EP0885450A1 - Electromagnetic switching device - Google Patents
Electromagnetic switching deviceInfo
- Publication number
- EP0885450A1 EP0885450A1 EP97915302A EP97915302A EP0885450A1 EP 0885450 A1 EP0885450 A1 EP 0885450A1 EP 97915302 A EP97915302 A EP 97915302A EP 97915302 A EP97915302 A EP 97915302A EP 0885450 A1 EP0885450 A1 EP 0885450A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- plunger core
- core part
- inner yoke
- yoke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
- H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
- H01F7/1623—Armatures having T-form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/22—Polarised relays
- H01H51/2209—Polarised relays with rectilinearly movable armature
Definitions
- the invention relates to an electromagnetic
- Switching device in which an armature in an electromagnetic block is provided with an armature plate at one end of a plunger core part, a winding is wound around a coil former, in the axial opening of which the plunger core part of the armature is inserted axially displaceably, around an inner yoke the winding is arranged around and faces the outer surface of the armature plate of the armature, an outer yoke is arranged such that it faces the inner yoke with a permanent magnet interposed between them and that it faces a part of the inner yoke , which lies opposite the armature plate in order to limit its displacement, and movable contacts of a contact block are caused by a coupling device by means of displacement of the armature to make or interrupt contact with stationary contacts.
- the generic switching device is known from DE 39 08 319 AI.
- the outer yoke is U-shaped. It is opposite the other end of the plunger part so that it is perpendicular and adjacent to it.
- a magnetic cylinder is inserted in the axially extending opening of the coil body, this design results in reduced attractive forces during the winding deenergization. At the same time, the attractive forces for winding excitation are increased with the nominal current, making it highly efficient
- an electromagnetic switching device with an electromagnetic block is known from US Pat. No. 4,509,026.
- the electromagnetic block here comprises an armature which has a plunger core and two armature plates which are fastened to the two ends of the plunger core.
- the electromagnetic block also includes a winding wound around the plunger core of the armature, inner yokes which are arranged on the circumference of the winding and between the two armature plates, and outer yokes which are arranged outside the inner yokes. Permanent magnets are inserted between the inner and outer yokes.
- the core is moved here between a forward and a backward position, being held back by the inner and outer yokes when the winding is energized and de-energized and a contactor is thereby actuated to make or break contact.
- the magnetic flux of the permanent magnet superimposes the flux of the winding either positively or negatively. With this arrangement, however, there must always be intermediate spaces or permanent magnets in the magnetic flux of the winding.
- the invention has for its object to provide an electrical switching device of the above type with a magnet system, in particular a direct current magnet system with permanent magnet support, which operates several NC and NO contacts efficiently with low power loss and low space requirements.
- the object is inventively achieved in that formed in ⁇ nere yoke additionally such that it is opposed to such the ande ren end of the plunger core part that vertically and lies adjacent to the latter, and in that a magne ⁇ diagrammatic cylinder having an axial Has a length which is sufficiently greater than the wall thickness of the yoke on its part, which faces this other end of the plunger core part, into the axially extending opening of the coil body. pers, surrounding the other of the plunger part, is inserted so that it lies at the level of that part of the inner yoke which faces the outer end of the plunger part.
- the axial length of the magnetic cylinder is sufficiently greater than the wall thickness of the yoke at its part which faces this other end of the plunger core part makes a sufficient magnetic conductance for transferring the magnetic lines of force between the yoke and the plunger core part guaranteed.
- the expression "sufficiently large” includes the requirement for a sufficient magnetic conductance and is not to be understood as a minimum ratio between the axial length of the magnetic cylinder and the wall thickness of the yoke, since this ratio also depends on the width of the yoke.
- DE-AS 1 140 622 discloses a plunger core with a cavity for receiving a return spring.
