Screen wiper mechanism comprising a crank and connecting rod coupled together by an improved articulating device

A screen wiper mechanism comprising a crank, a connecting rod, and articulating means for mounting the crank on the connecting rod, the connecting rod having a first lateral face having an engagement surface portion and a first hole having a pivot axis for rotation of the connecting rod in a plane perpendicular thereto formed through the connecting rod, the crank having a second hole formed through the crank, the articulating means including a pivot pin having in succession, a head in facing relationship with the engagement surface portion and bearing on the engagement surface portion, a first cylindrical shank portion extending through the first hole, a second cylindrical shank portion, of smaller diameter than the first cylindrical shank portion, defining an extension of the first cylindrical shank portion and extending through the second hole, the articulating means further including means securing the crank on the second shank portion against movement parallel with the pivot axis of the crank with respect to the connecting rod, wherein the connecting rod further includes at least one projecting element formed integrally with the engagement surface portion for taking up axial clearance by being compressed during formation of the securing means, further including a first ring through which the first cylindrical shank portion of the pivot pin extends, the first ring being interposed between the head of the pivot pin and the engagement surface portion.

A screen wiper mechanism comprising a crank, a connecting rod, a articulating means for mounting the crank on the connecting rod, the connecting rod having a first lateral face having an engagement surface portion and a first hole having a pivot axis for rotation of the connecting rod in a plane perpendicular thereto formed through the connecting rod, the crank having a second hole formed through the crank, the articulating means including a pivot pin having in succession, a head in facing relationship with the engagement surface portion and bearing on the engagement surface portion, a first cylindrical shank portion extending through the first hole, a second cylindrical shank portion, of smaller diameter than the first cylindrical shank portion, defining an extension of the first cylindrical shank portion and extending through the second hole, the articulating means further including means securing the crank on the second shank portion against movement parallel with the pivot axis of the crank with respect to the connecting rod, wherein the connecting rod further includes at least one projecting element formed integrally with the engagement surface portion for taking up axial clearance by being compressed during formation of the securing means, further including a second ring through which the first cylindrical shank portion of the pivot pin extends, the connecting rod having a second lateral face, the crank having a third lateral face in facing relationship with the second lateral face, and the second ling being interposed between the second and third lateral faces.

A screen wiper mechanism comprising a crank, a connecting rod, and articulating means for mounting the crank on the connecting rod, the connecting rod having a first lateral face having an engagement surface portion and a first hole having a pivot axis for rotation of the connecting rod in a plane perpendicular thereto formed through the connecting rod, the crank having a second hole formed through the crank, the articulating means including a pivot pin having in succession, a head in facing relationship with the engagement surface portion and bearing on the engagement surface portion, a first cylindrical shank portion extending through said first hole, a second cylindrical shank portion, of smaller diameter than the first cylindrical shank portion, defining an extension of the first cylindrical shank portion and extending through the second hole, the articulating means further including means securing the crank on the second shank portion against movement parallel with the pivot axis of the crank with respect to the connecting rod, wherein the connecting rod further includes at least one projecting element formed integrally with the engagement surface portion for taking up axial clearance by being compressed during formation of the securing means, wherein the connecting rod has a first lateral face, thc first lateral face having a recess formed therein, the recess having a base constituting thc engagement surface portion.

A screen wiper mechanism comprising a crank, a connecting rod, and articulating means for mounting the crank on the connecting rod, the connecting rod having a first lateral face having an engagement surface portion and a first hole having a pivot axis for rotation of the connecting rod in a plane perpendicular thereto formed through the connecting rod, the crank having a second hole formed through the crank, the articulating means including a pivot pin having in succession, a head in facing relationship with the engagement surface portion and bearing on the engagement surface portion, a first cylindrical shank portion extending through the first hole, a second cylindrical shank portion, of smaller diameter than the first cylindrical shank portion, defining an extension of the first cylindrical shank portion and extending through the second hole, the articulating means further including means securing the crank on the second shank portion against movement parallel with the pivot axis of the crank with respect to the connecting rod, wherein the connecting rod further includes at least one projecting element formed integrally with the engagement surface portion for taking up axial clearance by being compressed during formation of the securing means, wherein the articulating means further includes a sealing cap carried by the connecting rod and overlying the head of the pivot pin, further including an annular sealing ring interposed between the sealing cap and the first lateral face of the connecting rod.