Chair structure capable of assisting waist to share body weight
A waist and seat technology, applied to chairs, other seating furniture, stools, etc., can solve problems such as complex structures and unconformity with ergonomic principles
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Embodiment 1
[0056] Embodiment 1: as Figure 1 to Figure 4 , Figure 19 to Figure 22 , a seat structure capable of sharing body weight by the waist, including a seat surface 1 that can be lifted up and down and a lumbar support assembly 2 that is opened or clamped, and the lumbar support assembly includes a pair of brackets 21, a driving member 22 and a link mechanism 23, wherein the brackets 21 are located on both sides of the chair surface, the tops of the two brackets are connected to the seat, and the outside of the brackets 21 is clamped to the center by the matching driving member 22 and the linkage mechanism 23 To achieve the purpose of tightening the waist. The driving parts are two groups, which are respectively located on the outside of the two brackets. Each group of driving parts includes a crank 221. One end of the crank has a roller 222 and is pressed against the bottom of the outer side of the bracket. The middle of the crank is connected to the chair surface through a conn...
Embodiment 2
[0058] Example 2: see Figure 7 to Figure 13 , a seat structure that can share the weight of the body with the waist, including a seat surface 1 that can be lifted up and down and a lumbar support assembly 2 that can be opened or clamped. There is a double-layer structure under the seat surface, one of which is filled with liquid Bag or liquid water bag 42, this liquid bag or liquid bag are communicated with the protective bag or the protective bag 210 inboard of both sides support tool by pipeline, regulating valve is installed on the pipeline to control the liquid in the liquid bag or liquid bag under the chair surface The weight of the human body is transferred to the protective bag or protective bag inside the supporting tool to improve the comfort of supporting the waist of the supporting tool. Another layer of spring elements is installed under the seat surface, such as spring 41, which can be used for energy storage and driving to reset. The present invention mentions t...
Embodiment 3
[0060] Embodiment 3: as Figures 16 to 18 As shown, the lumbar support assembly 2 is divided into two groups, which respectively extend downwards to the seat surface 1 to form a lumbar support part 21 and a connecting rod part 22. The lumbar support part is inwardly convex to support the waist of the human body. The middle part is hinged on the chair frame, and when the chair surface moves down, pressure is applied to one end of the connecting rod so as to drive the two lumbar support parts to squeeze inward to tighten the waist.
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