JPH07108753B2 - Elevator door control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Use) The present invention relates to an elevator door control device for controlling an elevator door (also referred to as a door in this specification) according to a predetermined speed pattern. .

(Prior Art) FIGS. 5 and 6 show the configuration of a conventional elevator door control device together with a general elevator door opening / closing mechanism. In these figures, when the output signal 1a of the pattern generating circuit 1 is applied to the electric motor control circuit 2, the electric motor control circuit 2 drives and controls the door driving electric motor 3. In this case, the pattern generation circuit 1 operates according to the opening / closing command from the driving operation circuit 4, and the electric motor 3 opens / closes the car door panel (referred to as car door in the present invention) 8 via the speed reducer 5, the lever 6 and the door link 7. In addition, the engaging device 9 provided on the car door panel 8 and the engaging plate 10 provided on the hold door panel (referred to as “hold door” in the present invention) 11 integrally open and close the hold door panel 11 in the engaged state. To do. The door panel position detection circuit 12 generates a door panel position signal 12a and applies it to the pattern generation circuit 1, and feedforward control is performed by a series of detection operations.

FIG. 7 shows the details of the engagement device 9. The movable engagement roller 13 provided on the car door panel 8 while the car is running.
The fixed engagement roller 13b and the fixed engagement roller 13b are in an open state so that they do not come into contact with the engagement plate 10 fixed to the hold door panel 11. When the car stops, the main link 7a and the cam link 7b are swung by the rotational force of the electric motor 3, and the roller 16 attached to the intermediate portion of the lever 15 whose one end is tiltably supported by the shaft 14 is pushed. Become.
As a result, the movable engagement roller provided at the other end of the lever 14
13a is moved in the direction of the arrow to engage the engaging plate 10b with the fixed engaging roller 13b attached to the hold-back panel 11.
Hold a panel 11 of the car door panel 8 while holding
Open and close together.

By the way, in the door closing operation of the above-mentioned opening / closing operations, when the door is slightly before the door is fully closed, the movement of the cam link 7 and the pulling force of the tension spring 21 provided between the lever 15 and the car door panel 8 cause , Movable engagement roller 13
a is separated from the engaging plate 10, and the engaged state between the car door panel 8 and the hold door panel 11 is released. After that, the car door panel 8 completes the door closing by the rotating force of the electric motor 3. And the limit switch is used to fully close the car door panel 8.
Confirmed by GLSC. On the other hand, the hold door panel 11 completes the door closing by its own inertial force and the door closing force of the door closer 17. The interlock switch GLSH confirms that the hold door panel 11 is fully closed.

By the way, in the door closing operation among the opening and closing operations of the elevator doors described above, there is a possibility that the threshold is clogged with foreign matter, the wind pressure is likely to occur in a high-rise building, or the door safety device does not operate at a position where baggage or The door may not be completely closed when a passenger is pinched.

As a solution to this, for example, Japanese Patent Laid-Open No. 57-42486
There is an elevator door control device shown in the publication. When both the car door and the hold door are not fully closed within a predetermined time when the door is closed, the closing operation is performed again after restarting them. In that case, the door closing speed increasing circuit shown in FIG. By 20, for example, the door closing speed near the closed end of the door is increased by the procedure shown in the flowchart of FIG.

(Problems to be Solved by the Invention) Although the conventional elevator door control device described above is certainly effective against external factors such as wind pressure and foreign matter on the door rail, the number of times the door closing speed is increased increases. There was a problem that it was too much.

Further, when a passenger or luggage is caught in the door, the door may be closed in a collision state, which may damage the luggage or the door.
That is, if the human body is pinched and the door does not close completely,
During the restart operation, a person may leave the doorway and may increase the door speed near the closed end of the door, despite the fact that the factor that obstructs the door was actually removed. Will close in a collision.
As a result, not only is the door closed smoothly, but noise is also generated. On the other hand, if the luggage is sandwiched between the doors and the door speed is increased, the impact at the time of the collision may damage the luggage or the door.

The present invention has been made to solve the above problems, and can reduce the number of times the door closing speed is increased with respect to external factors,
An object of the present invention is to provide an elevator door control device that can safely and smoothly perform a door closing operation when a human body, luggage, etc. are caught.

