JPS5844237Y2 - Deformable absorption door for buildings - Google Patents

Description

[Detailed description of the invention] This invention relates to a deformation-absorbing door for buildings, and in particular to a structure of the door that can be easily opened even if the door is deformed due to earthquake damage. It is.

Conventional metal doors such as steel doors and aluminum doors have performance requirements such as theft prevention, heat insulation, and sound insulation, and it is no exaggeration to say that no consideration has been given to earthquake damage.

In recent years, the wall structures of buildings in particular have become stronger with concrete walls or steel walls, and once these deform due to a large earthquake, the door itself also deforms and bites into the door frame, making it impossible to open or close. becomes.

Therefore, if a large earthquake occurs while the door is closed, the door may not open and you may not be able to evacuate outside.

This is a life-threatening problem, and especially in high-rise buildings where large numbers of people gather, it can cause situations such as panic and cause serious secondary disasters. It is extremely important to ensure this at least as much as possible.

By the way, in-plane deformation (interstory displacement) of a building during an earthquake
If it is 1/150, 20m/m at 3M (7) floor height
It is generally known that deformation occurs (see Figure 5).

For example, if the height of a door installed at a floor height of 3M is 2M, the maximum deformation value will be 13.3 m/m.

On the other hand, conventional doors have a length of 3 to 4 meters between the vertical frame or the upper frame.
It is customary to provide a gap S of m (see Fig. 6).

Therefore, it is theoretically possible to increase the size of this gap to absorb the deformation to some extent when earthquake damage occurs.

However, as a practical matter, if the gap size is large, it is extremely dangerous in terms of fire prevention, and it not only spoils the aesthetics, but also
There is a risk that someone could insert a crowbar through the gap and open the door, which is undesirable from a security standpoint.

The object of the present invention is to improve the above-mentioned drawbacks, and to provide a deformation absorbing layer at a low cost that can absorb predicted deformation and allow doors to be easily opened in the event of an earthquake.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view thereof.

In the figure, 1 is the vertical frame, 2 is the top frame, 3 is the spelling, and 4
indicates a fire door body with a predetermined thickness.

The door body 4 forms an acute-angled protrusion 8 on the outside of its four peripheral edges 5, which narrows from the front plate 6 to the back plate 7 of the door.

Further, in the above embodiment, a flat portion 9 adjacent to the acute-angled protrusion 8 is formed on the indoor side of the door.

On the other hand, the vertical frame 1, the upper frame 2, the collar 3, etc., which are disposed on the outside of the door body 4 with a small gap therebetween, face the acute-angled protrusion 8, and A tapered surface 10 is formed that narrows from the outside of the room toward the inside of the room.

Further, a flat portion 11 continuous to the tapered surface 10 is formed inside the tapered surface 10, and the flat portion 11 and the flat portion 9 are opposed to each other with a relatively large gap of 7 m/m or more in between.

Furthermore, inside the flat part 11, a door stop 12 is provided one step higher than the flat part.

According to the embodiment of the present invention configured as described above, a relatively large gap is ensured between the door body 4 and the frame except for the gap between the acute-angled protrusion 8 and the tapered surface 10. Due to a large earthquake, the door frame was deformed due to the displacement of the building's floors.
When the clearance of the inclined portion is zero or a force is applied so that the door and the door frame come into close contact with each other, the acute-angled protrusion 8 and the tapered surface 10 form an acute-angled shape, as illustrated in FIG. The protruding portion 8 slides outward (opening side) along the tapered surface 8, and deformation of the door and door frame can be absorbed by the portion with a large clearance (gap).

When opening the door body 4 in such a state in an emergency,
If the door body is pushed outward after the lock is unlocked, the door body can be opened outward with almost no resistance.

Note that if the degree of deformation of the door frame is large, or if the slippage of the door body is suppressed by the hinge or lock bolt d, the top plate 6 of the door may be deformed as shown in Fig. 3. Even in this case, since the contact area between the door 4 and the door frame is small, the door body can be easily pushed open from the inside.

In order to be on the safe side, in the present invention, sliding members made of synthetic resin with high lubricity can be installed as shown by reference numeral 13 in areas that are likely to come into contact during an earthquake.

The example shown in FIG. 4 shows a renovation example in which the present invention is applied to an existing door frame. This shows the case where a new renovated vertical frame 16 is installed.

Note that the reference numeral 17 indicates a refurbished door that is fitted into the refurbished frame.

As is clear from the diagram, when using the above-mentioned renovation frame, it is possible to complete the construction work in a short period of time while still using the building by using the existing frame without removing the old frame or destroying the walls. Furthermore, it can improve the safety of buildings in the event of an earthquake.

As described above, according to the present invention, in the event of a major earthquake, etc., the deformation of the door frame can be absorbed and the door can be easily pushed during evacuation, without compromising the fire and crime prevention functions or aesthetics of the door. Since it can be opened, it has the effect of improving the safety of the building and reducing damage in the event of an earthquake.

Furthermore, since the present invention has a simple configuration, it also has the effect of providing a deformation absorbing layer at low cost.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing an embodiment of the present invention, Fig. 2 is a cross-sectional view thereof, and Fig. 3 A-C are model views showing the state in which the door and door frame have been deformed due to earthquake damage. Figure 4 is a cross-sectional view showing an example of renovation when the present invention is applied to an existing door frame, Figure 5 is an explanatory diagram showing the state of the building before and after deformation during an earthquake, and Figure 6 is FIG. 2 is a cross-sectional view showing a conventional structure. 1: vertical frame, 2: upper frame, 3: binding, 4: door body, 5:
Edge of door, 6: Top plate, 7: Back plate, 8: Acute protrusion,
9: Flat part, 10: Tapered surface, 11: Flat part, 12: Door stop, 13: Sliding member, 14: Existing vertical frame, 15: Screw,
16: Renovated vertical frame, 17: Renovated door body.

Claims (1)

[Scope of utility model registration request] 1. The door frame is fixed to the wall opening of the building, the door body 4 fits into the door frame, and the door body is hung in the door frame so as to be openable and closable through hinges fixed to the door frame and the door body, respectively. In a building side door that is designed to be recessed, the panel width on the front surface of the door is made wider than the panel width on the back surface, and an acute-angled protrusion 8 is provided on the outside side of the four peripheral end surfaces 5 of the door, and the acute-angled protrusion 8 is opposed to the above-mentioned acute-angled protrusion 8. A tapered surface 10 that expands outward is provided on the external side of the inner circumferential surface of the door frame, and the clearance between the acute-angled protrusion 8 and the tapered surface 10 becomes narrower toward the outdoor side (opening side) than the indoor side. A deformable absorption door for buildings, which is characterized by: 2. On the inner peripheral surface of the door frame and the inner side of the end surface 5 of the door body 4, 7m/
A deformation-absorbing door for a building according to claim 1 of the utility model registration claim, which is provided with a clearance of m or more.