JP6379005B2 - Vibration control device - Google Patents

Description

  The present invention relates to a vibration control device.

  A vibration control device attached to a building is disclosed in, for example, Japanese Patent Application Laid-Open No. 2009-293658. The vibration control device of the publication includes a vibration control unit and a transmission mechanism that transmits shear deformation generated in the building to the vibration control unit. The transmission mechanism includes an upper transmission member attached to an upper horizontal shaft member (for example, a ceiling beam) of a building and a lower transmission member attached to a lower horizontal shaft member (for example, a base) of the building. A flange portion is provided at the upper end of the lower transmission member. In the flange portion, through holes for inserting bolts are formed at four corners, respectively, and are connected to a flange portion provided at the lower end of the vibration control unit by a bolt nut.

JP 2009-293658 A

  However, the vibration damping device having the above-described configuration has a drawback that the workability of product assembly is poor because there are many joints by bolts and nuts. In addition, there is a case where rattling occurs due to loosening due to the sliding of the bolt, and shear deformation generated in the building cannot be appropriately applied to the vibration control unit.

  The vibration control device proposed here includes an intermediate plate, a pair of viscoelastic bodies, a pair of outer plates, a first transmission member, a second transmission member, and a fastening member. The pair of viscoelastic bodies are opposed to each other with the intermediate plate interposed therebetween, and are bonded to the intermediate plate. The intermediate plate extends in one direction from the portion where the viscoelastic body is bonded. The pair of outer plates are orthogonal to the bonding portion bonded to the outside of the pair of viscoelastic bodies facing each other across the intermediate plate and the direction in which the intermediate plate extends from the portion bonded to the pair of viscoelastic bodies. A pair of facing portions that extend along the direction and protrude from both sides of the intermediate plate and the viscoelastic body and face each other. The first transmission member includes a substrate plate, an attachment piece, an intermediate member, and a first attachment surface. The substrate plate is disposed on the opposite side to the direction in which the intermediate plate extends from the portion bonded to the pair of viscoelastic bodies with respect to the outer plate. The mounting piece includes a base end portion welded to the substrate plate, and a connecting portion extending from the substrate plate and connected to a pair of opposing portions disposed on both sides of the outer plate by a fastening member. The intermediate member is welded to the substrate plate, and extends from the substrate plate toward the side opposite to the side on which the attachment piece is provided. The first mounting surface is provided at the tip of the intermediate member toward the side opposite to the direction in which the intermediate plate extends from the portion bonded to the pair of viscoelastic bodies. The second transmission member includes a base and a second attachment surface. The base is welded to the tip of an intermediate plate extending from a portion bonded to the pair of viscoelastic bodies and faces the substrate plate of the first transmission member. The second mounting surface is provided on the base toward the side opposite to the first mounting surface.

  According to such a vibration control device, all parts other than the outer plate and the first transmission member mounting piece being connected by the fastening member are welded, so that the work of assembling the vibration control device is simplified and assembled. Improved workability. Moreover, the connection location by a fastening member is reduced compared with the past, and the backlash by the sliding of a fastening member reduces. For this reason, when a 1st attachment surface and a 2nd attachment surface carry out relative displacement in a horizontal direction at the time of an earthquake, a shear deformation can be appropriately given to a viscoelastic body. As a result, the vibration control device can more appropriately perform the damping function.

  The substrate plate of the first transmission member is a pair of a base plate portion to which the base end portion of the mounting piece is welded, and a pair of sides bent on the opposite side of the surface of the base plate portion opposite to the surface to which the base end portion is welded. The side plate portion may be provided. In this case, the intermediate member may be sandwiched between the pair of side plate portions and welded to the side plate portion. In this way, the substrate plate to which the base end portion of the mounting piece is welded and the side plate portion to which the intermediate member is welded are formed by bending a single flat plate, thereby making it possible to produce a substrate plate without using welding. , Processing costs can be kept low.

  The intermediate member may be a prismatic material having a rectangular cross section. In this case, the pair of side plate portions and the intermediate member may be welded along the corners of the side peripheral surface of the intermediate member. According to this configuration, the pair of side plate portions and the intermediate member can be firmly joined.

  Furthermore, the site | part which the side surface of an intermediate member and the edge of a pair of side plate part overlap may be welded along the edge of a pair of side plate part. If it does in this way, there will also be many welding locations and the joint strength of the said part can be made still stronger.

  Moreover, the surface on the opposite side to the surface to which the base end part of a board | substrate part is welded, and the edge of the front-end | tip of an intermediate member may contact | abut. In this case, a portion where the surface opposite to the surface to which the base end portion of the substrate portion is welded and the edge of the tip of the intermediate member may be welded along the edge of the tip of the intermediate member. Thereby, the joining strength between the intermediate member and the substrate plate can be sufficiently increased.

  The 1st transmission member may be provided with the sleeve which penetrated the connection part of the attachment piece. In this case, the sleeve may be mounted in the gap between the opposed portions of the pair of outer plates. Moreover, the intermediate part of the said sleeve which penetrated the connection part of the attachment piece may be welded to the attachment piece. And the said sleeve and the opposing part of a pair of outer side plate may be connected by the fastening member. If it does in this way, in the structure which connects a 1st transmission member and a pair of outer side plate, required intensity | strength can fully be ensured. In addition, the distance between the pair of outer plates is appropriately maintained, and shear deformation can be appropriately generated in the viscoelastic body with respect to the relative displacement of the intermediate plate with respect to the pair of outer plates.

FIG. 1 is a front view showing a wall structure of a building 200 to which a vibration control device 100 is attached. FIG. 2 is a front view showing the vibration control device 100. FIG. 3 is an enlarged view of the vibration control unit 10. 4 is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a side view of the vibration control unit 10. FIG. 6 is a plan view of the vibration control unit 10. FIG. 7 is a schematic diagram of a hysteresis loop drawn by the vibration control unit 10. FIG. 8 is a top view of the first transmission member 40. FIG. 9 is a front view of the first transmission member 40. FIG. 10 is a side view of the first transmission member 40. FIG. 11 is a development view of the first transmission member 40. FIG. 12 is a side view showing a state in which the sleeve 300 constituting the bosses 47 c and 48 c is assembled to the attachment pieces 47 and 48 of the first transmission member 40. FIG. 13 is a side view showing the assembly of the opposing plates 12, 13, 14 and viscoelastic bodies 15, 16. 14 is a sectional view taken along the line XIV-XIV in FIG. FIG. 15 is a diagram showing the left base 43. FIG. 16 is a top view of the second transmission member 30. FIGS. 17A and 17B are diagrams illustrating a state in which the ceiling beam 50 and the base 60 are relatively displaced in the horizontal direction in the building 200 to which the vibration control device 100 is attached.

