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A combined support and end cover for electric motors, and for small permanent magnet dc units in particular, which is molded in one piece from insulating plastic material and formed essentially as a flat disk of which the inner surface affords a central socket serving to support the corresponding en

A combined support and end cover for electric motors, and for small permanent magnet dc units in particular, which is molded in one piece from insulating plastic material and formed essentially as a flat disk of which the inner surface affords a central socket serving to support the corresponding end of the rotor shaft, a set of slotted holders for the brush contacts, and a number of posts projecting perpendicularly from the periphery of the disk between which the permanent magnet pole pieces are supported.

대표청구항 ▼

A combined support and end cover structure for dc motors with a commutator at one end and permanent magnet type stator pole pieces, comprising: a first element embodied substantially in the form of a disk and constituting a cover for the end of the electric motor occupied by the commutator, the inte

A combined support and end cover structure for dc motors with a commutator at one end and permanent magnet type stator pole pieces, comprising: a first element embodied substantially in the form of a disk and constituting a cover for the end of the electric motor occupied by the commutator, the internal face of which affords a first socket providing a journal bearing for the shaft of the motor; a plurality of hollow holders associated with the internal face of the first element near to the first socket, each provided with at least one lateral slot and accommodating a respective brush contact; a plurality of pins, issuing one alongside each hollow holder from the internal face of the firs element and serving as anchors for relative tension springs against which the single brush contacts are loaded; a plurality of posts serving to support the permanent magnet pole pieces of the motor, projecting perpendicularly from points equally spaced around the periphery of the first element and fashioned with a longitudinal groove on either side; a plurality of radial fins each exhibiting a projection at one end, distributed around the periphery of the first element and occupying the spaces between successive posts in such a way as to provide stops against which the permanent magnet pole pieces are positioned.