Cot

Abstract

To provide a simple bed easy to assemble and fold, storable in a book-like shape, easy to carry, and allowing even an older person to easily stand up therefrom.SOLUTION: A simple bed 10 is foldable in a book-like shape, and a bed body 12 has a cross lattice shape stretchable in a bed length direction in which both side faces in a bed width direction are not blocked by right and left side plates. Thus, the simple bed 10 is easy to assemble and fold, compactly storable in a book-like shape, and allowing even an older person to easily stand up from the simple bed 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a simple bed that can be used, for example, in evacuation shelters during disasters. [Background technology]

[0002] 2. Description of the Related Art When disasters such as earthquakes and typhoons occur, an example of a simple bed used by disaster victims at evacuation shelters is the simple bed described in Patent Document 1. This conventional bed has two simple bed bodies that are rectangular in plan view. Each simple bed body has a lattice-like bed body with multiple square cylindrical bases (cells) arranged lengthwise and widthwise in the internal space of a rectangular frame plate made up of front, back, left and right plates, and a top plate (floor plate) that can be bent into a V shape around the midpoint in the length direction and has both ends in the length direction connected to the left and right plates of the partial bed body.

[0003] When folding the bed, the top plate of each simple bed body is folded at the midpoint in the length direction. This causes the angle (inner angle) of one of the two opposing corners of each base to change from approximately 90 degrees to approach 0 degrees, and the angle (inner angle) of the other opposing corner to change from approximately 90 degrees to approach 180 degrees when folded. This eliminates the rectangular cylindrical space of each base, allowing the bed to be folded compactly and stored without requiring a large space.

[0004] On the other hand, when assembling the bed, simply pushing the folded tabletop in the direction of unfolding causes each base to return to its rectangular tubular shape. This makes it easy to assemble each simple bed body. After that, the assembled simple bed bodies can be connected together at their butt joints to form a simple bed. When the bed is in use, the upper opening edges of each base abut against the underside of the top plate to support the top plate. Therefore, even when the weight of the user is applied, the bed does not easily deform, and it is possible to create a durable simple bed body. Furthermore, this conventional bed does not need to be disposed of after use, but can be repeatedly assembled and folded for reuse, and it also has excellent cost performance. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3232263 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0006] However, because the simple bed in Patent Document 1 was composed of two simple bed bodies, assembling and folding the bed was troublesome, and each simple bed body had to be managed separately. Moreover, a simple bed composed of two simple bed bodies was bulky even when folded, making it difficult to carry. Furthermore, since left and right panels are provided on the left and right sides of each simple bed body, for example, when an elderly user tries to stand up, he or she cannot place his or her feet under the sides of the bed, making it difficult for the user to stand up.

[0007] As a result of extensive research, the inventor discovered that all of the above-mentioned problems could be solved if the simple bed could be made foldable into a book shape and the bed body was made in a cross-lattice shape such that both sides in the width direction of the bed were not blocked by left and right panels and the bed could be expanded and contracted in the length direction of the bed, and thus completed the present invention.

[0008] To provide a simple bed that is easy to assemble and fold and can be stored compactly in a book shape, making it easy to carry and allowing even elderly people to easily stand up from the bed. [Means for solving the problem]

[0009] The invention described in claim 1 is bedA simple bed having a rectangular top plate that is long in the length direction and a cross-lattice-shaped bed body that supports the top plate and is extendable in the length direction of the bed, It becomes the floor of the bed The top plate is arranged in the middle of the bed length direction, and the headboard and footboard are arranged at both ends of the bed length direction. Becomes a floorboard A central board portion and a seat portion disposed between the central board portion and the headboard portion Becomes a floorboard A head side plate portion and a center plate portion and a foot board portion are disposed between the head side plate portion and the center plate portion. Becomes a floorboard Foot side plate part Preparation, The head side plate portion has two head side partial plate portions arranged in series in the bed length direction. 、 The foot side plate portion has two foot side partial plate portions arranged in series in the bed length direction, The bed body is a board frame base in which a number of rectangular support plates, each of which is horizontally long, are hung in a foldable cross lattice shape to form a number of rectangular cylindrical spaces with open top and bottom surfaces, and both sides in the bed width direction are open, and the headboard and footboard are connected to the corresponding ends of the bed body in the bed length direction. Along with, When the bed is folded, the top plate is generally U-shaped in the bed length direction, with the central plate portion on the top surface and the head side plate portion and the foot side plate portion on the side surfaces, When assembling the bed, the two folded head side partial boards and the two foot side partial boards are each rotated about the joint with the central board to stand up, and then the headboard is moved toward the head of the bed, and the footboard is moved toward the foot of the bed. As a result, the two head side partial boards and the two foot side partial boards open, and the surfaces of the head side boards, the central board, and the foot side boards become flush with each other. become.

