Top board elevation type furniture

Abstract

To provide a top board elevation type desk 1 excellent in wiring and workability during maintenance.SOLUTION: A top board elevation type desk 1 has a top board 2, a pair of leg bodies 15, a drive unit 14, a control unit 20 or a power supply tap 24, and a hiding member 40. The pair of leg bodies 15 supports the top board 2. The drive unit 14 is included in the pair of leg bodies 15 and elevates the top board 2 in the vertical direction. The control unit 20 transmits to the drive unit 14 an electric signal and controls the elevating operation of the top board 2. The power supply tap 24 can supply power. The hiding member 40 is disposed below the top board 2 and crosses a visual field from the front. The control unit 20 or the power supply tap 24 is disposed in an open space S formed at the back of the hiding member 40. The open space S is opened backward or downward.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Conventionally, in offices and public facilities, furniture with tabletops, such as desks and tables, are used. The height of the tabletop that is easy to work at varies from person to person depending on the posture, physique, sex, and preferences of the user. Furniture with a fixed tabletop height cannot accommodate such situations, so tabletop lifting furniture that can change the height of the tabletop in the vertical direction is widely used. As a method for changing the height of the tabletop in the vertical direction, the use of gas springs and gears has been proposed. However, these methods have the problem that it may be difficult for users with weak strength to operate them. In view of such problems, in order to improve the operability of the lifting means, many tabletop lifting furniture using an electric drive unit that can automatically change the height of the tabletop up and down is adopted. With this method, the user can change the height of the tabletop with a simple operation.

[0003] Such a lifting tabletop fixture may have a pair of legs that support the tabletop, a connecting member that connects between the pair of legs to support the tabletop, a drive unit that raises and lowers the tabletop in the vertical direction, a control unit that controls the operation of the drive unit, a power strip that supplies power to electronic devices used by users in their work, and a wiring tray that can accommodate various wiring.In this case, by containing the control unit inside the connecting member and accommodating the control unit or the power strip inside the wiring tray, the control unit and the power strip are not exposed to the outside, resulting in a good appearance. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6627140 [Patent Document 2] Patent No. 6729666 [Patent Document 3] Patent Publication No. 2021-45354 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in this case, when the control unit has a mechanical malfunction or the like, maintenance work or wiring work must be performed by removing the control unit from inside the connecting member or wiring tray and removing the power strip from the wiring tray, which causes a problem of poor workability.

[0006] The present invention aims to provide a lift-top type fixture that is easy to work with when wiring and maintaining the fixture. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention proposes the following means. The lifting tabletop fixture of the first aspect of the present invention comprises a tabletop, a pair of legs, a drive unit, a control unit or a power tap, and a concealing member. The pair of legs support the tabletop. The drive unit is included in the pair of legs and raises and lowers the tabletop in the vertical direction. The control unit transmits an electrical signal to the drive unit to control the lifting and lowering operation of the tabletop. The power tap is capable of supplying power. The concealing member is disposed below the tabletop and blocks the view from the front. The control unit or the power tap is disposed in an open space formed behind the concealing member. The open space is open to the rear and below.

[0008] This allows wiring and maintenance of the control unit or power tap to be performed from behind and below the control unit or power tap without removing the control unit or power tap from the lift-up display unit. This improves workability during wiring and maintenance. In addition, since a concealing member is disposed in front of the control unit or power tap, the control unit or power tap is less visible from the front, improving appearance.

[0009] In a second aspect of the present invention, in the liftable tabletop fixture described in the first aspect, the lower end of the concealing member is positioned lower than the lower end of the control unit or the power strip. When a user lowers the top, a component part of the lift-top display unit may come into contact with an object, such as a chair, below the top. In this case, the concealing member, which is located below the control unit or power strip, will likely come into contact with the object, causing the top to stop moving downward. This prevents damage to the control unit or power strip, which are precision machines. In addition, the control unit or power strip is hidden by the concealing member, making it difficult to see from the front.

[0010] In a third aspect of the present invention, in the liftable tabletop fixture according to the first or second aspect, the concealing member connects the pair of legs. This increases the supporting strength of the tabletop.

