CN1066040A

CN1066040A - Lift appliance

Info

Publication number: CN1066040A
Application number: CN 92103089
Authority: CN
Inventors: 坂井吉男; 小野阳一
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 1991-04-26
Filing date: 1992-04-25
Publication date: 1992-11-11
Anticipated expiration: 2007-04-25
Also published as: JP2917182B2; GB2255204A; JPH05208788A; GB9208375D0; SG18295G; GB2255204B; CN1045187C; HK31095A

Abstract

The invention discloses an elevator device. The device uses a microcomputer to provide a signal to a base drive circuit so as to turn on/off a drive control element to generate a pulse width control voltage, thereby controlling the operation of an elevator door drive motor. The elevator stop signal and door opening/closing permission signal are provided by the elevator control equipment to the microcomputer and the base drive circuit. The base drive has a dual system for its door opening operation, so that the base drive will not provide door opening drive when the signal indicates that the elevator is not out of service and outside the area where opening/merging of doors is permitted. This prevents the opening of the elevator doors when the elevator is in operation and outside the area where door opening/closing is permitted.

Description

Lift appliance

The present invention relates generally to lift appliance, relate in particular to a kind of device of opening and closing in order to the control elevator door.More particularly, the present invention relates to a kind of control device for elevator door,, when elevator is in service and be positioned at outside the zone that allows opening-closing door, door is not opened in order to control elevator door safely.

Known traditional control device for elevator door adopts DC machine and respectively by the driver element of driving and close direction driving elevator door.According to this technology, the ON/OFF of elevator door be by control be applied to the door the time width of opening and close the conduction of current on the corresponding driving element on the direction control, above-mentioned driver element is with preset time cycle driven.

The most important condition that control device for elevator door will satisfy, when elevator was in service and be positioned at outside the zone that allows opening-closing door, elevator door must not carried out opening door operation exactly.In addition, another necessary condition as control device for elevator door is, elevator door should keep being not less than predetermined amount in the power that closes of closing direction, make when elevator when for example barrier or similar reason are suspended the midway location between contiguous floors and be positioned at beyond the zone that allows opening-closing door for some reason, the passenger is unlikely to walk out indiscreetly the elevator cage; Simultaneously, the power that closes of elevator door must like this, could be rescued the passenger who is closed in the compartment from the outside not excessively greater than the amount of determining again.

According to above-mentioned conventional art, when elevator is in service and be positioned at outside the open/close zone of permission elevator door, in Ying Zaiyi preset time width electric current offered on the driver element by the direction of closing the door, keep thus providing one to close power to elevator door, size is about when closing door operation necessary 1/4th.Simultaneously, the driver element on the direction of opening the door enters complete off-state, and the elevator door drives motor is failure to actuate on the direction of opening the door, thereby satisfies above-mentioned condition, opens and close control with what finish elevator door safely.

Yet, adopt above-mentioned conventional art, for example the microcomputer of the driver element on direction is opened the door and closed the door in control occurs under the abnormal condition, producing a kind of fault thus causes microcomputer to provide an instruction, make the complete conducting of driver element on the direction of opening the door, will the problem that elevator door can drive take place on the direction of opening the door.

As a kind of routine techniques that can solve above-mentioned this problem in the relevant control device for elevator door, for example doing disclosure in the JP-A-58-224983 patent document.

According to this routine techniques, there is one when the elevator cage moves, keep open circuited contact to be connected in series on the driver element that opens the door of driving gate on the direction of opening the door, thereby, in the compartment operational process, above-mentioned contact just is in off-state, only has the electric current on the elevator door closing direction to be provided on the motor, not only can keep the power of closing of elevator door thus, and can prevent that elevator door is opened.

Yet, in this routine techniques,, drive this contact so need the elevator control gear from be arranged on machine room draw a signal wire (SW) because above-mentioned contact is arranged in the elevator cage, therefore, between machine room and compartment, must set up a signal wire (SW) in addition.

Also exist a problem to be in the above-mentioned routine techniques, do not have enough reliability,, contact for example is set in power circuit so a countrmeasure must be provided in addition owing to be used for the control setup of elevator door drives motor.

