JPH0323514Y2 - - Google Patents

Description

[Detailed explanation of the invention] Industrial application field This invention relates to a fireproof entrance door using an aluminum alloy door body. Specifically, in the event of a fire, the aluminum alloy door body Even if the door expands due to expansion, it will not deform and create a gap between the door and the frame, and is made of aluminum alloy, which prevents fire from entering and preventing fires from spreading. This relates to fireproof entrance doors.

Conventional Technology With the modernization of lifestyles, the entrance doors installed in modern homes are not only required to have high strength for fire and crime prevention reasons, but also to have an excellent appearance in terms of design. is strongly requested. Conventionally, aluminum alloys have a unique texture, are strong, and are easy to work with, so they are used for entrance doors where the door body made of aluminum alloy is attached to the opening frame. Technology is widespread.

Problems that the present invention aims to solve However, if the door body made of aluminum alloy is simply attached to the frame that forms the entrance opening,
In the unlikely event that a fire occurs and the door body is rapidly heated from the fire source side, the aluminum alloy has a large coefficient of thermal expansion, so the door body a will first be heated up as shown in Figure 5. Due to expansion, it expands greatly in the vertical and horizontal directions, and then curves and deforms inward b, creating a gap between it and the frame c, which poses a problem in which flames can enter and catch fire.

Therefore, we focused on the curvature of the door body due to the heat of a fire, and created a protrusion at the rear of the upper edge of the door body, and a recessed part on the front side of the frame body. A fire door that prevents gaps from forming between the frame and the frame due to curvature has been proposed. Fitting along the vertical direction of the body could not be expected.

The present invention was devised to solve these problems in view of the above-mentioned actual situation, and although the door body is made of aluminum alloy with a high coefficient of thermal expansion,
Even if there is sudden heat caused by a fire, etc., the door body, which has expanded due to thermal expansion, can be held in the frame as it is, causing the door body to curve and deform, creating a gap between the door body and the frame body. The object of the present invention is to provide a fireproof entrance door made of aluminum alloy that can reliably prevent the intrusion of fire and prevent the spread of fire due to fire.

Means for Solving the Problems In order to achieve the above objective, the technical means adopted by the present invention is to install a door made of an aluminum alloy hinged in a frame provided in the opening so that it can be opened and closed. , The blind (or upper frame) and mullion (or vertical frame) of the above-mentioned frame have a thickness that is larger than the expected thickness of the door when facing the upper edge and the edge of the door with the opening closed. The present invention is characterized in that a groove with a large width is formed, and the edge of the door body expanded by thermal expansion fits into the groove while extending in the in-plane direction.

Effect of the invention With the above structure, when a fire occurs and the door body hinged to the vertical frame of the entrance opening is rapidly heated with the opening closed, the aluminum alloy expands. Then, the upper edge of the door body extending in the vertical direction is fitted into a groove formed in a blind (or upper frame) facing the upper edge, and the edge of the door body extending in the left-right direction is supported by fitting into a groove formed in the mullion (or vertical frame) facing the edge of the door edge.
Although the door body is made of an aluminum alloy with a large coefficient of expansion, it will not curve or deform due to thermal expansion and will not create a gap between the door body and the frame that forms the entrance opening, allowing fire to enter.

Embodiment To explain the structure of the present invention as shown in the drawings and in detail, 1 is a frame for an entrance opening, consisting of left and right vertical frames 2, 3 and an upper frame 4 made of extruded aluminum.
Four circumferences are formed by the lower frame 5, and a blind 6 is located on the upper side of the frame 1 and installed between the vertical frames 2 and 3, and a blind 6 is installed between the blank 6 and the bottom frame 5. mullion 7
An opening 8 for entry and exit is formed between the vertical frame 2 and one of the vertical frames 2. Reference numeral 9 denotes an aluminum alloy door made of double-sided plates 10, 10 facing each other with a predetermined interval, and the door 9 is hinged to one vertical frame 2 via flag hinges 11, 11. , the opening 8 can be opened and closed freely.

A groove 12 is formed on the lower surface of the blind 6 facing the upper edge of the door 9 with the opening 8 closed, and the door 9 extending upward due to thermal expansion is inserted into the recess. It is designed to fit into the groove 12. Reference numeral 13 denotes a steel receiving plate attached to the bottom surface of the groove 12, with which the upper end surface of the door body 9 fitted into the groove 12 comes into contact.

