Patent ID: 10968912

Abstract:
A scroll compressor includes a bush having a shaft part and a balance weight part. The balance weight part is secured to an outer periphery of the shaft part by shrink-fitting. The shaft part includes: a cylindrical body part; and a cylindrical coupling part which extends outward from an axial end portion of the body part, and to which the balance weight part is joined. The bush satisfies the following requirements: 1.2≤D2/D1≤1.6; and  (a)1.0≤[(D2−D3)/(D4−D2)]×E1/E2≤3.5,  (b) where D1 is the outer diameter of the body part, D2 is the outer diameter of the coupling part, D3 is the inner diameter of the body part, D4 is the outer diameter of the balance weight part, E1 is the Young's modulus of the shaft part, and E2 is the Young's modulus of the balance weight part.