Electronically controlled actuator
AssigneesHitachi, Ltd., Hitachi Car Engineering Co., Ltd.
InventorsMasayuki Suganami, Hiroaki Saeki, Shigeki Yamada
Life of this patent
Estimating the term…
Abstract
An electronically controlled actuator for controlling a turbocharger has a motor, a speed change mechanism and a position sensor contained in a case consisting of a body and a cover. The driving force of the motor is transmitted through the speed change mechanism to an output shaft to drive the movable vanes of a turbocharger for turning. A first bearing supporting the output shaft for rotation is held on the cover, and a second bearing supporting the output shaft for rotation is held on the body. The position sensor is mounted on the output shaft of the motor. The reliability of the actuator is improved.
Claims19
An electric actuator comprising:
- a body;
- a motor held on the body;
- an output shaft;
- a gearing for transmitting the rotation of the output shaft of the motor to the output shaft to drive the output shaft for rotation;
- a bearing held on the body and supporting one end of the output shaft;
- and
- a resin cover fixed to the body so as to cover the motor, the gearing and the other end of the output shaft;
- wherein the resin cover is provided with electric terminals capable of being plugged in and connected to the power supply terminals of the motor and combined therewith by molding, and with a bearing holding part for holding an outer race included in a bearing having an inner race fixedly mounted on the other end of the output shaft, wherein said power supply terminals of said motor and said output shaft for rotation are provided respectively at opposite ends in a longitudinal direction of said motor, and said output shaft for rotation is provided in a direction perpendicular to the rotation shaft of said motor.
A control apparatus for a movable vane of a turbocharger with an electronically controlled actuator, said electronically controlled actuator for driving a driven member for rotation comprising a motor, a speed change gear including an output shaft driven by the motor and capable of driving the driven member, a position sensor, and a case composed of a body and a cover, and housing the motor, the speed change gear and the position sensor,
- further comprising;
- a power supply connector formed on the cover, which supplies power to the motor,
- a bearing held on the cover, which supports one end of the output shaft,
- a rotation extraction part for the output shaft for rotation, held on the body to connect the output shaft for rotation and the driven member for rotation, and
- a fixed bracket is provided at a compressor housing of a turbocharger,
- wherein
- said driven member for rotation is configured as a control mechanism for a movable vane of the turbocharger, and
- said electrically controlled actuator is mounted at the bracket at the side of the compressor housing so that the cover having the connector may be located at the position opposite to the turbine housing of the turbocharger.
An electric actuator for driving a driven member for rotation comprising a motor, a speed change gear including an output shaft driven by the motor and capable of driving the driven member, a position sensor, and a case composed of a body and a cover, and housing the motor, the speed change gear and the position sensor,
- further comprising;
- connecting terminals formed on an inner side of the cover to be plugged in power supply terminals formed on the motor,
- a connector formed outside of the cover by one-piece molding of the cover to connect with the outside, and
- a bearing held on an inner side of the cover, which supports one end of the output shaft for rotation,
- wherein
- mechanical support of said output shaft for rotation and an electrical connection between said power supply connector of the motor and said connector of the cover are established by an assembly comprised of said cover and said body.
Dependencies are inferred from the claim text.