KR0175078B1 - Control device of elevator door - Google Patents

Abstract

When the control function of the door is stopped, the elevator door is prevented from free operation and is applied to the elevator door where the full opening preservation force is not obtained, thereby obtaining an elevator door control device capable of braking so that the door is not completely closed by the magnetic closing device. .

Opening and closing of the elevator door and drive means having a direct current motor 10 for driving the elevator door and driving elements 2 to 5 of the full bridge configuration by reversing the direction of current flow to the direct current motor A control apparatus for an elevator door having a control means for driving control of each drive element of the drive means in accordance with a signal, wherein the control means is subjected to abnormalities of the door open / close signals 11a and 11b during door opening or door closing. Nevertheless, a logic circuit 13 having a braking logic circuit for forcibly outputting a braking signal to the drive command generation means 14 when a braking signal is generated from the braking signal generating means 12g is provided.

Description

Control device of elevator door

1 is a block diagram showing a control device of an elevator door according to Embodiment 1 of the present invention.

2 is a block diagram showing an elevator door control device according to a second embodiment of the present invention.

3 is a block diagram showing a control device of an elevator door according to Embodiment 3 of the present invention.

4 is a block diagram showing a control device of an elevator door according to Embodiment 4 of the present invention.

5 is a block diagram showing a control device of an elevator door according to Embodiment 5 of the present invention.

6 is a block diagram showing a control device of an elevator door according to Embodiment 6 of the present invention.

7 is a block diagram showing an elevator control apparatus according to Embodiment 7 of the present invention.

8 is a block diagram showing a control device of an elevator door according to Embodiment 8 of the present invention.

9 is a block diagram showing a control device of an elevator door according to a conventional example.

10 is a waveform diagram for explaining the operation of FIG.

* Explanation of symbols for main parts of the drawings

1: DC power supply 1a ~ 1d: rectifier

1e: AC power supply 1f: Smoothing capacitor

2 ~ 5: driving device 6 ~ 9: rectifying device

10: self-contained DC motor 11: elevator control panel

11a: Door open signal 11b: Door close signal

12: speed control device 12f: power running signal generating means

12g: braking signal generating means 13: logic circuit

13a-13d, 13k, 13m, 13n, AND gate element

13e, 13f, 130: OR gate element 13g to 13j, 131: inverter element

14: drive command generation means 14a to 14d: amplifier

20: relay 20a ~ 20d: contact

21a, 21b: storage battery 22a, 22b: rectifier element

23: switch

The present invention relates to an elevator door opening and closing control device for controlling the opening and closing of the elevator door, and in particular, when the control function of the door is stopped, it does not become a free operation, and the braking device is not closed completely by the magnetic closing device. It relates to an elevator door control device.

9 is a block diagram of a conventional elevator door control apparatus known from Japanese Patent Laid-Open No. 1-41748.

In Fig. 9, 1 is a direct current power supply composed of rectifying elements 1a to 1d, an AC power source 1e, and a smoothing capacitor 1f, and 2 is a drive element which is turned on during a power driving operation for closing the door. 3 is a driving element for operating the power driving operation and door closing braking operation to open the door, 4 is a driving element for operating the door during the closing power driving operation and the door opening braking operation, and 5 is a power driving for opening the door. The driving elements to be turned on during operation, 6 to 9 are rectifying elements capable of energizing in the opposite direction to the conduction direction of the driving elements 2 to 5, and 10 to indicate self-contained DC motors (hereinafter simply referred to as DC motors). The drive means (2) to (5) constituted by the full bridge is configured to drive the reversible control by inverting the current conduction direction to the DC motor (10).

Reference numeral 11 denotes an elevator control panel, and 11a and 11b denote door opening signals and door closing signals sent from the elevator control panel 11.

12 denotes a speed control device, and the speed control device 12 includes a door position detector 12a for detecting the position of the door, its position detection signal and the door opening signal 11a from the elevator control panel 11; The speed pattern generation circuit 12b for outputting the speed command value according to the door closing signal 11b and the speed detector 12c for detecting the speed of the DC motor 10 and the deviation between the speed detection signal and the speed command value are obtained. PWM generation circuit 12e for outputting a PWM command whose PWM width is changed in response to the differential amplifier 12d and the deviation signal thereof, and power running signal generating means 12f for generating a power running signal when the deviation signal is a positive value. And a braking signal generating means 12g for outputting a braking signal when the deviation signal is a negative value.

13 denotes a logic circuit having a power driving logic circuit and a braking logic circuit.

The logic circuit 13 outputs an inverter element 13g for outputting an inverted signal of the door open signal 11a and the door close signal 11b, and logically compares the power run signal from the power run signal generating means 12f. Outputting of the AND gate element 13a and the door closing signal 11b and the inverting signal of the door opening signal 11a for obtaining the door opening power driving signal by The door closing and braking according to the AND gate element 13b and the door closing signal 11b and the braking signal generating means 12g which obtain the door closing power driving signal in a logical manner with the power running signal from 12f). An AND gate element 13d for obtaining a signal, an AND gate element 13d for obtaining a door opening braking signal, and a door opening motive force driving signal in accordance with a braking signal from the braking signal generating means 12g and a door opening signal 11a; Door open braking signal An OR gate element 13f to be synthesized is provided.

A power running logic circuit is formed of the AND gate elements 13a and 13b and the inverter elements 13g and 13h, and the AND gate elements 13C and 13d and the OR gate elements 13e and 13f are formed. As a result, a braking logic circuit is formed.

14 denotes a drive command generation circuit for outputting a drive command to the drive elements 2 to 5 in accordance with the output from the logic circuit 13.

The driving command generation circuit 14 drives the driving element 2 by the output of the amplifier 14a and the AND gate element 13b for driving the driving element 5 by the output of the AND gate element 13a. The output of the amplifier 14c and the OR gate element 13f for driving the drive element 3 in accordance with the output of the amplifier 14b and the OR gate element 13e and the output from the PWM generation circuit 12e, and An amplifier 14d for driving the drive element 4 in accordance with the output from the PWM generation circuit 12e is provided.

Each of the drive means in accordance with the open / close signal of the elevator door by the logic circuit 13 and the drive command generation means 14 for inputting the door open signal and the door closed signal from the speed control device 12 and the elevator control panel 11. Control means for controlling the drive of the drive elements 2 to 5 is configured.

Next, the operation by the above configuration will be described.

First, during the door opening operation, the door opening signal 11a is input from the elevator control panel 11 to the speed pattern generation circuit 12b and the logic circuit 13 of the speed control device 12.

In response to the door open signal 11a, the speed pattern generation circuit 12b generates a predetermined speed command value and when the speed command value is larger than the speed detected value by the speed detector 2c, the output of the differential amplifier 12d is performed. The power running signal generating means 12f is operated, and the power running signal is output from the power running signal generating means 12f.

At this time, the AND gate element 13a of the logic circuit 13 is outputted from the output of the inverter 13g and the power running signal generating means 12f which obtains the inverted output of the door open signal 11a and the door close signal 11b. It operates by three logics of power running signal.

According to the output of the AND gate element 13a, the amplifier 14a of the drive command generation means 14 operates and the drive element 5 operates, and at the same time, the OR gate element 13e is driven by the signal of the AND gate element 13a. ) And the amplifier 14c operate to drive the drive element 3.

Accordingly, power is supplied from the (+) side of the power supply device 1 and current flows to the (-) side of the power supply device 1 through the driving device 5, the DC motor 10, and the driving device 3. The DC motor 10 rotates.

At this time, the door opening starts continuously controlling the driving element 5 according to the output of the amplifier 14a, and as shown in FIGS. 10A to 10C, the driving element 3 Is switched by the amplifier 14c in accordance with the output of the PWM generation circuit 12e to gradually accelerate by controlling the pulse width in response to the deviation between the speed command value and the speed detection value.

