Top-board elevating furniture unit

Abstract

To provide a top-board elevating furniture unit with a structure that prevents wiring connected to a control device from becoming disconnected, while ensuring an available space for a user below the top board.SOLUTION: A top-board elevating furniture unit is provided with: a top board; a support body that includes an elevating device configured to move up and down the top board and supports the top board; a control device for controlling the elevating device; and an article placement tray located below the top board. The article placement tray includes a tray main body that is disposed to face the bottom of the top board with a gap therebetween, and a first projection that protrudes upward from the tray main body. The gap between the top board and the tray main body is open on a first side in a first direction intersecting the vertical direction. At least a part of the control device is exposed in the gap between the top board and the tray main body, and the control device has a connector to which wiring is connected. At least a part of the first projection is positioned on the first side with respect to the connector.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a furniture unit with a liftable top. [Background technology]

[0002] In work spaces such as offices and public facilities, desks are generally installed to provide workers with a work area. The tabletop height at which workers can easily work varies greatly from one person to another, depending on the worker's build, gender, preferences, etc. However, because a typical desk with a fixed tabletop height cannot accommodate the above-mentioned situation, desks with adjustable tabletop heights (tabletop-adjustable fixtures) have been provided in the past, allowing the tabletop height to be adjusted up and down.

[0003] By using such a desk with a height adjustable top, it is possible to provide a work area with a height of the top that meets the needs of the worker, improving work efficiency and reducing the physical burden on the worker. As a method for changing the height of the top up and down, the use of gas springs, gears, etc. have been proposed. With these methods, the structure of the desk with a height adjustable top can be made relatively simple, and the manufacturing cost of the desk with a height adjustable top can be kept low.

[0004] However, these methods have problems in that they may be difficult for weak workers to operate, and are easily affected by poor operating posture depending on the height of the tabletop. In view of these problems, the use of a lifting mechanism unit (lifting device) that can automatically change the tabletop height up and down has been proposed as a method for improving the operability of the worker (see, for example, Patent Document 1). With this method, the worker can change the tabletop height with a simple operation. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6627140 Summary of the Invention [Problem to be solved by the invention]

[0006] In such a desk with a lifting top, a control unit (control device) that controls the lifting mechanism unit may be placed in a space provided in a connecting member that connects a pair of legs to prevent the cable from coming loose due to a user accidentally touching the cable. In this case, the connecting member becomes larger to accommodate the control unit, which causes a problem that the item tray provided below the top becomes relatively small. Therefore, there is a problem that the space available to the user below the top becomes smaller.

[0007] In consideration of the above circumstances, one of the objectives of the present invention is to provide a lift-top display unit that has a structure that can prevent the wiring connected to the control device from becoming disconnected while ensuring space below the top that can be used by the user. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention employs the following aspects. (1) One aspect of the present invention's lifting table display comprises a table, a support body supporting the table and having a lifting device for raising and lowering the table, a control device for controlling the lifting device, and an item loading tray located below the table, the item loading tray having a tray main body portion facing the table below with a gap therebetween, and a first protrusion protruding upward from the tray main body portion, the gap between the table and the tray main body portion being open to a first side in a first direction intersecting the up-down direction, at least a portion of the control device being positioned so as to be exposed in the gap between the table and the tray main body portion, the control device having a connector portion to which wiring is connected, and at least a portion of the first protrusion being located on the first side of the connector portion.

[0009] According to one aspect of the lift-top display of the present invention, at least a part of the control device is exposed in the gap between the top plate and the tray body, so compared to a case where the control device is placed away from the gap, there is no need to prepare a separate space to isolate the control device, and it is easy to widen the gap between the top plate and the tray body without making the top plate lift-top display larger. This ensures a space that can be used by a user below the top plate. Therefore, a user can easily insert his / her hand into the gap between the top plate and the tray body from the first side to place an item such as a wire on the tray body. In addition, since at least a part of the first protrusion is located on the first side relative to the connector portion, the first protrusion can easily prevent the hand of a user who inserts his / her hand into the gap between the top plate and the tray body from the first side from touching the connector portion of the control device. In addition, the first protrusion can easily prevent the connector portion from being visible to a user who is working in the gap from the first side. As a result, even if at least a part of the control device is placed in a position where it is exposed to the gap, it is possible to prevent a user from accidentally touching the wiring connected to the connector portion and from accidentally pulling out the wiring. As described above, according to one aspect of the lift-top display fixture of the present invention, by exposing at least a part of the control device to the gap, a space that the user can use is secured below the top plate, while the first protrusion prevents the wiring connected to the control device from becoming disconnected.

[0010] (2) In the lift-top display fixture relating to the above aspect (1), the dimension in the first direction of at least a portion of the first protrusion located between the top and the tray main body may be configured to be greater than the distance between the first protrusion and the control device in a direction intersecting the vertical direction and perpendicular to the first direction. According to this aspect, the first protrusion and the control device can be arranged relatively close to each other in a direction intersecting the up-down direction and perpendicular to the first direction, while the dimension of the first protrusion in the first direction can be relatively large. This makes it easier for the connector portion to be covered by the first protrusion as seen by the user when the user works from the first side of the gap between the top plate and the tray main body, and more preferably prevents the user's hand from accidentally touching the connector portion and the user from accidentally pulling out the wiring. This more preferably prevents the wiring connected to the control device from coming loose.

[0011] (3) In the lift-top display fixture according to aspect (1) or (2) above, the upper end of the first protrusion may be configured to be located above the connector portion. According to this aspect, when a user works from the first side of the gap between the top plate and the tray main body, the connector portion is more likely to be covered by the first protrusion as seen by the user, which can more effectively prevent the user's hand from accidentally touching the connector portion and the user from accidentally pulling out the wiring.

[0012] (4) In the lifting table display fixture according to any one of the above aspects (1) to (3), the first side edge of the tray main body may be configured to have a raised portion that protrudes upward. According to this aspect, the rising portion can prevent items such as wiring placed on the tray main body from falling off the end of the first side of the tray main body. In addition, the rising portion can narrow the opening at the end of the first side of the gap between the top plate and the tray main body in the vertical direction. This makes it more difficult for the user to see the connector portion when the user works from the first side of the gap between the top plate and the tray main body. This can more effectively prevent the user's hand from accidentally touching the connector portion and the user from accidentally pulling out the wiring.

[0013] (5) In the lift-top type fixture according to the above aspect (4), the upper end of the first protrusion may be configured to be positioned higher than the upper end of the rising portion. According to this aspect, the first protrusion can be preferably enlarged in the vertical direction. This makes it easier for the connector to be covered by the first protrusion when viewed from the user while the user is working from the first side of the gap between the top plate and the tray body. This more preferably prevents the user's hand from accidentally touching the connector and prevents the user from accidentally pulling out the wires.

[0014] (6) In the lifting table display fixture relating to any one of the above aspects (1) to (5), the first protrusion may be provided in an intermediate portion of the tray main body portion that is away from both end portions in the first direction in the first direction. According to this aspect, the portion of the tray main body on the first side from the first protrusion can be easily used as a place for a user to place wiring of a device to be used on the top plate, etc. Also, when wiring connected to a control device is placed on the portion of the tray main body on the second side from the first protrusion, the user can easily recognize that the wiring on the second side from the first protrusion is the wiring connected to the control device, which can further prevent the user from accidentally pulling out the wiring.

[0015] (7) In a display unit with a liftable top panel relating to any one of the above aspects (1) to (6), the center of the first protrusion in the first direction may be configured to be located on the first side of the center of the tray main body in the first direction. According to this aspect, it is easy to arrange the control device on the second side of the first protrusion, which makes it easier for the connector to be covered by the first protrusion when the user performs work from the first side of the gap between the top plate and the tray body.

[0016] (8) In a display unit with a lifting top relating to any one of the above embodiments (1) to (7), the lifting device may have a pair of lifting legs spaced apart in a second direction that intersects the up-down direction and is perpendicular to the first direction, the item loading trays are arranged in a pair spaced apart in the second direction, and the position of the control device in the second direction may be midway between the pair of item loading trays in the second direction. According to this aspect, it is possible to prevent the control device from coming into contact with the article mounting tray, and it is possible to easily attach the control device and the article mounting tray to the top plate.

[0017] (9) In the liftable tabletop fixture according to the aspect (8) above, the first side of the control device may be provided with a holding portion capable of holding a power strip. According to this aspect, a user can connect the power cable of a device placed on the top plate to the power strip held in the holding section, and use the device. In addition, since the control device is disposed between the pair of item mounting trays in the second direction, the pair of item mounting trays are unlikely to get in the way when connecting the power cable to the power strip. In addition, by holding the power strip in the holding section provided on the first side of the control device, the power strip can easily cover the gap in the second direction between the control device and the first protrusion from the first side. This makes it more difficult for the user to see the connector section of the control device from the first side. This can further reduce the risk of the user accidentally pulling out the wiring.

[0018] (10) In the lifting tabletop display fixture relating to the above-mentioned (8) or (9), the connector portion may be provided on the side of the control device facing the second direction and exposed in the gap between the tabletop and the tray main body portion. According to this aspect, it is possible to easily arrange a part of the wiring connected to the connector in the gap between the top plate and the tray body, and to easily cover the connector with the first protrusion, which can more effectively prevent the user from accidentally touching the connector and from accidentally pulling out the wiring.

[0019] (11) In the lifting table display fixture relating to any one of the above aspects (8) to (10), the first protrusion may be provided on one of the edges of the tray main body in the second direction on the side where the control device is located. According to this aspect, the first protrusion can be disposed closer to the control device in the second direction. This makes it easier for the connector to be covered by the first protrusion when viewed from the user when the user works from the first side of the gap between the top plate and the tray body. This more effectively prevents the user's hand from accidentally touching the connector and prevents the user from accidentally pulling out the wires.

[0020] (12) In the lifting tabletop display fixture of the above aspect (11), the item loading tray may have a second protrusion protruding upward from the tray main body, the second protrusion being provided on an edge of the tray main body in the second direction opposite to the side on which the control device is located, and an upper end of the first protrusion and an upper end of the second protrusion may be attached to the tabletop. According to this aspect, the article placement tray can be stably attached to the top plate by the first protruding portion and the second protruding portion.

