DE102019114990B3 - Tailgate for a passenger car and method for operating a tailgate - Google Patents

Abstract

The invention relates to a tailgate (3) for a passenger car (2), by means of which a rear opening of the passenger car (2) can be closed and which comprises an outer skin area (4) which, at a tear-off edge (5), consists of a flatter upper area (6) merges into a steeper lower region (7) with a wind deflector (8) which can be shifted from a first position (9) to a second position (10) by means of a displacement device, the wind deflector (8) being provided in the outer skin region (4) which is from the first position (9), in which it is at least essentially integrated into a surface of the steeper lower region (7), into the second position (10), in which it starts from the tear-off edge (5) Extension of the flat upper region (6) extends, is displaceable.

Description

The invention relates to a tailgate for a passenger car and a method for operating a tailgate for a passenger car according to the preambles of the independent claims.

From the DE 10 2010 004 561 A1 a passenger vehicle with an air guiding device is already known, which is mounted in the rear of the passenger vehicle and can be moved relative to the rear by means of an exhibitor. A bearing element connects the exhibitor to the air guiding device in the area of its underside. The air guiding device can be extended from a retracted position when an increased speed of the passenger vehicle is reached. For this purpose, the air guiding device can be pivotable.

In addition, from the EP 1 078 795 A2 a trunk lid for a motor vehicle is known, by means of which a trunk in the rear of the motor vehicle can be opened or closed. The trunk lid includes open doors, one of which is assigned to an upper luggage compartment and another to a lower luggage compartment. The doors can be opened and closed together and individually.

In addition, from the US 2010/0264689 A1 a passenger vehicle with a rear opening is known, which gives access to a rear cargo area of the passenger vehicle. Furthermore, the passenger vehicle comprises a first tailgate which is pivotally connected to the body at an upper edge of the rear opening, and a second tailgate which is pivotably held on the body at a lower edge of the rear opening. The first tailgate and the second tailgate jointly close the rear opening.

Another state of the art is DE 10 2014 110 394 A1 , the DE 10 2018 000 242 A1 and the DE 10 2014 211 292 A1 known.

The object of the present invention is to provide a tailgate for a passenger car and a method for operating a tailgate for a passenger car, which enable particularly advantageous aerodynamics of the passenger car.

This object is achieved according to the invention by a tailgate for a passenger car and by a method for operating a tailgate for a passenger car with the features of the independent claims. Advantageous embodiments of the invention are the subject of the dependent claims and the description.

A first aspect of the invention relates to a tailgate for a passenger car, by means of which a rear opening of the passenger car can be closed. A trunk opening as the rear opening of the passenger vehicle can thus be completely closed by means of the tailgate. The tailgate has an outer skin area which merges at a tear-off edge from a flat upper area into a steeper lower area. The tailgate comprises a wind deflector which can be shifted from a first position to a second position by means of a displacement device. The wind deflector is arranged on the outside when the tailgate is installed in the passenger vehicle. The wind deflector can be displaced between the first position and the second position in order to adjust the aerodynamics of the passenger car having the tailgate.

In order to be able to set aerodynamics of the tailgate or of the passenger vehicle comprising the tailgate in a particularly advantageous manner, the wind deflector is provided in the outer skin area according to the invention. In addition, according to the invention, the wind control element can be moved from the first position, in which the wind control element is at least substantially integrated into a surface of the steeper lower region, to the second position, in which the wind control element extends from the tear-off edge in an extension of the flatter upper region . In the first position, the wind guiding element thus covers the lower area outwards at least in some areas. In the second position, the wind deflector protrudes beyond the tear-off edge. The displacement device can comprise an electric drive device for adjusting the wind guiding element between the first position and the second position. In the second position, a tail of the passenger car having the tailgate is thus extended by means of the wind deflector, as a result of which the aerodynamics of the tailgate and in particular of the passenger car having the tailgate can be set particularly advantageously.

In an advantageous development of the invention, it is provided that in the second position the wind guiding element is arranged in one plane with the upper region. For this purpose, the wind guiding element is in particular at least essentially flat, a first end of the wind guiding element facing the upper region being flush with the upper region in the second position. Here, the wind control element is arranged, in particular, with its first end lying against the outer skin area, in particular lying against the tear-off edge. The wind deflector is thus in the second position completely over the tear-off edge. The arrangement of the wind control element in the second position in a plane with the upper region enables a smooth transition from the upper region to the wind control element. As a result, air flowing past the tailgate can be guided along the tailgate while setting a uniform laminar air flow.

In an alternative advantageous embodiment of the invention it is provided that in the second position the wind guiding element is arranged at an angle relative to a plane predetermined by the upper region. In this case, the wind guiding element can be pivoted upward or downward relative to the plane from its first end facing the outer skin region to its free second end relative to the plane. If the free end is pivoted upward relative to the plane defined by the upper region, an output of the passenger car having the tailgate can be adjusted by means of the wind deflector. When the wind deflector swivels with its free end relative to the plane predetermined by the upper region by the angle downwards, the aerodynamics of the passenger car having the tailgate can be adjusted particularly advantageously.

