JP2013133180A - Control device of elevator door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the control device of an elevator door dispensing with wires for power supply to various pieces of equipment mounted on a car side door and a landing hall side door and for signal communication as far as possible, and improved in installation property and reliability.SOLUTION: The control device of an elevator door includes a door control portion 11, light curtains 4a, 4b detecting obstacles in the closing operation of slide doors 3a, 3b, power transmission portions 6a, 6b provided to the upper frame of the elevator car 1, and a power source portion 10. Each of the sliding doors 3a, 3b includes a power receiving portion receiving the power in a non-contact manner from the power transmission portions 6a, 6b in a stand-by time before opening operation, an electricity storage means of storing power received by the power receiving portion, and an object detection means. The light curtains 4a, 4b are supplied with the power from the electricity storage means.

Description

  The present invention relates to an elevator door control device that controls opening and closing of a slide door, and more particularly to an elevator door control device that includes an object detection means for detecting an obstacle when the slide door is closed.

  Conventionally, an elevator that does not require power wiring on the landing side by arranging a power transmission coil on the elevator car side door and a power receiving coil on the landing side door to supply power to the landing safety device. A door control device has been proposed (see, for example, Patent Document 1).

  The conventional device described in Patent Document 1 includes a pinch detection sensor installed on each of the landing-side door and the car-side door, and a non-contact power supply from the primary coil of the car-side door to the secondary coil of the landing-side door. A contact power feeding device, and the non-contact power feeding device feeds power to the pinch detection sensor of the landing side door.

With the above configuration, when adding a safety device to the landing-side door of an existing elevator, there is no need to newly perform wiring work from the landing side to supply power to the pinching detection sensor of the landing-side door, and it is easy and low-cost work Is applicable.
However, although the above-mentioned conventional apparatus considers the wiring of the landing side door, it does not consider at all the wiring to the equipment of the cage side door which is a movable part.

JP 2010-189086 A

  Conventional elevator door control devices do not take into account any wiring to the cage door device, which is a movable part, and wiring to the movable part (door) is required, so there is a possibility of disconnection, etc. Therefore, there is a problem that the installation property and the reliability cannot be sufficiently improved.

  The present invention has been made to solve the above-described problems, and eliminates the need for power supply and signal communication wiring to the cage-side door, which is a movable part, and various devices attached to the landing-side door. An object of the present invention is to obtain an elevator door control device capable of sufficiently improving installation and reliability.

  An elevator door control device according to the present invention includes: a door control unit that controls opening and closing of a sliding door provided at an entrance of an elevator car; and an object detection unit that detects an obstacle that becomes an obstacle when the sliding door is closed. The elevator door control device includes a power transmission unit provided on an upper frame of the elevator car, and a power supply unit that supplies power to the power transmission unit, and the slide door is configured to transmit the power transmission unit during standby before the sliding door is opened. A power receiving unit to which electric power is supplied in a non-contact manner, an electric storage unit for accumulating electric power received by the power receiving unit, and an object detection unit. The object detection unit is supplied with electric power from the electric storage unit to close the sliding door. It detects the presence or absence of obstacles during operation.

  According to the present invention, the wiring for supplying power to the object detection device attached to the slide door and the movable part cable become unnecessary, and the installation property is improved and the reliability can be improved.

It is a perspective view which shows the door control apparatus of the elevator which concerns on Embodiment 1 of this invention. It is a side view which shows the door control apparatus of the elevator which concerns on Embodiment 1 of this invention. It is a flowchart which shows the battery remaining charge check operation | movement by Embodiment 1 of this invention.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an elevator door control apparatus according to Embodiment 1 of the present invention, which is shown together with an overall schematic configuration of an elevator apparatus having an elevator car 1 and a control panel 9.

  In FIG. 1, an opening 2 serving as an entrance / exit of the elevator car 1 is opened and closed by slide doors 3a and 3b that automatically open and close when landing on the service floor landing, and when the slide doors 3a and 3b are opened, Passengers can get on and off the elevator car 1.

Light curtains 4a and 4b, which are object detection means (safety devices) for the slide doors a and 3b, are attached to the front ends of the slide doors 3a and 3b.
The light curtains 4a and 4b detect foreign matter existing between the slide doors 3a and 3b.

  A branch box 7 is installed on the upper frame of the elevator car 1 to supply power to each device (not shown) in the elevator car 1 and to send and receive signals. In the branch box 7, a light curtain 4a is installed. 4b is provided with a car-side radio module 8 that performs radio communication with a door-side radio module (described later with reference to FIG. 2).

  The upper frame of the elevator car 1 on the opening 2 side performs wireless charging for a door motor 5 that drives the slide doors 3a and 3b and a battery (described later with reference to FIG. 2) in the light curtains 4a and 4b. Power transmission units 6a and 6b are installed.

The control panel 9 has a power supply unit 10 and a door control unit 11 and is connected to the branch box 7 via a cable 12.
The power supply unit 10 supplies power to each device in the elevator car 1 and the power transmission units 6a and 6b on the slide doors 3a and 3b via the cable 12 and the branch box 7.
The door control unit 11 performs opening / closing control of the slide doors 3a and 3b based on detection signals of the light curtains 4a and 4b and other information.

FIG. 2 is a side view showing the elevator door control apparatus according to Embodiment 1 of the present invention, and shows a state viewed from the front of the slide doors 3a and 3b.
In FIG. 2, the light curtain 4a is constituted by a light curtain receiver in which a plurality of light receiving elements 13 that receive light L from the light curtain 4b are arranged in an array.
The light curtain 4b is configured by a light curtain projector in which a plurality of light projecting elements 14 that project the light L are arranged in an array on the light curtain 4a side.

  As a result, when the object blocks the light L from the light projecting element 14 of the light curtain 4b, the amount of light incident on the light receiving element 13 of the light curtain 4a decreases, and therefore the presence or absence of an object existing between the two is detected. Can do.

  The light curtains 4a and 4b include door side radio modules 15a and 15b that communicate with the car side radio module 8, and a power reception unit 16a that receives power supply in the vicinity of the power transmission units 6a and 6b. 16b and batteries 17a and 17b for storing the received power.

  The door-side wireless modules 15a and 15b include detection signals from the light projecting elements 14 and the light receiving elements 13, control signals for the light curtains 4a and 4b, remaining amounts of the batteries 17a and 17b, and the light projecting elements 14 and the light receiving elements 13. Communicate synchronization signals for synchronization between them.

Next, the operation according to the first embodiment of the present invention shown in FIGS. 1 and 2 will be described.
First, when the elevator car 1 arrives at the target floor, the sliding doors 3a and 3b automatically open the door, thereby enabling passengers to pass between the elevator car 1 and the landing.
After a certain period of time has elapsed since the sliding doors 3a and 3b were opened, if the light curtains 4a and 4b detect that foreign objects exist between them, it is determined that the object is present, and the door-side wireless module 15a, From 15b, an object detection signal is transmitted to the car-side radio module 8.

Note that when performing the object detection operation, it is necessary to synchronize the light receiving timing of the light receiving element 13 and the light emitting timing of the light projecting element 14, so Communication with the element 14 is performed for synchronization between the two.
The car-side radio module 8 that has received the object detection signals from the door-side radio modules 15 a and 15 b transmits a detection signal to the door control unit 11 in the control panel 9 via the cable 12.

When the door control unit 11 receives an object detection signal indicating “object present”, the door control unit 11 maintains the open state of the slide doors 3a and 3b without generating a door closing operation command for the slide doors 3a and 3b. .
On the other hand, when the object detection signals from the light curtains 4a and 4b are not received, the door control unit 11 drives the door motor 5 by transmitting a door closing command to the door motor 5 through the branch box 7. Then, the door closing operation (see white arrows in FIG. 2) of the slide doors 3a and 3b is started.

When the door control unit 11 receives an object detection signal from the light curtains 4a and 4b during the door closing operation, the door control unit 11 sends a door opening command (door reversing operation command) to the door motor 5. ) Is performed to open the sliding doors 3a and 3b.
By the above operation, even when the door is being closed, if a foreign object between the slide doors 3a and 3b is detected and an object detection signal is generated, the door opening operation is not completed. Ensure safety.

The power receiving units 16a and 16b of the light curtains 4a and 4b are arranged to face the power transmitting units 6a and 6b when the door closing operation is completed.
Thereby, the battery 17a, 17b is charged via the power receiving units 16a, 16b while the door is closed.
In general, since the slide doors 3a and 3b are closed except when passengers get on and off, the battery 17a and 17b can be charged efficiently by adopting the above arrangement.

