Brush Holder Segmentation for One-Handed Replacement
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Solution Overview
Problem
Conventional brush holders for dynamoelectric machines are heavy and unwieldy, making safe and efficient replacement of worn brushes difficult and dangerous, especially when operating the machine, as they require two hands and can pose electrical hazards.
Innovation Solution
A brush holder apparatus with a stationary support member and a brush retainment member featuring a cam-style retainer that allows for one-handed installation and removal of brushes, incorporating a fork electrical connector and a knife electrical connector for secure brush retention, and optionally an RFID tag for monitoring brush wear, ensuring safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional brush holders are used, then electrical current conduction is achieved, but the device becomes heavy and unwieldy requiring two hands for operation
Solution Approach 1:
The brush holder is divided into separate components: a stationary support member that remains fixed, and a brush retainment member that can be independently manipulated. This segmentation allows the operator to work with only the lightweight retainment member during brush replacement, eliminating the need to handle the entire heavy assembly with two hands.
Solution Approach 2:
The brush retainment member is extracted as a separate, lightweight component from the overall brush holder assembly. This extracted component can be easily manipulated with one hand while the stationary support member remains in place, solving the problem of heavy and unwieldy conventional brush holders.
2Ease of operation
If conventional brush holders are used, then brush retention is achieved, but the replacement process becomes difficult and dangerous
Solution Approach 1:
By separating the brush retainment function from the stationary support structure, the design allows for simple one-handed manipulation of the retainment member while maintaining secure retention of the brush. This reduces operational difficulty and safety risks without requiring complex mechanisms.
Solution Approach 2:
The brush retainment member is designed to be self-contained and self-operating, allowing a single operator to safely replace brushes using only one hand. The component's design inherently provides the necessary retention and release functions without requiring additional tools or complex operational procedures.
3Productivity
If brushes are replaced during operation to decrease downtime, then productivity is improved, but electrical hazards increase
Solution Approach 1:
The brush retainment member is extracted as a separate, easily manipulatable component that can be safely handled with one hand during machine operation. This extraction allows operators to perform brush replacements quickly while minimizing exposure to electrical hazards by reducing the need for complex two-handed operations near energized components.
Solution Approach 2:
The design replaces complex mechanical manipulation requirements with a simplified one-handed operation system. The brush retainment member's design eliminates the need for complex tool use or two-handed mechanical operations, allowing safe and quick brush replacement even during machine operation.
4Ease of operation
If conventional brush holders are used, then current conduction is achieved, but brush replacement requires two hands increasing danger
Solution Approach 1:
The electrical connection system is segmented into a stationary support member with connection points and a separate brush retainment member. This segmentation allows the retainment member to be designed for simple one-handed manipulation while maintaining secure electrical connections through the fork and knife connector interface.
Solution Approach 2:
The brush retainment member is designed as a universal component that combines multiple functions: mechanical brush retention, electrical connection maintenance, and safe one-handed operation. The fork electrical connector and knife electrical connector work together to provide both electrical continuity and mechanical retention in a single integrated component.
Data Source
AI summary
A brush holder apparatus includes a stationary support member having at least one groove and a fork electrical connector. A brush retainment member is configured to be releasably affixed to the stationary support member. The brush retainment member has at least one rail configured to slide along the at least one groove. The brush retainment member has a knife electrical connector configured to mate with the fork electrical connector. The stationary support member is configured for electrical connection to a collector mount and the brush retainment member is configured to retain at least one brush.