Glass-Fiber Brake Caliper Guide Cap With Snap-Sealed Retention
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Solution Overview
Problem
Rubber caps for floating brake caliper guides are prone to damage from impacts, accidental removal due to thermal stress or pressure changes, and excessive ease of removal, leading to compromised waterproofness and corrosion.
Innovation Solution
A protective cap made of plastic material reinforced with glass fibers, featuring snap fastening teeth and an O-ring gasket for secure attachment and enhanced sealing, which is irreversible without tool removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If rubber caps are used for floating brake caliper guides, then manual installation and removal is enabled with good seal against water, but the caps are easy to damage from impacts and prone to accidental removal
Solution Approach 1:
The cap is made from a composite material consisting of a rigid plastic body (polypropylene or polyamide) reinforced with an elastomeric material. This composite structure provides both the durability and impact resistance of rigid plastic and the sealing properties of elastomer, while the integrated design prevents accidental removal
Solution Approach 2:
The invention changes the material parameters from pure rubber to a composite of rigid plastic and elastomer. This parameter change increases the cap's resistance to impacts and deformations while maintaining sealing capability through the elastomeric component
2Reliability
If rubber caps are used for floating brake caliper guides, then waterproof seal is provided, but the caps are prone to deformation from thermal stress or pressure surges
Solution Approach 1:
The composite structure combines rigid plastic for structural stability against thermal stress and pressure with elastomeric material for maintaining the waterproof seal. The rigid framework resists deformation while the elastomer accommodates dimensional changes and maintains sealing contact
Solution Approach 2:
The cap is divided into functional zones: a rigid plastic body for structural integrity and resistance to thermal/pressure stress, and an elastomeric sealing portion for maintaining waterproof contact. This segmentation allows each material to perform its optimal function
3Ease of operation
If rubber caps are used for floating brake caliper guides, then ease of manual removal is achieved, but the caps are easily removed unintentionally during maintenance
Solution Approach 1:
The cap features a dynamic retention system where elastomeric arms can flex and deform to allow intentional removal by applying force in a specific direction, but the same elasticity provides continuous retaining force to prevent accidental removal during normal operations or maintenance
Solution Approach 2:
The retention mechanism utilizes controlled deformation of the elastomeric material. The cap is designed to deform under deliberate removal force but maintains sufficient elastic retention force under normal conditions, creating a threshold-based retention system
Data Source
AI summary
A protective cap for floating brake caliper guides may have a cup-like body intended to be associated with a floating brake caliper closing a sliding seat of a guide of the floating caliper. The cup-like body is made of plastic material reinforced with glass fibers.