JP2018047137A - Chair and chair structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a technique that suppresses deterioration of beauty of a chair.SOLUTION: The chair is equipped with a support member which is at least either a seat body or a backrest that support a seated person. The support member has following composite sections at least in a part of the outer periphery. The composite sections includes a first periphery which is a part of a first member and a second periphery which is a part of a second member, where the first and the second peripheries are arranged side by side in the thickness direction of the support member. In the composite sections, at least a part of the first periphery is formed as a thin part which is thinner than a part situated at least on a part of the outer side of the first periphery in the first member.SELECTED DRAWING: Figure 5

Description

  The present disclosure relates to chairs.

  A chair usually includes a support member for supporting a seated person such as a seat or a backrest. When the support member is composed of a plurality of members, there may be a structure in which the state in which the plurality of members are arranged can be visually recognized from the outside in the outer peripheral portion. For example, as for the chair shown by patent document 1, as a result of the seat part 12 being arrange | positioned on the leg part 10, the outer peripheral part of the seat part 12 and the part arrange | positioned just under the seat part in the leg part 10, and a seat part The structure is such that 12 outer edge portions overlap each other.

JP 2010-005285 A

  Like the chair described in Patent Document 1, if the outer peripheral portion of the support member is in a state where a plurality of members are arranged and the thickness of the outer peripheral portion increases, the aesthetic appearance of the chair may be impaired.

  The objective of this indication is to propose the technique which suppresses that the beauty | look of a chair will fall.

  One aspect of the present disclosure is a chair, and includes a support member that is at least one of a seat body and a backrest that supports a seated person, and the support member is a composite that is described below on at least a part of the outer periphery thereof. Has a part. The composite portion includes a first outer peripheral portion that is a part of the first member and a second outer peripheral portion that is a part of the second member, and the first outer peripheral portion and the second outer peripheral portion are supported by the first outer peripheral portion. They are arranged side by side in the thickness direction of the members. In the composite part, at least a part of the first outer peripheral part is a thin part whose thickness in the thickness direction is thinner than a part of the first member located outside at least a part of the first outer peripheral part. It is formed as.

  In the chair configured as described above, at least a part of the composite portion is thinned by the thin portion. Accordingly, it is possible to suppress a decrease in aesthetic appearance due to an increase in thickness as a result of overlapping a plurality of members.

  In the above-described chair, the first member is disposed on the outer periphery of the support member, is thicker than the thin portion, and is disposed at a position not aligned with the second outer peripheral portion in the thickness direction. You may be comprised so that it may have.

  In the chair configured in this way, the presence of the non-composite part described above makes it easier to visually recognize that the thin part of the composite part is a part of the first member being thinned. Can improve aesthetics.

In the chair described above, the thin-walled portion may have a concave shape on the side of the first outer peripheral portion where the second outer peripheral portion arranged side by side with the first outer peripheral portion is present.
In the chair configured as described above, at least a part of the composite portion has a structure in which the second outer peripheral portion is accommodated in a thin portion formed as a dent, so that the aesthetics can be further improved. .

  Further, the chair described above further includes a leg portion that has a length in the vertical direction and supports the support member, and each of the first member and the leg portion is a columnar or tubular member. Then, they may be bent and connected via a bent portion.

  In the chair configured as described above, a person who observes the chair compares the leg portion and the thin portion, and the portion having the thin portion of the composite portion is more suppressed by the thin portion. It can be clearly recognized. Thus, the chair can improve aesthetics.

Moreover, the chair mentioned above WHEREIN: Furthermore, the said 2nd outer peripheral part may be arrange | positioned rather than the said 1st outer peripheral part at the side where the said seated person sits.
In the chair configured as described above, since the thin portion is disposed in the first outer peripheral portion that is disposed in the portion where the body of the seated person is less likely to come in contact, it is difficult for the seated person to be affected by the reduced thickness. be able to.

