JP4088196B2 - Seat and chair - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat and a chair that can be suitably applied to a chair having a tilt mechanism and the like.
[0002]
[Prior art]
Conventionally, chairs used in offices have been devised mainly for the purpose of improving sitting comfort. Recently, multifunctional chairs having various mechanisms such as a back-and-tilt mechanism (see, for example, Patent Document 1), a seat lifting / lowering mechanism, and a seat front / rear slide mechanism have been developed. In particular, in providing these functions, improvements and improvements in the vicinity of the seats of chairs are progressing.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 8-214983
[Problems to be solved by the invention]
However, as chairs become more multifunctional in this way, not only is this disadvantageous in terms of price, but the internal structure becomes complex and at the same time the degree of design freedom decreases due to interference between members. Can also occur. For example, a rotating shaft is usually indispensable to make the backrest and seat moveable, but the position of the rotating shaft can be gathered from the backrest and the seat uniquely in the vicinity of the seat rest and the seat can be rotated. There is also a mounting portion of the supporting column that is supported by the seat. For this reason, the seat has a complicated shape and a large number of parts corresponding to these functions.
Specifically, the seat support includes a bottom wall supported by the leg support and a side wall rising from the opposite two side edges of the bottom wall, and supports the seat on the upper edge side of the side wall. It is customary to form a front-rear direction wall that serves as a scaffold for the reaction force structure of the tilt mechanism at an appropriate part of the above, and at a part that does not interfere with the support column or the like. Such front and rear walls are formed by drawing, welding separate parts, etc., but drawing requires large-scale equipment and the thickness of the finished product becomes uneven. In addition, advanced technology is required. In addition, a method of joining a plurality of members by welding to create a component having a complicated shape has been adopted, but such welding takes time and labor manually, and there is a problem in terms of strength. Become. And if a chair is multi-functionalized by these methods, the problem that such equipment, technology, and labor are directly added to the production cost becomes inevitable.
[0005]
The present invention has been made in view of such circumstances, and allows a box-shaped seat receiver including a side wall and a front-rear wall to be easily and appropriately made, thereby increasing the functionality of the chair. Contributing is the primary challenge.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, a seat support according to the present invention includes a bottom wall supported by a leg column, a side wall rising from opposite two side edges of the bottom wall, and at least a front edge or a rear edge of the bottom wall. When creating a box-shaped seat support that rises from one side and has opposite front and rear walls connected to the corresponding side walls, the seat support is configured by bending a single plate. It is something to try. And, the side wall and the front-rear wall are made to stand at a predetermined position while letting the excess portion of the plate material generated between the part to be the side wall and the front-rear wall to the internal space or the external space of the seat receiver. It is.
[0007]
With such a configuration, since the seat receiver is composed of a single plate material, the number of parts can be minimized and the cost of the mold can be suppressed. Further, compared to welding, a plurality of parts are not joined, so that the strength of the seat receiver can be improved, and the labor for joining the parts can be saved. Furthermore, since it is configured by bending a single plate material, it is technically simple compared to, for example, drawing, the thickness of the finished product can be uniform, and the production equipment is also bent. Equipment costs can also be effectively suppressed because of the use of the above-mentioned one.
[0008]
Even in such a folding structure, in order to be able to appropriately support the overload applied to the seat, it is effective to configure the chair by supporting the seat at the upper edge of the side wall and the front-rear wall.
