JP2002371651A - Passing-through hole closing jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passing-through hole closing jig having good handling efficiency and good mounting workability. SOLUTION: The passing-through hole closing jig includes a mounting section 2 to the outside surface B1 of a structural body B forming a longer substance setting passing-through hole 1, a circular holding frame 3 capable of being outfitted with the longer substance C projected from the passing-through hole 1 and a heat resisting filler 4 filled in a state to close an opening 1A of the passing-through hole 1 between the inside circumferential surface of the circular holding frame 3 and the circumferential surface of the longer substance, the circular holding frame 3 is constituted of divided holding frame bodies 3A divided into a plularity of bodies in the circumferential direction and, at the same time, temporary stopping connecting means 5 for engaging and connecting the neighboring ends of the divided holding frame bodies 3A to each other in a detachable manner are included.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a through hole formed in a wall or a floor for inserting a long object such as a pipe through a heat-resistant filler while the long object is inserted. The present invention relates to a through hole closing jig.

[0002]

2. Description of the Related Art In general, refrigerant pipes for air-conditioning are arranged by using the attic or ceiling of a building. It is common in plumbing. In the case of buildings such as concrete buildings, pipes are installed using through holes formed in walls and floors. According to the above-mentioned rule, it is necessary to close the fire prevention compartment, and in practice, it is performed using a through-hole closing jig that closes the through-hole with the pipe inserted. Conventionally, as this kind of through-hole closing jig 100, as shown in FIG. 14, for example, a pipe C or the like is inserted into a through-hole 1 previously formed in a vertical wall B or the like which is a concrete body, Are fixed to the outer surface B1 of the through hole 1 and the inner peripheral surface of each half frame 101, 101 There is a type in which the inside and outside of the wall can be fire-blocked by filling the fire-proof putty 102 with the outer peripheral surface of C and closing the through hole 1. In such a through-hole closing jig 100, each of the half frame members 101, 101 is brought into almost complete butting.
1, a screw receiving portion 103 provided integrally with
103 are vertically overlapped, and the concrete screw K
Is screwed into the outer surface B1 of the through hole 1 so that the half frame bodies 101 can be attached and fixed to the outer surface B1 of the through hole 1.

[0003]

However, the work of abutting the half frame members 101 on the outer surface of the through hole 1 is performed using both hands, and subsequently, the joined half frame members 1 are joined.
In order to fix 01, 101 to the outer surface B1 of the through hole 1,
While holding the halved frame bodies 101, 101 with one palm so that the butted state does not collapse, in addition to this, the concrete frame K is guided near the screw receiving portion 103 so that the concrete screw K can be screwed in with a fingertip. In addition, it is necessary to perform an installation operation such as screwing in the concrete screw K with the other hand using an electric screwdriver or the like. For this reason, it is necessary to perform an attachment work that cannot be performed unless the hands are dexterous, and there is a problem that workability is poor. In particular, when the through-hole part through which the piping such as the partition wall behind the ceiling is inserted is closed with a through-hole closing jig, the work is often performed at a high place as if looking through the ceiling window from the ceiling window. It is pointed out that the working posture is such that the face is upward and both hands are always in the lifting posture, and the poor workability overlaps.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has as its main object to provide a jig for closing a through-hole which is easy to handle and has good mounting workability. .

[0005]

According to a first aspect of the present invention, there is provided a through hole closing jig having a mounting portion for an outer surface of a structure having a through hole for disposing a long object. And, an annular holding frame that can be mounted on a long object protruding from the through hole, and filled between the inner peripheral surface of the annular holding frame and the outer peripheral surface of the long object so as to close the opening of the through hole. And the annular holding frame is composed of a plurality of divided holding frames that are divided into a plurality of pieces in the circumferential direction, and adjacent ends of the divided holding frames are detachably connected to each other. The point is that provisional fastening connection means for joint connection is provided.

According to the above-mentioned characteristic configuration, the divided holding frames are engaged and connected by the temporary fixing connecting means to form an annular holding frame, thereby forming a state in which the divided holding frames are temporarily fixed together. As compared with the conventional through hole closing jig, the annular holding frame is not disassembled without permission, so it is easy to handle and even when attached to the pipe insertion portion of the vertical wall, It is possible to hold the whole of the annular holding frame with just one hand, so that the annular holding frame can be easily attached to the outer surface of the through-hole in this holding state. Can be done.