The purpose of this invention is to provide a kind of control device for elevator door, wherein can improve the reliability of this kind control setup by a simple circuit configuration.

To achieve these goals, the lift appliance according to one aspect of the invention can comprise: in order to drive the motor of elevator door; Supply with the quartz conductor control element of the power supply of motor in order to control; Driving circuit based on the instruction of the opening-closing door of elevator control aggregate in order to generation control signal semiconductor supply control element; And by the prearranged signals that elevator control aggregate provided, the control signal that prevents to open the door is offered the equipment of quartz conductor control element by driving circuit.

According to a further aspect in the invention, lift appliance can comprise: in order to drive the motor of elevator door; Be connected between direct supply and the motor, do not insert any mechanization circuit opening/closing device and supply with the quartz conductor control element of the power supply of motor in order to control; According to the instruction of elevator control aggregate, with thinking that the quartz conductor control element produces the artwork generation apparatus of on-off figure; For the on-off figure being arranged in order to produce control signal to feed to the driving circuit of quartz conductor control element; And, prevent that corresponding output is in order to the on-off figure that opens the door with in order to the device of the control signal that opens the door by the prearranged signals that forbidding of being provided by elevator control aggregate opens the door.

According to the sort circuit structure, may and prevent from reliably to offer above-mentioned semiconductor element in order to the control signal of opening elevator door, thus, when running into elevator and open the door situation into danger, when for example elevator is in service or elevator and is positioned at the outside, zone that allows opening-closing door, can forbid the unlatching of elevator door according to the signal of forbidding opening the door.

Figure 1A, 1B, 1C are the block schemes of the complete structure of expression one embodiment of the invention;

Fig. 2 is the block scheme of expression elevator door control circuit of relevant the present invention and elevator control gear part-structure;

Fig. 3 represents the block scheme of a base drive circuit structure according to an embodiment of the invention;

Fig. 4 A, 4B and 4C are the block schemes of the complete structure of expression another embodiment of the present invention;

Fig. 5 is a block scheme of representing a base drive circuit structure according to another embodiment of the present invention.

Hereinafter with reference to the detailed embodiment that introduces according to control device for elevator door of the present invention of accompanying drawing.

Figure 1A, 1B and 1C are the block schemes of the complete structure of explanation one embodiment of the invention, Fig. 2 is the block scheme of expression elevator control gear of relevant the present invention and elevator door control circuit part structure, and Fig. 3 is the block scheme of explanation according to a base drive circuit structure of embodiments of the invention.

Referring to Figure 1A-1C, Fig. 2 and Fig. 3 are with reference to label 1 expression electric machine control microcomputer (be designated hereinafter simply as " MPU(A) "); 2 expression read-only memorys (ROM); 3 expression random access memory (RAM)s (RAM); 4 expression programmable timers (PTM); 5 expression base drive circuits; In the 6 expression elevator door control circuit 22 in order at elevator control gear 9 and such as MPU(A) microcomputer of transmission/reception input/output signal between the element 1 (be designated hereinafter simply as " MPU(B) ").7 expressions are in order at MPU(A) 1, ROM2, RAM3, PTM4, base drive circuit 5 and MPU(B) data bus of transmission signals between 6; 20 expression elevator door drives DC machine; 10 and 11 expressions are in order to the driver element that opens the door by direction control motor 20 runnings of opening the door, and this two driver element is by transistor, igbt (IGBT ₈) or the similar elements formation, thus motor 20 is connected on the direct supply PN that places on the compartment, and need not to adopt any other on-off equipment; 12 and 13 expressions are in order to the driver element of closing the door by the direction drive motor 20 of closing the door; 14 to 17 represent respectively to concern the diode that is connected on the driver element 10 to 13 with inverse parallel; 20a and 20b represent pulley; 20c represents car door; 20d represents belt; 21 expression source of ACs.At the elevator control gear 9 that is arranged in the machine room, reference number 26 expression is in order to the microcomputer of controlling whole elevator (be designated hereinafter simply as " MPU(D) "); 25 expressions are by transmission line 24, in order to send/receive to/from signal transmission/reception MPU(B in the car door control circuit 22) 6 data, and in order to send/receive to/from MPU(D in the elevator control gear in the machine room 9) microcomputer of 26 signal (be designated hereinafter simply as " MPU(C) ").31 expression pulse-width controlled circuits; The non-overlapped circuit of 32 expressions; 33 expression watch-dog timers; 36 to 39 expression base drive device amplifiers.

