A timepiece movement comprises a first luminous element for emitting light, a second luminous element for emitting light, and a light-receiving element for receiving the light emitted by the first and second luminous elements. A second wheel has an aperture through which light from the first luminous element may pass and a reflecting portion. A first transmitting wheel transmits a rotational drive to the second wheel as a function of second time and has an aperture through which light from the first luminous element may pass and which is positioned to become aligned with the aperture of the second wheel. A rotational minute wheel has apertures disposed at equal angular intervals and through which light from the second luminous element may pass. A rotational hour wheel has apertures through which light from the second luminous element may pass. Each of the apertures of the hour wheel are positioned to become aligned with respective ones of the apertures of the minute wheel during rotation of the minute and hour wheels. A second transmitting wheel transmits a rotational drive to the minute wheel and the hour wheel as a function of minute time and hour time, respectively. The second transmitting wheel has a plurality of apertures disposed at equal angular intervals and through which light from the second luminous element may pass. The apertures of the minute wheel are positioned to become aligned with respective ones of the apertures of the second transmitting wheel during rotation thereof.
A timepiece includes a light emitting device for generating a light, and one or more rotary wheels having one or more light receiving orifices, and one or more reflective members attached onto the sides of the rotary wheels for reflecting the light generated by the light emitting device and emitted through the orifices of the rotary wheels. The orifices may be easily and precisely formed in the rotary wheels while forming the rotary wheels, and the reflective members may be easily attached onto the rotary wheels without precisely positioning relative to the rotary wheels.
A super-thin hanging clock includes a housing, a transparent cover, and a core that has a first shell, a second shell fitted with the first shell and having a swingable lid to hide the battery and a through hole for the button to pass through, a stator, a PC board with a control circuit, an electrically time-adjusting button, an electronic battery and a transmitting gear system consisting of a rotor, a transmitting gear, a minute gear, a front hour gear and an hour gear, whereby a coil of the stator is powered to rotate the rotor to rotate the transmitting gear provided with a toothed shaft engaging the minute gear provided with a toothed shaft engaging the front hour gear provided with a toothed shaft engaging the hour gear provided with a shaft connected to a shaft of a needle unit, thus making up the super-thin hanging clock.
A first (5) of the indicators and a first pipe (1) form part of an angular position indicating moving part (MR1) carrying a plate (9) co-operating with a first sensor (11) for generating a position signal for said indicator as a result of discontinuities in the material of said plate. A second display indicator (6) coaxial to said first indicator is coupled to a second angular position indicating moving part (MR2). The latter, which is mounted at a distance from the first moving part, is in a meshing relationship with a second pipe (2) carrying said second indicator. This second moving part carries a second plate (18) co-operating with a second sensor (20), for generating a position signal for said second indicator as a result of discontinuities in the material of said second plate. The plates (9, 18) and the sensors (11, 20) can thus be arranged respectively side by side thus reducing the height to the superposition of one plate and one sensor only to indicate independently the angular positions of the first and second indicators.
