Desk top

Abstract

To make wiring of cables less noticeable at a lower surface of a top board.SOLUTION: A top board 2 is a top board for a desk and supported to a leg body 3 erecting from a floor surface, and includes a wiring hole 45 vertically penetrating therethrough, where a wiring housing recessed groove 47 is formed so as to extend toward the leg body 3 from the wiring hole 45 at a lower surface of the top board 2.SELECTED DRAWING: Figure 27

Description

[Technical Field]

[0001] The present invention relates to a desk top having wiring holes that penetrate vertically. [Background technology]

[0002] Conventionally, it has been common to provide wiring holes and outlet placement holes in the top of a desk for drawing out wiring, and to guide the wiring cable along the underside of the top using a wiring receptacle or wiring duct, etc., to the vicinity of the legs, and then further along the legs to the floor (see Patent Documents 1 and 2, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-157342 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-090801 Summary of the Invention [Problem to be solved by the invention]

[0004] Since wiring support members such as wiring receptacles and wiring ducts protrude downward from the underside of the tabletop, the wiring support members can be visible when the desk is viewed from the side, which can cause the desk to look unattractive.

[0005] The present invention has been made in view of the above circumstances, and has an object to provide a tabletop that can make wiring cables on the underside of the tabletop less noticeable. [Means for solving the problem]

[0006] The desk top of the present invention is supported by legs that are erected on the floor surface and has wiring holes that penetrate vertically, and a wiring accommodating groove is formed on the underside of the top, extending from the wiring hole toward the legs.

[0007] According to the desk top of the present invention, the wiring cable can be guided to the legs along the wiring accommodation grooves provided on the underside of the top, making the wiring routed on the underside of the top less noticeable. Furthermore, since the wiring accommodation grooves are exposed on the underside of the top, the wiring cable can be easily routed on the underside of the top (the work of aligning the wiring cable with the wiring accommodation grooves). Furthermore, since there is no need to provide wiring support members such as wiring receptacles or wiring ducts on the underside of the top, the appearance of the desk when viewed from the side is improved. This is particularly true for desks without beam members on the underside of the top.

[0008] The desk top of the present invention may further comprise a cable cover that closes the opening of the wire-accommodating groove, the underside of the cable cover being disposed substantially flush with the underside of the table top.

[0009] According to this aspect, by covering the wiring groove with a cable cover, it is possible to reliably prevent the wiring cable from hanging down and becoming exposed. Furthermore, by arranging the underside of the cover substantially flush with the underside of the tabletop, the presence of the cable cover can be made inconspicuous when the desk is viewed from the side, and a clean, even underside of the tabletop can be achieved when the tabletop is viewed diagonally from below. Note that a cable cover is not necessarily required in the present invention, and the present invention also includes a configuration in which the wiring cable is routed within the wiring groove without using a cable cover.

[0010] In the desk top of the present invention, the leg body may be provided with a leg cover that allows a wiring cable to be pulled in between the leg body and the underside of the top, and the end of the wiring accommodating groove opposite the wiring hole may be led up to the top of the leg cover.

[0011] According to this aspect, by forming the wiring accommodating groove from the wiring hole to above the leg cover, the wiring cable can be guided from the wiring accommodating groove into the leg cover without being exposed, thereby realizing a very attractive wiring routing structure in which the presence of the wiring cable on the underside of the table top is not made noticeable.

[0012] In the desk top of the present invention, the desk top is configured by connecting multiple top panel members by butting them together, and the wiring hole and the wiring accommodating groove may be formed at the joint between the top panel members.

[0013] According to this embodiment, the wiring holes and the wiring accommodating grooves can be formed at positions away from the edges of the top plate member (for example, the center of the top plate member) without drilling through-holes for the wiring holes through the top and bottom surfaces of the top plate or countersinking the grooves for the wiring accommodating grooves. Note that when the desk top plate is configured by connecting multiple top plate members, the desk top plate of the present invention includes a configuration in which the wiring holes and the wiring accommodating grooves are formed at positions other than the joints between the top plate members (positions closer to the center of the top plate members than the edges). The desk top plate of the present invention also includes a configuration in which the wiring holes and the wiring accommodating grooves are formed at positions closer to the center than the edges of a single top plate. [Effects of the Invention]

[0014] The desk top of the present invention makes it possible to make wiring cables routed on the underside of the top inconspicuous. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 2 is a perspective view of the table of the first embodiment as seen obliquely from above. [Figure 2] FIG. 2 is a perspective view of the embodiment as seen obliquely from below. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is a plan view showing the leg body of the embodiment. [Figure 7] FIG. [Figure 8] FIG. 2 is a perspective view of the leg body as seen obliquely from above. [Figure 9] FIG. 10 is a perspective view of the leg body, seen from diagonally above, with the cover separated. [Figure 10] FIG. 10 is a perspective view of the leg body, seen from diagonally below, with the cover for covering the leg body separated. [Figure 11] 8A is a cross-sectional view of the vertical support pillar taken along line XIA-XIA in FIG. 7, and FIG. 8B is a cross-sectional view of the vertical support pillar taken along line XIB-XIB in FIG. [Figure 12] 7A is a cross-sectional view of the vertical support column as viewed from the arrows XIIA-XIIA in FIG. 7, and FIG. 7B is a vertical-sectional view of the lower horizontal frame as viewed from the arrows XIIB-XIIB in FIG. [Figure 13] FIG. 7 is a longitudinal cross-sectional view of the upper leg taken along the center line of FIG. 6. [Figure 14] 7 is a vertical cross-sectional view of the upper part of the leg body taken along the line XVI-XVI in FIG. 6. [Figure 15] 7 is a longitudinal cross-sectional view of the upper part of the leg taken along the line XV-XV in FIG. 6. [Figure 16] 10A is a perspective view of a table according to a second embodiment as seen obliquely from above, and FIG. 10B is a perspective view of the same embodiment as seen obliquely from below. [Figure 17] 1A is a front view of the intermediate leg body of the embodiment, and FIG. 1B is a side view of the intermediate leg body. [Figure 18] FIG. 2 is a perspective view of the intermediate leg body as seen obliquely from above. [Figure 19] FIG. 2 is a perspective view of the intermediate leg body as seen from diagonally below. [Figure 20] FIG. [Figure 21] FIG. 10 is a bottom view of the underside of the top plate showing an enlarged view of the connection points of the top plate members. [Figure 22] FIG. 2 is an exploded perspective view of the edge top plate member as viewed from below. [Figure 23] FIG. 10 is a perspective view showing the connection points between the front and rear edge top plate members in a separated state. [Figure 24] 21. (A) is a longitudinal cross-sectional view taken along the line XXIVA-XXIVA in FIG. 21, and (B) is a longitudinal cross-sectional view taken along the line XXIVB-XXIVB in FIG. [Figure 25] FIG. 10 is a perspective view showing the connection points between the edge top plate member and the central top plate member in a separated state. [Figure 26]FIG. 26 is a longitudinal cross-sectional view taken along the line XXVI-XXVI in FIG. 21. [Figure 27] 10 is a perspective view of the connection point between the central top plate member and the edge top plate member, viewed obliquely from below. FIG. [Figure 28] FIG. 10 is a perspective view showing a socket unit attached to an edge top plate member. [Figure 29] FIG. 2 is a cross-sectional view showing the outlet unit together with an edge top plate member. [Figure 30] FIG. 4 is a perspective view showing the periphery of a wire-accommodating groove and a cable cover. [Figure 31] 10 is a cross-sectional view illustrating the periphery of the tip of the cable cover. FIG. [Figure 32] FIG. 4 is a cross-sectional view illustrating a wiring structure around the leg cover. [Figure 33] 10 is a cross-sectional view showing half of a socket unit attached to an edge top plate member. FIG. [Figure 34] 21 is a vertical cross-sectional view of the left and right edges of the top plate as viewed from the arrows XXXIV-XXVI in FIG. 20. DETAILED DESCRIPTION OF THE INVENTION

[0016] [Schematic configuration of the first embodiment] Next, the present invention will be described in detail with reference to the drawings. In the first embodiment shown in FIGS. 1 to 15, a table 1 has a pair of left and right legs 3 that support portions of a tabletop 2 near the longitudinal edges. For convenience, the terms "front-rear" and "left-right" are used in this specification to specify directions. However, the longitudinal direction of the tabletop 2 along which the pair of legs 3 are arranged is defined as the left-right direction, and the direction perpendicular to the left-right direction in a horizontal plane is defined as the front-rear direction. Note that the present invention is not limited to the configurations specified in the embodiments described below.

[0017] As shown in FIGS. 1 to 5, the tabletop 2 has a generally rectangular shape that is long in the left-right direction and is configured by connecting multiple tabletop members. The tabletop 2 has two central tabletop members 2A connected to the front and back, and edge tabletop members 2B connected to the left and right edges of each central tabletop member 2A, for a total of six tabletop members connected together. The edge tabletop members 2B arranged at the front and back are connected to each other. In this embodiment, although the tabletop 2 is a large tabletop, it does not have beam members extending in the longitudinal direction of the tabletop 2 on its underside, resulting in an attractive configuration that gives a simple and very neat impression when viewed from the front.

[0018] Socket units 4 are disposed on the upper surface of the tabletop 2. In this embodiment, three socket units 4 are disposed at intervals along the longitudinal direction of the tabletop 2 in the central front-to-rear portion of the tabletop 2. Each socket unit 4 includes a left-right elongated bar member 41 disposed along the longitudinal direction of the tabletop 2, a pair of left-right support members 42 supporting the left and right edges of the bar member 41, and a pair of left-right outlets 43 disposed within the bar member 41 near the left and right edges. Each outlet 43 includes a plurality of plug sockets (four in this embodiment). The plug sockets are disposed in a row at intervals along the longitudinal direction of the bar member 41 and are exposed on the upper surface of the bar member 41.

[0019] As shown in the front view of Figure 3, a pair of left and right leg bodies 3 are connected to the underside of the tabletop 2. Each leg body 3 has a leg main body 31 that slopes downward inward in the longitudinal direction of the tabletop 2, and a reinforcing member 32 that slopes upward from the lower part of the leg main body 31 inward in the longitudinal direction of the tabletop 2. In other words, the lower end of the leg main body 31 is located more inward in the longitudinal direction of the tabletop 2 than the upper end of the leg main body 31. Also, the upper end of the reinforcing member 32 is located more inward in the longitudinal direction of the tabletop 2 than the lower end of the reinforcing member 32. A pair of front and rear screw-type adjusters 5 are provided at the front and rear ends of the underside of the leg main body 31.

[0020] 5 and other figures, in this embodiment, the legs 3 are arranged below the two edge top panel members 2B that are connected in the front-to-rear direction. Note that the legs 3 may also be arranged below the central top panel member 2A that is connected in the front-to-rear direction to the edge top panel member 2B.

[0021] [Leg structure] As shown in Figures 4, 6 to 10, etc., the leg body 31 of the leg body 3 includes a pair of front and rear vertical struts 33 that tilt downward inward in the longitudinal direction of the tabletop 2, and a lower horizontal frame 34 that connects the lower parts of the vertical struts 33. The lower end of the reinforcing member 32 is connected to the midpoint of the lower horizontal frame 34 in the front-to-rear direction. A leg strut cover 39 is attached to the vertical strut 33, forming a space between the vertical strut 33 and the leg strut cover 39 into which the distribution cable 100 can be inserted.

[0022] The leg body 31 includes an upper horizontal frame 35 that connects the upper parts of the vertical supports 33. The leg body 3 includes a reinforcing frame 36 that extends from the longitudinal midpoint of the upper horizontal frame 35, which extends in the front-to-rear direction, toward the longitudinal center of the tabletop 2. The upper ends of the reinforcing members 32 are connected to the reinforcing frame 36.

[0023] As shown in Figures 2 to 10, the table 1 is equipped with a leg cover 6 that covers the reinforcing frame 36 of the leg body 3 from below and is fixed to the underside of the tabletop 2 with screws, and a locking mechanism 38 that temporarily fastens the leg cover 6 using magnetic force.

[0024] As described above, in the table 1 of this embodiment, the leg body 31 is tilted downward and inward, and therefore the upper part of the leg body 31 is positioned outside the lower part of the leg body 31, allowing the table top 2 to be supported outside the ground contact area (in this embodiment, the adjuster 5 attached to the lower part of the leg body 31). This makes it possible to position the lower parts of the legs 3 inward while suppressing deflection of the table top 2. Furthermore, even if the legs 3 are positioned close to the left and right edges of the table top 2, they are unlikely to get in the way of table users. This improves the usability of the table 1. Furthermore, because the table top 2 can be supported outside the ground contact area while overhanging it, it is possible to suppress deflection of the table top 2 due to a downward load, while still allowing the legs 3 to be configured so as not to get in the way of table users.

