JP2006102121A - Table top structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a table top structure capable of preventing a liquid from flowing inward on the lower surface of the table top and preventing deterioration or curving of the table top when a cup, etc. put on the table top is inclined and the liquid such as a beverage poured into the cup flows down from the outer peripheral end of the upper part of the table top. <P>SOLUTION: An inclined part 2f inclining downward toward the inside of the table top 2 and a lower vertical part 2g extending upward in the vertical direction are formed in the table top, and a corner 2i for connecting both of them is disposed on the table top. Accordingly, most of the liquid 40 flowing down from the outer peripheral part 2d of the upper part of the table top 2 flows downward by its own weight from the lower end of an upper vertical part 2e or the inclined part 2f, and the partly remaining liquid 40 flowing in the direction of the lower surface 2b of the table top 2 from the inclined part 2f is smoothly guided along the corner 2i to securely fall down along the lower vertical part 2g. As a result, deterioration or curving of the table top 2 can be prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a table top structure in which liquids spilled from the top board side are not reliably turned to the back side of the top board.

  Conventionally, the cross-sectional shape of the outer peripheral end portion of the top plate is often an arc shape, a kamaboko shape, a square shape or a trapezoidal shape, and has been processed so that the corners of the top plate do not become acute angles (for example, patent documents) 1). In recent years, in order to make the top plate apparently thinner and smarter, there is a shape in which the upper part of the side of the top board is inclined substantially vertically and the lower part is inclined toward the inside of the lower surface of the top board (for example, , See Patent Document 2). Furthermore, recently, a power supply outlet and a communication outlet necessary for using an electric device such as a personal computer are formed below the top board, and a plug of the electric device can be inserted. (For example, refer to Patent Document 3).

Japanese Utility Model Publication No. 56-54807 (first page, right column, 25th column to second page, left column, 33rd column, FIGS. 1 and 2) Japanese Utility Model Publication No. 6-55432 (FIG. 1) Microfilm of Japanese Utility Model No. 55-25897 (Japanese Utility Model Publication No. 56-128031) (page 2, line 18 to page 3, line 14, FIGS. 1 and 3)

  However, even if it is the cross-sectional shape of the outer peripheral edge part in any top plate of patent documents 1, 2, the container etc. which put the drink put on the top plate fall down, liquids, such as water, flow, and the liquid If it flows down from the outer peripheral edge of the top plate, some of the liquid that flows down may wrap around the back of the top plate. In the case of a table used in a curved, especially in a cafeteria, there is also a hygiene problem, and it is necessary to bend and clean below the top plate to wipe off the liquid that wraps around the back of the top plate. Time was spent on labor.

  Further, in Patent Document 3, there is a possibility that the liquid flowing into the lower surface side of the top plate flows into the outlet of the outlet along the pedestal and causes the outlet to malfunction or short.

  The present invention has been made paying attention to such problems, and a container such as a cup installed on the top plate is tilted, and a liquid such as a beverage poured into the cup is placed on the outer periphery of the top plate. Even when the liquid flows down from the end, it prevents the liquid from flowing into the inner surface of the lower surface of the top plate, causing the top plate to deteriorate or bend. An object of the present invention is to provide a table top structure that prevents a liquid from flowing into the outlet of the outlet, and does not cause a failure or a short circuit, even if the table is provided with the outlet.

In order to solve the above-described problem, the top plate structure of the table according to claim 1 of the present invention is such that the cross-sectional shape of the outer peripheral end of the top plate is directed substantially downward in the vertical direction from the upper peripheral end of the top plate. An upper vertical portion, a downwardly inclined portion close to the horizontal extending from the lower end of the upper vertical portion to the inside, a lower vertical portion extending substantially upward from the outer peripheral end of the lower surface of the top plate, and the lower vertical portion, A corner portion that connects the downward inclined portion is provided.
According to this feature, even if the liquid flows out on the top plate due to the tilting of a container such as a cup placed on the top plate and flows down from the upper outer peripheral edge, most of the liquid that flows down Is flowing down from the lower end of the upper vertical part or the inclined part under its own weight, and some remaining liquid flowing from the inclined part toward the lower surface of the top plate is also smoothly guided along the corner part, along the lower vertical part. The liquid can be reliably dropped downward, the liquid is prevented from flowing into the lower surface of the top plate, and the top plate is not deteriorated or curved.

