JP4285876B2 - Seismic isolation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seismic isolation device. Specifically, seismic isolation can prevent equipment from tipping over even when a large seismic force is applied to box-like equipment with a width greater than the depth, such as vending machines or storage cabinets placed on the floor. Relates to the device.
[0002]
In recent years, various facilities have been toppled and broken due to a large earthquake, or the human body and peripheral equipment have been damaged by the falling of the equipment. For this reason, in order to prevent the device from falling and to ensure the safety of human life and peripheral devices, there is a demand for a reliable fall prevention technology.
[0003]
[Prior art]
FIG. 8 shows a seismic isolation device described in Japanese Patent Application No. 10-323721 previously proposed. As shown in the figure, this comprises a pair of device support portions 2, 2 ′, a pair of trays 3, 3 ′, and a main body frame 4. The main body frame 4 is rectangular in cross section, and is provided with an opening having a width that allows the device support portions 2 and 2 'to pass through in the longitudinal direction of one side and prevents the device support portions 2 and 2' from escaping. Yes.
[0004]
Further, the device support portions 2 and 2 ′ are provided with a roller 6 that is pivotally supported by the device support portion main body 5 by a roller support shaft 7, and a bolt 8 that is attached to the device 9. The trays 3 and 3 'are rectangular and have a width that can slide in the main body frame 4. The bottom of the trays 3 and 3' has a sloping inclined surface 3a that rises from the center to the left and right, and an outer periphery. A wall portion 3b is formed in the shape of a dish.
[0005]
One seismic isolation device 1 configured in this manner is attached to each of the left and right sides of the device 9. For attachment, the device is attached to the bottom of the device 9 using the device mounting bolts 8 of the device support portions 2 and 2 ′. When an earthquake occurs, the main body frame 4 placed on the floor moves in response to the earthquake vibration. At that time, the tray 3 also moves with the main body frame 14. However, since the roller 6 rolls on the inclined surface 3a of the tray 3, the device support portions 2 and 2 'do not move following the tray 13, so that the device remains stationary due to the static inertia force based on the mass. is there. When the vibration is settled, the roller 6 rolls on the inclined surface 3a and returns to the center. As a result, the device 9 also returns to the original position.
[0006]
When the earthquake is further increased and the wall 3b of the tray 3 comes into contact with the device support body 5, the tray 3 stops and the main body frame 4 moves with the floor, but the tray 3 and the device remain stationary. In this case, the saucer 3 does not always return to the original position even if the earthquake stops. In this way, even if there is an earthquake, the equipment will remain stationary and will not fall over.
[0007]
[Problems to be solved by the invention]
In the conventional seismic isolation device described above, since the physical conditions of the device body (center of gravity position, mounting position of support part, installation location, etc.) exhibit certain seismic isolation performance, There is a problem that seismic isolation performance differs when physical conditions and installation conditions are different.
[0008]
In view of the above-described conventional problems, an object of the present invention is to realize a seismic isolation device that can easily cope with a case where physical conditions and installation conditions of main equipment are different.
[0009]
[Means for Solving the Problems]
According to the first aspect of the present invention, a plate material having a predetermined length is bent into a rectangular tube shape, and a central portion of one side thereof is opened in the longitudinal direction, and the substrate is placed on the floor with the opening portion facing upward. A main body frame, a pair of trays slidably provided in the main body frame, a pair of device support portions arranged to support the device and move on the tray, and In the seismic isolation device, the tray is integrated by laminating a rectangular plate material on both sides and laminating a plurality of plate materials formed in a U shape in parallel to the longitudinal direction of the main body frame, and the U shape. An inclined surface with a loose middle depression is formed on the bottom of the shape, and the angle and distance of the inclined surface are set appropriately to obtain desired seismic isolation characteristics.
[0010]
By adopting this configuration, it is possible to arbitrarily set the angle of the slanted surface and the distance of the slanted surface of the recess in the tray, or by changing the angle of the slanted surface stepwise to form the center of gravity of the device body. It is possible to control the seismic isolation characteristics optimal for the position and installation location, and to construct a saucer at a low cost by a structure in which plate-shaped objects are laminated.
[0011]
The invention of claim 2 is characterized in that a liner of a low friction material is attached to the bottom surface of the tray. By adopting this configuration, the relative movement of the main body frame and the tray can be made smooth. The invention according to claim 3 is characterized in that the device support portion has an adjustment function capable of adjusting the device installation height, and the adjustment lever can be removed. By adopting this configuration, the unevenness of the floor surface can be absorbed, and the workability and aesthetics can be improved by removing the adjustment lever.
[0012]
According to a fourth aspect of the present invention, there is provided an apparatus supporting part main body of sheet metal formed by bending a section of the apparatus supporting part on the inclined surface of the tray of the apparatus supporting part so as to be bent in an inverted U shape. Or a plurality of rotatable needles, or a protrusion whose tip is formed on a curved surface. By adopting this configuration, the relative movement between the device support portion and the tray can be made smooth, and the device support portion main body can be made of sheet metal to reduce weight and space.
