Stator, motor and compressor
First Claim
1. A stator comprising:
- a stator core having a plurality of tooth portions arrayed circumferentially with intervals therebetween;
an insulator fitted to each of axial end faces of the stator core;
a coil wound on the tooth portions of the stator core, the insulator being interposed between the stator core and the coil;
a slot insulator placed within each of slot portions that are spaces between circumferentially neighboring ones of the tooth portions, the slot insulator being interposed between the stator core and the coil; and
an inter-coil insulator including a first inter-coil insertion portion and a second inter-coil insertion portion placed between circumferentially mutually neighboring windings of the coil, and a folding-bottom portion connecting the first inter-coil insertion portion and the second inter-coil insertion portion with the first inter-coil insertion portion extending from a first end of the folding-bottom portion and the second inter-coil insertion portion extending from a second end of the folding-bottom portion,the inter-coil insulator being sheet shaped and folded over a width equal to double a sheet thickness at the folding-bottom portion extending along an axial direction,the folding-bottom portion being positioned on a distal end side of the tooth portions; and
movement of the folding-bottom portion in a radial direction toward the rotor is restricted byextending portions of the stator core extending on a distal end side of the tooth portions orextending portions of the slot insulator extending on the distal end side of the tooth portions.
1 Assignment
0 Petitions
Accused Products
Abstract
A stator for a motor of a compressor includes a stator core, insulator, coil, slot insulator, and inter-coil insulator. The stator core has a plurality of tooth portions arrayed circumferentially. The insulator is fitted to axial end faces of the stator core. The coil is wound on the tooth portions. The slot insulator is placed within slot portions that are spaces between circumferentially neighboring ones of the tooth portions, and which are interposed between the stator core and the coil. The inter-coil insulator is placed between circumferentially mutually neighboring windings of the coil. The inter-coil insulator is sheet shaped and folded over a width equal to double a sheet thickness at a folding-bottom portion extending along an axial direction. The folding-bottom portion is positioned on a distal end side of the tooth portions. Movement of the folding-bottom portion in a radial direction toward the rotor is restricted.
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Citations
15 Claims
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1. A stator comprising:
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a stator core having a plurality of tooth portions arrayed circumferentially with intervals therebetween; an insulator fitted to each of axial end faces of the stator core; a coil wound on the tooth portions of the stator core, the insulator being interposed between the stator core and the coil; a slot insulator placed within each of slot portions that are spaces between circumferentially neighboring ones of the tooth portions, the slot insulator being interposed between the stator core and the coil; and an inter-coil insulator including a first inter-coil insertion portion and a second inter-coil insertion portion placed between circumferentially mutually neighboring windings of the coil, and a folding-bottom portion connecting the first inter-coil insertion portion and the second inter-coil insertion portion with the first inter-coil insertion portion extending from a first end of the folding-bottom portion and the second inter-coil insertion portion extending from a second end of the folding-bottom portion, the inter-coil insulator being sheet shaped and folded over a width equal to double a sheet thickness at the folding-bottom portion extending along an axial direction, the folding-bottom portion being positioned on a distal end side of the tooth portions; and movement of the folding-bottom portion in a radial direction toward the rotor is restricted by extending portions of the stator core extending on a distal end side of the tooth portions or extending portions of the slot insulator extending on the distal end side of the tooth portions. - View Dependent Claims (2, 3, 4, 8, 9, 10, 11)
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5. A stator comprising:
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a stator core having a plurality of tooth portions arrayed circumferentially with intervals therebetween; an insulator fitted to each of axial end faces of the stator core; a coil wound on the tooth portions of the stator core, the insulator being interposed between the stator core and the coil; a slot insulator placed within each of slot portions that are spaces between circumferentially neighboring ones of the tooth portions, the slot insulator being interposed between the stator core and the coil; and an inter-coil insulator placed between circumferentially mutually neighboring windings of the coil, the inter-coil insulator being folded at a folding-bottom portion extending along an axial direction, the folding-bottom portion being positioned on a distal end side of the tooth portions, movement of the folding-bottom portion in a radial direction toward the rotor is restricted by extending portions of the stator core extending on a distal end side of the tooth portions or extending portions of the slot insulator extending on the distal end side of the tooth portions, and the inter-coil insulator having, in at least one of a pair of axial end portions thereof, an engaging portion provided protruded radially on one side opposite to a rotor side so as to be engaged with the insulator. - View Dependent Claims (6, 7, 12, 13, 14, 15)
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Specification