JP2020049030A - Chair - Google Patents

Abstract

To provide a chair having composition in which seating person support elements including a seat, a backrest, and an arm rest are installed on an integrated base with a mode that looks impressive and excels in installation strength.SOLUTION: The chair A has a base part B in which four legs consisting of front legs 1 and rear legs 2 are integrally combined with each other through connection materials including a front connection material 3, a rear connection material 4, and left/right side connection materials 6. On the base part B of the chair, there are installed seating person support elements Y which include a backrest 7, a seat 9 and left/right arm rests 8. Of the seating person support elements Y, the backrest 7 and the left/right arm rests 8 are constituted of a back arm structure K which is principally made of synthetic resin. In the lower part of the backrest 7 and the tip end part of the arm rests 8 constituting the back arm structure K, there is provided a part to be inserted which is an installation part to the base part B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a chair.

  2. Description of the Related Art Conventionally, as a chair using a pipe material, a chair having four legs and an armrest installed between upper end portions of a front leg and a rear leg constituting the four legs is known (for example, , Patent Document 1). In this chair, a base portion integrated by four legs and an elbow pad is formed. The chair has a seat and a backrest that can be attached to the base portion.

  However, the chair having such a configuration has a problem that it is difficult to appropriately and sufficiently secure a mounting area between the base portion and the backrest. That is, the base portion has a structure in which it is difficult to appropriately secure a mounting area for the backrest, and thus it is difficult to secure the mounting strength of the backrest.

  Further, the base portion has a problem that it is difficult to make the appearance of the attachment portion to the backrest suitable for the structure, and it is necessary to cover the attachment portion with an upholstery or the like.

JP 2010-255963 A

  The present invention has been made in view of the above circumstances, and, with respect to an integrated base, a seat, a backrest, and an occupant support element including an armrest. An object of the present invention is to provide a chair configured to be attached in a manner.

  That is, the present invention has the following configuration.

  The invention according to claim 1 has a base portion in which four legs extending in the longitudinal direction are connected to each other via a connecting member and integrated, and a backrest, a seat, and left and right are placed on the base portion. A chair provided with a seating support element including an armrest, wherein the backrest and the left and right armrests are integrally formed mainly of a synthetic resin. The chair comprises a body, and a lower end portion of the backrest and an end portion of the armrest are provided with attachment portions to the base portion, respectively.

  In the invention according to claim 2, the four legs are constituted by two front legs and a rear leg, and the front legs and the rear legs each include a front leg body and a rear leg body made of a pipe material. The mounting portion is inserted into upper end inner diameter portions formed at upper end portions of the front leg body and the rear leg body, respectively, and the base portion and the back elbow structure are connected to each other. The described chair.

  The invention according to claim 3 is set so that the outer diameter of each upper end of the front leg body and the rear leg body, the outer diameter of the armrest body in the armrest, and the outer diameter of the main body support frame in the backrest. 3. The chair according to claim 2, wherein the four legs and the back elbow structure are connected substantially continuously without any level difference.

  The invention according to claim 4 is the chair according to claim 1, wherein the distance between the four legs in the horizontal direction is set so as to gradually increase from the upper end toward the lower end. It is.

  The invention according to claim 5 has a base portion in which four vertically extending legs are connected to each other via a connecting member and integrated, and a backrest, a seat, and left and right are placed on the base portion. A chair provided with a seating support element including an armrest, wherein the backrest and the left and right armrests are integrally formed mainly of a synthetic resin. The chair has a body and is provided with attachment portions to the back elbow structure at upper end portions of the four legs.

  As described above, according to the present invention, the seat, the backrest, and the occupant support element including the armrest can be attached to the integrated base in a manner that makes the appearance and appearance excellent in attachment strength. Chair can be provided.

FIG. 1 is a perspective view showing an embodiment of the present invention. The right view in the embodiment. The front view in the embodiment. The top view in the embodiment. The perspective view in the embodiment. The exploded perspective view in the 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 A that can be suitably used in a conference or the like.

  The chair A is composed of four longitudinally extending left and right front legs 1 and left and right rear legs 2 which are connected by a front connecting member 3, a rear connecting member 4, and left and right side connecting members 5, 6. And a base part B integrated with each other through the base member, and a backrest 7, left and right armrests 8, and a seated person support element Y including a seat 9 are mounted on the base part B. is there. The backrest 7 and the left and right armrests 8 of the occupant support element Y constitute a back elbow structure K integrally formed mainly of a synthetic resin. At the lower end of the backrest 7 and at the tip of the armrest 8, inserted portions 73 and 82, which are attachment portions to the base portion B, are provided.

  Here, “mainly made of synthetic resin” means that the main material is a synthetic resin, but it may include a metal material or the like for increasing the strength as another material. .

  Hereinafter, the chair A will be described in detail.

  The front leg 1 includes a front leg main body 11 made of a pipe material, and a caster 12 attached to a lower end of the front leg main body 11. The upper end portion of the front leg main body 11 is provided with an upper end inner diameter portion 11a into which the inserted portion 82 serving as a mounting portion provided at the distal end portion of the armrest 8 is inserted.

  The rear leg 2 includes a rear leg main body 21 made of a pipe material and a caster 22 attached to a lower end of the rear leg main body 21. The upper end portion of the rear leg main body 21 is provided with an upper end inner diameter portion 21a into which the inserted portion 73 as an attachment portion provided at the lower end portion of the backrest 7 is inserted.

  The horizontal distance between the left and right front legs 1 and the left and right rear legs 2 as the four legs is set so as to gradually increase from the upper end to the lower end.

  The front connecting member 3 is made of a pipe member extending in the left-right direction. The front connecting member 3 connects between the left and right side connecting members 5 and 6. The front connecting member 3 is disposed substantially parallel to the rear connecting member 4. The front connecting member 3 is arranged before the rear connecting member 4. The left and right ends of the front connection member 3 are welded to the left and right side connection members 5 and 6.

  The rear connecting member 4 is made of a pipe member extending in the left-right direction. The rear connecting member 4 connects between the left and right side connecting members 5 and 6. The rear connecting member 4 is disposed substantially parallel to the front connecting member 4. The rear connecting member 4 is disposed after the front connecting member 3. Left and right ends of the rear connecting member 4 are welded to left and right side connecting members 5 and 6. The rear connecting member 4 rotatably supports the seat 9 between a normal position and a flipped-up position. That is, an intermediate portion in the left-right direction of the rear connecting portion 4 also serves as a rotation axis of the seat 9.

  The left and right side connecting members 5, 6 are made of a pipe material extending in the front-rear direction. The left and right side connecting members 5 and 6 connect the front leg 1 and the rear leg 2. The front ends of the left and right side connecting members 5 and 6 are welded to the front leg body 11, and the rear ends of the left and right side connecting members 5 and 6 are welded to the rear leg body 21.

  In the back elbow structure K, the backrest 7 and the armrest 8 are integrally formed mainly of a synthetic resin.

  The backrest 7 has a horizontally long rectangular shape when viewed from the front, and has a backrest body 71 formed in a plate shape, a column-shaped body support frame 72 extending downward from both sides of the backrest body 71, and a body support frame. An insertion portion 73 is provided as a mounting portion protruding downward from a lower end portion of the insertion portion 73.

  The backrest body 71 has an outer shape of a pipe material as viewed from the back side, surrounds the left and right side ends and the upper end, and has both right and left lower ends continuous with the upper end of the main body support frame 72; A plate-shaped portion disposed inside the peripheral frame portion. The inserted portion 73 is a columnar member having a smaller diameter than the main body support frame 72. The inserted portion 73 extending downward from the lower end of the main body support frame 72 is formed with a plurality of recesses 73 a extending in the vertical direction at intervals, and is configured to be easily inserted into the upper end inner diameter portion 21 a of the rear leg 2. ing.

  The armrest 8 includes an armrest body 81 extending forward from the backrest 7 and having an upper surface functioning as an armrest, and an inserted portion 82 as a mounting portion protruding downward from a distal end portion of the armrest body 81. I have.

