Seismic isolation device and mounting structure of seismic isolation device

Abstract

To provide a highly versatile base isolation device capable of being mounted upside down.SOLUTION: A vibration isolation device 1 reduces at least one of vibration transmitted from a first object to a second object and vibration transmitted from the second object to the first object. The seismic isolation device 1 includes a housing 2, a slide member 3, first and second rotation mechanism groups 4 and 5, a connection portion 6, and a cover member 7. The housing 2 includes a first plate member side 2a, an opening H formed in the first plate member side 2a, and a second plate member side 2a located to face the first plate member side 2b. Slide member 3 has a first surface 2a facing the first plate member 3a and a second surface 2b facing the second plate member 3b, is stored in housing 2 and located between the first plate member 2a and the second plate member 2b, and is slidable along the first plate member 2a and the second plate member 2b inside housing 2. The first rotating mechanism group 4 and the second rotating mechanism 5 make the slide member 3 slidable.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a seismic isolation device and a building. [Background technology]

[0002] Patent Document 1 discloses a device that prevents lighting fixtures suspended from the ceiling from shaking during an earthquake. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-338519 Summary of the Invention [Problem to be solved by the invention]

[0004] The device in Patent Document 1 hangs a lighting fixture and supports a horizontally slidable movable part with a sphere from below, thereby preventing vibrations from the ceiling from being transmitted to the lighting fixture. However, the device in Patent Document 1 requires that the sphere be placed below the movable part that hangs the lighting fixture. As a result, the device in Patent Document 1 cannot be installed upside down, and there are restrictions on the orientation in which the device can be installed, resulting in poor versatility.

[0005] The object of the present invention is to provide a highly versatile seismic isolation device that can be installed upside down, and a building equipped with the seismic isolation device.

[0006] The seismic isolation device of the present invention comprises: A vibration isolation device that reduces at least one of vibrations transmitted from a first object to a second object or vibrations transmitted from the second object to a first object, a housing having a first plate-shaped member, an opening formed in the first plate-shaped member, and a second plate-shaped member positioned opposite the first plate-shaped member; a slide member having a first surface facing the first plate-shaped member and a second surface facing the second plate-shaped member, the slide member being housed in the housing and positioned between the first plate-shaped member and the second plate-shaped member, and being slidable along the first plate-shaped member and the second plate-shaped member inside the housing; a first rotation mechanism group having a plurality of first rotation mechanisms each having a first sphere that allows the slide member to slide and a first holder portion that rotatably holds the first sphere, and positioned between the first plate-shaped member and the first surface outside the opening; a second rotation mechanism group having a plurality of second rotation mechanisms each having a second spherical body that allows the slide member to slide and a second holder portion that rotatably holds the second spherical body, and positioned between the second plate-like member and the second surface; a connecting portion that is connected to the slide member, extends from the slide member through the opening to the outside of the housing, and connects to a first object located outside the housing; a cover member having a third plate-shaped member positioned outside the housing facing the second plate-shaped member, the third plate-shaped member covering at least a portion of the second plate-shaped member and attached to the housing so as to form a space between the third plate-shaped member and the second plate-shaped member, and capable of fixing a second object to the third plate-shaped member; Equipped with The first rotation mechanism group includes: a plurality of first holder parts are fixed to a first plate-shaped member outside the opening, and a plurality of first spheres in the first rotation mechanism group contact the first surface, or a plurality of first holder parts are fixed to the first surface, and a plurality of first spheres in the first rotation mechanism group contact the first plate-shaped member outside the opening, The second rotation mechanism group includes: A plurality of second holder parts are fixed to the second plate-shaped member, and a plurality of second spheres in the second rotation mechanism group contact the second surface, or a plurality of second holder parts are fixed to the second surface, and a plurality of second spheres in the second rotation mechanism group contact the second plate-shaped member.

[0007] For example, when the first object vibrates when the first rotation mechanism group is disposed above the second rotation mechanism group and the connection portion is fixed to the first object located above, and the cover member is fixed to the second object located below, the sliding member vibrates through the connection portion, reducing vibration to the housing that stores the sliding member and reducing vibration to the second object that is fixed to the cover member attached to the housing. Furthermore, when the second object vibrates when the second rotation mechanism group is disposed above the first rotation mechanism group and the connection portion is fixed to the first object located below, and the cover member is fixed to the second object located above, the housing attached to the cover member vibrates through the cover member, reducing vibration to the sliding member stored in the housing and reducing vibration to the first object connected to the sliding member through the connection portion. Therefore, the seismic isolation device of the present invention can be installed upside down and is highly versatile.

[0008] In an embodiment of the present invention, An elastic member may be provided to bias the slide member toward its initial position inside the housing.

[0009] With this, even if the sliding member is moved by some accident such as an earthquake, it can be returned to its initial position by the elastic member.

[0010] In an embodiment of the present invention, The elastic member is a first elastic member having a coil spring member having one end and the other end, the one end side being connected to the slide member and the other end being connected to the housing, thereby connecting the slide member and the housing and biasing the slide member toward an initial position; a second elastic member having a curved leaf spring member with one end and the other end, the one end side being connected to the slide member and the other end side being connected to the housing, thereby connecting the slide member and the housing and biasing the slide member toward the initial position; may also be provided.

[0011] This allows the sliding member to be returned to its initial position by two types of elastic members: a first elastic member having a coil spring member and a second elastic member having a leaf spring member. By using two types of elastic members, if an excessive restoring force that exceeds the initial position acts when returning the sliding member to its initial position by one elastic member, the excessive restoring force can be buffered by the other elastic member.

