Extendable sun visor for a motor vehicle and motor vehicle

Abstract

Sun visor (10) for a motor vehicle (12), with an anti-glare element (26) which is movable from a first state, in which a first surface area of ​​a window (16) of the motor vehicle (12) can be covered by means of the anti-glare element (26), into a second state, wherein a second surface area of ​​the window (16) can be covered by means of the anti-glare element (26) moved into the second state, wherein the second surface area is greater than the first surface area, wherein the sun visor (10) comprises a bearing device (22) through which a pivot axis (24) is provided, wherein the anti-glare element (26) is pivotable about the pivot axis (24) from an initial position, in which the anti-glare element (26) is pivoted towards a roof (20) of the motor vehicle (12) in an installed state of the sun visor (10) in the motor vehicle (12), into a functional position, and wherein the anti-glare element (26) is movable from the first state into the second state both in the initial position and in the functional position, characterized in that the anti-glare element (26) has a first free end (42) and a second free end (44), wherein by moving the anti-glare element (26) from the first state to the second state, the first free end (42) can be moved towards the pivot axis (24) and the second free end (44) can be moved away from the pivot axis (24), wherein the sun visor (10) has a spring element (50) by means of which the free ends (42, 44) of the anti-glare element (26) are coupled to one another, and wherein the spring element (50) can be tensioned by moving the anti-glare element (26) from the first state to the second state.

Description

The invention relates to a sun visor for a motor vehicle, having an antiglare element which is movable from a first state to a second state. In the first state, a first surface area of a window of the motor vehicle can be covered by means of the antiglare element. By means of the antiglare element moved into the second state, a second surface area of the pane can be covered. The second surface area is larger than the first surface area. The invention further relates to a motor vehicle having at least one such sun visor.EP 2 199 126 A1 describes a sun visor of a motor vehicle having a carrier part and an extension part which is movable relative to the carrier part between a retracted position and an extended position. In the retracted position of the pull-out part, a first covering material web and a second covering material web are wound onto a reel of the sun visor.EP 1 769 954 B1 describes a sun visor for a motor vehicle windshield, which has a roller blind with a covering fabric web which is mounted on a winding shaft and can be unwound from the winding shaft by pulling on a pull rod.DE 33 41 509 A1 describes a sun visor for vehicles, in which a sun visor body comprises an upper part which carries a bearing axis and a lower part which is arranged on said upper part such that it can be displaced perpendicular to the bearing axis via guide elements. The guide elements consist of pins and pin receptacles, wherein the pins are arranged telescopically in the pin receptacles.In motor vehicle construction, a trend is to be observed in which the motor vehicles have large glass roofs. For example, the front window of the motor vehicle can extend comparatively far into the region of a roof of the motor vehicle. Alternatively, it is possible to provide a transparent pane in addition to the front pane in the region of the roof of the motor vehicle. Large transparent windows of the motor vehicle allow much light to pass through and give the occupant of the motor vehicle a comfortable feeling in space. In addition, such large glass surfaces have a more moderate effect. However, it should be noted that, when the motor vehicle is equipped with large light-transmissive panes, for example, the sun can more easily blind occupants of a passenger compartment of the motor vehicle. In addition, the temperature in the passenger compartment or interior of the motor vehicle can increase comparatively sharply in the event of solar radiation.In order to counter the problem of glare from the sun, different solutions are conceivable. For example, a pane in a roof region of the motor vehicle can be modified in light transmittance by applying an electrical voltage to a coating of the pane or to a film which is attached to the pane. However, this is associated with a comparatively high outlay. In addition, the times for a switch from a transparent state to an opaque or shaded state are comparatively long.This is disadvantageous in particular when the pane provided with the switchable film, for example, is to be used as a front pane or windshield of the motor vehicle. This is because, for example, glare protection cannot be provided sufficiently quickly for a driver of the motor vehicle by applying the electrical voltage to the switchable film. Currently available switchable films also do not achieve sufficient transparency to meet legal or similar normative requirements for approval for use in a windshield.In addition, in particular in the case of a low sun position, it can occur that the sun shines through between an edge of a folded-down sun visor and an instrument panel of the motor vehicle and can thus blind the driver. This is disadvantageous. In addition, the above-mentioned solutions are comparatively inflexible.DE 100 31 201 A1 describes a continuously extendable sun visor.Furthermore, US 2017 / 0232825 A1 describes a sun protection element which can have an additional roller blind for enlarging a surface of a region of a pane to be concealed. Alternatively, the sun protection element can have telescopically extendable plates.DE 199 17 292 A1 describes a motor vehicle having a first antiglare device which is designed as a roller blind and having a second antiglare device whose dimension cannot be changed. The second antiglare device can be pivoted down from a depression formed in the region of a front cross member of the motor vehicle into a visible region of a driver of the motor vehicle.It is the object of the present invention to provide a sun visor of the type mentioned at the beginning, which is particularly flexible with regard to providing an antiglare means, and to specify a motor vehicle having at least one such sun visor.This object is achieved by a sun visor having the features of claim 1 and by a motor vehicle having the features of claim 6. Advantageous embodiments with expedient developments of the invention are specified in the dependent patent claims and in the following description.The sun visor for a motor vehicle according to the invention comprises an antiglare element which can be moved from a first state, in which a first surface area of a pane of the motor vehicle can be covered by means of the antiglare element, into a second state. By means of the antiglare element moved into the second state, a second surface area of the pane can be covered, wherein the second surface area is larger than the first surface area. The sun visor comprises a bearing device by means of which a pivot axis is provided. The antiglare element is pivotable about the pivot axis from an initial position into a functional position. In the starting position, the antiglare element is pivoted toward a roof of the motor vehicle in an installed state of the sun visor in the motor vehicle. The antiglare element is movable from the first state into the second state both in the initial position and in the functional position.Thus, when the sun visor is installed in the motor vehicle and is thus in the installed state, in the starting position a greater surface area in the region of the roof of the motor vehicle can be covered by means of the antiglare element by moving the antiglare element from the first state into the second state. This is advantageous, for example, if a light-transmissive pane is arranged in the roof of the motor vehicle or if a pane of the motor vehicle designed as a front pane extends into the region of the roof of the motor vehicle.However, even when the antiglare element is pivoted into the functional position, i.e. when the antiglare element is pivoted away from the roof in the installed state of the sun visor in the motor vehicle, the surface area that can be covered by means of the antiglare element can be enlarged by moving the antiglare element from the first state into the second state. Consequently, the sun visor is particularly flexible with respect to providing antiglareness.In the sun visor according to the invention, the antiglare member has a first free end and a second free end. In this case, by moving the antiglare element from the first state into the second state, the first free end can be moved towards the pivot axis, wherein at the same time the second free end can be moved away from the pivot axis. Such an antiglare element can be handled particularly easily if the antiglare element is to be moved from the first state into the second state. This applies both when the antiglare element is moved manually, i.e. by an occupant of the motor vehicle from the first state to the second state and back, and when an actuator of the sun visor is provided for this movement, for example in the form of an electric motor of the sun visor or the like.The sun visor has a spring element, by means of which the free ends of the antiglare element are coupled to one another. In this case, the spring element can be tensioned by moving the antiglare element from the first state into the second state. As a result, the spring element firstly ensures a taut configuration of the antiglare element when the antiglare element is in the second state. In addition, the spring element facilitates a return movement of the antiglare element from the first state into the second state by relaxing the spring element. Furthermore, such a configuration can be implemented very easily from a manufacturing standpoint.The fact that a first surface area of the window pane can be covered by means of the antiglare element is to be understood in the present case as meaning that the antiglare element is designed, when the sun visor is installed in the motor vehicle (i.e. in the installed state of the sun visor), to cover the first surface area of the window pane of the motor vehicle. Furthermore, the antiglare member is configured to cover the second, larger surface area of the pane by moving the antiglare member from the first state to the second state when the sun visor is installed in the motor vehicle and