Store fixture

Abstract

To provide a store fixture which is excellent in reliability while improving appearance.SOLUTION: A store fixture in one embodiment comprises: a support structure which stands from a floor surface; and a supported member supported from a lower side by the support structure. The support structure comprises: a base leg on which an open hole penetrating in a first direction crossing a vertical direction is formed; a travel part which is provided on the base leg and can travel on the floor surface; a grounding part which is provided on the base leg and can be grounded on the floor surface; and a lifting mechanism which moves the travel part to the base leg in the vertical direction, for switching a travel possible state where the travel part is grounded and a travel impossible state where the grounding part is grounded. The lifting mechanism has a shaft member inserted into the open hole. The support structure has a shield member for covering the open hole on the base leg, from outside of the first direction relative to the base leg.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to fixtures. [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 Documents 1 and 2 disclose a configuration that includes a lifting mechanism that raises and lowers the casters relative to the legs between a runnable state in which the casters are in contact with the floor surface (the legs are separated from the floor surface) and a runnable state in which the legs are in contact with the floor surface (the casters are separated from the floor surface). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3614408 [Patent Document 2] Publication number 02-040830 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional technology, the shaft of the lifting mechanism penetrates the leg body, and the support hole for supporting the shaft is exposed on the outer surface of the leg body, which may lead to a deterioration in the aesthetic appearance of the tabletop-equipped furniture and the shaft falling off.

[0005] The present invention provides a fixture that has an improved appearance and is highly reliable. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention employs the following aspects. (1) A fixture according to one embodiment of the present invention comprises a support structure that stands up from a floor surface and a supported member supported from below on the support structure, the support structure comprising a base leg having a through hole formed therethrough in a first direction that intersects the up-down direction, a running part provided on the base leg and capable of running on the floor surface, a ground contact part provided on the base leg and capable of contacting the floor surface, and a lifting mechanism that switches between a runnable state in which the running part is in contact with the ground and a non-runnable state in which the ground contact part is in contact with the ground by moving one of the running part and the ground contact part in the up-down direction relative to the base leg, the lifting mechanism comprising an axial member inserted into the internal space of the base leg through the through hole, and the support structure comprising a shielding member that covers the through hole in the base leg from the outside in the first direction relative to the base leg.

[0007] According to this aspect, by covering the through hole with the shielding member, it is possible to prevent the through hole from being visible from the outside. This improves the appearance of the support structure. In addition, the shielding member can restrict the movement of the shaft member in the first direction relative to the base leg. Therefore, it is possible to prevent the shaft member from falling out of the internal space of the base leg through the through hole, and a highly reliable fixture can be provided.

[0008] (2) In the fixture relating to aspect (1) above, it is desirable that the shaft member is supported on the inner peripheral edge of the through hole. According to this aspect, since the shaft member is supported within the through hole, it is easy to ensure the operational reliability of the lifting mechanism.

[0009] (3) In the fixture relating to the above aspect (2), it is preferable that the base leg has a pair of opposing walls that face each other in the first direction and have the through holes formed in each of the opposing walls at positions that overlap each other when viewed from the first direction, and the shaft member is bridged between the through holes formed in each of the pair of opposing walls. According to this aspect, since the shaft member is supported at both ends between the opposing walls, it is easy to ensure the operational reliability of the lifting mechanism.

[0010] (4) In the fixture relating to the above aspect (3), it is preferable that the base leg extends in a second direction intersecting the first direction when viewed from a top-bottom direction, and comprises a base body that is open on both sides in the second direction through a pair of opposing walls, a first closing portion covering a first side opening in the second direction of the base body from a second side in the second direction, and a second closing portion covering a second side opening in the second direction of the base body from the first side in the second direction. According to this aspect, by using a base body that is open on both sides in the second direction, the base body can be formed by a simple method such as press molding. This allows for cost reduction. In addition, by covering the openings at both ends of the base body with the blocking parts, it is possible to prevent the lifting mechanism from being exposed to the outside through the openings at both ends of the base body.