[0012] In an embodiment of the present invention, a third elastic member positioned between the cover member and the second plate-shaped member; The cover member may be attached to the housing with a third elastic member sandwiched between the cover member and the second plate-shaped member.

[0013] With this, when vibration is applied in a direction that is transmitted from the cover member to the housing or from the housing to the cover member, the third elastic member can absorb such vibration.

[0014] In an embodiment of the present invention, The connection part is a rod-shaped member having one end fixed to the slide member and the other end connected to the first object; a spring member inserted into the rod-shaped member; a holding portion that holds the spring member and the rod-shaped member together in a state in which the spring member is pressed against the slide member; may also be provided.

[0015] With this, when vibration is applied in a direction that is transmitted from the connecting portion to the sliding member or from the sliding member to the connecting portion, such vibration can be absorbed by the spring member.

[0016] In addition, the building of the present invention is an H-shaped steel beam having a first flange portion extending horizontally or approximately horizontally, a second flange portion facing the first flange portion and positioned below the first flange portion, and a web portion connecting the first flange portion and the second flange portion, the H-shaped steel beam serving as a beam in the upper part of the building skeleton; a pair of plate-like members extending downward from the web portion side of the upper surface of the second flange portion along the surface of the second flange portion, from the upper surface of the second flange portion to the side surface, around to the back surface, and then; a fastening member that penetrates the pair of plate-like members and can be fastened to the pair of plate-like members; a connecting member that is a second object connected to the pair of plate-like members and connected and fixed to the cover member; the seismic isolation device in which the cover member is fixed to the connecting member; Equipped with.

[0017] In the building of the present invention, it is possible to firmly fix a pair of plate-like members to the H-shaped steel beams that form the upper beams of the building's skeleton. Then, it is possible to fix a seismic isolation device to the firmly fixed pair of plate-like members via a connecting member. Therefore, it is possible to provide a building with a seismic isolation device firmly fixed.

[0018] In an embodiment of the present invention, A lattice-shaped grape trellis may be provided and supported on the upper part of the main body.

[0019] This will improve the earthquake resistance of the building. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a schematic front view showing an example of a seismic isolation device according to the present invention. [Figure 2] FIG. 2 is a schematic front view showing an example of the seismic isolation device of FIG. 1 in an attached state. [Figure 3] 2 is a schematic front view showing an example of the seismic isolation device of FIG. 1 installed upside down. [Figure 4] 2 is a schematic front view of the seismic isolation device of FIG. 1. [Figure 5] 5 is a schematic plan view showing the positional relationship of each component within the housing of the seismic isolation device, with the second plate-shaped component, second rotation mechanism group, connection portion, cover component, etc., omitted from the seismic isolation device of FIG. 4. [Figure 6] Schematic left side view of Figure 1. [Figure 7]1 is a schematic diagram showing an example of a building of the present invention. [Figure 8] FIG. 2 is a schematic front view showing a first modified example of the seismic isolation device of the present invention. [Figure 9] FIG. 10 is a schematic front view showing a second modified example of the seismic isolation device of the present invention. [Figure 10] FIG. 10 is a schematic front view showing a third modified example of the seismic isolation device of the present invention. [Figure 11] FIG. 10 is a schematic front view showing a fourth modified example of the seismic isolation device of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] FIG. 1 is a schematic front view showing a seismic isolation device 1 according to an example of the present invention. The seismic isolation device 1 is attached so as to be suspended from a beam B located at the top of the skeleton of a building, for example, as shown in FIG. 2. A ceiling material C is attached to the suspended seismic isolation device 1 of FIG. 2. The seismic isolation device 1 of FIG. 2 reduces vibrations transmitted from the building (beam B) to the ceiling material C, etc., due to an earthquake or the like. Furthermore, if the seismic isolation device 1 attached as shown in FIG. 2 is turned upside down, the seismic isolation device 1 is attached to a member suspended from a beam B located at the top of the skeleton of the building, as shown in FIG. 3, for example. A suspended facility F, such as a lighting fixture, is attached to the suspended seismic isolation device 1 of FIG. 3. The seismic isolation device 1 of FIG. 3 reduces vibrations transmitted from the building (beam B) to the suspended facility F, due to an earthquake or the like.

[0022] Returning to Figure 1, the seismic isolation device 1 comprises a housing 2, a slide member 3 stored in the housing 2, a first rotation mechanism group 4 and a second rotation mechanism group 5 that slide the slide member 3, a connection part 6 that connects to the slide member 3, a cover member 7 that covers at least a part of the housing 2, a coil spring member 8 that connects the housing 2 and the slide member 3, a leaf spring member 9 that connects the housing 2 and the slide member 3, and a coil spring member 10 that is positioned between the housing 2 and the cover member 7.

[0023] The housing 2 is formed in a cylindrical shape with a rectangular cross section. The housing 2 includes a first plate-shaped member 2a, a second plate-shaped member 2b positioned opposite the first plate-shaped member 2a, and a third plate-shaped member 2c and a fourth plate-shaped member 2d connecting the first plate-shaped member 2a and the second plate-shaped member 2b. The cylindrical housing 2 also includes rectangular openings 2e on both sides.

