JP2003104652A - Method for modifying elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for modifying an elevator device, which can change a method for controlling the opening and closing speed for a car door using relays to that using a microcomputer with ease by modifying an existing elevator device. SOLUTION: In this method for modifying the elevator device, an existing elevator control panel 7 is replaced with a microcomputer type elevator control panel 21 for directing the drive of a door motor 5. A door cam switch 9 is removed from a door cam device 4, and a proximity sensor 22 (door position detector) for detecting the rotation state of a door cam disk 3 is attached to the door cam device 4. A microcomputer type door controller 23 for controlling the door motor 5 by processing each signal sent from the microcomputer type elevator control panel 21 and the proximity sensor 22 using a microcomputer is installed in the elevator car 2. Thus, the existing elevator device can be modified easily and quickly by utilizing the elevator device body and parts of the existing elevator device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repairing an existing elevator device having a car door so that the opening / closing speed of the car door is controlled by using a microcomputer.

[0002]

2. Description of the Related Art Generally, the commercial value of elevators (elevators) is high-speed, power-saving, intelligence in control operation, driving accuracy, etc., safety in case of accidents, and aesthetics of elevators. It is decided comprehensively considering the design aspect regarding the appearance. In particular, in recent years, the technical aspects and safety aspects of elevator equipment have dramatically improved by incorporating various service functions that apply electronic technology to elevator equipment. The design is being adopted.

With such a change in the commercial value of the elevator apparatus, it is required to remodel and renovate the existing aging elevator apparatus into an elevator apparatus having a high commercial value that satisfies customer needs. .
Since a repairing technique peculiar to an elevator device is required when repairing an existing elevator device, the form of repair work is unique.

Among such existing elevator systems,
An existing elevator apparatus that controls the opening / closing speed of a car door by relay control has the configuration shown in FIGS. 4 to 6. Among these, FIG. 4 is a block diagram showing the entire existing elevator apparatus, FIG. 5 is a block diagram showing the door cam apparatus constituting the elevator apparatus, and FIG. 6 is a door cam disk and door cam switch constituting the door cam apparatus. It is a block diagram which shows.

As shown in FIG. 4, the existing elevator system comprises a car 2 having a car door 1 and a door cam device 4 having a plurality of door cam discs 3. A door motor 5 is connected to the door cam device 4. Has been done. The door motor 5 is provided with a door link mechanism 6 that transmits the rotational movement of the motor to the car door 1 to open and close the car door 1, and the elevator machine room located away from the car 2 is used for door control. An elevator control board 7 including a resistor 7a is installed, and the door control resistor 7a is connected to the door cam device 4 by a wiring cable 8.

As shown in FIGS. 5 and 6, each door cam disk 3 of the door cam device 4 is attached to a door cam shaft 10 so as to rotate together with the door cam shaft 10. The link mechanism 6 rotates in synchronization with the opening / closing operation of the door car. Further, the door cam device 4 has a door cam switch 9 corresponding to each door cam disk 3. The door cam switch 9 has a fixed side installation plate 11 and a movable side installation plate 12 that is in contact with the outer periphery of the door cam disk 3 and slides as the door cam disk 3 rotates. Door cam disk 3 and movable side installation plate 1
When the diameter of the door cam disk 3 at the contact point with 2 is the minimum, the door cam disk 3 is provided so as to contact the fixed side installation plate 11.

In the elevator apparatus having such a structure, from the door control resistor 7a of the elevator control panel 7,
A drive instruction signal for instructing the opening / closing speed of the car door 1 is sent to the door motor 5 via the door cam device 4. The door motor 5 opens and closes the car door 1 via the door link mechanism 6 by rotating the motor based on the sent drive instruction signal.

At this time, in the door cam device 4, the door cam disc 3 rotates as the car door 1 is opened and closed, and the movable side installation plate 12 slides in accordance with the rotation of the door cam disc 3 to move the movable side installation plate. Reference numeral 12 makes contact with or separates from the fixed side installation plate 11 to switch the resistance value in the door cam device 4, and corrects the drive instruction signal sent from the door control resistor 7a. The drive instruction signal thus corrected by the door cam device 4 is sent to the door motor 5.

