JPH05100701A - Power controller - Google Patents

Abstract

PURPOSE:To transmit and control power transmission between bodies without using a mechanical method by detecting an operation state between the bodies. CONSTITUTION:An object 1 to be detected rotates, and an alternating signal 8 is outputted from a sensor 2. For instance, a timer 11 is re-triggered at the time of the rise or the fall at the time of the alternation of the alternating signal, and the measurement of time is started from this point of time. During the measurement, a timer output signal 10 is kept OFF. The timer 11 is set at its measuring time length by a time adjuster 9, and every time re- triggering by the alternating signal 8 is executed within the set time, the measurement of the time is started from 0. An output control part 12 is operated by the timer output signal 10, and outputs a control signal 13. Besides, when the load of a follower part is increaded or it stops, since the rotation of the object 1 to be detected is lowered or stopped, the alternation length of the alternating signal 8 becomes long, and since the re-triggering is not executed within the time set by the time adjuster 9, the timer output signal 10 is turned M, and the control signal 13 is outputted, and a motor stops.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power controller that controls the power transmission between objects by detecting the mutual operating states of the objects without depending on a mechanical method.

[0002]

2. Description of the Related Art Conventionally, in power transmission between objects, a torque limiter (hereinafter referred to as "limiter") and an interlocking device (hereinafter referred to as "limiter") are provided so that an overload is not applied to a drive section and proper torque transmission is performed. "Clutch") is used, but it is necessary to use it properly according to the amount of power of the drive source to be used and the amount of load to be controlled. One torque limiter and clutch can be used as the power source and load. There was nothing that could be used regardless of size. In addition, since the structure is mechanical and utilizes frictional force, it has drawbacks such as limited durability.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned drawbacks. It detects a motion state of an object as an alternating signal and outputs a control output by measuring the time length and the number of the alternating signal. The purpose is to indirectly transmit, limit, and adjust the magnitude of power by varying the time length and number of signals to be transmitted. In addition, since it is not mechanically performed, it is not necessary to have high durability and precision of the parts used, and the price can be reduced, and individual functions can be improved by integrating it with a controlled machine such as a power source or solenoid valve. Is also intended.

[0004]

To achieve this object, a detector (hereinafter referred to as "sensor") for detecting various changes such as light, magnetism, electrostatic capacitance, distance, and a time measuring device (hereinafter referred to as "timer"). ), A time adjuster capable of varying the length of time to be measured, and a control output unit, and when the alternating signal is in a specific state, for example, the time measurement is returned to 0 at the time of alternating, and the time is changed in other states of the alternating signal. Is measured (hereinafter referred to as "retrigger")
If it is not re-triggered within the set time, it is configured to output a control output and perform intermittent control of power transmission, and integrate them with a power source and other controlled machines.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. Figure 1
In the figure, (2) is a sensor, which is of a reflected light type as an example, and detects the external detection target (1). (6)
Is a ray, and the state of detection is indicated by an arrow. As shown in FIG. 4, the detected body (1) has an integral structure, and the rotary shaft holder (26) is attached to the detection window (4 ') of the cover (4).
Although not shown, may be rotatably fixed by a screw or the like. (7) shows the operation direction. (3) is a circuit board shown in FIG. 2, on which a sensor (2), a timer (11) made of a monostable multivibrator and other integrated circuits, and other components constituting the circuit are attached. There is. (5) is an input / output electric wire. A dotted line shows an imaginary line of the cover (4), and a detection window (4 ') of the sensor is partially opened. In FIG. 2, (9) is a time adjuster for changing the set value of the measurement time, which is not shown as an example, but is a resistor or a condenser (hereinafter referred to as "capacitor").
It consists of. (8) is an alternating signal, which is a sine wave, a square wave, etc., and a timer (1
Retriggering in 1) is being done. (10) is a timer output signal which operates the control output (13) of the output control section (12). In FIG. 3, (14) is an example in which the power controller according to the present invention is integrated, and FIG. 4 shows an example of the structure. (19) is an electric motor (hereinafter referred to as "motor"), which is an example of a power source. A driven portion (20) is connected to the joint (15), and power is transmitted from the motor (19) to serve as a load. The power controller (14) is connected to the driven part through the joint (15 ') to detect the motion of the driven part, but although not shown, it is connected to the power source by a belt, a gear or the like to detect the motion. You can go. (16) is a holder for holding the motor and other objects. (17) rotates the motor by pushing the start switch (hereinafter referred to as "start switch") of (18) with the motor power. Further, FIG. 7 shows an example in which the power controller (14) is integrally mounted inside the motor (19) which is the controlled machine.
The partial cross section of a power controller part is shown. Motor rotation shaft (2
9) is an example in which the object to be detected (1) is attached to one end, and the sensor (2) is attached to the transmitted light type shown in FIG.

