JPH0749965Y2 - Fire prevention structure for penetrations of electric wires, conduits, etc. in partition walls - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The fire protection structure of the present invention is to be installed in the penetration portion of the intermediate space partition wall through which an electric wire, a conduit tube, a cable rack, or the like is penetrated.

(Prior Art) In a penetration part where an opening is opened in a wall (solid wall) of a building such as a factory or a building, and a cable is pierced through or a pipe is laid, a gap between the pierced part after wiring / piping Fire protection measures must be taken by backfilling with fireproof materials.

In modern buildings, instead of the solid walls mentioned above,
As shown in FIGS. 5 and 5, an intermediate space partition wall C having a hollow portion B formed between two opposing wall plates A such as silicon calcium plates is often used. The middle space partition wall C has many advantages such as being lightweight, reducing the cost of the members used, and being excellent in the heat insulating and soundproofing effect of the hollow portion B.

Even when the penetrating member E such as an electric wire or a conduit is penetrated through the opening D formed in the intermediate space partition wall C, it is necessary to take fire protection measures in the same manner as the solid wall. There was a fire protection structure shown in Figs.

Among them, in the fire protection structure of FIG. 3, a box type metal sleeve F as shown in FIG. 4 is installed in the opening D,
Non-combustible fibers G such as rock wool are packed in the metal sleeve F, and fireproof plates H such as calcium silicate plates are attached to both sides of the opening D by anchor bolts J to connect the fireproof plate H and the penetrating member E. A heat-resistant sealing material K is filled in the gap between them to close the opening D.

In the fire protection structure shown in FIGS. 5A and 5B, a refractory frame L made of a refractory material such as a calcium silicate plate is formed on the inner periphery of the opening D, and a non-combustible fiber G such as rock wool is formed inside the frame L. The fireproof plates H, such as calcium silicate plates, are packed in both sides of the opening D and attached with anchor bolts J.
The heat-resistant sealing material K is filled in the gap between the penetrating member E and the penetrating member E to close the opening D.

(Problems to be solved by the invention) However, the conventional fire protection structure has the following problems.

． Usually, the wall plate A of the medium space partition wall C is a laminate of about two gypsum boards or silicon calcium plates of about 20 mm, so the mechanical strength is low and the wall plate A itself may be loaded. Can not. Therefore, in the conventional fire protection structure shown in FIG. 3, in order to install the heavy metal sleeve F, a support frame made of steel or the like must be prepared and the sleeve F must be welded to the support frame. The construction was troublesome. In particular, a hole is made in the existing wall board A and the opening D
When forming the above, it was difficult to construct the support frame, and actually it was difficult to construct.

． In the conventional fire protection structure shown in FIG. 5, the refractory frame L has to be constructed by cutting or processing the refractory material at the construction site, so the construction is troublesome and troublesome. .

． In both the fire protection structure shown in FIG. 3 and the fire protection structure shown in FIG. 5, since the fireproof plate H is struck directly to the wall plate A by the anchor bolts J, when a fire occurs, the heat and flames cause the same fire. Cracks occur in the anchor bolt J
There is a possibility that the fireproof plate H will fall off, and if this happens, the fire protection structure of the corner becomes useless.

(Purpose of the invention) The purpose of the present invention is to prevent the fireproof plate from falling off even in the event of a fire.
It is to provide a fire protection structure that has sufficient fire resistance and can be easily installed on site.

(Means for Solving the Problems) As shown in FIG. 1, a fireproof structure for a penetration portion of an electric wire, a conduit or the like in a medium space partition wall of the present invention is a hollow portion between two opposing wall plates AA. In the opening D of the intermediate space partition wall C in which B is formed, the penetration member E such as an electric wire or conduit is penetrated into the opening D in the penetration part of the electric wire or conduit in the intermediate space partition wall. A support metal fitting 1 (FIG. 2) in which an insertion support portion 2 having an L-shaped cross section and an outer support portion 3 having an L-shaped cross section protruding outward from the wall plate A are connected in series.
However, as shown in FIG. 1, the insertion support portions 2 are inserted into the opening D, and the plurality of outer support portions 3 are attached to the inner peripheral surface of the opening D so as to project from the wall plate A. A refractory filler 4 formed in a desired shape in advance is packed and held between the insertion support portion 2 and the penetrating member E, as shown in FIG. 1, inside the outer support portion 3 and at the opening D. The refractory plates 5 which are formed in a desired shape in advance are attached to both outer sides.

(Operation) In the fire protection structure for the penetration portion of the electric wire, the electric conduit, etc. in the intermediate space partition wall of the present invention, among the plurality of support fittings 1 attached to the inner peripheral surface of the opening D as shown in FIG. A refractory filling material 4 which is formed in a predetermined shape in advance is packed between the insertion support portion 2 and the penetrating member E, and is formed in a desired shape inside the outer support portion 3 and on both outsides of the opening D in advance. Since the fireproof plate 5 is attached, even if a fire occurs and the wall plate A is cracked, the fireproof filler 4 and the fireproof plate 5 are supported by the outer supporting portion 3 and are unlikely to collapse, so Fire resistance is maintained.

(Embodiment) FIG. 1 and FIG. 2 are electric wires in the intermediate space partition wall of the present invention,
1 is an example of a fireproof structure for a penetration portion of a conduit or the like.

