Electromagnetic relay

Inactive Publication Date: 2006-06-22
MATSUSHITA ELECTRIC WORKS LTD
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0021] In this configuration, when large current such as short-circuited current passes through the main contact unit, the main mobile contact can come in contact with the main fixed contac

Problems solved by technology

In other words, since the braided wire 23′ is essential, there is a problem with increase in the number of process steps for welding the braided wire 23′.
In a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example

[0031] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the attached drawings.

[0032] An electromagnetic relay according to an embodiment of the invention has a frame body 1 including a body 11, an intermediate body 12, and a cover 13, as shown in FIG. 3. Main contact units 2A and 2B, arc contact units 3A and 3B, an auxiliary contact unit 4, and an electromagnet 5, which are all described in detail later, are received in the frame body 1 (see FIGS. 1 and 2). The body 11, the intermediate body 12, and the cover 13 are made of, for example, poly butylene terephthalate (PBT).

[0033] The body 11 has a shape that an outer circumferential wall 11b protrudes along the rim of a side plate 11a from a surface (a top surface in FIG. 3) in the thickness direction of the side plate 11a. That is, the body 11 has a shape that one surface in the thickness direction of the side plate 11a is opened and the other surface is closed.

[0034] The inter

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Provided is an electromagnetic relay which does not require a braided wire for securing a current capacity of a main contact unit. The electromagnetic relay includes a main contact unit 2 A inserted into a power supply path to a load and an arc contact unit 3 A connected in parallel to the main contact unit 2A. An auxiliary contact unit 4 is electrically independent of the main contact unit 2 A and the arc contact unit 3A. The main contact unit 2 A includes a main fixed contact 27 fixed to a frame body 1 and a main contact spring 23 made of a leaf spring and fitted with a main mobile contact 25 which is attached to and detached from the main fixed contact 27. The arc contact unit 3 A and the auxiliary contact unit 4 are arranged adjacent to each other. The main contact spring 23 extends in a direction in which the arc contact unit 3 A and the auxiliary contact unit 4 are arranged. Therefore, the main contact spring 23 can be formed with a large length in the frame body 1 and the sectional area can be enhanced without increasing a spring constant, thereby not requiring a braided wire.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Owner MATSUSHITA ELECTRIC WORKS LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap