Transfer Case Yoke Spline and C-Clip Retention for OEM Compatibility
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Solution Overview
Problem
The existing drivetrain technology faces challenges in producing aftermarket parts that are compatible with various vehicle makes and models, particularly when original equipment manufacturer parts change frequently, requiring continuous updates to match the evolving components.
Innovation Solution
A transfer case output yoke design featuring a hollow cylindrical sleeve with inwardly extending splines and a disc-shaped flange portion, which securely connects to a companion flange using fasteners, allowing for torque transfer and axial movement restriction through a C-clip, ensuring compatibility with specific vehicle models like the 2019 Dodge Rams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If aftermarket parts are produced to match original equipment manufacturer parts, then compatibility with specific vehicle models is improved, but the complexity of continuously updating parts increases
Solution Approach 1:
The yoke design incorporates universal features that allow it to fit multiple vehicle models and transfer case configurations. The hollow cylindrical sleeve with splines can accommodate different output shaft configurations, and the flange portion can be adapted to various companion flange types, reducing the need for model-specific variants.
Solution Approach 2:
The yoke is divided into distinct functional segments: the hollow cylindrical sleeve portion for splined engagement, the flange portion for connection to the companion flange, and the integrated structure connecting these elements. This segmentation allows each portion to be optimized independently while maintaining overall compatibility.
2Strength
If a solid yoke design is used, then structural strength is improved, but weight increases
Solution Approach 1:
The yoke employs a hollow cylindrical sleeve structure instead of a solid construction. This thin-walled hollow design maintains sufficient structural strength for torque transmission while significantly reducing the overall weight of the component.
Solution Approach 2:
The yoke is constructed from high-strength materials that allow the hollow structure to achieve the required mechanical properties. The material selection enables weight reduction while maintaining the strength necessary for drivetrain applications.
Data Source
AI summary
A yoke for a transfer case output shaft includes a hollow cylindrical sleeve portion and a disc-shaped flange portion extending radially from an outer portion of the hollow cylindrical sleeve portion. The hollow cylindrical sleeve portion includes a plurality of inwardly extending splines configured to engage outwardly extending splines of the transfer case outlet shaft. The disc-shaped flange portion has a plurality of fastener openings therethrough that correspond to fastener openings through a flange portion of a companion flange. A notch is formed through the hollow cylindrical sleeve portion at an open end of the hollow cylindrical sleeve portion. A groove is formed within the inner surface of the hollow cylindrical sleeve and extends about a rotation axis of the hollow cylindrical sleeve portion. A C-clip is received within the groove for restricting axial movement along the rotation axis and includes open ends that are received within the notch.