Chair

Abstract

To provide a technology suppressing rise of an upper surface of a seat body while fully achieving improvement of sitting comfort on a cushion.SOLUTION: A chair includes a seat body and a support body supporting the seat body. The support body is provided with: leg parts having length vertically; and a pair of long members connected to the leg parts, extending in a back and forth direction, and disposed in the horizontal direction with intervals. The seat body is provided with: a cushion; and a holding part which is disposed across the pair of long members and holds the cushion. The holding part includes: a vertical wall part extending from a part covering upper surfaces of pair of long members to a lower position lower than height where a gap between the pair of long members is minimum in a center part at least in the back and forth direction of the seat body; and a horizontal wall part which is connected to a part at the lower position of the vertical wall part, spreads to a central side in the horizontal direction of the seat body, and configures the supporting surface supporting the cushion from below.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a chair. [Background technology]

[0002] Chairs have been proposed in which a cushion is placed on the seat body that forms the seating surface so that a person sitting on the chair can use the chair comfortably. For example, Patent Document 1 discloses a chair in which a cushion is placed on a seat plate, and the cushion can be attached to the seat plate by inserting a protrusion on the cushion into a through-hole in the seat plate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3178103 Summary of the Invention [Problem to be solved by the invention]

[0004] The thicker the cushion, the more it deforms, which contributes to improving comfort. However, a thick cushion increases the overall thickness of the seat, which raises the position of the top surface of the seat.

[0005] The object of the present disclosure is to propose a technology that suppresses the rise of the upper surface of the seat body while sufficiently achieving improved sitting comfort through the cushion. [Means for solving the problem]

[0006] One aspect of the present disclosure is a chair including a seat body and a support body that supports the seat body. The support body includes legs having vertical lengths and a pair of elongated members connected to the legs, extending in the front-rear direction, and spaced apart in the left-right direction. The seat body includes a cushion and a support portion that straddles the pair of elongated members and holds the cushion. The support portion includes a vertical wall portion that extends from at least a portion of the center of the seat body in the front-rear direction, covering the top surfaces of the pair of elongated members, to a position below the height at which the distance between the pair of elongated members is smallest, and a horizontal wall portion that connects to the lower portion of the vertical wall portion and extends toward the center of the seat body in the left-right direction, forming a support surface that supports the cushion from below.

[0007] In a chair configured in this way, the support surface that supports the cushion is positioned sufficiently lower than the upper end of the elongated member, preventing the upper surface of the seat from rising too high. This makes it possible to prevent the upper surface of the seat from rising while still achieving sufficient improvement in sitting comfort through the cushion.

[0008] In the chair described above, the elongated member may be a columnar or tubular member extending in the front-rear direction. The lower position may be lower than the height of the central axis of the elongated member. In a chair configured in this manner, the depth of the space in which the cushion is placed can be made sufficiently large.

[0009] In the chair described above, the cushion may include a flexible main body and a covering that covers the main body. The holding portion may define a recessed storage portion between the pair of elongated members by the vertical wall portion and the horizontal wall portion. The cushion may be entirely stored in the storage portion when viewed from above.

[0010] In a chair configured in this way, the cushion fits into the storage compartment and is protected by the holding section, and the left and right ends of the cushion are positioned so that they do not reach the outer edges of the seat body. This makes it less likely that the left and right ends of the cushion will come into contact with external objects, reducing the risk of damage.

[0011] In the chair described above, the cushion may be arranged to cover the upper part of the front end of the holding part, so that the legs of the chair user can easily come into contact with the cushion at the front part of the seat body, thereby improving the comfort of sitting in the chair.

[0012] In the chair described above, the side wall may have an opening surrounded by the support surface. At least a portion of the cushion may fit into the opening. In a chair configured in this manner, at least a portion of the cushion can deform downward while reducing the influence of the support surface, allowing the cushion to deform more greatly. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1A is a perspective view of the chair of the embodiment as seen from above, and FIG. 1B is a perspective view as seen from below. [Figure 2] 2A is a perspective view of the cushion, FIG. 2B is a perspective view of the holding portion, and FIG. 2C is a perspective view of the support. [Figure 3] 3A is a front view of the cushion, FIG. 3B is a plan view of the cushion, FIG. 3C is a bottom view of the cushion, and FIG. 3D is a side view of the cushion. [Figure 4] FIG. 2 is a perspective view of the holding portion as seen from below. [Figure 5] 1B is a VV cross-sectional view of FIG. 1A, showing a cross-sectional view of the center of the seat body in the front-rear direction. [Figure 6] FIG. 10 is a perspective view showing a seat body of a modified chair. [Figure 7] 7A and 7B are cross-sectional views taken from the same perspective as FIG. 5, showing a modified chair. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. [1. Embodiment] [1-1. Overall structure] As shown in FIGS. 1A and 1B, the chair 1 has a seat 11, a backrest 13, and a support 15.

