CN103377857B - Electromagnetic relay and switching device - Google Patents
Electromagnetic relay and switching device Download PDFInfo
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- CN103377857B CN103377857B CN201210110966.1A CN201210110966A CN103377857B CN 103377857 B CN103377857 B CN 103377857B CN 201210110966 A CN201210110966 A CN 201210110966A CN 103377857 B CN103377857 B CN 103377857B
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- static load
- stream plate
- load stream
- movable contact
- armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
- H01H50/42—Auxiliary magnetic circuits, e.g. for maintaining armature in, or returning armature to, position of rest, for damping or accelerating movement
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/22—Polarised relays
- H01H51/2227—Polarised relays in which the movable part comprises at least one permanent magnet, sandwiched between pole-plates, each forming an active air-gap with parts of the stationary magnetic circuit
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- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
The invention discloses a kind of electromagnetic relay, comprising: the static load stream plate be fixedly installed, described static load stream plate has first end and the second end, and static load stream plate first end is provided with fixed contact; At least the movable contact spring that movably arranges of one end, described movable contact spring is provided with moving contact; It is removable to make described moving contact contact with described fixed contact and can arrange dividually that described movable contact spring at least arranges one end of moving contact; It is characterized in that, be provided with magnetic conductive board between described static load stream plate and described movable contact spring, described magnetic conductive board is arranged on static load stream plate, on movable contact spring or static load stream plate and between movable contact spring and the position do not contacted with movable contact spring with static load stream plate; When described moving contact contacts making current with described fixed contact, described magnetic conductive board can reduce the Ampere force between described static load stream plate and described movable contact spring.The present invention can reduce the impact of Ampere force, maintains the safety of electromagnetic relay and switching device.
Description
Technical field
The present invention relates to a kind of electromagnetic relay and switching device.
Background technology
Magnetic keeps electromagnetic relay to be a kind of electric control device, and it has control system (also known as input circuit) and by the interactive relationship between control system (also known as output loop).Magnetic keeps electromagnetic relay to be generally made up of iron core, coil, yoke, armature, permanent magnet, contact reed etc.Its operation principle is: add certain voltage at coil two ends, the electric current that coil midstream is excessively certain, thus produce galvanomagnetic effect, armature will move under the interaction force of electromagnetic force and permanent magnet, thus drive moving contact to contact with fixed contact, connect controlled circuit.When after coil blackout, the suction of electromagnetism also disappears thereupon, and armature to be adsorbed in yoke thus to remain on contacting state under the effect of permanent magnet.Coil midstream crosses reverse current, and armature will counter motion under the interaction force of electromagnetic force and permanent magnet, thus drives moving contact and fixed contact to disconnect, and disconnects by control circuit.Power-off in coil, armature remains on the state that moving contact is separated with fixed contact under the effect of permanent magnet.Relay generally has two circuit, is low-voltage control circuit and high-pressure work circuit.The low-voltage that solenoid passes through or small area analysis are high voltage or big current by what pass through in control circuit.
Magnetic keeps a kind of typical use of electromagnetic relay to be applied in intelligent electric meter.Intelligent electric meter magnetic keeps electromagnetic relay, and requirement can bear 30 times of rated current in short-term.Wherein a kind of structure is, in solenoid, logical forward current, makes the moving contact on movable contact spring contact with the fixed contact on static load stream plate and connect by control circuit.Solenoid leads to reverse current, makes the moving contact on movable contact spring be separated with the fixed contact on static load stream plate and disconnect by control circuit.And when passing through electric current in static load stream plate and movable contact spring, static load stream plate and movable contact spring all can generate an electromagnetic field.The electromagnetic field that static load stream plate and movable contact spring produce separately can produce the active force acting on the other side, i.e. Ampere force.Ampere force is also caused by Lorentz force.The electromagnetic field direction of the respective electric current generation in static load stream plate and movable contact spring can be judged according to the right-hand rule.The direction of the Ampere force that static load stream plate and movable contact spring are subject to separately can be judged according to left hand rule.If static load stream plate is identical with the sense of current of movable contact spring, then it is tightr that the Ampere force that both are subject to can make moving contact contact with fixed contact.If static load stream plate is contrary with the sense of current of movable contact spring, then the Ampere force that both are subject to has the trend that moving contact and fixed contact are separated.
In order to avoid Ampere force hinders the control to circuit, or adopt the structure that static load stream plate is identical with the movable contact spring sense of current; Adopt static load stream plate contrary with the movable contact spring sense of current but be only applied to by the less field of the electric current in control circuit.And some intelligent electric meters, rated current reaches 80A, and when it uses, short time current reaches 30 times of rated current.If rated current is large, so when 30 times of rated current, the static load stream plate that the sense of current is contrary and the Ampere force that movable contact spring is subject to are greater than the pressure between movable contact spring and static load stream plate, are enough to moving contact is separated with fixed contact, cause relay contact to damage, relay function is lost.Therefore, the structure that static load stream plate is contrary with the movable contact spring sense of current, its application is restricted.But the electromagnetic relay of the structure that static load stream plate is contrary with the movable contact spring sense of current is applied in the fields such as intelligent electric meter, and other parts have the design adapted with it.When improving rated current, as redesigned electromagnetic relay, then its repacking is difficult, cost is high, implements trouble.
