JP2009213652A - Classroom desk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a classroom desk which prevents the fall and the moving from being generated without requiring the applying of force even at the time of a large earthquake, and which can surely protect a student who has evacuated under the desk. <P>SOLUTION: This classroom desk 1 includes a desk body, a bottom plate 7, and a bottom plate implantation suppressing means. In this case, the desk body consists of a leg frame structure 2 and a top board 3. The bottom plate 7 is movably installed on the desk body so as not to usually be implanted on the floor, and has a slip preventing member 8 having a high frictional coefficient on the bottom surface. Also, the bottom plate 7 is constituted in such a manner that as to be implanted on the classroom floor when the load of the total body of a child or a student who has evacuated under the desk is applied at the time of earthquake, and at the same time, as to press the leg frame structure 2 to the floor surface. The bottom plate implantation suppressing means usually holds the bottom plate 7 under a non-implanted state wherein there is no trouble for the sitting of the child or the student. The bottom plate implantation suppressing means is constituted of, e.g., a load supporting bar 5 which is installed on the bottom section of the leg frame structure 2, and a spacer made of an elastic material, e.g., a spacer pad 6 made of a sponge material. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a classroom desk used in kindergarten or school, and more particularly to a classroom desk that can protect a child or student who has retreated under the desk in the event of an earthquake.

  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, in disaster drills at kindergartens and schools, guidance is given to evacuate under the desk when an initial vibration (P wave) detection alarm is issued in the early 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.

Furthermore, as classroom classrooms that can be retracted and protected in the event of such an earthquake, a punching metal protective plate attached to a frame (see, for example, Patent Document 1), a clasp attached to a table top, etc. Some have a stick. (For example, see Patent Document 1 and Patent Document 2.)
JP-A-9-201237 Japanese Patent Laid-Open No. 11-75943

  However, in the case of such a protectable desk, even if the holding bar is held, the desk itself may fall or move in a large earthquake. Furthermore, in order to prevent the desk from jumping up from the floor, it is necessary to keep holding the desk and pulling the bar downward in order to attract the desk toward the floor, which results in fatigue.

  Therefore, an object of the present invention is to obtain a classroom desk that can reliably protect students who have retreated under the desk without applying force or causing the desk to fall or move even in a large earthquake.

  In order to achieve this object, the classroom desk of the present invention is a desk main body composed of a leg frame structure and a top plate, and a bottom plate that is movably provided on the desk main body so as not to be flat, and has a high coefficient of friction on the bottom surface. A bottom plate configured to have a non-slip member and to be placed on a classroom floor when a load of the entire body of a child or student retreated under a desk is applied during an earthquake, and to press the leg frame structure against the floor surface; The flat is provided with a bottom plate landing deterring means for holding the bottom plate in a non-floating state where there is no hindrance to the child or the student's seating.

  According to the classroom desk of the present invention, when an initial vibration (P wave) detection alarm is issued in the earthquake early warning, the child or the student sits on the bottom plate, and the whole weight of the child and the student is added to the bottom plate. While the edge of the bottom plate presses the leg frame structure against the floor surface, the desk is firmly held on the floor surface by the anti-slip member on the bottom surface of the bottom plate, so that children and students can be reliably protected from falling objects. Furthermore, since the non-slip member of the bottom plate does not contact the floor surface at normal times, it can be moved.

  In a preferred embodiment of the invention, the anti-slip member is an adhesive material, preferably a mat or sheet of adhesive elastomeric material. According to this configuration, the movement of the desk can be reliably prevented.

  Furthermore, in a preferred embodiment of the present invention, the bottom plate landing deterring means is provided at the bottom of the leg frame structure, a load support bar for supporting the edge of the bottom plate, and an elastic material provided on the top surface of the load support bar. Spacer, preferably a spacer pad made of sponge material, which holds the bottom plate floating from the floor surface unless a child or a student is placed on the bottom plate.

