JP2019076392A - Desk with liftable top plate - Google Patents

Abstract

To provide a desk with a motor-driven liftable top plate facilitating wiring work to a control unit to improve maintenance performance.SOLUTION: A desk 1 with a liftable top plate includes: a top plate 2; a beam member group 3 mounted on the under surface of the top plate 2; leg parts 5 each having a motor-driven liftable unit 4 moving the top plate 2 and the beam member group 3 in a vertical direction; and a control unit 6 controlling the operation of the motor-driven liftable units 4. The control unit 6 is set below the beam member group 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a desk with a lift top plate.

  A desk with a lift and a top plate which can adjust the height of a top plate conventionally is known (for example, refer to patent documents 1 and 2). By adjusting the height of the top according to the desk users' work gap and standing position, desk users can keep their ideal posture and demonstrate their ability efficiently and effectively it can.

  In addition, as an elevation unit for moving the top plate in the vertical direction, an electric type is known (see, for example, Patent Document 3). Such an electric elevating unit is configured to be able to expand and contract in the vertical direction by driving of an electric motor. The operation of the elevating unit is controlled by a control unit separately attached to the desk with elevating table.

JP, 2017-79890, A Unexamined-Japanese-Patent No. 2016-202883 JP-A-2017-519546

  In a desk with a lift top plate, a control unit that controls the operation of the motorized lift unit is often disposed inside a beam member attached to the lower surface of the top plate (see, for example, Patent Documents 1 and 2). ). However, when the control unit is disposed inside the beam member, it is difficult to perform wiring work to the control unit, and maintenance can not be said to be good, and there is room for improvement. For example, when the size of the top plate becomes smaller, wiring work to the control unit becomes more difficult, for example, another beam member approaches the beam member accommodating the control unit.

  The present invention has been made to improve such a current situation, and it is an object of the present invention to facilitate maintenance work by facilitating wiring work to a control unit in a desk with an electric lift board. It is.

  The elevating table with desk according to the present invention includes a top plate, a beam member attached to the lower surface of the top plate, and a leg portion having an electric elevating unit for moving the top plate and the beam member vertically. A control unit configured to control an operation of the elevating unit, wherein the control unit is disposed below the beam member.

  According to the desk with the elevator top plate of the present invention, since the control unit is disposed below the beam member, the beam member does not get in the way when wiring to the control unit, and the wiring operation becomes easy. Maintenance is improved. Further, for example, even when the size of the top plate is small, the beam member does not disturb the wiring operation to the control unit, and the maintenance property is improved. It can be placed below the center of the board), and the overall appearance of the desk in a side view can be improved.

  In the desk with elevating table according to the present invention, the unit support member for supporting the control unit may be provided with a placing portion on which an article can be placed.

  According to this aspect, when the unit support member includes the mounting portion, an article such as a power supply tap or wiring can be mounted on the mounting portion, and the article storage property is improved.

  Furthermore, the top plate may have an opening above the unit support member.

  According to this aspect, wiring such as a power cable and a LAN cable can be connected to the electronic device or the like placed on the top plate from the lower side of the top plate through the opening, and wiring can be made from the periphery of the top plate The wiring does not disturb the desk user and the appearance is improved because the need for hanging is eliminated. In addition, the desk user can access the mounting portion of the unit support member from the upper side of the top plate, and the convenience is improved.

  Further, in the desk with elevating top plate of the present invention, the terminal connection portion of the elevating unit is disposed at a height position between the lower surface of the top plate and the lower surface of the beam member; At least an operator finger may be inserted between the beam member and the beam member.

  According to this aspect, since the wiring work to the lifting and lowering unit becomes possible in the state where the top plate is assembled, the assembling workability and the maintenance property of the desk are good.

  Since the control unit is disposed below the beam member in the elevating table with desk of the present invention, the wiring operation to the control unit becomes easy, and the maintainability is improved.

