Patent ID: 8690558

Claim:
A compressor comprising: a crankshaft having an eccentric shaft portion; a roller fitted over the eccentric shaft portion, a first constituent element configured to be laser welded; and a first slider composed of cast iron and configured to be laser welded and having a carbon content of at least 2.0 wt % and no more than 2.7 wt %, the first slider including a cylinder block having a cylinder hole configured to accommodate the eccentric shaft portion and the roller, the first constituent element including a bearing portion and a head configured to cover at least one side of the cylinder hole, the head including a cylinder closing portion extending radially outwardly from the bearing portion to overlap an outer periphery of the cylinder chamber, and a joining portion extending radially outwardly from the cylinder closing portion, with the joining portion being thinner than the cylinder closing portion overlapping the outer periphery of the cylinder, and the first slider being joined with the first constituent element by penetration laser welding without using a filler.