  In this embodiment, the bottom plate is guided so as to be moved up and down substantially horizontally along the leg frame structure, or the bottom plate is guided along the leg frame structure in a normal forward leaning position that does not interfere with seating. A holding means is provided which is movable between a position parallel to the floor in the event of an earthquake and is held at a forward leaning position in a normal state. The spacer keeps the bottom plate floating from the floor so that the non-slip member on the bottom of the bottom plate does not land unless a child or student is placed on the bottom plate. Allow movement.

  Furthermore, in another preferred embodiment of the present invention, the bottom plate landing restraining means is connected to the edge of the bottom plate by strap means, and slider means capable of moving up and down in parallel along the leg frame structure. And a guide means provided on the leg frame structure so as to guide the slider means so as to be movable up and down, and a bottom plate holding means for holding the bottom plate in a raised position where there is no hindrance to the seating when the slider means is lowered, The strap means is configured to raise the slider means without slack when the bottom plate is landed. According to this configuration, since the bottom plate is always held at the upper position at normal times, it does not interfere with the seating.

  Further, in this embodiment, the slider means includes a bar member connected to the strap means, an upper edge connected to the bar member, a lower edge connected to the lower part of the leg frame structure, and the slider means A shielding sheet that is folded in an accordion manner when in the lower position, and when the slider means is in the upper position, expands the shielding sheet to close the side surface of the leg frame structure. It consists of. According to this structure, a child or a student can be protected from the scattered matter from the side by the shielding sheet. When the shielding sheet is formed of a transparent reinforced resin sheet, the surrounding situation can be safely seen. Furthermore, in another preferred embodiment, the bottom plate is constituted by a shelf plate for storing containers. According to this embodiment, since the flat shelf plate also serves as the bottom plate, the number of components is small, and a separate bottom plate is not required, so that the weight can be further reduced.

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

  FIG. 1 shows a schematic exploded perspective view of a classroom desk 1 according to a first preferred embodiment of the present invention. The classroom desk 1 includes a leg frame structure 2, a top board 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 board 3. In the first embodiment, load support bars 5 are provided on the bottoms of both sides of the leg frame structure 2, and a spacer pad 6 of sponge material provided on the upper surface of the load support bar 5 is attached. The spacer pad 6 can be made of foamed polyurethane, for example. On the spacer pad 6, the bottom plate 7 is movably mounted. In the embodiment shown in FIG. 1, the load support bar 5 and the spacer pad 6 constitute a bottom plate landing restraining means.

  An anti-slip member 8 having a high friction coefficient is provided on the bottom surface of the bottom plate 7. The anti-slip member 8 can be any member having a high coefficient of friction, but is preferably a mat or sheet of an adhesive elastomer material.

  The sponge-like spacer pad 6 is formed so that the slipper member 8 on the bottom surface of the bottom plate 7 does not land on the floor plate 7 when the child or student sitting on the bottom plate 7 placed thereon puts his / her foot on the floor plate 7 from the floor surface. Thickness and repulsion that allows the anti-slip member 8 to land on the floor surface only when the child or student has slipped under the desk, gets on the bottom plate 7 and is loaded with the total weight when an earthquake occurs. It shall have power.

  In the event of an earthquake, when a child or a student rides on the bottom plate 7 as a whole, the side edges of the bottom plate 7 press the load support bar 5 of the leg frame structure 2 against the floor surface, and the bottom surface of the bottom plate 7 slips. The stop member 8 holds the desk 1 firmly on the floor surface, and can reliably protect the child and the student from falling objects. Normally, the spacer pad 6 holds the bottom plate 7 in a state of floating from the floor surface without causing the non-slip member 8 on the bottom surface of the bottom plate 7 to land. Can move and prevent injury.

