JP5597792B2 - Chair - Google Patents

Description

  The present invention relates to a chair, and more particularly, to a chair in which a seat can move back and forth and can be easily seated and stood up.

  A conventional chair has a seat mounted on the leg and a backrest provided at the rear of the seat, and the seat and the backrest move in the height direction but are fixed in the front-rear direction. Many of them have a typical structure. There are also chairs configured such that both the seat portion and the backrest tilt backward (see, for example, Patent Literature 1), or chairs with a structure in which the seat portion slides back and forth (see, for example, Patent Literature 2).

JP 2006-218047 A JP-A-10-57174

  The conventional chair described in Patent Document 1 in which both the seat portion and the backrest tilt backward is a structure in which the back muscles can be easily extended, but is not suitable for reclining. In addition, the chair described in Patent Document 2 in which the seat slides back and forth is not suitable for reclining because it is not interlocked with the backrest, and both the seat, the backrest, and the slide structure are extremely complicated. There was a problem.

  The present invention has been made to solve such a problem, and provides a chair that can be easily changed into a reclining state and a rising state, and that a seat portion, a backrest, and a slide structure can be easily manufactured at low cost. Objective.

In order to solve the above-described problems, the chair of the present invention includes a pair of body frames that are erected on both the left and right sides, a pair of backrest frames that are pivotally supported on the rear portions of the pair of body frames, and the pair of body frames. A seat frame that is loosely fitted in a hole at the lower end of each back frame and connected so as to swing back and forth with the hole as a fulcrum, and stretched from the back frame to the seat frame. And a seat member that constitutes the seat, and a seat support frame that is provided at the front portion of the main body frame and supports the back surface of the seat so as to be slidable, and the seat frame is the pair of backrest frames It comprises a pair of projecting parts projecting forward from each of the above and a connecting part that couples the pair of projecting parts.

  It is preferable that the seat frame of the chair of the present invention is configured such that the connecting portion connects the rear ends of the pair of projecting portions.

  In the chair according to the present invention, it is desirable that the seat portion is configured such that a seat plate including a rigid plate member and an elastic sheet member superimposed on an upper surface of the rigid plate member is accommodated in the seat member.

  The seat member of the chair of the present invention has upper cylindrical portions formed on the upper left and right sides of the belt-shaped seat body, lower cylindrical portions are formed on the lower left and right sides of the seat body, and the upper cylindrical portion is inserted into the back frame, It is desirable that the lower cylinder portion is stretched by being inserted into the seat frame.

  The chair of the present invention may be provided with an upper frame that also serves as an armrest on the upper part of the main body frame in the front-rear direction.

  According to the present invention, the seat portion and the backrest can be easily changed to the reclining state and the standing state, the configuration of the seat portion and the backrest, and the seat portion slide and the backrest tilting structure are simple and can be manufactured at low cost. .

It is a front perspective view of this invention chair. It is a disassembled front perspective view. It is a side view of FIG. It is the sectional view on the AA line of FIG. It is a side view of a use state It is a rear perspective view.

Hereinafter, embodiments of a chair according to the present invention will be described with reference to the drawings.
1 is a front perspective view of the chair of the present invention, FIG. 2 is an exploded front perspective view, and FIG. 6 is a rear perspective view. In the embodiment, an example of a chair made entirely of wood will be described.

  As shown in FIGS. 1 and 2, body frames 1 and 1 are erected on the left and right. The left and right main body frames 1 and 1 have front and rear vertical frames 1a and 1b, respectively, and the lower portions of the vertical frames 1a and 1b are leg portions 2. The lower ends of the leg portions 2 are connected by a pedestal frame 3, and a reinforced frame 4 is connected to the pedestal frame 3. Upper frames 5 and 5 that also serve as armrests are connected to the upper ends of the front and rear vertical frames 1a and 1b in the front-rear direction. A rear frame 6 is connected to the rear portions of the upper frames 5 and 5. A seat support frame 7 is connected between the front vertical frames 1a and 1a.

A plate-like backrest frame 10 is swingably supported on the rear portions of the left and right upper frames 5 and 5 via a support shaft 8. For example, a seat frame 11 formed of a round bar is swingably attached to the lower end of the back frame 10. As shown in FIGS. 2 and 6, the seat frame 11 is a substantially U-shaped member in plan view, and the left and right projecting portions 11 a and 11 c are connected to the rear ends of the projecting portions 11 a and 11 c. It is composed of The rear portion of the projecting portions 11a and 11b of the main body frame 11 is loosely fitted in the hole 12 at the lower end of the backrest frame 10, so that the seat frame 11 can swing around the hole 12 as a fulcrum. In addition, the connection structure of the backrest frame 10 and the seat frame 11 is not limited to this, and the protruding portions 11a and 11c are locked with pins or the like before and after the back frame 10 so that the seat frame 11 does not come off. Also good. Moreover, although the connection part 11b connects the rear ends of protrusion part 11a, 11c, the seat part frame 11 of this embodiment is good also as a structure which connects front ends. Further, the front and rear ends may be connected to each other.