Therefore, the door motor 5 is connected to the door cam device 4
At the car door 1 driven by the door motor 5, the motor rotation speed is adjusted based on the drive command signal obtained by correcting the drive command signal from the door control resistor 7a in accordance with the open / close state of the car door 1. Opening and closing speed of the car door 1
It will be controlled by the open / close state of (relay control).

The existing elevator apparatus shown in FIGS. 4 to 6 is modified to change the control method of the opening / closing speed of the car door 1 from relay control to microcomputer control using a microcomputer. The elevator apparatus has the configuration shown in FIG. Have

That is, in the repair of the existing elevator system, the elevator control panel 7 incorporating the door control resistor 7a is replaced with a microcomputer type elevator control panel 21 compatible with microcomputer control, and the car 2 has a car door 1 A proximity sensor 22 for detecting the position of is attached. Further, the door cam device 4 is removed, and the position detection signal indicating the position of the car door 1 sent from the proximity sensor 22 and the opening / closing speed of the car door 1 sent from the microcomputer type elevator control panel 21 are instructed. A microcomputer type door controller 23 for processing the drive signal and the microcomputer by a microcomputer is installed in the car 2. Further, the door motor 5 is replaced with the door motor 5 whose rotation speed is adjusted according to the drive signal sent from the microcomputer type door controller 23.

In this way, the newly installed elevator apparatus, which is provided by renovating the existing elevator apparatus, has the proximity sensor 2
The position detection signal sent from 2 and the drive signal sent from the microcomputer type elevator control board 21 are processed by the microcomputer type door controller 23 by a microcomputer to perform the door motor 5
The door motor 5 adjusts the rotation speed of the motor on the basis of the drive instruction signal sent from the microcomputer type door controller 23. Therefore, the opening / closing speed of the car door 1 determined by the motor speed of the door motor 5 is controlled by the microcomputer type door controller 23 (microcomputer control).

[0013]

As described above, in the existing elevator apparatus which relay-controls the opening / closing speed of the car door 1, the mechanism for opening / closing the car door 1 is mainly controlled by mechanical movement. The door control resistor 7a for relay control related to the opening and closing of the car door 1 is present in the elevator machine room, and has a complicated device configuration.

Therefore, if such an existing elevator device is refurbished and the control method of the opening / closing speed of the car door 1 is changed from relay control to microcomputer control using a microcomputer, the elevator control panel 7, the door cam device 4, Since almost all mechanical parts and devices related to the opening / closing control of the car door 1 such as the door motor 5 will be replaced, the repair work of the elevator device requires complicated work contents and a long work period. To be done. If the work content of the repair work becomes complicated in this way, it is necessary to replace a large number of parts and devices, and the cost of the replacement product increases, and the work cost increases as the working period becomes long. Further, since the elevator device cannot be operated during the work period during the repair work, it causes a great inconvenience to the user of the elevator device.

The present invention has been made in consideration of such a point, and when the existing elevator apparatus is refurbished in order to change the control method of the opening / closing speed of the car door from the relay control to the microcomputer control, the existing equipment is installed. Refurbishing an elevator device that simplifies the refurbishment of an existing elevator device by applying as much as possible the components and devices related to the car door opening / closing control used for the elevator device to microcomputer control of the car door opening / closing speed. The purpose is to provide a method.

[0016]

SUMMARY OF THE INVENTION The present invention relates to a car having a car door, a car door driving device for opening and closing the car door, a door cam disk which rotates with opening and closing of the car door, and a rotation of the door cam disk. A door cam device having a door cam switch for transmitting a drive instruction signal according to a state, and an existing elevator device having a car door opening and closing speed to be controlled by using a microcomputer. In the step of removing the door cam switch from the door cam device, attaching a door position detector to the door cam device for detecting the rotation state of the door cam disc determined by the open / closed state of the car door, and sending from the door position detector. A microcomputer door that controls the car door drive device by processing the incoming position detection signal with a microcomputer and sending a drive instruction signal And the step of placing the car ride for your vessel,
A method for repairing an elevator apparatus, comprising:

According to the present invention, a car having a car door, a car door driving device, and a door cam disk of a door cam device which constitute an existing elevator device are effectively used, and a car door is easily manufactured by a simple method. It is possible to upgrade to a new elevator device that controls the opening / closing speed using a microcomputer.

