CN111938355B

CN111938355B - Round-backed armchair

Info

Publication number: CN111938355B
Application number: CN202010659198.XA
Authority: CN
Inventors: 麦兴鉴
Original assignee: Guangdong Yuemuju Customized Home Technology Co ltd
Current assignee: Guangdong Yuemuju Customized Home Technology Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2024-04-05
Anticipated expiration: 2040-07-09
Also published as: CN111938355A

Abstract

A round-backed armchair is composed of a supporter consisting of front and back posts and horizontal rods connected to said posts, a horizontal chair panel on said supporter, semi-enclosed ring-shaped supporter on top of front and back posts, and a concave part consisting of front and back inclined surfaces and smooth curved surfaces, and a height difference between said lowest point and surface of chair panel being 3-8 mm and consisting of a ₁ Point and a ₂ The points extend forward to the point a and the point a respectively ₃ A dot; the loop-shaped support comprises a back rest portion bb with a curved back portion ₁ And from point b and b ₁ The points are respectively forward extending armrest parts, wherein the included angle between the front surface of the backrest part and the horizontal plane is 107-109 degrees. The sitting posture correcting device has the advantages that the sitting posture correcting device ensures basic sitting posture correcting, and meanwhile, each part of the body is stressed reasonably, so that the comfort level of a user is greatly improved.

Description

Round-backed armchair

Technical Field

The invention relates to furniture, in particular to a round-backed armchair with high ergonomics.

Background

The round-backed armchair is a kind of furniture which is usually used and has traditional design requirement, and uses hard wood as main preparation material, its basic structure is that the support is formed by combining front and rear upright posts and horizontal bar, the proper position of the support is equipped with horizontal chair panel, the top ends of front and rear upright posts are equipped with semi-closed supporting piece, the rear portion of said supporting piece is mainly used for supporting back of human body, and the forward extending portions of two sides are mainly used for supporting arms. The conventional designed round-backed armchair mainly inherits the standard of the clear age, has the factors of certain traditional culture and requires the user to have correct sitting posture, the design does not consider the comfort problem of the user, the user can feel quite uncomfortable when the use time is slightly long, if the sitting posture is slightly out of position, the phenomenon of muscular soreness can occur at the local part of the body of the user, and the conventional design is not completely suitable for the requirements of people in modern society on furniture or round-backed chairs. Therefore, it is still a problem to design a new designed round-backed armchair suitable for modern people to living requirements while maintaining the design requirements and inheriting cultural connotations in the clear age.

Disclosure of Invention

The invention aims to disclose a round-backed armchair which has the elements of the traditional system and has excellent comfort level.

The technical scheme for realizing the invention is as follows: the chair comprises a bracket consisting of a front upright post, a rear upright post and a horizontal rod connected with the front upright post and the rear upright post, wherein the bracket is provided with a horizontal chair panel, the top ends of the front upright post and the rear upright post are provided with semi-closed ring-shaped supporting parts, the key is that the surface of the chair panel is provided with a concave part, the surface of the concave part is formed by smooth transition of a front inclined plane and a rear curved plane, the final end point of the boundary line of the inclined plane and the curved plane is the lowest point c of the concave part, the height difference between the lowest point c and the surface of the chair panel is 3-8 mm, and the rear part a of the boundary line of the concave part and the surface of the chair panel ₁ a ₂ Conform to the parabolic equation and are defined by a ₁ Point and a ₂ The points extend forward to the point a and the point a respectively ₃ A dot; the loop-shaped support comprises a back rest portion bb with a curved back portion ₁ And from point b and b ₁ The points are respectively forward extending armrest parts, wherein the included angle between the front surface of the backrest part and the horizontal plane is 107-109 degrees.

The center line dd of the inner surface of the backrest part ₁ The distance between the intersection point D of the lower end point D of the chair panel and the final point E of the central line of the concave part is 50-70 mm, and the distance between the lower end point D and the intersection point D is 250-300 mm.

