Floating Spacer Assembly for Cable Backplane Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-density cable backplane systems face challenges in cost-effective and reliable assembly due to complex cable management and limited access to components, particularly spacers, which hinder efficient packaging and assembly of large numbers of cable assemblies.
Innovation Solution
A cable backplane system with a backplane featuring guide holes and mounting locations with datum surfaces, coupled with a cable rack and spacer assemblies that include floating spacers and springs, allowing for precise alignment and secure positioning of cable connectors without requiring direct access to individual spacers, enabling easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If cable trays are stacked directly adjacent one another to increase system density, then space utilization is improved, but access to spacers and cable management becomes difficult or impossible
Solution Approach 1:
The spacer assembly is divided into modular components: a fixed support attached to the cable tray, a spring mechanism, and a floating spacer with guide pin. This segmentation allows the floating spacer to be independently positioned and accessed even when cable trays are densely stacked, resolving the contradiction between space utilization and accessibility.
Solution Approach 2:
The guide pin on the floating spacer acts as an intermediary element that engages with the guide hole in the backplane. This intermediary mechanism enables precise positioning and easy access during assembly without requiring direct access to the spacer body itself, allowing dense stacking while maintaining operational accessibility.
2Manufacturing precision
If individual cable assemblies with each cable tray independently reference a specified datum within the chassis, then positioning precision is improved, but assembly complexity increases
Solution Approach 1:
The floating spacer assembly serves multiple functions: it provides precise positioning through the guide pin-gate hole engagement, acts as a mounting mechanism for cable connectors, and enables easy assembly/disassembly. This multi-functionality achieves positioning precision without proportionally increasing assembly complexity.
Solution Approach 2:
The spring mechanism automatically biases the floating spacer against the datum surface on the backplane, self-adjusting to achieve precise positioning without requiring complex external alignment procedures. The guide pin automatically engages the guide hole, providing self-aligning precision positioning that simplifies rather than complicates assembly.
3Quantity of substance
If the number of cable assemblies is increased to meet high-speed line requirements, then signal transmission capability is improved, but cable management and packaging difficulty increase
Solution Approach 1:
Multiple cable connectors are grouped together on a single cable tray, with each connector served by its own floating spacer assembly. This merging approach allows high-density cable management by consolidating multiple connections into organized trays rather than managing individual cables separately, reducing overall system complexity while supporting high-speed transmission requirements.
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 system allows for precise positioning and secure mating of cable connectors with line and switch cards, improving signal integrity and reducing assembly complexity, while enabling cost-effective and reliable high-speed signal transmission.
Implementation Method 1
Each spacer assembly has a floating spacer and a spring pressing against the floating spacer in a biasing direction. The spring presses the floating spacer in the biasing direction such that the guide pin is received in the guide hole and the front of the floating spacer abuts against the datum surface.
Data Source
AI summary
A cable backplane system includes a backplane having a plurality of openings and mounting locations with guide holes and a datum surface. A cable rack is coupled to the backplane. The cable rack includes a tray having a frame and spacer assemblies coupled to the tray. The spacer assemblies are coupled to the backplane at corresponding mounting locations. Each spacer assembly has a floating spacer and a spring pressing the floating spacer in a biasing direction. The floating spacer is allowed to float relative to the frame in the biasing direction. The floating spacer has a guide pin extending from a front thereof. The spring presses the floating spacer in the biasing direction such that the guide pin is received in the guide hole and the front of the floating spacer abuts against the datum surface.