JPH0967925A - Sheath pipe fixture for through hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To strongly blockade a through hole by providing communicating holes capable of communicating together the inner and outer spaces of a fixed frame in the member inner mounting frame part of the fixed frame in which through hole closing members are positioned. SOLUTION: A fixed frame 4 is provided, which can be inserted into a through hole 2 for inserting a sheath pipe P provided in a partition plate part 1 forming a partitioned space, and can fix the sheath pipe P to the through hole 2 in the outer fitting condition against the sheath pipe P. Next, a plurality of thermally expansible through hole closing members 5,... are respectively provided on a plurality of positions spacedly in the inserting direction to the through hole 2 on the inner circumferential part of the fixed frame 4. In this sheath pipe fixture, communicating holes H,... communicating together the inner and outer spaces of the fixed frame 4 are provided along the radial direction of the fixed frame 4 on a member inner mounting frame part on which the through hole closing members 5 are positioned. Hereby, the respective through hole closing members 5 provided inside/outside the fixed frame 4 transmit force to each other, and the through hole 2 can be strongly blockaded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition pipe-shaped portion (for example, a floor, a ceiling, or a wall) forming a partition space of a building, which is insertable into a through hole for inserting a sheath pipe, and also has a sheath pipe. In contrast, a fixing frame that can fix the sheath tube to the through hole in an externally fitted state is provided, and a plurality of thermally expandable through hole sealing members are provided.
Even if a fire occurs in one of the partition spaces partitioned by the partition plate-shaped portion, even if a fire occurs, for example, it is provided at each of a plurality of locations at intervals in the insertion direction into the through hole in the inner peripheral portion of the fixed frame. The present invention relates to a "sheath tube fixing device for a through hole" for forming a fireproof through part that prevents smoke and flame from passing through the through hole to the other partition space.

[0002]

2. Description of the Related Art Conventionally, as a sheath tube fixing device for a through hole of this kind, as shown in FIG. 7, a member interior in which the through hole sealing member 5 is located at both ends of a fixed frame 40. A frame portion 41 is provided separately, and both of the member-internal frame portions 41 prevent the thermally expanding through-hole sealing member 5 from leaking outward along the radial direction of the fixed frame 40.
Both are formed in a hermetically sealed state, and a mortar M for fixing is used as a sheath pipe P in the intermediate portion 42 between the both-member internal frame portions 41.
Some were formed in a non-sealed state so as to wrap around.

[0003]

As a method of installing this kind of sheath tube fixing tool in the through hole 2, the sheath tube fixing tool 43 is inserted with the sheath tube fixing tool 43 inserted into the through hole 2.
And mortar M is filled in the gap between the inner peripheral wall 2a of the through hole 2 or the sheet-shaped through hole sealing member 6 is wound around the outer peripheral portion of the sheath tube fixing tool 43 and inserted into the through hole 2 as it is. By doing so, there is a method of mounting the gap in a closed state. According to the conventional sheath tube fixing device for a through hole described above, since the member interior frame portion 41 is formed in a hermetically sealed state, it is possible to seal the through hole inside the member interior frame portion 41 due to a fire. Only by the thermal expansion of the member 5, the disappearance trace of the sheath pipe P is filled. However, when the disappearance range of the sheath pipe P is wider than expected, the thermal expansion of the through-hole sealing member 5 is However, there is a risk that the through hole 2 will be consumed in a wide range and the closing force of the through hole 2 will decrease, and it is preferable that the through hole 2 be closed while a stronger tightening force is applied to the interior pipe. It is desirable to be able to. Also,
In the case of installing in the through hole by the former one of the above-mentioned installation methods, in the intermediate portion 42 of the fixed frame 40, the mortar M surrounds the sheath pipe P to seal the sheath pipe P and the through hole. It may harden in the state where it gets in between the contact surfaces with the member. In this way, the through hole sealing member 5 and the sheath pipe P
There is a problem that the thermal expansion of the through-hole sealing member is hindered by the mortar that has solidified between the two.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a sheath tube fixing device for a through hole which can more strongly close the through hole.

