Brush holder assembly

Claim 2

A brush holder for use with an electrical motor having a commutator comprising: a brush supporting and guiding element for supporting and guiding a motor brush for radial movement relative to said commutator; said element comprising a base and wall means together defining an elongated brush supporting and guiding channel extending radially with respect to said commutator with opposed slots in opposite walls thereof; a brush stop surface disposed within said channel adjacent its end remote from said commutator, and; a metal plate member mounted in said slots and extending therebetween, said plate member defining a wall of said brush guiding channel and having integral wire connection means and retaining means for securing said plate member in said slots.

Claim 3

The holder of claim 1, further comprising: a motor brush mounted in said channel between said metal plate member and opposite wall means defining said channel, in electrical contact with said metal plate member, and; brush-biasing spring means interposed between said stop surface and the end of said brush remote from said commutator for urging said brush toward said commutator.

Claim 4

The holder of claim 2, wherein said brush has a brush connecting wire extending from said brush to said wire connector means.

Claim 5

The holder of claim 1 wherein said wire connecting means comprises crimp tabs.

Claim 6

A brush holder assembly for use with an electrical motor having a commutator comprising: an integrally molded insulating plastic plate having brush supporting and guiding sites for supporting and guiding motor brushes for radial movement relative to said commutator, each said site comprising: a base for attachment to said motor defined by said plate; a pair of spaced integral upstanding wall means defining an elongated brush supporting and guiding channel extending radially with respect to said commutator, with opposed slots extending radially with respect to said commutator in said pair of wall means of said channel; a spring stop surface disposed within said channel adjacent its end remote from said commutator for stopping a brush-biasing compression spring, and; a metal plate member mounted in said slots and extending therebetween, said plate member defining one wall of said brush guiding channel, and having integral wire connection means and retaining means for holding said plate member in said slots.

Claim 7

A brush holder assembly for use with an electrical motor having a commutator comprising: an integrally molded insulating plastic plate having brush supporting and guiding sites for supporting and guiding motor brushes for radial movement relative to said commutator, each said site comprising: a base for attachment to said motor defined by said plate; a pair of spaced integral upstanding wall means defining an elongated brush supporting and guiding channel extending radially with respect to said commutator, with opposed slots extending radially with respect to said commutator in said pair of wall means of said channel; a spring stop surface disposed within said channel adjacent its end remote from said commutator for stopping a brush-biasing compression spring, and; a metal plate member mounted in said slots and extending therebetween, said plate member defining one wall of said brush guiding channel, and having integral wire connection means and retaining means for holding said plate member in said slots.

Claim 8

The holder of claim 5, further comprising: a motor brush mounted in said channel between said metal plate member and opposite wall means defining said channel, in electrical contact with said metal plate member, and; brush-biasing spring means interposed between said stop surface and the end of said brush remote from said commutator for urging said brush toward said commutator.

Claim 9

A brush holder as claimed in claim 5, wherein said metal plate member has an integral male terminal tab.

Claim 10

A brush holder for use with an electrical motor having a commutator comprising: an integrally molded insulating plastic brush supporting and guiding structure for supporting and guiding a pair of opposed motor brushes for radial movement relative to said commutator, said structure having a base for attachment to said motor and two pairs of spaced integral upstanding wall means each defining, together with said base, an elongated brush supporting and guiding channel extending radially with respect to said commutator, with opposed slots extending radially with respect to said commutator in each said pair of wall means of said channel; a metal plate member mounted in said slots and extending therebetween, said plate member defining one wall of said brush guiding channel, said metal plate member having integral wire crimp-tabs, a biasing spring stop portion extending into said channel adjacent its end remote from said commutator, and resilient burrs on its longitudinal slot-fitting edges extending out of the plane of said plate member outwardly from said channel and backwardly from said commutator; a motor brush mounted in said channel between said metal plate member and opposite wall means defining said channel, in electrical contact with said metal plate member, and; brush-biasing spring means interposed between said stop portion and the end of said brush remote from said commutator for urging said brush toward said commutator.

Claim 11

A brush holder for use with an electrical motor having a commutator comprising: an integrally molded insulating plastic brush supporting and guiding structure for supporting and guiding a pair of opposed motor brushes for radial movement relative to said commutator, said structure having a base for attachment to said motor and two pairs of spaced integral upstanding wall means each defining, together with said base, an elongated brush supporting and guiding channel extending radially with respect to said commutator, with opposed slots extending radially with respect to said commutator in each said pair of wall means of said channel; a metal plate member mounted in said slots and extending therebetween, said plate member defining one wall of said brush guiding channel, said metal plate member having integral wire crimp-tabs, a biasing spring stop portion extending into said channel adjacent its end remote from said commutator, and resilient burrs on its longitudinal slot-fitting edges extending out of the plane of said plate member outwardly from said channel and backwardly from said commutator; a motor brush mounted in said channel between said metal plate member and opposite wall means defining said channel, in electrical contact with said metal plate member, and; brush-biasing spring means interposed between said stop portion and the end of said brush remote from said commutator for urging said brush toward said commutator.

Claim 12

A brush holder as claimed in claim 8 wherein said spring means is a coil spring and said brushes have a brush connecting wire extending through said coil spring.

Claim 13

A brush holder for use with an electrical motor having a commutator comprising: a brush supporting and guiding element for supporting and guiding a motor brush for radial movement relative to said commutator; said element comprising a base and wall means together defining an elongated brush supporting and guiding channel extending radially with respect to said commutator with opposed slots in opposite walls thereof; a metal plate member mounted in said slots and extending therebetween, said plate member defining a wall of said brush guiding channel and having integral wire connection means and retaining means for securing said plate member in said slots; and a brush stop surface disposed within said channel adjacent its end remote from said commutator; said stop surface comprising a flange extending from said plate member into said channel.

Claim 14

A brush holder for use with an electrical motor having a commutator comprising: a brush supporting and guiding element for supporting and guiding a motor brush for radial movement relative to said commutator; said element comprising a base and wall means together defining an elongated brush supporting and guiding channel extending radially with respect to said commutator with opposed slots in opposite walls thereof; a metal plate member mounted in said slots and extending therebetween, said plate member defining a wall of said brush guiding channel and having integral wire connection means and retaining means for securing said plate member in said slots; and a brush stop surface disposed within said channel adjacent its end remote from said commutator; said stop surface comprising a flange extending from said plate member into said channel.

Claim 15

The holder of claim 10 wherein said retaining means comprises resilient burrs extending out of the plane of said plate member from its longitudinal slot-fitting edges, outwardly from said channel and backwardly from said commutator.