CN104091725B - Large current magnetic holding relay and movable contact spring thereof, contact assembly - Google Patents
Large current magnetic holding relay and movable contact spring thereof, contact assembly Download PDFInfo
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- CN104091725B CN104091725B CN201410365699.1A CN201410365699A CN104091725B CN 104091725 B CN104091725 B CN 104091725B CN 201410365699 A CN201410365699 A CN 201410365699A CN 104091725 B CN104091725 B CN 104091725B
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Abstract
The invention provides a kind of large current magnetic holding relay and movable contact spring thereof, contact assembly, relay comprises contact assembly, electromagnetic assembly, armature component and push card, with the magnetic effect of permanent-magnet steel in described armature component, make contact assembly keep normally open or normally off; The conversion of its normally open or normally off relies on pulse electrical signal to trigger, and makes described electromagnetic assembly drive described armature component to drive described push card displacement, makes described contact assembly transition status by described push card displacement. Its movable contact spring is made up of elastic conducting material, on described movable contact spring, be fixed with at least two movable contacts, described movable contact spring has the second end that fixing first end and can elastics wing, described movable contact is fixed on described the second end, between described at least two movable contacts, is electrically connected by described movable contact spring; The second end of described movable contact spring is driven by a push card and swings.
Description
Technical field
The present invention relates to a kind of large current magnetic holding relay, especially a kind of brand-new double contact structureLarge current magnetic holding relay and movable contact spring thereof, contact assembly.
Background technology
Magnetic latching relay is the new type of relay growing up in recent years, is a kind of automatic switch. PassSystem electromagnetic relay only plays a part automatic connection and cut-out to circuit, and often the opening of magnetic latching relayState or normally off rely on permanent-magnet steel effect completely, and the conversion of its on off state relies on has a fixed widthThe pulse electrical signal of degree triggers and completes. In the time that the contact of relay need to be opened or close state, (connect or cutWhen disconnected load), only need with positive and negative pulse voltage excitation coil, relay just completed and has opened and close shape in momentThe conversion of state. Conventionally contact is in the time of hold mode, and coil does not need to continue energising, dependence permanent-magnet steelThe state that magnetic force just can maintain relay is constant. Magnetic latching relay is widely used inA kind of Reliability of Microprocessor is high, power switched large, the green components and parts of energy-conserving and environment-protective.
The large current magnetic holding relay below inquired into, refers to that load voltage is more than 277V, orMagnetic latching relay product more than electric current 20A.
As shown in Figure 1, the functional component of existing double-contact electromagnetic relay comprises electromagnetic assembly 9, armatureAssembly 8, push card 7 and contact assembly 6, with the magnetic effect of armature component 8 interior permanent-magnet steels, canMake contact assembly 6 keep normally open or normally off; The conversion of its normally open or normally off canRely on the external pulse signal of telecommunication to trigger, so can utilize electromagnetic assembly 9 to drive armature component 8 to be withMoving push card 7 displacements, make contact assembly 6 change normally open or normally closed shape by the displacement of push card 7State.
Electromagnetic system 9 comprises that bobbin 91, coil 92, multiple coil connect electric pin 93, the first yoke 94And second yoke 95, form C shape Electromagnetic Drive structure. Armature component 8 comprises injection-moulded housing 81, flatTwo armature plates 82, permanent-magnet steel and the armature arm 83 of row, armature component 8 can be reciprocal around a rotating shaftRotate. When relay contact closure work, electromagnetic system 9 drives push card 7 to make it with armature component 8Produce the motive force acting on contact assembly 6.
Please refer to Fig. 1, Fig. 2, existing double-contact contact system 6 comprises that the first lead-out tablet 61, two are quietContact 62, the second lead-out tablet 63, two movable contacts 64 and movable contact spring 65, the first lead-out tablets 61,Two lead-out tablets 63 and movable contact spring 65 process by stamping-out. The first lead-out tablet 61 have exit withAnd link, the first lead-out tablet 61 links and stationary contact 62 are riveted together; The second lead-out tablet 63Have exit and link, the second lead-out tablet 63 links and movable contact spring 65 first ends are riveted onTogether. Movable contact spring 65 can be made up of single or multiple reeds. And by movable contact spring 65 movable ends and movable contact64 are riveted together, and make the second lead-out tablet 63 for can not moving-conductor, and movable contact spring 65 is can moving-conductor.Push card 7 one end are connected in movable contact spring 65, and the other end is promoted by armature arm 83.
Electromagnetic system 9 drives push card 7 that it is produced with armature component 8 and acts on movable contact spring 65Motive force, so that two movable contacts 64 contact or separate with two stationary contacts 62, such the first lead-out tablet61 and second lead-out tablet 63 can be switched on or switched off by movable contact spring 65.
As shown in Figure 2, existing this double-contact contact system, its electric current successively by the first lead-out tablet 61,Two stationary contacts 62, two movable contacts 64, movable contact spring 65 and the second lead-out tablets 63, electric current is at relayInner meeting forms a larger loop, and because double contact structure has again current distributing, this is continuingIn electrical equipment, can form interfere with electromagnetic field in a big way, this interfere with electromagnetic field can have influence on contiguous precisionCircuit block, while being used for intelligent electric meter such as magnetic latching relay, the induced electricity that interfere with electromagnetic field producesFail to be convened for lack of a quorum and directly affect the accuracy of intelligent electric meter detection numerical value.
