Power Pack Vibration Counterweight for Haptic Feedback
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Solution Overview
Problem
Existing portable electronic devices face challenges in providing effective haptic feedback and vibration mechanisms, as traditional methods like loosely mounted display screens can lead to contamination risks and reduced durability in drop tests, while also occupying unnecessary space with separate counterweights.
Innovation Solution
The power pack within the portable electronic device is utilized as a vibration counterweight, with actuators, such as piezoelectric or electromagnets, moving the power pack relative to the housing to generate vibrations, thereby eliminating the need for a separate counterweight and maintaining a sealed, firmly mounted display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display screen is loosely mounted to allow vibration, then haptic feedback capability is improved, but contamination risk and durability are worsened
Solution Approach 1:
The patent combines the counterweight function with the power pack by positioning the power pack adjacent to the display screen assembly. This merging eliminates the need for a separate counterweight component while using the power pack's mass to provide the necessary counterbalancing force for haptic feedback, thereby maintaining device sealing and durability.
Solution Approach 2:
The power pack serves multiple functions: it provides power storage and simultaneously acts as a vibration counterweight for haptic feedback. This multi-functionality reduces the number of components needed and maintains the display screen's fixed mounting, preserving device sealing and contamination protection.
2Ease of operation
If a separate counterweight is added for vibration, then haptic feedback is improved, but device weight and volume are increased
Solution Approach 1:
The patent merges the counterweight function with the power pack by positioning the power pack adjacent to the display screen assembly. This eliminates the need for a separate counterweight component, thereby reducing overall device weight and volume while maintaining haptic feedback capability.
Solution Approach 2:
The power pack serves dual purposes: power storage and vibration counterweight. This multi-functionality allows the device to achieve haptic feedback without adding extra weight or volume from dedicated counterweight components.
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 solution enhances the durability and sealing of the device during impacts, reduces contamination risks, and efficiently utilizes the power pack's mass as a counterweight, providing effective haptic feedback without adding extra weight or space, while maintaining strong performance in drop tests.
Implementation Method 1
piezo actuators are mounted on an underside of a display screen to vibrate the display screen
Implementation Method 2
actuators, such as piezoelectric or electromagnets, moving the power pack relative to the housing
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A portable electronic device includes: a housing, a power pack received in the housing, and an actuator disposed between the power pack and a component of the portable electronic device, the component being in a fixed position relative to the housing, wherein the actuator imparts a force on the power pack to move the power pack relative to the housing.