Viscoelastic Damper

Abstract

To provide a viscoelastic damper capable of suppressing deterioration over time due to temperature changes in the installation environment. [Solution] The viscoelastic damper comprises a pair of plate-shaped bodies, a viscoelastic body arranged between the pair of plate-shaped bodies, and a sealing member that isolates the viscoelastic body from the outside, and the sealing member is arranged between the pair of plate-shaped bodies at a position away from the outer peripheral surface of the viscoelastic body.

Description

[Technical Field]

[0001] The present disclosure relates to a viscoelastic damper. [Background technology]

[0002] A viscoelastic damper includes a pair of plate-like bodies and a viscoelastic body disposed between the pair of plate-like bodies. The viscoelastic damper is a vibration damper that absorbs vibration energy by causing the pair of plate-like bodies to move relative to each other mainly in a direction along the plate surfaces due to external vibration, deforming the viscoelastic body, and converting the strain energy inside the viscoelastic body into thermal energy. Viscoelastic dampers are used not only in buildings but also in many fields that require vibration isolation, such as automobiles, ships, and electrical appliances. Some conventional viscoelastic dampers are provided with a sealing member that isolates the viscoelastic body from the external environment to prevent deterioration of the viscoelastic body due to contact with the atmosphere in the installation environment (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-039913 Summary of the Invention [Problem to be solved by the invention]

[0004] In the viscoelastic damper of Patent Document 1, the seal member is disposed in close contact with the outer peripheral surface of the viscoelastic body, so temperature changes in the installation environment are easily transmitted to the outer peripheral surface of the viscoelastic body through the seal member, leaving room for improvement in terms of deterioration over time due to temperature changes in the installation environment. Therefore, a viscoelastic damper that can suppress deterioration over time due to temperature changes in the installation environment has been desired.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and aims to provide a viscoelastic damper that can suppress deterioration over time due to temperature changes in the installation environment. [Means for solving the problem]

[0006] A viscoelastic damper according to one aspect of the present disclosure is a viscoelastic damper comprising a pair of plate-shaped bodies, a viscoelastic body arranged between the pair of plate-shaped bodies, and a sealing member that isolates the viscoelastic body from the outside, wherein the sealing member is arranged between the pair of plate-shaped bodies at a position away from the outer peripheral surface of the viscoelastic body. [Effects of the Invention]

[0007] According to one aspect of the present disclosure, it is possible to provide a viscoelastic damper that can suppress deterioration over time due to temperature changes in the installation environment. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a viscoelastic damper according to a first embodiment. [Figure 2] FIG. 1 is a front view of a viscoelastic damper according to a first embodiment. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. [Figure 4] 4 is a cross-sectional view taken along line IV-IV in FIG. 2, showing the positional deviation suppression unit according to the first embodiment. FIG. [Figure 5] FIG. 10 is a cross-sectional view showing a positional deviation suppression section according to a first modified example of the first embodiment. [Figure 6] FIG. 10 is a cross-sectional view showing a positional deviation suppression section according to a second modified example of the first embodiment. [Figure 7] FIG. 10 is a cross-sectional view showing a positional deviation suppression section according to a third modified example of the first embodiment. [Figure 8] FIG. 10 is a front view of a viscoelastic damper according to a second embodiment. [Figure 9] FIG. 10 is a cross-sectional view of a viscoelastic damper according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] First Embodiment A viscoelastic damper 1 according to a first embodiment of the present disclosure will now be described with reference to the drawings. Fig. 1 is a perspective view of the viscoelastic damper 1. Fig. 2 is a front view of the viscoelastic damper 1. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 2. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 2.

[0010] As shown in FIG. 1, the viscoelastic damper 1 includes a first plate-like body 10 and a second plate-like body 20 (a pair of plate-like bodies), a viscoelastic body 30, and a sealing member 40. The first plate-like body 10 and the second plate-like body 20 are attached to an architectural structure (not shown). The viscoelastic body 30 is disposed between the first plate-like body 10 and the second plate-like body 20, and absorbs vibration energy transmitted from the architectural structure to the first plate-like body 10 and the second plate-like body 20. The sealing member 40 is disposed between the first plate-like body 10 and the second plate-like body 20, and isolates the viscoelastic body 30 from the outside.

