Chair

Abstract

To provide a chair capable of suppressing interference with surroundings and improving accessibility of a user to a seating surface.SOLUTION: A chair includes: a base member 3 which has a seating surface 101 facing upward and an upward surface 102 that is formed sideways of the seating surface 101 and faces upward, and is installed on a floor surface F; a table top plate 6 which is arranged above the base member 3 at intervals and has a top surface 6f facing upward; and a support member 5 which extends upward from the upward surface 102 and supports the table top plate 6 around an axis line along the vertical direction. The table top plate 6 is displaceable around the axis line between a first state P1 that at least a part of the table top plate 6 overlaps the upward surface 102 in a planar view and the entire table top plate 6 overlaps the base member 3 in a planar view and a second state that the table top plate 6 is positioned nearer the seating surface 101 side than in the first state P1.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a chair.

Background Art

[0002] For example, Patent Document 1 discloses a chair having a seat portion, a table support portion disposed above the seat portion, a table portion disposed above the table support portion, and a connecting portion that rotatably connects the table portion to the table support portion. With such a configuration, the table portion can be rotated between a use state in which it is located in front of a user seated on the seat portion and an open state in which it rotates around the axis of the table support portion and the seating space of the seat portion is open to the front.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the configuration disclosed in Patent Document 1, a part of the table portion protrudes forward from the seat portion in a plan view in either the use state or the open state. For this reason, it may interfere with the surroundings, such as obstructing passage around the chair. Also, since the table portion is located in front of a user seated on the seat portion in both the use state and the open state, it may also interfere with the user's access to the seat portion. An object of the present invention is to provide a chair that can suppress interference with the surroundings and improve the accessibility of a user to the seating surface.

Means for Solving the Problems

[0005] In order to achieve the above object, a chair according to an aspect of the present invention has a seating surface facing upward and an upward surface formed on the side of the seating surface and facing upward, and is installed on the floor surface. A base member, a table top plate disposed at an interval above the base member and having a top surface facing upward, and a support member extending upward from the upward surface and supporting the table top plate so as to be rotatable about an axis along the vertical direction. The table top plate is displaceable about the axis between a first state in which at least a part of the table top plate overlaps the upward surface in plan view and the entire table top plate overlaps the base member in plan view, and a second state in which the table top plate is located closer to the seating surface side than the first state.

[0006] Thus, in the first state, since the entire table top plate overlaps the base member in plan view, the table top plate does not protrude outward from the base member, and interference with the surroundings can be avoided. Also, in the first state, at least a part of the table top plate overlaps the upward surface in plan view and is located on the side of the seating surface. Therefore, the accessibility of the user to the seating surface is enhanced. Also, in the first state, articles such as the user's belongings can be placed on the top surface of the table top plate. At that time, since the table top plate is located on the side of the seating surface, it is possible to suppress the articles placed on the top surface from interfering with the user sitting on the seating surface. Also, in the second state, since at least a part of the table top plate is located closer to the seating surface side than in the first state, it overlaps the seating surface in plan view. As a result, at least a part of the table top plate is located in front of the user as viewed from the user sitting on the seating surface. Therefore, in the second state, it is easy for the user to perform various operations on the top surface of the table top plate.

[0007] In the chair according to an aspect of the present invention, in the second state, at least a part of the table top plate may protrude forward from the base member. According to this configuration, in the second state, at least a part of the table top projects forward from the base member, so that a sufficient distance in the front-rear direction can be ensured between the user seated on the seating surface and the table top. Therefore, interference between the user and the table top can be suppressed, and the positional relationship between the user and the table top becomes appropriate. Further, by projecting at least a part of the table top forward, a wider top surface of the table top can be ensured, and the workability of the user on the top surface can be improved.

[0008] In the chair according to one aspect of the present invention, the table top may have a linear top surface side portion along the side of the base member in the first state. According to this configuration, in the first state, the side portion of the table top along the side of the base member can suppress the table top from protruding laterally.

[0009] In the chair according to one aspect of the present invention, the table top may be arranged to be inclined forward toward the seating surface side in the width direction of the base member in the second state. According to this configuration, in the second state, the table top is inclined forward toward the seating surface side in the width direction. That is, as viewed from the user seated on the seating surface, since the table top extends obliquely forward, even in the second state, the accessibility of the user to the seating surface can be improved.

[0010] In the chair according to one aspect of the present invention, a regulating mechanism for regulating the rotation range of the table top around the support member may be further provided. According to this configuration, by providing a regulating mechanism for regulating the rotation range of the table top, it is possible to suppress the table top from rotating excessively and interfering with articles and people around the chair.

[0011] In the chair according to one aspect of the present invention, a panel member rising upward may be provided at least on the side of the base member, and the regulating member may regulate the rotation of the table top from the first state toward the panel member side. According to this configuration, by providing the panel member at least on the side of the base member, the line of sight from the surroundings to the user sitting on the seating surface is blocked, and the privacy of the user is enhanced. Further, since the rotation of the table top from the first state toward the panel member side is restricted by the restricting member, interference between the table top and the panel member can be suppressed.

