JP2019129977A - Chair and method of manufacturing the same - Google Patents

Abstract

To prevent a component support member from falling without extremely enhancing solidity of a part connecting the component support member and the chair, in the chair having the component support member that can support attachments in an extension end part.SOLUTION: The chair 1 according to an embodiment includes: a seating face constituting member 4 that has a seating face part 20 on which a sitting person can sit on and a first surface part 32 opposing the floor surface 2 on which the chair 1 is installed; a load support structure 3 that has a second surface part 16 opposing the first surface part 32 and that supports the first surface part 32 of the seating face constituting member 4; and a component support member 5 that is extended to the side of the seating face part 20 through a passage which is formed between the first surface part 32 and the second surface part 16, and that can support attachments with an extension end part 5a. The component support member 5 is provided with a supported part that is held between the first surface part 32 and the second surface part 16 and that is supported by the seating face constituting member 4.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a chair and a method for manufacturing the chair.

2. Description of the Related Art Conventionally, in a chair, a top board having a work surface facing upward is provided on the side of the seat.
For example, in Patent Document 1, the outer shell is sandwiched between a reinforcing member provided on the upper surface of the outer shell and an armrest that is an optional member attached to the lower surface side portion of the outer shell.
For example, in Patent Document 2, a top plate for a memo stand is attached to a tip portion on one end side of an L-shaped arm, and a linear portion on the other end side is an attachment portion to the chair, and two fixing brackets fixed to the chair The arm is supported by.

Japanese Patent No. 3580863 JP-A-8-182578

By the way, in such a chair, there exists a tendency for the connection part to the chair of the member which supports a top plate (henceforth "the top plate support member"), and a top plate to leave | separate in the chair width direction. When the connecting part and the top plate are far apart in the chair width direction, the load from above (for example, the input load from the arm of the seated person) input to the top board is greatly dropped from the connecting part (for example, the top plate). It is easily converted into a moment in the direction in which the bolt connecting the plate support member to the chair is removed. Therefore, it is necessary to enhance the robustness of the connection site.
However, if the robustness of the connection portion is extremely increased, the top plate support member may be easily damaged due to local application of the load caused by the input load.

  In view of the circumstances as described above, the present invention extremely enhances the robustness at the connecting portion between the component support member and the chair in the chair including the component support member that can support the accessory component at the extended end. The purpose is to prevent the component support member from falling off.

  The chair according to one aspect of the present invention includes a seat surface component having a seat surface portion on which a seated person can sit, a first surface portion facing a chair installation surface on which the chair is installed, and the first surface portion. A load supporting structure that supports the first surface portion of the seat surface component, and a passage formed between the first surface portion and the second surface portion. And a component support member that extends to the side of the seat surface portion and is capable of supporting an accessory component at the extended end portion, and the component support member includes the first surface portion and the second surface portion. It is characterized by including a supported portion that is sandwiched and supported by at least one of the seat surface constituent member and the load support structure.

  According to this configuration, when the component support member is sandwiched between a pair of surface portions (first surface portion and second surface portion) having a certain spread, a load is input to the extended end portion of the component support member. Even if it exists, since the load resulting from an input load can be received by a pair of surface part, drop-off | omission of a component support member can be prevented. In addition, since the supported portion of the component support member is supported by at least one of the seat surface component member and the load support structure, it is not necessary to extremely increase the robustness at the connection portion between the component support member and the chair. . Therefore, it is possible to prevent the component support member from falling off without extremely increasing the robustness at the connecting portion between the component support member and the chair.

In one aspect of the present invention, the supported portion is sandwiched between an upper surface portion of the load supporting structure as the second surface portion and a lower surface portion of the seat surface constituent member as the first surface portion, A top plate as the accessory may be supported on the extended end portion.
According to this configuration, even when a load from above is input to the top plate, the component support member is sandwiched between the upper surface portion of the load support structure and the lower surface portion of the seat surface configuration member. Since the load caused by the load can be received by a pair of upper and lower surface portions (upper surface portion and lower surface portion), the component support member can be removed without extremely increasing the robustness at the connection portion between the component support member and the chair. Can be prevented.

1 aspect of this invention WHEREIN: The said component support member has the said to-be-supported part, and is extended upwards from the said channel | path side arrangement | positioning part by the side of the said channel | path side arrangement | positioning part arrange | positioned in the said channel | path, and the said seat surface part. And the seat surface component includes an intermediate path forming part that forms an intermediate path through which the side extending part passes at a position above the supported part. May be.
According to this configuration, even when a load is input to the extended end portion of the component support member due to the side extended portion of the component support member passing through the intermediate path, the load caused by the input load Can be received by the intermediate path forming portion, so that it is possible to suppress an excessive load from being applied to the supported portion of the component support member. Therefore, it is possible to more effectively prevent the component support member from falling off without extremely increasing the robustness at the connecting portion between the component support member and the chair.

A method for manufacturing a chair according to an aspect of the present invention is the above-described method for manufacturing a chair, wherein a first step of connecting the component support member to the seat surface constituting member to produce an assembly, and the first And a second step of connecting the assembly to the load support structure after the step.
According to this configuration, the assembly support can be connected to the load support structure after the component support member is connected to the seat surface component in advance and the assembly is manufactured, so that the assembly efficiency of the chair is improved. .