[0025] Compared to a vertical leg configuration in which the table top is supported by vertical legs, table 1 of this embodiment can support table top 2 further outward than a vertical leg configuration when the ground contact part is in the same position, making it possible to construct a table that is resistant to bending of table top 2. Also, because leg body 31 is tilted inward toward the bottom, leg body 31 can be brought closer to the line passing through the ground contact part (the lower part of leg body 31) and the edge of table top 2, which has the effect of visually emphasizing that table 1 has an overhanging table top 2.

[0026] In addition, the leg body 3 is equipped with a reinforcing member 32 that tilts inward from the bottom of the leg body 31 upward, so that when a force is applied to the tabletop 2 in the lateral sway direction (longitudinal direction of the tabletop), the reinforcing member 32 that tilts inward from the bottom of the leg body 31 upward becomes taut, thereby preventing the leg body 31, which tilts inward downward, from tilting further and reducing lateral sway.

[0027] Furthermore, by connecting the lower parts of a pair of front and rear vertical supports 33 of the leg body 31 with a lower horizontal frame 34 extending in the front-to-rear direction, the rigidity of the leg body 31 is increased and front-to-rear shaking of the table top 2 is suppressed. Furthermore, by connecting the lower end of the reinforcing member 32 to the lower horizontal frame 34, the reinforcing member 32 can be positioned below the table top 2 closer to the center in the front-to-rear direction than the vertical supports 33. This prevents the reinforcing member 32 from interfering with the feet or other parts of the table top 2 at the front and rear edges, improving usability.

[0028] In addition, in this embodiment, a single reinforcing member 32 can prevent further inward tilt of the two front and rear vertical supports 33, thereby reducing manufacturing costs and achieving a simple appearance. Note that in the table of the present invention, the number of reinforcing members 32 is not limited to one, and may be two or more.

[0029] Furthermore, by configuring the leg body 31 of the table 1 in a frame shape using a pair of front and rear vertical supports 33 and upper and lower horizontal frames 34, 35, the rigidity of the leg body 31 can be further increased, thereby suppressing forward and backward shaking of the tabletop 2. Furthermore, when the leg body 3 is viewed from the front-to-rear direction (the short side direction of the tabletop 2), the leg body 31, reinforcing member 32, and reinforcing frame 36 form a triangular structure, thereby increasing the rigidity of the leg body 3. Furthermore, since the upper horizontal frame 35 and reinforcing frame 36 of the leg body 31 can be firmly connected to the underside of the tabletop 2, the connection strength between the tabletop 2 and the leg body 3 can be improved.

[0030] Furthermore, the appearance of the table 1 can be improved by covering the reinforcing frame 36 with the leg cover 6. Also, the table 1 has a locking mechanism 38 that allows the leg cover 6 to be temporarily fixed, making it easy to tighten and loosen the screws that secure the leg cover. In the table 1 of this embodiment, the leg cover 6 can also be used as a wire holder.

[0031] [Details of each leg part] Next, a detailed description will be given of each part of the leg 3. The leg 3 has a configuration that is roughly symmetrical in the front-rear direction across a front-rear center line C (see FIG. 6) that extends in the left-right direction in a plan view.

[0032] As shown in Figures 4 and 8 to 10, the leg body 31 of the leg structure 3 has a rectangular frame shape formed by connecting a pair of front and rear vertical struts 33 and upper and lower horizontal frames 34, 35. The vertical struts 33 are arranged so that they tilt inward in the left-right direction (longitudinal direction of the tabletop 2) as they extend downward when viewed from the front-to-rear direction (the shorter side direction of the tabletop 2), and also tilt inward in the front-to-rear direction as they extend downward when viewed from the left-to-right direction. In other words, the lower end of the vertical strut 33 is located inside the upper end of the vertical strut 33 in the left-to-right and front-to-rear directions.

[0033] The horizontal frames 34, 35 are disposed to extend in the front-to-rear direction, with the front and rear ends of the lower horizontal frame 34 fixed to the lower ends of the vertical support columns 33, and the front and rear ends of the upper horizontal frame 35 fixed to the upper ends of the vertical support columns 33. The length of the lower horizontal frame 34 in the front-to-rear direction is shorter than that of the upper horizontal frame 35. In other words, when viewed from the left-to-right direction, the leg body 31 is trapezoidal in shape with the lower base shorter than the upper base.

[0034] In this way, in the table 1 of this embodiment, the vertical supports 33 of the leg body 31 are tilted downward and inward in the front-to-back direction, so even if the front and rear portions of the upper end of the leg body 31 are positioned close to the front and rear edges of the tabletop 2, they do not interfere with the table user. Furthermore, because the portion of the leg body 31 that supports the tabletop 2 can be positioned close to the front and rear edges of the tabletop 2, the distance between the underside of the tabletop 2 supported by the upper end of the leg body 31 and the front and rear edges of the tabletop 2 can be reduced, thereby reducing damage to the tabletop 2 when a downward load is applied to the front and rear edges of the tabletop 2. The vertical supports 33 may be positioned vertically when viewed from the left and right, or they may be positioned tilted downward and outward in the front-to-back direction. In other words, the desk top of the present invention includes a configuration in which the lower ends of the vertical supports are positioned directly below or outside the upper ends in the front-to-back direction.

[0035] As shown in Figures 7, 11, etc., each vertical support 33 of the leg body 31 comprises a vertical support pipe 331 made of a square metal pipe extending in the vertical direction, and a metal support reinforcing plate 332 with a U-shaped cross section fixed inside the vertical support pipe 331. The support reinforcing plate 332 is fixed inside the vertical support pipe 331 with its opening facing outward in the front-to-rear direction. A screw-in type adjuster 5 is provided at the lower end of the vertical support pipe 331.

[0036] As shown in FIG. 11 , the vertical support pipe 331 forming the exterior of the vertical support 33 has a generally rectangular cross section. The widths of the first support surface portion 33a (facing outward in the left-right direction) and the second support surface portion 33b (facing inward in the left-right direction) are smaller than the widths of the parallel third support surface portion 33c (facing outward in the front-rear direction) and the parallel fourth support surface portion 33d (facing inward in the front-rear direction). The first support surface portion 33a (facing outward in the front-rear direction) is offset outward in the front-rear direction relative to the second support surface portion 33b (facing inward in the left-rear direction). As a result, the first support surface portion 33a and the second support surface portion 33b are inclined relative to the front-rear direction in plan view so that their outer edges in the front-rear direction are located inside their inner edges in the front-rear direction. The third support surface portion 33c and the fourth support surface portion 33d are also inclined relative to the left-rear direction in plan view so that their inner edges in the front-rear direction are located outside their outer edges in the front-rear direction.

[0037] As shown in Figures 7 to 12, a leg support cover 39 that covers the support surface portions 33a, 33b, and 33c is detachably attached to the vertical support 33. The leg support cover 39 is made of a metal plate formed, for example, by bending, into a generally C-shaped cross section. The leg support cover 39 has a third support cover surface portion 39c that extends vertically along the third support surface portion 33c. A pair of left and right support cover surface portions, a first support cover surface portion 39a and a second support cover surface portion 39b, facing the support surface portion 33a or 33b, rise up inward in the front-to-rear direction from both left and right edges of the third support cover surface portion 39c. A pair of left and right fourth support cover surface portions 39d rise up from the tips of the support cover surface portions 39a and 39b in directions approaching each other and parallel to the third support cover surface portion 39c. Between the tip ends of the left and right fourth pillar cover surface portions 39d is provided a gap that is slightly larger than the left-right width of the fourth pillar surface portion 33d of the vertical pillar pipe 331. The tip end of the fourth pillar cover surface portion 39d is provided with a bent portion that is bent toward the third pillar cover surface portion 39c.

[0038] As shown in Figure 11 and other figures, the left-right width of the third support cover surface portion 39c is greater than the left-right width of the third support surface portion 33c. The first support cover surface portion 39a and the second support cover surface portion 39b, which rise from the left and right edges of the third support cover surface portion 39c, are arranged parallel to each other in the front-to-rear direction and spaced apart from the support surface portions 33a and 33b when the leg support cover 39 is attached to the vertical support 33. An internal support wiring space 201, through which the wiring cable 100 can be inserted, is formed between the second support cover surface portion 39b and the second support surface portion 33b of the vertical support pipe 331. A space 202 is formed between the first support cover surface portion 39a and the first support surface portion 33a.

[0039] The front-to-rear width of the pillar cover surface portions 39a, 39b is set to a dimension such that the pair of left and right fourth pillar cover surface portions 39d are generally flush with the fourth pillar surface portion 33d of the vertical pillar pipe 331. The tips of the left and right fourth pillar cover surface portions 39d are close to both left and right edges of the fourth pillar surface portion 33d. In other words, the spaces 201, 202 are surrounded by the vertical pillar 33 and the leg support cover 39, and the wiring cable 100 passing through the internal pillar wiring space 201 is configured to be invisible from the outside.

[0040] As shown in Figures 9 and 11, a nut holding member 391 is fixed to the inner wall surface of the third support cover surface portion 39c of the leg support cover 39 near the upper end, and a locking claw member 392 is fixed to the inner wall surface near the lower end. The nut holding member 391 is made of metal and has a pair of upper and lower mounting portions 391a fixed to the inner wall surface of the third support cover surface portion 39c with a gap between them, a pair of upper and lower upright portions 391b rising from opposing edges of the upper and lower mounting portions 391a, and a nut holding portion 391c connecting the upper ends of the upper and lower upright portions 391b. A nut member 393 having a screw hole disposed perpendicular to the third support cover surface portion 39c is held by the nut holding portion 391c. The locking claw member 392 is made of metal and has a plate-shaped mounting portion 392a fixed to the inner wall surface of the third support pillar cover surface portion 39c, and a pair of upward hook-shaped claw portions 392b on the left and right sides that rise from the upper portions of the left and right edges of the mounting portion 392a.

[0041] An upper opening 333 is formed near the upper end of the third support surface portion 33c of the vertical support 33, allowing the upstanding portion 391b and nut holding portion 391c of the nut holding member 391 and the nut member 393 to be inserted into the vertical support pipe 331. A lower opening 334 is formed near the lower end of the third support surface portion 33c, allowing the claw portion 392b of the locking claw member 392 to be inserted into the vertical support pipe 331. A screw insertion hole 335 facing the upper opening 333 is formed near the upper end of the fourth support surface portion 33d of the vertical support 33. The screw insertion hole 335 passes through the third support surface portion 33c and the support reinforcement plate 332.

[0042] When attaching the leg support cover 39 to the vertical support 33, the leg support cover 39 is fitted onto the vertical support 33 from the outside in the front-to-rear direction, and the nut holding member 391 and the locking claw member 392 are inserted into the upper opening 333 and the lower opening 334. Next, the leg support cover 39 is lifted upward to position the tip of the claw portion 392b above the lower opening 334 to prevent it from coming off, and the screw hole of the nut member 393 held by the nut holding member 391 is aligned with the screw insertion hole 335. In this state, the support cover fixing screw 336 is inserted into the screw insertion hole 335 from the inside in the front-to-rear direction and screwed into the nut member 393. The screw head is then tightened until it contacts the fourth support surface portion 33d, fastening the upper part of the leg support cover 39 to the vertical support 33.

[0043] As shown in FIG. 4, when the vertical support 33 with the leg support cover 39 attached is viewed from the left and right, the fourth support surface portion 33d and the fourth support cover surface portion 39d, which are the front and rear inward-facing surfaces of the vertical support 33 and the leg support cover 39, come into view. This makes the vertical support 33 and the leg support cover 39 appear thick, creating a leg body 3 that gives an impression of being sturdy and solid. Note that the front and rear support surface portions 33c and 33d of the vertical support 33 may be arranged parallel to the left and right direction. In other words, the desk top of the present invention includes a configuration in which the front and rear side surfaces of the vertical support are arranged parallel to the left and right direction. However, in the desk top of the present invention, the vertical support is not limited to a square pipe, and the cross-sectional shape of the vertical support is not particularly limited, for example, to a circular shape.

[0044] As shown in Figures 9, 10, 12(B), etc., the lower horizontal frame 34 that connects the lower ends of the front and rear vertical struts 33 comprises a lower lower frame 341 that has an approximately C-shaped cross section and extends in the front-to-rear direction with an upward opening, and a lower upper frame 342 that has an approximately C-shaped cross section and a downward opening that covers and is fixed to the lower lower frame 341.

[0045] The lower frame 341 is made of steel, and its lower surface 34d extends substantially horizontally in the front-to-rear direction. A pair of left and right upright surfaces 341a, 341b extend from the left and right edges of the lower surface 34d. The outer upright surface 341a and the inner upright surface 341b are parallel to each other and extend obliquely outward in the front-to-rear direction, with their upper ends positioned further outward in the front-to-rear direction. When viewed from the front-to-rear direction, the inclination of the upright surfaces 341a, 341b is approximately the same as the inclination of the vertical support 33 and the leg support cover 39.

