CN102915870A - E-shaped mono-stability permanent magnet mechanism with closed magnetic circuit - Google Patents
E-shaped mono-stability permanent magnet mechanism with closed magnetic circuit Download PDFInfo
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- CN102915870A CN102915870A CN2012104501876A CN201210450187A CN102915870A CN 102915870 A CN102915870 A CN 102915870A CN 2012104501876 A CN2012104501876 A CN 2012104501876A CN 201210450187 A CN201210450187 A CN 201210450187A CN 102915870 A CN102915870 A CN 102915870A
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Abstract
The invention relates to a circuit breaker of a mono-stability permanent magnet mechanism, and particularly relates to an E-shaped mono-stability permanent magnet mechanism with a closed magnetic circuit. The mechanism is characterized in that an outer yoke (5), a bottom cover (10), a static iron core (12) and a magnetic isolation ring (11) define an E-shaped structure, wherein a magnetic field short circuit gas gap (7) is arranged between the lower end face of the static iron core (12) and the bottom cover (10); and an annular tile-shaped magnet (6) is mounted between the static iron core (12) and the outer yoke (5). The E-shaped mono-stability permanent magnet mechanism with the closed magnetic circuit, provided by the invention, has the beneficial effects that a permanent magnet of the E-shaped mono-stability permanent magnet mechanism has a closed magnetic circuit both in a switching-off state and a switching-on states so that the reliability of the mono-stability permanent magnet mechanism is improved; moreover, through adoption of a movable iron core positioning and guiding measure based on a special structure design, the size of the permanent magnet mechanism is reduced, and the permanent magnet mechanism is more convenient to use and maintain.
Description
Technical field
The present invention relates to the Monostable permanent magnetic mechanism vacuum circuit-breaker, especially a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit.
Background technology
Along with the development of permanent magnetic actuator vacuum circuit breaker in middle pressure field, and the day by day raising of permanent magnetism rare earth material and pure iron material property, permanent magnet mechanism more and more obtains people's concern.Monostable permanent magnetic mechanism of the present invention is a kind of of permanent magnet mechanism, and its groundwork principle is: Electromagnetic Drive, and permanent magnetism keeps; Concretely, exactly in carrying out the on/off switch operating process, the electric current of passing to different directions for the on/off switch coil produces the electromagnetic force of a different directions by the electric current of this different directions, drive moving iron core move up and down produce close, energy displacement output that separating brake needs.Combined floodgate puts in place and need not the mechanical lock buckle device, utilizes permanent magnet that permanent magnetic is provided fully, with moving stable being pull-in on the static iron core ad-hoc location of iron core, thereby keeps reliably the vacuum circuit-breaker "on" position.
In the E shape structure that traditional Monostable permanent magnetic mechanism adopts, its permanent magnet magnetic circuit when permanent magnet mechanism is in gate-dividing state is opened a way fully, and the location of moving iron core and guiding be to utilize output shaft to extend permanent magnet mechanism top cover and bottom, relies on that location hole in the middle of the bottom of top realizes.The consequence of doing like this is: permanent magnet mechanism under gate-dividing state because magnetic circuit open circuit, being in is a kind of unsure state, be subject to easily the impact of extraneous factor and malfunction, simultaneously because the Functional Design of location and guiding, cause the permanent magnet mechanism complex structure, volume increases, so that the vacuum circuit breaker mechanism case is safeguarded narrow space, causes inconvenience.
Summary of the invention
The purpose of this invention is to provide a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit, thereby the permanent magnet that can realize E shape Monostable permanent magnetic mechanism minute, all have closed magnetic circuit under the "on" position and keep stable state, dwindled simultaneously the volume of permanent magnet mechanism.
A kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit, comprise output shaft, be respectively installed with moving iron core, static iron core, magnetic field shading ring and bottom at this output shaft, wherein in moving iron core, coil rack is installed, at coil rack the divide-shut brake coil is installed, between moving iron core and bottom outer yoke is installed also in addition, its special feature is: described outer yoke, bottom, static iron core and magnetic field shading ring consist of E shape structure; Between static iron core lower surface and bottom, be provided with magnetic field short circuit air gap, and watt type magnet of ring-type is installed between static iron core and outer yoke, thereby can form closed magnetic circuit by above-mentioned magnetic field short circuit air gap.
Wherein an end of output shaft and moving iron core are threaded connection the location, and its other end passes from upper self-lubricating guide sleeve, static iron core, lower self-lubricating guide sleeve and extend out to the bottom outside.
Wherein the coil rack material is polytetrafluoroethylene, and this coil rack and moving iron core middle part are slidingly connected, thereby location and guide effect are played in the motion of moving iron core.
Wherein be set with locating cover at the divide-shut brake coil, this locating cover lower end is the L-type structure, thereby cooperates to the divide-shut brake coil location with outer yoke inner chamber step lower end.
Wherein watt type magnet is positioned at the enclosure space that magnetic field shading ring, outer yoke, static iron core, divide-shut brake coil, locating cover and coil rack form.
