JP7779685B2 - Fixture unit - Google Patents

Description

The present invention relates to a furniture unit.

For example, a known furniture unit having a desk (furniture with a tabletop) and a chair installed in a classroom, lecture room, etc., is one in which the desk and chair are each fixed to the floor (see, for example, Patent Document 1). The chair in this furniture unit has legs fixed to the floor, and a seat on which a user sits can slide and rotate to move in a direction facing the desk. When the chair is not in use, the seat is positioned closer to the desk. This allows for more space in front of the chair (opposite the side facing the desk) when the chair is not in use. When a user sits on the seat, they move the seat forward to move it away from the desk, and then sit on the seat between the seat and the desk.

Generally, desk tops are long in the width direction (the direction perpendicular to the direction facing the chair). For this reason, reinforcing material is sometimes provided under the top to prevent the center of the width of the top from bending downward due to the top's own weight or a load applied to the top from above, or to prevent a moment from occurring that would cause the center of the width of the top to bend downward (see, for example, Patent Document 2).

JP 2009-17925 A Patent No. 6763683

If a reinforcing material is provided under the top plate, there is a problem in that the space below the top plate becomes narrow.
In particular, with unit furniture such as the one described above, it is not possible to ensure a wide gap between the chair and the desk even when the chair is moved forward , so users sit on the seat with their legs under the tabletop. If a reinforcing material is provided under the tabletop and the space below the tabletop is narrow, the legs of the user attempting to sit on the seat may come into contact with the reinforcing material, or the user may adopt an awkward position to avoid contact with the reinforcing material, which may put strain on the body.

The present invention aims to provide a furniture unit that does not narrow the space below the tabletop even when a reinforcing material is provided on the tabletop.

In order to achieve the above object, the furniture unit of the present invention comprises a furniture with a tabletop and a chair arranged in front of the furniture with a tabletop, the furniture with a tabletop comprises a tabletop-equipped furniture substructure fixed to a floor surface and a tabletop supported by the tabletop-equipped furniture substructure, the chair comprises a chair substructure fixed to the floor surface and a seat supported by the chair substructure so as to be movable in the front-rear direction, and the tabletop comprises a lower plate portion constituting the underside of the tabletop and a seat portion spaced above the lower plate portion. The table has an upper plate portion that is arranged and forms the upper surface of the tabletop, and a reinforcing member that is arranged in the gap between the lower plate portion and the upper plate portion and extends across the entire width direction that intersects with the front-to-back direction of the tabletop, and at least one of the reinforcing members is arranged forward of the center position of the tabletop in the front-to-back direction, and the user sits on the seating portion in a position that has been moved forward, and the seating portion in the forward position is arranged in a position that overlaps in the vertical direction with the reinforcing member that is arranged forward of the center position of the tabletop in the front-to-back direction .

In this invention, by providing the reinforcing material for the tabletop in the space between the lower and upper plate portions, the reinforcing material does not protrude downward, as would be the case if it were attached to a reinforcing material on the underside of the tabletop. This means that providing the reinforcing material on the tabletop does not narrow the space below the tabletop.

In the furniture unit according to the present invention, the reinforcing material is positioned forward of the center position of the tabletop in the front-to-rear direction.

When a user sits down or stands up from a chair, it is expected that the user will place their hands on the chair-side (front) part of the tabletop and place their weight on the tabletop-equipped furniture unit. By placing reinforcing material on the chair-side part of the tabletop, the strength of the chair-side part of the tabletop can be increased, allowing the tabletop to remain stable even when the user places their weight on the tabletop-equipped furniture unit as described above.

Furthermore, in the furniture unit of the present invention, a plurality of the reinforcing members may be arranged in the front-to-rear direction and provided on the tabletop, and the combined front-to-rear dimensions of the reinforcing members that are located forward of the center position of the tabletop in the front-to-rear direction may be set to be greater than the combined front-to-rear dimensions of the reinforcing members that are located rearward of the center position of the tabletop in the front-to-rear direction.

When a user sits down or stands up from a chair, the furniture unit is expected to place their hands on the chair-side (front) part of the tabletop and place their weight on the tabletop-equipped furniture. The combined front-to-back dimensions of the reinforcing material located on the front side of the tabletop are greater than the combined front-to-back dimensions of the reinforcing material located on the rear side of the tabletop (the side facing away from the chair). This increases the strength of the chair-side part of the tabletop, allowing the tabletop to remain stable even when a user places their weight on the tabletop-equipped furniture as described above.

