Power-assisted steering electric control box low in cost

Abstract

The invention discloses a power-assisted steering electric control box low in cost. The power-assisted steering electric control box comprises a printed circuit board (PCB), a base and a cover plate. Tapered support columns and a heat-conducting seat in a right trapezoid shape are integrally formed on the base. The PCB is disposed on the tapered support columns and located through two locating columns penetrating through the PCB, and the PCB is fixed to the heat-conducting seat by the combination with screws. The base and the cover plate are arranged together in a press fit mode. The tapered support columns are disposed in the cover plate, and the cover plate and the base are made to be fastened tighter and tighter. A triangular mistaken-mounting prevention mark is arranged at the position, close to the rear right corner, of the top of the cover plate. Four columns extending upwards and distributed in a rectangular shape are integrally formed on the base, threaded mounting blind holes with the number identical to the number of the columns and the positions corresponding to the positions of the columns are formed in the back of the base, and multiple strip-shaped heat-conducting grooves extending left and right are formed in the back of the base. By means of the structure of the power-assisted steering electric control box, the problems of slight shaking between the base and the cover plate as well as between the PCB and the base after mounting, too high local temperature of the PCB and reverse disposing of the cover plate are effectively solved; besides, the dustproof effect is achieved, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to an electric control box used for an electric power steering system on an automobile, 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 bei...

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 are reversed. At the same time, the overall size is reduced to facilitate the overall layout. reduce manufacturing costs

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