[0015] In this embodiment, the configuration of each part may be described using directions such as front-back, left-right, and up-down, but these directions are used merely for convenience of description and do not limit the embodiments of the present disclosure in any way. The above-mentioned directions are based on the position of the seated person when the seated person is normally seated on chair 1. In the following description, height refers to the height from the floor on which chair 1 is placed. Chair 1 is symmetrical left-right.

[0016] [1-2.Support 15] The support body 15 supports the seat body 11. As shown in FIG. 2C, the support body 15 has a pair of left and right pipe bodies 31 formed by bending and welding cylindrical metal pipes. The support body 15 also has a front connecting portion 32 and a rear connecting portion 33, which are metal pipes that connect the pair of pipe bodies 31. Note that the metal pipes that make up the support body 15 are hollow, but solid, columnar members may also be used. In other words, the support body 15 may have a columnar appearance.

[0017] The pipe body 31 has 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 of the pipe body 31 and has a length in the vertical direction. The rear pillar 42 is located at the rear of the pipe body 31 and has a length in the vertical direction. The front pillar 41 and the rear pillar 42 are examples of legs that have a length in the vertical direction.

[0018] The lower pillar 43 is located at the bottom of the pipe body 31, and connects the lower end of the front pillar 41 to the lower end of the rear pillar 42. The lower pillar 43 is disposed along the floor surface on which the chair 1 is placed. 1A and 1B, the left lower pillar 43 is provided with two leg ends 45L spaced apart from each other in the front and rear, and the right lower pillar 43 is provided with two leg ends 45R spaced apart from each other in the front and rear. The leg ends 45L and 45R are configured to be interlockable. As a result, when two chairs 1 are lined up side by side, the two chairs 1 can be connected side by side by interlocking the leg end 45L of one chair 1 with the leg end 45R of the other chair.

[0019] As shown in Fig. 2C, the upper column 44 is located at the upper side of the pipe body 31, and connects the upper end of the front column 41 to the rear connecting part 33 that is connected to the rear column 42. The front column 41 and the upper column 44 are connected via a bent part 46 formed by bending a metal pipe. The rear end of the upper column 44 is connected to the rear connecting part 33 by welding. The upper column 44 is an example of a pair of elongated members that are connected to legs, extend in the front-rear direction, and are spaced apart in the left-right direction.

[0020] The front connecting portion 32 connects the front pillars 41 of the left and right pipe bodies 31 to each other. The rear connecting portion 33 connects the rear pillars 42 of the left and right pipe bodies 31 to each other. A pair of mounting plates 47 extending horizontally are provided on the front side and the center of the left and right sides of the upper column 44. As shown in Fig. 2C, each of the pair of left and right mounting plates 47 has a through hole 49 formed therein. By passing a screw through this through hole 49 from below and screwing it into the base body 11, the base body 11 can be fixed to the support body 15.

[0021] [1-3. Seat 11] The seat body 11 is generally rectangular and forms a seating surface on which a user sits. As shown in Figures 2A and 2B, the seat body 11 has a cushion 61 and a holding portion 63 that holds the cushion 61.

[0022] As shown in Figures 3A to 3D, the cushion 61 has an external appearance of a roughly rectangular plate. The front end is linear and extends left and right, while the rear end is curved and convex rearward. The front end is also curved downward. As shown in Figure 3A, the cushion 61 is curved overall in the left and right direction, with the central portion concave downward. The cushion 61 is also formed so that the corners of the outer periphery on the upper surface side are more rounded than those of the outer periphery on the lower surface side.

