JPH0759871A - Means for preventing dislodgment of packing meterial - Google Patents

Abstract

PURPOSE:To make it possible to easily carrying out an operation to mount the subject means at a structural body by forming notch lines so as to close the opening at the end of a penetrating sleeve fitted onto a long-sized covering body in a part to be bent in the state of bending the part which is to be bent and is enclosed by the notch lines to form packing material injection holes to the inner side in a diametral direction. CONSTITUTION:This means is provided with the penetrating sleeve 5 which is fittable apart a first spacing D onto the long-sized covering body 3 within a through-hole 2 and is fittable apart a second spacing N into the inside wall W of the through-hole. The means is provided with a collared sleeve fixing member 7 which is formed of a sheet metal having a detaining part 7a freely fittable and detainable onto the penetrating sleeve 5 on its inner peripheral surface and a contact part 7b contactable with the opening face of the through-hole of the structural body 1. This collared sleeve fixing member 7 is provided with the notch lines L forming the packing material injection holes 8a at plural points in the circumferential direction of the collar surface part 8 thereof. The notch lines L are so formed that the opening at the end of the penetrating sleeve 5 fitted onto the long-sized covering body 3 is closed in the part 18 to be bent in the state of bending the part 18 enclosed by the notch lines L toward the inner side of the diametral direction thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a space between a through-hole and a covered elongated body such as an electric wire or an air conditioning pipe which is inserted into the through-hole provided in a structure for closing the space. The present invention relates to a filler falling prevention tool for preventing the filler from falling out of the through hole in the state of being filled with the filler.

[0002]

2. Description of the Related Art Heretofore, as a filler falling-off preventing tool of this type, a receiving plate for receiving a filling material filled from one end side of the through hole and an opening on the other end side of the through hole are closed. There is a structure in which the receiving plate is supported by a supporting rod as shown in FIG. Further, when the support rod cannot be installed, the receiving plate is fixed to the structure by nailing or the like.

[0003]

However, according to the above-mentioned conventional filler falling-off preventive tool, it takes a lot of time to assemble the support rod and hit nails and the like, and the efficiency of the attachment work to the structure is poor. There was a flaw. An object of the present invention is to eliminate the above-mentioned conventional drawbacks and to provide a filler falling-off preventing tool which can be easily attached to a structure.

[0004]

In order to achieve this object, the feature of the filler falling-off preventive tool according to the present invention is that it is externally fitted in the through-hole in a state in which a first gap is opened with respect to the coated elongated body. A cylindrical through sleeve that can be fitted into the through hole inner wall with a second gap left is provided, and an engaging portion that can be externally engaged with the through sleeve is provided on the inner peripheral surface. ,and,
A pair of collar-shaped sleeve fixing members having a contacting portion capable of contacting the through-hole opening surface of the structure is provided, the collar-shaped sleeve fixing member is formed of sheet metal, and the collar-shaped sleeve fixing member A cutout line is formed at a plurality of positions in the circumferential direction to form a filler injection hole by bending those parts inward in the radial direction of the collar-shaped sleeve fixing member, and a fold line surrounded by the cutout line is provided. In a state in which the bending target portion is bent inward in the radial direction, the bending target portion can close the opening of the end portion of the penetrating sleeve fitted onto the covered elongated body, It is located at a point where a notch line is formed, and its function and effect are as follows.

[0005]

