JP5526325B2 - Earthquake evacuation desk - Google Patents

Description

  The present invention relates to an earthquake evacuation desk.

  Schoolchildren's desks installed in school classrooms are used for evacuation in the event of an earthquake. A desk in consideration of safety during the evacuation is disclosed in Patent Document 1, for example.

  JP 2006-158940 A

  In the above-mentioned Patent Document 1, the top plate is supported by four leg struts, and the left and right leg struts located at the rear and the front and rear leg struts located at the left and right are separated from each other. Further, the front and rear leg struts positioned on the left and right are connected via gripping means provided at a position where a person who has entered under the top plate can grip. Although the technology about the characteristic schoolchild desk for earthquake resistance is disclosed, this leg has four leg posts, so even if the schoolchild tries to evacuate in the event of an earthquake, the two leg posts in front will sink May be delayed, evacuate late, or hit a leg post.

  The present invention is intended to solve the problem of such a conventional method, and the evacuee can evacuate quickly and safely without hitting the leg or evacuating and delaying. The object of the present invention is to provide an earthquake evacuation desk that can effectively protect people who evacuate from earthquake damage.

Since the present invention is to achieve the above object, a first aspect of the present invention, with somewhat comprises short connecting bar than the longitudinal width of the top plate to the bottom left and right sides of the top plate, the bottom side of the top plate, A sheet metal shelf is fixed with the flanges at both ends sandwiched between the top plate and the connecting bar, and legs are provided so as to extend downward from the left and right connecting bars, respectively, along the bottom. In an earthquake evacuation desk for school children, students, etc., installed on the floor wall through a seat plate provided, one of the left and right legs has a front-rear width of about half of the front-rear length of the connecting bar. It is a vertically long plate-like member with a degree, and the connection bar is arranged substantially concentrically in the front-rear positional relationship so that the front and rear end surfaces are recessed backward and forward and forward and backward So that there is an empty space in each On the other hand, the other of the left and right legs is a plurality of front and rear, and the plurality of them are arranged apart from each other in the front and rear, and the shelf is secured to the upper mounting plate by the seismic auxiliary device This seismic auxiliary device is composed of an upper column and an adjuster shaft extending downward from the mounting plate, a lower column, and a suction cup at the lower end. It is comprised so that it can adsorb | suck to .

As described above, the earthquake evacuation desk of the present invention includes the connection bars slightly shorter than the front and rear widths of the top plate on the left and right sides of the bottom surface of the top plate, and the top plate and the connection bar on the bottom side of the top plate. The sheet metal shelf is fixed with the flanges at both ends sandwiched between them, and legs are provided so as to extend downward from the left and right connecting bars, respectively, through a seat plate provided along the bottom thereof. In the earthquake evacuation desk for school children, students, etc., installed on the floor wall, one of the left and right legs is a vertically long plate whose front and rear width is about half of the front and rear length of the connecting bar. The front and rear end surfaces of the connecting bar are concentrically arranged in the front-rear positional relationship, and the front and rear are vacant spaces in the front and rear, respectively. It is provided to exist on the left and right The other of the legs is a plurality of front and rear, and the plurality of them are arranged apart from each other in the front and rear, and the shelf member is attached by attaching an anti-seismic auxiliary device to the upper mounting plate. The seismic auxiliary equipment is composed of an upper column and adjuster shaft extending downward from the mounting plate, a lower column, and a suction cup at the lower end, and the suction shaft can be adsorbed to the floor wall side by adjusting the length of the adjuster shaft. Because it is configured, it is possible not only to evacuate quickly and safely, but also to effectively protect those who evacuate from earthquake damage, without the evacuating person hitting the leg or evacuating late. An earthquake evacuation desk can be provided.

