Shielding member and furniture with top plate

Abstract

To provide a shielding member, when manufacturing, for example, furniture with a top plate, capable of reducing manufacturing cost and improving manufacturing efficiency, and furniture with a top plate.SOLUTION: A shielding member is attached to an opening of a tubular member extending in a first direction, the opening opened to at least a first side in the first direction, thereby closing the opening. The shielding member includes a base part for covering the opening, and an upright piece extending outward in the first direction from a peripheral edge of the base part. The base part includes a pull-out port penetrating the base part in the first direction and communicating a space surrounded by the base part and the upright piece with the inside of the tubular member.SELECTED DRAWING: Figure 13

Description

[Technical field]

[0001] The present invention relates to a shielding member and a fixture with a top plate. [Background technology]

[0002] There is known a furniture with a tabletop, which includes a pair of legs, a tabletop supported by the pair of legs, and casters that are attached to the legs and run on a floor surface. For example, the following Patent Document 1 discloses a configuration including an operation interlocking means that switches between a locked state in which the casters are locked and an unlocked state in which the casters are unlocked. The operation interlocking means includes a vertical interlocking shaft that extends vertically in the internal space of the legs. The operation interlocking means switches between the locked and unlocked states of the casters by moving the vertical interlocking shaft up and down in the internal space of the legs in response to the operation of an operating unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-063233 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional technology, since the upper end opening of the leg body is closed by a cap, in order to pull out the upper and lower interlocking shaft above the leg body, it is necessary to form an outlet on the outer surface of the leg body by post-processing. Since the leg body is generally made of a metal material, forming an outlet opening to the side may lead to an increase in manufacturing costs and a decrease in manufacturing efficiency.

[0005] The present invention provides a shielding member and a fixture with a tabletop that can reduce manufacturing costs and improve manufacturing efficiency, for example, when manufacturing a fixture with a tabletop. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention employs the following aspects. (1) A shielding member according to one embodiment of the present invention is a shielding member that is attached to an opening of a tubular member extending in a first direction, the opening being open to at least a first side in the first direction, thereby blocking the opening, and includes a base that covers the opening and an upright portion that extends from a peripheral edge of the base toward the outside in the first direction, and a draw-out opening is formed in the base that penetrates the base in the first direction and connects a space surrounded by the base and the upright portion to the inside of the tubular member.

[0007] According to this aspect, since the outlet is formed in the base, the member disposed inside the tubular member can be pulled outward in the first direction relative to the tubular member without performing post-processing such as forming an opening in the side surface of the tubular member. This makes it possible to reduce manufacturing costs and improve manufacturing efficiency when manufacturing fixtures equipped with tubular members. In addition, in the shielding member of this embodiment, the space surrounded by the base and the standing portion communicates with the inside of the tubular member through the drawing outlet. Therefore, it is possible for the standing portion to surround the periphery of the part (external mechanism) drawn out from the inside of the tubular member. This prevents the external mechanism from being exposed to the outside, improves the appearance, and prevents objects from coming into contact with the external mechanism.

[0008] (2) In the shielding member according to the above aspect (1), it is preferable that at least a portion of the upright portion is located outside the tubular member in a second direction intersecting the first direction. According to this aspect, the space surrounded by the standing portions can be expanded in the second direction compared to a configuration in which the standing portions are located on the outer surface of the tubular member or on the inside of the outer surface of the tubular member when viewed from the first direction, which improves the layout flexibility within the space surrounded by the standing pieces.

[0009] (3) In the shielding member relating to aspect (2) above, it is preferable that the standing portion has an outward extension portion that extends in a direction away from the base in the second direction as it moves away from the base in the first direction, and a linear extension portion that extends in the first direction from the outward extension portion. According to this aspect, the space surrounded by the standing portion gradually expands in the second direction as it moves away from the base in the first direction. In this case, compared to a configuration in which the peripheral portion of the base protrudes outward beyond the tubular member, for example, the step at the boundary between the tubular member and the shielding member can be reduced and the space surrounded by the standing portion can be expanded. This can improve the appearance of the fixture in which the shielding member is installed.

[0010] (4) In the shielding member according to any one of the above aspects (1) to (3), it is preferable that the base and the upright piece are integrally formed from a resin material. According to this aspect, the outlet can be formed at the same time as the shielding member is manufactured as a molded product of a resin material, which can reduce manufacturing costs and improve manufacturing efficiency.

[0011] (5) A fixture with a countertop according to one embodiment of the present invention comprises a support structure extending upward from a floor surface and a countertop supported by the support structure, the support structure comprising a leg having a tubular base extending in the vertical direction, and a shielding member according to any one of the above embodiments (1) to (4) that is attached to the base to block an upper end opening of the base. According to this aspect, since the shielding member according to the above aspect is provided, it is possible to reduce the manufacturing cost of the tabletop-equipped fixture and improve the manufacturing efficiency. Also, by pulling the member inside the leg column upward through the upper end opening and the pull-out port of the leg column, the lower leg space can be enlarged compared to when the member inside the leg column is pulled downward of the leg column. Furthermore, since the part pulled out from inside the leg column can be accommodated in the space surrounded by the base and the standing part, it is possible to improve the design freedom.

[0012] (6) In the display fixture with a tabletop relating to the above aspect (5), it is preferable that the support structure is provided at the lower end of the leg body and has a running section that enables the display fixture with a tabletop to run on the floor surface, and is provided with a switching mechanism that switches between a non-running state in which the running section is unable to run on the floor surface and a runnable state in which the running section is able to run on the floor surface, an operating section that is provided below the tabletop and operates the switching mechanism, and a linking section that is inserted into the leg column through the pull-out opening and connects the switching mechanism and the operating section. According to this aspect, the operation of the operating unit is transmitted to the switching mechanism via the linking unit. This allows the traveling unit to be switched between a non-traveling state and a travelling state. This improves the transportability of the display unit with a tabletop.

[0013] (7) In a display unit with a tabletop according to the above aspect (5) or (6), it is preferable that the display unit comprises a tabletop unit having a tabletop and a bracket provided on the underside of the tabletop, the tabletop unit being supported by the legs so as to be rotatable about an axis along the left-right direction between a use position in which the working surface of the tabletop faces upwards and a non-use position in which the working surface faces a first side in the fore-aft direction, and the shielding member is positioned in a position so as not to interfere with the bracket. According to this aspect, interference between the bracket and the shielding member can be suppressed, so that even when a shielding member is employed, damage to the shielding member can be suppressed. Effect of the Invention

[0014] According to each of the above aspects, for example, when manufacturing fixtures with tabletops, it is possible to reduce manufacturing costs and improve manufacturing efficiency. [Brief description of the drawings]

[0015] [Figure 1] This is an oblique view of a display unit with a top showing the top in the use position. [Diagram 2] This is an oblique view of a display unit with a top showing the top in an unused position. [Diagram 3]3 is a cross-sectional view corresponding to line III-III in FIG. 1, showing the caster unit in a non-traveling position. [Figure 4] FIG. 4 is a cross-sectional view corresponding to FIG. 3, showing the caster unit in a drivable position. [Diagram 5] FIG. [Figure 6] 6 is a cross-sectional view corresponding to the line VI-VI in FIG. 5. [Figure 7] 7 is a cross-sectional view corresponding to the line VII-VII in FIG. 5. [Figure 8] An enlarged oblique view of a display unit with a tabletop. [Figure 9] This is an enlarged oblique view of a display unit with a tabletop with the shielding mechanism etc. removed. [Figure 10] 9 is a cross-sectional view corresponding to the line XX in FIG. 8. [Figure 11] 10 is a cross-sectional view corresponding to line XI-XI in FIG. 8. [Figure 12] 10 is a cross-sectional view corresponding to line XII-XII in FIG. 8. [Figure 13] FIG. [Figure 14] FIG. 13 is an explanatory diagram of the operation of a display unit with a tabletop to explain the collective switching mode. [Figure 15] FIG. 13 is an explanatory diagram of the operation of a display unit with a tabletop to explain the collective switching mode. [Figure 16] FIG. 13 is an explanatory diagram of the operation of a display unit with a tabletop to explain the collective switching mode. [Figure 17] This is an enlarged oblique view of a display unit with a top, showing the top in an unused position. [Figure 18] This is a plan view of the area around the base legs when multiple tabletop-equipped display units are nested together. [Figure 19] FIG. 13 is an explanatory diagram of the operation of a display unit with a tabletop to explain the single switching mode. [Figure 20] 11 is a cross-sectional view corresponding to FIG. 10 of a display unit with a tabletop according to a modified example. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Next, an embodiment of the present invention will be described with reference to the drawings. In the embodiments and modifications described below, the same reference numerals may be used to designate corresponding configurations, and the description may be omitted. In the following description, expressions indicating relative or absolute arrangements, such as "parallel," "orthogonal," "center," and "coaxial," not only strictly indicate such arrangements, but also indicate a state in which the two surfaces are relatively displaced with an angle or distance to the extent that the same function is obtained. In this embodiment, "facing" does not only mean a case in which the orthogonal directions (normal directions) of the two surfaces are aligned with each other, but also includes a case in which the orthogonal directions intersect with each other.

