Seismic isolation device
The seismic isolation device addresses inefficiencies in cooling and safety hazards by using a cover body to seal gaps and control movement, enhancing operational efficiency and safety.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- YAKUMO KK
- Filing Date
- 2024-12-09
- Publication Date
- 2026-06-18
AI Technical Summary
Conventional seismic isolation devices for computer servers suffer from inefficient cooling due to air leakage and can be obstructed by foreign objects, posing operational hazards and safety risks.
A seismic isolation device with a cover body that seals gaps between the base and top plates, incorporating a grid-patterned rail structure with cover bodies to prevent air leakage and obstructive entry, enhancing cooling efficiency and safety.
The device effectively suppresses air leakage, improves cooling efficiency, prevents foreign object intrusion, and ensures personnel safety by sealing gaps and controlling movement directions.
Smart Images
Figure JP2024043379_18062026_PF_FP_ABST
Abstract
Description
Seismic isolation device 【0001】 The present invention relates to a seismic isolation device. More specifically, it relates to a seismic isolation device that reduces seismic forces associated with earthquakes for racks on which seismic isolation objects such as computer servers are mounted, various display cases, etc., and suppresses the leakage of cold air from around the seismic isolation device by means of a cover body attached to the device, thereby improving the efficiency of cooling. It also relates to a seismic isolation device that can prevent the intrusion of obstacles that may impede the operation of the seismic isolation device into the device and can prevent injuries such as to the fingers of personnel. 【0002】 Conventionally, a rail-type two-stage seismic isolation device has been proposed that uses four seismic isolation rail bodies, combines two of them in a cross-shaped manner to form a two-stage structure, and is configured to perform seismic isolation in one direction and the other direction orthogonal to this direction for the seismic isolation object on this seismic isolation structure (see, for example, Patent Documents 1 to 3). 【0003】 The seismic isolation rail body in such a seismic isolation device has a structure in which a second rail body is combined with a first rail body so as to be slidable. Two of these seismic isolation rail bodies are installed and fixed in parallel on a base plate (lower plate), and the other two seismic isolation rail bodies are placed and fixed in parallel on top of them in a cross-shaped manner. Further, a top plate (upper plate) is placed and fixed on top of them to construct a two-layer rail-type seismic isolation device. 【0004】 Specifically, for example, a rail body A is formed by bending a plate material into a U-shape, with the open surface facing upward and a plurality of arc-shaped guide portions for the rollers to move provided on both sides of the bend, and a rail body B is formed by bending a plate material into a U-shape, with the open surface facing downward and a plurality of arc-shaped guide portions for the rollers to move provided on both sides of the bend. The rail body B is placed on the rail body A, and rollers and support members are installed in the guide portions of both to form a seismic isolation rail body in which the rail body B is slidably combined with respect to the rail body A. Then, two of these seismic isolation rail bodies are installed and fixed in parallel. 【0005】On the other hand, rail body C is formed by bending a plate into a U-shape, with the open surface facing upwards, and providing multiple arc-shaped guide sections on both bent pieces to which rollers move. Rail body D is formed by bending a plate into a U-shape, with the open surface facing downwards, and providing multiple arc-shaped guide sections on both bent pieces to which rollers move. Rail body D is placed over rail body C, and rollers and support members are installed on both guide sections to create a seismic isolation rail body in which rail body D is slidably connected to rail body C. Then, two seismic isolation rail bodies, each consisting of rail body C and rail body D, are placed parallel to each other on rail body B in a grid-like configuration and fixed in place. 【0006】 Specifically, two rail systems, each consisting of rail system A and rail system B, are installed in parallel to each other, and then two more rail systems, each consisting of rail system C and rail system D, are installed in parallel in a grid pattern. This configuration provides seismic isolation in one direction relative to the seismically isolated body and in another direction perpendicular to it. 【0007】 By the way, when this type of two-layer rail seismic isolation device is used for computer servers, while it can reduce shaking caused by earthquakes, there is a problem in that cold air escapes from the gap between the top plate and base plate of the seismic isolation device, drastically reducing the cooling efficiency. In other words, computer servers generate heat during operation, and this heat can cause malfunctions, so it is necessary to cool the computer servers. Therefore, cooling air is forcibly sent under the OA floor, and the cold air is sent into the inside of the computer servers through the openings in the OA floor and the openings in the seismic isolation device to cool them. 【0008】However, once vibration reduction is achieved in seismic isolation devices, there is a need for more efficient cooling of computer servers, and to the best of the applicant's knowledge, no technology has yet been proposed to address this. Furthermore, in conventional devices of this type, there have been cases where obstructions (such as mice) have entered the seismic isolation device, hindering its operation, and unforeseen incidents have occurred, such as when a person operating the device accidentally enters the device and injures their finger. 