Brush Holder Spring Clip Segmentation for Tool-Free Maintenance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing brush holder assemblies in electrical devices have a fixed spring attachment, making it difficult to replace the spring when the brush wears down, requiring additional tools and time for maintenance.
Innovation Solution
A brush holder assembly with a removable spring clip and a spring retainer that allows the spring to be easily detached and replaced without the need for tools, using a spring clip that is slidably disposed in channels of the brush holder for secure attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spring is fixedly attached to the spring clip using rivets, welds or solder, then the spring remains securely attached during operation, but the spring becomes difficult to replace when the brush wears down
Solution Approach 1:
The spring attachment system is divided into separate components: the spring clip, the spring, and the spring retainer. This segmentation allows the spring to be easily detached and replaced by removing the retainer, while maintaining secure attachment during operation through the coordinated interaction of these components.
Solution Approach 2:
The spring retainer is designed to be movable between a retained position (where it secures the spring to the spring clip) and a removed position (where the spring can be detached). This dynamic capability enables easy maintenance while ensuring reliable attachment during normal operation.
2Reliability
If the spring is fixedly attached to the spring clip, then the spring remains securely attached during operation, but additional tools and time are required for maintenance
Solution Approach 1:
By segmenting the attachment system into a spring retainer that can be independently removed, the maintenance process is simplified to only requiring the removal of the retainer component, eliminating the need for tools and extensive time that would be required to cut, drill, or heat-treat fixed attachments.
Solution Approach 2:
The spring retainer is extracted as a separate, removable component from the spring attachment system. This allows the spring to be quickly accessed and replaced by simply removing the retainer, dramatically reducing maintenance time without compromising the security of spring attachment during operation.
3Ease of repair
If a removable spring clip design is used, then the spring can be easily replaced, but the attachment security may be compromised
Solution Approach 1:
The spring retainer merges multiple functions into a single component: it secures the spring to the spring clip, guides the spring into proper positioning, and provides a removable interface for maintenance. This merging ensures secure attachment while maintaining ease of replacement.
Solution Approach 2:
The spring retainer acts as an intermediary component between the spring and the spring clip. It provides a secure mechanical connection during operation while allowing for easy detachment when removed, thus mediating between the conflicting requirements of attachment security and ease of replacement.
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
Facilitates quick and tool-free replacement of the spring, reducing maintenance time and improving the operational efficiency of brush holder assemblies by allowing for easy access and replacement of worn-out components.
Implementation Method 1
a spring, such as a constant force spring, presses against the upper surface of the brush to maintain contact between the lower surface of the brush and the conductive surface
Implementation Method 2
The spring clip includes a first edge slidably disposed in the first arcuate channel of the brush holder and a second edge slidably disposed in the second arcuate channel of the brush holder
Data Source
AI summary
A brush holder assembly of an electrical device is disclosed. The brush holder assembly includes a brush holder, a spring clip removable from the brush holder, a spring detachably coupled to the spring clip, and a spring retainer for retaining the spring on the spring clip. The spring clip is slidably disposed in channels of the brush holder. The detachable spring includes an end region extending around the end of the spring clip such that a first portion of the spring is facing a first side of the spring clip and a second portion of the spring is facing a second side of the spring clip. The spring retainer extends around the end of the spring clip over the end region of the spring.