Patent ID: 8841808

Claim:
A heat-dissipation structure for a motor, the heat-dissipation structure comprising: a) a motor shell, said motor shell comprising a front end cover, a columnar shell, a rear end cover having a bottom, a first plurality of air vents, and a ventilation slot; b) a control box for accommodating a circuit board, said control box having a top; and c) a coupling shell, said coupling shell comprising a second plurality of air vents and a coupling shell cavity; wherein: said first plurality of air vents is arranged on said columnar shell; a convex plate is arranged on the bottom of said rear end cover; said ventilation slot is disposed on said rear end cover; the top of said control box is open; a step is arranged along an edge of the top of said control box; said second plurality of air vents is arranged on a side wall of said coupling shell; one end of said coupling shell is fixedly sheathed with said convex plate, wherein said coupling shell is fixedly connected to said motor shell; the other end of said coupling shell is fixedly sheathed on said step, wherein said coupling shell is fixedly connected to said control box; a block is disposed on said edge; said block is embedded in a slot of said coupling shell; and when in use, air passes through the heat-dissipation structure via said first plurality of air vents and said second plurality of air vents.