Robot Cleaner Charging Dock with Guided Induction Docking

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Solution Overview

Problem

Existing robot cleaner charging devices face challenges in accurately guiding the return induction signal and ensuring tight contact between the power supply and charging terminals for efficient charging, leading to potential inaccuracies in docking and reduced charging efficiency.

Innovation Solution

A charging device for robot cleaners that includes an induction signal generating unit and an induction signal guide member to enhance the linearity of the return induction signal, combined with a terminal supporting member for elastic support of the charging terminal, ensuring accurate docking and stable contact for efficient charging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the robot cleaner is equipped with basic charging functionality, then the robot cleaner can be recharged, but the docking accuracy between power terminal and charging terminal is insufficient

Engineering Contradiction:
Improvedocking accuracyVSAvoidcharging device structure
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

An induction signal guide member is introduced as an intermediary component between the induction signal generating unit and the charging terminal. This guide member shapes and directs the induction signal to accurately guide the robot cleaner's power terminal to the correct docking position, thereby improving docking accuracy without requiring complex mechanical positioning mechanisms.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces complex mechanical docking guidance mechanisms with an electromagnetic induction signal system. The induction signal guide member uses electromagnetic fields to guide the robot cleaner's docking, eliminating the need for complex mechanical guides or sensors while achieving high docking precision.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Force

If the charging terminals are designed for simple connection, then the device structure is simple, but the contact force between power terminal and charging terminal is insufficient

Engineering Contradiction:
Improvecontact forceVSAvoidterminal support structure
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

A terminal supporting member with elastic properties is designed to provide counteracting force against the gravitational and operational forces that would separate the terminals. The elastic structure continuously exerts a restoring force to maintain tight contact between the power terminal and charging terminal, ensuring reliable electrical connection without requiring complex external fastening mechanisms.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The terminal supporting member is designed with specific elastic parameters (material properties, thickness, geometry) that allow it to deform under load and automatically adjust to maintain optimal contact force. This elastic parameter design enables the terminal to adapt to slight position variations while maintaining sufficient contact pressure for effective charging.

Inventive Principle:
Principle #35Parameter changes

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

The solution improves the accuracy of the robot cleaner's docking with the charging device, reducing lateral movement and ensuring the power terminal and charging terminal remain in tight contact, thereby enhancing the efficiency and stability of the charging process.

Implementation Method 1

an induction signal generating unit disposed at a side of the cover or the base to transmit a return induction signal to the robot cleaner

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

an induction signal guide member disposed at a side of the induction signal generating unit to enhance a docking performance of the robot cleaner by improving linearity of the induction signal

Methodology Applied
Scientific EffectElectromagnetic field guidance: Electromagnetic Induction

Data Source

PatentUSRE47265E1Charging device of robot cleaner
Publication Date: 2019.03.05 LG ELECTRONICS INC
  • USRE47265E1 patent drawing
  • USRE47265E1 patent drawing
  • USRE47265E1 patent drawing

AI summary

A charging device of a robot cleaner is provided. The charging device of a robot cleaner according to the embodiment includes at least one cover forming an appearance of the charging device, a base which is coupled with the cover and includes a terminal unit for charging the robot cleaner, an induction signal generating unit disposed at a side of the cover or the base to transmit a return induction signal to the robot cleaner, and an induction signal guide member disposed at a side of the induction signal generating unit to enhance a docking performance of the robot cleaner by improving linearity of the induction signal. The charging device according to the embodiment can guide the path for the return of the robot cleaner and recharge the robot cleaner stably.