JPH04136139U - desk top - Google Patents

Abstract

(57) [Summary] [Purpose] Easily attach other objects to the rear edge of the top plate body.
And it should be able to be installed in an attractive manner. [Structure] A mounting body that includes a receiving plate (24) for supporting the object to be mounted in a rectangular recess (7) provided at the rear end of the side edge of the top plate body (3).
(21) is installed.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to the top plate of desks such as office desks, and in particular, pin-up Equipment such as boards and lighting fixtures can be installed easily and stylishly, and In addition, the wiring cords to these devices can be routed through the inside of the top plate. Regarding the top plate.

0002

[Conventional technology]

Traditionally, optional equipment such as pin-up boards and lighting fixtures were attached to the top of the desk. Usually, a vise is attached to the legs of these devices, and the vise is used to secure the edges of the top plate. I'm holding it in my mouth.

0003

[Problem that the idea aims to solve]

In the conventional vise installation method, the structural members of the vise protrude outward from the periphery of the top plate. Therefore, desks cannot be placed close to adjacent desks or walls, creating gaps. It looks unsightly and wastes space.

0004 Also, the screw shaft of the vise can now be operated from the side or below of the desk. Therefore, when installing or removing optional equipment, the desk must be moved and the adjacent desk or wall surface It is necessary to separate it from the ground, and this work is troublesome.

[0005] Furthermore, with conventional means, the wiring cords of electrical appliances etc. installed on the desk are Since it is exposed on the outside, it is unsightly and may cause the cord to be accidentally caught on the There is a risk of equipment falling or cords being cut.

[0006] As a means to eliminate these drawbacks, there is a method published in Utility Model Publication No. 57-29635 (on the top of desks, etc.). (Devices for attaching objects to desks), Utility Model Publication No. 63-37691 (Devices for attaching lighting fixtures, etc. to desks) ), the one described in Utility Model Publication No. 63-131643 (extracting device for code, etc. from desk top plate) is known. It is being

[0007] These conventional technologies each involve a decorative edging material attached around the top plate, or Cut out the necessary parts on the edge of the top plate itself, and insert the mounting points for optional equipment into the cutouts. Attach the attachment, and use the notch to pass the wiring cable through the periphery of the top plate. Make sure that the mounting parts do not protrude.

[0008] However, even with these conventional techniques, it is not possible to solve all the problems mentioned above. If this is not possible, the desk must be moved away from the adjacent desk or wall in order to attach or detach the mount itself. If the wiring cord is exposed outside of the insertion part of the top plate, The problem remains.

[0009] The purpose of the present invention is to provide a desk top that eliminates the drawbacks of these conventional technologies. shall be.

0010

[Means to solve the problem]

In order to achieve the above purpose, the desk top of the present invention has a rectangular recess at the rear end of the side edge. The formed top plate body, A receiving plate is fixed to the side surface of the recess and horizontally protrudes outward. The mounting body is equipped with an equipment mounting base that has a slope that slopes outward and downward on the upper side. It may also be set up.

[0011] Square recesses are symmetrically formed at the rear end of both sides of the top plate body, creating a symmetrical shape. A pair of mounting bodies and a cover member may be attached.

0012 A cover holding part for holding the cover member is provided on the outside of the receiving plate at the rear end of the mounting body. In addition, a slit for attaching the cover member is cut on the top surface of the base plate of the mounting body, and the cover is attached. - By inserting the tongue hanging down from the inner edge of the member into the slit, the cover can be removed. It is best to hold the inner edge of the member.

[0013] The cover member covers the rear cover that covers the receiving plate part of the mounting body and the equipment mounting base part. It may also be divided into a front cover.

[0014] A downwardly curved part is provided at the rear end of the rear cover, and a downwardly curved part is provided at the rear of the top plate body. can protrude from a receiving gutter disposed on the edge and overlap a receiving plate at the rear end of the mounting body; A cutting guide line may be provided to easily form a square hole through which the receiving piece can pass.

[0015] Connect the wiring cords to electrical equipment placed on the top board to the support of the hollow structure that supports the top board. Connect the electrical equipment from the holder through the inside of the cover member and through the through hole on the top of the equipment mount. It is better to connect to

[0016]

[Effect]

A receiving plate that protrudes outward from the mounting body attached to the rectangular recess at the rear end of the side edge of the top plate body. , and by removing the lid of the notch hole of the cover member corresponding to the position of the equipment mounting base, Optional equipment can be attached and detached from the top side of the top plate body.

