Post for accessory, accessory, manufacturing method of post and manufacturing method of accessory

Abstract

To provide a post for accessories that can be fixed to a surface of a decorative body even when a part to be inserted into a hole opened in a body is formed of any material, manufacturing method of the post, accessory including the post, and manufacturing method of the accessory.SOLUTION: An accessory includes a post 3 to be inserted into a hole opened in the body and a decorative body to be attached to the post 3. The post 3 has a columnar post body 10, a head part 20 provided at one end of the post body 10, and a cap part 30 attached to the head part 20 and covering at least a part of the head part 20. The cap part 30 is formed of a material that can be joined to a surface of the decorative body of the accessory.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a post used in an ornament, the ornament, a method for manufacturing a post, and a method for manufacturing an 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.

[0003] The following Japanese Patent Application Laid-Open Publication No. 9-327309 describes a pierced earring in which an ornament is attached to the tip of a post via a holder. In this pierced earring, the tip of the post is provided with an insertion hole extending in the axial direction, and the holder is provided with an insertion part that can be inserted into the insertion hole at the tip of the post. The insertion part of the holder is fixed by press-fitting into the insertion hole of the post. In this pierced earring, because the holder is fixed to the post by press-fitting, the holder and post can be firmly fixed together even if the post is made of a material that is difficult to braze (titanium, ceramics, etc.). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-327309 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the earrings described in the above patent documents require that the holder for the ornamental object be provided with a press-fit insertion portion beforehand. In other words, the press-fit insertion portion must be integrally formed with the holder to ensure adequate strength, and it is not possible to simply retrofit an insertion portion to an existing holder. Therefore, existing holders without an insertion portion cannot be used with the earrings described in the above patent documents. Therefore, a new dedicated holder with a special insertion portion not found in existing holders must be manufactured, which has the disadvantage of increasing manufacturing costs.

[0006] The present invention was made in consideration of the above circumstances, and its object is to provide a post for an ornament that can be fixed to the surface of an ornament, even if the part inserted into a hole in the body is made of any material, and a method for manufacturing the same. Another object of the present invention is to provide an ornament equipped with such a post, and a method for manufacturing the same. [Means for solving the problem]

[0007] The first aspect of the present invention is a post for a piece of jewelry to be inserted into a hole in the body, the post having a columnar post body, a head provided at one end of the post body, and a cap portion attached to the head and covering at least a portion of the head, the cap portion being formed from a material that can be bonded to the surface of the decorative body of the jewelry. This post has a cap attached to a head at one end of the post body, and this cap can be joined to the surface of the decorative body of the accessory by brazing or other methods. This allows the post to be fixed to the surface of the decorative body, even if the post body is made of any material (for example, metals or ceramics that are difficult to join by brazing). Therefore, it is possible to create an accessory using an existing decorative body that does not have a special structure (such as a special insertion part).

[0008] Preferably, the head portion has a width perpendicular to the longitudinal direction of the post body that is greater than that of the post body, and the cap portion has a through hole through which the post body passes, the diameter of the through hole being smaller than the width of the head portion in the direction perpendicular to the longitudinal direction. This prevents the head provided at one end of the post body from passing through the through hole in the cap portion, preventing the post body from slipping out of the through hole.

[0009] Preferably, the cap portion has an internal space communicating with the through-hole, and the head portion is enclosed within the internal space of the cap portion. This keeps the head confined within the internal space of the cap, preventing the cap from coming off the post body.

[0010] Preferably, a gap is formed between the head and the inner surface of the cap portion facing the internal space, allowing movement of the head. This allows the head to move within the internal space of the cap, making it possible to change the position and posture of the post body relative to the decorative body while the decorative body and cap body are joined together.