[0011] (5) In the fixture relating to the above aspect (4), it is preferable that the shielding member is formed larger than the through hole when viewed from the first direction and extends in the second direction over the entire length of the base body. According to this aspect, since the shielding member is provided over the entire length of the base body, the position of the through hole is difficult to identify, which improves the appearance and prevents unauthorized access to the through hole.

[0012] (6) In the fixture according to any one of the above aspects (1) to (5), it is desirable that the shielding member is configured to be elastically deformable in at least a first direction. According to this aspect, the shielding member can also be given a cushioning function in the event of contact with other fixtures or the building structure. In this case, the base leg can be prevented from coming into contact with other fixtures or the building structure, and the base leg itself can be prevented from being damaged. In addition, when the fixture comes into contact with other fixtures or the building structure, the impact transmitted to the fixture can be mitigated, improving the durability of the fixture.

[0013] (7) In the fixture according to any one of the above aspects (1) to (6), it is preferable that the supported member is a tabletop having an upwardly facing work surface. According to this aspect, it is possible to provide a display unit with a tabletop that has an improved appearance and is highly reliable. Effect of the Invention

[0014] According to each of the above aspects, it is possible to provide fixtures that have an improved appearance and are highly reliable. [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. 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 explanation, 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. Therefore, with both left and right ends supported by the inner peripheral edges of the corresponding insertion holes 23d1, 23e1, the rear connecting shaft 100 is bridged between the left side wall 23d and the right side wall 23e of the base main body 23. As a result, the portion of the rear connecting shaft 100 located between the left side wall 23d and the right side wall 23e is disposed as a whole in the internal space of the base main body 23 (the space surrounded by the left side wall 23d and the right side wall 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. Therefore, the front connecting shaft 101 is bridged between the left side wall 23d and the right side wall 23e of the base main body 23, with both left and right ends supported by the inner peripheral edges of the corresponding insertion holes 23d2, 23e2. As a result, the portion of the front connecting shaft 101 located between the left side wall 23d and the right side wall 23e is disposed as a whole in the internal space of the base main body 23 (the space surrounded by the left side wall 23d and the right side wall 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. In the present invention, the left buffer section 30 and the right buffer section 31 function as shielding members.

[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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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 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 pillar 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.

[0073] 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).

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] <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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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. In addition, in the process of the lower surface of the caster 2 coming into contact with the installation surface F, the front link bar 92 and the rear link bar 91 try to rotate upward against the weight of the tabletop 3 and part of the support structure 10 (leg column 22). However, since the left and right ends of the front connecting shaft 101 and the rear connecting shaft 100, which are the rotation axis, are supported by the left wall portion 23d and the right wall portion 23e of the base body 23, respectively, the position of the rotation axis relative to the horizontal direction does not deviate. Therefore, the front link bar 92 and the rear link bar 91 rotate upward stably. In addition, the application of an unbalanced load to the front link bar 92 and the rear link bar 91 is also suppressed.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] When returning the tabletop-equipped furniture 1 to its initial position, the reverse operation to the above 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 returns the tabletop unit 11 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] Thus, the tabletop-equipped fixture (furniture) 1 of this embodiment includes a support structure 10 that stands up from a floor surface F, and a tabletop (supported member) 3 supported by the support structure 10. The support structure 10 includes a base leg 21 in which insertion holes (through holes) 23d1, 23d2, 23e1, 23e2 that penetrate in the left-right direction (first direction) are formed, a caster (running portion) 2 provided on the base leg 21, a ground contact portion (adjuster 26 and rear cap 25) provided on the base leg 21, and a caster drive unit (lifting mechanism) 73 that moves the caster (one member) 2 in the up-down direction relative to the base leg 21. The caster drive unit 73 has connecting shafts (shaft members) 100, 101 inserted into the through holes, and the support structure 10 has buffer parts (shielding members) 30, 31 that cover the insertion holes 23d1, 23d2, 23e1, 23e2 of the base leg 21 from the outside in the left-right direction relative to the base leg 21. According to this configuration, by covering the insertion holes 23d1, 23d2, 23e1, 23e2 with the buffer parts 30, 31, it is possible to prevent the insertion holes from being visible from the outside. This improves the appearance of the support structure 10. In addition, the buffer parts 30, 31 can regulate the left-right movement of the connecting shafts 100, 101 relative to the base leg 21. Therefore, it is possible to prevent the connecting shafts 100, 101 from falling out of the internal space of the base leg 21 through the insertion holes, and it is possible to provide a tabletop-equipped furniture unit 1 with excellent reliability.

