Abstract: A return spring structure of a hand-wound timepiece has a plate-like placement portion that is placed on a surface of a support member. A forced insertion hooking spring portion is forcibly inserted into an opening of a locking plate-like portion of the support member, and has a forced insertion hooking end portion locked in a back surface of a wall defining the opening and a hooking spring arm portion extending from one edge portion of the plate-like placement portion. A return spring portion extends from the other edge portion of the plate-like placement portion. The return spring structure also has a positioning spring portion that includes a positioning spring arm portion extending parallel to the hooking spring arm portion from the one edge portion of the plate-like placement portion and a forced insertion engagement end portion engaged with the opening of the support member at the forward end portion.

Abstract: The present invention relates to sliding parts, precision parts and timepieces and electronic equipment using those parts. Sliding parts are composed by a resin in which the degree of orientation of a fibrous filler is higher at the portion serving as the sliding surface than inside the sliding part, and the fibrous filler is oriented along the sliding surface on the sliding surface. Alternatively, precision parts are composed by a resin to which has been added carbon fibers for which a carbon compound is thermally decomposed to carbon in the vapor phase and simultaneously grown directly into fibers simultaneous to this thermal decomposition. Moreover, timepieces and electronic equipment are composed by these sliding parts or these precision parts.

Abstract: The present invention relates to sliding parts, precision parts and timepieces and electronic equipment using those parts. Sliding parts are composed by a resin in which the degree of orientation of a fibrous filler is higher at the portion serving as the sliding surface than inside the sliding part, and the fibrous filler is oriented along the sliding surface on the sliding surface. Alternatively, precision parts are composed by a resin to which has been added carbon fibers for which a carbon compound is thermally decomposed to carbon in the vapor phase and simultaneously grown directly into fibers simultaneous to this thermal decomposition. Moreover, timepieces and electronic equipment are composed by these sliding parts or these precision parts.

Abstract: A multifunctional watch has a movement including first and second train wheel rotational centers each arranged at a position between a center of a main plate and an outline portion of the main plate. The first and second train wheel rotational centers are provided with respective first and second train wheel guide portions rotatably guiding respective first and second train wheel members about the respective first and second train wheel rotational centers. A first train wheel having the first train wheel member is arranged rotatably relative to the first train wheel rotational center for rotating one of the small hands only in a single direction of rotation to display the first calendar information. A second train wheel having the second train wheel member is arranged rotatably relative to the second train wheel rotational center for rotating another of the small hands only in a single direction of rotation to display the second calendar information.

Abstract: The present invention relates to sliding parts, precision parts and timepieces and electronic equipment using those parts. Sliding parts are composed by a resin in which the degree of orientation of a fibrous filler is higher at the portion serving as the sliding surface than inside the sliding part, and the fibrous filler is oriented along the sliding surface on the sliding surface. Alternatively, precision parts are composed by a resin to which has been added carbon fibers for which a carbon compound is thermally decomposed to carbon in the vapor phase and simultaneously grown directly into fibers simultaneous to this thermal decomposition. Moreover, timepieces and electronic equipment are composed by these sliding parts or these precision parts.

Abstract: There is realized a multifunction timepiece constituted to be able to constitute a plurality of types of hand operating train wheels by only changing positions of integrating parts without changing dimensions and shapes of parts of a movement. A movement of a multifunction timepiece includes a first train wheel rotation center, and a second train wheel rotation center. A train wheel for indicating calendar information is arranged to be rotatable relative to one of the first train wheel rotation center, and the second train wheel rotation center. When the first train wheel rotation center is arranged with a train wheel for indicating calendar information, the calendar information can be indicated by a small hand rotated to move by the train wheel, when the second train wheel rotation center is arranged with a fan shape hand operating train wheel for indicating the calendar information, the calendar information can be indicated by a small hand moved in a fan shape operating train wheel.

Abstract: There is realized a multifunction timepiece constituted to be able to constitute a plurality of types of hand operating train wheels by only changing positions of integrating parts without changing dimensions and shapes of parts of a movement. A movement of a multifunction timepiece includes a first train wheel rotation center, and a second train wheel rotation center. A train wheel for indicating calendar information is arranged to be rotatable relative to one of the first train wheel rotation center, and the second train wheel rotation center. When the first train wheel rotation center is arranged with a train wheel for indicating calendar information, the calendar information can be indicated by a small hand rotated to move by the train wheel, when the second train wheel rotation center is arranged with a fan shape hand operating train wheel for indicating the calendar information, the calendar information can be indicated by a small hand moved in a fan shape operating train wheel.

