CN103377857A - Electromagnetic relay and switching device - Google Patents
Electromagnetic relay and switching device Download PDFInfo
- Publication number
- CN103377857A CN103377857A CN2012101109661A CN201210110966A CN103377857A CN 103377857 A CN103377857 A CN 103377857A CN 2012101109661 A CN2012101109661 A CN 2012101109661A CN 201210110966 A CN201210110966 A CN 201210110966A CN 103377857 A CN103377857 A CN 103377857A
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- Prior art keywords
- static load
- movable contact
- contact spring
- armature
- stream plate
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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 that is 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 movable movable contact spring that arranges of at least one end is provided with moving contact on the described movable contact spring; Described movable contact spring arranges at least the removable so that described moving contact of an end of moving contact and contacts with described fixed contact and can arrange dividually; It is characterized in that, be provided with magnetic conductive board between described static load stream plate and the described movable contact spring, described magnetic conductive board be arranged on the static load stream plate, on the movable contact spring or static load stream plate and movable contact spring between and do not flow the position that plate contacts with movable contact spring with static load; When described moving contact contacted making current with described fixed contact, described magnetic conductive board can reduce the Ampere force between described static load stream plate and the described movable contact spring.The present invention can reduce the impact of Ampere force, keeps 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
It is a kind of electric control device that magnetic keeps electromagnetic relay, and it has control system (claim not only input circuit) and by the interactive relationship between the control system (but also claiming output loop).Magnetic keeps electromagnetic relay generally to be comprised of iron core, coil, yoke, armature, permanent magnet, contact reed etc.Its operation principle is: add certain voltage at the coil two ends, the electric current that coil midstream is excessively certain, thus galvanomagnetic effect produced, and armature will move under the interaction force of electromagnetic force and permanent magnet, contact with fixed contact thereby drive moving contact, connect controlled circuit.Behind coil blackout, the suction of electromagnetism also disappears thereupon, thereby armature is adsorbed on the contacting state that remains on the yoke under the effect of permanent magnet.Coil midstream is crossed reverse current, and armature will counter motion under the interaction force of electromagnetic force and permanent magnet, disconnects with fixed contact thereby drive moving contact, disconnects and is controlled circuit.Cut off the power supply in the 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 little electric current, being controlled what pass through in the circuit is high voltage or large electric current.
It is to be applied in the intelligent electric meter that magnetic keeps a kind of typical use of electromagnetic relay.Intelligent electric meter keeps electromagnetic relay with magnetic, and requirement can be born 30 times of rated current in short-term.Wherein a kind of structure is, logical forward current in the solenoid makes the moving contact on the movable contact spring contact and connect by the control circuit with the fixed contact that static load flows on the plate.Solenoid leads to reverse current, fixed contact on moving contact and the static load stream plate on the movable contact spring is separated and disconnects by the control circuit.And static load flows when passing through electric current in plate and the movable contact spring, and 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 that acts on the other side, i.e. Ampere force.Ampere force is caused by Lorentz force.Can judge the electromagnetic field direction that the separately electric current in static load stream plate and the movable contact spring produces according to the right-hand rule.Can judge the direction of the Ampere force that static load stream plate and movable contact spring are subject to separately according to left hand rule.If static load stream plate is identical with the sense of current of movable contact spring, then that moving contact is contacted with fixed contact is tightr for both Ampere forces of being subject to.If the current opposite in direction of static load stream plate and movable contact spring, then both Ampere forces of being subject to have the trend that moving contact and fixed contact are separated.
For fear of the control of Ampere force obstruction to circuit, or adopt the static load stream plate structure identical with the movable contact spring sense of current; Adopt static load stream plate and movable contact spring current opposite in direction but only be applied to be controlled the less field of electric current in the circuit.And the intelligent electric meter that has, rated current reaches 80A, and short time current reached 30 times of rated current when it used.If rated current is large, when 30 times of rated current, the Ampere force that the static load of current opposite in direction stream plate and movable contact spring are subject to is enough to make moving contact to separate with fixed contact greater than the pressure between movable contact spring and static load stream plate so, cause relay contact to damage, the relay function forfeiture.Therefore, the structure of static load stream plate and movable contact spring current opposite in direction, its application is restricted.Yet the electromagnetic relay of the structure of static load stream plate and movable contact spring current opposite in direction has been applied in the field such as intelligent electric meter, and other parts have the design that adapts with it.In the situation that improves rated current, such as the redesign electromagnetic relay, then its repacking is difficult, cost is high, implements trouble.
