Multi-mode Roller with Corrugated Metal Wheel and Pivot Arm
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Solution Overview
Problem
Traditional control devices, such as mice, lack efficient mechanisms for fast multi-page scrolling, requiring multiple manipulations and not providing adequate options for ratcheted and smooth scrolling.
Innovation Solution
A multi-mode roller for control devices with a selectable smooth-roller mode and a ratchet-roller mode, featuring a metal roller wheel with a corrugated surface and a pivot arm that can be switched between contact and non-contact positions using a cam and slider mechanism, allowing for ratcheted scrolling and continuous rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional rollers are used for scrolling, then the device structure remains simple, but the scrolling efficiency and user experience deteriorate due to limited options for fast multi-page scrolling
Solution Approach 1:
The roller wheel is designed to dynamically switch between two operational modes: ratcheted mode where the pivot arm contacts the corrugated surface to prevent backward rotation, and smooth mode where the pivot arm is disengaged to allow continuous rotation. This dynamic reconfiguration enables the same hardware to deliver both precise step-by-step scrolling and fast continuous scrolling, resolving the contradiction between scrolling efficiency and structural simplicity
Solution Approach 2:
The roller wheel integrates multiple functions into a single component by incorporating both ratcheted and smooth scrolling capabilities. The pivot arm mechanism serves dual purposes: it provides ratcheted engagement for precise control when needed, and can be disengaged to enable smooth continuous rotation for fast scrolling. This multi-functionality eliminates the need for separate mechanisms for different scrolling modes, maintaining structural simplicity while enhancing productivity
2Measurement precision
If ratcheted scrolling is implemented for precise control, then the precision of scrolling is improved, but the speed of scrolling deteriorates due to the mechanical engagement limiting continuous rotation
Solution Approach 1:
The system dynamically transitions between ratcheted and smooth modes based on user needs. The pivot arm can be positioned to engage the corrugated surface for precise ratcheted scrolling, or disengaged to allow the roller wheel to rotate continuously at higher speeds. This dynamic switching resolves the contradiction by allowing the system to operate at high precision when needed and at high speed when precision is less critical
3Speed
If smooth scrolling is implemented for fast rotation, then the scrolling speed is improved, but the precision of control deteriorates due to the lack of mechanical engagement
Solution Approach 1:
The roller wheel allows smooth continuous rotation for fast scrolling when the pivot arm is disengaged from the corrugated surface. When precision control is needed, the pivot arm engages to provide ratcheted movement. This dynamic capability allows the system to achieve high scrolling speeds when precision is less critical, while maintaining the option for precise control when needed
4Adaptability or versatility
If multiple manipulation methods are provided for multi-page scrolling, then the versatility of the device is improved, but the ease of operation deteriorates due to requiring multiple different actions
Solution Approach 1:
The roller wheel provides multiple scrolling modes (ratcheted and smooth) through a single unified mechanism. Users can switch between modes using one slider control, eliminating the need to learn and execute multiple different manipulation methods. This universal design maintains ease of operation while providing versatility, as both functions are accessed through the same interface rather than requiring separate controls
Data Source
AI summary
A roller for a mouse 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 user operable device configured to be translated to pivot the pivot arm.