thus the sun visor is in the installed state.By bringing the antiglare element into the first state, a very compact sun visor is provided, in which the antiglare element is retracted. This makes it possible, when the sun visor is installed in the motor vehicle, to allow a large amount of light to penetrate into the passenger compartment of the motor vehicle. The latter is advantageous in particular with regard to a generous feeling in space for occupants located in the passenger compartment.Further, the antiglare member can be swung as desired, and also the size of an antiglare-providing surface of the antiglare member can be changed as desired. For changing the size of the surface of the antiglare member providing the antiglare property, only the antiglare member needs to be moved from the first state to the second state or moved back.It is particularly advantageous if the antiglare element can assume a plurality of intermediate states or intermediate positions between the first state and the second state, i.e. the antiglare element is continuously movable or continuously movable into respective intermediate states or intermediate positions. This applies in particular when a minimum surface area can be covered or concealed by means of the antiglare element in the first state and a maximum surface area can be covered or concealed in the second state.If the sun visor is arranged in the region of a front window of the motor vehicle in the installed state, that is to say when the sun visor is installed in the motor vehicle, a larger partial region of the roof can be covered or covered by means of the sun visor element by moving the sun visor element into the second state when the sun visor element is in the starting position than when the sun visor element is moved into the first state. This is advantageous in particular if a further transparent pane is arranged in the region of the roof of the motor vehicle or if the pane of the motor vehicle, which is designed as a front pane, extends a certain distance into the region of the roof of the motor vehicle. This is because solar radiation impinging in particular on the roof of the motor vehicle can be particularly well prevented from reaching occupants of the motor vehicle. This makes it possible to provide the occupants of the motor vehicle with a very comfortable and pleasant glare protection.In addition, the antiglare member located at the initial position may remain in the first state or be moved to the second state as needed. In this case, it is possible to take into account how large the surface area of a pane of the motor vehicle which is located in the region of the roof and is intended to be covered by means of the antiglare element.The extendability of the antiglare element both in the initial position and in the functional position is therefore particularly advantageous with regard to the flexible provision of the antiglare device. In the functional position, the antiglare element is preferably pivoted away from the roof when the sun visor is installed in the motor vehicle.Preferably, at least a partial region of the antiglare element is deflectable about the pivot axis for movement from the first state to the second state. A corresponding flexibility or flexibility of at least the partial region of the antiglare element is advantageous. This is because, when the antiglare element is moved into the first state, the sun visor is thus particularly compact.In a sun visor not according to the invention, it can be provided that the antiglare element can be unwound from the storage device by moving from the first state to the second state. In this way, the enlargement of a surface that can be covered by means of the antiglare element can be realized particularly easily. In addition, the sun visor is thus particularly compact when the antiglare element is brought into the first state.Instead of an antiglare element that can be deflected and / or rolled up about the pivot axis, it can be provided in an embodiment of the antiglare element not according to the invention that the antiglare element comprises respective plate-like partial regions which are displaceable relative to each other in order to move the antiglare element from the first state into the second state and back. In this way, a particularly robust sun visor with at the same time an easily manageable glare protection element can be provided.Preferably, the bearing device has a smaller diameter in respective end regions than in a central region of the bearing device. In this case, the diameter of the bearing device is designed to decrease continuously from the central region toward the end regions. By virtue of such a barrel-shaped or spindle-shaped configuration of the bearing device, it is particularly well possible for the antiglare element to be at least partially adapted to the curvature of the pane both in the first state and in the second state when the sun visor is installed in the motor vehicle.Thus, in particular, account can be taken of the fact that the front windshield of the motor vehicle, which can preferably be covered by means of the antiglare element, usually has a convex curvature along the vehicle longitudinal axis and along the vehicle transverse axis. In particular such curvatures, the flexible or