  Hereinafter, a vibration control device according to an embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment. Moreover, the same code | symbol is attached | subjected suitably to the member or site | part which has the same effect | action. Each drawing is schematically drawn and does not necessarily reflect the real thing. Each drawing shows only an example and does not limit the present invention unless otherwise specified.

  Here, an example of the overall configuration of the vibration control device proposed here and the structure of the building 200 to which the vibration control device is attached will be described, and a characteristic configuration of the vibration control device proposed here will be mentioned.

<Building 200>
FIG. 1 is a front view showing a wall structure of a building 200 to which a vibration control device 100 is attached. Here, the building 200 includes a pair of horizontal shaft members (for example, a beam 50 (upper frame 50a) and a base 60 (lower frame 60a)) opposed to each other and a pair of vertical shafts respectively connected to the pair of horizontal shaft members. A rectangular frame 204 surrounded by a shaft member (for example, columns 70a and 70b) is provided. The vibration control device 100 is arranged in such a rectangular frame 204. Such a building 200 can be exemplified by a wooden house built by a frame construction method such as a wooden frame construction method and a frame wall construction method (also referred to as a two-by-four construction method).

<Rectangular framework 204>
For example, in the so-called wooden frame construction method, a rectangular frame surrounded by a base, a pair of columns, and a beam is constructed. In the so-called frame wall construction method, for example, a wooden frame is made of wood having a cross section of 2 inches × 4 inches or an integral multiple thereof, and a wall is assembled by fastening plywood or the like on the wood frame. The frame wall construction method sometimes uses wood with a cross section of 2 × 6, 2 × 10, 4 × 4, 2 × 8, etc., and is necessarily limited to wood with a cross section of 2 inches × 4 inches or an integral multiple thereof. Is not to be done. The vibration control device proposed here can be attached to both the wooden shaft construction method and the frame wall construction method. In this case, a building built by such a framed wall construction method can be attached to a wooden frame for constructing a wall. For example, the vibration control device 100 is attached to a rectangular frame surrounded by a frame corresponding to a pair of vertical shaft members (columns), an upper frame corresponding to a pair of horizontal shaft members, and a lower frame.

  In the example shown in FIG. 1, the vibration control device 100 includes a rectangular frame surrounded by an upper frame 50 a attached to the beam 50 of the building 200, a lower frame 60 a attached to the base 60, and pillars 70 a and 70 b. 204. Here, the beam 50, the base 60, and the columns 70a and 70b are structural materials of the building 200, respectively. The beam 50 and the base 60 are beams that face each other vertically.

  In this embodiment, the vibration control device 100 is attached to the first floor of the building 200. On the first floor of the building 200, on the concrete foundation 202, a base 60, a foundation packing 107, and a lower frame 60a are attached in order. The base 60, the foundation packing 107, and the lower frame 60 a have insertion holes through which the anchor bolts 105 embedded in the concrete foundation 202 are inserted, and are attached to the anchor bolts 105. Here, the thickness of the foundation packing 107 is about 20 mm, and is attached to ensure ventilation in the concrete foundation 202. Further, the beam 50 is a ceiling beam (also called a second-floor floor beam in a two-story house), and is hereinafter referred to as “ceiling beam 50” as appropriate. Here, an upper frame 50 a is attached to the lower surface of the beam 50. The columns 70 a and 70 b are attached between a lower frame 60 a attached to the base 60 and an upper frame 50 a attached to the beam 50. Here, the pillars 70a and 70b, the lower frame 60a, and the upper frame 50a are about 90 mm (for example, 89 mm). The thickness of the foundation packing 107 and the dimensions of the columns 70a and 70b, the lower frame 60a, and the upper frame 50a are not particularly limited to the above. In the illustrated example, the foundation packing 107 is provided, but the foundation packing 107 may be omitted.

  Here, the vibration control device 100 includes the base 60 (lower frame 60a), the ceiling beam 50 (upper frame 50a), and the pillars 70a and 70b on the first floor of the building 200 that rises from the base 60 and supports the ceiling beam 50. Are attached to a rectangular frame 204 surrounded by.

<< Seismic control device 100 >>
Next, the vibration control device 100 will be described. FIG. 2 is a front view showing the vibration control device 100. FIG. 3 is an enlarged view of the vibration control unit 10. 4 is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a side view of the vibration control unit 10. FIG. 6 is a plan view of the vibration control unit 10. FIG. 7 is a schematic diagram of a hysteresis loop drawn by the vibration control unit 10. As shown in FIGS. 2 to 5, the vibration control device 100 includes plates 12, 13, 14, viscoelastic bodies 15, 16, a first transmission member 40, and a second transmission member 30. Yes.

<< Control unit 10 >>
Here, the opposing plates 12, 13, 14 and the viscoelastic bodies 15, 16 constitute a vibration control unit 10 that can exhibit a vibration control function in the vibration control device 100.

<Plate 12, 13, 14>
Opposing plates 12, 13, and 14 are steel plates each having a required rigidity. As shown in FIGS. 3 to 5, the opposing plates 12, 13, and 14 are disposed so that the plate 12 and the plate 13 sandwich the plate 14 and face the plate 14, respectively. Here, among the plates 12, 13, and 14, the intermediate plate 14 disposed in the middle is appropriately referred to as an intermediate plate. In addition, the pair of outer plates 12 and 13 disposed outside the intermediate plate 14 are appropriately referred to as outer plates. The pair of outer plates 12 and 13 are substantially rectangular steel plates having the same shape. In this embodiment, the pair of outer plates 12 and 13 are arranged in parallel with their orientations aligned. The intermediate plate 14 is rectangular. One side in the longitudinal direction of the intermediate plate 14 is disposed between the pair of outer plates 12 and 13. The opposite side of the intermediate plate 14 is disposed so as to protrude from the pair of outer plates 12 and 13.

  That is, one side in the longitudinal direction of the intermediate plate 14 is interposed with respect to a region where the pair of outer plates 12 and 13 face each other. The side opposite to the longitudinal direction of the intermediate plate 14 protrudes from the region. Further, the pair of outer plates 12 and 13 protrude from the region where the intermediate plate 14 overlaps, except for one side in the longitudinal direction. As shown in FIGS. 4 and 5, the insertion holes 22 (see FIG. 3 and FIG. 4) for inserting bolts 49a (see FIGS. 3 and 4) into the portions 12b and 13b that protrude from the region where the intermediate plate 14 overlaps and face each other. 6) is formed.