One embodiment of the present of invention shown in Figure 1A to Fig. 1 C are utilize the DC MOTOR CONTROL elevator door open/close.Shown in Figure 1A, the driving circuit of direct supply drive motor 20 usefulness that utilization is obtained after to source of AC 21 rectifications, by open the door driver element 10 and 11 and the

driver element

12 and 13 of closing the door form, need not to adopt any other mechanical switch contactless switch or like.Shown in the circuit, motor 20 is under the control of driver element 10 to 13, by the driver train on the direction or the direction of the closing the door control elevator door that opens the door.

Shown in Figure 1B, elevator door control circuit 22 is by MPU(A) 1, ROM2, RAM3, PTM4 and base drive circuit 5 form.Wherein, MPU(A) 1 by signal wire (SW) 23 receive from elevator control gear 9 comprise various signals such as elevator door control signal X101 and X102 so that the whole operation of control elevator door control circuit 22; Base drive circuit 5 is in order to produce signal OP1, OP2, CL1 and CL2, with the driver element 10 to 13 in control motor 20 driving circuits.Elevator door control circuit 22 also further comprise transmit microcomputer MPU(B) 6, it by conveyor line 24 send/receive to/from the signal of the inhibit signal of opening the door comprising of elevator control gear in the machine room 9.

Fig. 1 C shows the formation of car door driver train, and it utilizes the motor 20 via 22 controls of elevator door control circuit to drive the compartment.

The car door driver train is by the pulley 20a that rotates by motor 20, with the idler pulley 20b of pulley 20a pairing and go up the transmission belt 20d that is connected on the car door 20c in parallel around pulley 20a and 20b and form.

This embodiment of the present invention has such feature, promptly when transmitting microcomputer MPU(B) behind 6 prearranged signals (forbidding enabling signal) 8 that receive by conveyor line 24 from elevator control gear 9, be about to this signal and directly offer base drive circuit 5 in order to the control signal output of forbidding opening the door.

Fig. 2 represents the state of signal transmission/reception between elevator door control circuit 22 and elevator control gear 9.Hereinafter with reference to Fig. 2 the signal flow relevant with opening-closing door described.

By MPU(D) 26 produced in order to control the pass gate signal X101 and the enabling signal X102 of whole elevator, by connecting the signal wire (SW) 23 of the elevator door control circuit 22 that is provided with in the elevator control gear 9 that is provided with in the machine room and the compartment, directly offer elevator door control microcomputer MPU(A) 1.In addition; in Figure 1B, generally allow regional signal 102F with signal 8 represented elevator shutdown signal X10 and switch doors; only just allow to open elevator door during simultaneously for " height " when signal X10 and 102F level, when arbitrary level among signal X10 and the 102F is " low ", then forbid opening door.Signal X10 and 102F can be described as to open the door and allow the signal or the inhibit signal of opening the door.Signal 8 or signal X10 and 102F are by the signal transmission/reception microcomputer MPU(C in the elevator control gear 9) 25, the signal transmission/reception microcomputer MPU(B in the elevator door control circuit 22) 6 and conveyor line 24 offer elevator door control microcomputer MPU(A) 1 with base drive circuit 5.Base drive circuit 5 receives by elevator door control microcomputer MPU(A) 1 non-overlapped signal NLP and the pulse width signal PWM that produces, and these signals are amplified to can control open the door control element 10 and 11 and the level of close the door control element 12 and 13.Motor 20 is driven by above-mentioned these control elements, controls the ON/OFF of elevator door thus.

Fig. 3 describes base drive circuit 5 in detail.Introduce base drive circuit 5 in detail hereinafter with reference to Fig. 3.