flexible antiglare element can follow particularly easily if the bearing device has the diameter which decreases continuously from the central region toward the two end regions. It is therefore advantageous if the antiglare element is slightly flexible in order to be able to follow a curvature of the front pane well.Preferably, the antiglare element moved into the second state is formed curved both in a first direction running along the pivot axis and in a second direction running perpendicular to the pivot axis. In particular, if the antiglare element comprises a textile or similar flexible planar structure or is formed from such a material, the curvature of the antiglare element in the first direction and in the second direction can be ensured particularly easily.However, even in the case of a plate-like configuration of parts of the antiglare element, these curvatures can be realized. For this purpose, it can be provided that the plate parts or plate elements of the antiglare element have a certain flexibility or flexibility. Furthermore, it is possible for the panel parts to be of a self-rigid and curved design, wherein the panel parts are moved along one another relative to one another during the retraction and the extension of the antiglare element. This also ensures that the rigid or rigid plate parts can easily follow a curvature of the pane in the first direction and in the second direction.The sun visor preferably has a telescopic device, wherein the antiglare element can be moved from the first state into the second state by extending the telescopic device. By providing the telescopic device, the surface that can be covered by means of the antiglare element can be enlarged particularly easily by moving the antiglare element from the first state into the second state.The motor vehicle according to the invention has at least one sun visor according to the invention. As a result, a very flexible glare protection can be provided in the motor vehicle by means of the at least one sun visor.Preferably, the pivot axis provided by the bearing device is stationary in the motor vehicle. This eliminates the need for a complex mechanism for displacing the pivot axis. This is advantageous in particular with regard to a reduction in the complexity of the design of the sun visor. In addition, the sun visor is thereby particularly error-prone.The bearing device can be arranged in the region of a roof of the motor vehicle. This is advantageous, for example, if a front pane of the motor vehicle and a further pane located in the region of the roof of the motor vehicle are formed separately from one another. This is because the sun visor can then be mounted particularly easily in the region of a front cross member or similar body component which can be arranged between the front window and the window arranged in the roof of the motor vehicle.It has been found to be further advantageous if the bearing device is arranged between an edge of the window that is to the rear in the direction of a vehicle longitudinal axis and an edge of the window that is to the front in the direction of the vehicle longitudinal axis. The rear edge of the pane is arranged in the region of a roof of the motor vehicle. Such an attachment of the sun visor to the window of the motor vehicle is advantageous in particular when the window of the motor vehicle is designed as a front window which extends as far as into the region of the roof of the motor vehicle. This is because, depending on the position of the sun, the solar radiation impinging on the motor vehicle in the respective region of the front windshield can be shielded very well by means of the antiglare element.Attachment of the sun visor to an inner side of the front window of the motor vehicle can be realized in particular by adhering at least one component of the bearing device to the inner side of the front window of the motor vehicle.The advantages and preferred embodiments described for the sun visor according to the invention also apply to the motor vehicle according to the invention and vice versa.Accordingly, the invention also includes developments of the motor vehicle according to the invention, which have features as have already been described in connection with the developments of the sun visor according to the invention. For this reason, the corresponding developments of the motor vehicle according to the invention are not described again here.The motor vehicle according to the invention is preferably designed as a motor vehicle, in particular as a passenger car or truck, or as a passenger bus.The invention also includes the combinations of the features of the described embodiments. The invention therefore also comprises implementations which each have a combination of the features of a plurality of the described embodiments, provided that the embodiments have not been described as mutually exclusive.Exemplary embodiments of the invention are described below. The following shows: FIG. 1 shows a detail of a motor vehicle in a view from a passenger compartment of the motor vehicle onto a front window of the motor vehicle, on which two sun visors are arranged that can be continuously extended and can also be pivoted about a pivot axis; FIG. 2 schematically shows a view of the motor vehicle from the