Curved Mechanical Switch Array for Gloved Input
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Solution Overview
Problem
Existing operational feeling providing devices struggle to detect touch position and provide operational feedback when a user is wearing gloves, leading to difficulty in input operations and reduced tactile experience.
Innovation Solution
An operation input device featuring a one-dimensional tracing operation unit with multiple mechanical switches arranged side by side, each with a curved operation surface, allowing for easy input and feedback regardless of glove wear, and enabling precise direction and amount detection based on ON signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a capacitive touch pad is used to detect touch position, then the device can provide operational feedback through friction control, but the user cannot easily operate it when wearing gloves
Solution Approach 1:
The touchpad is divided into multiple independent mechanical switches arranged in a matrix pattern. Each switch independently detects pressure input, allowing the system to determine touch position by identifying which specific switch is activated. This segmentation enables reliable gloved hand operation since mechanical pressure detection works through gloves, while still achieving precise position detection through the coordinated output of individual switch signals.
2Measurement precision
If multiple mechanical switches are arranged in a matrix pattern, then the device can detect both row and column positions for precise touch location, but the device complexity increases
Solution Approach 1:
The patent combines multiple mechanical switches into a compact matrix arrangement where row and column detection circuits are integrated together. The switches share common row and column lines, allowing the system to detect touch position by identifying the intersection point of activated row and column signals. This merging approach achieves precise two-dimensional position detection while minimizing the overall circuit complexity and space requirements compared to using completely independent detection circuits for each switch.
Data Source
AI summary
An operation input device includes an operation input unit that is configured to receive a tracing operation performed in a one-dimensional direction. The operation input unit includes a plurality of mechanical switches that are arranged side by side in an operation direction and each include an operation surface subjected to the tracing operation, the operation surface defining a curved surface along the operation direction.