Electric power steering device and torque transmission device thereof

• Main Authors: HUANG LIANGLIANG, ZHU SHENGFENG, WAN MINWEI, REN PEI, ZHU XINGWANG, ZHU ZHONGMING
• Format: Patent
• Language: Chinese; English
• Published: 11.12.2020
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; LIGHTING; MECHANICAL ENGINEERING; MOTOR VEHICLES; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRAILERS; TRANSPORTING; WEAPONS

The invention relates to the technical field of power transmission, and discloses an electric power steering device and a torque transmission device thereof. The electric power steering device comprises a lead screw, a first bearing and a worm gear, the lead screw comprises a screw section and a first smooth section arranged at one end of the screw section, and the first smooth section is sleevedwith the first bearing and the worm gear; one end of the worm gear is matched with the first bearing, and the other end of the worm gear abuts against a shaft shoulder, connected with the first smoothsection, of the screw section; one end of the worm gear is matched with the first bearing, and the other end of the worm gear abuts against the shaft shoulder, connected with the first smooth section, of the screw section, so that the worm gear is fixed between the first bearing and the screw section; when the worm gear is meshed with the worm, the worm gear is not prone to slipping and has larger transmission torque; and