Wheel Bearing Hub Layout for Precise Rim Centering and Sealing
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Solution Overview
Problem
Existing wheel bearing arrangements for motor vehicles face challenges in achieving fast and precise mounting of wheels, often resulting in complex designs that compromise on compactness and sealing efficiency.
Innovation Solution
The proposed wheel bearing arrangement incorporates a rim-centering seat element extending from the wheel hub opposite the brake disc bearing face, combined with a compact seal-receptacle space design that allows the outer ring to engage closely with the wheel flange, and a roller bearing configuration to reduce friction, enabling efficient wheel mounting and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional wheel bearing arrangement is used, then the structure is relatively simple, but the wheel mounting precision and speed are insufficient
Solution Approach 1:
The wheel bearing arrangement is segmented into distinct functional components: the rim-centering seat element for positioning, the seal-receptacle space for sealing, and the roller bearing for rotation. This segmentation allows each component to be optimized independently while maintaining overall simplicity.
Solution Approach 2:
The rim-centering seat element extends in the axial direction (opposite to the brake disc bearing face) rather than radially, utilizing the axial dimension to achieve centering functionality without increasing radial complexity. This dimensional approach enables precise wheel mounting without adding complex radial structures.
2Volume of moving object
If the wheel bearing arrangement is made more compact, then the structure becomes more efficient, but sealing effectiveness may be compromised
Solution Approach 1:
The seal-receptacle space is nested within the wheel flange structure, with the wheel bearing seal positioned in the axial direction between the wheel flange and outer ring. This nested arrangement provides effective sealing within a compact volume by utilizing the existing structural spaces rather than adding external sealing components.
Solution Approach 2:
The wheel bearing seal acts as an intermediary element positioned in the seal-receptacle space, mediating between the wheel flange and outer ring to prevent environmental influences from entering the bearing arrangement. This intermediary sealing approach maintains reliability without requiring additional space.
3Measurement precision
If the rim-centering seat element is added for precise centering, then the mounting precision improves, but the device complexity increases
Solution Approach 1:
The rim-centering seat element serves multiple functions: it provides the rim-centering seat for precise wheel positioning, acts as a structural support component, and defines the axial position of the wheel assembly. This multi-functionality reduces the need for separate centering mechanisms, thereby limiting the increase in device complexity.
Solution Approach 2:
The rim-centering seat element enables self-centering of the wheel during mounting through its geometric design, eliminating the need for complex adjustment mechanisms or additional centering tools. The wheel automatically finds its centered position when mounted on the rim-centering seat, providing self-service centering functionality.
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 facilitates faster, more precise wheel mounting while maintaining a compact and lightweight structure, with enhanced sealing to protect against environmental influences.
Implementation Method 1
the wheel bearing has an outer ring and an inner ring which can rotate with respect to the outer ring about a rotational axis... It is preferably provided as a roller bearing, in particular as a single-row or multirow roller bearing, so that roller bodies are arranged between the inner ring and the outer ring to reduce friction
Data Source
AI summary
A wheel bearing arrangement for a motor vehicle, having a wheel hub and a wheel bearing for rotatably mounting the wheel hub on a wheel carrier. The wheel bearing has an outer ring and an inner ring. A wheel flange extends from the wheel hub in a radial direction and has a brake disc receptacle which is open in the direction facing away from the outer ring and is formed by a recess in the wheel flange and has a brake disc bearing face for a brake disc. A seal-receptacle space is formed in the wheel flange on its side facing the outer ring in an axial direction, in which seal-receptacle space there is a wheel bearing seal. A rim-centering seat element extends from the wheel hub and runs in the direction opposite the brake disc bearing face with respect to the brake disc receptacle.