  Reference numeral 14 denotes a seat member constituting the backrest S and the seat portion Z. The upper cylindrical portion 14b is formed on the upper and left sides of the belt-shaped seat body 14a, and the lower cylindrical portion 14c is formed on the lower left and right sides. The seat body 14 is stretched by inserting the upper cylinder portion 14 into the back frame 10 from above and the lower cylinder portion 14c into the seat frame 11 from the front. Thereby, the backrest S is formed between the backrest frames 10, and the seat portion Z is formed between the projecting portions 11 a and 11 c of the seat portion frame 11.

  As shown in FIG. 4, a seat plate 17 in which an elastic sheet member 17 b such as urethane rubber is superimposed on an upper surface of a rigid plate member 17 a such as a plywood plate is formed on a portion constituting the seat portion Z of the seat member 14. 14 is enclosed. The seat frame 11 and the seat Z are slid back and forth while being placed on the seat support frame 7.

  FIG. 5 shows a state where a person 18 is sitting on a chair. As shown in FIG. 5 (a), the upper body is placed on the backrest portion S, and the backrest frame 10 swings clockwise about the support shaft 8, whereby the seat portion Z slides forward, and the upper frame 5 You can use it as a reclining chair if you put your elbow on it. And when standing up from the chair, if the seat part Z is pushed backward with the back of the knee, as shown in FIG. 5 (b), the seat part Z slides backward, and the seat part does not get in the way. The backrest S swings counterclockwise and pushes the back, so that it can stand up easily.

  As described above, in the chair of the present invention, the back-and-forth movement of the seat portion Z and the tilt of the backrest S are interlocked. The part Z can be retracted rearward and can stand up easily. As described above, the seating, the reclining posture, and the standing up can be comfortably performed, so that it can be used for relaxing, dining, and other various purposes. Further, since the seat portion Z and the backrest S are constituted by the seat member 14 stretched on the backrest frame 10 and the projecting portions 11a and 11b of the seat portion frame 11, the configuration of the seat portion Z and the backrest S is simple and the number of parts is also increased. Less. Furthermore, when a person sits on the chair of the present invention, the load applied to the seat Z applies a force in the direction in which the protrusions 11a and 11b are brought close to the seat frame 11, but the protrusions 11a and 11c Since it is connected by the connection part 11b and the position in the left-right direction is fixed, it is possible to prevent the seat frame 11 and the seat surface Z from falling off the seat support frame 7.

  In addition, although the chair of the embodiment is an example in which the entire frame is wooden, it can also be configured with a metal frame or a metal pipe. Campus cloth is suitable for the sheet member 14, but the material is not limited as long as it has strength, such as a cloth product or leather product with high strength. Other specific configurations are not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Main body frame 7 Seat support frame 10 Back frame 11 Seat frame 11a, 11c Projection part 11b Connection part 14 Seat member 14a Seat main body 14b Upper cylinder part 14c Lower cylinder part 17 Seat plate 17a Rigid board member 17b Elastic seat member S Backrest Part Z Seat

Claims (5)

A pair of body frames erected on both the left and right sides;
A pair of backrest frames pivotally supported at the rear of each of the pair of body frames;
A seat frame that is loosely fitted to a hole at a lower end of each of the pair of backrest frames and is connected so as to swing back and forth with the hole as a fulcrum ;
A seat member stretched from the back frame to the seat frame, and constituting the back and the seat;
A seat support frame provided at the front of the main body frame and slidably supporting the back surface of the seat;
The seat frame includes a pair of projecting portions projecting forward from each of the pair of backrest frames, and a connecting portion that couples the pair of projecting portions.   The chair according to claim 1, wherein the connecting portion connects the rear ends of the pair of projecting portions to the seat frame.   2. The seat portion is configured such that a seat plate including a rigid plate member and an elastic sheet member superimposed on an upper surface of the rigid plate member is accommodated in the seat member. Or the chair in any one of 2.   The seat member has upper cylindrical portions formed on the upper left and right sides of the belt-shaped seat main body, lower cylindrical portions are formed on the lower left and right sides of the seat main body, the upper cylindrical portion is inserted into the back frame, and the lower cylindrical portion is formed. The chair according to any one of claims 1 to 3, wherein the chair is stretched by being inserted into the seat frame.   The chair according to any one of claims 1 to 4, wherein an upper frame that also serves as an armrest is provided on an upper portion of the main body frame in a front-rear direction.

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