Windshield wiper device for motor vehicles
AssigneeRobert Bosch GmbH
InventorsPeter-Jurgen Kessler, Jurgen Mayer, Paul Weiler
Life of this patent
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Abstract
In a windshield wiper device each wiper blade has a wiper element with a lip applied to a windshield to be wiped and a back portion held in an elastic rail made from elastic plastics. The wiper element is secured on the elastic rail against mutual displacement in the direction of elongation of the rail. A two-part yoke system which engages the elastic rail provides for a uniform distribution of contact pressures exerted on the wiper elements.
Claims14
A wiper device for windshields of motor vehicles, comprising driven wiper arms and wiper blades each connected to a respective wiper arm, each wiper blade including an elongated wiper element having a wiper lip applied onto a windshield to be wiped off and a back portion connected to said wiper lip, an elongated elastic rail made of elastic plastics, said back portion being received in said elastic rail and secured therein against a lengthwise displacement relative to said elastic rail, a wiper blade-carrying yoke system having at least two portions engaged with said elastic rail, said elastic rail being secured against a lengthwise displacement relative to the yoke system, and means for connecting said yoke system to the respective wiper arm, said yoke system including a yoke element formed with a pin, said elastic rail being formed with an insertion bore receiving said pin, said wiper element being formed with a recess, said pin passing through said insertion bore and extending into said recess, said wiper element further including a body portion connected to said lip, and a neck portion extended between said body portion and said back portion and formed to provide grooves between said back portion and said body portion, said elastic rail including two claw-shaped portions which surround said neck portion whereby said claw-shaped portions are engaged in said grooves, and a cross-piece connected with said claw-shaped portions, said bore being formed in said cross-piece and extended into said claw-shaped portions so that a recess is formed in each of said claw-shaped portion, said neck portion having two opposite lateral faces facing said claw-shaped portions and each formed with a projection engaged in the respective recess formed in each claw-shaped portion.
A wiper device for windshields of motor vehicles, comprising driven wiper arms and wiper blades each connected to a respective wiper arm, each wiper blade including an elongated wiper element having a wiper lip applied onto a windshield to be wiped off and a back portion connected to said wiper lip;
- an elongated elastic rail made of elastic plastics, said back portion being received in said elastic rail and secured therein against a lengthwise displacement relative to said elastic rail;
- a wiper blade-carrying yoke system having at least two portions engaged with said elastic rail, means for connecting said yoke system to the respective wiper arm, said elastic rail being secured to said yoke system against a lengthwise displacement relative to the yoke system, said wiper element further including a body portion connected to said lip, and a neck portion extended between said body portion and said back portion and formed to provide grooves between said back portion and said body portion, said elastic rail including two claw-shaped portions which surround said neck portion, said elastic rail further including a cross-piece connected with said claw-shaped portions, said neck portion having two opposite lateral faces facing, said claw-shaped portions and each formed with a projection engaged in the respective recess formed in each claw-shaped portion, said elastic rail having two end portions extending outwardly from the respective claws in the direction of elongation of said elastic rail;
- and two locking members each connected to one of said end portions of said elastic rail.
Dependencies are inferred from the claim text.