JP2016158710A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair excellent in a degree of design freedom of a chair body, for which a special structure is less likely to be required for causing the chair body to support an option.SOLUTION: A chair C includes a chair body C1 having a first frame element 11a and a second frame element 12a that continues to the first frame element and extends in a direction different from the first frame element, and an option 5 supported by the chair body. The option includes an option body 5a and an attaching mechanism 5b for supporting both the option body, and the first and second frame elements.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a chair suitably used for office work or school use.

  Conventionally, a chair in which a memo stand is detachably supported on a chair body is known (see, for example, Patent Document 1).

  However, most of the conventional chairs of this type are provided with a special support structure for supporting the memo stand on the chair body, which limits the degree of design freedom for the chair body. .

  The above situation is not limited to the memo stand, and the same applies to the case where an option such as an armrest is supported on the chair body.

JP 2000-279264 A

  The present invention has been made paying attention to the above circumstances, and at least in a chair that can support an option on the chair body, it is difficult to require a special structure for supporting the option on the chair body. An object of the present invention is to provide a chair having a high degree of freedom in designing the chair body.

  That is, the present invention has the following configuration.

  The chair according to claim 1, a chair body having a first frame element and a second frame element that is continuous with the first frame element and extends in a direction different from the first frame element; And an option supported by the chair body, wherein the option supports the option body and an attachment mechanism for supporting the option body and the first and second frame elements. It is equipped with.

  The chair according to claim 2 is the structure according to claim 1, wherein the chair body has a leg frame having a front leg and a rear leg mainly composed of a pipe material, and an armrest supported by the leg frame. A backrest directly or indirectly supported by the leg frame and a seat supported by the leg frame, wherein the first and second frame elements are the leg frame and the armrest. A frame-shaped portion constituting any one of the backrest and the seat.

  According to a third aspect of the present invention, in the configuration according to the first or second aspect, the first frame element constitutes a rear leg, and the second frame element constitutes a front leg.

  According to a fourth aspect of the present invention, in the configuration of the first, second, or third aspect, the first and second frame elements are each formed of a round pipe material.

  According to a fifth aspect of the present invention, in the configuration according to the first, second, third, or fourth aspect, the attachment mechanism includes a first attachment member and a second attachment member. The first and second frame elements positioned between the mounting member and the second mounting member are sandwiched and supported by the first and second mounting members.

  The chair according to claim 6 is the configuration according to claim 5, wherein the first mounting member is arranged outside the first frame element and outside the second frame element, The second attachment member is disposed inside the first frame element and inside the second frame element.

  The chair according to claim 7 is the configuration according to claim 1, 2, 3, 4, 5 or 6, wherein the option includes a top plate, a support body supporting the top plate, and the support body. A memo stand comprising the attachment mechanism for attaching the first memo stand frame element and the first memo stand frame element to the first memo stand frame element. A second note stand frame element extending in a direction different from one note stand frame element is provided, and the attachment mechanism supports both the first and second note stand frame elements.

  The chair according to claim 8 is the structure according to claim 7, wherein the chair body includes a seat whose position can be changed between a use position and a flip-up position, and the memo stand is used. The top plate that can be repositioned between a position and a retracted position, in a state where the seat is held in the flip-up position, and in a state where the top plate is held in the retracted position, It is configured so that it can be nested in the front-rear direction with other chairs having the same structure.

  As described above, according to the present invention, it is difficult to require a special structure for supporting the option on the chair main body, and it is possible to provide a chair having excellent design flexibility of the chair main body.

The perspective view which shows one Embodiment of this invention. The side view in the embodiment. The rear view in the embodiment. The bottom view in the embodiment. The side view which shows the stacking state in the same embodiment. The top view which shows the stacking state in the same embodiment. The exploded perspective view in the embodiment. The expanded disassembled perspective view in the same embodiment. The expanded disassembled perspective view in the same embodiment. The schematic side view for demonstrating other embodiment. The schematic side view for demonstrating other embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, the present invention is applied to a chair C that can be nested in the front-rear direction, in other words, a chair C that can be stacked in the horizontal direction. As specifically shown in FIGS. 5 and 6, the chair C holds the seat 4 in the flip-up position (H) and holds the top plate 51 of the memo stand 5 in the retracted position (S). It is configured such that it can be nested in the front-rear direction with another chair C having the same structure.

  The chair C includes a rear leg 11 having a first frame element 11a, and a first leg extending in a direction different from the direction in which the first frame element 11a extends while continuing to the first frame element 11a of the rear leg 11. The chair body C1 includes a front leg 12 having a second frame element 12a, and an optional memo stand 5 that is detachably supported by the chair body C1. The memo stand 5 is attached to the right rear leg 11 and front leg 12 of the chair body C1. In this embodiment, the first frame element 11 a constitutes the rear leg 11, and the second frame element 12 a constitutes the front leg 12.

