Post for accessory and accessory

Abstract

To provide a post capable of preventing a decorative body from falling off due to deformation, and accessory equipped with the post.SOLUTION: An accessory 1 comprises a post 3 to be inserted into a hole pierced in a body and a decorative body 5 to be attached to the post 3. The post 3 includes a columnar post body 10 formed of ceramics, and a protrusion 20 provided on the post body 10 and protruding in a direction perpendicular to a longitudinal direction of the post body 10. An end 15 of the post body 10 is inserted into the hole pierced in the body. A part (an attachment part 12) from an end 11 of the post body 10 to the protrusion 20 is attached to the decorative body 5 of the accessory 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a post used in an ornament and to the ornament. [Background technology]

[0002] Piercings are a type of jewelry worn in holes made in the body (such as the earlobe). The cylindrical part inserted into the hole in a piercing is called a post. A jewel or other decorative object is attached to the end of the post. Summary of the Invention [Problem to be solved by the invention]

[0003] In some cases, a portion of a precious metal post is inserted into a hole in the decorative body, and the decorative body and post are fixed inside the hole with adhesive. In this case, if a strong force is applied to the post, it will bend and deform near the entrance of the hole in the decorative body, and a force will act on the post in the direction of pulling it out of the hole in the decorative body, making it more likely to separate from the decorative body. Therefore, typical precious metal posts have a flange-like portion at the base of the columnar portion that is adhesively fixed to the decorative body. By adhesively adhering this flange-like portion to the outer surface of the decorative body, the post is less likely to deform near the entrance of the hole in the decorative body, making it easier to prevent the decorative body from falling off the post.

[0004] However, providing a large flange-like portion to suppress deformation of the post poses the problem of increased material costs due to the increased amount of precious metal used.

[0005] The present invention was made in consideration of the above circumstances, and its purpose is to provide a post that can prevent the decorative body from falling off due to deformation, and an ornament equipped with such a post. [Means for solving the problem]

[0006] The first aspect of the present invention is a post for a personal ornament that is inserted into a hole opened in the body, and has a columnar post body formed from ceramics and a protrusion that is provided on the post body and protrudes in a direction perpendicular to the longitudinal direction of the post body, with one end of the post body being inserted into the hole opened in the body and the portion from the other end of the post body to the protrusion being attached to the decorative body of the personal ornament. With this structure, the post body is made of ceramic, which is harder than precious metals, so even if a strong force is applied to the post body, it is less likely to deform. For example, if the portion of the post body from the other end to the protruding portion is inserted into a hole in the decorative body and fixed with adhesive, even if a strong force is applied to the post body, there is almost no deformation of the post body near the entrance of the hole in the decorative body, making it easier to maintain adhesion between the decorative body and the post. Therefore, the decorative body is less likely to fall off due to deformation of the post body. Furthermore, with this configuration, the protrusion on the post body limits the portion of the post body that is attached to the ornament (for example, the portion that is inserted into a hole in the ornament) to the portion from the other end of the post body to the protrusion, making it possible to ensure a certain length of the portion of the post body that is inserted into an orifice in the body.

[0007] Preferably, the post body and the protrusion are integrally formed from ceramics. This eliminates the need to assemble the post body and the protrusion, simplifying the manufacturing process.

[0008] Preferably, the protrusion has a first end surface that is perpendicular to the longitudinal direction, surrounds the periphery of the post body, and is a flat surface facing the other end side of the post body. This allows the hole in the decorative body to be blocked by the first end face of the protrusion when the portion from the other end of the post body to the protrusion is inserted into and fixed in the hole in the decorative body.

[0009] Preferably, when viewed from a direction parallel to the longitudinal direction, the outer shape of the post body and the outer shape of the first end face form concentric circles, and the ratio R2 / R1 of the diameter R1 of the outer shape of the post body to the diameter R2 of the outer shape of the first end face is 1.5 to 2.5. This makes it easier to secure a first end face that can close the hole in the decorative body when the portion from the other end of the post body to the protrusion is inserted and fixed into the hole in the decorative body. Also, when force is applied to the edge of the first end face with the other end of the post body fixed, the force acting on the connection between the first end face and the post body does not become excessive and is easily limited to an appropriate range.

[0010] Preferably, the protrusion has a second end face that is perpendicular to the longitudinal direction, surrounds the periphery of the post body, and is a plane facing one end side of the post body, and a side face that is in contact with the first end face and the second end face and surrounds the periphery of the post body. This ensures that the portion from one end of the post body to the second end surface of the protruding portion is the portion to be inserted into the hole opened in the body.