After that, when the speed of the DC motor 10 reaches the speed command value and the deviation is small, the ON time of switching is shortened and the current value flowing through the DC motor 10 is lowered to rotate the constant speed.

Next, when the door reaches the deceleration point, the operation shifts to braking.

When the door open braking, that is, when the speed command value from the speed pattern generation circuit 12b becomes smaller than the speed detection value by the speed detector 12c, the power running signal generating means (in accordance with the output of the differential amplifier 12d) ( The power running signal from 12f) is cut off, and the control signal generating means 12g is operated to generate a braking signal.

At the same time as the power running signal is turned off, the driving element 5 is turned off and the AND gate element 13d and the OR element are formed by the braking signal from the door opening signal 11a and the braking signal generating means 12g. 13f, the amplifier 14d, and the drive element 4 operate to brake.

Accordingly, the electric current flows to the driving device 4, the rectifying device 7 and the direct current motor 10 by the discharge energy generated by the rotation of the direct current motor 10, and the direct current motor 10 is braked to open the door. It also controls the deceleration.

That is, when the speed command value indicated by a solid line, for example, in FIG. 10 (a) is output from the speed pattern generation circuit 12b of the speed control device 12, it is known from the speed detector 12c of the DC motor 10. Is detected by a dotted line in FIG. 10 (a), and as a result, as shown in FIG. 10 (b) from the differential amplifier 12d, the deviation between the speed detection signal and the speed command value The PWM generating circuit 12e outputs a PWM command whose PWM width is changed in response to the deviation signal, as shown in FIG. 10C. At this time, the deviation signal from the differential amplifier 12d is obtained. Is a positive value, the power running signal is output from the power running signal generating means 12f, and when the deviation signal from the differential amplifier 12d is negative, the braking signal is output from the braking signal generating means 12g.

Here, the power running signal generating means 12f compares the door open / close signal and the speed command signal of the speed generating circuit 12b according to the position of the door with the speed signal obtained from the speed detector 12c attached to the DC motor 10. In the case where the speed command signal is large by the differential amplifier 12d that calculates the deviation, the power running signal generating means 12f is operated, and the PWM generation circuit 12e is controlled by the deviation to change the switching time to accelerate the acceleration. To change.

On the contrary, in the case where the speed signal obtained from the speed detector 12C is large, the braking signal generating means outputs the braking signal by turning off the power running signal.

Like the power driving operation, the deceleration is changed by changing the switching time by the deviation.

Next, in the door closing operation, the door closing signal 11b is input from the elevator control panel 11 to the speed pattern generation circuit 12b and the logic circuit 13 of the speed control device 12.

In response to the door closing signal 11b, the speed pattern generation circuit 12b generates a predetermined speed command value and when the speed command value is larger than the speed detection value by the speed detector 12C, the output of the differential amplifier 12d is performed. The power running signal generating means 12f is operated, and the power running signal is output from the power running signal generating means 12f.

At this time, the AND gate element 13b of the logic circuit 13 outputs from the output of the inverter 13h for obtaining the inverted output of the door closing signal 11b and the door opening signal 11a and from the power running signal generating means 12f. Operated by three logics of the power running signal, the amplifier 14b of the drive command generation circuit 14 operates according to the output of the AND gate element 13b, and the driving element 2 operates, and the AND gate The OR gate 13f and the amplifier 14d operate by the signal of the element 13b to operate the drive element 4.

Accordingly, power is supplied from the (+) side of the power supply device 1 and current flows to the (-) side of the power supply device 1 through the driving device 2, the DC motor 10, and the driving device 4. The DC motor 10 rotates in the reverse direction to the door opening direction.

At this time, when the door is opened, the driving element 2 is continuously ON controlled in accordance with the output of the amplifier 14b, and as shown in FIGS. 10A to 10C, the driving element 4 Is switched by the amplifier 14d in accordance with the output of the PWM generation circuit 12e, and is gradually accelerated by controlling the pulse width in response to the deviation between the speed command value and the speed detection value.

Thereafter, when the speed of the DC motor 10 reaches the speed command value and the deviation is small, the ON time of switching is shortened and the current value flowing to the DC motor 10 is lowered to rotate the constant speed.

Next, when the door reaches the deceleration point, the operation shifts to braking.

When the door closing and braking, i.e., when the speed command value from the speed pattern generation circuit 12b becomes smaller than the speed detection value by the speed detector 12c, the power running signal generating means (in accordance with the output of the differential amplifier 12d) The power running signal from 12f) is cut off, and the control signal generating means 12g is operated to generate a braking signal.

At the same time as the power running signal is turned off, the drive element 2 is turned off, and the AND gate element 13C and the OR element 13e are driven by the braking signal from the door closing signal 11b and the braking signal generating means 12g. ), The amplifier 14C and the driving element 3 operate to brake.

As a result, current flows to the driving device 3, the rectifying device 8, and the DC motor 10 by the discharge energy generated by the rotation of the DC motor 10. It also controls the deceleration.

The control device of the conventional elevator door is configured to obtain the door open braking by the multiplication of the door open signal and the braking signal, and thus the door open signal during the door opening due to a failure, noise, or malfunction of the built-in element of the elevator control panel 11. If 11a is blocked, door braking is impossible and the elevator door is free.

In addition, the same applies to the door closing braking, and is configured to be obtained by multiplying the door closing signal and the braking signal. Therefore, if the door closing signal 11b is blocked during the door closing, the door closing braking is impossible and the elevator door is in the free operation. do.

In addition, if a power failure occurs in the power supply unit while the elevator door is being opened or closed, the DC motor 10 for driving the door becomes uncontrollable, so that braking of the door does not work and is dangerous for the user using the elevator. Action.

Also, if the door open / close signal is turned on or off at the same time while the elevator door is being opened or closed, the driving elements 2 to 5 are turned off, so that the DC motor 10 driving the door becomes uncontrollable and brakes the door. This operation is not performed, and the operation is dangerous for the person using the elevator.

Also, in elevator doors such as linear door mechanisms, where the full opening preservation force is not obtained, when the door open signal or the door closing signal is turned off in the car or the power is cut off, the elevator door is completely closed by the self closing power of the landing door. If the door is completely closed, the elevator cannot be restored unless it is opened with a key from the platform.

For this reason, a braking device in which the door is not completely closed by the magnetic closing device when the door driving stop switch is operated is disclosed, for example, in Japanese Patent Laid-Open No. 63-235284.

That is, if the braking device has no door opening and closing command and no door function, the braking device performs the detection and flows the braking current with the output of the speed command generation circuit of the door at zero, and controls only the input from the speed detector of the door. By limiting the magnetic closing force by flowing the braking current according to the magnetic closing speed and by installing a load, the door is stopped without being completely closed by the load.

However, such a braking device requires a special configuration for limiting the self-closing force and a configuration in which the door stops without being completely closed.

The present invention has been made to solve the problems caused by the above-described conventional example, and does not require a free operation when the control function of the door is stopped, and does not require a special configuration, and thus fully open preservation force such as a linear door mechanism. It is an object of the present invention to obtain an elevator door control device which can be applied to an elevator door which is not obtained and can be braked so that the door is not completely closed as a magnetic closing device.

The control device of the elevator door of the present invention includes a driving means for reversibly controlling the rotation of the DC motor having a DC motor for driving the elevator door and a driving element having a full bridge configuration, and the driving means according to the opening / closing signal of the elevator door. In a control apparatus of an elevator door having a control means for driving control of a drive element, a braking logic for forcibly outputting a braking signal in spite of an abnormality of a door opening / closing signal according to a braking signal generated during opening or closing of a door to the control means. It is characterized by including a circuit.

