Concave Blocking Face Lock Nut for Compact Brake Caliper Systems
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Solution Overview
Problem
Existing nut designs for brake caliper systems require additional space and material due to collars for blocking rotation, and modifications to the piston and screw are often necessary when altering nut geometry, leading to inefficiencies in space and material usage.
Innovation Solution
A nut design featuring a concave blocking face and a spherical transmission face with grooves that share a common edge, allowing for reduced size and improved force distribution, while also facilitating brake fluid flow and easier machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a collar is added to block rotation of the nut, then the rotation blocking function is improved, but the piston volume increases
Solution Approach 1:
The blocking face and transmission face are merged into a single continuous surface without interruption, eliminating the need for a separate collar structure. This integration allows the nut to block rotation and transmit force simultaneously while maintaining a compact design that fits within the existing piston volume.
Solution Approach 2:
The blocking face is designed to serve multiple functions: it blocks rotation of the nut along the longitudinal axis, transmits force directed along the axis, and provides a common edge with the transmission face to eliminate space. This multi-functionality replaces the need for separate collar and transmission components.
2Reliability
If the nut geometry is modified to improve function, then the performance is improved, but the screw and piston also need to be modified
Solution Approach 1:
The nut is segmented into distinct functional zones: a blocking face for rotation blocking, a transmission face for force transmission, and grooves for fluid flow. This segmentation allows each zone to be optimized independently while maintaining compatibility with existing screw and piston geometries, avoiding system-wide modifications.
Solution Approach 2:
Different regions of the nut are given different geometric properties: the blocking face is concave for rotation blocking, the transmission face is spherical for force distribution, and grooves are added for fluid flow. These localized geometric modifications improve nut function without requiring changes to the overall screw or piston geometry.
3Length of moving object
If the blocking face and transmission face share a common edge, then the nut thickness is reduced, but the manufacturing complexity increases
Solution Approach 1:
The transmission face is given a spherical shape with a common edge with the blocking face. This curvature allows the two faces to meet smoothly without sharp transitions, reducing the nut thickness while maintaining manufacturability through standard spherical machining operations.
Solution Approach 2:
The blocking face is designed as a concave surface rather than a flat face, creating a three-dimensional geometry that shares a common edge with the transmission face. This dimensional approach allows the faces to intersect smoothly, reducing overall nut thickness while maintaining ease of manufacturing through conventional machining methods.
Data Source
AI summary
A longitudinal end of the nut has:at least one blocking face forming a means for blocking a rotation of the nut along a longitudinal axis of the nut, andat least one transmission face forming a means for transmitting a force directed along the axis.The blocking face or at least one of the blocking faces and the transmission face or at least one of the transmission faces have at least one common edge, and the blocking face or at least one of the blocking faces is concave.