[0017] Place recesses, mounting bodies, cover members, etc. symmetrically on both sides of the rear of the top plate body. This allows large devices such as pin-up boards to be placed over the entire width of the top. It can be mounted with support on both the left and right sides of the Therefore, you can choose to install it on the left or right depending on your convenience.

[0018] Insert the tongue piece of the cover member into the slit in the base plate of the mounting body from above to attach it. Therefore, there is no need to create a working space between adjacent desks and walls.

[0019] The wiring cord is routed through the inside of the cover member, so it is not exposed on the outside of the desk. do not have.

[0020]

【Example】 1 to 5 show embodiments of the invention according to claims 1 to 5 and 7. FIG.

[0021] FIG. 1 is a perspective view showing the schematic structure of a desk equipped with a top plate according to an embodiment of the present invention.

[0022] In Figure 1, the desk has a pair of left and right legs (1) (1) connected by a connecting member (2). It consists of a top plate body (3) attached on top of the legs.

[0023] The top plate body (3) has countersunk head bolts inserted into the vertical screw holes (5) provided at the front and back of the top of each leg (1). It is fixed by screwing in the hole (6) (the front one is not shown).

[0024] On both rear sides of the top plate main body (3), there are mounting surfaces facing forward from the rear edge parallel to the side edges, and An almost corner consisting of a slope that faces outward from the front edge of the top plate and reaches the side edge of the top plate body (3). A shaped recess (7) is provided.

[0025] A cover member (8) is removably attached to this recess (7) via a mounting plate (21), which will be described later. It is worn in Noh. The cover member (8) complements the recessed part (7) when installed. to keep the overall outline of the top plate in a rectangular shape.

[0026] The cover member (8) consists of a front cover (35) and a rear cover made of sheet metal or plastic. (36) and a corner cover (37), with lids (9) and (9) on the upper surfaces of the former two, respectively. An appropriate number of notched holes (10) and (11) are provided to fit a) and (9b). Remove lids (9) (9a) (9b) Then, insert the support legs of the lighting equipment (12), pin-up board (13), etc. into the notch holes (10) and (11). It can be loaded from either side. At this time, the wiring cord (14) of the lighting fixture (12) - is guided to the outside through the inside of the member (8) and the hollow leg (1).

[0027] Figure 2 shows the mounting body (21) attached to the recess (7) of the top plate body (3) and other parts. FIG.

[0028] As mentioned above, the recessed part (7) faces the mounting surface parallel to the side edge of the top plate main body (3) and toward the front and outside. The mounting surface has a plurality of (three in this example) screw holes (14). I'm being kicked.

[0029] Stack the mounting body (21) on the outside of the side cover (15) and insert it into the respective through holes (19) and (22). Insert the bolt (23) into the screw hole (14) and tighten.

[0030] The side cover (15) is made of sheet metal or plastic and is fitted along the planar shape of the recess (7). It is bent and formed, and its front end has a cross section with cosmetic shaping of the side edge of the top plate main body (3). A shaping member (17) is provided that matches the cross-sectional shape of the edge material (16).

[0031] On the outside of the rear end of the side cover (15), there is a side surface that matches the cross-sectional shape of the rear edge of the top plate body (3). It has a shape and overlaps with the lower surface of the receiving plate (24) which protrudes outward from the rear end of the mounting body (21). A cover plate (18) is provided protrudingly.

[0032] On both upper and lower edges of the side cover (15) in contact with the recess (7), there are short outward facing edges. A flange is provided.

[0033] The cover plate (18) has a through hole (20) at a position that matches the countersink hole (25) provided in the receiving plate (24). It's open.

[0034] The mounting body (21) is made of die-casting, and its vertical base plate (21a) is attached to the top plate body (3). The side cover has a bent planar shape that matches the recess (7) and the side cover (15). - (15) is fitted between the upper and lower outward flanges.

[0035] The thickness of the base plate (21a) is greater than the amount of protrusion of the upper and lower outward flanges of the side cover (15). The upper and lower edges of the base plate (21a) protrude slightly from the outward flange. There is.

[0036] The receiving plate (24) at the rear end of the base plate (21a) has a support plate for attaching the top plate body (3) to the legs. Countersink hole (25) for inserting the countersunk head bolt (6) from above, and support for optional equipment A screw hole (50) is drilled for attaching the piece (51).

