Display Mount Cam Rail for Tolerance-Free Rotation
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Solution Overview
Problem
Existing rotational mounting systems for display devices face challenges in achieving a precise fit between rail segments and rollers, leading to looseness or difficulty in rotation due to manufacturing tolerances, which complicates the adjustment process and increases manufacturing costs and defect rates.
Innovation Solution
A rotational mounting system that integrates a cam and follower system, where one or more rail segments are configured as a cam and corresponding rollers are spring-biased followers, pre-loading the rollers against the rail segments during manufacturing and maintaining contact during use, thereby avoiding separate spring mechanisms and manufacturing variability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional rail and roller systems are used without cam integration, then the structure is simpler, but manufacturing tolerances cause looseness or rotation difficulty
Solution Approach 1:
The patent merges the cam mechanism with the rail segment by integrating the cam profile directly into the rail geometry. This combination eliminates the need for separate cam and rail components, achieving precise roller positioning while reducing overall structural complexity. The cam-rail integration ensures that manufacturing tolerances are minimized through a unified design approach.
2Reliability
If separate spring mechanisms are used to maintain roller contact with rails, then contact is maintained, but part count and manufacturing complexity increase
Solution Approach 1:
The spring mechanism is integrated into the follower assembly rather than being a separate component. The follower is designed to automatically maintain contact with the cam-rail segment through its inherent spring-loaded structure, eliminating the need for additional adjustment mechanisms or separate contact-maintenance devices. This self-service approach ensures reliable contact while minimizing part count.
3Manufacturing precision
If manufacturing tolerances are tightly controlled to achieve precise fit, then fit quality improves, but manufacturing cost and defect rates increase
Solution Approach 1:
The patent changes the geometric parameters of the rail segment by incorporating a cam profile, which transforms the interaction mechanism between rail and roller. This parameter change allows for a functional fit that compensates for manufacturing tolerances, achieving precise positioning without requiring extremely tight tolerance control. The cam geometry provides built-in adjustment capability that accommodates normal manufacturing variations.
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
This solution ensures a secure and accurate fit between rollers and rail segments, reducing looseness and manufacturing complexity, while lowering part counts and costs, and enhancing user experience by allowing smooth rotational adjustments.
Implementation Method 1
a roller for the cam rail segment being a follower and being coupled with a spring configured to bias the follower toward the cam rail segment
Data Source
AI summary
Examples are disclosed that relate to the rotational mounting of a display device to another supporting structure, such as a stand or a wall. One example provides a system comprising a display device, a support structure configured to be mounted to another structure to thereby support the display device on the other structure, and a mechanical interface rotationally connecting the display device and the support structure. The mechanical interface comprises three or more rail segments including a cam rail segment comprising a cam, and for each rail segment, one or more corresponding rollers, a roller for the cam rail segment being a follower and being coupled with a spring configured to bias the follower toward the cam rail segment.