Active type three-safety redundancy high thrust electronic power-assisted brake actuator
An electronic power assist and actuator technology, which is applied to brakes, brake transmissions, vehicle components, etc., can solve the problems of power consumption reliability, uncontrollable and insufficient power assist, etc., to improve reliability, safety, and system reliability. And the effect of saving power and reducing the number of times of use
Active Publication Date: 2017-10-24
CHONGQING UNIV
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Problems solved by technology
[0002] The traditional braking system has become a very mature technology, but there are still some problems in this system: for example, the volume of the vacuum booster is relatively large, the size of the booster is uncontrollable, and it is impossible to cut off the connection between the brake and the human operation
Space saving, but this structure adopts motor self-locking, which consumes power and is not as reliable as manual mechanical self-locking
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] An active three-safety margin high-thrust electronic power-assisted braking actuator, the electronic hydraulic braking system where the actuator is located, such as figure 1 As shown, it includes brake pedal, electronic control unit (ECU), active three-safety margin high-thrust electronic power-assisted brake actuator, master cylinder fluid storage tank, hydraulic master cylinder, and hydraulic control unit (HCU). The brake pedal is hinged with the acti...
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The invention discloses an active type three-safety redundancy high thrust electronic power-assisted brake actuator comprising a manpower mechanical acting part, a motor acting part and a manpower direct acting part. The active type three-safety redundancy high thrust electronic power-assisted brake actuator mainly comprises a ball screw, a ball screw nut, a parallel gear train, a planetary gear train, a trapezoid screw and a trapezoid screw nut, and is characterized in that manpower is amplified by using a lever ratio and a planet reduction ratio, and thus mechanical self-locking can be achieved; a high thrust effect can be achieved, and acting times of the motor can be reduced; and three safety redundancies consisting of mechanical braking achieved by manpower via a mechanical structure, active braking under the effect of the motor and braking failure backup under the direct effect of manpower, are provided. The structure involved by the invention can receive satellite signals and sensor signals to brake in emergency.
Description
technical field [0001] The invention relates to the field of automobile braking, in particular to an active three-safety margin large-thrust electronic power-assisted braking actuator for a vehicle braking system. Background technique [0002] The traditional braking system has become a very mature technology, but there are also some problems in this system: for example, the vacuum booster is relatively large, the power boost is uncontrollable, and it is impossible to cut off the connection between the brake and human operation. [0003] Now the research hotspot of vehicle braking system is mainly brake-by-wire system, which is divided into electro-hydraulic braking system and electro-mechanical braking system. EMB cancels the traditional hydraulic brake pipeline, and has the characteristics of fast response and simple structure. However, a large number of electronic devices are used in the EMB system, so the backup in the event of failure during braking is too complicated....
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IPC IPC(8): B60T13/74
CPCB60T13/745
Inventor 李聪波胡捷朱道光胡芮陈睿杰陈文倩单亚帅杨青山
Owner CHONGQING UNIV