JP2005127381A - Base isolation device in shelf for article display or in shelf for article storage/display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base isolation device in a shelf for article display in a convenience store, department store, general shop or the like, or in a shelf for article storage/display in an art museum and general homes. <P>SOLUTION: The base isolation device consists of a supporting member 2 and a damper member 3 which are arranged with a plurality of spaces on the lower surface of a shelf 1. In the supporting member 2, a movable frame 5 is placed on a floor 4. A plurality of small hard spheres with a small diameter is arranged on the floor 4 in a space of the movable frame 5. While a spherical holding iron plate 7 formed bigger than the movable frame 5 is placed on the small hard sphere 6, the supporting member 2 is formed to be fixed on the lower surface of the shelf 1. The damper member 3 is formed by arranging one or more elastic spheres or elasto-plastic spheres 21 on the floor 4 in a damper coated plate 22 fixed onto the lower surface of the shelf 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a seismic isolation device in a shelf for displaying goods at a convenience store, a department store, a general store, or the like, a shelf for storing goods in a general household, or a display shelf at a museum or the like.

Conventionally, most seismic isolation devices have not been installed in shelves for display of goods at convenience stores, department stores, general stores, etc., or shelves for storing goods in general households, or display shelves in museums, etc. Currently, only seismic devices that only fix the shelf to the wall or ceiling surface via a support bar are installed.

The recent development of seismic isolation devices for art objects such as pots and sculptures was published in the Nikkei Sangyo Shimbun on April 16, 2003.
Nikkei Sangyo Shimbun "A Mini Seismic Isolation System to Protect Art" published on April 16, 2003

The newspaper article disclosed in Non-Patent Document 1 was developed by a team at the Disaster Prevention Laboratory, Faculty of Engineering, Kanazawa University. And the structure is seismic isolation by allowing ball bearings attached to the tips of the four legs fixed at the four corners of the bottom of the art shelf to slide on a metal plate processed into a concave curved surface. It is intended to plan.

However, the one disclosed in Non-Patent Document 1 requires a ball bearing to be pivotably attached to the tip of the leg and a metal dish processed into a concave curved surface. Both of the work for mounting in a pivotable manner and the work for working the metal dish into a concave curved surface are required to have extremely high accuracy, and therefore there is a problem that the cost becomes high.

The present invention has been made to solve the above-mentioned problems, and is manufactured for a product display having a sufficient cost-isolating effect at low cost by manufacturing most members in combination with inexpensive materials that are commercially available. It is intended to provide a seismic isolation device in a shelf for storing goods or a shelf for storing goods.

The present invention relates to a shelf for displaying goods, comprising a support member disposed on the lower surface of the shelf with a plurality of intervals and a damper member disposed with a plurality of intervals, or an article storage / A seismic isolation device for a display shelf,
The support member is mounted on a floor surface with a movable frame formed in a circular or polygonal frame, and a large number of small hard spheres having a small diameter are disposed on the floor surface in the space portion of the movable frame, In addition, a spherical pressing iron plate that is larger than the movable frame and formed in a circular or polygonal shape is placed on each small hard sphere, and the spherical pressing iron plate is pressed to such an extent that each small hard sphere can rotate and move. Formed integrally with the lower surface of the shelf with pressure,
The damper member is formed by disposing at least one elastic sphere or elastic-plastic sphere on a floor surface in a damper cover plate fixed to the lower surface of the shelf, and the damper cover plate includes: A circular or polygonal planar portion for connecting and fixing to the lower surface portion of the shelf on the upper surface, and a circular wall surrounded by the inclined wall surface by hanging an inclined wall surface on the outer peripheral edge of the planar portion Alternatively, it is formed with a polygonal reverse recess, and further, there is a slight gap between the bottom peripheral edge of the inclined wall surface and the floor surface, and the planar portion of the damper cover plate is connected to the lower surface of the shelf. While the elastic sphere or elastic-plastic sphere is fixed, the elastic sphere or elastic-plastic sphere is in contact with the lower surface of the flat surface and the floor surface. The most important feature is that they are placed on top of each other.

