Ceiling Fan Intermediate Transition Member Assembly

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Solution Overview

Problem

Conventional ceiling fans are time-consuming to assemble, have unstable assembly quality, and a higher axial height, which increases user oppression and costs.

Innovation Solution

Incorporating an intermediate transition member with heat dissipating holes and radially extending coupling portions that securely connect blades, reducing the fan's thickness and axial height while improving assembly efficiency and heat dissipation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple separate components (hub, positioning member, blade) are used to assemble the ceiling fan, then the assembly process becomes more complex and time-consuming, but the structural stability is improved

Engineering Contradiction:
Improveassembly quality stabilityVSAvoidassembly time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent integrates the hub, positioning member, and blade into a single integrated component structure. The blade is directly formed as an extension of the hub body, eliminating the need for separate positioning members and multiple assembly steps. This merging of components reduces assembly time while maintaining structural integrity through the unified design.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If multiple separate components with certain thickness are used, then the assembly flexibility is improved, but the axial height of the ceiling fan increases

Engineering Contradiction:
Improveassembly flexibilityVSAvoidaxial height
Core Design Contradiction:
Adaptability or versatilityVSLength of moving object

Solution Approach 1:

The patent employs a nested structure where the blade is integrated within the hub's radial extension, and the motor is positioned within the blade assembly. This nesting arrangement allows multiple functional components to occupy overlapping spatial volumes, significantly reducing the overall axial height while preserving assembly flexibility through modular integration.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Strength

If the ceiling fan components are designed with sufficient thickness for structural integrity, then the strength is improved, but the user experience deteriorates due to increased height and oppression

Engineering Contradiction:
Improvestructural integrityVSAvoiduser comfort
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The patent transitions from a conventional axial stacking arrangement to a radial expansion design. The blade extends radially from the hub rather than stacking axially, and the motor is positioned centrally within this radial structure. This dimensional change allows the fan to achieve sufficient structural strength through radial distribution while minimizing axial height, thereby improving user comfort.

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

4Productivity

If conventional assembly methods with multiple separate parts are used, then the manufacturing precision requirements are reduced, but the productivity decreases

Engineering Contradiction:
Improveassembly efficiencyVSAvoidcomponent integration precision
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent incorporates preliminary integration actions during the manufacturing process, where the blade is pre-formed as an integral part of the hub structure. This preliminary integration eliminates the need for separate positioning members and reduces the number of assembly operations required, thereby improving productivity while maintaining manufacturing precision through streamlined production processes.

Inventive Principle:
Principle #10Preliminary action

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 enhances cooling efficiency, reduces user oppression, simplifies assembly, lowers costs, and achieves uniform heat dissipation by securely fixing blades to the transition member and dissipating heat through strategically placed holes.

Implementation Method 1

An outer face of the motor includes a plurality of heat dissipating holes

Methodology Applied
Scientific EffectHeat dissipation: Convection

Data Source

PatentEP3453886B1Ceiling fan
Publication Date: 2021.06.16 SUNONWEALTH ELECTRIC MACHINE IND CO LTD
  • EP3453886B1 patent drawingFigure 1
  • EP3453886B1 patent drawingFigure 2
  • EP3453886B1 patent drawingFigure 3

AI summary

A ceiling fan including a motor (1), an intermediate transition member (2) and a plurality of blades (3) is disclosed. The motor (1) includes a stator (11), a rotor (12), and a shaft (13) coupled with the stator (11). An outer face of the motor (1) includes a plurality of heat dissipating holes (14). The intermediate transition member (2) is coupled with the motor (1) and includes a body (22) and a plurality of first coupling portions (23) integrally formed with the body (22). The body (22) includes a central hole (21) at a center thereof. The shaft (13) extends through the central hole (21). The plurality of first coupling portions (23) extends radially away from the shaft (13). The plurality of blades (3) is coupled with the plurality of first coupling portions (23) of the intermediate transition member (2).