Frameless Fan Engaging Member for Tool-Free Heatsink Assembly

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Solution Overview

Problem

Conventional heat dissipation methods for electronic components require additional components and tools for assembly and disassembly, increasing manufacturing and labor costs, and can be inconvenient when replacing fans, with potential issues from stripped screws and increased assembly time.

Innovation Solution

A heat dissipation module with a frameless fan that uses radially extended engaging members with protrusions and notches on the heatsink fins for direct assembly without screws or tools, allowing for quick and secure attachment and detachment, and a speed switch device for adjustable fan speed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional fans are fixed on heatsink using screws and additional components, then the connection is secure, but the assembly process requires excess components and hand tools, increasing manufacturing costs, assembly time and labor costs

Engineering Contradiction:
Improveassembly process simplicityVSAvoidnumber of components
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The engaging member integrates multiple functions into a single component: it serves as both the mounting structure (replacing separate screws and mounting brackets) and the connection mechanism (replacing separate fasteners). The motor base and engaging member are integrally formed as a single piece, eliminating the need for separate mounting components and hand tools during assembly.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The engaging member performs multiple functions simultaneously: it provides structural support for the motor base, enables tool-free attachment to the heatsink through the bar-and-notch mechanism, and allows for easy disassembly by simply pulling the fan outward. This multi-functional design replaces what previously required screws, mounting brackets, and hand tools.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Productivity

If screws are used to fasten the fan directly on the heatsink, then the connection is strong, but hand tools are required for assembly and disassembly, increasing assembly time and labor costs

Engineering Contradiction:
Improveassembly speedVSAvoidtool requirement
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The engaging member's bar protrusion fits into the heatsink's notch structure, creating a self-locking mechanism that secures the fan without requiring external tools. The design allows the fan to be attached and detached through simple manual operations - pushing the fan inward to engage and pulling outward to disengage - making the system self-servicing without hand tools.

Inventive Principle:
Principle #25Self-service

3Reliability

If additional components like plastic covers or screws are used to fix the fan, then the fan is securely mounted, but manufacturing costs and assembly time increase

Engineering Contradiction:
Improvemounting securityVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The engaging member integrates multiple functions into a single component: it serves as both the mounting structure (replacing separate screws and mounting brackets) and the connection mechanism (replacing separate fasteners). The motor base and engaging member are integrally formed as a single piece, eliminating the need for separate mounting components and hand tools during assembly.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The engaging member performs multiple functions simultaneously: it provides structural support for the motor base, enables tool-free attachment to the heatsink through the bar-and-notch mechanism, and allows for easy disassembly by simply pulling the fan outward. This multi-functional design replaces what previously required screws, mounting brackets, and hand tools.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Reliability

If screws are used for fan attachment, then the connection is secure, but the heatsink may suffer from stripped screw holes during assembly or disassembly

Engineering Contradiction:
Improveconnection stabilityVSAvoiddamage to heatsink
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The engaging member's bar protrusion fits into the heatsink's notch structure, creating a self-locking mechanism that secures the fan without requiring external tools. The design allows the fan to be attached and detached through simple manual operations - pushing the fan inward to engage and pulling outward to disengage - making the system self-servicing without hand tools.

Inventive Principle:
Principle #25Self-service

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

This solution reduces manufacturing and labor costs, simplifies assembly and disassembly, enhances heat dissipation efficiency by allowing unobstructed airflow, and eliminates the need for hand tools, while providing a secure and efficient connection mechanism.

Implementation Method 1

The heat guiding block contacts a heat source for dissipating heat from the heat source

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

The motor drives the impeller to rotate... allowing the airflow produced by the impeller to pass therethrough

Methodology Applied
Scientific EffectForced convection: Forced Convection

Data Source

PatentUS8040674B2Heat dissipation module and fan thereof
Publication Date: 2011.10.18 DELTA ELECTRONICS INC(CN)
  • US8040674B2 patent drawing
  • US8040674B2 patent drawing
  • US8040674B2 patent drawing

AI summary

The present invention provides a heat dissipation module and a fan thereof. The heat dissipation module includes a heatsink and a frameless fan. The fan is disposed in the heatsink. The fan includes a motor base, an impeller, a motor and at least one engaging member. The impeller and the motor are disposed on the motor base. The motor drives the impeller to rotate, and the engaging member is extended radially from the motor base. The fan is directly assembled to the heatsink via the engaging member.