Symmetrical Brake Caliper Dust Boot for Error-Proof Assembly
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Solution Overview
Problem
Existing dust boots for brake calipers require precise orientation during assembly, leading to increased assembly costs and a risk of incorrect fitting, and they are not optimized for compact brake caliper designs.
Innovation Solution
A symmetrical dust boot design with a wavy wall and radially outer portion that allows assembly on the piston from any side, ensuring correct positioning with the brake caliper body without the need for orientation checks, reducing material usage and axial volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a symmetrical dust boot design is used, then assembly is simplified and orientation checks are eliminated, but the positioning precision with the brake caliper body may be compromised
Solution Approach 1:
The dust boot incorporates an asymmetric feature in the form of a的定位 structure (positioning structure) that includes a protrusion on the dust boot and a corresponding recess on the brake caliper body. This asymmetric design allows the dust boot to be symmetrically mounted on the piston while ensuring correct orientation relative to the brake caliper body through the complementary shapes of the protrusion and recess.
2Manufacturing precision
If traditional dust boot geometry is used, then positioning with brake caliper body is ensured, but assembly cost increases due to orientation verification requirements
Solution Approach 1:
The dust boot design incorporates self-positioning features where the symmetric mounting on the piston automatically ensures correct orientation relative to the brake caliper body. The positioning structure (protrusion and recess) provides self-alignment, eliminating the need for manual orientation verification during assembly, thereby reducing assembly costs while maintaining positioning precision.
3Manufacturing precision
If dust boot is designed for single-side assembly, then correct positioning is ensured, but the risk of incorrect assembly remains
Solution Approach 1:
The positioning structure uses asymmetric geometry (protrusion on dust boot matching recess on brake caliper body) to ensure that even though the dust boot can be mounted symmetrically on the piston from either side, only the correct orientation relative to the brake caliper body will allow proper engagement of the positioning features, thereby eliminating incorrect assembly.
4Loss of substance
If symmetrical dust boot design is implemented, then material usage is reduced, but the axial volume of brake caliper may increase
Solution Approach 1:
The dust boot is designed with a symmetric geometry that allows it to be mounted on the piston without requiring additional material for asymmetric features. The positioning structure is integrated into the existing dust boot geometry rather than adding separate components, thereby reducing material usage while maintaining compact axial volume through efficient space utilization.
Data Source
AI summary
A dust boot (300) is described, arranged to be coupled to a brake caliper, in which the dust boot (300) has an annular shape defining an axis (x) and comprises:a radially outer portion (302) having a shape symmetrical to a diametrical plane (P) of the dust boot, which is adapted to be engaged to a seat made in a body of the brake caliper;a wall (304) extending from the outer portion towards the axis (x) of the dust boot.A brake caliper is further described.