Electromagnetic Door Lock with Clutch Mechanism for Energy Saving
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Solution Overview
Problem
Current electromagnetic door locks consume significant electrical energy and lack efficient mechanisms for detecting and responding to abnormal external forces, which is a concern for energy savings and security in security systems.
Innovation Solution
The electromagnetic door lock incorporates a clutch mechanism and linkage sensing mechanism that switches between low and high current power modes based on external forces, using a power switch button and compression springs to control the power supply, allowing for energy-saving and force detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electromagnet is continuously powered to maintain locking mode, then the door lock maintains reliable locking, but electrical energy consumption increases significantly
Solution Approach 1:
The patent implements periodic action by using a control circuit that periodically monitors door lock status through sensing mechanisms (such as Hall sensors or magnetic sensors) and only activates the electromagnet when locking is required. The electromagnet operates in intermittent cycles rather than continuous operation, maintaining reliable locking while significantly reducing electrical energy consumption during normal door-closed states.
Solution Approach 2:
The patent applies self-service principle through sensing mechanisms that automatically detect door status (open/closed) and trigger the electromagnet activation without human intervention. The system monitors itself and autonomously decides when power is needed, eliminating the need for continuous manual control while ensuring reliable locking when required.
2Use of energy by moving object
If the electromagnet is powered down to save energy, then electrical energy consumption decreases, but the door lock cannot respond quickly to abnormal external forces
Solution Approach 1:
The patent implements feedback principle by incorporating sensing mechanisms (Hall sensors, magnetic sensors, or mechanical switches) that continuously or periodically monitor door status and external forces. When abnormal forces are detected, the sensing mechanism immediately sends signals to the control circuit, which rapidly reactivates the electromagnet. This closed-loop feedback system ensures quick response to external forces while allowing the electromagnet to remain powered down during normal conditions.
Solution Approach 2:
The patent applies preliminary action by pre-positioning sensing mechanisms and control circuits that are ready to detect and respond to abnormal forces. The system maintains sensors in an active state that can immediately detect force applications, and the control circuit is pre-programmed to rapidly activate the electromagnet when triggered, ensuring minimal response time without requiring continuous electromagnet power.
3Difficulty of detecting and measuring
If a sensing mechanism is added to detect external forces, then the ability to detect and respond to abnormal forces is improved, but device complexity increases
Solution Approach 1:
The patent applies universality principle by designing sensing mechanisms that serve multiple functions: detecting door open/closed status, detecting external forces, and providing feedback for energy management. Examples include Hall sensors that detect both door position and force applications, or magnetic switches that monitor both latching status and external interference. This multi-functionality reduces the need for separate dedicated sensors for each detection task, thereby limiting the increase in device complexity.
Solution Approach 2:
The patent implements merging principle by combining the sensing mechanism, control circuit, and electromagnet into an integrated assembly. The sensing mechanism is positioned to work in close proximity to the electromagnet and door components, allowing shared mounting structures and simplified wiring. The control circuit is integrated with the electromagnet driver, reducing the number of separate components and connections needed, thereby minimizing the increase in device complexity while maintaining effective external force detection.
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
This solution enables the door lock to maintain a low-energy state in normal conditions while quickly switching to high energy to resist external forces, achieving energy savings and enhanced security without continuous high power consumption.
Implementation Method 1
the compression spring assembly rebound to force the power switch button to move away from the direction of the button circuit board
Implementation Method 2
the electromagnet 11 is energized, the electromagnetic suction force will attract the adsorption iron plate 12
Data Source
AI summary
A door lock with an energy-saving device, comprising: an electromagnet assembly secured on the door frame, which has an electromagnet and a control circuit board, and an adsorption assembly secured on the door board, which has a positioning unit and an iron plate, a set of linkage sensing mechanism set on the electromagnet, and a set of clutch mechanism set on the adsorption assembly; Thereby, when close the door board into the door frame, the control circuit board supplies power to the electromagnet with the high current in the normal locking mode to attract iron plate, and then, the clutch mechanism drives the linkage sensing mechanism to act, triggering the control circuit board to supply power with low current in the power-saving lock mode to maintain the closed state of the door panel.