JPH0141810Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a support structure for a drain pipe for discharging sewage, gray water, etc. in buildings such as housing complexes and hotels.

(Prior Art) Conventionally, when a drainage collecting pipe as a drainage pipe is fixedly supported on a concrete floor, as shown in FIG. A large insertion hole 3 is formed, a drainage collecting pipe 2 is inserted into the insertion hole 3, a branch pipe 4 of the collecting pipe 2 is brought into contact with the floor 1, and the inner peripheral surface of the insertion hole 3 and the outer peripheral surface of the collecting pipe 2 are brought into contact with each other. Backfilling mortar 5 or concrete as a backfilling hardening material was filled into the gap between the backfilling and hardening material, and the collecting pipe 2 was fixedly supported on the floor 1 by being hardened.

(Problems to be Solved by the Invention) According to the support structure of the drainage collecting pipe 2, the sound of drainage flowing inside the drainage collecting pipe 2 is solidly propagated to the concrete floor 1 via the backfilling mortar 5, and There was a lot of noise.

(Means for solving the problem) Therefore, the present invention aims to prevent drainage sound from propagating into the living room, and the technical means is to install drainage through holes provided in the concrete floor of the building. In a drain pipe support structure in which a pipe is inserted and fixedly supported by filling a gap between the insertion hole and the drain pipe with a backfill hardening material, there is a barrier between the concrete floor and the backfill hardening material. A vibration member is interposed,
A projecting portion such as a branch pipe on the drain pipe side is placed and supported on an outwardly projecting support flange provided on the upper part of the vibration isolating member.

(Function) According to the present invention, the sound of drainage water flowing down the drain pipe is fixedly propagated to the hardened backfilling material, but after being buffered by the vibration isolating member, it propagates to the concrete floor. This means that the noise that is transmitted into the living room through the noise is significantly reduced.

(Embodiment) Hereinafter, the first embodiment of the present invention will be described based on the drawings. In FIG.
3, the upper collecting pipe 12 has a branch pipe 15 protruding from the side of the main pipe 14, and a drainage standpipe 16 and a side branch pipe 17 are connected to the upper part of the main pipe 14 and the end of the branch pipe 15, respectively. Connection portions 18 and 19 are provided, respectively. In addition, the lower collecting pipe 13 has branch pipes 21 and 22 protruding from both sides of the main pipe 20, respectively, and connecting portions 25 and 26 to which side branch pipes 23 and 24 are connected to the ends of the branch pipes 21 and 22, respectively. Each is provided. Said main pipe 2
A socket part 27 is provided at the upper end of the upper collecting pipe 12, and a pushing ring 28 and a packing 2 are provided at the lower end of the main pipe 14 of the upper collecting pipe 12.
9 is fitted onto the outside, and its lower end is inserted into the socket part 27, and the flange part 30 at the upper end of the socket part 27 and the press ring 28 are fastened with bolts 31 and nuts 32. And the concrete floor of the building 33
A vibration isolating member 35 made of approximately cylindrical vibration isolating rubber or the like is fitted tightly into the inner peripheral surface of the insertion hole 34 formed in the hole 34, and the upper end of the vibration isolating member 35 has a projecting shape. A support flange portion 36 is provided, and the lower surface of the support flange portion 36 is in contact with the upper surface of the concrete floor 33 at the peripheral edge of the insertion hole 34. Further, the lower collecting pipe 13 of the drainage collecting pipe 11 is connected to the vibration isolating member 3.
5 is inserted through the lower collecting pipe 13.
The connecting portions 25 and 26 of the branch pipes 21 and 22 are supported in a mounted manner on the upper surface of the support flange portion 36. The outer peripheral surface of the lower collecting pipe 13 and the vibration isolating member 3
5 is filled with backfill mortar 37, concrete, etc. as a backfill hardening member, and the drainage collecting pipe 11 is connected to the concrete floor 33.
Fixedly supported. Further, the lower end portion of the lower collecting pipe 13 is connected to a connecting portion 39 of a drainage standpipe 38.