  The chair body C1 includes a leg frame 1 having a portion to which the memo stand 5 is connected, an armrest 2 supported by the leg frame 1, and a backrest 3 supported by the leg frame 1 via the armrest 2. And a seat 4 supported so as to be rotatable with respect to the leg frame 1 between a use position (U) and a flip-up position (H).

  Hereinafter, the chair C will be described in detail.

The leg frame 1 is composed mainly of a metal round pipe material.
. The leg frame 1 includes left and right rear legs 11 having casters 111 at the lower ends, left and right front legs 12 having casters 121 at the lower ends and upper ends connected to the upper portions of the left and right rear legs 11, and the left and right front legs 12. The first horizontal member 13 that is a connecting member that connects the intermediate portions of the first horizontal member 13 and the second horizontal member that is the connecting member that connects the left and right front legs 12 at a position behind the first horizontal member 13. 14.

  The left and right rear legs 11 extend in the up-down direction in such a manner that the upper side is inclined forward so that the upper side is positioned in front of the lower side, and the upper part is an armrest 2 for supporting the armrest 2 and the backrest 3. And it plays a role as a support frame for supporting the backrest 3. An armrest 2 formed integrally with the back plate 31 is attached to the upper end portion of the rear leg 11.

  The left and right rear legs 11 have a first frame element 11a formed of a round pipe material. In this embodiment, the first frame element 11 a is a part connected to the front leg 12 in the upper part of the rear leg 11 and a part in the vicinity thereof. More specifically, the first frame element 11a is a part connected to the upper end of the front leg 12 in the rear leg 11 and a bar-like part extending in the vertical direction in the vicinity thereof. That is, the first frame element 11a is a rod-like portion that is long in a predetermined vertical direction in the rear leg 11 that is close to the upper end of the front leg 12, and is inclined forward so that the upper side is positioned in front of the lower side This is a portion extending substantially linearly in the vertical direction.

  The rear leg 11 includes an armrest connecting portion (not shown) that is a columnar core material having a small diameter at the upper end portion, and an attachment portion 23 of an armrest 2 described later is fitted on the armrest connecting portion so as to be fitted. It has become. The total width, that is, the separation width of the left and right front legs 12 is narrower than the separation width of the rear legs 11 to enable nesting.

  The rear leg 11 has a synthetic resin cushioning member 112 attached to a predetermined position on the inner surface side. The cushioning member 112 can come into contact with the front legs 12 of other chairs C having the same shape during nesting or the attachment mechanism 5b in the memo stand 5 and plays a role of mitigating impact. In this embodiment, the portion near the lower end of the first mounting member 55 in the other chair C is set to be able to hit the buffer member 112 of the chair C during nesting.

  The left and right front legs 12 extend in the vertical direction in a manner that the upper side is inclined rearward so that the upper side is positioned on the rear side of the lower side.

  The left and right front legs 12 have second frame elements 12a formed of a round pipe material. In this embodiment, the second frame element 12 a is the upper part of the front leg 12. More specifically, the second frame element 12a is a rod-like portion extending in the front-rear direction in the vicinity of the portion of the front leg 12 connected to the rear leg 11 and the vicinity thereof. That is, the second frame element 12a is a rod-like portion that is long in a predetermined front-rear direction in the front leg 12 that is positioned close to the rear leg 11, and the lower side is positioned on the front side in a side view than the upper side. In this manner, it is a portion extending in the vertical direction in a forwardly inclined manner.

  The front leg 12 first extends inward and obliquely forward from the upper end to the lower end, and then extends forward via the bent portion 122. In other words, the second frame element 12a in this embodiment includes a bent portion 122 that bends forward.

  The first horizontal member 13 and the second horizontal member 14 are connected to the left and right front legs 12. The upper end of the front leg 12 is connected to the inner peripheral surface side of the rear leg 11 by welding. More specifically, the upper end of the front leg 12 is connected to the front portion on the inner peripheral surface side of the rear leg 11 by welding.

  The first horizontal member 13 is formed so as to have an upwardly convex shape when viewed from the front, and includes a horizontal portion 131 extending horizontally in the left-right direction at an intermediate portion in the left-right direction. The horizontal portion 131 is attached to the lower surface of the seat 4 in the use position (U), more specifically, the lower surface of the seat back cover 44 in the seat 4 in the use position (U). It is designed to be received from below.

  The second horizontal member 14 is provided with a pivotal portion 141 that constitutes a shaft portion that is disposed at both left and right ends and pivotally supports the seat 4.

  Next, the armrest 2 will be described.

  The armrest 2 can support the elbow of the seated person. In this embodiment, the armrest 2 also has a function of supporting the backrest 3 on the leg frame 1. That is, the armrest 2 has a main support in which the front end portion is supported on the upper portion of the rear leg 11 in the leg frame 1 via the mounting portion 23 extending in the vertical direction, and the rear end portion is connected to a protruding portion 312 of the back plate 31 described later. A member 21 and an auxiliary support member provided on the lower side of the main support member 21 so that the front end portion is supported by the leg frame 1 via the attachment portion 23 and the rear end portion is connected to the projecting portion 312. 22. In this embodiment, an armrest 2 and a back plate 31 of a backrest 3 described later are integrally formed of synthetic resin.