In addition, the control device of the elevator door of the present invention uses the braking logic circuit as the door closing brake signal as the logic of the reversal signal and the brake signal of the door opening signal, and at the same time the logic of the reversal signal of the door closing signal and the braking signal is opened. It may be configured to output as a braking signal.

In addition, the control device of the elevator door of the present invention may be configured to forcibly turn off the door open / close signal and output a braking signal when the door open signal and the door close signal are turned on at the same time.

In addition, the control apparatus of the elevator door of this invention may be comprised so that a braking logic circuit may forcibly output a braking signal when a door opening signal and a door closing signal turn OFF simultaneously.

In addition, the control device of the elevator door of the present invention has a self-loading DC motor for driving the elevator door, a power supply device for supplying DC power to the self-loading DC motor, and a drive element having a full bridge configuration in which a rectifier element is reversely connected in parallel. An elevator door control device comprising: a drive means for reversibly controlling the rotation of the self-contained direct current motor; and a control means for driving control of each drive element of the drive means in accordance with an open / close signal of the elevator door. And means for braking for braking the self-current motor according to the detection signal by the means for detecting the detection means.

Moreover, the control apparatus of the elevator door of this invention is equipped with the storage battery which supplies a DC power supply as a switching means at the time of braking, isolate | separates the drive element which operates at the time of braking from the said control means according to the detection signal by the said detection means, The storage battery may be connected to the control electrode terminal of the drive element so as to turn on the drive element.

In addition, the control device of the elevator door of the present invention is a switching device for braking, which separates the driving device which operates at the time of braking according to the detection signal by the detecting means from the control means, and at the same time the self-actuating control electrode terminal of the driving device. It may be configured to supply the generated electric power of the DC motor to turn ON the driving element.

The control device of the elevator door of the present invention may be configured to short-circuit both ends of the armature of the magnetic-type DC motor in accordance with a detection signal by the detection means as switching means during braking.

In addition, the control apparatus of the elevator door of this invention may be comprised so that the both ends of a power supply line may be short-circuited according to the detection signal by the said detection means as switching means at the time of braking.

In addition, the control device of the elevator door of the present invention may be provided with an operation switch which opens a short circuit which is shorted in accordance with a detection signal by the detection means as switching means during braking.

The control apparatus of the elevator door of the present invention has a direct current motor for driving an elevator door and a drive element having a full bridge configuration, and a drive means for reversibly controlling the rotation of the direct current motor and each drive of the drive means in accordance with an opening / closing signal of the elevator door. A control apparatus for an elevator door having a control means for driving control of an element, the control means for outputting a braking signal forcibly in spite of an abnormality of a door closing signal according to a braking signal generated during opening or closing of a door to the control means. By providing the braking logic circuit, it is possible to perform the door opening braking operation and the door closing braking operation in spite of the door opening / closing signal. Accordingly, even when the door opening / closing signal is disconnected, the brake is immediately applied to the DC motor driving the door to stop Can improve the safety of the user, and also This prevents the door from closing completely.

In addition, the control device of the elevator door of the present invention uses the brake logic circuit as the door closing signal as the inversion signal of the door opening signal and the braking signal as the door closing braking signal, and the logic between the inversion signal of the door closing signal and the braking signal as the door. By outputting it as an open braking signal, even if the door opening signal is turned off during door opening braking, the door opening braking signal is obtained by the logic of the inversion signal of the door closing signal and the braking signal, regardless of whether the door opening signal is on or off. The door opening braking operation can be performed and the door closing braking signal is obtained by logically the inversion signal of the door opening signal and the braking signal even if the door closing signal is turned off during the door closing braking. The door closing and braking operation can be performed without using the DC motor. To be walked stop the brake immediately and, it is possible to improve the safety of a user, and also prevent by the magnetic force of the closing door and the door is fully closed ll.

In addition, the control device of the elevator door of the present invention is configured to forcibly turn off the door open / close signal and output a braking signal when the door open signal and the door close signal are turned on at the same time. Even when the door closing signal is turned on at the same time during operation, the door can be stopped by applying the DC motor driving the door immediately, and the door is prevented from being completely closed by the self closing force of the door.

In addition, the control device of the elevator door of the present invention configures the braking logic circuit to forcibly output a braking signal when the door opening signal and the door closing signal are turned off at the same time during the door opening and closing operation, thereby simultaneously opening and closing the door opening and closing signal. Even if it is OFF, the door can be braked immediately by the DC motor driving the door, the safety of the user can be improved, and the door is prevented from being completely closed by the self closing force of the door.

In addition, the control device of the elevator door of the present invention includes a self-contained direct-current motor for driving the elevator door, a power supply for supplying a direct-current power supply to the self-contained direct-current motor, and a drive element having a full bridge configuration in which a rectifier element is inversely connected in parallel. Detecting means for detecting the interruption of the power supply device in a control apparatus of an elevator door having a driving means for reversibly controlling a direct current type motor and a control means for driving control of each driving element of the driving means in accordance with an opening / closing signal of the elevator door And a braking switching means for braking the self-driving DC motor according to the detection signal by the detecting means, so that the door is immediately braked to the self-driving DC motor which drives the door even if the power supply is shut off during the door opening / closing operation. To increase the safety to the user, and the self-closing force of the door This prevents the door from closing completely.

In addition, the control device of the elevator door of the present invention includes a storage battery for supplying DC power as the switching means during braking, and at the same time separates the drive element operating during braking according to the detection signal by the detecting means from the control means. By connecting the storage battery to the control electrode terminal of the driving element and turning the driving element ON, the door is immediately braked by a self-contained DC motor that drives the door even if the power supply is shut off during the door opening and closing operation. The safety of the user can be improved by stopping, and the door is prevented from being completely closed by the magnetic closing force of the door.

In addition, the control device of the elevator door of the present invention, as the braking switching means, separates the driving element operated during braking according to the detection signal by the detecting means from the control means, and By supplying the generated electric power of self-driving DC motor and turning on its driving element, even if the power supply is shut off during door opening / closing operation, the brake is immediately applied to the self-driving DC motor which drives the door to stop the door. It can improve safety and prevent the door from being completely closed by the self closing force of the door.

In addition, the control device of the elevator door of the present invention is configured to short-circuit both ends of the armature of the self-acting DC motor in accordance with a detection signal by the detection means as the switching means for braking to drive the door even when the power is cut off during the door opening and closing operation. The motor can be braked immediately to stop the door, thereby improving safety to the user, and also preventing the door from being completely closed by the self closing force of the door.

In addition, the control device of the elevator door of the present invention is configured to short-circuit between both ends of the power line in accordance with a detection signal by the detection means as the switching means for braking, so that the self-directing DC which drives the door even if the power supply device is shut off during the door opening and closing operation. The motor can be braked immediately to stop the door to improve the safety to the user and prevent the door from being completely closed by the self closing force of the door.

Moreover, the control apparatus of the elevator door of this invention is equipped with the operation switch which opens the short circuit short-circuited according to the detection signal by the said detection means as switching means at the time of braking, even if it is desired to move a door by hand at the time of elevator maintenance. Braking can be prevented and maintenance can be performed easily.

Example 1

Hereinafter, the present invention will be described in accordance with the drawings.

1 is a block diagram showing a control device of an elevator door according to the first embodiment.

In FIG. 1, the conventional control apparatus shown in FIG. 9 denotes the same parts with the same reference numerals, and 1 denotes the rectifier elements 1a to 1d, the AC power source 1e and the smoothing capacitor 1f. DC power supply which is configured, 2 is a driving element to be turned on at the door closing power driving operation, 3 is a driving element to be operated at the door opening power driving operation and door closing braking operation, 4 is a door closing power driving operation and door opening braking Driving elements operating at the time of operation, 5 is a driving element which is turned on at the time of the door opening power driving operation, 6 to 9 is a rectifying element capable of energizing in the opposite direction to the conduction direction of the driving elements 2 to 5, and 10 is a self-exciting type. A drive means for displaying a direct current motor (hereinafter simply referred to as a direct current motor) and inverting the current-carrying direction to the direct current motor 10 by means of the drive elements 2 to 5 configured in full-batch; It consists.