outside, wherein one of the two sun visors is pivoted out of the downwardly folded functional position shown in FIG. 1 into an upwardly folded starting position; FIG. 3 shows a sectional view of a possible mechanism for enlarging a surface of a window of the motor vehicle that can be covered by means of an antiglare element of the sun visor, wherein the antiglare element is in a first state; FIG. 4 shows the sun visor according to FIG. 3 in a further sectional view, wherein the antiglare element is moved into a second state, in which a greater surface area of the window of the motor vehicle can be covered than in the first state of the antiglare element shown in FIG. 3 ; FIG. 5 schematically shows the continuous enlarging of a surface area that can be covered by means of the antiglare element by extending the antiglare element; FIG. 6 schematically shows a preferred shape of the sun visor in the extended state, wherein the antiglare element of the sun visor is curved along two directions perpendicular to one another and is thus well adapted to the curved course of the front pane or windshield of the motor vehicle; and FIG. 7 shows a variant of the sun visor in which the antiglare element can be wound onto a barrel-shaped or spindle-shaped bearing device.The exemplary embodiments explained below are preferred embodiments of the invention. In the exemplary embodiments, the described components of the embodiments each represent individual features of the invention that are to be considered independently of one another and that also develop the invention independently of one another. Therefore, the disclosure is intended to include combinations of the features of the embodiments other than those illustrated. Furthermore, the described embodiments can also be supplemented by further features of the invention that have already been described.In the figures, identical reference numerals designate functionally identical elements.In FIG. 1, two sun visors 10 are shown schematically, which are installed in a motor vehicle 12. In FIG. 1, a section of a passenger compartment 14 of the motor vehicle 12 is shown, wherein the passenger compartment 14 is bounded towards a vehicle front (not shown) of the motor vehicle 12 by a front windshield 16 of the motor vehicle 12. In the form of the motor vehicle 12 shown by way of example and in a section, the front pane 16 extends comparatively far from an instrument panel 18 of the motor vehicle 12 into the region of a roof 20 of the motor vehicle 12 (compare FIG. 2 ).The respective sun visor 10 comprises a respective bearing device 22, wherein a pivot axis 24 is provided by the bearing device 22 (compare FIGS. 3 to 5 ). An antiglare member 26 of the sun visor 10 can be moved from a first state (see FIG. 3 ) to a second state (see FIG. 4 ). In the second state, the antiglare element 26 is extended further (compare FIG. 4 or 5 ) or unrolled further from the storage device 22 in the manner of a roller blind (compare FIG. 7 ) than in the first state.The two states of the antiglare member 26 are schematically shown in FIG. 1 for the driver-side sun visor 10 and for the passenger-side sun visor 10. Here, the antiglare member 26 of the driver's side sun visor 10 is in the second state. In contrast, the antiglare member 26 of the passenger-side sun visor 10 is in the first state. Accordingly, a first surface area of a windshield of the motor vehicle 12, in the present case the front windshield 16 of the motor vehicle 12, is covered by means of the antiglare element 26 of the sun visor 10 on the passenger side.By means of the antiglare element 26 of the driver's side sun visor 10 moved into the second state, in contrast, a second surface area of the front window 16 is covered, wherein the second surface area is larger than the first surface area. This is because the antiglare member 26 of the respective sun visor 10 is extendable (see, for example, FIGS. 3 and 4 ) or is rollable off the bearing device 22 (see FIG. 7 ).FIG. 2 shows the front-passenger-side sun visor 10 in an initial position in which the antiglare element 26 is pivoted about the pivot axis 24 toward the roof 20 of the motor vehicle 12. In contrast, the front-passenger-side sun visor 10 is shown in FIG. 1 in a functional position in which the antiglare element 26 is pivoted about the pivot axis 24 away from the roof 20 and thus toward a front-side edge 28 of the front windshield 16. The driver's sun visor 10 is shown both in FIG. 1 and in FIG. 2 in its functional position, in which the antiglare element 26 is pivoted away from the roof 20 and toward the front edge 28 of the front pane 16.In the present case, the antiglare element 26 of the sun visor 10 can be moved into the extended or unrolled second state when the antiglare element 26 is in the initial position. The starting position of the antiglare element 26 is marked in FIG. 1 only for the sun visor 10 on the passenger side. Specifically, in FIG. 1, the starting position of the antiglare member 26 of the passenger-side sun visor 10 is illustrated by a broken line 66.The antiglare element 26 of the respective sun visor 10 can be moved in the present case both in the initial position and then into the extended or unrolled second state when the antiglare element 26 is in the functional