Method for manufacturing decorative member, and decorative member

Abstract

To provide a manufacturing method for a member for decorative articles, which can produce various decorative articles without requiring welding. [Solution] A manufacturing method for a decorative item component 10 that is the basis for a decorative item 110, wherein the decorative item component 10 is a continuous component cut out from a metal plate in a predetermined planar shape, and has multiple linear portions cut out in lines with a thickness of 3 mm or less. By performing a predetermined plastic processing on the decorative item component 10, including processing to bend or twist at least some of the multiple linear portions, a decorative item 110 with a predetermined three-dimensional shape can be obtained. This involves a design step in which the planar shape of the decorative item component 10 is determined, and a cutting step in which the metal plate is cut out into the planar shape determined in the design step.

Description

[Technical Field]

[0001] The present invention relates to decorative articles and the like having a three-dimensional shape made of metal material. [Background technology]

[0002] Three-dimensional ornaments made of metal materials are generally produced by joining multiple members together by welding, etc. Patent Document 1 describes a head ornament in which at least one ornamental member is joined onto a body ornament member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3220940 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, the performance of laser processing machines has improved, making it possible to precisely process metal materials. The inventor of the present application noticed that a laser processing machine can cut metal materials with high precision, and came up with the idea that a variety of decorative items can be produced by plastically processing the decorative item component according to the planar shape of the "continuous decorative item component" cut from a metal plate.

[0005] The present invention has been made in view of the above circumstances, and aims to provide a method for manufacturing decorative components that allows for the production of various decorative items without the need for welding. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the first invention is a method for manufacturing a decorative component that serves as the basis for an ornament, wherein the decorative component is a continuous component cut out from a metal plate in a predetermined planar shape, and has a plurality of linear portions cut out in lines with a thickness of 3 mm or less, and the method comprises a design step for determining the planar shape of the decorative component, and a cutting step for cutting out the metal plate in the planar shape determined by the design step, so that an ornament of a predetermined three-dimensional shape can be obtained by performing a predetermined plastic processing on the decorative component, including processing to bend or twist at least some of the linear portions.

[0007] In the second invention, in the first invention, the decorative element has a first circumferential portion and a second circumferential portion that extend linearly around the circumference, and a connecting linear portion that connects the first circumferential portion and the second circumferential portion, and in the decorative element, the second circumferential portion has a plurality of bent or curved portions and is positioned inside the first circumferential portion, and in the design step, plastic processing is performed that at least stretches at least some of the bent portions and processes the connecting linear portion, thereby determining the planar shape of the decorative element so that an decorative element is obtained in which the surface formed by the first circumferential portion and the surface formed by the second circumferential portion face each other or intersect.

[0008] In a third aspect of the present invention, in the second aspect of the present invention, the planar shape of the decorative article member is determined in the design step so that a decorative article in which the second winding portion has a shape substantially similar to that of the first winding portion is obtained.

[0009] In a fourth invention, in the first invention, the decorative element has a circumferential portion extending linearly around the circumference, a plurality of first pattern portions connected to the circumferential portion and aligned in the circumferential direction of the circumferential portion, and a plurality of second pattern portions connected to the circumferential portion and aligned in the circumferential direction of the circumferential portion, and in the design step, the planar shape of the decorative element is determined so that a decorative element is obtained in which at least a portion of the area consisting of the plurality of first pattern portions and the plurality of second pattern portions exhibits a tubular portion by performing plastic processing at least by bending the first pattern portions and the second pattern portions in opposite directions at the connection points with the circumferential portion.

[0010] In the fifth invention, in the first invention, the decorative element has a plurality of pattern portions arranged in a circumferential direction and a plurality of connecting linear portions connecting adjacent pattern portions, and in the design step, as plastic processing, at least processing is performed to bend the ends of the connecting linear portions at the connection points with each of the pattern portions and to bend the connecting linear portions so as to fold back at the center, thereby determining the planar shape of the decorative element so as to obtain a decorative element in which each of the adjacent pattern portions is close to each other at the connection points with the connecting linear portions.

