Closed Frame Brake Retainer for Click Noise Reduction
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Solution Overview
Problem
Existing disc brakes with pull suspension suffer from functional and manufacturing play issues, leading to 'reversing click' noises and reduced comfort due to complex tolerances required between the holder and lining, which are unavoidable.
Innovation Solution
The holder is designed as a closed frame with interconnected holder webs that distribute force flow evenly, eliminating the need for complex tolerances and allowing all holder arms to participate in force introduction, while a two-point support system with hammer-head-shaped claws provides stable and vibration-resistant support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the holder is designed with separate holder arms requiring precise tolerances for guide and support surfaces, then the friction lining can be properly supported and guided, but functional and manufacturing play causes reversing click noises and reduced comfort
Solution Approach 1:
The patent merges the separate holder arms into a closed frame structure where all holder arms are interconnected through holder webs. This integration allows the entire holder frame to participate in force distribution and lining support, eliminating the need for extremely precise tolerances between individual guide surfaces while preventing reversing click noises through stable, play-free support.
Solution Approach 2:
The closed frame holder is segmented into multiple holder arms connected by holder webs, where each arm can independently support friction linings. This segmentation allows force to be distributed across multiple contact points while maintaining overall structural rigidity, reducing the impact of any single point's manufacturing variations.
2Device complexity
If only one holder arm directly introduces force to the friction lining, then the structure is simpler, but the carrying capacity is limited and material cannot be optimized
Solution Approach 1:
The patent combines all holder arms into a unified closed frame structure where force introduced at any point is distributed throughout the entire frame via the interconnected holder webs. This allows multiple holder arms to simultaneously participate in force introduction and support, increasing carrying capacity while maintaining structural efficiency.
3Ease of manufacture
If the holder arms are not interconnected, then manufacturing is easier, but the force flow is not distributed evenly and structural integrity is reduced
Solution Approach 1:
The holder arms are merged into a closed frame structure through holder webs, creating a rigid, interconnected assembly that distributes force flow evenly across all arms. This integration enhances structural integrity and stability while the modular design of the frame allows for relatively straightforward manufacturing and assembly.
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
This design reduces 'click' noises, residual torque, and friction lining wear, enhances the brake's vibration resistance, and simplifies assembly and maintenance, while maintaining structural integrity and precision.
Implementation Method 1
the introduction of a tangentially directed circumferential force (Fu, frictional force) in de n holder induces a tensile stress in a claw (7, 8) or vice versa
Implementation Method 2
at least one associated friction lining (1) via a back plate (5), which carries friction material (6)... the introduction of a tangentially directed circumferential force (Fu, frictional force)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a motor-vehicle partially lined disk brake of the sliding-caliper type, having a housing including an actuator system as a standard force generator, which housing is mounted on a retainer in a movably guided manner, and having at least one friction pad designed in a hammer-head shape having claws (7, 8), which friction pad is held with pull support in a guided manner in the retainer in retainer arms having holding recesses. In order to avoid reversing clicks, the retainer according to the invention is designed as a closed frame, in that retainer webs connect the retainer arms to each other, and that the retainer webs are placed tangentially in front of the housing legs of the housing. Therefore, the force flow in the retainer is closed, and, in the case of pull suspension, all the retainer arms are nevertheless included in the force flow.