Fixture with elevating top board

Abstract

To provide furniture with an elevating top board capable of suppressing interference between a movable-side covering member and a fixed-side covering member, which may otherwise obstruct the elevating motion of the movable-side covering member or cause abnormal noises.SOLUTION: Furniture with an elevating top board comprises: an elevating device 10, a top board, a fixed-side covering member, and a movable-side covering member. The elevating device 10 includes fixed legs 11 and movable legs 12. The top board is connected to the movable legs 12. The fixed-side covering member has a lower end grounded, and covers both the outer and inner sides of the elevating device 10. The movable-side covering member moves up and down together with the top board, and covers both the outer and inner sides of the elevating device 10. The side surfaces of the movable-side and fixed-side covering members face each other so as to be relatively movable in the vertical direction. Between the mutually opposing side surfaces of the movable-side and fixed-side covering members, a buffer member is disposed that is compressibly deformable in a direction that narrows the gap between the side surfaces.SELECTED DRAWING: Figure 7

Description

[Technical field]

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

[0002] As a fixture with a top plate such as a desk device, a fixture with a liftable top plate that has a top plate that can be raised and lowered is known. In the fixture with a liftable top plate, the top plate is supported by a lifting device so that it can be raised and lowered. The lifting device has fixed legs that are grounded on the floor surface and movable legs that are held by the fixed legs so that they can be raised and lowered, and the top plate is fixed to the upper part of the movable legs.

[0003] A known example of this type of fixture with a liftable top is one in which a pair of lifting devices which also serve as the legs of the fixture are provided on both sides of the width of the top, and the periphery of each lifting device is covered by a fixed side shielding member and a movable side shielding member (see, for example, Patent Document 1).

[0004] In the furniture with a liftable top described in Patent Document 1, the lower end of the fixed shielding member is grounded on the floor surface, and the upper part of the movable shielding member is connected to the lower surface of the top plate. The movable shielding member is fitted into the fixed shielding member so that it can be raised and lowered in the vertical direction. A gap is provided between the opposing side surfaces of the fixed shielding member and the movable shielding member to allow relative movement of the two members in the vertical direction. In this furniture with a liftable top, the movable shielding member rises and falls in conjunction with the movement of the movable legs of the lifting device, so that the lifting device can always be covered and hidden from the outside regardless of the height adjustment of the top. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 7064341 Summary of the Invention [Problem to be solved by the invention]

[0006] In the above-mentioned furniture with a liftable top, the size and shape of the shielding members (fixed-side shielding member and movable-side shielding member) that surround the lifting device are determined based on requirements for functionality and design. However, as the movable-side shielding member becomes larger, the amount of vibration of the peripheral wall of the movable-side shielding member that accompanies the lifting and lowering of the top is likely to increase. Furthermore, as the amount of vibration of the peripheral wall of the movable-side shielding member increases, physical interference between the movable-side shielding member and the fixed-side shielding member can easily hinder the smooth lifting and lowering action of the movable-side shielding member or cause abnormal noise. For this reason, improvements in these areas are currently desired.

[0007] Therefore, the present invention aims to provide a display unit with a liftable top that can suppress the interference with the lifting and lowering operation of the movable shielding member and the generation of abnormal noise due to physical interference between the movable shielding member and the fixed shielding member. [Means for solving the problem]

[0008] In order to solve the above problems, the fixture with a liftable top according to the present invention employs the following configuration. In other words, the fixture with a liftable top of the present invention comprises a lifting device having fixed legs whose lower ends are grounded and movable legs that rise and fall relative to the fixed legs, a top connected to the movable legs, a fixed side shielding member whose lower end is grounded and which shields the outside and inside of the lifting device when the side of the top that is away from the center of the top in the width direction is the outside and the side close to the center of the top is the inside, and a movable side shielding member that rises and falls together with the top and shields the outside and inside of the lifting device, wherein the movable side shielding member and the fixed side shielding member are arranged with their sides facing each other so that they can move relative to each other in the vertical direction, and a cushioning member is arranged between the opposing side faces of the movable side shielding member and the fixed side shielding member which can be compressed and deformed in a direction narrowing the gap between the sides.

[0009] In this type of furniture with a liftable top, when the gap between the side surfaces of the movable shielding member and the fixed shielding member narrows, the cushioning member disposed in the gap is compressed and deformed, causing the sides to no longer come into direct contact with each other. Also, even if the movable shielding member moves forcefully in a direction that brings the sides closer to each other, the cushioning member can cushion the sudden movement of the movable shielding member. Therefore, the interference member can also suppress the vibration of the movable shielding member.

[0010] The movable shielding member and the fixed shielding member may be formed to have a flat horizontal cross-sectional shape that extends elongatedly in a vertical direction and a direction intersecting the width direction.

[0011] In this case, when the widthwise thickness of the movable-side shielding member and the fixed-side shielding member is reduced, the wide space below the widthwise end of the tabletop can be shielded by the movable-side shielding member and the fixed-side shielding member. Therefore, when this configuration is adopted, it is possible to shield the widthwise end below of the tabletop from the outside without deteriorating the external appearance.

[0012] The cushioning member may be arranged to face the outward surface in the width direction of the shielding member that is located on the inner periphery of the movable side shielding member and the fixed side shielding member, and the inward surface in the width direction of the shielding member.

