JP2000283219A - Vibration control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent forgetting to remove a holding member holding between brackets united to both sides of a hydraulic damper. SOLUTION: This vibration control device 51 is composed of a hydraulic damper 12 damping horizontal vibration, a first bracket 16 united to an end part 14a of a cylinder of the hydraulic damper 12, a second bracket 20 united to an end part 18a of a piston rod 18 of the hydraulic damper 12, a holding member 46 laid between the first bracket 16 and the second bracket 20 and holding both brackets 16, 20 at a specified intervals. The holding member 46 is made from material having small stiffness. Therefore, removing the holding member 46 after setting is not required, and when comparatively large vibration (earthquake) is input, the holding member 46 is cut by horizontal shearing force to make the cylinder 14 and the piston rod 18 of the hydraulic damper 12 relatively displaceable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping device, and more particularly to a vibration damping device configured to absorb vibration energy of a general house and dampen vibration input to a building.

[0002]

2. Description of the Related Art As a means for improving the seismic resistance of a general house such as a wooden house, there has been developed a vibration damping structure in which a hydraulic damper is attached to a brace mounted at a diagonal position of a frame and arranged inside a wall. Is underway. In this vibration damping structure, a hydraulic damper absorbs the vibration energy of an earthquake that attempts to plastically deform the frame between columns, beams, and the like, thereby damping the frame of the structure.

A conventional vibration damping device used for such a vibration damping structure is disclosed, for example, in Japanese Patent Application No. 11-63924 filed by the present applicant (but not known at the time of this application). There are also configurations. FIG. 7 is a front view of one embodiment of the vibration damping device filed by the present applicant earlier. FIG. 8 is a rear view of the vibration damping device. FIG. 9 is a left side view of the vibration damping device.

[0004] As shown in FIGS. 8 and 9, the vibration damping device 11 is configured to be installed in a wall for a general wooden house, and generally includes a hydraulic damper that attenuates horizontal vibrations. 12 and the end 14 of the cylinder 14 of the hydraulic damper 12
a first bracket 16 connected to the hydraulic damper 1
The second connected to the end 18a of the second piston rod 18
And a holding member 22 that is laid between the first bracket 16 and the second bracket 20 on the front side and holds the two brackets 16, 20 at a predetermined interval.

The vibration damping device 11 has a mounting plate 24 made of sheet metal, which is mounted on each of the brackets 16 and 20 during construction.
26 is prepared separately. Each bracket 16, 20
Is formed by bending an iron sheet metal as described later. After the holding member 22 is removed at the installation site, the mounting plates 24 and 26 are mounted. The hydraulic damper 12 includes a cylinder 14 filled with hydraulic oil therein, a piston (not shown) slidably inserted into the cylinder 14, and a piston rod 18 integrally connected to the piston. . The piston slides in the cylinder 14 according to the relative displacement between the cylinder 14 and the piston rod 18. And cylinder 1
The hydraulic oil filled in the piston 4 generates a resistance when the hydraulic oil flows through a narrow passage penetrating the piston as the piston slides, and this resistance acts as a damping force to attenuate the input vibration energy. I do.

The hydraulic damper 12 has a movement amount (stroke) of the piston rod 18 according to a structure to be installed.
Is determined, and the piston rod 18 has moved to the maximum extension position when assembled at the factory. Therefore, in the vibration damping device 11, the position of the piston rod 18 with respect to the cylinder 14 is held at an intermediate position of the entire stroke by holding a sheet metal holding member 22 between the brackets 16 and 20. . In the present embodiment, the holding member 22 is provided with a mounting hole through which the four mounting bolts 25 are inserted (in FIG. 8, hidden behind the mounting bolts 25), and the four mounting bolts are provided. 2
5 fix to the brackets 16 and 20.

As described above, when the vibration damping device 11 is installed in a building, the piston rod 18 is held at the intermediate position with respect to the cylinder 14, so that the transportation operation can be easily performed and the piston rod 18 can be moved. Installation work can be done easily because it does not extend and operate on its own. Further, the vibration damping device 11
Is separate from the panel mounted on the wall, so that it is smaller and lighter than one combined with the panel. For example, one worker (carpenter) can perform the installation work. It is configured.