[0021] (13) In the lift-top display fixture according to any one of the above aspects (1) to (11), the upper end of the first protrusion may be attached to the top. According to this aspect, the first protrusion, which is an attachment portion for attaching the article loading tray to the top plate, can be used to prevent the wiring from coming loose. This makes it easier to simplify the structure of the article loading tray compared to a case where an attachment portion for attaching the article loading tray to the top plate is provided separately from the first protrusion. In addition, since the first protrusion can be provided over the entire gap between the top plate and the tray main body in the vertical direction, when a user works from the first side of the gap, the connector portion can be more easily and suitably covered by the first protrusion as viewed from the user. This can more suitably prevent the user's hand from accidentally touching the connector portion and the user from accidentally pulling out the wiring.

[0022] (14) The lifting tabletop display fixture relating to any one of the above aspects (1) to (13) may be configured to include a shielding member having a shielding wall portion that covers the gap between the tabletop and the tray main body portion from the second side in the first direction. According to this aspect, the shielding wall portion can prevent the gap between the top plate and the tray main body portion from being seen from the second side. This can improve the appearance of the top plate lifting type fixture when viewed from the second side. In addition, the shielding wall portion can prevent items such as wiring placed on the tray main body portion from falling off the end of the tray main body portion on the second side.

[0023] (15) In the lifting tabletop fixture of the aspect (14) above, the lifting device may have a lifting section located on the second side of the shielding wall section, the shielding wall section may have a through hole penetrating the shielding wall section in the first direction, the wiring connected to the control device may include wiring that passes through the through hole and connects the control device and the lifting section, and the shielding member may have a wiring support section capable of supporting the wiring connected to the control device. According to this aspect, the control device can be disposed in a position where at least a portion of the control device is exposed in the gap between the top plate and the tray main body, and the control device and the lifting section can be suitably connected via wiring. Effect of the Invention

[0024] According to one aspect of the present invention, in a lift-top type fixture, it is possible to prevent wiring connected to a control device from becoming disconnected while ensuring space below the top that can be used by users. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a perspective view showing a liftable tabletop fixture in a first embodiment. [Diagram 2] FIG. 2 is a view of the liftable tabletop fixture in the first embodiment from the right side. [Diagram 3] FIG. 2 is a rear view of the liftable tabletop fixture in the first embodiment. [Figure 4] FIG. 2 is a top view of a portion of the liftable tabletop fixture in the first embodiment. [Diagram 5] FIG. 2 is a perspective view showing a portion of the liftable tabletop fixture in the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing a part of the liftable tabletop fixture in the first embodiment, taken along the line VI-VI in FIG. [Figure 7] FIG. 2 is a perspective view showing another part of the liftable tabletop fixture in the first embodiment. [Figure 8] FIG. 2 is a perspective view showing an article placement tray in the first embodiment. [Figure 9] 4 is a cross-sectional view showing a connection portion between a top plate and an article mounting tray in the first embodiment. FIG. [Figure 10] 5A to 5C are cross-sectional views showing a part of a procedure for attaching the article mounting tray to a top plate in the first embodiment. [Figure 11] FIG. 2 is a rear view of a portion of the lift-top type furniture in the first embodiment. [Figure 12] A cross-sectional view showing a part of a lift-top type furniture in a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the scope of the present invention is not limited to the following embodiment, and can be changed as desired within the scope of the technical concept of the present invention. In addition, in the drawings, the scale and number of each structure may be different from the scale and number of the actual structure in order to make each configuration easier to understand.

[0027] The drawings also show a Z-axis indicating the up-down direction. The side where the arrow of the Z-axis points (+Z side) is the up-down direction, and the opposite side where the arrow of the Z-axis points (-Z side) is the down-down direction. The drawings also show an X-axis indicating the front-rear direction of the tabletop lifting fixture in the following embodiment. In the following description, the side where the arrow of the X-axis points (+X side) is the rear side, and the opposite side where the arrow of the X-axis points (-X side) is the front side. The drawings also show a Y-axis indicating the left-right direction of the tabletop lifting fixture in the following embodiment. In the following description, the side where the arrow of the Y-axis points (+Y side) is the right side, and the opposite side where the arrow of the Y-axis points (-Y side) is the left side. In the following description, the front-rear direction along the X-axis is called the "front-rear direction X", the left-right direction along the Y-axis is called the "left-right direction Y", and the up-down direction along the Z-axis is called the "up-down direction Z". The front-to-back direction X, the left-to-right direction Y, and the up-to-down direction Z are perpendicular to each other. In addition, with respect to a certain object, the side closer to the center of the lift-top fixture in the left-to-right direction Y is called the "inner left-to-right direction," and the side farther from the center of the lift-top fixture in the left-to-right direction Y is called the "outer left-to-right direction."

[0028] In the following embodiments, the front-rear direction X corresponds to a "first direction" that intersects with the up-down direction Z. The left-right direction Y corresponds to a "second direction" that intersects with the up-down direction Z and is perpendicular to the first direction. The rear side (+X side) corresponds to the "first side" of the first direction. The front side (-X side) corresponds to the "second side" of the first direction.

[0029] First Embodiment The lifting top fixture 100 of this embodiment shown in Figures 1 to 3 is a lifting top desk with a lifting top 10 that can be raised and lowered. In this embodiment, the lifting top fixture 100 is an electrically-operated lifting top fixture. As shown in Figures 1 to 3, the lifting top fixture 100 includes a top 10 and a support 20 that supports the top 10 so that it can be raised and lowered. The top 10 is a plate-like member whose plate surface faces in the up-down direction Z. In this embodiment, the top 10 is a substantially rectangular plate that is long in the left-right direction Y. The top 10 is supported from below by the support 20.

[0030] The support 20 is placed on the floor surface at the location where the lifting tabletop furniture 100 is to be installed. The support 20 has a lifting device 20a that lifts and lowers the tabletop 10. As shown in FIG. 1 and FIG. 3, in this embodiment, the lifting device 20a has a pair of lifting legs 21, 22 that are spaced apart in the left-right direction Y. The lifting leg 21 supports the center of the tabletop 10 in the front-rear direction X at the right end (+Y side) from below. The lifting leg 22 supports the center of the tabletop 10 in the front-rear direction X at the left end (-Y side) from below. The lifting legs 21 and 22 are symmetrically arranged in the left-right direction Y across the center of the tabletop lifting tabletop furniture 100 in the left-right direction Y. The lifting legs 21 and 22 are similar except that they are symmetrically arranged in the left-right direction Y. In the following description, the lifting leg 21 will be described as a representative of the lifting leg 21 and the lifting leg 22, and a description of the lifting leg 22 may be omitted.

[0031] 2, the lifting leg 21 has a lifting part 23 extending in the up-down direction Z, and a lower arm 24 connected to the lower end of the lifting part 23. The lower arm 24 extends in the front-rear direction X. The lower arm 24 protrudes on both sides in the front-rear direction X beyond the lifting part 23. The lower arm 24 is placed on the floor surface.

[0032] The lifting section 23 has a leg body 23d and a power section 25. The leg body 23d can be extended and retracted in the vertical direction Z. In each drawing, the leg body 23d is shown to be at its shortest in the vertical direction Z. The leg body 23d has a plurality of tubular sections 23a, 23b, and 23c. In this embodiment, the plurality of tubular sections 23a, 23b, and 23c are rectangular tubular. The lower end of the tubular section 23a is fixed to the lower arm 24. The tubular section 23b is inserted into the tubular section 23a. The tubular section 23b is movable relative to the tubular section 23a in the vertical direction Z. The tubular section 23c is inserted into the tubular section 23b. The tubular section 23c is movable relative to the tubular section 23b in the vertical direction Z. The upper end of the tubular section 23c is connected to the power section 25. The number of tubular sections constituting the leg body 23d is not particularly limited as long as it is two or more.

[0033] The power unit 25 is located above the leg body 23d of the lifting leg 21. The power unit 25 moves the multiple tube parts 23a, 23b, and 23c of the lifting leg 21 relatively in the vertical direction Z. This causes the lifting leg 21 to expand and contract in the vertical direction Z. As shown in FIG. 4, the lifting part 23 of the lifting leg 22 has a power unit 26. The power unit 26 is located above the leg body 23d of the lifting leg 22. The power unit 26 moves the multiple tube parts 23a, 23b, and 23c of the lifting leg 22 relatively in the vertical direction Z. This causes the lifting leg 22 to expand and contract in the vertical direction Z. In this embodiment, the power units 25 and 26 are substantially rectangular parallelepipeds that are long in the left-right direction Y. The power units 25 and 26 protrude inward in the left-right direction from the leg body parts 23d of the lifting parts 23 of the lifting legs 21 and 22. Although not shown, each of the power units 25 and 26 has a motor.

[0034] The support 20 has upper arms 29a and 29b. The upper arm 29a is attached to the upper end of the lifting leg 21. The upper arm 29b is attached to the upper end of the lifting leg 22. The upper arms 29a and 29b extend in the front-rear direction X. The upper arms 29a and 29b protrude further on both sides in the front-rear direction X than the power units 25 and 26. The upper arms 29a and 29b have a portion that covers the outer ends of the power units 25 and 26 in the left-right direction from above, and a portion that covers the power units 25 and 26 from the outside in the left-right direction. The upper arms 29a and 29b are fixed to the outer edges of the lower surface of the top board 10 in the left-right direction.

[0035] The lifting tabletop fixture 100 includes a shielding member 50. In this embodiment, the shielding member 50 is a connecting member that extends in the left-right direction Y and connects the pair of lifting legs 21, 22 to each other. The shielding member 50 connects the lifting sections 23 of the pair of lifting legs 21, 22 to each other. More specifically, the shielding member 50 connects the power section 25 to the power section 26. The shielding member 50 is fixed to the underside of the tabletop 10. In this embodiment, the shielding member 50 is a sheet metal member. As shown in FIG. 5, the shielding member 50 has a shielding wall section 51, a wiring support section 52, and a fixed section 53.

