JP3110450U - Fall prevention device - Google Patents

Abstract

An object of the present invention is to provide a fall prevention device capable of preventing a book shelf installed in a room, furniture such as a basket, equipment and the like from falling due to an earthquake or the like.
A fall prevention device (1) is placed so that a substrate (4) is in contact with an upper surface (3) such as furniture (2). By rotating and screwing each nut 17 in the direction of the arrow, each screw shaft 14 is advanced toward the ceiling 10. One end 15 is inserted into the screw receiving recess 13, the upper plate 9 is placed on the four screw shafts 14, and the upper plate 9 is brought into contact with the lower surface 11 of the ceiling 10 through the screw receiving recess 13. The screw shaft 14 is held and fixed to the side plates 7 and 7 by the tightening force of the nut 17. As a result, the furniture 2 and the like are pressed by the substrate 4 and the lower surface 11 of the ceiling 10 is pressed by the upper plate 9, so that the furniture 2 and the like can be held in a uniform and stable state over a wide range by the fall prevention device 1. It can prevent overturning even when pitching and rolling. Moreover, it can prevent that the fall prevention apparatus 1 itself remove | deviates also with respect to sudden shaking.
[Selection] Figure 10

Description

    The present invention relates to a fall prevention device for preventing a book shelf, furniture such as a bag, equipment and the like installed in a room from falling down due to an earthquake or the like.

As a conventional fall prevention device for furniture or the like, there is a fall prevention device using a screw mechanism, that is, a mechanism in which a screw shaft screwed into a nut moves linearly (see, for example, Patent Document 1).
In this fall prevention device, one screw shaft is fixed to each base that contacts a part of the upper surface of the furniture and the lower surface of the ceiling, and the screw shaft is advanced and retracted by a nut to press the furniture to prevent the fall. is there.

However, in this fall prevention device, a part of the furniture and the ceiling is only partially pressed by one screw shaft, so that the shake is effective in a vertical earthquake, but in the horizontal shake On the other hand, the wobble becomes unstable and sufficient fall prevention cannot be achieved. In particular, in an earthquake with a sudden roll, the fall prevention device itself is detached, and there is a drawback that the fall prevention cannot be reliably performed.
Utility Model Registration No. 3021136

    The present invention has been made to solve the above-described problems, and can prevent the furniture from falling over against an earthquake that involves a pitching or rolling, and the upper surface and ceiling of the installed furniture. It is an object of the present invention to provide a fall prevention device that can more effectively utilize the space between the two.

    The means of the present invention for solving the above-mentioned problem is that a substrate abutting on the upper surface of furniture or the like, and an upper end surface of each of the standing upper ends so as to be opposed to the substrate with a space therebetween At least two side plates formed at least two screw insertion holes from the bottom to the bottom, and above the substrate and the side plates, facing these and abutting against the lower surface of the ceiling, and one of the side plates An upper plate in which a screw receiving recess is formed at a position corresponding to each screw insertion hole of the other side plate and a position corresponding to each screw insertion hole of the other side plate, and one end at the screw receiving recess of the upper plate and the other end At least four screw shafts whose sides are inserted into the screw insertion holes of the side plate, and screwed into the screw shafts, the screw shafts are advanced and retracted with respect to the ceiling by a screwing operation, and the screw holders are received at one end of the screw shafts. Above through the recess In a state of being brought into contact with the lower surface of the ceiling, in which comprises at least four nuts is held fixed to the screw shaft to the side plate.

    The fall prevention device according to claim 2 is the fall prevention device according to claim 1, wherein the screw shaft is provided with a protrusion for preventing rotation at a portion inserted into the screw insertion hole.

    According to a third aspect of the present invention, the fall prevention device according to the first aspect is provided with a back plate for connecting the one side plate and the other side plate to the side plate.

    According to a fourth aspect of the present invention, in the fall prevention device according to the first aspect, a shelf for partitioning the space is provided in a space formed by the substrate, the side plates, and the upper plate.

