JP2595264Y2 - Fire panel shutter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire panel shutter for improving fire protection, heat insulation and smoke shielding performance in the event of a fire.

[0002]

2. Description of the Related Art FIG. 9 is a schematic front view showing a conventional panel shutter. In the drawing, reference numeral 1 denotes a pair of left and right guide rails which are arranged upright on both sides of a shutter opening / closing opening of a building. The guide rail 1 is formed of a substantially U-shaped member having a vertically long opening for guiding the panel up and down on each opposing surface.

A panel storage box 2 is disposed above the guide rail 1, and a pair of left and right panel lifting drive sprockets (shown in FIG. 1) located above the guide rails 1 in the panel storage box 2. ) Are arranged, and panels 4 and 5 in a plurality of upper and lower stages are rotatably and flexibly connected and suspended via long pins P by a panel connecting chain 3 meshed with these sprockets.

FIG. 10 is a perspective view showing a fitting portion between panels in FIG. Here, in each of the panels 4 and 5, fitting protrusions 4a and 5a (only the fitting protrusion 5a of the lower panel 5 is shown) are provided at the upper end portions as shown in FIG. Fitting recesses 4b, 5 at the lower end
b (only the fitting recess 4b of the upper panel 4 is shown) are integrally formed.

Thus, when all the panels 4, 5 are extended between the guide rails 1 and the shutters are fully closed, the fitting projections 4a, 4a,
The fitting of the fitting recesses 4b and 5b prevents the gap between the panels 4 and 5 from occurring.

Next, the operation will be described. When all the panels 4 and 5 are stored in the panel storage box 2 in a parallel folded state and the sprocket of the panel lifting / lowering drive system is driven to rotate in the panel feeding direction, the chain 3 meshed with the sprocket is rotated. By being fed into the guide rails 1, the panels 4, 5 sequentially descend along the guide rails 1. When the lowermost panel 5 is grounded, the upper panel 4 is placed on the panel 5.
Are sequentially lowered, so that the fitting recesses 4b are formed.
The fitting projections 4a are fitted to each other, and the panels 4 and 5 are overlapped without any gap, so that the shutter is fully closed.

[0007]

The conventional panel shutter is constructed as described above.
In a shutter fully closed state in which all the panels 4 and 5 are extended between them, the fitting concave portions 4b and the fitting convex portions 5a are fitted to each other so that a gap between the panels 4 and 5 is eliminated. If the panels 4 and 5 are made of a heat-insulating and fire-resistant structure, it is possible to obtain a corresponding heat-shielding and smoke-proofing performance. In most cases, the heat distortion generated at the time of the occurrence of a fire cannot be absorbed. For this reason, the thermal distortion causes the uneven fitting portions 4b and 5a to float as shown in FIG. There is a gap in the fire
There was a problem that the heat and smoke shielding performance was impaired and a safe fire protection zone could not be formed.

This invention has been made in order to solve the above-mentioned problems, and it is possible to securely seal the gaps between the panels by utilizing the thermal expansion phenomenon of the panels generated at the time of the occurrence of a fire. It is an object of the present invention to provide a fire panel shutter that can secure a safe fire protection area with excellent smoke shielding performance.

[0009]

A fire panel shutter according to the present invention is opened and closed by a plurality of upper and lower panels interconnected between a pair of left and right guide rails arranged upright on both sides of a shutter opening / closing opening. In the fire prevention panel shutter, the left and right sides of each of the panels are arranged alternately on the left and right sides to allow the panel to move up and down along the guide rails in normal times, and Side engaging claws for engaging with the guide rails so that the expansion directions of the panels in the horizontal longitudinal direction due to the heat effect at the time are alternately opposite for each panel, and the upper and lower ends of the panels are provided. The part is located between the panels in a state where the guide rails are closed, and is normally held in a disengaged position in a normal state, and in the event of a fire, the panels expand due to thermal expansion in alternately opposite directions. There are those upper engaging claw and the lower engaging claw to lock the panels mutually engaged has a structure in which respectively.

[0010]

According to the fireproof panel shutter of the present invention, when a fire occurs in a state in which a plurality of upper and lower panels are completely closed between the guide rails, the panels in each of the above stages thermally expand. By the action, the side engaging claws provided at one of the right and left ends of each panel engage with the guide rail. As a result, the panels of each stage thermally expand in the direction opposite to each stage toward the direction in which the respective side engaging claws are not provided. Due to the thermal expansion, the lower engaging claw of the upper panel and the upper engaging claw of the lower panel, which were in the disengaged position between the panels, move in a relative direction (engagement direction) and engage with each other. The panels are locked together. Therefore, it is possible to prevent the occurrence of gaps between the panels due to the distortion of the panels due to the influence of heat in the event of a fire, and to maintain the panels without gaps. Smoke performance is obtained and a safe evacuation area can be secured.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial front view of a fire panel shutter according to an embodiment of the present invention, FIG. 2 is a view taken along line AA of FIG. 1, FIG. 3 is a partially enlarged view of FIG. FIG. 5 is a cutaway front view of a main part of the panel fitting in FIG.
FIG. 6 is an enlarged sectional view taken along the line BB of FIG. 5, and the same or corresponding parts as in FIGS. In FIG. 1, reference numeral 6 denotes a side engaging claw integrally provided on the left end of the upper panel 4, and 7 denotes a side engaging claw integrally provided on the right end of the lower panel 5. In this manner, the left and right sides of each of the upper and lower panels 4 and 5 fed out between the guide rails 1 and 1 are alternately left and right for each panel 4 and 5 respectively. Are provided.

Reference numerals 8 and 9 denote engagement receiving portions integrally formed inside one side of each of the guide rails 1 and 1 and extending in the entire vertical direction. The engagement receiving portions 8 and 9 in the illustrated example are vertically engaged. The vertical engagement grooves 8 and 9 are provided in the panels 4 and 5 respectively.
Are engaged so as to be able to move up and down.

When the panels 4 and 5 are at normal temperature, their side engaging claws 6 and 7 are loosely fitted in the vertical engaging grooves 8 and 9 and the guide rail 1 , 1
The vertical engagement grooves 8, 9 allow the panels 4, 5 to move up and down along the vertical engagement grooves 8, 7 due to the expansion phenomenon of the panels 4, 5 due to the heat effect when a fire occurs. The expansion directions of the panels 4 and 5 are alternately reversed in each stage by the engagement.

An upper fitting portion 10 is formed at the upper end of each of the panels 4 and 5, and a lower fitting portion 11 is formed at the lower end of each of the panels 4 and 5. The fitting portion 10 and the lower fitting portion 11 have a sectional shape shown in FIG. 6 so that the lower fitting portion 11 of the upper panel 4 fits into the upper fitting portion 10 of the lower panel 5 when the shutter is closed. Is formed.

Reference numeral 12 denotes an upper engaging claw integrally provided on the upper fitting portion 10 which is an upper end of each of the panels 4 and 5;
Are lower engaging claws integrally provided on the lower fitting portion 11, which is a lower end portion of each of the panels 4 and 5, and the upper engaging claws 12 and the lower engaging claws 13 are shown in FIG. As shown in FIG. 5, it is formed in a shape that is bent and projected alternately in the relative direction.

The upper fitting portions 1 of the panels 4 and 5 are mutually connected.
In a state in which the lower engagement portion 11 is fitted with the lower engagement portion 11, the upper engagement claw 12 and the lower engagement claw 13 are held in a disengaged position separated from each other at normal temperature at normal temperature, and In the event of a fire, the upper and lower engaging claws 12 and 13 move relative to each other due to thermal expansion of the panels 4 and 5 alternately in opposite directions, and engage with each other.

Next, the operation will be described. 7 and 8 are explanatory diagrams of the operation. As shown in FIG. 1, in a fully closed state in which all the panels 4 and 5 are extended between the guide rails 1 and 1, the lower fitting portion 11 of the upper panel 4 is provided.
Are fitted to the upper fitting portion 10 of the lower panel 5 and the panel 4,
No gap is formed between the five.

