Height-adjustable display unit

Abstract

To provide a tabletop lifting type fixture that allows for stable raising and lowering of the tabletop. [Solution] The tabletop lifting type furniture comprises a tabletop and a support structure. The tabletop comprises a first portion of the tabletop extending in a first extending direction, a second portion of the tabletop extending in a second extending direction, and an intermediate portion of the tabletop connecting the first portion and the second portion. The support structure comprises a first end leg that supports the first portion of the tabletop from below at an intermediate position of the first portion of the tabletop in the first depth direction, a second end leg that supports the second portion of the tabletop from below at an intermediate position of the second portion of the tabletop in the second depth direction, and an intermediate leg that supports the intermediate portion of the tabletop from below at a position further back than the intermediate position of the intermediate portion of the tabletop in the intermediate depth direction.

Description

Technical Field

[0001] The present invention relates to a furniture with a liftable top plate.

Background Art

[0002] In workspaces such as offices and public facilities, desks are generally arranged to provide a working area for workers. In such desks, the height of the top plate that is easy to work on varies greatly depending on the physique, gender, preferences, etc. of the worker. For this reason, a desk with a liftable top plate (furniture with a liftable top plate) that can change the height of the top plate up and down has been provided. For example, Patent Document 1 discloses a configuration including legs having a lifting mechanism unit (lifting device) capable of changing the height of the top plate up and down. In such a configuration, the legs having the lifting mechanism unit are provided at both ends in the width direction of the top plate so that the top plate can be lifted and lowered stably.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in some desks, the planar shape of the top plate when viewed from above has a shape other than a rectangle, such as an L shape or a V shape. Even in a furniture with a liftable top plate having such a shaped top plate, it is desired to stably lift and lower the top plate. An object of the present invention is to provide a furniture with a liftable top plate that can stably lift and lower the top plate.

Means for Solving the Problems

[0005] In order to solve the above problems, the present invention adopts the following aspects. (1) A liftable tabletop furniture according to one aspect of the present invention comprises a tabletop having an upward-facing work surface and a support structure that supports the tabletop from below, wherein the tabletop comprises a first portion of the tabletop located at one end in the tabletop's extending direction and extending horizontally in a first extending direction, a second portion of the tabletop located at the other end in the tabletop's extending direction and extending horizontally in a second extending direction, and an intermediate portion of the tabletop connecting the first portion and the second portion of the tabletop, wherein the support structure has a first extendable leg at the end that is extendable vertically and a first contact portion provided at the lower end of the first extendable leg that contacts the floor surface, and a first back portion that intersects the first extending direction horizontally The tabletop has a first end leg that supports the first portion of the tabletop from below at an intermediate position of the first portion of the tabletop in the row direction, a second end telescopic leg body that is extendable in the vertical direction, and a second ground contact portion provided at the lower end of the second end telescopic leg body that contacts the floor surface, and a second end leg that supports the second portion of the tabletop from below at an intermediate position of the second portion of the tabletop in the second depth direction that intersects the second extension direction in the horizontal direction, an intermediate telescopic leg body that is extendable in the vertical direction, and an intermediate ground contact portion provided at the lower end of the intermediate telescopic leg body that contacts the floor surface, and an intermediate leg that supports the intermediate portion of the tabletop from below at a position further back than the intermediate position of the intermediate portion of the tabletop in the intermediate depth direction. In this embodiment, the first end leg supports the first portion of the tabletop from below at an intermediate position in the first depth direction, and the second end leg supports the second portion of the tabletop from below at an intermediate position in the second depth direction. Therefore, both ends of the tabletop can be stably supported by the first and second end legs. In addition, the intermediate leg supports the middle portion of the tabletop from below at a position further back than the intermediate position in the middle depth direction of the tabletop. The middle portion of the tabletop is prone to load on the rear side in the middle depth direction of the tabletop, relative to the portion supported by the first end leg in the first portion of the tabletop and the portion supported by the second end leg in the second portion of the tabletop. In contrast, the intermediate leg supports the middle portion of the tabletop from below at a position further back than the intermediate position in the middle depth direction of the tabletop, thereby providing stable support for the middle portion of the tabletop. Therefore, even when raising and lowering the tabletop by extending or retracting the first end leg, the second end leg, and the intermediate leg, the tabletop can be raised and lowered stably.

[0006] (2) In the tabletop lifting type furniture according to the embodiment of (1) above, it is preferable that the intersection of a first imaginary line passing through the center in the first depth direction of the first portion of the tabletop and extending in the first extension direction, and a second imaginary line passing through the center in the second depth direction of the second portion of the tabletop and extending in the second extension direction, is positioned to overlap with the middle portion of the tabletop when viewed from above, and that the middle leg is positioned further back than the intersection in the depth direction of the middle portion. According to this embodiment, by positioning the intermediate leg towards the rear in the depth direction of the intermediate portion at the intersection of the first and second virtual lines, which are positioned to overlap with the intermediate portion of the tabletop, the intermediate portion of the tabletop, which is prone to load, can be stably supported.

[0007] (3) In a tabletop lifting type furniture according to the embodiment of (1) or (2) above, it is preferable that the furniture further comprises: a first reinforcing beam extending in the first extending direction along the lower surface of the first portion of the tabletop and connected to the upper end of the first end telescopic leg and the upper end of the intermediate telescopic leg; and a second reinforcing beam extending in the second extending direction along the lower surface of the second portion of the tabletop and connected to the upper end of the second end telescopic leg and the upper end of the intermediate telescopic leg. According to this embodiment, since it includes a first reinforcing beam connecting the upper end of the first end telescopic leg and the upper end of the intermediate telescopic leg, and a second reinforcing beam connecting the upper end of the second end telescopic leg and the upper end of the intermediate telescopic leg, the support structure can be made stronger and the tabletop can be stably supported.

[0008] (4) In the tabletop lifting type furniture according to the embodiment of (3) above, it is preferable that the first reinforcing beam is positioned on the rear side in the first depth direction relative to the upper end of the first end telescopic leg body, and the second reinforcing beam is positioned on the rear side in the second depth direction relative to the upper end of the second end telescopic leg body. According to this embodiment, the first reinforcing beam and the second reinforcing beam can be positioned further back in the first and second depth directions, respectively. This makes it less likely for the user's lower limbs, drawers located beneath the tabletop, chairs or cabinets stored beneath the tabletop, etc., to interfere with the first and second reinforcing beams.

[0009] (5) In the tabletop lifting type furniture according to the embodiment of (4) above, it is preferable that a connecting member is further provided, which extends in the depth direction of the intermediate portion along the lower surface of the intermediate portion of the tabletop and connects one end of the first reinforcing beam, one end of the second reinforcing beam, and the upper end of the intermediate portion telescopic leg body. According to this embodiment, by connecting one end of the first reinforcing beam and one end of the second reinforcing beam with the upper end of the intermediate telescopic leg body via a connecting member extending in the depth direction of the intermediate section, the intermediate leg can be positioned further back in the depth direction of the intermediate section. This allows for more stable support of the intermediate section of the tabletop, which is prone to loads.