[0037] A cover holding portion (26) is provided on the outer edge of the receiving plate (24). The cover holding part (26) is When the mounting body (21) is attached to the recess (7) of the top plate body (3) via the side cover (15) , a semi-cylindrical portion located on an extension of the shaping member (17) at the front of the side cover (15); It consists of an inner vertical surface. The radius of this semi-cylindrical part is the outside of the front cover (35). The side radius is made smaller by the plate thickness.

[0038] The front edge of the vertical surface of the cover holding part (26) protrudes forward from the front end of the semi-cylindrical part and is vertical. A direct receiving piece (27) is formed, while a vertical receiving piece (27) is formed at the front end of the base plate (21a), facing the vertical receiving piece (27). , a vertical receiving piece (28) facing rearward is formed.

[0039] A plurality of slits (29) are cut along the longitudinal direction on the upper surface of the substrate part (21a). . The vertical receiving pieces (27), (28) and slits (29) are for attaching the front cover (35). It is something.

[0040] Also, on the upper surface of the rear end of the board section (21a), there is a slot for attaching the rear cover (36). It is engraved with tsuto (30).

[0041] Three device mounting stands (31a) to (31c) are protruded outward in the center of the board (21a). (Hereinafter, the three pieces are collectively referred to as the equipment mounting base (31)).

[0042] When viewed from the front, each equipment mounting stand (31) has a right-angled triangular section with slopes sloping outward and downward. It forms a plane, and the central wide slope (31b) has two screw holes (32) lined up one behind the other. , one screw hole (32) is drilled in each of the two narrow slopes (31a) and (31c) at the front and rear. Ru. This allows the equipment holder (3 3) can be attached with bolts (34).

[0043] The equipment holder (33) corresponds to the slope of the equipment mounting base (31) at the front and back of the bottom of the vertical square tube. The equipment mounting bases (31a), (31b), and (31b) are One piece can be installed on each of (31c) and (31c).

[0044] The cover member (8) is shown in FIG. 2 as seen from above, and in FIG. 3 as seen from below. It is shown in

[0045] The front cover (35) is a top plate that has a planar shape that matches the recessed part (7) of the top plate body (3). (38), a side plate (39) facing vertically downward from its outer edge, and a semicircle protruding from its outer surface. It consists of a shaped part (40) with a cylindrical cross section, and the side plate (39) and the shaped part (40) form the top plate main body (3). It forms a cross-sectional shape that coincides with the side edges of.

[0046] The inner edge of the top plate (38) has a hole that can be inserted into the slit (29) of the base plate (21a) of the mounting body (21). Three tongue pieces (41) are hung vertically. Also, on the inner surface of the side plate (39), there is a mounting body (21). A pair of front and rear hooks (42) (42) that can be engaged with the vertical receiving pieces (27) (28) are provided.

[0047] Engage the hooks (42) (42) with the vertical receiving pieces (27) (28) from above, and attach the three tongue pieces (41) to them. The front cover (35) is attached to the mounting body (21) by inserting it into the slit (29). I get kicked. When the front cover (35) is installed, its side plate (39) and shaping part (40) are Continuing with the shaping member (17) of the side cover (15), the side edge of the top plate body (3) is shaped.

[0048] There are guide rails (43) on the bottom of both the front and back sides of the top plate (38) at two locations on the inside edge. (43) is provided with an outward facing cutout hole (10), as shown in Figure 2. The lid (9a) can be inserted from the inside edge. These notched holes (10) are It is located directly above the equipment holder (33) attached to the pedestal (31).

[0049] The rear cover (36) is a flat plate that extends behind the top plate (38) of the front cover (35). The rear end is a downwardly curved part (36a), and this downwardly curved part (36a) is connected to the side cover. The rear end of the bar (15) is joined to the rear edge of the cover plate (18) to form a semicircular part. ing.

[0050] The inner edge of the rear cover (36) has a slit (30 ) is provided vertically with a tongue piece (44) that can be inserted into the corner part cover (37). A hook receptacle (45) is provided which can be engaged with.

[0051] The front edge of the rear cover (36) has a pair of inner and outer guide rails (46) on the lower surface. A notch hole (11) is provided in the direction, and the lid (9b) is inserted from the front as shown in Figure 2. It is designed so that it can be inserted.

