Abstract: A torsion coil spring capable of suppressing decrease in rotational biasing force that is applied to two members coupled to each other in a rotatable manner. A torsion coil spring includes a coil portion, and a first arm portion, and a second arm portion extending respectively from a first end portion and a second end portion of the coil portion. The first arm portion includes an insertion portion that is inserted into a hole provided in the first member, a first intermediate portion, and a first bent portion. The second arm portion includes an engaging portion that is engaged with a step portion of the recessed portion provided in the second member, a second intermediate portion, and a second bent portion. As viewed in a direction that is perpendicular to a center line of the coil portion.

Abstract: An ornament that does not readily come off the body and is easy to wear a. The ornament has an elastically deforming line shaped member that is bent so that it can be put on a body, and two coupling parts provided at two separated locations on the line shaped member and are detachably coupled to each other. When no external force is applied to the line shaped member, the two coupling parts are close enough to be in contact. When the two coupling parts are coupled, the line shaped member enters a closed state, making it difficult for the line shaped member to come off the body. Furthermore, since the two coupling parts are close enough to be in contact in a state in which no external force is applied to the line shaped member, the two coupling parts that are close to each other may be easily coupled.

Abstract: A pierced earring that has a simple configuration and that is capable of further emphasizing beauty of its decorative component. A first jump ring of a distance adjustment member is provided. A second jump ring is engaged with the first jump ring. A cross-section of the first jump ring and a cross-section of the second jump ring are each formed in a tapered shape that protrudes at a distal angle of 60° to 90° to an inner side. With this, an inner periphery of the first jump ring and an inner periphery of the second jump ring are linked in point contact to each other. This allows the second jump ring to dangle about a Z-axis, an X-axis, and a Y-axis (three axes) relative to point-link portions in the point contact.

Abstract: An accessory includes a body that has a first hole surrounded by a first inner surface, and a component that has a first hole surrounded by a first inner surface to be engaged with the first inner surface. A method of manufacturing the component includes: a piercing step of forming, by blanking, the second hole through a sheet-like member of which the component is formed; a first reshaping step of swelling the second inner surface into the second hole by compressing a rim portion surrounding the second hole; a shearing step of cutting the component out of the sheet-like member; and a second reshaping step of rounding a tip portion of the second inner surface having swelled by the first reshaping. The second reshaping step includes barreling the component cut out by the shearing.

Abstract: A pierced earring that has a simple configuration and that is capable of further emphasizing beauty of its decorative component. A first jump ring of a distance adjustment member is provided. A second jump ring is engaged with the first jump ring. A cross-section of the first jump ring and a cross-section of the second jump ring are each formed in a tapered shape that protrudes at a distal angle of 60° to 90° to an inner side. With this, an inner periphery of the first jump ring and an inner periphery of the second jump ring are linked in point contact to each other. This allows the second jump ring to dangle about a Z-axis, an X-axis, and a Y-axis (three axes) relative to point-link portions in the point contact.

Abstract: An accessory includes a body that has a first hole surrounded by a first inner surface, and a component that has a first hole surrounded by a first inner surface to be engaged with the first inner surface. A method of manufacturing the component includes: a piercing step of forming, by blanking, the second hole through a sheet-like member of which the component is formed; a first reshaping step of swelling the second inner surface into the second hole by compressing a rim portion surrounding the second hole; a shearing step of cutting the component out of the sheet-like member; and a second reshaping step of rounding a tip portion of the second inner surface having swelled by the first reshaping. The second reshaping step includes barreling the component cut out by the shearing.

Abstract: A manufacturing apparatus for an accessory, including: a magazine holding unit in which a material magazine that holds a metal sheet material in a roll shape is arranged; a material feeding unit that repeats conveyance in which the metal sheet material is fed forward from the material magazine, and stop of the conveyance; a die-set unit that includes a die set which blanks the metal sheet material conveyed from the material feeding unit into a predetermined shape; a machining unit that bends a metal component formed by the blanking in the die-set unit; and a guide unit that is provided between the material feeding unit and the die-set unit, and that flattens and feeds the metal sheet material conveyed from the material feeding unit to the die-set unit, the guide unit including restricting the metal sheet material in a width direction of the metal sheet material.

