JP6909104B2 - Bookshelf - Google Patents

Description

The present invention relates to a bookshelf having vibration damping properties.

The bookshelves installed in the library are larger in size than the bookshelves for general households, and the number of books stored is large. For example, a normal library bookshelf has a structure in which spaces having a width of 900 mm, a depth of 210 mm, and a height of 275 mm are arranged in 5 to 7 stages and continuously connected. If such a library bookshelf collapses due to an earthquake, many books will fall and the damage will increase, and it will take time to recover.

Therefore, in the library, the bookshelf may be fixed to the floor with anchor bolts to take measures against earthquakes. However, in that case, the seismic motion from the floor will be transmitted directly to the bookshelf. Then, since the stored books are not fixed, there is a high possibility that the books will fall from a high stage. In particular, when the direction of the seismic motion is the depth direction of the bookshelf, the vibration is transmitted from the back plate installed on the back side of the shelf plate to the books, so that the books fall more frequently.

As another earthquake countermeasure, a seismic isolation device may be provided on the bookshelf (see, for example, Patent Document 1). 5A and 5B are an example of a seismic isolation device that can be installed on a bookshelf, where FIG. 5A is a plan view and FIG. 5B is a front view. In such a seismic isolation device 100, the weight of the mounting table 120 and the bookshelf mounted on the mounting table 120 is shared by the cross-shaped slide 130 that generates a returning force in two orthogonal directions and the rolling support means 121 composed of wheels or the like. Since it can be supported, the strength of the cross-shaped slide 130 against a load can be reduced, and an excellent seismic isolation effect can be exhibited.

Patent Document 1 states that a seismic isolation device having such a structure can be manufactured at low cost, but since the seismic isolation device itself has a complicated structure, it is clear when compared with a simple earthquake countermeasure. In the case where a large number of bookshelves are lined up like a library, the number of bookshelves installed is large, which means that the total amount will be very expensive. Therefore, it is desired to take earthquake countermeasures that can exert the same effect as such a seismic isolation device while being inexpensive.

Patent No. 4936903

In view of the above circumstances, it is an object of the present invention to provide a bookshelf having a vibration-damping property that can suppress damage caused by an earthquake while having a structure simpler than that of a general seismic isolation device. ..

In order to achieve the above object, the bookshelf of the present invention is a bookshelf having a side plate, a frame connecting the side plates, and a shelf plate, and the back plate is provided on the back side of the shelf plate. Is connected to the frame via a damper made of spring material.

Here, the back plate may be made of a resin honeycomb core sandwich panel, or the damper may be made of anti-vibration rubber.

According to the bookshelf of the present invention, since the back plate functions as a vibration damping panel, a vibration damping structure is added to the bookshelf, which has the effect of suppressing earthquake damage.

It is a perspective view of the bookshelf of this invention. It is a front view of the bookshelf of this invention. It is a figure explaining the mounting method of a shelf board. It is a figure explaining the structure of the back plate. It is an example of a seismic isolation device that can be installed on a bookshelf, (a) is a plan view, and (b) is a front view.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of the bookshelf of the present invention, and FIG. 2 is a front view of the bookshelf of the present invention. For ease of explanation, in FIGS. 1 and 2, the left side is the state where the shelf board 13 is removed, the right side is the state where the shelf board is attached, and FIG. 2 shows only the upper half.

The basic structure of the bookshelf 10 of the present invention is composed of a side plate 11, a frame 12, a shelf plate 13, and a back plate 20. The materials of the side plate 11, the frame 12, and the shelf plate 13 are not particularly limited to those made of steel or wood, and for example, the frame 12 and the shelf plate 13 may be made of steel, and the side plate 11 may be made of wood.

The side plate 11 is a plate material that is erected vertically in the direction of sandwiching the books to be stored from the left-right direction, and serves as a pillar. Adjacent side plates 11 are connected by a frame 12, and the frame 12 is connected at a right angle to the side plates 11 when viewed from above. That is, since the frame 12 and the side plate 11 have an H shape or a U shape when viewed from above, they can stand on their own as a whole. An elastic material such as rubber can be attached to the lower end of the side plate 11 to reduce the transmission of seismic motion from the floor surface. Further, FIG. 1 is an H-shaped diagram, and since many of the bookshelves 10 for libraries are H-shaped, the H-shaped bookshelf will be described as an example.