The included angle between the inclined plane of the concave part and the horizontal plane is 9-13 degrees, and the curvature radius R of the curved surface is 40-50 mm.

The armrest part is composed of a gradually lowering section and a horizontal section, the height difference between the highest point of the gradually lowering section and the horizontal section is 30-50 mm, and the height difference between the horizontal section at the front end and the plane of the chair panel is 195-215 mm.

The technical scheme disclosed by the invention is obtained through a large number of tests, comparison, measurement and analysis, particularly, the stress sensors are arranged at all parts of a human body, a large amount of data is obtained through a plurality of sitting postures, and the technical scheme is obtained through analysis and calculation.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Figure 2 is a schematic cross-sectional view of the backrest section A-A.

FIG. 3 is a schematic view of the structure of section B-B of the chair panel.

FIG. 4 is a schematic view of the boundary between the recess on the seat panel and the seat panel.

Fig. 5 is a schematic side view of the armrest portion.

Detailed Description

The detailed description of the specific embodiments of the present invention is given in connection with the accompanying drawings, and it is to be noted that the description of the specific embodiments of the present invention is for facilitating understanding of the technical spirit of the present invention, and should not be construed as limiting the scope of the claims of the present invention.

Referring to fig. 1 to 5, the technical solutions of the specific embodiment of the present invention are: comprises a bracket consisting of a front upright 1, a rear upright 2 and a horizontal rod 3 connected with the front and rear uprights (1, 2), wherein the bracket is provided with a horizontal chair panel 4, the top ends of the front and rear uprights (1, 2) are provided with semi-closed ring-shaped supporting pieces 5, the key is that the surface of the chair panel 4 is provided with a concave part 6, the surface of the concave part 6 is formed by smoothly transiting a front inclined plane 7 and a rear curved surface 8, the final end point of a boundary line 9 between the inclined plane 7 and the curved surface 8 is the lowest point c of the concave part 6, the height difference between the lowest point c and the surface of the chair panel 4 is 3-8 mm, and the rear part a of the boundary line between the concave part 6 and the surface of the chair panel 4 ₁ a ₂ Conform to the parabolic equation and are defined by a ₁ Point and a ₂ The points extend forward to the point a and the point a respectively ₃ A dot; the loop-shaped support 5 comprises a back rest portion bb with a curved rear part ₁ And from point b and b ₁ The points respectively extend forward of the armrest portion 10, wherein the angle between the front surface of the backrest portion and the horizontal is between 107 deg. and 109 deg.. In actual use, the user sits in the armchair, the buttocks of the human body are very matched with the concave parts 6, the rear edges of the buttocks are matched with the curved surfaces 8 of the concave parts 6, the curved surfaces 8 have bearing function on the buttocks edges on one hand and have restraining function on the back movement of the buttocks on the other handSo that the buttocks of the human body are positioned at the optimal or most reasonable position, and the unreasonable stress of the human body can be reduced by combining the inclined angle of the backrest part.

The center line dd of the inner surface of the backrest part ₁ The distance between the intersection point D of the lower end point D of the seat panel 4 and the final point E of the center line of the concave part 6 is 50-70 mm, and the distance between the lower end point D and the intersection point D is 250-300 mm. The distance between the DE and the dD and the human body forms a triangle, the d point is the lowest supporting point of the back part and the backrest part of the human body, the d point is very important in the supporting position of the back, the d point supporting position determines the size of the horizontal force born by the lumbar vertebra of the lumbar back part of the human body below the d point, or the distance between the dD determines the inner angle relation of the triangle formed between the DE and the dD and the lumbar part of the human body, namely the larger the included angle is, the larger the horizontal component force born by the lumbar part is, the waist or the lumbar vertebra is more easily damaged, the set distance between the DE and the dD enables the d point supporting position to be most reasonable, the formed included angle between the lumbar part and the dD of the human body is matched with the 107-109 DEG included angle between the backrest part and the horizontal plane, the back part of the human body can be comfortably relied on with the backrest part of the included angle of 107-109 DEG, and the weight equivalent part of the upper part of the back part of the human body is supported on the backrest part, and the total stress and the horizontal component force born by the lumbar part of the human body is further reduced.

