JP7527635B2 - Manufacturing method of ornament and manufacturing method of frame member for ornament - Google Patents

Description

The present disclosure relates to a method for manufacturing a personal accessory and a method for manufacturing a frame member for a personal accessory.

Traditionally, ornaments that include a frame member have been known. For example, Patent Document 1 discloses a body accessory that includes a frame body and a jewel within the frame body, in which the jewel is fitted at either two or six points using pressure from the outside. This frame body is obtained by punching a sheet material with a press to cut out the outer shape and the inner diameter of the heart shape.

JP 2007-054612 A

The present disclosure provides a method for manufacturing a personal accessory having a frame member that can be made lighter and thinner than conventional methods, and a method for manufacturing a frame member for a personal accessory that can be made lighter and thinner than conventional methods.

A first aspect of the present disclosure is a method for manufacturing a personal ornament comprising a frame member, the frame member including a frame main body having a defined front side and a back side, and a back side frame portion, the method comprising the steps of: forming a blank material comprising the frame main body and the back side frame portion extending from the main body outer edge portion, which is an outer edge portion of the frame main body and is a side end face at the outer edge of the single metal plate, by punching a metal plate; and bending the blank material so that the back side frame portion of the blank material extends toward the back side , the step of bending the blank material including the main body end portion including a portion adjacent to the back side frame portion and the back side frame portion together toward the back side, so that at least a portion of the main body end portion, which is an end portion of the frame main body and includes the main body outer edge portion, is warped toward the back side .

A second aspect of the present disclosure is a manufacturing method for a frame member of a personal ornament, the frame member including a frame main body having a defined front side and a back side, and a back side frame portion, the method comprising the steps of: forming a blank material comprising the frame main body and the back side frame portion extending from the main body outer edge portion, which is an outer edge portion of the frame main body and is a side end face at the outer edge of the single metal plate, by punching a single metal plate; and bending the blank material so that the back side frame portion of the blank material extends toward the back side , the step of bending the blank material including the main body end portion including a portion adjacent to the back side frame portion and the back side frame portion together toward the back side, so that at least a portion of the main body end portion, which is an end portion of the frame main body and includes the main body outer edge portion, is warped toward the back side .

The present disclosure provides a method for manufacturing a personal accessory having a frame member that can be made lighter and thinner than conventional methods, and a method for manufacturing a frame member for a personal accessory that can be made lighter and thinner than conventional methods.

FIG. 1 is a front view showing an example of a personal accessory according to the present embodiment. FIG. 2 is a perspective view of the front side showing an example of a personal accessory according to the present embodiment. FIG. 3 is a perspective view of the rear side showing an example of a personal accessory according to this embodiment. FIG. 4 is a flow chart for explaining an example of a manufacturing method of a personal accessory according to the present embodiment. FIG. 5 is a cross-sectional view showing an example of the shape of the inner surface of the first through hole. FIG. 6 is a perspective view showing an example of a frame member obtained by the frame member forming step, and shows the frame member as viewed from the rear side. FIG. 7 is a diagram illustrating an example of a base member. FIG. 8 is a diagram showing an example of a decorative member in which a decorative object is fixed to a base member. FIG. 9 is a rear view showing a modification of the accessory according to the present embodiment. FIG. 10 is a rear view showing a modification of the accessory according to the present embodiment. FIG. 11 is a rear view showing a modification of the accessory according to the present embodiment. FIG. 12 is a rear view showing a modification of the accessory according to the present embodiment.

When manufacturing a personal accessory having a frame member, it is known to create the frame member by a punching process in a press process (for example, Patent Document 1). However, in the past, frame members were only manufactured by shearing through punching, and no three-dimensional ornaments were manufactured by bending and drawing.

For example, a personal ornament having a pendant top is known. The pendant top may have a frame member. Focusing on this frame member, for example, the frame member of the pendant top has often been conventionally manufactured by casting using the lost wax method.

In the case of ornaments manufactured by conventional casting, if the thickness of the desired ornament is too thin (for example, 0.5 mm or less), it is difficult to inject molten metal into every corner of the mold, making it difficult to manufacture thin ornaments. Therefore, it is difficult to manufacture ornaments with thin and light pendant tops.

In contrast, the manufacturing method of the disclosed ornaments, which are manufactured by press processing, allows them to be manufactured from thin metal plates (e.g., 0.2 mm to 0.5 mm), making them lighter and thinner than conventional ornaments (i.e., thinner and lighter than ornaments of a similar design and metal type).

In addition, according to the manufacturing method disclosed herein, since the product is manufactured by pressing, mass production is possible, and the number of steps involved in the finishing process can be reduced. This makes it possible to reduce manufacturing costs compared to conventional manufacturing methods for ornaments by casting. Furthermore, since the product can be made lighter and thinner, it is possible to reduce the amount of bullion used for similar designs and denominations, which also makes it possible to reduce manufacturing costs.

The manufacturing method disclosed herein also provides the following effects. Traditionally, ornaments have been known that have a decorative member containing jewels or the like and a frame member, with the decorative member supported so as to be swingable relative to the frame member (hereinafter, ornaments of this structure may be referred to as swinging ornaments). Even in traditional swinging ornaments, the frame member is manufactured by the lost wax method. In the lost wax method, molten metal is poured into a mold for casting, which makes it easy for air bubbles to form in the base metal.

In contrast, in the manufacturing method disclosed herein, the frame members of the swinging ornament are formed from a metal plate by press processing, so the presence of air bubbles in the base metal is suppressed. Therefore, the swinging ornament obtained by the manufacturing method disclosed herein has a stronger frame member than a swinging ornament having a structure manufactured by a conventional manufacturing method. In addition, since it is believed that press processing causes work hardening, it is believed that the strength of the frame member itself is stronger than that of a frame member in a swinging ornament obtained by a conventional manufacturing method. Therefore, it is easy to obtain a swinging ornament that maintains its strength even when it is lightweight. Here, press processing is a general term for a processing technique in which a metal plate is supplied between a pair of dies and a load is applied to the metal plate by the dies, thereby performing processing such as punching, bending, and drawing.

In swinging ornaments manufactured by conventional manufacturing methods, the decorative member swings relative to the frame member with some damping in response to external vibrations. However, there are cases where the duration of the swinging of the decorative member varies. As mentioned above, swinging ornaments manufactured by conventional manufacturing methods are prone to air bubbles being included in the frame member, etc., which often results in roughness on the surface of the frame member. The dimensions of the part that supports the decorative member so that it can swing relative to the frame member are often small, making it difficult to polish the surface of this part. For this reason, this roughness may cause the part that supports the decorative member relative to the frame member to get caught. In addition, because the frame member is manufactured by casting, the part that supports the decorative member so that it can swing relative to the frame member may have low dimensional accuracy, shape accuracy, etc.

