Abstract: A timepiece part, such as a balance staff, an oscillating weight or a dial, is made of polycrystalline material having a plurality of crystals each having a size of 0.7 ?m or more and 3 mm or less. The crystals at a surface of the timepiece part have mirror-finished surfaces, and the surfaces may be anodized to provide corrosion resistance. The normal directions of the mirror-finished surfaces are different from one another and provide a metallic luster to the timepiece part.

Abstract: To provide a decorative component, a timepiece, and a manufacturing method of the timepiece capable of improving workability for color development and of enhancing decorativeness. A surface of an oscillating weight 160 develops a color by forming anode oxide films 22a and 22b on the surface of the oscillating weight body 164 which is formed using titanium or a titanium alloy, and on the surface of the oscillating weight body 164, of the portions at which the anode oxide films 22a and 22b are formed, a nitridization treatment layer 21 is formed at the portion at which the anode oxide film 22a is formed.

Abstract: A part, a timepiece, and a manufacturing method of the part capable of avoiding the limitations on the member which is used, expanding variation in the design, being easily manufactured, and improving the aesthetic appearance are provided. In an oscillating weight in which a body of the oscillating weight to which anodizing can be applied and a conductive weight are fixed to each other, an insulating layer is interposed between the body of the oscillating weight and the weight.

Abstract: A decorative part, a timepiece, and a manufacturing method of the decorative part capable of stabilizing and improving the aesthetic appearance while using a fixing member are provided. In an oscillating weight which includes a body of an oscillating weight and screws for fixing the body of the oscillating weight to a weight, the body of the oscillating weight and the screws are a member to which an anodizing can be applied.

Abstract: A manufacturing method of a timepiece part which has small variation in hardness and a metallic luster is provided. Configuration includes a heat treatment process that heat-treats a timepiece part and coarsens a plurality of crystals of titanium or the like, a shape processing process that processes the shape of the timepiece part, an etching process that etches titanium or the like, mirror-finishes the surfaces of each crystal, and makes the normal directions of the surfaces of each crystal to be different from one another, and an anodizing process that performs anodizing on the surface of the timepiece part.

Abstract: In a chip type variable electronic part including an insulating substrate, and an adjustment rotor made of a metal plate rotatably mounted on an upper surface of the insulating substrate, in which the rotor is constituted of a first plate formed in a bowl shape to receive a screwdriver that rotates the rotor, and a second plate superposed on an upper surface of the first plate and integrally coupled thereto via a fold-back joint, and the second plate includes a screwdriver engagement hole perforated therein for the screwdriver to be fitted in, the fold-back joint is bent downward from an upper surface of the second plate, thereby preventing deformation of the fold-back joint when the rotor is rotated with the screwdriver.

Abstract: In a chip type variable electronic part including an insulating substrate, and an adjustment rotor made of a metal plate rotatably mounted on an upper surface of the insulating substrate, in which the rotor is constituted of a first plate formed in a bowl shape to receive a screwdriver that rotates the rotor, and a second plate superposed on an upper surface of the first plate and integrally coupled thereto via a fold-back joint, and the second plate includes a screwdriver engagement hole perforated therein for the screwdriver to be fitted in, the fold-back joint includes a pair of left and right downwardly bent lugs formed between a bending line of the fold-back joint and the second plate, such that a portion of the fold-back joint between the bending line thereof and the first plate is fitted between the pair of downwardly bent lugs, thereby preventing deformation of the fold-back joint when the rotor is rotated with the screwdriver.

Abstract: A chip type variable electronic part includes an insulating substrate with a through hole, an adjustment rotor formed of a metal plate in a bowl shape to receive a screwdriver and disposed on the upper surface of the insulating substrate, an internal terminal electrode plate made of a metal plate disposed in close contact with a lower surface of the insulating substrate, and a shaft portion integrally formed with the internal terminal electrode plate to be fitted in the through hole. A bottom plate of the adjustment rotor is rotatably fitted to the upper end portion of the shaft portion, and the upper end portion of the shaft portion is crimped to outwardly extend over the upper surface of the bottom plate. A portion of the bottom plate of the adjustment rotor, fitted over the shaft portion, is located at a lower level than the uppermost edge of an inner portion of the through hole on the upper surface of the insulating substrate.

Abstract: In a chip type variable electronic part including an insulating substrate, and an adjustment rotor made of a metal plate rotatably mounted on an upper surface of the insulating substrate, in which the rotor is constituted of a first plate formed in a bowl shape to receive a screwdriver that rotates the rotor, and a second plate superposed on an upper surface of the first plate and integrally coupled thereto via a fold-back joint, and the second plate includes a screwdriver engagement hole perforated therein for the screwdriver to be fitted in, the fold-back joint includes a pair of left and right downwardly bent lugs formed between a bending line of the fold-back joint and the second plate, such that a portion of the fold-back joint between the bending line thereof and the first plate is fitted between the pair of downwardly bent lugs, thereby preventing deformation of the fold-back joint when the rotor is rotated with the screwdriver.

Abstract: A chip type variable electronic part includes an insulating substrate with a through hole, an adjustment rotor formed of a metal plate in a bowl shape and disposed on the upper surface of the insulating substrate, an internal terminal electrode plate made of a metal plate disposed in close contact with the lower surface of the insulating substrate, and a hollow shaft integrally formed with the internal terminal electrode plate to be fitted in the through hole. The adjustment rotor has a bottom plate rotatably fitted to an upper end portion of the hollow shaft so that the bottom plate makes close contact with the surface of the insulating substrate. The upper end portion of the hollow shaft is crimped to outwardly extend. The bottom plate of the adjustment rotor is smaller in thickness than the remaining portions. Thus, the overall height is reduced without reducing the insertion depth of a screwdriver into the rotor, and without degrading the strength of the insulating substrate.

Abstract: In a chip type variable electronic part including an insulating substrate, and an adjustment rotor made of a metal plate rotatably mounted on an upper surface of the insulating substrate, in which the rotor is constituted of a first plate formed in a bowl shape to receive a screwdriver that rotates the rotor, and a second plate superposed on an upper surface of the first plate and integrally coupled thereto via a fold-back joint, and the second plate includes a screwdriver engagement hole perforated therein for the screwdriver to be fitted in, the fold-back joint is bent downward from an upper surface of the second plate, thereby preventing deformation of the fold-back joint when the rotor is rotated with the screwdriver.

Abstract: A chip type variable electronic part includes an insulating substrate with a through hole, an adjustment rotor formed of a metal plate in a bowl shape to receive a screwdriver and disposed on the upper surface of the insulating substrate, an internal terminal electrode plate made of a metal plate disposed in close contact with a lower surface of the insulating substrate, and a shaft portion integrally formed with the internal terminal electrode plate to be fitted in the through hole. A bottom plate of the adjustment rotor is rotatably fitted to the upper end portion of the shaft portion, and the upper end portion of the shaft portion is crimped to outwardly extend over the upper surface of the bottom plate. A portion of the bottom plate of the adjustment rotor, fitted over the shaft portion, is located at a lower level than the uppermost edge of an inner portion of the through hole on the upper surface of the insulating substrate.