JPH11101878A - Electronic control type mechanical timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electronic control type mechanical timepiece the duration of which can be prolonged while the whole size and the thickness of the clock are reduced without deteriorating the accuracy. SOLUTION: In a clock the time indicating accuracy of which is secured by controlling the rotating speed of a spiral spring-driven AC generator 20 by means of a rotating speed control section 50, a rectifier circuit 30 which can output DC voltages of different values in multiple stages by switching its rectification system, for example, from a half-wave rectification system to a double rectification system is provided. Since the output voltage of the rectifier circuit 30 rises and the input voltage of the control section 50 is secured, the decline of the rotating speed of the generator 20 is admitted during braking. Therefore, the size of the clock can be reduced and the duration of the timepiece can be prolonged, because it is not required to secure the inertial mass of a rotor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling the number of revolutions of a generator by converting the driving force generated by a driving force source such as a mainspring into electric power by a generator and operating the rotation control means with the electric power. Accordingly, the present invention relates to an electronically controlled mechanical timepiece in which the time indication accuracy of the hands driven by the driving force source is improved.

[0002]

2. Description of the Related Art In recent years, as a mechanical timepiece that rotates a hand with a mainspring, a generator is driven by mechanical energy generated when the mainspring is opened, and a quartz oscillator is driven by electric energy obtained by the generator. -Controlled mechanical timepiece that drives a rotation control circuit provided with
Is known.

In such an electronically controlled mechanical timepiece, the quartz type rotation control circuit controls the rotation speed of the generator connected to the mainspring, so that the time indication accuracy of the hands driven by the mainspring can be significantly improved. .

[0004] Here, the driving force of the mainspring gradually decreases from a state in which it is completely caught, and the rotation of the generator tends to gradually slow with the passage of time. , The rotational speed can be maintained at a constant speed.

[0005] Since the torque required to drive the generator increases in accordance with the winding current flowing through the winding of the generator, the rotation of the generator is braked by increasing the winding current. It is possible to call.

[0006] Conventional rotation control circuits include the following:
It has been known.

The winding current is periodically and instantaneously increased so that instantaneous braking is intermittently applied to the rotation of the generator, and the required power is stored in a capacitor while braking is not applied. Rotation control circuit (Japanese Unexamined Patent Publication No. Sho 62
-255889).

[0008] A rotation control circuit (see Japanese Patent Application Laid-Open No. Hei 8 (1996)) wherein a half cycle of one cycle of the AC output taken from the AC generator is used for braking the generator, and the power required for the remaining half cycle is stored in a capacitor. -36072).

A booster circuit that boosts the output voltage of the generator so that normal operation is ensured even when the winding amount of the generator is small and the output voltage of the generator is lower than the operating voltage of the rotation control circuit. A rotation control circuit having a reduced number of windings to reduce the size of the generator (Japanese Patent Application Laid-Open No. H08-1012)
No. 84).

[0010] In the electronically controlled mechanical timepiece described in (1) to (5) above, the current flows through a load resistor provided on the output side of the generator, thereby increasing the winding current of the generator and causing the generator to rotate. Braking is applied.

Since braking is applied in this manner, during braking, the voltage drop of the winding resistance of the generator increases, and the output voltage decreases. Then, during braking, if an external force in the direction of suppressing the rotation speed of the generator is applied due to an impact or the like, the rotation speed decreases, the output voltage of the generator further decreases, and the voltage at which the rotation control circuit operates normally. Cannot be secured, and accuracy may be reduced.

For this reason, the inertia mass of the rotor of the generator is sufficiently ensured so that the rotation speed of the generator is not reduced even when an external force is applied due to an impact or the like during braking, and the rotation control circuit has a predetermined voltage value or more. The voltage is always applied.

[0013]

However, in the above-mentioned electronically controlled mechanical timepiece, since the inertial mass of the rotor must be sufficiently ensured, the mechanical energy consumed by the rotor is large.

For this reason, there is a problem that it is difficult to extend the duration of the operation of the timepiece while reducing the size and thickness of the entire timepiece without deteriorating the accuracy.

An object of the present invention is to reduce the accuracy without losing accuracy.
An object of the present invention is to provide an electronically controlled mechanical timepiece whose duration is extended while reducing the size and thickness of the entire timepiece.