[0010] The simple bed referred to here is, for example, one that can be used in evacuation shelters during disasters. The size of the simple bed is arbitrary. For example, single size, semi-double size, double size, king size, etc. can be mentioned. Although there is no limitation on the load capacity of the simple bed, it is preferable that the load capacity be 180 kN to 300 kN. The material of the top plate is arbitrary. For example, it is possible to adopt paper cardboard, various plastics, etc. In particular, a plastic board is preferable because it is lightweight, has high rigidity, and has excellent flat compressive strength, and is formed by sandwiching a vacuum-formed cylindrical sheet between sheets from above and below. The size of the tabletop can be changed depending on the size of the cot.

[0011] The top plate is composed of a head board and a foot board arranged at both ends in the length direction, and a floor plate excluding these. Of these, the floor plate has a central plate, a head side plate having two head side partial plate parts, and a foot side plate having two foot side partial plate parts. It is preferable that each head side partial plate part is the same size and shape. It is also preferable that each foot side partial plate part is the same size and shape. The tabletop may be a single large plate with creases between each component, or may be divided into multiple pieces at predetermined positions along its length, provided that each divided portion is connected by, for example, connecting tape. The bed body is a wooden frame base that is extendable in the length direction of the bed.

[0012] Here, "both sides in the width direction of the bed are open" means that there is no left side panel on the left side of the cross-lattice shaped bed body, and no right side panel on the right side, so the left and right sides of the bed body are open. The cross lattice shape refers to a shape in which a plurality of parallel support plates rising to the left and a plurality of parallel support plates rising to the right are connected in a crossed state. A quadrilateral cylindrical space is a cylindrical space whose upper and lower openings are square, rectangular, or diamond shaped and which is continuous in the vertical and horizontal directions like a cell. The headboard and footboard may be connected to the corresponding ends of the bed body in any manner. For example, they may be connected using a hooking piece and a hooking slit, or may be connected using a hook-and-loop fastener. They may also be fixed using adhesive or double-sided tape.

[0013] The headboard and footboard may be connected to the corresponding ends of the bed body at any desired locations and by any desired number. The material of the support plate is not limited, and may be, for example, cardboard made of paper, various plastics, etc. However, from the viewpoints of strength and cost, plastic cardboard is preferable. Any number of support plates may be used as long as they are plural.

[0014] The invention described in claim 2 is a simple bed as described in claim 1, characterized in that each of the support plates has a protruding hanging piece at one end in the longitudinal direction, and a hanging slit of a size capable of hanging the hanging piece is formed at the other end in the longitudinal direction, one long side of each support plate is cut from the edge of the one long side at a predetermined pitch in the longitudinal direction to form a plurality of parallel notch slits for hanging corresponding support plates in a crossed state, and the headboard and footboard portions are each provided with board side hanging slits on both sides in the bed width direction, capable of hanging the hanging piece of the corresponding support plate.

[0015] The shape of each of the hook pieces may be arbitrary as long as it is possible for them to be hooked into the corresponding hook slits. The "notch slit" referred to here is a narrow notch cut into the edge of one of the long sides of the support plate. The length of each notch slit is not limited, and may be, for example, the length from the edge of one of the long sides to the mid-height position of the support plate. The shape of the board side retaining slit is arbitrary. For example, it may be the same as the retaining slit.

[0016] The invention described in claim 3 is a simple bed as described in claim 2, characterized in that all of the support plates are the same body having three cut slits that divide one of the long sides into four equal parts, and when the support plates are hung in a cross lattice pattern, a large empty space appears at the head end and foot end of the bed body, which are each bent in a V shape from the midpoint in the longitudinal direction and hung in a cross state on each of the adjacent support plates, thereby forming a plurality of continuous rectangular cylindrical spaces in each of the empty spaces.

