Tool-less Backplane Retention via Elastic Two-Stage Mating
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Solution Overview
Problem
The external structures of hard disk drives and card assemblies are difficult to service due to their non-manipulable sub-structures, requiring specialized tools and knowledge for even basic repairs, which are often unavailable.
Innovation Solution
A tool-less backplane retention system using a housing with a two-stage mating device, where the hub and backplane body are elastically coupled, allowing for easy assembly and disassembly without specialized tools, utilizing a hub mating device and a backplane mating device that engage through a curved installation path with elastic hooks to secure the assembly in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional sub-structures are used for hard disk drives and card assemblies, then structural integrity is maintained, but ease of service and assembly deteriorates requiring specialized tools and knowledge
Solution Approach 1:
The retention system is divided into distinct modular components: a hub assembly, a backplane assembly, and a two-stage mating device. The mating device itself is segmented into a first stage for initial engagement and a second stage for final retention. This segmentation allows each component to be independently manufactured, serviced, and replaced without requiring specialized tools, directly addressing the ease of service requirement while maintaining structural integrity through precise mechanical interfaces.
2Ease of operation
If traditional retention mechanisms are used, then secure retention is achieved, but ease of assembly and disassembly deteriorates requiring specialized tools
Solution Approach 1:
The two-stage mating device incorporates elastic elements that provide dynamic, flexible retention rather than rigid fixed connections. The first stage uses elastic hooks that flex during assembly to engage with the backplane, while the second stage provides additional elastic retention. This dynamic design allows tool-less assembly and disassembly while maintaining reliable retention through the elastic force that continuously holds the assemblies together during operation.
3Ease of repair
If specialized tools and knowledge are required for servicing, then precise assembly is achieved, but accessibility and availability of service deteriorates
Solution Approach 1:
The hub and backplane assemblies are designed with self-aligning features and intuitive mating interfaces that allow end-users to perform assembly and disassembly without specialized tools or technical knowledge. The elastic hooks of the two-stage mating device automatically engage with the backplane features when the assemblies are brought together, and can be easily released by applying gentle pressure. This self-service design eliminates the need for specialized service personnel while maintaining assembly precision through the engineered mechanical interfaces.
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
Enables tool-less service and assembly of hard disk drives and card assemblies, facilitating easy installation and removal by providing a lift-point and ensuring the hub and backplane body remain coupled, thus eliminating the need for specialized tools and knowledge.
Implementation Method 1
the first stage of the two-stage mating device elastically hooked onto the backplane body
Implementation Method 2
the second stage of the two-stage mating device elastically hooked by the housing mating device
Implementation Method 3
the first and second stages of the two-stage mating device biasing the hub and the backplane body to remain coupled
Data Source
AI summary
A method of forming an assembly for tool-less backplane retention and insertion thereof into a housing including a housing mating device through which an installation path for an assembly is defined with a space in which a first part is positioned is provided. The method includes coupling a hub and a backplane body having opposing faces on which a second part and a backplane mating device are respectively disposed. The coupling includes inserting a backplane mating device protruding from one of the opposing faces of the backplane body through a hub mating device defined in the hub. The method further includes forcing a first stage of a two-stage mating device, which includes first and second elastically coupled stages and which extends from the hub, to elastically hook onto the backplane body during a near-completion of the insertion.