[0016]

According to the present invention, there is provided a driving force source for accumulating a mechanical driving force as a displacement of an elastic member, and a rotor rotated by the driving force source. An electronic control type comprising: an AC generator that converts electric power, a wheel train that transmits a driving force generated by the driving force source to the AC generator, and a rotation control unit that controls a rotation speed of the rotor. A mechanical timepiece, wherein the rotation control means converts the AC power generated by the AC generator into DC power, and outputs a DC voltage having a different voltage in multiple stages by switching a rectification method; and A rotation speed control unit that switches a rectification method of the rectification unit according to the rotation speed of the rotor.

According to the present invention, the rectification method for outputting a higher DC voltage has a larger amount of electric charge stored in the capacitor in the circuit, and therefore the rectification method is switched from a low DC voltage to a high DC voltage. Then, the current output from the generator, that is, the winding current increases. For example, simply switching from the half-wave rectification method to the full-wave rectification method increases the winding current of the generator.

Therefore, the switching of the rectifying method increases the winding current of the generator, so that the rotation of the generator can be braked by the switching of the rectifying method.

The braking by the switching of the rectifying method is different from the braking by applying a current to the load resistance. During the braking, the output voltage of the rectifying circuit increases, so that the voltage drop of the winding resistance increases. Even if the output voltage of the generator drops,
The voltage input to the rotation control means does not drop below the voltage level at which the rotation control means operates normally.

For this reason, even if an external force is applied due to an impact or the like during braking and the rotation speed of the generator decreases, the voltage level to the rotation control means does not decrease, and the rotation control means operates normally. As a result, accuracy is not lost, and it is not necessary to secure an inertial mass for external force measures, so that the entire watch can be made smaller and thinner, and the duration of the watch can be easily extended. become.

If the power supply voltage fluctuates in the direction of increase in circuit design, it is relatively easy to take countermeasures. The malfunction of the control means can be prevented beforehand.

In the above, the rectifying section has a switching element for switching the connection of each of the electric elements constituting the rectifying section, and the rectification method having different output voltages can be formed by switching the connection of the electric elements. And a circuit switching type in which the rectifying unit has a plurality of rectifying circuits of different rectifying systems with different output voltages and a switching element for switching connection to these rectifying circuits. Can be adopted.

If an element switching type rectifier is employed, a plurality of rectification systems can be assembled with a minimum number of electric elements, so that the timepiece can be further reduced in size.

If a circuit switching type rectifier is employed, it is sufficient to provide a switching element for switching connection with a plurality of rectification methods, so that the number of switching elements is reduced and
The number of switching elements that operate at the time of the switching operation is also reduced, and the speed of the switching operation can be increased.

Also, a motor is provided which is mechanically connected to the driving force source and increases the displacement of the elastic member to increase the accumulation of the mechanical driving force. It is desirable that the motor be electrically connected to the next side and that the rotation speed control unit perform a start operation and a stop operation of the electric motor.

[0026] In this case, the starting of the motor causes
A strong braking force can be applied to the generator, and even if a strong external force is applied due to a strong impact, etc., and the rotation speed of the generator may increase significantly, a strong braking force can be obtained. Speed rise is prevented beforehand,
The accuracy of the time indication of the clock is not impaired.

In addition, the activated electric motor accumulates driving force in the driving force source and replenishes the mechanical energy of the driving force source, so that the duration of the timepiece can be extended from this point as well.

Further, the rectifying section can be switched to at least two of a half-wave rectification system, a full-wave rectification system, a double voltage rectification system, a triple voltage rectification system and a quadruple voltage rectification system. It is desirable.

By switching between two of these rectification methods, it is possible to obtain different levels of DC voltage with a simple circuit and to minimize the consumption of electrical energy. So from this point,
The size of the watch can be reduced and its duration can be extended.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show an electronically controlled mechanical timepiece according to this embodiment. This electronic control type mechanical timepiece has a mainspring 1a, a barrel gear 1b, a barrel barrel 1c and a barrel lid 1d which are driving force sources for accumulating mechanical driving force.
Is provided with the barrel car 1 provided with.

The mainspring 1a has a barrel gear 1 at the outer end.
b, and the inner end is fixed to barrel barrel 1c. The barrel case 1c is supported by the main plate 2 and the train wheel bridge 3, and is fixed by a square hole screw 5 so as to rotate integrally with the square hole wheel 4.

The barrel gear 1b is engaged with the rotor 12 of the generator 20 via the wheel train 6 composed of a plurality of gears 7-11. The rotation of the barrel gear 1b is sequentially increased in speed by a second wheel & pinion 7, a third wheel & pinion 8, a fourth wheel & pinion fifth wheel, and a sixth wheel & pinion 11, and transmitted to the rotor 12, and finally, to 126, The speed has been increased 000 times.