[0010] (6) In the overhead lifting type furniture according to the embodiment of (5) above, the connecting member preferably comprises a connecting member body whose rear end on the rear side in the depth direction of the intermediate part is connected to the upper end of the intermediate part telescopic leg body, and a connecting plate member formed by bending a metal plate and provided on the front side of the connecting member body in the depth direction of the intermediate part, wherein the connecting plate member preferably integrally comprises a plate-like portion joined to the front end on the front side in the depth direction of the intermediate part of the connecting member body and having a flat portion facing the front side in the depth direction of the intermediate part, a first beam connecting portion extending from the plate-like portion in the first extending direction to which one end of the first reinforcing beam is connected, and a second beam connecting portion extending from the plate-like portion in the second extending direction to which one end of the second reinforcing beam is connected. According to this embodiment, the connecting plate member, which has a plate-like portion joined to the connecting member body, a first beam connecting portion, and a second beam connecting portion, is formed by bending a metal plate. Therefore, compared to, for example, the case in which the first beam connecting portion and the second beam connecting portion are joined to the connecting member body by welding or the like, the connecting plate member becomes stronger. Consequently, the intermediate leg, the first reinforcing beam, and the second reinforcing beam are firmly connected, making the support structure stronger and enabling stable support of the tabletop.

[0011] (7) In a tabletop lifting type furniture according to any of the embodiments of (1) to (6) above, it is preferable that the dimension of the first end telescopic leg in the first depth direction is smaller than the dimension of the first portion of the tabletop in the first depth direction and is formed in a columnar shape extending in the vertical direction, and the dimension of the second end telescopic leg in the second depth direction is smaller than the dimension of the second portion of the tabletop in the second depth direction and is formed in a columnar shape extending in the vertical direction. According to this embodiment, by forming the first and second end telescopic legs in a columnar shape, the user's lower limbs are less likely to interfere with the first and second end telescopic legs.

[0012] (8) In the tabletop lifting type furniture according to the embodiment of (7) above, it is preferable that the first grounding portion extends from the first end telescopic leg body to the rear and front sides in the first depth direction along the floor surface, and the second grounding portion extends from the second end telescopic leg body to the rear and front sides in the second depth direction along the floor surface. According to this embodiment, since the first and second ground contact portions extend in the first and second depth directions, the first and second end legs can support the tabletop more stably.

[0013] (9) A liftable tabletop furniture according to one aspect of the present invention comprises a tabletop having an upward-facing work surface and a support structure that supports the tabletop from below, wherein the tabletop has a shape in which the intermediate portion of the tabletop located between the ends of the tabletop extends outwards to one side in a second direction that intersects horizontally with respect to a first direction connecting the ends of the tabletop, and the support structure comprises end extension legs provided below each of the ends of the tabletop, which are extendable and retractable in the vertical direction. The table comprises an end leg having a ground contact portion provided at the lower end of the end telescopic leg body that makes contact with the floor surface, and an end leg that supports the end of the tabletop from below at an intermediate position of the end of the tabletop in the depth direction of the end of the tabletop in the horizontal direction, and an intermediate leg having an intermediate ground contact portion provided at the lower end of the intermediate telescopic leg body that makes contact with the floor surface, and an intermediate leg that supports the intermediate part of the tabletop from below at a position further back than the intermediate position of the intermediate part of the tabletop in the depth direction of the intermediate part of the tabletop. According to this embodiment, the end legs support the end of the tabletop from below at an intermediate position in the depth direction, thereby stably supporting both ends of the tabletop. In addition, the intermediate legs support the middle section of the tabletop from below at a position further back than the midpoint of the middle section in the depth direction of the middle section. This allows for stably supporting the middle section of the tabletop, where loads tend to be concentrated towards the back in the depth direction of the middle section. Therefore, the tabletop can be raised and lowered stably. [Effects of the Invention]

[0014] According to one aspect of the present invention, the tabletop can be raised and lowered stably. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view showing a tabletop lifting type furniture according to this embodiment. [Figure 2] This is a view from above of the support structure of the tabletop lifting type furniture according to this embodiment. [Figure 3] This is a perspective view showing the support structure according to this embodiment. [Figure 4]A perspective view showing a connecting member that connects an intermediate leg of a top plate lifting furniture according to the present embodiment, a first reinforcing beam, and a second reinforcing beam. [Figure 5] A plan view showing a top plate lifting furniture in a modification of the present embodiment. [Figure 6] A plan view showing a top plate lifting furniture in a modification of the present embodiment. [Figure 7] A plan view showing a top plate lifting furniture in another modification of the present embodiment.

Mode for Carrying Out the Invention

[0016] Hereinafter, a mode for carrying out a top plate lifting furniture according to the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to only this embodiment.

[0017] (Top plate lifting furniture) FIG. 1 is a perspective view showing a top plate lifting furniture 100 according to the present embodiment. As shown in FIG. 1, the top plate lifting furniture 100 is disposed on the floor surface F of a work space in an office, a public facility, or the like. The top plate lifting furniture 100 includes a top plate 10 and a support structure 20. In the following description, as absolute coordinates, the direction perpendicular to the floor surface F is referred to as the vertical direction Dv, and the two horizontal directions perpendicular to the vertical direction Dv are referred to as the first direction X and the second direction Y, respectively.

[0018] (Top plate) FIG. 2 is a view of the support structure 20 of the top plate lifting furniture 100 according to the present embodiment as viewed from above. The top plate 10 is plate-shaped and extends along a plane that intersects the vertical direction Dv, and has an upward-facing work surface 10f. As shown in Figures 1 and 2, the top plate 10 is formed in an L-shape when viewed from above, for example. In this embodiment, the portion of the top plate 10 that is bent in an L-shape so as to protrude to one side in the second direction Y is defined as the top plate intermediate portion 10C. The L-shaped ends of the top plate 10 are connected to the top plate intermediate portion 10C and constitute the first top plate end 10A and the second top plate end 10B, which face the first direction X. That is, the first direction X is the direction connecting the first top plate end 10A and the second top plate end 10B. The top plate 10 has a shape in which the top plate intermediate portion 10C, located between the first top plate end 10A and the second top plate end 10B, is bent so as to protrude to one side in the second direction Y.

[0019] The tabletop 10 integrally comprises a tabletop middle section 13 and a first tabletop section 11 and a second tabletop section 12 extending from the tabletop middle section 13 in directions intersecting each other. The relative coordinates of the tabletop lifting fixture 100 (tabletop 10) in absolute coordinates are defined as follows: The direction in which the first tabletop section 11 extends horizontally is called the first extension direction D1, and the direction in which the second tabletop section 12 extends horizontally is called the second extension direction D2. In the first tabletop section 11, the direction intersecting the first extension direction D1 horizontally is called the first depth direction (end depth direction) D1a, and in the second tabletop section 12, the direction intersecting the second extension direction D2 horizontally is called the second depth direction (end depth direction) D2a. Furthermore, the extension direction L of the tabletop is defined as the direction in which the entire L-shaped tabletop 10 extends, along a line (first imaginary line V1) that passes through the center of the first depth direction D1a in the first portion 11 of the tabletop and extends in the first extension direction D1, and a line (second imaginary line V2) that passes through the center of the second depth direction D2a in the second portion 12 of the tabletop and extends in the second extension direction D2. In the illustrated example, the first extension direction D1, the first depth direction D1a, the second extension direction D2, and the second depth direction D2a intersect with respect to the first direction X and the second direction Y, respectively.

