JP2020062345A - Chair - Google Patents

Abstract

To provide a chair for facilitating attachment of function parts to a support structure body.SOLUTION: A chair includes: a surface material 43 constituting a backrest surface 431 where a seated person leans his/her back against; armrests 7 (function parts having a predetermined function); and a backrest support part 24 (support structure body) for supporting the armrests 7. The armrests 7 and the backrest support part 24 are connected by second bolts 62 (connectors). Each one of the second bolts 62 is inserted to be diagonal to a direction along the backrest surface 431 with respect to the armrest 7 and the backrest support part 24 in a plane view and also to be closer to the surface material 43 from a side separated from the surface material, so as to connect the armrest 7 to the backrest support part 24.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a chair.

BACKGROUND ART There is known a chair in which functional parts such as a backrest and an armrest are attached to a supporting structure such as a leg part supporting the backrest and the armrest and a backrest support part.
For example, in the chair disclosed in Patent Document 1, a backrest support portion (backrest support frame) serving as a support structure and a backrest backrest (back frame) serving as a functional portion are in a state of being engaged with each other. The backrest support portion and the backrest are respectively connected by screws inserted from the inner side to the outer side in the width direction.

JP, 2006-102130, A

  In the chair disclosed in Patent Document 1, the direction in which the screw is inserted into the backrest support portion and the backrest is the direction along the backrest surface of the backrest. Therefore, when the screw is inserted, the screw and the tool are inserted. May interfere with the backrest surface and workability may be reduced.

  Then, this invention aims at providing the chair which can attach a function part to a support structure easily.

  In order to achieve the above object, the chair according to the present invention includes a face material that constitutes a backrest surface on which a seated person leans his / her back, a functional portion having a predetermined function, and a support structure that supports the functional portion. In the chair having, the functional portion and the support structure are connected by a connecting tool, and the connecting tool is in a direction oblique to a direction along the backrest surface, and the face material. It is characterized in that the functional portion and the support structure are connected from the direction away from the side toward the side approaching.

  In the present invention, when connecting the functional portion to the support structure, by bringing the connecting tool and the tool closer to the face material from the side away from the face material, the direction along the face material in the state of being close to the face material. Compared to the case where the connecting tool or the tool is moved, the connecting tool or the tool is less likely to interfere with the face material during assembly. Therefore, the functional portion can be easily attached to the support structure.

In the chair according to the present invention, the chair has a backrest that is supported by the support structure and has the face member, the backrest is provided separately from the functional portion, and is different from the connector. It may be supported by the support structure by different support means.
With such a configuration, the orientation of the functional portion can be adjusted regardless of the orientation of the backrest surface, so that the functional portion can be provided in the optimal orientation.

Further, in the chair according to the present invention, the backrest is provided on the front side of the support structure, and the face member is provided on a front side portion of the backrest, and the front surface constitutes a backrest surface. The connector may connect the functional unit and the support structure behind the backrest.
With such a configuration, it is possible to provide a structure in which the connector and the tool are less likely to interfere with the face material during assembly.

Further, in the chair according to the present invention, the functional part has a functional part main body having the function, and a functional part main body supporting part that supports the functional part main body and is connected to the supporting structure. May be.
With such a configuration, the direction in which the functional unit main body is connected to the functional unit main body supporting unit is not affected by the direction in which the functional unit main body supporting unit is connected to the support structure. It can be easily set to the optimum state.

Further, in the chair according to the present invention, the functional part may be an armrest on which a seated person rests his / her arm.
With such a configuration, even when the armrest is provided at a position close to the backrest, it is possible to provide a structure in which a connector or a tool for connecting the armrest to the support structure does not easily interfere with the face material.

  According to the present invention, the functional portion can be easily attached to the support structure.

It is a perspective view showing an example of a chair by an embodiment of the present invention. 1 is a front view of a chair according to an embodiment of the present invention. FIG. 3 is a rear view of the chair according to the embodiment of the present invention. It is a perspective view showing a connecting structure of a backrest support portion and an outer peripheral frame portion. It is a perspective view of a backrest support part. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is the perspective view seen from the diagonal front of the peripheral frame part. It is the perspective view seen from the diagonal back of the peripheral frame part. It is a perspective view of an armrest. It is an exploded perspective view of an armrest. It is a perspective view of an armrest main-body support part. It is the EE sectional view taken on the line of FIG. It is the FF sectional view taken on the line of FIG. It is the GG sectional view taken on the line of FIG. It is a perspective view of an armrest main body. It is the HH sectional view taken on the line of FIG. It is the II sectional view taken on the line of FIG. It is a perspective view of a rail member.

Hereinafter, a chair according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 to 3, the chair 1 according to the present embodiment has a support structure 2, a seat portion 3, and a backrest 4.
In the following description, the direction in which a seated person sitting on the chair 1 faces forward is the front side, the opposite side is the rear side, and the horizontal direction connecting the front side and the rear side is the front-back direction. Further, the horizontal direction orthogonal to the front-rear direction is the width direction. The chair 1 has a shape symmetrical in the width direction. Regarding the width direction, both widthwise ends of the entire chair 1 with respect to the center of the widthwise direction are referred to as “widthwise outsides”, and the widthwise center side with respect to the widthwise ends is referred to as “widthwise insides”. Sometimes (see FIGS. 2 and 3).

The support structure 2 includes a leg 21, a pedestal 22, a support base 23, and a backrest support portion 24 (support structure).
The leg 21 has a plurality of leg rods 211 arranged radially in a plan view. A caster 212 is provided at the tip of each leg rod 211 for grounding on the floor surface.
The pedestal 22 is erected at the center of the leg body 21. The pedestal 22 is a telescopic type having a built-in gas spring, and has an outer cylinder 221 fixed to the leg 21 and an inner cylinder 222 inserted into the outer cylinder 221 and extending above the outer cylinder 221. There is. The inner cylinder 222 is configured to be movable up and down with respect to the outer cylinder 221, and is configured to be rotatable relative to the outer cylinder 221.

The support base 23 is fixed to the upper end of the pedestal 22. The seat portion 3 is arranged above the support base 23, and the backrest support portion 24 is arranged behind the support base 23.
The support base 23 supports the backrest support portion 24 so as to be tiltable (rotatably), and also supports the seat portion 3 forming a seating surface so as to be tiltable in cooperation with the backrest support portion 24.