In addition, this traditional double-contact pattern, except improving product load capacity, is touched productBetween some gap, contact, dielectric withstanding voltage performance there is no lifting. Meanwhile, movable contact spring be arranged in two lead-out tablets itBetween, amplitude of fluctuation is subject to larger restriction, has also just limited the gap between sound contact.
Summary of the invention
The object of the invention is to improve the deficiency of existing double contact structure, a kind of brand-new double-contact is providedThe large current magnetic holding relay of structure and movable contact spring thereof, contact assembly, not only can improve product greatlyLoad capacity, simultaneously can promote at double dielectric withstanding voltage level between contactor gap and contact; It is modern relayThe development trend of device.
Object of the present invention realizes like this: a kind of large current magnetic holding relay is provided, comprises contact groupPart, electromagnetic assembly, armature component and push card, do with the magnetic of permanent-magnet steel in described armature componentWith, make contact assembly keep normally open or normally off; The conversion of its normally open or normally off is complied withTrigger by pulse electrical signal, make described electromagnetic assembly drive described armature component to drive described push card displacement,Make described contact assembly transition status by described push card displacement;
Described contact assembly comprises at least two lead-out tablets, at least two stationary contacts, at least two movable contactsAn and movable contact spring; Described stationary contact is individually fixed in described lead-out tablet, and described two lead-out tablets are all positioned at instituteState movable contact spring the same side; Described movable contact spring has the second end that fixing first end and can elastics wingPortion, described movable contact is fixed on described the second end, between described at least two movable contacts, moves by describedReed is electrically connected, described at least two movable contacts and between described movable contact spring part composition connect electric bridge;The second end of described movable contact spring connects described push card, and described push card is connected in described rank with the other endIron component, the corresponding described stationary contact in position of described movable contact;
Drive movable contact on described movable contact spring the second end to swing by described push card displacement, make instituteState movable contact with described stationary contact contact or separate, between described at least two lead-out tablets, passing through described movable contactDescribed movable contact spring between point and movable contact is switched on or switched off.
According to above-mentioned design, described movable contact spring first end is fixed on a stator, and described stator is solidDue to described casing of relay.
According to above-mentioned design, on the second end of described movable contact spring, form at least one reinforcement, described in addStrong muscle between described movable contact and described push card junction, the length direction of described reinforcement and instituteState movable contact spring length direction consistent.
According to above-mentioned design, described movable contact spring the second end has outside breakaway-element slit along the length direction,By fixing described movable contact spring the second end each movable contact part, separate with described slit whereby.
According to above-mentioned design, described movable contact spring forms a U-bend folding near described first end; Described UShape bending wrap direction is perpendicular to described movable contact spring length direction.
According to above-mentioned design, described movable contact spring comprises multiple superimposed reeds, and described movable contact spring is at the second endEach lamellar body of portion forms Y shape opening, described Y shape A/F and described push card to both sides bending respectivelyPush-and-pull direction is consistent.
According to above-mentioned design, described movable contact spring comprises the first reed, the second reed and the 3rd reed; DescribedThe described movable contact of the second end adjacency of the first reed, the contiguous described armature component of described the 3rd reed, instituteState the second reed between described the first reed and the 3rd reed; Described a 3rd reed part is to describedArmature component direction tilts.
According to above-mentioned design, described at least two lead-out tablets are divided into access lead-out tablet and output lead-out tablet, instituteState access described dynamic and static contact corresponding to lead-out tablet, corresponding with described output lead-out tablet is described dynamic and staticContact position is staggeredly arranged.
According to above-mentioned design, described contact assembly, electromagnetic assembly, armature component and push card are installed onIn one housing, described housing comprises base and upper cover, described base and on cover corresponding described movable contact withStationary contact contact or the position separating, be respectively fitted with ceramic part, and described ceramic part is attached near contactNearly arcing position.
According to above-mentioned design, the direction that described push card disconnects in contact, push card contacts with movable contact springPosition is ceramic structure.
According to above-mentioned design, described armature component comprises permanent-magnet steel, armature plate and armature arm, described electricityDescribed in magnetic Component driver, armature component rotates, thereby promotes described push card with the swing of described armature armDisplacement; Described armature arm is slided group in described push card, and logical between described armature arm and described push cardCrossing elastic component connects.
The embodiment of the present invention provides a kind of movable contact spring of large current magnetic holding relay on the other hand, by elasticityConductive material is made, and is fixed with at least two movable contacts on described movable contact spring, and described movable contact spring has fixingFirst end and can elastics wing the second end, described movable contact is fixed on described the second end,Between described at least two movable contacts, be electrically connected by described movable contact spring; The second end of described movable contact springPortion is driven by a push card and swings.
The one side embodiment of the present invention provides a kind of movable contact spring of large current magnetic holding relay again, by elasticityMaterial is made, and is fixed with at least two movable contacts on described movable contact spring, and described movable contact spring has fixingOne end and one can elastics wing the second end, described movable contact is fixed on described the second end, described inBetween at least two movable contacts, be electrically connected by conductive material; The second end of described movable contact spring is subject to onePush card drives and swings.