It is a figure which shows one Embodiment, (A) is a front view, (B) is a side view. It is a figure which shows the embodiment, (A) is the perspective view seen from diagonally upper, (B) is the perspective view seen from diagonally lower. It is the perspective view which looked the beam member of the embodiment, a unit support member, etc. from diagonally up. It is a bottom view of the beam member, a unit support member, etc. (A) is an AA cross-sectional view of FIG. 4, (B) is a BB cross-sectional view of FIG. 4. It is an exploded perspective view of a beam member, a unit support member, a control unit, etc. (A) is a perspective view of the unit support member viewed obliquely from above, and (B) is a perspective view of the unit support member viewed obliquely from below. It is a figure for demonstrating the connection state of wiring, and is the perspective view seen from diagonally upper. It is a figure for demonstrating the connection state of wiring, and is the perspective view seen from diagonally downward. It is a figure which shows other embodiment, (A) is a front view, (B) is a side view. It is a figure which shows the embodiment, (A) is the perspective view seen from diagonally upper, (B) is the perspective view seen from diagonally lower. It is the perspective view which looked the beam member of the embodiment, a unit support member, etc. from diagonally up. It is a bottom view of the beam member, a unit support member, etc. (A) is a cross-sectional view taken along the line C-C in FIG. 13; (B) is a cross-sectional view taken along the line D-D in FIG. It is an exploded perspective view of a beam member, a unit support member, a control unit, etc. (A) is a perspective view of the unit support member viewed obliquely from above, and (B) is a perspective view of the unit support member viewed obliquely from below. It is a figure for demonstrating the connection state of wiring, and is the perspective view seen from diagonally upper. It is a figure which expands and shows the operation switch periphery, (A) is a top view, (B) is the perspective view seen from diagonally above.

  Next, an embodiment of the present invention will be described based on the drawings. In this specification, for the sake of convenience, in order to specify the direction, front and rear, left and right wording is used, but in the front, rear, left and right directions, the direction in which the pair of legs 5 and 5 are arranged is the left and right direction. The direction orthogonal to the left and right direction is referred to as the front and back direction. Further, the side on which the operation switch 15 is disposed is referred to as the front side. In addition, this invention is not limited to the structure in the direction specified by embodiment described below.

  As shown in FIGS. 1 and 2, the desk 1 with a lift (hereinafter simply referred to as the desk 1) includes a top 2, a beam member group 3 attached to the lower surface of the top 2, and a top 2. And the leg part 5 which has the electrically-driven raising / lowering unit 4 to which the beam member group 3 is moved to an up-down direction, and the control unit 6 which controls operation | movement of the raising / lowering unit 4 are provided. The control unit 6 is disposed below the beam member group 3.

  In this embodiment, the pair of legs 5 and 5 are spaced apart in the left-right direction (width direction). Each leg 5 includes a ground contact leg 7 disposed on the floor surface and a lifting unit 4 provided upright on the ground contact leg 7. The ground contact leg 7 is extended in the front-rear direction. At the front and rear end portions of the lower surface of the ground contact leg 7, an adjuster 8 is provided to adjust the height and level of the leg portion 5.

  Front and rear center portions of the pair of ground contact legs 7 are connected to each other by a lower beam member 9 extending in the left-right direction. The lower end of a lifting unit 4 extending in the vertical direction is connected to the center of the upper surface of the grounding leg 7. The upper ends of the lifting units 4 and 4 are connected to a pair of arm members 10 and 10 mounted on the lower surface of the top plate 2 so as to be separated in the left-right direction.

  The lifting unit 4 is configured to be extensible and contractible in the vertical direction. Specifically, the lifting unit 4 includes a housing portion 11 for accommodating a driving source such as an electric motor, an inner cylindrical member 12 connected to the lower surface of the housing portion 11, and an intermediate portion covered on the outer periphery of the inner cylindrical member 12. A cylindrical member 13 and an outer cylindrical member 14 covered on the outer periphery of the intermediate cylindrical member 13 are provided. The cylindrical members 12, 13, 14 are each formed in a cylindrical shape extending in the vertical direction.

  Inside the housing portion 11 and the cylindrical members 12, 13 and 14, a drive mechanism for moving the cylindrical members 12 and 13 up and down with respect to the outer cylindrical member 14 is provided. The elevating unit 4 can be expanded and contracted in the vertical direction by operating the drive mechanism by a drive source such as an electric motor in the housing portion 11. Thus, the leg portion 5 supports the top plate 2, the beam member group 3 and the arm member 10 so as to be able to move up and down.

  The top 2 is substantially square in a plan view, and is provided with an opening 2a penetrating in the vertical direction at the central portion thereof. Two cover bodies 2b and 2b are detachably disposed in the opening 2a. Cover bodies 2b and 2b are mounted on four cover body support members 2c (refer to Drawing 5) attached to the undersurface of top plate 2 so that an end might be exposed to opening 2a. Further, on the lower surface of the left end portion of the front end portion of the top plate 2, an operation switch 15 for performing an operation input for extending and retracting the elevating unit 4 is attached.