[0011] Preferably, the outer shape of the first end face and the outer shape of the second end face are congruent, and the side surfaces of the protrusions extend parallel to the longitudinal direction. This makes the thickness of the protrusions in the direction parallel to the longitudinal direction uniform, improving the strength of the protrusions.

[0012] Preferably, when viewed in a direction parallel to the longitudinal direction, the outer shape of the first end face and the outer shape of the second end face each form a concentric circle with the outer shape of the post body. This makes it possible to reduce the volume of the protruding portion while ensuring an appropriate distance between the edge of the first end face and the outer surface of the post body.

[0013] Preferably, the protrusion has a circular cross section perpendicular to the longitudinal direction, and includes a tapered portion whose cross-sectional diameter continuously decreases toward the other end of the post body. This improves the strength of the post compared to when there is a discontinuous step at the connection between the other end of the post body and the protrusion, and also reduces the sensation of a foreign body when the protrusion comes into contact with the body compared to when there is such a step.

[0014] Preferably, the post body has a groove between one end and the protrusion, extending in a direction intersecting the longitudinal direction. As a result, when the part of the post body from the other end to the protrusion is inserted into a hole in the decorative body and fixed with adhesive, the adhesive hardens in the groove, improving the adhesive strength between the decorative body and the post.

[0015] Preferably, the protrusion is recessed toward one end of the post body, surrounds the periphery of the post body, and has a first end face that is a curved surface facing the other end of the post body. This makes it easier for the first end face of the protrusion and the surface of the decorative body to come into contact over a wide area when the surface of the decorative body is a spherical curved surface.

[0016] A second aspect of the present invention is an ornament having a post according to the first aspect and an ornament attached to the post. This makes it difficult for the post body to deform, and therefore the decorative body is less likely to fall off due to deformation of the post body. [Effects of the Invention]

[0017] According to the present invention, it is possible to provide a post that can prevent a decorative element from falling off due to deformation, and an ornament equipped with such a post. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a diagram showing an example of an accessory (pierced earring) according to this embodiment. [Figure 2] 2A and 2B are cross-sectional views of the post and the ornament in the accessory shown in FIG. [Figure 3] 3A to 3D are diagrams showing the post of the accessory shown in FIG. [Figure 4] Fig. 4A is a diagram showing a modified example of a post for an ornament according to the present embodiment, and Fig. 4B is a cross-sectional view showing the post shown in Fig. 4A inserted into a jewel. [Figure 5] 5A and 5B are diagrams showing a modified example of a post for an ornament according to this embodiment. [Figure 6] 6A and 6B are cross-sectional views showing a modified example of a post for an ornament according to this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals, and the description of components that have already been described may be omitted as appropriate.

[0020] Fig. 1 is a diagram showing an example of an ornament according to this embodiment. The ornament 1 shown in Fig. 1 is a piercing, and has a post 3 to be inserted into a hole made in the body (such as an earlobe), and an ornament 5 attached to the post 3. The ornament 5 includes a gemstone such as a pearl.

[0021] 2A and 2B are cross-sectional views of the post 3 and the decorative body 5 in the accessory 1 shown in FIG. 1. FIG. 2A shows the state before assembly, and FIG. 2B shows the state after assembly. In the accessory 1 shown in FIG. 1, as shown in FIGS. 2A and 2B, a portion of the post 3 is inserted into a hole 51 provided in the decorative body 5. The decorative body 5 and the post 3 are bonded and fixed inside the hole 51 with an adhesive or the like.

[0022] Figures 3A to 3D are views showing the post 3 of the accessory 1 shown in Figure 1. Figure 3A is a plan view, Figure 3B is a front view, Figure 3C is a bottom view, and Figure 3D is a perspective view.

[0023] The post 3 has a columnar post body 10 and a protrusion 20 provided on the post body 10. The protrusion 20 is a portion that protrudes in a direction perpendicular to the longitudinal direction (hereinafter sometimes simply referred to as the "longitudinal direction") of the post body 10. The post body 10 and the protrusion 20 are each made of ceramics (zirconia, alumina, etc.).

[0024] In one example, the post body 10 and the protrusion 20 of the post 3 are integrally molded, which eliminates the need to assemble the post body and the protrusion, simplifying the manufacturing process.

