JP6433057B2 - Chair and chair system - Google Patents

Description

  The present invention relates to a chair and a chair system.

  2. Description of the Related Art Conventionally, there is known a stool in which a seated person can sit in an indoor space such as a public facility or a waiting room, and no backrest or armrest is provided. As such a stool, a polystyrene foam base frame formed into a cross-sectional gate shape, an elastic foam and an elastic foam plate provided on the top of the foam resin base frame, and these polystyrene foam base frames and elastic foam And a decorative sheet covering the elastic foam plate have been proposed (see Patent Document 1 below).

Japanese Utility Model Publication No. 46-8436

However, in the stool which is a kind of chair described in Patent Document 1 shown above, since the support body that supports the load of the seated person is made of foamed polystyrene resin, it is necessary to make a mold for manufacturing the stool. There is a problem that the cost of the mold is increased.
In addition, when a plurality of types of chairs having different external shapes are manufactured according to the demands of consumers and the like, there is a problem that a molding die corresponding to each external shape is required and equipment costs increase.

  The present invention has been made in view of the above circumstances, and provides a chair and a chair system having different appearance shapes while using a common support.

In order to achieve the above object, the present invention employs the following means.
That is, the chair according to the present invention includes a support body installed on the floor surface, a first side surface and a second side surface disposed on the opposite side of the first side surface, and the first side surface is the support body. A chair comprising: a plurality of side members arranged along the side surfaces of the plurality of side members; and a seat member arranged on an upper part of the support and on an upper part of the plurality of side members . The second side surface of the side member forms at least a part of an outer shell of the side portion of the chair.

  In the chair configured as described above, the shape of the outline of the chair itself can be varied by changing the shape of the second side surface of the side member. Therefore, it is possible to provide a chair having a different external shape while sharing a support body on which the first side surface disposed on the opposite side of the second side surface is disposed.

Also, the chair according to the present invention, it is preferable that the plurality of side members are the same shape.

  In the chair configured as described above, the side members have the same shape, and therefore the types of parts can be suppressed.

  Moreover, the chair which concerns on this invention may incline so that the said 2nd side surface of the said side member may go gradually toward the center side of the said support body in planar view as it goes to the downward direction from upper direction.

In the chair configured as described above, the second side surface of the side member is inclined so as to gradually go to the center side of the planar view support body from the top to the bottom. Therefore, since the area of the seat member arranged on the upper part of the side member is larger than the area of the lower part of the support, the seat member can reliably support the seated person's buttocks.
Further, the legs of the seated person arranged on the second side surface side of the side member can be arranged so as to gradually face the center side of the planar view support body from the upper side to the lower side. Therefore, the freedom degree of the arrangement | positioning place of a seated person's leg | foot can be raised.

  Moreover, the chair system which concerns on this invention has a support body installed in a floor surface, a 1st side surface, and the 2nd side surface arrange | positioned on the opposite side of the said 1st side surface, respectively, said 1st side surface is said A first side member and a second side member that are selectively disposed so as to be along a side surface of the support; and an upper portion of the support and the first side member or the second side member. A chair system comprising a first seat member and a second seat member selectively disposed on the upper portion, wherein the second side surface of the first side member and the second side of the second side member. The side surface is gradually inclined toward the center side of the support in plan view as it goes from the upper side to the lower side, and the chair according to the first aspect includes the support and the outer shell of the side portion of the chair according to the first aspect. The first side member forming at least a part, and the first seat member, Child to said support, said second side member forming at least part of the outer side of the chair of the second embodiment, the the second seat member, comprising: a.

  In the chair system configured as described above, the chair according to the first aspect includes a support, a first side member, and a first seat member, and the chair according to the second aspect includes a support, A two-side member and a second seat member. Therefore, in the chair of the first aspect and the chair of the second aspect, the first side member or the second side member is selected and the first seat member or the second seat member is selected while sharing the support. Thus, the chair can have a different appearance. Therefore, in the chair of the first aspect and the chair of the second aspect, the types of components to be configured can be suppressed.

  According to the chair and the chair system according to the present invention, it is possible to make the appearance shape different while sharing the support.

