JP3263774B2 - Movable body drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable body driving device incorporated in a mechanical timepiece, for example.

[0002]

2. Description of the Related Art Conventionally, there has been a mechanical timepiece provided with a movable body driving device which performs a performance of playing a melody at the hour and a movable body such as a doll playing a musical instrument in accordance with the melody. This movable body drive device
For example, as disclosed in Japanese Utility Model Laid-Open No. 1-72299, an electromagnetic rotating machine including a coil and a rotor is provided inside a doll or the like that swings an arm or the like, and a driving pulse is applied to the coil to rotate the rotor. The doll swings the hammer by swinging the arm of the doll or the like fixed to the 7-axis.

[0003]

In the conventional movable body driving device, since the pulse width of the drive pulse is fixed, if the power supply voltage fluctuates, the performance of the movable body may not be performed properly. For example, most of the movable body driving devices incorporated in a general-purpose mechanical timepiece use a dry battery as a power source, but when the battery voltage decreases, the swing of the doll's arm becomes slow.

If the pulse width of the driving pulse is fixed, the driving force of the electromagnetic rotating machine is determined by the driving pulse. For example, if the place where the mechanical clock is attached is inclined, the arm will be insufficient. May not be able to swing. Further, the movable body having a weight other than the determined weight could not be properly driven.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a movable body driving device capable of automatically switching a pulse width of a driving pulse in accordance with an operation state of a movable body such as a doll and maintaining proper performance.

[0006]

According to the present invention, there is provided a movable body such as a doll performing a desired performance, storage means for storing a pulse width of a driving pulse for driving the movable body, and timing for driving the movable body. And a drive control for driving the movable body by generating a drive pulse having a pulse width stored in the storage means when a timing for driving the movable body is instructed by the instruction means. Means for measuring the time required for the movable body to move in a desired section when the movable body is driven by the drive control means; and This object is achieved by providing a pulse width control means for updating the pulse width stored in the storage means.

The instructing means comprises a clock section and time detecting means for detecting the time measured by the clock section, and the drive control means detects a desired time by the time detecting means. In this case, it is preferable that the driving means generate a drive pulse having a pulse width stored in the storage means to drive the movable body.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. The movable body driving device in this example is to be incorporated in a mechanical timepiece that performs a performance in which a melody is played at the correct time and a doll with a hammer swings an arm in accordance with the melody and performs a bell beating. .

FIG. 1 shows a front view of a mechanical timepiece incorporating a movable body driving device according to the present invention. The timepiece is provided with a dial 11 and a mechanism device 12. The mechanism unit 12 is provided with a number of Karion bells 13 at the back of the arched stage, and two dolls 14, 14 stand on the rotating pedestals 15, 15 on the stage, respectively. Doll 1
Each of the members 4 and 14 normally faces the front, and stands still with the arm 16 as a movable body lowered. Rotary pedestal 15,1
5 is rotated 180 ° when the hour comes, and the dolls 14 and 14 are directed backward, so that the arm 16 swings in accordance with the melody. After a lapse of a predetermined time, the melody is stopped, and the swing of the arm 16 is stopped.
The dolls 14, 14 are stopped in a state where the dolls 14, 14 are turned to the front by rotating by 80 °, and a series of performances is completed.

FIG. 2 shows a block diagram of the above-mentioned timepiece. In the figure, the same reference numerals as those in FIG. 1 denote the same components. Reference numeral 21 denotes a clock unit for measuring the current time, reference numeral 22 denotes an hour signal generating means for generating an hour signal every time the current time measured by the clock unit 21 becomes an hour, and reference numeral 23 denotes clocking by the clock unit 21. Time reading means 24 for generating a time signal indicating the current time is a driving means for driving the arm 16 by generating a driving pulse during performance.

Reference numeral 25 denotes a melody generating unit for generating a melody during performance, and 26 denotes storage means for storing the pulse width of the drive pulse. Reference numeral 27 denotes a sensor for detecting that the arm 16 has been driven to reach a predetermined position during performance. In this example, the sensor 27 is a reflection type optical sensor having a light emitting element and a light receiving element. Reference numeral 28 denotes a timer for measuring the time from when a driving pulse is generated by the driving means 24 to when the sensor 27 detects that the arm 16 has reached a predetermined position. 29 is a table storing a reference time of the measurement time of the timer 28 and a plurality of types of pulse widths corresponding to the difference between the reference time and the measurement time of the timer 28;
Is control means for controlling various operations of the timepiece.

