Vehicle Haptic Display Vibration Isolation for Responsive Touch Feedback
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Solution Overview
Problem
Existing haptic displays for vehicles struggle to isolate vibration generated by an oscillation actuator, allowing it to be transmitted only to the display panel while preventing it from reaching surrounding or supporting parts.
Innovation Solution
A haptic display configuration that includes a display panel, a front cover, an oscillation actuator, a main bracket, a forward/backward vibration damper, an upward/downward vibration damper, and a rear cover, where the vibration dampers effectively isolate vibration from the main bracket and surrounding parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If vibration dampers are installed between the front cover and main bracket, then vibration is isolated from surrounding parts, but device complexity increases
Solution Approach 1:
Vibration dampers are introduced as intermediary components between the front cover and main bracket to isolate vibration. The dampers act as mediators that absorb and dampen vibrational energy, preventing it from transmitting to surrounding parts while maintaining the structural connection between components.
Solution Approach 2:
The vibration dampers utilize flexible damping materials (such as rubber or elastomeric compounds) that can deform under vibrational stress. These flexible elements provide vibration isolation through their inherent damping properties, allowing the system to reduce harmful vibrations without requiring complex rigid structures.
2Speed
If vibration is transmitted only to the display panel, then responsiveness is enhanced, but vibration isolation mechanisms increase device complexity
Solution Approach 1:
The vibration isolation system is segmented into multiple directional dampers (forward/backward and upward/downward) positioned at different locations. This segmentation allows vibration to be controlled in specific directions while maintaining responsiveness in others, enabling the display panel to receive necessary vibrational feedback while isolating surrounding parts.
Solution Approach 2:
Vibration dampers are strategically positioned at specific locations where vibration transmission needs to be controlled. The dampers are placed between the front cover and main bracket at key mounting points, providing localized vibration isolation that enhances display panel responsiveness without requiring comprehensive vibration control throughout the entire structure.
3Object-affected harmful factors
If multiple vibration dampers are installed in different directions, then vibration isolation effectiveness is improved, but manufacturing complexity increases
Solution Approach 1:
The vibration damper design employs universal mounting features that can accommodate multiple directional dampers using the same attachment methodology. The dampers are designed with standardized mounting interfaces that simplify the assembly process, allowing forward/backward and upward/downward dampers to be installed using similar procedures and fastening mechanisms.
Solution Approach 2:
Multiple vibration dampers are integrated into the existing structural framework of the display assembly. The dampers are combined with the front cover and main bracket structures, utilizing existing mounting surfaces and fastening points. This merging approach allows multiple dampers to be installed without requiring separate mounting structures or complex assembly procedures.
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 configuration enhances the responsiveness of the display panel by ensuring that vibration is transmitted only to it, while reducing unnecessary vibration and noise in surrounding parts, thereby improving assemblability and user experience.
Implementation Method 1
a forward/backward vibration damper installed between the front cover and the main bracket to dampen vibration between the front cover and the main bracket in the forward/backward direction
Implementation Method 2
a damping portion that forms a layer made of only a vibration insulator material between the fixing portion and the front cover
Data Source
AI summary
A haptic display for a vehicle includes a display panel, a front cover having a front surface to which the display panel is attached, an oscillation actuator attached to the display panel, a main bracket disposed in rear of the front cover and spaced apart from the oscillation actuator and the front cover, a forward/backward vibration damper installed to enable the front cover to be supported by the main bracket in order to dampen vibration between the front cover and the main bracket, an upward/downward vibration damper installed to enable the front cover to be supported by the main bracket in a upward/downward direction in order to dampen vibration between the front cover and the main bracket, and a rear cover fixed to the main bracket while surrounding the main bracket in rear of the front cover.