That is, since the through-sleeve and the collar-shaped sleeve fixing member having the above-described structure are provided, the collar-shaped sleeve fixing member is provided with the wall thickness of the structure while the through-sleeve is arranged in the through-hole of the structure. Are arranged on both sides in the direction, and the contact portions of the collar-shaped sleeve fixing member are respectively brought into contact with the through-hole opening surface,
The penetrating sleeve can be attached to the structure by externally fitting and locking the engaging portions of the collar-shaped sleeve fixing member to the penetrating sleeve. Then, the collar-shaped sleeve fixing member is formed of sheet metal, and the notch line having the above configuration is provided at a plurality of positions in the circumferential direction of the collar surface portion of the collar-shaped sleeve fixing member.
If the filler injection hole is formed by bending the bending target portion surrounded by the notch line inward in the radial direction of the collar-shaped sleeve fixing member, the inner wall of the through hole and the through sleeve can be formed from the filler injection hole. The filler can be injected into the second gap between and. Further, with respect to the filler injected into the first gap between the coated elongated body and the penetrating sleeve from the opening at the end of the penetrating sleeve fitted onto the coated elongated body, the radial direction of the collar-shaped sleeve fixing member It is possible to prevent the filler in the first gap from falling off by closing the opening with the bending target portion that is bent inward. As described above, the filler falling prevention tool according to the present invention can be attached to the structure without assembling work of the support rod or striking work such as nails,
Installation work to the structure can be easily performed.

In addition to this function and effect, the following function and effect can be obtained. Only by changing the locking position of the collar-shaped sleeve fixing member in the longitudinal direction of the through sleeve, it is possible to easily adjust the protrusion of the through sleeve to the structure surface side in accordance with the situation of the construction site. Since a through sleeve with a length longer than the thickness of the structure can be used, even if the thickness of the structure is thin, by increasing the length of the through sleeve, the required filling length of the through hole in the fireproof structure can be increased. You can secure enough. For example, as a means for preventing the filler from falling off between the coated elongated body and the penetrating sleeve, a lid member for closing the opening of the end of the penetrating sleeve fitted on the coated elongated body is fitted onto the penetrating sleeve. The number of parts can be reduced as compared with the case where it is provided so as to be freely stopped. In addition, as compared with the case where a bending piece for closing the opening at the end of the through sleeve or a through hole for the filler is bent beforehand by a press machine or the like, the flange sleeve fixing member is formed on the flange sleeve fixing member. The processing cost can be reduced.

[0007]

Therefore, it is possible to mount the support rod on the structure without assembling the support rods or hammering the nails, and in the mounting work, the protrusion of the penetrating sleeve can be removed at the construction site. Since it can be easily adjusted according to the situation (above), workability of attachment to the structure is good, and even if the structure is thin, it is necessary to have a through hole in the fireproof structure. Since the filling length can be sufficiently secured (same), it has excellent fire resistance, and the number of parts can be reduced, and the cost for processing the collar-shaped sleeve fixing member can be reduced (same). Thus, it has been possible to provide a cost-effective filler dropout prevention device.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, an air conditioning pipe 3 (an example of a coated elongated body) which is inserted into a through hole 2 of a concrete wall 1 which is an example of a structure is provided with a filler falling prevention tool A and a mortar M, A heat-expandable fireproof putty 4 (both are examples of fillers) is hermetically fixed in the through hole 2 to form a fireproof structure.

The air conditioning pipe 3 is constructed by covering a pipe body 3a made of a copper pipe with a foamed resin heat insulating member 3b.

The filling material drop-out prevention tool A is made of sheet metal. More specifically, as shown in FIGS. 1 and 2, a male screw portion 5 is formed on the outer peripheral surface.
The air-conditioning pipe 3 having a and being inserted into the through hole 2 can be externally fitted to the inside of the through hole 2 with the first gap D, and the second gap N is opened with respect to the through hole inner wall W. In this state, a cylindrical through-sleeve 5 that can be fitted internally is provided, and a female screw portion 7a (an example of a locking portion that can be externally fitted and locked to the through-sleeve 5) that can be screwed into the male screw portion 5a is provided on the inner circumference. With the cylindrical portion 9 provided on the surface and the female screw portion 7a screwed into the male screw portion 5a,
The filler falling-off prevention tool A is provided by providing a pair of collar-shaped sleeve fixing members 7 that are in contact with the concrete wall 1 around the opening of the through hole 2 and cover the second gap N and a ring-shaped collar surface portion 8. Configured.