Summary of the invention
One of purpose of the present invention is in order to overcome deficiency of the prior art, a kind of electromagnetic relay that reduces the Ampere force impact to be provided.
For realizing above purpose, the present invention is achieved through the following technical solutions:
Electromagnetic relay comprises: the static load stream plate that is 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; The movable movable contact spring that arranges of at least one end is provided with moving contact on the described movable contact spring; Described movable contact spring arranges at least the removable so that described moving contact of an end of moving contact and contacts with described fixed contact and can arrange dividually; It is characterized in that, be provided with magnetic conductive board between described static load stream plate and the described movable contact spring, described magnetic conductive board be arranged on the static load stream plate, on the movable contact spring or static load stream plate and movable contact spring between and do not flow the position that plate contacts with movable contact spring with static load; When described moving contact contacted making current with described fixed contact, described magnetic conductive board can reduce the Ampere force between described static load stream plate and the 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 the second end and described static load stream plate.
Preferably, to light the direction of direction extension with the movable contact spring automated contact of extension identical from stationary contact is set for described static load stream plate, when described moving contact contacted making current with described fixed contact, described static load stream plate and described movable contact spring were connected with the electric current of opposite direction.
Preferably, the width of described magnetic conductive board is 1/2nd to 1.5 times that described static load flows the 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, 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 the first paragraph; Described magnetic conductive board is arranged between fixed contact and the second end; Described magnetic conductive board is lighted extension from stationary contact length is more than or equal to the distance between moving contact and the 3rd section.
Preferably, described magnetic conductive board length is less than or equal to the distance between moving contact and the two or two section.
Preferably, described electromagnetic relay also comprises the end tab that is fixedly installed, and the second segment of described movable contact spring is fixedly connected on the end tab; The first paragraph that described movable contact spring arranges moving contact can and can flow the setting of plate ground away from static load 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 the described housing and first end is positioned at cavity volume, the second end is positioned at outside the cavity volume; Described movable contact spring is arranged in the cavity volume, and end tab is arranged on the housing, the end tab two ends lay respectively in the cavity volume and cavity volume outside; The end that movable contact spring does not arrange moving contact is connected with end tab; Be provided with electromagnetic assembly in the cavity volume; Electromagnetic assembly driving movable contact spring moves so that moving contact contacts with fixed contact and separates.
Preferably, described magnetic conductive board is the soft magnetic material plate.More preferably be that described magnetic conductive board is iron plate.
Two of purpose of the present invention is in order to overcome deficiency of the prior art, a kind of switching device that reduces the Ampere force impact to be provided.
For realizing above purpose, 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 that is 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 that fixed contact is set is positioned at cavity volume, and the second end that fixed contact is not set is positioned at outside the cavity volume; The movable movable contact spring that arranges of at least one end, the movable end of described movable contact spring is arranged in the cavity volume; The movable end of movable contact spring is provided with moving contact; The movable end of described movable contact spring moves and can make described moving contact contact with described fixed contact and can separate; Magnetic conductive board, described magnetic conductive board between described static load stream plate and described movable contact spring, described magnetic conductive board be arranged on the described static load stream plate, on the described movable contact spring or described static load stream plate and described movable contact spring between and do not flow the position that plate contacts with described movable contact spring with described static load; Driver part, described driver part and described movable contact spring are in transmission connection, and described driver part drives the movable end of described movable contact spring and moves so that described moving contact contacts with described fixed contact and separates.
Preferably, described driver part is electromagnetic drive.
Preferably, described electromagnetic drive comprises coil, iron core, yoke and armature; The described iron core setting of described coil encircling, 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 is subjected to the magnetic drive of described yoke and moves after described yoke produces magnetic; The armature of described motion drives the end that described movable contact spring arranges moving contact and moves.