The center wheel & pinion 7a is fixed to the center wheel & pinion 7a, the minute hand 13 is fixed to the center pin & pinion 7a, and the second hand 14 is fixed to the center wheel & pinion 9 respectively.

Here, the second wheel 7 is rotated at 1 rph,
To rotate the fourth wheel 9 at 1 rpm, the rotor 12
Is controlled by a later-described rotation control means so that the rotation speed becomes a predetermined rotation speed.

The generator 20 includes a stator 15 and a coil block 16 in addition to the rotor 12. The rotor 12 includes a rotor magnet 12a, a rotor pinion 12b, and a rotor inertial disk 12c.

The rotor inertia disk 12 c stores the driving force from the barrel wheel 1 as inertia force, and reduces the rotation speed fluctuation of the rotor 12 with respect to the torque fluctuation of the barrel wheel 1. The stator 15 has a stator coil 15b in which a winding is wound around a stator body 15a by 40,000 turns.

The coil block 16 has a coil 16b in which winding is wound around a magnetic core 16a by 110,000 turns.

Here, the stator body 15a and the magnetic core 16
"a" is made of a ferromagnetic material having a high magnetic permeability such as PC permalloy. The stator coil 15b and the coil 16b are connected in series so as to have the same polarity.

The ratchet wheel 4 is engaged with a not-shown hammer so as to rotate clockwise but not counterclockwise.

The square wheel 4 has a plurality of gears 17a to 17c.
, And an automatic winding mechanism or a manual winding mechanism (not shown) is engaged. In addition, since a general thing is employ | adopted about an automatic winding mechanism or a manual winding mechanism, the description is abbreviate | omitted.

The electric motor 18 includes a rotor 18a that rotates by input electric power, and a coil 1 having a magnetic core 18b wound with a coil.
8c.

The rotation of the rotor 18a is controlled by the gears 17a to 17
The speed is sequentially increased at c and transmitted to the square wheel 4 of the barrel wheel 1. Thus, the mainspring 1a is caught by the driving of the electric motor 18.

FIG. 4 shows the rotation control means of the electronically controlled mechanical timepiece.

In FIG. 4, the rotation control means includes a generator 2
A rectifier circuit 30 as a rectifier for converting AC power from 0 to DC power, and a rotor 12 as a rotor of the generator 20.
A rotation speed control unit 50 for controlling the rotation speed of the motor and the electric motor 18 described above. Here, the rotation speed control unit 50 and the electric motor 18 are connected in parallel to the secondary side of the rectifier circuit 30. The electric motor 18 includes a switching element 31 for turning on and off the DC power of the rectifier circuit 30.
And is connected to the rectifier circuit 30 via the.

An oscillation circuit 51 for transmitting a predetermined periodic signal by a quartz oscillator (not shown) to the rotation speed control unit 50,
A frequency dividing circuit 52 for dividing the period signal from the oscillation circuit 51 to output a reference period signal; and detecting the number of revolutions of the rotor 12 from the AC power of the generator 20, and A number-of-revolutions detecting circuit 53 for outputting a number signal, a reference period signal from the frequency dividing circuit 52 and a number-of-revolutions detecting circuit 5
A rotation speed comparison circuit 54 for comparing the rotation speed signals from
A rotation speed operation circuit 55 that outputs an operation signal to the rectifier circuit 30 and the switching element 31 based on the comparison result of the rotation speed comparison circuit 54 is provided.

The rotation number comparison circuit 54 compares the rotation number signal with the reference period signal and outputs a deviation signal obtained by subtracting the reference period signal from the rotation number signal.
5 is output.

The rotation speed operation circuit 55 outputs an operation signal stepwise according to the magnitude of the deviation signal in order to eliminate the deviation between the rotation speed signal and the reference period signal.

Specifically, from the rotation speed operation circuit 55,
While the difference between the rotation speed signal and the reference period signal is small, a multi-step voltage switching signal to the rectifier circuit 30 is sequentially output as an operation signal. When the difference becomes large to some extent, a closing signal is sent to the switching element 31. Is output.

Note that the rotation speed control unit 50
It is designed to operate normally even if the power supply voltage from the power supply fluctuates in a direction to increase.

FIG. 5 shows a specific circuit of the rectifier circuit 30. The rectifier circuit 30 can switch the output voltage in three stages.

