JPH11226142A - Fireproof division through-member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance workability at execution time of a fireproof division through-member, to prevent falling out of a packing material by excellently fitting to the outer periphery of an amorphous through-material, and to reliably exhibit performance of a thermally expansive fire resistant material. SOLUTION: Tongue pieces 17... of a fire resistant material 16 are fitted to the surface and a trough of piping and a cable only by dropping these sleeve main bodies 10, 10a in a floor through-hole from above by installing the saw- toothed thermally expansive fire resistant material 16 having the upper surface covered with a sheet 19 in a holding frame 11 of the sleeve main bodies 10, 10a divided into two parts. Therefore, a packing material such as mortar can be immediately filled from upstairs without requiring to read just the thermally expansive fire resistant material 16. The thermally expansive fire resistant material 16 reliably functions by heat in a fire to prevent the fire, heat and smoke from infiltrating upstairs/downstairs by blocking up the floor through- hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire protection system, such as an apartment building, or a pipe, a cable or the like that penetrates a floor slab. The present invention relates to a fire-prevention-section penetrating member for preventing the like from entering the adjacent room, the upper floor, and the lower floor.

[0002]

2. Description of the Related Art For the purpose of preventing the spread of fire in the event of a fire, apartment buildings, office buildings, schools, and the like are provided with fire compartments (firewalls). Also, when piping, wiring, etc. are performed through this fire prevention compartment, for the purpose of preventing flames, heat, smoke, etc. from entering the adjacent room side or the floor, etc. through these penetrating portions, It is mandatory to install a fire protection kit with a heat-expandable refractory material in the through hole.

[0003] As a commonly used fire protection kit,
The mainstream is the cylindrical or split sleeve type, but in the case of this sleeve type, it is relatively easy to construct at the wall penetrating part, but at the floor slab penetrating part, mortar, putty, etc. , It is necessary to take measures on both the lower floor and the upper floor, which is troublesome. In addition, in the case of a downstairs side, it is necessary to perform construction using a ladder, a stepladder, or the like, and thus there is a problem that the work involves danger.

[0004] Therefore, there has been proposed a fire protection kit which can be constructed only from the upper floor as shown in FIG. In this fire prevention measure kit, first, a heat insulating coated copper pipe 2 is passed through the center of a floor through hole 1 as shown in FIG. 1, and a two-part kit body 3, 3a is dropped into the hole 1 as shown in FIG.
The valley is cut out of the sealing material 4 as shown in FIG.
After wrapping the sealing material 4 as shown in FIGS.
The bolts 6 and the nuts 7 are
And take measures as shown below.

[0005]

However, in this example of measures, as described above, when a plurality of copper tubes 2 and cables penetrate, a trough is formed on the outer periphery between these penetrating objects. Since the depths of the valleys are different from each other, it is necessary to cut and fill the sealing material 4 into a suitable size in order to fill the valleys, which is troublesome. Also,
As shown in -1 and -2, the sealing material 4 is
Since it is necessary to perform an on-site winding operation until the inner diameter of the member 5a becomes large, this operation is also troublesome.

Japanese Patent Application Laid-Open No. 9-280427 discloses a thin plate having a cross section substantially in order to prevent the filler from dropping downstairs when a filler such as mortar or the like is filled into the through hole from the upper floor (on the floor). A large number of support pieces 2 bent in a letter-shape are continuously provided by one or more connecting pieces formed on the side surface thereof,
A receiving fitting is described in which a support is formed along the pipe with the support piece 2 so that the filler D can be filled into the hole from above.

However, in this receiving bracket, it is necessary to adjust the bending angle of the support piece 2 in accordance with the situation of the pipes and holes at the site, at the time of construction.
When the number of pipes is one, it is preferable to match the eccentricity with the hole. However, when the number of pipes is two or more, a valley is formed between the pipes, and the valley has a size, a depth, In many cases, the shape or the like is different, and even if the support piece 2 is bent, the support piece 2 does not conform to these valleys well, and a gap may be formed in the support fitting 3, and the filler may fall downstairs. . Also, when the filler is a heat-expandable refractory, there is a concern that the filler will not function sufficiently.

The present invention has been developed in view of the drawbacks of the above-mentioned known examples, and is characterized in that the construction is simple and that a heat-expandable refractory material can be securely attached, and the like. The purpose is to propose.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, a window divided into a plurality of parts and having an outer diameter set at a lower portion within the diameter of the through hole is provided. Forming a heat-expandable refractory holding frame with
A sleeve main body formed with an engagement step portion having a diameter larger than the diameter of the through hole at an upper portion of the holding frame; an outer diameter side fixed to the heat-expandable refractory material holding frame of the sleeve main body; And a heat-expandable refractory material having a saw-toothed side.

