Motor Brush Assembly With Thermoset Holder for Heat Reliability
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Solution Overview
Problem
The existing motor brushes in washing machines have a complex manufacturing process and are prone to heat-related issues due to the use of plastic components, which can melt during operation, increasing manufacturing costs and reducing reliability.
Innovation Solution
A simplified motor brush design featuring a brush holder with a first and second fixing portion for secure assembly, eliminating the need for a copper sleeve and using a thermosetting material for the brush holder to enhance heat dissipation and reliability, while reducing manufacturing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If plastic brush holders are used in motor brushes, then manufacturing cost is reduced, but the brush holders are prone to melting due to heat generation during operation
Solution Approach 1:
The patent combines the brush holder and brush into a single integrated component, eliminating the separate plastic brush holder that caused heat-related failures. The integrated design uses a single material structure that can withstand operational temperatures while maintaining manufacturing efficiency.
2Reliability
If multiple components (upper brush holder, lower brush holder, copper sleeve, electric brush) are used in motor brushes, then functional requirements are met, but the number of parts and manufacturing complexity increase
Solution Approach 1:
The patent integrates multiple functional components into a single unified structure. The brush assembly combines the holder and brush elements into one component, reducing the total part count while maintaining all necessary functions through integrated design.
Solution Approach 2:
The integrated brush assembly performs multiple functions within a single component structure, including support, electrical connection, and heat management, eliminating the need for separate specialized parts for each function.
3Ease of operation
If traditional motor brush assembly with separate brush holder and brush components is used, then assembly is straightforward, but manufacturing process becomes complicated and time-consuming
Solution Approach 1:
By integrating the brush holder and brush into a single molded component, the patent eliminates multiple assembly steps while maintaining ease of installation. The unified structure reduces manufacturing complexity and increases production efficiency without sacrificing operational simplicity.
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 simplifies the assembly process, reduces manufacturing costs, and improves the reliability and heat management of the motor brush, preventing melting and ensuring stable operation.
Implementation Method 1
using a thermosetting material for the brush holder to enhance heat dissipation and reliability
Data Source
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AI summary
Provided are a motor brush, a motor and a washing machine. The motor brush includes: a brush holder defining an accommodating chamber and having a first fixing portion provided thereon; and a brush partially located within the accommodating chamber and having a second fixing portion provided thereon. The first fixing portion is assembled with the second fixing portion in such a manner that the brush is fixed on the brush holder. Through the technical solution of the present disclosure, a structural arrangement of the motor brush of the present disclosure can be simplified while ensuring reliability of the motor brush. Further, assembling steps can be reduced, thereby realizing optimization of manufacturing process of the motor brush.