JP2024058308A - Chair - Google Patents

Abstract

A chair is provided that can improve the freedom of seating posture and comfort when seated, as well as improve the self-supporting stability.
[Solution] The chair 100 comprises a base body 3A placed on a floor surface F, and a seating portion 4 supported on the front part of the base body 3A, and a first lower limb accommodating space S11 is arranged on the front side of the base body 3A supporting the seating portion 4, rearward of the front end portion 4f of the seating portion 4, and a support surface 5u on which items can be placed is formed on at least the upper part of the rear part of the base body 3A.
[Selected Figure] Figure 1

Description

The present invention relates to a chair.

Traditionally, work spaces in offices and public facilities are often equipped with chairs that users can sit on and use while working, holding meetings, or taking breaks.

In particular, people want to use sofas that allow them to sit in a relaxed position during meetings or breaks. Many sofas have a base that is placed on the floor and a cushioned seating area that is placed on the base (see Patent Document 1 below).

In addition, in many chairs, including sofas, a recessed space is formed in the base that is recessed from the front to the rear, allowing the lower legs of the occupant to be accommodated, improving the freedom of seating position and comfort when seated.

JP 2020-65876 A

However, when the base is formed in a box shape, as in Patent Document 1, forming a wide kick-in space recessed from the front to the rear poses the problem of reduced stability when used as a chair.

Therefore, the present invention was made in consideration of the above circumstances, and provides a chair that can improve the freedom of sitting posture and comfort when sitting, as well as improve the chair's self-supporting stability.

In order to achieve the above object, the present invention employs the following means.
In other words, the chair of the present invention comprises a base body placed on a floor surface and a seating portion supported on the front part of the base body, and a first lower limb accommodating space is arranged on the front side of the base body supporting the seating portion, rearward of the front end part of the seating portion, and a support surface on which items can be placed is formed on at least the upper part of the rear part of the base body.

In a chair configured in this manner, a seating section is supported on the front of the base body, and a user can sit on the seating section, which is the front part of the chair. A support surface is formed on the rear of the base body. Since an article can be placed on the support surface, the base body with the support surface formed on its rear part has a desired weight. Therefore, when a user sits on the seating section, the chair is prevented from tipping forward, and the self-supporting stability can be improved.
In addition, a first lower limb accommodating space is disposed behind the front end of the seat on the front side of the base body supporting the seat, so that a user seated on the seat can place his/her lower limbs in the first lower limb accommodating space, thereby improving the freedom of seating posture and comfort when seated.

In addition, in the chair according to the present invention, the first lower leg accommodation space may be formed in the front part of the base body supporting the seat part so as to be recessed from the front to the rear.

In a chair configured in this manner, a first lower leg accommodation space is formed in the front part of the base body that supports the seat, recessed from the front to the rear. Therefore, the shape of the front part of the base body can increase the degree of freedom of the first lower leg accommodation space.

In addition, in the chair according to the present invention, the base body may have a base portion that is placed on the floor surface and supports the seat portion, and a support portion that is supported at least at the rear portion of the base portion and has the support surface formed on its upper portion.

In a chair configured in this way, the support part, which has a support surface formed on the upper part, is supported at least at the rear part of the base part. Therefore, a support part of a desired shape can be appropriately installed.

In addition, in the chair according to the present invention, a front wall portion that is placed on the floor surface is provided at the front portion of the base body that supports the seating portion, and the front surface of the front wall portion is gradually inclined toward the rear as it extends downward, and the first lower leg accommodation space may be formed below the front wall portion.

In a chair configured in this manner, the front surface of the front wall of the base body is inclined so that it gradually slopes backward as it approaches the bottom. A first lower limb accommodation space is formed below the front wall. This makes it possible to ensure a wide first lower limb accommodation space and to reduce the discomfort felt when the lower limbs come into contact with the front surface of the front wall.

In addition, in the chair according to the present invention, the height from the floor surface to the support surface may be lower than the height from the floor surface to the upper surface of the seat.

In a chair configured in this way, the height from the floor to the support surface is lower than the height from the floor to the top surface of the seat. Therefore, a user can place items on the low-positioned support surface or pick up items from the support surface while seated on the seat.

