Electromagnetic Relay Arc Extinction Space via Segmented Base Holder
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Solution Overview
Problem
Existing electromagnetic relays face challenges in expanding the space for arc extinction without increasing manufacturing costs, as the base, which defines the positional relationship between components, requires high dimensional accuracy and redesigning the production line when the shape is changed.
Innovation Solution
The introduction of a separate base holder attached to the base in the direction of Lorentz force action creates additional space for arc extinction without altering the base's shape, allowing for expanded arc extinction spaces while maintaining manufacturing cost efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the base is enlarged to provide a wide space around the contacts for arc extinction, then the space for extinguishing the arc is expanded, but the manufacturing cost increases due to redesign requirements
Solution Approach 1:
The base is divided into two separate components: the base itself and the base holder. The base holder is attached to the base and provides the additional space for arc extinction. This segmentation allows the base to maintain its original shape and manufacturing process while the base holder extends the functional space without requiring redesign of the base or production line.
2Area of stationary object
If the shape of the base is changed to expand arc extinction space, then the space for extinguishing the arc is expanded, but the production line must be newly designed
Solution Approach 1:
By separating the base into a base and a base holder, the invention maintains the original base shape that is compatible with existing production lines. The base holder is an additional component that can be manufactured separately and attached to the base, thus expanding the arc extinction space without requiring changes to the base manufacturing process or production line design.
3Reliability
If the base is enlarged to provide space for Lorentz force action, then the arc extinction capability is improved, but the dimensional accuracy requirements become more difficult to maintain
Solution Approach 1:
The base holder is designed as a separate component from the base, allowing each part to be manufactured with appropriate dimensional accuracy for its specific function. The base maintains its precise dimensional requirements for component positioning, while the base holder provides the additional space for Lorentz force action without imposing additional precision requirements on the base manufacturing process.
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 expands the space for arc extinction in electromagnetic relays without increasing manufacturing costs by using a separate base holder to direct Lorentz force action, ensuring stable attachment and efficient arc extinguishing.
Implementation Method 1
The magnet exerts a Lorentz force on an arc generated between the fixed contact and the movable contact
Data Source
AI summary
An electromagnetic relay includes a base, a fixed terminal, a fixed contact, a movable piece, a movable contact, a magnet, a base holder, and a case. The fixed terminal is supported by the base. The fixed contact is connected to the fixed terminal. The movable piece is supported by the base. The movable contact is connected to the movable piece and faces the fixed contact. The magnet exerts a Lorentz force on an arc generated between the fixed contact and the movable contact. The base holder is a separate body from the base. The base holder is attached to the base. The base holder is disposed in at least a direction in which the Lorentz force acts with respect to the base. The case is attached to the base holder.