The included angle between the inclined plane 7 of the concave part 6 and the horizontal plane is 9-13 degrees, the curvature radius R of the curved surface 8 is 40-50 mm, the inclined plane 7 not only supports the weight of a human body, but also enables the human body to move backwards on the inclined plane 7 or enable the human body to move backwards until the curved surface 8 stops the human body, so that the human body is at an optimal position, and the included angle of the inclined plane 7 can enable the thigh to be lifted by a corresponding angle, so that the thigh is at a most comfortable angle with the human body.

After the human body sits on the armchair, the weight of the arms can also act on the human body, and the human body is in a standing state, wherein the ring-shaped supporting member 5 consists of a point b and a point b ₁ The point extends forward to form a handrail part 10, the handrail part 10 is composed of a gradually descending section and a front horizontal section, and gradually descendsThe height difference between the highest point of the section and the front horizontal section is 30-50 mm, and the height difference between the front horizontal section and the plane of the chair panel 4 is 195-215 mm; the gradual descending section enables the elbow of the human body to have a section which can be placed selectively, enables the upper arm to be located at a proper and comfortable position, enables the forearm to be located in a more natural state of being inclined downwards slightly, enables the included angle between the upper arm and the vertical plane to be a proper included angle section due to the specific height difference between the armrest part 10 and the chair panel 4, finally enables the whole arm to be in a more natural vertical position, enables all joints to be in a more loose state, and improves the overall comfort of the human body.

The technical scheme of the invention ensures that the human body is in a state of relaxation and most reasonable stress, and is suitable for most people, so that the invention maintains the traditional design requirements and simultaneously ensures that the round-backed armchair has more reasonable design factors of human engineering.

Claims

1. The round-backed armchair comprises a bracket formed by a front upright post (1), a rear upright post (2) and a horizontal rod (3) connected with the front upright post and the rear upright post (1, 2), wherein a horizontal chair panel (4) is arranged on the bracket, and a semi-closed ring-shaped supporting piece (5) is arranged at the top ends of the front upright post and the rear upright post (1, 2), and is characterized in that a concave part (6) is arranged on the surface of the chair panel (4), the surface of the concave part (6) is formed by smooth transition of a front inclined surface (7) and a rear curved surface (8), the final end point of a boundary line (9) between the inclined surface (7) and the curved surface (8) is the lowest point c of the concave part (6), the height difference between the lowest point c and the surface of the chair panel (4) is 3-8 mm, and the rear part a1a2 of the boundary line between the concave part (6) and the surface of the chair panel (4) accords with a parabolic equation, and extends forwards from the point a1 and the point a2 to the point a3 respectively; the ring-shaped supporting piece (5) comprises a back part bb1 with a back bending shape and an armrest part (10) extending forwards from the point b and the point b1 respectively, wherein the included angle between the front surface of the back part and the horizontal plane is 107-109 degrees; the interval between the intersection point D of the downward vertical line of the lower end point D of the central line dd1 of the inner surface of the backrest part and the chair panel (4) and the final point E of the central line of the concave part (6) is 50-70 mm, and the interval between the lower end point D and the intersection point D is 250-300 mm.

2. The round-backed armchair according to claim 1, characterized in that: the included angle between the inclined surface (7) of the concave part (6) and the horizontal plane is 9-13 degrees, and the curvature radius R of the curved surface (8) is 40-50 mm.

3. The round-backed armchair according to claim 2, characterized in that: the handrail part (10) is composed of a gradually descending section and a horizontal section, the height difference between the highest point of the gradually descending section and the horizontal section is 30-50 mm, and the height difference between the horizontal section at the front end and the plane of the chair panel (4) is 195-215 mm.