Seat framework and preparation method thereof

Abstract

A seat framework comprises a door framework integrally formed by thermoplastic composite materials. The framework is provided with a U-shaped groove structure, a U-shaped groove of the framework is divided into an area A, an area B and an area C from bottom to top, the area A is of a solid structure, a connecting hole connected with a seat base is formed in the area A, the height of the area B is 2-6 times that of the width of the area A, a wedge-shaped solid body is arranged in the area B, the upper surface of the wedge-shaped solid body comprises the top of the lower end face of the area B and the bottom of the upper end face of the area B, and reinforcing ribs are arranged in a hollow area of the area B and the area C. The U-shaped groove at the connecting hole at an original easily broken position, namely, at the lower end of the framework, is filled, the lower portion of the U-shaped groove of the framework above the connecting hole is filled, and the strength and the stress of the connecting hole in the framework are enhanced. Therefore, the overall strength and impact resistance of the seat framework can be improved, strength requirements can be met by stress analysis, the framework is no longer broken, and the stress condition of the seat framework meets the safety standard of an interurban coach.

Description

technical field [0001] The invention belongs to the technical field of automobile seats, and in particular relates to an automobile seat frame and a preparation method thereof. Background technique [0002] At present, most of the backrest frames used in passenger car seats on the market are metal backrests, and the processing procedures are complicated, which not only seriously restricts the process of the whole seat, but also consumes time, energy and resources, and the overall parts are heavy, which is difficult. In line with the requirements of lightweight vehicles and the national call for energy conservation and emission reduction, therefore, the production of seat frames made of plastic raw materials is becoming more and more popular, especially thermoplastic composite materials, which have low density and small linear expansion coefficient, which can reduce the stress in the product molding process. Shrinkage rate, due to the low speed of the bus, the injection molde...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the backrest frames used in passenger car seats on the market are metal backrests, and the processing procedures are complicated, which not only seriously restricts the process of the whole seat, but also consumes time, energy and resources, and the overall parts are heavy, which is difficult. In line with the requirements of lightweight vehicles and the national call for energy conservation and emission reduction, therefore, the production of seat frames made of plastic raw materials is becoming more and more popular, especially thermoplastic composite materials, which have low density and small linear expansion coefficient, which can reduce the stress in the product molding process. Shrinkage rate, due to the low speed of the bus, the injection molded overall thermoplastic composite seat can meet the overall requirements, but its safety performance still needs to be improved

Patent CN201410008047.2 discloses a long-distance bus seat back frame, such as figure 1 As shown, it is specifically disclosed: a doorframe-shaped skeleton integrally formed with thermoplastic composite materials, the skeleton is a U-shaped groove structure, and the dimensions of the skeleton and the U-shaped groove are optimized to improve the overall stress situation, but it is found in the application that , the position g near the skeleton connection hole is prone to breakage, and the safety still needs to be further improved

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