The another aspect embodiment of the present invention provides a kind of contact assembly of large current magnetic holding relay, described inContact assembly comprises at least two lead-out tablets, at least two stationary contacts, at least two movable contacts and a moving springSheet; Described stationary contact is individually fixed in described lead-out tablet, and described two lead-out tablets are all positioned at described movable contact springThe same side; Described movable contact spring has the second end that fixing first end and can elastics wing, described inMovable contact is fixed on described the second end, between described at least two movable contacts by described movable contact spring or leadElectric material is electrically connected, described at least two movable contacts and between described movable contact spring or conductive material portionBe grouped into and connect electric bridge; The second end of described movable contact spring connects a push card, and described push card is with the other endBe connected in the armature component of relay, the corresponding described stationary contact in position of described movable contact; Push away by describedOn the moving described movable contact spring the second end of moving screens shipper pole, movable contact swings, make described movable contact with described inStationary contact contact or separation, pass through between described movable contact and movable contact between described at least two lead-out tabletsDescribed movable contact spring be switched on or switched off.
The above embodiment of the present invention is with respect to the beneficial effect of prior art,
1, compare existing double contact structure, old double contact structure circuit is on contactParallel connection, is a point electric current for each group of contact, comes for the electromagnetic relay structure of this inventive embodimentsSay, be series connection circuit on contact, respectively organizes contact load sharing voltage, for whole circuit,The contact of new construction is equivalent to into multiple and has increased dielectric withstanding voltage between the contactor gap of original structure and contactProperty. Meanwhile, two groups of contacts synchronously disconnect, and respectively organize contact load sharing voltage, and this can significantly reduce electric arcFormation. The experiment proved that, in above-described embodiment, contact resistance to pressure becomes multiple to increase with service life.
2, double contact structure in the embodiment of the present invention, compares the contact structure of same bridge architecture,The pushing structure of conventional bridge architecture contact is all Direct Action Type, and the present invention is revolving, has knotStructure is simple, and the effect that stability is high has directly reduced product cost, and has promoted the withstand voltage scope of product.
3, the way of propelling of the present invention is double flexible drive, and resilient spring and movable contact spring coordinate,Operation stability while cooperation between can lifting piece, improving product durability.
4, push card structure in the embodiment of the present invention, push card structure compared to existing technology, for example specialChinese utility model patent (the being called for short 05 year patent below) institute that profit application number is 200510052291.XThe disclosed way of propelling, the way of propelling of 05 year patent is that armature component drives push card, push card drivesSpring, spring promotes movable contact spring again, the last closing of contact; Armature component drives push card, promotes cassette tapeThe spring of moving, spring drives movable contact spring, and last contact disconnects, and this mode spring directly contacts with movable contact spring.The way of propelling of the embodiment of the present invention is that armature component promotes spring, spring promotion push card, push cardDrive movable contact spring action (closed and disconnected). Spring does not directly contact with movable contact spring, and the effect reaching is:Both utilize the flexibility of spring, avoided again spring and the high load capacity loop Long Term Contact band of 05 year patent structureThe product failure coming.
5,, when existing contact assembly disconnects in contact, have electric arc and produce, and in the embodiment of the present invention,The position disconnecting in contact, the position that push card contacts with movable contact spring is ceramic structure, increases the exhausted of structureEdge performance and arc extinguishing ability.
6, between two lead-out tablets, can connect by the movable contact spring between two movable contacts or conductive material,In relay, only have an extremely short current loop, thus the intensity of disturbing magnetic field and scope all with respect toExisting structure is less, has reduced the interference to peripheral equipment.
7, ceramic material can by the assembling of integrated injection molding, tight fit or by the adhesives such as resin with mouldMaterial material is fixed together. With respect to full ceramic structure, in the embodiment of the present invention, composite structure plasticity moreGood; With respect to pure plastic construction, the resistance to electric arc of composite structure, heat resistance and blow-out in the embodiment of the present inventionPerformance is better.
8, in the present invention, two lead-out tablets are all positioned at movable contact spring the same side, like this, and with respect to existing skillArt movable contact spring is positioned at two situations between lead-out tablet, and the adjustable clearance scope of sound contact improves greatly, carriesRise application range of products. And connect because the embodiment of the present invention is bridge-type electric current, two are accessed and drawnThe gap of the stationary contact going out is divided for two parts, and actual is to have promoted at double gap, improving product load energyPower.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of prior art double-contact magnetic latching relay.
Fig. 2 is that the electric current of prior art double-contact magnetic latching relay passes through schematic diagram.
Fig. 3 is the structural representation of the magnetic latching relay of the embodiment of the present invention.
Fig. 4 is the drive disk assembly structural representation of the magnetic latching relay of the embodiment of the present invention.
Fig. 5 is another visual angle structural representation of drive disk assembly of the magnetic latching relay of the embodiment of the present invention.
Fig. 6 is push card structural representation in the embodiment of the present invention.
Fig. 7 is contact system structural representation in the embodiment of the present invention.
