JP2013167294A - Anti-vibration suspension earthquake damping structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably support and protect equipment by suspending it from a ceiling without a necessity of a large movable space by effectively absorbing inputted vibration energy into a small space.SOLUTION: There is provided an anti-vibration suspension earthquake damping structure which comprises: a plurality of suspension bolts 3 whose upper ends are screwed into fixing implements 2 arranged at a ceiling frame F; and connecting implements 5 arranged at respective lower ends of the suspension bolts and connected to connecting pieces 4 fixed to equipment W. The suspension bolts have first suspension bolts 3A and second suspension bolts 3B which are slidably inserted into slit holes via openings of the slit holes 6 which are formed at the connecting pieces, and fixed to the connecting pieces via the connecting implements. The structure also comprises a vibration damping connecting unit 10 which connects lower ends of the first suspension bolts and upper ends of the second suspension bolts so as to be relatively movable in bolt shaft O-directions of the suspension bolts, consumes the vibration energy of vibration which is inputted accompanied by the relative movement, and reduces vibration loads acting on the suspension bolts.

Description

  The present invention relates to an anti-vibration hanging vibration-reducing structure that supports equipment on a ceiling.

  Various equipment is installed in a building such as a condominium or a building, and there are a lot of equipment supported in a suspended state from the ceiling depending on the application and installation situation. For example, an indoor unit of an air conditioner, a lighting device, an air conditioning duct, piping, and the like can be given. In this case, as shown in FIGS. 8 and 9, the equipment device W is generally supported by a ceiling suspension structure 100 (see, for example, Patent Document 1).

  This ceiling-suspended structure 100 has a plurality of upper ends screwed to the inserts 102 attached to the ceiling structure 101 and lower ends connected to a connecting fitting 103 fixed to the equipment W. A suspension bolt 104 is provided. With the ceiling structure 100 configured as described above, the equipment device W is stably supported by the ceiling.

By the way, an earthquake is an inevitable natural phenomenon that occurs in association with the activity of the Earth's internal structure for approximately 4.6 billion years after the birth of the Earth. Various countermeasures against earthquakes have been made under the Western science and technology philosophy of overcoming and overcoming nature.
For example, an earthquake resistant structure is known as one of them. This is for the purpose of resisting an earthquake with strength. For example, by improving the strength (rigidity) of the above-described ceiling-suspended structure 100 itself, the equipment W that is a protection target is protected from the vibration of the earthquake. It is a structural method to protect.

  In addition, seismic isolation structures are known as other conventional earthquake countermeasures. The purpose of this is to make the effects of earthquakes as zero as possible. Seismic isolation mechanisms such as isolators and slide rails that can be flexibly displaced in the horizontal direction while supporting the object to be protected in the vertical direction. And the seismic isolation mechanism moves slowly so that the vibration of the earthquake is not transmitted to the object to be protected.

JP-A-7-166711

  By the way, the conventional ceiling-suspended structure 100 adopts the earthquake-resistant structure method as described above. However, depending on the magnitude of the assumed earthquake, excessive deformation (movement distance) is suppressed and impact force is alleviated. Since the viewpoint was lacking, it was not sufficient in terms of protecting the equipment W when excessive acceleration was applied to the equipment W.

Specifically, as shown in FIG. 9, when a force F due to acceleration acts on the equipment W due to the occurrence of an earthquake, the suspension bolt 104 is bent due to the influence. At this time, since an excessive acceleration is applied in the case of a large earthquake, the bending deformation of the suspension bolt 104 also increases, and as shown in FIG. 10, for example, on the upper end side of the suspension bolt 104 that is a coupling portion with the insert 102. A large bending moment was likely to occur. Therefore, the suspension bolt 104 is broken or deformed, and it is difficult to protect the equipment device W. In addition, the M figure in a figure is a stress figure of the bending moment which acts on the suspension bolt 104. FIG.

Further, along with the bending deformation of the suspension bolt 104, as shown in FIG. 11, deformation (twisting, etc.) of the connection fitting 103 or loosening between the connection fitting 103 and the suspension bolt 104 may occur. In this respect as well, it was difficult to protect the equipment W.

  On the other hand, when the suspension bolt 104 is lengthened, it can be expected to function as a seismic isolation structure, but in order to respond to a large earthquake, in addition to securing the suspension length, the equipment W can be displaced. It is necessary to secure a large space. However, for example, when a plurality of facility devices W are suspended and supported in a limited space in the ceiling, it is difficult to sufficiently secure the suspension length and the space.

