Chassis Drawer Latch-Cam Assembly for Higher Module Density
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Solution Overview
Problem
Traditional modular information handling systems face limitations in component density due to the design of latching mechanisms that obstruct access and hinder efficient addition and removal of resources, particularly when the latching mechanism's dimensions interfere with the drawer's movement.
Innovation Solution
A mechanical assembly with a spring latch and cam mechanism is integrated into the drawer, allowing the latch to deflect perpendicular to the drawer's direction of translation, enabling easier access and removal of modular information handling resources while maintaining the latch in a biased position without external force, thus reducing the space required for the latching mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional latching mechanism with large dimension perpendicular to drawer movement is used, then the drawer can be securely latched, but the component density is limited due to space occupation
Solution Approach 1:
The latching mechanism transitions from a traditional design where the latch extends perpendicular to the drawer movement direction to a design where the latch's most significant dimension is oriented parallel to the drawer movement direction. This dimensional reorientation allows the latch to occupy less space in the perpendicular direction, thereby increasing component density while maintaining latching functionality through the cam mechanism that deflects the latch during drawer insertion and removal.
2Device complexity
If access to information handling resources is limited to the periphery of the chassis, then the structure is simple, but the accessibility of components is reduced
Solution Approach 1:
The chassis is segmented into multiple drawers, each drawer providing independent access to information handling resources. This segmentation allows users to access components from the front of the chassis by opening individual drawers, rather than requiring access only from the periphery. Each drawer acts as an independent access module, improving overall component accessibility while maintaining structural organization.
3Force
If the spring latch has its most significant dimension perpendicular to the direction of translation, then the latching force is maximized, but the space required for the mechanism increases
Solution Approach 1:
The spring latch is reoriented so that its most significant dimension is parallel to the drawer translation direction rather than perpendicular to it. The cam mechanism compensates for the reduced perpendicular dimension by providing mechanical advantage through rotational motion, allowing the latch to maintain adequate latching force while occupying less space in the perpendicular direction, thus reducing the overall volume required for the latching mechanism.
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
This design enhances the component density within the chassis by allowing for smoother and more efficient access to modular resources, reducing the limitations imposed by traditional latching mechanisms, thereby improving the overall usability and configuration of the information handling system.
Implementation Method 1
a spring latch mechanically coupled to the cover and having a spring force for maintaining the spring latch in a biased position
Implementation Method 2
a cam mechanically coupled to the handle and responsive to rotational motion of the handle such that as the handle is rotated between the closed position and the open position, the cam causes the spring latch to deflect from its biased position
Data Source
AI summary
A mechanical assembly in a drawer may include a handle rotationally coupled to a cover and configured to rotate between a closed position and an open position relative to the cover. The mechanical assembly may also include a spring latch mechanically coupled to the cover and having a spring force for maintaining the spring latch in a biased position in the absence of mechanical force opposing the spring force, the spring latch having its most significant dimension in a direction perpendicular to a direction of translation of the drawer when the drawer is inserted and removed from a corresponding chassis. The mechanical assembly may further include a cam mechanically coupled to the handle and responsive to rotational motion of the handle such that in the closed position of the handle, the spring latch is in its biased position, and as the handle is rotated between the closed position and the open position, the cam causes the spring latch to deflect from its biased position in a direction perpendicular to the direction of translation.