| 摘要 |
A linear actuator comprising a motor adapted to axially rotate a rotor shaft in alternating directions, the motor having a stator positioned co-axially around the rotor shaft with the rotor shaft being co-axially coupled to a drive mechanism to convert axial rotation of the rotor shaft into reciprocal displacement of the drive mechanism, the drive mechanism having opposed ends, one end coupled to a piston arranged within a cylinder to define a pumping chamber between the piston and the cylinder, wherein alternating rotation of the rotor shaft causes reciprocal linear displacement of the piston within the pumping chamber, and the linear displacement of the drive mechanism operates a lubrication system within the linear actuator. |
