JP7147274B2 - Damping structure and damping method - Google Patents

Description

The present invention relates to a damping structure and a damping method.

A vibration damping structure having one member, the other member, and a vibration damping device interposed between the one member and the other member to suppress vibration accompanying rotational movement caused by input vibration , are already well known (see, for example, Patent Document 1).

JP 2017-193860 A

In the conventional damping structure, the force (damping force) that suppresses vibration generated in the damping structure becomes unstable depending on the direction of vibration and the like, and the vibration cannot be suppressed with a stable damping force.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to suppress vibration by a stable damping force.

The main invention for achieving the above object is to provide one member, the other member, and a member interposed between the one member and the other member, and to rotate the vibration caused by the input vibration. and a vibration damping device that suppresses the vibration, wherein a guide portion is fixed to the one member, and the vibration damping device includes a fixed portion fixed to the other member and the fixed portion a rotating portion rotatably provided to the other member with a damping material interposed therebetween; an arm portion extending from the rotating portion and swinging as the rotating portion rotates; and an engaging portion that engages with the guide portion, wherein the single engaging portion moves while being guided by the guide portion when the one member and the other member move relative to each other. , wherein the distance between the rotating portion and the engaging portion is kept constant when the one member and the other member move relative to each other .

Other features of the present invention will become apparent from the description of the specification and accompanying drawings.

According to the present invention, vibration can be suppressed by a stable damping force.

It is a plane schematic diagram of damping structure 1 concerning this embodiment. It is a side schematic diagram of damping structure 1 concerning this embodiment. It is the schematic of the 1st rotation damper 5a. FIG. 11 is an explanatory diagram for explaining the operation of the first rotary damper 5a when the air conditioner 3 and the ceiling material 4 move relative to each other in the Y direction; 1 is a schematic diagram showing a conventional damping structure 100; FIG. It is an explanatory view for explaining a theoretical formula of damping structure 1 concerning this embodiment. FIG. 5 is an explanatory diagram for explaining the initial position and relative movement direction of the ceiling material 4 when calculating the damping force; It is a calculation result of the damping force vector in the damping structure 1 according to the present embodiment. FIG. 5 is an explanatory diagram for explaining a theoretical formula of the conventional damping structure 100; It is a calculation result of the damping force vector in the conventional damping structure 100. FIG. It is a plane schematic diagram of damping structure 60 concerning a second embodiment. It is an explanatory view for explaining rotation damper 5 concerning a second embodiment.

At least the following matters will become apparent from the present specification and the accompanying drawings.

one member, the other member, and a damping device interposed between the one member and the other member to suppress the vibration accompanying the rotational movement caused by the input vibration. A guide portion is fixed to the one member, and the vibration damping device is mounted on the other member with a damping material interposed between the fixed portion fixed to the other member and the fixed portion. an arm portion extending from the rotating portion and swinging as the rotating portion rotates; and an arm portion provided on the arm portion and engaged with the guide portion. A vibration damping structure, comprising: an engaging portion that moves while being guided by the guide portion when the one member and the other member move relative to each other.

According to such a damping structure, it is possible to suppress vibrations with a stable damping force.

In this damping structure, the guide portion is a slide rail, the damping device is a rotary damper, the arm portion is a damper arm, and a damping material is provided at one end of the damper arm. The rotating portion that rotates within the fixed portion that is accommodated is provided, and a rotatable bearing is provided at the other end portion as the engaging portion, and when the one member and the other member move relative to each other, , preferably said bearings engaging said slide rails move along said slide rails.

According to such a damping structure, it is possible to realize a damping structure that generates a stable damping force with a simple structure.

In such a vibration damping structure, the vibration damping device includes a first vibration damping device and a second vibration damping device that are provided point-symmetrically with respect to the center of gravity of the other member, and the guide portion includes: It has a first guide part and a second guide part provided so that the moving directions of the engaging part that moves while being guided match each other, and the engaging part of the first vibration damping device is connected to the first guide. and the engaging portion of the second vibration damping device engages the second guide portion.

According to such a damping structure, the damping devices are arranged in a well-balanced manner, and vibrations can be suppressed more appropriately.

