Shading device for a motor vehicle

Abstract

A shading device for a motor vehicle comprising a flexible shading structure (11, 11a, 11b) that can be moved between a compactly stored rest position and a flat, extended protective position, a dimensionally stable extension profile (9 to 9r) arranged on a front end region of the shading structure (11, 11a, 11b) in the extension direction, and a movably mounted support arm assembly connected to the extension profile (9 to 9r) and providing positive guidance for the extension profile (9 to 9r) when the shading structure (11 to 11b) is moved between the rest position and the protective position, wherein the support arm assembly is positively coupled to the extension profile (9 to 9r) in such a way that the extension profile (9 to 9r) can be moved into non-parallel end positions corresponding to the rest position and the protective position of the shading structure (11 to 11b). shading structure (11 to 11b) correspond,wherein the support arm arrangement is designed as a pivot lever arrangement with at least two pivot lever joints (14 to 14r, 15 to 15r) which each engage at one end bearing points on the extension profile (9 to 9r) spaced apart from each other in the longitudinal direction of the extension profile (9 to 9r), wherein the pivot lever joints (14 to 14r, 15 to 15r) have different lengths, characterized in that the pivot lever joints (14 to 14r, 15 to 15r) are connected at the other end to vehicle-mounted, stationary pivot joints (16, 17; D1 to D, 14 are stored.

Description

[0001] The invention relates to a shading device for a motor vehicle according to the preamble of claim 1.

[0002] A shading device is known from DE 20 2007 004 175 U1. The shading device comprises a vehicle roller blind for a side door of a passenger car, in which a flexible shading strip is held on a winding shaft so that it can be wound up and unwound. The shading strip is connected at its front end region (in the unwinding direction) to a rigid extension profile, which is supported by a support rod that moves the extension profile between a wound-up rest position of the shading strip and an upwardly extended shading position.

[0003] DE 103 34 695 A1 discloses a roller blind arrangement for a vehicle window with a flexible shading strip that is held on a winding shaft so that it can be wound up and unwound. The shading strip can be moved vertically along guide rails mounted on the side door frame of a side door by means of lever elements.

[0004] Another shading device is known from DE 20 2007 008 178 U1. This known shading device is designed to shade a side window of a passenger car. A flexible shading element is mounted on a winding shaft so that it can be wound and unwound. The shading element has a dimensionally stable extension profile at its front end (in the extension direction), which is supported by a support arm arrangement in the form of at least one telescopic rod. At least one telescopic rod is driven by a drive system to move the extension profile between the rest position and the shading position of the shading element.

[0005] From EP 0 240 747 A2, a shading device for the rear window of a passenger car is known. The known shading device has a flexible shading element that is mounted on a winding shaft so that it can be wound and unwound. This shading element also has a dimensionally stable extension profile at its front end region in the extension direction. A pivoting lever arm assembly engages the extension profile, which guides the extension profile between a rest position of the shading element and a shading position. The pivoting lever arm assembly has two pivoting lever arms that are movable in opposite directions and are mirror-symmetrical to each other. These pivoting lever arms are moved by means of a drive system. The object of the invention is to provide a shading device of the type mentioned above that enables at least largely complete shading of asymmetrically shaped vehicle windows.

[0006] This problem is solved by the features of claim 1. The solution according to the invention allows the extension profile to be inclined in an extended end position, so that the extension profile can follow the inclined upper edge regions of a corresponding vehicle window. The support arm arrangement also ensures that the shading structure can be moved between its rest position and its protective position without the need for lateral, vehicle-mounted guides for the extension profile. The extension profile can be straight or curved. Preferably, the extension profile, with its leading edge contour in the extension direction, follows an edge contour of an upper edge region of the vehicle window to be shaded. The shading device according to the invention is particularly advantageous for vehicle side windows, vehicle windshields, or vehicle rear windows of passenger cars.The solution according to the invention enables, in addition to a flush-mounted shading position of the extension profile, an at least largely horizontal orientation of the extension profile in a rest position, in which the extension profile is preferably recessed flush with a vehicle interior trim panel. An arrangement of the extension profile that is recessed at least largely flush with a vehicle interior trim panel in the rest position corresponds to an alignment of the extension profile parallel or aligned with a lower edge area of ​​the corresponding vehicle window. The support arm arrangement can be designed with several telescopically extendable and retractable telescopic profiles aligned parallel to each other. Preferably, the telescopically extendable and retractable profiles have different extension lengths in order to achieve the non-parallel end position of the extension profile.The telescopic profiles are supported at one end by the extension profile and at the other end by the vehicle side. The solution according to the invention is particularly advantageous if the flexible shading structure is held on a conical winding shaft that can be wound and unwound and is rotatably mounted on the vehicle side. The shading device according to the invention can have a shading structure that can be manually moved between the rest position and the protected position. Alternatively, a drive system can be assigned to the shading structure.