[0017] The material of the reinforcing support plate is arbitrary, for example it may be the same material as the support plate or a different material. The size of the reinforcing support plate is not limited. Here, "hooking the reinforcing support plate in a crossed state to the adjacent support plate" means, for example, that in the portion excluding both ends in the length direction of the reinforcing support plate, two other notch slits cut in parallel from the edges of the long sides of each reinforcing support plate at the same pitch as the notch slits are hooked to the corresponding notch slits of a pair of left and right support plates arranged in a crossed state. On the other hand, at both ends in the length direction of the reinforcing support plate, for example, it means that a pair of hook pieces arranged at both ends in the length direction of the reinforcing support plate are hooked to the corresponding hook slits of a pair of left and right support plates one support plate inward from the support plate to which the notch slits are hooked in a crossed state.

[0018] The invention described in claim 4 is a simple bed described in any one of claims 1 to 3, characterized in that an opening for inserting and removing items is formed in at least one of the headboard portion, the footboard portion, and the longitudinal ends of the support plate. The shape, number and position of the access openings are arbitrary.

[0021] Claim 5 The invention described in is characterized in that a common ventilation hole is formed in the top plate at a location facing the intersection of each of the support plates, which can simultaneously ventilate the adjacent rectangular cylindrical spaces. 4 It is a simple bed as described above.

[0022] The shape of the common ventilation hole may be any shape as long as it can simultaneously ventilate the adjacent rectangular cylindrical spaces, and may be, for example, circular, elliptical, rectangular, etc. The number of common ventilation holes is arbitrary. It may be one or more than two. Effect of the Invention

[0023] According to the simple bed of the present invention, when assembling the simple bed folded into a book shape, first, the book-shaped simple bed is turned upside down so that the book body is at the bottom, and the two folded head side partial board parts and the two folded foot side partial board parts are each raised up. Then, the headboard is moved toward the head of the simple bed around the central board of the tabletop, and the footboard is moved toward the foot of the simple bed. As a result, the two head side partial boards and the two foot side partial boards open around their connecting points. Finally, the ends of the head side partial plates are butted together to develop the head side plate, while the ends of the foot side partial plates are butted together to develop the foot side plate, resulting in a single large floor plate consisting of the head side plate, center plate, and foot side plate.

[0024] At that time, since the corresponding ends of the bed body are each connected to the headboard and footboard sections, as the headboard and footboard sections move away from each other, inside the bed body, each support plate moves in the direction of assembling the cross lattice, and the bed body, which had been folded up until then, is assembled into a cross lattice-shaped board frame base in which multiple continuous rectangular cylindrical spaces with open top and bottom surfaces are formed. On the other hand, when folding (storing) the folding bed, the above-mentioned operations for assembling the bed are carried out in reverse order to fold the folding bed.

[0025] This makes it easy to assemble and fold the bed, and when folded, the bed can be stored compactly in a book shape, making it easy to carry the bed. In addition, there are no left or right side panels on either side of the width of the bed body, leaving it open. Therefore, under the left and right sides of the floorboard, there are multiple open triangular spaces arranged at a certain pitch along the length of the bed. As a result, even elderly people can easily stand up by placing their feet under the sides of the bed.

[0026] In particular, according to the invention described in claim 2, when the bed body is manufactured, a group of parallel support plates with a right-upward rise and a group of parallel support plates with a left-upward rise that is upside down are hooked in a crossed state by inserting the corresponding notch slits into each other. Meanwhile, on both sides in the width direction of the bed, the hook pieces of each support plate of each right-upward or left-upward rise group are hooked into the hook slits of the support plates of the corresponding group. In this way, the bed body is manufactured. As a result, a cross-lattice shaped bed body that is extendable and contractible in the length direction of the bed can be manufactured simply and at low cost.

[0027] When connecting the top board and the bed body, a pair of left and right hook pieces arranged on the head side of the bed body are hooked to the corresponding board-side hook slits of the headboard, respectively. Meanwhile, a pair of left and right hook pieces arranged on the foot side of the bed body are hooked to the corresponding board-side hook slits of the footboard, respectively. As a result, the top board and the bed body can be detachably connected by simply performing this simple hooking operation.

