US20200128954A1 - Cabinet - Google Patents

Abstract

A cabinet which includes a tray formed into a rectangular flat plate shape slidable between a storage position and a drawing position under the top board and above one or a plurality of drawers, space formed between the top board and the tray, and a first extension board and a second extension board turnably attached respectively to both sides of the top board. The first extension board and the second extension board are turnable between a closed position where the first and second extension boards overlap a top surface of the top board and an open position where the first and second extension boards are opened sideways respectively from left and right sides of the top board. The top surface of the top board and top surfaces of the first extension board and the second extension board are arranged on a same plane.

Description

TECHNICAL FIELD
• The present invention relates to a cabinet for office work suitable for use to store various kinds of articles such as documents and lay a laptop or tablet type computer thereon, and specifically relates to a cabinet suitable for use in a consultation room of a hospital and a dental clinic.
BACKGROUND ART
• Conventionally, there is a cabinet for office work used to store various kinds of articles such as documents, for example, as disclosed in Patent Documents 1 and 2. This kind of cabinet is formed in a box shape as a whole, including storable drawers inside and a top board on which the articles can be laid. In addition, casters attached on a bottom surface enables easy displacement of the cabinet without lifting.
• When in use, on one hand, if the above-described cabinet has a wider top board for laying the articles, the usability of the cabinet improves as more documents can be laid thereon. When not in use, on the other hand, the smaller an outer width dimension and overall depth of the cabinet is, the more suitable the cabinet is as the cabinet never needs to occupy larger space.
• Further, the above-described cabinet may be used in a consultation room of medical institutions such as a hospital and a dental clinic. In this case, the cabinet is used also for laying and operating a laptop or tablet type computer and a mouse thereon other than for storing documents such as medical charts. Under such circumstances, it is desirable from the hygienic point of view to store the articles in an isolated place in the consultation room except for the case of using this tablet type and other computer, etc. so that no liquid spray easily splashes thereover.
• Therefore, in the conventional cabinet, these tablet type and other computers, etc. stored in the drawer when not in use need to be taken out from the drawer and then laid on the top board of the cabinet when in use. However, it is annoying and inefficient to take in and out the computer from the drawer each time when in use.
RELATED ART DOCUMENTS Patent Documents
• [Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-111621
• [Patent Document 2] Japanese Patent Laid-Open Publication No. 2003-9967
DISCLOSURE OF THE INVENTION Problem to be Solved by the Invention
• The present invention was made in view of above-mentioned point, and the purpose is to provide a cabinet that can effectively use space on a top board when in use, minimize an outer width dimension and overall depth thereof when not in use, and improve convenience of the operation of a tablet type computer and other devices.
Means for Solving the Problem
• In order to solve the above-described problems, a cabinet (1) as one embodiment in accordance with the present invention includes a top board (2) formed into a rectangular flat plate shape, a first side board (3A) and a second side board (3B) formed into a flat plate shape that are fixed to a bottom surface of or near both sides (2 a, 2 b) of the top board (2) and extend in the downward direction, and one or a plurality of drawers (11-16) formed in a box shape having an opening at an upper part that are slidable under the top board (2) between a storage position between the first side board (3A) and the second side board (3B) where the drawers are stored and a drawing position where the drawers are drawn forward from the storage position. The cabinet (1) includes a tray (20) formed into a rectangular flat plate shape slidable between the storage position and the drawing position under the top board (2) and above the one or the plurality of drawers (11-16), and space (S) formed between the top board (2) and the tray (20). The cabinet (1) also includes a first extension board (5) and a second extension board (6) turnably attached respectively to both sides (2 a, 2 b) of the top board (2). The first extension board (5) and the second extension board (6) are turnable between a closed position where the first and second extension boards (5, 6) overlap a top surface of the top board (2) and an open position where the first and second extension boards (5, 6) are opened sideways respectively from left and right sides of the top board (2). And at the open position, a top surface (2 c) of the top board (2) and top surfaces (5 c, 6 c) respectively of the first extension board (5) and the second extension board (6) are characteristically arranged on a same plane.
• Moreover, a cabinet (1, 1-2) as another embodiment in accordance with the present invention includes a top board (2) formed into a rectangular flat plate shape, a first side board (3A) and a second side board (3B) formed into a flat plate shape that are fixed to a bottom surface of or near both sides (2 a, 2 b) of the top board (2) and extend in the downward direction, and one or a plurality of drawers (11-16) formed in a box shape having an opening at an upper part that are slidable under the top board (2) between a storage position between the first side board (3A) and the second side board (3B) where the drawers (11-16) are stored and a drawing position where the drawers (11-16) are drawn forward from the storage position. The cabinet (1, 1-2) characteristically includes a tray (20) formed into a rectangular flat plate that is slidable between the storage position and the drawing position under the top board (2) and above the one or the plurality of drawers (11-16), and space (S) formed between the top board (2) and the tray (20).
