Angled Fuel Coupling Anti-Twist Device for Breakaway Activation
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Solution Overview
Problem
Angled coupling elements in fueling systems can lead to suboptimal power transmission and unreliable breakaway coupling activation, particularly when a fuel nozzle is forgotten in a vehicle's tank neck, causing jamming and potential damage due to inadequate torque management.
Innovation Solution
Incorporating an anti-twist device on the first fluid connection that allows relative torsion between the fuel nozzle and coupling element only when a defined torque is reached, ensuring proper alignment and activation of the breakaway coupling through a mechanism involving a locking pin or permanent magnets, preventing screw connection loosening and facilitating safe separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a screw connection is used to fix the coupling element to the liquid line, then rotational fixation is improved, but the ability to allow controlled twisting is worsened
Solution Approach 1:
The anti-twist device transforms the static screw connection into a dynamic system that can adapt its behavior. Under normal conditions, it maintains rigid rotational fixation for stability. When excessive torque is detected, it dynamically transitions to allow controlled twisting, preventing damage while maintaining operational flexibility.
Solution Approach 2:
The anti-twist device acts as an intermediary element between the screw connection and the coupling element. It mediates the torque transmission, allowing the screw connection to remain fixed while enabling controlled rotation through the anti-twist mechanism itself, thus protecting the overall assembly.
2Ease of operation
If the coupling element is designed with an angled connection, then the torque from hose weight is reduced, but power transmission to the breakaway coupling becomes suboptimal
Solution Approach 1:
The anti-twist device introduces dynamic torque management that compensates for the angled configuration's power transmission limitations. By allowing controlled twisting under excessive load, it ensures that sufficient power can be transmitted to activate the breakaway coupling when needed, while maintaining the ergonomic benefits of the angled design during normal operation.
3Reliability
If the breakaway coupling is designed to separate under defined tensile force, then safety is improved, but reliability of separation activation under torque conditions is worsened
Solution Approach 1:
The anti-twist device converts the potentially harmful effect of excessive torque into a beneficial activation mechanism. When torque exceeds the defined threshold, the anti-twist device allows rotation that directly activates the breakaway coupling's separation function, transforming a harmful mechanical stress into a safe separation event.
Solution Approach 2:
The anti-twist device serves as an intermediary that translates torque conditions into activation signals for the breakaway coupling. It mediates between the mechanical torque applied to the system and the breakaway coupling's separation mechanism, ensuring reliable activation under various loading conditions including torque-induced scenarios.
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 anti-twist device ensures secure and defined separation of the fuel nozzle by allowing rotation at a specific torque, preventing screw connection loosening and ensuring safe operation, even under large torque conditions, thus enhancing user safety and operational convenience.
Implementation Method 1
allows relative torsion between the first part of the fluid line and the coupling element when a defined torque occurs between the first part of the fluid line and the coupling element
Implementation Method 2
In a preferred embodiment, the anti-twist device comprises two permanent magnets, which are arranged in such a way that a pole of one permanent magnet interacts with the opposite pole of the other permanent magnet
Data Source
Figure 1~2
Figure 3~6
Figure 7
AI summary
The invention relates to a coupling element (2), which comprises a first liquid connection (3) for connecting to a first part of a liquid line (1) and a second liquid connection (4) for connecting to a second part of a liquid line (5). In addition, the coupling element comprises a break-away coupling (6). The first liquid connection (3) is designed to establish a threaded connection to the first part of the liquid line (1). The two longitudinal axes (7, 8) of the liquid connections (3, 4) lie at an angle to each other. According to the invention, a rotation-preventing element (9) is provided on the first liquid connection (3) of the coupling element (2), which rotation-preventing element permits a relative rotation between the first part of the liquid line (1) and the coupling element (2) if a defined torque acts between the first part of the liquid line (1) and the coupling element (2). Safe operation of the coupling element is ensured by the rotation-preventing element according to the invention.