Furthermore, in the furniture unit according to the present invention, the furniture substructure with a tabletop may have a grounding portion that contacts the floor surface and a tabletop support portion that is provided on the grounding portion and supports the tabletop, and the tabletop support portion may be connected to the tabletop rearward of the center position in the fore-and-aft direction.

By arranging the reinforcing material, even if the back part of the tabletop (the side away from the chairs) is weaker than the front part (the part closest to the chairs), the tabletop-equipped furniture substructure can support the load of the back part of the tabletop.

Furthermore, in the furniture unit according to the present invention, the lower plate portion may be provided with an upwardly extending upright portion at least at the front end.

By using this configuration, the upright portion can increase the strength of at least the front end of the tabletop.

Furthermore, in the furniture unit of the present invention, the thickness dimension of the tabletop may be 10 mm or more and 15 mm or less.

This configuration ensures the strength of the tabletop while also ensuring ample space below it.

According to the present invention, even if a reinforcing material is provided on the top plate, the space below the top plate does not become narrower.

FIG. 1 is a perspective view of a furniture unit according to an embodiment. FIG. 2 is a plan view of a furniture unit according to an embodiment. 3 is a cross-sectional view taken along line AA in FIG. 2. FIG. 4 is an enlarged view of part B in FIG. 3 . FIG. 4 is an enlarged view of part C in FIG. 3 . FIG. 4 is an enlarged view of a portion D in FIG. 3 .

A furniture unit 1 according to an embodiment of the present invention will now be described with reference to Figures 1 to 6. As shown in Figures 1 to 3, the furniture unit 1 according to this embodiment includes one furniture unit 2 with a tabletop and three chairs 3, each positioned in front of the furniture unit 2 with a tabletop.

In the following, the horizontal direction in which the tabletop-equipped furniture 2 and the chair 3 face each other will be referred to as the front-to-back direction (the direction of arrow Y in the drawings), and the horizontal direction perpendicular to the front-to-back direction will be referred to as the width direction (the direction of arrow X in the drawings). In the drawings, the up-down direction is indicated by arrow Z.
In the front-to-back direction, the side where the chairs 3 are arranged relative to the tabletop-equipped furniture 2 is referred to as the front side, and the side where the tabletop-equipped furniture 2 is arranged relative to the chairs 3 is referred to as the rear side. The three chairs 3 are arranged in the width direction. Multiple furniture units 1 are arranged in the width direction and the front-to-back direction in, for example, a classroom or lecture room. Note that only one furniture unit 1 may be installed.

The fixture 2 with a top plate has a pair of fixture substructures 21, 21 with a top plate that are fixed to the floor surface 11, and a top plate 5 that is attached on top of the fixture substructure 21 with a top plate and supported by the pair of fixture substructures 21, 21 with a top plate.
The top plate 5 is a flat plate with a long rectangular surface. The top plate 5 is disposed so that the surface thereof is horizontal and extends in the width direction. The top plate 5 will be described in detail later.

A pair of tabletop-equipped furniture lower structures 21, 21 are arranged with a gap between them in the width direction. As shown in Figures 1 and 3, each of the pair of tabletop-equipped furniture lower structures 21, 21 has a grounding portion 22 that is grounded to the floor surface 11 and a leg member 23 (tabletop support portion) that is supported by the grounding portion 22 and extends in the vertical direction. As shown in Figure 1, the upper end of the leg member 23 of one of the pair of tabletop-equipped furniture lower structures 21, 21 is connected to the vicinity of a corner on one widthwise side and on the rear side (the side away from the chairs 3) of the tabletop 5. The upper end of the leg member 23 of the other tabletop-equipped furniture lower structure 21 is connected to the vicinity of a corner on the other widthwise side and on the rear side of the tabletop 5.