[0017] <Display unit with tabletop 1> Fig. 1 is a perspective view of a tabletop-equipped fixture 1 with a tabletop 3 in a use position Q1. Fig. 2 is a perspective view of a tabletop-equipped fixture 1 with a tabletop 3 in a non-use position Q2, in which multiple tabletop-equipped fixtures 1 are nested. The tabletop-equipped furniture 1 shown in Figures 1 and 2 is a desk device installed in various facilities (for example, offices, halls, public facilities, etc.). The tabletop-equipped furniture 1 can run on the floor surface F via casters 2, and the position of the tabletop 3 can be changed depending on whether it is in use or not (so-called flap type). In the following explanation, the direction perpendicular to the floor surface F is defined as the up-down direction (arrow UP indicates the up side), and the two directions perpendicular to the up-down direction are defined as the front-rear direction (arrow FR indicates the front side) and the left-right direction (arrow LH indicates the left side), respectively.

[0018] The display unit 1 with a tabletop comprises a support structure 10, a tabletop unit 11, and an operating mechanism 12. <Support structure 10> The support structure 10 is placed on a floor surface F. The support structure 10 includes a pair of leg units 15 spaced apart in the left-right direction, and a connecting portion 16 that connects the pair of leg units 15 to each other. Each leg unit 15 has a left-right symmetrical configuration. Therefore, in the following explanation, the configuration of the leg unit 15 will be explained using one leg unit 15 as an example.

[0019] <Leg unit 15> Fig. 3 is a cross-sectional view corresponding to line III-III in Fig. 1, showing the caster unit 15b in a non-movable state P1. Fig. 4 is a cross-sectional view corresponding to Fig. 3, showing the caster unit 15b in a moveable state P2. As shown in FIGS. 3 and 4, the leg unit 15 includes a leg body 15a and a caster unit 15b.

[0020] FIG. 5 is a perspective view of the leg 15a. 3 to 5, the leg body 15a is formed in an L-shape when viewed from the left and right direction (side view). The base leg 21 extends in the front-rear direction and is formed in a box shape that is open downward. Specifically, the base leg 21 includes a base body 23, a front cap 24, and a rear cap 25.

[0021] The base body 23 is formed, for example, by press-molding a plate material made of a metal material. The base body 23 is formed in a U-shape that opens downward when viewed from the front-rear direction, and is open on both sides in the front-rear direction. As shown in FIG. 3, a front stay 23a is provided at the front end portion within the base body 23. The front stay 23a is formed in an L-shape when viewed from the side. The upper end edge and both left and right end edges of the front stay 23a are respectively joined to the inner surface of the base body 23. The front stay 23a is provided with an adjuster 26 that can be raised and lowered in the up-down direction. A rear stay 23b is provided at the rear end portion within the base body 23. The rear stay 23b is formed in an L-shape when viewed from the side. The upper end edge and both left and right end edges of the rear stay 23b are respectively joined to the inner surface of the base body 23.

[0022] 3 and 5, the front cap 24 is attached to the front end of the base body 23. The front cap 24 is made of an elastically deformable material such as a resin material. The front cap 24 includes a front outer portion 24a and a front buffer portion 24b.

[0023] The front outer shape portion 24a smoothly connects to the outer shape of the base body 23, and together with the base body 23, forms the outer shape of the base leg 21. Specifically, the front outer shape portion 24a is fitted into the base body 23 through the front opening of the base body 23 with a portion of the front outer shape portion 24a protruding forward from the base body 23. Therefore, the front outer shape portion 24a closes the front opening of the base body 23. In a plan view, at least both ends of the front outer shape portion 24a in the left-right direction are formed in an arc shape. The front outer shape portion 24a is fixed to the front stay 23a via a screw or the like. The lower surface of the front outer shape portion 24a is located above the lower surface of the adjuster 26. The front buffer portion 24b bulges out from the center in the up-down direction on the outer surface of the front outer portion 24a. Specifically, the front buffer portion 24b extends in a band shape over the entire length in the left-right direction.

[0024] The rear cap 25 is attached to the rear end of the base body 23. The rear cap 25 is made of, for example, a resin material, similar to the front cap 24. The rear cap 25 includes a rear outer portion 25a and a rear buffer portion 25b.

[0025] The outer surface of the rear outer shape portion 25a smoothly connects to the outer surface of the base body 23, and together with the base body 23, forms the outer shape of the base leg 21. The rear outer shape portion 25a is fitted into the base body 23 through the rear opening of the base body 23 with a part of the rear part protruding rearward from the base body 23. Therefore, the rear outer shape portion 25a closes the rear opening of the base body 23. At least both ends of the rear outer shape portion 25a in the left-right direction are formed in an arc shape in a plan view. The rear outer shape portion 25a is fixed to the rear stay 23b via a screw or the like. The lower surface of the rear outer shape portion 25a is located lower than the lower surface of the front outer shape portion 24a. The rear buffer portion 25b bulges out from the vertical center (at the same height as the front buffer portion 24b) of the outer surface of the rear outer portion 25a. Specifically, the rear buffer portion 25b extends in a band shape in the left-right direction over the entire length in the left-right direction. Note that it is sufficient that at least the front buffer portion 24b and the rear buffer portion 25b of the front cap 24 and the rear cap 25 are made of an elastically deformable material.

[0026] Fig. 6 is a cross-sectional view corresponding to the line VI-VI in Fig. 5. Fig. 7 is a cross-sectional view corresponding to the line VII-VII in Fig. 5. 6 and 7, of the two side walls 23d, 23e of the base body 23 facing each other in the left-right direction, the left side wall 23d is provided with a left side buffer section 30, and the right side wall 23e is provided with a right side buffer section 31. The left side buffer section 30 and the right side buffer section 31 are preferably made of a resin material (such as fluororesin or high density polyethylene) that is softer than the caps 24, 25. However, the left side buffer section 30 and the right side buffer section 31 may be made of the same material as the caps 24, 25.

[0027] The left-side buffer section 30 is attached to the central portion in the up-down direction of the outer surface of the left-side wall section 23d by, for example, double-sided tape, etc. The left-side buffer section 30 protrudes in the left-right direction from the left-side wall section 23d and extends in a band shape in the front-rear direction over the entire length of the left-side wall section 23d. The right-side buffer section 31 is attached to the vertical center of the outer surface of the right-side wall section 23e, for example, by double-sided tape or the like. The right-side buffer section 31 protrudes in the left-right direction from the right-side wall section 23e and extends in a strip shape in the front-rear direction over the entire length of the right-side wall section 23e. Note that each of the buffer sections 30, 31 may be attached to the side wall sections 23d, 23e by a method other than double-sided tape, as long as it is detachable from the corresponding side wall sections 23d, 23e. In this case, each of the buffer sections 30, 31 may be attached to the side wall sections 23d, 23e by a locking claw, a screw, or the like.

[0028] At least a part of each of the buffer sections 24b, 25b, 30, and 31 is disposed in the same height range in the vertical direction. In the illustrated example, the front buffer section 24b, the rear buffer section 25b, the left buffer section 30, and the right buffer section 31 are disposed in the same height as a whole. The front end faces of the left buffer section 30 and the right buffer section 31 are adjacent to or in contact with the rear end face of the front buffer section 24b. The rear end faces of the left buffer section 30 and the right buffer section 31 are adjacent to or in contact with the front end face of the rear buffer section 25b. The protruding amount (thickness) of the left buffer section 30 and the right buffer section 31 from the base body 23 is set to be equal to the protruding amount (thickness) of the front buffer section 24b and the rear buffer section 25b from the corresponding outer shape section 24a, 25a. Therefore, the outer surfaces of the buffer sections 24b, 25b, 30, and 31 are smoothly connected in a state of surrounding the entire circumference of the base leg 21. However, the protruding amount of each of the buffer portions 24b, 25b, 30, and 31 can be changed as appropriate.