Summary of the invention
An object of the present invention is to overcome deficiency of the prior art, provides a kind of electromagnetic relay reducing Ampere force impact.
For realizing above object, the present invention is achieved through the following technical solutions:
Electromagnetic relay, comprising: the static load stream plate be fixedly installed, and described static load stream plate has first end and the second end, and static load stream plate first end is provided with fixed contact; At least the movable contact spring that movably arranges of one end, described movable contact spring is provided with moving contact; It is removable to make described moving contact contact with described fixed contact and can arrange dividually that described movable contact spring at least arranges one end of moving contact; It is characterized in that, be provided with magnetic conductive board between described static load stream plate and described movable contact spring, described magnetic conductive board is arranged on static load stream plate, on movable contact spring or static load stream plate and between movable contact spring and the position do not contacted with movable contact spring with static load stream plate; When described moving contact contacts making current with described fixed contact, described magnetic conductive board can reduce the Lorentz force between described static load stream plate and described movable contact spring.
Preferably, described movable contact spring has first end and the second end, and described moving contact is arranged on first end; The distance of described first end and described static load stream plate is less than the distance of described second end and described static load stream plate.
Preferably, to light the direction of direction extension with movable contact spring automated contact of extension identical from arranging stationary contact for described static load stream plate, when described moving contact contacts making current with described fixed contact, described static load stream plate is connected with the contrary electric current in direction with described movable contact spring.
Preferably, the width of described magnetic conductive board is 1 to 1.5/2nd times of described static load stream plate width.
Preferably, the width of described magnetic conductive board is identical with the width of described static load stream plate.
Preferably, the width of described magnetic conductive board is greater than the width of described static load stream plate, is less than 1.5 times of static load stream plate width.
Preferably, described movable contact spring has the first paragraph relative with described static load stream plate and the second segment relative with described static load stream plate; First paragraph is connected by the 3rd section with second segment; The distance of described first paragraph and described static load stream plate is less than the distance of described second segment and described static load stream plate; Described moving contact is arranged on first paragraph; Described magnetic conductive board is arranged between fixed contact and the second end; Described magnetic conductive board is more than or equal to the distance between moving contact and the 3rd section from the length that stationary contact lights extension.
Preferably, described magnetic conductive board length is less than or equal to the distance between moving contact and second segment.
Preferably, described electromagnetic relay also comprises the end tab be fixedly installed, and the second segment of described movable contact spring is fixedly connected on end tab; The first paragraph that described movable contact spring arranges moving contact also can be arranged away from static load stream plate near static load stream plate; Described end tab and static load stream plate form two leading-out terminals of switch.
Preferably, on the Width of described static load stream plate, the length of described magnetic conductive board is constant.
Preferably, described electromagnetic relay also comprises housing, and described housing is provided with cavity volume; Described static load stream plate is arranged on described housing and first end is positioned at cavity volume, the second end is positioned at outside cavity volume; Described movable contact spring is arranged in cavity volume, and end tab is arranged on housing, and end tab two ends lay respectively in cavity volume and outside cavity volume; One end that movable contact spring does not arrange moving contact is connected with end tab; Electromagnetic assembly is provided with in cavity volume; Electromagnetic assembly drives movable contact spring to move moving contact and fixed contact are contacting and separating.
Preferably, described magnetic conductive board is soft magnetic material plate.More preferably, described magnetic conductive board is iron plate.
Two of object of the present invention is to overcome deficiency of the prior art, provides a kind of switching device reducing Ampere force impact.
For realizing above object, the present invention is achieved through the following technical solutions:
Switching device, is characterized in that, comprising: housing, and described housing is provided with cavity volume; The static load stream plate be fixedly installed, described static load stream plate has first end and the second end, and static load stream plate first end is provided with fixed contact; The first end arranging fixed contact is positioned at cavity volume, and the second end not arranging fixed contact is positioned at outside cavity volume; At least movable contact spring that movably arranges of one end, the movable one end of described movable contact spring is arranged in cavity volume; The movable one end of movable contact spring is provided with moving contact; The movable one end of described movable contact spring is moved and described moving contact can be made to contact with described fixed contact and can separate; Magnetic conductive board, described magnetic conductive board is between described static load stream plate and described movable contact spring, and described magnetic conductive board is arranged on described static load stream plate, on described movable contact spring or described static load stream plate and between described movable contact spring and the position do not contacted with described movable contact spring with described static load stream plate; Driver part, described driver part and described movable contact spring are in transmission connection, and described driver part drives the movable one end of described movable contact spring to move to make described moving contact contact with described fixed contact and separate.
Preferably, described driver part is electromagnetic drive.
Preferably, described electromagnetic drive comprises coil, iron core, yoke and armature; Iron core described in described coil encircling is arranged, and described yoke is connected with described iron core, and described armature has magnetic; When described coil electricity, described iron core, described yoke produce magnetic; Described armature moves by the magnetic drive of described yoke after described yoke produces magnetic; One end that the armature of described motion drives described movable contact spring to arrange moving contact is moved.