FIGS. 3 and 4 show the internal structure of the doll 14. FIG. In the figure, the same reference numerals as those in FIGS. 1 and 2 denote the same parts. 41 is a coil, 42 is a rotor shaft, 43 is a rotor made of a permanent magnet fixed to the center of the rotor shaft 42 by press fitting, and 44 is a brass fixed by press fitting next to the rotor 43 of the rotor shaft 42. Etc. adjustment weight. A reflection plate (not shown) is provided on a surface of the adjustment weight 44 facing the sensor 27.

When a driving pulse is generated from the driving means 24 and a current is supplied to the coil 41, a magnetic force is generated. The magnetic force rotates the rotor 43, and the arm 16 fixed to the rotor shaft 42 is swung up. The position where the arm 16 is swung up to the maximum is shown by a broken line in FIG. When the supply of current to the coil 41 is stopped, the magnetic force of the coil 41 disappears, and the arm 16 moves downward by its own weight. This series of movements is an operation of hitting a bell (not shown) with a hammer.

When the arm 16 is swung down, the surface of the adjustment weight 44 on which the reflecting plate is provided is located in front of the sensor 27, so that the light from the light emitting element of the sensor 27 is reflected by the reflecting plate and reflected by the light receiving element. The signal is received and the output signal of the sensor 27 becomes “1”. On the other hand, the surface of the adjustment weight 44 on which the reflector is provided is displaced from the front of the sensor 27 while the arm 16 is being swung up, so that the light from the light emitting element of the sensor 27 is not irradiated on the reflector and is not received by the light receiving element. , Sensor 27
Becomes "0".

Next, the flowchart of FIG. 5 and the flowchart of FIG.
The driving operation of the movable body 14 will be described with reference to the time chart of FIG.

First, when the current time measured by the clock section 21 becomes the positive time, which is the operation timing of the movable body, FIG.
As shown in (a), an hour signal is generated from the hour signal generator 22 and a time signal indicating the time is generated from the time reader 23 (step A).

The control means 30 receives the above-mentioned hour signal and time signal and generates a predetermined melody corresponding to each time from the melody generating section 25.
The pulse width of the driving pulse stored in the storage means 26 is read (step B).

Further, as shown in FIG.
The light-emitting element 7 emits light, and the timer 28 is reset-started slightly after the start of light-emission of the light-emitting element as shown in FIG. 6C (step C).

Next, in order to cause the doll 14 to perform the performance in accordance with the melody, as shown in FIG. Then, the arm 16 is driven (step D). In this example, the arm 16 is driven by the drive pulse “0”. The arm 16 is swung up by the drive pulse as shown in FIG.

When the arm 16 swings up to a predetermined position and the reflector of the adjustment weight 44 comes off the front of the sensor 27,
As shown in FIG. 6E, the output signal of the light receiving element of the sensor 27 switches to “0”. At this time, the control means 3
0 stops the measurement by the timer 28 (step E). In this way, the time required from when the arm 16 starts swinging up to when the arm 16 reaches a predetermined position is measured.

Then, the time measured by the timer 28 is compared with the reference time stored in the storage means 26, and the time difference is detected (step F).

Next, if the time difference is within the allowable range, a drive pulse having a pulse width read from the storage means 26 is continuously generated (step G), and the arm 16 is swung up to the uppermost position.

On the other hand, if the time difference is outside the allowable range,
The pulse width corresponding to the time difference is read from the table 29, and the drive pulse after the detection of the arm 16 by the sensor 27, that is, the drive pulse after the fall of the output signal of the light receiving element of the sensor 27 is output with the pulse width read from the table 29. At the same time, the drive pulse width stored in the storage means 26 is rewritten to a pulse width changed by the pulse width read from the table 29 (step H).

As the time measured by the timer 28 becomes longer than the reference time, that is, as the operation speed of the arm 16 becomes slower, the pulse width read from the table 29 becomes longer, and the arm 16 is reliably swung up to the uppermost position. As the measurement time of the timer 28 becomes shorter than the reference time, that is, as the operation speed of the arm 16 increases, the pulse width read from the table 29 becomes shorter, and the swing of the arm 16 is suppressed.

When the drive pulse falls, the magnetic force of the coil 43 disappears, and the arm 16 swings down to the original stationary position.

As described above, the drive pulse width is automatically adjusted according to the time required for the arm 16 to be swung up to the predetermined position, and the movement of the arm 16 is corrected.

In the above embodiment, the sensor 27 is a reflection type optical sensor. However, the present invention is not limited to this. For example, a transmission type optical sensor may be used.

