Electromagnetic Relay Frame Card Adjustment Opening
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Solution Overview
Problem
Conventional electromagnetic relays face challenges in adjusting operation characteristics, leading to increased variations and time-consuming adjustment processes due to the direct placement of the card's frame portion between the magnetic pole and iron core, making precise adjustments difficult.
Innovation Solution
The electromagnetic relay design incorporates a frame-shaped card with protrusions and an adjustment opening between them, allowing for easier adjustment by inserting a thickness gauge, and optionally includes a slit for elastic deformation and improved assembly, enhancing the reliability and rigidity of the card.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the card's frame portion is disposed directly overhead between the magnetic pole and iron core, then the structure is simple, but adjustment of operation characteristics becomes difficult and time-consuming
Solution Approach 1:
The card is divided into a frame portion and a contact mechanism portion, with the frame portion further segmented to include an adjustment opening. This segmentation allows the adjustment opening to be accessed independently for insertion of thickness gauges, enabling easy adjustment of operation characteristics while preserving the overall simple structure.
Solution Approach 2:
A thickness gauge is introduced as an intermediary tool that can be inserted through the adjustment opening to facilitate precise adjustment of the card's position and operation characteristics. This intermediary element enables easy adjustment without complicating the basic structure.
2Device complexity
If the card's frame portion is disposed directly overhead between the magnetic pole and iron core, then the structure is simple, but variations in operation characteristics increase
Solution Approach 1:
The frame portion is segmented to include a dedicated adjustment opening, which allows for precise control of the card's position relative to the magnetic pole and iron core. This segmentation enables consistent adjustment and reduces variations in operation characteristics while keeping the overall structure simple.
Solution Approach 2:
The adjustment opening enables changes in the positional parameter of the card by inserting thickness gauges of different thicknesses. This parameter change capability allows for precise control and consistency of operation characteristics without increasing structural complexity.
3Reliability
If protrusions are provided on the card to hold the movable iron piece, then the movable iron piece is securely held, but adjustment access becomes limited
Solution Approach 1:
The card features asymmetric design with protrusions provided only on one side to hold the movable iron piece, while the other side maintains an adjustment opening. This asymmetric arrangement allows the protrusions to provide secure engagement on one side while the adjustment opening remains accessible on the opposite side for insertion of thickness gauges.
Solution Approach 2:
The adjustment opening is positioned in a different spatial dimension relative to the protrusions, allowing adjustment access from a direction that does not interfere with the engagement function of the protrusions. This dimensional separation enables both functions to coexist without interfering with each other.
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
Facilitates efficient adjustment of operation characteristics, reduces variation, and improves assembly and reliability by allowing precise adjustments and elastic deformation, resulting in improved performance and reduced assembly time.
Implementation Method 1
an electromagnetic block formed by winding a coil around the iron core
Implementation Method 2
a movable iron piece that is rotated by being attracted to and separated from a magnetic pole portion of an iron core based on excitation and non-excitation
Data Source
AI summary
An electromagnetic relay includes an electromagnetic block formed by winding a coil around an iron core and a frame shaped card. One end portion of the frame-shaped card is engaged with a movable iron piece that is rotated by being attracted to and separated from a magnetic pole portion of the iron core based on excitation and non-excitation of the electromagnetic block. The electromagnetic relay also includes a contact mechanism portion configured to be driven by the other end portion of the frame-shaped card that makes a reciprocating movement so as to open/close contacts and a pair of protrusions protrusively provided on the same shaft center inside of the one end portion of the frame-shaped card. Both side edge portions of the movable iron piece are held by the one end portion of the card and the protrusions. An adjustment opening is provided between the pair of protrusions.