  A different aspect of the present disclosure is a structure of a chair, and includes a part of a first member and an adjacent part that is a part of a second member and is arranged adjacent to a part of the first member. A part of the first member with respect to a direction in which the part of the first member and the adjacent part are aligned with respect to the outer part of the part of the first member. Is also formed as a thin portion having a small thickness.

  In the chair structure configured as described above, at least a part of the composite portion is thinned by the thin portion. Accordingly, it is possible to suppress a decrease in aesthetic appearance due to an increase in thickness as a result of overlapping a plurality of members.

FIG. 1A is a side view, FIG. 1B is a front view, FIG. 1C is a rear view, FIG. 1D is a plan view, and FIG. 1E is an IE of FIG. 1A. -IE sectional drawing. It is a perspective view which shows a seat board and a framework. It is a perspective view which shows a seat board and a framework. It is a perspective view which shows the state in which the seat plate was attached to the framework. It is a side view of a chair. It is VI-VI sectional drawing of FIG. 1A. It is VII-VII sectional drawing of FIG. 1A. It is a perspective view which shows a leg edge part. It is a perspective view which shows the recessed part provided in the lower pillar. It is XX sectional drawing of FIG. 1A. 11A to 11C are diagrams showing a modification of the composite unit. It is a figure which shows the modification of a composite part. It is a figure which shows the modification of a composite part. It is a figure which shows the modification of a leg edge part.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
[1. Embodiment]
[1-1. overall structure]
As shown in FIG. 1, the chair 1 includes a seat plate 11, a back plate 13, a framework 15, leg end portions 17, and the like.

  In the present embodiment, the configuration of each unit may be described using directions such as front and rear, left and right, and up and down. However, these directions are merely used for convenience of description, and the embodiment of the present disclosure There is nothing to limit about. The above-described direction is based on the seated person when the seated person normally sits on the chair 1 for the purpose of facilitating understanding.

  The chair 1 is symmetrical to the left and right with reference to a plane extending in the front-rear and up-down directions. In the chair 1, a seat body 21 is constituted by a part of the framework 15 and the seat plate 11, and a backrest 23 is constituted by a part of the framework 15 and the back plate 13. Below, the structure of the framework 15, the seat body 21, and the backrest 23 is demonstrated.

[1-2. Framework 15]
As shown in FIGS. 2 to 4, the framework 15 has a cylindrical shape, that is, a pair of left and right pipe bodies 31 formed by bending and welding a tubular metal pipe, and a rod-like shape connecting the pipe bodies 31. It has the front side connection part 32 and the rear side connection part 33, and the seat board receiving part 34 attached between a pair of pipe bodies 31. As shown in FIG.

The pipe body 31 includes a front pillar 41, a rear pillar 42, a lower pillar 43, and an upper pillar 44.
The front pillar 41 is located at the front portion of the pipe body 31 and has a length in the vertical direction.
The rear pillar 42 is located at the rear part of the pipe body 31 and has a length in the vertical direction. A thin portion 61 is formed on the upper portion of the rear pillar 42.

The thin portion 61 is formed to be thinner than a portion of the rear column 42 located outside the thin portion 61, that is, a portion below the thin portion 61 of the rear column 42.
The lower column 43 is located at the lower part of the pipe body 31 and connects the lower end of the front column 41 and the lower end of the rear column 42. The lower pillar 43 is a member having a columnar appearance, and is arranged along the floor surface on which the chair 1 is installed. A member having a columnar appearance means a member regardless of whether the inside is hollow or not, and is hollow in this embodiment.

  The lower pillar 43 has, on the lower surface, two concave portions 52 and a concave portion 53 that are recessed toward the upper side in a direction away from the floor surface than the surrounding portion. The recess 52 and the recess 53 are formed with an interval in the front-rear direction.