[0023] The cushion 61 includes a main body portion 71 and a covering portion 73. The main body portion 71 can be made of a flexible material such as urethane foam, but the material is not particularly limited. The shape of the main body portion 71 is substantially the same as the external shape of the cushion 61. The covering portion 73 is a member that covers the main body portion 71 and protects it. In this embodiment, the covering portion 73 covers the entire main body portion 71, but there may be parts of the main body portion 71 that are not covered by the covering portion 73, such as the underside of the cushion 61.

[0024] A bottom plate having higher rigidity than the main body portion 71 may be provided for fixing the cushion 61 to the holding portion 63 with screws or the like. The bottom plate may be provided inside the covering portion 73 or may be disposed outside the covering portion 73. The bottom plate can be configured to have high flexibility by forming through holes or slits, for example. The bottom plate may also be made of a material that is more rigid than the main body portion 71 but is flexible.

[0025] As shown in Figures 2B and 4, the retaining portion 63 includes an upper plate portion 81 that covers the upper surfaces of the pair of upper pillars 44 and the rear connecting portion 33, an outer wall portion 83 that extends downward from the outer edge of the upper plate portion 81, a vertical wall portion 85 that extends downward from the inner edge of the upper plate portion 81, a horizontal wall portion 87 that is connected to the vertical wall portion 85 and extends toward the center of the seat body in the left-right direction, and a pair of left and right tubular portions 89.

[0026] 5 is a cross-sectional view of the center of the seat body 11 in the front-rear direction. As shown in the cross-sectional view of FIG. 5, the vertical wall portion 85 extends, at least in the center of the seat body 11 in the front-rear direction, from the upper plate portion 81 to a lower position that is lower than the height at which the distance between the pair of upper pillars 44 is smallest. Note that, in this embodiment, the "height at which the distance between the pair of upper pillars 44 is smallest" refers to the height of the central axes of the pair of upper pillars 44 (the height indicated by line A passing through the central axes of the pair of upper pillars 44 in FIG. 5). In other words, the "lower position" refers to a position lower than the height of the central axes of the upper pillars 44.

[0027] The horizontal wall portion 87 is connected to the above-mentioned lower portion of the vertical wall portion 85. The horizontal wall portion 87 constitutes a support surface that supports the cushion 61 from below. In this embodiment, substantially the entire area of ​​the horizontal wall portion 87 serves as the support surface.

[0028] In the retaining portion 63, a deep groove is formed upward by the upper plate portion 81, the outer wall portion 83, and the vertical wall portion 85. The pair of upper pillars 44 and the rear connecting portion 33 are fitted into this groove from below. When the chair 1 is viewed from the left and right sides, the outer wall portion 83 covers most of the upper pillars 44.

[0029] 2B and 5, the holding portion 63 has a vertical wall portion 85 and a horizontal wall portion 87 that form a recessed storage portion 91 located between the pair of upper columns 44. This storage portion 91 has the horizontal wall portion 87 as its bottom surface, and vertical wall portions 85 are provided on the left, right, and rear sides, but no vertical wall portion 85 is provided in the front.

[0030] 1A, when viewed from above, the cushion 61 is entirely housed in the housing portion 91. The cushion 61 is disposed so as to cover the upper part of the front end portion of the holding portion 63.

[0031] The retaining portion 63 is fixed to the support body 15 by inserting the pair of rear pillars 42 into the pair of cylindrical portions 89, resting on the rear connecting portion 33 and the upper pillars 44, and screwing to the mounting plate 47. The specific method for fixing the cushion 61 to the retaining portion 63 is not particularly limited. For example, the cushion 61 may be fixed to the retaining portion 63 by screwing, hook-and-loop fasteners, adhesive, or the like.

[0032] [1-4. Other features] 1A and 1B, the backrest 13 is a plate-like member that extends vertically. The backrest 13 has a pair of insertion holes on the left and right that are provided at the bottom end and have a depth in the upward direction. A pair of rear pillars 42 are inserted into these insertion holes, thereby fixing the backrest 13 to the support body 15.

[0033] The chairs 1 are configured so that chairs 1 of the same shape can be stacked vertically. In this case, the leg ends 45L and 45R of the upper chair 1 abut on the upper surface of the lower pillar 43 of the lower chair 1.

