Interface Module Heat Sink With Vibration Damping Coupling
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Solution Overview
Problem
Existing connector systems face challenges in dissipating heat effectively, particularly for active cable assemblies like QSFPDD modules, which generate significant heat, and are prone to damage from oscillations during uncontrolled environments.
Innovation Solution
A heat sink apparatus with a first portion in thermal contact with a cage and a second portion extending beyond the cage's dimensions, coupled with a dampener to absorb perpendicular oscillations and a coupler to restrict parallel movements, ensuring effective heat dissipation and protection against damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the heat sink dimensions are increased to dissipate heat from high-power modules (e.g., QSFPDD), then heat dissipation effectiveness is improved, but the heat sink extends beyond the cage surface area requiring additional space
Solution Approach 1:
The heat sink utilizes the vertical dimension by extending downward from the cage surface rather than only expanding in the horizontal plane. The second portion of the heat sink projects below the circuit board plane, allowing increased heat dissipation surface area without increasing the horizontal footprint beyond the cage boundaries.
2Ease of operation
If the heat sink is made detachable for ease of installation, then ease of operation is improved, but reliability is worsened due to potential accidental detachment from oscillations
Solution Approach 1:
A dampener is provided between the heat sink and circuit board to absorb oscillations before they can cause detachment. This cushioning element is installed in advance to protect the detachable connection from harmful vibrations during transport or operation, maintaining both ease of installation and reliability.
Solution Approach 2:
The dampener acts as an intermediary element between the heat sink and the circuit board, mediating the connection by absorbing mechanical oscillations. This intermediary component protects the detachable attachment from vibration-induced failure while preserving the ease of installation benefit.
3Temperature
If the heat sink second portion extends beyond the cage dimensions for better heat dissipation, then heat dissipation effectiveness is improved, but the heat sink becomes more susceptible to damage from oscillations in uncontrolled environments
Solution Approach 1:
The dampener is positioned to absorb oscillations before they can transmit to the heat sink's extended second portion. This beforehand cushioning protects the vulnerable extended structure from vibration damage while maintaining its heat dissipation functionality.
Solution Approach 2:
The dampener functions as a flexible element that can deform to absorb oscillation energy. This flexible component protects the rigid extended heat sink structure from vibration-induced damage while allowing the heat sink to maintain its extended configuration for optimal heat dissipation.
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 heat sink apparatus enhances heat dissipation and prevents accidental detachment or collision damage by controlling oscillations, maintaining system stability in uncontrolled environments.
Implementation Method 1
a first portion configured to couple into thermal contact with a second surface of the cage
Implementation Method 2
a dampener coupled to the second portion of the heat sink, wherein the dampener is configured to dampen oscillations of the second portion in a direction perpendicular to the plane of the circuit board
Data Source
AI summary
Embodiments described herein relate to apparatuses for reducing the effect of oscillations of a heat sink. A heat sink apparatus is provided for use with an interface module comprising a cage configured to receive a pluggable signal connector, wherein the cage comprises a first surface configured to couple to a circuit board. The heat sink apparatus comprises a heat sink, wherein the heat sink comprises: a first portion configured to couple into thermal contact with a second surface of the cage; a second portion, wherein the second portion is configured to extend beyond at least one of the dimensions of the cage in a plane parallel to the circuit board; a dampener coupled to the second portion of the heat sink, wherein the dampener is configured to dampen oscillations of the second portion in a direction perpendicular to the plane of the circuit board, and a first coupler coupled to the second portion of the heat sink for providing physical coupling between the heat sink and a second coupler on the circuit board during oscillations of the second portion in directions parallel to the plane of the circuit board.