Electric motor and electric motor manufacturing method
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsYOSHIKAZU YAMAGATA, AKIHIKO WATANABE, TAKANORI AMAYA, IKUO OZAKI
Life of this patent
Estimating the term…
Abstract
An electric motor includes: a stator that has a stator core and has coils that are formed of an electric wire wound on the stator core and form a plurality of phases; a resin covering the stator; and a wire break facilitator that facilitates the electric wire to break at a time of abnormality. In the electric motor having the stator in which the coils are covered with molding resin, the wire break facilitator is attached to at least one of: a transition wire part between the coils wound on the stator core; a connection part at a neutral point; and a connection part of a lead wire.
Claims28
An electric motor, comprising:
- a stator including:
- a stator core;
- and coils that are formed of an electric wire wound on the stator core and form a plurality of phases;
- a resin covering the stator;
- and
- a wire break facilitator that facilitates the electric wire to break,
- wherein the wire break facilitator is attached to at least one of:
- a transition wire part between the coils wound on the stator core;
- a connection part at a neutral point of the plurality of phases formed by the coils;
- and a connection part between the electric wire and a lead wire that supplies electric power to the electric wire from outside.
A method for manufacturing an electric motor including:
- a stator including:
- a stator core;
- and coils that are formed of an electric wire wound on the stator core and form a plurality of phases;
- a resin covering the stator;
- and
- a wire break facilitator that facilitates the electric wire to break,
- wherein the wire break facilitator is attached to at least one of:
- a transition wire part between the coils wound on the stator core;
- a connection part at a neutral point of the plurality of phases formed by the coils;
- and a connection part between the electric wire and a lead wire that supplies electric power to the electric wire from outside, and
- a part, of the electric wire, located inside the wire break facilitator has a smaller cross-sectional area than a part, of the electric wire, located outside the wire break facilitator, the method comprising
- forming the part, of the electric wire, inside the wire break facilitator by stretching the part, of the electric wire, inside the wire break facilitator.
A method for manufacturing an electric motor including:
- a stator including:
- a stator core;
- and coils that are formed of an electric wire wound on the stator core and form a plurality of phases;
- a resin covering the stator;
- and
- a wire break facilitator that facilitates the electric wire to break,
- wherein the wire break facilitator is attached to at least one of:
- a transition wire part between the coils wound on the stator core;
- a connection part at a neutral point of the plurality of phases formed by the coils;
- and a connection part between the electric wire and a lead wire that supplies electric power to the electric wire from outside, and
- a part, of the electric wire, located inside the wire break facilitator has a smaller cross-sectional area than a part, of the electric wire, located outside the wire break facilitator, the method comprising
- forming the part, of the electric wire, inside the wire break facilitator by twisting the part, of the electric wire, inside the wire break facilitator.
A method for manufacturing an electric motor including:
- a stator including:
- a stator core;
- and coils that are formed of an electric wire wound on the stator core and form a plurality of phases;
- a resin covering the stator;
- and
- a wire break facilitator that facilitates the electric wire to break,
- wherein the wire break facilitator is attached to at least one of:
- a transition wire part between the coils wound on the stator core;
- a connection part at a neutral point of the plurality of phases formed by the coils;
- and a connection part between the electric wire and a lead wire that supplies electric power to the electric wire from outside, and
- a part, of the electric wire, located inside the wire break facilitator has a smaller cross-sectional area than a part, of the electric wire, located outside the wire break facilitator, the method comprising
- forming the part, of the electric wire, inside the wire break facilitator by bending the part, of the electric wire, inside the wire break facilitator.
Dependencies are inferred from the claim text.