position. FIG. 1 shows the functional position of the respective antiglare element 26 of both the passenger-side sun visor 10 and the driver-side sun visor 10.In FIG. 2, on the other hand, only the antiglare element 26 of the driver's side sun visor 10 is in the functional position. The functional position of the antiglare element 26 of the passenger-side sun visor 10 is illustrated in FIG. 2 merely by a further dashed line 68.The antiglare element 26 of the respective sun visor 10 is thus both pivotable about the pivot axis 24 and movable from the first state into the second state. And this extension of the antiglare element 26 or this rolling of the antiglare element 26 from the bearing device 22 is possible both when the antiglare element 26 is pivoted toward the roof 20 of the motor vehicle 12 and when the antiglare element 26 is pivoted toward the front edge 28 of the front window 16. In the present case, the sun visor 10 is very flexible with regard to providing glare protection.The antiglare element 26 can preferably be moved in any pivot position about the pivot axis 24 from the first state, in which the first surface area of the pane can be covered or covered by means of the antiglare element 26, into the second state, in which the second, larger surface area of the pane can be covered or covered by means of the antiglare element 26.The possibility of being able to move the antiglare element 26 into the second state even when the antiglare element 26 is in the initial position is advantageous in particular when the front pane 16 (as shown in the present case) extends comparatively far into the region of the roof 20 of the motor vehicle 12. This is because, by moving the antiglare element 26 from the first state into the second state, a gap 30 can be covered by the antiglare element 26, for example, which gap can be formed between a rear edge 32 of the front pane 16 and the antiglare element 26 moved into the first state. This makes it possible to prevent a vehicle occupant from being blinded through this gap 30.Due to the fact that the front pane 16 occupies a part of the roof 20 of the motor vehicle 12, according to FIGS. 1 and 2 the rear edge 32 of the front pane 16 comes to lie in the region of the roof 20 of the motor vehicle 12.Additionally or alternatively, the motor vehicle 12 can have at least one further light-transmissive pane (not shown in the present case) in the region of the roof 20. In this case, too, it is expedient if at least a part of the further pane (not shown) arranged in the roof 20 can be covered or covered by means of the antiglare element 26 pivoted into the starting position by moving the antiglare element 26 into the second state, i.e. by extending or rolling the antiglare element 26.The sun visor 10 which can be pivoted as well as extended or rolled off can thus be used advantageously in the motor vehicle 12 in particular if the motor vehicle 12 has a panoramic glazing unit in which at least a partial region of the roof 20 of the motor vehicle 12 is configured to be transparent to light.In the present case, the pivot axis 24 of the respective sun visor 10 provided by the bearing device 22 is stationary in the motor vehicle 12. As a result, the provision and the construction of the bearing device 22 are particularly simple and low-complexity.For example, the bearing device 22 may be provided by an L-shaped bent rod or the like as shown in FIG. 5. Additionally or alternatively, it is possible for the bearing device 22 to be designed as a body which is rotatable (or else arranged in a rotationally fixed manner) about the pivot axis 24 and about which the antiglare element 26 can be deflected (compare FIGS. 3 and 4 ). Furthermore, it is possible that the antiglare element 26 can be rolled or wound onto the storage device 22 (see FIG. 7 ), which can be configured for this purpose in particular as a body rotatable about the pivot axis 24.According to FIGS. 1 and 2, the storage device 22 can be fastened to an inner side 34 of the front pane 16, for example by adhering at least one component of the storage device 22 to the inner side 34 or the like.FIGS. 1 and 2 show that the bearing device 22 can be arranged between the edge 32 of the front windshield 16 that is to the rear in the direction of the vehicle longitudinal axis x and the edge 28 of the front windshield 16 that is to the front in the direction of the vehicle longitudinal axis x. The vehicle longitudinal axis x, the vehicle vertical axis z and the vehicle transverse axis y of the motor vehicle 12 are illustrated in FIG. 2 by a coordinate system.The rear edge 32 of the front window 16 can come to lie in the region of the roof 20 of the motor vehicle 12. This is the case when the front windshield 16 (as shown in FIG. 1 and in FIG. 2 ) extends a certain distance into the region of the roof 20 of the motor vehicle 12.The antiglare element 26 can be provided, for example, by a flexible sheet and can be formed in the manner of a textile or the like. This is particularly advantageous if the antiglare element 26 is designed to be rollable or rollable (compare FIG. 7 ), but also if the antiglare element 26 is deflected about the pivot axis 24 during the transfer from the first state (compare FIG. 3 ) to the second state (compare FIG. 4 ).In order to move