  The upper column 44 is located at the upper part of the pipe body 31, and connects the upper end of the front column 41 and the upper side of the rear column 42 slightly above the vertical center. The front column 41 and the upper column 44 are bent and connected via a bent portion 46 formed by bending a metal pipe. The rear end portion of the upper column 44 is connected to the rear connecting portion 33 by welding. The upper column 44 has a thick portion 62 on the front side and a thin portion 63 on the rear side.

  The thick part 62 has the same diameter as other parts in the pipe body 31. On the other hand, the thin-walled portion 63 is formed with a concave portion 54 that is recessed downward on the upper surface, so that the thickness is smaller than that of the thick-walled portion 62. It can be said that the thick part 62 is a part located outside the thin part 63 in the upper column 44. Here, the outside means the outside in the length direction of the upper column 44. Moreover, it can also be said that it is the outer side regarding the direction along the outer periphery of the seat body 21 mentioned later.

The front connection portion 32 connects the front pillars 41 of the left and right pipe bodies 31 to each other. Further, the rear side connecting portion 33 connects the rear pillars 42 of the left and right pipe bodies 31 to each other.
The seat plate receiving portion 34 is a plate-like member that is bent around. The seat plate receiving portion 34 has a pair of left and right side portions 55 arranged along a pair of left and right upper pillars 44 and a front portion 56 that connects the front ends of the pair of side portions 55.

  As shown in FIG. 3, through-holes 57 are formed in each of the pair of left and right side portions 55 at three positions spaced in the front-rear direction. A screw hole 58 is also formed on the back surface of the seat plate 11 at a position corresponding to the through hole 57. As shown in FIG. 6, the seat plate 11 is fixed to the framework 15 by screwing screws 65 into the screw holes 58 through the through holes 57.

[1-3. Seat 21 and backrest 23]
The seat body 21 includes a seat plate 11, a seat plate receiving portion 34, and an upper column 44. The seat body 21 has a seating surface 22.

The seat plate 11 has a substantially rectangular plate shape as a whole, and the front portion has a curved surface that is gently bent downward.
As shown in FIGS. 2, 4, etc., the width of the seat plate 11 in the left-right direction is wide at the back and narrow at the front, with a stepped portion 47 formed toward the front on both the left and right side surfaces. ing. The stepped portion 47 is inclined so as to protrude forward as viewed from the left and right sides. Of the left and right outer edge portions of the seat plate 11, the front side of the stepped portion 47 is a first outer edge portion 48, and the rear side is a second outer edge portion 49.

  In a state where the seat plate 11 is fixed to the framework 15, the second outer edge portion 49 is disposed so as to overlap the thin portion 63 in the vertical direction, and constitutes a seat body composite portion 71. Details of the seat complex portion 71 will be described later.

  As shown in FIG. 5, the backrest 23 includes a thin portion 61 and a back plate 13. In the state where the back plate 13 is fixed to the framework 15, as shown in FIG. 7, the end portion 74 in the left-right direction of the back plate 13 and the thin portion 61 are arranged so as to overlap each other, and the backrest composite portion 73 is configured. Details of the backrest composite portion 73 will be described later.

The seat body 21 and the backrest 23 both support the seated person. The seat body 21 is supported by the front pillar 41, the rear pillar 42, and the lower pillar 43.
[1-4. Seat complex portion 71 of seat 21]
As shown in FIG. 5 and FIG. 6, the seat body 21 has a seat body composite portion 71 on a part of the left and right side surfaces of the outer periphery thereof.

  The seat complex part 71 includes a thin part 63 that is a part of the upper column 44 and a second outer edge part 49 that is a part of the seat plate 11, and the thin part 63 and the second outer edge part 49 are: The seats 21 are arranged side by side in the thickness direction, that is, in the vertical direction in this embodiment.

  In the seat complex portion 71, the thin portion 63 has the concave portion 54 described above, so that the thickness in the thickness direction of the seat body 21 is smaller than that of the thick portion 62. In addition, the thin portion 63 has a shape in which the side where the second outer edge portion 49 arranged side by side with the thin portion 63 exists is recessed.

