Integrated Power Plug with Built-in USB Port

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Solution Overview

Problem

Existing power plugs and USB ports are typically designed for separate use, requiring an adapter to recharge electronic devices from alternating current sources, which is inconvenient for users.

Innovation Solution

A power plug with a built-in USB port and power conversion circuit that allows direct connection to both alternating current sources and electronic devices, eliminating the need for an adapter by converting AC to DC and providing multiple voltage levels through a compact design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If power plug and USB port are designed for separate use, then each component can be optimized independently, but users need an adapter to recharge electronic devices from alternating current sources

Engineering Contradiction:

Improveconvenience of recharging electronic devicesVSAvoidneed for additional adapter

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the power plug and USB port into a single integrated unit. The power conversion circuit is built into the power plug housing, allowing direct connection to both AC power sources and USB-powered electronic devices without requiring a separate adapter.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The power plug is designed to perform multiple functions: it can receive AC power through prongs, convert the power through an integrated power conversion circuit, and provide both traditional power outlet functionality and USB charging capability through a single device.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If an adapter is used to connect power plug to electronic devices, then power conversion from AC to DC is achieved, but the charging process becomes more complex and less convenient

Engineering Contradiction:

Improveability to power different electronic devicesVSAvoidnumber of components required

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The adapter functionality is merged into the power plug itself. The power conversion circuit, previously a separate component, is now integrated within the power plug housing, reducing the total number of components from two (power plug + adapter) to one (integrated power plug).

Inventive Principle:

Principle #5Merging (Combining)

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

Enables direct recharging or powering of portable electronic devices without an adapter, enhancing user convenience and simplifying the charging process by integrating a USB port and power conversion functionality into a single, compact unit.

Implementation Method 1

Methodology Applied

Scientific EffectPower conversion:

Data Source

PatentUS9071022B2Power plug having a universal serial bus port for an electrical appliance

Publication Date: 2015.06.30 POWERTECH INDAL

AI summary

A power plug includes a main body, at least two prongs, and a cable. The main body has a universal serial bus port for receiving a universal serial bus plug. The prongs are disposed on the main body for receiving a power, and the prongs are configured to be insertable into an alternating current source. The cable is disposed on the main body and electrically connected to the prongs, and the cable is electrically connected to the power input end of the electrical appliance.