Magnetic Door Lock Assembly for Quiet, Simplified Locking

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional door locks have numerous components, leading to inconvenient fabrication, high manufacturing costs, and noise issues during the locking process due to deadbolt collisions.

Innovation Solution

A magnetic door lock system with a slidable deadbolt and a simplified housing structure, utilizing a magnetically attracted retaining slidable sleeve and a driving member for smooth operation, reducing components and noise, and incorporating a muffler member for sound absorption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional door locks use multiple components to achieve locking function, then the locking reliability is improved, but the device complexity increases and manufacturing cost increases

Engineering Contradiction:

Improvelocking reliabilityVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the deadbolt and magnet into a single integrated component assembly. The magnet is embedded within the deadbolt structure, allowing the locking function to be achieved with fewer separate parts while maintaining reliability through the unified design of the deadbolt-magnet assembly.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The deadbolt serves multiple functions: it provides the mechanical locking action and houses the magnet for magnetic attraction. This multi-functionality reduces the need for separate components, simplifying the overall device while maintaining locking reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If conventional door locks use multiple components for locking mechanism, then the locking function is achieved, but the manufacturing cost increases

Engineering Contradiction:

Improvelocking functionVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

By integrating the magnet into the deadbolt structure, the patent reduces the total number of parts that need to be manufactured and assembled. This integration simplifies the manufacturing process and reduces costs while maintaining the locking function through the combined deadbolt-magnet assembly.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If deadbolt moves through conventional locking mechanism, then locking action is achieved, but noise is generated due to collision

Engineering Contradiction:

Improvelocking actionVSAvoidnoise

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The magnet acts as an intermediary that enables smooth, collision-free movement of the deadbolt. Through magnetic attraction, the deadbolt is gently pulled into the locked position without hard collisions, thereby reducing noise while maintaining reliable locking action.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces direct mechanical collision-based locking with a magnetic field-based approach. The magnet provides a non-contact force that guides and secures the deadbolt in position, eliminating the noisy mechanical collisions that occur in conventional systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Ease of manufacture

If simplified housing structure is used, then ease of manufacture is improved, but structural strength may be compromised

Engineering Contradiction:

Improveease of assemblyVSAvoidstructural strength

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The housing is divided into modular sections that can be easily assembled together. This segmentation allows for simplified manufacturing and assembly processes while maintaining sufficient structural strength through proper joint design and material selection in each segment.

Inventive Principle:

Principle #1Segmentation

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 cost-effective, quiet, and easy-to-assemble door lock system with reduced noise and improved manufacturing efficiency, utilizing magnetic attraction for secure locking and unlocking mechanisms.

Implementation Method 1

The magnet of the door frame lock kit is magnetically attracted to the magnet of the deadbolt to urge the retaining slidable sleeve of the deadbolt to slide into the front receiving slot in the locking position

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentUS20250243693A1Door lock kit, door frame lock kit, and magnetic door lock with the same

Publication Date: 2025.07.31 FIBRE IND CO LTD

AI summary

A magnetic door lock includes a door lock kit and a door frame lock kit. The door lock kit includes a deadbolt having a retaining slidable sleeve disposed in a deadbolt guiding slot in a housing, and a magnet disposed in the sleeve. The deadbolt is operable to slide between a locking position, where a retaining end of the sleeve projects outwardly from the housing, and an unlocking position, where the retaining end retreats into the slot. A driving member is operable to drive the deadbolt to slide from the locking position to the unlocking position. The door frame lock kit includes a lock frame and a magnet which is magnetically attracted to the magnet to urge the deadbolt to slide into the lock frame in the locking position.