JP4349110B2 - Damper device - Google Patents

Description

  The present invention relates to a damper device that is mounted in a brace shape within a frame surface composed of building columns and beams.

Conventionally, when a large-amplitude external force such as a large earthquake or a small-amplitude external force such as a wind load is input into a frame surface composed of columns and beams of a building, both these external forces are attenuated. A composite damper device in which a friction damper suitable for a large amplitude external force and a viscoelastic damper capable of accommodating a wide range of external forces from a small amplitude to a large amplitude are combined in series is used. This damper device is mounted in a brace shape within the frame surface, and a viscoelastic damper acts on an external force with a relatively small amplitude until the friction damper acts, and a relatively large amplitude. It is designed in advance so that only the friction damper acts on the external force without the viscoelastic damper. Thereby, both the effect of the improvement of the earthquake resistance of a building and the improvement of wind habitability could be achieved with only one damper device (see Patent Document 1).
JP 2001-342749 A

  However, the conventional damper device combines two dampers, a friction damper and a viscoelastic damper, in series. Therefore, if it is attempted to secure a damping force of the same capacity in each damper, the overall length dimension is approximately doubled. There is a problem that the damper device becomes large. On the other hand, when trying to keep the length of the damper device as usual, the length of each damper has to be approximately halved, and there is a problem that the damping force capacity of each damper is halved. In short, the damper device having the same dimensions as the conventional one has a problem that the damping performance of each damper cannot be sufficiently secured.

  The object of the present invention is to achieve both effects of improving earthquake resistance and wind habitability in a building with a single member, and providing sufficient damping performance for both large and small amplitude external forces. The object is to provide a damper device that can be secured.

The present invention is a damper device mounted in a brace shape in a frame surface constituted by columns and beams of a building, one end of which is connected to one column beam connecting portion of the frame; A second member attached to the surface of the first member via a first damper member that generates a damping force against a large-amplitude external force, and the surface of the second member to the first member The other damper member is installed via a second damper member that is provided so as to overlap with the damper member of the second embodiment and generates a damping force with respect to an external force of a small amplitude, and is opposite to the one column beam coupling portion in the diagonal direction. A third member coupled to the beam-to-column coupling portion, and the second member includes a tubular body and a coupling plate that couples opposing surfaces of the tubular body, and on the surface of the coupling plate, The first member is attached via the first damper member, and the tubular member On the surface of the characterized that you have attached is the third member through the second damper member.

  In addition, since the first damper member and the second damper member are configured to overlap each other, the length dimension of one damper member is not limited by the length of the other damper member. By securing the length of the member, sufficient damping performance can be ensured for both large and small amplitude external forces.

Further, the second member, the tubular body and, a connecting plate for connecting the opposing surfaces of the tubular body, on the surface of the connecting plate, the first member through the first damper member Since the third member is attached to the surface of the tubular body via the second damper member, the buckling deformation of the connecting plate is prevented, and the first damper member Damper performance can be secured stably. Moreover, since the 1st member was arrange | positioned inside a tubular body, since the outer peripheral part of a 1st member is not exposed, while being able to ensure the design property of an external appearance, it can apply also to the place exposed outside.
In this case, the tubular body has a rectangular cross-sectional shape, said third member is mounted through the second damper member on the surface of both of the facing surfaces, extending from the opposing surface to both sides The second damper is provided so as to extend along a plate member having an extending portion to be extended , each of another opposing surface connecting both sides of the opposing surface of the tubular body, and the extending portion facing each other. It is good also as providing the cross-sectionally U-shaped member respectively attached to both surfaces of said another opposing surface via a member.

Further, in the damper device, the third member includes a tubular body and a connecting plate that connects opposing surfaces of the tubular body, and the surface of the connecting plate is interposed via the second damper member. The second member may be attached, and the first member may be attached to the surface of the second member via the first damper member.
According to such a configuration, buckling deformation of the connecting plate can be prevented, and the damper performance of the second damper member can be stably secured. Moreover, since the 1st member and the 3rd member are arrange | positioned inside a tubular body, since the outer peripheral part of the 1st and 3rd member is not exposed, while being able to ensure the design property of an external appearance, the place exposed outside It can also be applied to.

