JP5176010B2 - Disaster prevention table - Google Patents

Description

  The present invention relates to classroom desks used in kindergartens or schools, particularly classroom desks that can protect children or students evacuated under the desk in the event of an earthquake, or disaster prevention tables that can be used in ordinary homes, offices, etc. .

  In recent classroom desks, the weight has been originally designed so that when the body is struck, the desk moves so that the child or student's body is not injured and can be easily moved by cleaning. .

On the other hand, in recent years, disaster prevention training in kindergartens and schools has been instructed to evacuate under the desk when an initial vibration (P-wave) detection alarm is issued in an emergency earthquake warning.
However, when such an earthquake occurs, even if you evacuate under the desk, because the desk is lighter, the desk itself may run away or fall over, causing children to fall from the fallen object with the desk. Or the initial goal of protecting students may not be fulfilled.

  Therefore, the applicant of the present invention is a classroom desk that can be retracted and protected in the event of such an earthquake, with a desk body made up of a leg frame structure and a top plate, and a bottom plate that is movably installed on the desk body so that flat surfaces do not land. It has a non-slip member with a high coefficient of friction on the bottom, and when the load of the whole body of a person retreated under the desk is applied during an earthquake, it will land on the floor and press the leg frame structure against the floor surface The classroom desk provided with the bottom plate configured as described above and the bottom plate landing deterring means for holding the bottom plate in a non-floating state that does not interfere with human seating has been proposed. (See Patent Document 1.)

JP 2009-213652 A

  However, in the case of the classroom desk in the invention of the prior application described in Patent Document 1 by the present applicant, even if it enters under the desk in the event of an earthquake, no measures have been taken to prevent the chair from jumping under the desk.

  Therefore, the object of the present invention is to protect a student who has evacuated under the desk, without having to apply force even when a large earthquake occurs, without causing the desk to fall or move, and the chair jumps into the desk. There is a disaster prevention table including a classroom desk that can avoid this.

In order to achieve this object, the disaster prevention table of the present invention has a height corresponding to the height of the side stay that connects the bottom plate between the legs of the leg pairs on the left and right of the leg frame structure 2 at the lower part. And a box-shaped bottom plate having an internal width slightly smaller than the internal width of the leg frame structure,
The box-shaped bottom plate is rotatably connected to the lower part of each front leg in the left and right leg pairs,
Hook means having hooks respectively engageable with the pair of side stays are provided on the left and right side surfaces on the rear side of the box-shaped bottom plate,
The leg frame structure is provided with latch means for holding the box-shaped bottom plate in a state of leaning forward by engaging the plain with at least one hook of the hook means as the bottom plate landing restraining means, Further, the leg frame structure is provided with a latch release means for releasing the latch means in an emergency.

According to the disaster prevention table of the present invention, when an initial vibration (P-wave) detection alarm is issued in an emergency earthquake warning, the child, student, or ordinary person sits on the box-shaped bottom plate, and the entire weight of the child, student, or ordinary person is thereby measured. Is added to the box-shaped bottom plate, and the hook means of the box-shaped bottom plate presses the leg frame structure against the floor surface, and the anti-slip member on the bottom surface of the box-shaped bottom plate holds the disaster prevention table firmly on the floor surface. The general public can be reliably protected from falling objects.
In addition, when a child or student or a general person pulls the chair leg by hand, the chair leg collides with the front of the box-shaped bottom plate, prevents the chair from entering the desk any further, and The person under the desk can be protected from other flying objects.
Furthermore, the box-shaped bottom plate is normally held in this leaning state by hook means when leaning forward, and the anti-slip member of the box-shaped bottom plate does not contact the floor surface, so that it can be moved during indoor cleaning, for example. is there.

In a preferred embodiment of the present invention, the latch means is a latch having a vertical surface that is pressed into a flat protruding state by a spring load and can be engaged with the inner surface of the hook. A spring load latch having an inclined cam surface that engages with the outer surface of the hook when leaning and the spring load bends to retract the latch is adopted.
According to this configuration, when the box-shaped bottom plate is stood from the tilted state, the hook outer surface of the box-shaped bottom plate is pressed against the inclined cam surface of the spring load latch, the spring load latch is retracted, and the hook outer surface passes the inclined cam surface. Then, the spring load latch is restored to the initial state by the spring load, and the vertical surface of the spring load latch can be engaged with the inner surface of the hook to automatically latch.

