Manufacturing method of electric vehicle backrest frame with backrest cushion convenient to adjust and install

Abstract

The invention provides a manufacturing method of an electric vehicle backrest frame with a backrest cushion convenient to adjust and install and belongs to the field of electric vehicles. The manufacturing method comprises the following steps that firstly, a metal plate is cast through an iron metal material; the metal plate is subjected to punching treatment, and venting holes are evenly punched in the metal plate; the surface of the punched metal plate is subjected to polishing treatment; and a connecting plate is cast through the same metal material, one end of the connecting plate is welded to the middle position of the lower side edge of the end face of the metal plate, and the connecting plate is perpendicular to the metal plate. According to the manufacturing method, the metal plate is subjected to quenching treatment, the hardness of the metal plate is improved, and a passenger at the back seat can be supported conveniently; ventilation of the metal plate is facilitated through the venting holes; the surface of the punched metal plate is subjected to polishing treatment, and the situation that burrs are generated during punching, and smearing of other materials to the surface of metal is affected is avoided; and the outer surface of the metal plate is subjected to phosphating treatment, the surface is covered with a layer of phosphating film, the phosphating film has porosity, permeation of a coating material is facilitated, and the adsorbability of a coating is improved.

Description

Technical field [0001] The invention relates to a manufacturing method of an electric vehicle backrest frame, in particular to a manufacturing method of an electric vehicle backrest frame which is convenient to adjust and install a backrest cushion. Background technique [0002] Nowadays, there are more and more electric vehicles, which are gradually replacing bicycles. Every household has electric vehicles. It is convenient to go out. Generally, the number of people carried by electric vehicles is in the range of two to three persons, and there is a backrest behind the back seat. , To prevent the rear passengers from tilting and falling down due to the impact force during sudden braking. Current electric vehicle backrests are generally manufactured with molds when casting the base. Such backrests generally have a relatively small supporting surface and are also used Several steel pipes are molded into a certain shape and then welded together. The frames obtained by these two fra...

AI Technical Summary

Problems solved by technology

[0002] Nowadays, there are more and more electric vehicles, which have gradually replaced bicycles. Every household has electric vehicles, which are convenient for going out. Generally, the number of people carried by electric vehicles is within the range of two to three people, and a backrest will be set behind the back seat. , to prevent the rear passengers from falling backwards due to the impact force during sudden braking, and the current backrests of electric vehicles are generally made with molds when casting the base. A few steel pipes are molded into a certain shape and then welded together. The frames obtained by these two frame manufacturing methods all need to use screws or other fastening devices to fix the fixed-size back cushion on the frame, which is troublesome to install. , and the backrest is installed on the trunk in order to avoid hindering the installation of the trunk on the rear side, but this kind of backrest is made of hard plastic, which is not comfortable enough, and the backrest cushions currently used are relatively thick leather cushions. In summer, when passengers lean on it, the back is easily airtight and sweats easily, so an adjustable switch is required

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