[0052] A square notch (55) is provided at the rear end of the inner and outer edges of the rear cover (36).

[0053] (51) supports the lower side of the pinup board (13), which is an example of optional equipment. This is a supporting piece that holds the horizontal mounting piece (52) upright from the rear end of the outer edge thereof. Bis(53) into the screw hole (50) of the receiving plate (24) through the through hole (54) in the mounting piece (52). As a result, the mounting piece (52) is fixed to the receiving plate (24). At this time, the support piece (51) - (36) through the square notch (55) provided at the rear end of the inner and outer edges, and protrudes upwards of the top plate body (3). put out

[0054] Insert the screw through the through hole (56) provided in the support piece (51) to the side of the pinup board (13). The pin-up board (13) can be installed by screwing into the screw hole (57) drilled at the bottom of the surface. I get kicked.

[0055] The square notches (55) are provided on both sides of the rear cover (36). This is a top plate book This is so that it can be used on either the left or right side of the body (3).

[0056] The corner cover (37) has a front shape that matches the edge material (16) of the top plate body (3). , has an upper hook (4) on its inner surface that can engage with the hook receiver (45) of the rear cover (36). 7), and a lower hook (48) that can engage with the inner lower edge of the cover holding portion (26) of the mounting body (21). It is equipped with

[0057] Install the rear cover (36) by inserting its tongue (44) into the slit (30) of the circuit board (21a). After attaching the cover, place the corner cover (37) over the cover holding part (26) and attach the upper hook (47). Insert the lower hook (48) into the hook holder (45) of the rear cover (36) and the lower hook (48) of the cover holder (26). By engaging with the lower edge of the inner surface, the rear cover (36) and the corner part The cover (37) is installed.

[0058] Note that the upper edge of the semicircular part of the cover holding part (26) of the mounting body (21) is attached to the rear cover. The hook receiver (45) of (36) and the upper hook (47) of the corner cover (37) can fit together. A notch (49) is provided (see Figure 2).

[0059] Figure 4 shows the assembled state of the top plate of the above embodiment, with the front cover (35) in position. The cross-sectional view, FIG. 5, is a cross-sectional view also shown at the position of the rear cover (36).

[0060] As mentioned above, FIG. 4 shows the bolts (2 3) into the recessed part (7) of the top plate body (3), and hooks (4) on the front and rear of the front cover (35). 2) from above to engage the vertical receiving pieces (27) and (28) of the mounting body (21), and Insert the pieces (41) into the slits (29) of the base plate (21a) of the mounting body (21), and The cover (35) is shown attached to the mounting body (21).

[0061] In addition, when installing optional equipment, before installing the front cover (35). , remove the cover (9a) of the notch hole (10) at the required location.

[0062] The front cover (35) is attached as described above, so it can be attached or detached simply by This can be done by simply moving it downward, and there is no need to use tools such as a screwdriver. It is extremely easy to do. Also, when attaching or detaching, make sure to hold the front cover (35) to the side. There is no need to move it to the other side, so it can be easily attached and detached even if there is another desk nearby. can be done.

[0063] To install optional equipment such as lighting equipment, remove the front cover (35) and install it. Attach the equipment holder (33) to the equipment mounting base (31) of the body (21) with bolts (34). machine The device holder (33) is mounted on the slope facing outward and upward of the device mounting base (31), so the device holder (33) The lever can be inserted diagonally from above to perform tightening work, and other desks are adjacent to each other. It can be easily installed even when it is already installed.

[0064] Front view with the cover (9a) of the corresponding notch hole (10) removed after installing the device holder (33) Insert the cover (35) from above into the vertical receiver pieces (27) (28) and slit (29) of the mounting body (21). Insert the support leg of the lighting fixture (12) into the equipment holder (33) through the notch hole (10). Install.

[0065] The wiring cord (14) of the lighting fixture (12) is inserted from the bottom of the square tube of the equipment holder (33) into the cover. - Connected to the power supply through the inside of the member (8) and the hollow legs (1) of the support. Wiring can be done without exposing the line cord (14) to the outside of the desk.

[0066] Figure 5 shows the side cover (15) and mounting body (21) placed in the recess (7) of the top plate body (3). At the receiving plate (24) which is installed in layers and protrudes outward from the lower end of the mounting body (21), Through the countersink hole (25) and the through hole (20) provided in the cover plate (18) of the side cover (15), insert the countersunk head. Install the top plate body (3) by screwing the bolt (6) into the screw hole (4) provided at the rear of the leg (1). Indicates the digit state.

[0067] As mentioned above, the rear cover (36) connects the tongue piece (44) to the slit ( 30) can be inserted and installed.

[0068] Attach the corner cover (37) to the cover holding part (26) on the outer edge of the receiving plate (24). , insert the upper hook (47) into the hook receiver (45) of the rear cover (36), and the lower hook (48). Each is engaged with the lower edge of the inner surface of the cover holding part (26).

[0069] To attach, for example, a pinup board (13) to this part, first attach the left and right front Remove the cover (35) and remove the lid (9b) from the notch hole (11) of the rear cover (36). . Then, attach the left and right mounting pieces (52) attached to the sides of the pin-up board (13) to the notch holes. (11) and place it on the receiving plate (24), and screw the bolt into the screw hole (50) of the receiving plate (24) to secure it. Set.

[0070] In this case as well, the bolt tightening operation can be performed from the top of the desk, and , by removing the front cover (35), the rear cover (36) and corner cover (37) The cover (9b) of the notch hole (11) can be removed with the Even if they are adjacent, the pin-up board (13) can be easily installed.

[0071] FIG. 6 and subsequent figures show an embodiment of the invention according to claim 6.

[0072] What is shown in Figure 6 and below is basically the same as the previous embodiment, so similar parts The same reference numerals will be given to all the parts, the explanation thereof will be omitted, and only the different parts will be referred to. explain.

[0073] As shown in Figure 8, the rear end of the inner and outer edges of the rear cover (36) is not cut out and is At the center of the lower edge of the downwardly curved part (36a) at the rear end of the A cutting piece (61) surrounded by a guide line (60) is provided.

[0074] When the cut piece (61) is separated along the cutting guide line (60), a square hole (62) is easily formed. Ru.

[0075] There is a slight gap between the top plates (3) (3) of the opposing desks, and within this gap, The upwardly opening receiving gutter (63) is properly fitted.

[0076] Horizontal support pieces (64) (64) facing outward are protruded from key points on both sides of the receiving gutter (63), and each support piece (64) passes through the square hole (62) of the rear cover (36) and overlaps on the receiving plate (24) of the mounting plate (21). , by screwing the screw (66) inserted into the through hole (65) of the receiving piece (64) into the screw hole (50), The receiving piece (64) and thus the receiving gutter (63) are fixed.

[0077] A cover plate (67) is fitted into the upper opening of the receiving gutter (63). On the side wall (68) of the gutter (63) , a rectangular cut guide line (69) is provided from its upper edge.

[0078] The receiving gutter (63) can be installed as needed, and the wiring (70) etc. can be accommodated in it. It will be done.

[0079] Only when installing the receiving gutter (63), make a square hole (62) in the downward curved part (36a) of the rear cover (36). is opened and the downwardly curved part (36a) of the rear cover (36) is closed when the receiving gutter (63) is not installed. It remains the same.

[0080]

[Effect of the idea]

(1) Conventional methods for attaching optional equipment such as pin-up boards and lighting equipment Unlike a vise, etc., it does not protrude around the top plate, so you can use it to protect your desk from other adjacent desks. It can be installed close to the wall without any gaps, making space efficient. Not only can they be used effectively, but they can also be arranged in an attractive manner.

[0081] (2) Optional equipment can be attached and detached only from the top of the top plate. There is no need to widen the space between adjacent desks when attaching and detaching, and the desk can be moved. Annoyances are eliminated.

[0082] (3) When optional equipment is removed, the notch hole in the mounting part should be flush with the cover. It is closed by a lid forming an area, and the effective area of the top plate is secured.

[0083] (4) Recesses are formed symmetrically on both sides of the rear end of the top plate, and the mounting body and cover part Because the materials are arranged symmetrically, the entire width of the top plate of a pin-up board, etc. Supports optional equipment on both the left and right ends and allows for stable installation. Wear.

[0084] (5) Small optional equipment such as lighting equipment that can be supported only on one side may be difficult to use. You can select the left or right position and install it according to your needs.

[0085] (6) Route the wiring cords of electrical appliances installed on the top board through the cover member. Because the cable can be wired, the cord is not exposed on the outside of the desk, making it possible to route the cables in an attractive manner, as well as to avoid unnecessary wires. There is a risk that you may accidentally trip the cord and cause the appliance to fall or the cord to be cut. There is no such thing.