  According to the present invention, in a chair provided with a component support member capable of supporting an accessory component at the extended end portion, the robustness at the connecting portion between the component support member and the chair is not significantly increased, and the component support member Dropout can be prevented.

The perspective view of the chair which concerns on embodiment. The front view of the chair which concerns on embodiment. The disassembled perspective view of the chair which concerns on embodiment. The right view of the chair which concerns on embodiment. The top view of the chair concerning an embodiment. The front view of the chair lower part which concerns on embodiment. The left view containing the VII-VII cross section of FIG. The top view containing the VIII-VIII cross section of FIG. The perspective view of the outer shell right side part concerning an embodiment. The front view containing the XX cross section of FIG. The perspective view of the armrest structural member which concerns on embodiment. The right view containing the XII-XII cross section of FIG. The right view containing the XIII-XIII cross section of FIG. The left view containing the XIV-XVI cross section of FIG. The top view containing the XV-XV cross section of FIG. The left view containing the XVI-XVI cross section of FIG. The right view including the cross section corresponding to FIG. 13 which shows the intermediate | middle support member which concerns on the modification of embodiment. The perspective view of the chair which concerns on the modification of embodiment. The perspective view of the chair which concerns on the modification of embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. In each figure, the same code | symbol is attached | subjected about the same structure. In the embodiment, as an example of a chair, a chair provided with a top plate having a work surface facing upward on the side of the seat will be described. In the embodiment, the chair installation surface on which the chair is installed is an indoor flat floor surface.

[Chair 1]
As shown in FIG. 1, the chair 1 includes a load support structure 3 that stands on a floor surface 2 (see FIG. 2), a seat surface component 4 having a seat surface portion 20 on which a seated person can sit, and a seat surface portion 20. And a component support member 5 that can be supported on the top plate 6 (accessory) by the extended end portion 5a.

  In the following description, the direction in which the seated person seated on the seat surface portion 20 faces forward will be described as “front”, and the direction opposite to the front will be described as “rear”. That is, let the direction orthogonal to the paper surface shown in FIG. 2 be the “front-rear direction” or the “depth direction of the chair 1”. Further, the normal direction (vertical direction) of the floor surface 2 is defined as “vertical direction” or “height direction of the chair 1”. In addition, a direction orthogonal to the front-rear direction and the up-down direction is referred to as a “left-right direction” or a “width direction of the chair 1”. In the figure, the forward direction is indicated by an arrow FR, the upper direction is indicated by an arrow UP, and the left side is indicated by an arrow LH.

[Load support structure 3]
As shown in FIG. 2, the load support structure 3 includes a leg portion 10 set on the floor surface 2 and a support base 15 attached to an upper portion of the leg portion 10. In FIG. 2, illustration of the top plate 6 and the like is omitted.

  As shown in FIG. 3, the leg portion 10 includes a leg main body 11 in which a three-pronged (Y-shaped) connecting member is connected to an annular annular member, and a central portion of the leg main body 11 (a central portion of the connecting member). Columnar pedestal 12 rising from

  The pedestal 12 includes an outer cylinder 12a fixed to the leg main body 11, and an inner cylinder 12b positioned on the radially inner side of the outer cylinder 12a. The inner cylinder 12b is supported by the outer cylinder 12a so as to be rotatable around the axis of the pedestal 12. A support base 15 is fixedly supported on the upper end portion of the inner cylinder 12b. The pedestal 12 may be configured to be extendable in the vertical direction by incorporating a gas spring.

  As shown in FIG. 2, the support base 15 supports the first surface portion 32 of the seat surface constituent member 4 from the floor surface 2 side. The first surface portion 32 is a lower surface portion of the seat surface constituent member 4. The support base 15 has a shape in which the front-rear width and the left-right width increase as it approaches the first surface portion 32 from the upper portion of the leg portion 10. The support base 15 includes a second surface portion 16 that faces the first surface portion 32 of the seat surface component 4 from the floor surface 2 side. The second surface portion 16 is an upper surface portion of the support base 15. In the top view of FIG. 5, the support base 15 has a triangular shape that protrudes rearward.

[Seat surface component 4]
As shown in FIG. 1, the seat surface component 4 includes a seat surface portion 20 on which a seated person can sit, a backrest portion 21 extending upward from the rear end portion of the seat surface portion 20, and an upper end of the backrest portion 21. A head support portion 22 that extends upward from the head portion, and an armrest portion 23 that extends upward from the left and right end portions of the seat surface portion 20.

  In a cross-sectional view orthogonal to the width direction of the chair 1 (a cross-sectional view in FIG. 7 in which a main part of the chair 1 is cut at the center in the width direction), the seat surface portion 20 and the backrest portion 21 are shaped to intersect each other. In the cross-sectional view of FIG. 7, the seat surface constituent member 4 has a J-shape.

