JPH105018A - Structure for coupling jewel or the sorts with holding core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide coupling structure with which an axial holding core is coupled with a jewel or the like so as not to be easily detached later. SOLUTION: Concerning the structure for coupling the jewel or the sorts with the holding core, the core is inserted and adhered into the hole of a jewel or imitation 3. Then, a right cylindrical hole is pierced on the jewel or the sorts, the core having a head part 11 larger than an axial part 12 is inserted from the head part 11 into the hole, and gaps between the head part 11 and the inner face of the right cylindrical hole and between the axial part 12 and the inner wall of the right cylindrical hole are filled with adhesive agents 2 and hardened. A non-circular cross-sectional form part is provided at the head part 11 or axial part 12 of the core and the gap between the cross-sectional form and the inner wall of the hole is filled with the adhesive agent 2 so that rotation block structure can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting a support core with a jewel or the like having a structure in which a support shaft core is not easily detached after being connected to a jewel or the like.

[0002]

BACKGROUND OF THE INVENTION In the present invention, jewels and the like and jewels or the like are used synonymously. The jewels and the like include natural jewels such as quartz, ruby, sapphire, opal, turquoise, and artificial jewels. Includes synthetic jewelry, glass spheres, and other decorations such as coral, amber, and pearls, as well as cobblestones for decoration. A structure in which a spherical gem or the like is connected to the supporting shaft core, that is, a hole is made in the spherical gem or the like, a shaft is connected to the hole, and the shaft is connected to a table, or another gem is attached to the other end of the supporting shaft core. It is widely used for forming a pair of jewels by combining them. In many cases, a shallow blind hole is made in a jewel or the like, and a plate or rod-shaped support shaft core is inserted and bonded with an adhesive.

[0003]

In the above-described joint structure, when an axial separating force is applied between the jewel or the like and the shaft core, or when a rotational force is applied between the jewel or the like and the shaft core, the jewel or the like is damaged. There is a problem that the support shaft core is easily detached. Increasing the length of the coupling portion can slightly increase the coupling strength. However, in the case of a transparent gemstone or the like, the fact that the end of the support shaft is inserted deep inside the gemstone may impair the aesthetic appearance. Also, it is not easy to provide a deep coupling hole even if it is not a transparent jewel or the like. SUMMARY OF THE INVENTION An object of the present invention is to provide a joint structure of a jewel or the like and a support core having a structure in which a support shaft core is not easily detached after the support shaft core is joined to a jewel or the like.

[0004]

In order to achieve the above object, according to the present invention, a connecting structure for a jewel or the like and a supporting core is provided by forming a straight cylindrical hole in the jewel or the like and forming a hole in the jewel or the like. Insert a wick with a large head into the hole from the head,
An adhesive is filled and solidified between the head and the inner surface of the right cylindrical hole, and between the shaft portion and the inner wall of the right cylindrical hole. In the joint structure of the gem or the like and the support core, a non-circular cross-sectional shape portion is provided on a head or a shaft portion of the core, and the adhesive is filled and solidified between the cross-sectional shape and the inner wall of the hole. Thus, a rotation preventing structure can be formed. In the joint structure of the jewel or the like and the support core, a groove is provided on the top surface of the head of the core, and a groove is formed in the head or shaft portion in a direction perpendicular to the center of the axis, and the groove is filled with the adhesive and solidified. By doing so, a rotation preventing structure can be formed. In the connection structure of the jewel or the like and the support core, the head can be any of a flat head, a casing head or a multiple head including a double head.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of a joint structure of a jewel or the like and a support core according to the present invention;
FIG. 2 is a sectional view of the embodiment. Suitable metal rods such as gold, platinum group, silver, iron, copper, brass, those plated with them, and stainless steel can be used as the support shaft core 1. Note that ceramics, reinforced plastics, and the like can be used because they can be formed into a desired shape. The support shaft core 1 includes a shaft 12 and a casing (an inverted truncated cone) head 11 having a larger diameter. The jewel or the like 3 is provided with a shallow hole for receiving the support shaft 1 by a diamond point. The bottom and inner wall surface of the conical hole do not need to be finished smoothly, but are preferably positively roughened. With the adhesive 2 filled in the hole, the support shaft core 1 is inserted from the head 11. For a transparent gem or the like 3, an epoxy resin adhesive that remains transparent after solidification is preferred. The adhesive between the flat part of the head 11 and the bottom of the hole and around the axis 12 solidifies and firmly holds the support shaft core 1. The support shaft core can be more firmly fixed against the pulling and twisting force between the jewel or the like and the support core.