[0007] According to the invention, the support arm arrangement is designed as a pivot lever arrangement with at least two pivot lever joints. Two pivot lever joints are provided, movably mounted at least largely parallel to a mounting plane of the shading structure and spaced apart from each other. Each pivot lever joint has at least one dimensionally stable lever arm, which is pivotally mounted at its opposite end faces about a pivot axis on the extension profile and / or on another lever arm and / or on a vehicle-side base area. The pivot axes of the lever arms are aligned parallel to each other and extend orthogonally to a pivot plane of the respective pivot lever joint and thus at least largely orthogonally to a mounting plane of the shading structure.

[0008] According to the invention, the pivot lever assembly has at least two pivot lever joints, each of which engages at one end at bearing points on the extension profile spaced apart from each other in the longitudinal direction of the extension profile, the pivot lever joints having different lengths. The pivot lever joints each have one or two lever arms as defined in the invention. In an embodiment of the invention, a drive system is provided to drive the support arm assembly for moving the extension profile between its two end positions. The drive system preferably has at least one electric drive motor. The drive system is designed to drive the support arm assembly in both directions, i.e., both from a rest position to the shading position and vice versa.

[0009] In a further embodiment of the invention, the bearing points are pivot joints, each with one degree of freedom, which define a rotational movement of the pivot lever joints in a common pivot plane. The rotational movement occurs about the pivot axes of the lever arms described above, i.e., the pivot levers.

[0010] In a further embodiment of the invention, at least one pivot lever joint has an articulating joint movable in the common pivot plane and is rotatably mounted at its end on a pivot bearing that is fixed to the vehicle in the mounted operating state. The pivot lever joint preferably consists of two lever arms (pivot levers) connected to each other by means of the articulating joint. The articulating joint defines a pivot joint with a pivot axis as defined in the invention. According to the invention, the pivot bearing is also referred to as a rotary joint.

[0011] In a further embodiment of the invention, the extension profile has a contact section designed for sliding contact with a vehicle-mounted window, wherein the pivot lever arrangement is designed to be spring-elastic orthogonal to the common pivot plane such that the extension profile slides along the window, supported at least partially, when shifted between its end positions. This provides additional stabilization for the shading device during the extension or retraction of the extension profile and thus of the shading structure.

[0012] In a further embodiment of the invention, the drive system is coupled directly or indirectly to the pivot lever assembly and, in particular, comprises at least one drive transmission train for transmitting tensile and / or compressive forces. Preferably, a cable system, a threaded cable system, a belt drive, or the like is provided as the drive transmission train. Direct coupling of the drive system to the pivot lever assembly refers in particular to a direct mechanical connection between a drive motor and a gearbox in the region of a pivot lever joint. Indirect coupling refers in particular to a connection of the at least one pivot lever joint of the pivot lever assembly via a transmission train for transmitting tensile and / or compressive forces or via a mechanically designed coupling of a different type. Advantageously, the drive transmission train is designed to be continuous.

[0013] In a further embodiment of the invention, a mechanical synchronizing device is provided which positively couples the at least two pivot lever joints for common, synchronous or opposing pivoting movements. This ensures that when one pivot lever joint is directly driven, the other pivot lever joint moves synchronously.

[0014] In a further embodiment of the invention, the drive system comprises at least one linear guide along which a guide joint of the pivot lever joint can be linearly displaced in order to move the at least one pivot lever joint between a folded rest position and an unfolded functional position, which correspond to the end positions of the extension profile. The linear displacement preferably occurs transversely to an extension direction of the shading structure. A corresponding linear guide can be provided either in the area of ​​the extension profile or on the vehicle side in the area of ​​a vehicle interior trim panel. Preferably, in the case of a vehicle-side arrangement, the linear guide extends parallel to a rotational axis of a winding shaft on which the shading structure is held for winding and unwinding.

[0015] In a further embodiment of the invention, the drive system comprises a crank mechanism that is mechanically coupled directly or indirectly to the at least one pivot joint. The crank mechanism preferably has at least one crank arm that is aligned coaxially or parallel to an axis of rotation of a pivot joint of a lever arm of the at least one pivot joint. The crank arm can drive the lever arm directly by means of a coaxial and rotationally fixed arrangement in the region of the pivot joint, or indirectly by means of an interposed further drive transmission train and / or a synchronizing device.