According to a second aspect of the present invention, in the first aspect of the present invention, a sheet is attached to an upper surface of the heat-expandable refractory material.

According to a third aspect of the present invention, in the first or second aspect, the sleeve body is divided into two parts.

According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the engaging step is formed by a vertical frame wall.

According to a fifth aspect of the present invention, in the first to third aspects of the present invention, the engaging step portion is formed by a flange extending in the horizontal direction.

[0014]

When the divided sleeve body is dropped into the through hole and the filler such as mortar and putty is dropped into the sleeve body from above, the filler is received by the heat-expandable refractory material and does not fall downstairs. . When a fire occurs, in the case of coated metal pipes and cables, the coating material melts and collapses in the through holes, leaving the metal pipes and copper wires, and the resin pipes and sheath pipes melt and all collapse, resulting in thermal expansion. When the refractory material expands and closes the through hole, the flame, heat, smoke, etc. are prevented from entering the adjacent room, upstairs, or downstairs.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

This embodiment corresponds to claims 1 to 4 and will be described in detail with reference to FIGS. Fig. 1 (a) (b)
Shows the whole of the fire-prevention section penetrating member divided into two at the center, and 10 and 10a are a pair of flat semicircular sleeve bodies constituting the penetrating member, and these sleeve bodies 10, 10a are windows Forming a holding frame 11 having a radius within the diameter of the floor through hole for mounting the semi-circular heat-expandable refractory material formed with 12,
Subsequent to the holding frame 11, a vertical side wall 14 having a radius larger than the diameter of the floor through hole is formed.
This is a configuration in which an engaging step 15 is formed at a boundary portion with the step 4.

Reference numeral 16 denotes a heat-expandable refractory material attached to the inside of the lower portion of the holding frame 11 of the sleeve bodies 10 and 10a, and the shape of the heat-expandable refractory material 16 in an expanded state is shown in FIG. Thus, the outer diameter side 16a is continuous, and the inner diameter side 16b is formed with tongue pieces 17 tapering toward the tip 17a... Between the tongue pieces 17. It has a saw-tooth shape in which notches 18 are formed. The tongue pieces 17 and the notches 18 are formed by symmetrical punching so that no waste is generated from one sheet. The tongue pieces 17 and the cuts 18 do not need to be symmetrical as long as the cuts 18 are formed therebetween.

Reference numeral 19 denotes a sheet bonded to one surface of the heat-expandable refractory material 16, and the purpose of this sheet 19 is to cover the cuts 18 on one side. Therefore, the cuts 18 may be entirely closed by one sheet 19, or may be closed individually or by a plurality of sheets. The sheet 19 is made of the heat-expandable refractory material 1.
6 in a developed state, they are attached as shown in FIGS.

The heat-expandable refractory material 16 having the above structure is shown in FIG.
As shown in FIG. 2A, inside the lower part of the holding frame 11 of the sleeve bodies 10 and 10a, as shown in FIG.
The outer diameter side 16a is held by the claw 20 and the tongue piece 17
Are inclined upward toward the inner diameter side and approach each other with the notches 18 interposed therebetween, forming a hole in the center where the tips 17a of the tongue pieces 17 abut, and the sheet 19 has a V in the notches 18.
It is in a state of being folded into a letter shape.

The means for attaching the heat-expandable refractory material 16 to the holding frame 11 may be a wire or the like other than using the above-mentioned claw 20. Unless otherwise, any method may be used. 21 and 21a are the sleeve body 1
This is a connecting portion when assembled in a ring shape with 0 and 10a facing each other. A step is formed on one side 21 by the thickness of the side wall 14 and fixed by screws 22. However, this connection means may be another method.

FIG. 3 is a plan view showing a state in which the sleeve bodies 10 and 10a are opposed to each other and then connected by connecting portions 21 and 21a. Next, a construction example in which a fire prevention measure is performed using the penetrating member having the above configuration will be described in detail with reference to FIGS.

First, as shown in FIG. 7, when a pipe 25 and a cable 26 are gathered in a floor through hole 24 provided in a floor slab 23, the sleeve body is divided into two parts as shown in FIG. As shown in FIG. 6, one of the members 10 and 10a is dropped into the floor through hole 24 from above until the engagement step 15 engages the edge of the floor through hole 24. At this time, the tips 17a of the tongue pieces 17 of the heat-expandable refractory material 16 are shown in FIGS.
As shown in the figure, the tip 17a of a part of the tongue piece 17 enters the valley 27 of the pipe 25 and is in contact therewith.