(Backrest support)
As shown in FIGS. 4 to 5, the backrest support portion 24 includes a lower frame 241 that is connected to the support base 23 (see FIGS. 1 to 3) and extends rearward of the support base 23, and the lower frame 241. And a rear frame 242 that extends upward from the rear end portion. The lower frame 241 and the rear frame 242 are integrally formed. The backrest support portion 24 has an L shape in a side view as seen from the width direction.

  The lower frame 241 connects the pair of rear extending portions 243, which extend in the front-rear direction and are arranged at intervals in the width direction, and the middle portion of the pair of rear extending portions 243 in the front-rear direction, to each other. And a connecting portion 244. The rear extending portion 243 on one side in the width direction of the pair of rear extending portions 243 has a front end portion connected to one side in the width direction of the support base 23, and the rear extending portion 243 on the other side in the width direction. Has a front end connected to the other side of the support base 23 in the width direction.

The rear frame 242 has a pair of upper extension portions 245 extending from the rear end portions of the pair of rear extension portions 243 toward the upper side in an upward direction and upper end portions of the pair of upper extension portions 245. And an upper coupling portion 246 that couples with each other.
The upper connecting portion 246 is curved so that the center in the width direction is recessed rearward over the entire width direction.

The pair of upward extending portions 245 are provided at intervals in the width direction. One upper extension portion 245 of the pair of upper extension portions 245 is located closer to one side in the width direction than the center of the chair 1 in the width direction, and the other upper extension portion 245 is the width of the chair 1. It is located on the other side in the width direction than the center in the direction. Therefore, in the pair of upward extending portions 245, the sides facing each other are the inner sides in the width direction, and the sides separated from each other are the outer sides in the width direction.
The pair of upward extending portions 245 are formed in a rod shape extending from the lower side to the upper side in the direction toward the front side gradually, and the connecting portion 5 to which the backrest 4 is fixed, and the rear edge portion 57 of the connecting portion 5 from the width direction. And a projecting plate portion 26 projecting to the outside.

  As shown in FIG. 5, the connecting portion 5 is appropriately formed with a groove-shaped, concave-shaped, or hole-shaped lightening portion. The outer peripheral surface of the connecting portion 5 has a connecting portion front surface 51 with a surface facing substantially forward, a connecting portion rear surface 52 with a surface facing substantially rearward, a connecting portion inner surface 53 with a surface facing generally inward in the width direction, and a substantially width direction. The outer surface of the connecting portion is formed of the connecting portion outer surface 54. The "face facing the .." and the "face facing the .. direction" refer to faces whose normals extend in the ".. side" or "in the .. direction".

The connecting portion rear surface 52 is formed on a surface that gradually extends from the lower side to the upper side toward the front side and gradually extends from the outer side to the inner side in the width direction toward the rear side. The rear surface 52 of the connecting portion is continuous with the rear surface of the upper connecting portion 246 without corners or steps.
The connecting portion front surface 51 is formed on a surface that gradually extends from the lower side to the upper side toward the front side and gradually extends from the outer side to the inner side in the width direction toward the rear side. The front surface 51 of the connecting portion is substantially parallel to the rear surface 52 of the connecting portion.

The inner side surface 53 of the connecting portion is formed such that the vicinity of the rear end portion is slightly facing the inner side in the width direction, and the front portion thereof is formed in the surface facing the inner side in the width direction.
The connecting portion outer surface 54 is formed on a surface that gradually extends inward in the width direction from the rear side to the front side. The connecting portion outer surface 54 is a surface that is substantially orthogonal to the connecting portion rear surface 52 and the connecting portion front surface 51.
The size of the connecting portion 5 gradually decreases from the rear side to the front side.

Two first hole portions 55, into which the first bolts 61 (see FIGS. 6 and 7) for fixing the backrest body 41 of the backrest 4 are inserted, are formed in the connecting portion 5 at intervals in the vertical direction. , Two second holes 56 into which the second bolts 62 (connectors, see FIG. 8 and FIG. 9) for fixing the armrest main body support portion 72 of the backrest 4 are inserted are formed at intervals in the vertical direction. There is.
The two second hole portions 56 are formed between the two first hole portions 55.

As shown in FIG. 6 and FIG. 7, in the connecting portion 5, front concave portions 551 that open to the front and two concave portions that are located on the rear side of the front concave portions 551 and open to the rear side are provided at two places vertically spaced apart from each other. And a rear concave portion 552 which is formed. The front concave portion 551 and the rear concave portion 552 are arranged side by side substantially in the front-rear direction with the intermediate plate portion 553 interposed therebetween. The intermediate plate portion 553 is formed in a plate shape whose plate surface faces the front-rear direction, and has a hole portion penetrating in the front-rear direction in the central portion in a front view. This hole is the first hole 55.
Returning to FIG. 5, the connecting portion 5 has a notch portion 554 formed in an upper portion of the front concave portion 551 located on the upper side, and the inside of the front concave portion 551 communicates with the upper portion of the connecting portion 5 via the notch portion 554. Is configured. The notch 554 is located above the widthwise outer portion of the front recess 551.

  As shown in FIG. 8 and FIG. 9, in the connecting portion 5, between the two first hole portions 55 (see FIG. 5), at two places spaced apart in the up and down direction, respectively, inward in the width direction. An inner concave portion 561 that opens is formed. In the present embodiment, the inner concave portion 561 is also open rearward. A bottom surface 562 of the inner recessed portion 561 is formed on a surface that gradually extends outward in the width direction from the front side toward the rear side. A bottom surface 562 of the inner concave portion 561 is arranged in parallel with the connecting portion outer surface 54.

The connecting portion 5 is formed with a hole penetrating from the bottom surface 562 of the inner concave portion 561 to the connecting portion outer surface 54. This hole is the second hole 56. The second hole portion 56 penetrates the connecting portion 5 in an oblique direction from the inner side to the outer side in the width direction and gradually toward the front side. The penetrating direction of the second hole portion 56 is a direction along the connecting portion front surface 51 and the connecting portion rear surface 52, and is a first oblique direction that gradually advances from the inner side to the outer side in the width direction toward the front side.
The first diagonal direction indicates a direction from the inner side to the outer side in the width direction gradually toward the front side, and a direction opposite to the opposite direction from the outer side to the inner side in the width direction gradually toward the rear side. The first diagonal direction is substantially horizontal.
The side that gradually progresses from the inner side to the outer side in the width direction in the first direction is referred to as the outer side, and the side that gradually progresses from the outer side in the width direction toward the inner side toward the rear side is the inner side.

