Electromagnetic Relay Terminal Offset for Wiring Space
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Solution Overview
Problem
Conventional electromagnetic relays require additional space for wiring patterns due to bent wires and suffer from poor connection reliability due to simultaneous movement of movable terminals, leading to potential failures in contact.
Innovation Solution
The electromagnetic relay design features pairs of fixed terminals with externally projecting tip portions aligned in a straight line, offset from each other, and includes an armature and electromagnet to move movable terminals for electrical connection and disconnection, with cantilever structures for enhanced contact reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wires are bent to connect tip portions located on the inner side, then electrical connection is achieved, but space necessary for wiring pattern increases
Solution Approach 1:
The tip portions are arranged in a straight line extending in a direction substantially parallel to a virtual straight line in plan view, with offset positioning in the vertical direction. This spatial arrangement allows wires to connect directly without bending, eliminating the need for additional wiring space while maintaining electrical connection reliability.
2Ease of operation
If movable terminals move simultaneously to connect external terminals, then switching operation is achieved, but contact reliability deteriorates due to potential failure in contact
Solution Approach 1:
The movable terminals are configured to move independently rather than simultaneously. Each movable terminal can be actuated separately by the armature, ensuring that each contact connection is established reliably without interference from other terminals, thus maintaining both operational ease and contact reliability.
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 reduces the necessary space for wiring patterns and improves connection reliability by ensuring consistent contact between movable and fixed terminals, minimizing failures.
Implementation Method 1
an electromagnet including a pair of coil terminals and configured to be able to generate electromagnetic force for driving the armature to move each movable terminal
Data Source
AI summary
An electromagnetic relay includes plural pairs of fixed terminals each including an external input/output terminal and an external output/input terminal that can be electrically connected to the external input/output terminal the external input/output terminal and the external output/input terminal being paired with and separated from each other. A tip portion of the external input/output terminal and a tip portion of the external output/input terminal paired with each other are aligned along a straight line extending in a direction substantially parallel to a virtual straight line in a plan view, and the straight lines on which the respective pairs of the tip portions are aligned are offset from each other in a direction vertical to the virtual straight lines.