Floating Disc Brake Cylinder Unit Strength Member Design
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Solution Overview
Problem
Existing disc brake devices face issues with insufficient strength of the slide pin during high-speed braking and uneven wear of brake pads due to the configuration where the cylinder and support are integrally formed, leading to concerns about the slide pin's strength and pad wear.
Innovation Solution
A floating type disc brake device is designed with a separate body, support, and cylinder unit, where the cylinder unit is fixed to arm portions on both sides of the rotor via cylinder attachment portions on the outer circumference, allowing the cylinder unit to act as a strength member, reducing the load on the slide pin and improving durability, while allowing for a thin and light support structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cylinder and support are integrally formed, then the structural simplicity is improved, but the strength of the slide pin becomes insufficient during high-speed braking
Solution Approach 1:
The brake device is divided into separate components: the support, the body, and the cylinder unit. The support and body are separated, with the body having a different configuration from traditional designs. This segmentation allows each component to be optimized independently, resolving the contradiction between structural simplicity and slide pin strength.
Solution Approach 2:
The cylinder unit is extracted as a separate component that can be fixed to the support in a specific configuration. This allows the cylinder to be positioned optimally relative to the rotor and brake pads, improving the overall strength distribution without requiring a complex integrated design.
2Ease of manufacture
If the brake pad is supported by a slide pin in a hung configuration, then the ease of manufacture is improved, but uneven wear occurs on the brake pad
Solution Approach 1:
The body is divided into inner and outer portions with a specific configuration that allows the brake pads to be supported in a more balanced manner. This segmentation enables better load distribution across the brake pads, preventing uneven wear while maintaining manufacturing simplicity.
3Weight of moving object
If the support is made thin and light, then the weight is reduced, but the strength becomes insufficient
Solution Approach 1:
The support structure is segmented and reconfigured with the body having inner and outer portions. This allows the support to be made thinner and lighter while the overall structural strength is maintained through the optimized configuration of separate components.
Solution Approach 2:
The brake device uses different materials for the support and body components, allowing each to be optimized for its specific function. This enables weight reduction in the support while maintaining overall strength through material selection and configuration.
Data Source
AI summary
A floating type disc brake device in which a body, a support and a cylinder unit are configured separately, and a first piston and a second piston are accommodated in the cylinder unit, wherein the cylinder unit is fixed to arm portions provided on both the rotation-in side and the rotation-out side of a rotor in the support via cylinder attachment portions disposed on the outer circumference side of the cylinder unit.