Polar Electromagnet with Movable Iron Core Permanent Magnet
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Solution Overview
Problem
Conventional polar electromagnet devices have high power consumption and limited space for winding coils due to the arrangement of permanent magnets, leading to larger device sizes and increased power usage.
Innovation Solution
A polar electromagnet device with a permanent magnet integrally arranged on a movable iron core that reciprocates with the drive shaft, allowing the magnet to act repulsively against the coil's magnetic force, reducing operation voltage and power consumption, and utilizing an annular auxiliary yoke for enhanced magnetic efficiency and quick operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the permanent magnet is arranged on the lower end side of the coil bobbin as in conventional devices, then the device structure is simple, but the power consumption is large and the device size increases
Solution Approach 1:
The patent inverts the conventional arrangement by placing the permanent magnet on the movable iron core instead of on the coil bobbin. This inversion allows the magnet to move with the iron core during operation, creating a repulsive force that reduces the power consumption of the coil while enabling a more compact device design
2Use of energy by moving object
If the permanent magnet is arranged on the movable iron core, then the power consumption is reduced, but the magnetic force interaction becomes more complex
Solution Approach 1:
The patent converts the potential complexity of magnetic force interaction into a benefit by utilizing the repulsive force between the permanent magnet on the movable iron core and the coil's magnetic field. This repulsive force assists in reducing power consumption while the yoke structure manages the magnetic flux paths efficiently
3Power
If more coils are wound to increase magnetic force, then the magnetic efficiency improves, but the device size increases due to limited winding space
Solution Approach 1:
By inverting the magnet position to the movable iron core, the patent creates additional winding space around the coil bobbin. This allows more coils to be wound without increasing device size, thereby increasing the magnetic force and power output while maintaining a compact form factor
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 results in a smaller, low-power consumption polar electromagnet device with improved magnetic efficiency and quick operation characteristics, reducing the likelihood of mistaken operations and enhancing reliability.
Implementation Method 1
a drive shaft is supported so as to reciprocate in an axis center direction at a center hole of a spool wound with a coil, a movable iron core is attached to a lower end of the drive shaft on the same axis center, and the drive shaft is reciprocated with the movable iron core which reciprocates based on excitation and demagnetization of the coil
Implementation Method 2
the permanent magnet integrally arranged on the movable iron core acts repulsively to the magnetic force generated by the excitation of the coil in time of operation, and the movable iron core integrally arranged with the permanent magnet operates, whereby the operation voltage becomes lower than in the related art
Data Source
AI summary
A polar electromagnet device has a drive shaft comprising an axis center supported so as to reciprocate in an axis center direction at a center hole of a spool wound with a coil, and a movable iron core attached to a lower end of the drive shaft on the axis center. The drive shaft is reciprocated with the movable iron core which reciprocates based on excitation and demagnetization of the coil. A permanent magnet is integrally arranged at the movable iron core on the same axis center.