Clothing

Abstract

To provide an accessory that can stably generate a motion of small oscillation of a hanger member relative to a frame member and suppress product defects.SOLUTION: An accessory includes: a frame member; and a hanger member hung from the frame member. The frame member includes a metallic press working product formed by integrating a frame body part and a pair of right and left holding ring parts for hanging and holding the hanger member together. The hanger member includes at least: a pedestal part to which a gem is fixed; and a pair of right and left oscillation ring parts arranged on right and left lateral sides of the pedestal part and engaging the pair of right and left holding ring parts. The pair of right and left holding ring parts and the pair of right and left oscillation ring parts are formed into an annular shape. The hanger member is hung from the frame member so as to be capable of oscillating such that inner peripheral parts of the pair of right and left oscillation ring parts are hooked to inner peripheral parts of the holding ring parts corresponding the inner peripheral parts of the pair of right and left oscillation ring parts.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to jewelry. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2015-54162 (Patent Document 1) describes an ornament (pendant top) having a frame member and a hanger member that is swingably suspended from the frame member. In this patent document, the frame member of the ornament has a frame main body and left and right retaining rings fixed to the back surface of the frame main body. The hanger member has a base to which a gemstone is secured, left and right extensions extending from the base, and left and right swinging rings provided at the tips of the left and right extensions. The hanger member is swingably suspended from the frame member by hooking the inner peripheries of the left and right swinging rings onto the inner peripheries of the corresponding retaining rings.

[0003] In the accessory of Patent Document 1, the movement of the accessory causes the hanger member to swing slightly relative to the frame member. This repeated slight swinging of the hanger member makes the gemstone fixed to the base of the hanger member shine more beautifully. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-54162 Summary of the Invention [Problem to be solved by the invention]

[0005] In accessories in which a hanger member is minutely swung relative to a frame member, it is required that the small swinging motion of the hanger member be stable and that the occurrence of defective products be suppressed.

[0006] An object of the present disclosure is to provide a clothing accessory that can stably cause a small swinging movement of a hanger member relative to a frame member and can suppress the occurrence of product defects. [Means for solving the problem]

[0007] The jewelry according to the present disclosure includes the following aspects. The accessory according to the present disclosure is an accessory having a frame member and a hanger member suspended from the frame member, wherein the frame member has a metal pressed product in which a frame main body and a pair of left and right retaining ring portions for suspending and holding the hanger member are integrally formed, the press-formed product has a pair of left and right support arms that connect the frame main body and the retaining ring, The hanger member has at least a base portion for fixing the jewel, and a pair of left and right oscillating ring portions arranged on the left and right sides of the base portion and engaging with the pair of retaining ring portions, the pair of retaining ring portions and the pair of oscillating ring portions being formed in an annular shape, and the hanger member is an ornament that is oscillatably suspended from the frame member by hooking the inner peripheries of the left and right oscillating ring portions onto the inner peripheries of the corresponding retaining ring portions.

[0008] In the accessory of the present disclosure, it is preferable that the retaining ring portion has a tapered shape that narrows radially inward of the retaining ring portion when viewed in a cross section perpendicular to the circumferential direction of the retaining ring portion, and that the oscillating ring portion has a tapered shape that narrows radially inward of the oscillating ring portion when viewed in a cross section perpendicular to the circumferential direction of the oscillating ring portion.

[0009] Also in this disclosure ,before It is preferable that the frame main body portion has a frame-like shape with an open center when viewed from the front of the frame member, and that the support arm portion extends from the frame main body portion in a direction perpendicular to the circumferential direction of the frame main body portion.

[0010] Furthermore, it is preferable that the support arm portion is formed with a constant thickness from the frame main body portion to the retaining ring portion, the length dimension of the support arm portion from the frame main body portion to the retaining ring portion is greater than the thickness dimension of the support arm portion and smaller than the inner diameter dimension of the retaining ring portion, and the width dimension of the support arm portion is greater than the length dimension of the support arm portion and smaller than the outer diameter dimension of the retaining ring portion.

[0011] Furthermore, it is preferable that the thickness dimension of the support arm portion is 0.15 mm or more and 0.35 mm or less, the length dimension of the support arm portion from the frame main body portion to the retaining ring portion is 0.10 mm or more and 0.50 mm or less, and the width dimension of the support arm portion is 0.30 mm or more and 1.20 mm or less. [Effects of the Invention]

[0012] According to the present disclosure, an accessory is provided that can stably cause a small swinging movement of the hanger member relative to the frame member and can also suppress the occurrence of product defects. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a front view schematically illustrating an accessory according to an embodiment of the present disclosure. [Figure 2] 1 is a side view schematically illustrating an accessory according to an embodiment of the present disclosure. [Figure 3] FIG. 2 is a front view schematically showing the state (primary processed product) of the frame member of the accessory immediately after press molding. [Figure 4] FIG. 4 is a schematic cross-sectional view taken along line IV-IV shown in FIG. [Figure 5] FIG. 10 is a rear view schematically showing the state before the jewel is fixed to the hanger member of the accessory. [Figure 6] FIG. 6 is a schematic cross-sectional view taken along line VI-VI shown in FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0014] In conventional accessories such as those described in Patent Document 1, the frame members are generally manufactured using the lost-wax method, in which a mold is formed from a wax model and molten metal is poured into the mold for casting. Casting using this lost-wax method (hereinafter abbreviated as lost-wax casting) makes it possible to integrally cast a three-dimensional shape using a single mold, thereby enabling the stable production of frame members with complex shapes that include a frame main body and left and right retaining rings.

