초록 ▼

A linear actuator comprises a ball screw carrying an axially restrained rotatable ball nut driven by an electrically energized motor. An enclosing motor housing has front and rear walls with axially aligned openings for passing the ball screw. The motor has a radially inner hollow stator assembly an

A linear actuator comprises a ball screw carrying an axially restrained rotatable ball nut driven by an electrically energized motor. An enclosing motor housing has front and rear walls with axially aligned openings for passing the ball screw. The motor has a radially inner hollow stator assembly and a generally concentric radially outer rotor assembly. A can member is integrated with the rotor assembly to rotate therewith and has a radial end wall connected to the nut.

대표청구항 ▼

1. A linear actuator with a ball screw carrying a nut driven by an electrically energized motor, there being helical grooves and lands formed in said nut and screw to provide a helical ball raceway in which balls circulate, said actuator comprising:a. an enclosing motor housing with front and rear w

1. A linear actuator with a ball screw carrying a nut driven by an electrically energized motor, there being helical grooves and lands formed in said nut and screw to provide a helical ball raceway in which balls circulate, said actuator comprising:a. an enclosing motor housing with front and rear walls having axially aligned openings for freely passing the ball screw to extend in both directions; b. an outside spin electric motor integrated with said housing and including a radially inner hollow stator assembly and a generally concentric radially outer rotor assembly; c. a ball nut carried within said motor housing on said screw in a manner to prevent its axial travel while permitting its rotation; and d. a can member enclosure integrated with the rotor assembly to rotate therewith having a radially inwardly extending wall connected to the nut.