Next, to show an example of the construction, as shown in FIG. 2, concrete is poured with the box 40 fitted with the vibration isolating member 35 embedded therein to form a concrete floor 33. After the concrete hardens, the box 40 is removed, as shown in Figure 3.
A state is obtained in which the vibration isolating member 35 is installed in the insertion hole 34 of the concrete floor 33, and as shown in FIG. 4, the vibration isolating member 3 is inserted into the lower collecting pipe 13 from above.
5, and backfill mortar 37 is placed in the gap between the lower collecting pipe 13 and the vibration isolating member 35.

Incidentally, the vibration isolating member 35 may be attached after the box 40 is simply embedded, concrete is poured, and the box 40 is removed after hardening.

The first embodiment of the present invention is constructed as described above, and the sound of drainage water flowing down inside the drainage collecting pipe 11 is propagated to the backfilling mortar 37 as in the conventional case, but the backfilling mortar 37 and concrete Since the vibration isolating member 35 is interposed between the concrete floor 33 and the floor 33, vibrations propagated through the backfilling mortar 37 are buffered by the vibration isolating member 35 and then propagated to the concrete floor 33. The propagation of vibrations caused by drainage sound to the concrete floor 33 is greatly reduced, and therefore, the noise propagated into the living room through the concrete floor 33 can be significantly reduced. For example, some anti-vibration rubbers reduce the propagation of sound pressure levels from 500 Hz to 8 KHz, significantly reducing unpleasant noise in living rooms. The vibration isolating member 35 may be made of vibration isolating rubber such as natural rubber or synthetic rubber, or a flexible resin that buffers the propagation of vibrations. In addition, each branch pipe 21, 22 of the lower collecting pipe 13 is placed on the support flange part 36 of the vibration isolating member 35 to support the weight of the drainage collecting pipe 11, etc., and the noise from the supporting part is It is also possible to prevent the spread of water, and it is also easy to install.

FIG. 5 shows a second embodiment, in which a support bracket 41 of a drainage collecting pipe 11 is supported on a support flange portion 36 of a vibration isolating member 35, and hole-in anchors 42 are provided at predetermined intervals in the circumferential direction. It is fastened and fixed.

In each of the above embodiments, the lower collecting pipe 13 is shown as having the branch pipes 21 and 22, but it may have a structure without the branch pipes 21 and 22. , it may just be a drain pipe. In this case, the support bracket 41 may be used as appropriate.

(Effect of the invention) According to the invention, the sound of drainage water flowing down the drain pipe is solidly transmitted to the hardened backfill material, but a vibration isolating member is interposed between the hardened backfill material and the concrete floor. Since the vibration propagated by the vibration isolating member is buffered and then propagated to the concrete floor, the propagation of vibration caused by drainage sound to the concrete floor is greatly reduced. The noise propagated into the living room can be significantly reduced, and the noise inside the living room can be prevented. Further, since the drain pipe is placed and supported on the support flange portion of the vibration isolating member, there is an advantage that propagation of noise from the drain pipe support portion can also be prevented.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing the first embodiment of the present invention;
Figures 2 to 4 are construction explanatory drawings, and Figure 5 is the same construction illustration.
A sectional side view showing the embodiment, and FIG. 6 is a side view showing a conventional example. 11...Drainage collecting pipe, 12...Upper collecting pipe, 1
3... Lower collecting pipe, 21, 22... Branch pipe, 33...
... Concrete floor, 34 ... Insertion hole, 35 ... Vibration isolating member, 36 ... Support flange portion, 37 ... Backfill hardening material.

Claims (1)

[Scope of utility model registration request] In a support structure for a drain pipe, the drain pipe is inserted into an insertion hole provided in a concrete floor of a building, and the gap between the insertion hole and the drain pipe is fixedly supported by filling the gap between the insertion hole and the drain pipe with a hardening material. A vibration isolating member is interposed between the concrete floor and the hardened backfill material, and a branch pipe on the drain pipe side is placed on an outwardly projecting support flange provided on the upper part of the vibration isolating member. A support structure for a drain pipe, characterized in that an overhanging portion is placed and supported.