When the mounting bolts 25 are removed at the time of construction as described later, the holding member 22 is mounted on the bracket 1.
The brackets are separated from the brackets and release the restraint between the brackets. Thus, the hydraulic damper 12 is in a state where the piston rod 18 is operable, and can generate a damping force. The mounting bolt 25 is attached to the bracket 1
Since the nut 27 is screwed onto the nuts 6 and 20, the nut 27 can be tightened or loosened without turning. Therefore, since the mounting bolt 25 can rotate the mounting bolt 25 around the axis from one direction,
Attachment and removal of the holding member 22 can be easily performed.

As shown in FIG. 9, the first bracket 16 is suspended from the front side of the hydraulic damper 12 and
7 is fixed to the holding member mounting portion 16a, and a flat portion 16 formed to extend in the horizontal direction and on which a wooden panel described later is placed.
b, and a panel mounting portion 16c that stands vertically on the rear side of the hydraulic damper 12 and faces the rear side edge of the wooden panel. Further, small holes 28 for inserting nails or wood screws for fixing the wooden panel are provided at predetermined intervals in the panel mounting portion 16c. In the present embodiment, the small holes 28 are provided at nine positions of the panel mounting portion 16c. The end 14 of the cylinder 14 is provided on the lower surface of the flat portion 16b.
The support portion 16d stands upright in a U-shape that supports a.
The support portion 16 d is formed by screwing a bolt 30 and a nut 31 through the end 14 a of the cylinder 14 into the cylinder 1.
4 is connected to the end 14a.

Further, the second bracket 20 is provided with the first bracket 20.
And a holding member mounting portion 20a which is vertically erected on the front side of the hydraulic damper 12 and to which the nut 27 is fixed, and which is formed to extend in the horizontal direction and will be described later. Plane part 2 on which wooden panel is placed
0b, and a panel mounting portion 20c which stands vertically on the rear side of the hydraulic damper 12 and faces the rear side edge of the wooden panel.

Further, small holes 32 for inserting nails or wood screws for fixing the wooden panel are provided at predetermined intervals in the panel mounting portion 20c. In the present embodiment, the small holes 32 are provided at nine positions of the panel mounting portion 20c. The upper surface of the flat portion 20b has a U-shaped support portion 20 supporting the end portion 18a of the piston rod 18.
d is standing. The support portion 20d includes a bolt 30 and a nut 31 penetrating the end portion 18a of the piston rod 18.
To the end 18a of the piston rod 18.

The mounting plates 24 and 26 hold small holes 24a and 26a for inserting nails or wood screws and holes 24b and 26b for inserting mounting bolts 25, similarly to the panel mounting portions 16c and 20c. It is provided at the same predetermined interval as the mounting hole of the member 22. FIG. 10 is a front view showing an installation state of the vibration damping device 11. As shown in FIG.
The vibration damping device 11 includes a pillar 39 erected between the first floor and the second floor, and a lower beam 33 suspended so as to be supported by the first floor.
It is installed in a rectangular wall-shaped space 35 formed by an upper beam 34 laid so as to support the second floor.

In the wall-shaped space 35, the vibration damping device 11 is provided.
Besides, a wooden lower panel 36 fixed to the lower beam 33,
A wooden upper panel 37 fixed to the upper beam 34 is provided, and the vibration damping device 11 is attached so as to be interposed between the lower panel 36 and the upper panel 37. And
The upper panel 37 is fixed with nails or wood screws while the lower edge is sandwiched between the panel mounting portion 16c of the first bracket 16 and the mounting plate 24. Also, lower panel 3
6 is fixed with nails or wood screws while the upper edge is sandwiched between the panel mounting portion 20c of the second bracket 20 and the mounting plate 26.