[0011] The sixth invention is directed to the first invention, in which the decorative element has an extension extending in a first direction and a side component that is continuous with the extension on one side in a second direction perpendicular to the first direction and that forms a side surface of the decorative element, and in the decorative element, the side component has an inner component and an outer component that are located at different positions in the first direction, the inner component and the outer component being separated by a gap, and in the design step, as plastic processing, at least a process is performed in which the side component is bent relative to the extension so that the inner component side is bent more than the outer component side, and a process is performed in which the extension is bent in a Z-order manner in the thickness direction of the metal plate, thereby determining the planar shape of the decorative element so that a decorative element is obtained in which the outer component is located outside the inner component when viewed from the side.

[0012] The seventh invention is a decorative component that serves as the basis for an ornament, which is a continuous component cut out from a metal plate in a predetermined planar shape, and has a plurality of linear portions cut out in lines with a thickness of 3 mm or less.The planar shape of the decorative component is determined so that an ornament of a predetermined three-dimensional shape can be obtained by subjecting the decorative component to a predetermined plastic processing, which includes processing to bend or twist at least a portion of the plurality of linear portions. [Effects of the Invention]

[0013] In the present invention, the decorative component is a continuous component cut out from a metal plate into a predetermined planar shape, and has multiple linear portions cut out into lines with a thickness of 3 mm or less. In the design step, the planar shape of the decorative component is determined so that an ornamental product of a predetermined three-dimensional shape can be obtained by subjecting the decorative component to a predetermined plastic processing, including processing to bend or twist at least a portion of the multiple linear portions. The decorative component is then obtained by cutting out a metal plate into the planar shape determined in the design step. In the present invention, the decorative component, whose planar shape was determined in the design step, is subjected to a predetermined plastic processing to obtain an ornamental product of a predetermined three-dimensional shape. Therefore, a variety of ornamental products can be obtained from a continuous decorative component depending on how the planar shape of the decorative component is determined. This invention provides a method for manufacturing decorative components that allows for the production of a variety of ornamental products without the need for welding. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a plan view of a decorative member according to a first embodiment. [Figure 2] FIG. 2 is a perspective view of an ornament obtained by subjecting the ornament member of FIG. 1 to a predetermined plastic working process. [Figure 3] FIG. 3 is a plan view of a decorative member according to the second embodiment. [Figure 4] FIG. 4 is a perspective view of an ornament obtained by subjecting the ornament member of FIG. 3 to a predetermined plastic working process. [Figure 5] FIG. 5 is a plan view of a decorative member according to a third embodiment. [Figure 6] FIG. 6 is a perspective view of an ornament obtained by subjecting the ornament member of FIG. 5 to a predetermined plastic working process. [Figure 7] FIG. 7 is a plan view of a decorative member according to a fourth embodiment. [Figure 8] FIG. 8 is a perspective view of an ornament obtained by subjecting the ornament member of FIG. 7 to a predetermined plastic working process. [Figure 9]FIG. 9 is a plan view of a decorative member according to a fifth embodiment. [Figure 10] Figure 10(A) is a perspective view of an ornament obtained by performing a specified plastic processing on the ornamental component of Figure 9, and Figure 10(B) is an enlarged view of the area indicated by the symbol 59 in Figure 10(A). [Figure 11] FIG. 11 is a plan view of a decorative member according to a sixth embodiment. [Figure 12] Figure 12(A) is a perspective view of an ornament obtained by subjecting the ornamental component of Figure 11 to a specified plastic processing, and Figure 12(B) is an enlarged view showing the state of the linear connecting portion that connects adjacent pattern portions of the ornament of Figure 12(A) after processing. [Figure 13] FIG. 13 is a plan view of a decorative member according to the seventh embodiment. [Figure 14] FIG. 14 is a perspective view of an ornament obtained by subjecting the ornament member of FIG. 13 to a predetermined plastic working process. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the following embodiments are merely examples of the present invention and are not intended to limit the scope of the present invention, its applications, or its uses.

[0016] The first to seventh embodiments will be described below. Each embodiment is a decorative component that is the basis for a decorative item, and a manufacturing method for a decorative component. A decorative component is a component that can be used to create a decorative item by manual plastic processing using tools such as needle-nose pliers. A decorative item can be obtained from a decorative component only by plastic processing. Metals such as iron and stainless steel can be used as materials for decorative components.