The cross-sectional view which shows one Embodiment of the earthquake evacuation desk of this invention along the AA line of FIG. The front view seen from the near side of FIG. The left view of FIG. The cross-sectional view which shows a proposal example along the BB line of FIG. The front view seen from the near side of FIG. The left view of FIG. The cross-sectional view which shows the other proposal example along CC line of FIG. The front view seen from the near side of FIG. The left view of FIG. The left view which shows the other example of a proposal of an earthquake evacuation desk. The arrow view from the D direction of FIG. Explanatory drawing which shows the mode of the preparation before evacuation of the proposal example of FIG. Explanatory drawing which shows the mode at the time of entering the evacuation of the proposal example of FIG. The expanded sectional view shown corresponding to the EE line of FIG. The FF line expanded sectional view of FIG. Sectional drawing which expands and shows the principal part corresponding to FIG. The top view which shows the other proposal example of the opening-and-closing lock mechanism of a top plate. GG sectional view taken on the line of FIG. Sectional drawing which shows a mode at the time of making an opening-and-closing lock mechanism into an open state. Sectional drawing which shows a mode at the time of making a top plate into a closed state. The side view which shows the evacuation method of a student desk. The side view which shows the evacuation point of the student desk of FIG. The front view which shows the prior art example about the desk for earthquake evacuation. The left view of the desk and chair of FIG. The front view which shows the other example of a proposal about the desk for earthquake evacuation. The left view of the desk and chair of FIG. The front view which shows the other example of a proposal about the desk for earthquake evacuation. The left view about the desk and chair of FIG. The plane schematic diagram which shows the other example of a proposal of a desk and a chair. The left view which shows the other example of a proposal about an earthquake-proof evacuation desk. The left view about an earthquake-proof evacuation desk. The left view about an earthquake-proof evacuation desk.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In addition, the individual plan (including details) described in each embodiment can be applied to other embodiments.

In these figures, reference numeral 1 denotes a seat plate, which is composed of a pair of left and right strip-shaped plate members, and these seat plates 1 are opened corresponding to the embedding plugs 3 arranged at four locations on the floor wall 2. An anchor bolt 6 with a turning ring 5 screwed through the through hole 4 is detachably fixed on the floor. As a result, there is no risk of the desk blindly damaging due to the impact of the earthquake, and the desk does not move, so evacuation can be performed safely and reliably.
The embedding plug 3 is embedded in a non-protruding state so that it does not become a hindrance when it comes into contact with a cleaning tool or shoes when the anchor bolts 6 are removed and the desk is brought close to clean the classroom floor. Examples of the plug 3 include a nut anchor (main body driving type) and a chemiacal fixing type nut.
When cleaning, the anchor bolts 6 are inserted into a temporary cylinder 7 protruding on the seat plate 1 so as not to be lost.

The left and right seat plates 1 and 1 are connected by a bottom connecting plate 8 at the front position. The desk may be fixed on the floor via the bottom connecting plate 8.
On the seat plate 1, a single left leg 10 and a pair of front and rear right legs 11 are fixed upright.
The right leg 11 is a pair of square or round pipes, and the left leg 10 is a cylinder having a rectangular cross section with rounded corners, but may be a solid wood. The right leg 11 may be an integrated one in which the front and rear are U-shaped or inverted U-shaped.

The left leg 10 is provided with a U-shaped notch (forming a part of an empty space) 12 on the front side of the left leg 10 and is fixed to the front and rear intermediate positions of the seat plate 1. The right leg 11 is provided as two or three (or even four) guard legs so as to effectively counter the load from above when an earthquake occurs.
A connecting bar 13 is connected to the upper surfaces of the left and right legs 10 and 11, and a sheet metal shelf 14 is fixed thereon with a flange interposed therebetween, and a top plate 15 is further provided thereon. It is fixed by a fastening tool.

