JP2019183446A - Ceiling vibration control system - Google Patents

Abstract

To suppress the damage of a ceiling by reducing the acceleration of a ceiling and damping the shaking of a ceiling at an early stage when an earthquake occurs.SOLUTION: A ceiling vibration control system 1 is arranged between a hanger S and a ceiling C suspended from the hanger S and provided with a first damper 6 and a second damper 7 which are disposed so as to be inclined to the opposite side and which attenuate vibrations generated in the ceiling C and a bundle member 8 which extends in the vertical direction to suppress out-of-plane deformation of a ceiling caused by expansion and contraction of the first damper 6 and the second damper 7.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ceiling vibration damping system.

  In general, as a countermeasure for earthquakes of suspended ceilings, earthquake resistance has been attempted. Even in recent revisions of legal standards, a pair of diagonally arranged V-shapes in the ceiling base structure of a specific ceiling It is required to provide braces (for example, see Patent Document 1).

Japanese Patent Laying-Open No. 2015-081496

  By the way, “Explanation of technical standards for measures against ceiling dropout in buildings” based on the above legal standards, “Current technical knowledge clarifies the properties of ceilings attached to structural bodies in the event of a large earthquake. Because it is difficult, the technical standards of this time exceed the middle earthquake by suppressing the damage to the ceiling during the occurrence of rare earthquake motion (medium earthquake) that can assume the properties of the ceiling to some extent "The goal is to reduce the dropout of the ceiling even during certain earthquakes."

  As a result of intensive studies by the present inventors, even in the ceiling base structure of a specific ceiling in accordance with the above-mentioned legal standards, when a certain earthquake exceeding a medium earthquake occurs, the acceleration response of the ceiling is amplified, and even after the earthquake We obtained knowledge that the ceiling could be damaged by the continued shaking of the ceiling.

  Therefore, an object of the present invention is to provide a ceiling vibration control system that can reduce ceiling acceleration and reduce ceiling vibration at an early stage when an earthquake occurs to suppress ceiling damage. To do.

  A ceiling vibration suppression system according to the present invention is a ceiling vibration suppression system that is disposed between a suspension base and a ceiling that is suspended from the suspension base, and is configured to incline on opposite sides of each other to generate vibrations that occur on the ceiling. A first damper and a second damper that attenuate, and a bundle that extends in the vertical direction and suppresses out-of-plane deformation of the ceiling due to expansion and contraction of the first damper and the second damper.

  In the ceiling vibration damping system according to the present invention, the first damper and the second damper are arranged so as to be inclined to the opposite sides. Therefore, when an earthquake occurs, the vibration of the ceiling is caused by the first damper and the second damper. Attenuated. Thereby, when an earthquake occurs, the acceleration of the ceiling can be reduced and the shaking of the ceiling can be attenuated at an early stage to suppress damage to the ceiling. Furthermore, since the bundle member extending in the vertical direction can suppress the out-of-plane deformation of the ceiling accompanying the expansion and contraction of the first damper and the second damper, damage to the ceiling can be further suppressed. In addition, since the bundle material loads the seismic force in the compression direction acting on the first damper and the second damper, the first damper and the second damper only have to exhibit at least a damping force in the tensile direction. The damping force may not be exhibited.

  In the first damper and the second damper, the damping force in the compression direction may be smaller than the damping force in the tension direction. This ceiling damping system uses the first damper and the second damper whose damping force in the compressing direction is smaller than the damping force in the pulling direction. Therefore, when the damper having the same damping force in the compressing direction and the damping force in the pulling direction is used. Compared with the cost, the cost can be reduced.

  The first damper has a first joint that can adjust the length of the first damper in the axial direction, and the second damper has a second joint that can adjust the length of the second damper in the axial direction. Also good. In this ceiling vibration damping system, the suspended length of the ceiling, the inclination angle of the first damper and the second damper are adjusted by adjusting the axial lengths of the first damper and the second damper by the first joint and the second joint. The first damper and the second damper can be appropriately attached even when construction is performed at different construction sites.

  The first damper and the second damper may be arranged in a V shape that spreads upward. In this ceiling vibration damping system, the first damper and the second damper are arranged in a V-shape that spreads upward, so that the vibration of the ceiling can be appropriately damped by the first damper and the second damper. .

  The first damper and the second damper may be arranged in a V shape that spreads downward. In this ceiling vibration control system, the first damper and the second damper are arranged in a V shape that spreads downward, so that the vibration of the ceiling can be appropriately damped by the first damper and the second damper. .

  The bundle member has a first bundle member and a second bundle member separated from each other, the first damper is fixed to the first bundle member, and the second damper is fixed to the second bundle member. Also good. In this ceiling vibration damping system, the first damper and the first bundle are assembled as a unit, and the second damper and the second bundle are assembled as a unit, so that the workability can be improved.

  You may further provide the 1st vibration amplification mechanism which amplifies the expansion-contraction amount of the 1st damper accompanying the vibration of a ceiling, and the 2nd vibration amplification mechanism which amplifies the expansion-contraction amount of the 2nd damper accompanying the vibration of a ceiling. In this ceiling damping system, the first vibration amplification mechanism and the second vibration amplification mechanism amplify the expansion and contraction amounts of the first damper and the second damper, respectively, so that the damping efficiency of the first damper and the second damper is improved. Can do.

  According to the present invention, when an earthquake occurs, the acceleration of the ceiling can be reduced, the shaking of the ceiling can be attenuated early, and damage to the ceiling can be suppressed.

It is sectional drawing which shows the ceiling damping system which concerns on 1st embodiment. It is sectional drawing which shows the ceiling damping system which concerns on 2nd embodiment. It is sectional drawing which shows the ceiling damping system which concerns on 3rd embodiment. It is sectional drawing which shows the ceiling damping system which concerns on 4th embodiment. It is sectional drawing which shows the ceiling damping system which concerns on 5th embodiment. It is sectional drawing which shows the ceiling damping system which concerns on 6th embodiment. It is sectional drawing which shows the ceiling damping system which concerns on 7th embodiment. It is sectional drawing which shows the ceiling damping system which concerns on 8th embodiment. It is sectional drawing which shows the ceiling damping system of the comparative example 1. It is sectional drawing which shows the ceiling damping system of the comparative example 2.

  Hereinafter, a ceiling vibration damping system according to the present invention will be described in detail with reference to the drawings. In all the drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

[First embodiment]
As shown in FIG. 1, the ceiling vibration damping system 1 according to the first embodiment is arranged between a suspension source S and a ceiling C suspended from the suspension source S. The suspension element S is composed of a building frame, a beam, and the like. The ceiling C is suspended from the suspension source S by the suspension bolt 5 and is also called a suspended ceiling. In the following description, the vertical direction in the ceiling vibration damping system refers to the vertical direction in a state where the ceiling vibration suppression system is disposed between the suspension source S and the ceiling C.

