Fluid Line Coupling Head Latching Connection
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Solution Overview
Problem
Existing coupling systems for fluidic lines in pneumatic connections, such as those between towing vehicles and trailers, face challenges with secure and flexible connections, particularly when using plastic materials, as screw threads can fail under stress and integral connections are often limited to single-use due to the inability to detach without damage.
Innovation Solution
A coupling system utilizing a latching or locking connection between the fluidic line and the coupling head, which allows for flexible use with various fluidic lines and withstands harsh operating conditions, including vibrations, without the need for screw threads, and enables easy exchange of the coupling head without replacing the fluidic line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If screw threads are used to connect the fluidic line to the coupling head, then the connection can be assembled and disassembled, but the connection can loosen under vibrations and operational stresses
Solution Approach 1:
The connection system is divided into two functional parts: a threaded coupling element for assembly/disassembly operations and a separate locking mechanism (locking element and locking recess) that engages to secure the connection during operation. This segmentation allows each component to fulfill its specific function optimally.
Solution Approach 2:
The locking element is pre-positioned on the coupling element and the locking recess is pre-formed in the coupling head. When the coupling element is screwed into the coupling head, the locking elements automatically engage with the locking recesses, providing preliminary securing action before operational stresses are applied.
2Reliability
If integral connections are used to connect the fluidic line to the coupling head, then the connection is secure and durable, but the coupling head cannot be detached without damaging the fluidic line
Solution Approach 1:
The connection system transitions from a static integral connection to a dynamic reusable connection. The coupling element can be repeatedly assembled and disassembled from the coupling head while maintaining connection security through the locking mechanism, enabling multiple uses without damage to the fluidic line.
Solution Approach 2:
The coupling element is extracted as a separate replaceable component from the integral connection system. This allows the coupling element to be removed and replaced without damaging the fluidic line or coupling head, while the locking mechanism ensures secure connection during use.
3Ease of manufacture
If the coupling head is designed for single-use with integral connections, then manufacturing is simplified, but replacement requires replacing both the coupling head and fluidic line
Solution Approach 1:
The system is segmented into a reusable coupling head and a replaceable coupling element. This allows the more expensive coupling head to be reused while only the simpler coupling element needs replacement, reducing repair costs.
Solution Approach 2:
The coupling element is designed as a simpler, more economical component that can be replaced without replacing the entire coupling head assembly. This reduces the cost of repairs while maintaining connection reliability.
Data Source
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AI summary
In an arrangement with a fluidic line (11) and a coupling head (1) for the pneumatic connection of a towing vehicle and a trailer or for the pneumatic connection of two trailers, the coupling head (1) has a housing (2) with a connection (13) for the fluidic line (11). The fluidic line (11) has a coupling element (12) at its end, via which the fluidic line (11) is connected to the connection (13). The coupling element (12) is coupled to the housing (2) via a locking or latching connection (14), forming a tight connection between the line (11) and the housing (2).