Base drive circuit 5 by pulse width control circuit 31, non-overlapped circuit 32, watchdog circuit 33, resistor (R) 34, base drive device (BDC(A) to BDC(D)) 36 to 39, in order to drive base drive device BDC(A) 36 to BDC(D) 39 power supply (E) and a plurality of logic gates form.Wherein, a plurality of logic gates are according to BDC(A) 36 to BDC(D) 39 corresponding output signal, elevator shutdown signal X10 and opening-closing door allow regional signal 102F, produce in order to control BDC(A) 36 to BDC(D) 39 signal.

BDC(A) 36 and BDC(B) 37 respectively base drive signal OP1 and OP2 are offered open the door control element 10 and 11, and BDC(C) 38 and BDC(D) 39 respectively base drive signal CL1 and CL2 are offered close the door control element 12 and 13.According to offering BDC(A) 36 and BDC(B) the programmable timer pulse train of 37 respective end 2, BDC(A) 36 and BDC(B) 37 only offer BDC(A when " height " level signal) 36BDC(B) during 37 respective end 1, just produce signal OP1 and the OP2 that realizes on-off control, with driving open the door control element 10 and 11, motor 20 can be rotated by the direction of opening the door.

In the base drive circuit 5 with above-mentioned structure, the signal WDC of watchdog circuit 33 and the level of WDT are " low " when driving circuit 5 is normal condition, are when driving circuit 5 is error state " height ".If be error state when base drive circuit 5, during the respective electrical average out to " height " of signal WDC and WDT, MPU(A) 1 promptly stops output signal PWM because of signal WDC for " height " level.Correspondingly, the level of the signal PWS of pulse width control circuit 31 becomes " height ", and thus, the level of signal SVP becomes " low ", with the indication mal.In addition, non-overlapped circuit 32 makes the corresponding level of its output signal NLPO and NLPC be " low ".

Correspondingly, under base drive circuit 5 is unusual situation, offer BDC(A) 36 and BDC(B) 37 other respective end 2 signal BSO and offer BDC(C) 38 and BDC(D) the corresponding level of signal BSC of 39 other respective end 2 remains " height ", like this, BDC(A) 36 to BDC(D) 39 promptly stop the generation of its output signal, to stop elevator door control.

Below will introduce when watchdog circuit 33 indication base drive circuits 5 and be just often operation.

When elevator was stopped transport, the level of elevator stoppage in transit signal X10 became " low ", and when car position entered allow to open the door regional, opening the door allowed the level of regional signal 102F to become " height " then.These signals are by the MPU(C of elevator control gear 9) 25 pass through MPU(B) 6 offer MPU(A) 1.In this case, MPU(A) 1 can produce an instruction, make pwm signal be used to the direction of opening the door.This pwm signal is exported as signal PWS by pulse width control circuit 31.Correspondingly, signal PWS makes the base drive device BDC(A that opens the door by logic gates) 36 and BDC(B) signal BSO on 37 input ends 2 becomes pulse-width control signal.So, the base drive of opening the door device BDC(A) 36 and BDC(B) 37 finish the control of opening the door.

Yet, inhibit signal 8 produces if open the door, if the level of i.e. elevator stoppage in transit signal X10 becomes " height ", or the level that allows regional signal 102F of opening the door is when becoming " low ", in order to produce the microcomputer MPU(A of pwm signal) 1 promptly be under an embargo and produce the pwm signal that is used to open the door.In addition, in base drive circuit 5, be " low ", base drive device BDC(A) so each opens the door because the level of signal X10 is the level of " height " or signal 102F 36 and BDC(B) level of signal BSD of 37 input ends 1 becomes " low ".As a result, forbid the base drive device BDC(A that opens the door) 36 and BDC(B) 37 conditions of opening the door control promptly accomplish upright, like this, the base drive of opening the door device BDC(A) 36 and BDC(B) 37 can not export and control the signal that elevator door opens the door.Therefore, because the generation of inhibit signal 8 of opening the door, MPU(A takes place by the PWM figure in pulse output) 1 and base drive circuit 5 forbid in pairs.

