DE102013211168A1 - Vehicle with improved opening / closing element - Google Patents

Abstract

The invention relates to a vehicle, in particular a motor vehicle, comprising a first opening / closing element (2), at least one second opening / closing element (3) and / or a fan, an electric drive (4) for opening and / or closing the first opening / closing element (2), a control unit (5), and at least one sensor (7) for detecting an open and / or closed state of the second opening / closing element (3) and / or for detecting a state of the fan, The control unit (5) is set up to change at least one closing parameter for closing the first opening / closing element (2) depending on an open state of the second opening / closing element (3) and / or a state of the fan.

Description

State of the art

The present invention relates to a vehicle, in particular a motor vehicle, comprising improved opening / closing elements, wherein the vehicle can distinguish, in particular, an opening state and a closing state.

Vehicles are increasingly equipped with electric motor operated opening / closing elements, such as a tailgate or sunroof. In such electromotive operated elements must be ensured that an anti-trap is present or obstacle is detected in the closing. Furthermore, an optionally existing stiffness of the system should not lead to a shutdown of the electric drive. From the DE 103 16 097 A1 For example, a control device for opening and closing a door or the like is known in which a judgment of a pinched obstacle in a closing path of a tailgate is detected based on an engine rotational speed of the electric drive. Furthermore, from the DE 196 15 127 C1 a device for electronic monitoring of a sunroof known in which a pressure sensor detects pressure changes in the vehicle, which come about here due to a higher vehicle speed. This is to prevent erroneous closures. Despite all efforts, such electrical opening / closing elements still malfunction.

Disclosure of the invention

The vehicle according to the invention with the features of claim 1 has the advantage that malfunction during a closing operation of electrically operated opening / closing elements can be avoided. This is inventively achieved in that it is detected whether the vehicle is in an open state or a closed state and / or whether a fan or the like. On or off. Here, an open state is understood to mean that at least one further opening / closing element, which is in the open state, is present in addition to the first opening / closing element that can be operated by the electric motor. According to the invention, it has been found that by an existing internal pressure in the vehicle when all the doors, windows, sliding roofs, etc. are closed, a different closing behavior is present than in a case in which at least one of the opening / closing elements in the open position, or in a case where a fan (blower) is on or off. According to the invention, at least one closing parameter for closing the electromotive-operated opening / closing element is thus adapted as a function of the open or closed state of the vehicle or the state of the fan. Thereby, a number of malfunctions of the electric motor operated opening / closing element can be avoided. This is done according to the invention by means of a control unit and a sensor which detects an opening / closing state of opening / closing elements and / or a fan state. The control unit then changes at least one closing parameter, which is then adapted to the corresponding opening / closing state of the vehicle.

The dependent claims show preferred developments of the invention.

Preferably, the adjusted closing parameter is a resistance value of a stalling case detection device during the closing operation of the opening / closing member. Here, if any opening / closing member of the vehicle, e.g. a vehicle door, open, is set a smaller threshold for trap detection.

More preferably, the closing parameter, which is adjusted by the control unit during the closing operation, a target speed of the electric drive of the opening / closing element to be closed. Here, according to the invention, if another opening / closing element of the vehicle, e.g. a vehicle door is opened, set a lower target speed of the electric drive as the closing parameter value. Particularly preferably, a reduced setpoint speed is predetermined if the first opening / closing element is located shortly before the closing end position.

According to a further preferred embodiment of the invention, the closing parameter is an air pressure in a door seal. Here, when a second opening / closing element is opened, the air pressure in the door seal can be increased, so that when closing an increased resistance is applied by the door seal. If all the vehicle's other opening / closing elements are closed, the air pressure in the door seal can be reduced, resulting in a gentler door closing.

More preferably, the closing parameter, which is adjusted by the control unit during the closing operation, a damping capacity of a door damper. As described in the door seal, a damping capacity of a door damper in response to an open position or closed position of the second opening / closing element can be adjusted.

Preferably, the vehicle further comprises a variable doorstop whose position is variable in dependence on an open position / closed position of the second opening / closing element. Here, for example, an actuator may be provided, which changes a variable position of the door stopper and is controlled by the control unit. Other variable doorstops or stops are conceivable.

More preferably, the closing parameter is a strength (stage) of an activated fan of the vehicle.

Particularly preferably, an adaptation of the closing parameter value takes place simultaneously with a start of a closing operation of the electromotive-operated opening / closing element.

Preferably, the control unit continuously monitors the opening / closing state of the other opening / closing members.

More preferably, a plurality of closing parameters are adapted simultaneously in an open vehicle.

More preferably, the electric motor-operated first opening / closing element is a tailgate of a vehicle or a vehicle door or a window or a sliding roof.