Next, the other sleeve body 10a is dropped into the opposite side of the floor through hole 24 in the same manner as the sleeve body 10. FIG. 8 shows this state.
The tongue piece 1 is provided on the outer peripheral surface of the pipe 25 and the cable 26 and the valley 27.
7 contact each other and fill the valley 27.

Next, the mortar 28 is poured into the sleeve bodies 10 and 10a from above to a predetermined position, and the measures are completed. This state is shown in FIGS. If a fire or the like occurs downstairs or upstairs by applying fire prevention measures by the above method, in the case of a coated metal pipe and a cable 26 due to this heat, the coating material is melted, Only the pipe and the cable 26 remain, and at the same time, the heat-expandable refractory material 16 is thermally expanded in the floor through hole 22a while being in close contact with the metal pipe and the cable 26, and closes the entire floor through hole 24. As a result, flames, heat, smoke, etc., are passed through the floor through hole 24,
Or it is prevented from invading downstairs.

In this embodiment, the sleeve bodies 10, 10a are divided into two parts, but may be divided into three parts. Since the step 15 between the holding frame 11 and the side wall 14 is for engaging with the edge of the floor through hole 24, FIG.
As shown in FIG.
The protruding edge 11 a may be formed by folding, and the protruding edge 11 a may be configured to engage with the edge of the floor through hole 24.

[0025]

As described above, according to the present invention, since the heat-expandable refractory material is formed in a saw-tooth shape, it fits well into the valleys between the pipes and the pipes. It does not fall downstairs along the valley. In addition, by attaching the sheet to the surface of the heat-expandable refractory material, the cuts at the intervals of the tongue pieces are securely closed, so that the filler does not fall through the cuts.

The heat-expandable refractory material of the present invention is formed in a saw-tooth shape so that it is arranged in a well-balanced shape around an irregular pipe so that the performance of the heat-expandable refractory material can be sufficiently exerted in the event of a fire. The through hole can be closed.
Further, since the heat-expandable refractory material of the present invention has a sawtooth shape and fits into a pipe or the like simply by dropping the sleeve main body into the floor through hole, it is not necessary to perform a rework or the like, and the work is easy. Note that the penetrating member according to the present invention can be used not only for floor through holes, but also for wall through holes and the like.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state where a penetrating member according to the present invention is divided into two parts.

FIG. 2 is an explanatory view of a state in which a heat-expandable refractory material is attached to a holding frame using claws.

FIG. 3 is a plan view showing a state where the penetrating members are assembled in a circular shape.

FIG. 4 is a development view of a heat-expandable refractory material.

FIG. 5 is a sectional view taken along line AA ′.

FIG. 6 is an explanatory view showing a state where one sleeve main body is dropped into a floor through hole.

FIG. 7 is a sectional view showing a state in which the sleeve main body is dropped into the floor through hole.

FIG. 8 is a sectional view taken along line BB ′.

FIG. 9 is an explanatory view of an embodiment in which a protrusion is engaged with a sleeve main body and a floor through hole.

FIG. 10 is an explanatory view of a measure example of a conventional fire prevention measure kit.

[Explanation of symbols]

 10, 10a Sleeve body 11 Holding frame 12 Window 14 Vertical side wall 15 Engagement step 16 Thermally expandable refractory material 16a Outside diameter side 16b Inside diameter side 17 ... Tongue piece 17a ... Tip 18 ... Cut 19 Sheet 20 Claw 21, 21a Connection part 22 Screw 22a Floor through hole 23 Floor slab 24 Floor through hole 25 Piping 26 Cable 27 Valley 28 Mortar

Claims (5)

[Claims] 1. A heat-expandable refractory holding frame having a window which is divided into a plurality of parts and has an outer diameter set at a lower portion within the diameter of the through hole is formed at a lower portion of the holding frame. A sleeve body formed with an engagement step portion having a diameter larger than the diameter of the hole; a heat-expandable member having an outer diameter side fixed to the heat-expandable refractory holding frame of the sleeve body and a serrated inner diameter side; A fire-retardant compartment penetrating member comprising: refractory material; 2. The fire protection section penetration member according to claim 1, wherein a sheet is attached to an upper surface of the heat-expandable refractory material. 3. The method according to claim 1, wherein
The fire protection section penetrating member, wherein the sleeve body is divided into two parts. 4. The penetration member for a fire prevention section according to claim 1, wherein the engaging step is formed by a vertical frame wall. 5. The fire-prevention section penetrating member according to claim 1, wherein the engaging step is formed by a flange expanded in a horizontal direction.