[0016] Further advantages and features of the invention will become apparent from the claims. Preferred embodiments of the invention are described below and illustrated with reference to the drawings. Fig. Figure 1 schematically shows the interior of a passenger car with a side window, to which an embodiment of a shading device according to the invention is assigned. Fig. 2 a first embodiment of a shading device according to the invention Fig. 1, Fig. 3 another embodiment of a shading device according to the invention similar Fig. 2, Fig. 4 another embodiment of a shading device according to the invention similar Fig. 3, Fig. 5 the shading device according to Fig. 4 in a rest position of a shading structure and an extension profile, Fig. 6 and Fig. 7 schematically a further embodiment of a shading device according to the invention in two different end positions, Fig. 8 and Fig. 9 another embodiment of a shading device according to the invention in two different end positions, Fig. 10 and Fig. 11 another embodiment of a shading device according to the invention similar to the Fig. 8 and Fig. 9 in two different end positions, Fig. 12 and Fig. 13 in two different end positions a further embodiment of a shading device according to the invention, Fig. 14 and Fig. 15 in two different end positions a further embodiment of a shading device according to the invention, Fig. 16 and Fig. 17 another embodiment of a shading device according to the invention in two different end positions, Fig. 18 and Fig. 19 another embodiment of a shading device according to the invention in two different end positions, Fig. 20 and Fig. 21 another embodiment of a shading device according to the invention in two different end positions, Fig. 22 and Fig. 23 a further embodiment of a shading device according to the invention in two different end positions, Fig. 24 and Fig. 25 another embodiment of a shading device according to the invention in two different end positions, Fig. 26 and Fig. 27 another embodiment of a shading device according to the invention in two different end positions, Fig. 28 and Fig. 29 another embodiment of a shading device according to the invention in two different end positions, Fig. 30 and Fig. 31 another embodiment of a shading device according to the invention in two different end positions, and Fig. 32 and Fig. 33 a final embodiment of a shading device according to the invention in two different end positions.

[0017] A passenger car exhibits according to Fig. Figure 1 shows a vehicle interior F, in which front vehicle seats and a rear rear bench seat are located. The rear rear bench seat is flanked on opposite longitudinal sides of the vehicle by a rear side door 1 on each side. In Fig. Figure 1 shows only the left rear side door 1, as viewed from the normal direction of travel of the passenger car. The opposite rear side door is identically designed and equipped in the same way, so that with regard to the right rear side door, which is not shown, reference is made to the following descriptions of the left rear side door 1. The side door 1 has a side window arrangement 2, 3, comprising a main side window 2 and a secondary side window 3 adjoining the main side window to the rear. The main side window 2 and the secondary side window 3 are separated from each other by a window frame section 6 extending vertically in the direction of the vehicle. The main side window 2 is bounded downwards by a lower window frame section 5, forwards by a front window frame section 7 extending vertically in the direction of the vehicle, and upwards by a curved upper window frame section 4.The upper window frame section 4 extends over the entire length of the side door 1 and thus over both an upper edge region of the secondary side window 3 and an upper edge region of the main side window 2. The curved profile of the upper window frame section 4 extends forward from an upper end region of the left side window frame section 6 in the longitudinal direction of the vehicle and upwards in the vertical direction of the vehicle, with a profile that rises obliquely relative to a horizontal longitudinal axis of the vehicle and is at least slightly convexly curved.

[0018] In order to be able to shade the side window arrangement 2, 3 of the side door 1 if necessary, a following is shown based on the Fig. Two shading devices, described in more detail below, are provided. With respect to the part of the shading device that shades the main side window 2, it is concealed behind an interior door panel in its non-use position below, or at least largely flush with, the lower frame section 5 of the main side window 2. The corresponding functional parts and sections of the shading device are fixed to the door and thus to the vehicle, attached to corresponding body structural parts of the side door 1. The interior door panel 8 is mounted – as seen from the vehicle interior F – to the body structural parts of the side door 1 and to the functional parts and sections of the shading device in such a way that the interior door panel 8 conceals the corresponding functional parts and sections of the shading device in its non-use position.

[0019] The shading device according to Fig. 3 or the shading device according to the Fig. 4 and Fig. 5 are alternatives to the shading device according to Fig. 2 in the area of ​​side door 1 according to Fig. 1 mountable and usable, wherein the structure and arrangement of the shading device according to Fig. 3 or after the Fig. 4 and Fig. 5 of the shading device according to Fig. 2 corresponds to the above, with the exception of the differences described below. To avoid repetition, the arrangement and construction of the shading devices are therefore described in accordance with the following. Fig. 3 or Fig. 4, Fig. 5. In addition to the explanations regarding the shading device according to Fig. 2 referred.

