Electric motor and brush/shunt assembly therefor
First Claim
Patent Images
1. A dynamo-electric machine comprising:
- a stationary stator portion including a stator core;
an armature mounted for rotation in said stator core;
at least one armature coil wound on said armature;
a commutator mounted on said armature to which said at least one armature coil is terminated;
at least one brush for contacting said commutator;
at least one terminal mounted on said stator, said terminal having a pair of electrically conductive arms and a slot between said pair of electrically conductive arms for receiving a lead, said arms exerting an inward force on said lead for retaining said lead and for making electrical contact therewith; and
at least one stranded wire shunt for connecting said at least one brush to said at least one terminal, said at least one stranded wire shunt having an end lacking an insulation sheath and stiffened without use of an additional rigid element;
wherein;
when said dynamo-electric machine is assembled, said stiffened end of said stranded wire shunt lacking said insulation sheath is inserted between said electrically conductive arms of said terminal.
7 Assignments
0 Petitions
Accused Products
Abstract
A brush/shunt assembly for an electric motor is provided. The shunt portion of the assembly is a stranded wire shunt with a joined (e.g., fused) end that can be easily inserted into a slotted terminal. A lubricant can be added to reduce insertion forces.
64 Citations
24 Claims
-
1. A dynamo-electric machine comprising:
-
a stationary stator portion including a stator core; an armature mounted for rotation in said stator core; at least one armature coil wound on said armature; a commutator mounted on said armature to which said at least one armature coil is terminated; at least one brush for contacting said commutator; at least one terminal mounted on said stator, said terminal having a pair of electrically conductive arms and a slot between said pair of electrically conductive arms for receiving a lead, said arms exerting an inward force on said lead for retaining said lead and for making electrical contact therewith; and at least one stranded wire shunt for connecting said at least one brush to said at least one terminal, said at least one stranded wire shunt having an end lacking an insulation sheath and stiffened without use of an additional rigid element;
wherein;when said dynamo-electric machine is assembled, said stiffened end of said stranded wire shunt lacking said insulation sheath is inserted between said electrically conductive arms of said terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An electric motor comprising:
-
a stationary stator portion including a stator core; a rotatable armature mounted for rotation within said stator core; at least one armature coil wound on said armature; a commutator on said armature to which said at least one armature coil is terminated; at least one brush for contacting said commutator; a respective stranded brush shunt for electrically connecting each said brush at a proximal end of said shunt to a respective termination point on said stationary stator portion at a distal end of said shunt lacking an insulation sheath, said respective termination point being a slotted terminal having a slot for receiving said distal end between a pair of electrically conductive arms, said distal end of said stranded brush shunt lacking said insulation sheath being stiffened without use of an additional rigid element for insertion into said slot, said arms exerting an inward force on said stiffened distal end lacking said insulation sheath for retaining said one of said stranded brush shunts and for making electrical contact therewith; and an electric light source having at least one lead connected to one of said respective termination point, said one of said leads being inserted also in said slot between said conductive arms. - View Dependent Claims (20, 21, 22, 23, 24)
-
-
13. A brush/shunt assembly for use in a dynamo-electric machine, said assembly comprising:
-
a commutator brush; and a stranded wire shunt connected at a first end thereof to said commutator brush and having a second end for connection to a terminal on a stationary stator portion of said dynamo-electric machine, said second end of said stranded wire shunt (a) lacking an insulation sheath, and (b) being stiffened without use of an additional rigid element for insertion into said terminal. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification