Pluggable Module Heat Sink With Oblique Sliding Contact
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Solution Overview
Problem
Conventional heat dissipation apparatuses for pluggable heating components, such as optical modules, suffer from high thermal resistance, poor heat dissipation efficiency, and inconvenient plugging/unplugging due to unstable contact pressure and large thermal contact resistance.
Innovation Solution
A heat dissipation apparatus with an accommodating part and a heat dissipator assembly, featuring a sliding component and linkage part that guides the heat dissipator to obliquely move towards the heating component during plugging, reducing friction and ensuring close contact for improved thermal conductivity, and includes resetting members to facilitate easy plugging and unplugging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the buckling force of the clip or spring screw is increased to improve attachment effect between heat dissipator and optical module, then thermal contact resistance is reduced, but the optical module cannot be plugged or may be damaged
Solution Approach 1:
The patent employs a dynamic elastic component (spring-loaded push rod) that automatically adjusts the contact force between the heat dissipator and optical module. The spring mechanism provides continuous pressure to ensure thermal contact while allowing the assembly to flex during plugging operations, resolving the contradiction between maintaining strong attachment and enabling easy plugging.
Solution Approach 2:
The patent changes the parameter of contact force from a fixed high value (using clips or spring screws) to a dynamically adjustable value through the elastic component. The spring-loaded mechanism transforms the rigid buckling force into a flexible contact pressure that adapts during plugging, achieving both good thermal contact and ease of operation.
2Ease of operation
If the buckling force is set insufficient to allow easy plugging, then plugging operation is easy, but attachment effect between heat dissipator and optical module is poor
Solution Approach 1:
The elastic component provides dynamic adjustment of contact force, allowing easy plugging while maintaining good attachment. The spring mechanism ensures that during normal operation, sufficient pressure is applied for thermal contact, but during plugging, the elastic nature allows temporary deformation without damage.
3Object-generated harmful factors
If the heat dissipator is mounted above the optical module using clip or spring screw, then heat dissipation function is provided, but thermal contact resistance is large due to poor attachment effect
Solution Approach 1:
The spring-loaded push rod provides continuous dynamic pressure to maintain optimal thermal contact between the heat dissipator and optical module. This elastic pressure ensures consistent thermal coupling without the high buckling forces required by rigid clipping mechanisms, reducing thermal contact resistance while maintaining heat dissipation function.
Solution Approach 2:
The patent replaces the traditional mechanical clipping or spring screw system with a spring-loaded push rod mechanism. This substitution transforms the rigid mechanical attachment into a flexible elastic contact system that naturally conforms to surface irregularities, improving thermal contact and reducing contact resistance.
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 reduces thermal contact resistance, enhances heat transfer performance, and simplifies the plugging/unplugging process, ensuring stable and efficient heat dissipation for pluggable components.
Implementation Method 1
reducing friction and ensuring close contact for improved thermal conductivity
Implementation Method 2
improve heat transfer performance between the heat dissipator and the heating component
Data Source
AI summary
This application provides a heat dissipation apparatus which includes an accommodating part and a heat dissipator assembly. The accommodating part includes an accommodating cavity for accommodating a heating component. The heating component is plugged into the accommodating cavity along a first direction. The heat dissipator assembly includes a heat dissipator, a support, a sliding component, and a linkage part. The support is fixed to the accommodating part. The heat dissipator is connected to the support by using the sliding component. The accommodating part includes a first side surface and a second side surface that are opposite to each other, and the heat dissipator is located on the first side surface. The sliding component includes an oblique slot and a sliding block. The oblique slot gradually approaches the second side surface of the accommodating part along the first direction.