[0020] The first portion 11 of the tabletop is located on one side in the first direction X relative to the middle portion 13 of the tabletop. The first portion 11 of the tabletop constitutes one end of the tabletop 10 in the tabletop extension direction L. The first portion 11 of the tabletop extends from the middle portion 13 of the tabletop in the first extension direction D1. The first portion 11 of the tabletop is a rectangular region of the tabletop 10 with the first extension direction D1 as the longitudinal direction and the first depth direction D1a as the transverse direction. One end of the first portion 11 of the tabletop in the first extension direction D1 includes a first tabletop end 10A that is supported from below by the first end leg 21, which will be described later. The other end of the first portion 11 of the tabletop in the first extension direction D1 is connected to the middle portion 13 of the tabletop.

[0021] The second portion 12 of the top plate is located on the other side of the first direction X relative to the middle portion 13 of the top plate. The second portion 12 of the top plate constitutes the other end of the top plate 10 in the top plate extending direction L. The second portion 12 of the top plate extends from the middle portion 13 of the top plate in the second extending direction D2. In this embodiment, the angle between the first extending direction D1, in which the first portion 11 of the top plate extends, and the second extending direction D2, in which the second portion 12 of the top plate extends, is, for example, 90°. The second portion 12 of the top plate is a rectangular region of the top plate 10, with the second extending direction D2 as the longitudinal direction and the second depth direction D2a as the transverse direction. In this embodiment, the second portion 12 of the top plate is perpendicular to the first portion 11 of the top plate. One end of the second portion 12 of the top plate in the second extending direction D2 includes a second top plate end 10B that is supported from below by a second end leg 22, which will be described later. The other end of the second portion 12 of the top plate in the second extending direction D2 is connected to the middle portion 13 of the top plate.

[0022] In this embodiment, the first portion 11 and the second portion 12 of the top plate are formed symmetrically (line symmetrically) with respect to a line extending in the second direction Y, for example. That is, the length of the first portion 11 of the top plate in the first extending direction D1 is the same as the length of the second portion 12 of the top plate in the second extending direction D2. The depth dimension of the first portion 11 of the top plate in the first depth direction D1a is the same as the depth dimension of the second portion 12 of the top plate in the second depth direction D2a. Note that the length of the first portion 11 of the top plate in the first extending direction D1 and the length of the second portion 12 of the top plate in the second extending direction D2 may be different. The depth dimension of the first portion 12 of the top plate in the first depth direction D1a and the depth dimension of the second portion 12 of the top plate in the second depth direction D2a may be different.

[0023] The middle portion 13 of the top plate connects the first portion 11 and the second portion 12 of the top plate. The middle portion 13 of the top plate constitutes the central part of the top plate 10 in the direction of extension L of the top plate. In this embodiment, the middle portion 13 of the top plate is a square-shaped region located at the bent portion of the top plate 10. The intersection point Vj of the first virtual line V1 and the second virtual line V2 is positioned to overlap with the middle portion 13 of the top plate when viewed from above. Note that in the L-shaped top plate 10 when viewed from above, the first portion 11, the second portion 12, and the middle portion 13 of the top plate are not clearly separated. The division positions between the first portion 11 and the middle portion 13 of the top plate, and between the second portion 12 and the middle portion 13 of the top plate, shown by dashed lines in Figures 1 and 2 are merely examples.

[0024] The first portion 11 of the top plate has a first rear edge 11r located on the rear side in the first depth direction D1a, a first front edge 11f located on the front side in the first depth direction D1a, and a first side edge 11s. In this embodiment, the first rear edge 11r and the first front edge 11f are parallel to each other and extend in the first extending direction D1. The first side edge 11s extends in the first depth direction D1a at one edge of the first portion 11 of the top plate in the first extending direction D1, and connects the first rear edge 11r and the first front edge 11f.

[0025] The second portion 12 of the top plate has a second rear edge 12r located on the rear side in the second depth direction D2a, a second front edge 12f located on the front side in the second depth direction D2a, and a second side edge 12s. In this embodiment, the second rear edge 12r and the second front edge 12f are parallel to each other and extend in the second extension direction D2. The second side edge 12s extends in the second depth direction D2a at one edge of the second portion 12 of the top plate in the second extension direction D2, and connects the second rear edge 12r and the second front edge 12f. The first rear edge 11r and the second rear edge 12r are adjacent edges on the superior angle side of the angle formed by the first portion 11 of the top plate (first virtual line V1) and the second portion 12 of the top plate (second virtual line V2). On the other hand, the first front edge 11f and the second front edge 12f are adjacent edges on the less favorable side of the angle formed by the first part 11 of the top plate (first imaginary line V1) and the second part 12 of the top plate (second imaginary line V2).

[0026] The middle section 13 of the top plate includes a middle rear edge 13r connecting the first rear edge 11r and the second rear edge 12r, and a middle front edge 13f connecting the first front edge 11f and the second front edge 12f. The middle rear edge 13r includes a first middle rear edge 13r1 extending in the first extending direction D1, and a second middle rear edge 13r2 extending in the second extending direction D2. The middle rear edge 13r is bent in an L-shape so as to protrude to one side in the second direction Y, when the first middle rear edge 13r1 and the second middle rear edge 13r2 are connected to each other in the central part of the top plate 10 in the first direction X and on one side in the second direction Y (middle section depth direction D3a). The depth direction D3a of the intermediate section is the direction in which the intermediate section 13 of the top plate extends outward relative to the first section 11 and the second section 12 of the top plate in the horizontal direction, and in this embodiment it coincides with the second direction Y.

[0027] The first intermediate rear edge 13r1 extends continuously with the first rear edge 11r. Therefore, the first intermediate rear edge 13r1 and the first rear edge 11r constitute the first outer edge 10e1 of the top plate 10, which extends linearly in the first extending direction D1 at the rear of the first depth direction D1a. The second intermediate rear edge 13r2 extends continuously to the second rear edge 12r. Therefore, the second intermediate rear edge 13r2 and the second rear edge 12r constitute the second outer edge 10e2 of the top plate 10, which extends linearly in the second extending direction D2 at the rear of the second depth direction D2a.

[0028] In the illustrated example, the boundary between the first outer edge 10e1 (first intermediate rear edge 13r1) and the second outer edge 10e2 (second intermediate rear edge 13r2) is located in the center of the top plate 10 in the first direction X. Furthermore, the aforementioned intersection point Vj is located in the center of the top plate intermediate portion 13 in both the first direction X and the second direction Y. However, the position of the intersection point Vj with respect to the middle portion 13 of the top plate can be appropriately changed according to the length of the first portion 11 of the top plate in the first extending direction D1 and the length of the second portion 12 of the top plate in the second extending direction D2, the depth dimension of the first portion 1 of the top plate in the first depth direction D1a and the depth dimension of the second portion 12 of the top plate in the second depth direction D2a.

