US 4,836,263 AGranted

Window shade or screen apparatus, particularly for vehicle windows

AssigneeBaumeister & Gatler

InventorEduard Ament

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Abstract

A window screen or shade, in particular for motor vehicles, includes a wind-up roller biassed in the wind-up direction that is rotatably journalled in a base and on which shade or screen web is secured with one end. The other edge of the web is mounted in an end rail, which is engaged by at least one extension element of an extension structure located in the vicinity of the wind-up roller, in order to unwind the web counter to the biassing of the spring mechanism for the wind-up roller. To enable dispensing with additional guide elements for the end rail, which support the window shade in the direction at right angles to the spread-open web, the extension element is substantially rigid, at least in a direction at right angles to the plane of the web defined by the extended web, and when the web is extended can move in a plane parallel to this plane of the web.

A power operated window shade apparatus for a rear window in an automotive vehicle comprising:

a base support (4);
a screen web (11) having first and second ends;
a web wind-up roller (8) rotatably disposed on said base support, the first end of said screen web being secured to said web wind-up roller;
springs means (13, 14) for biasing said web wind-up roller to wind said screen web on said web wind-up roller;
and end support rail (9) to which the second end of said screen web is secured, said end support rail having a continuous groove (37) disposed therein;
web extension means engaged with said end support rail for extending said screen web and thereby defining a plane, said web extension means comprising a pair of elongated lever elements (15) having first and second ends, the first ends of said lever elements being pivotably secured to said base support and being pivotable back and forth between a retracted position and an extended position, the second ends of said lever elements having an extension element (33) disposed in and slidably retained within said continuous groove of said end support rail;
said lever elements being resistant to bending in a plane perpendicular to said plane of said screen web when said screen web is extended and being movable in a plane parallel to said plane of said screen web when said screen web is extended;
power operating mean (31) coupled to said lever elements, said power operating means pivoting said lever elements in synchronism for moving said screen web in said retracted and extended positions;
and said lever elements solely guiding said end support rail, moving said end support rail between said retracted positions in which said end support rail is adjacent said web wind-up roller, and said extended position in which said screen web is extended, and retaining said end support rail and hence said screen web in a predetermined orientation with respect to a plane perpendicular to said plane of said screen web when said screen web is extended and parallel to said web wind-up roller.

6 more elements

Abstract

Claims20