  In the embodiment shown in FIG. 1, the bottom plate 7 is configured such that the leg frame structure 2 and the bottom plate 7 are guided so as to be able to translate substantially horizontally along the leg frame structure 2, but the bottom plate 7 extends along the leg frame structure 2. In addition, it is possible to move between a normal forward leaning position where there is no obstacle to seating and a position parallel to the floor in the event of an earthquake, and a holding means for holding at a normal forward leaning position may be provided. it can. Further, in the embodiment shown in FIG. 1, the leg frame structure 2 is a transparent pipe frame structure, but it may be a non-through structure.

  FIG. 2 shows a schematic exploded perspective view of a classroom desk 1 according to a second preferred embodiment of the present invention. The classroom desk 1 includes a leg frame structure 2, a top board 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 board 3.

  In the illustrated embodiment, the leg frame structure 2 includes an inverted U-shaped leg frame 2A on the left and right sides, a lower stay 2a that connects the left and right inverted U-shaped leg frames 2A with each other at a lower portion, and a left and right inverted U A pair of upper stays 2b that connect the character-shaped leg frames 2A to each other at the upper part, and a side stay 2B that connects the pair of leg parts of each inverted U-shaped leg frame 2A at the lower part.

  In the embodiment of FIG. 2, the pair of upper stays 2 b that connect the left and right leg frames 2 </ b> A at the upper part also support the shelf plate 4.

  In the embodiment of FIG. 2, the bottom plate 7 is engaged with the lower surface of the upper stay 2b on the side opposite to the shelf plate 4 that engages with the upper side of the upper stay 2b. In order to maintain this engagement, surface fasteners are provided on at least the lower surface of the end regions on both sides of the upper stay 2b and the upper surface of the bottom plate 5 in contact with the end regions, or the upper surface of the bottom plate 7 is expanded by spring elasticity. A spring clip that can be opened and grips the upper stay 2 is provided, or both a hook-and-loop fastener and a spring clip are provided. Although not shown, as another embodiment, the bottom plate can be foldably and releasably held at the front portion of the leg frame structure. In this case as well, it can be releasably held with hook and loop fasteners and / or spring clips.

  Further, similarly to the embodiment of FIG. 1, an anti-slip member 8 made of an adhesive elastomer material mat or sheet is provided on the bottom surface of the bottom plate.

  In the embodiment shown in FIG. 2, as a bottom plate landing restraining means, a leg frame structure is held in a state of being folded in a bellows-like manner in a lower part of an inverted U-shaped leg frame 2 A in the leg frame structure 2 so as to be released. The shielding sheet 9 that makes each of the three side surfaces open, and strap means 10 that connects the upper edge of the shielding sheet 9 and the bottom plate 7 are configured.

  The lower end edge of the shielding sheet 9 on each side surface is fixed to the lower stay 2a and the side stay 2B, respectively, and the upper end edge of the shielding sheet 9 is provided with slider members 9a. It is preferable that each of them can slide along the guide 11 provided on the inverted U-shaped leg frame 2A.

  The strap means 10 is constituted by a strap made of a non-stretchable material, and is wound around the upper cross bar 2A 'of the inverted U-shaped leg frame 2A and the upper stay 2b of the front portion, and extends smoothly when the bottom plate 7 is landed. In addition, it is assumed that the shield sheet 9 has such a length that it can be expanded to close each of the three side surfaces of the leg frame structure (see FIG. 3). Although not shown, it is preferable to provide guide means for guiding the strap means 10 so that the shielding sheet 9 can be raised and lowered smoothly. Furthermore, when the shielding sheet 9 is formed of a transparent reinforced resin sheet, it is preferable that the surrounding situation can be seen.

  Although not shown, in the embodiment in which the protective sheet or the protective plate is fixed to the three side surfaces of the leg frame structure instead of the bellows opening / closing type shielding sheet, the shielding sheet 9 is omitted, and the connecting means is constituted only by the strap means 10. be able to. It is preferable that this protective sheet or protective plate is made of a transparent reinforced plastic material so that the surrounding situation can be seen.