[0024] The first plate-shaped member 2a, which constitutes part of the housing 2, is formed in the shape of a rectangular plate with flat front and back surfaces. FIG. 4 shows a schematic plan view of the seismic isolation device 1. FIG. 5 shows a schematic plan view of the seismic isolation device 1 of FIG. 4, omitting the second plate-shaped member 2b, the second rotation mechanism group 5, the connection portion 6, and the cover member 7. FIG. 6 shows a schematic side view of the seismic isolation device 1. As shown in FIG. 5, a circular opening H (through hole) is formed in the center of the first plate-shaped member 2a, penetrating from the front surface to the back surface of the first plate-shaped member 2a. Returning to FIG. 1, the second plate-shaped member 2b, which faces the first plate-shaped member 2a, is formed in the shape of a rectangular plate with flat front and back surfaces. The third plate-shaped member 2c and the fourth plate-shaped member 2d are connected to the second plate-shaped member 2b. The third plate-shaped member 2c and the fourth plate-shaped member 2d are formed as L-shaped plates. The third plate-shaped member 2c has a first plate 2c1 connected to the second plate-shaped member 2b and a second plate 2c2 facing the second plate-shaped member 2b. The fourth plate-shaped member 2d has a first plate 2d1 connected to the second plate-shaped member 2b and a second plate 2d2 facing the second plate-shaped member 2b. The second plate-shaped member 2b, the third plate-shaped member 2c, and the fourth plate-shaped member 2d are integrally formed as a plate member P (e.g., a lip channel steel) having a substantially C-shaped cross section. The second plate 2c2 and the second plate 2d2 are positioned on the same plane or approximately on the same plane. When the first plate-shaped member 2a is inserted inside the substantially C-shaped plate member P, one end side is supported by the second plate 2c2 and the other end side is supported by the second plate 2d2. The first plate-shaped member 2a and the second plate 2c2 are fixed to each other by fastening members FM such as bolts and nuts. The first plate-shaped member 2a and the second plate 2d2 are similarly fixed to each other by fastening members FM. With the first plate-shaped member 2a and the plate member P fixed, the first plate-shaped member 2a and the second plate-shaped member 2b are positioned parallel or approximately parallel to each other. A rectangular parallelepiped space is formed inside the housing 2.

[0025] A sliding member 3 is stored inside the housing 2. The sliding member 3 is formed as a disk-shaped plate with flat front and back surfaces. The sliding member 3 is located between the first plate-shaped member 2a and the second plate-shaped member 2b. The sliding member 3 has a first surface 3a facing the first plate-shaped member 2a and a second surface 3b facing the second plate-shaped member 2b. The sliding member 3 is slidable horizontally or approximately horizontally along the first plate-shaped member 2a and the second plate-shaped member 2b inside the housing 2 by the first rotation mechanism group 4 and the second rotation mechanism group 5. The initial position of the sliding member 3 shown in FIG. 5 is a position where the center of the first plate-shaped member 2a and the center O of the sliding member 3 overlap. The sliding member 3 in FIG. 1 is also located in its initial position. In FIG. 1, the sliding member 3 is movable horizontally or approximately horizontally from its initial position.

[0026] A first rotation mechanism group 4 that enables the sliding member 3 to slide is provided on the lower side of the interior of the housing 2. As shown in FIG. 5, the first rotation mechanism group 4 located on the lower side of the sliding member 3 is configured as multiple (six) first rotation mechanisms 4a. The first rotation mechanisms 4a are configured as, for example, well-known ball casters that enable the sliding member 3 to slide on a horizontal or approximately horizontal plane. The first rotation mechanism 4a includes a first spherical body 4a1 that enables the sliding member 3 to slide and a first holder portion 4a2 that rotatably holds the first spherical body 4a1. The first holder portion 4a2 is configured as a casing that houses the first spherical body 4a1 and holds the first spherical body 4a1 rotatably in all directions. The first holder portion 4a2 has an opening H1. The first spherical body 4a1 is rotatably held by the first holder portion 4a2 with a portion of the first spherical body 4a1 protruding from the opening H1 to the outside of the first holder portion 4a2. In FIG. 5, the first rotation mechanisms 4a are arranged outside the opening H of the first plate-shaped member 2a, at equal intervals on a concentric circle centered on the opening H. Returning to FIG. 1, the first rotation mechanisms 4a are located between the first plate-shaped member 2a and the first surface 3a of the slide member 3. In the first rotation mechanism 4a, first spheres 4a1 protruding from the opening H1 of the first holder portion 4a2 contact the first surface 3a of the slide member 3, while the first holder portion 4a2 is fixed to the first plate-shaped member 2a using a fixing member FM1. The fixing member FM1 is configured as, for example, a bolt and nut, and the first holder portion 4a2 is fixed to the first plate-shaped member 2a by inserting the bolt into fixing holes (not shown) formed in the first plate-shaped member 2a and the first holder portion 4a2 and then attaching the nut. As shown in Figure 1, the multiple first rotation mechanisms 4a fixed to the first plate-shaped member 2a have multiple first spherical bodies 4a1 arranged horizontally or approximately horizontally with the same height, and the multiple first spherical bodies 4a1 come into contact with the slide member 3 to hold it.

