Wireless Auxiliary Digital Lock Structure for No-Drill Door Retrofit

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Solution Overview

Problem

Conventional digital locks require complex installation by qualified technicians and cannot be easily installed without modifying the door panel, deterring homeowners from switching to digital locks.

Innovation Solution

A separate auxiliary digital lock structure with wireless signal transmission capabilities, comprising a panel device and a latch device mounted on the outer and inner sides of the door panel respectively, allowing for quick installation and unlocking through wireless signal transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional digital lock is installed on a door panel, then digital locking functionality is achieved, but the door panel requires modification and complex installation by technicians

Engineering Contradiction:
Improveease of installationVSAvoidinstallation complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The digital lock system is divided into two separate components: a panel device mounted on the outer side of the door panel and a latch device mounted on the inner side. This segmentation allows each component to be installed independently without requiring complex modifications to the door panel, enabling DIY installation while maintaining full digital locking functionality

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A wireless signal transmission module acts as an intermediary between the panel device and latch device, enabling communication and control without physical wiring. This eliminates the need for complex electrical installations and modifications to the door panel, allowing homeowners to install the system themselves

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a conventional digital lock is installed on a door panel, then digital locking functionality is achieved, but the door panel structure is modified

Engineering Contradiction:
Improvecompatibility with existing door panelsVSAvoiddoor panel modification
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By separating the digital lock into two independent devices mounted on opposite sides of the door panel, the system adapts to existing door panels without requiring modifications. The panel device attaches to the outer surface while the latch device attaches to the inner surface, preserving the door panel's original structure

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The traditional integrated digital lock design that requires embedding into the door panel is extracted and replaced with two separate magnetic mounting components. This extraction eliminates the need to create receiving spaces or modify the door panel structure while maintaining all digital locking functions

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If qualified technicians are required for installation, then proper installation is ensured, but installation time and cost increase

Engineering Contradiction:
Improveinstallation qualityVSAvoidinstallation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The separate auxiliary digital lock structure is designed with simple magnetic mounting and wireless configuration that enables homeowners to install and configure the system themselves without requiring qualified technicians. The modular design and automated pairing process make the installation process accessible to non-experts while ensuring proper functionality

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The panel device and latch device are pre-configured with wireless communication capabilities and magnetic mounting mechanisms before installation. This preliminary preparation eliminates the need for complex on-site configuration and ensures reliable installation by homeowners without requiring technical expertise

Inventive Principle:
Principle #10Preliminary 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

Enables easy installation and operation of digital locks without modifying the door panel, maintaining its integrity, and facilitating quick unlocking via wireless signals.

Implementation Method 1

a wireless signal transmission module, the trigger module generating and sending an unlocking trigger signal to the wireless signal transmission module

Methodology Applied
Scientific EffectWireless signal transmission: Electromagnetic Induction

Data Source

PatentEP4672185A1Separate auxiliary digital lock structure
Publication Date: 2025.12.31 MH HOLDINGS USA CORP
  • EP4672185A1 patent drawingFigure 1
  • EP4672185A1 patent drawingFigure 2
  • EP4672185A1 patent drawingFigure 3

AI summary

A separate auxiliary digital lock structure includes: a panel device mounted on an outer side of the door panel and having at least one trigger module and a wireless signal transmission module, the trigger module generating and sending an unlocking trigger signal to the wireless signal transmission module; and a latch device mounted on an inner side of the door panel and having at least one latch control module, a wireless signal receiving module and a lock module, the wireless signal receiving module receiving and sending the unlocking trigger signal to the latch control module, allowing the latch control module to controllably cause the lock module to separate from a door frame. The separate auxiliary digital lock structure can be installed on the door panel yet still keeps the door panel intact. The panel device and latch device are attached to the door panel and perform wireless signal transmission.