【0009】 Patent No. 4130565 Patent No. 5033230 Patent No. 6950963 【0010】 The present invention was developed in view of the above-mentioned circumstances of the prior art, and relates to a seismic isolation device that reduces seismic forces associated with earthquakes in racks and various display cases on which seismically isolated bodies such as computer servers are mounted. Furthermore, the invention aims to provide a seismic isolation device that improves cooling efficiency by suppressing the leakage of cold air from around the seismic isolation device through a cover attached to the device, prevents the intrusion of obstructions that would hinder the operation of the seismic isolation device into the device, and prevents injuries to personnel's fingers, etc. 【0011】 A seismic isolation device according to a first aspect of the present invention is characterized by comprising: a base plate installed on an OA floor or floor with a predetermined opening area; a first seismic isolation structure that controls movement in the Y direction, comprising at least two rail bodies arranged parallel to each other at predetermined intervals on the base plate; a second seismic isolation structure that controls movement in the X direction, comprising at least two rail bodies arranged parallel to each other at predetermined intervals so as to be combined in a grid pattern on the first seismic isolation structure; a top plate installed on the second seismic isolation structure with a predetermined opening area; and cover bodies that close the gap exposed between the base plate and the top plate, attached along the longitudinal direction to the sides of each rail body which form the four outer surfaces of the two-layer rail type seismic isolation body composed of the first seismic isolation structure and the second seismic isolation structure. 【0012】 Furthermore, another aspect of the present invention relates to a seismic isolation device disposed between a base plate installed on an OA floor or floor and a top plate on which a seismically isolated body is placed, and is characterized by comprising: a first seismic isolation structure that controls movement in the Y direction, composed of at least two rail bodies arranged parallel to each other at predetermined intervals on the base plate; a second seismic isolation structure for installing the top plate that controls movement in the X direction, composed of at least two rail bodies arranged parallel to each other at predetermined intervals so as to be combined in a grid pattern on the first seismic isolation structure; and cover bodies that close the gap exposed between the base plate and the top plate, attached along the length direction to the sides of each rail body which form the four outer surfaces of the two-layer rail type seismic isolation body composed of the first seismic isolation structure and the second seismic isolation structure. 【0013】 In other words, in all seismic isolation devices according to the present invention, a plate-shaped cover is installed on the outside of the first and second seismic isolation structures, which are assembled in a grid pattern, to seal the gaps and suppress the leakage of cold air, thereby improving the efficiency of cooling. 【0014】In each seismic isolation device according to the present invention, the first seismic isolation structure is formed in a U-shape with an opening at the top and comprises two opposing sides extending in the Y direction and a bottom surface connecting the two sides, and the two sides are provided with arc-shaped curved guide holes in their longitudinal direction to provide seismic isolation in the Y direction, forming a Y-direction lower rail body, and is formed in a U-shape with an opening at the bottom and comprises two opposing sides extending in the Y direction and a top surface that is wider than the bottom surface of the Y-direction lower rail body connecting the two sides, and the two sides The rail body is constructed by combining a Y-direction upper rail body, which is provided with a guide section of an arc-shaped curved elongated hole that provides seismic isolation in the Y direction along its length, with the Y-direction lower rail body on the inside and the Y-direction upper rail body on the outside, so that the Y-direction upper rail body covers the Y-direction lower rail body, and rollers are interposed so as to be perpendicular to each guide section of the seismic isolation rail body, so that the Y-direction lower rail body and the Y-direction upper rail body of each rail body can move relative to each other in the Y direction. The second seismic isolation structure is formed in a U-shape with an opening at the top and comprises two opposing sides extending in the X direction and a bottom surface connecting the two sides, and the two sides are provided with arc-shaped curved elongated guide sections that provide seismic isolation in the X direction along their length, forming an X-direction lower rail body, and the second seismic isolation structure is formed in a U-shape with an opening at the bottom and comprises two opposing sides extending in the X direction and a top surface that is wider than the bottom surface of the X-direction lower rail body that connects the two sides, and the two sides are provided with seismic isolation in the X direction along their length A set of upper rail bodies in the X direction, which are provided with guide sections of arc-shaped curved elongated holes to perform their function, are used as a pair. The rail bodies are constructed by combining the lower rail bodies in the X direction on the inside and the upper rail bodies in the X direction on the outside, with the upper rail bodies in the X direction covering the lower rail bodies in the X direction. Rollers are interposed in the seismic isolation rail bodies so as to be perpendicular to each guide section, thereby enabling relative movement of the lower rail bodies in the X direction and the upper rail bodies in the X direction in each rail body. 