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Magnetic circuit system of electromagnetic relay, and application

A technology of electromagnetic relay and magnetic circuit system, which is applied in the direction of electromagnetic relay, electromagnetic relay details, relay, etc., can solve the problems of poor shock and vibration resistance, magnetic steel occupying winding space, and large mass of movable parts, etc., to achieve reduction The effect of small mass, compact structure and small volume

Inactive Publication Date: 2008-01-09
XIAMEN HONGFA ELECTROACOUSTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the above requirements, the general electromagnetic relay adopts a magnetic circuit structure with magnetic steel to reduce volume and energy consumption, and improve sensitivity and reliability. The known magnetic circuit structures are as follows: CN02134301.2 Invention patents and JP09-139166 invention patents disclose an "E"-shaped magnetic circuit structure with magnetic steel. The disadvantages are that the magnetic circuit structure is complicated, and the magnetic steel and / or supporting magnetizers occupy a certain amount of winding space. The armature and the supporting magnetic conductor are metal frictions, which are easy to produce powder
US4695813 invention patent discloses a "mouth" magnetic circuit. This magnetic circuit has a complex structure, requires high parts precision and high assembly precision, and the magnetic steel occupies a certain winding space. The armature and the magnetic steel are metal and metal. Contact, easy friction to produce powder
Patent No. US6670871 discloses a magnetic circuit with movable magnetic steel. The movable part of this magnetic circuit structure has large mass, large inertia, poor shock and vibration resistance, and low working reliability, and the magnetic steel also occupies A certain space inside the relay

Method used

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  • Magnetic circuit system of electromagnetic relay, and application
  • Magnetic circuit system of electromagnetic relay, and application
  • Magnetic circuit system of electromagnetic relay, and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Fig. 1 has provided an embodiment of the present invention, and this magnetic circuit system comprises stationary magnetic conductor 11c, magnetic steel 11d, coil 13 and movable magnetic conductor 31 and support member 22 thereof, and magnetic steel 11d is placed on the stationary magnetic conductor 11c In the middle, the two form a "C"-shaped part 11, the coil 13 is wound on the "C"-shaped part 11, and there is an insulating material between them, and the insulating material can be injection-molded together with the "C"-shaped part 11, It can also be wrapped or coated on the "C" shaped part 11. In the magnetic circuit system, the magnetic steel 11d is placed in the center of the stationary magnetizer 11c, and the magnetic field strength of the magnetic steel 11d is uniform. , forming two magnetic circuits 51 and 52 with uniform magnetic field strength in the magnetic circuit. Under the condition that the coil 13 is not powered, the magnetic circuit has two stable state...

Embodiment 2

[0023] FIG. 2 shows another embodiment of the present invention. In the magnetic circuit system, the magnetic steel with uniform magnetic field strength is placed on the side of the stationary magnetizer 11c, so that the magnetic field strength of the magnetic circuit is not uniform. In FIG. 2 , other symbols are the same as those in FIG. 1 .

Embodiment 3

[0025] FIG. 3 shows another embodiment of the present invention. In the magnetic circuit system, the magnetic steel 11d with uneven magnetic field strength is placed in the center of the stationary magnetizer 11c, so that the magnetic field strength of the magnetic circuit is uneven. In FIG. 3 , other symbols are the same as those in FIG. 1 .

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Abstract

The disclosed magnetic system includes a C shaped stationary magnetizer, magnetic steel, coil, movable magnetizer and supporting piece. The magnetic steel placed inside the stationary magnetizer is faced to the movable magnetizer. Coil is wound on the C-shaped part, and the supporting piece is located at middle part of the movable magnetizer. There is an insulating layer between C-shaped part and the coil. The insulating layer is injection-molded with the C-shaped part together, or wrapped on or coated on the C-shaped part. Comparing with E shaped structure, the C-shaped structure possesses following advantages: not holding space for coil and inner space for relay, reducing mass of movable part and requirement for part precision and assembling precision as well as powder produced, compact structure and small size, high sensitivity and reliability. The invention simplifies manufacturing technique, and is suitable to pipeline operation.

Description

technical field [0001] The invention relates to an electromagnetic relay, in particular to a magnetic circuit system for the electromagnetic relay. Background technique [0002] Electromagnetic relays are widely used in automatic control equipment. Due to the needs of technological development, relays are required to be more compact in structure, smaller in size, higher in sensitivity, higher in reliability, and lower in energy consumption. In order to meet the above requirements, the general electromagnetic relay adopts a magnetic circuit structure with magnetic steel to reduce volume and energy consumption, and improve sensitivity and reliability. The known magnetic circuit structures are as follows: CN02134301.2 Invention patents and JP09-139166 invention patents disclose an "E"-shaped magnetic circuit structure with magnetic steel. The disadvantages are that the magnetic circuit structure is complicated, and the magnetic steel and / or supporting magnetizers occupy a certa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H50/16
Inventor 王俊青
Owner XIAMEN HONGFA ELECTROACOUSTIC CO LTD