Because one embodiment of the present of invention have above-mentioned this structure, the level of signal BSD can not be " height ", so base drive device BDC(A that opens the door) 36 and BDC(B) 37 can not export and control the signal that opens the door and move, even MPU(A) 1 does not stop or the compartment is positioned at and produces the instruction of opening the door mistakenly when allowing beyond the zone of opening the door yet at elevator, elevator door also will never be opened.

Although signal X10 and 102F are by the MPU(D of elevator control gear 9) 26 by signal transmission/reception MPU(C) 25 and MPU(B) 6 offer elevator door control circuit 22, but reliability in order to ensure signal, the state of received signal still needs by signal transmissions/reception MPU(B) 6 and MPU(C) 25 feed back to elevator and control MPU(D) 26 so that at MPU(D) verification in 26.

As mentioned above, according to one embodiment of present invention, owing to will offer elevator door control microcomputer and base drive device in order to forbid the signal that elevator door opens the door, so under the situation that elevator door should not be opened, really can forbid the operation of base drive device.Like this,, also can prevent to open elevator door reliably, thereby obtain a kind of safe control device for elevator door even strange phenomena occurs in any position.

Fig. 4 A to 4C is the block scheme of expression another embodiment of the present invention complete structure.Fig. 5 is the block scheme of a base drive circuit structure in the expression another embodiment of the present invention.An alternative embodiment of the invention is as the motor that drives elevator door, and by the example of inverter controlling induction motor with induction motor.In Fig. 4 A to 4C and Fig. 5, reference number 40 expression three-phase base drive circuits, 41 to 46 expression driver elements, 47 to 52 represent to be connected to by inverse parallel the diode of driver element 41 to 46 respectively, 60 expression three-phase induction motors, 61 expression pulse width control circuits, the non-overlapped circuit of 62 expressions, 63 to 68 expression base drive devices.Fig. 4 A to 4C then represents and identical part shown in Figure 1A to 1C and Fig. 2, Fig. 3 with other reference number among Fig. 5.

In an alternative embodiment of the invention shown in Fig. 4 A and 4B, driver element 41 to 46 constitutes a pulse width modulation phase inverter, like this, driver element 41 to 46 is controlled and on/off according to the pwm signal of gained on its corresponding base stage, the direct current (DC) that will be connected across thus on P and the N two ends is converted to three plase alternating current, to drive induction motor 60 runnings.Three-phase base drive circuit 40 produces the signal B that is respectively applied for the control of driver element 41 to 46 on/off ₁To B ₆Another illustrated embodiment of the present invention is a kind of control system with following mechanism, be that opening-closing door control only is in shut down condition and is positioned under the area condition that allows to open the door just possible at elevator, and under another kind of condition, will produce braking force, make elevator door mechanically be difficult for opening.

Above-mentioned driver element 41 to 46 can adopt such as igbt, MOS field effect transister, bipolar transistor or like, and these elements are controlled with the frequency switching that is higher than audio frequency range.

Fig. 4 C represents an example in order to realize the mechanism of car door driving mechanism, and it drives elevator door by mechanical force of motor 60 usefulness under the control of elevator door control circuit.

In the car door driver train, car door 20C is through pulley 60a, 60b and 60c and chain 60e, by the rotational force driving ON/OFF of induction motor 60.Some A among the figure and B are the fulcrum that is separately fixed on a 20c and the building wall.Because pulley 60c rotates, so chain 60e circulation is mobile, thus along guide rail 60f parallel motion car door 20c.

Fig. 4 C represents that car door 20c is in the state when closing.In this state, the foundary weight 60d that is suspended on the pulley 60c offers car door 20c by foundary weight itself with the power on the direction of closing the door.

According to the detailed description of Fig. 5, pulse width control circuit 61 and non-overlapped circuit 62 are pressed the configuration of three phase circuit usage, and six pairs of base drive devices dispose by controlling three-phase inverter.Although base drive circuit 40 is different from the base drive circuit described in Fig. 3 in this, other structure of base drive circuit 40 is identical with situation among Fig. 3 basically.