the antiglare element 26 from the first state (compare FIG. 3 ) into the second state (compare FIG. 4 ), the sun visor 10 may have a telescopic device 36, which is schematically and exemplarily illustrated in FIG. 2. For example, the telescopic device 36 can have a plurality of guide elements 38 which can be displaced relative to one another and which can be designed as plate elements and / or frame parts or the like which engage one another according to FIG. 2. However, the specific illustration of the telescopic device 36 in FIG. 2 is merely exemplary, and a plurality of other or further guide elements 38 is possible in order to provide the telescopic device 36.In FIG. 2, it is shown for the front-passenger-side sun visor 10 that the visor element 26 is in the starting position and thus in a stowage position. Already in this initial position, the antiglare element 26 makes it possible to cover a partial region of the roof 20, for example at least a part of that partial region of the roof 20 which is formed so as to be transparent and is located between the pivot axis 24 and the rear edge 32 of the front pane 16. This partial region of the roof 20 or glass roof is provided in the present case by a section of the front pane 16 close to the rear edge 32 of the front pane 16.By extending the antiglare element 26 located in the initial position, even a greater portion of the front pane 16 can be concealed or covered in the region of the roof 20. However, even if the antiglare member 26 is pivoted from the storage position or initial position to the functional position, the antiglare member 26 can be extended.Preferably, a continuously variable movement of the antiglare element 26 into the fully extended (compare FIG. 4 ) or unrolled (compare FIG. 7 ) state is possible. Accordingly, the antiglare member 26 can preferably assume any intermediate positions between the fully retracted state (see FIG. 3 ) and the fully extended state (see FIG. 4 ) or the fully unrolled state (see FIG. 7 ). It is preferably provided that the antiglare element 26 can be locked in any of these intermediate positions.The extension of the antiglare element 26 even when the antiglare element 26 is pivoted into the functional position is advantageous in particular in a situation in which a very low sun position is present, i.e. when the sun is incident on an outer side 40 of the front pane 16 in a low position. However, in the present case, even when the visor element 26 of the respective sun visor 10 is in the stowage position or starting position, the visor element 26 can be extended telescopically, for example.FIGS. 3 and 4 show the telescopic mechanism or the telescopic device 36 of the sun visor 10 only in a highly schematic manner. Referring to FIGS. 3 and 4, the visor member 26 may have a first free end 42 and a second free end 44. The second free end 44 can be formed in the region of a front strip 46 of the sun visor 10. A vehicle occupant of the motor vehicle 12 can grip the antiglare element 26 well on this front strip 46 if he wishes to move the antiglare element 26 manually from the first state into the second state. For example, the occupant of the motor vehicle 12 can engage in a recessed grip 48 of the respective sun visor 10 for this purpose, wherein the recessed grip 48 of the respective sun visor 10 adjoining the front strip 46 is shown schematically in FIG. 1.According to FIG. 4, by moving the antiglare member 26 from the first state to the second state, the first free end 42 is moved toward the pivot axis 24. In contrast, by moving the antiglare element 26 from the first state to the second state, the second free end 44 is moved away from the pivot axis 24. The free ends 42, 44 can be coupled to one another by means of a tension spring 50 or similar spring element.In FIG. 3, the tension spring 50 is shown in a relaxed state. In contrast, the tensioned tension spring 50 is shown in FIG. 4. The tensioning of the tension spring 50 facilitates both the moving back of the antiglare element 26 into the first state and the deflecting of the partial region of the antiglare element 26, which is designed as a flexible sheet material according to FIGS. 3 and 4, around the bearing device 22.For example, the flexible partial region of the antiglare element 26 can be designed in the manner of a cover skin, which is deflected around the bearing device 22 designed in the manner of a deflecting roller when the antiglare element 26 is moved from the second state (compare FIG. 4 ) into the first state (compare FIG. 3 ).According to FIG. 5, the antiglare member 26 may be provided by plate members 52, 54 which are displaceable relative to each other. For example, the first plate element 52 can be extended out of the second plate element 54 formed in the manner of a receptacle in order to bring the antiglare element 26 from the first state into the second state. In this case, too, it is advantageous if the sun visor 10 has the grip strip or front strip 46. This is because the vehicle occupant can then very easily operate the sun visor 10 manually by gripping on the front strip 46.Even if the antiglare member 26 is provided by at least two plate members 52, 54 as schematically shown in FIG. 5, it is preferable that the plate members 52, 54 of the antiglare member 