[0012] In the chair according to one aspect of the present invention, the base member may include a plate-like member having the upward-facing surface on the side of the seating surface, and in the first state, the table top may be disposed above the plate-like member. According to this configuration, by providing the plate-like member on the side of the seating surface, the seating surface and the upward-facing surface can be clearly partitioned. Thereby, it is possible to suppress the user sitting on the seating surface from interfering with the table top in the first state. Further, a space is formed between the table top and the plate-like member that are vertically positioned relative to each other in the first state, and an article placed on the upward-facing surface can be stored in the space between the plate-like member and the table top.

[0013] In the chair according to one aspect of the present invention, the table top may be long in the front-rear direction of the base member and short in the width direction of the base member in the first state. According to this configuration, since the table top is long in the front-rear direction of the base member and short in the width direction of the base member in the first state, in the first state, the table top can be efficiently accommodated within the range overlapping the base member. Further, in the second state, since the table top is long in the width direction of the base member, an operation space on the top surface can be efficiently secured.

[0014] In the chair according to one aspect of the present invention, the base member may further include a backrest that rises upward from the base member and has a backrest surface facing forward in a part of the width direction of the base member, and the seating surface may be formed to include the front of the backrest. According to this configuration, by providing the backrest, the user can lean part of their body weight on the backrest and easily assume a stable posture. Also, the backrest can easily guide the seating position of the user on the seating surface to a position in front of the backrest. Therefore, the seating position of the user relative to the tabletop can be guided to an appropriate position relative to the tabletop.

[0015] In the chair according to one aspect of the present invention, the backrest may be arranged on the seating surface side in the width direction relative to the tabletop in the first state, and may be arranged so as to overlap at least a part of the tabletop in the width direction in the second state. According to this configuration, since the backrest is arranged on the seating surface side in the width direction relative to the tabletop in the first state, interference between the user sitting on the seating surface in front of the backrest and the tabletop is suppressed. Also, since the backrest is arranged so as to overlap at least a part of the tabletop in the width direction in the second state, at least a part of the tabletop will be positioned in front of the user sitting on the seating surface in front of the backrest. Thereby, when the user performs work on the top surface of the tabletop, workability is enhanced.

Effects of the Invention

[0016] According to one aspect of the present invention, interference with the surroundings can be suppressed and the accessibility of the user to the seating surface can be enhanced.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the chair according to the present invention will now be described with reference to the accompanying drawings. However, the present invention is not limited to this preferred embodiment.

[0019] Fig. 1 is a perspective view showing the overall configuration of a chair 1 according to an embodiment of the present invention. Fig. 2 is a perspective view showing a chair body 2 of the chair 1. Fig. 3 is a front view of the chair body 2. Fig. 4 is a plan view of the chair body 2. As shown in FIG. 1, the chair 1 includes a chair body 2 and a panel member 9. As shown in FIGS. 2 to 4, the chair body 2 mainly includes a base member 3, a support member 5, a table top 6, a backrest 7, and a wiring connection portion 8.

[0020] The base member 3 is installed on the floor surface F. The base member 3 has a seating surface 101 facing upward and an upward-facing surface 102 formed on the side of the seating surface 101 and facing upward. In the present embodiment, the base member 3 is rectangular in plan view, and the seating surface 101 and the upward-facing surface 102 are arranged along the long side direction of the base member 3. In the following description, the long side direction of the base member 3 in which the seating surface 101 and the upward-facing surface 102 are arranged is defined as the width direction Dw, and the direction orthogonal to the width direction Dw in the horizontal plane is defined as the front-rear direction Dfr. Note that the plan view shape of the base member 3 may be circular, elliptical, polygonal, or the like.

[0021] The base member 3 includes a support structure 30, a seating member 40, and a plate-like member 45. As shown in FIGS. 2 and 3, the support structure 30 is installed on the floor surface F. The support structure 30 has a base portion 31 and support legs 32.

[0022] FIG. 5 is a view showing the configuration of the base portion 31 of the chair body 2, and is a cross-sectional view taken along the line A-A in FIG. 4. The base portion 31 is generally in the shape of a substantially rectangular parallelepiped box and is constituted by, for example, panel materials made of a wood-based material. As shown in FIG. 5, the base portion 31 includes a bottom plate 33, side plates 34, and an upper plate 35. The bottom plate 33 is disposed at a distance above the floor surface F. The bottom plate 33 is provided along a horizontal plane intersecting the vertical direction Dv. The bottom plate 33 is rectangular in plan view. The side plates 34 are provided along the four sides of the bottom plate 33. The side plates 34 stand up upward from the four sides of the bottom plate 33 respectively. The upper plate 35 is provided on the side plates 34. The upper plate 35 is disposed at a distance above the bottom plate 33. The upper plate 35 is provided along a horizontal plane and forms a base upper surface 31t facing upward.

