KR100336340B1 - Door apparatus for elevator - Google Patents

Abstract

The present invention relates to a technology for selectively controlling the opening and closing operation of each door with a single driving device in a double-deck type elevator in which two cars are connected up and down on one hoistway. An elevator driving control device 31 for outputting a door open command, a door close command, and driving target door information for selectively opening and closing the doors, each of which is installed in the lower car, using one driving device; A door control device 32 configured to control the door driver 34 and the car door restraint driver 38 by receiving the door commands and the door information to be driven; A door driver 34 generating power for selectively opening and closing doors of upper and lower cars according to a control command from the door control device 32; Power is received from the door driver 34 and the upper and lower car door restraints 19a, 19b and 19c and 19d are driven according to a control command input from the door control device 32. Is achieved by a cardor restraint drive 38 for selectively opening and closing the door.

Description

Door device of elevator {DOOR APPARATUS FOR ELEVATOR}

The present invention relates to a technique for opening and closing the door of the elevator, in particular, in a system in which two or more cars are connected up and down to one hoistway, the elevator door to be suitable for opening and closing the doors of a plurality of cars with one drive device Relates to a device.

In recent years, in response to the demand for increasing the transport capacity due to the rise of buildings, technologies related to speeding up the elevator operation speed and driving efficiency have been actively developed. However, it is common to increase the number of elevators in order to increase the transport capacity. In this case, the area occupied by the elevator in the building is widened, and there is a problem in that additional facilities and costs are accompanied.

For this reason, double deck elevators have attracted attention in recent years. Double-deck elevators are systems that allow two or more cars to run on the same hoistway while stopping or boarding or getting off two or more floors at the same time.

1 is a schematic view of a double deck elevator according to the prior art, as shown therein, a drive sheave 3 for driving the main rope 1 in one direction or the opposite direction by receiving a rotational force from a drive motor; An upper car (4) and a lower car (5) which are connected to the main rope (1) on one side with the driving sheave (3) up and down simultaneously and simultaneously transport passengers; A counter weight (7) for driving the upper car (4) and the lower car (5) in a stable state; The upper and lower cars 4 and 5 are respectively provided, and the car doors 9a and 9b are connected to the boarding doors 10a and 10b to control the entrance and exit of the passengers.

Figure 2a, 2b is a schematic view of the door opening and closing device in a double deck elevator according to the prior art, as shown therein, the door driving portion 11 is located on the top of the car, which is a rotating transmission portion 13a made of a belt or chain, etc. The second deceleration pulley 12b and the first door link 15a are connected to the deceleration pulleys 12a and 12b through a rotary joint 16a installed on the surface of the second deceleration pulley 12b through 13b. Is connected. Each door link 15a-15f is connected to each of the door panels 14a and 14b by the respective rotary joints 16a-16j. The fourth rotary joint 16d and the fifth rotary joint 16e have a fixed position to transmit only a rotational force. The door opening and closing device of the upper car is configured as described above, and the door opening and closing device of the lower car is configured in the same manner.

Fig. 3 is a block diagram of a door apparatus according to the prior art, which is installed in a control panel of a machine room to give each door opening and closing instruction to the upper car door control device 32U and the lower car door control device 32L. And elevator operation control device 31; An upper car door control device 32U and a lower car door control device 32L for controlling the door driving unit of the car in accordance with a control command input from the operation control device 31; Door driver 34U and 34L for driving the door of the car according to the control of the upper car door control device 32U and the lower car door control device 32L; The upper car door position detection device 35U and the lower car door position detection device 35L for detecting the door position of each car are comprised.

The upper car door control device 32U includes: an upper car door control signal input unit 32Ua for receiving a door open / close command from the elevator operation control device 31; Analyze the door control signal input through the upper car door control signal input unit 32Ua and determine the current position of the door by using the signal input from the upper car door position detecting device 35U and control the upper car door motor. An upper car door control signal processor 32Ub for giving a control command to 32Ub; An upper car door motor control unit 32Uc for receiving a control command for controlling the driving of the upper car door motor 34Ub according to a control command output from the upper car door control signal processor 32Ub; The serial communication unit 32Ud for transmitting and receiving other information data related to the door control with the elevator driving control device 31 is configured, and the lower car door control device 32L is similarly configured.