Preferably, described yoke comprises L-type first yoke and L-type second yoke; The first end of described L-type first yoke is connected with the first end of described iron core, and the described first end of L-type second yoke is connected with the second end of described iron core; Described armature comprises the first armature, and described first armature is arranged rotationally; When described coil electricity, the two ends of described first armature are subject to attraction and the repulsion of the second end of described L-type first yoke and the second end of described L-type second yoke respectively.
Preferably, described armature also comprises the second armature, and the first armature and the second armature link and arranges and have gap between the two, in second end of the described L-type first yoke gap between described first armature and described second armature, in second end of the described L-type second yoke gap between described first armature and described second armature, when described coil electricity, described first armature of its both sides of two port of described L-type first yoke is identical with the force direction of described second armature, described first armature of its both sides of two port of described L-type second yoke is identical with the force direction of described second armature, and the second end of described L-type first yoke is contrary to the described first armature force direction being positioned at its same side with the second end of described L-type second yoke, second end of described L-type first yoke is contrary to the described second armature force direction being positioned at its same side with the second end of described L-type second yoke.
Preferably, described first armature is contrary with described second armature magnetic.
Preferably, described first armature and described second armature are arranged on fixed mount; Described fixed mount is provided with pivot, described pivot between described first armature and described second armature, and between second end and the second end of described L-type second yoke of described L-type first yoke; Described pivot is arranged in described cavity volume rotationally; One end that described fixed mount and described movable contact spring arrange described moving contact is in transmission connection.
Preferably, also comprise a push pedal, in described cavity volume, be provided with chute; Described push pedal can move to make described push pedal only close and away from described fixed contact the side of described moving contact can be made to move up in described chute.
Preferably, described armature fixed mount is provided with push rod; One end movable with described movable contact spring, push pedal one end is connected, and the other end is connected with described push rod; Described push rod drives described movable contact spring at least to move one end by described push pedal.
Preferably, described fixed mount is provided with permanent magnet; Described first armature and described second armature are iron plate; Described first armature and described second armature respectively with two end in contact of described permanent magnet.
Preferably, described movable contact spring has first end and the second end, and described moving contact is arranged on the first end of described movable contact spring; The distance of described movable contact spring first end and described static load stream plate is less than the distance of described movable contact spring second end and described static load stream plate.
Preferably, to light the direction of extension identical with the direction of described movable contact spring extension from described moving contact from arranging described stationary contact for described static load stream plate, when described moving contact contacts making current with described fixed contact, described static load stream plate is connected with the contrary electric current in direction with described movable contact spring.
Preferably, the width of described magnetic conductive board is 1 to 1.5/2nd times of described static load stream plate width.
Preferably, the width of described magnetic conductive board is identical with the width of described static load stream plate.
Preferably, the width of described magnetic conductive board is greater than the width of described static load stream plate, is less than 1.5 times of static load stream plate width.
Preferably, described movable contact spring has the first paragraph relative with described static load stream plate and the second segment relative with described static load stream plate; Described first paragraph is connected by the 3rd section with described second segment; The distance of described first paragraph and described static load stream plate is less than the distance of described second segment and described static load stream plate; Described moving contact is arranged on described first paragraph; Described magnetic conductive board length is more than or equal to the length of the described first paragraph between described moving contact and described second segment.
Preferably, described magnetic conductive board length is less than or equal to the distance between described moving contact and described second segment.
Preferably, described switching device also comprises the end tab be fixedly installed, and the second segment of described movable contact spring is fixedly connected on described end tab; The first paragraph that described movable contact spring arranges described moving contact also can be arranged away from described static load stream plate near described static load stream plate; Described end tab and described static load stream plate form two leading-out terminals of described switching device.
Preferably, on the Width of described static load stream plate, the width of described magnetic conductive board is constant.
Preferably, described magnetic conductive board is soft magnetic material plate.More preferably, described magnetic conductive board is iron plate.
Preferably, described switching device is that magnetic keeps electromagnetic relay.
Preferably, described driver part comprises fixed mount, and described fixed mount is arranged in described cavity volume pivotly; Described fixed mount is provided with push rod, and described push rod is in transmission connection by push pedal and the movable one end of described movable contact spring; Described housing is provided with through hole; Described push rod from described through hole through housing and its one end is positioned at outside cavity volume; Described push rod can move to drive movable contact spring at least to move one end by push pedal in described through hole.
Electromagnetic relay in the present invention and switching device, magnetic conductive board is between static load stream plate and movable contact spring, namely be arranged in the transmission route process in the magnetic field of static load stream plate or movable contact spring generation, when magnetic field transmission is to magnetic conductive board, magnetic field changes transmission direction and transmits along magnetic conductive board, therefore magnetic conductive board can reduce the electromagnetic field intensity of the movable contact spring generation transferring to static load stream plate, also can reduce the electromagnetic field intensity of the static load stream plate generation transferring to movable contact spring, thus reduces the Ampere force to static load stream plate and movable contact spring.Reduce Ampere force, can guarantee that movable contact spring can remain that moving contact contacts with fixed contact.Even if circuit 30 is doubly to rated current greatly, in short-term by control circuit rated current, movable contact spring still can keep moving contact to contact with fixed contact, prevents relay, switching device from damaging, and plays the controlling functions of relay, switching device.