In this vibration damping structure, at least two vibration damping devices are provided as the vibration damping devices, and the engaging portion of each of the two vibration damping devices is guided to move the engaging portion. It is desirable to engage with each of the two guides provided in opposite directions.

According to such a vibration damping structure, the vibration damping device can be adapted to vibrations in various directions, and vibrations can be suppressed more appropriately.

Next, a step of providing one member to which the guide portion is fixed, a step of providing the other member, and a vibration damping device that suppresses the vibration accompanying the rotational movement caused by the input vibration is mounted on the one member. and a step of interposing between the other member and the damping device, wherein the damping device has a fixing portion fixed to the other member and a damping material interposed between the fixing portion a rotating portion rotatably provided on the other member; an arm portion extending from the rotating portion and swinging as the rotating portion rotates; a vibration damping method, comprising: an engaging portion that engages with the other member, the engaging portion being guided and moved by the guide portion when the one member and the other member move relative to each other.

According to such a damping method, it is possible to suppress vibrations with a stable damping force.

===Regarding the damping structure 1 according to the present embodiment===
The damping structure 1 according to the present embodiment is interposed between the ceiling material 4 (corresponding to one member), the air conditioner 3 (corresponding to the other member), and the ceiling material 4 and the air conditioner 3, It has a rotary damper 5 (corresponding to a vibration damping device) that suppresses vibration accompanying rotational motion caused by the input vibration, and is for damping the input vibration.

FIG. 1 is a schematic plan view of a damping structure 1 according to this embodiment. FIG. 2 is a schematic side view of the damping structure 1 according to this embodiment. In addition, in the drawings according to the present embodiment, members may be omitted as appropriate in order to explain the present invention in an easy-to-understand manner. The three directions orthogonal to each other are called the X direction, the Y direction, and the Z direction, respectively. The X direction and the Y direction are horizontal, and the Z direction is vertical. In the schematic plan view of FIG. 1, the horizontal direction of the paper is the X direction, the left side (right side) of the paper is the left (right), the vertical direction of the paper is the Y direction, and the back side (front side) of the paper is the Y direction. In the schematic side view of FIG. 2, the vertical direction of the paper is the Z direction, and the upper side (lower side) of the paper is called the top (bottom).

As shown in FIGS. 1 and 2, the damping structure 1 according to the present embodiment includes an air conditioner 3 suspended and supported by a plurality of air conditioner suspension bolts 2b vertically installed from an upper structural frame 2. , is arranged inside an opening 4a provided in a ceiling material 4 that is suspended and supported by a plurality of ceiling material suspension bolts 2a that are also vertically installed from the structural frame 2, and the air conditioner 3 and the ceiling material 4 are connected by a rotary damper 5 .

As shown in FIG. 2, each of a plurality of air conditioner hanging bolts 2b that support the air conditioner 3 is fixed by a brace member 2c. That is, in the present embodiment, the brace member 2c is used as a bracing member for the air conditioner hanging bolt 2b. A brace material is not provided on the ceiling material suspension bolt 2a.

Installation of the brace member 2c makes it difficult for the air conditioner 3 to vibrate (in other words, increases the rigidity of the air conditioner 3). Therefore, by hardening the air conditioner 3, the damper performance can be exhibited more easily. In this embodiment, a rotary damper 5 is interposed between the ceiling material 4 and the air conditioner 3, and the rotary damper 5 suppresses vibration. If the rigidity of both the air conditioner 3 side and the ceiling material 4 side is low (that is, if both are easy to shake), the shaking of one side will easily follow the shaking of the other, and there will be no difference in the way they shake, and the rotation The effectiveness of the damper 5 deteriorates. On the other hand, when the rigidity of the air conditioner 3 side is increased as described above and a difference in rigidity is provided between the air conditioner 3 side and the ceiling material 4 side, even if the ceiling material 4 side shakes greatly, the air conditioning system with high rigidity The machine 3 side does not follow this big shaking, and there is a difference in the shaking of both sides. Therefore, the damping effect of the rotary damper 5 tends to occur appropriately.

The air conditioner 3 includes a main body portion 31 having a substantially square rectangular parallelepiped shape in a plan view, and a main body portion 31 provided on the lower surface side of the main body portion 31. It has a cover portion 32 covering from below and an angle member 33 as a mounting jig. The opening 4 a of the ceiling material 4 is formed to be larger than the outer dimensions of the main body 31 and smaller than the outer dimensions of the cover 32 .

