Midship Assembly Dust Sheet Integration for Wear Washer Stability
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Solution Overview
Problem
The existing midship assembly designs suffer from uncontrolled movement and deformation of wear washers due to the space between the wear washer and midship stub, leading to functional failure and corrosion issues with metal dust sheets, which increase costs and complexity.
Innovation Solution
A compact midship assembly design integrates a dust sheet with the wear washer, eliminating the space between the wear washer and midship stub, using materials like plastic to prevent corrosion and simplify mounting, thereby ensuring proper alignment and function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a space is provided between wear washer and midship stub to enable sliding, then the wear washer can move freely during mounting, but the wear washer becomes uncontrolled, may leave axis or get crushed and deformed
Solution Approach 1:
A dust sheet is introduced as an intermediary component between the wear washer and the center bearing assembly. This dust sheet acts as a mediator that guides the wear washer during insertion, preventing it from leaving the axis or getting crushed, while still allowing the necessary sliding motion for mounting operations.
Solution Approach 2:
The dust sheet is implemented as a thin, flexible component that can deform to accommodate the wear washer during insertion while maintaining the axial alignment. The flexible nature of the dust sheet allows it to conform to the wear washer without causing deformation, ensuring reliable positioning.
2Object-affected harmful factors
If metal dust sheet is used for protection, then surface protection is provided, but corrosion occurs and extra coating cost is incurred
Solution Approach 1:
The dust sheet is made from a composite or alternative material that combines protective properties with corrosion resistance. This material selection eliminates the need for additional corrosion protection coatings while maintaining the protective function, thereby reducing device complexity and manufacturing costs.
3Reliability
If wear washer is compacted with dust sheet, then alignment and stability are improved, but the structure becomes more integrated
Solution Approach 1:
The wear washer and dust sheet are merged into a single integrated assembly. This combination ensures that the wear washer maintains proper alignment and stability during mounting operations, as the dust sheet and wear washer move together as one unit, eliminating the alignment issues that occur when they are separate components.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Invention relates to a midship assembly (A) comprising fastener (7) located on propshaft (B) providing transmission of motion received from transmission output shaft to differential and providing connection of propshaft (B) to vehicle chassis, midship stub (2) housing the fastaner(7), midship yoke (1) connected to midship stub (2) and providing connection of rear propshaft (B.2) and joint, a wear washer (4) located between the center bearing assembly (3) and the midship yoke(1) and preventing contact of midship yoke(1) with the center bearing assembly (3), midship washer (5) providing mounting of members on the propshaft (B) and it comprises dust sheet (6) compact with the wear washer (4) and located between the center bearing assembly (3) and the wear washer (4), used for protection of bearings in the center bearing assembly (3) and preventing dirt, dust penetration to bearings, preventing leaving of the wear washer (4) from axis and preventing deformation during mounting to the center bearing assembly (3).