Patent ID: 11879464
Assignee: MAHLE INTERNATIONAL GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 15:
16. A device for use in a scroll-type electric compressor configured to compress a refrigerant, the scroll-type electric compressor including a housing, a housing defining an intake volume and a discharge volume, a motor, and a compression device, the motor located within the housing, the compression device including a fixed scroll located within, and being fixed relative to, the housing and an orbiting scroll, the orbiting scroll and the fixed scroll forming compression chambers for receiving the refrigerant from the intake volume and compressing the refrigerant as the drive shaft is rotated about the center axis, the orbiting scroll having an inner circumferential surface, comprising:
a drive shaft located within the housing, having first and second ends and defining a center axis, the drive shaft being coupled to a rotor of the motor, the drive shaft being centered on a center axis;
a concentric protrusion located at the second end of the drive shaft and being centered on the center axis and extending away from the concentric protrusion along the center axis, the second end of the drive shaft including a drive pin aperture having an offset axis, the offset axis being parallel to the center axis,
a drive pin located within the drive pin aperture and extending away from the drive shaft, the drive pin being centered on the offset axis;
a swing-link mechanism coupled to the drive shaft and having first and second apertures for receiving the concentric protrusion and the drive pin and an outer circumferential surface; and,
a ball bearing positioned between, and adjacent to each of, the inner circumferential surface of the orbiting scroll and the outer circumferential surface of the swing-link mechanism, the drive shaft, drive pin, and swing-link mechanism being arranged with the orbiting scroll to cause the orbiting scroll to orbit the center axis in an eccentric orbit.