[Structure of Invention]

(Means for Solving Problems) The present invention relates to a pattern generating means for generating a speed pattern corresponding to an opening / closing position of an elevator door, and the speed so that the door closing speed near the closed end of the door is increased. A speed increasing means for correcting the pattern, an electric motor controlling means for controlling the electric motor for driving the door in accordance with the speed pattern of the pattern generating means, and a first detecting the fully closed hold-up
Door closing detecting means and second door closing detecting means for detecting a fully closed state of the car door, and closing operation of the door in which the speed pattern uncorrected by giving a door closing command is added to the electric motor control means. However, when the second door closing detecting means does not detect the full closing of the car door, the door is restarted to perform the door closing operation again, and when the predetermined time elapses, the second door closing detecting means causes the car door door to close. Detecting the full closure of the
When the door closing detection means does not detect the full closing of the hold door, the door is restarted, and the corrected speed pattern is added to the electric motor control means to close the door. It is characterized by that.

(Operation) When the state where the car door panel cannot be closed due to external factors such as wind pressure applied to the car door panel and foreign matter on the door rail is checked, the car door panel is completely closed but the hold door panel is not completely closed. In most cases. This is probably due to the following reasons. That is, when the car door panel and the hold door panel are in the engaged state, the door closing force of the electric motor applied to the hold door panel is sufficiently larger than the door closing force due to an external factor, but is released from the engaged state near the door closing end. The door closing force of the held door panel is only the inertial force of itself and the door closing force of the door closer of about 3 kg, and this alone can not resist the door closing force due to external factors, thereby completely closing the car door. However, it is concluded that Holdor cannot be fully closed.

On the other hand, if you are unable to close the door due to a human body or luggage being caught, the hold door and car door are in the engaged state,
Often both are not completely closed. Actually, the situation where only the hold door panel cannot be fully closed is limited to the case where an obstacle is sandwiched between about 30 mm which is released from the engaged state, and such a case is rare. is there.

Therefore, in the present invention, the speed pattern of the pattern generating means can be corrected by the speed increasing means so that the door closing speed near the closed end of the door is increased, while the full closing of the hold door is performed by the first door. The second door closing detecting means first detects the fully closed state of the car door by the second door closing detecting means, and the driving operation means first closes the door according to the uncorrected speed pattern. When it is not detected that the door is closed, the door is restarted and the door is closed anew to make the door operate safely and smoothly. When the predetermined time has elapsed, the second door-closing detecting means detects that the car door is fully opened. Further, only when the first door closing detecting means does not detect the full closing of the hold door, after the door is restarted, the door is closed according to the corrected speed pattern to reduce the number of times of closing the door.

(Embodiment) FIG. 1 and FIG. 2 are circuit diagrams showing a configuration of an embodiment of the present invention. In particular, an operation control circuit as a driving operation means referred to in the present invention (the fifth embodiment shown as a conventional device). (Corresponding to the driving operation circuit 4 in the figure) is the hold door interlock switch GLS as the first and second door closing detecting means in the present invention.
FIG. 3 is a circuit diagram showing a combination of H, a car door closing confirmation limit switch GLSC and a door closing speed increasing circuit 20 as a speed increasing means also referred to in the present invention. The pattern generation means referred to in the present invention corresponds to the pattern generation circuit 1 shown in FIG. 5 as a conventional device, and the motor control means referred to in the present invention is the motor control shown in FIG. 5 shown as a conventional device. The circuit corresponds to the circuit 1, and all of them are publicly known, so that detailed description thereof will be omitted.

