DE102008056201A1 - Motor vehicle, has sensor for contactless detection of obstacle and arranged at vehicle part so that detection region is moved during movement of vehicle part and runs ahead in movement direction of vehicle part - Google Patents

Abstract

The vehicle has a vehicle part e.g. rear flap and/or door, movable into open and closed positions, and a sensor (9) for contactless detection of an obstacle in a detection region in which the part is movable. A controller (11) is controllably connected with an actuating device (3) such that the movement of the part is continued with reduced speed and force, stopped, reversed or restricted during detection of the obstacle. The sensor is arranged at the part so that the detection region is moved during movement of the part and runs ahead in a movement direction of the part. The sensor is formed as a distance sensor such as ultrasound sensor, radar sensor and/or infrared sensor.

Description

The The invention relates to a motor vehicle with at least one in one Open and a closed position adjustable vehicle part, in particular a flap and / or a door, with a at least one actuator having actuator for the vehicle part, with at least one sensor for non-contact Detecting an obstacle in a detection area, in the the vehicle part is adjustable, and with one with the at least a sensor-connected control device, which in such a way with the actuating device in control connection is that the adjusting movement of the vehicle part when detecting the obstacle at a reduced speed and force is continued, stopped, reversed or locked.

Such a motor vehicle, in which the vehicle part is a mobile roof, is off DE 102 48 762 B4 known. To adjust the top between an open and a closed position, the top has an actuator that has an electro-hydraulic actuator. The actuator is controlled by a controller which cooperates with a rain sensor and a remote key and initiates an automatic top movement when requested by the driver by means of a button in the motor vehicle or by the remote key and upon detection of rainfall by the rain sensor.

Around the automatic top movement without involvement of a motor vehicle user and without being able to carry it out safely, the control device has several on the body of the motor vehicle arranged sensors configured as a light transmitting and receiving device are. With the help of the sensors several light levels are monitored, which are arranged on the outside of the vehicle and the movement space of the hood. When the light planes of an object or human body part is penetrated a reflection deviation measured and in the control device is evaluated. If such a reflection deviation during the adjustment of the top is determined, the adjusting movement the roof continued with reduced speed and power, stopped or reversed. However, the motor vehicle has the disadvantage that arranged at various installation locations sensors and the evaluation of their measurement signals a relatively large effort require.

It There is therefore the task of a motor vehicle of the aforementioned To create kind, in which the from the sensor and the control device existing sensors a simple and inexpensive Construction possible.

According to the invention solves this problem in that the at least one Sensor is arranged on the vehicle part such that the detection area of the sensor when moving the vehicle part with this moved is and in the adjustment of the vehicle part this at least partially ahead. Under an adjustment is the one Understood the direction in which the vehicle part when adjusting between the closed position and the open position relative to a vehicle part supporting base part of the motor vehicle, such as z. B. a roof or an A, B or C-pillar moves.

In Advantageously, the invention makes it possible with only a single sensor system in the direction of adjustment in front of the vehicle part space easily on the To monitor the presence of an obstacle. Since the Sensor is moved with the vehicle part, the sensor also needs with a large adjustment range of the vehicle part only a relatively small space in advance of the moving vehicle part to monitor. The sensor and the control device allow thereby a simple and inexpensive construction.

at an advantageous embodiment of the invention, the detection area of the sensor pointing parallel to a direction of adjustment of the vehicle part Surface area of the vehicle part a larger Dimension on than in the direction of the normal to this surface area. This makes it possible, the adjustment of the vehicle part in the Occurrence of an obstacle to stop only when the vehicle part is positioned close to the obstacle. When the vehicle part For example, a tailgate and the obstacle of a garage ceiling is, the tailgate when opening can close to the garage ceiling be positioned so that the tailgate at least partially can be opened to the motor vehicle to or discharged.

Of the Detection range of the sensor preferably has an elongated, preferably elliptical cross-section, which increases with increasing Distance from the sensor widens. Such a sensor allows a simple and inexpensive construction.

It is advantageous if the opening angle which the detection area has in its main extension plane is between 60 ° and 92 °, in particular between 65 ° and 87 ° and preferably between 70 ° and 82 °, and / or if the opening angle which the detection area in a arranged at right angles to its main plane of extension, extending through the sensor level, zwi 8 ° and 32 °, in particular between 12 ° and 28 ° and preferably between 16 ° and 24 °. With such a detection area, a space located in the direction of the adjustment movement of the vehicle part in front of a large contour surface of the vehicle part can be reliably monitored for the occurrence of a collision object. In this case, the detection area is dimensioned so that the vehicle part can be positioned close to the collision object and the vehicle part can still be stopped in time before the obstacle when an obstacle occurs.

at a preferred embodiment of the invention is that Vehicle part about a pivot axis pivotable with a base part connected, wherein the sensor at one adjacent to the pivot axis Edge region of the vehicle part is arranged. The detection area The sensor can be designed such that it is in a normal to the pivot axis extending plane, starting from the sensor to the remote from the pivot axis edge region of Vehicle part widens out. This will be an obstacle in the of the pivot axis remote edge region of the vehicle part, on the the vehicle part when pivoting its largest Verstellgeschwindigkeit, with larger Distance to the vehicle part detected as at a location closer is arranged on the pivot axis and at the adjusting speed is lower.

