JPH11266951A - Overturning-preventing display table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the overturning of displayed articles by suspending a display table from an upper side to show a sufficient vibration absorbing function even with respect to vibration of a large amplitude. SOLUTION: A pedestal 14 for mounting the displayed article 12 is provided and is suspended from a ceiling 16, which is arranged over it at a proper interval, in the state of being freely rockable through a suspending member 18 of a prescribed length L. The member 18 uses a wire for rotatably connecting both end parts to pins 22 and 24. Concerning the pedestal 14, a tempered glass 26 is put around it to close an upper end with a top plate 28 and the member 18 is connected to the center of the plate 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fall prevention display stand which suppresses swinging of the display stand caused by an earthquake and prevents the display articles installed on the display stand from falling over.

[0002]

2. Description of the Related Art Conventionally, display stands include showcases for sale of goods and showcases only for exhibitions, such as those in museums. The display stand will rock,
There is a risk that the product or other display items such as display items may be damaged. Therefore, it is conceivable to interpose a seismic isolation device between the display stand and the floor surface to reduce input from the floor surface, thereby preventing the display item from falling down.

[0003]

However, even when a seismic isolation device is interposed between the display stand and the floor surface, the performance of the seismic isolation device is limited, and the floor surface on which the displayed items are prevented from falling over is limited. The input amplitude from the input is relatively small.
For this reason, the input from the floor due to a large earthquake with a large amplitude, etc., exceeds the allowable range of the seismic isolation device with the above seismic isolation device, and a sufficient seismic isolation effect cannot be obtained. There is a problem that the product falls and is damaged.

Accordingly, the present invention has been made in view of such a conventional problem, and an external force acting on a display product in a direction orthogonal to a direction normal to a pedestal for hanging the display product by hanging the display table from above. It is an object of the present invention to provide a fall-prevention display stand that is capable of exhibiting a sufficient fall-prevention function even for vibrations of large amplitude.

[0005]

According to a first aspect of the present invention, there is provided a fall-prevention display stand having a pedestal on which items to be displayed are mounted, and the pedestal being disposed above the pedestal. It is swingably suspended from the holding member via a suspension member having a predetermined length.

According to a second aspect of the present invention, there is provided a fall-prevention display stand including a pedestal on which a display article is placed, and a frame surrounding the pedestal and disposed on a floor surface. Is suspended swingably via a suspension member having a predetermined length.

Further, in the fall prevention display stand according to claim 3 of the present invention, a seismic isolation device is interposed between the frame and a floor on which the frame is arranged.

Further, in the fall prevention display stand according to a fourth aspect of the present invention, the suspension member is constituted by attaching only a spring member or a spring member and a damping member.

The operation of the fall prevention display stand of the present invention having the above structure will be described below. According to the first aspect, the pedestal on which the display article is placed is attached to the holding member via a hanging member having pin joints on the upper and lower sides. Since it is swingably suspended, by adjusting the length of the suspension member appropriately, the pedestal can be relatively displaced in the horizontal direction with a large displacement with respect to the holding member, and at the same time, the input to the pedestal can be performed. Is converted to the pedestal normal direction, so even if the holding member is rocked by the earthquake,
The input that would cause the display article placed on the pedestal to fall is prevented, and even when the amplitude is large due to a large earthquake, the display article can be prevented from falling and protected.

[0010] In the second aspect, the pedestal on which the display item is placed is suspended from the frame arranged on the floor surface.
The pedestal can be displaced in the horizontal direction with respect to the frame, and at the same time, the input to the pedestal is converted to the pedestal normal direction.
Therefore, even when the frame is swung due to the earthquake, it is possible to prevent and prevent the display articles placed on the pedestal from falling over, similarly to the first aspect. In addition, since the pedestal is suspended in the frame, the pedestal and the frame can be moved as one unit. By moving the frame, the display location can be easily rearranged.

Further, in the present invention, a seismic isolation device is interposed between the frame and the floor on which the frame is disposed. Therefore, when an earthquake occurs, the frame is connected to the frame via the seismic isolation device. Since the attenuated vibration is input, the swing of the frame can be reduced. Since the pedestal is suspended via the suspension member on the frame in which the swing is reduced in this way, the effect of preventing the display articles placed on the pedestal from falling is increased.