In Fig. 5, based on MPU(A) 1 signal that is produced, pulse width control circuit 61 produces three-phase pulse width signal PWU, PWV and PWW; Non-overlapped circuit 62 produces the non-overlapped signal NLPu1 of three-phase, NLPu2, NLPv1, NLPv2, NLPw1 and NLPw2.

When base drive circuit 40 for just often, be " low " by signal WDC that watchdog circuit 33 produced and the corresponding level of WDT.When " low " level signal is produced by pulse width control circuit 61, as its pulsewidth during corresponding to signal PWU, the PWV of respective phase and PWW, promptly become respectively the inversion signal that has same pulse width with signal PWU, PWV and PWW through signal PWu, the PWv of gate circuit and PWw, because the level of signal WDT is " low ", so they have " height " level respectively.

On the other hand, according to respective phase, non-overlapped circuit 62 makes the corresponding level of signal NLPu1, NLPu2, NLPv1, NLPv2, NLPw1 and NLPw2 be " height ", to guarantee that the non-overlapped time is between the height two ends of phase inverter.Thereby, offer base drive device BDC(A) 63 to BDC(F) the corresponding level of the signal BS1 to BS6 of 68 respective inputs 2 also is " height " thereupon, so just produced three-phase alternating current.

In addition, be in shut down condition and be positioned under the regional situation that allows to open the door at elevator, the level of elevator stoppage in transit signal X10 is " low ", and the level that allows regional signal that opens the door is " height ".As a result, base drive device BDC(A) 63 to BDC(F) level of signal BSD on 68 respective inputs is " height ".Like this, base drive device BDC(A) 63 to BDC(F) 68 can produce output signal B in succession ₁To B ₆Output signal B ₁To B ₆The on/off of controlling and driving element 41 to 46 is so three-phase output voltage is provided for induction motor 60, with the running of control induction motor 60.

According to another embodiment of the invention, even no matter enabling signal is the existence of the inhibit signal of opening the door, be that elevator is not in shut down condition or compartment and is not positioned at and allows the area condition of opening the door and the words that still produce, offer base drive device BDC(A) 63 to BDC(F) level of the signal BSD of 68 respective inputs 1 also is " low ", so base drive device BDC(A) 63 to BDC(F) 68 can not produce output signal B respectively ₁To B ₆As a result, three-phase output voltage remains on zero, so induction motor 60 does not turn round, elevator door is not opened.Like this, control signal generation microcomputer 1 and base drive circuit 40 be by the inhibit signal 8 of opening the door, dual execution quiescing.

As mentioned above, according to these two embodiment of the present invention, a kind of safe control device for elevator door can be provided, in this device, indication forbids that predetermined state signal that elevator opens the door is provided for the elevator door control microcomputer and in order to the base drive circuit of controlling and driving element, with the dual opening door operation of forbidding.Like this, just can not be in shut down condition, compartment and be not positioned under the situation that allows the zone of opening the door or Lift out of order, prevent to open elevator door at elevator.

As mentioned above, according to the present invention, by a kind of simple and easy and height failure-free structure, by offering elevator door control microcomputer and one by computer-controlled elevator door circuit for controlling motor in order to forbid signal that elevator opens the door, the safety aspect that can be desirably in control device for elevator door makes moderate progress.

Claims

1. An elevator device, comprising:

A motor for driving elevator doors; characterized in that it also includes:

semiconductor control elements for controlling power supplied to said motor;

According to the door opening/closing command issued by the elevator control equipment, it is used to generate a control signal and provide it to the driving circuit of the semiconductor control element; and

A device that prevents a control signal for opening the elevator door from being supplied by the drive circuit to the semiconductor control element in accordance with a predetermined signal supplied from the elevator control device.

2. An elevator device, comprising:

A motor for driving elevator doors; characterized in that it also includes:

semiconductor control elements for controlling the power supplied to said motor;

A pattern generating device for generating an on-off pattern for the semiconductor control element according to the door opening/closing command issued by the elevator control device;

a driving circuit that receives the on-off pattern and generates a control signal for the semiconductor control element; and

According to the predetermined signal provided by the elevator control device, it is used to prevent the corresponding output of the pattern generating device and the driving circuit.