An angle member 33 having an L-shaped cross section is provided on each side of the body portion 31 so as to surround the body portion 31 . A horizontal plate portion 33b extends horizontally outward from the lower edge of the vertical plate portion 33a (see FIG. 3). The angle member 33 surrounds the four circumferences of the body portion 31 and has a frame shape.

Eight rotary dampers 5 are provided in the air conditioner 3 (more specifically, the horizontal plate portion 33b of the angle member 33). Here, the rotary damper 5 provided in the direction of 3 o'clock in FIG. 1 is referred to as the first rotary damper 5a. A rotary damper 5d, a fifth rotary damper 5e, a sixth rotary damper 5f, a seventh rotary damper 5g, and an eighth rotary damper 5h.

Each of the first rotary damper 5a to the eighth rotary damper 5h is in a state in which a damping material is interposed between a case 51 (corresponding to a fixed portion) fixed to the air conditioner 3 (angle member 33) and the case 51. A rotating body 52 (corresponding to a rotating part) rotatably provided in the air conditioner 3 (angle member 33), and a damper arm 53 extending from the rotating body 52 and swinging as the rotating body 52 rotates (an arm part ) and a bearing 54 that engages with a slide rail 55 (corresponding to a guide portion) provided on the damper arm 53 and fixed to the ceiling material 4 so that the ceiling material 4 and the air conditioner 3 move relative to each other. and a bearing 54 (corresponding to an engaging portion) that moves in the moving direction (linear direction) while being guided by the slide rail 55 .

In other words, the guide function of the slide rail 55 restricts the movement of the bearing 54 in directions other than the movement direction. That is, the moving direction of the bearing 54 is limited to the longitudinal direction of the slide rail 55 .

In this embodiment, as shown in FIG. 1, the movement direction is the X direction for the first rotary damper 5a and the fifth rotary damper 5e. In addition, the third rotary damper 5c and the seventh rotary damper 5g are in the Y direction, and the second rotary damper 5b and the sixth rotary damper 5f are in an oblique upward-right direction between the X and Y directions. , and the fourth rotary damper 5d and the eighth rotary damper 5g are inclined downward to the right between the X direction and the Y direction.

That is, in the present embodiment, a first guide portion and a second guide portion (for example, the first rotary damper 5a and the fifth rotary damper 5a and the fifth rotary A slide rail 55) for the damper 5e is provided. As vibration damping devices, a first vibration damping device and a second vibration damping device (for example, a first rotary damper 5a and a fifth rotary damper 5e) provided point-symmetrically with respect to the center of gravity of the air conditioner 3 are provided. The bearing 54 of the first damping device (first rotary damper 5a) is engaged with the first guide portion (slide rail 55 of the first rotary damper 5a), and the second guide portion (slide of the fifth rotary damper 5e) is engaged. A bearing 54 of the second damping device (fifth rotary damper 5e) is engaged with the rail 55).

Further, in the present embodiment, two guide portions (for example, the slide rails 55 of the first rotary damper 5a and the second rotary damper 5b) are provided so that the moving directions of the bearing 54 that is guided and moved are different from each other. ) are provided. At least two vibration damping devices (for example, the first rotary damper 5a and the second rotary damper 5b) are provided as vibration damping devices, and the two guide portions (the first rotary damper 5a and the second rotary damper 5b) are provided. The slide rails 55 of the two damping devices (the first rotary damper 5a and the second rotary damper 5b) are engaged with each of the slide rails 55).

Next, the detailed structure of the rotary damper 5 will be described. In this embodiment, each of the first rotary damper 5a to the eighth rotary damper 5h has the same structure. Therefore, below, the 1st rotary damper 5a is mentioned as an example, and is demonstrated.

FIG. 3 is a schematic diagram of the first rotary damper 5a. The upper diagram of FIG. 3 is a schematic plan view of the first rotary damper 5a, the central diagram of FIG. , and BB are schematic cross-sectional views of the first rotary damper 5a. FIG. 4 is an explanatory diagram for explaining the operation of the first rotary damper 5a when the air conditioner 3 and the ceiling material 4 move relative to each other in the Y direction. In FIG. 4, the solid line represents the first rotary damper 5a before the relative movement, and the broken line represents the first rotary damper 5a after the relative movement.

