Fixing means for a windshield wiper system

Details Fixing means for a windshield wiper system Fixing means for a windshield wiper system

1996-06-07

1998-10-13

Knight, Anthony

Joints and connections

Rod end to transverse side of member

Utilizing opposite sides of member

403331, 403226, 403220, B60S 104, B62D 2704

Patent

active

058202862

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

This invention relates to windshield wiper systems and more particularly relates to a fixing means for a windshield wiper system which allows a noise-dampening attachment of vibration-loaded parts or elements to a vehicle body or parts thereof.


BACKGROUND OF THE INVENTION

DE 40 36 367 A1 discloses a pre-mountable wiper system whose motor carrier plate and wiper bearing housing are equipped with fixing means for vibration-limiting or noise-dampening attachment to the vehicle body. Each of the wiper bearing housings has a lateral mounting projection. These mounting projections and the motor carrier plate feature a through bore provided therein. Buttoned into the through bore is a hollow cylindrical dampening element of rubber-elastic material with an annular groove extending along its outside circumference. The location of the annular groove is about mid-length of the body of the dampening element. The windshield wiper system is to be attached to the vehicle body by means of bolts reaching through the dampening elements.
These fixing means described here are disadvantageous in that it is a very intensive and intricate operation to button the dampening elements into the through bores.
From DE 39 03 976 A1 another premounted wiper system has become known which, inter alia, comprises a die-cast motor carrier part. The motor carrier part features an integrally shaped lateral fastening eye. On one side, this eye is yoked open so that a rubber-elastic dampening element of the type described in DE 40 36 367 A1 can be slid sideways into the opening. The free ends of the yoke tongues approach each other so that the dampening element will be squeezed slightly as it is slid in sideways and will return to its regular original shape when reaching its receiving aperture. The annular groove on the outside circumference of the dampening element and the yoke tongues which approach each other will keep the dampening element within the fastening eye.
This solution admittedly enables easy assembly of the rubber-elastic dampening element, yet introduces another disadvantage. When fastening the wiper system to the vehicle body, the screw connection passing through will squeeze the dampening element axially, with the material of the dampening element tending to escape radially. Thus, the yoke tongues of the fastening eye are under a strong radial pressure which can result in bending apart or even in rupture.
A further prefabricated windshield wiper system is disclosed in GB 2 218 622 A. There, a wiper bearing housing features an integrally shaped lateral mounting projection which opens like a yoke and is capable of receiving a dampening element of the already described type by means of sideward insertion. As already stated with regard to DE 39 03 976 A1, due to the axial compression of the dampening element, here, there will also be radial forces which act on the yoke parts and may cause the same to be bent apart or even to break off.
It is an object of this invention to develop noise-dampening or rather vibration-dampening fixing means for a windshield wiper system which permit easy assembly of the rubber-elastic dampening element, on the one hand, and ensure the required stability of the fastening eye, on the other hand.
According to this invention, this object is solved by a fixing means where a web, connected with both yoke tongues of the fastening eye, bridges the yoke opening so as to enable a rubber-elastic dampening element with its groove on the outside circumference to be slid in sideways through the yoke opening up to where it will be positioned properly within the receiving aperture.
The web bridging the yoke opening gives the fastening eye the stability required in order to prevent the yoke tongues from bending apart or from breaking off. Bridging the yoke opening enables the easy sideward insertion of the dampening element.
In case the part of a windshield wiper system which is to be fastened to the vehicle is a die casting, it will be an advantage if the fastening eye likewise is a die casting an

REFERENCES:
patent: 1892943 (1933-01-01), Geyer
patent: 3229026 (1966-01-01), Sulzer
patent: 3512226 (1970-05-01), Carlile
patent: 4424612 (1984-01-01), Muller et al.
patent: 4522378 (1985-06-01), Nelson
patent: 4704772 (1987-11-01), Kasai

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