[0013] In this case, regardless of whether the movable shielding member moves in the outward or inward direction in the width direction, the buffer member can regulate direct contact between the side surfaces and also suppress vibration of the movable shielding member.

[0014] The buffer members may be attached to one and the other of the side surfaces facing each other, and the buffer members attached to each of the side surfaces may be arranged at positions that do not overlap each other in the vertical direction.

[0015] In this case, since the cushioning members are attached to the opposing side surfaces so as not to overlap each other in the vertical direction, it is possible to reduce the amount of cushioning member used and arrange the cushioning members at multiple spaced apart locations on the opposing side surfaces, thereby obtaining a stable vibration suppression effect using the multiple cushioning members. This makes it possible to stably suppress contact between the opposing side surfaces and vibration of the movable shielding member while suppressing a rise in costs due to an increase in the amount of cushioning member used. In addition, because the cushioning members attached to each side surface are positioned so as not to overlap each other in the up-down direction, the movable-side shielding member and the fixed-side shielding member can be easily fitted together with the cushioning members attached to each of the movable-side shielding member and the fixed-side shielding member. Therefore, when this configuration is adopted, the workability of assembling the movable-side shielding member and the fixed-side shielding member can be improved.

[0016] It is desirable that the buffer members be attached to a lower region below the vertical center position of the side surface of the movable shielding member, and to an upper region above the vertical center position of the side surface of the fixed shielding member.

[0017] In this case, the buffer members are attached to the lower region of the side surface of the movable shielding member and the upper region of the side surface of the fixed shielding member. Therefore, not only when the movable shielding member is lowered to its fullest extent, but also when the movable shielding member is raised above its fullest lowered position, the multiple buffer members can be spaced apart in the vertical direction to contact the mating side surface. Therefore, when this configuration is adopted, a stable buffer effect can be obtained by the multiple buffer members spaced apart vertically.

[0018] The movable side shielding member and the fixed side shielding member may have inclined wall portions that incline so that the separation width between the opposing peripheral walls narrows toward the ends in the vertical direction and in the direction intersecting the width direction, and the buffer member may be positioned between the opposing side surfaces of the inclined wall portions of the movable side shielding member and the fixed side shielding member.

[0019] In this case, a cushioning member is disposed between the side surfaces of the inclined wall portions of the movable side shielding member and the fixed side shielding member, making it possible to suppress not only the displacement and impact of the movable side shielding member in the width direction, but also the displacement and impact in the direction intersecting thereto. Effect of the Invention

[0020] The display unit with a liftable top according to the present invention can prevent contact between the sides of the movable shielding member and the fixed shielding member by the cushioning member. Therefore, when the display unit with a liftable top according to the present invention is used, it is possible to prevent the movable shielding member from being disturbed in lifting and lowering and to prevent abnormal noise caused by physical interference between the movable shielding member and the fixed shielding member. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a perspective view of a fixture with a liftable top according to an embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of a display unit with a liftable top according to an embodiment. [Diagram 3] FIG. [Figure 4] FIG. 4 is another perspective view of the leg unit according to the embodiment. [Diagram 5] 5 is a cross-sectional view of the leg unit according to the embodiment, corresponding to the VV cross section of FIG. 4. [Figure 6] FIG. [Figure 7] FIG. 4 is another exploded perspective view of the leg unit according to the embodiment. [Figure 8] FIG. 4 is a perspective view of a portion of the leg unit according to the embodiment. [Figure 9] An enlarged view of part IX in Figure 2. [Figure 10] FIG. 4 is an exploded perspective view of a connection portion between a leg unit and a beam member according to an embodiment. [Figure 11] FIG. 2 is an exploded perspective view of a portion of the lifting device according to the embodiment. [Figure 12] 10 is a cross-sectional view of the furniture with a liftable top according to the embodiment, taken along line XII-XII in FIG. 9 . [Figure 13]10 is a cross-sectional view of the furniture with a liftable top according to the embodiment, taken along line XIII-XIII in FIG. 9 . [Figure 14] 10 is a cross-sectional view of the furniture with a liftable top according to the embodiment, taken along line XIV-XIV in FIG. 9 . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0023] FIG. 1 is a perspective view of a furniture unit 1 with a liftable top according to this embodiment, and FIG. 2 is an exploded perspective view of the furniture unit 1 with a liftable top. The furniture 1 with a liftable top comprises a pair of leg units 2 and a top 3 supported by the leg units 2. Each leg unit 2 is equipped with a lifting device 10 (see Figs. 7 and 8) described below for raising and lowering the top 3. The top 3 is formed in a generally rectangular shape that is long in one direction when viewed from above. The pair of leg units 2 are connected to the undersides of both ends of the top 3 in the direction in which it extends long. For ease of explanation, the direction in which the tabletop 3 extends along its length will be referred to as the "width direction," and the direction perpendicular to the vertical and width directions will be referred to as the "front-rear direction." Additionally, the "outside" in the width direction means the side away from the center of the tabletop 3, and the "inside" in the width direction means the side close to the center of the tabletop 3. Arrow Y pointing to the width direction, arrow X pointing to the front-rear direction, and arrow Z pointing to the vertical direction are indicated in appropriate positions in the drawings.

