Floating Brake Rotor Retainer Layout for Low-Profile Disc-Hub Attachment
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Solution Overview
Problem
Existing full floating and semi-floating brake rotor assemblies are burdened by heavy and costly retention components that increase complexity, weight, and axial thickness, necessitating additional clearance in brake design.
Innovation Solution
A floating brake rotor assembly design that secures a disc to a hub using a retainer positioned in grooves on both the disc and hub tabs/spokes, allowing radial movement while maintaining axial stability, thus eliminating the need for heavy retention components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional retention components (connecting pins, clips, threaded bolts) are used to secure the disc to the hub, then the disc is securely attached to the hub, but the assembly weight increases, cost increases, complexity increases, and axial thickness increases
Solution Approach 1:
The patent removes traditional retention components (connecting pins, clips, threaded bolts) from the brake rotor assembly, replacing them with a integrated retention system where the hub itself provides retention functionality through its geometry and interference fit with the disc, thereby eliminating unnecessary weight
Solution Approach 2:
The patent merges the retention function into the hub structure itself, where the hub's cylindrical shape and interference fit with the disc provide both structural support and retention functionality in a single integrated component, eliminating the need for separate retention parts
2Strength
If traditional retention components are used to secure the disc to the hub, then the disc is securely attached, but the number of parts increases and assembly complexity increases
Solution Approach 1:
The patent extracts and removes multiple separate retention components from the assembly, reducing the total part count and simplifying the overall structure while maintaining secure disc-to-hub attachment through the hub's integrated retention geometry
Solution Approach 2:
The patent combines multiple functions (structural support, torque transfer, and retention) into a single hub component, eliminating the need for multiple separate parts and reducing assembly complexity
3Strength
If traditional retention components are used to secure the disc to the hub, then the disc is securely attached, but the axial thickness increases necessitating additional clearance
Solution Approach 1:
The patent removes traditional retention components that add axial thickness, replacing them with an interference fit system where the disc fits directly into the hub with minimal axial clearance requirements
Solution Approach 2:
Instead of using retention components that protrude axially to secure the disc, the patent inverts the approach by having the disc fit into the hub with the retention function provided by the hub's internal geometry, thereby reducing axial thickness
Data Source
AI summary
A floating brake rotor assembly including a hub, a disc and a retainer. The hub includes a plurality of grooves. The disc has a center aperture where the hub is positioned. The disc has a plurality of tabs with each tab having therein a groove and each groove on each tab aligned with a groove hub. The retainer runs through each aligned groove on the hub and each groove on the disc to secure the disc to the hub and to enable the disc to move radially relative to an axle axis.