JP3601258B2 - Electronically controlled mechanical clock - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
In the present invention, the mechanical energy when the mainspring is opened is converted into electric energy by the generator, and the rotation control means is operated by the electric energy to control the rotation cycle of the generator, thereby being fixed to the wheel train. The present invention relates to an electronically controlled mechanical timepiece that accurately drives a hand.
[0002]
[Prior art]
A pointer fixed to the wheel train by converting mechanical energy when the mainspring is released into electric energy by a generator and activating a rotation control means by the electric energy to control a current value flowing through a coil of the generator. An electronically controlled mechanical timepiece that accurately drives and displays the time is disclosed in Japanese Patent Application Laid-Open No. H8-5758.
[0003]
At this time, the electric energy from the generator is once supplied to the smoothing capacitor, and the circuit control means is driven by the electric power from this capacitor. The capacitor generates an AC electromotive force synchronized with the rotation cycle of the generator. , There is no need to maintain power for enabling operation of the circuit control means including the IC and the crystal oscillator for a long period of time. For this reason, conventionally, a capacitor having a relatively small capacitance capable of operating an IC or a quartz oscillator for about several seconds has been used.
[0004]
This electronically controlled mechanical timepiece is characterized in that it does not require a motor because the mainspring is driven by a mainspring as a power source, has a small number of parts, and is inexpensive. In addition, only a small amount of electrical energy required to operate the electronic circuit was required, and the watch could be operated with low input energy.
[0005]
[Problems to be solved by the invention]
However, the electronically controlled mechanical timepiece has the following problems. That is, when performing the hand setting (time setting) which is usually performed by pulling out the crown, the hour, minute, and second hands are stopped so that the time can be accurately set. Since stopping the hands would stop the train, the generator was also stopped.
[0006]
Therefore, while the input of the electromotive force from the generator to the smoothing capacitor is stopped, the IC continues to be driven, so that the electric charge stored in the capacitor is discharged to the IC side and the terminal voltage is reduced. The circuit control means also stopped, and the capacitor was completely discharged.
[0007]
When the crown is pushed in after the needle has been set and the generator starts to rotate, the capacitor that is discharged and has a voltage of 0 is replaced with a voltage that reaches the drive start voltage of the circuit control means (the voltage at which the IC can be driven). It takes time to charge the battery, during which time the IC does not operate, and there is a problem that accurate time control cannot be performed.
[0008]
An object of the present invention is to reduce power consumption from a capacitor when a generator such as needle adjustment is stopped, and to quickly drive a rotation control unit with the capacitor when the generator starts operating, thereby saving time. An object of the present invention is to provide an electronically controlled mechanical timepiece capable of reducing a control error.
[0009]
[Means for Solving the Problems]
An electronically controlled mechanical timepiece according to the present invention includes a mainspring, a generator for converting mechanical energy of the mainspring transmitted via a train wheel into electric energy, a pointer coupled to the wheel train, and the converted electric energy. An electronically controlled mechanical timepiece having a rotation control means for controlling a rotation cycle of the generator driven by a power supply, and a capacitor for temporarily storing electric energy from the generator and supplying the energy to the rotation control means. Power supply control means for interrupting supply of electric energy from the capacitor to the rotation control means when the generator is stopped.
[0010]
According to the present invention, when the generator is stopped at the time of hand setting or the like, the supply of electric energy from the capacitor to the rotation control means is cut off by the power supply control means. Are maintained in a charged state.
[0011]
Therefore, when returning from the hand setting operation, the electric power can be supplied from the condenser to the rotation control means and the rotation control means can be operated until the generator is sufficiently started up. An error due to a time lag can be eliminated, and an error in time control at the time of hand adjustment can be reduced.
[0012]
At this time, the power supply control means is constituted by a switch connected in series with the capacitor, connected when the generator is operating, and cut off when the generator is stopped. Is preferred.
[0013]
The power supply control means may be an electric switch, but is preferably a mechanical switch. When an electric switch is used, power supply may not be completely shut off as in a mechanical switch. However, even in such a case, only a leakage current (about 1 nA) of a silicon diode constituting the electric switch is used. Since there is no discharge, the switching effect of the switch is almost the same as that of the mechanical switch. However, it is preferable to use a mechanical switch because the supply of power can be completely shut off.
