Integrated Rotary Bearing Assembly for Compact Torque Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional rotary bearings face challenges in achieving high load capacity, high-speed ratio deceleration output, and miniaturization due to separate design of bearing rings and gear sets, leading to increased size, complexity, and assembly costs.
Innovation Solution
A rotary bearing assembly with an integrated structure featuring an input shaft, inner-ring and outer-ring components, and a load element, where the concentric and eccentric ends of the transmission shaft have the same diameter, allowing for miniaturization and compatibility of bearings, reducing the number of parts and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional rotary bearing is used with gear set for torque output, then high load capacity and high-speed ratio deceleration output are achieved, but device complexity and reserved space increase, which is unfavorable for miniaturization design
Solution Approach 1:
The patent combines the bearing outer ring and the inner gear ring into a single integrated component called the 'fixed ring'. This merging eliminates the need for separate bearing assemblies and gear sets, reducing device complexity while maintaining high load capacity and torque output capabilities. The integrated fixed ring structure allows the rotary bearing assembly to achieve both support and power transmission functions in one component.
2Ease of operation
If bearing ring and inner gear ring are designed separately to facilitate axial fixation of pins, then assembly convenience is improved, but number of parts increases, leading to increased processing cost and assembly cost
Solution Approach 1:
The patent integrates the bearing outer ring and inner gear ring into a single fixed ring component, reducing the total number of parts. This merging eliminates the need for separate assembly steps for bearing rings and gear rings, thereby reducing processing costs and assembly costs while maintaining assembly convenience through the simplified structure.
3Ease of operation
If concentric end and eccentric end of transmission shaft have different diameters, then functional requirements are met, but diameter of eccentric end needs to be increased, which is unfavorable for miniaturization
Solution Approach 1:
The patent employs local quality differentiation on the transmission shaft by providing different surface treatments or structural features at the concentric end and eccentric end portions. This allows the shaft to have uniform diameter (minimizing volume) while still meeting different functional requirements at different locations through localized modifications rather than increasing overall diameter.
4Reliability
If number of design parts is increased, then functional requirements are better met, but space requirement increases, making it difficult to achieve volume miniaturization
Solution Approach 1:
The patent merges multiple functional components (bearing outer ring, inner gear ring, and fixed ring) into a single integrated fixed ring structure. This consolidation reduces the number of design parts while maintaining all necessary functional requirements, thereby reducing the overall assembly volume and enabling miniaturization without sacrificing reliability or performance.
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 enables high load capacity and high-speed ratio deceleration output while minimizing size and component costs, improving assembly accuracy and alignment, and facilitating miniaturization.
Implementation Method 1
a load element disposed between the bearing inner ring and the bearing outer ring. Through the rolling of the load element, the bearing outer ring being fixed and the bearing inner ring being rotating, or the bearing outer ring being rotating and the bearing inner ring being fixed can be achieved
Data Source
AI summary
A rotary bearing assembly includes an input shaft, an inner-ring component, an outer-ring component and a load element. The input shaft is configured to combine a rotating shaft of a motor to provide a power input. The inner-ring component includes a gear set, wherein the inner-ring component is sleeved on the input shaft through the gear set and driven by the input shaft. The outer-ring component is sleeved on the inner-ring component through a load element and engaged with the gear set, wherein when the gear set is driven by the input shaft to drive the inner-ring component, the gear set drives the outer-ring component, and the inner-ring component and the outer-ring component are rotated relatively, wherein one of the inner-ring component and the outer-ring component is served to provide a power output, and a rotational speed difference is between the power input and the power output.