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206results about "Horological winding mechanisms" patented technology

Device comprising a clock movement and a chronograph module

A device comprises a basic clock movement MB whose time indicators are driven by a first barrel connected to a first wheelwork and a first regulator organ, and an autonomous chronograph module MCA whose indicators are driven by a second barrel independent from the first, connected to a second wheelwork and a second regulator organ. The chronograph module is exclusively composed of mechanical elements. The frequency of oscillation supplied by its regulator is equal N times the frequency of oscillation supplied by the regulator of the base movement, with the coefficient N being definable according to a specific application of the chronograph, so that any chronograph module thus previously defined can work with-the same base movement. The chronograph regulator remains constantly engaged with the corresponding wheelwork. The chronograph module allows a time interval to be read with a minimum precision of a hundredth of second. The organs of the base movement and of the chronograph module are arranged in such a way that in assembled state, the height and overall diameter do not exceed 7.75 mm and 30 mm respectively, the dimensions of the chronograph itself being not greater than 4 mm (height) and 30 mm (diameter) when its elements are mounted on a bottom plate, so that the device can advantageously be integrated in the case of a wrist-watch and affords an aesthetic exterior.
Owner:LVMH SWISS MFG SA

Rechargeable electronic watch and driving method of rechargeable electronic watch

To extend the clock operation duration of a multi-functional rechargeable electronic watch, and to provide a rechargeable electronic watch that would not affect the feeling of use of said rechargeable electronic watch. A rechargeable electronic watch (10) operating with an energy source comprising a power supply (26) including a power generation means (1) and a power storage means (2) charged with electric energy from said power generation means (1), said rechargeable electronic watch comprising a watch circuit (5) for counting or operating hour information or function information or the like and outputting information, a display means (11) for displaying hour information or function information or the like based on output signal from said watch circuit, a power generation magnitude detecting means (3) for detecting the power generation volume of said power generation means (1), and a control means (5) for controlling the operation of said watch circuit (5) according to said power generation magnitude, wherein said watch circuit (5) is driven by at least one clock operation mode selected from a plurality of clock operation modes different in power consumption provided by said watch circuit (5).
Owner:CITIZEN WATCH CO LTD

Time keeping apparatus and control method therefor

When a time keeping apparatus is in a power saving mode, performing time display is stopped, and the apparatus periodically receives a time data from outside and sets the data to a second time counter 98 and an hour-and-minute time counter 99. When the operation mode of the time keeping apparatus is switched from the power saving mode to the display mode, the apparatus resumes to display the current time based on the counted values in the second time counter 98 and the hour and minute time counter 99.
Owner:SEIKO EPSON CORP

Device comprising a clock movement and a chronograph module

A device comprises a basic clock movement MB whose time indicators are driven by a first barrel connected to a first wheelwork and a first regulator organ, and an autonomous chronograph module MCA whose indicators are driven by a second barrel independent from the first, connected to a second wheelwork and a second regulator organ. The chronograph module is exclusively composed of mechanical elements. The frequency of oscillation supplied by its regulator is equal N times the frequency of oscillation supplied by the regulator of the base movement, with the coefficient N being definable according to a specific application of the chronograph, so that any chronograph module thus previously defined can work with the same base movement. The chronograph regulator remains constantly engaged with the corresponding wheelwork. The chronograph module allows a time interval to be read with a minimum precision of a hundredth of second. The organs of the base movement and of the chronograph module are arranged in such a way that in assembled state, the height and overall diameter do not exceed 7.75 mm and 30 mm respectively, the dimensions of the chronograph itself being not greater than 4 mm (height) and 30 mm (diameter) when its elements are mounted on a bottom plate, so that the device can advantageously be integrated in the case of a wrist-watch and affords an aesthetic exterior.
Owner:LVMH SWISS MFG SA

Pawl lock assembly system

The invention relates to a method (19, 19′, 39, 39′, 59, 59′) of assembling a part (5, 5′, 25, 25′, 45, 45′) in the aperture (18, 18′, 38, 38′, 58, 58′) of a component (3, 3′, 23, 23′, 43, 43′). According to the invention, the assembly system (19, 19′, 39, 39′, 59, 59′) includes a system (1, 1′, 21, 21′, 41, 41′) of securing the component (3, 3′, 23, 23′, 43, 43′) and the part (5, 5′, 25, 25′, 45, 45′) to each other, which includes at least one pawl device (11, 11′, 31, 31′, 51, 51′) intended to make the component (3, 3′, 23, 23′, 43, 43′) and the part (5, 5′, 25, 25′, 45, 45′) move integrally with each other. The invention concerns the field of timepieces.
Owner:NIVAROX FAR

