CN104091725A - Large-current magnetic latching relay, movable contact spring of large-current magnetic latching relay, and contact assembly of large-current magnetic latching relay - Google Patents
Large-current magnetic latching relay, movable contact spring of large-current magnetic latching relay, and contact assembly of large-current magnetic latching relay Download PDFInfo
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- CN104091725A CN104091725A CN201410365699.1A CN201410365699A CN104091725A CN 104091725 A CN104091725 A CN 104091725A CN 201410365699 A CN201410365699 A CN 201410365699A CN 104091725 A CN104091725 A CN 104091725A
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Abstract
The invention provides a large-current magnetic latching relay, a movable contact spring of the large-current magnetic latching relay, and a contact assembly of the large-current magnetic latching relay. The large-current magnetic latching relay comprises the contact assembly, an electromagnetic assembly, an armature assembly and a pushing clamp, and under the magnetic attraction action of permanent magnet steel inside the armature assembly, the contact assembly keeps in the normally open state or in the normally closed state; the contact assembly is triggered by pulse electric signals to be switched between the normally open state and the normally closed state, so that the electromagnetic assembly drives the armature assembly to drive the pushing clamp to shift, and the contact assembly is switched between the normally open state and the normally closed state through shifting of the pushing clamp. The movable contact spring of the large-current magnetic latching relay is made of elastic conductive materials and is fixedly provided with at least two movable contacts, the movable contact spring is provided with a fixed first end portion and a second end portion capable of elastically swinging, the movable contacts are fixed to the second end portion and are electrically connected through the movable contact spring, and the second end portion of the movable contact spring is driven by the pushing clamp to swing.
Description
Technical field
The present invention relates to a kind of large current magnetic holding relay, especially a kind of large current magnetic holding relay of brand-new double contact structure 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.Traditional electrical magnetic relay only plays a part automatic connection and cut-out to circuit, and the normally open of magnetic latching relay or normally off rely on permanent-magnet steel effect completely, and the conversion of its on off state relies on the pulse electrical signal with certain width to trigger and complete.In the time that the contact of relay need to be opened or close state (while switching on or off load), only need with positive and negative pulse voltage excitation coil, relay just completed and has opened and the conversion of closing state in moment.Conventionally contact is in the time of hold mode, and coil does not need to continue energising, and the state that the magnetic force of dependence permanent-magnet steel just can maintain relay is constant.Magnetic latching relay is widely used in electric power system, is that a 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, or more than electric current 20A magnetic latching relay product.
As shown in Figure 1, the functional component of existing double-contact electromagnetic relay comprises electromagnetic assembly 9, armature component 8, push card 7 and contact assembly 6, with the magnetic effect of armature component 8 interior permanent-magnet steels, can make contact assembly 6 keep normally open or normally off; The conversion of its normally open or normally off can rely on the external pulse signal of telecommunication to trigger, and so can utilize electromagnetic assembly 9 to drive armature component 8 to drive push card 7 displacements, makes contact assembly 6 change normally open or normally off by the displacement of push card 7.
Electromagnetic system 9 comprises that bobbin 91, coil 92, multiple coil connect electric pin 93, the first yoke 94 and the second yoke 95, forms C shape Electromagnetic Drive structure.Armature component 8 comprises injection-moulded housing 81, parallel two armature plates 82, permanent-magnet steel and armature arm 83, and armature component 8 can be around a rotating shaft reciprocating rotation.When relay contact closure work, electromagnetic system 9 drives push card 7 to make it produce the motive force acting on contact assembly 6 with armature component 8.
