JPS6310014Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a sound insulating device that prevents external sounds from entering the building through the duct in a building having a sound insulating structure equipped with an air conditioning duct.

As is well known, a sound insulation room (a sound insulation structure building) that can block outside sound is used for recording and measuring the characteristics of audio equipment. This sound insulation room is usually sound insulated by constructing the walls of the room with sound-absorbing material, or by supporting the entire room with an elastic material such as rubber and lifting the room from a fixed structure (the structure in which the sound insulation room is installed). I'm trying to get an effect. By the way, in such a sound insulation room, when an air conditioning duct is installed between the fixed structure and the fixed structure, there is a problem that the above sound insulation effect is impaired by the duct. That is, when a duct is installed between the fixed structure and the sound insulation room, external sounds will be transmitted through the duct and enter the sound insulation room. Therefore, conventionally, when installing an air conditioning duct in a sound insulating room, some kind of sound insulating means has been taken to avoid the above problem.

Conventionally, such sound insulation means include, for example, the first
The means shown in FIGS. 2 and 2 are known. In FIG. 1, reference numeral 1 is a fixed structure, 2 and 3 are buildings installed within the fixed structure 1, and 4 is an air conditioning duct. The fixed structure 1 is constructed of reinforced concrete and has two chambers 8 and 9 separated by a side wall 7 between a floor 5 and a ceiling 6. Building 2 is installed on floor 5 in room 8, and building 3 is installed on floor 5 in room 9. Building 2 is constructed as a sound-insulating structure capable of blocking sounds from the outside. That is, building 2
The side wall 10 of the board 11 and the plaster board 12
are arranged at a predetermined interval, and glass wool 13, 1 is placed on the outside of each of these boards 11, 12, respectively.
It has a structure in which glass wool 13 and 14 are attached so that sound from the outside is absorbed by the glass wool 13 and 14. In addition, the ceiling 15, floor 16, etc. are also covered by the side walls 10.
Similarly, it has a structure that absorbs sound from the outside. Also, the floor 5 of the fixed structure 1 and the floor 16 of the building 2
Vibration-proof rubber 18, 18... is interposed between the foundations 17, 17... horizontally suspended on the lower surface, so that the vibration of the floor 5 is not transmitted to the inside of the building 2. There is. Also, the beam girder 19 of the ceiling 15 of building 2
is suspended from the ceiling 6 by a hanging device 20, and in this structure, the hanging device 20 has a vibration isolating rubber 21 that prevents transmission of vibrations. Also duct 4
are the side wall 10 of the building 2 and the side wall 7 of the fixed structure 1.
and the side wall 22 of the building 3.

In the above configuration, the mounting structure of the duct 4 is devised to prevent sound from entering the inside of the building 2. That is, glass wool 24 is adhered to the inner surface of the duct 4, as shown in FIG. A hole 25 in the side wall 7 through which the duct 4 passes is formed to have an inner diameter larger than the outer diameter of the duct 4 by a predetermined dimension, and a sleeve 26 made of an iron plate is fixed in the hole 25 with mortar 27. ing. Between the inner surface of the sleeve 26 and the outer surface of the duct 4 is a ring-shaped anti-vibration rubber 28.
28 and glass wool 29 are interposed. Further, glass wool 30 is attached to the outer peripheral surface of the duct 4 between the side walls 7 and 10 and within the side wall 10.

According to the above-mentioned mounting structure of the duct 4, vibration of the side wall 7 can be prevented from being transmitted to the duct 4 by the vibration isolating rubbers 28, 28 and the glass wool 29. The vibration of the side wall 7 can be prevented from entering the inside of the building 2 through the duct 4, and the glass wool 24, 29, 30
This allows the vibration of the duct 4 to be absorbed by the building 2.
This can prevent them from entering the interior.