FIG. 3 is a front view and a plan view of a support shaft of a second embodiment of the joint structure of the jewel or the like and the support according to the present invention. In this embodiment, a second head 22 is provided in addition to the first head 23. Further, a notch 21 is provided on the shaft. The first head 2
The resin solidified between the third and second heads 22 cooperates with the resin around the other axis to more firmly support the support shaft core 20 against the tensile force. The notch 21 provided on the shaft 24
The resin that has entered and solidified restricts rotation of the shaft against torsional force.

FIG. 4 is a front view and a bottom view of a support shaft of a third embodiment of the joint structure of the jewel or the like and the support according to the present invention. The head 32 of this embodiment is provided with a slot 33 like a countersunk screw. This slip 3
The solidified resin that has entered 3 is connected to the bottom surface of the hole, thereby restricting the rotation of the shaft against torsional force.

FIG. 5 is a plan view and a front view of a support shaft core of a fourth embodiment of the joint structure of a jewel or the like and a support core according to the present invention. In this embodiment, the shaft 41 of the support shaft core 40 is used.
A cutting surface 43 is provided, and the cross section of the shaft is formed in a partially circular shape. The adhesive filled and solidified between the shaft 41 and the inner wall of the cylinder limits the rotation of the support shaft core 40 against torsional force.

FIG. 6 is a plan view and a front view of a support shaft core according to a fifth embodiment of the joint structure of a jewel or the like and a support core according to the present invention. In this embodiment, the shaft 51 of the support shaft 50 is
And a vertical groove common to the head 52, and the cross section of the shaft 51 and the head 52 is a deformed circle. The adhesive filled and solidified in the groove can restrict the rotation of the support shaft core 40 against the torsional force.

Various modifications can be made to the embodiment described in detail above within the scope of the present invention. Although an example has been shown in which the shaft and the head are formed with a scribe or a groove, the cross-section of the shaft or the head may be made elliptical or elliptical to limit the loosening due to rotation against twisting. Many irregularities may be provided on the shaft. Since a transparent hardening adhesive is preferred for a transparent gem or the like, an example of an epoxy-based adhesive which is transparent after solidification has been given as the adhesive. However, opaque gems or similar need not be transparent,
Other adhesives can be used. The nail head may be shaped like a cross.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a joint structure of a jewel or the like and a support core according to the present invention.

FIG. 2 is a sectional view of the embodiment.

FIG. 3 is a front view and a plan view of a support shaft core of a second embodiment of the joint structure of the jewel or the like and the support core according to the present invention.

FIG. 4 is a front view and a bottom view of a support shaft core of a third embodiment of the joint structure of a jewel or the like and a support core according to the present invention.

FIG. 5 is a plan view and a front view of a support shaft core of a fourth embodiment of the joint structure of the jewel or the like and the support core according to the present invention.

FIG. 6 is a plan view and a front view of a support shaft core of a fifth embodiment of the joint structure of the jewel or the like and the support core according to the present invention.

[Explanation of symbols]

 1, 20, 30, 40, 50,..., Support shaft core 2, adhesive 3, jewelry or the like 11, head 12, shaft 21, cut 22, second head 23, first head 31 Shaft 32 ... Head 33 ... Slit 41 ... Shaft 42 ... Head 43 ... Scissor face 50 ... Support shaft core 51 ... Shaft 52 ... Head 53 ... Vertical groove

Claims (1)

[Claims] 1. A joint structure of a jewel or the like and a support core for inserting and bonding a core into a hole of a jewel or the like, wherein a straight cylindrical hole is formed in the jewel or the like and a head larger than the shank. A core having a portion is inserted from the head into the hole, and the head and the inner surface of the straight cylindrical hole, between the shaft portion and the inner wall of the straight cylindrical hole, are filled with an adhesive and solidified. The combined structure of the support core with the constructed jewel or similar.