[0028] Furthermore, according to the invention described in claim 3, when all support plates have three notched slits arranged on one long side that divide this long side into four equal parts, and each support plate is hung in a cross lattice pattern in which a plurality of rectangular cylindrical spaces are formed in a continuous state to form the bed body, large empty spaces where no rectangular cylindrical spaces exist appear at the head end and foot end of the bed body, reducing the support strength of the tabletop, specifically the head and foot ends of the floorboard. Therefore, a pair of reinforcing support plates, each bent in a V-shape from the middle of its length, is hooked to the adjacent support plates in a crossed state in the corresponding empty space. This forms multiple rectangular cylindrical spaces in a continuous state in each empty space. As a result, the support strength of each end of the head and foot sides of the floorboard can be increased with a minimum number of parts and simple assembly operations.

[0029] Furthermore, according to the invention described in claim 4, an opening for inserting and removing items is formed in at least one of the headboard section, the footboard section, and the longitudinal end section of the support plate, so that valuables, small items, etc. can be stored in the internal space of the bed body through this opening.

[0030] According to the invention described in claim 5, when folding the simple bed, the folded and contracted bed body is sandwiched between the top plate folded into a book shape. After that, the head side plate and the foot side plate are hooked via the hook member, so that this sandwiched state can be maintained. Furthermore, when the folded simple bed is to be transported, it can be carried by gripping the grip members on the head side plate and the grip members on the foot side plate, making the simple bed easy to transport.

[0031] According to the invention described in claim 6, a common ventilation hole that communicates with multiple adjacent rectangular cylindrical spaces is formed in the top plate at the point facing the intersection of each support plate, which prevents the strength of the top plate (bed floor) from decreasing due to the drilling of the common ventilation hole, and allows multiple adjacent rectangular cylindrical spaces arranged inside the bed body to be ventilated simultaneously with one common ventilation hole. This makes it possible to prevent stuffiness in the internal space of the bed body.

[0032] In addition, after the simple bed is assembled, the length of the bed body is always constant because one large floor plate is defined by the head side plate, the center plate, and the foot side plate. At this time, the support plates constituting the bed body are hooked to each other in a crossed state, so the crossing position of each support plate on the top surface of the assembled bed body is also approximately constant. As a result, the common ventilation hole formed in the top plate is positioned at the opposite position to the crossing part of each support plate every time the simple bed is assembled. [Brief description of the drawings]

[0033] [Figure 1] FIG. 1 is a perspective view of a simple bed according to a first embodiment of the present invention in an assembled state. [Diagram 2]FIG. 1 is a plan view of an assembled simple bed according to a first embodiment of the present invention. [Diagram 3] FIG. 2 is a bottom view of the simple bed according to the first embodiment of the present invention in an assembled state. [Figure 4] FIG. 1 is a side view of the simple bed according to the first embodiment of the present invention in an assembled state. [Diagram 5] FIG. 2 is a development view of a table top constituting a part of the simple bed according to the first embodiment of the present invention. [Figure 6] FIG. 2 is a front view of a support plate constituting a part of the simple bed according to the first embodiment of the present invention. [Figure 7] FIG. 2 is a front view of a reinforcing support plate that constitutes a part of the simple bed according to the first embodiment of the present invention. [Figure 8] FIG. 1 is a perspective view showing a folded state of a simple bed according to a first embodiment of the present invention. [Figure 9] FIG. 1 is a perspective view showing a folded and upside-down state of a simple bed according to a first embodiment of the present invention. [Figure 10] FIG. 1 is a perspective view showing a state in which a head side plate and a foot side plate of a simple bed according to a first embodiment of the present invention are raised. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] An embodiment of the present invention will be described in detail below, taking a single-size simple bed as an example. EXAMPLES

[0035] In Figures 1 to 4, reference numeral 10 denotes a simple bed according to a first embodiment of the present invention. This simple bed 10 is a single-size bed (length 190 cm, width 75 cm) and is equipped with a rectangular top plate 11 that is long in the length direction of the bed and can be folded into a book shape, and a cross-lattice shaped bed body 12 that supports the top plate 11 with both ends in the bed length connected to the top plate 11 and is expandable and contractible in the bed length direction. These components will now be described in detail. The top plate 11 is made of a plastic board that is lightweight, highly rigid, and has excellent planar compressive strength, and is formed by sandwiching a vacuum-formed cylindrical sheet between sheets from above and below.