[0029] As shown in Figs. 3 and 5, the leg pillar 22 is formed in a square tube shape. The leg pillar 22 extends upward from the rear end of the base leg 21. That is, the leg pillar 22 opens on both sides in the extension direction (vertical direction). In the illustrated example, the leg pillar 22 extends gradually forward as it extends upward. The inside of the leg pillar 22 communicates with the inside of the base leg 21 through a through hole 23c formed in the base main body 23. In the illustrated example, the left-right dimension of the leg pillar 22 is smaller than the left-right dimension of the base main body 23 (base leg 21). Therefore, the base leg 21 protrudes on both left-right sides from the leg pillar 22.

[0030] FIG. 8 is an enlarged perspective view of the tabletop-equipped fixture 1. As shown in FIG. As shown in Fig. 8, a connecting bracket 35 is provided at the upper part within the leg pillar 22. The connecting bracket 35 is formed by pressing a plate material such as metal, and is formed into a U-shape opening outward in the left-right direction in a plan view, and an L-shape in a front view. Specifically, the connecting bracket 35 includes an extension portion 35a, a top wall portion 35b, and a side portion 35c. The extension portion 35a extends in the vertical direction along an inner wall portion located on the inside in the left-right direction of the leg 22. The extension portion 35a is fixed to the inner wall portion of the leg 22. Top wall portion 35b extends outward in the left-right direction from the upper end edge of extension portion 35a. Top wall portion 35b is formed with a slit 35b1 (see FIG. 9) that penetrates top wall portion 35b in the up-down direction. The side surface portions 35c extend outward in the left-right direction from both front-rear direction edges of the extension portion 35a.

[0031] 3 and 4, caster unit 15b is housed within base leg 21 so as to be vertically movable. Caster unit 15b includes caster stays 36 and casters 2. Caster stays 36 extend in the front-rear direction within base leg 21. Casters 2 are provided at both ends of caster stay 36 in the front-rear direction.

[0032] The caster unit 15b transitions between a non-running state P1 and a runnable state P2 by the operation of the operating mechanism 12. In the non-runnable state P1, the lower end of the caster 2 is at the same position as the lower surface of the rear cap 25 and the lower surface of the adjuster 26, or is located above the lower surface of the rear cap 25 and the lower surface of the adjuster 26. That is, when the caster unit 15b is in the non-runnable state P1, the tabletop-equipped furniture 1 touches the floor surface F at least via the rear cap 25 and the adjuster 26. On the other hand, the runnable state P2 is a state in which each caster 2 protrudes downward from the rear cap 25 and the adjuster 26, so that each caster 2 touches the floor surface F. That is, when the caster unit 15b is in the runnable state P2, the tabletop-equipped furniture 1 can run on the floor surface F via the caster 2. In the following description, the state in which the caster unit 15b is in the non-runnable state P1 is used as a reference.

[0033] <Connection part 16> Fig. 9 is an enlarged perspective view of the tabletop-equipped furniture 1 with the shielding mechanism 120 etc. removed. Fig. 10 is a cross-sectional view corresponding to the line XX in Fig. 8. As shown in FIGS. 8 to 10, the connecting portion 16 includes a connecting plate 41 and a connecting beam . The connecting plate 41 is formed in a plate shape with its thickness direction being in the left-right direction. The connecting plate 41 is provided corresponding to each leg 22. Specifically, the lower part of the connecting plate 41 extends along the inner wall side part of each leg 22. The connecting plate 41 is attached to the leg 22 by fastening a bolt that penetrates the connecting plate 41 and the inner wall part to the extension part 35a. The upper part of the connecting plate 41 protrudes upward from the leg 22.

[0034] 9, a rotation restricting portion 41a and a return restricting portion 41b are formed in the center in the front-rear direction on the upper portion of the connecting plate 41. The rotation restricting portion 41a protrudes outward in the left-right direction from the connecting plate 41. The return restricting portion 41b protrudes outward in the left-right direction from a portion of the connecting plate 41 that is located above the rotation restricting portion 41a. A receiving portion 41c is formed in a portion of the connecting plate 41 that is located forward of the return restricting portion 41b. The receiving portion 41c is a recess that opens on the upper edge of the connecting plate 41.

[0035] The connecting beam 42 connects the upper parts of the connecting plates 41 provided on each leg column 22. The connecting beam 42 is fixed by welding or the like to a portion of the upper part of the connecting plate 41 that is located rearward of the receiving portion 41c.

[0036] <Tabletop unit 11> 1 and 2, the tabletop unit 11 is supported from below by a support structure 10. The tabletop unit 11 includes a tabletop 3 and a bracket 51. The tabletop 3 is formed in a rectangular shape with the longitudinal direction being the left-right direction when viewed from above (in a plan view). In the following description, the tabletop 3 will be described based on a state in which the work surface 3a of the tabletop 3 faces upward (use position Q1).

[0037] The brackets 51 are fixed to both left and right ends of the back surface 3b (the surface facing the opposite side to the work surface 3a) of the top board 3. Therefore, in the following description, the configuration of the bracket 51 will be described using one (the left side) bracket 51 as an example.

[0038] FIG. 11 is a cross-sectional view taken along line XI-XI in FIG. 8, 10, and 11, bracket 51 is formed in a U-shape that opens downward when viewed from the front. Specifically, bracket 51 includes a top wall portion 51a, an inner wall portion 51b, and an outer wall portion 51c. The top wall portion 51a is fixed to the rear surface 3b of the tabletop 3 at a position overlapping the upper end portion of the leg column 22 in a plan view. The inner wall portion 51b extends downward from the inner edge in the left-right direction of the top wall portion 51a. The outer wall portion 51c extends downward from the outer edge in the left-right direction of the top wall portion 51a.

[0039] The outer wall portion 51c is connected to the connecting plate 41 via a connecting shaft 55. The connecting shaft 55 is, for example, a bolt and a nut. The tabletop unit 11 is supported by the support structure 10 so as to be rotatable around the axis O1 of the connecting shaft 55 along the left-right direction. Specifically, the tabletop unit 11 rotates around the axis O1 between a use position Q1 (see FIG. 1) where the work surface 3a of the tabletop 3 faces upward, and a non-use position Q2 (see FIG. 2) where the work surface 3a of the tabletop 3 faces backward (one side in the front-rear direction). In defining the use position Q1 and the non-use position Q2, it is sufficient to define the front-rear component of the normal direction of the work surface 3a in the non-use position Q2 so as to be larger than that in the use position Q1. In this embodiment, the tabletop 3 in the use position Q1 is arranged with the work surface 3a parallel to the floor surface F. On the other hand, in the unused position Q2, the tabletop 3 is disposed in a state in which the work surface 3a intersects with the floor surface F at an acute angle.

[0040] <Operating mechanism 12> 8 and 9, the operating mechanism 12 changes the position of the tabletop unit 11 (hereinafter referred to as a flap operation) and moves the caster unit 15b up and down (hereinafter referred to as a caster switching operation). The operating mechanism 12 includes an interlocking shaft 61, a pair of operating modules 62, and an operating mechanism 64.

[0041] As shown in Fig. 1, the interlocking shaft 61 extends in the left-right direction in front of the connecting beam 42 (the other side in the front-rear direction). The interlocking shaft 61 is supported between a pair of brackets 51 so as to be rotatable about an axis O2 parallel to the axis O1. As shown in Fig. 10, both left-right end portions of the interlocking shaft 61 pass through the corresponding brackets 51 in the left-right direction. The portion of the interlocking shaft 61 located within the bracket 51 passes through the receiving portion 41c of the corresponding connecting plate 41.

[0042] 9, a pair of operating modules 62 are provided corresponding to each leg 15a. In the following description, the configuration of one of the operating modules 62 will be described by taking one of the operating modules 62 as an example.

[0043] The operating module 62 includes a linking lever 71, a tabletop switching lever 72, and a caster drive unit 73. The link lever 71 is formed in a plate shape with its thickness direction being in the left-right direction. The link lever 71 is configured to be rotatable together with the link shaft 61 within the bracket 51. That is, the link lever 71 is rotatably supported by the tabletop unit 11 via the link shaft 61.

