JPH05116860A - Escape device in case of elevator trouble - Google Patents

Abstract

PURPOSE: To enable a person in a basket to escape without being locked in by providing a connection means for bypassing a safety operation circuit and connecting wiring when the safety operation circuit fails, an alarming means for alarming a fault and a slow operation means for moving the basket to a closest floor based on an alarm. CONSTITUTION: When the safety operation circuit 7 fails during the operation of an elevator, the coil part 9 of an electromagnetic switch A is degaussed, a normally closed contact point A2 11 is closed, a fault lamp FL 12 is lighted and the basket is stopped in the middle of an elevating/lowering path. The person in the basket turns on an escape operation input switch EOS 15. Then, when one of up/down switches 19 and 20 is pressed, a current is made to flow to a motor 1 and the basket is moved slowly for safety to the closest floor by the low speed rotation of the motor 1. When the basket comes to a door zone, the rotation of the motor 1 is stopped and the basket is stopped at the closest floor. Then, when the door of the elevator is opened, the person can escape from the basket.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator escape system for driving a car to a nearest floor when a safe driving circuit for safely operating the car fails.

[0002]

2. Description of the Related Art In recent years, personal houses have tended to be high-rise, and elevators have come to be used in such high-rise personal houses. This private residential elevator is also equipped with a safe driving circuit as in the case of commercial use, and the driving power flows to the motor only when the safe driving circuit is operating with current so that the car moves up and down. It has become.

[0003]

However, in such a conventional elevator for a private house, if the safe driving circuit fails for some reason and fails to operate,
For safety's sake, the motor will soon lose current and the car will stop halfway down the hoistway. In that case, since there is no caretaker in the private house, there is a problem that when the family member is out, the person using the house is trapped in the basket.

It is an object of the present invention to provide an escape device for a failure of an elevator that moves a car slowly to the nearest floor even if the safe driving circuit fails.

[0005]

In order to achieve such an object, according to the present invention, a motor for driving a car and a wire for safely driving the car are provided. A safe driving circuit, connection means for connecting the wiring by bypassing the safe driving circuit when the safe driving circuit fails, and warning means for warning the failure of the safe driving circuit,
Based on the warning of the warning means, a slow running means for moving the car to the nearest floor is provided.

[0006]

If the safe driving circuit fails during the operation of the elevator, the car stops in the middle of the hoistway, and the failure is warned by the warning means. The motor is rotated at a low speed by the slow driving means to slowly move the car to the nearest floor and stop. You can then escape from the car by opening the elevator doors.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. 1 and 2 are views showing an embodiment of an elevator escape device according to the present invention.

In the figure, reference numeral 1 is a motor for vertically moving an elevator car in a hoistway, and the current from a power source 2 is converted by an inverter into the motor 1, and an OR circuit 3, an AND circuit 4, 5
Shed through. An operation mode switch 6 is provided between the OR circuit 3 and the power source 2, and the operation mode switch 6 operates the motor 1 at a normal operation side terminal 6a for operating the motor 1 at a normal speed, and the motor 1 at a speed higher than the normal speed. Also has an inspection side terminal 6b for rotating at low speed.

Between the power supply 2 and the AND circuit 4,
A safe driving circuit 7 for safely driving the elevator is provided on the wiring 8 between the power supply 2 and the AND circuit 4. The wiring 8 is provided with the coil portion 9 of the electromagnetic switch A in series with the safe driving circuit 7, and the wiring 1 bypasses the safe driving circuit 7.
0 is a normally closed contact A ₁ 11 of the electromagnetic switch A and a failure lamp F.
L12 is installed in parallel. Here, the coil portion 9 and the normally closed contact 11 of the electromagnetic switch A are connection means for bypassing the safe driving circuit 7 and connecting the wiring 8 when the safe driving circuit 7 fails and does not operate. The failure lamp EL12 is a warning means for warning the failure.