Furthermore, in a preferred embodiment of the present invention, an overhanging cover for covering the foot portion of the chair having a foot portion at the bottom of the chair leg is provided on the rear (chair side) portion of the box-shaped bottom plate.
According to this configuration, the overhanging cover covers the foot portion of the chair from above, and the chair can be reliably prevented from falling.

  In another preferred embodiment of the present invention, the box-shaped bottom plate is configured to be usable as a container for disaster prevention goods and the like. According to this configuration, for example, the disaster hood can be taken out and covered before going under the desk, and emergency food can be taken out after the disaster to overcome hunger and thirst.

  Next, preferred embodiments of the present invention will be described with reference to the drawings.

It is the perspective view seen from the right side which shows the use condition which brought down the box-shaped bottom board and pulled the chair forward while the earthquake disaster occurred of the disaster prevention table 1 in a preferred embodiment according to the present invention. It is the perspective view seen from the right side of the disaster prevention table 1 shown in FIG. 1 which shows the use state which fell down the box-shaped bottom board and pulled the chair back, when an earthquake occurred. It is the perspective view seen from the right side which shows the state which leaned the plain and the box-shaped bottom plate of the disaster prevention table 1 shown in FIG. 1, and was latched in this state by the latch means. FIG. 4 is a detailed enlarged perspective view of a part of FIG. 3. It is the perspective view seen from back which shows the state which leaned the plain and the box-shaped bottom board of the disaster prevention table 1 shown in FIG. 1, and latched in this state by the latch means.

  FIG. 1: shows the perspective view of the use condition of the disaster prevention table 1 in suitable embodiment by this invention. The disaster prevention table 1 includes a leg frame structure 2, a top plate 3 provided above the leg frame structure 2, and a shelf board 4 as a container provided between the leg frame structure 2 and the top plate 3.

  In this embodiment, the leg frame structure 2 has a height corresponding to the height of the side stay 2A that connects the leg portions of the respective leg pairs on the left and right sides at the lower part, and the inner method of the leg frame structure. A box-shaped bottom plate 5 having an inner width slightly smaller than the width is provided, and the box-shaped bottom plate 5 is pivotable around the pivot pin 2b at the lower part of each front leg 2a in the left and right leg pairs. Link. Hook means having left and right hooks 6 respectively engageable with the pair of side stays are provided on the left and right side surfaces behind the box-shaped bottom plate 5. Each of the left and right hooks 6 has a U-shaped hook tip that engages with the left and right side stays 2A.

  In the leg frame structure 2, as a bottom plate landing restraining means for holding the box-shaped bottom plate 5 in a non-floating state where there is no hindrance to the seating of a person, the plain can be released to at least one hook 6 of the hook means. In addition, there are provided latch means having a latch 7 for holding the box-shaped bottom plate 5 leaning forward, and latch release means 8 for releasing the latch means in an emergency. Although the hook 6 and the latch 7 are provided only on the right side of the leg frame structure 2 in the illustrated embodiment, they may be provided on both sides.

  As shown in FIG. 4, the latch 7 of the latch means has a vertical surface 7A that is pressed into a flat protruding state by a spring load (not shown) and can be engaged with the inner surface of the hook, and the box-shaped bottom plate is tilted down. It is configured as a spring load latch having an inclined cam surface 7B that engages with the outer surface of the hook when leaning forward from the spring and the spring load is bent to retract the latch.

  The latch release means 8 includes, for example, cable means 8B having one end connected to the latch 7 and a knob 8A attached to the other end so as to lift the latch against the spring force of the spring load of the latch 7. can do. When the left and right latches 7 are provided, the cable means has a first cable portion extending from the knob 8A and a second branch cable portion that is divided into two forks from the second cable portion. Each is connected to a latch 7.

  An anti-slip member 9 having a high friction coefficient is provided on the bottom surface of the box-shaped bottom plate 5 (see FIG. 5). The anti-slip member 9 can be any member having a high coefficient of friction, but is preferably a mat or sheet of an adhesive elastomer material.

  At the time of the earthquake, the box-like bottom plate 5 is landed on the floor by pulling the knob 8A of the latch release means 8 and releasing the latch 7. Thereafter, a child or a student or a person who enters the desk draws the chair 10 as shown in FIG. 1 or FIG. FIG. 1 shows a use state in which the chair 10 is pulled forward, and FIG. 2 shows a use state in which the chair 10 is pulled back. The illustrated chair 10 is shown as a chair having a foot portion 10A at the bottom of the chair leg. As shown in FIG. 2, when the chair 10 is pulled backward and used during an earthquake, the protection effect from scattered objects is high.

