CN103295843B

CN103295843B - Containing permanent magnetism double C-type yoke structure

Info

Publication number: CN103295843B
Application number: CN201310194814.9A
Authority: CN
Inventors: 梁慧敏; 叶雪荣; 李博; 由佳欣; 罗福彪; 付颖华
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2013-05-23
Filing date: 2013-05-23
Publication date: 2016-06-22
Anticipated expiration: 2033-05-23
Also published as: CN103295843A

Abstract

Disclosure is a kind of containing permanent magnetism double C-type yoke structure, including outer yoke, for hollow cylindrical structure, goes to the bottom and outer yoke sidewall including outer yoke upper base, outer yoke；Permanent magnet, fixes with described outer yoke sidewall and is connected to produce magnetic attraction；Interior yoke, is positioned at inside described outer yoke, fixes with described permanent magnet and is connected；Described interior yoke is hollow circular cylinder structure, goes to the bottom and interior yoke sidewall including interior yoke upper base, interior yoke；Armature, is positioned at inside described outer yoke, runs through from the central circular of described interior yoke, goes to the bottom and armature sidewall including armature upper base, armature；Described armature has the space of up and down motion relative to described interior yoke；And coil rack, coil, connecting rod and spring；Wherein, described outer yoke, interior yoke and armature are permeability magnetic material。

Description

Containing permanent magnetism double C-type yoke structure

Technical field

The present invention relates to relay field, can be applicable to the novel containing permanent magnetism double C-type yoke structure of the multiple electromagnetic systems such as relay particularly to a kind of。

Background technology

Classify to containing permanent-magnet relay from the motor pattern of armature, the classes etc. such as rotation armature type, direct acting armature type can be divided into；Wherein Direct Action Type relay is very important one big class relay, and it has simple in construction, is widely used, the feature of stable performance；Especially have a wide range of applications in space flight, national defence and civil area。Direct Action Type is containing in permanent-magnet relay, permanent magnet provides the retentivity under steady statue, armature is the device wherein undertaking switch motion, and yoke is the device wherein undertaking limiting position of armature, centered by them, the whole energized relay circuit of other device such as connecting coil iron core, magnetic guiding loop composition directly decides the overall performance containing permanent-magnet relay；Its corresponding structural design of magnetic circuit can improve the utilization ratio of permanent magnet greatly, and corresponding with attractive force and spring force characteristics design load；Magnetic flux constraint is efficient, the magnetic circuit of simple structure, it is possible to make product practical set more efficient, better with batch products concordance, and can reduce the percent defective of batch products。

Summary of the invention

It is an object of the invention to provide a kind of magnetic flux and retrain yoke structure efficient, simple structure, thus improving the practical set efficiency of product, rate of reducing the number of rejects and seconds。

For reaching above-mentioned purpose, the present invention provides a kind of containing permanent magnetism double C-type yoke structure, including:

Outer yoke, for hollow cylindrical structure, goes to the bottom and outer yoke sidewall including outer yoke upper base, outer yoke；

Permanent magnet, fixes with described outer yoke sidewall and is connected, in order to produce magnetic attraction；

Interior yoke, is positioned at inside described outer yoke, fixes with described permanent magnet and is connected；Described interior yoke is hollow circular cylinder structure, goes to the bottom and interior yoke sidewall including interior yoke upper base, interior yoke；Described interior yoke upper base and described interior yoke are gone to the bottom and are annular, and between described interior yoke is gone to the bottom and described outer yoke is gone to the bottom, all leave gap between described interior yoke upper base and described outer yoke upper base；

Armature, is positioned at inside described outer yoke, runs through from the central circular of described interior yoke, goes to the bottom and armature sidewall including armature upper base, armature；Described armature upper base is gone to the bottom as the identical circle of diameter with armature, and the diameter gone to the bottom of described armature upper base and armature is more than the annular diameters of described interior yoke；The height of described armature sidewall is more than the height of described interior yoke sidewall, so that described armature has the space of up and down motion relative to described interior yoke；

Coil rack, ring-like, between described interior yoke and described armature, with wound on it for coil；

Coil, is wrapped on described coil rack, produces electromagnetism magnetic flux when energising；

Connecting rod, through the center of described outer yoke and described armature, fixes with described armature and is connected；

Spring, is arranged on described connecting rod, is used for driving described link motion；

Wherein, described outer yoke, interior yoke and armature are permeability magnetic material。

Preferably, described permanent magnet is two, is fan ring-like, is symmetrically dispersed in described armature cylinder both sides。

Preferably, the material of described permanent magnet is the one in neodymium iron boron, aluminum nickel cobalt or ferrite。

A kind of novel magnetic Circuit Design containing permanent magnetism double C-type yoke structure that can be applicable to the multiple electromagnetic systems such as relay provided by the present invention, is suitably employed in the equipment such as direct drive type electro magnetic system such as relay, catalyst, chopper, electromagnetic valve, magnetic switch。Compared with prior art, the present invention has full symmetric structure, and part universality is strong, and assembling is simple；Two-way magnetic keeps, and it is adjustable that permanent magnet adjusts retentivity, coordinates different counter-force designs can obtain more flexible configuration mode；Product can be made to have good resistance to shock, and practical set is more efficient, with batch products coherence enhancing, and reduces the percent defective of batch products。

Accompanying drawing explanation

Fig. 1 is the magnetic circuit basic structure sectional view of patent of the present invention；

Fig. 2 be patent of the present invention magnetic circuit in permanent magnet magnetizing direction schematic diagram；

Fig. 3 is the disjunction position magnetic circuit schematic cross-section of patent of the present invention；

Fig. 4 is the on-position magnetic circuit schematic cross-section of patent of the present invention；