Detailed description of the invention
The exemplary embodiments that embodies feature & benefits of the present invention will describe in detail in the following description. Ying LiWhat separate is that the present invention can have various variations on different embodiment, and it neither departs from of the present inventionScope, and explanation wherein and to be shown in be the use when explaining in essence, but not in order to limit the present invention.
The orientation such as upper and lower, the top mentioned in the present invention, the end, only for illustrating the phase contraposition between each partsPut relation, do not limit the concrete installation position of each parts in the present invention.
The embodiment of the present invention provides a kind of large current magnetic holding relay, with reference to Fig. 3, Fig. 4 and Fig. 5, continuesElectrical equipment mainly comprises contact assembly 1, electromagnetic assembly 2, armature component 3 and push card 4, these partsAll be installed in housing 5, housing 5 can comprise base 51 and upper cover (not shown, encapsulation is used). Can be withThe magnetic effect of armature component 3 interior permanent-magnet steels, makes contact assembly 1 keep normally open or normally off;The conversion of its normally open or normally off relies on pulse electrical signal to trigger, and makes electromagnetic assembly 2 drive armatureAssembly 3 drives push card 4 displacements, by push card 4 displacements, contact assembly 1 conversion is switched on or switched offState.
As shown in Figure 3, Figure 4, the present embodiment contact assembly 1 comprise two spaced lead-out tablets 11,Two stationary contacts 12, two movable contacts 13 and movable contact springs 14. Stationary contact 12 is riveted and is fixed on two respectively11, two lead-out tablets 11 of individual lead-out tablet are all positioned at movable contact spring 14 the same sides, two lead-out tablet 11 rear sidesAlso can fix respectively a binding post 16, for circumscripted power line. Movable contact spring 14 has fixingOne end 141 and one can elastics wing the second end 142, movable contact 13 can be riveted and is fixed on the second endBetween 142, two movable contacts 13 of portion, can be electrically connected by movable contact spring 14 or other conductive material.The second end 142 of movable contact spring can link with the front end of push card 4, and push card 4 is connected in rank with rear endIron component 3.
As shown in Figure 4, movable contact spring 14 first ends 141 can be riveted and are fixed on a stator 15, GuStator 15 can be a metallic plate, and stator 15 can be fixed in base 51 by setting-in. Movable contact spring 14 can wrapDraw together multiple superimposed reeds, specifically comprise the first reed 145, the second reed 146 and the 3rd reed 147.The second end 142 of the first reed 145 is close to armature components 3 in abutting connection with movable contact 13, the three reeds 147,The second reed 146 is between the first reed 145 and the 3rd reed 147. The first reed 145 is towards drawingSlice 11 direction parts are bent to form an end, location 1451. The 3rd reed 147 is wherein a part of to rankIron component 3 directions are formed slopely shell fragment 1471, and whereby, movable contact spring 14 is at each of the second end 142Body forms Y shape opening to both sides bending respectively, and Y shape A/F is consistent with push card push-and-pull direction. MovingReed 14 forms a U-bend folding 148 near first end 141; It is vertical that U-bend is rolled over 148 wrap directionIn movable contact spring 14 length directions.
As shown in Figure 7, on the second end 142 of movable contact spring 14, form at least one reinforcement 143, addStrong muscle 143 can be formed on the first reed 145, reinforcement 143 also can be stacked at the first reed 145 andOn the second reed 146, also can be stacked at the first reed 145, the second reed 146 and the 3rd reed 147Upper, to strengthen the rigidity of the second end 142. Reinforcement 143 is positioned at movable contact 13 and push card junctionBetween, the length direction of reinforcement 143 is consistent with movable contact spring 14 length directions. Second of movable contact spring 14End 142 has outside breakaway-element slit 144 along the length direction, whereby by movable contact spring 14 the second ends142 fix two movable contacts 13 separates. Be convenient to each movable contact 13 with this and adjust flexibly position, moreContact and align with stationary contact 12 well, avoid after Integral plate type malformation, have the movable contact 13 can not be justNormal contact.
As shown in Figure 5, the position of each movable contact 13 is corresponding one by one with stationary contact 12, so that correspondence connectsTouch. Can put by movable contact 13 on the second end 142 of push card 4 displacements drive movable contact springs 14Moving, make movable contact 13 contact or separate with stationary contact 12, between two lead-out tablets 11, can pass through two movable contactsMovable contact spring 14 between point 13 is connected, or disconnects.
As shown in Figures 3 to 5, electromagnetic system 2 comprises that bobbin 21, coil 22, multiple coil connect electricityPin 23, the first yoke 24 and the second yoke 25, form C shape Electromagnetic Drive structure jointly.
Armature component 3 comprises injection-moulded housing 31, parallel two armature plates 32, permanent-magnet steel, turning cylinderPart and armature arm 33, permanent-magnet steel, between two armature plates 32, can be an overall magnet steel,Also can be two and above Combined magnetic steel. Injection-moulded housing 31 is by permanent-magnet steel and two armature plates 32Be inlaid in together, armature component 3 can be around a rotating shaft reciprocally swinging mid-or that setover as shown. ArmatureArm 33 1 outer ends to one side form a projection 331, and this outer end to opposite side be convexly equipped with one spacingPiece 332. Armature arm 33 another outer ends are extended to housing 5, so that the merit of manual switchover state to be providedEnergy.
