Windscreen wiper device

Abstract

The invention relates to a windscreen wiper device, especially for a motor vehicle, having at least one fastening element (10) for fastening a wiper arm to a wiper shaft (11). Windscreen wiper devices are mounted in areas that are frequently impacted by pedestrians during collision with a vehicle. As a result, components of the windscreen wiper device are responsible for a large number of injuries to pedestrians. The aim of the invention is to improve the windscreen wiper device in such a manner that the risk of injury to pedestrians during collision with a vehicle is reduced. According to the inventive windscreen wiper device, the at least one fastening element (10) is provided with a predetermined breaking point (12) and can therefore be detached from the wiper shaft (11) during impact on the at least one fastening element (10).

Description

technical field

[0001] The invention relates to a windshield wiper device, in particular for motor vehicles, having at least one fastening element for fastening a wiper arm to a wiper shaft. Background technique

[0002] Pedestrians are completely unprotected in a collision with a vehicle. Especially the non-deformable and hard parts under the bonnet often cause serious injuries to pedestrians in the event of a collision with the car. The wiper system is located in the area where pedestrians often hit when they collide with vehicles. The conventional wiper devices known from the prior art have the disadvantage that they present a great risk of injury to pedestrians in the event of a collision between the pedestrian and the motor vehicle. Car manufacturers therefore require a minimum clearance of between 65 and 85 mm between the bonnet and the wiper drive mechanism. For this purpose, the distance from the wiper shaft to the lower edge of the windscreen has been increased. ...

Examples

Embodiment Construction

[0020] figure 1 A fastening part 10 of a windshield wiper system, which is not shown in detail here, is shown. The fastening part 10 connects a wiper arm, not shown in detail here, with a wiper shaft 11 . The fixture is a hollow cylinder. The fastening part 10 has, on the side facing the wiper shaft 11 , a desired breaking point 12 in the form of an annular groove. In the event of a collision with a pedestrian, the fixing element 10 will fail at the theoretical breaking point 12 . In order that the fastening element 10 breaks already at low impact forces, the groove 12 narrows towards its groove base. The wavy line 13 represents a possible fracture situation. The fastening element 10 will at least partially loosen from the wiper shaft 11 due to the fracture. Depending on the angle at which the pedestrian hits the fastening part 10 , the fastening part 10 is either pushed onto the wiper shaft 11 or deflected transversely to the wiper shaft 11 so that the fastening part ben...

technical field

[0001] The invention relates to a windshield wiper device, in particular for motor vehicles, having at least one fastening element for fastening a wiper arm to a wiper shaft. Background technique

[0002] Pedestrians are completely unprotected in a collision with a vehicle. Especially the non-deformable and hard parts under the bonnet often cause serious injuries to pedestrians in the event of a collision with the car. The wiper system is located in the area where pedestrians often hit when they collide with vehicles. The conventional wiper devices known from the prior art have the disadvantage that they present a great risk of injury to pedestrians in the event of a collision between the pedestrian and the motor vehicle. Car manufacturers therefore require a minimum clearance of between 65 and 85 mm between the bonnet and the wiper drive mechanism. For this purpose, the distance from the wiper shaft to the lower edge of the windscreen has been increased. ...

Examples

Embodiment Construction

[0020] figure 1 A fastening part 10 of a windshield wiper system, which is not shown in detail here, is shown. The fastening part 10 connects a wiper arm, not shown in detail here, with a wiper shaft 11 . The fixture is a hollow cylinder. The fastening part 10 has, on the side facing the wiper shaft 11 , a desired breaking point 12 in the form of an annular groove. In the event of a collision with a pedestrian, the fixing element 10 will fail at the theoretical breaking point 12 . In order that the fastening element 10 breaks already at low impact forces, the groove 12 narrows towards its groove base. The wavy line 13 represents a possible fracture situation. The fastening element 10 will at least partially loosen from the wiper shaft 11 due to the fracture. Depending on the angle at which the pedestrian hits the fastening part 10 , the fastening part 10 is either pushed onto the wiper shaft 11 or deflected transversely to the wiper shaft 11 so that the fastening part ben...

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