  The present invention has been made in view of such circumstances, and the object thereof is not to require a large movable space, and can efficiently absorb the input vibration energy within a small space, thereby stabilizing the equipment. It is to provide an anti-vibration suspended vibration-reducing structure that can be suspended and supported.

In order to achieve the above object, the present invention provides the following means.
(1) A vibration-proof suspended vibration-reducing structure according to the present invention is a structure that supports equipment suspended from a ceiling, and includes a plurality of suspensions whose upper ends are screwed to fixtures provided on a ceiling casing. A plurality of bolts, and a connection tool provided at a lower end portion of each of the plurality of suspension bolts and connected to a connection piece fixed to the equipment, and the suspension bolt is disposed on the ceiling housing side. And a first suspension bolt whose upper end is screwed to the fixture, and is arranged on the equipment side, and is slidably inserted into the slit hole through the opening of the slit hole formed in the connecting piece. And a second suspension bolt fixed to the coupling piece via the coupling tool, and a lower end portion of the first suspension bolt and an upper end portion of the second suspension bolt are connected to the suspension bolt. Coupled to the bolt shaft so as to be relatively movable, and Consumes vibration energy of the vibration which is input in association with the pair moving, characterized in that it comprises a vibration reducing connection unit to reduce the vibration load acting on the hanger rod.

According to the vibration-proof hanging vibration-reducing structure according to the present invention, when vibration is input from the outside to the equipment due to the occurrence of an earthquake or the like, the vibration starts to be transmitted to the whole vibration-proof hanging vibration-reducing structure, The vibration reduction connecting unit consumes the vibration energy of the vibration, for example, by attenuation and absorption.
Specifically, when the equipment and the suspension bolt that supports the equipment are suspended by vibration, the first suspension bolt attached to the ceiling housing side and the equipment side And the second suspension bolt attached to each other move relative to each other in the bolt axial direction. Then, the vibration reduction connecting unit that connects the first suspension bolt and the second suspension bolt so as to be capable of relative movement in the bolt axis direction attenuates, absorbs and consumes vibration energy along with the relative movement.

  Thereby, it can reduce by the part which consumed the vibration energy amount which acts on a suspension bolt among the total energy amount of vibration, and can reduce the vibration load to a suspension bolt. In other words, it can be reduced. As a result, the occurrence of breakage or deformation of the suspension bolt can be suppressed, and the equipment can be stably suspended and protected.

In addition, since the suspension bolt is divided into the first suspension bolt and the second suspension bolt and both suspension bolts are connected by the vibration reduction connection unit, the equipment is moved greatly by measures such as elongating the suspension bolt, for example. There is no need to adopt a conventional seismic isolation system that absorbs vibration. Therefore, the above-described effects can be achieved without requiring a large movable space.
Further, even when the first suspension bolt and the second suspension bolt are still connected with the vibration reduction connection unit, the second suspension bolt is combined with the connection piece by slidingly inserting the second suspension bolt into the slit hole. Therefore, the installation workability of the vibration-proof suspended vibration-reducing structure can be improved.

(2) In the vibration-proof suspended vibration-reducing structure according to the present invention, the couplers are detachably combined with each other and can be engaged with the second suspension bolt from the outside in the radial direction in accordance with the combination. It is preferable to include a clip having a plurality of divided bodies.

  In this case, after the second suspension bolt is slid into the slit hole, the second suspension bolt and the connection piece can be integrally connected using a clip. In particular, when this clip is attached, each divided body can be meshed with the second suspension bolt from the outside in the radial direction simply by combining a plurality of divided bodies. And it can be installed with a single touch. Therefore, unlike the case of using a nut, the installation workability of the vibration-proof suspended vibration-reducing structure can be further improved. In addition, since the clip is more conspicuous than the nut, it is easy to effectively prevent human errors such as forgetting to attach.

(3) In the vibration-proof suspended vibration-damping structure according to the present invention, the plurality of divided bodies are rotatably connected and can be combined with each other by a rotating operation, and the clips are combined with each other. It is preferable that a lock mechanism capable of holding and releasing the combined state of the plurality of divided bodies is provided.

  In this case, since a plurality of divided bodies can be combined with each other only by a turning operation, the clip can be easily attached. Further, since the lock mechanism is provided, the combined state of the plurality of divided bodies can be easily held and released without using a tool or the like.