The top plate structure of the table according to claim 2 of the present invention is the top plate structure of the table according to claim 1, wherein the lower vertical portion is constituted by a vertical member that can be attached to the lower surface of the top plate. It is characterized by that.
According to this feature, the liquid flowing from the inclined portion can be surely guided and dropped downward along the vertical member only by providing the vertical member on the lower surface of the top plate.

The table top structure of the table according to claim 3 of the present invention is the table top structure according to claim 1 or 2, wherein the outer side of the table is attached to the pedestal supporting the table top. An outlet provided with a facing insertion port is formed, and the lower vertical part is positioned at least on the front side of the insertion port of the outlet.
According to this feature, even if the outlet is formed on the pedestal, the lower vertical part is formed on the front side of the outlet of the outlet, so that liquid does not flow into the outlet. There is no failure or short circuit.

The table top structure according to claim 4 of the present invention is the table top structure according to any one of claims 1 to 3, wherein the inclined portion extends along an outer periphery of the table top. A plurality of grooves are formed.
According to this feature, since the flow of the liquid flowing from the upper vertical portion to the inclined portion can be shaken off by the plurality of grooves, the amount of the liquid flowing into the lower vertical portion can be reduced as much as possible.

  Examples of the present invention will be described below.

  FIG. 1 is a perspective view showing an overall image of a table with an outlet, FIG. 2 is a perspective view showing an outlet unit provided on the top plate support member, and FIG. 3 is a top plate support member, a pedestal, and an outlet. 4 is an exploded perspective view of the unit, FIG. 4 is a perspective view showing a back structure of the top plate support member, and FIG. 5A is a perspective view in which the outlet unit is attached to the top plate support member. FIG. 5B is a perspective view showing a modified example in which the closing member is attached to the top plate support member, and FIG. 5C is a perspective view showing a modified example in which the communication unit is attached to the top plate support member. FIG. 6 is a partially cutaway perspective view showing the back surface structure of the table, and FIG. 7A is a perspective view showing a state in which the liquid poured into the tilted cup flows out to the top plate. In FIG. 7B, the liquid in the cup flows below the top plate. It is a sectional view showing a state.

  In this table 1 with an outlet (hereinafter referred to as “table 1”), as will be described in detail later, it is possible to supply power to the electrical devices mounted on the top plate 2. Therefore, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the table 1 is mainly a top plate 2 having a rectangular shape when viewed from above, and corners of the top plate 2 are notched. The pedestal 3 (four legs in this embodiment) provided on the lower surface of the table corner 2c formed in this way, and the top board support member 10 (the book) provided between the two (top board 2 and pedestal 3). In the embodiment, there are four), and an adjuster 33 as a grounding member whose height can be adjusted is attached to the lower end of the pedestal 3, and the table 1 is stably placed on the floor 39. Yes.

  A plurality of chairs 35 are installed around the table 1, and a plurality of cups K into which a liquid 40 as a beverage is poured and a plurality of notebook computers (hereinafter referred to as personal computers) 34 as electrical devices are provided on the top board 2. The plug 24b provided at the tip of the power cable 24a that is installed and connected to each personal computer 34 is formed in the outlet unit 20 described later provided in each top plate support member 10 located in the vicinity. It is inserted in the entrance. A power cord 26 extends from the rear side of the outlet unit 20 along the rear surface of the pedestal 3, and a plug 26 a provided at the tip of the power cord 26 is inserted into an outlet 37 provided on the wall surface 36. Yes.

  Hereinafter, in the description of the present embodiment, the outer side of the top plate support member 10 is referred to as the front, the inner side and the back side of the top plate support member 10 are referred to as the rear, and both side directions of the top plate support member 10 are described as the left and right directions.

  As shown in FIG. 2, the outlet unit 20 includes a surface plate 20 a provided with an insertion port 20 b, a rectangular box-shaped insertion portion 20 c formed to extend toward the rear of the surface plate 20, The power cord 26 extends from the opposite side of the insertion port 20b of the insertion portion 20c. A plug 26a is provided at the tip of the power cord 26. A spiral band 29 is wound around the power cord 26 at a predetermined interval.

