Brake Caliper Guide Pin Threaded Coupling for Leak-Safe Assembly
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Solution Overview
Problem
Existing floating-type brake caliper guides require complex production steps, are costly, and have assembly challenges due to undercut fits that can lead to assembly errors and potential leakage, necessitating frequent inspections.
Innovation Solution
A guide pin and guide sleeve with a threaded coupling that eliminates the need for groove formation on the guide pin, allowing a simple, safe, and durable connection, reducing production costs and simplifying assembly and maintenance by enabling concurrent coupling with the bracket and caliper body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an undercut fit connection is used between guide pin and guide sleeve, then protection against environmental factors is improved, but assembly complexity and potential for assembly errors increase
Solution Approach 1:
A guide is introduced as an intermediary component between the guide pin and guide sleeve. This guide includes a guide pin receiving portion that receives the guide pin and a guide sleeve receiving portion that receives the guide sleeve, creating a standardized interface that mediates the connection between these components.
Solution Approach 2:
The connection system is segmented into distinct functional components: the guide pin, the guide sleeve, and the guide structure. This segmentation allows each component to be optimized independently and assembled through a standardized interface, reducing assembly complexity while maintaining protective functionality.
2Reliability
If groove formation on guide pin is required for guide sleeve connection, then connection durability is improved, but production costs and manufacturing steps increase
Solution Approach 1:
The guide structure serves as an intermediary that provides the connection interface between guide pin and guide sleeve. Instead of requiring complex groove formation on the guide pin, the guide provides a standardized receiving portion that simplifies manufacturing while ensuring durable connection through proper structural design.
Solution Approach 2:
The complex groove formation requirement is extracted from the guide pin design and transferred to the guide structure. This allows the guide pin to be manufactured as a simpler component while the guide structure incorporates the necessary features for durable connection.
3Productivity
If threaded coupling is used between guide pin and guide sleeve, then assembly time is reduced, but connection strength may be compromised
Solution Approach 1:
The guide structure acts as an intermediary that combines threaded coupling with a robust structural design. The guide pin receiving portion and guide sleeve receiving portion are configured to work together, providing both the ease of threaded assembly and the structural strength needed for durable connection.
Data Source
AI summary
A guide pin for a floating-type brake caliper of a disc brake where the brake caliper may have a caliper body and a bracket. The guide pin may be configured to be placed between the caliper body and the bracket. The guide pin is configured to connect to a guide sleeve and slide at least partially within the guide sleeve. The guide pin may have a first pin coupling portion. The guide pin may also have a pin sliding portion to guide the guide pin into a sliding housing formed in either the caliper body or the bracket. The guide pin may also have a second pin coupling portion. The first pin coupling portion is arranged between the second pin coupling portion and the pin sliding portion. The first pin coupling portion is threaded to form a threaded coupling between the guide pin and the guide sleeve.