As shown in FIG. 3, the disk-shaped rotating body 52 is rotatably housed coaxially with the case 51, which is fixed to the angle member 33 and filled with oil 40 as a damping material. Since the rotating body 52 rotates while being in contact with the oil 40, the damping effect of the oil 40 (the effect of suppressing the rotating motion of the rotating body 52) is exerted on the rotating motion.

The case 51 according to the present embodiment includes a pedestal 51a and an annular member 51b erected (fixed) on the pedestal 51, and the pedestal 51a is fixed to the horizontal plate portion 33b of the angle member 33. It is fixed with bolts 72 .

Further, the rotor 52 has a facing portion 52a located inside the ring member 51b and facing the ring member 51b with the oil 40 interposed therebetween. A rectangular opening is provided in the center of the opposing portion 52a, and a square bar 52b having a rectangular cross section is accommodated in this opening. The square bar 52b is fixed by a fixing bolt 74 to a square bar stopper member 52c attached to the facing portion 52a, so that the facing portion 52a and the square bar 52b rotate integrally.

One end of a damper arm 53 elongated in a flat plate shape is fixed to the end surface of the rotating body 52 (more specifically, the square bar 52b). That is, one end of the damper arm 53 is provided with a rotating body 52 (square bar 52b) that rotates within a case 51 containing a damping material. As shown in FIG. 3, the damper arm 53 extends from one end of the damper arm 53 to the right in the X direction. Therefore, when the rotating body 52 rotates, the damper arm 53 swings around the rotating shaft of the rotating body 52 . In other words, when the damper arm 53 swings, the rotor 52 rotates.

A rotatable (rotatable) bearing 54 is provided at the other end of the damper arm 53 along the rotation axis direction of the rotor 52 , and engages with a slide rail 55 provided on the ceiling material 4 . there is When the ceiling material 4 and the air conditioner 3 move relative to each other, the bearings 54 engaged with the slide rails 55 move along the slide rails 55 .

Therefore, when the air conditioner 3 and the ceiling material 4 are relatively displaced due to an earthquake or the like, the air conditioner 3 and the slide rails 55 attached to the ceiling material 4 are relatively displaced as shown in FIG. (FIG. 4 shows an example in which both are relatively displaced in the Y direction). At this time, since the bearing 54 is engaged with the slide rail 55 , the movement of the bearing 54 is restrained by the operation of the slide rail 55 . That is, the bearing 54 slides in the slide rail 55 along the X direction and moves with the relative movement of the slide rail 55 . Due to the movement of the bearing 54, the damper arm 53 swings, and the rotor 52 rotates. Due to the rotating motion of the rotating body 52, the damping effect of the oil 40 is exhibited, and vibrations such as earthquakes are suppressed.

=== Damping force of damping structure ===
The damping force of the damping structure 1 according to the present embodiment will be described in comparison with the conventional damping structure 100. FIG.

<<<Regarding the conventional damping structure 100>>>
FIG. 5 is a schematic diagram showing a conventional damping structure 100. As shown in FIG. The upper diagram of FIG. 5 is a schematic plan view of a conventional damping structure 100, and corresponds to FIG. The lower diagram in FIG. 5 is an explanatory diagram for explaining the rotational operation of the conventional rotary damper 105, and corresponds to FIG.

The difference between the vibration damping structure 1 according to this embodiment and the conventional vibration damping structure 100 lies in the configuration of the provided rotary damper. That is, in the conventional vibration damping structure 100, a rotary damper 105 having a different configuration from the rotary damper 5 is provided.

As described above, the rotary damper 5 is rotatably housed in the case 51 in which the rotor 52 is fixed to the angle member 33 at one end of the damper arm 53. (damper arm 53) and rotary damper 105 (damper arm 153) have the same configuration. While one end of the damper arm 53 and one end of the damper arm 153 have the same configuration, the other end of the damper arm 53 and the other end of the damper arm 153 are different.