As shown in FIGS. 1 and 3 , the chair 3 has a chair lower structure 31 fixed to the floor surface 11 and a seat 32 supported by the chair lower structure 31 .
The chair substructure 31 includes a grounding portion 33 that is grounded on the floor surface 11, leg members 34 that are supported by the grounding portion 33, and seating portion attachment members 35 that are fixed to the leg members 34 and to which the seating portion 32 is attached. The leg members 34 are elongated, columnar or tubular members that extend linearly. One end 34a of the leg members 34 is rotatably connected to a shaft 331 provided on the grounding portion 33, and the other end 34b is located above. The axis of the shaft 331 extends in the width direction. The leg members 34 are rotatable around the axis of the shaft 331 by a predetermined angle. The leg members 34 are rotatable between a backward tilted state in which the other end 34b is located rearward and lower than when extending vertically, and a forward tilted state in which the other end 34b is located forward and lower than when extending vertically.
The seat attachment member 35 is fixed to the other end 34 b of the leg member 34 .

The seating section 32 has a seat section 321 on which the user sits, and a backrest section 323 that is continuous with the seat section 321. The seat section 321 is attached to the seating section mounting member 35. The backrest section 323 extends upward from the front edge of the seat section 321. The rear edge section 321a of the seat section 321 (the edge section facing the furniture unit 2 with a tabletop) corresponds to the rear edge section of the seating section 32. Hereinafter, the rear edge section 321a of the seat section 321 may be referred to as the rear edge section 321a of the seating section 32. The seating section 32 rotates a predetermined angle around the axis of the shaft section 331 together with the leg members 34. When the leg members 34 are tilted backward, the seating section 32 is positioned at the rear, and when the leg members 34 are tilted forward, the seating section 32 is positioned at the front. The seating section 32 is supported by the chair substructure 31 so that it can move in the front-to-rear direction relative to the tabletop 5. When the seating section 32 moves in the front-to-rear direction, the rear edge 321a of the seating section 32 moves toward or away from the front end 5a of the tabletop 5 (the end on the chair 3 side) in the front-to-rear direction.

As shown in Figure 3, when the seating section 32 is positioned forward with the leg members 34 tilted forward, the upper surface of the seat 321 becomes approximately horizontal, and the backrest extends diagonally upward from the front edge of the seat 321, slightly toward the front. When the seating section 32 is positioned forward, the backrest 323 assumes a diagonal position that gradually moves forward from the bottom to the top, and the rear surface (the surface facing the tabletop-equipped furniture 2) is separated from the front end 5a of the tabletop 5 (the end facing the chair 3). When the seating section 32 is positioned forward, the user can fit between the backrest 323 and the front end 5a of the tabletop 5, allowing them to sit on the seat 321.

As shown in the two front chairs 3 in Figure 1, when the seating portion 32 is positioned rearward with the leg members 34 tilted backward, the seat 321 assumes a slanted position that gradually slopes downward from the front to the rear, and is recessed beneath the tabletop 5. When the seating portion 32 is positioned rearward, the backrest 323 assumes a slanted position that gradually slopes backward from the bottom to the top, with the rear surface (the surface facing the tabletop-equipped furniture 2) coming close to the front end 5a of the tabletop 5 (the end facing the chair 3). When the seating portion 32 is positioned rearward, the seating portion 32 approaches the tabletop-equipped furniture 2, and the seat 321 enters a seat-retained state where it is stored beneath the tabletop 5. A user does not sit on the seating portion 32 in the seat-retained state.

When the leg members 34 are tilted backward, i.e., in the seat storage state, the space in front (behind) the seating portion 32 becomes wider. For example, if the furniture units 1 are arranged in the front-to-rear direction and the furniture unit 2 with a tabletop of the adjacent furniture unit 1 is placed in front of the chair 3, when the leg members 34 are tilted backward and the seating portion 32 moves rearward, the space between the seating portion 32 and the furniture unit 2 with a tabletop in front (behind) the seating portion 32 becomes wider, and people can pass through this space.

In this embodiment, the rear edge 321a of the seat 321 (the edge facing the tabletop-equipped furniture 2) is positioned higher in the seatable state than in the seat-storage state, and is closer to the underside of the tabletop.

The top plate 5 is made of steel. As shown in Fig. 3, the top plate 5 has a lower plate portion 51 that forms the lower surface of the top plate 5, an upper plate portion 52 that is located above the lower plate portion 51 and forms the upper surface of the top plate 5, and a plurality of reinforcing members 53 that are provided between the lower plate portion 51 and the upper plate portion 52 and extend across the entire width of the top plate 5.
The lower plate portion 51 and the upper plate portion 52 are made by processing steel plates.
The upper plate portion 52 is formed to be larger in plan view than the lower plate portion 51 .