[0011] In a fourth aspect of the present invention, in the liftable tabletop fixture according to any one of the first to third aspects, the lower end of the concealing member is disposed lower than the lower end of the drive unit. When a user lowers the tabletop, the components of the tabletop lifting fixture may come into contact with an object, such as a chair, underneath the tabletop. In this case, the concealing member, which is located below the drive unit, is likely to come into contact with the object, stopping the tabletop from lowering. This prevents damage to the drive unit, which is a precision machine.

[0012] In a fifth aspect of the present invention, in the liftable tabletop fixture described in any one of the first to fourth aspects, the concealing member has an internal space through which wiring that electrically connects the control unit and the drive unit can be inserted.

[0013] Since the wiring can be inserted into the internal space of the concealing member, the wiring is not exposed to the outside, which improves appearance. Also, when a user of the lift-top display unit lowers the top, the components of the lift-top display unit may come into contact with an object such as a chair below the top. Even in this case, since most of the wiring is arranged in the internal space, there is little chance that the wiring will come into contact with the object. This makes it possible to prevent damage to the wiring.

[0014] In a sixth aspect of the present invention, in the liftable tabletop fixture according to the fifth aspect, the concealing member has an opening that connects the internal space with the external space. This allows access to the internal space through the open portion to perform wiring work, improving workability during wiring and maintenance.

[0015] In a seventh aspect of the present invention, in the lifting tabletop fixture according to the fifth or sixth aspect, the drive unit has an outlet into which a wire is plugged in. The outlet is exposed to the outside of the concealing member. This makes it easy to insert and remove wiring, improving workability during wiring and maintenance.

[0016] In an eighth aspect of the present invention, the lifting tabletop fixture according to any one of the first to seventh aspects has a removable cover member that conceals the drive unit. The cover member conceals the drive unit, improving its appearance. Also, by removing the cover member, the drive unit's socket is exposed to the outside. This makes it easy to insert and remove wires, improving workability during wiring and maintenance.

[0017] In a ninth aspect of the present invention, in the lifting table display fixture according to any one of the first to eighth aspects, both the control unit and the power tap are disposed in an open space formed behind the concealing member. The control unit is disposed between the concealing member and the power tap in the front-rear direction. This makes it easier to wire the control unit to supply power, and also reduces the possibility of accidentally touching the control unit and disconnecting the wiring when a user connects an electronic device used in the office to a power strip to supply power. Effect of the Invention

[0018] The liftable tabletop fixture of the present invention provides good workability during wiring and maintenance. [Brief description of the drawings]

[0019] [Figure 1] 1 is a perspective view of a top-height adjustable desk according to an embodiment of the present invention, viewed from above and from the front. [Diagram 2] FIG. 4 is a perspective view of the lifting legs and the concealing member. [Diagram 3] 13 is a perspective view of the lifting legs and the concealing member with the cover member removed. FIG. [Figure 4] FIG. 4 is a front view of the drive unit and the concealing member. [Diagram 5] FIG. 4 is a side view of the drive unit, the concealment member, and the control unit. [Figure 6] FIG. 1 is an explanatory diagram of a wiring layout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of a liftable tabletop display unit will be described with reference to the drawings. Fig. 1 is a perspective view from above and the front of a desk 1 with a height adjustable top according to an embodiment. In Fig. 1, only the outline of a top 2 is shown by a two-dot chain line. The furniture with a height adjustable top according to the embodiment is, for example, the desk 1 with a height adjustable top.

[0021] In this application, the Z direction, X direction, and Y direction of the Cartesian coordinate system are defined as follows. The Z direction is the up-down direction of the desk 1 with adjustable top. The +Z direction is upward, and the -Z direction is downward. The X direction is the front-to-back direction of the desk 1 with adjustable top. The +X direction is backward, and the -X direction is forward. The Y direction is the left-to-right direction of the desk 1 with adjustable top. The direction approaching the center of the desk 1 in the left-to-right direction is the inner left-to-right direction, and the direction moving away from the center in the left-to-right direction is the outer left-to-right direction.

