VALVE TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

摘要

A valve timing control apparatus for an internal combustion engine includes: a power feeding brush including a tip end portion arranged to be slidably abutted on the slip ring; and a rotation angle sensing mechanism provided between one end portion of the motor output shaft, and the cover member confronting the one end portion of the motor output shaft, and arranged to sense a rotation angle of the motor output shaft, the power feeding brush being disposed in a range in which the power feeding brush is slid on the slip ring, in a range from a position which is deviated a predetermined angle in a rotation direction of the motor housing from an uppermost position of the other of the electric motor and the cover member in a vertical direction, to a lowermost position.

主权项

1. A valve timing control apparatus for an internal combustion engine comprising:
a first member to which a rotational force is transmitted from a crank shaft; a second member which is arranged to be rotated relative to the first member, and to rotate as a unit with a cam shaft; an electric motor which includes a motor housing that is provided to the first member to rotate as a unit with the first member, and a motor output shaft, and which is arranged to rotate the second member relative to the first member by the motor output shaft; a cover member which is disposed on an outer end surface of the electric motor to confront the outer end surface of the electric motor in an axial direction; a slip ring which has an annular shape, which is provided to one of the electric motor and the cover member, and which is provided coaxially with the motor output shaft; a power feeding brush which is provided to the other of the electric motor and the cover member, and which includes a tip end portion arranged to be slidably abutted on the slip ring; and a rotation angle sensing mechanism which is provided between one end portion of the motor output shaft, and the cover member confronting the one end portion of the motor output shaft, and which is arranged to sense a rotation angle of the motor output shaft, the power feeding brush being disposed in a range in which the power feeding brush is slid on the slip ring, in a range from a position which is deviated a predetermined angle in a rotation direction of the motor housing from an uppermost position of the other of the electric motor and the cover member in a vertical direction, to a lowermost position.