【0015】 Furthermore, in each seismic isolation device according to the present invention, the cover body may be composed of a pair of first cover bodies attached to the upper rail body in the Y direction of the first seismic isolation structure, and a pair of second cover bodies attached to the lower rail body in the X direction of the second seismic isolation structure. 【0016】 In this case, the first cover body may be provided with a notch in the portion that will suppress the movement of the upper rail body in the X direction of the second seismic isolation structure, and the second cover body may be provided with a notch in the portion that will suppress the movement of the lower rail body in the Y direction of the first seismic isolation structure. That is, the first cover body may be provided with a notch in the portion that will come into contact with the movement of the upper rail body in the X direction, and the second cover body may be provided with a notch in the portion that will come into contact with the movement of the lower rail body in the Y direction. 【0017】 Furthermore, in each seismic isolation device according to the present invention, it is preferable that the two-layer rail type seismic isolation body can be connected to other two-layer rail type seismic isolation bodies. 【0018】 According to the present invention, by providing a cover body on the outer surface of a two-layer rail type seismic isolation body composed of a first seismic isolation structure and a second seismic isolation structure, gaps created by combining the first and second seismic isolation structures in layers, and openings provided to control the movement of the first and second seismic isolation structures in a predetermined direction (for example, guide parts on which roller bodies move) can be closed. Therefore, it is possible to provide a seismic isolation device that suppresses the leakage of cold air from around the seismic isolation device and improves the efficiency of cooling. Furthermore, it is possible to provide a seismic isolation device that can prevent rodents and other objects that may hinder the operation of the seismic isolation device from entering the device, and can also prevent injuries to personnel's fingers, etc. 【0019】This is a schematic perspective view showing the seismic isolation device according to the present invention. This is a schematic plan view showing the seismic isolation device according to the present invention. This is a schematic side view illustrating the installed state of the seismic isolation device according to the present invention. This is a schematic front view illustrating the installed state of the seismic isolation device according to the present invention. This is a schematic longitudinal cross-sectional view illustrating the structure of the seismic isolation rail body in the seismic isolation device according to the present invention. This is a schematic side view showing the state of the seismic isolation device according to the present invention before the cover body is attached. This is a schematic front view showing the state of the seismic isolation device according to the present invention before the cover body is attached. This is a schematic partial transverse cross-sectional view illustrating the structure of the seismic isolation rail body in the seismic isolation device according to the present invention. This is a schematic perspective view illustrating the combined state of the seismic isolation rail bodies in the seismic isolation device according to the present invention. This is a schematic side view (A) and schematic plan view (B) illustrating the upper rail body in the Y direction in the seismic isolation device according to the present invention. This is a schematic side view (A) and schematic plan view (B) illustrating the upper rail body in the X direction in the seismic isolation device according to the present invention. This is a schematic front view illustrating the end plate in the seismic isolation device according to the present invention. Figure 16 shows a schematic front view, a schematic top view, and a schematic left side view illustrating the side (Y-direction) cover body of the seismic isolation device according to the present invention. Figure 16 shows a schematic front view, a schematic top view, and a schematic left side view illustrating the front (X-direction) cover body of the seismic isolation device according to the present invention. Figure 16 shows a schematic top view illustrating the connected state of the seismic isolation device according to the present invention. Figure 16 shows a schematic partial enlargement illustrating the connected state indicated by the symbol A enclosed in a dashed rectangle. 【0020】 Hereinafter, an example of an embodiment of the seismic isolation device according to the present invention will be described with reference to the drawings. While the embodiments described below are preferred specific examples of the present invention and therefore subject to various technical limitations, the scope of the present invention is not limited to these forms unless otherwise specified in the following description. 【0021】 As shown in Figures 1 to 4, the seismic isolation device 100 according to this embodiment is composed of a base plate (lower plate) 3, a top plate (top plate) 4, a first seismic isolation structure 11, a second seismic isolation structure 12, a first cover body 6, and a second cover body 7. 【0022】The base plate 3 is a component installed on the OA floor 1 with a predetermined opening area 5. The OA floor 1 is a so-called double floor or free access floor, which is installed when a seismically isolated body 2 such as a personal computer is placed on the floor (structure) with a space of a certain height above it to create a double floor, and to house telephone lines, network cables, outlets, etc. The top plate 4 is a component installed on the second seismically isolated structure 12 with a predetermined opening area 5, on which a seismically isolated body such as a computer server is placed. 