• – der erste Sensor ein Hindernis detektiert und sich die Heckklappe in einem oberen Teilbereichs ihres Bewegungsraums befindet und/oder
• – der zweite Sensor ein Hindernis detektiert und sich die Heckklappe in einem unteren Teilbereichs ihres Bewegungsraums befindet.

It is advantageous if the vehicle part is designed as a tailgate, which has at its upper edge region connected to the control device first sensor when below the tailgate preferably at least one second sensor connected to the control device is arranged on a bumper, and if the control device with so the control device is in control connection that the adjustment movement of the tailgate locked, continued at reduced speed and force, stopped or reversed, when

• - The first sensor detects an obstacle and the tailgate is located in an upper portion of their range of motion and / or
• - The second sensor detects an obstacle and the tailgate is located in a lower portion of their range of motion.

The Exterior surface of the tailgate may be in a vehicle longitudinal direction extending vertical plane a deviating from a straight line, for example have a curved or angled course, in which the lower portion of the movement space for the first, for example above a rear window arranged sensor is not visible, because the tailgate obscures or shades this subarea. The additional second sensor allows nevertheless, also to monitor this subarea and possibly a collision of the tailgate with an obstacle located there to avoid. It is even possible that the at least one second sensor also used for other vehicle functions is, such. B. a parking aid or a distance warning device.

at another advantageous embodiment of the invention has Vehicle part a door handle, wherein the sensor on the door handle and / or a recessed handle located behind the door handle is arranged. This allows the sensor to be inconspicuous in the vehicle part will be integrated. In addition, at the Production of the vehicle part of the assembly work can be reduced because the sensor together with the door handle, for example can be installed in a body part of the vehicle part. there It is even possible that the door handle with the Sensor form an assembly, the total of the body part is mounted.

Advantageous is when the main extension plane of the detection range of Sensor compared to the main extension plane of the vehicle part such is tilted, that starting from the sensor in the detection direction with increasing distance from the sensor, the distance between the mentioned Main extension levels increases. The sensor can then be on the Be arranged vehicle part that at a location at the one Collision with an obstacle is particularly critical, the obstacle with a greater distance to the contour surface of the vehicle part can be detected as at one of these Spot spaced location.

Of the at least one sensor is preferably designed as a distance sensor, preferably as an ultrasonic sensor, radar sensor and / or infrared sensor. The sensor is then inexpensive to produce. The sensor may also include an optical transmitter and a receiver associated therewith for detecting the one emitted by the transmitter, one in the detection area located obstacle back reflected radiation of the Transmitter have. The motor vehicle can also have multiple sensors have, which cooperate with the control device.

In a preferred embodiment of the invention, the actuating device has a braking device for stopping the adjusting movement of the vehicle part, wherein the braking device can be woken up from a rest state to a standby state, wherein the at least one sensor has a first detection area and a second detection area further from the vehicle part is spaced as the first detection area, wherein the at least one sensor means for detecting the movement pattern of an obstacle located in the second detection area ses, wherein the control means comprises means for extrapolating the movement of the obstacle and the adjusting movement of the vehicle part, wherein the control device is configured such that the braking device is woken up when the extrapolation of the movements an estimated collision between the vehicle part and the obstacle is determined and wherein the control device is in control connection with the actuating device such that the adjusting movement of the vehicle part is continued, stopped, reversed or locked at reduced speed and force when the obstacle is detected in the first detection range. In the case of detection of obstacles moving relative to the motor vehicle, the braking device can then be "sharpened" in the event of an approach in order to enable a faster reaction of the braking device in the event that the obstacle should subsequently penetrate into the first detection area. When waking the brake device, for example, in a hydraulic brake device, a hydraulic pressure can be established.

following Embodiments of the invention with reference to the drawing explained in more detail. It shows:

1 2 shows a block diagram of an actuating device for a vehicle part which can be adjusted into an open and a closed position, wherein the actuating device is connected to a sensor device and an access control device,

2 a side view of a first embodiment of a motor vehicle,

3 a rear view of the in 3 shown motor vehicle,

4A and 4B a rear view of the motor vehicle,

5 a side view of a second embodiment of the motor vehicle, and

6 a rear view of the in 5 shown motor vehicle.

