Brake Tie Bar Decoupling Piston Vibration Transfer
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Solution Overview
Problem
Existing brake systems, such as floating and fixed caliper systems, suffer from vibrations, noise, and harshness (NVH) during braking conditions due to the transfer of these phenomena from brake pads to other components, necessitating a solution that decouples brake pads from pistons and other components to mitigate these issues.
Innovation Solution
Incorporation of a tie bar within the brake system that allows brake pads to rotate independently, utilizing shims with tie bars and open spaces to create a single point or region of contact between the piston and the brake pad, thereby decoupling the brake pad's movement from the piston and preventing the transfer of vibrations and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If brake pads are directly connected to pistons in floating or fixed caliper systems, then braking force is effectively transmitted, but vibrations, noise, and harshness are transferred from brake pads to other components
Solution Approach 1:
The brake pad assembly is segmented into multiple independent components: the brake pad itself, the shim, and the tie bar. This segmentation allows the brake pad to move and rotate independently while maintaining braking force transmission through the tie bar connection to the piston, thereby isolating vibration and noise transfer paths.
Solution Approach 2:
The tie bar acts as an intermediary element between the brake pad and the piston. It transmits the braking force while allowing relative movement and rotation, serving as a mediator that decouples the direct rigid connection that would otherwise transfer harmful vibrations and noise directly to the piston and caliper system.
2Stability of the object's composition
If brake pads are rigidly connected to pistons, then structural stability is maintained, but brake pad movement is constrained causing increased noise and vibration
Solution Approach 1:
The connection between the brake pad and piston is transformed from a static rigid connection to a dynamic articulated connection through the tie bar. The tie bar allows the brake pad to rotate and move dynamically during braking operations while maintaining structural integrity, thus reducing noise and vibration caused by constrained movement.
3Object-generated harmful factors
If a decoupling mechanism is introduced to allow brake pad independence, then noise and vibration are reduced, but device complexity increases
Solution Approach 1:
The tie bar integrates multiple functions into a single component: it connects the brake pad to the piston for force transmission, allows rotational movement for decoupling, and provides structural support. This merging of functions reduces the overall complexity compared to using separate components for each function.
Solution Approach 2:
The tie bar serves multiple purposes simultaneously: it is both a structural connector and a decoupling mechanism, enabling both force transmission and movement independence. This multi-functionality eliminates the need for additional separate components, thereby managing system complexity while achieving the desired noise and vibration reduction.
Data Source
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AI summary
A brake component comprising: (a) one or more tie bars, and (b) one or more open spaces on each side of the tie bar, wherein during a brake apply the one or more tie bars each allow a brake pad to rotate into the open spaces of the brake component while the tie bar remains an only point of contact of the brake component.