Patent ID: 11959670
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A refrigerant compressor comprising:
an electric component;
a compression component driven by the electric component to compress a refrigerant; and
a sealed container accommodating the electric component and the compression component, wherein:
the compression component includes
a shaft part rotated by the electric component and
a bearing part slidingly contacting the shaft part such that the shaft part is rotatable;

an inner peripheral surface of the bearing part includes
a sliding surface,
a chamfered surface provided closer to an end of the bearing part than the sliding surface in a center axis direction of the bearing part, and
a corner between the sliding surface and the chamfered surface;

an outer peripheral surface of the shaft part includes
a sliding surface and
a small-diameter portion which is provided closer to an end of the shaft part than the sliding surface of the shaft part in a center axis direction of the shaft part, is smaller in diameter than the sliding surface, and is opposed to the corner and the chamfered surface in a direction perpendicular to the center axis direction of the shaft part, the chamfered surface being adjacent to the small-diameter portion;

the sliding surface of the shaft part includes a curved-surface portion having an outer diameter that continuously decreases in a curved shape toward the end of the shaft part in the center axis direction of the shaft part; and
the small-diameter portion is connected to the curved-surface portion in a step shape.