Modular Cable Bulkhead Sealing with Separable Half-Plates
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Solution Overview
Problem
Existing bulkhead crossing devices for electrical harnesses are difficult to modulate, have limited sealing and insulation due to material deformation, and are challenging to install, requiring large holes for bundles of cables, which is not satisfactory for noise and thermal insulation in the automotive field.
Innovation Solution
A modular device comprising separable assemblies with an external sealing lip and sound insulation components, allowing adaptation to various harness sizes and numbers, with a clipping system for easy installation and improved airtightness and soundproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bulkhead crossing devices are used, then the electrical harness can pass through the partition, but the sealing and insulation are relatively low due to material deformation
Solution Approach 1:
The device is divided into multiple separable half-plates (first and second sets) that can be assembled around the electrical harness. This segmentation allows the device to adapt to different harness sizes without significant deformation, maintaining sealing quality while avoiding the material deformation issues of conventional single-piece designs.
Solution Approach 2:
The device uses adjustable parameters including the number and arrangement of half-plates, the size of the opening, and the inclusion of optional sound insulation assemblies. These parameter changes enable the device to maintain optimal sealing and insulation performance across various harness configurations without suffering from material deformation.
2Productivity
If conventional bulkhead crossing devices are used, then the electrical harness can pass through, but the installation is difficult and time-consuming
Solution Approach 1:
The device consists of separable half-plates that can be easily assembled around the electrical harness during installation. This segmentation enables quick assembly without requiring complex tools or procedures, significantly improving installation speed and ease of operation compared to conventional single-piece devices.
Solution Approach 2:
The device incorporates flexible and adaptable components including optional sound insulation assemblies that can be added or removed based on specific installation requirements. This dynamic configuration allows the device to be quickly adapted to different situations without increasing installation complexity.
3Adaptability or versatility
If conventional bulkhead crossing devices are used, then a hole must be large enough to pass cable boxes, but this reduces sealing and insulation performance
Solution Approach 1:
The device uses multiple separable half-plates that can be configured in different arrangements to accommodate various harness sizes and cable box configurations. This segmentation allows the opening to be precisely fitted to the harness without requiring excessive clearance, thereby maintaining sealing and insulation performance while achieving high adaptability.
Solution Approach 2:
The device is designed as a universal solution that can accommodate different electrical harness configurations through its adjustable half-plate arrangement and optional sound insulation assemblies. This multi-functionality allows a single device design to adapt to various harness sizes without compromising sealing quality.
4Weight of stationary object
If conventional bulkhead crossing devices are used, then the device can be made of limited materials, but the mass is relatively high
Solution Approach 1:
The device is divided into separable half-plates and optional sound insulation assemblies, allowing selective use of materials with different properties. This segmentation enables the use of lighter materials while maintaining the required adaptability and sealing performance, reducing the overall device mass compared to conventional single-piece designs.
Solution Approach 2:
The device can incorporate composite constructions combining different materials including the half-plates and optional sound insulation assemblies. This use of composite materials allows optimization of the weight-to-performance ratio, achieving high adaptability and sealing quality with reduced mass.
Data Source
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AI summary
The invention relates to a bushing device (1) for a wiring harness (8) passing through an opening (9) of a partition (7), comprising at least one first assembly (2) having: a hollow inner portion (10) with a tubular profile; a outer portion, coaxial with the inner portion, comprising an outer sealing lip (12) intended for resting peripherally around and against an insulator (6) placed in the periphery of the opening (9), said first assembly being made up of two first half-plates (2A, 2B). According to the invention, the device comprises a second assembly (4), made up of two second separable half-plates (4A, 4B), which are capable of closing around the wiring harness.