Therefore, when the vibration caused by the earthquake is transmitted to the floor surface, a relative displacement in the horizontal direction occurs between the lower beam 33 and the upper beam 34, and this vibration is transmitted to the bracket 16 via the upper panel 37 and the lower panel 36. 20. As a result, the hydraulic damper 12 performs the damping operation as described above to absorb the vibration energy, so that the lower beam 33 and the upper beam 34
And the relative displacement between them is reduced. Therefore, the building is prevented from collapsing due to an earthquake or the like.

[0015]

In the vibration damping device 11 configured as described above, after the brackets 16 and 20 and the mounting plates 24 and 26 are fixed to the lower panel 36 and the upper panel 37 by nails or wood screws, It was necessary to loosen the mounting bolt 25 and remove the holding member 22 from the brackets 16 and 20.

For this reason, in the vibration damping device 11, after being installed between the lower panel 36 and the upper panel 37, the holding member 2
Since the work of removing the holding member 22 is performed, the number of man-hours is increased and the installation work time is prolonged, and the removed holding member 22 is discarded. After the installation, the holding member 22
If the user forgets to remove and remains attached, the hydraulic damper 12 cannot perform the damping operation and cannot absorb the vibration energy at the time of the earthquake.

Therefore, an object of the present invention is to provide a vibration damping device that solves the above-mentioned problems.

[0018]

In order to solve the above problems, the present invention has the following features. The present invention provides a hydraulic damper for damping horizontal vibration of a structure, a first bracket connected to a piston rod end of the hydraulic damper for mounting the hydraulic damper, and a cylinder end of the hydraulic damper. A second bracket connected to attach the hydraulic damper, a holding member for mutually holding the first bracket and the second bracket,
And wherein the holding member is cut off when the vibration input to the first bracket and the second bracket is greater than or equal to a predetermined magnitude.

Therefore, according to the present invention, since the holding member for holding the space between the first bracket and the second bracket is cut off by vibration of a predetermined magnitude or more, the cylinder end of the hydraulic damper and the piston When installed with the distance between the rod end portion maintained at a predetermined distance, and when vibration of a predetermined magnitude or more is input after installation,
At that time, the holding member is cut and the damping operation by the hydraulic damper is started to absorb vibration energy.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of one embodiment of a vibration damping device according to the present invention. FIG. 2 is a rear view of the vibration damping device according to the present invention. FIG. 3 is a right side view of the vibration damping device. 1 to 3, the same parts as those in FIGS. 7 to 10 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIGS. 1 to 3, the vibration damping device 51 is configured to be installed in a wall of a wooden general house, and generally has a hydraulic damper for damping horizontal vibrations. 12 and the end 14 of the cylinder 14 of the hydraulic damper 12
a first bracket 16 connected to the hydraulic damper 1
The second connected to the end 18a of the second piston rod 18
, And a holding member 46 which is laid between the first bracket 16 and the second bracket 20 on the front side and holds the two brackets 16, 20 at a predetermined interval.

The holding member 46 has both ends connected to the brackets 16 and 20 by mounting bolts 25, and is held at a position where the relative position between the cylinder 14 and the piston rod 18 of the hydraulic damper 12 becomes the center of the stroke. The end 14a of the cylinder 14 and the end 18a of the piston rod 18 are pinched by screwing a bolt 30 and a nut 31, and a resistance is applied so as not to rotate due to friction caused by the pinching force. .

The holding member 46 is formed in a rod shape narrower than the above-mentioned holding member 22, and is made of a material having low rigidity (for example, a rigid resin material or wood). Therefore, when a relatively small vibration (earthquake) is input, the piston rod 18 of the hydraulic damper 12 does not relatively displace, and when a relatively large vibration (earthquake) is input, the holding member 46 is moved in the horizontal direction. The cylinder 14 and the piston rod 18 of the hydraulic damper 12 are cut by shearing force.
Are in a state where relative displacement is possible.

As described above, if vibration of a predetermined magnitude or more is input without removing the holding member 46 after the vibration damping device 51 is installed, the holding member 46 is cut off and the hydraulic damper 12 is moved to the building. Can be attenuated to prevent resonance, and the reliability after installation can be improved. Therefore, the inoperable state of the hydraulic damper 12 due to forgetting to remove the holding member 46 after installation can be avoided, and the holding member 4
6 does not need to use nerves, so that the installation work can be easily performed.

