Linear actuator of the screw-nut type
AssigneeSociete Industrielle de Sonceboz S.A.
InventorJean-Francois Pfister
Life of this patent
Estimating the term…
Abstract
A linear actuator (1) comprising a housing (6), a motor (2) comprising a stator with coils (4), a screw-nut system, and a rotor (5) axially and radially supported on the motor side by a bearing (11). The bearing comprises a ball (14) rigidly attached to the rotor, a cylindrical cavity (15) formed or positioned in the housing into which the ball (14) is inserted. A stop (17) is positioned in the cavity, supported in an axial direction of the rotor, against the ball (14) in essentially one point.
Claims19
A linear actuator comprising a housing, a motor comprising a stator, a screw-nut system, and a rotor axially and radially supported on a motor side by a bearing, the bearing comprising a ball rigidly attached to one end of the rotor, a bearing cavity formed or positioned in the housing into which the ball is inserted, and an axial stop positioned in the bearing cavity in abutment at essentially one point against the ball in an axial direction of the rotor.
Automobile headlight adjustment actuator, comprising a linear actuator, the linear actuator comprising a housing, a motor comprising a stator, a screw-nut system, and a rotor axially and radially supported on a motor side by a bearing, the bearing comprising a ball rigidly attached to one end of the rotor, a bearing cavity formed or positioned in the housing into which the ball is inserted, and an axial stop positioned in the bearing cavity in abutment at essentially one point against the ball in an axial direction of the rotor.
A linear actuator comprising a housing, a motor comprising a stator, a screw-nut system, and a rotor axially and radially supported on a motor side by a bearing, the bearing comprising a ball rigidly attached to one end of the rotor, a bearing cavity formed or positioned in the housing into which the ball is inserted, and an axial stop positioned in the bearing cavity in abutment at essentially one point against the ball in an axial direction of the rotor, the actuator further including a second bearing comprising a second ball integral with or attached to an end of a screw portion of the screw-nut system, a cavity into which the ball is inserted, and a second axial stop positioned in the second bearing cavity in abutment at essentially one point against the second ball in an axial direction of the rotor.
Dependencies are inferred from the claim text.