Haptic Feedback System With Multi-Directional Vibration Control
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Solution Overview
Problem
Existing haptic feedback systems in electronic devices are unable to effectively realize different modes of vibration, which is a limitation as the demand for more sophisticated vibration feedback increases with the miniaturization of these devices.
Innovation Solution
A haptic feedback system comprising a fixed portion, a movable portion, a connecting assembly, and a driving assembly that allows the movable portion to move in two distinct modes of vibration by utilizing a driving force along the same driving direction, with a design that includes elastic elements, a driving magnet group, and a position sensing assembly to control the movement in a closed loop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional haptic feedback system uses a single driving direction to actuate the movable portion, then the structure is simple, but it cannot effectively realize different modes of vibration
Solution Approach 1:
The patent applies dimensionality change by designing the connecting assembly with elastic elements that have multiple segments and bending portions, allowing the system to convert a single driving direction force into movements in multiple directions (first mode direction and second mode direction). This enables different vibration modes without adding multiple driving assemblies, thus achieving versatility while controlling structural complexity.
2Volume of moving object
If the haptic feedback system is miniaturized to meet device size requirements, then the device size is reduced, but the ability to provide sophisticated vibration feedback is compromised
Solution Approach 1:
The connecting assembly with elastic elements serves multiple functions: it connects the movable portion to the fixed portion, provides mechanical compliance, and enables multiple vibration modes through its multi-segment structure with bending portions. This multi-functionality allows the miniaturized system to maintain sophisticated vibration feedback capability while reducing overall device size.
3Adaptability or versatility
If elastic elements with multiple segments and bending portions are used to enable multi-directional movement, then different vibration modes are achieved, but the manufacturing complexity increases
Solution Approach 1:
The patent employs parameter changes by adjusting the geometric parameters of the elastic elements, including the configuration of multiple segments, bending portions with specific bending angles, and connecting portions. These parameter optimizations allow the complex multi-segment structure to be manufactured using standard fabrication processes while maintaining the ability to achieve multi-directional movement and different vibration modes.
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
Enables the generation of vibrations in multiple directions, enhancing user feedback while maintaining a compact device size, and allowing for customizable vibration amplitudes and frequencies, thus meeting the higher requirements of modern electronic devices.
Implementation Method 1
a driving assembly drives the movable portion to move relative to the fixed portion by a driving force
Implementation Method 2
The connecting assembly includes an elastic element, and the first elastic element has a first segment, a second segment, a third segment, a first bending portion, a second bending portion
Data Source
AI summary
A haptic feedback system is disposed on a device, including a fixed portion, a movable portion, a connecting assembly, and a driving assembly. The fixed portion fixedly connects the device. The movable portion is movable along a first mode direction and a second mode direction relative to the fixed portion. The movable portion is movably connected to the fixed portion via the connecting assembly. The driving assembly drives the movable portion to move relative to the fixed portion by a driving force, wherein a driving direction of the driving force is different from the first mode direction and the second mode direction.