Brushholders and ancillary components mounted on a printed circuit board

• US 3,924,147 A
• Filed: 01/02/1974
• Issued: 12/02/1975
• Est. Priority Date: 01/02/1974
• Status: Expired due to Term

• Current Assignee: Bankers Trust Company
• Original Assignee: Kenneth E. Doshier, Virgil K. Tarnow
• Inventors: Tarnow, Virgil K., Doshier, Kenneth E.
• Primary Examiner(s): Skudy, R.
• Application Number:
  US05/429,751
• Time in Patent Office: 699 Days
• Field of Search: 310/240,68,239,68D,241,71,242,72,243,245,220,221,222,DIG.6 318/331,345 219/85
• US Class Current: 310/68.00R
• CPC Class Codes: H02K 11/026 Suppressors associated with brushes, brush holders or their supports
• CPC Class Codes: H02K 5/148 Slidably supported brushes

Abstract

Electrically conductive brushholders, terminals and other electrical components on one side of an insulating plate are retained on the plate and connected into a printed circuit on the opposite side of the plate by portions extending through holes in the plate and soldered to the printed circuitry to form a subassembly to be mounted in a commutator type motor so that brushes in the brushholders can deliver current from an external supply to the commutator.

Claims

1. A motor sub-assembly comprising an insulating plate, a current conducting metal surface on a first side of said plate, a current conducting brushholder adjacent a second side of said plate and adapted to receive and guide a brush, a projection integral with said brushholder and extending through the insulating plate to said current conducting surface, a noise suppressor adjacent said second side, a conductor from the noise suppressor to said current conducting surface, and soldered connections rigidly joining the projection and said conductor to the conducting surface, said soldered connections retaining the brushholder and said noise suppressor on said plate and conducting current between the conducting surface and the respective projection and conductor.

2. A motor sub-assembly comprising an insulating plate, a plurality of apertures in a predetermined relationship through said plate, current conducting metal surfaces interconnecting the apertures in a predetermined pattern on a first side of said plate, a pair of current carrying brushholders located in spaced axial alignment on a second side of said plate, a current conducting projection from each of said brushholders passing through respective ones of said apertures to the associated current conducting surfaces, a pair of terminals on said second side of the plate, a current conducting end on each of said terminals and extending through pre-selected ones of the apertures to the corresponding current conducting surfaces, at least one electrical component on said second side and having a pair of conductors inserted through predetermined ones of the apertures to communicating ones of said current conducting surfaces, and soldered junctions rigidly joining the projections, ends and conductors to said respective conducting surfaces, said soldered junctions conducting current between the conducting surfaces and the respective projections, ends and conductors to form predetermined electrical circuits between the terminals and said brushholders, said electrical circuits comprising a noise suppressor.

3. A motor sub-assembly according to claim 2 wherein said noise suppressor comprises an inductor in series between one of the terminals and one of the brushholders.

4. A motor sub-assembly according to claim 2 wherein said noise suppressor comprises a capacitor connected between the terminals.

5. A motor sub-assembly comprising an insulating plate, a plurality of apertures in a predetermined relationship through said plate, curRent conducting metal surfaces interconnecting the apertures in a predetermined pattern on a first side of said plate, a pair of current conducting brushholders, an insulated housing on a second side of said plate, aligned passages in the housing receiving respective ones of said brushholders, interfitting means keying the housing and plate in predetermined relation, a current conducting projection from each of the brushholders passing through respective ones of said apertures to the associated current surfaces, a pair of terminals on said second side of the plate, a current conducting end on each of said terminals and extending through pre-selected ones of the apertures to the corresponding current conducting surfaces, at least one electrical component on said second side and having a pair of conductors inserted through predetermined ones of the apertures to communicating ones of said current conducting surfaces, and solder junctions between said current conducting surfaces and the respective projections, ends and conductors, whereby said housing, terminals and component are rigidly mounted on the plate and said current conducting surfaces interconnect said brushholders, terminals and component to form a predetermined electrical circuit between the terminals and said brushholders.

6. A motor sub-assembly according to claim 5 additionally comprising an end bell, and means attaching said housing to the end bell in predetermined fixed relation.

7. A motor sub-assembly acccording to claim 5 additionally comprising a protrusion into one of the passages to depress a wall of said received brushholder to retain the brushholder in said passage.