[0044] FIG. 12 is a cross-sectional view corresponding to the line XII-XII in FIG. As shown in FIGS. 9 and 12, the link lever 71 includes a link base 71a and a transmission portion 71b. The link base 71a is a part that constitutes the outer shape of the link lever 71 in a side view. In the example shown in the figure, the link base 71a is formed in a fan shape. In a side view, the link shaft 61 is fixed to the center of the link base 71a. The transmission portion 71b is formed on the outer periphery of the linkage base 71a. The transmission portion 71b is a slit extending in an arc shape along the circumferential direction about the axis O2. Of the inner surfaces of the transmission portion 71b, a surface facing the first side in the circumferential direction about the axis O2 functions as a first end portion 71b1. On the other hand, of the inner surfaces of the transmission portion 71b, a surface facing the second side in the circumferential direction about the axis O2 functions as a second end portion 71b2.

[0045] The link lever 71 rotates integrally with the interlocking shaft 61 around the axis O2 in response to operation of the operating mechanism 64. In this embodiment, the link lever 71 is configured to be rotatable on both sides (on both sides in the front-rear direction) around the axis O2 relative to the reference position R1, with the reference position R1 being a position where no operating force is applied.

[0046] The table top switching lever 72 is disposed inside the bracket 51 in the left-right direction with respect to the linking lever 71. In a side view, a portion of the table top switching lever 72 overlaps with the linking lever 71. The table top switching lever 72 includes a lever body 72a, an engagement recess 72b, and an engagement protrusion 72c.

[0047] The lever body 72a is a part that constitutes the outer shape of the tabletop switching lever 72 in a side view. The interlocking shaft 61 penetrates the upper end of the lever body 72a. The tabletop switching lever 72 is supported by the interlocking shaft 61 so as to be rotatable about the axis O2. In other words, the tabletop switching lever 72 and the interlocking lever 71 are configured so as to be relatively rotatable about the axis O2. In addition, the tabletop switching lever 72 is rotatably supported by the tabletop unit 11 (bracket 51) and the interlocking lever 71 via the interlocking shaft 61.

[0048] The engagement recess 72b is open toward the rear at the bottom of the lever body 72a. In the illustrated example, the engagement recess 72b is a recess extending in the circumferential direction about the axis O2 and is open toward the second side in the circumferential direction about the axis O2. The engagement recess 72b moves between the locked state S1 and the unlocked state S2 with the rotation of the tabletop switching lever 72 about the axis O2. When the linkage lever 71 is in the reference position R1 and the tabletop switching lever 72 is in the locked state S1, the rotation restricting portion 41a is accommodated in the engagement recess 72b. As a result, the rotation restricting portion 41a engages with the inner surface of the engagement recess 72b in the vertical direction (the circumferential direction about the axis O1).

[0049] The tabletop switching lever 72 engages with the rotation restricting portion 41a to restrict the rotation of the tabletop unit 11 from the use position Q1 to the non-use position Q2 (see FIG. 2) relative to the support structure 10. On the other hand, as shown in FIG. 16, when the tabletop unit 11 is in the non-use position Q2, the engagement recess 72b moves to the locked state S1 to accommodate the return restricting portion 41b. As a result, the return restricting portion 41b engages with the inner surface of the engagement recess 72b in the vertical direction (circumferential direction around the axis O1). That is, the tabletop switching lever 72 engages with the return restricting portion 41b to restrict the rotation of the tabletop unit 11 from the non-use position Q2 to the use position Q1 relative to the support structure 10. Also, as shown in FIG. 14, when the engagement recess 72b is in the unlocked state S2, the engagement recess 72b retreats to a position (forward) that does not overlap with the rotation restricting portion 41a in a plan view, thereby releasing the engagement with the rotation restricting portion 41a. This allows the tabletop unit 11 to rotate relative to the support structure 10 between the use position Q1 and the non-use position Q2.

[0050] The engagement protrusion 72c protrudes outward in the left-right direction from a portion of the lever body 72a that is located forward of the engagement recess 72b. The engagement protrusion 72c extends obliquely upward and forward in a side view.

[0051] When the top board switching lever 72 is in the locked state S1, the linkage lever 71 rotates from the reference position R1 to the first side (forward) around the axis O2, and the linkage base 71a pushes the engagement protrusion 72c into the first side around the axis O2, so that the top board switching lever 72 rotates together with the linkage lever 71. As a result, the top board switching lever 72 moves from the locked state S1 to the unlocked state S2. On the other hand, when the top board switching lever 72 is in the locked state S1, the linkage base 71a moves away from the engagement protrusion 72c in the process of the linkage lever 71 rotating from the reference position R1 to the second side (rear) around the axis O2, and the linkage base 71a and the engagement protrusion 72c are released from engagement. In other words, when the linkage lever 71 rotates to the second side around the axis O2 relative to the top board switching lever 72, the linkage base 71a is configured to be able to retreat from the engagement protrusion 72c. As a result, the top board switching lever 72 maintains a stationary state in the locked state S1. Note that a lever biasing member (not shown) that biases the tabletop switching lever 72 toward the locked state S1 is interposed between the tabletop switching lever 72 and the tabletop unit 11 (for example, the top wall portion 51a).

[0052] 3 and 9, the caster drive unit 73 connects the link lever 71 and the caster unit 15b. The caster drive unit 73 moves the caster unit 15b between the non-traveling state P1 and the travelling state P2 in accordance with the rotation of the link lever 71. Specifically, the caster drive unit 73 includes a connection bar 90, a rear link bar 91, and a front link bar 92.

[0053] The connecting bar 90 connects the link lever 71 and the rear link bar 91. The connecting bar 90 passes through the leg column 22 in the up-down direction. Specifically, the upper end of the connecting bar 90 protrudes upward beyond the leg column 22 through the slit 35b1. A connecting pin 90a protrudes inward in the left-right direction from the upper end of the connecting bar 90. The connecting pin 90a is housed in the transmission part 71b. In other words, the connecting pin 90a is provided movably within the transmission part 71b.

[0054] The connecting pin 90a is pushed rearward by the second end portion 71b2 during the process of the linking lever 71 rotating from the reference position R1 to the second side (rearward) about the axis O2, and moves integrally with the linking lever 71. That is, the connecting pin 90a revolves around the axis O2. As the connecting pin 90a moves integrally with the linking lever 71, the connecting bar 90 is pulled upward (see FIG. 20).

[0055] As shown in FIG. 3 and FIG. 6, the rear link bar 91 extends downward toward the front. Specifically, the rear link bar 91 includes a central connecting portion 91a, a first connecting portion 91b, and a second connecting portion 91c. The central connecting portion 91a is connected to a portion located forward of the through-hole 23c so as to be rotatable about an axis along the left-right direction. Specifically, a rear connecting shaft 100 extending in the left-right direction passes through the central connecting portion 91a. The left end of the rear connecting shaft 100 is inserted into a rear insertion hole 23d1 formed in the left side wall portion 23d. The right end of the rear connecting shaft 100 is inserted into a rear insertion hole 23e1 formed in the right side wall portion 23e.

[0056] The first connecting portion 91b extends rearward from the central connecting portion 91a. The first connecting portion 91b is connected to the lower end of the connecting bar 90 in the leg column 22 so as to be rotatable around an axis along the left-right direction. The second connecting portion 91c extends forward from the central connecting portion 91a. The second connecting portion 91c is connected to the rear of the caster stay 36 so as to be rotatable around an axis along the left-right direction. That is, the rear link bar 91 rotates around the central connecting portion 91a as an operating force is applied in the up-down direction via the first connecting portion 91b with the up-down movement of the connecting bar 90. As a result, the rear link bar 91 rotates so that the second connecting portion 91c moves downward with the upward movement of the connecting bar 90, and rotates so that the second connecting portion 91c moves upward with the downward movement of the connecting bar 90.

[0057] As shown in FIG. 3 and FIG. 7, the front link bar 92 is rotatably connected to the base leg 21 and the caster stay 36 at the front end portion thereof in the base leg 21. The front link bar 92 extends downward as it moves forward. A first end portion of the front link bar 92 is rotatably connected to the front portion of the base leg 21 (a portion located forward of the rear link bar 91) about an axis along the left-right direction. Specifically, a front connecting shaft 101 extending in the left-right direction penetrates the first end portion of the front link bar 92. A left end portion of the front connecting shaft 101 is inserted into a front through-hole 23d2 formed in the left side wall portion 23d. A right end portion of the front connecting shaft 101 is inserted into a front through-hole 23e2 formed in the right side wall portion 23e.