[0027] The upper interior of the housing 2 is provided with a second rotation mechanism group 5 that allows the sliding member 3 to slide. The second rotation mechanism group 5 is configured as a plurality (six) of second rotation mechanisms 5a. The second rotation mechanisms 5a are configured as, for example, well-known ball casters that allow the sliding member 3 to slide on a horizontal or approximately horizontal plane. The second rotation mechanism 5a includes a second spherical body 5a1 that allows the sliding member 3 to slide, and a second holder portion 5a2 that rotatably holds the second spherical body 5a1. The second holder portion 5a2 is configured as a casing that houses the second spherical body 5a1 and holds the second spherical body 5a1 rotatably in all directions. The second holder portion 5a2 has an opening H2. The second spherical body 5a1 is rotatably held by the second holder portion 5a2 with a portion of the second spherical body 5a1 protruding from the opening H2 to the outside of the second holder portion 5a2. Each member of the second rotation mechanism 5a is configured similarly to, for example, the first rotation mechanism 4a. Each second rotation mechanism 5a is positioned opposite a corresponding first rotation mechanism 4a with the slide member 3 sandwiched therebetween. Although not shown in the figure, the second rotation mechanisms 5a are arranged concentrically at equal intervals, similar to the first rotation mechanisms 4a. Each second rotation mechanism 5a is positioned between the second plate-shaped member 2b and the second surface 3b of the slide member 3. In the second rotation mechanism 5a, a second sphere 5a1 protruding from an opening H2 of the second holder portion 5a2 contacts the second surface 3b of the slide member 3, while the second holder portion 5a2 is fixed to the second plate-shaped member 2b using a fixing member FM2. The fixing member FM2 is configured as, for example, a bolt and nut, and the second holder portion 5a2 is fixed to the second plate-shaped member 2b by inserting the bolt into a fixing hole (not shown) formed in the second plate-shaped member 2b and the second holder portion 5a2 and then attaching the nut. The second rotation mechanisms 5a fixed to the second plate-shaped member 2b are arranged such that the second spherical bodies 5a1 are aligned at the same height and are horizontally or approximately horizontally, and the second spherical bodies 5a1 come into contact with the slide member 3 so as to hold it.

[0028] A connecting portion 6 is attached to the sliding member 3 inside the housing 2. The connecting portion 6 extends linearly from the sliding member 3 side to the outside of the housing 2 through an opening H (FIG. 5) in the first plate-shaped member 2a. The connecting portion 6 includes a rod-shaped member 6a that is attached by penetrating the center of the sliding member 3 and extends linearly to the outside of the housing 2, a spring member 6b inserted into the rod-shaped member 6a, and a holding portion 6c that holds the spring member 6b and the rod-shaped member 6a together while pressing the spring member 6b against the sliding member 3. One end of the rod-shaped member 6a is fixed to the sliding member 3, and the other end is attached to a hanging device F such as a lighting fixture (FIG. 3). For example, a cut bolt is used as the rod-shaped member 6a. For example, a coil spring is used as the spring member 6b. For example, a washer and a nut are used as the holding portion 6c. Although not shown in the figure, a rod-shaped member 6a is inserted into a through-hole formed in the center of the slide member 3, and then two spring members 6b are inserted into the rod-shaped member 6a so as to sandwich the slide member 3. With both sides of the slide member 3 sandwiched between the spring members 6b, the spring members 6b and the rod-shaped members 6a are held together by the holding portions 6c with the spring members 6b pressed against the slide member 3. The slide member 3 and the connection portion 6 are fixed together by the holding portions 6c.

[0029] On the outside of the housing 2, a cover member 7 is attached to the housing 2 from above. As shown in FIG. 1 , the cover member 7 is configured as a flat plate having a recess. The cover member 7 has a flat end portion 7a, a flat other end portion 7b, and a recess portion 7c connecting the one end portion 7a and the other end portion 7b. The recess portion 7c has a flat bottom surface 7c1 that serves as the bottom of the cover member 7. The bottom surface 7c1 of the cover member 7 faces the second plate-shaped member 2b on the outside of the housing 2, and the bottom surface 7c1 covers at least a portion of the second plate-shaped member 2b. The cover member 7 is attached to the housing 2 so as to form a space S between it and the second plate-shaped member 2b. A coil spring member 10 is positioned between the cover member 7 and the housing 2, and the cover member 7 is attached to the housing 2 with the coil spring member 10 sandwiched between the cover member 7 and the housing 2. Specifically, a bolt B1 is inserted into fixing holes (not shown) formed in one end 7a, the other end 7b, and the second plate-like member 2b, a washer W1 is inserted into the bolt B1, and a nut N1 is attached, so that the cover member 7 is attached to the housing 2 with the coil spring member 10 sandwiched between the cover member 7 and the housing 2. In FIG. 3, a square pipe SP is fixed to the bottom surface 7c1 of the recess 7c, and the seismic isolation device 1 is attached to a beam B located at the top of the building's skeleton through the square pipe SP.

[0030] Returning to FIG. 1, a coil spring member 8 is located inside the housing 2, connecting the housing 2 and the slide member 3. The coil spring member 8 includes a spirally formed coil spring 8a having one end and the other end, an eyebolt 8b to which one end of the coil spring 8a is fixed, and a fixing member FM3 to which the other end of the coil spring 8a is fixed. As shown in FIG. 5, the eyebolt 8b has a ring portion 8b1 and a bolt portion 8b2. Two eyebolts 8b are attached to each of the third plate-shaped member 2c and the fourth plate-shaped member 2d by the bolt portions 8b2. One end of the coil spring 8a is fixed to the ring portion 8b1 of the eyebolt 8b. Returning to FIG. 1, the fixing member FM3 includes a bolt B2, a washer W2, and a nut N2. After inserting a bolt B2 into a fixing hole (not shown) formed in the slide member 3, a washer W2 is inserted into the bolt B2 and nuts N2 are attached to both sides of the bolt B2, so that the other end of the coil spring 8a is sandwiched between the slide member 3, the nut N and the washer, thereby fixing the coil spring 8a to the slide member 3. As shown in Fig. 5, four coil spring members 8 are attached at equal intervals on the inner periphery of the disc-shaped slide member 3. The four coil spring members 8 are arranged along the radial direction of the disc-shaped slide member 3.