[0024] As shown in Fig. 2, the upper ends of the pair of leg units 2 are connected to each other by a pair of beam members 4 having a rectangular cylindrical shape extending along the width direction. The pair of beam members 4 are arranged parallel to each other and spaced apart in the front-rear direction in the central area of ​​the tabletop 3 in the front-rear direction. The pair of beam members 4 are fixed to the underside of the tabletop 3 and support the tabletop 3 from below together with the pair of leg units 2.

[0025] Additionally, fixed to the underside of the tabletop 3 at a position rearward of the beam member 4 are a front panel 5 for hiding the space below the tabletop 3 from the rear, and a pair of support plates 6 having a generally L-shaped cross section. A control unit 7 for raising and lowering the lifting device 10 in the leg unit 2, a power tap 8, and the like can be installed on each support plate 6. Reference numeral 9 in FIG. 2 denotes an operating device for controlling the height of the tabletop 3 through the control unit 7.

[0026] Fig. 3 is a perspective view of the leg unit 2 as viewed from the upper inside in the width direction, and Fig. 4 is a perspective view of the leg unit 2 as viewed from the upper outside in the width direction. Fig. 5 is a cross-sectional view of the leg unit 2 corresponding to the VV cross section of Fig. 4, and Figs. 6 and 7 are exploded perspective views of the leg unit 2. Also, Fig. 8 is a perspective view of the leg unit 2 with some parts removed. The left and right leg units 2 have the same structure. As shown in Figs. 7 and 8, the leg unit 2 includes a lifting device 10 that also serves as a leg body that supports the load of the tabletop 3. The lifting device 10 includes a fixed leg 11 whose lower end is grounded, a movable leg 12 that is held on the fixed leg 11 so that it can be raised and lowered, and an actuator (not shown) that raises and lowers the movable leg 12 relative to the fixed leg 11. In this embodiment, the actuator is configured by an electric motor. However, the actuator is not limited to an electric motor. The actuator may be, for example, a hydraulically driven type.

[0027] 8, the fixed leg 11 is formed in a square tube shape, and its lower end is fixed to a bottom wall plate 14 via an installation bracket 13. A plurality of grounding members 15 are attached to the lower surface of the bottom wall plate 14. The fixed leg 11 and the bottom wall plate 14 are grounded to the floor surface F of the facility via the grounding members 15.

[0028] The movable leg 12 includes a movable leg body 16 held by the fixed leg 11 so as to be movable up and down, and a fixed block 18 (fixed bracket) connected to the upper part of the movable leg body 16. The movable leg body 16 includes a columnar part 16A held by the fixed leg 11 and protruding upward from the fixed leg 11, and a flat rectangular inward arm part 16B extending inward in the width direction from the upper end of the columnar part 16A. A connector is provided on the end face of the inward arm part 16B in the extending direction for connecting wiring such as power lines and signal lines to the lifting actuator. The fixed block 18 is fixed integrally to the inward arm part 16B of the movable leg 12. In addition, the ends of the pair of beam members 4 and the upper part of a movable side shielding tube 19 (shielding member) described later can be connected to the fixed block 18. Furthermore, the lower surface of the top plate 3 is butted against the upper surface of the fixed block 18, and the top plate 3 is fixed in this state.

[0029] The leg unit 2 further includes a fixed-side shielding cylinder 20 (fixed-side shielding member) and a movable-side shielding cylinder 19 (movable-side shielding member) that cover the outer periphery of each lifting device 10. The lower end of the fixed-side shielding cylinder 20 is connected to the bottom wall plate 14 and is grounded on the floor surface F via a grounding member 15 on the lower surface of the bottom wall plate 14. The upper end of the movable-side shielding cylinder 19 is connected to the upper part (fixed block 18) of the movable leg 12 of the lifting device 10 and moves up and down together with the tabletop 3 connected to the fixed block 18 of the movable leg 12. The movable-side shielding cylinder 19 has a peripheral wall shape that is one size larger than the fixed-side shielding cylinder 20 and is fitted into the outer periphery of the fixed-side shielding cylinder 20 so as to be relatively movable in the vertical direction.

[0030] The fixed-side shielding cylinder 20 has an outer shielding wall 21 that shields the outer side of the fixed leg 11 and the movable leg body 16 of the lifting device 10 in the width direction, and an inner shielding wall 22 that shields the inner side of the fixed leg 11 and the movable leg body 16 in the width direction. The outer shielding wall 21 and the inner shielding wall 22 extend in the up-down direction and the front-rear direction, and the front edges are connected to each other, and the rear edges are also connected to each other. As a result, a long space in the front-rear direction is formed between the outer shielding wall 21 and the inner shielding wall 22. The outer shielding wall 21 is formed in a rectangular flat plate shape. In contrast, the inner shielding wall 22 has a central wall portion 22a that is arranged in the central region in the front-rear direction and faces the outer shielding wall 21 in parallel, and an inclined wall portion 22b that extends inclined outward in the width direction from the front edge and the rear edge of the central wall portion 22a, respectively. The extending ends of each inclined wall portion 22b are connected to the front edge portion and the rear edge portion of the outer shielding wall 21. The inclined wall portion 22b on the front-rear direction is inclined so that the space between it and the outer shielding wall 21 tapers forward. The inclined wall portion 22b on the rear side in the front-rear direction is inclined so that the space between it and the outer shielding wall 21 tapers backward. In this embodiment, the central wall portion 22a is detachable from the front and rear inclined wall portions 22b. In other words, by removing the central wall portion 22a, it is possible to access the inner space of the fixed side shielding cylinder 20. This makes it easy to perform maintenance of the lifting device 10.

[0031] 7 and 8, the upper end of the fixed-side shielding cylinder 20 is provided with a top wall 25 having an insertion hole 23 through which the fixed leg 11 of the lifting device 10 is inserted and a lightening hole 24. The top wall 25 is connected to or formed integrally with at least one of the outer shielding wall 21 and the inner shielding wall 22. The movable leg 12 of the lifting device 10 protrudes above the fixed-side shielding cylinder 20 through the insertion hole 23 together with the fixed leg 11.

[0032] The movable-side shielding cylinder 19 has an outer shielding wall 26 that shields the outer side in the width direction of the fixed leg 11 and the movable leg body 16 of the lifting device 10, and an inner shielding wall 27 that shields the inner side in the width direction of the fixed leg 11 and the movable leg body 16. The outer shielding wall 26 and the inner shielding wall 27 extend in the vertical and front-rear directions like the fixed-side shielding cylinder 20, and the front end edges are connected to each other, and the rear end edges are also connected to each other. Between the outer shielding wall 26 and the inner shielding wall 27, a storage space 28 that stores the fixed leg 11 and the movable leg body 16 is formed. The movable-side shielding cylinder 19 is displaced above the fixed leg 11 when the top board 3 is raised, but even at this time, the columnar portion 16A of the movable leg body 16 is positioned (stored) in the storage space 28.

[0033] The outer shielding wall 26 and the inner shielding wall 27 of the movable side shielding cylinder 19 are formed in substantially the same shape as the outer shielding wall 21 and the inner shielding wall 22 of the fixed side shielding cylinder 20 described above. That is, the outer shielding wall 26 is formed in a rectangular flat plate shape, and the inner shielding wall 27 has a central wall portion 27a and a pair of inclined wall portions 27b. However, the outer shielding wall 26 and the inner shielding wall 27 of the movable side shielding cylinder 19 are formed to be one size larger than the outer shielding wall 21 and the inner shielding wall 22 of the fixed side shielding cylinder 20. In addition, a rectangular opening 30 that opens upward is formed at the upper end of the central wall portion 27a of the inner shielding wall 27. The extending end side of the inward arm portion 16B of the movable leg body 16 is inserted into this opening 30.

[0034] 7, a top wall 29 that closes a portion of the upper part of the accommodation space 28 is provided at the upper end of the movable-side shielding cylinder 19. The top wall 29 is not provided in the central area in the front-rear direction above the accommodation space 28, but is provided at the front and rear of that central area. From an opening between the front and rear top walls 29, the upper surface of the base side of the inward arm portion 16B of the movable leg body 16 is exposed. The front and rear top walls 29 are connected to or integrally formed with at least one of the outer shielding wall 26 and the inner shielding wall 27.

[0035] Incidentally, as shown in Fig. 5, a minute gap d is provided between the opposing side surfaces 20s, 19s of the fixed-side shielding cylinder 20 and the movable-side shielding cylinder 19 to allow the movable-side shielding cylinder 19 to move in the vertical direction. A nonwoven fabric 31 capable of compressive deformation in the direction narrowing the gap d is disposed between these side surfaces 20s, 19s. The nonwoven fabric 31 is an example of a cushioning material capable of compressive deformation in the direction narrowing the gap d. Felt or other expandable sliding materials can also be used as a cushioning material capable of compressive deformation in the direction narrowing the gap d.

[0036] In the present embodiment, the nonwoven fabric 31, which is a cushioning member, is formed in a horizontally long rectangular shape as shown in Fig. 4 and Fig. 7. The nonwoven fabric 31 is bonded to the upper end area of ​​the outer side surface 20s of the outer shielding wall 21 and the inner shielding wall 22 of the fixed side shielding cylinder 20, and to the lower end area of ​​the inner side surface 19s of the outer shielding wall 26 and the inner shielding wall 27 of the movable side shielding cylinder 19. The arrangement of the nonwoven fabric 31 in the fixed side shielding cylinder 20 and the arrangement of the nonwoven fabric 31 in the movable side shielding cylinder 19 are not limited to this example. The arrangement of the nonwoven fabric 31 in the fixed side shielding cylinder 20 may be in an upper area above the vertical center position of the side surface 20s of the fixed side shielding cylinder 20, and the arrangement of the nonwoven fabric 31 in the movable side shielding cylinder 19 may be in a lower area below the vertical center position of the side surface 19s of the movable side shielding cylinder 19.