[0020] The shading device according to Fig. 2 features a flexible shading structure 11, which is held on a winding shaft 13 so that it can be wound and unwound. The flexible shading structure 11 is made of a textile material or a plastic film material. The winding shaft 13 is rotatably mounted below the lower window frame section 5 of the side window assembly 2, 3, and is thus fixed to the door and vehicle. One axis of rotation of the winding shaft 13 extends at least largely in the longitudinal direction of the vehicle. The flexible shading structure 11 is provided at its front end region in the clamping direction with a dimensionally stable extension profile 9, which according to Fig. 2 has a curved upper edge contour. The dimensionally stable extension profile 9 is firmly connected to the front end region of the shading structure 11.

[0021] The extension profile 9 is supported by two pivot lever joints 14, 15 spaced apart from each other in the longitudinal direction of the vehicle, which form a support arm arrangement for the extension profile 9 according to the invention. Each pivot lever joint 14, 15 has two lever arms 18, 19 and 20, 21 respectively, which are connected to each other via a hinge joint 22, 23. A lower lever arm 18, 20 of each pivot lever joint 14, 15 is fixedly mounted to the door at its lower end region via a pivot joint 16, 17. The two hinge joints 16, 17 and the hinge joints 22, 23 have parallel axes of rotation which are aligned orthogonally to a common pivot plane of the two pivot lever joints 14, 15. Each upper lever arm 19, 21 is also pivotally mounted on the extension profile 9 by means of a further rotary joint, in a manner not shown in detail.These pivot joints also have axes of rotation that are aligned parallel to the axes of rotation of the articulated joints 22, 23 and the pivot joints 16, 17.

[0022] Both pivot lever joints 14, 15 are positively guided by means of a drive system described in more detail below and are pivotally movable synchronously to each other, with the articulated joints 22, 23 performing an articulated movement towards each other - starting from the in Fig. 2 shown upper end position of the extension profile 9, which corresponds to a shading position of the shading structure 11.

[0023] For this purpose, each lower lever arm 18, 20 of the two pivot lever joints 14, 15 is associated with a lever extension, which is not further specified and is non-rotatably connected to the lower lever arm 18, 20. The respective lever extension is guided linearly in a linear guide 29, 30 extending parallel to the axis of rotation of the winding shaft 13 by means of a guide joint 25, 26. The respective lever extension is designed as a telescopically collapsible or extendable telescopic rod. A cable system S1 is provided for moving the respective guide joint 25 of the respective telescopic rod of the two pivot lever joints 14, 15. This system comprises a circumferential cable assembly 28 for the upper linear guide 29 and another circumferential cable assembly 27 for the lower linear guide 30. Each cable assembly has a cable held on a pulley.The two pulleys for the two cable pull arrangements of the cable pull system S1 are aligned coaxially with each other and coaxially with the axis of rotation of the winding shaft 13. Both pulleys are driven by a common electric drive motor M, which is also part of the drive system. The cable pull system S1 is also part of the drive system, enabling the shading structure 11 and the extension profile 9 to be moved between different end positions, corresponding to a rest position and a shading position.

[0024] When the telescopic rod is connected to the guide joint 25 of the left pivot lever joint 14 - as shown in the illustration of the Fig. As the linear guide 29 is moved to the left, the guide joint 26 of the telescopic rod of the right pivot lever joint 15 in the drawing is necessarily displaced to the right. This causes the articulated joints 22, 23 to fold inwards towards the center of the shading structure 11 in the common pivot plane of the two pivot lever joints 14, 15, inevitably pulling the extension profile 9 downwards.

[0025] The two pivot lever joints 14, 15 have different lengths, so that the extension profile 9, in the extended position of the two pivot lever joints 14, 15, is inclined relative to an axis of rotation of the winding shaft 13 and thus not parallel. Additionally, the arrangement of the vehicle-mounted swivel joints and the orientation of the lever arms of the pivot lever joints in an end position pointing upwards also contribute to the inclined position of the extension profile 9 in the upper end position, ensuring that the extension profile 9, in the extended end position of the shading element 11, follows the upper window frame section 4 parallel to the main window. This ensures complete shading of the main side window 2 when the shading element 11 is extended.The shading structure 11 is either designed to be elastically flexible in the extension direction, or the winding shaft 13 is designed conically, which inevitably results in a correspondingly inclined development of the front end region of the shading structure 11 and thus a tracking of the shading structure 11 to the displacement of the extension profile 9.