Wherein watt type magnet is rare-earth Nd-Fe-B magnet.
The invention has the beneficial effects as follows: a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit is provided, the permanent magnet of realizing E shape Monostable permanent magnetic mechanism minute, all have closed magnetic circuit under the "on" position, improve the reliability of Monostable permanent magnetic mechanism, adopt simultaneously moving iron core location and the guiding measure of special construction design, dwindled the volume of permanent magnet mechanism, safeguarded, used convenient.
Description of drawings
Accompanying drawing 1 is mechanism of the present invention "on" position schematic diagram;
Accompanying drawing 2 is mechanism of the present invention gate-dividing state schematic diagram.
Embodiment
As shown in Figure 1, 2, the present invention is a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit, comprise output shaft 8, be respectively installed with moving iron core 1, static iron core 12, magnetic field shading ring 11 and bottom 10 at this output shaft 8, wherein in moving iron core 1, coil rack 13 is installed, at coil rack 13 divide-shut brake coil 3 is installed, between moving iron core 1 and bottom 10 outer yoke 5 is installed also in addition, described outer yoke 5, bottom 10, static iron core 12 and magnetic field shading ring 11 consist of E shape structure; Between static iron core 12 lower surfaces and bottom 10, be provided with magnetic field short circuit air gap 7, and watt type magnet 6 of ring-type is installed between static iron core 12 and outer yoke 5, thereby can form closed magnetic circuit by above-mentioned magnetic field short circuit air gap 7.
Wherein an end of output shaft 8 and moving iron core 1 are threaded connection the location, and its other end passes from upper self-lubricating guide sleeve 4, static iron core 12, lower self-lubricating guide sleeve 9 and extend out to bottom 10 outsides.Coil rack 13 materials are polytetrafluoroethylene, and this coil rack 13 is slidingly connected (being both matched in clearance) with moving iron core 1 middle part, thereby location and guide effect are played in the motion of moving iron core 1.Be set with locating cover 2 at divide-shut brake coil 3, these locating cover 2 lower ends are the L-type structure, thereby cooperate to divide-shut brake coil 3 location with outer yoke 5 inner chamber step lower ends.
Watt type magnet 6 is positioned at the enclosure space of magnetic field shading ring 11, outer yoke 5, static iron core 12, divide-shut brake coil 3 and locating cover 2, coil rack 13 compositions in addition, and watt type magnet 6 adopts the rare-earth Nd-Fe-B magnet.
Operation principle of the present invention is as follows:
The present invention is a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit, by the E shape structure that outer yoke 5, bottom 10, static iron core 12 and magnetic field shading ring 11 form, under the adaptive directed effect of output shaft 8, do relative up or down motion with this as the moving iron core 1 of E shape structure; And be designed with magnetic field short circuit air gap 7 between static iron core 12 lower surfaces and bottom 10, under above-mentioned moving iron core 1 makes progress running status relatively (permanent magnet mechanism gate-dividing state), watt type magnet 6 can form closed magnetic circuit by magnetic field short circuit air gap 7;
As shown in Figure 1 and Figure 2, above-mentioned moving iron core 1 moves upward distance relatively above after the vacuum circuit-breaker compression travel, the magnetic resistance of described short circuit air gap 7 is more and more less than the magnetic resistance of 5 of moving iron core 1 and static iron core 12, outer yokes, so that the approximate short circuit in watt type magnet 6 magnetic fields, not only weakened the magnetic field force of 5 of moving iron core 1 and static iron core 12, outer yokes, make the electromagnetic force of divide-shut brake coil 3 accelerate to move upward in moving iron core 1, effectively promoted opening velocity, and can guarantee that watt type magnet 6 is in separating brake stable state at present at permanent magnet mechanism.
Claims (6)
1. E shape Monostable permanent magnetic mechanism with closed magnetic circuit, comprise output shaft (8), be respectively installed with moving iron core (1) at this output shaft (8), static iron core (12), magnetic field shading ring (11) and bottom (10), coil rack (13) wherein is installed in moving iron core (1), at coil rack (13) divide-shut brake coil (3) is installed, between moving iron core (1) and bottom (10), outer yoke (5) is installed also in addition, it is characterized in that: described outer yoke (5), bottom (10), static iron core (12) and magnetic field shading ring (11) consist of E shape structure; Between static iron core (12) lower surface and bottom (10), be provided with magnetic field short circuit air gap (7), and watt type magnet (6) of ring-type is installed, thereby can form closed magnetic circuit by above-mentioned magnetic field short circuit air gap (7) between static iron core (12) and outer yoke (5).
2. a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit as claimed in claim 1, it is characterized in that: wherein an end of output shaft (8) and moving iron core (1) are threaded connection the location, and its other end passes from upper self-lubricating guide sleeve (4), static iron core (12), lower self-lubricating guide sleeve (9) and extend out to bottom (10) outside.
