Socket Assembly Tool-Free Cover Frame Positioning

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Solution Overview

Problem

Existing socket arrangements for device installation trunking face difficulties in precise tool-free positioning of cover frames and lack security against unauthorized removal, either requiring tools for assembly or increasing assembly effort.

Innovation Solution

A socket arrangement with a snap-in connection between the cover frame and socket unit, featuring retaining rails and guide elements for easy installation and secure locking, ensuring the cover frame cannot be removed without tools, utilizing a pre-wired electrical mains socket and color-coded ring for visual labeling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the cover frame is clamped to achieve secure positioning, then the cover frame is firmly fixed, but exact positioning becomes more difficult and requires tools

Engineering Contradiction:
Improvesecure positioning of cover frameVSAvoidease of positioning cover frame
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The socket unit is designed to automatically guide and position the cover frame through integrated guide elements (protrusions and recesses) that self-align during the snapping process, eliminating the need for tools or complex positioning mechanisms while ensuring exact placement

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The connection system is divided into separate functional elements: guide elements for positioning, snap-in elements for securing, and release mechanisms for removal. This segmentation allows each element to perform its specific function independently, achieving secure fixation without complicating the positioning process

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If tool-free assembly is used to simplify installation, then assembly effort is reduced, but protection against unauthorized removal is lost

Engineering Contradiction:
Improveease of assemblyVSAvoidprotection against unauthorized removal
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The connection strength parameter is dynamically controlled through the snapping mechanism that requires specific force thresholds for both attachment and release. The latching elements engage at a certain force level to prevent accidental removal, while the release mechanism is designed to disengage at a different force threshold, providing security against unauthorized removal while maintaining ease of legitimate assembly and disassembly

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

Latching elements serve as intermediary components between the cover frame and socket unit, providing a mechanical interlock that prevents unauthorized removal. These elements engage automatically during tool-free assembly but require deliberate action (insertion tool or sufficient force) to release, thus mediating between ease of assembly and security requirements

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If additional fastening elements are used to secure the cover frame, then protection against unauthorized removal is improved, but assembly effort increases and tools are required

Engineering Contradiction:
Improveprotection against unauthorized removalVSAvoidnumber of fastening elements
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Multiple functions are merged into integrated components: the guide elements also serve as positioning features, the snap-in elements provide both securing and positioning, and the latching elements combine security function with automatic engagement. This merging eliminates the need for separate fastening elements, reducing device complexity while maintaining security

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The snap-in elements and latching elements are designed to perform multiple functions: guiding the cover frame into position, securing it firmly, preventing unauthorized removal, and enabling controlled release. This multi-functionality reduces the total number of components needed while achieving all required objectives

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

Data Source

PatentEP2650994B1Socket assembly for device installation assemblies with a holding rail at the channel base and device installation channel comprising such a socket assembly
Publication Date: 2017.08.30 REHAU AG & CO
  • EP2650994B1 patent drawingFigure 1~2
  • EP2650994B1 patent drawingFigure 3~4
  • EP2650994B1 patent drawingFigure 5

AI summary

The arrangement has a socket unit (2) that is provided with socket base, socket receptacle (4) and a cover frame, such that latching connection to socket unit is flexible. The locking connection to socket unit is integrally formed through cover frame, when locking elements are engaged with socket receptacle corresponding to locking mount portion (12). The locking connection to socket unit is integrally formed through socket receptacle, when locking elements are engaged with cover frame corresponding to locking mount portion. An independent claim is included for device channel.