Retrofit Switch Cover Assembly for Wireless Load Control
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Solution Overview
Problem
The installation of advanced load control systems in homes often requires electrical rewiring and the replacement of existing mechanical switches, which can be costly and intimidating for average consumers, and there is a need to prevent accidental disconnection of power to controllable light sources when using remote control devices.
Innovation Solution
A remote control device that can be mounted over existing mechanical switches, allowing for wireless control of electrical loads without rewiring, and ensuring that the power remains on by preventing the mechanical switch from being turned off accidentally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing mechanical switches are replaced by load control devices, then advanced control features and energy savings are achieved, but installation complexity and cost increase due to electrical rewiring requirements
Solution Approach 1:
The remote control device is nested over the existing mechanical switch, with the faceplate assembly covering the switch while the adapter plate attaches to the switch's yoke. This nesting approach allows the new control device to utilize the existing switch mounting infrastructure without requiring replacement or rewiring.
Solution Approach 2:
The adapter plate serves as an intermediary component that bridges the existing mechanical switch and the new remote control device. It attaches to the switch's yoke and provides mounting points for the faceplate assembly, enabling integration without direct electrical connection or modification of the original switch.
2Ease of operation
If wall-mounted light switch is operated to off position, then power is cut to controllable light source, but this prevents remote control operation and requires prevention mechanisms
Solution Approach 1:
The remote control device includes a mechanism that preemptively prevents the mechanical switch actuator from being moved to the off position. By physically blocking the actuator or maintaining it in the on position, the system prevents the harmful action of cutting power, thereby ensuring continuous operation for remote control functionality.
3Reliability
If mechanical switch actuator is accessible, then users can accidentally switch to off position, but restricting access reduces ease of operation
Solution Approach 1:
The faceplate assembly is nested over the mechanical switch actuator, physically covering and restricting access to it. This nested structure allows the actuator to remain functional for intentional operations while preventing accidental activation, as users must deliberately interact with the remote control interface rather than accidentally bumping the actuator.
Data Source
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AI summary
Remote control devices may control electrical loads and/or load control devices of a load control system without accessing electrical wiring. The remote control device may be mounted over a mechanical switch that is installed in a wallbox. The remote control device may include a control unit and a faceplate assembly. The faceplate assembly may include a mounting frame, an adapter plate, and a faceplate. The mounting frame may be configured to abut a bezel of the mechanical switch such that the faceplate is spaced away from the bezel of the mechanical switch to enable the mounting ring to extend through respective openings in the adapter plate and the faceplate.