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A molded plastic housing for a small electric motor having a radial end wall and an axially projecting portion for mounting the stator and journalling the motor shaft. An annular stator is mounted on and about the projecting portion and shaft bearings are mounted in axially spaced relationship in in

A molded plastic housing for a small electric motor having a radial end wall and an axially projecting portion for mounting the stator and journalling the motor shaft. An annular stator is mounted on and about the projecting portion and shaft bearings are mounted in axially spaced relationship in interference fit respectively at end sections of the housing portion and in direct engagement with the molded plastic. Reduced diameter and reduced thickness zones at the end sections provide for resilient and firm bearing retention and alignment. Four (4) circumaxially spaced slots at each end section with flats radially inwardly thereof provide for the reduced thickness and reduced diameter. The bearings engage the flats in an interference fit.

대표청구항 ▼

A molded plastic housing for a small electric motor having an annular stator and rotor arranged diametrically in inner-outer relationship and a central shaft operatively associated with and rotatable with the annular rotor disposed diametrically within the stator, said housing having at least one ra

A molded plastic housing for a small electric motor having an annular stator and rotor arranged diametrically in inner-outer relationship and a central shaft operatively associated with and rotatable with the annular rotor disposed diametrically within the stator, said housing having at least one radially extending end wall and a centrally located and integrally molded stator mounting and shaft journalling tubular housing portion which projects axially from the end wall, said projecting housing portion having intermediate and axially spaced opposite end sections, the opposite end section being flexible, first and second bearings disposed respectively in the opposite end sections for rotatably receiving and holding said shaft, each of said opposite end sections having their flexibility enhanced by at least three axially extending and circumaxially spaced reduced diameter and reduced thickness zones at least approximately the length of its associated bearing, and each of said end sections having at least three circumaxially spaced narrow discrete reduced diameter zones which extend axially, each of said bearings and its associated end section having an interference fit at least at said reduced diameter zones, and said annular stator being mounted on and about said projecting tubular housing portion.