3. An elevator device, comprising:

A motor for driving elevator doors; characterized in that it also includes:

Semiconductor control elements connected between a DC power source and said motor without intervening any mechanized circuit on/off device for controlling the power supplied to said motor;

a drive circuit receiving the on-off pattern and generating a control signal for the semiconductor control element;

A device for preventing corresponding output of the on-off pattern for opening the elevator door and the control signal in accordance with a predetermined signal provided by the elevator control device for prohibiting the opening of the elevator door.

4. An elevator device, comprising:

The motor for driving the elevator door is characterized in that it also includes:

an on/off control element for driving said motor;

a driving circuit for driving the on/off control element;

providing a command for opening/closing the elevator door to the microcomputer of the driving circuit; and

providing an elevator control device to said microcomputer with an instruction for opening/closing said elevator door;

The opening/closing control element includes a door opening drive element for driving the elevator door in a door opening direction and a door closing drive element for driving the elevator door in a door closing direction; and

Said microcomputer and said drive circuit respectively comprise, according to the predetermined signal respectively provided by said elevator control equipment to said microcomputer and said driving device, prevent it from outputting correspondingly in the direction of door opening.

5. The elevator apparatus of claim 4, further comprising means for causing said door closing drive member to continuously control said DC motor when said elevator doors are in a fully closed position.

6. An elevator device, characterized in that it comprises:

Induction motors for driving elevator doors;

The semiconductor control element used to control the power supply to the motor, the semiconductor control element constitutes an inverter; it is used to generate a control signal for the drive of the semiconductor control element according to the door opening/closing command issued by the elevator control equipment circuits; and

means for preventing said control signal from being supplied by said drive circuit to said semiconductor control element in accordance with a predetermined signal from said elevator control apparatus.

7. An elevator device, characterized by comprising:

Induction motors for driving elevator doors;

semiconductor control elements for controlling the power supply to said motor, said semiconductor control elements constituting an inverter;

According to the door opening/closing command issued by the elevator control equipment, a control signal is generated and provided to the driving circuit of the semiconductor control element;

When the elevator door is in a fully closed state, in addition to the induction motor, add a door opening force device; and

A device that prevents said control signal from being supplied by said drive circuit to said semiconductor control element in accordance with a predetermined signal provided by said elevator control device.

8. An elevator device, comprising:

A motor for driving elevator doors; characterized in that it also includes:

a power converter for controlling power supplied to said motor;

A device that controls the power converter according to the door opening/closing command, so as to drive the motor according to the forward/backward direction;

a transmission microcomputer installed on the car for sending/receiving signals to/from the elevator control device installed in the machine room; and

Means for preventing operation of said converter control device in accordance with a predetermined signal received by said transmitting microcomputer.

9. An elevator device comprising;

A motor for driving elevator doors; characterized in that it also includes:

a power converter mounted on the car to control the power supplied to said motor, said power converter being arranged to connect said car-mounted power source to said motor without plugging any other mechanical circuit breaker /close device;

According to the instruction of opening/closing the door, control the device of the power converter to drive the motor;

Transmitting equipment installed on said car for transmitting/receiving signals to/from elevator control devices installed in the machine room; and

means for deactivating said converter control means in response to a predetermined signal from said transmitted signal.

10. A main circuit device for driving elevator doors, comprising:

The motor used to drive the elevator door; it is characterized in that it also includes a semiconductor power converter connected between the motor and the power input without any other mechanical circuit opening/closing devices.

11. An elevator device, comprising:

A motor for driving elevator doors; characterized in that it also includes:

a power converter for controlling power supplied to said motor;

A converter control device for controlling the power converter to drive the motor according to the door opening/closing command;

The first sending device through which the elevator control device arranged in the machine room sends the door opening/closing command;

a second transmission device disposed between the car and said elevator control device in said machine room; and

According to the predetermined signal provided by the second signal sending device, it is used to prohibit at least one device outputting in the door opening direction of the converter control device.