[0025] One end 15 of the post body 10 is inserted into a hole made in the body (such as the earlobe). The portion of the post body 10 from the other end 11 to the protrusion 20 is attached to the decorative body 5. In the following description, the portion of the post body 10 from one end 15 to the protrusion 20 may be referred to as the "attachment portion 12," and the portion of the post body 10 from the other end 11 to the protrusion 20 may be referred to as the "insertion portion 16."

[0026] 3A to 3D, the thickness of the post body 10 is generally uniform overall, and the cross section perpendicular to the longitudinal direction is generally circular. In this example, the two ends (11, 15) of the post body 10 are rounded in a hemispherical shape.

[0027] Two grooves 17A and 17B are provided on the insertion portion 16 of the post body 10 from the center toward the end portion 15. The grooves 17A and 17B (hereinafter, sometimes referred to as "grooves 17" without distinction) extend circumferentially (perpendicular to the longitudinal direction) on the peripheral surface of the post body 10. Both ends of the groove 17 are connected to form a ring. The groove 17 is used to attach a piercing back (not shown) to the post body 10. The distance between the protruding portion 20 and the piercing back is determined by fitting the piercing back into the groove 17. The distance between the protruding portion 20 and the piercing back can be adjusted by selecting the groove 17 to fit the piercing back into. This allows the distance between the protruding portion 20 and the piercing back to be set appropriately depending on the thickness of the body part (such as an earlobe) into which the insertion portion 16 is inserted. The number of grooves 17 is not limited to two; it may be one, three, or more.

[0028] The protrusion 20 has a first end face 21, which is a plane perpendicular to the longitudinal direction. The first end face 21 surrounds the periphery of the post body 10 and faces the end portion 11. The first end face 21 intersects with the peripheral surface of the post body 10 perpendicularly. By providing the protrusion 20 on the post body 10, it is possible to close the hole 51 in the decorative body 5 with the first end surface 21 of the protrusion 20, as shown in Figure 2B. Furthermore, since the first end surface 21 abuts against the entrance of the hole 51 in the decorative body 5, the length of the portion (attachment part 12) that is inserted into the hole 51 in the decorative body 5 is determined, so the hole 51 only needs to be deeper than this length. This relaxes the machining precision required when forming the hole 51 in the decorative body 5, making the machining work easier.

[0029] As shown in the plan view of FIG. 3A, the outer shape of the post body 10 and the outer shape of the first end face 21 form roughly concentric circles when viewed in a direction parallel to the longitudinal direction.

[0030] If the outer diameter of the post body 10 is "R1" and the outer diameter of the first end face 21 is "R2" (FIGS. 3A and 3C), the ratio of the two diameters, R2 / R1, is preferably 1.5 to 2.5. By setting the ratio R2 / R1 to 1.5 or more, it becomes easier to ensure that the first end surface 21 is capable of closing the hole 51 of the decorative body 5 in the assembled state (FIG. 3B). Furthermore, by having the ratio R2 / R1 be 2.5 or less, it becomes easier to prevent excessive force from acting on the connection portion 120 between the first end face 21 and the post body 10. In other words, even if force is applied to the edge 210 of the first end face 21 with the end portion 11 of the post body 10 fixed, the force acting on the connection portion 120 will not become excessive and will be easily limited to an appropriate range.

[0031] 3B to 3D, the protrusion 20 has a second end face 22, which is a plane perpendicular to the longitudinal direction, and a side face 23 that surrounds the periphery of the post body 10. The second end face 22 surrounds the periphery of the post body 10 and faces the end 15. The second end face 22 intersects perpendicularly with the circumferential surface of the post body 10. The side face 23 is in contact with the first end face 21 and the second end face 22. By providing the second end face 22 on the protrusion 20, the portion from the end 15 of the post body 10 to the second end face 22 of the protrusion 20 is secured as the portion (insertion portion 16) to be inserted into a hole opened in the body.

[0032] 3A to 3D, the outer shape of the first end face 21 and the outer shape of the second end face 22 are congruent. The side faces 23 of the protrusion 20 extend parallel to the longitudinal direction. Because the side faces 23 extend parallel to the longitudinal direction, the thickness of the protrusion 20 in the direction parallel to the longitudinal direction becomes uniform, improving the strength of the protrusion.

