JP4709041B2 - Vibration control device - Google Patents

Description

  The present invention relates to a vibration damping device provided between adjacent floor support members of a building floor.

  The floor impact sound is a light impact sound that is a relatively light and hard impact sound, such as a normal human walking sound, a falling sound of an object, and a heavy and dull impact sound that occurs when a child jumps. There is a heavy impact sound.

  Lightweight impact sound can be reduced to some extent by laying a carpet or the like on the floor finish surface to absorb the impact, and it is easy to take measures even at an individual level. Also, in the flooring itself, measures such as laying a foamed cushioning member or the like between the floor slab or a floating floor structure that supports the lower plate of the flooring with elastic legs are tried. (See, for example, Patent Document 1).

On the other hand, with respect to heavy impact sound, floor vibration generated by impact can be attenuated by increasing floor thickness and increasing weight and rigidity, so that heavy floor impact sound transmitted to the lower floor can be reduced. It has been known.
Japanese Patent Laid-Open No. 10-259658

However, when reducing the weight impact sound, for example, in a detached house, etc., adopting a method that increases the floor thickness, the fixing strength of structural members such as columns, beams, walls, etc. to the floor is increased more than necessary, The rigidity of the structural member member itself has to be increased, and there are cases where problems such as an increase in cost are caused.
For this reason, there has been a demand for the development of a technique that can effectively dampen the vibration generated on the floor by impact without increasing the floor thickness.

  The object of the present invention is to effectively reduce the vibration by effectively using the vibration damping function from the small deformation of the floor due to the impact, thereby significantly reducing the weight impact sound transmitted to the lower floor. An object of the present invention is to provide a possible vibration damping device.

In the vibration damping device A provided between the floor support members 1a and 1a adjacent to each other in the building floor 1, for example, as shown in FIGS.
A pair of support portions 2, 2 provided on the adjacent floor support members 1a, 1a;
Of these support portions 2, 2, a first swing body 3 rotatably attached to one support portion 2, a second swing body 4 rotatably attached to the other support portion 2,
A connecting shaft portion 5 that rotatably connects the first rocking body 3 and the second rocking body 4 at an intermediate portion between the adjacent floor support members 1a and 1a;
By forming at least one of the first and second oscillating bodies 3, 4 extending in the length direction from the connecting shaft portion 5, a part of the first oscillating body 3 and the second oscillating body 4 is formed. The two are arranged in parallel,
A vibration damping means 6 (6a, 6b) fixed to both the first and second oscillating bodies 3 and 4 is provided in the overlapping portion.

  Here, as the vibration damping means 6 (6a, 6b), a damping member comprising a spring and a damper, rubber, an oil damper, a viscoelastic material, or the like is preferably used, and further, the vibration may be attenuated by friction. . Further, the pair of support portions 2 and 2 and the first and second rocking bodies 3 and 4 may be incorporated in a newly built building or may be incorporated as a reform in an existing building.

According to the first aspect of the present invention, in order to effectively use the vibration damping function from the small deformation of the floor 1 due to the impact, the deformation of the floor 1 is amplified by using the principle of the lever and the vibration damping means 6 (6a, 6b). Thereby, the vibration generated in the floor 1 due to the impact can be effectively attenuated, and the weight impact sound transmitted to the lower floor can be remarkably reduced.
That is, when the floor 1 is deformed by an impact such as jumping or running of a child, the adjacent floor support members 1a and 1a are displaced up and down, and accordingly, the pair of support portions 2 and 2 are displaced up and down. To do. When the pair of support portions 2 and 2 are displaced up and down, the first and second oscillating bodies 3 and 4 oscillate relatively around the connecting shaft portion 5 and are longer than the connecting shaft portion 5. At least one end of the first and second oscillating bodies 3 and 4 formed extending in the vertical direction is amplified in vibration, and thereby the displacement of the floor support members 1a and 1a is amplified. Accordingly, since the deformation of the vibration damping means 6 (6a, 6b) fixed to both the first and second oscillators 3 and 4 can be amplified, the vibration damping function can be effectively operated from a small deformation of the floor 1. .

The invention according to claim 2 is the vibration damping device A according to claim 1, for example, as shown in FIGS.
At least one of the first and second oscillating bodies 3 and 4 has a weight 7 (7a, 7a, 7b) is fixed.