• The cabinet in accordance with the present invention includes the first extension board and the second extension board turnably attached respectively to both sides (namely, both side surfaces) of the top board. These first extension board and second extension board are turnable between the closed position where the first and second extension boards overlap the top surface of the top board and the open position where the first and second extension boards are opened sideways from the left and right sides of the top board. When in use of the cabinet, on one hand, the first extension board and the second extension boards are arranged at the open position where the top surface of the top board and the top surfaces respectively of the first and second extension boards are arranged on the same plane, whereby the top surface of the top board can be effectively used in such a state as to be expanded in width. When not in use of the cabinet, on the other hand, the first and second extension boards are arranged at the closed position where an outer width dimension of the top board can be minimized, whereby the cabinet never needs to occupy large space. In this manner, the cabinet can achieve both convenience when in use and storability when not in use.
• In addition, the cabinet in accordance with the present invention includes the tray slidable between the storage position and the drawing position, and the space formed between the tray and the top board. This enables easy taking in and out and operation of articles such as a tablet type computer. In other words, when arranging the tray at the storage position while the tablet type computer, etc. are laid thereon, on one hand, the tablet type computer, etc. can be stored in the space between the top board and the tray inside the cabinet. On the other hand, when drawing the tray forward and arranging it at the drawing position, the tablet type computer, etc. that were stored inside the cabinet can be taken out of the cabinet while being laid on the tray, and thus held as it is for operation. In this manner, the articles such as the tablet type computer can be stored and taken out for use only by moving the tray between the storage position and the drawing position.
• Therefore, only the drawing in and out of the tray between the storage position and the drawing position enables the operation of the articles such as the tablet type computer while being laid on the cabinet when in use and the storage of the articles in an isolated place when not in use so that no liquid spray easily splashes thereover from the hygienic point of view, thereby achieving the cabinet suitable for use in a consultation room of a hospital and a dental clinic.
• Furthermore, a cabinet (1-3) as another different embodiment in accordance with the present invention includes a top board (2) formed into a rectangular flat plate shape, a first side board (3A) and a second side board (3B) formed into a flat plate shape that are fixed to a bottom surface of or near both sides (2 a, 2 b) of the top board (2) and extend in the downward direction, and one or a plurality of drawers (11-16) formed in a box shape having an opening at an upper position that are slidable under the top board (2) between a storage position between the first side board (3A) and second side board (3B) where the drawers (11-16) are stored and a drawing position where the drawers (11-16) are drawn forward from the storage position. The cabinet (1-3) also includes a first extension board (5) and a second extension board (6) turnably attached respectively to both sides (2 a, 2 b) of the top board (2). The first extension board (5) and the second extension board (6) are turnable between a closed position where the first and second extension boards (5, 6) are arranged respectively along an outer surface of the first side board (3A) and an outer surface of the second side board (3B) and an open position where the first and second extension boards (5, 6) are opened sideways respectively from the left and right sides of the top board (2). At the open position, a top surface (2 c) of the top board (2) and top surfaces respectively of the first extension board (5) and the second extension board (6) are characteristically arranged on a same plane.
• The cabinet in accordance with the present invention includes the first extension board and the second extension board turnably attached respectively to both sides (namely, both side surfaces) of the top board. The first extension board and the second extension board are turnable between the closed position where the first and second extension boards are arranged respectively along the outer surface of the first side board and the outer surface of the second side board and the open position where the first and second extension boards are opened sideways respectively from the left and right sides of the top board. When in use of the cabinet, on one hand, the first and second extension boards are arranged at the open position where the top surface of the top board and the top surfaces respectively of the first extension board and the second extension board are arranged on the same plane, whereby the top surface of the top board can be effectively used in such a state as to be expanded in width. When not in use of the cabinet, on the other hand, the first and second extension boards are arranged at the closed position where an outer width dimension of the top board can be minimized, whereby the cabinet never needs to occupy large space. In this manner, the cabinet can achieve both convenience when in use and storability when not in use.
