Bearing Cover Assembly With Tapered Adapter Locking
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Solution Overview
Problem
Existing bearing cover attachment methods for rolling element bearings require machining processes and can unintentionally dislodge due to incidental contact, and they often require compatibility between the bearing housing and cover, which limits versatility.
Innovation Solution
A bearing cover assembly comprising an annular adapter with a tapered inner surface and an end cap with a corresponding tapered outer surface, which radially expands to securely engage with the bearing housing, and latch arms that secure the assembly through mechanical engagement, allowing for easy installation and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bolts or set screws are used to fasten the bearing cover to the housing, then the bearing cover is securely attached, but machining processes are required and the cover may unintentionally dislodge due to incidental contact
Solution Approach 1:
The patent replaces traditional mechanical fastening systems (bolts, set screws, press-fits) with a snap-fit elastic engagement system. The bearing cover incorporates elastic arms with latch features that engage with corresponding features on the housing, eliminating the need for machining operations while providing secure attachment through elastic deformation and mechanical interlocking.
Solution Approach 2:
The patent utilizes elastic deformation as a key parameter change mechanism. The elastic arms are designed to deform during installation and then maintain a persistent engagement force, changing the physical state from rigid mechanical fastening to flexible elastic retention. This allows the cover to be securely attached without machining while accommodating incidental contact forces.
2Reliability
If traditional attachment methods are used, then the bearing cover can be securely fastened, but compatibility between the bearing housing and cover is required, limiting versatility
Solution Approach 1:
The patent designs the bearing cover with universal elastic engagement features that can accommodate multiple housing types and configurations. The elastic arms with latch features are configured to engage with various housing geometries, allowing a single cover design to fit different bearing housings without requiring precise compatibility matching, thereby enhancing versatility while maintaining secure attachment.
3Ease of manufacture
If press-fitting a polymer cap into the housing bore is used, then attachment is achieved, but the cover may unintentionally dislodge due to incidental contact
Solution Approach 1:
The patent incorporates curved elastic arms with latch features that provide mechanical interlocking engagement. The elastic arms are configured to engage with corresponding features on the housing in a manner that resists dislodgement from incidental contact, replacing the simple press-fit polymer cap approach with a more sophisticated elastic mechanical engagement system.
4Reliability
If machining processes are undertaken for attachment, then secure fastening is achieved, but the installation time and complexity increase
Solution Approach 1:
The patent replaces machining-based mechanical fastening systems with a snap-fit elastic engagement system that requires no machining operations. The elastic arms with latch features can be installed by simple insertion and elastic deformation, dramatically reducing installation time and complexity while maintaining secure attachment through elastic retention and mechanical interlocking.
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 provides a secure and positive engagement of the bearing cover assembly to the housing, preventing unintentional dislodgement and enabling it to fit various bearing housings, while allowing for easy assembly and disassembly without the need for complex machining processes.
Implementation Method 1
sliding contact between the tapered inner annular surface and the tapered outer surface radially expands the annular adapter in the housing bore
Data Source
AI summary
A bearing cover assembly can be assembled to a bearing housing in which a rolling element bearing is accommodated. The bearing housing assembly includes an annular adapter and an end cap that can be mated together. The annular adapter can have a tapered inner annular surface and can be inserted into the housing bore of the bearing housing. The end cap can have a corresponding outer tapered surface. When the end cap is inserted into the adapter hole defined by the annular adapter, the sliding contact between the tapered inner annular surface and the outer surface radially expands the annular adapter inside the housing bore creating a positive engagement retaining the bearing cover assembly to the bearing housing.