[0029] The intermediate front edge 13f is formed in a convex arc shape on one side in the second direction Y (intermediate depth direction D3a). The intermediate front edge 13f continuously connects the first front edge 11f and the second front edge 12f. In this embodiment, "continuous" means without steps or corners.

[0030] (Support structure) Figure 3 is a perspective view showing the support structure 20 according to this embodiment. As shown in Figure 1, the support structure 20 supports the tabletop 10 from below. The support structure 20 is placed on the floor surface F at the location where the tabletop liftable furniture 100 is installed. As shown in Figures 2 and 3, the support structure 20 comprises a first end leg (end leg) 21, a second end leg (end leg) 22, an intermediate leg 23, a first reinforcing beam 41, a second reinforcing beam 42, and a connecting member 30. The tabletop liftable furniture 100 is a tabletop liftable desk in which the tabletop 10 can be raised and lowered. For this reason, the first end leg 21, the second end leg 22, and the intermediate leg 23 are configured to be extendable and retractable in the vertical direction Dv.

[0031] The first top plate end 10A and the second top plate end 10B are spaced apart in the first direction X. In other words, in this embodiment, the first direction X is the direction connecting the first top plate end 10A and the second top plate end 10B when viewed from above. The first end leg 21 supports the first portion of the tabletop 11 from below at an intermediate position in the first depth direction D1a. The first end leg 21 is positioned below the first end portion 10A of the tabletop 11. As shown in Figures 1 and 3, the first end leg 21 has a first end telescopic leg body (end telescopic leg body) 24 and a first ground contact portion (ground contact portion) 25.

[0032] The first end telescopic leg 24 extends downward from the underside of the tabletop 10. As shown in Figure 1, the dimension W1 of the first end telescopic leg 24 in the first depth direction D1a is smaller than the dimension W2 of the first part 11 of the tabletop in the first depth direction D1a, and it is formed in a columnar shape extending in the vertical direction Dv. In this embodiment, the first end telescopic leg 24 is positioned at an intermediate position in the first depth direction D1a below the first end 10A of the tabletop 10. Preferably, the first end telescopic leg 24 coincides with the center of the first depth direction D1a of the first portion 11 of the tabletop 11 (position of the first imaginary line V1) when viewed from above. However, as long as the first end telescopic leg 24 coincides with the center of the first depth direction D1a of the first portion 11 of the tabletop 11 when viewed from above, the center of the first end telescopic leg 24 does not have to coincide with the center of the first depth direction D1a of the first portion 11 of the tabletop 11 when viewed from above.

[0033] As shown in Figure 3, the first end telescopic leg 24 has a plurality of cylindrical sections 24a and 24b. In this embodiment, the plurality of cylindrical sections 24a and 24b are rectangular tubes. The cylindrical section 24b is inserted into the interior of the cylindrical section 24a. The cylindrical section 24b is movable relative to the cylindrical section 24a in the vertical direction Dv. The number of cylindrical sections constituting the first end telescopic leg 24 is not particularly limited, as long as there are two or more. The first end telescopic leg 24 is driven to extend and retract in the vertical direction Dv by a power unit 24d. The power unit 24d is provided above the first end telescopic leg 24 on the lower surface of the top plate 10. The power unit 24d extends and retracts the first end telescopic leg 24 in the vertical direction Dv by moving the plurality of cylindrical sections 24a and 24b in the first end telescopic leg 24 relative to each other in the vertical direction Dv using a motor (not shown).

[0034] The upper end of the first end telescopic leg body 24 is provided with a first rod 24p that extends in the first depth direction D1a along the lower surface of the top plate 10 (first portion 11 of the top plate). The first rod 24p is joined to the lower surface of the top plate 10 by bolts or the like (not shown).

[0035] The first ground contact portion 25 is provided at the lower end of the first end telescopic leg 24 and makes contact with the floor surface F. In this embodiment, the first ground contact portion 25 extends from the lower end of the first end telescopic leg 24 to the front and rear sides in the first depth direction D1a. In the illustrated example, the first end telescopic leg 24 extends upward from the center of the first ground contact portion 25 in the first depth direction D1a. An adjuster 25f for adjusting for unevenness in the floor surface F is provided on the lower surface of the first ground contact portion 25.

[0036] As shown in Figures 1 to 3, the second end leg 22 supports the second portion 12 of the tabletop from below at an intermediate position in the second depth direction D2a. The second end leg 22 is positioned below the second end 10B of the second portion 12 of the tabletop. As shown in Figures 1 and 3, the second end leg 22 has a second end telescopic leg body (end telescopic leg body) 26 and a second ground contact portion (ground contact portion) 27.

[0037] The second end telescopic leg 26 extends downward from the underside of the top plate 10. The dimension W1 of the second end telescopic leg 26 in the second depth direction D2a is smaller than the dimension W2 of the second depth direction D2a of the second part 12 of the top plate (see Figure 1), and it is formed in a columnar shape extending in the vertical direction Dv. The second end extendable leg 26 is positioned at an intermediate position in the second depth direction D2a on the underside of the second end 10B of the tabletop 10. Preferably, the second end extendable leg 26 coincides with the center of the second depth direction D2a of the second part 12 of the tabletop when viewed from above (the position of the second imaginary line V2) at the point where the second end extendable leg 26 is located. However, as long as the second end extendable leg 26 coincides with the center of the second depth direction D2a of the second part 12 of the tabletop when viewed from above, the center of the second end extendable leg 26 does not have to coincide with the center of the second depth direction D2a of the second part 12 of the tabletop when viewed from above.

[0038] As shown in Figure 3, the second end telescopic leg 26 has a plurality of cylindrical sections 26a and 26b. In this embodiment, the plurality of cylindrical sections 26a and 26b are rectangular tubes. The cylindrical section 26b is inserted into the interior of the cylindrical section 26a. The cylindrical section 26b is movable relative to the cylindrical section 26a in the vertical direction Dv. The number of cylindrical sections constituting the second end telescopic leg 26 is not particularly limited, as long as there are two or more. The second end telescopic leg 26 is driven to extend and retract in the vertical direction Dv by a power unit 26d. The power unit 26d is provided above the second end telescopic leg 26 on the lower surface of the top plate 10. The power unit 26d extends and retracts the second end telescopic leg 26 in the vertical direction Dv by moving the plurality of cylindrical sections 26a and 26b in the second end telescopic leg 26 relative to each other in the vertical direction Dv using a motor (not shown).

[0039] The upper end of the second end telescopic leg body 26 is provided with a second rod 26p that extends in the second depth direction D2a along the lower surface of the top plate 10 (second part 12 of the top plate). The second rod 26p is joined to the lower surface of the top plate 10 by bolts or the like (not shown).

[0040] The second ground contact portion 27 is provided at the lower end of the second end telescopic leg 26 and makes contact with the floor surface F. In this embodiment, the second ground contact portion 27 extends from the lower end of the second end telescopic leg 26 to the front and rear sides in the second depth direction D2a. In the illustrated example, the second end telescopic leg 26 extends upward from the center of the second ground contact portion 27 in the second depth direction D2a. An adjuster 27f for adjusting for unevenness in the floor surface F is provided on the lower surface of the second ground contact portion 27.