  The armrest body 81 has a rear end serving as a base end connected to left and right outer surfaces at a lower end of the backrest body 71. The armrest main body 81 is bent inward from a front end portion of the horizontal extension portion 81a in a plan view and a horizontal extension portion 81a extending substantially horizontally in a side view from the backrest 7. And a downwardly extending portion 81b which extends downward in a curved line so as to project inward in a front view and a side view. The inserted portion 82 extending downward from the lower end of the lower extending portion 81b has a plurality of recesses 82a extending in the vertical direction at intervals, and is configured to be easily inserted into the upper end inner diameter portion 11a of the front leg 1. ing.

  The seat 9 is made of a synthetic resin. The seat 9 includes a seat main body 91 having a seating surface formed on an upper surface, and a shaft supporting portion 92 provided on the lower surface of the seat main body 91 and supporting an intermediate portion in the left-right direction of the rear connecting member 4 functioning as a rotating shaft. . Note that the upper surface and the peripheral edge of the seat 9 are covered with a skin material (not shown) as necessary.

  Thus, in the back elbow structure K in which the backrest 7 and the armrest 8 are integrally formed, the inserted portions 73 and 82 as attachment portions provided in the back elbow structure K are provided in the base portion B. By being inserted into the upper end inner diameter portions 21a and 11a, it can be connected to the base portion B.

  In this embodiment, the outer diameter of the upper end of the front leg main body 11 and the outer diameter of the armrest main body 81 are set to values substantially matching each other, and the outer diameter of the upper end of the rear leg main body 21 and the backrest 7, the outer diameter of the main body support frame 72 is set to a value that substantially matches. For this reason, the left and right front legs 1 and the left and right rear legs 2 and the back elbow structure K, which are the four legs, are connected in a state where the outer surfaces are substantially flush with each other without causing a step at the connection portion. It has become.

  In the chair A of this embodiment, the connecting portion between the left and right front legs 1 and the lower extension portion 81b of the armrest main body 81 is located at a position separated downward from the horizontal extension portion 81a. Further, the connection portion between the left and right rear legs 2 and the main body support frame 72 in the backrest 7 is located near the rear end corner of the seat 9. For this reason, the portion that touches the seated person is mainly composed of the back elbow structure K, that is, the synthetic resin. For this reason, in the chair A, the seated person does not feel the coldness of metal or the like at the time of sitting, and it is difficult for the seated person to touch the connection part, so that it is difficult for the seated person to feel a step. ing.

  As described above, the chair A according to the present embodiment includes the left and right front legs 1 and the left and right rear legs 2, which are four legs extending in the vertical direction, connected to the front connection member 3 and the rear connection member 4. , And a base portion B integrated with each other via left and right side connecting members 5 and 6. Then, on the base portion B, a seated person supporting element Y including a backrest 7, left and right armrests 8, and a seat 9 is attached. The backrest 7 and the left and right armrests 8 of the occupant support element Y constitute a back elbow structure K integrally formed mainly of synthetic resin. At the lower end of the backrest 7 constituting the back elbow structure K and at the tip of the armrest 8, inserted portions 73 and 82 as attachment portions to the base portion B are provided, respectively. For this reason, the chair has a configuration in which the occupant support element Y including the seat 9, the backrest 7, and the armrest 8 can be attached to the integrated base portion B with good appearance and excellent attachment strength. A can be provided. That is, since the base portion B is integrated and the occupant support element Y can be attached to the integrated base portion B, a chair having a simple structure and excellent rigidity is realized. It is easy to do. Moreover, the backrest 7 and the pair of left and right armrests 8 are integrally formed mainly of synthetic resin. For this reason, both sides of the backrest 7 in the present embodiment are unlikely to have a complicated structure in which the mounting portions of the backrest and the armrest and the mounting portions of the backrest and the rear leg are concentrated as in the related art. It has excellent design freedom to simplify In addition, with the configuration shown in the present embodiment, the attachment portion of the back elbow structure K to the base portion B is easily made visually inconspicuous, so that the attachment portion actively uses upholstery or a cover. It is not necessary to hide it.