In a further embodiment of the invention, it has proven to be advantageous if the wind guiding element extends at least over 70 percent, in particular at least over 80 percent, in particular at least over 90 percent of an entire width of the tailgate, in particular completely over the entire width of the tailgate. Thus, the aerodynamics of the tailgate or the passenger car having the tailgate can be adjusted over the entire width of the tailgate by means of the wind deflector. This enables the aerodynamics of the tailgate or of the passenger car having the tailgate to be adjusted particularly efficiently and particularly precisely by adjusting the wind deflector between the positions.

In a further embodiment of the invention, it has proven to be advantageous if the wind guiding element is held on the outside of the outer skin area so that it can pivot about a pivot axis. The wind deflector can be held on the outer skin area of the tailgate, for example, by means of a hinge. The hinge specifies the pivot axis for the wind deflector. In particular, the hinge is arranged in the area of the tear-off edge, so that the wind guide element is held at the outer skin area with its first end in the area of the tear-off edge and can be pivoted about the pivot axis with its free end. The hinge enables a particularly simple displacement of the wind deflector between the first position and the second position.

In an alternative advantageous embodiment of the invention it is provided that the wind deflector is pivotally held on the outside of the outer skin area via a four-point joint. The four-point hinge enables a parallelogram-like mounting of the wind deflector on the outer skin area. A pivoting movement of the wind guiding element when it is shifted between the first position and the second position can be specified particularly precisely via the four-point joint.

In a further embodiment of the invention, it has proven to be advantageous if the wind guiding element has the first end held on the outer skin region and the free second end, and a length adjustment device is also provided, by means of which a length of the wind guiding element from the first end to the second end is provided is adjustable. The length of the wind deflector can thus be adjusted in its length, so that the aerodynamics of the tailgate can be adjusted in the respective position. The wind deflector can be stretched and compressed by means of the length adjustment device in order to adjust the aerodynamics of the tailgate and in particular of the passenger car having the tailgate. The length adjustment of the wind control element enables a particularly extensive adjustment of the aerodynamics of the wind control element.

In a further advantageous embodiment of the invention, it is provided that a light signal device is arranged in the lower region, which is covered by the wind guide element in the first position of the wind control element and by means of which a light signal can be output. In its first position, the wind control element covers the light signal device to the outside at least in regions in the longitudinal direction of the vehicle. Thus, the light signal device cannot be seen from the outside when the wind guiding element is arranged in the first position. In the second position of the wind control element, the wind control element is arranged, at least in regions, without overlap with the light signal device, so that the light signal device can be seen from outside the tailgate. The light signal can be output by means of the light signal device, for example in the form of a warning triangle. The light signal device can have a plurality of light-emitting diodes, by means of which the light signal can be output. By adjusting the wind deflector, the light signal device can thus be released or hidden in addition to adjusting the aerodynamics.

The invention further relates to a method for operating a tailgate for a vehicle Passenger car, by means of which a rear opening of the passenger car can be closed. The tailgate comprises an outer skin area which merges at a tear-off edge from a flatter upper area into a steeper lower area. In the method, a wind deflector of the tailgate is shifted from a first position to a second position by means of a displacement device. In order to be able to set aerodynamics of the tailgate and in particular of the passenger car having the tailgate by means of the wind deflector, the wind deflector is provided according to the invention in the outer skin area of the tailgate. In addition, it is provided according to the invention that the wind deflector is shifted from the first position into the second position by means of the displacement device, the wind deflector being at least substantially integrated in a surface of the steeper lower region in the first position and the wind deflector itself in the second position extends from the tear-off edge in an extension of the flat upper area. In the method, an aerodynamics of the tailgate to be adjusted can thus be determined and, depending on the aerodynamics to be adjusted, the wind deflector can be displaced between the first position and the second position by means of the displacement device. The wind deflector can be fixed in the first position or in the second position or in an intermediate position between the first position and the second position in order to adjust the aerodynamics of the tailgate. In the first position, the wind-guiding element can rest against the steeper lower region of the outer skin region at least substantially over its entire surface. The tailgate can be extended aerodynamically by moving the wind deflector into the second position. This enables a particularly efficient operation of the passenger car having the tailgate. Advantages and advantageous developments of the tailgate according to the invention are to be regarded as advantages and advantageous developments of the method according to the invention and vice versa. For this reason, the further advantages and advantageous developments of the method according to the invention are not described again here.

Further features of the invention result from the claims, the figures and the description of the figures. The features and combinations of features mentioned above in the description and the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the combination indicated in each case, but also in other combinations or on their own.