The left leg 10 has a width W2 that is approximately half the length W1 of the connecting bar 13 that is slightly shorter than the front-rear width of the top plate 15, and is arranged substantially concentrically with the connecting bar 13. The left leg 10 may be positioned at the foremost position as shown in the upper left column of FIG.
Further, the left leg 10 may be formed as an integral frame by bending a pipe as shown in the lower left column of FIG. Furthermore, in the embodiment, the left leg 10 is one, but the right leg 11 may be one. In this case, the upper and lower portions of the left leg 10 are welded and integrated with the connecting bars 13a and 13b having a U-shaped or L-shaped cross section and the like, and the top plate 15 and the seat plate 1 side are connected via the bars 13a and 13b. If you stop it, it will be strong.
Further, as shown in FIG. 2, a gripping bar 16 may be provided in the desk. One of the bars 16 may be fixed to the left leg 10 and the other to the shelf 14, or both ends may be fixed to the shelf 14. Further, as shown in FIG. 2, a cushion 17 on which a evacuated person can sit may be prepared on the floor under the desk. The cushion 17 is usually provided between the shelf member 14 and the gripping bar 16, and the cushion 14 may be removed and laid on the floor during an earthquake.
The connecting bar 13 is not necessary if the legs 11 are formed of bent pipes as in the right column of FIG. 2 and the upper left column of FIG.
In addition, as shown in FIG. 2, an earthquake-proof auxiliary device 170 is provided between the bottom surface of the shelf 14 and the floor wall 2 to prevent the desk from jumping due to an earthquake and to protect the evacuees under the desk from damage caused by the earthquake. May be. The instrument 170 includes upper and lower columns 171 and 172 and an adjuster shaft 173 therebetween. A mounting plate 175 that can be fastened to the center of the shelf member 14 via a fastener 174 is fixed to the upper end of the upper column 171, and a suction cup 176 is attached to the lower end of the lower column 172. The shortened seismic auxiliary device 170 is attached by fixing the mounting plate 175 to the shelf member 14, and can be extended longer by inserting a handle 178 into the through hole 177 of the turnbuckle type adjuster shaft 173 and rotating it. Thereby, the suction cup 176 at the lower end is reliably adsorbed on the bottom wall 2. As a result, the earthquake-resistant auxiliary appliance 170 does not cause the desk to fly, and the appliance 170 can resist the earthquake load from above and protect the evacuees below. As shown in the upper left of FIG. 2, the suction receiving sheet 180 can be fixed on the bottom wall 2 by an adhesive layer material (or adhesive) 179 in order to fix the suction cup 176 more reliably. In place of the suction cup 176, as shown in the lower left of FIG. 2, a disk-shaped fixing pad 181 made of metal, rubber, resin, or the like is provided, and fixed to a fixing sheet 182 of a double-sided adhesive (adhesive) method. Also good. The fixed pad 181 may employ a leg receiving cap 112 shown in FIG. The upper and lower columns 171 and 172 use a common cylindrical pipe, but may have different specifications such as length. Further, the upper column 171 may be passed through a hole formed in the shelf member 14 and the mounting plate 175 may be fixed to the top plate 15. In this case, the instrument 170 may also be attached and fixed to the shelf 14. In these cases, the shelf material 14 may be stronger and stronger than the conventional one.

4 to 6 show examples of proposals . A pair of left and right seats 20 are provided, are turned around the embedding plug 21, and are detachably fixed by anchor bolts 23 with a ring 22. Reference numeral 24 denotes left and right legs, which are seismic resistant plates having a width that is slightly narrower than the longitudinal width of the top plate 25. 26 is a shelf material, and the desk made of these is connected between the left and right legs 24 with a plurality of front connecting bars 27... With an earthquake resistance function and an obstacle receiving function. The upper part of the rear side is connected with the seismic function by the grip bar 28.

  Reference numeral 29 denotes a head cushion for preventing the head from being hit. Two cushions 29 may be combined to be peeled off via a surface fastener to form a seat cushion. Reference numeral 30 in the right column of FIG. 31 is a seating board.

Figures 7 to 9 show other proposed examples . In the proposed example , reference numeral 34 denotes a seat plate, which is detachably fixed by screwing an anchor bolt 35 into the embedding plug. Reference numeral 36 is an upper connecting plate, 37 is a shelf, and 38 is a top plate. Between the seat plate 34 and the upper connecting plate 36, four gas-contained expansion / contraction cylinders 39 are provided.

