CN101728052A - Release electromagnet device - Google Patents
Release electromagnet device Download PDFInfo
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- CN101728052A CN101728052A CN200910003081A CN200910003081A CN101728052A CN 101728052 A CN101728052 A CN 101728052A CN 200910003081 A CN200910003081 A CN 200910003081A CN 200910003081 A CN200910003081 A CN 200910003081A CN 101728052 A CN101728052 A CN 101728052A
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- yoke
- iron core
- determination
- hole
- unshakable
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Abstract
The present invention provides a release electromagnet device which can stabilize the magnetic resistance between an iron core and an end magnet yoke and has stable release characteristic. The release electromagnet device of the invention is provided with an iron core which is configured to a state that: when the iron core abuts against a transferring magnet yoke, the iron core is kept to the abutting position based on the absorbing force of a permanent magnet; when the electromagnet coil is energized, the absorbing force is reduced, the iron core releases in a direction separated from the transferring magnet yoke based on a prestressing force of a release spring for moving. The iron core is provided with an iron core guiding part which guarantees a magnet gap between the iron core and an inner peripheral surface of the end magnet yoke, which forms a through hole. Simultaneously the iron core guiding part is used as a sliding bearing which slides on the inner peripheral surface of the end magnet yoke.
Description
Technical field
The present invention relates to a kind of release electromagnet device that is used for the tripgear of Inturruptor for sub-line, residual current circuit breaker etc.
Background technology
As everyone knows, distribution constitutes with circuit breakers such as circuit-breaker or residual current circuit breaker (hereinafter referred to as " circuit-breaker "), in the circuit that this circuit-breaker connected, be short-circuited or during electric leakage etc., the trip signal that produces based on detecting this situation, tripping mechanism trips automatically, disconnects described circuit.The foregoing circuit circuit breaker has release electromagnet device, this release electromagnet device has the solenoid that is energized based on trip signal and is released when this solenoid energising and the iron core that moves, moving of the iron core of foregoing circuit circuit breaker by this release electromagnet device makes the tripping mechanism tripping operation and open circuit.
Current, as the release electromagnet device that in circuit-breaker, uses, following technology has been proposed, this release electromagnet device constitutes, have the guide portion of making by nonmagnetic substance unshakable in one's determination in the through hole inboard that is opened on the yoke of end, slidably channeling conduct unshakable in one's determination is supported as sliding bearing, reduce the deviation of the magnetic resistance that causes by the sorption between the through hole of iron core and end yoke with this iron core guide portion, guarantee stable release characteristics (for example, with reference to patent documentation 1).
Patent documentation 1: the spy opens the 2005-166429 communique
Summary of the invention
Under the situation of the existing release electromagnet device shown in the patent documentation 1, guide portion unshakable in one's determination need be fixed in the through hole of end yoke.As the fixing means of guide portion unshakable in one's determination welding or bonding etc. is arranged, but in the said fixing method, there is following problems, promptly, sometimes the sidewall of the through hole of guide portion unshakable in one's determination deflection end yoke is fixed, because action eccentric shaft unshakable in one's determination, magnetic resistance produces deviation, so the release characteristics instability of release electromagnet device.
The present invention proposes in order to solve the foregoing problems in the existing release electromagnet device, and its purpose is to provide a kind of stable, stable release electromagnet device of release characteristics of magnetic resistance that can make between iron core and end yoke.
