Wiper blade for motor vehicle windows

A wiper blade for windows of motor vehicles, comprising a spring-elastic support element which has a longitudinal extension and a along the longitudinal extension has a lower and an upper band surface, a wiper element arranged on the lower band surface of the support element;

• a first coupling part arranged on the upper band surface of the support element and having an underside arranged on the upper band surface on and over a contact face and also having claw-shaped attachments which engage the support element, said first coupling part being cooperatable with a second coupling part belonging to a wiper arm, the support element along its longitudinal extension being curved so that in unstressed condition of the wiper blade the contact face of the underside of the first coupling part abuts against the upper band surface of the support element in direction of the longitudinal extension, the support element in addition to the contact face is also supported on the claw-shaped extensions;
• the first coupling part has a U-shaped support composed of metal and having outer walls;
• a U-shaped envelope composed of plastic and covering the outer walls of the support;
• and pivot pins arranged on the outer walls of legs of the envelope.

A wiper blade (10) for windows (30) of motor vehicles, having an elongated, spring-elastic support element (12) for an elongated rubber-elastic wiper element (32) that can be pressed against the window and is disposed on a lower face of the support element (12) oriented toward the window and longitudinally parallel to the support element, and having a first coupling part (16) with a flat underside positioned on an upper face of the support element remote from the window for pivotably connecting the wiper blade (10) to a second coupling part (18) belonging to a reciprocatingly driven wiper arm (20), in which a pivot axis (40) located in a longitudinal center portion of the support element is disposed substantially transversely to a longitudinal extension of the wiper blade (10), and the first coupling part (16) with its flat underside is oriented toward the upper face of the support element, characterized in that the support element (12) is curved over its entire length such that the longitudinal center portion of the support element (12), resting unstressed on the window (30), is farther away from the window than two end portions of the support element (12), and that a contact face (80) between the support element (12) and the underside of the coupling part (116), measured in a longitudinal direction of the wiper blade, is less than 1.5 times a maximum width (68) of the support element (12), that a joint (128) disposed between the first coupling part (16) and the second coupling part (18) has pivot pins (136) guided in bearing recesses, and that the contact face between the support element (12) and the first coupling part (16), measured in the longitudinal direction of the wiper blade, is less than a diameter of the pivot pins.

A wiper blade (10) for windows (30) of motor vehicles, having an elongated, spring-elastic support element (12) for an elongated rubber-elastic wiper element (32) that can be pressed against the window and is disposed on a lower face of the support element (12) oriented toward the window and longitudinally parallel to the support element, and having a first coupling part (116) with a flat underside positioned on an upper face of the support element remote from the window for pivotably connecting the wiper blade (10) to a second coupling part (18) belonging to a reciprocatingly driven wiper arm (20), in which a pivot axis (40) located in a longitudinal center portion of the support element is disposed substantially transversely to a longitudinal extension of the wiper blade (10), and the first coupling part (116) with its flat underside is oriented toward the upper face of the support element, characterized in that the support element (12) is curved over its entire length such that the longitudinal center portion of the support element (12), resting unstressed on the window (30), is farther away from the window than two end portions of the support element (12), and that a contact face (80) between the support element (12) and the underside of the first coupling part (116), measured in a longitudinal direction of the wiper blade, is less than 1.5 times a maximum width (68) of the support element (12), that a joint (128) disposed between the first coupling part (116) and the second coupling part (18) has pivot pins (136) guided in bearing recesses, and that the contact face (80) between the support element (12) and the first coupling part extends in a direction of the pivot axis (40).

A wiper blade (10) for windows (30) of motor vehicles, having an elongated, spring-elastic support element (12) for an elongated rubber-elastic wiper element (32) that can be pressed against the window and is disposed on a lower face of the support element (12) oriented toward the window and longitudinally parallel to the support element, and having a first coupling part (16) with a flat underside positioned on an upper face of the support element remote from the window for pivotably connecting the wiper blade (10) to a second coupling part (18) belonging to a reciprocatingly driven wiper arm (20), in which a pivot axis (40) located in a longitudinal center portion of the support element is disposed substantially transversely to a longitudinal extension of the wiper blade (10), and the first coupling part (16) with its flat underside is oriented toward the upper face of the support element, characterized in that the support element (12) is curved over its entire length such that the longitudinal center portion of the support element (12), resting unstressed on the window (30), is farther away from the window than two end portions of the support element (12), that a contact face (80) between the support element (12) and the underside of the first coupling part (16), measured in a longitudinal direction of the wiper blade, is less than 1.5 times a maximum width (68) of the support element (12), that the first coupling part (16) has a substantially U-shaped cross-section, said first coupling part (16) having a base (50) and two legs (52) to form the U-shaped cross-section, said support element (12) introduced between the legs (52) of the first coupling part (16), wherein attachments (54) are disposed on free ends of said legs (52) proximate to said pivot axis, and that the support element (12) has a curvature whereby a top side (14) of the support element (12) rests on an inside portion (56) of the base (50) while an underside (28) of the support element (12) is simultaneously braced in a prestressed fashion on end edges (70) of the attachments (54).