Patent ID: 8020462

Claim:
A ball screw/linear actuator comprising: a motor having a hollow shaft comprising a first hollow shaft section and a second hollow shaft section and a ball screw/nut mechanism comprising a ball screw shaft comprising a main component in which a ball screw is formed and a connection shaft component integrally formed in a coaxial state on a rear end of the main component, the ball screw shaft being connected and fixed coaxially inside the motor hollow shaft, a ball nut of the ball screw/nut mechanism being held in a non-rotating state and able to move in a reciprocatory manner along the ball screw shaft as the ball screw rotates, a rear end section of the main component of the ball screw shaft being inserted coaxially in the first hollow shaft section of the motor, the connection shaft component of the ball screw shaft being inserted coaxially in the second hollow shaft section of the motor, an inside diameter of the first hollow shaft section being sufficient to allow the ball nut to move inside therein and serving as part of a moving passage of the ball nut and a connection shaft section of the ball screw shaft being connected and fixed to the second hollow shaft section.