Release electromagnet device involved in the present invention has: solenoid, and it is wound on central portion has on the outer peripheral face of bobbin of through hole; Main yoke, it is made of magnetic material, has peristome in an axial end, accommodates described solenoid and described bobbin in inside; Permanent magnet, it is fixed on the inwall of axial the other end of described main yoke; Transmit yoke, it is arranged between the axial end of described permanent magnet and described bobbin; The end yoke, the peristome that it is fixed on described main yoke has the through hole that links with the through hole of described bobbin; Core part, it has iron core, and this iron core is made of magnetic material, is inserted in the through hole of the through hole of described bobbin and described end yoke; And retracting spring, its with described core part all the time to the direction pretension that separates with described transmission yoke, described core part constitutes, when described iron core and described transmission yoke butt, based on the sorptive force of described permanent magnet and remain on the position of this butt, when described solenoid is switched on, described sorptive force reduces, discharge and move to the direction of separating based on the pretightning force of described retracting spring with described transmission yoke, described core part has guide portion unshakable in one's determination, it guarantees the magnetic gap between the inner peripheral surface of formation through hole of described iron core and described end yoke, simultaneously as the sliding bearing that slides on the inner peripheral surface of described end yoke.
The effect of invention
Release electromagnet device involved in the present invention, because have guide portion unshakable in one's determination in core part, this iron core guide portion is used to guarantee the magnetic gap between the inner peripheral surface of formation through hole of iron core and end yoke, conduct is at the sliding bearing of the enterprising line slip of inner peripheral surface of end yoke simultaneously, so the offset of the action axle of core part is reduced, reduce the deviation of the magnetic resistance between unshakable in one's determination and the end yoke, thereby can guarantee stable release characteristics.
Description of drawings
Fig. 1 is the profile of the related release electromagnet device of embodiments of the present invention 1.
Fig. 2 is the structure chart of the core part of the release electromagnet device in the embodiments of the present invention 1.
Embodiment
Execution mode 1
Fig. 1 is the profile of the release electromagnet device in the embodiments of the present invention 1,
Fig. 2 is the structure chart of the core part of the release electromagnet device in the embodiments of the present invention 1.In Fig. 1, the bobbin 2 that central portion has through hole 21 is made of nonmagnetic substance, forms flange part 22,23 on its axial both ends respectively.Solenoid 3 is wound on the peripheral part by the bobbin 2 of flange part 22,23 clampings.
The cylindric main yoke 4 that is made of magnetic material forms section U font, has peristome 41 (in the following description, claiming that main yoke 4 is " a U font yoke ") in its axial end.Solenoid 3 and bobbin 2 are housed in the inner space portion of U font yoke 4 in its axle center mode consistent with the axle center of yoke 4.
The end yoke 5 that is made of magnetic material is entrenched on the peristome 41 of U font yoke 4, with the axial end portion butt of bobbin 2.End yoke 5 is fixed on the U font yoke 4 by methods such as riveted joints.End yoke 5 portion's formation in the central has the cylindrical portion 51 of through hole 5a.For the through hole 5a of cylindrical portion 51, its axle center is positioned on the extended line in axle center of through hole 21 of bobbin 2, and links with the through hole 21 of bobbin 2.
Below, the structure of core part 6 is described.In Fig. 1 and Fig. 2, core part 6 has the 6a cylindric unshakable in one's determination that is made of magnetic material.This iron core 6a has large-diameter portion 6a1, the middle footpath 6a2 of portion and minor diameter part 6a3.The cylindrical core guide portion 6b that is made of nonmagnetic substance has end edge portion 6b1, and it forms by the axial end lateral buckling in radial direction that makes guide portion 6b unshakable in one's determination.
The outer peripheral face of the middle footpath 6a2 of portion of guide portion 6b unshakable in one's determination and 6a unshakable in one's determination is chimeric, the end face butt of the middle footpath 6a2 of portion of the inwall of its end edge portion 6b1 and 6a unshakable in one's determination.The external diameter of guide portion 6b unshakable in one's determination form with the external diameter of the large-diameter portion 6a1 of 6a unshakable in one's determination about equally, and be set at the internal diameter of the cylindrical portion 51 that is slightly less than end yoke 5.Guide portion 6b unshakable in one's determination guarantees the magnetic gap between the inner peripheral surface of cylindrical portion 51 of 6a unshakable in one's determination and end yoke 5.