  The main support member 21 has an elbow rest surface 21s on the upper surface, and has a rectangular bar shape extending in the front-rear direction. The main support member 21 plays a role of supporting the back plate 31 in cooperation with the auxiliary support member 22. The front end portion of the main support member 21 is integrally connected to the upper portion of the attachment portion 23 attached to the rear leg 11. The rear end of the main support member 21 is integrally connected to the projecting portion 312 of the back plate 31. The main support member 21 has a posture inclined slightly forward from substantially horizontal so that the rear side is positioned higher than the front side in a side view. The front end portion 211 of the main support member 21 has a shape that protrudes forward from the front outer surface 23s of the mounting portion 23 toward the front, and has a shape that is easy for a seated person to put on.

  The auxiliary support member 22 has a rectangular bar shape extending in the front-rear direction, and plays a role of supporting the back plate 31 in cooperation with the main support member 21. The front end of the auxiliary support member 22 is integrally connected to the lower portion of the mounting portion 23. The rear end of the auxiliary support member 22 is integrally connected to the protruding portion 312 of the back plate 31. The auxiliary support member 22 is inclined forward such that the rear side of the main support member 21 is positioned higher than the front side in a side view.

  The main support member 21 and the auxiliary support member 22 are disposed at positions separated from each other, and are disposed in a manner that is not parallel in a side view. In other words, the armrest 2 has the main support member 21 and the auxiliary support member 22 arranged non-parallel. Further, the auxiliary support member 22 is formed thicker than the main support member 21 in a side view. The auxiliary support member 22 is provided so as to extend substantially perpendicular to the direction in which the upper end portion of the leg frame 1 extends. In other words, the auxiliary support member 22 extends in a direction substantially perpendicular to the front side surface and the rear side surface of the upper end portion of the rear leg 11.

  The attachment portion 23 has a cylindrical shape that opens downward. The attachment portion 23 is externally fitted to the upper end portion of the rear leg 11 and is fixed to the rear leg 11 by a screw n inserted from the rear portion of the attachment portion 23. It has become.

  Next, the backrest 3 will be described.

  The backrest 3 is mainly composed of a back plate 31 integrally formed of synthetic resin together with the armrest 2. The backrest 3 includes an overhanging portion 312 on the side edge. More specifically, the backrest 3 includes a back plate body 311 having a substantially rectangular shape in a front view, and an overhanging portion 312 that protrudes outward from an intermediate portion in the vertical direction at a side edge of the back plate body 311. I have.

  The front end edge of the overhanging portion 312 that is the side end portion of the backrest 3, the lower end edge of the main support member 21 of the armrest 2, the upper end edge of the auxiliary support member 22, and the rear end edge of the attachment portion 23 are viewed in side view. The left-right direction opening part K which is the part enclosed in frame shape is formed. The left-right direction opening K has a communication space rk that communicates in the left-right direction on the inside.

  Next, the seat 4 will be described.

  The seat 4 includes a seat support frame (not shown) mainly composed of a pipe material, a seat plate (not shown) arranged on the seat support frame, a covering member 43 covering the upper surface side of the seat plate, and the seat A seat back cover 44 for covering the main part of the support frame and the back side of the seat plate from below is provided. The seat 4 is rotatably supported by the pivotal support portion 141 of the leg frame 1, and is configured to be rotatable between a use position (U) and a flip-up position (H). The seat support frame is provided with a shaft holding member (not shown) that is rotatably engaged with the pivotal support portion 141 of the second horizontal member 14.

  Next, the memo stand 5 as an option supported by the chair body C1 will be described.

  The memo stand 5 includes a memo stand main body 5a as an optional main body and an attachment mechanism 5b that supports the memo stand main body 5a and supports the first and second frame elements 11a and 12a in the chair main body C1. .

  First, the memo stand main body 5a will be described in detail.

  The memo stand body 5a includes a top plate 51 having a substantially rectangular plate shape that can be repositioned between a use position (T) positioned substantially in the horizontal direction and a retreat position (S) depending on the vertical direction. A support body 52 that supports the top plate 51 is provided.

  The top plate 51 has a rectangular flat plate shape, and personal items such as a user's writing can be placed on the upper surface side at the use position (T). The top plate 51 is set to an area smaller than the seat 4.

  The support body 52 includes a memo stand frame 52a mainly composed of first and second frame members 521 and 522, and the top plate 51 provided at the upper end of the memo stand frame 52a at the use position (T). And a top plate support mechanism 52b supported so as to be changeable between the position and the retracted position (S).

  The memo stand frame 52a extends obliquely upward from the rear to the front, and includes a first frame member 521 having a lower frame 521a as a first memo stand frame element, and a lower frame 521a of the first frame member 521. And a second frame member 522 which is a second note base frame element connected continuously by welding and extending in the front-rear direction, which is a direction different from the lower frame 521a. The memo stand frame 52 a is disposed on the outer side of the rear leg 11 and the front leg 12 on the right side (left side in front view) of the leg frame 1.

