Stator and motor
AssigneeDaikin Industries, Ltd.
InventorAkinobu ISHIZAKI
Life of this patent
Estimating the term…
Abstract
A stator includes a stator core and an insulator installed on an axial-direction end surface of the stator core. The stator core has a cylindrical part, a plurality of teeth, and a plurality of windings. The windings are wound around the teeth. Each winding has a first end and a second end. The insulator has a plurality winding grooves to support the second ends. Each winding groove has a first space and a second space. The first space includes an opening. The second space includes a tip part to catch the second end, and communicate with the first space via a bent part.
Claims21
A stator comprising:
- a cylindrical stator core;
- and
- an insulator installed on an axial-direction end surface of the stator core,
- the stator core having
- a cylindrical part,
- a plurality of teeth protruding from an inner circumferential surface of the cylindrical part toward a radially inner side of the cylindrical part, and disposed along a circumferential direction of the cylindrical part, and
- a plurality of windings wound around the plurality of teeth, respectively,
- each winding having
- a first end that is a winding start part around a respective tooth of the plurality of teeth, and
- a second end that is a winding end part around the respective tooth,
- the insulator having a plurality of winding grooves configured to support the second ends of the plurality of windings,
- each of the winding grooves supporting the second end of one of the plurality of windings, with each winding groove having
- a first space including an opening, and
- a second space including a tip part configured to catch the second end of one of the plurality of windings, and communicating with the first space via a bent part,
- the opening being formed on an axial-direction end surface of the insulator that is not in contact with the stator core,
- the windings being wound around the teeth such that the second ends exit from radially inner sides of the teeth, and
- a number of the winding grooves beingequal to a number of the second ends.
(canceled)
A method of manufacturing a stator including a cylindrical stator core and an insulator installed on an axial-direction end surface of the stator core, the method comprising:
- a winding step in which a plurality of windings are simultaneously wound around a plurality of teeth of the stator core;
- a catching step in which a second end of each winding, which is a winding end part around a respective tooth of the plurality of teeth, is caught in a tip part of a winding groove of a plurality of winding grooves of the insulator and supported;
- and
- a connecting step in which a first end of each winding, which is a winding start part around the respective tooth, is connected, and the second ends are connected,
- the plurality of teeth protruding from an inner circumferential surface of a cylindrical part of the stator core toward a radially inner side of the cylindrical part, and being disposed along a circumferential direction of the cylindrical part,
- each of the winding grooves supporting the second end of one of the windings wound around each of the plurality of teeth, each winding groove having
- a first space including an opening;
- and
- a second space including the tip part, and communicating with the first space via a bent part,
- the opening being formed on an axial-direction end surface of the insulator that is not in contact with the stator core,
- the windings being wound around the teeth such that the second ends exit from radially inner sides of the teeth, and
- a number of the winding grooves being equal to a number of the second ends.
Dependencies are inferred from the claim text.