[0009]
Specific embodiments of the present invention include a bottom wall supported by leg posts, a side wall rising from opposite two side edges of the bottom wall, and rising from at least one of a front edge or a rear edge of the bottom wall. The opposite two side edges are provided with inclined walls respectively connected to the corresponding side walls, and a seat is supported on the upper edge side of the side walls, and mechanical parts are attached to the inclined walls. The seat receiver is formed by bending a single plate material, and two main fold lines reaching from the front end side to the rear end side of the plate material at the time of bending are set at substantially right and left symmetrical positions, A part of the two main fold lines is valley-folded to form opposite two side edges of the bottom wall, and a horizontal fold line is set between the corresponding two portions of the two opposite side edges. By folding along the fold line, the front wall or the rear edge of the bottom wall is set, and two sub fold lines branching inward from the main fold line toward the end side from the predetermined position are set, and this sub fold line The sub-fold line is inclined upward as it goes to the edge side of the plate material by valley-folding the remaining area of the main fold line while folding the mountain, and the sub-fold line, the horizontal fold line, and the edge are The surface of the enclosed plate material is configured to be the inclined wall. That.
[0010]
With such a configuration, for example, it is possible to attach the support column to the bottom wall and attach various mechanism components to the inclined wall, and set the protruding direction of the mechanism component away from the support column. And since the box-shaped seat receiver is comprised by bending, the various advantages mentioned above can be enjoyed compared with welding or drawing.
[0011]
In the above embodiment, in order to easily and effectively increase the support for the seat, outer pieces are provided on the outer sides of the two main fold lines via the second main fold lines, respectively, and the second main fold lines are It is desirable that the outer piece is arranged at a position continuous with the upper edge of the side wall by folding and the seat is supported by the outer piece.
[0012]
In order to be able to easily set the inclination angle of the seat, it is effective to set the upper edge of the side wall to be inclined with respect to the bottom wall.
[0013]
In addition, a chair according to the present invention is configured by using the seat receiver, and supports a back near one end, and a spring force transmission member that transmits a reaction force by a spring to the back support And the reaction force by the spring is applied to the back support rod while compressing the spring via the spring force transmission member in accordance with the backward tilting operation of the back support rod. In such a chair, by attaching one end of a spring force transmission member, which is a mechanical component, to a predetermined portion of the inclined wall of the seat receiver substantially vertically, the spring mounting angle can be inclined outward. Preferred.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0015]
The seat receiver 1 according to the present embodiment has a shape as shown in the perspective views of FIGS. 2 and 5 by processing a plate material 10 such as an iron plate as shown in the plan view of FIG. 1 by bending. It is what.
[0016]
The plate member 10 has a symmetrical shape when viewed from the front-rear direction, and includes a plurality of fold lines provided substantially along the front-rear direction or substantially along the width direction substantially orthogonal to the front-rear direction, and punching or the like. And provided with a plurality of holes.
[0017]
The folding line along the general front-rear direction of the plate member 10 is branched inward from the main fold lines 11a and 11b extending from the front end side 12 to the rear end side 13 of the plate member 10 and the main fold lines 11a and 11b. The sub-fold lines 111a and 111b reaching the rear end side 13, the sub-fold lines 112a and 112b reaching the front end side 12 from the vicinity of the bent portions of the main fold lines 11a and 11b, and further outside the main fold lines 11a and 11b. The second main fold lines 113a and 113b provided in the direction parallel to the side edges 14a and 14b of the plate member 10 are provided. The left and right main fold lines 11a and 11b extend so as to gradually widen toward the end sides with a minimum distance between the lines at the bent portions. Further, as the fold lines along the width direction of the plate member 10, the horizontal fold line 114 positioned between the bent portions of the main fold lines 11a and 11b and the sub fold lines 111a and 111b reaching the rear end side 13 are mainly used. A horizontal fold line 115 is provided at a position branched from the fold lines 11a and 11b. Further, a leg support hole 101 for supporting a leg support provided near the center of the plate 10 and other members provided in the lateral direction of the leg support support hole 101 are inserted into the plate 10. In order to fix the seat to the seat receiver 1 in the vicinity of the member insertion hole 102, the member fixing hole 103 provided for fixing the spring force transmitting member described later in the vicinity of the rear end side 13, and the side end sides 14a and 14b. The provided screw insertion hole 104 is provided.