[0094] In the tabletop-equipped fixture 1 of this embodiment, a portion of the connecting shafts 100, 101 is configured to be supported on the inner periphery of the insertion hole. According to this configuration, the connecting shafts 100, 101 are supported within the insertion holes, making it easier to ensure the operational reliability of the caster drive unit 73.

[0095] In the tabletop-equipped furniture 1 of this embodiment, the base leg 21 has a pair of side walls (opposing walls) 23d, 23e that face each other in the left-right direction and have insertion holes 23d1, 23e1 and insertion holes 23d2, 23e2 that overlap each other when viewed from the left-right direction. The connecting shafts 100, 101 are bridged between the insertion holes 23d1, 23e1 and the insertion holes 23d2, 23e2 formed in the pair of side walls 23d, 23e, respectively. According to this configuration, each connecting shaft 100, 101 is supported at both ends between the opposing side wall portions 23d, 23e, making it easier to ensure the operational reliability of the caster drive unit 73.

[0096] In the present embodiment of the tabletop-equipped display fixture 1, the base leg 21 is configured to include a base body 23 that is open on both sides in the front-to-rear direction (second direction), a front cap (first closing part) 24 that covers the front opening (first side opening) of the base body 23, and a rear cap (second closing part) 25 that covers the rear opening (second side opening) of the base body 23. According to this configuration, by using the base body 23 that is open on both sides in the front-rear direction, the base body 23 can be formed by a simple method such as press molding. This allows for cost reduction. In addition, by covering the openings at both ends of the base body 23 with the caps 24, 25, respectively, the caster drive unit 73 can be prevented from being exposed to the outside through the openings at both ends of the base body 23.

[0097] In the tabletop-equipped fixture 1 of this embodiment, the buffer portions 30, 31 are formed larger than the insertion holes 23d1, 23d2, 23e1, 23e2, and extend in the front-rear direction over the entire length of the base body 23. According to this configuration, the buffer parts 30, 31 are provided over the entire length of the base body 23, making it difficult to identify the position of the insertion hole. Therefore, the appearance can be improved and unauthorized access to the insertion hole can be suppressed.

[0098] In the tabletop-equipped fixture 1 of this embodiment, the buffer sections 30, 31 are configured to be elastically deformable at least in the left-right direction. This configuration prevents the base leg 21 from coming into contact with other fixtures or the architectural structure, and prevents damage to the base leg 21 itself. In addition, it is possible to reduce the impact transmitted to the tabletop-equipped fixture 1 when it comes into contact with other fixtures or the architectural structure, thereby improving the durability of the tabletop-equipped fixture 1.

[0099] In the furniture with a tabletop 1 of this embodiment, the supported member is a tabletop 3 having a work surface 3a. This configuration makes it possible to provide a highly reliable display unit 1 with a tabletop while improving the appearance.

[0100] (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-traveling state P1 and the travelling state P2, but the present invention is not limited to this configuration. The caster unit 15b may be configured to move up and down relative to the base leg 21 by gears or the like. In this case, the shaft member supporting the gear is supported by the base leg 21. In the above embodiment, the connecting shafts 100 and 101 support the front link bar 92 and the rear link bar 91 that rotate relative to the base body 23, but the present invention is not limited to this configuration. The connecting shafts 100 and 101 may directly support the caster stay 36. For example, a configuration in which the connecting shafts 100 and 101 are slidably engaged with an elongated insertion hole having a vertical component formed in the caster stay 36, so that the caster stay 36 is displaced along the trajectory of the insertion hole, may be adopted.