According to the seismic isolation device of the present invention product display shelf or article storage / display shelf, a large number of small hard spheres constituting the support member also rotate together with the movable frame due to horizontal shaking of the floor surface due to the occurrence of an earthquake. Although it moves, the horizontal movement due to the earthquake is absorbed by the rotational movement of the small hard sphere. Since the horizontal movement due to the earthquake is absorbed by the rotational movement of the small hard sphere, the horizontal vibration due to the earthquake is transmitted to the shelf connected and fixed on the ball holding iron plate arranged in contact with the small hard sphere. There is little or no transmission, and the shelves swing slightly horizontally and rotate slightly horizontally. And the shelf which has absorbed most of the horizontal shaking caused by the earthquake by the small hard spheres constituting the support member, slightly shaken horizontally, and slightly rotated horizontally is at least one shelf constituting the damper member. The elastic sphere or elasto-plastic sphere moves while sliding in an elliptical shape on the floor surface as the earthquake sways horizontally, and the elastic sphere or elasto-plastic sphere is applied to the inclined wall surface while being degenerated. In contact, the degree of contact gradually increases from the upper peripheral edge to the lower peripheral edge of the inclined wall surface, so that the rotating small hard sphere and the shelf that slightly swings horizontally and rotates slightly horizontally Can be gradually and gradually stopped without suddenly stopping. Therefore, it is possible to hold the product placed on the shelf, such as a product or a work of art without falling down, and prevent the product, the work of art, or the like from being damaged. Furthermore, since the seismic isolation device of the present invention can be manufactured by combining most commercially available inexpensive materials, it can be provided at a low cost.

Embodiments of the present invention will be described in detail with reference to the drawings. The seismic isolation device of the present invention is disposed on the lower surface of a shelf for displaying goods or a shelf 1 for storing and displaying goods, and in order to absorb horizontal shaking of the shelf 1, a support member that slides and rolls. 2, disposed on the lower surface of the shelf 1, and includes a stop of the support member 2, horizontal swing and horizontal rotation stop of the shelf 1, and a damper member 3 that returns the shelf 1 to its original position. .

As shown in FIGS. 2 and 7, the support member 2 has a movable frame 5 formed in a ring shape on the floor surface 4 on the lower surface of the shelf 1, and a circular shape of the movable frame 5. A large number of small hard spheres 6 having a diameter as small as a pachinko sphere are arranged in one step on the floor surface 4 in the space, and as the small hard spheres 6 rotate, the small hard spheres 6 While allowing the movable frame 5 to be moved by a rotational pressing force, a spherical retainer iron plate 7 having a larger diameter than the movable frame 5 is placed on the large number of small hard spheres 6. A mounting iron plate 9 fixed on the lower surface via a spacer 8 is integrally fixed by a mounting bracket 10 such as a bolt. The spherical body pressing iron plate 7 is disposed on each small hard sphere 6 with a pressing force capable of rotating each small hard sphere 6 by pressing each small hard sphere 6 from above. In the figure, the movable frame 5 has a circular frame shape, and the spherical retainer iron plate 7 has a circular shape. However, the movable frame 5 is a polygonal frame such as a rectangular frame, and a spherical body. The presser iron plate 7 may have a polygonal shape such as a square shape.

The movable frame 5 is made of a material that can move on the floor surface 4, for example, a metal such as aluminum or iron, or a hard plastic such as polypropylene. The height of the movable frame 5 is about half the diameter of the small hard sphere 6, and the upper part of the small hard sphere 6 is formed to protrude upward from the movable frame 5.

The small hard sphere 6 need not be particularly limited, but it is preferable to use a pachinko steel ball with a low price of 1.5 yen per piece, and 10 pieces per place depending on the load of the shelf 1. Used from 100 to 200 pieces. In addition, when a pachinko steel ball is used as the small hard sphere 6, the allowable load of one pachinko steel ball is about 1 kg as a result of testing the bottom surface of the shelf 1 as an iron plate and the floor surface 4 as a plastic tile. It was possible. In addition to the pachinko steel balls, hard plastic balls formed of hard plastic such as polypropylene, nylon, or Duracon can also be used as the small hard spheres 6.