[0036] The shielding wall 51 is a plate whose surface faces the front-rear direction X. The shielding wall 51 is a substantially rectangular plate whose length is long in the left-right direction Y. The shielding wall 51 is located rearward (+X side) of the lifting unit 23. In other words, the lifting unit 23 is located forward (-X side) of the shielding wall 51. More specifically, the shielding wall 51 is located rearward (+X side) of the power units 25 and 26. In other words, the power units 25 and 26 are located forward (-X side) of the shielding wall 51. As shown in FIG. 3, the shielding wall 51 has a plurality of through holes 51a, 51b, 51c, and 51d formed therein, which penetrate the shielding wall 51 in the front-rear direction X. In this embodiment, the through holes 51a, 51b, 51c, and 51d are substantially rectangular holes whose length is long in the left-right direction Y. Through holes 51a and 51b are formed in a right side (+Y side) portion of shielding wall portion 51. Through hole 51b is located more outward in the left-right direction (+Y side) than through hole 51a. Through holes 51c and 51d are formed in a left side (-Y side) portion of shielding wall portion 51. Through hole 51d is located more outward in the left-right direction (-Y side) than through hole 51c.

[0037] The wiring support portion 52 can support the wiring 80 connected to the connector portion 30a described later. As shown in FIG. 6, the wiring support portion 52 is connected to the lower end of the shielding wall portion 51. The wiring support portion 52 extends in the left-right direction Y. The wiring support portion 52 has an inclined wall portion 52a, a bottom wall portion 52b, and a side wall portion 52c. The inclined wall portion 52a obliquely protrudes from the lower end of the shielding wall portion 51 obliquely to the front side (-X side) and downward. The inclined wall portion 52a has a substantially rectangular plate shape with an upper surface facing obliquely to the front side. The bottom wall portion 52b protrudes from the front and lower end of the inclined wall portion 52a to the front side. The bottom wall portion 52b has a substantially rectangular plate shape with a plate surface perpendicular to the up-down direction Z. The side wall portion 52c protrudes upward from the front end of the bottom wall portion 52b. The side wall portion 52c has a generally rectangular plate shape whose plate surface is perpendicular to the front-rear direction X. The upper end of the side wall portion 52c is located lower than the upper end of the shielding wall portion 51. The side wall portion 52c faces a lower portion of the shielding wall portion 51 with a gap in the front-rear direction X. A groove 54 that opens upward and extends in the left-right direction Y is formed by the lower portion of the shielding wall portion 51, the inclined wall portion 52a, the bottom wall portion 52b, and the side wall portion 52c. A part of the wiring 80 that is connected to the connector portion 30a described later is arranged in the groove 54.

[0038] The fixed portion 53 protrudes rearward (+X side) from the upper end of the shielding wall portion 51. The fixed portion 53 is fixed to the underside of the tabletop 10. This fixes the shielding member 50 to the tabletop 10. As shown in Fig. 4, the fixed portion 53 extends in the left-right direction Y. The fixed portion 53 has a generally rectangular plate shape with a plate surface facing in the up-down direction Z.

[0039] The lifting tabletop fixture 100 is equipped with cover members 28a and 28b. Cover member 28a is a cover that covers the power unit 25. Cover member 28a has a portion that covers the power unit 25 from the front side (-X side) and a portion that covers the power unit 25 from the inside in the left-right direction (-Y side). Cover member 28b is a cover that covers the power unit 26. Cover member 28b has a portion that covers the power unit 26 from the front side and a portion that covers the power unit 26 from the inside in the left-right direction (+Y side). Cover members 28a and 28b are fixed to the underside of the tabletop 10.

[0040] The lifting tabletop furniture 100 comprises a control device 30 that controls the lifting device 20a, and an operation unit 27 that can input signals to the control device 30. In this embodiment, the control device 30 is a generally rectangular parallelepiped that is long in the left-right direction Y. The control device 30 is provided in the center of the lifting tabletop furniture 100 in the left-right direction Y. The control device 30 is located on the rear side (+X side) of the shielding member 50. In this embodiment, the control device 30 is located behind the center of the shielding wall portion 51 in the left-right direction Y, and is arranged opposite the shielding wall portion 51 in the front-rear direction X. In this embodiment, the control device 30 is fixed to the underside of the tabletop 10.

[0041] The control device 30 has a connector section 30a to which the wiring 80 is connected. In this embodiment, the connector section 30a is provided with four parts, namely, a connector section 31, a connector section 32, a connector section 33, and a connector section 34. The wiring 80 is provided with four parts, namely, a wiring 81, a wiring 82, a wiring 83, and a wiring 84. In this embodiment, each connector section 30a is provided on a side surface in the left-right direction Y of the control device 30. The connector section 31 and the connector section 32 are provided on a side surface on the right side (+Y side) of the control device 30. The connector section 31 is located rearward (+X side) from the connector section 32. The wiring 81, which is a power cable, is connected to the connector section 31. The connector section 31 protrudes slightly outward in the left-right direction. The wiring 82, which connects the control device 30 and the lifting section 23 of the lifting leg 21, is connected to the connector section 32. In this embodiment, the wiring 82 connects the control device 30 and the power section 25. The connector portion 33 and the connector portion 34 are provided on the left side (-Y side) of the control device 30. The connector portion 33 is located rearward of the connector portion 34. A wiring 83 that connects the control device 30 and the lifting portion 23 of the lifting leg 22 is connected to the connector portion 33. In this embodiment, the wiring 83 connects the control device 30 and the power portion 26. A wiring 84 that connects the control device 30 and the operation portion 27 is connected to the connector portion 34.

[0042] The wiring 81, 82 is drawn from each of the connector parts 31, 32 through the through hole 51a onto the wiring support part 52. The wiring 81 drawn onto the wiring support part 52 is drawn through the groove 54 to the outside in the left-right direction (right side, +Y side), and through the through hole 51b to the tray body part 41 of the article placement tray 40 arranged on the right side (+Y side) described later. The wiring 81 drawn onto the tray body part 41 is drawn downward along the lifting leg 21 and connected to a power source (not shown). Note that the wiring 81 may extend to the lifting leg 21 through the tray body part 41 without passing through the through holes 51a, 51b, as shown by the two-dot chain line in FIG. 4. The wiring 82 drawn onto the wiring support part 52 through the through hole 51a is drawn through the groove 54 to the outside in the left-right direction (right side, +Y side), and is connected to the power part 25 through the gap between the cover member 28a and the wiring support part 52 in the vertical direction Z. That is, the wiring 82 is a wiring that connects the control device 30 and the power unit 25 through the through hole 51a.

[0043] The wiring 83, 84 is pulled out from each of the connector parts 33, 34 through the through hole 51c onto the wiring support part 52. The wiring 83 pulled out onto the wiring support part 52 is routed through the groove 54 to the outside in the left-right direction (left side, -Y side) and connected to the power part 26 through a gap in the up-down direction Z between the cover member 28b and the wiring support part 52. In other words, the wiring 83 is a wiring that connects the control device 30 and the power part 26 through the through hole 51c. The wiring 83 pulled out onto the wiring support part 52 is routed through the groove 54 to the outside in the left-right direction (left side, -Y side) and connected to the connection cable of the operation part 27.

[0044] The operation unit 27 is fixed to the underside of the tabletop 10. In this embodiment, the operation unit 27 is fixed to a corner on the left side (-Y side) and front side (-X side) of the underside of the tabletop 10. The operation unit 27 is operated by a user. The user can input a signal to the control device 30 by operating the operation unit 27. The control device 30 drives the power units 25, 26 based on the signal input from the operation unit 27, and raises and lowers the pair of lifting legs 21, 22. This allows the user to raise and lower the tabletop 10.

[0045] The tabletop lifting type furniture 100 includes a fixing member 60 that fixes the control device 30 to the underside of the tabletop 10. In this embodiment, the fixing member 60 is formed of two sheet metal members. As shown in FIG. 7, the fixing member 60 has a lower plate portion 61 that supports the control device 30 from below. The lower plate portion 61 is a plate-like plate with a plate surface facing the vertical direction Z. As shown in FIG. 4, the fixing member 60 has an upper plate portion 63 located above the control device 30. The upper plate portion 63 is a plate-like plate with a plate surface facing the vertical direction Z. The control device 30 is sandwiched between the lower plate portion 61 and the upper plate portion 63 in the vertical direction Z. The fixing member 60 has an engagement wall portion 64 that engages with the shielding member 50. The engagement wall portion 64 is located on the front side (-X side) of the control device 30. The engagement wall portion 64 protrudes upward from the front end portion of the lower plate portion 61. The engaging wall portion 64 engages with the edge of a hole (not shown) formed in the shielding wall portion 51 from above.

[0046] As shown in FIG. 7, the fixing member 60 has a holding portion 62 capable of holding the power tap 70. The holding portion 62 extends in the left-right direction Y. The holding portion 62 is provided on the rear side (+X side) of the control device 30. The control device 30 is sandwiched in the front-rear direction X by the holding portion 62 and the engagement wall portion 64. The holding portion 62 has a side wall portion 62a, a lower wall portion 62b, and an upper wall portion 62c. The side wall portion 62a is a substantially rectangular plate whose plate surface faces the front-rear direction X and extends in the left-right direction Y. The lower wall portion 62b protrudes rearward from a lower end portion of the side wall portion 62a. The lower wall portion 62b is a substantially rectangular plate whose plate surface faces the up-down direction Z and extends in the left-right direction Y. The upper wall portion 62c protrudes rearward from an upper end portion of the side wall portion 62a. The upper wall portion 62c has a generally rectangular plate shape with a plate surface facing the up-down direction Z and extending in the left-right direction Y. The upper wall portion 62c faces the lower wall portion 62b above with a gap therebetween. A pair of upper wall portions 62c are provided with a gap therebetween in the left-right direction Y. Each of the pair of upper wall portions 62c is fixed to the lower surface of the top board 10.

[0047] The power tap 70 held by the holding portion 62 has a power tap main body 71 extending in the left-right direction Y, and a cable 72 extending from an end of the power tap main body 71 on the right side (+Y side). The power tap main body 71 is held by the holding portion 62. The power tap main body 71 is sandwiched in the up-down direction Z between the lower wall portion 62b and the upper wall portion 62c. The power tap main body 71 can be fixed to the lower wall portion 62b by, for example, a bolt. The power tap main body 71 may be fixed to the holding portion 62 by utilizing the magnetic force of a magnet.