Electromagnetic relay in the present invention and switching device, structure is simple, can bear short time current 30 doubly to rated current.The present invention can reduce the impact of Ampere force, maintain the safety of electromagnetic relay and switching device, both widened the static load stream plate relay of structure contrary with the movable contact spring sense of current and the application of switching device, avoided the existing static load stream plate relay of structure contrary with the movable contact spring sense of current and the large-scale redevelopment of switching device.
Accompanying drawing explanation
Fig. 1 is that the magnetic in the present invention keeps electromagnetic relay structural representation.
Fig. 2 is that the magnetic in the present invention keeps electromagnetic relay internal structure schematic diagram.
Fig. 3 is that the magnetic in the present invention keeps electromagnetic relay cutaway view.
Fig. 4 is magnetic in the present invention structural representation when keeping electromagnetic relay not arrange movable member.
Fig. 5 is the electromagnetic assembly cutaway view in the present invention.
Fig. 6 is the movable member structural representation in the present invention.
Fig. 7 is the movable member cutaway view in the present invention.
Fig. 8 is the switch block structural representation in the present invention.
Fig. 9 is the static load stream plate end view in the present invention.
Figure 10 is the movable contact spring structural representation in the present invention.
Figure 11 is that the magnetic in the present invention keeps electromagnetic relay first using state schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
As shown in Figure 1 and Figure 2, electromagnetic relay 100, comprises housing 110, and housing 110 is provided with cavity volume 120.The electromagnetic assembly 200 shown in Fig. 5, the rotatable components 300 shown in Fig. 6 and Fig. 7 and the switch block shown in Fig. 8 to Figure 10 900 is provided with in cavity volume 120.
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, electromagnetic assembly comprises coil 210, iron core 220, L-type first yoke 230 and L-type second yoke 240.Coil 210 is arranged around iron core 220, and itself and two contact pins (211,212) are electrically connected.Two contact pins (211,212) are fixedly installed on housing 110.Two contact pins (211,212) can connect power positive cathode, respectively to make generation current in coil 210.In coil 210 during generation current, make iron core 220 produce magnetic, the first end 221 of iron core is contrary with the second end 222 magnetic.When being connected with current in opposite in coil 210, first end 221 magnetic of iron core is contrary; Second end 222 magnetic of iron core is also contrary.The first end 231 of L-type first yoke is connected with the first end 221 of iron core, and the magnetic of the first end 221 of iron core can be passed to the second end 232 of L-type first yoke.The first end 241 of L-type second yoke is connected with the second end 222 of iron core, and the magnetic of the second end 222 of iron core can be passed to the second end 242 of L-type second yoke.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 6 and Fig. 7, movable member 300 comprises fixed mount 310, permanent magnet 320, first armature 330 and the second armature 340.Permanent magnet 320, first armature 330 and the second armature 340 are fixed on fixed mount 310.Between first armature 330 and the second armature 340, there is gap.As shown in Figure 7, the first armature 330 and the second armature 340 lay respectively on the right side of permanent magnet 320 and left side.First armature 330 and the second armature 340 are iron plate, both respectively with left and right two end in contact of permanent magnet 320.Therefore first armature 330 and the second armature 340 have contrary magnetic.Second end 232 of L-type first yoke is between the first armature 330 and the second armature 340, second end 242 of L-type second yoke is between the first armature 330 and the second armature 340, and the second end 232 of L-type first yoke and L-type and between the second end 242 of yoke, there is gap, lay respectively at the both sides up and down of permanent magnet 320.Fixed mount 310 is provided with two pivots 311 (shown in figure one), one of them pivot 311 is inserted in the installing hole 121 in cavity volume 120 rotationally.Pivot 311 between the first armature 330 and the second armature 340, and at the second end 232 of L-type first yoke and L-type and between the second end 242 of yoke.Fixed mount 310 can around two pivot 311 pivotables.Fixed mount 310 is provided with push rod 312.Housing 110 is provided with through hole 111.Push rod 312 is from through hole 111 through housing 110, and its end is positioned at outside cavity volume 120, and push rod 312 can move in through hole 111.Fixed mount 310 pivotally 311 pivotable time, push rod 312 swings in through hole 111.
Also be provided with drive disk assembly in cavity volume 120, drive disk assembly is push pedal 400.The first end 401 of push pedal is connected with push rod 312.Chute 122 is provided with in cavity volume 120.Push pedal 400 is arranged in chute 122 movably.Chute 122 is for limiting the direction of motion of push pedal 400.When push rod 312 swings, push pedal 400 is driven to move left and right.
As shown in Fig. 2, Fig. 3, Fig. 8, Fig. 9 and Figure 10, switch block 900 comprises static load stream plate 500, end tab 600 and movable contact spring 700.
Static load stream plate 500 is fixedly installed on housing 110.Static load stream plate 500 one end is positioned at cavity volume 120, and the other end is positioned at outside cavity volume 120.One end that static load stream plate 500 is positioned at cavity volume 120 is provided with circular fixed contact 510.
End tab 600 is fixedly installed on housing 110.Its one end is positioned at outside cavity volume 120, and the other end is positioned at cavity volume 120.End tab 600 and static load stream plate 500 form two leading-out terminals of switch, for connecting circuit.