[0018]
In order to fold and raise the seat support 1 from the plate member 10, the main fold lines 11a and 11b and the horizontal fold lines 114 and 115 are valley-folded, and the sub-fold lines 111a, 111b, 112a and 112b are mountain-folded. Thus, a trapezoidal portion surrounded by the main fold lines 11a and 11b and the horizontal fold lines 114 and 115 is used as the bottom wall 15, and the horizontal fold line 114 and the sub fold lines 112a and 112b are located at the front adjacent positions of the bottom wall 15. A trapezoidal portion surrounded by the front end side 12 is a front inclined wall 16 that is a front-rear wall, and is a trapezoid that is located at the rear adjacent position of the bottom wall 15 and is composed of a lateral fold line 115, a rear end side 13, and subfold lines 111a and 111b. The portion is a rear inclined wall 17 that is a front-rear direction wall. Along with this, portions located outside the main fold lines 11a and 11b stand up. Then, by folding the second main fold lines 113a and 113b in a mountain, the two left and right surfaces outside the second main fold lines 113a and 113b are formed as outer pieces 18a and 18b for supporting the seat, Two standing surfaces inside the folding lines 113a and 113b are side walls 19a and 19b. The sub-fold lines 111a, 111b, 112a, and 112b are set in this way because when the side walls 19a and 19b are erected, the left and right main fold lines 11a and 11b have a substantially constant line-to-line distance at each part in the front-rear direction. The compression of the portion surrounded by the fold lines 11a, 11b, 114 and the front end side 12 and the portion surrounded by the fold lines 11a, 11b, 115 and the rear end side 13 is performed as a sub-fold line. This is because 111a, 111b, 112a, and 112b become mountain folds to escape. As a result, this part is three-dimensionalized, and the front inclined wall 16 and the rear inclined wall 17 are formed.
[0019]
The seat receiver 1 of the present embodiment configured as described above has a shape in which a front inclined wall 16, a rear inclined wall 17, and two side walls 19a and 19b rise from a bottom wall 15. When the seat receiver 1 is attached to the seat 3 (see FIG. 3), the outer pieces 18a and 18b, the front end side 12 of the front inclined wall 16, and the rear end side 13 of the rear inclined wall 17 are in contact with the seat 3, Another mechanism member can be incorporated in the space of the inverted quadrangular pyramid formed between the seat receivers 1. Each of the walls 15, 16, 17, 19a, 19b surrounding the space has a structure that maintains a necessary and sufficient strength by distributing and supporting a load applied to the seat 3 and a backrest (not shown).
[0020]
Here, the angle at which the front inclined wall 16 and the rear inclined wall 17 rise from the bottom wall 15 is the degree of bending of the main fold lines 11a and 11b when the plate member 10 is bent (that is, the bending point existing in the middle in the front-rear direction). The angle between the portion extending toward the front end side 12 and the portion extending toward the rear end side 13 can be adjusted. Further, the second main fold lines 113a and 113b, which are the upper edges of the side walls 19a and 19b, are opened in a C shape in the unfolded state of FIG. 1, and the opening angle is inclined with respect to the bottom wall 15 of the outer pieces 18a and 18b. Is to give. Therefore, it is possible to perform adjustment for matching the inclination of the outer pieces 18a and 18b with the inclination of the seat 3 by this opening angle.
[0021]
Next, a chair according to this embodiment using the seat receiver 1 will be described.
[0022]
As shown in FIG. 3, the chair according to the present embodiment includes a leg 4, the seat receiver 1 attached to the upper end side of the leg 4, and a back support rod 20 having a base end supported by the seat receiver 1. Therefore, the seat 3 described above is attached to the seat receiver 1 and a spine (not shown) is attached to the back support rod 2. The leg 4 has a structure in which a leg column 40 is raised from the center of five leg blades (not shown). The leg column 40 can be raised and lowered and incorporates a gas spring mechanism (not shown) inside.
