Double-Row One-Way Bearing Cage for Faster Reverse Locking
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Solution Overview
Problem
Conventional one-way bearings have a complicated structure, inconvenient installation, poor lubrication and sealing, significant cage thickness occupying internal space, limited sealing options, and delayed reverse locking, with insufficient radial and axial force bearing capacity.
Innovation Solution
A double-row one-way bearing design featuring a cage with independent roller and wedge holding portions, an elastic limit ring to stabilize wedges, and a simplified structure that allows for thinner cages and increased wedge count, enabling easier assembly and improved locking performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If wedge holding springs are installed near each wedge pocket to abut against the wedges, then the wedges can be stabilized in position, but the cage structure becomes complicated and installation becomes time-consuming
Solution Approach 1:
The patent combines multiple wedge holding springs into a single continuous spring structure that spans across multiple wedge pockets, eliminating the need for individual springs at each pocket. This merging approach maintains wedge stabilization while dramatically simplifying the cage structure and reducing installation complexity
Solution Approach 2:
The single continuous spring structure serves multiple functions simultaneously: it stabilizes multiple wedges along its length, provides uniform elastic force distribution, and simplifies the cage design. This multi-functional element replaces what would otherwise require multiple separate spring components
2Strength
If the cage is made thick enough to accommodate wedge holding springs and maintain structural integrity, then the cage can support the wedges, but it occupies most of the inner space of the bearing
Solution Approach 1:
By merging multiple spring elements into a single continuous spring, the overall volume required for spring accommodation is reduced, allowing for a thinner cage design that maintains sufficient structural strength while occupying less internal bearing space
Solution Approach 2:
The continuous spring structure acts as a flexible element that can provide the necessary structural support and wedge retention functionality with minimal thickness, enabling the cage to be made thinner while maintaining adequate strength
3Stability of the object's composition
If the cage occupies most of the inner space of the bearing, then the wedges can be retained, but lubrication and sealing options are limited
Solution Approach 1:
The consolidated spring structure reduces the overall space occupied by retention mechanisms, creating additional internal clearance that accommodates various sealing and lubrication configurations without compromising wedge retention capability
4Stability of the object's composition
If multiple individual wedge holding springs are used for each wedge, then each wedge can be independently stabilized, but the installation process becomes very complicated
Solution Approach 1:
The patent merges multiple individual spring installations into a single continuous spring placement operation. This allows all wedges to be stabilized simultaneously through one installation action rather than requiring separate spring installations for each wedge, dramatically improving installation convenience
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 design simplifies cage structure, reduces thickness, enhances sealing and lubrication options, and improves axial and radial force bearing capacity while reducing reverse locking delay.
Implementation Method 1
an elastic limit ring coaxially arranged with the bearing outer ring and the bearing inner ring, and passes through the groove of each wedge to apply a radially inward force to each wedge
Data Source
AI summary
A double-row one-way bearing includes a bearing outer ring and a bearing inner ring coaxially arranged around a central axis. Spherical rollers are arranged between the bearing outer ring and the bearing inner ring. Wedges are radially arranged between the bearing outer ring and the bearing inner ring relative to the central axis, and spaced apart from the spherical rollers in the axial direction. Each wedge is provided with a groove at the side away from the bearing inner ring. A cage is coaxially arranged with the bearing outer ring and the bearing inner ring and provided with roller holding portions and wedge holding portions. The spherical rollers are respectively held in the roller holding portions and the wedges are respectively held in the wedge holding portions. An elastic limit ring passes through the groove of each wedge to apply a radially inward force to each wedge.