  According to the second aspect of the present invention, at least one of the first and second oscillating bodies 3 and 4 is extended to the extending portion 3a (4a) that extends in the length direction from the connecting shaft portion 5. Since the weight 7 (7a, 7b) is fixed to the end of the), when the floor 1 is deformed by an impact, the weight 7 (7a, 7b) is centered on the connecting shaft portion 5 as described above. The floor supporting members 1a and 1a are displaced in the opposite direction to the displacement of the floor supporting members 1a and 1a, and are further displaced by the inertial force. As a result, the deformation of the vibration damping means 6 (6a, 6b) can be further amplified, so that the vibration of the floor 1 due to impact can be more effectively damped.

The invention according to claim 3 is the vibration damping device A according to claim 2, for example, as shown in FIGS.
The weight 7 (7a, 7b) is arranged at a position farther from the connecting shaft part 5 than the vibration damping means 6 (6a, 6b).

  According to invention of Claim 3, since the said weight 7 (7a, 7b) is arrange | positioned in the position spaced apart from the said connection shaft part 5 rather than the said vibration damping means 6 (6a, 6b), The deformation of the vibration damping means 6 (6a, 6b) is further amplified as compared with the case where the weight 7 (7a, 7b) is arranged at the same position as the vibration damping means 6 (6a, 6b). it can.

The invention according to claim 4 is the vibration damping device A according to any one of claims 1 to 3, for example, as shown in FIGS.
The first oscillating body 3 and the second oscillating body 4 are formed with holes 3b and 4b for the connecting shaft portion 5 penetrating in the thickness direction. The first oscillating body 3 and the second oscillating body. At least one of the four hole portions 3b and 4b is a long hole elongated in the length direction of the oscillator.

  According to the fourth aspect of the present invention, the floor 1 is deformed by an impact, and the pair of support portions 2 and 2 are displaced accordingly, whereby the first and second oscillators 3 and 4 are Since the pair of supporting portions 2 and 2 and the first and second oscillating bodies 3 and 4 can be prevented from being distorted even if they are relatively swung around the connecting shaft portion 5, vibration damping performance can be prevented. Can be prevented.

The invention according to claim 5 is the vibration damping device A according to any one of claims 1 to 4, for example, as shown in FIGS.
The first oscillating body 3 and the second oscillating body 4 have a substantially U-shaped cross section.

  According to the fifth aspect of the present invention, since the first oscillating body 3 and the second oscillating body 4 are formed in a substantially U-shaped cross section, they are more rigid than those formed in a flat plate shape. Can be increased. As a result, the first oscillating body 3 and the second oscillating body 4 can be made thinner, so that the damping device A itself can be reduced in weight and cost.

According to the present invention, in order to effectively use the damping function from the small deformation of the floor due to the impact, the deformation of the floor is amplified using the lever principle and transmitted to the vibration damping means, and thereby the floor is caused by the impact. Since the generated vibration can be effectively attenuated, it is possible to significantly reduce the weight impact sound transmitted to the lower floor.
Further, since the weight is fixed to at least one of the first and second oscillators at the end of the extended portion formed extending in the length direction from the connecting shaft portion, the floor is deformed by an impact. When this occurs, the weight is displaced in the direction opposite to the displacement of the floor support member around the connecting shaft portion, and is further displaced by its inertial force. As a result, the deformation of the vibration damping means can be further amplified, so that the vibration of the floor due to the impact can be further effectively damped.

  Hereinafter, embodiments of a vibration damping device A according to the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIGS. 1A and 1B, the vibration damping device A of the present embodiment is provided between adjacent floor support members 1a and 1a of the floor 1 of the building,
A pair of support portions 2, 2 provided on the adjacent floor support members 1a, 1a;
Of these support portions 2, 2, a first swing body 3 rotatably attached to one support portion 2, a second swing body 4 rotatably attached to the other support portion 2,
A connecting shaft portion 5 that rotatably connects the first rocking body 3 and the second rocking body 4 at an intermediate portion between the adjacent floor support members 1a and 1a;
By forming the first oscillating body 3 so as to extend in the length direction from the connecting shaft portion 5, a part of the first oscillating body 3 and the second oscillating body 4 are arranged to overlap each other in parallel. And
A vibration damping means 6a fixed to both the first and second oscillators 3 and 4 is provided in the overlapping portion.