In addition, in the chair of the present invention, the weight of the base body may be greater than the weight of the seating portion.

In a chair constructed in this way, the weight of the base body is greater than the weight of the seating portion. This further improves the chair's stability when standing on its own.

The chair according to the present invention may also include a panel body disposed between the seat and the support surface, the panel surface of which faces in the front-rear direction.

In a chair constructed in this way, a panel body with its plate surface facing forward and backward is placed between the seating portion and the support surface. This allows the seating portion side and the support surface side to be used separately as separate spaces by dividing the space between the seating portion and the support surface with the panel body.

In addition, the chair according to the present invention may be configured so that a person can sit on the support surface, and a second lower leg accommodation space recessed from the rear to the front may be formed in the rear part of the base body on which the support surface is formed.

In the chair constructed in this manner, a second lower-leg accommodating space is formed at the rear of the base body on which the support surface is formed, recessed from the rear to the front. Therefore, a user seated on the support surface can place his/her lower legs in the second lower-leg accommodating space, improving the freedom of seating position and comfort when seated.
In addition, the user can insert his/her toes into the second lower limb accommodating space to improve access to the support surface when placing or removing items on the support surface.

In addition, in the chair according to the present invention, a rear wall portion that is placed on the floor surface is provided at the rear of the base body on which the support surface is formed, and the rear surface of the rear wall portion is gradually inclined toward the front as it extends downward, and the second lower leg accommodation space may be formed below the rear wall portion.

In a chair configured in this manner, the rear surface of the rear wall of the base body is inclined so that it gradually slopes forward as it approaches the bottom. A second lower leg accommodation space is formed below the rear wall. This makes it possible to ensure a wide second lower leg accommodation space and to reduce the discomfort felt when the lower legs come into contact with the rear surface of the rear wall.

The chair of the present invention can improve the freedom of seating position and comfort when seated, as well as improve the stability of the chair when standing upright.

1 is a perspective view of a chair according to a first embodiment of the present invention; FIG. 1 is a plan view of a chair according to a first embodiment of the present invention. 1 is a side view of a chair according to a first embodiment of the present invention, with a portion cut away; FIG. 5 is a side view of a chair according to a second embodiment of the present invention, with a portion cut away. FIG. 11 is a side view of a chair according to a third embodiment of the present invention, with a portion cut away. FIG. 10 is a side view of a chair according to a fourth embodiment of the present invention. FIG. 13 is a side view of a chair according to a fifth embodiment of the present invention.

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

<Chair>
FIG. 1 is a perspective view showing a chair according to a first embodiment of the present invention.
The chair 100 shown in FIG. 1 is a sofa placed on a floor surface F in various facilities (offices, public facilities, etc.).

The chair 100 comprises a panel unit 1, a base body 3A, and a seating member (seating portion) 4.

In the following description, directions such as front, back, left and right are based on the directions as seen by a user seated on the seating member 4, with the left and right direction being the width direction Dw, the direction along the horizontal direction perpendicular to the width direction Dw being the front-back direction Df, and the direction perpendicular to the width direction Dw and the front-back direction Df being the up-down direction Dv. The direction toward the center in the width direction Dw is the inside of the width direction Dw, and the opposite side is the outside of the width direction Dw.

<Panel unit>
The panel unit 1 has a panel body 1A. The panel body 1A has a first panel member 11, a corner panel member 12, and a second panel member 13. The first panel member 11, the corner panel member 12, and the second panel member 13 may be collectively referred to as panel members 10.

The panel member 10 has a panel body 21 that is placed on the floor surface F, and a lower mounting part 22 and an upper mounting part 23 that cover the panel body 21. The panel body 21 is a plate-shaped base material made of a material such as metal or wood. The lower part of the surface of the panel body 21 is covered by the lower mounting part 22, and the part above the lower part is covered by the upper mounting part 23. For example, the lower mounting part 22 is a material such as metal, and the upper mounting part 23 is a material such as cloth. The panel body 21 may be covered with the same mounting material over the entire vertical direction Dv.

