Electric controller used for controlling power-assisted steering system

Abstract

The invention discloses an electric controller used for controlling a power-assisted steering system. The electric controller comprises a PCB, a base and a cover plate. Tapered support columns and a right-angle trapezoidal thermal conduction seat are integrally formed on the base, the PCB is arranged on the tapered support columns, positioned through penetrating two positioning columns of the PCB and fixed to the thermal conduction seat by combining a bolt, the two positioning columns have different cross sections, the tapered support columns are positioned in the cover plate to cause the cover plate and the base to be buckled tighter and tighter, a triangular malassembly prevention mark is arranged on the position, close to the right rear corner, of the top of the cover plate, four rectangularly-distributed upwards-extending cylinders are integrally formed on the base, threaded installation blind holes corresponding to the cylinders are formed in the back of the base, and a plurality of right-left extending bar-type thermal conduction grooves are formed in the back of the base. By adopting the structure, the problems that the base and the cover plate, and the PCB and the base shake slightly after being installed, the temperature of part of the PCB is too high, and the cover plate and the PCB are arranged reversely are effectively avoided, and the electric controller used for controlling the power-assisted steering system has as a dustproof effect.

Description

technical field [0001] The invention relates to an electric power steering electric control box used in automobiles, belonging to the technical field of mechanical structures. Background technique [0002] The electric power steering electric control box is an essential part of the electric power steering control system, which consists of a PCB board, a base, a cover plate and a connector. The cover plate and the base together form an electric control box shell, and the PCB board is installed on the base and located in the electric control box shell. There are four connectors in total, namely motor power connector, sensor signal connector, vehicle body power connector and vehicle body signal connector, and the four connectors are all installed on the side wall of the cover plate. [0003] The base and the cover are fixed together by pressing. In the actual production and use process, the base and the cover are occasionally pressed and not tightened after being pressed. The ...

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problems of slight shaking after installation between the base and the cover plate, between the PCB board and the base, and the local temperature of the PCB board is too high, and the front and back of the cover plate and the PCB board are reversed. At the same time, the overall size is reduced, which is convenient overall layout

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