[0026] In addition to the different lengths of the pivot lever joints 14, 15, the angular orientation and the extendable length of the telescopic rods for the different guide joints 25, 26 are also matched to the required pivoting movements of the pivot lever joints 14, 15 such that the extension profile 9 in the rest position according to Fig. 1 is laid parallel to the axis of rotation of the winding shaft 13.

[0027] The drive system with the electric drive motor M is additionally designed to move a secondary shading structure 24 transversely to the displacement movement of the main shading structure 11. For this purpose, the electric drive motor M drives a further cable pulley assembly 31, which includes a cable pulley aligned coaxially to the two cable pulleys of the cable pulley system S1 and driven by the electric drive motor M. The cable pulley assembly 31 drives a linear guide element 32, which is linearly displaceable in the longitudinal direction of the vehicle and is rigidly connected to an extension rod that is oriented in the vertical direction of the vehicle and is attached to a front end region of the flexible secondary shading structure 24. The secondary shading structure 24 is mounted on a rotatably mounted winding shaft 12, which is rotatably mounted in the window frame section 6, which is oriented in the vertical direction of the vehicle.The secondary shading structure 24 is moved synchronously with the shading structure 11 into a shading position or a rest position (. Fig. 1) transferred.

[0028] A corresponding secondary shading structure 24 with an associated drive by the cable pull arrangement 31 is provided in the same way with the shading device according to Fig. 3 provided. Since the drive of this secondary shading structure 24 in the embodiment according to Fig. Since section 3 is identically designed, to avoid repetition, the explanations are referred to as follows: Fig. 2 referred.

[0029] The shading device according to the Fig. 4 and Fig. 5 dispenses with an additional secondary shading structure. The shading device is designed such that the shading structure 11b already provides at least largely complete shading of an undivided side pane of a side door, which is otherwise analogous to side door 1 according to Fig. 1 is executed (omitting a window frame section 6 and dividing the side window arrangement into two side window sections).

[0030] Functionally equivalent parts or sections of the shading devices according to the Fig. 3 and Fig. 4, Fig. 5 are provided with the same reference numerals with the addition of the letters a or b.

[0031] Key difference in the shading device according to Fig. 3. The two linearly movable guide joints 25a and 26a of the telescopic rods of the two pivot lever joints 14a and 15a are linearly displaceable in a single, common linear guide 29a, which is aligned parallel to the axis of rotation of the winding shaft 13. Nevertheless, each guide joint 25a, 26a is assigned its own circumferential cable pull arrangement of the cable pull system S2, as shown in the Fig. 3 is removable. The two different cable pull arrangements are analogous to the embodiment according to Fig. 2 each equipped with a separate pulley, which are aligned coaxially to each other and coaxially to a drive shaft of the electric drive motor M and can be driven together by the electric drive motor M. For guiding the cable pull arrangement for the in Fig. 3. Additional deflection pulleys are provided for the right guide joint 26a to avoid an overlap with the cable pull arrangement for the left guide joint 25a.

[0032] In the embodiment according to the Fig. 4 and Fig. Figure 5 provides a particularly compact arrangement of the drive system, including its associated cable system S3. The two guide joints 25b, 26b are arranged analogously to the embodiment shown in Figure 5. Fig. 3 Only a single, common linear guide 29b is provided, and the two cable pull arrangements of the cable pull system S3 for linear displacement of the two guide joints 26b, 25b are compactly positioned below the linear guide 29b. Each cable pull arrangement of the cable pull system S3 has a cable pulley that is coaxially aligned with each other and can be driven together by a drive shaft of the electric drive motor M. The drive shaft and the axes of rotation of the cable pulleys of the cable pull system S3 are parallel to the axis of rotation of the unspecified winding shaft of the shading structure 11b and are positioned below the linear guide 29b. Analogous to the embodiments described above, the opposing guide joints 25b, 26b are moved in opposite directions and synchronously with each other.The angles of the telescopic lever extensions of the two pivot lever joints 14b, 15b are designed differently relative to the respective lower lever arms. The extension lengths of the telescopic rods are also different to achieve the desired non-parallel displacement of the extension profile 9b between its two end positions. The two pulleys of the cable system S3 also have different diameters to allow for different displacement paths for the two guide joints 25b, 26b, despite identical rotational speed.

[0033] Based on the Fig. Figure 5 shows the lower end position of the extension profile 9b, in which the pivot lever joints 14b and 15b have reached their folded end position.

[0034] The extended alignment of the pivot lever joints 14, 15; 14a, 15a; 14b, 15b of all embodiments according to the Fig. 1 to 5 is designed in such a way that no self-locking occurs in the area of ​​the articulated joints as soon as the articulated joints are moved inwards.