  The telescopic cylinder 39 includes a cylinder body 40, a rod 42 with a piston 41, and a spring 43. An engagement hole 44 is formed in the peripheral portion of the piston 41, and an engagement with a ring 45 that can be engaged with and disengaged from the hole 44. A mating pin 46 is provided. 47 is an air intake / exhaust plug.

Normally, the top plate 38 is pushed down to oppose the spring 43 and the piston 41 is pushed down while compressing the internal gas under the piston 41, so that the engagement pin 46 is engaged with the engagement hole 44 to move up and down arbitrarily. Do not lock. When you feel an emergency earthquake warning or an earthquake, do not evacuate directly under your desk. . . By pulling all, the repulsive force of the spring 43 and the compressed gas acts on the piston 41 so that the top plate 38 is lifted instantaneously. Then, the space under the desk becomes a high evacuation space, and it becomes easy to evacuate without bending greatly. By evacuating while the top plate 38 is raised, it is possible to effectively protect the evacuated person by absorbing the impact and load from above with the gas and the spring 43. A cushion 48 is provided on the bottom surface of the shelf member 37 so as to ensure safety when the top plate 38 is lowered. Further, the shelf member 37 itself may be structured to be elastically deformable. For example, it is based on a resin net material or a resin perforated plate. Reference numeral 49 denotes a seat connecting plate which connects the seat plates 34. The cylinders 39 may be connected to each other. Although the cylinder 39 is a set of four, it may be a pair of left and right, or may be a single one on the left side and two on the other side such as the left side.

10 to 16 show other proposal examples of the earthquake evacuation desk. As shown in these figures, 55 is a floor wall made of reinforced concrete, on which a seismic evacuation desk is fixed so as not to move due to shaking caused by an earthquake. As shown in FIG. 14, one embedding plug 56 is fixed to a proper position of the floor wall 55, and the upper end thereof is not caught by a cleaning tool or a footwear of a person who cleans the room when cleaning the room. Thus, it is made not to protrude from the floor wall 55. The inner diameter of the plug 56 is a d _2. Reference numeral 57 denotes a seat plate, and a pair of left and right strips are provided. The one embedded plug 56 corresponds to one of the seat plates 57, and one seat plate as shown in FIG. the front and rear intermediate position 57, can open the Zaana 58 with 3 times larger inner diameter d ₃ than the diameter d ₂ as shown in the sectional view of FIG. 14, and more the upper surface of the seat plate 57, a transparent strength For example, a resin upper plate 60 having a through hole 59 is attached.

  The reason why the seat hole 58 of the seat plate 57 is made sufficiently large is that the seat hole 58 is sufficiently large when the desk is moved during cleaning or the like and the seat hole 58 of the seat plate 57 is again aligned with the position of the plug 56. This is because it is easy to fit the seat hole 58 on the lock hole 56a of the plug 56 when it is large. In addition, the transparent upper plate 60 is provided on the seat plate 57 because the through hole 59 is provided to suppress the width of the seat plate (desk) 57 moving due to the earthquake, and the lower portion of the upper plate 60 cannot be seen. Since the anchor pin 62 is difficult to put into the lock hole 56a, it is made transparent.

62 is an anchor pin with a ring 63, the pin 62 is its diameter d _1, the through hole 59 than the d ₁ is formed slightly larger, also the d ₃ is about twice than d ₂ Largely formed. For example, d ₁ is 20 mm in diameter, d ₂ is 40 mm, and d ₃ is 80 mm.
There is only one anchor pin 62 per desk, but two anchor pins may be used. In the case of this two-pin system, one on each of the left and right seat plates 57 or two on one seat plate 57 is provided. Etc.
The upper plate 60 may be omitted, and the pin 62 may be directly inserted into and removed from the plug hole 56a.
A rubber tube may be inserted into the hole 56a of the plug so as to absorb a shock during an earthquake. The same function can also be achieved by making the pin 62 made of rubber that does not break.

