Shielding Sleeve Connector Sealing via Press Element
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Solution Overview
Problem
Existing connector parts face challenges in reliably sealing the transition between the plastic housing part and the shielding sleeve, particularly when formed by overmolding, which can lead to moisture penetration and compromised protection against environmental factors.
Innovation Solution
A connector part design incorporating a pressing element and a sealing element, where the sealing element is compressed against the shielding sleeve via the pressing element, providing a reliable seal independent of the plastic housing part's action, and can be integrated through material or surface contact during overmolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the plastic housing part is formed by overmolding the shielding sleeve, then the manufacturing process is simplified and production efficiency is improved, but the sealing reliability at the transition between the plastic housing part and the shielding sleeve deteriorates due to potential capillary gaps
Solution Approach 1:
A sealing element is introduced as an intermediary component between the plastic housing part and the shielding sleeve. This sealing element is compressed by a pressing element to fill and seal the capillary gap that forms during overmolding, thereby maintaining both the simplified overmolding process and reliable sealing without requiring complex modifications to the base overmolding technique.
Solution Approach 2:
The sealing function is segmented from the main overmolding process by introducing a separate sealing element and pressing element assembly. This allows the overmolding process to remain simple and efficient while the sealing function is independently optimized through the dedicated sealing element that can be precisely compressed to eliminate capillary gaps.
2Reliability
If a sealing element is added to seal the transition between the plastic housing part and the shielding sleeve, then sealing reliability is improved, but the device complexity increases
Solution Approach 1:
The sealing element and pressing element are combined into a single integrated assembly that is pre-mounted on the shielding sleeve before overmolding. This merging reduces the number of separate components and assembly steps, thereby improving sealing reliability while minimizing the increase in device complexity.
Solution Approach 2:
The sealing element and pressing element are installed on the shielding sleeve in advance, before the overmolding process begins. This preliminary action ensures that the sealing mechanism is already in place and properly positioned, eliminating the need for additional sealing steps after overmolding and thus reducing overall device complexity while maintaining high sealing reliability.
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
This solution ensures a moisture-tight seal between the plastic housing part and the shielding sleeve, maintaining a predefined degree of protection and moisture resistance without complicating the overmolding process, thus enhancing the connector's reliability and durability.
Implementation Method 1
a sealing element (14) arranged in a receiving device (132) of the press element (13), which is in sealing contact with the shield sleeve (10) for sealing a transition between the plastic housing part (15) and the shield sleeve (10)
Implementation Method 2
the plastic housing part (15) is manufactured by overmolding a section of the shield sleeve (10)
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A connector part (1) comprises an electrically conductive shielding sleeve (10), a plug section (100) situated on the shielding sleeve (10) for plug-connection to an associated mating connector part (3), at least one electrical contact element (120) arranged in or on the plug section (100), and a plastic housing part (15) which at least partially encloses the shielding sleeve (10). A pressing element (13), which is connected to the plastic housing part (15) and has a receiving device (132), is also disposed on the shielding sleeve (10). A seal element (14), which bears sealingly against the shielding sleeve (10) to seal a transition between the plastic housing part (15) and the shielding sleeve (10), is arranged in the receiving device (132) of the pressing element (13). In this manner, a connector part is provided which has a simple structure and is simple to produce and allows the plastic housing part to be reliably sealed off from the shielding sleeve.