[0011] Hereinafter, when describing each direction in the viscoelastic damper 1, the direction in which the first plate-like body 10 and the second plate-like body 20 are aligned will be referred to as the alignment direction Z. A direction perpendicular to the alignment direction Z will be referred to as the first direction X. A direction perpendicular to the alignment direction Z and the first direction X will be referred to as the second direction Y. The first direction X is the direction in which the viscoelastic body 30 damps vibration. The first direction X may be a vertical direction, a horizontal direction, or a direction inclined relative to the vertical direction and / or the horizontal direction.

[0012] In this embodiment, the viscoelastic damper 1 includes one first plate-like body 10, two second plate-like bodies 20 arranged on either side of the first plate-like body 10 in the arrangement direction Z, and two viscoelastic bodies 30 and two sealing members 40 arranged between the first plate-like body 10 and each of the second plate-like bodies 20. However, the numbers of first plate-like bodies 10, second plate-like bodies 20, viscoelastic bodies 30, and sealing members 40 are not limited to these.

[0013] The first plate-like body 10 and the second plate-like body 20 are plates made of metal, such as steel or aluminum. The first plate-like body 10 and the second plate-like body 20 are arranged so that their plate surfaces face the arrangement direction Z. The first plate-like body 10 and the second plate-like body 20 are formed into a rectangular shape when viewed from the arrangement direction Z. The first plate-like body 10 and the second plate-like body 20 face each other in the arrangement direction Z with a gap therebetween. More specifically, as shown in FIG. 3 , the plate surface 10a of the first plate-like body 10 and the plate surface 20a of the second plate-like body 20 face each other in the arrangement direction Z with a gap therebetween. The first plate-like body 10 and the second plate-like body 20 are arranged so that their positions in the first direction X are different. The sizes of the first plate-like body 10 and the second plate-like body 20 in the second direction Y are equal to each other. The positions of the first plate-like body 10 and the second plate-like body 20 in the second direction Y are aligned with each other.

[0014] The first plate-like body 10 has a first end 10b located on one side in the first direction X and a second end 10c located on the other side. The first end 10b protrudes from the second plate-like body 20 on one side in the first direction X. A first mounting portion 11 (mounting portion) is provided on the first end 10b for mounting the first plate-like body 10 to an installation location on an architectural structure. The first mounting portion 11 is provided with a plurality of mounting holes 11a used when mounting the first plate-like body 10 to an architectural structure.

[0015] The second plate-like body 20 has a first end 20b located on one side in the first direction X and a second end 20c located on the other side. The second end 20c protrudes from the first plate-like body 10 to the other side in the first direction X. A second mounting portion 21 (mounting portion) is provided on the second end 20c for mounting the second plate-like body 20 to an installation location on an architectural structure. The second mounting portion 21 is provided with a plurality of mounting holes 21a that are used when mounting the second plate-like body 20 to an architectural structure.

[0016] The viscoelastic body 30 is a plate-like member. The viscoelastic body 30 is formed in a rectangular shape when viewed from the arrangement direction Z. The material of the viscoelastic body 30 can be appropriately selected from, for example, acrylic resin, silicone resin, butyl rubber, butadiene rubber, or a mixture thereof. The viscoelastic body 30 is disposed between the plate surface 10a of the first plate 10 and the plate surface 20a of the second plate 20. When viewed from the arrangement direction Z, the viscoelastic body 30 is disposed inside the region where the first plate 10 and the second plate 20 overlap. The size of the viscoelastic body 30 in the first direction X is smaller than the size of the first plate 10 and the second plate 20 in the first direction X. The size of the viscoelastic body 30 in the second direction Y is smaller than the size of the first plate 10 and the second plate 20 in the second direction Y.