The present invention relates to a car having a car door,
An elevator device that modifies an existing elevator device equipped with a car door drive that opens and closes the car door via a door link mechanism attached to the car door so as to control the opening and closing speed of the car door using a microcomputer. In the repair method, the step of attaching a door position detector that detects the movement of the door link mechanism determined by the open / closed state of the car door to the car, and the position detection signal sent from the door position detector are processed by a microcomputer. And a step of installing a microcomputer type door controller for controlling a car door drive device in a car by transmitting a drive instruction signal.

According to the present invention, the car having the car door, the car door driving device, and the door link mechanism that compose the existing elevator system are effectively used to control the opening / closing speed of the car door by using the microcomputer. It can be retrofitted to a new elevator system.

The present invention relates to a car having a car door,
A car door drive device for opening and closing the car door, and a door cam device having a door cam disk that rotates with the opening and closing of the car door and a door cam switch that sends a drive instruction signal according to the rotation state of the door cam disk. A position detection signal that can process the drive instruction signal sent from the door cam switch by a microcomputer in the method of repairing the existing elevator device that is modified to control the opening and closing speed of the car door using a microcomputer. The process of installing a level converter that converts the signal to the car and the microcomputer-type door controller that controls the car door drive device by processing the position detection signal sent from the level converter with a microcomputer and sending a drive instruction signal to the car And a step of installing the elevator apparatus.

According to the present invention, it is possible to effectively utilize a car having a car door, a car door drive device, and a door cam device which compose an elevator device, and to control the opening / closing speed of the car door by using a microcomputer. It can be upgraded to an elevator system.

Preferably, the elevator control panel for transmitting a drive instruction signal for driving the car door driving device is a microcomputer type elevator which sends a microcomputer type drive signal to the microcomputer type door controller, which enables microcomputer processing. It further comprises a step of replacing with a control panel.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 are views showing a first embodiment of the present invention. Of these, FIG. 1 is a block diagram showing the entire structure of a new elevator device in which the existing elevator device is modified to control the opening / closing speed of a car door by microcomputer control, and FIG. 2 shows the door cam device of the new elevator device. It is a block diagram shown.

First, the existing elevator apparatus will be described with reference to FIGS. 4 to 6.

As shown in FIG. 4, the existing elevator system includes a car 2 having a car door 1 and a door cam device 4 attached to the car 2 and having a plurality of door cam disks 3. A door motor 5 (a car door drive device) is connected to the door cam device 4, and a door link mechanism 6 for transmitting the rotational motion of the motor to the car door 1 to open and close the car door 1 is attached to the door motor 5. There is. Further, an elevator control panel 7 having a door control resistor 7a built therein is installed in an elevator machine room located away from the car 2, and the door control resistor 7a is connected by a wiring cable 8 to a door cam device. 4 is connected.

Each door cam disk 3 of the door cam device 4
As shown in FIGS. 5 and 6, the door cam shaft 10 is arranged at equal intervals and rotates together with the door cam shaft 10. The door cam shaft 10 is opened and closed by the door link mechanism 6. It is designed to rotate in synchronization with the operation. Further, the door cam device 4 has a door cam switch 9 corresponding to each door cam disk 3. The door cam switch 9 includes a fixed side installation plate 11,
The movable side installation plate 12 is in contact with the outer periphery of the door cam disk 3 and slides by the rotation of the door cam disk 3. When the diameter of the door cam disk 3 is minimized, the door cam disk 3 is provided so as to be in contact with the fixed side installation plate 11.

In the elevator apparatus having such a structure, from the door control resistor 7a of the elevator control panel 7,
A drive instruction signal for instructing the opening / closing speed of the car door 1 is sent to the door motor 5 via the door cam device 4. The door motor 5 opens and closes the car door 1 via the door link mechanism 6 by rotating the motor based on the sent drive instruction signal.

At this time, in the door cam device 4, the door cam disc 3 rotates as the car door 1 is opened and closed, and the movable side installation plate 12 slides in accordance with the rotation of the door cam disc 3 to move the movable side installation plate. 12 contacts with or separates from the fixed side installation plate 11. In this manner, the movable side installation plate 12 comes into contact with or separates from the fixed side installation plate 11 in accordance with the opening / closing operation of the car door 1, so that the door cam switch 9
Emits a drive instruction signal obtained by correcting the drive instruction signal sent from the door control resistor 7a. A drive instruction signal obtained by correcting the drive instruction signal sent from the door control resistor 7a by the door cam switch 9 is sent to the door motor 5.

The drive instruction signal from the door control resistor 7a is corrected in the door cam device 4 according to the open / closed state of the car door 1, and the rotation speed of the door motor 5 is adjusted based on the drive instruction signal thus corrected. Therefore, the opening / closing speed of the car door 1 can be controlled by the open / close state of the car door 1 (relay control).

According to the present invention, such an existing elevator apparatus is used as a car door 1 like the elevator apparatus shown in FIG.
It will be modified to control the opening and closing speed of the device using a microcomputer.

That is, the elevator control panel 7 is replaced with a microcomputer type elevator control panel 21 capable of transmitting a microcomputer type drive signal for instructing the driving of the door motor 5. The microcomputer type elevator control board 21 does not need to have the door control resistor 7a built therein unlike the elevator control board 7, and thus has a simple structure. And
As shown in FIG. 2, the door cam switch 9 is removed from the door cam device 4, and a proximity sensor 22 (door position detector) for detecting the rotation state of the door cam disk 3 is attached to the door cam device 4. At this time, since it is not necessary to remove the door cam device 4 from the car 2, removal of the door cam switch 9 and attachment of the proximity sensor 22
It is quick and easy. Then, the microcomputer type door controller 23 which processes the microcomputer type drive signal sent from the microcomputer type elevator control board 21 and the position detection signal sent from the proximity sensor 22 by a microcomputer and sends a drive instruction signal to the door motor 5. Is installed in the car 2.

The elevator apparatus thus modified controls the opening / closing speed of the car door 1 by a microcomputer as follows.

That is, the microcomputer type elevator control panel 2
1 sends a microcomputer type drive signal instructing the opening / closing speed of the car door 1 to the microcomputer type door controller 23 for microcomputer processing. When the microcomputer-type drive signal is processed by the microcomputer in the microcomputer-type door controller 23, the microcomputer-type door controller 23 sends a drive instruction signal to the door motor 5. The door motor 5 opens and closes the car door 1 via the door link mechanism 6 by rotating the motor based on the sent drive instruction signal.

At this time, in the door cam device 4, the door cam disk 3 rotates as the car door 1 opens and closes, and the rotation state of the door cam disk 3 is detected by the proximity sensor 22. The rotation state of the door cam disk 3 detected by the proximity sensor 22 is detected by the proximity sensor 22 as a position detection signal.
From the microcomputer type door controller 23.

Therefore, the microcomputer type door controller 23 processes the position detection signal sent from the proximity sensor 22 in addition to the microcomputer type drive signal sent from the microcomputer type elevator control board 21, and drives the position detection signal. An instruction signal is sent to the door motor 5. The door motor 5 is driven based on a drive instruction signal sent from the microcomputer type door controller 23, the rotation speed of the motor is adjusted, and the opening / closing speed of the car door 1 is controlled.

At this time, since the rotation state of the door cam disc 3 is determined by the position of the car door 1, the open / closed state of the car door 1 is detected from the rotation state of the door cam disc 3 detected by the proximity sensor 22. be able to.

Therefore, the microcomputer type door controller 23 carries out a microcomputer process in consideration of the open / closed state of the car door 1 detected by the position sensor, and the rotation speed of the motor is adjusted by the drive instruction signal based on the result of the microcomputer process. ing. Therefore, the opening / closing speed of the car door 1 driven by the door motor 5 is controlled by the open / close state of the car door 1 (microcomputer control).

As explained above, the elevator control panel 7
A microcomputer-type elevator control board 21 capable of transmitting a microcomputer-type drive signal for instructing the drive of the door motor 5
, The door cam switch 9 is removed from the door cam device 4, and the proximity sensor 22 for detecting the rotation state of the door cam disk 3 is attached to the door cam device 4. And
A microcomputer type door controller for processing the microcomputer type drive signal sent from the microcomputer type elevator control board 21 and the position detection signal sent from the proximity sensor 22 by a microcomputer and transmitting a drive instruction signal to control the door motor 5. Install 23 in car 2. By modifying the existing elevator device in this way, it is possible to obtain an elevator device in which the control method of the opening / closing speed of the car door 1 is microcomputer control. Therefore, devices such as a part of the door cam device 4 provided in the existing elevator device and parts can be effectively used, the work contents of the repair work can be simplified, and the parts cost accompanying the repair work can be reduced. be able to. Further, since the repair work can be simplified, the work period can be shortened and the work cost can be reduced.

