Electric power-assisting braking mechanism and control method thereof

Abstract

The invention discloses an electric power-assisting braking mechanism and a control method of the electric power-assisting braking mechanism. The electric power-assisting braking mechanism comprises a power-assisting motor, an intermediate shaft, a locking device and a braking power-assisting mechanism. The output assisting power of the power-assisting motor is transmitted to the braking power-assisting mechanism through the intermediate shaft; one end of the braking power-assisting mechanism is connected with a braking pedal assembly, and the other end of the braking power-assisting mechanism is connected with a master cylinder push rod; the locking device and the intermediate shaft are jointed functionally. When the locking device acts on the intermediate shaft, the intermediate shaft stops rotating, and the reaction force, for the braking force, produced by the master cylinder push rod is transmitted to the intermediate shaft through the braking power-assisting mechanism from the master cylinder push rod and offset by the locking device acting on the intermediate shaft. By applying the electric power-assisting braking mechanism and the control method thereof, the safety of an electric power-assisting braking system can be improved.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and in particular relates to an electric power-assisted braking mechanism and a control method for the electric power-assisted braking mechanism. Background technique [0002] At present, the brake booster commonly used in passenger cars is a diaphragm vacuum booster. This mechanism needs the vacuum of the engine intake pipe to generate boost, and it can no longer boost after the engine is turned off. Its boosting characteristics are determined by the mechanical structure characteristics of the booster and diaphragm, and the action of the brake cannot be automatically controlled. In order to solve the above problems, an electric power-assisted braking mechanism is produced, which uses a DC motor as a power source, and converts the torque of the motor into the thrust of the brake master cylinder push rod through a certain reduction mechanism, thereby assisting the driver to complete the braking...

AI Technical Summary

Problems solved by technology

[0003] The electric power-assisted braking device disclosed in the current literature requires an additional mechanical hand brake or EPB module to realize the parking brake function, which is costly and will occupy additional vehicle space for layout. At the same time, the function is relatively single and has not yet been integrated The braking system is associated and coordinated with the vehicle anti-theft system

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