As shown in Figures 4, 5, and 6, the lower plate portion 51 has a lower plate portion main body 54 that is arranged along the underside of the tabletop 5, and an upright portion 55 (see Figures 4 and 6) that protrudes upward from the edge of the lower plate portion main body 54. The upright portion 55 has a first upright plate portion 551 that protrudes upward from the edge of the lower plate portion main body 54, and a second upright plate portion 552 that extends inward (toward the center of the tabletop 5 in a plan view) from the upper end of the first upright plate portion 551.

The upper plate portion 52 has an upper plate portion main body 56 arranged along the upper surface of the tabletop 5, a protruding portion 57 protruding downward from the edge of the upper plate portion main body 56, and a surface material 591 provided along the upper surface of the upper plate portion main body 56 and constituting the upper surface of the tabletop 5. The protruding portion 57 has a first protruding plate portion 571 protruding downward from the end of the upper plate portion main body 56, a second protruding plate portion 572 extending inward from the lower end of the first protruding plate portion 571, and an end cover material 592 covering the first protruding plate portion 571 from the front. The first protruding plate portion 571 has a smaller vertical dimension than the first upright plate portion 551.
In this embodiment, a surface material 591 is provided along the upper surface of the upper plate body 56, but the surface material 591 may not be provided and the upper surface of the upper plate body 56 may form the upper surface of the top plate 5.

When the upper plate portion 52 is placed on the lower plate portion 51, the protruding portion 57 of the upper plate portion 52 is positioned outside the standing portion 55 of the lower plate portion 51 (the side facing outward from the top plate 5 in a plan view). The upper plate portion main body 56 overlaps the second standing plate portion 552, the first protruding plate portion 571 is positioned outside the first standing plate portion 551 with a gap between them, and the second protruding plate portion 572 is positioned outside the first standing plate portion 551 at a position higher than the lower plate portion 51. The inner end of the second protruding plate portion 572 contacts the middle portion of the first standing plate portion 551 in the vertical direction from the outside. The lower side of the first standing plate portion 551 is exposed.

A step 58 is formed on the underside of the top plate 5, and is formed by the lower plate body 54, the first upright plate portion 551, and the second protruding plate portion 572. The lower surface of the lower plate body 54 is positioned lower than the lower surface of the second protruding plate portion 572.
The thickness dimension (vertical dimension) of the top plate 5 is, for example, 10 mm or more and 15 mm or less.

The reinforcing member 53 is a long steel member having a C-shaped cross section. The reinforcing member 53 is arranged in a position extending across the entire width of the top plate 5, with the C-shaped cross section opening upward.
The reinforcing members 53 are provided to increase the strength of the tabletop 5. As described above, the tabletop 5 of this embodiment has an elongated shape extending in the width direction. Therefore, when a user places their hands on the tabletop 5 or when an object is placed on the tabletop 5, the central portion of the tabletop 5 in the width direction tends to deform and bend downward. By arranging the reinforcing members 53 so that they extend across the entire width of the tabletop, the strength of the tabletop 5 is increased, and the above-mentioned deformation can be suppressed.

The reinforcing member 53 has a bottom plate portion 531 arranged along the upper surface of the lower plate portion 51, a first side plate portion 532 extending upward from the rear end of the bottom plate portion 531, a first folded plate portion 533 extending forward from the upper end of the first side plate portion 532, a second side plate portion 534 extending upward from the front end of the bottom plate portion 531, and a second folded plate portion 535 extending rearward from the upper end of the second side plate portion 534. The upper plate portion main body 56 is placed on top of the first folded plate portion 533 and the second folded plate portion 535.

A plurality of reinforcing members 53 are provided on the tabletop 5 at intervals in the front-to-rear direction. In this embodiment, three reinforcing members 53 are provided. One of the three reinforcing members, reinforcing member 53A, is provided near the front end 5a of the tabletop 5 (the end on the chair 3 side), as shown in Figures 3 and 4. The other two reinforcing members 53B and 53C are located in the middle of the tabletop 5 in the front-to-rear direction, as shown in Figures 3 and 5. A resin member 593 is provided in the area between the lower plate portion 51 and the upper plate portion 52 where no reinforcing member 53 is provided.