<Viscoelastic bodies 15, 16>
The pair of viscoelastic bodies 15 and 16 are opposed to each other with the intermediate plate 14 interposed therebetween, and are bonded to the intermediate plate 14 respectively. In this embodiment, the viscoelastic bodies 15 and 16 are disposed between the opposing plates 12, 13, and 14 and bonded to the plates 12, 13, and 14, respectively. The viscoelastic bodies 15 and 16 are each formed into a rectangular flat plate shape. The viscoelastic bodies 15 and 16 are disposed in rectangular regions where the plates 12, 13, and 14 overlap each other when viewed from the normal direction of the plates 12, 13, and 14. Here, the viscoelastic body 15 is disposed between the outer plate 12 and the intermediate plate 14 and bonded thereto. The viscoelastic body 16 is disposed between the outer plate 13 and the intermediate plate 14 and bonded thereto. The viscoelastic bodies 15 and 16 are made of, for example, viscoelastic rubber (damping rubber) having high damping properties. The viscoelastic bodies 15 and 16 and the plates 12, 13 and 14 are bonded by vulcanization adhesion. Here, as shown in FIGS. 4, 5, and 6, the intermediate plate 14 extends in one direction (here, upward) from a portion where the viscoelastic bodies 15 and 16 are bonded. Further, the pair of outer plates 12 and 13 are opposed to each other on both sides of the intermediate plate 14 with the viscoelastic bodies 15 and 16 therebetween. With respect to the pair of outer plates 12 and 13, portions bonded to the viscoelastic bodies 15 and 16 are referred to as bonding portions 12a and 13a. The portions that protrude from the intermediate plate 14 and the viscoelastic bodies 15 and 16 and face each other are referred to as facing portions 12b and 13b. The facing portions 12b and 13b extend along a direction orthogonal to the direction in which the intermediate plate 14 extends from the portion bonded to the viscoelastic bodies 15 and 16 (here, the left-right direction). It protrudes from the bodies 15 and 16 on both sides.

  The viscoelastic rubber (damping rubber) used as the viscoelastic bodies 15 and 16 includes, for example, natural rubber, styrene butadiene rubber (SBR), nitrile butadiene rubber (NBR), butadiene rubber material ( BR), isoprene rubber (IR), butyl rubber (IIR), halogenated butyl rubber (X-IIR), and chloroprene rubber (CR) rubber materials are added to produce high damping properties. A rubber composition can be used. Various additives such as carbon black are known as additives exhibiting high attenuation.

<Hysteresis loop H>
Here, FIG. 6 illustrates a state in which the intermediate plate 14 is translated with respect to the pair of outer plates 12 and 13. As shown in FIG. 6, in the vibration control unit 10, when the intermediate plate 14 moves in parallel with respect to the pair of outer plates 12 and 13, shear deformation occurs in the viscoelastic bodies 15 and 16. At this time, a hysteresis loop H (measured hysteresis curve) as shown in FIG. 7 is drawn from the relationship between the shear displacement generated in the viscoelastic bodies 15 and 16 and the shear load. In FIG. 7, the horizontal axis indicates the displacement in the shear direction, and the vertical axis indicates the shear load at that time. According to the hysteresis loop H, it can be seen that the shear load increases as the shear displacement increases, and the resistance force of the viscoelastic bodies 15 and 16 increases. When the viscoelastic bodies 15 and 16 receive vibration accompanied by shear deformation, the viscoelastic bodies 15 and 16 can absorb an amount of energy corresponding to the area surrounded by the hysteresis loop H every cycle.

<< First Transmission Member 40, Second Transmission Member 30 >>
In this embodiment, the vibration control unit 10 is attached to the building 200 via the first transmission member 40 and the second transmission member 30. The first transmission member 40 and the second transmission member 30 are attached to the upper frame 50 a and the lower frame 60 a of the building 200, and transmit the shear displacement generated in the building 200 to the vibration control unit 10. Hereinafter, the first transmission member 40 and the second transmission member 30 will be described.

<< First transmission member 40 >>
As shown in FIGS. 2 to 5, the first transmission member 40 is a member connected to the pair of outer plates 12, 13 among the opposed plates 12, 13, 14. In this embodiment, the first transmission member 40 includes a substrate plate 46, mounting pieces 47 and 48, intermediate members 41 and 42, base portions 43 and 44, and first mounting surfaces 43d and 44d. FIG. 8 is a top view of the first transmission member 40. FIG. 9 is an enlarged front view of the main part of the first transmission member 40. FIG. 10 is a side view of the first transmission member 40.

<Substrate plate 46>
As shown in FIGS. 2 to 5, in the substrate plate 46, the direction in which the intermediate plate 14 extends from the part bonded to the pair of viscoelastic bodies 15, 16 with respect to the outer plates 12, 13 (upward here). It is arranged on the opposite side. In this embodiment, as shown in FIGS. 8 to 10, the substrate plate 46 is a substantially rectangular plate-like member, leaving an intermediate portion in the width direction of the substantially rectangular plate-like member with a predetermined width, It is a member in which both sides in the width direction are bent in the same direction. The substrate plate 46 includes a substrate portion 46a and side plate portions 46b and 46c. Here, the substrate portion 46 a is configured in an intermediate portion in the width direction of the substrate plate 46. In addition, the side plate portions 46b and 46c are configured in portions where both sides in the width direction of the substrate plate 46 are bent in the same direction. The board portion 46a is a portion to which the mounting pieces 47 and 48 are welded, and is disposed so as to face the end portions 41a and 42a of the intermediate members 41 and 42. As described above, the side plate portions 46b and 46c are portions that are bent to the opposite side of the surface to which the attachment pieces 47 and 48 are welded at both side edges of the substrate portion 46a. It is provided on both sides of the substrate portion 46a so as to sandwich the end portions 41a and 42a. The end portions 41a and 42a of the intermediate members 41 and 42 are welded to the side plate portions 46b and 46c, respectively.

  For example, the substrate plate 46 is punched from a single steel plate into a predetermined shape as shown in FIG. 11, and the side plate portions 46b and 46c on both sides are opposite to the surfaces to which the mounting pieces 47 and 48 of the substrate portion 46a are welded. It is good to bend to the side. Here, broken lines b1 and b2 in FIG. 11 indicate fold lines at which the side plate portions 46b and 46c are bent, respectively. Here, the substrate plate 46 punched out from one steel plate is bent along the folding lines b1 and b2, and the two side plate portions 46b and 46c are set along the intermediate members 41 and 42. And it is good to weld the part which the side-plate parts 46b and 46c and the intermediate members 41 and 42 overlap.

<Mounting pieces 47, 48>
The attachment pieces 47 and 48 are rectangular plate materials shorter than the substrate plate 46 and are provided on the substrate plate 46. The mounting pieces 47 and 48 include base end portions 47a and 48a and connecting portions 47b and 48b. The base end portions 47 a and 48 a are portions welded to the substrate plate 46. The arrow P4 is attached | subjected to the said welding location in FIG. 9 and FIG.

