Backrest skeleton of car

Abstract

The invention provides a backrest skeleton of a car. The backrest skeleton is integrally molded by plastic materials. The skeleton is provided with a shell, a middle cross beam and a bottom cross beam, wherein the shell extends along the circumferential direction of the skeleton; the middle cross beam is used for connecting the middle parts of the two sides of the shell; the bottom cross beam is used for connecting the bottom parts of the two sides of the shell; reinforcing parts are arranged on the inner sides between the upper parts and the bottom parts of the two sides of the shell; and the cross sections of the two sides of the shell are shaped like a horizontal F or a figure shown in the description. The plastic backrest skeleton provided by the invention is not only lighter than a metal skeleton in weight, but also superior to the metal skeleton in space; the section width of the backrest skeleton is thinner than that of the original plastic skeleton by 1.0mm to 2.5mm, so that the thickness of the backrest is reduced, and thus the usable space in the car is enlarged; and simultaneously, the curved surface, which can be possibly contacted by a passenger, on the surface of the skeleton is changed, so that the shape of the backrest skeleton is more closer to the curved surface of the back of a human body, and the area of the supporting surface of the human body is enlarged, therefore, the comfort of the human body is improved, and simultaneously, the thickness of a foaming layer can be reduced by 5mm to 20mm.

Description

technical field The invention relates to the technical field of automobile seats, in particular to an automobile seat backrest frame. Background technique Chinese Patent Publication No. CN 101708699A discloses a seat back frame as shown in Figure 1, the material of the back frame is plastic, the frame is integrally formed by plastic material and the frame has a shell 1 extending along its circumference and connecting the middle part of the shell 1 The middle beam 7 and the bottom beam 9 connecting the bottom of the shell 1, the transverse section of the shell 1 is "n" shape, and the inner side of the shell of the n-shaped cross section has honeycomb ribs 2. The honeycomb ribs 2 may have different heights and / or different thicknesses along the entire skeleton. The thickness and / or width of the honeycomb reinforcing rib 2 is relatively large at the position where the skeleton is stressed; the thickness and / or width of the honeycomb reinforcing rib 2 is relatively small at the...

AI Technical Summary

Problems solved by technology

The technical problem to be solved by the present invention is to provide an automobile seat back frame with a relatively thin thickness in the transverse section of the shell in view of the problem that the thickness of the transverse section of the outer shell is relatively thick in the existing plastic seat back frame