Shield Ring Insert Holes for Braided Part Binding Strength

Solution Overview

Problem

The existing connecting structure of shield braided parts in shielded connectors experiences low binding strength due to surface contact between the shield braided part and the pressed protruding part, and increasing the dimension of the pressed protruding part to enhance binding strength results in a larger and heavier shield ring.

Innovation Solution

A connecting structure featuring a shield ring with protruding parts that include braided part insert holes, allowing the shield braided part to be sandwiched between the shield ring and the tubular part, with the insert holes improving binding strength and reducing the area of the protruding part, thus enhancing pressure contact force without increasing the ring's width.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the dimension of the pressed protruding part is increased to increase the pressed area, then the binding strength between the pressed protruding part and the shield braided part is enhanced, but the width of the shield ring is increased making it large and heavy

Engineering Contradiction:

Improvebinding strengthVSAvoidshield ring weight

Core Design Contradiction:

StrengthVSWeight of stationary object

Solution Approach 1:

The shield ring is divided into multiple functional zones: a pressed protruding part for mechanical connection, a binding part with engagement protrusions for interlocking with the shield braided part, and a clamping part for securing the assembly. This segmentation allows each part to perform its specific function efficiently without requiring the entire shield ring to be oversized, thus maintaining strength while reducing overall weight.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The shield ring is formed by combining metal materials with different properties through composite manufacturing. The binding part incorporates engagement protrusions that interlock with the shield braided part, creating a composite structure that enhances binding strength without increasing the overall dimensions or weight of the shield ring.

Inventive Principle:

Principle #40Composite materials

2Strength

If the dimension of the pressed protruding part is increased to increase the pressed area, then the binding strength between the pressed protruding part and the shield braided part is enhanced, but the width of the shield ring is increased making it large

Engineering Contradiction:

Improvebinding strengthVSAvoidshield ring width

Core Design Contradiction:

StrengthVSLength of stationary object

Solution Approach 1:

The shield ring is divided into multiple functional zones: a pressed protruding part for mechanical connection, a binding part with engagement protrusions for interlocking with the shield braided part, and a clamping part for securing the assembly. This segmentation allows each part to perform its specific function efficiently without requiring the entire shield ring to be oversized, thus maintaining strength while reducing overall width.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of increasing the width (one dimension) of the shield ring to enhance binding strength, the invention utilizes the depth dimension by forming engagement protrusions that extend into the shield braided part. This dimensional transition allows for enhanced binding strength through interlocking in the radial direction rather than expanding the circumferential width.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Device complexity

If surface contact between the shield braided part and the pressed protruding part is used, then the structure is simple, but the binding strength is difficult to increase

Engineering Contradiction:

Improveconnecting structure complexityVSAvoidbinding strength

Core Design Contradiction:

Device complexityVSStrength

Solution Approach 1:

The connecting structure is segmented into three distinct functional parts: the pressed protruding part for initial contact and compression, the binding part with engagement protrusions for interlocking, and the clamping part for final securing. This segmentation transforms the simple surface contact into a multi-stage connection process that achieves high binding strength while maintaining reasonable structural simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pressed protruding part performs a preliminary compression action on the shield braided part before the engagement protrusions of the binding part establish the final interlocking connection. This preliminary action prepares the shield braided part for optimal engagement, ensuring high binding strength while keeping the overall structure relatively simple.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8986045B2Connecting structure of shield braided part

Publication Date: 2015.03.24 YAZAKI CORP

AI summary

A connecting structure of a shield braided part includes a shield shell that accommodates a connector housing which accommodates a terminal fitting connected to an end portion of an electric wire, and the shield shell including a tubular part which covers an outer periphery of the end portion of the electric wire, and a shield ring that is attached to an outer periphery of the tubular part of the shield shell and sandwiches an end portion of a tubular shield braided part covering the outer periphery of the electric wire between an outer peripheral face of the tubular part and the shield ring. A protruding part which protrudes toward the shield braided part is formed in the shield ring. A braided part insert hole is formed in the protruding part.