  FIG. 4 shows an embodiment in which the bottom plate 7 'is also used as a shelf plate 4' for storing goods. In the case of this embodiment, a pair of upper stays 2b for connecting the left and right leg frames 2A at the upper part are arranged at a position higher than the embodiment shown in FIG. 1 to connect the left and right leg frames 2A to each other. To do. In this case as well, the bottom plate 7 '(shelf 4' is placed between the lower surface of the upper stay 2b and the crosspiece 4 "extending over the upper edge of the shelf 4 'with the spring clip 12 and / or the hook-and-loop fastener. Can also be releasably held on the upper stay 2b.

  The present invention classroom desk can be used as a classroom desk in kindergarten, elementary school, junior high school, etc., when an alarm is issued in the event of an earthquake, the child or student retreats under the desk and sits on the bottom plate, The floor plate that has landed securely fixes the desk to the floor surface, and the desk can be reliably protected from falling objects without falling or moving.

It is a disassembled perspective view of 1st Example in this invention classroom desk. It is a disassembled perspective view of 2nd Example in this invention classroom desk. It is a perspective view which shows the state which made the bottom plate of the Example shown in FIG. 1 land. It is a disassembled perspective view of 3rd Example in this invention classroom desk.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Classroom desk 2 Leg frame structure 2A Reverse U-shaped leg frame 2A 'crossbar 2B Side stay 2a Lower stay 2b Upper stay 3 Top plate
4, 4 'shelf plate 4 "bar portion 5 load support bar 6 spacer pad 7 bottom plate 7' bottom plate 8 non-slip member 9 shielding sheet 9a slider member 10 strap means 11 guide 12 spring clip

Claims (9)

At the classroom desk
A desk body composed of a leg frame structure and a top plate;
A flat plate is a bottom plate that is movably provided on the desk body so that it does not land on the floor, and has a non-slip member with a high coefficient of friction on the bottom surface. The bottom plate configured to lay on the classroom floor when joining and to press the leg frame structure against the floor;
A classroom desk comprising a bottom plate landing deterring means for holding the bottom plate in a non-floating state where there is no hindrance to a child or a student's seating.   The classroom desk according to claim 1, wherein the anti-slip member is a mat or sheet of adhesive material.   The bottom plate landing deterring means is a load support bar provided at the bottom of the leg frame structure and supporting an edge of the bottom plate, and a spacer made of an elastic material provided on the upper surface of the load support bar. 3. The classroom desk according to claim 1 or 2, further comprising the spacer that holds the bottom plate in a state of floating from the floor surface as long as no student is placed thereon.   The classroom desk as described in any one of Claims 1-3 comprised so that the said baseplate could be raised / lowered substantially horizontally along the said leg-frame structure.   The bottom plate can be moved along the leg frame structure between a normal forward leaning position that does not interfere with seating and a position parallel to the floor in the event of an earthquake, and is held in a normal forward leaning position. The classroom desk as described in any one of Claims 1-3 which provided the means. The bottom plate landing deterring means,
Slider means connected to the edge of the bottom plate by strap means, and capable of moving up and down in parallel along the leg frame structure;
Guide means provided on the leg frame structure so as to guide the slider means to be movable up and down;
And a bottom plate holding means for holding the bottom plate in a raised position where there is no hindrance to seating when the slider means is lowered, and the strap means raises the slider means without slack when the bottom plate is landed. The classroom desk according to claim 1 or 2, wherein the classroom desk is configured. The slider means includes
A bar member connected to the strap means;
A shielding sheet that connects the upper edge to the bar member, connects the lower edge to the lower part of the leg frame structure, and is folded in a bellows manner when the slider means is in the lower position, 7. The classroom desk according to claim 6, wherein when the slider means is at the upper position, the classroom sheet is constituted by the shielding sheet that is unfolded to close the side surface of the leg frame structure.   The classroom desk capable of retreat protection during an earthquake according to claim 7, wherein the shielding sheet is formed of a transparent reinforced resin sheet.   The classroom desk as described in any one of Claims 6-8 which comprised the said baseplate by the shelf board of a plain.

Images