Electronic Lock Telescopic Body Control Method

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Solution Overview

Problem

Existing electronic locks for industrial cabinets face reliability issues due to unstable motor operation and high power consumption, leading to potential safety risks and failure in automatic unlocking functions when the electronic control system fails.

Innovation Solution

A control method and electronic lock design utilizing an electromagnet with a telescopic body and a permanent magnet to automatically unlock the lock body, ensuring reliable operation and low power consumption by using the electromagnet and permanent magnet to control the lock's state, preventing illegal unlocking and allowing for automatic unlocking during electronic failures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a motor is used to drive the slider in the electronic lock, then the lock can achieve automatic unlocking function, but the motor cannot operate stably and reliably, resulting in high power consumption and potential safety risks

Engineering Contradiction:
Improveautomatic unlocking functionVSAvoidmotor operation stability
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The patent replaces the motor-driven mechanical system with a magnetic field-based system. The electromagnet generates a magnetic field to directly drive the telescopic body, eliminating the need for a motor, slider, and photoelectric sensor switches. This substitution resolves the reliability issues of motor operation while maintaining the automatic unlocking function through electrical control of the magnetic field.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the unstable motor component from the system. By eliminating the motor and its associated mechanical transmission components (slider, photoelectric sensors), the invention achieves a more reliable system that maintains automatic unlocking capability through a simpler electromagnet-based mechanism with fewer failure points.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If the electromagnet is continuously powered to maintain the locked state, then the lock remains secure, but the power consumption is high

Engineering Contradiction:
Improvelocking state maintenanceVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action by using a spring-loaded telescopic body that is pre-loaded in the extended (locked) position. The spring stores potential energy that automatically maintains the locking state without requiring continuous electrical power. The electromagnet only needs to be activated momentarily to retract the telescopic body for unlocking, dramatically reducing power consumption while maintaining reliable locking.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system transitions from continuous periodic action (constant electromagnet power) to intermittent periodic action (momentary electromagnet activation only when unlocking is needed). The spring mechanism provides continuous mechanical force to maintain the locked state, while the electromagnet provides periodic magnetic force only during the unlocking operation, reducing overall energy consumption.

Inventive Principle:
Principle #19Periodic action

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 solution provides a simple and reliable electronic lock structure that ensures automatic unlocking and prevents illegal unlocking, while reducing power consumption, enhancing safety and applicability in industrial settings.

Implementation Method 1

the permanent magnet located in the lock body absorbs the telescopic body/the block in the retracted state

Methodology Applied
Scientific EffectMagnetic absorption: Magnetism

Implementation Method 2

When the electromagnetic coil is energized in the forward direction, the telescopic body can be driven to retract... When the electromagnetic coil is energized in the reverse direction, the telescopic body is driven or driven jointly with the force applying structure to perform extension movements

Methodology Applied
Scientific EffectElectromagnetic force: Electromagnet

Data Source

PatentUS11859409B2Control method of electronic lock and electronic lock based on the same
Publication Date: 2024.01.02 WENZHOU YEEKA LOCK TECH CO LTD
  • US11859409B2 patent drawing
  • US11859409B2 patent drawing
  • US11859409B2 patent drawing

AI summary

Disclosed are a control method for an electronic lock and an electronic lock based on the control method. The electronic lock has a simple structure, and jointly control a snap hole on the handle with a telescopic body of the electromagnet located on the lock body base and a push rod controlled by the unlock mechanism. The telescopic body of the electromagnet has the characteristics of self-holding function when power off through the first permanent magnet, which not only the hidden danger of illegal unlocking through mechanical structure is solved, but also the power consumption of electronic lock in preventing illegal lock opening can be greatly reduced. The market's technical requirements for electronic locks can be met, and high promotion value can be obtained.