• Furthermore, the cabinet (1, 1-2, 1-3) may include a baseplate (40) built over between a bottom end of the first side board (3A) and a bottom end of the second side board (3B), and a plurality of casters (41) attached to a bottom surface of the baseplate (40). In this manner, the plurality of the casters attached to the bottom surface of the baseplate enables easy displacement of the cabinet without lifting. Therefore, the cabinet can be used at a desirable place and stored easily at a desirable place.
• Furthermore, the cabinet (1) may include a holder (50) on a surface of the first side board (3A) that can hold documents or files (F) filing the documents. The holder (50) is structured by one or a plurality of bent wire rods (51) fixed to the surface of the first side board (3A). In this manner, by providing the cabinet (1) with the holder that can hold the documents or the files filing the documents, the documents or the files can be held without storing in the drawer. This can improve the handling of the documents or the files needed to be held temporarily without storing, resulting in further improvement of the convenience of the cabinet.
• Moreover, the cabinet (1-2) in accordance with the present invention may include a magnet holder (70) made of a metal sheet-like member attractable by a magnet and attached to the surface of the first side board (3A). The magnet holder enables a memo pad to be stuck with a magnet on the side surface of the cabinet and a magnet-equipped timer to be attached thereon. This leads to further improvement of the convenience of the cabinet.
• It should be noted that the bracketed reference numerals are examples of the elements of the embodiments described later.
Effects of the Invention
• The cabinet in accordance with the present invention can effectively and widely use space on the top board when in use and minimize the outer width dimension and overall depth when not in use, thereby improving convenience of the operation of the tablet type computer and other devices.
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 is a perspective view illustrating a cabinet in accordance with a first embodiment of the present invention;
• FIG. 2 is a perspective view illustrating a state that a top board of the cabinet of the first embodiment is expanded in width;
• FIG. 3 is a perspective view illustrating a cabinet in accordance with a second embodiment of the present invention;
• FIG. 4 is a perspective view illustrating a cabinet in accordance with a third embodiment of the present invention; and
• FIG. 5 is a perspective view illustrating a state that a top board of the cabinet of the third embodiment is expanded in width.
MODE FOR CARRYING OUT THE INVENTION
• Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
First Embodiment
• FIG. 1 is a perspective view illustrating a cabinet in accordance with a first embodiment of the present invention. The cabinet 1 shown in the figure includes a top board 2 that is a flat plate in rectangular shape spreading horizontally, a left side board (namely, a first side board) 3A that is a flat plate spreading vertically and of which an upper end is fixed on a bottom surface near a left side 2 a of the top board 2, and a right side board (namely, a second side board) 3B that is a flat plate spreading vertically on the opposite side of the first side board 3A and of which an upper end is fixed on a bottom surface near a right side 2 b of the top board 2.
• In addition, the cabinet 1 includes a plurality of drawers 11-16 having body sections 11 a-16 a formed in a box shape having an opening at an upper part (namely, a top surface) and handles 11 b-16 b attached to a surface of a front side (namely, a front surface) of the body sections 11 a-16 a. The plurality of drawers 11-16 are slidable under the top board 2 between a storage position between the first side board 3A and the second side board 3B where the drawers 11-16 are stored and a drawing position where the drawers 11-16 are drawn forward from the storage position. It should be noted each of the figures shows the storage position where the drawers 11-16 are stored, but not the drawing position.
• Furthermore, the cabinet 1 includes a tray 20 formed into a rectangular flat plate shape spreading horizontally. The tray 20 is arranged under the top board 2 and above the uppermost drawer 16 of the plurality of drawers 11-16, and slidable under the top board 2 between the storage position between the first side board 3A and the second side board 3B where the tray 20 is stored and the drawing position where the tray 20 is drawn forward from the storage position. The tray 20 includes a body section 20 a formed into a flat plate shape spreading horizontally and a handle 20 b provided on a surface of a front side (namely, a front surface) of the body section 20 a. Space S is formed between a top surface 20 c of the tray 20 and a bottom surface of the top board 2 so as to be storable of articles such as a tablet type computer P and a mouse M. For instance, this space S may be around eight to ten centimeters in dimension.
