Chair capable of changing gravity center along with changes in elevation angle of backrest
A backrest and center of gravity technology, applied in the field of chairs, can solve the problems of unstable center of gravity, easy to fall backward, single function, etc., and achieve the effect of reasonable structure and fast switching
Inactive Publication Date: 2013-05-08
董志雄
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Problems solved by technology
[0002] Most of the existing reclining seats on the market cannot be flattened, and the center of gravity is unstable, easy to fall backwards, and the function is single, lacking additional functions and value
Method used
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Embodiment Construction
[0015] The present invention is further illustrated below by way of examples.
[0016] Such as figure 1 , 2 As shown, the chair whose center of gravity changes with the elevation angle of the backrest (2) includes the front leg (6), the rear leg (3), the seat (1), the angle adjustment mechanism, the backrest (2) and the headrest (8) and The armrest (7) is characterized in that: the rear chair leg (3) is hinged to the backrest (2), the backrest (2) is hinged to the seat (1), the seat (1) is hinged to the pull rod (4), and the pull rod (4) is hinged with the rear chair leg (3) to form a four-bar linkage mechanism, the end of the rear chair leg (3) is equipped with a rear roller (5), and the front chair leg (6) is fixedly connected with the seat (1). The angle adjustment mechanism includes a controllable gas spring support rod (13), a steel wire rope (21) and an angle adjustment handle (15), and the two ends of the controllable gas spring support rod (13) are hinged to the four...
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The invention relates to a chair capable of changing the gravity center along with changes in the elevation angle of a backrest. The chair comprises front chair legs, rear chair legs, a chair seat, an angle adjusting mechanism, a backrest, a headrest and handrails, and is characterized in that the rear chair legs are articulated with the backrest, the backrest is articulated with the chair seat, the chair seat is articulated with pull rods, the pull rods are articulated with the rear chair legs for forming a four-link mechanism, rear rolling wheels are arranged at the tail ends of the rear chair legs, the front chair legs are fixedly connected with the chair seat, and the angle adjusting mechanism is used for controlling the angle of any one articulation point in the four-link mechanism. When the angle adjusting mechanism is in a locked state, the four-link mechanism is fixed, and the angle between the backrest and the chair seat is fixed; and when the angle adjusting mechanism is in a free state, the four-link mechanism can move freely and drive the rear rolling wheels to roll front and back, the larger the angle between the backrest and the chair seat, the larger the interval between the front chair legs and the rear chair legs, and the function of changing the gravity center along with the changes in the elevation angle of the backrest can be further realized.
Description
technical field [0001] The invention relates to a chair with a body-building function in which the center of gravity changes with the elevation angle of the backrest. Background technique [0002] Most of the existing reclining seats on the market cannot be flattened at the backrest elevation angle, and the center of gravity is unstable, easy to fall backwards, and the function is single, lacking additional functions and value. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a chair that can be used as an office chair, a chair, and a sit-up massage fitness machine. The center of gravity changes with the elevation angle of the backrest. [0004] The technical solution of the present invention is: the chair whose center of gravity changes with the backrest elevation angle, comprises front chair leg, rear chair leg, seat, backrest, backrest angle adjustment mechanism and headrest and armrest, is characterized in tha...
Claims
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IPC IPC(8): A47C13/00A47C1/024A47C1/034A47C7/40A47C7/38A61H15/00A63B23/02
Inventor 董志雄
Owner 董志雄