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US 2007/0176511 A1Published application
Motor and a fuel pump using the same
AssigneeDenso Corporation
InventorsHiromi Sakai, Kiyoshi Nagata
Life of this patent
Estimating the term…
Abstract
A motor includes a stator core, insulators, coils and a rotor. The stator core includes a plurality of coil cores, which are circumferentially arranged, wherein each of the plurality of coil cores includes a tooth that radially extends, and an outer peripheral core that circumferentially extends at a radially outer side of the tooth. Each of the insulators covers a corresponding one of the plurality of coil cores, wherein a part of each of the insulator is provided radially outward of an imaginary straight line, which connects circumferential ends of an inner peripheral surface of the outer peripheral core. Each of the coils is formed at the insulator. The rotor is rotatably provided to an inner peripheral side of the stator core.
Claims10
A motor comprising:
- a stator core that includes a plurality of coil cores, which are circumferentially arranged, wherein each of the plurality of coil cores includes:
- a tooth that radially extends;
- and
- an outer peripheral core that circumferentially extends at a radially outer side of the tooth;
- insulators, each of which covers a corresponding one of the plurality of coil cores, wherein a part of each of the insulator is provided radially outward of an imaginary straight line, which connects circumferential ends of an inner peripheral surface of the outer peripheral core;
- coils, each of which is formed by winding a winding wire at an outer periphery of a corresponding one of the insulators, wherein a magnetic pole, which is circumferentially formed at a radially inner side of each of the plurality of coil cores, is switched when energization of a corresponding one of the coils is controlled;
- and
- a rotor that is rotatably provided to an inner peripheral side of the stator core, wherein:
- different magnetic poles are alternately arranged in a rotational direction on an outer peripheral surface of the rotor;
- and
- the outer peripheral surface of the rotor faces the stator core.
8 more elements
A motor comprising:
- a stator core that includes a plurality of coil cores, which are circumferentially arranged, wherein:
- each of the plurality of coil cores includes:
- a tooth that radially extends;
- and
- an outer peripheral core that circumferentially extends at a radially outer side of the tooth;
- and
- circumferential ends of an inner peripheral surface of the outer peripheral core are more tilted radially inwardly relative to an imaginary straight line that connects the circumferential ends of the inner peripheral surface of the outer peripheral core as the circumferential ends approach circumferentially adjacently arranged coil cores;
- insulators, each of which covers a corresponding one of the plurality of coil cores, wherein an outer peripheral core side of a coil winding surface of each of the insulators extends generally along the imaginary straight line;
- coils, each of which is wound on a corresponding one of the insulators;
- and
- a rotor that is rotatably provided to an inner peripheral side of the stator core, wherein:
- different magnetic poles are alternately arranged in a rotational direction on an outer peripheral surface of the rotor;
- and
- the outer peripheral surface of the rotor faces the stator core.
11 more elements
A motor comprising:
- a stator core that includes a plurality of coil cores that are circumferentially arranged, wherein:
- each of the plurality of coil cores includes:
- a tooth that radially extends;
- and
- an outer peripheral core that circumferentially extends at a radially outer side of the tooth;
- and
- a tooth side of an inner peripheral surface of the outer peripheral core is recessed radially outwardly relative to an imaginary straight line that connects the circumferential ends of the inner peripheral surfaces of the outer peripheral core as the circumferential ends approach circumferentially adjacently arranged coil cores;
- insulators, each of which covers a corresponding one of the plurality of coil cores, wherein an outer peripheral core side of a coil winding surface of each of the insulators extends generally along the imaginary straight line;
- coils, each of which is wound on a corresponding one of the insulators;
- and
- a rotor that is rotatably provided to an inner peripheral side of the stator core, wherein:
- different magnetic poles are alternately arranged in a rotational direction on an outer peripheral surface of the rotor;
- and
- the outer peripheral surface of the rotor faces the stator core.
11 more elements
Dependencies are inferred from the claim text.