Fan Wire Lead-out Structure Preventing Impeller Contact

Solution Overview

Problem

Existing fans experience issues with loose wires that can rise from the enclosure, leading to a loose state and potential breakage, which affects the normal operation by contacting the impeller and disrupting airflow.

Innovation Solution

A wire lead-out portion with a base portion, wire holding portion, and wire locking portion is designed to limit wire movement in specific directions, preventing loosening or escape, ensuring the wire is firmly fixed and preventing contact with the impeller.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a simple wire leading structure is used, then the device complexity is reduced, but the wire becomes loose and may contact the impeller, affecting reliability

Engineering Contradiction:

Improvewire stabilityVSAvoidwire lead-out structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The wire lead-out portion is segmented into three functional components: a base portion for structural support, a wire holding portion for securing the wire, and a wire locking portion for preventing wire escape. This segmentation allows each part to perform its specific function effectively, ensuring wire stability without requiring an overly complex integrated structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The wire lead-out portion acts as an intermediary structure between the motor support portion and the external power source connection. It provides a dedicated pathway and securing mechanism for the wire, preventing direct contact with the impeller while maintaining electrical connectivity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the wire is allowed to move freely, then the ease of operation is improved, but the wire may become loose and contact the impeller, reducing reliability

Engineering Contradiction:

Improvewire position stabilityVSAvoidwire installation flexibility

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The wire lead-out portion is segmented into three functional components: a base portion for structural support, a wire holding portion for securing the wire, and a wire locking portion for preventing wire escape. This segmentation allows each part to perform its specific function effectively, ensuring wire stability without requiring an overly complex integrated structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the wire lead-out structure have different local qualities: the base portion provides rigid support, the wire holding portion provides securing function with appropriate friction, and the wire locking portion provides constraint in specific directions. This local differentiation optimizes both wire stability and installation ease.

Inventive Principle:

Principle #3Local quality

3Reliability

If a compact wire lead-out structure is used, then the volume is reduced, but the wire may not be firmly fixed, affecting reliability

Engineering Contradiction:

Improvewire fixation strengthVSAvoidwire lead-out portion volume

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The wire lead-out portion is segmented into three functional components: a base portion for structural support, a wire holding portion for securing the wire, and a wire locking portion for preventing wire escape. This segmentation allows each part to perform its specific function effectively, ensuring wire stability without requiring an overly complex integrated structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The wire locking portion extends in a direction perpendicular to the wire holding portion, creating a three-dimensional constraint system. This dimensional approach allows effective wire fixation with minimal volume by utilizing spatial constraints rather than increasing the size of a single component.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11303184B2Fan and electromechanical device

Publication Date: 2022.04.12 NIDEC CORP(JP)

AI summary

A fan and an electromechanical device are provided. The fan includes: an impeller, a motor, a motor support portion, a wire, and a wire lead-out portion. The wire lead-out portion includes: a base portion; a wire holding portion limiting movement of the wire in a first direction; and a wire locking portion, formed at an end of the wire holding portion and extending along the extension direction of the base portion, wherein the wire locking portion limits a movement of the wire in a second direction perpendicular to both the first direction and the extension direction of the base portion. The wire locking portion includes a blocking portion that does not extend beyond the wire holding portion in the extension direction of the base portion, and an extension portion extending from the blocking portion to an outer side of the wire holding portion along the extension direction of the base portion.