[0031] Leaf spring members 9 are located inside the housing 2, connecting the housing 2 and the slide member 3. The leaf spring members 9 are curved plate-shaped leaf springs having one end and the other end. One end is fixed to the housing 2 by being sandwiched between the bolt portion 8b2 of the eyebolt 8b and the third plate member 2c, and between the bolt portion 8b2 and the fourth plate member 2d. The other end is fixed to the slide member 3 via the fixing member FM3 by being wrapped around the bolt B2. As shown in FIG. 5, four leaf spring members 9 are attached to the inner periphery of the disk-shaped slide member 3, and the leaf spring members 9b are arranged so as to describe an arc from the bolt B2 toward the bolt portion 8b2.

[0032] The sliding member 3 is biased toward the initial position by a coil spring member 8 and a leaf spring member 9 that connect the housing 2 and the sliding member 3. The sliding member 3 is positioned by the coil spring member 8 and the leaf spring member 9 at the initial position where the center of the first plate-shaped member 2a and the center O of the sliding member 3 overlap in FIG.

[0033] Returning to FIG. 1 , a coil spring member 10 is attached between the housing 2 and the cover member 7. The coil spring member 10 is attached to the housing 2 in a state where it is inserted into a bolt B1 and sandwiched between the cover member 7 and the housing 2. The coil spring members 10 are attached to each of the four corners of the cover member 7. The coil spring member 10 is attached between the housing 2 and the cover member 7 in such a way that the coil spring member 10 is in a natural length state, for example, so that it can absorb vibrations from the vertical direction (for example, vibrations transmitted from the cover member 7 or vibrations transmitted from the connection portion 6) and compresses in response to vibrations from the vertical direction to absorb the vibrations.

[0034] The main components of the seismic isolation device 1 have been described above. Next, a method of using the seismic isolation device 1 will be described. For example, as shown in FIG. 3, the seismic isolation device 1 is attached to a member suspended from a beam B located at the top of a building's frame. The beam B in FIG. 3 is, for example, an H-beam 11. The H-beam 11 has a first flange portion 11a extending horizontally or approximately horizontally, a second flange portion 11b facing the first flange portion 11a and located below the first flange portion 11a, also extending horizontally or approximately horizontally, and a web portion 11c connecting the first flange portion 11a and the second flange portion 11b. A pair of plate-like members 12 are attached to the lower part of the H-beam 11. The pair of plate-like members 12 are configured as a pair of plate members extending downward from the web portion 11c side of the upper surface of the second flange portion 11b, along the surface of the second flange portion 11b, from the upper surface 11b1 of the second flange portion 11b, across the side surface 11b2, around to the back surface 11b3, and then downward. Fastening members 13 are attached to the pair of plate-like members 12, penetrating the pair of plate-like members 12 and capable of fastening to the pair of plate-like members 12. Square pipes SP are fixed to the pair of plate-like members 12, and the square pipes SP are fixed to the bottom surface 7c1 of the cover member 7, thereby attaching the seismic isolation device 1 to a building. A hanging fixture F, such as a lighting fixture, is attached to the connection portion 6 of the seismic isolation device 1 attached to the building. Depending on the purpose of the seismic isolation device 1 and the structure of the building to which the seismic isolation device 1 is attached, the seismic isolation device 1 in FIG. 3 is turned upside down, and as shown in FIG. 2, the connection portion 6 is connected to a beam B located at the top of the building's frame, while a rectangular plate-shaped ceiling material C is attached to the bottom surface 7c1 of the cover member 7. For example, a cassette air conditioner AC is attached to the ceiling material C, and the cassette air conditioner AC is suspended from the top of the building with the seismic isolation device 1 sandwiched between them. As shown in FIG. 7, a lattice-shaped grape trellis GS is provided on the upper part of the building frame to which the seismic isolation device 1 is attached, and is supported from above.

[0035] For example, in FIG. 2 , the seismic isolation device 1 is attached to a building with the first rotation mechanism group 4 disposed above the second rotation mechanism group 5, the connection portion 6 fixed to the beam B located above, and the cover member 7 fixed to the ceiling material C located below. When the building to which the seismic isolation device 1 is attached vibrates due to an earthquake or other cause, the vibrations from the building are transmitted to the connection portion 6 through the beam B. Here, the connection portion 6 is fixed to the sliding member 3 by the holding portion 6c, so the sliding member 3 also vibrates through the connection portion 6. The sliding member 3 is held by being sandwiched from above and below between a plurality of first spheres 4a1 arranged horizontally or approximately horizontally and a plurality of second spheres 5a1 arranged horizontally or approximately horizontally. Therefore, when lateral vibrations from the building are transmitted to the sliding member 3, the sliding member 3 slides horizontally or approximately horizontally. On the other hand, when the sliding member 3 slides, the first spheres 4a1 and the second spheres 5a1 that sandwich the sliding member 3 rotate while being held by the respective holder parts (first holder part 4a2, second holder part 5a2), thereby reducing the vibration of the sliding member 3 from being transmitted to the housing 2, and also reducing vibration to the ceiling material C fixed to the cover member 7 attached to the housing 2 and to the cassette air conditioner AC suspended from the ceiling material C. Similarly, if vibration occurs from the cassette air conditioner AC side, the vibration is reduced from being transmitted to the building.

