JPH114707A - Catch for pierced earring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a using cost by reducing the thickness of a member to be used. SOLUTION: A catch for a pierced earing is constituted of a land part 2 provided with a through hole 3 in its center and a pair of wing parts 4 opposed by inserting this hole 3 and curves this pair of wing parts 4 to the same side with respect to the part 2 with repulsiveness to each other. Long grooves (a) are formed in the longitudinal direction of the parts 4 and the long grooves are made continued grooves reaching the hole 3 through the part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pierce catch.

[0002]

2. Description of the Related Art In recent years, so-called piercings that pierce an earlobe and insert a pin therethrough have been widely used. In this pierced earring, a pin extending from the decoration is passed through a hole in the earlobe, and the pin is stopped by a catch on the back side of the earlobe.

This catch is made of a precious metal material such as gold, silver or platinum, and is usually shown in FIGS.
As shown in the figure, a through hole 12 is formed in the center of the land portion 11, and wing portions 13, 13 are provided at symmetrical positions of the land portion 11. The wing portions 13, 13 are curved to make the outer surface. When the pin (not shown) is passed through the through hole 12, the wings 13 and 13 are bent from the left and right sides when the pin is passed through the through-hole 12. The outer surfaces of the curved wings 13 and 13 are elastically contacted to fix the pin.

However, if the precious metal material constituting the catch is a flat plate, the strength and the resilience to be provided are weak, and therefore, the groove 14 is formed particularly on the land portion 11 and the wing portion 13 to increase the section modulus. In addition, an idea to increase the strength and elasticity has been proposed (Japanese Utility Model Application Laid-Open No. 56-21081).
1). The idea is to increase the resilience of the curved wings 13, 13 compared to catches made in the form of a flat plate, to reduce the settling, and to reduce the pin fastening force over time. This has the advantage that a catch that does not occur can be obtained.

[0005]

However, there is still a problem to be solved even with the catch which has been widely used in the past. Particularly, the strength of the land portion 11 is required to be increased, and the precious metal used is not required. It would be more preferable if the amount used could be reduced.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the gist of the present invention is to oppose a land portion having a through hole at the center and a land portion having the through hole interposed therebetween. A pair of wings and a piercing catch formed by bending the pair of wings to the same side with respect to the land with resiliency to each other, forming a long groove in the longitudinal direction of the wings, A pierce catch characterized in that the long groove is a continuous groove that reaches the through hole through the land.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a catch having the above structure, in which the elasticity of a curved wing portion is imparted by a long groove, and the long groove passes through a land portion and extends to a through hole. As a result, it is possible to reliably prevent the wing portion and the land portion from decreasing in strength. The shape of the land portion is, for example, a disk shape or a square shape, and is not particularly limited.

[0008] Characteristically, since the grooves are continuous in the land portion facing the pin, the strength of the land portion is remarkably improved, and the land portion of the important catch with respect to the pin is bent. There is no loss or sagging.

Conversely, if the strength of the land and the wing of the conventional catch is sufficient, the thickness of the land and the wing constituting the catch of the present invention can be reduced. In this case, the amount of the noble metal material used can be reduced, which contributes to cost reduction.

[0010] The long groove a constituted in the present invention is:
Of course, it may be concave inside the catch or protrude in a mountain shape.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a piercing catch according to the present invention. FIG. 1 is a front view showing a first example of a catch for piercing of the present invention, and FIG. 2 is a side view thereof. FIG. 3 is a development view of FIG. 1, and FIG.
It is sectional drawing in the -A line. FIG. 5 is an enlarged sectional view taken along line BB of FIG.

In the figure, reference numeral 1 denotes a catch made of K-18, and a through hole 3 for pin insertion is formed in the center of the circular land portion 2, and the wing portions are formed on both sides of a diagonal line with the through hole 3 interposed therebetween. 4,
4 are formed. The wings 4, 4 are elastically curved to the same side with respect to the land 2,
When a pin (not shown) passes through the through-hole 3, the curved wings 4, 4 are fixed by being pressed from the left and right of the pin.

As shown in FIGS. 4 and 5, a long groove a is formed in the wing portions 4, 4 toward the curved side.
In addition to increasing the strength of the wings 4 and 4, it has a function of providing resilience and maintaining the resilience for a long period of time.

On the other hand, in the land portion 2, a long groove a extending from the long hole a formed in the wing portion 4 and reaching the central through hole 3 of the land portion 2 is formed as shown in FIG. Things.
The strength of the land portion 2 is remarkably improved by forming the long groove a, and the strength of the base portion of the wing portions 4, 4 connected to the land portion 1 can be maintained by connecting this to the long groove a. It is a thing.

FIG. 6 is a development view showing a second example of the piercing catch of the present invention. The wings 4 and 4 have a structure that is gradually wider than the land 1 and the long groove a is gradually formed. In this structure, the groove width is increased to reach the through hole 3.

[0016]

As described above, the present invention improves the strength of the entire piercing catch and maintains the elasticity of the curved portion for a long period of time. Therefore, if the same strength as the conventional catch is sufficient, the thickness of the member to be used can be made thinner, and the object of cost reduction can be achieved.

Further, when the long groove is formed to be concave in the land portion of the catch, if the pin fits into this long groove, it can be directly guided to the through hole.

[Brief description of the drawings]

FIG. 1 is a front view showing a first example of a catch for piercing of the present invention.

FIG. 2 is a side view of the catch shown in FIG. 1;

FIG. 3 is a development view of the catch shown in FIG. 1;

FIG. 4 is a sectional view taken along line AA in FIG. 3;

FIG. 5 is an enlarged sectional view taken along line BB of FIG. 3;

FIG. 6 is a developed view showing a second example of the catch of the present invention.

FIG. 7 is a front view of a conventional catch.

FIG. 8 is a development view of the catch of FIG. 7;

[Explanation of symbols]

 1 ‥‥ catch, 2 ‥‥ land, 3 ‥‥ through hole, 4 ‥‥ wing, a ‥‥ long groove.

Claims (1)

[Claims] 1. A land portion having a through hole in the center, a pair of wing portions opposed to each other across the through hole, and the pair of wing portions being resiliently arranged on the same side with respect to the land portion. What is claimed is: 1. A pierce catch that is curved, wherein a long groove is formed in a longitudinal direction of a wing portion, and the long groove is a continuous groove that reaches a through hole via a land portion.