Assembly for the articulated connection of a connecting rod and a crankpin of a motor vehicle window wiping mechanism

An assembly belonging to a movement-transmission mechanism for driving the rotation of a motor vehicle wiper, this assembly comprising a crankpin, of axial orientation (A), which comprises a ball-joint ball, and a connecting rod which bears a ball-joint housing that houses the ball-joint ball, in which assembly the ball-joint housing and the connecting rod are assembled by bayonet fitting, and wherein:

• the connecting rod has a locking hole through which there passes axially, from the bottom up, an axial section of the ball-joint housing;
• the connecting rod comprises at least one locking lug;
• the ball-joint housing comprises a locking notch which is delimited by two opposite radial faces;
• the ball-joint housing is locked in axial position with respect to the connecting rod by relative rotation of the ball-joint housing with respect to the connecting rod by engaging said at least one locking lug in the locking notch,
• characterized in that one of the two opposite radial faces of the locking notch and a face opposite belonging to the locking lug each have inclined (alpha) profiles that complement one another so that, upon said rotation, the locking lug becomes axially clamped inside the locking notch.