In addition, the mullion 7 has a door body 9 that closes the opening 8.
A concave groove 14 is formed facing the edge of the door on the door tip side, similar to the above-mentioned blind 6, into which the door body 9 extended toward the door tip due to thermal expansion is fitted. 15
16 is a transom formed between the upper frame 4 and the mullion 6, and 17 is a sleeve formed between the vertical frame 3 and the mullion 7. Department.

Note that in this embodiment, the door body 9 is made up of double-sided plates 10, 10 facing each other with a predetermined interval, but
As shown in FIG. 4, it may be a decorative door in which a plurality of mirror plates 21, 21, etc. are fitted between the vertical bars 19 and horizontal bars 20 of the door body 18, and the openings are formed between the upper and lower frames and the left and right frames. Of course, it may be made of a vertical frame.

In the above configuration, if the door body 9 with the opening 8 closed is suddenly heated due to a fire occurring in the vicinity, the aluminum alloy will thermally expand and try to extend in all directions in the plane. However, the door body 9 is the vertical frame 2
The sides are supported by the flag hinges 11, 11, and the lower end is supported in contact with the lower frame 5, so that the free edge extends greatly toward the door tip side and the upper end side. The elongated door body 9 is inserted into the concave groove 12 which is formed in a continuous manner 6 facing the upper edge.
Similarly, the edge of the elongated door body 9 on the door tip side fits into the groove 14 formed in the mullion 7 facing the edge of the door tip. Moreover, the recessed portions 12,1
4 is fitted with steel receiving plates 13 and 15, so that they are firmly held in the grooves 12 and 14 in the fitted state, and unlike conventional doors, the door expands due to thermal expansion of the aluminum alloy. The body 9 is deformed and there is no gap between the door 6 and the mullion 7, which prevents fire from entering through the gap, and the door is not affected by the way the door opens inside or outside. .

Effects of the Invention In short, the present invention provides a door in which an aluminum alloy door is hinged to the frame provided in the opening so that it can be opened and closed freely. or a vertical frame), facing the upper edge and edge of the door body with the opening closed, a groove with a width larger than the expected thickness of the door body is formed, and the groove is expanded by thermal expansion. Since the edge of the door body is configured to fit into the groove while extending in the in-plane direction,
When a fire occurs and the door body with the entrance opening closed is heated and the aluminum alloy expands, the upper edge of the door body that extends vertically will open into a concave groove formed in the open (or upper frame) The end edge of the door body that extends in the left and right direction fits into the groove formed in the mullion (or vertical frame) and is held as it is, so even though it is an aluminum entrance door, It will not deform due to thermal expansion and create a gap between it and the frame.
This has an extremely useful practical effect of preventing the invasion of fire and preventing the spread of fire.

[Brief explanation of the drawing]

The drawings show an embodiment of the aluminum alloy fireproof entrance door according to the present invention, in which Fig. 1 is a front view, Fig. 2 is a vertical sectional view of the main part, Fig. 3 is a plan sectional view of the same, and Fig. 3 is a plan view of the same. FIG. 4 is a front view of a door showing another embodiment, and FIGS. 5A and 5B are a side view and a plan view showing a conventional example. In the figure, 1...frame body, 2, 3...vertical frame, 4...upper frame, 5...lower frame, 6...mullust, 7...
...opening, 9...door body, 10...face plate, 11...
Flag hinge, 12... groove, 13... catch plate, 14...
Concave groove, 15... Receiving plate, 16... Transom, 17... Sleeve portion, 18... Door body, 19... Vertical bar, 20... Horizontal bar, 21... End plate.

Claims (1)

[Scope of utility model registration request] In a door in which an aluminum alloy door body is hinged to the frame body provided at the opening so that it can be opened and closed, the blind (or upper frame) and mullion (or vertical frame) of the frame body have the following:
A groove with a width larger than the expected thickness of the door is formed facing the upper edge and the edge of the door with the opening closed, so that the edge of the door expanded by thermal expansion is flat. A fireproof entrance door made of aluminum alloy, characterized in that it is configured to fit into the groove while extending inward.