[0017] Decorative components can be obtained by laser cutting a metal plate (e.g., a flat thin plate) into a predetermined shape using a laser processing machine. Decorative components are continuous (connected) components cut into a predetermined planar shape from a metal plate, and have multiple linear portions cut out in a linear shape. The thickness of the linear portions (the larger of the thickness and width) is, for example, 3 mm or less. In this case, the thickness of the metal plate is 3 mm or less, and the width of the linear portions in the planar shape is 3 mm or less. The thickness of the linear portions can also be 1.5 mm or less. In this case, the thickness of the metal plate is 1.5 mm or less, and the width of the linear portions in the planar shape is 1.5 mm or less.

[0018] The planar shape of the decorative article member is determined so that an ornamental article of a predetermined three-dimensional shape can be obtained by subjecting the decorative article member to a predetermined plastic processing, which includes processing in which at least a portion of the multiple linear portions is bent or twisted. By performing the bending or twisting processing, the decorative article takes on a three-dimensional shape.

[0019] The method for manufacturing a decorative item includes a designing step and a cutting step. In the designing step, the planar shape of the decorative item component is determined so that a decorative item of a predetermined three-dimensional shape can be obtained by performing a predetermined plastic processing on the decorative item component, including processing to bend or twist multiple linear portions. The decorative item component is then obtained by cutting out a metal plate into the planar shape determined in the designing step.

[0020] First Embodiment This embodiment is an ornamental item component 10 having a planar shape as shown in Figure 1. By subjecting the ornamental item component 10 to a predetermined plastic processing, a cube-shaped die is obtained as the ornamental item 110 shown in Figure 2. The ornamental item component 10 and a method for manufacturing the ornamental item component 10 will be explained below. Also, the predetermined plastic processing used to produce the ornamental item 110 from the ornamental item component 10 will not be explained in its entirety, but will be explained to the extent necessary. This is the same for the other embodiments.

[0021] The decorative member 10 has, as linear portions, a first winding portion 11 and a second winding portion 12 that extend linearly around the circumference, and four connecting linear portions 19 that extend linearly and connect the first winding portion 11 and the second winding portion 12. The first winding portion 11 is circular. The second winding portion 12 is shaped like a roughly cross frame and has multiple bent or curved portions (bent points) B. The second winding portion 12 is entirely disposed inside the first winding portion 11.

[0022] Each connecting linear portion 19 has a meandering shape. In Fig. 1, the connection point of the connecting linear portion 19 to the first winding portion 11 is indicated by reference symbol C1, and the connection point of the connecting linear portion 19 to the second winding portion 12 is indicated by reference symbol C2.

[0023] Here, in the design step described above, the planar shape of the decorative item component 10 is determined so that by performing the predetermined plastic processing, at least a process of stretching at least a portion of the multiple bent portions B (processing of the second winding portion 12) and a process of bending the connecting linear portions 19, an decorative item (cubic decorative item) 110 can be obtained in which the surface formed by the first winding portion 11 and the surface formed by the second winding portion 12 face each other. The design step also determines the planar shape of the decorative item component 10 so that an decorative item 10 can be obtained in which the second winding portion 12 has a shape roughly similar to that of the first winding portion 11. Then, in the cutting step, the decorative item component 10 is obtained by cutting out the metal plate into the planar shape determined in the design step.

[0024] In the decorative element 10, the linear portion between adjacent connection points C1 in the circumferential direction in the first winding portion 11, the linear portion between adjacent connection points C2 in the circumferential direction in the second winding portion 12, and the connecting linear portion 19 each form one side of a cube in the decorative element 110.

[0025] In the predetermined plastic processing, the first winding portion 11 is processed to bend the connection points C1 at approximately right angles and to straighten the arc portions between the connection points C1, so that the first winding portion 11 has a square shape with the connection points C1 as corners. The second winding portion 12 is processed to bend the connection points C2 at approximately right angles and to straighten the bent portions B other than the connection points C2, so that the second winding portion 12 has a square shape with the connection points C2 as corners.

[0026] In addition, each connecting linear portion 19 is processed by bending it at approximately a right angle to the first winding portion 11 at connection point C1, bending it at approximately a right angle to the second winding portion 12 at connection point C2, so that the first winding portion 11 and the second winding portion 12 move away from each other, and by straightening out the middle portion of the connecting linear portion 19 other than connection points C1 and C2.

[0027] In the decorative item member 10, the first winding portion 11, the second winding portion 12, and each connecting linear portion 19 form the skeletal portion that defines the external shape of the decorative item 110. In addition to the skeletal portion, the decorative item 110 also has a decorative portion 18 that adds decoration to the skeletal portion. In Figure 2, the decorative portion 18 has a circular planar portion 18a that represents the numbers on the dice, and a supporting linear portion 18b that supports the planar portion 18a. The decorative portion 18 is cantilevered, with only one end connected to another member. Note that the "planar portion" is a portion that does not exhibit a linear shape.

[0028] In the decorative item member 10, some of the support linear portions 18b of the decorative portion 18 extend outward from connection points C3 with the first winding portion 11. A portion of connection point C3 is located in the same location as connection point C1. The remaining support linear portions 18b of the decorative portion 18 extend inward from connection points C4 with the second winding portion 12. Each connection point C4 is located in the same location as connection point C2. In the specified plastic processing, a process is performed to bend the base of each support linear portion 18b at approximately a right angle to the first winding portion 11 or the second winding portion 12.

[0029] Second Embodiment This embodiment is an ornamental item component 20 having a planar shape as shown in Figure 3. By performing a predetermined plastic processing on the ornamental item component 20, an ornamental item 120 as shown in Figure 4 is obtained. The ornamental item 120 has a rugby ball shape. The ornamental item component 20 and other components will be described below.

[0030] The decorative member 20 has linear portions: a first winding portion 21 and a second winding portion 22 that extend linearly around the circumference, and two connecting linear portions 29 that extend linearly and connect the first winding portion 21 and the second winding portion 22. The first winding portion 21 is generally elliptical. The first winding portion 21 has decorative portions 27 in two locations. The second winding portion 22 has a horizontally elongated shape similar to the first winding portion 21 in FIG. 3, and has multiple bent or curved bend portions B. The second winding portion 22 is entirely disposed inside the first winding portion 21.

[0031] Each connecting linear portion 29 is a short straight line. One of the two connecting linear portions 29 connects one longitudinal end of the first winding portion 21 to one longitudinal end of the second winding portion 22, and the other connects the other longitudinal end of the first winding portion 21 to the other longitudinal end of the second winding portion 22.

[0032] Here, in the design step described above, the planar shape of the decorative item component 20 is determined so that by performing the predetermined plastic processing, at least a process of stretching at least a portion of the multiple bent portions B (processing of the second winding portion 22) and a process of twisting the connecting linear portions 29, an decorative item 120 will be obtained in which the surface formed by the first winding portion 21 and the surface formed by the second winding portion 22 intersect. The planar shape of the decorative item component 20 is also determined in the design step so that an decorative item 120 will be obtained in which the second winding portion 22 has a shape that is roughly similar to the first winding portion 21. The decorative item component 20 is then obtained by cutting out a metal plate into the planar shape determined in the design step.

[0033] In the predetermined plastic processing, each connecting linear portion 29 is twisted so that the second winding portion 22 is approximately perpendicular to the first winding portion 21. Then, the second winding portion 22 is processed to extend the bent portion B so that it has a substantially elliptical shape. After processing, the second winding portion 22 has a substantially elliptical shape that is slightly smaller than the first winding portion 21.

[0034] The decorative member 20 also has a plurality of inner winding portions 23 that extend linearly around the inside of the second winding portion 22. The inner winding portions 23 are arranged in a line in the longitudinal direction of the second winding portion 22. Each inner winding portion 23 is connected to the second winding portion 22 by two linear connecting portions 28.

[0035] In the predetermined plastic processing, processing is performed to twist each linear connection portion 28 so that each inner circumferential portion 23 is approximately perpendicular to the second circumferential portion 21, and processing is performed to stretch each inner circumferential portion 23 into a circular shape.

[0036] <Third embodiment> This embodiment is an ornamental item component 30 having a planar shape as shown in Figure 5. By performing a predetermined plastic processing on the ornamental item component 30, a small table can be obtained as an ornamental item 130 as shown in Figure 6. The ornamental item component 30 and other components will be described below.

