Fluid Connector Friction Welding Groove Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fluid connectors in motor vehicles face challenges in achieving stable and leak-proof friction weld connections under thermal and pressure loads, while minimizing impurities such as plastic chips during the friction welding process.
Innovation Solution
A fluid connector design featuring a sleeve-shaped connecting piece with an annular stop collar and a plastic pipe, where the pipe end face contacts the stop surface, and a friction weld connection is formed, with a circumferential groove or pocket to absorb friction melt, ensuring effective absorption and preventing uncontrolled escape or contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If friction welding is performed to connect plastic pipe to connecting body, then connection stability and fluid-tightness are improved, but impurities such as plastic chips are generated
Solution Approach 1:
The harmful friction melt is extracted from the connection area by the groove, separating it from the fluid path and preventing contamination. The groove takes out the molten plastic from the welding zone and channels it away from the plastic pipe interior.
Solution Approach 2:
The groove acts as an intermediary structure between the friction welding zone and the fluid-carrying space. It receives and contains the friction melt, preventing direct contact with the fluid path while allowing the welding process to proceed.
2Strength
If friction welding is performed to ensure fluid-tightness under pressure loads, then connection strength is improved, but uncontrolled escape of friction melt occurs
Solution Approach 1:
The groove extracts and contains the friction melt that would otherwise escape uncontrollably. By providing a designated receptacle within the connecting body, the melt is captured during the welding process under pressure loads.
Solution Approach 2:
The groove is pre-formed in the connecting body to counteract the potential harmful effect of friction melt escape before welding occurs. This preliminary structure prevents uncontrolled escape by providing a predetermined path and containment area.
3Reliability
If friction welding is performed to achieve stable connection under thermal loads, then connection reliability is improved, but contamination of fluid-carrying line may occur
Solution Approach 1:
The groove extracts friction melt from the welding zone and prevents it from entering the fluid-carrying line. By separating the melt containment function from the fluid transport function, contamination is avoided.
Solution Approach 2:
The groove serves as an intermediary barrier between the high-temperature welding zone and the fluid-carrying space. It prevents direct interaction between friction melt and the fluid, eliminating contamination risk.
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 provides a stable, leak-proof, and flow-optimized connection with minimal impurities, ensuring effective fluid-tightness and cleanliness during friction welding, even under high thermal and pressure conditions.
Implementation Method 1
heat is generated by the rotation of the fluid-carrying line within the connecting body, as a result of which the fluid-carrying line melts at least partially
Implementation Method 2
connecting bodies are used, which are often connected to the corresponding fluid-carrying lines by means of a friction welding process, in particular a rotary friction welding process
Implementation Method 3
after cooling by the frictional melt, a cohesive connection between the fluid-carrying line and the connecting body can be ensured
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a fluid connector (100) comprising a sleeve-shaped connecting piece (103) with an inner wall (111) and an annular stop collar (115) formed inside the sleeve-shaped connecting piece (103), which has an axially directed stop surface (117), and a plastic tube (101) comprising an inner wall (105), an outer wall (107), and an end face (109). The end face (109) of the plastic tube (101) contacts the axially directed stop surface (117). The outer wall (107) of the plastic tube (101) is connected to the inner wall (111) of the sleeve-shaped connecting piece (103) by means of a friction weld.