[0023] The support legs 32 extend downward from the base portion 31. The support legs 32 are provided, for example, at the four corners of the base portion 31. By the support legs 32 standing on the floor surface F, the base portion 31 is supported above the floor surface F. An adjuster for height adjustment and a caster roller (both not shown) that can roll on the floor surface F may be provided at the lower ends of the support legs 32.

[0024] Such a support structure 30 includes a first support portion 36, a second support portion 37, and a partition wall 38. The first support portion 36 is provided on one side in the width direction Dw on the upper plate 35 of the base portion 31. The first support portion 36 is formed as a part of the upper plate 35. The first support portion 36 has a first support surface 36f. The first support surface 36f is formed by a part of the upper surface 31t of the base portion and faces upward. The first support surface 36f supports the seating member 40 from below.

[0025] The second support portion 37 is provided side by side on the other side in the width direction Dw (one side in the horizontal direction) with respect to the first support portion 36 on the upper plate 35 of the base portion 31. The second support portion 37 has a second support surface 37f located below the seating surface 101. The second support surface 37f is formed by the upper surface of the plate body 37d. In a portion surrounding the outer periphery of the second support surface 37f, the side plate 34 extends upward from the upper surface 31t of the base portion. The plate body 37d is supported from below by the upper end of a raised portion member 37k provided so as to rise upward from the upper surface 31t of the base portion and the upper end of the side plate 34. Thereby, the plate body 37d is disposed above the upper surface 31t of the base portion. The second support surface 37f is formed by the upper surface of the plate body 37d. The second support surface 37f (plate body 37d) is provided at a position different from the portion constituting the first support surface 36f in the width direction Dw on the upper surface 31t of the base portion. In this way, the first support surface 36f is located below the second support surface 37f.

[0026] The seating member 40 is placed on the first support surface 36f. The seating member 40 is provided so as to cover the entire first support surface 36f. The seating member 40 has a predetermined thickness in the vertical direction Dv. The upper surface of the seating member 40 is located above the second support surface 37f in the vertical direction Dv. The seating member 40 is made of a material such as sponge and is elastically deformable. As shown in FIG. 2, the front end portion 40a of the seating member 40 is curved obliquely downward toward the front.

[0027] As shown in FIG. 5, the partition wall 38 is provided between the first support portion 36 and the second support portion 37 in the width direction Dw. The partition wall 38 protrudes above the first support surface 36f and the second support surface 37f. The upper end of the partition wall 38 is provided at substantially the same height as the upper surface of the seating member 40. The end portion 40s on the second support portion 37 side of the seating member 40 abuts against the partition wall 38. FIG. 6 is a perspective view showing the second support surface 37f and the step portion D provided on the base portion 31. At least the upper surface of the seating member 40 and the partition wall 38 are covered with a skin material 39 made of cloth, a vinyl-based material, or the like. In the present embodiment, the skin material 39 integrally covers the entire side surface of the base portion 31 in addition to the upper surface of the seating member and the partition wall 38. As a result, as shown in FIGS. 5 and 6, a step portion D covered with the skin material 39 together with the seating member 40 is provided on the second support surface 37f side with respect to the first support surface 36f. The seating surface 101 is formed by covering the upper surface of the seating member 40 with the skin material 39. The edge 39e of the skin material 39 is located on the second support surface 37f and is covered with a plate-like member 45 (see FIG. 7).

[0028] As shown in FIGS. 3 and 5, the plate-like member 45 is placed on the second support surface 37f. The plate-like member 45 is provided on the side of the seating member 40. The plate-like member 45 is provided along a horizontal plane, and its upper surface forms an upward surface 102. The upward surface 102 and the seating surface 101 are provided at substantially the same height and are continuous in the width direction Dw. The upward surface 102 and the seating surface 101 may have different heights in the vertical direction Dv, but the height difference between the upward surface 102 and the seating surface 101 is preferably, for example, within 10 cm.

[0029] The plate-like member 45 is formed of a material different from that of the seating member 40 and the skin material 39. The plate-like member 45 uses the upward surface 102 as an article placement surface, and is formed of a material harder than the seating member 40 that constitutes the seating surface 101, such as a wood-based material, a resin-based material, a metal material, etc. In addition, in the present embodiment, since the plate-like member 45 functions as the opening surface of the wiring connection portion 8, among the above materials, it is more preferable to use a material having insulating properties. The plate-like member 45 covers the entire second support surface 37f. In the present embodiment, "plate-like" means a shape in which the minimum dimension in the width direction Dw and the minimum dimension in the front-rear direction Dfr are larger than the maximum dimension in the vertical direction Dv. Therefore, the upward surface 102 of the plate-like member 45 is not limited to being a flat surface, and may have a stepped surface or a curved surface. Further, the upward surface 102 is not limited to being flush with the seating surface 101.