The through sleeve 5 is formed of a cylindrical body longer than the through hole 2. The outer peripheral side end of the collar surface portion 8 of the collar-shaped sleeve fixing member 7 is bent over the entire circumference in the axial direction, and the bent end portion is used as an abutting portion 7b for the concrete inner wall W. There is. And
As shown in FIGS. 2, 3 (a) and 3 (b), the collar surface portion 8 is formed.
A plurality of cutout lines L are formed at a plurality of positions in the circumferential direction to form mortar injection holes (an example of a filler injection hole) 8a by bending those parts inward in the radial direction of the collar-shaped sleeve fixing member 7. In the state where the bending target portion 18 surrounded by the cutout line L is bent inward in the radial direction, the end edge of the bending target portion 18 contacts the air conditioning pipe 3 and the bending target portion is bent. The cutout line L is formed so that the portion 18 can close the opening at the end of the penetrating sleeve 5 that is fitted onto the air conditioning pipe 3.

In FIG. 1, the bending target portion 18 is bent radially inward of the collar-shaped sleeve fixing member 7 to form a mortar injection hole 8a, and the end edge of the bending target portion 18 is bent. It shows a state in which the air conditioning pipe 3 is brought into contact with the bending target portion 18 and the opening of the end of the penetrating sleeve 5 fitted on the air conditioning pipe 3 is closed (see FIG. 3B). The position of the air conditioning pipe 3 with respect to the penetrating sleeve 5 in the radial direction can be determined by bringing the end edge of the bending target portion 18 into contact with the air conditioning pipe 3. In addition, the contact portion of the bending target portion 18 with respect to the air conditioning pipe 3 has an arc shape along the cross-sectional shape of the air conditioning pipe 3. The cylindrical portion 9 of the collar-shaped sleeve fixing member 7 is provided with a plurality of elastic protrusions 10 for circumferentially positioning the through sleeve 5 with respect to the through hole 2 in the circumferential direction toward the through hole inner wall W side. . The elastic projection 10 is formed so that the tip end side thereof contacts the through hole inner wall W in the through hole 2, and the through sleeve 5 is disposed substantially at the center of the through hole 2 by the respective contacting forces. It is configured as follows. Further, the tip end portion of the elastic protrusion 10 is bent in an arc shape so that the elastic protrusion 10 is unlikely to be caught by the inner wall W of the through hole and is capable of handling through holes having slightly different inner diameters. The female screw portion 7a has threads formed only at a plurality of circumferential positions on the inner peripheral surface of the cylindrical portion 9.

Injection of the mortar M and the refractory putty 4 is performed as follows. First, one of the bending target portions 18 of the collar-shaped sleeve fixing member 7 is bent inward in the radial direction of the collar-shaped sleeve fixing member 7 to form only one mortar injection hole 8a. . And from this mortar injection hole 8a,
The mortar M is injected into the second gap N between the through sleeve 5 and the inner wall W of the through hole. When the mortar M is in a semi-solidified state, one of the plurality of bending target portions 18 is left and all the other portions are bent inward in the radial direction, and the end edge of the bending target portion 18 is conditioned by the air conditioning pipe 3 Then, the bending target portion 18 closes the opening of the end portion of the penetrating sleeve 5 that is externally fitted to the air conditioning pipe 3. The refractory putty 4 is injected through the opening that should be closed by the remaining one bending target portion 18 that has not yet been bent, and after the injection is finished, the remaining one bending target portion 18 is bent to open the end portion opening. Block all of. It should be noted that two or more of the bending target portions 18 are bent to form two or more mortar injection holes 8a,
After the mortar M is in a semi-solidified state, two or more of the plurality of bending target portions 18 are left, and all the others are bent inward in the radial direction, and an opening for injecting the refractory putty 4 is formed. You may make it form two or more.

Since the through sleeve 5 and the sleeve fixing member 7 are made of metal, the through hole 2 as well as the refractory putty 4 and the mortar M are kept closed even when a fire occurs. It is possible to prevent the flow of flame or smoke through the through hole 2.