[0034] [1-5.Effects] According to the embodiment described above in detail, the following effects can be obtained. (1a) In chair 1, seat body 11 includes cushion 61 and a holding portion 63 that holds cushion 61. This holding portion 63 includes, at least in the center of the front-to-rear direction of seat body 11, a vertical wall portion 85 that extends from a portion that covers the upper surfaces of the pair of upper pillars 44 to a lower position that is lower than the height at which the distance between the pair of upper pillars 44 is smallest, and a horizontal wall portion 87 that connects to the lower position of vertical wall portion 85 and expands toward the center of the seat body 11 in the left-to-right direction, forming a support surface that supports the cushion 61 from below.

[0035] In such a chair 1, the support surface that supports the cushion 61 is positioned sufficiently lower than the upper end of the upper column 44, preventing the position of the upper surface of the cushion 61 from becoming too high. Therefore, it is possible to prevent the upper surface of the seat body 11 from rising while still achieving sufficient improvement in sitting comfort with the cushion 61. As a result, it is possible to prevent, for example, the seating surface of the chair 1 from becoming too high, or the seats 11 of upper and lower chairs 1 from coming into contact with each other when stacked.

[0036] (1b) In the chair 1, the upper pillar 44 is a cylindrical member that extends in the front-to-rear direction. The above-mentioned lower position is lower than the height of the central axis of the upper pillar 44. Therefore, in the chair 1, the depth of the space in which the cushion 61 is placed can be made sufficiently large. In addition, because the cushion 61 fits deeply into the holding portion 63, it is possible to prevent the cushion 61 from shifting position.

[0037] (1c) In chair 1, cushion 61 includes flexible main body 71 and covering portion 73 that covers main body 71. Holding portion 63 has vertical wall portion 85 and horizontal wall portion 87 that form recessed storage portion 91 located between a pair of upper columns 44. When viewed from above, cushion 61 is entirely contained in storage portion 91.

[0038] Therefore, at least the left and right ends of the cushion 61 are positioned so as not to reach the outer edges of the seat body 11. As a result, the left and right ends of the cushion 61 are protected by the holding parts 63 and are less likely to come into contact with anything other than the chair 1, reducing the risk of damage to the cushion 61.

[0039] (1d) In chair 1, cushion 61 is arranged to cover the upper front end of holding portion 63. This makes it easier for the legs of a user of chair 1 to come into contact with cushion 61 at the front end of seat body 11, thereby improving the comfort of sitting on chair 1. Note that in chair 1 of this embodiment, there is no upper plate portion 81 or vertical wall portion 85 in front of holding portion 63, and storage portion 91 is formed up to the front end of holding portion 63. Therefore, even when cushion 61 is stored in storage portion 91, cushion 61 can cover the front end of holding portion 63.

[0040] Here, if the holding portion is configured so that no storage section is formed at the front end of the holding portion, for example by placing an upper plate section in front of the holding portion, the cushion can be configured to extend (protrude) forward from the storage section, thereby covering the front end of the holding portion.

[0041] [2. Other embodiments] Although the embodiments of the present disclosure have been described above, it goes without saying that the present disclosure is not limited to the above embodiments and can take various forms as long as they fall within the technical scope of the present disclosure.

[0042] (2a) The specific configuration of chair 1 is not particularly limited. For example, a non-stackable chair may be provided with a seat body as in the embodiment. Furthermore, although upper pillar 44 is exemplified as an elongated member, the elongated member is not limited to a cylindrical or cylindrical shape, and may be, for example, a rod-shaped member with a substantially rectangular cross section.

[0043] (2b) In the above embodiment, the cushion 61 is arranged so as to fit within the storage section 91 when viewed from above, but the cushion may be configured to extend beyond the storage section. Also, the cushion may be configured to cover the entire upper surface of the seat body.

[0044] In the above embodiment, the storage section 91 does not have a vertical wall section 85 on the front side, and the cushion 61 is arranged to cover the upper part of the front end of the holding section 63. However, as shown in FIG. 6, the holding section 163 may be configured such that the cushion 161 is surrounded on the front, rear, left and right sides by the upper plate section 181 (and the vertical wall section), and the cushion 161 is not arranged at the front end of the holding section 163. With such a configuration, people or objects are less likely to come into contact with the front end of the cushion 161, and therefore damage to the front end of the cushion 161 can be suppressed.

