Universal Damper With Interchangeable Hub Assembly
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Solution Overview
Problem
Conventional clutch disc assemblies require the splinted hub to be installed during assembly, limiting the ability to interchange hubs with different saline profiles, leading to manufacturing, supply, and logistics challenges due to the need for pre-assembled components before knowing the required profile of the end user.
Innovation Solution
A clutch disc assembly featuring a universal damper with a retainer plate and interchangeable hub, where the hub has a circumferential groove and outer splines that mesh with the damper's internal splines, allowing the hub to be installed after assembly, eliminating the need for a clutch cover plate and enabling compatibility with various saline profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hub is installed during assembly using a cover plate secured with rivets, then the connection between hub and damper is strong and reliable, but the hub cannot be interchanged after assembly and manufacturing complexity increases
Solution Approach 1:
The clutch disc assembly is segmented into modular components: the universal damper assembly (friction plate + damper + retainer plate) and the interchangeable hub. The hub is separated from the damper connection, allowing it to be removed and replaced independently through the opening in the retainer plate, while the retainer plate remains permanently secured to the damper with rivets.
Solution Approach 2:
The retainer plate is designed as a universal component that can accommodate multiple hub types with different spline profiles. The retainer plate maintains a consistent internal spline configuration that universally accepts various hub designs, enabling the same damper assembly to work with different hub specifications.
2Productivity
If all clutch disc components are assembled at once before knowing the required spline profile, then the assembly is complete and ready for use, but manufacturing and logistics complexity increases due to inability to customize hubs
Solution Approach 1:
The universal damper assembly with retainer plate is pre-assembled and prepared in advance, but the hub installation is deferred until the specific spline profile requirement is known. The opening in the retainer plate is pre-configured to accept various hub types, allowing final hub selection and installation to occur after the damper assembly is ready.
Solution Approach 2:
The assembly process is made dynamic and flexible: the retainer plate is permanently fixed to the damper, but the hub connection remains reversible. This allows the hub to be installed, removed, and replaced based on customer requirements, transforming the assembly process from a fixed sequence to an adaptable workflow.
3Strength
If the retainer plate is secured to the damper with rivets, then the retainer plate connection is strong and reliable, but the hub must be installed during assembly and cannot be replaced later
Solution Approach 1:
The connection system is segmented into two distinct interfaces: a permanent riveted connection between the retainer plate and damper providing structural strength, and a removable splined connection between the hub and retainer plate providing operational flexibility. This segmentation allows each connection type to be optimized for its specific function.
Solution Approach 2:
The retainer plate serves as an intermediary component that mediates between the permanent damper structure and the interchangeable hub. It provides a stable, riveted attachment point to the damper while simultaneously offering a removable interface for hub installation and replacement.
Data Source
AI summary
A clutch disc assembly, comprising a friction plate, a damper fixedly secured to the friction plate, comprising an inwardly facing saline and a retainer plate, the retainer plate comprises a first radially inwardly facing surface and a second radially inwardly facing surface radially offset from the first radially inwardly facing surface, and a hub, the hub comprises a first radially outwardly facing surface having a circumferential groove, a second radially outwardly facing surface having an outer saline that meshes with the inwardly facing saline to non-rotatably connect the hub and the damper, and an internal saline surface.