  As shown in FIGS. 5, 8 and 9, the protruding plate portion 26 is formed in a plate shape protruding in the first oblique direction from the rear edge portion 57 of the connecting portion 5, and the surface thereof is curved to the upper connecting portion 246. It is a surface along. The rear surface 261 of the projecting plate portion 26 is smoothly continuous with the rear surface 52 of the connecting portion without any step or bent portion 462. The front surface 262 of the projecting plate portion 26 is located rearward of the second hole portion 56. Thereby, the projecting plate portion 26 is configured not to interfere with the second hole portion 56. The projecting plate portion 26 has a shorter dimension that projects outward from the connecting portion 5 in the width direction from the upper side to the lower side, and the dimension of the plate surface in the width direction gradually decreases from the upper side to the lower side. It has a triangular shape.

(Back)
As shown in FIGS. 1 to 4, the backrest 4 is arranged on the front side of the rear frame 242 of the backrest support portion 24.
The backrest 4 has a backrest main body 41 on which the seated person leans his / her back, and an armrest 7 (functional part) provided outside the backrest main body 41 in the width direction and on which the seated person rests his / her elbow. There is.
The backrest main body 41 has a rectangular frame-shaped outer peripheral frame portion 42 having an opening 421 formed therein, and a face material 43 that covers the opening 421 and is locked to the outer peripheral frame portion 42 (see FIGS. 1 to 3). And have. In FIG. 4, the face material 43 is omitted.
The face material 43 is formed of a film-shaped member such as a mesh or a cloth, is formed to be larger than the front view shape of the outer peripheral frame portion 42 as viewed from the front side, and has an outer edge portion locked to the outer peripheral frame portion 42. .

As shown in FIGS. 4, 10, and 11, the outer peripheral frame portion 42 has an upper frame portion 44, a lower frame portion 45, and a pair of vertical frame portions 46.
The pair of vertical frame portions 46 are provided at intervals in the width direction. One vertical frame portion 46 of the pair of vertical frame portions 46 is located on one side in the width direction with respect to the widthwise center of the chair 1, and the other vertical frame portion 46 is the widthwise center of the chair 1. It is located on the other side in the width direction. Therefore, in the pair of vertical frame portions 46, the sides facing each other are the inside in the width direction, and the sides separated from each other are the outside in the width direction.

The upper frame portion 44 is a member that extends in the width direction, and extends over the entire width direction such that the center in the width direction projects upward in a front view and the center in the width direction projects rearward in a plan view seen from above. It is curved. The upper frame portion 44 is formed with an upper frame surface material locking groove portion 441 that locks an upper edge portion of the surface material 43 (see FIGS. 1 to 3). The upper frame surface material locking groove portion 441 is a groove portion that opens upward and is formed over the entire width direction of the upper frame portion 44.
The lower frame portion 45 is a member extending in the width direction, and is curved over the entire width direction such that the center in the width direction projects downward in a front view and the center in the width direction projects rearward in a plan view. There is. In the lower frame portion 45, a lower frame surface material locking groove portion 451 that locks the lower edge portion of the surface material 43 is formed. The lower frame surface material locking groove portion 451 is a groove portion that opens downward and is formed over the entire width direction of the lower frame portion 45.

The pair of vertical frame portions 46 has a bent portion 462 formed at an intermediate portion in the vertical direction.
The pair of vertical frame portions 46, in a side view seen from the width direction, a portion below the bending portion 462 extends in a direction from the lower side to the upper side gradually toward the front side, and a portion above the bending portion 462. Extends from the lower side to the upper side in a direction gradually toward the rear side. Further, in the pair of vertical frame portions 46, the lower side of the bent portion 462 extends in a direction from the lower side to the upper side gradually toward the outer side in the width direction in a front view, and the upper side of the bent portion 462 extends from the lower side to the upper side. Toward the inner side in the width direction. The bent portion 462 is located below the vertical center of each of the pair of vertical frame portions 46.

  The pair of vertical frame portions 46 are respectively formed with a face material locking portion 463 that locks the face material 43 and the face material locking portion 463, and is fixed to the backrest support portion 24. It has a portion 464 and a rib 465 protruding rearward from the surface material locking portion 463.

  The face material locking portion 463 is provided over the entire vertical direction of the vertical frame portion 46, and the upper end portion is connected to the upper frame portion 44 and the lower end portion is connected to the lower frame portion 45. The face material locking portion 463 of one vertical frame portion 46 of the pair of vertical frame portions 46 has an upper end portion connected to one end portion in the width direction of the upper frame portion 44, and a lower end portion being a lower frame portion. It is connected to one end portion of the width direction 45. The face material locking portion 463 of the other vertical frame portion 46 of the pair of vertical frame portions 46 has an upper end portion connected to the other end portion in the width direction of the upper frame portion 44 and a lower end portion that is a lower frame portion. It is connected to the other end of the width direction 45.

A vertical frame surface material locking groove portion 461 for locking the side edge portion of the surface material 43 is formed in the surface material locking portion 463. The vertical frame surface member locking groove portion 461 is a groove portion that opens inward in the width direction and is formed over the entire vertical direction.
The pair of vertical frame surface material locking groove portions 461 are respectively continuous with the upper frame surface material locking groove portion 441 and the lower frame surface material locking groove portion 451. As a result, the outer peripheral frame portion 42 is formed with a groove portion for locking the face material 43 over the entire outer peripheral portion.

As shown in FIGS. 10 and 11, the backrest connecting portion 464 is provided in the entire portion of the vertical frame portion 46 below the bending portion 462. The backrest connecting portion 464 is provided inside the face material locking portion 463 in the width direction. The lower end of the backrest connecting portion 464 is connected to the lower frame portion 45.
The backrest connecting portion 464 includes a connecting plate portion 47 that gradually extends rearward inward in the width direction from a rear edge portion of a portion below the bending portion 462 of the face material locking portion 463, and a connecting plate portion 47. And a connecting protrusion 48 that protrudes to the rear side.

  The connecting plate portion 47 is formed in an elongated shape extending in the vertical direction, and the lower end portion is connected to the lower frame portion 45. In the connecting plate part 47, the connecting plate part front surface 471 that faces the front is a surface that faces slightly inward in the width direction rather than the front side in the front-rear direction, and the connecting plate part rear surface 472 that faces rearward is slightly in the width direction than the rear side in the front-rear direction. It is a surface that faces the outside of. The connecting plate part 47 is formed in a shape along the lower frame part 45 in a plan view.