Movable contact spring 700 is arranged in cavity volume 120.The first end 701 of movable contact spring is connected with push pedal 400.When push pedal 400 moves left and right, the first end 701 of movable contact spring can be driven to move left and right.Be divided into three sections between the first end 701 of movable contact spring and the second end 702, first paragraph 710, second segment 720 are all oppositely arranged with static load stream plate 500, and parallel with static load stream plate 500.First paragraph 710 and the distance of static load stream plate 500 of movable contact spring are less than the distance of second segment 720 and static load stream plate 500.The first paragraph 710 of movable contact spring is connected by the 3rd section 730 with second segment 720.Second end 702 of movable contact spring is connected with end tab 600.Movable contact spring 700 has certain elasticity, and to make it when the second end 702 is fixing, first end 701 can drive by push pedal 400 and move.First paragraph 710 is provided with circular moving contact 740.Distance between moving contact 740 and the 3rd section 730 is L1.The vertical length of the 3rd section 730 is L3, that is to say that the distance between first paragraph 710 and second segment 720 is L3.Moving contact 740 and fixed contact about 510 are oppositely arranged.When push pedal 400 drives the first end 701 of movable contact spring to move, the first end 701 of the servo-actuated reed of moving contact 740 moves and moves to and contacts with fixed contact 510 or be separated.
Magnetic conductive board 800 is provided with between static load stream plate 500 and movable contact spring 700.Magnetic conductive board 800 is for having the iron plate of magnetic conductivity.Magnetic conductive board 800 is fixedly installed on static load stream plate 500.Magnetic conductive board 800 width is identical with static load stream plate 500 width.The length of magnetic conductive board 800 is L2.L2 is greater than L1, but is less than L1 and L3 sum.Magnetic conductive board 800 has arc notch 801, and a part for fixed contact 510 is positioned at arc notch 801.
Magnetic conductive board 800 in the present invention also can not arrange breach 801, and on the Width of static load stream plate 500, the length of magnetic conductive board 800 is constant.Magnetic conductive board 800 in the present invention can adopt soft magnetic material to make tabular.
Upper and lower, left and right in the present invention are relative concept.
Magnetic in the present invention keeps electromagnetic relay using method as follows:
As shown in figure 11, the first armature 330 all contacts with permanent magnet 320 with the second armature 340 and is with and is magnetic, and both magnetic are contrary.The lower end of the first armature 330 is adjacent to L-type second yoke 240, second armature 340 upper end because of magnetic attraction is adjacent to L-type first yoke 230 because of magnetic attraction.Now, push rod 312 is positioned at the low order end of through hole 111.By push pedal 400, push rod 312 makes the first end 701 of movable contact spring remain on the rightest position, make moving contact 740 and fixed contact 510 be in released state and distance farthest.Switch block 900 is in off-state.
On the basis of the first using state, after the first armature coil 210 is energized, L-type first yoke 230 and L-type second yoke 240 all produce magnetic.The magnetic of L-type first yoke 230 is contrary with the first armature 330 magnetic, same with the second armature 340 Magnetic Phase.The magnetic of L-type second yoke 240 and the first armature 330 Magnetic Phase are together, contrary with the second armature 340 magnetic.Because of magnetic attraction and repulsive interaction, the upper end of the first armature 330 is subject to the attraction left of L-type first yoke 230, and the lower end of the first armature is subject to L-type second yoke 240 repulsive force to the right; The upper end of the second armature is subject to the repulsive force left of L-type first yoke 230, and the lower end of the second armature is subject to L-type second yoke 240 attraction to the right.Under the effect of magnetic force, fixed mount 310 is 311 counterclockwise pivotables pivotally, until the upper end of the first armature 330 and L-type first yoke 230 are adjacent to, the lower end of the first armature 330 and L-type second yoke 240 are adjacent to.When fixed mount 310 is rotated counterclockwise, push rod 312 is moved to the left.By the transmission of push pedal 400, push rod 312 drives the first end 701 of movable contact spring to be moved to the left, and moving contact 710 reduces with the distance of fixed contact 510.
Continue the electric current in hold-in winding 210, L-type first yoke 230 and L-type second yoke 240 continue to remain unchanged to the force direction of the first armature 330 and the second armature 340.Fixed mount 310 continues to be rotated counterclockwise, until as shown in Figure 2, the upper end of the first armature 330 is adjacent to L-type first yoke 230, second armature 340 lower end because of magnetic attraction is adjacent to L-type second yoke 240 because of magnetic attraction.Now, push rod 312 moves to the high order end of through hole 111.By the transmission of push pedal 400, push rod 312 drives the first end 701 of movable contact spring to be moved to the left moving contact 710 and contacts with fixed contact 510.When moving contact 710 contacts with fixed contact 510, switch block 900 is in closure state, and it can form current path.Utilize the electro permanent magnetic of electromagnetic assembly, moving contact 710 and fixed contact 510 can be made to remain on contact condition, and switch block 900 is in closure state all the time.Even if now coil 210 power-off, also can utilize the magnetic force of the first armature 330 and the second armature 340, make the first armature 330 and the second armature 340 be adsorbed on L-type first yoke 230 and L-type second yoke 240, thus remain on the state shown in Fig. 2.
