JP3004271U - Copper tube fixing bracket - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] The copper pipe for hot water supply can be easily fixed without denting, and once fixed, the copper pipe can be fixed without causing any displacement in the copper pipe. A copper pipe fixture as described above is provided. [Structure] Short pipe 3 that surrounds and closely contacts the copper pipe for hot water supply
1 and a fixing piece 32 which extends outward at one end thereof and which is perpendicular to the axis of the short tube 31 are integrally cast with a metal gun to form a fixing tool.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a copper pipe fixing fitting, and more particularly to a fixing fitting for easily and surely fixing a copper pipe for transporting hot water.

[0002]

[Prior art]

 Buildings Especially in high-rise buildings such as hotels, copper pipes are used to transport hot water to each room. Such a copper pipe is called a hot water supply copper pipe or a hot water supply pipe, and is attached as shown in FIG.

FIG. 1 is a vertical cross-sectional model view of a building. In FIG. 1, 1st, 2nd and 3rd show the first, second and third floors, respectively, and 4 is a hot water supply device. 11 to 13 are hot water supply copper pipes, 11 of which are vertical pipes for sending hot water through the floors 2 and 3, and 12 and 13 are separated from the vertical pipes 11 to distribute the hot water horizontally. It is a laterally running pipe for doing.

The hot water supply copper pipes 11 to 13 expand and contract in diameter and length as the temperature of the hot water flowing in the pipe changes. Of these, the expansion and contraction of the pipe diameter is slight, but it can be ignored, but the expansion and contraction of the pipe length causes large stress on joints, valves, supporting hardware, etc. in long straight pipes, causing water leakage, In extreme cases, it leads to damage. There, both of these copper tubes are arranged to absorb this stress. For example, in the stand pipe 11, a bellows type expansion / contraction absorbing portion 10 is provided in the middle of the pipe so that expansion / contraction stress can be absorbed. For this reason, the stand pipe 11 has been supported by a fixture 21 on the floor 1 and by a fixture 22 on the floor 3 so that it can be expanded and contracted at the portion 10.

As the fixtures 21 and 22, U bolts have been used so far as shown in FIG. That is, taking the fixture 22 as an example, first, an angle 5 is attached on the floor 3 so as to be close to the stand pipe 11, and then U bolts 6 and 7 externally contacting the stand pipe 11 are attached. Both ends of 7 were passed through the angle 5, and the ends were tightened by the nuts 8 to support the stand pipe 11. Since the U-bolts 6 and 7 were made of iron, their surfaces were coated with a synthetic resin in order to prevent galvanic corrosion in contact with the copper tube. Two such U-bolts were usually used side by side.

Although the case where the vertical pipe 11 is fixed to the floor has been described above, the U-bolt is also used when fixing the lateral pipes 12 and 13 to the wall or the ceiling. Was done.

However, there is a problem in supporting the copper tube with the U-bolt. That is, for example, if the U-bolt 6 is tightened too much with the nut 8 in order to securely fix the vertical pipe 11, the vertical pipe 11 will be easily recessed, and therefore the nut 8 must be tightened with caution and skill. There was a difficulty. Further, even after fixing with the U-bolt 6, since the U-bolt 6 has a weak force for fixing the stand pipe 11, the stand pipe 11 moves to hinder the function of the expansion and contraction absorbing portion 10. .

[0008]

[Problems to be solved by the device]

 This invention is intended to solve the above-mentioned difficulties. That is, the present invention provides a fixing metal fitting for fixing a copper pipe without denting the copper pipe, and for fixing the copper pipe so that the copper pipe will not be displaced at all once fixed. is there.

[0009]

[Means for Solving the Problems]

 This invention does not use a U-bolt, but instead of a copper pipe, a copper pipe is surrounded by a short pipe that is in close contact with the copper pipe, and a fixing piece that is integrally attached to this is used to fix the copper pipe. It came from the idea of trying.

The present invention provides a copper pipe fixing metal fitting suitable for supporting a vertically extending vertical pipe among copper pipes. The copper pipe fixing bracket is composed of a short pipe that surrounds the copper pipe for hot water supply and is in close contact with the copper pipe, and a fixing piece that extends outward at one end thereof and is perpendicular to the axis of the short pipe. It is characterized by being cast in.

An example of the embodiment of the copper pipe fixing metal fitting according to the present invention will be described below with reference to the drawings. FIG. 3 shows an example of a copper pipe fixing metal fitting according to the present invention, in which (A) is a plan view and (B) is a sectional view taken along line BB in (A). FIG. 4 is a cross-sectional view showing a usage state of the copper pipe fixing fitting shown in FIG. 5A and 5B show another example of the copper pipe fixing fitting according to the present invention, of which FIG. 5A is a plan view and FIG. 5B is a sectional view taken along line BB in FIG.

In FIG. 3, the copper pipe fixing fitting according to the present invention is made by integrally molding the short pipe 31 and the fixing piece 32 with gunmetal. The short pipe 31 surrounds and closely contacts the hot water supply copper pipe. The fixing piece 32 extends outward at one end of the short tube 31 and is perpendicular to the axis of the short tube 31. The fixing piece 32 has a strip shape and the short tube 31 is located at the center thereof. The width of the band is made equal to the outer diameter of the short pipe 31. As a result, the fixing piece 32 does not spread over the entire circumference of the short tube 31, but is in a state of extending only in one diametrical direction of the short tube 31.