According to a second aspect of the present invention, the through hole closing jig is characterized in that the divided holding frame is formed by dividing an annular holding frame into two parts in a circumferential direction, and the temporary fixing connecting means is provided. The present invention is characterized in that a locking portion and a receiving portion are provided at connection end portions of the two divided holding frames which are opposed to each other in the connection direction so as to be freely inserted and removed from the connection direction.

[0008] According to the above-mentioned characteristic configuration, the connecting direction of the locking portion and the receiving portion is the same as the butting direction of the divided holding frames, and the temporary fixing is performed simultaneously with the combination. be able to.

A feature of the through hole closing jig according to a third aspect of the present invention is that, when the locking portion and the receiving portion are in the engaged and connected state, the locking portion and the receiving portion are tightened from the outside. The point is that fastening means for fixing is provided.

[0010] According to the above-mentioned characteristic configuration, the divided holding frame body is abutted against the long object protruding from the through-hole from the left and right directions, and the long object is surrounded by the annular holding frame in a temporarily fixed state, and then tightened. By tightening and fixing the attaching means, the divided holding frames can be easily connected to each other from the temporarily fixed state to the integrated holding state, so that the annular holding frame can be attached to the outer surface of the through hole with good workability. As it is possible, the annular holding frame body in an integrally connected state is robust, so it is easy to fill a heat-resistant filler between the inner peripheral surface of the annular holding frame and the outer peripheral surface of the long object, and Even if the heat-resistant filler expands due to fire heat, etc., the expansion of the heat-resistant filler is supported from behind by the annular holding frame, so that the expansion can be reliably directed to a long object, A through-hole closing jig with good through-hole fire blocking properties It can be.

A feature of the through hole closing jig according to a fourth aspect of the present invention is that a straightening means for correcting an engagement position between the locking portion and the receiving portion to a set engagement position is provided. .

According to the above feature, when the locking portion and the receiving portion are in the engaged state, the correcting portion corrects the locking portion to the set engagement position. Since the receiving portion and the receiving portion can be tightened, the tightening device can be tightened and fixed without having to check whether the tightening device can be engaged, and the annular holding frame is temporarily fixed. Can be quickly shifted to the integrated connection state, so that there is no waste in handling, and the handling can be improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] Hereinafter, a through hole closing jig A according to a first embodiment of the present invention will be described with reference to the drawings. The through-hole closing jig A according to the present embodiment is described with reference to FIGS.
As shown in the figure, the partition wall B formed of a structure such as a concrete skeleton behind the ceiling is formed, and is attached to the through hole 1 through which a cooling heat insulation pipe C, which is an example of a long object, is inserted. It is constructed so that it can be constructed. In the drawing, an example is shown in which two sets of pipes C having different diameters, which are a set of a coating gas pipe, a coating liquid pipe, a cable, etc. for an air conditioning refrigerant, are inserted into the through-hole 1.

The through-hole closing jig A includes an outer surface B1 of a partition wall B behind the ceiling in which a through-hole 1 for disposing a long object is formed.
And an annular holding frame 3 having an attachment portion 2 for mounting on the long object C protruding from the through hole 1 and between an inner peripheral surface of the annular holding frame 3 and an outer peripheral surface of the long object C. And a heat-resistant filler 4 filled in a state in which the opening 1A of the through hole 1 is closed. The annular holding frame 3 is composed of divided holding frames 3A, 3A equally divided into two in the circumferential direction. In addition, a temporary fixing connecting means 5 for detachably engaging and connecting adjacent ends of the divided holding frames 3A, 3A is provided.

Each of the divided holding frames 3A has a thickness of 1 mm.
The outer peripheral portion 3a has a curved shape in which the outer diameter decreases from the semicircular bottom end 3b toward the half-flange-shaped tip 3c, and both ends of the bottom end 3b. A screw receiving portion 2 for inserting and supporting the concrete screw K and attaching to the outer surface B1 of the through hole is integrally formed at the portion, and the concrete screw K is attached to the attaching portion 2 at both ends of the peripheral surface portion 3a. Recessed part 3d for easy access
Are formed integrally with each other, and temporary fixing connecting means 5 is formed at both end portions of the distal end portion 3c.