  According to the vibration-proof suspended vibration-reducing structure according to the present invention, a large movable space is not required, the input vibration energy can be efficiently absorbed in a small space, and the equipment is stably supported and suspended. can do. In addition, the installation work can be easily performed, and the installation workability can be improved.

1 is an external perspective view showing an embodiment of a vibration-proof suspended vibration-reducing structure according to the present invention. It is sectional drawing along the AA line shown in FIG. It is a top view of the connection piece shown in FIG. It is a perspective view of the vibration reduction connection unit shown in FIG. FIG. 3 is a top view of the clip shown in FIG. 2. It is the side view which looked at the clip shown in FIG. 5 from the arrow B direction. It is a figure which shows the state just before making the suspension bolt shown in FIG. 4 slide-insert in the slit hole of a connection piece. It is a whole perspective view which shows an example of the conventional anti-vibration hanging vibration reduction structure. FIG. 9 is a side view of the vibration-proof hanging vibration reduction structure shown in FIG. 8. FIG. 9 is a simplified diagram when an external force is applied to the equipment from the state shown in FIG. 8 and the suspension bolt is bent and deformed. It is a figure which shows a state when external force acts on equipment from the state shown in FIG. 8, and a suspension bolt bends and deforms.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of a vibration-proof suspended vibration-reducing structure according to the invention will be described with reference to the drawings.
As shown in FIG. 1, a vibration-proof suspended vibration-reducing structure 1 of the present embodiment is a unit that supports and suspends equipment equipment W (suspended support), and is attached to a ceiling frame F (for example, a ceiling concrete structure). Four suspension bolts 3 whose upper end portions are screwed to the embedded inserts (fixtures) 2, and connections that are respectively provided at the lower end portions of these four suspension bolts 3 and fixed to the equipment W And a connector 5 connected to the piece 4.
In addition, in FIG. 1, illustration of the connector 5 and the vibration reduction connection unit 10 mentioned later is simplified.

In the present embodiment, the suspension bolt 3 is suspended from the ceiling frame F in the vertical direction. And the axis | shaft which penetrates the center of each suspension bolt 3 is called the bolt axis | shaft O, The direction which goes to the ceiling housing | casing F side from the connection piece 4 side along this bolt axis | shaft O is called upper side, and the opposite direction is called lower side. A direction perpendicular to the bolt axis O is referred to as a radial direction. Furthermore, the direction in which the suspension bolts 3 are arranged with the equipment device W sandwiched therebetween in the radial direction is referred to as the left-right direction L1, and the direction orthogonal to the left-right direction L1 in the radial direction is referred to as the front-rear direction L2.
Moreover, the facility equipment W is not particularly limited, and examples thereof include an indoor unit of an air conditioner. The lower surface of the equipment W is flush with a ceiling interior panel (not shown).

As described above, the suspension bolt 3 is suspended from the ceiling casing F by screwing the upper end of the suspension bolt 3 to the insert 2. At this time, the suspension bolts 3 are arranged at intervals in the left-right direction L1 and the front-rear direction L2.
By the way, as shown in FIG. 2, each suspension bolt 3 is disposed on the ceiling housing F side, and the upper end portion thereof is disposed on the equipment device W side with the first suspension bolt 3 </ b> A screwed to the insert 2. And a second suspension bolt 3B arranged coaxially with respect to the first suspension bolt 3A. Therefore, the bolt shaft O is a common shaft that penetrates the first suspension bolt 3A and the second suspension bolt 3B in common.

  The second suspension bolt 3B is slidably inserted into the slit hole 6 from the outside in the left-right direction L1 through an opening of a slit hole (see FIG. 1) 6 described later formed in the connection piece 4. It is fixed to the connecting piece 4 via the tool 5.

As shown in FIGS. 1 to 3, the connecting piece 4 is, for example, a Z-shaped plate piece fixed to the four corners of the equipment device W and protrudes outward from the side surface of the equipment device W in the left-right direction L1. The slit hole 6 is formed in the flange portion 4a. The slit hole 6 is open on the edge side of the flange portion 4a, and as described above, the second suspension bolt 3B can be slid into the slit hole 6 from the outside in the left-right direction L1. Has been.
Note that a flange portion 4b is formed at the edge portion of the flange portion 4a by bending downward along the entire length thereof.

