Posture control of a balance weight in a scroll compressor

A scroll compressor comprising:

• a fixed scroll provided in a container;
• an orbiting scroll configured to orbit relative to the fixed scroll;
• a rotary shaft configured to transmit rotational drive force to the orbiting scroll;
• an eccentric shaft portion provided on one end side of the rotary shaft to be eccentric to the rotary shaft;
• a balance weight-equipped slider integrated of a slider portion having a slide hole and a balance weight portion, in a plane perpendicular to an axis of the rotary shaft, movable along the slide hole relative to the eccentric shaft portion inserted in the slide hole, and having centrifugal force set to be greater than centrifugal force of the orbiting scroll;
• an orbiting bearing provided to the orbiting scroll and rotatably supporting the slider portion of the balance weight-equipped slider;
• and
• a convex portion having a curved surface with one vertex, provided to one of an eccentric direction-side side surface of the eccentric shaft portion and an inner wall surface of the slide hole facing the side surface, configured to act as a posture control unit, the one vertex is located at a position corresponding to a central portion in an axial direction of the orbiting bearing between the eccentric direction-side side surface of the eccentric shaft portion and the inner wall surface of the slide hole facing the side surface, and configured to control a posture of the balance weight-equipped slider so that the slider portion of the balance weight-equipped slider maintains the posture parallel to the orbiting bearing,
• wherein the convex portion is configured to make point contact at one point when the slider portion is moved in a counter-eccentric direction.