[0037] The decorative item component 30 has a planar portion 31 that forms the top of the table of the decorative item 130, a surrounding portion 32 that extends linearly around the table to form the legs of the table, and four connecting linear portions 39 that connect the planar portion 31 and the surrounding portion 32. The planar portion 31 and the surrounding portion 32 are each approximately rectangular. Each connecting linear portion 39 connects a corner of the planar portion 31 to a corner of the surrounding portion 32.

[0038] In the design step described above, the planar shape of the decorative item component 30 is determined so that the decorative item 130 can be obtained by at least performing the predetermined plastic processing of bending the circumferential portion 32 and each of the connecting linear portions 39. Then, in the cutting step, the decorative item component 30 is obtained by cutting out the metal plate into the planar shape determined in the design step.

[0039] In this embodiment, notches 35, 36 are provided in the surrounding portion 32 of the decorative member 30 at the locations where bending will occur during a predetermined plastic processing. The surrounding portion 32 has the notch 35 provided on the inside and the notch 36 provided on the outside.

[0040] In the predetermined plastic processing, processing is performed to bend each connecting linear portion 39 at the connection point between the planar portion 31 and the connecting linear portion 39 so that each connecting linear portion 39 extends downward from the planar portion 31, and processing is performed to bend the circumferential portion 32 at each of the notches 35 and 36. In processing the circumferential portion 32, the notch 35 is bent outward, and the notch 36 is bent inward.

[0041] The decorative member 30 has decorative portions 38 that decorate the periphery of the table top and are provided on the outside of each side of the planar portion 31. In the specified plastic processing, each decorative portion 38 is bent at the connection point between the planar portion 31 and the decorative portion 38 so that each decorative portion 38 extends downward from the planar portion 31.

[0042] <Fourth embodiment> This embodiment is an ornamental item component 40 having a planar shape as shown in Figure 7. By performing a predetermined plastic processing on the ornamental item component 40, a unicorn is obtained as an ornamental item 140 as shown in Figure 8. The ornamental item component 40 and other components will be described below.

[0043] The decorative item component 40 has a head 41, neck 42, trunk and leg portions 43, and tail 44, which are arranged in this order in a first direction, which is the front-to-back direction of the decorative item 140. The trunk and leg portions 43 have a back 43a that extends straight in the first direction, and a first side portion 43b and a second side portion 43c that are respectively provided on either side of the back 43a in a second direction that is perpendicular to the first direction. Each side portion 43b, 43c extends to form the front and back legs and the abdomen between the front and back legs.

[0044] The neck portion 42 has a linear portion 42a extending straight in the first direction, and a first front side surface portion 42b and a second front side surface portion 42c provided on either side of the linear portion 42a in the second direction. The linear portion 42a extends straight forward continuously from the back portion 43a.

[0045] In the specified plastic processing, the side portions 43b, 43c of the trunk leg portion 43 are bent at their connection points to the back portion 43a so that the side portions 43b, 43c extend downward from the back portion 43a. The neck portion 42 is bent so that it extends diagonally upward from the front of the trunk leg portion 43, and the front side portions 42b, 42c are bent at their connection points to the linear portion 42a so that the front side portions 42b, 42c extend diagonally downward from the linear portion 42a. The linear portion of the trunk leg portion 43 is also bent at its base so that the tail portion 44 approaches the trunk leg portion 43.

[0046] Fifth Embodiment This embodiment is an ornamental item component 50 having a planar shape as shown in Fig. 9. By performing a predetermined plastic processing on the ornamental item component 50, a chess piece is obtained as an ornament 150 as shown in Fig. 10. The ornamental item component 50 and the like will be described below.

[0047] The decorative member 50 has a circumferential portion 51 that extends linearly around the periphery, a plurality of first pattern portions 52 that are connected to the circumferential portion 51 and aligned in the circumferential direction of the circumferential portion 51, and a plurality of second pattern portions 53 that are connected to the circumferential portion 51 and aligned in the circumferential direction of the circumferential portion 51. In the circumferential portion 51, the plurality of first pattern portions 52 are connected at equal angular intervals in the circumferential direction of the circumferential portion 51, and the plurality of second pattern portions 53 are also connected at equal angular intervals. In the circumferential direction of the circumferential portion 51, the first pattern portions 52 and the second pattern portions 53 are connected alternately. Note that the pattern portions 52, 53 are portions that have frame-shaped portions whose outer peripheries are formed by linear portions.