26 have some flexibility or flexibility. This is because the antiglare element 26 can then adapt particularly well to the usually curved course of the front pane 16.Furthermore, it is possible to form the plate elements 52, 54 or plate parts in a rigid manner. When the antiglare element 26 having the plate elements 52, 54 is moved from the first state into the second state and back, the plate elements 52, 54 which are rigid or self-rigid and curved according to FIG. 6 can be displaced relative to each other along the same radius. In this way, too, it can be ensured that the plate elements 52, 54 can follow the curved course of the front pane 16 well.Preferably, the antiglare element 26 moved into the second state is curved both in a first direction 56 extending along the pivot axis 24 and in a second direction 58 extending perpendicular to the pivot axis 24 (see FIG. 6 ). The corresponding directions 56, 58 are illustrated in FIG. 6 by respective double arrows.In particular if the antiglare element 26 is provided by a flexible sheet material or comprises a flexible sheet material which can be wound or rolled up onto the storage device 22, the storage device 22 can be configured to be barrel-shaped or spindle-shaped (compare FIG. 7 ). Accordingly, the bearing device 22 has a smaller diameter in respective end regions 60, 62 than in a central region 64 of the bearing device 22.In the embodiment of the sun visor 10 schematically illustrated in FIG. 5 and in FIG. 6, it can also be provided that the antiglare element 26 (as shown in FIGS. 3 and 4 ) can be deflected about the storage device 22 when the antiglare element 26 is moved from the first state into the second state or from the second state into the first state.Overall, the examples show how a continuously extendable and additionally pivotable sun visor 10 can be provided.

Claims

Sun visor (10) for a motor vehicle (12), having an antiglare element (26) which can be moved from a first state, in which a first surface area of a pane (16) of the motor vehicle (12) can be covered by means of the antiglare element (26), into a second state, wherein a second surface area of the pane (16) can be covered by means of the antiglare element (26) moved into the second state, wherein the second surface area is greater than the first surface area, wherein the sun visor (10) comprises a bearing device (22), by means of which a pivot axis (24) is provided, wherein the antiglare element (26) can be pivoted about the pivot axis (24) from a starting position, in which the antiglare element (26) is pivoted towards a roof (20) of the motor vehicle (12) in an installed state of the sun visor (10) in the motor vehicle (12), into a functional position, and wherein the antiglare element (26) can be moved from the first state into the second state both in the starting position and in the functional position, characterized in that the antiglare element (26) has a first free end (42) and a second free end (44), wherein the first free end (42) can be moved towards the pivot axis (24) and the second free end (44) can be moved away from the pivot axis (24) by moving the antiglare element (26) from the first state into the second state, wherein the sunshade (10) has a spring element (50), by means of which the free ends (42, 44) of the antiglare element (26) are coupled to one another, and wherein the spring element (50) can be tensioned by moving the antiglare element (26) from the first state into the second state.Sun visor (10) according to Claim 1, characterized in that at least a partial region of the antiglare element (26) can be deflected about the pivot axis (24) for movement from the first state into the second state.Sun visor (10) according to one of the preceding claims, characterized in that the bearing device (22) has a smaller diameter in respective end regions (60, 62) than in a central region (64) of the bearing device (22), wherein the diameter of the bearing device (22) is designed to decrease continuously starting from the central region (64) towards the end regions (60, 62).Sun visor (10) according to one of the preceding claims, characterized in that the antiglare element (26) moved into the second state is designed to be curved both in a first direction (56) running along the pivot axis (24) and in a second direction (58) running perpendicular to the pivot axis (24).Sun visor (10) according to one of the preceding claims, characterized in that the sun visor (10) has a telescopic device (36), wherein the antiglare element (26) can be moved from the first state into the second state by extending the telescopic device (36).Motor vehicle (12) having at least one sun visor (10) according to one of the preceding claims, wherein the pivot axis (24) provided by the bearing device (22) is fixed in the motor vehicle (12).Motor vehicle (12) according to Claim 6, wherein the bearing device (22) is arranged between an edge (32) of the window (16) which is to the rear in the direction of a vehicle longitudinal axis (x) and an edge (28) of the window (16) which is to the front in the direction of the vehicle longitudinal axis (x), and wherein the rear edge (32) of the window (16) is arranged in the region of a roof (20) of the motor vehicle (12).

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