Motor Vehicle Door Positioning for External Force Hold Control
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Solution Overview
Problem
Existing positioning devices for motor vehicle doors struggle to control external forces effectively, leading to uncontrolled opening, especially when parked on slopes, which can cause damage or accidents.
Innovation Solution
A control unit compares a time-dependent force curve with actual forces measured by a sensor to determine external forces, activating a movement element to hold or release the door independently, using an integrated electric motor drive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a positioning device is used to open the motor vehicle door, then the door can be opened on demand, but external forces such as wind or gravity on slopes cannot be controlled, leading to uncontrolled opening
Solution Approach 1:
The control unit compares a time-dependent force curve with actual forces measured by the sensor before the door is fully opened, and activates the movement element to hold or release the door independently based on this preliminary comparison, preventing uncontrolled opening before it occurs
Solution Approach 2:
A sensor measures actual forces engaging on the positioning element and feeds this information to the control unit, which compares the measured force with a time-dependent force curve and adjusts the movement element accordingly to maintain controlled door positioning despite external forces
2Stability of the object's composition
If the positioning device is activated to hold the door open, then the door remains in position, but external forces may cause uncontrolled opening that can cause damage or accidents
Solution Approach 1:
The control unit proactively compares the measured force with the time-dependent force curve and activates the movement element to counteract external forces before they can cause uncontrolled opening, preventing damage and accidents by maintaining controlled door positioning
Data Source
AI summary
A positioning device for a motor vehicle door, which is provided in its basic design with an electric motor drive for a positioning element, furthermore with at least one sensor assigned to the positioning element, and with a movement element optionally securing or releasing the positioning element (1, 2) and/or the motor vehicle door. The sensor is capable at least of measuring a force engaging on the positioning element. According to the invention, the movement element can be acted upon at least independently of the operator in accordance with signals from the sensor.