JP2016075063A - Vibration-proof ceiling hanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-proof ceiling hanger with inexpensive structure capable of effectively suppressing noise.SOLUTION: A vibration-proof ceiling hanger 1 is used to fix a ceiling structure member 3, which constitutes a downstairs ceiling, under a floor structure member 2, which constitutes an upstairs floor in a wooden building. The vibration-proof ceiling hanger 1 has a rod-like body part 11 made of timber and a vibration-proof member 112 with elasticity. The vibration-proof member 112 is sandwiched between the floor structure member 2 and the body part 11, or the ceiling structure member 3 and the body part 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vibration-proof hanging tree used for a wooden building.

In recent years, in rental housing and the like, troubles related to noise between the upper and lower floors due to the living sound on the upper floor being transmitted downstairs have increased. In particular, wooden structures are prone to sound problems due to their structure.
In a wooden building with upper and lower floors, the ceiling material on the lower floor is fixed to a beam that supports the floor surface of the upper floor using a plurality of suspension trees. Therefore, when vibration due to walking or the like is applied to the floor on the upper floor, the vibration is transmitted to the ceiling material on the lower floor through the suspended tree. When vibration is transmitted to the ceiling material, the ceiling material acts as a diaphragm in the speaker and is transmitted as noise to the lower floor.

  In order to suppress the transmission of vibration between the upper and lower floors and reduce noise, for example, a suspension tree shown in Patent Document 1 has been proposed. The suspended tree of Patent Document 1 includes a suspension stopper connected to a beam, a receiving plate connected to a ceiling material, and an elastic body disposed between the suspension stopper and the receiving plate. By this elastic body, transmission of vibration is suppressed and noise is reduced.

JP 2007-247229 A

However, the hanging tree of Patent Document 1 has the following problems.
The suspension tree of patent document 1 is suppressing the transmission of the sound to the downstairs by providing an elastic body. On the other hand, the suspension stopper and the receiving plate are made of metal. Metal has higher rigidity than wood generally used as a suspended tree in a wooden building, and easily propagates vibration. Therefore, while suppressing the transmission of vibration by the elastic body, the vibration is easily transmitted in the suspension stopper and the receiving plate, and the entire suspension tree cannot sufficiently obtain the effect of suppressing the transmission of vibration.
Moreover, since the suspension stopper and the receiving plate are formed of a plurality of metal parts, the material cost and the manufacturing cost increase, and the suspended tree becomes expensive.

  The present invention has been made in view of such a background, and an object thereof is to provide an anti-vibration suspension tree capable of effectively suppressing noise between upper and lower floors with an inexpensive structure.

One aspect of the present invention is a suspended tree for fixing a ceiling structure member constituting a ceiling of a lower floor to a floor structure member constituting an upper floor of a wooden building,
A rod-shaped body made of wood;
An anti-vibration member having elasticity,
The anti-vibration member is in the anti-vibration hanger, which is sandwiched between the floor structure member and the main body or between the ceiling structure member and the main body.

The anti-vibration suspension tree includes the anti-vibration member sandwiched between the floor structure member and the main body portion or between the ceiling structure member and the main body portion. Therefore, vibration transmitted from the floor structure member to the main body portion or from the main body portion to the ceiling structure member can be attenuated by the elastic vibration-proof member. Thereby, it can suppress effectively that a vibration is transmitted to the said ceiling structure member via the said vibration-proof suspension tree.
Further, the main body is less likely to transmit vibration than metal, and is made of inexpensive wood. Therefore, the vibration suppressing effect of the vibration-proof hanging tree is not impaired, and further, the cost of the vibration-proof hanging tree can be reduced.

  As described above, according to the above-described anti-vibration suspension tree, noise between the upper and lower floors can be effectively suppressed with an inexpensive structure.

Explanatory drawing which shows the vibration proof hanging tree in Example 1. FIG. The A arrow directional view in FIG. Explanatory drawing which shows the test body as a vibration proof hanging tree in a confirmation test. Explanatory drawing which shows the test body as a conventional hanging tree in a confirmation test. Explanatory drawing which shows the vibration proof hanging tree in Example 2. FIG.

  In the vibration-proof hanging tree, it is preferable that the vibration-proof member is disposed on the entire surface of the main body portion facing the floor structure member or the ceiling structure member. In this case, the vibration isolator can be reliably disposed between the main body and the floor structure member, or between the main body and the ceiling structure member. In general, when a ceiling of a lower floor is constructed in a building, the length of the suspension tree is adjusted so as to be cut at the construction site to match the height of the ceiling. At this time, by arranging the anti-vibration member over the entire surface of the main body portion, adjustment of the position of the anti-vibration member accompanying the adjustment of the length of the anti-vibration suspension tree becomes unnecessary. Thereby, the workability of the vibration-proof hanging tree can be improved.