Reference numeral 11 denotes an elevator control panel, and 11a and 11b denote door opening signals and door closing signals sent from the elevator control panel 11.

12 is a speed pattern for outputting a speed command value according to the door position detector 12a for detecting the position of the door, the position detection signal and the door open signal 11a and the door closing signal 11b from the elevator control panel 11; The speed detector 12C for detecting the speed of the generator circuit 12b and the DC motor 10, the differential amplifier 12d for obtaining the deviation between the speed detection signal and the speed command value, and the PWM signal in response to the deviation signal are obtained. PWM generating circuit 12e for outputting the changed PWM command, power driving signal generating means 12f for generating a power running signal when the deviation signal is a positive value, and braking signal generating means for outputting a braking signal when the deviation signal is negative value; It is a speed control device provided with (12g).

13 denotes a logic circuit having a power driving logic circuit and a braking logic circuit.

The logic circuit 13 is provided from the inverter element 13g, which outputs the inverted signal of the door closing signal 11b, the door opening signal 11a, the output of the inverter element 13g, and the power running signal generating means 12f. Inverter element 13h, door closing signal 11b, and the inverter outputting an inverted signal of the AND gate element 13a and the door opening signal 11a, which obtain a door opening power driving signal in a logical manner with the power driving signal of the inverter. A power driving logic circuit is formed as an AND gate element 13b which obtains a door closing power driving signal based on the output of 13h and the power running signal from the power running signal generating means 12f. From the inverter element 13i for outputting the inverted signal of the signal 11a and the inverter element 13j for outputting the inverted signal of the door closing signal 11b, and the output and brake signal generating means 12g of the inverter element 13i. Door closed by gaining the logical An AND gate element 13d for outputting a brake signal and an AND gate element 13d for outputting a door open brake signal by obtaining a logic of the output of the inverter element 13j and the brake signal from the brake signal generating means 12g; The door is closed by the OR of the OR gate element 13e and the AND gate elements 13b and 13d by synthesizing the door opening power driving signal and the door closing braking signal by the OR of the AND gate elements 13a and 13c. A braking logic circuit is formed as an OR gate element 13f which combines a power running signal and a door opening braking signal.

14 denotes a drive command generation circuit for outputting a drive command to the drive elements 2 to 5 in accordance with the output from the logic circuit 13, and the drive command generation circuit 14 is an AND gate element 13a. Of the amplifier 14b and the OR gate element 13e for driving the driving element 2 by the output of the amplifier 14a and the AND gate element 13b by the output of According to the output of the amplifier 14c and the OR gate element 13f and the output from the PWM generation circuit 12e according to the output and the output from the PWM generation circuit 12e, 4) an amplifier 14d for driving, a logic circuit 13 for inputting a door open signal and a door closed signal from the speed control device 12 and the elevator control panel 11, and a drive command generation circuit ( 14) drive elements 2 to 5 of the drive means in accordance with the opening and closing signal of the elevator door. And control means for and configuration.

That is, in the configuration of the first embodiment, the configuration different from the conventional example shown in FIG. 9 is a part of the braking logic circuit in the logic circuit 13, and the braking signal is kept in spite of the abnormality of the door opening / closing signal during the door opening or the door closing. It is provided with a braking logic circuit for forcibly outputting a braking signal in the case of occurrence, and from the elevator element 13i and the elevator control panel 11 outputting the inverted signal of the door open signal 11a from the elevator control panel 11 in a new configuration. Inverter element 13j for outputting the inverted signal of the door closing signal 11b is provided. In this embodiment 1, even if the door opening signal is turned off during the door opening braking, the inversion signal of the door closing signal and the braking signal are logical. The door open braking signal can be obtained, and the door open braking operation can be performed regardless of whether the door open protection command is turned ON or OFF. Even if FF, the braking logic circuit is configured to obtain a door closing brake signal based on the inversion signal of the door opening signal and the braking signal so that the door closing braking operation can be performed regardless of the door closing command ON or OFF.

The other configuration is the same as that of the conventional control apparatus.

Next, the operation by the above configuration will be described.

First, in the door opening operation, the door opening signal 11a is input from the elevator control panel 11 to the speed pattern generation circuit 12b and the logic circuit 13 of the speed control device 12.

In response to the door open signal 11a, the speed pattern generation circuit 12b generates a predetermined speed command value. When the speed command value is larger than the speed detected value by the speed detector 12C, the speed amplifier 12d outputs the output of the differential amplifier 12d. Accordingly, the power running signal generating means 12f is operated, and the power running signal is output from the power running signal generating means 12f.

At this time, the AND gate element 13a of the logic circuit 13 is derived from the output of the inverter element 13g and the power running signal generating means 12f which obtain the inverted output of the door open signal 11a and the door closed signal 11b. It operates according to the three logics of the power running signal, and according to the output of the AND gate element 13a, the amplifier 14a of the drive command generation circuit 14 operates so that the drive element 5 operates and the AND gate. The OR gate element 13e and the amplifier 14C operate by the signal of the element 13a, and the drive element 3 operates.

Accordingly, power is supplied from the (+) side of the power supply device 1, and current flows to the (-) side of the power supply device through the driving device 5, the DC motor 10, and the driving device 3, so that the DC motor ( 10) rotates.

At this time, when the door is opened, the driving element 5 is continuously ON controlled in accordance with the output of the amplifier 14a, and as shown in FIGS. 10A to 10C, the driving element 3 Is switched by the amplifier 14c in accordance with the output of the PWM generation circuit 12e to gradually accelerate by controlling the pulse width in response to the deviation between the speed command value and the speed detection value.

Then, when the speed of the DC motor 10 reaches the speed command value and the deviation is small, the ON time of switching is shortened and the current value flowing through the DC motor 10 is lowered to rotate the constant speed.

Next, when the door reaches the deceleration point, the operation shifts to braking.

When the door opening is braked, i.e., when the speed command value from the speed pattern generation circuit 12b becomes smaller than the speed detection value by the speed detector 12C, the power running signal generating means (in accordance with the output of the differential amplifier 12d) The power running signal from 12f) is cut off and the control signal generating means 12g operates to generate a braking signal.

At the same time as the power running signal is turned off, the drive element 5 is turned off and at the same time the output of the inverter element 13j which obtains the inversion signal of the door closing signal 11b and the braking signal from the braking signal generating means 12g. As a result, the AND gate element 13d, the OR element 13f, the amplifier 14d, and the driving element 4 operate to brake.

At this time, even when the door open signal 11a is disconnected for some reason during the door open braking, the door open braking is performed according to the output of the inverter 13j which obtains the inversion signal of the door closed signal 11b. The door opening braking operation can be continued without causing a change.

Next, in the door closing operation, the door closing signal 11b is input from the elevator control panel 11 to the speed pattern generation circuit 12b and the logic circuit 13 of the speed control device 12.

In response to the door closing signal 11b, the speed pattern generation circuit 12b generates a predetermined speed command value and when the speed command value is larger than the speed detection value by the speed detector 12C, the output of the differential amplifier 12d follows. The power running signal generating means 12f is operated and a power running signal is output from the power running signal generating means 12f.

At this time, the AND gate element 13b of the logic circuit 13 is formed from the output of the inverter element 13h which obtains the inverted output of the door closing signal 11b and the door opening signal 11a and from the power running signal generating means 12f. It operates by three logics of the power running signal of the amplifier. The amplifier 14b of the drive command generation circuit 14 operates according to the output of the AND gate element 13b, and the AND element 2 operates and the AND gate simultaneously. The OR gate element 13f and the amplifier 14d operate in accordance with the signal of the element 13b to operate the drive element 4.