In addition, the upper car door driver 34U supplies a three-phase power source 33 to control the amount of current applied to the upper car door motor 34Ub according to a motor control command input from the upper car door control device 32U. A top car door motor drive device 34Ua for converting appropriately; The upper car door motor driver 34Ua receives a drive current from the upper car door motor 34Ub to open and close the door, and the lower car door driver 34L is configured in the same manner.

Referring to the operation of the conventional door device configured as described above are as follows.

First, as shown in FIG. 1, when the drive sheave 3 is driven by the drive motor, the main rope 1 wound around the drive sheave 3 moves in one direction or the opposite direction. However, the counterweight 7 is connected to one side of the main rope 1, and the upper car 4 and the lower car 5 are connected to the other side in a double deck form.

Accordingly, the upper car 4 and the lower car 5 carry passengers while driving up or down at the same time. The number of floors that can carry passengers is determined according to the separation distance between the upper car 4 and the lower car 5, and even if the number of cars is added, the floors are operated in the same principle. Of course, the upper car 4 and the lower car 5 include respective car doors 9a and 9b, which are opened and closed in association with the respective landing doors 10a and 10b.

In order to open and close the card doors 9a and 9b, a door driver 11 including a door motor is generally installed on the upper and lower cars 4 and 5, and the door driver 11 and The door panels are connected by a link structure. In such a system, the card doors 9a and 9b are opened and closed by the geometric movement of the link due to the rotation of the motor.

The door system applied to the conventional double deck elevator is applied as it is without changing the door device of an elevator having a single car as shown in Figs. 2a, 2b, and the device for controlling the door is also built separately for each car. Therefore, since the opening and closing principles of the card doors 9a and 9b are the same, the upper card door 9a will be described as an example.

When the door driving unit 11 is driven, the first deceleration pulley 12a is rotated by the first rotation transmission unit 13a, and this rotation is performed through the second rotation transmission unit 13b added as necessary. It is transmitted to the deceleration pulley 12b. The first door link 15a connected to the surface of the final deceleration pulley through the first rotation joint 16a moves along the path in which the second reduction pulley 12b rotates.

In other words, the door of the elevator having a link structure forms a door drive transmission system composed of a combination of the door links 15 and the rotary joint 16, and moves along the second deceleration pulley 12b of the first door link 15a. The door links 15 connected to the rotary joints 16 are moved. As a result, the movement of the door driving unit 11 is connected to the opening and closing operation of the door panel 14 by this transmission system.

When the upper car door open command 37Ua is output from the elevator driving control device 31, it is transmitted to the upper car door control signal processing unit 32Ub through the upper car door control signal input unit 32Ua. At this time, the upper car door control signal processing unit 32Ub checks the current car door position and generates a control command for continuously maintaining the open state and outputs it to the upper car door motor control unit 32Uc. When it is determined to be in the closed state, a control command for door opening is generated and output to the upper car door motor control unit 32Uc.

Accordingly, the upper car door motor control unit 32Uc generates a current command corresponding to the control command and outputs the current command to the upper car door motor driving device 34Ua of the upper car door driving unit 34U. The opening operation of the door is performed by the motor driving device 34Ua appropriately converting the three-phase power source 33 to the upper car door motor 34Ub.

At this time, the upper car door position detection device 35U detects the current position of the door opened by the driving of the upper car door motor 34Ub and outputs it to the upper car door control signal processor 32Ub. Accordingly, the upper car door control signal processing unit 32Ub generates a control command for maintaining the open state from the open completion time to the closing start time and outputs the control command to the upper car door motor control unit 32Uc.

