JPS59135388A - Time piece - Google Patents

Abstract

PURPOSE:To obtain a watch with high reliability and high accuracy requiring no exchange of a battery and also dispensing with a chemical battery, by providing a mechanism for accumulating mechanical energy, a train wheel supplied with energy from said accumulating mechanism and a power generator for regulating the speed of said train wheel while providing a crystal oscillator driven by the electric energy obtained from the power generator, an electronic circuit and a mechanism for controlling the power generator by the electronic circuit. CONSTITUTION:The output from the coil 23 of an electromagnetic generator is rectified by diodes 12, 13. The numeral 14 shows a smoothing capacitor while the numeral 15 is a crystal oscillator driven by a power source and outputs a time reference signal. A frequency divider 16 performs frequency dividing up to the cycle corresponding to the predetermined rotation of the generator. An up-down counter 17 counts the differentiation signal of the generator obtained by 18, 19 as an up-signal and the signal of the frequency divider 16 as a down- signal. A code discriminating circuit 20 turns a transmission gate 21 ON when the signal of the counter 17 is positive and connects a resistor 22 between power sources in parallel. A rotor with a magnetic pole is rotated by torque piercing a coil 23 and transmitted from a barrel drum.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic timepiece using stored mechanical energy as a driving source.

Figure 1 shows a block diagram of a conventional electronic watch.

In Figure 1, 1 is a chemical battery, 2 is a crystal oscillator, and 3 is a chemical cell.
4 is a driving circuit for a crystal oscillator, and 4 is a circuit that divides the frequency of the source signal of the crystal oscillator to create a driving signal for the motor 5.

The motor is the power source, driving the wheel train, and displaying the hours, minutes, day, day, etc.

Such conventional electronic watches have the following drawbacks.

That is, a battery is used as an energy source, and it is necessary to replace the battery after consumption. This requires the user to pay for battery replacement, and there is no guarantee that the battery replacement service will be available at the end of the service period, leading to feelings of anxiety.

Some use a secondary chemical battery as the first battery and charge it with a solar cell or the like, but based on the durability of the chemical battery, when the battery life runs out, it needs to be replaced.

The present invention eliminates such drawbacks of the conventional technology and has the following features.

(1) In conventional mechanical watches, the barrel is called the barrel.
A mechanical energy storage mechanism that stores energy using a manual winding mechanism or an automatic winding mechanism that uses a weight.
It is used as an energy source to drive a clock. This allows it to withstand semi-permanent use, except for failures.

(2) A crystal oscillator provides a highly accurate, time-standard signal that controls the generator and achieves extremely high accuracy.

The content of the invention will be explained below with reference to the drawings.

FIG. 2 is a block diagram of the structure of the timepiece of the present invention. Second
In the figure, 6 is a barrel that stores mechanical energy, and the energy is stored manually or by an automatic winding mechanism.

7 is a gear train, which displays hours, minutes, seconds, calendar, etc. 8 applies an electromagnetic generator, etc., which is a speed regulating mechanism using a generator. 9 is a rectifier circuit for the generator 8. 10 is an electronic circuit driven by the power of 9, which includes a crystal oscillator and a logic circuit. 11 becomes 8 due to the output of 10
This is a circuit that controls the current of the

FIG. 3 shows a control circuit block diagram of one application example of the present invention. In FIG. 6, 23 is a coil of an electromagnetic generator.

The output of the coil is rectified by a 12.13(1)f iode. 14 is a smoothing capacitor. 15 is a crystal oscillator driven by this power supply, which serves as a time standard signal.

Reference numeral 16 denotes a frequency divider which performs division to a frequency corresponding to a predetermined rotation of the generator. 17 is an up/down counter, which counts the differential signal of the generator obtained from 18° 19 as up, and counts the signal of the branch unit 16 as down. 2
0 is a code identification circuit, and if the signal of 17 is positive, 2
1 transmission gate is turned on, and 22 resistors are connected in parallel between the power supplies.

This is a mechanism in which a rotor with magnetic poles is rotated by the torque transmitted from the barrel through the 23 coils, and the operation will be explained below. The locus of rotation around a circumference of 1 crn from the narrow end of the rotor is expressed as a mata. Let M be the mass obtained by isometrically converting the total mass moving with the rotor onto this trajectory. Let F be the acceleration force on this trajectory transmitted from the barrel.

Let C be the transmission efficiency from the barrel, and let η be the viscous resistance that is approximately proportional to the speed. Let K be the electromagnetic resistance coefficient. The equation of motion of the rotor at this time is Mχ=OF-(K+η) Since the alternating magnetic flux change is proportional to λ, if the effective power generation coefficient of the system is L, the effective electromotive force ■θ is V e = L X Equivalent resistance of the circuit system Let R be the energy consumption,
'V2e -7R= (Li)z/R=, r i2 The electromagnetic braking force is approximately ・L2・XX=-X Bearing=constant=S, so MM=aF-
(Upper 2 + η) do. When the closed circuit resistance is decreased, the current increases inversely. Power consumption is the product of the square of the current and the resistance, and the mechanical resistance divided by the speed acts,
In other words, the speed can be controlled by closed circuit resistance.

The transmission gate shown in Fig. 3 performs switching to obtain R on average in contrast to F, which changes due to changes in the barrel.

FIG. 4 shows a perspective view of an applied example of the generator. 24 is the rotor made of paulownia. The aforementioned storage pinion is rotated by the torque transmitted from 25. 27 is a permanent magnet having magnetic poles at the top and bottom. 26 and 28 are rotors made of high magnetic permeability material whose center portions are in close contact with the magnets. Each is divided into multiple poles to create opposing patterns. As a result, if the magnetization at the tip of 26 is set to N pole, the tip of 28 becomes S pole and magnetic flux is generated. 29 is Figure 3 2
Although the coil corresponds to No. 3, it is also possible to improve the electromotive force by arranging a plurality of zero coils on the same plane, whose penetrating magnetic flux changes over time to generate electricity as the rotor rotates.

By applying the present invention, a highly reliable, high-precision watch that does not require battery replacement or a chemical capacitor can be easily obtained.

The present invention can be widely applied as a low-power electronic circuit power source. Of course, the present invention is not limited to wristwatches, but can also be applied to clocks and the like.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional timepiece. FIG. 2 is a block diagram of an application example of the present invention. FIG. 3 is a block diagram of an application example of the present invention. Figure 4 is a perspective view of a generator according to an application example of the present invention. Applicant: Suwa Seikosha Co., Ltd. Agent Patent Attorney Mogami Vines/Figure

Claims (1)

[Claims] A watch that has a mechanism for accumulating mechanical energy, a wheel train that supplies energy from the accumulating mechanism, and a generator that regulates the speed of this wheel train, and that also has the following mechanisms: (1) It has a crystal oscillator and an electronic circuit that are driven by electrical energy obtained from the power generation mechanism. (2) The electronic circuit has a mechanism for braking the generator.