  By the way, in the vibration proof suspension vibration reduction structure 1 of this embodiment, as shown in FIG. 2, the lower end part of the 1st suspension bolt 3A and the upper end part of the 2nd suspension bolt 3B are the up-down direction which is a bolt axis O direction. And a vibration reduction connecting unit 10 (a vibration reducer) that reduces the vibration load acting on the entire suspension bolt 3 by consuming the vibration energy of the vibration input along with the relative movement. I have.

As shown in FIGS. 2 and 4, the vibration reduction connecting unit 10 includes a top wall plate 11 and a bottom wall plate 12 that are disposed facing each other with an interval in the vertical direction, and the top wall plate 11 and the bottom wall. A connecting frame 15 having a connecting piece 13 for connecting the wall plate 12 is provided.
The connecting piece 13 is a U-shaped member extending in the vertical direction in a cross-sectional view, and integrally connects the top wall plate 11 and the bottom wall plate 12. An insertion hole 11a is formed in a substantially central portion of the top wall plate 11, and the first suspension bolt 3A is inserted through the insertion hole 11a. On the other hand, an insertion hole 12a is also formed in a substantially central portion of the bottom wall plate 12, and the second suspension bolt 3B is inserted through the insertion hole 12a.

  A high damping washer 17 is interposed between the head portion of the second suspension bolt 3 </ b> B and the bottom wall plate 12. The high damping washer 17 is a member having a high damping characteristic formed in an annular shape from a material having both elasticity and damping (for example, a material having a hardness of 40 degrees and a tan δ of 0.5 or more).

A movable plate 16 is disposed between the top wall plate 11 and the bottom wall plate 12 and is movable in the vertical direction while being guided by the connecting piece 13. An insertion hole 16a is formed at a substantially central portion of the movable plate 16, and the first suspension bolt 3A inserted through the top wall plate 11 is further inserted through the insertion hole 16a.
The first suspension bolt 3A is screwed with nuts 18 on a portion located above the top wall plate 11 and a portion located below the movable plate 16, respectively. A vertical distance H (see FIG. 2) between the top wall plate 11 and the movable plate 16 is adjusted. Note that a disc spring 19 disposed so as not to be separated from the top wall plate 11 is interposed between the top wall plate 11 and the nut 18.

Further, between the top wall plate 11 and the movable plate 16, a coil spring 20 externally inserted into the first suspension bolt 3 </ b> A is interposed in a compressed state. As a result, the top wall plate 11 and the movable plate 16 are constantly urged in directions away from each other by receiving the elastic force of the coil spring 20.
However, since the interval H is adjusted by the two nuts 18 described above, the ceiling wall plate 11 and the movable plate 16 are not separated by more than the interval H. On the other hand, when an external force exceeding the elastic force of the coil spring 20 is applied to the connecting frame 15, for example, the connecting frame 15 can be moved downward so that the movable plate 16 and the top wall plate 11 approach each other. In this case, the connecting frame 15 moves in the reverse direction (upward) by the elastic restoring force of the coil spring 20 after the movement.
Thus, the connection frame body 15, the movable plate 16, the coil spring 20, and the like connect the first suspension bolt 3A and the second suspension bolt 3B so as to be movable relative to each other in the vertical direction.

Furthermore, between the top wall plate 11 and the movable plate 16, a damping tube 21 that is externally inserted into the first suspension bolt 3 </ b> A and is located on the radially inner side of the coil spring 20 is interposed in a compressed state. The attenuation tube 21 is formed in an annular shape from a material having both elasticity and attenuation (for example, a material having a hardness of 40 degrees and a tan δ of 0.5 or more), and has a high attenuation characteristic that can expand and contract in the vertical direction. It is set as the member which has. Therefore, the damping tube 21 urges the top wall plate 11 and the movable plate 16 in a direction to be separated from each other in combination with the coil spring 20.
The disc spring 19, the coil spring 20, the damping tube 21, and the like described above absorb the vibration energy of the vibration input along with the relative movement of the first suspension bolt 3A and the second suspension bolt 3B. Is fulfilling.

  Further, as shown in FIG. 2, the connector 5 includes a clip 30 that can be attached to the second suspension bolt 3 </ b> B by one touch, and the clip 30 is used to slit the connection piece 4. The second suspension bolt 3 </ b> B slidably inserted into the hole 6 can be fixed to the connecting piece 4.

