Integrated Ventilation Cover for Wire Harnesses
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Solution Overview
Problem
Conventional wire harnesses for vehicles, such as electric and hybrid cars, have a complex structure due to separate ventilation components, which increases the number of parts and can lead to deformation from temperature changes and foreign matter ingress.
Innovation Solution
A cover member with an exterior tube that integrates ventilation, allowing gas passage while restricting liquid ingress, reducing the number of components by eliminating separate ventilation parts and protrusions, and featuring a frame-like support for a thin ventilation film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate ventilation component is installed on the exterior tube, then ventilation function is achieved, but the number of components increases and structural complexity increases
Solution Approach 1:
The ventilation component is integrated into the exterior tube by forming it as a protruding portion directly on the tube surface. This merging of functions eliminates the need for separate ventilation parts while maintaining the ventilation capability, thus reducing component count and structural complexity
2Reliability
If separate ventilation parts are installed, then ventilation is provided, but protruding parts increase making the structure more complex
Solution Approach 1:
The ventilation function is merged with the exterior tube by forming the ventilation as a protruding portion directly integrated into the tube structure. This eliminates the need for additional separate ventilation parts and reduces the number of protruding elements on the exterior surface
3Device complexity
If a thin ventilation film is used, then flexibility and integration are improved, but the film may wrinkle or deform
Solution Approach 1:
A thin ventilation film is employed as the protruding portion of the exterior tube, leveraging its flexibility to conform to the tube surface while maintaining ventilation functionality. The thin film design allows for better integration while the protruding structure provides support to minimize wrinkling
Solution Approach 2:
The protruding portion serves multiple functions: it provides ventilation while also acting as a support structure for the thin film, eliminating the need for separate support components. This multi-functionality reduces overall complexity while maintaining film integrity
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 integrated ventilation cover member reduces the overall component count, suppresses deformation due to temperature changes, and prevents foreign matter ingress, enhancing the structural simplicity and reliability of the wire harness.
Implementation Method 1
a ventilation film supported by the support and configured to allow passage of gases and restrict passage of liquids
Data Source
AI summary
A cover that includes an exterior tube configured to be attached to a protective tube through which an electrical wire is inserted; and a ventilation formed integrally with the exterior tube and configured to allow passage of gases and restrict passage of liquids, wherein: the exterior tube has a through hole communicating between an inside and an outside of the exterior tube, the ventilation includes a support having an opening and a ventilation film covering the opening of the support, the support is mounted on the exterior tube by being embedded in an inner wall surface of the through hole, and the ventilation is supported by the support around the opening without being embedded in the inner wall surface of the through hole.