Crank pin, ball joint and corresponding wiper actuating linkage system and method for the assembly thereof

The invention concerns a crank pin for a connecting rod of a wiper-actuating linkage system, the crank pin being configured to be received in a complementary inner cavity of a ball joint of the linkage system, and comprising a truncated spherical portion having at least one spherical sector and at least one truncated sector. The invention also concerns a complementary ball joint. The invention also concerns a corresponding linkage system and the method for assembling a connecting rod of such a system.