[0015] On the other hand, when producing a frame member using lost-wax casting, the original model must be made of wax, and molten metal must be poured into every corner of the space inside the mold formed by melting the wax, making it difficult to form sharply pointed portions or shapes in the frame member, which is an extremely small part.For this reason, when a frame member is produced by lost-wax casting, for example, the inner peripheral portions of the left and right retaining ring portions provided on the frame member have a rounded shape when viewed in a cross section perpendicular to the circumferential direction of the retaining ring portions.

[0016] However, if the inner peripheral portions of the left and right retaining ring portions are rounded, when the hanger member is held swingably on the left and right retaining ring portions of the frame member, problems such as the hanger member's small swinging movement as described above becoming poor, or even the small swinging movement not occurring at all, can occur, and these problems are a major cause of defective products.

[0017] In addition, in order to form the inner peripheries of the left and right retaining ring portions of the frame member into a pointed shape, a method is known in which a jump ring having a pointed inner periphery is first produced as the retaining ring portion by press molding separately from the frame main body portion, and then the two resulting jump rings are fixed to predetermined positions on the frame main body portion by brazing.

[0018] However, when the jump ring is later brazed to the frame body as described above, strength problems can arise at the joint between the jump ring and the frame body. Furthermore, because both the jump ring and the frame body are very small, brazing these components requires years of experience and skill, and the process itself is time-consuming and labor-intensive. This has the drawback of reducing productivity and increasing production costs. Furthermore, brazing is performed manually, which can lead to product defects due to misalignment or misalignment of the jump ring.

[0019] In contrast, in the accessory of the present disclosure, the frame member has a metal pressed product (press-formed body) in which a frame main body and a pair of left and right annular retaining rings that suspend and hold the hanger member are integrally formed. In the present disclosure, the fine pressed product for an accessory in which the frame main body and retaining rings are integrally formed has only been made possible as a result of repeated improvements in press processing technology.

[0020] The hanger member suspended from the frame member described above has at least a base for fixing the jewel and a pair of left and right annular swing rings disposed on the left and right sides of the base and engaging with the pair of retaining rings. The inner peripheries of the left and right swing rings are hooked onto the inner peripheries of the retaining rings, respectively, so that the hanger member is suspended from the frame member in a swingable manner.

[0021] In the jewelry disclosed herein, at least the frame body and the left and right retaining rings of the frame member are formed on a single metal press-molded product, allowing the inner peripheries of the left and right retaining rings to be stably formed into sharply pointed shapes. Therefore, when a hanger member is hung on the left and right retaining rings of the frame member, the contact area between the retaining rings and the swinging rings of the hanger member can be reduced, and frictional resistance between the retaining rings and the swinging rings can be reduced. This allows the hanger member to stably swing slightly (finely) relative to the frame member. Furthermore, because the frame body and the retaining rings of the frame member do not need to be brazed, the manufacturing process of the frame member is not affected by years of experience or skill, resulting in shorter production time, lower production costs, more stable quality, and fewer defective products compared to conventional jewelry.

[0022] In the accessory of the present disclosure, the retaining ring portion may have a tapered shape that narrows toward the inside in the radial direction of the retaining ring portion when viewed in a cross section perpendicular to the circumferential direction of the retaining ring portion. Furthermore, the swinging ring portion may have a tapered shape that narrows toward the inside in the radial direction of the swinging ring portion when viewed in a cross section perpendicular to the circumferential direction of the swinging ring portion. This allows the hanger member to more stably swing slightly relative to the frame member. Furthermore, the hanger member's small swinging motion can be sustained for a longer period of time.

[0023] In the jewelry disclosed herein, the press-formed frame member may have a pair of left and right support arms connecting the frame main body and the retaining ring. For example, after a primary frame member is produced by press molding, the support arms can be deformed when the primary frame member is bent to form the retaining ring in the required orientation (posture). This allows the frame member to be produced stably without causing distortion in the retaining ring formed into the predetermined annular shape by press molding. Furthermore, providing the support arms on the frame member makes it less likely for the hanger member to come into contact with the frame main body when the hanger member swings slightly, thereby preventing contact between the hanger member and the frame main body from interfering with the small swinging motion of the hanger member.

[0024] In the accessory of the present disclosure, the frame main body may have a frame-like shape with an open center when viewed from the front of the frame member, and the support arms may extend from the frame main body in a direction perpendicular to the circumferential direction of the frame main body. By hanging a hanger member from the left and right support arms of such a frame member, a small swinging motion of the hanger member can be stably generated.

[0025] In the accessory of the present disclosure, the support arm portion may be formed with a constant thickness from the frame main body portion to the retaining ring portion. The length of the support arm portion from the frame main body portion to the retaining ring portion may be greater than the thickness of the support arm portion and smaller than the inner diameter of the retaining ring portion. The width of the support arm portion may be greater than the length of the support arm portion and smaller than the outer diameter of the retaining ring portion. The thickness of the support arm portion may be 0.15 mm or more and 0.35 mm or less. The length of the support arm portion from the frame main body portion to the retaining ring portion may be 0.10 mm or more and 0.50 mm or less. The width of the support arm portion may be 0.30 mm or more and 1.20 mm or less. By forming the support arm portion in this manner, the frame member can be stably manufactured without causing distortion in the retaining ring portion. Furthermore, it is possible to make it less likely for the hanger member to come into contact with the frame main body portion when the hanger member swings slightly.