  The vibration damping device A of the present embodiment is provided between the adjacent floor support members 1a and 1a, but the installation location is not limited to one location, and is installed at a plurality of locations. The vibration damping device A of the present embodiment is assumed to be provided between floor support members 1a and 1a that particularly support the floor 1 of the upper floor.

  Here, the floor support member 1a of the present embodiment is a so-called small beam, spanned between large beams (not shown), and a floor plate 1b is provided on the upper portion thereof, and adjacent floor support members are provided. A vibration damping device A is provided between 1a and 1a.

  That is, the pair of support portions 2 and 2 are provided on the adjacent floor support members 1a and 1a. These support portions 2 and 2 are not provided to be completely opposed to each other by arranging a part of the first and second oscillating bodies 3 and 4 overlapped in parallel, and are slightly displaced in the horizontal direction. Is provided.

  The support portions 2 and 2 include a plate portion 2a fixed in contact with the adjacent floor support members 1a and 1a, and a mounting plate portion 2b to which the first and second oscillators 3 and 4 are attached. The plate portion 2a and the mounting plate portion 2b are integrally formed. Further, the mounting plate portion 2b is formed with an insertion hole 2c through which a connecting bolt 8 for connecting the mounting plate portion 2b and the first and second oscillating bodies 3 and 4 is inserted.

  Further, through holes 3c and 4c are formed in the respective end portions of the first and second oscillating bodies 3 and 4, and when the pivot bolt 8 is inserted, these first and second oscillating bodies are provided. 3 and 4 are rotatably attached to the pair of support portions 2 and 2.

Further, the first and second oscillating bodies 3 and 4 are formed with holes 3b and 4b for the connecting shaft 5 penetrating in the thickness direction. Further, at least one of the hole portions 3b and 4b of the first and second oscillating bodies 3 and 4 is a long hole that is long in the length direction of the oscillating body. In the present embodiment, it is assumed that an elongated hole is formed in the second oscillator 4.
This is because the floor 1 is deformed by an impact, and the pair of support portions 2 and 2 are displaced accordingly, so that the first and second rocking bodies 3 and 4 are relatively centered on the connecting shaft portion 5. This is to prevent the pair of support portions 2 and 2 and the first and second swinging bodies 3 and 4 from being distorted when they are swung.

  And the connection shaft part 5 (connection bolt) is penetrated by such hole part 3b, 4b, and, thereby, the said 1st and 2nd rocking bodies 3, 4 are mutually adjacent floor support members 1a, 1a. Are connected so as to be relatively rotatable at an intermediate portion thereof.

Further, the first oscillating body 3 of the present embodiment is formed so as to extend in the length direction from the connecting shaft portion 5. As a result, the extended portion 3a of the first oscillating body 3 and the second oscillating body 4 are arranged to overlap in parallel.
And the vibration damping means 6a fixed to both the extension part 3a of these 1st rocking bodies 3 and the 2nd rocking body 4 is provided in the overlapping part in this way.

In addition, as shown in FIG. 1B, the vibration damping means 6a of the present embodiment has a rectangular plate-like viscoelastic body 6a fixed to two plates 9, 9 by vulcanization adhesion or adhesive. By fixing the two plates 9, 9 to the extended portion 3a of the first oscillating body 3 and the second oscillating body 4, the first oscillating body 3 and the second oscillating body 3 are fixed. A vibration damping means 6 a is provided for the moving body 4.
The viscoelastic body 6a can absorb vibration energy more efficiently and exhibit a large damping force because the energy absorption performance is proportional to the amount of deformation.

  Further, the two plates 9, 9 are formed with holes 9a, 9a for the connecting shaft 5 penetrating in the thickness direction, and at least one of the holes 9a, 9a is Like at least one of the hole portions 3b and 4b of the first and second oscillating bodies 3 and 4, it is a long hole elongated in the length direction of the oscillating body.

  On the other hand, a weight 7 a is fixed to the end of the extended portion 3 a of the first rocking body 3. That is, when the floor 1 is deformed by an impact, the weight 7a is displaced in the direction opposite to the displacement of the floor support members 1a and 1a around the connecting shaft portion 5, and is further displaced by the inertial force. To do. As a result, the deformation of the vibration damping means 6a can be further amplified, so that the vibration of the floor 1 due to the impact can be further effectively damped.