[0058] A second end of the front link bar 92 is connected to the caster stay 36 so as to be rotatable about an axis along the left-right direction. The front link bar 92 rotates relative to the base leg 21 and the caster stay 36 as the caster stay 36 moves up and down due to the rotation of the rear link bar 91, thereby moving the front end of the caster stay 36 up and down relative to the base leg 21. In other words, the rear link bar 91 and the front link bar 92, together with the base body 23 and the caster stay 36, constitute a so-called parallel link. The caster unit 15b is urged to the non-traveling state P1 by a caster urging member (not shown) provided between the caster stay 36 and the base leg 21.

[0059] 5 to 7, the insertion holes 25d1 and 25d2 formed in the left side wall portion 23d are disposed at the same height in the up-down direction while being separated from each other in the front-rear direction. In this embodiment, the insertion holes 25d1 and 25d2 are entirely blocked by the left buffer portion 30. That is, the width in the up-down direction of the left buffer portion 30 is larger than the inner diameter of each of the insertion holes 25d1 and 25d2.

[0060] On the other hand, the insertion holes 25e1, 25e2 formed in the right side wall portion 23e are arranged at the same height in the up-down direction while being separated in the front-rear direction. In this embodiment, the insertion holes 25e1, 25e2 are entirely blocked by the right buffer portion 31. That is, the width in the up-down direction of the right buffer portion 31 is larger than the inner diameter of each of the insertion holes 25e1, 25e2. Note that the insertion holes formed in the same side wall portions 23d, 23e may be arranged offset from each other in the up-down direction as long as they are covered by the corresponding buffer portions 30, 31. Also, each buffer portion 30, 31 may be formed with a clearance portion for accommodating the end portion of the connecting shaft 100, 101.

[0061] 8 and 9, the operation mechanism 64 is provided, for example, near the left leg unit 15 in correspondence with the right-side operating module 62. The operation mechanism 64 operates the operating module 62. The operation mechanism 64 includes an interlocking member 110 (see FIG. 9), a connection portion 111, and an operation portion 112. The operation mechanism 64 may be provided in each of the operating modules 62.

[0062] The interlocking member 110 connects between the connection portion 111 and the interlocking shaft 61. Specifically, the interlocking member 110 extends in a direction intersecting the left-right direction (up-down direction) in a side view. A first end of the interlocking member 110 is fixed to a portion of the interlocking shaft 61 that is located inside the bracket 51 in the left-right direction.

[0063] The connection part 111 connects between the interlocking member 110 and the operating part 112. The connection part 111 is made of a material with excellent rigidity (for example, metal, etc.). The connection part 111 is formed in a plate shape with a thickness direction in the left-right direction. The connection part 111 extends in the front-rear direction along the rear surface 3b of the tabletop 3. The rear end of the connection part 111 is connected to the second end of the interlocking member 110 at a portion located above the interlocking shaft 61. In this embodiment, the rear end of the connection part 111 and the second end of the interlocking member 110 are connected to be relatively rotatable around an axis along the left-right direction. The front end of the connection part 111 reaches the front end of the tabletop 3.

[0064] The operation unit 112 is a part of the operation mechanism 64 that is operated by the user. The operation unit 112 is supported on the rear surface 3b of the tabletop 3 at the front end portion of the tabletop 3 via a bracket 51. Specifically, the operation unit 112 includes a support piece 112a and an operation piece 112b. The support piece 112a is disposed inside the bracket 51. An operating shaft 113 that is bridged between the inner wall portion 51b and the outer wall portion 51c penetrates the support piece 112a. As a result, the support piece 112a is supported by the bracket 51 so as to be rotatable about an axis along the left-right direction. A rear end portion of the connection portion 111 is connected to a lower end portion of the support piece 112a (a boundary portion with the operation piece 112b). In this embodiment, the operation portion 112 and the rear end portion of the connection portion 111 are connected so as to be rotatable relative to each other about an axis along the left-right direction.

[0065] The operation piece 112b is connected to the lower end of the support piece 112a. In a side view, the operation piece 112b is formed in a plate shape extending downward toward the rear. In this embodiment, the operation piece 112b protrudes outward in the left-right direction from the support piece 112a. Therefore, the operation piece 112b is provided so as to be accessible from both the outside in the left-right direction and the front with respect to the top plate 3. Note that a cutout portion 51d is formed in a portion of the outer wall portion 51c that is located on the rotation trajectory of the operation piece 112b.

[0066] 8, a shielding mechanism 120 is provided between the leg pillar 22 and the bracket 51. The shielding mechanism 120 is provided corresponding to each leg pillar 22. In the following explanation, the shielding mechanism 120 provided corresponding to one leg pillar 22 (the right side) will be used as an example to explain the details of the shielding mechanism 120.

[0067] The shielding mechanism 120 shields a portion of the operating module 62 that is located between the leg 22 and the bracket 51 (for example, the linking lever 71 and the tabletop switching lever 72 (hereinafter referred to as the external mechanism)). The shielding mechanism 120 includes a first shielding member 121 and a second shielding member 122.

[0068] FIG. 13 is an exploded perspective view of the shielding mechanism 120. As shown in FIG. 13, the first shielding member 121 is, for example, a molded product made of a resin material. The first shielding member 121 is fixed to the upper end of the leg 22. The first shielding member 121 includes a base 131, a front standing piece 132, and a side standing piece 133.

[0069] 12 and 13, the base 131 closes the upper end opening of the leg 22. The base 131 includes a seat portion 131a and a fitting portion 131b. The base portion 131a is supported on the edge of the upper end opening of the leg pillar 22 so as to cover the upper end opening of the leg pillar 22. In the illustrated example, the outer shape of the base portion 131a in a plan view is formed to be equivalent to the outer shape of the leg pillar 22 in a plan view. The fitting portion 131b protrudes downward from the base portion 131a and is fitted into the inside of the leg 22 through an opening at the upper end of the leg 22.

[0070] The base 131 is attached to the leg pillar 22 by fixing a screw that penetrates the base 131 in the vertical direction to the top wall portion 35b. As shown in Fig. 10, the base 131 has an outlet 131c formed at a position that overlaps with the slit 35b1 in a plan view. The upper end of the connecting bar 90 protrudes above the leg pillar 22 through the slit 35b1 and the outlet 131c.

[0071] 13, the front standing piece 132 extends upward from the front end edge of the base 131 (pedestal portion 131a). The front standing piece 132 covers the external mechanism of the operating module 62 from the front. The front standing piece 132 includes a front wall 132a, a standing side wall 132b, and a positioning portion 132c. The front wall 132a includes an outward extending portion 132a1 and a straight extending portion 132a2. The outward extending portion 132a1 extends upward from the front end edge of the base portion 131, and is inclined forward. The straight extending portion 132a2 extends upward in a straight line from the upper end edge of the outward extending portion 132a1. Therefore, the straight extending portion 132a2 protrudes forward relative to the leg column 22. In addition, a clearance portion 132a3 that is open outward in the left-right direction and upward is formed at the upper portion of the straight extending portion 132a2. The clearance portion 132a3 accommodates a part of the outer wall portion 51c of the bracket 51. That is, the clearance portion 132a3 suppresses interference between the bracket 51 and the front standing piece 132 and the side standing piece 133 (standing portion) of the first shielding member 121.

[0072] The upright side walls 132b extend rearward from the outer left-right edges of the front wall 132a and over the entire length of the front wall 132a in the up-down direction. The positioning portion 132c is provided at a portion of the upper end of the linear extension portion 132a2 that is located on the inside in the left-right direction. The positioning portion 132c has a pair of plate-shaped portions that extend in the up-down direction and face each other in the left-right direction. The front end of the connection plate 41 is accommodated inside the positioning portion 132c (see FIG. 11).

[0073] The side standing pieces 133 extend upward from the outer edge in the left-right direction of the base 131 (pedestal portion 131a). The side standing pieces 133 cover the external mechanism of the operating module 62 from the outside in the left-right direction. In other words, the area above the base 131 and surrounded by the side standing pieces 133 and the front standing piece 132 constitutes a mechanism space 135 that houses the external mechanism. The mechanism space 135 communicates with the inside of the leg column 22 through the draw-out opening 131c. Moreover, the mechanism space 135 is open toward the inside in the left-right direction and toward the rear above the leg column 22.

[0074] The lateral upright piece 133 includes an outward extending portion 133a and a straight extending portion 133b. The outward extending portion 133a extends at an incline outward in the left-right direction as it extends upward from the base portion 131. The straight extending portion 133b extends upward in a straight line from the upper end edge of the outward extending portion 133a. Therefore, the straight extending portion 133b protrudes outward in the left-right direction relative to the leg pillar 22.

[0075] The second shielding member 122 is, for example, a molded product made of a resin material. The second shielding member 122 is fixed to the tabletop unit 11 and is rotatable integrally with the tabletop unit 11 around the axis O1. The second shielding member 122 includes a front shielding portion 140 and a side shielding portion 141.

[0076] The front shielding part 140 is disposed in front of the front standing piece 132. That is, when the top plate 3 is in the use position Q1, the external mechanism is covered from the front by the front standing piece 132 and the front shielding part 140. In a side view, the front shielding part 140 is formed in an arc shape extending rearward as it goes downward. The upper end of the front shielding part 140 is close to the top wall part 51a from below on the inside of the bracket 51. The lower end of the front shielding part 140 is close to the outward extending part 132a1 from the front. The locking claws 140a are formed on both left and right end edges of the front shielding part 140. The locking claws 140a are locked to locking holes 51e formed in the inner wall part 51b and the outer wall part 51c. That is, the second shielding member 122 is attached to the top plate unit 11 via the bracket 51.

[0077] The side shielding portion 141 extends rearward from the outer edge in the left-right direction of the front shielding portion 140. The rear edge (tip edge) of the side shielding portion 141 faces the outer peripheral edge of the outer wall portion 51c from the front and below. The rear edge of the side shielding portion 141 is formed following the part facing the side shielding portion 141. That is, the rear edge of the side shielding portion 141 is close to or abuts against the outer peripheral edge of the outer wall portion 51c. Therefore, the side shielding portion 141 covers the external mechanism from the outside in the left-right direction together with the bracket 51. The lower end of the side shielding portion 141 is located in the mechanism space 135 through the gap between the front standing piece 132 and the side standing piece 133.

[0078] <How to use the display unit with tabletop 1> Next, a method of using the tabletop-equipped fixture 1 will be described. The tabletop-equipped fixture 1 of this embodiment is designed to perform caster switching operation regardless of the presence or absence of flap operation. In the following explanation, a collective switching mode in which the caster switching operation is performed when the tabletop unit 11 is moved to the unused position Q2, and a single switching mode in which the caster switching operation is performed while the tabletop unit 11 is in the used position Q1 will be described. In the following explanation, the tabletop unit 11 will be described as being in the initial state when it is in the used position Q1 and the caster unit 15b is in the non-traveling state P1.

[0079] 14 to 16 are diagrams illustrating the operation of the tabletop-equipped fixture 1 for explaining the collective switching mode, and correspond to FIG. First, the collective switching mode will be described. With the tabletop-equipped furniture 1 in the initial position, the operating unit 112 is pushed backward as shown in FIG. 14. Then, the operating unit 112 rotates, and the second end of the interlocking member 110 is pushed backward via the connection unit 111. This causes the interlocking shaft 61 to rotate to the first side about the axis O2. The rotation of the interlocking shaft 61 causes each of the interlocking levers 71 of the pair of operating modules 62 to rotate from the reference position R1 to the first side about the axis O2. Below, the operation of one (left) operating module 62 of the pair of operating modules 62 will be described as an example.

[0080] When the link lever 71 rotates from the reference position R1 to the first side about the axis O2, the link lever 71 (link base 71a) pushes the engagement protrusion 72c to the first side about the axis O2. Then, the table top switching lever 72 rotates together with the link lever 71 to the first side about the axis O2 (see arrow Y1). When the link lever 71 rotates to the first side about the axis O2, the connecting pin 90a moves relatively toward the first end portion 71b1 within the transmission portion 71b. Therefore, even if the link lever 71 rotates to the first side about the axis O2, the connecting bar 90 maintains a stationary state.

[0081] When the tabletop switching lever 72 rotates to the first side about the axis O2 against the biasing force of the lever biasing member, the tabletop switching lever 72 transitions from the locked state S1 to the unlocked state S2, causing the rotation restricting portion 41a to disengage from the engaging recess 72b (disengage). This allows the tabletop unit 11 to rotate about the axis O1 relative to the support structure 10.

[0082] After the tabletop switching lever 72 transitions to the unlocked state S2, the tabletop unit 11 is moved toward the unused position Q2. Specifically, as shown in FIG. 15, the front end of the tabletop 3 is pushed up while the operation part 112 is pressed in (while the linkage lever 71 is rotated to the first side about the axis O2). Then, the tabletop unit 11 rotates about the axis O1. As a result, after the interlocking shaft 61 comes out of the receiving part 41c, the tabletop unit 11 transitions to the unused position Q2.

[0083] In the process of the tabletop unit 11 moving from the use position Q1 to the non-use position Q2, the axis O2 revolves upward around the axis O1. This causes the linking lever 71 and the tabletop switching lever 72 to revolve around the axis O1. Then, the connecting pin 90a abuts against the first end portion 71b1 in the transmission portion 71b. In this state, the linking lever 71 further revolves around the axis O1, so that the connecting bar 90 is pulled up via the linking lever 71.

[0084] As shown in FIG. 3 and FIG. 4, when the first connecting portion 91b is pulled up with the upward movement of the connecting bar 90, the rear link bar 91 rotates with the central connecting portion 91a as the starting point. As a result, the second connecting portion 91c moves downward, and the rear end of the caster unit 15b is pushed down via the caster stay 36. Also, with the downward movement of the caster stay 36, the front link bar 92 rotates so that the second end of the front link bar 92 faces downward, and the front end of the caster unit 15b is also pushed down. As a result, the caster unit 15b moves to the movable state P2 against the biasing force of the caster biasing member. That is, in the tabletop-equipped furniture 1 of this embodiment, the caster unit 15b moves from the non-movable state P1 to the movable state P2 as the tabletop unit 11 moves from the use position Q1 to the non-use position Q2.

[0085] As shown in FIG. 16, after the caster unit 15b transitions to the movable state P2, the operating force on the operating unit 112 is released. For example, the biasing force of the lever biasing member acts on the link lever 71 via the tabletop switching lever 72. Therefore, by releasing the operating force on the operating unit 112, the link lever 71 and the tabletop switching lever 72 rotate integrally to the second side around the axis O2. As a result, the link lever 71 returns to the reference position R1, and the tabletop switching lever 72 returns to the locked state S1. When the tabletop switching lever 72 returns to the locked state S1 with the tabletop unit 11 in the unused position Q2, the engagement recess 72b fits (engages) with the return restriction portion 41b from above. This restricts the rotation of the tabletop unit 11 to the unused position Q2 relative to the support structure 10. In addition, the link lever 71 rotates to the second side around the axis O2, and the interlocking shaft 61 rotates to the second side around the axis O2. As a result, the operating portion 112 rotates via the interlocking member 110 and the connecting portion 111, and the operating portion 112 returns to the initial position M1.

[0086] FIG. 17 is an enlarged perspective view of the tabletop-equipped fixture 1, showing the tabletop 3 in the unused position Q2. 8 and 17, in the process of the tabletop 3 moving from the use position Q1 to the non-use position Q2, the second shielding member 122 rotates together with the tabletop 3 around the axis O1. That is, the second shielding member 122 is displaced upward around the axis O1 relative to the first shielding member 121. In this case, the external mechanism of the operating module 62 maintains a state in which a portion extending from the front to the top is covered by the front upright piece 132 and the front shielding portion 140, and the outer sides in the left and right directions are covered by the side upright piece 133, the upright side wall 132b, and the side shielding portion 141.

[0087] FIG. 18 is a plan view of the periphery of the base leg 21 when multiple tabletop-equipped fixtures 1 are nested. As shown in FIG. 2 and FIG. 18, by using the collective switching mode, the tabletop-equipped fixture 1 can be moved on the floor surface F with the tabletop unit 11 flipped up to the unused position Q2. In this case, it becomes possible to store a plurality of tabletop-equipped fixtures 1 with the tabletops 3 stacked in the front-rear direction (so-called nesting state). Specifically, among the tabletop-equipped fixtures 1A and 1B stacked in the front-rear direction, one (for example, the left) leg unit 15 of the rear tabletop-equipped fixture 1B is inserted between a pair of leg units 15 of the front tabletop-equipped fixture 1A, while the tabletop-equipped fixtures 1A and 1B are brought closer to each other in the front-rear direction. At this time, the tabletop-equipped fixtures 1A and 1B are stacked in the front-rear direction with the corresponding leg units 15 brought closer to each other in the left-right direction. This allows the storage space of the tabletop-equipped fixture 1 to be reduced in the unused position Q2. The tabletop-equipped fixtures 1A, 1B are restricted from approaching each other in the front-rear direction, for example, by the shielding mechanism 120 of the rear tabletop-equipped fixture 1B coming into contact with the work surface 3a of the front tabletop-equipped fixture 1A. In addition, in this embodiment, a configuration in which one leg unit 15 of the rear tabletop-equipped fixture 1B is inserted between a pair of leg units 15 of the front tabletop-equipped fixture 1A has been described, but this configuration is not limited to this. The tabletop-equipped fixtures 1A, 1B may be nested by inserting one leg unit 15 of the front tabletop-equipped fixture 1A between a pair of leg units 15 of the rear tabletop-equipped fixture 1B.