In contrast, in the manufacturing method of the disclosed ornament, the frame member is formed by pressing the metal plate. The metal plate is, for example, rolled, so that there are almost no bubbles in the base metal of the metal plate, as in the case of manufacturing by casting, or even if there are, there are few. Therefore, the surface of the frame member is prevented from becoming rough. As a result, the surface of the frame member is smoother than when manufactured by casting, and it is easier to prevent the engagement between the engagement part of the ornament member and the engagement part of the frame member from getting stuck. In addition, compared to the conventional manufacturing method by casting, the dimensional accuracy and shape accuracy of the part for supporting the ornament member so that it can swing with respect to the frame member are higher. Therefore, compared to the swinging ornament obtained by the conventional manufacturing method, the pedestal member can swing with respect to the frame member with a higher durability. In addition to these, it is possible to reduce the thickness of the ornament, including the engagement part of the frame member. In this case, the contact area of the part for supporting the ornament member so that it can swing with respect to the frame member is reduced, so that the frictional resistance can be reduced. This also improves the durability of the decorative member's swinging motion relative to the frame member.

Below, an example of a preferred embodiment of the manufacturing method for the ornament according to the present disclosure will be described. Note that the ornament according to the present disclosure is not limited to the embodiments described below, and various modifications are possible as long as it has substantially the same configuration as the ornament according to the present disclosure and provides similar effects.

In this disclosure, "integral" means formed from one member, and is a concept that does not include two members being joined together to form one unit.

In this disclosure, the term "ornament" includes gemstones (natural gemstones, synthetic gemstones, artificial gemstones, imitation gemstones, natural stones, etc.), and in particular, natural gemstones, synthetic gemstones, artificial gemstones, imitation gemstones, and natural stones are collectively referred to as gemstones. It is preferable that the ornament be selected from gemstones from the viewpoint of the aesthetic appearance of the accessory.

Natural gemstones include gemstones that occur in nature, such as diamonds, rubies, sapphires, and quartz. Natural gemstones also include treated gemstones, which have been enhanced, altered, or otherwise processed.
A synthetic gemstone is a gemstone that has the same or similar chemical properties, physical properties, and internal structure as a natural stone and is created artificially. Synthetic gemstones are also called man-made gemstones.
Although artificial gemstones do not exist in nature, they have certain chemical and physical properties and internal structure, and are created using substances different from natural gemstones, such as cubic zirconia (CZ) and yttrium-arsenic (YAG).
An imitation gemstone is a gemstone that has the same color, appearance, etc. as a natural gemstone, but has different chemical properties and physical structure; for example, it is made from glass, plastic, ceramics, etc. to imitate a natural gemstone.
Natural stones are stones that are produced in nature other than natural gemstones.

In this disclosure, "plate-like" refers to a plate-like shape. For example, it refers to a shape that has a generally uniform thickness overall.

In this disclosure, the term "approximately" when describing a shape is a concept that includes that shape and shapes close to that shape.

In the present disclosure, in order to explain the relative positional relationship of each part of the ornament, three orthogonal directions (X direction, Y direction, Z direction) are defined based on the ornament. The X direction includes two mutually opposite directions (X1 direction, X2 direction), the Y direction includes two mutually opposite directions (Y1 direction, Y2 direction), and the Z direction includes two mutually opposite directions (Z1 direction, Z2 direction).
The Z direction is set based on, for example, the vertical direction when the ornament of the present disclosure is in a position in which the frame member supports the decorative member so that the decorative member can swing. The Y direction is set based on, for example, the direction from the front side to the back side of the ornament of the present disclosure. The front side of the ornament refers to, for example, the side on which the front of the decorative body is placed, and even if the front of the decorative body is tilted upward, it refers to the side on which the front of the decorative body is placed. The X direction is set to a direction perpendicular to each of the Z direction and the Y direction.
In the following description, the upward direction of the ornament includes the Z1 direction shown in Figs. 1 to 3, and a direction closer to the Z1 direction than the intermediate direction of each direction. The downward direction of the ornament includes the Z2 direction shown in Figs. 1 to 3, and a direction closer to the Z2 direction than the intermediate direction of each direction. The rightward direction of the ornament includes the X1 direction shown in Figs. 1 to 3, and a direction closer to the X1 direction than the intermediate direction of each direction. The leftward direction of the ornament includes the X2 direction shown in Figs. 1 to 3, and a direction closer to the X2 direction than the intermediate direction of each direction. The forward direction of the ornament includes the Y2 direction shown in Figs. 2 and 3, and a direction closer to the Y2 direction than the intermediate direction of each direction. The rearward direction of the ornament includes the Y1 direction shown in Figs. 2 and 3, and a direction closer to the Y1 direction than the intermediate direction of each direction.

First, a preferred example of an ornament obtained by the method for manufacturing an ornament according to this embodiment will be described. Figures 1 to 3 are diagrams showing an example of an ornament obtained by the method for manufacturing an ornament according to this embodiment. The necklace 1 shown in Figures 1 to 3 is an example of an ornament. Figure 1 shows a front view of the necklace 1, Figure 2 shows a perspective view of the necklace 1 as seen from the front side, and Figure 3 shows a perspective view of the necklace 1 as seen from the back side. The necklace 1 comprises a chain 3, which is an example of a string-like member, and a pendant top 2 (an example of the ornament body), and the pendant top 2 is suspended from the chain 3. Figures 1 to 3 focus on the pendant top 2, which is the main part.

The pendant top 2 comprises a frame member 10, which is a pressed product of a single metal plate, and a decorative member 20 supported so as to be swingable relative to the frame member 10. The decorative member 20 comprises a jewel 21, which is an example of a decorative object, and a base member 22 that holds the jewel 21 in place. The base member 22 has four claws 221, which hold the jewel 21 in place.

The frame member 10 has two first engagement parts 13 each having a first through hole 131 formed therein. The two first engagement parts 13 are arranged side by side in the left-right direction on the rear side of the frame member 10. The base member 22 has two second engagement parts 23 each having a second through hole 231 formed therein. The two second engagement parts 23 are arranged in relative positions (i.e., positions in a left-right relationship when viewed from the front side of the jewel 21) sandwiching the jewel 21. One first engagement part 13 and one second engagement part 23 are connected to each other so that the inner surface of the first through hole 131 and the inner surface of the second through hole 231 are in contact with each other. The other first engagement part 13 and the other second engagement part 23 are connected to each other so that the inner surface of the first through hole 131 and the inner surface of the second through hole 231 are in contact with each other. When the two first engagement parts 13 and the two second engagement parts 23 are engaged and connected to each other, the base member 22 that holds the jewel 21 in place is suspended so as to be swingable relative to the frame member 10.

As shown in Figs. 1 to 3, the frame member 10 has a frame body 11. The two first engagement parts 13 each extend from the body outer edge part 110, which is the outer edge part of the frame body 11 (the side end face at the outer edge of the pressed metal plate), to the rear side.