In the damper device, the second member is an H-shaped member, and the first member is attached to the surface of the web of the H-shaped member via the first damper member. The third member can be attached to the surface of the flange of the H-shaped member with the second damper member interposed therebetween.
According to such a configuration, since the H-shaped steel having a relatively high versatility can be used as the H-shaped member in cross section, the damper device can be configured relatively simply and is easy to manufacture.

  In the above damper device, the second damper member may be a viscoelastic body. With such a configuration, for example, compared to a case where the second damper member is a friction material, a relatively small and simple configuration can be achieved.

  According to the damper device of the present invention, it is possible to achieve both effects of improving earthquake resistance and improving wind habitability in a building with a single member, and sufficiently attenuating any external force of large amplitude or amplitude. There is an effect that performance can be secured.

[First Embodiment]
Hereinafter, a damper device concerning a 1st embodiment of the present invention is explained based on a drawing.
FIG. 1 is a front view schematically showing a state in which the damper device 1 according to the first embodiment of the present invention is attached to a frame 13 of a building 10.
The building 10 is composed of a plurality of frames 13 composed of columns 11 and beams 12 arranged at predetermined intervals. As shown in FIG. 1, each frame 13 includes a left column 11A, a right column 11B, and an upper beam 12A. And the lower beam 12B.
As shown in FIG. 1, in the plane surrounded by each frame 13, a lower left column beam coupling portion 13 </ b> A as one column beam coupling portion, which is a joint portion of the left column 11 </ b> A and the lower beam 12 </ b> B, and the right column 11 </ b> B. And the upper-right column beam coupling portion 13B as another column beam coupling portion that is a joint portion of the upper beam 12A and is opposite to the lower left column beam coupling portion 13A in the diagonal direction, both ends of the damper device 1 Connection members 15 for connecting the respective parts are attached. As shown in FIG. 1, each connecting member 15 includes a web surface 15 </ b> A and a flange surface 15 </ b> B that is suspended along a side portion of the web surface 15 </ b> A.

FIG. 2 is a perspective view showing a part of the damper device 1, and FIG. 3 is a longitudinal sectional view showing the damper device 1.
As shown in FIGS. 1 to 3, the damper device 1 is attached to the frame 13 in a brace shape, and a pair of first plate members 110 that are first members and a pair of first plate members 110 face each other. A connecting plate 130 attached to the surface via a friction material 120 as a first damper member, a disc spring unit 140 as pressing means for pressing the pair of first plate members 110 and the connecting plate 130 together, and the connecting plate 130 A pair of square steel pipes 150 as tubular bodies welded to the side surfaces 130X, and a pair of third members attached to the surfaces of the square steel pipes 150 via viscoelastic bodies 160 as second damper members. And a third plate member 170. The connecting plate 130 and the square steel pipe 150 constitute the second member of the claims.

  In the damper device 1, when a large amplitude external force such as a large earthquake is input, only the friction material 120 that generates a damping force acts on the large amplitude external force, and a small earthquake such as a small earthquake or wind load is applied. When an external force with an amplitude is input, it is designed in advance so that only the viscoelastic body 160 that generates a damping force acts on the external force with a small amplitude.

Although not shown in the drawing, the connecting plate 130 has a plurality of insertion holes formed at predetermined intervals along the longitudinal direction at substantially the center in the width direction.
The square steel pipe 150 has substantially the same length as the length of the connecting plate 130 and includes an upper plate 151, a lower plate 152, a left plate 153, and a right plate 154. On the inner side surface of the square steel pipe 150, the side surface 130 </ b> X of the connecting plate 130 is welded to the center portion in the width direction of the upper plate 151 and the lower plate 152 facing each other.

  As shown in FIGS. 2 and 3, the pair of first plate members 110 have substantially the same width dimension as the connection plate 130, but are larger in the longitudinal dimension. The pair of first plate members 110 are arranged so that the right end portion 110 </ b> A thereof is substantially aligned with the right end portion 130 </ b> A of the connecting plate 130. For this reason, the left end portion 110 </ b> B, which is one end of the pair of first plate members 110, protrudes to the left from the left end portion 130 </ b> B of the connecting plate 130. As shown in FIG. 1, the left end portion 110 </ b> B of the pair of protruding first plate members 110 is bolted to the web surface 15 </ b> A of the connection member 15 located at the lower left column beam coupling portion 13 </ b> A of the frame 13.

