Telescopic Extension Bridge Locking for Easy Carrier Insertion
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Solution Overview
Problem
The existing telescopic extensions in refrigerating devices face difficulties in inserting heavy and unwieldy carried parts due to narrow slots requiring significant friction, making insertion challenging and increasing the risk of accidental detachment.
Innovation Solution
A wider gap is created to allow easy insertion of the first tongue, with a second, lighter tongue inserted to secure it, using a push-on cover with a resilient shell and catch to prevent detachment, and projections to ensure secure engagement without transferring torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the slot is made narrow to prevent accidental detachment through frictional engagement, then the reliability of connection is improved, but the ease of insertion deteriorates
Solution Approach 1:
The connection function is segmented into two distinct tongues: the first tongue (part of the carried part) provides structural connection, while the second tongue (part of the push-on cover) provides frictional engagement for security. This segmentation allows each tongue to be optimized for its specific function, resolving the contradiction between easy insertion and secure connection.
Solution Approach 2:
The push-on cover acts as an intermediary component that mediates between the carried part and the bridge. It contains the second tongue that engages frictionally in the gap, providing the necessary connection security without requiring the carried part itself to have a complex engagement mechanism, thus maintaining ease of insertion.
2Reliability
If the carried part is made heavy and robust to ensure secure connection, then the reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
The connection security function is separated from the carried part and assigned to the push-on cover with the second tongue. This allows the carried part to remain light and easy to handle, while the push-on cover provides the necessary frictional engagement for secure connection.
Solution Approach 2:
The second tongue is designed as a simple, lightweight component that is easy to manufacture and replace. It does not need to be part of the permanent carried part structure, allowing it to be a separate, easily manageable element that provides security without adding weight or complexity to the main carried part.
3Ease of operation
If the slot is made wide to facilitate easy insertion, then the ease of operation is improved, but the reliability of connection deteriorates
Solution Approach 1:
The connection function is divided between two tongues in the push-on cover: the first tongue engages in the slot for easy insertion, while the second tongue engages in the gap for frictional security. This segmentation allows the slot to remain wide for easy insertion while the second tongue provides the necessary connection security.
4Reliability
If the push-on cover is made rigid to provide secure locking, then the reliability is improved, but the ease of repair deteriorates
Solution Approach 1:
The push-on cover is designed with resilient and pliant properties, allowing it to be flexible during installation and removal (easy repair) while still providing sufficient rigidity when engaged to ensure secure locking (reliability). The material properties dynamically adapt to the operational requirements.
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
Facilitates easy insertion of the carried part while minimizing the risk of accidental detachment, providing a secure and attractive telescopic arrangement with reduced risk of damage from improper handling.
Implementation Method 1
the push-on cover should be resilient and pliant, so that it is possible to detach the catch from the bridge
Implementation Method 2
The second tongue is preferably held frictionally engaged in the gap so it is secure
Data Source
AI summary
The invention relates to two telescopic extensions that can be deployed in a refrigerating device to support thereon a goods carrier, such as a door-type goods carrier for refrigerated goods. Bridges are mounted on movable rails of the telescopic extensions and delimit, together with the movable rail, a gap for receiving a first carrier tab element of the goods carrier. The width of the gap is larger than the thickness of the first carrier tab element, and a first stabilizer tab element is inserted into the free space remaining after the first carrier tab element is inserted into the gap.