    According to the fall prevention device according to claim 1, at least four substrates interposed between the substrate, at least two side plates, an upper plate provided above the substrates and the side plates, and the upper plate and the side plates. A screw shaft and at least four nuts for holding and fixing the screw shaft to the side plate after the upper plate is brought into contact with the lower surface of the ceiling by the screw shaft so as to constitute a fall prevention device. Therefore, the upper surface of the furniture and the lower surface of the ceiling can be pressed and held over a wide range in a uniform and stable state. For this reason, furniture can be prevented from tipping against vertical shaking during an earthquake, and rolling such as back and forth, left and right, and diagonally. Further, since the pressing force of the screw shaft is dispersed, it is possible to prevent damage to the upper surface of the furniture or the lower surface of the ceiling.

    According to the fall prevention device of the second aspect, since the protrusion for preventing rotation is provided on the screw shaft, it is possible to prevent the screw shaft from slipping. Therefore, when the screw shaft is advanced and retracted, the screw shaft can be simply rotated without holding the screw shaft by hand, and the fall prevention device can be easily attached.

    Moreover, according to the fall prevention device of claim 3, since the back plate for connecting the side plate and the side plate is provided, the strength of the fall prevention device itself can be further improved, and the substrate, each side plate, and the upper plate There is also an effect that the formed space can be used as a storage chamber for storing articles.

    Furthermore, according to the fall prevention device according to the fourth aspect, since the shelf is provided in the space formed by the substrate, the side plates, and the upper plate, the fall prevention device itself can be used as an article placement shelf. Therefore, the space between the upper surface of the furniture and the ceiling can be used more effectively.

Hereinafter, a fall prevention device according to an embodiment of the present invention will be described with reference to FIGS.
Reference numeral 1 denotes a toppling prevention device for preventing a bookshelf, furniture such as a bag, equipment and the like from falling down due to an earthquake or the like.
The fall prevention device 1 is erected so as to face the substrate 4 that is in contact with the upper surface 3 of the furniture 2 and the like, with a space from the substrate 4, and from the respective upper end surfaces 5, 5 that are erected. At least two side plates 7 and 7 having at least two screw insertion holes 6 and 6 and 6 formed downward are provided. The screw insertion hole 6 is formed in a square shape in cross section, and is provided to penetrate to the lower end surface 8 of the side plate 7. Further, 9 is located above the substrate 4 and the side plates 7 and 7 so as to be opposed to the lower surface 11 of the ceiling 10 and to correspond to the screw insertion holes 6 and 6 of one side plate 7 of the side plate. The upper plate is formed with screw receiving recesses 13, 13, 13, 13 at positions corresponding to the screw insertion holes 6, 6 of the other side plate 7, respectively.

    Further, 14 is interposed between the upper plate 9 and the side plates 7, 7, one end 15 is in the screw receiving recess 13, 13, 13, 13 of the upper plate 9, and the other end 16 side is the side plate 7, 7. These are at least four screw shafts inserted into the screw insertion holes 6, 6, 6, 6. In addition, 17, 17, 17, and 17 are screwed into the screw shafts 14, 14, 14, and 14 via the washer 12, and the screw shaft 14 is advanced and retracted with respect to the ceiling 10 by the screwing operation. Thus, at least four nuts for holding and fixing the screw shaft 14 to the side plates 7 and 7 in a state where the upper plate 9 is brought into contact with the lower surface 11 of the ceiling 10 via the screw receiving recess 13.

