Electromagnetic Relay Segmented Contact Mechanisms

Solution Overview

Problem

Conventional electromagnetic relays with single contacts on movable and fixed contact pieces have low contact reliability and are costly to manufacture, while those with multiple contacts are difficult to adjust and complicate the manufacturing process.

Innovation Solution

An electromagnetic relay design incorporating both single and multiple contact mechanisms, where at least one contact mechanism has movable and fixed parts with one contact and another with multiple contacts, allowing for increased reliability and cost-effective production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If each contact mechanism is provided with one contact, then the manufacturing cost is reduced, but the contact reliability is low

Engineering Contradiction:

Improvecontact reliabilityVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The relay device is divided into multiple contact mechanisms, where some are configured with single contacts and others with multiple contacts. This segmentation allows different reliability levels to be assigned to different contact mechanisms based on their functional requirements, thereby improving overall contact reliability while controlling manufacturing costs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different contact mechanisms are assigned different contact configurations (single or multiple contacts) according to their specific functional requirements. Critical contacts that require higher reliability are configured with multiple contacts, while non-critical contacts use single contacts, achieving local optimization of reliability versus cost.

Inventive Principle:

Principle #3Local quality

2Reliability

If each contact mechanism is provided with multiple contacts, then the contact reliability is improved, but the manufacturing process becomes complex and costly

Engineering Contradiction:

Improvecontact reliabilityVSAvoidmanufacturing process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The relay device is divided into multiple contact mechanisms, where some are configured with single contacts and others with multiple contacts. This segmentation allows different reliability levels to be assigned to different contact mechanisms based on their functional requirements, thereby improving overall contact reliability while controlling manufacturing costs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different contact mechanisms are assigned different contact configurations (single or multiple contacts) according to their specific functional requirements. Critical contacts that require higher reliability are configured with multiple contacts, while non-critical contacts use single contacts, achieving local optimization of reliability versus complexity.

Inventive Principle:

Principle #3Local quality

3Reliability

If each contact mechanism is provided with multiple contacts, then the contact reliability is improved, but the manufacturing cost increases

Engineering Contradiction:

Improvecontact reliabilityVSAvoidnumber of contacts

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The relay device is divided into multiple contact mechanisms, where some are configured with single contacts and others with multiple contacts. This segmentation allows different reliability levels to be assigned to different contact mechanisms based on their functional requirements, thereby improving overall contact reliability while controlling manufacturing costs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different contact mechanisms are assigned different contact configurations (single or multiple contacts) according to their specific functional requirements. Critical contacts that require higher reliability are configured with multiple contacts, while non-critical contacts use single contacts, achieving local optimization of reliability versus quantity.

Inventive Principle:

Principle #3Local quality

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 enhances contact reliability while maintaining cost efficiency by combining single and multiple contact mechanisms, improving the electromagnetic relay's performance and manufacturing simplicity.

Implementation Method 1

electromagnetic relay having six contact mechanisms, wherein five contact mechanisms are disposed on the one side of its electromagnetic operation device and one contact mechanism on the other side

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP3128530B1Electromagnetic relay

Publication Date: 2017.12.20 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

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AI summary

An electromagnetic relay (1) is formed by assembling a drive part (30), mobile body (50) that moves when the drive part (30) is driven, and a plurality of contact mechanisms (60, 70) that switch the contact and separation of contacts (61d, 62d, 71d, 72d) by the movement of the mobile body (50) in a body (40) . Furthermore, the plurality of contact mechanisms (60, 70) has respective movable contact parts (61, 71) and fixed contact parts (62, 72). The electromagnetic relay (1) has at least one contact mechanism (60) provided with contacts (61d, 62d) connected respectively to the movable contact part (61) and fixed contact part (62) and also has at least one contact mechanism (70) in which either or both of the movable contact part (71) and fixed contact part (72) is provided with a plurality of contacts (71d, 72d).