[0086] (7) Easily install a receiving gutter for accommodating wiring, etc. between desks placed opposite each other. be able to.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a desk equipped with an embodiment of the top plate of the present invention.

FIG. 2 is an exploded perspective view showing essential parts of the embodiment.

FIG. 3 is an exploded perspective view of the cover member viewed from below.

FIG. 4 is a sectional view of the seat plate portion.

FIG. 5 is a sectional view of the device mounting base portion.

FIG. 6 is a partially cutaway perspective view showing a state in which two desks equipped with another embodiment of the top plate of the present invention are arranged facing each other.

7 is an exploded perspective view showing main parts of the embodiment shown in FIG. 6. FIG.

FIG. 8 is a perspective view of the rear cover in FIGS. 6 and 7, viewed from the rear and upper side.

FIG. 9 is an enlarged sectional view taken along line IX-IX in FIG. 6;

[Explanation of symbols]

(1) Legs (2) Connecting members (3) Top plate body (4) Bolts (5) Screw hole (6) Countersunk bolt (7) Recessed part (8) Cover member (9)(9a)(9a) Lid (10)(11) Notch hole (12) Lighting equipment (13) Pinup board (14) Wiring cord (15) Side cover (16) Edge material (17) Shaping material (18) Cover plate (19) Through hole (20) Through hole (21) Mounting body (21a) Board part (22) Through hole (23) Bolt (24) Receiving plate (25) Countersunk hole (26) Cover holding part (27)(28) Vertical receiving piece (29)(30) Slit (31) Equipment mounting base (32) Screw hole (33) Equipment holder (34) Bolt (35) Front cover (36) Rear cover (36a) Downward curved part (37) Corner part cover (38) Top plate (39) Side plate (40) Orthopedic part (41) Tongue piece (42) Hook (43) Guide rail (44) Tongue piece (45) Hook holder (46) Guide rail (47) Upper hook (48) Lower hook (49) Notch (50) Screw hole (51) Support piece (52) Mounting piece (53) Screw (54)Through hole (55)Notch (56) Through hole (57) Screw hole (60) Cut guide line (61) Resection piece (62) Square hole (63) Receiving gutter (64) Receiver piece (65) Through hole (66) Screw (67) Lid plate (68) Side wall (69) Cut guide line (70) Wiring

Claims (7)

[Scope of utility model registration request] 1. A top plate main body having a rectangular recess formed in a rear end of a side edge, a mounting body comprising a receiving plate fixed to a side surface of the recess and horizontally protruding outward; The entrance has a shape that covers the mounting body and matches the side edge of the top plate,
It can be attached and detached by the engagement means provided on the mounting body,
and a cover member having a cutout hole with a removable lid above a position corresponding to the receiving plate and the device mounting base in the mounting body. [Claim 2] Rectangular recesses are symmetrically formed in the rear ends of both side edges of the top plate body, and a pair of symmetrical mounting bodies and cover members are attached to the corresponding recesses. The desk top plate according to claim 1, characterized in that: 3. The desk top plate according to claim 1, wherein the mounting body is provided with an outwardly projecting device mounting base having a sloped surface on the upper side that slopes outwardly and downwardly. 4. A cover holding part for holding the cover member is provided on the outside of the receiving plate at the rear end of the mounting body, and a slit for attaching the cover member is carved on the upper surface of the base plate of the mounting body, 3. The desk top plate according to claim 1, wherein the inner edge of the cover member is held by inserting a tongue piece hanging from the inner edge of the cover member into the slit. 5. The desk top according to claim 1, wherein the cover member is divided into a rear cover that covers a receiving plate portion of the mounting body and a front cover that covers a device mounting base portion. Board. [Claim 6] A downwardly curved portion is provided at the rear end of the rear cover,
In addition, a square hole is easily formed in this downwardly curved portion, through which a receiving piece that protrudes from a receiving gutter disposed at the rear edge of the top plate body and can overlap with the receiving plate at the rear end of the mounting body passes through. 6. The desk top plate according to claim 5, further comprising a curved cut guide line. 7. Passing a wiring cord to an electrical device placed on the top plate from a hollow support supporting the top plate, through the inside of the cover member, and through a through hole on the top surface of the device mounting base; The desk top plate according to any one of claims 1 to 6, which is connected to an electrical device.