Unitary bearing member and motor incorporating the same

Details Unitary bearing member and motor incorporating the same Unitary bearing member and motor incorporating the same

1987-04-29

1988-09-06

Petrakes, John

Bearings

Rotary bearing

Plain bearing

175104, 310 87, 384286, 384313, 384415, 417423R, F16C 1726, F16C 3310, H02K 512, E21B 404

Patent

active

047688882

ABSTRACT:
A bearing system for a motor (10) having a housing (20) and a rotor shaft (25). The bearing system includes a first unitary bearing member (31) located proximate to a first end (17) of the motor (10), and rotatably receiving the rotor shaft (25). The first bearing member (31) has a body region (40), first and second outer radial alignment surfaces (35, 36) for aligning the body region (40) relative to the housing (20), a radial bearing surface (45) for resisting radial forces from the rotor shaft (25) and an axial bearing surface (54) for resisting axial forces in a first direction. A flange (33) secures the first bearing member (31) to the housing (20). A first bearing plate (56) is fixed to the rotor shaft (25) for rotation therewith. The first bearing plate (56) is positioned in opposition to the axial bearing surface (54) of the first bearing member (31). A second unitary bearing member (32) is axially displaced from the first bearing member (31) with the rotor shaft (25) rotatably received by and passing axially through the second bearing member (32). The second bearing member (32) has a body region (74), first and second outer radial alignment surfaces (72, 73) for aligning the body region (74) relative to the housing (20), a radial bearing surface (80) for resisting radial forces from the rotor shaft (25), and an axial bearing surface (87) for resisting axial forces in a second direction. A rim (69) secures the second bearing member (32) to the housing (20). A second bearing plate (90) is fixed to the rotor shaft (25) for rotation therewith. The second bearing plate (90) is positioned in opposition to the axial bearing surface (87) of the second bearing member (32).

REFERENCES:
patent: 2942555 (1960-06-01), Pezzillo
patent: 2991837 (1961-07-01), Postlewaite
patent: 3294456 (1966-12-01), Williams et al.
patent: 3742595 (1973-07-01), Lykes
patent: 3842298 (1974-10-01), Schaefer
patent: 3947153 (1976-03-01), Matthias et al.
patent: 4329122 (1982-05-01), Owada et al.
patent: 4332524 (1982-06-01), Smith
patent: 4350911 (1982-09-01), Wilson et al.
patent: 4477235 (1984-10-01), Gilmer et al.
patent: 4575315 (1986-03-01), Galais et al.

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