Multi-mode Roller with Motor-Driven Pivot Arm for Scroll Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional rollers in control devices, such as mice, provide limited options for fast multi-page scrolling, requiring multiple manipulations and placing strain on users' fingers, hands, and wrists, as they lack efficient mechanisms for ratcheted and smooth scrolling.
Innovation Solution
A multi-mode roller with a selectable smooth-roller mode and ratchet-roller mode, featuring a metal roller wheel with a corrugated surface and a pivot arm driven by a DC motor, allowing for ratcheted scrolling and continuous rotation without user force, reducing the need for repeated pushing and minimizing user strain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional rollers are used for scrolling, then basic scrolling function is provided, but multiple manipulations are required and user strain increases
Solution Approach 1:
The roller wheel transitions from a static friction-based mechanism to a dynamic motor-driven system. The motor activates based on rotation speed detection, transforming the roller from purely manual operation to an adaptive system that provides motor assistance during fast scrolling while maintaining manual control during precise positioning.
Solution Approach 2:
The system changes the operational parameters of the roller by detecting rotation speed and switching between two operational modes: manual friction-based scrolling for precise control and motor-driven accelerated scrolling for fast navigation. This parameter-based switching resolves the contradiction between ease of operation and scrolling speed.
2Productivity
If accelerated scrolling is provided via fast roller rotation detection, then fast multi-page scrolling is achieved, but the roller requires continuous user pushing
Solution Approach 1:
The roller wheel enters a self-sustaining rotation mode where the motor continues to drive the wheel after the user releases it. The motor detects that the wheel is rotating above the threshold speed and maintains this rotation without requiring continuous user input, allowing the wheel to coast through multiple pages automatically.
Solution Approach 2:
The motor performs preliminary action by accelerating the roller wheel to high speed before the user releases it. This preliminary acceleration creates momentum that allows the wheel to continue rotating at high speed without further user input, reducing the frequency of user pushes required.
3Measurement precision
If multiple manipulations are required for multi-page scrolling, then precise control is maintained, but time consumption increases
Solution Approach 1:
The system uses periodic action in two ways: (1) The motor activates in periodic bursts to maintain rotation during fast scrolling, and (2) the user alternates between manual precise positioning and motor-driven fast scrolling. This periodic switching between modes allows efficient time management while maintaining precision when needed.
Solution Approach 2:
The system dynamically adapts between precise manual control and fast motor-driven scrolling based on user needs. The motor provides accelerated scrolling for rapid navigation through multiple pages, reducing time loss, while manual control remains available for precise positioning, maintaining measurement precision.
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 multi-mode roller significantly reduces the number of times a user must push the roller to scroll, minimizing user fatigue and allowing for seamless document navigation, as the roller continues to rotate after initial push, providing both precise ratcheted and smooth scrolling experiences.
Implementation Method 1
energy driven means configured to pivot the pivot arm
Implementation Method 2
a pivot arm configured to pivot in a first direction to contact the corrugated surface
Implementation Method 3
the roller wheel is configured to continue rotating subsequent to a user pushing force being applied to the roller wheel
Data Source
AI summary
A roller for a control device includes a roller wheel having an outer portion formed of metal and a corrugated surface; a pivot arm configured to pivot in a first direction to contact the corrugated surface and to pivot in a second direction to move away from the corrugated surface; and energy driven means configured to pivot the pivot arm.