FIG. 2 is a plan view of chair 100.
2, the first panel member 11 is disposed along the width direction Dw. The plate surface of the first panel member 11 faces the front-rear direction Df. The first panel member 11 is disposed between the seat member 4 and the plate member 5. The first panel member 11 corresponds to a panel body in the claims.

The second panel members 13 are arranged along the front-rear direction Df. The plate surfaces of the second panel members 13 face the width direction Dw. A pair of second panel members 13 are arranged facing each other in the width direction Dw.

The corner panel member 12 connects the end of the first panel member 11 in the width direction Dw to the rear end of the second panel member 13. The corner panel member 12 is formed in an arc shape when viewed in the up-down direction Dv. The first panel member 11 and the corner panel member 12 are connected by a connecting means (not shown). The corner panel member 12 and the second panel member 13 are connected by a connecting means (not shown).

An internal space S2 is formed surrounded by the first panel member 11, the pair of corner panel members 12, and the pair of second panel members 13. The internal space S2 is surrounded on three sides by the pair of corner panel members 12 and the pair of second panel members 13 when viewed from the up-down direction Dv. The internal space S2 is surrounded on both sides and the rear in the width direction Dw. The upper part of the internal space S2 is open. In the first panel member 11, the pair of corner panel members 12, and the pair of second panel members 13, the surfaces facing the internal space S2 are referred to as the inner surface 1a. In the first panel member 11, the pair of corner panel members 12, and the pair of second panel members 13, the surfaces facing the external space S1 on the opposite side to the internal space S2 are referred to as the outer surface 1b.

<Base body>
The base body 3A is placed on a floor surface F. The base body 3A has a base portion 3 and a plate member (support portion) 5.

<Base part>
As shown in Fig. 1, the base portion 3 is placed on a floor surface F. The base portion 3 is a box-shaped member made of, for example, metal or other material. The base portion 3 is disposed along the inner surface 1a and outer surface 1b of the panel body 1A. The base portion 3 is disposed below where a seating member 4 and a plate member 5, which will be described later, are disposed. The base portion 3 supports the seating member 4 and the plate member 5.

When viewed from the vertical direction Dv, the base portion 3 has a rectangular shape that is long in the width direction Dw, and the center of the width direction Dw protrudes forward. The shape of the base portion 3 when viewed from the vertical direction Dv can be set as appropriate. The base portion 3 has a peripheral wall portion 31, an inner wall portion 32 (see FIG. 3), and an upper wall portion 33 (see FIG. 3).

The peripheral wall portion 31 is disposed along the outer edge of the base portion 3. The peripheral wall portion 31 is placed on the floor surface F and extends upward from the floor surface F. The peripheral wall portion 31 is formed so that its lower portion is recessed toward the inside of the base portion 3. The surface of the peripheral wall portion 31 facing toward the outside of the base portion 3 is gradually inclined toward the inside of the base portion 3 as it extends downward. As a result, a lower limb accommodation space S10 is formed below the peripheral wall portion 31 over the entire outer periphery of the base portion 3.

The part of the peripheral wall 31 that is located in front of the base 3 and aligned along the front end 4f of the seating member 4 is referred to as the front peripheral wall (front wall) 311. The front peripheral wall 311 is positioned below the seating member 4 and is located at the front end of the base 3. Note that the front peripheral wall 311 only needs to be located in front of the base 3, and does not have to be located at the front end depending on the shape of the base 3.

FIG. 3 is a side view of the chair 100 with a portion cut away.
As shown in Fig. 3, the front surface 311f of the front peripheral wall portion 311 is inclined so as to gradually move rearward as it extends downward. As a result, a first lower leg accommodation space S11 is disposed on the front side of the base body 3A, rearward and below the front end portion 4f of the seating member 4. The first lower leg accommodation space S11 is formed below the front peripheral wall portion 311 so as to be recessed from the front to the rear. The first lower leg accommodation space S11 is formed so that the rear region gradually becomes wider as it extends downward.

The part of the peripheral wall 31 that is located at the rear of the base 3 and that is arranged along the rear end 5b of the plate member 5 is referred to as the rear peripheral wall (rear wall) 312. The rear peripheral wall 312 is arranged below the plate member 5 and is located at the rear end of the base 3. Note that the rear peripheral wall 312 only needs to be located at the rear of the base 3, and does not have to be located at the rear end depending on the shape of the base 3.