Accordingly, power is supplied from the (+) side of the power supply 1, and current flows to the (-) side of the power supply 1 through the driving element 2, the DC motor 10, and the driving element 4. The DC motor 10 rotates in the reverse direction to the door opening direction.

At this time, when the door is opened, the driving element 2 is continuously controlled according to the output of the amplifier 14b, while the driving element 4 is turned off as shown in FIGS. 10 (a) to 10 (c). The switching operation is performed by the amplifier 14d in accordance with the output of the PWM generation circuit 12e, and the pulse width is controlled gradually in response to the deviation between the speed command value and the speed detection value.

After that, when the speed of the DC motor 10 reaches the speed command value and the deviation is small, the ON time of switching is shortened and the current value flowing to the DC motor 10 is lowered to rotate the constant speed.

Next, when the door reaches the deceleration point, the operation shifts to braking.

Then, at the time of door closing braking, i.e., when the speed command value from the speed pattern generation circuit 12b becomes smaller than the speed detection value by the speed detector 12c, the power running signal generating means in accordance with the output of the differential amplifier 12d. The power running signal from 12f is cut off, and the braking signal generating means 12g is operated to generate a braking signal.

At the same time as the power running signal is turned off, the drive element 2 is turned off and at the same time by the output of the inverter element 13i which obtains the inverted signal of the door open signal 11a and the braking signal from the braking signal generating means 12g. The AND gate element 13c, the OR element 13e, the amplifier 14c, and the drive element 3 operate to brake.

At this time, even when the door closing signal 11b is disconnected for some reason during door closing braking, the door closing braking operation is performed according to the output of the inverter element 13i which obtains the inversion signal of the door opening signal 11a. The door closing braking operation can be continued without causing a change.

Therefore, according to the first embodiment, a braking logic circuit for forcibly outputting a braking signal when a braking signal occurs despite an abnormality of a door opening / closing signal during door opening or door closing, and the braking logic circuit is opened. The logic between the signal inversion signal and the braking signal is used as the door closing brake signal, and the logic between the inversion signal and the brake signal of the door closing signal is output as the door opening brake signal. Operation and door closing braking operation, in particular, even when the door opening signal is turned off during door opening braking, the door opening braking signal is obtained by logically the inversion signal of the door closing signal and the braking signal, and the door opening signal is turned on. The door open braking operation can be performed regardless of whether the door is open or closed. Obtained in the door closing braking signal by the logical inversion of the signal and a brake signal to be able to make the door closing braking operation regardless of the ON, OFF of the door closing command.

Accordingly, even when the door open / close signal is disconnected, the DC motor that drives the door can be braked immediately to stop, improving safety to the user, and free operation when the door control function is stopped. At the same time, it can be applied to an elevator door that does not require a special configuration and is not obtained by a full opening preservation force such as a linear door mechanism, so that the door can be braked by the magnetic closing device.

Example 2

Next, FIG. 2 is a block block diagram which shows the control apparatus of the elevator door which concerns on Example 2. FIG.

In Fig. 2, the same parts as those in Embodiment 1 shown in Fig. 1 are denoted by the same reference numerals and the description thereof will be omitted.

In the new configuration, 13K is an AND gate element for detecting simultaneous ON of the door open signal 11a and the door closed signal 11b, 13L is an inverter element giving the inverted signal, and 13m is a door open signal 11a and an inverter element ( AND gate element logically obtained with the output of 13L), 13n is an AND gate element logically obtained with the output of the door closing signal 11b and the inverter element 13L, and 13o braking from the brake signal generating means 12g. An OR gate element for obtaining a logical sum of the signal and the output of the AND gate element 13K is shown.

The braking logic circuit is constituted by the configuration of these and the AND gate elements 13C and 13d, the OR gate elements 13e and 13f, and the inverter elements 13i and 13j as in the first embodiment. When the door opening signal 11a and the door closing signal 11b are turned on at the same time, the door opening and closing signal is forcibly turned off and a braking signal is output.

Next, the operation by the above configuration will be described.

First, during the door opening operation, power is supplied from the positive side of the power supply device 1 in the same manner as in the first embodiment, and the power supply device is driven through the driving element 5, the DC motor 10, and the driving element 3. The current flows to the negative side of the DC motor 10.

At this time, when the door is opened, the driving element 5 is continuously ON controlled in accordance with the output of the amplifier 14a, while the driving element 3 is switched by the amplifier 14c in accordance with the output of the PWM generation circuit 12e. In response to the deviation between the speed command value and the speed detection value, the pulse width is controlled to accelerate gradually.

Then, when the speed of the DC motor 10 reaches the speed command value and the deviation is small, the ON time of switching is shortened and the current value flowing through the DC motor 10 is lowered to rotate the constant speed.

Next, when the door reaches the deceleration point, the operation shifts to braking.

When the door opening is braked, i.e., when the speed command value from the speed pattern generation circuit 12b becomes smaller than the speed detection value by the speed detector 12c, the power running signal generating means (in accordance with the output of the differential amplifier 12d) ( The power running signal from 12f) is cut off, and the control signal generating means 12g is operated to generate a braking signal.

When the driving element 5 is turned off at the same time as the power running signal is turned off, and the door opening signal 11a and the door closing signal 11b are not in the ON state at the same time, the door opening signal 11a and the door closing are closed. The output of the AND gate element 13K, which is logical with the signal 11b, is at L level, the inverter element 13L is at H level, the AND gate element 13n is at L level, and the inverter element 13j is at H level. Therefore, by the braking signal from the braking signal generating means 12g, the OR gate element 13o becomes H level and the AND gate element 13d and the OR gate element 13f amplifier 14d drive element 4 Is activated and braking is applied.

At this time, even if the door open signal 11a is disconnected for some reason, the door open braking operation can be continued without changing the door open braking operation according to the output of the inverter 13j which obtains the inversion signal of the door closing signal 11b. Can be.

When the door opening signal 11a and the door closing signal 11b are turned on at the same time during the door opening braking, the output of the AND gate element 13K is at the H level, and the inverter element 13L is at the L level. The outputs of the gate elements 13m and 13n are at the L level, the outputs of the inverters 13i and 13j are at the H level, and the outputs of the AND gate elements 13c and 13d are at the H level. The amplifiers 14c and 14d operate through the gate elements 13e and 13f, and drive the driving elements 3 and 41 to apply braking.

Next, in the door closing operation, power is supplied from the (+) side of the power supply device 1 in the same manner as in the first embodiment, and the power supply device is supplied through the drive element 2, the DC motor 10, and the drive element 4. Current flows to the negative side of (1), and the DC motor 10 is rotating in the opposite direction to the door opening direction.

At this time, when the door is opened, the driving element 2 is continuously ON controlled according to the output of the amplifier 14b, while the driving element 4 is switched by the amplifier 14d according to the output of the PWM generation circuit 12e. In response to the deviation between the speed command value and the speed detection value, the pulse width is controlled to accelerate gradually.

After that, when the speed of the DC motor 10 reaches the speed command value and the deviation becomes small, the ON time of switching is shortened and the current value flowing through the DC motor 10 is lowered to rotate the constant speed.

Next, when the door reaches the deceleration point, the operation shifts to the braking operation.

When the door closing and braking, i.e., when the speed command value from the speed pattern generation circuit 12b becomes smaller than the speed detection value by the speed detector 12c, the power running signal generating means (in accordance with the output of the differential amplifier 12d) The power running signal from 12f) is cut off and the braking signal generating means 12g is operated to generate a braking signal.

When the drive element 2 is turned off at the same time as the power running signal is turned off, and the door open signal 11a and the door closed signal 11b are not in the ON state at the same time, the door open signal 11a and the door closed signal are The output of the AND gate element 13k, which is logical to 11b, is at the L level, and the output of the inverter element 13L is at the H level.