However, the above-mentioned sound insulation means has the disadvantage that it cannot accurately insulate the vibration sound propagated to the duct 4, and furthermore, the mounting structure shown in FIG. Since the structure is complex and the installation is sound-insulating, the support tends to be unstable, and there are many disadvantages, especially in terms of poor workability during construction.

In view of the above-mentioned circumstances, this invention is capable of accurately insulating the sound propagated through the ducts in sound-insulating buildings equipped with air conditioning ducts, and is simple and inexpensive to construct. It also provides a sound insulation device that is easy to manage in construction.
In a structure in which a building is installed with a sound insulation structure inside a fixed structure, and an air conditioning duct is penetrated between the fixed structure side and the inside of the building,
The duct is divided at a position inside the fixed structure and outside the building, and one divided duct passing through the fixed structure is fixed and supported directly on the fixed structure, and both A cylindrical member made of rubber is interposed between the opposing ends of the divided ducts to connect them.

Embodiments of this invention will be described below with reference to FIGS. 3 to 7.

FIGS. 3 and 4 are diagrams showing an embodiment of this invention. In addition, in these figures, Figures 1 and 2
Elements that are the same as those shown in the figures are given the same reference numerals. In FIG. 3, a fixed structure 1 and a sound insulation structure building 2 are constructed with the same structure as that shown in FIG. is set up. The duct 4 is divided between the side wall 7 and the side wall 10, with a duct 4a supported on the side wall 7 side and a duct 4b supported on the side wall 10 side.
It is composed of. In this case, the duct 4a is placed in a hole 25 formed in the side wall 7, and is fixedly supported directly on the side wall 7 by mortar 40. If the side wall 7 is a concrete wall, the duct 4a may be directly embedded and fixedly supported during concrete pouring. Further, the duct 4b includes a hole formed in the side wall 10,
That is, boards 11, 12, glass wool 13,
14, the board 11,
It is fixed at 12. And these ducts 4
Opposing ends of a and 4b are connected with a rubber ring (cylindrical member) 41 interposed therein.
To explain in detail the structure of the connecting part of the ducts 4a and 4b, first, each end of the ducts 4a and 4b has a third
Flanges 42a, 4 as shown in FIG.
2b is formed. Flanges 42a, 42b
have bolt holes 43a, 43a..., 43b, respectively.
43b... (Six bolt holes 43a, 43b are each formed in an annular shape, but only a portion of each is shown in the figure). A ring 41 is interposed between the flanges 42a and 42b. Bolt holes 44, 44, . . . are formed in the ring 41, as shown in FIG. And these flanges 42a, 42b
and the ring 41 has bolt holes 43a, 44, 4
They are firmly fixed to each other by tightening a nut 46 to a bolt 45 inserted through 3b. In this case, a washer 48 is interposed between the head 47 of the bolt 45 and the flange 42a so as to be in contact with the head 47, and a rubber spacer 49 is interposed between the washer 48 and the flange 42a. There is. Further, a washer 48 is interposed between the nut 46 and the flange 42b so as to be in contact with the nut 46 in the same manner as described above, and a spacer 49 is interposed between the washer 48 and the flange 42b. Also duct 4
Glass wool 50a, 5 is provided on the inner surface of a, 4b, respectively.
0b is attached.

Next, the operation of the sound insulation device having the above configuration will be explained. First, when the side wall 7 vibrates, this is transmitted to the duct 4a via the mortar 40. Further, the duct 4a may vibrate due to external sounds or the like. However, in the above configuration, even if the duct 4a vibrates, it is possible to prevent this vibration from being transmitted to the duct 4b side. That is, when the duct 4a vibrates, this vibration is transmitted from the flange 42a to the ring 41 and the spacer 49. At this time, the ring 41 and the spacer 49 absorb the above vibration and do not transmit it to the duct 4b side.
In particular, the reason why a rubber ring 41 is used in this invention is to take into consideration both the vibrations that vibrate in the radial direction of the duct 4a and the vibrations that vibrate in the axial direction. Both vibrations can be absorbed by using . Therefore, in the above configuration, it is possible to accurately prevent external sounds, vibrations, etc. from entering the building 2.