  The first frame member 521 has a generally U-shape when viewed from the side, and includes a lower frame 521a that is a first note base frame element disposed substantially along the outside of the right rear leg 11, and the lower frame. And an upper frame 521c extending from the upper end of 521a through the bent portion 521b and extending forward.

  The second frame member 522 constitutes a second memo stand frame element, and has an upper end connected to the lower frame 521a and disposed outside the front leg 12 along the upper part of the front leg 12. Yes. The second frame member 522 is located on the oblique front side in the upper part of the front leg 12 and is arranged along the front leg 12. The upper end of the second frame member 522 is connected to the inner peripheral surface of the lower frame 521a in the first frame member 521 by welding. More specifically, the upper end of the second frame member 522 is connected to the front portion on the inner peripheral surface side of the lower frame 521a by welding. The second frame member 522 first extends inward and obliquely forward from the upper end to the lower end, and then extends forward via the bent portion 522c.

  The second frame member 522 has an outer notch 522a as a first engagement portion that can engage with an engagement protrusion 554d as an engaged portion of the first mounting member 55 on the outside of the lower end portion, and a lower end. An inner notch 522b that is a second engaging portion that can be engaged with an engaging protrusion 564d that is an engaged portion of the second mounting member 56 is provided inside the portion. The outer notch 522a is set to a size that closely fits with the engaging protrusion 554d of the first mounting member 55. The inner notch 522b is set to a size that fits closely with the engaging protrusion 564d of the second mounting member 56.

  The top plate support mechanism 52b is provided with a first rotation support portion 523 provided at the upper end of the memo stand frame 52a so as to be rotatable in the front-rear direction, and is rotatable in the left-right direction with respect to the first rotation support portion 523. A second rotation support portion 524 provided, and a mounting plate 525 provided integrally with the second rotation support portion 524 and attached to the back surface of the top plate 51 via screws or the like. Is.

  As shown in FIG. 6, the second rotation support portion 524 is provided with a resin friction portion 524a at the upper end thereof so as to protrude upward. The friction portion 524a can temporarily frictionally engage with the mounting plate 525 when the top plate 51 moves between a position along the horizontal direction (that is, a use position) and a position along the substantially vertical direction. It is configured as follows. In particular, in this embodiment, the friction portion 524a is temporarily connected to the lower surface of the mounting plate 525 at the initial stage when the user changes the top plate 51 from the position along the substantially vertical direction to the position along the horizontal direction. Thus, the top plate 51 is prevented from suddenly moving in the horizontal direction.

  When the top plate 51 of the memo stand 5 is folded from the use position (T) to the retracted position (S), it is performed as follows. First, the top plate 51 is rotated in the left-right direction using the second rotation support portion 524 from a position along the substantially horizontal direction to a position along the substantially vertical direction. Next, the top plate 51 that has transitioned to a position along the vertical direction is rotated in the front-rear direction using the first rotation support portion 523, and is retracted to the outside of the leg frame 1 (S ). As shown in FIG. 6, the top plate 51 in the retracted position (S) has a front end side located inside the rear end side and an upper end side located inside the lower end side. It is superposed with the top plate 51 of another chair C having the same shape.

  Next, the attachment mechanism 5b will be described in detail.

  The attachment mechanism 5b is for supporting the memo stand main body 5a with respect to the chair main body C1. The attachment mechanism 5b includes two first and second attachment members 55 and 56, which are two rigid members, and a plurality of stoppers for tightly coupling the first and second attachment members 55 and 56. It is mainly composed of a screw v as a wearing tool. The first and second attachment members 55 and 56 have a so-called halved structure, and can wrap and hold the first and second frame elements 11a and 12a in the chair body C1, and also the memo base body 5a. The first and second memo stand frame elements 52a and 52b are wrapped and held. In other words, the attachment mechanism 5b not only supports the first and second frame elements 11a and 12a in the chair body C1, but also the first and second note base frame elements 52a and 52b in the memo base body 5a. Are supported together.

  The attachment mechanism 5b is disposed below the memo stand frame 52a. The attachment mechanism 5b includes a first attachment member 55 that is integrally formed of metal, and a second attachment member 56 that is integrally formed of metal. The attachment mechanism 5b has a halved structure in which one side (first attachment member 55) forms a left part and the other side (second attachment member 56) forms a right part.

  First, the first mounting member 55 will be described in detail.

  The first attachment member 55 has a substantially G shape in a side view, and is disposed on the outside of the first frame element 11a and the outside of the second frame element 12a in the chair body C1.

  The first mounting member 55 is disposed on the front side of the first frame element support portion 551 that extends in the up-down direction and is recessed corresponding to the frame shape, and corresponds to the frame shape. And a second frame element support portion 552 extending in the front-rear direction. Further, the first attachment member 55 is disposed on the front side of the first note base frame element support portion 553 that extends in the vertical direction and is recessed corresponding to the frame shape, and the first note base frame element support portion 553. And a second memo stand frame element support portion 554 that extends in the front-rear direction and is recessed corresponding to the frame shape. In this embodiment, a first note base frame element support portion 553 is disposed on the front side of the first frame element support portion 551, and a second note base frame element is provided above the second frame element support portion 553. A support portion 554 is disposed.