[0035] The following is based on the Fig. The different embodiments of the shading devices described in Figures 6 to 33 all adopt the basic design of a support arm arrangement for the respective extension profile 9c to 9r by means of two spaced-apart pivot lever joints 14c to 14r and 15c to 15r, each formed by two lever arms connected to each other via a hinge joint, in the form shown in the figures. Fig. Sections 1 to 5 were described in detail above. To avoid repetition, we refer to the explanations in section 1. Fig. References are made to 1 to 5. All shading devices in accordance with the Fig. 6 to 33 are for shading a side window of a side door of a passenger car, analogous to the design according to the Fig. 4 and Fig. 5. The embodiments according to the Fig. Figures 6 to 33 focus on the positive guidance of the pivot lever joints 14c to 14r and 15c to 15r for displacing the respective extension profile 9c to 9r between the two end positions. Due to this focus on the drive function, the illustration of the respective shading structure and a winding shaft on which the shading structure is held for winding and unwinding has been omitted. The corresponding shading structure and the associated winding shaft can be designed and arranged in the same way as previously described in the embodiments of the Fig. 1 to 5 were described.

[0036] Essential common functional features of all embodiments according to the Fig. 6 and Fig. 33. It is required that the drive forces of the electric drive motor M be transmitted to the pivot joints 14c to 14r and 15c to 15r, and that the drive forces be transmitted synchronously to both pivot joints 14c to 14r and 15c to 15r. This transmission occurs either directly to a single pivot joint in the area of ​​the respective door-fixed lower pivot joint and synchronously coupled to the other pivot joint, or the drive forces of the electric drive motor M are transmitted simultaneously to both pivot joints in the area of ​​the lower, door-fixed pivot joints via corresponding drive transmission lines. The lower, door-fixed, and thus vehicle-fixed, i.e., stationary, pivot joints D1 to D 14 are in all embodiments according to the Fig. 6 to 33 are present in the same way.

[0037] In the embodiment according to the Fig. 6 and Fig. 7. The drive forces of the electric drive motor M are transmitted via a circulating cable S4 to the left lower pivot joint D1 of the left swivel lever joint 14c. A deflection pulley of the cable S4 is designed to be coaxial and rotationally fixed relative to the lower lever arm of the swivel lever joint 14c. Both swivel lever joints 14c and 15c have lever extensions projecting from their respective pivot joint D1, which are coupled to each other via a synchronizing device in the form of a dimensionally stable connecting rod K1.

[0038] In all versions according to the Fig. Figures 6 to 33 each contain two figures, the first figure representing an upper end position corresponding to a shading position and the second figure representing a lower end position corresponding to a rest position of the shading structure of the extension profile 19c to 19r.

[0039] The embodiment according to the Fig. 8 and Fig. 9 largely corresponds to the embodiment according to the Fig. 6 and Fig. 7 with the difference that a cable pull system S5, driven by the electric drive motor M, engages at each end on the two lever extensions of the two pivot lever joints 14d, 15d, which are coupled to each other via the connecting rod K2. This results in an approximately triangular arrangement of the cable pull system S5 with one drive pulley in the area of ​​the electric drive motor M and two deflection pulleys in the area of ​​the opposing pivot joints D2.

[0040] The embodiment according to the Fig. 10 and Fig. 11 largely corresponds to the embodiment according to the Fig. 8 and Fig. 9 with the difference that the synchronizing device between the two lever extensions of the two pivot lever joints 14e and 15e is formed by a coupling cable K3, which, unlike the coupling rod K2, is designed to be flexible. The cable pull system S6 is designed such that the coupling cable K3 is kept under constant tension.

[0041] In the embodiment according to the Fig. 12 and Fig. 13. Instead of a cable system, a crank mechanism is provided for transmitting the drive forces of the electric drive motor M. This crank mechanism comprises a crank arm W driven by the electric drive motor M. The crank arm W is coupled to a connecting rod, which simultaneously serves as a synchronizing device and forms a connecting rod K4 for the two lever extensions of the two pivot lever joints 14f, 15f, which project from the respective door-fixed pivot joints D4.

[0042] In the embodiment according to the Fig. 14 and Fig. 15. In the area of ​​the pivot joints D5, the two lever extensions of the two pivot lever joints 14g and 15g themselves function as crank arms, with each lever extension being coupled on one side to end sections of a dimensionally stable coupling rod K5, which takes on the function of the associated crank rod. In this embodiment, the drive forces of the electric drive motor M are transmitted to the pivot joint D5 of the left pivot lever joint 14g by means of a circulating cable S7, analogous to the embodiment according to the Fig. 6 and Fig. 7.