As shown in FIG. 1, the outer edge 110 of the frame body 11 includes a concave portion that is curved concavely in the Z1 direction when viewed from a direction parallel to the Y1 direction from the front side to the rear side, and a convex portion that is curved in the same direction (Z1 direction) as the concave portion when viewed from a direction parallel to the Y1 direction. The concave portion and the convex portion face each other. When viewed from the front side of the frame body 11, it has an inverted V shape with a curved portion.

As shown in FIG. 3, at least a part of the body end 113, which is the end of the frame body 11 (the end including the body outer edge 110), is warped toward the rear side. In the example of FIG. 3, the body end 113 of the frame body 11 is warped toward the rear side at the above-mentioned concave and convex parts of the body outer edge 110. When viewed from the rear side, the frame body 11 has an inner part relative to the body outer edge 110 (a part inside the range surrounded by the body outer edge 110) that is recessed toward the front side. Here, the deepest part of the recessed part refers to the part that is most recessed in the recessed shape.

The two first engagement parts 13 extend from the outer edge 110 of the main body at the end 113 of the main body that is curved toward the rear side. As shown in Figs. 1 to 3, the two first engagement parts 13 extend from spaced apart locations in the concave portion of the outer edge 110 of the main body, sandwiching the innermost part of the concave portion. The apex of the convex portion refers to the most convex part of the convex shape.

As shown in Figs. 1 to 3, the frame member 10 has two rear frame portions 12 extending from the main body outer edge 110 to the rear side. The two rear frame portions 12 extend to the rear side from a part of the main body outer edge 110 at the main body end 113 that is curved to the rear side. In the example of Fig. 3, the two rear frame portions 12 extend from spaced apart locations on the convex portion of the main body outer edge 110, with the apex of the convex portion in between.

The rear frame portion 12 is provided in a shape that follows the frame body 11 from the top of the frame body 11 to the periphery of the vertical center. The rear frame portion 12 has an upper frame 121 that extends from the outer edge portion 110 of the frame body 11 near the top to the rear side, a lower frame 122 that extends from the vertical center of the frame body 11 to the rear side, and an intermediate frame 123 that is provided between the rear end portions of the upper frame 121 and the lower frame 122. The rear frame portion 12 is substantially rectangular in shape, with the vertical dimension being longer than the front-rear dimension, and forms an opening 124 in the area surrounded by the upper frame 121, the lower frame 122, the intermediate frame 123, and the frame body 11. In the example of Figures 2 and 3, the opening 124 penetrates in the left-right direction and has a substantially rectangular shape that is long in the vertical direction. The chain 3 is inserted into this opening 124.

The two rear frame parts 12 extending toward the rear side have a joint part where they are joined to each other at a location away from the outer edge part 110 of the main body of the frame main body 11. For example, the upper frame 121 of one rear frame part 12 and the upper frame 121 of the other rear frame part 12 are joined by a joint part not shown. At the joint part, the two rear frame parts 12 are joined to each other by a method such as welding (e.g., brazing or laser heating). The joint part joining one upper frame 121 to the other upper frame 121 may be provided at one or more locations on the frame main body 11. Also, the joint part may be provided intermittently or continuously.

The cross-section of the lower periphery of the first engagement portion 13 of the frame body 11 cut in a plane perpendicular to the up-down direction has a generally V-shape that widens from the front side to the rear and has a curved portion. The frame body 11 has a similar cross-sectional shape from the bottom to the top. On the other hand, the cross-section of the upper frame 121 and lower frame 122 of the rear frame portion 12 cut in a plane perpendicular to the front-to-rear direction has a generally rectangular shape. The cross-section of the middle frame 123 cut in a plane perpendicular to the up-to-down direction also has a generally rectangular shape.

The thickness of one side of the approximately V-shaped frame body 11 (the distance between the opposing faces in the front-to-rear direction of the V-shaped frame body 11) and the thickness in the left-right direction of the rear frame part 12 (the distance between the opposing faces in the left-to-right direction of the rear frame part 12) are set, for example, in the range of 0.3 mm to 0.4 mm. The thickness of the rear frame part 12, for example, when measured at the lower frame 122, may be 0.2 mm or more, or 0.25 mm or more. This thickness may also be 0.5 mm or less, 0.4 mm or less, or 0.35 mm or less. In the present disclosure, the thickness of the frame member 10 is not particularly limited, and may be set to a thickness suitable for the purpose depending on the design, strength, etc. of the accessory.

The first engagement portion 13 is formed integrally and continuously from the same metal plate as the frame body 11. Here, "formed integrally and continuously" means that the first engagement portion 13 is formed by continuously connecting one and the same metal plate without being divided by the interposition of a different material. As shown in FIG. 3, for example, the first engagement portion 13 has a first ring portion 132 surrounding the first through hole 131 and a first intermediate portion 133 extending from the main body outer edge portion 110 of the frame body 11 to the rear side. The first intermediate portion 133 is interposed between the ring outer edge portion 134, which is the outer edge portion of the first ring portion 132, and the main body outer edge portion 110. That is, the first engagement portion 13 has the first intermediate portion 133 extending from the main body outer edge portion 110 to the rear side and the first ring portion 132 extending from the first intermediate portion 133 to the rear side, and the frame body 11 and the first ring portion 132 are arranged at positions separated from each other. Here, the frame body 11 and the first ring portion 132 being disposed at a distance from each other means that the frame body 11 and the first ring portion 132 are not in contact with each other, and there is a distance between the first ring portion 132 and the frame body 11. In the example of FIG. 3, the first engagement portion 13 is disposed at a position lower than the lower frame 122 and in an area inside the lower frame 122. The first engagement portion 13 extends from the front side to the back side of the pendant top 2 and has a shape bent from the end of the main body. By providing the first intermediate portion 133, for example, when forming the frame member 10, the first engagement portion 13 can be easily bent toward the back side. As a result, the shape of the first ring portion 132 is easily suppressed from being distorted in the bending process described below, and the advantage of being able to stably maintain the shape of the first ring portion 132 is obtained.

Here, the width of the first engagement portion 13 is defined as the width in a direction perpendicular to the thickness direction of the metal plate forming the first engagement portion 13, and the width in a direction perpendicular to the direction in which the first engagement portion 13 extends from the main body outer edge portion 110. In this case, as shown in FIG. 3, the width of the first engagement portion 13 at the first intermediate portion 133 is smaller than the width at the first ring portion 132. In the example of FIG. 3, the first intermediate portion 133 is formed in a substantially rectangular shape. The vertical dimension of the first intermediate portion 133 is shorter than the outer diameter of the first ring portion 132. The first intermediate portion 133 is provided in a shape in which the center position of the first intermediate portion 133 is located on a virtual line that is the shortest distance from the center of the first ring portion 132 to the frame main body 11.