Torque adjusting device, movement and mechanical clock

ActiveCN104049518AControl of volume tightnessBad situation foundGearworksEscapementsGear wheelEngineering
The invention provides a torque adjusting device (6) which can handle winding amount of an assistant spring (65) and is excellent in volume efficiency, a movement and a mechanical clock. The torque adjusting device (6) provided with the assistant spring (65) comprises an output gear wheel (66) which is connected with the end part of the inner periphery of the assistant spring and is connected with a release catch (50); a ratchet wheel (64) which is connected with the end part of the outer periphery of the assistant spring and rotates intermittently relative to the output gear wheel (66); a winding amount adjusting mechanism (80) which adjusts the winding amount of the assistant spring (65); and a planetary gear mechanism (90) which is connected with the ratchet wheel (64), a barrel wheel (10) and the winding amount adjusting mechanism (80). The winding amount adjusting mechanism (80) comprises a winding amount holding part which holes the winding amount of the assistant spring (65), and a winding amout display part which displays the winding amount of the assistant spring (65).
Owner:SEIKO INSTR INC

Power reserve display mechanism

A power reserve display mechanism includes a differential (22) having:a first input (22a) connected to a ratchet (16) of a barrel (24) and to an oscillating mass automatic winding system,a second input (22b) connected to the drum of a barrel (24),an output (22c) connected to a display system. The display system includes at least one disc (40) provided with digits for displaying numbers between a minimum number and a maximum number. Moreover, the disc is connected to the output (22c) of the differential (22) via a reduction train (26), arranged such that the display system displays the minimum number when the barrel is empty and the maximum number when the barrel is maximally loaded. The reduction train and the automatic winding system are arranged such that the disc advances by one pitch each time the oscillating mass performs on revolution.
Owner:JOUVENOT FREDERIC

Electronic watch and electronic watch control method

An electronic timepiece (10) comprises time information generating unit (A) for generating time information, information generating unit for generating information (function information, warning information, etc.) other than the time information, and power-saving operation unit (D) for operating the electronic timepiece in a power-saving operation state entailing lower power consumption than in a normal operation state. The information generating unit or the power-saving operation unit (D) is operated preferentially.
Owner:CITIZEN WATCH CO LTD

Mobile equipment with time control for DRM schemes

The present invention provides a mobile equipment for non stationary use. The mobile equipment includes a real time clock (RTC) integrated in the mobile equipment for generating a real time information, a system time generator integrated in the mobile equipment for generating a system time information by adding an offset to the real time information given by the RTC, a non-volatile memory for the permanent storage of data and an input means for inputting instructions for changing the system time information. The possible changes of the system time information generated by the system time generator may be limited to a preset time range and the possible reset value of the RTC may be limited according to the data stored in the non-volatile memory.
Owner:SONY ERICSSON MOBILE COMM AB

Electronic clock, electronic apparatus and starting method

Using an oscillating unit (601) that can start oscillation with a low voltage, an oscillation signal (S1) of the oscillating unit (601) is amplified via a waveform shaping unit (603), and is fed to a boosting control unit (105). A boosting unit (103) is caused to perform a boosting behavior by a boosting clock (Sa) with the same frequency as an oscillation frequency of the oscillation signal (S1) just after the oscillating unit (601) starts. Thereby, a whole electronic timepiece (100) can be self-actuated, even if a generation voltage is low. Further, the oscillating unit (601) is constituted such that a operating current always becomes constant. Thereby, the electronic timepiece can be provided with an electricity-generating unit (101) such as a solar cell with a one-stage constitution having a low open voltage.
Owner:CITIZEN WATCH CO LTD

Drive control apparatus, electronic apparatus, method of controlling drive of electronic apparatus, drive control program, and recording medium

In an electronic device 1 comprising a battery 200 and a piezoelectric actuator A, a power source voltage before drive control is started is maintained by a sample holding circuit 102, a reference voltage is set by a reference voltage generating circuit 103 on the basis of the power source voltage, and a control circuit 106 stops driving when the power source voltage falls below a drive stop voltage as compared by a second comparison circuit 105, and begins driving the piezoelectric actuator A again when the power source voltage exceeds the reference voltage as compared by a first comparison circuit 104. Therefore, the device can be more easily reduced in size by using a small power source, and the driving time can be markedly reduced using an intermittent driving procedure that corresponds to the conditions of the battery voltage.
Owner:SEIKO EPSON CORP

