Tool-less IO Bracket Lever Mechanism for Add-in Modules
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Solution Overview
Problem
Conventional add-in modules for computer devices, such as PCIe, require tools like screwdrivers for securing and removing modules, which complicates manufacturing and servicing.
Innovation Solution
A lever and slider mechanism integrated into the IO bracket allows for tool-less engagement and disengagement from a mounting panel, using a base, wedge slider, geared bar, and spring to secure or release the module without screws or tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional screw-based mounting is used, then the add-in module can be securely fixed to the chassis, but the process requires tools and is time-consuming
Solution Approach 1:
The mounting mechanism transitions from a static screw-based system to a dynamic lever-operated system. The lever can be rotated between a first position (for engagement) and a second position (for disengagement), enabling quick tool-less mounting and removal of the add-in module without time-consuming screw operations
Solution Approach 2:
The mechanism uses a spring-loaded wedge slider that automatically engages with the mounting panel when the lever is in the first position. The spring provides the necessary biasing force to maintain engagement without requiring additional tools or manual intervention, making the system self-servicing
2Ease of operation
If conventional screw-based mounting is used, then the add-in module can be securely fixed, but the process is complex and requires multiple steps
Solution Approach 1:
The mounting mechanism is divided into distinct functional segments: the lever for operation, the wedge slider for engagement, the spring for biasing, and the geared bar for motion transmission. This segmentation allows each component to perform its specific function efficiently, simplifying the overall operation to a single lever rotation while maintaining secure mounting
Solution Approach 2:
Instead of using threads that require rotational motion to advance (screws), the mechanism inverts the approach by using a lever that rotates to translate linear motion through the geared bar and wedge slider. This inversion eliminates the need for threaded fasteners and multiple fastening steps
3Ease of manufacture
If a lever and slider mechanism is used, then tool-less operation is enabled, but the mechanism structure becomes more complex
Solution Approach 1:
The lever serves multiple functions: it acts as the operating handle, transmits motion through the geared bar, and controls the engagement and disengagement of the wedge slider. This multi-functionality reduces the need for separate components for each function, simplifying the overall assembly despite the innovative 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 mechanism enhances the efficiency of manufacturing and servicing by enabling easy and secure attachment and detachment of add-in modules without the need for tools, improving handling and installation processes.
Implementation Method 1
a biasing element disposed between the wedge slider and an outer surface of the bracket. The biasing element applies a force on the wedge slider in a direction away from the outer surface of the bracket
Implementation Method 2
The lever and slider mechanism also includes a geared bar connected to the base and operably coupled to the gear. Rotating the lever from the first position to the second position causes the gear to engage the geared bar causing the geared bar to move vertically
Implementation Method 3
The geared bar has an angled end abutting and in substantial contact with the wedged end protrusion. Moving the geared bar vertically allows movement along the contact between the angled end of the geared bar and the wedged end protrusion of the wedge slider
Data Source
AI summary
An apparatus and method for engaging a mounting panel of a computer device includes a bracket, as well as a lever and slider mechanism connected to the bracket. The lever and slider mechanism includes a base, a wedge slider, a lever, a geared bar, and a biasing element. The base is connected to the bracket. The wedge slider is connected to the bracket and disposed immediately below the base. Rotating the lever from a first position to a second position causes a gear to engage the geared bar, causing the geared bar to move vertically. The rotating allows movement along the contact between an angled end of the geared bar and a wedged end protrusion of the wedge slider such that the biasing element pushes the wedge slider away from the bracket and allows the wedge slider to engage an opening in a mounting panel.