  Moreover, it is preferable that the said vibration-proof member consists of a foam. In this case, the air bubbles formed inside the foam serve as a spring that absorbs vibration, and the vibration damping performance of the vibration isolating member can be improved. In addition, since the bubbles of the foam also serve as a heat insulating layer, the heat insulating function can be imparted to the vibration isolating member. Thereby, it can prevent that heat is transmitted through the said main-body part, and can improve heat insulation. Moreover, since a foam is excellent in workability compared with a solid material, the workability and workability of the said vibration-proof hanging tree can be improved more.

  Moreover, it is preferable that the said vibration-proof member consists of calcium carbonate which mix | blended vinyl chloride resin. It is known that calcium carbonate blended with a vinyl chloride resin softens as the temperature rises. In a house, a thick carpet or the like is sometimes used in winter to suppress the transmission of cold heat from the floor. In this case, the thick carpet absorbs the impact and suppresses the generation of sound. On the other hand, in summer, it is often the case that a floor is exposed without arranging a carpet or the like on the floor, or a thin multi-cover or the like that is easy to obtain a cool feeling is used. Therefore, the problem of noise on the upper and lower floors is more likely to occur in the summer than in the winter. By forming the vibration isolating member from calcium carbonate blended with a vinyl chloride resin, the vibration isolating member is softened in summer when the house is likely to be at a high temperature, and the vibration damping performance of the vibration isolating member is improved. Thereby, as described above, noise can be more effectively suppressed in the summer when noise problems are likely to occur. In addition, calcium carbonate blended with a vinyl chloride resin has a self-extinguishing function and can contribute to prevention of fire spread.

Example 1
An embodiment according to the above-mentioned vibration-proof hanging tree will be described with reference to FIGS. 1 and 2.
As shown in FIGS. 1 and 2, the anti-vibration suspension tree 1 is for fixing a ceiling structure member 3 constituting a lower floor ceiling to a floor structure member 2 constituting an upper floor in a wooden building. is there. The anti-vibration suspension tree 1 has a rod-shaped main body 11 made of wood and an anti-vibration member 112 having elasticity. The vibration isolation member 112 is sandwiched between the floor structure member 2 and the main body 11.

This will be described in more detail below.
As shown in FIGS. 1 and 2, the anti-vibration hanging tree 1 of the present example is a lower floor to a floor structure member 2 that supports the floor of a two-story room that is an upper floor in a two-story wooden building. It is used to fix the ceiling structural member 3 of the first-floor room. The anti-vibration hanging tree 1 can be used between upper and lower floors in a plurality of floors of two or more floors.
The floor structure member 2 that supports the floor of the second-floor room is composed of a plurality of joists 21 and a plurality of beams 22.
The plurality of joists 21 are made of wood processed into a quadrangular prism shape having a rectangular cross section, and are arranged so that the longitudinal direction in the cross section is the vertical direction. The plurality of joists 21 are arranged in parallel to each other so that the longitudinal direction thereof is substantially horizontal, and a floor plate 23 of a two-story room is attached to the upper surface of the joists 21.

  The plurality of beams 22 are made of wood processed into a quadrangular prism shape having a rectangular cross section larger than the joist 21, and are arranged such that the longitudinal direction in the cross section is the vertical direction. The plurality of beams 22 are arranged in parallel to each other so as to be orthogonal to the plurality of joists 21. On the upper surface of the beam 22, a plurality of recesses for arranging the joists 21 are formed.

The ceiling structure member 3 of the first-floor room fixed to the floor structure member 2 by the anti-vibration suspension tree 1 includes a ceiling board 31 arranged in the room of the first-floor room, and a field edge arranged on the upper surface of the ceiling board 31 32, and a field edge receiver 33 that connects the field edge 32 and the anti-vibration suspension tree 1.
The ceiling board 31 consists of a plaster board, and a wallpaper is affixed on the surface arrange | positioned at the room side.

The field edge 32 is formed by assembling quadrangular columnar bars having a rectangular cross section in a lattice shape, and is disposed on the back surface of the ceiling board 31.
The field edge receiver 33 is made of a columnar bar having a rectangular cross section, and is disposed on the upper surface of the field edge 32 so as to be parallel to the beam 22. In the arrangement direction of the plurality of beams 22, the distance between the beam 22 connected by the anti-vibration suspension tree 1 and the field edge 32 is set to be the same as the width of the anti-vibration suspension tree 1.

As shown in FIGS. 1 and 2, the anti-vibration suspension tree 1 includes a main body portion 11 made of wood and an anti-vibration member 112 made of foam.
The main body 11 has a quadrangular prism shape with a rectangular cross section, and is arranged so that the longitudinal direction of the main body 11 is the vertical direction. Further, the longitudinal direction in the cross section of the main body 11 is arranged so as to be parallel to the beam 22 and the edge receiver 33.