  As also shown in FIGS. 3 and 4, a beam member group 3 having a plurality of beam members 16, 17 and 18 and a pair of arm members 10 and 10 are attached to the lower surface of the top plate 2. The arm member 10 includes an arm cylindrical portion 19 extending in the front-rear direction, and a housing attaching portion 20 which is provided to protrude laterally from a central portion of the arm cylindrical portion 19.

  The arm cylinder portion 19 and the housing attachment portion 20 are attached to the lower surface of the top plate 2 by a plurality of bolts 21. The housing portion 11 of the elevating unit 4 is accommodated and fixed in the housing attachment portion 20, whereby the upper portion of the elevating unit 4 (leg portion 5) and the arm member 10 are connected.

  A groove portion extending in the front-rear direction is formed on the lower surface of the arm cylinder portion 19, and a resin arm cover member 22 extending in the front-rear direction is detachably attached to the groove portion. Further, an arm cap member 23 made of resin is detachably attached to front and rear end portions of the arm cylindrical portion 19.

  The beam member group 3 includes a pair of front and rear inner beams 16 and 16, a pair of front and rear outer beams 17 and 17, and a pair of left and right reinforcing beams 18 and 18. The beam members 16 and 17 extend in the left-right direction, and the reinforcing beam members 18 extend in the front-rear direction.

  The pair of front and rear inner beam members 16 and 16 are disposed across the opening 2a of the top 2 in a plan view. The left and right end portions of the inner beam members 16, 16 are connected to the arm cylinder portions 19, 19. The pair of front and rear outer beam members 17 and 17 are disposed with the inner beam members 16 and 16 interposed therebetween, and are connected to the arm cylinder portions 19 and 19 at positions outside the inner beam member 16 in the front and rear direction. The beam members 16 and 17 are attached to the lower surface of the top 2 by a plurality of bolts 24 and 25. Both end portions of the inner beam members 16, 16 are fixed by a bolt 24a and a nut 24b to a pair of front and rear brackets 19a, 19a protruding laterally on the opposite side surfaces of the arm cylindrical portions 19, 19 (see FIG. See also 5 (B)).

  The pair of left and right reinforcing beam members 18, 18 are disposed across the opening 2a of the top 2 in a plan view. The front and rear end portions of the reinforcing beam members 18, 18 are fixed to the inner beam members 16, 16, respectively. Specifically, with the end portions of the reinforcing beam members 18, 18 inserted into the left and right notches 16b, 16b provided in the inner side wall portion 16a of the inner beam member 16, the beam members 16, 18 They are fixed by welding or the like. In this embodiment, the reinforcing beam members 18 and 18 are not fixed to the top plate 2 but are bridged to the inner beam members 16 and 16.

  As shown also in FIGS. 5 and 6, a unit support member 26 for supporting the control unit 6 is attached to the bottom portions 18 a and 18 a of the reinforcing beam members 18 and 18. The unit support member 26 includes a pair of left and right arms 27 and 27 and a main body 28 connected to the lower ends of the arms 27 and 27. The main body portion 28 is disposed below the opening 2 a of the top 2.

  As also shown in FIG. 7, the arm portion 27 includes a mounting surface 27a extending in the front-rear direction, a pair of front and rear slopes 27b and 27b extending obliquely downward from the inner side in the left-right direction of the mounting surface 27a, And a connecting portion 27c which connects the lower ends of the inclined portions 27b and 27b. The mounting surface portion 27a is provided with a pair of front and rear mounting holes 27d. The mounting hole 27d is formed in a keyhole shape in which the large diameter hole 27e and the small diameter hole 27f are connected. The diameter of the large diameter hole 27e is larger than the diameter of the head of the support member attachment bolt 29 for attaching the unit support member 26 to the reinforcing beam member 18, and the diameter of the small diameter hole 27f is the head of the support member attachment bolt 29 Less than diameter. Thus, the unit support member 26 can be attached and detached without removing the support member attachment bolt 29 from the reinforcing beam member 18.

  A pair of front and rear bolt insertion holes 18b and 18b (see FIG. 6) penetrating in the vertical direction is formed in the bottom surface portion 18a of the reinforcing beam member 18, and bolt insertion holes 18b and 18b are formed in the top surface of the bottom surface portion 18a. The nuts 18c and 18c are fixed in correspondence with the position of (see FIG. 5 (B)). The unit support member 26 is fixed to the reinforcement beam member 18 by inserting the support member attachment bolt 29 from the lower side into the attachment hole 27 d of the unit support member 26 and the bolt insertion hole 18 b of the reinforcement beam member 18 from below. Be supported.