The screw receiving portion 2 is provided with each divided holding frame 3
A, 3A, a pair of holding frames 3 are provided.
In the state where the two opposite holding frames 3A, 3A are connected to each other, one of them facing each other in the connection direction of A, 3A is provided on the lower side and the other is provided on the upper side. Therefore, by attaching the overlapping screw receiving portions 2 and 2 to the outer surface B1 of the through hole 1 via the concrete screw K, the two divided holding frames 3A and 3A can be integrally attached.

Both ends of the leading end portion 3c of each of the divided holding frames 3A, 3A are also connected ends facing each other in the connecting direction of the divided holding frames 3A, 3A. Is provided with a locking portion 5A and a receiving portion 5B which are movably engaged in the connecting direction so as to be freely inserted and removed from the connecting direction at the connecting ends of the two divided holding frames 3A, 3A opposed to each other in the connecting direction. In the embodiment, as shown in FIGS. 1, 6, and 7, one locking portion 5A is configured by providing a locking piece 5b on a tongue piece 5a, and the other receiving portion 5B is formed on a distal end portion 3c. It is composed of a locking hole 5c formed. Therefore, in a state where the two divided holding frames 3A, 3A are connected, the locking portion 5A and the receiving portion 5B are engaged, and the two divided holding frames 3A, 3A are engaged.
A can be temporarily set.

As the heat-resistant filler 4, there is used a well-known, putty-like material which expands to a volume ratio of 4 times or more by heating and which can be handled manually. In addition, when the heat-resistant filler 4 is filled and mounted inside the divided holding frames 3A, 3A in advance, workability is good.

With such a configuration, when a plurality of pipes C are arranged in the through hole 1 formed in the wall B so as to be inserted therethrough, as shown in FIG. After the pipe C is externally surrounded by the annular holding frame 3 in which the divided holding frames 3A, 3A are abutted from the left and right in a temporarily fixed state with respect to the pipe C to be formed, the upper and lower screws of the annular holding frame 3. Attached and fixed to the receiving portions 2 and 2 via the concrete screws K to the outer surface B1 of the through hole 1.

Next, as shown in FIG. 5, the space between the inner peripheral surface of the annular holding frame 3 and the outer peripheral surface of the pipes C is filled with a heat-resistant filler 4 to perform a through-hole closing jig A. Complete.

[Second Embodiment] In a through hole closing jig A according to a second embodiment, a temporary fixing connecting means 5 for detachably engaging and connecting adjacent ends of the divided holding frames 3A, 3A is provided. It is provided at both end portions of the peripheral surface portion 3a.

That is, as shown in FIGS. 8 and 9, the temporary fixing connecting means 5 of this embodiment has an outwardly facing mortar tapered screw receiving recess 5d at one end of the peripheral surface 3a. A locking portion 5A made of a tongue piece 5e is provided in a protruding state, and a receiving portion made of a columnar convex body 5f engaged with the locking portion 5A on the other side of the connection is provided inside the other end of the peripheral surface portion 3a. 5B, and the temporary holding state in which the divided holding frames 3A, 3A are engaged with each other can be formed in a state where the divided holding frames 3A, 3A abut each other.

The fastening means 5 includes a fastening screw 6A from the outer surface of the other end of the peripheral surface 3a to the receiving portion 5B.
Is screwed into the screw hole 6B formed in the screw receiving recess 5d of the locking portion 5A, whereby the annular holding frame 3 is brought into the butted state from the temporarily fixed state by screwing the fastening screw 6A. Tightening means 6 is provided so that the divided holding frames 3A, 3A are integrally connected.

Further, when the receiving portion 5B is engaged with the screw receiving recess 5d of the locking portion 5A of the temporary fixing connecting means 5,
A straightening means 7 is provided in which the cylindrical portion 5i of the receiving portion 5B is guided by the inner tapered surface 5h of the screw receiving concave portion 5d, and the tightening screw 6A and the screw hole 6B are corrected to a set engagement position where the screw can be screwed. Have been. Therefore, by performing the tightening operation of the tightening means 6, it is possible to bring the two divided holding frames 3A, 3A into a connected state in which they are accurately butted.

