Electromagnetic Relay Alignment Part for Armature Positioning
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Solution Overview
Problem
Existing electromagnetic relays face challenges in precisely controlling the position of the movable plunger due to inaccuracies in the dimensions or position of the insulating tube and auxiliary yoke, affecting the return position of the movable armature.
Innovation Solution
An electromagnetic relay design with a housing featuring a first and second compartment separated by an insulating wall, including a solenoid and alignment part at the insulating wall to accurately determine the return position of the movable armature, ensuring precise positioning by maintaining the accuracy of the insulating wall dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an insulating tube and auxiliary yoke are used to determine the return position of the movable plunger, then the structure is simple and easy to manufacture, but the positioning precision of the movable armature is insufficient due to dimensional inaccuracies
Solution Approach 1:
The patent introduces an alignment part as an intermediary component between the insulating wall and the movable armature. This alignment part serves as a mediator that transfers the positioning function from the previously used insulating tube and auxiliary yoke, achieving more precise positioning while maintaining structural simplicity. The alignment part is integrated into the insulating wall structure, eliminating the need for separate insulating tube and auxiliary yoke components.
2Measurement precision
If the insulating tube dimensions and auxiliary yoke position are used to control the return position, then the device structure is simplified, but the accuracy of the movable plunger position is affected by cumulative errors
Solution Approach 1:
The patent merges the alignment function previously distributed across the insulating tube and auxiliary yoke into a single integrated alignment part that is directly formed on the insulating wall. This consolidation eliminates the cumulative dimensional errors that occurred when multiple separate components were assembled together, while actually simplifying the manufacturing process by reducing the number of parts and assembly steps.
3Reliability
If multiple components (insulating tube, auxiliary yoke) are used for positioning, then the structure provides redundancy, but the overall system accuracy is limited by the least precise component
Solution Approach 1:
The patent extracts and eliminates the unnecessary insulating tube and auxiliary yoke components, retaining only the essential alignment function integrated into the insulating wall. This removal of redundant components eliminates the dimensional accuracy limitations imposed by the least precise component, while the alignment part provides sufficient positioning reliability through its direct integration with the housing structure.
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 design allows for highly accurate positioning of the movable armature within the housing, improving precision compared to previous technologies where the accuracy of the insulating tube and auxiliary yoke impacted the return position.
Implementation Method 1
a solenoid in the second compartment configured to drive the movable shaft in the contact movement direction
Data Source
AI summary
An electromagnetic relay is provided with a housing; a first fixed contact terminal and a second fixed contact terminal secured to the housing; a movable contact accommodated in a chamber in the housing; a movable shaft with one end connected to the movable contact, and a solenoid configured to drive the movable shaft in a contact movement direction. The solenoid includes: a spool with a through-hole in the drum; a fixed armature secured in the through-hole; and a movable armature arranged between the fixed armature in the through-hole and an insulating wall; the movable armature is configured to travel with the movable shaft between an operation position and a return position. The housing includes an alignment part that determines the return position of the movable armature.