H - Electricity – 01 – R
Patent
H - Electricity
01
R
H01R 11/20 (2006.01) F04D 25/08 (2006.01) H01R 11/01 (2006.01) H02K 3/52 (2006.01) H02K 5/22 (2006.01) H02K 29/00 (2006.01) H02K 11/00 (2006.01)
Patent
CA 2148509
A brushless permanent magnet (BPM) motor has a stator mounted on a hub projecting from a base-enclosure. The base-enclosure is cup-shaped, open at an end remote from the stator hub, having a side wall and a top wall defining an interior space. A printed circuit board (PCB) is mounted above the top wall, below the stator. Electrical conductors electrically connected to a printed circuit on the printed circuit board extend through the top wall and into the interior space. The electrical conductors are mounted in a connector of the insulation displacement type, one form of which is known commercially as a Magmate connector. In the preferred embodiments, such a connector is made integral with an interior surface of the base-enclosure. It comprises an elongate boss with longitudinal slots in it to receive electrical conductors that are inserted into the slots and bent to extend transversely to a long axis of the boss, and channels extending parallel to the long axis of the boss to receive other electrical conductors, usually in the form of spade terminals or the like, which fit tightly in the channels and make solid physical and electrical contact with the transversely oriented conductors. When current is supplied directly to the only PCB, current supply conductors extend through a side wall port and are electrically connected in the connector boss to the electrical conductors from the printed circuit. When current is supplied to a second PCB, housed in the base-enclosure, conductors from the second PCB are electrically connected in the connector boss to the conductors from the PCB mounted above the top wall of the base-enclosure. In either embodiment, conductors from a printed circuit board are held spaced apart by one or more passive elements of the circuit, such, for example, as a capacitor, a resistor, or a diode, in substantial parallelism a distance equal to the distance apart of the slots in the connector boss. This serves the double purpose of connecting the element into the circuit, and facilitating the assembly of the motor.
Baker Gerald N.
Woodward Arthur E.
Borden Ladner Gervais Llp
Emerson Electric Co.
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