Further, since the holding member 46 does not need to be removed after the installation, it does not require extra labor and is not wasted because it is not discarded after the installation. Further, in the vibration damping device 51, similarly to the case of the above-described vibration damping device 11, sheet metal mounting plates 24 and 26 that are mounted on the brackets 16 and 20 at the time of construction are separately provided. Each of the brackets 16 and 20 is formed by bending an iron sheet metal as described later, and while the holding member 46 is mounted at the installation site,
The mounting plates 24 and 26 are mounted.

Here, an installation procedure of the vibration damping device 51 having the above configuration will be described. 4 (A) to 4 (D) are process diagrams for explaining the installation procedure of the vibration damping device 51.
FIG. 5 is a front view showing a state where the vibration damping device 51 is mounted between the upper panel 37 and the lower panel 36. FIG. 6 is a rear view showing a state where the vibration damping device 51 is mounted between the upper panel 37 and the lower panel 36.

As shown in FIGS. 1 and 2, the vibration damping device 51 is mounted on the bracket 1 by the holding member 46 as described above.
It is transported to the installation site while the space between 6 and 20 is maintained. Then, as shown in FIG. 4A, the flat portion 20b of the second bracket 20 is placed on the upper edge portion 36a of the lower panel 36, and the panel mounting portion 20c is applied to the back side of the lower panel 36. . In this state, a fastening member 38 such as a nail or a wood screw is driven into the small hole 32 of the panel mounting portion 20c. Thus, the second bracket 20 is fixed to the rear side of the lower panel 36.

Next, as shown in FIGS. 4B and 5, the lower edge portion 37a of the upper panel 37 is placed on the flat portion 16b of the first bracket 16, and the panel mounting portion 16c is attached. It is applied to the back side of the upper panel 37. In this state, the upper panel 37 is fixed to the upper beam 34, and a fastening member 40 such as a nail or a wood screw is driven into the small hole 28 of the panel mounting portion 16c. Thus, the first bracket 16 is fixed to the rear surface of the upper panel 37.

Next, as shown in FIG. 4C, the lower mounting plate 26 is attached to the holding member mounting portion 20a of the bracket 20 by loosening the mounting bolt 25 and leaving the holding member 46. Fix with. Next, as shown in FIGS. 4D and 6, the upper mounting plate 24 is fixed to the holding member mounting portion 16 a of the bracket 16 by tightening the mounting bolt 25 while the holding member 46 is left. Thus, the mounting plates 24 and 26 are attached to the panel mounting portions 16c of the brackets 16 and 20 fixed to the lower panel 36 and the upper panel 37, respectively.
Standing at a position facing 20c, panel mounting portions 16c,
The front and rear surfaces of the lower panel 36 and the upper panel 37 are sandwiched between the lower panel 20c and the upper panel 20c.

In this embodiment, the mounting plates 24 and 26 are fixed to the brackets 16 and 20 by using the mounting bolts 25 for fixing the holding member 46. However, the present invention is not limited to this. Fixing bolt and fixing plate 24,
It is also possible to adopt a configuration in which a mounting bolt for fixing 26 is provided separately. Since the mounting plates 24 and 26 are fastened to the brackets 16 and 20 while the holding member 46 is left in this way, the holding member 46 holds the space between the brackets 16 and 20 even after installation, and relatively small vibration is input. In such a case, the hydraulic damper 12 does not perform the damping operation. That is, in an earthquake having a small amplitude (for example, seismic intensity 4 or less), the building does not resonate and there is no possibility of damaging the building, so that it is not necessary to generate the damping force by the hydraulic damper 12.

Here, the reason why the non-operating range of the hydraulic damper 12 is set to a seismic intensity of 4 or less is that, in the seismic intensity class of the Japan Meteorological Agency, in the case of a wooden house, the seismic intensity is slightly less than 5 The strength may be increased to a seismic intensity of about 6 or less if the house has high earthquake resistance.
Then, fastening members 42, 44 such as nails or wood screws are driven into the small holes 24a, 26a of the mounting plates 24, 26. Thus, the installation work of the vibration damping device 11 is completed.