[0048] As shown in FIG. 3, the lift-top display unit 100 includes an article placement tray 40 located below the top 10. In this embodiment, the article placement tray 40 is a wiring tray on which a user can place wiring for devices that he or she will use by placing them on the top 10. In this embodiment, the article placement tray 40 is made of resin. Note that the material from which the article placement tray 40 is made is not particularly limited. The article placement tray 40 may be made of metal.

[0049] In this embodiment, the article placement trays 40 are arranged in a pair with an interval in the left-right direction Y. The pair of article placement trays 40 are arranged to sandwich the control device 30 in the left-right direction Y when viewed in the front-rear direction X. In other words, the position of the control device 30 in the left-right direction Y is a position between the pair of article placement trays 40 in the left-right direction Y. The pair of article placement trays 40 have the same shape as each other. Therefore, in the following description, the article placement tray 40 located to the right (+Y side) of the control device 30 among the pair of article placement trays 40 will be representatively described, and the description of the article placement tray 40 located to the left (-Y side) of the control device 30 may be omitted. Note that, for the article placement tray 40 located to the right of the control device 30, the outside in the left-right direction is the right side, and the inside in the left-right direction is the left side. For the article placement tray 40 located to the left of the control device 30, the outside in the left-right direction is the left side, and the inside in the left-right direction is the right side.

[0050] 8, the article placement tray 40 has a tray main body 41 and a protrusion 42. The tray main body 41 extends along a plane perpendicular to the up-down direction Z. In this embodiment, the tray main body 41 is a substantially rectangular plate whose plate surface faces the up-down direction Z and extends in the left-right direction Y. On the upper surface of the tray main body 41, articles such as wiring for a device that a user places on the top board 10 and uses are placed.

[0051] As shown in FIG. 6, the tray main body 41 faces the bottom of the top plate 10 with a gap G therebetween. The entire tray main body 41 is disposed below and away from the top plate 10. The distance in the up-down direction Z between the tray main body 41 and the top plate 10, i.e., the dimension in the up-down direction Z of the gap G between the top plate 10 and the tray main body 41, is smaller than the dimension in the front-rear direction X of the tray main body 41. The gap G between the top plate 10 and the tray main body 41 is open on the rear side (+X side) and both sides in the left-right direction Y. The gap G between the top plate 10 and the tray main body 41 is covered from the front side (-X side) by the shielding wall 51. As a result, the front side of the gap G between the top plate 10 and the tray main body 41 is closed. The front end of the tray main body 41 and the lower end of the shielding wall 51 face each other in the front-rear direction X with a gap therebetween. The distance in the front-rear direction X between the front end of the tray main body 41 and the lower end of the shielding wall 51 is smaller than the outer diameter of the wiring 80, for example.

[0052] In this embodiment, at least a part of the control device 30 is exposed and disposed in the gap G between the top plate 10 and the tray main body 41. "At least a part of the control device 30 is exposed and disposed in the gap G between the top plate 10 and the tray main body 41" includes at least a part of the control device 30 being located in the gap G and at least a part of the control device 30 facing the gap G without any other member therebetween. As shown in FIG. 4, in this embodiment, at least a part of the control device 30 is exposed and disposed in the left-right direction Y with respect to the gap G between the top plate 10 and the tray main body 41. "At least a part of the control device 30 is exposed in a certain direction with respect to the gap G between the top plate 10 and the tray main body 41" means that the control device 30 has a part disposed opposite the gap G in the certain direction. That is, in this embodiment, the control device 30 has a part disposed opposite the gap G in the left-right direction Y. In addition, at least a part of the control device 30 may be arranged so as to be exposed in a direction other than the left-right direction Y, such as the front-back direction X, from the gap G between the top plate 10 and the tray main body portion 41, or may be arranged so as to be exposed in multiple directions from the gap G.

[0053] In this embodiment, the control device 30 is disposed outside the gap G between the top plate 10 and the tray main body 41. More specifically, the control device 30 is located inside the gap G between the top plate 10 and the tray main body 41 in the left-right direction. In other words, the control device 30 is located to the side (left-right direction Y) of the article placement tray 40. The entire control device 30 is located forward (-X side) of the rear edge (+X side) of the tray main body 41.

[0054] The control device 30 is located between a pair of gaps G in the left-right direction Y provided between a pair of article placement trays 40 and the top plate 10. The control device 30 faces the front (-X side) part of the gap G in the left-right direction Y. In this embodiment, the side surface of the control device 30 in the left-right direction Y is disposed facing the gap G in the left-right direction Y without any other member therebetween. The right side surface (+Y side) of the control device 30 and the connector parts 31 and 32 are exposed in the gap G between the tray main body part 41 of the article placement tray 40 located on the right side and the top plate 10. The left side surface (-Y side) of the control device 30 and the connector parts 33 and 34 are exposed in the gap G between the tray main body part 41 of the article placement tray 40 located on the left side and the top plate 10.

[0055] As shown in FIG. 8, in this embodiment, the tray main body 41 is formed by a main body member 41a and a pair of edge members 41b, 41c. The main body member 41a is a substantially rectangular plate extending in the left-right direction Y. The main body member 41a has a substantially rectangular plate-shaped plate portion 41d extending in the left-right direction Y, a front edge portion 41e protruding upward from the edge portion of the front side (-X side) of the plate portion 41d, and a rib portion 41f protruding upward from the upper surface of the plate portion 41d. The front edge portion 41e extends in the left-right direction Y. Both ends of the front edge portion 41e in the left-right direction Y are connected to the pair of edge members 41b, 41c, respectively. The rib portion 41f extends in the left-right direction Y. Both ends of the rib portion 41f in the left-right direction Y are connected to the pair of edge members 41b, 41c, respectively. In this embodiment, two rib portions 41f are provided at an interval in the front-rear direction X.

[0056] The pair of edge members 41b, 41c extend in the front-rear direction X. The edge member 41b is attached to an edge portion on the inner side in the left-right direction (-Y side) of the main body member 41a. The edge member 41c is attached to an edge portion on the outer side in the left-right direction (+Y side) of the main body member 41a. The upper surfaces of the pair of edge members 41b, 41c are located higher than the upper surface of the plate-shaped portion 41d.

[0057] A rising portion 44 protruding upward is provided on the rear edge (+X side) of the tray main body 41. The rising portion 44 extends in the left-right direction Y and is provided on the entire rear edge of the tray main body 41 in the left-right direction Y. In this embodiment, the rising portion 44 protrudes in a direction inclined obliquely in the front-rear direction X with respect to the up-down direction Z. The rising portion 44 is located rearward as it moves upward. In this embodiment, the rising portion 44 is formed by the rear edge of the main body member 41a and the rear ends of the pair of edge members 41b, 41c. The upper end of the rising portion 44 is located above the upper end of the front edge portion 41e and the upper end of the rib portion 41f.

[0058] As shown in FIG. 6, the lower surface of the tray main body 41 is located above the lower surface of the bottom wall 52b of the shielding member 50 and the lower surface of the lower wall 62b of the fixed member 60. The lower surface of the tray main body 41 is the lower end of the article placement tray 40. The lower surface of the bottom wall 52b is the lower end of the shielding member 50. The lower surface of the lower wall 62b is the lower end of the fixed member 60. That is, in this embodiment, the lower end of the shielding member 50 and the lower end of the fixed member 60 are located below the lower end of the article placement tray 40. The lower surface of the bottom wall 52b of the shielding member 50 and the lower surface of the lower wall 62b of the fixed member 60 are located at the same position in the vertical direction Z, for example. Note that the lower surface of the bottom wall 52b of the shielding member 50 and the lower surface of the lower wall 62b of the fixed member 60 may be located at different positions from each other in the vertical direction Z. The front edge (-X side) of the tray main body 41 is located below the fixed portion 53 of the shielding member 50. The front edge of the tray main body 41 overlaps with the fixed portion 53 when viewed in the up-down direction Z.

[0059] The protrusion 42 protrudes upward from the tray main body 41. As shown in FIG. 8, the protrusion 42 includes a first protrusion 42a and a second protrusion 42b. In this embodiment, each article placement tray 40 is provided with two protrusions 42, the first protrusion 42a and the second protrusion 42b. In this embodiment, the protrusion 42 corresponds to an attachment portion attached to the top plate 10. In this embodiment, the upper end of the first protrusion 42a and the upper end of the second protrusion 42b are attached to the top plate 10, thereby attaching the article placement tray 40 to the top plate 10. In this embodiment, the article placement tray 40 is detachably attached to the top plate 10.

[0060] The first protrusion 42a and the second protrusion 42b are disposed at an interval from each other in the left-right direction Y. The first protrusion 42a and the second protrusion 42b are a pair of protrusions 42 provided at an interval in the left-right direction Y. The first protrusion 42a is provided on the edge of the tray main body 41 in the left-right direction Y on the side where the control device 30 is located, that is, on the edge on the inner side in the left-right direction (-Y side). The first protrusion 42a protrudes upward from the upper surface of the edge member 41b. In this embodiment, the first protrusion 42a is integrally molded with the edge member 41b. The second protrusion 42b is provided on the edge of the tray main body 41 in the left-right direction Y on the opposite side to the side where the control device 30 is located, that is, on the edge on the outer side in the left-right direction (+Y side). The second protrusion 42b protrudes upward from the upper surface of the edge member 41c. In this embodiment, the second protrusion 42b is integrally molded with the edge member 41c.

[0061] The first protrusion 42a and the second protrusion 42b are provided in an intermediate portion of the tray main body 41 that is separated in the front-rear direction X from both ends in the front-rear direction X. In this embodiment, the first protrusion 42a and the second protrusion 42b are provided in a rear (+X side) portion of the tray main body 41. The center in the front-rear direction X of the first protrusion 42a and the center in the front-rear direction X of the second protrusion 42b are located rearward of the center in the front-rear direction X of the tray main body 41.

