External rotor motor for fan e.g. for cooling computer processors, has bearing carrier tube carrying outside rotor on its inside and inside stator on its outside and safety disk protruding into recess of inside stator

摘要

The external rotor motor includes an inside stator with a laminated core (23) and a recess (36). A bearing carrier tube carries the outside rotor on its inside and the inside stator on its outside. A safety disk (20) is provided in the coating of the laminated core and protrudes into the recess of the inside stator with sections (34) of its inside circumference (48). The safety ring engages into the outside of the bearing carrier tube with these sections. An independent claim is included for a small sized fan using the motor.