[0041] As shown in Figure 2, the intermediate leg 23 is positioned below the intermediate portion 10C of the tabletop 10. As shown in Figure 3, the intermediate leg 23 has an intermediate telescopic leg body 28 and an intermediate ground contact portion 29. The intermediate telescopic leg 28 extends downward from the underside of the tabletop 10. The intermediate telescopic leg 28 supports the intermediate portion 13 of the tabletop from below at a point located on one side (towards the back) of the intermediate position (center) M in the second direction Y (intermediate depth direction D3a) of the intermediate portion 13 of the tabletop where the intermediate telescopic leg 28 is located. The intermediate telescopic leg 28 is positioned away from the intersection point Vj of the first virtual line V1 and the second virtual line V2, on one side (towards the back) of the second direction Y (intermediate depth direction D3a). In the illustrated example, the intermediate telescopic leg 28 is positioned so as viewed from above that it coincides with the line connecting the vertex 13p of the boundary portion of the first intermediate rear edge 13r1 and the second intermediate rear edge 13r2 and the intersection point Vj, and in the second direction Y (intermediate depth direction D3a), it is located between the vertex 13p of the boundary portion of the boundary portion of the first intermediate rear edge 13r1 and the second intermediate rear edge 13r2 and the intersection point Vj.

[0042] Figure 4 is a perspective view showing a connecting member 30 that connects the intermediate leg 23, the first reinforcing beam 41, and the second reinforcing beam 42 of the tabletop lifting type furniture unit 100 according to this embodiment. As shown in Figures 3 and 4, the intermediate telescopic leg 28 has a plurality of cylindrical sections 28a and 28b. In this embodiment, the plurality of cylindrical sections 28a and 28b are rectangular tubes. The cylindrical section 28b is inserted into the interior of the cylindrical section 28a. The cylindrical section 28b is movable relative to the cylindrical section 28a in the vertical direction Dv. The number of cylindrical sections constituting the intermediate telescopic leg 28 is not particularly limited, as long as there are two or more. The intermediate telescopic leg 28 is driven to extend and retract in the vertical direction Dv by the power unit 28d. The power unit 28d extends and retracts the intermediate telescopic leg 28 in the vertical direction Dv by moving the plurality of cylindrical sections 28a and 28b in the intermediate telescopic leg 28 relative to each other in the vertical direction Dv using a motor (not shown).

[0043] The intermediate ground contact portion 29 is provided at the lower end of the intermediate telescopic leg 28 and makes contact with the floor surface F. In this embodiment, the intermediate ground contact portion 29 is an adjuster for adjusting for unevenness in the floor surface F.

[0044] A connecting member 30 is connected to the upper end of the intermediate telescopic leg 28. The connecting member 30 connects the upper end of the intermediate telescopic leg 28 to the first reinforcing beam 41 and the second reinforcing beam 42. The connecting member 30 comprises a connecting member body 31 and a connecting plate member 32.

[0045] The connecting member body 31 is cylindrical or hollow box-shaped, extending in the second direction Y (intermediate section depth direction D3a) along the lower surface of the intermediate section 13 of the top plate, and the power unit 28d is housed inside it. One end of the connecting member body 31 in the second direction Y (intermediate section depth direction D3a) is joined to the upper end of the intermediate section telescopic leg 28 by bolting, welding, or the like. The other end of the connecting member body 31 in the second direction Y (intermediate section depth direction D3a) extends to a position that coincides with the intersection Vj when viewed from above; however, the other end of the connecting member body 31 in the second direction Y (intermediate section depth direction D3a) may be located on one side of the intersection Vj in the second direction Y (intermediate section depth direction D3a).

[0046] As shown in Figure 4, the connecting plate member 32 is formed by bending a metal plate and is provided at the other end of the connecting member body 31 in the second direction Y (intermediate depth direction D3a). The connecting plate member 32 integrally includes a plate-shaped portion 32p, a first beam connecting portion 32j, and a second beam connecting portion 32k.

[0047] The plate-like portion 32p has a flat portion 32f facing the other side in the second direction Y (intermediate depth direction D3a). The plate-like portion 32p is joined to the other end of the connecting member body 31 in the second direction Y (intermediate depth direction D3a) by bolting, welding, or the like.

[0048] The first beam connection portion 32j and the second beam connection portion 32k are provided on both sides of the plate-shaped portion 32p in the first direction X. The first beam connection portion 32j extends from the plate-like portion 32p to one side in the first extending direction D1. The first beam connection portion 32j is formed in an inverted J shape when viewed from the first extending direction D1, for example.

[0049] The second beam connection portion 32k extends from the plate-like portion 32p to one side in the second extending direction D2. The second beam connection portion 32k is formed in an inverted J shape when viewed from the second extending direction D2, for example.

[0050] As shown in Figures 2 and 3, the first reinforcing beam 41 extends in the first extension direction D1 along the lower surfaces of the first portion 11 and the intermediate portion 13 of the top plate, straddling the space between the first portion 11 and the intermediate portion 13 of the top plate. In the illustrated example, the first reinforcing beam 41 is located on the far side of the first depth direction D1a with respect to the first imaginary line V1. However, the first reinforcing beam 41 may be located on the first imaginary line V1, or on the near side of the first depth direction D1a with respect to the first imaginary line V1.

[0051] The first reinforcing beam 41 connects the upper end of the first end extendable leg body 24 of the first end leg 21 to the connecting member 30. In other words, the first reinforcing beam 41 is connected to the intermediate leg 23 via the connecting member 30. The first reinforcing beam 41 is made of metal and consists of a beam material having a cross-sectional shape such as a J-shape or a U-shape when viewed from the first extending direction D1.

[0052] One end of the first reinforcing beam 41 is fitted into the first beam connection part 32j and joined to the first beam connection part 32j by bolts or welding. The other end of the first reinforcing beam 41 is joined to the upper end of the first end telescopic leg 24 from the rear side in the first depth direction D1a by bolts or welding (not shown).

[0053] As shown in Figures 2 and 3, the second reinforcing beam 42 extends in the second extension direction D2 along the lower surfaces of the second portion 12 and the intermediate portion 13 of the top plate, straddling the space between the second portion 12 and the intermediate portion 13 of the top plate. In the illustrated example, the second reinforcing beam 42 is located on the far side of the second depth direction D2a with respect to the second imaginary line V2. However, the second reinforcing beam 42 may also be located on the second imaginary line V2, or on the near side of the second depth direction D2a with respect to the second imaginary line V2.

[0054] The second reinforcing beam 42 connects the upper end of the second end extendable leg body 26 of the second end leg 22 to the connecting member 30. In other words, the second reinforcing beam 42 is connected to the intermediate leg 23 via the connecting member 30. The second reinforcing beam 42 is made of metal and consists of a beam material having a cross-sectional shape such as a J-shape or a U-shape when viewed from the second extending direction D2.

[0055] One end of the second reinforcing beam 42 is fitted into the second beam connection part 32k and joined to the second beam connection part 32k by bolts or welding. The other end of the second reinforcing beam 42 is joined to the upper end of the second end telescopic leg 26 from the rear side in the second depth direction D2a by bolts or welding (not shown).