[0023]
3 to 5 show the structure in the vicinity of the seat receiver 1. The seat support 1 includes a back support rod cover 21 that supports the vicinity of the proximal end of the back support rod 20, a spring portion 28 that generates a reaction force applied to the back support rod 20, and an upper end that is inclined rearward of the seat support 1. A reaction force mechanism is provided which is fixed to a predetermined portion of the wall 17 and includes a spring force transmission member 29 which penetrates the back support rod 20 and the spring portion 28 and positions the lower end thereof at the lower end of the spring portion 28. (FIG. 3 (A)).
[0024]
As shown in FIGS. 4 and 5, the back support rod cover 21 is configured by bending a single plate member 210 as in the case of the seat receiver 1. Two folding lines 214 a and 214 b extending from the front end side 212 to the rear end side 213 of the plate member 210 are provided in the front-rear direction of the plate member 210 in a substantially symmetrical manner. In order to make the plate member 210 into the shape of the back support rod cover 21, the two folding lines 214a and 214b are bent at substantially right angles. By doing so, it is configured as a substantially U-shaped member having a bottom surface 24 located at the bottom and two side surfaces 25a and 25b rising from the two folding lines 214a and 214b. The upper edges 25c, 25d of the two side surfaces 25a, 25b of the back support cover 21 are bent at the same angle as the angle formed by the bottom wall 15 and the rear inclined wall 17 of the seat support 1, The upper edges 25c and 25d of the side surfaces 25a and 25b are installed by joining the bottom wall 15 and the rear inclined wall 17 of the seat receiver 1 by welding or the like from below. A leg strut insertion hole 211 for allowing the leg strut 40 to be inserted is provided at a position directly below the leg strut support hole 101 provided in the seat receiver 1 when the back support rod cover 21 is joined to the seat receiver 1. It has been. The leg strut insertion hole 211 is used to rotatably support the seat support 1 and the back support rod cover 21 on the leg strut 40 in a state where the leg strut 40 is inserted together with the leg strut insertion hole 101. In addition, member insertion holes 26a and 26b for inserting a back support rod stopper 27, which will be described later, are provided at predetermined positions on the two side surfaces 25a and 25b, respectively.
[0025]
As shown in FIG. 5, the back support rod 20 is provided with a rotation shaft hole 20a in the vicinity of the base end portion, and the rotation shaft hole 20a is formed of a rod along with the member insertion holes 26a and 26b of the back support rod cover 21. By inserting the back support rod stopper 27, the back support rod 20 is rotatably supported in a space formed between the back support cover 21 and the seat support 1, and the back support rod 20 serves as a so-called backrest tilt mechanism. Is allowed to tilt.
[0026]
The spring portion 28 includes a spring SP such as a coil spring and retainers R1 and R2 positioned at both upper and lower ends in the compression direction of the spring SP. The upper surface of the upper retainer R1 is in contact with the back support rod 20, The lower retainer R2 is supported by a spring force transmission member 29 described below.
[0027]
The spring force transmission member 29 is fixed to the rear inclined wall 17 so as not to move up and down and to be unrotatable at the position where the upper end portion passes the member support hole 103 of the rear inclined wall 17, and the lower end side to the rear inclined wall 17. The upper retainer R1, the spring SP, and the lower retainer R2 are inserted from the lower end side of the nut member 29a (reaction force adjusting grip) at the lower end. The lower retainer R2 is supported by the nut member 29a. Then, the load of the back support rod 20 is received by the upper retainer R1, thereby compressing the spring SP and causing the reaction force to act on the back support rod 20.
[0028]
Next, the operation when the back support rod 20 tilts backward will be described. When the back support rod 20 does not perform the backward tilting operation, the back support rod 20 is supported by the spring portion 28 from below and the upper surface 20b is in contact with the rear inclined wall 17 of the seat receiver 1 as shown in FIG. Is maintained in an upright state, and the reaction force of the spring SP acts on the back support rod 20 while compressing the spring SP via the spring force transmission member 29 as the back support rod 20 tilts backward. It has become. An enlarged view of the vicinity of the seat support 1 with the back support rod 20 tilted backward is shown in FIG. When the back support rod 20 tilts backward with the back support rod stopper 27 as a fulcrum, the lower surface 20c of the back support rod 20 contacts the bottom surface 24 of the back support rod cover 21, as shown in FIG. The tilting range of 20 is limited, and a stable backward tilting posture is obtained.