[0062] As shown in FIG. 5, the first protrusion 42a and the second protrusion 42b are disposed at a position different from the control device 30 in the left-right direction Y. In this embodiment, the first protrusion 42a and the second protrusion 42b are positioned outside the control device 30 in the left-right direction (+Y side). At least a part of the first protrusion 42a and at least a part of the second protrusion 42b are positioned rearward (+X side) from the connector parts 31, 32. In this embodiment, the entire first protrusion 42a and the entire second protrusion 42b are positioned rearward from the connector parts 31, 32. The entire first protrusion 42a and the entire second protrusion 42b are positioned rearward from the entire control device 30. The upper end of the first protrusion 42a and the upper end of the second protrusion 42b are positioned above the connector parts 31, 32. The upper end of the first protrusion 42a and the upper end of the second protrusion 42b are positioned above the upper end of the rising part 44.

[0063] The first protruding portion 42a and the second protruding portion 42b are disposed symmetrically in the left-right direction Y with respect to the center of the tray main body 41 in the left-right direction Y. The first protruding portion 42a and the second protruding portion 42b have the same shape except for being symmetrical in the left-right direction Y. Therefore, in the following description, the first protruding portion 42a will be described as a representative of the pair of protruding portions 42, and a description of the second protruding portion 42b may be omitted.

[0064] As shown in FIG. 9, the first protruding portion 42a has a base portion 45, a pair of elastic claw portions 46, 47, and a pair of protruding wall portions 48, 49. The base portion 45 is a portion that protrudes upward from the tray main body portion 41. The base portion 45 has a wide portion 45a that is connected to the tray main body portion 41, and a narrow portion 45b that is connected to the upper side of the wide portion 45a. In this embodiment, the wide portion 45a and the narrow portion 45b are rectangular parallelepipeds that are long in the front-rear direction X. The dimension of the narrow portion 45b in the front-rear direction X is smaller than the dimension of the wide portion 45a in the front-rear direction X. The wide portion 45a protrudes on both sides in the front-rear direction X beyond the narrow portion 45b.

[0065] The pair of elastic claws 46, 47 extend upward from the base 45. More specifically, the elastic claw 46 extends upward from the edge of the rear side (+X side) of the wide portion 45a. The elastic claw 47 extends upward from the edge of the front side (-X side) of the wide portion 45a. The pair of elastic claws 46, 47 are provided at an interval in the front-rear direction X. The pair of elastic claws 46, 47 are respectively passed through a pair of holes 11a, 11b formed in the lower surface of the top plate 10. The pair of holes 11a, 11b are holes that connect to the inside of a hollow portion 13 provided in the top plate 10. In this embodiment, the hollow portion 13 is formed between the lower plate portion 11 and the upper plate portion 12 in the vertical direction Z by arranging the lower plate portion 11 and the upper plate portion 12 at an interval in the vertical direction Z. The lower surface of the lower plate portion 11 is the lower surface of the top plate 10. The upper surface of the upper plate portion 12 is the upper surface of the tabletop 10. Although not shown in the drawings, a plurality of beam members extending in the left-right direction Y, for example, are provided between the lower plate portion 11 and the upper plate portion 12 in the up-down direction Z. The pair of holes 11a, 11b are through holes that penetrate the lower plate portion 11 in the up-down direction Z. The pair of holes 11a, 11b are rectangular when viewed in the up-down direction Z. The pair of holes 11a, 11b are provided with an interval in the front-rear direction X.

[0066] The elastic claw portion 46 has an extension portion 46a extending in the up-down direction Z and a claw body portion 46b protruding from the extension portion 46a in the front-rear direction X. The extension portion 46a extends upward from the rear (+X side) edge of the wide portion 45a. The extension portion 46a has a substantially rectangular plate shape with a plate surface facing the front-rear direction X and elongated in the up-down direction Z. The extension portion 46a is elastically deformable in the front-rear direction X. The extension portion 46a is disposed at a distance from the narrow portion 45b in the front-rear direction X. The upper end portion of the extension portion 46a is located inside the hollow portion 13 through the hole portion 11a. The extension portion 46a has a finger hook portion 46f located below the hole portion 11a. In this embodiment, the finger hook portion 46f is a portion of the extension portion 46a excluding the portion inserted into the hole portion 11a and the lower end portion. A protrusion 46e is formed on the rear surface of the finger hook 46f. The protrusion 46e extends in the left-right direction Y. A plurality of the protrusions 46e are formed in the up-down direction Z at intervals.

[0067] The claw main body 46b protrudes rearward (+X side) from the upper end of the extension 46a. The claw main body 46b is located inside the hollow portion 13. The claw main body (engagement portion) 46b is an engagement portion that engages from above with an engaged portion 11c provided on the top plate 10. The engaged portion 11c is provided on the periphery of the hole 11a. More specifically, the engaged portion 11c is a portion located on the rear side of the periphery of the hole 11a on the upper surface of the lower plate 11. The upper surface of the lower plate 11 forms a surface located on the lower side of the inner surface of the hollow portion 13.

[0068] The claw body 46b has an engagement wall 46c protruding rearward (+X side) from the upper end of the extension 46a, and an inclined wall 46d extending obliquely upward and frontward (-X side) from the rear end of the engagement wall 46c. The engagement wall 46c is engaged with the engaged portion 11c from above. As a result, the claw body 46b is engaged with the engaged portion 11c provided on the periphery of the hole 11a from above inside the hollow portion 13. In this embodiment, the rear portion of the engagement wall 46c is in contact with the engaged portion 11c from above. The rear portion of the engagement wall 46c protrudes downward further than the front portion of the engagement wall 46c. The upper end of the inclined wall 46d is located forward of the extension 46a.

[0069] The elastic claw portion 47 is disposed symmetrically with the elastic claw portion 46 in the front-rear direction X with the center of the first protruding portion 42a in the front-rear direction X therebetween. The elastic claw portion 47 has an extension portion 47a and a claw main body portion (engagement portion) 47b. The extension portion 47a has a finger hook portion 47f. Each portion of the elastic claw portion 47 is similar to each portion of the elastic claw portion 46, except that they are symmetrical in the front-rear direction X. The claw main body portion 47b is an engagement portion that engages with an engaged portion 11d provided in the top plate 10 from above. The engaged portion 11d is provided on the periphery of the hole portion 11b. More specifically, the engaged portion 11d is a portion located on the front side (-X side) of the periphery of the hole portion 11b on the upper surface of the lower plate portion 11.

[0070] The claw main bodies 46b, 47b of the pair of elastic claws 46, 47 are engaged from above with a pair of engaged portions 11c, 11d provided on the periphery of the pair of holes 11a, 11b, respectively, thereby preventing the pair of elastic claws 46, 47 from slipping out downward from the pair of holes 11a, 11b. As a result, the first protrusion 42a is attached to the top plate 10 via the pair of elastic claws 46, 47. The second protrusion 42b is also attached to the top plate 10 in the same manner as the first protrusion 42a. The first protrusion 42a and the second protrusion 42b are attached to the top plate 10 as described above, whereby the article placement tray 40 is attached to the top plate 10.

[0071] The pair of protruding wall portions 48, 49 protrude upward from the base portion 45. The protruding wall portion 48 protrudes upward from a rear (+X side) edge of the upper end portion of the narrow width portion 45b. The protruding wall portion 49 protrudes upward from a front (-X side) edge of the upper end portion of the narrow width portion 45b. The pair of protruding wall portions 48, 49 are located between the pair of elastic claw portions 46, 47 in the front-rear direction X. The pair of protruding wall portions 48, 49 are respectively passed through the pair of holes 11a, 11b.

[0072] The protruding wall portion 48 has a main body wall portion 48a protruding upward from the narrow width portion 45b of the base portion 45, and a guide wall portion 48b extending upward from the main body wall portion 48a. The main body wall portion 48a is passed through the hole portion 11a. The dimension in the front-rear direction X between the front side (-X side) surface of the main body wall portion 48a and the rear side (+X side) surface of the extension portion 46a is approximately the same as the dimension in the front-rear direction X of the hole portion 11a. The front side surface of the main body wall portion 48a and the rear side surface of the extension portion 46a may both be in contact with the inner edge of the hole portion 11a, or only one of them may be in contact with the inner edge of the hole portion 11a, or both may face the inner edge of the hole portion 11a with a gap therebetween. The guide wall portion 48b extends upward from the edge of the front side (-X side) of the main body wall portion 48a. The dimension of the guide wall portion 48b in the front-rear direction X is smaller than the dimension of the main body wall portion 48a in the front-rear direction X. The upper portion of the guide wall portion 48b is positioned toward the rear side (+X side) as it goes upward.

[0073] The convex wall portion 49 is disposed symmetrically in the front-rear direction X with respect to the convex wall portion 48 with respect to the center of the first protrusion 42a in the front-rear direction X. The convex wall portion 49 has a main body wall portion 49a and a guide wall portion 49b. Each portion of the convex wall portion 49 is similar to each portion of the convex wall portion 48 except that it is symmetrical in the front-rear direction X.

[0074] As shown in FIG. 10, an operator attaching the article placement tray 40 to the top plate 10 moves the first protruding portion 42a from below toward the top plate 10 while elastically deforming the extensions 46a, 47a of the pair of elastic claws 46, 47 in the front-rear direction X in a direction in which the extensions 46a, 47a are brought closer to each other. For example, the operator can elastically deform the pair of extensions 46a, 47a by hooking the finger hooks 46f, 47f of the pair of elastic claws 46, 47 and pinching the pair of extensions 46a, 47a. The pair of extensions 46a, 47a are elastically deformable until the pair of elastic claws 46, 47 contact the pair of convex wall portions 48, 49, respectively. The example of FIG. 10 shows a state in which the upper ends of the claw main bodies 46b, 47b contact the upper portions of the guide walls 48b, 49b, respectively.