Preferably, described yoke comprises L-type the first yoke and L-type the second yoke; The first end of described L-type the first yoke is connected with the first end of described iron core, and the first end of described L-type the second yoke is connected with the second end of described iron core; Described armature comprises the first armature, and described the first armature arranges rotationally; When described coil electricity, the two ends of described the first armature are subjected to respectively attraction and the repulsion of the second end of the second end of described L-type the first yoke and described L-type the second yoke.
Preferably, described armature also comprises the second armature, and the interlock of the first armature and the second armature arranges and has the gap between the two; In the gap of the second end of described L-type the first yoke between described the first armature and described the second armature; In the gap of the second end of described L-type the second yoke between described the first armature and described the second armature; When described coil electricity, described first armature of its both sides of two port of described L-type the first yoke is identical with the force direction of described the second armature, described first armature of its both sides of two port of described L-type the second yoke is identical with the force direction of described the second armature, and the second end of the second end of described L-type the first yoke and described L-type the second yoke is opposite to described the first armature force direction that is positioned at its same side, and the second end of the second end of described L-type the first yoke and described L-type the second yoke is opposite to described the second armature force direction that is positioned at its same side.
Preferably, described the first armature is opposite with described the second armature magnetic.
Preferably, described the first armature and described the second armature are arranged on the fixed mount; Be provided with pivot on the described fixed mount, described pivot is between described the first armature and described the second armature, and between the second end of the second end of described L-type the first yoke and described L-type the second yoke; Described pivot does not place in the described cavity volume rotationally; The end that described fixed mount and described movable contact spring arrange described moving contact is in transmission connection.
Preferably, also comprise a push pedal, be provided with chute in the described cavity volume; Described push pedal can be moved in described chute so that described push pedal only can make described moving contact close and mobile away from the direction of described fixed contact.
Preferably, described armature fixed mount is provided with push rod; The movable end of push pedal one end and described movable contact spring is connected, and the other end is connected with described push rod; Described push rod can drive at least one end of described movable contact spring by described push pedal and move.
Preferably, be provided with permanent magnet on the described fixed mount; Described the first armature and described the second armature are iron plate; Described the first armature and described the 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 the second end and described static load stream plate.
Preferably, described static load stream plate is identical from the direction that direction that described stationary contact lights extension and described movable contact spring light extension from described movable contact is set, when described moving contact contacted making current with described fixed contact, described static load stream plate and described movable contact spring were connected with the electric current of opposite direction.
Preferably, the width of described magnetic conductive board is 1/2nd to 1.5 times that described static load flows the 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, 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 the 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 the described second segment.
Preferably, described magnetic conductive board length is less than or equal to the distance between described moving contact and the described second segment.
Preferably, described electromagnetic relay also comprises the end tab that is fixedly installed, and the second segment of described movable contact spring is fixedly connected on the described end tab; The first paragraph that described movable contact spring arranges described moving contact can and can arrange away from described static load stream plate ground 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 the soft magnetic material plate.More preferably be that 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 the described cavity volume pivotly; Be provided with push rod on the described fixed mount, described push rod is in transmission connection by the movable end of push pedal and described movable contact spring; Described housing is provided with through hole; Described push rod passes housing and the one end is positioned at outside the cavity volume from described through hole; Described push rod can move in described through hole to drive at least one end of movable contact spring by push pedal and move.
Electromagnetic relay among 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 during 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 that transfers to static load stream plate, also can reduce the electromagnetic field intensity of the static load stream plate generation that transfers to movable contact spring, thereby has reduced the Ampere force to static load stream plate and movable contact spring.Reduced Ampere force, can guarantee that movable contact spring can remain that moving contact contacts with fixed contact.Even movable contact spring still can keep moving contact contact with fixed contact, prevents relay, switching device damage, brings into play the control function of relay, switching device by control circuit rated current greatly, 30 times in circuit is to rated current in short-term.
Electromagnetic relay among the present invention and switching device, simple in structure, can bear 30 times of short time currents to rated current.The present invention can reduce the impact of Ampere force, keep the safety of electromagnetic relay and switching device, both widened static load stream plate and the relay of the structure of movable contact spring current opposite in direction and the application of switching device, and avoided existing static load is flowed the relay of structure of plate and movable contact spring current opposite in direction and the large-scale redevelopment of switching device.
