The invention relates to the technical field of vehicle braking, and discloses a pressure control unit and an electromechanical hydraulic servo braking system, a nut is in a conventional state, the torque between the nut and a retainer is smaller than a preset torque, and the nut can move axially; when the torque between the nut and the retainer is increased to be not smaller than the preset torque, the nut is switched to be in the overload state, the one-way overload rotating unit enables the anti-rotating sleeve to rotate in the circumferential direction in one direction relative to the anti-rotating flange, the retainer transmits the rotating torque of the lead screw to the nut, and the nut drives the anti-rotating sleeve to rotate in the circumferential direction in one direction relative to the anti-rotating flange. The torque of the nut and lead screw assembly is released, torsional plastic deformation of the anti-rotation sleeve can be avoided, the hidden danger of lead screw breakage is eliminated, long-time stalling of the brake motor is prevented, and the reliability of the electromechanical hydraulic servo brake system is improved.
本发明涉及车辆制动技术领域,公开了一种压力控制单元及机电液伺服制动系统,丝母处于常规状态,丝母与止动件之间的扭矩小于预设扭矩,丝母可轴向移动;在丝母与止动件之间的扭矩增大至不小于预设扭矩时,丝母切换至过载状态,单向过载旋转单元使防转套筒能够相对于防转法兰周向单向转动,止动件将丝杠转动的扭矩传递至丝母,丝母将带动防转套筒相对于防转法兰周向单向转动,对丝母丝杠组件的扭矩进行释放,不仅能够避免防转套筒发生扭转塑性变形,还消除了丝杠断裂的隐患,防止制动电机长时间堵转,提高了机电液伺服制动系统的可靠性。
Pressure control unit and electromechanical hydraulic servo brake system
一种压力控制单元及机电液伺服制动系统
2024-02-02
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
European Patent Office | 2022
|European Patent Office | 2023
|European Patent Office | 2018
|European Patent Office | 2017
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