DE102019212029A1 - Vehicle door for a motor vehicle and method for providing a ramp for a vehicle opening of a motor vehicle - Google Patents

Abstract

The invention relates to a vehicle door (1) for a motor vehicle (50), comprising at least one door leaf (2) and at least one suspension device (3), the at least one door leaf (2) being mechanically movably connected to the at least one suspension device (3) and can be fastened to a vehicle opening (51) of the motor vehicle (50) by means of the at least one suspension device (3), and wherein the at least one door leaf (2) has a plurality of segments (4), the segments (4) one inside the other are nested, so that the segments (4) can be extended telescopically and as a result, at least in an extended state with the vehicle door (1) open, a ramp (5) for bridging a height difference between a floor level (52) of the motor vehicle (50) and an underground (10) ) outside of the motor vehicle (50). The invention also relates to a method for providing a ramp (5) for a vehicle opening (51) of a motor vehicle (50).

Description

The invention relates to a vehicle door for a motor vehicle and a method for providing a ramp for a vehicle opening of a motor vehicle. The invention also relates to a motor vehicle.

Devices are known with which a wheelchair can be transported into an interior of a motor vehicle. Examples are ramps or lifting platforms. Lifting platforms for buses are, for example, from the WO 92/21532 A1 or the U.S. 4,281,744 A known.

From the US 6,378,927 B1 a stowable loading ramp for a vehicle is also known. This includes a tailgate that is operable between a closed vertical position and an open horizontal position, a top flap hinged to the tailgate, a lower flap hinged to the top flap, and the top and bottom flaps Lower flaps are operable between a stowed horizontal position and an extended, downwardly angled ramp position.

The invention is based on the object of improving a vehicle door for a motor vehicle and a method for providing a ramp for a vehicle opening of a motor vehicle.

The object is achieved according to the invention by a vehicle door having the features of claim 1 and a method having the features of claim 10. Advantageous embodiments of the invention emerge from the subclaims.

In particular, a vehicle door for a motor vehicle is created, comprising at least one door leaf and at least one suspension device, the at least one door leaf being movably mechanically connected to the at least one suspension device and being able to be fastened to a vehicle opening of the motor vehicle by means of the at least one suspension device, and wherein the at least one door leaf has a plurality of segments, the segments being nested in one another so that the segments can be extended telescopically and thereby at least in an extended state with the vehicle door open a ramp for bridging a height difference between a floor level of the motor vehicle and a surface outside the motor vehicle form.

Furthermore, in particular a method for providing a ramp for a vehicle opening of a motor vehicle is made available, the motor vehicle comprising at least one vehicle door according to the invention, comprising: opening the at least one door leaf of the at least one vehicle door, extending the telescopic segments of the at least one door leaf, arranging the telescopically extended segments, so that a ramp for bridging a height difference between a floor level of the motor vehicle and a surface outside the motor vehicle is formed.

The vehicle door and the method make it possible to provide a ramp in a simple manner, in particular for loading and unloading a wheelchair. This is achieved in that a door leaf of the vehicle door comprises telescopically extendable segments which, in the extended state, form a ramp for bridging a height difference between a floor level of the motor vehicle and a surface outside the motor vehicle. Since the segments can be nested telescopically, the ramp can be stowed in the door leaf when not in use.

The vehicle door requires only a small amount of space, since the possibility of stowing the segments in the at least one door leaf means that less installation space is required in an interior of the motor vehicle. In addition, the ramp can be safely stowed in the at least one door leaf, so that damage to the ramp can be avoided.

A material from which the vehicle door is formed can in principle be any material, provided that it is suitable for forming a vehicle door and a ramp. In particular, one or more materials are selected that are usually used in the motor vehicle, in particular in a body.

The at least one suspension device is used in particular to suspend or hang in and carry the at least one door leaf and to form a mechanical connection between the at least one door leaf and a body of the motor vehicle. The at least one suspension device can comprise a door frame. The at least one door leaf can rest flush with the door frame, at least when the vehicle door is closed. The at least one door leaf is mechanically movably connected to the at least one suspension device. Here, the at least one door leaf can execute a translational and / or rotational movement with respect to the at least one suspension device. The at least one door leaf can in particular be opened and closed by the movable connection with the at least one suspension device.

When the vehicle door is closed, the at least one door leaf closes the vehicle opening in particular.

The ramp formed by means of the segments when the vehicle door is open enables barrier-free access through the vehicle opening into an interior of the motor vehicle so that, for. B. a wheelchair user with a wheelchair can roll into or out of the interior of the motor vehicle.