[0029]
As described above, the chair according to the present embodiment serves as a stopper in which the rear inclined wall 17 of the seat 1 maintains the back support rod 20 in an upright state in the state where the acting force that causes the back support rod 20 to tilt backward is not working. Plays. Further, when the back support rod 20 is tilted backward, the bottom surface 24 of the back support rod cover 21 contacts the back support rod 20, so that the bottom surface 24 serves as a stopper for maintaining the back support rod 20 in the tilted state. .
[0030]
As described above, the seat receiver 1 of the present embodiment includes the bottom wall 15 supported by the leg support 40, the side walls 19 a and 19 b rising from the opposite two side edges of the bottom wall 15, and the front edge of the bottom wall 15. And it is a box-shaped thing which comprises the inclined walls 16 and 17 which are the front-back direction walls which stand up from a rear edge, and are connected to the side walls 19a and 19b corresponding to the opposite two side edges, respectively. It is configured by bending. And the surplus part of the board | plate material 10 produced between the site | part used as the side walls 19a and 19b and the site | part used as the inclined walls 16 and 17 (the part enclosed by the fold lines 11a, 112a, 114 and the front end side 12 in the figure, the fold line 11b) 112b, 114 and the portion surrounded by the front end side 12, the portion surrounded by the fold lines 11a, 111a and the rear end side 13, and the portion surrounded by the fold lines 11b, 111b and the rear end side 13). The side walls 19a and 19b and the inclined walls 16 and 17 are erected at predetermined positions while escaping into the internal space 1.
[0031]
For this reason, the seat receiver 1 can be easily comprised from the board | plate material 10 of 1 sheet, While being able to minimize the number of parts, the cost concerning a metal mold | die can also be held down. Further, compared to welding, a plurality of parts are not joined, so that the strength of the seat receiver 1 can be improved, and the man-hours can be reduced by omitting the trouble of joining the parts. Furthermore, since it is constructed by bending a single plate material, it is technically simple compared to, for example, drawing, the thickness of the finished product can be made uniform, and the production equipment can be simply bent. Because it is good, it can be inexpensive.
[0032]
In particular, since the seat 3 is supported by the upper edges of the side walls 19a and 19b and the inclined walls 16 and 17, the chair 3 is configured. Therefore, even in such a folding structure, the upper load applied to the seat 3 is applied to the walls 19a and 19b. , 16, and 17 can be appropriately supported.
[0033]
Specifically, the seat receiver 1 of the present embodiment includes a bottom wall 15 supported by the leg support 40, side walls 19 a and 19 b rising from opposite two side edges of the bottom wall 15, and a front edge of the bottom wall 15. A front inclined wall 16 and a rear inclined wall 17 which rise from the rear edge and are connected to the corresponding side walls 19a and 19b, respectively, and support the seat 3 on the upper edge side of the side walls 19a and 19b. At the same time, the mechanical components of the reaction force mechanism such as the spring force transmitting member 29 are attached to the rear inclined wall 17. The seat receiver 1 is formed by bending a single plate material 10, and the two main fold lines 11 a and 11 b reaching from the front end side 12 to the rear end side 13 of the plate material 10 at the time of bending are substantially symmetrical. The two main fold lines 11a and 11b are partially folded into valleys to form opposite two side edges of the bottom wall 15, and between the corresponding two side edges of the opposite two side edges. Sub-fold lines 111a, 111b, 112a branching inwardly from the main fold lines 11a, 11b toward the end sides 12, 13 from the predetermined location by providing a fold line as a front edge or a rear edge of the bottom wall 15. 112b is provided, and the remaining regions of the main fold lines 11a and 11b are valley-folded while the sub-fold lines 111a, 111b, 112a, and 112b are folded in a mountain, so that the sub-fold lines 111a, 111b, 12a and 112b are inclined upwardly toward the end sides 12 and 13 of the plate member 10, and are surrounded by the sub-fold lines 111a, 111b, 112a and 112b, the horizontal fold lines 114 and 115, and the end sides 12 and 13. The surface of the plate member 10 is configured to be the front inclined wall 16 and the rear inclined wall 17. For this reason, it becomes possible to effectively configure these inclined walls 16 and 17 that are the attachment destinations of various mechanical components by using the bending of the plate material 10.
[0034]
Further, the seat receiver 1 according to the present embodiment is provided with outer pieces 18a, 18b on the outer sides of the two main fold lines 11a, 11b via second main fold lines 113a, 113b, respectively. By forming the lines 113a and 113b into a mountain fold, outer pieces 18a and 18b are arranged at positions continuous with the upper edges of the side walls 19a and 19b, and the seat 3 is supported by the outer pieces 18a and 18b. Therefore, since the seat receiver 1 supports the seat 3 with a surface, not only joining by welding using the surface but also fixing with a screw or the like is possible, and the seat 3 is supported simply and reliably. Will be able to.
[0035]
Further, the seat receiver 1 according to the present embodiment is set so that the upper edges of the side walls 19a, 19b are inclined with respect to the bottom wall 15, so that the upper edges of the side walls 19a, 19b are By appropriately setting the angle, the angle at which the seat receiver 1 supports the seat 3 can be easily adjusted, and a support state matched to the inclination of the seat 3 can be easily obtained. The degree of freedom in design can be effectively increased.
[0036]
Furthermore, the chair according to the present embodiment is configured by using the seat receiver 1, and further, a back support rod 20 that supports the back in the vicinity of one end portion, and a back portion of the back support rod 20 by a spring portion 28. A spring force transmission member 29 for transmitting force is provided, and a reaction force by the spring portion 28 is applied to the back support rod 20 while compressing the spring via the spring force transmission member 29 in accordance with the backward tilting operation of the back support rod 20. The chair is made to act, and by attaching one end of the spring force transmission member 29 substantially vertically to a predetermined portion of the rear inclined wall 17 of the seat receiver 1, the attachment angle of the spring portion 28 is inclined outward. It is a thing.
[0037]
In such a case, the mounting angle of the spring portion 28 is directed outward, and the other end of the spring force transmitting member 29 is provided at a position away from other members installed in the vicinity of the seat support 1 such as the leg support 40. Therefore, positional interference with other members installed in the vicinity of the seat receiver 1 can be prevented.
[0038]
The specific configuration of each part is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
[0039]
For example, in the above embodiment, the spring force transmission member 29 constituting the reaction force mechanism is attached to the rear inclined wall 17, but the same effect can be obtained by attaching various mechanical components using the front inclined wall 16. Played. For example, in a chair in which a reaction force mechanism is incorporated in the inner space of the seat receiver 1, a grip for adjusting the reaction force may be attached to this part, but the grip of this part is inclined. It is easy to operate. And according to this embodiment, such a front inclined wall 16 will also be provided easily.
[0040]
Further, the front-rear direction wall may not be inclined, and the same effect can be obtained even if the surplus portion escapes to the outer space of the seat receiver.
[0041]
Further, the number and position of the folding lines are not limited to the above-described embodiment.
[0042]
In addition, in the said embodiment, although each fold line is made into the shape of a straight line or a polygonal line, when the board | plate material 10 is comprised with metal plates, such as an iron plate, even if it uses a slightly curved fold line, for example, on the characteristic of material. Since it can be bent, even if such a folding line is adopted, it does not depart from the spirit of the present invention.