Fig. 5 is certain product structure design sectional view (without main contacts and arc-chutes) that patent of the present invention is applied to relay electro-magnetic system；

Fig. 6 is certain product structure design outside drawing (without main contacts and arc-chutes) that patent of the present invention is applied to relay electro-magnetic system。

Description of reference numerals: a1-armature；A2, a3-permanent magnet；Yoke in a4-；The outer yoke of a5-；A6-coil；A7-coil rack；A8-connecting rod；B1-armature, b2, b3-permanent magnet, yoke in b4-, the outer yoke of b5-, b6-coil, b7-coil rack, b8-connecting rod。

Detailed description of the invention

Below in conjunction with accompanying drawing, with regard to the present invention, above-mentioned and other technical characteristic and advantage are described further。

Referring to Fig. 1-Fig. 4, the present invention includes armature a1, permanent magnet a2, a3, interior yoke a4, outer yoke a5, coil a6 on concrete structure, and coil rack a7, connecting rod a8 etc., wherein armature a1, interior yoke a4, outer yoke a5 material properties is high permeability material。

Permanent magnet a2 is magnetic shoe structure, magnetizing direction is radial magnetizing, and interior yoke a4 contacts with a face on permanent magnet a2, a3 magnetizing direction, and outer yoke a5 contacts with another face on permanent magnet a2, a3 magnetizing direction, at armature a1 both as touching parts, also serve as the iron core of coil 6。

In the present invention, armature a1 lateral cross section is circular, and longitudinal cross-section is designed as I-shaped；The position of permanent magnetism a2, a3 can be designed as multiple arrangement mode as required, and the selection of permanent magnet also can change the various material such as neodymium iron boron, aluminum nickel cobalt, ferrite into according to designing requirement, and it provides the retentivity effect of end for armature；The longitudinal cross-section structural design of interior yoke a4 is to C shape, with the central shaft of whole magnetic circuit for axis of symmetry, it is easy to processing, symmetrical configuration also reduces the difficulty of assembling simultaneously, when armature a1 is in upper end position, the lower surface that armature a1 goes to the bottom with interior yoke a4 contacts, when armature a1 is in lower end position, and the upper surface of armature a1 and interior yoke a4 upper base；The longitudinal cross-section structural design of outer yoke a5 is to C shape, with the central shaft of whole magnetic circuit for axis of symmetry, when armature a1 is in upper end position, armature a1 contacts with the lower surface of outer yoke a5 upper base, when armature a1 is in lower end position, the upper surface that armature a1 and outer yoke a5 goes to the bottom；Coil a6 is wrapped on the coil rack a7 within interior yoke a4；Connecting rod a8 and armature a1 relative position are fixed, and end can connect main contacts, when armature a1 action, it is achieved the switching of signal。

Specific works process is as follows:

Armature a1 is in lower end initial position, the upper surface that armature a1 and outer yoke a5 goes to the bottom；Coil a6 is wrapped on the coil rack a7 within interior yoke a4；The magnetic circuit magnetic flux being now not added with electric current has a closed path: in armature a1 armature a1 upper base, the outer yoke a5 of the yoke a4 upper base permanent magnet a2 armature a1 that goes to the bottom goes to the bottom armature a1, under the effect of Guan Bi flux circuit, the suction between pole-face makes armature a1 be maintained at this position。

After coil a6 is energized, coil a6 produces the magnetic flux reverse with permanent magnet flux, permanent magnetism a2, a3 magnetic flux in armature a1 is weakened, until reducing to 0, now under the action of the spring, armature a1 action, move upward, until armature a1 upper base contacts with outer yoke a5 upper base, drivening rod a8 complete design function。

Armature a1 is in upper end position, and armature a1 contacts with the lower surface of outer yoke a5 upper base；Coil a6 is wrapped on the coil rack a7 within interior yoke a4；The magnetic circuit magnetic flux being now not added with electric current has a closed path: the armature a1 armature a1 interior yoke a4 that goes to the bottom goes to the bottom the outer yoke a5 upper base armature a1 upper base armature a1 of permanent magnet a2, under the effect of Guan Bi flux circuit, the suction between pole-face makes armature a1 be maintained at this position。

The present invention is applied in the example in relay, and as shown in Figure 5, Figure 6, on concrete structure, the magnetic Circuit Design with the present invention is corresponding, including armature b1, permanent magnet b2, b3, interior yoke b4, outer yoke b5, coil b6, coil rack b7, connecting rod b8 etc.。

In sum, provided by the invention a kind of can be applicable to the novel containing permanent magnetism double C-type yoke magnetic Circuit Design of the multiple electromagnetic systems such as relay, be suitably employed in the equipment such as direct drive type electro magnetic system such as relay, catalyst, chopper, electromagnetic valve, magnetic switch；Having full symmetric structure, part universality is strong, and assembling is simple；Two-way magnetic keeps, and it is adjustable that permanent magnet adjusts retentivity, coordinates different counter-force designs can obtain more flexible configuration mode；Product can be made to have good resistance to shock, and practical set is more efficient, with batch products coherence enhancing, and reduces the percent defective of batch products。

The above description of this invention is illustrative and not restrictive, and those skilled in the art is understood, and it can be carried out many amendments, change or equivalence, but they fall within protection scope of the present invention within the spirit and scope that claim limits。

Claims

1. one kind containing permanent magnetism double C-type yoke structure, it is characterised in that including:

Permanent magnet, fixes with described outer yoke sidewall and is connected, in order to produce magnetic attraction；Described permanent magnet is two, is fan ring-like, is symmetrically dispersed in armature both sides；

2. as claimed in claim 1 containing permanent magnetism double C-type yoke structure, it is characterised in that the material of described permanent magnet is the one in neodymium iron boron, aluminum nickel cobalt or ferrite。