Slider Assembly Friction Feedback via Biasing Shutter
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Solution Overview
Problem
Electrical switches, such as dimmer switches, lack improved operating characteristics and ergonomics, particularly in terms of friction feedback for user satisfaction.
Innovation Solution
A slider assembly with a shutter mechanism that includes biasing members engaging interior sidewalls of the upper housing, creating a consistent friction force during slider movement, enhancing user experience through tactile feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a linear slider is made movable to control current delivery, then the dimmer switch achieves functional control capability, but the slider lacks desirable operating characteristics and ergonomics
Solution Approach 1:
The slider assembly is divided into distinct functional components: a shutter portion that interfaces with the slider mechanism, and separate biasing members distributed at different locations. This segmentation allows each component to be optimized independently for its specific function while contributing to the overall ergonomic performance.
Solution Approach 2:
The biasing members are designed to be resilient and capable of dynamic engagement with the housing interior sidewalls. This creates a dynamic friction force that adapts during slider movement, providing tactile feedback and improved operating characteristics rather than a static, lifeless connection.
2Ease of operation
If biasing members are added to create friction force, then tactile feedback and user satisfaction are improved, but the slider assembly structure becomes more complex
Solution Approach 1:
The shutter portion is merged with the biasing members to form an integrated shutter assembly. This combination eliminates the need for separate friction-generation components, as the biasing members are directly incorporated into the shutter structure that already interfaces with the slider mechanism.
Solution Approach 2:
The biasing members automatically engage with the housing interior sidewalls through their own resilient properties, generating the necessary friction force without requiring external actuation or complex control mechanisms. The system serves itself by utilizing the natural elastic recovery of the biasing members.
3Ease of operation
If friction force is increased for better user feel, then operating characteristics improve, but the slider mechanism may become harder to move
Solution Approach 1:
The friction force is not uniformly applied along the entire slider path, but is instead generated locally at specific engagement points where the biasing members contact the housing interior sidewalls. This localized friction provides tactile feedback at critical moments during operation without creating excessive resistance throughout the entire range of motion.
Solution Approach 2:
The resilient nature of the biasing members allows the friction force parameter to vary dynamically during slider movement. As the slider moves, the engagement depth and contact pressure between the biasing members and housing sidewalls change, creating a variable friction profile that provides feedback while maintaining movability.
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 solution provides a desirable 'feel' for users by ensuring a consistent and predictable friction force throughout the slider's range of motion, improving user satisfaction and operational effectiveness.
Implementation Method 1
biasing members structured to engage and apply a bias force against interior sidewalls of said upper housing
Implementation Method 2
creating a friction force associated with movement of said slider mechanism
Data Source
AI summary
A slider assembly is for an electrical switch having an upper housing. The slider assembly includes a slider mechanism structured to be disposed on an exterior surface of the upper housing and a shutter structured to be disposed in an interior of said upper housing and to be coupled to said slider mechanism. The shutter includes a number of biasing members structured to engage and apply a bias force against interior sidewalls of said upper housing, thereby creating a friction force associated with movement of said slider mechanism.