• In addition, the cabinet 1 includes a left extension board (first extension board) 5 and a right extension board (second extension board) 6, of which a left side (namely, a left side surface) 5 a and a right side (namely, a right side surface) 6 a are turnably attached respectively to a left side (namely, a left side surface) 2 a and a right side (namely, a right side surface) 2 b of the top board 2 with a hinge 30. The left extension board 5 and the right extension board 6 are turnable with the hinge 30 as a supporting point between a closed position, as shown in FIG. 1, where the left and right extension boards 5, 6 overlap a top surface of the top board 2 and an open position, as shown in FIG. 2, where the left and right extension boards 5, 6 are opened sideways respectively from the left and right sides of the top board 2. And, at the open position as shown in FIG. 2, the top surface 2 c of the top board 2, a top surface 5 c of the left extension board 5 and a top surface 6 c of the right extension board 6 are arranged on a same plane (namely, a same horizontal surface). Thus, the top surface 2 c of the top board 2 is expanded to the left and right directions so as to be approximately two times wider than at the closed position.
• Furthermore, the cabinet 1 includes a baseplate 40 built over between a bottom end of the left side board 3A and a bottom end of the right side board 3B and casters 41 attached to four corners of a bottom surface of the baseplate 40. The baseplate 40 is a rectangular flat plate spreading horizontally in parallel with the top board 2.
• Moreover, a clinical chart holder 50 that can hold a clinical chart F consisting of files, etc. filing documents is provided on a surface of the left side board 3A of the cabinet 1. The clinical chart holder 50 is structured by three metal wire rods 51 bent in a nearly U-shape fixed on the surface of the left side board 3A. Of the three wire rods 51, the upper two hold a side surface of the clinical chart F, and the lower one holds a bottom end of the clinical chart F. Accordingly, the three wire rods 51 can hold the clinical chart F on the surface of the left side board 3A just by inserting the clinical chart F from above the three wire rods 51.
• Thus, the cabinet 1 of this embodiment includes the left extension board (first extension board) 5 and the right extension board (second extension board) 6 turnably attached respectively to both sides 2 a, 2 b of the top board 2. The left extension board 5 and the right extension board 6 are turnable between the open position where the left and right extension boards 5, 6 overlap the top surface 2 c of the top board 2 and the closed position where the left and right extension boards 5, 6 are opened sideways respectively from the left and right sides of the top board 2. At the open position, the top surface 2 c of the top board 2 and the top surfaces 5 c, 6 c respectively of the left extension board 5 and the right extension board 6 are arranged on the same plane. When in use of the cabinet 1, on one hand, the left and right extension boards 5, 6 are arranged at the open position, whereby the top surface 2 c of the top board 2 can be effectively used in such a state as to be expanded in width. When not in use of the cabinet 1, on the other hand, the left and right extension boards 5, 6 are arranged at the closed position where the outer width dimension of the top board 2 can be minimized, whereby the cabinet 1 never needs to occupy large space. In this manner, the cabinet 1 can achieve both convenience when in use and storability when not in use.
• Moreover, the cabinet 1 of this embodiment includes the tray 20 slidable between the storage position and the drawing position, and the space S formed between the tray 20 and the top board 2. This enables easy taking in and out and operation of the articles such as the tablet type computer P. Namely, when arranging the tray 20 at the storage position while the tablet type computer P, etc. are laid thereon, on one hand, the tablet type computer P, etc. can be stored in the space S between the top board 2 and the tray 20 inside the cabinet. On the other hand, when drawing the tray 20 forward and arranging it at the drawing position, the tablet type computer P, etc. that were stored in the cabinet 1 can be taken out of the cabinet 1 while being laid on the tray 20, and thus held as it is for operation. In this manner, the articles such as the tablet type computer P can be stored and taken out for use only by moving the tray 20 between the storage position and the drawing position.
• Thus, only the drawing in and out of the tray 20 between the storage position and the drawing position enables operation of the articles such as the tablet type computer P while being laid on the cabinet 1 when in use and storage of the articles in an isolated place when not in use so that no liquid spray easily splashes thereover from the hygienic point of view, thereby achieving the cabinet 1 suitable for use in a consultation room of a hospital and a dental clinic.
• Further, the cabinet 1 includes the plurality of the casters 41 attached to the bottom surface of the baseplate 40. Thus, the casters 41 attached to the bottom surface of the baseplate 40 enables easy displacement of the cabinet without lifting. Therefore, the cabinet 1 can be used at a desirable place and stored easily at a desirable place.
• Furthermore, the cabinet 1 of this embodiment includes the clinical chart holder 50 on the surface of the first side board 3A that can hold the documents or the clinical chart F of the files filing the documents. The clinical chart holder 50 is structured by the plurality of bent wire rods 51 fixed on the surface of the first side board 3A. This clinical chart holder 50 can hold the clinical chart F without storing in the drawers 11-16. This can improve the handling of the documents such as the clinical chart F needed to be held temporarily without storing, resulting in further improvement of the convenience of the cabinet 1.
Second Embodiment
• Next, a second embodiment of the present invention will be described below. In the description of the second embodiment and the corresponding figures, like reference characters refer to components corresponding or equivalent to those of the first embodiment, and a detailed description thereof is dispensed with. The features other than those described as below are the same as in the first embodiment. This applies to the other embodiments.