  Further, the weight 7a is disposed at a position farther from the connecting shaft portion 5 than the vibration damping means 6a, and the weight 7a is disposed at the same position as the vibration damping means 6a. In comparison, the deformation of the vibration damping means 6a can be further amplified.

  The first and second oscillating bodies 3 and 4 have a substantially U-shaped cross section when the first and second oscillating bodies 3 and 4 are viewed along the length direction. The rigidity can be increased as compared with the case of being formed in a flat plate shape. As a result, the first and second oscillating bodies 3 and 4 can be formed of a thinner steel plate or the like, so that the vibration damping device A itself can be reduced in weight and cost.

  Next, with regard to the operating state of the vibration damping device A as described above, first, the floor 1 is deformed by an impact applied by a child jumping or the like. In this case, the adjacent floor support members 1a and 1a are displaced up and down, and the pair of support portions 2 and 2 are displaced up and down accordingly.

  Then, the first and second oscillating bodies 3 and 4 rotatably attached to the pair of support portions 2 and 2 oscillate so as to rotate relative to the connecting shaft portion 5, and The shake at the end of the extended portion 3a of the first rocking body 3 is amplified. Thereby, the displacement between the floor support members 1a and 1a is amplified.

  Therefore, since the deformation of the vibration damping means 6a fixed to both the first and second oscillators 3 and 4 can be amplified, the vibration damping function can be effectively operated from the small deformation of the floor 1.

  Furthermore, since the deformation speed of the viscoelastic body 6a which is the vibration damping means 6a can be amplified from the deformation speed of the floor 1, energy can be more efficiently absorbed by the viscoelastic body 6a whose energy absorption performance is proportional to the deformation speed. It can absorb and exert a great damping force.

  A cylindrical spacer (not shown) may be extrapolated to the connecting bolt 5 in the overlapping portion of the first and second oscillators 3 and 4. That is, by extrapolating the spacer to the connecting bolt in this way, the thickness of the viscoelastic body 6a, which is the vibration damping means 6a, is kept constant. That is, when the viscoelastic body 6a is deformed, its thickness is kept constant and does not become thinner or thicker, so that vibration can be reliably damped.

  Further, the vibration damping device A of the present embodiment as described above can attenuate vibrations and reduce heavy impact sound, and is also effective when a building is pitched due to an earthquake or other vibration. It is possible to demonstrate.

According to the present embodiment, in order to effectively use the damping function from a small deformation of the floor 1 due to an impact, the deformation of the floor 1 is amplified and transmitted to the vibration damping means 6a using the lever principle, thereby Since the vibration generated on the floor 1 due to the impact can be effectively attenuated, it is possible to significantly reduce the weight impact sound transmitted to the lower floor.
Further, since the weight 7a is fixed to the end portion of the extended portion 3a formed in the first oscillating body 3 so as to extend in the length direction from the connecting shaft portion 5, the floor 1 is deformed by an impact. In this case, the weight 7a is displaced in the direction opposite to the displacement of the floor support members 1a and 1a with the connecting shaft portion 5 as the center, and is further displaced by the inertial force thereof. Thereby, the deformation of the vibration damping means 6a can be further amplified, so that the vibration of the floor 1 due to the impact can be further effectively damped.

(Second Embodiment)
2A and 2B show the second embodiment. In the first embodiment, the first oscillating body 3 is formed so as to extend in the length direction from the connecting shaft portion 5, but in the second embodiment, not only the first oscillating body 3, Similarly, the second oscillating body 4 is formed to extend in the length direction from the connecting shaft portion 5. For convenience of explanation, only components that are different from the first embodiment described above will be described.

  That is, in the present embodiment, the first oscillating body 3 and the second oscillating body 4 are formed to extend in the length direction from the connecting shaft portion 5. Therefore, the extending portion 3a of the first oscillating body 3 and the second oscillating body 4 are arranged to overlap each other in parallel, and the extending portion 4a of the first oscillating body 3 and the second oscillating body 4 is arranged in parallel. It will be arranged to overlap.

  Then, in the overlapping portion, the vibration damping means 6a fixed to both the extended portion 3a of the first oscillating body 3 and the second oscillating body 4, the first oscillating body 3 and the second oscillating body. 4 is provided with vibration damping means 6b fixed to both of the four extending portions 4a.