  The connecting portions 47b and 48b are portions that extend from the substrate plate 46 and are respectively connected to a pair of opposing portions 12b and 13b disposed on both sides of the outer plates 12 and 13 by fastening members 49a and 49b. The intermediate portion is provided with a required interval. In this embodiment, the connecting portions 47b and 48b are arranged so that the short sides of the connecting portions 47b and 48b are aligned with the length direction of the substrate plate 46 at the center in the width direction of the substrate plate 46, and are orthogonal to the substrate plate 46. And it is provided so as to protrude from the substrate plate 46. The distance between the connecting portions 47b and 48b is sufficient to accommodate the intermediate plate 14 and the viscoelastic bodies 15 and 16 of the vibration control unit 10, and is attached to both side portions in the length direction of the pair of outer plates 12 and 13, respectively. Is set to be. The pair of outer plates 12 and 13 are attached to the connecting portions 47b and 48b, and bosses 47c and 48c through which the bolts 49a are inserted are provided at portions where the pair of outer plates 12 and 13 are attached. In this embodiment, the bosses 47 c and 48 c are constituted by the sleeve 300.

<Sleeve 300>
Here, FIG. 12 is a side view showing a state in which the sleeve 300 constituting the bosses 47c, 48c is assembled to the attachment pieces 47, 48 of the first transmission member 40, and is partially broken. FIG. 14 is a side view showing an assembly of opposing plates 12, 13, 14 and viscoelastic bodies 15, 16.

  In the proposed vibration damping device 100, as shown in FIG. 6, the pair of outer plates 12 and 13 are opposed to each other on both sides of the intermediate plate 14 with the viscoelastic bodies 15 and 16 therebetween. The pair of outer plates 12 and 13 includes adhesion portions 12a and 13a adhered to the viscoelastic bodies 15 and 16, and opposed portions 12b and 13b that protrude from the intermediate plate 14 and the viscoelastic bodies 15 and 16 and face each other. ing. The bosses 47c and 48c are constituted by a sleeve 300 penetrating the mounting pieces 47 and 48, as shown in FIG.

  As shown in FIG. 13, the sleeve 300 is mounted in the gap S <b> 1 between the facing portions 12 b and 13 b of the pair of outer plates 12 and 13. Here, the length L1 (see FIG. 12) of the sleeve 300 formed by the bosses 47c and 48c is approximately the same as the distance L2 (see FIG. 14) between the pair of outer plates 12 and 13. In other words, the sleeve 300 has a length that can fit in the gap S1 between the pair of outer plates 12 and 13. In other words, the sleeve 300 has a length that corresponds to the sum of the thickness of the intermediate plate 14 and the thickness of the pair of viscoelastic bodies 15 and 16.

  On the other hand, through holes 310 for inserting the sleeve 300 are formed in the attachment pieces 47 and 48 of the first transmission member 40. The through hole 310 may be formed with a hole that is approximately the same as or slightly larger than the outer diameter of the sleeve 300. The sleeve 300 passes through the attachment pieces 47 and 48 through the through hole 310.

  In this embodiment, the thicknesses of the viscoelastic bodies 15 and 16 bonded to both sides of the intermediate plate 14 are the same. On the other hand, the middle position in the middle of the length direction of the sleeve 300 is aligned with the through hole 310 of the attachment pieces 47 and 48. As a result, the sleeves 300 protruding from the attachment pieces 47 and 48 have the same length on both sides of the attachment pieces 47 and 48. Therefore, when the bosses 47c and 48c of the attachment pieces 47 and 48 are housed in the facing portions 12b and 13b of the pair of outer plates 12 and 13, the intermediate plate 14 and the attachment pieces 47 and 48 are connected to each other. , 13 is located at the middle position. When the intermediate plate 14 is displaced with respect to the pair of outer plates 12 and 13 with the shear deformation of the viscoelastic bodies 15 and 16, the intermediate plate 14 is disposed so as to contact the mounting pieces 47 and 48.

  In this manner, the sleeve 300 and the mounting pieces 47 and 48 are welded in a state where the sleeve 300 is assembled to the mounting pieces 47 and 48. The welding between the sleeve 300 and the mounting pieces 47 and 48 is, for example, fillet welding. Also, the outer peripheral surface of the sleeve 300 and the edge of the through hole 310 of the attachment pieces 47 and 48 may be welded over the entire circumference of the through hole 310 of the attachment pieces 47 and 48. As a result, the required joining strength is ensured between the sleeve 300 and the mounting pieces 47 and 48.

  In this embodiment, as shown in FIGS. 3 and 6, opposed portions 12 b and 13 b are provided on both sides of the adhesive portions 12 a and 13 a of the pair of outer plates 12 and 13, respectively. The sleeves 300 (bosses 47c and 48c) attached to the attachment pieces 47 and 48 of the first transmission member 40 have a pair of outer plates 12 at opposing portions 12b and 13b provided on both sides of the adhesive portions 12a and 13a. , 13 respectively. In this embodiment, the first transmission member 40 includes a substrate plate 46 that integrally supports mounting pieces 47 and 48 accommodated in the facing portions 12b and 13b, respectively. In this embodiment, the mounting pieces 47 and 48 and the substrate plate 46 are welded, and the required rigidity is ensured.

  And the said sleeve 300 (boss | hub 47c, 48c) and the opposing parts 12b and 13b of a pair of outer side plates 12 and 13 are connected by the connection member (49a, 49b). Here, the connecting members (49a, 49b) include a shaft member 49a passed through the sleeve 300 (bosses 47c, 48c) and a locking member 49b that connects the shaft member 49a to the facing portions 12b, 13b. . Specifically, in this embodiment, the shaft member 49a is a bolt shaft of the bolt 49a, and the locking member 49b is a nut 49b that holds the bolt.

<Intermediate members 41 and 42>
The intermediate members 41 and 42 are members that are welded to the substrate plate 46 and extend from the substrate plate 46 toward the side opposite to the side on which the mounting pieces 47 and 48 are provided. In this embodiment, the intermediate members 41 and 42 are two braces 41 and 42. The two braces 41 and 42 extend from the portion connected to the substrate plate 46 so that the distance between them gradually increases. The two braces 41 and 42 are welded to the side plate portions 46 b and 46 c of the substrate plate 46.