It is a perspective view of the chair of the 1st mode of the chair system in one embodiment of the present invention. It is a disassembled perspective view of the chair of the 1st aspect of the chair system in one Embodiment of this invention. It is an elevation sectional view of the chair of the 1st mode of the chair system in one embodiment of the present invention. In order to show the structure of the chair of the 1st aspect of the chair system in one Embodiment of this invention, it is the figure which looked at the state which removed a part of 1st side part member from the top. In order to show the structure of the chair of the 2nd aspect of the chair system in one Embodiment of this invention, it is the figure which looked at the state which removed a part of 2nd side part member from the top. It is a disassembled perspective view of the chair of the 3rd aspect of the chair system in one Embodiment of this invention. It is an elevation sectional view of the chair of the 3rd mode of the chair system in one embodiment of the present invention. It is a disassembled perspective view of the chair of the 4th aspect of the chair system in one Embodiment of this invention. It is an elevation sectional view of the chair of the 4th mode of the chair system in one embodiment of the present invention. It is a disassembled perspective view of the chair of the 5th aspect of the chair system in one Embodiment of this invention. It is an elevation sectional view of the chair of the 5th mode of the chair system in one embodiment of the present invention.

Hereinafter, a stool system according to an embodiment of the present invention will be described as an example of a chair system.
In the present embodiment, a stool will be described as an example of a chair. This stool is installed in an indoor space such as a public facility or a waiting room, and can be seated by a user and is not provided with a backrest or armrest. And as a chair system, the stool system provided with the stool of the 5th aspect from the stool of the 1st aspect demonstrated below is mentioned as an example, and is demonstrated.

[Stool of the first aspect]
First, the stool of the first aspect will be described.
FIG. 1 is a perspective view of a chair according to a first aspect of a chair system in one embodiment of the present invention. FIG. 2 is an exploded perspective view of the chair of the first aspect of the chair system in one embodiment of the present invention. In FIG. 2, the tension material mentioned later is abbreviate | omitted and shown. FIG. 3 is an elevational sectional view of the chair of the first aspect of the chair system in one embodiment of the present invention. FIG. 4: is the figure which looked at the state which removed a part of 1st side part member, in order to show the structure of the chair of the 1st aspect of the chair system in one Embodiment of this invention. In FIG. 4, a cushion material and a tension material, which will be described later, are omitted.

  As shown in FIG. 1, the stool 101 of the first aspect includes a base body 1 installed on the floor, a core material 2 supported by the base body 1, and four pieces provided on the side of the core material 2. 3A (side member, first side member) 3A, core material 2 and cushion material (seat member, first seat member) 4A provided on the upper part of divided body 3A, divided body 3A and cushion material 4A, covering the outer periphery of 4A.

(Base body)
As shown in FIGS. 2 and 3, the base body 1 includes a skirt portion 11 that forms a lower surface, a base plate 12 disposed on the skirt portion 11, and a plurality of height-adjustable units attached to the skirt portion 11. The adjuster 13 is provided.

The skirt portion 11 includes a support plate portion 11A formed in a circular shape in plan view, and an inner wall portion 11B extending downward from an edge portion of the support plate portion 11A. Furthermore, the skirt portion 11 includes a bottom wall portion 11C that extends from the lower end of the inner wall portion 11B to the outer side (hereinafter sometimes simply referred to as “outer side”) of the stool 101 in plan view, and an end of the bottom wall portion 11C. And an outer wall portion 11D that rises upward from the portion. The upper end 11E of the outer wall portion 11D is located at substantially the same height as the upper surface 11U of the support plate portion 11A.
In this embodiment, the skirt part 11 is comprised with resin. Further, the support plate portion 11A, the inner wall portion 11B, the bottom wall portion 11C, and the outer wall portion 11D are integrally formed.

  An air hole 11K penetrating in the vertical direction is formed in the center of the support plate portion 11A in plan view. The air hole 11K is formed in a circular shape in plan view.

The support plate portion 11A is provided with an attachment hole 11X for attaching a base plate 12 described later. The support plate portion 11A is provided with an adjuster mounting portion 11Y for mounting the adjuster 13. The mounting holes 11X and the adjuster mounting portions 11Y are provided at four positions apart from each other.
The number of mounting holes 11X and adjuster mounting portions 11Y is not limited to four and can be selected as appropriate.

  The base plate 12 is formed in a circular shape in plan view. The base plate 12 is arranged above the support plate portion 11A of the skirt portion 11 with an end portion of a tension member 5A described later interposed therebetween. In this embodiment, the base board 12 is comprised with the plywood.

  An air hole 12K penetrating in the vertical direction is formed at the center of the base plate 12 in plan view. The air hole 12K is formed in a circular shape in plan view.

