Methods and apparatus for securing an endshield to an electric motor

An electric motor assembly comprising:

• a motor housing;
• a stator comprising a stack of laminations, a first and second ends, and a bore therethrough, said stator mounted in said motor housing;
• a rotor core rotatably mounted in said motor housing and extending through said stator bore;
• a rotor shaft extending through said rotor core;
• and
• at least one endshield assembly, each endshield assembly comprising an endshield comprising a body, an inner face facing said stack, and an outer face;
• at least one anchor extending from said endshield inner face towards said stack, said anchor comprising an end, a head, and an expandable shank extending therebetween, said shank comprising a wall and a bore, said bore extending between said end and said head, said wall defining said bore and extending convergently from said head to said leading end;
• and
• a fastener configured to expand said anchor wall to secure said endshield to the motor.

A method of securing an endshield assembly to an electric motor, said method comprising:

• providing an endshield assembly including an endshield having a body, an inner face, an outer face, and at least one anchor extending radially outward from the inner face, the anchor including an end, a head, and an expandable shank extending therebetween, the shank having a wall and a bore, the bore extending between the end and the head, the wall defining the bore and extending convergently from the head to the end;
• positioning the endshield assembly in contact with the motor;
• and
• inserting a fastener into the shank bore, the fastener configured to expand the anchor wall to secure the endshield to the motor.