The size of the support member 2 configured as described above varies depending on the size of the shelf 1 to be attached, the load, and the like. Further, as shown in FIGS. 5 and 6, it is necessary to install four each at least near the corner of the lower surface of the shelf 1. Therefore, for example, when the load on the shelf 1 is 400 kg, as described above, when a pachinko steel ball is used as the small hard sphere 6, if the allowable load of one pachinko steel ball is about 1 kg, It is only necessary to install four support members 2 each having pachinko balls disposed in the vicinity of the corner of the lower surface of the shelf 1. The bearing member 2 is not provided with stopper means for stopping the rotational movement of each small hard sphere 6 when the small hard sphere 6 is rotationally moved by horizontal shaking caused by an earthquake. Therefore, a means for stopping the rotational movement of each small hard sphere 6 is required. That is, it is the damper member 3 described later that stops the rotational movement of each small hard sphere 6.

The damper member 3 constituting the seismic isolation device of the present invention absorbs the horizontal shaking of the earthquake by exerting a sliding / rolling action on the shelf 1 by the rotational movement of each small hard sphere 6 constituting the support member 2, The horizontal shaking is not transmitted to the shelf 1 or is transmitted to the shelf 1 only slightly, and the shelf 1 is slightly horizontally shaken and slightly rotated horizontally. When the hard sphere 6 rotates, the rotational movement does not immediately stop, and the movable frame 5 continues to move due to the rotation of each small hard sphere 6, and further, the horizontal swing and horizontal of the shelf 1 that is slightly shaken. Since the rotation does not stop immediately, the horizontal shaking and horizontal rotation are softly pressed, the horizontal shaking and horizontal rotation of the shelf 1 are gradually and gradually stopped, and the rotational movement of each small hard sphere 6 is stopped, Movable frame 5 Sealed to the action. That is, the damper member 3 includes one or a plurality of elastic spheres or elastic-plastic spheres 21 (FIGS. 4, 9, 9, and 12) as shown in FIGS. 3, 4, 8, 9, 11, and 12. 12, two elastic spheres or elasto-plastic spheres 21 are illustrated) and disposed on the floor surface 4 in the damper covering plate 22 fixed to the lower surface of the mounting iron plate 9. Yes. A plurality of damper members 3 having the above-described configuration are disposed between the lower surface portion of the shelf 1 and the floor surface 4 with a predetermined interval.

The elastic sphere need not be particularly limited, but can be formed of a spongy material, but may be formed of a rubbery material having a relatively strong resilience and a property of being immediately restored even when compressed. It is recommended that the elastoplastic sphere need not be particularly limited, but can be formed of a rubber material, but it is relatively weak in elasticity and gradually does not immediately recover even after being compressed. It is recommended to form with a spongy material that has the property of restoring. In the seismic isolation device of the present invention, whether the elastic sphere or the elastic-plastic sphere is used as the damper member 3 is appropriately determined according to the situation of the installation site.

The damper covering plate 22 is provided with a circular planar portion 23 for connecting and fixing to the mounting iron plate 9 on the upper surface, and an inclined wall surface 24 is suspended from the outer peripheral edge portion of the planar portion 23, A reverse recess 25 surrounded by the inclined wall surface 24 is provided. And even if the elastic sphere or elasto-plastic sphere 21 is degenerated between the bottom peripheral edge 26 of the inclined wall surface 24 and the floor surface 4, a gap of about several mm where the bottom peripheral edge 26 does not contact the floor surface 4. 27, the planar portion 23 of the damper covering plate 22 is connected and fixed to the mounting iron plate 9 via a mounting bracket 28 such as a countersunk screw, and one or more elastic spheres or elastic-plastic spheres. 21, the upper and lower portions of the elastic sphere or elastic-plastic sphere 21 are brought into contact with the lower surface of the planar portion 23 and the floor surface 4 on the floor surface 4 in the reverse recess 25 of the damper cover plate 22. It is placed. In addition, although the said planar part 23 is formed in the circular shape in the figure, polygonal shapes, such as square shape, may be sufficient.

The inclined wall surface 24 of the damper covering plate 22 may be a stepped inclined wall surface 24a having a wider circumference as it goes downward in a stepwise manner as shown in FIGS. 8 to 10, or as shown in FIGS. Thus, it is good also as the linear inclination wall surface 24b which made the circumference wide as it went below linearly.

The number of the damper members 3 having the above-described configuration and the installation location thereof are appropriately set according to the shelf used. In FIG. 5, two damper members 3 are installed at intervals in the center of the four support members 2, and in FIG. 6, four damper members 3 are four in number. The support member 2 is installed at an intermediate portion with a gap. Furthermore, the elastic spheres or elastoplastic spheres 21 constituting the damper member 3 are appropriately adjusted according to the shelf to be used, depending on the material, diameter, number and crushing amount.