That is, in FIG. 5, the rectifier circuit 30 has input terminals 32a, 32 to which the generator 20 is connected.
b and the output terminal 3 to which the rotation speed control unit 50 and the like are connected.
3a and 33b are provided.

A capacitor 34, a switching element 35 and a diode 36 are connected in series between the terminals 32a and 33a. Of these, diode 3
The negative electrode 6 is connected to the terminal 33a.

A jumper circuit 37 for short-circuiting the ends of the capacitor 34 and the switching element 35 is connected in parallel to both ends of the capacitor 34 and the switching element 35. This jumper circuit 37
Is provided with a switching element 38. When the switching element 38 is closed, the ends of the capacitor 34 and the switching element 35 are short-circuited.

A switching element 39, a capacitor 40 and a diode 41 are connected in series between the terminals 32a and 33b. Of these, diode 4
1 has a positive electrode side connected to the terminal 33b.

Two capacitors 42 and 43 are connected in series between the terminals 33a and 33b. The capacitor 4 is located at both ends of the capacitor 43.
A jumper circuit 44 for short-circuiting the end of the third circuit 3 is connected in parallel. The jumper circuit 44 is provided with a switching element 45. When the switching element 45 is closed, the end of the capacitor 43 is short-circuited.

The terminal 32b is connected to the terminal 33a and the terminal 33.
b, the connection point 46 of the capacitors 42 and 43
a.

The terminal 32b is connected via a switching element 47 and a diode 48 to a connection point 46b between the switching element 35 and the diode 36 provided between the terminal 32a and the terminal 33a.
These switching element 47 and diode 48
Are connected in series, and the diode 48 has a positive electrode connected to the terminal 32b.

Further, the terminal 32b is connected via a diode 49 to a connection point 46c between the capacitor 40 and the diode 41 provided between the terminal 32a and the terminal 33b. The diode 49 has a negative electrode side connected to the terminal 32b.

Here, when the voltage switching signal from the rotation speed comparison circuit 54 is not input, the switching element 3
8, 45 are closed and switching elements 35, 39, 47 are open. The rectifier circuit 30 in this state is of a half-wave rectification type that rectifies a half-wave of the AC voltage generated by the generator 20, as shown in FIG.

When the first voltage switching signal from the rotational speed comparison circuit 54 is being input, the switching elements 35, 45, 47 are closed and the switching elements 38, 39 are closed.
Is open. The rectifier circuit 30 in this state is shown in FIG.
As shown in FIG. 2, a half-wave double rectification method is used in which a half-wave of the AC voltage generated by the generator 20 is double-rectified. In this state, a higher DC voltage is output than in the case of the half-wave rectification method, and the winding current of the generator 20 is increased.

Further, when the second voltage switching signal is input from the rotation speed comparison circuit 54, the switching elements 35, 39 and 47 are closed and the switching elements 38 and 4 are closed.
5 is open. The rectifier circuit 30 in this state is shown in FIG.
As shown in (C), a full-wave quadruple rectification method is used in which the full-wave AC voltage generated by the generator 20 is quadrupled. In this state, a higher DC voltage is output than in the case of the half-wave double rectification method, and the winding current of the generator 20 is further increased.

In this embodiment, when the rotor 12 of the generator 20 is rotating at a rotation speed within a predetermined range, no deviation signal is output from the rotation speed comparison circuit 54 to the rotation speed operation circuit 55. Since the rectifier circuit 30 is of the half-wave rectification type, the winding current of the generator 20 is small, and a minimum braking force is applied to the rotor 12 of the generator 20.

When the rotation speed of the rotor 12 of the generator 20 is out of the predetermined range, but is lower than the first upper limit of the predetermined rotation speed, the rotation speed comparison circuit 54 A deviation signal is output to the
Outputs a first voltage switching signal to rectifier circuit 30.
Since the rectifier circuit 30 that receives the first voltage switching signal uses the half-wave double rectification method, the winding current of the generator 20 increases, and the braking force applied to the rotor 12 of the generator 20 also increases.

When the rotation speed of the rotor 12 of the generator 20 is higher than the first rotation speed upper limit but lower than the preset second rotation speed upper limit, the rotation speed comparison circuit 54 The deviation signal output to the operation circuit 55 increases, and the second voltage switching signal is output from the rotation speed operation circuit 55 to the rectifier circuit 30. Since the rectifier circuit 30 that receives the second voltage switching signal uses the full-wave quadruple rectification method, the winding current of the generator 20 further increases, and the braking force applied to the rotor 12 of the generator 20 further increases. I do.

