Stator of rotary electric machine and method of manufacturing the same
AssigneeToyota Jidosha Kabushiki Kaisha
InventorKeiichi Kaneshige
Life of this patent
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Abstract
A stator of a rotary electric machine in which a power line to be connected to a coil can be fixed stably without requiring an additional part. The stator of a rotary electric machine has a stator core which has a plurality of radially protruded teeth at intervals in a circumferential direction; three-phase coils which are wound around the teeth and which each have a coil end protruding from an axial end face of the stator core; power lines which are respectively connected to three input-side ends of the three-phase coils via a joint part; and a resin mold which integrally fixes the coil end and the joint part.
Claims9
A stator of a rotary electric machine, comprising:
- a stator core which has a plurality of radially protruded teeth at intervals in a circumferential direction;
- three-phase coils which are wound around the teeth and which each have a coil end protruding from an axial end face of the stator core;
- power lines which are respectively connected to three input-side ends of the three-phase coils via respective joint parts;
- and
- a resin mold which integrally fixes the coil end and the joint parts;
- wherein
- each of the three input side ends includes a radial portion which extends outward radially from the inner circumference side of the stator core, and an axial portion which extends in a direction away from the axial end face of the stator core,
- the axial portion and a power line extending along the axial portion are connected at the joint part, and
- the radial portion is located away from the resin mold.
A manufacturing method of a stator of a rotary electric machine comprising the steps of:
- preparing a stator core having a plurality of teeth;
- winding a coil around the stator core;
- joining a power line to an input-side end of the coil;
- and
- molding to form a resin mold for integrally fixing a coil end protruding from an axial end face of the stator core in the coil and a joint part of the input-side end of the coil and the power line;
- wherein:
- the molding step is performed by downwardly immersing the coil end and the joint part into a resin material stored in a mold groove;
- each of the three input side ends includes a radial portion which extends outward radially from the inner circumference side of the stator core, and an axial portion which extends in a direction away from the axial end face of the stator core,
- the axial portion and a power line extending along the axial portion are connected at the joint part, and
- the radial portion is located away from the resin mold.
Dependencies are inferred from the claim text.