As shown in FIGS. 2, 5, and 6, the clip 30 is a member obtained by dividing a long nut into two parts, and a first nut member (divided body) 31 and a first nut member 31 that are separated from each other in a radial direction are combined. A two-nut member (divided body) 32 is provided.
The first nut member 31 and the second nut member 32 are connected to each other via a hinge piece 33 so as to be rotatable, and can be combined and separated by a rotating operation. Then, by combining the first nut member 31 and the second nut member 32, the second suspension bolt 3B is surrounded from the outside in the radial direction, and the thread grooves of both the nut members 31, 32 are screwed into the second suspension bolt 3B. It becomes possible to put on.

A first engagement portion 35 is attached to the first nut member 31, and a second engagement portion 36 that is engaged with the first engagement portion 35 is attached to the second nut member 32.
The first engaging portion 35 is, for example, a cylindrical member having a C shape in a side view, and opens to the second nut member 32 side. The second engaging portion 36 is, for example, an arrow-shaped member having two protruding pieces 36a that can be elastically deformed. The protruding piece 36a enters the first engaging portion 35 while elastically deforming through the opening. Thereafter, the projecting piece 36a can be engaged with the first engaging portion 35 by being deformed and deformed inside.
The first engagement portion 35 and the second engagement portion 36 function as a lock mechanism 37 that can hold and release the combined state of the combined first nut member 31 and second nut member 32.

  As shown in FIG. 2, a high attenuation washer 38 similar to the above-described high attenuation washer 17 is interposed between the flange portion 4 a of the connecting piece 4 and the clip 30. Moreover, the collar part 4b formed in the flange part 4a protrudes below to such an extent that it covers a part of clip 30 from the outer side of the left-right direction L1, and, for example, has the function of suppressing the detachment of the clip 30.

According to the vibration-proof suspended vibration-reducing structure 1 configured as described above, when vibration is input to the equipment W from the outside due to an earthquake or the like, the vibration is transmitted to the entire vibration-proof suspended vibration-reducing structure 1. At first, the vibration energy of the vibration can be consumed using the vibration reduction connecting unit 10.
Specifically, even if the equipment device W and the suspension bolt 3 that supports the equipment device W are suspended and supported mainly by vibration, the first suspension bolt 3A and the first suspension bolt 3A The two suspension bolts 3B can be moved relative to each other in the vertical direction. Then, the vibration reduction connecting unit 10 that connects the first suspension bolt 3A and the second suspension bolt 3B so as to be relatively movable in the vertical direction may attenuate and absorb the vibration energy and consume the vibration energy with the relative movement. it can.

More specifically, when the first suspension bolt 3 </ b> A and the second suspension bolt 3 </ b> B move relative to each other in the vertical direction, the connecting frame 15 moves relatively downward (approaching direction) relative to the movable plate 16. The coil spring 20 and the damping tube 21 are compressed. After the movement, the connecting frame 15 receives the elastic restoring force of the coil spring 20 and the damping tube 21 and is returned to the original state, and thus moves upward. And since the connection frame 15 repeats this, it reciprocates to an up-down direction. At this time, the coil spring 20 and the damping tube 21 attenuate and absorb the impact force in the vertical direction. Thereby, vibration energy can be consumed.
In particular, the initial impact force at the time of vibration input can be mitigated by the coil spring 20, and vibration energy can also be consumed by damping and absorption by the two high damping washers 17 and 38 and the disc spring 19. it can.

Therefore, the vibration energy amount accumulated in the suspension bolt 3 out of the total vibration energy amount can be reduced by the consumed amount. Therefore, the vibration load acting on the suspension bolt 3 can be reduced. That is, the vibration can be reduced.
As a result, bending deformation, breakage, and the like that occur in the suspension bolt 3 can be effectively suppressed, and the equipment device W can be stably suspended and supported without being excessively shaken.

  In particular, the suspension bolt 3 is configured to be divided into a first suspension bolt 3A and a second suspension bolt 3B, and both suspension bolts 3A and 3B are coupled by the vibration reduction coupling unit 10. Therefore, for example, the suspension bolt 3 is lengthened. It is not necessary to adopt the conventional seismic isolation structure method in which vibration is absorbed by moving the equipment W greatly by such measures. Therefore, the above-described effects can be achieved without requiring a large movable space.

  Thus, according to the vibration-proof suspended vibration-reducing structure 1 according to this embodiment, the input vibration energy can be efficiently absorbed in a small space without requiring a large movable space, and the equipment W can be It can be stably supported by hanging from the ceiling.

