Swing Oven Door Closure with Inverted Hook Placement

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Solution Overview

Problem

Existing closure systems for swing oven doors are complex and have protruding elements that compromise safety and design, making them difficult to clean and aesthetically unpleasing.

Innovation Solution

The closure system integrates the hook seat element into the door frame, with the hook element positioned at the oven frame, ensuring a compact structure and automatic vertical centring during closure, and using the same material as the door frame for a seamless design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the hook element is assembled at the oven door, then the closure system can function, but protruding elements disturb the user and impair security

Engineering Contradiction:
Improveclosure system functionVSAvoidprotruding elements
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent inverts the conventional arrangement by placing the hook element at the oven frame and the hook seat element at the oven door. This inversion eliminates protruding elements from the oven door surface, as the hook seat element is recessed into the door, while maintaining the closure function through the complementary positioning at the frame.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The hook seat element is nested into a recess of the oven door, with its cross section matching the door frame shape. This nesting approach allows the closure mechanism to be integrated within the door structure rather than protruding from it, eliminating safety hazards while preserving functionality.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If the latch housing is arranged at the vertical side wall of the oven door, then the closure system can operate, but it causes a jagged structure of the oven door

Engineering Contradiction:
Improveclosure system operationVSAvoidoven door structure
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The patent merges the hook seat element with the oven door structure by positioning it within a recess and giving it the same cross-sectional shape as the door frame. This merging creates a seamless, integrated appearance without jagged edges, while the closure operation remains functional through the coordinated movement with the hook element at the frame.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of manufacture

If the hook seat element has a different shape from the door frame, then it can be easily manufactured, but it does not form an integrated part of the door frame

Engineering Contradiction:
Improvehook seat element productionVSAvoidintegration with door frame
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The patent applies local quality by giving the hook seat element a cross-sectional shape that matches the door frame at its specific location. This localized shape adaptation allows the element to integrate seamlessly with the door frame's geometry while still being manufacturable using standard molding or fabrication processes for the overall component.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP2636957B1A cooking oven including a swinging oven door with a closure system of said door
Publication Date: 2017.10.11 ELECTROLUX HOME PROD CORP NV
  • EP2636957B1 patent drawingFigure 1
  • EP2636957B1 patent drawingFigure 2
  • EP2636957B1 patent drawingFigure 3

AI summary

The present invention relates to a cooking oven (20) including a swing oven door (22) and a closure system (10, 12) for said swing oven door (22). The closure system comprises a hook element (10) attached or attachable at the cooking oven. The closure system comprises a hook seat element (12) attached or attachable at the cooking oven. The hook seat element (12) includes an opening (14) for receiving a hook (16) projecting from the hook element (10). The hook element (10) and the hook seat element (12) are detachably connectable by a latching mechanism. The hook element (10) is attached or attachable at an oven frame (32) of an oven chassis (30), and the hook seat element (12) is attached or attachable at a door frame (26) of an oven door (22) of the cooking oven (20).