Brake Pad Sensor Mounting Without a Slotted Backplate
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Solution Overview
Problem
Existing brake assemblies with sensor units face challenges in securely mounting the sensor units to the backplate of the brake pad assembly without requiring a slot in the backplate, which can increase costs and compatibility issues.
Innovation Solution
The brake assembly incorporates a sensor unit that straddles the backplate and extends from the backplate to the pad spring, providing secure retention without the need for a slot in the backplate, and includes features like a coil member for improved durability and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor unit is mounted to the backplate using a slot, then the sensor unit can be securely retained, but the manufacturing cost increases and compatibility with various backplate designs is reduced
Solution Approach 1:
The sensor unit is nested within a recess formed in the backplate, with the sensor unitStraddling the backplate and extending from one surface to the other surface. The recess receives and retains the sensor unit without requiring a slot through the backplate, achieving secure retention while maintaining backplate integrity and compatibility
Solution Approach 2:
Instead of creating a slot (one-dimensional cut) through the backplate, the solution uses a recess (three-dimensional cavity) formed in the backplate. This dimensional change allows the sensor unit to be retained securely without compromising the backplate structure or requiring costly slot modifications
2Reliability
If the sensor unit extends from the backplate to the pad spring, then the sensor unit is securely retained during braking, but the device complexity increases
Solution Approach 1:
The sensor unit is merged with the pad spring assembly, where the sensor unit extends from the backplate to the pad spring. This integration allows the sensor unit to be retained securely during braking without requiring separate retention mechanisms, reducing overall device complexity
Solution Approach 2:
The sensor unit serves multiple functions: it is retained by the recess in the backplate, extends to the pad spring for positioning, and remains secure during braking. This multi-functional design eliminates the need for separate retention features, simplifying the overall structure
Data Source
AI summary
A brake assembly that includes a brake pad assembly, a pad spring, and a sensor unit. The brake pad assembly includes friction material disposed on a backplate. The pad spring is mounted to the backplate. The sensor unit straddles the backplate and extends from the backplate to the pad spring.