Thereafter, when the upper car door close command 37Ub is output from the elevator driving control device 31, it is transmitted to the upper car door control signal processor 32Ub through the upper car door control signal input unit 32Ua. At this time, the upper car door control signal processing unit 32Ub checks the current car door position, and when it is determined to be in a closed state, generates a control command for maintaining the state and outputs it to the upper car door motor control unit 32Uc, and opens it. If it turns out to be a state, it generates a control command to start the door closing and outputs it to the upper car door motor control unit 32Uc.

Accordingly, the upper car door motor control unit 32Uc generates a current command corresponding to the control command, and outputs the current command to the upper car door motor driving device 34Ua of the upper car door driving unit 34, and accordingly, the upper car door The motor driving device 34Ua appropriately converts the three-phase power source 33 and applies it to the upper car door motor 34Ub, thereby closing the door.

At this time, the upper car door position detection device 35U detects the current position of the door closed by the driving of the upper car door motor 34Ub and outputs it to the upper car door control signal processor 32Ub. Accordingly, the upper car door control signal processing unit 32Ub generates a control command for maintaining the closed state from the closing completion time to the opening start time and outputs the control command to the upper car door motor control unit 32Uc.

On the other hand, if the close command output from the elevator operation control device 31 is interrupted and the open command starts to be output while the door close operation is being performed, the close operation is stopped by this and the open operation is resumed as described above.

Recent trends in the construction industry suggest that efficient use of space is of paramount importance. This is no exception to elevators. Nevertheless, in the conventional double-deck elevator, one door driving unit is provided at the top of each car.

Therefore, in the case of the conventional double-deck elevator, the space of the upper part of the car is narrow, making it difficult to secure space during maintenance work. Furthermore, the overhead of the upper part of the car considering the door driving part (the distance between the floor of the top floor and the ceiling of the hoistway) is also increased. There was a defect that the whole length was unnecessarily long.

Accordingly, an object of the present invention is to provide an elevator door apparatus that controls the door opening and closing of each car using only one driving device in an elevator system for driving two or more cars up and down in one hoistway.

1 is a schematic view of a double deck elevator according to the prior art.

Figure 2a, 2b is a schematic view of the door opening and closing device in a double deck elevator according to the prior art.

3 is a block diagram of a door apparatus according to the prior art.

Figure 4a-4d is an explanatory view of the opening and closing operation of the door in the double deck elevator applied to the present invention.

5 is a block diagram of a door apparatus of an elevator according to the present invention.

6 is a schematic view of a double deck elevator system according to the present invention.

7 is a flow chart of the door opening control signal according to the present invention.

8 is a flowchart illustrating a door closing control signal according to the present invention.

9 is another embodiment of the present invention.

10 is another exemplary embodiment of the present invention.

11 is another exemplary embodiment of the present invention.

*** Description of the symbols for the main parts of the drawings ***

11 door driving unit 12 speed reduction pulley

13: rotation transmission unit 14: door panel

15,17: Door link 16,18: Rotating joint

19a, 19b: Lower cardor restraint device 19c, 19d: Upper cardoral restraint device

20: sliding guide 21: stop device

22: Door link 31: Elevator operation control device

32: door control device 32a: door control signal input unit

32b: door control signal processor 32c: door motor control specification determiner

32d: Door motor control unit 32e: Serial communication unit

33: three-phase power source 4: door driver

34a: door motor drive device 34b: door motor

35: door position detection device 36: serial communication line

37: parallel communication line 38: car door control device drive unit

38a: Upper cardor restraint driving unit 38b: Lower cardoral restraint driving unit

41: elevator control panel 42: platform serial communication line

43a, 43b: platform control device 44a, 44b: platform display guide device

45a, 45b: platform call button 46: car control device

47U, 47L: Car interior display guide device 48U, 48L: Car interior control panel

Figure 4a is a schematic diagram of a double deck elevator door system to which the present invention is applied, as shown in this, the rotational force of the door drive unit 11 is transmitted to the first deceleration pulley 12a through the first rotation transmission unit 13a, The first deceleration pulley 12a is connected to the second deceleration pulley 12b for operating the lower car and the third deceleration pulley 12c for operating the upper car through respective rotation transmission parts 13b and 13c. Therefore, the rotational force of the door driving unit 11 is transmitted to the deceleration pulleys 12b and 12c of the lower car and the upper car, respectively.