Further, the present invention relates to a method for controlling a closing operation of an electric motor operated first opening / closing member of a vehicle. The inventive method comprises the steps of detecting whether another opening / closing element of the vehicle is opened when the electromotive-operated first opening / closing element is to be closed and adjusting at least one closing parameter for closing the first opening / closing element, if one another opening / closing element is open. In this way, a closing parameter can be adapted to a different internal pressure in the vehicle, if another opening / closing element is opened. As a result, malfunctions of the electric motor operated opening / closing element are reduced. The adjusted closing parameter is preferably a target drive number of the electric drive of the first opening / closing element and / or a resistance value for a blocking case recognition device during the closing operation of the first opening / closing element.

Particularly preferably, it is monitored during the entire closing operation of the first opening / closing element whether further opening / closing elements of the vehicle remain open or not. If further opening / closing elements are closed, so that all opening / closing elements present on the vehicle are closed, a second adjustment of the closing parameter takes place according to the invention. The first electromotive operated opening / closing element is preferably a tailgate.

Brief description of the drawings

Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. In the drawing is:

1 a schematic representation of a vehicle according to the invention according to an embodiment of the invention,

2 a schematic representation of a flow chart according to the invention for adjusting a resistance value when closing a tailgate and

3 a schematic representation of an inventive flowchart for adjusting a target speed of an electric drive towards the end of the closing operation.

Preferred embodiments of the invention

The following is with reference to the 1 to 3 an inventive vehicle 1 how a method according to the invention described in detail.

How out 1 is apparent, the vehicle includes 1 as the first opening / closing element 2 a tailgate, which is operated by an electric motor. This is an electric drive 4 intended. The electric drive 4 is with a control unit 5 connected.

Furthermore, the vehicle comprises a first sensor 6 , which at a second opening / closing element 3 is arranged, which is a vehicle door in this embodiment. The first sensor 6 is also with the control unit 5 connected.

Furthermore, the vehicle includes 1 a second sensor 7 who is at a castle 8th the tailgate is arranged.

The first and second sensor 6 . 7 capture whether the respective opening / closing element 2 . 3 is in open or closed state.

The control unit 5 is set up, at least one closing parameter for closing the first opening / closing element 2 depending on the opened state of the second opening / closing element 3 adapt. The invention has namely found that a closing kinematic of the tailgate in a closed vehicle, ie when all other opening / closing elements such as doors, windows, sunroof, etc., are closed is different from a closing kinematics when at least one of the opening / closing elements open is. In fact, if all the other opening / closing elements of the vehicle are closed, there is an increased internal pressure during the last section of the closing process of the tailgate, so that this can lead to triggering of the blocking event detection in the prior art and the tailgate opens again undesirable. Even subsequently arranged special attachments, such as a spare or snow loads or the like, can affect the opening kinematics of the tailgate, so that a blocking case is displayed, although in fact no blocking case is present. This is where the inventive idea intervenes by the control unit 5 use different closing parameters for the tailgate when all other opening / closing elements are closed, or when at least one of the other opening / closing elements is open. Additionally or exclusively, a function (ON, OFF, set blower power) of a fan may also be provided by the control unit 5 get noticed.

Since sensors for detecting an opening state of the opening / closing elements of the vehicle are usually already present, this does not require any additional additional equipment.

2 schematically shows a flowchart of the inventive method in a determination of a stalling detection threshold.

In step S1, it is determined that the first opening / closing unit 2 in closing movement (arrow A in 1 ) is located.

In step S2, the control unit checks 5 whether a second opening / closing element 3 , in this case the left back door, is open (arrow B in 1 ).

If a second opening / closing element 3 is open (J (YES) in 2 ), the flow advances to step S3, setting a reduced stall case detection threshold.

If no other opening / closing element is open (N (NO) in 2 ), the process proceeds to step S4.

In step S4, the normally existing value for the stalling case identification which is greater than that set in step S3 is maintained.

During the closing process of the tailgate, it is constantly checked whether the threshold for blocking event detection is exceeded or not.

If the lock-up detection threshold is exceeded (step S5), the closing operation of the tailgate is ended (step S6). Here, the control unit 5 programmed so that the movement of the tailgate is simply stopped or the control unit 5 is programmed to open the tailgate again.

If the threshold for the stall case detection is not exceeded (N) in step S5, the movement of the second open / close member becomes 2 continued (step S7), and the threshold is continuously monitored. (Return)

3 shows a second embodiment for an adjustment of a parameter value during a closing operation of the first opening / closing element 2 , This second parameter value is a setpoint speed of the electric drive 4 when the first opening / closing element 2 near the castle 8th just before it locks into the lock 8th located. According to the invention, in this case a speed of the first opening / closing element 2 just before snapping into the lock 8th be reduced in order to avoid in particular that the first opening / closing element 2 at high speed in the lock 8th crashes. This could damage the lock mechanism.

