Commutator with resiliently clamped resistor ring
AssigneeJohnson Electric Industrial Manufactory Limited
InventorPatrick S. Wang
Life of this patent
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Abstract
A resistor ring, typically a varistor, is clamped in intimate contact with terminals of a commutator using a clip-on plastic clamp having a plurality of shock-absorbing spring fingers, thus avoiding the application of heat which could damage the resistor ring.
Claims7
An armature for an electric motor, comprising an armature winding, a commutator which has a plurality of commutator segments each provided with an integral terminal connected to a portion of the armature winding, a resistor ring, and a clip-on clamping member havig resilient means urging the resistor ring into contact with the terminals of the commutator, wherein the clamping member comprises a part, which is provided with said resilient means and which bears against the resistor ring, and a plurality of legs, which extend in a direction substantially parallel to an axis of the armature and which engage with the armature on that side of the resistor ring distal from the commutator segments.
An armature for an electric motor, comprising an armature winding, a commutator which has a plurality of commutator segments each provided with an integral terminal connected to a portion of the armature winding, a resistor ring, and a clip-on clamping member having resilient means urging the resistor ring into contact with the terminals of the commutator, wherein the clamping member includes a plurality of integral fan blades.
Dependencies are inferred from the claim text.