[0088] When returning the tabletop-equipped furniture 1 to the initial position, the reverse operation to the above-mentioned case is performed. That is, the link lever 71 is rotated to the first side around the axis O2 via the operating unit 112, and the tabletop switching lever 72 is moved to the unlocked state S2, and the tabletop unit 11 is rotated around the axis O1. This causes the tabletop unit 11 to return to the use position Q1. In the process of the tabletop unit 11 moving to the use position Q1, the link lever 71 and the tabletop switching lever 72 rotate downward around the axis O1. This causes the caster unit 15b to be pulled up from the movable state P2 to the non-movable state P1 via the connecting bar 90. As a result, the tabletop-equipped furniture 1 touches the floor surface F via the rear cap 25 and the adjuster 26. In the process of the tabletop unit 11 moving between the use position Q1 and the non-use position Q2, the outer wall portion 51c of the bracket 51 advances and retreats relative to the escape portion 132a3.

[0089] Next, the single switching mode will be described. Fig. 19 is an operation explanatory diagram for explaining the single switching mode, and corresponds to Fig. 12. As shown in FIG. 19, when the operating portion 112 is pulled to the second side (forward) around the axis O4, the second end of the interlocking member 110 is pulled forward via the connecting portion 111. This causes the interlocking shaft 61 to rotate to the second side around the axis O2. By the rotation of the interlocking shaft 61, each interlocking lever 71 of the pair of operating modules 62 rotates from the reference position R1 to the second side around the axis O2 (see arrow Y2). At this time, the interlocking lever 71 rotates independently of the tabletop switching lever 72, so that the interlocking lever 71 rotates while the tabletop switching lever 72 maintains the locked state S1. Then, the connecting pin 90a is pushed to the second side around the axis O2 by the second end portion 71b2 in the process of the interlocking lever 71 rotating from the reference position R1 to the second side (rearward) around the axis O2. This causes the connecting bar 90 to be pulled up. 3 and 4, the connecting bar 90 lowers the caster unit 15b, and the caster unit 15b transitions from the non-movable state P1 to the movable state P2. That is, in the single switching mode, the caster unit 15b transitions from the non-movable state P1 to the movable state P2 while the tabletop unit 11 is maintained in the use position Q1.

[0090] In the single switching mode, the tabletop unit 11 can be moved on the floor surface F while being maintained in the use position Q1. Therefore, when fine-tuning the position of the tabletop-equipped furniture 1, it can be done without lifting up the tabletop unit 11.

[0091] In the single switching mode, to return the tabletop-equipped furniture 1 to its initial position (the caster unit 15b to the non-traveling state P1 again), for example, the operating unit 112 is returned to its original position. Then, the linking lever 71 rotates toward the first side about the axis O2, and the linking lever 71 returns to the reference position R1. Also, as the linking lever 71 rotates to the reference position R1, the second end portion 71b2 tries to move away from the connecting pin 90a. Then, the biasing force of the caster biasing member raises the caster unit 15b from the travelling state P2 to the non-travelling state P1. As a result, the connecting bar 90 is pulled down.

[0092] Here, the first shielding member (shielding member) 121 of this embodiment is attached to a leg (tubular member) 22 extending in the vertical direction, thereby closing an upper end opening (opening) of the leg 22. The first shielding member 121 includes a base 131 and standing pieces (standing portions) 132, 133 extending upward (first side in the first direction, outer side in the first direction) from the peripheral edge of the base 131. The base 131 is formed with a draw-out opening 131c that penetrates the base 131 in the vertical direction and communicates a mechanism space (space) 135 surrounded by the base 131 and the standing pieces 132, 133 with the inside of the leg 22. According to this configuration, because the pull-out opening 131c is formed in the base 131, the connecting bar 90 arranged inside the leg column 22 can be pulled out above the leg column 22 without performing post-processing such as forming an opening in the side surface of the leg column 22. This makes it possible to reduce manufacturing costs and improve manufacturing efficiency when manufacturing the tabletop-equipped fixture 1. In addition, in the first shielding member 121 of this embodiment, a mechanism space 135 surrounded by the base 131 and the standing pieces 132, 133 communicates with the inside of the leg column 22 through the pull-out opening 131c. Therefore, it is possible to surround the upper end of the connecting bar 90 (the portion pulled out above the leg column 22) and the external mechanism (the linking lever 71 and the tabletop switching lever 72) linked to the upper end of the connecting bar 90 with the standing pieces 132, 133. This prevents the external mechanism from being exposed to the outside, improving the appearance and preventing objects and the like from coming into contact with the external mechanism.

[0093] In the first shielding member 121 of this embodiment, a portion of the upright pieces 132, 133 is positioned outside the leg 22 in the front-rear direction or the left-right direction. According to this configuration, the mechanism space 135 can be expanded in the front-rear or left-right directions compared to a configuration in which the standing pieces 132, 133 are located on the outer surface of the leg column 22 or on the inside in the front-rear or left-right directions. This improves the layout flexibility within the mechanism space 135.

[0094] In the first shielding member 121 of this embodiment, the upright pieces 132, 133 are configured to have outward extending portions 132a1, 133a that extend upward from the base 131 and extend away from the base 131 in the front-to-back or left-to-right direction (second direction), and linear extending portions 132a2, 133b that extend upward from the outward extending portions 132a1, 133a. According to this configuration, the outward extending portions 132a1, 132b gradually expand the mechanism space 135 as it moves upward. In this case, compared to a configuration in which the peripheral portion of the base 131 projects outward beyond the leg pillar 22, for example, it is possible to expand the mechanism space 135 while reducing the step at the boundary between the leg pillar 22 and the first shielding member 121. This makes it possible to improve the appearance of the furniture with a top panel 1.

[0095] The first shielding member 121 of the present embodiment is made of a resin material. According to this configuration, since the first shielding member 121 is made of a resin material, the outlet 131c can be formed at the same time when the first shielding member 121 is manufactured as a molded product, which can reduce manufacturing costs and improve manufacturing efficiency.

[0096] In the tabletop-equipped fixture 1 of this embodiment, the support structure 10 is configured to include a leg 15a having a leg pillar 22 extending in the vertical direction, and a first shielding member 121 that closes the upper end opening of the leg pillar 22. With this configuration, since the first shielding member 121 described above is provided, it is possible to reduce the manufacturing cost and improve the manufacturing efficiency of the tabletop-equipped fixture 1. By drawing the member (connecting bar 90) inside the leg column 22 upward through the upper end opening and the drawer outlet 131c of the leg column 22, it is possible to enlarge the lower leg space compared to the case where the member inside the leg column 22 is drawn downward from the leg column 22. Furthermore, since the part drawn out from inside the leg column 22 can be accommodated in the mechanism space 135 surrounded by the base 131 and the upright pieces 132, 133, it is possible to improve the degree of freedom in design.

[0097] In the tabletop-equipped furniture 1 of this embodiment, the support structure 10 is equipped with casters 2 provided at the lower ends of the legs 15a. The tabletop-equipped furniture 1 is equipped with link bars (switching mechanisms) 91, 92 that switch between a non-running state P1 in which the casters 2 cannot run on the floor surface F and a runnable state P2 in which the casters 2 can run on the floor surface F, an operating unit 112 provided below the tabletop 3, and a connecting bar (connecting unit) 90 that is inserted into the legs 15a (leg columns 22) through the pull-out opening 131c and connects the link bars 91 and the operating unit 112. According to this configuration, the operation of the operating unit 112 is transmitted to the link bars 91, 92 via the connecting bar 90. This allows the casters 2 to be switched between the non-traveling state P1 and the travelling state P2. This improves the transportability of the tabletop-equipped furniture 1.