Reference numeral 18 denotes a back plate that connects one side plate 7 and the other side plate 7, and further improves the strength of the fall prevention device 1. Further, the space 24 formed by the substrate 4, the side plates 7 and 7, and the upper plate 9 can be used as a storage chamber for storing articles (not shown).
On the other hand, each screw shaft 14 is provided with a protrusion 19 for preventing rotation at a portion inserted into the screw insertion hole 6 (see FIGS. 5 and 6). The protrusion 19 is formed by press-fitting a pin 21 into a hole 20 that is formed so as to be orthogonal to the axis of the screw shaft 14. The protrusion 19 is dimensioned so that the protrusion 19 only interferes with the inner wall of the screw insertion hole 6 and the rotational direction of the screw shaft 14 so that the screw shaft 14 does not idle in the screw insertion hole 6.
Therefore, the screw shaft 14 can be moved back and forth with respect to the ceiling 10 by the screwing operation of the nut 17.
A spring (not shown) is provided between the washer 12 and the nut 17, and the screw shafts 14, 14, 14, 14 are screwed into the screw receiving recesses 13, 13, 13, by the urging force of the spring (not shown). 13 may be pressed.

    Further, the protrusion 19 does not use the pin 21, and a part of the screw shaft 14 itself is pressed and protruded from a direction orthogonal to the axis to have an irregular shape, and the irregularly protruding portion may be used as the protrusion 19 (see FIG. 7). ). If the screw shaft 14 is held by hand when the nut 17 is screwed in, the projecting portion 19 is not required and the screw insertion hole 6 is simply formed by a circular cross-sectional hole. You can also. Furthermore, the screw insertion hole 6 may not be a through hole extending from the upper end surface 5 to the lower end surface 8, but may be a blind hole halfway, and the hole depth in this case may be appropriately determined from the adjustment allowance for the advancement and retraction of the screw shaft 14. . On the other hand, the substrate 4, the side plates 7 and 7, the back plate 18 and the upper plate 9 are made of wood, and although not shown, the connecting portion is assembled with wood screws or the like. However, this manufacturing material may be an appropriate material, for example, a synthetic resin material. In this case, the substrate 4, the side plates 7 and 7, and the back plate 18 can be integrally formed and manufactured.

    Next, the operation of the fall prevention device 1 configured as described above will be described. FIG. 10 shows a state in which the fall prevention device 1 is attached to the furniture 2 or the like installed on the floor 23 of the room 22. That is, the fall prevention device 1 configured as shown in FIG. 1 is placed so that the substrate 4 contacts the upper surface 3 of the furniture 2 or the like. Then, as shown in FIG. 8, each screw shaft 14 is advanced in the direction of the ceiling 10 by rotating and screwing each nut 17 in the direction of the arrow. In this case, if the upper plate 9 is removed from the screw shaft 14, the screwing operation of the nut 17 becomes easy. When one end 15 of the screw shaft 14 approaches the ceiling 10, one end 15 of each screw shaft 14 is inserted into the screw receiving recess 13 as shown in FIG. 9 and the upper plate 9 is placed on the four screw shafts 14. . Thereafter, the nut 17 is screwed again, and the upper plate 9 is brought into contact with the lower surface 11 of the ceiling 10 through the screw receiving recess 13. Since the screw shaft 14 is prevented from moving in the direction of the ceiling 10 after the contact, the screw shaft 14 is held and fixed to the side plates 7 and 7 by the tightening force of the nut 17. As a result, the furniture 2 and the like are pressed by the substrate 4 and the lower surface 11 of the ceiling 10 is pressed by the upper plate 9, so that the furniture 2 and the like can be held in a uniform and stable state over a wide range by the fall prevention device 1. It can prevent overturning even when pitching and rolling. Moreover, it can prevent that the fall prevention apparatus 1 itself remove | deviates also with respect to sudden shaking.

    Although not shown in the drawings, the anti-tip apparatus 1 is provided with an anti-slip sheet interposed between the furniture 2 and the substrate 4 and between the upper plate 9 and the lower surface 11 of the ceiling 10 when installed. The fall prevention effect is further improved. This sheet may be attached to the substrate 4 and the upper plate 9 in advance. Moreover, although the fall prevention apparatus 1 showed the case where one was attached to one furniture 2 in a present Example, when furniture 2 etc. are large, you may provide two or more. Alternatively, the fall prevention device 1 may be manufactured in a large size so that the fall prevention device 1 itself can cope with a large piece of furniture 2 or the like.

