Rear View Element Folding Device Using Dual Actuators
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Solution Overview
Problem
Existing rear view element folding devices for motor vehicles have complex structures due to the use of a single motor for locking and unlocking, leading to noise and reduced efficiency in positioning changes.
Innovation Solution
A dual-actuator system, where one actuator uses a shape memory alloy (SMA) for unlocking and the other a magnetic angle adjuster or motor for rotation, allowing for a simple structure, reduced noise, and faster positioning without compromising safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single motor is used for both locking/unlocking and positioning changes, then the device structure is simplified, but the noise level increases and positioning efficiency decreases
Solution Approach 1:
The patent divides the actuation system into two separate actuators: one dedicated to locking/unlocking operations and another for positioning changes. This segmentation allows each actuator to be optimized for its specific function, reducing noise and improving efficiency while maintaining structural simplicity through modular design.
2Device complexity
If a single motor is used for both locking/unlocking and positioning changes, then the device structure is simplified, but the positioning speed decreases
Solution Approach 1:
The patent divides the actuation system into two separate actuators: one dedicated to locking/unlocking operations and another for positioning changes. This segmentation allows each actuator to be optimized for its specific function, reducing noise and improving efficiency while maintaining structural simplicity through modular design.
3Device complexity
If a single motor is used for locking and positioning, then fewer components are needed, but the reliability of locking is compromised
Solution Approach 1:
The patent divides the actuation system into two separate actuators: one dedicated to locking/unlocking operations and another for positioning changes. This segmentation allows each actuator to be optimized for its specific function, reducing noise and improving efficiency while maintaining structural simplicity through modular design.
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 dual-actuator system enables quick and precise positioning of the rear view element, reducing noise and maintaining safety while allowing for rapid adjustment and extended service life.
Implementation Method 1
a first actuator for a translation movement of a first engagement element that is firmly connected to the element housing relative to a second engagement element that is connected to the element foot
Implementation Method 2
wherein through a first rotational movement, a first rotation position of the element housing can be approached from the unlocked resting position
Implementation Method 3
a second, separate actuator for a rotational movement for rotating the first engagement element relative to the second engagement element around the rotation axis
Data Source
AI summary
A rear view element folding device for a motor vehicle is disclosed for approaching at least one pivot position of an element housing relative to an element foot that can be mounted on the motor vehicle. The rear view element folding device locks or unlocks at least one resting position of the element housing relative to the element foot. A method for triggering such a rear view element folding device is also disclosed.