Deformable Molded Part Sealing for Feedthroughs
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Solution Overview
Problem
Conventional devices for sealed feed-through of elongated molded parts require additional clamping and sealing elements, which are unnecessary and costly, and often fail to achieve a reliable seal.
Innovation Solution
A molded part made of plastically deformable material, such as plastic, with a cap that can be manually deformed to create a radially inward collar for sealing and strain relief, eliminating the need for separate clamping and sealing parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional clamping and sealing elements are used, then sealing reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the clamping function and sealing function into a single integrated molded part. The molded part simultaneously provides structural support, clamping force through its deformable end, and sealing through the interaction between its collar and the long molded part, eliminating the need for separate clamping and sealing elements
Solution Approach 2:
The molded part is designed to perform multiple functions: it provides structural support, enables detachable connection via the cap, achieves clamping through plastic deformation, and creates sealing through the collar interface. This multi-functional design reduces the total number of components needed in the system
2Reliability
If multiple separate components are used for clamping and sealing, then functional requirements are met, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple functional components into a single molded part that is manufactured as one piece. This integration eliminates the need for separate manufacturing processes for clamping elements and sealing elements, reducing total manufacturing cost while maintaining all required functions
Solution Approach 2:
The molded part is designed with specific material properties (plastic deformability) and geometric parameters (collar dimensions, wall thickness variations) that enable it to perform both clamping and sealing functions through controlled deformation, eliminating the need for additional components
3Ease of operation
If manual deformation is used to create the seal, then ease of assembly is improved, but assembly force requirements increase
Solution Approach 1:
The molded part is designed with optimized material properties and geometric parameters that reduce the force required for manual deformation. The plastic deformable material and specific wall thickness design allow the cap to create the sealing deformation through manual application without requiring excessive assembly force
Solution Approach 2:
The molded part is pre-designed with a collar and plastic deformable end section that are prepared in advance to facilitate easy deformation during assembly. This preliminary design enables the sealing action to be achieved simply by applying the cap, without requiring complex assembly procedures or specialized tools
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 device achieves a sealed and strain-relieved passage of long molded parts using only the molded part and cap, reducing costs and ensuring effective sealing without additional components.
Implementation Method 1
the molded part consists of a plastically deformable material, in particular plastic, and that the end of the molded part, to which the cap can be applied, can be plastically deformed or deformed by means of the applied cap
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The device has a mold part (2) i.e. double fitting, provided with a feedthrough channel, where one end of the mold part is attached with or detached from a metal cap (4). The cap has a through-hole (5) coaxially aligned to the feedthrough channel. The mold part is made of a plastic deformable material. The cap is attached to another end of the mold part in such a manner that the latter end is deformed to form a seal and a strain relief when a long form part is fed. A supporting collar (15) is formed of elastomeric material and attached to a peripheral edge of the latter end of the mold part.