Magnetic Connection Structure for Low-Complexity Terminal Joining

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Solution Overview

Problem

Existing connectors require complex components and high manufacturing costs, necessitating a simplified and cost-effective connection structure.

Innovation Solution

A connection structure utilizing ferromagnetic elements and magnetic forces to connect and disconnect two connection terminals, with guide parts and blocks aligned for easy assembly and disassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a connection structure for a bone plate is provided with a threaded pin and a bone screw that passes through the pin, then the bone plate can be securely connected to adjacent bones, but the structure becomes complex and requires multiple components

Engineering Contradiction:
Improveconnection stabilityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the threaded pin and bone screw into a single integrated connection structure. The bone screw threadedly engages with the pin, creating a unified assembly that secures the bone plate to adjacent bones without requiring separate components for each function, thereby reducing overall structural complexity while maintaining connection stability

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If the connection structure requires precise alignment of the pin and bone screw, then secure connection is achieved, but the ease of operation decreases due to alignment requirements

Engineering Contradiction:
Improveconnection stabilityVSAvoidease of installation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The pin is pre-threaded with threads that match the bone screw, and the connection structure is designed so that the screw automatically aligns with the pin during insertion. This preliminary preparation of the threading interface eliminates the need for precise manual alignment operations, making installation easier while ensuring secure connection

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the bone screw has a threaded portion engaging with the pin and a head portion with a drive recess, then the connection can be securely fastened, but the manufacturing precision requirements increase

Engineering Contradiction:
Improveconnection stabilityVSAvoidthread engagement precision
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent specifies standardized thread parameters (thread pitch, diameter, depth) for the pin and bone screw that are designed to be mutually compatible. By optimizing these dimensional parameters, the connection achieves secure fastening through standard manufacturing tolerances without requiring excessive precision, balancing reliability with manufacturability

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP4203199B1Connection structure
Publication Date: 2026.04.22 LG ENERGY SOLUTION LTD
  • EP4203199B1 patent drawingFigure 1
  • EP4203199B1 patent drawingFigure 2(a)~2(b)
  • EP4203199B1 patent drawingFigure 3

AI summary

A connection structure according to an embodiment disclosed in the present disclosure includes: a first connection part provided on one surface of a first member including at least one conductor pattern; and a second connection part provided on the other surface of a second member having at least one conductive pad formed on one surface thereof, the second connection part being configured to be connected to one surface of the first connection part by means of a magnetic force so that at least one conductor pattern and at least one conductive pad are electrically connected to each other.