- FIG. 1 shows a perspective view of the electromagnetic block according to the present invention in the assembled state
- 2 shows a vertical section through the electromagnetic block according to FIG. 1 in the OFF position
- 3 shows a perspective view of the electromagnetic block according to the invention after installation in a magnetic chamber
- FIG. 4 shows a perspective exploded view of the electromagnetic block with a lower housing part; 5 shows a vertical section through the electromagnetic block according to FIG. 1 in the ON position.
- the electromagnetic block 1 comprises a coil winding body 3 with an upper 4 facing the contact block and a lower flange 5 facing away from it.
- a winding 6 is wound around the coil winding body 3.
- the coil winding body 3 has an axial opening 7 and is part of a coil former 8 to which the connections for the winding 6 are attached.
- a plunger core part 9 of an armature 10 is slidably inserted in the axial opening 7.
- the lower plunger core end facing the bottom of the lower housing part 2 has a cylindrical recess 13 for receiving an impression spring, not shown, which on the other hand is supported on the lower housing part 2 and keeps the contacts of the contact block in the de-energized state of the electromagnetic block 1 in the OFF state.
- a U-shaped yoke half 14 of an inner yoke 15 arranged on opposite sides of the winding 6 and closely adjacent to each other. Both yoke halves 14 are formed from a plate-shaped central part 16, at the ends of which legs 17, 18 continue at right angles.
- the central parts 16 run parallel to the plunger core part 9 between the flanges 4, 5, while the upper legs 17 facing the contact block on the outer surface of the upper flange 4 are oriented perpendicular to the plunger core part 9 abut and extend almost to the cylindrical coil winding body 3 with the axial opening 7.
- a magnetic cylinder on the side facing the bottom of the lower housing part 2, here designed as a bushing 19, which lies at a slight distance around the plunger core part 9 and has a projection which extends over the lower flange 5 and which the lower flange 5 has Grip leg 18 of the inner yoke halves 14 in a form-fitting manner.
- the upper legs 17 are closer to the winding 6 than the armature plate 11.
- the upper flange 4 projects over the outer surfaces of the upper legs 17 and represents a stop 20 for the armature plate 11, through which, when the armature 10 is tightened, a small gap is ensured.
- An outer yoke 21 is arranged on the outside around the inner yoke 15, two plate-shaped permanent magnets 26 being pushed between them in such a way that they run along the central parts 16.
- the outer yoke is formed from two L-shaped yoke halves 22, each with a main plate part 23 and a leg part 24 angled at right angles.
- the main plate parts 23 are aligned parallel to the plunger core part 9 of the armature 10.
- the mutually facing leg parts 24 form an opening which is used to carry out a coupling part 29 fastened to the armature 10 for actuating the contact block. They lie parallel to the upper legs 17 of the inner yoke 15, with the space between both the anchor plate 11 is arranged.
- An anti-adhesive plate 25 is fastened to the inner surfaces of the leg parts 24 and has a square cutout for connecting the coupling part 29 to the anchor 10 and its passage.
- the inner yoke 15 according to FIG. 3 or the outer yoke 21 according to FIG. 2 is provided with projections 27 and 28, respectively.
- the armature plate 11 of the armature 10 lies against the leg regions 24 of the outer yoke 21, the anti-adhesive plate 25 ensuring the required distance, which prevents "sticking" to the outer yoke 21.
- the armature 10 is held by two magnetic circles (see FIG. 2), which are formed by the plunger core part 9, the armature plate 10, the outer yoke 21, the two permanent magnets 26, the inner yoke 15 and the Socket 19 are closed in the order mentioned.
- the armature 10 When the winding 6 is excited, the armature 10 is attracted in the direction of the bottom part of the housing, with the armature plate 11 approaching the upper legs 17 of the inner yoke 15 and the magnetic resistance of the magnetic circuits, via which the magnetic River forms, decreases and is accompanied by an increase in the force acting on the anchor 10.