[0026] In the jewelry of the present disclosure, the support arm extends from the upper half of the inner periphery of the frame body. Furthermore, in a front view of the frame member, the retaining ring has a lower end on which the swinging ring is hooked and an upper end located opposite the lower end. The pair of retaining rings may be arranged symmetrically and tilted relative to the vertical direction so that the distance between the upper ends of the left and right retaining rings is narrower than the distance between the lower ends of the left and right retaining rings. This makes it easier to ensure a large distance between the lower ends of the left and right retaining rings on which the swinging ring is hooked, even when the support arm is provided on the inner periphery of the frame body. This makes it easier to form a larger hanger member, allowing larger jewels to swing more tightly relative to the frame member.

[0027] Hereinafter, an example of a preferred embodiment of the accessory according to the present disclosure will be described with reference to an example. Note that the present disclosure is not limited to the example described below, and various modifications are possible as long as they have substantially the same configuration as the accessory of the present disclosure and provide similar effects.

[0028] In this disclosure, "accessories" refers to articles worn for decorative purposes. Accessories include necklaces (pendants), earrings, pierced earrings, brooches, tie clips, tiny pins, rings, bracelets, anklets, and other accessories. In this disclosure, necklace is a general term for neck ornaments, including so-called pendants.

[0029] In this disclosure, "gems" include natural gems, synthetic gems, artificial gems, and imitation gems, and are preferably gems that shine when light penetrates into them. Natural gemstones include naturally occurring gemstones such as diamonds, rubies, sapphires, and quartz. Natural gemstones also include treated gemstones that have been enhanced or altered. Synthetic gemstones are gemstones that have the same or similar chemical properties, physical properties, and internal structure as natural gemstones and are artificially created. Synthetic gemstones are also called artificial gemstones. Artificial gemstones are gemstones that do not exist in nature but have certain chemical and physical properties and internal structure, and are created using substances that are different from natural gemstones, such as cubic zirconia (CZ) and yttrium-acid (YAG). Imitation gemstones are gemstones that have the same color and appearance as natural gemstones, but have different chemical properties and physical structure, and are made from materials such as glass, plastic, and ceramics to imitate natural gemstones. In this disclosure, the term "setting" refers to the part of the jewelry on which the jewel is set or placed.

[0030] In this disclosure, "press processing" refers to a process for mechanically forming a processed product having a desired shape by applying a strong force to an object using a mold. Press processing includes at least shear processing, and may also include deformation processing (processing including bending, drawing, compression, etc.) in addition to shear processing.

[0031] In this disclosure, the terms "integrally" and "integrally formed" mean that an object having a desired shape is formed from a single continuous member, and are concepts that do not include, for example, the formation of an object by combining multiple members that are formed separately.

[0032] In this disclosure, the front side of the jewelry refers to the side on which the front surface (for example, the table surface) of the jewel used in the jewelry is placed, and the back side refers to the side opposite to the front side.

[0033] In the following description, the front of the accessory will be referred to as the first side, and the back side as the second side. The up-down and left-right directions of the accessory refer to the up-down and left-right directions when the accessory is worn in the correct posture and viewed from the front. The front-to-back direction refers to the direction perpendicular to the up-down and left-to-right directions, and is the direction from the front to the back (or from the back to the front). In this case, the direction from the back to the front is referred to as the front, and the direction from the front to the back is referred to as the back. Furthermore, the inside of the accessory refers to the direction approaching the center position of the main body member in the up-down, left-to-right, front-to-back, etc. directions, and the outside of the accessory refers to the direction away from the center position of the main body member in the up-down, left-to-right, front-to-back, etc. directions.

[0034] Hereinafter, a preferred example (embodiment) of the ornament according to the embodiment of the present disclosure will be described in the case where the ornament is a necklace. Note that the ornament according to the present disclosure may be an earring, a pierced earring, a brooch, a necktie clip, a tiny pin, a ring, a bracelet, an anklet, etc., instead of a necklace. [Example]

[0035] 1 and 2 are a front view and a side view, respectively, that schematically show an example of an accessory (necklace) according to this embodiment. The necklace 1 shown in FIGS. 1 and 2 comprises a chain 5 which is a string-like member, and a pendant top 10 which is the main body of the accessory, and the pendant top 10 is suspended from the chain 5.

[0036] The pendant top 10 has a hanger member 20 to which a diamond is fixedly held as a gemstone 21, and a frame member 30 that supports the hanger member 20 in a suspended state. The hanger member 20 has a jewel 21, a base portion 22 on which the jewel 21 is placed, four claw portions 23 that protrude from the base portion 22 and secure the jewel 21 in place, left and right extension portions 24 that extend outward in the left and right directions from the left and right side edges (side ends) of the base portion 22, and left and right oscillating ring portions 25 that are provided at the tips of the left and right extension portions 24.

[0037] The frame member 30, in a front view of the pendant top (body of jewelry) 10, has a frame main body 31 arranged to surround the jewel 21 fixed to the hanger member 20, left and right support arm portions 32 extending rearward from the frame main body 31, and left and right retaining ring portions 33 arranged at the tips of the support arm portions 32. The frame member 30 also has a chain connecting portion 34 to which the chain 5 is connected, and a connecting portion 35 to which other ornaments can be connected and joined to the frame member 30.

[0038] In the frame member 30 of this embodiment, the above-mentioned frame main body 31, left and right support arm portions 32, left and right retaining ring portions 33, chain linking portion 34, and connecting portion 35 are integrally formed. In other words, the frame member 30 of this embodiment is a single pressed product formed by pressing a single plate material (metal plate) made of a precious metal such as gold, platinum, or silver, and is formed from a single metal material.