A normally open contact A of the electromagnetic switch A is provided between the OR circuit 3 and the normal operation side terminal 6a of the operation mode switch 6.
₃ 13 is interposed. An escape operation switch EOS 15 is provided on the wiring 14 that bypasses the operation mode switch 6, and in addition, an escape operation lamp EL 16 and a normally closed contact A ₂ 17 of the electromagnetic switch A are provided. Further, an OR circuit 18 is connected to the AND circuit 5, and up / down switches 19 and 20 for moving the car up and down when the safe operation circuit 7 is out of order are connected to the OR circuit 18.

On the other hand, a door zone lamp DZL21 which lights up when the car moves up and down to the door zone during the failure.
In addition, the coil portion 22 of the electromagnetic switch B is provided, and the normally closed contact B ₁ 23 is provided on the wiring 14. The escape operation switch EOS15, the up / down switches 19 and 20, the electromagnetic switches A and B, and the like constitute the slow drive means as a whole.

By the way, the failure light FL12 and the escape operation light E
L16, door zone lamp DZL21, up / down switches 19 and 20, escape operation input switch EOS15
Etc. are collectively provided on the panel 24 as shown in FIG.
This panel 24 is mounted in the car.

If the safe operation circuit 7 fails during the operation of the elevator, the coil portion 9 of the electromagnetic switch A is demagnetized, the normally closed contact A ₁ 11 is closed, and the failure lamp FL12 is turned on. In this case, normally open contacts A ₃ 13 is no current flowing to the motor 1 is opened, the car stops in the middle of the hoistway.

Since the trouble lamp FL12 is turned on, the person in the car knows that the cause of the car stop is the failure of the safe driving circuit 7, and the person in the car can find the escape operation input switch EO.
S15 will be inserted. The escape operation light EL16 is turned on, and at this time, the normally closed contact A ₂ 17 has already been closed due to the demagnetization of the coil portion 9 of the electromagnetic switch A, and the normally closed contact B ₁ 2
Since 3 is also closed, the current for slow running flows from the inspection contact 6b side toward the motor 1.

Next, the up and down switches 19, 20
When any one of the above is pressed, the current flows to the motor 1, and the low speed rotation of the motor 1 causes the car to slowly move toward the nearest floor for safety. When the car comes to the door zone, the coil portion 22 of the electromagnetic switch B is excited with a door zone lamp DZL21 is lit, the normally closed contact B ₁ 23 opens. When the normally closed contact B ₁ 23 opens, the motor 1
Current stops flowing, the motor 1 stops rotating, and the car stops at the nearest floor. There, you can escape from the car by opening the elevator doors.

The escape device at the time of failure can be used not only in a private house but also in a large building for business purposes, and a panel with switches, lamps, etc. installed in a manager's room for rescue. It may be used as a device.

[0017]

As described above, according to the present invention, when the safe driving circuit fails, the safe driving circuit is bypassed and the wiring is connected by the connecting means, and the slow running operation is performed based on the warning of the failure. By means, the car is slowly moved to the nearest floor so that it can be safely moved, so that the person in the car can escape from the car without being trapped.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing an embodiment of an escape device for a failure of an elevator according to the present invention.

FIG. 2 is a front view of a panel on which switches and the like used in the device are attached.

[Explanation of symbols]

1 ... Motor, 7 ... Safe driving circuit, 11 ... Electromagnetic switch A
Normally closed contact, 12 ... Failure light, 13 ... Normally open contact of electromagnetic switch A, 15 ... Escape operation switch, 17 ... Electromagnetic switch A
Normally closed contacts, 19, 20, ... Up, down switches, 2
3 ... Normally closed contact of electromagnetic switch B.

Claims (1)

[Claims] 1. A motor for driving a car, a safe driving circuit provided in a wiring for safely driving the car, and when the safe driving circuit fails, the safe driving circuit is bypassed and the safety driving circuit is bypassed. It is characterized by further comprising connecting means for connecting wiring, warning means for warning a failure of the safe driving circuit, and slow running means for moving the car to the nearest floor based on the warning of the warning means. Escape device for elevator failure.