[0075] When the extension 46a is elastically deformed toward the front (-X side) toward the base 45 and the elastic claw 46 is in contact with the convex wall 48, the dimension of the elastic claw 46 and the convex wall 48 in the front-rear direction X is smaller than the dimension of the hole 11a in the front-rear direction X. When the extension 47a is elastically deformed toward the rear (+X side) toward the base 45 and the elastic claw 47 is in contact with the convex wall 49, the dimension of the elastic claw 47 and the convex wall 49 in the front-rear direction X is smaller than the dimension of the hole 11b in the front-rear direction X. This allows an operator to pinch the pair of extensions 46a, 47a with his / her fingers to elastically deform them, thereby inserting the pair of elastic claws 46, 47 and the pair of convex wall portions 48, 49 into the pair of holes 11a, 11b from below. After the pair of claw main bodies 46b, 47b are inserted into the pair of holes 11a, 11b, the worker reduces the force applied to the pair of extensions 46a, 47a to restore and deform the pair of extensions 46a, 47a. This causes the pair of claw main bodies 46b, 47b to engage with the engaged portions 11c, 11d provided on the periphery of the pair of holes 11a, 11b from above, and the first protruding portion 42a is attached to the tabletop 10. The worker can attach the second protruding portion 42b to the tabletop 10 in the same manner as the first protruding portion 42a.

[0076] For example, the worker pinches the pair of extensions 46a, 47a of the first protrusion 42a with the fingers of one hand to elastically deform them, and pinches the pair of extensions 46a, 47a of the second protrusion 42b with the fingers of the other hand to elastically deform them, and holds the article placement tray 40 in this state, and brings the article placement tray 40 close to the top plate 10 from below, thereby attaching the first protrusion 42a and the second protrusion 42b to the top plate 10 as described above, and attaches the article placement tray 40 to the top plate 10. Similarly, the worker pinches the pair of extensions 46a, 47a of each protrusion 42 with both hands to elastically deform them, and holds the article placement tray 40 in this state, and moves the article placement tray 40 downward from the top plate 10, thereby removing the article placement tray 40 from the top plate 10. Thus, in this embodiment, the article placement tray 40 is detachably attached to the top plate 10.

[0077] In this embodiment, as described above, the first protrusion 42a and the second protrusion 42b are attached to the tabletop 10 by a snap-fit ​​structure that utilizes the elastic deformation of the elastic claws 46, 47. In this specification, "an object is attached to another object by a snap-fit ​​structure" may refer to an attachment structure that allows an object to be attached to another object by elastic deformation of at least one of the object and the other object when attaching the object to the other object.

[0078] The worker can also attach the article placement tray 40 to the top plate 10 from below without elastically deforming the elastic claws 46, 47 with his fingers, insert the upper ends of the claw main bodies 46b, 47b and the upper ends of the guide walls 48b, 49b into the holes 11a, 11b, and push the elastic claws 46, 47 and the protruding walls 48, 49 into the holes 11a, 11b, respectively. In this case, the inclined wall portions 46d of the claw main bodies 46b, 47b are pressed against the inner edges of the holes 11a, 11b from below, causing the extensions 46a, 47a to elastically deform in the front-rear direction X, and allowing the elastic claws 46, 47 to pass through the holes 11a, 11b. In this case, when each claw main body portion 46b, 47b passes through each hole portion 11a, 11b and is positioned within the hollow portion 13, each extension portion 46a, 47a automatically restores its original shape, and each claw main body portion 46b, 47b engages with each engaged portion 11c, 11d from above.

[0079] As shown in FIG. 11, the first protrusion 42a is disposed at a position overlapping the through hole 51a when viewed in the front-rear direction X. The distance L in the left-right direction Y between the first protrusion 42a and the control device 30 is smaller than the dimension W1 (see FIGS. 9 and 10) in the front-rear direction X of the portion of the first protrusion 42a located between the top plate 10 and the tray main body 41. That is, the dimension W1 in the front-rear direction X of at least a part of the portion of the first protrusion 42a located between the top plate 10 and the tray main body 41 is larger than the distance L in the left-right direction Y between the first protrusion 42a and the control device 30. In this embodiment, the dimension W1 in the front-rear direction X of the portion of the first protrusion 42a located between the top plate 10 and the tray main body 41 is larger than the distance L at any part of the first protrusion 42a. The dimension W1 in the front-to-rear direction X of the portion of the first protrusion 42a located between the top plate 10 and the tray main body 41 includes the dimension in the front-to-rear direction X of the wide portion 45a and the dimension in the front-to-rear direction X of the portion of the first protrusion 42a including the pair of extension portions 46a, 47a and the narrow portion 45b.

[0080] The distance L in the left-right direction Y between the first protrusion 42a and the control device 30, indicated by an arrow in FIG. 11, is the minimum distance in the left-right direction Y between the first protrusion 42a and the control device 30, and is the distance in the left-right direction Y between the first protrusion 42a and the connector portion 31. The distance L in the left-right direction Y between the first protrusion 42a and the control device 30 is, for example, approximately the same as the longitudinal dimension of an adapter (not shown) provided on the wiring 80. The distance L in the left-right direction Y between the first protrusion 42a and the control device 30 is greater than the dimension W2 in the left-right direction Y of the first protrusion 42a. As an example, the dimension W1 is approximately 35 mm or more and 50 mm or less. As an example, the distance L is approximately 30 mm or more and 45 mm or less. As an example, the dimension W2 is approximately 10 mm or more and 20 mm or less.

[0081] According to this embodiment, the tabletop lifting fixture 100 includes a tabletop 10, a support 20 that supports the tabletop 10 and has a lifting device 20a that lifts and lowers the tabletop 10, a control device 30 that controls the lifting device 20a, and an article placement tray 40 located below the tabletop 10. The article placement tray 40 has a tray main body 41 that faces the tabletop 10 with a gap therebelow, and a first protruding portion 42a that protrudes upward from the tray main body 41. The gap G between the tabletop 10 and the tray main body 41 is open to the rear side in the front-rear direction X that intersects with the up-down direction Z. At least a part of the control device 30 is exposed and disposed in the gap G between the tabletop 10 and the tray main body 41. Therefore, compared to a case in which the control device 30 is disposed isolated from the gap G, there is no need to prepare a separate space to isolate the control device 30, and therefore it is easy to widen the gap G between the tabletop 10 and the tray main body 41 without increasing the size of the tabletop lifting fixture 100. This ensures a space that the user can use below the top plate 10. Therefore, the user can easily insert his / her hand from behind into the gap G between the top plate 10 and the tray main body 41 to place items such as wiring on the tray main body 41.

[0082] According to the present embodiment, the control device 30 has a connector portion 30a to which the wiring 80 is connected. At least a part of the first protrusion 42a is located rearward of the connector portion 30a. Therefore, the first protrusion 42a can easily prevent the hand of a user inserted from the rear side into the gap G between the top plate 10 and the tray main body 41 from touching the connector portion 30a of the control device 30. The first protrusion 42a can also easily prevent the connector portion 30a from being visible to a user working in the gap G from the rear side. As a result, even if at least a part of the control device 30 is placed in a position exposed to the gap G, it is possible to prevent the user from accidentally touching the wiring 80 connected to the connector portion 30a and the user from accidentally pulling out the wiring 80. As described above, according to the present embodiment, by exposing at least a part of the control device 30 to the gap G, a space available to the user below the top plate 10 can be secured, while the first protrusion 42a can prevent the wiring 80 connected to the control device 30 from coming off.

[0083] According to the present embodiment, the dimension W1 in the front-rear direction X of at least a part of the first protrusion 42a located between the top plate 10 and the tray main body 41 is larger than the distance L between the first protrusion 42a and the control device 30 in the left-right direction Y. Therefore, it is easy to make the dimension W1 in the front-rear direction X of the first protrusion 42a relatively large while arranging the first protrusion 42a and the control device 30 relatively close to each other in the left-right direction Y. As a result, when a user performs work from the rear side of the gap G, the connector portion 30a can be easily covered by the first protrusion 42a as seen from the user, and it is possible to more suitably prevent the user's hand from accidentally touching the connector portion 30a and the user from accidentally pulling out the wiring 80. Therefore, it is possible to more suitably prevent the wiring 80 connected to the control device 30 from being disconnected.

[0084] Furthermore, according to this embodiment, the upper end of the first protrusion 42a is located above the connector portion 30a. Therefore, when a user performs work from the rear side of the gap G, the connector portion 30a is more likely to be covered by the first protrusion 42a when viewed from the user. This more suitably prevents the user's hand from accidentally touching the connector portion 30a and the user from accidentally pulling out the wiring 80.

[0085] Moreover, according to this embodiment, the rear edge of the tray main body 41 is provided with a rising portion 44 that protrudes upward. Therefore, the rising portion 44 can prevent items such as wiring placed on the tray main body 41 from falling off the rear end of the tray main body 41. Furthermore, the rising portion 44 can narrow the opening at the rear end of the gap G in the vertical direction Z. This makes it more difficult for the user to see the connector portion 30a when the user performs work from the rear side of the gap G. Therefore, it is possible to more suitably prevent the user's hand from accidentally touching the connector portion 30a and the user from accidentally pulling out the wiring 80.

[0086] Furthermore, according to this embodiment, the upper end of the first protrusion 42a is located higher than the upper end of the rising portion 44. Therefore, it is easy to suitably increase the size of the first protrusion 42a in the vertical direction Z. This makes it easier for the connector portion 30a to be covered by the first protrusion 42a when viewed from the user when the user performs work from the rear side of the gap G. This can more suitably prevent the user's hand from accidentally touching the connector portion 30a and the user from accidentally pulling out the wiring 80.

[0087] According to the present embodiment, the first protrusion 42a is provided in an intermediate portion of the tray main body 41, which is spaced apart from both ends in the front-rear direction X. Therefore, the portion of the tray main body 41 behind the first protrusion 42a can be easily used as a place for a user to place wiring of a device to be used on the top plate 10. In addition, when the wiring 80 connected to the control device 30 is placed on the portion of the tray main body 41 in front of the first protrusion 42a, the user can easily recognize that the wiring in front of the first protrusion 42a is the wiring 80 connected to the control device 30, and the user can be more prevented from accidentally pulling out the wiring 80.

[0088] Furthermore, according to this embodiment, the center of the first protrusion 42a in the front-rear direction X is located rearward of the center of the tray main body 41 in the front-rear direction X. This makes it easier to arrange the control device 30 forward of the first protrusion 42a. This makes it easier for the connector portion 30a to be covered by the first protrusion 42a when the user performs work from the rear side of the gap G.

