JPH0540387Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a real pipe sleeve for fitting into a wall hole.

<Problems to be solved by this invention> Conventionally, as shown in Fig. 15, a real pipe sleeve for fitting into a wall hole is made by fitting angle flanges B to both sides of the opening of a rimless steel pipe A, and then welding them together. Since it was installed, there was a problem in that it required a lot of labor and was not easy to assemble. Jikko Sho 57-, which has been proposed as a way to improve this
Publication No. 61266 is formed by bending a plate flange outward from the duct, and when bent inward as a real pipe sleeve, it overlaps at the four corners and becomes thick, and if the cross section is L-shaped. However, the plate flange cannot be folded up. The present invention attempts to solve such problems.

<Structure of the invention> The present invention includes a rectangular cylinder for fitting into a wall hole, and a band plate portion protruding from the wall hole on both sides of the opening side of each of the four sides constituting the rectangular cylinder, An inward-facing tomo-plate flange in which a wide-outward V-shaped cut portion is provided between each of the strip plate portions, and each of the strip plate portions is bent inward at a right angle to enable contact welding between the strip plate portions. The present invention provides a solid pipe sleeve for fitting into a wall hole, characterized in that the sleeve has the following features:

<Operation> When forming a concrete wall, the real pipe sleeve of the present invention is attached between panels and concrete is poured, and after the concrete has hardened, the panels are removed and the real pipe sleeve is fitted into the wall hole along with the wall.

In addition, after loosely fitting a real pipe sleeve into a large hole in a concrete wall and temporarily fixing it, fill in the gap with caulking material such as cement mortar, and then use this real pipe sleeve to connect ducts inside and outside the wall. It comes into contact.

<Example> Examples will be described below based on the drawings.

2 to 5 show the first embodiment, in which a metal plate 1 is cut in a continuous shape on each side A, B, C, and D with V-shaped cut portions 2 sandwiched between each side. First, the band plate part 3 is folded inward (90 degrees) as shown in FIG. Welding between the strip parts 3 13
Thus, the inward-facing type real pipe sleeve 4 with the end plate flange 3a shown in FIG. 5 is obtained. 15 is a stop hole. The fixing holes 15 at the four corners may be formed by butting grooves 15a and 15b provided in advance on both sides of the V-shaped cut portion 2, as shown in FIG.

Note that if both ends of the band plate portion 3 are simply cut along the side surfaces, an overlapped portion will occur at both ends when folded inward, and if a large cut is made to eliminate the overlap, a gap will be created between the inward-facing type flap flanges 3a. will occur.

Further, FIGS. 6 to 14 show a second embodiment, in which each side has strip portions 3 on both sides and is cut individually.
Double gobs 5 for the female shape shown in Fig. 12 are formed on both sides of the corners of sides A and C, and other sides B and
A male-shaped single bevel 6 is formed at opposite ends of D, and folded inward together with the band plate part 3, and edges B and D are interlocked between both sides of sides A and C, and the band plate part 3 is By welding 13 between them, a real pipe sleeve 7 having an inward-facing end plate flange 3a is obtained. Note that 15 is a stop hole.

As shown in FIG. 1, the solid pipe sleeve with the inward-facing side plate flange formed by both embodiments can be inserted between, for example, a wall hole 8 in a building or a structure.
The space between the wall and the wall is filled with caulking material 9 and installed, and the duct 10 and damper 11 are interconnected.

<Effects of the invention> As described above, in the present invention, a wide V-shaped cut portion is provided between the strip portions on each side, so that each strip portion does not have overlapping portions at the four corners. Furthermore, the inward-facing side plate flange can be formed without creating gaps at the four corners, resulting in the effect that flanged real pipe sleeves can be manufactured and provided efficiently with significant labor savings.

In addition, since the real pipe sleeve of the present invention has an inward-facing plate flange formed along both sides of the wall hole, even if the real pipe sleeve is embedded and fitted when forming the wall, the stop hole provided in the plate flange will be removed from the wall. Since the plate flange is not clogged with materials and is exposed even along the wall surface, it is possible to easily connect ducts, etc. on both sides of the wall.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an example of the use of the inward-facing type real pipe sleeve with a plate flange of the present invention, Fig. 1A is an enlarged sectional view of the connection part, and Fig. 2 is a real pipe of the first embodiment. A diagram showing the metal plate for forming the sleeve in a cut state; FIG. 3 is an inward folded view of the plate flange;
Fig. 4 is a sectional view taken along the line A-A in Fig. 3, Fig. 5 is an assembled view of a solid pipe sleeve with a plate flange, Fig. 6 is a cutaway view of sides A and C of the second embodiment, and Fig. 7 The figure is the same,
Formation diagram of double goby, Figure 8 is the same, inside folded diagram of the plate flange part, Figure 9 is a cutting diagram of sides RO and D,
Figure 10 is the same, a formation diagram of a single goby, Figure 11 is the same, an inward folded view of the plate flange part, Figure 12 is the same, a sectional view of the goby meshing part, Figure 13 is the same, with a plate flange. Fig. 14 is a perspective view of the corner portion, Fig. 15 is a conventional example, 1 is a metal plate, A, B, C, D are each side, 2 is a V-shaped cut part. , 3 is a band plate part, 3a is an inward-facing side plate flange, 4, 7 is a real pipe sleeve with a side plate flange, 5 is a double seam, 6 is a single seam, 8
is the wall surface, 9 is the caulking material, 10 is the duct, 11
is the damper, 12 is the rounded part of the end of the common plate flange, 1
3 is a welded part, 14 is a stop bolt and nut, 15 is a stop hole, A is a square steel tube, and B is an angle flange.

Claims (1)

[Scope of utility model registration request] A rectangular tube for fitting into a wall hole, and 4 constituting the rectangular tube.
A band plate portion protruding from the wall hole is provided on both sides of the opening side of each side surface, and a wide V-shaped portion is formed between each of the band plate portions.
A wall characterized in that a shaped cut portion is provided and each of the strip portions is bent inward at a right angle to form an inward-facing flap flange that allows contact surface welding between the strip portions. Real pipe sleeve for hole fitting.