Light Switch Adapter With Screw-Mounted Smart Retrofit
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Solution Overview
Problem
Existing smart switch adapters are aesthetically unappealing, require skilled installation, and lack robustness and advanced functionality, as they are often bulky and rely on magnets for attachment, which can be easily removed, and have limited smart capabilities.
Innovation Solution
A light switch adapter that uses elongated screws for secure attachment without removing existing switches, incorporates a low-profile mechanical actuator controlled by a microcontroller, includes proximity and IR sensors for touchless operation, and features smart functionality with IR learning capabilities and secure audio-based pairing, allowing for universal remote control and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If magnets are used to attach the adapter to the light switch, then installation is simple and rapid, but the adapter can be easily knocked off or removed
Solution Approach 1:
The attachment mechanism is divided into two parts: elongated screws that thread into the light switch housing and an adapter body that couples to the screws. This segmentation allows the screws to provide secure anchoring while the adapter body maintains simple installation through a tool-free coupling mechanism.
Solution Approach 2:
Instead of attaching the adapter to the switch face as in prior art, the attachment mechanism is inverted to engage with the rear housing of the switch through elongated screws. This reversal provides structural security while maintaining installation simplicity through the coupling design.
2Device complexity
If traditional mechanical switching mechanisms are used, then the adapter structure is simple, but the switch malfunctions due to excessive use over time
Solution Approach 1:
The patent replaces traditional mechanical switching mechanisms with an optical sensing system using infra-red sensors to detect switch state and a microcontroller to control the actuator. This substitution eliminates mechanical wear while maintaining the essential switching function through non-contact optical detection.
3Reliability
If a bulky internal switching mechanism is used, then the switch functionality is robust, but the device thickness increases making it aesthetically unappealing
Solution Approach 1:
The patent replaces bulky mechanical switching components with compact optical sensors and a microcontroller that can be mounted on a circuit board. This substitution dramatically reduces the thickness requirement while maintaining robust switching functionality through electronic control and optical sensing.
Solution Approach 2:
The patent transitions from three-dimensional mechanical switching components to two-dimensional circuit board mounting for sensors and electronics. This dimensional change allows the switching mechanism to be flattened into a thin profile while maintaining full functionality through planar integration of components.
4Ease of operation
If existing screws are used to attach the adapter, then the installation is simple, but the attachment is not secure enough
Solution Approach 1:
The attachment system is segmented into elongated screws that provide structural strength by threading into the switch housing, and a coupling mechanism that provides simple installation. The screws extend beyond the switch face to engage with the adapter body, distributing mechanical load while maintaining ease of installation through the coupling design.
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 adapter provides a secure, aesthetically pleasing, and efficient solution for upgrading traditional light switches to smart switches with enhanced functionality, including touchless operation, reduced risk of removal, and advanced control capabilities, while minimizing energy waste and ensuring secure device pairing.
Implementation Method 1
The inclusion of a proximity sensor enables the switch to be operated without physically touching the surface of the adapter.
Implementation Method 2
The adapter uses infra-red sensors to determine the on/off state of the switch
Implementation Method 3
The adapter uses audible sound for transferring pairing data messages between devices with a speaker and/or a microphone.
Data Source
AI summary
A light switch adapter with slight modification to an existing wall light switch turns the existing wall light switch into a smart device by replacing the existing screws with elongated screws. To further secure the adaptation, each of the elongated screw may contain an adapter screw head or fastener or knobbed protrusion that firmly couples the light switch adapter through an opening of the rear side of the light switch adapter. In another embodiment, the opening contains or shaped as a circlip or a C-clip that allows the adapter screw head snap into the opening securely.