[0037] 4, the nonwoven fabric 31 attached to the outer side surface 20s of the outer shielding wall 21 of the fixed-side shielding cylinder 20 and the nonwoven fabric 31 attached to the inner side surface 19s of the outer shielding wall 26 of the movable-side shielding cylinder 19 are arranged in positions that do not overlap each other in the vertical direction. Similarly, as shown in Fig. 7, the nonwoven fabric 31 attached to the outer side surface 20s of the inner shielding wall 22 of the fixed-side shielding cylinder 20 and the nonwoven fabric 31 attached to the inner side surface 19s of the inner shielding wall 27 of the movable-side shielding cylinder 19 are arranged in positions that do not overlap each other in the vertical direction. In other words, all of the nonwoven fabrics 31 attached to the mutually opposing side surfaces 20s, 19s are arranged in positions that are shifted in the front-rear direction. In this embodiment, a portion of the nonwoven fabric 31 is attached to the opposing side surfaces 20s, 19s of the inclined wall portions 22b, 27b of the inner shielding walls 22, 27. The nonwoven fabric 31 attached to the side surfaces 20s, 19s of the inclined wall portions 22b, 27b is also shifted forward and backward so as not to overlap in the vertical direction.

[0038] Fig. 9 is an enlarged view of part IX in Fig. 2, and Fig. 10 is an exploded perspective view of a connection portion between the leg unit 2 and the beam member 4. Fig. 11 is an exploded perspective view of a connection portion between the movable leg body 16 and the fixed block 18 of the lifting device 10. Fig. 12 is a cross-sectional view corresponding to the XII-XII cross section in Fig. 9, Fig. 13 is a cross-sectional view corresponding to the XIII-XIII cross section in Fig. 9, and Fig. 14 is a cross-sectional view corresponding to the XIV-XIV cross section in Fig. 9. The fixed block 18 of the movable leg 12 comprises a square cylindrical base tube 32 into which the inward arm portion 16B of the movable leg body 16 is fitted, and a pair of square cylindrical beam connecting portions 33 fixed to each of the outer side surfaces of the base tube 32 in the fore-and-aft direction.

[0039] The base cylinder 32 has a horizontally extending top wall 32t, left and right side walls 32s, and a bottom wall 32b extending horizontally parallel to the top wall 32t. The top wall 32t, the side walls 32s, and the bottom wall 32b form a square tube shape of the base cylinder 32 that opens to the outside and inside in the width direction (Y direction). The inward arm portion 16B of the movable leg body 16 is fitted into the base cylinder 32 through an opening 35 (see FIG. 11) facing outward in the width direction. In this state, the inward arm portion 16B is fixed integrally to the base cylinder 32 by bolting or the like. In this embodiment, the base cylinder 32 constitutes a cylindrical portion into which the inward arm portion 16B is fitted and fixed.

[0040] 11, the front and rear side walls 32s of the base cylinder 32 extend outward in the width direction (Y direction) further than the bottom wall 32b. A top horizontal wall 34, which will be described later, is fixed to the upper surface of the top wall 32t by welding. The base side of the inward arm portion 16B (the area directly above the columnar portion 16A) is accommodated and positioned in the space surrounded by the top wall 32t and the front and rear side walls 32s.

[0041] The beam connecting portion 33 is formed of a square tube-shaped member whose outer surface shape is one size smaller than the beam member 4. One side of the beam connecting portion 33 is fixed to the outer surface (surface facing the front-rear direction) of the side wall 32s of the base tube 32 by welding. The beam connecting portion 33 is fixed to the base tube 32 so that its extension direction is along the width direction (Y direction). Only the central region in the up-down direction of the side of the beam connecting portion 33 facing the outer surface of the base tube 32 is welded to the outer surface of the base tube 32. A gap is provided between the outer surface of the base tube 32 and the side of the beam connecting portion 33 so as to be located above and below the welded portion between the two.

[0042] On the other hand, at the end of the beam member 4, at a position facing the outer surface of the side wall 32s of the base tube 32, a notch 40 of a substantially constant width that opens toward the outside in the width direction (Y direction) is formed as shown in Figs. 10, 13, and 14. This notch 40 is for preventing the beam member 4 from interfering with the welded portion between the base tube 32 and the beam connecting portion 33 when the end of the beam member 4 is fitted to the outer peripheral surface of the beam connecting portion 33 along the width direction (Y direction). The beam member 4 is fitted to the outer surface of the beam connecting portion 33 in an area other than the welded portion between the base tube 32 and the beam connecting portion 33. Almost the entire outer surface of the beam connecting portion 33 except for the welded portion with the base tube 32 becomes the fitting allowance 70 into which the end of the beam member 4 is fitted. Also, the edge of the notch 40 of the beam member 4 is inserted into the gap between the base tube 32 and the beam connecting portion 33 above and below the welded portion.

[0043] The top horizontal wall 34 fixed to the upper surface of the top wall 32t of the base tube 32 is formed in a generally rectangular shape that is long in the front-rear direction. The top horizontal wall 34 extends a predetermined length to the front and rear sides from a central region fixed to the upper surface of the top wall 32t of the base tube 32. Here, if the portions extending to the front and rear sides from the central region are referred to as extension pieces 34e, each part of these extension pieces 34e is overlapped with the upper surface of the top wall 29 of the movable-side shielding tube 19.