Plate-like portion 6c can be installed on the minor diameter part 6a3 of 6a unshakable in one's determination vertically movably, by stoping its moving to the drawing top with retainer ring 6e butt.By the plate-like portion spring 6d that constitutes of compression spring with compressed state configuration between the end edge portion 6b1 of plate-like portion 6c and guide portion 6b unshakable in one's determination, with guide portion 6b unshakable in one's determination and plate-like portion 6c to the direction pretension that leaves mutually.Guide portion 6b unshakable in one's determination is fixed on the 6a unshakable in one's determination by pushing its end edge portion 6b1 by plate-like portion spring 6d.
The 6a unshakable in one's determination of the core part 6 of formation as noted above is inserted in the through hole 5a of the through hole 21 of bobbin 2 and end yoke 5 as shown in Figure 1.Under this state, guide portion 6b unshakable in one's determination is positioned at the through hole 5a of end yoke 5, and the outer peripheral face by guide portion 6b unshakable in one's determination slides on the inner peripheral surface of the cylindrical portion 51 of end yoke 5 and moves as the sliding bearing of core part 6.
In Fig. 1, be on the bottom by the inwall of fixed head 8 located and fixed in axial the other end of U font yoke 4 along the magnetized permanent magnet 7 of thickness direction.The transmission yoke (transfer-yoke) 9 that is made of magnetic material is arranged between the end face of permanent magnet 7 and bobbin 2, and is relative with the end face of 6a unshakable in one's determination.6a unshakable in one's determination constitutes, and sorption is being transmitted on the yoke 9 by the magnetic attraction of permanent magnet 7.
The retracting spring 10 that is made of the compression spring is set to an end and end yoke 5 butts, the plate-like portion 6c butt of the other end and core part 6.State representation shown in Figure 1 6a unshakable in one's determination is the state of sorption on transmission yoke 9 by the magnetic force of permanent magnet 7.Under this state, retracting spring 10 is in compressed state, with core part 6 to leaving the direction pretension that transmits yoke 9, but because sorptive force under the state of 6a unshakable in one's determination and transmission yoke 9 butts between the two is set to the pretightning force greater than 10 pairs of core part 6 of retracting spring, so core part 6 remains on and transmits on the position of yoke 9 butts.
Below, the action of the release electromagnet device that the embodiments of the present invention 1 of formation as noted above are related is described.If by the reset operation of circuit-breaker (not shown) core part 6 is pressed into to reset position shown in Figure 1, then sorption keeps in the position shown in the figure 1 transmitting on the yoke 9 core part 6 by the magnetic force Fm of permanent magnet 7.Under this state, the magnetic flux φ m of permanent magnet 7 is back to the S utmost point from the N utmost point of permanent magnet 7 via transmission yoke 9,6a unshakable in one's determination, end yoke 5, U font yoke 4.If the elastic force of retracting spring 10 note is made Fs, then make core part 6 with the power of " Fm-Fs " sorption transmitting on the yoke 9.
Under state shown in Figure 1, if the trip signal based on circuit-breaker makes release current flow through solenoid 3, then the magnetic flux φ i that produces of solenoid 3 offsets the confining force Fm of permanent magnet 7 to transmit yoke 9, U font yoke 4, end yoke 5, the such path flow of 6a unshakable in one's determination, and the confining force Fm of permanent magnet 7 is reduced.Thus, the elastic force Fs of retracting spring 10 surpasses the confining force Fm of permanent magnet 7, make with as the incorporate core part 6 of the guide portion 6b unshakable in one's determination of sliding bearing from the state that transmits yoke 9 sorptions discharge, outstanding to the drawing top.
If core part 6 is given prominence to by the pretightning force of retracting spring 10, then the tripping mechanism of circuit-breaker (not shown) is triggered by core part 6, makes travelling contact separate open circuit with fixed contact.