[0039] In the present disclosure, it is sufficient that at least the frame main body portion 31, the left and right support arm portions 32, and the left and right retaining ring portions 33 of the frame member 30 are integrally formed, and the chain connection portion 34 and the connection portion 35 may be fixed to the frame main body portion 31 by brazing (welding) using, for example, a laser or the like.

[0040] The frame main body 31 has an annular or donut-like shape when viewed from the front of the pendant top 10 (FIG. 1). The frame main body 31 surrounds the entire base 22 and the gem (diamond) 21 of the hanger member 20 from the outside, and is disposed spaced apart from the base 22 and the gem 21 on the outside. Therefore, a gap is formed between the frame main body 31 and the base 22 and the gem 21. Note that in the present disclosure, the frame main body 31 may be formed in a frame shape other than an annular shape, such as a rectangular frame, as long as it surrounds the entire base 22 and the gem 21 of the hanger member 20 from the outside and is disposed spaced apart from the base 22 and the gem 21 on the outside.

[0041] The frame main body 31 of this embodiment is formed with a constant thickness. For example, in this embodiment, the thickness of the frame main body 31 is set to be 0.15 mm or more and 0.35 mm or less. Furthermore, the cross section of the frame main body 31 perpendicular to the circumferential direction of the frame main body 31 has a substantially U-shaped or substantially J-shaped shape around the entire circumference of the frame main body 31. That is, in this frame main body 31, the radial center of the frame main body 31 is located at the frontmost side, and when viewed from the rear side (not shown), the concave groove forms a circumference. Furthermore, in this embodiment, the inner peripheral portion 31a of the frame main body 31 is located forward of the outer peripheral portion 31b of the frame main body 31.

[0042] The left and right support arm portions 32 extend from the inner peripheral portion 31a of the annular frame main body portion 31 in a direction (rearward) perpendicular to the circumferential direction of the frame main body portion 31, and these support arm portions 32 connect the frame main body portion 31 and the retaining ring portion 33. By providing the left and right support arm portions 32 in this manner, the frame member 30 of this embodiment can be stably manufactured using press working including shearing.

[0043] In this case, as will be described later, immediately after the frame member 30 is produced by press processing including shearing (see Figure 3), the support arm portion 32 extends from the frame main body portion 31 in a direction perpendicular to the front-to-rear direction (in other words, the thickness direction of the frame main body portion 31), and is further bent from a direction perpendicular to the front-to-rear direction to a direction along the front-to-rear direction by deformation processing (bending processing) performed after the press processing.

[0044] In this embodiment, the support arm portion 32 is formed with a constant thickness from the frame main body portion 31 to the retaining ring portion 33. The thickness of this support arm portion 32 is the same as the thickness of the frame main body portion 31. Specifically, the thickness of the support arm portion 32 is set to be 0.15 mm or more and 0.35 mm or less. By setting the thickness of the support arm portion 32 to be 0.15 mm or more, appropriate strength of the support arm portion 32 can be stably ensured. By setting the thickness of the support arm portion 32 to be 0.35 mm or less, the support arm portion 32 can be stably deformed in the deformation processing after the above-mentioned press processing. Furthermore, the weight of the frame member 30 can be reduced.

[0045] The length of the support arm 32 from the frame main body 31 to the retaining ring 33 is set to be greater than the thickness of the support arm 32 and smaller than the inner diameter Ri of the retaining ring 33. Specifically, the length of the support arm 32 is set to be 0.10 mm or more and 0.50 mm or less.

[0046] By setting the length of the support arm portion 32 to 0.10 mm or more, only the support arm portion 32 can be stably deformed in the deformation process after the above-mentioned press working, thereby preventing the deformation from distorting the annular shape of the retaining ring portion 33. Furthermore, when the hanger member 20 of the pendant top 10 swings relative to the frame member 30, the frame main body portion 31 and the retaining ring portion 33 are appropriately spaced apart by the support arm portion 32, which makes it difficult for the swinging ring portion 25 of the hanger member 20 to come into contact (collide) with the frame main body portion 31, making it easier to maintain the swinging action of the hanger member 20 for a long time.

[0047] Furthermore, by setting the length dimension of the support arm portion 32 to 0.50 mm or less, the position of the hanger member 20 can be prevented from being too far back relative to the frame member 30. This makes it possible to make the jewel 21 fixed to the hanger member 20 appear larger and more easily seen from the front side of the pendant top 10. It also prevents the hanger member 20 from coming into contact with the user's chest when the user wears the necklace 1. The length dimension of the support arm portion 32 refers to the dimension of the shortest line segment along the support arm portion 32 from the end of the support arm portion 32 where it is connected to the frame main body portion 31 to the end of the support arm portion 32 where it is connected to the retaining ring portion 33.

[0048] The width dimension of the support arm portion 32 is set to be larger than the length dimension of the support arm portion 32 and smaller than the outer diameter Re of the retaining ring portion 33. In this disclosure, the width dimension of the support arm portion 32 refers to the dimension in a direction perpendicular to the thickness direction and length direction of the support arm portion 32. Specifically, the width dimension of the support arm portion 32 is set to be 0.30 mm or more and 1.20 mm or less. By setting the width dimension of the support arm portion 32 to be 0.30 mm or more, appropriate strength of the support arm portion 32 can be stably ensured. By setting the width dimension of the support arm portion 32 to be 1.20 mm or less, the support arm portion 32 can be stably deformed in the deformation processing after the above-mentioned press processing. Furthermore, the weight of the frame member 30 can be reduced.