  Reference numeral 65 denotes a leg frame, which is a steel round pipe bent into a gate shape, and the left and right ones are the same. The leg frame 65 is reinforced by fixing the front and rear reinforcing bars 66, and is fixed on the seat plate 57 via a bottom plate 67 fixed to the lower end of the frame.

  Between the left and right of the leg frame 65, left and right reinforcing bars 69, 69 are passed. The upper reinforcing bar 69 is connected to the upper front corner of the frame 65, and is rotatably connected to a hinge plate 71 fixed to the front surface of the shelf 70 provided between the leg frames 65. Yes.

  Reference numeral 72 denotes a top plate, which is fixed on the flange 70 a of the shelf member 70. The top plate 72 and the shelf member 70 are integrated, and can be lifted and rotated around the upper reinforcing bar 69 as shown in FIGS. A stopper 73 for defining the lifting angle at that time is projected from the upper reinforcing bar 69 as shown in FIG. 15, and when the top plate 72 is lifted by 0 to 90 degrees, it does not rotate further forward. ing. This is because if it rotates too much, it will harm the previous students. A coil spring with a stopper may be provided between the upper reinforcing bar 69 and the rotating side of the top plate 72 and the like, and the spring may lift the top plate 72 for ease.

Further, as shown by phantom lines in FIG. 10, when an unstable switching spring 78 that connects between the leg frame 65 and the top plate 72 is stretched and the top plate 72 that has been closed is lifted, the upper plate is reinforced. If the top plate 72 that opens beyond the point of the crosspiece 69 is open and conversely closes is closed, the top plate 72 may be closed over the point of the reinforcing crosspiece 69 and closed. In this case, the engagement / disengagement piece 75 may be omitted.
Further, a balance cylinder 79 containing a compressed gas or a spring may be mounted between the leg frame 65 and the shelf member 70. In this case, the engagement / disengagement piece 75 may or may not be provided.

  When cleaning the room, it is necessary to carry a desk. At that time, if the top plate 72 and the shelf member 70 are lifted without permission, it may be difficult to carry and may be dangerous. Therefore, it is necessary to open the top plate 72 only when evacuating due to an earthquake, because the top plate 72 does not lift up freely during cleaning. Therefore, a hole 74 is formed on one side of the top plate 72, and one protrusion of the U-shaped engaging / disengaging piece 75 is inserted into the hole 74 so that the other protrusion is engaged with the lower surface of the leg frame 65.

  In the event of an earthquake, the engagement / disengagement piece 75 is removed and dropped as shown in FIG. 12, so that the disengaged top plate 72 can be opened. Because the top plate 72 is large and opens from the front, evacuation can be performed very easily. Reference numeral 76 denotes a holding bar, which is attached to the bottom of the shelf 70 and is used to close the opened top plate 72 by holding the holding bar 76 and lowering it as shown in FIG. Used to ensure safety by grabbing when evacuating. The top plate 72 can be vertically raised vertically, and in this state, the chair is set up on the leg frame 65 by inserting the legs of the chair into the pipes provided at the four upper ends of the leg frame 65. Thus, the vertical space formed by the leg frame 65 and the chair can be obtained as a wide evacuation space.

In another proposed example shown in FIGS. 17 to 20, the top plate 72 with the shelves 70 is opened upward from the closed state as shown in FIGS. 17 and 18 through the opening operation of FIG. 19 for evacuation as shown in FIG. Fig. 2 shows an open / close lock mechanism that allows the operation of closing again to be easily performed with one push operation.

  The top plate 72 of FIG. 17 shows the left front portion of the top plate, where the lower side of the drawing is the side where the chair is located and the left side is the side on which the left hand of the person sitting on the chair. Of course, this mechanism may be provided on the right side, and the mechanism may be provided on the left and right. A notch 81 is formed in a U-shape in a part of the top plate 72, and a hinge 82 is attached to one side of the left side. An operating plate 83 that is pushed in the notch 81 and a lock piece 84 that has a letter shape and has a sloped cam surface at the bottom are rotatably attached to the hinge 82 as an integral unit. A weight 85 is provided on the outer side of the lock piece 84 so that the operation plate 83 is balanced horizontally.