  In addition, as shown in FIG. 2, in the pair of first plate members 110, long holes (not shown) extending in the longitudinal direction corresponding to the insertion holes of the connection plate 130 are formed in portions overlapping the connection plate 130. Further, the friction material 120 that contacts the front and back surfaces of the connecting plate 130 is fixedly disposed so as to avoid these long holes. The friction material 120 generates a damping force with respect to an external force having a large amplitude, and has a constant friction coefficient and a characteristic with low wear. For example, a thermosetting resin is used as a constituent material thereof. In addition, a fiber material such as aramid fiber, glass fiber, or vinylon fiber, a friction modifier such as cashew dust, a filler such as barium sulfate, or the like can be used.

  As shown in FIG. 3, the disc spring unit 140 includes a bolt 141, a plurality of disc springs 142, and a nut 143 for joining to the bolt 141. In the disc spring unit 140, after the bolt 141 is inserted through the insertion hole of the connecting plate 130 and the long hole of the pair of first plate members 110, the head 141A of the bolt 141 is moved to the left first plate member 110 in FIG. , And a plurality of disc springs 142 are inserted into the shafts of the bolts 141 and tightened with nuts 143 to compress the disc springs 142. The compression force of the disc springs 142 ensures a certain frictional force. ing.

  As shown in FIGS. 2 and 3, the pair of third plate members 170 has a width direction dimension substantially the same as the width direction dimension of the square steel pipe 150 and a length direction dimension of the pair of first plate members. It is formed to be substantially the same as the length dimension of 110. The pair of third plate members 170 and the upper plate 151 and the lower plate 152 of the square steel pipe 150 are arranged via the viscoelastic body 160 so that the ends in the width direction are substantially aligned vertically.

  Further, as shown in FIG. 2, the pair of third plate members 170 are arranged so that the left end portion 170 </ b> A thereof is substantially aligned with the left end portion 150 </ b> A of the square steel pipe 150. For this reason, the right end portion 170B of the pair of third plate members 170 protrudes to the right from the right end portion 150B of the square steel pipe 150. As shown in FIG. 1, the protruding right end portion 170B of the pair of third plate members 170 is bolted to the pair of flange surfaces 15B of the connection member 15 located at the column beam coupling portion 13B on the upper right side in the frame 13. ing.

  As described above, in the damper device 1, the pair of first plate members 110 are attached to the front and back surfaces of the connecting plate 130 via the friction material 120 so as to be slidable in the longitudinal direction. 150 is welded to the inner surface, and a pair of third plate members 170 are slidably attached to the upper plate 151 and the lower plate 152 of the square steel pipe 150 via the viscoelastic body 160 in the longitudinal direction. It becomes the composition.

  Here, when a small-amplitude external force such as a wind load is input to the frame 13 to which the damper device 1 is attached, the pair of third plate members 170 are applied in the longitudinal direction, that is, the load, due to the shear strain of the viscoelastic body 160. The external force is attenuated by relative displacement in the direction of movement. In addition, when a large amplitude external force such as a large earthquake is input to the frame 13 to which the damper device 1 is attached, the pair of first plate members 110 are relative to the connecting plate 130 in the longitudinal direction, that is, the direction in which the load acts. Displaces and attenuates external force by friction at this time. As described above, the damper device 1 can cope with both the small amplitude external force and the large amplitude external force.

The first embodiment described above has the following effects.
(1) By attaching the damper device 1 as one member to the frame 13 of the building 10 in a brace shape, even if the input external force has a large amplitude or a small amplitude, the friction material 120 or the viscoelastic body 160 can act to attenuate the external force. That is, the effects of improving the earthquake resistance of the building 10 including the frame 13 and improving the wind habitability can be achieved.

  (2) Since the friction material 120 and the viscoelastic body 160 overlap each other, the length of the friction material 120 is not limited by the length of the viscoelastic body 160, and similarly, the viscoelastic body 160 Since the length dimension is not limited by the length of the friction material 120, the length dimensions of the friction material 120 and the viscoelastic body 160 are the same even when the length dimension of the damper device 1 is the same as the conventional one. It is possible to ensure sufficient attenuation performance.

  (3) Since the side surface 130X of the connecting plate 130 and the upper plate 151 and the lower plate 152 of the square steel pipe 150 are welded, the buckling deformation of the connecting plate 130 is prevented, and the damper function by the friction material 120 is stable. Can be secured.

  (4) Since the outer periphery of the disc spring unit 140 and the like is covered with the square steel pipe 150, the outer peripheral portion is not exposed, so that the design of the appearance can be improved and the damper device 1 can be installed at a place exposed to the outside. Applicable.

  (5) Since the pressing means is configured as the disc spring unit 140, a stable pressing force can be secured by the disc spring 142 of the disc spring unit 140, and the earthquake resistance of the building can be improved.

  (6) Since the disc spring units 140 are arranged at predetermined intervals along the longitudinal direction of the pair of first plate members 110, the frictional force between the pair of first plate members 110 and the connecting plate 130 acts evenly. Can further improve the earthquake resistance.

  (7) Since the damper member for the small amplitude external force is the viscoelastic body 160, the damper device 1 can be made relatively small and simple.

[Second Embodiment]
Next, the damper apparatus 2 which concerns on 2nd Embodiment of this invention is demonstrated based on drawing.
FIG. 4 is a transverse sectional view showing the damper device 2 according to the second embodiment, and FIG. 5 is a longitudinal sectional view showing the damper device 2. In addition, the same code | symbol is attached | subjected to the same or equivalent component as said 1st Embodiment, and description is abbreviate | omitted or simplified.
As shown in FIGS. 4 and 5, the damper device 2 is attached to the frame 13 in the form of a brace, and a pair of first plate members 210 and a friction material 120 are provided between opposing surfaces of the first plate members 210. A pair of second plate members 220 attached to each other, a connecting plate 230 attached to the opposing surface of each second plate member 220 via a viscoelastic body 160, a square steel pipe 150 welded to the side surface 230X of the connecting plate 230, A pair of first plate members 210, a pair of second plate members 220, and a disc spring unit 140 that presses the connecting plate 230 together are provided. The connecting plate 230 and the square steel pipe 150 constitute the third member in the claims.

  Similarly to the damper device 1 of the first embodiment, in the damper device 2, when a large amplitude external force such as a large earthquake is input, the friction material 120 generates a damping force with respect to the large amplitude external force. When a small-amplitude external force such as a small earthquake or wind load is input, only the viscoelastic body 160 that generates a damping force acts on the small-amplitude external force. Yes.

Although not shown in the drawing, the connecting plate 230 has a plurality of elongated holes extending in the longitudinal direction at predetermined intervals along the longitudinal direction at substantially the center in the width direction.
As shown in FIGS. 4 and 5, the pair of second plate members 220 have substantially the same width dimension as the connection plate 230, but are smaller in the longitudinal direction, and the left end 220 </ b> A is connected to the connection plate 230. It arrange | positions so that the left end part 230B of the board 230 may be substantially aligned up and down. For this reason, the right end portion 230 </ b> A of the connecting plate 230 protrudes to the right from the facing surfaces of the pair of second plate members 220. The protruding right end portion 230A is bolted to the connection member 15 of the column beam coupling portion 13B on the upper right side of the frame 13 with reference to FIG. The pair of second plate members 220 are formed with insertion holes (not shown) corresponding to the long holes of the connecting plate 230.

As shown in FIGS. 4 and 5, the pair of first plate members 210 are formed with the same width as the connecting plate 230, and the right end portion 210 </ b> A thereof is substantially aligned with the right end portion 220 </ b> B of the pair of second plate members 220. Are arranged as follows. For this reason, the left end portion 210 </ b> B, which is one end of the pair of first plate members 210, protrudes to the left from the pair of second plate members 220. Further, a long hole (not shown) corresponding to the long hole is formed in the pair of first plate members 210.
Further, with reference to FIG. 1, the pair of first plate members 210 has a left end portion 210 </ b> B bolted to the connection member 15 of the lower left column beam coupling portion 13 </ b> A in the frame 13.

  As shown in FIGS. 4 and 5, the square steel pipe 150 is formed with a size that completely covers the pair of second plate members 220, the friction material 120, the viscoelastic body 160, and the disc spring unit 140, and the inner left and right side surfaces Is welded to the side surface 230X of the connecting plate 230. As shown in FIG. 4, the square steel pipe 150 has a left end portion 210B side of the pair of first plate members 210 protruding leftward from the left end portion 150A, and a right end portion 230A side of the connecting plate 230 protruding rightward from the right end portion 150B. ing.

  As described above, in the damper device 2, the pair of second plate members 220 are attached to the front and back surfaces of the connecting plate 230 via the viscoelastic body 160 so as to be slidable in the longitudinal direction, and the pair of second plate members 220 are opposed to each other. A pair of first plate members 210 is attached to a surface opposite to the surface via a friction material 120 so as to be slidable in the longitudinal direction.