[0014]
Further, it is preferable that an auxiliary capacitor is connected in parallel to the capacitor. If the auxiliary capacitor is provided, even if the switch causes chattering, for example, when a shock is applied to the timepiece, power can be continuously supplied from the auxiliary capacitor, and the rotation control means is stopped by chattering. Can be prevented.
[0015]
Furthermore, the auxiliary capacitor has a smaller capacity than the capacitor, and the capacitor is connected to the power supply control unit via a switching circuit in which a resistor and a switch for switching are connected in parallel. The changeover switch is configured to be connected when the terminal voltage of the capacitor has increased to a level at which the rotation control unit can be driven, and to be disconnected when the terminal voltage of the capacitor has decreased to a level at which the rotation control unit can be driven. Is preferred.
[0016]
In this case, the capacitor may be connected to the power supply control unit via a switching circuit in which a diode and a switching switch are connected in parallel, instead of a switching circuit including a resistor and a switching switch.
[0017]
If an auxiliary capacitor with a small capacity is provided, the circuit control means can continue to be driven even when chattering occurs, and even if the terminal voltage of the main capacitor is reduced due to self-discharge etc. When the generator starts to operate after returning, the auxiliary capacitor with a small capacity is charged first and quickly reaches the drive start voltage of the rotation control means. It is driven quickly, and the startability can be improved.
[0018]
Further, since a switching circuit including a switch and a resistor or a switch and a diode is provided, by setting the resistance value and the arrangement of the diode, the amount of power supplied to the capacitor when the generator starts up, that is, the auxiliary capacitor side Can be set, and the time until each capacitor is charged can be set.
[0019]
According to a second aspect of the invention, there is provided an electronically controlled mechanical timepiece comprising: a mainspring; a generator for converting mechanical energy of the mainspring transmitted through the wheel train into electric energy; a pointer coupled to the wheel train; A rotation control means driven by the electric energy to control a rotation cycle of the generator, wherein the electric energy from the generator is temporarily stored and supplied to the rotation control means. A power supply control unit that includes a capacitor and reduces the amount of electric energy supplied from the capacitor to the rotation control unit by reducing power consumption in the rotation control unit when the generator is stopped. It is characterized by having.
[0020]
According to the present invention, when the generator is stopped at the time of hand adjustment or the like, the amount of power consumption in the rotation control means is reduced by the power supply control means. Electric energy supplied to the control means can be reduced.
[0021]
Therefore, the capacitor is not completely discharged for a time sufficient to perform the hand adjusting operation, and when returning from the hand adjusting operation, the charged capacitor can be charged to a certain extent. The time required for charging the rotation control means to a voltage at which the rotation control means can be driven can be shortened, and errors due to a time lag until the rotation control means is activated can be reduced.
[0022]
At this time, it is preferable that the power supply control unit is configured to cut off a part of the circuit in the rotation control unit so as to reduce the power consumption in the rotation control unit.
[0023]
Further, in each of the above inventions, it is preferable that each capacitor is a highly reliable multilayer ceramic capacitor that does not contain an electrolyte.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0025]
FIG. 1 is a plan view showing a main part of an electronically controlled mechanical timepiece of the present embodiment, and FIGS. 2 and 3 are sectional views thereof.
[0026]
The electronically controlled mechanical timepiece includes a barrel wheel 1 including a mainspring 1a, a barrel gear 1b, a barrel barrel 1c, and a barrel lid 1d. The outer end of the mainspring 1a is fixed to the barrel gear 1b, and the inner end is fixed to the barrel barrel 1c. The barrel barrel 1c is supported by the main plate 2 and the train wheel bridge 3, and is fixed by a square screw 5 so as to rotate integrally with the square wheel 4.
[0027]
The square wheel 4 meshes with a hammer 6 so as to rotate clockwise but not counterclockwise. The method of rotating the square wheel 4 in the clockwise direction and winding the mainspring 1a is the same as the automatic winding or the manual winding mechanism of the mechanical timepiece, and thus the description is omitted.
[0028]
The rotation of the barrel gear 1b is increased by a factor of 7 to the second wheel 7 and is sequentially increased by a factor of 6.4 to the third wheel 8 and is increased by 9.375 times to the fourth wheel 9 to triple the speed. Then, the speed is increased by a factor of 10 to the fifth wheel & pinion 10 to the sixth wheel 11 and is increased by a factor of 10 to the rotor 12 to increase the speed by a total of 126,000 times.