  The first frame element support portion 551 has a partially cylindrical shape, and forms an arrangement space sp1 for arranging the first frame element 11a of the rear leg 11. The first frame element support portion 551 has an inner peripheral surface 551 a that can be brought into contact with the outer surface of the first frame element 11 a of the rear leg 11. The upper end edge and the lower end edge of the first frame element support portion 551 are open so as to communicate with the external space. At the rear end of the first frame element support portion 551, a screw insertion hole 551b through which a screw v for coupling to the second mounting member 56 is inserted, and an upper and lower positions for positioning with the second mounting member 56 are provided. A positioning convex portion 551c extending in the direction is provided.

  The second frame element support portion 552 has a partially cylindrical shape, and forms an arrangement space sp2 for arranging the second frame element 12a of the front leg 12. The second frame element support portion 552 has an inner peripheral surface 552a that can be brought into contact with the outer surface of the second frame element 12a of the front leg 12. The front end edge of the second frame element support portion 552 is opened so as to be able to communicate with the external space, and the rear end edge is opened so as to be able to communicate with the arrangement space sp1 of the first frame element support portion 551. Has been. At the lower end of the second frame element support portion 552, a screw insertion hole 552b through which a screw v for coupling to the second mounting member 56 is inserted, and a positioning projection for positioning with the second mounting member 56 A portion 552c is provided.

  The first memo stand frame element support portion 553 has a partially cylindrical shape, and forms an arrangement space sp3 for arranging the lower frame 521a as the first memo stand frame element of the memo stand frame 52a. . The first memo stand frame element support portion 553 has an inner peripheral surface 553a that can be brought into contact with the outer surface of the lower frame 521a. The upper end edge of the first note base frame element support portion 553 is open so as to communicate with the outside. A bottom wall 553c interposed between the arrangement space sp3 and the external space is provided at the lower end edge of the second note base frame element support portion 533. The first note base frame element support portion 533 has a screw insertion hole 553b through which a screw v for coupling to the second attachment member 56 is inserted at the front end, and a position for positioning with the second attachment member 56. A positioning convex portion 553d is provided.

  The second memo stand frame element support portion 554 has a partially cylindrical shape and forms an arrangement space sp4 for arranging the second frame member 522 as the second memo stand frame element of the memo stand frame 52a. ing. The second note base frame element support portion 554 has an inner peripheral surface 554 a that can be brought into contact with the outer surface of the second frame member 522. The front end edge of the second note base frame element support portion 554 is provided with a bottom wall 554c interposed between the arrangement space sp4 and the external space, and the rear end edge thereof supports the first note base frame element. The part 553 is opened so as to communicate with the arrangement space sp4. A screw insertion hole 554 b through which a screw v for connecting to the second attachment member 56 is inserted is provided at the front end portion of the second note base frame element support portion 554. An engagement protrusion 554d that protrudes inward from the inner peripheral surface 554a is formed at the front end portion of the second note base frame element support portion 554. The engaging protrusion 554d can be engaged with the notch 522a of the second frame member 522 in the memo base body 5a. A positioning projection 554e extending in the front-rear direction for positioning with the second attachment member 56 is provided at the upper end of the second note base frame element support 554.

  Next, the second mounting member 56 will be described in detail.

  The second attachment member 56 has a substantially toroidal shape in a side view, and is disposed on the inside of the first frame element 11a and the inside of the second frame element 12a in the chair body C1.

  The second mounting member 56 is disposed on the front side of the first frame element support portion 561 that extends in the vertical direction and is recessed corresponding to the frame shape, and corresponds to the frame shape. And a second frame element support portion 562 extending in the front-rear direction. Further, the second mounting member 56 is disposed on the front side of the first note base frame element support portion 563 and the first note base frame element support portion 563 extending in the up-down direction corresponding to the recessed shape. And a second memo stand frame element support portion 564 extending in the front-rear direction which is recessed corresponding to the frame shape. In this embodiment, a first note base frame element support portion 563 is disposed on the front side of the first frame element support portion 561, and a second note base frame element is provided above the second frame element support portion 563. A support portion 564 is disposed.

  The first frame element support portion 561 has a partially cylindrical shape, and forms an arrangement space sp5 for arranging the first frame element 11a of the rear leg 11. The first frame element support portion 561 has an inner peripheral surface 561 a that can be brought into contact with the inner surface of the first frame element 11 a of the rear leg 11. The upper edge and the lower edge of the first frame element support portion 561 are open so as to communicate with the external space. At the rear end of the first frame element support portion 561, a nut portion 561 b into which a screw v for coupling to the first mounting member 55 is screwed, and the positioning for positioning with the first mounting member 55. A positioning recess 561c that engages with the protrusion 551c is provided.