The vibration isolator 112 is formed into a sheet made of calcium carbonate containing a vinyl chloride resin. The anti-vibration member 112 has a thickness of 2 to 10 mm. The anti-vibration member 112 is bonded and fixed to the entire surface of the main body portion 11 facing the beam 22.
In this example, the vibration isolation member 112 is formed of calcium carbonate blended with a vinyl chloride resin, but polyurethane foams, polystyrene foams, and the like can also be used.

  The anti-vibration suspension tree 1 fixes the vicinity of the upper end to the beam 22, and the anti-vibration suspension tree 1 is suspended from the beam 22. At this time, the vibration-proof member 112 in the vibration-proof hanging tree 1 is arranged toward the beam 22 side, and is fixed in a state where the vibration-proof member 112 is sandwiched between the main body 11 and the beam 22. Further, the anti-vibration suspension tree 1 is cut to an appropriate length in consideration of the height position of the ceiling board 31. Then, the field edge 32 is suspended by fixing the field edge receiver 33 in the vicinity of the lower end of the anti-vibration suspension tree 1. The field edge receiver 33 is fixed to the surface of the anti-vibration suspension tree 1 opposite to the beam 22 side. In this example, nails were used to fix the beam 22 and the field edge receiver 33 to the vibration-proof hanging tree 1. And the ceiling of the first floor is formed by sticking the ceiling board 31 to the field edge 32 from below.

Next, the effect of this example is demonstrated.
The anti-vibration suspension tree 1 includes an anti-vibration member 112 sandwiched between the floor structure member 2 and the main body 11. Therefore, vibration transmitted from the floor structure member 2 to the main body 11 can be attenuated by the vibration-proof member 112 having elasticity. Thereby, it can suppress effectively that a vibration is transmitted from the vibration-proof suspension tree 1 to the ceiling structural member 3. FIG.
Moreover, the main-body part 11 is formed with the cheap timber which cannot transmit a vibration compared with a metal. Therefore, the vibration suppression effect is not impaired while reducing the cost of the vibration-proof hanging tree 1.

  Further, the vibration isolating member 112 is disposed on the entire surface of the main body portion 11 facing the floor structure member 2. Therefore, the vibration isolating member 112 can be reliably disposed between the main body 11 and the floor structure member 2. In general, when a ceiling of a lower floor is constructed in a building, the length of the suspension tree is adjusted so as to be cut at the construction site to match the height of the ceiling. At this time, by arranging the vibration isolating member 112 over the entire surface of the opposing surface 111 in the main body 11, it is not necessary to adjust the arrangement position of the vibration isolating member 112 in accordance with the length adjustment of the vibration isolating suspension 1. Thereby, the workability of the vibration-proof hanging tree 1 can be improved.

  The vibration isolator 112 is made of a foam. Therefore, the bubbles formed inside the foam serve as a spring that absorbs vibration, and the vibration damping performance of the vibration isolation member 112 can be improved. In addition, since the bubbles of the foam also serve as a heat insulating layer, the heat insulating function can be imparted to the vibration isolation member 112. Thereby, it can prevent that heat is transmitted through the main-body part 11, and can improve heat insulation. Moreover, since a foam is excellent in workability compared with a solid material, the workability and workability of the vibration-proof hanging tree 1 can be improved more.

  The vibration isolator 112 is made of calcium carbonate blended with a vinyl chloride resin. Calcium carbonate blended with vinyl chloride resin softens as the temperature rises. Here, a thick carpet or the like may be used in winter to suppress the transmission of cold heat from the floor. In this case, the thick carpet absorbs the impact and suppresses the generation of sound. On the other hand, in summer, it is often the case that a floor is exposed without arranging a carpet or the like on the floor, or a thin multi-cover or the like that is easy to obtain a cool feeling is used. Therefore, the problem of noise on the upper and lower floors is more likely to occur in the summer than in the winter. By forming the vibration-proof member 112 from calcium carbonate blended with vinyl chloride resin, the vibration-proof member 112 is softened in summer when the house is likely to be hot, and the vibration-damping property of the vibration-proof member 112 is improved. Thereby, as described above, noise can be effectively suppressed even in the summer when noise problems are likely to occur. In addition, calcium carbonate blended with a vinyl chloride resin has a self-extinguishing function and can contribute to prevention of fire spread.

  As described above, according to the vibration-proof hanging tree 1 of this example, noise can be effectively suppressed with an inexpensive structure.

