JPS5911507B2 - elevator door safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an elevator-door safety device.

Recently, elevators installed in high-rise residential buildings are often used only by infants or children, and these infants or children approach the landing door while waiting for the passenger to arrive.
I often lean back or touch my hands.

When a passenger car arrives at a time like this and the landing door is opened, a person's hand or arm may become caught between the landing door and the doorway frame.
There is a risk of injury.

To explain the conventional elevator shown in FIGS. 1 and 2, 1 and 1' are landing doors consisting of sliding doors that open and close the entrance 2, doors that open and close in opposite directions from the center of the entrance 2, and 3. Entrance/exit frame forming entrance/exit 2, 3a,
Reference numeral 3b denotes a side frame constituting the entrance/exit frame 3, and a gap g is provided between it and the landings 1, 1' so that opening and closing of the landing doors 1, 1' will not be hindered.

4 is the landing, 5 is the elevator call button, 6 is the car, 7
, 7' are car doors consisting of sliding doors that open and close the entrance 8 of the car 6, and similarly to the landing doors 1 and 1', they open and close from the center of the entrance 8 in the reaction direction, respectively.

9 is a passenger waiting for the arrival of a car.

Suppose now that passenger 9 is about to board car 6, operates call button 5, approaches door 1 of the landing abnormally and touches door 1 of the landing while waiting for car 6 to arrive.

When the car 6 arrives after a certain period of time, the landing door 1 is opened at the same time as the landing door 1' without any prior notice by a drive machine (not shown) installed on the car 6 side, and the passenger As shown in FIGS. 1 and 2, the 90 hand is caught in the gap g between the doorway frame 3 and the side frame 3a as the landing door 1 moves.

Furthermore, there is no device between the landing door 1 and the side frame 3a to detect when a hand or arm is caught.
There was a risk of injury as the drive machine continued to open the door.

This invention was made to prevent such accidents.When a passenger waiting for the arrival of a car abnormally approaches the landing door, this invention is detected and the passenger can safely exit from the landing door. This prevents the door from opening until the door is within a certain distance.

Next, an embodiment of the present invention will be described with reference to FIGS. 3 to 6.

In the figure, the same parts as in Figures 1 and 2 are given the same reference numerals.
Reference numeral 10 denotes a detection device consisting of a photoelectric device, that is, a non-contact type detector, provided on the side frames 3a and 3b of the entrance/exit frame 3. A normally open contact is provided inside, and when the luminous flux 11 is interrupted, it closes and creates an electric circuit. is connected.

The position of the light beam 11 is arranged to correspond to the reach of an infant or child, and if the light beam 11 is not blocked, the door 1
, 1' out of reach.

FIG. 6 is a circuit diagram of essential parts of an elevator for stopping the elevator on the third floor.

In FIG. 6, 21 is a normally open contact of the IFL (FL indicates a floor of a high-rise building) detection device 10, 22 is a normally open contact of the 2FL detector 10, and 23 is a normally open contact of the 3PL detector 10. , 31F to 33F are coils that are excited when the normally open contacts 21 to 23 are turned on, 31Fa to 33Fa, and 31Fb.
~33Fb each becomes O when the coils 31F~33F are energized.
Normally closed and normally open contacts that turn FF or ON, 41F to 43F are time relay coils, 41Fa to 43Fa are normally open contacts, and 51 is a drive that opens and closes landing doors 1 and 1' and car door 7°1'. 52 is an alarm installed on the landing 4 side that emits light or sound when activated.

53 is a notification device provided on the car 6 side, 54 is a nearest floor operation command device, 61a to 63a; 61'b to 63b and 61c to 63c are normally open contacts of an elevator position detection device (not shown). When the car reaches its destination floor, only the contacts on the corresponding floor are turned on.

Also, ((1) and (c) are power supplies. Now, passenger 9
If, after operating the call button 5 at FL and before the arrival of the car 6, the light beam 11 approaches the landing door 1 abnormally and the light beam 11 is interrupted, the contact 21 closes and the power supply (force→contact 21→ A circuit of coil 31F → coil 41F → power supply (-) is configured, contact 31 Fa is OFF, contact 31 Fb is ONL
, power supply (+) → contact 31 Fb → alarm 52 → power supply (→
The alarm 52 provided on the landing 4 side operates to prompt the passengers 9 to leave the door 1 of the landing.

Furthermore, when the car 6 arrives at the IFL, the contacts 61a>61b and 61c of the position detector are turned on, so the power supply (±
→Contact 31Fb→Contact 61a→Announcer 53→Power supply Therefore, we will inform you that we will not be opening the door for a while.

Also, since the contact 31Fa is OFF at this time, the power supply to the drive unit 51 is cut off and the door does not open.
The safety of passenger 9 is ensured.

In addition, the contact 41 Fa is turned on by a known timer when a predetermined time period elapses after the coil 41F is energized, for example, the time required for the passenger to leave the landing door 1, so that the power source (force→contact 61b→ Contact point 41Fa → nearest floor operation command device 54 → power supply (→ circuit is configured, car 6
Since the elevator moves to the nearest floor, 2FL, and opens the door, it is possible to prevent a decrease in the operating efficiency of the elevator.

In the above embodiment, the case where the passenger 9 is on the IFL has been described, but the present invention can operate in the same way even when the passenger is on another floor, that is, the 2FL or the 3FL.

A detailed explanation of this point will be omitted.

Further, in the above embodiment, a detection device is placed at the landing to detect when a passenger waiting for a passenger to arrive at the landing approaches abnormally close to the door of the landing, and prevents the door from opening.
If a detection device is placed in the entrance frame in front of the car door,
It is possible to prevent an accident in which a hand or arm is caught between the car door and the car entrance/exit frame.

Further, in the embodiments shown in FIGS. 3 to 6, the detection device 10 is a photoelectric device, that is, a non-contact type detector, so there is no direct or mechanical contact action when the passenger 90 passes, and the movement of the passenger is not hindered. do not have.

Furthermore, since only a small opening through which the light beam 11 passes is exposed in the mounting portion of the detection device 10, the beauty of the area around the entrance and exit is not spoiled.

Furthermore, it is clear that similar effects can be obtained even if the detection device 10 in the embodiments shown in FIGS. 3 to 6 utilizes energy waves such as electromagnetic waves and ultrasonic waves.

As explained above, the present invention provides a detection device consisting of a non-contact detector at the entrance/exit of an elevator, generates an electric signal when a passenger approaches the entrance/exit door abnormally, and uses this to operate the door. and also display this control,
Further, the operation of the door is controlled, and the elevator is operated according to a command from the nearest floor operation command device after a predetermined period of time has elapsed.

As a result, it is possible to prevent accidents such as passengers being injured due to carelessness when doors are opened, by using a device that operates without touching passengers, and also to display abnormalities in the elevator due to the operation of the detection device, By later making the elevator respond to commands from the nearest floor operation command device, problems occurring during abnormalities can be resolved.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional elevator landing, and Figure 2 is a front view of a conventional elevator.
3 is a front view of the elevator hall showing an embodiment of the present invention, and FIG. 4 is a sectional view taken along the line ■-■ in the figure.
5 is a sectional view taken along the line V--IV in FIG. 4, FIG. 6 is a circuit diagram of the main part of the elevator stopping on the third floor. 1.1'... Door of landing, 3... Entrance/exit frame, 10... Detection device, 31F to 33F; 41F
~43F... Coil, 51... Drive machine, 52... Alarm, 53... Notifier,
54...Nearest floor operation command device.

Claims (1)

[Scope of Claims] 1. A driving machine installed in a passenger car to open and close the door of the car and the door of the landing where the car is stopped, and a non-contact detector, a detection device installed near at least one of the doors to detect abnormal approach of a passenger when the door is closed and generate an electrical signal; and a detection device for preventing the door opening operation of the driving machine in response to the electrical signal. Elevator with device - safety device. 2. A drive machine installed in the car to open and close the car door and the landing door where the car is stopped, and a non-contact detector near at least one of the car door and the landing door. a detection device installed in the door that detects an abnormal approach of a passenger when the door is closed and generates an electric signal; a device that prevents the driver from opening the door in response to the electric signal; an elevator door safety device comprising: a display device activated in response to the door to indicate that the door is in an unopenable state; 3. A drive device installed in a car that opens and closes the car door and the landing door where the car is stopped, and a non-contact detector near at least one of the car door and the landing door. a detection device installed in the door that detects an abnormal approach of a passenger when the door is closed and generates an electric signal; a device that prevents the driver from opening the door in response to the electric signal; an elevator door comprising: a timed response device that is energized by the timer to operate after a predetermined time period has elapsed; and a nearest floor operation command device that is energized by the operation of the timer response device to drive the car to the nearest floor. Safety device.