Electrically operated multi-functional chair

Abstract

An electrically operated multi-functional chair comprises a rotatable chair base, a seat, a backrest, and a leg rest. The rotatable chair base is connected to the underside of the seat; the rotatable chair base allows the seat to rotate. The seat has a drive device installed thereunder; the seat and the leg rest are connected through a linkage bar set, wherein the drive device can drive the linkage bar set to fold out the leg rest from below the seat. The backrest is disposed in one side of the seat; the backrest is pivoted to a sliding plate; the sliding plate is connected to the drive device. The drive device is controlled by a controller; the leg rest is pushed by the linkage bar set, which is driven by the drive device, and folded out from below the seat. At the same time, the drive device synchronously drives the sliding plate to move, making the backrest to recline synchronously and to create an effect of reclining/lying.

1 . An electrically operated multi-functional chair, comprising a rotatable chair base, a seat, a backrest, and a leg rest that can be folded out from below the seat, wherein
 the rotatable chair base is connected to the underside of the seat and the rotatable chair base allows the seat to rotate;   the seat is a part on which the user can sit;   the seat has a drive device installed thereunder;   the seat and the leg rest are connected through a linkage bar set, wherein the drive device can drive the linkage bar set to fold the leg rest out from below the seat;   the backrest is disposed in one side of the seat; the backrest is pivoted to a sliding plate; the sliding plate is connected to the drive device; and   accordingly, the leg rest, moved by the linkage bar set which is driven by the drive device, is folded out from below the seat, wherein the drive device is controlled by a controller; the drive device synchronously drives the sliding plate to move, making the backrest to recline synchronously and to create an effect of reclining/lying.   
     
     
         2 . The electrically operated multi-functional chair as claimed in  claim 1 , wherein the drive device can be an electric cylinder, an electric push bar, or a linear drive equipment. 
     
     
         3 . The electrically operated multi-functional chair as claimed in  claim 1 , wherein the linkage bar set comprises a first connecting bar and a second connecting bar, both configured in a V shape; a first end of the first connecting bar is connected to the seat toward the backend thereof; a second end of the first connecting bar is connected to the leg rest near the backend thereof; a first end of the second connecting bar is connected to the seat at a location toward the frontend thereof; a second end of the second connecting bar is connected to the leg rest near the frontend thereof; a fulcrum is disposed on and between the first connecting bar and the second connecting bar; a third connecting bar is disposed on the lower area of the first end of the second connecting bar; an extension bar of the drive device is connected to the third connecting bar; the drive device is controlled by a controller to drive the extension bar extending forward, which can move the third connecting bar and force the first connecting bar and the second connecting bar to move forward and fold out the leg rest from below the seat. 
     
     
         4 . The electrically operated multi-functional chair as claimed in  claim 3 , wherein the backrest is pivoted to the seat through a first pivot end; the backrest is pivoted to a sliding plate through a second pivot end; one end of the sliding plate, opposite to the second pivot end, is connected to the first end of the first connecting bar of the linkage bar set; when the drive device drives the leg rest to fold out, the sliding plate is driven by the first connecting bar, forcing the backrest to gradually leaning downward to a flat position. 
     
     
         5 . The electrically operated multi-functional chair as claimed in  claim 1 , wherein the seat is a soft foam seat pad having a layer of fleece fabric thereon. 
     
     
         6 . The electrically operated multi-functional chair as claimed in  claim 1 , wherein the backrest further comprises a backrest cushion made of mesh fabric. 
     
     
         7 . The electrically operated multi-functional chair as claimed in  claim 6 , wherein the backrest cushion is equipped with a massage device. 
     
     
         8 . The electrically operated multi-functional chair as claimed in  claim 7 , wherein a headrest is disposed on the backrest cushion; the headrest further comprises a L-shape handle for adjusting the headrest; the backrest cushion comprises an adjustment slot to adjust the height of the L-shape handle with respect to the adjustment slot, which is a function for adjusting the height of the headrest; the headrest has a rotating end, so that the headrest can rotate while pivoting around the rotating end in order to adjust the angle of the headrest. 
     
     
         9 . The electrically operated multi-functional chair as claimed in  claim 1 , wherein both sides of the seat are disposed with an armrest separately; the armrest comprises an armrest height-adjustable unit, an armrest angle-adjustable unit, and an armrest pad; the armrest height-adjustable unit can adjust the height of the armrest; the armrest angle-adjustable unit, disposed between the armrest height-adjustable unit and the armrest pad, can adjust the angle in the horizontal direction and the tilt angle of the armrest pad. 
     
     
         10 . The electrically operated multi-functional chair as claimed in  claim 1 , wherein the controller can further have a wireless control module, so that the user can adjust the reclining angle of the backrest and the tilt angle of the leg rest remotely by controlling the drive device through the wireless control module.