The first ring portion 132 has a circular ring shape (one example of a shape having an arc-shaped curved portion) that allows the second engagement portion 23 of the decorative member 20 to be inserted into the central first through hole 131. The two first ring portions 132 are arranged on the left and right sides of the frame member 10 with their first through holes 131 facing each other.

As shown in FIG. 1, an imaginary plane V is defined in the frame member 10. The imaginary plane V is parallel to the direction from the front side to the rear side (Y1 direction), and is a plane that passes through the concave portion of the main body outer edge portion 110 of the frame main body 11 when viewed from the front side. As shown in FIG. 1 to FIG. 3, the frame member 10 has a shape that is plane-symmetrical with respect to this imaginary plane V.

The two first engagement portions 13 each extend in a direction parallel to the imaginary plane V (including parallel and nearly parallel states). The two first through holes 131 formed in the two first engagement portions 13 are positioned so as to overlap each other when viewed from a direction perpendicular to the imaginary plane V (X1 direction, X2 direction).

The base member 22 includes a base body 220 to which the jewel 21 is fixed, and two second engagement parts 23 arranged on either side of the base body 220. The two second engagement parts 23 are arranged on both sides of the jewel 21 so as to be in relative positions. Each second engagement part 23 includes a second ring part 232 surrounding the second through hole 231, and a plate-shaped second intermediate part 233 extending from the base body 220. The second intermediate part 233 is interposed between the second ring part 232 and the base body 220. A circular opening is provided in the center of the base body 220, and the jewel 21 is fixed and held to the base member 22 with the culet part of the jewel 21 protruding from the opening of the base body 220.

The second intermediate portion 233 is a connecting portion that connects the base body portion 220 and the second ring portion 232. The two second intermediate portions 233 have symmetrical shapes and extend outward from the base body portion 220. In one example, the second intermediate portion 233, the base body portion 220, and the second ring portion 232 are continuously and integrally formed. The second intermediate portion 233 extends from the base body portion 220 and is arranged at an incline with respect to the front surface of the jewel 21. The second ring portion 232 is also inclined in the same manner as the inclination of the second intermediate portion 233. This inclination angle is an angle at which the base body portion 220 is inclined with respect to the front surface of the jewel 21, and may be in the range of more than 0° and not more than 90° with respect to the surface of the base body portion 220 on which the claw portion 221 is provided. The inclination angle may be, for example, 5° or more, or 10° or more. It may also be 60° or less, or 45° or less. The base member 22 can be modified according to the purpose, such as the connection length of the second intermediate portion 233 and the presence or absence of an inclined portion. For example, it is also possible to form the base main body portion 220 and the second ring portion 232 integrally without providing the second intermediate portion 233 in the base member 22, and to form the second ring portion 232 extending directly from the base main body portion 220.

The plate-like second intermediate portion 233 may be twisted, for example. The decorative member 20 can swing even without twisting the second intermediate portion 233, but the aesthetics of the accessory may be improved by providing an appropriate twist to the second ring portion 232. The second intermediate portion 233 may be twisted in its entirety or in part. By providing an appropriate twist to the second intermediate portion 233, the table surface of the jewel 21 can be tilted diagonally upward when the base member 22 holding the jewel 21 in a fixed position is suspended. In this case, the inclination angle of the table surface of the jewel 21 can be set to, for example, 5° to 45° (or 10° to 20°), thereby further improving the aesthetics of the accessory.

Next, an example of a preferred embodiment of the method for manufacturing an ornament according to the present disclosure will be described using the manufacturing method of the necklace 1 shown in FIG. 1 and the like. FIG. 4 is a flow chart for explaining an example of the manufacturing method for an ornament according to this embodiment. Here, the manufacturing method for an ornament frame member according to this embodiment is the same as the blank material forming process and bending process in the manufacturing method for an ornament described below, and therefore will not be described here.

In the manufacturing method of the ornament according to the present embodiment, the frame member 10 is formed by pressing. As shown in FIG. 4, the manufacturing method of the necklace 1 includes a step of preparing a metal plate (metal plate preparation step: ST10) and a step of forming the frame member 10 by pressing (frame member formation step: ST20). The pendant top 2 shown in FIGS. 1 to 3 includes a decorative member 20 that is suspended from the frame member 10 and supported so as to be swingable. Therefore, the manufacturing method of the necklace 1 includes a step of forming an insertion part in the first engagement part 13 of the frame member 10 (insertion part formation step: ST30), a step of preparing the decorative member 20 (decorative member preparation step: ST40), and a step of connecting the second engagement part 23 of the decorative member 20 to the first engagement part 13 of the frame member 10 (connection step: ST50).

(Metal plate preparation process: ST10)
The step of preparing a metal plate is a step of preparing a plate-shaped metal material to be processed according to the desired ornament. In this step, for example, a metal plate that has been subjected to rolling or the like is prepared. The shape of the metal plate is not limited to a flat metal plate cut in advance, but also includes a coil-shaped metal plate. For example, from the viewpoint of workability, the metal plate may be a substantially rectangular shaped metal plate having a cross-sectional shape in the thickness direction. The thickness of the metal plate may be 0.2 mm or more, 0.5 mm or less, 0.4 mm or less, or 0.35 mm or less. The material (metal type) of the metal plate is not particularly limited, and may be, for example, a metal selected from the group consisting of silver, gold, platinum, copper, and iron, or an alloy of these metals (for example, a metal alloy mainly composed of gold, Alloys containing at least one of silver and copper), and alloys mainly made of these metals and containing other metals (for example, alloys mainly made of gold and containing palladium, alloys mainly made of copper and containing zinc, etc.) Any metallic material may be used. The metal plate to be prepared may be made of a desired metal material depending on the ornament to be manufactured. In this disclosure, the "main" component refers to an alloy composed of two or more metal elements. It refers to the component that is contained most abundantly.

(Frame member forming process: ST20)
The process of forming the frame member 10 further includes a step of forming a blank material (blank material forming step: ST21), a step of processing the first through hole 131 of the first engagement portion 13 (first through hole processing step: ST22), a step of folding the blank material (folding step: ST23), and a step of joining the two rear side frame portions 12 folded by the folding step (joining step: ST24).

(Blank material forming process: ST21)
The blank forming process is a process for forming a blank by punching (shearing) one metal plate. In this process, in order to obtain a blank having a desired shape, the prepared metal plate is fed into a die and the metal plate is punched out by generating a shear phenomenon.

The blank material forming process may, for example, be performed only by punching to obtain a blank material of the desired shape. In this case, a blank material of the desired shape may be obtained by a single process of punching out the outer shape and the fine details (such as the first through hole 131). Alternatively, a blank material of the desired shape may be obtained by a multi-stage process of punching out the fine details after punching out the outer shape.