When the rotation speed of the rotor 12 of the generator 20 is higher than the second rotation speed upper limit, the deviation signal output from the rotation speed comparison circuit 54 to the rotation speed operation circuit 55 is further increased. Switching element 31 from circuit 55
Is output. The switching element 31 that has received the closing signal starts the electric motor 18, so that the generator 2
0 winding current is significantly increased and the rotor 12
The braking force applied to the wheel also increases significantly.

As described above, as the rotation speed of the rotor 12 of the generator 20 increases, the braking force applied to the rotor 12 also increases, so that the constant value control for rotating the rotor 12 at a predetermined rotation speed can be performed with high accuracy. I can do it.

According to this embodiment, the following effects can be obtained.

That is, by changing the rectification method and increasing the output voltage of the rectification circuit 30, the winding current of the generator 20 is increased stepwise, so that the rotation speed of the rotor 12 of the generator 20 is reduced. As the speed increases, the braking force applied to the rotor 12 can be increased, the rotation speed of the rotor 12 can be controlled with high accuracy, and sufficient time indication accuracy can be secured.

In addition, braking by switching of the rectification method is as follows.
Unlike braking by passing a current through a load resistor, the output voltage of the rectifier circuit 30 increases during braking, so that the generator 2
Even if the voltage drop of the winding resistance of 0 increases and the output voltage of the generator 20 decreases, the input voltage to the rotation speed control unit 50 drops below the voltage level at which the rotation control unit 50 operates normally. From this point, sufficient time indication accuracy can be secured.

Further, according to the braking by switching of the rectifying method, an external force is applied by an impact or the like during the braking, and the generator 2
0, the voltage level to the rotation speed control unit 50 is secured and the rotation speed control unit 50 operates normally. Therefore, the inertial mass of the rotor 12 is reduced to prevent external force. Therefore, it is not necessary to secure the time, so that the size and thickness of the entire timepiece can be reduced, and the duration of the timepiece can be extended.

The switching elements 35, 38, 39, 45, 47 for switching the connections of the capacitors 34, 40, 42, 43 and the diodes 36, 41, 48, 49, which are the electric elements constituting the rectifier circuit 30, are provided. Provided,
By switching the connection of these electric elements, it is possible to form a rectification method having a different output voltage, so that a plurality of rectification methods can be assembled with a minimum number of electric elements. Can be reduced in size.

Further, an electric motor 18 is provided which is mechanically connected to the mainspring 1a and which winds the mainspring 1a and accumulates driving force.
Is electrically connected to the secondary side of
However, since the starting operation and the stopping operation of the electric motor 18 are performed, the starting current of the electric motor 18 significantly increases the winding current of the generator 20, so that a strong braking force can be applied to the rotor 12.

Since a strong braking force is applied to the rotor 12, even if a large external force is applied due to a strong impact or the like and the rotation speed of the generator 20 may increase significantly, the rotation speed of the generator 20 may be increased. Since the rise is prevented beforehand, the time indication accuracy of the clock can be sufficiently ensured also from this point.

Further, when the electric motor 18 is started, the driving force is accumulated in the mainspring 1a, and the mechanical energy of the mainspring 1a increases, so that the duration of the timepiece can be extended from this point as well.

Further, since the rectifier circuit 30 which can be switched to any one of the half-wave rectification system, the half-wave double voltage rectification system and the full-wave quadruple voltage rectification system is employed, it is possible to use a simple circuit with different levels of DC. The voltage can be obtained, and the consumption of electric energy can be minimized. In this respect, the timepiece can be downsized and the duration can be extended.

The present invention is not limited to the above-described embodiments, but includes modifications and improvements as long as the object of the present invention can be achieved.

For example, the rectifying section is not limited to an element switching type that can form a rectifying system having a different output voltage by switching an electric element of the rectifying section by a switching element. A circuit switching type including a plurality of rectifying circuits in a system and a switching element for switching connection to these rectifying circuits may be used.

If such a circuit switching type rectifier is employed, a switching element for switching a plurality of rectifier circuits may be provided in order to switch the output voltage, so that the number of switching elements is reduced and the number of switching elements is reduced. The number of switching elements that operate at the time of operation is also reduced, and the switching operation can be sped up.