[0056] In such a tabletop-lifting type furniture unit 100, when a user operates a switch 95 (see Figure 1) attached to a predetermined position on the tabletop 10, for example, the first end leg 21, the second end leg 22, and the intermediate leg 23 extend and retract in synchronously, causing the tabletop 10 to rise or fall.

[0057] Thus, in this embodiment, the tabletop lifting type furniture 100 comprises a tabletop 10 having an upward-facing work surface 10f, and a support structure 20 that supports the tabletop 10 from below. The tabletop 10 comprises a first tabletop portion 11 located at one end in the tabletop extending direction L and extending horizontally in a first extending direction D1, a second tabletop portion 12 located at the other end in the tabletop extending direction L and extending horizontally in a second extending direction D2, and an intermediate tabletop portion 13 connecting the first tabletop portion 11 and the second tabletop portion 12. The support structure 20 has a first end telescopic leg 24 that can extend and retract in the vertical direction Dv, and a first ground contact portion 25 provided at the lower end of the first end telescopic leg 24 that contacts the floor surface F, and a first depth direction D1 that intersects the first extending direction D1 in the horizontal direction. The configuration includes a first end leg 21 that supports the first portion 11 of the top plate from below at an intermediate position of the first portion 11 of the top plate in a, a second end telescopic leg body 26 that can extend and retract in the vertical direction Dv, and a second ground contact portion 27 provided at the lower end of the second end telescopic leg body 26 and in contact with the floor surface F, and a second end leg 22 that supports the second portion 12 of the top plate from below at an intermediate position of the second portion 12 of the top plate in the second depth direction D2a that intersects the second extension direction D2 in the horizontal direction, and an intermediate leg 23 that supports the intermediate portion 13 of the top plate from below at a position further back than the intermediate position M of the intermediate portion 13 of the top plate in the intermediate depth direction D3a. In this configuration, the first end leg 21 supports the first portion 11 of the tabletop from below at an intermediate position in the first depth direction D1a, and the second end leg 22 supports the second portion 12 of the tabletop from below at an intermediate position in the second depth direction D2a. Therefore, both ends of the tabletop 10 can be stably supported by the first end leg 21 and the second end leg 22. In addition, the intermediate leg 23 supports the intermediate portion 13 of the tabletop from below at a position further back than the intermediate position M of the intermediate portion 13 in the intermediate depth direction D3a. The intermediate portion 13 of the tabletop is prone to loads being applied to the rear side in the intermediate depth direction D3a relative to the portion of the first portion 11 supported by the first end leg 21 and the portion of the second portion 12 supported by the second end leg 22. In contrast, the intermediate leg 23 supports the intermediate portion 13 of the tabletop from below at a position further back than the intermediate position M in the depth direction D3a of the intermediate portion, thereby stably supporting the intermediate portion 13 of the tabletop. Therefore, even when raising or lowering the tabletop 10 by extending or retracting the first end leg 21, the second end leg 22, and the intermediate leg 23, the raising and lowering of the tabletop 10 can be performed stably. Furthermore, since the intermediate leg 23 is located further back than the intermediate position M of the intermediate portion 13 of the tabletop, when a user uses the tabletop lifting type furniture 100 from the front side of the tabletop 10, the user's lower limbs are less likely to interfere with the intermediate leg 23.

[0058] In this embodiment, the intersection point Vj of the first imaginary line V1, which passes through the center of the first depth direction D1a in the first portion 11 of the top plate and extends in the first extension direction D1, and the second imaginary line V2, which passes through the center of the second depth direction D2a in the second portion 12 of the top plate and extends in the second extension direction D2, is positioned so as to overlap with the middle portion 13 of the top plate when viewed from above, and the middle leg 23 is positioned further back than the intersection point Vj in the depth direction D3a of the middle portion. With this configuration, the intermediate leg 23 is positioned towards the rear in the depth direction D3a of the intermediate section at the intersection Vj of the first virtual line V1 and the second virtual line V2, which are positioned to overlap with the intermediate section 13 of the tabletop. This allows for stable support of the intermediate section 13 of the tabletop, which is prone to loads.

[0059] In this embodiment, the tabletop lifting type furniture 100 further comprises a first reinforcing beam 41 that extends in a first extending direction D1 along the lower surface of the first portion 11 of the tabletop and is connected to the upper end of the first end telescopic leg 24 and the upper end of the intermediate telescopic leg 28, and a second reinforcing beam 42 that extends in a second extending direction D2 along the lower surface of the second portion 12 of the tabletop and is connected to the upper end of the second end telescopic leg 26 and the upper end of the intermediate telescopic leg 28. This configuration includes a first reinforcing beam 41 connecting the upper end of the first end telescopic leg 24 and the upper end of the intermediate telescopic leg 28, and a second reinforcing beam 42 connecting the upper end of the second end telescopic leg 26 and the upper end of the intermediate telescopic leg 28. This makes the support structure 20 more robust and allows for stable support of the top plate 10.

[0060] In this embodiment, the first reinforcing beam 41 is positioned on the rear side in the first depth direction D1a relative to the upper end of the first end telescopic leg 24, and the second reinforcing beam 42 is positioned on the rear side in the second depth direction D2a relative to the upper end of the second end telescopic leg 26. With this configuration, the first reinforcing beam 41 and the second reinforcing beam 42 can be positioned further back in the first depth direction D1a and the second depth direction D2a. This makes it less likely for the user's lower limbs, drawers provided on the underside of the tabletop 10, chairs or cabinets stored on the underside of the tabletop 10, etc., to interfere with the first reinforcing beam 41 and the second reinforcing beam 42.

[0061] In this embodiment, it is preferable that the device further includes a connecting member 30 that extends in the intermediate depth direction D3a along the lower surface of the intermediate portion 13 of the top plate and connects one end of the first reinforcing beam 41, one end of the second reinforcing beam 42, and the upper end of the intermediate telescopic leg 28. According to this embodiment, by connecting one end of the first reinforcing beam 41 and one end of the second reinforcing beam 42 with the upper end of the intermediate telescopic leg 28 via a connecting member 30 extending in the intermediate depth direction D3a, the intermediate leg 23 can be positioned further back in the intermediate depth direction D3a. This allows for more stable support of the intermediate portion 13 of the tabletop, which is prone to loads. Furthermore, since the first reinforcing beam 41 and the second reinforcing beam 42 are positioned towards the rear in the first depth direction D1a and the second depth direction D2a relative to the first end telescopic leg 24 and the second end telescopic leg 26, the length of the connecting member 30 in the intermediate depth direction D3a can be shortened. This suppresses the reduction in strength that would otherwise occur due to the presence of the connecting member 30.