Slip gear structure and timepiece equipped with the same

Disclosed is a slip gear structure which is easy to handle at the time of dismantling / assembly and which does not easily suffer breakage even if dismantling / assembly is repeated, and a timepiece equipped with the same. A slip gear structure for a timepiece includes: a gear main body portion in the form of an annular plate having in the outer periphery thereof tooth portions, there being provided spring portions extending across an inner opening; and a positioning member equipped with a small diameter plate-like portion having a central hole with which a shaft is rotatably fit-engaged and a pair of support wall portions arranged on both sides of the central hole and protruding from one surface. When the slip gear structure is in a non-fit-engaged state with respect to the shaft, the spring portions of the gear main body are elastically pressed against side edge portions of the support wall portions, with central spring portions thereof situated between the side edge portions protruding into the central hole; and when the slip gear structure is in a fit-engaged state with respect to the shaft at the central hole, the central spring portions of the spring portions of the gear main body portion are elastically pressed against the shaft for slip engagement with the shaft.
Owner:SEIKO INSTR INC

Electronic timepiece and method of driving eletronic timepiece

An electronic timepiece having functions of a function-display operation and a power-saving operation, and driving method of the electronic timepiece. The electronic timepiece has time information generating means for generating time information, function information generating means for generating function information, display means for selectively display time information and function information, power-saving operation means for performing operations in a power-saving operation state consuming a power less than the normal operation state, and power-saving operation preferential means-for making the power-saving operation of power-saving operation means prior to the operation of function information.
Owner:CITIZEN WATCH CO LTD

Electronic timepiece equipped with calendar function

PCT No. PCT / JP97 / 02891 Sec. 371 Date May 5, 1998 Sec. 102(e) Date May 5, 1998 PCT Filed Aug. 20, 1997 PCT Pub. No. WO98 / 09201 PCT Pub. Date Mar. 5, 1998An electronic timepiece includes a time counter (19) for counting time reference signals, a calendar hand moving device (20) for moving hands in accordance with the count content of the time counter, a cover open / close switch (15) for sensing opening / closing of a timepiece cover and time information setting means for setting time calendar information when the timepiece cover is opened. The time counter (19) is constituted so that it counts the time reference signals by using the time information set by the time information setting means as the reference, and the time information setting means includes an electrode code plate (10) having a plurality of electrodes (10A) that can be electrically connected by an conductive material such as a pencil, a detection circuit (12) for judging the connection between the electrodes and a memory circuit (14) for judging the connection between the electrodes, converting it to time information and storing the time information.
Owner:CITIZEN WATCH CO LTD

Electronic timepiece

Using an oscillating unit (601) that can start oscillation with a low voltage, an oscillation signal (S1) of the oscillating unit (601) is amplified via a waveform shaping unit (603), and is fed to a boosting control unit (105). A boosting unit (103) is caused to perform a boosting behavior by a boosting clock (Sa) with the same frequency as an oscillation frequency of the oscillation signal (S1) just after the oscillating unit (601) starts. Thereby, a whole electronic timepiece (100) can be self-actuated, even if a generation voltage is low. Further, the oscillating unit (601) is constituted such that a operating current always becomes constant. Thereby, the electronic timepiece can be provided with an electricity-generating unit (101) such as a solar cell with a one-stage constitution having a low open voltage.
Owner:CITIZEN WATCH CO LTD

Spring device and timepiece

A spring device having an inside-end wheel that moves in conjunction with the inside end of a mainspring; an outside-end wheel that moves in conjunction with the outside end of the mainspring; a torque return unit that transfers part of the output torque of the mainspring from one to the other of the inside-end wheel and outside-end wheel; a duration time indicating unit that operates in conjunction with both the inside-end wheel and outside-end wheel and indicates the number of winds in the mainspring; and a torque transfer clutch unit that disengages torque transfer between the inside-end wheel and outside-end wheel by means of the torque return unit when the mainspring unwinds and the duration time indicating unit indicates a predetermined reference number of winds.
Owner:SEIKO EPSON CORP
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