Zero-gravity seat and vehicle comprising same
A zero-gravity seat comprises a seat base, a seat back, a front support frame, and a rear support frame. Upper ends of the front support frame and the rear support frame are respectively hinge-connected to front and rear ends of the seat base. Lower ends of the front support frame and the rear support frame are respectively hinge-connected to a seat mounting base. A lower end of the seat back can rotate around a rear end portion of the seat base. When the seat back and the seat base rotate in a linked manner, a small step difference or even no step difference is present between a lower end portion of the seat back and the upper end surface of the seat base such that the back of the occupant conforms to the seat back, thereby ensuring the comfort of a ride.
1 . A zero-gravity seat includes a seat base, a seat back, a front support frame, a rear support frame, upper ends of the front support frame and the rear support frame are respectively hinge-connected to front and rear ends of the seat base, lower ends of the front support frame and the rear support frame are respectively hinge-connected to a seat mounting base, wherein a lower end of the seat back is rotatable around a rear end portion of the seat base, and a rotation center of the seat back is located below an upper end surface of the seat base;
the rotation center is coaxial with a hinge-connecting center of the upper end of the rear support frame, and a top end of the rear support frame is fixed on the seat back,
wherein an angle adjuster is arranged at the rotation center of the seat back, a fixing part of the angle adjuster is directly fixed on the seat base and a rotating part of the angle adjuster is directly attached on the rotation center,
wherein the seat base includes two oppositely arranged side wall plates, and the seat back includes two oppositely arranged back wall plates, one angle adjuster is arranged between each pair of corresponding side wall plates and the back wall plates, with side connecting surfaces of the fixed part and the rotating part of each angle adjuster are respectively directly fixed to the side wall plate and the back wall plate, such that an angle between the seat base and the seat back is adjusted by regulating an angle between the side wall plate and the back wall plate via the angle adjuster, wherein the rotation center of the seat back is located at a lower end of the back wall plate,
on one side of the seat, the side wall plate, the back wall plate, and the rear support frame are arranged sequentially from an outside to an inside in a width direction of the seat,
along the width direction of the seat, each angle adjuster is located between the side wall plate and the back wall plate,
a first connecting rod is provided between the two oppositely arranged side wall plates, and two ends of the first connecting rod are respectively fixedly connected with the rotating parts of each angle adjuster, and
a second connecting rod is provided between the two side wall plates, and two ends of the second connecting rod are respectively fixedly connected with the front ends of the two sides wall plates.
2 . The zero-gravity seat according to claim 1 , wherein a hinge-connecting center of the lower end of the rear support frame is located on the front side of the rotation center, a hinge-connecting center of the lower end of the front support frame is located at the rear side of the hinge-connecting center of the upper end of the front support frame.
3 . The zero-gravity seat according to claim 1 , wherein two front support frames and two rear support frames are provided, the two front support frames are respectively arranged on the front ends of two said side wall plates, and the two rear support frames are respectively arranged on a rear end of the side wall plate.
4 . The zero-gravity seat according to claim 1 , wherein a front hinge seat and a rear hinge seat are respectively provided on the seat mounting base, and the front support frame is hinged on the front hinge seat, and the rear support frame is hinged on the rear hinge seat.
5 . The zero-gravity seat according to claim 1 , wherein the rear support frame and the seat back are integrally formed or assembled together.
6 . The zero-gravity seat according to claim 1 , wherein a driving mechanism is provided on the angle adjuster, the driving mechanism is controlled by a manual drive or an electric drive, and the driving mechanism drives the rotating part of the angle adjuster to rotate, so as to achieve the rotation of the seat back around the rotation center.
7 . A vehicle, wherein the vehicle comprises the zero-gravity seat according to claim 1 .
8 . The zero-gravity seat according to claim 1 , wherein the side connecting surfaces of the fixed part and the rotating part of the angle adjuster are respectively fixed to the side wall plate and the back wall plate by welding.
9 . The zero-gravity seat according to claim 1 , wherein the rear support frame is fixed to the seat back by being fixedly connected to the back wall plate.
10 . The zero-gravity seat according to claim 1 , wherein the two ends of the first connecting rod respectively pass through the corresponding rear support frames and are fixedly connected to the corresponding rotating parts.