[0029]
A pinion pinion 7a is fixed to the center wheel & pinion 7a, a minute hand 13 is fixed to the pinion pinion 7a, and a second hand 14 is fixed to the pinwheel & pinion 9 respectively. Accordingly, in order to rotate the second wheel & pinion 7 at 1 rpm and the fourth wheel & pinion 9 at 1 rpm, the rotor 12 may be controlled to rotate at 5 rpm. At this time, the barrel gear 1b becomes 1/7 rph.
[0030]
This electronically controlled mechanical timepiece includes a generator 20 including a rotor 12, a stator 15, and a coil block 16. The rotor 12 includes a rotor magnet 12a, a rotor pinion 12b, and a rotor inertial disk 12c. The rotor inertia disk 12 c is for reducing the fluctuation of the rotation speed of the rotor 12 with respect to the fluctuation of the driving torque from the barrel car 1. The stator 15 is such that a 40,000-turn stator coil 15b is wound around a stator body 15a.
[0031]
The coil block 16 is formed by winding a coil 16b of 110,000 turns around a magnetic core 16a. Here, the stator body 15a and the magnetic core 16a are made of PC permalloy or the like. Further, the stator coil 15b and the coil 16b are connected in series so that an output voltage is obtained by adding the respective generated voltages.
[0032]
Next, a control circuit of the electronically controlled mechanical timepiece will be described with reference to FIG.
[0033]
The AC output from the generator 20 is boosted and rectified through a boosting rectifier circuit including a boosting capacitor 21 and diodes 22 and 23, and is charged into a smoothing capacitor 30. The rotation control means 50 including the IC 51 and the crystal oscillator 52 is connected to the capacitor 30.
[0034]
When a predetermined voltage capable of driving the IC 51 and the crystal oscillator 52, for example, a voltage of 1 V, is stored in the capacitor 30, the IC 51 and the crystal oscillator 52 are driven by the stored power and flow through the coil of the generator 20. The amount of current is varied to adjust the amount of electromagnetic braking, and the rotation cycle of the generator 20, that is, the pointer is adjusted.
[0035]
As means for varying the amount of current flowing through the coil, the resistance of a load control circuit connected in parallel with both ends of the generator 20 as described in Example 1 of JP-A-8-101284 is varied. A method, a method of changing the number of boosting stages as described in the second embodiment, and the like are effective.
[0036]
This circuit is provided with a switch 40 as power supply control means. As shown in FIGS. 5 and 6, the switch 40 is configured by a switch lever 40 </ b> A that can be connected and disconnected to a wiring 32 to which the capacitor 30 on the circuit board 31 is connected. The switch lever 40A is configured so as to be separated from the wiring 32 when the crown 60 is pulled out for the needle adjusting operation, and to be connected to the wiring 32 when the crown 60 is pushed in.
[0037]
The metal parts such as the switch lever 40A and the ground plane are electrically connected to the ground, which is the reference point of the circuit, and are set to _VDD .
[0038]
In this embodiment, when the crown 60 is pulled out to perform the needle adjustment, the switch lever 40A is separated from the wiring 32, and the switch 40 is disconnected. At the same time, the pointer and the generator 20 also stop. As a result, power is not supplied from the capacitor 30 to the IC 51, and the capacitor 30 is maintained in a charged state.
[0039]
When the crown 60 is pushed in after the needle adjustment is completed, the switch lever 40A is also brought into contact with the wiring 32 and the switch 40 is connected. Then, since power is supplied to the IC 51 from the capacitor 30 that has been maintained in the charged state, the IC 51 is driven at the same time as the crown 60 is pushed in, and the rotation of the generator 20 is controlled by operating the crystal oscillator 52. .
[0040]
Then, when the generator 20 starts up and enters a steady operation, the power from the generator 20 is supplied to the IC 51 via the capacitor 30, and the rotation control of the generator 20 is continuously performed.
[0041]
According to this embodiment, the following effects can be obtained.