In FIG. 1, a door opening / closing relay DT, a door timer XDT,
Door opening relay OP, door closing relay CL, door closing abnormality detection timer CLST, door closing abnormality detection relay CLS, door closing completion detection relay CE, card door closing confirmation relay CEX, door closing auxiliary relay RCLX, and door reclosing auxiliary relay The RCL is connected between a pair of DC control power supply buses PC1 and NC so that it can be excited (hereinafter, also referred to as "excitation"). Of these, the door opening / closing relay DT is not shown in the drawings
The make contact DOa of the DO is connected in series, and the make contact CLSb of the door closing abnormality detection relay CLS, the door close push button switch (break contact) PDC, and the make contact of the off-delay type door timer XDT are connected to this make contact DOa.
XDTa and the series connection circuit of make contact DTa of door opening / closing relay DT are connected in parallel. The door timer XDT is connected in series with a door open confirmation limit switch 18CS that opens when the door is fully opened and a make contact DTj of the door opening / closing relay DT. A door zone detection limit switch RCC, a make contact DTb of the door opening / closing relay DT, and a break contact CLa of the door closing relay CL are connected in series to the door opening relay OP. A break contact DTc of the door opening / closing relay DT and a break contact OPa of the door opening relay OP are connected in series to the door closing relay CL. The door closing error detection timer CLST has a make contact CL of the door closing relay CL.
b, and the break contact CEa of the door close completion detection relay CE
Are connected in series. Door closing error detection relay CLS
Is connected in series with the make contact CLSTa of the door closing abnormality detection timer CLST, and the series circuit is connected to the door closing detection timer CLST.
Connected in parallel to ST. The door closing completion detection relay CE is connected in series with a car door closing confirmation limit switch GLSC serving as a second door closing detecting means and a hold door interlock switch GLSH serving as a first door closing detecting means. CEX has its own make contact CEX
a, Door break completion detection relay CE break contact CEc is connected in series, and the card door close confirmation limit switch
The junction of the GLSC and the hold door interlock switch GLSH is connected to the junction of the make contact CEXa and the break contact CEc. The make contact CLSa of the door close abnormality detection relay CLS and the break contact CEb of the door close completion detection relay CE are connected in series to the door close auxiliary relay RCLX.
In addition, the break contact CLSa has a door closing auxiliary relay RCLX.
Make contacts RCLXa are connected in parallel. Door reclosing auxiliary relay RCL includes make contact CLc of door closing relay CL,
A make contact RCLXb of its own, a make contact CEXb of a car door closing confirmation relay CEX, and a resistor R are connected in series, and a capacitor C is connected in parallel to the door reclosing auxiliary relay.

Here, the resistor R and the capacitor C are provided to slightly delay the operation of the door reclosing auxiliary relay RCL so that the door reclosing auxiliary relay functions as an on-delay timer relay. The setting time limit of the door closing abnormality detection timer CLST is set to an appropriate value longer than the time required for normal door closing.

Next, the door opening / closing pattern control circuit shown in FIG. 2 has a door opening deceleration relay X between the DC control power bus PC1 and NC.
The OPS, door closing deceleration relay XCLS, deceleration pattern generation relays OS1, OS2, OS3, R1, R2, R3, and pattern switching relay CP are operably connected. Of these, the door opening deceleration relay XOPS has a cam switch 11CS and a make contact DTd of a door opening / closing relay DT that is excited when the door is opened.
Are connected in series. The deceleration relay XCLS has the cam switch 12CS and the break contact of the door opening / closing relay DT.
DTe are connected in series. Deceleration pattern generation relay O
S1 has deceleration relays XOPS and XCLS make contacts XOPS
Parallel circuit of a and XCLSa and deceleration pattern generation relay OS
The second break contact OS2a is connected in series, and the deceleration pattern generation relay OS3 break contact OS3 is connected to the contact OS2a.
The series connection circuit of a and the diode D1 is connected in parallel. This deceleration pattern generation relay OS2 has contact O
The connection point between S3a and the diode D1 is connected via the diode D2, and the cam switch 13CS is connected so as to form a parallel excitation shunt. A cam switch 14CS is connected in series to the deceleration pattern generation relay OS3.
The pattern switching relay CP is connected in series with the make contact DTf of the door opening / closing relay DT and the break contact XCLSc of the deceleration relay XOPS.In addition, the break contact DTg of the door opening / closing relay DT is connected to both contacts DTf and XOPSc. The series connection circuit with the deceleration relay XCLS is connected in parallel. Of the deceleration pattern generation relays R1, R2, and R3 that form the door closing speed increase circuit 20, the deceleration pattern generation relay R1 has a make contact XOPSb of the door opening / closing deceleration relay XOPS and a make of the door closing deceleration relay XCLS. The parallel connection circuit of the contacts XCLSb and the make contact OS1a of the deceleration pattern generation relay OS1 are connected in series. The contact OS1a has a door opening / closing relay DT.
Break contact DTh, door reclosing auxiliary relay RCL make contact RCLa, deceleration pattern generation relay OS2 break contact OS2
The series connection circuit of c is connected in parallel. The deceleration pattern generation relay R2 is connected to the mutual junction point of the contact RCLa and the contact OS2c via the break contact OS3c of the deceleration pattern generation relay OS3, and further, the make contact DT of the door opening / closing relay DT.
i, via the series connection circuit of the break contact OS2b of the deceleration pattern generation relay OS2, it is connected to the mutual junction of the contacts XCLSb, DTh. The deceleration pattern generation relay R3 is the break contact RCLb of the door reclosing auxiliary relay, the deceleration pattern generation relay
OS3 break contact OS3b via the series connection circuit XCL contact
It is connected to the mutual junction of Sb and DTh, and the contact R
The junction of CLb and OS3 and the junction of contacts DTi and OS2b are connected to each other.

