Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1984-07-17
1986-11-18
Feldman, Peter
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
1525035, 1525042, 1525032, B60S 140
Patent
active
046227113
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to windscreen wiper systems designed for vehicles, in particular road vehicles, which comprise a rocker or tilter arm enabling any one of the points of the blade(s) which are associated therewith in a system of this type to be provided with a non-circular path which is designed to improve visibility and cleaning quality with respect to conventional windscreen wiper systems having a circular path.
The windscreen wiper blades which are used with these systems are generally constituted by a scraper blade comprising a wiper lip made of elastomer which is designed to come into contact with a surface to be cleaned such as a windscreen. This scraper blade is either mounted solely by means of an armature articulated at one end of a windscreen wiper arm which is pivotably mounted at its other end on the vehicle, or connected to an armature of this type by means of rocking levers which are themselves articulated below the armature.
The Belgian Patent Specification No. 890 467 discloses a windscreen wiper system of this type, in which a blade is mounted in a detachable manner by means of its armature on a rocker or tilter arm which is itself, on one hand, mounted pivotably about a first axis on the blade support arm which is caused to rotate in an alternating manner and, on the other hand, articulated on a rocker arm control member, which control member is displaced with respect to the blade support arm, during the alternating rotation of the latter, such that the rocker arm pivots with respect to the blade support arm and the path of any one of the points of the blade is non-circular.
The present invention proposes to improve the windscreen wiper systems of the type described above. The invention relates to a windscreen wiper system of the type mentioned above, whose construction enables the dimensions of the system at the connection of the rocker arm to the two arms and the blade to be limited so as not to hinder the visibility of the driver.
For this purpose, the windscreen wiper system of the invention, of the type described above, is characterised in that the armature of the blade is connected to the rocker arm by means of an adapter on which the rocker arm is mounted to pivot about an axis of rotation located on the side of the web of the armature on which the surface to be cleaned is located. It should be noted that the axis of rotation (rocker arm/adapter) may or may not be embodied in the form of a hinge member. If this is not the case, it may be positioned to infinity in which case the relative rocker arm/adapter movement becomes a translation.
The adapter is advantageously mounted in a detachable manner on the armature by resilient locking. An embodiment of this type has the advantage that, in order to replace a blade, it is simply necessary to unlock the adapter from the blade in position in a resilient manner so as to be able to remove the latter without having to dismantle any articulations and without having to modify the assembly of the blade support arm and the rocker arm control member with the rocker arm. Positioning of a new blade may be carried out in a simple manner by positioning it on the adapter and resiliently locking the adapter on the armature of the blade.
The rocker arm is preferably mounted to pivot about a second axis on the adapter, which axis is parallel to the first axis providing the (rocker arm/blade support arm) articulation, which, on one hand, facilitates the displacements of the blade with respect to the blade support arm, when the rocker arm is pivoted on the latter, and, on the other hand, ensures an improved entrainment of the blade by the blade support arm during the alternating rotations of the latter, as well as a correct retention of the blade armature in a plane passing through the blade support arm and perpendicular to the windscreen, which ensures a good cleaning quality.
The articulation of the rocker arm on the rocker arm control member is advantageously located substantially between the first and the second axis. It is provided by two
Equipements Automobiles Marchall
Feldman Peter
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