Patent ID: 9541080
Date: 2017-01-10
CPC Classifications: F04B

Claim:
1. A refrigeration compressor which comprises a shell containing lubricant oil and carrying a cylinder block journalling a crankshaft; an electric motor having a stator affixed to the cylinder block and a rotor mounted around the crankshaft; an oil pump coupled to the crankshaft and having: a tubular sleeve having an upper tubular portion affixed to one of the parts of the crankshaft and the rotor; and a pump body disposed in the interior of the tubular sleeve and having a lower end portion carried by an assembly defined by the cylinder block and stator, so as to be freely displaced in the interior of the tubular sleeve in radial directions orthogonal to the rotation axis of the rotor and rotatively locked in relation to the rotor, and a tubular connector mounting and retaining the tubular sleeve by one of the parts of the rotor and the crankshaft, where the upper tubular portion of the tubular sleeve is provided with a circumferential groove inside which the tubular connector is fitted and rotatively and axially retained, and in which the rotor is provided with a central axial hole having a lower extension not occupied by the crankshaft, characterized in that the tubular connector is a metallic connector which presents an outer circumferential face radially projecting beyond the contour of the tubular sleeve and which is fitted and retained in the interior of the lower extension of the central axial hole of the rotor.