Patent ID: 6078115
Filing Date: 2000-06-20
Classification: B23Q,H02K

Abstract:
An air-cooled motor, comprising:a motor body having a motor shaft in a center thereof,a motor housing having a plurality of air passages extending in a direction of an axis of the motor shaft;an extension tube having a first end fixed to one end of said motor housing and an air-cooling fan mounted on a second end of said extension tube, said extension tube forming an internal space between said motor housing and the air-cooling fan allowing at least a rotary joint and piping to be arranged in the internal space, wherein when the air-cooling fan is rotated, outside air is first drawn into the air passages formed in said motor housing and then flows into said extension tube after passing through the air passages, or the outside air is first drawn into said extension tube and then passes through the air passages formed in said motor housing.