[0011] Preferably, the other end of the post body is inserted into a hole drilled in the body, and the head has an end surface that protrudes spherically from the other end of the post body toward the one end, and the end surface of the head is slidable against the inner surface of the cap portion. This allows the end face of the head to slide against the inner surface of the cap, making it possible to change the position and posture of the post body relative to the decorative body while the decorative body and the cap are joined. Also, because the end face of the head rises spherically in the direction from the other end of the post body to one end, sliding the end face of the head against the inner surface of the cap makes it easy to change the longitudinal inclination of the post body relative to the penetration direction of the through-hole.

[0012] Preferably, the cap portion includes a bottom portion having a through hole formed therein and a plurality of extension pieces extending from the side ends of the bottom portion, and the head portion is enclosed in an internal space surrounded by the bottom portion and the plurality of extension pieces. This keeps the head confined within the internal space of the cap, preventing the cap from coming off the post body.

[0013] Preferably, the other end of the post body is inserted into a hole drilled in the body, and the head has an end surface that protrudes spherically in the direction from the other end of the post body toward the one end, and the end surface of the head is slidable against the inner surface of at least a portion of the extension piece. This allows the end face of the head to slide against the inner surface of at least a portion of the extension piece, making it possible to change the position and posture of the post body relative to the ornamental body while the ornamental body and the cap part are joined. Also, because the end face of the head is spherically raised in the direction from the other end of the post body to one end, sliding the end face of the head against the inner surface of the extension piece makes it easy to change the longitudinal inclination of the post body relative to the penetration direction of the through-hole.

[0014] Preferably, the head portion is made of a material that prevents adhesion when joining the cap portion and the surface of the decorative body. This prevents the head from adhering to the inner surface of the cap or the decorative body when joining the cap and the decorative body, and prevents the joining material (wax, adhesive, etc.) from adhering to the head, making it easier to maintain a state in which the head can move freely within the internal space of the cap.

[0015] Preferably, the post body and the head are integrally formed from ceramics. This simplifies the manufacturing process by eliminating the need to assemble the post body and head. Also, because the head and post body are made of highly heat-resistant ceramics, deformation of the head and post body due to heat can be prevented even when high heat is applied when joining the decorative body and cap.

[0016] A second aspect of the present invention is an ornament having a post according to the first aspect and a decorative body joined to the cap portion of the post. This allows a post having a post body made of any material to be fixed to the surface of the decorative body via the cap, making it possible to create jewelry using existing decorative bodies that do not have a special structure.

[0017] A third aspect of the present invention is a method for manufacturing a post for an ornament to be inserted into a hole in the body, the post having a columnar post body, a head provided at one end of the post body and having a width perpendicular to the longitudinal direction of the post body that is greater than that of the post body, and a cap portion attached to the head and covering at least a portion of the head, the cap portion being formed from a material that can be bonded to the surface of the decorative body of the ornament, the cap portion including a bottom portion having a through hole through which the post body passes and a plurality of extension pieces extending from the side ends of the bottom portion, the diameter of the through hole being smaller than the width of the head in the direction perpendicular to the longitudinal direction, the method for manufacturing a post having the steps of: preparing a post body provided with a head; preparing a cap portion formed by press working, the cap portion having an exposed bottom portion when viewed from a direction parallel to the penetration direction of the through hole; inserting the post body into the through hole in the bottom of the cap portion; and bending the plurality of extension pieces so that the head is confined in an internal space surrounded by the bottom portion and the plurality of extension pieces. This makes it possible to fix the post to the surface of the decorative body even if the post body is made of any material, and therefore makes it possible to create jewelry using existing decorative bodies that do not have a special structure.

[0018] A fourth aspect of the present invention is a method for manufacturing an ornament, which includes a step of joining a cap portion of a post for the ornament, which is manufactured by the method according to the third aspect, to the surface of an ornament. This allows a post having a post body made of any material to be fixed to the surface of the decorative body via the cap, making it possible to create jewelry using existing decorative bodies that do not have a special structure. [Effects of the Invention]

[0019] According to the present invention, it is possible to provide a post for an ornament that can be fixed to the surface of an ornament, even if the part inserted into a hole in the body is made of any material, and a manufacturing method thereof. Furthermore, according to the present invention, it is possible to provide an ornament equipped with such a post and a manufacturing method thereof. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a diagram showing an example of an accessory (pierced earring) according to this embodiment. [Figure 2] 2A to 2C are diagrams showing an example of a post body, and FIGS. 2D to 2F are diagrams showing an example of a post. [Figure 3] 3A and 3B are diagrams showing an example of a main part of a post, and FIG. 3C is a cross-sectional view showing an example of a cap part. [Figure 4] 4A and 4B are diagrams for explaining an example of changing the position and attitude of the post body relative to the cap portion. [Figure 5] 5A to 5C are diagrams showing an example of a cap part with its bottom exposed. [Figure 6] 6A to 6C are diagrams for explaining the manufacturing process of the post. DETAILED DESCRIPTION OF THE INVENTION

[0021] 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.

[0022] Fig. 1 is a diagram showing an example of an accessory according to the present embodiment. The accessory 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 to be attached to the post 3.

[0023] In the example of Figure 1, the jewelry body 5 has multiple jewels 51, 52 and a jewel support member 53 made of precious metal. The multiple jewels 51, 52 are fixed to the front side of the jewel support member 53. A cap portion 30 (described below) of the post 3 is joined to the surface on the back side of the jewel support member 53. The cap portion 30 of the post 3 and the jewel support member 53 are joined via a joint portion 4, for example, by brazing.

[0024] The post 3 has a post body 10, a head 20 provided at one end of the post body 10, and a cap portion 30 attached to the head 20. The other end (end portion 15) of the post body 10 is inserted into a hole opened in the body.

[0025] 2A to 2C are diagrams showing an example of a post body 10 provided with a head portion 20. Fig. 2A is a plan view, Fig. 2B is a front view, and Fig. 2C is a bottom view. 2D to 2F are diagrams showing an example of a post 3 to which a cap portion 30 is attached. Fig. 2D is a plan view, Fig. 2E is a front view, and Fig. 2F is a bottom view. 3A and 3B are diagrams showing an example of a main part of the post 3. Fig. 3A is a cross-sectional view taken along line AA (Fig. 2D), and Fig. 3B is a perspective view. FIG. 3C is a cross-sectional view showing an example of the cap portion 30. As shown in FIG.

[0026] The post body 10 of the post 3 has a columnar shape as shown in Fig. 2B. The cross-sectional shape perpendicular to the longitudinal direction of the post body 10 (hereinafter sometimes simply referred to as the "longitudinal direction") is generally circular as shown in Fig. 2C.

[0027] As shown in Figure 2B, a head portion 20 is provided at the end opposite to the longitudinal end portion 15 of the post body 10. The width W2 of the head portion 20 in the direction perpendicular to the longitudinal direction is greater than the width W1 of the post body 10 in the same direction, as shown in Figure 2B.

[0028] 2A to 2C, the head 20 has an end surface 21 and a back surface 22. The end surface 21 is a curved surface that rises spherically in the direction from the end 15 of the post body 10 toward the head 20. The back surface 22 is a flat surface perpendicular to the longitudinal direction and faces the end 15 side.

[0029] When viewed in a direction parallel to the longitudinal direction, the outer shape of the head 20 (the outer shapes of the end face 21 and back face 22) is roughly circular. When viewed in a direction parallel to the longitudinal direction, the outer shape of the head 20 and the outer shape of the post body 10 form roughly concentric circles.

[0030] Two grooves 17A and 17B are provided on the post body 10 from the center toward the end 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 the stopper 6 (FIG. 4B) to the post body 10. The distance between the cap portion 30 and the stopper 6 is determined by fitting the stopper 6 into the groove 17. The distance between the cap portion 30 and the stopper 6 can be adjusted by selecting the groove 17 into which the stopper 6 is fitted. This allows the appropriate distance between the cap portion 30 and the stopper 6 to be set depending on the thickness of the body part into which the post body 10 is inserted (the earlobe 9 in the example of FIG. 4B). The number of grooves 17 is not limited to two; it may be one, three, or more.

[0031] The post body 10 may be formed from any material, for example, a precious metal (gold, silver, platinum, etc.) commonly used as a material for jewelry, or a material that is less likely to cause allergies (titanium, ceramics, etc.).

[0032] The post body 10 and the head 20 may be integrally formed from the same material (ceramics, etc.). By integrally forming the post body 10 and the head 20, assembly of the post body 10 and the head 20 becomes unnecessary, simplifying the manufacturing process.

[0033] Furthermore, since the post body 10 and head 20 are formed from highly heat-resistant materials such as ceramics, even if high heat is applied when joining the decorative body 5 and the cap part 30, the head 20 and post body 10 can be prevented from deforming due to the effects of heat.

[0034] The cap portion 30 is formed from a material that can be bonded to the surface of the decorative body 5. For example, if the decorative body 5 is formed from a material that can be brazed or laser welded (such as a precious metal), the cap portion 30 is also formed from a material that can be brazed or laser welded. Also, if the decorative body 5 is formed from a material that can be bonded with a specific adhesive, the cap portion 30 is also formed from a material that can be bonded with this adhesive. This allows a post 3 whose post body 10 is formed from any material to be fixed to the surface of the decorative body 5.

[0035] 2D to 2F and 3A to 3B, the cap portion 30 attached to the head 20 of the post body 10 covers almost the entire head 20. The cap portion 30 has a through hole 32 through which the post body 10 passes. The diameter W3 (FIG. 3C) of the through hole 32 is smaller than the width W2 of the head 20 in a direction perpendicular to the longitudinal direction. As a result, when the post body 10 is inserted into the through hole 32, the head 20 cannot pass through the through hole 32, and therefore the post body 10 cannot come out of the through hole 32.

[0036] As shown in Fig. 3C, the cap portion 30 has an internal space 35 that communicates with the through-hole 32. As shown in Fig. 3A, the head portion 20 is confined in this internal space 35 of the cap portion 30. Because the head portion 20 is confined in the internal space 35, the cap portion 30 cannot be removed from the post body 10.

[0037] As shown in Figure 3A, a gap 37 is formed between the head 20 and the inner surface of the cap part 30 facing the internal space 35, allowing movement of the head 20 within the internal space 35. This allows movement of the head 20 within the internal space 35 of the cap part 30, making it possible to change the position and posture of the post body 10 relative to the decorative body 5 while the decorative body 5 and the cap part 30 are joined together.

[0038] 4A and 4B are diagrams illustrating an example of changing the position and posture of the post body 10 relative to the cap part 30. Fig. 4A is a cross-sectional view taken along line AA showing the main part of the post 3, and Fig. 4B is a diagram showing the state in which the post 3 of the ornament 1 has been inserted into a hole made in the earlobe 9.

[0039] Because the head 20 can move within the internal space 35 of the cap 30, the tilt of the longitudinal direction of the head 20 relative to the direction of the through-hole 32 can be changed, as shown in Figure 4A, for example. This makes it possible to change the posture of the post body 10 relative to the ornamental body 5. Therefore, even if the direction of the hole drilled in the earlobe 9 is tilted up and down or left and right, it is possible to adjust the orientation of the ornamental body 5 so that the front of the ornamental body 5 faces in a direction that looks best, as shown in Figure 4B.

[0040] As shown in Figure 4A, the spherically raised end surface 21 of the head 20 is slidable against the inner surface of the cap portion 30. This allows the head 20 to be moved within the internal space 35 while the end surface 21 of the head 20 is sliding against the inner surface of the cap portion 30. Therefore, with the decorative body 5 and the cap portion 30 joined together, the position and posture of the post body 10 relative to the decorative body 5 can be changed by sliding the head 20 against the inner surface of the cap portion 30.

[0041] Furthermore, the end face 21 of the head 20 protrudes spherically from the end 15 of the post body 10 toward the head 20, and the further away from its center (the center of the end face 21 when viewed parallel to the longitudinal direction), the more it recedes toward the end 15 in the longitudinal direction. Therefore, when the end face 21 of the head 20 is slid against the inner surface of the cap portion 30, the inclination of the longitudinal direction of the post body 10 relative to the penetration direction of the through hole 32 is easily changed, as shown in FIG. 4A . That is, when the inclination of the longitudinal direction of the post body 10 relative to the penetration direction of the through hole 32 is increased, the areas of the end face 21 farther from the center approach the inner surface of the cap portion 30, while the areas of the end face 21 farther from the center recede toward the end 15 in the longitudinal direction, making it more difficult for the end face 21 to reach the inner surface of the cap portion 30, and thus the inclination of the post body 10 is easily changed significantly.

[0042] In one example, the cap portion 30 is fabricated by pressing (punching, bending, etc.) a plate member made of a predetermined material (such as metal). The cap portion 30 fabricated by pressing includes a bottom portion 31 having a through-hole 32 formed therein and multiple (four in the illustrated example) extension pieces 33 extending from the side edges of the bottom portion 31, as shown in FIGS. 3A to 3C . The bottom portion 31 is generally circular when viewed in a direction parallel to the longitudinal direction, and multiple extension pieces 33 extend from its circumference. Each extension piece 33 has a curved, leaf-like shape, and the multiple extension pieces 33 are in a point-symmetric relationship with respect to the center of the circular bottom portion 31. The side edges of adjacent extension pieces 33 are in contact with each other, giving the cap portion 30 an overall hemispherical dome-like shape. A hole 38 surrounded by the end portions of the leaf-shaped extension pieces 33 is formed at the apex of the dome shape of the cap portion 30.

[0043] 3A and other figures, the head 20 is confined in an internal space 35 surrounded by the bottom 31 of the cap 30 and the multiple extension pieces 33. This prevents the cap 30 from coming off the post body 10.

[0044] In the internal space 35 of the cap portion 30, the end surface 21 of the head portion 20 is slidable against the inner surface 36a of the extension piece 33, and the back surface 22 of the head portion 20 is slidable against the inner surface 36b of the bottom portion 31. This allows the head portion 20 to be moved within the internal space 35 while the end surface 21 and back surface 22 of the head portion 20 slide against the inner surfaces (36a, 36b) of the cap portion 30. Therefore, as shown in FIG. 4A, it is possible to change the position and posture of the post body 10 relative to the decorative body 5. Furthermore, because the spherically raised end surface 21 of the head portion 20 is slidable against the inner surface 36a of the extension piece 33, it is easy to change the longitudinal inclination of the post body 10 relative to the penetration direction of the through-hole 32, as shown in FIG. 4A.

[0045] In the post 3 according to this embodiment, the length of the post body 10 in the longitudinal direction is, for example, 10.00 mm, and is typically within the range of 8.00 to 12.00 mm. The width W1 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 width W2 of the head portion 20 is, for example, 1.60 mm, and typically falls within the range of 1.30 to 1.90 mm. The height of the head 20 in the longitudinal direction is, for example, 0.50 mm, and typically falls within the range of 0.40 to 0.70 mm. The diameter W3 of the through-hole 32 of the cap portion 30 is, for example, 0.90 mm, and typically falls within the range of 0.80 to 1.10 mm. The width W4 of the cap portion 30 is, for example, 2.05 mm, and is typically within the range of 1.75 to 2.35 mm. The height of the cap portion 30 in the longitudinal direction is, for example, 0.90 mm, and typically falls within the range of 0.80 to 1.10 mm.

