Domestic household refrigeration device comprising a shelf having edge termination parts
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Solution Overview
Problem
Existing household refrigeration appliances lack a reliable and cost-effective storage solution for shelves that can be easily removed for cleaning and securely attached to prevent mechanical damage during transport and use.
Innovation Solution
The solution involves attaching edge termination parts to the rear edge of the shelf, which extend separately from the lateral edge sections, providing a holding force through elastic material tension, allowing for easy removal and secure attachment without the need for a full-width edge edging strip, and protecting the inner container from mechanical damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuous edge edging strip is attached to the entire rear edge of the shelf, then the shelf is securely held and protected from damage, but the manufacturing cost increases and the shelf cannot be easily removed for cleaning
Solution Approach 1:
The continuous edge edging strip is divided into separate edge termination parts that are attached only at specific lateral edge sections of the shelf rear edge. This segmentation reduces material usage and manufacturing cost while maintaining secure attachment functionality through strategic placement at support contact points.
Solution Approach 2:
Edge termination parts are attached only at lateral edge sections where support means contact the shelf, rather than along the entire rear edge. This local quality approach concentrates reinforcement where mechanically necessary while eliminating unnecessary material and cost in non-critical areas.
2Reliability
If a continuous edge edging strip is attached to the entire rear edge of the shelf, then the shelf is protected from mechanical damage, but the shelf cannot be easily removed for cleaning purposes
Solution Approach 1:
The shelf edge protection is segmented into discrete edge termination parts rather than a continuous strip. This allows the shelf to be easily removed by detaching only these small components, facilitating cleaning while maintaining protection during normal use.
Solution Approach 2:
The edge termination parts are designed to be detachable from the shelf, allowing them to be removed or adjusted easily. This extraction capability enables simple shelf removal for cleaning while maintaining structural integrity during operation.
3Reliability
If edge termination parts are attached at all lateral edges of the shelf, then complete protection is provided, but the device complexity and manufacturing cost increase
Solution Approach 1:
Edge termination parts are attached only at lateral edge sections where support means contact the shelf, identified through functional analysis as the critical protection zones. This local quality approach provides complete necessary protection while minimizing the number of parts and overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design ensures the shelf can be easily removed for cleaning, securely attached to prevent unintentional detachment, and protects the inner container, eliminating the need for a full-width edge edging strip and reducing manufacturing costs.
Implementation Method 1
which exert a holding force through elastic material tension
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a household refrigeration appliance, having a cold room (4), at least one shelf (6) mounted in the cold room (4), and an inner container (7) delimiting the cold room (4) with a rear wall (2) and opposite side walls (3a, 3b), of which each side wall (3a, 3b) has at least one of the support means (5) to form at least one pair of opposite support means (5), the opposite support means (5) being designed to support the compartment floor (6) in the cold room ( 4) with two opposite, lateral edge sections (6a, 6b) of the shelf (6) resting on the support means (5) and with a rear edge (6c) of the shelf (6) facing the rear wall (2) of the inner container (1). The shelf (6) has two edge termination parts (8a, 8b) attached to its rear edge (6c) and extending separately from each other in the area of the two lateral edge sections (6a, 6b) of the shelf (6).