[0033] In the example of FIGS. 3A to 3D, the outer shape of the first end face 21 and the outer shape of the second end face 22 when viewed in a direction parallel to the longitudinal direction each form a circle concentric with the outer shape of the post body 10. By having such a shape for the protrusion 20, the volume of the protrusion 20 can be minimized while maintaining the necessary distance (sufficient distance to block the entrance of the hole 51 in the decorative body 5) between the edge 210 of the first end face 21 and the outer surface (connection portion 120) of the post body 10.

[0034] In the post 3 according to this embodiment, the diameter R1 of the post body 10 is, for example, 0.80 mm, and is typically within the range of 0.70 to 1.00 mm. The diameter R2 of the protrusion 20 is, for example, 1.50 mm, and typically falls within the range of 1.00 to 2.00 mm. The width of the protrusion 20 in the longitudinal direction is, for example, 0.50 mm, and typically falls within the range of 0.30 to 0.70 mm. The length of the attachment portion 12 of the post body 10 in the longitudinal direction is, for example, 3.00 mm, and preferably falls within the range of 2.00 to 6.00 mm. The length of the insertion portion 16 of the post body 10 is, for example, 10.00 mm, and is typically within the range of 8.00 to 12.00 mm.

[0035] According to the present embodiment described above, the post body 10 is formed from ceramics, which is harder than precious metals, and therefore, even when a strong force is applied to the post body 10, the post body 10 hardly deforms. For example, when the portion of the post body 10 from the end 11 to the protrusion 20 (attachment portion 12) is inserted into a hole 51 in the decorative body 5 and fixed with an adhesive, even when a strong force is applied to the post body 10, there is almost no deformation of the post body 10 near the entrance of the hole 51 in the decorative body 5, and therefore the adhesion between the decorative body 5 and the post 3 is easily maintained. Therefore, the decorative body 5 is less likely to fall off due to deformation of the post body 10.

[0036] Furthermore, according to the present embodiment described above, the protrusion 20 is provided on the post body 10, so the portion of the post body 10 that is attached to the decorative body 5 (attachment portion 12) is limited to the portion from the end 11 of the post body 10 to the protrusion 20. This ensures that the portion of the post body 10 that is inserted into an orifice in the body (insertion portion 16) has a certain length.

[0037] Furthermore, according to the present embodiment described above, the post 3 is made of ceramic, so that even users with metal allergies can use it safely.

[0038] Next, a modification of this embodiment will be described.

[0039] (Variation 1) Fig. 4A is a diagram showing a modified example of a post for an ornament according to this embodiment, and Fig. 4B is a cross-sectional view showing the post shown in Fig. 4A inserted into a jewelry body 5.

[0040] The modified post 3A shown in Figure 4A has a groove 13 formed between the end 11 and the protrusion 20 (attachment portion 12) of the post body 10. The groove 13 extends in a direction intersecting the longitudinal direction (perpendicular to the longitudinal direction in the example of Figure 4A), and both ends of the groove 13 are connected in a ring shape. When the attachment portion 12 is inserted into the hole 51 of the decorative body 5, a stepped gap is created between the attachment portion 12 and the decorative body 5, as shown in Figure 4B. When adhesive is introduced into the hole 51 to adhere the attachment portion 12 to the decorative body 5, the adhesive solidifies within the groove 13. As a result, even if the post body 10 is pulled longitudinally, the solidified adhesive engages with the groove 13, restricting longitudinal movement of the post body 10. This improves the adhesive strength between the decorative body 5 and the post 3A.

[0041] The number of grooves 13 provided in the attachment portion 12 is not limited to one, but may be two or more. By increasing the number of grooves 13, the adhesive strength between the decorative body 5 and the post 3A can be further improved.

[0042] (Variation 2) 5A and 5B are diagrams showing modified examples of posts 3B and 3C for jewelry according to this embodiment. The post 3B shown in FIG. 5A is a modified example of the post 3 shown in FIGS. 3A to 3D, and the post 3C shown in FIG. 5B is a modified example of the post 3 shown in FIG. 4A. In the posts 3B and 3C shown in FIGS. 5A and 5B, the protruding portion 20 has a reduced diameter portion 24 instead of the second end surface 22. The reduced diameter portion 24 has a circular cross section perpendicular to the longitudinal direction, and the diameter of the cross section continuously decreases toward the end 15 of the post body 10.

[0043] By providing the reduced diameter portion 24 in the protrusion 20 instead of the second end face 22, a discontinuous step is eliminated at the connection portion 160 (FIG. 3B) between the insertion portion 16 of the post body 10 and the protrusion 20. As a result, stress concentration at the discontinuous step is avoided, improving the strength of the post 3. Furthermore, compared to when such a discontinuous step is present, the foreign body sensation when the body comes into contact with the protrusion 20 can be reduced.