When relay contact closure work, electromagnetic system 2 drives push card 4 to make its product with armature component 3Bear the motive force acting on contact assembly 6. Electromagnetic system 2 and armature component 3 all can adopt existingCommon structure, therefore do not repeat them here.
As shown in Figure 6, push card 4 main bodys 41 can be the chip frameworks of an injection moulding, general rectangular frameStructure. Main body 41 internal mains will be formed with interior posting 42, chute 43, locating convex block 44, buckling groove45, stopper slot 46 and ceramic member 47. The rectangular frame of posting 42, is formed at main body 41 inside, fixedThe empty chute 43 that forms of position frame 42 middle part thread, the front end of chute 43 can be locating convex block 44, chute 43Rear end arranges a detent 48. Posting 42 front end outsides form a pushing and pressing part 49 of protruding.Buckling groove 45 is communicated with a U-lag around posting 42 of formation with two stopper slots 46. CylindricalThe ceramic member 47 of profile is positioned at main body 41 foremost, when the combination of plastic part and ceramic part, and plasticsPart and ceramic part are direct tight fit assembling, integrated injection molding or are fixed on one by adhesives such as resinsRise. Push card 4 also can entirety be made for ceramic material.
Base 51 and the position that above covers corresponding movable contact 13 and contact or separate with stationary contact 12, can assembleHave ceramic part, ceramic part can be one or more, and ceramic part can be potsherd or ceramic block,Ceramic part is near near arcing position contact, and major function is for utilizing its high heat capacity, resistant to elevated temperatures spyPoint reaches the object that improves product arc resistant ability, even can reduce to a certain extent electric arc and extinguish electricityArc, has improved the load capacity of product relatively. When the plastic part of housing 5 and the combination of ceramic part,Plastic part and ceramic part are direct tight fit assembling or are fixed together by adhesives such as resins.
When assembling, with reference to Fig. 5, Fig. 6 and Fig. 3, first pack chute 43 into armature arm 33 1 outer endsIn, the interior shape of chute 43 can form with armature arm 33 1 outer ends the shape of snap-fit; Limited block 332Snap in detent 48, simultaneously between the projection 331 of armature arm 33 and locating convex block 44, overlap and shootSpring 6, completes the installation of armature arm 33 and push card 4. When movable contact spring 14 is assembled with push card 4, withThe second end 142 of movable contact spring 14 penetrates in buckling groove 45, withstands before posting 42 with shell fragment 1471The pushing and pressing part 49 of end, to locate end 1451 block cards in ceramic member 47 inner sides, whereby by movable contact spring 14Fit together promotion movable contact spring 14 that can be flexible with push card 4 with push card 4. As shown in Figure 3,When push card 4 packs housing 5 into, in housing 5, be reserved with the space of sliding for push card 4.
These push card 4 one end are connected with contact assembly 1, the armature arm 33 in the other end and armature component 3Be connected, in this push card 4, contain spring part. Here the two soft moving system of title refers to, the one, and spring6 compressed distortion, the 2nd, the distortion that is compressed of the movable contact spring 14 in contact assembly 1; This pair of soft promotionNumber of springs in system can be one or more.
Push card embodiment of the present invention, compared to existing technology, for example number of patent application isThe disclosed promotion of Chinese utility model patent (being called for short 05 year patent below) of 200510052291.XMode, the way of propelling of 05 year patent is that armature component drives push card, push card drives spring, springPromote again movable contact spring, the last closing of contact; Otherwise armature component drives push card, push card band is movedSpring, spring drives movable contact spring, and last contact disconnects, and this mode spring directly contacts with movable contact spring. ThisThe way of propelling of inventive embodiments is, the armature arm 33 of armature component 3 promotes spring 6, and spring 6 promotesPush card 4, push card 4 drives movable contact spring 14 to move (closed and disconnected). Spring 6 not with movable contact spring14 directly contacts, the effect reaching is: both utilized the flexibility of spring, avoided again 05 year patent structureSpring and the product failure that brings of high load capacity loop Long Term Contact.
In the structure of the embodiment of the present invention, in push card 4, contain ceramic material part, or push card isCeramic material part, key is, in reseting procedure, to pull open movable contact spring 14 contact is disconnected and movable contact springThe position of 14 contacts is ceramic members 47 of cylindrical outer shape, as shown in Figure 3. Structure whereby, base51 are equipped with ceramic part near the center, contact in contact assembly 1, and ceramic part can be oneOr multiple; Ceramic member 47 in this structure is near contact arc discharge position, and major function is for utilizing its high heat capacityAmount, resistant to elevated temperatures feature reach the object that improves product arc resistant ability, even can fall to a certain extentLow electric arc and extinguish arcs, improved the load capacity of product relatively.
As shown in Figure 7, the double-contact contact assembly that the embodiment of the present invention provides is by two lead-out tablets 11, two12, two movable contacts 13 of individual stationary contact and movable contact spring 14 form; Conventional double-contact current direction is: drawSlice → first, second stationary contact → first, second movable contact → movable contact spring → moving spring lead-out tablet is (as figure2) parallel-connection structure. And the current direction of the structure of the embodiment of the present invention is: the first quiet spring → the first stationary contactThe bridge architecture of the quiet spring of point → the first movable contact → movable contact spring → the second movable contact → the second stationary contact → the second(as Fig. 7), can realize bridge-type fast and connect. In circuit, movable contact spring 14 is only as two groups of movable contactsConductive material between point 13.
As shown in Figure 4, rivet movable contact spring 14 by stator 15 one end of embodiment of the present invention structure, and be fixedly assemblied on base 51 by modes such as tight fit or some adhesives, while forming action togetherFulcrum; The other end is realized closure and the disconnection of dynamic and static spring part by the push card of moving system.
The structure of the present embodiment, makes movable contact spring only be slidably connected with moving system at course of action, can be effectiveAvoid the skill of the extra friction resistance that in similar Direct Action Type bridging contact syndeton, the moving spring system in location producesArt defect.
The structure of the embodiment of the present invention, action that the counter-force of moving spring product in action can active balance product,Discharge (involution) parameter, do not need to arrange in addition in Direct Action Type bridging contact structure in order to balance parametersAdd-on parts.
The structure of the embodiment of the present invention, by the combination of work shape armature component, promotes position at movable contact spring headPortion, amplifies electromagnetic torque conversion, can effectively improve the utilization rate of electromagnetic energy. (as Fig. 4)
According to foregoing description, those skilled in the art are known, and it is two in figure that lead-out tablet does not limit,Can be that the control to multichannel of two-way, multichannel or single channel is carried out in application in pairs, correspondingly arrange enough quietContact, and the movable contact corresponding with stationary contact. Meanwhile, movable contact spring can correspondingly increase and divideNot Kong Zhi, also can carry out at a movable contact spring control of multipair lead-out tablet, for example, movable contact spring and movable contactBetween carry out insulation processing, or movable contact spring is made up of insulating materials, and only between corresponding movable contact withConductive material connects.
In above embodiment, fix a stationary contact with a lead-out tablet, in fact also can consolidate by a lead-out tabletFixed two and plural stationary contact, same, movable contact is adaptability configuration and distribution also, can increase negativeCarry and improve the stability of contact.
Above-mentioned two lead-out tablets are divided into access lead-out tablet and output lead-out tablet, access lead-out tablet corresponding moving,Stationary contact, the described dynamic and static contact position corresponding with output lead-out tablet also can be in in-plane or three-dimensionalIn direction, be staggeredly arranged, to widen gap between the two.
The above embodiment of the present invention is with respect to the beneficial effect of prior art,
1, compare existing double contact structure, old double contact structure circuit is on contactParallel connection, is a point electric current for each group of contact, comes for the electromagnetic relay structure of this inventive embodimentsSay, be series connection circuit on contact, respectively organizes contact load sharing voltage, for whole circuit,The contact of new construction is equivalent to into multiple and has increased dielectric withstanding voltage between the contactor gap of original structure and contactProperty. Meanwhile, two contacts synchronously disconnect, each contact load sharing voltage, and this can significantly reduce the shape of electric arcBecome. The experiment proved that, in above-described embodiment, contact resistance to pressure becomes multiple to increase with service life.
2, this double contact structure in the embodiment of the present invention, the contact structure of comparing same bridge architecture comesSay, the pushing structure of conventional bridge architecture contact is all Direct Action Type, and the present invention is revolving, toolHave simple in structure, the feature such as volume is little. Movable contact spring is only slidably connected with moving system at course of action,Can effectively avoid the extra friction resistance that in similar Direct Action Type bridging contact syndeton, the moving spring system in location producesThe technological deficiency of power.
3, the way of propelling of the present invention is double flexible drive, and resilient spring and movable contact spring coordinate,Operation stability while cooperation between can lifting piece, improving product durability.
4, push card structure in the embodiment of the present invention, push card structure compared to existing technology, for example specialChinese utility model patent (the being called for short 05 year patent below) institute that profit application number is 200510052291.XThe disclosed way of propelling, the way of propelling of 05 year patent is that armature component drives push card, push card promotesSpring, spring promotes movable contact spring again, the last closing of contact; Armature component drives push card, promotes cassette tapeThe spring of moving, spring drives movable contact spring, and last contact disconnects, and this mode spring directly contacts with movable contact spring.The way of propelling of the embodiment of the present invention is, armature component 3 promotes spring 6, and spring 6 promotes push card 4,Push card 4 drives movable contact spring 14 to move (closed and disconnected). Spring 6 does not directly connect with movable contact spring 14Touch, the effect reaching is: both utilized the flexibility of spring, avoided again the spring of 05 year patent structure with highThe product failure that load loop Long Term Contact brings.
5,, when existing contact assembly disconnects in contact, have electric arc and produce, and in the embodiment of the present invention,The direction disconnecting in contact, the position that push card contacts with movable contact spring is ceramic structure, increases the exhausted of structureEdge performance and arc extinguishing ability.
6, between two lead-out tablets, can connect by the movable contact spring between two movable contacts or conductive material,In relay, only have an extremely short current loop, thus the intensity of disturbing magnetic field and scope all with respect toExisting structure is less, has reduced the interference to peripheral equipment.