[0005]

[Means for Solving the Problems]

[Structure] The characteristic structure of the present invention according to claim 1 is that it can be inserted into a through hole for inserting a sheath pipe provided in a partition plate-like portion that forms a partition space, and is externally fitted to the sheath pipe. In the fixed frame in which the sheath tube can be fixed in the through hole, a plurality of thermal expansive properties are separately provided at a plurality of positions at intervals in the insertion direction of the through hole in the inner peripheral portion of the fixed frame. In the member-internal frame portion in which the through-hole sealing member is located, a communication hole is formed along the radial direction of the fixed frame so as to be able to communicate with the fixed frame inside / outside space.

According to a second aspect of the present invention, the communication hole is formed at an end of the fixed frame in the insertion direction.

A characteristic configuration of the present invention according to claim 3 is that the fixed frame is provided with a restraint portion that restrains thermal expansion along the insertion direction of the through hole sealing member.

According to a fourth aspect of the present invention, the fixed frame is made of sheet metal, and the restraining portion is formed by cutting and raising the frame portion toward the inner peripheral side.

[Operation and Effect] According to the characterizing feature of the present invention according to claim 1, in the member interior frame part in which a plurality of thermally expansive through-hole sealing members are positioned in the fixed frame, Since the communication hole is provided, for example, when the sheath tube fixing tool is installed in the through hole 2 with the sheet-shaped through hole sealing member wound around the outer peripheral portion of the sheath tube fixing tool, the communication Through holes, the through-hole sealing members provided inside and outside the fixed frame can transmit force to each other, and thermal expansion of both the inside through-hole sealing member and the outside through-hole sealing member. Forces can be applied to the inner tube. Therefore, the through hole can be closed more strongly. Further, although the communication hole is provided in the member-internal frame part, since the communication hole is closed by the through hole sealing member internally provided in the fixed frame, the sheath pipe fixing tool is fixed with mortar. Even if you do
It is possible to prevent mortar from entering between the through-hole sealing member and the sheath tube.

According to the characterizing feature of the present invention according to claim 2, since the communication hole is formed at an end portion of the fixed frame in the insertion direction, the through holes formed by the both through hole sealing members. Can be closed at the position closest to the fire side, and a more reliable fire penetration part can be obtained.

According to the characterizing feature of the present invention according to claim 3, since the fixed frame is provided with a restraint portion for restraining thermal expansion along the insertion direction of the through hole sealing member, the through hole is provided. It is possible to cause the thermal expansion force of the hole sealing member to act more efficiently along the radial direction of the sheath pipe P, and to more reliably block the through hole.

According to the characterizing feature of the present invention according to claim 4, the fixed frame is made of sheet metal, and the restraint portion is formed by cutting and raising the frame portion toward the inner peripheral side. While it is possible to achieve such an effect,
It is possible to reduce the manufacturing labor and realize the cost reduction.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 4, a sheath pipe P which can be inserted into a hot water supply pipe is inserted into a through hole 2 for inserting a sheath pipe provided in a wall body 1 (an example of a partition plate-like portion). A situation in which the sheath pipe P is fixed in the through hole 2 by a sheath pipe fixing device (hereinafter, simply referred to as a fixing device) S which is an example of "a sheath pipe fixing device for a through hole" to form a fire penetration part. It is shown.

The sheath pipe P is composed of a flexible pipe made of resin, and a pipe 3 such as a water supply pipe or a hot water supply pipe is inserted therein (may be inserted in advance in some cases).
Therefore, the pipe 3 can be prevented from being exposed and protected, and the pipe 3 can be insulated so that dew condensation on the pipe 3 is less likely to occur.

The fixing tool S is provided with a fixing frame 4 which can be inserted into the through hole 2 and can be externally fitted to the sheath pipe P. An expansive through-hole sealing member 5 is provided and configured. Further, the fixing frame 4 has a sheet-like heat-expandable through-hole sealing member 6 wound around the outer peripheral portion thereof to form the through-hole 2
The sheet-like through hole sealing member 6 is fixed between the inner peripheral wall 2a and the fixed frame 4 in the through hole 2. Therefore, even if a fire occurs and the sheath pipe P burns or contracts, the thermally expanded both through hole sealing members 5 and 6 spread to fill the gap and smoke or flame penetrates. It can be made difficult to pass through the hole 2 (see FIG. 5). The lump-shaped through-hole sealing member 5 is composed of components such as calcium carbonate, an inorganic swelling agent, an organic swelling agent, rubber, and a pigment. It is composed of calcium, inorganic swelling agent, organic swelling agent, unvulcanized rubber, pigment, polyolefin resin and other components.