[0030] As shown in FIG. 3, the support member 5 extends upward from the upward surface 102. The support member 5 supports the table top plate 6 described later. The support member 5 supports the table top plate 6 so as to be rotatable about an axis along the vertical direction Dv. The support member 5 is disposed within the range of the base member 3 in a plan view. That is, the support member 5 does not protrude outward in the horizontal direction from the base member 3. The support member 5 is disposed on the upward surface 102. In the present embodiment, the support member 5 is disposed, for example, at the front end of the plate-like member 45 that forms the upward surface 102. The support member 5 is disposed, for example, at the central portion in the width direction Dw of the plate-like member 45.

[0031] The support member 5 penetrates the plate-like member 45 in the vertical direction Dv and extends to the lower side of the plate-like member 45. A lower plate 51 is provided at the lower end of the support member 5. The lower plate 51 is fixed to the lower surface of the plate-like member 45 by bolts (not shown) or the like. Since the plate-like member 45 is formed of a hard material, the lower plate 51 and the support member 5 are firmly supported by the plate-like member 45.

[0032] FIG. 7 is a perspective view showing the support member 5 and the regulation mechanism 55 provided on the chair body 2. As shown in FIG. 7, a stopper member 56 that constitutes a regulation mechanism 55 described later is provided at the upper end of the support member 5. The stopper member 56 has an outer diameter larger than that of the upper end of the support member 5. In plan view, the stopper member 56 has, for example, a teardrop shape, and has a convex portion 56t that protrudes radially outward in a part of the circumferential direction around the axis of the support member 5.

[0033] As shown in FIGS. 2 and 3, the table top plate 6 is disposed above the base member 3 with a space therebetween. The table top plate 6 is provided along a horizontal plane. The table top plate 6 has a top surface 6f facing upward. The table top plate 6 is supported by the support member 5. The support member 5 supports one end portion 6a of the table top plate 6. In the present embodiment, the table top plate 6 has a rectangular shape in plan view. The support member 5 supports one end portion 6a on one side in the long side direction of the table top plate 6.

[0034] As shown in FIG. 3, a table side plate 61 is fixed to the lower surface of the table top plate 6. As shown in FIGS. 3 and 6, a cylindrical portion 61s extending downward is integrally provided on the table side plate 61. The upper end portion of the support member 5 is inserted into the inside of the cylindrical portion 61s from below. A slight clearance is provided in the radial direction between the inner peripheral surface of the cylindrical portion 61s and the outer peripheral surface of the upper end portion of the support member 5. The lower end of the cylindrical portion 61s is supported on a stopper ring 53 (see FIG. 7) provided on the outer peripheral surface of the support member 5. Thereby, the table top plate 6 is rotatably supported around an axis extending in the vertical direction Dv at the upper end portion of the support member 5.

[0035] FIG. 8 is a view showing a state in which the table top plate 6 of the chair body 2 rotates. FIG. 9 is a plan view when the table top plate 6 is in the second state P2. As shown in FIGS. 4, 8, and 9, the table top plate 6 is displaceable between a first state P1 and a second state P2 by rotating around the axis of the support member 5. As shown in FIGS. 4 and 8, in the first state P1, the entire table top 6 overlaps the base member 3 in plan view. In the first state P1, at least a part of the table top 6 overlaps the upward surface 102 in plan view. In the first state P1, the table top 6 is located on the side of the seating surface 101. In the first state P1, the table top 6 is located vertically above the plate-like member 45 that forms the upward surface 102. In this state, as shown in FIGS. 2 and 3, a space S capable of storing articles or the like placed on the upward surface 102 is formed between the plate-like member 45 and the table top 6 located above it.

[0036] As shown in FIG. 4, in the first state P1, the rectangular table top 6 in plan view is arranged with its long side direction along the front-rear direction Dfr. That is, the table top 6 is long in the front-rear direction Dfr of the base member 3 and short in the width direction Dw of the base member 3 in the first state P1. In the first state P1, the linear table top side portion 6s along the long side direction of the table top 6 is arranged along the side plate 34 that forms the side of the base member 3 and is parallel to the side plate 34. In the first state P1, the other end portion 6b of the table top 6 opposite to the one end portion 6a supported by the support member 5 is behind the center of the plate-like member 45 (upward surface 102) in the front-rear direction Dfr and in front of the rear end 45r of the plate-like member 45. In the first state P1, the other end portion 6b of the table top 6 overlaps the backrest 7 in the front-rear direction when viewed from the width direction Dw. In the first state P1, the opposite side portion 6p of the table top 6 located on the side opposite to the table top side portion 6s in the short side direction is on the seating surface 101 side of the boundary between the seating surface 101 and the upward surface 102 and is on the upward surface 102 side of the backrest 7. That is, the table top 6 straddles the boundary at least in the portion located on the opposite side portion 6p side rather than the central portion (connection portion of the cylindrical portion 61s) in the short side direction. However, in the first state P1, the entire table top 6 may overlap the upward surface 102 in plan view.