[0017] The viscoelastic body 30 is bonded to the plate surface 10a of the first plate-like body 10 and the plate surface 20a of the second plate-like body 20. For example, the viscoelastic body 30 is vulcanization-bonded to the plate surfaces 10a and 20a. Of the surfaces of the viscoelastic body 30, the surfaces that are not in contact with the plate surface 10a of the first plate-like body 10 and the plate surface 20a of the second plate-like body 20 constitute the outer peripheral surface 30a of the viscoelastic body 30. The outer peripheral surface 30a has a pair of first surfaces 31 extending in the first direction X and a pair of second surfaces 32 extending in the second direction Y.

[0018] The sealing member 40 is annular and disposed between the first plate-like member 10 and the second plate-like member 20 so as to surround the viscoelastic body 30. When viewed from the arrangement direction Z, the sealing member 40 is disposed along the outer peripheral surface 30a of the viscoelastic body 30. The sealing member 40 is formed of a weather-resistant and airtight material. The sealing member 40 may be made of the same material as the viscoelastic body 30 or a different elastic material from the viscoelastic body 30. Examples of materials that can be used for the sealing member 40 include acrylic resin, silicone resin, epoxy resin, fluororesin, polyurethane resin, butyl rubber, butadiene rubber, and mixtures thereof. Alternatively, the sealing member 40 may be made of a polyethylene coating, vinyl coating, or the like. The use of the sealing member 40 prevents the viscoelastic body 30 from being deteriorated by contact with the atmosphere in the installation environment of the viscoelastic damper 1.

[0019] The seal member 40 is disposed at a position spaced apart from the outer peripheral surface 30a of the viscoelastic body 30. In the present embodiment, the seal member 40 is disposed at a position spaced apart from the viscoelastic body 30 around the entire periphery of the outer peripheral surface 30a. Specifically, the seal member 40 is formed in a rectangular frame shape and has a pair of first seal portions 41 extending in the first direction X and facing each other in the second direction Y, and a pair of second seal portions 42 extending in the second direction Y and facing each other in the first direction X. The first seal portions 41 are disposed at a position spaced apart from the first surface 31, and the second seal portions 42 are disposed at a position spaced apart from the second surface 32.

[0020] If a sealing member is disposed in close contact with the outer peripheral surface of the viscoelastic body, temperature changes in the installation environment of the viscoelastic damper are easily transmitted to the outer peripheral surface of the viscoelastic body through the sealing member, which may accelerate deterioration of the viscoelastic body over time. In this embodiment, the sealing member 40 is disposed at a position separated from the outer peripheral surface 30a of the viscoelastic body 30. The formation of a space S between the outer peripheral surface 30a of the viscoelastic body 30 and the sealing member 40 provides a heat insulating effect, which makes it possible to suppress deterioration of the viscoelastic body 30 over time due to temperature changes in the installation environment of the viscoelastic damper 1, compared to, for example, a case in which a sealing member is disposed in close contact with the outer peripheral surface of the viscoelastic body.

[0021] The seal member 40 contacts the first plate-like body 10 and the second plate-like body 20, and the space S between the outer peripheral surface 30 a of the viscoelastic body 30 and the seal member 40 (more specifically, the space formed by the first plate-like body 10, the outer peripheral surface 30 a of the viscoelastic body 30, the second plate-like body 20, and the seal member 40) is preferably airtight. In this case, the heat insulating effect of the space S can be enhanced. The space S may also be filled with an inert gas. Examples of the inert gas include nitrogen gas, helium, argon, xenon, and krypton. In this case, deterioration of the viscoelastic body 30 due to the gas in the space S can be suppressed. For example, after the viscoelastic body 30 and the seal member 40 are installed between the first plate-like body 10 and the second plate-like body 20, the air in the space S may be replaced with the inert gas.