Reference numeral 1 shown in these drawings denotes a support metal fitting mounted on the inner peripheral surface of the opening D. As shown in FIG. 2, the support fitting 1 includes an insertion support portion 2 having an L-shaped cross section that is inserted into the opening D, and an outer support portion 3 having an L-shaped cross section that projects outward from the wall plate A. And are installed in series. Further, in the support fitting 1 of this embodiment, a communication hole 11 is formed in the base portion 10 of the outer support portion 3, a locking claw 12 is provided on the outside of the through hole 11, and the tip of the insertion support portion 2 is provided. A restriction piece 13 is formed on the bottom surface of the restriction piece 13.

Reference numeral 4 shown in FIG. 1 denotes a refractory filler formed by molding non-combustible fibers G into a desired shape, and the inside of the insertion support portion 2 having the L-shaped cross section and the penetrating member which are inserted into the opening D. It is shaped so that it can be packed between E and E.

Reference numeral 5 shown in FIG. 1 denotes a fireproof plate which is held in the outer supporting portion 3 of the support fitting 1 and is attached to both outer sides of the opening D to close the opening D. As the refractory plate 5, a conventional calcium silicate plate, a foam concrete plate, or the like can be used, and these are preliminarily formed in a size that closes the opening D and fits in the outer supporting portion 3.

The fire protection structure of this embodiment is constructed as follows, for example.

First, the plurality of support fittings 1 are attached to the inner peripheral surface of the opening D so that the insertion support portion 2 of the support fitting 1 is inserted into the opening D and the outer support portion 3 projects to the outside of the wall plate A. Install. After that, when the base 10 of the metal fitting 1 is lightly tapped with a hammer or the like, the locking claws 12 are driven into the wall plate A, and the support metal fitting 1 is locked to the wall plate A. The number of mounting brackets 1 depends on the size of the opening D, as shown in FIG.
It is enough to install a few on each of the four sides.

Next, as shown in FIGS. 1A and 1B, the refractory filler 4 formed in advance into a predetermined shape is inserted into the supporting member 2 of the supporting metal fitting 1.
And the penetrating member E.

In this embodiment, the block-shaped refractory filler 4 is used.
Is inserted around the penetrating member E. The refractory filling material 4 packed in this way abuts against the restriction piece 13 of the support metal fitting 1 and is not pushed in further, and the intermediate space partition wall C
It is retained in the hollow portion B of the same without falling off.

Then, the fireproof plates 5 are attached to both outer sides of the opening D so as to be fitted into the outer side support portions 3 of the plurality of support fittings 1.
In this embodiment, a fixture 15 such as a P-less anchor is inserted into the wall plate A from the outside of the fireproof plate 5 through the through hole 11 of the support fitting 1, and the fireproof plate 5 is fixed to the wall plate A together with the support fitting 1. It is done.

Further, a fireproof sealant K is filled in the gap between the fireproof plate 5 and the penetrating member E to complete the fireproof structure of the present invention.

(Effect of the Invention) The fireproof structure of the penetration portion of the electric wire, the electric wire tube, etc. in the intermediate space partition wall of the present invention has the following effects.

． Instead of directly attaching the fire-resistant plate to the wall plate as in the conventional fire protection structure, the fire-resistant plate 5 is attached inside the outer support portion 3 of the support fitting 1 and on both outer sides of the opening D, and the fire-resistant filling material is attached. Reference numeral 4 denotes the insertion support portion 2 of the support metal fitting 1 and the penetrating member E.
Since the fireproof plate 5 and the fireproof filler 4 are less likely to collapse or fall off even if a fire occurs, the fireproof structure is excellent in fireproof performance.

． It is completed only by combining the support metal fitting 1, the fireproof filler 4 and the fireproof plate 5 which are molded in a desired shape in advance, so that the fireproof material can be cut or processed like the fire protection structure of FIG. There is no need to do so, the site work is reduced, the construction is easy, and the cost is also reduced.

Also, as in the fire protection structure of FIG.
Since it is not necessary to prepare a support frame for supporting the above, it is possible to easily carry out construction even when a hole is formed in the existing intermediate space partition wall C to form an opening.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a fireproof structure for a penetrating portion of an electric wire, an electric wire tube or the like in a medium space partition wall of the present invention, wherein FIG. 1A is a longitudinal sectional view and FIG. Figure, second
FIG. 3 is an explanatory view of a support metal fitting used in the fire protection structure, FIG. 3 is a longitudinal sectional view showing an example of a conventional fire protection structure, and FIG.
FIG. 5 is an explanatory view of a metal sleeve used in the fire protection structure, FIG. 5 is an explanatory view showing another example of the conventional fire protection structure, FIG. A is a longitudinal sectional view, and FIG. It is a front view. 1 is a support metal fitting, 2 is an insertion support part, 3 is an outer support part, 4 is a refractory filling material, 5 is a fireproof plate, A is a wall plate, B is a hollow part, C is a medium space partition wall, D is an opening part, and E is a penetrating member.

Claims (1)

[Scope of utility model registration request] 1. A medium space partition wall in which a penetrating member E such as an electric wire or a conduit is penetrated through an opening D of a medium space partition wall C in which a hollow portion B is formed between two wall plates A facing each other. In the penetrating portion of the electric wire, the electric wire tube, etc., the support formed by connecting the insertion support portion 2 inserted into the opening D and the outer support portion 3 protruding outward from the wall plate A in an L shape. Metal fittings 1
However, a plurality of the insertion support portions 2 are inserted into the opening D, and a plurality of outer support portions 3 are attached to the inner peripheral surface of the opening D so as to project from the wall plate A. A refractory filler 4 which is formed in a desired shape in advance is packed between the penetrating member E, and a fireproof material which is formed in a desired shape inside the outer supporting portion 3 and on both outer sides of the opening D. A fireproof structure for a penetration portion of an electric wire, a conduit or the like in a medium space partition wall, characterized in that a plate 5 is attached.