[0022] The desk 1 with a height-adjustable top comprises a top 2, a lifting leg 10, a concealing member 40, an upper arm 4, and a lower arm 8. The tabletop 2 is a flat plate parallel to the XY plane. The tabletop 2 is rectangular in plan view. The length direction of the short side of the tabletop 2 is the front-rear direction, and the length direction of the long side is the left-right direction. The upper surface of the tabletop 2 is a work surface.

[0023] The upper arm 4 is fixed to the underside of the tabletop 2. The upper arm 4 extends in the front-rear direction. The length of the upper arm 4 in the front-rear direction is slightly shorter than the length of the tabletop 2 in the front-rear direction. A pair of upper arms 4 are disposed at both ends of the tabletop 2 in the left-right direction.

[0024] The lifting legs 10 are disposed below the upper arm 4. The upper ends of the lifting legs 10 are fixed to the upper arm 4. The lifting legs 10 are disposed in the center of the tabletop 2 in the front-to-rear direction. The width of the lifting legs 10 in the front-to-rear direction is small. A pair of lifting legs 10 are disposed at both ends of the tabletop 2 in the left-to-right direction.

[0025] The lower arm 8 is a grounding part that comes into contact with the floor surface. The lower arm 8 is disposed below the lifting legs 10. The lower arm 8 extends in the front-to-rear direction. The central part of the lower arm 8 in the front-to-rear direction is fixed to the lower end of the lifting legs 10. A pair of lower arms 8 are disposed at both ends of the tabletop 2 in the left-to-right direction. In the present application, the combination of the upper arm 4, the lifting legs 10 and the lower arm 8 is referred to as legs 15. A pair of legs 15 are disposed at both ends of the tabletop 2 in the left-right direction.

[0026] The concealing member 40 is disposed between the pair of legs 15 in the left-right direction. The concealing member 40 connects the pair of legs 15. Both left-right ends of the concealing member 40 are fixed to the upper ends of the pair of lifting legs 10. The concealing member 40 is also fixed to the tabletop 2. The concealing member 40 assists the synchronous lifting and lowering actions of the pair of lifting legs 10. By connecting the concealing member 40 to the pair of legs 15, the supporting strength of the tabletop 2 can be increased.

[0027] The tabletop 2 is supported by a pair of legs 15 and a concealing member 40. The tabletop 2 can be raised and lowered in the vertical direction by the lifting legs 10 extending and retracting in the vertical direction. This allows the user to select the height of the tabletop 2 that is most convenient for work depending on their posture, physique, sex, preferences, etc.

[0028] Fig. 2 is a perspective view of the lifting legs 10 and the concealing member 40. Fig. 3 is a perspective view of the lifting legs 10 and the concealing member 40 with the cover member 18 removed. As shown in FIG. 2, the lifting leg 10 includes an extendable portion 12, a drive unit 14, and a cover member 18.

[0029] The telescopic section 12 has a number of square tubes. The multiple square tubes are arranged coaxially with respect to a central axis that is parallel to the vertical direction. The lower end of the outermost square tube is connected to the lower arm 8 (see FIG. 1). The upper end of the innermost square tube is connected to the drive unit 14. The multiple square tubes move relative to each other in the vertical direction, causing the telescopic section 12 to telescope in the vertical direction.

[0030] The drive unit 14 extends and retracts the telescopic section 12 in the up-down direction. An electric motor and the like are arranged inside the drive unit 14. The drive unit 14 is in the shape of a roughly rectangular parallelepiped box. The drive unit 14 is arranged above the telescopic section 12. The upper end of the telescopic section 12 is connected to the outer ends in the left-right direction of the lower surface of the drive unit 14. The drive unit 14 may be arranged inside the telescopic section 12.

[0031] The drive unit 14 has a socket 16 into which a connector for electrical wiring is inserted. The socket 16 is disposed near the upper end of the inner surface in the left-right direction of the drive unit 14. The outer surface in the left-right direction of the drive unit 14 is concealed by the upper arm 4 (see FIG. 1).