The screw portion at the tip of the adjuster 13 is screwed into an adjuster mounting portion 11Y provided on the support plate portion 11A of the skirt portion 11. Thereby, the adjuster 13 is attached to the center side of the skirt part 11 rather than the outer wall part 11D and the inner wall part 11B of the plan view skirt part 11.
Instead of the adjuster 13 capable of adjusting the height, a fixed leg (not shown; the same applies hereinafter) installed on the floor and fixed to the support plate 11A or the like, or a caster (not shown) that can travel and move on the floor ( (Not shown, the same shall apply hereinafter) and the like may be employed as appropriate. The number of fixed legs and casters can be selected as appropriate.

(Core material)
The core material 2 is provided on the base plate 12 of the base body 1. The core material 2 is formed in a columnar shape, and an air hole 2K penetrating in the vertical direction is formed in the center in plan view. The air hole 2K is formed in a circular shape in plan view. The air holes 2K of the core member 2, the air holes 12K of the base plate 12, and the air holes 11K of the skirt portion 11 are arranged so as to communicate in the vertical direction. Thus, when the seated person is seated, an air flow from above to below is formed in the order of the air hole 2K of the core member 2, the air hole 12K of the base plate 12, and the air hole 11K of the skirt portion 11. Can do. When a seated person stands, an air flow from the bottom to the top can be formed in the order of the air hole 11K of the skirt portion 11, the air hole 12K of the base plate 12, and the air hole 2K of the core member 2. it can. Therefore, when the seated person's load is applied to the stool 101 or the applied load is removed, the stool 101 can be prevented from being deformed. The sizes of the air holes 2K, 12K, and 11K are appropriately set depending on the degree of air escape (circulation amount) and the like.

  In the present embodiment, the core material 2 is made of, for example, a foaming resin such as polystyrene foam, a resin formed by blow molding, or the like, and thus the core material 2 can be reduced in weight.

  The side surface 2A of the core material 2 is formed in a curved surface shape. The upper surface 2B of the core material 2 is formed in an annular shape.

A fitting recess 2 </ b> D that is recessed upward corresponding to the shape of the base plate 12 is formed in the lower portion of the core material 2. The base plate 12 is disposed so as to fit into the fitting recess 2D. Thereby, the core material 2 is positioned with respect to the base body 1, and does not shift | deviate to an up-down direction and a horizontal direction.
In the present embodiment, the base body 1 and the core material 2 constitute a support body.

(Split body)
The four divided bodies 3A have the same shape as each other, and are provided on the side surface 2A of the core member 2 at equal intervals. The divided body 3A includes an inner surface (first side surface) 31A disposed along the side surface 2A of the core member 2, an outer surface (second side surface) 32A disposed on the opposite side of the inner surface 31A, and an upper end and an outer surface of the inner surface 31A. And an upper surface 33A connecting the upper end of 32A. In the present embodiment, the divided body 3A is made of, for example, a foaming resin such as polystyrene foam, a resin formed by molding, or the like.

  The outer surface 32 </ b> A of the divided body 3 </ b> A is gradually inclined from the outer side of the planar stool 101 toward the center side as it goes from the upper side to the lower side.

  An inner side 34A formed by the inner surface 31A and the upper surface 33A of the divided body 3A is formed in an arc shape corresponding to the outer periphery of the upper surface 2B of the core member 2. An outer side 35A formed by the outer surface 32A and the upper surface 33A of the divided body 3A is formed in a shape corresponding to the outer periphery of a cushion material 4A described later. That is, the outer side 35A has an arc portion 36A formed on an arc and linear portions 37A and 38A extending linearly from both ends of the arc portion 36A. The extension line of the straight part 37A and the extension line of the straight part 38A intersect each other at substantially right angles.

  As shown in FIGS. 1 and 4, the outer shape of the stool 101 formed by the core material 2 and the divided body 3A provided on the side surface 2A of the core material 2 corresponds to a cushion material 4A described later in the upper part in a plan view. A shape close to a rectangular shape is formed, and a shape close to a circular shape corresponding to the base body 1 is formed in the lower portion.

(Cushion material)
As shown in FIGS. 2 and 3, the cushion material 4 </ b> A has a rectangular shape in plan view, and four corners are formed in an arc shape. The cushion material 4A is provided so as to cover the upper surface 2B of the core material 2 and the upper surface 33A of the divided body 3A. In the present embodiment, the cushion material 4A is made of urethane.

