JPH11324518A - Double doors - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door capable of being opened and closed freely on both inner and outer sides by a simple structure. SOLUTION: This is double doors capable of being opened and closed freely on both inner and outer sides. A pair of movable door stops 4 and an electromagnet 5 are provided in a frame 3, and a spring 6 is fixed on a rear surface of the movable door stop 4. When the door 1 is closed, the electromagnet 5 is opened, and the movable door stop 4 is pushed out of the frame 3 due to gravity of the movable door stop 4 and spring force so that it adheres closely on the door 1. When the door 1 is opened, the movable door stop 4 is attracted to the frame 1 by the electromagnet 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire door which is installed in a narrow space such as an evacuation staircase and can be opened and closed on both inside and outside.

[0002]

2. Description of the Related Art Conventional fire doors are stipulated by the Building Standards Law so that they can be opened in the evacuation direction on evacuation stairs and the like. Therefore, in each case, by opening to one side, that is, to the narrow stairs side in the evacuation direction, the movement of the evacuees on the stairs is rather hindered, and the doors themselves are not sufficiently opened, resulting in safety in an emergency. There was a problem.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a door which can be opened and closed on both inside and outside by a simple structure.

[0004]

A door which can be opened and closed on both inner and outer sides, and a pair of movable doors 4 and an electromagnet 5 in a frame 3 are provided.
A spring 6 is fixed to the back of the movable door 4 and the electromagnet 5 is opened when the door 1 is closed, and the movable door 4 is pushed out of the frame 3 by the gravity and spring force of the movable door 4. A double door, characterized by a structure in which the movable magnet contact 4 is drawn into the frame 1 by the electromagnet 5 when the door 1 is opened when the door 1 is opened.

[0005]

Embodiments of the present invention will be described below with reference to the drawings.

<A> Overall Configuration FIG. 1 is a plan view of a double door according to the present invention, and FIG. 2 is a longitudinal sectional view thereof. A pair of movable doors 4 and an electromagnet 5 provided in the frame 3 and a spring 6 fixed to the back of the movable doors 4
It consists of.

<B> Moving Door Contact The moving door contact 4 is made of a metallic material actuated by the electromagnet 5, and is provided as a pair on both sides of the thickness of the door 1. Therefore, the fireproof and smokeproof performance of the door 1 can be improved. Spring 6 is fixed to the back of movable door 4 and door 1
When the door is closed, the magnetic force is released, the movable door is pushed out of the frame 3 by its own weight of 4 and the spring force, and the door is in close contact with the door 1. When the door 1 is opened, the movable door stop 4 is drawn into the frame 3 by the magnetic force of the electromagnet 5 and can be stored.

<C> Electromagnet The electromagnets 5 provided in the frame 3 are located on the back surfaces of the pair of movable doors 4, respectively, and have a function of moving the movable doors 4 in and out of the frame 3 by their magnetic force.

<D> Door The door 1 according to the present invention has a structure in which a pair of recesses 7 are provided on both sides (both ends) of its thickness, and four doors per movable door can be stored.

[0010]

The use of the double door according to the present invention will be described below.

<A> Closing the Door In FIG. 1, the magnetic force of the electromagnet 5 is released by moving the door 1 from the open state to the closed position (the position indicated by the dotted line), and the movable door 4 has its own weight and spring force. 3 is pushed out of the door 3 and the movable door stopper 4 comes into close contact with the recess 7 of the door 1 and
Is closed. That is, the magnetic force of the electromagnet 5 senses whether the door 1 is opened or closed, so that the magnetic force is reversed at the time of closing and opening, and the movement of the movable door 4 is controlled.

<B> Opening the Door In FIG. 2, when the door 1 is moved from the closed state to the open state, the movable door stop 4 is stored in the frame 3 by the magnetic force of the electromagnet 5. Is released. Since a pair of movable door stops 4 are provided on both sides (both ends) of the thickness of the door 1, the opening and closing of the door 1 can be opened and closed both inward and outward. Further, since a pair of movable doors 4 are provided, the fireproof and smokeproof performance of the door 1 can be improved.

[0013]

Since the present invention has been described above,
The following effects can be obtained. <B> Because the door stop is a movable structure that senses the magnetic force of the electromagnet, the door can be opened and closed both inside and outside,
The evacuation stairs can be opened and closed not only on the narrow side of the evacuation direction but also in the opposite direction, so that evacuees on the stairs can be safely evacuated even in an emergency without hindering the movement of the evacuees. <B> Since a pair of door stops are installed on both sides of the thickness of the door, it is possible to improve the fire prevention and smoke shielding performance of the door.

[Brief description of the drawings]

FIG. 1 is a plan view of a double door according to the present invention.

FIG. 2 is a longitudinal sectional view of the same.

Claims (1)

[Claims] 1. A door which can be opened and closed on both inside and outside sides, wherein a pair of movable door stops and an electromagnet are provided in a frame, a spring is fixed to the back surface of the movable door, and the electromagnet is opened when the door is closed. The double door is characterized in that the movable door hit is pushed out of the frame by the gravity and spring force of the movable door and comes into close contact with the door, and when the door is opened, the movable door hit is drawn into the frame by the electromagnet.