  The main body portion 28 of the unit support member 26 is disposed downward from the front and rear end portions of the top surface portion 28a and the horizontally long upper surface portion 28a disposed at the height position between the mounting surface portion 27a of the arm portion 27 and the connecting portion 27c. A pair of front and rear side wall portions 28b and 28b protruding toward the front, a pair of front and rear extending portions 28c and 28c extending outward from the lower end of the side wall portions 28b and 28b, and an extending portion 28c, A pair of front and rear outer wall portions 28d and 28d are provided so as to project obliquely outward from the front and rear outer end portions of 28c. At the front and rear end portions of the surface portions 28a, 28b, 28c, and 28d and at the upper end portion of the outer wall surface portion 28d, folded back portions 28e are formed.

  At the front and rear end portions of the lower end portion of the side wall portion 28b of the main body portion 28, slits 28f, 28f extending in the left-right direction are formed. The connecting portion 27c of the arm portion 27 is inserted into the slit 28f, and the connecting portion 27c is fixed to the left and right end portions of the upper surface of the extending portion 28c.

  The control unit 6 is disposed with respect to the unit support member 26 in a unit disposition space surrounded by the upper surface portion 28 a and the side wall portions 28 b and 28 b of the main body portion 28. Both side surfaces in the left-right direction of the control unit 6 constitute terminal connection surfaces 6a and 6a on which sockets to which wiring terminals such as wiring connectors and power plugs are connected are disposed. With the control unit 6 supported by the unit support member 26, the terminal connection surfaces 6a, 6a are exposed in the left-right direction, and between the inclined portions 27b, 27b of the arm portion 27 with respect to the terminal connection surface 6a. The wiring terminals 33b, 34a, 35a (see FIGS. 8 and 9) can be inserted and removed via spaces.

  As described above, since the control unit 6 is disposed below the beam members 16, 17, 18, the beam members 16, 17, 18 do not get in the way when wiring to the control unit 6, and the wiring Work becomes easy and maintainability improves. Furthermore, since the wiring work to the control unit 6 can be performed without removing the top plate 2, the maintenance property is good.

  As also shown in FIG. 7, the distance between the connecting portions 27 c and 27 c of the left and right arms 27 and 27 is set wider than the dimension of the control unit 6 in the left and right direction. It is configured to be able to be put in and out of the arrangement space. That is, the control unit 6 is configured to be removable from the unit support member 26 in a state where the unit support member 26 is attached to the reinforcing beam member 18.

  On the lower surface of the upper surface portion 28a, a unit mounting member 30 having a unit mounting surface portion 30a disposed at an interval from the lower surface of the upper surface portion 28a is fixed. A pair of left and right bolt insertion holes 30b, 30b are formed in the unit mounting surface 30a. A pair of left and right nuts 31, 31 are fixed to the upper surface of the unit mounting surface 30a in correspondence with the positions of the bolt insertion holes 30b, 30b. The control unit 6 is also provided with a pair of left and right bolt insertion holes 6b, 6b penetrating in the vertical direction, and the unit mounting bolt 32 is attached to the nut 31 from the lower side via the bolt insertion holes 6b, 30b. Thus, the control unit 6 is fixedly supported by the unit support member 26.

  As described above, since the direction in which the control unit 6 is inserted into and removed from the unit support member 26 and the direction in which the two unit mounting bolts 32 and 32 are attached are the same in the vertical direction, the control unit 6 to the unit support member 26 is Work efficiency is good regarding the attachment and detachment work. When assembling the desk 1, when the lower surface of the top plate 2 is directed upward to assemble the beam member group 3, the arm member 10, etc., various bolts 21, 24, 24a, 25 are used. , 25, 32, etc. are attached from the upper side.

  The unit support member 26 not only supports the control unit 6 but also functions as an article placement member such as a wiring receiver. That is, the upper surface of the main body portion 28 of the unit support member 26, particularly the upper surfaces of the upper surface portion 28a and the extending portions 28c, 28c, constitutes the mounting portion 26a on which articles such as a power tap and a cable (wiring) can be mounted. Do. As the unit support member 26 includes the placement portion 26 a, the article storability of the desk 1 is improved. Furthermore, since the control unit 6 is attached to the lower surface of the main body 28 of the unit support member 26, the control unit 6 gets in the way when performing wiring processing etc. through the opening 2a of the top plate 2 in use. There is no negative impact on aesthetics because it is invisible and invisible.