[0049] Furthermore, in a front view of the frame member 30 seen from the front side (FIG. 1), the left and right support arm portions 32 are arranged in the upper half (upper half) of the frame main body portion 31. More specifically, for example, if the jewel 21 is placed at the center of the analog clock and the upward direction from the jewel 21 is the 12 o'clock direction, the right support arm portion 32 is arranged within the range from the 1 o'clock direction to the 3 o'clock direction of the frame main body portion 31, and the left support arm portion 32 is arranged within the range from the 9 o'clock direction to the 11 o'clock direction of the frame main body portion 31. As a result, even if the left and right support arm portions 32 are provided on the inner peripheral portion 31a of the frame main body portion 31 so as to be manufactured by press working, when the hanger member 20 is hung from the left and right retaining ring portions 33, the jewel 21 fixed to the hanger member 20 can be stably arranged in the center of the annular frame main body portion 31 in a front view of the pendant top 10.

[0050] The left and right retaining ring portions 33 are integrally formed at the tip end of the support arm portion 32. Each retaining ring portion 33 is formed in an annular or ring shape. A circular central opening 33a is formed in the center of each retaining ring portion 33 so that the swing ring portion 25 of the hanger member 20 can be hooked onto the inner periphery of the retaining ring portion 33 in the left-right direction or approximately in the left-right direction. In this case, the inner diameter Ri of the retaining ring portion 33 (i.e., the diameter of the central opening 33a) is set to be 0.40 mm or more and 1.00 mm or less. The outer diameter Re of the retaining ring portion 33 is set to be 1.00 mm or more and 1.80 mm or less (see FIG. 3).

[0051] Each of the left and right retaining ring portions 33 has a slit 33b into which the swinging ring portion 25 can be inserted before the retaining ring portions 33 are connected (see FIG. 3). After a portion of the swinging ring portion 25 is inserted inside the retaining ring portion 33, the retaining ring portion 33 having such a slit 33b is pressed and plastically deformed so that the slit 33b disappears, whereby the retaining ring portion 33 is formed into a continuous ring shape that can hold the swinging ring portion 25 so that it does not come off the retaining ring portion 33.

[0052] As shown in FIG. 4, the cross-section of each of the left and right retaining ring portions 33 perpendicular to the circumferential direction of the retaining ring portion 33 has a tapered shape that gradually narrows toward the inner peripheral edge so that the tip of the inner peripheral side of the retaining ring portion 33 is pointed. This tapered shape of the inner peripheral edge of the retaining ring portion 33 can be reliably obtained by forming the retaining ring portion 33 by press working. Furthermore, forming the retaining ring portion 33 by press working can increase the strength of the retaining ring portion 33 compared to, for example, conventional formation by lost-wax casting. In this embodiment, the maximum thickness dimension (dimension perpendicular to the circumferential direction and the radial direction) of the retaining ring portion 33 is preferably 0.15 mm or more and 0.35 mm or less. This ensures the retaining ring portion 33 has adequate strength to stably support the hanger member 20 and also reduces the weight of the frame member 30.

[0053] Furthermore, in a front view of the frame member 30 ( FIG. 1 ), the left and right retaining ring portions 33 have lower end portions 33c to which the swing ring portion 25 is hooked, and upper end portions 33d disposed on the opposite side of the lower end portions 33c. In this case, the pair of left and right retaining ring portions 33 are disposed symmetrically and tilted relative to the vertical direction so that the left-right distance between the upper end portions 33d of the left and right retaining ring portions 33 is narrower than the left-right distance between the lower end portions 33c of the left and right retaining ring portions 33. In this case, it is preferable that the left and right retaining ring portions 33 are tilted relative to the vertical direction so that an inclination angle α of 20° or more is secured, as shown in FIG. 1 , for example.

[0054] This makes it easier to ensure a large gap between the lower ends 33c of the left and right retaining ring portions 33, even when the left and right support arm portions 32 are provided on the inner peripheral portion 31a of the frame main body portion 31 in order to press-form the frame member 30, and makes it easier to form the hanger member 20 large (especially large in the left-right direction). This makes it possible to fix a larger gemstone 21 to the hanger member 20 relative to the size of the frame member 30. Therefore, the larger gemstone 21 can be swung slightly relative to the frame member 30, making it shine beautifully.

[0055] The connection part 35 of the frame member 30 is provided at the lower end of the frame main body 31 and is formed to protrude downward in an arc shape. The provision of this connection part 35 makes it possible to attach various decorative items, such as pendant tops other than the pendant top 10 of this embodiment, accessories, or key chains with logo marks, below the frame member 30. This increases the variety of products and makes it possible to use it in products created in collaboration with other companies.

[0056] The hanger member 20 of this embodiment is integrally formed as a single pressed product formed by pressing a single plate (metal plate) made of a precious metal such as gold, platinum, or silver. Note that the present disclosure does not limit the material or manufacturing method of the hanger member 20. Furthermore, the shapes of the base portion 22 and the claw portions 23, and the number of the claw portions 23, are not limited and can be changed.

[0057] The base 22 of the hanger member 20 places the gem 21 on it and secures it together with the claws 23. The base 22 has a truncated cone-shaped outline and a circular opening in its center. The gem 21 is secured to the base 22 with its culet protruding rearward through the opening. In this embodiment, the hanger member 20 has four claws 23 that protrude outward from the outer periphery of the base 22 to secure the gem 21. Before the gem 21 is placed on the base 22, each claw 23 protrudes straight from the base 22, as shown in FIG. 5. After the gem 21 is set on the base 22, each claw 23 is pressed toward the gem 21 and plastically deforms into a curved shape, thereby securing the gem 21 between the base 22 and the claws 23.