[0043] The embodiment according to the Fig. 16 and Fig. 17 takes over the synchronous coupling function of the two pivot lever joints 14h and 15h by means of a dimensionally stable coupling rod K6 designed as a crank rod from the embodiment according to the Fig. 14 and Fig. 15. In contrast to the embodiment according to the Fig. 14 and Fig. 15 is used in the embodiment according to the Fig. 16 and Fig. 17 the coupling rod K6, however, is driven directly by a crank drive, in that the coupling rod K6 is connected to a crank rocker W1, which in turn is driven by a circulating cable pull S8 by means of the electric drive motor M.

[0044] In the embodiment according to the Fig. 18 and Fig. 19 The electric drive motor M directly drives a double-acting crank arm W2, which is coupled via two crank pins opposite each other relative to the axis of rotation of the crank arm W2 to a rigid connecting rod K7, K8. The connecting rod K8 is coupled to the lever extension of the left pivot joint 14i, which is also designed as a crank arm. The connecting rod K7 is coupled to a crank arm extension of the right pivot joint 15i.

[0045] The embodiment according to the Fig. 20 and Fig. 21 largely corresponds to the embodiment according to the Fig. 12 and Fig. 13 with the difference that the connecting rod K9 is coupled to the respective lever extensions of the pivot lever joints 14k via coupling joints, which in the embodiment according to the Fig. 16 and Fig. 17. Corresponding pivot pins of the lever extensions of the two pivot lever joints 14k, 15k can, analogous to the lever extensions of the pivot lever joints 14h, 15h, perform linear movements relative to the connecting rod K9 or K6 in addition to rotary movements.

[0046] The embodiment according to the Fig. 22 and Fig. 23 takes over the synchronous coupling of the two pivot lever joints 14l and 15l from the embodiment according to the Fig. 20 and Fig. 21. The dimensionally stable crank rod K 10 However, it is not driven by a crank mechanism, but by a cable pulley system S9, which receives and transmits the corresponding drive forces from the electric drive motor M. The cable pulley system S9 has three deflection pulleys arranged in a triangular pattern, one of which is driven by the electric drive motor M.

[0047] The shading device according to the Fig. 24 and Fig. 25 relies on a circulating cable pull S 10 , to drive the left pivot lever joint 14m. The cable pull system S 10 is driven directly by the electric drive motor M. The synchronizing device for synchronous drive transmission to the opposite pivot lever joint 15m is achieved by a crossed, circulating cable pull S. 11 The corresponding deflection pulleys are coaxial to the pivot joints D. 10 provided and rotationally fixed to the respective lower lever arms of the pivot lever joints 14m, 15m.

[0048] In the embodiment according to the Fig. 26 and Fig. In figure 27, the electric drive motor M is positioned approximately midway between the two pivot lever joints 14n and 15n. The drive transmission to the left pivot lever joint 14n and the right pivot lever joint 15n is effected by two circulating cable systems S. 11 , S 12, which in the area of ​​the electric drive motor M have two coaxial and rotationally fixed pulleys. Further deflection pulleys are located in the area of ​​the swivel joints D. 11 provided. The left cable pulley system S 11 features a crossed, circumferential cable pull to achieve a reversal of the direction of the drive transmission.

[0049] In the embodiment according to the Fig. 28 to 29 is driven by a circulating cable pull S 13 the lower lever arm of the left pivot lever joint 14p in the area of ​​the swivel joint D 12 directly. A coupling mechanism K 12 For synchronized drive transmission to the right pivot joint 15p, a cable system with various deflection pulleys is used, the cable system being formed by two open cables. The lower lever arm of each pivot joint 14p, 15p has, in the area of ​​the lower pivot D 12Each has a double rocker arm arranged in a rotationally fixed manner with the respective lower lever arm, which extends to opposite sides from the axis of rotation of the respective pivot joint D. 12 protrudes. The respective cable pull engages at one end face of the double rocker arm of each pivot lever joint 14p, 15p, resulting in the desired synchronous and opposing drive transmission to both pivot lever joints 14p, 15p.

[0050] The embodiment according to the Fig. 30 and Fig. 31 essentially corresponds to the embodiment according to the Fig. 10 and Fig. 11, so that, in addition, the explanations regarding the Fig. 10 and Fig. Reference is made to paragraph 11. The only difference in the embodiment according to the Fig. 30 and Fig. It is 31 that the cable pull system S 14for the synchronized coupling of the lever extensions of the two pivot lever joints 14q, 15q, a rope section is provided which is guided over two offset deflection pulleys and thus results in two parallel rope guide sections between the respective deflection pulley and the corresponding point of application on the lever extension of the respective pivot lever joint 14q, 15q.