As needed cut-off switch parts 900, only rightabout electric current need be passed in coil 310.L-type first yoke 230 is all contrary with direction during the second using state to the force direction of the first armature 330 with L-type second yoke 240.L-type first yoke 230 is all contrary with during the second using state to the force direction of the second armature 340 with L-type second yoke 240.Therefore fixed mount 310 is clockwise to the first state shown in Figure 11, and moving contact 710 is separated with fixed contact 510.Now switch block 900 is in off-state, by circuitry cuts.
Because the jack position of socket is determined, be positioned at static load stream plate outside cavity volume 120 and end tab distance is determined.More greatly, the first paragraph 710 of the movable contact spring 710 in the present invention is nearer apart from static load stream plate 500 relative to second segment 720 for contact area in order to reduce contact angle between moving contact 710 and fixed contact 510, when making both contact.Therefore, the Lorentz force between the first paragraph 710 of static load stream plate 500 and movable contact spring 700 is larger.Transient current 30 doubly to rated current time, its Lorentz force can exceed the thrust of electromagnetic assembly 200 pairs of movable contact springs 700, moving contact 710 and fixed contact 510 is separated, thus cut off circuit.This situation belongs to the fault that magnetic keeps electromagnetic relay, does not meet instructions for use.In the present invention, magnetic conductive board 800 is set between static load flow 500 and movable contact spring 700, guide function can be played to the electromagnetism of static load flow 500 or movable contact spring 700, reduce the electromagnetism crossing magnetic conductive board 800, thus reduce the Lorentz force between static load stream plate 500 and movable contact spring 700.Magnetic conductive board 800 width is identical with static load stream plate 500 width, and maximizing reduces the impact of Lorentz force.Because the Lorentz force between static load stream plate 500 and the first paragraph 710 of movable contact spring is maximum, therefore, the length that the length of magnetic conductive board 800 covers the first paragraph between moving contact 710 and the 3rd section 730 both can the impact of abundant Lorentz force, while also save material.Push rod in the present invention stretches out outside cavity volume, when electromagnetic assembly breaks down, can the disconnection of hand control switch parts and closed, and use safer.
Embodiment in the present invention, only for the present invention will be described, does not form the restriction to right, other equivalent in fact substituting, all in scope that those skilled in that art can expect.
Claims (34)
1. electromagnetic relay, comprising:
The static load stream plate be fixedly installed, described static load stream plate has first end and the second end, and static load stream plate first end is provided with fixed contact;
At least the movable contact spring that movably arranges of one end, described movable contact spring is provided with moving contact; It is removable to make described moving contact contact with described fixed contact and can arrange dividually that described movable contact spring at least arranges one end of moving contact;
It is characterized in that, to light the direction of direction extension with movable contact spring automated contact of extension identical from arranging stationary contact for described static load stream plate, when described moving contact contacts making current with described fixed contact, described static load stream plate is connected with the contrary electric current in direction with described movable contact spring; Be provided with magnetic conductive board between described static load stream plate and described movable contact spring, described magnetic conductive board is arranged on static load stream plate, on movable contact spring or static load stream plate and between movable contact spring and the position do not contacted with movable contact spring with static load stream plate;
When described moving contact contacts making current with described fixed contact, described magnetic conductive board can reduce the Lorentz force between described static load stream plate and described movable contact spring.
2. electromagnetic relay according to claim 1, is characterized in that, described movable contact spring has first end and the second end, and described moving contact is arranged on first end; The distance of described first end and described static load stream plate is less than the distance of described second end and described static load stream plate.
3. electromagnetic relay according to claim 1, is characterized in that, the width of described magnetic conductive board is 1 to 1.5/2nd times of described static load stream plate width.
4. electromagnetic relay according to claim 3, is characterized in that, the width of described magnetic conductive board is identical with the width of described static load stream plate.
5. electromagnetic relay according to claim 3, is characterized in that, the width of described magnetic conductive board is greater than the width of described static load stream plate, is less than 1.5 times of static load stream plate width.
6. electromagnetic relay according to claim 1, is characterized in that, described movable contact spring has the first paragraph relative with described static load stream plate and the second segment relative with described static load stream plate; First paragraph is connected by the 3rd section with second segment; The distance of described first paragraph and described static load stream plate is less than the distance of described second segment and described static load stream plate; Described moving contact is arranged on first paragraph; Described magnetic conductive board is arranged between fixed contact and the second end; Described magnetic conductive board is more than or equal to the distance between moving contact and the 3rd section from the length that stationary contact lights extension.
7. electromagnetic relay according to claim 6, is characterized in that, described magnetic conductive board length is less than or equal to the distance between moving contact and second segment.
8. electromagnetic relay according to claim 6, is characterized in that, described electromagnetic relay also comprises the end tab be fixedly installed, and the second segment of described movable contact spring is fixedly connected on end tab; The first paragraph that described movable contact spring arranges moving contact also can be arranged away from static load stream plate near static load stream plate; Described end tab and static load stream plate form two leading-out terminals of switch.
9. electromagnetic relay according to claim 1, is characterized in that, on the Width of described static load stream plate, the length of described magnetic conductive board is constant.