[0048] The decorative member 50 has a plurality of second pattern portions 53 arranged in a line in the circumferential direction, as well as a plurality of connecting linear portions 59 connecting adjacent second pattern portions 53. Each connecting linear portion 59 is arranged outside the circumferential portion 51. The connecting linear portions 59 are arranged so as to have a substantially octagonal shape along an annular imaginary line coaxial with the circumferential portion 51.

[0049] In the design step, the planar shape of the decorative item member 50 is determined so that the predetermined plastic processing at least involves bending the first pattern portion 52 and the second pattern portion 53 in opposite directions at the connection points with the circumferential portion 51, thereby obtaining an decorative item 150 in which at least a portion of the region consisting of the plurality of first pattern portions 52 and the plurality of second pattern portions 53 exhibits a tubular shape. The planar shape of the decorative item member 50 is also determined in the design step so that the predetermined plastic processing at least involves bending the ends of the connecting linear portions 59 at the connection points with each pattern portion 52, 53, and bending the connecting linear portions 59 so as to fold back at the center, thereby obtaining an decorative item 150 in which the connection points with the connecting linear portions 59 of adjacent second pattern portions 53 are close to each other. Then, in the cutting step, the decorative item member 50 is obtained by cutting out the metal plate into the planar shape determined in the design step.

[0050] In the predetermined plastic processing, the above-mentioned cylindrical portion is formed by processing to bend each first pattern portion 52 downward and processing to bend each second pattern portion 53 upward. Furthermore, processing is performed on each second pattern portion 53 to bend the upper portion inward and the upper end portion upward.

[0051] 10(B), the predetermined plastic processing involves bending each connecting linear portion 59 into a generally V-shape with a small included angle. Specifically, this processing involves bending the ends of the connecting linear portions 59 at the connection points with each pattern portion 52, 53, and also bending the connecting linear portions 59 so that they fold back at the center. By processing each connecting linear portion 59, the decorative item 150 is prevented from opening outwardly with each second pattern portion 53.

[0052] Sixth Embodiment This embodiment is an ornamental item component 60 having a planar shape as shown in Figure 11. By subjecting the ornamental item component 60 to a predetermined plastic processing, an ornamental item 160 as shown in Figure 12 is obtained. The ornamental item 160 has a star shape. The ornamental item component 60 and other components will be described below.

[0053] The decorative member 60 has a plurality of pattern portions 61 arranged in a circumferential direction and a plurality of connecting linear portions 69 connecting adjacent pattern portions 61. The connecting linear portions 69 are arranged along a circular imaginary line. The pattern portions 61 extend radially from the circular portion formed by the connecting linear portions 69. The pattern portion 61 is a portion having a plurality of planar portions 61a, 61b.

[0054] The inner end of each pattern portion 61 is connected to the connecting linear portion 69. A slit 61c extending from the inner end to the outer end is formed in the pattern portion 61. The pattern portion 61 is composed of two triangular portions 61a, 61b formed symmetrically with the slit 61c in between. Each triangular portion 61a, 61b has an apex angle when the slit 61c side is the base. Adjacent pattern portions 61 are connected to each other at the apex angle.

[0055] Here, in the design step described above, the planar shape of the decorative item member 60 is determined so that by at least performing the predetermined plastic processing steps of bending each end of the connecting linear portions 69 at the connection points with the pattern portions 61 and bending the connecting linear portions 69 so as to fold back at the center, an decorative item 160 is obtained in which adjacent pattern portions 61 are close to each other at their connection points with the connecting linear portions 69. Also in the design step, the planar shape of the decorative item member 60 is determined so that by performing the predetermined plastic processing step of mountain-folding each pattern portion 61 at the position of the slits 61c, a star-shaped decorative item 160 in which each pattern portion 61 is three-dimensionally processed is obtained. Then, in the cutting step, the metal plate is cut out into the planar shape determined in the design step, and the decorative item member 60 is obtained.

[0056] 12(B) shows the connecting line portion 69 after processing. Inside the adjacent pattern portions 61, the connecting line portion 69 extends downward from the connection point with one pattern portion 61, turns back upward in the middle, and reaches the connection point with the other pattern portion 61.

