Compressor

A compressor comprising:

• a hermetic case to store oil in a lower portion thereof;
• a compression mechanism part to compress a refrigerant;
• a power train part to generate a driving force;
• a rotational shaft to transmit the driving force generated from the power train part to the compression mechanism part;
• and
• an oil supplying mechanism comprising an oil pumping member which is coupled into the rotational shaft to fix the oil pumping member to the rotational shaft so as to move the oil stored in the lower portion of the hermetic case up, a spiral groove which is provided in an outer circumferential surface of the rotational shaft so as to further move the oil moved up through the oil pumping member up, and an oil supplying passage which is formed in the rotational shaft so as to supply the oil moved up through the spiral groove to the compression mechanism part and the power train part.

A method of manufacturing a compressor which comprises a hermetic case, a compression mechanism part, a power train part, a rotational shaft to transmit a driving force of the power train part to the compression mechanism part, and an oil pumping member including a male screw part, which is configured to be inserted into a hollow portion of the rotational shaft so as to move oil stored in a lower portion of the hermetic case in an upward direction, comprising:

• forming a female screw part at an upper hollow portion of the hollow portion of the rotational shaft;
• forming the male screw part configured to be coupled to the female screw part;
• and
• coupling the male screw part of the oil pumping member into the female screw part of the rotational shaft, and fixing the oil pumping member to the hollow portion of the rotational shaft.