[0036] The table top 11 has a rectangular headboard section 13 and a footboard section 14 arranged at both ends in the longitudinal direction of the bed, a central board section 15 that is elongated in the width direction of the bed and serves as the spine of a book, a rectangular head side board section 16 that is arranged between the central board section 15 and the headboard section 13 and serves as the cover of the book, and a rectangular foot side board section 17 that is arranged between the central section and the footboard section 14 and serves as the back cover of the book (see Figure 5).

[0037] Of these, the portion of the top board 11 excluding the headboard portion 13 and the footboard portion 14 forms the floor board 11 A of the simple bed 10 . The head side plate 16 is divided in half in the bed length direction into two head side partial plate parts 16A and 16B, while the foot side plate 17 is divided in half in the bed length direction into two foot side partial plate parts 17A and 17B.

[0038] In order to prevent stuffiness in the internal space of the bed body 12, each of the head side partial plate parts 16A, 16B and the foot side partial plate parts 17A, 17B is formed with three common ventilation holes 18 arranged in a triangle in a plan view. Each common ventilation hole 18 is arranged directly above (opposite) an intersection part of the support plate 24 of the bed body 12. This is because it prevents a decrease in strength of the floor board 11A due to drilling, and one common ventilation hole 18 can ventilate multiple diamond-shaped (square) cylindrical spaces 12a arranged inside the bed body 12 (see FIG. 3).

[0039] In the assembled simple bed 10, the head side plate 16, the central plate 15, and the foot side plate 17 define one large floor plate 11A, so the length of the bed body 12 is always constant. At this time, the support plates 24 constituting the bed body 12 are hooked so that adjacent ones are crossed, so the crossing positions of the support plates 24 on the upper surface of the assembled bed body 12 are also approximately constant. As a result, the common ventilation holes 18 formed in the top plate (floor plate 11A) 11 are positioned opposite the crossing parts of the support plates 24 (directly above the crossing parts) every time the simple bed 10 is assembled.

[0040] The top plate 11 is divided into three parts, one between the head side partial plate portions 16A and 16B and one between the foot side partial plate portions 17A and 17B. These divided parts are connected to each other via connecting tapes 19. Furthermore, in the head side partial plate portion 16B on the side of the central plate portion 15 and the foot side partial plate portion 17A on the side of the central plate portion 15, a pair of short belt loop slits 20 are formed at the ends on the connecting tape 19 side, spaced apart from each other (see FIG. 5). Both ends of a pair of hanging belts (grip members) 21 are hooked to these belt loop slits 20, respectively.

[0041] Furthermore, in the head side partial plate portion 16B on the central plate portion 15 side, a base end of a long belt-shaped male hook and loop fastener (hook member) 22 is fixed to the middle position of each belt-loop slit 20. In addition, in the foot side partial plate portion 17A on the central plate portion 15 side, a short female hook and loop fastener (hook member) 23 is fixed to the middle position of each belt-loop slit 20.

[0042] As shown in Figures 1, 3 and 4, the bed body 12 is a board frame base in which twelve horizontally long rectangular support plates 24 are hung in a foldable (stretchable) cross lattice shape, forming a number of diamond-shaped cylindrical spaces 12a with open top and bottom surfaces that are continuous in the vertical and horizontal directions. By adopting this structure, both sides in the width direction of the bed are open. In Figure 3, these support plates 24 are divided into a group of six support plates 24A that are parallel to each other and rise to the right, and a group of six support plates 24B that are upside down and parallel to each other and rise to the left.

[0043] As shown in FIG. 6, each support plate 24 is an identical body (member of the same size and shape) made of plastic corrugated cardboard made of polypropylene. Each support plate 24 has a vertically long hole-shaped hook piece 25 protruding from one end in the length direction. Also, the other end of each support plate 24 has a vertically long hook slit 26 formed therein, which has a size that allows the hook piece 25 to be hooked. Each of these hook slits 26 has one end in the length direction bent in an approximately V-shape. The size of each support plate 24 is 93 cm in length and 40 cm in height.

[0044] In addition, as shown in Figures 1 and 6, a total of four vertically elongated male hook-and-loop fasteners 22A are fixed to the central area of ​​one side of each hanging piece 25 on the two pairs of left and right support plates 24 arranged on both sides of the bed body 12 in the longitudinal direction. Three longitudinal cutout slits 27 are formed parallel to one long side of each support plate 24, dividing the long side into four equal parts. Each cutout slit 27 is cut from the edge of one long side to the mid-height of the support plate 24. Further, at the end of each support plate 24 on the hook piece 25 side, an access opening 28 for storing valuables, small items, and other items in the internal space of the bed body 12 is formed. That is, all of the support plates 24 are the same body having three notched slits that divide one long side into four equal parts.

