Dual Power Transfer Switch Torque Transmission
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Solution Overview
Problem
Dual power transfer switch mechanisms face inefficiencies in torque transmission due to the use of a single pin connection, which increases manufacturing costs and reduces reliability, and complicates miniaturization.
Innovation Solution
The dual power transfer switch employs multiple pairs of pins and pin holes, along with stop surfaces, to transmit torque between drive discs, allowing them to rotate together and reducing torque stress on the main shaft, thereby enhancing reliability and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single pin connection is used between drive discs to transmit torque, then the structure is simple, but the torque transmission reliability is poor and the main shaft size must be large
Solution Approach 1:
The single pin connection is segmented into multiple pin connections (at least two pairs of pins and pin holes) between the drive discs. This segmentation distributes the torque transmission load across multiple connection points, improving reliability while maintaining reasonable structural complexity
Solution Approach 2:
The first drive disc and main shaft are merged into an integrated structure. This combining eliminates the need for a separate connection interface between the main shaft and drive disc, reducing torque stress concentration and allowing for a smaller main shaft size while improving overall torque transmission reliability
2Power
If a single pin connection is used to transmit large torque, then the connection is simple, but the main shaft size increases and manufacturing cost increases
Solution Approach 1:
The torque transmission function is segmented across multiple pin connections rather than relying on a single large pin or oversized main shaft. This allows the system to handle large torque loads through distributed loading, enabling the use of smaller, more cost-effective components
Solution Approach 2:
The integration of the first drive disc with the main shaft creates a more efficient torque transmission path, reducing stress concentrations and allowing for optimized sizing of the main shaft that reduces material usage and manufacturing cost while maintaining torque transmission capacity
3Productivity
If a single pin connection is used between drive discs, then the structure is compact, but torque transmission efficiency deteriorates
Solution Approach 1:
The torque transmission path is segmented into multiple parallel connection paths through the use of multiple pin pairs. This segmentation increases the effective torque transmission capacity and efficiency by distributing the load, while the pins remain compact individual elements that do not significantly increase overall structural complexity
Data Source
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AI summary
The present disclosure relates to a dual power transfer switch including a main shaft, a first drive disc integrated with the main shaft and a second drive disc arranged coaxially with the first drive disc. The first drive disc includes a first stop surface, at least one first pin and at least one first pin hole. The first stop surface protrudes from a surface of the first drive disc. The at least one first pin is fixed on the first drive disc. The second drive disc includes a second stop surface, at least one second pin and at least one second pin hole. The second stop surface protrudes from a surface of the second drive disc. The at least one second pin is fixed on the second drive disc. The at least one first pin cooperates with the at least one second pin hole, the at least one second pin cooperates with the at least one first pin hole, and the second stop surface abuts against the first stop surface so that the first drive disc and the second drive disc rotate together in a circumferential rotation direction.