Charger Extension Device With Cable Retention Assembly

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Solution Overview

Problem

There is a need for a charger extension device that allows battery-operated devices to be charged at a distance from a wall outlet without the risk of the charging cable being accidentally removed, as existing solutions like longer cables or extension cords are either non-existent or unsafe.

Innovation Solution

A charger extension device with a housing featuring a USB port, a cable retention assembly to secure the cable in place, and an optional L-shaped stand for positioning, which can be connected to other devices to extend the charging distance, incorporating a quick charging circuit for reliable and safe charging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If a longer cable is used to charge a device farther from the outlet, then the charging distance is extended, but such longer cables do not exist in the market

Engineering Contradiction:

Improvecable lengthVSAvoidavailability of cable

Core Design Contradiction:

Length of stationary objectVSAdaptability or versatility

Solution Approach 1:

The charging system is divided into multiple segments: a wall outlet charger unit, an extension device with USB port, and a cable. The extension device acts as an intermediate segment that receives power from the charger and provides it through its own USB port, enabling flexible positioning without requiring a single extremely long cable.

Inventive Principle:

Principle #1Segmentation

2Length of stationary object

If an extension cord is used to extend charging distance, then the cable can reach farther, but the cord is prone to being tripped over and removed causing damage

Engineering Contradiction:

Improvecharging distanceVSAvoidsafety of connection

Core Design Contradiction:

Length of stationary objectVSReliability

Solution Approach 1:

The extension device serves as a safe intermediary between the charger and the battery-operated device. It provides a protected connection point with cable retention assembly that prevents accidental disconnection, eliminating the safety hazards associated with using extension cords near walkways.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the unsafe mechanical extension cord system with an electronic extension device that uses USB connectivity and integrated cable retention mechanisms, substituting a hazardous mechanical setup with a safer electronic solution.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If the cable is made secure to prevent removal, then charging safety is improved, but the device becomes more complex

Engineering Contradiction:

Improvecable retentionVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The cable retention assembly incorporates a dynamic spring-loaded clamp mechanism that automatically adjusts to secure the cable. The spring provides continuous retention force while allowing easy insertion and removal when needed, balancing security with ease of use without excessive complexity.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11594896B2Charger extension device

Publication Date: 2023.02.28 HOLTZMAN JOHN

AI summary

A charger extension device has a housing having a top side, a left side, a bottom side, a right side, a rear side, a front side, and an interior, an USB port on the front side of the housing, a port on the rear side of the housing, and a quick charging circuit in the interior between the USB port on the front side of the housing and the port on the rear side of the housing.