Inertia Ring Fastening Layout for Lower-Cost Torque Transmission
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Solution Overview
Problem
Existing power transmission devices with attached torque transmission devices like damper devices are costly due to complex configurations and separate fastening mechanisms.
Innovation Solution
A power transmission device design that utilizes a common set of through holes in an inertia ring for both fastening a flexible plate and a torque transmission member, reducing manufacturing costs by eliminating the need for separate fastening mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate fastening mechanisms are used for the plate and torque transmission member, then the reliability of attachment is improved, but the manufacturing cost increases
Solution Approach 1:
The patent merges the fastening functions for the plate and torque transmission member into a single through-hole structure. The through-hole accommodates both a fastening member for the plate and a positioning member for the torque transmission member, eliminating the need for separate fastening mechanisms and reducing manufacturing complexity while maintaining secure attachment of both components
Solution Approach 2:
The through-hole is designed to serve multiple functions simultaneously: it provides a common passage for both the fastening member and positioning member, enables attachment of both the plate and torque transmission member, and facilitates precise positioning. This multi-functional design reduces the number of separate components needed while ensuring reliable connection
2Manufacturing precision
If multiple separate fastening mechanisms are used, then the positioning precision is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple fastening and positioning functions into a single integrated through-hole structure. By accommodating both the fastening member and positioning member within the same through-hole, the design achieves precise positioning of the torque transmission member while avoiding the complexity of multiple separate fastening mechanisms
Solution Approach 2:
The through-hole acts as an intermediary structure that mediates between the plate and the torque transmission member. It provides a common interface that enables both fastening and positioning functions to be achieved through coordinated interaction of the fastening member and positioning member, simplifying the overall mechanism while maintaining precision
Data Source
AI summary
A power transmission device includes an inertia ring, a plate, a plurality of first bolts, a torque transmission member, and a plurality of second bolts. The inertia ring has an annular shape. The inertia ring includes a plurality of through holes. The plurality of through holes are disposed at intervals in a circumferential direction. The plate is disposed on a first side with respect to the inertia ring in an axial direction. The plurality of first bolts are screwed into the plurality of through holes from the first side to fasten the plate to the inertia ring. The torque transmission member is disposed on a second side with respect to the inertia ring in the axial direction. The plurality of second bolts are screwed into the plurality of through holes from the second side to fasten the torque transmission member to the inertia ring.