Hands-free Locking Mechanism for Hygienic Stall Access
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Solution Overview
Problem
Bathroom stall locking mechanisms are frequently contaminated and pose a risk of infection transmission due to their unsanitary nature, as users often do not wash their hands before touching them, and there is a lack of hand-washing facilities within stalls.
Innovation Solution
A hands-free locking mechanism utilizing sensors to trigger a motor response, which extends or retracts a bolt or similar element to lock or unlock the stall, allowing users to avoid direct contact with potentially contaminated surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a traditional manual stall latch is used, then the locking mechanism is simple and reliable, but users must touch the latch which spreads contaminants from flushed toilets to their hands
Solution Approach 1:
The patent replaces the traditional mechanical manual latch with an automated electromechanical system that uses a motor-driven bolt mechanism. The motor receives signals from sensors (proximity, motion, or weight sensors) to automatically extend or retract the locking bolt, eliminating the need for users to manually touch the latch while maintaining reliable locking functionality.
Solution Approach 2:
The locking mechanism is designed to automatically detect user presence and perform locking/unlocking actions without requiring manual intervention. The system serves itself by using sensors to detect when a user approaches or enters the stall and automatically actuating the motor to extend or retract the bolt, thereby preventing contaminant transmission while maintaining operational reliability.
2Ease of operation
If hands-free sensors are added to the locking mechanism, then user hygiene is improved, but the device complexity and cost increase
Solution Approach 1:
The patent introduces sensors as intermediary devices that detect user presence or actions and translate them into signals for the motor control system. These sensors (proximity, motion, or weight sensors) act as mediators between the user and the locking mechanism, enabling hands-free operation by automatically triggering the motor to extend or retract the bolt based on detected user conditions.
Solution Approach 2:
The system replaces manual mechanical operation with an automated electromechanical control system that uses sensors and a motor. This substitution eliminates the need for users to physically touch the latch while introducing electronic components that manage the locking function automatically based on sensor inputs.
3Extent of automation
If a motor-driven bolt mechanism is used instead of a manual latch, then hands-free operation is achieved, but the manufacturing complexity and cost increase
Solution Approach 1:
The locking mechanism is divided into distinct functional modules: sensors for detection, a motor for actuation, and a bolt mechanism for physical locking. This segmentation allows each component to be manufactured and tested independently, then assembled into the complete automated system, thereby managing manufacturing complexity while achieving the desired automation level.
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 hands-free mechanism effectively reduces the transmission of contaminants by allowing users to operate the locking mechanism without touching it, thereby minimizing the risk of infection and maintaining hygiene.
Implementation Method 1
The sensor may sense user action and may be configured to communicate information to the controller
Implementation Method 2
The controller may be configured to control the motor, wherein the motor may extend and retract the element into and out of an opening of the latching component
Data Source
AI summary
A hands-free locking mechanism includes a locking component and a latching component. The locking component comprises a protruding element, a sensor, a controller and a motor. The protruding element comprises a spring configured to allow elastic movement of the protruding element into and out of the locking component. The elastic movement allows the locking mechanism to enter an unlocked and closed state when the protruding element is brought into contact with the latching component. When in the unlocked and closed state, the sensor senses user action and the controller causes the motor to extend the protruding element into an opening of the latching component, placing the locking mechanism into a locked and closed state. When in the locked and closed state, the sensor senses further user action and the controller causes the motor to retract the protruding element, placing the locking mechanism into an unlocked and open state.