[0042]
Since the power supply control means including the switch 40 which is turned on and off in response to the advance / retreat operation of the crown 60 is provided, while the crown 60 is pulled out and the generator 20 is stopped, the electric power is supplied from the condenser 30 to the rotation control means 50 side. Is not supplied, and the terminal voltage of the capacitor 30 can be maintained.
[0043]
For this reason, the rotation control means 50 can be operated immediately after the needle adjustment operation is completed and the generator 20 is started to operate, and there is no time lag until the IC 51 is driven as in the related art. Control errors are reduced, and a more accurate needle adjustment operation can be performed.
[0044]
The switch 40 is composed of a switch lever 40A having one end joined to the crown 60, and the configuration can be simplified. Therefore, the electronically controlled mechanical timepiece of the present embodiment can be manufactured at low cost. Furthermore, only the switch 40 needs to be added as compared with the related art, and there is almost no increase in the manufacturing cost, and the switch can be provided relatively inexpensively.
[0045]
Next, a second embodiment of the present invention will be described. In the following embodiments, the same reference numerals are given to the same or similar components as those in the above-described embodiments, and the description will be omitted or simplified.
[0046]
In the present embodiment, as shown in FIG. 7, a switch 70 for intermittently connecting a main circuit 51A and a power supply side is provided in an IC 51, and this switch 70 is used as power supply control means.
[0047]
In this embodiment, when the crown 60 is pulled out to perform the needle adjustment, the switch 70 is turned off, and at the same time, the hands and the generator 20 are stopped. When the switch 70 is turned off, the main circuit 51A in the IC 51 is disconnected from the power supply line, so that power consumption in the IC 51 is reduced.
[0048]
For this reason, the power consumption supplied from the capacitor 30 to the IC 51 is reduced, and the rate of decrease in the charged amount of the capacitor 30 is suppressed.
[0049]
Then, when the crown adjustment is completed and the crown 60 is pushed in, the switch 70 is connected, and at the same time, the generator 20 starts rotating and starts charging the capacitor 30. At this time, since the power corresponding to the hand setting time (= the power stored in the capacitor 30 when the switch 70 is turned off−the power consumption of the IC 51 per unit time × the hand setting time) is stored in the capacitor 30, The time required to charge the IC 51 to a voltage at which the IC 51 can be driven is shorter than when the capacitor 30 in the completely discharged state is charged.
[0050]
When the capacitor 30 is charged to a voltage at which the IC 51 can be driven, the IC 51 operates the crystal oscillator 52 to control the rotation of the generator 20.
[0051]
According to this embodiment, the following effects can be obtained.
[0052]
Since the power supply control means including the switch 70 that is turned on and off in response to the forward and backward operations of the crown 60 is provided, the main circuit 51A of the IC 51 can be disconnected while the crown 60 is pulled out and the generator 20 is stopped. , IC 51 can be reduced.
[0053]
For this reason, if the needle adjusting operation is completed within a predetermined time, a certain amount of power is left in the capacitor 30. Therefore, when the needle adjusting operation is completed and the generator 20 is operated, compared with the conventional case, Since the capacitor 30 can be charged quickly and the time lag until the drive of the IC 51 can be shortened, errors in time control are reduced, and more accurate hand setting work can be performed.
[0054]
Further, as compared with the related art, it is only necessary to form the switch 70 in the IC 51, and it is possible to provide the switch at a relatively low cost with little increase in the manufacturing cost.
[0055]
Next, a third embodiment of the present invention will be described.
[0056]
In the present embodiment, as shown in FIG. 8, first, an auxiliary capacitor 80 having a smaller capacity than the capacitor 30 and connected in parallel with the capacitor 30 is provided, and between the switch 40 and the capacitor 30. And a switching circuit 83 in which a switching switch 81 and a resistor 82 are connected in parallel.
[0057]
Since the capacitor 30 usually has a capacitance of about 0.5 to 5 μF, the auxiliary capacitor 80 is a power storage unit of about 0.05 to 0.5 μF. The resistor 82 has a resistance value of about 100 MΩ.
[0058]
The switch 81 is turned off when the generator 20 stops and the terminal voltage of the capacitor 30 drops to a voltage at which the rotation control unit 50 cannot be driven, and the generator 20 is operated to drive the rotation control unit 50. It is controlled so that it is connected when the voltage exceeds a certain level.