Abstract: To realize a multifunctional watch which is constituted so as to be capable of forming a plurality of movement layouts without changing sizes and shapes of components for the movement only by changing positions where the components are incorporated. A movement 201 of a multifunctional watch is provided with a first train wheel rotational center and a second train wheel rotational center. The first train wheel rotational center and the second train wheel rotational center are aligned on a position between a main plate center 202c of a main plate 202 and a main plate outline portion of the main plate 202. On the first train wheel rotational center and the second train wheel rotational center, a train wheel guide portion for rotatably guiding a train wheel member is disposed, respectively. A train wheel for displaying time information or calendar information is aligned rotatably for on of the first train wheel rotational center and the second train wheel rotational center.

Abstract: To realize a small-sized analog multifunction timepiece by adopting a fan shape moving hand mechanism which does not use a hairspring. A multifunction timepiece of the invention is provided with a day display mechanism for operating a small hand moving in a fan shape. The day display mechanism is provided with a day indicator driving wheel, a day jumper, a small day wheel for displaying calendar information, a hammer constituted to rotate based on rotation of a day indicator transmission wheel, and a day return spring for exerting a rotational force to the small day wheel. By bringing a cam contact portion of the hammer to a transmission cam outer periphery portion and exerting an elastic force to a return cam outer shape portion by a return spring portion of the day return spring, the small day wheel is constituted to be exerted with a rotational force in a constant direction.

Abstract: To realize an analog multifunction timepiece which is small sized and does not need much time period in operation of fabricating and integrating a part by adopting a fan shape moving hand mechanism without using a hairspring. A movement of a multifunction timepiece is provided with a calendar information display mechanism. The calendar information display mechanism is provided with a transmission wheel having a transmission cam portion, a display wheel constituted to rotate based on rotation of the transmission wheel and for displaying calendar information, a first hammer rotatably provided by being brought into contact with a transmission cam portion, and a second hammer rotatably provided in corporation with the display wheel. The first hammer includes a cam contact portion and an operating wheel portion. The second hammer is constituted to always receive a force of rotating in a constant direction.

Abstract: To realize an analog multifunction timepiece capable of realizing plural movement layouts including a fan shape moving hand train wheel by only changing positions of integrating parts without changing dimensions and shapes of the parts of movements. A movement of a multifunction timepiece is provided with a first train wheel rotational center, a second train wheel rotational center, a third train wheel rotational center and a fourth train wheel rotational center. Calendar information can be displayed by a small hand moving to rotate centering on the first train wheel rotational center and the second train wheel rotational center. Calendar information can be displayed by a small hand moving in a fan shape centering on the third train wheel rotational center and the fourth train wheel rotational center.

Abstract: The invention relates to a timepiece which has a resin bearing section. Moreover, the invention relates to a wheel train apparatus which has a resin bearing section. The invention is constituted by the timepiece provided with a gear wheel and supporting members which support the gear wheel, the supporting members being formed from a filler containing resin. Alternatively the invention is constituted by the wheel train apparatus provided with a gear wheel and supporting members which support the gear wheel, the supporting members being formed from a filler containing resin.

Abstract: The invention relates to a timepiece which has a resin substrate, rotors, and wheel trains, and relates to a wheel train apparatus which has a resin substrate, bearing members, gear wheel, and the like. The invention is constituted by a timepiece comprising; a gear wheel, and a substrate which supports a shaft of a rotor and/or a shaft of the gear wheel, the substrate being formed from a filled resin. Alternatively the invention is constituted by a wheel train apparatus comprising: a gear wheel; a substrate which supports one shaft section of the gear wheel, and a bridge which rotatably supports an other shaft section of the gear wheel, the substrate and the bridge being formed from a filled resin.