  The second frame element support portion 562 has a partially cylindrical shape, and forms an arrangement space sp6 for arranging the second frame element 12a of the front leg 12. The second frame element support portion 562 has an inner peripheral surface 562 a that can be brought into contact with the inner surface of the second frame element 12 a of the front leg 12. The front end edge of the second frame element support portion 562 is opened so as to be able to communicate with the external space, and the rear end edge is opened so as to be able to communicate with the arrangement space sp5 of the first frame element support portion 561. Has been. In other words, the second frame element support portion 562 has an opening 562c through which the second frame element 12a can pass at the front end. At the lower end of the second frame element support portion 562, a nut portion 562b into which a screw v for coupling to the first mounting member 55 is screwed, and the positioning protrusion for positioning with the first mounting member 55 A positioning recess 562c that engages with the portion 552c is provided. The second frame element support portion 562 is set to have a shorter length from the base end to the distal end than the adjacent second note base frame element support portion 564, so that the leg frame 1 can be horizontally mounted. Interference with the material 13 is avoided.

  The first note base frame element support portion 563 has a partially cylindrical shape, and forms an arrangement space sp7 for arranging the lower frame 521a as the first note base frame element of the note base frame 52a. . The first memo stand frame element support portion 563 has an inner peripheral surface 563a that can be in contact with the inner surface of the lower frame 521a. The upper end edge and the lower end edge of the first note base frame element support portion 563 are open so as to communicate with the outside. The first memo stand frame element support portion 563 has a nut portion 563b into which a screw v for connecting to the first attachment member 55 is screwed to the front end, and the position for positioning with the first attachment member 55. A positioning recess 563d that engages with the positioning protrusion 553d is provided.

  The second note base frame element support portion 564 has a partially cylindrical shape, and forms an arrangement space sp8 for arranging the second frame member 522 which is the second note base frame element of the note base frame 52a. ing. The second note base frame element support portion 564 has an inner peripheral surface 564 a that can abut on the inner surface of the second frame member 522. The front end edge of the second note base frame element support portion 564 is provided with a bottom wall 564c interposed between the arrangement space sp8 and the external space, and the rear end edge thereof supports the first note base frame element. The part 563 is open so as to communicate with the arrangement space sp7. A nut portion 564 b into which a screw v for connecting to the first attachment member 55 is screwed is provided at the front end portion of the second note base frame element support portion 564. An engagement protrusion 564d that protrudes inward from the inner peripheral surface 564a is formed at the front end of the second note base frame element support 564. The engaging protrusion 564d can engage with the notch 522b of the second frame member 522 in the memo stand main body 5a. A positioning recess 564e that engages with the positioning protrusion 554e extending in the front-rear direction for positioning with the first attachment member 55 is provided at the upper end of the second note base frame element support 564. A cutout portion 564f for avoiding interference with the horizontal member 13 of the leg frame 1 is provided at an intermediate portion of the lower end portion of the second note base frame element support portion 564.

  The memo stand body 5a is attached to the chair body C1 by the mounting mechanism 5b described above. Specifically, the first and second frame elements 11a, 12a of the leg frame 1 in the chair body C1 and the first attachment member 55 and the second attachment member 56 constituting the attachment mechanism 5b, and The lower frame 521a, which is the first memo stand frame element of the memo stand main body 5a, and the second frame member 522, which is the second memo stand frame element of the memo stand main body 5a, are disposed, and then the first, The second mounting members 55 and 56 are configured so as to be supported by sandwiching each part from the left and right directions.

  The first and second mounting members 55 and 56 are tightly coupled by a screw v. As a result, the outer surfaces of the first and second frame elements 11a and 12a are connected to the inner circumferences of the first and second frame element support portions 551, 552, 561, and 562 in the first and second mounting members 55 and 56, respectively. The surfaces 551a, 552a, 561a, and 562a are in close contact with each other, and movement relative to the first and second attachment members 55 and 56 is suppressed. Furthermore, the outer surfaces of the first and second note base frame elements (lower frame and second frame member) 521a and 522 are the first and second note base frame elements in the first and second attachment members 55 and 56, respectively. The support portions 553, 554, 563, and 564 are in close contact with the inner peripheral surfaces 553a, 554a, 563a, and 564a, and the movement with respect to the first and second attachment members 55 and 56 is suppressed.

  In addition, regarding the attachment with respect to the chair main body C1 of the attachment mechanism 5b, the 2nd attachment member 56 is temporarily arrange | positioned with respect to the chair main body C1 at a predetermined position as follows. That is, the 2nd attachment member 56 is attached from the back side of the chair main body C1, as shown in FIG. The second mounting member 56 inserted from the rear is disposed in a gap sk between the right side edge of the seat 4 and the rear leg 11 and the front leg 11 of the leg frame 1. Since the opening part 562c is formed in the second note base frame element support part 552, the second attachment member 56 can pass the second frame element 12a of the front leg 12 through the opening part 562c. Thus, the second mounting member 56 can be provisionally arranged smoothly at a predetermined position.

