Scroll Wheel Switching Mechanism for Rapid Rotation Control
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Solution Overview
Problem
Conventional input devices with scroll wheels provide constant tactile feedback, which impedes fast rotation and is inconvenient for users who need to rapidly scroll through content.
Innovation Solution
An input device with a switching mechanism that allows users to selectively engage or disengage the scroll wheel's toothed slots, providing tactile feedback only when needed, enabling faster rotation by minimizing drag force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the scroll wheel provides constant tactile feedback through the hook part engaging with toothed slots, then the user can sense the rotation situation for precise control, but the mechanisms impede fast rotation and make it inconvenient for rapid scrolling
Solution Approach 1:
The patent applies the dynamics principle by making the engagement between the hook part and toothed slots changeable rather than fixed. The switching mechanism allows the system to dynamically transition between two states: engaged state for tactile feedback and disengaged state for fast rotation. This resolves the contradiction by making the tactile feedback mechanism adaptive to different operational requirements.
Solution Approach 2:
The patent implements periodic action through the switching mechanism that alternates between engagement and disengagement states. The user can periodically activate the tactile feedback by pressing the switching part, allowing for bursts of precise control interspersed with periods of rapid scrolling without constant mechanical resistance.
2Measurement precision
If the hook part is biased to engage with the toothed slots to provide tactile feedback, then the user can sense rotation for enlarging and shrinking operations, but the mechanical mechanism creates drag force that impedes fast rotation
Solution Approach 1:
The patent applies the extraction principle by temporarily removing the hook part from engagement with the toothed slots when fast rotation is needed. The switching mechanism allows the hook part to be disengaged from the toothed slots, extracting the tactile feedback function when it would create excessive drag force, thus enabling rapid scrolling without mechanical resistance.
Solution Approach 2:
The patent applies local quality by providing tactile feedback only in specific local conditions rather than continuously. The switching mechanism enables tactile feedback to be activated locally in time and space - only when the user needs precise rotation control for specific operations like enlarging or shrinking, rather than during all rotation operations.
3Adaptability or versatility
If a switching mechanism is added to allow selective engagement of the hook part, then the device can provide tactile feedback only when needed enabling faster rotation, but the device complexity increases
Solution Approach 1:
The patent applies the universality principle by designing the switching mechanism to serve multiple functions: it controls the engagement of the hook part with toothed slots, provides tactile feedback activation, and enables different operation modes (precise control vs. rapid scrolling). This multi-functionality justifies the added complexity by providing versatile operational capabilities in a single integrated mechanism.
Data Source
AI summary
An input device includes a wheel supporting structure, a scroll wheel, a hook part, a linking part, and a switching mechanism. The scroll wheel is rotatably supported by the wheel supporting structure, is exposed from the input device, and has a rotary shaft with a plurality of toothed slots thereon. The hook part is disposed biased on the wheel supporting structure to selectively engage with the toothed slots. The linking part is pivotally connected to the wheel supporting structure. The switching mechanism includes an abutting part and a switching part. The abutting part abuts against the linking part. The switching part is coupled to the abutting part. Therein, the switching mechanism is operable to move the abutting part through the switching part to rotate the linking part to abut against and move the hook part to disengage from the toothed slots.