Resilient Member for Brush Holder Assembly
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Solution Overview
Problem
Brush holder assemblies in electrical devices face issues with deposit buildup and variable electrical resistance due to brush wear, which affects contact quality and longevity.
Innovation Solution
Incorporating a resilient member between the brush and the brush holder, which provides bi-directional sliding contact and maintains a consistent electrical pathway, reducing deposit formation and eliminating the need for wire shunts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a brush slides within a brush box to maintain contact, then continuing contact between brush and conductive surface is achieved, but deposits of brush material build up on the inner surface of the brush box restricting sliding movement
Solution Approach 1:
The patent extracts the harmful sliding contact interface by removing the brush from direct contact with the brush box. Instead, the brush contacts a resilient member that is isolated from the brush box, thereby eliminating the source of deposit buildup while maintaining electrical contact functionality.
Solution Approach 2:
The patent introduces a resilient member as an intermediary between the brush and the brush box. This mediator absorbs the sliding movement and prevents direct contact between the brush and brush box, thereby preventing deposit formation while still allowing the brush to maintain contact with the conductive surface.
2Reliability
If wire shunts are attached to the brush to provide electrical current path, then electrical connectivity is achieved, but the resistance varies as the brush wears and length changes
Solution Approach 1:
The patent merges the electrical conduction function with the mechanical support function by making the resilient member both structurally supportive and electrically conductive. This integration eliminates the need for separate wire shunts and ensures that the electrical pathway length remains constant regardless of brush wear.
Solution Approach 2:
The resilient member serves multiple functions simultaneously: it provides mechanical support to maintain brush position, enables sliding contact for continued electrical connection, and serves as the electrical conduction path itself. This multi-functionality eliminates the need for separate wire shunts and ensures stable resistance.
3Adaptability or versatility
If the brush is allowed to wear down during operation, then the brush adapts to the conductive surface, but the distance between wear surface and shunt attachment point decreases causing resistance variability
Solution Approach 1:
The patent makes the electrical pathway dynamic by integrating it into the resilient member that moves with the brush. As the brush wears and moves, the resilient member flexes to maintain a constant electrical connection point, ensuring stable resistance while allowing the brush to adapt to the conductive surface.
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 enhances contact quality, reduces wear-related issues, and maintains a consistent electrical resistance throughout the brush's lifecycle, improving the reliability and performance of electrical devices.
Implementation Method 1
a resilient member interposed between at least a portion of a brush and at least a portion of a brush holder
Implementation Method 2
the resilient member may be a conductive member forming an electrical pathway between the brush and the brush holder for transferring an electrical current between the brush and the brush holder
Data Source
AI summary
Disclosed is a resilient member for use in a brush holder assembly. The resilient member may be positioned between at least a portion of a brush and at least a portion of a brush holder. For example, the resilient member may separate or isolate one or more sides of a brush from an adjacent surface of a brush holder. In some embodiments, the resilient member may prevent at least one side of a brush from impacting an adjacent surface of a brush holder. In some embodiments, the resilient member may be a conductive member forming an electrical pathway between the brush and the brush holder for transferring an electrical current between the brush and the brush holder.