(Upholstery material)
The upholstery material 5A includes an inner covering material 51A and an outer covering material 52A provided on the outer side of the inner covering material 51A and having elasticity. In the present embodiment, the inner covering material 51A is composed of slab urethane in which urethane is cut into a desired shape. The jacket material 52A is formed of a stretch knit.

The upholstery material 5A is provided so as to cover the core material 2, the divided body 3A, and the cushion material 4A. The end portion 53A of the upholstery material 5A is fixed to the lower surface 12C of the base plate 12, and between the outer peripheral portion 2E of the lower portion of the base plate 12 and the core material 2 and the upper surface 11U of the support plate portion 11A of the skirt portion 11. It is sandwiched. A screw 11Z is inserted through the mounting hole 11X formed in the support plate portion 11A and is screwed to the base plate 12. Thus, the end portion 53A of the upholstery material 5A is attached between the base plate 12 and the outer peripheral portion 2E below the core material 2 and the upper surface 11U of the support plate portion 11A of the skirt portion 11.
The upholstery material 5A, the core material 2, the divided body 3A, and the cushion material 4A may be bonded by an adhesive (not shown) or the like.
Further, as a method for fixing the end portion 53A of the upholstery material 5A to the base plate 12, a method of fastening with a needle (not shown) with a tucker (not shown) or the like can be employed. Alternatively, a cylindrical insertion portion (not shown; the same applies hereinafter) extending along the inner edge is formed on the end portion 53A of the upholstery material 5A. A string member (not shown; the same applies hereinafter) such as a flexible wire is inserted into the insertion part, and the string member is tensioned. A method of inserting a string body into a groove (not shown) formed in the base plate 12 and pressing the skirt portion 11 from below can also be adopted. Alternatively, a method of adhering the end portion 53A of the upholstery material 5A to the lower surface 12C of the base plate 12 with an adhesive (not shown) may be employed.

[Stool of the second aspect]
Next, the stool according to the fifth aspect will be described in order from the stool according to the second aspect. The base body 1 and the core material 2 are common to the stool of the fifth aspect from the stool of the second aspect and the stool 101 of the first aspect.
In the stools of the second to fifth aspects described below, the same reference numerals are given to the same components as those of the stool 101 of the first aspect described above, and the description thereof is omitted.

First, the stool of the second aspect will be described mainly using FIG.
FIG. 5 is a top view showing a state in which a part of the divided body is removed in order to show the configuration of the stool of the second aspect of the stool system in the present embodiment. In FIG. 5, the cushion material and the upholstery material are omitted.
As shown in FIG. 5, the stool 102 of the second aspect includes a base body 1 (see FIG. 1), a core material 2, three divided bodies (second side members) 3 </ b> B, and a cushion material (second Seat member) 4B and a tension member (not shown, the same applies hereinafter).

  The three divided bodies 3B have the same shape as each other, and are provided on the side surface 2A of the core member 2 at equal intervals. The outer surface 32B of the divided body 3B is gradually inclined from the outside to the center of the planar stool 102 as it goes from the top to the bottom.

  The cushion material 4B is formed in a triangular shape in plan view. The upholstery material is provided so as to cover the core material 2, the divided body 3B, and the cushion material 4B.

  The outline of the stool 102 formed by the core material 2 and the divided body 3B disposed on the side surface 2A of the core material 2 has a shape close to a triangle shape corresponding to the cushion material 4B in the upper part and a base in the lower part. It has a shape close to a circle corresponding to the body 1 (see FIG. 2).

[Third Aspect Stool]
Next, the stool of the third aspect will be described mainly with reference to FIGS.
FIG. 6 is an exploded perspective view of the stool of the third aspect of the stool system in the present embodiment. FIG. 7 is an elevational sectional view of the stool of the third aspect of the stool system in the present embodiment.
As shown in FIGS. 6 and 7, the stool 103 of the third aspect includes a base body 1, a core material 2, four divided bodies 3 </ b> C, a cushion material 4 </ b> C, and a tension material 5 </ b> C.

  The four divided bodies 3C have the same shape as each other, and are provided on the side surface 2A of the core member 2 at equal intervals. The outer surface 32 </ b> C of the divided body 3 </ b> C is gradually inclined outward from the center side of the planar view stool 103 as it goes downward from above.

  The cushion material 4C is formed in a circular shape in plan view. The upholstery material 5C is provided so as to cover the core material 2, the divided body 3C, and the cushion material 4C.

