Motor for electric power steering and method for manufacturing the same
First Claim
Patent Images
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.
23 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