Sliding Protective Guard for Wall-Mounted Electrical Switches
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Solution Overview
Problem
Existing childproof devices for electrical switches and outlets often fail to balance being difficult for small children to operate while remaining easy and convenient for adults, leading to inconvenience and abandonment due to complex motions or specialized tools required for access.
Innovation Solution
A self-contained system with a sliding cover and spring-biased latch mechanism that covers electrical switches, requiring a specific sequence of rotational and linear motions to unlock, making it difficult for children but easy for adults to access with one-handed operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a childproof cap or cover is used to prevent access to the switch actuator, then child safety is improved, but the device requires removal of the cap or complex motions for adult access
Solution Approach 1:
The device is divided into a baseplate mounted on the switch and a separate sliding cover that can be independently moved. The cover slides along guide rails to reveal the switch actuator, providing child protection when closed and easy adult access when opened, without requiring cap removal or complex motions
Solution Approach 2:
The cover is designed to be dynamically movable along guide rails rather than fixed or requiring removal. A latch mechanism with spring bias provides automatic engagement when closed and easy disengagement when pulled, allowing the cover to transition between locked and unlocked states smoothly for adult convenience
2Object-affected harmful factors
If a two-handed operation or complex motion sequence is required, then child access is prevented, but adult operation becomes inconvenient and annoying
Solution Approach 1:
The latch mechanism requires only partial action - a simple pull motion that disengages the latch from the detent - rather than complex multi-step operations. The spring bias provides automatic engagement, reducing the adult operation to a single intuitive pulling motion while maintaining child resistance through the latch's mechanical advantage
3Ease of operation
If the switch is positioned high for adult access, then adult convenience is improved, but child reachability increases
Solution Approach 1:
The sliding cover acts as an intermediary barrier between the child and the switch actuator. Even when the switch is positioned high for adult access, the cover must be opened to expose the actuator, adding a protective layer that prevents direct child access while maintaining adult convenience through the simple sliding motion
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
Effectively prevents small children from accessing electrical switches while allowing adults to use them frequently without annoyance, using a combination of torsion spring resistance and gravity to create a secure yet intuitive access mechanism.
Implementation Method 1
a spring-biased latch mechanism that covers electrical switches, requiring a specific sequence of rotational and linear motions to unlock
Implementation Method 2
using a combination of torsion spring resistance and gravity to create a secure yet intuitive access mechanism
Data Source
AI summary
A protective guard prevents undesired access to a wall-mounted electrical interface such as an electrical switch or outlet, particularly by small children. The protective guard includes a baseplate, cover and spring-biased latch. The baseplate is mounted to the wall and contains at least one opening to expose the electrical interface. The cover slidably attaches to the baseplate for sliding movement between a closed position that blocks access to the electrical interface and an open position that exposes the electrical interface. The spring-biased latch is attached to the cover. The latch is actively spring-biased to a locked position that holds the cover in the closed position and has an unlocked position offset from the locked position which allows sliding movement of the cover to its open position to expose the electrical interface. Advantageously, exposing the electrical interface requires no additional parts or tools that should be procured, removed, stored, or could be misplaced. The required actions to expose the electrical interface are difficult to achieve by a small child while an adult has the required strength, motor skills, and cognitive abilities to easily and intuitively accomplish the necessary actions with a one-handed operation.