As shown in Figures 2 and 3, the combined front-to-back dimensions of the three reinforcing members 53 located in front of the center position 5b of the table top 5 in the front-to-back direction (towards the chair 3) are set to be greater than the combined front-to-back dimensions of the three reinforcing members 53 located behind the center position 5b of the table top 5 in the front-to-back direction (away from the chair 3).

In the furniture unit 1 according to this embodiment, the reinforcing member 53 of the top plate 5 is provided between the lower plate portion 51 and the upper plate portion 52 and does not protrude below the underside of the top plate 5. Therefore, even if the reinforcing member 53 is provided on the top plate 5, the space below the top plate 5 does not become narrower.

Furthermore, in the furniture unit 1 according to this embodiment, the reinforcing material 53 is positioned forward (towards the chair 3) of the central position 5b in the front-to-back direction of the table top 5.
In the furniture unit 1, it is assumed that when a user sits down on the chair 3 or stands up from the chair 3, they will place their hands on the part of the tabletop 5 facing the chair 3 and put their weight on the furniture unit 2 with a tabletop. By arranging the reinforcing member 53 on the part of the tabletop 5 facing the chair 3, the strength of the part of the tabletop 5 facing the chair 3 can be increased, and the tabletop 5 can be maintained in a stable state even when a user puts their weight on the furniture unit 2 with a tabletop as described above.

In addition, in the furniture unit 1 according to this embodiment, the combined front-to-back dimensions of the three reinforcing members 53 that are located in front of the central position 5b of the table top 5 in the front-to-back direction (towards the chair 3) are set to be larger than the combined front-to-back dimensions of the three reinforcing members 53 that are located behind the central position 5b of the table top 5 in the front-to-back direction (on the side away from the chair 3).
In furniture unit 1, it is assumed that when a user sits down on chair 3 or stands up from chair 3, they will place their hands on the part of tabletop 5 facing chair 3 and put their weight on furniture with tabletop 2. The combined front-to-back dimensions of reinforcing members 53 arranged on the part of tabletop 5 facing chair 3 are greater than the combined front-to-back dimensions of reinforcing members 53 arranged on the side of tabletop 5 facing away from chair 3, which further increases the strength of the part of tabletop 5 facing chair 3, and allows tabletop 5 to remain stable even when a user puts their weight on furniture with tabletop 2 as described above.

In addition, in the furniture unit 1 according to this embodiment, the leg members (tabletop support parts) of the furniture lower structure 21 with tabletop are connected to the rear side (the side away from the chair 3) of the central position 5b in the front-to-back direction of the tabletop 5.
By arranging the reinforcing material 53, even if the strength of the part of the tabletop 5 away from the chair 3 is lower than that of the part of the tabletop 5 on the chair 3 side, the tabletop-equipped furniture lower structure 21 can support the load of the part of the tabletop 5 away from the chair 3.

In addition, in the furniture unit 1 according to this embodiment, the lower plate portion 51 has an upright portion 55 extending upward at the end on the chair 3 side.
With this configuration, the standing portion 55 can increase the strength of at least the end of the table top 5 on the chair 3 side.

In addition, in the furniture unit 1 according to this embodiment, the thickness dimension of the top plate 5 is 10 mm or more and 15 mm or less.
By adopting such a configuration, it is possible to ensure a large space below the top plate 5 while ensuring the strength of the top plate 5 .

While the above describes an embodiment of the furniture unit 1 according to the present invention, the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention. For example, in the above embodiment, the seating portion 32 of the chair 3 is configured to be movable in the front-rear direction relative to the tabletop 5 by rotating the leg members 34 of the chair substructure 31 in the width direction about the axis of the shaft 331. Alternatively, the seating portion 32 may be configured to slide in the front-rear direction relative to the tabletop 5. For example, the seating portion 32 and the leg members 34 may be integrated, and the integrated seating portion 32 and the leg members 34 may be supported by a grounding portion 33 fixed to the floor surface 11 so as to slide in the front-rear direction. Alternatively, the grounding portion 33 and the leg members 34 may be integrated, and the seating portion 32 may be supported by the integrated grounding portion 33 and the leg members 34 so as to slide in the front-rear direction.
The seat 32 may also be supported so as to be rotatable about an axis extending in the vertical direction. For example, the seat 32 may be mounted on a support column (chair substructure) extending in the vertical direction and supported on the floor surface, and configured to be rotatable a predetermined angle about the axis of the support column. In such a case, the support column supports the center of the width of the seat 32. As the seat 32 rotates about the axis of the support column, one side of the rear edge 321a of the seat 321 (the edge on the tabletop-equipped furniture unit 2 side) of the seat 321 moves forward relative to the tabletop 5, and the other side moves backward. In other words, as the seat 32 rotates about the axis of the support column, one side of the rear edge 321a of the seat 32 moves away from the front end 5a of the tabletop 5, while the other side moves closer to the support column.

