Driving apparatus for washing machine and washing machine having the same
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Solution Overview
Problem
The existing washing machine configurations face challenges in precisely controlling the speed and rotary force of the rotating tub and pulsator due to the complexity of the clutch and motor coupling, and are prone to moisture infiltration in the hall sensor assembly.
Innovation Solution
A driving apparatus for a washing machine featuring a stator with a ring-shaped core, upper and lower insulators, and a clutch with a transfer gear that is coupled to the stator, allowing for precise control of the rotary force transmission and incorporating a hall sensor assembly with a slanted surface to prevent moisture infiltration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a mechanical clutch is disposed on the center of a shaft with a motor disposed at one side connected by a belt, then the clutch and motor can be connected, but it is difficult to implement the center of gravity and increases device complexity
Solution Approach 1:
The clutch is integrated directly into the stator structure of the motor, merging two previously separate components (clutch and motor) into a single unified structure. This eliminates the need for separate belt connections and external clutch mounting, thereby simplifying the overall coupling structure and improving center of gravity implementation.
2Device complexity
If the motor is directly connected to the shaft, then the coupling structure is simplified, but the speed and rotary force are not precisely controlled
Solution Approach 1:
The clutch is integrated directly into the stator structure of the motor, merging two previously separate components (clutch and motor) into a single unified structure. This eliminates the need for separate belt connections and external clutch mounting, thereby simplifying the overall coupling structure and improving center of gravity implementation.
3Device complexity
If the transfer gear is disposed outside the stator, then the stator structure is simpler, but the driving apparatus size is larger and assembly is more complex
Solution Approach 1:
The transfer gear is positioned inside the stator structure, nesting one component within another. This nested arrangement reduces the overall volume of the driving apparatus and simplifies assembly by eliminating the need for external gear mounting structures.
4Device complexity
If the hall sensor assembly is exposed, then the structure is simpler, but moisture infiltration occurs reducing reliability
Solution Approach 1:
A waterproof cover is introduced to seal the hall sensor assembly, protecting it from moisture infiltration. This thin film barrier maintains structural simplicity while ensuring reliability by preventing moisture damage to the sensor components.
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 solution reduces the size and assembly cost of the driving apparatus, enhances the control of the rotating tub and pulsator, and prevents moisture from entering the hall sensor assembly, improving the overall efficiency and reliability of the washing machine.
Implementation Method 1
The rotor is disposed around the stator and rotating by electromagnetic interaction with the stator
Data Source
AI summary
A washing machine driving apparatus and a washing machine having the same, capable of minimizing the coupling structure of a clutch and a motor and including a stator provided in a shape of a ring, a rotor disposed around the stator and rotating by electromagnetic interaction with the stator, and a clutch configured to transmit a rotary force of the rotor selectively to the rotating tub and the pulsator, wherein the stator comprises a stator core, an upper insulator covering an upper portion of the stator core and a lower insulator covering a lower portion of the stator core, and wherein the upper insulator has a mounting part protruding upward from an upper side of the upper insulator such that the clutch is coupled to the upper insulator.