  In the cross-sectional view orthogonal to the vertical direction (the cross-sectional view of FIG. 8 in which the backrest 21 of the chair 1 is cut in a plane parallel to the horizontal plane), the seat surface component 4 has a central portion in the width direction that is an outer portion in the width direction. It has a concave shape located on the far side.

As shown in FIG. 1, on the upper side of the seat surface portion 20, a cushion and an outer skin material are arranged to form a seat surface 20a.
On the front side of the backrest portion 21, a cushion and a skin material are disposed to form a backrest surface 21a.
The cushion and the skin material are not disposed on the upper surface of the seat surface portion 20 and the front side of the backrest portion 21, and the core material (the inner shell 30 shown in FIG. 3) is in direct contact with the seated person's body. Also good.

  In the top view of FIG. 5, the head support portion 22 has an inverted U shape that covers the head of the seated person from the rear and the left and right sides. The left and right side walls in the head support part 22 function as a sound insulation part that blocks sound from the outside. As shown in FIG. 1, on the front side of the head support portion 22, a cushion and a skin material are arranged to form a head support surface 22 a.

In the front view of FIG. 2, the armrest portion 23 has a box shape with a wider width in the left-right direction toward the upper side. As shown in FIG. 1, a cushion and a skin material are arranged on the front side, the upper side, and the inner side in the width direction of the armrest 23 to form a load receiving surface 23a.
In FIG. 1, the surface (skin material) of the cushion is indicated by a broken line.

  As shown in FIG. 3, the seat surface constituting member 4 includes a core member (hereinafter also referred to as “inner shell 30”) as a strength member that supports the load of the seated person, and an exterior disposed on the outer side of the inner shell 30. A material (hereinafter also referred to as “outer shell 40”). In FIG. 3, only the right half part of the inner shell 30 and the outer shell 40 is shown, and illustration of the left half part is omitted.

  The inner shell 30 includes an inner main body 31 that constitutes a support body for the seat surface portion 20, the backrest portion 21, and the head support portion 22 (see FIG. 1), and an armrest component member 35 that constitutes an armrest portion 23 (see FIG. 1). And comprising.

  The outer shell 40 includes an outer body 41 that covers the inner body 31 from the outside, and an armrest cover member 45 that covers the armrest component 35 from the outside.

  The inner shell 30 has higher rigidity than the outer shell 40. The inner body 31 is formed thicker than the outer body 41. The left and right side portions of the inner main body 31 and the outer main body 41 have outer shapes that form an arc shape that protrudes rearward and downward.

  In the cross-sectional view of FIG. 10, the armrest component 35 is L-shaped. The armrest component member 35 is formed in a plate shape having a bent portion 35v extending upward from the outer side of the inner main body 31 so as to be separated from the armrest cover member 45 in the width direction and bending outward from the extension end in the width direction. ing.

  The armrest constituent member 35 forms a standing portion 36 that rises from the outer side of the inner main body 31 so as to form a gap 35s between the inner surface of the armrest cover member 45 in the width direction, and a bent portion 35v together with the standing portion 36. The outward extending portion 37 extending outward in the width direction from the upper end portion of the standing portion 36, and the outward extending portion 37 extending outward in the width direction from the front end portion of the standing portion 36. A front-side extending portion 38 (see FIG. 12, a second outward extending portion) that extends in a direction adjacent to the front end portion and toward the outer side portion of the inner main body 31. In FIG. 10, reference numeral 37 h denotes an opening that opens in the vertical direction so that the component support member 5 can be inserted through the outwardly extending portion 37.

In the cross-sectional view of FIG. 10, in the armrest component 35, the upright portion 36 and the outwardly extending portion 37 have bent shapes that intersect each other. In the embodiment, the upright portion 36 and the outward extending portion 37 have an L-shape that is substantially orthogonal to each other.
In the cross-sectional view of FIG. 10, in the outer shell 40, the outer main body 41 and the armrest cover member 45 have curved shapes that are continuous with each other in an arc shape protruding downward.
In the cross-sectional view of FIG. 12, the front extending portion 38 of the armrest component 35 has a shape extending in the front and lower direction from the front end portion of the outward extending portion 37 extending in the front-rear direction to form a convex arc shape in the front upper direction. ing.

[Reinforcing rib 60]
The armrest component member 35 is provided with a reinforcing rib 60 as a reinforcing element that protrudes from both the standing portion 36 and the outwardly extending portion 37 toward the gap 35s. In the cross-sectional view of FIG. 12, the reinforcing ribs 60 are formed in a lattice shape so as to avoid the component support member 5. In the cross-sectional view of FIG. 12, the reinforcing rib 60 includes a front-rear extending rib 61 extending linearly in the front-rear direction, a vertical extending rib 62 extending linearly in the up-down direction, a standing portion 36 and an outward extending portion 37. Connecting ribs 63 (connection reinforcing portions). The reinforcing rib 60 connects the standing portion 36 and the outward extending portion 37.

  In the cross-sectional view of FIG. 12, a plurality of front and rear extending ribs 61 are provided at intervals in the vertical direction. In the cross-sectional view of FIG. 12, a plurality of the vertically extending ribs 62 are provided at intervals in the front-rear direction. 12, a plurality of connecting ribs 63 are provided at intervals in the extending direction of the outward extending portion 37 and the front extending portion 38. In the cross-sectional view of FIG. 12, a part of the plurality of connecting ribs 63 (portions connected to the lower surface of the outward extending portion 37) is above the uppermost front / rear extending rib 61 (uppermost front / rear extension). In the upper and lower portions between the rib 61 and the outward extending portion 37), the rib 61 extends in parallel with the vertically extending rib 62.

  As shown in FIG. 10, the armrest cover member 45 is provided with outer side ribs 46 that protrude from the inner side surface of the armrest cover member 45 toward the inner side in the width direction (gap 35 s). As shown in FIG. 9, the outer side rib 46 has an arc shape along the extending direction of the outward extending portion 37 and the front extending portion 38 (see FIG. 12) in the armrest component 35. In FIG. 9, reference numeral 46 h denotes a plurality of through-holes that are opened in the thickness direction of the outer side rib 46 and are provided at intervals in the extending direction of the outer side rib 46.

[Part support member 5]
As shown in FIG. 6, the component support member 5 extends to the side of the seat surface portion 20 via a passage 25 formed between the first surface portion 32 and the second surface portion 16, and extends to the end. The top plate 6 (see FIG. 1) can be supported by the portion 5a. The component support member 5 is sandwiched between the first surface portion 32 and the second surface portion 16. The component support member 5 includes a supported portion 55 (see FIG. 5) supported by the seating surface constituting member 4.

  In the front view of FIG. 6, the component support member 5 has a U shape. For example, the component support member 5 is formed by bending a pipe material having an annular cross section. The component support member 5 includes a passage-side arrangement portion 50 arranged in the passage 25 and a side extension portion 51 extending upward from the passage-side arrangement portion 50 on the side of the seat surface portion 20.

  The passage-side arrangement portion 50 extends linearly in the horizontal direction (width direction) as the direction along the first surface portion 32. A bracket 55 (see FIG. 5) as a supported portion is provided in the passage-side arrangement portion 50 (hereinafter also referred to as “horizontal extension portion 50”). For example, the bracket 55 is fixed to the horizontal extension 50 by welding.

  The side extending portion 51 connects a vertically extending portion 52 that extends linearly in the up and down direction, a lower end portion of the vertically extending portion 52, and an outer end portion in the width direction of the horizontal extending portion 50, and And an inclined connecting portion 53 that inclines in the direction.

  The vertically extending portion 52 is provided with a second bracket 56 extending toward the armrest component 35 (see FIG. 12). For example, the second bracket 56 is fixed to the vertical extending portion 52 by welding. In the side view of FIG. 12, the second bracket 56 extends forward from the vertically extending portion 52.

  As shown in FIG. 6, a pair of upper and lower extending portions 52 are provided on the left and right sides so as to extend upward from both end portions of the horizontal extending portion 50. The upper end portion of the vertically extending portion 52 functions as an extending end portion 5a that supports the top plate 6 (see FIG. 1).

  In the front view of FIG. 6, the inclined connecting portion 53 is inclined linearly so as to be located outward in the width direction from the outer end in the width direction of the horizontal extension portion 50 toward the upper side. In the side view of FIG. 4, the inclined connecting portion 53 is linearly inclined so as to be positioned forward from the outer end portion in the width direction of the horizontal extending portion 50 toward the upper side.

[Intermediate path forming unit 34]
As shown in FIG. 13, the seat surface constituting member 4 has a laterally extending portion 51 (specifically, an inclined connecting portion 53) in the component support member 5 at a position above the bracket 55 (see FIG. 14). An intermediate path forming unit 34 that forms an intermediate path 34s (space) to be passed is provided. In the cross-sectional view of FIG. 13, the intermediate path forming portion 34 has an inverted V shape that protrudes forward and upward. The intermediate path forming portion 34 is inclined so as to be positioned outward in the width direction toward the upper side along the inclination of the inclined connecting portion 53. The intermediate path forming portion 34 functions as a wall portion that restricts the movement of the inclined connecting portion 53 in the front-rear direction, the width direction inward, and upward. In the embodiment, a minute gap is provided between the intermediate path forming portion 34 and the inclined connecting portion 53.

[Fixing structure of inner body 31 and armrest component 35]
As shown in FIG. 11, the armrest component member 35 is provided with a downward arc-shaped extension portion 36 a that extends downward in an arc shape while avoiding the component support member 5 (see FIG. 12) and the reinforcing rib 60. .

  As shown in FIG. 7, the downward arc-shaped extension part 36a (see FIG. 11) of the armrest component 35 is fixed to the arc-shaped side part 31a of the inner main body 31 with a plurality of bolts 36j. In FIG. 11, reference numeral 36 h denotes a plurality of bolt insertion holes that open in the width direction and are provided at intervals along the downward arcuate extension 36 a. In FIG. 15, reference numeral 36 k indicates a cylindrical boss portion that protrudes from the downward arc-shaped extension portion 36 a toward the arc-shaped side portion 31 a in the inner main body 31.

