THIN-TYPE GEAR MOTOR AND MUSCLE FORCE ASSISTING DEVICE USING THIN-TYPE GEAR MOTOR

摘要

In a thin-type gear motor and a muscle force assisting device that uses the thin-type gear motor in which high torque output is achieved, thinness and size and weight reduction are achieved, and further size reduction is achieved by an absolute sensor that is capable of detecting a rotation angle of an output shaft after speed reduction and is situated in a space that is conventionally not used.

主权项

1. A thin-type gear motor comprising:
an outer-rotor motor; a planetary gear housing case in which an encoder housing chamber is formed that enters a free space present in a center portion of a rotor of the outer-rotor motor; a reduction mechanism that is rotatably provided within the planetary gear housing case, and that reduces the speed of rotation of a shaft of the motor positioned within the planetary gear housing case using planetary gears and transmits the speed-reduced rotation to an output shaft; a rotation position information recording member that is provided in a section of the reduction mechanism corresponding to the encoder housing chamber of the planetary gear housing case and provides an absolute sensor with position information; and the absolute sensor that is provided within the encoder housing chamber of the planetary gear housing case and detects a rotation angle of an output shaft of the reduction mechanism after speed reduction based on the information from the rotation position information recording member.