[0045] When making (assembling) the bed body 12, first, a group of six parallel support plates 24A with a right-upward rise and a group of six parallel support plates 24B with a left-upward rise, which are upside down, are hooked in a crossed state with the corresponding notched slits 27 inserted into each other (see FIG. 3). Meanwhile, at the head end and foot end of the bed body 12 (both sides in the length direction of the bed), the hook pieces 25 of the support plates 24A, 24B of each group with a right-upward rise and left-upward rise are inserted into the hook slits 26 of the corresponding groups of support plates 24B, 24A and hooked (see FIG. 1). In this way, the cross-lattice-shaped bed body 12 is made. As a result, the cross-lattice shaped bed body 12 that is extendable in the bed length direction can be produced easily and at low cost.

[0046] Also, here, a plate material having three notched slits 27 formed on one long side that divide the long side into four equal parts is used as each support plate 24. Therefore, at both ends in the longitudinal direction of the bed body 12, a substantially V-shaped empty space S appears in a plan view, which reduces the support strength of the head end and foot end of the floorboard (top board 11) 11A. Therefore, in order to fill these empty spaces S with diamond-shaped cylindrical spaces 12a, horizontally long rectangular reinforcing support plates 29 that are bent into a V shape from the midpoint in the longitudinal direction are provided at the head end and foot end of the bed body 12 (see Figures 3 and 7).

[0047] A vertically long crease (rule) 29a is formed in the middle of each reinforcing support plate 29 in the longitudinal direction. Also, a hook piece 25 protrudes from each end in the longitudinal direction of each reinforcing support plate 29. The size of each reinforcing support plate 29 is 93 cm in length and 40 cm in height. In each of the reinforcing support plates 29, a separate upper cutout slit 27A is formed in the left half 29b separated by each fold 29a at a position that divides the left half 29b in half in the length direction. Meanwhile, in each of the reinforcing support plates 29, a separate lower cutout slit 27B is formed in the right half 29c separated by the fold 29a at a position that divides the right half 29c in half in the length direction.

[0048] After each reinforcing support plate 29 is bent into a V shape, the upper and lower cutout slits 27A, 27B are inserted into the corresponding cutout slits 27 at the head end and foot end of the bed body 12, so that the reinforcing support plate 29 is foldably hooked to the right-shouldered support plate 24A and the left-shouldered support plate 24B arranged on both sides in the longitudinal direction of the bed body 12. At this time, a pair of hooking pieces 25 protruding from both ends in the longitudinal direction of each reinforcing support plate 29 is hooked to the hooking slits 26 of the corresponding support plate 24. As a result, each empty space S is filled with a diamond-shaped cylindrical space 12a that is continuous vertically and horizontally. As a result, the support strength of each end of the head side and foot side of the floor board (top board 11) 11A can be increased with a minimum number of parts and through a simple assembly operation.

[0049] The headboard portion 13 and the footboard portion 14 are each formed on both sides in the bed width direction with a pair of left and right vertically elongated board side hook slits 26A capable of hooking the corresponding hook pieces 25 of the support plate 24. Further, a total of four separate female hook and loop fasteners 23A are fixed to the outer portions of the headboard section 13 and the footboard section 14, the portions being outside the board-side hook and loop slits 26A. The separate male hook and loop fasteners 22A are hooked to the female hook and loop fasteners 23A, respectively. Further, headboard portion 13 and footboard portion 14 each have a separate access opening 28A formed therein, which penetrates through the front and back surfaces and has the letters "D-BED" cut out in a wide manner.

[0050] As shown in Figs. 1 and 5, when the top plate 11 and the bed body 12 are connected, a pair of left and right hook pieces 25 arranged on the head side of the bed body 12 are inserted into a pair of left and right board side hook slits 26A formed on both ends of the headboard 13 in the bed width direction (see Fig. 1). After that, each hook piece 25 is folded outward, and a pair of different male hook fasteners 22A fixed to them are respectively hooked to corresponding different female hook fasteners 23A arranged on the surface of the headboard 13. Also, a pair of left and right hook pieces 25 arranged on the foot side of the bed body 12 are respectively inserted into a pair of left and right board side hook slits 26A formed on both ends of the footboard 14 in the bed width direction. After that, each hook piece 25 is folded outward in the same manner, and a pair of different male hook fasteners 22A are respectively hooked to corresponding different female hook fasteners 23A arranged on the footboard 14.