Two connecting protrusions 48 are provided in the vertical direction with respect to one connecting plate 47. As shown in FIG. 11, the connecting protrusion 48 has a tubular portion 481 protruding rearward from the connecting plate portion 47, and a tip plate connected to cover the tip portion (rear end portion) of the tubular portion 481. And a portion 482. The tip plate portion 482 is formed in a flat plate shape with its plate surface facing the front-rear direction, and has a third hole portion 483 penetrating in the front-rear direction in the center of the plate surface.
As shown in FIGS. 6 and 7, the connecting protrusion 48 is formed in a shape that fits into the front recess 551 of the connecting portion 5 of the backrest support 24 from the front side. The connecting protrusion 48 is set such that the third hole 483 overlaps with the first hole 55 of the front recess 551 in the front-rear direction when fitted into the front recess 551 of the connecting portion 5 of the backrest support 24. .

  As shown in FIG. 11, the rib 465 is provided at an intermediate portion in the vertical direction of the vertical frame portion 46 and in a portion including the bent portion 462 and regions above and below the bent portion 462. The rib 465 is formed in a plate shape whose plate surface faces the width direction. The lower end of the rib 465 is connected to the side surface of the tubular portion 481 of the connecting protrusion 48 arranged on the upper side. On the lower side of the rib 465, a cutout portion 466 that opens rearward and downward is formed.

As shown in FIGS. 1 and 2, the surface material 43 is stretched on the front side of the vertical frame portion 46 so as to cover the inner side of the outer peripheral frame portion 42, and the upper frame portion 44, the lower frame portion 45 and the pair of vertical frame portions are provided. The front surface of 46 is rolled up, and the outer edge portion is inserted into the surface material locking groove portions 441, 451 and 461 and locked to the outer peripheral frame portion 42. The face member 43 is formed, and the face on which the seated person leans his back is referred to as a backrest face 431. The backrest surface 431 is curved so that the center in the width direction is recessed more rearward than the outer end portion in the width direction.
The face material 43 stretched over the outer peripheral frame portion 42 is configured to be elastically deformable by the load applied from the front. The outer peripheral frame portion 42 is also configured to be elastically deformable by the load acting on the face material 43.

The outer peripheral frame portion 42 is fixed to the backrest support portion 24 in a state where the face material 43 is stretched. The outer peripheral frame portion 42 is fixed to the front side of the rear frame 242 of the backrest support portion 24.
As shown in FIG. 4, the backrest connecting portion 464 of the pair of vertical frame portions 46 is arranged on the front side of the connecting portion 5 of the upper extension portion 245 in the rear frame 242. In the connecting plate portion 47 of the backrest connecting portion 464, the connecting plate portion rear surface 472 is in contact with the connecting portion front surface 51 of the connecting portion 5. The connecting protrusion 48 of the backrest connecting portion 464 is inserted into the front recess 551 of the connecting portion 5.

A third hole portion 483 formed in the tip plate portion 482 of the connecting protrusion 48 of the backrest connecting portion 464 overlapping in the front-rear direction and the first hole portion 55 of the front recess 551 of the connecting portion 5 of the backrest supporting portion 24. The outer peripheral frame portion 42 is connected to the backrest support portion 24 by fastening the first bolt 61 inserted through the nut to the nut.
The ribs 465 of the pair of vertical frame portions 46 have lower end portions which are continuous with the upper connecting protrusions 48 and which are inserted into notch portions 554 formed on the upper side of the front concave portion 551 of the connecting portion 5, and which are lower than the lower end portions. The upper portion is arranged above the connecting portion 5.

To fix the backrest main body 41 to the backrest support portion 24, first, the face material 43 is attached to the outer peripheral frame portion 42.
The backrest connecting portion 464 of the pair of vertical frame portions 46 of the outer peripheral frame portion 42 is arranged on the front side of the connecting portion 5 of the upper extending portion 245 in the rear frame 242. Then, the connecting plate portion rear surface 472 of the connecting plate portion 47 of the backrest connecting portion 464 is brought into contact with the connecting portion front surface 51 of the connecting portion 5. Further, the connecting protrusion 48 of the backrest connecting portion 464 is inserted into the front recess 551 of the connecting portion 5.
By doing so, the third hole portion 483 formed in the tip plate portion 482 of the connecting protrusion 48 of the backrest connecting portion 464 and the first hole of the front concave portion 551 of the connecting portion 5 of the backrest supporting portion 24. The portion 55 overlaps with the front-rear direction, and the first bolt 61 is inserted into the first hole portion 55 and the third hole portion 483 and fastened with the nut 63. As a result, the backrest body 41 is connected to the backrest support portion 24. The nut 63 may be fixed inside the connecting protrusion 48.
In this way, between the backrest support 24 and the backrest main body 41 that are connected to each other, the protruding plate portion 26 of the backrest support 24, the connecting portion outer surface 54 of the connection portion 5, and the backrest main body are provided. A concave portion 27 is formed which is surrounded by the face material locking portion 463 of the vertical frame portion 46 of 41 and extends substantially in the vertical direction and which is open to the outside in the first diagonal direction. The armrest main body support portion 72 of the armrest 7 is inserted into the recess 27.

(Armrest)
As shown in FIGS. 12 and 13, the armrest 7 includes an armrest main body 71 (a functional portion main body) on which a seated person rests his / her arm, and an armrest main body support that is fixed to the backrest support part 24 and supports the armrest main body 71 so as to be able to move up and down. It has a portion 72 (functional portion main body supporting portion) and a cover member 73 which covers the armrest main body supporting portion 72.

As shown in FIGS. 13 and 14, the armrest main body support portion 72 is a long block-shaped member that extends in the substantially vertical direction, and a long block-shaped member that extends in the substantially vertical direction. And a rear member 75 connected to the rear side of the front member 74. The front member 74 and the rear member 75 are each formed of a metal such as an aluminum alloy, and are connected by a connecting tool (not shown) such as a bolt.
The armrest main body support portion 72, to which the front member 74 and the rear member 75 are connected, has a shape extending in the first diagonal direction when viewed in the vertical direction.

The front member 74 has a front connecting portion 741 located on the inner side in the first diagonal direction, and a front projecting piece 742 projecting outward from the front portion of the front connecting portion 741 in the first diagonal direction. .
The front surface (referred to as the front surface 741a) of the front connecting portion 741 and the front surface (referred to as the front surface 742a) of the front protruding piece 742 are respectively formed on surfaces that are slightly inward in the width direction rather than the front side in the front-rear direction. Has been done. The front surface 741a of the front connecting portion 741 and the front surface 742a of the front protruding piece 742 are arranged flush with each other.

A first stepped portion 741c is formed at an intermediate portion in the first diagonal direction on a surface (referred to as a rear surface 741b) of the front connecting portion 741 facing rearward, and is located outside the first stepped portion 741c in the first diagonal direction. The outer portion 741d is located on the front side of the inner portion 741e that is on the inner side in the first oblique direction with respect to the first step portion 741c. The outer portion 741d and the inner portion 741e on the rear surface 741b of the front connecting portion 741 are both formed to face slightly outward in the width direction than the rear side in the front-rear direction.
A rear-facing surface (referred to as a rear surface 742b) of the front-side protruding piece 742 is formed on a surface that is slightly outward in the width direction rather than the rear side in the front-rear direction. The rear surface 742b of the front protruding piece 742 is located on the front side of the outer portion 741d on the rear surface of the front coupling portion 741. A second step portion 742c is formed between the rear surface 742b of the front protruding piece 742 and the rear surface 741b of the front connecting portion 741.

As shown in FIG. 13, the inner side surface of the front connecting portion 741 in the first diagonal direction (referred to as the first side surface 741f) is formed on the surface facing the inner side in the first diagonal direction.
As shown in FIG. 15 to FIG. 17, the front connecting portion 741 is provided with a concave fourth hole portion 743 that is open inward in the first diagonal direction at an inner portion in the first diagonal direction. Threads are formed on the peripheral surface of the fourth hole 743. The fourth hole portions 743 are provided in two places at intervals in the vertical direction.

As shown in FIG. 14, the rear member 75 is formed in a flat plate shape.
The surface of the rear member 75 that faces the front side (referred to as the front surface 75a) is formed on the surface that faces slightly inward in the width direction than the front side in the front-rear direction. The surface of the rear member 75 facing the rear side (referred to as the rear surface 75b) is formed on the surface facing slightly outward in the width direction rather than the rear side in the front-rear direction.
The rear member 75 has an inner end 75c in the first diagonal direction located on the first step 741c of the front member 74, and projects rearward in the first diagonal direction more than the front connecting portion 741 of the front member 74. Is located in.

The rear member 75 is disposed on the rear side of the front coupling portion 741 and is coupled to the front coupling portion 741, and the rear coupling portion 751 and the rear coupling portion 751. The rear side protruding piece 752 that protrudes outward in the first diagonal direction from the portion 741 is included.
The front protruding piece 742 and the rear protruding piece 752 are arranged in parallel in the front-rear direction with a space therebetween. The armrest main body support portion 72 is formed with an elevating groove portion 744 that is sandwiched between the front side protruding piece 742 and the rear side protruding piece 752 outside the front side connecting portion 741 in the first oblique direction.

  The front-side connecting portion 741 of the front-side member 74 and the rear-side connecting portion 751 of the rear-side member 75, which are connected, are combined to form a first base portion 721. The front surface 721a of the first base portion 721 indicates the front surface 741a of the front connecting portion 741, and the rear surface 721b of the first base portion 721 is the rear surface 751b of the inner portion 741e and the rear connecting portion 751 of the rear surface 741b of the front connecting portion 741. The upper surface 721c of the first base portion 721 shows the upper surfaces of the front connecting portion 741 and the rear connecting portion 751, and the lower surface 721d of the first base portion 721 shows the lower surfaces of the front connecting portion 741 and the rear connecting portion 751. . In addition, the first side surface 721e on the inner side in the first diagonal direction of the first base portion 721 indicates the first side surface 741f of the front connecting portion 741.

As shown in FIG. 15, on the rear surface 742b of the front projecting piece 742, two front projecting piece groove portions 745 extending in the up-down direction are formed at two positions spaced apart in the up-down direction. The cross section of the front protruding piece groove portion 745 is formed in a semi-circular shape. The front protruding piece groove portion 745 is configured so as not to reach the upper end portion and the lower end portion of the front protruding piece 742, and not communicate with the upper and lower portions of the respective front protruding pieces 742. The downward end surface located at the upper end of each of the two front protruding piece groove portions 745 is referred to as a front protruding piece groove portion upper end surface 745a, and the upward end surface located at the lower end portion of the front protruding piece groove portion 745 is defined as a front end protruding piece groove portion lower end surface 745b. And
A first sliding member 761 is attached to the outer end surface and the rear surface of the front protruding piece 742 in the first diagonal direction. The first sliding member 761 is attached to a position that does not interfere with the front protruding piece groove portion 745.

As shown in FIG. 16, on the front surface 752a of the rear projecting piece 752, two rear projecting piece groove portions 755 extending in the up-down direction are formed at two positions spaced apart in the up-down direction. The cross section of the rear protruding piece groove portion 755 is formed in a semi-circular shape. The rear protruding piece groove portion 755 is arranged at a position facing the front protruding piece groove portion 745. The rear protruding piece groove portion 755 does not reach the upper end portion and the lower end portion of the rear protruding piece 752, and is configured not to communicate with the upper side and the lower side of the rear protruding piece 752, respectively. The downward end surface located at the upper end of each of the two rear protruding piece groove portions 755 is defined as the rear protruding piece groove upper end surface 755a, and the upward end surface located at the lower end portion of the rear protruding piece groove portion 755 is defined as the rear protruding piece groove portion. The lower end surface 755b.
The second sliding member 762 is attached to the outer end surface and the front surface of the rear protruding piece 752 in the first diagonal direction. The second sliding member 762 is attached to a position that does not interfere with the rear protruding piece groove portion 755.

As shown in FIG. 18, the armrest main body 71 is provided on the upper side and extends in the front-rear direction, and the armrest main body 71 is provided on the rear side and gradually extends from the rear end portion of the upper rod 711 to the lower side. And a rear rod 712 extending in an oblique direction.
An elbow rest 713 is provided on the upper portion of the front side portion of the upper rod 711.
The rear rod 712 is configured such that the armrest main body support portion 72 (see FIG. 13) is attached to the inner side in the width direction. The rear rod 712 is formed longer than the armrest main body supporting portion 72 in the up-down direction.
The armrest main body 71 has an armrest main body cover portion 714 serving as an outer shell, and a portion that covers the upper rod 711 and a portion that covers the rear rod 712 are integrally formed.

  As shown in FIGS. 18 and 19, in the armrest main body cover portion 714, two armrest main body cover groove portions 714a and 714b extending in the up-down direction are formed in the widthwise inner side of the portion that covers the rear rod 712 and are spaced in the front-rear direction. Is formed. The two armrest main body cover groove portions 714a and 714b are each formed longer than the vertical dimension of the armrest main body support portion 72. Of the two armrest main body cover groove portions 714a and 714b, the front groove is the front armrest main body cover groove portion 714a, and the rear groove is the rear armrest main body cover groove portion 714b.

