JPH11103957A - Earthquake isolation device for housing furniture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the overturning of a housing furniture corresponding to a large shake caused by the generation of an earthquake, or the like without increasing the size of a device by pivotally fitting a housing furniture main body part with a horizontal axis respectively coaxial to a pair of supporters erected from a base and hang-holding the housing furniture main body part around the horizontal axis. SOLUTION: At the time of the occurrence of an earthquake, as an intense vibration is generated in the direction of an arrow F1 by the earthquake, the base 8 and a supporter 9 start vibration. When the horizontal axis 10 is vibrated in the direction of an arrow F2 then, a main body part 5 starts rocking as shown by two-dot oblique lines with the axis 10 in a center. As the energy of shaking by the earthquake is absorbed as kinetic energy caused by rocking like this, the part 5 never overturns down by directly receiving the energy of a large shape caused by the earthquake. In addition, as a rotary shaft core is at a position higher than the nearly center position of a vertical direction when the part 5 rocks, the upper part of the part 5 never rocks large.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation device for a storage fixture capable of preventing a storage fixture such as a locker, a cabinet, a refrigerator or the like from falling down when an earthquake occurs.

[0002]

2. Description of the Related Art Conventionally, in order to prevent storage fixtures such as lockers and cabinets from falling down in the event of an earthquake, floors and walls are connected to storage fixtures with seismic fittings or the like. The fall was prevented by absorbing the shaking of the earthquake by using a seismic isolation device as disclosed in the official gazette or Japanese Patent Application Laid-Open No. 63-97775.

[0003]

However, in the former method, it is necessary to embed anchor bolts or the like on the floor or wall surface, and once the anchor bolts or the like are buried on the floor or wall surface, the layout becomes poor. When the storage furniture is moved due to a change or the like, there is a problem that the aesthetic appearance is impaired because anchor bolts and the like remain on the floor surface and the wall surface.

Further, in the latter method, in order to prevent the seismic shake from increasing in any of the seismic isolation devices, and to prevent the seismic device from falling down even when a large moment is applied to a column or a horizontal frame, the following method is required. It was necessary to increase the size of the base supporting the columns.

According to the present invention, there is provided a storage fixture which can effectively prevent the storage fixture from falling down in response to a large shaking caused by an earthquake or the like without increasing the size of the apparatus. The purpose is to provide a seismic device.

[0006]

In order to achieve the above object, a seismic isolation apparatus for a storage fixture according to the present invention comprises a storage fixture main body having a horizontal axis which is coaxial with a pair of columns standing upright from a base. It is characterized in that the storage fixture main body is hung around the horizontal axis while being attached to the shaft. According to this feature, if the storage fixtures vibrate in the front-rear direction on the floor due to the occurrence of the earthquake, the storage fixture main body suspended on the base and the column swings around the horizontal axis, so that the shaking caused by the earthquake may occur. Since the energy is absorbed as kinetic energy due to the rocking, the main body does not fall down by directly receiving the energy of the large rocking due to the earthquake.

According to the seismic isolation device for a storage fixture of the present invention, an opposing portion facing a predetermined lower portion of the storage fixture main body is provided at a predetermined location of the base, and a predetermined lower portion of the storage fixture main body or the base is provided. It is preferable that a cushioning member for absorbing an impact be provided on one of the opposing surfaces of the opposing portions. With this configuration, the predetermined portion of the lower portion of the main body collides with the opposing portion as the main body oscillates, and the impact force due to the collision is absorbed by the cushioning member. And it is difficult to fall.

In the seismic isolation device for a storage fixture according to the present invention, an opposing portion is provided at a predetermined location of the base so as to oppose a predetermined lower portion of the storage fixture main body, and the base is slidable on the floor surface. Is preferred. In this manner, the predetermined portion of the lower portion of the main body collides with the opposing portion in accordance with the swing of the main body, and the impact force due to the collision is absorbed by sliding on the floor of the base. The swing of the part is effectively absorbed, and it is difficult to fall.

