Sliding Wire Terminal Structure for Reliable Crimpless Contact

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Solution Overview

Problem

The existing methods for connecting a terminal to a wire require large facilities and molds, leading to increased manufacturing costs and potential reliability issues due to the need for crimping techniques that can compromise electrical connection reliability.

Innovation Solution

A terminal design featuring a metal plate body with a sandwiching portion and a slide portion that includes a pressurizing mechanism, where a holding protrusion is formed by folding a tip portion onto an overlapping portion, and concavo-convex fitting portions are used to enhance connection reliability by preventing displacement and improving electrical contact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a holding protrusion is formed by folding a tip portion of the sandwiching portion, then the terminal can hold the wire without requiring large crimping facilities, but the holding protrusion may slide and turn up when the wire is pulled, reducing electrical connection reliability

Engineering Contradiction:
Improvemanufacturing costVSAvoidelectrical connection reliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-forming fitting portions (concave and convex structures) on the holding protrusion before the crimping operation. These fitting portions are created during the terminal formation process, so when the holding protrusion is folded onto the wire, the fitting portions automatically engage to prevent sliding and turning up, ensuring reliability without requiring additional facilities during crimping.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent applies local quality by creating specific fitting portions (concave and convex structures) at localized areas on the holding protrusion and wire contact surface. These localized structural features provide enhanced friction and mechanical interlocking precisely where needed, preventing the holding protrusion from sliding or turning up while maintaining the overall simplicity of the terminal structure.

Inventive Principle:
Principle #3Local quality

2Reliability

If conventional crimping methods are used with molds and jigs, then the terminal can be connected to the wire, but large-scale facilities are required which increases manufacturing cost

Engineering Contradiction:
Improveconnection reliabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent extracts the essential connection function from the complex mold and jig system. By incorporating fitting portions directly into the terminal body and wire contact surfaces, the invention removes the need for specialized crimping facilities, allowing simple pressing operations to achieve reliable connections without expensive equipment.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies self-service by designing the terminal and wire with complementary fitting portions that automatically engage during the crimping process. The concave and convex structures self-align and interlock when the terminal is pressed onto the wire, eliminating the need for external fixtures or complex positioning mechanisms that would be required in conventional crimping systems.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11799216B2Terminal and wire with terminal
Publication Date: 2023.10.24 AUTONETWORKS TECH LTD
  • US11799216B2 patent drawing
  • US11799216B2 patent drawing
  • US11799216B2 patent drawing

AI summary

A terminal to be connected to a front end part in an extending direction of a wire is provided with a terminal body including a sandwiching portion for sandwiching the wire, and a slide portion slidable along the extending direction of the wire with respect to the terminal body. The slide portion includes a pressurizing portion for pressurizing the sandwiching portion toward the wire. The terminal body is formed by a metal plate material in a bent state. The sandwiching portion includes a holding protrusion projecting toward the wire to contact the wire. The holding protrusion is formed by folding a tip portion of the sandwiching portion and overlapping the tip portion on an overlapping portion of the sandwiching portion. A first facing surface of the overlapping portion and a second facing surface of the tip portion are facing each other and overlapped.