compact actuator

Abstract

A compact actuator includes a motor mounted in a housing, a speed reducer connected to the motor, an angle sensing group that detects the rotation angle output by the speed reducer and generates an angle signal, and a drive controller that receives the angle signal and controls the rotation angle; wherein the speed reducer includes an annular gear ring that provides a guiding function, and the annular gear ring is integrally formed from an inner wall portion of the housing, thereby reducing the size and weight of the actuator.

Claims

1. A compact actuator, mounted within a housing, comprising: One motor; A speed reducer unit is connected to the motor and outputs a rotation angle; An angle sensing group is used to detect the rotation angle and generate an angle signal; and a drive controller is electrically connected to the angle sensing group and the motor to receive the angle signal and control the motor to output the rotation angle via the reducer group; wherein, the housing is assembled from multiple compartments, the multiple compartments including a control compartment for mounting the drive controller, a motor compartment for configuring the motor, and a planetary gear compartment and a reduction gear pair compartment for jointly configuring the reducer group; the motor compartment is located between the control compartment and the planetary gear compartment, the planetary gear compartment is located between the motor compartment and the reduction gear pair compartment, and the motor compartment and the planetary gear compartment also jointly enclose a connecting compartment, so that the angle sensing group is exposed in the connecting compartment, and the drive controller is electrically connected to the angle sensing group and the motor via the connecting compartment; The reducer assembly includes an annular gear ring and an output shaft. The reducer assembly outputs the rotation angle via the output shaft through the annular gear ring. The annular gear ring is integrally formed from an inner wall portion of the housing, and the inner wall portion is located within the planetary gear compartment.

2. The compact actuator as claimed in claim 1, wherein the reducer assembly includes at least one planetary gear pair and a medium-speed reduction gear pair drivingly connected to the planetary gear pair, and the output shaft outputs the rotation angle via the reduction drive of the planetary gear pair and the medium-speed reduction gear pair in sequence.

3. The compact actuator as claimed in claim 2, wherein the reducer further includes a final reduction gear pair that is drive-connected to the intermediate reduction gear pair, the output shaft is integrally formed by the final reduction gear pair, and the output shaft outputs the rotation angle in sequence via the reduction transmission of the planetary gear pair, the intermediate reduction gear pair and the final reduction gear pair.

4. The compact actuator as claimed in claim 3, wherein the intermediate reduction gear pair and the final reduction gear pair are composed of parallel axles.

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