CN101231923B - Electromagnetic relay resistant to electric repulsive force - Google Patents
Electromagnetic relay resistant to electric repulsive force Download PDFInfo
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- CN101231923B CN101231923B CN2007100085654A CN200710008565A CN101231923B CN 101231923 B CN101231923 B CN 101231923B CN 2007100085654 A CN2007100085654 A CN 2007100085654A CN 200710008565 A CN200710008565 A CN 200710008565A CN 101231923 B CN101231923 B CN 101231923B
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Abstract
The invention discloses an electromagnetic relay which resists electric repulsion force. When a relay contact is closed and the electromagnetic relay works, the relay is loaded, and a coil is provided with a setting signal. The current direction of a second leading-out sheet is opposite to the current direction of a movable spring, thus producing a magnetic field through the interaction. The magnetic field enables the movable spring to produce electromagnetic force. The produced electromagnetic force is in the same direction as the pushing force produced by a pushing card, thus increasing the contact pressure of a contact which is enough to resist the destruction of the electric repulsion force. The invention completely eliminates the technical problem that the electric repulsion force causes the contact to return easily in prior art. The invention further has the advantages of large resultant force of the electromagnetic force and the pushing force, small contact pressure of the contact, small contact resistance, reliable and stable electrical contact of the contact, capability of resisting short-circuit current, preventing the functional relay from being damaged, large switching power of the contact, capability of working under large load for long term, compact conformation, shock resistance, high impact capability, high capability of carrying load, low price, high manufacturability. In addition, the switching frequency of the invention shall not be too high, and the invention is applicable for streamlined production in large quantity.
Description
Technical field
The present invention relates to electromagnetic relay, especially relate to a kind of electromagnetic relay of resistant to electric repulsive force.
Background technology
Electromagnetic relay is as a kind of electromechanical compo, being widely used in electric power control, industrial automation arrangement and household electrical appliance etc. existing magnetic latching relay generally comprises contact system, electromagnetic system, push card, fixed mount, base and shell. and the development trend of electromagnetic relay is low-power consumption, miniaturization and heavy load, has adopted in the existing electromagnetic system to have permanent-magnet steel.The operation principle of band permanent-magnet steel relay by: the open and close state of contact is kept by the magnetic force that permanent-magnet steel produces at ordinary times, when relay contact need be opened or close state (contact or cut-out load), only need add positive and negative dc pulse signal excitation coil, the relay state exchange finishing out and close in moment then, coil does not need to continue energising afterwards, and it is constant only to rely on the magnetic force of permanent-magnet steel just can keep the state of relay.The instantaneous excitation of single pulse can be finished the contact switching, reaches the purpose of energy-saving design.The relay of the straight chip conducting strip of existing use, during the energising of power circuit repeat circuit, the contact contacts moment, produces very big short circuit current between the contact.The electrodynamic repulsion force that this short circuit current forms is always on the rightabout of the closing of contact, and the power of impelling the closing of contact only is the power of electromagnetic system corrective action, be not enough to resistant to electric repulsive force, then easily knock-on and produce hard arc in the contact, the contact is because of producing moment high temperature fusion and burn, so electrodynamic repulsion force has very big destruction.
Summary of the invention
The invention provides a kind of electromagnetic relay of resistant to electric repulsive force, it has overcome present electromagnetic relay because the deficiency that electrodynamic repulsion force brought.
Purpose of the present invention realizes like this: the electromagnetic relay of resistant to electric repulsive force, and it has contact system, electromagnetic system and push card; This contact system comprises first lead-out tablet, fixed contact, second lead-out tablet, moving contact and contact movable contact spring, and fixed contact is fixed in first lead-out tablet, and moving contact is fixed in movable contact spring, and movable contact spring is connected in second lead-out tablet; This electromagnetic system and push card are used for when relay contact closure is worked electromagnetic system and adjust push card and make it produce the motive force that acts on the movable contact spring; Wherein, when relay contact closure is worked, second lead-out tablet and movable contact spring current opposite in direction and the generation magnetic field that interacts, this magnetic field makes movable contact spring produce electromagnetic force, and the electromagnetic force that produces is identical with the motive force direction that push card produces.
