JPH0236116B2 - EREBEETANORIBADOASOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an elevator landing door device equipped with a door with a window, and more particularly to an elevator landing door device equipped with a fire door.

[Prior art]

FIGS. 1 and 2 show a conventional elevator landing door device equipped with a door with a window.
In the figure, 1 is a three-sided frame constructed in the elevator landing, 2 is a door device for the landing provided on the hoistway side of this three-sided frame 1, 3 is a window-equipped door consisting of two butt sliding doors, and 4 is each window. 5 is a door hanger provided at the upper end of each door 3 with a window, 6 is a hanger roller provided on this door hanger 5, and 7 is a window glass with wire mesh attached to the door 3 with a window. A rail 8 that rolls on the upper surface to guide the opening and closing of the window-equipped door 3 is stretched between a pair of pulleys 9, and is connected to one door hanger 5 at the lower half, and is connected to the other door hanger 5. An interlocking rope that is connected at the upper half and moves both windowed doors 3 in opposite directions, 10 is a leg provided at the lower end of each windowed door 3, 11 is a sill, and 12 is the leg 10. The groove 13 in the sill that guides the door 3 is a door engagement device that is provided on the hoistway side surface of one door 3 with a window and engages with a door with a window of a car (not shown).

In the above configuration, when a car (not shown) stops at the three-sided frame 1 position of the landing, the window-equipped door 3 of the landing and the window-equipped door of the car face each other, and are used for crime prevention or observation of the elevator.

By the way, like this, there are 4 windows on the landing door.
If the door 3 is equipped with a window, it will be treated as a class B fire door under the Building Standards Act, and there is a drawback in that the construction side will have to provide a fire protection section around the elevator landing.

[Summary of the invention]

This invention was made with the aim of eliminating such drawbacks, and includes installing a Class A fire door between the three-sided frame of the landing and a door with a window, and closing this fire door by the operation of a fire detection device. , and by providing an engaging piece on the fire door so that the door with a window and the fire door can be opened and closed as a unit, it is possible to realize a door with a window equipped with a fire door that is extremely safe, and prevents passengers from becoming trapped inside the car. The present invention proposes an elevator hall door device that allows easy rescue even when the vehicle is stolen.

[Embodiments of the invention]

3 to 6 show an embodiment of the present invention, and the same reference numerals as in FIGS. 1 and 2 indicate the same or corresponding parts. 14 is a fire prevention door provided between the three-sided frame 1 and the door with window 3 and consisting of two butt sliding doors, 5a is a door hanger attached to the upper end of each fire prevention door 14, and 6a is a door hanger 5a. provided hanger roller,
7a is a rail on which the hanger roller 6a rolls on the upper surface to guide the opening and closing of the fire door 14; 8a is a rail stretched between a pair of pulleys 9a and connected to one door hanger 5a at the lower half, and the other. 10a is a leg attached to the lower end of both fire doors 14, and 12a is a sill 11. a door-closing weight 15 attached to the end of the interlocking rope 8a to constantly bias both fire doors 14 in the closing direction;
Reference numeral 16 indicates a weight guide that guides the lifting and lowering of the door closing weight 15, and 17 indicates a weight guide that holds the interlocking rope 8a and holds both fire doors 14 in the open state against the biasing force of the door closing weight 15 during normal operation. It is an interlocking rope holding device that holds the interlocking rope 8a and, in the event of a fire, releases the grip on the interlocking rope 8a by operating a fire detection device (not shown) such as a heat detector or a fire alarm.
The door 4 is closed by the weight of the door closing weight 15. 18
is an engaging piece provided at the outer end of each fire door 14, and after the fire door 14 is closed, it engages with the windowed door 3 to open and close both doors 3 and 14 as one unit.
A case 19 houses the rail 7, interlocking rope 8, and pulley 9, and is installed on the back side of the three-sided frame 1. Reference numeral 20 denotes a window-equipped door on the car side, which is engaged by the door engaging device 13 when the car stops at the landing, and is opened and closed integrally with the window-equipped door 3 of the landing.

In the above configuration, under normal conditions, the fire door 14
is held in an open state by an interlocking rope holding device 17, and is used for security purposes or for viewing the elevator, similar to conventional window-equipped door devices.

On the other hand, when a fire occurs, the interlocking rope holding device 17 that grips the interlocking rope 8a is released by the operation of a fire sensing device (not shown). As a result, the fire door 14 is closed by the weight of the door closing weight 15. After the fire door 14 is closed, the engaging piece 18 connects the window door 3 and the fire door 14.
The door opens and closes as one unit.

Thus, a window-equipped door 3 equipped with a safe fire door 14 can be realized, and even if a passenger is trapped in the car, it can be easily rescued.

In the above embodiment, the door closing weight 15 is used as the door closing mechanism for closing the fire door 14, but a spring or the like may be used instead.

Furthermore, instead of holding the interlocking rope 8a by the holding device 17 to maintain the fire door 14 in the open state, the same effect can be obtained by holding the fire door 14 or the door closing weight 15.

〔Effect of the invention〕

As explained above, in this invention, a fire door is provided between a three-sided frame and a door with a window, and this fire door is closed by the operation of a fire detection device, so that a window equipped with a safe fire door can be installed. It is possible to realize doors with attached doors, and there is no need to provide a fireproof partition around the elevator hall. Furthermore, after the fire door is closed, the door is opened and closed together with the window door, so that even if a passenger becomes trapped inside the car, it can be easily rescued.

[Brief explanation of drawings]

Figures 1 and 2 are schematic diagrams illustrating conventional elevator hall door devices, Figures 3, 4, and 5.
FIG. 6 is a schematic diagram illustrating an embodiment of the present invention. 1: Three-sided frame, 3: Door with window, 4: Window glass,
8, 8a: Interlocking rope, 9, 9a: Pulley, 1
4: Fire door, 15: Door closing weight, 16: Weight guide, 17: Interlocking rope holding device, 18: Engagement piece. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A landing door with a window installed on the hoistway side of the three-sided frame of the landing, a fire door installed between the three-sided frame and the landing door with window, and a door that constantly biases this fire door in the closing direction. a closing mechanism, a fire door holding device that holds the fire door in an open state against the biasing force of the door closing mechanism and releases this holding by the operation of a fire detection device; An elevator landing door device comprising: an engaging piece that opens the fire door in conjunction with the opening operation of the windowed landing door.