[0058] The left and right extension portions 24 of the hanger member 20 are connecting portions that connect the base portion 22 and the left and right swinging ring portions 25. The left and right extension portions 24 extend outward in the left-right direction from the base portion 22 and have bilaterally symmetrical shapes. The length between the base portion 22 and the swinging ring portion 25 of the left and right extension portions 24 can be changed depending on the design of the pendant top 10, etc. In this embodiment, the hanger member 20 can also be formed without the left and right extension portions 24.

[0059] The left and right oscillating ring portions 25 are integrally provided at the tip end of the extension portion 24. Each oscillating ring portion 25 is formed in an annular or ring shape, and a circular central opening 25a is provided in the center thereof. Each oscillating ring portion 25 is supported by the extension portion 24 in a position parallel or approximately parallel to the left-right direction.

[0060] The left and right swinging ring portions 25 are hooked onto and held by the inner peripheral portions of the left and right holding ring portions 33 of the frame member 30. In other words, the left and right swinging ring portions 25 and the left and right holding ring portions 33 are engaged with each other so that they pass through each other's central openings 25a, 33a and their inner peripheral portions come into contact with each other.

[0061] 6, the cross-sectional shape of each of the left and right oscillating ring portions 25 taken perpendicular to the circumferential direction of the oscillating ring portion 25 has a tapered shape that gradually becomes narrower toward the inner peripheral edge so that the tip end on the inner peripheral side of the oscillating ring portion 25 is pointed. In this embodiment, the cross-sectional shape of the retaining ring portion 33 also has a tapered shape that gradually becomes narrower toward the inner peripheral edge, as described above (see FIG. 4).

[0062] This makes it possible to reduce the contact area of ​​the contact portion where the retaining ring portion 33 and the oscillating ring portion 25 come into contact with each other when the oscillating ring portion 25 is hooked onto and held on the inner peripheral portion of the retaining ring portion 33, compared to when the cross section perpendicular to the circumferential direction of the retaining ring portion 33 and / or the oscillating ring portion 25 is circular, for example. In particular, when the inner peripheral portions of the retaining ring portion 33 and the oscillating ring portion 25 are both formed with sharp edges, as in this embodiment, the retaining ring portion 33 and the oscillating ring portion 25 come into contact with each other at a single point, making it possible to extremely reduce the contact area.

[0063] As a result, the support of the swing ring part 25 by the retaining ring part 33 tends to become unstable, which makes it easier to swing the hanger member 20 relative to the frame member 30. Furthermore, since the frictional resistance of the swing ring part 25 relative to the retaining ring part 33 can be reduced, the hanger member 20 can be swung more finely, and the swinging motion of the hanger member 20 can be continued for a longer period of time.

[0064] Furthermore, the sharply tapered shape of the inner peripheries of the retaining ring portion 33 and the swinging ring portion 25 as described above can be reliably obtained by forming the retaining ring portion 33 and the swinging ring portion 25 by press working. Furthermore, by forming them by press working, the strength of the retaining ring portion 33 and the swinging ring portion 25 is increased compared to when they are formed by, for example, conventional lost-wax casting. This allows the inner peripheries of the retaining ring portion 33 and the swinging ring portion 25 to be formed thinner, which further enhances the effect of making the hanger member 20 easier to swing and the effect of continuing the swinging action for a long time.

[0065] The hanger member 20 of this embodiment is held by the frame member 30 so that the central openings 25a formed in the left and right swinging ring portions 25 face forward and backward when the left and right swinging ring portions 25 are hooked onto the left and right holding ring portions 33. The hanger member 20 is also formed so that the table surface of the gem (diamond) 21 fixed to the hanger member 20 faces diagonally upward when the hanger member 20 is held by the frame member 30 (see FIG. 2).

[0066] Next, a method for manufacturing the pendant top 10 of the above-mentioned embodiment will be described.

[0067] The manufacturing method for the pendant top 10 is as follows: (i) a first press working step of producing a primary workpiece 30a of the frame member 30 shown in FIG. 3 by press working a metal plate; (ii) a bending process in which the primary workpiece 30a produced in the first press process is bent so that the support arm portion 32 extends rearward from the frame main body portion 31; (iii) a second press working step of producing the hanger member 20 shown in FIG. 5 by press working a thin flat metal plate; (iv) a stone setting step of setting and fixing a jewel 21 on the base portion 22 of the hanger member 20 produced in the second press working step; (v) an assembly process in which the hanger member 20 is assembled to the frame member 30 to manufacture the pendant top 10; Includes:

[0068] The first press-forming step (i) includes a preparation step (A) of preparing a metal plate, a shearing step (B) of mechanically shearing (punching) the metal plate, and a deformation step (C) of mechanically deforming at least one of the metal plate and a blank member punched from the metal plate by at least one of bending, drawing, and compressing. In the first press-forming step, the order in which the shearing step (B) and the deformation step (C) are performed is not limited, and either the shearing or the deformation may be performed first, or the shearing and the deformation may be performed alternately. Furthermore, performing a shearing (or deformation) on at least one of the metal plate and a blank member formed from the metal plate means performing at least one of the shearing (or deformation) on the metal plate, the shearing (or deformation) on the blank member formed from the metal plate, and the shearing (or deformation) on both the metal plate and the blank member formed from the metal plate.