[0059]
In this embodiment, during normal operation in which the generator 20 is operated, the switch 40 and the changeover switch 81 are turned on, and the power from the generator 20 is temporarily stored in the capacitor 30 and then the rotation control is performed. The rotation of the generator 20, that is, the time control of the hands is performed to the means 50.
[0060]
Here, when the crown 60 is pulled out for performing the needle adjustment, the switch 40 is cut off, and the hands and the generator 20 are also stopped. As a result, power is not supplied from the capacitor 30 to the IC 51, and the capacitor 30 is maintained in a charged state.
[0061]
Then, when the crown adjustment is completed and the crown 60 is pushed in, the switch 40 is connected. At this time, since the terminal voltage of the capacitor 30 is higher than the voltage at which the rotation control means 50 can be driven by being charged, the changeover switch 81 is also connected, thereby maintaining the charged state. Since power is supplied from the capacitor 30 to the IC 51, the IC 51 is driven at the same time as the crown 60 is pushed in, and operates the crystal oscillator 52 to control the rotation of the generator 20.
[0062]
Then, when the generator 20 starts up and enters a steady operation, the power from the generator 20 is supplied to the IC 51 via the capacitor 30, and the rotation control of the generator 20 is continuously performed.
[0063]
On the other hand, when the generator 20 has been stopped for a long time and the terminal voltage of the capacitor 30 has decreased due to self-discharge, the switch 81 has been turned off. In this state, when the crown 60 is depressed and the generator 20 starts operating, the switch 40 is connected. The capacitor 30 is connected to the generator 20 via a resistor 82 having a large resistance value, and since the capacity of the auxiliary capacitor 80 is smaller than that of the capacitor 30, a large current flows to the capacitor 80 side and Charged. Then, when the voltage of the capacitor 80 reaches a voltage (about 1 V) at which the rotation control means 50 can be driven, the rotation control means 50 operates and the time of the clock is controlled.
[0064]
Also, a part of the current flows through the resistor 82 through the resistor 82 and is charged at the same time. When the terminal voltage of the capacitor 30 becomes equal to the voltage of the capacitor 80 or the rotation control means 50 can be driven. When the voltage reaches the voltage, the switch 81 is connected, power is supplied from the capacitor 30 to the rotation control means 50, and the operation returns to the normal operation.
[0065]
According to the present embodiment, similarly to the first embodiment, by providing the switch 40, the terminal voltage of the capacitor 30 can be maintained even when the generator 20 is stopped. As a result, the rotation control means 50 can be driven, and errors in time control are reduced, so that a more accurate needle adjustment operation can be performed.
[0066]
In addition, since an auxiliary capacitor 80 having a smaller capacitance is provided in addition to the capacitor 30, even when chattering occurs in the switch 40, power can be supplied from the capacitor 80 to the IC 51, and the IC 51 is stopped by chattering. Can be prevented.
[0067]
Further, since the auxiliary capacitor 80 and the switching circuit 83 are provided, even if the terminal voltage of the capacitor 30 is lowered due to self-discharge or the like, the rotation control means is used by using the auxiliary capacitor 80 when returning from the hand setting operation. It is possible to quickly charge the 50 ICs 51 and the like to a driveable voltage, and to quickly operate the rotation control unit 50.
[0068]
For this reason, the rotation control means 50 does not operate, the rise time during which the rotation control of the generator 20, that is, the time control of the timepiece cannot be accurately performed, can be shortened, and the error at the time of the hand adjustment can be extremely reduced. For example, in the third embodiment, the capacitor 80 has a voltage at which the IC 51 can be driven in about 0.5 seconds after the generator 20 is driven, and the IC 51 can be driven. Note that, even when the IC 51 is not driven, since the hands are moving with the mainspring, the actual error can be controlled to 0.1 seconds or less by correcting the actual error by a fixed amount, and the error can be extremely reduced.
[0069]
Further, in the present embodiment, since the capacitor 30 is connected to the generator 20 and the rotation control means 50 via the switching circuit 83 including the switch 81 and the resistor 82, the switch 81 is cut off when the generator 20 rises. A current can flow through the capacitor 30 via the resistor 82, and accordingly, by appropriately setting the resistance value of the resistor 32, the charging timing of the capacitors 30 and 80 can be set appropriately.
