Omni Wheel Roller Bracket Assembly for Low-Vibration Running
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Solution Overview
Problem
Omni wheels suffer from noise and vibration issues due to their complex structure and large gaps between rollers, leading to poor running stability, especially in multi-row configurations, and high production costs in single-row designs.
Innovation Solution
The omni wheel design incorporates a hub bracket with a single roller bracket connecting two rollers, featuring a second shaft with a limiting portion to ensure axial stability, reducing gaps and vibrations through a locking mechanism that secures the second roller structure, forming a full-circle roller configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If multiple rows of alternately arranged small rollers are used to form a consistent projection, then the tire tread consistency is improved, but the structure becomes complex and production cost increases
Solution Approach 1:
The omni wheel is divided into multiple roller components, each containing a roller bracket with two rollers. This segmentation allows the complex multi-row structure to be broken down into manageable modular units that can be assembled systematically, reducing overall structural complexity while maintaining the consistent projection pattern.
Solution Approach 2:
Two rollers are combined into a single roller bracket assembly, forming an integrated roller component. This merging reduces the number of separate parts and simplifies the overall structure while still achieving the desired consistent tire tread projection pattern through the alternating arrangement of these components.
2Shape
If multiple rows of alternately arranged small rollers are used, then the tire tread consistency is improved, but the assembly becomes complicated
Solution Approach 1:
The roller bracket assembly is designed as a segmented modular unit containing two rollers that can be manufactured separately and then assembled together. This segmentation enables standardized production of individual roller components that can be easily assembled into the complete omni wheel structure.
Solution Approach 2:
The roller bracket is pre-assembled with two rollers attached before being installed into the complete omni wheel structure. This preliminary assembly action simplifies the final assembly process by reducing the number of separate assembly steps required and enabling modular installation of complete roller units.
3Shape
If a large roller and small roller share one bracket, then the gap between rollers is reduced, but the omni wheel still generates noise and vibrations
Solution Approach 1:
The roller bracket is designed with differentiated local structures: a first supporting portion and a second supporting portion that provide localized support and positioning for the rollers. This local quality differentiation ensures proper spacing and alignment of rollers while reducing gaps, and the specific structural features at these locations help minimize noise and vibrations through improved load distribution and reduced roller oscillation.
Data Source
AI summary
An omni wheel includes a hub bracket and roller components. Each roller component includes a first roller assembly and a second roller assembly. The first roller assembly includes a roller bracket and a first roller structure. The second roller assembly includes a second shaft and a second roller structure, and the second shaft includes a second shaft body and a limiting portion. The second shaft body is connected and locked to a first connection structure to axially limit the second roller structure with respect to the limiting portion and the first connection structure. The omni wheel can ensure that second rollers will not shake and oscillate during running of the omni wheel and thus reduce vibrations and noise of the omni wheel, therefore improving the running stability.