Description of drawings
Fig. 1 is that the magnetic among the present invention keeps the electromagnetic relay structural representation.
Fig. 2 is that the magnetic among the present invention keeps electromagnetic relay internal structure schematic diagram.
Fig. 3 is that the magnetic among the present invention keeps the electromagnetic relay cutaway view.
Fig. 4 is the structural representation of the magnetic among the present invention when keeping electromagnetic relay that movable member is not set.
Fig. 5 is the electromagnetic assembly cutaway view among the present invention.
Fig. 6 is the movable member structural representation among the present invention.
Fig. 7 is the movable member cutaway view among the present invention.
Fig. 8 is the switch block structural representation among the present invention.
Fig. 9 is the static load stream plate end view among the present invention.
Figure 10 is the movable contact spring structural representation among the present invention.
Figure 11 is that the magnetic among the present invention keeps electromagnetic relay first to use view.
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.Be provided with electromagnetic assembly shown in Figure 5 200, Fig. 6 and rotatable components 300 shown in Figure 7 and Fig. 8 in the cavity volume 120 to switch block 900 shown in Figure 10.
Such as Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, electromagnetic assembly comprises coil 210, iron core 220, L-type the first yoke 230 and L-type the second yoke 240.Coil 210 arranges around iron core 220, and itself and two contact pins (211,212) are electrically connected.Two contact pins (211,212) are fixedly installed on the housing 110.Two contact pins (211,212) can connect respectively power positive cathode, so that coil 210 interior generation currents.During coil 210 interior generation current, make iron core 220 produce magnetic, the first end 221 of iron core is opposite with the second end 222 magnetic.When being connected with current in opposite in the coil 210, first end 221 magnetic of iron core are opposite; The second end 222 magnetic of iron core are also opposite.The first end 231 of L-type the 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 the first yoke.The first end 241 of L-type the 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 the second yoke.
Such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 6 and shown in Figure 7, movable member 300 comprises fixed mount 310, permanent magnet 320, the first armature 330 and the second armature 340.Permanent magnet 320, the first armature 330 and the second armature 340 are fixed on the fixed mount 310.Has the gap between the first armature 330 and the second armature 340.As shown in Figure 7, the first armature 330 and the second armature 340 lay respectively at permanent magnet 320 right sides and left side.The first armature 330 and the second armature 340 are iron plate, both respectively with permanent magnet 320 about two end in contact.Therefore the first armature 330 and the second armature 340 have opposite magnetic.The second end 232 of L-type the first yoke is between the first armature 330 and the second armature 340, the second end 242 of L-type the second yoke and has the gap between the second end 242 of the second end 232 of L-type the first yoke and L-type and yoke, lays respectively at the up and down both sides of permanent magnet 320 between the first armature 330 and the second armature 340.Be provided with two pivots 311 (shown in the figure one) on the fixed mount 310, one of them pivot 311 is inserted in the installing hole 121 in the cavity volume 120 rotationally.Pivot 311 is between the first armature 330 and the second armature 340, and in the second end 232 of L-type the first yoke and L-type and between the second end 242 of yoke.Fixed mount 310 can pivot around two pivots 311.Be provided with push rod 312 on the fixed mount 310.Be provided with through hole 111 on the housing 110.Push rod 312 passes housing 110 from through hole 111, and its end is positioned at outside the cavity volume 120, and push rod 312 can be in through hole 111 interior movements.When pivot 311 pivoted, push rod 312 was in through hole 111 interior swings at fixed mount 310.
Also be provided with drive disk assembly in the cavity volume 120, drive disk assembly is push pedal 400.The first end 401 of push pedal is connected with push rod 312.Be provided with chute 122 in the cavity volume 120.Push pedal 400 is arranged in the chute 122 movably.Chute 122 is used for the direction of motion of restriction push pedal 400.When push rod 312 swings, drive push pedal 400 move left and right.