Since the AND gate element 13m becomes L level and the inverter element 13i becomes H level, the OR gate element 130 becomes H level by the braking signal from the braking signal generating means 12g, and the AND gate element ( 13c), the OR gate element 13e, the amplifier 14C, and the drive element 3 operate to brake.

At this time, even when the door closing signal 11b is disconnected due to any cause, the door closing braking operation is performed without changing the door closing braking operation according to the output of the inverter 13i which obtains the inversion signal of the door opening signal 11a. You can continue.

When the door opening signal 11a and the door closing signal 11b are turned on at the same time during the door closing braking, the output of the AND gate element 13k is at the L level, and the output of the H level inverter element 13l is at the L level. The outputs of the AND gate elements 13m and 13n are at the L level, the outputs of the inverters 13i and 13j are at the H level, and the outputs of the AND gate elements 13C and 13d are at the H level, and as a result, The amplifiers 14c and 14d operate through the OR gate elements 13e and 13f to drive the driving elements 3 and 4 to apply braking.

Therefore, according to the second embodiment, the braking logic circuit is configured to forcibly turn off the door opening and closing signal and output a braking signal when the door opening signal and the door closing signal are turned on at the same time. At the same time, even when it is turned on, the door can be stopped by applying a brake to the DC motor driving the door immediately, and the door can be prevented from being completely closed by the self closing force of the door.

Example 3

Next, FIG. 3 is a block diagram showing the control device of the elevator door according to the third embodiment.

In Fig. 3, the same parts as those in Embodiments 1 and 2 shown in Figs. 1 and 2 are denoted by the same reference numerals and the description thereof will be omitted.

As a new configuration, 13P indicates a NOR element for detecting simultaneous OFF of the door open signal 11a and the door closed signal 11b, and this NOR element 13P and the AND gate element 13C as in the first and second embodiments. And a braking logic circuit composed of (13d), OR gate elements (13e) and (13f), inverter elements (13i) and (13j), and OR gate element (13o) to form the door open signal (11a) and the door. The braking signal is forcibly outputted when the closing signal 11b is turned off at the same time.

Next, the operation by the above configuration will be described.

First, at the time of the door opening operation, power is supplied from the positive side of the power supply device 1 in the same manner as in the first embodiment, and the power supply device is driven through the drive element 5, the DC motor 10, and the drive element 3. The current flows to the negative side of the DC motor 10.

At this time, when the door is opened, the driving element 5 is continuously ON controlled in accordance with the output of the amplifier 14a, while the driving element 3 is switched by the amplifier 14c in accordance with the output of the PWM generation circuit 12e. In response to the deviation between the speed command value and the speed detection value, the pulse width is controlled to accelerate gradually.

Thereafter, when the speed of the DC motor 10 reaches the speed command value and the deviation is small, the ON time of switching is shortened and the current value flowing through the DC motor 10 is lowered to rotate the constant speed.

Next, when the door reaches the deceleration point, the operation shifts to braking.

When the speed command value from the speed pattern generation circuit 12b becomes smaller than the speed detection value by the speed detector 12C at the time of door opening braking, the power running signal generating means 12f is in accordance with the output of the differential amplifier 12d. The power running signal from the vehicle is cut off, and the control signal generating means 12g is operated to generate a braking signal.

When the driving element 5 is turned off at the same time as the power running signal is turned off, and the door opening signal 11a and the door closing signal 11b are not in the OFF state at the same time, the door closing signal of the door opening signal 11a is closed. The output of the NOR gate element 13p obtaining the logical sum with (11b) is L level, and the OR gate element 13o becomes H level by the braking signal from the braking signal generating means 12g, and the door closing signal 11b. The AND gate element 13d and the OR gate element 13f amplifier 14d driving element 4 are operated by the output of the inverter element 13j that obtains the inverted signal of N 하여.

At this time, even if the door open signal 11a is disconnected for some reason, the door open braking operation can be continued without changing the door open braking operation according to the output of the inverter 13j which obtains the inversion signal of the door closing signal 11b. Can be.

In addition, when the door open signal 11a and the door closed signal 11b are turned off at the same time during the door open braking, the outputs of the inverter elements 13i and 13j become H level, and the NOR gate element 13p. Since the output of H is at the H level, the outputs of the AND gate elements 13c and 13d are at the H level, and as a result, the amplifiers 14C and 14d operate and drive through the OR gate elements 13e and 13f. The elements 3 and 4 are driven to brake.

Next, in the door closing operation, power is supplied from the (+) side of the power supply device 1 in the same manner as in the first embodiment, and the power supply device is supplied through the drive element 2, the DC motor 10, and the drive element 4. Current flows to the negative side of (1), and the DC motor 10 is rotating in the opposite direction to the door opening direction.

At this time, when the door is opened, the driving element 2 is continuously ON controlled according to the output of the amplifier 14b, while the driving element 4 is switched by the amplifier 14d according to the output of the PWM generation circuit 12e. In response to the deviation between the speed command value and the speed detection value, the pulse width is controlled to accelerate gradually.

Then, when the speed of the DC motor 10 reaches the speed command value and the deviation is small, the ON time of switching is shortened and the current value flowing through the DC motor 10 is lowered to rotate the constant speed.

Next, when the door reaches the deceleration point, the operation shifts to the braking operation.

When the door closing braking, i.e., when the speed command value from the speed pattern generation circuit 12b becomes smaller than the speed detection value by the speed detector 12c, the power running signal generating means (in accordance with the output of the differential amplifier 12d) The power running signal from 12f) is cut off, and the braking signal generating means 12g is operated to generate a braking signal.

When the driving element 2 is turned off at the same time as the power running signal is turned off, and the door opening signal 11a and the door closing signal 11b are not turned off at the same time, the output of the NOR gate element 13P is L. Level, the OR gate element 13o becomes H level by the braking signal from the braking signal generating means 12g, and the AND gate element 13c, OR gate element 13e, amplifier 14c, and drive element 3 ) Is activated and braking is applied.

At this time, even when the door closing signal 11b is disconnected for some reason, the door closing braking operation does not occur in the door closing braking operation according to the output of the inverter element 13i which obtains the inversion signal of the door opening signal 11a. You can continue.

When the door opening signal 11a and the door closing signal 11b are turned off at the same time during the door closing braking, the output of the NOR gate element 13P is at the H level, and the output of the OR gate element 13o is at the H level. Since the outputs of the inverter elements 13i and 13j are at the H level, the outputs of the AND gate elements 13C and 13d are at the H level, and as a result, the OR gate elements 13e and 13f are obtained. The amplifiers 14c and 14d operate by driving the driving elements 3 and 4 to apply braking.

Therefore, according to the third embodiment, the braking logic circuit is configured to output the braking signal by forcibly outputting the braking signal when the NOR element 13P detects the simultaneous OFF of the door opening and closing signal, so that the DC motor for driving the door even when the door opening and closing signal is turned OFF at the same time. It is possible to stop the door by braking immediately, improve safety to the user, and prevent the door from being completely closed by the self closing force of the door.

Example 4

Next, FIG. 4 is a block diagram showing the control device of the elevator door according to the fourth embodiment.

In Fig. 4, the same parts as in the conventional example shown in Fig. 9 are denoted by the same reference numerals, and the description thereof is omitted.

As a new symbol, 20 is a relay which drops out when the AC power source 1e is turned off, closes the contacts 20a and 20b, and opens the contacts 20C and 20d, and 21a and 21b open and close the door. When the power is cut off at the time, the battery is connected to the gate terminals of the driving elements 3 and 4 which operate at the time of braking, and the driving elements 3 and 4 are turned ON to display the storage battery for braking operation. .