Next, a modification of the present embodiment will be described.

In the method for repairing an elevator apparatus according to the present invention, instead of the step of removing the door cam switch 9 from the door cam apparatus 4 and attaching the proximity sensor 22 for detecting the rotating state of the door cam disk 3 to the door cam apparatus 4, the door link is replaced. The door link mechanism 6 is attached to the car 2 near the mechanism 6.
May have a step of attaching a proximity sensor (not shown) for detecting the movement of the.

In this case, the movement of the door link mechanism 6 is determined by the open / closed state of the car door 1. Therefore, from the movement of the door link mechanism 6 detected by the proximity sensor, the car door 1
The open / closed state of can be detected. Further, the microcomputer type door controller 23 processes the microcomputer type drive signal sent from the microcomputer type elevator control board 21 and the position detection signal sent from the proximity sensor by a microcomputer and outputs a drive instruction signal to the door motor 5. The door motor 5 is controlled based on the drive instruction signal sent from the microcomputer type door controller 23. Therefore, the door motor 5
The opening / closing speed of the car door 1 driven by the vehicle is controlled by the open / close state of the car door 1.

Therefore, also in this modification, it is possible to effectively use the devices and parts such as the door link mechanism 6 provided in the existing elevator device, simplifying the work contents of the repair work and performing the repair work. It is possible to reduce the cost of parts associated with the work, simplify the repair work, and shorten the work period.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG.

FIG. 3 is a diagram showing a second embodiment of the present invention. Here, FIG. 3 is a configuration diagram showing the entire new elevator apparatus in which the existing elevator apparatus is modified to control the opening / closing speed of the car door by microcomputer control.

The second embodiment of the present invention shown in FIG.
The proximity sensor 22 for detecting the rotation state of the door cam disk 3 by removing the door cam switch 9 from the door cam device 4
Instead of the step of attaching the door cam device 4 to the door cam device 4, by converting the drive instruction signal sent from the door cam switch 9 between the door cam device 4 and the microcomputer type door controller 23 into a position detection signal which can be processed by the microcomputer. It is provided with a step of installing the level converter 25 to be sent to the microcomputer type door controller 23 on the car 2.

The other structure is substantially the same as that of the first embodiment shown in FIGS.

In FIG. 3, the first shown in FIG. 1 and FIG.
The same parts as those in the embodiment will be designated by the same reference numerals and detailed description thereof will be omitted.

As in this embodiment, the level converter 25
By installing the car on the car 2, the elevator control panel 7 is replaced with a microcomputer type elevator control panel 21 capable of transmitting a microcomputer drive signal for instructing the driving of the door motor 5, and the level converter 25 is mounted on the car. Install on top of 2. Further, the microcomputer type door for controlling the door motor 5 by microcomputer processing the microcomputer type drive signal sent from the microcomputer type elevator control board 21 and the position detection signal sent from the proximity sensor 22 and transmitting the drive instruction signal. The controller 23 is installed in the car 2. In this way, the existing elevator device can be easily modified to provide an elevator device in which the control method of the opening / closing speed of the car door 1 is changed from relay control to microcomputer control.

In the elevator apparatus modified according to the present embodiment, in the door cam apparatus 4, the door cam disk 3 rotates as the car door 1 opens and closes, and the movable side installation plate 12 moves in accordance with the rotation of the door cam disk 3. Slides,
The movable side installation plate 12 comes into contact with or separates from the fixed side installation plate 11 according to the opening / closing operation of the car door 1. This allows
The door cam switch 9 sends a drive instruction signal to the level converter 25 according to the open / close state of the car door 1.

The level converter 25 converts the drive instruction signal sent from the door cam switch 9 into a position detection signal that can be processed by a microcomputer, and this position detection signal is transferred from the level converter 25 to the microcomputer type door controller 23. Have been sent to.

In the microcomputer type door controller 23, the microcomputer type drive signal sent from the microcomputer type elevator control board 21 and the position detection signal sent from the level converter 25 are processed by a microcomputer and a drive instruction signal is sent to the door motor. 5, the door motor 5 is controlled based on the drive instruction signal sent from the microcomputer type door controller 23. Therefore, the opening / closing speed of the car door 1 driven by the door motor 5 is controlled by the open / close state of the car door 1.

As described above, according to the present embodiment, it is possible to effectively use the devices and parts such as the door cam device 4 provided in the existing elevator device, and simplify the work contents of the repair work. In addition, it is possible to reduce the cost of parts involved in the repair work, simplify the repair work, and shorten the work period.

[0054]

As described above, according to the present invention,
The existing elevator system is refurbished to control the opening / closing speed of the car door from relay control by microcomputer control by effectively utilizing the devices and parts such as the door cam device and door link mechanism of the existing elevator system. As a result, the existing elevator device can be easily and quickly refurbished into a new elevator device in which the opening / closing speed of the car door is controlled by a microcomputer.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an entire new elevator device in which an existing elevator device is modified to control the opening / closing speed of a car door by microcomputer control.

FIG. 2 is a configuration diagram showing a door cam device of a new elevator device.

FIG. 3 is a configuration diagram showing an entire new elevator device in which the existing elevator device is modified to control the opening / closing speed of a car door by microcomputer control.

FIG. 4 is a configuration diagram showing an entire existing elevator apparatus.

FIG. 5 is a configuration diagram showing a door cam device that constitutes an elevator apparatus.

FIG. 6 is a configuration diagram showing a door cam disk and a door cam switch that constitute the door cam device.

FIG. 7 is a diagram showing an elevator apparatus in which the control method of the opening / closing speed of the car door is changed from relay control to microcomputer control.

[Explanation of symbols]

1 basket door Two car 3 door cam disc 4 door cam device 5 door motor 6 Door link mechanism 7 Elevator control panel 7a Door control resistor 8 wiring cable 9 Door cam switch 10 Door cam shaft 11 Fixed side installation plate 12 Movable side installation plate 21 Microcomputer type elevator control panel 22 Proximity sensor 23 Microcomputer type door controller 25 level converter

Claims (4)

[Claims] 1. A car having a car door, a car door driving device for opening and closing the car door, a door cam disk which rotates with opening and closing of the car door, and a drive instruction signal according to a rotating state of the door cam disk. A door cam device having a door cam switch for transmitting, and a method for repairing an elevator device, wherein an existing elevator device having a door cam switch is controlled to control an opening / closing speed of a car door by using a microcomputer. And installing the door position detector on the door cam device that detects the rotation state of the door cam disc, which is determined by the open / closed state of the car door, and the microcomputer processes the position detection signal sent from the door position detector. Install a microcomputer door controller in the car that sends a drive instruction signal to control the car door drive. Renovation method for an elevator apparatus characterized by comprising: a step. 2. A car door having a car door, and a car door drive device for opening and closing the car door via a door link mechanism attached to the car door, and an existing elevator device having a car door opening / closing speed. In a method of repairing an elevator device that is modified to control a car using a microcomputer, the process of attaching a door position detector to the car that detects the movement of the door link mechanism determined by the open / closed state of the car door, and the door position detection And a step of installing a microcomputer type door controller for controlling a car door driving device by processing a position detection signal sent from the device by a microcomputer and transmitting a drive instruction signal to the car. Equipment repair method. 3. A car having a car door, a car door driving device for opening and closing the car door, a door cam disk which rotates with the opening and closing of the car door, and a drive instruction signal according to a rotating state of the door cam disk. A door cam switch having a door cam switch for transmitting a signal is sent from the door cam switch in a method for repairing an elevator device that modifies an existing elevator device equipped with a door cam switch to control the opening / closing speed of a car door using a microcomputer. Installing a level converter that converts the incoming drive instruction signal into a position detection signal that can be processed by a microcomputer, and processing the position detection signal sent from the level converter by a microcomputer to send a drive instruction signal to drive the car door And a process of installing a microcomputer type door controller for controlling the device in a car, the elevator device being modified. Method. 4. A microcomputer type elevator control that sends a microcomputer type drive signal to the microcomputer type door controller, which is capable of performing microcomputer processing in the microcomputer type door controller. The method for repairing an elevator apparatus according to claim 1, further comprising a step of replacing the elevator apparatus.