[0070]
Therefore, it is possible to quickly set the capacitor 80 so that the IC 51 and the like can be driven quickly and the capacitor 30 can be charged relatively quickly.
[0071]
Next, a fourth embodiment of the present invention will be described with reference to FIG.
[0072]
This embodiment is different from the third embodiment only in the configuration of the switching circuit 83 . Therefore, the same components as those of the third embodiment are denoted by the same reference numerals, and the description is omitted or simplified.
[0073]
In the fourth embodiment, a switch 81 and a diode 84 constitute a switching circuit 83. When a voltage is applied in the forward direction, a current does not normally flow until a voltage of about 0.6 V is applied, and a current flows when a voltage of about 0.6 V or more is applied. If the switch 81 is disconnected at the time, current flows only to the auxiliary capacitor 80 side at first and the capacitor 80 is quickly charged, and the IC 51 can be driven quickly.
[0074]
On the other hand, when the voltage applied to the diode 84 becomes equal to or higher than a predetermined voltage (about 0.6 V), a current also flows through the diode 84 via the diode 84 to be charged. When the voltage of the capacitor 30 becomes equal to the voltage of the capacitor 80, or when the voltage of the capacitor 30 reaches a voltage at which the IC 51 can be driven, the switch 81 is connected, and the rotation control means 50 is driven by the capacitor 30. .
[0075]
If two diodes 84 are connected in series, the voltage at which a current starts flowing through the diode 84 becomes about twice (about 1.2 V). It is also possible to control so that no current flows to the capacitor 30 side until the voltage becomes about 1 V). The number and type of the diodes 84 may be appropriately set in consideration of the charging timing of the capacitors 30 and 80, and the like.
[0076]
In this embodiment, the same operation and effect as in the third embodiment can be obtained. Further, since the diode 84 is used in place of the resistor 82, when the voltage of the capacitor 30 is reduced and the switch 81 is cut off, the electric charge in the capacitor 30 does not flow to the diode 84 side, so that the capacitor 30 can be more reliably stored in the capacitor 30. The electric charge can be left.
[0077]
It should be noted that the present invention is not limited to the above-described embodiments, but includes modifications and improvements as long as the objects of the present invention can be achieved.
[0078]
For example, in the first, third, and fourth embodiments, the switch 40 is provided at a position connected in series to the capacitor 30. For example, in FIG. In other words, it may be provided at a position where the power charged in the capacitor 30 can be cut off so as not to flow to the IC 51 side. However, depending on the position of the switch 40, leakage of the diode 23 may occur. Therefore, it is preferable to provide the switch in the position of the first embodiment.
[0079]
Further, the specific configuration of the switch 40 is not limited to the switch lever 40A of the first embodiment, but may be a mechanical switch or an electrical switch having another configuration, and may be set as appropriate for implementation. However, it is preferable to use a mechanical switch because power supply can be completely shut off. Note that even when an electrical switch is used, only the leakage current (about 1 nA) of the silicon diode that constitutes the electrical switch is discharged. Therefore, the switching effect of the switch is almost the same as that of the mechanical switch. Does not matter.
[0080]
Further, the switches 40 and 70 are not limited to those that are intermittently interlocked with the operation of the crown 60, and may be those that are intermittently interlocked with the stop and operation of the generator 20 and the train wheel.
However, if the switch lever 40A is used, there is an advantage that the structure is simple and it can be manufactured at low cost.
[0081]
Although various types of capacitors can be used as the capacitors 30 and 80, it is preferable to use a multilayer ceramic capacitor containing no electrolyte, since reliability can be improved. When the discharge characteristics of the ceramic capacitor were measured, 90% or more of the initial terminal voltage could be maintained even when self-discharged for about 15 minutes without charging. Therefore, at the time of the needle setting operation which usually ends in a few minutes, the multilayer ceramic capacitor can maintain a terminal voltage sufficient to drive the rotation control means 50 even when the generator 20 is stopped.
[0082]
【The invention's effect】
As described above, according to the electronically controlled mechanical timepiece of the present invention, since the power supply control means that is operated in conjunction with the operation of the generator is provided, the electric power is supplied from the capacitor when the generator is stopped. The electric energy supplied to the rotation control means can be cut off or reduced. Thus, when the generator starts to be driven, the rotation control means can be driven immediately or promptly by the condenser, and the error in hand adjustment can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan view showing a main part of an electronically controlled mechanical timepiece according to an embodiment of the present invention.
