Electrical Connector Shielding Case Stopping Mechanism

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Solution Overview

Problem

The existing electrical connectors suffer from looseness between the shielding case and the insulating housing due to a large interval, leading to unstable electrical connections and weak plugging and pulling forces.

Innovation Solution

The electrical connector incorporates a stopping mechanism with a bent back case that applies a pressing force opposite to the plugging direction, using flexible arms or embosses to maintain the shielding case and insulating housing in a fixed position, enhancing structural strength and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the flat plate portion is bent at almost 90° to form the back case, then the shielding case can surround the insulating housing, but a large interval remains between the shielding case and the insulating housing causing loosening

Engineering Contradiction:

Improvebending angle of back caseVSAvoidloosening between shielding case and insulating housing

Core Design Contradiction:

ShapeVSStability of the object's composition

Solution Approach 1:

The stopping mechanism applies a pressing force in advance to counteract the loosening tendency caused by the 90° bending angle. The pressing force acts opposite to the plugging direction, preventing the shielding case from moving away from the insulating housing before any loosening occurs.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The bending angle of the back case is modified from the conventional 90° to a specific angle range (80°-90°). This parameter change, combined with the stopping mechanism, optimizes both the shielding coverage and the contact pressure to eliminate the large interval while maintaining structural integrity.

Inventive Principle:

Principle #35Parameter changes

2Stability of the object's composition

If the interval between the shielding case and insulating housing is reduced, then loosening is avoided, but the space for receiving the complementary device is limited

Engineering Contradiction:

Improvetightness between shielding case and insulating housingVSAvoidspace for complementary device

Core Design Contradiction:

Stability of the object's compositionVSVolume of moving object

Solution Approach 1:

The pressing force is applied locally at specific positions (front end, rear end, or both ends of the insulating housing) rather than uniformly across the entire housing. This localized application maintains tight contact where needed while preserving space in other areas for the complementary device.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The pressing force is applied partially at selected positions rather than across the entire insulating housing. This partial action is sufficient to prevent loosening at critical areas while leaving adequate space for the complementary device insertion and reception.

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If the stopping mechanism applies pressing force on the insulating housing, then loosening is avoided and electrical connection stability is improved, but the structure complexity increases

Engineering Contradiction:

Improveelectrical connection stabilityVSAvoidstructure of stopping mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The stopping mechanism is integrated with the back case as a unified structure. The pressing force application features (such as the bent flexible arm or emboss) are formed as part of the back case itself, eliminating the need for separate components and reducing overall structural complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The stopping mechanism utilizes a flexible arm made from a thin metal sheet that is cut and bent from the back case. This flexible component can elastically deform to apply pressing force while maintaining a simple, lightweight structure that does not add significant complexity to the overall design.

Inventive Principle:

Principle #30Flexible shells and thin films

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 ensures a tightly secured plug-in status, providing stable electrical connections and improved structural strength by maintaining the relative positions of the shielding case and insulating housing, thus enhancing the connector's reliability.

Implementation Method 1

The stopping mechanism applies a pressing force on the insulating housing, and the direction of the pressing force is opposite to the direction, which the complementary device plugging in

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS7527526B1Electrical connector

Publication Date: 2009.05.05 SPEED TECH

AI summary

An electrical connector being adapted to be matched with a complementary device, and comprising at least an insulating housing, a terminal set and a shielding case. The shielding case substantially surrounds the insulating housing and the terminal set, the shielding case comprising at least a body and a back case. The body of the shielding case surrounds the upper, lower, left and right sides of the insulating housing, and the back case of the shielding case surrounds the back of the insulating housing substantially. The invention providing at least a stopping mechanism to apply a pressing force on the insulating housing, and the direction of the pressing force is opposite to what the complementary device plugging in.