[0006]

The operation of the present invention will be described below with reference to FIGS.
Will be described. When the start switch (18) is pressed, the motor (19) is connected to the motor power supply (17) and rotates. Along with this, the detected body (1) of the power controller (14) according to the present invention rotates, and the sensor (2) outputs an alternating signal (8). As an example, the timer (11) is re-triggered at the rising or falling of the alternating signal, and the time measurement is started from this point. The timer output signal (10) is OFF during the time measurement. The time length of the timer (11) is set by the time adjuster (9), and the time measurement is started from 0 every time re-triggering is performed by the alternating signal (8) within the set time. Therefore, while the detected object (1) is rotating, the control output (13)
Is off. (12) is a timer output signal (1
The output control unit operating in 0) outputs the control output (13). Further, when the load of the driven part (20) increases or stops, the rotation of the detected body (1) decreases or stops, so that the alternating length of the alternating signal (8) becomes long, and the time adjuster (9). ) The timer output signal (10) turns ON because the re-trigger is not performed within the time set in), and the control output (13)
Is output and the motor (19) acts so as to stop.
Although not shown, the control output (13) is composed of a semiconductor element, a relay machine, or the like. The control output (13) may be inverted output. When the set time of the time adjuster (9) is shortened, re-triggering is performed within the set time only when the alternating time of the alternating signal (8) is short. Therefore, the output for control (1
3) is off. If the load increases and the rotation decreases, it will not re-trigger within the set time, and the control output (1
3) outputs and the motor (19) stops. Further, if the set time is lengthened, the load further increases, and the motor (19) does not stop until the rotation is greatly reduced or stopped. Therefore, by adjusting the time adjuster (9), the load to be transmitted is controlled and the power to be transmitted is adjusted.

[0007]

【The invention's effect】

[Effect 1] As described above, according to this embodiment, when the timer output signal is in the OFF state, the detector detects that the detected object, that is, the object is in the operating state, and in the ON state, within the set time. There is an effect that it is possible to detect that the alternator signal of the device is not alternating and is in a stopped state or a lowered operation state, and output a control output to perform intermittent control of power transmission.

[Effect 2] Since the operation is converted into the time called the alternating signal and detected, the operation state can be detected regardless of the magnitude of the driving force, and the power transmission can be controlled.

[Effect 3] The re-trigger time of the alternating signal can be varied by adjusting the set time of the time adjuster, and the magnitude of the transmitted power can be controlled.

[Effect 4] By integrating with the controlled machine, it is possible to save the trouble of wiring and mounting, and it is possible to increase the value of the product by making it compact and having a control function.

[Effect 5] Since the constituent parts are not expensive mechanical parts or the like but inexpensive resistors, capacitors, integrated circuits, etc., there is an effect that they can be manufactured at a low price.

[0008]

Other Embodiments of the Invention

(A) In FIG. 5, a counter (hereinafter referred to as a "counter") (21) for counting the number of alternating signals counts the number of alternating signals of the sensor (2), and divides and doubles the frequency. The same effect can be obtained by outputting a new alternating signal and retriggering the timer (11). Further, the count value adjuster (22) for adjusting the setting of the count value of the timer has the same effect as the time adjuster (9). (B) Even if the time adjuster is fixed to a constant value, the effect of power interruption is the same. (C) As shown in FIG. 5, each element such as a sensor, a counter, a timer, and an output control unit, which configures the power controller, may be a single unit or a plurality of units, which are separate and connected by a signal line. Have an effect. (D) In FIG. 6, even if the sensor (2) of FIG. 1 is of a transmitted light type, or if another means for detecting magnetism, electrostatic capacitance, etc. is taken, it can be detected as an alternating signal and is the same. Have an effect. Further, the detected object (1) of FIG. 1 is changed in shape and operation direction to a linear movement type, the external driven part (20) itself is changed, and the detected object (1) directly attached to the driven part is changed. The same effect can be obtained by directly detecting the change from the detection window (4 '). (E) In FIG. 2, if the controlled object is a small signal, or if the timer output signal is a large output, the output control section (12) may be removed and the timer output signal may be used as the control output. Has the same effect. (F) Although not shown, re-trigger can be stopped by setting the control output (13) or its inverted output as the measurement stop reset input of the timer (11), and the control output (1
It has the effect of holding 3).

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention as seen through.

FIG. 2 is a block diagram of an embodiment according to the present invention.

FIG. 3 is a configuration diagram when an embodiment according to the present invention is attached to a power source and control is performed.

FIG. 4 is a sectional view of an embodiment in which the embodiment according to the present invention is integrated.

FIG. 5 is a block diagram in which a counter and a count value adjuster are added to the embodiment according to the present invention.

FIG. 6 is another example in which the sensor is a transmitted light type and the detection target is linear.

FIG. 7 is a partial sectional view of an example integrated with a controlled machine.

[Explanation of symbols]

(1) Object to be detected, (1 ') Linear movement type object to be detected, (2)
Detector (sensor), (3) circuit board, (4) cover, (4 ') detection window, (5) signal output, (6) direction of light beam, etc. (7) operation direction of object to be detected, (8) (8 ') alternating signal, (9) time adjuster, (10) timer output signal, (11) time measuring device (timer), (12) output control unit, (13) control output, (14) ) Power controller according to the present invention, (15) (15 ') joint, (16) retainer,
(17) Motor power source, (18) Start switch (start switch), (19) Electric motor (motor), (20) Follower, (21) Counter (counter), (22) Count value adjuster, (23) ) Light emitter, (24) light receiver, (25) rotating shaft, (26) rotating shaft holder, (27) (28) support,
(29) Motor rotation axis,

Claims (2)

[Claims] 1. A detector configured to output various changes such as grooves and holes of an object, shading, perspective, magnetic amount, etc. as an alternating signal according to the movement of the object, and a specific state of the alternating signal. Sometimes the time measurement is set back to 0 and the time measurement is made in other states, and the measurement time adjuster that can change the time length of the signal to be measured is provided. A power controller characterized in that a control output is output when the set time has elapsed. 2. An integrated circuit with a controlled machine,
The power controller according to claim 1.