[0101] In the above embodiment, the caster unit 15b moves up and down relative to the base body 23 to switch between the non-traveling state P1 and the travelling state P2, but the present invention is not limited to this configuration. The base body 23 may be configured to switch between the non-traveling state P1 and the travelling state P2 by raising and lowering a ground contact portion such as the adjuster 26 relative to the base body 23.

[0102] In the above embodiment, the connecting shafts 100, 101 are supported at both ends by the left side wall portion 23d and the right side wall portion 23e of the base body 23, but the present invention is not limited to this configuration. The connecting shafts 100, 101 may be supported only by one of the left side wall portion 23d and the right side wall portion 23e. In the above embodiment, the connecting shafts 100, 101 are directly supported by the inner periphery of the insertion hole, but the present invention is not limited to this configuration. The connecting shafts 100, 101 may be disposed in the internal space of the base body 23 through the insertion hole. In this case, although the connecting shafts 100, 101 are disposed in the internal space of the base body 23 through the insertion hole, they may be supported by a shaft support member separately provided in the internal space of the base body 23. In the above embodiment, the base leg 21 is provided with the base body 23 and the caps 24, 25, but the present invention is not limited to this configuration. The base leg 21 may be integrally formed.

[0103] 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. The supported member may also be a chair seat, etc. In the above embodiment, the tabletop-equipped furniture 1 is configured to include 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.

[0104] In the above embodiment, the shielding member is provided over the entire length of the base body 23 in the front-rear direction, but the present invention is not limited to this configuration. It is sufficient that the shielding member covers at least the insertion hole. In the above-described embodiment, the shielding members function as the buffer sections 30 and 31, but the present invention is not limited to this configuration. The shielding members may be made of the same material as the base legs 21.

[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: Display unit with tabletop (display unit) 2: Caster (running part) 3: Top plate (supported member) 3a: Working surface 10: Support structure 21: Base leg 23: Base body 23d: Left side wall (opposing wall) 23e: Right side wall (opposing wall) 24: Front cap (first closure part) 25: Rear cap (grounding part, second closing part) 26: Adjuster (grounding part) 30: Left side buffer part (shielding member) 31: Right buffer section (shielding member) 73: Caster drive unit (lifting mechanism) 100: Rear connecting shaft (shaft member) 101: Front connecting shaft (shaft member) F: Floor surface P1: Unable to drive P2: Ready to drive

Claims

1. A support structure that stands upright relative to a floor surface; A supported member supported from below by the support structure, The support structure includes: A base leg having a through hole formed therein, the through hole penetrating in a first direction intersecting the vertical direction; A running part provided on the base leg and capable of running on the floor surface; a grounding portion provided on the base leg and capable of being grounded on the floor surface; and a lifting mechanism that switches between a runnable state in which the running unit is grounded and a runnable state in which the grounding unit is grounded by moving one of the running unit and the grounding unit in a vertical direction relative to the base leg, The lifting mechanism includes a shaft member that is inserted into an internal space of the base leg through the through hole, The support structure is a fixture having a shielding member that covers the through hole of the base leg from the outside in the first direction relative to the base leg.

2. The fixture according to claim 1 , wherein a portion of the shaft member is supported on an inner peripheral edge of the through hole.

3. the base leg includes a pair of opposing walls that face each other in the first direction and have the through holes formed in positions that overlap each other when viewed from the first direction, The fixture according to claim 2 , wherein the shaft member is bridged between the through holes formed in each of the pair of opposing walls.

4. The base leg is a base body extending in a second direction intersecting the first direction when viewed from the top-bottom direction and open on both sides in the second direction between the pair of opposing walls; a first closing portion that covers a first side opening in the second direction of the base body from a first side in the second direction; The fixture according to claim 3 , further comprising a second closing portion that covers a second side opening in the second direction of the base body from the second side in the second direction.

5. The fixture according to claim 4 , wherein the shielding member is formed larger than the through hole when viewed from the first direction and extends in the second direction over the entire length of the base body.

6. The fixture described in any one of claims 1 to 5, wherein the shielding member is configured to be elastically deformable in at least a first direction.

7. The fixture according to any one of claims 1 to 5, wherein the supported member is a tabletop having an upwardly facing work surface.

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