[Fixing structure of inner body 31 and component support member 5]
As shown in FIG. 5, the inner main body 31 includes an inner lower surface portion 32 along a horizontal plane and a component support member coupling portion 33 that can couple the component support member 5.
The inner lower surface portion 32 constitutes a lower surface portion (first surface portion) of the seat surface constituent member 4.

  In the sectional view of FIG. 14, the component support member connecting portion 33 bulges upward from the inner lower surface portion 32. In the top view of FIG. 5, the component support member connecting portion 33 has a rectangular shape that follows the outer shape of the bracket 55. In FIG. 14, reference numerals 33h and 55h denote bolt insertion holes that open in the vertical direction and through which the bolts 55j for fixing the bracket 55 are inserted.

  As shown in FIG. 14, the component support member 5 (specifically, the horizontal extending portion 50) has bolts 55 j inserted through the component support member connecting portion 33 and the bolt insertion holes 33 h and 55 h of the bracket 55 from below, The upper projecting portion (male screw portion) of the bolt 55j is fixed by being screwed onto a nut (female screw portion) (not shown). In the embodiment, the component support member 5 is fixed to the inner main body 31 by a pair of left and right component support member connecting portions 33 via brackets 55 at one place (two places on the left and right in total) (see FIG. 5). ).

[Fixing structure of armrest component 35 and component support member 5]
As shown in FIG. 11, the armrest component member 35 includes a second component support member coupling portion 65 that can couple the component support member 5 (specifically, the vertically extending portion 52, see FIG. 12). The second component support member connecting portion 65 protrudes at a height lower than the reinforcing rib 60 from the standing portion 36 toward the gap 35 s. 12, reference numeral 56h denotes a bolt insertion hole that opens in the width direction and through which a bolt (not shown) for fixing the second bracket 56 is inserted.

The vertically extending portion 52 of the component support member 5 has a bolt inserted through the bolt insertion hole 56h of the second bracket 56 from the outside in the width direction, and the inward protruding portion (male screw portion) of the bolt in the width direction supports the second component. It is fixed by being screwed onto the female screw portion 65m of the member connecting portion 65. In the embodiment, the component support member 5 is disposed at one place (two places on the left and right in total) via the second bracket 56 at the pair of left and right second component support member coupling portions 65 with respect to the pair of left and right armrest constituent members 35. It is fixed.
The component support member 5 is a reinforcing member of the armrest portion 23 (see FIG. 2), and functions as an attachment member when an additional functional member (accessory) such as the top plate 6 is attached.

[Fixing structure of outer main body 41 and armrest cover member 45]
As shown in FIG. 9, the armrest cover member 45 has an inner arc shape extending inward in the width direction from the rear lower end portion of the armrest cover member 45 in an arc shape along the arc-shaped side portion 43 of the outer main body 41. An extending portion 47 is provided.

  The inward arc-shaped extending portion 47 in the armrest cover member 45 is fixed to the arc-shaped side portion 43 in the outer main body 41 with a plurality of bolts 47j. In FIG. 9, reference numeral 47 a denotes a step portion that is provided in plural along the inward arc-shaped extension portion 47 at intervals and forms a seating surface of the bolt 47 j. The front wall of the stepped portion 47a is provided with a bolt insertion hole (not shown) that opens in the front-rear direction. In FIG. 9, reference numeral 43 a indicates a cylindrical boss portion that protrudes from the arc-shaped side portion 43 of the outer main body 41 toward the bolt insertion hole of the inward arc-shaped extension portion 47.

[Engagement structure of inner body 31 and outer body 41]
As shown in FIG. 2, a rectangular inner side opening 31 h that opens in the front-rear direction and has a length in the up-down direction is provided in the upper portion of the inner body 31. A plurality of inner side openings 31h are provided at intervals in the vertical direction and the width direction.

  As shown in FIG. 7, an outer side convex portion 44 that protrudes toward the inner side opening 31 h is provided on the upper portion of the outer main body 41. A plurality of outer side convex portions 44 are provided at intervals in the vertical direction and the width direction so as to correspond to the inner side opening 31h.

  In the cross-sectional view of FIG. 16, a crank-shaped support fitting 67 is fixed to the outer convex portion 44 with a pair of upper and lower bolts 67j. In the cross-sectional view of FIG. 16, the support metal fitting 67 has a bolt coupling portion 67 a extending in the vertical direction along the front surface of the outer convex portion 44, and upward after extending forward from the upper end portion of the bolt coupling portion 67 a. An inner receiving portion 67b that is bent and extended, and then extends slightly inclined forward and upward.

  For example, the inner main body 31 and the outer main body 41 can be engaged with each other by inserting the inner receiving portion 67b in the outer main body 41 from the rear lower side into the inner side opening 31h in the inner main body 31.

  As shown in FIG. 14, the outer main body 41 includes an outer lower surface portion 42 along the inner lower surface portion 32 of the inner main body 31. The outer lower surface portion 42 faces the inner lower surface portion 32 of the inner main body 31 from below. In FIG. 14, reference numerals 32 h and 42 h indicate bolt insertion holes that open in the vertical direction and through which the bolts 42 j for fixing the outer main body 41 are inserted.