As shown in FIG. 20, the front protruding piece 742 of the armrest body support portion 72 is inserted into the inside of the armrest body cover portion 714 of the rear rod 712 while penetrating the front armrest body cover groove portion 714a. The rear protruding piece 752 of 72 is configured to be inserted while penetrating the rear armrest main body cover groove portion 714b.
In the present embodiment, the portion of the armrest main body cover portion 714 where the two armrest main body cover groove portions 714a and 714b are formed is formed as a member that is attachable to and detachable from other portions.

As shown in FIGS. 19 and 20, inside the armrest main body cover portion 714 of the rear rod 712, there is provided a rail member 77 that engages with the armrest main body support portion 72 so as to be relatively movable in the vertical direction. The rail member 77 is formed such that the vertical dimension thereof is slightly smaller than the vertical dimension of the rear rod 712, and is longer than the vertical dimension of the armrest main body support portion 72.
As shown in FIGS. 19 to 21, the rail member 77 includes a rod-shaped second base portion 771 that extends in the vertical direction, and a ridge portion 772 that protrudes inward in the first diagonal direction from the entire vertical direction of the second base portion 771. ,have. The ridge portion 772 projects inward in the first diagonal direction from the middle portion in the front-rear direction of the second base portion 771.
A front surface of the ridge portion 772 (referred to as a front surface 772a) is formed on a surface slightly inward in the width direction rather than the front side in the front-rear direction. The surface of the ridge 772 that faces the rear side (referred to as the rear surface 772b) is formed on the surface that is slightly outward in the width direction rather than the rear side in the front-rear direction. The front surface 772a and the rear surface 772b of the ridge portion 772 are parallel to each other.

The front surface 772a of the ridge portion 772 is formed with a ridge portion front groove portion 772c extending over the entire vertical direction. The cross section of the ridge front groove portion 772c is formed in an arc shape.
The rear surface 772b of the ridge portion 772 is formed with a ridge portion rear side groove portion 772d extending over the entire vertical direction. The cross section of the convex groove rear side groove portion 772d is formed in an arc shape.

  The rail member 77 is arranged inside the armrest main body cover portion 714 at a position overlapping the two armrest main body cover groove portions 714a and 714b. As shown in FIG. 20, the ridge portion 772 of the rail member 77 is provided on the front side of the armrest body support portion 72 that is inserted into the armrest body cover portion 714 of the rear rod 712 through the armrest body cover groove portions 714a and 714b. It is inserted in the elevating groove 744 between the protruding piece 742 and the rear protruding piece 752. The second base portion 771 of the rail member 77 is in contact with the front end surfaces of the front side protruding piece 742 and the rear side protruding piece 752 via the sliding members 761 and 762.

The front surface 772a of the protruding portion 772 faces the rear surface 742b of the front protruding piece 742 with a space therebetween. The ridge front groove portion 772c of the front surface 772a of the ridge portion 772 faces each of the two front protruding piece groove portions 745 of the rear surface 742b of the front protruding piece 742.
A column-shaped front-side retaining member 763 that extends in the up-down direction is provided between the ridge portion front-side groove portion 772c and each of the two front-side protruding piece groove portions 745. The surface of the front-side retaining member 763 is formed as a sliding surface.

The front retaining member 763 is formed to have a length dimension slightly shorter than the dimension of the front protruding piece groove portion 745 in the length direction, and the front half is inserted into each of the two front protruding piece groove portions 745. The front side retaining member 763 inserted into the front protruding piece groove portion 745 has a vertical displacement relative to the front protruding piece 742 due to the front protruding piece groove portion upper end surface 745a and the front protruding piece groove portion lower end surface 745b of the front protruding piece groove portion 745. It is regulated.
The rear half of the front-side retaining member 763 is inserted into the ridge front groove portion 772c of the ridge portion 772. The front-side retaining member 763 inserted into the ridge front groove 772c is vertically displaceable relative to the ridge 772 along the ridge front groove 772c.

The rear surface 772b of the ridge 772 faces the front surface 752a of the rear protruding piece 752 with a space. The ridge rear side groove portion 772d of the rear surface 772b of the ridge portion 772 faces each of the two rear protruding piece groove portions 755 of the front surface 752a of the rear protruding piece 752.
A column-shaped rear-side retaining member 764 extending in the up-down direction is provided between the ridge rear-side groove portion 772d and each of the two rear-side protruding piece groove portions 755. The surface of the rear side retaining member 764 is formed as a sliding surface.
A column-shaped rear side retaining member 764 extending in the up-down direction is provided between the ridge front groove portion 772c and each of the two rear protruding piece groove portions 755. The surface of the rear side retaining member 764 is formed as a sliding surface.

The rear side retaining member 764 is formed to have a length dimension slightly shorter than the lengthwise dimension of the rear protruding piece groove portion 755, and the front half is inserted into each of the two rear protruding piece groove portions 755. The rear retaining member 764 inserted into the rear protruding piece groove portion 755 has the rear protruding piece groove 755 formed by the rear protruding piece groove portion 755 and the rear protruding piece groove upper end surface 755a and the rear protruding piece groove lower end surface 755b. The vertical displacement with respect to is restricted.
The rear half of the rear-side retaining member 764 is inserted into the ridge rear groove 772d of the ridge 772. The rear retaining member 764 inserted in the rear ridge groove 772d is configured to be vertically displaceable along the ridge 772 and the rear rear groove 772d.

Such an armrest main body 71 is configured to be able to move up and down with respect to the armrest main body support portion 72 in a state where the ridge portion 772 of the rail member 77 is inserted into the elevating groove portion 744 of the armrest main body support portion 72. ing. A front retaining member is provided between the ridge portion 772 of the rail member 77 and the front protruding piece 742 of the armrest main body supporting portion 72, and the ridge portion 772 of the rail member 77 and the rear protruding piece of the armrest main body supporting portion 72 are provided. Since the rear-side retaining member is provided between the armrest body 752 and the armrest 752, the armrest main body support portion 72 is prevented from separating from the rail member 77 and coming out of the armrest body 71.
Although not shown, a height adjusting portion having a known structure for restraining the armrest main body 71 to a desired height is provided.

