Electronic Deadbolt Lock Status Detection via Screw Rotation Feedback
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Solution Overview
Problem
Motorized deadbolts often make it difficult to determine if the door is locked without attempting to open it, potentially leading to unauthorized access if the user believes the door is secured when it is not.
Innovation Solution
An electronic deadbolt system with a motor, lead screw, gear set, and circuit board that includes sensors to detect the rotation of the lead screw, providing visual and electronic confirmation of the lock status, and a compact design that simplifies installation and limits user access to critical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If motorized deadbolt is used, then convenience of operation is improved, but ability to detect locking status is worsened
Solution Approach 1:
The patent implements feedback mechanisms including LEDs that visually indicate lock status (green for locked, red for unlocked) and audible beeps that confirm locking actions. The system continuously monitors the deadbolt position and provides real-time feedback to the user, resolving the contradiction by making the locking status detectable while maintaining motorized operation convenience.
Solution Approach 2:
The patent replaces mechanical key-based locking with an electric motor-driven deadbolt system. This substitution enables electronic status detection through sensors and visual indicators, solving the detection problem while maintaining operational convenience through electronic controls and remote operation capabilities.
2Ease of manufacture
If compact housing design is used, then ease of installation is improved, but space for components is worsened
Solution Approach 1:
The patent employs nested component arrangement where the circuit board is positioned within the housing and components are arranged in a compact, space-efficient manner. The lead screw mechanism is integrated within the housing volume, and the circuit board routes are optimized to fit within the compact form factor, allowing easy installation while accommodating all necessary components.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement of components within the housing, routing circuit board traces in multiple layers and positioning components to optimize space utilization. The circuit board itself is configured with portions extending in different dimensions to connect components efficiently within the compact volume.
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
Ensures accurate locking status indication and easy installation, enhancing security by providing clear confirmation of the lock's engagement and reducing the risk of unauthorized access.
Implementation Method 1
a lead screw having a lead screw axis, wherein the lead screw is rotatably mounted in the housing; a deadbolt configured to be linearly extended from the housing based on a rotation of the lead screw
Implementation Method 2
a motor having a motor shaft having a motor shaft axis, wherein the motor is disposed in the housing
Data Source
AI summary
A motor with a shaft and a shaft axis is disposed within a housing. A lead screw has an axis and is rotatably mounted in the housing. A deadbolt linearly extends from the housing based on rotation of the lead screw. A gear set with a plurality of gears, each having an axis, is disposed in the housing and operably connects the motor and the lead screw. A circuit board is disposed within the housing and has a plurality of portions communicatively connected by a ribbon. Each portion is disposed substantially orthogonal to the motor shaft axis, the lead screw axis, and the plurality of gear axes.