Self-Winding Cable Reel for Server Drawer Power Management
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Solution Overview
Problem
The existing solutions for managing power cables in computer server drawers are cumbersome and inefficient, as they require time-consuming setups and significant space, and often result in cable damage or bunching, preventing full closure of the drawer.
Innovation Solution
A compact, self-winding cable reel with a coil spring mechanism and rotatable barrel terminals that maintain electrical contact, allowing for unidirectional winding and unwinding without manual control, and supporting a higher amperage range than prior art.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If articulated arms and harnesses are used to manage cable length, then cable damage and bunching are prevented, but device complexity and space requirements increase
Solution Approach 1:
The reel automatically winds and unwinds the cable based on drawer movement, eliminating the need for manual intervention or complex articulated mechanisms. The spring-loaded reel self-regulates cable length, providing reliability through automated cable management rather than complex mechanical structures.
2Reliability
If articulated arms and harnesses are used to manage cable length, then cable damage and bunching are prevented, but device complexity and space requirements increase
Solution Approach 1:
The cable reel is compactly integrated within the drawer assembly, with the spool nested inside a housing that fits within the drawer's footprint. The cable winds and unwinds within this compact nested structure, preventing cable damage without requiring additional external space for articulated arms or harnesses.
3Ease of operation
If a long power cable is used to allow drawer movement, then drawer accessibility is improved, but cable damage and bunching occur when pushing the drawer back
Solution Approach 1:
The cable length is dynamically adjusted through the winding mechanism. When the drawer is pulled out, the spring-loaded reel automatically unwinds to provide sufficient cable length for accessibility. When the drawer is pushed back, the reel automatically winds the cable, maintaining cable integrity and preventing bunching or damage throughout the movement cycle.
4Area of stationary object
If a compact cable reel is used to minimize space, then space is conserved, but cable connection and assembly ease may be reduced
Solution Approach 1:
The cable reel is designed as a modular assembly with distinct components: a spool for winding, a spring mechanism for tension, a housing for protection, and connection terminals for electrical attachment. This segmentation allows each component to be manufactured separately and assembled into a compact unit that conserves space while maintaining ease of assembly through standardized 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
The solution provides a reliable, compact power source with minimal unreeled cable length, conserving space and preventing cable damage, while enabling easy cable attachment and connection, and supporting high amperage ranges.
Implementation Method 1
The reel housing may have a center cylinder with an opening for accepting an assembly for connecting a power cable to the reel and power connections
Implementation Method 2
The return barrel terminal may be rotateable with respect to the return contact while maintaining electrical contact with the return contact and the power barrel terminal may be rotateable with respect to the power contact while maintaining electrical contact with the power contact
Data Source
AI summary
A reel for connecting a cable to the reel and power connections that includes a winding reel housing that has a biasing member and a connection assembly. The assembly is received in the housing and has an insulator with two recesses, a return barrel terminal and a power barrel terminal. One of the insulator recesses receives a return barrel terminal and the other insulator recess receives a power barrel terminal. The return barrel terminal is connected to a return contact, and the power barrel terminal is connected to a power contact. The power contact is connected to a power output member and the return contact is connected to a return output member. The return barrel terminal is rotatable with the return contact while maintaining electrical contact with the return contact and the power barrel terminal is rotatable with the power contact while maintaining electrical contact with the power contact.