Oven Front Strip Assembly for Framed Door Emphasis

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Solution Overview

Problem

Existing oven designs with flush and integral front strips struggle to effectively surround the oven door on multiple sides, leading to a lack of emphasis on the functional unit and limited design freedom for markings and cleaning, especially due to material flow issues in deep-drawing processes.

Innovation Solution

The oven front design features wide, integral front strips that extend parallel to the oven door's movement direction, creating a picture frame-like appearance, with vertical flanges and hidden fastening elements for improved attachment and cleaning, and a divided operating and display area for task-specific differentiation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If narrow front strips are used in deep-drawing process, then manufacturing is feasible, but the oven door is not effectively surrounded and visual emphasis is lost

Engineering Contradiction:
Improvefront strip widthVSAvoiddeep-drawing process feasibility
Core Design Contradiction:
ShapeVSEase of manufacture

Solution Approach 1:

The front strip is divided into two separate components: a visible front strip portion and a fastening element portion. This segmentation allows the front strip to appear wide for visual emphasis while the actual manufactured components can be produced with standard deep-drawing dimensions. The fastening element is separately attachable to the oven muffle, decoupling the visual width requirement from manufacturing constraints.

Inventive Principle:
Principle #1Segmentation

2Reliability

If fastening elements are placed on the front surface, then attachment to oven muffle is secure, but cleaning access is blocked and appearance is interrupted

Engineering Contradiction:
Improveattachment securityVSAvoidcleaning accessibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The fastening elements are extracted from the visible front surface and repositioned to the rear side of the front strip assembly. The fastening elements attach to the oven muffle from behind, eliminating visual interruptions and allowing unobstructed cleaning of the front surface. The fastening function is separated from the visible facade, maintaining both security and cleanliness.

Inventive Principle:
Principle #2Taking out (Extraction)

3Area of stationary object

If wide front strips are used, then visual emphasis and design flexibility are improved, but material flow issues in deep-drawing worsen

Engineering Contradiction:
Improvefront strip areaVSAvoidmaterial flow control
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The front strip assembly is segmented into multiple manufacturable components that can be produced with standard deep-drawing precision and then assembled to create the overall wide appearance. This includes separate front strip portions and fastening element portions, each within acceptable manufacturing tolerances, which together form the visually emphasized wide structure.

Inventive Principle:
Principle #1Segmentation

4Stability of the object's composition

If front strips are made integral with oven front, then structural stability is improved, but design flexibility for markings and modifications is reduced

Engineering Contradiction:
Improvestructural stabilityVSAvoiddesign flexibility
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The front strip assembly uses segmented components that are structurally integrated through secure fastening elements, maintaining stability while allowing individual components to be replaced or modified. The modular nature of the segmented design enables design flexibility for markings and modifications without compromising the overall structural integrity of the integrated appearance.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP2045534B1Oven
Publication Date: 2015.12.09 BSH HAUSGERATE GMBH
  • EP2045534B1 patent drawingFigure 1~4

AI summary

The oven (1) has a stationary oven front (11) with an operating and display surface (4) and front strips (10) integral therewith and enclosing an oven door (7) on both sides. According to the invention, the front strips (10) are formed over a large area with a width in relation to the height of the operating and display area (4) of essentially less than 1:5, preferably 1:3.5.