  As shown in FIGS. 12 and 13, the cover member 73 covers the first base portion 721 of the armrest main body support portion 72. The cover member 73 is formed in a tubular shape, and is arranged so as to open in the first diagonal direction. The cover member 73 includes a front plate portion 731 that covers the front surface 721a of the first base portion 721, a rear plate portion 732 that covers the rear surface 721b of the first base portion 721, an upper plate portion 733 that covers the upper surface 721c of the first base portion 721, and And a lower plate portion 734 that covers the lower surface 721d of the first base portion 721.

The front plate portion 731 has an upper end portion located above the upper surface 721c of the first base portion 721 and a lower end portion located below the lower surface 721d of the first base portion 721. The inner end portion of the front plate portion 731 in the first diagonal direction is arranged at a position overlapping the first side surface 721e of the first base portion 721. The outer edge portion of the front plate portion 731 in the first diagonal direction is arranged at a position overlapping the outer edge portion of the first base portion 721 in the first diagonal direction.
On the front surface 731a of the front plate portion 731, a front plate step portion 731b extending vertically is formed at an intermediate portion in the first diagonal direction. In the front plate portion 731, an outer portion 731c on the outer side of the front plate step portion 731b in the first diagonal direction is located on the front side of an inner portion 731d on the inner side of the front plate step portion 731b in the first diagonal direction.

  The rear plate portion 732 has an upper end portion located above the upper surface 721c of the first base portion 721 and a lower end portion located below the lower surface 721d of the first base portion 721. The inner end portion of the front plate portion 731 in the first diagonal direction is arranged at a position overlapping the first side surface 721e of the first base portion 721. The outer edge portion of the front plate portion 731 in the first diagonal direction is arranged at a position overlapping the outer edge portion of the first base portion 721 in the first diagonal direction.

A front edge portion of the upper plate portion 733 is connected to an upper edge portion of the front plate portion 731, and a rear edge portion thereof is connected to an upper edge portion of the rear plate portion 732. The outer edge of the upper plate portion 733 in the first diagonal direction is arranged at a position overlapping the vicinity of the outer edge of the first base portion 721 in the first diagonal direction. The upper plate portion 733 projects more inward in the width direction than the front plate portion 731 and the rear plate portion 732. A portion of the upper plate portion 733 that projects inward in the width direction with respect to the front plate portion 731 and the rear plate portion 732 is referred to as a protruding plate portion 733b. The projecting plate portion 733b projects further inward in the width direction than the first base portion 721.
A plurality of upper ribs 735 projecting downward from the lower surface of the upper plate portion 733 are formed below the upper plate portion 733. The upper rib 735 is configured such that the lower end portion thereof contacts the upper surface 721c of the first base portion 721.

The lower plate portion 734 has a front edge portion connected to the lower edge portion of the front plate portion 731 and a rear edge portion connected to the lower edge portion of the rear plate portion 732. The outer edge in the width direction of the lower plate portion 734 is arranged at a position overlapping the vicinity of the outer edge in the width direction of the first base portion 721. The inner edge in the width direction of the lower plate portion 734 is arranged at a position overlapping the lower side of the first side surface 721e of the first base portion 721.
A plurality of lower ribs 736 protruding upward from the upper surface of the lower plate portion 734 and an inner plate portion 737 provided on the upper side of the lower rib 736 are provided on the upper side of the lower plate portion 734. The plate surface of the inner plate portion 737 is oriented substantially vertically, the front edge portion is connected to the front plate portion 731, and the rear edge portion is connected to the rear plate portion 732. The upper surface of the inner plate portion 737 is configured to contact the lower surface 721d of the first base portion 721.

In the armrest 7, the armrest main body support portion 72 and the armrest main body 71 are connected to each other, and the armrest main body support portion 72 is attached to the first base portion 721 of the armrest main body support portion 72. It is fixed to. Hereinafter, it is assumed that the armrest main body support portion 72 and the armrest main body 71 are connected and the cover member 73 is attached to the first base portion 721 of the armrest main body support portion 72.
The armrest 7 has an armrest body support portion 72 and a cover in a recess 27 between the backrest support portion 24 and the backrest body 41, which are connected to each other after the backrest body 41 is fixed to the backrest support portion 24. The member 73 is inserted and fixed to the backrest support portion 24. As described above, the recess 27 is surrounded by the protruding plate portion 26 of the backrest support portion 24, the connecting portion outer surface 54 of the connecting portion 5, and the face material locking portion 463 of the vertical frame portion 46 of the backrest body 41. Open in the first diagonal direction.

As shown in FIGS. 8 and 9, in order to fix the armrest 7 to the backrest support portion 24, first, the inner portion of the armrest body support portion 72 in the first diagonal direction is inserted into the recess 27.
At this time, the armrest 7 is inserted into the recess 27 so that the upper and lower second fourth hole portions 743 of the armrest main body support portion 72 respectively overlap the upper and lower second hole portions 56 of the connecting portion 5 in the first oblique direction.
Then, the first side surface 721e of the first base portion 721 is brought into contact with the connecting portion outer surface 54 of the connecting portion 5 of the backrest support portion 24, and the front plate portion 731, the rear plate portion 732, and the lower plate portion of the cover member 73 are formed. Each of the edges 734 (see FIG. 13) on the inner side in the first diagonal direction is brought into contact with the outer surface 54 of the connecting portion. The protruding plate portion 733b of the upper plate portion 733 of the cover member 73 is arranged above the connecting portion 5, and the lower surface of the protruding plate portion 733b and the upper surface of the connecting portion 5 are brought into contact with each other. The inner portion 731d of the front surface 731a of the front plate portion 731 of the cover member 73 is brought into contact with the rear surface of the face material locking portion 463 of the vertical frame portion 46 of the backrest main body 41.

The connecting portion 5 and the armrest main body supporting portion 72 are located on the rear side of the face member 43, and the second hole portion 56 of the connecting portion 5 and the fourth hole portion 743 of the armrest main body supporting portion 72 are arranged from the outer side in the width direction. Also opens diagonally toward the front. The opening direction of the second hole portion 56 and the fourth hole portion 743 is along the backrest body 41. The opening direction of the second hole portion 56 and the fourth hole portion 743 is a direction that approaches the backrest surface 431 from the inner side to the outer side in the width direction.
The second bolt 62 is inserted into the second hole portion 56 and the fourth hole portion 743 from the inner side to the outer side in the width direction. Therefore, the second bolt 62 is inserted into the second hole portion 56 and the fourth hole portion 743 from the side separated from the backrest surface 431 toward the side close to the backrest surface 431. It is configured.
The armrest main body support portion 72 is fixed to the backrest support portion 24 by inserting the second bolt 62 into the second hole portion 56 and the fourth hole portion 743 from the inner side in the width direction and fastening the second bolt 62 to the nut.
At this time, the front surface 51 of the connecting portion and the inner portion 731d of the front surface 731a of the front plate portion 731 of the cover member 73 are arranged substantially flush with each other.

