Importance

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Abstract

An electric motor assembly has a motor housing which includes a generally cylindrical housing shell and a base part closing one end of the shell; a rotor disposed in the motor housing and including a rotor shaft and a commutator mounted on the rotor shaft; a first bearing mounted in the motor housing adjacent a first end thereof and supporting the rotor shaft; a second bearing affixed to the rotor shaft and being situated in a second end of the housing. The motor assembly further has a brush assembly held in the motor housing at the second end thereof. The brush assembly includes a brush carrier plate closing liquid-tight the second end of the motor housing. The brush carrier plate has a bearing seat for centering and supporting the second bearing. The brush carrier plate includes a fitting part push-fitted into the housing shell at the second end thereof. The brush carrier plate further has an outer cylindrical fitting face being in engagement with an inner surface of the housing shell and a terminal conical sealing face adjoining the outer cylindrical fitting face and being in a face-to-face sealing engagement with an inner conical sealing face of an outwardly flaring extension of the housing shell. The carrier plate supports brushes which are in contact with the commutator.

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First Claim