Vehicle Haptic Feedback Drive Device with Non-Contact Electromagnet
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Solution Overview
Problem
Existing motor vehicle operating devices with drive devices that utilize electromagnets for haptic feedback lack efficient designs that optimize installation space and flexibility in generating haptic feedback, often resulting in inefficient use of space and potential noise from direct contact between moving elements.
Innovation Solution
The operating device incorporates an electromagnet and a movement element arranged to maintain a predetermined distance, with an elastic and damping element in between, allowing for flexible arrangement and controlled movement of the operating element to provide haptic feedback without direct magnetic contact, and includes a spring-mounted movement element for oscillation and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the electromagnet and movement element are arranged to maintain a predetermined distance without direct contact, then noise is minimized and installation space is optimized, but the complexity of the drive device increases due to the need for intermediate elastic and damping elements
Solution Approach 1:
An elastic element and a damping element are introduced as intermediary components between the electromagnet and the movement element. The elastic element maintains the predetermined distance while allowing controlled movement, and the damping element minimizes noise by absorbing vibrations. This intermediary approach resolves the contradiction by preventing direct contact (reducing noise) while managing the increased complexity through functional integration of these elements.
Solution Approach 2:
The damping element is positioned beforehand between the electromagnet and movement element to cushion and absorb potential noise and vibrations before they can propagate. This prior cushioning approach minimizes noise generation at the source while accepting the added structural complexity as a necessary trade-off for noise control.
2Volume of moving object
If the electromagnet and movement element are arranged to maintain a predetermined distance, then installation space efficiency is improved, but the force transmission efficiency decreases due to the gap between components
Solution Approach 1:
The elastic element introduces dynamic characteristics to the system, allowing the distance between the electromagnet and movement element to vary within controlled limits. This dynamic arrangement optimizes installation space by enabling compact positioning while maintaining sufficient force transmission through the elastic coupling, resolving the contradiction between space efficiency and energy loss.
Solution Approach 2:
The predetermined distance between the electromagnet and movement element is optimized as a specific parameter to balance space efficiency and force transmission. By carefully selecting this distance parameter and combining it with the elastic and damping elements, the system achieves compact installation while minimizing energy loss through the gap.
3Productivity
If the movement element is spring-mounted to enable oscillation and vibration for haptic feedback, then the effectiveness of haptic output is improved, but the complexity of the drive mechanism increases
Solution Approach 1:
The movement element is spring-mounted to enable controlled oscillation and vibration, directly implementing mechanical vibration to generate haptic feedback. This approach improves haptic effectiveness by utilizing the natural vibrational properties of the spring-mounted element, while the complexity is managed by integrating this vibration mechanism into the existing electromagnet-driven structure.
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 enhances the efficiency of haptic feedback generation by optimizing space usage and minimizing noise, allowing for adaptable and effective haptic output through controlled movement and vibration of the operating element.
Implementation Method 1
the drive device has an electromagnet and a movement element which can be moved by the activation of the electromagnet
Data Source
Figure 1
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Figure 4
AI summary
The invention relates to an operating unit (3) for a motor vehicle (1), comprising an operating element (4), a detection device (5) for detecting an operator input performed on the operating element (4), and a drive device (6) which allows the operating element (4) to move in accordance with the operator input detected by the detection device (5) so as to output haptic feedback, said drive device (6) being provided with an electromagnet (17) and a moving element (19) that can move as the electromagnet (17) is triggered; the electromagnet (17) and the moving element (19) are arranged relative to one another in such a way that when the moving element (19) moves, a predetermined distance remains between the electromagnet (17) and the moving element (19).