JPH05162957A - Door controller for elevator - Google Patents

Abstract

PURPOSE:To improve the safety of a door by preventing the engagement element of a door and an engaging roller from being released by installing a means for detecting the stop of a cage and allowing the door to be opened when the cage is set within a door zone range and the detecting means operates. CONSTITUTION:A detecting means for detecting the stop of a cage 1, i.e., speed detector 20 and a means for opening a door according to the operation of the detecting means, i.e., contact point DZ, contact point 23b, and a relay 37 are installed. During the traveling of the cage 1, an output is generated on the speed detector 20, and a relay 23 is energized, and since the contact point 23b is in opened state, the relay 37 for applying an opening instruction to the cage door is made independent. When the cage 1 stops in the door zone range, the contact point DZ and the contact point 23b are in closed state, and the relay is energized by a circuit P-34b-DZ-36b-OLS-37-N, and a door motor 35 is driven by a circuit P-37a-35-37a-N, and when the cage door 5 is opened, also the getting-on field door can be opened simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door control device.

[0002]

2. Description of the Related Art Generally, an elevator is provided with an engaging roller on a car door and an engaging member on a landing door, as disclosed in, for example, Japanese Utility Model Laid-Open No. 53-9673. When it enters the range, the door motor provided on the upper part of the car is driven, and when the car door is opened, the engagement roller and the engagement element are engaged, and the hall door is also opened in synchronization with the car door.

By the way, when a passenger in the car opens the car door for some mischief while the car is traveling, the car suddenly stops. At that time, if the car happens to stop in the door zone during deceleration, the engagement roller and the engagement element sometimes come off. , The landing door may remain closed and only the car door may open. Therefore, even if the car door is to be closed, the engagement roller of the car door is obstructed by the engaging member of the hall door so that the car door cannot be completely closed. Therefore, there is a problem that the car cannot be activated.

Therefore, for example, Japanese Utility Model Laid-Open No. 62-98679.
According to Japanese Patent Publication No. 52-60, the engaging roller is also disclosed.
According to Japanese Patent Laid-Open No. 073, there is proposed a device in which the engaging element is tilted toward the closed end side of the door and the engaging roller easily engages with the engaging element. Then, the maintenance engineer rushes to the site and restores the elevator so that the engagement roller and the engagement element engage with each other.

[0005]

In the above-mentioned conventional apparatus, since the engaging roller or the engaging element can be tilted, the mechanism is complicated and the cost is high. Further, there is a problem that the elevator becomes inoperative until the maintenance engineer arrives at the site and recovers so that the engagement roller and the engagement element are engaged with each other, so that the service cannot be provided to the user.

In view of the above-mentioned drawbacks, the present invention is to provide an elevator door control device which does not cause disengagement of the engaging element even if the car suddenly stops for some reason.

[0007]

The object of the present invention is to provide an elevator door control device for engaging and closing a car door and a landing door by driving a door motor when the elevator car is within a predetermined door zone range. This can be achieved by providing detection means for detecting that the car has stopped and means for opening the door in response to the operation of the detection means.

[0008]

According to the present invention, for example, even if a passenger in a car forcibly opens the car door to enter the range of the door zone and the engagement roller and the engagement element engage with each other, the car is completely stopped. After the detection, the door motor is driven and the car door is opened, so that the engaging element and the engagement roller are reliably engaged, and the car door and the hall door are opened in synchronization.

Therefore, when a call is made, the door is closed again, the vehicle is operated normally, and the deterioration of service to passengers can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 2 shows the overall construction of the elevator door control apparatus according to the present invention. In FIG. 2, 1 is a car, 2 is a rope for driving the car 1,
Reference numeral 3 denotes a sheave directly connected to the electric motor 4, and rotation of the electric motor 4 causes the car 1 to travel vertically through the sheave 3 and the rope 2. 5 is a car door provided in the car, 6 is a door motor that drives the car door to open and close, 7 is a landing door provided in the hall 8, 9 is an engagement roller provided in the car door 5,
Numeral 10 is an engaging element provided on the hall door, and when the car door 5 is opened and closed, the engagement roller 9 and the engaging element 10 are engaged, and the hall door 7 is opened and closed in synchronization with the car door 5. 11 is a car door switch for detecting that the car door 5 is closed, 12
Is a hall door switch for detecting that the hall door 7 is completely closed. The car door 5 and the landing door 7 are collectively referred to as a door 57. Reference numeral 21 is a roller directly connected to the speed detector 20. The roller 21 contacts the rope 2, and when the car 1 travels up and down, the roller 21 rotates, so that the speed detector 20 can accurately measure the speed of the car 1. You can 22
The amplifier amplifies the output voltage of the relay 23 connected to the amplifier 22, and when the output is even a little, the relay 23
Are configured to be biased.