[0037] As shown in FIG. 9, in the second state P2, at least a part of the table top plate 6 is located closer to the seating surface 101 side than in the first state P1. In the second state P2, at least a part of the table top plate 6 overlaps the seating surface 101 in plan view. In the second state P2, the table top plate 6 is disposed to be inclined forward toward the seating surface 101 side in the width direction Dw of the base member 3. In the second state P2, at least a part of the table top plate 6 protrudes forward from the base member 3. In the illustrated example, in the second state P2, the entire opposite side portion 6p protrudes forward from the base member 3, and the top plate side portion 6s does not protrude from the base member 3. In this state, the table top plate 6 is located forward or obliquely forward as viewed from the user seated on the seating surface 101. Note that in the present embodiment, the angle (position) around the axis of the table top plate 6 in the second state P2 is not limited. The angle (position) around the axis of the table top plate 6 is arbitrarily set according to the preference of the user.

[0038] FIG. 10 is a plan view when the table top plate 6 is in the third state P3. As shown in FIGS. 8 and 10, in the present embodiment, the table top plate 6 can also be set to the third state P3. In the third state P3, the table top plate 6 has a larger rotation angle from the first state P1 than in the second state P2. In the illustrated example, in the third state P3, in addition to the entire opposite side portion 6p, a part of the top plate side portion 6s also protrudes forward from the base member 3.

[0039] Here, as shown in FIG. 7, the upper end portion of the support member 5 passes through the table side plate 61 and extends upward. The stopper member 56 is disposed above the table side plate 61. On the upper surface of the table-side plate 61, protrusions 63 and 64 that protrude upward are provided. The protrusions 63 and 64 constitute the regulating mechanism 55. On the lower surface of the table top plate 6, a stopper member 56 and a counterbore 66 that recesses upward are formed so as to allow the protrusions 63 and 64 to escape. In such a regulating mechanism 55 including the stopper member 56 and the protrusions 63 and 64, when the table-side plate 61 rotates around the axis of the support member 5 integrally with the table top plate 6, either of the protrusions 63 and 64 abuts against the convex portion 56t of the stopper member 56, thereby restricting the rotation range of the table top plate 6. In the present embodiment, the regulating mechanism 55 restricts the rotation range of the table top plate 6 between the first state P1 and the third state P3. Note that the table top plate 6 may be configured to be rotatable only between the first state P1 and the second state P2. In this case, the regulating mechanism 55 restricts the rotation range of the table top plate 6 between the first state P1 and the second state P2.

[0040] As shown in FIGS. 2 and 4, the backrest 7 is provided at the rear end portion of the base member 3. The backrest 7 extends upward from the seating member 40. The backrest 7 has a backrest surface 7f facing forward. The backrest 7 is provided in a part of the width direction Dw of the base portion 31. The backrest 7 is provided in a part of the width direction Dw of the seating member 40. The seating surface 101 is formed to include the front of the backrest 7. Since the user leans against the backrest 7, the user selects his or her position in the width direction Dw with reference to the backrest 7. Thereby, the backrest 7 has a function of guiding the seating position of the user on the seating surface 101 to the region in front of the backrest 7.

[0041] The backrest 7 is disposed closer to the seating surface 101 side than the table top plate 6 in the width direction Dw in the first state P1. Thereby, it is possible to prevent a user seated at a position in front of the backrest 7 on the seating surface 101 from interfering with the table top plate 6 in the first state P1.

[0042] Further, as shown in FIG. 10, the backrest 7 is arranged so as to overlap at least a part of the table top plate 6 in the width direction Dw in the second state P2. Thereby, when viewed from a user sitting at a position in front of the backrest 7 on the seating surface 101, the table top plate 6 is arranged forward or obliquely forward, facilitating work or the like on the top surface 6f. In the illustrated example, in the table top plate 6, the region on the other end portion 6b side with respect to the center in the top plate side portion 6s overlaps the backrest 7 in the width direction Dw.

[0043] As shown in FIG. 7, the wiring connection portion 8 is provided on the upward-facing surface 102. The wiring connection portion 8 is provided on the plate-shaped member 45. The wiring connection portion 8 is housed in a recess 48 formed in the second support portion 37 of the base portion 31. The wiring connection portion 8 has a connection port 8a that opens upward. The connection port 8a penetrates the plate-shaped member 45 and is exposed on the upper surface of the plate-shaped member 45. A user can connect the wiring of an electronic device or the like placed on the table top plate 6 to the connection port 8a. Examples of the wiring connected to the connection port 8a include power supply wiring, communication signal lines, and wiring connected to various connectors.

