Transmission Component Connection Using Radial Coupling Elements and Rivet Studs
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Solution Overview
Problem
Existing technologies fail to provide a permanent, play-free, and rotationally fixed connection for torque transfer between components in transmissions, especially at high rotational speeds and torques, while ensuring centering and balancing requirements.
Innovation Solution
A rotationally fixed connection using radially arranged coupling elements and rivet studs on one component, which interact with corresponding slots and rivet holes on the other, ensuring centering and torque transfer, with axial fixing and force transfer achieved through rivet studs, and produced via sheet forming or alternative methods like casting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single type of connection element is used, then the structure is simpler, but it cannot simultaneously achieve both centering and axial fixing functions
Solution Approach 1:
The connection element is divided into two distinct functional parts: coupling elements for centering and torque transfer, and rivet studs for axial fixing. This segmentation allows each part to be optimized for its specific function while working together as an integrated connection system.
Solution Approach 2:
The connection system achieves multi-functionality by combining coupling elements and rivet studs into a single integrated arrangement. The coupling elements handle centering and torque transfer, while the rivet studs provide axial fixing, creating a universal connection solution that performs multiple critical functions simultaneously.
2Ease of manufacture
If traditional connection methods are used, then manufacturing is simpler, but play-free and rotationally fixed connection cannot be achieved
Solution Approach 1:
The coupling elements and rivet studs are pre-formed with precise geometries during the sheet forming process. The push-through process creates predetermined shapes and positions, ensuring that when assembled, the connection achieves play-free and rotationally fixed characteristics without requiring additional precision machining operations.
Solution Approach 2:
The invention changes the manufacturing parameters by using sheet forming with push-through process instead of traditional machining or assembly methods. This process transformation enables the creation of complex three-dimensional connection elements from flat sheets, achieving high precision through process control rather than post-processing.
3Device complexity
If connection elements are not radially arranged, then the structure is simpler, but torque transfer at high rotational speeds cannot be ensured
Solution Approach 1:
The coupling elements are arranged radially around the connection axis, creating an asymmetric distribution optimized for torque transfer. This radial arrangement positions the coupling elements to maximize their lever arm for torque transmission while maintaining balance around the rotation axis, enabling reliable high-speed torque transfer.
Data Source
AI summary
A rotationally fixed connection of first and second components (2, 4) of a transmission (1) for torque transfer. The fixed connection is produced by the combination of two different types of connection elements (6, 7, 8, 9), such that the connection elements (6, 8) of a first type ensures the mutual centering of the first and the second components (2, 4) to be connected and torque transfer, while the connection elements (7, 9) of a second type enable the first and the second components (2, 4) to be axially fixed and transfer axial operating forces.