Furthermore, in the present invention, the hanging member is constituted by a spring member alone or a spring member and a damping member arranged in parallel. The mass damper can be configured with a mass of
By appropriately setting the spring constant and the damping performance of the damper by the spring member, it is possible to further increase the overturn prevention effect of the displayed product on the pedestal.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing a first embodiment of a fall prevention display stand of the present invention.

That is, the fall prevention display stand 10 shown in FIG. 1 shows a basic structure, and includes a pedestal 14 on which a display item 12 is placed.
The pedestal 14 is swingably suspended from a ceiling 16 as a holding member which is disposed above the pedestal 14 at an appropriate interval via a suspension member 18 having a predetermined length L.
Are arranged above the floor surface 20 by an appropriate height h.

The hanging member 18 may be a string-like body having flexibility as a whole, and may be a pin such as a ball joint 22 or 24 or a universal joint connected to be rotatable at both ends as shown in the figure. As long as joining is performed, a wire or a steel rod having high bending rigidity and shear rigidity can be used. The pedestal 14 has a tempered glass 26 around it.
The upper end is closed by a top plate 28 around the above, and the hanging member 18 is connected to the center of the top plate 28, that is, on the center of gravity.

Therefore, the fall prevention display stand 1 of this embodiment
In the case of 0, the pedestal 14 on which the display item 12 is placed is suspended swingably on the ceiling 16 via the suspension member 18, so the length L of the suspension member 18 must be set appropriately. Accordingly, the pedestal 14 can be relatively displaced in the horizontal direction with a large displacement amount with respect to the ceiling 16, and at the same time, the pedestal 1
4 will be converted in the direction of the pedestal normal. For this reason, even when the earthquake is input to the building and the ceiling 16 is rocked, the input that would cause the display item 12 placed on the pedestal 14 to fall is prevented, and the amplitude is large in the event of a large earthquake. In addition, the display item 12 can be protected from falling down.

Even when the input earthquake is excessive and its amplitude is large, the relative movement between the ceiling 16 and the pedestal 14 is large, so that the pedestal 14 swings sufficiently in response to the large amplitude. It can be kept small. For this reason, the display article 12 placed on the pedestal 14 can be prevented from falling over, the damage or the rate of breakage can be greatly reduced, and the protection function can be significantly improved. Of course, in this embodiment, the length L of the suspending member 18 is set in advance to a length at which the vibration system of the pendulum operation having the mass of the load of the pedestal 14 and the display item 12 does not resonate with the vibration input by the earthquake. Needless to say.

FIG. 2 is a front view of a fall prevention display stand 10a showing a second embodiment of the present invention. In this embodiment, the same components as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. State.

That is, the fall prevention display stand 10 of this embodiment
a, a frame 30 mounted on a floor surface 20 is provided, and a pedestal 14
Is swingably suspended. The frame 30 includes several upper and lower frames 30a equally arranged so as to surround the pedestal 14 at appropriate intervals in the vertical and horizontal directions, and a horizontal frame 30b connecting the upper ends of the upper and lower frames 30a. The hanging member 18 is connected to the center of the horizontal frame 30b.

Accordingly, in this embodiment, the pedestal 14 is suspended and supported from the frame 30 disposed on the floor surface 20, so that the pedestal 14 has a horizontal relative displacement with respect to the frame 30 as in the above-described embodiment. Pedestal 1 as soon as possible
4 will be converted in the direction of the pedestal normal. For this reason, even when the earthquake is input to the building and the ceiling 16 is rocked, the input that would cause the display item 12 placed on the pedestal 14 to fall is prevented, and the amplitude is large in the event of a large earthquake. In addition, the display item 12 can be protected from falling down. Also, since the pedestal 14 was suspended in the frame 30, the pedestal 14 and the frame 30 were
Since the display unit can be moved as one unit, the display location can be easily rearranged on the floor surface 20 by moving the frame 30.

FIG. 3 is a front view of a fall prevention display stand 10b according to a third embodiment of the present invention, in which the same components as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. State.