In addition, from the viewpoint of workability during construction, since one duct, that is, the duct 4a, is firmly fixed and supported, it is easy to connect the other duct 4b, and above all, the side wall 7 and the duct 4a The fact that it only requires direct fixed support improves work efficiency.

In the above configuration, the ring 41 may be formed so that its inner circumferential surface is flush with the inner circumferential surfaces of the glass wools 50a and 50b, as shown by the two-dot chain line in FIG.

Moreover, FIG. 6 is a diagram showing another embodiment of this invention. In this figure, the same elements as those shown in FIG. 3 are given the same reference numerals. This embodiment differs from the above embodiments in that the ring 4
This is the shape of No. 1 and its mounting structure. That is, in this embodiment, the ring 41 has protrusions 62 and 63 at both ends of the cylindrical portion 61, as shown in FIGS. 6 and 7.
, and bolt holes 64, 64..., 65, 65... are formed in these protrusions 62, 63, respectively. This ring 41 is interposed between the flanges 42a and 42b as in the above embodiment. And the flange 42a and the protrusion 6 of the ring 41
2 means the bolts 6 inserted into each of these bolt holes.
Attach the iron plate 67 to nut 6 and
They are fixed to each other by tightening 8.
Further, the flange 42b and the protrusion 63 of the ring 41 are also fixed by bolts 66, iron plates 67, and nuts 68 in the same manner as described above.

Also in this configuration, the vibrations of the duct 4a are absorbed by the ring 41 and are not transmitted to the duct 4b.
Therefore, the same effects as in the embodiments described above can be obtained.

As explained above, according to this invention, in a structure in which an air conditioning duct passes through a fixed structure and a building installed inside the structure, the duct is separated between the fixed structure and the building. One of the divided ducts passing through the fixed structure is directly fixed and supported by the fixed structure, and the opposing ends of both divided ducts are connected with a cylindrical member made of rubber interposed. Because of this, the sound that tries to penetrate into the interior of the above-mentioned sound insulation structure building through the duct,
Vibrations can be reliably stopped by the cylindrical member, and an excellent sound insulation effect can be obtained. In addition, the installation work is easy because the duct on the fixed structure side only needs to be directly fixed and supported on the structure, and once one of the ducts is in a stable fixed and supported state, the other duct can be connected to the fixed structure. Since it is possible to connect
This also has extremely good workability, and has the following effects: overall construction is simple, construction costs can be reduced, and construction management is easy.

[Brief explanation of the drawing]

Figures 1 and 2 are diagrams for explaining conventionally known sound insulation means, in which Figure 1 is a vertical cross-sectional view of a building with a sound insulation structure installed on a fixed structure, and Figure Fig. 1 is an enlarged view of the main part, Fig. 3 is a vertical sectional view showing an embodiment of this invention, Fig. 4 is an enlarged view of the main part of Fig. 3, and Fig. 5 is shown in Figs. 3 and 4. FIG. 6 is a longitudinal sectional view showing another embodiment of this invention, and FIG. 7 is a perspective view of the ring shown in FIG. 6. 1...Fixed structure, 2...Sound insulation structure building, 4
...Duct, 4a, 4b...Duct, 41...Ring (elastic body).

Claims (1)

[Scope of utility model registration request] In a structure in which a building is installed with a sound insulation structure inside a fixed structure, and an air conditioning duct is passed through between the fixed structure side and the inside of the building, the duct is connected to the fixed structure. The structure is analyzed at a location that is both internal and external to the building,
One of the divided ducts passing through the fixed structure is directly fixedly supported by the fixed structure, and the opposite ends of both divided ducts are connected with a cylindrical member made of rubber interposed therebetween. A sound insulation device for a sound insulation structure building characterized by: