摘要:
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.
摘要:
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.
摘要:
A mechanical timepiece movement has a mainspring serving as a power source, a wheel train rotated by a rotational force produced by the mainspring for driving a display, and an escapement and speed control apparatus for controlling rotation of the wheel train and having a balance with hairspring, an escape wheel and pinion and a pallet fork. A stud holder is rotatably mounted with respect to a central axis of the balance with hairspring and a hairspring holder is attached to the stud holder to undergo movement in a direction orthogonal to the central axis of the balance with hairspring. A hairspring has a central portion fixed to the balance with hairspring and an outer portion fixed to the hairspring holder. The hairspring is adjustable by pivoting the hairspring holder.
摘要:
An attitude detection device has a case having inner surfaces, electrodes each disposed on a respective inner surface of the case and being insulated from one another in at least one preselected orientation of the case, and a conductive fluid disposed in the case. In a first orientation of the case, the conductive fluid electrically connects all but one of the electrodes to generate a first electrical pattern for outputting a first output signal. In a second orientation of the case, the conductive fluid electrically connects all but three of the electrodes to generate a second electrical pattern for outputting a second output signal. In a third orientation of the case different from the first and second orientations, a third electrical pattern is generated for outputting a third output signal.
摘要:
A mechanical timepiece has a power source comprised of a mainspring for undergoing rewinding movement to generate a rotational force. A front train wheel undergoes rotation in accordance with a rotational force generated during rewinding movement of the mainspring. An escapement/speed-control device controls rotation of the front train wheel. The escapement/speed-control device has a balance with a hairspring for undergoing alternately repeating rotational movement in left and right directions. An escape wheel and pinion undergoes rotation in accordance with rotation of the front train wheel. A pallet fork controls rotation of the escape wheel and pinion in accordance with rotational movement of the balance. A switch mechanism outputs an ON signal when a rotation angle of the balance reaches a predetermined threshold angle or greater, outputs an OFF signal when the rotation angle of the balance does not exceed the predetermined threshold angle. A rotation angle control mechanism supresses rotation of the balance when the switch mechanism outputs an ON signal.
摘要:
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.
摘要:
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.
摘要:
A movement 100 of a self-winding watch has a main plate 102, a train wheel bridge 104, a center wheel bridge 106, a third wheel bridge 107 and a transmission bridge 108. An oscillating weight 160 is rotatably attached to a third bridge 107. A first transmission intermediate gear 178a is structured to mesh with a first transmission gear 180a and oscillation weight pinion 176. An eccentric shaft-part 180d is provided on the first transmission wheel 180. A pawl lever 182 is assembled between the third wheel bridge 107 and the center wheel bridge 106. The pawl lever 182 has a guide hole 182a rotatably assembled on the eccentric shaft part 180d. The eccentric motion of pawl lever 182 winds up a spiral spring.
摘要:
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.
摘要:
According to a rate adjusting method, the movement of a mechanical timepiece is first assembled. The assembled movement is then disposed in a vertical position, and the rate is measured with respect to a plurality of vertical positions. On the basis of the result of this rate measurement, the magnitude and direction of the positional difference vector are calculated. On the basis of the result of this calculaton, the amount of weight to be added to or subtracted from the annular balance of the movement is calculated and the positions on the annular balance where this amount of weight is to be added to or to be subtracted from is calculated. Based on the results of these calculations, the amount of weight is added to or subtracted from the annular balance at the calculated positions.