That is, in this embodiment, the frame 30
, And the floor 20 on which the frame 30 is disposed, with the seismic isolation device 40 interposed therebetween. In this case, a bottom plate 32 is provided on the frame 30 and the bottom plate 3
The seismic isolation device 40 is configured between the floor 2 and the floor 20.
As a basic structure of the seismic isolation device 40, a plurality of springs 42 are arranged below the bottom plate 32 so as to stably support the frame 30, and these springs 42 are disposed between the bottom plate 32 and the floor surface 20. By interposing, the vertical displacement and the horizontal displacement acting between the frame 30 and the floor surface 20 are absorbed.

Therefore, in this embodiment, when an earthquake occurs, the vibration attenuated through the seismic isolation device 40 is input to the frame 30, and the frame 3
0 swing can be reduced. And, since the pedestal 14 is suspended via the suspension member 18 on the frame 30 in which the swing is reduced in this way, the swing generated on the pedestal 14 is greatly reduced as compared with the case where the swing is directly suspended on the building side. Therefore, the effect of preventing the display items 12 placed on the pedestal 14 from overturning can be increased.

The above-described seismic isolation device 40 is constructed using a spring 42 to reduce the vertical and horizontal vibrations. However, since the vibration caused by an earthquake is mainly horizontal vibration, the seismic isolation device 40 is used. Can be configured using vibration-isolating rubber, bearings such as balls and rollers, and horizontal rolling members such as casters. Further, as shown in FIG. 4, the horizontal seismic isolation function of the frame 30 is further improved, and
Seismic isolation device 40a with added positioning function for frame 30
Can also be used.

That is, in the seismic isolation device 40a shown in FIG. 4, a sliding plate 52 having a smooth surface is provided on the floor surface 20 on which the frame 30 is disposed, and the bottom plate of the frame 30 is provided on the sliding plate 52. 32 and a plurality of sliding cases 5
4 and the bottom plate 32 is placed on these sliding cases 54. A slider 54a made of a bottom friction material such as Teflon is attached to the lower side of the sliding case 54 in order to reduce the coefficient of friction with the sliding plate 52. In the present embodiment, the sliding case 54 is filled with a viscoelastic material (for example, rubber) 56, while the bottom plate 32 is provided with a plurality of casters 58 for movement. Sliding case 54
Is mounted on the inner rubber 56 in an engaged state. Further, the sliding case 54 is provided with a support 6 erected at the center of the sliding plate 52.
0 through a spring 62.

Therefore, in the seismic isolation device 40a, each sliding case 54 relatively slides on the sliding plate 52 with a low coefficient of friction due to the horizontal vibration component of the earthquake, thereby effectively reducing the horizontal vibration input to the frame 30. Can be reduced. When the horizontal vibration is removed after the earthquake has subsided, the sliding case 54 is connected to the support column 60 via the spring 62, so that the frame 30
Is automatically returned to the position where the spring forces of the two are balanced, that is, the initial position. Further, the rubber 56 filled in the sliding case 54
Thereby, horizontal and vertical micro-vibrations transmitted from the floor surface 20 to the frame 30 can be cut off.

FIG. 5 is a front view of a fall prevention display stand 10c according to a fourth embodiment of the present invention. The same components as those in the above embodiment are denoted by the same reference numerals, and redundant description will be omitted.

That is, in this embodiment, the suspension member 18
Are constituted, for example, by a spring member 18a and a damping member 18b arranged in parallel with each other. In this embodiment, a tension coil spring or the like is used as the spring member 18a, and a damper is used as the damping member 18b.

Therefore, in this embodiment, the suspension member 18
Is allowed to expand and contract by the spring member 18a.
A mass damper is configured using the mass 4 and the display item 12 as a mass, and the vibration in the expansion and contraction direction can be damped by the damping member 18b. That is, the suspension member 18
It expands and contracts not only when the pedestal 14 and the frame 30 are vertically displaced but also when the pendulum is moved by the relative displacement in the horizontal direction. For this reason, the suspension member 18 composed of the spring member 18a and the damping member 18b
By appropriately setting the spring constant of the spring member 18a and the damping performance of the damper, the vertical vibration component and the horizontal vibration component of the floor vibration are also effectively attenuated, and the swing of the pedestal 14 is significantly reduced. be able to.