[0044] Specifically, as shown in Fig. 9, the area of ​​each extension piece 34e, except for the vicinity of the corner near the inner side in the width direction (Y direction), on the extension end side (front-rear direction end side) is overlapped with the upper surface of the corresponding top wall 29 on the front and rear of the movable side shielding tube 19. The area of ​​each extension piece 34e overlapped with the upper surface of the top wall 29 is a shielding connection part 55 connected to each top wall 29 of the movable side shielding tube 19 (shielding member) by a plurality of screws 50. The screws 50 are fastened from the upper side of the shielding connection part 55 to fasten and fix the shielding connection part 55 to the top wall 29. At this time, the front and rear shielding connection parts 55 of the top horizontal wall 34 are connected to the movable side shielding tube 19 at a position overlapping the movable leg body 16 (columnar part 16A and inward arm part 16B) of the lifting device 10 in the width direction (Y direction). In this embodiment, the screw 50 constitutes the first fastening member. In addition, the head of the screw 50 fastened from above into the shielding connecting portion 55 is covered on the upper side by the top plate 3 when the fixing block 18 is connected to the lower surface of the top plate 3.

[0045] The vicinity of the corner of each extension piece 34e on the inner side in the width direction (Y direction) of the extension end side constitutes a top plate connecting portion 56 that is overlapped with the underside of the top plate 3 and connected to the top plate 3 by screws 51. These corners that constitute the top plate connecting portion 56 are located outside the side wall (inclined wall portion 27b) of the movable-side shielding cylinder 19 in top view. The screws 51 are fastened from below the top plate connecting portion 56, thereby fastening and fixing the top plate connecting portion 56 to the underside of the top plate 3. In this embodiment, the screw 51 constitutes a second fastening member. The top horizontal wall 34 constitutes a flat plate portion on which the top plate connecting portion 56 and the shielding connecting portion 55 are provided.

[0046] In addition, a first vertical wall 38A (vertical wall) is bent downward at a substantially right angle to the inner end of one of the extension pieces 34e of the top horizontal wall 34 in the width direction (Y direction). Similarly, a second vertical wall 38B (vertical wall) is bent downward at a substantially right angle to the inner end of the other extension piece 34e in the width direction (Y direction). The base ends of the first vertical wall 38A and the second vertical wall 38B on the center side in the front-rear direction are abutted against the outer surfaces of the front and rear side walls 32s of the base tube 32. The base ends of the first vertical wall 38A and the second vertical wall 38B are fixed by welding to the abutted side walls 32s.

[0047] The end faces of the beam connecting parts 33 mentioned above are abutted against the inner side faces in the width direction (Y direction) of the first vertical wall 38A and the second vertical wall 38B. The end faces of the beam connecting parts 33 are fixed to the side faces of the corresponding vertical walls (first vertical wall 38A, second vertical wall 38B) by welding. Therefore, the pair of beam connecting parts 33 are fixed to the base tube 32 at both front and rear positions of the base tube 32 (cylindrical part), and each end face is also fixed to the vertical walls (first vertical wall 38A, second vertical wall 38B).

[0048] In this embodiment, the first vertical wall 38A and the second vertical wall 38B, which are arranged spaced apart in the front and rear with the base tube 32 (cylindrical part) in between, are integrally connected to a top horizontal wall 34 that extends across the upper surface of the base tube 32 (cylindrical part) in the front-rear direction. The central area in the front-rear direction of the top horizontal wall 34 is welded and fixed to the upper part of the base tube 32 (outer extension part 32se). Therefore, the beam connecting part 33 to which each end of the pair of beam members 4 is connected is supported by the strong structural body of the fixed block 18.

[0049] The procedure for assembling the furniture with a liftable top 1 of this embodiment will be described below. Each leg unit 2 is assembled in advance. When assembling the leg unit 2, as shown in Fig. 7, the movable-side shielding cylinder 19 is fitted into the fixed-side shielding cylinder 20 from above, and in this state, the lifting device 10 is set inside from above the movable-side shielding cylinder 19. At this time, the lower end of the fixed leg 11 of the lifting device 10 is fixed to the upper surface of the bottom wall plate 14. Also, a part of the inward arm portion 16B at the upper part of the movable leg 12 is exposed to the outside of the movable-side shielding cylinder 19.

[0050] Thereafter, the base tube 32 of the fixed block 18 is fitted to the extending end of the inward arm portion 16B, and in this state, the base tube 32 is fixed to the inward arm portion 16B by screwing or the like. Further thereafter, the front and rear extending pieces 34e of the top horizontal wall 34 of the fixed block 18 are overlapped with the corresponding top wall 29 of the movable-side shielding tube 19, and the shielding connecting parts 55 of each extending piece 34e are fastened and fixed to the top wall 29 from above by the screws 50, which are first fastening members.

[0051] Once each leg unit 2 is assembled in this manner, each end of the pair of beam members 4 is then connected to the fixed block 18 of each leg unit 2. At this time, the ends of the cylindrical beam members 4 are fitted into the corresponding beam connecting portions 33 of the fixed block 18, and then each beam member 4 is fixed to the beam connecting portions 33 by bolting.

[0052] When the pair of beam members 4 are connected to the fixed blocks 18 of each leg unit 2 in this manner, a component arrangement space 60 that opens downward is formed between the pair of beam members 4, as shown in Fig. 6. In this manner, in the component arrangement space 60 formed between the pair of beam members 4, it becomes possible to arrange, for example, wiring for connecting the actuators in each lifting device 10 to the control unit 7 and a power source.