[0062] In this embodiment, the connecting member 30 comprises a connecting member body 31 whose rear end on the rear side in the intermediate depth direction D3a is connected to the upper end of the intermediate telescopic leg 28, and a connecting plate member 32 formed by bending a metal plate and provided on the front side of the connecting member body 31 in the intermediate depth direction D3a. The connecting plate member 32 is joined to the front end on the front side of the intermediate depth direction D3a of the connecting member body 31 and has a plate-like portion 32p having a flat portion facing the front side in the intermediate depth direction D3a, a first beam connecting portion 32j extending from the plate-like portion 32p in the first extending direction D1 to which one end of the first reinforcing beam 41 is connected, and a second beam connecting portion 32k extending from the plate-like portion 32p in the second extending direction D2 to which one end of the second reinforcing beam 42 is connected. In this configuration, the connecting plate member 32, which has a plate-shaped portion 32p joined to the connecting member body 31, a first beam connecting portion 32j, and a second beam connecting portion 32k, is formed by bending a metal plate. Therefore, compared to, for example, the case where the first beam connecting portion 32j and the second beam connecting portion 32k are joined to the connecting member body 31 by welding or the like, the connecting plate member 32 becomes stronger. Consequently, the intermediate leg 23, the first reinforcing beam 41, and the second reinforcing beam 42 are firmly connected, making the support structure 20 stronger and enabling stable support of the top plate 10.

[0063] In this embodiment, the dimension of the first end telescopic leg 24 in the first depth direction D1a is smaller than the dimension of the first part of the top plate 11 in the first depth direction D1a, and it is formed in a columnar shape extending in the vertical direction Dv. The dimension of the second end telescopic leg 26 in the second depth direction D2a is smaller than the dimension of the second part of the top plate 12 in the second depth direction D2a, and it is formed in a columnar shape extending in the vertical direction Dv. With this configuration, by forming the first end telescopic leg 24 and the second end telescopic leg 26 in a columnar shape, the user's lower limbs are less likely to interfere with the first end telescopic leg 24 and the second end telescopic leg 26.

[0064] In this embodiment, the first ground contact portion 25 extends from the first end telescopic leg 24 to the rear and front sides in the first depth direction D1a along the floor surface F, and the second ground contact portion 27 extends from the second end telescopic leg 26 to the rear and front sides in the second depth direction D2a along the floor surface F. With this configuration, since the first contact point 25 and the second contact point 27 extend in the first depth direction D1a and the second depth direction D2a, the first end leg 21 and the second end leg 22 can support the top plate 10 more stably.

[0065] In this embodiment, the tabletop lifting type furniture 100 comprises a tabletop 10 having an upward-facing work surface 10f, and a support structure 20 that supports the tabletop 10 from below. The tabletop 10 has a shape in which the intermediate portion 10C located between the first and second tabletop ends 10A and 10B on both sides in the extending direction of the tabletop 10 is bent or curved so as to extend outwards to one side of the second direction Y that intersects the first direction X connecting the first and second tabletop ends 10B in the horizontal direction. The support structure 20 is provided below each of the first and second tabletop ends 10A and 10B, and includes a first end telescopic leg 24, a second end telescopic leg 26, and a first end telescopic leg 24 that are extendable in the vertical direction Dv. The structure includes a first end leg 21 and a second end leg 22 that support the first and second top plate ends 10A and 10B from below at an intermediate position between the first and second top plate ends 10A and 10B in the first and second depth directions D1a and D2a of the first and second top plate ends 10B in the horizontal direction, and an intermediate leg 28 that is extendable in the vertical direction Dv, and an intermediate leg 23 that supports the intermediate top plate end 10C from below at an intermediate position behind the intermediate position M of the intermediate top plate end 10C in the intermediate depth direction D3a of the intermediate top plate end 10C. With this configuration, the first end legs 21 and the second end legs 22 support the first and second end 10A and second end 10B of the top plate from below at an intermediate position between them in the intermediate depth direction D3a, thereby stably supporting both ends of the top plate 10 with the first and second end legs 21 and 22. In addition, the intermediate leg 23 supports the intermediate part 10C of the top plate from below at a position further back than the intermediate position M of the intermediate part 10C in the intermediate depth direction D3a. This allows for stable support of the intermediate part 13 of the top plate, where loads tend to be concentrated towards the back in the intermediate depth direction D3a. Therefore, even when raising or lowering the top plate 10, the raising and lowering of the top plate 10 can be performed stably.

[0066] (Modified version of the embodiment) In the above embodiment, the planar shape of the top plate 10 is L-shaped in plan view, where the first extending direction D1 of the first portion 11 of the top plate and the second extending direction D2 of the second portion 12 of the top plate are perpendicular to each other, but the embodiment is not limited to this. The angle between the first extending direction D1 of the first portion 11 of the top plate and the second extending direction D2 of the second portion 12 of the top plate may be less than 90° or 90° or more. Figure 5 is a plan view showing a modified example of this embodiment of a tabletop lifting type furniture unit 100. For example, the tabletop 10 shown in Figure 5 has an obtuse angle of 90° or more between the first extending direction D1 of the first portion 11 of the tabletop and the second extending direction D2 of the second portion 12 of the tabletop, and the planar shape of the tabletop 10 is V-shaped.

[0067] Figure 6 is a plan view showing a modified example of this embodiment of a tabletop lifting type furniture unit 100. Furthermore, as shown in Figure 6, for example, the top plate 10 may be approximately inverted U-shape, having two intermediate top plate portions 10D and 10E between the first top plate end 10A and the second top plate end 10B. In this case, the first extending direction D1 in which the first top plate portion 11 of the top plate 10 extends and the second extending direction D2 in which the second top plate portion 12 extends are parallel (same direction). The first end leg 21 is positioned at the midpoint of the first end of the top plate 10A in the first depth direction D1a. The second end leg 22 is positioned at the midpoint of the second end of the top plate 10B in the second depth direction D2a. In each of the intermediate sections 10D and 10E of the tabletop located in the intermediate section 13 of the tabletop that connects the first section 11 and the second section 12 of the tabletop, the intermediate leg 23 is positioned further back than the midpoint in the depth direction D3a of the intermediate sections 10D and 10E in the section where the intermediate leg 23 is provided.

[0068] Figure 7 is a plan view showing a liftable tabletop furniture unit 100 in another modified example of this embodiment. Furthermore, as shown in Figure 7, for example, the tabletop 10 may be curved such that the middle section 10F of the tabletop protrudes to one side in the second direction Y with respect to the first direction X connecting the first tabletop end 10A and the second tabletop end 10B, and the overall shape is formed in an arc. In this case, the intermediate leg 23 is positioned further back than the midpoint in the depth direction D3a of the middle section 10F of the tabletop in the portion where the intermediate leg 23 is provided.

[0069] (Other embodiments) While preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other modifications are possible without departing from the spirit of the invention. The present invention is not limited by the above description, but only by the appended claims. For example, in the above embodiment, the first rear edge 11r and the first front edge 11f, and the second rear edge 12r and the second front edge 12f are parallel to each other, but the embodiment is not limited to this, and the first rear edge 11r and the first front edge 11f do not have to be parallel to each other.

[0070] In the above embodiment, the first side edge 11s and the second side edge 12s are configured to extend in a straight line, but the embodiment is not limited to this. The first side edge 11s and the second side edge 12s may also be arc-shaped, extending outwards to one side in the first extending direction D1 and the second extending direction D2.

[0071] In the above embodiment, the intermediate rear edge 13r is bent in a V-shape so as to protrude to the rear in the depth direction D3a of the intermediate part when viewed from above, but it may also be curved in an arc shape. In the above embodiment, the intermediate front edge 13f is curved in an arc shape so as to be recessed towards the back in the depth direction D3a of the intermediate part when viewed from above, but it may also be bent in a V-shape or an L-shape.

