Refrigerator Telescopic Drawer Stop with Upward Energy Dissipation
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Solution Overview
Problem
Refrigeration appliances with telescopic extensions face damage risks when the telescopic rails abruptly stop, leading to sudden loads that can cause cracking in the built-in parts, especially when fully loaded.
Innovation Solution
A refrigeration device design featuring a sloping surface on the built-in part and cover part allows the telescopic rails to slide slightly upwards when reaching a stop, dissipating kinetic energy without sudden loads, and includes a projection to secure the part against accidental lifting and detachment, eliminating the need for shock-absorbing adapters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the telescopic rails are designed with abrupt stops to limit the movement of the built-in part, then the positioning precision is improved, but the built-in part is subjected to sudden loads that can cause cracking in the material
Solution Approach 1:
The patent applies beforehand cushioning by providing a projection on the built-in part that engages under the end wall of the cover part before the telescopic rails reach their stop position. This engagement creates a gradual deceleration mechanism that cushions the impact, preventing sudden loads on the material while maintaining positioning precision. The projection acts as a pre-positioned protective element that absorbs the shock before it can cause damage to the built-in part.
2Stability of the object's composition
If the built-in part is made heavily loaded to ensure structural stability, then the stability is improved, but the risk of damage when the telescopic rails hit a stop increases
Solution Approach 1:
The patent introduces an intermediary element - the projection on the built-in part that engages under the end wall of the cover part. This intermediary creates a mechanical linkage that gradually transfers the stopping force, allowing the heavily loaded built-in part to maintain its structural stability while the intermediary mechanism prevents sudden impact loads that could cause damage.
3Device complexity
If no shock-absorbing adapters are used to simplify the device structure, then the device complexity is reduced, but the built-in part is exposed to sudden loads that can cause cracking
Solution Approach 1:
The patent applies universality by designing the projection on the built-in part to serve multiple functions: it limits the movement of the built-in part on the telescopic extensions, provides shock absorption by engaging under the end wall before the stop is reached, and prevents accidental lifting. This multi-functional element eliminates the need for separate shock-absorbing adapters, reducing device complexity while maintaining material strength.
4Ease of operation
If the telescopic rails are designed to allow full movement freedom for ease of operation, then the ease of operation is improved, but the built-in part can be accidentally pulled out beyond the stop or detached
Solution Approach 1:
The patent applies local quality by providing a projection at the specific location on the built-in part that engages under the end wall of the cover part. This localized feature restricts movement only in the critical area where the built-in part interfaces with the telescopic rails, allowing full movement freedom elsewhere for ease of operation while preventing accidental pulling out or detachment at the critical interface.
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
The design effectively reduces the risk of damage to the built-in parts by dissipating kinetic energy and preventing accidental detachment, ensuring smooth operation and extended component lifespan.
Implementation Method 1
A sloping surface, which can be a forward sloping wall of the built-in part or a forward sloping outside on the end wall of the cover part, creates the possibility that when the built-in part is pushed in the telescopic rails reach a stop, the built-in part can slide slightly upwards along the sloping surface. Thus, kinetic energy of the built-in part - which can be considerable if the built-in part is e.g. B. is a fully loaded drawer - can be dissipated without exposing the built-in part to a sudden load
Data Source
Figure 1~3
Figure 4~5
AI summary
The invention relates to a refrigerating device comprising a built-in part that is guided on telescopic pull-out mechanisms (5) and can be extracted from an interior chamber (3). Each telescopic pull-out mechanism (5) comprises at least one rail which is fixed (9) in the interior chamber (3), a rail (12) that is movable with the built-in part (4) in the direction of depth of the interior space (3), and a cover part (13) extending along the movable rail (12). The cover part (13) has a front wall (21, 22, 23) covering a front end of the rails (9, 12) in the pull-out direction.