  As described above, the chair C according to the present embodiment includes the first frame element 11a and the second frame element 11a that is continuous with the first frame element 11a and extends in a direction different from the first frame element 11a. A chair body C1 having a frame element 12a and an optional memo stand 5 supported by the chair body C1 are provided. The memo stand 5 includes a memo stand main body 5a as an optional main body, and an attachment mechanism 5b that supports the memo stand main body 5a and supports the first and second frame elements 11a and 12a together. For this reason, since the attachment mechanism 5b supports both the first frame element 11a and the second frame element 12a, it is difficult to require a special structure for supporting the memo stand 5 on the chair body C1 side. It becomes possible to provide the chair C that is excellent in the degree of freedom in designing the chair body C1. That is, in this embodiment, although the memo stand 5 can be detachably attached to the chair body C1, there is no special mounting structure for supporting the memo stand 5 on the chair body C1 side. The appearance of the chair body C1 is not damaged because the memo stand 5 is attached.

  The chair body C1 includes a leg frame 1 mainly composed of a pipe material, an armrest 2 supported by the leg frame 1, and a backrest 3 indirectly supported by the leg frame 1 via the armrest 2. And a seat 3 supported by the leg frame. And said 1st, 2nd frame element 11a, 12a is a frame-shaped site | part which forms the said chair main body C1. For this reason, the memo stand main body 5a can be suitably attached to the chair main body C1.

  Since the first frame element 11a constitutes the rear leg 11 and the second frame element 12a constitutes the front leg 12, the attachment mechanism 5b can be suitably attached.

  The first and second frame elements 11a and 12a are each formed of a round pipe material. Even if it is such, the memo stand main body 5a can be suitably supported with respect to the chair main body C1 by the attachment mechanism 5b.

  The attachment mechanism 5 b includes a first attachment member 55 and a second attachment member 56. The first and second frame elements 11a and 12a positioned between the first mounting member 55 and the second mounting member 56 are sandwiched between the first and second mounting members 55 and 56. It is comprised so that it may support. More specifically, the first mounting member 55 is disposed on the outside of the first frame element 11a and the outside of the second frame element 12a, and the second mounting member 56 is These are arranged inside the first frame element 11a and inside the second frame element 12a. For this reason, the memo stand main body 5a can be suitably supported by the chair main body C1 by sandwiching the first and second frame elements 11a, 12a by the first and second mounting members 55, 56. .

  The memo stand 5 includes a top board 51, a support body 52 that supports the top board 51, and an attachment mechanism 5b for attaching the support body 52 to the chair body C1. The support body 52 includes a lower frame 521a that is a first note base frame element, and a second frame that is continuous with the lower frame 521a and extends in a direction different from the lower frame 521a. Member 522. The attachment mechanism 5b supports the lower frame 521a and the second frame member 522, which are the first and second note base frame elements. For this reason, the memo stand main body 5a and the attachment mechanism 5b can be handled as separate members, which is convenient for the management of the parts constituting the memo stand 5 and facilitates the manufacture of the attachment mechanism 5b. It will be a thing.

  The chair body C1 includes a seat 4 whose position can be changed between a use position (U) and a flip-up position (H). The memo stand 5 includes a top plate 51 whose position can be changed between the use position (T) and the retracted position (S). The chair C is in the front-rear direction with the other chairs C having the same structure in the state where the seat 4 is held in the flip-up position (H) and the top plate 51 is held in the retracted position (S). It is configured so that it can be nested. For this reason, when not in use, the chair body C1 can be stored efficiently with the memo stand 5 attached thereto.

  The present invention is not limited to the embodiment described in detail above.

  The first frame element and the second frame element in the chair body can be various parts, and are not limited to those shown in the above-described embodiments. The chair body is a leg frame mainly composed of a pipe material, an armrest supported by the leg frame, a backrest supported directly or indirectly by the leg frame, and a seat supported by the leg frame. And the first and second frame elements may be frame-like portions in the leg frame, armrest, backrest, and seat that form the chair body. The “frame-like” portion may be any portion that extends in a certain direction, and may have any shape.

  Here, in FIG. 10, the chair C which is other embodiment is shown. In FIG. 10, the same or corresponding components as those of the above-described embodiment will be described with the same reference numerals, and description thereof will be omitted.

  In this embodiment, the attachment mechanism 5b is applied to a portion different from the above-described embodiment. In this embodiment, the chair C is continuous with the front / rear extension part 24 of the armrest 2 as the first frame element, and the front / rear extension part 24 via the bent part 26, and extends in a direction different from the front / rear extension part 24. It comprises a chair body C1 having a vertically extending portion 25 as a second frame element, and an optional memo stand 5 supported by the chair body C1. The memo base 5 includes a memo base main body 5a and an attachment mechanism 5b that supports the memo base main body 5a and supports the front / rear extension part 24 and the vertical extension part 25 together. The vertical extending portion 25 is integrally connected to the upper end of the rear leg 11. The front / rear extension part 24 and the upper / lower extension part 25 are integrally formed of a round pipe material. Even in such a case, the intended purpose can be achieved. In this embodiment, the attachment mechanism 5 b supports both the lower part of the upper frame 521 c as the first frame element in the memo stand 5 and the lower frame 521 a as the second frame element in the memo stand 5. Note that the memo base body 5b and the attachment mechanism 5b may be integrated with each other in advance.