[0051] This connects the top board 11 and the bed body 12. By simply performing such a simple hooking operation, the top board 11 and the bed body 12 can be detachably connected to each other. When folding the simple bed 10 (when the top board 11 and the bed body 12 are contracted), in order to prevent the contraction of the bed body 12, the hooking state between each board side hooking slit 26A of the headboard section 13 and the footboard section 14 and the two pairs of hooking pieces 25 arranged on both ends of the length of the bed body 12 is released on either the left or right side. The load capacity of the cot 10 thus assembled is 300 kN.

[0052] Next, a method of using the simple bed 10 according to the first embodiment of the present invention will be described with reference to Fig. 1 to Fig. 10. Here, the simple bed 10 is assumed to be folded in advance like a book with the hanging belts 21 facing upward (see Fig. 8). When assembling the bed, first, male hook-and-loop fasteners 22 are removed from female hook-and-loop fasteners 23 and the bed is turned upside down (see FIG. 9). Then, the two folded head side partial plate portions 16A, 16B and the two foot side partial plate portions 17A, 17B are rotated about joints 15a with central plate portion 15 to stand them up (see FIG. 10).

[0053] Next, the headboard portion 13 is gradually moved toward the head of the simple bed 10, while the footboard portion 14 is gradually moved toward the foot of the simple bed 10. As a result, the two head side partial plate portions 16A, 16B and the two foot side partial plate portions 17A, 17B gradually open around the joints 19a of the connecting tapes 19. Finally, the ends of the head side partial plates 16A, 16B are butted together to develop the head side plate 16, and the ends of the foot side partial plates 17A, 17B are butted together to develop the foot side plate 17. This results in a single large floor plate 11A in which the surfaces of the head side plate 16, central plate 15, and foot side plate 17 are flush with each other (see FIG. 2).

[0054] At this time, the headboard section 13 and the footboard section 14 are connected to the corresponding ends of the bed body 12 in the bed length direction. Therefore, as the headboard section 13 and the footboard section 14 move in directions away from each other, inside the bed body 12, each support plate 24 moves in the assembly direction, and the folded bed body 12 is assembled into a cross-lattice board frame base. Finally, insert the two left and right hanging pieces 25 at both ends of the length of the bed body 12, which were removed beforehand, into the two board-side hanging slits 26A arranged on the left and right sides of the headboard 13 and footboard 14, respectively, to return each hanging state to its original state. This completes the assembly of the simple bed 10 (see Figure 1). In this way, the two hanging pieces 25 on the left or right side at both ends of the length of the bed body 12 need to be hung into the corresponding board side hanging slits 26A of the headboard portion 13 and the footboard portion 14, respectively, each time the simple bed 10 is assembled.

[0055] Moreover, when folding the simple bed 10, the above-mentioned operations for assembling the bed are carried out in reverse order. When the bed is in use, the weight of the user is distributed across the bed body 12 made of plastic corrugated board and lattice-like structure via the high-strength plastic board floor plate 11A. Therefore, even if a large adult male uses the simple bed 10, which has a load capacity of 300 kN, there is almost no risk of it losing its shape. In addition, since both sides of the width of the bed body 12 are open without left and right panels, a number of open triangular spaces 12b are arranged at a certain pitch in the bed length direction under the left and right parts of the floor plate 11A. As a result, when a user stands up from the simple bed 10, even an elderly person can easily stand up by placing his / her feet under the side of the bed. Furthermore, when the folded simple bed 10 is to be transported, it can be carried by holding both the hanging belts 21 between the head side plate portion 16 and the foot side plate portion 17, so that the simple bed 10 can be easily transported.