  Two guide pieces 21 are respectively formed on the insertion port 20b side of the upper and lower end surfaces of the insertion portion 20c, and on the opposite side of the insertion port 20b on the left and right end surfaces of the insertion portion 20c, respectively, from the rear toward the bottom. A locking piece 23 that is bent into a "C" shape is formed, and an operating portion 23a is provided at the tip. In the vicinity of the bend of the locking piece 23, an engaging convex portion 25 corresponding to an engaging portion protruding outward is formed.

  Next, the top plate support member 10 and the pedestal 3 that support the top plate 2 will be described in detail. As shown in FIG. 3, a pair of top plate support members 10 that can be connected to the top plate 2 are provided on the top surface. A fan-shaped support portion 14 is provided, and through holes 15 penetrating vertically are formed at a plurality of locations on the fan-shaped support portion 14, and the top plate 2 can be connected by bolts 27 through the through holes 15. A pair of insertion pieces 17 extend downward from the lower surface of the top plate support member 10.

  A through hole 12 is formed in the outer side surface of the top plate support member 10 in a substantially horizontal direction from the first opening 12 a facing outward, inward, and inward on the upper and lower surfaces of the inner periphery of the through hole 12. A sliding groove 11 is formed so that the guide piece 21 of the outlet unit 20 is slidably fitted. An engaging recess 18 corresponding to the engaged portion is formed on the inner side of the through hole 12 toward the upper and lower sides. A through-hole 16 for a bolt that penetrates downward is formed on the lower surface of the through-hole 12, and an opening 12 c that penetrates upward is communicated with the upper surface of the through-hole 12.

  Grooves 5 penetrating vertically are formed in the pillar 3 in the front, rear, left and right, and insertion grooves 6 are formed in the rear groove 5 in the vertical direction. The upper end portion 3a and the lower end portion 3b of the pedestal 3 are formed with a screw hole 4 at the center thereof, and the lower end portion 3b is fitted with a cover member 7 having a through hole 7a. The adjuster 33 is attached toward the screwing hole 4 of the lower end portion 3b.

  The top plate support member 10 and the pedestal 3 are connected by fitting the insertion piece 17 of the top plate support member 10 to the left and right grooves 5 and fixing the position to the upper end portion 3a of the pedestal column 3, and then the bolt 28. Is inserted into the through hole 16 from the opening 12 c of the top plate support member 10, screwed into the screw hole 4 of the leg 3, and tightened to complete the connection. Thus, the top plate support member 10 and the pedestal 3 are reliably connected by the screwing with the bolt 28 and the insertion piece 17. Since the top plate support member 10 and the pedestal 3 connected in this way can be easily separated, even when it is desired to change the height of the pedestal 3, the new pedestal 3 having a different length can be replaced. Can be easily configured.

  Then, after the connection between the top plate support member 10 and the pedestal 3 is completed, the outlet unit 20 can be inserted from the first opening 12 a of the top plate support member 10 toward the through hole 12. Therefore, the attachment of the outlet unit 20 will be briefly described. While the outlet unit 20 is inserted into the through hole 12 of the top plate support member 10, the outlet unit 20 is inserted into the engagement recesses 18 formed on the left and right side surfaces of the through hole 12. The engagement is completed by engaging the 20 engaging convex portions 25, and the outlet unit 20 is fixed to the top plate support member 10.

  Further, it is possible to attach a closing member 32 as a member for closing the first opening 12 a without attaching the outlet unit 20 to the through hole 12, and the closing member 32 is similar to the outlet unit 20 in the surface plate 32 a. Two guide pieces 32e are formed on the insertion portion 32c extending toward the rear side, and the upper and lower end surfaces of the insertion portion 32c on the surface plate 32a side, and notches 32d are formed on both side surfaces of the insertion portion 32c. Has been.

  Next, the back structure of the top plate support member 10 will be described. As shown in FIG. 4, a second opening 12 b is formed at the rear of the top plate support member 10 and is connected to the through hole 12. ing. That is, the first opening 12 a and the second opening 12 b are connected via the through hole 12. Engaging recesses 18 are formed upward at both front end portions of the inner peripheral surface of the second opening 12b, and wiring grooves 19 are formed from the vicinity of the front end of the second opening 12b toward the front obliquely downward. The power cord 26 can be guided. The second opening 12b can be attached by press-fitting a fitting portion 32c into the through hole 12 with the notch 32d of the closing member 32 facing in the front-rear direction.