  As shown in FIG. 14, the outer main body 41 is inserted into the bolt insertion holes 32h and 42h of the inner main body 31 (specifically, the inner lower surface portion 32) and the outer main body 41 (specifically, the outer lower surface portion 42) from below. The bolt 42j is inserted, and the upper projecting portion (male screw portion) of the bolt 42j is fixed by being screwed to a nut (female screw portion) (not shown). In the embodiment, the outer main body 41 is fixed to the inner main body 31 with a pair of left and right bolts 42j (one at each of the left and right in total) (see FIG. 5).

[Fixing structure of inner body 31 and support base 15]
As shown in FIG. 14, the support base 15 is a seat surface component connecting portion that can connect the seat surface constituent member 4 in a state where the component support member 5 is connected to the component support member connecting portion 33 of the inner body 31. 17. In the cross-sectional view of FIG. 14, a pair of seating surface component connecting portions 17 are arranged apart from each other in the front-rear direction via the component support member 5. In the cross-sectional view of FIG. 14, the seat surface component connecting portion 17 bulges toward the inner lower surface portion 32 of the inner main body 31 via the outer main body 41.

  The seat surface component connecting portion 17 includes a front side connecting portion 18 positioned at the front portion of the support base 15 and a rear side connecting portion 19 positioned at the rear portion of the support base 15. In FIG. 14, reference numerals 18h and 42f denote bolt insertion holes that open in the vertical direction and through which the bolts 18j for fixing the front portion of the support base 15 are inserted. In FIG. 14, reference numerals 19 h and 42 r indicate bolt insertion holes that open in the vertical direction and through which the bolts 19 j for fixing the rear portion of the support base 15 are inserted.

  As shown in FIG. 14, the seat surface constituent member 4 includes the seat surface constituent member connecting portion 17 (specifically, the front side connecting portion 18 and the rear side connecting portion 19) and the outer main body 41 (specifically, the outer lower surface portion 42. ) Are inserted into the bolt insertion holes 18h, 42f (19h, 42r) from below, and the upper projecting portion (male screw portion) of the bolt 18j (19j) is connected to the inner body 31 (specifically, the inner body 31). The lower surface portion 32) is fixed by being screwed to the female screw portion 32f (32r). In the embodiment, the inner main body 31 has a pair of front and rear seat surface component connecting portions 17 (the front side connecting portion 18 and the rear side connecting portion 19) with respect to the support base 15 through the outer main body 41 (one right and left side). It is fixed at a total of four locations).

[Manufacturing method of chair 1]
Hereinafter, an example of the manufacturing method of the chair 1 of embodiment is demonstrated.
The manufacturing method of the chair 1 according to the embodiment includes a first step in which the component support member 5 is connected to the seat surface constituent member 4 to produce an assembly, and the assembly is connected to the load support structure 3 after the first step. And a second step.

Hereinafter, an example of the first step will be described.
First, the cushion is bonded to each of the constituent members of the inner shell 30 (the inner main body 31 and the armrest constituent member 35).
Next, the inner main body 31 and the armrest component 35 are fastened with bolts. Specifically, the downward arc-shaped extension part 36a in the armrest component 35 is fixed to the arc-shaped side part 31a in the inner main body 31 with a plurality of bolts 36j (see FIGS. 7 and 11).

Next, the inner shell 30 and the component support member 5 are bolted.
In the embodiment, the horizontal extending portion 50 in the component support member 5 is fixed to the inner main body 31, and the vertical extending portion 52 in the component support member 5 is fixed to the armrest component member 35.
Specifically, the inner main body 31 and the horizontally extending portion 50 are fixed by inserting bolts 55j from below into the bolt insertion holes 33h and 55h of the component support member connecting portion 33 and the bracket 55, and upwardly protruding portions of the bolts 55j. This is performed by screwing the (male thread part) onto a nut (female thread part) (not shown) (see FIG. 14).
On the other hand, the armrest constituent member 35 and the vertically extending portion 52 are fixed by inserting a bolt (not shown) from the outside in the width direction into the bolt insertion hole 56h of the second bracket 56, so The male screw portion) is screwed onto the female screw portion 65m of the second part support member connecting portion 65 (see FIG. 12).

  Next, the outer main body 41 and the armrest cover member 45 are fastened with bolts. Specifically, the inward arc-shaped extending portion 47 in the armrest cover member 45 is fixed to the arc-shaped side portion 43 in the outer main body 41 with a plurality of bolts 47j (see FIG. 9).

Next, a catch made of resin such as plastic (not shown) is engaged with an appropriate position of the outer body 41.
Next, a skin material is bonded to the outer main body 41.
Next, a crank-shaped support fitting 67 is bolted to the outer body 41 (see FIG. 16).

  Next, the inner main body 31 and the outer main body 41 are engaged. Specifically, the inner main body 31 and the outer main body 41 are engaged with each other by inserting the support fitting 67 (inner receiving portion 67b) in the outer main body 41 from the rear lower side into the inner side opening 31h in the inner main body 31 ( (See FIGS. 7 and 16).