As shown in FIGS. 1 and 2, the fixed frame 4 is composed of divided frames 4a and 4b which are vertically divided into two. Both of the divided frames 4a and 4b are made of sheet metal, and both are formed by bending a raw material metal plate having the same shape separately. FIG. 3 shows its development view.
In the figure, the broken line corresponds to the valley fold line, the one-dot chain line corresponds to the mountain fold line, and the two-dot chain line corresponds to the valley fold line that is implemented only on one of the divided frames 4a (the one arranged in the lower direction). 7 in the figure
The cut-and-raised portions of 8, 9, 10 serve as partitions for forming the holding space X into which the block-shaped through hole sealing member 5 is fitted, and along the longitudinal direction of the sheath tube of the through hole sealing member 5. The thermal expansion is restrained so that the expansion force easily acts as a tightening force along the radial direction of the sheath tube. A portion of the fixed frame 4 facing the holding space X corresponds to the member-internal frame portion 4c, and
・ The cut-and-raised part of 8 ・ 9 ・ 10 corresponds to the restraint K.
Further, on the side surface portions of the fixed frames 4 and 11 and 12, which are the side portions, claw portions 13 for preventing the detachment of the through hole sealing member 5 fitted in the holding space X are separately provided.
When a force in the detaching direction acts on the through hole sealing member 5,
It is possible to prevent the claw portion 13 from being caught by the groove portion of the through hole sealing member 5 and coming off. On the other hand, an engaging convex portion 14 and an engaging concave portion 15 which are engageable by arranging the divided frames 4a and 4b along the radial direction are separately provided at the intermediate portions of the side surface portions 11 and 12, respectively. is there. Further, by bending the cut-and-raised portions of 7 and 10 along the valley fold lines, the cut-and-raised portions of 16 and 17 in the figure are cut and raised to the outer peripheral side of the fixed frame 4 in a protruding state. Of these both cut and raised parts 16 and 17,
The cut-and-raised portion 16 is a stopper (an example of an insertion blocking mechanism) T that abuts the peripheral portion of the through hole 2 at the end position in the upper portion of the divided frame 4b as the fixed frame 4 is inserted into the through hole 2. Becomes and again,
These 16 cut-and-raised parts are the divided frames 4a arranged below.
In, the tip portion is bent along the two-dot chain line (see FIG. 3), and the protrusion amount is the same as that of the cut-and-raised portion 17. 16 and 17 of the divided frame 4a arranged below
Cut-and-raised part and 1 of the divided frame 4b arranged above
The cut-and-raised portion 7 corresponds to a spacer portion R that secures a predetermined distance between the inner peripheral wall 2a of the through hole and the fixed frame 4. With this spacer function, an appropriate space for arranging the sheet-shaped through-hole sealing member 6 wound around the outer periphery of the fixed frame 4 can be secured around the fixed frame, and the sheath pipe P, the pipe 3, and the fixed member can be directly fixed. It is possible to prevent the weight of the tool S from acting on the sheet-shaped through hole sealing member 6. Therefore, for example, even if a fire occurs, it is possible to support the thermal expansion of the sheet-shaped through hole sealing member 6 in an unbalanced state, and it is possible to expect a high blocking effect for the through holes 2. On the other hand, the member-internal frame portion 4c is provided with a communication hole H along the radial direction of the fixed frame 4 so that the fixed frame inner and outer spaces can communicate with each other. Specifically, the cut-and-raised traces of the cut-and-raised portions of the above 7, 8, 9, and 10 correspond to this communication hole H. By providing the communication hole H, the lump-shaped through-hole sealing member 5 and the sheet-shaped through-hole sealing member 6 mutually pass thermal expansion forces through the communication hole H at the time of fire, as shown in FIG. Will be able to communicate to. Therefore, for example, when the combustion trace of the sheath pipe P is filled with the thermal expansion of the block-shaped through-hole sealing member 5, the thermal expansion force of the sheet-shaped through-hole sealing member 6 can also be effectively applied, It is possible to surely close the through hole and improve the performance of the fire penetration part.
Further, in particular, according to the communication hole H formed at the end of the fixed frame 4, the thermal expansion force of the through hole sealing members 5 and 6 is applied to the shallow portion of the through hole 2, It becomes possible to secure a wider blockage range and improve the fire protection performance.