The rear surface 312b of the rear peripheral wall portion 312 is inclined so that it gradually approaches the front as it approaches downward. As a result, a second lower leg accommodation space S12 that is recessed from the rear toward the front is formed below the rear peripheral wall portion 312. The second lower leg accommodation space S12 is formed so that the front area gradually becomes wider as it approaches downward.

The inner wall portion 32 is disposed along the panel member 10 and extends upward from the floor surface. The inner wall portion 32 may be fixed to the panel member 10 by a fixing means (not shown). The upper wall portion 33 is connected to the upper end of the peripheral wall portion 31 and the upper end of the inner wall portion 32. The upper wall portion 33 is disposed along a horizontal plane. The upper wall portion 33 may be configured by bending from the upper end of the peripheral wall portion 31 and the upper end of the inner wall portion 32, or may be connected to the peripheral wall portion 31 and the inner wall portion 32 by a connecting means (not shown). The upper wall portion 33 has a hole (not shown) that penetrates in the vertical direction Dv. This allows wiring of electrical equipment to be arranged inside the base portion 3.

<Seating member>
The seating member 4 is disposed on the upper side of the base portion 3. The seating member 4 is supported by the front portion of the base portion 3. The seating member 4 is disposed along the inner surface 1a of the panel body 1A. A front end portion 4f of the seating member 4 is disposed directly above an upper end portion 311u of the front peripheral wall portion 311.

The seating member 4 is, for example, configured such that a seat plate and cushioning material are covered with an outer skin. The weight of the seating member 4 is less than the weight of the base body 3A. The seating member 4 is fixed to at least one of the base portion 3 and the panel body 1A. The seating member 4 may be configured to be placed on the base portion 3 without being fixed to the base portion 3 and the panel body 1A. The seating member 4 is approximately rectangular when viewed from the vertical direction Dv. The shape of the seating member 4 when viewed from the vertical direction Dv can be set as appropriate.

The cushion 16 can be leaned against the front surface of the first panel member 11, allowing the user P1 to sit on the seating member 4 with his or her back against the cushion 16.

<Plate Member>
The plate member 5 is disposed on the upper side of the base portion 3. The plate member 5 is disposed along the outer surface 1b of the panel body 1A. The plate member 5 is disposed in the entire area on the upper side of the base portion 3 where the seating member 4 is not disposed, but it is sufficient that the plate member 5 is disposed at least in the rear part on the upper side of the base portion 3.

The plate member 5 is a plate-shaped member made of, for example, a metal or other material. The plate surface of the plate member 5 faces the up-down direction Dv. The plate member 5 is fixed to the base portion 3 by a fixing means (not shown). The plate member 5 may be configured to be placed on the base portion 3 without being fixed to the base portion 3. The support surface 5u, which is the upper surface of the plate member 5, is a smooth surface along a horizontal plane. The height H2 from the floor surface F to the support surface 5u of the plate member 5 is lower than the height H1 from the floor surface F to the upper surface 4u of the seating member 4.

Items can be placed on the support surface 5u of the plate member 5. User P2 can also sit on the support surface 5u of the plate member 5. Because height H2 is lower than height H1, user P2 can sit at a height close to the floor surface F.

In the chair 100 configured in this manner, a seating member 4 is supported on the front of the base portion 3, and a user can sit on the seating member 4, which is the front part of the chair 100. A plate member 5 is supported in an area including the rear of the base portion 3. Since an item can be placed on the plate member 5, the rear of the base portion 3 and the plate member 5 have a desired weight. Therefore, when a user sits on the seating member 4, the chair 100 is prevented from tipping forward, and the self-supporting stability can be improved.

In addition, a first lower limb accommodation space S11 that is recessed from the front to the rear is formed in the front part of the base part 3 that supports the seating member 4. Therefore, a user seated on the seating member 4 can place their lower limbs in the first lower limb accommodation space S11, improving the degree of freedom of the seating posture and the comfort when seated. In addition, the shape of the front part of the base part 3 can increase the degree of freedom of the first lower limb accommodation space S11.