[0046] A pair of left and right upper surface portions 341c extend substantially horizontally from the upper ends of the upright surface portions 341a, 341b in the direction approaching each other. The tips of the left and right upper surface portions 341c are spaced apart, and an open groove is formed on the upper surface of the lower frame 341, extending straight from one front-rear end to the other front-rear end.

[0047] 10 and 12(A), the front and rear ends of the lower frame 341 are fixed to the lower ends of the vertical support pipes 331 of the vertical support 33, and are cut out in a generally L-shape to fit along the fourth support surface portion 33d facing inward in the front-to-rear direction and the second support surface portion 33b facing inward in the left-to-right direction. The bottom surface portion 34d of the lower frame 341 is joined to the second support surface portion 33b and the fourth support surface portion 33d of the vertical support pipe 331, and the upright surface portion 341b and the top surface portion 341c on the inside in the left-to-right direction are joined to the second support surface portion 33b. The upright surface portion 341a and the top surface portion 341c on the outside in the left-to-right direction are joined to portions of the fourth support surface portion 33d closer to the outside in the left-to-right direction. In this way, by cutting out the front and rear ends of the lower lower frame 341 in an approximately L-shape, the area that can be welded to the vertical support pipe 331 can be increased, and the joining strength between the vertical support pipe 331 and the lower lower frame 341 can be increased.

[0048] As shown in Figures 9, 12, etc., the lower part of the leg support cover 39 covers the front and rear ends of the upright surface portion 341b and the upper surface portion 341c on the left-right inner side of the lower lower frame 341. A lower cutout portion 394 is formed in the lower part of the fourth support cover surface portion 39d on the left-right inner side of the leg support cover 39 so as not to interfere with the lower lower frame 341. An upper cutout portion 395 is formed in the upper part of the leg support cover 39 for drawing the distribution cable 100 into the leg support cover 39. The upper cutout portion 395 opens to a location on the front-to-rear inner side of the upper end of the second support cover surface portion 39b and to the upper end of the fourth support cover surface portion 39d on the left-to-right inner side.

[0049] 12(B) and other figures, the lower upper frame 342 is made of sheet metal and has an upper surface 34c disposed on the upper surface of the lower lower frame 341 to close the upward opening of the frame 341. A pair of left and right side surfaces 34a, 34b extend downward from both left and right edges of the upper surface 34c. The outer side surface 34a and the inner side surface 34b are parallel to each other and inclined inward in the left-right direction at approximately the same angle as the leg support cover 39 when viewed from the front-to-rear direction.

[0050] The outer side surface portion 34a in the left-right direction faces the upright surface portion 341a of the lower frame 341, and is disposed with a small gap therebetween. A folded portion 342a, which is bent inward and then folded back upward, is continuous with the lower edge of the side surface portion 34a. The folded portion 342a is fixed to the lower edge of the upright surface portion 341a. Both front and rear edges of the side surface portion 34a are close to the fourth support cover surface portion 39d on the outer left-right direction of the leg support cover 39 attached to the vertical support 33.

[0051] The inner side surface portion 34b in the left-right direction faces, with a gap between them, the upright surface portion 341b of the lower frame 341. A folded portion 342b, which is bent inward and folded back diagonally upward, is continuous with the lower edge of the side surface portion 34b. The tip of the folded portion 342b is fixed to a lower portion of the upright surface portion 341b. Both front and rear edges of the side surface portion 34a are close to the inner edge in the left-right direction (on the side of the second support cover surface portion 39b) of the fourth support cover surface portion 39d, which is on the inner left-right direction of the leg support cover 39 attached to the vertical support 33.

[0052] As shown in Figures 8, 9 and 11(B), the front and rear ends of the lower upper frame 342 are cut diagonally in the front-to-back and left-to-right directions so as to be arranged along the fourth support surface portion 33d and the fourth support cover surface portion 39d of the vertical support 33 and the leg support cover 39.

[0053] The lower edge of the reinforcing member 32 is connected to the center in the front-to-rear direction of the intersection (the upper corner on the inside in the left-right direction) between the side surface portion 34b and the top surface portion 34c of the lower horizontal frame 34 (lower upper frame 342). The reinforcing member 32 is made of a metal pipe and is disposed to extend diagonally upward from the lower horizontal frame 34 toward the inside in the left-to-right direction.

[0054] As shown in Figures 9, 10, 14, etc., the upper horizontal frame 35 connecting the upper ends of the front and rear vertical columns 33 includes an upper horizontal pipe 351 made of a square metal pipe extending in the front-to-rear direction, and a metal frame reinforcing plate 352 with a U-shaped cross section fixed inside the upper horizontal pipe 351. The upper horizontal pipe 351 has a substantially rectangular cross section with its cross section elongated horizontally. The upper horizontal pipe 351 includes an upper surface 35c attached to the underside of the tabletop 2, a pair of left and right side surfaces 35a, 35b hanging down from the left and right edges of the upper surface 35c, and a lower surface 35d connecting the lower edges of the side surfaces 35a, 35b. The frame reinforcing plate 352 is fixed inside the upper horizontal pipe 351 with its opening facing upward.

[0055] As shown in Figure 6, etc., both front and rear ends of the upper horizontal frame 35 are cut diagonally in the front-to-back and left-to-right directions so as to be arranged along the top of the fourth support surface portion 33d of the vertical support 33, and are firmly fixed to the top of the fourth support surface portion 33d by welding.

[0056] A reinforcing frame 36 is provided at the longitudinal (front-to-back) central portion of the upper horizontal frame 35, extending from the upper horizontal frame 35 toward the longitudinal (left-right) central portion of the tabletop 2. The reinforcing frame 36 is made of metal, and has a bottom surface 36a that extends approximately horizontally from near the intersection (the inner lower corner in the left-right direction) between the side surface portion 35b and the bottom surface portion 35d on the inner left-right side of the upper horizontal frame 35 toward the inner left-right direction.

[0057] A pair of front and rear side walls 36b rise from the front and rear edges of the bottom surface 36a, and a pair of front and rear mounting surfaces 36c extend substantially horizontally from the upper end of each side wall 36b outward in the front-to-rear direction. The mounting surfaces 36c are attached to the underside of the top plate 2, and the upper surfaces of the mounting surfaces 36c and the upper surfaces of the upper surfaces 35c of the upper horizontal frames 35 are provided on the same plane. The outer corners in the front-to-rear direction of the inner left-to-right end of each mounting surface 36c (the end opposite the upper horizontal frame 35) are notched diagonally in plan view. A plurality of openings 36f are formed in the mounting surface 36c at intervals in the left-to-right direction.

[0058] A tongue portion 36d extends downward from the end of the bottom surface portion 36a facing the upper horizontal frame 35. The base end of the tongue portion 36d (the bottom surface portion 36a side) is bent upward and then bent further toward the horizontal direction to form a crank shape. The horizontally extending portion of the tongue portion 36d is fixed to the underside surface 35d of the upper horizontal frame 35. The ends of the side wall portion 36b and the mounting surface portion 36c facing the upper horizontal frame 35 are fixed to the side surface portion 35b on the inner side in the left-right direction of the upper horizontal frame 35.

[0059] 6 and other figures, the bottom surface 36a is formed with an opening 36g that penetrates in the vertical direction and through which a wiring cable 101 that is pulled out from the outlet unit 4 provided on the top panel 2 to below the top panel 2 can be inserted. In this embodiment, two rectangular elongated hole-shaped openings 36g are provided at a distance in the horizontal direction and through which an attachment plug 102 connected to an end of the wiring cable 101 can be inserted.

[0060] Although detailed description will be omitted here, the left and right outlets 43 of each outlet unit 4 (see FIGS. 1 to 5) are electrically connected within the bar member 41. The wiring cables 100 of the left and right outlet units 4 are drawn out below the tabletop 2 via support members 42 located above the legs 3 and are drawn into the leg cover 6. The wiring cable 100 of the central outlet unit 4 is drawn out to the underside of the tabletop 2 via one of the support members 42, and passes through a wiring groove provided on the underside of the tabletop 2 before being drawn into the leg cover 6 of one of the left and right legs 3.

[0061] A pair of front and rear upper reinforcing plates 37 are provided to connect the left-right midpoint of each mounting surface portion 36c to the front-rear edge of the upper horizontal frame 35. The upper reinforcing plates 37 are made of metal, and one end is fixed to the left-right midpoint of the outer front-rear edge of the mounting surface portion 36c, while the other end is fixed to a position near the upper end of the edge of the side portion 35b of the upper horizontal frame 35. The thickness of the upper reinforcing plates 37 is approximately the same as that of the mounting surface portions 36c. The upper surface of the upper reinforcing plates 37 is provided in the same plane as the upper surfaces of the mounting surface portions 36c and the upper surface 35c of the upper horizontal frame 35.

[0062] 7, 10, etc., the upper end of the reinforcing member 32 is connected to the bottom of the reinforcing frame 36. The reinforcing member 32 is disposed in an inclined position such that the inner side in the left-right direction is higher and the inner outer side in the left-right direction is lower in a front view, and is interposed between the reinforcing frame 36 and the lower part (lower horizontal frame 34) of the leg 3. The upper end of the reinforcing member 32 is fixed to the lower surface of the bottom surface portion 36a of the reinforcing frame 36, specifically to a central part in the front-rear direction of a midpoint in the left-right direction of the bottom surface portion 36a.

[0063] 6, 15, etc., a number of screw insertion holes 35e penetrating in the vertical direction are formed in the upper horizontal frame 35. Furthermore, screw insertion holes 36e penetrating in the vertical direction are formed in the mounting surface portion 36c of the reinforcing frame 36. Threaded holes for embedded nut members 7 are exposed on the underside of the top plate 2 at positions corresponding to the screw insertion holes 35e, 36e.

[0064] The legs 3 are connected to the underside of the tabletop 2 by screwing the leg fixing screws 8 into the embedded nut members 7 of the tabletop 2 through the screw insertion holes 35e, 36e and tightening them, with the underside of the tabletop 2 in contact with the upper surface 35c of the upper horizontal frame 35 and the mounting surface 36c of the reinforcing frame 36. Note that the leg fixing screws 8 are not shown in Figure 13(B). The work of attaching the legs 3 to the tabletop 2 can be performed, for example, by placing the legs 3 on the underside of the tabletop 2 that has been turned upside down, with the upper horizontal frame 35 and reinforcing frame 36 side down.

[0065] Next, the leg cover 6 will be described. As shown in Figures 4 and 6 to 10, the leg cover 6 has a box-like shape that is generally trapezoidal in plan view and open at the top, and is attached to the underside of the tabletop 2 so as to cover the upper horizontal frame 35 and reinforcing frame 36 of the leg body 3. The leg cover 6 is made of ferromagnetic sheet metal, and has a first leg cover 61 that covers the tip side portion (the inner side in the left-right direction) of the reinforcing frame 36, a second leg cover 62 that covers the base side portion of the reinforcing frame 36 and the upper reinforcing plate 37, and a third leg cover 63 that covers the upper horizontal frame 35. The first, second, and third leg covers 61, 62, and 63 are attached to the underside of the tabletop 2 adjacent to each other in that order from the inner side in the left-right direction.

[0066] As can be seen from Figure 6, the first and second leg covers 61, 62, when adjacent to each other, have the overall shape of a substantially isosceles trapezoid in a plan view, with a pair of bases aligned in the front-to-rear direction. The substantially isosceles trapezoid has a longer base on the outer side in the left-right direction (the base end side of the reinforcing frame 36) than on the inner side in the left-right direction (the tip end side of the reinforcing frame 36). The planar shapes of the first and second leg covers 61, 62 (i.e., substantially isosceles trapezoids) are obtained by dividing the isosceles trapezoid roughly along the front-to-rear direction. The base on the outer side in the left-right direction (the second leg cover 62 side) of the first leg cover 61 and the base on the inner side in the left-right direction (the first leg cover 61 side) of the second leg cover 62 are close to each other.

[0067] As shown in Figures 6 to 10, 13, etc., the first leg cover 61 has a first bottom portion 61a made of ferromagnetic sheet metal and disposed below the tip end portion of the reinforcing frame 36 with a gap between it and the bottom surface portion 36a. The first bottom portion 61a has a generally isosceles trapezoidal planar shape. A notched opening 61h for passing the reinforcing member 32 is formed on the edge of the first bottom portion 61a facing the second leg cover 62. A first upright portion 61b extends from the inner bottom edge and front and rear leg edges of the first bottom portion 61a, surrounding it on three sides, and a first mounting surface portion 61c extends outward from the tip of the first upright portion 61b. A first outer peripheral wall portion 61d hangs down from the outer peripheral edge of the first mounting surface portion 61c, and a first folded portion 61f, which is folded back inward and has a generally L-shaped cross section, continues from the lower end of the first outer peripheral wall portion 61d.

[0068] The second leg cover 62 has a second bottom portion 62a made of ferromagnetic sheet metal and disposed below the central and base-end portions of the reinforcing frame 36 with a gap between it and the bottom surface portion 36a. The second bottom portion 62a has a substantially isosceles trapezoidal planar shape and is disposed flush with the first bottom portion 61a. A notched opening 62h extending in the left-right direction is formed on the edge of the second bottom portion 62a facing the first leg cover 61. A pair of front and rear second upright portions 62b extend from the front and rear leg edges of the second bottom portion 62a, and a second mounting surface portion 62c extends outward in the front-rear direction from the tip of the second upright portion 62b. A second outer peripheral wall portion 62d hangs down from the outer peripheral edge of the second mounting surface portion 62c, and a second folded portion 62f, folded inward and having a substantially L-shaped cross section, is continuous with the lower end of the second outer peripheral wall portion 62d.

[0069] A plurality of screw insertion holes 61e, 62e that penetrate vertically through the mounting surface portions 61c, 62c are formed in the first and second leg covers 61, 62. As shown in Fig. 15, leg cover nut members 9 are embedded in the underside of the top plate 2 at positions corresponding to the screw insertion holes 61e, 62e.

[0070] Gaps 61g, 62g are provided between the upright portions 61b, 62b and the outer peripheral wall portions 61d, 62d. Leg cover fixing screws 64 for attaching the leg covers 61, 62 to the underside of the table top 2 are inserted into the screw insertion holes 61e, 62e from the gaps 61g, 62g side, and a tool can be inserted into the gaps 61g, 62g to tighten or loosen the leg cover fixing screws 64. The leg cover fixing screws 64 screwed into the underside of the table top 2 are hidden by the outer peripheral wall portions 61d, 62d when viewed from the periphery of the table 1 and are not exposed, resulting in an attractive mounting structure for the leg covers 6.

[0071] The outer edge in the left-right direction of the second leg cover 62 is disposed adjacent to the upper part of the leg main body 31. The ends of the second outer peripheral wall portion 62d and the second folded portion 62f facing the leg main body 31 are adjacent to the upper part of the second support column cover surface portion 39b of the leg support cover 39. More specifically, the end of the second outer peripheral wall portion 62d is disposed along the outer edge in the front-to-rear direction of the upper part of the second support column cover surface portion 39b. As a result, the upper cutout portion 395 provided on the upper part of the second support column cover surface portion 39b for pulling in the distribution cable 100 is not exposed to the surroundings, resulting in a configuration with a good appearance.

[0072] As shown in Figures 7, 10, 13, 15, etc., a locking mechanism 38 is attached to the underside of the bottom portion 36a of the reinforcing frame 36. The locking mechanism 38 magnetically fastens the first and second leg covers 61, 62 of the leg cover 6. The locking mechanism 38 has a permanent magnet and magnetically attaches the first and second bottom portions 61a, 62a, which are made of a ferromagnetic material. In this embodiment, four locking mechanisms 38 are provided at intervals along the longitudinal direction (left-right direction) of the reinforcing frame 36. Of these locking mechanisms 38, the locking mechanism 38 located at the tip of the reinforcing frame 36 magnetically attaches the first bottom portion 61a of the first leg cover 61. The second locking mechanism 38 from the tip of the reinforcing frame 36 is located at the boundary between the first and second leg covers 61, 62 and magnetically attaches the first and second bottom portions 61a, 62a. The remaining two locking mechanisms 38 are disposed near the base end of the reinforcing frame 36 and magnetically attach the second bottom portion 62a of the second leg cover 62. Note that the leg cover 6 may be formed from a material that is not easily attracted to magnets, such as resin, and ferromagnetic members may be placed in the locations corresponding to the locking mechanisms 38 to temporarily fasten the leg cover 6.

[0073] When attaching the first and second leg covers 61, 62 to the underside of the tabletop 2, the locking mechanism 38 can temporarily fasten the leg covers 61, 62 to the bottom of the tabletop 2 by magnetic force. This makes it easy to tighten and loosen the leg cover fixing screws 64 when attaching or detaching the leg covers 61, 62 to or from the underside of the tabletop 2.

[0074] The locking mechanism 38 has a height dimension greater than the thickness of the distribution cable 100 and the distribution cable 101 described below. The interposition of the locking mechanism 38 between the bottom surface 36a of the reinforcing frame 36 and the bottom surfaces 61a, 61b of the first and second leg covers 61, 62 allows the distribution cables 100, 101 to be positioned between the bottom surface 36a and the bottom surfaces 61a, 61b. This reduces the interference with the magnetic attachment of the first and second leg covers 61, 62 to the locking mechanism 38 during the temporary fastening process of magnetically attaching the first and second leg covers 61, 62 to the locking mechanism 38, even if the distribution cables 100, 101 placed on the leg covers 61, 62 overlap the bottom surface 36a of the reinforcing frame 36 in a plan view. This eliminates the need to precisely route the distribution cables 100, 101 through the leg covers 61, 62, improving work efficiency.

[0075] As shown in Figures 4, 8 to 10, etc., the third leg cover 63 of the leg cover 6 is provided to cover the upper horizontal frame 35 between the front and rear vertical struts 33 of the leg body 3. More specifically, the third leg cover 63 covers the outer side surface portions 35a and undersurface portions 35d in the left-right direction of the upper horizontal frame 35, the upper part of the inner side surface portion (fourth support surface portion 33d) in the front-rear direction of the vertical strut 33, and the upper part of the inner side surface portion (fourth support cover surface portion 39d) in the front-rear direction of the leg support cover 39.

[0076] The third leg cover 63 has a third bottom portion 63a disposed below the upper horizontal frame 35 and spaced apart from the lower surface portion 35d. Both front and rear ends of the third bottom portion 63a are closely spaced along the inner front-rear surface portions (fourth support surface portion 33d and fourth support cover surface portion 39d) of the vertical support 33 and the leg support cover 39. The third bottom portion 63a is disposed on the same plane as the second bottom portion 62a of the second leg cover 62 and is located below the support cover fixing screw 336 and the upper notch portion 395 of the leg support cover 39. The left-right width of the third bottom portion 63a is approximately the same as the left-right width of the leg support cover 39, and the third bottom portion 63a is disposed in a position that approximately overlaps with the leg support cover 39 when viewed from the front-rear direction.

[0077] A third outer wall surface portion 63b rises diagonally outward in the left-right direction from the outer edge of the third bottom portion 63a and faces the side surface portion 35a of the upper horizontal frame 35. When viewed from the front-to-rear direction, the third outer wall surface portion 63b is inclined at approximately the same angle as the inclination of the vertical support 33 and the leg support cover 39. Both front and rear ends of the third outer wall surface portion 63b are close to and along the fourth support cover surface portion 39d on the outer left-to-right side of the leg support cover 39. A third folded portion 63f extends inward (toward the upper horizontal frame 35) in a substantially horizontal position from the tip of the third outer wall surface portion 63b.

[0078] 6, 14, etc., a pair of front and rear third locking claws 63g extend inward in the left-right direction from the tip (the inner edge in the left-right direction) of the third folded portion 63f. Each third locking claw 63g has a crank shape that extends slightly inward in the left-right direction from the third folded portion 63f, then bends upward and extends further inward in the left-right direction, and its tip side is configured to hook onto the top surface portion 35c of the upper horizontal frame 35. As shown in FIG. 14, a recess 200 is formed in the underside of the tabletop 2 at a position corresponding to the third locking claw 63g, allowing the third locking claw 63g to be inserted between the underside of the tabletop 2 and the reinforcing frame 36 from the outside in the left-right direction.

[0079] As shown in Figures 6, 9, 14, etc., a pair of front and rear third upright portions 63d rise from the inner edge of the third bottom portion 63a in the left-right direction, and third mounting surface portions 63c extend substantially horizontally inward in the left-right direction from the tips of the third upright portions 63d. Screw insertion holes 63e are formed in the third mounting surface portions 63c, penetrating them in the up-down direction. The third mounting surface portions 63c are disposed in a position that does not interfere with the reinforcing frame 36 and the upper reinforcing plate 37. Threaded holes for leg cover nut members 9 are exposed on the underside of the top plate 2 at positions corresponding to the screw insertion holes 63e.

[0080] Next, a procedure for attaching the leg covers 6 to the tabletop 2 to which the legs 3 have already been attached will be described. The leg covers 6 are attached to the tabletop 2 after the leg support covers 39 are attached to the vertical supports 33 of the legs 3.

[0081] First, the third leg cover 63 is attached to the underside of the tabletop 2. The pair of front and rear third locking claws 63g of the third leg cover 63 are inserted between the pair of front and rear recesses 200 of the tabletop 2 and the upper horizontal frame 35, and the third locking claws 63g are locked to the upper surface 35c of the upper horizontal frame 35. By inserting the front and rear third locking claws 63g into the front and rear recesses 200, the third leg cover 63 can be roughly aligned to the attachment position on the underside of the tabletop 2. The leg cover fixing screws 64 are screwed into the leg cover nut members 9 embedded in the underside of the tabletop 2 corresponding to the screw insertion holes 63e, through the screw insertion holes 63e, and the third attachment surface portions 63c are fixed to the underside of the tabletop 2.

[0082] Next, the first and second leg covers 61, 62 are attached to the underside of the tabletop 2. With the mounting surfaces 61c, 62c of the leg covers 61, 62 facing upward, the bottoms 61a, 62a are brought close to the bottom surface 36a of the reinforcing frame 36, and the ferromagnetic leg covers 61, 62 are magnetically attached and temporarily held in place by a permanent magnet provided in the locking mechanism 38 fixed to the bottom surface 36a. The screw insertion holes 61e, 62e are aligned with the leg cover nut members 9 embedded in the underside of the tabletop 2. At this time, since the leg covers 61, 62 are magnetically attached to the locking mechanism 38, they can be easily slid, making it easy to align the screw insertion holes 61e, 62e. Leg cover fixing screws 64 are screwed into the leg cover nut members 9 through the screw insertion holes 61e, 62e to secure the mounting surfaces 61c, 62c to the underside of the tabletop 2. This completes the installation of the leg cover 6. The order in which the leg covers 61 and 62 are installed is not particularly important.

[0083] When the first, second, and third leg covers 61, 62, and 63 are attached to the underside of the table top 2, the upper horizontal frame 35, the reinforcing frame 36, and the upper reinforcing plate 37 are covered with the leg covers 6, improving the appearance of the table 1. In addition, the leg covers 6 also cover the leg body fixing screws 8 for fastening the leg body 31 to the underside of the table top 2, the support cover fixing screws 336 for fixing the leg support covers 39 to the vertical supports 33, and the upper cutout portions 395 for pulling the wiring cables 100 into the leg support covers 39, so the area around the legs 3 is neat and tidy, resulting in a very attractive appearance.

[0084] Furthermore, the leg cover fixing screws 64 that fix the third leg cover 63 to the underside of the tabletop 2 are covered by the leg cover 6. Also, the leg cover fixing screws 64 that fix the first and second leg covers 61, 62 to the underside of the tabletop 2 are hidden by the outer peripheral wall portions 61d, 62d and cannot be seen unless viewed from below. This allows for the construction of an attractive-looking leg body 3 with no exposed mounting screws at all.

[0085] As shown in Figures 6, 14, 15, etc., in the table 1 of this embodiment, the leg covers 6 are configured to be usable as cable receptacles, and an outlet 103 can be placed on the first and second leg covers 61, 62. The wiring cable 100 extending from the outlet 103 is drawn into the wiring space 201 within the leg support cover 39 through an upper cutout 395 (see also Figure 9, etc.) provided in the upper part of the leg support cover 39, and is drawn out onto the floor from the lower part of the leg support cover 39. The attachment plug 102 of the wiring cable 101 drawn out from the outlet unit 4 on the upper surface of the tabletop 2 to the tabletop 2 and drawn into the leg cover 6 is inserted into the outlet 103. This allows power to be supplied to the outlet unit 4 without exposing the wiring cables 100, 101, the attachment plug 102, or the outlet 103.

[0086] [Top board configuration] Next, we will explain the configuration of the table top 2. As shown in Figures 1 to 5, the table top 2 has two central table top members 2A connected at the front and rear, and edge table top members 2B connected to the left and right edges of each central table top member 2A, and is configured by connecting a total of six table top members.

[0087] As shown in the bottom views of Figures 20 and 21 and the separated perspective view of Figure 22, the tabletop members 2A and 2B include a tabletop frame 14 formed by arranging four metal tabletop frame members 11, 12, 13, 13 in a frame shape, a honeycomb-shaped core material 16 disposed within the frame of the tabletop frame 14, a tabletop core material 19 having a pair of upper and lower metal plates 17, 18 bonded to the upper and lower surfaces of the tabletop frame 14 and the core material 16, and decorative panels 21, 22 bonded to the upper and lower surfaces of the tabletop core material 19. The tabletop members 2A and 2B are lightweight tabletops with internal cavities.