[0013]
The invention of claim 5 is characterized in that a liner of a low friction material is attached to the bottom surface of the main body frame. The invention according to claim 6 is characterized in that the front end of the main body frame is bent upward to prevent a movement obstacle due to unevenness on the floor surface or the like. With this configuration, it is possible to prevent the device from falling by swinging the main body frame against a large earthquake.
[0014]
The invention of claim 7 is characterized in that a scraper made of metal or resin for removing dust in the main body frame is provided at the front part and the rear part of the tray. By adopting this configuration, dust, dust and the like in the main body frame can be removed when the tray is moved, and the tray can be easily moved. The invention according to claim 8 is characterized in that the main body frame is doubled. By taking this configuration, the range of movement of the tray can be increased.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
1A and 1B are views showing a first embodiment of the seismic isolation mechanism of the present invention, in which FIG. 1A is a plan view and FIG. 1B is a cross-sectional view taken along line bb in FIG. The present embodiment includes a main body frame 21, a pair of device support portions 22, 22, and a pair of trays 23, 23. The main body frame 21 has a rectangular cylindrical cross section, and is provided with an opening 24 having a width through which the device support portion 22 can pass in the longitudinal direction of one side and the device support portion 22 cannot escape. The length of the main body frame 21 is a length corresponding to the length of the short side of the device to be used, and a stopper 25 is fixed at a predetermined intermediate position. A decorative plate 26 is attached to the tip of the main body frame 21.
[0016]
Further, as shown in FIGS. 2A and 2B, the device support section 22 includes a device support section main body 27, a roller 28, a roller support shaft 29, and a device support bolt 30. The main body 27 has an inverted U-shaped cross section, accommodates a roller 28 in the lower center portion, and is rotatably supported by a roller support shaft 29. A device supporting bolt 30 is rotatably attached to the upper portion by a clip 31.
[0017]
The bolt 30 is provided with a stepped portion 30a for receiving a load from above. In addition, a hole 30b for engaging a pin of an adjusting lever for rotating the bolt is formed in the lower portion of the bolt 30. When the bolt 30 is attached to the device and its height is adjusted, a pin spanner 32 as shown in FIG. 2C can be rotated as an adjustment lever.
[0018]
3 (a) and 3 (b), the tray 23 is parallel to the longitudinal direction of the main body frame 21 with a rectangular plate material on both sides and a plurality of U-shaped plate materials on the inside. It is a sheet metal laminated structure which is laminated and integrated by bolts or rivets 33, and the width (lamination thickness) is slidable in the main body frame 21. The U-shaped bottom is formed with a slanted surface 23a having a loose middle recess.
[0019]
The inclined surface 23a may be a single inclined surface or an inclined surface whose angle is changed stepwise. Further, the front and rear stroke lengths may be changed. Further, a low friction material liner 34 is fixed to the lower surface of the tray 23 by bonding or screwing.
[0020]
The present embodiment configured as described above is attached one by one to the left and right of the bottom of a device such as a vending machine. As shown in FIG. 1, the device is attached to the bottom of the device 35 using a device mounting bolt 30 of the device support 22. In this case, the device support portion main body 27 of the device support portion 22 can be rotated with respect to the bolt 30 attached to the device 35, so that it does not cause unreasonableness when moving in the main body frame 21.
[0021]
In the present embodiment attached to the device 35 in this way, when an earthquake occurs, the main body frame 21 placed on the floor moves in response to the earthquake vibration. The tray 23 also moves with the main body frame 21. However, the device support 22 does not move following the tray 23 because the roller 28 rolls on the inclined surface 23a of the tray 23, so that the device 35 remains stationary due to the stationary inertia force based on the mass. When the vibration is settled, the roller 28 rolls on the inclined surface 23a and returns to the center. As a result, the device 35 also returns to the original position.
[0022]
When the earthquake is further increased and the wall 23b of the tray 23 comes into contact with the equipment support body 27, the tray 23 stops, and a crease occurs between the liner 34 on the lower surface and the body frame 21. However, the tray 23 and the device 35 remain stationary. In this case, the saucer 23 does not always return to the original position even if the earthquake stops.
[0023]
Furthermore, when an earthquake becomes larger than the above and the saucer 23 collides with the stopper 25, a crease will be produced between the main body frame 21 and the floor. In this case, even if the earthquake stops, the main body frame 21 and the device 35 do not return to their original positions. Even when the device 35 jumps up due to an earthquake, the opening width of the main body frame 21 is narrower than the device support portion main body 27, so that the device support portion main body 27 does not leave the main body frame 21.
[0024]
As described above, according to the present embodiment, even if an earthquake occurs, the device does not fall down because the device remains stationary. In addition, in this embodiment, the tray is a laminated structure of sheet metal, so that it is easy to arbitrarily set and form the angle of the slanted surface of the middle depression, the distance of the slanted surface, The seismic isolation characteristics that are optimal for the installation location can be controlled. In addition, the roller 28 of the apparatus support part 22 can be replaced with a plurality of needles or protrusions having a curved tip.
