Magnetic Clutch Mechanism for Collision Deceleration and Reverse Backup
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Solution Overview
Problem
Hybrid and electric-motor driven automobiles face challenges in fuel efficiency, environmental impact, and collision damage mitigation, particularly due to complex structures and battery charging limitations, as well as accidents from pedal confusion.
Innovation Solution
A clutch device with an idle running mechanism and collision mitigation mechanism that includes a clutch means, deceleration and stop means, and backing up means, utilizing magnetic forces and sensors to control power transmission and vehicle deceleration, and a regenerative/backing up motor to stop and reverse the vehicle after collision detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a clutch device with idle running mechanism is used, then fuel efficiency is improved and environmental load is reduced, but device complexity increases
Solution Approach 1:
The patent combines the idle running mechanism, collision detection system, clutch control mechanism, and magnetic coupling system into an integrated clutch device. This merging of multiple functions into a single device achieves fuel efficiency through idle running while managing complexity through functional integration rather than separate systems.
Solution Approach 2:
The clutch device is designed to perform multiple functions: normal power transmission, idle running for fuel efficiency, and collision mitigation. The magnetic coupling mechanism serves both as a clutch and as part of the collision detection and response system, allowing one device to fulfill multiple roles and reduce overall system complexity.
2Object-affected harmful factors
If collision mitigation mechanism with rapid deceleration is implemented, then collision damage is reduced, but device complexity and control complexity increase
Solution Approach 1:
The collision mitigation mechanism prepares in advance by detecting collision conditions through sensors and pre-positioning the clutch and braking systems. When a collision is detected, the system rapidly engages the clutch and applies brakes without delay, achieving effective collision damage reduction through pre-prepared response mechanisms.
Solution Approach 2:
The system uses collision detection sensors to provide real-time feedback about collision conditions. This feedback triggers automatic control responses that engage the clutch and activate braking systems. The control system continuously monitors and adjusts the mitigation actions based on sensor feedback, achieving effective collision response through closed-loop control.
3Volume of moving object
If magnetic fluid is used to reduce magnetic resistance, then clutch size is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent changes the physical state and properties of the magnetic path by introducing magnetic fluid. This parameter change allows the magnetic field to penetrate more effectively through the clutch components, reducing magnetic resistance and enabling a more compact clutch design. The magnetic fluid's ability to fill gaps and conform to surfaces compensates for manufacturing tolerances.
Solution Approach 2:
The clutch incorporates magnetic fluid as a composite material within the magnetic path. This magnetic fluid acts as a intermediary substance that enhances magnetic coupling between components. The use of this specialized material allows for reduced clearances and more compact design while maintaining effective magnetic force transmission.
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 system effectively reduces collision damage by rapid deceleration and backup, enhances fuel efficiency through idle running, and minimizes environmental impact by optimizing energy use.
Implementation Method 1
a sliding means that transmits rotation of the input-side rotor to the output-side rotor by a magnetic force generated between the magnets of the input-side rotor and the magnets of the output-side rotor when the idle running mechanism is ON
Implementation Method 2
slides at least one of the rotors so that no magnetic force is generated between the magnets of the input-side rotor and the magnets of the output-side rotor when the idle running mechanism is OFF
Data Source
AI summary
When a collision occurs, a driving force of a drive shaft is transmitted to a reversing high-load multiple disk clutch via an inertia absorbing gear mechanism. Then, the driving force is transmitted to a gear via a gear, and inertia is absorbed and the driving force acts to rotate an output shaft at a low speed. On the other hand, when the gear rotates, a regenerative/backing up motor also rotates, and so-called regenerative driving is also performed. Due to these operations, the output shaft rapidly decreases in rotation speed, and goes into a rotation stopping state from a forward rotating state. Then, when a vehicle speed sensor detects that the vehicle speed has reached “0,” the regenerative/backing up motor is driven, the output shaft is driven to rotate reversely for several seconds, and thereafter, driving of the regenerative/backing up motor is stopped.