  The ceiling C is mainly composed of a ceiling material 2 which is a ceiling surface material, and a field edge 3 and a field edge receiver 4 which are ceiling base materials.

  The field edge 3 is a member to which the ceiling material 2 is attached. The field edge 3 is formed long with a metal material such as stainless steel or a galvanized steel sheet. The field edge 3 is formed in a substantially C-shaped cross section opened upward. The ceiling vibration damping system 1 includes a plurality of field edges 3. The plurality of field edges 3 are arranged in parallel to each other and extend in the horizontal direction.

  The field edge receiver 4 is a member that is disposed on the opposite side of the field edge 3 from the ceiling material 2 (upper side of the field edge 3) and extends in a direction perpendicular to the field edge 3. The field receiver 4 is made of a metal material such as stainless steel or a galvanized steel plate and is formed long. The field edge receiver 4 is formed in a U-shaped cross-section opened to the side. The ceiling vibration damping system 1 includes a plurality of field guards 4. The plurality of field receivers 4 are arranged in parallel to each other and extend in a horizontal direction orthogonal to the field receiver 4.

  The field edge 3 and the field edge receiver 4 are connected by a clip 11. The clip 11 is a metal fitting that connects the field edge 3 and the field edge receiver 4 at the intersection position where the field edge 3 and the field edge receiver 4 intersect. The clip 11 is formed of a metal material such as stainless steel or a galvanized steel plate.

  The ceiling C may further include a reinforcing material that is disposed on the side opposite to the field edge 3 of the field edge receiver 4 (upper side of the field edge receiver 4) and extends in a direction orthogonal to the field edge receiver 4. In this case, the reinforcing material is connected to the field edge receiver 4 by a clip.

  The suspension bolt 5 is a member that is fixed to the suspension base S and suspends the ceiling C. The suspension bolt 5 extends linearly in the vertical direction. A suspension fitting 12 (hanger) for hooking the field edge receiver 4 is attached to the lower end portion of the suspension bolt 5.

  In the present embodiment, a plurality of suspension bolts 5 are suspended from the suspension element S. The plurality of suspension bolts 5 include a first suspension bolt 5a, a second suspension bolt 5b, and a third suspension bolt 5c disposed between the first suspension bolt 5a and the second suspension bolt 5b. It is. The first suspension bolt 5a and the third suspension bolt 5c, and the second suspension bolt 5b and the third suspension bolt 5c are preferably the suspension bolts 5 adjacent to each other, but the other suspension bolts 5 are interposed therebetween. It may be arranged. In FIG. 1, the first suspension bolt 5a is the suspension bolt 5 adjacent to the left side of the third suspension bolt 5c, and the second suspension bolt 5b is the suspension bolt 5 adjacent to the right side of the third suspension bolt 5c. In the following description, the first suspension bolt 5a, the second suspension bolt 5b, and the third suspension bolt 5c are collectively described as the suspension bolt 5 unless otherwise described.

  The ceiling vibration damping system 1 includes a first damper 6, a second damper 7, and a bundle 8 as main components.

  The first damper 6 and the second damper 7 are members that attenuate vibrations generated on the ceiling C. The first damper 6 and the second damper 7 are disposed so as to be inclined opposite to each other. If it demonstrates in detail, the 1st damper 6 and the 2nd damper 7 will be mutually inclined and arrange | positioned so that it may become V shape extended toward upper direction. Various dampers such as an oil damper, a viscoelastic damper, a gas damper, a hysteresis damper, a friction damper, and the like can be used as the damper constituting the first damper 6 and the second damper 7, but from the viewpoint of cost reduction and weight reduction. It is preferable to use a free piston type gas spring damper.

  The bundle 8 is a member that extends in the vertical direction. The bundle material 8 suppresses the out-of-plane deformation of the ceiling C accompanying the expansion and contraction of the first damper 6 and the second damper 7. More specifically, when a certain earthquake exceeding the middle earthquake occurs, the first damper 6 and the second damper 7 expand and contract. At this time, if there is no bundle 8, the suspension bolt 5 is buckled, and the ceiling C is deformed in an out-of-plane direction so as to wave. Therefore, by arranging the bundle member 8 extending in the vertical direction between the suspending element S and the ceiling C, deformation of the ceiling C in the out-of-plane direction is suppressed. For this reason, it is preferable that the bundle material 8 has a buckling load larger than that of the suspension bolt 5. The bundle material 8 is formed in a rod shape from a metal material such as stainless steel or a galvanized steel plate. Although the number of the bundle members 8 is not particularly limited, in the present embodiment, the first bundle member 8a disposed on the first suspension bolt 5a side of the third suspension bolt 5c and the second suspension bolt of the third suspension bolt 5c. There are provided two bundle members 8 separated from each other, a second bundle member 8b arranged on the 5b side.

  The first damper 6 is fixed to the first bundle member 8a. More specifically, the first damper 6 is fixed to the first bundle member 8a via the first auxiliary metal fitting 9a. The first auxiliary metal fitting 9a is a member for fixing the first damper 6 and the first bundle member 8a. The lower end portion of the first damper 6 and the lower end portion of the first bundle member 8a are fixed to the first auxiliary metal fitting 9a. And the 1st damper 6 and the 1st bundle material 8a are united by the 1st auxiliary | assistant metal fitting 9a, and are assembled as the V-shaped 1st assembly 10a. The first damper 6 is fixed so as not to swing with respect to the first auxiliary metal fitting 9a, and the first bundle member 8a is fixed so as to be able to swing with respect to the first auxiliary metal fitting 9a. For this reason, it is possible to change the inclination angle of the first damper 6 with respect to the first bundle 8a. Here, the phrase “fixed so as not to swing” means, for example, that the two members are fastened by a plurality of screws and the two members cannot swing relatively even if the screws are loosened. The phrase “fixed so as to be able to swing” means that, for example, it is fastened by a single bolt, and both members can be relatively swung by loosening the bolt.

  The second damper 7 is fixed to the second bundle member 8b. More specifically, the second damper 7 is fixed to the second bundle member 8b via the second auxiliary metal fitting 9b. The second auxiliary metal fitting 9b is a member that fixes the second damper 7 and the second bundle member 8b. The lower end of the second damper 7 and the lower end of the second bundle member 8b are fixed to the second auxiliary metal fitting 9b. And the 2nd damper 7 and the 2nd bundle material 8b are united by the 2nd auxiliary | assistant metal fitting 9b, and are assembled as the V-shaped 2nd assembly 10b. The second damper 7 is fixed so as not to swing with respect to the second auxiliary metal fitting 9b, and the second bundle member 8b is fixed so as to be able to swing with respect to the second auxiliary metal fitting 9b. For this reason, it is possible to change the inclination angle of the second damper 7 with respect to the second bundle 8b.

