Fluid Line Connector Separating Element Injection Molding
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Solution Overview
Problem
In connectors for fluid lines used in diesel engines to transport urea, the injection molding compound can penetrate past the plug and into undesired regions, compromising the seal and the heating device's functionality, especially at low temperatures.
Innovation Solution
A separating element is placed between the injection molding compound and the plug to prevent its penetration into the housing, which is fused with the compound during the molding process to ensure a controlled application and maintain the seal's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the injection molding compound is applied to cover the outlet opening and secure the plug, then the sealing and structural integrity are improved, but the injection molding compound can penetrate past the plug and reach undesired regions compromising the seal and heating device
Solution Approach 1:
A separating element is introduced as an intermediary component between the plug and the injection molding compound. This separating element acts as a barrier that prevents the injection molding compound from penetrating past the plug into undesired regions, while still allowing the injection molding compound to securely bond the plug to the housing. The separating element is strategically positioned to block harmful penetration paths while maintaining the beneficial sealing function.
Solution Approach 2:
The sealing structure is segmented into multiple functional components: the plug for initial sealing, the separating element for preventing compound penetration, and the injection molding compound for structural bonding. This segmentation allows each component to perform its specific function without interfering with others, particularly protecting the heating device from direct contact with the injection molding compound.
2Adaptability or versatility
If the heating device is arranged inside the fluid line, then the heating function is integrated, but the heating device must be guided out of the fluid line to supply electric energy
Solution Approach 1:
The heating device is merged with the connector housing by guiding it through the outlet opening and securing it in place. The heating device integrates the fluid line heating function with the connector structure, eliminating the need for separate heating components and simplifying the overall system architecture while maintaining electrical connectivity.
3Strength
If the plug is secured by injection molding compound, then the structural integrity is improved, but the injection molding compound can penetrate into the interior of the housing where it is not desired
Solution Approach 1:
The separating element serves as a controlled barrier that manages the interaction between the injection molding compound and the plug. It allows the compound to flow around and secure the plug while preventing uncontrolled penetration into the housing interior, thereby improving manufacturing precision without compromising the strength of the plug securing.
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 solution effectively limits the injection molding compound's application to desired areas, ensuring the seal's functionality and preventing damage to the heating device, while maintaining the connector's structural integrity and preventing urea from freezing at low temperatures.
Implementation Method 1
To apply the injection molding compound, the connector is inserted into a corresponding mold and the injection molding compound is then injected into the mold at an increased temperature and with increased pressure
Implementation Method 2
The separating element can be formed from a material that begins to melt at the temperature at which the injection molding compound is injected into the mold, so that the injection molding compound and the separating element can be fused to one another
Implementation Method 3
The separating element can be formed from a material that begins to melt at the temperature at which the injection molding compound is injected into the mold
Implementation Method 4
When introduced into the injection mold, the injection molding compound has a relatively high temperature. However, it begins to cool as soon as it has been introduced into the injection mold
Data Source
AI summary
A connector for a fluid line having a housing that includes a connecting piece that can be connected to a tube, as well as a connection geometry that can be connected to a mating element. The housing includes an outlet opening arranged in an outlet section through which opening a heating device is guided out of the housing to the outside, wherein the heating device is guided through a plug that is arranged in the outlet opening, and the outlet section is provided with an injection molding compound covering the outlet opening. The connector is provided that a separating element arranged between the injection molding compound and the plug.