• FIG. 3 is a perspective view illustrating a cabinet 1-2 of the second embodiment of the present invention. On one hand, the cabinet 1 of the first embodiment includes the left extension board (first extension board) 5 and the right extension board (second extension board) 6 turnably attached respectively to the left side (namely, the left side surface) 2 a and the right side (namely, the right side surface) 2 b of the top board 2 with the hinge 30. On the other hand, the cabinet 1-2 of this embodiment never includes the left extension board 5 and the right extension board 6.
• In addition, the cabinet 1-2 of this embodiment includes a fence 60 attached near an outer periphery of a top surface 2 c of a top board 2. The fence 60 is a member made of three metal wire rods 61 bent in a nearly U-shape and attached respectively near left and right sides 2 a, 2 b and a rear end side of the top surface 2 c of the top board 20. This fence 60 can prevent the articles laid on the top surface 2 c of the top board 2 from falling down.
• Moreover, the cabinet 1-2 of this embodiment includes a magnet holder (or sheet) 70 attached to a surface of a first side board 3A while the cabinet 1 of the first embodiment includes the clinical chart holder 50 on the surface of the first side board 3A. This magnet holder 70 is made of a metal sheet-like member attractable by a magnet.
• The cabinet 1-2 of this embodiment also includes a tray 20 slidable between a storage position and a drawing position, and space S formed between the tray 20 and the top board 2. This enables easy taking in and out and operation of articles such as a tablet type computer P.
• Further, as shown in FIG. 3, as the cabinet 1-2 of this embodiment includes the magnet holder 70, a memo pad 73 and a magnet-equipped timer 71 can be stuck on the surface of the left side board 3A of the cabinet 1-2 with a magnet 72. This enables further improvement of convenience of the cabinet 1-2.
Third Embodiment
• Next, a third embodiment of the present invention will be described below. FIG. 4 is a perspective view illustrating a cabinet in accordance with a third embodiment of the present invention. FIG. 5 is a perspective view illustrating a state that a top board of the cabinet of the third embodiment is expanded in width. As illustrated in these figures, the cabinet 1-3 of the third embodiment includes a left extension board (first extension board) 5 and a right extension board (second extension board) 6 turnably attached respectively to a left side (namely, a left side surface) 2 a and a right side (namely, a right side surface) 2 b of a top board 2 with a supporting metal fitting 30. The left extension board 5 and the right extension board 6 are turnable between a closed position, as shown in FIG. 4, where the left extension board 5 and the right extension board 6 are arranged respectively along an outer surface of a first side board 3A and an outer surface of a second side board 3B and an open position, as shown in FIG. 5, where the left and right extension boards 5, 6 are opened sideways respectively from left and right sides of the top board 2. And, at the open position as shown in FIG. 5, the left extension board 5 is supported from a bottom surface side by a supporting metal fitting 30 built over from the left side board 3A, and the right extension board 6 is supported from a bottom surface side by a supporting metal fitting 30 built over from the right side board 3B. Accordingly, a top surface 2 c of a top board 2, a top surface 5 c of the left extension board 5 and a top surface 6 c of the right extension board 6 are arranged on a same plane (namely, a same horizontal surface). Thus, the top surface 2 c of the top board 2 is expanded to the left and right directions so as to be wider than at the closed position.
• In this manner, the cabinet 1-3 of this embodiment includes the left extension board (first extension board) 5 and the right extension board (second extension board) 6 turnably attached respectively to the left and right sides 2 a, 2 b of the top board 2. The left extension board 5 and the right extension board 6 are turnable between the closed position where the left and right extension boards 5, 6 are arranged respectively along the outer surface of the first side board 3A and the outer surface of the second side board 3B and the open position where the left and right extension boards 5, 6 are opened sideways respectively from the left and right sides of the top board. The top surface 2 c of the top board 2 and the top surfaces 5 c, 6 c respectively of the left extension board 5 and the right extension board 6 are arranged on the same plane. Thus, when in use of the cabinet 1-3, on one hand, the left and right extension boards 5, 6 are arranged at the open position, whereby the top surface 2 c of the top board 2 can be effectively used in such a state as to be expanded in width. When not in use of the cabinet 1-3, on the other hand, the left and right extension boards 5, 6 are arranged at the closed position where an outer width dimension of the top board 2 can be minimized, whereby the cabinet 1-3 never needs to occupy large space. In this manner, the cabinet 1-3 can achieve both convenience when in use and storability when not in use.
• While one embodiment of the present invention has been described above, the invention is not limited to the above-mentioned embodiment, but various modifications are possible within the scope of the technical idea as defined in the claims, the specification, and the drawings. Any shape, structure or material which is not directly described in the specification and drawings falls within the scope of the technical idea of the present invention as long as it has operation and effect of the present invention.

