Motor for electric power steering and method for manufacturing the same
First Claim
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1. An electric power steering motor having a stator, and a rotor rotatably supported and disposed opposite to said stator with a gap left therebetween;
- wherein said stator comprises;
a stator core;
multi-phase stator coils assembled in said stator core; and
a wiring component electrically connected to said stator coils and supplied with electric power from an exterior, said wiring component comprising a first wiring member for connecting said stator coils per phase, and a second wiring member supplied with electric power from the exterior;
whereinsaid first wiring member comprises a plurality of flat plate conductors;
said second wiring member comprises a plurality of flat plate conductors;
said first wiring member and said second wiring member are stacked in an axial direction of the motor, and are electrically connected to each other, thereby forming a wiring connecting portion in an axially stacked multi-layered structure;
said first wiring member comprises,an annular base formed of an insulating member; and
a plurality of flat plate conductors connecting said stator coils per phase and fitted into said annular base; and
said plurality of flat plate conductors have the same shape and comprise,a first circular-arc conductor disposed in an inner peripheral portion of said annular base;
a second circular-arc conductor disposed in an outer peripheral portion of said annular base; and
a connecting conductor connecting one end of said second circular-arc conductor and one end of said first circular-arc conductor to each other, said first circular-arc conductor and said second circular-arc conductor for different phases being disposed in said annular base in radially opposed relation.
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Abstract
A small-sized motor for electric power steering, in which coil connection can be easily performed with space saving, and a method for manufacturing the motor. Multi-phase stator coils assembled in a stator coil are connected per phase by connecting rings at coil ends of the stator coils. A bus bar supplied with electric power from the exterior is stacked onto the connecting rings in the axial direction of the motor and is electrically connected to the connecting rings.
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Citations
8 Claims
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1. An electric power steering motor having a stator, and a rotor rotatably supported and disposed opposite to said stator with a gap left therebetween;
- wherein said stator comprises;
a stator core; multi-phase stator coils assembled in said stator core; and a wiring component electrically connected to said stator coils and supplied with electric power from an exterior, said wiring component comprising a first wiring member for connecting said stator coils per phase, and a second wiring member supplied with electric power from the exterior;
whereinsaid first wiring member comprises a plurality of flat plate conductors; said second wiring member comprises a plurality of flat plate conductors; said first wiring member and said second wiring member are stacked in an axial direction of the motor, and are electrically connected to each other, thereby forming a wiring connecting portion in an axially stacked multi-layered structure; said first wiring member comprises, an annular base formed of an insulating member; and a plurality of flat plate conductors connecting said stator coils per phase and fitted into said annular base; and said plurality of flat plate conductors have the same shape and comprise, a first circular-arc conductor disposed in an inner peripheral portion of said annular base; a second circular-arc conductor disposed in an outer peripheral portion of said annular base; and a connecting conductor connecting one end of said second circular-arc conductor and one end of said first circular-arc conductor to each other, said first circular-arc conductor and said second circular-arc conductor for different phases being disposed in said annular base in radially opposed relation. - View Dependent Claims (2, 3, 4, 5, 6)
- wherein said stator comprises;
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7. An electric power steering motor having a stator, and a rotor rotatably supported and disposed opposite to said stator with a gap left therebetween;
- wherein said stator comprises;
a stator core; multi-phase stator coils assembled in said stator core; and a wiring component electrically connected to said stator coils and supplied with electric power from an exterior, said wiring component comprising a first wiring member for connecting said stator coils per phase, and a second wiring member supplied with electric power from the exterior;
whereinsaid first wiring member comprises a plurality of flat plate conductors; said second wiring member comprises a plurality of flat plate conductors; said first wiring member and said second wiring member are stacked in an axial direction of the motor, and are electrically connected to each other, thereby forming a wiring connecting portion in an axially stacked multi-layered structure; each of said flat plate conductors of said first wiring member includes an axially extending projection; each of said flat plate conductors of said second wiring member includes an axially extending projection; and in an assembled state of said motor, each of said projections of said first wiring member is in electrical contact with a corresponding one of said projections of said second wiring member, whereby said first wiring member and said second wiring member are electrically connected to each other. - View Dependent Claims (8)
- wherein said stator comprises;
Specification