  Here, FIG. 9, FIG. 10 and FIG. 14 show the attachment structure of the two braces 41, 42 and the pair of side plate portions 46b, 46c. 14 is a sectional view taken along the line XIV-XIV in FIG. As shown in FIG. 14, the two braces 41 and 42 are prismatic materials having a rectangular cross section. The two braces 41 and 42 are sandwiched between a pair of side plate portions 46 b and 46 c of the substrate plate 46. At this time, as shown in FIGS. 9, 10, and 14, a pair of side surfaces 41 c, 42 c facing each other in the cross section among the two braces 41, 42 made of a rectangular prismatic material are a pair of substrate plates 46. The side plate portions 46b and 46c are in contact with each other. The two braces 41, 42 and the pair of side plate portions 46b, 46c are welded along the corners of the side peripheral surfaces of the two braces 41, 42. An arrow P <b> 1 is attached to the welding location in FIGS. 9, 10, and 14.

  Further, in this embodiment, as shown in FIGS. 9 and 10, the portions where the side surfaces 41c, 42c of the two braces 41, 42 overlap with the edges 46b1, 46c1 of the pair of side plate portions 46b, 46c are a pair. The side plate portions 46b and 46c are welded along the edges 46b1 and 46c1. An arrow P2 is attached to the welding location in FIGS.

  Furthermore, in this embodiment, the surface 46a1 opposite to the surface to which the mounting pieces 47 and 48 of the board portion 46a are welded, and the edges 41d and 42d of the tips 41a and 42a of the two braces 41 and 42, Each is in contact. And there are two portions where the surface 46a1 opposite to the surface to which the mounting pieces 47 and 48 of the board portion 46a are welded and the edges 41d and 42d of the tips 41a and 42a of the two braces 41 and 42 overlap. The braces 41 and 42 are welded along the edges 41d and 42d of the tips 41a and 42a. An arrow P3 is attached to the welding location in FIG. As described above, the substrate plate 46 and the two braces 41 and 42 are joined at the three welding points P1, P2, and P3.

  As shown in FIG. 1, a bridge 45 extending between the braces 41 and 42 is attached to the middle of the braces 41 and 42 in the longitudinal direction. As a result, the two braces 41 and 42 are maintained at a predetermined rigidity with a required rigidity. In the illustrated example, the number of the bridges 45 is one, but a plurality of bridges 45 may be provided between the braces 41 and 42. And the base parts 43 and 44 are provided in the edge part on the opposite side. The base parts 43 and 44 are parts attached to a rectangular frame 204 (in this embodiment, the lower frame 60a). In this embodiment, the left and right braces 41 and 42 are provided with base portions 43 and 44, respectively.

<Bases 43 and 44 and first mounting surfaces 43d and 44d>
FIG. 15 illustrates the left base 43. The right base 44 has a similar structure. As shown in FIG. 15, the base portions 43 and 44 include base portions 43a and 44a and flange portions 43b and 44b. The base parts 43a and 44a are parts that are attached along the lower frame 60a. The base portions 43a and 44a have first attachment surfaces 43d and 44d attached along the lower frame 60a.

  The first mounting surfaces 43d and 44d have a direction (here, an upward direction) in which the intermediate plate 14 extends from a portion bonded to the pair of viscoelastic bodies 15 and 16 (see FIG. 2) at the tips of the braces 41 and 42. Is provided on the opposite side. The first attachment surfaces 43d and 44d of the base 43 are attached to the upper surface of the lower frame 60a with the length direction aligned with the length direction of the lower frame 60a. Insertion holes 43a1, 43a2, and 43a3 for attachment to the lower frame 60a are formed in the first attachment surfaces 43d and 44d.

  The flange portions 43b and 44b rise from the base portions 43a and 44a. Although only one side of the base portion 43a is shown in FIG. 15, in this embodiment, the flange portions 43b and 44b are disposed on both sides of the base portion 43a so as to sandwich the end portions 41b and 42b of the braces 41 and 42, respectively. Is provided. The end portions 41b and 42b of the braces 41 and 42 are welded to the flange portions 43b and 44b, respectively.

  As shown in FIG. 1, the base portions 43 a and 44 a are attached to anchor bolts 105 embedded in the concrete foundation 202. For this reason, as shown in FIG. 15, the base portion 43a is provided with an insertion hole 43a1 through which the anchor bolt 105 is inserted. A reinforcing plate 43c that reinforces the base portion 43a is attached around the insertion hole 43a1. The base portion 43a is provided with insertion holes 43a2 and 43a3 for inserting fasteners (for example, bolts (the lag screw bolts 106 in the example shown in FIG. 1)) for fastening with the lower frame 60a. It has been. In the illustrated example, the reinforcing plate 43c is attached to the base portion 43a. However, for example, when the required strength is secured to the base portion 43a, the reinforcing plate 43c may not be attached.

<Attachment of the first transmission member 40 and the lower frame 60a>
Here, when the first transmission member 40 is attached to the lower frame 60a, the base attached to the lower ends of the braces 41 and 42 as described above in the rectangular frame 204 of the building 200 as shown in FIG. First mounting surfaces 43d and 44d of 43 and 44 are arranged along the lower frame 60a. Then, fasteners (for example, anchor bolts 105, bolts (lag screw bolts 106) and screws) are attached to the insertion holes 43a1, 43a2, 43a3 provided in the first attachment surfaces 43d, 44d, and the base portions 43, 44 are attached. It is good to fix on the lower frame 60a. As a result, the first transmission member 40 is installed in a state of standing in the rectangular frame 204.

<Attachment of the first transmission member 40 and the outer plates 12, 13>
When the first transmission member 40 is attached to the outer plates 12 and 13, the pair of outer plates 12 and 13 are attached to the attachment pieces 47 and 48 of the first transmission member 40 as shown in FIGS. 2 to 5. Here, the bosses 47 c and 48 c (sleeve 300) are accommodated in the gap between the mounting pieces 47 and 48 and the pair of outer plates 12 and 13. The bosses 47c and 48c of the mounting pieces 47 and 48 are provided with insertion holes 47d and 48d, respectively. Then, the mounting pieces 47, 48 and the pair of outer plates 12, 13 are aligned with the positions of the insertion holes 22, 47d, 48d (see FIGS. 5 and 6), the bolts 49a are inserted, and the nuts 49b are fastened. To do. In this way, the first transmission member 40 can be attached to the pair of outer plates 12 and 13 and the lower frame 60a.

