Carrier Bearing Bracket Offset Opening for UTV Driveline Vibration
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Solution Overview
Problem
Conventional carrier bearing assemblies in utility terrain vehicles (UTVs) fail to effectively manage unequal operating angles in universal joints, leading to excessive vibration, noise, and stress on driveline components, resulting in premature wear and reduced efficiency.
Innovation Solution
A carrier bearing assembly with a bracket having an offset opening and a rubber bushing to reduce vibration and stress by aligning the driveshaft at a non-perpendicular angle, allowing for a closer centerline of the opening to one end, and incorporating a zerk for lubrication, which reduces the gap between the driveshaft and the bearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional carrier bearing assembly uses a perpendicular opening in the bracket, then the structure is simple and easy to manufacture, but it fails to effectively manage unequal operating angles in universal joints, leading to excessive vibration, noise, and stress on driveline components
Solution Approach 1:
The patent applies asymmetry by positioning the opening centerline offset from the bracket centerline by a specific distance (2.5 cm or more) and at a non-perpendicular angle (85-89° or 91-95°). This asymmetric configuration allows the driveshaft to operate at corrected angles, equalizing the operating angles of universal joints and eliminating vibration and stress caused by unequal angles, thereby improving driveline component durability without requiring complex additional components
2Object-affected harmful factors
If the opening centerline is offset closer to one end of the bracket, then unequal operating angles are corrected and vibration is reduced, but the structural symmetry is compromised and manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise parameter ranges for the opening configuration: offset distance of 2.5 cm or more from the bracket centerline, and angle of 85-89° or 91-95° relative to the bracket centerline. These controlled parameter changes enable effective correction of unequal operating angles while providing clear manufacturing guidelines that balance precision requirements with practical manufacturability
3Object-affected harmful factors
If a rubber bushing is added between the bracket and bearing, then vibration and stress are reduced through damping, but the device complexity and assembly steps increase
Solution Approach 1:
The patent introduces a rubber bushing as an intermediary element positioned between the bracket and the bearing. This bushing serves as a vibration and stress dampener, absorbing harmful oscillations and protecting driveline components. The bushing is integrated into the existing bracket-bearing interface, providing damping functionality without requiring significant additional complexity or separate assembly steps
4Productivity
If the gap between the driveshaft and bearing is reduced, then operational smoothness and efficiency are improved, but the risk of binding and wear increases without proper lubrication
Solution Approach 1:
The patent reduces the gap between the driveshaft and bearing to minimize play and improve operational smoothness and efficiency. The close fit inherently guides the driveshaft and reduces unwanted movement, while the rubber bushing provides continuous lubrication and protection against binding, creating a self-sustaining system that maintains reliability without requiring complex external lubrication mechanisms
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 reduces unwanted vibration and stress, extends the life of driveline components, and improves the operational smoothness and efficiency of UTVs by matching rotational speeds and reducing wear on transmission components.
Implementation Method 1
A rubber bushing can be disposed between the bracket and the bearing
Implementation Method 2
A bearing can be friction fit in the opening in the bracket
Data Source
AI summary
A carrier bearing assembly for bolting to a frame of a utility terrain vehicle (UTV) can include a bracket comprising a first end, a second end, a width W extending between the first end and the second end, and first and second faces extending between the first end and the second end along the width W of the bracket. An opening can be formed completely through the bracket and extend from the first face to the second face, a centerline of the opening being at least 2.5 cm closer to the first end than the second end, and an angle between the opening and the bracket being in a range of 85-89° or 91-95°. A bearing can be fit in the opening and a rubber bushing can be disposed between the bracket and the bearing. First and second bolt openings can extend into the bracket.