【0023】 The first seismic isolation structure 11 and the second seismic isolation structure 12 constitute the main parts that exert the seismic isolation effect in the seismic isolation device 100. For the basic structure, reference can be made to the prior art disclosed in Japanese Patent Publication No. 4130565, Japanese Patent Publication No. 5033230, and Japanese Patent Publication No. 6950963, which are cited as prior art. Therefore, a detailed explanation will be left to the disclosures in the aforementioned patent publications, and a brief explanation will be given here. 【0024】 The first seismic isolation structure 11 is a mechanism that controls movement in the Y direction, consisting of two seismic isolation rails 110, 110 arranged parallel to each other at a predetermined distance on a base plate 3 installed on the OA floor 1. In other words, the first seismic isolation structure 11 is composed of two seismic isolation rails (hereinafter referred to as "Y-direction seismic isolation rails") 110, 110 installed to allow smooth movement in a certain direction, and controls movement in the first horizontal direction (Y direction) parallel to one surface of the base plate 3. 【0025】 This Y-direction seismic isolation rail body 110 is composed of, for example, a Y-direction lower rail body 111 made of a slender steel material with a length of 900 mm and a Y-direction upper rail body 112 made of a slender steel material of the same length, as a set. Two sets are arranged on the base plate 3 at a predetermined interval, for example, 600 mm apart, in parallel. The Y-direction lower rail body 111 and the Y-direction upper rail body 112 that constitute the Y-direction seismic isolation rail body 110 can be schematically shown in Figure 5. 【0026】The lower rail body 111 in the Y direction is formed in a U-shape with an opening at the top, and has two opposing side surfaces 111s, 111s extending in the Y direction, and a bottom surface 111b connecting the two side surfaces 111s, 111s. In addition, each side surface 111s is provided with an arc-shaped curved elongated hole guide portion 113 that provides seismic isolation in the Y direction along its length. 【0027】 Furthermore, the upper rail body 112 in the Y direction is formed in a U-shape with an opening at the bottom, and comprises two opposing side surfaces 112s, 112s extending in the Y direction, and a top surface 112t that is wider than the lower rail body 111 in the Y direction and connects the two side surfaces 112s, 112s. In addition, each side surface 112s is provided with an arc-shaped curved elongated hole guide portion 114 that provides seismic isolation in the Y direction along its length. 【0028】 Thus, the Y-direction seismic isolation rail body 110 is constructed by combining a lower Y-direction rail body 111 as the inner rail and an upper Y-direction rail body 112 as the outer rail, with the upper Y-direction rail body 112 covering the lower Y-direction rail body 111. In the following description, the lower Y-direction rail body 111 may be simply referred to as the "inner rail," and the upper Y-direction rail body 112 may be simply referred to as the "outer rail." 【0029】 Furthermore, in the Y-direction seismic isolation rail body 110, rollers 13 are interposed (penetrating) so as to be perpendicular to each of the guide sections 113 and 114. These rollers 13 are formed with a circular cross-section having dimensions slightly smaller than the height dimensions of the guide sections 113 and 114. 【0030】 In the Y-direction seismic isolation rail body 110, as shown in Figures 6 and 8, rollers 13 are interposed so as to be able to roll horizontally between the guide portions 113 and 114, which are arranged to correspond to the inner rail 111 and the outer rail 112, respectively, thereby enabling relative movement between the inner rail 111 and the outer rail 112 in the Y direction (horizontal direction). Furthermore, the rollers 13 that pass through the guide portions 113 and 114 are rotatably supported by support members 14. 【0031】 The second seismic isolation structure 12 is a mechanism that controls movement in the X direction, composed of two seismic isolation rail bodies 120, 120 arranged parallel to each other at a predetermined interval so as to be layered and assembled in a grid-like pattern on top of the first seismic isolation structure 11. That is, the second seismic isolation structure 12, like the first seismic isolation structure 11, is composed of two seismic isolation rail bodies (hereinafter referred to as "X-direction seismic isolation rail bodies") 120, 120 installed to allow smooth movement in a certain direction, and controls movement in a second horizontal direction (X direction) that is parallel to one surface of the base plate 3 and perpendicular to the Y direction (first horizontal direction). 【0032】 This X-direction seismic isolation rail body 120 is composed of, for example, an X-direction lower rail body 121 made of a slender steel material with a length of 600 mm and an X-direction upper rail body 122 made of a slender steel material of the same length, as a set. Two sets are arranged on the first seismic isolation structure 11 at a predetermined interval, for example, 500 mm, in parallel. The X-direction lower rail body 121 and the X-direction upper rail body 122 that constitute the X-direction seismic isolation rail body 120 can also be schematically shown using Figure 5. 【0033】 In other words, the lower rail body 121 in the X direction is formed in a U-shape with an opening at the top, and has two opposing side surfaces 121s, 121s extending in the X direction, and a bottom surface 121b connecting the two side surfaces 121s, 121s. Furthermore, as shown in Figure 7, each side surface 121s is provided with an arc-shaped curved elongated hole guide portion 123 that provides seismic isolation in the X direction along its length. 【0034】 Furthermore, the upper rail body 122 in the X direction is formed in a U-shape with an opening at the bottom, and has two opposing side surfaces 122s, 122s extending in the X direction, and a top surface 122t that is wider than the lower rail body 121 in the X direction and connects the two side surfaces 122s, 122s. In addition, each side surface 122s is provided with an arc-shaped curved elongated hole guide portion 124 that provides seismic isolation in the X direction along its length. 