Vertical chair

Abstract

The invention discloses a vertical chair comprising a bracket consisting of front upright posts 1, rear upright posts 2 and horizontal rods 3 for connecting the front upright posts 1 and the rear upright posts 2, wherein a chair panel 4 for supporting a human body is arranged on the front upright posts 1 and the rear upright posts 2 of the bracket; a transverse back plate 5 is arranged between therear upright posts 2; particularly, a concave part 6 which is opened forwards is arranged on the upper surface of the chair panel 4; the rear edge line a1a2 of the concave part 6 conforms to a parabolic equation; an a1 point and an a2 point are provided with forward extension lines a1a and a2a3; the front surface of the back plate 5 is provided with a back concave part 7 which is opened upwards,the edge curve of the back concave part 7 conforms to an elliptic equation, the surface of the concave part 6 comprises an inclined surface 8 and a curved surface 9 which are combined, the symmetric center point of an intersection line 10 of the inclined surface 8 and the curved surface 9 is the lowest point c of the concave part 6, and the height difference between the lowest point c and the chair panel 4 is 3-8 mm. The vertical chair is more suitable for human body sitting and more accords with ergonomics.

Description

technical field [0001] The invention relates to a commonly used furniture, in particular to a commonly used upright chair. Background technique [0002] Upright chairs are the most commonly used furniture for homes or offices. There are many forms of materials, such as wood, or plastic, or steel-plastic and steel-wood materials, but the most basic structural form is the same. That is, the support body is composed of front and rear columns supporting the weight of the human body and cross bars connecting the front and rear columns. The support body is provided with a horizontal chair panel supporting the human body, and the rear column is provided with a backboard for the human body to rely on. The upright chair has realized the basic function of the human body sitting and leaning on, but after using the above-mentioned upright chair for a long time, some parts of the human body will cause the muscles of the human body to be in a long-term tense state due to the problem of si...

AI Technical Summary

Problems solved by technology

[0002] Upright chairs are the most commonly used furniture for homes or offices. There are many forms of materials, such as wood, or plastic, or steel-plastic and steel-wood materials, but the most basic structural form is the same. That is, the support body is composed of front and rear columns supporting the weight of the human body and cross bars connecting the front and rear columns. The support body is provided with a horizontal chair panel supporting the human body, and the rear column is provided with a backboard for the human body to rely on. The upright chair has realized the basic function of the human body sitting and leaning on, but after using the above-mentioned upright chair for a long time, some parts of the human body will cause the muscles of the human body to be in a long-term tense state due to the problem of sitting posture, or the stressed state of the human body is not enough. Reasonable, leading to fatigue or partial body damage

In order to solve the above-mentioned problems, some improvements have been made in the design of the existing standing chairs. For example, a horizontal or horizontal soft convex portion is provided on the top of the above-mentioned backrest board, and the convex portion can be supported on the user’s body. Neck, when the user is in a rest state, the convex part can support the user's head, or the above-mentioned chair panel is provided with a cushion layer made of soft material, or the above-mentioned back board is designed as a curved shape to adapt to The horizontal shape of the back of the human body, the above-mentioned various improvements have only solved local problems to a certain extent, but have not solved the real problem

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