| 摘要 |
A windshield wiper system (3) for a windshield (1) having a curved surface and an oscillating gear drive (2) with a central park position (A). Said system (3) comprises at least one wiper arm (13) and wiper blades (5), said wiper blades (5) being mounted by means of said at least one wiper arm (13) to said oscillating gear drive (2). The windshield (1) and the wiper blade lips (11) have a frictional coefficient (μ). Two wiper arms (13), two wiper blades (5) each with a fit bolt (20), bearing bushes (10), a prolongation fitting (7) and a rocker (6) are provided. Said two wiper blades (5) are mounted rotatable about a wiper blade rotation axis (9), perpendicular to said oscillatory axis (V) and said longitudinal axis (U). Said wiper blade rotation axis (9) is defined by a center line through the fit bolts (20) mounted opposed to each other on said two wiper blades (5) being essentially parallel with a distance (a) to each other. Said rocker (6) rotatable attaches each of the two wiper blades (5) by means of the fit bolt (12). The prolongation fitting (7) rotatable attaches the rocker (6) to the wiper arms (13). The fit bolt (12) with the rocker (6) defines a rocker rotation axis (8) in a plane defined by said oscillatory axis (V) and said longitudinal axis (U) with an inclination angle β to the outer surface of the windshield (1) in the central park position (A) providing a distance (b) direct under the wiper blades rotation axis (9) between the windshield (1) and the rocker rotation axis (8) perpendicular to the windshield (1) in the central park position (A) fulfilling;[2·ba]<(1-μ). |
| 主权项 |
1. A windshield wiper system for vehicles, particularly a windshield wiper system for rotary wing aircrafts, with a windshield having a curved surface and an oscillating gear drive with a central park position, said system comprising:
at least one wiper arm and wiper blades, said wiper blades being mounted by means of said at least one wiper arm to said oscillating gear drive for oscillation across the windshield about an oscillatory axis, the windshield and the wiper blade lips have a frictional coefficient (μ), said wiper blades being mounted to said at least one wiper arm distal to said oscillatory axis and defining in said central park position a longitudinal axis along said curved surface of the windshield, and said at least one wiper arm in said central park position being aligned with said longitudinal axis; wherein two wiper arms, two wiper blades each with a fit bolt, bearing bushes, a prolongation fitting and a rocker are provided, said two wiper blades being mounted rotatable about a wiper blade rotation axis, perpendicular to said oscillatory axis and said longitudinal axis, said wiper blade rotation axis, being defined by a center line through the fit bolts mounted opposed to each other on said two wiper blades being essentially parallel with a distance to each other, said rocker rotatable attaching each of the two wiper blades by means of the fit bolt, and the prolongation fitting rotatable attaching the rocker to the wiper arms, the fit bolt with the rocker defining a rocker rotation axis in a plane defined by said oscillatory axis and said longitudinal axis with an inclination angle β to the outer surface of the windshield in the central park position providing a distance direct under the wiper blades rotation axis between the windshield and the rocker rotation axis perpendicular to the windshield in the central park position (A) fulfilling[2·ba]<(1-μ). |