A contour of an outside of the vehicle door, in particular a side of the at least one door leaf facing outward when the vehicle door is closed, in particular continues an external contour of the motor vehicle or is part of it.

In one embodiment it is provided that the vehicle door comprises at least one pivot joint, the at least one door leaf and the at least one suspension device being mechanically connected to one another via the at least one pivot joint. The at least one swivel joint is in particular arranged on the at least one suspension device in such a way that an axis of rotation of the at least one swivel joint runs horizontally at floor level or along the lower part of the vehicle opening, so that the at least one door leaf is pivoted down about the horizontal axis of rotation to open can. After opening the at least one door leaf, it is then already in a position in which the ramp can be formed by extending the segments.

The ramp can be designed as follows, for example. In a first measure, the at least one door leaf is partially lowered by pivoting it open so that the at least one door leaf does not yet touch the ground outside the motor vehicle. In a second measure, the segments of the at least one door leaf are extended. In a third measure, the at least one door leaf is lowered completely so that an outer segment of the at least one door leaf touches the ground outside the motor vehicle. The ramp is then ready for use. To retract the ramp, the measures described are carried out in reverse order, i.e. the at least one door leaf is raised, then the segments are fully retracted and the at least one door leaf is pivoted back upwards around the at least one swivel joint so that the vehicle door is closed.

In one embodiment it is provided that the vehicle door comprises at least one linear guide, the at least one door leaf and the at least one suspension device being mechanically connected to one another via the at least one linear guide. In this way it can be achieved that the at least one door leaf can be opened in a space-saving manner. For this purpose, for example, a linear guide is arranged on a right and a left side of the vehicle opening.

In one embodiment, the at least one swivel joint is mechanically connected to the at least one door leaf and the at least one linear guide. As a result, the at least one door leaf can be moved translationally and rotationally with respect to the at least one suspension device.

It can be provided that the at least one linear guide comprises a rail which is arranged on the suspension device, in particular a door frame. Furthermore, the at least one linear guide can have a rolling element, e.g. B. a sphere or a cylinder. The rolling element can be connected to the at least one door leaf, so that the at least one door leaf can be moved translationally and / or rotationally with respect to the at least one suspension device.

By moving the roller body along the rail, a height position of the at least one door leaf, more precisely of the roller body, can be shifted linearly. In addition, the at least one door leaf can be rotated around the roller body, as a result of which the at least one door leaf can be rotated about an axis of rotation relative to the at least one suspension device. The at least one door leaf can therefore, in particular, be moved linearly and / or rotationally at the same time and / or alternately. Due to the simultaneous and / or alternating linear and / or rotary movement of the at least one door leaf, the at least one door leaf can be opened in such a way that when opening or closing a smaller volume of space is swept by the at least one door leaf than when opening or closing by an exclusively rotational movement of the at least one door leaf. This is advantageous if there is only little space available for extending or retracting the ramp.

The at least one linear guide can be designed such that a maximum possible linear displacement of the at least one door leaf is dependent on a rotation of the at least one door leaf that has already taken place to open / close the entrance. This makes it possible to avoid unhindered linear displacement and undesired contact of the at least one door leaf with the substrate when opening / closing the at least one door leaf.

The at least one door leaf can furthermore comprise at least one guide element which guides the at least one door leaf on a path with simultaneous / alternating linear and / or rotary movement of the at least one door leaf, so that undesired contact between the at least one door leaf and the ground outside the motor vehicle can be prevented .

It can be provided that the at least one guide element supports the closing process. For this purpose, the at least one guide element can comprise a gas tension spring, for example.

In one embodiment it is provided that the vehicle door comprises at least one ramp actuator for extending and / or retracting the segments of the at least one door leaf. The at least one ramp actuator can, for example, be designed electromechanically, pneumatically and / or hydraulically. For example, the ramp actuator can include a spindle drive driven by an electric motor. The ramp actuator system can also include electromechanical (lifting) cylinders, electromechanical actuators, pneumatic and / or hydraulic cylinders. The segments can be extended and retracted automatically by the at least one ramp actuator.

It is provided in particular that the at least one ramp actuator is arranged in the interior of the at least one door leaf. It can be provided that at least one operating element for controlling the at least one ramp actuator is arranged on at least one side surface of the at least one door leaf.

The at least one ramp actuator can also be designed in such a way that an overall length of the ramp can be varied by a stepped gear. This allows the total length of the ramp to be adapted to a height difference.