Alternatively, the blank material forming process may obtain a blank material of the desired shape by, for example, shearing and deformation. In this case, a blank material of the desired shape may be obtained in a single process. For example, when punching a metal plate, the outer shape and details may be punched out, and the cross-sectional shape of at least one of the frame main body 11 and the rear frame part 12 may be formed into the desired shape. A blank material of the desired shape may also be obtained in a multi-stage process. For example, after punching out the outer shape, details such as the first through hole 131 may be punched out, and then the cross-sectional shape of at least one of the frame main body 11 and the rear frame part 12 may be formed into the desired shape in a multi-stage process. In this disclosure, drawing and bending are collectively referred to as deformation.

(First through hole processing step: ST22)
FIG. 5 is a cross-sectional view showing an example of the shape of the inner surface of the first through hole 131. As shown in FIG.
In the first through hole processing step, at least a part of the inner surface 136 of the first through hole 131 is inclined so that the diameter of the first through hole 131 becomes smaller from the opening 135 of the first through hole 131 toward the inside. The processing of the first through hole 131 may be performed, for example, by cutting the inner surface of the first through hole 131 with a rotary blade, or may be performed by press processing using a mold. The first through hole 131 of the first engagement portion 13 has a cross-sectional shape perpendicular to the circumferential direction that is generally trapezoidal and tapered toward the inner circumferential surface in the inner circumferential surface region. By adopting such a shape, the second ring portion 232 of the decorative member 20 that contacts the inner peripheral surface side can more easily sustain its swinging motion. However, the cross-sectional shape is not limited to this, and various cross-sectional shapes can be adopted. The first through hole processing step (ST22) may be performed in parallel with the blank piece forming step (ST21) described above in the same press working step.

(Folding process: ST23)
The bending process is a process of obtaining a frame member 10 formed into a desired shape by bending the blank obtained through the first through hole processing process (ST22). This process is performed, for example, by press processing using a mold. The frame member 10 has a three-dimensional shape. In this process, the blank is folded so that the two first engagement parts 13 and the two rear frame parts 12 of the blank are extended toward the rear side. That is, in the folding process, at least a part of the main body end part 113, the two first engagement parts 13, and the two rear frame parts 12 are folded toward the rear side together with respect to the blank so that at least a part of the main body end part 113 (the end part including the main body outer edge part 110) of the frame main body 11 is warped toward the rear side. The main body end part 113 folded together with the first engagement part 13 and the rear frame part 12 in the folding process includes at least a part adjacent to the first engagement part 13 and a part adjacent to the rear frame part 12.

By bending, the rear frame portion 12 becomes the side wall of the frame member 10. The frame member 10 has a three-dimensional shape with a space surrounded by the frame main body 11 and the rear frame portion 12. When the necklace 1 is viewed from the front, the rear frame portion 12 becomes difficult to see. Similarly, when the necklace 1 is viewed from the front, the first engagement portion 13 also becomes difficult to see.

After bending, the bending angle between the frame body 11 and the rear frame portion 12, and the bending angle between the frame body 11 and the first engagement portion 13 (first intermediate portion 133) should be approximately 90° (for example, 80° to 100°, preferably 85° to 95°). From the viewpoint of aesthetics, this bending angle is preferably an obtuse angle of approximately 90°. In this disclosure, the bending angle is the angle from the frame body 11, and represents the outer angle in the bending direction of the rear frame portion 12 and the first engagement portion 13 (first intermediate portion 133). The order in which the rear frame portion 12 and the first engagement portion 13 are bent is not limited, and they may be bent simultaneously, or one of the portions may be bent first. The bending may be performed in multiple stages or in one stage.

The blank forming process (ST21) and the folding process (ST23) may be performed in separate dies, or may be performed in the same die. These processes may be performed by progressive pressing, or may be performed by a single press using a foot press.

(Joining process: ST24)
In the joining step, the two rear frame parts 12 bent toward the rear side in the bending step (ST23) are joined at least at one location (e.g., a location away from the main body outer edge part 110). , for example by brazing, welding, etc.

Note that if any of the steps in the frame member forming process ST20 are unnecessary due to the shape of the desired frame member, that step may be omitted.

(Insertion part forming process: ST30)
The insertion portion forming step forms an insertion portion in a part of a member (first ring portion 132) surrounding the first through hole 131 in each first engagement portion 13 of the frame member 10 formed in the frame member forming step (ST20). For example, the insertion portion forming step may form the insertion portion in a part of the first ring portion 132 by a method such as heating with a laser, cutting with a rotary blade or the like, or cutting with a tool such as scissors.

(Decorative member preparation process: ST40)
The decorative member preparation process is a process for preparing the decorative member 20 to be attached to the frame member 10, and further includes a process for forming the base member 22 (base member formation process: ST41) and a process for fixing and holding the jewel 21 on the base member 22 (fixing and holding the decorative body: ST42).

(Base member forming process: ST41)
The base member forming process is a process for obtaining the base member 22 from a metal plate. When the base member 22 is formed by press working, a predetermined metal plate is prepared in this process. The metal plate may be made of the same material as the metal plate prepared for producing the frame member 10, or may be made of a different material. Then, the base member 22 is formed by performing a predetermined press working process (shearing, bending, drawing, etc.) on the metal plate.

The base member 22 is integrally formed with the base main body 220, two second engagement parts 23 (second ring part 232, second intermediate part 233), and four claw parts 221. Specifically, a blank for the base member is first obtained by shearing a metal plate. The blank for the base member is provided with the base main body 220 having four radially extending claw parts 221 at approximately equal intervals and a substantially circular opening in the center. The blank for the base member is also provided with a substantially rectangular second intermediate part 233 that is disposed on either side of the base main body 220 and extends from between the two claw parts 221 in a direction away from each other, and a second ring part 232 that is formed in a ring shape and has a second through hole 231 in the center and extends from the tip of the second intermediate part 233. Next, in the base member forming process, the base main body 220 is drawn into a dish-shaped shape that allows the placement of the jewel 21. In addition, the second intermediate portion 233 is twisted in a direction inclined toward the front side. Through these processes, the base member 22 is obtained. The base member 22 may be produced by progressive press processing, or may be produced by a single press process using a foot press (foot-operated press). The base member 22 may be produced by casting other than press processing. From the viewpoint of production costs, etc., it is preferable to produce the base member 22 by press processing.

Depending on the desired base member 22, the base member 22 to be formed may be a base member 22 having a second engaging portion 23 without a second intermediate portion 233, or a base member 22 having a second intermediate portion 233 without a twisted portion. When obtaining a base member 22 without a second intermediate portion 233 and a base member 22 without a twisted portion, the step of twisting the second intermediate portion 233 is omitted.

