Bent Guide Member for Electric Conductor Insertion

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Solution Overview

Problem

Existing electric conductor insertion devices face difficulties in attaching and detaching guide members for guiding electric conductors into stator core slots due to the need for small bolts in tight spaces, which complicates the process and may result in insufficient bonding strength and accuracy issues.

Innovation Solution

An electric conductor insertion device featuring a guide member with a bent portion forming an inverted V-shape, allowing it to be supported without bolts or adhesives, facilitating easy attachment and detachment, and incorporating a supporting body with engagement parts for simultaneous displacement, ensuring accurate positioning and secure support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If small bolts are used to attach guide members in tight spaces, then the attachment can be achieved in limited space, but the operation becomes difficult and time-consuming

Engineering Contradiction:

Improveattachment spaceVSAvoidbolt screwing operation

Core Design Contradiction:

Area of stationary objectVSEase of operation

Solution Approach 1:

The patent replaces the traditional mechanical bolt-screwing system with a snap-fit engagement system. The guide member includes engagement protrusions that fit into corresponding engagement recesses on the support block, eliminating the need for bolts and simplifying the attachment operation to a simple insertion and snapping motion that can be easily performed in tight spaces.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent applies local quality by designing specific engagement features (protrusions and recesses) at critical locations on the guide member and support block. These localized engagement structures provide secure attachment without requiring fasteners throughout the entire assembly, enabling easy installation in constrained spaces while maintaining structural integrity.

Inventive Principle:

Principle #3Local quality

2Ease of operation

If adhesive bonding is used to attach guide members, then bolt screwing is avoided, but bonding strength becomes insufficient and positioning accuracy deteriorates

Engineering Contradiction:

Improveattachment operationVSAvoidbonding strength and positioning accuracy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces chemical adhesive bonding with a mechanical snap-fit engagement system. The engagement protrusions on the guide member fit into recesses on the support block, providing both strong mechanical bonding and precise positioning through the geometric constraints of the engagement features, eliminating the weaknesses of adhesive bonding.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The guide member's engagement protrusions are designed to automatically align with and engage the recesses on the support block during installation. This self-aligning mechanism ensures accurate positioning without requiring additional positioning fixtures or complex alignment procedures, while the snap-fit provides sufficient bonding strength.

Inventive Principle:

Principle #25Self-service

3Ease of repair

If guide members are frequently attached and detached, then maintenance and replacement become possible, but the attachment process becomes complex and time-consuming

Engineering Contradiction:

Improveguide member replacementVSAvoidattachment and detachment time

Core Design Contradiction:

Ease of repairVSLoss of time

Solution Approach 1:

The patent replaces complex fastening systems with a simple snap-fit engagement mechanism. The guide member can be quickly attached by inserting it into the support block until the engagement protrusions snap into the recesses, and detached by applying a simple releasing force. This reduces both attachment complexity and time required for maintenance operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent segments the insertion device into modular components - the guide member and the support block - connected through standardized engagement features. This modular design with clear separation interfaces enables rapid assembly and disassembly, facilitating frequent maintenance and replacement operations without complex procedures.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11258337B2Electric conductor insertion device

Publication Date: 2022.02.22 HONDA MOTOR CO LTD

AI summary

A guide member includes a first diametrically directed side guide section and a second diametrically directed side guide section formed by bending a single member at a bent portion. The first diametrically directed side guide section guides predetermined portions of electric conductors on a diametrically directed side of a slot. Further, the second diametrically directed side guide section guides predetermined portions of the electric conductors on a diametrically directed side of another slot adjacent to the slot. The bent portion is supported by a supporting body.