[0053] Thereafter, the tabletop 3 is placed on the upper surfaces of the pair of leg units 2 and the beam members 4, and these are fastened and fixed to the underside of the tabletop 3 by a plurality of screws 51, 52. When fastening and fixing the leg units 2 to the underside of the tabletop, the tabletop 3 is placed on the upper surface of the top horizontal wall 34 (flat portion) of the fixed block 18, and the tabletop connecting portion 56 of the top horizontal wall 34 (flat portion) is fastened and fixed from below by the screws 51, which are the second fastening members. At this time, the tabletop connecting portion 56 is disposed at a position protruding outward from the inner shielding wall 27 of the movable-side shielding cylinder 19, as shown in FIG. 9. Therefore, the work of fastening the screws 51 to the tabletop 3 can be performed relatively easily.

[0054] 2 are then fastened to the underside of the tabletop 3. However, the tabletop 5, support plate 6, etc. may be temporarily assembled to the pair of leg units 2 in advance, and then fastened to the underside of the tabletop 3 together with the leg units 2 and the beam members 4.

[0055] <Effects of the embodiment> As described above, in the furniture with a liftable top plate 1 of this embodiment, the nonwoven fabric 31 (buffer material) is arranged between the movable side shielding tube 19 (movable side shielding member) and the fixed side shielding tube 20 (fixed side shielding member) that cover the outside of the lifting device 10. The nonwoven fabric 31 is compressively deformable in a direction that narrows the gap d between the opposing side surfaces 19s, 20s of the movable side shielding tube 19 and the fixed side shielding tube 20. Therefore, when the gap d between the side surfaces 19s, 20s of the movable side shielding tube 19 and the fixed side shielding tube 20 narrows, the nonwoven fabric 31 arranged in the gap d is compressed and deformed, thereby preventing the side surfaces 19s, 20s from directly contacting each other. In addition, even if the movable side shielding tube 19 moves vigorously in a direction in which the side surfaces 19s, 20s approach each other, the sudden movement of the movable side shielding tube 19 can be mitigated by the deformation of the nonwoven fabric 31. Therefore, when the fixture 1 with a liftable top of this embodiment is adopted, it is possible to suppress the interference with the lifting and lowering operation of the movable side shielding tube 19 and the generation of abnormal noise due to physical interference between the movable side shielding tube 19 and the fixed side shielding tube 20.

[0056] Furthermore, in the furniture 1 with a liftable top plate of this embodiment, the movable-side shielding cylinder 19 and the fixed-side shielding cylinder 20 have a flat horizontal cross-sectional shape that extends long in the front-to-rear direction (X direction). Therefore, when the thickness of the movable-side shielding cylinder 19 and the fixed-side shielding cylinder 20 in the width direction (Y direction) is reduced, the wide space below the end of the top plate 3 in the width direction can be shielded by the movable-side shielding cylinder 19 and the fixed-side shielding cylinder 20. Therefore, when this configuration is adopted, the lower end of the width direction of the top plate 3 can be shielded from the outside by the movable side shielding tube 19 and the fixed side shielding tube 20 without deteriorating the external appearance, and furthermore, physical interference between the movable side shielding tube 19 and the fixed side shielding tube 20 can be suppressed by the nonwoven fabric 31.

[0057] Furthermore, in the furniture with a liftable top 1 of this embodiment, nonwoven fabric 31, which is a cushioning member, is disposed between the outer shielding walls 21, 26 and between the inner shielding walls 22, 27 of the fixed-side shielding cylinder 20 and the movable-side shielding cylinder 19. In other words, the nonwoven fabric 31 is disposed facing the surface facing outward in the width direction (Y direction) and the surface facing inward in the width direction (Y direction) of the shielding member (fixed-side shielding cylinder 20) located on the inner periphery. Therefore, when this configuration is adopted, regardless of whether the movable side shielding tube 19 moves in the outward or inward direction in the width direction, the nonwoven fabric 31, which acts as a cushioning member, can prevent direct contact between the side surfaces and also suppress the vibration of the movable side shielding tube 19.

[0058] Furthermore, in the furniture with a liftable top 1 of this embodiment, nonwoven fabric 31, which is a cushioning material, is attached to one and the other of the opposing side surfaces 20s, 19s of the fixed-side shielding tube 20 and the movable-side shielding tube 19. The nonwoven fabrics 31 attached to each side surface 20s, 19s are arranged offset in the front-rear direction so as not to overlap each other in the up-down direction. Therefore, while suppressing the amount of nonwoven fabric 31 used (while reducing the volume), the nonwoven fabrics 31 are arranged in multiple spaced apart locations on the opposing side surfaces 20s, 19s, and a stable vibration suppression effect can be obtained by the multiple nonwoven fabrics 31. Therefore, when this configuration is adopted, it is possible to stably suppress contact between the opposing side surfaces 20s, 19s and vibration of the movable shielding tube 19 while suppressing increases in costs due to an increase in the amount of nonwoven fabric 31 used.

[0059] Furthermore, in the furniture unit 1 with a liftable top of this configuration, the nonwoven fabrics 31 attached to the respective side surfaces 20s, 19s are positioned so that they do not overlap each other in the vertical direction, so that the movable-side shielding tube 19 and the fixed-side shielding tube 20 can be easily fitted together. In other words, when the movable-side shielding tube 19 and the fixed-side shielding tube 20 are fitted together with the nonwoven fabrics 31 attached to them, respectively, the two can be easily fitted together without having to worry about the nonwoven fabrics 31 interfering with each other. Therefore, when this configuration is adopted, the workability of assembling the movable side shielding cylinder 19 and the fixed side shielding cylinder 20 can be improved.