[0069] In the preparation step (A), a thin, flat metal plate is prepared as the workpiece. The thickness of the prepared metal plate is not particularly limited, but is preferably 0.2 mm or more, particularly 0.25 mm or more, to ensure adequate strength in the frame member 30 produced by press working. Furthermore, the thickness of the metal plate is preferably 0.8 mm or less, particularly 0.5 mm or more, to reduce the weight and cost of the frame member 30.

[0070] The material (metal type) of the metal plate to be prepared is not particularly limited. For example, the material of the metal plate may be selected from the group consisting of silver, gold, platinum, copper, and iron, alloys of these metals (for example, alloys mainly made of gold and 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, etc., alloys mainly made of copper and containing zinc, etc.).

[0071] In the shearing step (B), the metal plate is sheared (e.g., punched) to form a thin blank member. In this shearing step (B), the blank member may be formed by a single shearing process, or may be formed by multiple shearing processes.

[0072] In the deformation step (C), a metal plate and / or a blank member punched out from the metal plate is subjected to deformation processing (for example, drawing processing) to form at least a frame main body portion 31 having a substantially U-shaped or substantially J-shaped cross section perpendicular to the circumferential direction. In this deformation step (C), only one deformation processing may be performed, or multiple deformation processing may be performed in sequence.

[0073] Here, a brief description will be given of an example of a method for producing the primary processed product 30a of the frame member 30 shown in Fig. 3 from the prepared metal plate in the first press processing step (i). Note that in the present disclosure, the method for producing the primary processed product 30a is not limited to this.

[0074] First, a metal plate is subjected to a deformation process (e.g., drawing) to form the shape of the frame main body 31 on the metal plate. Next, the metal plate on which the frame main body 31 has been formed is subjected to a shearing process multiple times to form the shapes of the left and right support arm sections 32 and the left and right retaining ring sections 33 as shown in Fig. 3 inside the frame main body 31, and to form the shapes of the chain linking section 34 and the connecting section 35 outside the frame main body 31. Thereafter, the metal plate on which the shapes of each section have been formed is subjected to a shearing process (e.g., punching), and further subjected to a deformation process to bend the chain linking section 34, thereby producing the primary processed product 30a shown in Fig. 3.

[0075] Next, the produced primary product 30a shown in FIG. 3 is subjected to a bending process (ii). In this bending process, the support arm portions 32 of the primary product 30a are bent backward relative to the frame main body portion 31. This produces the frame member 30 of this embodiment. Because the length of the support arm portions 32 is greater than the thickness of the support arm portions 32, the support arm portions 32 can be smoothly bent backward without distorting the retaining ring portions 33. In the frame member 30 produced in this bending process, the left and right retaining ring portions 33 are provided with slits 33b through which the swing ring portions 25 of the hanger member 20 are inserted. The deformation process for bending the chain connecting portions 34 described above may be performed in this bending process, rather than in the first press process.

[0076] Meanwhile, separate from the first press working step (i), a second press working step (iii) is performed to produce the hanger member 20. This second press working step includes a preparation step of preparing a metal plate, a shearing step of shearing (punching) the metal plate, and a deformation step of performing at least one of bending, drawing, and compressing on at least one of the metal plate and a blank member punched out from the metal plate. Note that, even in this second press working step, the order in which the shearing and deformation steps are performed is not limited, and either the shearing or the deformation step may be performed first, or the shearing and the deformation steps may be performed alternately.

[0077] For example, in this second press working step, a metal plate is subjected to deformation working (e.g., drawing working) to form the outline of the base portion 22, the shapes of the claw portions 23, the shapes of the left and right extension portions 24, and the outlines of the left and right swing ring portions 25 in the metal plate. Next, the metal plate on which the frame main body portion 31 is formed is subjected to shearing working to form the shapes of the base portion 22 and the left and right swing ring portions 25 in the metal plate. Thereafter, the metal plate on which the shapes of the base portion 22, the claw portions 23, the left and right extension portions 24, and the left and right swing ring portions 25 have been formed is subjected to shearing working (e.g., punching working) to produce the hanger member 20 shown in FIG. 5.

[0078] After the second press working step is completed, a stone setting step (iv) is carried out to set and fix the jewel 21 on the base portion 22 of the hanger member 20. In this stone setting step, first, the jewel 21 is set on the base portion 22 of the hanger member 20, and then the claw portions 23 of the hanger member 20 are pressed to cause plastic deformation, thereby fixing and holding the jewel 21 on the base portion 22. In this way, the hanger member 20 with the jewel 21 fixed thereto is produced.

[0079] After the frame member 30 and the hanger member 20 are produced, an assembly step (v) is performed to assemble the hanger member 20 to the frame member 30. In this assembly step, the left and right swingable ring portions 25 of the hanger member 20 are inserted into the left and right retaining ring portions 33 of the frame member 30 through slits 33b formed in the retaining ring portions 33, thereby hooking the left and right swingable ring portions 25 onto the left and right retaining ring portions 33. This causes the hanger member 20 to be swingably suspended and held by the left and right retaining ring portions 33 of the frame member 30. After the hanger member 20 is suspended by the left and right retaining ring portions 33, the retaining ring portions 33 are pressed and plastically deformed so that the slits 33b disappear, thereby forming the retaining ring portions 33 into a ring shape.

[0080] By carrying out the steps described above, the pendant top 10 of this embodiment is manufactured. In addition, by passing the chain 5 through the chain connection portion 34 of this pendant top 10, the necklace 1 in which the pendant top 10 is suspended from the chain 5 as shown in Fig. 1 is manufactured.

