Electro-dynamic machine with an integral electrical service circuit
First Claim
1. An electro-dynamic machine comprising a casing, windings on the casings, a printed circuit defining conductive zones of the printed circuit, means securing the printed circuit to the casing of the machine, an electrical service circuit carried by the printed circuit, and an electrical connection cable connected on said conductive zones, said service circuit being connected to the windings whereby the latter are connectable to a source of electrical energy or a load via the cable, wherein the machine further includes an intermediate member closing the casing and having a peripheral flange defining a cavity within it, the electrical service circuit being mounted within said cavity, the intermediate member being mounted on the casing with said flange directed towards the exterior of the machine, the machine being associated with drive means such as a reduction gearbox, the drive means having an end plate secured to the casing of the machine with the intermediate member between them, the machine having a rotor with a rotor shaft and a commutator carried by the rotor shaft, the printed circuit including a circular insulating substrate defining a central hole with the rotor shaft and commutator passing through said central hole, the machine further including a brush carrier unit carried by the intermediate member, and the substrate defining on its outer periphery a plurality of locating notches for locating the brush carrier unit, the notches being arranged asymmetrically on the periphery of the substrate whereby the brush carrier unit can only be fitted in one orientation during the fitting of the printed circuit in the motor.
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Accused Products
Abstract
An electro-dynamic machine in the form of a d.c. motor having a commutator, has an electrical service circuit carried by a printed circuit on which are mounted brush carriers for the carbon brushes engaged with the commutator. The machine has a casing which is closed by an intermediate member, and the electrical service circuit is mounted within a cavity of the intermediate member defined by a peripheral flange of the latter, this flange being directed towards the interior of the machine when the intermediate member is mounted on the motor casing.
17 Citations
9 Claims
- 1. An electro-dynamic machine comprising a casing, windings on the casings, a printed circuit defining conductive zones of the printed circuit, means securing the printed circuit to the casing of the machine, an electrical service circuit carried by the printed circuit, and an electrical connection cable connected on said conductive zones, said service circuit being connected to the windings whereby the latter are connectable to a source of electrical energy or a load via the cable, wherein the machine further includes an intermediate member closing the casing and having a peripheral flange defining a cavity within it, the electrical service circuit being mounted within said cavity, the intermediate member being mounted on the casing with said flange directed towards the exterior of the machine, the machine being associated with drive means such as a reduction gearbox, the drive means having an end plate secured to the casing of the machine with the intermediate member between them, the machine having a rotor with a rotor shaft and a commutator carried by the rotor shaft, the printed circuit including a circular insulating substrate defining a central hole with the rotor shaft and commutator passing through said central hole, the machine further including a brush carrier unit carried by the intermediate member, and the substrate defining on its outer periphery a plurality of locating notches for locating the brush carrier unit, the notches being arranged asymmetrically on the periphery of the substrate whereby the brush carrier unit can only be fitted in one orientation during the fitting of the printed circuit in the motor.
Specification