Magnetic Haptics Control Element Driver Lever Mechanism
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Solution Overview
Problem
Existing magnetically operated control elements for haptic feedback in vehicles have limited position-dependent haptic generation due to space constraints and low long-distance magnetic effects, especially when multiple stationary magnets are required along the actuation lever's adjustment path.
Innovation Solution
Incorporating a driver lever with a permanent magnet and multiple stationary magnets arranged along the pivoting direction, allowing the first magnet to interact magnetically with the stationary magnets via the driver lever, which enhances haptic feedback by varying the magnetic interaction strength and pivoting extent through a lever mechanism, enabling more precise control of haptic feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple stationary magnets are provided along the adjustment path of the actuating lever, then position-dependent haptic feedback is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent introduces a drive lever as an intermediary component between the actuating lever and the magnets. The drive lever carries a magnet that interacts with stationary magnets to generate haptic feedback. This intermediary mechanism allows the magnet to traverse through the magnetic fields of multiple stationary magnets along the adjustment path, enabling position-dependent haptic feedback without requiring multiple magnets to be directly mounted on the actuating lever, thus reducing device complexity while maintaining haptic quality
Solution Approach 2:
The patent transitions from a direct linear arrangement of magnets along the actuating lever path to a lever-based mechanical advantage system. By using the drive lever with a magnet that pivots to interact with stationary magnets, the system creates a mechanical amplification effect where a single magnet can effectively interact with multiple magnetic fields along the adjustment path, reducing the number of physical magnets needed
2Ease of operation
If magnets are provided to generate haptic feedback, then tactile feedback is improved, but magnetic force range is limited
Solution Approach 1:
The patent employs a dynamic lever mechanism where the drive lever pivots about a pivot axis, allowing the magnet attached to it to dynamically adjust its position and orientation. This dynamic movement enables the magnet to traverse through the magnetic fields of multiple stationary magnets along the adjustment path, extending the effective magnetic force range and enhancing tactile feedback without requiring magnets with inherently larger force ranges
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design allows for improved position-dependent haptic generation with increased haptic feedback strength and flexibility, enabling more nuanced control of the actuation lever's movement, while maintaining low wear and minimizing mechanical backlash.
Implementation Method 1
the first magnet completely or partially traverses the magnetic fields of the secondary magnets to generate haptic feedback at the actuating lever
Data Source
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AI summary
The invention relates to a control element (1) having: an actuation lever (2) which is mounted so as to be pivotable about a first pivot axis (3) and which has a section (2d) directed towards the operator with respect to the first pivot axis (3), and an actuation lever section (2a) directed away from the operator; a driver lever (8) which is mounted so as to be pivotable about a driver pivot axis (13) along a pivot direction (7); a first magnet (10), preferably a permanent magnet, secured rigidly on the driver lever (8), and several stationary second magnets (9), preferably permanent magnets, which are arranged such that, during the pivoting of the driver lever (8), the first magnet (10) passes through the magnetic fields of the second magnets (9) in order to generate haptic feedback on the actuation lever (2); wherein a first operative engagement (2b, 8b) between actuation lever section (2a) and driver lever (8) is provided in order to effect a synchronous pivoting of actuation lever (2) and driver lever (8).