JP2012057320A - Construction method for forming alc fire compartment through-hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction method for forming a through-hole on a housing of a wall or a floor or the like comprising ALC.SOLUTION: To a lower hole formed through an ALC panel P, a first sleeve tube 2 with a flange part 5 to be abutted to a wall surface formed at the proximal end part is inserted and fitted to one opening of the lower hole H, and a second sleeve tube 3 with a flange part 8 to be abutted to the wall surface formed at the proximal end part is inserted from the other opening of the lower hole H. At least one of both sleeve tubes 2 and 3 comprises a fire-resistant thermal expansion material. By screwing the part near an insertion destination of the second sleeve tube 3 to the part near the insertion destination of the first sleeve tube 2, the ALC panel P is clamped by the flange parts 5 and 8 of both sleeve tubes 2 and 3.

Description

  The present invention relates to a construction method for forming a through-hole for allowing piping and wiring to pass through a housing such as a wall or floor made of lightweight foamed concrete (ALC).

  In general, when forming a through hole for inserting a pipe or wiring in a frame such as a wall or a floor, a penetration sleeve is attached between a pair of oppositely arranged molds prior to placing concrete. After the sheath tube is inserted into the connection port portion of the sleeve main body of the sleeve, the gap between the inner peripheral surface of the connection port portion and the sheath tube is closed with a soft sealing material such as a putty.

  However, in the case of the penetration sleeve, the gap between the inner peripheral surface of the connection port portion of the sleeve body and the sheath tube is closed and fixed using a plastic seal member such as a putty. In addition, there is a problem in terms of surface, and if the gap between the outer diameter of the sheath tube and the inner peripheral surface of the sleeve is large, it must be blocked using a large amount of a plastic seal member, which further reduces the work efficiency. There was a problem to do. In addition, the plastic seal member has a problem that it is difficult to fix the sheath tube to the connection port of the sleeve body.

  Therefore, the applicant of the present invention firstly, on both ends of the cylindrical sleeve body fixed in a penetrating state to the structure in the cylindrical axial center direction, the first sheath tube corresponding to the opening shape thereof, and the first sheath tube A first connection port portion that can be selectively fitted with an adapter having a second connection port portion that can be fitted with a small-diameter second sheath tube, and the inside of the first connection port portion A latch that can selectively engage with a first engagement portion formed on the outer peripheral surface of the first sheath tube and a second engagement portion provided on the outer peripheral surface of the adapter on the peripheral surface. A penetrating sleeve provided with a portion has been proposed (Patent Document 1).

JP 2006-274643 A

  However, the above-mentioned penetration sleeve is formed at the same time as the construction of the wall surface because it is mounted across a pair of molds between a pair of molds arranged opposite to each other prior to placing concrete. Therefore, it cannot be applied to the wall surface constituted by the ALC panel. In the wall surface of the ALC structure, an electric wire or refrigerant whose inner surface is covered with a thermally expandable refractory material inside the pilot hole opened in the wall surface. Insert the mortar between the outer peripheral surface of the thermally expansible refractory material and the inner peripheral surface of the pilot hole, and keep the fire resistance. It was.

  For this reason, there has been a problem that the number of work steps increases due to mortar filling.

  This invention is made paying attention to such a point, and it aims at providing the method of forming a through-hole by the labor-saving work in the partition wall surface of an ALC structure.

  In order to achieve the above-described object, according to the first aspect of the present invention, the first sleeve pipe formed at the base end portion with the collar portion that contacts the wall surface is formed in the prepared hole penetrating the ALC panel. A second sleeve tube, which is inserted and fitted into one opening portion and has a base portion that is in contact with the wall surface, is inserted from the other opening portion of the lower hole, and at least one of both sleeve tubes is thermally expanded. It is made of a material, and the ALC panel is sandwiched between the flanges of both sleeve pipes by screwing the part near the insertion point of the second sleeve pipe into the part near the insertion point of the first sleeve pipe. Yes.

  In the present invention, a pair of sleeve tubes each having a flange portion at the base end portion are inserted into a prepared hole penetrating the ALC panel, and the pair of sleeve tubes are screwed to each other at their insertion tips. Therefore, the ALC panel can be securely held between the flanges of the pair of sleeve tubes, so that the interior and the exterior communicate with each other through a gap formed between the sleeve tube and the pilot hole formed through the ALC panel. Therefore, even if the labor of filling mortar with the inner peripheral surface of the pilot hole is omitted, sufficient fire resistance can be maintained.

  In addition, since at least one of the sleeve tubes is made of a thermally expandable material, in the event of a fire, the sleeve tube formed of the thermally expandable material expands and is wired / piped to the inner peripheral surface of the sleeve tube and the inside thereof. It is possible to reliably shield the space between the outer peripheral surface of the insertion member such as the electric wire or the refrigerant pipe.

It is a longitudinal cross-sectional view of the sleeve tube for through-hole formation used for implementation of this invention. It is a front view of the sleeve tube for through-hole formation. It is a longitudinal section in the state where it was attached to the wall.

  FIG. 1 and FIG. 2 show an embodiment of a sleeve tube (1) in which a through-hole for inserting an insertion member such as wiring or piping is inserted into a housing portion such as a wall or floor formed by an ALC panel. Yes. The sleeve tube (1) is composed of a first sleeve tube (2) and a second sleeve tube (3) which are inserted into a pilot hole (H) drilled in an ALC panel (P) described later.

