Force-Sensing Apparatus with Acute-Angle Displacement Portion
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Solution Overview
Problem
Conventional mechanical buttons in portable electronic devices are not suitable for waterproof and dustproof designs, necessitating the development of a force-sensing apparatus that can effectively detect external pressure for input purposes while maintaining design and performance improvements.
Innovation Solution
A force-sensing apparatus comprising a planar-shaped frame with a force sensor and a displacement portion, where the displacement portion is connected at an acute angle and resiliently deformed to amplify the distance change detected by the force sensor, enhancing sensing sensitivity and ease of assembly within a mobile device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional mechanical button is used, then input functionality is provided, but waterproofing and dustproofing are compromised
Solution Approach 1:
The patent replaces the conventional mechanical button structure with a force-sensing apparatus that detects pressure through sensor elements (such as capacitive, resistive, or piezoelectric sensors). This substitution eliminates the need for mechanical moving parts that compromise sealing, while maintaining input functionality through electronic detection of applied force on the waterproof surface.
2Ease of manufacture
If the displacement portion is connected at an acute angle to the frame, then assembly ease is improved, but structural complexity increases
Solution Approach 1:
The displacement portion is designed with an acute angle connection to the frame, allowing it to flex and deform dynamically in response to applied pressure. This angular connection creates a lever arm effect that amplifies displacement at the sensing surface, improving sensitivity while maintaining a relatively simple single-piece structure that is easy to manufacture and assemble.
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
The force-sensing apparatus effectively detects external pressure by amplifying the distance change, improving sensing sensitivity and facilitating assembly within electronic devices, thereby addressing the limitations of conventional mechanical buttons in waterproof and dustproof designs.
Implementation Method 1
The displacement portion may be resiliently deformed by external pressure
Implementation Method 2
The frame and the force sensor may be bowed and deformed by pressure applied externally
Data Source
AI summary
An electronic device includes a force-sensing apparatus. The force-sensing apparatus includes a planar-shaped frame, a force sensor, and a displacement portion. The force sensor is disposed on one surface of the frame. The displacement portion has a planar profile and one side coupled at an acute angle to the frame and another side freely disposed above a sensing surface of the force sensor.