Disk Brake Adjustment Mechanism With Cardanic Coupling Ring
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Solution Overview
Problem
Existing vehicle disk brake adjustment devices are complex and costly due to the number of components required for precise readjustment, with a need for cost-effective simplification while maintaining reliability and avoiding canting of elements.
Innovation Solution
A simplified adjustment device design featuring a cardanic pivot bearing with a deformable rubber or elastomer ring and steel rings, along with a coupling ring with conical surfaces and ramps, which reduces the number of components and enhances self-alignment and sealing, allowing for cost-effective production and easy resetting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a traditional cardanic pivot bearing with multiple steel rings and elastic material is used, then self-alignment capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the cardanic pivot bearing and coupling ring into a single integrated component. The coupling ring directly performs both the coupling function and the cardanic pivot bearing function, eliminating the need for separate steel rings and elastic material layers, thus reducing component count while maintaining self-alignment capability through the conical surface geometry
Solution Approach 2:
The coupling ring is designed to serve multiple functions simultaneously: it acts as both the coupling element and the cardanic pivot bearing. The conical annular surface provides both the coupling interface and the self-aligning pivot function, making the component universal and reducing overall device complexity
2Ease of operation
If conventional coupling structures are used, then rotational connection is achieved, but inadvertent resetting may occur due to insufficient rotational resistance
Solution Approach 1:
The coupling structures feature asymmetric conical ramps with different flank angles. The first flank has a smaller angle providing lower rotational resistance for intentional resetting, while the second flank has a larger angle providing higher rotational resistance to prevent inadvertent resetting. This asymmetric design allows the same structure to provide both ease of operation and reliability
3Reliability
If traditional adjustment devices are used, then readjustment function is achieved, but manufacturing cost is high due to multiple components
Solution Approach 1:
The patent combines multiple traditional components (cardanic pivot bearing, coupling ring, steel rings, elastic material) into a single integrated coupling ring component. This merging reduces the number of parts that need to be manufactured, assembled, and quality-checked, thereby reducing manufacturing cost while maintaining the readjustment precision through the preserved functional geometry
Solution Approach 2:
The invention changes the geometric parameters of the coupling ring, specifically incorporating conical annular surfaces with specific flank angles optimized for both readjustment precision and rotational resistance. This parameter optimization allows the simplified single-component design to achieve the same functional performance as the traditional multi-component design
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 achieves a cost-effective and reliable adjustment mechanism with reduced components, ensuring precise readjustment and protection from environmental influences, while preventing inadvertent resetting through the use of a one-way coupling with elevated rotational resistance.
Implementation Method 1
a cardanic pivot bearing which is capable of self-aligningly supporting the shaft in an opening of the housing, which consists at least of a deformable rubber or elastomer ring
Implementation Method 2
the steel ring is slide-moveably supported against a cylindrical bearing section of the shaft
Data Source
AI summary
The invention relates to an adjustment mechanism for a vehicle disk brake, which is provided with an adjustment device for compensating the operation-induced wear on the brake linings and the brake disk, wherein the adjustment device has the following components: —a drive element (25) which is rotatably arranged within the housing of the disk brake on an axis (A) parallel to the axis of rotation of the brake disk and which can be set in rotation by a brake application device; —a shaft (40) which is arranged centrally on the axis (A), on which the drive element (25) is rotatably mounted; —a cardanic rotary bearing (45) which supports the shaft (40) in an opening (1A) of the housing in a pendulum-like manner and which is made at least partially of a deformable rubber or elastomer ring (46) and a steel ring (47) which is attached therein. In order to further develop the mentioned adjustment mechanism so that it can be produced more economically and requires only a small number of components, the steel ring (47) is supported in a sliding manner against a cylindrical bearing section (50) of the shaft (40), and a coupling consisting of a first coupling part (51), which is rotationally fixed to the shaft (40), and a second coupling part (52), which is rotationally fixed to the steel ring (47), is arranged on the axis (A), the second coupling part being a coupling ring (52) which is rotatably mounted on the shaft (40). The invention further relates to a corresponding cardanic rotary bearing (45) and a corresponding coupling ring (52).