Brake Disc Drive Insert Retainer Without Rivet Stress
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Solution Overview
Problem
Existing wheel brake systems face issues with mechanical stresses on brake discs due to rotor drive keys, leading to potential failure and compromise of attachment, especially with the use of rivets which can cause fatigue and stress concentrations.
Innovation Solution
A drive insert is designed with clips and a retainer that mechanically couple with the brake disc without requiring fasteners, securing the drive insert in radial, axial, and tangential directions, thereby protecting the brake disc from mechanical stresses and eliminating the need for rivets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rivets are used to secure the drive insert to the brake disc, then the attachment is secured, but fatigue and stress concentrations occur leading to potential failure
Solution Approach 1:
The patent removes rivets from the attachment system entirely. The drive insert is secured to the brake disc through a rivetless mechanism where the insert engages with drive slots and is retained by clips and retainers that distribute stresses without penetrating fasteners, thereby eliminating the harmful fatigue and stress concentrations associated with rivet holes
Solution Approach 2:
The patent introduces drive slots as an intermediary structural feature in the brake disc that enables the drive insert to engage and be secured without direct rivet penetration. The slots work配合 with clips and retainers to create a rivetless attachment system that maintains security while avoiding stress concentrations
2Reliability
If rivets are used to attach the drive insert, then the drive insert is secured, but the brake disc surface integrity is compromised
Solution Approach 1:
The patent eliminates rivets from the attachment system, removing the need for holes through the brake disc surface. The drive insert is secured through a rivetless mechanism using drive slots and retaining clips that maintain the continuous surface integrity of the brake disc while achieving secure attachment
3Object-affected harmful factors
If a rivetless attachment system is used, then fatigue and stress concentrations are eliminated, but the attachment mechanism becomes more complex
Solution Approach 1:
The patent divides the attachment function into multiple discrete components: drive slots in the brake disc, clips that engage with the drive insert, and retainers that secure the clips. This segmentation allows each component to perform a specific function and distributes the attachment complexity across multiple simple, standardized parts rather than requiring a single complex fastening mechanism
Data Source
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AI summary
In some examples, a drive insert comprises a first clip, a second clip, and a retainer. The first clip is configured to be slidable over a first surface adjacent to a first drive slot of a brake disc in a first tangential direction of the brake disc. The second clip is configured to be slidable over a second surface adjacent to a second drive slot of the brake disc in a second tangential direction of the brake disc. The retainer is configured to be slidable over the first clip and the second clip when the first clip and second clip are positioned one the brake disc secure the first and second clips to the brake disc.