[0046] Next, a method for manufacturing the post 3 and the accessory 1 having the above-described structure will be described.

[0047] In the method for manufacturing the post 3 according to this embodiment, first, a post body 10 provided with a head 20 is prepared. That is, a post body 10 as shown in Figures 2A to 2C is prepared.

[0048] Furthermore, in the manufacturing method of the post 3 according to this embodiment, a cap portion 30 is prepared, which is formed by press processing and has an exposed bottom portion 31 when viewed from a direction parallel to the penetration direction of the through hole 32.

[0049] 5A to 5C are diagrams showing an example of the cap portion 30 in a state where the bottom portion 31 is exposed. Fig. 5A is a front view, Fig. 5B is a perspective view, and Fig. 5C is a plan view. In the cap portion 30 shown in Figs. 5A to 5C, the multiple extension pieces 33 are all bent in the same direction, but all extend generally parallel to the penetration direction of the through-hole 32, so that the bottom portion 31 is exposed when viewed from a direction parallel to this penetration direction.

[0050] Next, in the manufacturing method of the post 3 according to this embodiment, the post body 10 is inserted into the through-hole 32 of the cap portion 30 with the bottom portion 31 exposed. Fig. 6A is a cross-sectional view showing the cap portion 30 with the bottom portion 31 exposed. When the post body 10 is inserted into the through-hole 32 of the cap portion 30, the back surface 22 of the head portion 20 comes into contact with the bottom portion 31, as shown in the cross-sectional view of Fig. 6B.

[0051] Once the post body 10 is inserted into the through-hole 32, in the manufacturing method of the post 3 according to this embodiment, the multiple extension pieces 33 are bent so that the head 20 is confined within the internal space 35 surrounded by the bottom 31 and the multiple extension pieces 33. That is, the multiple extension pieces 33 (FIG. 6B) extending parallel to the direction of penetration of the through-hole 32 are each bent so as to fall toward the head 20. As a result, as shown in the cross-sectional view of FIG. 6C, the head 20 is surrounded by the bottom 31 and the multiple extension pieces 33 and is confined therein.

[0052] The post 3 produced by the above-described manufacturing method is used to manufacture the ornament 1. In the manufacturing method of the ornament 1 according to this embodiment, the cap portion 30 of the manufactured post 3 is joined to the surface of the ornament 5. The method for joining the cap portion 30 and the ornament 5 is selected from methods suitable for the respective materials (brazing, laser welding, adhesive, etc.).

[0053] As explained above, according to this embodiment, the cap portion 30 is attached to the head portion 20 provided at one end of the post body 10, and this cap portion 30 is formed from a material that can be bonded to the surface of the decorative body 5. Even if the post body to be inserted into a hole made in the body is made from any material, by selecting an appropriate bonding method, the cap portion 30 can be bonded to the surface of the decorative body 5, and the post 3 can be fixed to the surface of the decorative body 5. Therefore, it is possible to create an ornament 1 using an existing decorative body that does not have a special structure (such as a special insertion portion).

[0054] Furthermore, according to this embodiment, the head 20 can move within the internal space 35 of the cap part 30, so it is possible to change the position and posture of the post body 10 relative to the ornamental body 5 while the ornamental body 5 and the cap part 30 are joined together. This makes it possible to adjust the orientation of the ornamental body 5 so that the front of the ornamental body 5 faces in a direction that looks best, even if the penetration direction of the hole drilled in the body (earlobe, etc.) is tilted up / down or left / right.

[0055] It should be noted that this embodiment is not limited to the above-described example, but includes various variations.