In this embodiment, the case where the frame 30 is supported via the seismic isolation device 40 is shown. However, in the case of the second embodiment shown in FIG. Even in the first embodiment in which the frame 30 shown in FIG. 1 is not used, it goes without saying that the present invention is applied to each of the hanging members 18 to exhibit a high effect. Further, in this embodiment, the spring member 18a and the damping member 1
8b are arranged in parallel, the vibration damping effect can be obtained by arranging the spring member 18a and the damping member 18b in series.
The suspension member 18 can also be constituted only by 8a.

[0031]

As described above, in the fall prevention display stand according to the first aspect of the present invention, the pedestal on which the display article is to be mounted is slidably suspended from the holding member via the suspension member. Therefore, by appropriately adjusting the length of the hanging member, the pedestal can be relatively displaced in the horizontal direction with a large displacement with respect to the holding member, and at the same time, the input to the pedestal is in the normal direction of the pedestal. Because of the conversion, even if the holding member is swung due to the earthquake, input that would cause the display item placed on the pedestal to overturn is prevented, and even if the amplitude is large due to a large earthquake, the display item Can be protected from falling over.

Therefore, even when the amplitude is large in the event of a large earthquake, the swing of the pedestal can be suppressed sufficiently in response to the large amplitude, so that the display articles placed on the pedestal are prevented from falling over. As a result, the rate of damage or breakage can be greatly reduced, and the protection function can be significantly improved.

In the fall-prevention display stand according to claim 2 of the present invention, the pedestal on which the display article is placed is suspended from the frame arranged on the floor, so that the pedestal is attached to the frame. The input to the pedestal is converted to the pedestal normal direction at the same time as the horizontal relative displacement becomes possible, so even if the holding member is rocked by the earthquake, the display item placed on the pedestal is overturned. Such input is prevented, and even when the amplitude is large due to a large earthquake, it is possible to prevent and prevent the display item from falling down.

Therefore, even when the frame is swung by the earthquake, the swing of the pedestal is suppressed, and the display articles placed on the pedestal can be prevented from falling down and protected. In addition, since the pedestal is suspended in the frame, the pedestal and the frame can be moved as one unit, so that the display location can be easily rearranged by moving the frame.

Further, in the fall prevention display stand according to claim 3 of the present invention, an earthquake is generated because the seismic isolation device is interposed between the frame and the floor on which the frame is disposed. In this case, the vibration input to the frame is attenuated through the seismic isolation device, so that the swing of the frame can be reduced. Since the pedestal is suspended from the frame in which the swing is reduced in this manner via the suspending member, the swing generated on the pedestal can be further reduced, and the display articles mounted on the pedestal can be displayed. The fall prevention effect can be increased.

Furthermore, in the fall prevention display stand according to claim 4 of the present invention, the suspension member is constituted by only a spring member or a spring member and a damping member provided in parallel. Since the mass damper having the pedestal and the display items as masses can be configured by allowing the lowering member itself to expand and contract, the effect of reducing the sway of the pedestal can be further increased.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a fall prevention display stand of the present invention.

FIG. 2 is a front view showing a fall prevention display stand according to a second embodiment of the present invention.

FIG. 3 is a front view showing a third embodiment of a fall prevention display stand of the present invention.

FIG. 4 is an enlarged sectional view showing another embodiment of the seismic isolation device used in the third embodiment of the present invention.

FIG. 5 is a front view showing a fall prevention display stand according to a fourth embodiment of the present invention.

[Explanation of symbols]

 10, 10a, 10b, 10c Fall prevention display stand 12 Displayed product 14 Pedestal 16 Ceiling (holding member) 18 Hanging member 18a Spring member 18b Damping member 20 Floor surface 30 Frame 40, 40a Seismic isolation device

Claims (4)

[Claims] 1. A pedestal on which a display item is placed, wherein the pedestal is swingably suspended from a holding member disposed above the pedestal via a suspension member having a predetermined length. A fall prevention display stand. 2. A pedestal on which a display item is placed, and a frame surrounding the pedestal and disposed on a floor surface, wherein the pedestal is swung by a hanging member having a predetermined length on the frame. A fall-prevention display stand characterized by being freely suspended. 3. The fall prevention display stand according to claim 2, wherein a seismic isolation device is interposed between the frame and a floor on which the frame is arranged. 4. The fall-prevention display stand according to claim 1, wherein the suspension member is constituted by only a spring member or a combination of a spring member and a damping member.