[0057] Seventh Embodiment This embodiment is an ornamental item component 70 having a planar shape as shown in Figure 13. By subjecting the ornamental item component 70 to a predetermined plastic processing, an ornamental item 170 as shown in Figure 14 is obtained. The ornamental item 170 has the shape of a motorcycle. The ornamental item component 70 and other components will be described below.

[0058] The decorative item member 70 has an extending portion 71 extending in a first direction and a pair of side surface constituent portions 72 provided contiguous to the extending portion 71 on either side of the extending portion 71 in a second direction perpendicular to the first direction. Each side surface constituent portion 72 forms a side surface of the decorative item 170. In the decorative item member 70, each side surface constituent portion 72 has an inner constituent portion 73 and an outer constituent portion 74 provided at different positions in the first direction, with the inner constituent portion 73 and the outer constituent portion 74 separated by a gap. A slit 75 extends from the outside to the inside between the inner constituent portion 73 and the outer constituent portion 74.

[0059] The decorative item component 70 further includes a tire portion T, a handle portion H, a muffler portion M, and a front cowl portion C. The extension portion 71 extends rearward in the first direction from the handle portion H and includes a tank portion 71a and a seat portion 71b. In this embodiment, the front-to-rear direction of the decorative item component 70 is defined to correspond to the front and rear of the decorative item 170. This front-to-rear direction coincides with the first direction.

[0060] Here, in the above-mentioned design step, the planar shape of the decorative element 70 is determined so that a decorative element 170 is obtained in which the outer component 72b is positioned outside (overlaps) the inner component 72a when viewed from the side, by performing at least two predetermined plastic processes: a process of bending the side component 72 relative to the extension 71 so that the inner component 72a side is bent more than the outer component 72b side, and a process of bending the extension 71 in a Z-shape in the thickness direction of the metal plate (the thickness direction of the paper in Figure 13).

[0061] 14, a dashed line A with two bending points is drawn along the Z-shaped portion of the extension 71. In addition to this Z-shaped processing, the base portion of the inner component 72a (the connection point with the seat portion 71b) is bent more than the base portion of the outer component 72b (the connection point with the tank portion 71a), so that the inner component 72a, which was located behind the outer component 72b in the decorative component 70, is now located just outside the inner component 72a in the decorative component 170.

[0062] <Effects of the embodiment of the present invention> According to the first to seventh embodiments, a variety of decorative items can be obtained from a single decorative item component, depending on how the planar shape of the decorative item component is determined. This provides a method for manufacturing decorative items that allows for the creation of a variety of decorative items without the need for welding.

[0063] [Other embodiments] In the above-described embodiment, a fastener separate from the decorative article may be attached in order to maintain the shape of the decorative article after plastic working.

[0064] In the above-described embodiment, the linear portion may be twisted as appropriate. [Industrial Applicability]

[0065] The present invention is applicable to decorative articles and the like having a three-dimensional shape made of metal materials.

[0066] In this embodiment, of all the linear portions included in the decorative component, the thickness of the linear portion having a relatively large bending portion during plastic working may be made thinner than the other linear portions. [Explanation of symbols]

[0067] 10 Decorative materials 11 First lap 12 2nd lap section 19 Connecting wire part 20 Decorative materials 21 First Lap 22 2nd lap section 29 Connecting wire part 30 Decorative materials 31 Planar part 32 Orbital Club 39 Connecting wire part 40 Decorative materials 43b Side part 50 Decorative materials 51 Lap Club 52 First pattern section 53 Second pattern section 59 Connecting wire part 60 Decorative materials 61 Pattern section 69 Connecting wire 70 Decorative materials 71 Stretching section 72 Side component 73 Inner component 74 Outer components 110 Decorations 120 Decorations 130 Decorations 140 Decorations 150 Decorations 160 Decorations 170 Decorations