  In this embodiment, the intermediate plate 14 and the viscoelastic bodies 15 and 16 of the vibration control unit 10 are disposed between the attachment pieces 47 and 48 of the first transmission member 40. The pair of outer plates 12 and 13 are attached to the attachment pieces 47 and 48 of the first transmission member 40. The distance between the mounting pieces 47 and 48 of the first transmission member 40 is such that the intermediate plate 14 and the viscoelastic bodies 15 and 16 are sufficiently accommodated in consideration of the deformation amount of the viscoelastic bodies 15 and 16. Further, bosses 47 c and 48 c (sleeve 300) are accommodated in a gap between the mounting pieces 47 and 48 and the pair of outer plates 12 and 13. Here, the bosses 47c and 48c keep the distance between the pair of outer plates 12 and 13 appropriately. Further, when the excessively large deformation is input to the viscoelastic bodies 15 and 16, the intermediate plate 14 hits the mounting pieces 47 and 48 and the bosses 47 c and 48 c. For this reason, the attachment pieces 47 and 48 and the bosses 47c and 48c can function as stoppers that restrict the viscoelastic bodies 15 and 16 from being deformed excessively.

<< Second transmission member 30 >>
The second transmission member 30 is a member connected to the intermediate plate 14 among the opposing plates 12, 13, and 14. In this embodiment, the second transmission member 30 includes a base 32 and a second attachment surface 34.

  FIG. 16 is a top view of the second transmission member 30. As shown in FIGS. 1 to 5 and 16, in this embodiment, the base 32 is a substantially rectangular plate-like member longer than the outer plates 12 and 13 of the vibration control unit 10, and is attached to the upper frame 50a. It is done. The base 32 is a member that faces the substrate plate 46 of the first transmission member 40, and is welded to the tip of the intermediate plate 14 that extends from a portion bonded to the pair of viscoelastic bodies 15 and 16. In this embodiment, the intermediate plate 14 and the base 32 are welded along the corners of the side peripheral surface of the intermediate plate 14. The welding place in FIGS. 4 and 5 is provided with an arrow P5.

  The base 32 has a second attachment surface 34 attached to the upper frame 50a. The second mounting surface 34 is provided on the base 32 toward the side opposite to the first mounting surfaces 43 d and 44 d of the first transmission member 40. As shown in FIG. 16, the second mounting surface 34 is formed with a mounting hole 34a for mounting to the upper frame 50a. In this embodiment, four (a total of eight) mounting holes 34 a are formed on both sides of the second mounting surface 34 in the length direction.

<Attachment of Second Transmission Member 30 and Upper Frame 50a>
When the second transmission member 30 is attached to the upper frame 50a, the second attachment surface 34 of the base 32 is disposed along the lower surface of the upper frame 50a in the rectangular frame 204 of the building 200 as shown in FIG. To do. And it is good to fix to the predetermined position of the upper frame 50a with the fastener (for example, screw) attached to the attachment hole 34a formed in the 2nd attachment surface 34. FIG.

<< Mounting structure of damping device 100 >>
As shown in FIG. 2, the vibration control device 100 includes a vibration control unit 10, a first transmission member 40, and a second transmission member 30. As shown in FIG. 1, the seismic control device 100 is disposed in a rectangular frame 204 of the building 200. In this embodiment, for example, the first transmission member 40 is attached to the lower frame 60a of the building 200. Further, the second transmission member 30 is attached to the upper frame 50a of the building 200. And it is good to arrange | position the damping unit 10 between the 1st transmission member 40 and the 2nd transmission member 30, and to attach to each. The attachment of the first transmission member 40 and the lower frame 60a, the attachment of the first transmission member 40 and the pair of outer plates 12, 13 and the attachment of the second transmission member 30 and the upper frame 50a are as already described. Therefore, explanation is omitted here.

  In the vibration control device 100, the shear displacement generated in the building 200 is transmitted to the vibration control unit 10 by the first transmission member 40 and the second transmission member 30. FIGS. 17A and 17B show a state in which the ceiling beam 50 and the base 60 are relatively displaced in the horizontal direction with respect to the building 200 to which the vibration control device 100 is attached. Here, FIG. 17A shows a state in which the ceiling beam 50 is displaced to the right side with respect to the base 60, and FIG. 17B shows a state in which the ceiling beam 50 is displaced to the left side with respect to the base 60. Shows the state. FIGS. 17A and 17B are simplified as appropriate. For example, the upper frame 50a and the lower frame 60a are not shown.

  In such a building 200, when a large earthquake occurs, the ceiling beam 50 and the base 60 shake with relative displacement in the horizontal direction. Therefore, the relative displacement between the first attachment surfaces 43d and 44d of the first transmission member 40 attached to the base 60 and the second attachment surface 34 of the second transmission member 30 attached to the ceiling beam 50 is achieved. Occurs. When the first mounting surfaces 43d and 44d of the first transmission member 40 and the second mounting surface 34 of the second transmission member 30 are relatively displaced, the opposing plates (12, 13) and 14 of the vibration control unit 10 are moved. A relative displacement occurs. When relative displacement occurs in the opposing plates (12, 13), 14, shear deformation occurs in the viscoelastic bodies 15, 16 as shown in FIG. During a large earthquake, the ceiling beam 50 (second transmission member 30) and the intermediate plate 14, and the base 60 (first transmission member 40) and the pair of outer plates 12 and 13 shake with relative displacement in the horizontal direction. . At this time, repeated shear loads are input to the viscoelastic bodies 15 and 16.

  As shown in FIG. 7, the viscoelastic bodies 15 and 16 have resistance to a shear load and, when subjected to vibration accompanied by shear deformation, have an area surrounded by the hysteresis loop H for each cycle. A corresponding amount of energy can be absorbed. For this reason, the seismic control device 100 can suppress the vibration of the building 200 at the time of an earthquake, attenuate the vibration at an early stage, and reduce the degree of damage and damage caused to the building 200.

<< Summary of vibration control device 100 >>
As described above, as shown in FIGS. 2 to 5, the proposed damping device 100 includes the intermediate plate 14, the pair of viscoelastic bodies 15 and 16, and the pair of outer plates 12 and 13, The 1st transmission member 40, the 2nd transmission member 30, and a fastening member (49a, 49b) are provided. The pair of viscoelastic bodies 15 and 16 are opposed to each other with the intermediate plate 14 interposed therebetween, and are bonded to the intermediate plate 14 respectively. The intermediate plate 14 extends in one direction from a portion where the viscoelastic bodies 15 and 16 are bonded. The pair of outer plates 12, 13 are bonded to the bonding portions 12 a, 13 a bonded to the outside of the pair of viscoelastic bodies 15, 16 facing each other with the intermediate plate 14 interposed therebetween, and the pair of viscoelastic bodies 15, 16. A direction in which the intermediate plate 14 extends from the portion includes a pair of facing portions 12b and 13b that extend along a direction orthogonal to each other and protrude from both sides of the intermediate plate 14 and the viscoelastic bodies 15 and 16 to face each other.

