JP2005180507A5 - - Google Patents

Claims (4)

A housing;
An electric motor attached to the housing;
A rotating element connected to a rotating shaft of the electric motor, an axial moving element connected to a driven member, and a rolling element disposed between the rotating element and the axial moving element, A ball screw mechanism for converting the rotational movement of the rotary element into the axial movement of the axial movement element;
A position sensor that detects the position by contacting the axial movement element;
The automatic transmission actuator according to claim 1, wherein the detection unit of the position sensor is disposed radially inward of the axial movement element. A housing;
An electric motor attached to the housing;
A rotating element connected to a rotating shaft of the electric motor, an axial moving element connected to a driven member, and a rolling element disposed between the rotating element and the axial moving element, A ball screw mechanism for converting the rotational movement of the rotary element into the axial movement of the axial movement element;
A movement amount sensor for detecting a movement amount of the axial movement element;
The axial direction moving element has a female threaded portion, the movement amount sensor has an engaging portion that engages with the female threaded portion, and the axial direction moving element of the axial direction moving element depends on a rotation angle of the engaging portion. An actuator for an automatic transmission characterized by detecting a movement amount. A housing;
An electric motor attached to the housing;
A worm mechanism including a worm gear coupled to a rotating shaft of the electric motor, and a worm wheel that is a magnetic body meshing with the worm gear;
A ball screw mechanism comprising: a rotating element coupled to the worm wheel; an axial moving element coupled to a driven member; and a rolling element disposed between the rotating element and the axial moving element; ,
A movement amount sensor for detecting a movement amount of the axial movement element;
The movement amount sensor is disposed adjacent to the worm wheel and detects passage of teeth of the worm wheel.   A housing;
  An electric motor attached to the housing;
  A rotating element connected to a rotating shaft of the electric motor, an axial moving element connected to a driven member, and a rolling element disposed between the rotating element and the axial moving element, A ball screw mechanism for converting the rotational movement of the rotary element into the axial movement of the axial movement element;
  A position sensor that detects the position by contacting the axial movement element;
  The automatic transmission actuator according to claim 1, wherein the detection unit of the position sensor is pushed by contact with a radial direction surface of the axial movement element, and thereby a signal is output from the position sensor.