Drum Washer Dual-Shaft Drive With Clutch-Switched Speed Modes
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Solution Overview
Problem
The existing drum washing machines face challenges in achieving high reliability and low cost for the driving part, as well as proper dewatering due to differences in rotating speeds between the drum and the rotating body under varying load conditions, which can lead to inefficient washing and dewatering processes.
Innovation Solution
A drum washing machine design utilizing a driving part with a clutch mechanism that switches between different rotating speed configurations using belt and wheel speed-reducing mechanisms, allowing the drum and rotating body to rotate at different or the same speeds, enabled by a single driving motor, and incorporating a wing belt wheel and drum belt wheel system for efficient speed control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two driving motors are used to enable the drum and rotating body to rotate at different speeds, then the washing machine can achieve high detergency through differential rotation, but the cost of the driving part increases significantly
Solution Approach 1:
The patent combines two driving functions into a single driving motor by using a belt transmission system. The drum and rotating body are both driven by the same motor through different belt-pulley configurations, allowing differential rotation without requiring two separate motors, thus reducing cost while maintaining washing performance
Solution Approach 2:
The patent introduces a belt transmission system as an intermediary between the single driving motor and the drum-rotating body system. This intermediary mechanism enables flexible speed control and differential rotation, achieving high detergency without the need for multiple motors
2Reliability
If belts and belt wheels are used for speed reduction, then the reliability of the driving part improves, but the ability to maintain synchronized rotation during dewatering becomes difficult
Solution Approach 1:
The patent employs a dynamic clutch mechanism that can switch between different transmission states. During washing, the clutch allows differential rotation for high detergency; during dewatering, the clutch engages to synchronize the rotation of the drum and rotating body, maintaining adaptability across different operational phases while preserving the reliability of belt-driven speed reduction
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
This design enhances the reliability and cost-effectiveness of the driving part, ensures proper dewatering by maintaining synchronized rotating speeds during dewatering, and reduces the risk of washing machine malfunctions and damage to delicate clothes.
Implementation Method 1
a drum transmission belt; the rotation of the driving motor used for the drum is transmitted to a rotating shaft of the drum by belts
Implementation Method 2
a wing transmission belt; the rotation of the driving motor used for the rotating body is transmitted to a rotating shaft of the rotating body by the belts
Data Source
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AI summary
Provided is a drum washing machine, enabling a drum (22) and a rotating body (24) to rotate by a driving part (30) with low cost and high reliability, wherein the driving part (30) includes: a driving motor (100); a first rotating shaft (200) fixed on a drum (22); a second rotating shaft (300) fixed on a rotating body (24); drum belt wheels (610) fixed on the first rotating shaft (200) and connected with the driving motor (100) by a drum transmission belt (630); wing belt wheels (510) connected with the driving motor (100) by a wing transmission belt (530) and having outer diameters different from those of the drum belt wheels (610); and a clutch mechanism part (700) switching a driving form of the driving part (30) between a biaxial driving form and a uniaxial driving form, wherein the biaxial driving form is a form that enables the drum (22) and the rotating body (24) to rotate at different rotating speeds through connecting the second rotating shaft (300) and the wing belt wheels (510), and the uniaxial driving form is a form that enables the drum (22) and the rotating body (24) to rotate at a same rotating speed through connecting the second rotating shaft (300) and the drum belt wheels (610).