[0088] 24 and 26, a plurality of recessed grooves 23 extending in the longitudinal direction of each of the tabletop frame members 11, 12, and 13 are formed on the upper and lower surfaces of the tabletop frame members 11, 12, and 13 that make up the upper and lower surfaces of the tabletop frame 14. In addition, deep slits 24 are formed on the upper and lower surfaces of the tabletop frame members 11, 12, and 13, respectively, and are deeper than the recessed grooves 23 and closer to the outer periphery of the tabletop.

[0089] Wooden members 25, 26, and 27 are arranged within the frame of the top panel frame 14 of the top panel members 2A and 2B, into which screw-type or hammer-in type embedded nut members 7, such as countersunk nuts, can be embedded. The wooden members 25, 26, and 27 are formed of a wooden material such as medium-density fiberboard (MDF). The top panel member 2B, to which the legs 3 are attached, has embedded embedded nut members 7, with screw holes exposed on its underside (the underside of the top panel), in the wooden members 25 and 26. In this embodiment, the wooden members 25, 26, and 27 embedded in the top panel member 2B constitute nut holding members.

[0090] The table top 2 has a configuration in which table top frame materials 12 of a pair of table top members 2A and 2A or 2B and 2B can be butted together and connected together. Also, the table top frame materials 13 of the table top members 2A and 2B can be butted together and connected together.

[0091] 23 to 26, at least one of the four tabletop frame members (tabletop frame members 12, 13 in this embodiment) has bolt insertion holes 12c, 13c that penetrate between frame outer wall surface portions 12a, 13a and frame inner wall surface portions 12b, 13b. One end of connecting bolt member 81, which has threaded portions 81a at both ends, can be inserted into bolt insertion hole 12c, 13c from the frame outer wall surface portion 12a, 13a side.

[0092] The metal plate 18 and decorative plate 22 on the lower surface side are provided with nut insertion holes 28 that open to correspond to the opening positions of the bolt insertion holes 12c, 13c in the frame inner wall surface portions 12b, 13b. A connecting nut member 82 that screws onto the threaded portion 81a of the connecting bolt member 81 that protrudes into the frame of the top plate frame body 14 can be inserted into the frame of the top plate frame body through the nut insertion hole 28.

[0093] Between the upper and lower metal plates 17, 18 is interposed a peripheral wall forming member that surrounds the portion where the threaded portion 81a of the connecting bolt member 81 inserted into the nut insertion hole 28 protrudes within the frame of the top plate frame 14. In this embodiment, the peripheral wall forming member is made up of wooden members 25, 26 that have cutout recesses 29 that surround the portion where the threaded portion 81a of the connecting bolt member 81 protrudes.

[0094] In the present embodiment, the tabletop members 2A and 2B are formed by bonding a pair of upper and lower metal plates 17 and 18 to the upper and lower surfaces of the tabletop frame members 11, 12, and 34 and the upper and lower surfaces of the core member 16 to form the tabletop core member 19. This ensures a large bonding area, dispersing the force applied to the tabletop members 2A and 2B, resulting in lightweight yet highly rigid tabletop members 2A and 2B. Furthermore, a pair of upper and lower decorative plates 21 and 22 are bonded to the upper and lower surfaces of the tabletop core member 19, ensuring the decorativeness of the tabletop surface and further improving the rigidity of the tabletop members 2A and 2B. Note that a tabletop having a similar configuration to the tabletop members 2A and 2B can also be used as a standalone lightweight tabletop.

[0095] Furthermore, by providing multiple grooves 23 on the upper and lower surfaces of the tabletop frame materials 11, 12, 13, the tabletop members 2A, 2B can increase the bonding area between the tabletop frame materials 11, 12, 13 and the metal plates 17, 18, improving the bonding strength and rigidity of the tabletop members 2A, 2B. Furthermore, by providing deep slits 24 closer to the outer periphery of the tabletop than the grooves 23, excess adhesive can be contained in the deep slits 24 when bonding the tabletop frame materials 11, 12, 13 and the metal plates 17, 18, preventing the adhesive from spilling out and the deep slits 24 contributing to increasing the bonding area between the tabletop frame materials 11, 12, 13 and the metal plates 17, 18.

[0096] Nut holding members (wooden members 25, 26) into which embedded nut members 7 for connecting the legs 3 of the table 1 and the like are embedded are embedded inside the tabletop members 2A, 2B, so that the nut members can be embedded in the tabletop members 2A, 2B more easily and at lower cost than in a configuration in which the nut members are fixed to the metal tabletop frame members 11, 12, 13 by welding or the like.

[0097] Furthermore, when connecting a pair of tabletop members 2A, 2B, 2A, 2A, or 2B, 2B, first, the outer wall surfaces 12a or 13a of the frame members are butted together while the connecting bolt members 81 are inserted into the bolt insertion holes 12c or 13c of the tabletop frame members 12 or 13. Then, the tabletop frame members 14 of the pair of tabletop members (lightweight tabletops) can be connected to each other by screwing connecting nut members 82 inserted into the tabletop members 2A or 2B through the nut insertion holes 28 into the threaded portions 81a of the connecting bolt members 81 protruding into the frame of each tabletop frame 14. Then, by appropriately tightening the connecting nut members 82, the pair of tabletop members 2A, 2B, 2A, 2A, or 2B, 2B can be firmly connected to each other.

[0098] In this embodiment, by connecting multiple tabletop members 2A, 2B, a large tabletop 2 can be formed that can be assembled at the installation site of the table 1. This makes it possible to form a tabletop 2 of a size that would be difficult to manufacture or transport as a single piece, and also makes transportation easier. Furthermore, since each tabletop member 2A, 2B (each lightweight tabletop) is lightweight and highly rigid, a large tabletop 2 that is lightweight and highly rigid can be formed by firmly connecting these tabletop members 2A, 2B. Furthermore, since the nut insertion holes 28 are not exposed on the top surface of the tabletop 2 (tabletop members 2A, 2B), a connected lightweight tabletop with a good appearance can be formed.

[0099] Furthermore, by providing wooden members 25, 26 (an example of a peripheral wall forming member) having a notched recess 29 that surrounds the location where the threaded portion 81a of the connecting bolt member 81 protrudes, after a pair of tabletop members 2A, 2B etc. are butted together, it is possible to prevent the connecting bolt member 81 from slipping out into the frame of the tabletop frame 14 before the nut members 82 are screwed onto both ends of the connecting bolt member 81, or to prevent the connecting nut member 82 inserted into the inside of the tabletop member 2A or 2B from rolling to a location that the worker's fingers cannot reach, thereby improving workability.

[0100] 23, 25, etc., at least one of the four tabletop frame members 11, 12, 13, 13 (in this embodiment, the three tabletop frame members 12, 13, 13) has outer wall grooves 12g, 13g in the frame material outer wall surface portions 12a, 13a, into which a connection position adjustment member 89 can be inserted. When connecting a pair of tabletop members 2A, 2B, 2A, 2A together, or 2B, 2B together, the frame material outer wall surface portions 12a, 12a or 13a, 13a having the outer wall grooves 12g or 13g are butted together, and the connection position adjustment member 89 can be press-fitted across the opposing outer wall grooves 12g, 12g or 13g, 13g.

[0101] As a result, when a pair of tabletop members 2A, 2B, etc. are butted together, the connecting position adjustment member 89 generates friction between the tabletop members 2A, 2B, etc., which contributes to delicate alignment of the tabletop members 2A, 2B, etc. This improves the ease and efficiency of the alignment work of the tabletop members 2A, 2B, etc.

[0102] As shown in Figures 24 and 25, at least one of the four tabletop frame members 11, 12, 13, and 14 (four in this embodiment) is formed from an aluminum extrusion. The tabletop frame members 11 and 12 each have a connecting pin holding portion 30 that extends in the longitudinal direction and opens at an end face. The connecting pin holding portion 30 opens at a location near the end in the longitudinal direction (in this embodiment, the front-to-rear direction) of at least one end face (in this embodiment, the left-to-right end face) of the tabletop frame 14. As shown in Figure 25, when connecting a pair of tabletop members 2A and 2B, the end faces where the connecting pin holding portions 30 open are butted against each other, and a connecting pin 88 can be inserted across the opposing connecting pin holding portions 30.

[0103] This allows the connecting pin 88 to be positioned across the top plate members 2A and 2B near the longitudinal end of the joint when the top plate members 2A and 2B are connected, thereby improving the connecting strength between the top plate members 2A and 2B.

[0104] As shown in Figures 22, 24(B), etc., in the tabletop members 2A and 2B, at least one of the four tabletop frame members 11, 12, 13, 13 (in this embodiment, the outer tabletop frame member 11) may have a convex rib portion 11g extending longitudinally on the outer wall surface portion 11a of the frame member, and an edge member 86 having a concave groove 86a into which the convex rib portion 11g fits may be attached to the outer wall surface portion 11a of the frame member.

[0105] As a result, the edge member 86 is supported by the convex portions 11a of the tabletop frame material 11 fitted into the concave grooves 86a against vertical loads, and the widthwise thickness of the edge member 86 (the thickness in the direction protruding from the frame material outer wall surface 11a) can be increased while preventing the edge member 86 from falling off, peeling off, or being damaged. Also, in this embodiment, the edge member 86 is adhesively fixed to the frame material outer wall surface portion 11a, and the adhesive area between the edge member 86 and the tabletop frame material 11 can be increased, thereby improving the adhesive strength.

[0106] [Detailed configuration of each part of the top plate] Next, the details of each part of the top plate member 2B will be described. The basic structure of the top plate member 2A is almost the same as that of the top plate member 2B except that the intermediate wood member 27 is not provided inside, so the configuration of the top plate member 2B will be mainly described.

[0107] 20 to 22, the edge top panel member 2B has a top panel frame body 14 formed by a pair of outer and inner top panel frame members 11 and 12 arranged in a frame shape, and a pair of left and right side top panel frame members 13. Each of the top panel frame members 11, 12, and 13 is made of metal, and in this embodiment is formed from an extruded aluminum material with a horizontally long, approximately rectangular cross-sectional outline.

[0108] The outer tabletop frame member 11 is disposed extending in the left-right direction on the front-to-back edge side of the tabletop 2. The inner tabletop frame member 12 extends in the left-right direction and is disposed parallel to the outer tabletop frame member 11, near the center of the tabletop 2 in the front-to-back direction. The left and right side tabletop frame members 13 are disposed extending in the front-to-back direction, with both front and rear ends abutting or adjacent to portions near the left-to-right ends of the frame inner wall surface portions 11b and 12b of the tabletop frame member 11 and 12.

[0109] Within the tabletop frame 14, an inner wooden member 25 extends in the front-to-rear direction along the inner wall surface 12b of the inner tabletop frame member 12. Furthermore, a pair of left and right horizontal wooden members 26 and an intermediate wooden member 27 extend parallel to each other in the front-to-rear direction between the inner wooden member 25 and the horizontal tabletop frame members 13. In this embodiment, the wooden members 25, 26, and 27 are made of MDF with a substantially rectangular cross section. The material of the wooden members 25, 26, and 27 is not limited to MDF, and any material may be used as long as it allows for the embedding of screw-type or hammer-in type embedded nut members 7.

[0110] The left and right ends of the inner wooden member 25 abut against or are close to the inner wall surface 13b of the horizontal top frame member 13. The front and rear ends of the horizontal wooden member 26 abut against or are close to the left and right ends of the inner wooden member 25 or the left and right ends of the inner wall surface 11b of the outer top frame member 11. The front and rear ends of the intermediate wooden member 27 abut against or are close to the middle left and right parts of the inner wooden member 25 or the middle left and right parts of the inner wall surface 11b of the frame member.

[0111] A honeycomb-shaped core material 16 with many openings penetrating vertically is disposed in the space surrounded by the wooden members 25, 26, 27 and the outer top frame member 11. The core material 16 is, for example, a paper honeycomb, but it may also be a metal honeycomb such as an aluminum honeycomb. The top frame members 11, 12, 13, the wooden members 25, 26, 27, and the core material 16 all have approximately the same thickness.

[0112] A pair of upper and lower metal plates 17, 18 are bonded with adhesive 85 to the upper and lower frame material portions 11d, 12d, 13d and lower frame material portions 11e, 12e, 13e of the tabletop frame members 11, 12, 13 that make up the upper and lower surfaces of the tabletop frame 14 and to the upper and lower surfaces of the core material 16 to form the tabletop core material 19. The upper metal plate 17 and the lower metal plate 18 are formed, for example, from aluminum plates. Although not shown in detail, adhesive 85 is also present between the upper and lower surfaces of the wood members 25, 26, 27 and the metal plates 17, 18.