7, ceramic material can by the assembling of integrated injection molding, tight fit or by the adhesives such as resin with mouldMaterial material is fixed together. With respect to full ceramic structure, in the embodiment of the present invention, composite structure plasticity moreGood; With respect to pure plastic construction, the resistance to electric arc of composite structure, heat resistance and blow-out in the embodiment of the present inventionPerformance is better.
8, in the present invention, two lead-out tablets are all positioned at movable contact spring the same side, like this, and with respect to existing skillArt movable contact spring is positioned at two situations between lead-out tablet, and the adjustable clearance scope of sound contact improves greatly, carriesRise application range of products. And connect because the embodiment of the present invention is bridge-type electric current, two are accessed and drawnThe gap of the stationary contact going out is divided for two parts, and actual is to have promoted at double gap, improving product load energyPower.
The above is only preferred embodiment of the present invention, therefore can not limit with this of the invention processScope, the equivalence of doing according to the present patent application the scope of the claims and description changes and modifies, and all shouldStill remain within the scope of the patent.
Claims (15)
1. a large current magnetic holding relay, comprise contact assembly, electromagnetic assembly, armature component andPush card, with the magnetic effect of permanent-magnet steel in described armature component, makes contact assembly keep normally openOr normally off; The conversion of its normally open or normally off relies on pulse electrical signal to trigger, and makes described electricityDescribed in magnetic Component driver, armature component drives described push card displacement, described in making by described push card displacementContact assembly transition status; It is characterized in that,
Described contact assembly comprises at least two lead-out tablets, at least two stationary contacts, at least two movable contactsAn and movable contact spring; Described stationary contact is individually fixed in described lead-out tablet, and described two lead-out tablets are all positioned at instituteState movable contact spring the same side; Described movable contact spring has the second end that fixing first end and can elastics wingPortion, described movable contact is fixed on described the second end, between described at least two movable contacts, moves by describedReed is electrically connected, described at least two movable contacts and between described movable contact spring part composition connect electric bridge;Described movable contact spring connects described push card, and described push card is connected in described armature component with the other end, instituteState the corresponding described stationary contact in position of movable contact;
Drive movable contact on described movable contact spring to swing by described push card displacement, make described movable contactContact or separate with described stationary contact, between described at least two lead-out tablets, passing through described movable contact and movable contactDescribed movable contact spring between point is switched on or switched off.
2. magnetic latching relay according to claim 1, is characterized in that: described movable contact spring firstEnd is fixed on a stator, and described stator is fixed on described casing of relay.
3. magnetic latching relay according to claim 1, is characterized in that: of described movable contact springOn two ends, form at least one reinforcement, described reinforcement is positioned at described movable contact and described promotion linksConnect between place, the length direction of described reinforcement is consistent with described movable contact spring length direction.
4. magnetic latching relay according to claim 2, is characterized in that: described movable contact spring secondEnd has outside breakaway-element slit along the length direction, whereby by fixing described movable contact spring the second end eachMovable contact part, separates with described slit.
5. according to the magnetic latching relay described in claim 1 to 4 any one, it is characterized in that: described inMovable contact spring forms a U-bend folding near described first end; Described U-bend folding wrap direction is perpendicular to instituteState movable contact spring length direction.
6. according to the magnetic latching relay described in claim 1 to 4 any one, it is characterized in that: described inMovable contact spring comprises multiple superimposed reeds, and described movable contact spring is rolled over to both sides respectively at each lamellar body of the second endBending becomes Y shape opening, and described Y shape A/F is consistent with described push card push-and-pull direction.
7. according to the magnetic latching relay described in claim 1 to 4 any one, it is characterized in that: described inMovable contact spring comprises the first reed, the second reed and the 3rd reed; The second end adjacency of described the first reedDescribed movable contact, the contiguous described armature component of described the 3rd reed, described the second reed is positioned at described firstBetween reed and the 3rd reed; Described a 3rd reed part tilts to described armature component direction.
8. according to the magnetic latching relay described in claim 1 to 4 any one, it is characterized in that: described inAt least two lead-out tablets are divided into access lead-out tablet and output lead-out tablet, described access lead-out tablet corresponding described inDynamic and static contact, the described movable contact corresponding with described output lead-out tablet, the described stationary contact position cloth that staggersPut.
9. according to the magnetic latching relay described in claim 1 to 4 any one, it is characterized in that: described inContact assembly, electromagnetic assembly, armature component and push card are installed in a housing, and described housing comprisesBase and upper cover, described base and the position that above covers the contact of corresponding described movable contact and stationary contact or separate,Be respectively fitted with ceramic part, described ceramic part is near near arcing position contact.
10. according to the magnetic latching relay described in claim 1 to 4 any one, it is characterized in that: instituteState the direction that push card disconnects in contact, the position contacting with movable contact spring is ceramic component.
11. according to the magnetic latching relay described in claim 1 to 4 any one, it is characterized in that: instituteState armature component and comprise permanent-magnet steel, armature plate and armature arm, described electromagnetic assembly drives described armature groupPart rotates, thereby promotes described push card displacement with the swing of described armature arm; The sliding group of described armature armIn described push card, and be connected by elastic component between described armature arm and described push card.
