SFP Latching System Side-Actuated Release Trigger

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Solution Overview

Problem

Small-form pluggable latching systems face challenges in mechanical simplicity, ease of manufacture, and intuitive operation due to confined installation conditions and accessibility constraints, necessitating a reliable and easy-to-use release mechanism for modules in small-form pluggable sockets.

Innovation Solution

A resilient catch mechanism with a securement aperture and a release trigger system, including a securement tang and actuator, allows for easy insertion and release of modules by deforming the catch and using a sliding actuator with stabilization legs and a catch deflector to displace the catch away from the latching position, facilitating module removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a latching system is designed for secure retention, then reliability of connection is improved, but ease of release operation deteriorates due to confined space and accessibility constraints

Engineering Contradiction:
Improveconnection reliabilityVSAvoidrelease trigger accessibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The release trigger mechanism is designed to operate in a lateral dimension rather than requiring access from the front or top of the receptacle. The trigger extends through the side wall of the receptacle, allowing release operation from the side, which improves accessibility in confined installations while maintaining secure latching when engaged.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

A resilient catch element acts as an intermediary between the securement tang and the release trigger. The catch can be deformed by the trigger to release the latching connection, providing a mechanical mediation that allows reliable retention during normal operation while enabling easy release when triggered.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a complex release trigger mechanism is used to ensure reliable release, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improverelease mechanism operationVSAvoidlatching system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The resilient catch element is self-actuating through its elastic properties. When the release trigger is activated, the catch automatically deforms and releases the securement tang without requiring additional components or complex mechanisms. The elasticity of the catch itself provides the necessary force and motion for release.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The release function is extracted as a separate, simple trigger mechanism that operates independently from the main latching structure. The trigger can be a simple actuator that applies force to the resilient catch, separating the release function from the retention function and allowing each to be optimized independently.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of manufacture

If a resilient catch mechanism is used for securement, then ease of manufacture is improved, but manufacturing precision requirements worsen due to deformation control

Engineering Contradiction:
Improvelatching system manufactureVSAvoidcatch deformation control
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The resilient catch is designed with specific geometric parameters (thickness, length, cross-section) that determine its elastic properties. By carefully selecting these parameters, the catch achieves the required balance between providing sufficient retention force when engaged and allowing easy deformation when released, while remaining manufacturable with standard tolerances.

Inventive Principle:
Principle #35Parameter changes

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 solution provides a mechanically simple, cost-effective, and intuitive release mechanism that ensures easy accessibility and reliable operation, allowing for efficient insertion and removal of modules from small-form pluggable receptacles while maintaining secure connections.

Implementation Method 1

A resilient catch mechanism with a securement aperture and a release trigger system, including a securement tang and actuator, allows for easy insertion and release of modules by deforming the catch

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS7294004B1Latching system for small-form pluggable device
Publication Date: 2007.11.13 II VI DELAWARE INC
  • US7294004B1 patent drawing
  • US7294004B1 patent drawing
  • US7294004B1 patent drawing

AI summary

A latching system for a small from pluggable receptacle that uses a securement recess in a resilient catch to secure a casing in the receptacle includes on a lateral surface of the casing a securement tang that is captured in the securement recess and a release trigger on a surface of the casing located outside the receptacle. The release trigger includes a mounting bridge defining a guide passage oriented toward the securement tang and an actuator slidably disposed in the guide passage for movement in alignment with the securement tang. A catch deflector extending centrally from the actuator toward the securement tang has a free end configured to displace the catch away from the casing when cause by an operator to move toward the securement tang.