Brushless motor having capacitors mounted on sidewall of motor housing
AssigneeBlack & Decker Inc.
InventorsMichael Jeffrey Agnes, Garrett Patrick McCormick, Richard Thomas Walter, Christopher Ryan Yahnker
Life of this patent
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Abstract
An electronically commutated brushless motor including a motor housing, a bulge formed in a sidewall of the motor housing, and a capacitor assembly housed in the bulge. The capacitor assembly includes a capacitor printed circuit board (PCB) having a plurality of longitudinal edges and at least one capacitor mounted on the capacitor PCB. The bulge includes a plurality of channels located along an inside surface of a sidewall of the bulge, in which the longitudinal edges of the capacitor assembly are slideably inserted.
Claims37
An electronically commutated brushless motor comprising:
- a motor housing defining a cavity which is configured to at least partially receive a rotor, the motor housing including an integrally formed sidewall having a bulge therein, the bulge defining a hollow area that is offset from the cavity, the hollow area being bounded by the sidewall in a direction radially outwardly of the cavity;
- and
- a capacitor assembly including a printed circuit board and at least one capacitor, said capacitor assembly housed in said bulge and electronically controlling commutation of the electronically commutated brushless motor.
A method for constructing an electronically commutated brushless motor, said method comprising:
- forming a motor housing with a cavity that is configured to at least partially receive a rotor, the motor housing including an integrally formed sidewall having a bulge therein, the bulge defining a hollow area that is offset from the cavity, the hollow area being bounded by the sidewall in a direction radially outwardly of the cavity;
- providing a capacitor assembly;
- and
- slideably inserting the capacitor assembly into the bulge.
An electronically commutated brushless motor comprising:
- a motor housing with a cavity that is configured to at least partially receive a rotor, the motor housing including an integrally formed sidewall and a plurality of capacitor assembly engagement features, the sidewall having a bulge therein, the bulge defining a hollow area that is offset from the cavity, the hollow area being bounded by the sidewall in a direction radially outwardly of the cavity, the capacitor assembly engagement features being integrally formed with the sidewall and being located in a vicinity of the bulge;
- and
- a capacitor assembly slideably inserted in said bulge and engaging the capacitor assembly engagement features.
An electronically commutated brushless motor comprising:
- a motor housing having a sidewall;
- a bulge integrally formed in a sidewall of said motor housing;
- and
- a capacitor assembly including a printed circuit board and at least one capacitor, said capacitor assembly housed entirely in said bulge and adapted to be slidably inserted into said bulge along a path extending generally parallel to a central longitudinal axis of said housing.
An electronically commutated brushless motor comprising:
- a motor housing having a cavity which is shaped to at least partially receive a rotor, the motor housing including an integrally formed sidewall having a bulge therein, the bulge defining a hollow area offset from the cavity;
- a capacitor assembly including a printed circuit board and at least one capacitor, said capacitor assembly being slidably insertable entirely into said hollow area of said bulge and electronically controlling commutation of the electronically commutated brushless;
- and
- wherein said capacitor assembly is substantially entirely encapsulated within said bulge.
An electronically commutated brushless motor comprising:
- a motor housing having a cavity which is shaped to at least partially receive a rotor, the motor housing including an integrally formed sidewall having a bulge therein, the bulge defining a hollow pocket offset from the cavity and with an opening within a plane generally perpendicular to said sidewall;
- and
- a capacitor assembly including a printed circuit board and at least one capacitor for electronically commutating said motor;
- said capacitor assembly being entirely positionable within said hollow pocket through said opening so as to be encapsulated within said hollow packet generally parallel to said sidewall.
Dependencies are inferred from the claim text.