  The armrest main body support portion 72 and the cover member 73 are sandwiched between the protruding plate portion 26 of the backrest support portion 24 and the face material locking portion 463 of the vertical frame portion 46 from the front and back, and the armrest main body support portion 72. Also, the connecting portion between the cover member 73 and the connecting portion 5 is covered. The widthwise outer end of the face material locking portion 463 of the vertical frame portion 46 is arranged along the front plate step portion 731b of the front plate portion 731 of the cover member 73, and is arranged in the width direction of the front plate step portion 731b. It is in contact with the inside. Therefore, the cover member 73 and the vertical frame portion 46 are prevented from shifting in the width direction.

As shown in FIG. 2, the armrest main body support portion 72 and the cover member 73 project outward in the width direction from the backrest main body 41, and the armrest main body 71 supported by the armrest main body support portion is separated from the backrest main body 41. However, it is located outside the outer peripheral frame portion 42 in the width direction. The upper rod 711 of the armrest main body 71 extends in the front-rear direction. Since the armrest portion 713 of the upper rod 711 of the armrest main body 71 is arranged on the front side of the backrest body 41, it is separated from the backrest body 41.
The armrest 7 may be fixed to the backrest support portion 24 and then the backrest body 41 may be fixed to the backrest support portion 24.

Next, the operation and effect of the chair according to the present embodiment described above will be described with reference to the drawings.
In the backrest 4 and the chair 1 according to the present embodiment described above, when connecting the armrest 7 to the backrest support portion 24, by bringing the connecting tool and the tool closer to the face material 43 from the side away from the face material 43, Compared to the case where the connecting tool or tool is moved in the direction along the surface material 43 in the state of being close to the surface material 43, the connecting tool or tool can be configured to be less likely to interfere with the surface material 43 during assembly. . Therefore, the armrest 7 can be easily attached to the backrest support portion 24.

  Further, the backrest 4 having the face material 43 and supported by the backrest support portion 24 is provided, and the backrest 4 is provided separately from the armrest 7 and is supported by a supporting means different from the connecting portion 5. By being supported by the support portion 24, the orientation of the armrest 7 can be adjusted regardless of the orientation of the backrest surface 431, so that the armrest 7 can be provided in the optimum orientation.

  Further, the backrest 4 is provided on the front side of the backrest support portion 24, the face member 43 is provided on the front side portion of the backrest 4, and the front surface constitutes the backrest surface 431, and the connector is By connecting the armrest 7 and the backrest support portion 24 to the rear of the backrest 4, it is possible to provide a structure in which the coupling tool or tool does not easily interfere with the face material 43 during assembly.

  In addition, the armrest 7 includes the armrest main body 71 having a function and the armrest main body support portion 72 that supports the anterior part main body and is connected to the backrest support portion 24. Since the direction in which the armrest main body support 72 is connected is not affected by the direction in which the armrest main body support 72 is connected to the backrest support 24, the orientation of the armrest main body 71 can be easily set to an optimum state. .

  Further, since the armrest 7 is the armrest 7 on which the seated person rests his or her elbow, even if the armrest 7 is provided at a position close to the backrest 4, a connecting tool or a tool for connecting the armrest 7 to the backrest support portion 24. Can be made to have a structure that does not easily interfere with the face material 43.

Although the embodiment of the chair according to the present invention has been described above, the present invention is not limited to the above embodiment and can be appropriately modified without departing from the spirit of the present invention.
For example, in the above embodiment, the functional portion is the armrest 7, but the backrest main body 41 or the like may have a function other than the armrest.
Further, in the above-described embodiment, the backrest support portion 24 is provided with the connection portion 5 that is connected in a state where the armrest main body support portion 72 is in contact with the armrest main body support portion 72 from the outer side in the width direction. It may not be provided.

Further, in the above embodiment, the armrest 7 is connected to the backrest support portion 24, but may be connected to the backrest body 41. For example, the armrest 7 may be connected to the outer peripheral frame portion 42 of the backrest body 47.
Further, in the above embodiment, the armrest 7 includes an armrest main body 71 on which a seated person rests his or her elbow, and an armrest main body support portion 72 which is provided separately from the armrest main body 71 and supports the armrest main body 71. The main body support portion 72 is connected to the backrest support portion 24, but a portion on which the seated person rests his elbow and a portion connected to the backrest support portion 24 may be integrally provided. Also in such a case, the armrest 7 may be connected to the backrest body 47.

  Further, in the above embodiment, the armrest main body 71 is supported by the armrest main body supporting portion 72 so as to be able to move up and down, but the armrest main body 71 may not move up and down with respect to the armrest main body supporting portion 72.

1 Chair 2 Support structure 4 Backrest 5 Connecting part 7 Armrest (functional part)
24 Backrest support (support structure)
26 Projection plate part 41 Backrest main body 42 Peripheral frame part 43 Face material 62 Second bolt (connector)
71 Armrest body (Functional unit body)
72 Armrest main body support section (functional section main body support section)
431 Backrest surface 463 Face material locking part

Claims (5)

A face material that constitutes a backrest surface on which a seated person leans his back,
A function unit having a predetermined function,
In a chair having a support structure supporting the functional part,
The functional unit and the support structure are connected by a connector,
The connector is inserted into the functional portion and the support structure in a direction oblique to a direction along the backrest surface in a plan view and toward a side approaching from a side separated from the face material. The chair is characterized in that the functional part and the support structure are connected to each other. A backrest having the face member and supported by the support structure,
The chair according to claim 1, wherein the backrest is provided separately from the functional portion, and is supported by the support structure by a support means different from the connecting tool. The backrest is provided on the front side of the support structure,
The face material is provided in a front portion of the backrest, and the front surface constitutes a backrest surface,
The chair according to claim 2, wherein the connecting tool connects the functional portion and the support structure behind the backrest. The functional unit is a functional unit body having the function,
The functional part main body support part attached to the said support structure, and the said functional part main body is attached, The chair as described in any one of Claim 1 thru | or 3 characterized by the above-mentioned.   The chair according to any one of claims 1 to 4, wherein the functional part is an armrest on which a seated person rests his / her arm.

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