A motor vehicle 1 has an adjustable in an open and a closed position vehicle part 2 that with an actuator 3 is in drive connection. The actuating device 3 indicates the automatic opening and closing of the vehicle part 2 an actuator 4 and a drive device 5 for that. The actuator 4 may for example have an electric motor and / or a hydraulic or pneumatic lifting cylinder.

As in 1 is recognizable, is the drive device 5 over a bus 6 , such as B. a fieldbus, with a sensor device 7 and an access control device 8th for the motor vehicle 1 connected. The access control device 8th has a control unit 8a that with one from the user of the motor vehicle 1 portable transmitter 8b and / or one on the motor vehicle 1 arranged switch cooperates. When operating the transmitter 8b transmits the control unit 8a over the bus 6 an opening or closing command to the drive device 5 , the opening or closing of the vehicle part 2 triggers.

The sensor device 7 has for contactless detection of a movement in the space of the vehicle part 2 located obstacle a sensor 9 on, on the vehicle part 2 is arranged so that he himself when adjusting the vehicle part 2 moved with this. The sensor 9 is so on the vehicle part 2 positioned that at least part of the detection area 10 in which the sensor 9 is sensitive to the obstacle when adjusting the vehicle part 2 this leads in the direction of adjustment.

With the sensor 9 is a control device 11 connected via the bus 6 such with the drive device 5 in control connection is that the adjusting movement of the vehicle part 2 stopped or locked when the sensor 9 in the movement space in which the vehicle part 2 is moved when adjusting, an obstacle detected.

At the in 2 embodiment shown is the vehicle part 2 a door, a body part and a window arranged thereon 12 having. The door is out of the in 2 shown closed position initially pivotable about an approximately vertical pivot axis to the outside and then approximately parallel to the vehicle longitudinal axis to the rear of the motor vehicle 1 slidable. The sensor 9 is above the window 12 arranged on a window frame of the body part.

In 2 and 3 it can be seen that the detection area 10 of the sensor 9 parallel to one in the adjustment direction 13 of the vehicle part 1 pointing surface area 14 of the vehicle part 2 has a larger dimension than in the direction of the normal to this surface area 14 , It can also be seen that the detection area 10 - starting from the sensor 9 to a location of the detection area spaced therefrom 10 - with increasing distance from the sensor 9 both in the side view of the motor vehicle ( 2 ) as well as in the rear view ( 3 ) Expands approximately fan-shaped. The detection area has this 10 an approximately elliptical cross-section.

In its main extension level has the detection range 10 an opening angle α of about 76 ° and arranged at a right angle to its main plane of extension, through the sensor 9 extending plane is the opening angle β of the detection area 10 about 20 °.

At the in 4A embodiment shown is the vehicle part 2 a tailgate around an approximately horizontal pivot axis 15 pivotable with one on the roof of the motor vehicle 1 arranged carrier part is connected. The sensor 9 is at one to the pivot axis 15 adjacent edge region of the vehicle part 2 arranged over a Heckschei be. The detection area 10 expands - starting from the sensor 9 to a location of the detection area spaced therefrom 10 - fan-shaped downwards. The detection area 10 ends slightly below the lower edge region of the vehicle part 2 ,

As in 4B can be seen, the motor vehicle 1 in addition to the first sensor 9 second sensors 9 ' also having the control device 11 are connected and below the tailgate on a bumper 20 are arranged. In this case, the controller stands 11 such with the actuator 3 in control connection is that the adjustment movement of the tailgate is locked or stopped when the first sensor 9 in his detection area 10 detects an obstacle and the tailgate is located in an upper portion of their range of motion. The adjustment movement of the tailgate is locked or stopped even if at least one second sensor 9 ' in his detection area 10 ' detects an obstacle and the tailgate is located in a lower portion of their range of motion.

At the in 5 and 6 embodiment shown is the vehicle part 2 a door, the door handle on its outside about halfway up 16 at which the sensor 9 is arranged. In 5 it is recognizable that the door handle 16 adjacent to the front edge region of the vehicle part 2 is arranged and that the detection area 10 in the side view on the outside of the vehicle part 2 fan-shaped expands. In this case, a first side edge of the detection area runs 10 , from the sensor 9 approximately parallel to the front edge region of the vehicle part 2 to the lower end of the vehicle part 2 , A second side edge of the detection area 10 runs from the sensor 9 approximately in the vehicle longitudinal direction to the rear end of the vehicle part 2 ,

As in 6 is recognizable, is the main extension plane 17 of the detection area 10 opposite the main extension plane 18 of the vehicle part 2 tilted so that the distance between these main extension planes 17 . 18 starting from the sensor 9 in detection direction 19 with increasing distance from the sensor 9 increases.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10248762 B4 [0002]

Claims (10)

Motor vehicle ( 1 ) with at least one vehicle part which can be adjusted into an open and a closed position ( 2 ), in particular a flap and / or a door, with at least one actuator ( 4 ) having actuating means ( 3 ) for the vehicle part ( 2 ), with at least one sensor ( 9 ) for non-contact detection of an obstacle in a detection area ( 10 ), in which the vehicle part ( 2 ) is adjustable, and with one with the at least one sensor ( 9 ) ( 11 ) so connected to the actuator ( 3 ) in control connection is that the adjusting movement of the vehicle part ( 2 ) is continued, stopped, reversed or locked when the obstacle is detected at reduced speed and force, characterized in that the at least one sensor ( 9 ) on the vehicle part ( 2 ) is arranged such that the detection area ( 10 ) of the sensor ( 9 ) when adjusting the vehicle part ( 2 ) is moved with this and in the adjustment direction of the vehicle part ( 2 ) leads this at least in some areas. Motor vehicle ( 1 ) according to claim 1, characterized in that the detection area ( 10 ) of the sensor ( 9 ) parallel to a direction of adjustment of the vehicle part ( 2 ) surface area ( 14 ) of the vehicle part ( 2 ) has a larger dimension than in the direction of the normal to this surface area ( 14 ). Motor vehicle ( 1 ) according to claim 1 or 2, characterized in that the detection area ( 10 ) of the sensor ( 9 ) has an elongated, preferably elliptical cross-section, which increases with increasing distance from the sensor ( 9 ) expands. Motor vehicle ( 1 ) according to claim 3, characterized in that the opening angle (α) that the detection area (α) 10 ) in its main extension plane ( 17 ), between 60 ° and 92 °, in particular between 65 ° and 87 °, and preferably between 70 ° and 82 °, and / or that the opening angle (β), the detection range ( 10 ) at a right angle to its main plane of extension ( 17 ), through the sensor ( 9 ) extending plane, between 8 ° and 32 °, in particular between 12 ° and 28 °, and preferably between 16 ° and 24 °. Motor vehicle ( 1 ) according to one of claims 1 to 4, characterized in that the vehicle part ( 2 ) about a pivot axis ( 15 ) pivotally connected to a base part, and that the sensor ( 9 ) at one to the pivot axis ( 15 ) adjacent edge region of the vehicle part ( 2 ) is arranged. Motor vehicle ( 1 ) according to one of claims 1 to 5, characterized in that the vehicle part ( 2 ) is designed as a tailgate, the one at its upper edge region with the control device ( 11 connected first, sensor ( 9 ) that below the tailgate, preferably at least one of the control device ( 11 ) connected second sensor ( 9 ' ), and that the control device ( 11 ) in such a way with the actuating device ( 3 ) is in control connection that the adjustment movement of the tailgate is locked, continued with reduced speed and force, stopped or reversed, if - the first sensor ( 9 ) detects an obstacle and the tailgate is located in an upper portion of its movement space and / or - the second sensor ( 9 ' ) detects an obstacle and the tailgate is located in a lower portion of their range of motion. Motor vehicle ( 1 ) according to one of claims 1 to 6, characterized in that vehicle part ( 2 ) which has a door handle ( 16 ), and that the sensor ( 9 ) on the door handle ( 16 ) and / or behind the door handle ( 16 ) located recessed grip is arranged. Motor vehicle ( 1 ) according to one of claims 1 to 7, characterized in that the main extension plane ( 17 ) of the detection area ( 10 ) of the sensor ( 9 ) opposite the main extension plane ( 18 ) of the vehicle part ( 2 ) is tilted such that starting from the sensor ( 9 ) in the detection direction ( 19 ) with increasing distance from the sensor ( 9 ) the distance between said main planes of extension ( 17 . 18 ) increases. Motor vehicle ( 1 ) according to one of claims 1 to 8, characterized in that the sensor ( 9 ) is designed as a distance sensor, preferably as an ultrasonic sensor, radar sensor and / or infrared sensor. Motor vehicle ( 1 ) according to one of claims 1 to 9, characterized in that the actuating device ( 3 ) a braking device for stopping the adjustment movement of the vehicle part ( 2 ), that the braking device from a rest state in a standby state is woken up that the at least one sensor ( 9 ) has a first detection area and a second detection area further from the vehicle part ( 2 ) is spaced as the first detection area that the at least one sensor ( 9 ) Means for detecting the course of movement of an obstacle located in the second detection area, that the control device ( 11 ) Means for extrapolating the movement of the obstacle and the adjustment movement of the vehicle part ( 2 ), that the control device ( 11 ) Is designed such that the braking device is woken up when Ex trapolation of movements an expected collision between the vehicle part ( 2 ) and the obstacle, and that the control device ( 11 ) in such a way with the actuating device ( 3 ) in control connection is that the adjusting movement of the vehicle part ( 2 ) is continued, stopped, reversed or locked at reduced speed and force when the obstacle is detected in the first detection area.