Claims (6)

1. A cabinet for using in a consultation room such as a hospital and a dental clinic, the cabinet comprising:

a top board formed into a rectangular flat plate shape;

a first side board and a second side board formed into a flat plate shape, the first side board and the second side board fixed to a bottom surface of or near both sides of the top board and extending in a downward direction;

one or a plurality of drawers formed in a box shape having an opening at an upper part, the one or the plurality of the drawers slidable under the top board between a storage position between the first side board and the second side board where the drawers are stored and a drawing position where the drawers are drawn forward from the storage position;

a tray formed into a rectangular flat plate shape, the tray slidable between the storage position and the drawing position under the top board and above the one or the plurality of drawings; and

space formed between the top board and the tray;

wherein the cabinet comprises a first extension board and a second extension board turnably attached respectively to both sides of the top board;

wherein the first extension board and the second extension board are turnable between a closed position where the first and second extension boards overlap a top surface of the top board and an open position where the first and second extension boards are opened sideways respectively from left and right sides of the top board;

wherein the top surface of the top board and top surfaces of the first extension board and the second extension board are arranged on a same plane;

wherein a holder is provided on a surface of the first side board so as to hold documents or files filing the documents; and

wherein the holder is structured by one or a plurality of bent wire rods fixed on the surface of the first side board.

2. A cabinet for using in a consultation room such as a hospital and a dental clinic, the cabinet comprising:

a top board formed into a rectangular flat plate shape;

a first side board and a second side board formed into a flat plate shape, the first side board and the second side board fixed to a bottom surface of or near both sides of the top board and extending in the downward direction;

one or a plurality of drawers formed in a box shape having an opening at an upper part, the one or the plurality of drawers slidable under the top board between a storage position between the first side board and the second side board where the drawers are stored and a drawing position where the drawers are drawn forward from the storage position;

a tray formed in a rectangular flat plate shape, the tray slidable between the storage position and the drawing position under the top board and above the one or the plurality of drawers; and

space formed between the top board and the tray;

wherein a holder is provided on a surface of the first side board so as to hold documents or files filing the documents; and

wherein the holder is structured by one or a plurality of bent wire rods fixed on the surface of the first side board.

3. A cabinet for using in a consultation room such as a hospital and a dental clinic, the cabinet comprising:

a top board formed into a rectangular flat plate shape;

a first side board and a second side board formed into a flat plate shape, the first side board and the second side board fixed to a bottom surface of or near both sides of the top board and extending in the downward direction; and

one or a plurality of drawers formed in a box shape having an opening at an upper part, the one or the plurality of drawers slidable under the top board between a storage position between the first side board and the second side board where the drawers are stored and a drawing position where the drawers are drawn forward from the storage position;

wherein the cabinet comprises a first extension board and a second extension board turnably attached respectively to both sides of the top board;

wherein the first extension board and the second extension board are turnable between a closed position where the first and second extension boards are arranged respectively along an outer surface of the first plate and an outer surface of the second plate and an open position where the first and second extension boards are opened sideways respectively from left and right sides of the top board;

wherein a top surface of the top board and top surfaces of the first extension board and the second extension board are arranged on a same plane;

wherein a holder is provided on a surface of the first side board so as to hold documents or files filing the documents; and

wherein the holder is structured by one or a plurality of bent wire rods fixed on the surface of the first side board.

4. The cabinet according to claim 1, the cabinet comprising:

a baseplate built over between a bottom end of the first side board and a bottom end of the second side board; and

a plurality of casters attached to a bottom surface of the baseplate.

5. (canceled)

6. The cabinet according to claim 1, wherein a magnet holder made of a metal sheet-like member attractable by a magnet, the magnet holder provided on the surface of the first side board.

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