  In addition, as shown in FIGS. 3, 5 and 6, etc., the unit mounting bolt 32 and nut 31 for mounting the control unit 6 to the unit support member 26 are exposed on the upper surface of the unit support member 26 (upper surface portion 28a). I did not. As a result, the aesthetics of the upper surface of the unit support member 26 which can be visually recognized through the opening 2a of the top plate 2 can be improved, and problems such as the wiring placed on the placement portion 26a being caught on the bolt or nut can be prevented. .

  Further, the top plate 2 includes an opening 2 a above the unit support member 26. Therefore, wiring such as a power cable and a LAN cable can be connected to the electronic device and the like placed on the top 2 from the lower side of the top 2 through the opening 2 a. Since this eliminates the need to hang the wiring from the peripheral edge of the top plate 2, the wiring does not interfere with the desk user, and the appearance is improved. Further, the desk user can access the mounting portion 26 a of the unit support member 26 from the upper side of the top plate 2, and the convenience is improved.

  In the state where the cover bodies 2b and 2b are disposed in the opening 2a, a power cable and a LAN cable are provided between the front and rear edges of the opening 2a and the cover body 2b or between the cover bodies 2b and 2b. And the like are formed in such a size that a clearance to such an extent that the wiring can be inserted is formed. Thereby, even when the wiring is inserted through the opening 2a, the falling of the article from the upper surface of the top plate 2 to the opening 2a is prevented, and the removal of the cover 2b from the opening 2a It's getting easier.

  As shown in FIGS. 8 and 9, the housings 11 and 11 of the elevating units 4 and 4 and the control unit 6 are electrically connected via a pair of elevation control cables 33 and 33. As shown in FIGS. 4 and 5B, the terminal connection portion 4 a of the lifting and lowering unit 4 is provided on the inward facing side surface 11 a of the housing portion 11. The terminal connection portion 4 a is provided at a height position between the top plate 2 and the lower surfaces of the beam members 16, 17, 18. A wiring terminal 33a on one end side of the elevation control cable 33 is connected to the terminal connection portion 4a. The wiring terminal 33 b on the other end side of the elevation control cable 33 is connected to a terminal connection portion 6 c (see also FIG. 6) provided on the terminal connection surface 6 a of the control unit 6.

  A reinforcing beam member 18 faces the inward-facing side surface 11 a of the housing portion 11 in the left-right direction. A notch 18e through which the elevation control cable 33 and the wiring terminal 33a can be inserted is formed at the center of the upper edge portion of the outer side wall 18d of the reinforcing beam member 18. Further, an opening 18g through which the elevation control cable 33 and the wiring terminal 33a can be inserted is formed at a central portion of the inner side wall 18f of the reinforcing beam member 18. The middle portion of the lifting control cable 33 is supported by the reinforcing beam member 18 by wiring the lifting control cable 33 through the notch 18 e and the opening 18 g.

  In addition, an interval W (see FIG. 4) is provided between the reinforcing beam member 18 and the terminal connection portion 4a so that at least a finger of the worker can enter. Thereby, even in a state where the top plate 2 is attached to the arm member 10 and the beam members 16 and 17, the worker can attach and detach the wiring terminal 33a to the terminal connection portion 4a from the lower side. As described above, since the wiring work to the lifting and lowering unit 4 can be performed in the state where the top plate 2 is assembled, the assembling workability and the maintenance property of the desk 1 are improved.

  In addition, a power terminal connection portion 6d to which a power terminal (power plug) 34a of a power cable 34 for supplying power to the control unit 6 is connected to one terminal connection surface 6a of the control unit 6 (see also FIG. 6) ) Is provided. The other terminal connection surface 6a is provided with a terminal connection portion (not shown) to which the wiring terminal 35a of the operation switch wiring 35 extending from the operation switch 15 (see FIGS. 1-3) is connected.

  As described above, the control unit 6 is disposed below the beam members 16, 17, 18. Further, the terminal connection surfaces 6a, 6a of the control unit 6 are exposed in the left-right direction. Therefore, even if the top plate 2 and the control unit 6 are not removed, the work of attaching and detaching the wiring terminals 33 b and 35 a and the power supply terminal 34 a to the control unit 6 can be easily performed.

  The operation switch wiring 35 connected to the operation switch 15 passes from the front and rear end portions of one arm member 10 to the inside of the arm cylindrical portion 19, the inside of the one inside beam member 16 and the inside of the one reinforcing beam member 18. And is pulled out of the opening 18g.

