Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1996-09-19
1998-03-03
Graham, Gary K.
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
1525046, B60S 146, B60S 152
Patent
active
057221073
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a motor vehicle screen wiper, and the like.
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 an articulated pressure-distributing structure that 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.
The arrangement of the 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.
SUMMARY OF THE INVENTION
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 motor vehicle screen wiper of the type mentioned above, characterised in that the wetting ramp is fixed at least to an end of the pivot pin which projects transversely towards the wetting ramp.
In accordance with further features of the invention: projecting end of a pivot pin; longitudinal end of a main yoke of the articulated structure, with the wetting ramp extending along the main yoke; has a notch which cooperates with the lower edge of a side wall portion, in facing relationship with it, of a secondary yoke of the articulated structure; hole in the body of the wetting ramp; collar received in the hole; end of each pivot pin is encapsulated in the body of the wetting ramp by overmoulding; matches the profile of the main yoke, the lower face of the main piece having a longitudinal groove that constitutes an internal channel for distribution of washing liquid, together with a closure plate which has a set of spray nozzles; connection between the groove and a connection which is made integrally by moulding, for the connection of the wetting ramp to the end of a washing liquid supply tube carried by the screen wiper arm; main yoke; is made integrally by moulding and which extends parallel to the connection and above the latter, and which obturates the slot formed in the top spine portion of the main yoke; secondary yoke, and extending through the parallel side wing portions of the main yoke and the parallel side portions of the secondary yoke, and a noise deadening element is provided which comprises two parallel side walls interposed between the side wing portions of the main yoke and the side po
REFERENCES:
patent: 3757379 (1973-09-01), Benson
patent: 4782547 (1988-11-01), Mohnach
patent: 5339510 (1994-08-01), Roth et al.
Eustache Jean-Pierre
Roumegoux Jean-Louis
Graham Gary K.
Valeo Systemes D'Essuyage
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