Electrical Device Coding Lugs and Alignment Guides

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Solution Overview

Problem

Existing electrical devices for motor speed control suffer from errors in wiring and incorrect assignment due to lack of effective coding and alignment mechanisms, leading to inefficiencies in assembly and operation.

Innovation Solution

The electrical device incorporates a connection part with a cover part, featuring coding lugs and guides to ensure correct alignment and coding between printed circuit boards, preventing incorrect wiring and tilting during assembly, utilizing a modular system with coded connections and guides to facilitate precise assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If coding mechanisms and alignment guides are added to prevent wiring errors and tilting, then assembly reliability and connection accuracy are improved, but device complexity increases

Engineering Contradiction:
Improveassembly reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by incorporating alignment guides and coding mechanisms into the housing structure before assembly. The alignment guides pre-establish the correct positioning path for the cover part, while coding elements on the housing and cover part pre-configure the connection relationship, preventing wiring errors before they occur during assembly operations.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses an intermediary approach by introducing alignment guides as mediator elements between the housing and cover part. These guides act as intermediaries that facilitate correct alignment and coding during assembly, enabling reliable connections without requiring complex manual positioning or alignment procedures.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If coding lugs and alignment guides are integrated into the housing and cover part, then connection accuracy and prevention of tilting are improved, but manufacturing complexity increases

Engineering Contradiction:
Improveconnection accuracyVSAvoidease of manufacture
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent applies merging by integrating coding lugs, alignment guides, and housing structures into unified components. The coding elements are combined with the housing and cover part manufacturing processes, allowing multiple functions to be achieved through single integrated parts rather than separate assemblies, thereby improving connection accuracy while managing manufacturing complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent implements multi-functionality by designing the housing and cover part to simultaneously serve as structural components, alignment guides, and coding mechanisms. The same parts provide both mechanical support and precise positioning functions, reducing the need for additional specialized components and simplifying the overall manufacturing process.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3845045B1Electrical device, comprising a connection part and a cover part connected to the connection part
Publication Date: 2026.02.18 SEW EURODRIVE GMBH & CO KG
  • EP3845045B1 patent drawingFigure 1
  • EP3845045B1 patent drawingFigure 2
  • EP3845045B1 patent drawingFigure 3

AI summary

The invention relates to an electrical device, comprising a connection part and a cover part connected to the connection part, in particular a cover part placed onto and connected to the connection part, characterized in that a receiving part is received and arranged in the connection part, wherein: a first circuit board is connected to the receiving part in a coded manner; a second circuit board is arranged in the cover part, which second circuit board is connected to, in particular fitted with, a frame part in a coded manner; the first circuit board is connected to, in particular fitted with, a plug connector part; the second circuit board is connected to, in particular fitted with, a mating plug connector part; a leading guide for a plug-in connection is formed on the receiving part, which leading guide takes effect when the cover part is connected to the connection part, in particular guides the cover part as the cover part is placed onto the connection part, before contacting connection is established between the plug connector part and the mating plug connector part; the frame part can be, in particular is, connected to the receiving part in a coded manner.