JP2000045649A - Fire door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify mounting work by omitting an installation space, and contrive cost down, by arranging a lattice door on a recessed part formed on a back of a fire door to form freely to open and close the fire door and the lattice door at their rotary shafts in which rotational centers are similarly centered as an axis. SOLUTION: A recessed part is formed on a back of a fire door, a lattice door 2 is arranged on the recessed part. Rotary shafts 11, 11 are protruded from an upper surface and a right edge of a lower surface of the fire door to journal by bearings provided in an installing frame of wall surface 3 at a position corresponding to the rotation shaft 11. Moreover, the rotation shafts 21, 21 protruded from an upper surface and a right edge of a lower surface of the lattice door 2 are journalled by bearings in the fire door at a corresponding position. The lattice door 2 is at its rotation shaft 21 as the axis formed freely to open and close separately from the fire door, and only the fire door or the lattice door 2 can be opened and closed. Hereby, it need not be provided the fire door and the lattice door separately, mounting work ends by one time, and it is possible to contrive cost down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire door mounted on an opening and closing portion of a fire wall, and more particularly to a fire door and a lattice door integrally formed.

[0002]

2. Description of the Related Art Conventionally, a fire door, which is openably and closably attached to an opening and closing portion of a fire wall, is normally open so that people can pass through it. By operating the door knob or the like to bring it into the closed state, the flame is prevented from entering other areas.

[0003] In a psychiatric hospital, a welfare facility for the aged, and the like, it may be necessary to provide an off-limits area in which patients and the aged are not allowed to enter. In such a case, in order to prevent entry into the no-go area, it may be dealt with by providing a management lattice door which is normally closed and cannot be opened and closed freely by a patient or the like.

[0004]

However, if the fire door and the lattice door are separately provided, the installation space for each is required, and the mounting work must be performed separately, which increases the cost. There's a problem. Also,
The fire door is normally open, while the management lattice door is normally closed, so a single door can be used for both. It was not possible to do so, and after all fire doors and lattice doors had to be provided separately.

Accordingly, the present invention provides a fire door and a lattice door which are integrally formed and can be freely opened and closed.
Without the need for each installation space,
An object of the present invention is to reduce the cost by allowing the mounting operation to be performed at one time.

[0006]

In order to achieve the above-mentioned object, a fire door according to the present invention comprises a fire door having a recess formed on a back surface thereof, and a lattice door disposed in the recess of the fire door. The fire door and the lattice door are each rotatable about a rotation axis having the same rotation center.

[0007] This eliminates the need for a space for installing the fire door and the lattice door, and also allows the mounting operation to be performed only once, thereby reducing costs.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a fire door according to the present invention will be described below with reference to the drawings. In the present invention, a grid door 2 is integrated with a fire door 1 and each is configured to be openable and closable.

The fire door 1, as shown in FIGS. 1 and 2, is a square, iron-made fire-resistant door, and is attached to an attachment frame (not shown) provided on the wall surface 3. .
1 and 2 show that the fire door 1 is open and only the lattice door 2 described later is closed.

At the right end of the upper surface and the lower surface of the fire door 1, rotating shafts 11, 11 protrude. The rotating shaft 11 is supported by a bearing (not shown) provided in a mounting frame of the wall surface 3 at a position corresponding to the rotating shaft. Accordingly, the fire door 1 is rotatable about the rotation axis 11 by 90 degrees from the current position shown in FIG. 2 to the position where the lattice door 2 is located.

As shown in FIG. 2, a key portion 41, which is a part of a locking device, protrudes from the center of the right end of the rear surface of the fire door 1. When the fire door 1 is closed, the key portion 41
Can be fitted to the key receiving portion 42 provided in the mounting frame.

As shown in FIG. 3, a concave portion is formed on the rear surface (rear side in the drawing) of the fire door 1, and a lattice door 2 is provided in the concave portion. As shown in FIG. 1, the lattice door 2 has a rectangular frame attached with a lattice.
This is to prevent patients and the elderly from freely entering and leaving restricted areas at mental hospitals and welfare facilities for the elderly. Rotation shafts 21 and 21 project from right ends of the upper surface and the lower surface of the lattice door 2. The rotating shaft 21 is supported by a bearing (not shown) provided in the fire door 1 at a position corresponding to the rotating shaft. As shown in FIG. 1, the rotation shaft 21 has the same rotation center as the rotation shaft 11 of the fire door 1 described above. Therefore, the lattice door 2 can be opened and closed independently of the fire door 1 around the rotation shaft 21. That is, only the lattice door 2 can be opened and closed, and only the fire door 1 can be opened and closed.

A key portion 51, which is a part of the locking device, protrudes from the center of the rear end of the lattice door 2 at the right end. The key 51 is
When the lattice door 2 shown in FIG. 1 is closed, it can be fitted to a key receiving portion 52 provided in the mounting frame of the wall surface 3.

Next, the operation of the present invention will be described. In normal times, that is, when no fire has occurred, FIGS.
As shown in the figure, only the lattice door 2 is in the closed state,
Patients and the elderly are not allowed to enter restricted areas. The lattice doors 2 are locking devices 51 and 52 so that a patient or the like cannot normally open the lattice door 2 freely.
However, in an emergency, the door can be unlocked by operating an operation switch provided in a separate room, and the lattice door can be opened.

When a fire occurs, as shown in FIG. 3, the fire door 1 is closed in addition to the lattice door 2 to prevent a disaster or the like from entering the adjacent room. Fire door 1
Can be manually closed in the event of a fire by manipulating a handle (not shown).

The fire door 1 may not be closed manually, but may be automatically closed by a separately provided control device in conjunction with a fire alarm. Fire door 1
May be made of any material as long as it has fire resistance, and is not limited to the above-mentioned iron-made material, and may be a material obtained by subjecting flame-retardant wood to heat insulation.

[0017]

As described above, according to the present invention, it is not necessary to separately install the fire door and the lattice door, and the installation work can be completed only once, so that the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a lattice door is closed and a fire door is opened.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a cross-sectional view showing a state where both a lattice door and a fire door are closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fire door 11, 21 Rotation axis 2 Grid door

Claims (1)

[Claims] 1. A fire door having a concave portion formed on a back surface thereof, and a lattice door disposed in the concave portion of the fire door, wherein the fire door and the lattice door have a rotation axis having the same rotation center as an axis. A fire door characterized in that each can be opened and closed freely.