Refrigerator Door Frame With Seamless Edge for Flexible Panel Design

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Solution Overview

Problem

Refrigerating storing devices have limited design freedom for their access elements, such as doors and drawers, which restricts aesthetic and functional customization while maintaining manufacturing cost efficiency.

Innovation Solution

The access element for refrigerating storing devices is manufactured using an extrusion profile with interconnected portions that are folded around a sheet metal or glass panel, incorporating a seamless edge formed from polyurethane material, eliminating the need for additional fixtures and allowing for increased design flexibility without raising production costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional sheet metal panels or glass panels are used for access elements, then manufacturing cost is controlled, but design freedom is limited

Engineering Contradiction:
Improvedesign freedomVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The access element is divided into separate functional components: a frame structure and a panel (glass or sheet metal). The frame can be manufactured independently with complex geometries and folded configurations, while the panel remains a simple, cost-effective component. This segmentation allows the frame to provide design freedom without increasing panel manufacturing costs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The frame structure utilizes three-dimensional folded configurations and spatial arrangements to achieve design freedom. By moving from two-dimensional panel designs to three-dimensional folded frame structures, the invention creates aesthetic and functional customization opportunities without requiring complex panel manufacturing.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Stability of the object's composition

If additional fixtures are used to assemble access elements, then structural stability is improved, but assembly complexity increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidassembly complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The frame structure is designed to integrate multiple functions into a single component: it provides structural support, aesthetic formatting, and built-in attachment mechanisms for panels. By merging these functions into the frame itself, the invention eliminates the need for separate fixtures while maintaining structural stability and reducing assembly complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The frame structure incorporates self-aligning and self-securing features that enable the panel to be attached without additional fixtures. The folded configurations and geometric design of the frame allow it to automatically position and secure the panel, reducing assembly steps and complexity.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If seamless edges are formed using the extrusion profile folding method, then design freedom and cleaning ease are improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improvedesign freedomVSAvoidfolding precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The extrusion profile is pre-designed with predetermined fold lines and geometric features that guide the folding process. By preparing the profile geometry in advance with precise fold line locations and angles, the invention reduces the precision requirements during the actual folding operation, as the profile itself provides the necessary geometric constraints.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The invention utilizes changes in material properties and geometric parameters of the extrusion profile to facilitate folding. By selecting appropriate material characteristics and designing profile cross-sections with specific geometric features, the invention enables precise folding with reduced manufacturing complexity and precision requirements.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP2240733B1Refrigerating storing device with an access element and method for manufacturing the same
Publication Date: 2016.09.21 ILLINOIS TOOL WORKS INC
  • EP2240733B1 patent drawingFigure 1A~1B
  • EP2240733B1 patent drawingFigure 2A~2B
  • EP2240733B1 patent drawingFigure 3

AI summary

An access element (10, 60) for a refrigerating storing device (1) comprises a panel (11, 61) adapted for forming a surface part of the access element (10, 60), an extrusion profile (12, 62) arranged at least partially around the panel (11, 61) and engaging the panel on at least a circumferential portion (13, 63) thereof, and a seamless edge (15, 65) arranged at least partially on the extrusion profile (12, 62), the seamless edge being formed from plastic material. The seamless edge increases the stiffness and robustness of a front surface for correspondingly formed access members.