[0045] (2c) In the above embodiment, the cushion 61 is configured such that the side wall portion 87 serves as a support surface. Alternatively, the seat body may be configured as shown in FIG. 7A . In this example, an opening 289 is formed in the side wall portion 287. The cushion 261 includes a main body portion 271, a covering portion 273, and a bottom plate 275. The bottom plate 275, together with the main body portion 271, is covered by the covering portion 273. The bottom plate 275 is more rigid than the main body portion 271 but is flexible. Therefore, the shape of the cushion 261 is maintained when not subjected to a large load, such as when not seated, but deforms when subjected to a large load, such as when seated. With this configuration, at least a portion of the cushion 261 can deform downward by virtue of the opening 289, reducing the effect of the support surface. This allows the cushion 261 to deform more significantly.

[0046] 7B, cushion 261a may be configured so that a portion of cushion 261a fits into opening 289. Bottom plate 275a may have a shape in which a portion thereof protrudes downward to fit into opening 289. With this configuration, cushion 261a is less likely to slip relative to side wall portion 287.

[0047] (2d) In the above embodiment, the horizontal wall 87 is connected to a portion below the vertical wall 85 at the center of the seat body 11 in the front-to-rear direction, expanding toward the center of the seat body 11 in the left-to-right direction to form a support surface that supports the cushion 61 from below. However, the above-described configuration does not have to be present at positions other than the center of the seat body in the front-to-rear direction. By having the above-described configuration at least at the center of the seat body in the front-to-rear direction, it is possible to prevent the position of the upper surface of the seat body from becoming too high.

[0048] (2e) Multiple functions possessed by one component in the above embodiments may be realized by multiple components, or one function possessed by one component may be realized by multiple components. Also, multiple functions possessed by multiple components may be realized by one component, or one function realized by multiple components may be realized by one component. Also, part of the configuration of the above embodiments may be omitted. Also, at least part of the configuration of the above embodiments may be added to or substituted for the configuration of another of the above embodiments. [Explanation of symbols]

[0049] 1...chair, 11...seat body, 13...backrest, 15...support body, 31...pipe body, 32...front connecting portion, 33...rear connecting portion, 41...front column, 42...rear column, 43...lower column, 44...upper column, 45L...leg end, 45R...leg end, 46...bending portion, 47...mounting plate, 49...through hole, 61...cushion, 63...holding portion, 71...main body, 73...covering portion, 8 1...raising plate portion, 83...outer wall portion, 85...vertical wall portion, 87...horizontal wall portion, 89...tubular portion, 91...storage portion, 101...chair, 161...cushion, 163...holding portion, 181...raising plate portion, 261...cushion, 261a...cushion, 271...main body portion, 273...covering portion, 275...bottom plate, 275a...bottom plate, 287...horizontal wall portion, 289...opening

Claims

1. A chair comprising a seat body and a support body that supports the seat body, The support body includes a leg portion having a length in the vertical direction, and a pair of elongated members connected to the leg portion, extending in the front-rear direction, and arranged with a gap in the left-right direction, The seat body is Cushion and a holding portion disposed across the pair of elongated members and holding the cushion; The holding portion is a vertical wall portion extending from a portion covering the upper surfaces of the pair of elongated members at least in the center portion of the seat body in the front-rear direction to a lower position lower than the height at which the gap between the pair of elongated members is smallest; A chair comprising a horizontal wall portion that is connected to the portion of the vertical wall portion located at the lower position, extends toward the center of the seat body in the left-right direction, and forms a support surface that supports the cushion from below.

2. 2. The chair of claim 1, The elongated member is a columnar or tubular member extending in the front-rear direction, The lower position is a position lower than the height of the central axis of the elongated member.

3. 2. The chair of claim 1, The cushion includes a flexible main body portion and a covering portion that covers the main body portion, the holding portion defines a recessed accommodation portion located between the pair of elongated members by the vertical wall portion and the horizontal wall portion; The cushion is entirely accommodated in the accommodation portion when viewed from above.

4. 2. The chair of claim 1, The cushion is positioned to cover the upper part of the front end of the holding portion.

5. 2. The chair of claim 1, The lateral wall portion has an opening formed therein and surrounded by the support surface, The cushion fits at least partially into the opening.

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