Movable or removable closures – Stored in housing – Reciprocates vertically in and out of housing
Reexamination Certificate
2000-11-06
2003-05-06
Strimbu, Gregory J. (Department: 3634)
Movable or removable closures
Stored in housing
Reciprocates vertically in and out of housing
C049S372000
Reexamination Certificate
active
06557302
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a carrier for connecting a window pane to a window lifter comprising retaining arms which are located to both sides of the lower edge of the window pane. At least one of these retaining arms has a recess in which a window bolt can engage in order to lock the window pane. At least the upper part of at least one retaining arm is formed spring elastic and has a guide-in area.
BACKGROUND OF THE INVENTION
From DE 4423 440 A1 a carrier is known for fixing a window pane of a motor vehicle onto the guide rails of a window lifter. This carrier comprises retaining arms which are mounted on each side of the lower area of the window pane. At least one of these retaining arms has a recess in which a connecting element can engage in order to lock the window pane. At least an upper part of at least one retaining arm is formed spring elastic and supports a guide bevel directed towards the lower edge of the pane.
The connecting element for locking the window pane is already connected to the window pane prior to assembly. As connecting elements are used bolts mounted in full-length holes of the pane, elements stuck onto the panes or elements shaped out of the pane.
For assembly the connecting element is inserted into the gap between the retaining arms and engages there in the recesses. The position of the window pane is thereby fixed in this way.
In order to be able to compensate for tolerances in the parallel position of the guide rails or to undertake adjustments, in one embodiment the recesses are formed as horizontally aligned oblong hole guides. Thus the one connecting element can be fixedly mounted in the carrier and the other connecting element can be mounted in this oblong hole guide (loose bearing/fixed bearing system).
Despite these measures the device is not in a position to compensate for the tolerances which can occur between the window pane and the seal during movement of the window pane. The reason for this is that the window pane is fixed by the fixed bearing in its position relative to the vehicle door, that is to the guide of the pane in the vehicle door. In the event of unfavourable tolerance positions there can result high friction forces in the guides or in the seals of the window pane in the vehicle door.
The carrier device further has the drawback that during manufacture of vehicle doors a special carrier of the correct type has to be provided for each angular position between the travel direction of the carrier and the lower edge of the window pane.
SUMMARY OF THE INVENTION
The object of the present invention is to develop a carrier which can be used for different angular positions between the travel direction of the carrier and the lower edge of the window pane and/or is in a position to compensate the position of the window pane in the travel direction (x-direction).
According to one embodiment of the present invention, this is achieved through a retaining area designed as a horizontal oblong hole guide which is associated with one of the retaining arms, while a fastening area mounted horizontally resilient is associated with the other retaining arm.
This solution has the advantage that it is possible to compensate the tolerances both with regard to the parallel alignment of the two guide rails and the parallel alignment between the pane guide on the B-pillar and the guide rail associated with same.
Since one carrier combines both the function of guiding in the vertical direction (z-direction) and the function of resilience in the horizontal direction (x-direction) the structural design of fixing the pane is the same on both carriers of twin-cable window lifters. Thus the carriers can be constructed structurally identical and it is possible to use these also for a single-strand window lifter.
According to another embodiment of the present invention, a contour is formed in the region of the lower edge of the window pane whose cross-section is formed as a segment of a circle wherein the height of the circle segment is fixed in dependence on the angular positions to be covered between the carrier and the window pane edge and the contour rests on a support surface arranged on the carrier and wherein the width of the support surface is measured so that the support point with maximum tolerance deviations in the horizontal direction still rests on this support surface.
This embodiment is suitable for different angular positions of the carrier relative to the window pane. At the same time there is also the possibility of compensating for movement at right angles to the travel direction of the window pane or to the direction of force introduced into the window pane. Thus it is possible to make a universal carrier which is suitable for a variety of uses.
A further advantage is that no component of movement of the operating force appears parallel to the lower edge of the window pane (in the plane of the window).
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Brose Fahrzeugteile GmbH & Co. KG Coburg
Christie Parker & Hale LLP
Strimbu Gregory J.
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