In 3 At step S1, the first opening / closing element becomes 2 by means of the electric drive 4 closed (arrow A in 1 ).

In step S2, it is again queried whether a second opening / closing element 3 is open. If so (J), the flow advances to step S8.

In step S8, a change in a parameter value is a lower target speed of the electric drive 4 defined if the first opening / closing element 2 near the castle 8th located. This can be done, for example, by means of the second sensor 7 be detected.

If no further opening / closing element 3 is opened (N), the flow proceeds from step S2 to step S9.

In step S9, a predetermined, higher target speed in the region of the castle 8th maintained, since due to the closed opening / closing elements, an increased back pressure or resistance for the tailgate drive during the last portion of the closing operation is present. Despite the higher speed of the electric drive, the tailgate does not crash into the lock 8th because inside the vehicle there is an increased back pressure.

The step S10 in the process merely closes the first opening / closing element 2 with the through the control unit 4 set target speed (increased or reduced).

The preceding explanations make it clear that in the vehicle according to the invention when closing a first opening / closing element operated by an electric motor 2 a check of the vehicle is made to see if there are any more opening / closing elements 3 are open or closed. Should all other opening / closing elements 3 to be closed, namely results towards the end of the closing process just before closing the first opening / closing element 2 an increased resistance by the existing back pressure in the vehicle, so that in the prior art often an error message is detected and, for example, the tailgate is opened undesirable again. The present invention thus distinguishes, for the first time, whether the vehicle is in a closed or open state and fits according to closing parameters of the first opening / closing element 2 at. As a result, faulty closing operations can be avoided. Since according to the invention the already installed components and sensors can be used, there is only a small additional effort in the control unit 5 ,

Furthermore, the present invention may also consider the condition of a fan (blower). For example, The fan can be switched off briefly when the first opening / closing element is close to the closed position. Subsequently, that is, after closing, the fan can be turned on again.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 10316097 A1 [0002]
• DE 19615127 C1 [0002]

Claims (14)

Vehicle, in particular motor vehicle, comprising a first opening / closing element ( 2 ), - at least one second opening / closing element ( 3 ) and / or a fan, - an electric drive ( 4 ) for opening and / or closing the first opening / closing element ( 2 ), - a control unit ( 5 ), and - at least one sensor ( 7 ) for detecting an open and / or closed state of the second opening / closing element ( 3 ) and / or for detecting a state of the fan, - wherein the control unit ( 5 ) is arranged, at least one closing parameter for closing the first opening / closing element ( 2 ) in response to an open state of the second opening / closing element ( 3 ) and / or a condition of the fan. A vehicle according to claim 1, characterized in that the closing parameter is a resistance value of a stalling-detecting device during the closing operation of the first opening / closing element (FIG. 2 ). Vehicle according to claim 1 or 2, characterized in that the closing parameter is a set speed of the electric drive ( 4 ), in particular if the first opening / closing element ( 2 ) in an area of a castle ( 8th ). Vehicle according to one of the preceding claims, characterized in that the closing parameter is an air pressure in a door seal. Vehicle according to one of the preceding claims, characterized in that the closing parameter is a damping capacity of a door damper. Vehicle according to one of the preceding claims, characterized in that the closing parameter is a position of an adjustable door stopper or the like. Vehicle according to one of the preceding claims, characterized in that the closing parameter is a blower power of a switched-on fan. Vehicle according to one of the preceding claims, characterized in that an adaptation of a closing parameter simultaneously with a start of the closing operation of the first opening / closing element ( 3 ) he follows. Vehicle according to one of the preceding claims, characterized in that the control unit ( 5 ) is set during a closing operation of the first opening / closing element ( 2 ) continuously a state of further opening / closing elements ( 3 ) of the vehicle for monitoring. Vehicle according to one of the preceding claims, characterized in that the first and / or second opening / closing element is a tailgate or a vehicle door or a window or a sunroof. Method for controlling a closing operation of an electrically actuatable first opening / closing element ( 2 ) of a vehicle, in particular a tailgate, comprising the steps: - detecting whether another opening / closing element ( 3 ) of the vehicle is open, and - if another opening / closing element ( 3 ) of the vehicle, adjusting at least one closing parameter for closing the first opening / closing element ( 2 ). A method according to claim 11, characterized in that the adjusted closing parameter is a target drive speed of an electric drive ( 4 ), in particular if the first opening / closing element ( 2 ) just before intervening in a lock ( 8th ). Method according to claim 11 or 12, characterized in that the adapted closing parameter has a resistance value of a blocking-case recognition device during the closing operation of the first opening / closing element ( 2 ). Method according to one of claims 10 to 13, characterized in that during the closing operation of the electrically operated first opening / closing element ( 2 ) continuously monitoring whether at least one further opening / closing element ( 3 ) is open or not.

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