Compact Input Device with Dual-Side Flexible Circuit Board
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Solution Overview
Problem
Existing input devices for electronic devices lack versatility and efficient mechanisms for providing distinct inputs, particularly in compact designs that allow for tactile recognition of inputs without visual confirmation.
Innovation Solution
The development of an input device featuring a flexible circuit board with multiple electrical switches and a frame that defines a periphery, housed within top and bottom shells which can be pressed together to actuate switches, along with a pivot mechanism and a microphone for audio input, allowing for tactile recognition of inputs and flexible design options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a compact input device design is used, then the device size is reduced, but the versatility and number of distinct inputs are limited
Solution Approach 1:
The circuit board is divided into two sides with switches distributed on each side, allowing multiple distinct inputs to be packed into a compact form factor. This segmentation enables the device to provide versatile input options without increasing overall device volume.
Solution Approach 2:
The patent utilizes the third dimension by placing switches on both sides of the circuit board rather than confining all switches to a single plane. This dimensional approach allows more switches to be accommodated within the same footprint, resolving the contradiction between compact size and input versatility.
2Adaptability or versatility
If multiple switches are incorporated to provide distinct inputs, then input versatility is improved, but the device complexity increases
Solution Approach 1:
Multiple switches are integrated onto a single circuit board, merging what would otherwise be separate components into one unified structure. This consolidation provides multiple distinct inputs while managing device complexity by consolidating components rather than adding separate assemblies.
Solution Approach 2:
The circuit board serves as a universal platform that can accommodate multiple switches with different functions. This multi-functional design allows a single component (the circuit board) to provide versatile input capabilities without proportionally increasing overall device complexity.
3Ease of operation
If a flexible circuit board is used to allow pressing action, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The circuit board's physical parameters are modified to introduce flexibility, allowing it to bend and flex during pressing operations. This parameter change enables tactile input capability while the manufacturing process controls the degree of flexibility to meet precision requirements.
Solution Approach 2:
The circuit board transitions from a rigid state to a dynamic, flexible state that can deform during operation. This dynamic characteristic allows the board to flex when shells are pressed together, improving ease of operation while the design ensures controlled flexibility for manufacturing precision.
Data Source
AI summary
A small form-factor input device operative to be coupled to an electronic device using a cable may include a circuit board; a first electrical switch disposed on a first side of the circuit board; a second electrical switch disposed on a second side of the circuit board; a frame defining a periphery, wherein the circuit board is maintained within the periphery of the frame; first and second shells that house the circuit board, the first shell placed over the first side of the circuit board, and the second shell placed over the second side of the circuit board; and at least one clip coupled to each one of the first shell and the second shell, wherein the at least one clip is operative to engage the frame.