[0043]
【The invention's effect】
According to the present invention described in detail above, a box-shaped seat receiver can be effectively manufactured from a single plate material by a simple method, and a chair provided with various mechanical components can be simplified using this. It can be created at low cost.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is a perspective view of the same embodiment.
FIG. 3 is an essential part cross-sectional view of the same embodiment;
FIG. 4 is a plan view and a perspective view of the embodiment.
FIG. 5 is a perspective view of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Seat receiver 10, 210 ... Plate material 11a, 11b ... Main fold line 111a, 111b, 112a, 112b ... Sub fold line 113a, 113b ... 2nd main fold line 114, 115 ... Horizontal fold line 12, 212 ... Front edge 13 213 ... rear end 15 ... bottom wall 16 ... front inclined wall 17 ... rear inclined walls 18a and 18b ... outer pieces 19a and 19b ... side walls 2 ... back 20 ... dorsal support rod 21 ... dorsal support rod covers 214a and 214b ... 2 Folding line 24 ... bottom 25a, 25b ... two side surfaces 27 ... back support clamp 28 ... spring portion 29 ... spring force transmitting member 3 ... seat 4 ... leg 40 ... leg post

Claims (6)

A bottom wall supported by the leg strut, a side wall rising from the opposite two side edges of the bottom wall, and a side wall rising from at least one of the front edge or the rear edge of the bottom wall and the opposite two side edges corresponding to the corresponding side walls, respectively A box-shaped seat with a front and rear wall connected thereto,
The seat receiver is formed by bending a single plate material, and an excess portion of the plate material generated between a portion serving as a side wall and a portion serving as a front-rear direction wall is formed in an internal space or an external space of the seat receiver. A seat receiver, wherein the side wall and the front-rear direction wall are erected at predetermined positions while being escaped. 2. A chair comprising the seat support according to claim 1, wherein the seat is supported by upper edges of the side wall and the front-rear wall. A bottom wall supported by the leg strut, a side wall rising from the opposite two side edges of the bottom wall, and a side wall rising from at least one of the front edge or the rear edge of the bottom wall and the opposite two side edges corresponding to the corresponding side walls, respectively An inclined wall to be connected, supporting the seat on the upper edge side of the side wall, and attaching a mechanical component to the inclined wall,
The seat receiver is constructed by bending a single plate material, and two main fold lines reaching from the front end side to the rear end side of the plate material are set at the left and right substantially symmetrical positions during the bending. A part of the main fold line is defined as a valley fold to form opposite two side edges of the bottom wall, and a horizontal fold line connecting between corresponding predetermined portions of the two opposite side edges is set. The two sub-fold lines branching inward from the main fold line toward the end side from the predetermined location are set as the front edge or the rear edge of the bottom wall by folding along By folding the remaining area of the main fold line while folding, the sub fold line is inclined upward as it goes to the end side of the plate, and is surrounded by the sub fold line, the horizontal fold line and the end side. The seat plate is configured such that the surface of the plate material is the inclined wall. . An outer piece is provided on the outer side of the two main fold lines via the second main fold line, and the second main fold line is mountain-folded so that the outer piece is placed at a position continuous with the upper edge of the side wall. 4. A seat receiver according to claim 3, wherein the seat is arranged and supported by the outer piece. The seat support according to claim 3 or 4, wherein the upper edge of the side wall is set to form an inclined angle with respect to the bottom wall. A back support rod configured to use the seat support according to claim 3 and supporting a back in the vicinity of one end portion, and a spring force transmission member transmitting a reaction force by a spring to the back support rod. And a chair that causes the reaction force of the spring to act on the back support rod while compressing the spring via a spring force transmission member in accordance with the backward tilting operation of the back support rod,
A chair characterized in that a spring mounting angle is inclined outwardly by applying one end of a spring force transmission member, which is a mechanical component, to a predetermined portion of an inclined wall of the seat receiver substantially vertically.

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