By the contacts 20a to 20d and the batteries 21a and 21b, the driving elements 3 and 4 are separated from the driving command generation circuit 14 when the power is cut off during the door opening and closing operation. To drive the door by connecting the storage batteries 21a and 21b to the gate terminals of the driving elements 3 and 4 to turn on the driving elements 3 and 4 to perform a braking operation. The braking switch is configured to stop the door by braking the DC motor 10 immediately.

In the elevator door control apparatus according to the fourth embodiment, the door opening operation and the door closing operation are performed as in the conventional example, but the relay 20 drops out when the power cutoff of the AC power source 1e occurs during the door opening and closing operation. The driving elements 3 and 4 which are operated at the time of braking by opening the contacts 20C and 20d are separated from the amplifiers 14C and 14d, and the contacts 20a and 20d are closed to close the driving elements ( The DC power supply by the storage batteries 21a and 21b is supplied to the gate terminals of 3) and (4).

Then, the driving elements 3 and 4 are turned ON to perform braking operation by using the generated energy generated by the rotation of the self-driving DC motor 10.

In addition, the generated voltage generated by the rotation of the self-producing DC motor 10 has a different polarity according to the rotation direction, and the current path during braking is the self-producing DC motor 10, the driving device 4, the rectifying device 7 and A closed circuit of the self-loading DC motor 10 or a closed circuit of the self-loading DC motor 10, the driving device 3, the rectifying element 8 and the self-loading DC motor 10 flows.

Therefore, according to the fourth embodiment, when the power is cut off, the drive element 3 and 4 which are detected by the relay 20 and operate at the time of braking are separated from the drive command generation circuit 14 side, and the drive is performed. Self-contained direct-current motor that drives the door even when the power supply is cut off during the door opening and closing operation by connecting the storage batteries 21a and 21b to the gate terminals of the elements 3 and 4 so as to turn on the driving element. It is possible to improve safety to the user by stopping the door immediately by applying the brake to (10), and prevent the door from being completely closed by the self closing force of the door.

Example 5

Next, FIG. 5 is a block diagram showing the control device of the elevator door according to the fifth embodiment.

In Fig. 5, the same parts as those in the fourth embodiment shown in Fig. 4 are denoted by the same reference numerals and the description thereof will be omitted.

As the new reference numerals 22a and 22b indicate the rectifier elements and are contacted by the contacts 20a to 20d of the relay 20 and the rectifier elements 22a and 22b drop-out when the AC power supply 1e is turned off. When the power is cut off during the door opening and closing operation, the driving elements 3 and 4 are separated from the driving command generating means 14 side, and the driving elements 3 and 4 are turned ON to perform the braking operation. Braking is applied to the self-contained direct-current motor 10 for driving the door to constitute a switching means for braking to stop the door.

The control device of the elevator door according to the fifth embodiment is the same as the conventional example, and the door opening operation and the door closing operation are performed. However, when the AC power source 1e shuts down during the door opening and closing operation, the relay 20 drops out and contacts the contact. 20C and 20d are opened and drive elements 3 and 4, which operate during braking, are separated from amplifiers 14c and 14d, while contacts 20a and 20b are closed to drive element ( 3) and (4) supply the generated voltage generated by the rotation of the self-directed DC motor 10 through the rectifying elements 22a, 22b through the rectifying elements 22a, 22b to turn on the driving elements 3, 4 Control operation.

In addition, the generated voltage generated by the rotation of the self-contained DC motor 10 has a different polarity depending on the rotation direction.

However, even if the polarities differ by the rectifying elements 22a or 22b, the control operation can be performed by turning ON the driving elements 3 and 4.

In addition, the current path at the time of braking is a closed circuit or a self-contained direct-current motor 10, a drive element 3 of a self-contained direct-current motor 10, a drive element 4, a rectifying element 7 and a self-contained direct-current motor 10. And a closed circuit of the rectifier element 8 and the self-contained direct-current motor 10.

Therefore, according to the fifth embodiment, when the power is cut off, the driving elements 3 and 4 which are detected by the relay 20 and operate at the time of braking are separated from the driving command generation circuit 14 side, and at the same time, the driving is performed. The self-contained direct-current motor (10) which drives the door even when the power supply is shut off during the door opening / closing operation by supplying the generated power of the self-contained direct-current motor (10) to the gate terminals of the elements (3) and (4). ), The user can stop the door immediately to improve safety to the user, and prevent the door from being completely closed by the self closing force of the door.

Example 6

Next, FIG. 6 is a block diagram showing the control device of the elevator door according to the sixth embodiment.

In FIG. 6, the same parts as those in the fourth embodiment shown in FIG. 4 are denoted by the same reference numerals, 20 is a relay connected to the AC power source 1e, and 20a is a contact of the relay 20. Is connected to both ends of the armature, so that the relay 20 closes when the relay 20 is dropped out to constitute switching means during braking.

By the configuration as described above, the door opening operation and the door closing operation are performed in the same manner as in the conventional example.However, if the power cutoff of the AC power supply 1e occurs during the door opening and closing operation, the relay 20 drops out and the contact 20a is closed. Therefore, both ends of the DC motor 10 are short-circuited, and when the DC motor 10 rotates, the braking operation is performed.

Therefore, according to the sixth embodiment, the switching means for braking is configured to short-circuit the electric nut end of the DC motor 10 in accordance with the relay 20 and the contact 20a that drop out when the AC power source 1e is turned off. Even if the power is cut off during the door opening and closing operation, the DC motor 10 that drives the door can be braked immediately to stop the door, thereby improving safety to the user, and the door is completely closed by the self closing force of the door. You can prevent throwing away.

Example 7

Next, FIG. 7 is a block diagram showing the control device of the elevator door according to the seventh embodiment.

In FIG. 7, the same parts as those in the fourth embodiment shown in FIG. 4 denote the same reference numerals, 20 is a relay connected to the AC power source 1e, 20a is a contact point of the relay 20, and both ends of the DC power line. Is connected so as to short-circuit the circuit, and the switching unit is configured to brake when the relay 20 is closed out.

By the configuration as described above, the door opening operation and the door closing operation are performed in the same manner as in the conventional example, but when the AC power supply 1e is cut off during the door opening and closing operation, the relay 20 drops out and the contact 20a is closed. Therefore, a short circuit occurs at both ends of the DC power line, and the DC motor 10 is rotated so that the braking operation is performed.

That is, when the contact 20a is closed and the motor rotates, the rectifier 7, the DC motor 10, the rectifier 9, the closed circuit or the rectifier 8 of the contact 20a and the rectifier 7, Current flows through the closed circuit of the DC motor 10, the rectifying element 6, the contact 20a, and the rectifying element 8, and the braking operation is performed.

Therefore, according to the seventh embodiment, the relay 20 and the contact 20a drop-out when the AC power source 1e is turned off as a switching means during braking, so as to short-circuit between both ends of the power supply line. Even if this is blocked, the brake is immediately applied to the DC motor 10 driving the door to stop the door so that the user does not collide, and the risk to the user can be solved to improve the stability. It can be prevented from closing completely.

Example 8

Next, FIG. 8 is a block diagram showing the control device of the elevator door according to the eighth embodiment.

In FIG. 8, the same code | symbol as Example 7 shown in FIG. 7 has shown the same part, and the description is abbreviate | omitted.

As a new reference numeral 23 denotes a switch for braking switching means provided between the both ends of the DC power line together with the contact 20a of the relay 20, and is operable to open the shorted braking circuit of the seventh embodiment during elevator maintenance. .

By the configuration as described above, the braking operation can be performed in the same manner as in the seventh embodiment. The braking operation is turned off by removing the braking circuit shorted by the operation of the switch 23 in this case. Maintenance work can be done easily.

Also in the sixth embodiment, the same effect can be expected by providing the switch 23 together with both ends of the armature of the DC motor 10 together with the contact 20a.