That is, the other end of the damper arm 153 is provided with a slide groove 153a along the longitudinal direction at the center in the lateral direction, as shown in the lower diagram of FIG. A fixing bolt 154 is inserted through the slide groove 153 a and fixed to a bolt fixing member 155 provided on the ceiling material 4 . Therefore, when the air conditioner 3 and the ceiling material 4 move relative to each other, the fixing bolt 154 swings the damper arm 153 while moving in the slide groove 153a, thereby rotating the rotor 52. there is

<<<About the damping force generated in the damping structure>>>
Next, the damping force generated in the damping structure when vibration is input is calculated from each theoretical formula (approximate formula) for the damping structure 1 according to the present embodiment and the conventional damping structure 100. . Then, both damping forces are compared.

<Calculation of damping force of damping structure 1 according to the present embodiment>
First, the damping force (specifically, the damping force vector) of the damping structure 1 according to the present embodiment is calculated. FIG. 6 is an explanatory diagram for explaining the theoretical formula of the damping structure 1 according to this embodiment. FIG. 7 is an explanatory diagram for explaining the initial position and relative movement direction of the ceiling material 4 when calculating the damping force. FIG. 8 shows the calculation result of the damping force vector in the damping structure 1 according to this embodiment.

次に、式(1-2)を用いて、初期位置（Ｘ，Ｙ）の天井材４が、０度、２２．５度、４５度、６７．５度、９０度の５方向に５０ｃｍ／ｓｅｃの速度で相対移動したときの減衰力を算出する。

Next, using the formula (1-2), the ceiling material 4 at the initial position (X, Y) is 50 cm/ A damping force is calculated when relative movement is performed at a speed of sec.

Note that the initial position (X, Y) is set to X=-3.3, -2.2, -1.1, 0, 1.1, 2.2, 3.3 (cm) and Y=- 3.3, -2.2, -1.1, 0, 1.1, 2.2, 3.3 (cm). That is, the damping force is calculated at 7×7=49 initial positions. The initial position (0, 0) represents the relative position of the ceiling material 4 with respect to the air conditioner 3 in a normal state (when an earthquake does not occur) (see the upper diagram in FIG. 7). For example, the initial position (3.3, 3.3) is a position where the ceiling material 4 is shifted by 3.3 cm in the X and Y directions from the state shown in the upper diagram of FIG. reference).

Then, the damping forces when the ceiling material 4 moves at 50 cm/sec in the above five directions (see the upper and lower diagrams of FIG. 7) from these initial positions are obtained based on the equation (1-2). As a result, 7×7×5=245 pieces of damping force data (damping force vectors) are acquired.

FIG. 8 shows these damping force data (damping force vector). The horizontal axis represents the initial position X, and the vertical axis represents the initial position Y. Therefore, 49 initial positions correspond to the 49 points of intersection of the grid (represented by dashed lines) on the graph. there is Five arrows are drawn from each intersection, and these are damping force vectors when the ceiling material 4 moves in five directions. In this calculation result, the direction of the damping force vector is substantially opposite to the moving direction of the ceiling material 4 .

For example, the arrow indicated by symbol A indicates that the ceiling material 4 moves at a speed of 50 cm/sec in a direction of 67.5 degrees from the state of the initial position (3.3, 3.3) (the state in the lower diagram of FIG. 7). damping force vector (magnitude and direction of damping force) when

<Calculation of damping force of conventional damping structure 100>
Next, the damping force (specifically, the damping force vector) of the damping structure 100 is calculated. FIG. 9 is an explanatory diagram for explaining the theoretical formula of the conventional damping structure 100. As shown in FIG. FIG. 10 shows the calculation result of the damping force vector in the conventional damping structure 100. FIG.

となる。また、この減衰力は式(2-5-1)(2-5-2)のようにｘ方向成分、ｙ方向成分に分解できる。

becomes. Also, this damping force can be decomposed into an x-direction component and a y-direction component as shown in equations (2-5-1) and (2-5-2).

以上を整理すると、制振構造１００において発生する減衰力ベクトルを式(2-6)で表すことができる。

Summarizing the above, the damping force vector generated in the damping structure 100 can be expressed by the equation (2-6).