- An impression spring inserted at the lower plunger end 9 is compressed, not shown in the drawing. The latter only serves to press the armature 10 into the position described above which produces the OFF state of the contacts after the excitation of the winding 6 has been switched off, in which the armature 10 is actually held by the permanent magnets 26 is effected.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19608729A DE19608729C1 (en) | 1996-03-06 | 1996-03-06 | Electromagnetic type switching device |
DE19608729 | 1996-03-06 | ||
PCT/DE1997/000331 WO1997033293A1 (en) | 1996-03-06 | 1997-02-24 | Electromagnetic switching device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0885450A1 true EP0885450A1 (en) | 1998-12-23 |
EP0885450B1 EP0885450B1 (en) | 1999-08-25 |
Family
ID=7787437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97915302A Expired - Lifetime EP0885450B1 (en) | 1996-03-06 | 1997-02-24 | Electromagnetic switching device |
Country Status (5)
Country | Link |
---|---|
US (1) | US5959519A (en) |
EP (1) | EP0885450B1 (en) |
CN (1) | CN1065357C (en) |
DE (2) | DE19608729C1 (en) |
WO (1) | WO1997033293A1 (en) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1234135C (en) * | 2001-01-18 | 2005-12-28 | 株式会社日立制作所 | Electromagnetic and operating mechanism of switch using said electromagnet |
DE10232661B4 (en) * | 2002-07-18 | 2005-09-08 | Siemens Ag | Plunger device |
US6972535B1 (en) * | 2004-11-23 | 2005-12-06 | Kuo-Hua Chen | Controller for motor |
EP1876623B1 (en) * | 2006-07-03 | 2013-03-20 | Siemens Aktiengesellschaft | Safety position switch |
US20080036560A1 (en) * | 2006-08-08 | 2008-02-14 | General Electric Company | Electromagnet Apparatus |
ATE434827T1 (en) | 2007-02-23 | 2009-07-15 | Siemens Ag | ELECTROMAGNETIC SWITCHING DEVICE |
ATE549733T1 (en) * | 2007-02-23 | 2012-03-15 | Siemens Ag | ELECTROMAGNETIC SWITCHING DEVICE |
FR2919754B1 (en) * | 2007-07-30 | 2013-11-08 | Valeo Equip Electr Moteur | BISTABLE RELAY |
PL2431991T3 (en) * | 2010-09-20 | 2013-08-30 | Secheron Sa | Release mechanism for circuit interrupting device |
JP5727860B2 (en) | 2011-05-19 | 2015-06-03 | 富士電機機器制御株式会社 | Magnetic contactor |
JP5917853B2 (en) * | 2011-08-11 | 2016-05-18 | 富士通コンポーネント株式会社 | Switches and connectors |
JP6027860B2 (en) * | 2012-02-29 | 2016-11-16 | 株式会社日本自動車部品総合研究所 | Solenoid device and operation method thereof |
JP5914065B2 (en) | 2012-03-12 | 2016-05-11 | 富士電機機器制御株式会社 | Switch |
JP5981756B2 (en) | 2012-04-13 | 2016-08-31 | 富士電機機器制御株式会社 | Magnetic contactor |
JP5965218B2 (en) | 2012-06-08 | 2016-08-03 | 富士電機機器制御株式会社 | Magnetic contactor |
DE102012107922A1 (en) * | 2012-08-28 | 2014-03-06 | Eto Magnetic Gmbh | Electromagnetic actuator device |
KR20140033814A (en) * | 2012-09-10 | 2014-03-19 | 엘에스산전 주식회사 | Electromagnetic switching device |
JP5990091B2 (en) * | 2012-11-13 | 2016-09-07 | 富士電機機器制御株式会社 | electromagnetic switch |
JP6171320B2 (en) * | 2012-12-12 | 2017-08-02 | 富士電機機器制御株式会社 | Magnetic contactor |
CN103915290A (en) * | 2013-01-09 | 2014-07-09 | 厦门宏发电力电器有限公司 | Magnetic latching relay of directly-operated type magnetic circuit structure |