Therefore, according to the eighth embodiment, the switching means for braking is provided with a switching 23 for opening the braking circuit shorted in accordance with the detection of the power cut by the relay 20, thereby facilitating the maintenance of the elevator during power cut. Can be.

As described above, according to the present invention, in the event of a brake signal being generated during the door opening or the door closing, the control means for controlling the driving elements of the driving means according to the opening / closing signal of the elevator door is compulsory despite the abnormality of the door opening and closing signal. By providing a braking logic circuit for outputting a braking signal, it is possible to know the door opening braking operation and the door closing braking operation in spite of the door opening and closing signal. The motor can be braked immediately to stop the driving DC motor, preventing the DC motor from free operation, eliminating the risk to the user and improving safety. The door is completely closed by the self closing force of the door. There is an effect that can be prevented to close.

In addition, according to the present invention, the logic of the inversion signal of the door open signal and the braking signal is used as the door closing braking signal, and the logic of the inversion signal of the door closing signal and the braking signal is output as the door open braking signal. Even if the door open signal is turned off during the door open braking, the door open braking signal is obtained by the logic of the reversal signal of the door closing signal and the braking signal so that the door open braking operation can be performed regardless of the door open signal ON or OFF. At the same time, even when the door closing signal is turned off during the door closing braking, the door closing braking signal is obtained by the logic of the reversal signal of the door opening signal and the braking signal, and the door closing braking operation can be performed regardless of the door closing signal ON or OFF. Accordingly, even when the door opening / closing signal is disconnected, the brake is immediately applied to the DC motor driving the door and stopped to free operation. It can improve the safety of a user to prevent, and a door again by the self closing force of the door there is an effect that could be prevented by a fully closed.

According to the present invention, the braking logic circuit is configured to forcibly turn off the door opening and closing signal and output a braking signal when the door opening signal and the door closing signal are turned on at the same time, thereby simultaneously turning on the door opening and closing signal during the door opening and closing operation. Even if it is, the door can be braked immediately by the DC motor driving the door, and the DC motor controlling the door can be prevented from abnormal operation, eliminating the risk to the user and improving safety. There is an effect that it is possible to prevent the door is completely closed by the magnetic closing force of the door.

In addition, according to the present invention, the braking logic circuit is configured to output a braking signal when the door opening signal and the door closing signal are turned off at the same time, so that braking is applied to the DC motor driving the door even when the door opening and closing signal is turned off at the same time. It is possible to stop the door by walking, to prevent the motor controlling the door from abnormal operation, to eliminate the risk to the user and to improve the safety, and to prevent the door from being completely closed by the self closing force of the door. There is an effect that can be prevented.

According to the present invention, the self-contained direct current motor has a self-contained direct-current motor for driving an elevator door, a power supply unit for supplying a direct current power supply to the self-contained direct-current motor, and a drive element having a full bridge configuration in which a rectifying element is reversely connected in parallel. A control apparatus for an elevator door having drive means for reversibly controlling rotation of the drive and control means for driving control of each drive element of the drive means in accordance with an opening / closing command of the elevator door, the detecting means for detecting the interruption of the power supply device. And braking switching means for braking the self-driving DC motor according to the detection signal by the detecting means, thereby braking the self-driving DC motor driving the door even if the power supply is shut off during the door opening / closing operation. It is possible to improve the safety to the user by stopping, and the door is completely closed by the self closing force of the door. There is an effect that can be prevented to close.

According to the present invention, there is provided a storage battery for supplying DC power as the switching means for braking, and the driving element which is operated at the time of braking according to the detection signal by the detecting means is separated from the control means, and the driving element is controlled. The battery is connected to the electrode terminal and the drive element is turned on so that even if the power supply is shut off during the door opening and closing operation, the brake is immediately applied to the self-contained direct current motor that drives the door to prevent abnormal operation. The safety of the door can be improved, and the door can be prevented from being completely closed by the magnetic closing force of the door.

Further, according to the present invention, the braking DC switching motor is separated from the control means, and the control element of the drive element is disconnected from the control means. By supplying the generated power to turn on the drive element, it does not need special power supply and even if the power supply is shut off during the door opening / closing operation, it brakes immediately to the self-contained DC motor that drives the door, which causes abnormal operation. It is possible to improve the safety to the user by preventing it from being prevented, and also to prevent the door from being completely closed by the magnetic closing force of the door.

According to the present invention, the braking switch can be braked by the electric current generated by the rotation of the self-driving DC motor by short circuiting both ends of the armature DC motor according to the detection signal by the detecting means. No special power is required, the power is cut off during the door opening and closing operation, and the brake is immediately applied to the self-contained DC motor that drives the door to stop the door so that the user does not hit it. There is an effect that it is possible to prevent the door is completely closed by the closing force.

According to the present invention, the braking switch is configured to short-circuit the both ends of the power supply line according to the detection signal of the detection means as the switching means for braking, so that braking is possible with the generation current by the rotation of the self-contained DC motor. Even if the power supply is cut off during the door opening and closing operation, the brake is immediately applied to the self-contained direct-current motor that drives the door to stop the door so that the user does not hit it, improving safety. As a result, it is possible to prevent the door from being completely closed.

In addition, according to the present invention, an operation switch for opening a short circuit that is shorted in accordance with a detection signal by the detection means is provided as the switching means for braking, so that the maintenance work of the elevator can be facilitated at the time of power interruption.

Claims (10)

A drive means for reversibly controlling the rotation of the DC motor with a DC motor for driving an elevator door and a drive element having a full bridge configuration, and a control means for driving control of each drive element of the drive means according to an opening / closing signal of the elevator door. A control device for an elevator door, comprising: a braking logic circuit for forcibly outputting a braking signal in spite of an abnormality of a door opening / closing signal according to a control signal generated during door opening or door closing. Elevator door control device. 2. The braking logic circuit of claim 1, wherein the braking logic circuit makes a logic of the inversion signal of the door opening signal and the braking signal as the door closing braking signal, and the logic of the inversion signal of the door closing signal and the braking signal as the door opening braking signal. Elevator door control device, characterized in that output. 2. The control apparatus of an elevator door according to claim 1, wherein said braking logic circuit forcibly turns off the door opening signal and outputs a braking signal when the door opening signal and the door closing signal are turned on at the same time. 2. The control apparatus of an elevator door according to claim 1, wherein said braking logic circuit forcibly outputs a braking signal when the door open signal and the door open / close signal are turned off at the same time. A self-driving DC motor for driving an elevator door, a power supply unit for supplying a DC power supply to the self-driving DC motor, and a full-bridge configuration in which a rectifier element is inversely connected in parallel. A control apparatus for an elevator door having a control means for driving control of each drive element of the drive means in accordance with an opening / closing signal of the means and the elevator door, comprising: detection means for detecting the interruption of the power supply device and detection by the detection means And a switching means for braking to brake the self-current motor according to a signal. 6. The control device according to claim 5, wherein the braking switching means comprises a storage battery for supplying a DC power supply, and the driving device is detached from the control means and controlled by the driving device in accordance with a detection signal by the detecting means. An elevator door control device, characterized in that the battery is connected to an electrode terminal and operated ON. The method of claim 5, wherein the switching means for braking separates the driving element operating during braking according to the detection signal by the detecting means from the control means, and at the same time the control electrode terminal of the self-acting DC motor Control device for an elevator door, characterized in that the ON operation by supplying the generated power. 6. The control apparatus of an elevator door according to claim 5, wherein said braking switching means short-circuits both armatures of said self-directing DC motors during braking according to a detection signal by said detecting means. 6. The control apparatus of an elevator door according to claim 5, wherein said braking switching means short-circuits both ends of a power line during braking according to a detection signal by said detecting means. 10. The control apparatus of an elevator door according to claim 8 or 9, wherein said braking switching means comprises an operation switch for opening a short circuit shorted in accordance with a detection signal by said detecting means.