  The first transmission member 40 includes a substrate plate 46, attachment pieces 47 and 48, intermediate members 41 and 42, and first attachment surfaces 43d and 44d. The substrate plate 46 is disposed on the opposite side to the direction in which the intermediate plate 14 extends from the portion bonded to the pair of viscoelastic bodies 15 and 16 with respect to the outer plates 12 and 13. The mounting pieces 47 and 48 are base ends 47a and 48a welded to the substrate plate 46, and a pair of opposing members that extend from the substrate plate 46 and are arranged on both sides of the outer plates 12 and 13 by fastening members (49a and 49b). It has the connection parts 47b and 48b connected with the parts 12b and 13b, respectively. The intermediate members 41 and 42 are welded to the substrate plate 46 and extend from the substrate plate 46 toward the side opposite to the side on which the mounting pieces 47 and 48 are provided. The first mounting surfaces 43d and 44d are provided at the front ends of the intermediate members 41 and 42 toward the side opposite to the direction in which the intermediate plate 14 extends from the portion bonded to the pair of viscoelastic bodies 15 and 16. . The second transmission member 30 includes a base 32 and a second attachment surface 34. The base 32 is welded to the tip of the intermediate plate 14 extending from a portion bonded to the pair of viscoelastic bodies 15, 16 and faces the substrate plate 46 of the first transmission member 40. The second mounting surface 34 is provided on the base 32 facing away from the first mounting surfaces 43d and 44d.

  According to the vibration damping device 100, the pair of opposing portions 12b, 13b of the outer plates 12, 13 and the connecting portions 47b, 48b of the mounting pieces 47, 48 of the first transmission member 40 are connected to the fastening members (bolt nuts) 49a, All parts other than those connected by 49b are welded. That is, in this embodiment, the intermediate plate 14 of the vibration control unit 10 and the base 32 of the second transmission member 30 having the second attachment surface 34 are welded. Further, the base end portions 47 a and 48 a of the attachment pieces 47 and 48 attached to the outer plates 12 and 13 of the vibration control unit 10 and the substrate portion 46 a of the substrate plate 46 are welded. Further, the pair of side plate portions 46b and 46c of the substrate plate 46 and the two intermediate members 41 and 42 are welded to each other. Here, the front ends of the intermediate members 41 and 42 and the flange portions 43b and 44b of the base portions 43 and 44 having the second mounting surface 34 are welded, respectively.

  As described above, in the present vibration damping device 100, all the portions other than the outer plates 12, 13 and the first transmission member mounting pieces 47, 48 connected by the fastening members (bolt nuts) 49a, 49b are welded. ing. For this reason, it becomes possible to assemble the vibration control device 100 only by connecting the outer plates 12 and 13 and the mounting pieces 47 and 48 of the first transmission member 40 with the fastening members (bolt nuts) 49a and 49b. Improved workability. Moreover, the connection location by a fastening member (bolt nut) is reduced compared with the past, and the backlash by the sliding of a fastening member (bolt nut) reduces. For this reason, when the first mounting surfaces 43d, 44d and the second mounting surface 34 are relatively displaced in the horizontal direction during an earthquake, shear deformation can be appropriately imparted to the viscoelastic bodies 15, 16. Thereby, the vibration control device 100 can more appropriately exhibit the damping function.

  In this embodiment, the substrate plate 46 of the first transmission member 40 includes a base plate portion 46a to which the base end portions 47a and 48a of the mounting pieces 47 and 48 are welded, and base end portions 47a on both side edges of the base plate portion 46a, respectively. It includes a pair of side plate portions 46b and 46c that are bent to the surface opposite to the surface to which 48a is welded. The intermediate members 41 and 42 are sandwiched between the pair of side plate portions 46b and 46c and welded to the side plate portions 46b and 46c. Thus, the base plate portions 46a to which the base end portions 47a and 48a of the mounting pieces 47 and 48 are welded and the side plate portions 46b and 46c to which the intermediate members 41 and 42 are welded are formed by bending a single flat plate. Thus, the substrate plate 46 can be produced without using welding, and the processing cost can be kept low.

  In this case, as shown in FIGS. 9, 10, and 14, the intermediate members 41 and 42 may be sandwiched between the pair of side plate portions 46 b and 46 c and welded to the side plate portions 46 b and 46 c. In this case, the intermediate members 41 and 42 may be a prismatic material having a rectangular cross section. Thereby, a pair of side plate part 46b, 46c and the intermediate members 41 and 42 can be welded along the corner | angular part of the side peripheral surface of the said intermediate members 41 and 42. As shown in FIG. Further, the portions where the side surfaces 42c, 43c of the intermediate members 41, 42 and the edges 46b1, 46c1 of the pair of side plate portions 46b, 46c overlap are welded along the edges 46b1, 46c1 of the pair of side plate portions 46b, 46c. it can.

  Such a joining structure can secure a large number of welded portions between the substrate plate 46 of the first transmission member 40 and the intermediate members 41 and 42, and can join them more firmly. Thereby, at the time of an earthquake, shear deformation can be appropriately produced by the viscoelastic bodies 15 and 16, and the vibration damping device 100 can be functioned more effectively.

  Here, the surface 46a1 opposite to the surface to which the base end portions 47a and 48a of the base plate portion 46a are welded and the edges 41d and 42d of the tips 41a and 42a of the two intermediate members 41 and 42 are respectively abutted. It touches. As a result, a portion where the surface 46a1 opposite to the surface to which the base end portions 47a and 48a of the base plate portion 46a are welded and the edges 41d and 42d of the tips 41a and 42a of the intermediate members 41 and 42 overlap is defined as an intermediate member. It is possible to weld along the edges 41d and 42d of the tips 41a and 42a of the 41 and 42.

  At the time of an earthquake, a large load acts on a joint portion between the substrate plate 46 of the first transmission member 40 and the two intermediate members 41 and 42 attached to the outer plates 12 and 13 of the vibration control unit 10. However, according to the above configuration, the pair of side plate portions 46 b and 46 c of the substrate plate 46 and the intermediate members 41 and 42 are welded along the corners of the side peripheral surfaces of the intermediate members 41 and 42. Further, portions where the side surfaces 42c, 43c of the intermediate members 41, 42 and the edges 46b1, 46c1 of the pair of side plate portions 46b, 46c overlap are welded along the edges 46b1, 46c1 of the pair of side plate portions 46b, 46c. . Further, a portion where the surface 46a1 opposite to the surface to which the base end portions 47a and 48a of the base plate portion 46a are welded and the edges 41d and 42d of the tips 41a and 42a of the intermediate members 41 and 42 overlap is the intermediate member 41. , 42 are welded along the edges 41d and 42d of the tips 41a and 42a. As described above, the two intermediate members 41 and 42 and the substrate plate 46 sufficiently secure the welding location. Thus, the two intermediate members 41 and 42 and the substrate plate 46 are firmly joined. Thereby, sufficient resistance can be exhibited with respect to the deformation | transformation of the viscoelastic bodies 15 and 16 which arise at the time of an earthquake.

