Patent ID: 7497671
Filing Date: 2009-03-03
Classification: F04B,Y10S

Abstract:
1. A hermetic compressor comprising: an electric driving element; a compressing element driven by the electric driving element; and a closed vessel for housing the electric driving element and the compressing element, wherein the compressing element comprises: wherein a first balance weight is provided on the auxiliary shaft portion at a top end of the eccentric shaft portion; wherein a second balance weight is provided on the spindle portion at a bottom end of the eccentric shaft portion; wherein the first balance weight is coupled to the auxiliary shaft portion by a separate member having a head portion and a base portion, the diameter of the base portion being smaller than the diameter of the head portion, the auxiliary shaft portion being provided with a hole through which the base portion passes, the separate member being arranged between the first balance weight and the auxiliary shaft portion so that the base portion is fixed with the first balance weight and the head portion is in contact with the auxiliary shaft portion; and wherein the auxiliary shaft portion and the first balance weight are provided with a concave part and a convex part, respectively, such that the concave part and the convex part fit together so as to position the first balance weight.