[0022] As shown in FIG. 4 , at least one of the first plate-shaped body 10 and the second plate-shaped body 20 is provided with a displacement suppression portion 50 that suppresses displacement of the sealing member 40. In this embodiment, the displacement suppression portion 50 is provided only on the second plate-shaped body 20 (one of the pair of plates). In this embodiment, the displacement suppression portion 50 is configured as a groove portion 22 formed on the plate surface 20a of the second plate-shaped body 20. When viewed from the arrangement direction Z, the groove portion 22 is provided so as to overlap the sealing member 40 (i.e., so as to follow the outer peripheral surface 30a of the viscoelastic body 30). When viewed from the arrangement direction Z, the groove portion 22 is provided in an annular shape so as to overlap the entire sealing member 40 (i.e., so as to follow the entire outer peripheral surface 30a of the viscoelastic body 30). Note that the groove portions 22 may be formed discretely as long as they can suppress displacement of the sealing member 40. Positioning the end of the sealing member 40 within the groove 22 prevents the sealing member 40 from shifting out of position. Furthermore, the first plate-shaped body 10 (the other of the pair of plate-shaped bodies) and the sealing member 40 are slidable. This prevents the sealing member 40 from interfering with the deformation of the viscoelastic body 30, ensuring the vibration damping performance of the viscoelastic damper 1. Note that the positional shift suppression section 50 may be provided only on the first plate-shaped body 10, and the second plate-shaped body 20 and the sealing member 40 may be slidable in position.

[0023] FIG. 5 is a cross-sectional view showing a displacement suppression unit 50 according to a first modified example of this embodiment. As shown in FIG. 5, the displacement suppression unit 50 may be configured with a protrusion 23 formed on the plate surface 20a of the second plate-shaped body 20. When viewed from the arrangement direction Z, the protrusion 23 is provided in an annular shape so as to overlap the entire sealing member 40 (i.e., so as to follow the entire outer peripheral surface 30a of the viscoelastic body 30). Note that the protrusion 23 may be formed discretely as long as it can suppress displacement of the sealing member 40. By embedding the protrusion 23 in the end of the sealing member 40, displacement of the sealing member 40 is suppressed. Note that a double annular protrusion 23 may be provided, and the end of the sealing member 40 may be disposed between the double annular protrusions 23.

[0024] Fig. 6 is a cross-sectional view showing a displacement suppression unit 50 according to a second modified example of this embodiment. As shown in Fig. 6, the displacement suppression unit 50 may be configured with a surface treatment unit 24 formed on the plate surface 20a of the second plate-like body 20. The surface treatment unit 24 is formed by roughening the plate surface 20a of the second plate-like body 20 by blasting or the like. The sealing member 40 is placed on the surface treatment unit 24. The frictional force between the sealing member 40 and the surface treatment unit 24 suppresses displacement of the sealing member 40.

[0025] FIG. 7 is a cross-sectional view showing a misalignment suppression unit 50 according to a third modified example of this embodiment. As shown in FIG. 7, the misalignment suppression unit 50 may be provided on each of the first plate-like body 10 and the second plate-like body 20. In the illustrated example, the misalignment suppression unit 50 provided on the first plate-like body 10 is configured as a groove 12 formed on the plate surface 10a of the first plate-like body 10, and the misalignment suppression unit 50 provided on the second plate-like body 20 is configured as a groove 22 formed on the plate surface 20a of the second plate-like body 20. The misalignment suppression unit 50 provided on the first plate-like body 10 may be configured as the protrusion or surface treatment unit described above. The misalignment suppression unit 50 provided on the first plate-like body 10 and the misalignment suppression unit 50 provided on the second plate-like body 20 may have different configurations.

[0026] Furthermore, when the misalignment suppression section 50 is provided on each of the first plate-like body 10 and the second plate-like body 20, the sealing member 40 is preferably formed so that the shear rigidity of the sealing member 40 is equal to or less than the shear rigidity of the viscoelastic body 30. This prevents the sealing member 40 from interfering with the deformation of the viscoelastic body 30, ensuring the vibration damping performance of the viscoelastic damper 1.

[0027] As described above, the viscoelastic damper 1 according to this embodiment includes a pair of plate-like bodies 10, 20, a viscoelastic body 30 disposed between the pair of plate-like bodies 10, 20, and a sealing member 40 that isolates the viscoelastic body 30 from the outside. The sealing member 40 is disposed between the pair of plate-like bodies 10, 20 at a position spaced apart from the outer peripheral surface 30a of the viscoelastic body 30. According to the above configuration, a space S is formed between the outer peripheral surface 30a of the viscoelastic body 30 and the sealing member 40, thereby obtaining an insulating effect, and therefore deterioration of the viscoelastic body 30 over time due to temperature changes in the installation environment of the viscoelastic damper 1 can be suppressed compared to, for example, a case where the sealing member is arranged in close contact with the outer peripheral surface of the viscoelastic body.

[0028] In addition, at least one of the pair of plate-like bodies 10, 20 is provided with a positional displacement suppression portion 50 that suppresses positional displacement of the sealing member 40. With this configuration, it is possible to suppress the sealing member 40 from shifting and coming into close contact with the viscoelastic body 30, and ensure the heat insulating effect of the space S between the outer peripheral surface 30a of the viscoelastic body 30 and the sealing member 40.

[0029] Moreover, the misalignment suppression portion 50 is provided on each of the pair of plate-like bodies 10, 20. With this configuration, misalignment of the seal member 40 can be suppressed more effectively.

[0030] Furthermore, the shear rigidity of the sealing member 40 is equal to or less than the shear rigidity of the viscoelastic body 30. With this configuration, the sealing member 40 is prevented from interfering with the deformation of the viscoelastic body 30, and the vibration damping performance of the viscoelastic damper 1 can be ensured.

[0031] Moreover, the misalignment suppression portion 50 is provided on only one of the pair of plate-like bodies 10, 20, and the other of the pair of plate-like bodies 10, 20 and the sealing member 40 are slidable. With this configuration, misalignment of the sealing member 40 can be suppressed by the misalignment suppression portion 50 provided on one of the pair of plate-like bodies 10, 20. Furthermore, since the other of the pair of plate-like bodies 10, 20 and the sealing member 40 are slidable, the sealing member 40 is prevented from interfering with the deformation of the viscoelastic body 30, and the vibration damping performance of the viscoelastic damper 1 can be ensured.

[0032] The displacement suppression section 50 is configured by a groove section 22 formed in the plate-like body 10 and / or 20. The displacement suppression portion 50 is configured by a protrusion 23 formed on the plate-like body 10 and / or 20. The displacement suppression section 50 is configured by the surface treatment section 24 formed on the plate-like body 10 and / or 20. According to the above configuration, the misalignment suppression section 50 can be formed with a simple structure.

[0033] Furthermore, the sealing member 40 is made of the same material as the viscoelastic body 30. With this configuration, the sealing member 40 can function as a vibration damping structure in the same way as the viscoelastic body 30, and the vibration damping performance of the viscoelastic damper 1 is improved.

[0034] Furthermore, an inert gas is filled in the space S between the sealing member 40 and the viscoelastic body 30. With this configuration, deterioration of the viscoelastic body 30 due to the gas in the space S between the sealing member 40 and the viscoelastic body 30 can be suppressed.

[0035] Moreover, the sealing member 40 is disposed at a position spaced apart from the viscoelastic body 30 around the entire outer peripheral surface 30a. With this configuration, the heat insulating effect of the space S between the outer peripheral surface 30a of the viscoelastic body 30 and the sealing member 40 can be improved.

[0036] Second Embodiment Next, a viscoelastic damper 1A according to a second embodiment of the present disclosure will be described. In this embodiment, the same components as those in the first embodiment will be denoted by the same reference numerals, and their description will be omitted, with only the differences being described.

[0037] Fig. 8 is a front view of the viscoelastic damper 1A. As shown in Fig. 8, in this embodiment, a pair of first seal portions 41 of the seal member 40 that face each other in the second direction Y are in close contact with the pair of first surfaces 31. A pair of second seal portions 42 of the seal member 40 that face each other in the first direction X are disposed at positions spaced apart from the pair of second surfaces 32. In other words, a space S is formed between the second surfaces 32 and the second seal portions 42.