Making a concerted effort on closing of contact direction of the motive force that the electromagnetic force of this generation and push card produce.
Rivet between this first lead-out tablet and the fixed contact or be welded to connect; Rivet between this contact movable contact spring first end and the second lead-out tablet first end or be welded to connect, rivet or be welded to connect between moving contact and the contact movable contact spring the second end.
This contact system also comprises two reinforced sheets, two reinforced sheets, one end be fixed in second lead-out tablet and also between moving contact and the contact movable contact spring between, two reinforced sheets and movable contact spring concurrent deformation when relay contact closure is worked.
This two reinforced sheets mid range is flexible depression.
Between this second lead-out tablet and the movable contact spring, second lead-out tablet is can not moving-conductor, but movable contact spring is a moving-conductor.
This first lead-out tablet, second lead-out tablet and contact movable contact spring process by stamping-out.
Make this electromagnetic force and motive force with joint efforts movable contact spring produce deformation, wherein, movable contact spring deformation direction is towards fixed contact or push card, and movable contact spring deformation precompression provides overtravel.
Also comprise: base is provided with reverse button; And shell, be provided with reverse button; The reverse fastening that matches after this shell and the base assembling is buckled together.
Be equipped with bayonet socket on this first lead-out tablet and second lead-out tablet, this base is provided with the band wedge-shaped card tankage that is matched with bayonet socket; Riveted joint earlier of this first lead-out tablet and fixed contact or welding cooperate the base of packing into by bayonet socket and card holding trough again; Riveted joint earlier of this second lead-out tablet, movable contact spring and moving contact or welding cooperate the base of packing into by bayonet socket and card holding trough again.
Also comprise: fixed mount is installed in base; Above-mentioned electromagnetic system comprises armature, permanent-magnet steel, yoke and bobbin, and this electromagnetic system is installed in fixed mount.
Second end of this movable contact spring tilts and the formation beveled end to thickness direction.
Technical scheme of the present invention, when relay contact closure is worked, the relay loading, coil adds asserts signal, second lead-out tablet and movable contact spring current opposite in direction and the generation magnetic field that interacts, this magnetic field makes movable contact spring produce electromagnetic force, and the electromagnetic force that produces is identical with the motive force direction that push card produces, then contact force increases and is enough to the destruction of resistant to electric repulsive force, it has solved the technical problem of the easy rebound in contact that causes because of electrodynamic repulsion force in the background technology fully, it also has following advantage: making a concerted effort of electromagnetic force and motive force is big, the contact contact pressure is big, and contact resistance is little, and the contact electrically contacts reliably, stable, can resist short circuit current completely, prevent the damage of function relay; The contact power switched is big, heavy load work for a long time, but switching frequency is unsuitable too fast; Compact conformation, vibration resistance, impact capacity are strong; Carrying load ability is strong, low price, and good manufacturability can be carried out streamline production in enormous quantities.Riveted joint or welding are adopted in connection between lead-out tablet, quiet, moving contact and the movable contact spring, and technology is simple.Make movable contact spring produce deformation making a concerted effort on closing of contact direction of electromagnetic force and motive force, and movable contact spring deformation direction is towards fixed contact or push card, movable contact spring deformation precompression provides overtravel, contact force increases, and is enough to the destruction of resistant to electric repulsive force, makes the contact contact reliable.Contact system also comprises two reinforced sheets, two reinforced sheets and movable contact spring concurrent deformation when relay contact closure is worked, then strengthen mechanical counter-force, make the contact more closed, inhale the counter-force balance, the deformation precompression makes the contact produce overtravel. and two reinforced sheet mid range are flexible depression and also are into U-shaped, U-shaped partly makes movable contact spring with plastic deformation, strengthen mechanical counter-force, make the contact more closed, inhale the counter-force balance, the deformation precompression makes the contact produce overtravel. and lead-out tablet and contact movable contact spring process by blanking die, moulding is simple, and is cheap.Shell and base are provided with reverse button simultaneously, fit over together by reverse fastening spiral-lock, then prevent the base distortion.Riveted joint earlier of first lead-out tablet and fixed contact or welding cooperate the base of packing into by bayonet socket and card holding trough again, and riveted joint earlier of second lead-out tablet, movable contact spring and moving contact or welding cooperate the base of packing into by bayonet socket and card holding trough again, can prevent that then contact system is loosening and come off.Electromagnetic system is installed in fixed mount, to satisfy the not charged action of relay, promptly can debug ancillary equipment.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the operation principle schematic diagram of contact system.
