Method for connecting armature coil to commutator segment
First Claim
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1. A method for connecting armature coils to commutator segments the method comprising the steps of:
- forming a stepped portion to prevent axial escapement of said armature coils at a bottom of a slot formed in each of said commutator segments,inserting portions of said armature coils into the slot,pressing inserted portions of said armature coils to plastically deform a lower coil of said armature coils to conform to a contour of said stepped portion at the bottom of the slot, and thenpressing-deforming an edge of an opening at the top of said slot to bring an upper and the lower coil of said armature coils into close contact with each other and to fix the upper and lower coils in the slot by a deformed area of the opening.
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Abstract
A commutator including commutator segments each having a stepped portion formed at the bottom of a slot which is formed at one end of the commutator segment and into which portions of armature coils are inserted, to prevent axial escapement of the armature coils. A lower coil of the armature coils is plastically deformed to conform to the contour of the stepped portion and outer surface of an upper coil of the armature coils is plastic-deformed together with the commutator segments by pressing the edge of the opening of the slot to couple the armature coils to the commutator segments.
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7 Claims
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1. A method for connecting armature coils to commutator segments the method comprising the steps of:
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forming a stepped portion to prevent axial escapement of said armature coils at a bottom of a slot formed in each of said commutator segments, inserting portions of said armature coils into the slot, pressing inserted portions of said armature coils to plastically deform a lower coil of said armature coils to conform to a contour of said stepped portion at the bottom of the slot, and then pressing-deforming an edge of an opening at the top of said slot to bring an upper and the lower coil of said armature coils into close contact with each other and to fix the upper and lower coils in the slot by a deformed area of the opening. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification