JP3108278U - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new chair capable of performing office work and rest at any time.
In a chair including a seat portion, a backrest portion, and a leg portion, the ground contact point of the leg portion is two points (A and A points) of the main center of gravity of the chair and two points in front of the center of gravity (points A and A). (B, B point) and 2 points (C, C point) rearward from the center of gravity. The above points A, A are below the line connecting B, B and C, C points. A chair characterized by being located.
[Selection] Figure 1

Description

  The present invention relates to a chair, and more particularly, to a novel chair capable of performing office work and resting at any time.

  Conventionally, various chairs have been devised. The chairs are roughly classified into so-called chairs suitable for office work and chairs suitable for rest. In the case of an office chair, various structural measures are taken so that a correct posture can be taken toward the desk and there is no burden on the body. Similarly, various ideas have been made for the resting chair.

  Of course, even if it is an office chair, the backrest has been devised so that it can be rested in a comfortable posture between office work, so that the backrest is tilted backwards somewhat, while the chair for rest is not usable for office work None, but in any case, one of the main purposes is configured, and there is no known chair that has both office and rest. The main reason for this is that when resting on an office chair, it is common to tilt the backrest backwards and warp the posture, but at that time both feet are on the floor and the posture is unnatural. by. As a method for solving such problems, it is often the case that both feet are placed on a desk or sitting on another chair while sitting on the chair. It may be impossible to use space because of the use of.

  Accordingly, an object of the present invention is to provide a novel chair that can solve the above-described problems and can perform office work and rest at any time by one unit.

The above object is achieved by the present invention described below.
1. In a chair including a seat, a backrest, and a leg, the ground contact point of the leg is two points (A and A points) of the main center of gravity of the chair and two points (B and B points in front of the center of gravity) ) And 2 points (C and C points) behind the center of gravity, the points A and A are located below the line connecting the points B and B and the points C and C. A chair characterized by that.
2. 2. The chair according to 1 above, wherein an angle α between a line connecting the points A, A and C, C and a horizontal plane is 3 to 20 ° in a state where the points A, A and B, B are in contact with the ground.
3. The chair according to 1 above, wherein a footrest on which both feet of the seated person are placed is provided above the points B and B.
4). 2. The chair according to 1 above, wherein the seat has a saddle shape.
5. 2. The chair according to 1 above, wherein armrests are integrally provided on both sides of the backrest.

  ADVANTAGE OF THE INVENTION According to this invention, the novel chair which can perform office work and a rest at any time with one chair can be provided.

  The present invention will now be described in more detail with reference to the best mode of embodiment shown in the accompanying drawings. FIG. 1 is a perspective view showing the entire chair of the present invention. The chair of the present invention is a chair including a seat 1, a backrest 2, and a leg 3, as shown in the figure. 2 points (A and A points) of the majority of the person's center of gravity), 2 points ahead of the center of gravity (B and B points), and 2 points behind the center of gravity (C and C) 2), and the points A and A are located below the lines (not shown) connecting the points B and B and the points C and C as shown in FIG. ing.

  In the chair of the present invention, as shown in FIG. 2a, points A and A (only one point is shown in the drawing, the same applies hereinafter) and points B and B are grounded to the floor. The angle α between the line connecting the points A and A and the points C and C and the horizontal plane (“horizontal plane” means the floor surface) is 3 to 20 °, and as shown in FIG. In the state where the points A, A and C, C are in contact with the floor, the angle β between the line connecting the points A, A and B, B and the horizontal plane is preferably 3 to 20 °. Further, it is preferable that a footrest 4 on which both feet x of the seated person X ride is provided, as shown in FIGS.

  FIG. 3A shows the state of the chair and the state of the seated person X of the chair when the leg 3 is in the state of FIG. As shown. That is, the seated person X facing the desk Y is in a normal working posture, and in this state, it is not substantially different from the case of a normal chair except that both feet x and x are held on the footrests 4 and 4. . By the way, when the office work is interrupted and resting, when the seated person X moves his / her weight to the backrest 2 side, the center of gravity of both the seated person X and the chair shifts to the backrest 2 side. In this state, as shown in FIG. 2b, the points B and B leave the floor together with both feet held on the footrests 4 and 4, and the points C and C act as a stopper to ground to the floor. , A and A points, and C and C points are grounded, so that the seated person is stably held. In this state, as shown in FIG. 3 b, the whole body of the seated person X including both feet x and x is stably held in the supine direction, and both elbows y are hooked on the armrests 5 provided on both sides of the backrest 2. Thus, the posture of the seated person X is stabilized.