[0098] In the present embodiment of the tabletop-equipped fixture 1, the tabletop unit 11 is supported by the legs 22 so as to be rotatable about an axis O1 along the left-right direction between a use position Q1 in which the work surface 3a of the tabletop 3 faces upward, and a non-use position Q2 in which the work surface 3 faces backward (first side in the front-to-rear direction), and the first shielding member 121 is positioned so as not to interfere with the bracket 51. According to this configuration, interference between the bracket 51 and the first shielding member 121 can be suppressed, so that even when the first shielding member 121 is employed, damage to the first shielding member 121 can be suppressed.

[0099] (Other variations) Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Addition, omission, substitution, and other modifications of the configuration are possible without departing from the spirit of the present invention. The present invention is not limited by the above description, but is limited only by the scope of the attached claims. In the above embodiment, the caster unit 15b moves up and down by the parallel link to move between the non-travelable state P1 and the travelable state P2, but the present invention is not limited to this configuration. The caster drive unit 73 may be configured to switch between restricting and allowing the rotation of the caster 2 itself by, for example, a brake or a gear lock. In this case, the tabletop-equipped furniture 1 always touches the floor surface F via the caster 2. In the above embodiment, the connecting bar 90 arranged inside the leg pillar 22 is pulled out through the pull-out opening 131c. However, the present invention is not limited to this configuration. A wire or the like may be arranged inside the leg pillar 22. In the above embodiment, the configuration in which the caster 2 is moved up and down by the connecting bar 90 has been described, but the present invention is not limited to this configuration. The wiring and the like arranged inside the leg pillar 22 may be pulled out through the pull-out opening 131c. In other words, the caster 2 is not limited to a configuration in which it can be switched between the non-traveling state P1 and the travelling state P2.

[0100] In the above embodiment, the configuration in which the tabletop 3 moves between the use position Q1 and the non-use position Q2 has been described, but the present invention is not limited to this configuration. The tabletop 3 may have the work surface 3a always facing upward. In the above embodiment, a desk has been used as an example of the tabletop-equipped fixture 1 according to the present invention, but the present invention is not limited to this configuration. The tabletop-equipped fixture according to the present invention can be used in various fixtures having a tabletop, such as shelves and cart devices. In the above embodiment, the pedestal 22 is used as an example of the tubular member, but the present invention is not limited to this configuration. The tubular member may be a member other than the pedestal 22 constituting the tabletop-equipped furniture 1. In the above embodiment, a configuration has been described in which the tabletop-equipped fixture 1 includes a pair of leg units 15, but the present invention is not limited to this configuration. The number of leg units 15 may be one. Furthermore, the fixture to which the first shielding member 121 is attached is not limited to a tabletop-equipped fixture, but may be a chair, a partition, or the like. In this case, the tubular member may extend not only in the up-down direction, but also in the left-right direction or the front-rear direction.

[0101] In the above embodiment, the first shielding member 121 closes the opening on one side of the tubular member (leg 22), but the present invention is not limited to this configuration. The first shielding member 121 may close the openings on both sides of the tubular member. In the above embodiment, the configuration has been described in which the outer shape of the base 131 (pedestal 131a) in plan view is formed to be equivalent to the outer shape of the leg 22 in plan view, but this is not limited to the configuration. The outer shape of the pedestal 131a in plan view may protrude beyond the outer shape of the leg 22 in plan view. In the above-described embodiment, the standing pieces 132, 133 are configured to include the outward extending portions 132a1, 133a and the linear extending portions 132a2, 133b, but are not limited to this configuration. The standing pieces 132, 133 may include only the outward extending portions 132a1, 133a, or may include only the linear extending portions 132a2, 133b.

[0102] In the above-described embodiment, the upright portion includes the front upright piece 132 and the side upright piece 133, and the mechanism space 135 is open to the upper, rear, and left and right inward directions. However, the present invention is not limited to this configuration. For example, as in the tabletop-equipped furniture 1 shown in FIG. 20, the first shielding member 121 may include a top wall portion (upright portion) 201 that closes the mechanism space 135 from above, and a rear upright piece (upright portion) 202 that closes the mechanism space 135 from the rear. In this modified example, the legs 22 are arranged side by side on the outer side in the left and right directions relative to the bracket 51. The front upright piece 132, the side upright piece 133, and the rear upright piece 202 are connected to each other when they are adjacent to each other, thereby closing the mechanism space 135 from both sides in the front and rear directions and from the outside in the left and right directions. The top wall 201 is connected to the upper edges of the upright pieces 132, 133, 202, thereby closing off the mechanism space 135 from above. That is, the first shielding member 121 is formed in a box shape that is open on the inside in the left-right direction. A connection pin 203 is provided at the upper end of the connecting bar 90, which connects the connecting bar 90 and the transmission part 71b of the linking lever 71. The connecting pin 203 is connected to the linking lever 71 (transmission part 71b) through an inner opening in the left-right direction of the first shielding member 121.

[0103] The inner opening in the left-right direction of the first shielding member 121 faces the outer wall portion 51c with a gap in the left-right direction. In this case, it is preferable that the outer wall portion 51c closes the entire inner opening in the left-right direction of the first shielding member 121 with a gap that prevents a finger or the like from entering the first shielding member 121.

[0104] As long as the first shielding member 121 is configured so that at least the connection pin 203 and the like are pulled out from the mechanism space 135, a counter upright piece may be provided in a portion facing the lateral upright piece 133. In the configuration according to the modified example, the first shielding member 121 is disposed at a position where it does not interfere with the bracket 51 (outer wall portion 51c) during the process in which the table top 3 moves between the use position Q1 and the non-use position Q2. Furthermore, the top wall portion 201 may extend at an incline with respect to the vertical direction as long as it is spaced apart from the rear surface 3b of the top plate 3.

[0105] In addition, within the scope of the invention, the components in the above-described embodiments may be replaced with well-known components, and the above-described modified examples may be combined as appropriate. [Explanation of symbols]

[0106] 1, 1A, 1B: Display unit with tabletop 3: Tabletop 10: Support structure 11: Top plate unit 15a: Leg body 22: Column (tubular member) 51: Bracket 90: Connection bar (connection part) 91: Rear link bar (switching mechanism) 92: Front link bar (switching mechanism) 112:Operation unit 131: Base 131c:Drawer opening 132: Front standing piece (standing part) 132a1:Outward extension 132a2: Straight extension part 133: Lateral standing piece (standing part) 133a: outward extension 133b: Straight extension part 135: Mechanism space (space) F: Floor surface P1: Unable to drive P2: Ready to drive

Claims

1. A shielding member that is attached to an opening of a tubular member extending in a first direction, the opening being open to at least a first side in the first direction, and that closes the opening, A base covering the opening; a rising portion extending outward in the first direction from a peripheral edge portion of the base, The shielding member has a draw-out opening formed in the base that penetrates the base in the first direction and connects a space surrounded by the base and the upright portion to the inside of the tubular member.

2. The shielding member according to claim 1 , wherein at least a portion of the upright portion is located outside the tubular member in a second direction intersecting the first direction.

3. The standing portion is an outward extension portion that extends in a direction away from the base portion in the second direction as it moves away from the base portion in the first direction; The shielding member according to claim 2 , further comprising: a linear extension portion extending in the first direction from the outward extension portion.

4. The shielding member according to claim 1 , wherein the base portion and the standing portion are integrally formed from a resin material.

5. A support structure extending upward from the floor surface; A top plate supported by the support structure, The support structure includes: A leg body having a tubular leg column extending in the vertical direction; A display unit with a top plate comprising a shielding member as described in any one of claims 1 to 3, which is attached to the pedestal to close an upper end opening of the pedestal.

6. The support structure is provided at the lower end of the leg body and includes a running portion that enables the tabletop-equipped furniture to run on the floor surface, a switching mechanism that switches between a non-running state in which the traveling unit cannot run on the floor surface and a runnable state in which the traveling unit can run on the floor surface; An operation unit that is provided below the top plate and operates the switching mechanism; The display unit with a tabletop as described in claim 5, further comprising a linking portion that is inserted into the base column through the pull-out opening and connects the switching mechanism and the operating portion.

7. a top plate unit having the top plate and a bracket provided on a lower surface of the top plate, The tabletop unit is supported by the legs so as to be rotatable about an axis along the left-right direction between a use position in which the work surface of the tabletop faces upward and a non-use position in which the work surface faces a first side in the front-rear direction; The display unit with a top plate according to claim 5, wherein the shielding member is positioned so as not to interfere with the bracket.

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