In one embodiment it is provided that the vehicle door comprises at least one door leaf actuator for opening and / or closing the at least one door leaf. The door leaf actuator can, for example, be designed electromechanically, pneumatically and / or hydraulically. The door leaf actuator can in particular include electromechanical (lifting) cylinders, electromechanical actuators, pneumatic and / or hydraulic cylinders. If a linear guide is present, the door leaf actuator can for example comprise a linear drive or chain drive combined with it. The at least one door leaf can be opened and closed automatically by the at least one door leaf actuator.

The at least one door leaf actuator can be designed such that the at least one door leaf can be opened and closed in stages. This allows different positions of the at least one door leaf can be set, such. B. an intermediate position without contact to the ground, where the segments can be extended or retracted unhindered.

It can be provided that at least one operating element for controlling the at least one door leaf actuator is arranged on at least one side surface of the at least one door leaf.

The at least one door leaf actuator is in particular connected to the at least one ramp actuator in terms of signaling. As a result, for example, the at least one door leaf actuator can only close the at least one door leaf when the at least one door leaf actuator has received a signal from the at least one ramp actuator that the segments have completely retracted, etc. This can damage the ramp and / or other parts of the motor vehicle can be prevented when closing the at least one door leaf.

In one embodiment it is provided that the vehicle door comprises at least one handle element for opening and / or closing the vehicle door and / or for telescopically extending and / or retracting the segments. This allows the vehicle door, in particular the at least one door leaf, to be opened and closed manually. In particular, with a corresponding arrangement of the at least one handle element on the at least one door leaf or on an outer segment, the segments can be manually pulled out and pushed back in again.

In one embodiment it is provided that the vehicle door comprises at least one further door leaf, wherein the at least one door leaf and the at least one further door leaf are arranged on and connected to the at least one suspension device in such a way that the at least one door leaf and the at least one further door leaf have opposite opening directions. In particular, it is provided that the at least one door leaf can be pivoted about at least one swivel joint with a horizontal axis of rotation arranged on a lower side of the vehicle opening and the at least one further door leaf can be swiveled about at least one swivel joint arranged on an upper side of the vehicle opening with a horizontal axis of rotation. The at least one door leaf then opens by a downward pivoting movement, and the at least one further door leaf by upwardly pivoting movement.

A ratio of dimensions of the at least one door leaf to the at least one further door leaf can in principle be arbitrary. The dimensions of the at least two door leaves can be identical, for example, so the ratio can be, for example, 50:50 of the vehicle opening. Alternatively, it can be provided that the at least one door leaf has a larger dimension than the at least one further door leaf. As a result, a dimension of the segments of the at least one door leaf can be increased, as a result of which individual segments can have a larger area and a larger ramp can be provided (with the same number of segments).

In one embodiment, the at least one door leaf can end flush with the at least one further door leaf when the vehicle door is closed.

In an alternative embodiment, the at least one door leaf can at least partially overlap with the at least one further door leaf when the vehicle door is closed.

In one embodiment, the at least one door leaf and the at least one further door leaf are arranged on the same or the same linear guide (s). This makes it possible to reduce the design effort.

In one embodiment it is provided that the at least one further door leaf also has a plurality of further segments, the further segments being nested in one another so that the further segments can be extended telescopically. The further segments of the at least one further door leaf can be designed analogously to the further segments of the at least one door leaf.

In one embodiment, the vehicle door has a further ramp actuator and / or a further door leaf actuator for the at least one further door leaf. The further ramp actuator and / or the further door leaf actuator can be designed analogously to the at least one ramp actuator or to the at least one door leaf actuator. It can be provided that the ramp actuators and / or the door leaf actuators have at least partially common parts.

In one embodiment, the at least one further door leaf has at least one holding device, e.g. B. a gas spring. The at least one holding device can be combined with a guide element.

In a further-developing embodiment it is provided that the at least one further door leaf is designed and arranged on the at least one suspension device in such a way that the at least one further door leaf forms a weather canopy at least when the vehicle door is open. In this way, the ramp can be protected from the effects of the weather in the extended state, for example it can be prevented that rain hits the ramp or the ramp can be shaded in strong sunshine.

It can be provided that the vehicle door has a transport device with which a wheelchair can be driven up or down the ramp. The transport device can, for example, comprise a driven cable or belt pull, which is coupled to the wheelchair so that it can be pulled into an interior of the motor vehicle via the cable or the belt or the ramp can be lowered from the interior of the motor vehicle.

Furthermore, in particular, a motor vehicle is also created, comprising at least one vehicle door according to any of the described embodiments.