[0081] According to the necklace 1 and pendant top 10 of this embodiment, the frame member 30 and the hanger member 20 are each formed from a single pressed product produced by pressing a single metal plate. Because the frame member 30 is formed from a pressed product in this manner, the production time of the frame member 30 and the manufacturing time of the pendant top 10 can be shortened compared to conventional frame members formed by, for example, the aforementioned lost-wax casting, and the production cost of the frame member 30 can also be reduced. Specifically, by producing the frame member 30 using press working as in this embodiment, the production time of the frame member 30 can be reduced to less than one-third of that in the conventional case using lost-wax casting, and the production cost of the frame member 30 can be reduced to less than one-fifth of that in the conventional case using lost-wax casting.

[0082] Furthermore, by using press working to produce the frame member 30 as in this embodiment, the frame member 30 can be produced mechanically, making it less susceptible to the influence of experience, skill, and the like. As a result, the cost and time required for training craftsmen can be reduced, thereby further reducing manufacturing costs. Furthermore, since the production of the pendant top 10 is less susceptible to the influence of the worker's experience, skill, and the like, the occurrence of defective pendant tops 10 can be reduced. Furthermore, the stability of the quality of the pendant tops 10 can be ensured. Specifically, when multiple pendant tops 10 having the same structure are produced, the hanger member 20 can be swung slightly relative to the frame member 30 at the same speed and width for each pendant top 10. This makes it easy to achieve uniform swinging motion (swinging manner) of the hanger member 20, which was previously difficult.

[0083] Furthermore, by fabricating the frame member 30 using press working as in this embodiment, the strength of the frame member 30 can be increased compared to the conventional method of using lost-wax casting, and as a result, the frame member 30 can be formed thinner. For example, even if the frame member 30 is formed thin, having a thickness of 0.50 mm or less, or even 0.35 mm or less, the frame member 30 can be stably formed into the desired shape and can stably ensure appropriate strength to withstand the use of the pendant top 10. Furthermore, the ability to form the frame member 30 thin allows for a reduction in weight of the frame member 30 (for example, by about 50%) and also allows for a reduction in the amount of base metal used, thereby enabling further cost reductions.

[0084] Furthermore, by using press working, it is possible to mass-produce pendant tops 10 with the same structure, allowing for rapid response to large demand. Furthermore, by using press working, the outer surface of the frame member 30 can be finished more beautifully than when using lost wax casting, further improving the appearance quality of the pendant top 10. Furthermore, when plating the frame member 30, the plated surface can be formed beautifully.

[0085] In other words, the necklace 1 and pendant top 10 of this embodiment, in which the frame member 30 and hanger member 20 are each formed from a single press-processed product, offer many advantages over products made using lost-wax casting or products made by brazing the retaining ring portion to the frame main body, such as shorter manufacturing time, reduced manufacturing costs, more stable quality, lighter products, fewer defective products, and higher quality. [Explanation of symbols]

[0086] 1 necklace 5 Chain 10 Pendant top (accessory body) 20 Hanger parts 21 Gemstone (Diamond) 22 Base 23 Claw 24 Extension 25 Swing ring part 25a center opening 30 Frame members 30a Primary processed products 31 Frame body 31a Inner circumference 31b Outer periphery 32 Support arm 33 Retaining ring part 33a central opening 33b Slit 33c Lower end 33d upper end 34 Chain connection part 35 Connection Re: Outer diameter of retaining ring Ri Inner diameter of retaining ring α Incline angle

Claims

1. An accessory having a frame member and a hanger member suspended from the frame member, the frame member has a metal pressed product in which a frame main body and a pair of left and right holding ring portions for suspending and holding the hanger member are integrally formed, the press-formed product has a pair of left and right support arms that connect the frame main body and the retaining ring, The hanger member has at least a base portion for fixing the jewel, and a pair of left and right swing ring portions disposed on the left and right sides of the base portion and engaging with the pair of retaining ring portions, The pair of retaining ring portions and the pair of swinging ring portions are formed in an annular shape, The hanger member is swingably suspended from the frame member by hooking the inner peripheries of the left and right swing ring portions onto the inner peripheries of the corresponding holding ring portions. An ornament characterized by the above.

2. the retaining ring portion has a tapered shape that narrows toward the inside in the radial direction of the retaining ring portion when viewed in a cross section perpendicular to the circumferential direction of the retaining ring portion, The swing ring portion has a tapered shape that narrows toward the inside in the radial direction of the swing ring portion when viewed in a cross section perpendicular to the circumferential direction of the swing ring portion. The accessory according to claim 1.

3. the frame main body portion has a frame-like shape with an opening at the center when viewed from the front of the frame member, The support arm portion extends from the frame main body portion in a direction perpendicular to the circumferential direction of the frame main body portion. The accessory according to claim 1.

4. The support arm portion is formed with a constant thickness from the frame main body portion to the retaining ring portion, a length dimension of the support arm portion from the frame main body portion to the retaining ring portion is greater than a thickness dimension of the support arm portion and is smaller than an inner diameter dimension of the retaining ring portion; The width of the support arm portion is greater than the length of the support arm portion and smaller than the outer diameter of the retaining ring portion. The accessory according to claim 1.

5. The thickness of the support arm portion is 0.15 mm or more and 0.35 mm or less, a length dimension of the support arm portion from the frame main body portion to the retaining ring portion is 0.10 mm or more and 0.50 mm or less; The width of the support arm is 0.30 mm or more and 1.20 mm or less. The accessory according to any one of claims 1 to 4.

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