(Decorative body fixing and holding process: ST42)
The step of fixing and holding the ornamental body is a step of placing the gemstone 21 on the base body 220 of the obtained base member 22 and fixing and holding it. Fig. 7 is a diagram showing an example of the base member 22 before the gemstone 21 is fixed. Fig. 8 is a diagram showing an example of the ornamental member 20 in which the gemstone 21 is fixed to the base member 22. In the example of Fig. 8, the gemstone 21 is a faceted gemstone. The gemstone 21 is placed on the base body 220 with the culet protruding from a substantially circular opening provided in the base body 220. Next, the four claws 221 are inclined toward the front side of the gemstone 21 to fix and hold it.

(Connection process: ST50)
The connecting step is a step of connecting the second engagement portion 23 of the decorative member 20 to the first engagement portion 13 of the frame member 10. Specifically, and the first engaging portion 13 of one of the frame members 10 are connected to each other so that the inner surface of the first through hole 131 and the inner surface of the second through hole 231 are in contact with each other. The second engaging portion 23 and the other first engaging portion 13 of the frame member 10 are connected to each other so that the inner surface of the first through hole 131 and the inner surface of the second through hole 231 are in contact with each other. This is an example of an attachment process for attaching the second engagement portion 23 of the decorative member 20 to the first engagement portion 13 of the frame member 10.

Specifically, the connecting step (ST50) includes an insertion step (ST51) of inserting the second ring portion 232 of the second engaging portion 23 into the first through hole 131 from the insertion portion of the two first engaging portions 13 formed in the insertion portion forming step (ST30), and an insertion portion blocking step (ST52) of blocking the insertion portions of the two first engaging portions 13 after the insertion step (ST51). In the insertion step (ST51), the annular second ring portion 232 is inserted into the insertion portion formed in the first engaging portion 13, and the inner peripheral edges of the first ring portion 132 and the second ring portion 232 are brought into contact with each other in a direction where the circumferential direction of the first ring portion 132 and the circumferential direction of the second ring portion 232 intersect. Then, in the insertion portion closing step (ST52), both ends of the insertion portion of the first ring portion 132 are butted together and pressed to reduce the gap, plastically deforming the first ring portion 132 into an annular shape. This allows the left and right annular second ring portions 232 to be connected and engaged with the left and right first ring portions 132, respectively. After plastically deforming the first ring portion 132 as described above, the butted ends of the first ring portion 132 can also be joined together by brazing, laser heating, or the like, if necessary.

(Other processes)
The above manufacturing method may include other steps (e.g., a finishing step). The finishing step is a step in which the obtained frame member 10 and base member 22 are finished by performing various processes such as polishing. In the finishing step, after the polishing process, plating (e.g., plating with a platinum group metal such as rhodium) may be performed as necessary. In addition, a string-like member insertion step is performed in which a chain 3, which is an example of a string-like member, is inserted into the top of the frame member 10, thereby obtaining a necklace 1, which is an ornament with a pendant top 2 suspended therefrom.

Through the above steps, a necklace 1 is obtained in which a decorative member 20 including a jewel 21 is suspended from a frame member 10 and supported so that it can swing.

(Summary of this embodiment)
As described above, the method for manufacturing a personal accessory according to this embodiment has the following features, for example.

The manufacturing method for the personal ornament in this embodiment includes a blank material formation process (ST20) in which a blank material having a frame main body 11 and a rear side frame portion 12 extending from a main body outer edge portion 110, which is the outer edge of the frame main body 11, is formed by punching a metal plate, and a folding process (ST23) in which the blank material is folded so that the rear side frame portion 12 of the blank material extends toward the rear side.
With this configuration, a blank material formed by punching a single metal plate is subjected to bending processing to form a frame member 10 in which the rear frame portion 12 extends toward the rear side relative to the frame main body 11, making it possible to manufacture a lighter and thinner piece of jewelry than when a frame member is formed by a method such as casting.

In the manufacturing method of the personal accessory according to this embodiment, the bending process (ST24) includes bending the main body end portion 113, which is the end portion of the frame main body 11 (the end portion including the main body outer edge portion 110), including the portion adjacent to the rear side frame portion 12, and the rear side frame portion 12 together toward the rear side, so that at least a portion of the main body end portion 113 is warped toward the rear side.
According to this configuration, the main body end portion 113 including the portion adjacent to the rear-side frame portion 12 and the rear-side frame portion 12 are bent together in the folding step (ST24). This makes it difficult for a step to occur at the folding point between the main body end portion 113 adjacent to the rear-side frame portion 12 and the rear-side frame portion 12. This makes it possible to suppress a decrease in strength at the folding point and improve the aesthetic appearance.

In the manufacturing method of the ornament according to this embodiment, the blank forming step (ST21) includes forming a blank comprising a frame main body 11 having a main body outer edge 110 including a convex portion bent in a convex shape when viewed from the front side, and two rear frame portions 12 extending from spaced apart locations in the convex portion, sandwiching the apex of the convex portion. The manufacturing method of the ornament according to this embodiment also includes a joining step (ST24) of joining the two rear frame portions 12 bent toward the rear side in the folding step (ST23) at at least one location (e.g., a location away from the main body outer edge 110).
According to this configuration, the rear frame portion 12 extends from the main body outer edge portion 110 of the main body end portion 113 curved toward the rear side to the rear side, so that when the necklace 1 is viewed from the front side, it is possible to hide the step between the rear frame portion 12 and the main body outer edge portion 110, improving the aesthetics. In addition, since the main body end portion 113 is curved toward the rear side in the convex portion, the strength of the frame main body 11 can be increased even if the thickness of the metal plate subjected to the press processing is thin. Furthermore, since the two rear frame portions 12 extending from the places separated by the apex of the convex portion are joined to each other at least one place (for example, a place away from the main body outer edge portion 110), the strength of the frame member 10 can be further increased.

In the method for manufacturing a personal accessory according to this embodiment, the blank formation step (ST21) includes forming a blank having at least one first engagement portion 13 extending from the main body outer edge portion 110 of the frame main body 11. The method for manufacturing a personal accessory according to this embodiment also includes an attachment step of attaching the second engagement portion 23 of the decorative member 20, which has at least one second engagement portion 23 engageable with the first engagement portion 13, to the first engagement portion 13 such that the second engagement portion 23 of the decorative member 20 engages with the first engagement portion 13. The decorative member 20 becomes swingable relative to the frame member 10 in a state in which the first engagement portion 13 and the second engagement portion 23 are engaged with each other.
With this configuration, the first engagement portion 13 is part of the frame member 10, which is a pressed product of a single metal plate, and is not fixed to the main body of the frame member 10 by a method such as brazing, thereby increasing the strength of the portion of the frame member 10 that supports the decorative member 20 in a swingable manner.