[0044] As shown in FIG. 4, the wiring connection portion 8 is arranged so as to overlap the table top plate 6 in the first state P1 in a plan view. Therefore, in the first state P1, the wiring connection portion 8 is covered from above by the table top plate 6. Thereby, when a beverage or the like placed by the user on the top surface 6f spills in the first state P1, it is possible to suppress the liquid from directly falling onto the wiring connection portion 8. Further, as shown in FIG. 9, the wiring connection portion 8 is arranged offset laterally with respect to the table top plate 6 in the second state P2 in a plan view. Therefore, in the second state P2, the wiring connection portion 8 is not covered from above by the table top plate 6 and is exposed upward. Thereby, the wiring to be connected to an electronic device or the like placed and used on the top surface 6f can be easily inserted into and removed from the wiring connection portion 8.

[0045] In the present embodiment, the wiring connection portion 8 is disposed at an end portion on the side separated from the seating surface 101 in the width direction Dw on the upward surface 102 (plate-like member 45). Thereby, a space on the upward surface 102 can be widely secured and effectively utilized between the wiring connection portion 8 and the seating surface 101. Further, since the wiring is connected to the wiring connection portion 8 at the end portion of the upward surface 102, the wiring is less likely to interfere with the user sitting on the seating surface 101.

[0046] As described above, the chair body 2 may be configured such that, as shown in FIG. 2, the support structure 30, the wiring connection portion 8, the seating member 40, the skin material 39, and the backrest 7 constitute the chair unit 201, and the plate-like member 45, the support member 5, and the table top 6 constitute the table unit 202. When assembling the chair body 2, if the chair unit 201 and the table unit 202 are assembled separately and then the table unit 202 is assembled to the chair unit 201, the assembly work can be performed efficiently.

[0047] As shown in FIG. 1, the panel member 9 includes a back plate portion 91 located behind the base member 3 and side plate portions 92 located on both sides of the base member 3. The panel member 9 is fixed to the base portion 31 of the base member 3 by a mounting bracket or the like (not shown). The back plate portion 91 and the side plate portions 92 rise upward from the base member 3. The panel member 9 is provided so as to surround the space above the upper surface 3t of the base member 3 from the rear and both sides.

[0048] Thus, in the present embodiment, the table top 6 is configured to be displaceable about an axis between a first state P1 in which the entire table top 6 overlaps the base member 3 in plan view and a second state P2 in which at least a part thereof is located closer to the seating surface 101 side than the first state P1. According to such a configuration, in the first state P1, since the entire table top plate 6 overlaps with the base member 3 in a plan view, the table top plate 6 does not protrude outward from the base member 3, and interference with the surroundings can be avoided. Further, in the first state P1, since the table top plate 6 is located on the side of the seating surface 101, the accessibility of the user to the seating surface 101 is enhanced. Also, in the first state P1, articles such as the user's belongings can be placed on the top surface 6f of the table top plate 6. At this time, since the table top plate 6 is located on the side of the seating surface 101, it is possible to suppress the articles placed on the top surface 6f from disturbing the user. Further, in the second state P2, since at least a part of the table top plate 6 is located closer to the seating surface 101 side than in the first state P1, at least a part of the table top plate 6 will be located in front of the user or obliquely in front of the user as viewed from the user seated on the seating surface 101. Therefore, in the second state P2, it is easy for the user to perform various operations on the top surface 6f of the table top plate 6. As a result, it becomes possible to provide the chair 1 that can suppress interference with the surroundings and enhance the accessibility of the user to the seating surface.

[0049] In the present embodiment, in the second state P2, at least a part of the table top plate 6 is configured to protrude forward from the base member 3. According to such a configuration, it is possible to ensure a wide interval in the front-rear direction Dfr between the user seated on the seating surface 101 and the table top plate 6. Therefore, interference between the user and the table top plate 6 can be suppressed, and the positional relationship between the user and the table top plate 6 becomes appropriate. Also, by protruding at least a part of the table top plate 6 forward, it is possible to secure a wide top surface 6f of the table top plate 6, and the workability of the user on the top surface 6f is enhanced.

[0050] In the present embodiment, in the first state P1, the top plate side portion 6s of the table top plate 6 is configured to be along the side of the base member 3. According to such a configuration, it is possible to suppress the table top plate 6 from protruding laterally.

[0051] In this embodiment, in the second state P2, the table top plate 6 is configured to incline forward toward the seating surface 101 side in the width direction Dw. According to such a configuration, as viewed from the user, since the table top plate 6 extends obliquely forward, even in the second state P2, the accessibility of the user to the seating surface 101 can be improved.

[0052] In this embodiment, a restricting mechanism 55 for restricting the rotation range of the table top plate 6 is provided. According to such a configuration, it is possible to prevent the table top plate 6 from rotating excessively and protruding around the chair 1 to interfere with articles or people.