CN103236376B (en) * | 2013-03-29 | 2015-06-17 | 厦门宏发电力电器有限公司 | Magnetic latching relay of dissymmetrical solenoid-type structure |
DE102013210193B4 (en) * | 2013-05-31 | 2019-02-21 | Te Connectivity Germany Gmbh | Arrangement for an electrical switching element, in particular contactor or relay, and electrical switching element with a control module between the yoke leg and coil |
DE102013013585B4 (en) * | 2013-06-20 | 2020-09-17 | Rhefor Gbr | Self-holding magnet with particularly low electrical tripping power |
CN105359243B (en) * | 2013-06-28 | 2018-06-05 | 松下知识产权经营株式会社 | Contact making device and the electromagnetic relay for being equipped with the contact making device |
CN105659481B (en) * | 2013-10-23 | 2020-02-11 | 雷福尔公司 | Electromechanical actuator |
KR101529589B1 (en) * | 2013-12-19 | 2015-06-17 | 엘에스산전 주식회사 | Magnetic contactor |
JP6312021B2 (en) * | 2014-01-30 | 2018-04-18 | パナソニックIpマネジメント株式会社 | Remote control relay |
KR200488063Y1 (en) * | 2014-06-30 | 2018-12-10 | 엘에스산전 주식회사 | Relay |
US9741482B2 (en) * | 2015-05-01 | 2017-08-22 | Cooper Technologies Company | Electromagnetic actuator with reduced performance variation |
JP6536472B2 (en) * | 2016-04-28 | 2019-07-03 | 株式会社デンソー | solenoid |
CN107395799B (en) * | 2017-07-17 | 2020-04-10 | 佛山市川东磁电股份有限公司 | Expansion self-positioning linear electromagnetic switch |
US11769646B2 (en) * | 2020-10-14 | 2023-09-26 | Littelfuse, Inc. | Magnetic core of a relay disconnect switch |
JP2023092759A (en) * | 2021-12-22 | 2023-07-04 | オムロン株式会社 | electromagnetic relay |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1140622B (en) * | 1960-04-12 | 1962-12-06 | Continental Elektro Ind Ag | Arrangement for connecting the contact bridge carrier and magnet armature in small contactors |
US3984795A (en) * | 1976-02-09 | 1976-10-05 | I-T-E Imperial Corporation | Magnetic latch construction |
WO1982003944A1 (en) * | 1981-04-30 | 1982-11-11 | Matsushita Hidetoshi | Polarized electromagnetic relay |
EP0380693B1 (en) * | 1988-08-08 | 1994-06-08 | Mitsubishi Mining & Cement Co., Ltd. | Plunger type electromagnet |
JP2552179B2 (en) * | 1988-09-29 | 1996-11-06 | 三菱電機株式会社 | Polarized electromagnet device |
GB2229038B (en) * | 1989-03-07 | 1994-01-26 | Matsushita Electric Works Ltd | Electromagnetic contactor |
-
1996
- 1996-03-06 DE DE19608729A patent/DE19608729C1/en not_active Expired - Fee Related
-
1997
- 1997-02-24 DE DE59700374T patent/DE59700374D1/en not_active Expired - Lifetime
- 1997-02-24 WO PCT/DE1997/000331 patent/WO1997033293A1/en active IP Right Grant
- 1997-02-24 EP EP97915302A patent/EP0885450B1/en not_active Expired - Lifetime
- 1997-02-24 US US09/125,941 patent/US5959519A/en not_active Expired - Lifetime
- 1997-02-24 CN CN97192239A patent/CN1065357C/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9733293A1 * |
Also Published As
Publication number | Publication date |
---|---|
US5959519A (en) | 1999-09-28 |
CN1211336A (en) | 1999-03-17 |
WO1997033293A1 (en) | 1997-09-12 |
CN1065357C (en) | 2001-05-02 |
DE59700374D1 (en) | 1999-09-30 |
EP0885450B1 (en) | 1999-08-25 |
DE19608729C1 (en) | 1997-07-03 |
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