Wiping device for windows of motor vehicles having a wiper arm which is guided on the vehicle and driven in a pendulum manner

• US 6,687,948 B2
• Filed: 07/22/1999
• Issued: 02/10/2004
• Est. Priority Date: 12/24/1997
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kotlarski, Thomas
• Primary Examiner(s): Graham, Gary K.
• Application Number:
  US09/341,999
• Publication Number:
  US 20030097726A1
• Time in Patent Office: 1,664 Days
• Field of Search: 152/503.2, 152/503.1, 152/503.61, 152/504.3, 152/504.4
• 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 an oscillation axis (16), a wiper blade (22) which is elongated transversely to the oscillation direction (18), that can be placed against the window (24) is releasably hinged via a connection device (26) that has coupling parts on the wiper arm and on the wiper blade, and the hinge axis (32) extends substantially in the oscillation direction, the wiping device (10) has at least one support shoulder (72 and 96) fixed to the wiper arm and facing toward the oscillation axis (16) to cooperate with a check shoulder (74 and 104) fixed to the wiper blade and facing away from the oscillation axis (16), 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 a respective radius of curvature (78) of said course corresponds to the respective spacing from the hinge axis (32).

2. A wiper blade of a wiping device for windows of motor vehicles having a driven wiper arm (12) which is guided on a motor vehicle and has a free end remote from an oscillation axis (16), the wiper blade including a wiper blade element (22) releasably hingable on the free end of the wiper arm (12);

and a connection device (26) provided for releasably hinging the wiper blade element (22) on the free end of the wiper arm (12), the connection device (26) having a coupling part (30) provided with a base body (44), a hinge axle (32) and check shoulders (74), the hinge axle (32) being arranged on the base body (44) and having two ends extending outwardly beyond the base body (44), the check shoulders (74) being arranged on the base body (44) so that when the wiper blade is assembled they face away from the oscillation axis (10) of the wiper arm (12), the hinge axle (32) being formed as a pin with two ends (50) extending on both sides of the coupling part (30) and receivable in a bearing receptacle (42) of the wiper arm (12) on the both sides, the check shoulder (74) being formed on side walls of grooves (106) disposed on side faces (100) of the base body (44).

3. A wiper arm for a wiping device for windows of motor vehicles having a wiper blade (22) placeable against a window (24), the wiper arm comprising a wiper arm element (12) having a free end remote from an oscillation axis (16);

and a connection devices (26) for releasably hinging the wiper blade (22) on the wiper arm element (12), the connection device (26) having a coupling part (28) provided with a hinge piece (36), at least one bearing receptacle (42), and support shoulders (72) formed as rib-shaped protrusions (98) disposed facing toward one another on insides of legs of the coupling part (90), the at least one bearing receptacle (42) being arranged on the hinge piece (36) so that it can receive ends of a hinge axle (32) extending from the wiper blade (22), the support shoulders (72) being arranged on the hinge piece (36) so that they face the oscillation axis (16) of the wiper arm element (12).

4. 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 an oscillation axis (16), a wiper blade (22) which is elongated transversely to the oscillation direction (18), that can be placed against the window (24) is releasably hinged via a connection device (26) that has coupling parts on the wiper arm and on the wiper blade, and the hinge axis (32) extends substantially in the oscillation direction, the wiping device (10) has at least one support shoulder (72 and 96), fixed to the wiper arm and facing toward the oscillation axis (16) to cooperate with a check shoulder (74 and 104) fixed to the wiper blade and facing away from the oscillation axis (16);

and the hinge axis (32) is arranged on the coupling part (30) of the wiper blade and has a base body (44), and the hinge axis (32) is formed as a pivot pin with two ends (50) extending from the base body (44), wherein 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 disclosed on the coupling part (30 and 102) of the wiper blade, the coupling parts being part of the connection device (26), wherein 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;

at least one phase (46, 48) of the base body (44) forms the surface that is provided with the check shoulder (74), wherein the support shoulder (96) is embodied on a rib-shaped protrusion (98) on an inside of one leg (92) of a U, and the check shoulder (104) is embodied on the side wall of a groove (106) in the surface, toward the one leg (92), of the U, of the base body (44).

5. 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 an oscillation axis (16), a wiper blade (22) which is elongated transversely to the oscillation direction (18), that can be placed against the window (24) is releasably hinged via a connection device (26) that has coupling parts on the wiper arm and on the wiper blade, and the hinge axis (32) extends substantially in the oscillation direction, the wiping device (10) has at least one support shoulder (72 and 96), fixed to the wiper arm and facing toward the oscillation axis (16) to cooperate with a check shoulder (74 and 104) fixed to the wiper blade and facing away from the oscillation axis (16);

and the hinge axis (32) is arranged on the coupling part (30) of the wiper blade and has a base body (44), and the hinge axis (32) is formed as a pivot pin with two ends (50) extending from the base body (44), wherein 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), wherein 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;

at least one phase (46, 48) of the base body (44) forms the surface that is provided with the check shoulder (74), 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 the respective radius of curvature (78) corresponds to the respective spacing from the hinge axis (32), wherein the support shoulder (96) is embodied on a rib-shaped protrusion (98) on an inside of one leg (92) of a U, and the check shoulder (104) is embodied on the side wall of a groove (106) in the surface, toward the one leg (92), of the U, of the base body (44).

6. 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 an oscillation axis (16), a wiper blade (22) which is elongated transversely to the oscillation direction (18), that can be placed against the window (24) is releasably hinged via a connection device (26) that has coupling parts on the wiper arm and on the wiper blade, and the hinge axis (32) extends substantially in the oscillation direction, the wiping device (10) has at least one support shoulder (72 and 96), fixed to the wiper arm and facing toward the oscillation axis (16) to cooperate with a check shoulder (74 and 104) fixed to the wiper blade and facing away from the oscillation axis (16), wherein 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 the respective radius of curvature (78) corresponds to the respective spacing from the hinge axis (32), and wherein the support shoulder (96) is embodied on a rib-shaped protrusion (98) on an inside of one leg (92) of a U, and the check shoulder (104) is embodied on the side wall of a groove (106) in the surface, toward the one leg (92) of the U, of a base body (44).