The manufacturing method of the ornamental frame member in this embodiment includes a blank material formation process (ST20) in which a blank material having a frame main body 11 and a rear side frame portion 12 extending from a main body outer edge portion 110, which is the outer edge portion of the frame main body 11, is formed by punching a single metal plate, and a folding process (ST23) in which the blank material is folded so that the rear side frame portion 12 of the blank material extends toward the rear side.
With this configuration, a blank material formed by punching a single metal plate is subjected to bending processing to form a frame member 10 in which the rear frame portion 12 extends toward the rear side relative to the frame main body 11, making it possible to manufacture a frame member for a personal accessory that is lighter and thinner than when it is formed by a method such as casting.

(Modification)
In the above embodiment, the case where there are two rear frame parts provided on the outside of the frame main body has been described. The number of rear frame parts is not limited to this, and may be, for example, three or four. The number of rear frame parts may be determined according to the shape of the desired frame member. In addition, in the above embodiment, the case where the shape of the frame main body when viewed from the front is an inverted V shape has been described. The shape of the frame member is not limited to this, and may be a rhombus, a circle, an oval, an oblong, a horseshoe, a teardrop, or the like, and may be determined according to the shape of the desired frame member. In addition, the position of the first engagement part extending from the frame member may be determined according to the shape of the desired frame member. It is also possible to attach an ornament such as a jewel to the frame main body of the frame member.

In the above embodiment, a case where an ornament is manufactured in which the first ring portion 132 of the frame member 10 and the second ring portion 232 of the decorative member 20 have an overall ring shape has been described as an example. In addition, the ornament obtained by the manufacturing method of the present disclosure may be formed so that when the first engaging portion of the frame member and the second engaging portion of the decorative member are engaged and connected to each other through holes, the part that contacts each other (part of the inner surface of the through hole) has an arc-shaped (ring-shaped) shape, and the other part has a non-arc-shaped shape. In addition, in the above embodiment, a case where an ornament in which one decorative member 20 is suspended from one frame member 10 has been described. In addition, the ornament obtained by the manufacturing method of the present disclosure may be an ornament in which two or more decorative members are suspended from one frame member.

In the above embodiment, a manufacturing method for a personal ornament in which a first engaging portion 13 having a first intermediate portion 133 and a first ring portion 132 is provided on a frame member 10 as a portion for supporting a decorative member 20 to be swingable relative to the frame member 10 has been described. However, the present disclosure is not limited to this, and the personal ornament obtained by the manufacturing method may have a structure in which the frame member 10 is provided with a first engaging portion 13A having a recessed shape as a portion for supporting the decorative member 20 to be swingable relative to the frame member 10, as shown in FIG. 9. In this case, although not shown, for example, a blank material for a frame member may be provided with a portion having a box shape that is expanded so that the shape after the folding process is a box shape that opens toward the inside in the left-right direction of the frame member 10 as a portion corresponding to the first engaging portion 13A. By folding the portion having the expanded box shape in the folding process, a box-shaped first engaging portion 13A as shown in FIG. 9 is formed. The second engagement portion 23A of the decorative member 20 for engaging with the first engagement portion 13A may be a rod-shaped member extending in the left-right direction from the base main body 220, as shown in FIG. 9. In this structure, the first engagement portion 13A, which is recessed and has a hole 138A, engages with the rod-shaped second engagement portion 23A, thereby supporting the decorative member 20 so that it can swing. The second engagement portion 23A may be formed so that the contact area with the hole 138A is small.

In another embodiment, as shown in FIG. 10, the second engagement portion 23B of the decorative member 20 inserted into the hole 138B of the recessed first engagement portion 13B may be bent in a crank shape. Specifically, the second engagement portion 23B may extend in the left-right direction from both sides of the base body portion 220, extend upward at a predetermined position, then extend in the left-right direction, and further extend downward. The tip of the downwardly extending second engagement portion 23B comes into contact with the bottom surface of the hole 138B of the first engagement portion 13B, so that the decorative member 20 is supported so as to be able to swing relative to the frame member 10. In this structure, the contact area between the bottom surface of the hole 138B of the first engagement portion 13B and the tip of the second engagement portion 23B has a small area, which makes it easier to maintain the swinging state.

In addition, as shown in FIG. 11, the ornament obtained by the manufacturing method of the present disclosure may have a rod-shaped first engagement portion 13C extending inward in the left-right direction on the frame member 10 as a portion that supports the decorative member 20 swingably relative to the frame member 10. In this case, although not shown, the blank material for the frame member may have a rod-shaped portion that extends in a convex shape toward the inside of the frame member 10 after deformation processing as a portion corresponding to the first engagement portion 13C. This rod-shaped portion becomes the first engagement portion 13C as shown in FIG. 11. The second engagement portion 23C of the decorative member 20 for engaging with the first engagement portion 13C is, for example, a ring-shaped member fixed to the base main body portion 220 as shown in FIG. 11, and has a hole 238C penetrating in the left-right direction. The engagement between the inner surface of this hole 238C and the rod-shaped first engagement portion 13C results in the decorative member 20 being swingably supported relative to the frame member 10.

Furthermore, the ornament obtained by the manufacturing method of the present disclosure may have a structure in which, as shown in FIG. 12, a first engagement portion 13D in an annular shape is provided above the frame member 10 as a portion that supports the decorative member 20 to be swingable relative to the frame member. In this case, although not shown, the blank material for the frame member may have a ring-shaped portion having an inner peripheral surface that is curved and extends in the left-right direction of the frame member 10 after deformation processing as a portion corresponding to the first engagement portion 13D. This ring-shaped portion becomes the first engagement portion 13D as shown in FIG. 12. The second engagement portion 23D of the decorative member 20 for engaging with the first engagement portion 13D is a ring-shaped member that is connected to the base main body portion 220 as shown in FIG. 12, for example, and has a hole 238D that penetrates in the left-right direction. The first engagement portion 13D in an annular shape of the frame member 10 and the second engagement portion 23D in an annular shape of the decorative member 20 are connected to each other so that their inner peripheral surfaces come into contact with each other, thereby making the decorative member 20 swingably supported relative to the frame member 10.

Without being limited to the above, the ornament obtained by the manufacturing method of the present disclosure may be an ornament composed of a frame member, other than a swingable ornament, although not shown. For example, it may be an ornament comprising a frame member in which a decorative body such as a jewel is fitted at a predetermined position after the frame member is formed by shearing, bending and drawing. The decorative member may be any member that is supported to be swingable relative to the frame member for decoration, and is not limited to a form in which a decorative body such as a jewel is fixed to a base. For example, it may be an ornament in which two second engagement parts are integrally formed on the main body of the decorative member made of the desired material such as metal.