  The first assembly 10a and the second assembly 10b are arranged between the suspension base S and the ceiling C so that the first damper 6 and the second damper 7 are arranged in a V shape spreading upward. Are arranged.

  More specifically, the first auxiliary metal fitting 9a is fixed to the lower fixing metal fitting 13 fixed to the field receiver 4 in the vicinity of the third suspension bolt 5c, and the upper end portion of the first damper 6 is the first suspension bolt. The upper end of the first bundle member 8a is fixed to the third upper fixing bracket 14c fixed to the third suspension bolt 5c. Further, the second auxiliary metal fitting 9b is fixed to the lower fixing metal fitting 13 fixed to the field edge receiver 4 in the vicinity of the third suspension bolt 5c, and the upper end portion of the second damper 7 is connected to the second suspension bolt 5b. It is fixed to the fixed second upper fixing bracket 14b, and the upper end portion of the second bundle member 8b is fixed to the third upper fixing bracket 14c fixed to the third suspension bolt 5c. That is, the first auxiliary fitting 9a and the second auxiliary fitting 9b are both fixed to the same lower fixing fitting 13, and the upper end portion of the first bundle member 8a and the upper end portion of the second bundle member 8b are both the same third. It is fixed to the upper fixing bracket 14c.

  For this reason, the lower end of the first damper 6 is fixed to the field receiver 4 of the ceiling C via the first auxiliary metal fitting 9a and the lower fixing metal 13, and the upper end of the first damper 6 is It is fixed to the suspension element S via the upper fixing bracket 14a and the first suspension bolt 5a. The lower end portion of the second damper 7 is fixed to the edge receiver 4 of the ceiling C via the second auxiliary fitting 9b and the lower fixing fitting 13, and the upper end portion of the second damper 7 is the second upper portion. It is fixed to the suspension base S via the fixing bracket 14b and the second suspension bolt 5b. Further, the lower end portion of the first bundle member 8a is fixed to the field receiver 4 of the ceiling C via the first auxiliary fitting 9a and the lower fixing fitting 13, and the upper end portion of the first bundle member 8a is It is fixed to the suspension element S via the three upper fixing brackets 14c and the third suspension bolt 5c. The lower end portion of the second bundle member 8b is fixed to the edge receiver 4 of the ceiling C via the second auxiliary fitting 9b and the lower fixing fitting 13, and the upper end portion of the second bundle member 8b is It is fixed to the suspension element S via the three upper fixing brackets 14c and the third suspension bolt 5c.

  By the way, although the 1st damper 6 and the 2nd damper 7 expand | extend, the range of the minimum length and the maximum length is restrict | limited. For this reason, when the suspension length of the ceiling C by the suspension bolt 5, the interval between the suspension bolts 5, the inclination angle of the first damper 6 and the second damper 7, and the like change, the first damper 6 and the second damper 7 are attached to the lower fixing bracket. 13 and the first upper fixing bracket 14a and the second upper fixing bracket 14b may not be fixed. Therefore, the first damper 6 has a first joint 6 a that can adjust the length of the first damper 6 in the axial direction, and the second damper 7 adjusts the length of the second damper 7 in the axial direction. It has a possible second joint 7a. As the first joint 6a and the second joint 7a, for example, it is a nested structure capable of expanding and contracting the inner cylinder with respect to the outer cylinder, and the position of the inner cylinder with respect to the outer cylinder is determined by a fixing member such as a bolt. The structure can be fixed.

  Next, a construction method of the ceiling vibration damping system 1 according to this embodiment will be described.

  The construction method of the ceiling vibration suppression system 1 according to the present embodiment is a method of constructing the ceiling vibration suppression system 1 between the suspension source S and the ceiling C. In this method, first, the lower end of the first damper 6 and the lower end of the first bundle member 8a are fixed to the first auxiliary metal fitting 9a, and the first damper 6 and the first bundle member 8a are first V-shaped. Assemble to assembly 10a. Further, the lower end of the second damper 7 and the lower end of the second bundle member 8b are fixed to the second auxiliary metal fitting 9b, and the second damper 7 and the second bundle member 8b are formed into a V-shaped second assembly 10b. assemble.

  Next, in the vicinity of the third suspension bolt 5c, the first auxiliary metal fitting 9a is fixed to the lower fixing metal fitting 13 fixed to the field receiver 4, and the third upper fixing metal fitting 14c fixed to the third suspension bolt 5c is The upper end portion of the bundle member 8a is fixed, and the upper end portion of the first damper 6 is fixed to the first upper fixing bracket 14a fixed to the first suspension bolt 5a. At this time, by adjusting the inclination angle of the first damper 6 with respect to the first bundle 8a and adjusting the length of the first damper 6 by the first joint 6a, the position of the first upper fixing bracket 14a and the first Match the position of the upper end of the damper 6.

  Further, the second auxiliary metal fitting 9b is fixed to the lower fixing metal fitting 13 fixed to the field edge receiver 4 in the vicinity of the third hoisting bolt 5c, and the second upper fixing metal fitting 14c fixed to the third hoisting bolt 5c is connected to the second upper metal fitting 14c. The upper end portion of the bundle member 8b is fixed, and the upper end portion of the second damper 7 is fixed to the second upper fixing bracket 14b fixed to the second suspension bolt 5b. At this time, by adjusting the inclination angle of the second damper 7 with respect to the second bundle member 8b and adjusting the length of the second damper 7 by the second joint 6b, the position of the second upper fixing bracket 14b and the second Match the position of the upper end of the damper 7.

  Thereby, the construction of the ceiling vibration damping system 1 is completed. In addition, said construction order can be changed suitably.

  Here, a comparative example of the present embodiment will be described with reference to FIGS. 9 and 10.

  As shown in FIG. 9, the ceiling vibration suppression system 110 of the comparative example 1 is basically the same as the ceiling vibration suppression system 1 of the first embodiment, but the first damper 6, the second damper 7, and the bundle material. Only the point which is provided with the 1st brace 111 and the 2nd brace 112 instead of 8 is different from the ceiling damping system 1 of 1st embodiment.

  The first brace 111 and the second brace 112 are members for preventing the ceiling C from shaking, and are arranged to be inclined to the opposite sides so as to be V-shaped spreading upward. And the lower end part of the 1st brace 111 and the 2nd brace 112 is being fixed to the lower fixture 13 fixed to the field edge receiver 4. FIG. The upper end portion of the first brace 111 is fixed to a first upper fixing bracket 14a fixed to the first suspension bolt 5a. The upper end portion of the second brace 112 is fixed to a second upper fixing bracket 14b fixed to the second suspension bolt 5b.

