Washing Machine Ball Joint with Post-Assembly Lubrication Channels
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Solution Overview
Problem
Conventional washing machine suspension systems require pre-lubrication of ball joints before assembly, which complicates the assembly process and necessitates the use of assembly aids to prevent contamination from other components.
Innovation Solution
A ball joint design with lubrication inlet ports and channels that allow for post-assembly lubrication, enabling lubricant to flow circumferentially along the joint's outer surface and providing visual indication of proper lubrication through outlet ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-lubrication is performed before assembly, then the joint interface is properly lubricated, but assembly complexity increases and assembly aids are required
Solution Approach 1:
Instead of lubricating the joint cup before assembly, the patent inverts the sequence by providing lubrication ports and channels on the ball joint itself, allowing lubricant to be applied after the ball joint is assembled into the joint cup. This reversal eliminates the need for assembly aids and complex pre-lubrication procedures while ensuring proper lubrication of the joint interface.
Solution Approach 2:
The ball joint is designed with self-lubricating capabilities through integrated lubrication ports and channels. The joint can be lubricated independently after assembly without requiring external assembly aids or pre-lubrication of the joint cup, making the lubrication process self-service and simplifying the overall assembly procedure.
2Reliability
If pre-lubrication is performed before assembly, then the joint interface is properly lubricated, but the assembly process becomes slower
Solution Approach 1:
The patent inverts the traditional lubrication sequence by providing lubrication ports and channels on the ball joint rather than requiring pre-lubrication of the joint cup. This allows lubricant to be applied quickly after assembly through the ports, eliminating time-consuming pre-lubrication steps and assembly aid requirements, thereby increasing assembly productivity.
3Reliability
If pre-lubrication is performed before assembly, then the joint interface is lubricated, but assembly aids are necessary to prevent contamination
Solution Approach 1:
Instead of requiring pre-lubrication of the joint cup that necessitates assembly aids to prevent contamination, the patent inverts the approach by providing lubrication ports and channels on the ball joint itself. This allows lubricant to be applied after assembly through controlled ports, eliminating the need for assembly aids and simplifying the assembly operation.
Solution Approach 2:
The ball joint design with integrated lubrication ports enables self-lubrication after assembly without requiring external assembly aids. The lubrication process becomes a simple operation of injecting lubricant through the ports, eliminating the complexity and contamination risks associated with pre-lubrication procedures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates easier and cleaner assembly by allowing lubrication after the ball joint is installed, reducing the need for assembly aids and ensuring proper lubrication of the joint interface.
Implementation Method 1
The lubrication inlet port(s) may be in fluid communication with the lubrication channel(s) such that, when a lubricant is injected into the lubrication inlet port(s) at the upper portion of the joint body, the lubricant flows from the lubrication inlet port(s) into the lubrication channel(s) and then flows circumferentially within the lubrication channel(s) along the outer surface
Implementation Method 2
To reduce friction between the ball joint and the joint cup and to prevent wear on the joint, the interface between the ball joint and the cup must often be lubricated
Data Source
AI summary
A ball joint for use within a washing machine suspension system may generally comprise a joint body including a lower portion and an upper portion. The lower portion may define an outer surface having a curved profile. In addition, the joint body may define at least one lubrication inlet port extending between the upper and lower portions and at least one lubrication channel extending circumferentially around at least a portion of the lower portion along the outer surface. The lubrication channel(s) may be in fluid communication with the lubrication inlet port(s) such that, when a lubricant is injected into the lubrication inlet port(s) at the upper portion of the joint body, the lubricant flows from the lubrication inlet port(s) into the lubrication channel(s) and then flows circumferentially within the lubrication channel(s) along the outer surface.