  The operation of the light curtains 4a and 4b is achieved by using the power of the batteries 17a and 17b charged by the wireless communication power supply from the power transmission units 6a and 6b to the power reception units 16a and 16b. 4b can operate without using cables such as electric wires and signal lines, and can perform a desired function.

  As described above, the light curtains 4a and 4b serving as object detection means of the slide doors 3a and 3b can operate and perform functions without using cables such as electric wires and signal lines for connecting to other devices. Therefore, it is possible to realize a highly reliable safety function without causing a failure due to cable disconnection or the like.

In the first embodiment (FIGS. 1 and 2), the double-sliding slide doors 3a and 3b have been described as an example. However, the same effect can be obtained with a single-sliding sliding door or four double-sliding sliding doors. It goes without saying that can be obtained.
For example, in the case of a one-sided slide door, a plurality of light receiving elements may be installed on the slide door side, and a plurality of light projecting elements may be installed on the side of the frame facing the slide door.

Next, the remaining amount check process routine for the batteries 17a and 17b of the light curtains 4a and 4b will be described with reference to FIG.
FIG. 3 is a flowchart showing the remaining battery level checking operation according to the first embodiment of the present invention, and shows a processing routine of the control panel 9.

In FIG. 3, the control panel 9 first determines whether or not each signal from the light curtains 4a and 4b is present in order to confirm the presence / absence of signals from the light curtains 4a and 4b (step S1).
If it is determined in step S1 that there is no signal (that is, NO), the charge amount of the batteries 17a and 17b is considered to be almost zero, and the door controller 11 is instructed to open and close the slide doors 3a and 3b at the lowest speed. On the other hand, a low-speed opening / closing mode transition command is generated (step S2), and the check routine of FIG.

  On the other hand, if it is determined in step S1 that there are signals from the light curtains 4a and 4b (that is, YES), the control panel 9 subsequently communicates with the light curtains 4a and 4b for remaining amount confirmation. It is determined whether or not the remaining amount of the batteries 17a and 17b is sufficient (exceeds a predetermined value that is a lower limit value capable of normal operation) (step S3).

In step S3, if it is determined that the remaining amount of the batteries 17a and 17b is less than a predetermined value and is not sufficient (that is, NO), a command for shifting to the power saving mode is issued to the light curtains 4a and 4b. Generate (step S4).
Here, the power saving mode means, for example, a mode in which only a part of the light projecting elements 14 are turned on without lighting all the light projecting elements 14 of the light curtain 4b.

As a result, the use of the batteries 17a and 17b can be continued for a long time.
After shifting to the power saving mode in step S4, the low speed opening / closing mode is set to the door control unit 11 so that the sliding doors 3a, 3b open and close at the lowest speed, similarly to the case where the batteries 17a, 17b are out of charge. A shift command is generated (step S2), and the check routine of FIG.

  On the other hand, if it is determined in step S3 that the remaining amount of the batteries 17a and 17b is sufficient (that is, YES), communication with the light curtains 4a and 4b is possible and the remaining amount of the batteries 17a and 17b remains. Assuming that the amount is sufficient, normal operation is continued (step S5), and the check routine of FIG. 3 is terminated.

  As a result, even when the remaining amount of the batteries 17a and 17b is lost and the operation of the light curtains 4a and 4b becomes impossible, the service of the elevator car 1 is reduced to a minimum while ensuring the functions of the slide doors 3a and 3b. Can be suppressed.

  As described above, the elevator door control device according to the first embodiment (FIGS. 1 to 3) of the present invention controls opening and closing of the slide doors 3a and 3b provided in the opening 2 (entrance / exit) of the elevator car 1. In an elevator door control device having a door control unit 11 that performs, and an object detection means that detects an obstacle that becomes an obstacle when the sliding doors 3a and 3b are closed, a power transmission unit provided on an upper frame of the elevator car 1 6a and 6b, and a power supply unit 10 that supplies power to the power transmission units 6a and 6b.

The sliding doors 3a and 3b receive power received by the power receiving units 16a and 16b and the power receiving units 16a and 16b, which are supplied in a non-contact manner from the power transmitting units 6a and 6b during standby before the opening operation of the sliding doors 3a and 3b. The batteries 17a and 17b (power storage means) to be stored and the light curtains 4a and 4b (object detection means) are provided.
The light curtains 4a and 4b are supplied with electric power from the batteries 17a and 17b, and detect the presence or absence of an obstacle when the sliding doors 3a and 3b are closed.