Fig. 2 is the exploded perspective schematic diagram of relay.
Fig. 3 is the assembling schematic diagram of relay.
Fig. 4 A is the schematic perspective view of movable contact spring.
Fig. 4 B is the schematic side view of movable contact spring.
Fig. 5 is the schematic perspective view of base.
Fig. 6 is the schematic perspective view of shell.
Label declaration: electromagnetic system 10, base 11, push card 12, axle 13, fixed mount 14, shell 15, oppositely detain 16, oppositely detain 17, armature 18, permanent-magnet steel 19, yoke 20, bobbin 21, first lead-out tablet 22, fixed contact 23, second lead-out tablet 24, moving contact 25, contact movable contact spring 26, exit 27, exit 28, bayonet socket 29, guiding wedge-shaped slot 30, reinforced sheet 31.
Embodiment
Please refer to Fig. 2, the electromagnetic relay of resistant to electric repulsive force, it has contact system, electromagnetic system 10, base 11, push card 12, axle 13, fixed mount 14 and shell 15.
Please refer to Fig. 2, Fig. 3, Fig. 5 and Fig. 6; above-mentioned base 11 is provided with reverse button 16; above-mentioned shell 15 is provided with reverse button 17; this shell 15 and base 11 are by reverse button 16 and oppositely detain linking closely mutually between 17 and be assembled together. and fit adopts in the present embodiment is the mode that links closely mutually of reverse button but not as limit, other fit also should belong within protection scope of the present invention.
Please refer to Fig. 2, fixed mount 14 is installed in the base 11; Electromagnetic system 10 comprises armature 18, permanent-magnet steel 19, yoke 20 and bobbin 21, and this electromagnetic system 10 is installed in fixed mount 14; During relay contact closure work, electromagnetic system 10 adjustment push card 12 make it produce the motive force f3. electromagnetic system 10, push card 12 and the fixed mount 14 that act on the movable contact spring 26 and are prior art, are not further described at this in order to reduce length.
Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 A and Fig. 4 B, contact system comprises that first lead-out tablet 22, fixed contact 23, second lead-out tablet 24, moving contact 25 and contact movable contact spring 26, the first lead-out tablets 22, second lead-out tablet 24 and movable contact spring 26 process by stamping-out.First lead-out tablet 22 has exit 27 and link, and first lead-out tablet, 22 links and fixed contact 23 are riveted together; Second lead-out tablet 24 has exit 28 and link, second lead-out tablet, 24 links and movable contact spring 26 first ends are riveted together, movable contact spring 26 the second ends tilt and the formation beveled end to thickness direction, offer the U-shaped groove on movable contact spring 26 beveled ends, and movable contact spring 26 beveled ends and moving contact 25 are riveted together, make that between second lead-out tablet 24 and movable contact spring 26 second lead-out tablet 24 is can not moving-conductor, but movable contact spring 26 is a moving-conductor.Be equipped with bayonet socket 29 on the first above-mentioned lead-out tablet 22 and second lead-out tablet 24.
Please refer to Fig. 1 and Fig. 2, also be provided with two U-shaped reinforced sheets 31 between moving contact 25 and the contact movable contact spring 26, its U-shaped partly makes reed with plastic deformation, strengthen mechanical counter-force, make the contact more closed, inhale the counter-force balance, the deformation precompression makes the contact produce overtravel.
