Stator lamination design having a tapered opening
First Claim
Patent Images
1. A stator lamination comprising:
- substantially flat plate means made of a conductive material, said plate having a plurality of notches formed therein; and
each of said notches including an inner wall and two opposing side walls, such that an outer portion of said side walls intersect a periphery of said plate means to form an outwardly tapering opening,further comprising a cutout in said side walls, said cutout being shaped and positioned in oppposing relation to receive a retaining slat therebetween, andsaid side walls adjacent to said cutouts having tapered edges leading to and away from said cutouts, whereby insertion of windings into said notches and removal of windings from said notches is facilitated and damage to insulation on said windings is minimized.
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Accused Products
Abstract
A stator lamination for an electric motor includes a plurality of notches extending about an inner periphery thereof shaped to minimize damage to insulation of the conductor during insertion of the conductor into the notches and removal of the conductor from the notches. Each notch includes two side walls which intersect the inner periphery of the laminate at a tapered angle. The side walls each include a cutout shaped to receive a retaining strip or slat therebetween, and the cutouts intersect the walls at tapered angles. The tapered angles are preferably less than about 12° or greater than about 14°, in order to prevent the formation of a locking taper.
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Citations
7 Claims
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1. A stator lamination comprising:
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substantially flat plate means made of a conductive material, said plate having a plurality of notches formed therein; and each of said notches including an inner wall and two opposing side walls, such that an outer portion of said side walls intersect a periphery of said plate means to form an outwardly tapering opening, further comprising a cutout in said side walls, said cutout being shaped and positioned in oppposing relation to receive a retaining slat therebetween, and said side walls adjacent to said cutouts having tapered edges leading to and away from said cutouts, whereby insertion of windings into said notches and removal of windings from said notches is facilitated and damage to insulation on said windings is minimized. - View Dependent Claims (2, 3, 4, 5)
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6. A stator lamination comprising:
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a substantially flat plate having a central opening therethrough defined by an inner periphery; a plurality of notches extending radially outwardly from, and being spaced about, said inner periphery; each of said notches including an inner wall and two substantially parallel opposing side walls, an outer portion of said side walls intersecting a tapered wall which in turn intersects a periphery of said plate to form an outwardly tapering opening communicating with said central opening, said substantially parallel side walls each including a cutout, said cutouts being shaped and positioned in opposing relation to receive a retaining slat therebetween, and segments of said side walls adjacent to said cutouts are angled to form tapers opening to said cutouts, said outwardly tapering opening and said cutout tapers each forming an angle whereby insertion of windings into said notches and removal of windings from said notches is facilitated without said windings binding or being jammed against said cutouts or said outer portion, and damage to insulation resulting from catching on a juncture of said side walls with said inner periphery and on a juncture of said cutouts with said side walls is minimized. - View Dependent Claims (7)
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Specification