In the above embodiment, an example of a necklace 1 having a pendant top 2 has been described as an example of a personal accessory obtained by the manufacturing method of the present disclosure. In addition to this, the personal accessory obtained by the manufacturing method of the present disclosure may be other personal accessories such as earrings, brooches, and necktie clips. Of these, either a necklace or earrings is preferable. In this disclosure, a necklace is a general term for neck accessories including pendants, and earrings is a general term for ear accessories including earrings and pierced earrings.

Although an example of a preferred embodiment of the present disclosure has been described above, the manufacturing method of the present disclosure is not limited to these embodiments. Addition, omission, substitution, and other modifications of the configuration are possible within the scope of the spirit of the present disclosure.

The following notes relate to the ornaments and the manufacturing method for the ornaments of the present disclosure.
[Appendix 1]
A method for manufacturing a personal ornament having a frame member, comprising:
The frame member includes:
A frame body having a front side and a back side defined thereon;
A rear frame portion,
A step of forming a blank material including the frame main body and the rear side frame portion extending from a main body outer edge portion, which is an outer edge portion of the frame main body, by punching a single metal plate;
and folding the blank material so that the rear frame portion of the blank material extends toward the rear side.
[Appendix 2]
The step of bending the blank includes bending the end of the frame body, the end including the outer edge of the body, toward the rear side together with the rear frame portion, so that at least a part of the end of the frame body, the end including the outer edge of the body, is warped toward the rear side.
A method for manufacturing the accessory described in Appendix 1.
[Appendix 3]
The step of forming the blank includes:
the frame body having the body outer edge portion including a convex portion that is curved convexly when viewed from the front side;
and forming the blank material including two or more rear side frame portions, wherein one or more of the rear side frames and one or more of the other rear side frames extend from spaced apart locations in the convex portion, the spaced apart locations being sandwiched between an apex of the convex portion,
a step of joining the one or more rear side frames bent to the rear side by the step of bending the blank material and the one or more other rear side frames at at least one location,
A method for manufacturing the accessory described in Appendix 2.
[Appendix 4]
The ornament includes a decorative member supported swingably on the frame member,
The step of forming the blank includes forming the blank including at least one first engagement portion extending from the body outer edge portion of the frame body;
a step of attaching the second engagement portion of the decorative member to the first engagement portion such that the second engagement portion of the decorative member engages with the first engagement portion, the second engagement portion being provided with at least one second engagement portion engageable with the first engagement portion;
The decorative member is capable of swinging relative to the frame member in a state in which the first engagement portion and the second engagement portion are engaged with each other.
A method for manufacturing a personal ornament according to any one of claims 1 to 3.
[Appendix 5]
The step of bending the blank includes bending the main body end portion including a portion adjacent to the rear frame portion and a portion adjacent to the first engagement portion, the rear frame portion, and the first engagement portion together toward the rear side such that at least a portion of the main body end portion, which is an end portion of the frame main body and includes the outer edge portion of the main body, is warped toward the rear side.
A method for manufacturing the accessory described in Appendix 4.
[Appendix 6]
The step of forming the blank includes forming the blank member including the first engagement portion having a first through hole formed therein,
The step of attaching the second engagement portion to the first engagement portion includes connecting the second engagement portion, in which a second through hole is formed, and the first engagement portion such that an inner surface of the first through hole and an inner surface of the second through hole are in contact with each other.
A method for manufacturing a personal ornament according to claim 4 or 5.
[Appendix 7]
The accessory is a necklace or earrings.
A method for manufacturing a personal ornament according to any one of claims 1 to 6.
[Appendix 8]
A method for manufacturing a frame member for a personal ornament, comprising the steps of:
The frame member includes:
A frame body having a front side and a back side defined thereon;
A rear frame portion,
A step of forming a blank material including the frame main body and the rear side frame portion extending from a main body outer edge portion, which is an outer edge portion of the frame main body, by punching a single metal plate;
a step of folding the rear frame portion of the blank material toward the rear side relative to the frame main body.

1: Necklace 2: Pendant top 3: Chain 10: Frame member 11: Frame body 110: Body outer edge portion 113: Body end portion 12: Back side frame portion 121: Upper frame 122: Lower frame 123: Intermediate frame 124: Opening 13, 13A to 13D: First engagement portion 131: First through hole 132: First ring portion 133: First intermediate portion 134: Ring outer edge portion 135: Opening 136: Inner surface 138A, 138B, 238C, 238D: Hole 20: Decorative member 21: Jewelry 22: Base member 220: Base body portion 221: Claw portion 23, 23A to 23D: Second engagement portion 231: Second through hole 232: Second ring portion 233: Second intermediate portion

Claims (4)

A method for manufacturing a personal ornament having a frame member, comprising:
The frame member includes:
A frame body having a defined front side and a defined back side;
A rear frame portion,
forming a blank material including the frame body and the rear frame portion extending from an outer edge portion of the frame body, the outer edge portion being a side end face at the outer edge of the metal plate, by punching a metal plate;
and bending the blank material so that the rear frame portion of the blank material extends toward the rear side.
The step of bending the blank includes bending the end of the frame body, the end including the outer edge of the body, toward the rear side together with the rear frame portion, so that at least a part of the end of the frame body, the end including the outer edge of the body, is warped toward the rear side.
Manufacturing method of ornaments. The step of forming the blank includes:
the frame body having the body outer edge portion including a convex portion that is curved convexly when viewed from the front side;
forming the blank material including two or more rear side frame portions , each of which extends from a spaced apart location on the convex portion, the one or more rear side frame portions and the other one or more rear side frame portions being spaced apart from each other across an apex of the convex portion;
a step of joining the one or more rear side frame parts bent to the rear side by the step of bending the blank material to the other one or more rear side frame parts at at least one location,
A method for manufacturing the accessory according to claim 1 . The ornament includes a decorative member supported swingably on the frame member,
The step of forming the blank includes forming the blank including at least one first engagement portion extending from the body outer edge portion of the frame body;
a step of attaching the second engagement portion of the decorative member to the first engagement portion such that the second engagement portion of the decorative member engages with the first engagement portion, the second engagement portion being provided with at least one second engagement portion engageable with the first engagement portion;
The decorative member is capable of swinging relative to the frame member in a state in which the first engagement portion and the second engagement portion are engaged with each other.
A method for manufacturing the accessory according to claim 1 or 2 . A method for manufacturing a frame member for a personal ornament, comprising the steps of:
The frame member includes:
A frame body having a front side and a back side defined thereon;
A rear frame portion,
forming a blank material including the frame body and the rear frame portion extending from an outer edge portion of the frame body, the outer edge portion being a side end face at the outer edge of the metal plate, by punching a metal plate;
and bending the blank material so that the rear frame portion of the blank material extends toward the rear side.
The step of bending the blank includes bending the end of the frame body, the end including the outer edge of the body, toward the rear side together with the rear frame portion, so that at least a part of the end of the frame body, the end including the outer edge of the body, is warped toward the rear side.
A method for manufacturing a frame member for a personal ornament.

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