Please refer to Fig. 1, Fig. 2 and Fig. 3, first accommodation seat and second accommodation seat are set on the base 11, be equipped with guiding wedge-shaped slot 30 on this first accommodation seat, second accommodation seat.First lead-out tablet 22 and fixed contact 23 riveted joint earlier is assemblied in first accommodation seat then, and cooperates between bayonet socket 29 by first lead-out tablet 22 and the guiding wedge-shaped slot 30 and assemble, and the exit 27 of first lead-out tablet 22 stretches out in outside the base 11.Second lead-out tablet 24, moving contact 25 and contact movable contact spring 26 riveted joint earlier are assemblied in second accommodation seat then, and cooperate between bayonet socket 29 by second lead-out tablet 24 and the guiding wedge-shaped slot 30 and assemble, and the exit 28 of second lead-out tablet 24 stretches out in outside the base 11.For satisfying the changeable characteristics of power relay mounting means, base that the present invention is provided with and shell can satisfy the assembling that changes the external shape different installation of lead-out tablet, but also can not weaken relay performance.
Please refer to Fig. 1, Fig. 2 and Fig. 3, when relay contact closure is worked, opposite and the generation magnetic field that interacts of second lead-out tablet 24 and movable contact spring 26 sense of current i, this magnetic field makes movable contact spring 26 produce electromagnetic force f1, second lead-out tablet 24 is subjected to electromagnetic force f2, and the electromagnetic force f1 that produces is identical with the motive force f3 direction that push card 12 produces, electromagnetic force f1 and motive force f3 make a concerted effort on closing of contact direction, and this makes a concerted effort to make movable contact spring 26 to produce deformation, wherein, movable contact spring 26 deformation directions are towards fixed contact 23 or push card 12, and movable contact spring 26 deformation precompressions provide overtravel.
The above, only for preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modification, all should still belong in the scope that patent of the present invention contains.
Claims (8)
1. the electromagnetic relay of resistant to electric repulsive force, it has contact system, electromagnetic system and push card, it is characterized in that:
This contact system comprises first lead-out tablet, fixed contact, second lead-out tablet, moving contact and contact movable contact spring, and fixed contact is fixed in first lead-out tablet, and moving contact is fixed in movable contact spring, and movable contact spring is connected in second lead-out tablet;
This electromagnetic system and push card are used for when relay contact closure is worked electromagnetic system and adjust push card and make it produce the motive force that acts on the movable contact spring;
Wherein, when relay contact closure is worked, second lead-out tablet and movable contact spring current opposite in direction and the generation magnetic field that interacts, this magnetic field makes movable contact spring produce electromagnetic force, and the electromagnetic force that produces is identical with the motive force direction that push card produces.
2. the electromagnetic relay of resistant to electric repulsive force according to claim 1 is characterized in that: the making a concerted effort on closing of contact direction of the motive force that the electromagnetic force of this generation and push card produce.
3. the electromagnetic relay of resistant to electric repulsive force according to claim 1 and 2 is characterized in that: rivet between this first lead-out tablet and the fixed contact or be welded to connect; Rivet between this contact movable contact spring first end and the second lead-out tablet first end or be welded to connect, rivet or be welded to connect between moving contact and the contact movable contact spring the second end.
4. the electromagnetic relay of resistant to electric repulsive force according to claim 3, it is characterized in that: this contact system also comprises two reinforced sheets, two reinforced sheets, one end be fixed in second lead-out tablet and also between moving contact and the contact movable contact spring between, two reinforced sheets and movable contact spring concurrent deformation when relay contact closure is worked.
5. the electromagnetic relay of resistant to electric repulsive force according to claim 4 is characterized in that: this two reinforced sheets mid range is flexible depression.
6. the electromagnetic relay of resistant to electric repulsive force according to claim 1 and 2 is characterized in that: between this second lead-out tablet and the movable contact spring, second lead-out tablet is can not moving-conductor, but movable contact spring is a moving-conductor.
7. the electromagnetic relay of resistant to electric repulsive force according to claim 2, it is characterized in that: the movable contact spring generation deformation of making a concerted effort to make of this electromagnetic force and motive force, wherein, movable contact spring deformation direction is towards fixed contact or push card, and movable contact spring deformation precompression provides overtravel.