FIG. 2 is a sectional view showing a main part of FIG.
FIG. 3 is a sectional view showing a main part of FIG. 1;
FIG. 4 is a diagram showing a circuit of a main part of the embodiment.
FIG. 5 is a front view showing the switch of the embodiment.
FIG. 6 is a sectional view taken along the line VI-VI in FIG. 6;
FIG. 7 is a diagram showing a circuit of a main part of a second embodiment of the present invention.
FIG. 8 is a diagram showing a circuit of a main part according to a third embodiment of the present invention.
FIG. 9 is a diagram showing a circuit of a main part according to a fourth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 barrel barrel 1a mainspring 2 main plate 3 wheel train receiver 12 rotor 13 minute hand 14 second hand 15 stator 16 coil block 20 generator 30 smoothing capacitor 40 switch which is a power supply control means
40A switch lever 50 rotation control means 51 IC
52 crystal oscillator 60 crown 70 switch 80 as power supply control means auxiliary capacitor 81 switch 82 resistor 83 switching circuit 84 diode

Claims (9)

A mainspring, a generator for converting mechanical energy of the mainspring transmitted through the wheel train into electric energy, a pointer coupled to the wheel train, and a rotation cycle of the generator driven by the converted electric energy An electronically controlled mechanical timepiece having a rotation control means for controlling
A capacitor that temporarily stores the electric energy from the generator and supplies the rotation control unit with the electric energy, and supplies the electric energy from the capacitor to the rotation control unit when the generator is stopped. An electronically controlled mechanical timepiece comprising a power supply control means for shutting off. 2. The electronically controlled mechanical timepiece according to claim 1, wherein the power supply control means is connected in series with the capacitor, and is connected when the generator is operating, and the generator is stopped. An electronically controlled mechanical timepiece, characterized in that the timepiece is constituted by a switch that is cut off in some cases. 2. An electronically controlled mechanical timepiece according to claim 1 , wherein said power supply control means is a mechanical switch. The electronically controlled mechanical timepiece according to any one of claims 1 to 3, further comprising an auxiliary capacitor connected in parallel to the capacitor. 5. The electronically controlled mechanical timepiece according to claim 4, wherein the auxiliary capacitor has a smaller capacity than the capacitor, and the capacitor is connected via a switching circuit in which a resistor and a switching switch are connected in parallel. Connected to the power supply control means, and the changeover switch is connected when the terminal voltage of the capacitor is increased to a level at which the rotation control means can be driven, and is set to a value not larger than the level at which the rotation control means can be driven. An electronically controlled mechanical timepiece that is configured to be cut when lowered. The electronically controlled mechanical timepiece according to claim 4, wherein the auxiliary capacitor has a smaller capacity than the capacitor, and the capacitor is connected via a switching circuit in which a diode and a switching switch are connected in parallel. Connected to the power supply control means, and the changeover switch is connected when the terminal voltage of the capacitor is increased to a level at which the rotation control means can be driven, and is set to a value not larger than the level at which the rotation control means can be driven. An electronically controlled mechanical timepiece that is configured to be cut when lowered. A mainspring, a generator for converting mechanical energy of the mainspring transmitted through the wheel train into electric energy, a pointer coupled to the wheel train, and a rotation cycle of the generator driven by the converted electric energy An electronically controlled mechanical timepiece having a rotation control means for controlling
A capacitor that temporarily stores electric energy from the generator and supplies the energy to the rotation control unit, and reduces the power consumption in the rotation control unit when the generator is stopped to reduce the power consumption. An electronically controlled mechanical timepiece comprising: a power supply control unit configured to reduce a supply amount of electric energy from the motor to the rotation control unit. 8. The electronically controlled mechanical timepiece according to claim 7, wherein the power supply control unit is configured to cut off a part of a circuit in the rotation control unit to reduce an amount of power consumption in the rotation control unit. An electronically controlled mechanical clock characterized by the following. 9. An electronically controlled mechanical timepiece according to claim 1, wherein said capacitor is a multilayer ceramic capacitor.

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