Drift Car Motor Control via Opposite Rotation

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Solution Overview

Problem

Existing children's electric cars face limitations in achieving drift functionality due to high costs associated with high-power motors or the need for large spaces to achieve faster speeds for sharp turns, which restricts the drift capability and requires skilled operation.

Innovation Solution

A drift car design featuring a driving system with a front wheel set, rear wheel set, and motor set connected to an on-board controller, where the controller responds to a drift trigger signal by controlling the motors to rotate in opposite directions, allowing for efficient drift without the need for high-power motors or large spaces, and includes a remote control option for easy operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If high-power motor is used in rear wheels to achieve drift, then drift function is realized, but cost increases

Engineering Contradiction:

Improvemotor powerVSAvoidcost

Core Design Contradiction:

PowerVSEase of manufacture

Solution Approach 1:

The patent divides the drift function into two independent parts: (1) a small-power motor providing drive force, and (2) a drift mechanism (including drift block, drift wheel, or differential mechanism) that generates lateral force. This segmentation allows using a low-power motor while still achieving drift through the specialized mechanism, resolving the contradiction between motor power and cost.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a drift mechanism as an intermediary component between the motor and the ground. This intermediary (drift block, drift wheel, or differential) converts the motor's forward drive force into lateral drift motion, allowing a small-power motor to achieve drift effects that would otherwise require high-power motors, thus reducing cost.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Speed

If front wheels turn sharply at high speed to achieve drift, then drift action is generated, but larger space is required

Engineering Contradiction:

Improvedrift speedVSAvoidspace requirement

Core Design Contradiction:

SpeedVSArea of stationary object

Solution Approach 1:

The patent equips the vehicle with a drift mechanism (drift block, drift wheel, or differential) that is pre-configured to generate lateral force. When activated, this pre-prepared mechanism immediately produces drift motion without requiring the vehicle to first accelerate to high speed and then turn sharply, thereby achieving drift in smaller spaces.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the traditional drift method (relying on high-speed sharp turns and center of gravity shift) with a mechanical drift mechanism. This substitution eliminates the need for large space and high speed, as the mechanism directly generates lateral force through its structure (drift block sliding, drift wheel rotating laterally, or differential mechanism), resolving the contradiction between drift speed and space requirement.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If traditional drift methods are used, then drift function is achieved, but operation difficulty increases for children

Engineering Contradiction:

Improvedrift functionVSAvoidoperation difficulty

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The drift mechanism is designed to automatically generate lateral force when activated, without requiring the child operator to skillfully manipulate the vehicle at high speed. The mechanism itself performs the complex function of generating drift motion, making the operation simple and accessible to children, thus resolving the contradiction between drift function and ease of operation.

Inventive Principle:

Principle #25Self-service

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 enables cost-effective drift functionality in a smaller space without requiring skilled operation, allowing for a more interactive and entertaining experience by simulating real drift states with reduced friction and increased service life of components.

Implementation Method 1

the motor set includes a left motor and a right motor, in which the left motor is connected to the left front wheel or the left rear wheel, the right motor is connected to the right front wheel or the right rear wheel

Methodology Applied

Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Implementation Method 2

controls the left and right motors to rotate in opposite directions to generate a torque so as to realize the drift

Methodology Applied

Scientific EffectTorque generation: Torque

Data Source

PatentUS11708107B2Drift car for children

Publication Date: 2023.07.25 JIAXING JINTONG ELECTRONICS CO LTD

AI summary

Provided is a drift car for children, including a car body, a driving system and a control system, the driving system includes a front wheel set, a rear wheel set and a motor set on the car body, the front wheel set includes a left front wheel and a right front wheel, and the rear wheel set includes a left rear wheel and a right rear wheel, the control system includes an on-board controller arranged in the car body, and the motor set includes a left motor and a right motor, in which the left motor is connected to the left front wheel or the left rear wheel, the right motor is connected to the right front wheel or the right rear wheel, and the left and right motors are both connected to the on-board controller; the controller system also includes a drift trigger switch connecting to the on-board controller.