[0032] The cover member 18 is made of a resin material or the like. The cover member 18 conceals the front surface and the inner left and right surfaces of the drive unit 14. Since the drive unit 14 is concealed by the cover member 18, it looks good. The cover member 18 is detachable from the lift-top desk 1. When the cover member 18 is removed, the insertion port 16 of the drive unit 14 is exposed to the outside, as shown in FIG. 3.

[0033] The concealing member 40 is formed by press molding a steel plate material. The concealing member 40 is disposed between a pair of legs 15 in the left-right direction. The shape of the cross section of the concealing member 40 perpendicular to the left-right direction is substantially J-shaped. The concealing member 40 has a first plate portion 40p, a second plate portion 40v, and a groove portion 40g.

[0034] The first plate portion 40p is disposed at the upper end portion of the concealment member 40. The first plate portion 40p is parallel to the rear surface of the top plate 2. The first plate portion 40p is fixed to the top plate 2 by bolts or the like. The second plate portion 40v extends downward from the first plate portion 40p. The second plate portion 40v is perpendicular to the rear surface of the top plate 2.

[0035] The groove 40g extends forward from the lower end of the second plate 40v and further upward. The groove 40g opens upward. Various wires (cables) can be inserted into the internal space 42 of the groove 40g, including a wire 14c (see FIG. 6) that electrically connects the control unit 20 and the drive unit 14, which will be described later. The groove 40g is disposed below and away from the top plate 2. The concealing member 40 opens forward between the top plate 2 and the groove 40g. The opening of the concealing member 40 is an opening 43 that communicates the internal space 42 with the external space. When the cover member 18 (see FIG. 2) is removed, the insertion port 16 of the drive unit 14 is exposed to the outside through the opening 43 of the concealing member 40.

[0036] The groove portion 40g is disposed between the pair of drive units 14 in the left-right direction. The second plate portion 40v extends outward in the left-right direction from the groove portion 40g. The left-right ends of the second plate portion 40v are disposed behind the drive unit 14 and are fixed to the drive unit 14 by bolts or the like. As a result, the concealing member 40 is disposed between the rear ends of the pair of lifting legs 10.

[0037] 4 is a front view of the drive unit 14 and the concealing member 40. The lower end of the concealing member 40 is disposed lower than the lower end of the drive unit 14. When a user of the lift-top desk 1 lowers the top 2, components of the lift-top desk 1 may come into contact with an object, such as a chair, below the top 2. When this happens, there is a high possibility that the concealing member 40, which is located below the drive unit 14, will come into contact with the object, stopping the descent of the top 2. This prevents damage to the drive unit 14, which is a precision machine.

[0038] As shown in FIG. 1, the desk 1 with a height adjustable top has an operation switch 22 and a communication device 25. The operation switch 22 is a switch that is operated by the user to raise and lower the tabletop 2. The operation switch 22 is fixed to the front of the lower surface of the tabletop 2. The operation switch 22 is disposed near one end of the tabletop 2 in the left-right direction.

[0039] The communication device 25 is capable of transmitting an electric signal or supplying power to the drive unit 14. The communication device 25 includes a control unit 20 and a power tap 24. The communication device 25 may include only one of the control unit 20 and the power tap 24. The control unit 20 transmits an electrical signal to the drive unit 14 to control the operation of the drive unit 14 , thereby controlling the lifting and lowering operation of the pair of lifting legs 10 . The power tap 24 is disposed behind the control unit 20. The power tap 24 is capable of supplying power to the control unit 20.

[0040] The communication device 25 is disposed in an open space S formed behind the concealing member 40. The open space S is open to the rear and downward. The open space S is formed in the center in the left-right direction of the top board 2. A pair of wiring trays 30 are disposed on the outside of the open space S in the left-right direction.