After core part 6 is given prominence to by the pretightning force of retracting spring 10, if for circuit-breaker being connected and tripping mechanism being resetted, then in this homing action process, the actuator (not shown) that is arranged on the circuit-breaker is pushed the plate-like portion 6c of core part 6, and sorption is being transmitted on the yoke 9 to Fig. 1 below is mobile to make core part 6.Thus, release electromagnet device 1 resets.Because plate-like portion 6c can 6a unshakable in one's determination axially on action, so when the homing action of the actuator of circuit-breaker, can prevent that actuator exceedingly is pressed into plate-like portion 6c and destroys plate-like portion 6c.
Under the situation of described existing apparatus, utilize bonding or welding and when making guide portion 6b unshakable in one's determination be fixed on the end yoke 5 in modes such as welding, exist owing to action eccentric shaft unshakable in one's determination, magnetic resistance produce deviation, and make the release characteristics problem of unstable of release electromagnet device, but 1 related release electromagnet device according to the embodiment of the present invention, because guide portion 6b unshakable in one's determination is fixed on the 6a unshakable in one's determination, so can not make the action eccentric shaft of 6a unshakable in one's determination, can eliminate the magnetic resistance deviation thus, guarantee stable release characteristics.And, because fixedly being undertaken of guide portion 6b unshakable in one's determination by utilizing plate-like portion spring 6d that guide portion 6b unshakable in one's determination is pushed to 6a unshakable in one's determination, just can fixed iron core guide portion 6b so do not need to append parts, assembling is easily.
Claims (3)
1. release electromagnet device, it has:
Solenoid, it is wound on central portion has on the outer peripheral face of bobbin of through hole; Main yoke, it is made of magnetic material, has peristome in an axial end, accommodates described solenoid and described bobbin in inside; Permanent magnet, it is fixed on the inwall of axial the other end of described main yoke; Transmit yoke, it is arranged between the axial end of described permanent magnet and described bobbin; The end yoke, the peristome that it is fixed on described main yoke has the through hole that links with the through hole of described bobbin; Core part, it has iron core, and this iron core is made of magnetic material, is inserted in the through hole of the through hole of described bobbin and described end yoke; And retracting spring, its with described core part all the time to the direction pretension that separates with described transmission yoke,
Described core part constitutes, when described iron core and described transmission yoke butt, based on the sorptive force of described permanent magnet and remain on the position of this butt, when described solenoid is switched on, described sorptive force reduces, discharge and move to the direction of separating based on the pretightning force of described retracting spring with described transmission yoke
This release electromagnet device is characterised in that,
Described core part has guide portion unshakable in one's determination, and it guarantees the magnetic gap between the inner peripheral surface of formation through hole of described iron core and described end yoke, simultaneously as the sliding bearing that slides on the inner peripheral surface of described end yoke.
2. release electromagnet device according to claim 1 is characterized in that,
Described core part has: plate-like portion, and it keeps described retracting spring; And the plate-like portion spring, it is arranged between described plate-like portion and the described guide portion unshakable in one's determination, all the time described guide portion unshakable in one's determination is pushed to described iron core.
