Latching Device for Server Assembly Clamping Force Control
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Solution Overview
Problem
Conventional methods for assembling computer servers with three parts face challenges such as difficult access to fasteners, lack of control over compressive force, and increased maintenance costs due to the need for dynamometric screwdrivers and potential screw loss, especially when servers are located in crowded computer rooms.
Innovation Solution
A system with a centralized latching device that uses elastic return means and retaining mechanisms to maintain the assembly of three parts in position, allowing for easy control of clamping force without requiring access to the back of the assembly, featuring a latching device that slides on a joining member and is operated manually to exert a predetermined compressive force on the intermediate part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws or similar fastening means are used to attach the intermediate module to the outer modules, then the assembly strength is improved, but the access to fasteners becomes difficult and maintenance complexity increases
Solution Approach 1:
The patent inverts the conventional fastening approach by placing the latching device in the intermediate module rather than having fasteners on the outer modules. This allows the fastening mechanism to be accessed from the intermediate module's interior, making fasteners easily accessible during maintenance while maintaining assembly strength through the latching mechanism.
Solution Approach 2:
The latching device acts as an intermediary mechanism between the intermediate module and outer modules. It provides a centralized fastening point that is easily accessible from the intermediate module, eliminating the need to access fasteners on the outer modules while maintaining secure connections.
2Quantity of substance
If the assembly is located in a cabinet in the middle of a row, then the server density is improved, but the maintenance cost increases due to difficulty in accessing fasteners on both sides
Solution Approach 1:
The patent inverts the access paradigm by making the fastening mechanism accessible from the intermediate module's interior rather than from the outer modules. This allows maintenance personnel to access and operate fasteners from one side of the assembly, eliminating the need to access both sides when the server is located in a cabinet in the middle of a row.
Solution Approach 2:
The latching device is designed to be self-contained within the intermediate module, allowing maintenance personnel to service the fastening mechanism from the intermediate module's interior without requiring access to the outer modules or both sides of the assembly.
3Manufacturing precision
If the tightening force of screws is controlled to ensure proper assembly, then the assembly precision is improved, but the operation complexity increases due to the need for dynamometric screwdrivers
Solution Approach 1:
The latching device incorporates elastic return means that automatically provide the necessary tightening force when the latching lever is actuated. This eliminates the need for controlled tightening procedures and specialized tools like dynamometric screwdrivers, as the device self-regulates the assembly precision through its elastic mechanism.
Solution Approach 2:
The patent changes the parameter of force application from manual controlled tightening to automatic elastic force. The elastic return means provide a predetermined force that is sufficient for proper assembly, eliminating the need for complex tightening control procedures and specialized tools.
4Reliability
If screws and fasteners are used for joining modules, then the connection reliability is improved, but the device complexity increases due to multiple fastening components
Solution Approach 1:
The patent merges multiple fastening functions into a single latching device located in the intermediate module. This centralized latching mechanism consolidates the fastening components that would otherwise be distributed across multiple locations, reducing the overall number of fastening components while maintaining connection reliability through the elastic return means.
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 solution enables tool-free assembly and disassembly, reduces maintenance time, and ensures stable connections between circuit boards by providing controlled compressive force, all while being accessible from one side, thus addressing the limitations of existing methods.
Implementation Method 1
the latching device, which is capable of sliding on the joining member, is mounted inside a second part of the assembly called the front part and joined by elastic return means to the front part
Data Source
AI summary
A system for maintaining an assembly of three aligned parts (1, 2, 3) in position, wherein a latching device (4) receives a joining member (6) integral with a rear part (1) of the assembly. The latching device (4) can slide on the joining member and is mounted inside a front part (3) and joined by springs (5) to the front part. The system includes means for moving the locking device, which engages with a locking element of the joining member (6) when the three parts (1, 2, 3) are joined, so as to move the device (4) rearward into a position (B) wherein the springs (5) exert a forward return force on the locking device. Retaining means inside the device (4) allow locking of the device in the second position and clamping of an intermediate part (2) between the front part (3) and the rear part (1).