Patent ID: 8555747
Filing Date: 2013-10-15
Classification: F16H,Y10T

Abstract:
1. A spur-gear mechanism, comprising: a drive shaft for transmitting a driving power from a motor, said drive shaft defining an axis; a split housing surrounding transmission stages of the spur-gear mechanism and including an upper housing portion and a lower housing portion; an axial fan wheel fixedly disposed on said drive shaft and drawing air axially from the motor to force the drawn air to flow in a direction of the axis through the split housing in substantial parallel relationship to the drive shaft; a split spacer flange formed in one piece with the upper and lower housing portions, respectively, and including first openings extending at a slant to outwardly direct a flow of air drawn in by the axial fan from the motor to flow across inclined outer base surfaces of the housing; first cooling ribs disposed on side surfaces of the housing in flow communication with second openings of the spacer flange and bent inwards towards the second openings; second cooling ribs disposed on the base surfaces of the housing in flow communication with the first openings of the spacer flange and bent inwards towards the first openings; and reinforcing ribs formed on the spacer flange between the first and second openings.