  The outline of the stool 103 formed by the core material 2 and the divided body 3C arranged on the side surface 2A of the core material 2 has a shape close to a circle corresponding to the cushion material 4C in the upper part and is rectangular in the lower part in a plan view. The shape is close to the shape.

[Fourth Stool]
Next, the stool according to the fourth aspect will be described mainly with reference to FIGS.
FIG. 8 is an exploded perspective view of the stool of the fourth aspect of the stool system in the present embodiment. FIG. 9 is an elevational sectional view of the stool of the fourth aspect of the stool system in the present embodiment.
As shown in FIGS. 8 and 9, the stool 104 of the fourth aspect includes a base body 1, a core material 2, four divided bodies 3 </ b> D, a cushion material 4 </ b> D, and a tension material 5 </ b> D.

  The four divided bodies 3D have the same shape as each other, and are provided on the side surface 2A of the core member 2 at equal intervals. The outer surface 32D of the divided body 3D extends in the vertical direction.

  The outline of the stool 104 formed by the core material 2 and the divided body 3D disposed on the side surface 2A of the core material 2 has a shape close to a rectangular parallelepiped shape.

  The cushion material 4D is formed in a rectangular shape in plan view. The upholstery material 5D is provided so as to cover the core material 2, the divided body 3D, and the cushion material 4D.

[Fifth Aspect Stool]
Next, the stool of the fifth aspect will be described mainly with reference to FIGS.
FIG. 10 is an exploded perspective view of the stool of the fifth aspect of the stool system in the present embodiment. FIG. 11 is an elevational sectional view of the stool of the fifth aspect of the stool system in the present embodiment.
As shown in FIGS. 10 and 11, the stool 105 of the fifth aspect includes a base body 1, a core material 2, four divided bodies 3 </ b> E, a cushion material 4 </ b> E, and a tension material 5 </ b> E.

  The four divided bodies 3E have the same shape as each other, and are provided on the side surface 2A of the core member 2 at equal intervals. The outer surface 32E of the divided body 3E is gradually inclined outward from the center side of the planar stool 105 as it goes from the upper and lower ends toward the center side in the vertical direction.

  The cushion material 4E is formed in a circular shape in plan view. The upholstery material 5E is provided so as to cover the core material 2, the divided body 3E, and the cushion material 4E.

  The outline of the stool 105 formed by the core material 2 and the divided body 3E arranged on the side surface 2A of the core material 2 has a shape close to a circle corresponding to the cushion material 4E in the upper part in a plan view, and the base in the lower part. It has a shape close to a circle corresponding to the body 1.

  In the stool system configured as described above, the base body 1 and the core material 2 are used in common, and the shapes of the divided bodies 3A to 3E are selected, so that the stools 101 to 105 themselves have different outer shapes from the first aspect. The stools 101 to 105 of the five aspects can be provided. Since the base body 1 and the core material 2 can be made common in the stools 101 to 105 of each aspect, the types of components constituting the stools 101 to 105 can be suppressed.

  Moreover, in the stool 101 of the first aspect, the plurality of divided bodies 3A have the same shape. Similarly, in the stools 102 to 105 of the second aspect to the fifth aspect, the divided bodies constituting the stools of each aspect have the same shape. It is. Therefore, the types of parts can be suppressed.

  Further, the outer surface 32A of the divided body 3A is inclined so as to gradually go from the outer side of the planar stool 101 toward the center side as it goes from the upper side to the lower side. Therefore, since the area of the cushion material 4A provided on the upper part of the divided body 3A is larger than the area of the base body 1, the cushion material 4A can reliably support the seated person's buttocks.

  Further, the legs of the seated person arranged on the outer surface 32A side of the divided body 3A can be arranged so as to gradually go toward the center side of the planar view stool 101 from the upper side to the lower side. Therefore, the freedom degree of the arrangement | positioning place of a seated person's leg | foot can be raised.

  Further, since the adjuster 13 is provided on the center side of the stools 101 to 105 in plan view with respect to the outer wall portion 11D and the inner wall portion 11B of the skirt portion 11, the user's feet, articles, and the like do not hit the adjuster 13. At the same time, the adjuster 13 is not damaged or broken. In addition, when viewed from the outside, the adjuster 13 cannot be visually recognized because it is hidden by the outer wall portion 11D and the inner wall portion 11B of the skirt portion 11, so that the stools 101 to 105 having excellent design can be provided.