[0113] 24 and 26, a plurality of grooves 23 extending in the longitudinal direction of each tabletop frame member 11, 12, 13 are formed in the frame upper surface portions 11d, 12d, 13d and the frame lower surface portions 11e, 12e, 13e of the tabletop frame members 11, 12, 13. Adhesive 85 accumulates in the grooves 23, increasing the adhesive strength between the tabletop frame members 11, 12, 13 and the metal plates 17, 18. A plurality of inner wall grooves 23b extending in the longitudinal direction are formed in the frame inner wall surface portions 11b, 12b, 13b of the tabletop frame members 11, 12, 13, and adhesive may be interposed between the frame inner wall surface portions 11b, 12b, 13b and the wooden members 25, 26, 27, thereby increasing the adhesive strength therebetween by the adhesive accumulated in the inner wall grooves 23b.

[0114] As shown in FIG. 24, deep slits 24 are formed on the upper surface portions 11d, 12d and the lower surface portions 11e, 12e of the outer and inner top-panel frame members 11, 12, respectively, on the outer periphery (outside in the front-to-back direction) of the top panel members 2A, 2B, deeper than the recessed grooves 23. Ribs 11f, 12f extend along the longitudinal direction (left-right direction) of the top panel frame members 11, 12 and protrude outward in the vertical direction from the edges of the outer periphery (outside in the front-to-back direction) of the top panel members 2A, 2B on the upper surface portions 11d, 12d and the lower surface portions 11e, 12e. The protruding height of the ribs 11f, 12f is approximately the same as the thickness of the metal plates 17, 18. The ribs 11f, 12f are erected further outward in the front-to-back direction than the deep slits 24.

[0115] As shown in Figure 26, deep slits 24a that are deeper than the grooves 23 are formed in the upper surface 13d and lower surface 13e of the frame material of the horizontal top board frame material 13, in areas closer to the front and rear edges (closer to the wall portions 13a and 13b) than the grooves 23.

[0116] When bonding the tabletop frame materials 11, 12, 13 and the metal plates 17, 18, excess adhesive 85 can be contained in the deep slits 24, 24a, preventing the adhesive 85 from spilling out and contributing to an increase in the bonding area between the tabletop frame materials 11, 12, 13 and the metal plates 17, 18 (i.e., improved bonding strength).

[0117] A pair of upper and lower decorative panels 21 and 22 are bonded to the upper and lower surfaces of the tabletop core material 19 (the upper surface of the upper metal plate 17 and the lower surface of the lower metal plate 18) with an adhesive (not shown). In this embodiment, the decorative panels 21, 22 have first decorative panels 21a, 22a and second decorative panels 21b, 22b stacked in order from the metal plate 17, 18 side. For example, the first decorative panels 21a, 22a are formed from MDF, and the second decorative panels 21b, 22b that form the upper and lower surfaces of the tabletop members 2A, 2B are formed from a veneer having a wood grain.

[0118] As shown in Figures 22 to 24, a convex rib portion 11g extending in the longitudinal direction (left-right direction) protrudes in the front-rear direction from the vertical center of the frame outer wall surface portion 11a of the outer top-plate frame material 11. An edge member 86 extending in the left-right direction is bonded with adhesive to the end faces of the frame outer wall surface portion 11a and the decorative panels 21, 22. The edge member 86 is formed, for example, from wood cut from the surface of a natural log, has a substantially trapezoidal cross section, and has grooves 86a into which the convex rib portion 11g fits on the surface that is bonded to the frame outer wall surface portion 11a. A large number of outer wall grooves 23a extending in the longitudinal direction are formed on the outer wall surfaces of the frame outer wall surface portion 11a and the convex rib portions 11g, and adhesive accumulates in the grooves 23a, thereby increasing the adhesive strength between the outer top-plate frame material 11 and the edge member 86.

[0119] As can be seen from Figures 1, 2, 5, 21, etc., the outer edges of the edge members 86 extending in the left-right direction are undulated in the front-to-rear direction. For example, if the edge members 86 are lumber cut from the surface of a log, the undulations will be irregular, and the width dimensions of the longitudinal ends of the edge members 86 will vary depending on the material. Therefore, in this embodiment, the edge members 86 adjacent in the left-to-right direction at the front and rear edges of the table top 2 in a plan view are processed so that the surfaces are continuous (flush) at their joints. For convenience, each edge member 86 is shown in Figures 1, 5, etc. as having the same shape.

[0120] 22, 23, 34, etc., edge members 87 are attached to the outer left and right end faces of the edge top member 2B. The edge members 87 are formed, for example, from end grain decorative boards with annual rings extracted from logs, and are adhered with adhesive to the outer wall surface 13a of the frame material of the horizontal top board frame 13 and the outer left and right end faces of the top board frame materials 11, 12.

[0121] As shown in Figure 34, second decorative panel corners 21c, 22c are provided at the outer edges in the left-right direction of second decorative panels 21b, 22b, which are made of single panels. Second decorative panel corners 21c, 22c protrude outward in the left-right direction beyond the edges of frame outer wall surface portion 13a and first decorative panels 21a, 22a. The lower surface of second decorative panel corner 21c is bonded to the upper end surface of edge member 87, and the upper surface of second decorative panel corner 22c is bonded to the lower end surface of edge member 87. By rounding the edges of second decorative panels 21b, 22b and not exposing the end surface of edge member 87, the joint between second decorative panels 21b, 22b, each having a wood grain, and edge member 87 can be made less noticeable.

[0122] To increase the adhesive strength between the edge member 87 and the horizontal top frame 13, a longitudinally extending groove may be formed in the outer wall 13a of the frame, a wooden member such as MDF may be fitted and secured into the groove, one surface of the wooden member may be made substantially flush with the outer wall 13a of the frame, and then the edge member 87 may be adhesively fixed to the wooden member and the outer wall 13a of the frame. This type of adhesive structure can also be applied to the adhesive structure between the edge member 86 and the outer top frame 11. Needless to say, instead of natural wood, the edge members 86, 87, and the decorative panels 21, 22 may be made of resin decorative panels such as melamine decorative panels.

[0123] 24, 25, etc., two internal ribs 11h that connect frame upper surface 11d and frame lower surface 11e, and a substantially C-shaped connecting pin holding portion 30 provided on the inner wall of frame inner wall surface 11b and the inner wall of ridge portion 11g are formed to extend in the longitudinal direction inside outer top plate frame material 11. Note that the cross-sectional shape of connecting pin holding portion 30 may be a shape other than a substantially C-shape, and can be changed as appropriate to match the cross-sectional shape of connecting pin 88 to be inserted into connecting pin holding portion 30.

[0124] 23 to 25, an outer wall recessed groove 12g is formed extending in the longitudinal direction in the central region between the top and bottom of the frame outer wall surface 12a of the inner top-plate frame material 12. Inside the inner top-plate frame material 12, one internal rib 12h is formed extending in the longitudinal direction, connecting the frame upper surface 12d and the frame lower surface 12e, and approximately C-shaped connecting pin holders 30 are provided on the inner walls of the frame outer wall surface 12a and the frame inner wall surface 12b, respectively.

[0125] As shown in Figures 23 and 24(A), the bolt insertion holes 12c that penetrate between the frame outer wall surface portion 12a and the frame inner wall surface portion 12b also penetrate the internal rib portion 12h. Multiple (eight in this embodiment) bolt insertion holes 12c are arranged at intervals in the longitudinal direction of the inner top plate frame material 12. Small recessed steps extending in the longitudinal direction are formed in the upper and lower central portions of the outer surface of the frame outer wall surface portion 12a.

[0126] 23, 25, etc., a wiring cutout 44 for inserting a support member 42 of the outlet unit 4 is formed on the edge of the inner top panel frame material 12 where the top panel members 2B, 2B or 2A, 2A are connected. The wiring cutout 44 has a substantially semicircular shape cut out from the upper surface to the lower surface of the top panel members 2A, 2B in a plan view, and is configured to have a substantially circular shape when the top panel members 2B, 2B or 2A, 2A are butted together.

[0127] As shown in Figure 23 etc., the frame outer wall surface 12a of the inner top plate frame material 12 is exposed at the inner end face in the front-to-rear direction of the edge top plate members 2B (the end face where the edge top plate members 2B are connected to each other), and the bolt insertion holes 12c, outer wall grooves 12g, and wiring cutouts 44 are also exposed. As can be seen from Figure 21 etc., the frame outer wall surface 12a, bolt insertion holes 12c, outer wall grooves 12g, and wiring cutouts 44 are exposed at the inner end face in the front-to-rear direction of the central top plate member 2A.

[0128] 25 and 26, an outer wall recessed groove 13g is formed extending in the longitudinal direction in the central portion of the upper and lower sides of the outer wall surface 13a of the horizontal top-board frame 13. An internal rib 13h is formed inside the horizontal top-board frame 13 and extends in the longitudinal direction, connecting the upper surface 13d and the lower surface 13e of the frame.

[0129] The bolt insertion holes 13c that penetrate between the outer wall surface portion 13a and the inner wall surface portion 13b of the horizontal top plate frame material 13 also penetrate the internal rib portion 13h. Multiple (three in this embodiment) bolt insertion holes 13c are arranged at intervals in the longitudinal direction of the horizontal top plate frame material 13. In addition, small recessed steps extending in the longitudinal direction are formed in the upper and lower central portions of the outer surface of the frame material outer wall surface portion 13a.

[0130] As shown in Figure 25 and other figures, the frame outer wall surface 13a of the side top frame member 13 and the inner left-right end surfaces of the outer top frame member 11 and the inner top frame member 12 are exposed at the inner left-right end surface of the edge top plate member 2B (the end surface that connects to the central top plate member 2A), and also the bolt insertion hole 13c, the outer wall groove 13g, and the connecting pin holding portion 30. As can be seen from Figure 21 and other figures, the frame outer wall surface 13a, the bolt insertion hole 13c, the outer wall groove 13g, the longitudinal end surfaces of the top plate frame members 11 and 12, and the connecting pin holding portion 30 are exposed at the end surfaces on both the left and right sides of the central top plate member 2A.

[0131] Next, as shown in Figures 23 and 24(A), to connect the edge top panel members 2B, 2B, a connecting bolt member 81 is inserted into each bolt insertion hole 12c of one edge top panel member 2B. The threaded portion 81a of the connecting bolt member 81 passes through the inner top panel frame member 12 and reaches the notched recess 29 of the inner wooden member 25. The inner wooden member 25 regulates the insertion depth of the connecting bolt member 81. Additionally, multiple connecting position adjustment members 89 are press-fit into the outer wall recessed grooves 12g. The connecting position adjustment members 89 are, for example, oval-shaped wooden members that are deformable under pressure and generate friction between the abutting edge top panel members 2B, 2B, contributing to delicate alignment. This allows for accurate alignment of the surfaces of the edge top panel members 2B, 2B. Therefore, it is possible to prevent a step from occurring at the joint portion of the tabletop members 2B, 2B, and to solve the problems of appearance quality and snagging during use due to misalignment. Note that the shape and material of the connecting position adjustment member 89 are not particularly limited as long as it can be press-fitted into the outer wall grooves 12g, 13g and generates friction between the connecting tabletop members.

[0132] When the inner top frame materials 12 of the edge top members 2B, 2B are butted together, the threaded portions 81a of the connecting bolt members 81 protrude into the notched recesses 29 provided in the inner wooden members 25 of each top member 2B. A metal washer 83 is inserted into the notched recesses 29 through the nut insertion holes 28 and fitted onto the end of the connecting bolt members 81, and a connecting nut member 82 is inserted into the notched recesses 29 and screwed onto the threaded portions 81a of the connecting bolt members 81.

[0133] The top panel members 2B are firmly connected by tightening with an appropriate tightening force a pair of connecting nut members 82 threaded onto the threaded portions 81a at both ends of connecting bolt members 81 that pass through the inner top panel frame members 12 of the front and rear edge top panel members 2B. In this way, high connection strength is achieved by directly pressing the metal washers 83 against the metal inner top panel frame member 12 (an aluminum extrusion in this embodiment). The same applies to the connection structure between the side top panel frame members 13, which will be described later. The front and rear central top panel members 2A can also be connected using a similar procedure.

[0134] Next, as shown in Figures 25 and 26, the edge top panel members 2B, 2B and the central top panel members 2A, 2A, which are connected in the front and rear, are connected. First, for the top panel member 2A or 2B, connecting bolt members 81 are inserted into each bolt insertion hole 13c, connecting pins 88 are inserted into each connecting pin holder 30, and multiple connecting position adjustment members 89 are press-fit into the outer wall recessed grooves 13g. The connecting pins 88 are made of metal and are inserted two by two into positions near the front and rear edges of the top panel members 2A, 2B, contributing to ensuring the connecting strength at the positions near the front and rear edges of the top panel members 2A, 2B (the positions near the front and rear edges of the top panel 2 and the central position in the front-to-rear direction).

