JPS6211899Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of an elevator door device.

Generally, an elevator door device is such that a locked landing door is unlocked via the car when the car stops landing, and the door is opened together with the car door. Further, the locking device on the door of the landing can be unlocked from the landing by a specific person such as an elevator manager using a key for maintenance of the elevator.
For this reason, an accident may occur in which a manager or the like accidentally falls into the elevator hoistway by unlocking and opening the door of a landing where the car is not stopped.

This invention solves the above-mentioned drawbacks by providing an elevator door device that detects whether a car is stopped at a landing when the door of the landing is unlocked.

An embodiment of this invention will be described below with reference to FIGS. 1 to 3.

In the figure, 1 is an elevator hoistway, 2 is a landing provided there, 3 is a door to the landing, 4 is a well-known locking device for locking this, and 5 is a keyhole that passes through the door 3 of the landing. , 6 is a key rod that is manually inserted into the keyhole 5 when needed, 6a is a collar provided on the key rod 6, 7 is a car that goes up and down the hoistway 1, 8 is a car door, and 9 is a car door. A detection device provided in the door 8, 10 is an actuating body that constitutes this, and is arranged corresponding to the keyhole 5, the middle part is pivotally connected to the car door 8, and the longitudinal end is arranged in the vertical direction. There is. Reference numeral 11 projects from the car door 8 and opposes the lower end of the operating body 10 to prevent it from rotating in the counterclockwise direction in FIG. A biasing body consisting of a compression coil spring held by the door 8 and the actuating body 10 biases the actuating body 10 in the counterclockwise direction in FIG. Reference numeral 13 denotes a switch which is attached to the door of the car and whose actuating part is in contact with the actuating body 10;
14 is a display device provided in the hall 2 and includes a lamp, a buzzer, etc., and (+) and (-) are power supplies.

That is, when the car 7 is stopped at the landing 2 and the key stick 6 is inserted into the keyhole 5 to unlock the landing door 3 until the collar 6a reaches the surface of the landing door 3, the operating body 10 is pressed by the insertion end of the key stick 6. (In addition, as shown in Fig. 2, the keyhole 5
Since the link mechanism of the lock device 4 is located on the side of the door, the key rod 6 is simply inserted, so the lock device 4 is not unlocked by the key rod 6 at this point, and the door 3 of the landing is opened. I'm in a state where I can't. ) As a result, the actuating body 10 is displaced clockwise against the biasing force of the biasing body 12, so the contact 13a is closed and is indicated by the (+)-13a-14-(-) circuit. Device 14 is energized. Therefore, it is displayed that the car 7 is stopped at the landing 2. Further, when the car 8 is not stopped at the landing 2, the display device 14 does not operate even if the key stick 6 is inserted into the keyhole 5, so that it can be reliably determined that the car 8 is not present. In this way, it is possible to safely and reliably determine whether the car 7 is stopped at the landing 2 by simply inserting the key stick into the keyhole, without unlocking the door of the landing to make it openable. As a result, accidents that occur when attempting to open the door 3 of the landing can be prevented.

As explained above, this invention is such that the car is equipped with a detection device that operates via the key rod that unlocks the lock device of the landing, and the display device is operated by the operation of this detection device. I have to. Since the detection device is installed on the car in this way, the display device cannot be operated unless the car is actually stopped on that floor.In other words, the presence of the car can be directly and physically confirmed using the key stick. It is extremely safe.
Additionally, since the detection device is installed on the car and not on the building side such as the landing or hoistway, a single detection device can detect the presence of the car on all floors, no matter how many floors there are. It is something that can be checked and can be installed at an extremely low cost. Furthermore, with this invention, the presence of a car can be confirmed when the key stick is inserted into the keyhole before unlocking the landing door locking device, that is, when the landing door cannot be opened manually, so there is no need to worry about opening the landing door. It is extremely safe as there is no opening.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of the main part of an elevator system showing an embodiment of the elevator door system according to this invention, Fig. 2 is an enlarged front view of the main part of the landing corresponding to Fig. 1, and Fig. 3 1 is a main part electrical circuit diagram corresponding to FIG. 1. 1... Hoistway, 3... Landing door, 4... Lock device, 6... Key stick, 7... Car, 8... Detection device,
14...Display device. Note that the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A locking device for locking a landing door provided in a hoistway, which can be unlocked by operating a key stick inserted into a keyhole of the hoistway, and a locking device for locking a door of a landing provided in a hoistway, and a locking device for locking a door of a landing installed in a hoistway, which can be unlocked by operating a key stick inserted into a keyhole of the hoistway, a detection device which is provided at a position opposite to the keyhole of the landing door and which operates by being pressed by the keystick when the keystick is inserted into the keyhole; and the detection device operates through the operation of the detection device. An elevator door device equipped with a display device.