DIN Rail Coupling Assembly With Rotatable Operator Links

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Solution Overview

Problem

Existing methods for attaching and removing devices from DIN rails often require tools, making the process difficult and time-consuming, especially when trying to prevent unintentional loosening.

Innovation Solution

A coupling assembly with rotatable operator links and a pivot mechanism that allows for one-handed operation, enabling easy installation and removal of devices from DIN rails without deep reaching, using a housing carrier with a recessed portion and a coupling assembly including DIN rail catches and pivot links.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a tool is required to remove the housing from the DIN rail to prevent unintentional loosening, then the reliability of the connection is improved, but the ease of operation deteriorates

Engineering Contradiction:
Improveconnection stabilityVSAvoidremoval ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The coupling assembly enables the housing to be removed by its own integrated operator links and DIN rail catches, without requiring external tools. The operator links directly manipulate the catches to disengage from the DIN rail, making the system self-servicing for removal operations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The operator links serve as intermediary elements between the user's manual operation and the DIN rail catches. By rotating the operator links, the user indirectly actuates the catches to move from engaged to disengaged positions, providing a mechanical mediation that simplifies the removal process while maintaining secure connection during operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If a tool is required to remove the housing from the DIN rail, then the reliability of the connection is improved, but the time required for removal increases

Engineering Contradiction:
Improveconnection stabilityVSAvoidremoval time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The integrated coupling assembly allows rapid self-service removal by rotating the operator links, eliminating the time-consuming process of tool insertion, alignment, and manual manipulation that would otherwise be required to disengage the housing from the DIN rail.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The operator links provide dynamic, multi-position control over the DIN rail catches, allowing quick transition between engaged and disengaged states through simple rotational motion. This dynamic mechanism enables rapid removal compared to static tool-based approaches.

Inventive Principle:
Principle #15Dynamics

3Reliability

If deep reaching is required to access the removal mechanism, then the connection stability is improved, but the ease of operation deteriorates

Engineering Contradiction:
Improveconnection stabilityVSAvoidaccessibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The operator links are positioned and oriented such that their rotational axis and manipulation point are accessible from the front or top of the housing, rather than requiring access from the rear or deep interior where the DIN rail connection occurs. This dimensional repositioning makes the control mechanism easily accessible while maintaining secure rearward connection.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2824779B1Method and apparatus to attach an electrical device to a din rail
Publication Date: 2021.01.06 ROCKWELL AUTOMATION TECH INC
  • EP2824779B1 patent drawingFigure 1
  • EP2824779B1 patent drawingFigure 2
  • EP2824779B1 patent drawingFigure 3

AI summary

Apparatus and methods for attaching and detaching a device to and from a DIN rail, the apparatus includes a housing carrier with a coupling assembly. The coupling assembly including one or more operator links, the one or more operator links rotatable relative to the housing carrier about a pivot, and the coupling assembly includes at least one DIN rail catch. The operator links have a first position in which the at least one DIN rail catch is in a first coupled position, and the operator links have a second position in which the at least one DIN rail catch is in a second uncoupled position. The operator links are operable to move the at least one DIN rail catch from the first coupled position to the second uncoupled position when the operator link is rotated about the pivot.