Next, the outer main body 41 is pressed against the inner main body 31 and a catch (not shown) is fitted into a recess (not shown) of the inner main body 31.
In addition, by replacing the catch with a bolt, the integrity of the inner shell 30 and the outer shell 40 may be further increased, and the whole may be a strength member. The outer shell 40 may function not only as a cover member for the inner shell 30 but also as a reinforcing member.

Next, the inner main body 31 and the outer main body 41 are fixed. Specifically, the inner main body 31 and the outer main body 41 are fixed by inserting the bolts 42j from below into the bolt insertion holes 32h and 42h of the inner main body 31 and the outer main body 41, and projecting the upper protrusions of the bolts 42 (male thread portions). ) Is screwed onto a nut (not shown) (see FIG. 14).
The assembly in the first step can be manufactured by the above procedure.

Hereinafter, an example of the second step will be described.
After the first step, the inner main body 31 and the support base 15 are fixed. Specifically, the inner body 31 and the support base 15 are fixed by inserting the bolts 18j (19j) from below into the bolt insertion holes 18h and 42f (19h and 42r) of the seat surface component connecting portion 17 and the outer body 41. Then, the upper projecting portion (male screw portion) of the bolt 18j (19j) is screwed into the female screw portion 32f (32r) of the inner body 31 (see FIG. 14).
The chair 1 of the embodiment can be manufactured by the above procedure.
As shown in FIG. 1, in the chair 1 in a completed state, the top plate 6 is disposed at a position offset radially outward from the center position of the chair 1, and is around the axis of the extended end portion 5 a of the component support member 5. Can be rotated. When sitting, the seating space can be opened forward by rotating the top plate 6 in the direction of the arrow R1 around the axis.

  As described above, the chair 1 according to the above-described embodiment has a seat surface configuration including the seat surface portion 20 on which a seated person can sit and the first surface portion 32 facing the floor surface 2 on which the chair 1 is installed. The load support structure 3 which has the member 4 and the 2nd surface part 16 which opposes the 1st surface part 32, and supports the 1st surface part 32 of the seat surface structural member 4, the 1st surface part 32, and the 2nd surface part A component support member 5 that extends to the side of the seat surface portion 20 via a passage 25 formed between the component 16 and the component support member 5 that can support an accessory component with the extended end portion 5a. Is provided with a supported portion 55 sandwiched between the first surface portion 32 and the second surface portion 16 and supported by the seat surface constituent member 4.

  According to this configuration, when the component support member 5 is sandwiched between the pair of surface portions (the first surface portion 32 and the second surface portion 16) having a certain spread, a load is applied to the extended end portion 5a of the component support member 5. Even if it is a case where it inputs, since the load resulting from an input load can be received by a pair of surface part, drop-off | omission of the component support member 5 can be prevented. In addition, since the supported portion 55 in the component support member 5 is supported by the seat surface component member 4, it is not necessary to extremely increase the robustness at the connection portion between the component support member 5 and the chair 1. Therefore, it is possible to prevent the component support member 5 from falling off without significantly increasing the robustness at the connection portion between the component support member 5 and the chair 1.

In the above-described embodiment, the supported portion 55 is sandwiched between the upper surface portion of the load supporting structure 3 as the second surface portion 16 and the lower surface portion of the seat surface constituent member 4 as the first surface portion 32 and extends. The end portion 5a supports the top plate 6 as an accessory component, thereby providing the following effects.
According to this configuration, when the component support member 5 is sandwiched between the upper surface portion of the load support structure 3 and the lower surface portion of the seat surface configuration member 4, a load from above is input to the top plate 6. However, since the load caused by the input load can be received by a pair of upper and lower surface portions (upper surface portion and lower surface portion), without significantly increasing the robustness at the connection portion between the component support member 5 and the chair 1, The component support member 5 can be prevented from falling off.

In the above embodiment, the component support member 5 includes the supported portion 55, and extends upward from the passage-side arrangement portion 50 on the side of the seat surface portion 20 and the passage-side arrangement portion 50 arranged in the passage 25. The seat surface constituting member 4 includes an intermediate path forming portion 34 that forms an intermediate path 34 s through which the side extending portion 51 passes at a position above the supported portion 55. By providing, the following effects are produced.
According to this configuration, even when a load is input to the extended end portion 5a of the component support member 5 by the side extending portion 51 of the component support member 5 passing through the intermediate path 34s, the input is performed. Since the load due to the load can be received by the intermediate path forming portion 34, it is possible to suppress an excessive load from being applied to the supported portion 55 of the component support member 5. Therefore, it is possible to more effectively prevent the component support member 5 from falling off without extremely increasing the robustness at the connection portion between the component support member 5 and the chair 1.

The manufacturing method of the chair 1 which concerns on the said embodiment is a manufacturing method of said chair 1, Comprising: The 1st process which connects the component support member 5 to the seat surface structural member 4, and produces an assembly, and a 1st process And a second step of connecting the assembly to the load support structure 3.
According to this method, since the assembly can be connected to the load support structure 3 after the component support member 5 is connected to the seat surface component 4 in advance and the assembly is manufactured, the assembly of the chair 1 is possible. Efficiency is improved.