  A power cord 26 (not shown) extending from the rear end of the outlet unit 20 extends along the wiring groove 19 from the second opening 12b when the above-described outlet unit 20 (not shown) is attached to the through hole 12. In addition, it can be pulled out downward. A connecting portion 13 projecting rearward is formed at the upper rear end of the top plate support member 10, and a connecting hole 13 a penetrating in the front-rear direction is formed at the central position of the connecting portion 13. The bolt 27 is screwed into the screwing hole 45a of the connecting portion 13 from the second opening 12b through the connecting hole 13a, so that a connecting member 45 described later is connected to the connecting portion 13.

  As shown in FIG. 5A, when the outlet unit 20 is attached to the top plate support member 10, the outer surfaces of the insertion port 20 b and the surface plate 20 a are flush with the outer surface of the top plate support member 10. Thus, the protrusion when plugged in can be avoided as much as possible, and the flush surface can be flush with the outer surface of the pedestal 3, so that a table leg with excellent aesthetics can be provided.

  Further, in a state where the outlet unit 20 is mounted in the through hole 12, the outer surface of the first opening 12 a is closed by the surface plate 20 a, so that dust and dust can be prevented from entering the through hole 12. The A plurality of bolts 27 are penetrated upward in the fan-like support portion 14 of the top plate support member 10 and screwed into screw holes (not shown) formed on the bottom surface of the top plate 2 so as to be firmly fixed.

  FIG. 5B is a modification in which the above-described closing member 32 is attached to the first opening 12 a of the top plate support member 10, and the first opening 12 a is closed by the surface plate 32 a of the closing member 32. Since it becomes flush with the outer surface of the top plate support member 10, it can be used as a table that does not require the outlet unit 20, and only by removing the closing member 32 and replacing it with the outlet unit 20. It can be changed to the table 1 with an outlet at any time.

  FIG. 5C is a modification in which the communication unit 41 is attached to the first opening 12a of the top plate support member 10, and an insertion port 41b to which a LAN cable or the like can be connected is provided at the center of the surface plate 41a. ing. In addition, since the attachment / detachment of the communication unit 41 from the top plate support member 10 is substantially the same as the outlet unit 20 described above, the description thereof is omitted. As described above, the present invention is not limited to the power supply outlet unit 20 and the communication connection communication unit 41, and can be applied to various connection outlet units.

  The power cord 26 connected to the outlet unit 20 is reversed at the second opening 12b of the top plate support member 10 and is placed in the groove 5 (see FIG. 3) from the insertion groove 6 of the pedestal 3. In addition, it is possible to improve the safety without being caught in the hands and feet of the user who uses the table 1, and to improve the appearance of the table 1 from the outside.

  As shown in FIG. 6, the outer peripheral surface of the top plate 2 has an upper surface vertical portion 2 e formed downward from the upper surface outer peripheral end portion 2 d, and is inclined slightly downward inward from the lower end of the upper surface vertical portion 2 e. An inclined portion 2 f is formed toward the lower surface of the top plate 2. In addition, a connecting member 45 is connected to each of the connecting portions 13 on the rear end side of the top plate support member 10 provided at the table corner 2 c in an arch shape, and a connecting member 46 is connected between the pair of connecting members 45. Are connected to form a strong framework.

  Therefore, the connection strength of the pedestals 4 provided at the table corners 2c by the connection members 45 and 46 is increased, and for example, it is possible to deal with a large top plate or a heavy top plate. Moreover, the top plate 2 can be supported more stably by enlarging the support area of the top plate 2 by the fan-shaped support portion 14 of the top plate support member 10.

  And a user connects each power cable 34a (refer FIG. 1) extended from electric equipments, such as each personal computer 34 arrange | positioned on the top plate 2, to the outlet unit 20 located in the vicinity, Each personal computer 34 can be surely supplied with electricity, and even when the user moves to a desired position on the table and performs work, the electricity can be supplied from the outlet unit 20 on the nearby pedestal 3, so that the personal computer is always available. 34 is available. In addition, since the outlet unit 20 is located outside the top plate support member 10, the power cable 34 can be wired at the shortest distance without causing any trouble in the surroundings.

