JPH0731775U - Smoke control device for elevator doors - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a smoke-shielding device for an elevator door, which can minimize invasion of smoke in the hall or smoke containing toxic gas into the hoistway. To do. [Structure] A first brush piece that is attached to the end of the landing door 1 so as to extend in the vertical direction and that is installed vertically to the opening and closing direction of the door, and a first brush piece when the landing door is fully closed.
No. 2 brush piece attached to the place where it comes into contact with the brush piece, and it is attached so as to extend in the same direction as the opening and closing direction of the door so that it always comes into contact with the upper end of the hall door 1. And a third brush piece installed vertically.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a smoke shielding device for an elevator door.

[0002]

[Prior art]

 Conventionally, as described in Japanese Patent Application Laid-Open No. 62-240286, as this type of device, an entrance / exit frame provided at an entrance / exit of an elevator hall and a reciprocating motion along the back surface of the entrance / exit frame, the above-mentioned entrance / exit And a sliding door for opening and closing the door, and a protective piece on the rear surface of the doorway frame that narrows the gap with the sliding door and is elastically deformed easily, and a metal protective member that operates with a shape memory alloy operating member. It is known that the metal protective member is usually separated from the sliding door and, in the event of a fire, it is moved closer to the sliding door by the operation of the actuating member so as to narrow the gap between the sliding door and the sliding door.

[0003]

[Problems to be solved by the device]

 However, in the above conventional device, since the metal protective piece is operated by the actuating member made of the shape memory alloy in case of fire, the metal protective piece is actuated unless the heat from the fire reaches the operating member. That is, the gap between the door and the three-sided frame cannot be narrowed. In addition, when a fire occurs, a large amount of smoke often flows through the corridor, and when only the smoke fills the landing, the actuating members do not operate and the smoke and the three-way It will enter the hoistway through the gap with the frame.

It is an object of the present invention to provide a smoke-shielding device for elevator doors, which can minimize the ingress of smoke in halls and smoke containing toxic gas into the hoistway. .

[0005]

[Means for Solving the Problems]

 The purpose of the above is to install a landing door at the boundary between the elevator hall and the hoistway, and in the elevator door smoke shielding device in which the hall and the hoistway are isolated by the hall door, The first brush piece, which is attached to the end so as to extend in the vertical direction and is installed vertically to the opening and closing direction of the door, comes into contact with the first brush piece when the landing door is fully closed. The second brush piece attached to the place where the door is opened and the second brush piece are attached so as to extend in the same direction as the opening and closing direction of the landing door so that they are always in contact with the upper end of the landing door, and are installed vertically to the opening and closing direction of the door. It is achieved by providing the above-mentioned third brush piece.

[0006]

[Action]

 As described above, the third brush piece constantly contacts the upper end of the landing door, closes the gap with the upper part of the three-way frame, and when the landing door is completely closed, the first and second brush pieces come into contact with each other. The gap between the door and the three-way frame or wall is almost completely blocked, and it is possible to block smoke, smoke containing toxic gas, etc. from flowing into the hoistway from the landing. In addition, when the first and second brush pieces come into contact with each other due to the opening / closing operation of the landing door and are always performed regardless of the occurrence of fire or smoke, when a fire occurs in a place away from the elevator. However, it is possible to reliably prevent smoke and the like from entering the hoistway.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

1 and 3 are plan sectional views of a main part, FIG. 1 shows a door in a fully closed state, FIG. 3 shows a fully opened state, FIG. 2 is a front view of FIG. 1, and FIG. FIG.

In the figure, 1 is a hall door, 2 A, 2 B, 2 C, 2 D, 2 E is a smoke blocking brush piece, 3 is a hall, 4 is a hoistway, and 5 is a wall that delimits the hall 3 and the hoistway 4. Reference numeral 6 denotes a doorway formed on the wall 5 so as to communicate with the hoistway 4, and 7 indicates a three-way frame attached to the edge of the doorway 6.

Smoke blocking brush pieces 2A, 2B extending in the vertical direction are attached to the ends of the surface of the hall door 1 facing the wall 5, and face the hall door 1 of the three-way frame 7 (or the wall 5). The smoke shielding brush pieces 2C and 2D extending vertically and the smoke shielding brush piece 2E extending in the opening and closing direction of the hall are attached to the surface. The smoke blocking brush pieces 2A to 2D come into contact with each other when the hall door 1 is fully closed (the state shown in FIG. 1). The mounting position is set so that it contacts the upper end. With the above-described structure, the gap G between the hall door 1 and the three-way frame 7 can be almost completely closed when the hall door is fully closed (the state of FIG. 1). As a result, it is possible to minimize the intrusion of smoke generated during a fire and smoke containing toxic gas into the elevator hoistway 4. Since the smoke preventer for the door is installed between the three-way frame 7 of the elevator hall and the hall door 1, as shown in FIG. I can't.

[0011]

[Effect of device]

 As described above in detail, according to the present invention, when the landing door is completely closed, the first and second brush pieces contact each other, and the third brush piece always contacts the upper end of the landing door. By doing so, the gap between the landing door and the three-way frame or wall is almost completely blocked, and it is possible to block smoke, smoke containing toxic gas, etc. from flowing into the hoistway from the landing. The contact between the first and second brush pieces and the contact between the third brush piece and the landing door are performed by opening and closing the landing door, and are always performed regardless of fire or smoke. Therefore, even if a fire occurs in a place away from the elevator, it is possible to reliably prevent smoke and the like from entering the hoistway.

[Brief description of drawings]

FIG. 1 is a plan sectional view of an embodiment of the present invention.

FIG. 2 is a front view of an embodiment of the present invention.

FIG. 3 is a plan sectional view of an embodiment of the present invention.

FIG. 4 is a vertical sectional view of an embodiment of the present invention.

[Explanation of symbols]

 1 Landing Door 2A, 2B, 2C, 2D, 2E Brush Pieces 3 Landing 4 Hoistway 5 Wall 7 Three-way Frame

Claims (1)

[Scope of utility model registration request] 1. A smoke shielding apparatus for an elevator door, wherein a hall door is installed at a boundary between an elevator hall and a hoistway, and the hall door and the hoistway are isolated by the hall door. A first brush piece attached to the end portion so as to extend in the vertical direction and installed vertically to the opening / closing direction of the door, and comes into contact with the first brush piece when the landing door is fully closed. The second brush piece attached to the location is attached so as to extend in the same direction as the opening and closing direction of the landing door so that the second brush piece is always in contact with the upper end of the landing door, and is installed vertically to the opening and closing direction of the door. A smoke shielding device for an elevator door, comprising a third brush piece.