Threaded Bearing Adjuster Locking Ring for Stable Preload
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Solution Overview
Problem
Conventional threaded bearing adjusters used in vehicle components tend to loosen during assembly and operation, leading to a loss of preload and axial instability of shafts, requiring time-consuming realignment to restore stability.
Innovation Solution
A bearing assembly comprising a threaded bearing adjuster and an anti-rotation locking ring with opposing threading, which inhibits axial translation of the adjuster away from the bearing, maintaining preload precision and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a threaded bearing adjuster is used to apply preload to the bearing, then the axial stability of the shaft is improved, but the threaded bearing adjuster loosens during assembly and operation causing loss of preload
Solution Approach 1:
A locking ring is introduced as an intermediary component between the threaded bearing adjuster and the bearing. The locking ring has threading that engages with the threaded bearing adjuster and prevents it from loosening, thereby maintaining the preload on the bearing while allowing the adjuster to perform its function of applying axial load to stabilize the shaft.
Solution Approach 2:
The system is divided into separate functional components: the threaded bearing adjuster for applying preload, the locking ring for maintaining the adjusted position, and the bearing for supporting the shaft. This segmentation allows each component to specialize in its function, with the locking ring specifically addressing the loosening problem without interfering with the adjuster's primary function.
2Manufacturing precision
If the threaded bearing adjuster is tightened to provide preload, then the bearing preload is improved, but the threaded bearing adjuster requires frequent re-alignment due to loosening
Solution Approach 1:
The locking ring is installed and configured to prevent loosening of the threaded bearing adjuster before operation begins. This preliminary action of preventing loosening eliminates the need for future re-alignment operations, saving time and maintaining precision throughout the service life of the assembly.
3Reliability
If the locking ring is added to prevent loosening of the threaded bearing adjuster, then the preload stability is improved, but the device complexity increases
Solution Approach 1:
The locking ring is a simple, inexpensive component that can be easily manufactured and replaced if necessary. Its simplicity and low cost justify its addition to the system, as it provides significant reliability improvement in maintaining preload stability without adding substantial complexity or expense to the overall assembly.
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 anti-rotation locking ring maintains target preload on bearings, preventing loosening and axial instability, enhancing shaft stability and reducing laborious re-alignment processes.
Implementation Method 1
The locking ring and the threaded bearing adjuster may both be installed in a tapped bearing seat of a vehicle drivetrain or powertrain component, with the threaded bearing adjuster positioned between the locking ring and the bearing. The locking ring and the threaded bearing adjuster may have threading that winds in opposite directions, which causes the locking ring and the threaded bearing adjuster to translate in opposite directions along a central axis of rotation of the bearing assembly when the locking ring and the threaded bearing adjuster are rotated in a common direction.
Data Source
AI summary
Methods and systems are provided for a bearing assembly of a vehicle. In one example, the bearing assembly includes a bearing coupled to a shaft and a threaded bearing adjuster in contact with the bearing and configured to apply a target amount of preload to the bearing. The bearing assembly may further include a locking ring in face-sharing contact with the threaded bearing adjuster. The locking ring may have a threaded outer surface that, when engaged with threading of a vehicle component, inhibits axial translation of the threaded bearing adjuster away from the bearing.