Detachable Crank and Slider Ejector for Modular Connectors
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Solution Overview
Problem
Inserting high pin count connectors in modular computing and electrical equipment is difficult due to frictional forces, and delicate components can be damaged by improper insertion.
Innovation Solution
A mechanism featuring a first and second link connected to a chassis and faceplate respectively, with a pivot pin and slot system that allows for controlled movement and interlocking lobes to ensure secure connection without damaging components, applying force to overcome frictional forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual insertion is used for high pin count connectors, then the modular components can be connected, but frictional forces make insertion difficult and delicate components may be damaged
Solution Approach 1:
The patent employs a dynamic insertion mechanism with a cam-driven lever system that transforms manual lever motion into controlled linear insertion force. The mechanism includes a movable arm that pivots to apply progressive force to the connector, converting rotational motion into the linear motion needed for insertion while maintaining controlled speed and pressure throughout the process
Solution Approach 2:
The mechanism performs preliminary alignment and gradual force application before full insertion. The lever system progressively engages the connector, initially applying minimal force to overcome static friction, then gradually increasing force as the connector seats into the receptacle. This staged approach prevents sudden stress spikes that could damage delicate components
2Force
If high force is applied to overcome frictional forces during insertion, then connectors can be inserted, but delicate components may be damaged
Solution Approach 1:
The cam-driven mechanism dynamically adjusts the insertion force throughout the process. As the lever moves through its arc, the cam geometry naturally modulates the force applied to the connector, providing higher force when needed to overcome friction and lower force during critical seating phases. The mechanical advantage varies continuously with lever position
Solution Approach 2:
The mechanism incorporates compliance elements and progressive engagement features that cushion the insertion process. The lever system is designed to absorb and distribute forces, preventing sharp force spikes. The gradual engagement of the connector with the receptacle includes built-in compliance that accommodates minor misalignments without transmitting damaging forces to delicate components
3Device complexity
If a simple connection mechanism is used, then the device complexity is low, but it cannot apply substantial force to overcome frictional forces
Solution Approach 1:
The mechanism employs cam surfaces with specific curvature profiles to generate mechanical advantage. The cam's curved geometry transforms the lever's rotational motion into linear insertion force, with the cam profile designed to provide increasing mechanical advantage as insertion progresses. This curved surface interaction enables high force generation from moderate lever input forces
Solution Approach 2:
The mechanism converts rotational motion in one dimension (lever pivoting) into linear insertion force in another dimension (connector movement). This dimensional transformation allows the system to generate substantial insertion force through lever arm multiplication and cam surface geometry without requiring complex multi-axial mechanisms
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 mechanism enables secure and efficient connection of modular components by applying substantial force to overcome frictional forces, ensuring proper alignment and preventing damage during assembly, while maintaining secure retention without causing unnecessary stress on components.
Implementation Method 1
crank and slider type insertion and ejection mechanisms
Implementation Method 2
applying substantial force to overcome frictional forces
Implementation Method 3
overcome frictional forces
Data Source
AI summary
A mechanism for connecting a first object, such as a chassis and/or motherboard, to a second object, such as a faceplate and/or daughterboard. A first link may be connected to the first object and a second link may be connected to the second object. The second link may have a slot and the first link may have a pin which is releasably connectable to the slot to form a pivot connecting the first link to the second link. The pin may be releasable from the slot at a first point of travel of the pivot and the pin may not be releasable from the slot at a second point of travel of the pivot. The first link may include a first retaining lobe and the second link may include a second retaining lobe disposed to interlock with the first retaining lobe.