  As shown in FIGS. 3 and 5B, in the inner side wall 19b of the arm cylinder 19, the pair of front and rear wire insertion holes 19c, 19c are operated corresponding to the connection position of the inner beam members 16, 16. The switch wiring 35 and the wiring terminal 35 a can be inserted through the opening 35. Further, the upper end portion of the inner side wall portion 16 a of the inner beam member 16 is disposed with a clearance H 1 between the upper end portion and the lower surface of the top plate 2. The upper end portions of the side wall portions 18 d and 18 f of the reinforcing beam member 18 are disposed with a gap H 2 between them and the top plate 2. The clearances H1 and H2 are formed in such sizes that the operation switch wiring 35 and the wiring terminal 35a can be inserted. Further, as described above, the arm cover member 22 and the arm cap member 23 of the arm member 10 are detachably provided to the arm cylindrical portion 19.

  That is, the operation switch wiring 35 can be wired in the arm cylinder portion 19 by removing the arm cover member 22 and the arm cap member 23 with the top plate 2 attached. Further, by utilizing the gap H1 between the top plate 2 and the inner side wall portion 16a of the inner beam member 16 and the gap H2 between the top plate 2 and the reinforcing beam member 18, the wiring terminal of the operation switch wiring 35 35a is taken out from the arm cylindrical portion 19 side to the inner beam member 16 side through the wiring insertion hole 19c, and further from the inside of the reinforcing beam member 18 to the unit support member 26 side (control unit 6 side) through the opening 18g. It is configured to be removable. That is, in a state where the top plate 2 is attached, the operation switch wiring 35 can be wired inside the arm cylinder portion 19, the inner beam member 16 and the reinforcing beam member 18.

  As described above, since the wiring operation of the operation switch wiring 35 can be performed in a state where the beam member group 3, the leg 5, the arm member 10 and the like are assembled to the top plate 2, the beam member group 3 and the like are assembled to the top plate 2. In addition, the operation switch wiring 35 does not get in the way and the assembly workability is good. Further, for example, when the operation switch 15 or the wiring terminal 35a is broken, the operation switch wiring 35 is broken, the wiring terminal 35a is broken, etc., the operation switch 15 and the operation switch wiring 35 are removed without removing the top plate 2 and the like. As it is replaceable, maintainability is good.

  As described above, the desk 1 vertically moves the top 2, the beam members 16, 17 and 18 attached to the lower surface of the top 2, and the top 2 and the beams 16, 17 and 18. The control unit 6 is provided below the beam members 16, 17 and 18 with the leg portion 5 having the electric lifting unit 4 and the control unit 6 for controlling the operation of the lifting unit 4. At the time of the wiring work to 6, the beam members 16, 17, 18 do not get in the way, the wiring work becomes easy, and the maintainability improves.

  Further, in the desk 1, the control unit 6 is disposed at a height position lower than the terminal connection portions 4 a and 4 a of the lifting and lowering units 4 and 4, so that the size of the top 2 can be reduced. That is, even when the distance between the elevating units 4 is narrow, the terminal connection surfaces 6a and 6a of the control unit 6 and the terminal connection portions 4a and 4a are disposed at different heights, While arranging the control unit 6 between the lifting and lowering units 4 and 4 in plan view, it is possible to secure spaces for connecting wiring terminals such as plugs to the terminal connection surfaces 6a and 6a and the terminal connection portions 4a and 4a.

  As described above, in the structure in which the control unit 6 is disposed at a height position lower than the terminal connection portions 4a and 4a of the lifting and lowering units 4 and 5, the control unit 6 and the unit are reduced even if the size of the top plate 2 is reduced. The support member 26 can be disposed between the elevating units 4 and 4 (central part of the top 2 in a plan view), and the appearance of the entire desk in a side view can be improved.

  Next, another embodiment will be described based on FIGS. In this embodiment, parts common to the above-described embodiment described with reference to FIGS. 1 to 9 are denoted by the same reference numerals in the drawings, and descriptions thereof will be omitted unless necessary.

  As shown in FIGS. 10 and 11, a desk 1A with an elevator top plate (hereinafter, also simply referred to as desk 1A) includes a top plate 2 that is substantially circular in plan view. Similarly to the desk 1 (see FIGS. 1 to 9) having a substantially square top plate on the lower surface of the top plate 2, the pair of left and right arm members 10, 10, the pair of front and rear inner beam members 16, 16 and operation The switch 15 is attached. The operation switch 15 is disposed at the right front portion of the top 2. A pair of left and right legs 5 and 5 having a lifting unit 4 are connected to the arm members 10 and 10. The desk 1 </ b> A does not include the outer beam members 17 and 17 and the reinforcing beam members 18 and 18 provided on the desk 1.