In the above embodiment, three chairs 3 are provided for one tabletop-equipped furniture 2, but the number of chairs 3 may be set as appropriate.
The dimensions of each member, such as the thickness of the top plate 5, may be set as appropriate.

In the above embodiment, the reinforcing member 53 is disposed forward (toward the chair 3) of the central position 5b in the front-to-rear direction of the table top 5, but the reinforcing member 53 may be disposed at another position between the lower plate portion 51 and the upper plate portion 52. Furthermore, the front-to-rear dimension of the reinforcing member 53 disposed forward (toward the chair 3) of the central position 5b in the front-to-rear direction of the table top 5 does not have to be larger than the front-to-rear dimension of the reinforcing member 53 disposed rearward (away from the chair 3) of the central position 5b in the front-to-rear direction of the table top 5.
That is, the number of reinforcing members 53 and their arrangement in the front-rear direction may be other than those described above.

Furthermore, in the furniture unit 1 according to this embodiment, the leg members (table top support parts) of the table top-equipped furniture lower structure 21 may be connected to the rear side (towards the chair 3) of the center position 5b in the fore-and-aft direction of the table top 5.

In the above embodiment, the end of the lower plate portion 51 is provided with an upwardly extending standing portion 55, but this does not have to be the case. Alternatively, the standing portion 55 may be provided only on the front end (chair 3 side) of the lower plate portion 51. If an standing portion 55 is provided, it may be provided at any position on the end of the lower plate portion 51.

1 Furniture unit 2 Furniture with tabletop 3 Chair 5 Tabletop 5b Central position 11 Floor surface 21 Tabletop-equipped furniture lower structure 22 Grounding portion 23 Leg member (tabletop support portion)
31 Chair lower structure 32 Seating portion 51 Lower plate portion 52 Upper plate portion 53 Reinforcement member 55 Standing portion 321 Seat portion 321a Rear edge portion

Claims (5)

With a tabletop and
A chair placed in front of the furniture with a tabletop,
The fixture with a top plate is:
a fixture substructure with a top plate fixed to the floor;
A top plate supported by the top plate-equipped furniture lower structure,
the chair comprises: a chair substructure secured to the floor;
a seat supported on the chair substructure so as to be movable in the front-rear direction,
The top plate is
a lower plate portion that forms the lower surface of the top plate;
an upper plate portion that is disposed above the lower plate portion with a gap therebetween and that constitutes an upper surface of the top plate;
a reinforcing member provided in the gap between the lower plate portion and the upper plate portion and extending across the entire width direction of the top plate intersecting the front-rear direction ,
At least one of the reinforcing members is disposed forward of a center position in the front-rear direction of the tabletop,
The seating portion is positioned so that the user sits in a forward-moved position, and the seating portion in the forward-moved position is positioned so that it overlaps vertically with the reinforcing material, which is positioned forward of the center position in the front-to-back direction on the tabletop . A plurality of the reinforcing members are arranged in the front-rear direction and provided on the top plate,
A furniture unit as described in claim 1, wherein the combined front-to-back dimensions of the reinforcing materials among the plurality of reinforcing materials that are located forward of the front-to-back center position of the tabletop are set to be greater than the combined front-to-back dimensions of the reinforcing materials among the plurality of reinforcing materials that are located rearward of the front-to-back center position of the tabletop. The furniture lower structure with a top plate includes a grounding portion that is in contact with the floor surface,
a top plate support portion provided on the ground portion and supporting the top plate,
The furniture unit according to claim 1 or 2 , wherein the tabletop support portion is connected to the tabletop rearward of the center position in the front-to-rear direction. The furniture unit according to any one of claims 1 to 3 , wherein the lower plate portion has an upwardly extending upright portion at least at the front end. 5. A furniture unit according to any one of claims 1 to 4 , wherein the thickness of the tabletop is 10 mm or more and 15 mm or less.