The support surface 5u of the plate member 5 is a smooth surface that is aligned with a horizontal plane. Therefore, items can be stably placed on the support surface 5u of the plate member 5, improving the convenience of the chair 100.

The front surface 311f of the front peripheral wall portion 311 of the base portion 3 is inclined so as to gradually move rearward as it extends downward. A first lower limb accommodation space S11 is formed below the front peripheral wall portion 311. This allows the first lower limb accommodation space S11 to be secured widely, and also reduces discomfort when the lower limb comes into contact with the front surface 311f of the front peripheral wall portion 311.

In addition, the height H2 from the floor surface F to the support surface 5u of the plate member 5 is lower than the height H1 from the floor surface F to the upper surface 4u of the seating member 4. Therefore, a user can place items on the plate member 5, which is in a low position, or pick up items from the plate member 5 while seated on the seating member 4.

The weight of the base body 3A is greater than the weight of the seating member 4. This further improves the self-supporting stability of the chair 100.

A first panel member 11 with its plate surface facing the front-rear direction Df is disposed between the seating member 4 and the plate member 5. Therefore, the space between the seating member 4 and the plate member 5 is partitioned by the panel unit 1 including the first panel member 11, and the seating member 4 side and the plate member 5 side can be used separately as separate spaces S1 and S2.

In addition, a second lower limb accommodation space S12 that is recessed from the rear to the front is formed in the rear of the base portion 3 that supports the plate member 5. Therefore, a user who sits on the plate member 5 can place their lower limbs in the second lower limb accommodation space S12, improving the freedom of seating posture and comfort when seated.

In addition, the user can insert the toes into the second lower limb storage space S12 to improve access to the plate member 5 when placing or removing items on the plate member 5.

The rear surface 312b of the rear peripheral wall portion 312 of the base portion 3 is inclined so that it gradually approaches the front as it approaches the bottom. A second lower limb accommodation space S12 is formed below the rear peripheral wall portion 312. This makes it possible to ensure a wide second lower limb accommodation space S12 and to suppress discomfort when the lower limbs come into contact with the rear surface 312b of the rear peripheral wall portion 312.

Second Embodiment
Next, a chair according to a second embodiment of the present invention will be described mainly with reference to Fig. 4. In the embodiment described below, the configurations corresponding to the above-described embodiment may be denoted by the same reference numerals, and the description thereof may be omitted.
FIG. 4 is a side view, with a part cut away, of a chair according to a second embodiment of the present invention.
As shown in Fig. 4, in the chair 100A according to this embodiment, the height of the panel member 10A is lower than that of the panel member 10 of the chair 100 according to the first embodiment (see Fig. 3). In the panel member 10 of the chair 100 according to the first embodiment, when the user P1 sits on the seating member 4, the head of the user P1 is positioned lower than the upper end portion 10u of the panel member 10. In the panel member 10A of the chair 100A according to this embodiment, when the user P1 sits on the seating member 4, the head of the user P1 is positioned higher than the upper end portion 10u of the panel member 10A.

In the chair 100A configured in this manner, a seating member 4 is supported on the front of the base portion 3, and a user can sit on the seating member 4, which is the front part of the chair 100A. A plate member 5 is supported in an area including the rear of the base portion 3. Since an item can be placed on the plate member 5, the rear of the base portion 3 and the plate member 5 have a desired weight. Therefore, when a user sits on the seating member 4, the chair 100A is prevented from tipping forward, and the self-supporting stability can be improved.

In addition, a first lower limb accommodation space S11 that is recessed from the front to the rear is formed in the front part of the base part 3 that supports the seating member 4. Therefore, a user seated on the seating member 4 can place their lower limbs in the first lower limb accommodation space S11, improving the freedom of seating posture and comfort when seated.

Third Embodiment
Next, a chair according to a third embodiment of the present invention will be described mainly with reference to FIG.
FIG. 5 is a side view, with a part cut away, of a chair according to a third embodiment of the present invention.
As shown in Fig. 5, in the chair 100B according to this embodiment, a backrest member 42 is disposed on the rear of the upper surface 4u of the seating member 4. The backrest member 42 is configured, for example, in such a manner that a cushioning material is covered with an outer skin. The backrest member 42 is fixed to the seating member 4 by a fixing means (not shown). The backrest member 42 may also be fixed to the panel member 10. The user P1 can sit on the seating member 4 by resting his/her back against the backrest member 42.