In normal times, as shown in FIGS. 17 and 18, the lock piece 84 is on the lower side of the leg frame 65, and the top plate 72 is not opened even if it is lifted by cleaning or the like.
During an earthquake, if the operation plate 83 is pushed down as indicated by an arrow H, the lock piece 84 is removed from the leg frame 65 as indicated by an arrow I, and the top plate 72 can be lifted up as indicated by J. When the top plate 72 is lifted, it evacuates to a wide and high space below it. At that time, the top plate 72 is closed, but the lock piece 84 is returned in the direction of the arrow K. However, as shown in FIG. 20, when the top plate 72 is lowered as shown by the arrow L, the lock piece 84 hits the leg frame 65 and the escape operation is performed as shown by the arrow M, so that the locked state shown in FIG.
Incidentally, with the Kakaridahhen 75 In proposed example of Figures 10 16, the proposed example of FIG. 17 to FIG. 20, an operation plate 83 with the lock piece 84, the means for locking the opening and closing the top plate 72 during normal Although it is configured, basically, the type that does not constitute the locking means such as the engagement / disengagement piece 75 and the lock piece 84, that is, in the proposed example of FIGS. freely the type that was opened and closed around the left and right reinforcing bars 69, the proposed example of FIG. 17 and 18, openable and closable around a lateral reinforcing bars 69 in those without the hinge 82 and the lock piece 84 without the notch 81 in the top plate 72 This type is also a basic type of the invention disclosed in FIGS. Further, although the left and right reinforcing bars 69 are used as the center of opening and closing, the center can be constituted by a dedicated rotation support pipe or shaft instead of using the left and right reinforcing bars 69.

FIG. 21 and FIG. 22 show that the space under the desk for schoolchildren and students is high and can be evacuated safely and quickly. In these drawings, reference numeral 400 denotes a seat plate, which is composed of a pair of left and right strips of plate material, and these seat plates 400 are opened corresponding to the embedding plugs 402 arranged at two locations on the floor wall 401. An anchor bolt 403 with a turning ring screwed through the through hole is detachably fixed on the floor. As a result, there is no risk of the desk blindly damaging due to the impact of the earthquake, and the desk does not move, so evacuation can be performed safely and reliably.
The embedding plug 402 is embedded in a non-protruding state so that it does not become an obstacle when it comes into contact with a cleaning tool or shoes when removing the anchor bolts 403. Examples of the plug 402 include a nut anchor (main body driving type) and a chemiacal fixing type nut. When cleaning, the anchor bolts 403... Are inserted into a temporary cylinder that protrudes on the seat plate 400 so as not to be lost.

  On the left and right seat plates 400, a pair of base tubes 405 project from the front and rear, and a slit 406 is formed on the upper side of the base tube 405. On the outer periphery corresponding to the slit 406, A switching stopper 408 that can be switched between the bracket 407 and the inside / outside is provided. Reference numeral 410 denotes a gate-shaped leg frame, and a width connecting member 411 that connects the left and right is integrally bridged between the upper and lower portions, and a front and rear connecting member 412 is provided between the front and rear of each of the left and right frames 410. It is built and reinforced. 413 is a shelf material, 414 is a handle, and 415 is a top plate.

  FIG. 22 shows a procedure for evacuating under the desk in preparation for an earthquake. The leg frame 410 is lifted from the base tube 405 when the student lifts it through the top plate 415, the shelf 413, the leg frame 410 or the like. When the height of the bottom surface of the shelf material 413 is changed from h to H, the switching stopper 408 automatically enters, and the bottom of the leg frame 410 is locked in height. As a result, the under-desk evacuation space becomes high and wide, so that students can complete the evacuation without hitting their heads more freely. When the evacuation is finished, the leg frame 410 can be inserted into the base tube 405 by returning the switching stopper 408 beyond the vertical direction. After that, if the switching stopper 408 is tilted toward the leg frame 410 as shown in FIG.

