Chair adapted to adjust according to person's sitting-posture vertebral curve (i)

Abstract

A chair adapted to adjust according to a person's sitting-posture vertebral curve, mainly includes a seat cushion and a back cushion. Plural raising-lowering apparatus are provided in the seat cushion and back cushion, the position of the raising-lowering apparatus could be automatically adjusted or predefined. When a user is sitting in the chair, the raising-lowering apparatus would raise to a predefined position according to the user's sitting-posture vertebral curve, to support the user's sitting-posture vertebral curve, so that the user would feel comfortable.

1 . A chair adapted to adjust according to person's sitting-posture vertebral curve ( 1 ), comprising a seat cushion and a back cushion, and the seat cushion and back cushion being installed therein with at least a set of raising-lowering apparatus, in which the raising-lowering apparatus consists of:
 a baseboard, with an elevation sensor being installed thereon and fixedly installed with a power generating device, which power generating device having a power output shaft;   a moveable base, with a plurality of elastic bodies being installed thereon at an interval of equal distance, which elastic body being installed therein with the sensing rod, the top end of which sensing rod being fixedly connected at the top end of the elastic body, which top end penetrating through the bottom side of the moveable base; the moveable base is combined with the power output shaft of the power generating device, such that the moveable base is located at the top side of the chassis and brought by the power generating device to make upward/downward movements;   a control circuit, electrically coupled to the elevation sensor and the power generating device, such that upon reception of an elevation detecting signal from the elevation sensor, the control circuit drives the power generating device based on the receive signal to operate thereby causing the power generating device to bring the moveable base to make upward/downward movements, allowing the seat cushion and the back cushion to present an ideal person's sitting-posture vertebral curve.   
     
     
         2 . The chair adapted to adjust according to person's sitting-posture vertebral curve ( 1 ) according to  claim 1 , wherein the power generating device is a motor. 
     
     
         3 . The chair adapted to adjust according to person's sitting-posture vertebral curve ( 1 ) according to  claim 1 , wherein the power generating device is a hydraulic cylinder. 
     
     
         4 . The chair adapted to adjust according to person's sitting-posture vertebral curve ( 1 ) according to  claim 1 , wherein the power generating device is a pneumatic cylinder. 
     
     
         5 . The chair adapted to adjust according to person's sitting-posture vertebral curve ( 1 ) according to  claim 1 , wherein a sideboard extends upward from the both ends of the baseboard and a plurality of supporting brackets extends upward from the top side of the baseboard, in which the supporting bracket is equivalently elevated as the sideboard for supporting the moveable base to increase the stability of the moveable base. 
     
     
         6 . The chair adapted to adjust according to person's sitting-posture vertebral curve ( 1 ) according to  claim 5 , wherein the sideboard is installed thereon with an elevation sensor for detecting the lowered elevation of the sensing rod inside the elastic body. 
     
     
         7 . The chair adapted to adjust according to person's sitting-posture vertebral curve ( 1 ) according to  claim 1 , wherein the power output shaft of the power generating device is a screw rod, and the moveable base is installed thereon with a screw hole for bringing the moveable base to make upward/downward movements through the screw rod. 
     
     
         8 . The chair adapted to adjust according to person's sitting-posture vertebral curve ( 1 ) according to  claim 1 , wherein the moveable base thereon has a positioning trough, which positioning trough being installed with a plurality of holes thereby allowing the sensing rod inside the elastic body to penetrate through.