Hinge-Type Bistable Magnetic Circuit With Asymmetric Relay Assembly
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Solution Overview
Problem
Existing bistable magnetic circuit structures in relays have complex structures, numerous parts, high manufacturing costs, and complicated assembly processes due to symmetrical designs and intricate assembly requirements.
Innovation Solution
A hinge type bistable magnetic circuit structure with an asymmetrical L-shaped armature and yoke configuration, utilizing a seesaw-type movement mechanism with a simplified assembly process, reducing parts and processing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a symmetrical bistable magnetic circuit structure is used, then the relay can achieve stable open and closed states, but the structure becomes complex with many parts and complicated assembly
Solution Approach 1:
The patent applies asymmetry by designing the magnetic circuit structure with an L-shaped armature and L-shaped yoke that are positioned asymmetrically relative to each other. The armature and yoke form a frame-shaped profile where they are not symmetrically arranged, eliminating the need for complex symmetrical designs while maintaining the bistable functionality through the asymmetric magnetic path created by the permanent magnet and coil assembly.
2Reliability
If a complex bistable magnetic circuit structure is used, then the relay can maintain stable contacts, but the manufacturing cost increases
Solution Approach 1:
The patent merges multiple components into an integrated L-shaped armature and L-shaped yoke structure that together form a frame-shaped profile. This consolidation reduces the number of separate parts that need to be manufactured and assembled, simplifying the manufacturing process and reducing costs while maintaining the necessary magnetic circuit functionality for stable contact operation.
3Force
If a traditional bistable magnetic circuit structure is used, then the relay can achieve holding force, but the assembly process becomes complicated
Solution Approach 1:
The asymmetric L-shaped armature and L-shaped yoke configuration simplifies assembly by eliminating the need for precise symmetrical alignment. The frame-shaped profile formed by these components provides a natural assembly guide, reducing assembly complexity while the permanent magnet and coil assembly maintain the necessary holding force for reliable contact operation.
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 simplifies the structure, reduces manufacturing costs, and facilitates easier assembly while maintaining energy-saving functionality by eliminating the need for symmetrical designs and complex assembly procedures.
Implementation Method 1
a permanent magnet is provided in the magnetic circuit structure, and the permanent magnet is used to form a two-way magnetic circuit
Implementation Method 2
the magnetic field circuit generates a holding force on the action of the movable component
Implementation Method 3
the coil is only excited at the moment of opening and closing of the movable and stationary contacts
Data Source
AI summary
A hinge type bistable magnetic circuit structure, including a coil assembly, an L-shaped armature, an L-shaped yoke and a permanent magnet the L-shaped armature is configured on a side of the L-shaped yoke after rotating 180 degrees, and the two are together formed a frame-shaped profile, at two opposite diagonals of the frame-shaped profile, a junction is provided with a pre-set first gap; the L-shaped yoke includes a first and a second yoke portion, the coil assembly is arranged at and cooperated with the first yoke portion, one end of the permanent magnet is connected with the first yoke portion; the L-shaped armature includes a first and a second armature portion, the first armature portion is configured to cooperated with the other end of the permanent magnet so as to be able to perform a seesaw type movement, thereby forming a bistable magnetic circuit.