Disk Brake Friction Pad Assembly With Integrated Rotation Stop
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Solution Overview
Problem
Existing disc brake friction pad assemblies with rotation preventing mechanisms increase component count, weight, and manufacturing costs due to complex structures and additional components.
Innovation Solution
A friction pad assembly with a simplified rotation regulating structure integrated into the torque receiving plate, using a cut-and-raised piece or protrusion to engage with the back plate, and a damping layer to reduce noise, allowing for a reduced number of components and lower manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotation preventing mechanism with a rotation regulating plate is used to regulate lining assembly rotation, then rotation regulation is achieved, but the number of components, weight, and manufacturing cost increase
Solution Approach 1:
The rotation regulating plate is merged with the back plate by providing a fitting part that fits into a guide hole formed in the back plate. This integration eliminates the need for separate rotation regulating components while maintaining the rotation regulation function, thereby reducing the number of components and manufacturing cost
Solution Approach 2:
The back plate is given multiple functions: it serves as both the mounting plate for the friction material and as the rotation regulating structure through its guide hole. This multi-functionality reduces the need for additional dedicated rotation regulating components
2Ease of operation
If the abutting curved surface protrudes from the back plate to enable swingable support, then the lining assembly can swing freely, but cutting processing is required and manufacturing cost increases
Solution Approach 1:
Instead of making the abutting curved surface protrude from the back plate, the guide hole is formed directly in the back plate to receive the fitting part. This inverted approach achieves the swingable support function through a recess rather than a protrusion, eliminating the need for complex cutting processing
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables a cost-effective and component-efficient rotation regulating structure that prevents rotation and reduces brake noise, maintaining effective braking performance.
Implementation Method 1
The disc brake device generates a braking force by sliding friction when the torque receiving plate is advanced toward the disc rotor and the lining assembly is pressed against the disc rotor
Implementation Method 2
a damping layer to reduce noise
Data Source
Figure 1
Figure 2(a)~2(c)
Figure 3
AI summary
A lining assembly (15) of this friction pad assembly (100) for a disk brake has a rear plate part (17) fixed to the rear surface of a friction material (29) pressed against a disk rotor, and has, on the rear plate part (17), a plate fitting part (31) which is rockably fitted into a guide hole part (27) of a guide plate (13). The plate fitting part (31) is fitted into the guide hole part (27) so that brake torque generated when the friction material (29) is pressed against the disk rotor is transmitted from the plate fitting part (31) to the guide plate (13). A raised cut piece (37) that restricts the rotation of the lining assembly (15) is integrally formed on a torque receiving plate (11) fixed to the guide plate (13).