8. the electromagnetic relay of resistant to electric repulsive force according to claim 3 is characterized in that: second end of this movable contact spring tilts and forms beveled end to thickness direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100085654A CN101231923B (en) | 2007-02-05 | 2007-02-05 | Electromagnetic relay resistant to electric repulsive force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100085654A CN101231923B (en) | 2007-02-05 | 2007-02-05 | Electromagnetic relay resistant to electric repulsive force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101231923A CN101231923A (en) | 2008-07-30 |
| CN101231923B true CN101231923B (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100085654A Ceased CN101231923B (en) | 2007-02-05 | 2007-02-05 | Electromagnetic relay resistant to electric repulsive force |
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| Country | Link |
|---|---|
| CN (1) | CN101231923B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504949A (en) * | 2016-11-25 | 2017-03-15 | 厦门宏发电力电器有限公司 | A kind of magnetic latching relay that can resist short circuit current flow |
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| JP5134657B2 (en) * | 2010-07-27 | 2013-01-30 | 富士電機機器制御株式会社 | Contact mechanism and electromagnetic contactor using the same |
| CN103337415A (en) * | 2013-06-14 | 2013-10-02 | 东莞市三友联众电器有限公司 | Relay contact system |
| DE102013214209A1 (en) * | 2013-07-19 | 2015-01-22 | Tyco Electronics Amp Gmbh | Electrical switching contact and switching device with selbigem |
| CN103715021B (en) * | 2013-12-18 | 2016-08-24 | 北海市深蓝科技发展有限责任公司 | A kind of structure of contact terminal of micro-shake |
| CN103730295B (en) * | 2014-01-13 | 2016-03-09 | 广西睿奕科技发展有限公司 | A kind of magnetic latching relay with flexible quiet contact portion |
| CN103794415B (en) * | 2014-01-23 | 2017-04-05 | 厦门宏发电力电器有限公司 | electromagnetic relay and its movable contact spring |
| DE102014201533A1 (en) * | 2014-01-28 | 2015-07-30 | Tyco Electronics Austria Gmbh | Switching contact and method for its production |
| WO2018095419A1 (en) * | 2016-11-25 | 2018-05-31 | 厦门宏发电力电器有限公司 | Magnetic latching relay capable of resisting short-circuit current |
| WO2019080709A1 (en) | 2017-10-25 | 2019-05-02 | 西安交通大学 | High-voltage relay resistant to instantaneous great-current impact |
| CN108321036B (en) * | 2018-03-30 | 2023-05-23 | 厦门宏发电声股份有限公司 | Electromagnetic relay capable of resisting lightning stroke current |
| CN110504137A (en) * | 2019-08-19 | 2019-11-26 | 哈斯科继电器和电子元件国际有限公司 | A kind of high-power automatic reset magnetic latching relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035917U (en) * | 1988-07-12 | 1989-04-12 | 陈应生 | Dc relay |
| US5359305A (en) * | 1992-06-15 | 1994-10-25 | Matsushita Electric Works, Ltd. | Electromagnetic relay |
| CN2669349Y (en) * | 2003-12-03 | 2005-01-05 | 吴卫明 | Magnetic-holding relay |
| CN201004438Y (en) * | 2007-02-05 | 2008-01-09 | 厦门金合捷投资控股有限公司 | Electromagnetic relay with resistance electric exclusion force |
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2007
- 2007-02-05 CN CN2007100085654A patent/CN101231923B/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035917U (en) * | 1988-07-12 | 1989-04-12 | 陈应生 | Dc relay |
| US5359305A (en) * | 1992-06-15 | 1994-10-25 | Matsushita Electric Works, Ltd. | Electromagnetic relay |
| CN2669349Y (en) * | 2003-12-03 | 2005-01-05 | 吴卫明 | Magnetic-holding relay |
| CN201004438Y (en) * | 2007-02-05 | 2008-01-09 | 厦门金合捷投资控股有限公司 | Electromagnetic relay with resistance electric exclusion force |
Non-Patent Citations (4)
| Title |
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| CN 201004438 Y,权利要求1-2. |
| CN 2669349 Y,全文. |
| JP特开2006-32131A 2006.02.02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504949A (en) * | 2016-11-25 | 2017-03-15 | 厦门宏发电力电器有限公司 | A kind of magnetic latching relay that can resist short circuit current flow |
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| Publication number | Publication date |
|---|---|
| CN101231923A (en) | 2008-07-30 |
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