FIG. 1 is an electrical connection diagram of a door control device according to the present invention. In the figure, P and N are DC power supply terminals, 31a
A normally open contact (not shown) for detecting that the cage door switch 11 and the hall door switch 12 are all closed, 32
a is a normally-open contact of a relay (not shown) which is closed after a predetermined time has elapsed after the car door 5 is opened (which is deenergized when the car 1 runs), and 33a is not shown that the car 1 is normally decelerated and urged before landing. A normally closed contact of the relay, 34 is a relay for activating the elevator, 34a is its normally open contact, 34b is its normally closed contact, 35 is a door motor, 36 is a relay for giving a closing command to the car door 5, 36a ₁ , 36a ₂ is its normally open contact,
36b is a normally closed contact, 37 is a relay that gives an opening command to the car door 5, and 37a ₁ and 37a ₂ are normally open contacts, CL
S is a normally closed contact for detecting the closed end of the car door 5, OLS is a normally closed contact for detecting the open end of the car door, DZ is a contact for detecting a door zone, and a normally closed contact of the relay 23.

Next, the operation of this embodiment will be described.

Now, when the contact 32a is closed a predetermined time after the car door 5 is opened, P-32a-33a-34-N
Relay 34 is energized by the circuit of P-36a _1-
The door motor 35 is driven by the circuit 35-36a ₂ -N, and the car door 5 starts to close. At this time, the engagement roller 9
And the engaging element 10 are engaged with each other, and the landing door 7 starts to be closed synchronously. When the car door 5 is completely closed, the contact CLS is opened and the relay 36 is deenergized. When the door 57 is closed, the car runs by the control device (not shown). It should be noted that the relay 34 is self-held by the contact 34a after starting traveling.

Next, when the passenger forcibly opens the car door 5 while the car 1 is traveling, the car door switch 11 opens and the contact 3
1a opens and the relay 34 deactivates. At this time, the control device (not shown) issues a command to stop the car 1 suddenly. Therefore, the car 1 rapidly decelerates, but at this time,
Even if the car 1 passes through the door zone, when the car 1 is decelerating, since the output is generated in the speed detector 20, the relay 23 is energized and the contact 23b is opened, so the relay 37 is irrelevant. . When the car 1 is stopped, when it is stopped within the range of the door zone, the contact DZ and the contact 23b
Also closed, so P-34b-DZ-36b-OLS
The -37-N circuit activates the relay, and the P-37
a ₁ -35-37a ₂ door motor 35 by the circuit of -N is driven to open the car door 5, a landing door 7 Mokago door 5 so simultaneously engaging member 7 and the engaging roller 5 is engaged properly engaged Can be opened synchronously.

After that, when a call is generated, the car 1 normally starts in the same manner as above.

Thus, even if the car 1 suddenly stops for some reason, means for detecting that the car 1 has completely stopped is provided, and the door 57 is operated only when this means is activated and within the range of the door zone. Since the opening is opened, the disengagement disengagement unlike in the related art does not occur, so that it is possible to improve the service to elevator passengers and to provide an inexpensive control device.

In this embodiment, the stopping of the car 1 is detected by the moving speed of the rope. However, a speed detector can be directly attached to the car 1 to detect the relative speed with the rail. Also, measure the acceleration of the car 1,
It can be detected from the acceleration value that the car 1 has stopped. As described above, any device that can detect that the car 1 has stopped can be used instead.

[0019]

As described above, according to the present invention, means for detecting that the car has stopped is provided, and when the car enters the range of the door zone and the detection means is activated,
Since the door is controlled so as to be opened, it is possible to eliminate the trouble of disengagement of the engagement element and improve the service to elevator passengers.

[Brief description of drawings]

FIG. 1 is an electrical connection diagram showing an embodiment of an elevator door control device of the present invention.

FIG. 2 is an overall configuration diagram of an embodiment according to the present invention.

[Explanation of symbols]

 1 Car 5 Car Door 6 Door Motor 7 Landing Door 9 Engaging Roller 10 Engager 20 Speed Detector 21 Roller 22 Amplifier

Claims (1)

[Claims] 1. When an elevator car is within a predetermined door zone, an elevator door controller that drives a door motor to open and close the car door and a landing door detects that the car has stopped. A door control device for an elevator, comprising: detection means; and means for opening the door according to the operation of the detection means.