[0089] Furthermore, according to this embodiment, the lifting device 20a has a pair of lifting legs 21, 22 spaced apart in the left-right direction Y. A pair of article loading trays 40 are arranged at an interval in the left-right direction Y. The position of the control device 30 in the left-right direction Y is between the pair of article loading trays 40 in the left-right direction Y. This makes it possible to prevent the control device 30 from coming into contact with the article loading tray 40, and makes it easy to attach the control device 30 and the article loading tray 40 to the top board 10.

[0090] According to the present embodiment, the control device 30 is provided at its rear with a holding section 62 capable of holding the power strip 70. Therefore, the user can connect the power cable of the device to be placed on the top plate 10 to the power strip 70 held by the holding section 62 and use the device. Since the control device 30 is disposed between the pair of article placement trays 40 in the left-right direction Y, the pair of article placement trays 40 are unlikely to get in the way when connecting the power cable to the power strip 70. By holding the power strip 70 in the holding section 62 provided at the rear of the control device 30, the power strip body 71 and the cable 72 of the power strip 70 can easily cover the gap between the control device 30 and the first protrusion 42a in the left-right direction Y from the rear. This makes it more difficult for the user to see the connector section 30a of the control device 30 from the rear. This can further prevent the user from accidentally pulling out the wiring 80.

[0091] Furthermore, according to this embodiment, the connector portion 30a is provided on a side surface of the control device 30 in the left-right direction Y, and is exposed in the gap G between the top plate 10 and the tray main body portion 41. This makes it easier to arrange a part of the wiring 80 connected to the connector portion 30a in the gap G, and makes it easier to cover the connector portion 30a with the first protrusion portion 42a. This more suitably prevents the user's hand from accidentally touching the connector portion 30a and the user from accidentally pulling out the wiring 80.

[0092] Moreover, according to this embodiment, the first protrusion 42a is provided on the edge of the tray main body 41 in the left-right direction Y on the side where the control device 30 is located. Therefore, the first protrusion 42a can be arranged closer to the control device 30 in the left-right direction Y. This makes it easier for the connector portion 30a to be covered by the first protrusion 42a when viewed from the user when the user performs work from the rear side of the gap G. This can more suitably prevent the user's hand from accidentally touching the connector portion 30a and the user from accidentally pulling out the wiring 80.

[0093] Further, according to the present embodiment, the upper end of the first protrusion 42a is attached to the top plate 10. Therefore, the first protrusion 42a, which is an attachment portion for attaching the article placement tray 40 to the top plate 10, can be used to prevent the wiring 80 from coming off. This makes it easier to simplify the structure of the article placement tray 40 compared to a case where an attachment portion for attaching the article placement tray 40 to the top plate 10 is provided separately from the first protrusion 42a. Furthermore, since the first protrusion 42a can be provided over the entire gap G between the top plate 10 and the tray main body 41 in the vertical direction Z, when the user performs work from the rear side of the gap G, the connector portion 30a can be more suitably covered by the first protrusion 42a as viewed from the user. Therefore, it is more suitably prevented that the user's hand touches the connector portion 30a inadvertently, and that the user erroneously pulls out the wiring 80.

[0094] Furthermore, according to this embodiment, the article placement tray 40 has a second protrusion 42b protruding upward from the tray main body 41. The second protrusion 42b is provided on an edge of the tray main body 41 in the left-right direction Y, the edge being on the opposite side to the side on which the control device 30 is located. An upper end of the first protrusion 42a and an upper end of the second protrusion 42b are attached to the top plate 10. Therefore, the first protrusion 42a and the second protrusion 42b allow the article placement tray 40 to be stably attached to the top plate 10.

[0095] Furthermore, according to this embodiment, the lift-top display unit 100 includes a shielding member 50 having a shielding wall portion 51 that covers the gap G between the top plate 10 and the tray main body portion 41 from the front side in the front-rear direction X. Therefore, the shielding wall portion 51 can prevent the inside of the gap G between the top plate 10 and the tray main body portion 41 from being seen from the front. This improves the appearance of the lift-top display unit 100 when viewed from the front. In addition, the shielding wall portion 51 can prevent items such as wiring placed on the tray main body portion 41 from falling off the front end portion of the tray main body portion 41.

[0096] According to the present embodiment, the lifting device 20a has the lifting unit 23 located forward of the shielding wall 51. The shielding wall 51 has through holes 51a and 51c penetrating the shielding wall 51 in the front-rear direction X. The wiring connected to the control device 30 includes wirings 82 and 83 that connect the control device 30 and the lifting unit 23 through the through holes 51a and 51c. The shielding member 50 has a wiring support portion 52 that can support the wiring 80 connected to the control device 30. Therefore, the control device 30 can be suitably connected to the lifting unit 23 via the wirings 82 and 83 while the control device 30 is disposed at a position where at least a part of the control device 30 is exposed to the gap G.

[0097] According to the present embodiment, the protrusion 42 as an attachment portion has the claw main body portions 46b, 47b as engagement portions that engage from above with the engaged portions 11c, 11d provided on the top plate 10. Therefore, the article placement tray 40 can be attached to the top plate 10 without fixing the protrusion 42 with a screw member. This allows the connection portion between the article placement tray 40 and the top plate 10 to have flexibility compared to when the protrusion 42 is firmly fixed to the top plate 10 with a screw member such as a bolt. Therefore, even if the article placement tray 40 collides with another article placed below the top plate 10 when the top plate 10 descends, the relative position of the article placement tray 40 with respect to the top plate 10 changes, making it easier to release the force applied to the article placement tray 40. In particular, because the claw main bodies 46b, 47b engage with the engaged parts 11c, 11d from above, even if the article placement tray 40 collides with another article and receives an upward force, the claw main bodies 46b, 47b can move upward relative to the engaged parts 11c, 11d, making it easy to release the force. Therefore, even if the article placement tray 40 collides with another article when the top plate 10 is lowered, damage to the article placement tray 40 can be suppressed.

[0098] Furthermore, according to this embodiment, the protrusion 42 is attached to the top plate 10 by a snap-fit ​​structure. Therefore, the protrusion 42 can be easily and stably attached to the top plate 10, while more suitably imparting flexibility to the connection portion between the article loading tray 40 and the top plate 10. This can further prevent the article loading tray 40 from being damaged.

[0099] According to the present embodiment, the top plate 10 is provided with a hollow portion 13. The bottom surface of the top plate 10 is provided with holes 11a and 11b that are connected to the inside of the hollow portion 13. The protruding portion 42 has elastic claw portions 46 and 47 that are passed through the holes 11a and 11b. The elastic claw portions 46 and 47 extend in the vertical direction Z and have extension portions 46a and 47a that are elastically deformable in the front-rear direction X that intersects with the vertical direction, and claw main portions 46b and 47b that protrude from the extension portions 46a and 47a in the front-rear direction X. The claw main portions 46b and 47b are engagement portions that engage with the engaged portions 11c and 11d provided on the periphery of the holes 11a and 11b from above inside the hollow portion 13. Therefore, the protruding portion 42 can be suitably attached to the top plate 10 by a snap-fit ​​structure.

[0100] According to the present embodiment, the extensions 46a and 47b have finger hooks 46f and 47f located below the holes 11a and 11b. Therefore, by hooking fingers on the finger hooks 46f and 47f and applying force, the extensions 46a and 47b of the protrusion 42 attached to the top plate 10 can be easily elastically deformed in the front-rear direction X. As a result, the protrusion 42 attached to the top plate 10 by the snap-fit ​​structure can be easily removed by moving the protrusion 42 downward relative to the top plate 10 while the extensions 46a and 47a are elastically deformed in the front-rear direction X. Therefore, the article placement tray 40 can be easily attached to and detached from the top plate 10. In addition, in the present embodiment, the finger hooks 46f and 47f have protrusions 46e formed thereon, so that the fingers hooked on the finger hooks 46f and 47f can be prevented from slipping.

[0101] According to this embodiment, the elastic claws 46, 47 are provided as a pair with a gap therebetween in the front-rear direction X. Therefore, the pair of elastic claws 46, 47 allow the protrusion 42 to be stably attached to the tabletop 10. Furthermore, by pinching the pair of elastic claws 46, 47 together in the front-rear direction X, the extensions 46a, 47a of the pair of elastic claws 46, 47 can be elastically deformed simultaneously in the front-rear direction X. Therefore, the protrusion 42 can be stably attached to the tabletop 10, while the work of attaching and detaching the protrusion 42 to and from the tabletop 10 can be easily performed.

[0102] According to the present embodiment, the holes 11a, 11b are provided in a pair with an interval in the front-rear direction X. The pair of elastic claws 46, 47 are passed through the pair of holes 11a, 11b, respectively. The protrusion 42 has a pair of convex wall portions 48, 49 protruding upward. The pair of convex wall portions 48, 49 are located between the pair of elastic claws 46, 47 in the front-rear direction X, and are passed through the pair of holes 11a, 11b, respectively. Therefore, when a force in the front-rear direction X is applied to the protrusion 42, the convex wall portions 48, 49 come into contact with the inner edges of the holes 11a, 11b, thereby preventing the force in the front-rear direction X from being applied to the elastic claws 46, 47. This prevents the extensions 46a, 47a of the elastic claws 46, 47 from being unintentionally elastically deformed in the front-rear direction X, and prevents the protrusion 42 from coming off the top plate 10. Furthermore, even if the article placement tray 40 collides with another article when the top plate 10 is lowered and the article placement tray 40 moves relative to the top plate 10, the article placement tray 40 can be prevented from coming off the top plate 10.

[0103] Furthermore, according to this embodiment, the protrusions 42 are provided as a pair spaced apart in the left-right direction Y intersecting with the up-down direction Z. Therefore, the pair of protrusions 42 allows the article loading tray 40 to be attached to the top plate 10 more stably.