  23 and 24 show a desk for school children or the like that is generally used in the past. The desk is also used for earthquake evacuation, 650 is a concrete floor wall, and 651 is steel. It is a leg frame made by bending a round pipe into a gate shape. The leg frame 651 includes front and rear reinforcing bars 652 in the middle stage, and a seat cap 653 is fitted at the lower end. A pair of left and right leg frames 651 are provided, and a width reinforcing bar 654 is integrally extended between the left and right sides of the upper and lower stages. Reference numeral 655 denotes a shelf member to which the top plate 656 is fastened and fixed so that the upper end flange is sandwiched between the leg frames 650.

  For example, the one shown in the figure is based on the specification of the new JIS fixed type No. 5 (target height of target: 138 to 151 cm), and the top plate 656 has a width A of 65 cm and a depth B. The inner width C between the leg frames 651 is about 55 cm, and the height D to the top plate 656 is 61 cm. When the chair 658 is also No. 5, the height E to the seat plate 659 is 36 cm, and the total height F of the chair body 660 is 65 cm.

By the way, in the case of such a conventional desk, the height of the shelf material 655 or less, that is, the height of the evacuation space was about as low as 48 cm, so that schoolchildren and students with a height of 138 to 151 cm can be used. When trying to evacuate in the event of an earthquake, the body had to bend about 1 meter, and it was difficult to evacuate and took time. In addition, the inner width C between the leg frames 651 is about 55 cm, and there is a feeling of narrowness with respect to a standard shoulder width, which makes it difficult to evacuate.
Note that there are various types of leg frames 651 and chair legs such as a gate-shaped hem and a reverse-T shape, and various reinforcing bars. Here is an example. The same applies to the following.

Therefore, the above problem was solved by newly creating a high and wide earthquake evacuation desk and chair so that evacuation as shown in FIGS.
662 is a floor wall, 663 is a gate-shaped leg frame, 664 is a front and rear reinforcement bar, 665 is a seat cap, 666 is a width reinforcement bar, 667 is a shelf, 668 is a top plate, 669 is an evacuation handle, a chair 671 includes a chair body 672 and a seat plate 673, and also includes a footrest 674.

In the case of No. 5, which is intended for students with a height of 138 to 151 cm, the table 668 has a width A1 of 75 to 80 cm and an inner width C1 of the leg frame 663 of 65 to 70 cm. In addition, the width is wide enough to allow the person to slip in with a margin, and the depth B is set to 450 or more. The height D1 of the top plate 668 is 80 to 90 cm, which is sufficiently higher than that of FIG. 24 by 20 to 30 cm. The height E1 of the seat plate 673 of the chair is sufficiently higher than that of the conventional one of FIG. 24 by about 20 to 30 cm, and accordingly, a footrest base 674 is attached so that it is convenient for getting on and off, and the chair body. 672 is similarly raised to 90-100 cm.
The chair leg is provided with a protruding piece 675 to be stabilized, and a bottom plate 676 is passed between the legs and fixed by an anchor 677 to be screwed into an embedding plug in the bottom wall 662 to be stabilized. Also good. The desk may also be provided with a seat plate 678 and fixed with an anchor.
Thus, by making the top plate 668 sufficiently high, schoolchildren and students can evacuate quickly with a margin in the event of an earthquake.

FIGS. 27 and 28 show another proposed example. In order to raise the desk and the chair, the desk 680 and the chair 681 of the current specification (including both existing and newly manufactured) are used as they are, and height supplementing means are combined with them. The example which comprises a high desk and chair like the example of FIG.

