WIPING DEVICE FOR WINDOWS OF MOTOR VEHICLES HAVING A WIPER ARM WHICH IS GUIDED ON THE VEHICLE AND DRIVEN IN A PENDULUM MANNER

• US 20030097726A1
• Filed: 07/22/1999
• Published: 05/29/2003
• Est. Priority Date: 12/24/1997
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: KOTLARSKI, THOMAS
• Granted Patent: US 6,687,948 B2
• Time in Patent Office: Days
• US Class Current: 15/250.32
• CPC Class Codes: B60S 1/3868 pin formed on the exterior of side walls
• CPC Class Codes: B60S 1/40 Connections between blades and arms
• CPC Class Codes: B60S 1/4064 the channel-shaped end being provided with protrusions on, or holes in, the side walls to create a pivot

Abstract

A device is proposed which is used to wipe windows of motor vehicles. The wiping device has an oscillatingly driven wiper arm (12), guided on the motor vehicle, on whose free end, remote from the oscillation axis (16), a wiper blade (22) which is elongated transversely to the oscillation direction, that can be placed against the window (24) is releasably hinged via a connection device (26) that has coupling parts of the wiper arm and of the wiper blade, and the hinge axis (32) extends substantially in the oscillation direction (double arrow 18). In such a wiping device, an especially low-wear hinge is obtained if the wiping device has at least one support shoulder (72 and 96), fixed to the wiper arm and pointing toward the oscillation axis (16), with which a check shoulder (74 and 102) fixed to the wiper blade and pointing away from the oscillation axis (16) is associated.

Claims

1. A wiping device for windows of motor vehicles, having an oscillatingly driven wiper arm (12), guided on the motor vehicle, on whose free end, remote from the oscillation axis (16), a wiper blade (22) which is elongated transversely to the oscillation direction (arrow 18), that can be placed against the window (24) is releasably hinged via a connection device (26) that has coupling parts of the wiper arm and of the wiper blade, and the hinge axis (32) extends substantially in the oscillation direction, characterized in that the wiping device (10) has at least one support shoulder (72 and 96), fixed to the wiper arm and pointing toward the oscillation axis (16), with which a check shoulder (74 and 104) fixed to the wiper blade and pointing away from the oscillation axis (16) is associated.

2. The wiping device of claim 1, characterized in that the support shoulder (72 and 96) fixed to the wiper arm is disposed on the coupling part (28 and 90) of the wiper arm, and the check shoulder (74 and 104) of the wiper blade is disposed on the coupling part (30 and 102) of the wiper blade, the coupling parts being part of the connection device (26).

3. The wiping device of one of claims 1 or 2, characterized in that the support shoulder (72 and 96) and the check shoulder (74 and 104) are disposed between the oscillation axis (16) and the hinge axis (32).

4. The wiping device of one of claims 2 or 3, characterized in that the coupling part (28 and 90) of the wiper arm has a wall (38, 40 and 92) located in a plane vertical to the window (24) and extending substantially in the direction of the longitudinal axis of the wiper arm, adjacent to which wall is a surface (46, 48 and 100) of the coupling part (44 and 102) of the wiper blade, and that the support shoulder (72 and 96) is embodied on this wall and the check shoulder (74 and 104) is embodied on this surface.

5. The wiping device of claim 4, characterized in that the coupling part (28 and 90) of the wiper arm, crosswise to the longitudinal axis of the wiper arm (12), has a U-shaped cross section;

that one bearing receptacle (42 and 94) each for a pivot pin (50) of the coupling part (44 and 102) of the wiper blade is disposed in each of the legs (38, 40 and 92) of the U of this coupling part, which receptacle dips between the legs (38, 40 and 92) of the U of the coupling part (28 and 90) of the wiper arm, and that the inside of at least one leg (92) of the U forms the wall that is provided with the support shoulder (96).

6. The wiping device of one of claims 4 or 5, characterized in that the coupling part (30 and 102) of the wiper blade has a base body (44), in which the pivot pin is integrated in such a way that its two ends (50) protrude from it, and at least one face (46, 48) of the base body (44) forms the surface that is provided with the check shoulder (74).

7. The wiping device of one of claims 1 through 6, characterized in that both the support shoulder (72 and 96) and the check shoulder (74 and 104) have a curved course about the axis (32) of the hinge, and that the respective radius of curvature (78) corresponds to the respective spacing from the hinge axis (32).

8. The wiping device of one of claims 6 or 7, characterized in that the support shoulder (96) is embodied on a rib-like protrusion (98) on the inside of one leg (92) of the U, and the check shoulder (104) is embodied on the side wall of a groove (106) in the surface, toward this leg (92), of the U, of the base body (44).

9. The wiping device of one of claims 2 through 8, characterized in that a plurality of support shoulders and check shoulders are embodied on each of the two coupling parts (28, 30 and 90 and 102).

10. The wiping device of one of claims 1 through 9, characterized in that the two coupling parts (28, 30 and 90, 102) are made from a plastic.

11. The wiping device of claim 1, characterized in that the coupling parts (28 and 90;

30 and 102) are separable from one another, pointing outward away from the oscillation axis (16).

12. The wiping device of claim 11, characterized in that bore-like bearing receptacles (42) on the coupling part (28 and 90) of the wiper arm have opening slits (56) pointing outward, away from the oscillation axis (16), into which slits bearing pins (50) of the coupling part (30 and 102) of the wiper blade are introduced by flat faces (62).