  As also shown in FIGS. 12 to 15, unit support members 26 for supporting the control unit 6 are attached to the bottom portions 16 c and 16 c of the pair of front and rear inner beam members 16 and 16. The main body portion 28 of the unit support member 26 is disposed below the lower surfaces of the inner beam members 16, 16. In the desk 1A, the arm sections 27, 27 of the unit support member 26 are disposed in the front-rear direction with respect to the main body section 28.

  As also shown in FIG. 16, the mounting surface 27a of the arm 27 extends in the left-right direction. A pair of left and right inclined portions 27b, 27b extend obliquely downward from the inner side in the front-rear direction of the mounting surface portion 27a. The lower ends of the inclined portions 27b, 27b are connected by a connecting portion 27c extending in the left-right direction. In the main body portion 28, slits 28g and 28g extending in the left-right direction are formed at the central portion of the lower end portion of the outer wall surface portion 28d. The connecting portion 27c of the arm portion 27 is inserted into the slit 28f, and the connecting portion 27c is fixed to the front and rear outside portions of the upper surface of the extending portion 28c.

  A pair of left and right bolt insertion holes 16d, 16d (see FIG. 15) penetrating in the vertical direction is formed in the bottom surface portion 16c of the inner beam member 16, and bolt insertion holes 16d, 16d are formed in the upper surface of the bottom surface portion 16c. The nuts 16e, 16e are fixed in correspondence with the position of (see FIG. 14 (B)). The unit support member 26 is fixedly supported on the inner beam member 16 by inserting the support member attachment bolts 29 from the lower side into the attachment holes 27 d and the bolt insertion holes 16 d of the unit support member 26 and attaching them to the nuts 16 e.

  Also in the desk 1A, the control unit 6 is disposed with respect to the unit support member 26 in a unit disposition space surrounded by the upper surface portion 28a and the side wall portions 28b and 28b of the main body portion 28. That is, the control unit 6 is disposed below the inner beam members 16, 16. Further, similarly to the configuration of the desk 1, the terminal connection surfaces 6a and 6a (both side surfaces in the left and right direction) of the control unit 6 are exposed in the left and right direction, and the wiring terminals 33b, 34a and 35a with respect to the terminal connection surface 6a. It is configured to be removable (see FIG. 17).

  As described above, since the control unit 6 is disposed lower than the inner beam members 16 and 16, the inner beam members 16 and 16 do not get in the way when wiring to the control unit 6, and the wiring operation is performed. It becomes easy and maintainability improves. Furthermore, since the wiring work to the control unit 6 can be performed without removing the top plate 2, the maintenance property is good.

  Further, even in the desk 1A, the control unit 6 with respect to the unit support member 26 is the same because the direction of taking in and out the control unit 6 to the unit support member 26 and the mounting direction of the two unit mounting bolts 32, 32 are the same in the vertical direction. Work efficiency is good regarding the attachment and detachment work of 6.

  Furthermore, also in the desk 1A, the upper surface of the main body portion 28 of the unit support member 26 constitutes the placement portion 26a on which articles can be placed, so that the article storage property of the desk 1 is improved. Further, since the unit mounting bolt 32 and the nut 31 are not exposed on the upper surface of the unit support member 26 (upper surface portion 28a), the upper surface of the unit support member 26 visible through the opening 2a of the top plate 2 While being able to improve the aesthetics, it is possible to prevent a problem in which a wire or the like placed on the placement portion 26a is caught on a bolt or a nut.

  Further, in the desk 1A as well, the top plate 2 is provided with the opening 2a at the central portion (above the unit support member 26), so wiring such as a power cable or LAN cable is made of the top plate 2 via the opening 2a. It can be taken out to the top side. Therefore, such wiring does not disturb the desk user, and the appearance is improved. Further, the desk user can access the mounting portion 26 a of the unit support member 26 from the upper side of the top plate 2, and the convenience is improved.