[0056] In addition, since the top plate 11 is made of the above-mentioned high-strength plastic board, and each support plate 24 of the bed body 12 is made of polypropylene plastic cardboard, the simple bed 10 also has the following effects. That is, compared to cardboard made of paper, it is lighter, has higher rigidity, and is resistant to water and dirt. In addition, due to the structure of each material, there is an air layer inside the top plate 11 and the support plate 24, so the bed has a heat insulating effect. Furthermore, for example, as a countermeasure against infection from the new coronavirus or influenza, alcohol disinfection can be performed without any problems. In addition, since the bed body 12 has a height of 40 cm, the distance between the floor plate 11A and the floor can be sufficiently taken, and it is possible to prevent the body from getting cold and the inhalation of dust. Furthermore, since it is a bed with moderate cushioning made of plastic cardboard, etc., it is possible to reduce the burden on the legs and prevent economy class syndrome. Furthermore, since it can be used repeatedly, the simple bed 10 can be stockpiled in local governments and companies, etc., and can be used to quickly respond to disasters, and costs can be reduced compared to conventional beds. [Industrial Applicability]

[0057] The present invention is useful as a simple bed that can be used in evacuation shelters and the like during disasters. [Explanation of symbols]

[0058] 10 Cot 11 Tabletop 12 Bed body 12a Diamond-shaped cylindrical space (square-shaped cylindrical space) 13 Headboard section 14 Footboard section 15 Center plate part 16 Head side plate 16A, 16B Head side plate 17 Foot side plate 17A, 17B Foot side plate 18 Common ventilation hole 21 Suspension belt (grip member) 22 Male hook and loop fastener (hook member) 23 Female hook and loop fastener (hook member) 24 Support plate 25 Latch piece 26 Retaining slit 26A Board side retaining slit 27 Notch slit 28,28A Access port 29 Reinforcement support plate S Empty space

Claims

1. A simple bed comprising a rectangular top plate that is long in the length direction of the bed and a cross-lattice-shaped bed body that supports the top plate and is extendable in the length direction of the bed, The top plate, which serves as the floor plate of the bed, comprises a headboard section and a footboard section arranged at both ends in the length direction of the bed, a central plate section arranged in the middle of the length direction of the bed and serving as the floor plate, a head side plate section arranged between the central plate section and the headboard section and serving as the floor plate, and a foot side plate section arranged between the central plate section and the footboard section and serving as the floor plate, The head side plate portion has two head side partial plate portions arranged in series in the bed length direction, and the foot side plate portion has two foot side partial plate portions arranged in series in the bed length direction, The bed body is a board frame base in which a plurality of rectangular support plates, each of which is horizontally long, are hung in a foldable cross lattice shape to form a plurality of rectangular cylindrical spaces with open top and bottom surfaces, and both sides in the bed width direction are open. The headboard and footboard are connected to the corresponding ends of the bed body in the bed length direction, When the bed is folded, the top plate is generally U-shaped in the bed length direction, with the central plate portion on the top surface and the head side plate portion and the foot side plate portion on the side surfaces, When assembling the bed, the two folded head side partial boards and the two foot side partial boards are each rotated around the joint with the central board to stand up, and then the headboard is moved toward the head of the bed and the footboard is moved toward the foot of the bed, and as a result, the two head side partial boards and the two foot side partial boards open up, so that the surfaces of the head side boards, the central board and the foot side board become flush with each other.

2. Each of the support plates has a hook piece protruding from one end in the length direction, and a hook slit having a size capable of hooking the hook piece is formed at the other end in the length direction, A plurality of parallel cutout slits are formed at a predetermined pitch in one long side of each of the support plates, the cutout slits being cut from the edge of the one long side in the longitudinal direction, for holding the corresponding support plates in a crossed state; The simple bed according to claim 1, characterized in that the headboard and footboard are provided with board-side hooking slits on both sides in the width direction of the bed, capable of hooking hook pieces of corresponding support plates.

3. All of the support plates are identical bodies having three notch slits that divide the one long side portion into four equal parts, A simple bed as described in claim 2, characterized in that a pair of reinforcing support plates are arranged at the head and foot ends of the bed body, where large empty spaces appear when the support plates are hung in a cross lattice pattern, and are bent in a V shape from the midpoint of the length and hung in a cross-shaped manner on each of the adjacent support plates, thereby forming a plurality of continuous rectangular cylindrical spaces in each of the empty spaces.

4. A simple bed as described in any one of claims 1 to 3, characterized in that an opening for inserting and removing stored items is formed in at least one of the headboard portion, the footboard portion, and the longitudinal end portion of the support plate.

5. The simple bed according to claim 4, characterized in that a common ventilation hole is formed in the top plate at a position facing the intersection of each of the support plates, which can simultaneously ventilate the adjacent rectangular cylindrical spaces.

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