Buoyancy Clutch Engagement for Stable Washing Machine Spin Transfer
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Solution Overview
Problem
Existing washing machines face challenges in stably transmitting rotational force to the spin basket due to complex clutch mechanisms, which can lead to inefficiencies in washing and dehydration processes.
Innovation Solution
A buoyancy clutch system that moves up and down with the water level, using guide rails and protrusions to engage and disengage with the spin basket, allowing for selective and stable transmission of rotational force during different washing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex clutch mechanism is used to selectively transmit rotational force, then the washing machine can achieve washing and dehydration functions, but the structure becomes complicated and rotational force transmission becomes unstable
Solution Approach 1:
The patent extracts the clutch mechanism from the traditional complex multi-component design and isolates only the essential elements needed for selective power transmission. The simplified clutch structure removes unnecessary components while retaining the core function of engaging and disengaging the spin basket, thereby reducing structural complexity and improving transmission stability.
Solution Approach 2:
The simplified clutch mechanism is designed to perform multiple functions with a single structure. It can selectively transmit rotational force for both washing mode (pulsator only) and dehydration mode (spin basket and pulsator), eliminating the need for separate complex mechanisms for each function. This multi-functionality reduces overall device complexity while maintaining versatility.
2Device complexity
If a simplified clutch structure is used, then the device complexity is reduced, but the rotational force transmission stability may be compromised
Solution Approach 1:
The clutch mechanism incorporates dynamic engagement and disengagement capabilities that allow it to adapt to different operational modes. The clutch can dynamically switch between engaged and disengaged states based on whether washing or dehydration is required, ensuring stable rotational force transmission during spin basket rotation while maintaining simplicity in structure.
Solution Approach 2:
The clutch components utilize curved and rounded surfaces rather than sharp edges, which distributes mechanical stress more evenly during engagement and disengagement. This curved surface design reduces wear and improves the reliability of rotational force transmission while keeping the overall structure simple and compact.
3Volume of moving object
If the clutch mechanism is made more compact, then the space utilization is improved, but the engagement and disengagement reliability may be affected
Solution Approach 1:
The clutch mechanism is designed with nested components where smaller elements are positioned within or alongside larger structural elements. This nesting arrangement maximizes space utilization by efficiently packing the clutch components within the limited available volume, while maintaining adequate clearance and engagement surfaces for reliable operation.
Solution Approach 2:
The clutch mechanism utilizes vertical space and three-dimensional arrangement rather than only horizontal expansion. By stacking components vertically and utilizing the depth dimension, the design achieves compact volume while preserving sufficient engagement surface area and mechanical clearance for reliable engagement and disengagement operations.
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
The buoyancy clutch system ensures secure and efficient transmission of rotational force to the spin basket, maximizing volume within limited space and reducing complexity, thereby enhancing the washing and dehydration processes.
Implementation Method 1
a buoyancy clutch upwardly and downwardly movably mounted to the pulsator and configured to move up and down by buoyancy
Data Source
AI summary
A washing machine including a tub, a spin basket rotatably mounted in the tub, a pulsator rotatably mounted in the spin basket and having a pulsator hub part extending downward from a center portion of the pulsator, a driving device to generate rotational force, a wash shaft to transmit the rotational force generated from the driving device to the pulsator, and a buoyancy clutch upwardly and downwardly movably mounted to the pulsator hub part and configured to move up and down by buoyancy. The buoyancy clutch is configured to rotate together with the pulsator. When the buoyancy clutch moves down, the spin basket is engaged with the buoyancy clutch and receives the rotational force.