[0009] In the seismic isolation device for a storage fixture according to the present invention, it is preferable that the opposing surfaces of the base and the storage fixture are provided so as to be perpendicular to each other at the time of a collision. By doing so, the collision energy between the base and the storage fixture is effectively transmitted in the moving direction of the base, and the base is moved more largely, so that the swing of the main body can be suppressed more effectively.

In the seismic isolation device for a storage fixture according to the present invention, the opposing portion of the base is provided so as to collide with a predetermined portion of a lower part of the storage fixture main body when the storage fixture main body is substantially upright. Is preferred. By doing this,
A large impact force can be obtained at the time of collision between the predetermined portion of the main body portion and the opposing portion of the base, and this impact force can be absorbed, so that the swinging of the main body portion can be more effectively suppressed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a cabinet 1 (storage fixture) as a first embodiment of the present invention. I have. The cabinet 1 has a main body portion 5 formed in a box shape whose front surface is opened by two side plates 2, a top plate 3, a bottom plate 4, and a rear plate (not shown), and the main body portion 5 is rotatable. It consists of a seismic isolation device 6 to be suspended, and drawers 7 are housed in the main body 5 in three upper and lower stages.

As shown in FIGS. 1 and 2, the base isolation device 6 includes a base 8 placed on a floor 11, and a support 9 having a predetermined height standing on the left and right sides of the base 8. The main body 5 is rotatably suspended on the base 8 via horizontal shafts 10 and 10 which extend inward above the support posts 9.

In this embodiment, the main body 5 normally has a predetermined gap formed between the lower surface of the bottom plate 4 of the main body 5 and the upper surface of the base 8, and rotates around the horizontal axis 10 of the main body 5. The base 8 and the bottom plate 4 are suspended by the horizontal shaft 10 at a substantially central position in the front-rear direction in the upper part of the side plate 2 so that the base 8 and the bottom plate 4 are not buffered even when moving.

Next, at the time of the occurrence of the earthquake, the cabinet 1,
The movement of the floor 11 and the like will be described with reference to FIG. 3. First, as a severe vibration is generated on the floor 11 in the direction of arrow F <b> 1 in the figure due to an earthquake or the like, the base 8 and the support 9 start to vibrate.

When the horizontal shaft 10 vibrates in the direction of arrow F2 in the figure, the main body 5 starts to swing about the horizontal shaft 10 as shown by a two-dot chain line. As described above, the energy of the shaking caused by the earthquake is absorbed as the kinetic energy of the shaking, so that the main body 5 does not directly receive the energy of the large shaking caused by the earthquake and fall. Further, when the main body 5 swings, the upper portion of the main body 5 does not largely swing because the rotation axis is located at a position higher than the substantially center position in the vertical direction.

FIG. 4 shows a storage fixture 1 as a second embodiment of the present invention. Storage fixture 1 in this embodiment
Means that the rear side faces the wall surface 12 and the rear side
2 is provided so as to secure a predetermined space.

At the rear side of the base 8 of the seismic isolation device 6, that is, at the wall 12 side, as shown in FIG.
A stopper plate 13 (opposing portion) which opposes the lower surface of the main body 5 and regulates the swing of the main body portion 5 is erected perpendicularly to the floor surface 11. A cut-out portion 14 capable of accommodating the stopper plate 13 is formed in a lower portion of a rear surface of the main body 5, and the rear surface of the stopper plate 13 is configured to be flush with the rear surface of the main body 5 in a normal state.

On the opposing surface 13a of the stopper plate 13, a cushioning member 15 for absorbing an impact is provided.
It is attached so as to be interposed between the two. Normally, the buffer member 15 is provided so that a large load is not applied from the facing surface 14a.