  The first sleeve tube (2) and the second sleeve tube (3) are configured so that the second sleeve tube (3) can be inserted and fixed inside the first sleeve tube (2). The first sleeve tube (2) is integrally formed with a flange (5) that contacts the wall surface at one end of the cylinder (4), and is fixed to the inner peripheral surface of the cylinder (4) from the other end. An internal thread (6) is formed in the area. In addition, the second sleeve tube (3) is integrally formed with a flange portion (8) that contacts the wall surface at one end portion of the cylindrical body (7), and an external thread (9) is formed on the outer peripheral surface of the cylindrical body. . Therefore, when the second sleeve tube (3) is assembled to the first sleeve tube (2), the first sleeve tube (2) and the second sleeve tube (3) are rotated relative to each other. It is possible to adjust the dimension between the flanges (5) and (8) formed in the sleeve tubes (2) and (3).

  The first sleeve tube (2) has a cylindrical body (4) formed of a refractory thermal expansion material and is fitted on the outer peripheral surface of the cylindrical body (4) in a state parallel to the axis of the cylindrical body. The ridges (10) project from the cylindrical body at a predetermined interval.

  The second sleeve tube (3) is formed of a synthetic resin material, and the outer diameter of the cylinder (7) in a certain range on the end portion side where the flange portion (6) is formed is set to the first sleeve tube (2 ) In the same dimension as the outer diameter of the cylinder.

  Reference numeral (11) in the figure denotes a cap that is attached to an opening located on the flange forming side of the first sleeve tube (2) and the second sleeve tube (3).

A procedure for forming an insertion hole of an insertion member such as a wiring in the ALC panel (P) using the through hole forming sleeve having the above-described configuration will be described.
As shown in FIG. 3, first, the first sleeve tube (2) is inserted into the lower hole (H) drilled at a predetermined position of the ALC panel (P) from the indoor opening of the lower hole (H). The fitting ridge (8) protruding from the outer peripheral surface of the first sleeve tube (2) is fitted to the inner peripheral surface of the lower hole (H).

  Next, the second sleeve tube (3) is inserted into the lower hole (H) drilled in the ALC panel (P) from the outdoor opening of the lower hole (H), and the insertion tip is inserted into the first sleeve tube ( 2) At the insertion tip of 2), by rotating the second sleeve tube (3), the male screw (7) formed on the outer peripheral surface of the tubular body of the second sleeve tube (3) is attached to the first sleeve tube (2). ) Is screwed into a female screw (5) formed on the inner peripheral surface portion on the insertion tip side, thereby a sleeve tube (1) constituted by a first sleeve tube (2) and a second sleeve tube (3). The length of the wall of the ALC panel (P) is adjusted to the flanges (5) and (8) formed at the outer end of the first sleeve tube (2) and the second sleeve tube (3). As a result, the ALC panel (P) is sandwiched between the flanges (5) and (8), and a through hole is formed.

  At this time, since the first sleeve tube (2) is in contact with the inner peripheral surface of the lower hole (H) by the fitting protrusion (10), the first sleeve tube (2) is rotated when the second sleeve tube (3) is rotated. The sleeve tube (2) does not rotate together, and the ALC panel (P) can be securely held between the both flanges (5) and (8).

  When inserting an insertion member such as a wiring through the through hole of the ALC panel formed in the above-described process, caps attached to the openings of the first sleeve tube (2) and the second sleeve tube (3) ( 11) is removed, the insertion member is inserted into the through hole, and the insertion member is held in a predetermined posture inside the through hole by a holder such as an adapter.

  And when a fire occurs in the state of use with the insertion member attached, the heat-resistant thermal expansion material constituting the first sleeve tube (2) is expanded by the heat, and is formed on the outer peripheral surface of the insertion member. The gap is blocked, and communication between the room and the outside is blocked.

  In the above embodiment, the first sleeve tube (2) which is the receiving side among the pair of sleeve tubes (2) and (3) which are inserted into each other has been described. The sleeve tube formed of the refractory thermal expansion material may be the second sleeve tube (3) on the insertion side, or may be both a pair of sleeve tubes.

  P ... ALC panel, H ... Pilot hole formed in the ALC panel, 2 ... First sleeve tube, 3 ... Second sleeve tube, 5 ... First sleeve tube collar, 8 ... Second sleeve tube collar, 10 ... Mating ridge.

Claims (4)

  A first sleeve tube (2) having a base (5) in contact with the wall surface is formed in one opening of the lower hole (H) in the lower hole (H) formed through the ALC panel (P). A second sleeve tube (3) having a flange (8) abutting against the wall surface and formed at the base end portion is inserted from the other opening of the lower hole (H). At least one of (2) and (3) is made of a refractory thermal expansion material, and the portion near the insertion point of the second sleeve tube (3) is screwed into the portion near the insertion point of the first sleeve tube (2). The construction method of forming the ALC fire prevention section through-hole in which the ALC panel (P) is sandwiched between the flange portions (5) and (8) of both sleeve pipes (2) and (3).   The construction method for forming the ALC fire prevention compartment through hole according to claim 1, wherein the first sleeve tube (2) is made of a thermal expansion material.   The construction method for forming the ALC fire prevention compartment through hole according to claim 1, wherein the second sleeve pipe (3) is made of a thermal expansion material.   A fitting ridge (10) formed parallel to the shaft center at a predetermined interval in the circumferential direction on the outer periphery of the first sleeve tube (2) is formed in the lower hole (H) formed through the ALC panel (P). The ALC fire prevention compartment through-hole according to any one of claims 1 to 3, wherein the first sleeve tube (2) is fixed to the ALC panel (P) so as not to rotate relative to the ALC panel (P) by being press-fitted to the inner peripheral surface. Construction method to form.

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