[0135] When the side top frame members 13 of the tabletop members 2A and 2B are butted together, the threaded portions 81a of the connecting bolt members 81 protrude into the notched recesses 29 provided in the horizontal wooden members 26 of each tabletop member 2A and 2B. Similar to the above-described operation for connecting the edge tabletop members 2B, a washer 83 and a connecting nut member 82 are inserted into the notched recesses 29 through the nut insertion holes 28, the washer 83 is inserted onto the threaded portions 81a of the connecting bolt member 81, and the connecting nut member 82 is then screwed in. Then, a pair of connecting nut members 82 are screwed onto the threaded portions 81a at both ends of the connecting bolt member 81 that passes through the side top frame members 13 of the tabletop members 2A and 2B, and tightened with an appropriate tightening force. This firmly connects the left and right tabletop members 2A and 2B.

[0136] By connecting the front-to-back edge top members 2B, 2B to the left and right sides of the front-to-back central top members 2A, 2A, a large yet lightweight and highly rigid top 2 can be obtained, as shown in Figures 1 to 4. The top 2 has decorative panels 21a, 22a made of single sheets, and edge members 86 and end members 87 extracted from logs. Although it is an industrial product, it changes over time like solid wood and has the natural texture of wood. Note that the procedure for connecting the top members 2A, 2B is not limited to the above. For example, it is also possible to first connect the left and right top members 2A, 2B, and then connect the connected left and right top members 2A, 2B together front to back.

[0137] 24, 26, etc., the nut insertion holes 28 opening on the underside of the top plate 2 are covered with a removable cover member 84. The cover member 84 has a pair of claws 84a that can elastically deform inward, and the claws 84a are hooked onto a step 90 (see FIG. 24(B)) provided at the boundary between the notched recess 29 and the lower metal plate 18, thereby allowing the cover member 84 to be detachably attached to the underside of the top plate members 2A, 2B.

[0138] [Wiring structure overview] Next, the wiring structure of the table 1 will be described with reference to Figures 27 to 33. Referring also to Figures 1 to 4, as described above, the outlet units 4 are disposed on the upper surface of the tabletop 2. Each outlet unit 4 includes a bar member 41, a pair of left and right support members 42, and a pair of left and right outlets 43. Each outlet 43 includes a plurality of plug sockets 46 (four in this embodiment) exposed on the upper surface of the bar member 41. Both left and right ends of the bar members 41, each made of a metal pipe, are closed with cap members 41a.

[0139] 28, 29, etc., the left and right outlets 43 are electrically connected within the bar member 41, and a wiring cable 101 extending from one of the outlets 43 passes through the support member 42 and is drawn out to the underside of the tabletop 2. An attachment plug 105 provided at the tip of a wiring cable 104 extending from the other outlet 43 is connected within the bar member 41 to a plug socket (not shown) provided on the end face of the one of the outlets 43. In other words, when the wiring cable 101 is connected to a power source, power can be supplied from the plug socket 46 of each outlet 43.

[0140] Figure 27 is a perspective view, viewed obliquely from below, showing the connection points of the central top panel member 2A and the edge top panel members 2B of the top panel 2, along with the wiring hole 45. As shown in Figure 27, the front and rear wiring cutouts 44 come together to form the wiring hole 45 at the connection joint points between the top panel members 2A, 2A or 2B, 2B. The wiring hole 45 penetrates the top panel 2 in the vertical direction. A wiring accommodating groove 47 is formed on the underside of the top panel 2, extending from the wiring hole 45 toward the reinforcing frame 36 of the leg body 3.

[0141] 30 to 32, the table 1 is configured such that a cable cover 48 that covers the opening of the wire accommodating groove 47 is detachably attached to the underside of the top plate 2. A cover underside 48a of the cable cover 48 is disposed substantially flush with the underside of the top plate 2 (the undersides of the top plate members 2A and 2B).

[0142] 2, 3, etc., the leg body 3 is provided with a leg cover 6 that can draw in the wiring cable 101 between it and the underside of the tabletop 2. As shown in Figure 32, the end of the wiring accommodation groove 47 opposite to the wiring hole 45 is led up to the top of the leg cover 6.

[0143] By guiding the wiring cable 101 to the leg 3 along the wiring accommodation groove 47 provided on the underside of the table top 2, the routing of the wiring on the underside of the table top 2 can be made inconspicuous. Furthermore, because the wiring accommodation groove 47 is exposed on the underside of the table top 2, the work of routing the wiring cable 101 on the underside of the table top 2 (the work of guiding the wiring cable 101 along the wiring accommodation groove 47) can be easily performed. Furthermore, since there is no need to provide a wiring support member such as a wiring receiver or wiring duct on the underside of the table top 2, the appearance of the table 1 when viewed from the side can be improved. In particular, the appearance can be improved in a table 1 that does not have a beam member on the underside of the table top 2, as in this embodiment.

[0144] As described above, by covering the wiring accommodation groove 47 with the cable cover 48, it is possible to reliably prevent the wiring cable 101 from hanging down and becoming exposed. In addition, by arranging the cover lower surface 48a so that it is substantially flush with the lower surface of the table top 2, it is possible to make the presence of the cable cover 48 less noticeable when the table 1 is viewed from the side, and to achieve a clean lower surface of the table top 2 with few irregularities when the table top 2 is viewed obliquely from below.

[0145] Furthermore, by forming the wiring accommodating groove 47 from the wiring hole 45 to above the leg cover 6, the wiring cable 101 can be guided from the wiring accommodating groove 47 into the leg cover 6 without being exposed. This makes it possible to realize a wiring routing structure that looks very good, in which the presence of the wiring cable 101 on the underside of the table top 2 is not felt.

[0146] In addition, the top plate 2 includes a configuration in which multiple top plate members 2A, 2A are butted together and connected, and the wiring hole 45 and the wiring accommodating groove 47 are formed in the joint portion (joint portion) between the top plate members 2A, 2A and are continuous.

[0147] This allows the wiring holes 45 and the wire-accommodating grooves 47 to be formed without drilling through-holes for the wiring holes 45 through the top and bottom flat surfaces of the top plate 2 or countersinking a concave groove in the flat lower surface of the top plate 2 (for example, top plate members 2A and 2B). Furthermore, since cutting chips (and cutting oil) do not scatter inside the top plate member when forming the wiring holes 45 and the wire-accommodating grooves 47 by cutting, this method is suitable for forming the wiring holes 45 and the wire-accommodating grooves 47 in top plate members 2A and 2B that have a hollow internal structure. However, the configuration in which wiring holes and wire-accommodating grooves are provided in the top plate can also be applied to top plate members that do not have a hollow internal structure.

[0148] [Detailed wiring structure] Next, we will explain the details of the wiring structure of the table 1. As can be seen from Figure 1 etc., wiring holes 45 into which the support members 42 of the outlet unit 4 are inserted are provided at two locations each at the connection points between the top plate members 2A, 2A and at the connection points between the top plate members 2A, 2A.

[0149] 27 to 32, a donut-shaped hole cover 49 is fitted and fixed to the midpoint of support member 42. The lower end of support member 42 inserted into wiring hole 45 from the upper surface side of top plate 2 is disposed near the bottom of wiring hole 45 with hole cover 49 abutting the upper surface of top plate member 2A or 2B. A pair of left and right wiring insertion slits 42a are formed in the lower end of support member 42 by cutting upward from the lower end.

[0150] An outlet fixing nut member 50 is fixed inside the lower end of the support member 42 at a position shallower than the upward cut depth of the wiring insertion slit 42a (towards the lower end of the slit 42a). The upper part of the wiring insertion slit 42a opens to the inside and outside of the support member 42, allowing the wiring cable 101 to be inserted therethrough. An outlet fixing screw 52 is screwed into the outlet fixing nut member 50 via a metal plate-like outlet fixing plate 51, and the top plate member 2A or 2B is sandwiched between the hole cover 49 and the plate 51 from above and below, thereby fixing the outlet unit 4 so that it cannot be removed.

[0151] Lower decorative plate 22, which forms the underside of tabletop members 2A and 2B, is provided with plate insertion recess 53, which is formed with a planar size larger than wiring hole 45 and is capable of accommodating outlet fixing plate 51. Plate insertion recess 53 is connected to the lower part of wiring hole 45. With tabletop member 2A or 2B sandwiched between hole cover 49 and plate 51, the underside of plate 51 is arranged to be substantially flush with the underside of tabletop members 2A and 2B, forming the underside of table 1 with few irregularities and a good appearance.

[0152] A cable guide recess 54 extending in the left-right direction is connected to the bottom of one of the pair of left and right wiring holes 45 into which the left and right support members 42 of one outlet unit 4 fit. The cable guide recess 54 is also connected to the plate insertion recess 53 and extends outward in the left-right direction relative to the plate insertion recess 53, and is configured to open to the underside of the top plate 2 when the plate 51 is housed in the plate insertion recess 53.

[0153] 27 and 30 to 32, a wire accommodating groove 47 extending in the left-right direction is connected to a cable guide recess 54 provided in the central top panel member 2A. The wire accommodating groove 47 opens on the underside of the top panel 2 and extends outward in the left-right direction from the cable guide recess 54, passing over the joint between the top panel members 2A and 2B and extending to the underside of the edge top panel member 2B. An end of the wire accommodating groove 47 is located above the leg cover 6 attached to the edge top panel member 2B.

[0154] The wiring accommodating groove 47, the plate insertion recess 53, and the cable guide recess 54 are formed by butting together recesses that open into the connecting end faces (end faces on the inner top frame material 12 side) of the front and rear top panel members 2A, 2A or 2B, 2B. The wiring accommodating groove 47 and the plate insertion recess 53 are formed by cutting out (holing out) the lower decorative plate 22. The cable guide recess 54 is formed by cutting out the lower decorative plate 22 and the lower part of the inner top frame material 12. The groove 47 and the recesses 53, 54 are formed symmetrically in the front and rear across the joint faces of the front and rear top panel members 2A, 2A or 2B, 2B (the front-to-rear center line C shown in Figure 6).

[0155] As shown in Figures 27 and 30 to 32, the wiring cable 101 extending from the outlet unit 4 attached to the central top plate member 2A passes through the support member 42 and is pulled out from the wiring insertion slit 42a through the lower part of the wiring hole 45 and the cable guide recess 54 to the underside of the central top plate member 2A.

[0156] A cable cover 48 is configured to be detachable along the wire accommodation groove 47. The cable cover 48 has an upwardly U-shaped cross section and includes a cover bottom surface 48a extending in the left-right direction and a pair of front and rear cover side walls 48b rising from the front and rear edges of the cover bottom surface 48a. Downward hook-shaped cover claws 48c are provided at one end of each cover side wall 48b and extend outward in the left-right direction beyond the cover side wall 48b.

[0157] The outlet fixing plate 51 is formed with locking holes 51a into which a pair of front and rear cover claws 48c engage. The cover claws 48c are inserted obliquely downward into the cable guide recess 54, and while the cover claws 48c are hooked onto the plate 51, the other end of the wire accommodating groove 47 is rotated upward (lifted) and fitted into 47. This causes the cover claws 48c to engage with the locking holes 51a from above, and one end of the cable cover 48 is held on the underside of the top plate 2 so that it cannot fall off. The left-right length of the wire accommodating groove 47 is set to a length that allows the wiring cable 101 to be inserted between the end opposite the cover claws 48c and the end of the wire accommodating groove 47 when the cover claws 48c are engaged with the locking holes 51a.

[0158] The plate 51 is roughly square in plan view, and a pair of locking holes 51a is provided on each side of the plate 51. This allows the pair of locking holes 51a to be positioned on the front and rear sides of the wire accommodating groove 47 side without having to consider the orientation of the plate 51 when fixing the plate 51 to the plate fitting recess 53, improving workability.

[0159] When fitting the cable cover 48 into the wiring accommodating groove 47, by arranging the wiring cable 101 extending from the outlet unit 4 attached to the central top panel member 2A along the cover underside 48a, the wiring cable 101 can be placed in the wiring accommodating groove 47 together with the cable cover 48. The wiring cable 101 extending from the outlet unit 4 passes through the wiring accommodating groove 47 and is pulled out into the leg cover 6 from the gap between the end of the cable cover 48 and the end of the wiring accommodating groove 47 on the underside of the edge top panel member 2B, and extends above the reinforcing frame 36 of the leg body 3.

[0160] The other end of the wiring accommodating groove 47 (the end on the leg cover 6 side) is located above the first leg cover 61 of the leg cover 6 attached to the underside of the edge top panel member 2B, and is held by the first attachment surface portion 61c so as not to be able to move downward. In this way, the cable cover 48 can be held on the underside of the top panel 2 without using any dedicated fasteners.

[0161] 27 to 29 and 32, a cable guide recess 54 is connected to one of a pair of left and right wiring holes 45 provided in the edge top panel member 2B, which is located above the leg 3. In the edge top panel member 2B, the cable guide recess 54 is provided on the outside in the left-right direction of the one wiring hole 45 (facing the other wiring hole 45).

[0162] As shown in Figure 32, the wiring cable 101 extending from the outlet unit 4 attached to the edge top plate member 2B passes through the support member 42, passes through the wiring insertion slit 42a, passes through the lower part of the wiring hole 45 and the cable guide recess 54, and is pulled out into the leg cover 6 on the underside of the edge top plate member 2B, and extends above the reinforcing frame 36 of the leg body 3.