The cushioning member 15 in this embodiment absorbs an impact to such an extent that no deformation or the like occurs when the opposing surface 14a and the opposing surface 13a collide with each other. A cushioning member having a hardness capable of transmitting an impact to the base 8 for sliding is used.

Next, at the time of the earthquake, the cabinet 1,
The movement of the floor 11 and the like will be described with reference to FIG. 5. First, when a strong vibration occurs in the direction of arrow F1 in the figure due to an earthquake or the like on the floor 11, the base 8 and the support 9 start to vibrate.

Next, when the horizontal shaft 10 vibrates in the direction of arrow F2 in the figure, the main body 5 starts to swing about the horizontal shaft 10. Here, for example, when the main body portion 5 is swung in the direction indicated by the two-dot chain line, the main body portion 5 starts to swing in the opposite direction due to the action of the opposite vibration, gravity, and the like. And the main body 5 is the floor 1
When the position is substantially perpendicular to the position 1, the opposing surface 14a of the notch 14 collides with the opposing surface 13a of the stopper plate 13, and the swing of the main body 5 is restricted.

Although the impact force of the facing surface 14a in the direction of the wall surface 12 is slightly absorbed by the cushioning member 15, it is transmitted to the entire seismic isolation device 6 via the stopper plate 13, and the entire cabinet 1 is moved in the direction of the arrow in the figure. Moving. Hereinafter, while the vibration is continuing, the cabinet 1 repeatedly performs the above-described operation.

When the main body 5 is in the substantially upright state as described above, the collision between the opposing surface 14a and the cushioning member 15 occurs, and the opposing surface 14a and the cushioning member 15 make contact with the floor surface 11. Since the cabinet 1 is provided vertically, the cabinet 1 can be effectively moved in a desired direction and the swing of the main body 5 can be effectively suppressed, so that a large vibration due to an earthquake can be reliably absorbed.

As described above, when the vibration F1 of the cabinet 1 in the front-rear direction occurs on the floor surface 11, the cabinet 1 is gradually moved toward the wall surface 12 and the rear surface of the cabinet 1 approaches the wall surface 12. When the cabinet 1 approaches the wall surface 12, the rear surface of the cabinet 1 and the wall surface 12 repeatedly collide with each other by the rearward movement of the cabinet 1. Of the cabinet 1 is caught on the wall surface 12 even if the cabinet 1
Can effectively be prevented from falling.

FIG. 6 shows a cabinet 1 as a third embodiment of the present invention. The difference between the cabinet 1 of the present embodiment and the cabinet 1 of the second embodiment is that the front portion of the base 8 extends a predetermined distance from the front surface of the cabinet 1 and a stopper plate is provided on the front end of the base 8. 13 in that a second stopper plate 16 connected to the second stopper plate 13 is formed.

The rear surface 16 of the second stopper plate 16
a and the opposing surface 17 of the main body 5, a stopper plate 13
A space larger than the gap between the opposing surface 13a of the notch 14 and the opposing surface 14a of the notch portion 14 is formed, and on the rear surface 16a, the main body 5 is regulated at the position indicated by the two-dot chain line in the figure. The buffer member 18 is fixed.

The cabinet 1 thus configured is
When a strong vibration is generated on the floor 11 in the direction of arrow F1 in FIG. 6 due to an earthquake or the like, the same operation and effect as in the above-described embodiment are obtained, but the swing of the lower part of the main body 5 in the front-rear direction is caused by the stopper plate. 13 and the buffer member 18 of the second stopper plate 16, for example, the vibration of the floor 11 and the swing of the main body 5 resonate, and the main body 5 is violently violated. Swinging can be effectively prevented.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention.

For example, in the above-described second and third embodiments, the cushioning member 15 has a hardness capable of transmitting an impact to the base 8 in order to slide the base 8 against the floor 11. However, it is not particularly necessary to slide the base 8 on the floor surface, and it is also possible to use a cushioning member capable of absorbing all impact forces.

