Wheel Spacer Disc Centering Structure for Thin Hub Fitment
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Solution Overview
Problem
Existing wheel spacer disks for motor vehicles face challenges in achieving secure and simple centering on wheel hubs, particularly for thin designs, due to manufacturing tolerances and imbalance issues.
Innovation Solution
A wheel spacer disk with a center opening and wheel hub centering elements, featuring wheel centering pins and hub centering elements arranged on the circumferential wall, which project into the center opening to ensure precise centering, and a design that compensates for tolerances through conical orientations and beveled transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a thin wheel spacer disk design is used to achieve track widening, then the aesthetic appearance and vehicle profile are improved, but the centering stability and reliability on the wheel hub deteriorate due to insufficient structural rigidity
Solution Approach 1:
The invention transitions from a purely two-dimensional thin disk design to a three-dimensional structure by adding centering elements that project into the center opening. These elements create additional centering contact points that engage with the wheel hub, providing stability in the axial dimension while maintaining the thin profile in the radial dimension.
Solution Approach 2:
The centering elements act as intermediary structures between the thin wheel spacer disk and the wheel hub. They provide the necessary mechanical engagement and force transmission to ensure reliable centering, bridging the gap between the thin disk design and the hub interface without requiring the disk itself to be thick.
2Ease of operation
If the diameter of the center opening is increased to accommodate the wheel hub centering element, then the ease of installation is improved, but the precision of centering deteriorates due to increased clearance and play
Solution Approach 1:
The centering function is segmented into multiple contact points created by the centering elements projecting into the center opening. Instead of relying on a single large contact surface that would require high precision, the segmentation into discrete elements provides multiple localized contact points that collectively achieve precise centering while accommodating larger dimensional tolerances.
Solution Approach 2:
The invention changes the geometric parameters of the centering interface by adding projecting elements that create new contact surfaces. This allows the center opening to have a larger diameter for ease of installation while the projecting elements maintain precise centering through their specific geometry and engagement characteristics with the hub.
3Reliability
If wheel hub centering elements are added to the wheel spacer disk, then the centering reliability is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The centering elements are merged with the wheel spacer disk as an integrated structure rather than being separate components. This combining of functions into a single piece reduces the number of parts, simplifies assembly, and eliminates the need for additional fasteners or adjustment mechanisms, thereby reducing overall device complexity while maintaining centering reliability.
Solution Approach 2:
The wheel spacer disk is designed with multi-functionality by incorporating centering elements that perform the centering function in addition to the primary function of spacing. This universal design allows a single component to fulfill multiple roles (spacing and centering), reducing the need for separate centering devices and simplifying the overall wheel assembly structure.
Data Source
AI summary
A wheel spacer disk for motor vehicles including a center opening, a plurality of wheel bolt openings and at least two wheel hub centering elements for centering the wheel spacer disk relative to a wheel hub. A diameter of the center opening is greater than a diameter of a centering element of the wheel hub, and at least two wheel centering pins are provided for centering the wheel spacer disk relative to a wheel. The at least two wheel hub centering elements are arranged on a circumferential wall of the center opening, and the at least two wheel hub centering elements project at least partially into the center opening of the wheel spacer disk.