In the method of forming the fireproof penetration portion using the fixture S of the present embodiment, the sheath tube P is inserted into the through hole 2 in advance,
The fixed frame 4 is arranged such that the sheath tube is sandwiched between the two divided frames 4a and 4b, and the sheet-shaped through-hole sealing member 6 is wound around the outer peripheral portion thereof. In that state,
The fixing frame 4 is slid along the sheath tube P and inserted into the through hole 2, whereby the installation of the fixing tool S is completed.

[Other Embodiment] Another embodiment will be described below.

<1> The sheath tube fixing tool is not limited to the one that is divided into the upper and lower parts described in the above embodiment,
For example, a multi-division configuration of three or more divisions may be used. Further, the sheet metal is not limited to being pressed. And
It is also possible to insert and install a plurality of sheath tube fixing tools in parallel to one through hole. <2> The sheath tube fixture S is fixed to the through hole 2 by replacing the sheet-like through hole sealing member 5 described in the previous embodiment with the sheath tube fixture S being inserted into the through hole 2. In this state, it is also possible to fill the space between the through hole and the inner peripheral wall 2a with mortar. In this case, the intermediate portion between the member interior frame portion 4c and the member interior frame portion 4c is fixed frame 4
Since it is partitioned from the outside of the fixed frame 4 and the communication hole H of the fixed frame 4 is closed by the block-shaped through hole sealing member 6, it is possible to prevent the mortar from flowing into the fixed frame inner space. , For example, by allowing mortar to enter and solidify in the gap between the member 6 for sealing massive through holes and the sheath pipe P,
It is possible to prevent the mortar from resisting the tightening force against the sheath pipe P during thermal expansion of the lump-shaped through-hole sealing member 6 so that the through-hole cannot be sufficiently blocked. <3> Further, the partition plate-shaped portion is not limited to the wall body described in the above embodiment, and may be, for example, a floor plate, a ceiling, a beam, a column, or the like. It is called a shape part. FIG. 6 shows a situation in which a sheath tube fixing device is installed on the floor plate. <4> The sheath tube is, as described in the previous embodiment,
The invention is not limited to the one in which a separate pipe is installed, and for example, the sheath pipe itself may be a cable, an air conditioning pipe, or the like, and they are collectively referred to as a sheath pipe.

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

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a sheath tube fixing device.

FIG. 2 is a perspective view showing a sheath tube fixing device.

[Fig. 3] Exploded view of the disassembled fixed frame

FIG. 4 is a cross-sectional view showing an installation situation of a sheath tube fixing tool.

FIG. 5 is a sectional view showing the operation of the sheath tube fixing device.

FIG. 6 is a cross-sectional view showing an installation situation of a sheath tube fixing device of another embodiment.

FIG. 7 is a sectional view showing a conventional sheath tube fixing device.

[Explanation of symbols]

 1 Partition Plate Part 2 Through Hole 4 Fixed Frame 4c Member Interior Frame Part 5 Through Hole Sealing Member H Communication Hole K Restraint Part P Sheath Pipe

Claims (4)

[Claims] 1. A through-hole (2) for inserting a sheath pipe, which is provided in a partition plate-shaped portion (1) forming a partition space, and which can be inserted into the sheath pipe (P) in an externally fitted state. A fixing frame (4) for fixing the sheath pipe (P) to the through hole (2) is provided, and a plurality of thermally expansible through hole sealing members (5) are provided on the inner peripheral portion of the fixing frame (4). A sheath tube fixing tool for through-holes, which is separately provided at a plurality of positions spaced apart in the insertion direction into the through-hole (2) in the fixing frame (4), for sealing the through-hole. Member interior frame part (4c) in which the member (5) is located
A sheath tube fixing tool for a through hole, in which a communication hole (H) is provided in which the communication between the fixed frame inner and outer spaces is made possible along the radial direction of the fixed frame (4). 2. The communication hole (H) is formed at an end of the fixed frame (4) in the insertion direction.
The sheath tube fixing device to the through hole according to [4]. 3. The fixed frame (4) is provided with a restraining portion (K) for restraining thermal expansion of the through hole sealing member (5) along the insertion direction. The sheath tube fixing device to the through hole according to [4]. 4. The fixed frame (4) is made of sheet metal, and the restraint portion (K) is formed by cutting and raising the frame portion (4) toward an inner peripheral side. Item 1. A sheath tube fixing tool for a through hole according to Item 1.