Glass-Door Refrigerator Module Shaft for Rear Access Testing

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Solution Overview

Problem

Conventional refrigeration devices require dismantling of the front panel to access the electronic module for testing or repairs, which is costly and complicates production, and prevents pre-assembly electrical function testing, compromising production safety and reliability.

Innovation Solution

A refrigeration device design featuring a receiving shaft extending from the outer edge of the housing part into its interior, allowing the electronic module to remain freely accessible without removing the outer wall, enabling insertion and final assembly testing without disassembly, with a glass panel forming the outer wall and a transparent viewing window for operation and inspection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the electronic module is pre-assembled behind the front panel before attaching the front panel to the housing part, then the assembly sequence is mandatory and the front panel structure is simple, but the electronic module becomes inaccessible for testing and repairs without dismantling the front panel

Engineering Contradiction:

Improveassembly sequenceVSAvoidaccess to electronic module

Core Design Contradiction:

Ease of manufactureVSEase of repair

Solution Approach 1:

The patent divides the access path to the electronic module into two independent routes: one through the front panel (for normal operation) and another through the rear wall (for maintenance and testing). This segmentation allows the electronic module to be accessed from the rear without dismantling the front panel, resolving the contradiction between simple assembly structure and ease of repair.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a rear wall with an opening as an intermediary access point to the electronic module. This mediator structure enables technicians to reach the electronic module from the rear side of the housing part, providing an alternative path that avoids the need to dismantle the front panel while maintaining the original assembly sequence.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of repair

If the front panel is removed to access the electronic module for repairs or replacement, then the electronic module becomes freely accessible, but the process becomes costly and complicated

Engineering Contradiction:

Improveaccess to electronic moduleVSAvoiddismantling process

Core Design Contradiction:

Ease of repairVSDevice complexity

Solution Approach 1:

The patent creates separate access routes to the electronic module: one through the front panel and another through the rear wall. By segmenting the access paths, the rear opening provides a direct route for repairs and replacements without requiring removal of the front panel, thereby reducing device complexity and labor costs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent extracts the maintenance access function from the front panel assembly by providing a dedicated rear opening. This extraction allows repair operations to be performed independently of the front panel, eliminating the need for costly and complicated dismantling procedures.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If the electronic module is installed from the front into a specified assembly chamber and then covered by the front panel, then the assembly process is simple, but final functional testing cannot be performed without dismantling the front panel

Engineering Contradiction:

Improveassembly speedVSAvoidproduction safety

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent segments the testing access from the front panel by providing a rear opening that leads directly to the electronic module. This allows quality control personnel to perform final functional tests on the electronic module without dismantling the front panel, maintaining both assembly speed and production safety.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rear opening acts as an intermediary access point that enables final functional testing of the electronic module while the front panel remains intact. This mediator structure preserves the simple assembly process while ensuring production safety through accessible testing.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Device complexity

If the electronic module is accessible only through the front panel, then the front panel structure is simple, but any testing or replacement requires complete dismantling of the front panel

Engineering Contradiction:

Improvefront panel structureVSAvoiddismantling and reassembly time

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent divides the housing part into front and rear access paths to the electronic module. The rear opening provides a dedicated maintenance access that is independent of the front panel structure, allowing repairs and testing without time-consuming dismantling and reassembly of the front panel.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent extracts the maintenance access function from the front panel by creating a separate rear opening. This extraction eliminates the need to dismantle and reassemble the front panel for testing or replacement operations, significantly reducing time loss while maintaining simple front panel structure.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentEP2792981B1Refrigeration device with a mounting shaft for an electronic module

Publication Date: 2017.04.12 BSH HAUSGERATE GMBH

AI summary

The invention relates to a refrigeration unit (1) comprising at least one housing part (5) with at least one outer wall (2). The outer wall of the housing part (5) is partially or completely formed by a glass plate (2).