In the chair 100B configured in this manner, a seating member 4 is supported on the front of the base portion 3, and a user can sit on the seating member 4, which is the front part of the chair 100B. A plate member 5 is supported in an area including the rear of the base portion 3. Since an item can be placed on the plate member 5, the rear of the base portion 3 and the plate member 5 have a desired weight. Therefore, when a user sits on the seating member 4, the chair 100B is prevented from tipping forward, and the self-supporting stability can be improved.

In addition, a first lower limb accommodation space S11 that is recessed from the front to the rear is formed in the front part of the base part 3 that supports the seating member 4. Therefore, a user seated on the seating member 4 can place his/her lower limbs in the first lower limb accommodation space S11, improving the degree of freedom of the seating posture and the comfort when seated.

(Fourth embodiment)
Next, a chair according to a fourth embodiment of the present invention will be described mainly with reference to FIG.
FIG. 6 is a side view of a chair according to a fourth embodiment of the present invention.
6, a chair 100C according to this embodiment is not provided with the panel unit 1. A user P1 can sit on the seat member 4 with his/her back against the backrest member 42.

In the chair 100C configured in this manner, a seating member 4 is supported on the front of the base portion 3, and a user can sit on the seating member 4, which is the front part of the chair 100C. A plate member 5 is supported in an area including the rear of the base portion 3. Since an item can be placed on the plate member 5, the rear of the base portion 3 and the plate member 5 have a desired weight. Therefore, when a user sits on the seating member 4, the chair 100C is prevented from tipping forward, and the self-supporting stability can be improved.

In addition, a first lower limb accommodation space S11 that is recessed from the front to the rear is formed in the front part of the base part 3 that supports the seating member 4. Therefore, a user seated on the seating member 4 can place his/her lower limbs in the first lower limb accommodation space S11, improving the degree of freedom of the seating posture and the comfort when seated.

Fifth Embodiment
Next, a chair according to a fifth embodiment of the present invention will be described mainly with reference to FIG.
FIG. 7 is a side view of a chair according to a fifth embodiment of the present invention.
As shown in Fig. 7, in the chair 100D according to this embodiment, the seat member 4D protrudes forward from the base body 3D. The front end 4f of the seat member 4D is located forward from the front end 3f of the base body 3D. A first lower limb accommodation space S11 is located behind and below the front end 4f of the seat member 4D on the front side of the base body 3D. The first lower limb accommodation space S11 is located below the front part of the seat member 4D and in front of the base body 3D. The upper surface of the rear part of the base body 3D is a support surface 3u. A user P2 can sit on the support surface 3u, and items can be placed on the support surface 3u.

In the chair 100D configured in this manner, a seating member 4D is supported on the front of the base body 3D, and a user can sit on the seating member 4D, which is the front part of the chair 100D. Since an item can be placed on the support surface 3u at the rear of the base body 3D, the rear part of the base body 3D has a desired weight. Therefore, when a user sits on the seating member 4D, the chair 100D is prevented from tipping forward, and the stability of the chair when standing can be improved.

In addition, a first lower limb accommodation space S11 is disposed behind and below the front end 4f of the seating member 4D on the front side of the base body 3D that supports the seating member 4D. Therefore, a user seated on the seating member 4D can place his/her lower limbs in the first lower limb accommodation space S11, improving the freedom of seating posture and comfort when seated.

(Other Modifications)
Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Addition, omission, substitution, and other modifications of the configuration are possible without departing from the spirit of the present invention. The present invention is not limited by the above description, but is limited only by the scope of the attached claims.

In the above embodiment, a sofa was used as an example of the chair 100, but this is not limited thereto. It may also be a chair used together with a desk or table.

In the above-described embodiment, the plate member 5 is separate from the base portion 3, but this is not limited to the above. At least the upper part of the rear portion of the base body 3A may be configured as a support surface on which an item can be placed.