10. according to the electromagnetic relay in the claims 1-9 described in any one, it is characterized in that, described electromagnetic relay also comprises housing, and described housing is provided with cavity volume; Described static load stream plate is arranged on described housing and first end is positioned at cavity volume, the second end is positioned at outside cavity volume; Described movable contact spring is arranged in cavity volume, and end tab is arranged on housing, and end tab two ends lay respectively in cavity volume and outside cavity volume; One end that movable contact spring does not arrange moving contact is connected with end tab; Electromagnetic assembly is provided with in cavity volume; Electromagnetic assembly drives movable contact spring to move moving contact and fixed contact are contacting and separating.
11. electromagnetic relays according to claim 1, is characterized in that, described magnetic conductive board is soft magnetic material plate.
12. electromagnetic relays according to claim 11, is characterized in that, described magnetic conductive board is iron plate.
13. switching devices, is characterized in that, comprising:
Housing, described housing is provided with cavity volume;
The static load stream plate be fixedly installed, described static load stream plate has first end and the second end, and static load stream plate first end is provided with fixed contact; The first end arranging fixed contact is positioned at cavity volume, and the second end not arranging fixed contact is positioned at outside cavity volume;
At least movable contact spring that movably arranges of one end, the movable one end of described movable contact spring is arranged in cavity volume; The movable one end of movable contact spring is provided with moving contact; The movable one end of described movable contact spring is moved and described moving contact can be made to contact with described fixed contact and can separate; To light the direction of extension identical with the direction of described movable contact spring extension from described moving contact from arranging described stationary contact for described static load stream plate, when described moving contact contacts making current with described fixed contact, described static load stream plate is connected with the contrary electric current in direction with described movable contact spring;
Magnetic conductive board, described magnetic conductive board is between described static load stream plate and described movable contact spring, and described magnetic conductive board is arranged on described static load stream plate, on described movable contact spring or described static load stream plate and between described movable contact spring and the position do not contacted with described movable contact spring with described static load stream plate; Driver part, described driver part and described movable contact spring are in transmission connection, and described driver part drives the movable one end of described movable contact spring to move to make described moving contact contact with described fixed contact and separate.
14. switching devices according to claim 13, is characterized in that, described driver part is electromagnetic drive.
15. switching devices according to claim 14, is characterized in that, described electromagnetic drive comprises coil, iron core, yoke and armature; Iron core described in described coil encircling is arranged, and described yoke is connected with described iron core, and described armature has magnetic; When described coil electricity, described iron core, described yoke produce magnetic; Described armature moves by the magnetic drive of described yoke after described yoke produces magnetic; One end that the armature of described motion drives described movable contact spring to arrange moving contact is moved.
16. switching devices according to claim 15, is characterized in that, described yoke comprises L-type first yoke and L-type second yoke; The first end of described L-type first yoke is connected with the first end of described iron core, and the described first end of L-type second yoke is connected with the second end of described iron core; Described armature comprises the first armature, and described first armature is arranged rotationally; When described coil electricity, the two ends of described first armature are subject to attraction and the repulsion of the second end of described L-type first yoke and the second end of described L-type second yoke respectively.
17. switching devices according to claim 16, is characterized in that, described armature also comprises the second armature, and the first armature and the second armature link and arranges and have gap between the two, in second end of the described L-type first yoke gap between described first armature and described second armature, in second end of the described L-type second yoke gap between described first armature and described second armature, when described coil electricity, described first armature of its both sides of two port of described L-type first yoke is identical with the force direction of described second armature, described first armature of its both sides of two port of described L-type second yoke is identical with the force direction of described second armature, and the second end of described L-type first yoke is contrary to the described first armature force direction being positioned at its same side with the second end of described L-type second yoke, second end of described L-type first yoke is contrary to the described second armature force direction being positioned at its same side with the second end of described L-type second yoke.
18. switching devices according to claim 17, is characterized in that, described first armature is contrary with described second armature magnetic.
19. switching devices according to claim 17, is characterized in that, described first armature and described second armature are arranged on fixed mount; Described fixed mount is provided with pivot, described pivot between described first armature and described second armature, and between second end and the second end of described L-type second yoke of described L-type first yoke; Described pivot is arranged in described cavity volume rotationally; One end that described fixed mount and described movable contact spring arrange described moving contact is in transmission connection.
20. switching devices according to claim 19, is characterized in that, also comprise a push pedal, are provided with chute in described cavity volume; Described push pedal can move to make described push pedal only close and away from described fixed contact the side of described moving contact can be made to move up in described chute.
21. switching devices according to claim 20, is characterized in that, described armature fixed mount is provided with push rod; One end movable with described movable contact spring, push pedal one end is connected, and the other end is connected with described push rod; Described push rod drives described movable contact spring at least to move one end by described push pedal.
22. switching devices according to claim 21, is characterized in that, described fixed mount is provided with permanent magnet; Described first armature and described second armature are iron plate; Described first armature and described second armature respectively with two end in contact of described permanent magnet.
23. switching devices according to claim 13, is characterized in that, described movable contact spring has first end and the second end, and described moving contact is arranged on the first end of described movable contact spring; The distance of described movable contact spring first end and described static load stream plate is less than the distance of described movable contact spring second end and described static load stream plate.