[0053] In this embodiment, a panel member 9 is provided, and the restricting member 55 is configured to restrict the rotation of the table top plate 6 from the first state P1 toward the panel member 9 side. According to such a configuration, the panel member 9 can block the line of sight from the surroundings to the user sitting on the seating surface 101, thereby enhancing the privacy of the user. Further, since the restricting member 55 restricts the rotation of the table top plate 6 from the first state P1 toward the side plate portion 92 side of the panel member 9, interference between the table top plate 6 and the panel member 9 can be suppressed.

[0054] In this embodiment, a plate-like member 45 that forms an upward surface 102 is provided on the side of the seating surface 101. According to such a configuration, the seating surface 101 and the upward surface 102 can be clearly partitioned. Thereby, it is possible to prevent the user sitting on the seating surface 101 from interfering with the table top plate 6 in the first state P1. Also, a space is formed between the table top plate 6 and the plate-like member 45, and articles placed on the upward surface 102 can be stored in the space between the plate-like member 45 and the table top plate 6.

[0055] In this embodiment, the table top plate 6 is configured to be long in the front-rear direction Dfr of the base member 3 and short in the width direction Dw of the base member 3 in the first state P1. According to such a configuration, in the first state P1, the table top plate 6 can be efficiently accommodated within the range overlapping with the base member 3. Further, in the second state P2, since the table top plate 6 is in a state long in the width direction Dw of the base member 3, an operation space on the top surface 6f can be efficiently secured.

[0056] In the present embodiment, a configuration including a backrest 7 is adopted. According to such a configuration, a user can lean part of their body weight on the backrest 7 and can easily assume a stable posture. Further, the backrest 7 can easily guide the seating position of the user on the seating surface 101 to a position in front of the backrest 7. Therefore, the user can be guided to an appropriate position with respect to the table top plate 6.

[0057] In the present embodiment, the backrest 7 is configured to be arranged closer to the seating surface 101 side in the width direction Dw than the table top plate 6 in the first state P1. According to such a configuration, interference between the user sitting at a position in front of the backrest 7 on the seating surface 101 and the table top plate 6 can be suppressed. Further, by arranging the backrest 7 so as to overlap at least a part of the table top plate 6 in the width direction Dw in the second state P2, at least a part of the table top plate 6 is positioned in front of the user sitting at a position in front of the backrest 7 on the seating surface 101. Thereby, workability is enhanced when the user performs work on the top surface 6f of the table top plate 6.

[0058] (Other Embodiments) As described above, the preferred embodiments of the present invention have been described, but the present invention is not limited to these embodiments. Additions, omissions, substitutions, 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 and is limited only by the appended claims.

[0059] For example, in the above-described embodiment, the seating surface 101 and the upward surface 102 are formed of different materials, but the present invention is not limited to this. It is also possible to form the seating surface 101 and the upward surface 102 of the same material.

[0060] In the above-described embodiment, the table top 6 is rectangular in plan view, but it is not limited to this. The planar shape of the table top 6 can be changed as appropriate. Also, in the above embodiment, the support member 5 is arranged at the center in the width direction Dw of the plate-like member 45 at the front end portion of the plate-like member 45, but it is not limited to this. The position of the support member 5 can be changed as appropriate. For example, as shown in FIG. 11, the table top 6B may be in the shape of a pedestal in plan view. In the first state P1, the side edge portion 6t of the table top 6B, which is located on the side separated from the seating surface 101 in the width direction Dw, is inclined from one end portion 6a side toward the other end portion 6b. Thereby, when the table top 6B is rotated to the second state P2 (the state of the two-dot chain line in FIG. 11), the side edge portion 6t is inclined forward toward the seating surface 101 side in the width direction Dw. Thereby, in the second state P2, the accessibility of the user to the seating surface 101 is enhanced. Also, in the modification of FIG. 11, the support member 5B is arranged at the end in the width direction Dw of the plate-like member 45 at the front end portion of the plate-like member 45.

[0061] Also, as shown in FIG. 12, the table top 6C may be provided with a concave portion 68 that is recessed forward in the portion facing the user side in the second state P2. Thereby, while widely securing the working space on the top surface 6f, it is possible to suppress the user from feeling a sense of compression by the table top 6C. In addition to this, the table top 6 may have various shapes such as, for example, circular, elliptical, polygonal shapes such as triangular shapes, and the like.

[0062] Also, as shown in FIG. 13, the support member 5C may be arranged at the end on the seating surface 101 side in the width direction Dw of the upward-facing surface 102 at the rear end portion of the upward-facing surface 102. In this case, the support member 5 supports the other end portion 6b side of the table top 6C that is located rearward in the first state P1.

[0063] In the above-described embodiment, the backrest 7 is arranged on the seating surface 101 side in the width direction Dw with respect to the table top plate 6 in the first state P1. However, the present invention is not limited to this. For example, as shown in FIG. 13, a part of the backrest 7C may overlap with the table top plate 6C in the first state P1 in the width direction Dw. Even in such a case, in order to avoid interference with the table top plate 6 in the first state P1, the user sits at a position in front of the backrest 7 on the seating surface 101 side in the width direction Dw with respect to the table top plate 6.