According to the filler falling-off preventing tool A of this embodiment,
By simply sandwiching the concrete wall 1 with both sleeve fixing members 7 screwed into the through sleeve 5, the filler dropout preventive tool A can be attached to substantially the center of the through hole 2.
The air-conditioning pipe 3 can be easily fixed to the through hole 2 only by filling the first gap D and the second gap N with the fire-resistant putty 4 and the mortar M, respectively. Even if the heat insulating member 3b burns, the thermally-expanded fireproof putty 4 fills up that portion, and it is possible to maintain a state in which a gap through which flame or smoke passes is not generated in the through hole 2. Also,
The thermal expansion action of the refractory putty 4 in the longitudinal direction of the air conditioning pipe 3 can be blocked by the bent target portion 18 of the collar-shaped sleeve fixing member 7 in the bent state, so that most of the thermal expansion of the refractory putty 4 is controlled by the air conditioning. It can act toward the inner side (pipe body 3a) along the radial direction of the pipe 3.

[Other Embodiment] Another embodiment will be described below.

<1> The structure 1 is not limited to the concrete wall described in the previous embodiment, but may be made of other materials, slabs, beams, columns, etc., and It may have a hollow structure. They are collectively called structures. Further, the coated elongated body 3 is not limited to an air conditioning pipe, but may be, for example, an electric wire, a hot water supply pipe, or the like, and these are collectively referred to as a coated elongated body.

<2> The filler 4 is not limited to the refractory putty 4, but may be, for example, mortar or general putty.

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 a cross-sectional view showing a mounting state of a heat insulating material falling prevention tool on a structure.

FIG. 2 is an exploded perspective view showing a heat insulating material falling prevention tool.

FIG. 3A is a perspective view showing a state before forming a filler injection hole in the collar sleeve fixing member. FIG. 3B is a perspective view showing a state in which the filler injection hole is formed in the collar sleeve fixing member.

[Explanation of symbols]

 1 Structure 2 Through Hole 3 Covered Long Body 4 Filler 5 Through Sleeve 7 Sleeve Fixing Member 7a Locking Part 7b Abutment Part 8 Collar Surface 8a Filler Injection Hole 18 Bending Target Part D First Gap L Notched Line N Second gap M Filler W Through hole inner wall

Claims (2)

[Claims] 1. A space for closing the space between the through-hole (2) and the covered elongated body (3) inserted into the through-hole (2) provided in the structure (1). The filling material (4, M) is filled from the through hole (2) with the filling material (4, M) filled.
M) is a filler falling-off preventing tool for preventing falling-off, wherein a first gap (D) is formed in the through-hole (2) with respect to the coated elongated body (3). A cylindrical penetrating sleeve (5) that can be fitted externally and that can be fitted internally with a second gap (N) opened to the inner wall (W) of the through hole is provided, and the penetrating sleeve (5) is fitted with an external member. A pair of collar-shaped sleeves each having a locking portion (7a) which can be fitted and locked, on the inner peripheral surface thereof, and a contact portion (7b) capable of contacting the opening surface of the through hole of the structure (1). A fixing member (7) is provided, the collar-shaped sleeve fixing member (7) is formed of sheet metal, and the flange-shaped sleeve fixing member (7) has a flange surface portion (8) at a plurality of positions in the circumferential direction thereof. Is formed inwardly in the radial direction of the collar sleeve fixing member (7) to form a cutout line (L) forming a filler injection hole (8a). In the state where the bending target portion (18) surrounded by the cutout line (L) is bent inward in the radial direction, the bending target portion (18) causes the covering elongated body (3) to be bent. ), The notch line (L) is formed so as to close the opening of the end of the through sleeve (5) that is fitted to the filler. 2. An end edge of the bending target portion (18) contacts the coated elongated body (3) in a state where the bending target portion (18) is bent inward in the radial direction. The filler falling prevention tool according to claim 1, wherein the cutout line (L) is formed so as to do so.