  Since the ceiling damping system 110 of the comparative example 1 configured as described above does not include a configuration for attenuating the vibration of the ceiling C, the acceleration response of the ceiling C is amplified when an earthquake occurs, and also after the earthquake. If the ceiling C continues to shake, the ceiling C may be damaged.

  As shown in FIG. 10, the ceiling vibration suppression system 120 of the comparative example 2 is basically the same as the ceiling vibration suppression system 1 of the first embodiment, except that the bundle material 8 is not provided. It differs from the ceiling vibration damping system 1 of the embodiment.

  Since the ceiling vibration suppression system 120 of the comparative example 2 configured as described above does not include a configuration for stopping the vertical vibration of the ceiling C, even if a small earthquake occurs, the first damper 6 and the second damper 7 Since the ceiling C is deformed in the out-of-plane direction due to the expansion and contraction, the ceiling C may be damaged.

  On the other hand, in the ceiling vibration damping system 1 according to the present embodiment, the first damper 6 and the second damper 7 are disposed to be inclined to the opposite sides, so that when the earthquake occurs, the ceiling C shakes. Is attenuated by the first damper 6 and the second damper 7. Thereby, when an earthquake occurs, the acceleration of the ceiling C can be reduced and the shaking of the ceiling C can be attenuated at an early stage to suppress damage to the ceiling C. Furthermore, since the bundle member 8 extending in the vertical direction can suppress the out-of-plane deformation of the ceiling C accompanying the expansion and contraction of the first damper 6 and the second damper 7, damage to the ceiling C can be further suppressed.

  By the way, since the bundle material 8 loads the seismic force in the compression direction acting on the first damper 6 and the second damper 7, the first damper 6 and the second damper 7 should at least exhibit a damping force in the tensile direction. The damping force in the compression direction may not be exhibited. For this reason, the first damper 6 and the second damper 7 may be dampers in which the damping force in the compression direction is smaller than the damping force in the tension direction, or may be dampers that exhibit the damping force only in the tension direction. . In the case where dampers whose damping force in the compression direction is smaller than the damping force in the tensile direction are used as the first damper 6 and the second damper 7, compared to the case where dampers having the same damping force in the compression direction and damping force in the tension direction are used. Thus, the cost can be reduced. As the first damper 6 and the second damper 7, a damper that exhibits a damping force only in the tensile direction is used as compared with a damper that exhibits both a damping force in the compression direction and a damping force in the tension direction. Cost can be reduced.

  By the way, since the ceiling material 2 is very light with respect to the suspension source S, the vibration of the ceiling material 2 with respect to the suspension source S can be attenuated even with a small damping force. Therefore, the first damper 6 and the second damper 7 may be free piston type gas spring dampers. When free piston type gas spring dampers are used as the first damper 6 and the second damper 7, necessary and sufficient damping performance can be exhibited while reducing cost and weight.

  Further, by adjusting the axial lengths of the first damper 6 and the second damper 7 by the first joint 6a and the second joint 7a, the suspension length of the ceiling C, the interval between the suspension bolts 5, the first damper 6 The first damper 6 and the second damper 7 can be appropriately attached even when the construction is performed at a construction site where the inclination angle of the second damper 7 is different.

  Further, since the first damper 6 and the second damper 7 are arranged in a V-shape that spreads upward, the swing of the ceiling C can be appropriately damped by the first damper 6 and the second damper 7. .

  Moreover, since the 1st damper 6 and the 1st bundle material 8a are assembled as one unit, and the 2nd damper and the 2nd bundle material 8b are assembled as one unit, workability | operativity can be improved.

[Second Embodiment]
Next, a second embodiment will be described. The second embodiment is basically the same as the first embodiment (see FIG. 1), and only the configuration of the bundle is different from the first embodiment. For this reason, below, only the matter which is different from 1st embodiment is demonstrated, and description of the matter similar to 1st embodiment is abbreviate | omitted.

  As shown in FIG. 2, the ceiling vibration damping system 1 </ b> A according to the present embodiment includes a first damper 6, a second damper 7, a bundle member 21, and a support member 22 as main components.

  The bundle material 21 is formed in a cylindrical shape (tubular), and the suspension bolt 5 can be inserted on the inner peripheral side. The cylindrical shape of the bundle 21 is preferably cylindrical (circular) from the viewpoint of ease of manufacture.

  The support member 22 is a member that is attached to the third suspension bolt 5c and that can adjust the position of the third suspension bolt 5c in the axial direction. The support member 22 is, for example, a dish-like member that is movable in the vertical direction along the third suspension bolt 5c by inserting the third suspension bolt 5c, and a dish-like member that is screwed to the third suspension bolt 5c. And a nut that supports the nut from below. The dish-shaped member is a dish-shaped member that supports the bundle material 21 from below. For this reason, in the support member 22, a plate-shaped member can be moved to an up-down direction by rotating a nut.

  The bundle material 21 is sandwiched between the support member 22 and the suspension element S in a state where the first suspension bolt 5 a is inserted into the bundle material 21. That is, the bundle member 21 is sandwiched between the support member 22 and the suspension element S by rotating the nut of the support member 22 to move the dish-shaped member upward.

  Next, a construction method of the ceiling vibration damping system 1A according to the present embodiment will be described.

  First, the third suspension bolt 5 c is inserted into the bundle material 21, and the bundle material 21 is sandwiched between the support member 22 and the suspension element S. The third suspension bolt 5c is inserted into the bundle 21 before the ceiling C is suspended by the third suspension bolt 5c.

  Next, the lower end of the first damper 6 is fixed to the first auxiliary metal fitting 9a, and the lower end of the second damper 7 is fixed to the second auxiliary metal fitting 9b.

  Next, in the vicinity of the third suspension bolt 5c, the first auxiliary metal fitting 9a is pivotably fixed to the lower fixing metal fitting 13 fixed to the field receiver 4, and the first upper fixing fixed to the first suspension bolt 5a. The upper end of the first damper 6 is fixed to the metal fitting 14a. At this time, while adjusting the inclination angle of the first auxiliary metal fitting 9a with respect to the lower fixing metal fitting 13 and adjusting the length of the first damper 6 by the first joint 6a, the position of the first upper fixing metal fitting 14a and the first Match the position of the upper end of the damper 6.

  In addition, the second auxiliary metal fitting 9b is slidably fixed to the lower fixing metal fitting 13 fixed to the field receiver 4 in the vicinity of the third hoisting bolt 5c, and the second upper fixing metal fitting fixed to the second hoisting bolt 5b. The upper end portion of the second damper 7 is fixed to 14b. At this time, by adjusting the inclination angle of the second auxiliary metal fitting 9b with respect to the lower fixing metal fitting 13 and adjusting the length of the second damper 7 by the second joint 6b, the position of the second upper fixing metal fitting 14b and the second Match the position of the upper end of the damper 7.