[0041] 5 is a side view of the drive unit 14, the concealing member 40, and the communication device 25. A support bracket 26 supporting the power tap 24 is disposed in the open space S behind the concealing member 40. The support bracket 26 supports the power tap 24 with the socket of the power tap 24 facing backward. The upper end of the support bracket 26 is fixed to the top plate 2. The support bracket 26 may be removable from the top plate 2. A connection member 27 connects the lower part of the support bracket 26 to the concealing member 40. The connection member 27 may be removable from the support bracket 26 and the concealing member 40. The control unit 20 is disposed above the connection member 27 and supported by the connection member 27. The support bracket 26 and the connection member 27 are disposed in the open space S together with the power tap 24 and the control unit 20.

[0042] In this manner, the communication device 25 is disposed in the open space S formed behind the concealing member 40. That is, the communication device 25 is not disposed inside the concealing member 40, the wiring tray 30, etc. The open space S is open to the rear and downward.

[0043] As a result, when wiring or maintaining the communication device 25, the work can be performed from behind or below the communication device 25 without removing the communication device 25 from the lift-top desk 1. This improves workability during wiring and maintenance. Even if the control unit 20 experiences a mechanical malfunction, maintenance work is easy to perform. In addition, since the concealing member 40 is disposed in front of the communication device 25, the communication device 25 is less visible from the front, improving appearance.

[0044] The communication device 25 is disposed behind the concealing member 40. This increases the distance in the front-rear direction from the front end of the tabletop 2 to the communication device 25. Therefore, even when the tabletop 2 is lowered, the communication device 25 is unlikely to interfere with the lower legs of the user or with items such as a chair stored below the tabletop 2.

[0045] The lower end of the concealing member 40 is disposed below the lower end of the communication device 25 . As described above, when a user lowers the top board 2, components of the height-adjustable desk 1 may come into contact with an object, such as a chair, below the top board 2. In this case, there is a high possibility that the concealing member 40, which is located below the communication device 25, will come into contact with the object, causing the lowering of the top board 2 to stop. This prevents damage to the communication device 25, which is a precision machine. Also, the communication device 25 is shielded by the concealing member 40, making it difficult to see from the front.

[0046] Fig. 6 is an explanatory diagram of the wiring layout. In Fig. 6, only the outline of the tabletop 2 is shown, and the illustration of the extendable portion 12 of the lifting legs 10 and the like is omitted.

[0047] The wiring 22c of the operation switch 22 extends rearward from the operation switch 22. The wiring 22c enters the internal space 42 from the front opening 43 of the concealing member 40. The wiring 22c extends inward in the left-right direction along the internal space 42. The second plate portion 40v of the concealing member 40 has a through hole 40h in the center in the left-right direction. The through hole 40h penetrates the second plate portion 40v in the front-rear direction. The wiring 22c extends rearward through the through hole 40h. A connector at the tip of the wiring 22c is connected to the control unit 20.

[0048] Wires 14c of the drive units 14 extend from the control unit 20. A pair of wires 14c extend corresponding to the drive units 14 of the pair of lifting legs 10. The wires 14c pass through the through holes 40h of the concealing member 40 and enter the internal space 42. The wires 14c extend outward in the left-right direction along the internal space 42. The connectors at the ends of the pair of wires 14c are inserted into the sockets 16 of the corresponding drive units 14.

[0049] Since the wiring can be inserted into the internal space 42 of the concealing member 40, the wiring is not exposed to the outside, and the appearance is good. In addition, when the user lowers the top board 2, the components of the desk 1 with a height-adjustable top board may come into contact with an object such as a chair located below the top board 2. Even in this case, since most of the wiring is arranged in the internal space 42, the possibility of the wiring coming into contact with the object is small. This makes it possible to suppress damage to the wiring. In addition, since there is an opening 43 that communicates between the internal space 42 and the external space, the internal space 42 can be accessed from the opening 43 to perform wiring arrangement work. Therefore, the workability during wiring and maintenance is good.

[0050] As described above, by removing the cover member 18, the socket 16 of the drive unit 14 is exposed to the outside through the opening 43 of the concealing member 40. This makes it easy to insert and remove the wiring connector, improving the workability during wiring and maintenance.

