Window blind for a polygonal window of a vehicle door or rear window of a motor vehicle

Abstract

Window blind (1) of a polygonal window (2) of a vehicle door or rear window of a motor vehicle, wherein the roller blind (1) consists of a knitted fabric and is arranged on a winding shaft (4) and is adjustable from a rolled-up rest position to an extended partitioning position at the window (2), in which the polygonal window (2) can be covered, wherein an upper and a lower outer edge (5, 6) of the roller blind (1) follows a shape of the frame of the window (2), wherein the roller blind (1) has an upper and lower outer edge (5, 6) following the boundary contours of the disc (2), in which a force-transmitting, low-stretch stiffening element (8, 9) is arranged between the winding shaft (4) and an extension profile (7) of the roller blind (1) located opposite the end face, wherein the respective low-stretch stiffening element (8, 9) consists of a cord, a thread or a fiber mesh which is so firmly connected to the outer edges (5, 6) of the knitted fabric of the roller blind (1) that the stiffening elements (8, 9) are each inserted into the outer edges (5, 6) of the knitted fabric by means of a loop and are firmly connected to the outer edges (5, 6) of the knitted fabric by means of an edge weld, wherein the roller blind (1) has at least two vertically oriented reinforcement inserts (15, 16) spaced apart from each other and integrated into the fabric, which are connected to the upper and lower outer edges (5, 6) of the roller blind (1) and to which the force-transmitting stiffening elements (8, 9) are attached.

Description

[0001] The invention relates to a window blind for a polygonal window of a vehicle door or a rear window of a motor vehicle.

[0002] From DE 10 2007 021 651 A1, a film, in particular a multi-layered solar control or solar control composite film, is known which is provided on its edges with a reinforcing material for partial stabilization. The reinforcing material is bonded to the film in a material-bonded manner.

[0003] A sunshade device for a vehicle roof is known from DE 10 2005 038 373 A1. The sunshade device comprises a roller blind made of a knitted fabric, mounted on a winding shaft, and adjustable from a rolled-up rest position to an extended, partitioning position on the vehicle roof. A first and a second outer edge of the roller blind follow the contours of a roof window, with the roller blind having a first and second outer edge that follow the boundary contours of the roof window, in which a guide and connecting element is arranged between the winding shaft and an extension profile of the roller blind located opposite the end face.

[0004] DE 10 2004 045 726 B3 discloses a covering device for vehicle glazing, in particular a transparent sunroof cover. The covering device comprises a flat, flexible blackout element that can be extended over the vehicle glazing. At its front end (in the direction of extension), the blackout element is connected to a tensioning element extending transversely to the direction of extension. At its end opposite the tensioning element, the blackout element is fixedly attached to the vehicle.

[0005] Further state of the art is known from DE 299 01 928 U1.

[0006] The object of the invention is to create a window blind for a polygonal window of a vehicle door or a rear window of a motor vehicle, which, when extended in the partition position, has an outer edge free of ripples.

[0007] This problem is solved according to the invention by the features of claim 1. Further advantageous features are included in the dependent claims.

[0008] The main advantages achieved with the invention are that the outer edges of the roller blind, which follow the slightly curved or straight boundary contours of the polygonal disc, have a wave-free course. According to the invention, this is achieved by the roller blind having upper and lower outer edges that follow the boundary contours of the disc, in which a force-transmitting stiffening element is arranged between the winding shaft and an extension profile of the roller blind located opposite the end face, and which is firmly connected to the outer edges of the fabric of the roller blind.

[0009] According to the invention, the stiffening elements, which are firmly connected to the upper and lower outer edges of the fabric of the roller blind, consist of a low-stretch cord or thread or a fiber braid.

[0010] To ensure a secure connection between the stiffening element and the fabric of the roller blind, the invention further provides that the fiber braid / thread / cord is connected to the outer edges of the fabric. The fiber braid / thread / cord is inserted into the edges of the fabric by means of a loop and firmly connected to the edges by edge welding. This connection of the stiffening element to the outer edges of the roller blind creates a fastening within the fabric that allows for direct force transmission via the stiffening elements in the outer edges.