  Here, when a small amplitude external force such as a wind load is input to the frame 13 to which the damper device 2 is attached, the connecting plate 230 and the pair of second plate members 220 are moved in the longitudinal direction due to the shear strain of the viscoelastic body 160. That is, the external force is attenuated by relative displacement in the direction in which the load acts. When a large amplitude external force such as a large earthquake larger than a predetermined external force is input to the frame 13 to which the damper device 2 is attached, the pair of second plate members 220 and the pair of first plate members 210 are in the longitudinal direction, that is, Relative displacement occurs in the direction in which the load acts, and external force is attenuated by friction at this time. Accordingly, it is possible to deal with both external forces of small amplitude and large amplitude. Such a second embodiment has substantially the same effect as the first embodiment.

[ Reference example ]
Next, a damper device 3 according to a reference example of the present invention will be described with reference to the drawings.
FIG. 6 is a longitudinal sectional view showing a damper device 3 according to this reference example .
As shown in FIG. 6, the damper device 3 has substantially the same configuration as that of the first embodiment, but includes an H-shaped steel 300 that is an H-shaped cross section instead of the connecting plate 130 and the square steel pipe 150. Is different. Therefore, this difference will be described below.
The H-shaped steel 300 includes a web part 310 and a pair of flange parts 320 perpendicular to the web part 310. The web portion 310 corresponds to the connecting plate 130, and the pair of flange portions 320 correspond to the upper plate 151 and the lower plate 152 of the square steel pipe 150 of the first embodiment.

According to such a reference example , in addition to the same effects as (1), (2), (5) to (7) in the first embodiment, there are the following effects.
(8) Since the existing H-shaped steel 300 is used, the damper device 3 can be configured relatively easily and is easy to manufacture.

In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.
FIG. 7 is a longitudinal sectional view showing a damper device 4 according to a modification of the present invention.
As shown in FIG. 7, the damper device 4 is different from the damper device 1 of the first embodiment in that the dimension in the width direction of the pair of third plate members 170 is formed to extend from the third plate member 170. The point 400 is different in that it includes a portion 400 and two channel steels 410 disposed between the extending portions 400 facing each other on the left and right sides of the square steel pipe 150.

As shown in FIG. 7, the channel steel 410 is a member having a U-shaped cross section, and includes a horizontal portion 411 and bent portions 412 that are bent at both ends of the horizontal portion 411 vertically. The horizontal portion 411 and the left plate 153 and the right plate 154 of the square steel pipe 150 are slidably attached via the viscoelastic body 160, respectively. Further, the two bent portions 412 of each channel steel 410 are opposed to the extended portions 400 of the pair of third plate members 170, respectively. One end of the channel steel 410 is joined to the connection member 15 of the column beam coupling portion 13B on the upper right side of the frame 13 with reference to FIG.
According to such a damper device 4, in addition to the same effect as the first embodiment, the amount of the viscoelastic body is increased as compared with the first embodiment, so that the damping capacity of the viscoelastic damper is increased. In addition, since the grooved steel 410 is provided, the rigidity of the pair of third plate members 170 can be improved, and the effect that the damper performance can be stably exhibited can be achieved.

FIG. 8 is a longitudinal sectional view showing a damper device 5 according to another reference example of the present invention.
As shown in FIG. 8, the damper device 5 includes two groove steels 410 instead of the pair of first plate members 110 in the damper device 3 of the reference example , and the groove steel 410 and the pair of flange portions 320. The four fourth plate members 180 are arranged between the two. As shown in FIG. 8, the grooved steel 410 includes a horizontal portion 411 corresponding to the pair of first plate members 110 and a bent portion 412 where both ends of the horizontal portion 411 are bent vertically.

Viscoelastic bodies 160 are respectively disposed on the front and back surfaces of each fourth plate member 180, and the flange portion 320, the bent portion 412, and the fourth plate member 180 are joined via these viscoelastic bodies 160. . Further, the end of the grooved steel 410 on the front side in FIG. 8 in the drawing is joined to the connecting member 15 of the column beam coupling portion 13A on the lower left side of the frame 13 (see FIG. 1). Further, the end portion of the fourth plate member 180 on the back side in FIG. 8 is joined to the connection member 15 of the column beam coupling portion 13B on the right upper and lower sides (see FIG. 1).
According to the damper device 5, in addition to the same effect of the reference example, by the amount of the viscoelastic body is increased compared to the reference example, can increase the attenuation capacity of the viscoelastic damper, further Since the grooved steel 410 is used in place of the pair of first plate members 110, the rigidity can be increased as compared with the pair of first plate members 110, and the damper performance can be exhibited stably. it can.