【0035】Thus, the X-direction seismic isolation rail body 120 is constructed by combining the X-direction lower rail body 121 as the inner rail and the X-direction upper rail body 122 as the outer rail, and by combining them so that the X-direction upper rail body 122 covers the X-direction lower rail body 121. In the following description, the X-direction lower rail body 121 may be simply referred to as the "inner rail," and the X-direction upper rail body 122 may be simply referred to as the "outer rail." 【0036】 Furthermore, in the X-direction seismic isolation rail body 120, rollers 23 are interposed (penetrating) so as to be orthogonal to each of the guide sections 123 and 124. These rollers 23 are formed with a circular cross-section having dimensions slightly smaller than the height dimensions of the guide sections 123 and 124. 【0037】 In the X-direction seismic isolation rail body 120, as shown in Figures 7 and 8, rollers 23 are interposed so as to be able to roll horizontally between the guide portions 123 and 124, which are arranged to correspond to the inner rail 121 and the outer rail 122, respectively, thereby enabling relative movement between the inner rail 121 and the outer rail 122 in the X direction (horizontal direction perpendicular to the Y direction). Furthermore, the rollers 23 that pass through the guide portions 123 and 124 are rotatably supported by support members 24. 【0038】 The first seismic isolation structure 11 and the second seismic isolation structure 12 are combined to form a two-layer rail-type seismic isolation body 10. That is, the second seismic isolation structure 12 is arranged on top of the first seismic isolation structure 11 in a layered, grid-like configuration. Therefore, as shown in Figure 9, the upper Y-direction rail body 112 of the Y-direction seismic isolation rail body 110 that constitutes the first seismic isolation structure 11 and the lower X-direction rail body 121 that constitutes the second seismic isolation structure 12 are combined with each other. 【0039】As shown in Figure 10, the upper rail body 112 in the Y direction is provided with fitting engagement portions 116 at the upper part of each end region in the longitudinal direction of the two side surfaces 112s, 112s, into which the fitting groove receiving portion 125 of the X-direction seismic isolation rail body 120, which will be described later, is fitted. In addition, four arc-shaped guide portions 114 are provided along the longitudinal direction of the two side surfaces 112s, 112s, two on each side, to provide seismic isolation in the Y direction. 【0040】 Furthermore, a screw cylinder portion 118 is provided projecting in the X direction from an intermediate position of the fitting engagement portion 116 on the outer side surface 112s of the upper rail body 112 in the Y direction, and the fitting connection portions at each of the four corners by screw fastening to the screw cylinder portion 118 are configured to be connected and fixed at a right angle by the pair of upper rail bodies 112, 112 in the Y direction and the pair of lower rail bodies 121, 121 in the X direction. 【0041】 On the other hand, as shown in Figure 11, the lower rail body 121 in the X direction is provided with fitting groove receiving portions 125 at the lower end of each longitudinal end region of the two sides 121s, 121s, into which the fitting engagement portion 116 of the Y-direction seismic isolation rail body 110 described above is fitted. In addition, along the longitudinal direction of the two sides 121s, 121s, there are two arc-shaped guide portions 123 on each side, for a total of four, which provide seismic isolation function in the X direction. 【0042】 Furthermore, each of the two sides 121s, 121s of the lower rail body 121 in the X direction is provided with rectangular fitting projections 127, 127 at each longitudinal end, ensuring a perpendicular connection and fixed state at each of the four corner fitting connections formed by the pair of upper rail bodies 112, 112 in the Y direction and the pair of lower rail bodies 121 in the X direction, and making that connection and fixed state robust. 【0043】 Specifically, the fitting engagement portion 116 of the upper rail body 112 in the Y direction is fitted into the pair of fitting groove receiving portions 125 of the lower rail body 121 in the X direction by groove coupling, thereby connecting the upper rail body 112 in the Y direction and the lower rail body 121 in the X direction in a perpendicular manner. This assembly is carried out in a total of four places for the pair of upper rail bodies 112 in the Y direction and the pair of lower rail bodies 121 in the X direction. 【0044】After the lattice-shaped connection (assembly) of the upper rail body 112 in the Y direction and the lower rail body 121 in the X direction is completed, end plates 15 formed in a convex plate shape are attached to both end portions in the length direction of the upper rail body 112 in the Y direction, and the end plates 15 are attached to the end faces of the seismic isolation rail body 121 in the X direction, thereby connecting the seismic isolation rail body 110 in the Y direction and the seismic isolation rail body 120 in the X direction in an orthogonal state. 【0045】 Specifically, as shown in FIG. 12, the end plate 15 is provided with fitting recesses 151 on both side edge portions on the upper side thereof, and receiving grooves 152 are provided at the bottoms of these fitting recesses 151. Further, the end plate 15 is provided with connection holes 155 for connection with another seismic isolation device 100 on both side pieces on the lower side. 