Abstract: A manufacturing apparatus for an accessory, including: a magazine holding unit in which a material magazine that holds a metal sheet material in a roll shape is arranged; a material feeding unit that repeats conveyance in which the metal sheet material is fed forward from the material magazine, and stop of the conveyance; a die-set unit that includes a die set which blanks the metal sheet material conveyed from the material feeding unit into a predetermined shape; a machining unit that bends a metal component formed by the blanking in the die-set unit; and a guide unit that is provided between the material feeding unit and the die-set unit, and that flattens and feeds the metal sheet material conveyed from the material feeding unit to the die-set unit, the guide unit including restricting the metal sheet material in a width direction of the metal sheet material.

Abstract: A jewel support base that supports a jewel, the jewel support base including: an annular portion provided around a hole portion at a center of the annular portion; a plurality of support pieces that protrude from a rim of the annular portion to a center of the hole portion, the rim being on a side where the hole portion is present, and that are arranged at an interval along the rim; and a plurality of first holding claws that extend upward from the annular portion, and that are arranged around the hole portion, the plurality of support pieces supporting a lower side of the jewel that is arranged in the hole portion, the plurality of first holding claws holding an outer periphery of the jewel.

Abstract: A clasp includes a first clasp member and a second clasp member that are separable. The first clasp member includes a first connecting portion to which a linear member is connected, and a first coupling portion that is formed with the first connecting portion. The second clasp member includes a second connecting portion to which the linear member is connected, a second body portion that is continuous from the second connecting portion, a second coupling portion that extends from the second body portion in a direction away from the second connecting portion, and that has a hook shape to be coupled to the first coupling portion, an opening-and-closing portion that is pivotally supported by the second body portion, and that includes an abutment portion, and which is brought into abutment against the second coupling portion, and a locking portion that maintains a state of the abutment of the opening-and-closing portion.

Abstract: A member for an accessory includes: a base portion that is connected to a part of an accessory; and a movable portion that is supported to be capable of turning relative to the base portion, and that opens and closes the clasp member for accessory by the turning. The clasp member is separably coupled to a coupling subject portion. A base-side coupling portion of the base portion is arranged on one side in a longitudinal direction of the base portion, the one side being opposite to another side on which a connecting part of the base portion is arranged, the connecting part being connected to the part of the accessory.

Abstract: A personal ornament that includes: a base portion that includes a pair of right-and-left base-side engaging ring portions, and fixes and holds a gemstone; and a frame portion that includes a pair of right-and-left frame-side engaging ring portions to be coupled to the base-side engaging ring portions, and that supports the base portion, the base portion and the gemstone being supported to be swingable with respect to the frame portion. The personal ornament also includes a protective member that protects, from an outside, at least the frame-side engaging ring portions, and coupling parts of the base-side engaging ring portions with respect to the frame-side engaging ring portions.

Abstract: Provided is an accessory including: jewelry in which at least one hole is provided; and at least one link member inserted in the at least one hole, the jewelry being selected from a natural gemstone, a synthetic gemstone, a laboratory-created gemstone, a simulated gemstone, a natural raw gemstone, and a natural stone.

Abstract: A clasp includes a first clasp member and a second clasp member that are separable. The first clasp member includes a first connecting portion to which a linear member is connected, and a first coupling portion that is formed with the first connecting portion. The second clasp member includes a second connecting portion to which the linear member is connected, a second body portion that is continuous from the second connecting portion, a second coupling portion that extends from the second body portion in a direction away from the second connecting portion, and that has a hook shape to be coupled to the first coupling portion, an opening-and-closing portion that is pivotally supported by the second body portion, and that includes an abutment portion, and which is brought into abutment against the second coupling portion, and a locking portion that maintains a state of the abutment of the opening-and-closing portion.

Abstract: A decorative component includes: a frame fixed to an article; a body-to-be-suspended; and a suspending portion provided to the frame. The suspending portion suspends the body-to-be-suspended such that the body-to-be-suspended is swingable about an imaginary swing axis. The body-to-be-suspended and the suspending portion are held in contact with each other at two contact points located on the imaginary swing axis. The frame covers a part of a periphery of one of the two contact points in one of outer ranges, and covers a part of a periphery of another one of the two contact points in another one of the outer ranges, the parts being not covered with the article.

Abstract: A decorative component includes: a frame fixed to an article; a body-to-be-suspended; and a suspending portion provided to the frame. The suspending portion suspends the body-to-be-suspended such that the body-to-be-suspended is swingable about an imaginary swing axis. The body-to-be-suspended and the suspending portion are held in contact with each other at two contact points located on the imaginary swing axis. The frame covers a part of a periphery of one of the two contact points in one of outer ranges, and covers a part of a periphery of another one of the two contact points in another one of the outer ranges, the parts being not covered with the article.