[0051] The embodiment according to the Fig. 32 and Fig. 33 relies on two cable pull systems analogous to the embodiment according to the for the transmission of the drive forces of the electric drive motor M. Fig. 26 and Fig. 27. The only difference in the embodiment according to the Fig. 32 and Fig. 33 is that the rope ends of the respective rope pull system S 16 ,S 15 not continuously around deflection pulleys in the area of ​​the respective pivot joint D 14are not guided around, but rather each engages a rocker arm E which is rotationally fixed to a support extension of the lower lever arm of the respective pivot lever joint 14r, 15r. The rocker arm E has a circular arc-shaped guide contour. The two cable ends of the respective cable pull system S 15 , S 16 are attached to opposite end sides of the respective rocker E and are guided around the arc-shaped contour of the rocker E in opposite directions depending on the pivot orientation of the respective pivot lever joint 14r, 15r.

Claims

[1] A shading device for a motor vehicle comprising a flexible shading structure (11, 11a, 11b) that can be moved between a compactly stored rest position and a flat, extended protective position, comprising a dimensionally stable extension profile (9 to 9r) arranged on a front end region of the shading structure (11, 11a, 11b) in the extension direction, and comprising a movably mounted support arm assembly connected to the extension profile (9 to 9r) and providing positive guidance for the extension profile (9 to 9r) when the shading structure (11 to 11b) is moved between the rest position and the protective position, wherein the support arm assembly is positively coupled to the extension profile (9 to 9r) in such a way that the extension profile (9 to 9r) can be moved into non-parallel end positions corresponding to the rest position and the protective position of the shading structure (11 to 11b) correspond,wherein the support arm arrangement is designed as a pivot lever arrangement with at least two pivot lever joints (14 to 14r, 15 to 15r) which each engage at one end at bearing points on the extension profile (9 to 9r) spaced apart from each other in the longitudinal direction of the extension profile (9 to 9r), wherein the pivot lever joints (14 to 14r, 15 to 15r) have different lengths, characterized by , that the pivot lever joints (14 to 14r, 15 to 15r) are connected at the other end to vehicle-mounted, stationary rotary joints (16, 17; D1 to D 14 are stored. [2] Shading device according to claim 1, characterized by , that the bearing points are pivot joints (D1 to D 14 ) each with one degree of freedom, which define a rotational movement of the pivot lever joints (14 to 14r, 15 to 15r) in a common pivot plane. [3] Shading device according to claim 2, characterized by, that at least one pivot lever joint (14 to 14r, 15 to 15r) has a hinge joint (22, 23) movable in the common pivot plane and is connected at its end to a pivot bearing (16, 17; D1 to D) that is fixed to the vehicle in the mounted operating state 14 ) is held in a rotatable position. [4] Shading device according to one of the preceding claims, characterized by , that the extension profile has a mounting section which is provided for sliding mounting on a vehicle-fixed disc, wherein the pivot lever arrangement is designed to be spring-elastic orthogonal to the common pivot plane such that the extension profile slides along the side disc (2) supported at least section by section when shifted between the end positions. [5] Shading device according to one of the preceding claims, characterized bythat a drive system is directly or indirectly coupled to the pivot lever arrangement and in particular has at least one drive transmission train that transmits tensile and / or compressive forces. [6] Shading device according to claim 5, characterized by that the drive transmission system is designed as a circulating cable pull system. [7] Shading device according to one of the preceding claims, characterized by , that a mechanical synchronizing device is provided which positively couples the at least two pivot lever joints (14 to 14r, 15 to 15r) for common synchronous or opposite pivoting movements. [8] Shading device according to any one of claims 5 to 7, characterized by, that the drive system has at least one linear guide (29, 30; 29a; 29b) along which a guide joint (25, 26; 25a, 26a; 25b, 26b) of the pivot lever joint (14 to 14b, 15 to 15b) can be linearly displaced in order to move the at least one pivot lever joint (14 to 14b, 15 to 15b) between a folded rest position and an unfolded functional position, which correspond to the end positions of the extension profile (9 to 9b). [9] Shading device according to any one of claims 5 to 8, characterized by , that the drive system has a crank mechanism which is directly or indirectly mechanically coupled to the at least one pivot lever joint (14f, 15f; 14g, 15g; 14h, 15h; 14i, 15i; 14k, 15k).

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