Brake Caliper Roller Seat Geometry for Square-End Roller Support
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Solution Overview
Problem
Existing brake caliper housings face challenges in efficiently accommodating rollers with polygonal or enlarged cross-sections, leading to suboptimal surface geometry and increased roller usage variability across different brake assemblies.
Innovation Solution
The brake caliper housing is designed with a transverse wall featuring a roller seat optimized for square-end rollers, with flat abutment surfaces machined to accommodate the rollers' unique geometry, thereby reducing the length of the roller seat and standardizing roller usage across various brake assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional roller seats are used in brake caliper housings, then the design is simple and easy to manufacture, but the surface geometry is suboptimal and does not efficiently accommodate rollers with polygonal or enlarged cross-sections
Solution Approach 1:
The roller seat incorporates localized flat abutment surfaces within its structure, creating regions of different geometric properties. These flat surfaces are specifically positioned to contact the polygonal or enlarged cross-section ends of rollers, providing optimized local geometry for roller accommodation while maintaining the overall simplicity of the roller seat design.
2Reliability
If roller seats are designed to accommodate polygonal or enlarged cross-section rollers, then roller support efficiency is improved, but the roller seat length increases
Solution Approach 1:
Instead of extending the roller seat length in one dimension to accommodate the roller cross-section, the invention utilizes the transverse dimension by incorporating flat abutment surfaces that contact the ends of the roller. This dimensional approach allows efficient accommodation of polygonal or enlarged cross-section rollers without increasing the axial length of the roller seat.
3Ease of manufacture
If standardized roller seats are used across different brake assemblies, then manufacturing consistency is improved, but adaptability to different roller variations is reduced
Solution Approach 1:
The roller seat design with flat abutment surfaces serves multiple functions: it accommodates rollers with circular cross-sections, polygonal cross-sections, and enlarged cross-sections. This universal design allows the same roller seat structure to work with various roller types and variations, providing both standardization for manufacturing and adaptability for different roller configurations.
Data Source
AI summary
A brake caliper housing includes a first end wall; a second end wall disposed opposite the first; a transverse wall that extends from the first end wall to the second; and an interface wall that extends from the first end wall to the second and cooperates with the first and second end walls and the transverse wall to at least partially define a cavity and define a hole sized to receive a cutting tool adapted to machine a surface. A roller seat is defined in the transverse wall and supports a roller having a body with an end having a polygonal cross-section or an enlarged cross-section relative to a diameter of the body. The roller seat has flat abutment surfaces for accommodating the end of the roller.