Rotating Drivetrain Assembly for Double Output per Rotation
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Solution Overview
Problem
Existing drivetrain systems in vehicles, particularly bicycles, suffer from inefficiencies in power transfer, limited output per rotation, and mechanical losses, with traditional configurations often being cumbersome and not optimizing power transfer effectively.
Innovation Solution
A rotating drivetrain assembly featuring a central post connected to an actuator, with a main plate and sprocket wheel on opposite sides, utilizing rotating studs with projections that engage apertures to achieve double the output per rotation, and incorporating modular and stackable designs for enhanced durability and scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional single chainring drivetrain configuration is used, then the system is simple, but power transmission efficiency and output per rotation are limited
Solution Approach 1:
The drivetrain is segmented into multiple independent chainrings (front chainrings and rear chainrings) that can rotate independently around a central post. This segmentation allows each chainring to contribute to power transmission, effectively doubling the output per rotation while maintaining a relatively compact and organized structure around the central axis.
Solution Approach 2:
The patent transitions from a traditional single-plane drivetrain to a three-dimensional configuration with chainrings arranged on opposite sides of a central post. This dimensional change allows simultaneous engagement of multiple chainrings, increasing power output while distributing mechanical stress across different spatial planes.
2Productivity
If multiple chainrings with derailleurs and hub gears are used, then power transmission efficiency improves, but the system becomes cumbersome and mechanical losses increase
Solution Approach 1:
Multiple chainrings are merged into a single integrated assembly around one central post, eliminating the need for separate derailleur mechanisms and hub gears. The rotating studs simultaneously engage with multiple chainrings, combining their power output directly without the intermediate mechanical components that cause energy loss.
Solution Approach 2:
The patent extracts and eliminates the traditional derailleur and hub gear mechanisms from the drivetrain system. By using rotating studs that directly engage with chainrings fixed to a central post, the design removes unnecessary mechanical intermediaries that contribute to complexity and energy loss.
3Ease of operation
If freewheel mechanism is used, then coasting is enabled, but output per rotation is not enhanced
Solution Approach 1:
The drivetrain employs dynamically adjustable rotating studs that can engage or disengage from chainrings based on operational requirements. This dynamic capability allows the system to provide enhanced output per rotation when engagement is active while potentially allowing coasting when engagement is disengaged, offering operational flexibility without sacrificing power transmission efficiency.
Data Source
AI summary
The present invention relates to a rotating drivetrain assembly comprising a rotating central post in communication with an actuator. The assembly includes a main plate with a first plurality of apertures formed on one side of the central post, and a sprocket wheel with a second plurality of apertures formed on the opposite side of the central post. Two rotating studs are positioned on opposite ends of the central post, between the main plate and the sprocket wheel. This configuration allows for efficient power transmission and rotation of the drivetrain assembly, enabling smooth and reliable operation.