JPH07247767A - Deformation preventing structure for fireproof door - Google Patents

Abstract

PURPOSE:To prevent deterioration of fireproofness resulting from thermal deformation occurring to side parts including stiles of a glazed door, and to improve fireproofness further while reducing cost. CONSTITUTION:A stile 5A on one side of a door 1 for opening and shutting an opening A is held to a fixing part with a pair of hinges 6 on the upper and the lower parts so that it can turn round a vertical axis (a). Projections 8, protruding toward the other side in the in-plane direction of the door, are provided to the stile 5A and one side of a vertical frame 2 so that they can extend over the entire length, or extend nearly over the entire length of the one side of the vertical frame. Grooves 9, to which the projections can be fitted reversibly from the in-plane side of the door following the closing of the door 1, are formed to the stile 5A and the one side of the vertical frame 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for improving the safety of fire doors, and more particularly, to a pair of upper and lower side edges in a vertical position at one end in the width direction of a door for opening and closing an opening. The present invention relates to a technology for a swing door type fire door in which a fixed portion is rotatably supported around a vertical axis via a hinge.

[0002]

2. Description of the Related Art A swing door type fire door in which a side portion of a door, which is represented by a vertical frame of a glass-containing door in which a heat-resistant glass is fitted and fixed to a frame, is supported by a fixed portion through a pair of upper and lower hinges. Then, by adopting a floor hinge or a pivot hinge as the type of hinge, it is possible to configure the hinge in a shape and size that are inconspicuous, and to arrange the hinge in an inconspicuous state to make the fire door look good. It has a design advantage.

In a fire door having such an advantage, the upper and lower end portions of the side edge portion of the door are fixed to the fixed portion in the outward direction of the door surface via hinges, but the upper and lower central portions of the side edge portion are open. Since it is in a loose state that it can be displaced outward from the door surface with respect to a fixed part such as a vertical frame that forms the perimeter, when the door is heated and expands due to a fire, the side parts of the door move vertically upward and downward. It deforms in a bow shape so as to project outward from the door. Such thermal deformation of the side portion is likely to occur largely in a glass-filled door having a vertical frame with a small side portion.

When the side portion is thermally deformed into an arc shape, the length of the gap between the side portion and the peripheral portion of the opening peripheral portion such as the vertical frame in the outer direction of the door becomes smaller, and the gap becomes smoked. This makes it easier for the flame to pass through, resulting in a decrease in the desired fire protection performance, such as smoke or flame leaking through the gap during a fire. In particular, in a glass door, since the heat-resistant glass hardly undergoes thermal deformation, twisting occurs between the vertical frame and the heat-resistant glass, and as a result, large thermal deformation of the vertical frame causes a large local stress on the heat-resistant glass. The heat-resistant glass is easily broken when concentrated. If the heat-resistant glass is cracked, it cannot be used as a fire door.

Therefore, conventionally, as shown in FIG. 8, in a glass fire door, a plurality of projections 16 are attached to a vertical frame 5A at intervals in the vertical direction, and a vertical frame 2 forming an opening peripheral portion is provided. A hole 17 into which the projection 16 is reversibly fitted is formed in accordance with the closing operation of the door, and the projection 16 is hit by the side surface of the hole 17 in the fitted state, so that the vertical frame 5A is vertically deformed due to thermal deformation. The displacement of the central portion of the frame relative to the vertical frame 2 in the outward direction of the door surface is prevented to prevent thermal deformation of the vertical frame 5A into a bow shape.

[0006]

However, according to the above-mentioned conventional technique, thermal deformation of the vertical frame is prevented, and the gap between the vertical frame and the vertical frame is prevented from easily passing smoke or flame. Yes, that is, although it is possible to prevent deterioration of fire prevention performance due to thermal deformation of the vertical frame, the gap itself has not been improved to prevent smoke and flame from passing, so further improvement of fire prevention performance can not be expected. It was Moreover, the deformation prevention holes can be formed in the vertical frame as part of the production of the vertical frame by adding a simple process of drilling the vertical frame, but the deformation prevention protrusions are not , Since it is a part different from the vertical frame, the protrusion cannot be incorporated into the vertical frame manufacturing work, and it is separately required for the projecting work which is completely different from the vertical frame manufacturing work. It was also necessary to attach the protrusions to the vertical frame with bolts, etc., which resulted in a significant increase in cost for maintaining fire protection performance.

The object of the present invention is not only to prevent the deterioration of the fireproof performance due to the thermal deformation of the side portions such as the vertical frame of the glass door, but also to further improve the fireproof performance and to realize it at low cost. The point is to provide a structure for preventing deformation of the fire door.

