Internal Coupler Nesting for Compact Laundry Clutch Design
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Solution Overview
Problem
Conventional laundry treating apparatuses face limitations due to the need for a clutch mechanism that requires significant space and complexity, leading to misalignment, vibration, noise, and reduced washing capacity, as the coupler and moving components are disposed outside the housing, necessitating a more compact and efficient design.
Innovation Solution
The apparatus incorporates a coupler accommodated inside the housing, supported from outside by a support mechanism, with a moving portion and actuator to lift and lower the coupler, eliminating the need for electronic components and reducing the overall volume and complexity of the clutch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the coupler is positioned outside the housing to rotate the drum and pulsator independently, then the drum and pulsator can be controlled to rotate independently or simultaneously, but the driver and clutch configuration becomes long and complex, leading to misalignment, noise, and reduced durability
Solution Approach 1:
The coupler is nested inside the housing rather than positioned outside. The housing has a through-hole that allows the coupler to be supported from the outside while being accommodated inside the housing space. This nesting arrangement eliminates the need for a long external configuration while maintaining the independent rotation control capability.
Solution Approach 2:
The coupler is repositioned from an external lateral arrangement to an internal arrangement accessed through a vertical through-hole in the housing. This dimensional change allows the coupler to be supported externally while operating internally, reducing the horizontal footprint and overall complexity of the driver-clutch configuration.
2Ease of operation
If the coupler is positioned outside the housing, then the drum can be rotated, but the overall volume and height of the clutch increase, making installation and maintenance cumbersome
Solution Approach 1:
The coupler is nested within the housing boundaries, supported through a through-hole. This allows the coupler to perform its rotation function while occupying minimal external space. The housing encapsulates the coupler, reducing the overall clutch volume while maintaining operational capability.
Solution Approach 2:
The support structure for the coupler is merged with the housing through the through-hole arrangement. Instead of requiring separate external support components that increase volume, the housing itself provides the support pathway, consolidating structures and reducing overall clutch size.
3Ease of operation
If the coupler is positioned outside the housing, then the drum rotation is enabled, but misalignment and noise occur due to the long configuration
Solution Approach 1:
The coupler is nested inside the housing with support through the through-hole, creating a compact and rigid configuration. This shortens the alignment path between the coupler and the drum rotation axis, reducing misalignment risks and vibration-induced noise while maintaining smooth drum rotation.
Data Source
AI summary
A laundry treating apparatus includes a coupler that connects a housing (a gearbox) capable of rotating a driver and a drum in a clutch inside the housing.