Elastomeric Housing Bushing with Partial Cut for Cable Feedthrough
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing housing bushings fail to ensure tightness before cable assembly and often require complex manufacturing processes, with solutions either being expensive or not maintaining tightness after cable removal.
Innovation Solution
A housing bushing design featuring an elastomeric partition with a partial cut or separation that is not full-thickness, allowing for easy assembly and re-sealing, and an alternative using a medium to fill the separation for enhanced tightness before and after cable installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the elastomeric partition is completely punched out to create a cable opening, then cable installation is enabled, but tightness is lost before assembly and after cable removal
Solution Approach 1:
The patent applies partial action by creating a separation that extends only partially through the thickness of the elastomeric partition, rather than completely punching through. This partial separation (extending from the first side but not fully to the second side) allows the partition to tear cleanly during cable installation while maintaining tightness before assembly and after cable removal, as the remaining material keeps the opening closed
2Ease of operation
If the elastomeric partition has a thin point for tearing during cable piercing, then cable installation is facilitated, but manufacturing complexity increases and quality control becomes difficult
Solution Approach 1:
The patent segments the partition thickness into different zones: a first side with a separation that extends partially through the thickness, and a second side that remains intact. This segmentation creates a controlled weak point for tearing without requiring complex thin-point geometries, simplifying manufacturing while enabling easy cable installation
Solution Approach 2:
The separation is pre-formed during manufacturing by cutting or punching only partway through the partition thickness. This preliminary action creates a predetermined tear path that will follow the separation line during cable installation, eliminating the need for complex thin-point designs and ensuring consistent quality
3Ease of operation
If the separation extends through the entire thickness of the elastomeric partition, then cable installation is easier, but tightness cannot be maintained after cable removal
Solution Approach 1:
The separation deliberately does not extend through the entire thickness of the partition. By stopping partway through, the separation maintains enough remaining material to keep the opening closed when no cable is present, thus maintaining tightness duration while still allowing cable installation through the controlled tear path
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 ensures high tightness before assembly, reduces manufacturing complexity, and allows for re-sealing after cable removal, while using inexpensive materials and simple production processes.
Implementation Method 1
the passage opening provided being made by a material-separating method under Generation of a separation is made
Data Source
Figure 1a~1d
Figure 2a~2d
Figure 3a~3d
AI summary
The bulkhead receptacle has frames (1,2) that includes an opening for feedthrough of cable (4). An elastomeric partition wall (3) is provided in cross-section of frame opening, and is provided with passage opening for cable. A detachment element (3-1) is provided in passage opening and extended over the partition wall.