[0038] As described above, in the viscoelastic damper 1A of this embodiment, the sealing member 40 is in close contact with the portions (first surfaces 31) of the outer peripheral surface 30a that face each other in the second direction Y. This configuration makes it possible to form the space S between the outer peripheral surface 30a of the viscoelastic body 30 and the sealing member 40 by utilizing the shapes of the plate-like bodies 10 and 20 necessary for attaching the viscoelastic damper 1A to an architectural structure, while reducing the size of the viscoelastic damper 1A in the second direction Y. More specifically, a first mounting portion 11 (mounting portion) is provided at a first end portion 10b located on one side in the first direction X of the first plate-like body 10, and a second mounting portion 21 (mounting portion) is provided at a second end portion 20c located on the other side in the first direction X of the second plate-like body 20. That is, the lengths of the plate-like bodies 10 and 20 in the first direction X are increased in order to attach the viscoelastic damper 1A to an architectural structure. In this embodiment, the sealing member 40 is disposed at a position away from the portion of the outer peripheral surface 30a that faces in the first direction X (second surface 32), thereby utilizing the shape of the plate-like bodies 10, 20 that are long in the first direction X to ensure the space S. On the other hand, by bringing the sealing member 40 into close contact with the portion of the outer peripheral surface 30a that faces in the second direction Y (first surface 31), the size of the viscoelastic damper 1A in the second direction Y can be reduced.

[0039] Third Embodiment Next, a viscoelastic damper 1B according to a third embodiment of the present disclosure will be described. In this embodiment, the same components as those in the first embodiment will be denoted by the same reference numerals, and their description will be omitted, with only the differences being described.

[0040] 9A and 9B are cross-sectional views of a viscoelastic damper 1B. As shown in Fig. 9A, in this embodiment, the viscoelastic body 30 and the sealing member 40 are disposed between a pair of connecting plates 61 and 62 and fixed to the pair of connecting plates 61 and 62. This forms an intermediate unit 60 that is composed of the viscoelastic body 30, the sealing member 40, and the pair of connecting plates 61 and 62.

[0041] 9(b), the intermediate unit 60 is disposed between the first plate-shaped body 10 and the second plate-shaped body 20. The connecting plate 61 is fixed to the first plate-shaped body 10, and the connecting plate 62 is fixed to the second plate-shaped body 20, thereby disposing the viscoelastic body 30 and the sealing member 40 between the first plate-shaped body 10 and the second plate-shaped body 20. According to this configuration, by forming the intermediate unit 60, the viscoelastic body 30 and the sealing member 40 can be easily disposed between the first plate-shaped body 10 and the second plate-shaped body 20.

[0042] The present disclosure is not limited to the above-described embodiment described with reference to the drawings, and various modifications are possible within the technical scope thereof.

[0043] For example, in the above embodiment, the viscoelastic body 30 may be formed in a circular shape or a polygonal shape other than a rectangle when viewed from the alignment direction Z, and the sealing member 40 may be formed in a circular ring shape or a frame shape of a polygonal shape other than a rectangle.

[0044] In the above embodiment, the displacement suppression unit 50 may be an adhesive, and the sealing member 40 may be adhered to the plate-like body 10 and / or 20 .

[0045] In the second embodiment, the seal member 40 may be in close contact with only one of the pair of first surfaces 31 and may be disposed at a position separated from the other.

[0046] In addition, within the scope of the present disclosure, the components in the above-described embodiments may be replaced with well-known components as appropriate, and the above-described modified examples may be combined as appropriate.

