CV Joint Flange Assembly With Conductive Interface for Heat Transfer
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Solution Overview
Problem
CVJ assemblies in vehicles often have non-optimal interfaces with inadequate areas of contact between the CVJ, flange, and fasteners, leading to suboptimal heat transfer and potential degradation due to factors like low production volumes and packaging constraints.
Innovation Solution
A joint assembly with a constant velocity joint featuring a weld seat, a flange component with a weld seat projection, and a conductive component made of thermally conductive materials like resin or graphite, joined via fasteners, magnetic arc welding, or friction welding, to enhance heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the contact area between CVJ, flange, and fasteners is increased to improve heat transfer, then heat transfer efficiency improves, but device complexity and manufacturing difficulty increase due to packaging constraints and production volume limitations
Solution Approach 1:
A thermally conductive component is introduced as an intermediary element between the CVJ outer race and the flange component. This mediator enhances heat transfer pathways without requiring increased contact area between the primary mating surfaces, thus improving thermal management while maintaining simple mechanical interfaces suitable for high-volume production
Solution Approach 2:
The flange component or associated hardware is constructed using composite materials with enhanced thermal conductivity. This allows the same geometric interface to transfer heat more efficiently without increasing contact area or mechanical complexity, resolving the contradiction between thermal performance and manufacturing simplicity
2Device complexity
If welding is used to couple the CVJ and flange to reduce parts and simplify assembly, then device complexity reduces, but heat transfer capability deteriorates due to reduced contact area
Solution Approach 1:
The welding process incorporates thermally conductive materials or coatings at the interface, creating a composite joint that maintains the structural integrity and simplicity of welded construction while enhancing thermal conductivity. This allows weldment simplicity to be preserved without sacrificing heat transfer capability
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
Improves heat transfer efficiency and reduces degradation by maintaining the CVJ assembly temperature below a threshold, ensuring optimal performance and longevity.
Implementation Method 1
a conductive component that joins the outer race and the flange component at an interface between the outer race and a second side of the flange component... thermal conductive resin and/or a thermal conductive insert material that conducts from an interface between an outer race and a flange component
Data Source
AI summary
The following description relates to a constant velocity joint (CVJ) included in a greater joint assembly. The joint assembly comprises: a CVJ having an outer race with a weld seat; a flange component with a weld seat projection on a first side, where the weld seat projection is configured to mate with the weld seat of the outer race; a conductive component that joins the outer race and the flange component at an interface between the outer race and a second side of the flange component, opposite the first side; and a shaft component drivingly coupled to the constant velocity joint, where the constant velocity joint is received by and drivingly coupled to the shaft component at the weld seat of the outer race.