3. a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit as claimed in claim 1, it is characterized in that: wherein coil rack (13) material is polytetrafluoroethylene, this coil rack (13) is slidingly connected with moving iron core (1) middle part, thereby location and guide effect are played in the motion of moving iron core (1).
4. a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit as claimed in claim 1, it is characterized in that: wherein be set with locating cover (2) at divide-shut brake coil (3), this locating cover (2) lower end is the L-type structure, thereby cooperates in order to divide-shut brake coil (3) is located with outer yoke (5) inner chamber step lower end.
5. a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit as claimed in claim 1 is characterized in that: wherein watt type magnet (6) is positioned at the enclosure space that magnetic field shading ring (11), outer yoke (5), static iron core (12), divide-shut brake coil (3), locating cover (2) and coil rack (13) form.
6. a kind of E shape Monostable permanent magnetic mechanism with closed magnetic circuit as claimed in claim 1, it is characterized in that: wherein watt type magnet (6) is rare-earth Nd-Fe-B magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210450187.6A CN102915870B (en) | 2012-11-13 | 2012-11-13 | E-shaped mono-stability permanent magnet mechanism with closed magnetic circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210450187.6A CN102915870B (en) | 2012-11-13 | 2012-11-13 | E-shaped mono-stability permanent magnet mechanism with closed magnetic circuit |
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| CN102915870A true CN102915870A (en) | 2013-02-06 |
| CN102915870B CN102915870B (en) | 2014-11-26 |
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| CN201210450187.6A Active CN102915870B (en) | 2012-11-13 | 2012-11-13 | E-shaped mono-stability permanent magnet mechanism with closed magnetic circuit |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0422037A (en) * | 1990-05-15 | 1992-01-27 | Mitsubishi Electric Corp | Electromagnetic switch device |
| RU2020631C1 (en) * | 1992-04-02 | 1994-09-30 | Малое внедренческое предприятие "Таврида Электрик" | Tel modular series vacuum circuit breaker |
| EP1225609A2 (en) * | 2001-01-18 | 2002-07-24 | Hitachi, Ltd. | Electromagnet and actuating mechanism for switch device |
| US20060279386A1 (en) * | 2003-05-09 | 2006-12-14 | Lammers Arend J W | Electromagnetic actuator |
| CN2879399Y (en) * | 2005-12-22 | 2007-03-14 | 浙江日升电器有限公司 | Permanent-magnetic operating mechanism for high-voltage grade vacuum switch |
| EP1618577B1 (en) * | 2003-03-26 | 2009-03-25 | Tavrida Electric Industrial Group | Vacuum circuit breaker |
| CN201383467Y (en) * | 2009-02-19 | 2010-01-13 | 陕西中恒电气有限公司 | Monostable and monocoil permanent magnetic mechanism |
| CN202473787U (en) * | 2011-12-23 | 2012-10-03 | 河南瑞特电气有限公司 | Novel permanent-magnet driving device |
| CN202940181U (en) * | 2012-11-13 | 2013-05-15 | 宁夏力成电气集团有限公司 | E-shaped monostable permanent magnetic mechanism with closed magnetic circuit |
-
2012
- 2012-11-13 CN CN201210450187.6A patent/CN102915870B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0422037A (en) * | 1990-05-15 | 1992-01-27 | Mitsubishi Electric Corp | Electromagnetic switch device |
| RU2020631C1 (en) * | 1992-04-02 | 1994-09-30 | Малое внедренческое предприятие "Таврида Электрик" | Tel modular series vacuum circuit breaker |
| EP1225609A2 (en) * | 2001-01-18 | 2002-07-24 | Hitachi, Ltd. | Electromagnet and actuating mechanism for switch device |
| EP1618577B1 (en) * | 2003-03-26 | 2009-03-25 | Tavrida Electric Industrial Group | Vacuum circuit breaker |
| US20060279386A1 (en) * | 2003-05-09 | 2006-12-14 | Lammers Arend J W | Electromagnetic actuator |
| CN2879399Y (en) * | 2005-12-22 | 2007-03-14 | 浙江日升电器有限公司 | Permanent-magnetic operating mechanism for high-voltage grade vacuum switch |
| CN201383467Y (en) * | 2009-02-19 | 2010-01-13 | 陕西中恒电气有限公司 | Monostable and monocoil permanent magnetic mechanism |
| CN202473787U (en) * | 2011-12-23 | 2012-10-03 | 河南瑞特电气有限公司 | Novel permanent-magnet driving device |
| CN202940181U (en) * | 2012-11-13 | 2013-05-15 | 宁夏力成电气集团有限公司 | E-shaped monostable permanent magnetic mechanism with closed magnetic circuit |
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| CN102915870B (en) | 2014-11-26 |
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Denomination of invention: An E-shape monostable permanent magnet mechanism with closed magnetic circuit Effective date of registration: 20201231 Granted publication date: 20141126 Pledgee: China Construction Bank Corporation Yinchuan Xixia sub branch Pledgor: NINGXIA LICHENG GROUP Co.,Ltd. Registration number: Y2020640000006 |
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