  The above-described change in the state of the chair occurs when the chair is tilted at a predetermined angle back and forth around the points A and A. In a state where the chair is relatively inclined forward, that is, in a state where the seated person X is engaged in office work (a state where points A, A and B, B are grounded, FIG. 2a), A The angle α between the line connecting the points A and C and C and the horizontal plane is preferably 3 to 20 °. When the angle α is larger than 20 °, the posture of the worker who is resting at rest (FIG. 2b) becomes too large, and the posture does not match the work environment. On the other hand, when the angle α is smaller than 3 °, the operator's back-up state at rest is too shallow and is insufficient for rest.

  Further, in a state where the chair is relatively inclined backward, that is, a state where the seated person X is resting (a state where the points A, A and C, C are grounded, FIG. 2b), A, The angle β between the line connecting the points A, B and B and the horizontal plane is also preferably 3 to 20 ° for the same reason as described above.

  Although the principle of the present invention has been described above, other configurations may be the same as those of the chair of the prior art, but in a preferred embodiment, the armrest portions 5 are integrally provided on both sides of the backrest portion 2. preferable. By providing this armrest portion 5, as shown in FIG. 3b, the posture of the seated person X at the time of rest is stabilized, and more sufficient rest is possible. The seat 1 may be the same as a conventional chair, but the shape is preferably a saddle similar to a bicycle seat or a saddle for riding. By making the seat portion 1 into a saddle shape in this way, the posture of the worker at rest as shown in FIG. 3b is maintained in an easy posture with some legs open, and more sufficient rest is possible.

  Further, it is preferable to provide casters 7 at points A and A and points B and B, respectively, to facilitate the movement of the chair, but the installation of casters 7 is not essential. Further, it is not necessary to provide casters at points C and C, and it is preferable to attach a cushioning material 8 made of rubber or plastic to the grounding point to protect the floor surface made of wood or carpet.

Further, in the chair of the present invention, by providing a headrest 6 above the upper center of the backrest part 2, by maintaining the stability of the head when the seated person X is resting as shown in FIG. More rest is possible.
In addition, each member in the chair of the present invention can be connected by processing a steel pipe or the like in the same manner as a normal chair. In particular, the footrest 4 is preferably bent into a semicircle by bending the pipe material so that the position of the arch of both feet is in contact with the pipe material to stabilize the posture. Moreover, it is preferable to connect the seat part 1 and the leg part 3 via the member which can adjust the height of the seat part 1, The material of the above seat part 1, the backrest part 2, the headrest 6, etc. is also available. It may be the same as a conventional chair.

  ADVANTAGE OF THE INVENTION According to this invention, the novel chair which can perform office work and a rest at any time with one chair can be provided.

The perspective view explaining the whole chair of this invention. The perspective view explaining the effect | action of the chair of this invention. The perspective view explaining use of the chair of this invention.

Explanation of symbols

1: Seat part 2: Backrest part 3: Leg part 4: Footrest 5: Armrest part 6: Headrest 7: Caster 8: Cushioning material A, B, C: Grounding point X: Seated person x: Foot y: Elbow Y: Desk

Claims (5)

  In a chair including a seat, a backrest, and a leg, the ground contact point of the leg is two points (A and A points) of the main center of gravity of the chair and two points (B and B points in front of the center of gravity) ) And 2 points (C and C points) behind the center of gravity, the points A and A are located below the line connecting the points B and B and the points C and C. A chair characterized by that.   2. The chair according to claim 1, wherein an angle α between a line connecting the points A and A and the points C and C and a horizontal plane is 3 to 20 ° in a state where the points A and A and the points B and B are grounded. .   The chair according to claim 1, wherein a footrest on which both feet of a seated person are placed is provided above points B and B.   The chair according to claim 1, wherein the seat has a saddle shape.   The chair according to claim 1, wherein armrests are integrally provided on both sides of the backrest.

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