Abstract: A calendar timepiece has a main plate, a time indicator mounted on the main plate for undergoing rotational movement to indicate time information, a date indicator mounted for undergoing rotation to indicate date information, and a date indicator driving wheel mounted on the main plate for undergoing rotation. A date jumper is disposed on the main plate and has a train wheel comprised of a date indicator setting portion for controlling rotation of the date indicator by engagement with the inner teeth portion of the date indicator. The date indicator setting portion has a first setting portion for contacting a tip of a first tooth of the date indicator, a second setting portion, and a third setting portion for contacting a tip of a second tooth of the date indicator. Each of the first, second, and third setting portions has a generally linear surface portion disposed at an angle relative to one another.

Abstract: The invention relates to a timepiece which has a resin substrate, rotors, and wheel trains, and relates to a wheel train apparatus which has a resin substrate, bearing members, gear wheel, and the like. The invention is constituted by a timepiece comprising; a gear wheel, and a substrate which supports a shaft of a rotor and/or a shaft of the gear wheel, the substrate being formed from a filled resin. Alternatively the invention is constituted by a wheel train apparatus comprising: a gear wheel; a substrate which supports one shaft section of the gear wheel, and a bridge which rotatably supports an other shaft section of the gear wheel, the substrate and the bridge being formed from a filled resin.

Abstract: To realize an analog multifunction timepiece capable of realizing plural movement layouts including a fan shape moving hand train wheel by only changing positions of integrating parts without changing dimensions and shapes of the parts of movements. A movement of a multifunction timepiece is provided with a first train wheel rotational center, a second train wheel rotational center, a third train wheel rotational center and a fourth train wheel rotational center. Calendar information can be displayed by a small hand moving to rotate centering on the first train wheel rotational center and the second train wheel rotational center. Calendar information can be displayed by a small hand moving in a fan shape centering on the third train wheel rotational center and the fourth train wheel rotational center.

Abstract: To realize an analog multifunction timepiece which is small sized and does not need much time period in operation of fabricating and integrating a part by adopting a fan shape moving hand mechanism without using a hairspring. A movement of a multifunction timepiece is provided with a calendar information display mechanism. The calendar information display mechanism is provided with a transmission wheel having a transmission cam portion, a display wheel constituted to rotate based on rotation of the transmission wheel and for displaying calendar information, a first hammer rotatably provided by being brought into contact with a transmission cam portion, and a second hammer rotatably provided in corporation with the display wheel. The first hammer includes a cam contact portion and an operating wheel portion. The second hammer is constituted to always receive a force of rotating in a constant direction.

Abstract: To realize a small-sized analog multifunction timepiece by adopting a fan shape moving hand mechanism which does not use a hairspring. A multifunction timepiece of the invention is provided with a day display mechanism for operating a small hand moving in a fan shape. The day display mechanism is provided with a day indicator driving wheel, a day jumper, a small day wheel for displaying calendar information, a hammer constituted to rotate based on rotation of a day indicator transmission wheel, and a day return spring for exerting a rotational force to the small day wheel. By bringing a cam contact portion of the hammer to a transmission cam outer periphery portion and exerting an elastic force to a return cam outer shape portion by a return spring portion of the day return spring, the small day wheel is constituted to be exerted with a rotational force in a constant direction.

Abstract: To realize a chronograph timepiece capable of firmly and simultaneously zeroing an hour heart cam, a second heart cam and a minute heart cam. A chronograph timepiece of the invention includes a hammer operated by operating a reset button for controlling to operate to zero an hour chronograph wheel & pinion, a minute chronograph wheel & pinion and a second chronograph wheel & pinion. When the hammer is brought into contact with an hour heart cam, a second heart cam and a minute heart cam, a position of the hammer is determined only by the hour heart cam, the second heart cam and the minute heart cam. When the hammer is brought into contact with the hour heart cam, the second heart cam and the minute heart cam, a direction of a press force exerted to the hammer is constituted to pass a rotational center of the second chronograph wheel.

Abstract: The present invention relates to a ball bearing that includes a plurality of balls and a retainer. The present invention also relates to a self-winding timepiece that is provided with a ball bearing. The present invention employs a retainer that is formed from a resin that contains filler as a component element of the ball bearing. Alternatively, the present invention employs a ball bearing that has a retainer that is formed from a resin that contains filler as a component element of the self-winding timepiece.