• 1 eine schematische Schnittansicht eines Heckbereichs eines Personenkraftwagens mit einer Heckklappe, welche ein an einer Abrisskante der Heckklappe befestigtes Windleitelement umfasst, welches von einer ersten, an einem Außenhautbereich der Heckklappe anliegenden ersten Stellung in eine zweite Stellung, in welcher sich das Windleitelement ausgehend von der Abrisskante in Verlängerung eines flachen oberen Bereichs des Außenhautbereichs erstreckt, verlagerbar ist, wobei das Windleitelement von einem an dem Außenhautbereich gehaltenen ersten Ende bis zu einem freien zweiten Ende eine erste Länge aufweist;
• 2 eine schematische Schnittansicht des Heckbereichs des Personenkraftwagens mit dem in der ersten Stellung angeordneten Windleitelement, welches mittels einer Längenverstelleinrichtung von der ersten Länge zu einer zweiten Länge, welche größer ist als die erste Länge, verlängerbar ist; und
• 3 eine schematische Schnittansicht des Heckbereichs des Personenkraftwagens mit dem die zweite Länge aufweisenden Windleitelement, welches mit seinem ersten Ende an dem Außenhautbereich im Bereich der Abrisskante gehalten ist und zwischen der ersten Stellung und der wenigstens einen zweiten Stellung verschwenkbar ist.

The invention will now be explained in more detail using a preferred exemplary embodiment and with reference to the drawings. Show it:

• 1 is a schematic sectional view of a rear area of a passenger car with a tailgate, which comprises a wind deflector fastened to a tear-off edge of the tailgate, which extends from a first position lying against an outer skin area of the tailgate into a second position, in which the wind deflector starts from the tear-off edge Extension of a flat upper region of the outer skin region extends, is displaceable, wherein the wind guide element has a first length from a first end held on the outer skin region to a free second end;
• 2nd a schematic sectional view of the rear area of the passenger car with the wind deflector arranged in the first position, which can be extended by means of a length adjustment device from the first length to a second length, which is greater than the first length; and
• 3rd is a schematic sectional view of the rear area of the passenger car with the wind guide element having the second length, which is held with its first end on the outer skin area in the area of the tear-off edge and is pivotable between the first position and the at least one second position.

In the 1 to 3rd is a rear area in respective schematic sectional views 1 of a passenger car 2nd shown. In the rear area 1 points out the passenger car 2nd a rear opening, which by means of a tailgate 3rd can be opened and closed. Via an outer contour of the tailgate 3rd is an aerodynamic of the passenger car 2nd adjustable.

The tailgate 3rd includes an outer skin area 4th , which is an outer skin of the passenger car 2nd provides. The outer skin area 4th goes on a tear-off edge 5 from a flatter top area 6 the outer skin area 4th in a steeper lower area 7 the outer skin area 4th about. The tear-off edge is present 5 of the passenger car 2nd thus provided by a notchback. On the outer skin area 4th , especially in the area of the tear-off edge 5 , is a wind deflector 8th held. The wind control element 8th here extends over a large part of a width of the tailgate 3rd along the vehicle transverse direction y. The wind control element 8th is like in 1 and 3rd can be recognized between a first position 9 and at least one second position 10th relocatable. In the first position 9 is the wind control element 8th outside on the outer skin area 4th , in the present case the steep lower area 7 , at. Here, in the first position 9 the wind control element 8th at least substantially in a surface of the steep lower region 7 be integrated. In the second position 10th is the wind control element 8th with its first end 11 on the outer skin area 4th especially at the tear-off edge 5 . Here is the wind control element 8th in the second position with its first end 11 opposite, second, free end 12th from the tear-off edge 5 from. In the second position 10th extends the wind control element 8th thus extending the upper flat area 6 the outer skin area 4th . The rear area is thus in the second position 1 of the passenger car 2nd aerodynamically extended.

As in the 1 and 3rd can be recognized in the second position 10th the wind control element 8th at an angle relative to one through the top flat area 6 given level. Here, the wind control element 8th to optimize the aerodynamics of the rear area 1 relative to through the flat top area 6 provided level pivoted down. Alternatively, the wind control element 8th through the top flat area 6 provided level can be pivoted upwards, thereby a particularly advantageous output of the passenger car 2nd can be achieved. The wind control element 8th can consequently from the at least substantially vertical first position 9 in the at least substantially horizontal second position 10th or in the second position pivoted beyond the horizontal 10th be pivoted.

The wind deflector is present 8th by means of a hinge 13 on the outer skin area 4th one by the hinge 13 predetermined pivot axis between the first position 9 and the at least one second position 10th held pivotable. With the hinge 13 it is a bow hinge in the present case. For swiveling the wind deflector 8th a displacement device, not shown in the figures, is provided, which is located in a cavity between an outer skin and a luggage compartment lining of the tailgate 3rd can be arranged. The displacement device can comprise an electrical drive unit, by means of which the wind guiding element 8th is electrically adjustable between the positions.

