Rotary Wheel Module Integrated into PCB for Thin Remote Control Input
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Solution Overview
Problem
Existing input devices with rotary wheels for electronic apparatuses, such as remote controls, face challenges in achieving a thin form factor due to the stacking of components, which limits their thickness to more than 5 mm.
Innovation Solution
The input device integrates a rotary wheel module into the printed circuit board, using a mechanical lever switch and metal domes to generate signals, allowing for a thickness of less than 5 mm by eliminating the need for component stacking and minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If components are stacked onto each other in conventional designs, then the device structure is simple to assemble, but the thickness increases to more than 5 mm
Solution Approach 1:
The rotary wheel module is merged with the printed circuit board by integrating it into an opening of the PCB, combining what were previously separate stacked components into a single planar structure, thereby reducing thickness while managing complexity through functional integration
Solution Approach 2:
The design transitions from a three-dimensional stacked arrangement to a two-dimensional planar integration by placing the rotary wheel module within the opening of the printed circuit board, effectively utilizing the PCB's surface area to achieve thickness reduction
2Use of energy by moving object
If a mechanical lever switch and metal domes are used to generate signals, then power consumption is reduced, but the device complexity increases
Solution Approach 1:
The mechanical lever switch and metal domes are designed to generate signals passively through mechanical actuation by the rotary wheel, eliminating the need for continuous power supply to sensing elements, thereby achieving self-powered operation for signal generation
Solution Approach 2:
The design replaces electronic sensing mechanisms that require continuous power with a mechanical signal generation system using a lever switch and metal domes, substituting electronic power-dependent components with passive mechanical 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 design enables the creation of extremely thin input devices, reducing power consumption and production costs while maintaining reliable operation and user-friendly navigation controls.
Implementation Method 1
The signal generator may for example comprise a switch that closes or opens an electrical circuit
Implementation Method 2
using a mechanical lever switch and metal domes to generate signals
Data Source
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AI summary
The invention relates to an input device (1) for an electronic apparatus, particularly for a remote-control. The input device (1) comprises a printed circuit board (200) with an opening (201) in which a rotary wheel module (100) is mounted. The design allows to realize the input device (1) with small thickness.