The invention discloses an electric power steering mechanism which comprises an operating mechanism used for operating steering and a steering mechanism connected to wheels, and the operating mechanism is connected with the steering mechanism through an electric power steering gear. The mechanism further comprises a controller, a vehicle speed sensor and a torque sensor, wherein the vehicle speedsensor is used for detecting the rotating speed of wheels, the torque sensor is used for detecting external force torque borne by the operating mechanism, and the controller is in signal connection with the electric power-assisted steering gear, the vehicle speed sensor and the torque sensor. When the external force torque is larger than A, the electric power-assisted steering gear provides power-assisted torque for the steering mechanism, and the power-assisted torque is in negative correlation with the rotating speed of the wheels. The electric power-assisted steering gear is installed between the operating mechanism and the steering mechanism, does not occupy the space of a cab and is convenient to install and arrange. And the power-assisted torque provided by the electric power-assisted steering gear is negatively related to the rotating speed of the wheels, that is, the power-assisted value provided by the electric power-assisted steering gear is reduced along with the increase ofthe vehicle speed, so that the operation safety is ensured while the convenience in operation is ensured.
本发明公开了一种电动助力转向机构,包括用于操作转向的操作机构以及连接于车轮的转向机构,操作机构与转向机构通过电助力转向器连接;还包括控制器、用于检测车轮转速的车速传感器、以及用于检测操作机构受到的外力扭矩的扭矩传感器,控制器信号连接于电助力转向器、车速传感器以及扭矩传感器;当外力扭矩大于A时,电助力转向器向转向机构提供的助力力矩,且助力力矩与车轮转速负相关。电助力转向器安装在操作机构与转向机构之间,不占用驾驶室空间,便于安装布置。且电助力转向器所提供助力力矩与车轮转速负相关,即电助力转向器所提供的助力值随着车速的提高而降低,在保证操作轻便的同时保证操作的安全性。
Electric power steering mechanism
一种电动助力转向机构
2021-03-12
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
POWER TRANSMISSION MECHANISM AND ELECTRIC POWER STEERING DEVICE
European Patent Office | 2019
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