Field-Replaceable PCB Cable Assembly With Cantilever Beams
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Solution Overview
Problem
Existing transition PCBs used in connectors are not field-replaceable, making on-site maintenance and upgrades difficult and requiring costly re-soldering of connections.
Innovation Solution
A field-replaceable PCB cable connector assembly featuring cantilever beams that straddle and securely attach to male or female contacts within an electrical connector, allowing for easy detachment and replacement by loosening fastening members, with a housing design that includes offset notches for stabilization and guide rails for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If traditional transition PCBs are used to attach cables to connectors, then electrical connections are established, but the PCBs cannot be replaced in the field and require costly re-soldering for maintenance
Solution Approach 1:
The invention divides the traditional monolithic PCB connector into separable components: a cable assembly with PCB segments and a connector assembly with beam segments. This segmentation allows the PCB to be detached and replaced independently from the connector, enabling field replacement while maintaining electrical connectivity through the beam interface.
Solution Approach 2:
The conductive beams serve as an intermediary element between the cable assembly and the connector housing. These beams provide both mechanical support and electrical connection, mediating the interface between replaceable PCB segments and the permanent connector structure, thus enabling easy replacement without affecting the overall connector integrity.
2Loss of time
If PCBs are made field-replaceable with detachable connections, then maintenance costs are reduced and on-site replacement is enabled, but the structural complexity and number of components increase
Solution Approach 1:
The invention merges multiple functions into the beam structure: mechanical support, electrical conduction, and positioning alignment. By combining these functions into a single integrated component, the number of separate parts is reduced despite the field-replaceable design, and the replacement process is simplified to a single detachment action.
Solution Approach 2:
The beam structure is designed as a universal interface that can accommodate different PCB cable assemblies while maintaining the same connection mechanism. This multi-functionality allows the same connector housing and beam structure to work with various PCB configurations, reducing the need for specialized components for each application.
Data Source
AI summary
A field-replaceable printed circuit board (“PCB”) cable assembly comprises at least one field-replaceable PCB, at least one cable, a connector with a plurality of beams, and top and bottom hood portions. A first end of the at least one field-replaceable PCB is attached to the at least one cable, and a second end of the at least one field-replaceable PCB is attached to the plurality of beams. The at least one field-replaceable PCB can be replaced by disassembling the hood portions, detaching the at least one field-replaceable PCB from the plurality of beams, and attaching at least one new field-replaceable PCB.