As an alternative to connecting the wind deflector 8th to the outer skin area 4th by means of the hinge 13 can the wind deflector 8th Swiveling on the outside on the outer skin area via a four-point joint 4th be kept. For this purpose, the four-point joint can comprise a plurality of lever elements, each of which ends with the outer skin area 4th and elsewhere with the wind control element 8th are connected and via which the wind control element 8th relative to the outer skin area 4th is pivotable.

As in 2nd can be recognized is the wind control element 8th adjustable in length. The wind control element 8th can be between one in 1 first length shown and one in 3rd shown second length can be adjusted. For this purpose, the wind control element comprises 8th a length adjustment device, not shown in the figures, by means of which the length of the wind guiding element 8th from its first end 11 until its second end 12th is adjustable. Adjusting the length of the wind deflector 8th enables a particularly precise adjustment of the aerodynamics of the passenger car 2nd .

In the steeper lower area 7 can on the tailgate 3rd a light signal device, not shown in the figures, which is in the first position 9 of the wind control element 8th from the wind deflector 8th is covered to the outside and in the second position 10th of the wind control element 8th from the wind deflector 8th is released. This results from the pivotable wind deflector 8th a design area in the steep lower area 7 the outer skin area 4th . The light signal device can comprise a plurality of light-emitting diodes, by means of which the passenger car brakes 2nd can be displayed and / or a pulsating warning triangle can be issued in the event of a breakdown and / or information for a passenger car 2nd subsequent traffic can be output.

By adjusting the aerodynamics of the passenger car 2nd by means of the wind control element 8th can advantageously particularly low vehicle emissions of the passenger car 2nd be achieved.

Overall, the tailgate allows 3rd an optimization of the aerodynamics of the passenger car 2nd and an improvement in downforce of the passenger car 2nd .

Reference list

1

Rear area

2nd

Passenger cars

3rd

Tailgate

4th

Outer skin area

5

Tear-off edge

6

upper area

7

lower area

8th

Wind deflector

9

first position

10th

second position

11

first end

12th

second end

13

hinge

Claims (9)

Tailgate (3) for a passenger car (2), by means of which a rear opening of the passenger car (2) can be closed and which comprises an outer skin area (4) which at a tear-off edge (5) from a flatter upper area (6) into a steeper lower area Area (7) merges with a wind deflector (8) which can be shifted from a first position (9) to a second position (10) by means of a displacement device, characterized in that the wind deflector (8) is provided in the outer skin region (4) , which from the first position (9), in which it is at least essentially integrated into a surface of the steeper lower region (7), into the second position (10), in which this extends from the tear-off edge (5) the flat upper region (6) extends, is displaceable. Tailgate (3) after Claim 1 , characterized in that in the second position (10) the wind guide element (8) is arranged in one plane with the upper region (6). Tailgate (3) after Claim 1 , characterized in that in the second position (10) the wind guide element (8) is arranged at an angle relative to a plane predetermined by the upper region (6). Tailgate (3) according to one of the preceding claims, characterized in that the wind deflector (8) over at least over 70 percent, in particular at least over 80 percent, in particular at least over 90 percent, of an entire width of the tailgate (3), in particular completely the entire width of the tailgate (3) extends. Tailgate (3) according to one of the preceding claims, characterized in that the wind deflector (8) is held on the outside of the outer skin area (4) so as to be pivotable about a pivot axis. Tailgate (3) according to one of the Claims 1 to 4th , characterized in that the wind-guiding element (8) is held on the outside of the outer skin area (4) so as to be pivotable via a four-point joint. Tailgate (3) according to one of the preceding claims, characterized in that the wind guiding element (8) has a first end (11) and a free second end (12) held on the outer skin region (4) and a length adjustment device is provided, by means of which a Length of the wind deflector (8) from the first end (11) to the second end (12) is adjustable. Tailgate (3) according to one of the preceding claims, characterized in that a light signal device is arranged in the lower region (7), which in the first position (9) of the wind control element (8) is covered by the wind control element (8) and by means of which a light signal can be output. Method for operating a tailgate (3) for a passenger car (2), by means of which a rear opening of the passenger car (2) can be closed and which comprises an outer skin area (4) which, at a tear-off edge (5), consists of a flatter upper area (6) merges into a steeper lower area (7), in which a wind-guiding element (8) is shifted from a first position (9) to a second position (10) by means of a displacement device, characterized in that the wind-guiding element (8) in the outer skin area (4 ) is provided and by means of the displacement device from the first position (9), in which it is at least essentially integrated into a surface of the steeper lower region (7), into the second position (10), in which it starts from the tear-off edge (5) extends in extension of the flat upper region (6), is displaced.

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