The movable contact spring of 12. 1 kinds of large current magnetic holding relays, is made up of elastic conducting material, described movingOn reed, be fixed with at least two movable contacts, it is characterized in that, described movable contact spring has fixing first endPortion and one can elastics wing the second end, described movable contact is fixed on described the second end, at least describedBetween two movable contacts, be electrically connected by described movable contact spring; The second end of described movable contact spring is subject to one to push awayMoving cassette tape moves and swings.
The movable contact spring of 13. 1 kinds of large current magnetic holding relays, is made up of elastic insulating material, described movingOn reed, be fixed with at least two movable contacts, it is characterized in that, described movable contact spring has fixing first endPortion and one can elastics wing the second end, described movable contact is fixed on described the second end, at least describedBetween two movable contacts, be electrically connected by conductive material; The second end of described movable contact spring is subject to a promotionCassette tape moves and swings.
14. 1 kinds of large current magnetic holding relays, comprise contact assembly, electromagnetic assembly, armature component withAnd push card, with the magnetic effect of permanent-magnet steel in described armature component, make contact assembly keep often opening shapeState or normally off; The conversion of its normally open or normally off relies on pulse electrical signal to trigger, described in makingElectromagnetic assembly drives described armature component to drive described push card displacement, makes institute by described push card displacementState contact assembly transition status; Described contact assembly comprises the movable contact spring as described in claim 12 or 13.
The contact assembly of 15. 1 kinds of large current magnetic holding relays, is characterized in that, described contact assemblyComprise at least two lead-out tablets, at least two stationary contacts, at least two movable contacts and a movable contact spring;
Described stationary contact is individually fixed in described lead-out tablet, and described two lead-out tablets are all positioned at described movable contact springThe same side; Described movable contact spring has the second end that fixing first end and can elastics wing, described inMovable contact is fixed on described the second end, between described at least two movable contacts by described movable contact spring or leadElectric material is electrically connected, described at least two movable contacts and between described movable contact spring or conductive material portionBe grouped into and connect electric bridge; The second end of described movable contact spring connects a push card, and described push card is with the other endBe connected in the armature component of relay, the corresponding described stationary contact in position of described movable contact;
Drive movable contact on described movable contact spring the second end to swing by described push card displacement, make instituteState movable contact with described stationary contact contact or separate, between described at least two lead-out tablets, passing through described movable contactDescribed movable contact spring between point and movable contact is switched on or switched off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410365699.1A CN104091725B (en) | 2014-07-29 | 2014-07-29 | Large current magnetic holding relay and movable contact spring thereof, contact assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410365699.1A CN104091725B (en) | 2014-07-29 | 2014-07-29 | Large current magnetic holding relay and movable contact spring thereof, contact assembly |
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| CN104091725A CN104091725A (en) | 2014-10-08 |
| CN104091725B true CN104091725B (en) | 2016-05-18 |
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| CN106653490B (en) * | 2017-01-23 | 2019-08-06 | 厦门宏发电力电器有限公司 | A kind of connection structure between the dynamic spring part and pedestal of magnetic latching relay |
| CN107342190B (en) * | 2017-08-22 | 2019-07-19 | 江阴力源电子有限公司 | A kind of pushing mechanism of bistable magnetic latching relay |
| CN107978488B (en) * | 2017-11-27 | 2024-02-02 | 江苏现代电力科技股份有限公司 | Relay |
| CN108010803A (en) * | 2018-01-10 | 2018-05-08 | 厦门赛特勒继电器有限公司 | A kind of high-reliability electrical magnetic relay of low-temperature-rise shock resistance electric current |
| CN108597956A (en) * | 2018-06-29 | 2018-09-28 | 上海安奕极企业发展有限公司 | It can self-cleaning relay |
| CN109148222B (en) * | 2018-09-20 | 2023-09-05 | 亚洲龙电气股份有限公司 | Industrial control electromagnetic relay integrating socket function |
| CN109243925B (en) * | 2018-09-29 | 2024-02-09 | 上海永继电气股份有限公司 | Relay and contact device thereof |
| CN109786179B (en) * | 2018-12-29 | 2023-09-19 | 惠州涌继电力有限公司 | Bistable relay for DC power supply management |
| CN109637900B (en) * | 2019-01-16 | 2023-11-07 | 三友联众集团股份有限公司 | Synchronous electromagnetic relay with double-contact assemblies |
| CN110379679B (en) * | 2019-07-09 | 2024-08-27 | 厦门宏发电声股份有限公司 | Small high-power relay with pressing connection terminal |
| CN110634710A (en) * | 2019-10-05 | 2019-12-31 | 浙江美硕电气科技股份有限公司 | Permanent magnetic contactor |
| CN112415376B (en) * | 2020-12-02 | 2021-07-13 | 盐城工业职业技术学院 | Relay capable of detecting working performance on line |
| CN114724895B (en) * | 2021-01-06 | 2024-07-16 | 松川(厦门)精密电子有限公司 | Electromagnetic relay |
| CN113113266A (en) * | 2021-04-22 | 2021-07-13 | 厦门宏发电力电器有限公司 | Relay and parameter correction method thereof |
| WO2024114759A1 (en) * | 2022-12-01 | 2024-06-06 | 厦门宏发电力电器有限公司 | Relay |
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