  As shown in FIG. 17, the housing portions 11 and 11 of the elevating units 4 and 4 and the control unit 6 are electrically connected via a pair of elevation control cables 33 and 33. In the desk 1A, no beam member or the like exists between the pair of left and right terminal connection portions 4a, 4a provided on the inward facing side surfaces 11a, 11a of the housing portions 11, 11. That is, there is no obstacle facing the terminal connection portion 4a. As a result, the work of attaching and detaching the wiring terminal 33a to the terminal connection portion 4a of the lifting and lowering unit 4 is further facilitated. In addition, since the terminal connection surface 6a of the control unit 6 is exposed in the left-right direction, the work of attaching and detaching the wiring terminal 33b to the terminal connection portion 6c (see also FIG. 15) of the control unit 6 can be easily performed.

  A pair of left and right openings 16 f is formed in the inner side wall 16 a of the inner beam member 16. The opening 16 f has a size that allows the operation switch wiring 35 and the wiring terminal 35 a to be inserted. The operation switch wiring 35 connected to the operation switch 15 is drawn from the opening 16 f from the front and rear end portions of one arm member 10 through the inside of the arm cylinder 19 and the inside of the one inner beam member 16.

  Further, a gap H1 is formed between the upper end of the inner side wall 16a of the inner beam member 16 and the lower surface of the top plate 2 to such an extent that the operation switch wiring 35 and the wiring terminal 35a can be inserted. Therefore, even in the state where the top plate 2 is attached, the wiring terminal 35a of the operation switch wiring 35 is used as an arm cylinder by utilizing the gap H1 between the top plate 2 and the inner side wall portion 16a of the inner beam member 16. It is configured that it can be taken out from the portion 19 side to the inner beam member 16 side through the wiring insertion hole 19c and further taken out to the unit support member 26 side (control unit 6 side) through the opening 16f. That is, even with the desk 1A, with the top plate 2 attached, the operation switch wiring 35 can be wired inside the arm cylinder portion 19, the inner beam member 16 and the reinforcing beam member 18, and the desk 1A is assembled And maintainability are improved.

  Further, as shown in FIG. 18, flat side surface portions 2 d are provided on the side surfaces of the top plate 2 that is substantially circular in plan view, corresponding to the mounting positions of the operation switches 15. The operation switch 15 attached to the lower surface of the top plate 2 has a substantially rectangular shape in plan view, and includes an upright portion 15 a protruding upward at the outer edge of the contact surface with the back surface of the top plate 2. That is, the operation switch 15 is formed in a substantially L shape in a side view. The standing portion 15a is formed in a linear shape in plan view, and is disposed to face the flat side portion 2d.

  As described above, by forming the portion facing the rising portion 15a of the operation switch 15 among the side surfaces of the substantially circular top plate 2 with the flat side surface portion 2d, the portion with the side surface (flat side surface portion 2d) of the top plate 2 It is possible to eliminate or reduce the gap with the portion 15a. Therefore, foreign objects such as clothes of the desk user can be prevented from entering between the side surface of the top plate 2 and the standing portion 15a, and breakage of the operation switch 15 can be prevented, and hooking of clothes etc. is prevented. The comfort of the user can be improved.

  The embodiment of the present invention has been described above. However, the present invention can be variously embodied in other ways, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the elevating desk with desk according to the present invention, the plan view shape of the top board is not limited to a substantially square or a substantially circular shape, and may be another shape such as a rectangle, a trapezoid, an L . In addition, the number of legs having the elevating unit may be one or three or more.

  Moreover, in the said embodiment, although the unit support member 26 which supports the control unit 6 is attached to the beam member 16 or 18, it may be attached to the lower surface of the top plate 2 directly or via another member. Good.

Reference Signs List 1 desk with lifting board 1A desk with lifting board 2 desk 2 top plate 2a opening 4 lifting unit 4a terminal connection part 5 leg 6 control unit 16 inner beam member 17 outer beam member 18 reinforcing beam member 26 unit support member 26a placement Part W interval

Claims (4)

A control for controlling the operation of the lifting unit, a leg having a top plate, a beam member attached to the lower surface of the top plate, an electric lifting unit for moving the top plate and the beam member in the vertical direction, and Equipped with a unit
A desk with a lift top plate, wherein the control unit is arranged below the beam member.   The elevating desk with desk according to claim 1, wherein the unit support member for supporting the control unit comprises a mounting portion on which an article can be mounted.   The desk with a lift top plate according to claim 2, wherein the top plate has an opening above the unit support member. The terminal connection portion of the elevating unit is disposed at a height position between the lower surface of the top plate and the lower surface of the beam member,
The desk with a lift top plate according to any one of claims 1 to 3, wherein an interval sufficient to allow at least an operator's finger to enter is provided between the terminal connection portion and the beam member.

Images