A motor vehicle lifting jack has an electric motor powered from the vehicle driving a threaded shaft to operate a scissor movement lifting action

摘要

The jack has a foot (24) and vehicle connection platform (21) joined by scissor arm pairs (15,30) whose knuckles are connected to a threaded shaft (17) driven by a reduction gearbox (20) and electric motor (100) connected to the vehicle (19) electrical supply. Switches (23,25) control the extreme positions.