Abstract: To provide a method for forming a timepiece train wheel support plate, which allow the formation of a horizontal hole without using a hydraulic core, and molds for forming a timepiece train wheel support plate, as well as timepiece train wheel support plate formed by the molds and a timepiece having the timepiece train wheel support plate. A method for forming a bottom board involves moving a pair of molds having a plurality of protrusions closer to an opposite surface, fitting end portions of the plurality of protrusions on one mold of the pair of molds among end portions of a plurality of protrusions on the other mold, and filling void spaces formed by the pair of molds with molding material to form a timepiece train wheel support plate having a horizontal hole corresponding to a series of the end portions of the plurality of protrusions on the pair of molds, the series of the end portions being fit to one another.

Abstract: An analog chronograph timepiece has a main plate and a setting stem for correcting time information. Defined at the main plate are a reference vertical axis line passing through the rotational center of the main plate and disposed parallel to a central axis line of the setting stem, and a reference horizontal axis line passing through the rotational center of the main plate and disposed orthogonal to the main plate reference vertical axis line. The main plate has regions disposed relative to the reference vertical and horizontal lines and in which a time coil block and first and second chronograph coil blocks are selectively arranged.

Abstract: To effectively prevent positional deviation of a battery. A hook-shaped member of a spring electrode terminal, and hook-shaped members of a spring electrode terminal are arranged in respective apices of a regular triangle to restrict movements of a battery in a direction along a cross section against the bias of a spring electrode terminal, which abuts against a negative surface of the battery. Battery abutments are arranged in respective apices of a substantially regular triangle to permit the bias of the respective spring electrode terminals to bias the battery toward the battery abutment, thus restricting positional deviation of the battery in a horizontal plane. When the battery is to be removed, a battery removal tool arranged near the hook-shaped member is inserted into a tool insertion portion to remove the battery.

Abstract: A battery holding structure for an electronic timepiece has a battery frame having an opening for receiving a battery. The battery frame has a plurality of fittings each having a tapered overhang extending toward the opening for holding the battery in the opening.

Abstract: To provide a hand motion irregularity suppressed timepiece whose ability has been improved. As to a spring having a flat portion and a bent portion, the flat portion is disposed between a second chronograph wheel and a center wheel, and the bent portion is sandwiched and supported under a pressurized state by a train wheel bridge and a bottom plate. By this, the spring portion prevents a hand motion irregularity of the second chronograph wheel by the fact that the second chronograph wheel is pressure-contacted with the train wheel bridge. Further, by forming a gap between the second chronograph wheel and the center wheel, an accompanying rotation between the second center wheel and the center wheel is prevented.

Abstract: An electronic timepiece (100) is provided that has indicator hands capable of providing various indications. The electronic timepiece with indicator hands, characterized by comprising a time hand (101, 102) indicative of time, first and second indicator hands (103, 104) separately provided from the time hand (101, 102), and drive means for reciprocally rotating the first and second indicator hands (103, 104) in opposite directions to each other within a predetermined range.

Abstract: To provide a small-sized and thin analog electronic timepiece having a mechanism capable of firmly setting a train wheel for rotating a small second hand. An analog electronic timepiece includes a main plate, bridge members time information indicating wheels rotated with a main plate center as rotation center, a small second wheel rotated with a position other than a center of a movement as rotation center, a hand setting stem, a switching apparatus and a dial. The analog electronic timepiece includes a reset lever constituted to be able to rotate by operating the switching apparatus when the hand setting stem is pulled out to a first stage and a train wheel setting lever constituted to linearly move based on rotation of the reset lever. In a state of pulling out the hand setting stem to the first stage, a train wheel setting lever can set rotation of the small second wheel or other wheel provided to rotate the small second wheel.

Abstract: To provide a timepiece capable of arranging a chronograph second hand at a center of a movement of a chronograph timepiece as well as a position other than the center of the movement. In an analog chronograph timepiece, a main plate and bridge members are provided with bearing portions of a rotor and a train wheel for “center chronograph timepiece” and bearing portions of a rotor and a train wheel for “side chronograph timepiece”. The rotor and the train wheel for “side chronograph timepiece” are rotatably integrated to the bearing portions of the main plate and the bridge members. Time information is indicated by time indicating members rotated with a main plate center as a rotation center and a result of measuring chronograph is indicated by chronograph indicating members rotated with positions between the main plate center and outer shape portions of the main plate as rotation centers.

Abstract: An electronic timepiece with indicator hands (100) having indicator hands capable of providing a variety of indications and capable of preventing unstable operation due to irregular movement of the indicator hand, which comprises: time hands (101, 102) showing time; first and second indicator hands (103, 104) provided separately from said time hands (101, 102); rotation means for reciprocally rotating said first and second indicator hands (103, 104) in directions opposite to each other within a predetermined range; and restricting means for restricting the range in which said first and second indicator hands (103, 104) can move. Where the indicator hands (103, 104) are rotating toward an outside of a restriction range due to impact or the like, the rotation is restricted by the restricting means.

Abstract: To effectively prevent positional deviation of a battery. A hook-shaped member of a spring electrode terminal, and hook-shaped members of a spring electrode terminal are arranged in respective apices of a regular triangle to restrict movements of a battery in a direction along a cross section against the bias of a spring electrode terminal, which abuts against a negative surface of the battery. Battery abutments are arranged in respective apices of a substantially regular triangle to permit the bias of the respective spring electrode terminals to bias the battery toward the battery abutment, thus restricting positional deviation of the battery in a horizontal plane. When the battery is to be removed, a battery removal tool arranged near the hook-shaped member is inserted into a tool insertion portion to remove the battery.

Abstract: To provide a hand motion irregularity suppressed timepiece whose assembling ability has been improved. As to a spring having a flat portion and a bent portion, the flat portion is disposed between a second chronograph wheel and a center wheel, and the bent portion is sandwiched and supported under a pressurized state by a train wheel bridge and a bottom plate. By this, the spring portion prevents a hand motion irregularity of the second chronograph wheel by the fact that the second chronograph wheel is pressure-contacted with the train wheel bridge. Further, by forming a gap between the second chronograph wheel and the center wheel, an accompanying rotation between the second chronograph wheel and the center wheel is prevented.

Abstract: To provide a battery holding structure of an electronic timepiece having a simple constitution and being inexpensive, there is provided a battery frame (102) having an opening portion (113) for holding a battery (101), the battery frame (102) is provided with engaging portions (105 through 108) projected to a side of the opening portion (113) and having eaves portions (105a through 108a) provided with tapers and the battery (101) is inserted into the opening portion (113) and is held by the battery frame (102) and the eaves portions (103a through 109a)

Abstract: An electronic timepiece with indicator hands having indicator hands capable of providing a variety of indications and capable of preventing unstable movement of the indicator hands, which comprises time hands (101, 102) for showing a time, first and second indicator hands (103, 104) provided separately from said time hands (101, 102), rotating means for reciprocally rotating said first and second indicator hands (103, 104) in directions opposite to each other within a predetermined range, and restricting means for restricting a movable range and capable of adjusting a restricting position of said first and second indicator hands (103, 104). Jumping of hands or the like of the first and second indicator hands (103, 104) due to impact or the like is restricted by the restricting means. Further, where there is a fear that the first and second indicator hands (103, 104) stop in a non-rotatable range, the restricting means is adjusted to change the movable range of the first and second indicator hand (103, 104).