• 1 eine schematische Darstellung einer Ausführungsform der Fahrzeugtür;
• 2 eine schematische Darstellung einer weiteren Ausführungsform der Fahrzeugtür;
• 3 eine schematische Darstellung einer weiteren Ausführungsform der Fahrzeugtür.

The invention is explained in more detail below on the basis of preferred exemplary embodiments with reference to the figures. Here show:

• 1 a schematic representation of an embodiment of the vehicle door;
• 2 a schematic representation of a further embodiment of the vehicle door;
• 3 a schematic representation of a further embodiment of the vehicle door.

In 1 Figure 3 is a schematic representation of an embodiment of the vehicle door 1 shown. The vehicle door 1 includes a door leaf 2 and a hanging device 3 . The hanging device 3 is at a vehicle opening 51 of a motor vehicle 50 arranged and there with the motor vehicle 50 mechanically connected. The door leaf 2 is mechanically movable with the suspension device 3 via two swivel joints 6th connected. The door leaf 2 This can be done by one at the bottom of the vehicle opening 51 arranged axis of rotation 7th be pivoted and thereby opened and closed.

The door leaf 2 has a plurality of segments 4th on, with the segments 4th are nested within each other. This makes the segments 4th can be extended and retracted telescopically. Are the segments 4th extended, it becomes a ramp 5 formed having a height difference between a floor level 52 of the motor vehicle 50 and an underground 10 can bridge.

Over the ramp 5 A wheelchair user can manually or motorize a wheelchair through the vehicle opening 51 through into an interior of the motor vehicle 50 drive.

It can be provided that the vehicle door 1 a ramp actuator 8th for extending and / or retracting the segments 4th of the door leaf 2 includes. The ramp actuator 8th can work electromechanically, pneumatically and / or hydraulically, for example. For example, an electric motor with a spindle drive can extend and retract the segments 4th effect.

It can be provided that the vehicle door 1 at least one door leaf actuator 9 for opening and / or closing the at least one door leaf 2 includes. The ramp actuator 9 can work electromechanically, pneumatically and / or hydraulically, for example.

Through the actuators 8th , 9 can the door leaf 2 automatically expanded and collapsed again and the segments 4th to form the ramp 5 be retracted or extended automatically.

The vehicle door 1 then also includes in particular a control device (not shown) for controlling the ramp actuators 8th and / or the door leaf actuator 9 . The control device can be designed as a combination of hardware and software, for example as program code that is executed on a microcontroller or microprocessor. The control device controls in particular an automated opening and closing of the vehicle door 1 and an automated extension and retraction of the ramp 5 . Furthermore, the vehicle door 1 a sensor system (not shown), via which the control of the ramp actuator system 8th and / or the door leaf actuator 9 can be monitored, with detected sensor data being fed to the control device for this purpose.

Furthermore, the vehicle door 1 at least one control element (not shown), at least to open or close the door leaf 2 and / or an automated extension or retraction of the segments 4th cancel. Furthermore, it can also be provided that the vehicle door is controlled completely manually via the at least one operating element.

In 2 Figure 3 is a schematic representation of another embodiment of the vehicle door 1 shown. The embodiment shown is similar to that in FIG 1 The embodiment shown, the same reference symbols denote the same features and terms.

In contrast to that in the 1 The embodiment shown has the vehicle door 1 additionally one linear guide each 11 on a right and a left side of the vehicle door 1 on. The swivel joints 6th are for example as in the linear guide 11 guided rolling bearings (not shown) formed. The door leaf 2 can thereby along the linear guide 11 in the vertical direction over almost the entire length of a side edge of the vehicle opening 51 or the suspension device 3 moved in translation as well as rotatory around the swivel joint 6th to be turned around. This requires the door leaf 2 less space when opening and closing because of the door leaf 2 can slide down and up in a curve, as shown by the dashed lines of intermediate positions of the door leaf 2 is illustrated schematically.

It can be provided that the vehicle door 1 a handle element 12 for opening and / or closing the vehicle door 1 and / or for telescopic extension and / or retraction of the segments 4th includes.

In 3 Figure 3 is a schematic representation of another embodiment of the vehicle door 1 shown. The embodiment shown is largely like that in FIG 1 The illustrated embodiment is formed, the same reference symbols denote the same features and terms. Additionally includes the vehicle door 1 another door leaf 13 . The further door leaf 13 comprises at an upper edge of the vehicle opening 51 arranged further swivel joints 14th so that the further door leaf 13 around another horizontal axis 15th can be swiveled. This allows the door leaf 2 and the further door leaf 13 be pivoted in opposite opening directions and thereby opened.