[0008]

A feature of the structure for preventing deformation of a fire door according to the first aspect of the present invention is that one of the side portions of the side portion and the opening peripheral portion corresponding to the side portion is A protrusion projecting toward the other in the direction of the door surface is formed over the entire length or almost the entire length of the one side, and the other side of the side portion and the peripheral portion is formed from the direction of the door surface along with the closing operation of the door. The point is that a groove is formed to reversibly fit the protrusion.

A feature of the structure for preventing deformation of a fire door according to the second invention of the present invention is that in the first invention, the door has a structure in which heat resistant glass is fitted and fixed to the frame.

A feature of the structure for preventing deformation of a fire door according to the third invention of the present invention is that, in the second invention, the vertical frame forming the side portion is formed in a cross-sectional shape having a protrusion or a groove. The main point is that the sash bar is made of metal, and the peripheral portion is made up of a vertical frame mainly made of a metal sash bar formed in a cross-sectional shape having grooves or protrusions.

[0011]

According to the first aspect of the invention, the projection formed on one of the side portion and the peripheral portion is reversibly fitted into the groove formed on the other side as the door is closed. While the door can be freely opened and closed as desired, it is possible to prevent thermal deformation (see FIG. 5) of the side portion in an arc shape at the time of a fire without a special operation. In other words, when a fire occurs, the side edges tend to thermally deform in an arc shape, but the protrusions that are in the state of being fitted into the groove hit the groove forming portion, and the door between the protrusion and the groove due to the thermal deformation of the side edge By preventing the relative movement in the out-of-plane direction, displacement of the entire side portion in the out-of-door direction with respect to the peripheral portion is prevented, and thermal deformation of the side portion in an arc shape is prevented.

When the protrusion is fitted into the groove, the cross-sectional shape of the gap between the side portion and the peripheral portion, which serves as a passage through which smoke or flame leaks, becomes a labyrinth shape, and the gap becomes smoke. It is difficult to let the flame pass through, and by forming the protrusions over the entire length or almost the entire length of one of the side portion and the peripheral portion, the gap can be formed in a labyrinth shape over the entire length or almost the entire length. Because of this, it can be very difficult for smoke and flame to leak through the gap. In other words, due to the structure that prevents thermal deformation of the sides,
At the same time as preventing thermal deformation, it is possible to improve the smoke return performance that makes it difficult for smoke and flame to leak.

Moreover, the protrusion is formed to have the entire length or substantially the entire length of one of the side portion and the peripheral portion, and the side portion and the peripheral portion have the same cross-sectional shape over the entire length or substantially the entire length thereof. Therefore, when the side and peripheral parts are mainly composed of a metal sash bar such as steel or aluminum, when the metal sash bar is manufactured by roll molding or extrusion molding, By improving the cross-sectional shape, the sash bar with a protrusion and the sash bar with a groove can be manufactured. In other words, the protrusion and the groove can be manufactured as part of the manufacturing of the side portion and the peripheral portion.

According to the second aspect of the invention, although the vertical frame has a narrow width and is easily thermally deformed, the vertical frame is prevented from being thermally deformed, and the gap between the vertical frame and the peripheral portion is smoked. It is possible not only to prevent the passage of flames and flames, but also to prevent the stress from being locally concentrated on the heat-resistant glass by the vertical frame and prevent the heat-resistant glass from cracking.

According to the third aspect of the present invention, the vertical frame can be manufactured with a protrusion or a groove, and the vertical frame constituting the peripheral part can be manufactured with a groove or a protrusion, and the protrusion can be separately manufactured. It is unnecessary.

[0016]

As described above, according to the present invention, not only is it possible to avoid the deterioration of the fire prevention performance due to the thermal deformation of the side portions such as the vertical frame, but it is possible to further improve the fire prevention performance.
It has become possible to provide a deformation prevention structure for a fire door that is easy to carry out at low cost and is particularly useful when the door is a glass fire door as described in claim 2.

In particular, according to claim 3, it can be implemented at low cost.

[0018]

EXAMPLE As shown in FIGS. 1 to 3, a fire door is of an open door type and has two doors juxtaposed in the width direction of an opening A formed in a fireproof wall W. It is a double door type having a door 1.

Of the peripheral portion of the opening A, the peripheral portion 2 and the upper side portion 3 located at both ends in the width direction are formed by the vertical frame and the upper frame fixed to the wall W, and the lower side portion 4 is the floor FL. It is formed from a lower frame fixed to the.