The frame 12 is a quadrangular frame material including two sides in the vertical direction and two sides in the horizontal direction. The two vertical sides of the frame 12 are connected to the side plate 11 along the center of the side plate 11, and the two horizontal sides have a structure in which the adjacent side plates 11 are connected to each other on the upper side and the lower side of the side plate 11. There is.

The shelf board 13 is installed in a space surrounded on three sides by a frame 12 and two side boards 11 and 11 when viewed from above. That is, in the case of the H-shaped bookshelf 10, the shelf boards 13 are symmetrically installed with the frame 12 as a boundary when viewed from above.

As a method of attaching the shelf board 13, for example, there is a method using a shelf receiving rail and a receiving tool. FIG. 3 is a diagram illustrating a method of attaching the shelf board. The shelf support rail 14 is a rail-shaped member provided in the vertical direction on the surface of the side plate 11, and has a structure that can be locked by hooking the claw 15a of the receiver 15 on the shelf plate rail 14. Then, by placing the shelf board 13 on the receiver 15 hooked on the shelf board rail 14, the locking of the shelf board rail 14 and the receiver 15 can be stabilized by the weight of the shelf board 13. The shelf board 13 can be installed at a desired height by providing a plurality of locations for hooking the claws 15a of the receiver in the height direction of the shelf support rail 14.

The back plate 20 is a plate-shaped member attached to the inside of the quadrangle formed by the four sides of the frame 12. The back plate 20 is provided on the back side of the shelf plate 13 to prevent books from falling behind the shelf plate 13 and to serve as a partition for the shelves. That is, when the shelf boards 13 are provided symmetrically with the frame 12 as a boundary, the front and back shelves are partitioned between the symmetrical shelf boards 13.

Here, by making the back plate 20 function as a vibration damping panel, it is possible to add a vibration damping structure to the bookshelf and absorb seismic motion. In order to function as a vibration damping panel, it is preferable to use a damper 21 made of a spring material such as vibration damping rubber for connecting the frame 12 and the back plate 20. With such a structure, the back plate 20 vibrates when the seismic motion is input, and the vibration is damped by the damper 21, so that the seismic motion is absorbed and the effect of damping is obtained. As the mounting position of the damper 21, for example, the four corners of the back plate 20 may be provided so as to be connected to the four corners of the frame 12.

In particular, when the back plate functions as a vibration damping panel, there is a high possibility that the back plate will collide with the shelf plate or the like due to seismic motion, so it is preferable that the back plate is made of a light and durable material. Therefore, for example, a plate material (honeycomb core sandwich panel) composed of a honeycomb core may be used as the back plate. FIG. 4 is a diagram illustrating the structure of the back plate. The back plate 20 is a honeycomb core sandwich panel in which the honeycomb core 20b is sandwiched between the upper and lower skins 20a and 20a. The material of the back plate 20 is not particularly limited, but there are honeycomb core sandwich panels made of resin such as polypropylene, and if the honeycomb core sandwich panel is molded of such polypropylene resin, it is lightweight and per unit weight. It is suitable for use as a back plate 20 because of its excellent strength. In addition, because it is slightly transparent, the library has the advantage of being able to recognize people on the other side of the bookshelf through the gaps in the books and making the library brighter.

As described above, by using a vibration damping panel for the back plate, it is possible to add vibration damping properties to the bookshelf with a simple structure. And since the vibration control panel will be installed between each side plate, even if the structure is such that the bookshelves are continuous like a library, the individual vibration control panels will function and the entire bookshelf will undulate. It is possible to efficiently prevent earthquake damage such as the collapse of bookshelves.

10 Bookcase 11 Side plate 12 Frame 13 Shelf plate 14 Shelf support rail 15 Receiver 20 Back plate 21 Damper

Claims (3)

A bookshelf having a side plate, a frame connecting the side plates, and a shelf plate.
Includes a back plate on the back side of the shelf plate, the back plate being connected to the frame via a damper made of spring material, the back plate that acts as a vibration damping panel when ground motion is input A bookcase characterized by that. The bookshelf according to claim 1, wherein the back plate is made of a resin honeycomb core sandwich panel. The bookshelf according to claim 1 or 2, wherein the damper is made of anti-vibration rubber.

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