  Thereby, the construction of the ceiling vibration damping system 1A is completed. In addition, said construction order can be changed suitably.

  Thus, in the ceiling vibration damping system 1A according to the present embodiment, with the third suspension bolt 5c inserted into the bundle member 21, the support member 22 capable of adjusting the position of the third suspension bolt 5c in the axial direction; Since the bundle material is sandwiched by the suspension element S, the bundle material 21 can be easily arranged.

[Third embodiment]
Next, a third embodiment will be described. The third embodiment is basically the same as the first embodiment (see FIG. 1), and is different in the arrangement of the first damper and the second damper, and further includes the first vibration amplification mechanism and the second vibration amplification mechanism. Only the point provided is different from the first embodiment. For this reason, below, only the matter which is different from 1st embodiment is demonstrated, and description of the matter similar to 1st embodiment is abbreviate | omitted.

  As shown in FIG. 3, the ceiling vibration damping system 1 </ b> B according to the present embodiment includes a first damper 31, a second damper 32, a bundle member 8, a first vibration amplification mechanism 33, and a second vibration amplification mechanism 34. Are the main components.

  The 1st damper 31 and the 2nd damper 32 are inclined and arranged in the mutually opposite side so that it may become an inverted V shape spreading toward the lower part. As the damper constituting the first damper 31 and the second damper 32, the same damper as the first damper 6 and the second damper 7 of the first embodiment can be used.

  The upper ends of the first damper 31 and the second damper 32 are fixed to a third upper fixing bracket 14c fixed to the third suspension bolt 5c. The lower end of the first damper 31 is connected to the first vibration amplification mechanism 33. The lower end of the second damper 32 is connected to the second vibration amplification mechanism 34.

  The first vibration amplifying mechanism 33 is a mechanism that amplifies the amount of expansion / contraction of the first damper 31 accompanying the vibration of the ceiling C, and is also called a toggle mechanism. The first vibration amplifying mechanism 33 includes a first brace 33 a that is swingably fixed to the lower fixture 13 fixed to the field receiver 4 and a lower end of the first damper 31, and a lower end of the first damper 31. And a second brace 33b that is swingably fixed to the first upper fixing bracket 14a. The connection between the first brace 33a and the lower fixing bracket 13, the connection between the first brace 33a and the first damper 31, the connection between the second brace 33b and the lower fixing bracket 13, and the connection between the second brace 33b and the first damper 31. The connection between the first brace 33a and the second brace 33b can be performed by, for example, a rotation support (pin support). The first brace 33a and the second brace 33b are connected to bend toward the first damper 31 side.

  The second vibration amplifying mechanism 34 is a mechanism that amplifies the amount of expansion / contraction of the second damper 32 accompanying the vibration of the ceiling C, and is also called a toggle mechanism. The second vibration amplification mechanism 34 includes a first brace 34a that is swingably fixed to the lower fixing bracket 13 and a lower end portion of the second damper 32, a lower end portion of the second damper 32, and a second upper fixing bracket 14b. And a second brace 34b fixed to be swingable. The connection between the first brace 34a and the lower fixing bracket 13, the connection between the first brace 34a and the second damper 32, the connection between the second brace 34b and the lower fixing bracket 13, and the connection between the second brace 34b and the second damper 32. The connection between the first brace 34a and the second brace 34b can be performed by, for example, a rotation support (pin support). The first brace 34a and the second brace 34b are connected to bend toward the second damper 32 side.

  Next, a construction method of the ceiling vibration damping system 1B according to this embodiment will be described.

  First, the upper end portion of the first bundle member 8a is fixed to the third upper fixing bracket 14c fixed to the third suspension bolt 5c, and the lower end portion of the first bundle member 8a is disposed in the vicinity of the third suspension bolt 5c. It fixes to the lower fixture 13 fixed to the field receiver 4. Moreover, while fixing the upper end part of the 2nd bundle material 8b to the 3rd upper fixing metal fitting 14c fixed to the 3rd suspension bolt 5c, the lower end part of the 2nd bundle material 8b is in the vicinity of the 3rd suspension bolt 5c. It fixes to the lower fixture 13 fixed to the field receiver 4.

  Next, the lower end of the first brace 33a is slidably connected to the lower fixing bracket 13 fixed to the field receiver 4 in the vicinity of the third suspension bolt 5c, and the upper end of the second brace 33b is connected to the first brace 33b. The upper part of the first brace 33a and the lower end part of the second brace 33b are connected so as to be swingable. Further, the lower end of the first brace 34a is slidably connected to the lower fixing bracket 13 fixed to the field receiver 4 in the vicinity of the third suspension bolt 5c, and the upper end of the second brace 34b is connected to the second brace 34b. The upper part of the first brace 34a and the lower end part of the second brace 34b are swingably connected to the second upper fixing bracket 14b fixed to the suspension bolt 5b.

  Next, the upper end of the first damper 31 is fixed to the third upper fixing bracket 14c fixed to the third suspension bolt 5c, and the lower end of the first damper 31 is connected to the upper end of the first brace 33a. It connects to the connection part with the lower end part of the two braces 33b so that rocking | fluctuation is possible. The upper end of the second damper 32 is fixed to the third upper fixing bracket 14c fixed to the third suspension bolt 5c, and the lower end of the second damper 32 is connected to the upper end of the first brace 34a and the second end. The brace 34b is pivotably coupled to a coupling portion with the lower end of the brace 34b.

  Thereby, the construction of the ceiling vibration damping system 1B is completed. In addition, said construction order can be changed suitably.

  Thus, in the ceiling vibration suppression system 1B according to the present embodiment, when the ceiling C shakes when an earthquake occurs, the first vibration amplifying mechanism 33 causes the first brace 33a and the second brace 33b to be bent first. The expansion / contraction amount of the damper 31 is amplified, and the second vibration amplification mechanism 34 amplifies the expansion / contraction amount of the second damper 32 by bending of the first brace 34a and the second brace 34b. Thereby, the damping efficiency of the first damper 31 and the second damper 32 can be improved.

[Fourth embodiment]
Next, a fourth embodiment will be described. The fourth embodiment is basically the same as the first embodiment (see FIG. 1), and the first assembly (first bundle member) and the second assembly (second bundle member) are separated. Only the first embodiment is different. For this reason, below, only the matter which is different from 1st embodiment is demonstrated, and description of the matter similar to 1st embodiment is abbreviate | omitted.

  As shown in FIG. 4, the ceiling vibration damping system 1 </ b> C according to the present embodiment includes a first damper 6, a second damper 7, and a bundle member 8 as main components.

  In addition to the first suspension bolt 5a, the second suspension bolt 5b, and the third suspension bolt 5c, the plurality of suspension bolts 5 suspended from the suspension source S further includes a third suspension bolt 5c of the first suspension bolt 5a, Includes a fourth suspension bolt 5d disposed on the opposite side and a fifth suspension bolt 5e disposed on the opposite side of the third suspension bolt 5c of the second suspension bolt 5b. The first suspension bolt 5a and the fourth suspension bolt 5d, and the second suspension bolt 5b and the fifth suspension bolt 5e are preferably the suspension bolts 5 that are adjacent to each other. It may be arranged. In FIG. 4, the fourth suspension bolt 5d is the suspension bolt 5 adjacent to the left side of the first suspension bolt 5a, and the fifth suspension bolt 5e is the suspension bolt 5 adjacent to the right side of the second suspension bolt 5b.

  As in the first embodiment, the first damper 6 and the first bundle member 8a are united by the first auxiliary metal fitting 9a and assembled as a V-shaped first assembly 10a. The second damper 7 and the second bundle member 8b are united by a second auxiliary metal fitting 9b and assembled as a V-shaped second assembly 10b. However, in the fourth embodiment, the first assembly 10a and the second assembly 10b are arranged at positions separated from each other, and the first damper 6 and the second damper 7 are V-shaped and spread upward. Are arranged as follows.

  More specifically, the first auxiliary metal fitting 9a is fixed to a first lower fixing metal fitting 13a fixed to the field receiver 4 in the vicinity of the first suspension bolt 5a, and the upper end portion of the first damper 6 is It is fixed to the fourth upper fixing bracket 14d fixed to the four suspension bolts 5d, and the upper end portion of the first bundle member 8a is fixed to the first upper fixing bracket 14a fixed to the first suspension bolt 5a. . The second auxiliary metal fitting 9b is fixed to a second lower fixing metal fitting 13b fixed to the field receiver 4 in the vicinity of the second suspension bolt 5b, and the upper end portion of the second damper 7 is connected to the fifth suspension bolt. The upper end of the second bundle member 8b is fixed to the second upper fixing bracket 14b fixed to the second suspension bolt 5b. That is, the first auxiliary metal fitting 9a and the second auxiliary metal fitting 9b are fixed to the first lower fixing metal fitting 13a and the second lower fixing metal fitting 13b, which are different from each other. The upper end of the material 8b is fixed to a first upper fixing bracket 14a and a second upper fixing bracket 14b which are different from each other.

  For this reason, the first assembly 10a (first bundle member 8a) and the second assembly 10b (second bundle member 8b) are arranged at positions separated from each other. And the lower end part of the 1st damper 6 is being fixed to the field receptacle 4 of the ceiling C via the 1st auxiliary | assistant metal fitting 9a and the 1st lower fixing metal fitting 13a, and the upper end part of the 1st damper 6 is It is fixed to the suspension base S via the fourth upper fixing bracket 14d and the fourth suspension bolt 5d. Further, the lower end of the second damper 7 is fixed to the field edge receiver 4 of the ceiling C via the second auxiliary metal fitting 9b and the second lower fixing metal fitting 13b, and the upper end of the second damper 7 is It is fixed to the suspension base S via the fifth upper fixing bracket 14e and the fifth suspension bolt 5e. Moreover, the lower end part of the 1st bundle member 8a is being fixed to the field receptacle 4 of the ceiling C via the 1st auxiliary | assistant metal fitting 9a and the 1st lower fixing bracket 13a, and the upper end part of the 1st bundle member 8a Is fixed to the suspension base S via the first upper fixing bracket 14a and the first suspension bolt 5a. Further, the lower end portion of the second bundle member 8b is fixed to the edge receiver 4 of the ceiling C via the second auxiliary fitting 9b and the second lower fixing fitting 13b, and the upper end portion of the second bundle member 8b is The second upper fixing bracket 14b and the second suspension bolt 5b are fixed to the suspension base S.

  As described above, in the ceiling vibration damping system 1C according to the present embodiment, the first assembly 10a and the second assembly 10b are arranged at positions separated from each other, but the first damper 6 and the second damper 7 are The bundle 8 is arranged to be inclined to the opposite sides and attenuates the vibration generated on the ceiling C. The bundle 8 extends in the vertical direction and undergoes out-of-plane deformation of the ceiling C due to the expansion and contraction of the first damper 6 and the second damper 7. suppress. For this reason, similarly to the first embodiment, when an earthquake occurs, the acceleration of the ceiling C can be reduced and the shaking of the ceiling C can be attenuated at an early stage to suppress damage to the ceiling C.

[Fifth embodiment]
Next, a fifth embodiment will be described. The fifth embodiment is basically the same as the first embodiment (see FIG. 1), and the first and second embodiments are the same as the first embodiment only in that the first assembly and the second assembly are arranged in the left-right direction. Is different. For this reason, below, only the matter which is different from 1st embodiment is demonstrated, and description of the matter similar to 1st embodiment is abbreviate | omitted.

  As shown in FIG. 5, the ceiling vibration damping system 1 </ b> D according to the present embodiment includes a first damper 6, a second damper 7, and a bundle member 8 as main components.

  As in the first embodiment, the first damper 6 and the first bundle 8a are united by a first auxiliary metal fitting 9a and assembled as a V-shaped first assembly 10a. The damper 7 and the second bundle member 8b are united by a second auxiliary metal fitting 9b and assembled as a V-shaped second assembly 10b. However, in 5th embodiment, the 1st assembly 10a and the 2nd assembly 10b are each arrange | positioned right and left reversely with respect to 1st embodiment, and the 1st damper 6 and the 2nd damper 7 face downward. It arranges so that it may become a V-shape spreading.

  More specifically, the first auxiliary metal fitting 9a is fixed to a first lower fixing metal fitting 13a fixed to the field receiver 4 in the vicinity of the first suspension bolt 5a, and the upper end portion of the first damper 6 is It is fixed to the third upper fixing bracket 14c fixed to the three suspension bolts 5c, and the upper end portion of the first bundle member 8a is fixed to the first upper fixing bracket 14a fixed to the first suspension bolt 5a. . The second auxiliary metal fitting 9b is fixed to a second lower fixing metal fitting 13b fixed to the field receiver 4 in the vicinity of the second suspension bolt 5b, and the upper end portion of the second damper 7 is connected to the third suspension bolt. The upper part of the second bundle member 8b is fixed to the second upper fixing member 14b fixed to the second suspension bolt 5b.

  As described above, in the ceiling vibration damping system 1D according to the present embodiment, the first assembly 10a and the second assembly 10b are arranged in the left-right direction opposite to the first embodiment, but the first damper 6 And the second damper 7 are arranged so as to be inclined to the opposite sides to dampen the vibration generated in the ceiling C, and the bundle 8 extends in the vertical direction and extends along the expansion and contraction of the first damper 6 and the second damper 7. Suppresses out-of-plane deformation of C. For this reason, similarly to the first embodiment, when an earthquake occurs, the acceleration of the ceiling C can be reduced and the shaking of the ceiling C can be attenuated at an early stage to suppress damage to the ceiling C.