In FIG. 1, the support member 2 and the damper member 3 are fixed to a mounting iron plate 9 fixed to the lower surface of the shelf 1 via a spacer 8, but the spacer 8 is connected to the shelf 21 and the floor. If the distance between the surfaces 4 is to be adjusted and adjustment of the distance is not necessary, the support member 2 and the damper member 3 are directly attached to the lower surface of the shelf 1 without installing a spacer as shown in FIG. It may be fixed by attaching.

The operation of the seismic isolation device in the shelf for displaying the product of the present invention or the shelf for storing and displaying goods having the above-described configuration will be described. When the seismic isolation device for the product display shelf or the article storage / display shelf is installed between the shelf 1 and the floor surface 4, the support member 2 is constituted by the horizontal shaking of the floor surface 4 caused by the occurrence of an earthquake. The small hard sphere 6 also rotates along with the movable frame 5, but the horizontal movement of the earthquake is absorbed by the rotational movement of the small hard sphere 6. Since the horizontal movement due to the earthquake is absorbed by the rotational movement of the small hard sphere 6, the mounting iron plate 9 and the spacer 8 are placed on the spherical retainer iron plate 7 disposed in contact with the small hard sphere 6. The horizontal swing due to the earthquake is not transmitted to the shelf 1 that is connected and fixed to the shelf 1 or only a small amount even if it is transmitted, and the shelf 1 is slightly horizontally shaken and rotated slightly horizontally. The horizontal swing and horizontal rotation of 1 are greatly reduced.

Further, the shelf 1 whose horizontal swing has been reduced by the small hard spheres 6 constituting the support member 2 has one or a plurality of elastic spheres or elasto-plastic spheres 21 constituting the damper member 3. As the swaying motion occurs, the floor surface 4 is pushed and compressed into an elliptical cross-section, and moves while sliding with increased resistance. As shown in FIGS. Alternatively, the elastoplastic sphere 21 is further pressed and compressed and gradually increases the degree of contact from the upper peripheral edge 24 ′ to the lower peripheral edge 24 ″, so that the small hard sphere 6 that is rotating, the small hard sphere 6 The movable frame 5 that is moving with the rotational movement and the shelf 1 that is slightly horizontally swaying and rotating horizontally are stopped slowly and gradually without stopping the shelf 1 at the same time. It also has the effect of returning to position.

The spherical pressing iron plate 7 is within a movable range. For example, when the diameter of the movable frame 5 is 10 cm and the diameter of the spherical pressing iron plate 7 is 30 to 40 cm, the spherical pressing iron plate 7 is 5 on the small hard sphere 6 within a range of 40-60 cm in diameter. The diameter of the damper cover plate 22 constituting the damper member 3 is also determined in accordance with the movable range of the spherical body pressing iron plate 7.

