Motor vehicles windscreen wiper comprising a spray line on the w

Details Motor vehicles windscreen wiper comprising a spray line on the w Motor vehicles windscreen wiper comprising a spray line on the w

1996-09-19

1997-09-02

Graham, Gary K.

Brushing, scrubbing, and general cleaning

Attachments

Optical-member-attachable cleaner

1525046, 1525044, 15250201, 1525032, B60S 148, B60S 152, B60S 138

Patent

active

056618700

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

More particularly, the invention relates to a screen wiper of the type comprising a blade-carrying arm together with a screen wiper blade, which comprises, for distribution of the pressure on the wiping strip, an articulated structure which includes at least one yoke articulated about a pivot axis at right angles to the general direction of the blade, the wiper being also of the type which includes a ramp for wetting the swept glass surface, this ramp extending at least partly along a lateral face of the screen wiper blade.


SUMMARY OF THE INVENTION

The arrangement of such a wetting ramp along the screen wiper blade enables effective wetting to be obtained by good distribution of the points from which a washing product is sprayed onto the swept glass surface.
In this connection, the wetting ramp must be arranged as close as possible to the wiping zone, that is to say close to the wiping strip which is carried by the articulated pressure-distributing structure that carries the wiping strip.
In accordance with various known designs, it has previously been proposed to form the wetting ramp in the form of an independent component which generally takes the form of a rigid elongate body that is juxtaposed against a lateral face of the main yoke of the articulated structure, to which it is fixed by means of hooking clips, by elastic clipping or by fasteners such as screws, rivets, collars etc.
All of these designs have the disadvantage that they ar detrimental to the aerodynamic profile of the screen wiper blade, and are also detrimental to its general appearance.
It has also previously been proposed to integrate the wetting ramp into the screen wiper blade, or into one of the components of the blade where the latter are made by moulding in a plastics material,
Such a solution cannot however be achieved in all cases, and in particular where the articulated support structure is made by assembly and articulation of essentially metallic components.
An object of the present invention is to propose a new design for a screen wiper of the type mentioned above, and in particular for the means for fastening the wetting ramp which simplify mounting and fastening of the ramp, and which also enables a profiled wetting ramp body to be of an agreeable appearance, independently of the fastening means.
To this end, the invention proposes a screen wiper for a motor vehicle, of the type comprising a blade-carrying arm, a screen wiper blade, and a ramp for wetting the swept glass surface and extending substantially along a lateral face of the screen wiper blade, and of the type in which the screen wiper blade includes an articulated pressure-distributing structure which comprises at least one intermediate yoke articulated on a main yoke about a pivot pin, which is substantially at right angles to the longitudinal direction of the main yoke and which extends through two side wing portions of the main yoke and two parallel side portions of the intermediate yoke, together with a noise deadening element having two parallel side walls, which are interposed between the side wing portions of the main yoke and the side portions of the intermediate yoke, and through which the body of the pivot pin passes, characterised in that the wetting ramp extends along one of the side wing portions of the main yoke, and in that the ramp is formed integrally by moulding with the noise deadening element.
In accordance with further features of the invention: which there extends longitudnally a channel for distribution of the washing liquid, and which has a set of orifices for spraying the swept glass surface, and in that the longitudinal wetting body portion is joined to the longitudinal lower edge of one of the side walls of the noise deadening element; intermediate yoke by articulation, with a noise deadening element being interposed, and the body portion of the wetting ramp is formed integrally by moulding with both of the noise deadening elements; wall, in which two side walls of the two noise deadening elements are inte

REFERENCES:
patent: 2910715 (1959-11-01), Ohrt
patent: 3296647 (1967-01-01), Gumbleton
patent: 3854161 (1974-12-01), Benson

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