BE1003003A6 - Dual action windscreen wiper mechanism with ringed gear - Google Patents

Abstract

Based on the alternate longitudinal movement of the rod carrying the blade,according to linear guidance. This movement is a function of the thrustexerted on this rod by a sinusoidal profile rotary disk on the one hand andon the other by the spring return. The rotation of the disk results from thatof a gear wheel which is connected to it and is driven by its engagement witha similar but immobile toothed semicircle anchored to the bodywork.

Description

       

  Double action wiper mechanism with corrugated gear.

  
Principle: by double action we mean a wiper whose lateral movement is: doubled by an alternating longitudinal sliding.

  
For this purpose, we offer the following mechanism:

  
Description: let's name "arm B" the cross-linked part fixed on the axis of the wiper and containing part of the pressure spring.

  
And "rod T" its extension supporting at its end the wiper blade.

  
The rod T will not be fixed on the arm B, but

  
it will be connected by a linear guide (with balls or needles) allowing a longitudinal displacement in the same plane and without lateral deviations.

  
This rod will be provided with:

  
1 [deg.] / Of a "pusher P" (with ball or needle) in

  
its lower part.

  
'2 [deg.] / Of two stops limiting its longitudinal movement.

  
3 [deg.] / Of a return spring R.

  
Arm B will have an axis perpendicular to

  
his plan.

  
On this will be placed a "dis D", the edge or edge of which will have a sinusoidal profile (succession of bulges and hollow dice), in permanent contact with the pusher

  
 <EMI ID = 1.1>

  
The disc D will comprise a cylinder / pinion C perpendicular to its plane, and provided with gear teeth.

  
 <EMI ID = 2.1>

  
the lock nut of the wiper motor axis, we will place a half-disc F whose outer circumference will also be profiled with gear teeth corresponding to those of the cylinder / pinion C.

  
These teeth will be:

  
1 [deg.] / Or rectilinear as cut from a cylindrical sleeve surrounding the half disc F.

  
2 [deg.] / Or ringed, ie whose teeth will have a circular curvature.

  
Imaged folds, let us describe this ringed gear as having the appearance of a tube placed around the circumference of the half disc and in which gear teeth would have been cut.

  
This ringed gear will allow the cylinder / pinion to mesh effectively even with a certain latitude

  
 <EMI ID = 3.1>

  
some variations.

  
This ringed gear forming part of the exposed invention.

  
It is obvious that with each lateral movement of the wiper, the cylinder / pinion C will be subjected to rotations, driven by the gear of the half disc F.

  
These rotations linked to the disc D, implying alternating longitudinal sliding of the rod T of the wiper.


    

Claims (1)

Claim: for any double action wiper, the longitudinal sliding of which will be actuated by a disc <EMI ID = 4.1> The rotation of this disc being carried out by the gear between a toothed pinion which is linked to it and a half toothed disc  <EMI ID = 5.1> The teeth of this half disc can be straight or corrugated, that is to say of rounded profile. This type of toothed gear forming part of the claims of the patent applied for.