【0046】 Therefore, after combining the upper rail body 112 in the Y direction and the lower rail body 121 in the X direction in an orthogonal state, the fitting recesses 151, 151 and the receiving grooves 152, 152 provided on both side edge portions of the end plate 15 are fitted onto the fitting protrusions 127, 127 provided on the two side surfaces 121s, 121s of the seismic isolation rail body 121 in the X direction, respectively, to perform groove connection. Then, by screwing and tightening a screw 154 into the screw cylinder portion 118 of the upper rail body 112 in the Y direction through a screw through hole 153 provided in the end plate 15, the end plate 15 fixes the upper rail body 112 in the Y direction and the lower rail body 121 in the X direction. 【0047】 As described above, in the two-layer rail type seismic isolation body 10, the first seismic isolation structure 11 composed of a pair of seismic isolation rail bodies 110, 110 in the Y direction and the second seismic isolation structure 12 composed of a pair of seismic isolation rail bodies 120, 120 in the X direction are fitted and connected in a lattice shape with a predetermined interval and in an orthogonal arrangement. 【0048】 Further, the first cover body 6 and the second cover body 7 are members that close the gaps exposed between the base plate 3 and the top plate 4, which are attached along the length direction to the side surfaces of the respective seismic isolation rail bodies 110, 120 that constitute the four outer sides in the two-layer rail type seismic isolation body 10 constituted by the first seismic isolation structure 11 and the second seismic isolation structure 12. 【0049】The first cover body 6 is a pair of cover bodies (hereinafter referred to as "side cover") attached to the Y-direction upper rail body 112 of the first seismic isolation structure 11, and as shown in Figure 13, it comprises a flat portion 61 along the side surface 112s of the Y-direction upper rail body 112, a bent piece 62 that bends inward at its upper edge, and a plurality of notches 63...63 that suppress the movement of the Y-direction lower rail body 111 of the first seismic isolation structure 11. In this embodiment, the first cover body 6 is, for example, 900 mm in length, similar to the Y-direction lower rail body 111 and the Y-direction upper rail body 112 that constitute the Y-direction seismic isolation rail body 110. 【0050】 Furthermore, the second cover body 7 is a pair of second cover bodies (hereinafter referred to as "front cover") attached to the lower rail body 121 in the X direction of the second seismic isolation structure 12, and as shown in Figure 14, it comprises a flat portion 71 along the side surface 121s of the lower rail body 121 in the X direction, a bent piece 72 that bends inward at its lower edge, and a plurality of notches 73...73 that suppress the movement of the upper rail body 121 in the X direction of the second seismic isolation structure 12. In this embodiment, the second cover body 7 is, for example, 600 mm in length, similar to the lower rail body 121 and upper rail body 122 in the X direction that constitute the seismic isolation rail body 120 in the X direction. 【0051】 By attaching the side cover 6 and front cover 7 to the outer perimeter (four sides) of the double-layer rail type seismic isolation body 10 in this manner, it is possible to suppress the leakage of cold air from around the seismic isolation device 100 and improve the efficiency of cooling. In addition, by aligning the origin position of the seismic isolation device 100 with the base plate 3 or top plate 4 and the cover bodies 6 and 7, it is possible to easily visually confirm whether or not it has returned to the origin position if it has moved due to an earthquake or the like. 【0052】 Furthermore, by providing notches 63 and 73 in the cover bodies 6 and 7, respectively, the seismic isolation device 100 can efficiently control the movement without hindering the operation (movement) of the seismic isolation rail body located on the base plate 3 side (lower rail body 111 in the Y direction) or the seismic isolation rail body located on the top plate 4 side (upper rail body 122 in the X direction). 【0053】 As described above, the seismic isolation device 100 of this embodiment suppresses the wasteful release of cold air from the gap between the base plate 3 and the top plate 4 and from the openings in the double-layer rail type seismic isolation body 10, and can efficiently and effectively supply cold air to the inside of the seismically isolated object 2, such as a computer server, placed on the top plate 4. Furthermore, by providing the cover bodies 6 and 7, it is possible to prevent obstacles that would interfere with the operation of the seismic isolation device 100 from entering the interior, thus providing stable safety as a seismic isolation device 100. Moreover, according to the seismic isolation device 100 of the present invention, by providing each cover body, it is possible to prevent situations in which obstacles that would hinder the operation of the seismic isolation device (for example, mice, etc.) enter the device and hinder its operation, and it is also possible to prevent unforeseen incidents in which the fingers of personnel operating the device may inadvertently enter the device and injure their fingers. 【0054】 In this embodiment described above, the inner rails 111 and 121 of the Y-direction seismic isolation rail body 110 and the X-direction seismic isolation rail body 120 are both positioned with the inner rails 111 and 121 on the lower side. However, they may be reversed so that the outer rails 112 and 122 are positioned on the lower side. Furthermore, in this embodiment, the Y-direction seismic isolation rail body 11 is composed of two seismic isolation rail bodies 110, 110, and the X-direction seismic isolation rail body 12 is composed of two seismic isolation rail bodies 120, 120. However, the number of seismic isolation rail bodies 110 and 120 that make up the Y-direction seismic isolation rail body 11 and the X-direction seismic isolation rail body 12 is not limited to these, and three or more may be arranged in parallel with predetermined intervals between them. 【0055】 Furthermore, as shown in Figures 15 and 16, the seismic isolation device 100 of this embodiment is designed so that two seismic isolation devices 100, 100 can be connected to each other. That is, by connecting the sides of two adjacent double-layer rail type seismic isolation devices 10, 10 before attaching the cover bodies 6, 7, a larger seismic isolation device 200 can be formed in terms of planar dimensions. 