Such as Fig. 2, Fig. 3, Fig. 8, Fig. 9 and shown in 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 the housing 110.Static load stream plate 500 1 ends are positioned at cavity volume 120, and the other end is positioned at outside the cavity volume 120.The end that static load stream plate 500 is positioned at cavity volume 120 is provided with circular fixed contact 510.
Movable contact spring 700 is arranged in the cavity volume 120.The first end 701 of movable contact spring is connected with push pedal 400.During push pedal 400 move left and right, can drive first end 701 move left and right of movable contact spring.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 all are oppositely arranged with static load stream plate 500, and parallel with static load stream plate 500.The first paragraph 710 of movable contact spring flows the distance of plate 500 less than the distance of second segment 720 with static load stream plate 500 with static load.The first paragraph 710 of movable contact spring is connected by the 3rd section 730 with second segment 720.The second end 702 of movable contact spring is connected with end tab 600.Movable contact spring 700 has certain elasticity, so that it is in the fixing situation of the second end 702, first end 701 can be subjected to push pedal 400 to drive and move.Be provided with circular moving contact 740 on the first paragraph 710.Distance between moving contact 740 and the 3rd section 730 is L1.The 3rd section 730 vertical length is L3, that is to say that the distance between first paragraph 710 and the second segment 720 is L3.Moving contact 740 is oppositely arranged with fixed contact about 510.When the first end 701 that drives movable contact springs in push pedal 400 moved, the first end 701 of moving contact 740 servo-actuated reeds moved and moves to fixed contact 510 contacts or separate.
Be provided with magnetic conductive board 800 between static load stream plate 500 and the movable contact spring 700.The iron plate of magnetic conductive board 800 for having magnetic conductivity.Magnetic conductive board 800 is fixedly installed on the static load stream plate 500.Magnetic conductive board 800 width are identical with static load stream plate 500 width.The length of magnetic conductive board 800 is L2.L2 is greater than L1, but less than L1 and L3 sum.Magnetic conductive board 800 has arc notch 801, and the part of fixed contact 510 is positioned at arc notch 801.
Magnetic conductive board 800 among 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.It is tabular that magnetic conductive board 800 among the present invention can adopt soft magnetic material to make.
Upper and lower, left and right among the present invention are relative concept.
Magnetic among the present invention keeps the 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 opposite.The lower end of the first armature 330 is adjacent to L-type the second yoke 240, the second armature 340 because of magnetic attraction upper end is adjacent to L-type the first yoke 230 because of magnetic attraction.At this moment, 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, makes moving contact 740 and fixed contact 510 be in released state and distance farthest.Switch block 900 is in off-state.
Use on the basis of state first, after 210 energisings of the first armature coil, L-type the first yoke 230 and L-type the second yoke 240 all produce magnetic.The magnetic of L-type the first yoke 230 is opposite with the first armature 330 magnetic, and is same with the second armature 340 Magnetic Phases.The magnetic of L-type the second yoke 240 and the first armature 330 Magnetic Phases are together, and are opposite 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 the first yoke 230, and the lower end of the first armature is subject to L-type the 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 the first yoke 230, and the lower end of the second armature is subject to L-type the second yoke 240 attraction to the right.Under the effect of magnetic force, fixed mount 310 pivots counterclockwise around pivot 311, until the upper end of the first armature 330 and L-type the first yoke 230 are adjacent to, lower end and L-type second yoke 240 of the first armature 330 are adjacent to.When fixed mount 310 was rotated counterclockwise, push rod 312 was moved to the left.By the transmission of push pedal 400, the first end 701 that push rod 312 drives movable contact spring is moved to the left, and moving contact 710 reduces with the distance of fixed contact 510.
Continue the electric current in the hold-in winding 210, L-type the first yoke 230 and L-type the second yoke 240 continue the force direction of the first armature 330 and the second armature 340 is remained unchanged.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 the first yoke 230, the second armature 340 because of magnetic attraction lower end is adjacent to L-type the second yoke 240 because of magnetic attraction.At this moment, push rod 312 moves to the high order end of through hole 111.By the transmission of push pedal 400, the first end 701 that push rod 312 drives movable contact spring is moved to the left moving contact 710 and contacts with fixed contact 510.When moving contact 710 contacted with fixed contact 510, switch block 900 was in closure state, and it can form current path.Utilize the electro permanent magnetic of electromagnetic assembly, can make moving contact 710 and fixed contact 510 remain on contact condition, switch block 900 is in closure state all the time.Even coil 210 cuts off the power supply at this moment, 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 the first yoke 230 and L-type the second yoke 240, thereby remain on state shown in Figure 2.