Each of the doors 1 has a structure in which a heat-resistant glass G is fitted and fixed to a frame, and is located at one end side in the width direction of the frame, that is, the side of the opening A corresponding to the vertical frame 2. One vertical frame forming the portion 5A is rotatably supported by a fixed portion via a pair of upper and lower hinges 6 around a vertical axis a. The other vertical frame, that is, the summing vertical frame 5B, is formed with a summing ruler edge 7 that closes the gap between the both summing vertical frames 5B. And both doors 1,
It is configured so that it can be fixed in the closed position by fixing the upper and lower ends of the summing vertical frame 5B to the upper frame 3 and the lower frame 4 respectively with the upper and lower lifting hardware (not shown), and is usually located inside The door 1 having the matching ruler edge 7 is fixed in the closed posture, and the door 1 having the calling ruler edge 7 located outside is used for opening and closing.

The hinge 6 is a take-out type pivot hinge. The upper hinge 6 supports the vertical frame 5A with the upper frame 3 as a fixed portion, and the lower hinge 6 has a lower frame 4 as a vertical portion. It supports the frame 5A.

The fire door is supported by the fixed portion of the door 1 via the hinge 6, that is, the vertical frame 5 on the hanging side.
A deformation preventing means for preventing the deformation of A, specifically, thermal deformation is provided. As shown in FIG. 4, the deformation preventing means includes a plate-shaped projection portion 8 protruding from the vertical frame 5A toward the vertical frame 2 side corresponding to the vertical frame 5A in the direction of the door surface. 5
Formed over the entire length of A, the vertical frame 2 is formed with a groove 9 for reversibly fitting the projection 8 from the outside direction of the door when the door 1 is closed. When the projection 8 is in contact with the side surface of the groove 9 in a state in which the projection 8 is fitted in the groove 9, thermal deformation into an arc shape that displaces the upper and lower intermediate portions with respect to the vertical frame 2 in the door surface outward direction. Configured to prevent. It is preferable that the width w of the groove 9 is as small as possible within a range in which the protrusion 8 can be fitted in and pulled out as the door 1 rotates. That is, the protrusion 8
The vertical frame 5A is thermally deformed until it hits the side surface of the groove 9, but this is because the thermal deformation of the vertical frame 5A until it hits the side surface of the groove 9 of the inevitable protrusion 8 is suppressed as small as possible. .

The vertical frame 2 is mainly composed of a steel sash bar S1 formed in a cross-sectional shape having a groove 9 and a door stop 10, and a steel reinforcing plate S2 fixed thereto. The vertical frame 5A on the suspension base side is mainly composed of a steel sash bar S3 formed in a cross-sectional shape having the above-mentioned protruding portion 8, to which a steel reinforcing plate S4 is fixed, and a sash bar S3 is used for glass fitting. The glass presser F forming the portion is attached to the sash bar S3 via a bolt. That is, the groove 9
Is integrally formed with the vertical frame 2, and the protrusion 8 is integrally formed with the vertical frame 5A. Further, the upper frame 3 and the lower frame 4 are also composed mainly of a steel sash bar, and the upper and lower horizontal frames 5C and the summing vertical frame 5B of the door 1 are also mainly composed of a steel sash bar S5. And a reinforcing plate S
6 is fixed to the sash bar S5, and a glass retainer F forming a glass fitting portion with the sash bar S5 is attached to the sash bar S5 via bolts.

As a means for fixing the heat-resistant glass G to the frame, a setting block SB for supporting the heat-resistant glass G is provided on the lower horizontal frame 5C, and the setting block SB is mounted between the frame and the fitted heat-resistant glass G. A refractory fixing material FM for fixing the heat-resistant glass G to the frame is provided. 11 is a door stop formed on the upper frame 3, and 12 is a door 1
In the closed state, the upper and lower intermediate portions of the summing vertical frame 5B can be freely connected and disconnected, and in the connected state, a lock that prevents the opening operation of the door 1, and 13 is the two doors 1
Two doors 1 that are opened in the order of one door 1 and the other door 1 having the matching ruler edge 7 located on the outer side (opening side) and closed in the order of the other door 1 and the one door 1 It is a rank adjuster that regulates the opening and closing order of, and can cancel the rank adjusting function.

According to the above construction, the vertical frame 5A on the suspension base side
The upper and lower ends of the are fixed to the vertical frame 2 in the door surface outside direction by hinges 6, but the upper and lower intermediate portions are in a loose state in which they can be displaced relative to the vertical frame 2 in the door surface outward direction. From
When heated due to a fire, the vertical frame 5A tends to be deformed in a bow shape with respect to the vertical frame 2 from the normal state shown in (a) of FIG. 5 to the (b) of FIG. However, since the protrusion 8 fitted in the groove 9 comes into contact with the side surface of the groove 9,
The thermal deformation of the vertical frame 5A into a bow shape is prevented over the entire length, and as a result, the length (inward and outward direction) of the gap D1 between the vertical frame 5A and the vertical frame 2 which becomes a passage through which smoke and flame leak The clearance D1 is maintained at the set value or more over the entire length (length in the vertical direction), and it is prevented that smoke or flame easily leaks from the clearance D1.