In FIG. 3, a reinforcing piece 33 is connected between the short pipe 31 and the fixed piece 32. The reinforcing piece 33 is in the shape of a right-angled triangle flat plate, and stands vertically from the surface of the fixing piece 32 at the center in the width direction of the fixing piece 32 in the shape of a strip, and the other side forming the right angle is connected to the short side 31. It is connected to the outer circumference. The tip of the reinforcing piece 33 extends to the other end of the short tube 31 and obliquely descends near the end of the fixing piece 32. The reinforcing pieces 33 are provided on both sides of the short pipe 31.

The fixing piece 32 is provided with a hole 34 near the end away from the short tube 31. The hole 34 is a bolt insertion hole, and is used for inserting a bolt for fixing the fixing piece 32.

In this invention, the copper pipe fixing metal fitting is cast with gun metal. Since the gun metal is an alloy mainly composed of copper, it does not cause electrolytic corrosion with the copper tube. Gunmetal is said to be an alloy of about 70 to 80% copper, 10 to 20% zinc, and 10% tin, and is easily cast. Moreover, the gun metal can be easily brazed with copper. Therefore, the fixing tool of this invention can be brazed to a copper tube for use.

The copper pipe fixture shown in FIG. 3 is used as shown in FIG. In FIG. 4, the vertical pipe 11 of the hot water supply copper pipe is inserted into the short pipe 31 of the copper pipe fixing fitting according to the present invention, and the space between the vertical pipe 11 and the short pipe 31 is brazed. Therefore, the copper tube 11 is firmly supported by the fixing fitting. In this way, the fixing metal fitting supporting the copper pipe 11 is fixed to the floor 3 by the bolts 35 passing through the bolt insertion holes 34 to fix the copper pipe. In addition, in FIG. 4, the fixing bracket is directly fixed to the floor for simplification, but it is usually fixed through an angle.

In FIG. 1, instead of fixing the stand pipe 11 with a fixture 22 using U bolts, as shown in FIG. 4, the stand pipe 11 is fixed with the fixing fitting according to the present invention. If the fixing metal fitting according to the present invention is also used for the fixing tool 21, the vertical tube 11 can be fixed easily and securely without any deviation, and therefore the expansion and contraction absorbing portion 10 can work effectively.

In FIG. 4, the method of using the fixing metal fitting according to the present invention has been described by taking the vertical pipe 11 as an example. However, the fixing metal fitting according to the present invention is not limited to the vertical pipe and is slightly changed in the lateral running pipe. Can be added and applied.

The fixture shown in FIG. 5 is a copper pipe fixture used for a copper pipe having a relatively small diameter. In the fixing metal fitting shown in FIG. 5, the fixing piece 32 extends greatly in the longitudinal direction as compared with the fixing metal fitting shown in FIG. 3, and only one bolt insertion hole 34 is formed near the end of each fixing piece. It's just different.

[0020]

[Effect of device]

 According to this invention, the copper pipe fixing metal fitting is composed of a short pipe and a fixing piece, and is integrally cast with gun metal, and the short pipe surrounds and closely contacts the copper pipe for hot water supply. Therefore, the copper pipe can be inserted into the short pipe and the short pipe and the copper pipe can be easily brazed, whereby the fixing fitting can be easily and firmly fixed to the copper pipe. Moreover, after fixing in this way, the fixing metal piece does not move the copper tube at all, and electrolytic corrosion does not occur between the fixing metal piece and the copper tube. Further, since the above-mentioned fixing piece extends outward at one end of the short pipe and is perpendicular to the axis of the short pipe, the fixing piece can be easily fixed to the floor or the wall, and thereby the fixing metal fitting. And the copper tube can be easily and firmly attached to the floor or wall. In this way, the copper pipe can be attached to the building so that the stretch absorption part works well. This idea provides such benefits.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view of a building showing an arrangement of hot water supply copper pipes.

FIG. 2 is a side view showing a state in which a copper pipe for hot water supply is fixed to a floor by a conventional method.

FIG. 3 is a plan view (A) and a sectional view (B) showing a copper pipe fixing member according to the present invention.

FIG. 4 is a partially cutaway side view showing a usage state of the copper pipe fixing fitting according to the present invention.

FIG. 5 is a plan view (A) and a sectional view (B) showing another example of the copper pipe fixing fitting according to the present invention.

[Explanation of symbols]

 1 Building floor 2 Building floor 3 Building floor 4 Hot water supply device 5 Angle 6 U bolt 7 U bolt 8 Nut 10 Expansion and contraction absorbing part of copper pipe 11 Copper pipe (stand pipe) 12 Copper pipe (horizontal running pipe) 13 Copper pipe (horizontal running pipe) 21 Fixing device 22 Fixing device 31 Short pipe 32 Fixing piece 33 Reinforcing piece 34 Bolt insertion hole 35 Bolt

Claims (3)

[Scope of utility model registration request] 1. A short pipe which surrounds a copper pipe for hot water supply and which is in close contact with the copper pipe, and a fixing piece which extends outward at one end thereof perpendicularly to the axis of the short pipe, and these are integrally cast by gun metal. Copper pipe fixing metal fittings characterized by the above. 2. The short pipe and the fixed piece are connected by a reinforcing piece which stands upright from the fixed piece, and the reinforcing piece is cast integrally with the short pipe and the fixed piece with gun metal. The copper pipe fixing metal fitting according to 1. 3. The copper pipe fixing metal fitting according to claim 1, wherein the fixing piece is provided with a bolt insertion hole near an end far from the short pipe.