The operation of this embodiment configured as described above will be described below.

In the circuit shown in FIG. 1, first, if the tor closing command is issued, the contact DOa remains open at this time, so the door opening / closing relay DT is in the deenergized state. Therefore, since the contact DTc is closed, the door closing relay CL operates. As a result, a close pattern generation command is given to the pattern generation circuit 1 of FIG. 5, and at the same time, the contact CLb is closed to start the door closing abnormality detection timer CLST. If there is no abnormality in the door closing operation, the limit switch GL
When both the SC and interlock switch GLSH are closed, the door close completion detection relay CE operates and opens the contact CEa, so the timer CLST does not operate. This timer CL
The ST operates only when the door is not completely closed within the set time for some reason, in other words, when the limit switch GLSC that confirms the closing of the car door is not closed, and the door is closed. The occurrence of an abnormality is detected by exciting the door closing abnormality detection relay CLS via the contact CLSTa.

When this relay CLS operates, the contact CLSb is closed to operate the door opening / closing relay DT. Therefore, the contact DTb is closed to operate the door opening relay OP, and an open pattern generation command is given to the pattern generation circuit 1 to perform the restart operation. When the relay CLS operates, the door closing auxiliary relay RCLX is excited via the contact CLSa.
Self-hold via RCXLa and prepare for door closing operation after restart.

Next, after a predetermined time has passed, the door closing abnormality detection timer
At the time of CLST operation, the card limit switch GLSC closes and the hold door interlock switch GLSH
If is not closed, the CARD door close confirmation relay CEX
Is excited and self-holds via the contact CEXa. On the other hand, when the relay CEX is energized, the contact CEXb is closed, and when the relay RCLX is excited, the contact RCXb is closed, and the door closing relay CL is not in the deenergized state. If the RCL is a transient type, the contact CL
The door reclosing auxiliary relay RCL may be excited via c, RCLXb and CEXb, but since the on-delay characteristic is given by the resistor R and the capacitor C, this relay is excited when the restart operation is started. There is no such thing. When the door restart operation is completed and the door open confirmation limit switch 18CS is closed, the contact XDTa is opened after a predetermined time period and the door opening / closing relay DT is deenergized. When the door opening / closing relay DT is deenergized, the door closing relay CL is excited again via the contact DTc, and the door closing operation starts. At the same time, the contact CLc is closed and the door reclosing auxiliary relay RCL operates with some on-delay time limit. When the door reclosing auxiliary relay RCL operates, the door closing deceleration pattern up circuit 20 described later operates to increase the door speed near the door closing end.
Therefore, the inertial force of the hold door panel 11 after being released from the engaged state is increased, and the door closing impossible state due to the influence of wind pressure or the like due to the increase of the door closing force can be eliminated.

Next, the circuit shown in FIG. 2 will be described with reference to FIG. Doors are normally opened and closed in a similar pattern in both the opening direction and the closing direction, but the closing operation will be described as an example.

The door closing operation is started on condition that the cam switch 11CS that opens and closes according to the opening and closing position of the door is closed, but at this time, the door opening and closing relay DT is in the deenergized state, and the cam switch 12CS is Double deceleration relay XO up to the point where it closes
Neither PS nor XCLS is excited. Therefore, the contacts DTg and XCLS
The pattern switching relay CP is excited via c, and the speed of the electric motor 3 is controlled based on the output of the pattern generating circuit (see FIG. 5) 1. When the door is closed and the cam switch 12CS is closed at point S3 in Fig. 3, the deceleration relay XCLS is excited. Then, the contact XCLSc is opened, and the pattern switching relay CP is de-energized. At this time, since both cam switches 13CS and 14CS are also closed, both deceleration pattern generation relays OS2 and OS3 are excited. Therefore, the deceleration pattern generation relay OS1 is not excited. Thus
The deceleration pattern generation relay R1 is excited via the contact XCLSb, OS1a, and the deceleration pattern output is lowered by one step.

Further, when the door is closed and the cam switch 13CS is opened at point S2 in FIG. 3, the deceleration pattern generation relay OS2 is deenergized. As a result, the contact OS2a is returned to the closed state to excite the deceleration pattern generation relay OS1. In this way, when the contact OS2b is closed, the deceleration pattern generation relay R2 is excited, and the deceleration pattern output is lowered by one step as shown by the broken line.