Next, a fall prevention device (second embodiment) according to another embodiment of the present invention will be described with reference to FIG.
In the fall prevention device 1 of the second embodiment, shelves 25 and 25 for partitioning the space 24 are provided in a space 24 formed by the substrate 4, the side plates 7 and 7, and the upper plate 9. The shelf 25 is inserted into grooves 26 and 26 provided in the side plates 7 and 7.
Thereby, the fall prevention device 1 can be used as a placement shelf for articles. That is, the space between the upper surface 3 of the furniture 2 and the ceiling 10 can be used more effectively.
Similarly to the first embodiment, when the substrate 4, the side plates 7 and 7, the back plate 18, and the like are made of synthetic resin, the shelf 25 may be integrally formed therewith. In this case, the strength can be further improved. Except for these points, the second embodiment also has the same effect as the first embodiment.
Instead of inserting the shelves 25, 25 partitioning into the grooves 26, 26, dowel pins (not shown) are provided on the side surfaces of the partition shelves 25, 25, and these dowel pins (not shown) are provided on the side plates 7, 7. The shelves 25, 25 that are partitioned so as to be fitted into a service hole (not shown) may be fixed to the side plates 7, 7.

FIG. 1 is a schematic perspective view showing a fall prevention device according to an embodiment of the present invention. FIG. 2 is a schematic exploded perspective view showing FIG. 1 in an exploded manner. FIG. 3 is a schematic front view illustrating a use state in which only a part is shown in cross section, showing the overturn prevention device of FIG. 1. FIG. 4 is a schematic cross-sectional view of FIG. 3 taken along the line AA. FIG. 5 is a schematic enlarged view of a portion indicated by B in FIG. 6 is a schematic perspective view of a screw shaft of the overturn prevention device of FIG. FIG. 7 is a schematic perspective view of a screw shaft of another embodiment different from the screw shaft of FIG. FIG. 8 is a schematic exploded perspective view of a main part for explaining a use state of the overturn prevention device of FIG. FIG. 9 is a schematic perspective view of a main part for explaining a usage state of the overturn prevention device of FIG. 1. FIG. 10 is a schematic side view showing only the installed building in cross section, showing the usage state of the overturn prevention device of FIG. 1. FIG. 11 is a schematic exploded perspective view of a fall prevention device of another embodiment different from the fall prevention device of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fall prevention apparatus 2 Furniture 4 Board | substrate 6 Screw insertion hole 7 Side board 9 Upper board
10 Ceiling
13 Screw receiving recess
14 Screw shaft
17 Nut

Claims (4)

A substrate that comes into contact with the top surface of furniture,
And at least two side plates that are erected so as to face the substrate with a gap, and at least two screw insertion holes are formed downward from each of the erected upper end surfaces;
It is above the substrate and the side plate, is opposed to the bottom surface of the ceiling, and is located at a position corresponding to each screw insertion hole of one side plate of the side plate and each screw insertion hole of the other side plate. An upper plate formed with screw receiving recesses at corresponding positions;
At least four screw shafts having one end inserted into the screw receiving recess of the upper plate and the other end inserted into the screw insertion hole of the side plate;
In a state where the screw shaft is screwed into the screw shaft, the screw shaft is advanced and retracted with respect to the ceiling by a screwing operation, and the upper plate is brought into contact with the lower surface of the ceiling through the screw receiving recess at one end of the screw shaft. A fall prevention device comprising at least four nuts for holding and fixing the screw shaft to the side plate.     2. The overturn prevention device according to claim 1, wherein the screw shaft is provided with a protrusion for preventing rotation at a portion inserted into the screw insertion hole.     2. The overturn prevention device according to claim 1, wherein a back plate for connecting one side plate and the other side plate is provided on the side plate.     The fall prevention device according to claim 1, wherein a shelf for partitioning the space is provided in a space formed by the substrate, the side plates, and the upper plate.

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