Cooking device door unit

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Solution Overview

Problem

Existing cooking appliance doors require complex assembly processes due to separate components for inner and intermediate pane holding units, leading to increased assembly effort and potential misalignment during installation.

Innovation Solution

The inner and intermediate pane holding units are designed as a single assembly unit, with strip-shaped holding elements and elastic clamping elements to simplify assembly, and a symmetric design that allows for flexible use on both sides, reducing the need for additional components and installation space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If separate components are used for inner pane holding unit and intermediate pane holding unit, then each component can be independently manufactured, but assembly effort increases and misalignment occurs during installation

Engineering Contradiction:
ImproveIndependent manufacturing of holding unitsVSAvoidAssembly process complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent combines the inner pane holding unit and intermediate pane holding unit into a single integrated assembly unit. This merging eliminates the need for separate installation of multiple components, reduces assembly effort, and prevents misalignment issues that occur when separate components are installed independently in the door base.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If multiple separate holding units are installed in the door base, then each pane can be securely held, but the number of components increases and assembly time increases

Engineering Contradiction:
ImprovePane holding securityVSAvoidAssembly speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

By integrating multiple holding functions into a single assembly unit, the patent maintains secure holding of both inner and intermediate panes while significantly reducing the number of separate components that need to be installed. This single unit can be installed as one piece, improving assembly speed without compromising holding reliability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The assembly unit is designed to perform multiple functions simultaneously - holding both the inner pane and intermediate pane, providing mounting points for both panes, and ensuring proper alignment. This multi-functionality reduces the total component count while maintaining secure holding of multiple panes.

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

3Adaptability or versatility

If separate components are used for pane holding, then design flexibility is maintained, but additional components require additional installation space

Engineering Contradiction:
ImproveDesign flexibility of holding unitsVSAvoidInstallation space in door base
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The integration of multiple holding units into a single assembly unit consolidates the space required for installation. Instead of requiring separate installation spaces for multiple independent components, the unified design occupies a compact, optimized space in the door base while maintaining all necessary holding functions.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of manufacture

If separate holding units are used, then each unit can be optimized for its specific pane, but assembly effort and potential misalignment increase

Engineering Contradiction:
ImproveSpecialized optimization for each paneVSAvoidAlignment precision during assembly
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

By combining the holding units into a single integrated assembly, the patent ensures that alignment features and mounting points are pre-positioned with high precision during manufacturing. This eliminates misalignment issues that occur during field assembly of separate components, while still allowing each pane to be optimized for its specific requirements through the integrated design.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP2369240B1Cooking device door unit
Publication Date: 2020.07.15 BSH HAUSGERATE GMBH
  • EP2369240B1 patent drawingFigure 1
  • EP2369240B1 patent drawingFigure 2
  • EP2369240B1 patent drawingFigure 3~4

AI summary

The unit has an inner disk holding unit (14a) for an inner disk (16a), and an intermediate disk holding unit (18a) for an intermediate disk (22a). The holding units form a mounting unit for common mounting in a door base (12a), and designed as a single piece. The inner holding unit and/or the intermediate holding unit has strip-shaped holding elements (24a, 26a) for accommodating the inner and intermediate disks. The mounting unit has a stop element (42a) for a hinge element, and formed symmetrically to a transverse axis, where the door unit is mounted in a side area of the door base. An independent claim is also included for a method for mounting a cooking device door with a cooking device door unit.