A reflective optical encoder (40) assembly includes a motor and brake assembly at least partially in a motor and brake housing (42). An encoder housing is at least partially received in a cavity (34) of the motor and brake housing. The reflective optical encoder includes an encoder disk (50) and an encoder shaft (44) that rotate with a shaft of the motor. The assembly includes holes (54, 56, 58) in the encoder disk. A seal (80) at an interface between the encoder housing and the encoder shaft to prevent contaminants from the cavity from entering the encoder housing and a packing inside the encoder housing. A packing (84) is situated to prevent any dust or debris associated with the encoder shaft rotating relative to the seal from getting on the encoder disk.
Reflective optical encoder with contaminant protection
2019-08-27
Patent
Elektronische Ressource
Englisch