JPH0511762Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention provides a new structure for the post of pierced earrings, making it possible to significantly reduce costs.

[Prior Art] Conventionally, as shown in FIG. 4, a post for this type of pierced earring is made by cutting a round bar 11 made of precious metal into a predetermined length, and cutting a circumferential groove 12 at an appropriate position in the longitudinal direction.
was formed.

This round rod 11 is attached to various ornaments 13, inserted into a hole in the earlobe, and then secured with a stopper 14 called a catch.

[Problems to be solved by the invention] However, in the above conventional example, the post of the pierced earring is formed of a round bar 11 made of precious metal, so the post of the pierced earring has no decorative meaning, and is expensive. The drawback was that a large amount of precious metals were consumed.

Further, when soldering to a decorative body, there is a drawback that it takes a long time to melt and has an adverse effect on the decorative body.

Therefore, this idea aims to manufacture the posts of pierced earrings from precious metal pipes.
In other words, by drawing the precious metal pipe used, it is possible to close the tip of the pipe and form a circumferential groove at the appropriate location along the length of the pipe in one process, thereby further reducing costs. It is ivy.

[Means for solving the problem] In other words, the post of the pierced earring of this invention is made by applying a drawing process to the precious metal pipe by rolling, thereby closing the tip and forming a circumferential groove at an appropriate position along the length of the pipe. It is also characterized by the fact that it has also been formed.

[Function] The pierced earring post of this invention is constructed as described above, so it is significantly more durable than the conventional round bar due to the cost reduction due to the precious metal pipe and the cost reduction due to the pipe processing being done in one step. It has become possible to reduce costs.

Furthermore, the post of the pierced earring obtained by subjecting the precious metal pipe to a drawing process by rolling was comparable in strength to that of a round bar post.

[Embodiment] An embodiment of the pierced earring post of this invention will be described below with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a noble metal pipe, the tip of which is closed to form an insertion portion 2 into the earlobe. Further, 3 is a circumferential groove formed at a certain distance from the insertion portion 2, into which a catch is fitted.

The insertion portion 2 and the circumferential groove 3 are created by setting the unprocessed precious metal pipe 1' into molds 4 and 5 that are roughly divided in half, and
It is formed by rotating the noble metal pipe 1' or the molds 4 and 5 relative to each other and performing a drawing process by rolling.

The insertion portion 2 is made of molds 4 and 5 that are roughly divided in half.
By providing the step 6 at the position where the insertion portion 2 is to be formed, drawing and cutting can be performed at the same time to form a round shape.

Further, the entire noble metal pipe 1 is forged in the molds 4 and 5 when drawing by rolling, and its strength is improved. Therefore, a pierced earring post with sufficient strength to hold the ornament on the earlobe can be obtained.

[Effects of the invention] Since the post of the pierced earring of this invention is constructed as described above, it has a lower cost than the conventional round bar due to the cost reduction due to the precious metal pipe and the cost reduction due to the pipe processing being done in one step. This made it possible to significantly reduce costs.

Also, since the post part is thin and does not take much time to melt when soldering to the decoration,
It is possible to braze the decorative body with almost no adverse effects. Note that if the decorative body itself is thin, the work can be completed quickly, which is more effective.

Furthermore, the post of the pierced earring obtained by subjecting the precious metal pipe to a drawing process by rolling was comparable in strength to that of a round bar post. In particular, the tip is rounded and combined with the circumferential groove for fitting the catch, there is no problem in terms of strength.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the post of the pierced earring of this invention, Fig. 2 is a transverse sectional view,
FIG. 3 is a sectional view showing the state of processing, and FIG. 4 is a sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1... Precious metal pipe, 2... Insertion part, 3... Circumferential groove, 4, 5... Mold, 6... Step, 11... Round bar, 12... Circumferential groove, 13... Decorative body.

Claims (1)

[Scope of utility model registration request] A post for pierced earrings characterized by having a precious metal pipe subjected to a drawing process by rolling to close off the tip and also to form a circumferential groove at an appropriate position along the length of the pipe.