In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. [Other Embodiments] 1) In addition to the temporary fixing connecting means 5 in the first embodiment, as shown in FIGS.
Is constituted by a tongue piece 5a provided with a convex portion 5j, and the other receiving portion 5B is constituted by a locking hole 5a formed in the distal end portion 3c.
A and 3A may be in a temporarily fixed state.
Also, as shown in FIGS. 12 and 13, one of the locking portions 5A
Is composed of a curved tongue piece 5a provided with a locking hole 5k, and the other receiving portion 5B has a key-shaped locking piece 5
m, and the divided holding frames 3A, 3A may be temporarily fixed to each other when they are engaged with each other.

2) In each of the above-described embodiments, the annular holding frame has a two-part structure and each of the split holding frames has the same structure. However, the present invention is not limited to this. Another configuration in which the locking portions 5A and 5A are provided on the 3A side and the receiving portions 5B are provided on the other divided holding frame 3A side may be adopted. Further, in each of the above embodiments, the annular holding frame is described as having the split holding frame bodies 3A, 3A having the two-segment structure. However, the present invention is not limited to this. It may be composed of the frames 3A. Also in this case, by providing the temporary fixing connecting means 5 between the divided holding frames adjacent to each other in the connected state,
The temporarily held annular holding frame 3 can be formed.

3) In the above embodiment, the example in which the structure is applied to the through hole 1 of the wall B made of the concrete skeleton has been described. However, the structure is applied to the through hole 1 of the floor made of the concrete skeleton. You may. Further, in the above embodiment, the example in which the through-hole closing jig A of the present invention is attached and fixed to one opening side of the through-hole 1 has been described. The jigs A may be attached and fixed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a through hole closing jig according to an embodiment to which the present invention is applied.

FIG. 2 is a perspective view showing a state in which a through hole closing jig is attached to an outer surface of the through hole.

FIG. 3 is a simplified front view showing a state before a long object is packaged with a divided holding frame.

FIG. 4 is a simplified front view showing a state in which a pair of divided holding frames are butted.

FIG. 5 is a longitudinal sectional view showing a state where an annular holding frame is attached to an outer surface of a through hole.

FIG. 6 is an explanatory view of a main part showing a state before connecting the temporary fixing connecting means.

FIG. 7 is an essential part explanatory view showing a state in which the divided holding frame is temporarily fixed by the temporary fixing connecting means;

FIG. 8 is a simplified front view corresponding to FIG. 3, showing a through-hole closing jig to which the present invention is applied.

FIG. 9 is a sectional view of a main part showing a fastening unit and a straightening unit;

FIG. 10 is a cutaway side view showing another temporary fixing connecting means to which the present invention is applied.

FIG. 11 is a cutaway side view showing a connection state of the temporary fixing connection means.

FIG. 12 is a cutaway side view showing still another temporary fixing connecting means to which the present invention is applied.

FIG. 13 is a cutaway side view showing a connection state of the temporary fixing connection means.

FIG. 14 is a perspective view of a main part showing a conventional through-hole closing jig.

[Description of Signs] A Through-hole closing jig B Structure (wall made of concrete frame) B1 Outer side surface 1 Through-hole 2 Attachment part (screw receiving part) 3 Annular holding frame 4 Heat-resistant filler material 5 Temporary fastening connection means 5A Locking part 5B Receiving part 6 Tightening means 7 Straightening means

Claims (4)

[Claims] An annular holding frame having an attachment portion to an outer surface of a structure having a through hole for disposing a long object, and capable of being externally mounted on a long object protruding from the through hole. A heat-resistant filler that is filled between the inner peripheral surface of the annular holding frame and the outer peripheral surface of the long object in a state of closing the opening of the through hole is provided, and the annular holding frame is provided in a plurality in the circumferential direction. A through-hole closing jig comprising a divided divided holding frame and provided with temporary fixing connecting means for detachably engaging and connecting adjacent ends of the divided holding frame. 2. The split holding frame body is formed by dividing an annular holding frame into two parts in a circumferential direction, and the temporary fixing connecting means is connected at opposite ends in a connecting direction of the two split holding frames. The through-hole closing jig according to claim 1, wherein the portion is provided with a locking portion and a receiving portion which are engaged so as to be able to be inserted and removed from the connecting direction. 3. A fastening device according to claim 2, further comprising a fastening means for fastening and securing the locking portion and the receiving portion from the outside when the locking portion and the receiving portion are in the engaged and connected state. A through-hole closing jig. 4. A correction means for correcting an engagement position between the locking portion and the receiving portion to a set engagement position.
The jig for closing the through hole according to the above description.