Pivot Joint Heat Pipe for Adjustable Thermal Dissipation

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Solution Overview

Problem

Conventional heat dissipating modules face limitations in design flexibility and efficiency due to fixed heat pipe lengths and bending angles, leading to potential interference with surrounding components and increased noise and dust accumulation, which affects heat dissipation performance.

Innovation Solution

A heat dissipating module with a pivot mechanism, comprising a first and second heat sink, a connector, and a heat pipe, allowing for adjustable rotation of the second heat sink relative to the first, thereby increasing the heat dissipating area and enabling flexible assembly without interference, using a pivot with a bolt, nut, and washers for precise positioning and lubrication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the heat pipe length and bending angle are fixed, then the manufacturing is simple, but the design flexibility is limited and may cause interference with surrounding components

Engineering Contradiction:
Improvedesign flexibilityVSAvoidheat pipe structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The heat pipe is designed with a pivot joint that allows it to rotate between a first position (extended state) and a second position (retracted state). This dynamic structure enables the heat pipe to adapt to different spatial requirements and avoid interference with surrounding components while maintaining manufacturing simplicity through standardized pivot mechanisms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The heat pipe is divided into multiple sections connected by pivot joints, allowing each section to rotate independently. This segmentation provides design flexibility in positioning the heat pipe relative to surrounding components while keeping each individual section manufacturable using standard processes.

Inventive Principle:
Principle #1Segmentation

2Productivity

If the heat dissipating fans operate at high speed, then the heat dissipating efficiency is improved, but noise and vibration increase and dust accumulates on the fans

Engineering Contradiction:
Improveheat dissipating efficiencyVSAvoidnoise and vibration
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the mechanical heat dissipating fan with a heat pipe-based passive heat dissipation system. The heat pipe conducts heat from the electronic component to heat dissipating fins, eliminating the need for high-speed rotating fans and their associated noise, vibration, and dust accumulation problems while maintaining effective heat dissipation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Area of stationary object

If the heat dissipating module uses fixed heat pipe, then the assembly is simple, but the heat dissipating area is limited and may interfere with surrounding structures

Engineering Contradiction:
Improveheat dissipating areaVSAvoidassembly complexity
Core Design Contradiction:
Area of stationary objectVSEase of operation

Solution Approach 1:

The pivot joint enables the heat pipe to rotate between extended and retracted positions, allowing the heat dissipating fins to be positioned at optimal locations for maximum heat dissipation area while avoiding interference with surrounding structures. The assembly remains relatively simple using standardized pivot components.

Inventive Principle:
Principle #15Dynamics

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 module achieves enhanced heat dissipation efficiency with a larger heat dissipating area, reduces noise, and allows for flexible assembly in various electronic devices, lowering manufacturing costs by eliminating the need for custom designs.

Implementation Method 1

The heat pipe has a first section and a second section connected to each other. The first section and the second section are inserted into the first heat sink and the second heat sink, respectively.

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

The pivot passes through the first pivotal hole and the second pivotal hole, and it may be pivotally connected to the connector and the second heat sink.

Methodology Applied
Scientific EffectMechanical rotation:

Implementation Method 3

The limiting protrusion protrudes into the limiting opening and limits the rotation angle of the second heat sink when the second heat sink is rotated relative to the connector.

Methodology Applied
Scientific EffectMechanical constraint:

Implementation Method 4

A heat dissipating module uses the combination of various kinds of heat sinks and heat dissipating fans

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 5

heat dissipating module achieves the heat dissipating effect using a heat pipe cooperating with heat dissipating fins

Methodology Applied
Scientific EffectThermal radiation: Thermal Radiation

Data Source

PatentUS7755900B2Heat dissipating module
Publication Date: 2010.07.13 PEGATRON
  • US7755900B2 patent drawing
  • US7755900B2 patent drawing
  • US7755900B2 patent drawing

AI summary

A heat dissipating module including a first heat sink, a second heat sink, a connector, a pivot and a heat pipe is provided. The first heat sink is disposed on a circuit board and contacts a heat source. The second heat sink has a first pivotal hole and a limiting opening. The connector has a first connecting portion and a second connecting portion. The first connecting portion is fixedly connected to the first heat sink. The second connecting portion has a limiting protrusion and a second pivotal hole corresponding to the first pivotal hole. The pivot passes through the first pivotal hole and the second pivotal hole and is pivotally connected to the connector and the second heat sink. The limiting protrusion protrudes into the limiting opening to limit the rotation angle of the second heat sink relative to the connector.