The further door leaf 13 can have additional segments 16 include, which are retractable and extendable. This allows a length of the further door leaf 13 can be changed, for example to enlarge or reduce a weather canopy.

It can be provided that the further door leaf 13 a holding device 17th has, e.g. B. a gas spring. The at least one holding device 17th can with a guide element 18th be combined.

In particular, it can be provided that the further door leaf 13 designed in such a way and on the at least one suspension device 3 is arranged that the further door leaf 13 at least with the vehicle door open 1 a weather roof 19th trains.

It can be provided that the vehicle door 1 at least one further ramp actuator (not shown) for extending and retracting the further segments 16 includes. It can also be provided that the vehicle door 1 at least one more Door leaf actuator (not shown) for opening and closing the further door leaf 13 having. The further door leaf 13 automatically expanded and collapsed again and the other segments 16 , in particular for forming a weather roof, can be automatically retracted and extended.

The vehicle door 1 enables a ramp in a flexible manner, in particular in a space-saving manner 5 available, especially for a wheelchair user.

List of reference symbols

1

Vehicle door

2

Door leaf

3

Hanging device

4th

segment

5

ramp

6

Swivel joint

7th

Axis of rotation

8th

Ramp actuation

9

Door leaf actuators

10

Underground

11

Linear guide

12th

Handle element

13

another door leaf

14th

another swivel joint

15th

horizontal axis

16

another segment

17th

Holding device

18th

Guide element

19th

Weather roof

50

Motor vehicle

51

Vehicle opening

52

Floor level

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 9221532 A1 [0002]
• US 4281744 A [0002]
• US 6378927 B1 [0003]

Claims (10)

Vehicle door (1) for a motor vehicle (50), comprising: at least one door leaf (2), and at least one suspension device (3), wherein the at least one door leaf (2) is mechanically connected to the at least one suspension device (3) and can be attached to a vehicle opening (51) of the motor vehicle (50) by means of the at least one suspension device (3), and wherein the at least one door leaf (2) has a plurality of segments (4), wherein the segments (4) are nested in one another so that the segments (4) can be extended telescopically and as a result, at least in an extended state with the vehicle door (1) open, a ramp (5) for bridging a height difference between a floor level (52) of the motor vehicle ( 50) and a substrate (10) outside the motor vehicle (50). Vehicle door (1) after Claim 1 , characterized in that the vehicle door (1) comprises at least one swivel joint (6), the at least one door leaf (2) and the at least one suspension device (3) being mechanically connected to one another via the at least one swivel joint (6). Vehicle door (1) according to one of the preceding claims, characterized in that the vehicle door (1) comprises at least one linear guide (11), wherein the at least one door leaf (2) and the at least one suspension device (3) mechanically via the at least one linear guide ( ) are connected to each other. Vehicle door (1) according to one of the preceding claims, characterized in that the vehicle door (1) comprises at least one ramp actuator (8) for extending and / or retracting the segments (4) of the at least one door leaf (2). Vehicle door (1) according to one of the preceding claims, characterized in that the vehicle door (1) comprises at least one door leaf actuator (9) for opening and / or closing the at least one door leaf (2). Vehicle door (1) according to one of the preceding claims, characterized in that the vehicle door (1) has at least one handle element (12) for opening and / or closing the vehicle door (1) and / or for telescopically extending and / or retracting the segments (4 ) includes. Vehicle door (1) according to one of the preceding claims, characterized in that the vehicle door (1) comprises at least one further door leaf (13), wherein the at least one door leaf (2) and the at least one further door leaf (13) in this way on the at least one Suspension device (3) are arranged and connected to this so that the at least one door leaf (2) and the at least one further door leaf (13) have opposite opening directions. Vehicle door (1) after Claim 7 , characterized in that the at least one further door leaf (13) is designed and arranged on the at least one suspension device (3) in such a way that the at least one further door leaf (13) forms a weather roof (19) at least when the vehicle door (1) is open. Motor vehicle (50), comprising at least one vehicle door (1) according to one of the Claims 1 to 8th . Method for providing a ramp (5) for a vehicle opening (51) of a motor vehicle (50), wherein the motor vehicle (50) has at least one vehicle door (1) according to one of the Claims 1 to 8th comprises, comprising: opening the at least one door leaf (2) of the at least one vehicle door (1), extending the telescopic segments (4) of the at least one door leaf (2), arranging the telescopically extended segments (4) so that a ramp (5) designed to bridge a height difference between a floor level (52) of the motor vehicle (50) and an underground (10) outside the motor vehicle (50).

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