  The left and right front legs 1 and the rear legs 2 constitute four legs. The front legs 1 and the rear legs 2 each include a front leg body 11 and a rear leg body 21 made of a pipe material. Then, the inserted portions 82 and 73, which are attachment portions, are inserted into upper end inner diameter portions 11a and 21a formed on the upper end portions of the front leg body 11 and the rear leg body 21, respectively, and the base portion B and the back elbow structure K are mutually connected. Connected. For this reason, the two front legs 1 and the rear legs 2 that are the four legs take a form connected to each other not only by the front and rear connecting members 3 and 4 and the right and left connecting members 5 and 6 but also by the back elbow structure K. Therefore, the rigidity of the chair A as a whole is extremely high.

  The outer diameters of the upper ends of the front leg body 11 and the rear leg body 21 are set to be equal to the outer diameter of the armrest body 81 in the armrest 8 and the outer diameter of the main body support frame 72 in the backrest 7. The left and right front legs 1 and the left and right rear legs 2, which are four legs, and the back elbow structure K are connected substantially continuously without any level difference. For this reason, a continuous appearance is created without the appearance of a step that easily impairs visually good appearance, and the appearance is excellent.

  The distance between the left and right front legs 1 and the left and right rear legs 2 in the horizontal direction is set to gradually increase from the upper end to the lower end. For this reason, the joint between the back elbow structure K and the four legs 1 and 2, ie, the inserted portions 73 and 82 of the back elbow structure K and the upper end inner diameter portions 11a and 21a of the base portion B, gradually expand downward. Therefore, after the back elbow structure K is connected to the base portion B, the back elbow structure K is hardly detached from the base portion B.

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

  The specific shapes of the backrest and the armrests can adopt various shapes, and are not limited to those described in the above embodiments.

  The configuration of the connecting member for connecting the four legs can also apply various configurations, and is not limited to the configuration described in the above-described embodiment.

  The lower ends of the front legs and the rear legs of the four legs may be connected by a base frame.

  The pipe material is not limited to those having substantially the same outer diameter at any point in the stretching direction. For example, the pipe material may be configured such that the outer dimensions gradually increase from one end to the other end.

  Attachments to the back elbow structure may be provided at the upper ends of the four legs. For example, it is assumed that an inserted portion which is an attachment portion having a smaller diameter than the leg is provided at an upper end portion of the four legs, and a lower end portion of the backrest and a distal end portion of the armrest in a back elbow structure. May be provided with a lower end inner diameter portion into which the inserted portion is inserted.

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

A: Chair B: Base part Y: Seated person support element K: Back elbow structure 1 ... Front leg 2 ... Rear leg 7 ... Backrest 8 ... Armrest

Claims (5)

It has a base unit formed by connecting four legs extending in the vertical direction to each other via a connecting member, and a seated person support including a backrest, a seat, and left and right armrests on the base unit. A chair with elements attached,
Of the seated person support elements, the backrest and the left and right armrests constitute a back elbow structure integrally formed mainly of synthetic resin,
A chair provided with attachment portions to the base portion at a lower end portion of the backrest and a tip end portion of the armrest, respectively. The four legs are constituted by two front legs and a rear leg,
The front leg and the rear leg each include a front leg body and a rear leg body made of a pipe material,
The chair according to claim 1, wherein the attachment portion is inserted into upper end inner diameter portions formed at upper end portions of the front leg body and the rear leg body, respectively, and the base portion and the back elbow structure are connected to each other. The outer diameter of the upper end of each of the front leg body and the rear leg body is set so that the outer diameter of the armrest body in the armrest and the outer diameter of the main body support frame in the backrest coincide with each other. 3. The chair according to claim 2, wherein the leg and the back elbow structure are connected substantially continuously without a step. 4. The chair according to claim 1, wherein the distance between the four legs in the horizontal direction is set so as to gradually increase from an upper end to a lower end. 5. It has a base unit formed by connecting four legs extending in the longitudinal direction to each other via a connecting member, and has a backrest, a seat, and a left and right armrest on the base unit. A chair with elements attached,
Of the seated person support elements, the backrest and the left and right armrests constitute a back elbow structure integrally formed mainly of synthetic resin,
A chair provided with attachment portions to the back elbow structure at upper end portions of the four legs.

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