This eliminates the need for power supply wiring to the light curtains 4a and 4b attached to the slide doors 3a and 3b, thereby improving the installation performance and eliminating the movable part cable and improving the reliability.
Further, at the time of standby before the sliding doors 3a and 3b are opened (when the door is closed), the power receiving units 16a and 16b are arranged to face the power transmitting units 6a and 6b, and supply power without contact from the power transmitting units 6a and 6b. Thus, the batteries 17a and 17b can be charged efficiently.

Further, the elevator door control device according to the first embodiment of the present invention includes the car-side radio module 8 provided on the upper frame of the elevator car 1 and the slide-doors 3a and 3b. Door-side wireless modules 15a and 15b that perform wireless communication with each other.
The door side radio modules 15a and 15b are supplied with power from the batteries 17a and 17b, and transmit the object detection signals detected by the light curtains 4a and 4b to the car side radio module 8.

As a result, it becomes possible to wirelessly transmit and receive object detection signals from the light curtains 4a and 4b attached to the slide doors 3a and 3b, thereby improving the installation property and eliminating the movable part cable and improving the reliability.
That is, wiring to the light curtains 4a and 4b is unnecessary, that is, wiring to the movable part is not required, so that wiring saving, installation labor saving, and occurrence of failure due to disconnection can be suppressed.

  When the door control unit 11 cannot receive signals from the door-side wireless modules 15a and 15b, the door control unit 11 sets the opening / closing speed of the slide doors 3a and 3b to a low speed (step S2). Thereby, even when the remaining charge of the batteries 17a and 17b is almost zero, it is possible to suppress the service degradation of the elevator car 1.

Further, the light curtains 4a and 4b are arranged in an array at the opening and closing ends of the slide doors 3a and 3b, and are arranged in an array to emit light toward the plurality of light receiving elements 13. And a plurality of light projecting elements 14.
When the remaining charge amount of the batteries 17a and 17b decreases to a predetermined value or less, the door control unit 11 shifts to the power saving mode (step S4), and the light projecting element that emits light among the light projecting elements 14 Reduce the number of 14. As a result, the usable time of the batteries 17a and 17b can be extended.

  DESCRIPTION OF SYMBOLS 1 Elevator basket, 2 Opening part (entrance / exit), 3a, 3b Sliding door, 4a, 4b Light curtain (object detection means), 5 Door motor, 6a, 6b Power transmission part, 7 Branch box, 8 Car side radio | wireless module, 9 Control panel DESCRIPTION OF SYMBOLS 10 Power supply part, 11 Door control part, 12 Cable, 13 Light receiving element, 14 Light emitting element, 15a, 15b Door side radio | wireless module, 16a, 16b Power receiving part, 17a, 17b Battery, L light.

Claims (5)

A door control unit that controls opening and closing of a sliding door provided at an entrance of the elevator car;
Object detecting means for detecting an obstacle that becomes an obstacle when the sliding door is closed;
In an elevator door control device having
A power transmission unit provided on an upper frame of the elevator car;
A power supply unit for supplying power to the power transmission unit,
The sliding door is
At the time of standby before the opening operation of the sliding door, a power receiving unit that is contactlessly supplied with power from the power transmitting unit,
Power storage means for storing the power received by the power receiving unit;
The object detection means,
The elevator door control device according to claim 1, wherein the object detection means is supplied with electric power from the power storage means and detects the presence or absence of the obstacle when the sliding door is closed. A car-side radio module provided on an upper frame of the elevator car;
A door-side wireless module that is provided on the sliding door and performs wireless communication with the basket-side wireless module;
2. The door control for an elevator according to claim 1, wherein the door-side wireless module is supplied with power from the power storage unit and transmits an object detection signal detected by the object detection unit to the car-side wireless module. apparatus.   3. The door control of an elevator according to claim 2, wherein the door control unit sets the opening / closing speed of the sliding door to a low speed when the signal from the door-side wireless module cannot be received. apparatus. The object detection means includes
A plurality of light receiving elements provided in an array at the open / close end of the sliding door;
4. The apparatus according to claim 1, further comprising: a plurality of light projecting elements that are provided in an array and emit light toward the plurality of light receiving elements. 5. Elevator door control device.   The door control unit shifts to a power saving mode and reduces the number of light projecting elements to emit light among the plurality of light projecting elements when the remaining charge amount of the power storage unit decreases to a predetermined value or less. The elevator door control device according to claim 4.

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