24. switching devices according to claim 13, is characterized in that, the width of described magnetic conductive board is 1 to 1.5/2nd times of described static load stream plate width.
25. switching devices according to claim 24, is characterized in that, the width of described magnetic conductive board is identical with the width of described static load stream plate.
26. switching devices according to claim 24, is characterized in that, the width of described magnetic conductive board is greater than the width of described static load stream plate, is less than 1.5 times of static load stream plate width.
27. switching devices according to claim 13, is characterized in that, described movable contact spring has the first paragraph relative with described static load stream plate and the second segment relative with described static load stream plate; Described first paragraph is connected by the 3rd section with described second segment; The distance of described first paragraph and described static load stream plate is less than the distance of described second segment and described static load stream plate; Described moving contact is arranged on described first paragraph; Described magnetic conductive board length is more than or equal to the length of the described first paragraph between described moving contact and described second segment.
28. switching devices according to claim 27, is characterized in that, described magnetic conductive board length is less than or equal to the distance between described moving contact and described second segment.
29. switching devices according to claim 28, is characterized in that, described switching device also comprises the end tab be fixedly installed, and the second segment of described movable contact spring is fixedly connected on described end tab; The first paragraph that described movable contact spring arranges described moving contact also can be arranged away from described static load stream plate near described static load stream plate; Described end tab and described static load stream plate form two leading-out terminals of described switching device.
30. switching devices according to claim 13, is characterized in that, on the Width of described static load stream plate, the width of described magnetic conductive board is constant.
31. switching devices according to claim 13, is characterized in that, described magnetic conductive board is soft magnetic material plate.
32. switching devices according to claim 31, is characterized in that, described magnetic conductive board is iron plate.
33. switching devices according to claim 13, is characterized in that, described switching device is that magnetic keeps electromagnetic relay.
34. switching devices according to claim 13, is characterized in that, described driver part comprises fixed mount, and described fixed mount is arranged in described cavity volume pivotly; Described fixed mount is provided with push rod, and described push rod is in transmission connection by push pedal and the movable one end of described movable contact spring; Described housing is provided with through hole; Described push rod from described through hole through housing and its one end is positioned at outside cavity volume; Described push rod can move to drive movable contact spring at least to move one end by push pedal in described through hole.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210110966.1A CN103377857B (en) | 2012-04-16 | 2012-04-16 | Electromagnetic relay and switching device |
| PCT/CN2013/000431 WO2013155870A1 (en) | 2012-04-16 | 2013-04-13 | Electromagnetic relay and switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210110966.1A CN103377857B (en) | 2012-04-16 | 2012-04-16 | Electromagnetic relay and switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103377857A CN103377857A (en) | 2013-10-30 |
| CN103377857B true CN103377857B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210110966.1A Active CN103377857B (en) | 2012-04-16 | 2012-04-16 | Electromagnetic relay and switching device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103377857B (en) |
| WO (1) | WO2013155870A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI662575B (en) * | 2016-12-21 | 2019-06-11 | 松川精密股份有限公司 | No arcing method when the relay is mated with the joint |
| CN107644785B (en) * | 2017-10-12 | 2020-04-21 | 三友联众集团股份有限公司 | Improved moving spring relay |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2577433Y (en) * | 2002-10-19 | 2003-10-01 | 苏怀彬 | High-power electromagnetic relay |
| CN2798300Y (en) * | 2005-08-30 | 2006-07-19 | 张兴建 | Bidirectional full self locking relay |
| CN101335156A (en) * | 2007-06-29 | 2008-12-31 | 厦门宏发电声有限公司 | Magnet retaining relay |
| CN201397773Y (en) * | 2009-03-06 | 2010-02-03 | 上海亚银电器制造有限公司 | Magnetic latching relay |
| CN201886978U (en) * | 2010-12-18 | 2011-06-29 | 厦门宏发电力电器有限公司 | Magnetic hold relay with symmetric transmission type structure |
| CN202977311U (en) * | 2012-04-16 | 2013-06-05 | 泰科电子(深圳)有限公司 | Electromagnetic relay and switching device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7990239B2 (en) * | 2009-05-08 | 2011-08-02 | M&Fc Holding, Llc | Electricity meter contact arrangement |
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2012
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2013
- 2013-04-13 WO PCT/CN2013/000431 patent/WO2013155870A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577433Y (en) * | 2002-10-19 | 2003-10-01 | 苏怀彬 | High-power electromagnetic relay |
| CN2798300Y (en) * | 2005-08-30 | 2006-07-19 | 张兴建 | Bidirectional full self locking relay |
| CN101335156A (en) * | 2007-06-29 | 2008-12-31 | 厦门宏发电声有限公司 | Magnet retaining relay |
| CN201397773Y (en) * | 2009-03-06 | 2010-02-03 | 上海亚银电器制造有限公司 | Magnetic latching relay |
| CN201886978U (en) * | 2010-12-18 | 2011-06-29 | 厦门宏发电力电器有限公司 | Magnetic hold relay with symmetric transmission type structure |
| CN202977311U (en) * | 2012-04-16 | 2013-06-05 | 泰科电子(深圳)有限公司 | Electromagnetic relay and switching device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013155870A1 (en) | 2013-10-24 |
| CN103377857A (en) | 2013-10-30 |
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