[0025]
FIG. 4 is a diagram showing a main body frame according to the second embodiment of the present invention. The present embodiment is the same as the first embodiment except for the main body frame. The difference is that the lower surface of the end of the main body frame 21 is bent upward to form the inclined surface 21a. In the present embodiment configured as described above, the movement of the main body frame 21 can be smoothed by overcoming the unevenness of the ground by the inclined surface 21a.
[0026]
FIG. 5 is a view showing a main body frame according to the third embodiment of the present invention. This embodiment is the same as the first embodiment except for the main body frame, and the difference is that a low friction material liner 36 is provided on the lower surface of the main body frame 21. The present embodiment configured as described above can smoothly move the floor surface and the main body frame 21 relative to each other, and can prevent the device from overturning even against a large earthquake.
[0027]
FIG. 6 is a view showing a saucer according to the fourth embodiment of the present invention. This embodiment is the same as the first embodiment except for the tray, and the difference is that a scraper 37 made of metal or resin is provided at the front and rear of the tray 23. The present embodiment configured as described above can remove dust, dust and the like in the body frame 21 when the tray 23 is moved, and can maintain a good contact environment between the tray 23 and the body frame 21.
[0028]
FIG. 7 is a diagram showing a main body frame according to the fifth embodiment of the present invention. This embodiment is the same as the first embodiment except for the main body frame, except that the main body frame 21 is doubled and the inner main body frame 21B is slidably provided in the outer main body frame 21A. That is. The present embodiment configured as described above can increase the amount of movement of the tray 23 within the main body frame 21 and cope with a larger earthquake.
[0029]
【The invention's effect】
According to the seismic isolation device of the present invention, it can be applied to various structures and installation locations without being affected by the physical structure such as the center of gravity position of the device body, the mounting position of the support portion, and the conditions of the installation location. And seismic isolation direction control. Moreover, it can manufacture at low cost by making a saucer into the laminated structure of a sheet metal.
[Brief description of the drawings]
1A and 1B are views showing a first embodiment of the present invention, in which FIG. 1A is a plan view and FIG. 1B is a cross-sectional view taken along line bb in FIG.
FIGS. 2A and 2B are diagrams showing a device support portion according to the first embodiment of the present invention, in which FIG. 2A is a longitudinal sectional view, FIG. 2B is a sectional view taken along line bb in FIG. Indicates a pin spanner.
FIGS. 3A and 3B are diagrams showing a saucer according to the first embodiment of the present invention, in which FIG. 3A is a longitudinal sectional view, and FIG. 3B is a view as viewed from an arrow Z in FIG.
FIG. 4 is a diagram showing a main body frame according to a second embodiment of the present invention.
FIG. 5 is a diagram showing a main body frame according to a third embodiment of the present invention.
FIG. 6 is a view showing a saucer according to a fourth embodiment of the present invention.
7A and 7B are views showing a main body frame according to a fifth embodiment of the present invention, in which FIG. 7A is a longitudinal sectional view, and FIG.
FIG. 8 is a view showing a conventional seismic isolation device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 20 ... Seismic isolation device 21 ... Main body frame 21a ... Inclined surface 21A ... Outer main body frame 21B ... Inner main body frame 22 ... Equipment support part 23 ... Receptacle 23a ... Inclined face 24 ... Opening 25 ... Stopper 26 ... Dressing board 27 ... Equipment support part Body 28 ... Roller 29 ... Roller support shaft 30 ... Equipment support bolt 30a ... Step 30b ... Hole 31 ... Clip 32 ... Pin spanner 33 ... Bolt or rivet 34, 36 ... Liner 35 ... Equipment 37 ... Scraper

Claims (8)

A plate material of a predetermined length is bent into a rectangular tube shape, a central portion of one side thereof is open in the longitudinal direction, a main body frame placed on the floor with the opening portion facing up, and the main body frame In a seismic isolation device comprising a pair of trays slidably provided therein, a pair of device support portions that support the device and are movable on the tray, and
The tray is integrated by laminating a plurality of U-shaped plate materials on both sides with a rectangular plate material inside and parallel to the longitudinal direction of the main body frame, and has a hollow in the U-shaped bottom. A seismic isolation device characterized by forming a gentle inclined surface and setting the angle and distance of the inclined surface appropriately to obtain desired seismic isolation characteristics. 2. The seismic isolation device according to claim 1, wherein a liner of a low friction material is attached to the bottom surface of the tray. The seismic isolation device according to claim 1, wherein the device support portion has an adjustment function capable of adjusting a device installation height, and the adjustment lever is removable. The means capable of moving on the inclined surface of the tray of the device support part is any one of a roller rotatably supported, a plurality of rotatable needles, or a protrusion having a curved tip. The seismic isolation device according to claim 1, wherein the seismic isolation device is provided. 2. The seismic isolation device according to claim 1, wherein a liner of a low friction material is attached to the bottom surface of the main body frame. 2. The seismic isolation device according to claim 1, wherein a tip of the main body frame is bent upward to prevent a movement obstacle due to unevenness of a floor surface or the like. The seismic isolation device according to claim 1, wherein a scraper made of metal or resin for removing dust in the main body frame is provided at a front portion and a rear portion of the tray. The seismic isolation device according to claim 1, wherein the main body frame is doubled.

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