Movable Permanent Magnet Blocking Device for Vibration Resistance
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Solution Overview
Problem
Existing blocking devices require precise manufacturing and arrangement of components to maintain a ball in position, are sensitive to vibrations, and have limitations in design due to the need for strong magnetic fields and specific distances, leading to potential unintended movement of the ball.
Innovation Solution
A blocking device featuring a movable permanent magnet on a ferromagnetic core with an electromagnet, where the magnet's position is changed by altering the magnetic field direction, allowing the blocking element to follow the magnet's movement and maintain engagement with a latching profile, enhancing vibration resistance and design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a permanent magnet generates a strong magnetic field to keep the ball in position, then the ball's position stability is improved, but the risk of unintended movement to the other end position increases due to vibrations
Solution Approach 1:
The patent makes the permanent magnet movable instead of fixed, allowing it to dynamically follow the blocking element's position. The magnet is guided along the locking profile and automatically positions itself to provide magnetic support where needed, adapting to vibrations and position changes without causing unintended movements
Solution Approach 2:
The movable permanent magnet acts as an intermediary between the blocking element and the ferromagnetic core. It provides a magnetic field that supports the blocking element in its position while being able to adapt its location, thereby mediating the interaction between the mechanical blocking structure and the magnetic field
2Force
If the ends of the legs of the iron core are positioned at a constant distance from the ball's running surface, then the magnetic force on the ball is sufficient, but the design flexibility of the control element is restricted
Solution Approach 1:
The ferromagnetic core structure is made adaptable through the movable permanent magnet that can position itself along the locking profile. This eliminates the need for precisely positioned fixed core ends at specific distances from the ball's running surface, as the magnetic support dynamically adjusts to the blocking element's position
Solution Approach 2:
The magnetic support function is segmented from the structural framework. The ferromagnetic core provides the structural support while the movable permanent magnet provides the magnetic field, allowing independent optimization of each component without the strict distance constraints that would otherwise be required
3Force
If the distance between the legs of the iron core is slightly larger than the distance between the two end positions of the sphere, then the end positions are in a sufficiently strong magnetic field area, but the manufacturing precision requirements increase
Solution Approach 1:
The movable permanent magnet eliminates the need for precise static positioning of core legs relative to the blocking element's end positions. The magnet dynamically positions itself to provide strong magnetic field support at whichever end position is currently active, removing the manufacturing precision constraints on the core structure
Solution Approach 2:
The system changes from a static magnetic field configuration with fixed core legs to a dynamic configuration where the permanent magnet's position varies. This parameter change allows the magnetic field strength at the blocking element's position to be maintained without requiring precise manufacturing tolerances on the core structure
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 high vibration resistance and flexibility in design, ensuring the blocking element remains engaged or disengaged as needed, even when the electromagnet is not energized, preventing unintended movement and improving the reliability of the blocking mechanism.
Implementation Method 1
The permanent magnet is arranged in the device in a moveable manner and can be moved between at least two end positions
Implementation Method 2
The blocking element can be brought into engagement with the locking profile
Implementation Method 3
an electromagnet on a ferromagnetic core, wherein the magnet's position is changed by altering the magnetic field direction
Implementation Method 4
allowing the blocking element to follow the magnet's movement and maintain engagement with a latching profile
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a blocking device for at least partially blocking a relative movement between a stationary (2) and a mobile part (3) of a facility (1). Said blocking device comprises at least one permanent magnet (6), a solenoid (4) on a ferromagnetic core (5), a notched profile (14) in the mobile part (3) and a blocking element (7) which can be engaged with the notched profile (14), the permanent magnet (6) being movably aranged in the facility (1) and being movable between at least two end positions.