Electric linear actuator
AssigneeKokusai Keisokuki Kabushiki Kaisha
InventorKazuhiro MURAUCHI
Life of this patent
Estimating the term…
Abstract
An electric linear actuator includes an outer cylinder, an electric motor attached to the outer cylinder, a ball screw configured to convert rotational motion output by the electric motor into linear motion in a predetermined direction, and a ball spline configured to transmit only the linear motion in the predetermined direction, The ball screw includes a screw shaft coupled to a shaft of the electric motor, and a first nut fitted to the screw shaft. The ball spline includes a spline shaft connected to the first nut, and a second nut attached to the outer cylinder and fitted to the spline shaft.
Claims9
An electric linear actuator comprising:
- an outer cylinder;
- an electric motor attached to the outer cylinder;
- a ball screw configured to convert rotational motion output by the electric motor into linear motion in a predetermined direction;
- and
- a ball spline configured to transmit only the linear motion in the predetermined direction, wherein the ball screw includes:
- a screw shaft coupled to a shaft of the electric motor;
- and
- a first nut fitted to the screw shaft, and
- wherein the ball spline includes;
- a spline shaft connected to the first nut;
- and
- a second nut attached to the outer cylinder and fitted to the spline shaft.
Dependencies are inferred from the claim text.