[0011] According to the invention, the roller blind incorporates at least two vertically oriented, spaced-apart reinforcing inserts integrated into the knitted fabric. These inserts are connected to the upper and lower outer edges of the roller blind, and the force-transmitting stiffening elements are attached to them. These reinforcing inserts stabilize the roller blind in the plane, and their connection with the edge-side force-transmitting stiffening elements ensures an optimally smooth, undistorted edge profile when the roller blind is fully extended.

[0012] The stiffening element is positioned between the winding roller and the extension profile at the edges of the fabric in such a way that the edges of the fabric are taut when the blind is in its closed position. The integrated stiffening elements in the outer edges of the blind, which are pre-curved to follow the slightly curved edges of the glass pane, ensure a direct force transmission between the winding shaft and the extension profile. This keeps the outer edges taut in the extended position, preventing any waviness and guaranteeing a perfectly flat fit against the glass pane.

[0013] At the front of the roller blind, vertical end sections are provided on both the winding roller and the extension profile, which are connected to the upper and lower pre-curved outer edges of the knitted fabric. The outer edges of the roller blind lie outside a so-called force transmission surface of the extended roller blind, which is formed between the vertical edge sections of the knitted fabric on the extension profile and the winding roller. Through the force-transmitting stiffening elements according to the invention in the outer edges of the roller blind, a force transmission is achieved outside this force transmission surface between the winding shaft and the extension profile via the stiffening elements arranged at the edges.

[0014] To achieve a smooth, ripple-free edge profile for the roller blind, the invention further provides that the force-transmitting stiffening element at the edge preferably consists of a higher-strength material than the fabric of the roller blind. In particular, the invention provides that the force-transmitting, low-stretch stiffening element at the edges of the roller blind consists of a polyamide fiber braid or similar material. According to the invention, a para-aramid or a Technora can also be used as the stiffening element. ® -Material will be provided.

[0015] An embodiment of the invention is shown in the drawings and is described in more detail below.

[0016] They show: Fig. 1. A view of a roller blind installed in the vehicle in front of a rear side window of a vehicle door, Fig. 2 a front view of the roller blind made of a knitted fabric with front winding shaft and opposite rear extension profile, Fig. 3 a diagrammatic representation from above of a smooth outer edge of a roller blind provided with an edge-side stiffening element and Fig. 4 A front view of a roller blind with the force flow area of ​​the knitted fabric between the winding shaft and the draw profile shown in dashed lines.

[0017] A window roller blind 1 for a polygonal window 2 in a vehicle door 3 consists of a knitted fabric and is arranged on a winding shaft 4. The roller blind 1 can be adjusted from a rest position, rolled up on the winding shaft 4, to an extended, partitioned position I, which in Fig. Figure 1 is shown in more detail. In this position I, the polygonal window 2 is covered, and an upper and a lower outer edge 5, 6 of the roller blind 1 follow the shape of the frame for the side window 2, which can have a curved or a straight window frame or boundary contours. In the exemplary embodiment, the window 2 is formed by a triangular side window.

[0018] To ensure optimal sealing of the window 2, the roller blind 1 has upper and lower outer edges 5 and 6 that follow the boundary contours of the window 2 and are preferably slightly curved outwards in the plane. In these outer edges 5 and 6, between the winding roller 4 and the opposing extension profile 7, which is connected to the roller blind 1, a force-transmitting, low-stretch stiffening element 8, 9 is arranged in each case. This stiffening element is firmly connected to the outer edges 5 and 6 of the fabric.

[0019] This stiffening element 8, 9 consists of a cord, a thread, a fiber braid, or a force transmission element acting in the same way. These edge-side stiffening elements 8, 9 keep the edges 5, 6 of the roller blind 1 taut in the partition position I.

[0020] A rear vertical edge section 10 of the roller blind 1 is clamped to the extension profile 7, and a front vertical edge section 11 of the roller blind 1 – viewed with respect to the direction of travel F – is clamped to the winding roller 4. These clamped edge sections 10 and 11 form a so-called force transmission surface K, which is outlined with a dashed line in Fig.Figure 4 shows that this force flow surface K is provided between the winding shaft 4 and the extension profile 7 and has straight boundary lines 12 and 14, which run inside at distances a and b to the outer edges 5, 6 of the roller blind 1, so that these outer edges 5, 6 lie outside the force flow surface K and thus no tension can be built up in these outer edges 5, 6 without stiffening elements 8, 9.