(Confirmation test)
In this confirmation test, a confirmation test of the vibration damping effect and a fixed strength confirmation test were performed on the vibration-proof suspension tree and the conventional suspension tree.
As shown in FIG. 3 and FIG. 4, the test body 101 and the test body 102 as the anti-vibration suspension tree 1 and the test body 103 as the suspension tree that does not include the conventional anti-vibration member 112 are used for this test. It was.

As shown in FIG. 3, the test body 101 and the test body 102 are provided with a main body 11 having a rectangular shape with a cross-sectional shape of 40 mm × 30 mm, and a protection surface 111 disposed on a facing surface 111 facing the beam 22 as a floor structure. And a vibration member 112. The thickness t of the vibration isolation member 112 in the test body 101 is 5 mm, and the thickness t of the vibration isolation member 112 in the test body 102 is 10 mm. Other configurations are the same as those of the anti-vibration suspension tree 1 of the first embodiment.
As shown in FIG. 4, the test body 103 is made of rod-shaped wood having a rectangular shape with a cross-sectional shape of 40 mm × 30 mm, and does not include the vibration isolation member 112.

  The test bodies 101 to 103 are fixed to the beam 22 using two iron round nails 24 having a diameter of 3.4 mm and a total length of 75 mm. The test body 101 and the test body 102 are driven with the iron round nail 24 until the vibration isolation member 112 comes into contact with the beam 22, and the depth of driving into the beam 22 when the test body 101 is fixed to the beam 22 is as follows. It is 40 mm, and the depth of driving into the beam 22 when the specimen 102 is fixed to the beam 22 is 35 mm. Further, when the test body 103 is fixed to the beam 22, the driving depth into the beam 22 is 45 mm.

(Confirmation test of damping effect)
The test body 102 and the test body 103 were used for the vibration damping effect confirmation test. The test condition is that a shock / vibration data logger is attached to the test body 102 and the test body 103, and a weight having a weight of 100 g is dropped from a position having a height of 20 cm with respect to the upper surface of the beam 22 toward the center of the beam 22. . At this time, the impact amount (G (m / s ² )) transmitted to the test body 102 and the test body 103 was measured by an impact / vibration data logger. In addition, the measurement of an impact amount takes the average value performed 10 times each in the test body 102 and the test body 103.

As a result of the confirmation test of the vibration damping effect, the average value of the impact amount in the test body 102 was 6.49 G (m / s ² ). Moreover, the average value of the impact amount in the test body 103 was 10.71 G (m / s ² ). Thereby, it was confirmed that the anti-vibration suspension tree 1 provided with the anti-vibration member 112 is superior in vibration damping properties compared to the conventional suspension tree.

(Fixed strength confirmation test)
The test body 101 to the test body 103 were used in the fixing strength confirmation test. The fixing strength of the test body 101 to the test body 103 was determined by a resistance force when the lower ends of the test body 101 to the test body 103 fixed to the beam 22 were pulled downward.

As a result of the fixing strength confirmation test, the resistance force of the test body 101 was 314 kgf. Moreover, the resistance force in the test body 102 was 237 kgf. Moreover, the resistance force in the test body 103 was 389 kgf.
From this result, the anti-vibration suspension tree 1 has a lower fixing strength than the conventional suspension tree that does not have the anti-vibration member 112. However, since about four suspension trees are provided per 1 m ² , even the test body 102 having the lowest fixing strength can withstand a weight of 951 kg / m ² . Since the weight of the ceiling structure is regulated to 11 kg / m ² or less, it can be said that even the vibration-proof suspended tree 1 including the vibration-proof member 112 has sufficient fixing strength.

(Example 2)
In this example, as shown in FIG. 5, the configuration of the anti-vibration suspension tree 1 is partially changed.
In the anti-vibration hanging tree 1 of the present example, the anti-vibration member 112 is disposed on the surface of the main body 11 on the side edge receiver 33 side.
Other configurations are the same as those of the first embodiment.
Also in this example, the same effects as those of the first embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1 Anti-vibration hanging tree 11 Main part 112 Anti-vibration member 2 Floor structure member 3 Ceiling structure member

Claims (4)

A suspended tree for fixing a ceiling structural member constituting a ceiling of a lower floor to a floor structural member constituting an upper floor of a wooden building,
A rod-shaped body made of wood;
An anti-vibration member having elasticity,
The anti-vibration suspension tree is characterized in that the anti-vibration member is sandwiched between the floor structure member and the main body portion or between the ceiling structure member and the main body portion.   The anti-vibration suspension tree according to claim 1, wherein the anti-vibration member is disposed on an entire surface of the main body portion facing the floor structure member or the ceiling structure member.   The anti-vibration hanging tree according to claim 1 or 2, wherein the anti-vibration member is made of a foam.   The anti-vibration suspension tree according to claim 3, wherein the anti-vibration member is made of calcium carbonate mixed with a vinyl chloride resin.

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