The rotational force at the second deceleration pulley 12b of the lower car is transferred to the door restraints 19a and 19b of the lower car along a kinematic system composed of the lower car door link 15 and the lower car rotation joint 16. And the rotational force of the third deceleration pulley 12c of the upper car is transmitted to the door restraining devices 19c and 19d of the upper car by the upper car door link 17 and the upper car rotation joint 18.

The restraint of the control command instructs the upper and lower doors to operate simultaneously or to operate only one door that is necessary. The door restraining device 19 is a part which receives and operates such a control command. When the door lock device 19 is restrained, the door panel 14 can be opened and closed according to the rotation of the door driver 11, and when the door lock device 19 is opened, the sliding guide 20 installed in the door panel 14 is opened. By moving up to the stopper 21 along, it was configured not to affect the operation of the door panel 14.

4A illustrates a state in which the doors of the upper and lower cars are all closed, 4b is all open, 4c is only the door of the lower car, and 4d is only the door of the upper car.

On the other hand, Figure 5 is a block diagram of the door device of the elevator according to the present invention, as shown in this, in the double-deck type elevator, the doors, which are installed in the upper and lower cars one by one using a drive device as needed An elevator driving control device 31 which outputs a door open command 37a, a door close command 37b, and drive target door information 37c to selectively open and close; A door control device 32 for receiving the door commands 37a and 37b and the driving target door information 37c to control the door driver 34 and the car door restraint driver 38; A door driver 34 generating power for selectively opening and closing doors of upper and lower cars according to a control command from the door control device 32; A car door restraint device driver for receiving power from the door driver 34 and selectively driving the upper and lower card door restrictors 19a, 19b, 19c, and 19d according to a control command input from the door controller 32. It consisted of (38).

The door control device 32 includes a door control signal input unit 32a for receiving door control commands 37a, 37b, driving target door information 37c, etc. from the elevator driving control device 31; A door control signal processor 32b for analyzing and processing the output signal of the door control signal input unit 32a; A door motor control specification determiner 32c for determining various control specifications for controlling the driving of the door motor 34b according to the processing result of the door control signal processor 32b; A door motor controller 32d for outputting a control command to the door driver 34 according to the determined control specification; The serial communication control unit 32e is configured to transmit and receive other information data related to the door control with the elevator operation control apparatus 31.

In addition, the cardor locker drive unit 38 drives the door locker of the drive target door according to the control command output from the door control signal processor 32b of the door control device 32 and until a release command occurs. The door restraint drive unit 38a, 38b of each car which keeps a restraint state was comprised.

Referring to Figures 6 to 8 attached to the operation of the present invention configured as described above in detail as follows.

For example, as shown in FIG. 6, passengers A and B board the upper car 4 and the lower car 5 of the elevator, respectively, and then use the operation panels 48U and 48L in the car. When registering the call or when the passengers C waiting in the landing register the landing call by using the platform call buttons 45a and 45b, the operation control of the elevator driving control device 31 of the elevator control panel 41 is performed. As a result, the upper car 4 and the lower car 5 drive to the corresponding service floor and stop.

At this time, the elevator operation control device 31 is whether the floor on which the other car stopped is the service floor, whether the door can be opened, whether there is a destination call registration, whether there is a platform call in the same direction as the driving direction on the platform of the stop floor, and the like. Judging the situation, it is determined whether to open only the door of the car in response to the call or to open the doors of the upper and lower cars (4) and (5) at the same time, according to the door open command (37a) , Door close command 37b, and drive target door information 37c, which is information of which door to open and close.

The door open command 37a, the door close command 37b, and the drive target door information 37c outputted from the elevator operation control device 31 are connected to the door signal processing unit 32b through the upper car door control signal input unit 32a. The door signal processor 32b analyzes them and performs opening / closing operations of the car doors 9a and 9b as shown in FIGS. 7 and 8.

Meanwhile, an open control process of the card doors 9a and 9b according to the present invention will be described with reference to FIG. 7.

If it is determined that the open command for the doors 9a and 9b of the upper and lower cars 4 and 5 is generated at the same time (SA1), and it is determined that the same occurs simultaneously, the doors of the upper and lower cars 4 and 5 are locked. After driving all of the devices 19a, 19b, 19c, 19d (SA2), and determining the door motor control specification for driving the door motor 34b accordingly (SA7), the door motor controller according to the control specification is determined. At 32d, the door driver 34 is controlled to perform a door opening operation as shown in FIG. 4B. (SA8)

That is, the power of the door driving unit 11 is transmitted to the upper car door restrictors 19c and 19d through a door drive transmission system composed of a combination of the door links 17 and the rotary joint 18, wherein Since the car door restrictors 19c and 19d are in a restrained state, the door 9a of the upper car 4, that is, the door panels 14c and 14d, can be opened. Similarly, the power of the door drive unit 11 is simultaneously transmitted to the lower car door locker 19a, 19b through a door drive transmission system composed of a combination of the door links 15 and the rotary joint 16. At this time, since the lower car door restrictors 19a and 19b are in a restrained state, the door 9b of the lower car 4, that is, the door panels 14a and 14b, can be opened.

However, if it is determined that the simultaneous open command for the card doors 9a and 9b does not occur, the inspection is performed to determine whether only the open command for the card door 9a of the upper car 4 is generated ( SA3). If it is determined that only the off command for the card door 9a is generated, only the door lock devices 19c and 19d of the upper car 4 are driven (SA4), and the door motor 34b is driven accordingly. After the door motor control specification is determined (SA7), the door opening control unit 34d controls the door driving unit 34 according to the control specification, and the door opening operation as shown in FIG. 4D is performed.

That is, the power of the door driving unit 11 is transmitted to the upper car door restrictors 19c and 19d through the above path, and the upper car door restrictors 19c and 19d are in a restrained state. The door 9a of the upper car 4, that is, the door panels 14c and 14d, can be opened. Similarly, the power of the door driver 11 is simultaneously transmitted to the lower car door restrictors 19a and 19b through the above path, but the lower car door restrictors 19a and 19b are opened. The lower car door locks 19a, 19b are moved to the stopper 21 along the sliding guides 20a, 20b of the door panels 14a, 14b by the power. The door 9b of the lower car 4 does not open.

However, as a result of the above inspection, simultaneous opening command to the cardor 9a and 9b of the upper and lower car 4 and 5 is not generated, and only the cardor 9a of the upper car 4 is opened. If it is determined that no off command is generated, it is checked whether only the open command for the cardor 9b of the lower car 5 is generated (SA5). If it is determined that only the open command for the car door 9b of the lower car 5 has been generated, only the door lock devices 19a and 19b of the lower car 5 are driven (SA6), and the door is appropriately fitted. After determining the door motor control specification for driving the motor 34b (SA7), the door motor control part 32d controls the door driving part 34 according to the control specification, and the door opening operation as shown in FIG. This is done (SA8).

Meanwhile, a close control process of the card doors 9a and 9b according to the present invention will be described with reference to FIG. 8.

If it is determined that the close command to the cardor 9a and 9b of the upper and lower cars 4 and 5 has been generated at the same time (SB1), it is determined that the two cardors 9a and 9b are generated at the same time. After the door motor control specification is determined to be suitable for closing at the same time (SB4), the door motor control part 32d controls the door driver 34 to perform the door closing operation according to the control specification. (SB5)

Thereafter, the door closing operation is checked to be completed (SB6), and when it is determined to be completed, the operation of the door restraining devices 19c, 19d and 19a and 19b of the upper and lower cars 4 and 5 is released. (SB7)

However, if it turns out that the close command with respect to cardor 9a, 9b did not generate | occur | produce simultaneously at the same time, it is examined whether only the close command of cardor 9a was generated (SB2). If the inspection result condition is satisfied, the door motor control specification is determined so as to be suitable for closing only one cardor 9a (SB4), and then the door driving unit 34 in the door motor controller 32d according to the control specification. The door closing operation is performed by controlling the operation. (SB5)

However, if the above confirming results indicate that the close command to the upper and lower card doors 9a and 9b does not occur at the same time and that the close command of the upper car door 9a does not occur, the lower card door 9b is closed. Check if only a command is generated (SB3). If the above test result conditions are satisfied, the door motor control specification is determined to be suitable for closing only the lower cardor 9b (SB4), and then the door driving unit 34 is moved by the door motor control unit 32d according to the control specification. By controlling, the door closing operation is performed on the same principle as described above (SB5).

As described in the above description, the reason for determining the door motor control specification according to the door opening / closing command is to consider in advance the difference in the load amount received from one door motor 34b, so that the opening / closing operation of the door is performed by It is to be made in the same way as used.

The door motor control specification determiner 32c uses the door control signal processor 32b to rotate the door motor 34b by using the rotational direction of the door motor 34b, the number of doors to be driven, the current position information of the door, and the like. It determines the various control specifications such as current (or torque limit value), speed control gain (Gain) and informs the door motor controller 34e.

As a simple example, when only one of the card doors 9a and 9b of the upper and lower cars 4 and 5 is driven, the current applied to the door motor 34b is i. When the two doors 9a and 9b are driven at the same time, the load on the door motor 34b is doubled, so that the door motor 34b is controlled in the same speed pattern as when driving one door. The applied current should be 2 * i.

For reference, in the case of the door close, it is necessary to accurately control the closing force for the safety of the passengers, so it may be said that the determination of the door motor control specification using the number of doors to be driven is very important.

On the other hand, only the door 9a of the upper car 4 stopped on the floor is opened for service for calling, and while the passenger is getting on and off, the door of the lower car 4, which is the serviceable floor ( 9b) may not be driven. Then, when a landing call occurs in the landing of the floor where the lower car 5 stops, the passenger unloading of the upper car 4 is completed and the door of the lower car 5 is closed. The door 9b is opened to respond to the lower landing call.

In such a case, the indication guide device 47u inside the upper car 4 is used to guide the reason for departure delay or reopening the door, thereby preventing passengers in the upper car 4 from becoming bored or uncomfortable. You can do it.

On the other hand, Figure 9 shows another embodiment of the present invention. The deceleration pulley of the upper car 4 and the deceleration pulley of the lower car 5 can be used as a single deceleration pulley 12b, which is possible by changing the kinematic design of the door link.

On the other hand, Figure 10 and Figure 11 shows another embodiment of the present invention. After installing the mechanisms for driving the door 9a of the upper car 4 or the door 9b of the lower car 5, the upper and lower door locks 19c, 19d and 19a, 19b are connected to the upper and lower parts. It is a form connected through a link 22, which is advantageous to expand the number of doors to two or more.

In FIG. 10, an example in which the door driver 11 is located on the upper part of the upper car 4 is shown. In FIG. 11, an example in which the door driver 11 is located in the middle of the upper car 4 and the lower car 5 is illustrated. Is showing. 10 and 11, the door driver 11 is located in the upper portion of the lower car 5 as in FIG. 11 rather than in the upper portion of the upper car 4 as in FIG. 10. The small size is advantageous for securing overhead space.

In the above description, the cardor 9a means the entire door of the upper car 4 made of the door panels 14a and 14b, and the car door 9b is a lower car made of the door panels 14c and 14d. 5) means the whole door.