[0036] Similarly, in FIG. 3 , the seismic isolation device 1 is attached to a building with the second rotation mechanism group 5 positioned above the first rotation mechanism group 4, the connection portion 6 fixed to a suspended fixture F such as a lighting fixture located below, and the cover member 7 fixed to a square pipe SP located above. When a building to which the seismic isolation device 1 is attached is shaken by an earthquake or other event, the shaking from the building is transmitted to the cover member 7 through the square pipe SP. Here, the cover member 7 is fixed to the housing 2 with bolts B1 or the like, and the housing 2 shakes through the cover member 7. Here, the multiple first spheres 4a1 of the first rotation mechanism group 4 attached integrally to the housing 2 and the multiple second spheres 5a1 of the second rotation mechanism group 5 attached integrally to the housing 2 are positioned so as to sandwich and hold the slide member 3 from above and below. Therefore, when lateral shaking from the building is transmitted to the housing 2, the housing 2 shakes horizontally or approximately horizontally. When the housing 2 shakes, the first rotation mechanism group 4 and the second rotation mechanism group 5 also shake along with the housing 2, but the multiple first spheres 4a1 of the first rotation mechanism group 4 and the multiple second spheres 5a1 of the second rotation mechanism group 5, which sandwich the slide member 3, rotate while sliding on the surface of the slide member 3 while being held by the respective holder parts (first holder part 4a2, second holder part 5a2), thereby reducing the transmission of the shaking on the housing 2 side to the slide member 3 side, and also reducing the shaking to the connection part 6 connected to the slide member 3 and the hanging equipment F fixed to the connection part 6. Similarly, if shaking occurs from the hanging equipment F, the transmission of that shaking to the building is reduced.

[0037] When the slide member 3 moves horizontally or approximately horizontally from its initial position due to lateral shaking caused by an earthquake, the horizontal or approximately horizontal movement is absorbed by the coil spring member 8 and leaf spring member 9 that bias the slide member 3 back to its initial position as shown in Figure 5, and the slide member 3 eventually returns to its initial position due to the restoring forces of the coil spring member 8 and leaf spring member 9. Here, as shown in Figure 5, the coil spring member 8 is arranged in a straight line, and the leaf spring members 9 are arranged in an arc shape so as to connect to both ends of the coil spring member 8. Therefore, any shaking of the slide member 3 that cannot be absorbed by the coil spring member 8 is absorbed by the leaf spring member 9. The same is true vice versa.

[0038] When vertical shaking occurs as a result of shaking from the building, the vertical shaking is absorbed by the coil spring member 10 located between the housing 2 and the cover member 7 as shown in Fig. 1, and also by the spring members 6b located so as to sandwich both sides of the slide member 3. Therefore, shaking of the ceiling material C and the cassette type air conditioner AC is reduced in Fig. 2, and shaking of the hanging equipment F is reduced in Fig. 3.

[0039] As shown in Figs. 2 and 3, the seismic isolation device 1 can be installed upside down, thereby increasing versatility.

[0040] As shown in Figure 5, the seismic isolation device 1 has a coil spring member 8 and a leaf spring member 9 that bias the slide member 3 toward its initial position inside the housing 2. Therefore, even if the slide member 3 moves horizontally or approximately horizontally due to some event such as an earthquake, it can be returned to its initial position by the coil spring member 8 and the leaf spring member 9. By using two types of elastic members, the coil spring member 8 and the leaf spring member 9, if an excessive restoring force that exceeds the initial position acts when one elastic member is used to return the slide member 3 toward its initial position, it is possible to buffer the excessive restoring force by the other elastic member.

[0041] 1, in the seismic isolation device 1, the cover member 7 is attached to the housing 2 with the coil spring member 10 sandwiched between the cover member 7 and the second plate-shaped member 2b. Therefore, when vibration is applied in a direction transmitted from the cover member 7 to the housing 2 or from the housing 2 to the cover member 7, the coil spring member 10 can absorb such vibration.

[0042] Furthermore, the connection part 6 includes a rod-shaped member 6a having one end fixed to the slide member 3, a spring member 6b inserted into the rod-shaped member 6a, and a holding part 6c that holds the spring member 6b and the rod-shaped member 6a together while pressing the spring member 6b against the slide member 3. Therefore, when vibration is applied in a direction that is transmitted from the connection part 6 to the slide member 3 or from the slide member 3 to the connection part 6, the spring member 6b can absorb such vibration.

[0043] As shown in FIG. 3 , in a building to which a seismic isolation device 1 is attached, a pair of plate-like members 12 are attached to the lower part of an H-beam 11, which serves as a beam B. The pair of plate-like members 12 extend downward from the web portion 11c side of the upper surface 11b1 of the second flange portion 11b of the H-beam 11, along the surface of the second flange portion 11b, from the upper surface 11b1 of the second flange portion 11b to the side surface 11b2, around to the back surface 11b3, and then through the pair of plate-like members 12. Fastening members 13 are attached to the pair of plate-like members 12, penetrating the pair of plate-like members 12. This allows the pair of plate-like members 12 to be firmly fixed to the H-beam 11. Square pipes SP are then fixed to the pair of plate-like members 12, and the seismic isolation device 1 is attached through the square pipes SP. This allows the seismic isolation device 1 to be firmly fixed to the building. Furthermore, in a building to which a seismic isolation device 1 is attached, as shown in FIG. 7 , a grape trellis GS is provided to support the upper part of the building's frame, thereby enhancing the building's earthquake resistance.