[0104] Furthermore, according to this embodiment, the protrusion 42 is provided in an intermediate portion of the tray main body 41, which is distant from both ends in the intersecting direction intersecting with the up-down direction Z, i.e., in the front-rear direction X. Therefore, the tray main body 41 can be supported more stably by the protrusion 42 than when the protrusion 42 is provided at either of both ends in the front-rear direction X of the tray main body 41. Also, the tray main body 41 can be prevented from being supported as a cantilever in the front-rear direction X, and even when a heavy object is placed on the tray main body 41, the tray main body 41 can be prevented from tilting.

[0105] Furthermore, according to this embodiment, the liftable tabletop fixture 100 includes a shielding member 50 having a shielding wall portion 51 that covers the gap G between the tabletop 10 and the tray main body portion 41 from one side. The lower end of the shielding member 50 is located lower than the lower end of the article loading tray 40. Therefore, when the tabletop 10 descends, the shielding member 50 can easily hit other articles placed below the tabletop 10 before the article loading tray 40 does. This can prevent the article loading tray 40 from colliding with other articles, and can further prevent damage to the article loading tray 40.

[0106] Furthermore, according to this embodiment, the liftable tabletop fixture 100 includes a fixing member 60 that fixes the control device 30 to the tabletop 10. The lower end of the fixing member 60 is located lower than the lower end of the article loading tray 40. Therefore, when the tabletop 10 descends, the fixing member 60 can easily hit other articles placed below the tabletop 10 before the article loading tray 40 does. This can prevent the article loading tray 40 from colliding with other articles, and can further prevent damage to the article loading tray 40.

[0107] Moreover, according to this embodiment, the article loading tray 40 is made of resin. Therefore, compared to when the article loading tray 40 is made of metal, the article loading tray 40 can be easily elastically deformed. As a result, even if the article loading tray 40 collides with another article placed below the top plate 10 when the top plate 10 descends, the article loading tray 40 elastically deforms, making it easy to release the force applied to the article loading tray 40. Therefore, damage to the article loading tray 40 can be more suitably suppressed.

[0108] Further, according to this embodiment, the tabletop lifting fixture 100 is an electric tabletop lifting fixture. In an electric tabletop lifting fixture, the tabletop 10 is easier to raise and lower than in a manual tabletop lifting fixture, but the user is more likely to inadvertently lower the tabletop 10 even if other items are placed below the tabletop 10. Therefore, in an electric tabletop lifting fixture, the item placement tray 40 is more likely to collide with other items unintentionally when the tabletop 10 is lowered than in a manual tabletop lifting fixture. Even in such an electric tabletop lifting fixture 100, the item placement tray 40 can be prevented from being damaged as described above according to this embodiment. Therefore, when the tabletop lifting fixture 100 is an electric tabletop lifting fixture, the effect of preventing the item placement tray 40 from being damaged can be more effectively obtained.

[0109] <Second embodiment> This embodiment differs from the first embodiment in the configuration of the first protrusion 242a. Note that the same configuration as in the first embodiment may be appropriately denoted by the same reference numerals and the description thereof may be omitted.

[0110] As shown in FIG. 12, in the article placement tray 240 of the tabletop lifting type furniture 200 of this embodiment, the upper end of the first protrusion 242a is disposed downwardly and away from the lower surface of the tabletop 10. In this embodiment, the first protrusion 242a is not attached to the tabletop 10. Even in this case, as in the first embodiment, the first protrusion 242a can prevent the user from carelessly touching the wiring 80 connected to the connector portion 30a and from accidentally pulling out the wiring 80. The first protrusion 242a is rectangular. Unlike the first embodiment, the first protrusion 242a does not have the elastic claws 46, 47 and the convex wall portions 48, 49.

[0111] The tray body 41 of the article loading tray 240 may, for example, have a front (-X side) end fixed to the shielding member 50, or may have an attachment portion that is attached to the top board 10 separately from the first protrusion 242a. The other configurations of the top board lifting type fixture 200 are similar to the other configurations of the top board lifting type fixture 100 in the first embodiment.

[0112] Although the embodiments of the present invention have been described above, the present invention is not limited to the configurations of the above-described embodiments, and the following configurations and methods can also be adopted.

[0113] The number of article placement trays is not particularly limited as long as it is one or more. The gap between the top plate and the tray main body may have any configuration as long as it is open to a first side (rear side) in a first direction (front-rear direction X). The gap between the top plate and the tray main body may be closed on at least one side in a second direction (left-right direction Y), or may be open to a second side (front side). The gap between the top plate and the tray main body may be open to both sides in the first direction and both sides in the second direction. The shape of the tray main body is not particularly limited.

[0114] The first protrusion may be provided at any location of the tray main body and may have any shape, so long as it is disposed at a position different from the control device in the second direction (left-right direction Y) and at least a part of it is located on the first side (rear side) of the connector part. The first protrusion may be provided at an end of the tray main body on the first side, or may be provided at an intermediate part of the tray main body away from both ends in the second direction. The center of the first protrusion in the first direction may be located at the same position in the first direction as the center of the tray main body in the first direction, or may be located on the second side of the center of the tray main body in the first direction. A plurality of first protrusions may be provided on one article placement tray. When a plurality of connector parts are provided on the control device, at least a portion of the first protrusion may be located on the first side of at least one connector part. A portion of the first protrusion may be located at the same position as the connector part in the first direction (front-rear direction X), or may be located on the second side (front side) of the connector part. When the first protrusion is attached to the top plate, the first protrusion may be attached to the top plate by any structure. The number of the first protrusions is not particularly limited as long as it is equal to or greater than 1. A plurality of the first protrusions may be provided on one article mounting tray.

[0115] The support may have any configuration as long as it has a lifting device for lifting and lowering the top plate and supports the top plate. The support may support the top plate by one leg. The lifting device may have any structure as long as it can lift and lower the top plate. The shielding member may not be provided.

[0116] The first direction is not particularly limited as long as it is a direction that intersects with the up-down direction. The first direction may be the left-right direction Y in the above-mentioned embodiment. In this case, the second direction is the front-rear direction X in the above-mentioned embodiment. The first side of the first direction may be the front side in the front-rear direction. In this case, the second side of the first direction is the rear side in the front-rear direction.

[0117] The lift-top type fixture according to the present invention may be any fixture with a liftable top, and is not limited to a lift-top type desk.

[0118] The configurations and methods described in this specification can be combined as appropriate within the scope of not being mutually inconsistent. [Explanation of symbols]

[0119] 10...tabletop, 20...support, 20a...lifting device, 21, 22...lifting legs, 23...lifting section, 30...control device, 30a, 31, 32, 33, 34...connector section, 40, 240...article placement tray, 41...tray body, 42a, 242a...first protrusion, 42b...second protrusion, 44...rising section, 50...shielding member, 51...shielding wall, 51a, 51b, 51c, 51d...through hole, 52...wiring support section, 62...holding section, 70...power tap, 80, 81, 82, 83, 84...wiring, 100, 200...tabletop lifting fixture, G...gap, L...distance, W1...dimension, X...front-back direction (first direction), Y...left-right direction (second direction), Z...up-down direction

Claims

1. The top plate and A support body having a lifting device for lifting and lowering the tabletop and supporting the tabletop; A control device for controlling the lifting device; An article placement tray located below the top plate; Equipped with The article placement tray is a tray main body portion facing the top plate with a gap therebelow; a first protrusion protruding upward from the tray body; having A gap between the top plate and the tray main body is open to a first side in a first direction intersecting with a vertical direction, At least a part of the control device is disposed in an exposed space between the top plate and the tray body, The control device has a connector portion to which a wiring is connected, A lift-top display unit, wherein at least a portion of the first protrusion is located on the first side relative to the connector portion.

2. A tabletop lifting display fixture as described in claim 1, wherein the dimension in the first direction of at least a portion of the first protrusion located between the tabletop and the tray main body is greater than the distance between the first protrusion and the control device in a direction intersecting the vertical direction and perpendicular to the first direction.

3. The display unit with a liftable top as described in claim 1 , wherein an upper end of the first protrusion is located above the connector portion.

4. The lift-top display unit according to claim 1 , wherein an upwardly protruding raised portion is provided on the edge portion on the first side of the tray main body.

5. The display unit with a liftable top as described in claim 4, wherein an upper end of the first protrusion is positioned higher than an upper end of the raised portion.

6. The lift-top display unit according to claim 1 , wherein the first protrusion is provided at a middle portion of the tray main body portion that is spaced apart in the first direction from both end portions in the first direction.

7. The display unit with a liftable top panel according to claim 1 , wherein the center of the first protrusion in the first direction is located on the first side of the center of the tray main body in the first direction.

8. the lifting device has a pair of lifting legs spaced apart in a second direction that intersects with the up-down direction and is perpendicular to the first direction, The article placement trays are arranged in a pair at an interval in the second direction, The lift-top display unit according to claim 1 , wherein the position of the control device in the second direction is between the positions of the pair of article loading trays in the second direction.

9. The lift-top display unit according to claim 8 , further comprising a holding portion capable of holding a power strip provided on the first side of the control device.

10. The display unit with a liftable top plate according to claim 8 , wherein the connector portion is provided on a side surface of the control device facing the second direction and is exposed in a gap between the top plate and the tray main body portion.

11. The lift-top display unit according to claim 8 , wherein the first protrusion is provided on an edge of the tray main body in the second direction on a side where the control device is located.

12. the article placement tray has a second protruding portion protruding upward from the tray body portion, the second protrusion is provided on an edge portion of the tray main body portion in the second direction opposite to a side on which the control device is located, The tabletop lifting fixture according to claim 11, wherein an upper end of the first protrusion and an upper end of the second protrusion are attached to the tabletop.

13. The display unit with a liftable top plate according to any one of claims 1 to 11, wherein an upper end of the first protrusion is attached to the top plate.

14. The liftable display fixture according to claim 1 , further comprising a shielding member having a shielding wall portion that covers the gap between the top plate and the tray main body portion from the second side in the first direction.

15. the lifting device has a lifting part located on the second side relative to the shielding wall part, a through hole penetrating the shielding wall in the first direction is formed in the shielding wall, the wiring connected to the control device includes wiring that passes through the through hole and connects the control device and the lifting unit, The lift-top display unit according to claim 14, wherein the shielding member has a wiring support portion capable of supporting wiring connected to the control device.

Images