Magnetic Blocking Element for Compact Rotation Locking
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Solution Overview
Problem
Existing rotation locking devices for aeronautical applications, such as aileron or aircraft flap systems, are often bulky and complex due to the use of solenoid electromagnetic actuators, making them difficult to integrate into compact systems.
Innovation Solution
A compact rotation blocking device featuring a stator with a coil and a blocking element made of magnetically sensitive material, where the coil creates a magnetic field to actuate the blocking element between interaction and retracted positions, with an elastic return mechanism ensuring reliable operation, including safety during power failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solenoid electromagnetic actuator is used to actuate the locking element, then the locking device can reliably control the locking element between interaction and retracted positions, but the device size becomes large and integration becomes difficult
Solution Approach 1:
The patent merges the actuator core with the locking element itself. The locking element is made of magnetically sensitive material and serves dual functions: as the locking mechanism and as the moving core of the electromagnetic actuator. This eliminates the need for a separate actuator component, significantly reducing device volume while maintaining reliable control through the magnetic field generated by the coil.
Solution Approach 2:
The locking element is designed to perform multiple functions simultaneously: it acts as both the locking mechanism that prevents rotor rotation and as the movable core of the electromagnetic actuator. This multi-functionality reduces the overall component count and device complexity while ensuring reliable operation.
2Ease of operation
If a separate moving core actuator is used, then the locking element can be precisely controlled, but the device complexity increases
Solution Approach 1:
The patent combines the locking element and the moving core into a single component. The locking element is constructed from magnetically sensitive material that responds directly to the coil's magnetic field, eliminating the need for a separate moving core and reducing structural complexity while maintaining precise actuation control.
Solution Approach 2:
The locking element serves dual purposes: as the locking mechanism and as the actuator's moving core. This multi-functionality simplifies the overall device structure by reducing the number of components and assembly steps while preserving precise control capabilities through the magnetic field interaction.
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 provides a compact, reliable, and efficient rotation locking mechanism that reduces device complexity and size, ensuring safe operation by automatically returning the blocking element to a secure position in the absence of power.
Implementation Method 1
The actuating means comprises a coil (7) wound on the stator (1) and connected to a control unit (11) to energize the coil (7) so as to create a magnetic field
Implementation Method 2
the locking element (4) is made of a magnetically sensitive material such that energizing the coil (7) causes the locking element (4) to move
Implementation Method 3
the actuation means includes an elastic element (9) for returning the locking element (4) to its other position
Data Source
Figure 1~3
AI summary
Rotation-blocking device, comprising a stator (1), a rotor (2), at least one blocking element (4) mounted between the stator and the rotor to be able to move between a position of interaction with the rotor and the stator and a position in which it is retracted with respect to the rotor, and an actuating means which comprises a coil (7) wound on the stator, and connected to a control unit (11) for powering the coil so as to create a magnetic field, the blocking element being made of a material sensitive to the magnetic field so that powering the coil causes the blocking element to move toward one of the positions thereof. Rotary actuator comprising such a device.