Claims

1. A method for manufacturing a decorative component that is the basis of a decorative item, comprising: The decorative component is a continuous component cut out from a metal plate into a predetermined planar shape, and has a plurality of linear portions cut out into lines each having a thickness of 3 mm or less; a design step of determining the planar shape of the decorative element member so that an decorative element having a predetermined three-dimensional shape can be obtained by subjecting the decorative element member to predetermined plastic processing, including processing in which at least a portion of the plurality of linear portions is bent or twisted; a cutting step of cutting out the metal plate into the planar shape determined by the design step; The decorative member has a first winding portion and a second winding portion that extend linearly around the entire circumference, and a connecting linear portion that connects the first winding portion and the second winding portion, In the decorative component, the second winding portion has a plurality of bent or curved portions and is disposed inside the first winding portion, In the design step, the plastic processing involves at least processing to stretch at least a portion of the multiple bent portions and processing the connecting linear portion, thereby determining the planar shape of the decorative component so that the decorative component is obtained in which the surface formed by the first circumferential portion and the surface formed by the second circumferential portion face each other or intersect.

2. 2. The method of manufacturing a decorative element according to claim 1, wherein the planar shape of the decorative element is determined in the design step so as to obtain a decorative element in which the second winding portion has a shape that is approximately similar to that of the first winding portion.

3. A method for manufacturing a decorative component that is the basis of a decorative item, comprising: The decorative component is a continuous component cut out from a metal plate into a predetermined planar shape, and has a plurality of linear portions cut out into lines each having a thickness of 3 mm or less; a design step of determining the planar shape of the decorative element member so that an decorative element having a predetermined three-dimensional shape can be obtained by subjecting the decorative element member to predetermined plastic processing, including processing in which at least a portion of the plurality of linear portions is bent or twisted; a cutting step of cutting out the metal plate into the planar shape determined by the design step; The decorative member has a circumferential portion extending linearly around the circumference, a plurality of first pattern portions connected to the circumferential portion and arranged in the circumferential direction of the circumferential portion, and a plurality of second pattern portions connected to the circumferential portion and arranged in the circumferential direction of the circumferential portion, In the design step, the plastic processing involves at least bending the first pattern portion and the second pattern portion in opposite directions at the connection point with the circumferential portion, thereby determining the planar shape of the decorative component so as to obtain the decorative component in which at least a portion of the portion consisting of the plurality of first pattern portions and the plurality of second pattern portions exhibits a tubular portion.

4. A method for manufacturing a decorative component that is the basis of a decorative item, comprising: The decorative component is a continuous component cut out from a metal plate into a predetermined planar shape, and has a plurality of linear portions cut out into lines each having a thickness of 3 mm or less; a design step of determining the planar shape of the decorative element member so that an decorative element having a predetermined three-dimensional shape can be obtained by subjecting the decorative element member to predetermined plastic processing, including processing in which at least a portion of the plurality of linear portions is bent or twisted; a cutting step of cutting out the metal plate into the planar shape determined by the design step; The decorative member has a plurality of pattern portions arranged in a circumferential direction and a plurality of connecting linear portions connecting adjacent pattern portions, In the design step, the plastic processing involves at least bending the ends of the connecting linear portions at the connection points with each of the pattern portions and bending the connecting linear portions so as to fold them back at the center, thereby determining the planar shape of the decorative member so that the decorative member is obtained in which each of the adjacent pattern portions is close to each other at the connection points with the connecting linear portions.

5. A method for manufacturing a decorative component that is the basis of a decorative item, comprising: The decorative component is a continuous component cut out from a metal plate into a predetermined planar shape, and has a plurality of linear portions cut out into lines each having a thickness of 3 mm or less; a design step of determining the planar shape of the decorative element member so that an decorative element having a predetermined three-dimensional shape can be obtained by subjecting the decorative element member to predetermined plastic processing, including processing in which at least a portion of the plurality of linear portions is bent or twisted; a cutting step of cutting out the metal plate into the planar shape determined by the design step; The decorative component has an extending portion extending in a first direction, and a side surface forming portion provided contiguous with the extending portion on one side in a second direction perpendicular to the first direction, the side surface forming portion forming a side surface of the decorative component, In the decorative component, the side surface constituent portion has an inner constituent portion and an outer constituent portion that are provided at different positions in the first direction, and the inner constituent portion and the outer constituent portion are separated by a gap, In the design step, the plastic processing involves at least bending the side component relative to the extension so that the inner component is bent more than the outer component, and bending the extension in a Z-shape in the thickness direction of the metal plate, thereby determining the planar shape of the decorative component so that the decorative component is obtained in which the outer component is located outside the inner component when viewed from the side.

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