Bipolar Magnetic Latching Relay Synchronism
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Solution Overview
Problem
The existing bipolar magnetic latching relays used in electric card charge meters suffer from poor synchronism of on-off actions, high temperature rise, and difficulty in debugging due to their integral structure and unreasonable design, leading to inefficient energy use and reliability issues.
Innovation Solution
A bipolar magnetic latching relay design featuring two guide transmission parts connected to driving balls and movable contacts, allowing simultaneous control of output loops with reduced temperature rise and improved reliability, and a compact structure with enhanced movement precision and contact stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an integral structure adjusting part is used to couple two contact springs, then the device complexity is reduced, but the synchronism of on-off actions deteriorates and debugging difficulty increases
Solution Approach 1:
The patent divides the integral adjusting part into two separate adjusting parts (first adjusting part and second adjusting part), each independently adjusting one contact spring. This segmentation allows independent debugging of each contact's parameters while maintaining overall system coordination, resolving the contradiction between structural simplicity and operational synchronism.
2Manufacturing precision
If a single adjusting part controls both contact springs, then the manufacturing precision requirement is reduced, but the contact parameter matching precision deteriorates
Solution Approach 1:
By separating the adjusting mechanism into two independent adjusting parts, each contact spring's parameters (contact pressure, timing, travel) can be precisely adjusted independently. This eliminates the parameter coupling effect where adjusting one contact inadvertently changes the other, enabling precise parameter matching without requiring extremely tight manufacturing tolerances.
3Reliability
If one contact's on-off action is debugged, then the reliability of that contact is improved, but the other contact's reliability deteriorates due to coupled changes
Solution Approach 1:
The independent adjusting parts allow each contact to be debugged and optimized separately. When debugging the first contact, only the first adjusting part needs to be modified, leaving the second contact's parameters unchanged. This eliminates the trade-off where improving one contact's reliability causes the other contact's performance to deteriorate.
4Device complexity
If coupling mechanisms are designed to share a common adjusting part, then the device complexity is reduced, but the synchronism consistency of contact resistances deteriorates
Solution Approach 1:
The patent provides separate adjusting parts for each contact spring, enabling independent control of contact resistance characteristics. This segmentation allows each contact's electrical parameters to be optimized and matched separately, ensuring synchronism consistency of contact resistances without requiring complex coupled mechanisms.
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 design ensures reliable on-off actions, reduced temperature rise, and improved assembly efficiency by synchronizing the movement of guide transmission parts, enhancing the synchronism and reliability of contact operations while maintaining low power consumption.
Implementation Method 1
retained in one swing position due to the permanent magnetic force of the magnetic steel assembly 5
Implementation Method 2
the magnetic steel assembly 5 swings between two positions under the driving of an electric signal of the coil assembly 4
Data Source
AI summary
The bipolar magnetic latching relay comprises a coil assembly, a magnetic steel assembly that contains a permanent magnet and armatures, as well as two contact devices that are mounted at both sides of a base, wherein the magnetic steel assembly is pivotally connected with the base through a revolving pair, the magnetic steel assembly swings between two positions under the driving of an electric signal of the coil assembly and is retained in one swing position due to the permanent magnetic force of the magnetic steel assembly, and the swing synchronously drives the two contact devices to deflect, such that two pairs of first movable contacts and static contacts are subjected to closing/disconnecting fit. The magnetic steel assembly is provided with two driving heads that synchronously rotate along with the magnetic steel assembly and extend to the outside from the same direction. The relay further comprises two guide transmission parts that connect the two contact devices and the magnetic steel assembly, wherein a guide mechanism by which each guide transmission part moves along the swing direction of the free end of the movable flat spring is provided between the guide transmission part and the base, a driven end of the guide transmission part is connected with a driving head through a driving connection structure, and a driving end of the guide transmission part is coupled to the free end of the movable flat spring through an elastic transmission structure, such that the two guide transmission parts are the same in movement direction and simultaneously act.