Further, the mounting position of the sensor 27 is not limited to the above-described embodiment, but may be any position where the output signal level of the sensor 27 is inverted when the arm 16 reaches a predetermined position. For example, as shown in FIGS. 7 and 8, the position of the adjustment weight 44 may be a position where the position of the adjustment weight 44 is detected from a direction along the rotor shaft 42. In this case, a reflection plate is provided on the sensor 27 side of the adjustment weight 44. In the stationary state in which the arm 16 is swung down, the reflection plate is displaced from the front of the sensor 27, so that the output signal of the sensor 27 becomes "0", and when the arm 16 is swung up, the reflection plate is placed in front of the sensor 27. Is located, the output signal of the sensor 27 becomes “1”. Therefore, the time from when the driving pulse is generated from the driving means 24 to when the output signal of the sensor 27 switches to "1" is measured by the timer 28, and the driving pulse width may be adjusted according to the measured time. .

Further, as another example of the mounting position of the sensor 27, as shown in FIGS. 9 and 10, a hole is made in the side of the head of the doll 14, and the sensor 2 is provided inside the hole.
7 may be provided. In this case, a reflection plate is provided on the sensor 16 side of the arm 16 and the passage of the arm 16 is directly detected. In this case, as in the case of the example shown in FIGS.
In the stationary state where is down, the reflection plate is displaced from the front of the sensor 27, so that the output signal of the sensor 27 is "0".
When the arm 16 is swung up, the sensor 27
, The output signal of the sensor 27 becomes "1". Therefore, the time from when the driving pulse is generated from the driving means 24 to when the output signal of the sensor 27 switches to "1" is measured by the timer 28, and the driving pulse width may be adjusted according to the measured time. .

The movable body is not limited to a doll as in the above embodiment.

[0031]

According to the present invention, the movement of a movable body such as a doll during a performance is measured, and the pulse width of a drive pulse for driving the movable body is automatically adjusted according to the measurement result. Appropriate performance can always be performed with respect to voltage fluctuations and the like.

[0032] In particular, most of the movable body driving devices incorporated in general-purpose household timepiece clocks use a dry battery as a power source. However, even if the battery voltage decreases, the driving pulse width is adjusted so that the performance is properly performed. Is automatically corrected, so that the performance of the doll or the like can be performed properly for a longer period of time.

Further, since the driving pulse width is adjusted based on the result of measuring the actual movement of the movable body to maintain the performance of the movable body properly, the allowable range of various conditions for the movable body such as weight is expanded. Thus, more types of movable bodies can be driven.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a mechanical timepiece using the device of the present invention.

FIG. 2 is a block diagram showing an embodiment of a mechanical timepiece using the device of the present invention.

FIG. 3 is a front sectional view showing an embodiment of a main part of the apparatus of the present invention.

FIG. 4 is a side sectional view showing an embodiment of a main part of the apparatus of the present invention.

FIG. 5 is a flowchart for explaining one embodiment of a movable body driving operation of the apparatus of the present invention.

FIG. 6 is a waveform chart for explaining an embodiment of a movable body driving operation of the apparatus of the present invention.

FIG. 7 is a front sectional view showing another embodiment of the main part of the device of the present invention.

FIG. 8 is a side sectional view showing another embodiment of the main part of the device of the present invention.

FIG. 9 is a front sectional view showing still another embodiment of the main part of the apparatus of the present invention.

FIG. 10 is a side sectional view showing still another embodiment of the main part of the device of the present invention.

[Explanation of symbols]

 14 Doll 21 Clock section 22 Hourly signal generating means 23 Time reading means 24 Driving means 26 Storage means 27 Sensor 28 Timer 29 Table 30 Control means

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) G04B 45/00 A63H 13/04 G04C 23/00

Claims (2)

(57) [Claims] 1. A movable body such as a doll performing a desired performance, storage means for storing a pulse width of a drive pulse for driving the movable body, and instructing means for instructing a timing for driving the movable body. A drive control means for generating a drive pulse having a pulse width stored in the storage means to drive the movable body when a timing for driving the movable body is instructed by the instruction means; and Measuring means for measuring a time required for the movable body to move in a desired section when the movable body is driven; and a pulse stored in the storage means based on the time measured by the measuring means. And a pulse width control unit for updating the width. 2. The movable body driving device according to claim 1, wherein the instruction unit includes a clock unit and a time detection unit that detects a time measured by the clock unit. And a driving device for driving the movable body by generating a drive pulse having a pulse width stored in the storage means when the desired time is detected by the time detecting means. .