In the first implementation embodiment, it connects the width direction of the pair of third plate member 170 may be provided with a clothing member covering the outer periphery of the inner member. In this case, the rigidity of the pair of third plate members 170 can be increased, and the design of the damper device can be improved.
In each of the above embodiments, the damper member for small amplitude is a viscoelastic body, but a friction material may be used. In this case, the friction material may be designed so as to be able to cope with an external force having a small amplitude. Moreover, in each said embodiment, although the material of each board | plate material is not specifically limited, For example, it can be made from steel.

In each said embodiment, although the press means was comprised as a disc spring unit, it is not restricted to this, For example, other press means, such as what was made into a mere bolt and nut joint, can be employ | adopted.
Further, in each of the above embodiments, it is designed in advance so that only the friction material acts on the large amplitude external force without acting the viscoelastic body.For example, when an external force having a certain amplitude or more is input, A mechanism for forcibly regulating the action of the viscoelastic body may be provided. Thereby, only a friction material can be made to act when a large amplitude external force is input.

It is a front view showing typically a mode that a damper device concerning a 1st embodiment of the present invention was attached to a frame of a building. It is a perspective view which shows the damper apparatus which concerns on the said 1st Embodiment. It is a longitudinal cross-sectional view which shows the damper apparatus which concerns on the said 1st Embodiment. It is a cross-sectional view showing a damper device according to a second embodiment of the present invention. It is a longitudinal cross-sectional view which shows the damper apparatus which concerns on the said 2nd Embodiment. It is a longitudinal section showing a damper device concerning a reference example of the present invention. It is a longitudinal cross-sectional view which shows the damper apparatus which concerns on the modification of this invention. It is a longitudinal cross-sectional view which shows the damper apparatus which concerns on the other reference example of this invention.

Explanation of symbols

1-5 Damper device 10 Building 11 Column 12 Beam 13 Frame 13A Lower left column beam coupling portion 13B which is one column beam coupling portion 13B Upper right column beam coupling portion 110 which is another column beam coupling portion A pair of first Plate material 110B Left end 120 as one end Friction material 130 Connecting plate 140 Belleville spring unit 150 as pressing means Square steel pipe 151 Upper plate 152 constituting the facing surface Lower plate 160 constituting the facing surface Viscoelastic body 170 Pair of thirds Plate material 210 A pair of first plate materials 210B A left end portion 220 as one end A pair of second plate materials 230 A connecting plate 300 H-shaped steel 310 A web portion 320 A flange portion

Claims (4)

A damper device mounted in a brace shape in a frame surface composed of pillars and beams of a building,
A first member having one end coupled to one column beam coupling portion of the frame;
A second member attached to the surface of the first member via a first damper member that generates a damping force against a large-amplitude external force;
The one pillar is attached to the surface of the second member via a second damper member that is provided so as to overlap the first damper member and generates a damping force with respect to an external force having a small amplitude. A third member coupled to the beam coupling portion and another column beam coupling portion diagonally opposed to each other ;
The second member includes a tubular body and a connecting plate that connects opposing surfaces of the tubular body, and the first member is attached to the surface of the connecting plate via the first damper member. It is, on the surface of the tubular body, a damper device which is characterized that you have the third member is mounted through the second damper member. The damper device according to claim 1,
The first damper member is a friction material, and includes a pressing unit that presses the first and second members through the friction material. The damper device according to claim 1 or 2 ,
The tubular body has a rectangular cross-sectional shape ;
The third member is
A plate member attached to both surfaces of the opposing surface via the second damper member and having an extending portion extending from the opposing surface to both sides thereof ;
Provided along each of the opposing surfaces that connect both sides of the opposing surface of the tubular body and the extending portions that oppose each other, and through the second damper member, the additional opposing surface And a member having a U-shaped cross-section attached to each of both surfaces of the damper device. In the damper device according to any one of claims 1 to 3 ,
The damper device is characterized in that the second damper member is a viscoelastic body.

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