Next, using these formulas, in the same way as the calculation of the damping force of the damping structure 1 according to the present embodiment (hereinafter also referred to as the calculation of this example), the ceiling material at the initial position (X, Y) 4 is relatively moved at a speed of 50 cm/sec in five directions of 0 degrees, 22.5 degrees, 45 degrees, 67.5 degrees, and 90 degrees. Regarding the initial position (X, Y), unlike the calculation in this example, X = -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 (cm ) and Y=-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 (cm). FIG. 10 shows these damping force data (damping force vector).

<Effectiveness of damping structure 1 according to the present embodiment>
Regarding the damping force according to the present embodiment (this example), as shown in FIG. damping force is obtained. Moreover, the direction of the damping force is substantially opposite to the relative movement direction of the ceiling material 4 in any case. That is, in the present embodiment (this example), it is possible to obtain a stable damping force.

On the other hand, as for the damping force according to the conventional example, as shown in FIG. 10, when the initial position (X, Y) and the relative movement direction of the ceiling material 4 change, the magnitude of the damping force changes greatly. sometimes. Also, there are cases where the direction of the damping force cannot be maintained in a direction substantially opposite to the relative movement direction of the ceiling material 4 . That is, in the conventional example, stable damping force cannot be obtained.

It is considered that such good or bad damping force is caused by the following differences in the structure of the rotary damper. That is, in the conventional example, as indicated by L1 and L2 in the lower drawing of FIG. In other words, the denominator L of the equation (2-4) fluctuates, which causes the damping force to be unstable in the calculation results. On the other hand, in this example, the distance from the rotating body 52 to the bearing 54 does not change even if the ceiling material 4 moves relatively, as indicated by L in FIG. That is, the denominator L of the formula (1-0) or the formula (1-1) does not fluctuate, which is a factor in stabilizing the damping force in the calculation result.

In this way, the vibration damping structure 1 according to the present embodiment is interposed between the ceiling material 4, the air conditioner 3, and the ceiling material 4 and the air conditioner 3. and a damping device for suppressing vibration. A guide portion is fixed to the ceiling material 4, and the damping device rotates to the air conditioner 3 with a damping material interposed between a case 51 fixed to the air conditioner 3 and the case 51. A freely provided rotating body 52, an arm portion extending from the rotating body 52 and swinging as the rotating body 52 rotates, and an engaging portion provided on the arm portion and engaged with the guide portion. A bearing 54 that is guided and moved by the guide portion when the ceiling material 4 and the air conditioner 3 move relative to each other is provided. Therefore, as described above, vibration can be suppressed by a stable damping force.

Further, in the damping structure 1 according to the present embodiment, the guide portion is the slide rail 55, the damping device is the rotary damper 5, and the arm portion is the damper arm 53. One end is provided with a rotating body 52 that rotates in a case 51 containing a damping material, and the other end is provided with a rotatable bearing 54 as an engaging portion, so that the ceiling material 4 and the air conditioner 3 are connected. The bearing 54 engaged with the slide rail 55 moves along the slide rail 55 during the relative movement.

That is, by using the rotating damper 5 having the rotating body 52, the damper arm 53, and the bearing 54 that engages with the slide rail 55 as the vibration damping device, the vibration damping structure 1 that generates a stable damping force can be simply constructed. can be realized by

Further, in the damping structure 1 according to the present embodiment, as the damping devices, a first damping device and a second damping device (for example, a second A first guide portion and a second guide portion (for example, , the slide rails 55 of the first rotary damper 5a and the fifth rotary damper 5e), the bearing 54 of the first vibration damping device engages the first guide portion, and the bearing 54 of the second vibration damping device engages the second It was decided to engage with the guide part.

Therefore, the damping device (rotary damper 5) is arranged in a well-balanced manner, and vibration can be suppressed more appropriately.

Further, in the damping structure 1 according to the present embodiment, at least two damping devices (for example, the first rotary damper 5a and the second rotary damper 5b) are provided as damping devices, and the two damping devices Each bearing 54 of (the first rotary damper 5a and the second rotary damper 5b) is provided with two guide portions (for example, the first rotary damper 5a and slide rails 55) of the second rotary damper 5b.