[0047] (Addendum) The viscoelastic damper according to the embodiment can be understood, for example, as follows. <1> A viscoelastic damper according to one aspect of the present disclosure is a viscoelastic damper comprising a pair of plate-shaped bodies, a viscoelastic body arranged between the pair of plate-shaped bodies, and a sealing member that isolates the viscoelastic body from the outside, wherein the sealing member is arranged between the pair of plate-shaped bodies at a position away from the outer peripheral surface of the viscoelastic body. According to the above configuration, a space is formed between the outer peripheral surface of the viscoelastic body and the sealing member, thereby providing an insulating effect, and therefore deterioration of the viscoelastic body over time due to temperature changes in the installation environment of the viscoelastic damper can be suppressed compared to, for example, a case where the sealing member is positioned in close contact with the outer peripheral surface of the viscoelastic body.

[0048] <2> the above <1> In the viscoelastic damper according to the above aspect, at least one of the pair of plate-shaped bodies may be provided with a positional displacement suppression portion that suppresses positional displacement of the sealing member. According to the above configuration, the seal member is prevented from shifting and coming into close contact with the viscoelastic body, and the heat insulating effect provided by the space between the outer peripheral surface of the viscoelastic body and the seal member can be ensured.

[0049] <3> the above <2> In the viscoelastic damper according to the above aspect, the displacement suppression portion may be provided on each of the pair of plate-shaped bodies. According to the above configuration, it is possible to more effectively prevent the seal member from being displaced.

[0050] <4> the above <3> In the viscoelastic damper according to the above aspect, the shear stiffness of the sealing member may be equal to or less than the shear stiffness of the viscoelastic body. According to the above configuration, the sealing member is prevented from hindering the deformation of the viscoelastic body, and the vibration damping performance of the viscoelastic damper can be ensured.

[0051] <5> the above <2> In the viscoelastic damper according to the above aspect, the displacement suppression portion may be provided on only one of the pair of plate-shaped bodies, and the other of the pair of plate-shaped bodies and the sealing member may be slidable relative to each other. According to the above configuration, the misalignment suppression portion provided on one of the pair of plate-like bodies can suppress misalignment of the sealing member. Furthermore, since the other of the pair of plate-like bodies and the sealing member are slidable, the sealing member is prevented from interfering with the deformation of the viscoelastic body, and the vibration-damping performance of the viscoelastic damper can be ensured.

[0052] <6> the above <2> from <5> In the viscoelastic damper according to any one of the above, the displacement suppression portion may be configured by a groove portion formed in the plate-like body. According to the above configuration, the misalignment suppression portion can be formed with a simple structure.

[0053] <7> the above <2> from <5> In the viscoelastic damper according to any one of the above, the displacement suppression portion may be configured by a protrusion formed on the plate-like body. According to the above configuration, the misalignment suppression portion can be formed with a simple structure.

[0054] <8> the above <2> from <5> In the viscoelastic damper according to any one of the above, the displacement suppression portion may be configured by a surface treatment portion formed on the plate-like body. According to the above configuration, the misalignment suppression portion can be formed with a simple structure.

[0055] <9> the above <1> from <8> In the viscoelastic damper according to any one of the above, the sealing member may be made of the same material as the viscoelastic body. According to the above configuration, the sealing member can function as a vibration-damping structure in the same way as a viscoelastic body, and the vibration-damping performance of the viscoelastic damper is improved.

[0056] <10> the above <1> from <9> In the viscoelastic damper according to any one of the above, a space between the sealing member and the viscoelastic body may be filled with an inert gas. According to the above configuration, it is possible to prevent the viscoelastic body from being deteriorated by gas in the space between the outer peripheral surface of the viscoelastic body and the seal member.

[0057] <11> the above <1> from <10> In the viscoelastic damper according to any one of the above, the sealing member may be arranged at a position spaced apart from the viscoelastic body around the entire circumference of the outer circumferential surface. According to the above configuration, the heat insulating effect of the space between the outer peripheral surface of the viscoelastic body and the seal member can be improved.