  In the above embodiment, the floor surface 2 on which the chair 1 is installed is described as an indoor flat floor surface 2. However, the present invention is not limited to this. For example, the floor surface 2 may be an outdoor flat ground surface or an inclined surface, or may be a stand installation surface in a stadium such as a stadium.

  Moreover, although the said embodiment demonstrated and demonstrated the example by which the to-be-supported part 55 in the component support member 5 was supported by the seat surface structural member 4, it is not restricted to this. For example, the supported portion 55 in the component support member 5 may be supported by the load support structure 3. That is, the supported portion 55 in the component support member 5 may be supported by at least one of the seat surface constituting member 4 and the load support structure 3.

  Moreover, although the said embodiment demonstrated and demonstrated the example by which the top plate 6 as an accessory is supported by the extended edge part 5a, it is not restricted to this. For example, a display or a tablet cradle as an accessory may be supported on the extended end portion 5a, or a medical device such as an infusion device may be supported. Further, an attachment for supporting the accessory may be attached to the extended end portion 5a.

  Further, in the above-described embodiment, the seating surface constituent member 4 forms an intermediate path 34 s that passes through the laterally extending portion 51 (specifically, the inclined connecting portion 53) at a position above the supported portion 55. Although the example provided with the intermediate | middle path | route formation part 34 was given and demonstrated, it is not restricted to this. For example, as shown in FIG. 17, the intermediate path forming portion 34 has an intermediate support member that supports the laterally extending portion 51 (specifically, the inclined connecting portion 53) at a position above the supported portion 55. 68 may be provided.

The intermediate support member 68 includes an intermediate support main body 68a having a U-shaped cross section along the outer surface of the inclined connecting portion 53, and an extending piece 68b extending from both ends of the intermediate support main body along the outer surface of the intermediate path forming portion 34. (See FIG. 17). For example, the extending piece 68b is fixed to the outer surface of the intermediate path forming portion 34 by welding.
Further, a spacer (not shown) that fills a minute gap may be provided between the intermediate path forming portion 34 and the inclined connecting portion 53.

Moreover, although the said embodiment gave and demonstrated the example which the extension end part 5a extended above an armrest surface, it is not restricted to this. For example, as shown in FIG. 18, in the chair 1 </ b> A, the extended end portion 5 a may be provided inside the armrest portion 23. For example, the vertically extending portion 52 may be configured to be split vertically.
As shown in FIG. 19, in the chair 1B, the top plate 6 is supported by the extended end portion 5a on the right side (one side in the width direction), while the extended end portion on the left side (the other side in the width direction). 5 a may be provided inside the armrest 23.

  Moreover, although the said surface embodiment mentioned and demonstrated the example (example which is a 2 layer structure) with which the seat surface structural member 4 is provided with the inner shell 30 and the outer shell 40, it is not restricted to this. For example, the seat surface constituent member 4 may have a single layer structure including only the inner shell 30.

  Moreover, although the said embodiment gave and demonstrated the example whose supported part is the bracket 55, it is not restricted to this. For example, the supported portion may be the horizontal extension portion 50 main body. That is, the horizontal extending portion 50 in the component support member 5 may be directly supported by the seat surface constituent member 4.

  The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1,1A, 1B ... Chair, 2 ... Floor surface (chair installation surface), 3 ... Load support structure, 4 ... Seat surface structural member, 5 ... Parts support member, 5a ... Extension end part, 6 ... Top plate ( Attached parts), 16 ... second surface portion, 17 ... seat surface component connecting portion, 20 ... seat surface portion, 25 ... passage, 32 ... inner lower surface portion (first surface portion), 33 ... component support member connecting portion, 34 ... Intermediate path forming part, 34a ... Intermediate path, 50 ... Horizontal extension part (passage side arrangement part), 51 ... Side extension part, 55 ... Bracket (supported part)

Claims (4)

A seat surface component having a seat surface portion on which a seated person can be seated and a first surface portion facing the chair installation surface on which the chair is installed;
A load support structure that has a second surface portion facing the first surface portion and supports the first surface portion of the seat surface component;
A component support member that extends to the side of the seat surface portion via a passage formed between the first surface portion and the second surface portion, and that can support the accessory component at the extended end portion; Prepared,
The component support member includes a supported portion that is sandwiched between the first surface portion and the second surface portion and is supported by at least one of the seat surface constituent member and the load support structure. . The supported portion is sandwiched between an upper surface portion of the load support structure as the second surface portion and a lower surface portion of the seat surface constituent member as the first surface portion,
The chair according to claim 1, wherein a top plate as the accessory part is supported on the extended end portion. The component support member is
A passage-side arrangement portion that has the supported portion and is arranged in the passage;
A laterally extending portion that extends upward from the passage-side arrangement portion at a side of the seat surface portion,
The said seat surface structural member is provided with the intermediate | middle path | route formation part which forms the intermediate | middle path | route which lets the said side extension part pass in the position above the said to-be-supported part. Chairs. It is a manufacturing method of the chair as described in any one of Claim 1 to 3,
A first step of producing an assembly by connecting the component support member to the seating surface component;
After the first step, a second step of connecting the assembly to the load support structure includes a method for manufacturing a chair.

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