Pulley-Assisted Module Removal in Dense Server Chassis
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Solution Overview
Problem
Many information handling systems with removable modules, such as air movers, are heavy and lack sufficient handles or grip features, making it difficult for users to effectively remove these modules due to space constraints.
Innovation Solution
A pulley assembly is integrated into the chassis, featuring a rotatable handle that provides a mechanical advantage via a pulley subsystem, allowing for the partial removal of modular resources with reduced force requirements, as the modular resource rests on a carrier that translates with the applied force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If removable modules are made heavy-duty to hold valuable components, then the module's load-bearing capacity is improved, but the module becomes too heavy for users to effectively remove
Solution Approach 1:
A pulley assembly acts as an intermediary mechanical device between the user and the heavy module. The pulley system with cable and handle provides mechanical advantage, allowing users to lift and remove modules that would otherwise be too heavy to handle directly, thus resolving the contradiction between module weight and ease of removal
2Ease of manufacture
If the module design is simplified to reduce complexity, then manufacturing cost is reduced, but sufficient handles or grip features cannot be provided for effective removal
Solution Approach 1:
The pulley assembly serves as an external intermediary gripping mechanism that does not require integration into the module structure itself. This allows the module to maintain its simple, clean design while the separate pulley system provides the necessary grip and leverage for removal, resolving the contradiction between manufacturing simplicity and operational ease
3Quantity of substance
If space within the chassis is optimized for component density, then the information handling system's capacity is improved, but insufficient space remains for handles or grip features on modules
Solution Approach 1:
The pulley assembly is positioned in the space between the user and the module, utilizing the available headroom in the chassis rather than requiring lateral space on the module itself. This intermediary approach allows high component density within the chassis while still providing effective removal capability through the pulley mechanism
4Ease of operation
If a pulley assembly is added to provide mechanical advantage, then the force required for removal is reduced, but the device complexity increases
Solution Approach 1:
The pulley assembly introduces a relatively simple intermediary mechanism consisting of a pulley, cable, and handle. This straightforward mechanical system provides significant force reduction through mechanical advantage while adding minimal complexity compared to the alternative of redesigning the entire module structure
Solution Approach 2:
The removal function is segmented from the module itself and placed in a separate, dedicated pulley assembly. This segmentation allows the module to remain simple while the specialized pulley mechanism handles the complex task of lifting heavy modules, dividing the system into optimally designed components
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 pulley assembly significantly reduces the effort needed to remove modular components by providing a mechanical advantage, allowing for easier handling and installation of heavy modules, thereby addressing the grip and space concerns in traditional systems.
Implementation Method 1
force applied to the handle when the handle is in the open position provides a mechanical advantage via the pulley subsystem to mechanically translate the carrier
Data Source
AI summary
An information handling system may include a chassis, a bay within the chassis for receiving a modular information handling resource, and a pulley assembly within the chassis and adjacent to the bay, the pulley assembly comprising a handle mechanically rotatable between a closed position and an open position, a pulley subsystem comprising a pulley cable mechanically coupled to the handle, and a carrier mechanically coupled to the pulley subsystem and configured such that the modular information handling resource rests on the carrier when the modular information handling resource is installed in the information handling system. The pulley assembly may be arranged such that force applied to the handle when the handle is in the open position provides a mechanical advantage via the pulley subsystem to mechanically translate the carrier in accordance with the force and the mechanical advantage to cause at least partial removal of the modular information handling resource from the bay in response to the force.