When the direction of vibration completely coincides with the direction of movement, the bearing 54 slides in the guide portion, but the rotary damper 5b does not rotate and the damping force of the damping device does not occur. In the present embodiment, since the moving directions of the two guide portions are different from each other, if the direction of vibration coincides with the moving direction of one of the two guide portions, the vibration damping device corresponding to the one of the two guide portions Even if no damping force (rotating operation of one rotary damper 5) is generated, the damping force of the other vibration damping device can be generated. Therefore, the damping device (rotary damper 5) can be adapted to vibrations in various directions, and vibrations can be suppressed more appropriately.

=== Second Embodiment ===
Next, a damping structure 60 according to a second embodiment will be described. FIG. 11 corresponds to FIG. 1 and is a schematic plan view of the damping structure 60 according to the second embodiment. FIG. 12 is an explanatory diagram for explaining the rotary damper 5 according to the second embodiment.

In the damping structure 60 according to the second embodiment, the installation positions of the first rotary damper 5a to the eighth rotary damper 5h (and the installation positions of the slide rails 55 with which the bearings 54 of these rotary dampers 5 are respectively engaged) ) is different from the above embodiment (referred to as the first embodiment).

That is, in the first embodiment, as shown in FIG. 1, eight rotary dampers 5 and corresponding slide rails 55 (hereinafter referred to as rotary dampers 5 and the like for convenience) are arranged around the air conditioner 3. Although they were provided so as to be substantially evenly spaced in the circumferential direction, they are provided so as to be non-uniformly spaced in the second embodiment. That is, as shown in FIG. 11, a plurality of (eight) rotary dampers 5 and the like are divided into a plurality of (two in the present embodiment) groups, and the rotary dampers 5 and the like belonging to one group are grouped together. installed in place. In the present embodiment, the first rotary damper 5a to fourth rotary damper 5d, etc. belong to the first group, the fifth rotary damper 5e to eighth rotary damper 5h, etc. belong to the second group, and the rotary dampers belonging to the first group belong to the first group. The dampers 5 and the like are collectively installed on the right rear side, and the rotary dampers 5 and the like belonging to the second group are collectively installed on the left front side. That is, in the present embodiment, rotary dampers 5 and the like are installed in two groups at positions corresponding to two of the four corners of the air conditioner 3, and at positions corresponding to the other two corners, Rotation damper 5 grade|etc., is not installed.

As can be understood by comparing FIGS. 1 and 11, in each of the first rotary damper 5a to the eighth rotary damper 5h, the positional relationship between the rotary damper 5 and the slide rail 55 and the direction in which the slide rail 55 faces ( The movement direction) is common between the first embodiment and the second embodiment. For example, in both the first embodiment and the second embodiment, the moving direction of the slide rail 55 corresponding to the second rotary damper 5b is an oblique upward right direction between the X direction and the Y direction. .

In addition, in the second embodiment, in order to collectively provide a plurality of (four in this embodiment) rotary dampers 5 and the like at predetermined positions (positions on the right back side or left front side), As shown in 12, an upper plate 56 and a lower plate 57 are provided as installation members for the rotary damper 5 and the like.

The upper plate 56 is provided with four rotary dampers 5 . These rotary dampers 5 are fixed to the upper plate 56 while positioned below the upper plate 56 . Further, the upper plate 56 is fixed to the angle member 33 while positioned below the angle member 33 . Therefore, the rotary damper 5 is positioned below the angle member 33 . This point is different from the first embodiment (see FIGS. 1 and 3) in which the rotary damper 5 is positioned above the angle member 33 .

On the other hand, the lower plate 57 is provided with four slide rails 55 . These slide rails 55 are fixed to the lower plate 57 while positioned above the lower plate 57 . Further, the lower plate 57 is fixed to the ceiling material 4 while positioned above the ceiling material 4 . Therefore, the slide rail 55 is positioned above the ceiling material 4 (this point is the same as in the first embodiment).

Thus, in the first embodiment, the rotary damper 5 (slide rail 55) is directly provided on the angle material 33 (ceiling material 4), whereas in the second embodiment, the rotary damper 5 A (slide rail 55) is provided on the angle member 33 (ceiling member 4) via an upper plate 56 (lower plate 57). Since the upper plate 56 (lower plate 57) is a single plate for fixing the four rotary dampers 5 (slide rails 55), the four rotary dampers 5 (slide rails 55) are collectively It will play the role of unitizing.

===Other Embodiments===
The above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to limit and interpret the present invention. The present invention can be modified and improved without departing from its spirit, and it goes without saying that the present invention includes equivalents thereof.

In the above embodiment, the air conditioner 3 is used as the other member, but the other member is not limited to this. For example, the other member may be a wall that surrounds the ceiling material 4 on all four sides, or a reinforcing frame (a frame that transmits the damping force to the structural frame 2) vertically installed on the structural frame 2 and made of steel or the like. ).

Further, in the above embodiment, an example in which the direction of movement of the bearing 54 along the slide rail 55 is the horizontal direction (in other words, an example in which the rotating surface of the rotary damper 5 is a horizontal plane) has been given. , and an example in which the direction of movement is the vertical direction (in other words, an example in which the rotation surface of the rotary damper 5 is the vertical surface) may be used. As such an example, a case where one member is a wall and the other member is a floor or a ceiling can be mentioned.

1 Damping structure 2 Structural frame 2a Ceiling material suspension bolt 2b Air conditioner suspension bolt 2c Brace material 3 Air conditioner (other member)
4 Ceiling material (one member)
4a opening 5 rotary damper (vibration damping device)
5a 1st rotary damper 5b 2nd rotary damper 5c 3rd rotary damper 5d 4th rotary damper 5e 5th rotary damper 5f 6th rotary damper 5g 7th rotary damper 5h 8th rotary damper 31 body portion 32 cover portion 33 angle member 33a Vertical plate portion 33b Horizontal plate portion 40 Oil 51 Case (fixed portion)
51a Pedestal 51b Annular member 52 Rotating body (rotating part)
52a facing portion 52b square bar 52c square bar stop member 53 damper arm (arm portion)
54 bearing (engagement part)
55 slide rail (guide)
56 upper plate 57 lower plate 60 damping structure 70 fixing bolt 72 fixing bolt 74 fixing bolt 100 damping structure 105 rotary damper 153 damper arm 153a slide groove 154 fixing bolt 155 bolt fixing member

Claims (5)

one member, the other member, and a damping device interposed between the one member and the other member to suppress the vibration accompanying the rotational movement caused by the input vibration. ,
A guide portion is fixed to the one member,
The damping device is
a fixing portion fixed to the other member;
a rotating portion rotatably provided on the other member with a damping material interposed between the rotating portion and the fixed portion;
an arm portion extending from the rotating portion and swinging as the rotating portion rotates;
An engaging portion provided on the arm portion and engaged with the guide portion, the single unit moving while being guided by the guide portion when the one member and the other member move relative to each other. an engaging portion of
, wherein the distance between the rotating portion and the engaging portion is kept constant when the one member and the other member move relative to each other . The damping structure according to claim 1,
When the one member and the other member move relative to each other, the engaging portion slides and moves in a predetermined direction within the guide portion, and rotates so as to form an angle with the predetermined direction. damping structure. A damping structure according to claim 1 or claim 2,
The vibration damping device includes a first vibration damping device and a second vibration damping device which are provided point-symmetrically with respect to the center of gravity of the other member,
As the guide part, a first guide part and a second guide part are provided so that the moving directions of the engaging part that moves while being guided are aligned with each other,
Vibration damping characterized in that the engaging portion of the first damping device engages the first guide portion, and the engaging portion of the second damping device engages the second guide portion. structure. The damping structure according to any one of claims 1 to 3,
At least two vibration damping devices are provided as the vibration damping devices,
The engaging portion of each of the two vibration damping devices engages with each of two guide portions provided such that the moving directions of the engaging portions that move while being guided are different from each other. Damping structure. A step of providing one member to which the guide portion is fixed;
providing the other member;
a step of interposing a vibration damping device that suppresses the vibration accompanying the rotational movement caused by the input vibration between the one member and the other member;
The damping device is
a fixing portion fixed to the other member;
a rotating portion rotatably provided on the other member with a damping material interposed between the rotating portion and the fixed portion;
an arm portion extending from the rotating portion and swinging as the rotating portion rotates;
An engaging portion provided on the arm portion and engaged with the guide portion, the single unit moving while being guided by the guide portion when the one member and the other member move relative to each other. an engaging portion of
and maintaining a constant distance between the rotating portion and the engaging portion when the one member and the other member move relative to each other .

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