[0051] Both the control unit 20 and the power tap 24 are disposed in an open space S formed behind the concealing member 40. The power wiring 20c extending from the control unit 20 is connected to the power tap 24. Since the power tap 24 is disposed behind the control unit 20, wiring work for supplying power to the control unit 20 is easy. The power wiring 20c of the control unit 20 may be connected to a commercial power source other than the power tap 24. It is also possible to connect a power wiring extending from an electronic device such as a personal computer used by a user in his / her office work to the power tap 24, and supply power from the power tap 24 to the electronic device. The control unit 20 is disposed between the concealing member 40 and the power tap 24 in the front-rear direction. Therefore, it is possible to reduce the possibility that a user will unintentionally touch the control unit 20 and accidentally disconnect the wiring connection of the control unit 20.

[0052] When a user operates the operation switch 22, the operation switch 22 transmits an operation signal corresponding to the operation content to the control unit 20. The control unit 20 transmits a drive signal (electrical signal) corresponding to the operation signal to the drive unit 14. The drive unit 14 extends and retracts the extension / contraction section 12 in response to the drive signal. As a result, the tabletop 2 moves up and down according to the operation of the user.

[0053] As described above in detail, the desk 1 with a height-adjustable top plate of the embodiment includes the top plate 2, a pair of legs 15, a drive unit 14, a control unit 20 or a power tap 24, and a concealing member 40. The pair of legs 15 supports the top plate 2. The drive unit 14 is included in the pair of legs 15 and raises and lowers the top plate 2 in the vertical direction. The control unit 20 transmits an electric signal to the drive unit 14 to control the raising and lowering operation of the top plate 2. The power tap 24 is capable of supplying power. The concealing member 40 is disposed below the top plate 2 and blocks the view from the front. The control unit 20 or the power tap 24 is disposed in an open space S formed behind the concealing member 40. The open space S is open to the rear and downward.

[0054] As a result, when wiring or maintaining the control unit 20 or the power tap 24, work can be performed from behind or below the control unit 20 or the power tap 24 without removing the control unit 20 or the power tap 24 from the lift-top desk 1. This improves workability during wiring and maintenance. Also, since the concealing member 40 is disposed in front of the control unit 20 or the power tap 24, the control unit 20 or the power tap 24 is less visible from the front, improving appearance.

[0055] Although one embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like that do not deviate from the gist of the present invention are also included. [Explanation of symbols]

[0056] S...Open space 1. Height-adjustable desk (height-adjustable display unit) 2…Tabletop 14…Drive unit 14c…Wiring 15...Leg body 16…Outlet 18…Cover member 20…Control unit 24…Power strip 25…Communication equipment 40...Concealment material 42…Interior space 43...Open part

Claims

1. The top plate and A pair of legs supporting the tabletop; A drive unit included in the pair of legs for raising and lowering the tabletop in the up and down direction; A control unit that transmits an electric signal to the drive unit to control the lifting and lowering operation of the tabletop, or a power tap that can supply power; A concealing member is disposed below the top plate and blocks visibility from the front, the control unit or the power tap is disposed in an open space formed behind the concealing member, The open space is open to the rear and downward. Display rack with liftable top.

2. A lower end of the concealing member is disposed below a lower end of the control unit or the power strip. A liftable display fixture as described in claim 1.

3. The concealing member connects the pair of legs. A display unit with a liftable top as described in claim 1 or 2.

4. A lower end of the concealing member is disposed below a lower end of the drive unit. A display unit with a liftable top as described in claim 1 or 2.

5. the concealing member has an internal space through which a wire electrically connecting the control unit and the drive unit can be inserted, A display unit with a liftable top as described in claim 1 or 2.

6. The concealing member has an opening that communicates the internal space with the external space. A liftable display fixture as described in claim 5.

7. the drive unit has an outlet into which the wiring is inserted, The insertion port is exposed to the outside of the concealing member. A liftable display fixture as described in claim 5.

8. A removable cover member that conceals the drive unit is provided. A display unit with a liftable top as described in claim 1 or 2.

9. Both the control unit and the power tap are disposed in the open space formed behind the concealing member, The control unit is disposed between the concealing member and the power tap in the front-rear direction. A display unit with a liftable top as described in claim 1 or 2.

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