The second outer edge portion 49 is arranged closer to the seated person than the thin portion 63.
In the seat complex portion 71 configured in this way, the thickness of the thin portion 63 and the second outer edge portion 49 is substantially the same as the diameter of the thick portion 62. As shown in FIG. 6, when the cross section of the seat complex portion 71 is viewed from the front, the left and right outer ends of the second outer edge portion 49 are rounded on the upper side. Therefore, a cylindrical surface extending in the front-rear direction is formed by overlapping the rounded thin portion 63 on the lower side.

  That is, the seat complex portion 71 has the same thickness as the thick portion 62 of the upper column 44, which is one of the two members of the seat plate 11 and the upper column 44, and the surface thereof. Since the thick-walled portion 62 has a cylindrical shape, a part of the seat body composite portion 71 is formed into a similar cylindrical shape such as the thick-walled portion 62, the bent portion 46, and the front pillar 41. It has become.

  In addition, since the seat plate 11 is disposed above the upper column 44, the seat body 11 spreads to both ends in the left-right direction of the seat body 21, and a seating range within which the seated person can be seated without feeling uncomfortable is provided. Can be wide.

Of the upper pillar 44, the thick portion 62 is disposed on the outer periphery of the seat body 21, is thicker than the thin portion 63, and is disposed at a position that is not aligned with the second outer edge portion 49 and the seat body 21 in the thickness direction. Is done.
[1-5. Backrest compound part 73 of backrest 23]
As shown in FIGS. 5 and 7, the backrest 23 has a backrest composite portion 73 on a part of the left and right side surfaces of the outer periphery thereof.

  The backrest composite portion 73 includes a thin portion 61 that is a part of the rear column 42 and an end portion 74 that is a part of the back plate 13, and the thin portion 61 and the end portion 74 correspond to the backrest 23. They are arranged side by side in the thickness direction, that is, in the front-rear direction in this embodiment.

  In the backrest composite portion 73, the thin portion 61 is thinner in the thickness direction of the backrest 23 than the outer portion of the thin portion 61 in the rear column 42. Moreover, the thin part 61 is a shape where the side where the edge part 74 arrange | positioned along with the thin part 61 exists was dented. The end portion 74 is disposed on the side where the seated person sits rather than the thin portion 61.

  The backrest composite portion 73 configured in this manner has a thickness by the thin portion 61 and the end portion 74 that is substantially the same as the diameter of the rear column 42. Further, as shown in FIG. 7, when the cross section of the backrest composite portion 73 is viewed from above, the front end on the left and right outer sides of the end 74 is rounded. Therefore, the rear side overlaps with the rounded thin-walled portion 61 to form a columnar surface extending vertically.

  That is, the backrest composite portion 73 has two members of the back plate 13 and the rear pillar 42 which are overlapped, but fits in the same thickness as the rear pillar 42 which is one of them, and the surface thereof is also the rear pillar 42. As a result, the backrest composite portion 73 is partly formed in the same columnar shape as that of the rear pillar 42 at the lower portion thereof.

  Further, since the back plate 13 is disposed above the thin wall portion 61, the back plate 13 spreads to both ends in the left-right direction of the backrest 23, and is supported from the rear without giving a sense of incongruity to the seated person. The possible range can be widened.

[1-6. Leg end 17 and lower pillar 43]
As shown in FIG. 8, the leg end portion 17 includes a columnar body 81 having a length in the front-rear direction. Of the side surfaces of the columnar body 81, the upper surface is a flat surface 82. A through hole 83 is formed at the center of the plane 82 toward the back side of the columnar body 81. The upper side of the front and rear end portions of the columnar body 81 is an inclined surface 84 that is inclined downward toward the front and rear end sides.

