that is convex inward in the radial direction of the pin hole 30. The upper inner wall surface 14 is a circular arc projecting downward as seen in FIG. Further, the lower inner wall surface 18 is an arc projecting upward in the figure.

The degree of curvature (curvature) drawn by the upper inner wall surface 14 and the lower inner wall surface 18 is arbitrary.
When the curvature is large, the degree to which both the inner wall surfaces 14 and 18 approach is increased. By increasing the degree of approach between the inner wall surfaces 14 and 18, the area of the inner wall that supports the peer spin 40 (50) can be increased.
Further, when the curvature is small, the degree of approach between the inner wall surfaces 14 and 18 becomes small. Since the degree to which both the inner wall surfaces 14 and 18 approach becomes smaller, the insertion load when the peer spin 40 (50) is inserted becomes smaller.

For example, if the curvature radii R of the inner wall surfaces 14 and 18 are 60 mm to 70 mm, as shown in FIG. 5, the required predetermined supporting force can be obtained even with the Pierspin 50 having a diameter dimension TS of 0.5 mm.
Further, as shown in FIG. 4, even if the pier spin 40 has a diameter TL of 0.8 mm, the indentation load can be suppressed.
Both inner wall surfaces 14 and 18 of the present embodiment are set to a radius of curvature R64.5 mm.

[Material of piercing catch]
As the material of the piercing catch 1, various resins, elastomers, and rubbers conventionally used as the material of the piercing catch 1 can be used.
The piercing catch 1 of the present embodiment uses a silicone resin as its material. The silicone resin has elasticity required for the piercing catch 1. For this reason, it is desirable as a material for the piercing catch 1. Silicone resin is preferable as a material for the piercing catch 1 because it has excellent processability and can easily process the outer shape of the piercing catch 1 and the shape of the pin hole 30 described above.
Moreover, the piercing catch 1 of a present Example uses the silicone resin which added the coloring agent as the material. Known pigments and dyes are used as the colorant.
In addition, you may color the piercing catch 1 by apply | coating a coloring agent to the surface.

[Action / Effect]
First, the pin hole 30 is widened toward the inlet 16. For this reason, even if it is the pier spin 40 whose diameter dimension TL is 0.8 mm, the insertion load at the time of pin hole 30 insertion can be suppressed.
Further, the convex inner wall surfaces 14 and 18 suddenly narrow from the vicinity of the inlet 16 to the outlet 20. For this reason, the contact area between the inserted pierspin 40 (50) and the inner wall surfaces 14 and 18 is larger than that of the pierce catch 1 having a linear inner wall surface. As a result, even a pier spin 50 having a diameter TS of 0.5 mm can be stably supported by a large contact area.
Moreover, since both the inner wall surfaces 14 and 18 from the entrance part 16 to the exit part 20 are circular arcs, the inserted pier spin 40 (50) can be guided to the exit part 20 without difficulty.

Next, the piercing catch 1 has the elasticity inherent in the silicone resin. Furthermore, since the inlet portion 16 has a diameter dimension ti of 0.65 mm to 0.7 mm, an increase in insertion load can be suppressed even for the pier spin 40 having a diameter dimension TL of 0.8 mm.
Further, the pin hole 30 is abruptly narrowed toward the outlet portion 20 having a diameter dimension td of 0.02 mm to 0.05 mm. For this reason, the supporting force in the vicinity of the outlet portion 20 is increased, and even the pierspin 50 having the diameter dimension TS of 0.5 mm can be stably fixed.

Next, since the piercing catch 1 is formed in a colored manner, it is easily visible to the human eye. Since the piercing catch 1 is easily noticeable, it can be prevented from being lost. Colored earring catches are excellent in fashion.
Next, the piercing catch 1 can be stably held as much as the grip portion 12 is formed. Moreover, since the entrance part 16 is formed in the holding part 12 side of the piercing catch 1, it can prevent or reduce that the direction of the pin hole 30 is mistaken.

[Other embodiments]
The piercing catch 1 according to the present invention is not limited to the above-described embodiment, and can take other various embodiments.
First, the shape and size of the main body 10 can be changed. That is, the width dimension tw of the main body 10 in FIG. 1 may be smaller than 6 mm or larger. Further, the shape of the main body 10 may be various shapes such as a semi-circle, a rectangle, and a quadrangle when viewed from the side of FIG.
Next, the shape and size of the grip portion 12 can be changed. For example, the shape may be an ellipse, a triangle, a quadrangle, or a heart shape when viewed from the front of FIG. Further, if the main body portion 10 is easy to grip, the grip portion 12 is not necessarily provided.
In addition, the shapes of the inlet portion 16 and the outlet portion 20 can also be changed in accordance with the inserted pier spin.

  Next, both the main body 10 and the grip 12 may be colored differently. Further, only one of them may be colored. This is because the mistake in the direction of the pin hole 30 is further eliminated. If there is no possibility of loss due to the shape and size of the piercing catch 1, there is no need to color it.

It is a side view of a piercing catch. It is a front view of a holding part. It is sectional drawing of a piercing catch. It is sectional drawing of the piercing catch of use condition. It is sectional drawing of another example of the used piercing catch.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pierce catch 10 Main-body part 12 Grip part 14 Upper inner wall surface 16 Inlet part 18 Lower inner wall surface 20 Outer part 30 Pin hole 40, 50 Pier spin R Curvature radius td Diameter dimension ti Diameter dimension tw Width dimension

Claims (4)

A resin-made piercing catch with a pin hole through which the pierspin is inserted,
The pin hole is a through hole having an inlet and an outlet, and is formed in a funnel shape that narrows from the inlet toward the outlet;
A piercing catch characterized in that the inner wall cross-section of the pin hole is formed in a curved shape that is convex inward in the radial direction of the pin hole. A piercing catch according to claim,
The resin is a silicone resin;
The inlet and the outlet have a substantially circular shape,
The diameter of the inlet is 0.65 mm to 0.70 mm,
A piercing catch characterized in that the diameter of the outlet is 0.02 mm to 0.05 mm. A piercing catch according to claim 2,
A piercing catch, wherein a colorant is added to the silicone resin. A piercing catch according to any one of claims 1 to 3,
The piercing catch is an integrally molded product composed of a main body part and a grip part,
The outer shape of the main body has a bell shape,
On the bottom surface of the main body portion located on the opposite side of the top portion of the main body portion, the flange-shaped gripping portion protruding from the peripheral edge of the bottom surface is formed,
The pin hole is formed through the grip portion and the body portion,
A piercing catch characterized in that the inlet is formed in the grip portion and the outlet is formed at the top of the body portion.

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