In such a fully closed state of the shutter,
As long as there is no fire at room temperature, the upper engaging claws 12 and the lower engaging claws 13 located between the panels 4 and 5 are separated from each other as shown in FIGS. It is held at the non-engagement position, and the side engagement claws 6, 7 of the panels 4, 5 are also simply loosely fitted into the vertical engagement grooves 8, 9 of the guide rails 1, 1. Therefore, in this state, normal (similar to that described in FIG. 9) shutter opening / closing operation can be performed.

However, when a fire occurs in the fully closed state of the shutter, the panels 4 and 5 expand due to the thermal effect. At this time, due to the thermal expansion phenomenon, the opposite end portions of the panels 4 and 5 respectively. Side engaging claw 6,
7 engages with the vertical engagement grooves 8, 9 of the guide rails 1, 1.

Therefore, the panels 4 and 5 are thermally expanded alternately in opposite directions, and the upper engaging claws 12 and the lower engaging claws 13 of the panels 4 and 5 are moved in the directions of the thermal expansion. . Therefore, the upper engaging claw 12 and the lower engaging claw 13 between the panels 4 and 5 are engaged as shown in FIG. 8, thereby locking the panels 4 and 5 with each other. A gap due to thermal strain does not occur between them, and a safe fire protection zone can be secured.

In the above embodiment, the side engaging claws 8, 9 and the upper engaging claw 12 and the lower engaging claw 13
Are not specified for each shape and number. The panels 4 and 5 are of course made of a refractory material, but may be of a hollow shape having a heat insulating space or filled with a heat insulating material.

In FIGS. 1 to 4, reference numeral R1 denotes an upper guide roller provided at the outer end of the long pin P. The upper guide roller R1 extends laterally into the panel storage box 2 shown in FIG. By rolling on the rails, the panels 4 and 5 are suspended in a parallel folded state. R2 is a lower guide roller rotatably supported via brackets on both lower sides of each of the panels 4 and 5, and the lower guide roller R2 is a panel disposed at a lower portion in the panel storage box 2. The guides guide the lower portions of the panels 4 and 5 in a predetermined moving direction.

[0023]

[Effects of the Invention] As described above, according to the present invention, the shutter can be normally opened and closed during normal times, but the shutter curtain is formed when a fire occurs in the fully closed state of the shutter. The panels can be reliably locked to each other by utilizing the thermal expansion generated in the upper and lower panels. For this reason, it is possible to prevent the occurrence of gaps between panels due to the distortion phenomenon of the panels due to the influence of heat at the time of fire, and to maintain the panels without gaps.・ Smoke barrier performance is obtained, and the effect of securing a safe evacuation area can be obtained.

[Brief description of the drawings]

FIG. 1 is a partial front view of a fire panel shutter according to an embodiment of the present invention.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a side view of the panel alone.

FIG. 5 is a cutaway front view of a main part of the panel fitting in FIG. 1;

FIG. 6 is an enlarged sectional view taken along line BB of FIG. 5;

FIG. 7 is an operation explanatory view showing a disengaged state of an engagement claw between panels.

FIG. 8 is an operation explanatory view showing an engagement state of an engagement claw between panels.

FIG. 9 is a schematic front view showing a conventional panel shutter.

FIG. 10 is a perspective view showing a fitting portion between panels in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 4,5 Panel 6,7 Side engaging claw 12 Upper engaging claw 13 Lower engaging claw

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E06B 9/06 A62C 2/06 503 E06B 9/17 E06B 9/58

Claims (1)

(57) [Scope of request for utility model registration] 1. A fireproof panel shutter in which a pair of left and right guide rails arranged upright on both sides of a shutter opening / closing opening are vertically opened and closed by a plurality of vertically connected panels. At one end, the left and right sides are alternately arranged for each panel to allow the panel to move up and down along the guide rails in normal times, and to extend in the horizontal longitudinal direction of each panel due to thermal effects during a fire. A side engaging claw that engages with the guide rail is provided so that the expansion direction is alternately opposite for each panel, and the upper and lower ends of each panel are in a state where the space between the guide rails is closed. The upper engagement, which is located between the panels so that they are normally kept in the disengaged position in a normal state, and in the event of a fire, the panels are mutually engaged due to the thermal expansion of the panels alternately in opposite directions to lock the panels together. Claw and lower engagement A fire panel shutter, characterized in that each of the claws is provided.