  As shown in FIG. 9, the recess 52 formed in the lower pillar 43 includes a bottom surface 91 that is a flat surface located at the bottom on the back side of the recess 52 and a wall surface that is an inclined surface standing from both front and rear ends of the bottom surface 91. 92. A screw hole 93 is formed at the center of the bottom surface 91. In addition, the bottom surface here is a surface located in the back of the concave portion, and is a surface located on the upper side when the chair 1 is used as a reference.

  In a state where the leg end portion 17 is attached to the recess 52, the flat surface 82 contacts the bottom surface 91 and the inclined surface 84 contacts the wall surface 92. In this way, the leg end portion 17 abuts on the recess 52 on a plurality of surfaces.

  Further, as shown in FIG. 10, a groove 85 is formed in a lower end surface 86 that is a surface opposite to the plane 82 in the columnar body 81. The lower end surface 86 is a surface that contacts the floor surface. The groove 85 is connected to the through hole 83, and the leg end 17 is attached to the lower column 43 by inserting a screw 95 from the groove 85 side and screwing it into the screw hole 93. At this time, the leg end portion 17 is attached to the lower pillar 43 in a state in which at least a part is accommodated in the recess 52.

In addition, the recessed part 52 and the recessed part 53 are the same shapes, and the some leg end part 17 attached to them is also the same shape.
[1-7. effect]
According to the embodiment detailed above, the following effects can be obtained.

  (1a) In the chair 1, the 2nd outer edge part 49 and the thin part 63 comprise the seat body composite part 71, and the thickness of the seat body composite part 71 becomes substantially the same as the thick part 62. Has been. Therefore, it can suppress that the thickness of the seat body composite part 71 becomes large, and aesthetics fall, and can improve aesthetics.

  (1b) The seat complex portion 71 has a shape in which the thin portion 63 is recessed downward, and the second outer edge portion 49 is disposed thereon. For this reason, the seat composite portion 71 has the same height as the thick portion 62, so that a sense of unity between the upper pillar 44 and the seat plate 11 can be nurtured, thereby improving the aesthetic appearance.

  (1c) In the chair 1, the upper pillar 44 and the front pillar 41 are connected via the bent part 46, and can be visually recognized as a common member. Therefore, it can be clearly seen that the thin-walled portion 63 is thinner than the front pillar 41, and the originality of the design by thinning a part of the pipe body 31 can be clarified.

  (1d) In the chair 1, the 2nd outer edge part 49 is arrange | positioned rather than the thin part 63 at a seated person side. Therefore, the seated person is less likely to feel uncomfortable at the outer peripheral portion of the seating surface 22, and a decrease in sitting comfort can be suppressed.

  (1e) In the chair 1, the same effect as the above (1a) to (1d) can be obtained also in the backrest composite portion 73. That is, by arranging the thin portion 61 and the end portion 74, it is possible to improve the aesthetic appearance by suppressing an increase in thickness, and the thin portion 61 is disposed behind the end portion 74. Therefore, it is possible to suppress a decrease in the comfort of the backrest 23.

[1-8. Correspondence]
In the present embodiment, the seat body 21 and the backrest 23 are examples of the support member of the present disclosure, the upper column 44 and the rear column 42 are examples of the first member of the present disclosure, and the seat plate 11 and the back plate. 13 is an example of the second member of the present disclosure, the second outer edge portion 49 and the end portion 74 are examples of the second outer peripheral portion and the adjacent portion of the present disclosure, and the thick portion 62 is the non-composite portion of the present disclosure. It is an example and the front pillar 41 is an example of the leg part of this indication. Further, the columnar body 81 of the leg end portion 17 is an example of the adjacent portion of the present disclosure.

Moreover, in this embodiment, the thin part 63 and the thin part 61 are examples of the 1st outer peripheral part of this indication. That is, in the present embodiment, the entire first outer peripheral portion is formed as a thin portion.
Further, in the present embodiment, the seat body composite portion 71 and the backrest composite portion 73 are examples of the composite portion and structure of the present disclosure, and the structure including the recess 52 and the leg end portion 17, and the recess 53 A structure including the leg end portion 17 is an example of the structure of the present disclosure.