[0072] In the above embodiment, the first grounding portion 25 and the second grounding portion 27 extend toward the front and rear sides of the first depth direction D1a and the second depth direction D2a, respectively, but are not limited to this. The first grounding portion 25 and the second grounding portion 27 may also be adjusters provided at the lower ends of the first end telescopic leg 24 and the second end telescopic leg 26.

[0073] In the above embodiment, the first reinforcing beam 41 and the second reinforcing beam 42 are connected to the intermediate leg 23 via the connecting member 30, but the embodiment is not limited to this. The first reinforcing beam 41 and the second reinforcing beam 42 may be connected directly to the intermediate leg 23 without the connecting member 30. [Explanation of Symbols]

[0074] 10... Tabletop 10A...First edge of the top panel (edge ​​of the top panel) 10B…Second top plate end (top plate end) 10C~10F...Middle section of the top panel 10f...Work surface 11…First part of the tabletop 12... Second part of the tabletop 13…Middle section of the top panel M…Middle position 20...Support structure 21...First end leg (end leg) 22...Second end leg (end leg) 23…Intermediate Leg 24...First end telescopic leg body (end telescopic leg body) 25...First grounding part (grounding part) 26…Second end telescopic leg body (end telescopic leg body) 27…Second grounding part (grounding part) 28…Middle part telescopic leg body 29...Intermediate ground contact section 30…Connecting member 31…Connecting component body 32…Connecting plate component 32f…Plane part 32j...First beam connection section 32k...Second beam connection point 32p...Plate-like part 41...First reinforcement beam 42...Second reinforcement beam 100... Height-adjustable display unit

Claims

1. A tabletop with an upward-facing work surface, The system comprises a support structure that supports the top plate from below, The aforementioned top plate is A first portion of the tabletop is located at one end in the direction of extension of the tabletop and extends horizontally in the first extension direction, A second portion of the tabletop is located at the other end in the direction of extension of the tabletop and extends horizontally in the second extension direction, It comprises a top plate intermediate portion connecting the first top plate portion and the second top plate portion, The aforementioned support structure is The first end leg has a first end extendable leg body that is extendable in the vertical direction, and a first ground contact portion provided at the lower end of the first end extendable leg body that makes contact with the floor surface, and the first end leg supports the first portion of the top plate from below at an intermediate position of the first portion of the top plate in the first depth direction that intersects the first extension direction in the horizontal direction, The second end leg has a second end extendable leg that is extendable in the vertical direction, and a second ground contact portion provided at the lower end of the second end extendable leg that makes contact with the floor surface, and the second end leg supports the second portion of the top plate from below at an intermediate position of the second portion of the top plate in the second depth direction that intersects the second extension direction in the horizontal direction, The system includes an intermediate telescopic leg body that is extendable in the vertical direction, and an intermediate contact portion provided at the lower end of the intermediate telescopic leg body that makes contact with the floor surface, and an intermediate leg that supports the intermediate portion of the top plate from below at a position further back than the midpoint of the intermediate portion of the top plate in the depth direction of the intermediate section. A display unit with a height-adjustable tabletop.

2. The intersection of a first imaginary line passing through the center in the first depth direction of the first portion of the top plate and extending in the first extension direction, and a second imaginary line passing through the center in the second depth direction of the second portion of the top plate and extending in the second extension direction, is positioned so as to overlap with the middle portion of the top plate when viewed from above. The aforementioned intermediate leg is positioned further back than the intersection point in the depth direction of the intermediate section. The tabletop lifting type fixture according to claim 1.

3. A first reinforcing beam extends in the first extending direction along the lower surface of the first portion of the top plate, and is connected to the upper end of the first end telescopic leg and the upper end of the intermediate telescopic leg, The system further comprises a second reinforcing beam that extends in the second extending direction along the lower surface of the second portion of the top plate and is connected to the upper end of the second end telescopic leg and the upper end of the intermediate telescopic leg. The tabletop lifting type fixture according to claim 1 or 2.

4. The first reinforcing beam is positioned on the rear side in the first depth direction relative to the upper end of the first end extendable leg body. The second reinforcing beam is positioned on the rear side in the second depth direction relative to the upper end of the second end extendable leg. The tabletop lifting type fixture according to claim 3.

5. The system further includes a connecting member that extends in the depth direction of the intermediate portion along the lower surface of the intermediate portion of the top plate, and connects one end of the first reinforcing beam, one end of the second reinforcing beam, and the upper end of the intermediate portion telescopic leg. The tabletop lifting type fixture according to claim 4.

6. The aforementioned connecting member is The rear end of the intermediate section in the depth direction is connected to the upper end of the intermediate section telescopic leg body, It comprises a connecting plate member formed by bending a metal plate and provided on the front side in the depth direction of the intermediate part of the connecting member body, The aforementioned connecting plate member is A plate-like portion is joined to the front end of the intermediate portion in the depth direction of the connecting member body, and has a flat surface facing the front in the depth direction of the intermediate portion, A first beam connection portion extends from the plate-like portion in the first extending direction, to which one end of the first reinforcing beam is connected, It integrally includes a second beam connecting portion that extends from the plate-like portion in the second extending direction and to which one end of the second reinforcing beam is connected. The tabletop lifting type fixture according to claim 5.

7. The dimension of the first end telescopic leg in the first depth direction is smaller than the dimension of the first portion of the top plate in the first depth direction, and is formed in a columnar shape extending vertically. The second end of the telescopic leg body has a second depth dimension that is smaller than the second depth dimension of the second portion of the top plate, and is formed in a columnar shape that extends vertically. The tabletop lifting type fixture according to claim 1 or 2.

8. The first ground contact portion extends from the first end telescopic leg body along the floor surface to the rear and front sides in the first depth direction, The second ground contact portion extends from the second end telescopic leg body along the floor surface to the rear and front sides in the second depth direction. The tabletop lifting type fixture according to claim 7.

9. A tabletop with an upward-facing work surface, The system comprises a support structure that supports the top plate from below, The top plate has a shape in which the intermediate portion of the top plate located between the ends of the top plate is bent or curved so as to extend outwards to one side in a second direction that intersects horizontally with respect to a first direction connecting the ends of the top plate, with respect to the ends of the top plate on both sides in the extending direction of the top plate. The aforementioned support structure is The end legs have an end extension leg body that is provided on the underside of each of the ends of the tabletop and is extendable in the vertical direction, and a ground contact portion provided at the lower end of the end extension leg body that makes contact with the floor surface, and the end legs support the end of the tabletop from below at an intermediate position of the end of the tabletop in the depth direction of the end of the tabletop in the horizontal direction, The structure includes an intermediate telescopic leg body that is extendable in the vertical direction, and an intermediate contact portion provided at the lower end of the intermediate telescopic leg body that makes contact with the floor surface, and an intermediate leg that supports the intermediate part of the top plate from below at a position further back than the midpoint of the intermediate part of the top plate in the depth direction of the intermediate part of the top plate. A display unit with a height-adjustable tabletop.

Images