JPS627666Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an elevator door control device.

Generally, elevator doors open when a car arrives at a landing, and after a preset time has elapsed, that is, when the door opening time has expired, the door closes. Furthermore, the door can be closed by operating the door close button even before the door opening time has expired. At this time, if a door safety device such as a safety device or a photoelectric device detects a passenger getting on or off the vehicle and is activated, it will prevent the door from opening or closing in reverse.
Passengers can get on and off the train safely without any problems. However, in this case, as long as the door safety device is activated, even if the door opening time has expired,
Furthermore, even if the door close button is operated, the door remains open and the car cannot depart, so conventionally the door was forced to close after a certain period of time (for example, 30 seconds) had elapsed after the door open time expired. This prevents the elevator from becoming inoperable due to mischief, etc.

By the way, as mentioned above, the door safety device is activated and the door remains open, not only due to mischief; for example, when the car is almost full, Due to the carelessness of the person riding the vehicle, a part of the passenger's body or clothing may block the light beam, and the safety device is often activated without the person noticing. As a result, the door close button is also disabled, and the departure of the elevator is delayed until the person himself notices this or until the forced door closing time has elapsed, resulting in a deterioration of operating efficiency.

This invention was made to solve the above-mentioned disadvantages, and the door close button is operated only when passengers have already boarded and alighted, and at this time the door safety device is activated. This means that there is a high possibility that this is due to the carelessness of someone riding near the door, so if the door close button is operated even though the door safety device is activated, a buzzer or bell etc. will be activated. To eliminate wasted time to stop operation due to passenger carelessness by informing the operator that a door safety device is activated by an alarm device, and to enable smooth operation without waiting until the time for forced door closing has elapsed. The purpose of the present invention is to provide a door control device that can perform the following functions.

The present invention will be explained below with reference to the drawings. The figure shows an example of the circuit configuration of the present invention. In the figure, A1 and A2 are power supply buses for control, DC is a door close button provided inside the car, and R is a well-known door control circuit (when energized). Ra is the normally open contact of the door closing command relay (not shown) that issues a door closing command to the vehicle (not shown), Fa is the normally open contact of the relay (not shown) that is energized when the light beam of the photoelectric device that detects passengers is interrupted, BZ is a buzzer.

In the above configuration, when the elevator arrives at the landing, the door opens by a circuit not shown, and when the door opening time expires, the door closes. Even before or after the door open time expires, if boarding and alighting is completed and the door close button DC inside the car is pressed, A1-DC-
The door closing command relay R is energized by the R-A2 circuit, and the door starts to close, but if at this time the passenger's carelessness blocks the light beam of the photoelectric device,
The relay that detects this is energized and the contact Fa is closed, and a circuit (not shown) prevents the door from closing, but on the other hand, the contact Ra is also closed, so the contact Fa is closed.
A voltage is applied to the buzzer BZ by the circuit 1-Fa-Ra-BZ-A2 to generate an alarm sound. Therefore, by noticing this and not blocking the light beam, the passenger will deenergize the relay that detects this, open the contact Fa, and the buzzer BZ will stop sounding, and the door will begin to close and depart immediately. It becomes possible to do so. In the above embodiments, a photoelectric device was used as the door safety device, but it goes without saying that a device using a safety device, a device using ultrasonic waves, etc. can be similarly applied. Similarly, the notification device is not limited to a buzzer or a bell, but may be an audio device, a visually appealing display device, or the like.

As described above, in this invention, if the door close button is operated even though the door safety device is activated, a warning device such as a buzzer is used to alert the passenger, so the safety device may be activated due to the passenger's carelessness. This prevents delays in elevator departure and greatly improves operating efficiency.

[Brief explanation of the drawing]

The figure is a circuit diagram showing an embodiment of an elevator door control device according to the present invention. DC...Door close button, R...Door close command relay, Ra...
...Normally open contact of the door close command relay, Fa: Normally open contact of the relay that energizes when the light beam is interrupted, BZ: Buzzer.

Claims (1)

[Scope of utility model registration request] When the car arrives at the landing, the door opens, and when the door close button is operated or the door opening time expires, the door closes. However, when the door safety device that detects passengers is activated, the door closes. What is claimed is: 1. A control device for an elevator door, comprising: a notification device that is activated when the door close button is operated while the door safety device is activated.