  What is supported by the chair body may be an option provided for the convenience of use by the seated person. That is, the option is not limited to the memo stand as shown in the above-described embodiment, and various options can be applied.

  Other options include, for example, armrests.

  Here, in FIG. 11, the chair C which is other embodiment is shown. In FIG. 11, the same or corresponding components as those of the above-described embodiment will be described with the same reference numerals, and the description thereof will be omitted.

  In this embodiment, the attachment mechanism 5b is applied to a different part from the above-described embodiments, and options are different from those of the above-described embodiments. That is, the option is an auxiliary armrest 5 for placing a seated person's elbow.

  The chair C includes a chair body C1 having an attachment portion 23 of the armrest 2 as a first frame element, and an auxiliary support member 22 that is continuous with the attachment portion 23 and extends in a direction different from the attachment portion 23, And an auxiliary armrest 5 as an option supported by the chair body C1. The auxiliary armrest 5 includes an armrest body 5a that is an optional body including an armrest 57 having an armrest surface 57s on the upper surface side, and an armrest frame 58 that supports the armrest 57, and the armrest body. And an attachment mechanism 5b that supports the attachment portion 23 and the auxiliary support member 22 together. Even in such a case, the intended purpose can be achieved. A part of the attachment mechanism 5b is fitted in a left-right opening K having a communication space rk formed by the armrest 2 and the backrest 3 of the chair body C1. In this embodiment, the attachment mechanism 5b includes the auxiliary frame provided continuously through the bent portion 58b at the lower portion of the upper frame 58c as the first frame element in the auxiliary armrest 5 and the lower portion of the upper frame 58c. The lower frame 58a which is the second frame element in the armrest 5 is supported together. Note that all or part of the armrest main body 5a and the attachment mechanism 5b may be integrated with each other in advance.

  In the embodiment described above, the first and second frame elements were formed of a round pipe material, but a prismatic or rectangular tube-shaped frame member or pipe material was applied. Also good.

  The attachment mechanism may not include the first and second attachment members. That is, the attachment mechanism may be configured mainly with a single attachment member.

  The first and second attachment members are not limited to moving in the left-right direction and sandwiching the first and second frame elements. For example, the first and second attachment members may be configured to move in the front-rear direction to sandwich the first and second frame elements.

  In the above-described embodiment, the memo stand has been described in which the memo stand main body and the attachment mechanism are separately configured to be detachable. However, even if the memo stand main body and the attachment mechanism are configured integrally. Good. For example, either the first attachment member or the second attachment member constituting the attachment mechanism may be integrally formed with the memo stand main body.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

5 ... Memo stand (option)
5a ... Optional body 5b ... Mounting mechanism 11a ... First frame element 12a ... Second frame element C ... Chair C1 ... Chair body

Claims (8)

A chair body having a first frame element and a second frame element continuous to the first frame element and extending in a direction different from the first frame element, and an option supported by the chair body A chair comprising
A chair, wherein the option includes an option body and an attachment mechanism that supports the option body and supports the first and second frame elements together. The chair body includes a leg frame having a front leg and a rear leg mainly composed of a pipe material, an armrest supported by the leg frame, and a backrest supported directly or indirectly by the leg frame; A seat supported by the leg frame;
2. The chair according to claim 1, wherein the first and second frame elements are frame-shaped portions constituting any of the leg frame, the armrest, the backrest, and the seat. The chair according to claim 1 or 2, wherein the first frame element constitutes a rear leg, and the second frame element constitutes a front leg. The chair according to claim 1, 2, or 3, wherein the first and second frame elements are each formed of a round pipe material. The attachment mechanism includes a first attachment member and a second attachment member,
The first and second frame elements positioned between the first mounting member and the second mounting member are configured to be sandwiched and supported by the first and second mounting members. The chair according to claim 1, 2, 3 or 4. The first mounting member is disposed outside the first frame element and outside the second frame element;
The chair according to claim 5, wherein the second mounting member is disposed inside the first frame element and inside the second frame element. The option is a memo stand comprising a top board, a support body that supports the top board, and the attachment mechanism for attaching the support body to the chair body,
The support body includes a first note base frame element and a second note base frame element that is continuous with the first note base frame element and extends in a direction different from the first note base frame element. Have
The chair according to claim 1, 2, 3, 4, 5, or 6, wherein the attachment mechanism supports the first and second note base frame elements together. The chair body includes a seat whose position can be changed between a use position and a flip-up position.
The memo stand is provided with the top plate whose position can be changed between a use position and a retracted position,
8. It is configured to be capable of nesting in the front-rear direction with another chair having the same structure in a state where the seat is held in the flip-up position and a state where the top plate is held in the retracted position. The listed chair.

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