  Furthermore, according to the vibration-proof suspension vibration reduction structure 1 according to the present embodiment, even if the first suspension bolt 3A and the second suspension bolt 3B are still connected by the vibration reduction connection unit 10, the second Since the suspension bolt 3B can be slid into the slit hole 6 and combined with the connecting piece 4, the installation work can be easily performed and the installation workability can be improved.

This point will be specifically described.
When performing the installation work, as shown in FIG. 7, the second suspension bolt 3B is slid and inserted into the slit hole 6 formed in the flange portion 4a of the connecting piece 4 from the outside in the left-right direction L1. Combine to 4. At this time, the bottom wall plate 12 of the connecting frame 15 is slid and inserted so as to be in contact with the upper surface of the flange portion 4a. Next, as shown in FIG. 2, the clip 30 is positioned directly below the flange portion 4a with the high damping washer 38 interposed therebetween, and the first nut member 31 and the second nut are rotated at that position. While combining with the member 32, the 2nd engaging part 36 is engaged with the 1st engaging part 35, and the combination of the 1st nut member 31 and the 2nd nut member 32 is locked.

As a result, the thread grooves of the first nut member 31 and the second nut member 32 can be engaged with the second suspension bolt 3B from the outside in the radial direction, and can be engaged with the thread groove of the second suspension bolt 3B. Can be fixed. Therefore, it is possible to attach the clip 30 to the second suspension bolt 3B firmly without causing looseness and with one touch. Therefore, unlike the case of using a nut, the installation work can be performed very simply. In addition, since the clip 30 is more conspicuous than the nut, it is easy to effectively prevent human errors such as forgetting to attach.
Moreover, since the coupling state of the 1st nut member 31 and the 2nd nut member 32 can be hold | maintained and cancelled | released without using a tool etc. using the locking mechanism 37, it is easy to perform installation work also in this point.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, although the equipment device W is suspended from the ceiling using the four suspension bolts 3, the number and arrangement of the suspension bolts 3 may be changed as appropriate according to the type and use of the equipment device W.
Moreover, in the said embodiment, although the 2nd suspending bolt 3B was attached to the connection piece 4 using the clip 30 by one-touch, the clip 30 is not essential, for example, the 2nd suspending bolt 3B is attached to the slit hole 6. After being inserted into the slide, it may be attached to the connecting piece 4 using a nut. However, in consideration of installation workability, it is preferable to use the clip 30.

F ... Ceiling frame W ... Equipment 1 ... Anti-vibration suspended vibration reduction structure 2 ... Insert (fixture)
DESCRIPTION OF SYMBOLS 3 ... Suspension bolt 3A ... 1st suspension bolt 3B ... 2nd suspension bolt 4 ... Connection piece 5 ... Connection tool 6 ... Slit hole 10 ... Vibration reduction connection unit 30 ... Clip 31 ... 1st nut member (partition body)
32 ... Second nut member (divided body)
37 ... Lock mechanism

Claims (3)

A structure that supports the equipment on a ceiling,
A plurality of suspension bolts whose upper ends are screwed to a fixture provided on the ceiling frame;
Each provided at the lower end of the plurality of suspension bolts, and connected to a connecting piece fixed to the equipment, and
The suspension bolt is
A first suspension bolt disposed on the ceiling housing side and having an upper end screwed to the fixture;
A second suspension which is disposed on the equipment side and is slidably inserted into the slit hole through the opening of the slit hole formed in the connection piece, and is fixed to the connection piece via the connection tool. A bolt, and
The lower end portion of the first suspension bolt and the upper end portion of the second suspension bolt are connected so as to be relatively movable in the bolt axial direction of the suspension bolt, and vibration energy of vibration input along with the relative movement is coupled. An anti-vibration suspension vibration reduction structure comprising a vibration reduction connecting unit that consumes and reduces a vibration load acting on the suspension bolt. In the vibration-proof suspended vibration-reducing structure according to claim 1,
The connector is
An anti-vibration suspension comprising a clip having a plurality of divided bodies that are separable from each other and that can be engaged with the second suspension bolt from the outside in the radial direction. Seismic reduction structure. In the vibration-proof suspended vibration-damping structure according to claim 2,
The plurality of divided bodies are rotatably coupled and can be combined with each other by a rotation operation.
The clip is provided with a lock mechanism capable of holding and releasing a combined state of the plurality of divided bodies combined.

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