Further, the circuit switching type rectifier is limited to a rectifier circuit that switches to a half-wave rectification system, a half-wave double rectification system, or a full-wave quadruple rectification system and switches the output voltage in three stages. Instead, as shown in FIG. 7, a rectifier circuit 30a that switches between a double rectification system, a triple rectification system, and a full-wave quadruple rectification system by turning on and off the switching elements 35a and 38a may be used.

In FIG. 7, the switching element 3
The movable piece 35b of the switching element 38a is brought into contact with the contact 38c.
A double rectification system is formed when it is brought into contact with c.

The movable piece 3 of the switching element 35a
When the contact 5b is brought into contact with the contact 35d and the movable piece 38b of the switching element 38a is brought into contact with the contact 35c, a triple rectification system is formed.

Further, when the movable piece 35b of the switching element 35a is brought into contact with the contact 35d and the movable piece 38b of the switching element 38a is brought into contact with the contact 38d, a quadruple rectification system is formed.

In short, half-wave rectification, full-wave rectification,
Any type can be used as long as it can form a plurality of types of rectification methods such as a double voltage rectification method, a triple voltage rectification method, and a quadruple voltage rectification method, and the type and number of rectification methods and the number of switching voltage stages are appropriately adopted in implementation. do it.

The braking force increasing means for generating a strong braking force is not limited to the electric motor connected to the secondary side of the rectifying unit, but may be a variable resistance load connected to the secondary side of the rectifying unit. If an electric motor is adopted as in the above embodiment,
Driving the electric motor during braking increases the mechanical energy of the driving force source, so that the effect of extending the duration of the timepiece can be obtained.

[0086]

As described above, according to the present invention, the timepiece can be reduced in size and thickness and the duration can be extended without loss of accuracy.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a main part of the embodiment.

FIG. 3 is another sectional view showing a main part of the embodiment.

FIG. 4 is a block diagram showing rotation control means of the embodiment.

FIG. 5 is a circuit diagram showing a rectifier of the embodiment.

FIG. 6 is a diagram for explaining voltage switching of the rectifier of the embodiment.

FIG. 7 is a view similar to FIG. 5, showing a modification of the present invention.

[Explanation of symbols]

 1a Spring as a drive power source 6 Wheel train 12 Rotor as a rotor 18 Motor 20 AC generator 30, 30a Rectifier circuit 34, 40, 42, 43 Rectifier 34, 40, 42, 43 Capacitors 36, 41, 48, 49 as electric elements Diodes as electric elements 35, 38, 39, 45, 47 Switching elements 35a, 38a Switching elements 50 Revolution control section

Claims (5)

[Claims] 1. An AC generator having a driving force source for accumulating mechanical driving force as displacement of an elastic member, a rotor driven by the driving force source, and converting the driving force into electric power. An electronically controlled mechanical timepiece comprising: a wheel train transmitting a driving force generated by the driving force source to the AC generator; and rotation control means for controlling a rotation speed of the rotor. The means converts AC power generated by the AC generator into DC power, and a rectifying unit capable of outputting DC voltages having different voltages in multiple stages by switching a rectification method, and according to a rotation speed of the rotor. An electronically controlled mechanical timepiece comprising: a rotation speed control unit that switches a rectification method of the rectification unit. 2. The electronically controlled mechanical timepiece according to claim 1, wherein the rectifying unit has a switching element for switching connection of each of the electric elements constituting the rectifying unit, and connects the electric elements. An electronically controlled mechanical timepiece characterized by being capable of being switched to form a rectification method having a different output voltage. 3. The electronically controlled mechanical timepiece according to claim 1, wherein the rectifying unit includes a plurality of rectifying circuits of different rectifying systems having different output voltages, and a switching element for switching connection to the rectifying circuits. And an electronically controlled mechanical timepiece. 4. An electronically controlled mechanical timepiece according to claim 1, wherein said timepiece is mechanically connected to said driving force source, and has an increased displacement of said elastic member. An electric motor that increases the accumulation of mechanical driving force is electrically connected to a secondary side of the rectifying unit, and the rotation speed control unit performs a start operation and a stop operation of the electric motor. An electronically controlled mechanical watch. 5. The electronically controlled mechanical timepiece according to claim 1, wherein the rectifying unit includes a half-wave rectification system, a full-wave rectification system, a double voltage rectification system, and a triple voltage rectification system. An electronically controlled mechanical timepiece characterized in that it can be switched to at least two of a rectification method and a quadruple voltage rectification method.