  The height supplement means includes a pair of left and right table leg supplements 682 and a chair leg supplement 683. The table leg supplement 682 is provided with receiving pipes 686 on the front and rear surfaces of the seat plate 685, and is composed of a pair of left and right. The seat plate 685 is fixed on the floor by an anchor 688 screwed into the embedding plug 687. At the same time, a stopper 690 is fixed in the receiving pipe 686 to receive a leg 689 of a conventional specification at a certain height and set it high. As shown in FIG. 28, the stopper 690 may be a method using a bolt / nut 691 or a method of inserting a metal (including rubber) pipe or rod a (the same applies to a chair hereinafter). In the case of the bolt / nut type, if the through holes of the receiving pipe 686 are provided in a plurality of stages, the common receiving pipe 686 can cope with various specifications.

  The chair leg supplement 683 includes a seat plate 692 that can be fixed by screwing into the embedding plug 687 by the anchor 688, and a pair of front and rear receiving pipes 693 fixed on the seat plate 692, and a footrest is placed on the front side between the left and right pair. A base 694 is fixed. A stopper 695 is fixed in the receiving pipe 693. Thereby, the height D1 of the top plate 696 is increased to about 80 to 90 cm by No. 5, the height E1 of the seat plate 697 of the chair 681 is also increased to about 55 to 65 cm, and a desk that is easy to evacuate, It will be possible to respond easily and cheaply using the existing ones as they are.

FIG. 29 shows another proposed example , and is a schematic plan view of a cross section of a combination of a desk and a chair. 700 is a desk, 701 is a top board, 702 is a leg, 703 is a chair, 704 is a chair leg, the leg 704 of the chair 703 and the leg 702 of the desk are connected by a rotating seat 705, and at the time of evacuation, the chair By turning the leg 704, it becomes easy to slip in even if the front of the desk 700 becomes wide.

  FIG. 30 is a refugeable desk composed of left and right leg frames 708, a top plate 709 and a shelf 710, and the leg frame 708 is formed into a rectangular frame by bending the pipe in three stages to form a strong frame. By adding a front / rear reinforcing bar 711 to the middle stage, a stronger desk is obtained. This desk is of a high type, but it can also be applied to a low type as in the past. A bottom seat plate may be attached to the leg frame 708.

FIG. 31 shows another proposed example . A desk made of a top plate 713, a shelf material 714, and a leg frame 715, and a pair of pipes bent at one stage, are end-welded to form a rectangular frame leg frame 715. It is a strong desk. Reference numeral 716 denotes a seat plate.

  FIG. 32 is also a strong desk, in which a round pipe is bent inwardly in four stages to form a leg frame 718, and one end of the shelf 719 is fixedly supported via its end. Also good.

DESCRIPTION OF SYMBOLS 1 ... Seat board 2 ... Floor wall 3 ... Embedded plug 6 ... Anchor bolt 10, 11 ... Leg 14 ... Shelf material 15 ... Top plate 16 ... Grasping bar.

Claims (1)

There are connecting bars slightly shorter than the front and rear widths of the top plate on the left and right sides of the top plate, and on the bottom side of the top plate, flanges at both ends are sandwiched between the top plate and the connecting bar. Schoolchildren that are made of shelf material, fixed on the floor wall via a seat plate that is provided along the bottom of each leg so that it extends downward from the left and right connecting bars. In an earthquake evacuation desk such as a student, one of the left and right legs is a vertically long plate-like member whose front and rear width is about half of the front and rear length of the connecting bar, and the connecting bar is The left and right legs are arranged so that the front and rear end faces are retracted rearward and forward so that there are empty spaces in the front and rear, respectively, so that they are arranged substantially concentrically in the positional relationship. The other of them is a plurality of front and back Several pieces are arranged apart from each other in the front-rear direction, and the shelf material is attached by attaching an earthquake-resistant auxiliary device to the upper mounting plate, and this earthquake-resistant auxiliary device extends downward from the mounting plate. For earthquake evacuation, the upper column and adjuster shaft, the lower column, and the suction cup at the lower end are constructed so that the suction shaft can be adsorbed to the floor wall by adjusting the length of the adjuster shaft. Desk .

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