Lower link of internal combustion engine

A lower link of an internal combustion engine which composes a piston crank mechanism of the internal combustion engine, the piston crank mechanism including:

• an upper link having one end connected to a piston of the internal combustion engine via a piston pin;
• the lower link connected to an other end of the upper link via an upper pin, and connected to a crank pin of a crankshaft;
• and a control link having one end swingably supported on an engine body side, and an other end connected to the lower link via a control pin, the lower link comprising:
• a crank pin bearing portion rotatably fitted to the crank pin between the upper pin and the control pin, wherein an oil hole for supplying lubricating oil from an oil supply hole of the crank pin toward a connecting portion between the upper pin and the upper link is formed through the crank pin bearing portion, wherein the oil hole includes:
• a first oil hole linearly extending from an inner peripheral surface of the crank pin bearing portion outwardly in a radial direction;
• and a second oil hole linearly extending so as to intersect a distal end portion of the first oil hole, and having one end opened to an outer surface of the lower link as an oil outlet, wherein an intersecting angle between the first oil hole and the second oil hole is larger than 90°.