Car seat backrest framework capable of changing shape

Abstract

The invention discloses a car seat backrest framework capable of changing shape. The car seat backrest framework capable of changing the shape comprises a frame, the frame is provided with a left strut and a right strut, a plurality of first transverse through holes are formed in the left strut from the top to bottom, and a plurality of corresponding second transverse through holes are formed in the right strut from the top to bottom; a plurality of rollers are arranged between the left strut and right strut, the left end of each roller is firmly connected with a left pin shaft while the right end is firmly connected with a right pin shaft, and the peripheral surface of each roller is composed of a plurality of curved surfaces in a connecting mode; each left pin shaft passes through the corresponding first transverse through hole to firmly connect with a cover body, and a first pressure spring sleeves each left pin shaft between the cover body and left strut; each right pin shaft passes through the corresponding second transverse through hole to firmly connect with a locating knob, a plurality of locating holes are formed in the right strut at the periphery of each second transverse through hole, each locating knob is provided with a locating pin matched with the corresponding locating hole, and a second pressure spring sleeves each right pin shaft between the right strut and corresponding roller. The car seat backrest framework capable of changing the shape is convenient to change the backrest shape to meet the comfort and anti-fatigue needs of a passenger, the structure is simple, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of automobile seat manufacturing, in particular to a shape-transformable automobile seat back frame. Background technique [0002] The traditional car seat back frame is composed of sheet metal parts and pipes. After the seat back frame is assembled and welded, its shape cannot be changed, which cannot meet the special requirements of passengers for the shape of the backrest. In the case of taking a car seat for a long time, the passenger is prone to fatigue, which affects the comfort of the passenger in the vehicle. [0003] In order to change the shape of the backrest of the car seat and the sitting posture of the passengers to reduce the fatigue of the passengers. On June 18, 2014, an invention patent application with the application number "201310683948.7" and the name "vehicle seat" was published, which included: a seat back with a variable shape for the seated person a plurality of air cells located ...

AI Technical Summary

Problems solved by technology

This kind of vehicle seat changes the shape of the backrest of the vehicle seat by changing the inflation amount of the airbag to reduce the fatigue of passengers, but its manufacturing cost is relatively high, and its operation and control are cumbersome, so it is difficult to promote on a large scale

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