It is a front view of the shelf which attached the seismic isolation apparatus in the shelf for present invention goods display, or the shelf for article storage and display. It is a bottom view of the supporting member which comprises the seismic isolation apparatus in the shelf for this invention merchandise display, or the shelf for article storage and display. It is a bottom view of the damper member which shows the example provided with one elastic ball in the seismic isolation apparatus in the shelf for present invention goods display, or the shelf for article storage and display. It is a bottom view of the damper member which shows the example provided with two elastic balls in the seismic isolation apparatus in the shelf for present invention goods display, or the shelf for article storage and display. FIG. 6 is a bottom view showing an example in which four support members and one damper member are used in the seismic isolation device in the present invention product display shelf or article storage / display shelf. FIG. 6 is a bottom view showing an example in which four support members and two damper members are used in the seismic isolation device of the present invention product display shelf or article storage / display shelf. FIG. 3 is a longitudinal sectional view showing a state in which a support member is attached to a shelf in a seismic isolation device in a shelf for displaying products according to the present invention or a shelf for storing and displaying goods. In the seismic isolation device for a shelf for displaying products according to the present invention or a shelf for storing and displaying goods, a longitudinal section showing a state in which one elastic ball is arranged on a damper member having a stepped inclined wall surface and attached to the shelf FIG. In the seismic isolation device of the present invention product display shelf or article storage / display shelf, a longitudinal section showing a state in which two elastic balls are arranged on a damper member having a stepped inclined wall surface and attached to the shelf FIG. FIG. 3 is a longitudinal sectional view of a main part showing a state in which an elastic sphere constituting a damper member is in contact with a stepped inclined wall surface in a seismic isolation device in a shelf for displaying products according to the present invention or a shelf for storing and displaying goods. In the seismic isolation device of the present invention product display shelf or article storage / display shelf, a longitudinal section showing a state in which one elastic ball is arranged on a damper member having a linear inclined wall surface and attached to the shelf FIG. In the seismic isolation device of the present invention product display shelf or article storage / display shelf, a longitudinal section showing a state in which two elastic balls are arranged on a damper member having a linear inclined wall surface and attached to the shelf FIG. FIG. 3 is a longitudinal sectional view of a main part showing a state in which an elastic sphere constituting a damper member is in contact with a linear inclined wall surface in a seismic isolation device in a shelf for displaying products according to the present invention or a shelf for storing and displaying goods. It is a front view of the shelf which attached the seismic isolation device in the shelf for present invention goods display, or the shelf for article storage and display by other methods.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shelf 2 Support member 3 Damper member 4 Floor surface 5 Movable frame 6 Small hard sphere 7 Ball holding iron plate 21 Elastic ball or elastic-plastic ball 22 Damper covering plate 23 Planar portion 24 Inclined wall surface 24a Stair-shaped inclined wall surface 24b Linear inclined wall surface 25 Reverse recess 26 Bottom peripheral edge 27 Clearance

Claims (7)

A shelf for displaying goods, or a shelf for storing and displaying goods, comprising a support member disposed on the lower surface of the shelf with a plurality of intervals and a damper member disposed with a plurality of intervals. A seismic isolation device in
The support member is mounted on a floor surface with a movable frame formed in a circular or polygonal frame, and a large number of small hard spheres having a small diameter are disposed on the floor surface in the space portion of the movable frame, In addition, a spherical pressing iron plate that is larger than the movable frame and formed in a circular or polygonal shape is placed on each small hard sphere, and the spherical pressing iron plate is pressed to such an extent that each small hard sphere can rotate and move. Formed integrally with the lower surface of the shelf with pressure,
The damper member is formed by disposing at least one elastic sphere or elastic-plastic sphere on a floor surface in a damper cover plate fixed to the lower surface of the shelf, and the damper cover plate includes: A circular or polygonal planar portion for connecting and fixing to the lower surface portion of the shelf on the upper surface, and a circular wall surrounded by the inclined wall surface by hanging an inclined wall surface on the outer peripheral edge of the planar portion Alternatively, it is formed with a polygonal reverse recess, and further, there is a slight gap between the bottom peripheral edge of the inclined wall surface and the floor surface, and the planar portion of the damper cover plate is connected to the lower surface of the shelf. While the elastic sphere or elastic-plastic sphere is fixed, the elastic sphere or elastic-plastic sphere is in contact with the lower surface of the flat surface and the floor surface. Product display shelves characterized by being placed on top of each other, or storage and exhibition of goods Seismic isolation device in the shelf of use. 2. The seismic isolation device for a shelf for displaying merchandise or a shelf for storing and displaying goods according to claim 1, wherein the small hard sphere is a steel ball. 2. The seismic isolation device for a merchandise display shelf or an article storage / display shelf according to claim 1, wherein the small hard sphere is a hard plastic ball. 2. The seismic isolation device for a merchandise display shelf or an article storage / display shelf according to claim 1, wherein the elastic sphere or the elastic-plastic sphere is formed of a rubber material. The seismic isolation device for a merchandise display shelf or an article storage / display shelf according to claim 1, wherein the elastic sphere or the elasto-plastic sphere is formed of a sponge material. 2. The seismic isolation device for a shelf for displaying merchandise or a shelf for storing and displaying goods according to claim 1, wherein the inclined wall is a step-like inclined wall whose circumference is increased as it goes downward. 2. The seismic isolation device for a shelf for displaying merchandise or a shelf for storing and displaying goods according to claim 1, wherein the inclined wall surface is a linear inclined wall surface whose circumference increases in the downward direction.

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