In this embodiment, the stopper plate provided on the base and the lower portion of the main body 5 are formed so as to face each other. For example, a stopper plate facing a predetermined portion of the base is provided at the lower portion of the main body. Even if it is provided, its mounting position and the like are arbitrary.

[0031]

The present invention has the following effects.

(A) According to the first aspect of the present invention, when an earthquake occurs in the front-back direction of the storage fixture on the floor due to the occurrence of an earthquake,
Since the storage fixture body suspended from the base and the column swings around the horizontal axis, the energy of the shaking caused by the earthquake is absorbed as the kinetic energy of the swing. There is no such thing as falling down by receiving it directly.

(B) According to the second aspect of the present invention, the predetermined portion of the lower portion of the main body collides with the opposing portion as the main body swings, and the impact force due to the collision is absorbed by the cushioning member. In addition, the swing of the main body is effectively suppressed, and it is difficult to fall down.

(C) According to the third aspect of the present invention, the predetermined portion of the lower portion of the main body collides with the opposing portion as the main body swings, and the impact force caused by the collision slides on the floor of the base. As a result, the swing of the main body is effectively absorbed, and it is difficult to fall.

(D) According to the fourth aspect of the invention, the collision energy between the base and the storage fixture is effectively transmitted in the moving direction of the base, and the base is moved more.
Swing of the main body can be suppressed more effectively.

(E) According to the fifth aspect of the present invention, a large impact force can be obtained at the time of collision between the predetermined portion of the lower portion of the main body and the opposing portion of the base, and this impact can be absorbed. Swing of the part can be suppressed more effectively.

[0037]

[Brief description of the drawings]

FIG. 1 is a perspective view of a cabinet to which a seismic isolation device according to a first embodiment of the present invention is applied.

FIG. 2 is a front view of the cabinet of FIG. 1;

FIG. 3 is a side view showing the operation of the cabinet of FIG. 1 when an earthquake occurs.

FIG. 4 is a perspective view of a cabinet to which a seismic isolation device as a second embodiment of the present invention is applied.

FIG. 5 is a partially cutaway side view showing the operation of the cabinet of FIG. 4 when an earthquake occurs.

FIG. 6 is a partially broken side view showing an operation of a cabinet to which a seismic isolation device as a third embodiment of the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabinet (storage fixture) 2 Side plate 3 Top plate 4 Bottom plate 5 Main part 6 Seismic isolation device 7 Drawer 8 Base 9 Prop 10 Horizontal axis 11 Floor surface 12 Wall surface 13 Stopper plate (facing portion) 13a Opposing surface 14 Notch portion 14a Opposing surface 15, 18 cushioning member 16 second stopper plate (facing portion) 17 facing surface

Claims (5)

[Claims] 1. A storage fixture main body is mounted on a pair of columns standing upright from a base with horizontal axes coaxial with each other, and the storage fixture main body is suspended around the horizontal axis. Seismic isolation device for storage fixtures. 2. A predetermined portion of the base is provided with an opposing portion opposing a predetermined lower portion of the storage fixture main body portion, and a predetermined lower portion of the storage fixture main body portion or one of the opposing portions of the base is opposing. The seismic isolation device of a storage fixture according to claim 1, wherein a shock absorbing member is provided on the surface. 3. The storage device according to claim 1, wherein an opposing portion is provided at a predetermined position of the base so as to oppose a predetermined lower portion of the storage fixture main body, and the base is slidable with respect to a floor surface. Seismic isolation device for storage fixtures. 4. The seismic isolation device for a storage fixture according to claim 2, wherein the opposing surfaces of the base and the storage fixture are provided so as to be perpendicular to each other in the event of a collision. . 5. The opposed portion of the base is provided so as to collide with a predetermined portion of a lower part of the storage fixture main body when the storage fixture main body is substantially upright.
The seismic isolation device for storage fixtures according to any of the above.