D-Shaped Fastener Extender for Server Board Alignment
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Solution Overview
Problem
Existing server rack systems face challenges in securely attaching system boards to chassis, as they require precise alignment and rotation prevention, especially when accommodating multiple types of system boards with varying dimensions, which can be cumbersome and inefficient.
Innovation Solution
A fastener system comprising a fastener body with a mating member and a threaded member, where the mating member extends radially to position the fastener on the chassis and includes a 'D' shaped extender to prevent rotation, combined with a spool that engages with the threaded member to securely attach a sub-pan with the system board, allowing for easy alignment and secure attachment across different system board types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fasteners are used to attach system boards to chassis, then secure attachment is achieved, but precise alignment and rotation prevention become cumbersome and inefficient
Solution Approach 1:
The fastener body includes a D-shaped extender that prevents rotation by providing an asymmetric geometry. The D-shaped extender has a flat side and a curved side, allowing it to engage with a corresponding slot in the chassis that only accepts the fastener in a specific rotational orientation, thereby preventing rotation without requiring additional alignment steps
2Reliability
If traditional fasteners are used to attach system boards to chassis, then secure attachment is achieved, but accommodating multiple system board types with varying dimensions becomes cumbersome
Solution Approach 1:
The fastener system is designed with a D-shaped extender and corresponding slot configuration that provides universal compatibility across multiple system board types. The D-shaped geometry and slot arrangement create a standardized interface that can accommodate various board dimensions and configurations, allowing the same chassis to accept different board types without requiring modification of the fastening mechanism
3Reliability
If precise alignment is required for fastener attachment, then secure attachment is achieved, but assembly time and complexity increase
Solution Approach 1:
The D-shaped extender is pre-formed as an integral part of the fastener body, with the asymmetric geometry already configured during manufacturing. This preliminary action of pre-shaping the fastener with rotation-preventing geometry eliminates the need for alignment adjustments during assembly, as the D-shaped extender naturally guides the fastener into the correct orientation when inserted into the corresponding slot
Data Source
AI summary
A fastener useable with a system board is provided herein. The fastener includes a fastener body and a spool. The fastener body has a mating member at one end and a threaded member at an opposite end. The mating member extends from the fastener body and positions the fastener body on a chassis. The spool engages with the threaded member of the fastener body and is secured to the chassis.