ELECTRIC MOTOR ASSEMBLY AND MANUFACTURING METHOD THEREOF

摘要

Provided are, an electric motor assembly capable of preventing a sealant from leakage through a lead-wire drawing portion, and an electric motor manufacturing method with use of the electric motor assembly. The electric motor assembly includes a rotor (12), a stator (13), a casing (14), a partition wall (21) with through-holes (22), plugs (23) made of a highly elastic material and including a tapered outer peripheral surface to be fitted into the through-holes (22), and lead wires (25) connected to the stator (13). The plugs (23) surround lead-wire insertion holes (24). A sealant (20) is injected into the casing (14) in a state that the lead wires (25) are drawn through the lead-wire insertion holes (24). The injection pressure presses the plugs (23) outwardly to bring the outer peripheral surfaces of the plugs (23) into close contact with the inner peripheral surface surrounding the through-holes (22) and elastically deforms the plugs (23) in a diameter-reduction direction to cause the plugs (23) to close the lead-wire insertion holes (24).