[0064] In the above-described embodiment, the configuration in which the upward surface 102 is provided only on one side in the width direction Dw with respect to the seating surface 101 has been described. However, the present invention is not limited to this configuration. The upward surface 102 may be provided on both sides in the width direction Dw with respect to the seating surface 101. In the above-described embodiment, the configuration in which the chair 1 includes the backrest 7, the wiring connection part 8, the panel member 9, and the plate-like member 45 has been described. However, the chair 1 may have a configuration that does not include at least any one of the backrest 7, the wiring connection part 8, the panel member 9, and the plate-like member 45. In the above-described embodiment, the configuration in which the table top plate 6 is located in front of the base member 3 in the second state P2 and the third state P3 has been described. However, the present invention is not limited to this configuration. In the second state P2 and the third state P3, the entire table top plate 6 may overlap with the base member 3 in a plan view. In addition, in the above-described embodiment, the table top plate 6 is configured to be displaceable between the first state P1 and the second state P2 by rotating around the axis of the support member 5. However, the present invention is not limited to this. For example, the table top plate 6 may be displaced by sliding around the axis between the first state P1 and the second state P2. In addition, within the scope not departing from the gist of the present invention, it is possible to appropriately replace the constituent elements in the above-described embodiment with well-known constituent elements, and the above-described various modification examples may be appropriately combined.

Description of Reference Numerals

[0065] 1 Chair 3 Base member 5, 5B, 5C support members 6, 6B, 6C table top 6f top surface 6s side part of the top plate 7, 7C backrest 7f backrest surface 9 panel member 45 plate-like member 55 regulating mechanism 101 seating surface 102 upward surface Dfr front-back direction Dv up-down direction Dw width direction F floor surface P1 first state P2 second state

Claims

1. A base member installed on the floor surface, having a seating surface facing upward and an upward-facing surface formed on the side of the seating surface. The direction in which the seating surface and the upward-facing surface are aligned when viewed from the vertical direction is defined as the width direction, and the direction orthogonal to the width direction is defined as the front-rear direction. The base member is provided with a panel member having side plate portions provided on both sides of the base member and surrounding the space above the base member from both sides. A table top plate spaced above the base member and having a top surface facing upward. A support member extending upward from the upward-facing surface and supporting the table top plate so as to be rotatable about an axis along the vertical direction. A panel member provided on both sides of the base member in the width direction and having side plate portions surrounding the space above the base member from both sides. The table top plate is In a first state, at least a part of the table top plate overlaps the upward-facing surface in plan view, and the entire table top plate overlaps the base member in plan view. Displaceable about the axis between a second state in which the table top plate is located closer to the seating surface side than in the first state. The table top plate has a linear top plate side portion along the side of the base member in the first state. Chair.

2. In the second state, at least a part of the table top plate protrudes forward of the base member. The chair according to claim 1.

3. The chair according to claim 1 or 2, further comprising a restricting mechanism for restricting the rotation range of the table top plate around the support member.

4. At least on the side of the base member, a panel member rising upward is provided. The restricting mechanism restricts the rotation of the table top plate from the first state toward the panel member side. The chair according to claim 3.

5. A base member installed on the floor surface, having a seating surface facing upward and an upward-facing surface formed on the side of the seating surface. The direction in which the seating surface and the upward-facing surface are aligned when viewed from the vertical direction is defined as the width direction, and the direction orthogonal to the width direction is defined as the front-rear direction. The base member is provided with a panel member having side plate portions provided on both sides of the base member and surrounding the space above the base member from both sides. A table top plate spaced above the base member and having a top surface facing upward. A support member extending upward from the upward-facing surface and supporting the table top plate so as to be rotatable about an axis along the vertical direction. The table top plate is In a first state, at least a part of the table top plate overlaps the upward-facing surface in plan view, and the entire table top plate overlaps the base member in plan view. Displaceable about the axis between a second state in which the table top plate is located closer to the seating surface side than in the first state. The base member includes a plate-like member having the upward-facing surface on a side of the seating surface. In the first state, the table top is disposed above the plate-like member, and it is a chair. **Claim 6** The table top is long in the front-rear direction of the base member and short in the width direction of the base member in the first state. The chair according to any one of claims 1 to 5. **Claim 7** The base member further includes a backrest that rises upward from the base member and has a backrest surface facing forward, at a part in the width direction of the base member. The seating surface is formed including the front of the backrest. The chair according to any one of claims 1 to 6. **Claim 8** The backrest is disposed closer to the seating surface side in the width direction than the table top in the first state. disposed so as to overlap at least a part of the table top in the width direction in the second state. The chair according to claim 7.

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