【0056】As for the specific connection methods, for example, as shown in an enlarged view in Figure 17, adjacent top plates 4, 4 are connected at two points using bolts 102 and nuts, straddling the sides using rectangular plate-shaped connecting plates 101. Adjacent double-layer rail type seismic isolation bodies 10, 10 are connected at two points in the Y direction using bolts 104 and nuts 105, by connecting the end plates 15 (connecting holes 155) attached to the upper rail body 112 in the Y direction. Furthermore, adjacent base plates 3, 3 are connected at two points in the Y direction using bolts 106 and nuts 107, by connecting holes provided on the bent vertical sides 31, 31. After the connection of the two double-layer rail type seismic isolation bodies 10, 10 is completed, the side covers 6 and front covers 7 are attached, respectively. 【0057】 By making two seismic isolation devices connectable to each other in this way, it becomes unnecessary to prepare a large seismic isolation device. Smaller seismic isolation devices can be connected on-site as needed, resulting in a seismic isolation device that can efficiently accommodate large computer servers or multiple computer servers. Furthermore, reducing the size of the seismic isolation device makes transportation and storage easier, alleviating the hassle and inconvenience of transporting or storing large seismic isolation devices. Moreover, it is possible to efficiently supply cool air to the inside of computer servers mounted on a seismic isolation device that integrates multiple seismic isolation devices. 【0058】 In addition, while Figures 15 and 16 illustrate another form of seismic isolation device 200 in which two seismic isolation devices 100 are connected in parallel (in the X direction), the number and orientation of the connected seismic isolation devices 100 are not limited to these. Therefore, in the present invention, two or more seismic isolation devices may be connected in parallel, two or more seismic isolation devices may be connected in a column (in the Y direction), or two or more seismic isolation devices may be connected in parallel (in the X direction) and in a column (in the Y direction). 【0059】Furthermore, although the above-described embodiment explained that the seismic isolation device 100 includes the base plate 3 and the top plate 4, in the present invention, the seismic isolation device can also be made without the base plate 3 and the top plate 4. That is, in a two-layer rail type seismic isolation body 10 composed of a first seismic isolation structure 11 and a second seismic isolation structure 12, the seismic isolation device may be made by attaching side covers 6 and front covers 7 to the sides of each of the four seismic isolation rail bodies 110, 120 that constitute the outer perimeter. Then, this seismic isolation device is installed on the base plate 3, and the top plate 4 is installed on top of it. 【0060】 The seismic isolation device of the present invention can be widely applied to seismically isolated structures such as computer servers, where efficient cooling is required. 【0061】 1 OA floor 2 Computer server (seismic isolation body) 3 Base plate 4 Top plate 5 Opening 6 Side cover (cover body) 7 Front cover (cover body) 8 Floor 10 Double-layer rail type seismic isolation body 11 First seismic isolation structure 12 Second seismic isolation structure 13, 23 Rollers 14, 24 Support members 15 End plate 31 Folded vertical side 61 Cover surface 62 Folded piece 63 Notch 71 Cover surface 72 Folded piece 73 Notch 100 (100A, 100B) Seismic isolation device 101 Connecting plate 102, 104, 106 Bolts 105, 107 Nuts 110 Y-direction seismic isolation rail body 111 Y-direction lower rail body (inner rail) 111S Side 111b Bottom 112 Y-direction upper rail body (outer rail) 112S Side 112t Top surface 113, 114 Guide part 116 Fitting engagement part 118 Screw cylinder part 120 X-direction seismic isolation rail body 121 X-direction lower rail body (inner rail) 121S Side 121b Bottom surface 122 X-direction upper rail body (outer rail) 122S Side 122t Top surface 123, 124 Guide part 125 Fitting engagement part 127 Fitting projection 151 Fitting recess 152 Receiving groove part 153 Screw through hole 154 Screw 155 Connecting hole
Claims
1. This invention relates to a seismic isolation device that reduces seismic forces associated with earthquakes in racks, display cases, etc., on which seismically isolated bodies such as computer servers are mounted, and also to a seismic isolation device that improves cooling efficiency by suppressing the leakage of cold air from around the seismic isolation device with a cover attached to the device, prevents the entry of obstructions that would hinder the operation of the seismic isolation device into the device, and prevents injuries to personnel's fingers, etc., and comprises: a base plate installed on an OA floor or floor with a predetermined opening area; a first seismic isolation structure that controls movement in the Y direction, consisting of at least two or more seismic isolation rails arranged parallel to each other at predetermined intervals on the base plate; a second seismic isolation structure that controls movement in the X direction, consisting of at least two or more seismic isolation rails arranged parallel to each other at predetermined intervals so as to be combined in a grid pattern on the first seismic isolation structure; and a top plate installed on the second seismic isolation structure with a predetermined opening area. A seismic isolation device comprising: a two-layer rail type seismic isolation body composed of the first seismic isolation structure and the second seismic isolation structure, wherein a cover body is attached along the longitudinal direction to each of the four outer sides of the seismic isolation rail body, the cover body closing the gap exposed between the base plate and the top plate.