[2. Other Embodiments]
Although the embodiment of the present disclosure has been described above, the present disclosure is not limited to the embodiment described above, and it is needless to say that various forms can be taken as long as they belong to the technical scope of the present disclosure.

  (2a) In the above embodiment, the seat complex part 71 and the backrest complex part 73 (hereinafter collectively referred to simply as a complex part) each include a part of the framework 15 as a component. Indicated. However, the composite unit does not include a part of the framework 15 and may be configured by components other than the framework 15. Although it does not restrict | limit especially as components other than the framework 15 which comprises a composite part, It may be a component for aesthetics instead of the component used in order to exhibit the function as a chair. .

  (2b) In the above embodiment, the structure having the composite portion in each of the seat body 21 and the backrest 23 is illustrated, but the composite portion may be provided in only one of them. The position where the composite portion is formed may be at least a part of the outer periphery of the seat body 21 or the backrest 23, but may be the entire outer periphery.

  (2c) In the above embodiment, the composite portion includes the thin portion 61 or the thin portion 63, but exemplifies a configuration that does not include a portion such as the thick portion 62 having a larger thickness. However, for example, like the seat body composite portion 101 shown in FIG. 11A, the side surface portion 103 of the seat plate 11 that overlaps the upper column 44 is disposed not only on the thin portion 63 but also on the thick portion 62. It may be configured to be. That is, the composite part may have a part other than the thin part.

  In FIG. 11A, only the portion that overlaps the upper column 44 is illustrated as the side surface portion 103, and the portion that does not overlap the upper column 44 is not illustrated. The same applies to the following modifications.

  Further, unlike the seat complex portion 105 shown in FIG. 11B, the side surface portion 107 of the seat plate 11 does not cover the entire thin portion 63, and a part of the thin portion 63 is included as the configuration of the seat complex portion 105. It may not be.

  (2d) In the above-described embodiment, the seat body 21 includes the thick-walled portion 62 that is thicker than the thin-walled portion 63 outside the seat-body composite portion 71, more specifically, outside in the direction along the outer periphery of the seat body 21. Although the configuration provided as the non-composite portion is illustrated, a configuration that does not include the non-composite portion may be used. For example, if the side surface portion 113 of the seat plate 11 covers all the thick portion 62 and the thin portion 63 as in the seat complex portion 111 shown in FIG. 11C, the non-composite portion does not exist.

  (2e) In the above embodiment, the thin wall portion 61 and the thin wall portion 63 have a configuration in which the side on which the seat plate 11 and the back plate 13 are disposed is recessed, but the opposite side is recessed. There may be. For example, like the seat complex part 121 shown in FIG. 12, the side part 123 may be arranged on the side opposite to the side where the concave part in the thin part 125 is formed.

  (2f) In the above-described embodiment, the configuration in which the rear portion of the thick portion 62 in the upper column 44 is all formed as the thin portion 63 is illustrated, but like the seat complex portion 131 illustrated in FIG. The configuration may be such that the thick portion 133 is provided in front of the thin portion 132 and the thick portion 134 is provided behind the thin portion 132. Moreover, the structure by which a thick part is provided only behind a thin part may be sufficient.

  Moreover, the thickness of the thick part 133 and the thick part 134 does not need to be the same. For example, it is conceivable that the thin portion 132 is thin and the thick portion 134 is thicker than the thickness obtained by overlapping the thin portion 132 and the side portion 135.

  (2g) In the above embodiment, the configuration in which the leg end portion 17 is in contact with only the surfaces constituting the recess 52 and the recess 53 is illustrated. However, like the leg end portion 141 shown in FIG. 14, the outer peripheral surface of the lower pillar 43 may have an abutting surface 143 that abuts on the outer peripheral surface other than the concave portion 52 and the concave portion 53. Here, the outer peripheral surface is a cylindrical peripheral wall portion of the lower pillar 43 and is a portion around the recess 52 and the recess 53.

