JP2646955B2 - Entrance door with fire damper for apartment house - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an entrance door for an apartment house having a ventilation hole and a fire damper.

[0002]

2. Description of the Related Art There are many apartments for families and singles.
In particular, in the case of a family apartment with a living area of more than 13 tsubo, these rooms are arranged on the window side to secure the lighting area of the living room, Japanese room, etc., and kitchens, toilets, bathrooms that require exhaust air Are often placed in the center of the house.

In this case, when an exhaust fan for a kitchen, a toilet, a bathroom, or the like not facing a window is operated to exhaust air, the inside of the house becomes a negative pressure with respect to an outside air pressure. Conventionally, external air is taken in by installing an air supply sleeve (with a register) on the outer wall facing the living room, and the air in the house is exhausted from an exhaust fan.

[0004] For this reason, the outside air directly enters the room where the air supply sleeve is installed by the operation of the exhaust fan, and the temperature of the room decreases in winter and the humidity of the room increases in summer and during the rainy season. Invites environmental degradation.

The present invention proposes an entrance door with a fire damper that does not require introduction of outside air from a living room.

[0006]

The entrance door has a ventilation opening for introducing outside air to the outside of the room, and an opening cover for normally closing the ventilation opening on the room side of the ventilation opening is supported to be openable and closable. A fire damper that closes the ventilation opening at the time of high temperature is supported on the inside so that it can be opened and closed freely, but in the present invention in a state where the ventilation opening at normal times is closed by opening a punching hole of a size having insect repellent effect on the opening lid It is connected to a fire damper lock arm that keeps the fire damper open in normal times, a fire damper closing spring that pulls in the direction to release the lock to the fire damper, and a temperature fuse. By connecting to the connecting arm, the fire damper that is normally open is closed at high temperatures.

A connecting arm connected to the fire damper closing spring and the thermal fuse rotates in conjunction with the fire damper lock arm and is connected to a rotary connecting arm rotatably supported by the entrance door. The thermal fuse is located on the opposite side of the fire damper closing spring with respect to the pivot connection arm.

In the open state, the fire damper is always urged to the closing side by the fire damper spring while being locked by the fire damper lock arm rotatably supported by the entrance door.

When the entrance door is placed at a high temperature and the connecting arm is separated from the thermal fuse, the lock of the fireproof damper lock arm to the fireproof damper is released by the fireproof damper closing spring, and the fireproof damper is released by the fireproof damper spring. Closes. Even after the fire damper is closed, it is urged by the spring for the fire damper, so that it stays closed and does not open unless pushed from the outside of the ventilation opening.

[0010]

FIG. 1 shows a ventilation port of an entrance door according to the present invention in a case where a ventilation port for introducing outside air also serves as an opening for a mail box.
FIG. 2 shows a ventilation port of a conventional entrance door.

The ventilation opening is formed in the outdoor door panel 1,
On the indoor side of the ventilation opening, an opening lid 3 that closes the ventilation opening during normal times is supported to be freely openable and closable. Although not shown, a punching hole having a size that has an insect repelling effect is formed in the opening lid 3, and outside air is introduced from the punching hole in normal times.

Outside air flows in from the punched holes formed in the opening lid 3 when the exhaust fan in the room normally operates. However, since the inflowing outside air flows into the exhaust room through the entrance space, the outside air flows directly into the living room. It does not flow.

The opening lid 3 is supported by the opening lid mounting portion 5 of the opening lid mounting hardware 4 located above the ventilation opening.
Is always urged toward the closing side indicated by the arrow A. It is opened in the direction of arrow C in response to the force at the time of insertion of mail, newspaper, etc. as indicated by arrow B, but returns to the closed state after insertion. The opening lid 3 contacts the opening lid stopper 7 in the closed state. In the drawing, reference numeral 6 denotes an outdoor cover.

On the indoor side of the opening cover 3, a fire damper 8 for closing a ventilation opening at high temperature is supported so as to be openable and closable. The fireproof damper 8 is supported by a fireproof damper mounting shaft 10 of a fireproof damper mounting hardware 9, and is always urged toward a closed side indicated by an arrow D by a fireproof damper spring 11 having one end fixed to the fireproof damper 8. In the figure, reference numerals 12 and 13 denote spring fixing holders for the fire protection damper for fixing the spring 11 for the fire protection damper at a predetermined position.

On the side of the fire damper spring 11 of the fire damper 8, a bolt metal fitting 14 to which a fire damper lock bolt 15 is attached so as to be freely adjustable is fixed, and the fire damper lock arm shaft of the indoor side door panel 2 of the entrance door is fixed.
One end 17 of the fireproof damper lock arm 16 pivotally supported by 19 is engaged with the fireproof damper lock bolt 15, so that the fireproof damper 8 is kept open against the fireproof damper spring 11 in normal times.

A rotation connecting arm 22 is arranged below and parallel to the fire protection damper lock arm 16, and the fire protection damper lock arm 16 rotates in conjunction with the rotation of the rotation connection arm 22. In the drawing, the rotation connection arm 22 is pivotally supported on the rotation connection arm shaft 21 of the indoor side door panel 2, the connection arm 20 is rotatably connected to one end of the rotation connection arm 22, and a fire damper is connected to the connection arm 20. The other end of the lock arm 16
Although the fire prevention damper lock arm 16 is linked to the rotation connection arm 22 by rotatably engaging 18,
The mechanism for rotating the fire prevention damper lock arm 16 in conjunction with the rotation of the rotation connection arm 22 is not limited to this.