[0060] Furthermore, in the furniture 1 with a liftable top of this configuration, the nonwoven fabric 31, which is a cushioning material, is attached near the lower end (lower region) of the side surface 19a of the movable-side shielding cylinder 19 and near the upper end (upper region) of the side surface 20a of the fixed-side shielding cylinder 20. Therefore, not only when the movable-side shielding cylinder 19 is lowered to the maximum, but also when the movable-side shielding cylinder 19 is raised above the maximum lowered position, the multiple nonwoven fabrics 31 can be sufficiently spaced apart in the vertical direction to come into contact with the opposing side surface. Therefore, when this configuration is adopted, a stable cushioning effect can be obtained by the multiple nonwoven fabrics 31 arranged vertically and spaced apart from each other.

[0061] Furthermore, in the furniture with a liftable top 1 of this configuration, the movable side shielding tube 19 and the fixed side shielding tube 20 are provided with inclined wall portions 27b, 22b, respectively. Each inclined wall portion 27b, 22b is inclined so that the separation width of the peripheral wall of each shielding tube narrows toward the end in the front-rear direction. The nonwoven fabric 31 is disposed between the opposing side surfaces 19s, 20s of the inclined wall portions 27b, 22b of the movable side shielding tube 19 and the fixed side shielding tube 20. Therefore, the nonwoven fabric 31 can suppress not only the displacement and impact of the movable side shielding tube in the width direction, but also the displacement and impact in the front-rear direction.

[0062] The present invention is not limited to the above embodiment, and various design modifications are possible without departing from the spirit of the present invention. For example, in the above embodiment, the movable shielding cylinder 19 is arranged so as to be movable up and down on the outside (outer circumference side) of the fixed shielding cylinder 20, but conversely, the movable shielding cylinder 19 may be arranged so as to be movable up and down on the inside (inner circumference side) of the fixed shielding cylinder 20.

[0063] In the above embodiment, the movable side shielding cylinder 19 and the fixed side shielding cylinder 20 have a flat horizontal cross-sectional shape that extends long in the front-rear direction. However, the shapes of the movable side shielding cylinder 19 and the fixed side shielding cylinder 20 are not limited to this shape, and various other shapes can be adopted.

[0064] In the above embodiment, the fixed-side shielding member and the movable-side shielding member are formed of the fixed-side shielding cylinder 20 and the movable-side shielding cylinder 19, which are closed almost entirely in the circumferential direction, but the shapes of the fixed-side shielding member and the movable-side shielding member are not limited to this. The fixed-side shielding member and the movable-side shielding member do not have to be cylindrical as long as they have portions that shield the outside and inside of the lifting device 10 in the width direction. [Explanation of symbols]

[0065] 1. Furniture with a liftable top 3…Tabletop 10...Lifting device 11…Fixed leg 12…Movable legs 19... Movable side shielding tube (movable side shielding member) 19s…side 20...Fixed side shielding tube (fixed side shielding member) 20s…side 22b…Slanted wall part 27b…Slanted wall part 31...Nonwoven fabric (buffer material) d…Gap

Claims

1. a lifting device having a fixed leg whose lower end is grounded and a movable leg that moves up and down relative to the fixed leg; A top plate connected to the movable legs; a fixed-side shielding member having a lower end grounded and shielding the outside and the inside of the lifting device when a side of the tabletop away from the center of the tabletop in the width direction is defined as an outside and a side of the tabletop close to the center is defined as an inside; a movable shielding member that moves up and down together with the top plate and shields the outside and the inside of the lifting device, the movable shielding member and the fixed shielding member are disposed with their sides facing each other so as to be relatively movable in the up-down direction; A display unit with a liftable top, characterized in that a cushioning member that can be compressed and deformed in a direction narrowing the gap between the opposing sides of the movable shielding member and the fixed shielding member is arranged between the opposing sides of the movable shielding member and the fixed shielding member.

2. The display unit with a liftable top as described in claim 1, characterized in that the movable side shielding member and the fixed side shielding member are formed into a flat horizontal cross-sectional shape that extends longitudinally in the vertical direction and in a direction intersecting the width direction.

3. The display fixture with a liftable top as described in claim 2, characterized in that the cushioning member is arranged facing the outward surface in the width direction of the shielding member located on the inner side of the movable side shielding member and the fixed side shielding member, and the inward surface in the width direction of the shielding member.

4. A display unit with a liftable top as described in claim 2 or 3, characterized in that the cushioning members are attached to one and the other of the opposing side surfaces, and the cushioning members attached to each side surface are positioned in positions that do not overlap each other in the vertical direction.

5. A display unit with a liftable top as described in claim 4, characterized in that the cushioning members are attached respectively to a lower region below the vertical center position of the side surface of the movable shielding member and an upper region above the vertical center position of the side surface of the fixed shielding member.

6. the movable-side shielding member and the fixed-side shielding member each have an inclined wall portion that is inclined such that a distance between opposing peripheral walls narrows toward an end portion in a vertical direction and a direction intersecting the width direction, The display unit with a liftable top as described in claim 2, characterized in that the buffer member is arranged between the opposing side surfaces of the inclined wall portions of the movable side shielding member and the fixed side shielding member.

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