When the door is closed again, the cam switch 14 is pressed at point S1 in Fig. 3.
When CS opens, the deceleration pattern generation relay OS3 is de-energized. Therefore, the contacts OS3a and OS3b both return to the closed state, on the one hand the deceleration pattern generation relay OS1 is energized while the deceleration pattern generation relay OS1 remains energized, and on the other hand the deceleration pattern generation relays R1 and R2 are de-energized. At the same time, the relay R3 is excited. As a result, the deceleration pattern output is lowered by another step as indicated by the broken line.

Next, when the door reclosing auxiliary relay RCL is excited due to external factors such as wind pressure applied to the door and foreign matter, the door reclosing auxiliary relay RCL is excited, and the cam switch 13 is connected through the path of the contacts DTh, RCLa and OS2c.
Relay R1 continues to be excited even in the zone where CS is closed, and the third
As shown by the solid line in the figure, the pattern levels up to that point are retained as they are. In this way, the torque is increased, and the door closes while coping with the load.

FIG. 4 is a flow chart for explaining the operation of the driving operation circuit. When a door closing command is issued in step 201, the door closing operation is started in step 202, and within a predetermined time in step 203. Determine if the door is fully closed. If the door is fully closed, step 204
To start the elevator operation. If the door is not fully closed, it is determined in step 205 whether or not the car door is fully closed. Here, if the car door is not fully closed, after the door reopening operation is performed in step 206, the process returns to step 201 and the door closing operation is repeated. If the car door is fully closed as determined in step 205, the door restart operation is performed in step 207 as well.
After the door closing speed increasing circuit 20 is operated in step 208, the process returns to step 201 and the door closing operation is repeated.

Thus, according to the above-described embodiment, when the car door is not fully closed, the door is restarted to perform the door closing operation again, and when the car door is fully closed after the elapse of a predetermined time and the hold door is not fully closed, the door is closed. And the door closing operation is surely performed by the corrected speed pattern.

As a result, after the human body is caught in the door and cannot be closed, the door closing operation can be completed smoothly and quietly even if the human body leaves the traveling path of the door while the door is being restarted. Since the impact at the time of reclosing does not increase even if the luggage or the like is sandwiched between the doors, it is possible to prevent the luggage and the door from being damaged. Furthermore, since the pattern of the door closing speed is limited only when the car door is fully closed and the hold door is not fully closed, the number of times can be greatly reduced.

In the above embodiment, the door control device that controls the opening and closing of the elevator door according to the planned opening and closing pattern is described, but the technique of increasing the door closing speed only when the car door is fully closed, and the hold door is not fully closed, It can also be applied to a resistance control type door control device that controls rotation of an electric motor by switching resistance values.

〔The invention's effect〕

As is clear from the above description, according to the present invention,
The number of times the door closing speed is increased in response to external factors such as wind pressure can be markedly reduced, and a safe and smooth door closing operation can be performed when a human body, luggage, or the like is caught.

[Brief description of drawings]

1 and 2 are circuit diagrams showing the configuration of the main elements of an embodiment of the present invention, and FIG. 3 is a line showing the relationship between the door opening / closing position and speed for explaining the operation of the embodiment. FIG. 4 and FIG. 4 are flow charts for explaining the operation of the embodiment, and FIG.
FIG. 6, FIG. 6 and FIG. 7 are diagrams showing a schematic configuration of a conventional elevator door control device together with a general elevator door opening / closing mechanism, and FIG. 8 is a flow chart for explaining the operation of this device. is there. 1 ... Pattern generation circuit, 2 ... motor control circuit, 3 ... door drive motor, 4 ... driving operation circuit, 8 ...
Car door panel, 11 …… Hold door panel, 20 …… Door closing speed increase circuit.

Claims (1)

[Claims] 1. A pattern generating means for generating a speed pattern corresponding to an opening / closing position of an elevator door, and a speed increasing means for correcting the speed pattern so that a door closing speed near a closing end of the door is increased. An electric motor control means for controlling the electric motor for driving the door in accordance with the speed pattern of the pattern generating means, a first door closing detection means for detecting the fully closed state of the hold door, and a second for detecting the fully closed state of the car door.
And the door closing detection means for closing the door by adding the uncorrected speed pattern to the electric motor control means when a door closing command is given, and the second door closing detection means causes all of the car doors to be closed. When it is not detected that the door is closed, the door is restarted and the door is closed again. When a predetermined time elapses, the second door closing detection means detects that the car door is fully closed, and the first door is closed. When the detection means does not detect that the hold door is fully closed, the door is restarted, and the corrected speed pattern is added to the electric motor control means to close the door. Characteristic elevator door control device.