Roller Clutch Assembly With Cam Surfaces and Dual Snap Rings
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Solution Overview
Problem
Existing roller clutch assemblies lack sufficient structural support and efficiency due to smooth inner surfaces in the outer race and the use of a single snap ring, which can lead to instability and reduced performance.
Innovation Solution
A roller clutch assembly with a cam gear machined into the outer race, featuring circumferentially spaced cam surfaces with shallow and deep ends, and the use of two spiral lock snap rings for enhanced structural support, along with a metal cage and retainer plates for improved retention and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a smooth inner surface is used in the outer race, then manufacturing is simpler, but structural support and stability are insufficient
Solution Approach 1:
The outer race transitions from a uniformly smooth surface to having localized cam surfaces with varying depths. These cam surfaces are strategically positioned to provide structural support and engagement points for the roller clutch assembly, while other areas maintain smoother surfaces. This local variation in surface quality resolves the contradiction by providing enhanced stability where needed without significantly complicating the overall manufacturing process.
2Device complexity
If a single snap ring is used, then device complexity is reduced, but structural support and retention are insufficient
Solution Approach 1:
The retention system is segmented from a single snap ring into multiple snap rings positioned at different locations within the outer race. This segmentation allows each snap ring to provide localized support and retention for specific components of the roller clutch assembly, thereby increasing overall structural strength and stability while distributing the functional load across multiple simpler elements rather than one complex component.
3Reliability
If cam surfaces with deep radial recession are added to the outer race, then engagement and retention are improved, but manufacturing complexity increases
Solution Approach 1:
The cam surfaces are designed with controlled parameter variations, specifically in their radial depth and circumferential spacing. By optimizing these parameters, the cam surfaces provide reliable engagement and retention functionality while keeping the geometric complexity within manageable manufacturing limits. The parameter changes are sufficient to achieve the desired reliability improvement without requiring excessively complex machining operations.
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 enhanced structural support and stability, improving the performance and reliability of the roller clutch assembly by utilizing cam surfaces and dual snap rings to securely engage the retainer plates and roller clutch components.
Implementation Method 1
an outer race with a plurality of cam surfaces circumferentially spaced apart from each adjacent cam surface having a shallow end and a deep end further radially recessed into the outer race
Implementation Method 2
at least two spiral lock snap rings, wherein one spiral lock snap ring is disposed adjacent the outer race
Data Source
AI summary
An roller clutch assembly that includes an outer race with a plurality of cam surfaces circumferentially spaced apart from each adjacent cam surface having a shallow end and a deep end further radially recessed into the outer race and an inner race having circumferentially spaced splines on an inner surface. A roller clutch assembly is disposed adjacent the inner race, and at least two spiral lock snap rings, wherein one spiral lock snap ring is disposed adjacent the outer race.