Such as need cut-off switch parts 900, only need in coil 310, to pass into rightabout electric current.The opposite direction when force direction of L-type the first yoke 230 and 240 pairs of the first armature 330 of L-type the second yoke all uses state with second.The force direction of L-type the first yoke 230 and 240 pairs of the second armature 340 of L-type the second yoke is all opposite when second uses state.Therefore fixed mount 310 is clockwise to the first state shown in Figure 11, and moving contact 710 separates with fixed contact 510.This moment, switch block 900 was in off-state, with circuitry cuts.
Because the jack position of socket determines that the static load stream plate and the end tab distance that are positioned at outside the cavity volume 120 are determined.For reduce between moving contact 710 and the fixed contact 510 contact angle, contact area when both are contacted is larger, the first paragraph 710 of the movable contact spring 710 among the present invention is nearer apart from static load stream plate 500 with respect to second segment 720.Therefore, the Ampere force between the first paragraph 710 of static load stream plate 500 and movable contact spring 700 is larger.During to rated current, its Ampere force can surpass the thrust of 200 pairs of movable contact springs 700 of electromagnetic assembly 30 times of transient currents, moving contact 710 and fixed contact 510 are separated, thus the cut-out circuit.This situation belongs to the fault that magnetic keeps electromagnetic relay, does not meet instructions for use.Between static load flow 500 and movable contact spring 700, magnetic conductive board 800 is set among the present invention, can play guide function to the electromagnetism of static load flow 500 or movable contact spring 700, reduce the electromagnetism of crossing magnetic conductive board 800, thereby reduce the Ampere force between static load stream plate 500 and the movable contact spring 700.Magnetic conductive board 800 width are identical with static load stream plate 500 width, and maximizing reduces the impact of Ampere force.Because the Ampere force between the first paragraph 710 of static load stream plate 500 and movable contact spring is maximum, therefore, the length of magnetic conductive board 800 covers both fully impacts of Ampere force of length of the first paragraph between moving contact 710 and the 3rd section 730, and the while is also saved material.Push rod among the present invention stretches out outside the cavity volume, and when electromagnetic assembly broke down, disconnection and closure that can the hand control switch parts be used safer.
Embodiment among the present invention only is used for that the present invention will be described, does not consist of the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in protection range of the present invention.
Claims (36)
1. electromagnetic relay comprises:
The static load stream plate that is 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 movable movable contact spring that arranges of at least one end is provided with moving contact on the described movable contact spring; Described movable contact spring arranges at least the removable so that described moving contact of an end of moving contact and contacts with described fixed contact and can arrange dividually;
It is characterized in that, be provided with magnetic conductive board between described static load stream plate and the described movable contact spring, described magnetic conductive board be arranged on the static load stream plate, on the movable contact spring or static load stream plate and movable contact spring between and do not flow the position that plate contacts with movable contact spring with static load;
When described moving contact contacted making current with described fixed contact, described magnetic conductive board can reduce the Ampere force between described static load stream plate and the 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 the second end and described static load stream plate.
3. electromagnetic relay according to claim 1, it is characterized in that, to light the direction of direction extension with the movable contact spring automated contact of extension identical from stationary contact is set for described static load stream plate, when described moving contact contacted making current with described fixed contact, described static load stream plate and described movable contact spring were connected with the electric current of opposite direction.
4. electromagnetic relay according to claim 1 is characterized in that, the width of described magnetic conductive board is 1/2nd to 1.5 times of described static load stream plate width.
5. electromagnetic relay according to claim 4 is characterized in that, the width of described magnetic conductive board is identical with the width of described static load stream plate.
6. electromagnetic relay according to claim 4 is characterized in that, the width of described magnetic conductive board flows 1.5 times of plate width greater than the width of described static load stream plate, less than static load.