[0021] Vertical reinforcing inserts 15, 16 are incorporated into the roller blind 1, which keep the knitted fabric in a flat shape. The edge-side stiffening elements 8, 9 are connected to the end faces of the reinforcing inserts 15, 16.

[0022] The stiffening elements 8, 9 in the outer edges 5, 6 of the roller blind 1 are made of a higher strength material than the knitted fabric of the roller blind 1. In particular, the stiffening element 8, 9 consists of a polyamide fiber braid, which is inserted into the edges 5, 6 of the knitted fabric by means of a loop and then subsequently connected to the edges 5, 6 of the knitted fabric by means of an edge welding.

[0023] Furthermore, the stiffening element 8, 9 can also be made of a Para-Armid or a Technora® material.

[0024] The stiffening elements 8, 9 in the outer edges 5, 6 of the knitted fabric are intended to transmit force between the winding shaft 4 and the draw-out profile 7 via the outer edges 5, 6 of the knitted section. To withstand thermal influences, a heat-resistant material must be selected, such as polyamide fiber braid (braided fishing line). These braided lines are characterized by high thermal resistance and minimal elongation. Para-aramid fibers such as Kevlar or Technora can also be used if even greater resistance is required. ® .

[0025] The thread, cord, or braid must be firmly attached to the knitted fabric or its edge weld. This can be achieved by sewing in the fiber braid / thread. If an edge weld is already in place, a subsequent edge weld is also possible after looping or inserting the thread or braid.

Claims

[1] Window blind (1) of a polygonal window (2) of a vehicle door or rear window of a motor vehicle, wherein the roller blind (1) consists of a knitted fabric and is arranged on a winding shaft (4) and is adjustable from a rolled-up rest position to an extended partitioning position at the window (2), in which the polygonal window (2) can be covered, wherein an upper and a lower outer edge (5, 6) of the roller blind (1) follows a shape of the frame of the window (2), wherein the roller blind (1) has an upper and lower outer edge (5, 6) following the boundary contours of the disc (2), in which a force-transmitting, low-stretch stiffening element (8, 9) is arranged between the winding shaft (4) and an extension profile (7) of the roller blind (1) located opposite the end face, wherein the respective low-stretch stiffening element (8, 9) consists of a cord, a thread or a fiber mesh which is so firmly connected to the outer edges (5, 6) of the knitted fabric of the roller blind (1) that the stiffening elements (8, 9) are each inserted into the outer edges (5, 6) of the knitted fabric by means of a loop and are firmly connected to the outer edges (5, 6) of the knitted fabric by means of an edge weld, wherein the roller blind (1) has at least two vertically oriented reinforcement inserts (15, 16) spaced apart from each other and integrated into the fabric, which are connected to the upper and lower outer edges (5, 6) of the roller blind (1) and to which the force-transmitting stiffening elements (8, 9) are attached. [2] Window blind according to claim 1, characterized by, that the stiffening elements (8, 9) between the winding roller (4) and the extension profile (7) in the edges (5, 6) of the knitted fabric are arranged such that, in order to assume the partitioning position (I) of the roller blind (1), the edges (5, 6) of the knitted fabric are arranged tautly. [3] Window blind according to claim 1 or 2, characterized by , that on the front side of the roller blind a vertical edge section (10, 11) is provided on the winding roller (4) and on the extension profile (7), which are connected to the upper and lower outer edge (5, 6) of the knitted fabric. [4] Window blind according to claims 1, 2 or 3, characterized by, that the upper and lower outer edges (5, 6) of the roller blind (1) lie at a distance (a and b) outside of straight outer edges (12, 14) of a force flow surface (K) of the roller blind (1) stretched in the partition position (I), which is formed between the vertical edge sections (10, 11) of the knitted fabric on the extension profile (7) and on the winding shaft (4). [5] Window blind according to one of the preceding claims, characterized by , that the stiffening elements (8, 9) in the outer edges (5, 6) of the roller blind (1) are made of a higher strength material than the knitted fabric of the roller blind (1). [6] Window blind according to one of the preceding claims, characterized by , that the force-transmitting stiffening element (8, 9) in the outer edges (5, 6) of the roller blind (1) consists of a polyamide fiber mesh. [7] Window blind according to one of the preceding claims, characterized by , that the stiffening element (8, 9) is made of a para-aramid material.

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