In the above-described embodiment, the support surface 5u of the plate member 5 is a smooth surface along a horizontal plane, but is not limited to this. The support portion may be made of a material having cushioning properties, and the upper surface of the support portion may be wavy.

In the above-described embodiment, the front surface 311f of the front peripheral wall portion 311 of the base portion 3 is inclined so as to gradually move rearward as it moves downward, but this is not limited to this. It is sufficient that the first lower limb accommodation space is disposed on the front side of the base body supporting the seat, rearward of the front end portion of the seat, and only the lower portion of the front surface of the front peripheral wall portion may be formed so as to be recessed rearward.

In the above-described embodiment, the height H2 from the floor surface F to the support surface 5u of the plate member 5 is lower than the height H1 from the floor surface F to the upper surface 4u of the seating member 4, but this is not limited to this. The height H2 from the floor surface F to the support surface 5u of the plate member 5 may be the same as the height H1 from the floor surface F to the upper surface 4u of the seating member 4, or may be higher than the height H1.

In the above-described embodiment, the weight of the base body 3A is greater than the weight of the seating member 4, but this is not limited to the above. The weight of the base body 3A may be less than the weight of the seating member 4.

In the above-described embodiment, the second lower leg accommodation space S12 recessed from the rear to the front is formed in the rear of the base body 3A supporting the plate member 5, but this is not limited to this. As long as the first lower leg accommodation space is located behind the front end of the seating part on the front side of the base body supporting the seating part, other lower leg accommodation spaces do not need to be formed.

In the above embodiment, the rear surface 312b of the rear peripheral wall portion 312 of the base portion 3 is inclined so as to gradually approach the front as it approaches the bottom, but this is not limited to this. The shape of the rear surface 312b of the rear peripheral wall portion 312 can be set as appropriate.

1A Panel body 3A, 3D Base body 3 Base portion 4, 4D Seating member (seating portion)
4u Upper surface 5 Plate member (support portion)
3u, 5u Support surface 11 First panel member (panel body)
100, 100A, 100B, 100C, 100D Chair 311 Front peripheral wall portion (front wall portion)
312 Rear peripheral wall portion (rear wall portion)
F: Floor surface Df; Front-rear direction Dv; Up-down direction Dw; Width direction S10: Lower leg accommodation space S11; First lower leg accommodation space S12; Second lower leg accommodation space

Claims (9)

A base body that is placed on a floor surface;
a seat supported on a front portion of the base body,
A first lower leg accommodating space is disposed on the front side of the base body supporting the seat portion, rearward of a front end portion of the seat portion,
A chair having a support surface on at least the upper rear portion of the base body, on which an item can be placed. The chair according to claim 1, wherein the first lower leg accommodation space is formed in the front part of the base body supporting the seat, recessed from the front to the rear. The base body is
A base portion that is installed on the floor surface and supports the seating portion;
The chair according to claim 1 , further comprising: a support portion supported at least on a rear portion of the base portion, the support surface being formed on an upper portion of the support portion. a front wall portion that is placed on the floor surface is provided at a front portion of the base body that supports the seating portion,
The front surface of the front wall portion is inclined gradually toward the rear as it extends downward,
The chair according to claim 1 or 2, wherein the first lower leg accommodating space is formed below the front wall portion. The chair according to claim 1 or 2, wherein the height from the floor surface to the support surface is lower than the height from the floor surface to the upper surface of the seat. The chair according to claim 1 or 2, wherein the weight of the base body is greater than the weight of the seating portion. The chair according to claim 2 or 3, which is provided with a panel body disposed between the seating portion and the support surface, the panel body having a plate surface facing in the front-rear direction. The support surface is capable of being seated,
4. The chair according to claim 2 or 3, wherein a second lower leg accommodating space recessed from the rear to the front is formed in a rear portion of the base body on which the support surface is formed. a rear wall portion to be placed on the floor surface is provided at a rear portion of the base body on which the support surface is formed,
The rear surface of the rear wall portion is inclined gradually toward the front as it extends downward,
The chair according to claim 8 , wherein the second lower leg accommodating space is formed below the rear wall portion.

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