7. 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 the first paragraph; Described magnetic conductive board is arranged between fixed contact and the second end; Described magnetic conductive board is lighted extension from stationary contact length is more than or equal to the distance between moving contact and the 3rd section.
8. electromagnetic relay according to claim 7 is characterized in that, described magnetic conductive board length is less than or equal to the distance between moving contact and the second segment.
9. electromagnetic relay according to claim 7 is characterized in that, described electromagnetic relay also comprises the end tab that is fixedly installed, and the second segment of described movable contact spring is fixedly connected on the end tab; The first paragraph that described movable contact spring arranges moving contact can and can flow the setting of plate ground away from static load near static load stream plate; Described end tab and static load stream plate form two leading-out terminals of switch.
10. 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.
11. according to the described electromagnetic relay of any one among the claims 1-10, it is characterized in that described electromagnetic relay also comprises housing, described housing is provided with cavity volume; Described static load stream plate is arranged on the described housing and first end is positioned at cavity volume, the second end is positioned at outside the cavity volume; Described movable contact spring is arranged in the cavity volume, and end tab is arranged on the housing, the end tab two ends lay respectively in the cavity volume and cavity volume outside; The end that movable contact spring does not arrange moving contact is connected with end tab; Be provided with electromagnetic assembly in the cavity volume; Electromagnetic assembly driving movable contact spring moves so that moving contact contacts with fixed contact and separates.
12. electromagnetic relay according to claim 1 is characterized in that, described magnetic conductive board is the soft magnetic material plate.
13. electromagnetic relay according to claim 12 is characterized in that, described magnetic conductive board is iron plate.
14. switching device is characterized in that, comprising:
Housing, described housing is provided with cavity volume;
The static load stream plate that is 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 that fixed contact is set is positioned at cavity volume, and the second end that fixed contact is not set is positioned at outside the cavity volume;
The movable movable contact spring that arranges of at least one end, the movable end of described movable contact spring is arranged in the cavity volume; The movable end of movable contact spring is provided with moving contact; The movable end of described movable contact spring moves and can make described moving contact contact with described fixed contact and can separate;
Magnetic conductive board, described magnetic conductive board between described static load stream plate and described movable contact spring, described magnetic conductive board be arranged on the described static load stream plate, on the described movable contact spring or described static load stream plate and described movable contact spring between and do not flow the position that plate contacts with described movable contact spring with described static load;
Driver part, described driver part and described movable contact spring are in transmission connection, and described driver part drives the movable end of described movable contact spring and moves so that described moving contact contacts with described fixed contact and separates.
15. switching device according to claim 14 is characterized in that, described driver part is electromagnetic drive.
16. switching device according to claim 15 is characterized in that, described electromagnetic drive comprises coil, iron core, yoke and armature; The described iron core setting of described coil encircling, 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 is subjected to the magnetic drive of described yoke and moves after described yoke produces magnetic; The armature of described motion drives the end that described movable contact spring arranges moving contact and moves.
17. switching device according to claim 16 is characterized in that, described yoke comprises L-type the first yoke and L-type the second yoke; The first end of described L-type the first yoke is connected with the first end of described iron core, and the first end of described L-type the second yoke is connected with the second end of described iron core; Described armature comprises the first armature, and described the first armature arranges rotationally; When described coil electricity, the two ends of described the first armature are subjected to respectively attraction and the repulsion of the second end of the second end of described L-type the first yoke and described L-type the second yoke.
18. switching device according to claim 17 is characterized in that, described armature also comprises the second armature, and the interlock of the first armature and the second armature arranges and has the gap between the two; In the gap of the second end of described L-type the first yoke between described the first armature and described the second armature; In the gap of the second end of described L-type the second yoke between described the first armature and described the second armature; When described coil electricity, described first armature of its both sides of two port of described L-type the first yoke is identical with the force direction of described the second armature, described first armature of its both sides of two port of described L-type the second yoke is identical with the force direction of described the second armature, and the second end of the second end of described L-type the first yoke and described L-type the second yoke is opposite to described the first armature force direction that is positioned at its same side, and the second end of the second end of described L-type the first yoke and described L-type the second yoke is opposite to described the second armature force direction that is positioned at its same side.