  In the embodiment of FIGS. 1 and 2, the box-shaped bottom plate 5 is configured such that an overhanging cover 5A that covers the foot portion 10A of such a chair is provided on the rear portion. When the chair 10 is a chair that does not have such a foot portion 10A, the box-shaped bottom plate 5 does not need to be provided with the overhanging cover 5A. In the case of a chair that does not have the foot portion 10A, when the child or student or person evacuated under the desk draws the chair, the leg portion of the chair collides with the front surface 5B of the box-shaped bottom plate 5, and the chair 10 no longer has a desk. I can't get down. In the case of a chair having a foot portion 10A, as shown in FIG. 1, the tip end portion of the foot portion 10A abuts the front surface 5B of the box-shaped bottom plate 5, and the rear edge (chair side) upper edge of the overhanging cover 5A The left and right leg portions 10B of the chair 10 collide with each other to prevent the chair 10 from entering the desk, and the overhanging cover 5A functions to prevent the chair from toppling over.

  In a preferred embodiment, the box-shaped bottom plate 5 is configured to be usable as a container for disaster prevention goods. According to this configuration, for example, a disaster hood, emergency food, a flashlight, etc. are placed in the box-shaped bottom plate 5, and the disaster hood is taken out and covered before going under the desk in the event of an actual earthquake. If you suffer from hunger, you can take out emergency foods to overcome hunger and thirst, and in the dark, you can turn on a flashlight to ease anxiety.

  The disaster prevention table of the present invention can be used as a classroom desk in kindergarten, elementary school, junior high school, etc., or as a table in a general home or office, and when an alarm is issued in the event of an earthquake, a child, student or general public is under the desk. Evacuate to sit on the box-shaped bottom plate, the box-shaped bottom plate that has landed firmly secures the table to the floor surface, and the table can be reliably removed from falling objects or scattered objects such as chairs without falling and moving. Can protect the body.

DESCRIPTION OF SYMBOLS 1 Disaster prevention table 2 Leg frame structure 2A Side stay 2a Front leg 2b Pivoting pin 3 Top plate 4 Shelf plate 5 Box-shaped bottom plate 5A Overhanging cover 6 Hook 7 Latch 7A Vertical surface 7B Inclined cam surface 8 Latch release means 8A Knob 8B Cable Means 9 Non-slip member 10 Chair 10A Foot part 10B Leg part

Claims (4)

In the disaster prevention table,
A table body composed of a leg frame structure and a top plate;
The flat plate is a bottom plate that is movably provided on the desk body so as not to land, and has a non-slip member with a high coefficient of friction on the bottom surface, and when the load of the whole body of a person retracted under the table is applied during an earthquake The bottom plate configured to press down the leg frame structure against the floor surface while landing on the floor;
In a disaster prevention table provided with a bottom plate landing deterring means for holding the bottom plate in a non-floating state that does not interfere with human seating,
The bottom plate has a height corresponding to the height of the side stay that connects the legs of the pair of leg portions on the left and right of the leg frame structure 2 at the lower part, and is slightly smaller than the inner width of the leg frame structure. A box-shaped bottom plate having a small internal width,
The box-shaped bottom plate is rotatably connected to the lower part of each front leg in the left and right leg pairs,
Hook means having hooks respectively engageable with the pair of side stays are provided on the left and right side surfaces on the rear side of the box-shaped bottom plate,
In the leg frame structure, as a bottom plate landing restraining means, a flat element is releasably engaged with at least one hook of the hook means to hold the box-shaped bottom plate in a state of leaning forward from a tilted state. And a latch release means for releasing the latch means in an emergency in the leg frame structure.   The latch means is a latch having a vertical surface that is pressed into a flat protruding state by a spring load and can be engaged with the inner surface of the hook, and engages with the outer surface of the hook when the box-shaped bottom plate is leaned forward from a tilted state. The disaster prevention table according to claim 1, wherein the disaster prevention table has a spring load latch having an inclined cam surface for bending the spring load to retract the latch.   The disaster prevention table according to claim 1 or 2, wherein an overhanging cover for covering the foot portion of the chair having a foot portion at the bottom of the chair leg is provided at a rear portion of the box-shaped bottom plate.   The disaster prevention table according to any one of claims 1 to 3, wherein the box-shaped bottom plate is configured to be usable as a container for disaster prevention goods.

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