Door Lock Power via Doorbell 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 batteries and lack a reliable means to maintain electricity 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 the lock, ensuring continuous operation even when batteries are depleted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electronic door locks use batteries to power the lock mechanism, then the lock can operate independently without wired power supply, but the batteries will eventually run out of power causing users to be locked out
Solution Approach 1:
The patent introduces a transformer as an intermediary device that converts AC power from the building's electrical system into DC power suitable for the electronic door lock. This mediator enables the lock to receive continuous power without requiring replaceable batteries, thus maintaining independent operation while ensuring reliable power supply. The transformer is installed in the doorbell assembly, creating a power transmission path from the building's electrical system through the doorbell to the lock.
2Reliability
If wired power supply is connected directly to the door lock, then continuous power is available, but the installation becomes more complex and requires electrical wiring through the door
Solution Approach 1:
The patent combines the transformer, doorbell mechanism, and power transmission components into a single integrated assembly. By merging these functions into the existing doorbell structure, the system provides continuous power to the lock without requiring separate wiring installations. The transformer is housed within the doorbell assembly, and power is transmitted through the same mounting structure, thereby simplifying installation while ensuring reliable power supply.
3Reliability
If the lock is mounted on a swinging door, then access control is effective, but transmitting electricity from the building to the lock becomes difficult due to door movement
Solution Approach 1:
The patent uses the doorbell assembly as an intermediary structure to bridge the power transmission gap created by door movement. The transformer is mounted on the door frame (stationary), while the lock is mounted on the swinging door. Power is transmitted through the doorbell mechanism which remains stationary, thereby eliminating the problem of transmitting electricity through moving parts. This mediator approach allows the lock to maintain continuous power supply despite door movement.
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 power to the door lock through electrical induction from the doorbell chime, ensuring reliable access and reducing battery-related lockouts.
Implementation Method 1
the doorbell can provide electricity to the door lock via various connection systems and methods... The electricity can be transmitted via electrical induction
Implementation Method 2
Several embodiments include near field energy transmission and/or near field communication. The electricity can be transmitted via electrical induction. Direct induction and magnetic induction can be used to transmit electricity from the strike plate assembly to the lock.
Data Source
AI summary
A lock can receive electricity from a transformer of a doorbell chime while the lock is mounted on a door. The lock can be electrically coupled to the face plate. The face plate can be electrically coupled to the strike plate of the door frame. The strike plate of the doorframe can be electrically coupled to the transformer of the doorbell chime.