19. switching device according to claim 18 is characterized in that, described the first armature is opposite with described the second armature magnetic.
20. switching device according to claim 18 is characterized in that, described the first armature and described the second armature are arranged on the fixed mount; Be provided with pivot on the described fixed mount, described pivot is between described the first armature and described the second armature, and between the second end of the second end of described L-type the first yoke and described L-type the second yoke; Described pivot is arranged in the described cavity volume rotationally; The end that described fixed mount and described movable contact spring arrange described moving contact is in transmission connection.
21. switching device according to claim 20 is characterized in that, also comprises a push pedal, is provided with chute in the described cavity volume; Described push pedal can be moved in described chute so that described push pedal only can make described moving contact close and mobile away from the direction of described fixed contact.
22. switching device according to claim 21 is characterized in that, described armature fixed mount is provided with push rod; The movable end of push pedal one end and described movable contact spring is connected, and the other end is connected with described push rod; Described push rod can drive at least one end of described movable contact spring by described push pedal and move.
23. switching device according to claim 22 is characterized in that, is provided with permanent magnet on the described fixed mount; Described the first armature and described the second armature are iron plate; Described the first armature and described the second armature respectively with two end in contact of described permanent magnet.
24. switching device according to claim 14 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 the second end and described static load stream plate.
25. switching device according to claim 14, it is characterized in that, described static load stream plate is identical from the direction that direction that described stationary contact lights extension and described movable contact spring light extension from described movable contact is set, when described moving contact contacted making current with described fixed contact, described static load stream plate and described movable contact spring were connected with the electric current of opposite direction.
26. switching device according to claim 14 is characterized in that, the width of described magnetic conductive board is 1/2nd to 1.5 times of described static load stream plate width.
27. switching device according to claim 26 is characterized in that, the width of described magnetic conductive board is identical with the width of described static load stream plate.
28. switching device according to claim 26 is characterized in that, the width of described magnetic conductive board flows 1.5 times of plate width greater than the width of described static load stream plate, less than static load.
29. switching device according to claim 14 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 the 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 the described second segment.
30. switching device according to claim 29 is characterized in that, described magnetic conductive board length is less than or equal to the distance between described moving contact and the described second segment.
31. switching device according to claim 30 is characterized in that, described electromagnetic relay also comprises the end tab that is fixedly installed, and the second segment of described movable contact spring is fixedly connected on the described end tab; The first paragraph that described movable contact spring arranges described moving contact can and can arrange away from described static load stream plate ground near described static load stream plate; Described end tab and described static load stream plate form two leading-out terminals of described switching device.
32. switching device according to claim 14 is characterized in that, on the Width of described static load stream plate, the width of described magnetic conductive board is constant.
33. switching device according to claim 14 is characterized in that, described magnetic conductive board is the soft magnetic material plate.
34. switching device according to claim 33 is characterized in that, described magnetic conductive board is iron plate.
35. switching device according to claim 14 is characterized in that, described switching device is that magnetic keeps electromagnetic relay.
36. switching device according to claim 14 is characterized in that, described driver part comprises fixed mount, and described fixed mount is arranged in the described cavity volume pivotly; Be provided with push rod on the described fixed mount, described push rod is in transmission connection by the movable end of push pedal and described movable contact spring; Described housing is provided with through hole; Described push rod passes housing and the one end is positioned at outside the cavity volume from described through hole; Described push rod can move in described through hole to drive at least one end of movable contact spring by push pedal and move.
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 true CN103377857A (en) | 2013-10-30 |
| CN103377857B 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) |
Cited By (2)
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|---|---|---|---|---|
| CN107644785A (en) * | 2017-10-12 | 2018-01-30 | 三友联众集团股份有限公司 | A kind of Improvement type moves spring relay |
| 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 |
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| CN2798300Y (en) * | 2005-08-30 | 2006-07-19 | 张兴建 | Bidirectional full self locking relay |
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| 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 |
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| CN107644785B (en) * | 2017-10-12 | 2020-04-21 | 三友联众集团股份有限公司 | Improved moving spring relay |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013155870A1 (en) | 2013-10-24 |
| CN103377857B (en) | 2016-01-13 |
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