[0056] For example, the head 20 may be made of a material that has properties that prevent adhesion when a predetermined joining method is used to join the cap 30 and the surface of the decorative body 5. Specifically, when joining the cap 30 and the surface of the decorative body 5 by brazing, the head 20 may be made of a material such as ceramics that prevents adhesion by brazing. This prevents the head 20 from adhering to the inner surface of the cap 30 or the decorative body 5, or prevents the adhering material (wax, adhesive, etc.) from adhering to the surface of the head 20, when the cap 30 and the surface of the decorative body 5 are joined together. This allows the head 20 to remain movable within the internal space 35 of the cap 30.

[0057] In the above-described embodiment, an example is given in which the cap portion 30 is produced by press processing, but this embodiment is not limited to this example, and the cap portion 30 may be produced by other methods (such as die casting). [Explanation of symbols]

[0058] 1... jewelry, 3... post, 10... post body, 15... end, 17a, 17b... groove, 20... head, 21... end face, 22... back face, 30... cap portion, 31... bottom, 32... through hole, 33... extension portion, 35... internal space, 36a, 36b... inner surface, 37... gap, 38... hole, 4... joint portion, 5... decorative body, 51, 52... gemstone, 53... gemstone support member, 6... stopper, 9... earlobe

Claims

1. A post for jewelry to be inserted into a hole in the body, A pillar-shaped post body, a head provided at one end of the post body; a cap portion attached to the head portion and covering at least a portion of the head portion; The cap portion is formed of a material that can be bonded to the surface of the ornament of the accessory. post.

2. The head portion has a width in a direction perpendicular to the longitudinal direction of the post body that is larger than that of the post body, the cap portion has a through hole through which the post body passes, The diameter of the through hole is smaller than the width of the head in a direction perpendicular to the longitudinal direction. The post of claim 1 .

3. the cap portion has an internal space communicating with the through hole, The head is confined within the internal space of the cap portion. The post of claim 2.

4. A gap is formed between the head and an inner surface of the cap portion facing the internal space, allowing the head to move. The post of claim 3.

5. The other end of the post body is inserted into a hole drilled in the body, The head has an end surface that is spherically raised in a direction from the other end toward the one end of the post body, The end surface of the head is slidable relative to the inner surface of the cap portion. The post of claim 3.

6. The cap portion is a bottom portion in which the through hole is formed; a plurality of extension pieces extending from side edges of the bottom portion; The head portion is enclosed in the internal space surrounded by the bottom portion and the plurality of extension pieces. The post of claim 3.

7. The other end of the post body is inserted into a hole drilled in the body, The head has an end surface that is spherically raised in a direction from the other end toward the one end of the post body, The end surface of the head is slidable against the inner surface of at least a part of the extension piece. The post of claim 6.

8. The head is formed of a material that prevents adhesion when joining the cap part and the surface of the decorative body. A post according to any one of claims 4, 5 and 7.

9. A post according to any one of claims 1 to 7; the decorative body joined to the cap portion of the post; Accessories.

10. A method for manufacturing a post for an ornament to be inserted into a hole made in the body, comprising: The post is A pillar-shaped post body, a head portion provided at one end of the post body, the head portion having a width perpendicular to the longitudinal direction of the post body that is larger than that of the post body; a cap portion attached to the head portion and covering at least a portion of the head portion; The cap portion is formed of a material that can be bonded to a surface of the ornament of the accessory, The cap portion is a bottom portion having a through hole formed therein through which the post body passes; a plurality of extension pieces extending from side edges of the bottom portion; The diameter of the through hole is smaller than the width of the head in a direction perpendicular to the longitudinal direction, providing the post body having the head; preparing the cap portion formed by press working, the cap portion having the bottom exposed when viewed in a direction parallel to the penetration direction of the through hole; inserting the post body into the through hole in the bottom of the cap portion; bending the plurality of extension pieces so that the head portion is confined within an internal space surrounded by the base portion and the plurality of extension pieces; Method for manufacturing a post having the above structure

11. a step of joining the cap portion of the post for jewelry made by the method of claim 10 to the surface of the ornament. A method for manufacturing jewelry.

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