Door Lock Power via Doorbell Transformer Induction
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Solution Overview
Problem
Electronic door locks often run out of power, leading to users being inadvertently locked out of buildings, as they require constant battery maintenance and there is no efficient means to maintain power supply.
Innovation Solution
A door lock system that receives electricity from a transformer coupled to a doorbell chime, using near field energy transmission and induction to transmit power from a strike plate assembly to a face plate assembly, ensuring continuous power supply even when the lock is mounted on a swinging door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic door locks use batteries for power supply, then the lock can operate independently, but the batteries will run out of power and lock users out of buildings
Solution Approach 1:
The patent combines the doorbell system and door lock power supply into a single integrated system. The doorbell transformer provides power to both the doorbell chime and the electronic door lock through a common power circuit, eliminating the need for separate battery power sources and ensuring continuous operation.
Solution Approach 2:
The doorbell transformer serves multiple functions: it powers the doorbell chime system and simultaneously provides continuous power to the electronic door lock. This multi-functional approach eliminates the battery life limitation while maintaining independent operation capability.
2Ease of operation
If the door lock is mounted on a swinging door, then access is convenient, but maintaining power supply becomes difficult
Solution Approach 1:
The patent introduces a flexible printed circuit board as an intermediary power transmission component. This flexible circuit board can accommodate the movement of the swinging door while maintaining continuous electrical connection between the power source and the door lock, solving both the convenience and reliability requirements.
Solution Approach 2:
The patent changes the physical state of the power transmission medium from rigid wires to flexible circuits, allowing the power supply system to adapt to the dynamic movement of the swinging door while maintaining stable electrical connection.
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 system prevents users from being locked out of buildings by maintaining a consistent power supply to the door lock, allowing for remote operation and enhanced security features like camera, microphone, and communication capabilities.
Implementation Method 1
A lock is configured to receive electricity from a transformer that is electrically coupled to a doorbell chime
Implementation Method 2
using near field energy transmission and induction to transmit power from a strike plate assembly to a face plate assembly
Data Source
AI summary
A door lock system can comprise a door lock movable between a locked state and an unlocked state. The door lock system can detect a first indication suggestive of a presence of a mobile computing device of a visitor. The door lock system can also detect a second indication suggestive of an identity of the visitor. Further, the door lock system can validate that the first indication and the second indication are associated with a known identity of the visitor.