[Sixth embodiment]
Next, a sixth embodiment will be described. The sixth embodiment is basically the same as the fourth embodiment (see FIG. 4), and only the point that the first assembly and the second assembly are arranged in the left and right directions is the same as the fourth embodiment. Is different. For this reason, below, only the matter which is different from 4th embodiment is demonstrated, and description of the matter similar to 4th embodiment is abbreviate | omitted.

  As shown in FIG. 6, the ceiling vibration damping system 1 </ b> E according to the present embodiment includes a first damper 6, a second damper 7, and a bundle member 8 as main components.

  As in the fourth embodiment, the first damper 6 and the first bundle 8a are united by a first auxiliary metal fitting 9a and assembled as a V-shaped first assembly 10a. The damper 7 and the second bundle member 8b are united by a second auxiliary metal fitting 9b and assembled as a V-shaped second assembly 10b. However, in 6th embodiment, the 1st assembly 10a and the 2nd assembly 10b are each arrange | positioned right and left reversely with respect to 4th embodiment, and the 1st damper 6 and the 2nd damper 7 face downward. It arranges so that it may become a V-shape spreading.

  More specifically, the first auxiliary metal fitting 9a is fixed to the fourth lower fixing metal fitting 13d fixed to the field receiver 4 in the vicinity of the fourth suspension bolt 5d, and the upper end portion of the first damper 6 is the first It is fixed to a first upper fixing bracket 14a fixed to the suspension bolt 5a, and an upper end portion of the first bundle member 8a is fixed to a fourth upper fixing bracket 14d fixed to the fourth suspension bolt 5d. Further, the second auxiliary metal fitting 9b is fixed to a fifth lower fixing metal fitting 13e fixed to the field edge receiver 4 in the vicinity of the fifth hoisting bolt 5e, and the upper end portion of the second damper 7 is connected to the second hoisting bolt. The upper part of the second bundle member 8b is fixed to the fifth upper fixing member 14e fixed to the fifth suspension bolt 5e.

  As described above, in the ceiling vibration damping system 1E according to the present embodiment, the first assembly 10a and the second assembly 10b are arranged opposite to each other with respect to the fourth embodiment, but the first damper 6 And the second damper 7 are arranged so as to be inclined to the opposite sides to dampen the vibration generated in the ceiling C, and the bundle 8 extends in the vertical direction and extends along the expansion and contraction of the first damper 6 and the second damper 7. Suppresses out-of-plane deformation of C. For this reason, similarly to the fourth embodiment, when an earthquake occurs, the acceleration of the ceiling C can be reduced and the shaking of the ceiling C can be attenuated at an early stage to suppress damage to the ceiling C.

[Seventh embodiment]
Next, a seventh embodiment will be described. The seventh embodiment is basically the same as the fifth embodiment (see FIG. 5), and differs from the fifth embodiment only in that the ceiling damping system is not fixed to the suspension bolt. For this reason, below, only the matter which is different from 5th embodiment is demonstrated, and description of the matter similar to 5th embodiment is abbreviate | omitted.

  As shown in FIG. 7, the ceiling vibration damping system 1 </ b> F according to the present embodiment includes a first damper 6, a second damper 7, and a bundle member 8 as main components.

  As in the fifth embodiment, the first damper 6 and the first bundle 8a are united by a first auxiliary metal fitting 9a and assembled as a V-shaped first assembly 10a. The damper 7 and the second bundle member 8b are united by a second auxiliary metal fitting 9b and assembled as a V-shaped second assembly 10b. However, in the seventh embodiment, the first assembly 10a and the second assembly 10b are fixed to the suspension source S and the ceiling C at a position away from the suspension bolt. In the first assembly 10a, the first damper 6 is arranged on the second assembly 10b side, and in the second assembly 10b, the second damper 7 is arranged on the first assembly 10a side. The one assembly 10a and the second assembly 10b are arranged so that the first damper 6 and the second damper 7 are V-shaped and spread upward.

  More specifically, the first auxiliary metal fitting 9a is fixed to a sixth lower fixing metal fitting 13f fixed to the field receiver 4 at a position away from the hanger bolt 5, and the upper end portion of the first damper 6 is provided with a hanger bolt. The upper end of the first bundle member 8 a is fixed to the suspension base S at a position away from the suspension bolt 5. The second suspension base fixing bracket 17b is fixed. The second auxiliary metal fitting 9b is fixed to a seventh lower fixing metal fitting 13g fixed to the field edge receiver 4 at a position away from the suspension bolt 5, and the upper end portion of the second damper 7 is The upper end of the second bundle member 8b is fixed to the suspension base S at a position distant from the suspension bolt 5 and is fixed to the first suspension base fixing bracket 17a fixed to the suspension base S at a distant position. It is fixed to the three suspension base fixing bracket 17c. And since the upper end part of the 1st damper 6 and the upper end part of the 2nd damper 7 are being fixed to the same 1st suspension base metal fitting 17a, the 1st assembly 10a and the 2nd assembly 10b are the same. They are placed next to each other.

  As described above, in the ceiling vibration damping system 1D according to the present embodiment, the first assembly 10a and the second assembly 10b are respectively arranged opposite to the left and right with respect to the fifth embodiment, but the first damper 6 And the second damper 7 are arranged so as to be inclined to the opposite sides to dampen the vibration generated in the ceiling C, and the bundle 8 extends in the vertical direction and extends along the expansion and contraction of the first damper 6 and the second damper 7. Suppresses out-of-plane deformation of C. For this reason, similarly to the fifth embodiment, when an earthquake occurs, the acceleration of the ceiling C can be reduced, and the shaking of the ceiling C can be attenuated at an early stage to suppress damage to the ceiling C.

[Eighth embodiment]
Next, an eighth embodiment will be described. The eighth embodiment is basically the same as the seventh embodiment (see FIG. 7), and the first assembly (first bundle member) and the second assembly (second bundle member) are separated. Only the seventh embodiment is different. For this reason, below, only the matter which is different from 7th embodiment is demonstrated, and description of the matter similar to 7th embodiment is abbreviate | omitted.

  As shown in FIG. 8, the ceiling vibration damping system 1G according to the present embodiment includes a first damper 6, a second damper 7, and a bundle member 8 as main components.

  As in the seventh embodiment, the first damper 6 and the first bundle 8a are united by the first auxiliary metal fitting 9a and assembled as a V-shaped first assembly 10a. The damper 7 and the second bundle member 8b are united by a second auxiliary metal fitting 9b and assembled as a V-shaped second assembly 10b. However, in the eighth embodiment, the first assembly 10a and the second assembly 10b are arranged at positions separated from each other, and the first damper 6 and the second damper 7 have a V-shape that spreads downward. Are arranged as follows.

