Wiper blade for a window washing apparatus

A wiper blade for windshield systems of motor vehicles, the wiper blade comprising a wiper strip;

• and a multi-link elongated support bow system for supporting said wiper strip, said bow system having at least one upper support bow, at least one lower support bow and a hinge bolt hingedly connecting said support bows with one another, said support bows having transverse-U-shaped cross-sections provided in an area of said hinge, said U-shaped cross-section of said upper bow extending over a part of said U-shaped cross-section of said lower bow so that legs of said support bows extend essentially parallel to one another and have coaxial openings through which said hinge bolts extends, said hinge bolt further having means for securing said hinge bolt against an axial displacement, said securing means being connected with said hinge bolt and composed of an elastic material to be deflected against a spring force at least as far as a surface area of said bolt, said securing means being provided with detent shoulders located between said legs of said lower bow and facing away from one another, and counter shoulders provided on said lower bow so that said detent shoulders cooperate with said counter shoulders, said securing means including at least one tab-shaped wing which is provided with said detent shoulders, said wing having one long side connected with said hinge bolt inside a surface area of said hinge bolt, said wing extending tangentially with said bolt past the surface area and having a length which corresponds to a distance between facing surfaces of said legs of said lower bow, said hinge bolt having a recess extending past a length of said wing, said wing having a free end insertable in said recess.

A wiper blade for windshield wiper systems of motor vehicles, the wiper blade comprising a wiper strip arranged to rest against a windshield;

• and a multi-link elongated support bow system provided for said wiper strip, said bow system having at least one upper elongated support bow, at least one elongated lower support bow and a hinge bolt hingedly connecting said support bows with one another, said hinge bolt defining a pivot axis, said support bows having U-shaped transverse cross-sections provided in an area of said hinge bolt and said U-shaped cross-section of said upper bow extends over a part of said U-shaped cross-section of said lower bow so that legs of said support bows extend essentially parallel to one another and have coaxial openings through which said hinge bolt extends, said hinge bolt having means for securing said hinge bolt against an axial displacement in said opening with respect to said bow system, said securing means being connected with said hinge bolt and composed of an elastic material to be deflected against a spring force at least as far as a surface area of said bolt, said securing means being provided with detent shoulders located between said legs of said lower bow, said shoulders defining end surfaces extending substantially perpendicular to said axis and facing away from one another, and counter shoulders provided on said lower bow so that said detent shoulders cooperate with said counter shoulders, said securing means including at least one tab-shaped wing attached along a longitudinal edge thereof to said bolt, said wing being provided with said detent shoulders.