Moreover, by fitting the protrusions 8 into the grooves 9, the gap D1 becomes a labyrinth shape in which the gap D1 is refracted in a cross-sectional shape over the entire length. Therefore, the gap D1 has a small amount of smoke or flame leakage, that is, It can be made to have a smoke return performance.

Further, since the summing vertical frame 5B is also fixed at the outside of the door surface by raising and lowering both upper and lower ends, and the upper and lower middle portions are in a state where the position can be changed in the outside direction of the door surface, the bow is accompanied by heating. Although it is heat-deformed into a shape, at this time, the upper and lower middle parts are connected by the lock 12, and the both ruler edges 7
By contacting the summing vertical stile 5B, both the summing vertical stiles 5B are thermally deformed integrally, and since there is no relative displacement of the both summing vertical stiles 5B in the direction outside the door surface, The summing ruler edge 7 does not deform the cross-sectional shape of the gap D2 of the summing vertical frame 5B over the entire length.
You can maintain the condition that the gap D2 is covered with the
Regardless of the deformation of B, it is possible to prevent smoke and flame from leaking through the gap D2.

[Other Embodiments] In the above embodiment, the protrusion 8 is formed on the vertical frame of the door 1, that is, the side portion 5A, and the groove 9 is formed on the vertical frame, that is, the peripheral portion 2. The invention is shown in FIG.
As shown in FIG. 4, the groove portion 9 may be formed on the side portion 5A such as a vertical frame, and the projection portion 8 may be formed on the peripheral portion 2 such as a vertical frame.

Although the fire door having the glass-containing door 1 is shown in the above embodiment, the fire door may have a structure in which the end plate 15 is attached to the crosspiece 14 as shown in FIG.

Although the steel sash bar is shown in the above embodiment, the sash bar may be made of aluminum. And, in general, it is manufactured by roll forming when it is made of steel and by extrusion molding when it is made of aluminum.

In the above embodiment, the double door type fire door is shown, but the present invention can be applied to a double door type fire door.

In the above embodiment, the pivot hinge is shown as the hinge 6, but the form and structure of the hinge 6 can be changed appropriately.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Front view of fire door

[Figure 2] Enlarged vertical section side view

FIG. 3 is an enlarged cross-sectional plan view.

FIG. 4 is an enlarged perspective view of a main part.

FIG. 5 is a schematic side view showing a method of thermally deforming the vertical frame.

FIG. 6 is an enlarged cross-sectional plan view of a main part showing another embodiment.

FIG. 7 is a cutaway perspective view of a door showing another embodiment.

FIG. 8 is an enlarged cross-sectional plan view of an essential part showing a conventional technique.

[Explanation of symbols]

 A Opening 1 Door 2 Peripheral 5A Side 6 Hinge a Vertical axis 8 Protrusion 9 Groove G Heat-resistant glass S1 Sash bar S3 Sash bar

Claims (3)

[Claims] 1. Door (1) for opening and closing the opening (A)
A hinged door type in which a side portion (5A) in a vertical position located at one end in the width direction is supported by a fixed portion rotatably around a vertical axis (a) through a pair of upper and lower hinges (6). In the fire door, a projection protruding toward the other in the direction of the door surface to one of the side portions (5A) and a peripheral portion (2) corresponding to the side portion (5A) of the opening peripheral portion. Division (8)
Is formed in a state in which one of the full length or almost the full length
On the other side of the side part (5A) and the peripheral part (2), a groove part (9) for reversibly fitting the projection part (8) from the inside of the door surface in accordance with the closing operation of the door (1) is formed. The structure that prevents the deformation of the fire door. 2. The structure for preventing deformation of a fire door according to claim 1, wherein the door (1) has a structure in which a heat-resistant glass (G) is fitted and fixed to a frame. 3. The vertical frame forming the side portion (5A) is mainly composed of a metal sash bar (S3) formed in a cross-sectional shape having a protrusion (8) or a groove (9). , A metal sash bar (S) whose peripheral portion (2) is formed in a cross-sectional shape having a groove (9) or a protrusion (8).
The structure for preventing deformation of a fire door according to claim 2, which is composed of a vertical frame mainly composed of 1).