Rotor Carrier Flange Spring Snap Ring Fixation
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Solution Overview
Problem
Rotor assemblies in electric motors face issues with rotor movement during calibration, leading to performance degradation and imbalance due to lack of effective fixation methods.
Innovation Solution
A rotor carrier assembly is designed with a torque converter housing, a rotor carrier fixed by bolts, and a spring-snap ring mechanism that secures the rotor carrier flange, preventing rotor movement and ensuring stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fixation methods are used for the rotor carrier, then the structure is simple, but the rotor moves during calibration leading to performance degradation and imbalance
Solution Approach 1:
The fixation mechanism is segmented into multiple functional components: a spring element for applying clamping force, a snap ring for positioning and retention, and a flange structure for distribution of forces. This segmentation allows each component to perform its specific function effectively while collectively achieving reliable rotor positioning without excessive overall complexity
Solution Approach 2:
The snap ring is nested within a groove of the rotor carrier, and the spring element is positioned between the snap ring and the rotor carrier flange. This nested arrangement allows compact integration of multiple fixation elements within the limited space of the rotor carrier assembly, achieving reliable fixation without adding significant external complexity
2Stability of the object's composition
If the rotor carrier is firmly fixed to prevent movement, then rotor position stability is improved, but the complexity of the fixation mechanism increases
Solution Approach 1:
The spring element automatically adjusts to maintain consistent clamping force on the rotor carrier flange, compensating for variations in assembly tolerances and thermal expansion. The snap ring self-locks into the groove to prevent radial movement. These self-adjusting and self-locking characteristics achieve stable rotor carrier positioning without requiring complex external control mechanisms
Solution Approach 2:
The fixation function is merged into the rotor carrier structure itself through the integrated flange and groove features. The spring and snap ring work together as a unified fixation system rather than separate components, achieving stable positioning with a compact, integrated design that minimizes overall complexity
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 effectively maintains the rotor's position within the hybrid module, enhancing performance characteristics and preventing imbalance, thereby improving overall system stability and performance.
Implementation Method 1
a spring clamps the rotor carrier flange between the snap ring and the castellated portion
Data Source
AI summary
A rotor assembly includes a torque converter including a housing forming a hydraulic chamber, a rotor for an electric motor, a rotor carrier non-rotatably connected to the rotor that is fixed to the torque converter housing, a rotor carrier flange, a spring, and a snap ring. In some embodiments, the rotor carrier includes a groove and a castellated portion, the snap ring is disposed in the groove, and the spring clamps the rotor carrier flange between the snap ring and the castellated portion.