  Further, even when the divided body 3A is made of resin, the core material 2 is shared, so that if the molds of the divided bodies 3A to 3E smaller than the core material 2 are prepared, the external shapes 5 are different. Types of stools 101-105 can be manufactured. Therefore, equipment cost can be suppressed.

  In addition to this, the configuration described in the above embodiment can be selected or changed to another configuration as appropriate without departing from the gist of the present invention.

  For example, in the above-described embodiment, the support is formed in a columnar shape, but the present invention is not limited to this. For example, the shape in plan view of the support body such as the base body and the core material and the cushion material is not limited to a circular shape, and may be a rectangular shape, a triangular shape, a polygonal shape, or the like.

  Moreover, in embodiment shown above, although the stool system is provided with five stools from the 1st aspect to the stools 101-105 of the 5th aspect, this invention is not limited to this. Only one aspect of the stool may be used. Or you may be comprised with the stool of 2-4 aspects, or the stool of 6 or more aspects.

Moreover, in embodiment shown above, although the some division body 3A is arrange | positioned at the side surface 2A of the core material 2, this invention is not limited to this.
For example, the side member (not shown) in which the plurality of divided bodies 3A are connected and integrated may cover the side surface 2A of the core member 2. In this case, if the integrated side member is placed on the core material 2 from above or below the core material 2, the side member integrated with the side surface 2 </ b> A of the core material 2 is disposed.
Or the structure arrange | positioned at the side part of the core material 2 may be sufficient as one division body 3A.

  Moreover, in embodiment shown above, although the several division body is made into the same shape by the stool system of each aspect, this invention is not limited to this. The shapes of the plurality of divided bodies may be different from each other.

  Moreover, in embodiment shown above, although the stool was mentioned as an example and demonstrated as an example of a chair, this invention is not limited to this. The present invention can also be applied to a chair provided with a backrest in the seat.

  In the embodiment described above, the upholstery material 5A is formed continuously, but the present invention is not limited to this. The portion that covers the cushion material 4A and forms the upper surface and the portion that is disposed on the side of the divided body 3A and forms the side surface may be configured separately and joined to each other.

1 ... Base body (support)
2. Core material (support)
2A: Side surface of core material 2 (side surface of support)
3A: Divided body (side member, support for chair of first aspect)
3B ... Divided body (side member, support body for chair of second mode)
4A ... cushion material (seat member, seat member of the chair of the first aspect)
4B ... cushion material (seat member, seat member of the chair of the first aspect)
5A ... Upholstery material 11 ... Skirt portion 31A ... Inner surface (first side surface, first side surface of the chair in the first mode)
31B ... Inner surface (first side surface, first side surface of the chair of the second mode)
32A ... Outer surface (second side surface, second side surface of the chair of the first embodiment)
32B ... outer surface (second side surface, second side surface of the chair of the second mode)
DESCRIPTION OF SYMBOLS 101 ... Stool 102 of 1st aspect ... Stool 103 of 2nd aspect ... Stool 104 of 3rd aspect ... Stool 105 of 4th aspect ... Stool of 5th aspect

Claims (4)

A support installed on the floor;
A plurality of side members having a first side surface and a second side surface disposed on the opposite side of the first side surface, the first side surface being disposed along the side surface of the support;
A seat member disposed on an upper portion of the support and on an upper portion of the plurality of side members,
The second side surface of the plurality of side members forms at least a part of an outer shell of the side portion of the chair. Chair according to claim 1, wherein the plurality of side members are the same shape.   3. The chair according to claim 1, wherein the second side surface of the side member is inclined so as to gradually go to the center side of the support in plan view as it goes from above to below. A support installed on the floor;
A first side that has a first side surface and a second side surface disposed on the opposite side of the first side surface, and is selectively disposed so that the first side surface is along the side surface of the support body A member and a second side member;
A chair system comprising a first seat member and a second seat member selectively disposed on the upper portion of the support and the upper portion of the first side member or the second side member,
The second side surface of the first side member and the second side surface of the second side member are inclined so as to gradually go to the center side of the support in plan view as it goes downward from above.
The chair of the first aspect includes the support, the first side member that forms at least a part of the outer shell of the side part of the chair of the first aspect, and the first seat member.
The chair according to the second aspect includes the support, the second side member forming at least a part of the outer shell of the side part of the chair according to the second aspect, and the second seat member. And chair system.

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