[0044] Here, the correspondence between this embodiment and the wording in the claims will be explained. The seismic isolation device 1 of this embodiment corresponds to the "seismic isolation device." The housing 2 corresponds to the "housing," the first plate-shaped member 2a corresponds to the "first plate-shaped member," and the second plate-shaped member 2b corresponds to the "second plate-shaped member." The slide member 3 corresponds to the "slide member," the first surface 3a corresponds to the "first surface," and the second surface 3b corresponds to the "second surface." The first rotation mechanism group 4 corresponds to the "first rotation mechanism group," the first rotation mechanism 4a corresponds to the "first rotation mechanism," the first spherical body 4a1 corresponds to the "first spherical body," and the first holder part 4a2 corresponds to the "first holder part." The second rotation mechanism group 5 corresponds to the "second rotation mechanism group," the second rotation mechanism 5a corresponds to the "second rotation mechanism," the second spherical body 5a1 corresponds to the "second spherical body," and the second holder part 5a2 corresponds to the "second holder part." The connection part 6 corresponds to the connection part. The cover member 7 corresponds to the "cover member," and the bottom surface 7c1 corresponds to the "third plate-like member." Note that the housing does not necessarily have to be a closed container as long as it can accommodate each member, such as the slide member. The third plate-like member does not necessarily have to be a flat plate, but may also be a curved plate.

[0045] With regard to claim 3, the coil spring member 8 and the leaf spring member 9 correspond to the "elastic member." With regard to claim 4, the coil spring member 8 corresponds to the "first elastic member." The leaf spring member 9 corresponds to the "second elastic member." With regard to claim 5, the coil spring member 10 corresponds to the "third elastic member." With regard to claim 6, the rod-shaped member 6a corresponds to the "rod-shaped member," the spring member 6b corresponds to the "spring member," and the retaining portion 6c corresponds to the "retaining portion." With regard to claim 7, the H-beam 11 corresponds to the "H-beam," the pair of plate-shaped members 12 correspond to the "pair of plate-shaped members," the fastening member 13 corresponds to the "fastening member," and the square pipe SP corresponds to the "connecting member." With regard to claim 8, the grape trellis GS corresponds to the "grape trellis." Note that, although the coil spring member 8 and the leaf spring member 9 are given as examples of elastic members, various members other than coil springs and leaf springs can be used.

[0046] The above describes the embodiments of the present invention, but the present invention is not limited to the specific descriptions, and it is possible to implement the present invention by appropriately combining the exemplified configurations, etc. within a range that is not technically inconsistent, and it is also possible to implement the present invention by replacing certain elements and processes with well-known forms.

[0047] While a disk-shaped plate has been exemplified as the slide member 3 above, as shown in FIG. 8, two disk-shaped plates may be arranged facing each other with a gap therebetween and secured with a bolt B2. In this case, for example, a coil spring member 8 and a leaf spring member 9 may be wound around the center of the bolt B2. Connecting the coil spring member 8 and the leaf spring member 9 to the center of the bolt facilitates horizontal or substantially horizontal sliding of the slide member 3. Alternatively, a hanging bolt B3 or the like may be secured to the cover member 7 instead of the square pipe SP, and a hanging fixture F (not shown in FIG. 8) or the like may be hung from the cover member 7. Furthermore, in addition to the coil spring member 10 sandwiched between the cover member 7 and the housing 2, a coil spring member 14 may be provided to sandwich the cover member 7 between the coil spring member 10. This allows for more effective absorption of vertical vibration.

[0048] While Fig. 1 shows an example in which the upper portions of first spheres 4a1 and the lower portions of second spheres 5a1 contact slide member 3, as shown in Fig. 8, the upper portions of first spheres 4a1 may contact first plate-like member 2a, and the upper portions of second spheres 5a1 may contact slide member 3. Alternatively, as shown in Fig. 9, the lower portions of first spheres 4a1 may contact slide member 3, and the lower portions of second spheres 5a1 may contact plate-like member 2b. Note that coil spring member 8, plate spring member 9, etc. are omitted from Fig. 9.

[0049] The sliding member is not limited to those shown in FIGS. 1 and 8 , and any configuration capable of horizontal or nearly horizontal sliding movement can be employed. When using a sliding member such as that shown in FIG. 8 , the orientation of the first rotation mechanism group 4 and the second rotation mechanism group 5 may be appropriately changed as shown in FIGS. 9 , 10 , and 11 . The opening H is set large enough so that the connection portion 6 does not come into contact with the inner periphery of the opening H when the sliding member 3 moves. For example, the diameter and shape of the opening H may be determined by calculating the distance the connection portion 6 will move based on the seismic intensity of an earthquake. The coil spring member 8 and the leaf spring member 9 shown in FIG. 1 may not be provided. In this case, a cushioning member may be provided on the outer periphery of the disk-shaped sliding member 3 to cushion the impact when the housing 2 and the sliding member 3 come into contact. The coil spring member 8 and the leaf spring member 9 are omitted from FIGS. 10 and 11 .