  In addition, as shown in FIG. 2B, the vibration damping means 6a, 6b according to the present embodiment has a rectangular plate-like viscoelastic body 6a, 6b vulcanized or bonded to two plates 90, 90. The first rocking body 3 and the second rocking body 4 are fixed to the first rocking body 3 and the second rocking body 4 by fixing the two plates 90 and 90 to each other. In contrast, vibration damping means 6a and 6b are provided.

  On the other hand, weights 7a and 7b are fixed to the end portions of the extending portions 3a and 4a of the first rocking body 3 and the second rocking body 4, respectively. Thus, when the floor 1 is deformed by an impact, the weights 7a and 7b are displaced in the direction opposite to the displacement of the floor support members 1a and 1a around the connecting shaft portion 5, and the inertial force thereof. Further displacement by. Therefore, the deformation of the vibration damping means 6a and 6b can be further amplified, and the vibration of the floor 1 due to the impact can be further effectively damped.

  Further, the weights 7a and 7b are arranged at a position farther from the connecting shaft portion 5 than the vibration damping means 6a and 6b, and the weights 7a and 7b are arranged at positions where the vibration damping means 6a and 6b are arranged. As compared with the case where they are arranged at the same position, the deformation of the vibration damping means 6a, 6b can be further amplified.

As described above, according to the present embodiment, the second oscillating body 4 is formed so as to extend in the length direction from the connecting shaft portion 5, so that the first and second oscillating bodies 3, 4 are formed. The weights 7a and 7b are fixed to the end portions of both the extended portions 3a and 4a, whereby the deformation of the vibration damping means 6a and 6b can be further amplified, and the vibration of the floor 1 due to the impact can be further improved. It is possible to attenuate.
As a result, the vibration generated in the floor 1 due to the impact can be more effectively damped, so that the weight impact sound transmitted to the lower floor can be significantly reduced.
Further, weights 7a and 7b are fixed to both ends of the extended portions 3a and 4a formed in the first and second oscillators 3 and 4 so as to extend in the length direction from the connecting shaft portion 5. Therefore, when the floor 1 is deformed by an impact, the weights 7a and 7b are displaced in the direction opposite to the displacement of the floor support members 1a and 1a with the connecting shaft portion 5 as a center. Displace. As a result, the deformation of the vibration damping means 6a and 6b can be further amplified, so that the vibration of the floor 1 due to the impact can be attenuated more effectively.

The structure of 1st Embodiment of the damping device which concerns on this invention is shown, (a) is a front view, (b) is a top view. The structure of 2nd Embodiment of the damping device which concerns on this invention is shown, (a) is a front view, (b) is a top view.

Explanation of symbols

A Damping device 1 Floor 1a Floor support member 2 Support part 3 First rocking body 4 Second rocking body 5 Connecting shaft part 6 Vibration damping means 7 Weight

Claims (5)

In the vibration damping device provided between adjacent floor support members of the building floor,
A pair of support portions provided on the adjacent floor support members;
Of these support parts, a first rocking body rotatably attached to one support part, a second rocking body rotatably attached to the other support part,
A connecting shaft portion that rotatably connects the first rocking body and the second rocking body at an intermediate portion between the adjacent floor support members;
By forming at least one of the first and second oscillating bodies extending in the length direction from the connecting shaft portion, the first oscillating body and the second oscillating body partially overlap each other in parallel. Has been placed,
A vibration damping device characterized in that vibration overlapping means fixed to both the first and second rocking bodies is provided in the overlapping portion. The vibration damping device according to claim 1,
A weight is fixed to at least one of the first and second oscillating bodies at an end portion of an extending portion that extends in a length direction from the connecting shaft portion. apparatus. The vibration damping device according to claim 2,
The said weight is arrange | positioned in the position spaced apart from the said connection shaft part rather than the said vibration damping means, The damping device characterized by the above-mentioned. In the damping device as described in any one of Claims 1-3,
The first rocking body and the second rocking body are formed with holes for the connecting shaft portion penetrating in the thickness direction, and at least one of the holes of the first rocking body and the second rocking body is The vibration damping device is a long hole elongated in the length direction of the rocking body. In the damping device as described in any one of Claims 1-4,
The first and second oscillating bodies are formed in a substantially U-shaped cross section.

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