Relay Electromagnetic Drive Structure for Stronger Attraction Force
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Solution Overview
Problem
Conventional high-voltage direct current relays face challenges in enhancing electromagnetic attraction force while maintaining low driving power consumption and small volume.
Innovation Solution
The electromagnetic driving unit features a static attraction member with a radially augmented portion or a magnetic conductive ring, which increases the orthographic projection area to effectively absorb magnetic flux leakage, enhancing the electromagnetic attraction force without increasing volume or power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If coil winding space and coil driving power are increased to enhance electromagnetic attraction force, then electromagnetic attraction force is improved, but driving power consumption and volume increase
Solution Approach 1:
The static attraction member is designed with a radially augmented portion that has a larger projection area than the movable attraction member. This local quality enhancement concentrates the magnetic flux in a specific region, improving the electromagnetic attraction force without requiring increased coil driving power or volume.
Solution Approach 2:
The patent introduces a radial dimension enhancement through the radially augmented portion of the static attraction member. By extending the projection area in the radial direction rather than increasing coil winding space, the magnetic flux distribution is optimized, achieving stronger attraction force without increasing overall volume or power consumption.
2Force
If coil winding space and coil driving power are increased to enhance electromagnetic attraction force, then electromagnetic attraction force is improved, but volume increases
Solution Approach 1:
The static attraction member features a radially augmented portion with enhanced projection area, creating a localized region of concentrated magnetic flux. This local enhancement achieves stronger electromagnetic attraction force without requiring proportional increases in overall relay volume.
Solution Approach 2:
The solution utilizes radial extension of the static attraction member's projection area rather than increasing coil winding space. This dimensional approach optimizes magnetic flux distribution within the existing volume, achieving improved attraction force without volume increase.
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
This solution effectively enhances the electromagnetic attraction force of the relay, improving its performance while adhering to the requirements of low power consumption and small volume.
Implementation Method 1
a coil wound on the bobbin; a movable attraction member disposed in the inner hole; and a static attraction member disposed at an end of the inner hole and opposite to the movable attraction member
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The present disclosure provides an electromagnetic driving unit and a relay. The electromagnetic driving unit comprises a framework (4), a coil (5), a moving attraction member, and a static attraction member; the coil (5) is wound on the framework (4); the framework (4) is provided with an inner hole (41); the moving attraction member is disposed in the inner hole (41); and the static attraction member is disposed at one end of the inner hole (41) and opposite to the moving attraction member. Taking a plane perpendicular to the axial direction of the inner hole (41) as a projection surface, the area of the orthographic projection of the moving attraction member on the projection surface is a first projection area, the area of the orthographic projection of the static attraction member on the projection surface is a second projection area, the second projection area being greater than the first projection area. In the present disclosure, the static attraction member can effectively absorb leakage flux in a magnetic circuit, and therefore, the electromagnetic attraction force of the electromagnetic driving unit is increased.