  (2h) In the above embodiment, the seat plate 11 is attached to the framework 15 with the thin portion 63 and the second outer edge portion 49 in contact with each other, and the back with the thin portion 61 and the end portion 74 in contact with each other. A configuration in which the plate 13 is attached to the framework 15 is illustrated.

However, the thin portion and the member adjacent to the thin portion do not need to contact each other. For example, it may be arranged with a small gap between them.
(2i) In the above embodiment, an example in which the pipe body 31 of the framework 15 is configured by a metal pipe has been described. However, the pipe body 31 may be configured by a member having a shape other than a cylindrical pipe. For example, it is possible to use a bulk material filled with the contents instead of a hollow shape, or a member whose cross section is a shape other than a circle such as a rectangle.

DESCRIPTION OF SYMBOLS 1 ... Chair, 11 ... Seat board, 13 ... Back board, 15 ... Framework, 17 ... Leg end part, 21 ... Seat body, 22 ... Seating surface, 31 ... Pipe body, 41 ... Front pillar, 42 ... Rear pillar, 43 ... lower pillar, 44 ... upper pillar, 46 ... bent portion, 48 ... first outer edge portion, 49 ... second outer edge portion, 52-54 ... concave portion, 57 ... through hole, 58 ... screw hole, 61 ... thin wall portion, 62 ... Thick part, 63 ... Thin part, 65 ... Screw, 71 ... Seat composite part, 73 ... Back composite part, 74 ... End part, 81 ... Columnar body, 82 ... Plane, 83 ... Through hole, 84 ... Inclined surface, 85 ... groove, 91 ... bottom surface, 92 ... wall surface, 93 ... screw hole, 95 ... screw, 101 ... seat body composite part, 103 ... side body part, 105 ... seat body composite part, 107 ... side part, 111 ... Seat complex part, 113 ... Side part, 121 ... Seat complex part, 123 ... Side part, 125 ... Thin part, 131 ... Seat complex part, 132 ... Thin wall , 133 and 134 ... thick portion, 135 ... side portion, 141 ... leg ends, 143 ... contact surface

Claims (6)

A chair,
A support member that is at least one of a seat body and a backrest that supports the seated person,
The support member includes a first outer peripheral portion that is a part of the first member and a second outer peripheral portion that is a part of the second member at least at a part of the outer periphery thereof, and the first outer peripheral portion; The second outer peripheral portion has a composite portion arranged side by side in the thickness direction of the support member,
In the composite part, at least a part of the first outer peripheral part is a thin part whose thickness in the thickness direction is thinner than a part of the first member located outside at least a part of the first outer peripheral part. Is formed as a chair. The chair according to claim 1,
The first member is a chair that is disposed on an outer periphery of the support member, has a non-composite portion that is thicker than the thin-walled portion and disposed at a position that is not aligned with the second outer peripheral portion in the thickness direction. The chair according to claim 1 or 2,
The thin-walled portion is a chair having a shape in which the side where the second outer peripheral portion is arranged side by side with the first outer peripheral portion of the first outer peripheral portion is recessed. The chair according to any one of claims 1 to 3,
It has a length in the vertical direction, has a leg portion that supports the support member,
Each of the first member and the leg portion is a columnar or tubular member, and is bent and connected via a bent portion. The chair according to any one of claims 1 to 4,
The second outer peripheral portion is a chair that is disposed closer to the seated person than the first outer peripheral portion. A composite part having a part of the first member and an adjacent part that is a part of the second member and is arranged adjacent to the part of the first member;
In the composite part, a part of the first member is a thin part having a thickness smaller than a part outside the part of the first member in a direction in which the part of the first member and the adjacent part are arranged. As a chair structure.

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