[0050] While Fig. 5 shows an example in which six first rotation mechanisms 4a are arranged, the number of first rotation mechanisms 4a may be six or less. The same applies to the second rotation mechanisms 5a. Also, although an example in which the first rotation mechanisms 4a and the second rotation mechanisms 5a are positioned on the same straight line in the vertical direction is shown, they do not necessarily have to be positioned on the same straight line. Also, the number of first rotation mechanisms 4a and the number of second rotation mechanisms 5a may differ. [Explanation of symbols]

[0051] 1 Seismic isolation device 2. Case 3 Slide member 4. First Rotation Mechanism Group 5 Second Rotation Mechanism Group 6 Connection 7 Cover member

Claims

1. A vibration isolation device that reduces at least one of vibrations transmitted from a first object to a second object or vibrations transmitted from the second object to the first object, a housing having a first plate-shaped member, an opening formed in the first plate-shaped member, and a second plate-shaped member positioned opposite the first plate-shaped member; a slide member having a first surface facing the first plate-shaped member and a second surface facing the second plate-shaped member, the slide member being housed in the housing and positioned between the first plate-shaped member and the second plate-shaped member, and being slidable along the first plate-shaped member and the second plate-shaped member inside the housing; a first rotation mechanism group having a plurality of first rotation mechanisms each having a first sphere that allows the slide member to slide and a first holder portion that rotatably holds the first sphere, the first rotation mechanism being positioned between the first plate-like member and the first surface outside the opening; a second rotation mechanism group having a plurality of second rotation mechanisms each having a second spherical body that allows the slide member to slide and a second holder portion that rotatably holds the second spherical body, and positioned between the second plate-like member and the second surface; a connecting portion that is connected to the slide member, extends from the slide member through the opening to the outside of the housing, and connects to the first object located outside the housing; a cover member that has a third plate-like member positioned outside the housing so as to face the second plate-like member, the third plate-like member covering at least a portion of the second plate-like member and being attached to the housing so as to form a space between the third plate-like member and the second plate-like member, and that can fix the second object to the third plate-like member; Equipped with The first rotation mechanism group includes: a plurality of the first holder parts are fixed to the first plate-shaped member outside the opening, and a plurality of the first spheres in the first rotation mechanism group contact the first surface, or a plurality of the first holder parts are fixed to the first surface, and a plurality of the first spheres in the first rotation mechanism group contact the first plate-shaped member outside the opening, The second rotation mechanism group includes: A seismic isolation device in which a plurality of the second holder parts are fixed to the second plate-shaped member and a plurality of the second spheres in the second rotation mechanism group contact the second surface, or a plurality of the second holder parts are fixed to the second surface and a plurality of the second spheres in the second rotation mechanism group contact the second plate-shaped member.

2. When the first rotation mechanism group is disposed above the second rotation mechanism group, and the connection portion is fixed to the first object located above, and the cover member is fixed to the second object located below, if the first object vibrates, the sliding member vibrates via the connection portion, and vibrations to the housing that stores the sliding member are reduced, and vibrations to the second object fixed to the cover member attached to the housing are reduced, 2. The seismic isolation device of claim 1, wherein when the second rotation mechanism group is positioned above the first rotation mechanism group and the connection portion is fixed to the first object located below, and the cover member is fixed to the second object located above, and the second object vibrates, the housing attached to the cover member vibrates through the cover member, reducing vibration to the slide member stored in the housing and reducing vibration to the first object connected to the slide member through the connection portion.

3. The seismic isolation device according to claim 1 or 2, further comprising an elastic member that biases the slide member toward an initial position of the slide member inside the housing.

4. The elastic member is a first elastic member having a coil spring member with one end and the other end, the one end being connected to the slide member and the other end being connected to the housing, thereby connecting the slide member and the housing and biasing the slide member toward the initial position; a second elastic member having a curved leaf spring member with one end and the other end, the one end side being connected to the slide member and the other end side being connected to the housing, thereby connecting the slide member and the housing and biasing the slide member toward the initial position; The seismic isolation device according to claim 3 , comprising:

5. a third elastic member positioned between the cover member and the second plate-shaped member; The seismic isolation device according to claim 4 , wherein the cover member is attached to the housing with the third elastic member sandwiched between the cover member and the second plate-like member.

6. The connection portion is a rod-shaped member having one end fixed to the slide member and the other end connected to the first object; a spring member inserted into the rod-shaped member; a holding portion that holds the spring member and the rod-shaped member together in a state in which the spring member is pressed against the slide member; The seismic isolation device according to claim 5 , comprising:

7. a first flange portion extending horizontally or approximately horizontally, a second flange portion facing the first flange portion and positioned below the first flange portion, and an H-shaped steel beam having a web portion connecting the first flange portion and the second flange portion, the H-shaped steel beam serving as a beam in the upper part of a building skeleton; a pair of plate-like members extending downward from the web portion side of the upper surface of the second flange portion along the surface of the second flange portion, passing through the upper surface of the second flange portion along the side surface and around to the rear surface of the second flange portion; a fastening member that penetrates the pair of plate-like members and can be fastened to the pair of plate-like members; a connecting member that is the second object and is connected to the pair of plate-like members and is connected and fixed to the cover member; The seismic isolation device according to claim 1 , wherein the cover member is fixed to the connecting member; A building equipped with:

8. The building according to claim 7, further comprising a lattice-shaped grape trellis supported on an upper portion of the building frame.

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