3. release electromagnet device according to claim 2 is characterized in that,
Described plate-like portion is set to and can moves on the direction of the described plate-like portion spring of compression.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-278411 | 2008-10-29 | ||
| JP2008278411A JP5248982B2 (en) | 2008-10-29 | 2008-10-29 | Release-type electromagnet device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101728052A true CN101728052A (en) | 2010-06-09 |
| CN101728052B CN101728052B (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910003081XA Active CN101728052B (en) | 2008-10-29 | 2009-01-19 | Release electromagnet device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5248982B2 (en) |
| CN (1) | CN101728052B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632898A (en) * | 2012-08-22 | 2014-03-12 | 西门子公司 | Electromagnetic trip and residual current operated circuit breaker adopting the same |
| CN104347225A (en) * | 2013-08-05 | 2015-02-11 | 宝鸡烽火工模具技术有限公司 | Electromagnet capable of preventing permanent attraction and clamping stagnation |
| CN104979143A (en) * | 2014-04-03 | 2015-10-14 | 三菱电机株式会社 | Release-type electromagnet device and production method therefor |
| CN107654565A (en) * | 2016-07-26 | 2018-02-02 | 哈金森公司 | Hydraulic shock-absorbing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012128758A1 (en) * | 2011-03-22 | 2012-09-27 | Otis Elevator Company | Elevator braking system |
| CN105666522B (en) * | 2016-04-15 | 2017-08-15 | 上海交通大学 | The translation joint of electromagnetic type stiffness variable |
| CN114251558B (en) * | 2021-12-23 | 2024-04-16 | 宁波视睿迪光电有限公司 | Mounting and display device |
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| JPS5555679U (en) * | 1978-10-05 | 1980-04-15 | ||
| JPS59107380U (en) * | 1983-01-08 | 1984-07-19 | リンナイ株式会社 | proportional valve device |
| JPS61119309U (en) * | 1985-01-14 | 1986-07-28 | ||
| JPH01262604A (en) * | 1988-04-14 | 1989-10-19 | Matsushita Electric Ind Co Ltd | Electromagnetic actuator |
| JP2589561B2 (en) * | 1988-12-02 | 1997-03-12 | 三明電機株式会社 | Moving iron core in tube type electromagnet |
| JPH0744120B2 (en) * | 1989-08-18 | 1995-05-15 | シーケーディコントロールズ株式会社 | Manufacturing method of plunger guide for solenoid |
| US6853279B1 (en) * | 2003-08-01 | 2005-02-08 | Eaton Corporation | Circuit breaker trip unit including a plunger resetting a trip actuator mechanism and a trip bar |
| JP4277667B2 (en) * | 2003-12-02 | 2009-06-10 | 富士電機機器制御株式会社 | Release electromagnetic solenoid |
| JP4277719B2 (en) * | 2004-03-18 | 2009-06-10 | 富士電機機器制御株式会社 | Release electromagnetic solenoid |
| CN2754189Y (en) * | 2004-07-15 | 2006-01-25 | 上海精益电器厂有限公司 | Solenoid electromagnet |
| JP2007234250A (en) * | 2006-02-27 | 2007-09-13 | Fuji Electric Fa Components & Systems Co Ltd | Breaker tripping device |
| KR100852300B1 (en) * | 2006-02-27 | 2008-08-14 | 후지 덴키 기기세이교 가부시끼가이샤 | Electromagnetic release |
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2008
- 2008-10-29 JP JP2008278411A patent/JP5248982B2/en active Active
-
2009
- 2009-01-19 CN CN200910003081XA patent/CN101728052B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632898A (en) * | 2012-08-22 | 2014-03-12 | 西门子公司 | Electromagnetic trip and residual current operated circuit breaker adopting the same |
| CN103632898B (en) * | 2012-08-22 | 2016-06-29 | 西门子公司 | Magnetictrip and apply the residual current action breaker of this electrical apparatus release |
| CN104347225A (en) * | 2013-08-05 | 2015-02-11 | 宝鸡烽火工模具技术有限公司 | Electromagnet capable of preventing permanent attraction and clamping stagnation |
| CN104979143A (en) * | 2014-04-03 | 2015-10-14 | 三菱电机株式会社 | Release-type electromagnet device and production method therefor |
| CN104979143B (en) * | 2014-04-03 | 2018-08-24 | 三菱电机株式会社 | Release electromagnet device and its manufacturing method |
| CN107654565A (en) * | 2016-07-26 | 2018-02-02 | 哈金森公司 | Hydraulic shock-absorbing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5248982B2 (en) | 2013-07-31 |
| CN101728052B (en) | 2012-11-28 |
| JP2010109074A (en) | 2010-05-13 |
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