Connecting unit for piston of internal combustion engine, has safety element taken up in circulating channel, and connecting rod comprising piston pin and small connecting rod eye that comprises borehole, where borehole flows into channel

摘要

The unit has a connecting rod (22) comprising a piston pin (21) and a small connecting rod eye (23), where a circulating groove (25) is formed along an outside lateral surface (24) of the pin. An inner surface (27) of a borehole of the eye comprises another circulating groove (28) such that the grooves form a circulating channel (29). A safety element (32) in a form of roller bodies (33) and/or sliding bodies is taken up in the channel, and the eye comprises another borehole that flows into the channel. The sliding and roller bodies are made of metallic material.