As described in detail above, the present invention has the effect of reducing the cost by allowing a plurality of doors to be selectively opened and closed using one door driver, the space occupied by the door driver in the space above the upper car When omitted, it is possible to reduce the distance between the upper part of the car and the machine room when the car is located on the uppermost floor, thereby reducing the length of the entire hoistway. In addition, it is possible to secure a wider space for the maintenance worker to work on the upper part of the car after the installation of the elevator, it is possible to reduce the installation time due to the simplification of the structure.

Claims (8)

In an elevator in which a plurality of cars are installed and operated in one hoistway, a door open command, a door close command, and a door to be driven to selectively open and close the doors, which are installed on the upper and lower cars, one by one using a drive device An elevator driving control device 31 for outputting information; A door control device 32 configured to control the door driver 34 and the car door restraint driver 38 by receiving the door commands and the door information to be driven; A door driver 34 generating power for selectively opening and closing doors of upper and lower cars according to a control command from the door control device 32; The power is transmitted from the door driver 34 and the upper and lower car door restrictors 19a, 19b, 19c, and 19d are driven according to a control command input from the door control device 32. The door device of an elevator, characterized in that consisting of a car door restraint drive unit for selectively opening and closing the door. The door control device (32) according to claim 1, further comprising: a door control signal input unit (32a) for receiving a door control command and driving target door information from the elevator operation control device (31); A door control signal processor 32b for analyzing and processing the output signal of the door control signal input unit 32a; A door motor control specification determiner 32c for determining various control specifications for controlling the driving of the door motor 34b according to the processing result of the door control signal processor 32b; A door motor controller 32d for outputting a control command to the door driver 34 according to the determined control specification; An elevator door apparatus, comprising: a serial communication controller (32e) for transmitting and receiving other information data related to door control with the elevator operation control apparatus (31). The door control signal processor 32b analyzes a door control signal input from the elevator driving control device 31 to determine which door to open, and according to the determination result, the cardo accelerator driving device ( 38) outputs a control command for driving the door, and on the other hand, the door using the signal input from the rotation direction of the door motor 34b and the number of the door to be driven and the door position detection device according to the opening and closing of the door. The door device of an elevator, characterized in that configured to output the current position information of the door motor control specification unit (32c). 2. The elevator of claim 1, wherein the cardor restraint driving unit 38 adopts a rotation transmission device and a deceleration pulley using the same so as to open and close the upper and lower doors by the one door driving unit 34. Door device. According to claim 1, The card door restraint device drive unit 38 includes a sliding guide installed on the door panel so that the restraint control device to move smoothly; Elevator device comprising a stop device for designating the stop position of the restraint control device to any portion of the sliding guide. 2. The elevator of claim 1, wherein the cardor restraint driving unit 38 includes a connection link connecting each door to control the upper and lower doors with one door driving unit 34. Door device. 2. The car door restraint driving unit 38 drives the door restraint of the door to be driven according to a control command input from the door control device 32 and maintains the restraint state until a release command occurs. The door device of the elevator, characterized in that configured to. First deceleration pulleys 12a and second and third deceleration pulleys 12b and 12c for simultaneously transmitting rotational force of the door driver 11 to the upper and lower door driving paths; A plurality of lower car door links 15 and lower car rotation joints 16 for transmitting the rotational force in the second deceleration pulley 12b of the lower car to the door restraining devices 19a and 19b; A plurality of upper car door links 17 and lower car rotary joints 18 for transmitting the rotational force of the third deceleration pulley 12b of the upper car to the door restraining devices 19c and 19d; One end of the power transmission system consisting of the lower car door link 15 and the lower car rotation joint 16 is restrained or released on the sliding guides 20a and 20b so as to release the panel 14a of the lower car door 9b. Door locks 19a and 19b of the lower car for allowing the doors 14 and 14b to be opened or closed; One end of the power transmission system consisting of the upper car door link 17 and the upper car rotary joint 18 is restrained or released on the sliding guides 20c and 20d so as to release the panel 14c of the upper car door 9a. An elevator door apparatus comprising a door restraining device (19c), (19d) of an upper car, which makes (d) or (14d) open or closed.