[0058] <12> the above <1> from <10> In the viscoelastic damper according to any one of the above, the pair of plate-like bodies and the viscoelastic body are formed in a rectangular shape when viewed in the arrangement direction of the pair of plate-like bodies, and a first end portion located on one side of the first direction among both ends opposing each other in the first direction of one of the plate-like bodies, and a second end portion located on the other side of the first direction among both ends opposing each other in the first direction of the other of the plate-like bodies, are each provided with an attachment portion for attachment to an installation location, and the sealing member may be in close contact with portions of the outer circumferential surface opposing each other in a second direction perpendicular to the first direction. According to the above configuration, the size of the viscoelastic damper in the second direction can be reduced while utilizing the shape of the plate-like body required to attach the viscoelastic damper to an architectural structure to form a space between the outer surface of the viscoelastic body and the sealing member. [Explanation of symbols]

[0059] 1, 1A, 1B Viscoelastic damper 10 First plate-shaped body 11 First mounting part (mounting part) 12 Groove 20 Second plate-shaped body 21 Second mounting part (mounting part) 22 Groove 23 Protrusion 24 Surface treatment section 30 Viscoelastic body 30a Outer surface 40 sealing material 50 Position shift prevention unit S space X 1st direction Y Second direction Z alignment direction

Claims

1. A viscoelastic damper comprising a pair of plate-like bodies, a viscoelastic body disposed between the pair of plate-like bodies, and a sealing member that isolates the viscoelastic body from the outside, the sealing member is disposed between the pair of plate-like bodies at a position spaced apart from an outer peripheral surface of the viscoelastic body, a positional deviation suppression portion that suppresses positional deviation of the sealing member is provided on at least one of the pair of plate-like bodies, The displacement suppression portion is configured as a groove portion formed in the plate-like body.

2. A viscoelastic damper comprising a pair of plate-like bodies, a viscoelastic body disposed between the pair of plate-like bodies, and a sealing member that isolates the viscoelastic body from the outside, the sealing member is disposed between the pair of plate-like bodies at a position spaced apart from an outer peripheral surface of the viscoelastic body, a positional deviation suppression portion that suppresses positional deviation of the sealing member is provided on at least one of the pair of plate-like bodies, The displacement suppression portion is configured by a protrusion formed on the plate-shaped body.

3. A viscoelastic damper comprising a pair of plate-like bodies, a viscoelastic body disposed between the pair of plate-like bodies, and a sealing member that isolates the viscoelastic body from the outside, the sealing member is disposed between the pair of plate-like bodies at a position spaced apart from an outer peripheral surface of the viscoelastic body, a positional deviation suppression portion that suppresses positional deviation of the sealing member is provided on at least one of the pair of plate-like bodies, The displacement suppression portion is configured by a surface treatment portion formed on the plate-shaped body.

4. 4. The viscoelastic damper according to claim 1, wherein the displacement suppression portion is provided on each of the pair of plate-like bodies.

5. The viscoelastic damper according to claim 4 , wherein the shear stiffness of the sealing member is equal to or less than the shear stiffness of the viscoelastic body.

6. A viscoelastic damper as described in any one of claims 1 to 3, wherein the positional deviation suppression portion is provided on only one of the pair of plate-shaped bodies, and the other of the pair of plate-shaped bodies and the sealing member are freely slidable.

7. 4. The viscoelastic damper according to claim 1, wherein the sealing member is made of the same material as the viscoelastic body.

8. 4. The viscoelastic damper according to claim 1, wherein a space between the sealing member and the viscoelastic body is filled with an inert gas.

9. 4. The viscoelastic damper according to claim 1, wherein the sealing member is disposed at a position spaced apart from the viscoelastic body around the entire circumference of the outer circumferential surface.

10. the pair of plate-like bodies and the viscoelastic body are formed in a rectangular shape when viewed in the arrangement direction of the pair of plate-like bodies, a first end portion located on one side in the first direction among both ends opposing each other in the first direction of one of the plate-like bodies, and a second end portion located on the other side in the first direction among both ends opposing each other in the first direction of the other of the plate-like bodies, each of which is provided with an attachment portion for attachment to an installation location; 4. The viscoelastic damper according to claim 1, wherein the sealing member is in close contact with portions of the outer circumferential surface that face each other in a second direction perpendicular to the first direction.

Images