2. The present invention relates to a seismic isolation device that reduces seismic forces associated with earthquakes in racks, display cases, etc., on which seismically isolated bodies such as computer servers are mounted, and also includes a cover attached to the device to suppress the leakage of cold air from around the seismic isolation device, thereby improving cooling efficiency, preventing the intrusion of obstructions that would hinder the operation of the seismic isolation device into the device, and preventing injuries to personnel's fingers, etc. The seismic isolation device is disposed between a base plate installed on an OA floor or floor and a top plate on which the seismically isolated body is placed, and comprises a first seismic isolation structure that controls movement in the Y direction, consisting of at least two or more seismic isolation rails arranged parallel to each other at predetermined intervals on the base plate, and a second seismic isolation structure for installing the top plate that controls movement in the X direction, consisting of at least two or more seismic isolation rails arranged parallel to each other at predetermined intervals so as to be combined in a grid pattern on the first seismic isolation structure, A seismic isolation device comprising: a two-layer rail type seismic isolation body composed of the first seismic isolation structure and the second seismic isolation structure, wherein a cover body is attached along the longitudinal direction to each of the four outer sides of the seismic isolation rail body, the cover body closing the gap exposed between the base plate and the top plate.
3. The first seismic isolation structure is formed in a U-shape with an opening at the top and comprises two opposing sides extending in the Y direction and a bottom surface connecting the two sides, and the two sides are provided with arc-shaped curved guide holes in their longitudinal direction to provide seismic isolation in the Y direction, forming a Y-direction lower rail body, and the two sides are formed in a U-shape with an opening at the bottom and comprises two opposing sides extending in the Y direction and a top surface that is wider than the bottom surface of the Y-direction lower rail body connecting the two sides, and the two sides are provided with arc-shaped curved guide holes in their longitudinal direction to provide seismic isolation in the Y direction, and A Y-direction upper rail body is constructed with a guide section having an arc-shaped curved elongated hole that provides seismic isolation in the direction, and the Y-direction lower rail body is constructed as a set, and the Y-direction lower rail body is constructed so as to cover the Y-direction upper rail body with respect to the Y-direction lower rail body, and rollers are interposed so as to be perpendicular to each guide section of the seismic isolation rail body, so that the Y-direction lower rail body and the Y-direction upper rail body of each seismic isolation rail body can move relative to each other in the Y direction. The second seismic isolation structure is formed in a U-shape with an open upper side, and comprises two opposing sides extending in the X direction, and a bottom surface connecting the two sides, and the two sides are provided with arc-shaped curved elongated guide sections in the longitudinal direction to provide seismic isolation in the X direction, forming an X-direction lower rail body, and is formed in a U-shape with an open lower side, and comprises two opposing sides extending in the X direction, and a top surface that is wider than the bottom surface of the X-direction lower rail body connecting the two sides, and the two sides are provided with arc-shaped curved elongated guide sections in the longitudinal direction to provide seismic isolation in the X direction The seismic isolation rail body is constructed by combining an upper rail body in the X direction, which is provided with an arc-shaped curved elongated hole guide section to provide seismic isolation functionality, with the lower rail body in the X direction on the inside and the upper rail body in the X direction on the outside, so that the upper rail body in the X direction covers the lower rail body in the X direction, and rollers are interposed so as to be perpendicular to each guide section of the seismic isolation rail body, so that the lower rail body in the X direction and the upper rail body in the X direction of each seismic isolation rail body can move relative to each other in the X direction.The seismic isolation device according to claim 1 or 2.
4. The seismic isolation device according to claim 3, characterized in that the cover body is composed of a pair of first cover bodies attached to the upper rail body in the Y direction of the first seismic isolation structure and a pair of second cover bodies attached to the lower rail body in the X direction of the second seismic isolation structure.
5. The seismic isolation device according to claim 4, characterized in that the first cover body is provided with a notch in a portion that will suppress the movement of the upper rail body in the X direction of the second seismic isolation structure, and the second cover body is provided with a notch in a portion that will suppress the movement of the lower rail body in the Y direction of the first seismic isolation structure.
6. The seismic isolation device according to claim 1 or 2, characterized in that the two-layer rail type seismic isolation body is connectable to other two-layer rail type seismic isolation bodies.