Dynamic tray

Abstract

The invention relates to a dynamic tray comprising a first base, a second base, a first crank, a second crank, a warping plate and an elastic resetting device; the second base is rotatably connected to the left and the right of the first base; one end of the first crank is hinged to the first base, the other end of the first crank is hinged to an elastic transfer connecting piece, and the elastictransfer connecting piece is applied to a connecting seat supporting piece; the two ends of the second crank are hinged to the second base and a bearing piece respectively, the bearing piece is rigid,the bearing piece is applied to the connecting seat supporting piece, and the bearing piece is located at the upper end of the second base; the warping plate is configured to be connected with a chair back assembly, and the warping plate and the second crank are connected into a whole; and the elastic resetting device is used for enabling the second crank to restore the normal position after thewarping plate pries the second crank to move. According to the dynamic tray in the invention, a four-link principle is adopted for construction; the functions of lifting and left-right swinging of thechair seat are achieved simultaneously; and when a connecting seat is configured, the sitting posture changes of tilting back and forth and swinging left and right of a user can be automatically adapted to, the defects brought by long sitting are overcome, and the requirements of different people are met.

Description

technical field [0001] The invention relates to the field of seats, in particular to a dynamic tray. Background technique [0002] The seat chassis, also known as the seat tray, is an important part installed under the seat cushion. The lifting of the seat cushion and the adjustment of the tilt angle of the backrest are all done by the chassis. [0003] Since the human body will change various postures when sitting, it is necessary for the back of the chair to move back and forth following the back of the human body to make the back of the human body feel more comfortable; Adaptive seat. [0004] For example: Patent No. CN201320715928.9 discloses "a novel self-adaptive elastic seat", comprising a chair back frame, a headrest mounted on the top of the chair back frame, mounted on the chair back frame and positioned on the headrest As for the chair back below, the chair back includes a plurality of chair back strips, the chair back strips are independent of each other and ea...

AI Technical Summary

Problems solved by technology

[0010] Although the above-mentioned seats can swing from side to side, they are equipped with a large number of rubber parts and a relatively complicated linkage mechanism, and the installation is also relatively complicated. The versatility is not enough, and it is difficult to achieve mass production

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