[0163] As also shown in Figure 6, the wiring cable 101 pulled out into the leg cover 6 is led onto the bottom portion (bottoms 61a, 62a) of the leg cover 6 through an opening 36g provided in the bottom portion 36a of the reinforcing frame 36, and the attachment plug 102 connected to the tip of the wiring cable 101 is connected to the plug socket of the outlet 103 placed inside the leg cover 6.

[0164] In this embodiment, the wiring cable 101 passes through the support member 42 inserted into the wiring hole 45, but the structure for drawing the wiring cable 101 from the upper surface side of the table top 2 to the lower surface side of the table top 2 through the wiring hole 45 is not particularly limited. For example, the wiring cable 101 may pass directly through the wiring hole 45. In this case, it is preferable to decorate the inner peripheral wall of the wiring hole 45. Furthermore, the opening shape of the wiring hole 45 is not limited to a circle, and may be any opening shape, such as a rectangle.

[0165] Furthermore, in the above embodiment, the wiring cable 101 wired in the wiring accommodating groove 47 is supported by the cable cover 48, but the wiring cable 101 may also be supported by the shape of the wiring accommodating groove 47 itself. For example, a bottom wall protruding toward the bottom end of the other inner wall may be provided at the lower end of each of a pair of opposing inner walls of the wiring accommodating groove 47 so as to form a gap, and the wiring cable 101 may be inserted into the wiring accommodating groove 47 through the gap and then moved laterally to be supported on the upper surface of the bottom wall of the wiring accommodating groove 47. In the present invention, the structure for holding the wiring cable 101 in the wiring accommodating groove 47 is not particularly limited. For example, the wiring cable 101 may be supported by disposing a cable fastener such as a hook for hooking the wiring cable 101 in the wiring accommodating groove 47.

[0166] The wiring hole 45 and the wiring groove 47 may be provided at a position other than the joint (joint) between the front and rear central top panel members 2A, 2A. For example, the wiring hole 45 and the wiring groove 47 may be provided in only one of the top panel members 2A, 2B. The wiring groove 47 is formed from the joint between the top panel members 2A, 2A through the joint between the top panel members 2A, 2B to the joint between the top panel members 2B, 2B. However, the wiring groove 47 may be formed only in the joint between the top panel members 2A, 2A, 2B, 2B, or 2A, 2B. For example, in the above embodiment, if the left and right inner edges of the leg cover 6 attached to the top panel member 2B (specifically, the upright portion 61b of the first leg cover 61) are extended so as to be positioned below the joint between the top panel members 2A, 2A, the wiring groove 47 does not need to be formed in the joint between the top panel members 2B, 2B.

[0167] [Schematic configuration of the second embodiment] Next, a table 10 of the second embodiment will be described with reference to Figures 16 to 19. In the description of this embodiment, the same components as those in the above-described embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0168] The table 10 has a pair of left and right legs 3 supporting the longitudinal edge portions of the tabletop 20 and a middle leg 3A supporting the longitudinal center portion of the tabletop 20. The tabletop 20 is generally rectangular and elongated in the left-right direction. It comprises two central tabletop members 2C connected to the front and rear, central tabletop members 2A connected to the left and right edges of each central tabletop member 2C, and edge tabletop members 2B connected to the left and right outer edges of each central tabletop member 2A, for a total of ten tabletop members connected together. The front and rear central tabletop members 2A are connected to each other. The front and rear edge tabletop members 2B are also connected to each other. In this embodiment, the tabletop 20 is large, but does not have beam members extending longitudinally from its underside. This results in a simple and clean appearance when viewed from the front.

[0169] Five outlet units 4 are arranged at intervals on the top surface of the tabletop 20 in the center of the front and rear of the tabletop 20 along the longitudinal direction of the tabletop 20. Although a detailed explanation will be omitted here, the wiring cables 100 extending from each outlet unit 4 are drawn into the leg cover 6 of the leg 3, or the leg cover 6A of the intermediate leg 3A, or through the inside of a wiring groove provided on the underside of the tabletop 2, and into the leg cover 6 of either the left or right leg 3.

[0170] 16, an intermediate leg 3A and a pair of left and right legs 3 are connected to the underside of the tabletop 20. The configuration of each leg 3 is the same as in the first embodiment, so a detailed description will be omitted.

[0171] [Structure of the intermediate legs] As can be seen in Figure 16, the intermediate leg body 3A is attached across the underside of the front and rear central tabletop members 2C and has a leg main body 31A that stands upright in the vertical direction and a pair of left and right reinforcing members 32A that extend from the bottom of the leg main body 31 upward and tilt outward in the longitudinal direction of the tabletop 20. The upper ends of the reinforcing members 32A are located further outward in the longitudinal direction of the tabletop 20 than the lower ends of the reinforcing members 32A. A pair of front and rear screw-type adjusters 5 are provided at the front and rear ends of the underside of the leg main body 31A.

[0172] 17 to 19, the intermediate leg 3A has a generally front-to-rear symmetrical configuration across a front-to-rear centerline extending laterally in a plan view. The leg body 31A of the intermediate leg 3A includes a pair of front and rear vertical supports 33A that stand upright in the vertical direction, a lower horizontal frame 34A that connects the lower parts of the vertical supports 33A, and an upper horizontal frame 35A that connects the upper parts of the vertical supports 33A. A leg support cover 39A is attached to the vertical support 33A, forming a space between the vertical support 33A and the leg support cover 39A that allows a distribution cable (not shown) to be inserted.

[0173] The basic structures of the vertical support 33A, horizontal frames 34A and 35A, and leg support cover 39A, and the mounting structure of the leg support cover 39A to the vertical support 33A are the same as those of the vertical support 33, horizontal frames 34 and 35, and leg support cover 39 of the first embodiment. The pair of front and rear adjusters 5 are attached to the underside of the lower horizontal frame 34A near both front and rear edges.

[0174] The intermediate leg 3A includes left and right reinforcing frames 36A extending from the longitudinal midpoint of the upper horizontal frame 35A extending in the front-rear direction to both the left and right sides in the longitudinal direction (left-right direction) of the tabletop 2. Each reinforcing frame 36A has the same configuration as the reinforcing frame 36 in the first embodiment.

[0175] The left and right reinforcing frames 36A do not have tongue portions 36d (see FIG. 10) of the reinforcing frames 36, and the bottom surfaces 36a of the left and right reinforcing frames 36A are continuous. In other words, the left and right reinforcing frames 36A of the intermediate leg 3A are configured as a single unit. The edges of the side walls 36b and mounting surfaces 36c of the left and right reinforcing frames 36A toward the center in the left-right direction are fixed to the upper horizontal frame 35A. In other words, the upper horizontal frame 35A fits from above into the cutout portions in the left-right center of the series of side walls 36b and mounting surfaces 36c.

[0176] A pair of upper reinforcing plates 37A are disposed on the front and rear sides of each reinforcing frame 36A, sandwiching a portion of each reinforcing frame 36A near the base end, for a total of four upper reinforcing plates 37A. The upper reinforcing plates 37A are fixed to a portion of the mounting surface 36c of each reinforcing frame 36A near the base end and to a portion of the side surface of each upper horizontal frame 35 near the upper end.

[0177] The left and right reinforcing members 32A have their lower ends connected to the lower horizontal frames 34A and their upper ends connected to the reinforcing frames 36A. The lower ends of the left and right reinforcing members 32A are connected to the middle of the lower horizontal frames 34A in the front-to-rear direction. The upper ends of the reinforcing members 32A are connected to the bottoms of the reinforcing frames 36A at positions near the tips.

[0178] As shown in Figure 16(B) and Figures 17 to 19, the table 10 includes leg covers 6A that cover the upper horizontal frames 35, reinforcing frames 36A, and upper reinforcing plates 37A of the intermediate legs 3A from below and are fixed with screws to the underside of the central tabletop member 2C. The leg covers 6A include a pair of left and right first leg covers 61A that cover the distal ends of the left and right reinforcing frames 36A, and a pair of left and right second leg covers 62A that cover the upper horizontal frames 35A, the proximal ends of the reinforcing frames 36A, and the upper reinforcing plates 37A. The leg covers 61A and 62A have the same configuration as the leg covers 61 and 62 of the first embodiment. Note that the leg cover 6A does not include the third leg cover 63 (see Figure 9, etc.) of the first embodiment, and as can be seen from Figures 16(B) and 19, the left and right leg covers 62A are adjacent to each other below the upper horizontal frame 35A.

[0179] 17 and 19, a plurality of locking mechanisms 38 that temporarily fasten the leg covers 61A, 62A by magnetic force are attached to the underside of the bottom portion 36a of the reinforcing frame 36. The leg covers 61A, 62A are made of ferromagnetic metal, and the locking mechanisms 38 magnetically attach the leg covers 61A, 62A, enabling them to be temporarily held in place.

[0180] When a force is applied to the tabletop 20 in the lateral sway direction (longitudinal direction of the tabletop), the intermediate leg body 3A is tensioned by a pair of left and right reinforcing members 32A that tilt outward in the left-right direction from the bottom of the leg body 31A upward, thereby preventing the leg body 31A from tilting and reducing lateral sway.

[0181] The intermediate leg 3A connects the lower portions of a pair of front and rear vertical struts 33A of the leg body 31A with a lower horizontal frame 34A extending in the front-to-rear direction, thereby increasing the rigidity of the leg body 31A. Furthermore, by configuring the leg body 31A in a frame shape with the pair of front and rear vertical struts 33A and the upper and lower horizontal frames 34A and 35A, the rigidity of the leg body 31A is further increased, thereby suppressing front-to-rear swaying of the tabletop 2. Furthermore, when the intermediate leg 3A is viewed from the front-to-rear direction (the short side direction of the tabletop 20), the leg body 31A, the left and right reinforcing members 32A, and the left and right reinforcing frames 36A form a triangular structure, thereby increasing the rigidity of the intermediate leg 3A. Furthermore, the upper horizontal frame 35A and the left and right reinforcing frames 36A of the leg body 31A can be firmly connected to the underside of the tabletop 2, thereby improving the connection strength between the tabletop 20 and the intermediate leg 3A.

[0182] Furthermore, the appearance of the table 10 can be improved by covering the upper horizontal frame 35A and the left and right reinforcing frames 36A with the leg covers 6A. The table 10 is also configured so that the leg covers 6A can be temporarily fastened using the locking mechanism 38A, which makes it easy to tighten and loosen the screws that secure the leg covers.

[0183] The leg cover 6A can also be used as a cable receiver. For example, a cable can be pulled from the outlet unit 4 located above the intermediate leg 3A to below the central tabletop member 2C, and then through the inside of the leg cover 6A and the inside of the leg support cover 39A and pulled out onto the floor. It goes without saying that a plug and outlet housed inside the leg cover 6A can be inserted into the cable path.

[0184] Although the embodiments have been described above, the present invention is not limited to the above-described embodiments and can be embodied in various forms. The configuration of each part is not limited to the illustrated embodiments, and various modifications are possible within the scope of the spirit of the present invention. For example, the configurations described in the above-described embodiments and modified examples (notes, etc.) may be combined, and additions, omissions, substitutions, and other modifications of the configurations are possible. [Explanation of symbols]

[0185] 1 table 2. Top plate 2A Center top plate member 2B Edge top plate member 2C Central top plate member 11 Outer top frame material 12 Inner top frame material 13 Top board frame material 13 Horizontal top board frame material 14 Top plate frame 16 Core material 17 Upper metal plate 18 Lower metal plate 19 Top board core material 21 Upper decorative panel 21a First decorative panel 21b Second decorative panel 22 Lower decorative panel 22a Decorative board 22a First decorative panel 22b Second decorative panel 23 Groove 24 Deep slit 24a deep slit 25 Inner wooden member (an example of a nut holding member or peripheral wall forming member) 26 Horizontal wooden member (an example of a nut holding member or peripheral wall forming member) 27 Intermediate wood member (example of nut holding member) 28 Nut insertion hole 29 Notched recess 30 Connecting pin holder 81 Connecting bolt member 81a Threaded part 82 Connecting nut member 83 Washer 84 Cover member 85 Adhesive

Claims

1. A desk top supported by legs erected on the floor and having wiring holes penetrating vertically, A wiring accommodating groove is formed on the underside of the top plate, extending from the wiring hole toward the leg body, The desk top is configured by connecting a plurality of top members together, The wiring hole and the wiring accommodating groove are formed at the joint between the top plate members. Desk top.

2. a cable cover that closes the opening of the wiring accommodation groove; The lower surface of the cable cover is disposed substantially flush with the lower surface of the top plate. The desk top according to claim 1.

3. The leg body is provided with a leg cover capable of drawing in a wiring cable between the leg body and the underside of the tabletop, The end of the wiring accommodating groove opposite to the wiring hole is led up to above the leg cover. The desk top according to claim 1 or 2.

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