Stator Fixing Structure Using Elastic Clamping to Prevent Thermal Sliding

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Solution Overview

Problem

The existing stator fixing methods using glue are labor-intensive, prone to resource wastage, and cause the stator to slide during operation due to heat, leading to increased manufacturing costs and inefficiencies.

Innovation Solution

A stator fixing structure featuring a fixing member with a contact surface and engaging unit that fits around a tube, providing axial confinement and friction to prevent sliding, eliminating the need for glue by using a sequence of fitting the stator and fixing member around the tube.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If glue is used to connect the stator to the tube or base, then the stator can be fixed in position, but additional labor time is required and manufacturing costs increase

Engineering Contradiction:
Improvestator fixation stabilityVSAvoidmanufacturing efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The invention extracts and eliminates the glue connection step from the manufacturing process by replacing it with a mechanical fixing member that provides equivalent or superior fixation functionality, thereby removing the source of productivity loss and cost increase

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention replaces the chemical bonding mechanism (glue) with a mechanical fixing system consisting of a fixing member with clamping structure, achieving the same fixation purpose through mechanical means that are faster and more controllable

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

2Reliability

If glue is used to connect the stator to the tube or base, then the stator can be fixed, but the structure cannot be easily replaced when components are broken

Engineering Contradiction:
Improveconnection stabilityVSAvoidcomponent replaceability
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The invention segments the connection system into separable components (fixing member, stator, tube) that can be independently replaced, eliminating the need to replace the entire assembly when one component fails, as enabled by the modular mechanical connection

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The fixing member incorporates dynamic adjustment capabilities allowing the connection to be easily assembled and disassembled, providing both stable fixation during operation and easy replaceability during maintenance through adjustable clamping force

Inventive Principle:
Principle #15Dynamics

3Reliability

If the stator is connected by gluing, then it can be fixed to the tube, but the stator is apt to slide when heated during operation

Engineering Contradiction:
Improvestator position stabilityVSAvoidthermal resistance
Core Design Contradiction:
ReliabilityVSTemperature

Solution Approach 1:

The invention replaces the temperature-sensitive chemical bond (glue) with a temperature-resistant mechanical clamping system that maintains its fixation capability under thermal conditions, using physical contact and friction rather than chemical adhesion

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

Solution Approach 2:

The fixing member is designed with pre-applied clamping force that compensates for thermal expansion and contraction of the stator during operation, preventing sliding before it can occur by maintaining constant mechanical pressure

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

4Reliability

If glue is used for connection, then the stator can be fixed, but glue-overflowing is apt to occur during assembly

Engineering Contradiction:
Improveconnection strengthVSAvoidassembly precision
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The invention removes the glue application step entirely from the assembly process, eliminating the possibility of glue-overflowing by replacing chemical bonding with a dry mechanical fixation method that requires no adhesives

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The fixing member is designed to self-adjust and self-lock onto the stator and tube without requiring external adhesive materials, achieving secure connection through its own structural features such as clamping arms and friction surfaces

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 enables a secure, glue-free connection that saves time and reduces resource wastage, preventing stator sliding and enhancing manufacturing efficiency.

Implementation Method 1

The engaging unit is circumferentially extended from the main body towards a center of the main body to form a plurality of free ends to press against the outer surface of the tube

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The free ends of the engaging unit internally define a through hole for the tube to extend through... to press against the outer surface of the tube

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS9997966B2Stator fixing structure
Publication Date: 2018.06.12 ASIA VITAL COMPONENTS CO LTD
  • US9997966B2 patent drawing
  • US9997966B2 patent drawing
  • US9997966B2 patent drawing

AI summary

A stator fixing structure includes a tube and a fixing member. The tube has an outer surface, and both a stator set and the fixing member are fitted around the tube in a bottom-up sequence. The fixing member has a main body, which has a contact surface and an engaging unit. The engaging unit is circumferentially extended from the main body towards a center of the main body to form a plurality of free ends to tightly press against the outer surface of the tube. The contact surface is axially tightly in contact with the stator set to prevent the stator set from sliding.