A connecting arm 24 connected to a thermal fuse 25 is engaged with the other end 23 of the rotating connecting arm 22. The other end 23 of the rotating connecting arm 22 also has a fire damper lock arm.
A spring 27 for closing the fire damper, which pulls the rotary connecting arm 22 in a direction to release the lock of the 16 to the fire damper 8, is engaged. The thermal fuse 25 and the fire damper closing spring 27 are located on opposite sides with respect to the pivot connection arm 22. In FIG. 1, a spring connection arm 28 is connected to one end of a fire prevention damper closing spring 27, and the spring connection arm 28 is engaged with the other end 23 of the rotation connection arm 22.

The thermal fuse 25 is engaged with or fixed to a thermal fuse fixing arm 26 fixed to the entrance door, and is welded to the connecting arm 24. The temperature fuse 25 is welded to the connection arm 24, and the connection arm 24 engages with the rotation connection arm 22, so that the rotation connection arm 22 and the fireproof damper lock arm 16 interlocked via the connection arm 20 are normally operated. Standing up, one end 17 of the fire protection damper lock arm 16 is engaged with the fire protection damper lock bolt 15, and the fire protection damper 8 is kept open.

The other end of the fireproof damper closing spring 27 is connected to a spring connecting arm 29 engaged with a suitable member such as the fireproof damper mounting shaft 10, and the fireproof damper closing spring 27 is pulled by the connecting arm 24. Thus, it is maintained in a state of being extended in normal times.

The thermal fuse 25 is blown when placed in a high temperature when a fire occurs inside or outside the house, and at the same time as the blow, the other end 23 of the rotary connecting arm 22 is connected to a fireproof damper closing spring 27. Pulled, the rotation connection arm 22 rotates around the rotation connection arm axis 21. Rotating connection arm 22
The fire protection damper lock arm 16 linked by the connecting arm 20 also rotates with the rotation of the arm, and one end 17 thereof is released from the fire protection damper lock bolt 15.

When the fire damper lock arm 16 is released from the fire damper lock bolt 15, the fire damper 8
Is rotated in the direction of the arrow E by the restoring force of the spring D for the fire protection damper in the direction of the arrow D to close the ventilation opening. The fire protection damper 8 comes into contact with the fire protection damper stopper 30 and stops.

[0022]

According to the present invention, a punching hole having an insect repelling effect is formed in an opening lid which is openably and closably supported on the indoor side of a ventilation opening, and a fireproof damper which is openably and closably supported on the indoor side is held in an open state. Because the spring for closing the fire protection damper that pulls in the direction to release the lock to the fire protection damper and the connection arm connected to the temperature fuse are connected to the rotating connection arm that is linked to the fire protection damper lock arm,
The fire damper, which is open in normal times, can be closed at high temperatures while allowing outside air to be introduced in normal times.

Since the fire damper is still urged by the fire damper spring even after it is closed, it remains closed and will not open unless pushed from the outside of the ventilation opening.

Since the punching hole formed in the opening cover has a size that has an insect repellent effect, it is possible to prevent insects from entering during normal times.

Further, since the outside air flowing from the punching holes of the opening lid does not flow directly into the living room, a decrease in temperature and an increase in humidity in the living room are suppressed.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing a ventilation port portion of an entrance door of the present invention.

FIG. 2 is a longitudinal sectional view showing a ventilation port portion of a conventional entrance door.

[Explanation of symbols]

1 ... outdoor door panel, 2 ... indoor door panel, 3
... Opening lid, 4 ... Opening lid mounting hardware, 5 ... Opening lid mounting part, 6 ... Indoor side cover, 7 ... Opening lid stopper,
8 Fire damper 9 Fire damper mounting hardware 10
… Fire damper mounting shaft, 11… Spring for fire damper, 12, 13… Spring fixing holder for fire damper, 14… Bolt bracket, 15… Fire damper lock bolt, 16… Fire damper lock arm, 17 ... One end of the fire damper lock arm, 18 ... The other end of the fire damper lock arm, 19 ... Fire damper lock arm shaft, 20
... connecting arm, 21 ... rotating connecting arm shaft, 22 ... rotating connecting arm, 23 ... the other end of the rotating connecting arm, 24 ... connecting arm, 25 ... thermal fuse, 26 ... thermal fuse Fixed arm, 27 …… Spring for closing fire damper, 28, 29
… Spring connection arm, 30… Stopper for fire damper.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuharu Kasahara 4-51, Ota-cho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Kashima Construction Co., Ltd. Yokohama Branch Japanese Utility Model Showa 59-159450 (JP, U) Japanese Utility Model Showa 60-180455 (JP, U)

Claims (1)

(57) [Claims] 1. A ventilating port for introducing outside air to the outside of the room,
An entrance door for an apartment house where an opening lid that normally closes the ventilation port is supported openably and closably on the indoor side of the ventilation port, and a fire damper that closes the ventilation port when the temperature is high is openably supported on the indoor side of the opening lid. In the opening lid, a punching hole of a size that has an insect repellent effect is opened, and the fire damper is open,
While being locked to the fireproof damper lock arm rotatably supported by the entrance door, the fireproof damper spring is always urged to the closing side by the spring, and rotates in conjunction with the fireproof damper lock arm to rotate the entrance door. The fireproof damper closing spring, which is pulled in a direction to release the lock of the fireproof damper lock arm to the fireproof damper, is connected to the rotatable connecting arm rotatably supported at An entrance door with a fire damper for a dwelling apartment, which is connected to a connecting arm connected to a thermal fuse located on the opposite side of the damper closing spring.