  In this embodiment, as shown in FIGS. 5, 12, and 13, the first transmission member 40 includes a sleeve 300 that penetrates the connecting portions 47 b and 48 b of the attachment pieces 47 and 48. The sleeve 300 is mounted in the gap between the opposing portions 12b and 13b of the pair of outer plates 12 and 13. The intermediate portion of the sleeve 300 that penetrates the connecting portions 47 b and 48 b of the attachment pieces 47 and 48 is welded to the attachment pieces 47 and 48. The sleeve 300 and the opposing portions 12b and 13b of the pair of outer plates 12 and 13 are connected by fastening members 49a and 49b. If it does in this way, in the structure which connects the 1st transmission member 40 and a pair of outer side plates 12 and 13, required intensity | strength can fully be ensured. In addition, the distance S1 between the pair of outer plates 12 and 13 is appropriately maintained, and shear deformation is appropriately generated in the viscoelastic bodies 15 and 16 with respect to the relative displacement of the intermediate plate 14 with respect to the pair of outer plates 12 and 13. be able to. Thereby, the vibration control device 100 can more appropriately exhibit the damping function.

  Furthermore, in this embodiment, as shown in FIGS. 4 and 5, the intermediate plate 14 of the vibration control unit 10 and the base 32 of the second transmission member 30 having the second mounting surface 34 are welded. Here, the intermediate plate 14 of the vibration control unit 10 and the base 32 of the second transmission member 30 are welded along the corners of the side peripheral surface of the intermediate plate 14. Thereby, at the time of an earthquake, the base 32 of the 2nd transmission member 30 and the intermediate | middle plate 14 of the damping unit 10 are rigidly joined, and are displaced integrally. For this reason, at the time of an earthquake, appropriate deformation | transformation arises with the viscoelastic bodies 15 and 16 of the damping unit 10, and the damping device 100 functions more appropriately.

  Heretofore, the vibration control device 100 according to the embodiment of the present invention has been described. The vibration control device 100 is not limited to the above-described embodiment.

  For example, in the above-described embodiment, the example in which the vibration control device 100 is attached to the first floor of the building 200 is illustrated, but the vibration control device 100 may be attached to two or more floors of the building 200. In the above-described embodiment, the vibration control device 100 has exemplified the form in which the vibration energy is absorbed by the viscoelastic bodies 15 and 16 of the vibration control unit 10, but the structure of the vibration control unit 10 is not limited to the above.

DESCRIPTION OF SYMBOLS 10 Damping unit 12, 13 Outer plate 12a, 13a Adhesive part 12b, 13b Opposite part 14 Intermediate | middle plate 15, 16 Viscoelastic body 22 Insertion hole 30 2nd transmission member 32 Base 34 Attachment surface 34a Bolt hole 40 1st transmission member 41 , 42 Intermediate member 43 Base portion 43a Base portion 43b Flange portion 43d, 44d Mounting surface 45 Bridge 46 Substrate plate 46a Substrate portion 46b, 46c Side plate portion 47, 48 Mounting piece 47a, 48a Base end portion 47b 48b Connecting portion 47c, 48c Boss 49a Bolt 49b Nut 50 Ceiling beam 50a Upper frame 60 Base 60a Lower frame 70a, 70b Column 100 Damping device 300 Sleeve H Hysteresis loop

Claims (6)

An intermediate plate, a pair of viscoelastic bodies, a pair of outer plates, a first transmission member, a second transmission member, and a fastening member;
The pair of viscoelastic bodies is
Are opposed to each other across the intermediate plate, and are bonded to the intermediate plate,
The intermediate plate is
It extends in one direction from the part where the viscoelastic body is bonded,
The pair of outer plates is
An adhesive part bonded to the outside of the pair of viscoelastic bodies facing each other with the intermediate plate interposed therebetween;
A direction in which the intermediate plate extends from a portion bonded to the pair of viscoelastic bodies extends along a direction orthogonal to each other, and protrudes on both sides from the intermediate plate and the viscoelastic body to face each other. And
The first transmission member is
A substrate plate, an attachment piece, an intermediate member, and a first attachment surface;
The substrate plate is
The outer plate is disposed on the opposite side to the direction in which the intermediate plate extends from the portion bonded to the pair of viscoelastic bodies,
The mounting piece is
A proximal end welded to the substrate plate;
A connecting portion extending from the substrate plate and connected to a pair of opposing portions disposed on both sides of the outer plate by the fastening member;
The intermediate member is
Welded to the substrate plate, extending from the substrate plate toward the side opposite to the side on which the mounting piece is provided,
The first mounting surface is
At the tip of the intermediate member, it is provided toward the opposite side to the direction in which the intermediate plate extends from the part bonded to the pair of viscoelastic bodies,
The second transmission member is
A base and a second mounting surface;
The base is
Welded to the tip of the intermediate plate extending from the portion bonded to the pair of viscoelastic bodies, facing the substrate plate of the first transmission member;
The second mounting surface is
The base is provided facing away from the first mounting surface.
Damping device. The substrate plate of the first transmission member is
A substrate portion to which a base end portion of the mounting piece is welded;
A pair of side plates bent to the opposite side of the surface to which the base end portion is welded at both side edges of the substrate portion;
The vibration control device according to claim 1, wherein the intermediate member is sandwiched between the pair of side plate portions and welded to the side plate portion. The intermediate member is a prismatic material having a rectangular cross section,
3. The vibration control device according to claim 2, wherein the pair of side plate portions and the intermediate member are welded along a corner portion of a side peripheral surface of the intermediate member.   Furthermore, the site | part which the side surface of the said intermediate member and the edge of a pair of said side plate part overlap is welded along the edge of the said pair of side plate part. The surface opposite to the surface to which the base end portion of the substrate portion is welded is in contact with the edge of the tip of the intermediate member,
The part where the surface opposite to the surface to which the base end portion of the base plate portion is welded and the edge of the tip of the intermediate member overlap is welded along the edge of the tip of the intermediate member. Item 5. A vibration control device according to any one of items 2 to 4. The first transmission member includes a sleeve that penetrates the connecting portion of the mounting piece,
The sleeve is mounted in the gap between the opposing portions of the pair of outer plates;
The intermediate part of the sleeve passing through the connecting portion of the mounting piece is welded to the mounting piece,
The vibration control device according to any one of claims 1 to 5, wherein the sleeve and the opposing portion of the pair of outer plates are connected by the fastening member.

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