[0044] (Variation 3) 6A and 6B are cross-sectional views showing modified examples of a post for an ornament according to this embodiment. A post 3D shown in FIG. 6A and a post 3E shown in FIG. 6B are modified examples of the post 3 shown in FIGS. 3A to 3D. In the post 3 shown in FIGS. 3A to 3D, the first end face 21 of the protruding portion 20 is a plane perpendicular to the longitudinal direction, but in the modified posts 3D and 3E shown in FIGS. 6A and 6B, the first end face 21A of the protruding portion 20 is a curved surface. That is, the first end face 21A is recessed toward the end 11 of the post body 10, surrounds the periphery of the post body 10, and is a curved surface facing the end 15 of the post body 10.

[0045] Because the first end surface 21A is a curved surface as described above, when the surface of the decorative body 5 is a spherical curved surface, the first end surface 21A and the surface of the decorative body 5 can easily abut over a wide area. Therefore, the force applied to the protrusion 20 is easily distributed to the first end surface 21A, and stress concentration at the connection portion 120A between the first end surface 21A and the post body 10 can be alleviated. In this case, by bonding the first end surface 21A and the surface of the decorative body 5 with an adhesive, the decorative body 5 can be firmly fixed to the posts 3D and 3E.

[0046] 6B, the second end face 22A of the post body 10 facing the end 15 is a curved surface that protrudes toward the end 15. This increases the longitudinal thickness of the protruding portion 20 compared to the post 3D shown in FIG. 6A, thereby improving the strength of the protruding portion 20.

[0047] Note that this embodiment is not limited to the above-described examples, and further includes various modified examples. For example, the post 3 (post body 10, protrusion 20) may have a core made of a material harder than precious metal, and the periphery of the core covered with ceramics. Furthermore, the combination of the configurations of the modified examples is not limited to the above-described examples, and other combinations are also possible. [Explanation of symbols]

[0048] 1... jewelry, 3... post, 10... post body, 11... end, 12... mounting portion, 120, 120A... connection portion, 13... groove, 15... end, 16... insertion portion, 160... connection portion, 17A, 17B... groove, 20... protrusion, 21... first end surface, 210... edge, 22... second end surface, 23... side, 24... reduced diameter portion, 5... decorative body, 51... hole

Claims

1. A post for jewelry to be inserted into a hole in the body, a pillar-shaped post body formed of ceramics; a protrusion provided on the post body and protruding in a direction perpendicular to the longitudinal direction of the post body; One end of the post body is inserted into a hole drilled in the body, The portion from the other end of the post body to the protrusion is attached to the ornament of the accessory. post.

2. The post body and the protrusion are integrally formed from ceramics. The post of claim 1 .

3. The protrusion is perpendicular to the longitudinal direction, surrounds the periphery of the post body, and has a first end surface that is a flat surface facing the other end of the post body. The post of claim 1 .

4. When viewed in a direction parallel to the longitudinal direction, the outer shape of the post body and the outer shape of the first end face form concentric circles, a ratio R2 / R1 of an outer diameter R1 of the post body to an outer diameter R2 of the first end surface is 1.5 to 2.5; The post of claim 3.

5. The protrusion is a second end surface that is a plane perpendicular to the longitudinal direction, surrounds the post body, and faces the one end of the post body; a side surface that is in contact with the first end surface and the second end surface and surrounds the periphery of the post body; The post of claim 3.

6. the outer shape of the first end surface and the outer shape of the second end surface are congruent, The side surfaces of the protrusions extend parallel to the longitudinal direction. The post of claim 5.

7. When viewed from a direction parallel to the longitudinal direction, the outer shape of the first end surface and the outer shape of the second end surface each form a concentric circle with the outer shape of the post body. The post of claim 6.

8. The protrusion has a circular cross section perpendicular to the longitudinal direction, and includes a tapered portion whose cross-sectional diameter continuously decreases toward the other end of the post body. The post of claim 3.

9. a groove provided between the one end of the post body and the protruding portion and extending in a direction intersecting the longitudinal direction; The post of claim 1 .

10. The protrusion is recessed toward the one end of the post body, surrounds the periphery of the post body, and has a first end surface that is a curved surface facing the other end of the post body. The post of claim 2.

11. A post according to any one of claims 1 to 10; a decorative body attached to the post; Accessories.

Images