  Next, the outer peripheral surface of the top plate 3 and the structure in the vicinity thereof will be described in detail. As shown in FIGS. 7 (a) and 7 (b), the upper surface outer peripheral end 2d of the top plate 2 is substantially vertically downward. An upper vertical portion 2e is formed toward the top, and a gently downward inclined portion 2f is formed inward from the lower end of the upper vertical portion 2e. And the lower vertical part 2e is formed from the lower surface outer peripheral edge part 2h of the lower surface 2b of the top plate 2 upward substantially in the vertical direction, and the lower vertical part 2e and the inclined part 2f are connected so as to be loose. A curved corner portion 2i is formed.

  As shown in FIG. 7 (a), for example, when the user tilts the cup K and causes the liquid 40 inside to flow on the top plate 2, the liquid 40 flows vertically from the upper outer peripheral edge 2d. When flowing downward along the portion 2e, as shown in FIG. 7B, the liquid 40 flows in the direction of the lower vertical portion 2g from the upper vertical portion 2e through the inclined portion 2f and the corner portion 2i. ing.

  Most of the liquid 40 that flows down from the upper outer peripheral edge 2d flows down by its own weight from the lower end of the upper vertical part 2e or the inclined part 2f, and a part of the remaining liquid flows into the lower surface 2b of the top plate 2 from the inclined part 2f. 40 is also smoothly guided along the corner portion 2i, and reliably falls downward along the lower vertical portion 2g formed substantially vertically upward from the lower outer peripheral end portion 2h. The vertical height of the lower vertical portion 2e is optimal based on the verification experiment of the present applicant so that the liquid 40 does not get over the lower end of the lower vertical portion 2g and enter the lower surface 2b of the top plate 2. The height is 3 mm or more, and also in this embodiment, the height from the lower end of the inclined portion 2 f to the lower end of the lower vertical portion 2 e is 3 mm or more.

  For this reason, since the lower vertical portion 2g is formed on the front side of the insertion port 20b facing the outside of the table 1 provided on the lower surface 2b of the top plate 2, the insertion port 20b and the through hole 12 are formed. The flow of the liquid 40 into the inside is prevented, and it is possible to prevent a failure or a short circuit from occurring.

  As described above, in the first embodiment, the container such as the cup K installed on the top plate 2 is tilted, and the liquid 40 such as a beverage poured into the cup is lowered from the upper outer peripheral end 2d of the top plate 2. Even if the liquid flows down to the top, the liquid 40 does not flow to the inner side of the lower surface 2b of the top plate 2, and is prevented in advance so as not to cause deterioration or bending of the top plate 2. Since the liquid can be removed simply by wiping the lower end of the table, the table 2 can be kept in a good condition in terms of hygiene.

  Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 8 is a cross-sectional view showing a state in which the liquid in the cup flows out to the top plate. In the following second embodiment, the same structural parts as those of the first embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

  As shown in FIG. 8, the top plate 2 ′ is not formed with the lower vertical portion 2 g of the first embodiment, and the top plate 2 ′ is vertically directed downward from the lower surface outer peripheral end 2 h ′ of the top plate 2 ′. A member 42 is provided. The height of the vertical member 42 is 3 mm or more like the lower vertical portion 2g of the first embodiment. The liquid 40 flowing from the inclined portion 2 f ′ toward the lower surface 2 b ′ of the top plate 2 ′ is guided along the corner portion 2 i ′ and surely falls downward along the vertical member 42.

  As described above, in the second embodiment, even if the top plate 2 is not formed with the lower vertical portion 2g, the inclined portion 2f can be obtained simply by providing the vertical member 42 on the lower surface outer peripheral end 2h ′ of the lower surface 2b ′ of the top plate 2. Like the lower vertical portion 2g of the first embodiment, the liquid 40 flowing in from 'can be guided downward and reliably dropped along the vertical member 42. The vertical member 42 may be provided only on the lower surface side of the table corner 2c 'where the outlet unit 20 is disposed, without being provided on the entire periphery of the lower surface of the table.

  Next, Embodiment 3 of the present invention will be described with reference to FIG. FIG. 9 is a cross-sectional view showing a state in which the liquid in the cup flows out to the top plate. In the following third embodiment, the same structural parts as those of the above-described second embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

  As shown in FIG. 9, the inclined portion 2f ″ is formed with a plurality of grooves along the outer periphery of the top plate 2 ′, and the liquid 40 flowing into the inclined portion 2f ″ from the upper vertical portion 2e ′. Since the flow can be shaken off by a plurality of grooves, the amount of liquid flowing into the lower vertical portion can be reduced as much as possible. Needless to say, the same effect can be obtained by forming a plurality of grooves along the outer periphery of the top plate 2 for the inclined portion 2f of the first embodiment.

  As described above, the first to third embodiments of the present invention have been described with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the present invention may be modified or added without departing from the scope of the present invention. For example, in the first embodiment, the lower vertical portion 2g is formed on the entire outer periphery of the lower surface outer peripheral end portion 2h. In the second and third embodiments, the vertical member 42 is formed on the lower surface outer peripheral end portion 2h ′. It is preferable that the liquid 40 can be prevented from entering into the lower surface 2b of the top plate 2 even if the liquid 40 flows into any of the upper surfaces 2a of the top plate 2 by providing it on the entire outer periphery. If the lower vertical part 2g is formed on the front side of the insertion port 20b or the vertical member 42 is provided, the liquid 40 can be prevented from entering the insertion port 20, and placed on the upper surface 2a of the top plate 2. PC It is not possible to give a significant loss in electrical equipment such as 4.

It is a perspective view which shows the whole image of the table with an outlet in Example 1 of this invention. It is a perspective view which shows the outlet unit provided in a top-plate support member. It is an exploded assembly perspective view of a top plate support member, a pedestal, and an outlet unit. It is a perspective view which shows the back surface structure of a top-plate support member. (A) is a perspective view in which the outlet unit is attached to the top plate support member, (b) is a perspective view showing a modified example in which the closing member is attached to the top plate support member, and (c) FIG. 5 is a perspective view showing a modification in which a communication unit is attached to a top plate support member. It is a partially broken perspective view which shows the back surface structure of a table. (A) is a perspective view which shows the state into which the liquid poured into the tilted cup flowed out to the top plate, (b) is sectional drawing which shows the state in which the liquid of the cup flowed out below the top plate. is there. It is sectional drawing which shows the state which the liquid of the cup in 2nd Example flowed out to the top plate. It is sectional drawing which shows the state which the liquid of the cup in 3rd Example flowed out to the top plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Table 2, 2 'Top plate 2a Upper surface 2b, 2b' Lower surface 2c, 2c 'Table corner 2d Upper surface outer peripheral part 2e, 2e' Upper vertical part 2f, 2f ', 2f''Inclined part 2g Lower vertical part 2h, 2h 'Lower surface outer peripheral ends 2i, 2i' Corner portion 3 Leg column 3a Upper end portion 3b Lower end portion 10 Top plate support member 12 Through hole 18 Engaging recess 19 Wiring groove 20 Outlet unit 20a Surface plate 20b Insert port 25 Engaging projection 26 Power cord 26a Plug 34 Personal computer (electric equipment)
34a Power cable 34b Plug 40 Liquid 41 Communication unit 42 such as LAN Vertical member K Cup

Claims (4)

  The cross-sectional shape of the outer peripheral end of the top plate is an upper vertical portion that extends from the upper surface outer peripheral end of the top plate substantially downward in the vertical direction, and a substantially downward downward inclined portion that extends inward from the lower end of the upper vertical portion. A table top plate structure comprising: a lower vertical portion that extends substantially vertically upward from the outer peripheral edge of the lower surface of the top plate; and a corner portion that connects the lower vertical portion and the downward inclined portion. .   The table top structure according to claim 1, wherein the lower vertical part is formed of a vertical member that can be freely attached to a lower surface of the table.   2. An outlet provided with an insertion port facing outward of the table is formed on a pedestal supporting the top plate, and the lower vertical portion is positioned at least on the front side of the insertion port of the outlet. Or the top plate structure of the table of 2.   The table top plate structure according to any one of claims 1 to 3, wherein a plurality of grooves along an outer periphery of the top plate are formed in the inclined portion.

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