As described above, the vibration damping device 51 fixes the brackets 16 and 20 to the lower panel 36 and the upper panel 37 while the brackets 16 and 20 are connected by the holding member 46, and attaches the mounting plates 24 and 26. To brackets 16 and 2
Since it can be fixed to 0 and can be fixed to the lower panel 36 and the upper panel 37, the construction can be performed by one worker (carpenter).

In the above embodiment, the case where the vibration damping device of the present invention is installed in the wall of a wooden general house has been described as an example. However, the present invention is not limited to this, and is applicable to other buildings. Of course you can.

[0034]

As described above, according to the present invention, the holding member for holding the space between the first bracket and the second bracket is cut off by vibration of a predetermined magnitude or more. It can be installed with the distance between the end and the end of the piston rod maintained at a predetermined distance, and if vibration of a predetermined magnitude or more is input after the installation, the holding member is cut Then, the damping operation by the hydraulic damper is started and the vibration energy can be absorbed. Therefore, if vibration having a magnitude equal to or greater than a predetermined value is input after installation without removing the holding member, the hydraulic damper can attenuate the vibration of the building to prevent resonance, thereby improving reliability after installation. be able to. Therefore, it is possible to avoid an inoperable state of the hydraulic damper due to forgetting to remove the holding member after installation, and it is not necessary to use a nerve for the holding member, thereby facilitating installation work. Further, since it is not necessary to remove and hold the holding member after installation, waste can be eliminated.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of a vibration damping device according to the present invention.

FIG. 2 is a rear view of the vibration damping device.

FIG. 3 is a right side view of the vibration damping device.

FIG. 4 is a process chart for explaining an installation procedure of the vibration damping device 51.

5 is a front view showing a state in which a vibration damping device 51 is mounted between an upper panel 37 and a lower panel 36. FIG.

FIG. 6 is a rear view showing a state where the vibration damping device 51 is mounted between the upper panel 37 and the lower panel 36.

FIG. 7 is a front view of an embodiment of the vibration damping device which the applicant has previously filed.

FIG. 8 is a rear view of the vibration damping device.

FIG. 9 is a left side view of the vibration damping device.

FIG. 10 is a front view showing an installation state of the vibration damping device 11;

[Explanation of symbols]

 12 Hydraulic damper 14 Cylinder 16 First bracket 18 Piston rod 20 Second bracket 25 Mounting bolt 24,26 Mounting plate 33 Lower beam 34 Upper beam 35 Wall space 36 Lower panel 37 Upper panel 38,40,42,44 Fastening Member 46 Holding member 51 Vibration suppression device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Junji Hashimoto 1116 Koizono, Ayase-shi, Kanagawa Prefecture Tokiko Co., Ltd. Sagami Plant (72) Inventor Yohei Katayama 1-3-6 Fujimi, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Tokiko Corporation (72) Inventor Koji Fukui 1-6-3 Fujimi, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Tokiko Co., Ltd. Inventor Hiroshi Tsukuma 1-6-3 Fujimi, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Tokiko Co., Ltd. (72) Inventor Yasuo Inose 1116 Koen, Ayase-shi, Kanagawa Prefecture Tokiko Co., Ltd. Sagami Plant Co., Ltd. 1116 Koizono, Ayase-shi, Kanagawa Tokiko Co., Ltd. Sagami Plant F-term (reference) 3J048 AA06 AC04 BE03 CB30 EA 38 3J066 BA03 BB04 BC03 BF11 3J069 AA50 EE02

Claims (1)

[Claims] 1. A hydraulic damper for damping horizontal vibration of a structure, a first bracket connected to an end of a piston rod of the hydraulic damper for mounting the hydraulic damper, and a cylinder end of the hydraulic damper A second bracket for attaching the hydraulic damper, the holding member being configured to hold the first bracket and the second bracket to each other. A vibration damping device, which is cut off when the vibration inputted to the bracket and the second bracket is greater than a predetermined magnitude.