  More specifically, the first auxiliary fitting 9a is fixed to an eighth lower fixing fitting 13h fixed to the field receiver 4 at a position away from the hanging bolt 5, and the upper end portion of the first damper 6 is attached to the hanging bolt. The upper end of the first bundle member 8 a is fixed to the suspension base S at a position away from the suspension bolt 5. It is fixed to the fifth suspension base fixing bracket 17e. Further, the second auxiliary metal fitting 9b is fixed to a ninth lower fixing metal fitting 13i fixed to the field edge receiver 4 at a position away from the suspension bolt 5, and the upper end portion of the second damper 7 is connected to the suspension bolt 5 and It is fixed to the sixth suspension base fixing bracket 17f fixed to the suspension base S at a position away from the fourth suspension base fixing bracket 17d, and the upper end portion of the second bundle member 8b is at a position away from the suspension bolt 5. It is fixed to a seventh suspension base fixing bracket 17g fixed to the suspension base S. And the upper end part of the 1st damper 6 and the upper end part of the 2nd damper 7 are being fixed to the mutually different 4th suspension base fixing bracket 17d and the 6th suspension base fixing bracket 17f, and thereby the first assembly 10a. And the second assembly 10b are spaced apart from each other.

  Thus, in the ceiling vibration suppression system 1G according to the present embodiment, the first assembly 10a and the second assembly 10b are arranged at positions separated from each other, but the first damper 6 and the second damper 7 are The bundle 8 is arranged to be inclined to the opposite sides and attenuates the vibration generated on the ceiling C. The bundle 8 extends in the vertical direction and undergoes out-of-plane deformation of the ceiling C due to the expansion and contraction of the first damper 6 and the second damper 7. suppress. For this reason, similarly to the seventh embodiment, when an earthquake occurs, the acceleration of the ceiling C can be reduced and the shaking of the ceiling C can be attenuated at an early stage to suppress damage to the ceiling C.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments and can be variously modified.

  For example, in the above-described embodiment, the specific attachment positions and attachment means of the first damper, the second damper and the bundle material with respect to the suspension base and the ceiling have been described. However, the vibration generated by the first damper and the second damper on the ceiling is described. The first damper, the second damper and the bundle can be damped by any position, means, etc. as long as the bundle can suppress the out-of-plane deformation of the ceiling due to expansion and contraction of the first damper and the second damper. It may be attached to the hanging base and the ceiling.

  Moreover, in the said embodiment, you may provide a brace like the comparative example 1. FIG. By providing such a brace, it is possible to further improve the proof stress of the ceiling vibration damping system, and it is possible to appropriately prevent the ceiling material from being damaged particularly during a middle earthquake.

  Moreover, in the said embodiment, you may provide the reinforcing material arrange | positioned on the opposite side to the ceiling material 2 of the field receiver 4 (above the field receiver 4), and extended in the direction orthogonal to the field receiver 4. By providing such a reinforcing material, it is possible to further improve the yield strength of the ceiling vibration damping system. In addition, the lower end part of a brace may be fixed to a field edge receiver, and may be fixed to a reinforcing material.

1, 1A, 1B, 1C, 1D, 1F, 1G ... Ceiling damping system, 2 ... Ceiling material, 3 ... Field edge, 4 ... Field edge receiver, 5 ... Suspension bolt, 5a ... First suspension bolt, 5b ... No. Two suspension bolts, 5c ... Third suspension bolt, 5d ... Fourth suspension bolt, 5e ... Fifth suspension bolt, 6 ... First damper, 6a ... First joint, 6b ... Second joint, 7 ... Second damper, 7a ... Second joint, 8 ... Bundle material, 8a ... First bundle material, 8b ... Second bundle material, 9a ... First auxiliary metal fitting, 9b ... Second auxiliary metal fitting, 10a ... First assembly, 10b ... Second set Solid, 11 ... Clip, 12 ... Hanging bracket, 13 ... Lower fixing bracket, 13a ... First lower fixing bracket, 13b ... Second lower fixing bracket, 13d ... Fourth lower fixing bracket, 13e ... Fifth lower fixing bracket, 13f: sixth lower fixing bracket, 13g: seventh lower fixing bracket, 13h: eighth lower fixing bracket, 13i: ninth lower fixing bracket 14a ... First upper fixing bracket, 14b ... Second upper fixing bracket, 14c ... Third upper fixing bracket, 14d ... Fourth upper fixing bracket, 14e ... Fifth upper fixing bracket, 17a ... First hanging base fixing bracket, 17b ... second suspension base fixing bracket, 17c ... third suspension base fixing bracket, 17d ... fourth suspension base fixing bracket, 17e ... fifth suspension base fixing bracket, 17f ... sixth suspension base fixing bracket, 17g ... seventh suspension base Fixing bracket, 21 ... bundled material, 22 ... support member, 31 ... first damper, 32 ... second damper, 33 ... first vibration amplification mechanism, 33a ... first brace, 33b ... second brace, 34 ... second vibration Amplifying mechanism, 34a ... first brace, 34b ... second brace, 110 ... ceiling damping system, 111 ... first brace, 112 ... second brace, 120 ... ceiling damping system, C ... ceiling, S ... hanging base.

Claims (7)

A ceiling vibration control system disposed between a suspension base and a ceiling suspended from the suspension base,
A first damper and a second damper which are arranged to be inclined to each other and attenuate vibrations generated in the ceiling;
A bundle that extends in the vertical direction and suppresses the out-of-plane deformation of the ceiling accompanying expansion and contraction of the first damper and the second damper,
Ceiling damping system. In the first damper and the second damper, the damping force in the compression direction is smaller than the damping force in the tensile direction.
The ceiling vibration damping system according to claim 1. The first damper has a first joint capable of adjusting the length of the first damper in the axial direction;
The second damper has a second joint capable of adjusting the length in the axial direction of the second damper.
The ceiling vibration damping system according to claim 1 or 2. The first damper and the second damper are arranged in a V shape spreading upward.
The ceiling vibration suppression system as described in any one of Claims 1-3. The first damper and the second damper are arranged in a V shape spreading downward.
The ceiling vibration suppression system as described in any one of Claims 1-4. The bundle has a first bundle and a second bundle separated from each other;
The first damper is fixed to the first bundle;
The second damper is fixed to the second bundle material,
The ceiling vibration suppression system according to any one of claims 1 to 5. A first vibration amplification mechanism that amplifies the amount of expansion and contraction of the first damper associated with the vibration of the ceiling;
A second vibration amplification mechanism that amplifies the expansion and contraction amount of the second damper accompanying the vibration of the ceiling,
The ceiling vibration suppression system according to any one of claims 1 to 6.

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