Please refer to Fig. 1, Fig. 2, existing double-contact contact system 6 comprises that the first lead-out tablet 61, two fixed contacts 62, the second lead-out tablet 63, two moving contacts 64 and movable contact spring 65, the first lead-out tablets 61, the second lead-out tablet 63 and movable contact spring 65 process by stamping-out.The first lead-out tablet 61 has exit and link, and the first lead-out tablet 61 links and fixed contact 62 are riveted together; The second lead-out tablet 63 has exit and link, and the second lead-out tablet 63 links and movable contact spring 65 first ends are riveted together.Movable contact spring 65 can be made up of single or multiple reeds.And movable contact spring 65 movable ends and moving contact 64 are riveted together, make the second lead-out tablet 63 for can not moving-conductor, 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 to make it produce the motive force acting on movable contact spring 65 with armature component 8, so that two moving contacts 64 contact or separate with two fixed contacts 62, such the first lead-out tablet 61 and the 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 is successively by the first lead-out tablet 61, two fixed contacts 62, two moving contacts 64, movable contact spring 65 and the second lead-out tablet 63, electric current forms a larger loop in the inner meeting of relay, and because double contact structure, have again current distributing, this can form interfere with electromagnetic field in a big way in relay, this interfere with electromagnetic field can have influence on contiguous precision circuit parts, while being used for intelligent electric meter such as magnetic latching relay, the induced electricity that interfere with electromagnetic field produces fails to be convened for lack of a quorum and directly affects the accuracy of intelligent electric meter detection numerical value.
In addition, this traditional double-contact pattern, except improving product load capacity, there is no lifting to dielectric withstanding voltage performance between product contact gap, contact.Meanwhile, movable contact spring is arranged between two lead-out tablets, and 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 large current magnetic holding relay of brand-new double contact structure and movable contact spring thereof, contact assembly are provided, not only can greatly improve the load capacity of product, can promote at double dielectric withstanding voltage level between contact gap and contact simultaneously; It is the development trend of modern relay.
Object of the present invention realizes like this: a kind of large current magnetic holding relay is provided, comprise 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;
Described contact assembly comprises at least two lead-out tablets, at least two fixed contacts, at least two moving contacts and a movable contact spring; Described fixed contact is individually fixed in described lead-out tablet, and described two lead-out tablets are all positioned at described movable contact spring the same side; Described movable contact spring has the second end that fixing first end and can elastics wing, described moving contact is fixed on described the second end, between described at least two moving contacts, be electrically connected by described movable contact spring, described at least two moving 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 armature component with the other end, the corresponding described fixed contact in position of described moving contact;
Drive moving contact on described movable contact spring the second end to swing by described push card displacement, make described moving contact with described fixed contact contact or separate, between described at least two lead-out tablets, being switched on or switched off by the described movable contact spring between described moving contact and moving contact.
According to above-mentioned design, described movable contact spring first end is fixed on a stator, and described stator is fixed on described casing of relay.
According to above-mentioned design, on the second end of described movable contact spring, form at least one reinforcement, described reinforcement is between described moving contact and described push card junction, and the length direction of described reinforcement is consistent with described movable contact spring length direction.
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 moving contact part, separates with described slit whereby.
According to above-mentioned design, described movable contact spring forms a U-bend folding near described first end; Described U-bend folding 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 forms Y shape opening to both sides bending respectively at each lamellar body of the second end, and described Y shape A/F is consistent with described push card push-and-pull direction.
According to above-mentioned design, described movable contact spring comprises the first reed, the second reed and the 3rd reed; The described moving contact of the second end adjacency of described the first reed, the contiguous described armature component of described the 3rd reed, described the second reed is between described the first reed and the 3rd reed; Described a 3rd reed part tilts to described armature component direction.
According to above-mentioned design, described at least two lead-out tablets are divided into access lead-out tablet and output lead-out tablet, the described dynamic and static contact that described access lead-out tablet is corresponding, and the described dynamic and static contact position corresponding with described output lead-out tablet is staggeredly arranged.
According to above-mentioned design, described contact assembly, electromagnetic assembly, armature component and push card are installed in a housing, described housing comprises base and upper cover, described base and the position that above covers the contact of corresponding described moving contact and fixed contact or separate, be respectively fitted with ceramic part, described ceramic part is near near arcing position contact.
According to above-mentioned design, the direction that described push card disconnects in contact, the position that push card contacts with movable contact spring is ceramic structure.
According to above-mentioned design, described armature component comprises permanent-magnet steel, armature plate and armature arm, and described electromagnetic assembly drives described armature component to rotate, thereby promotes described push card displacement with the swing of described armature arm; Described armature arm is slided group in described push card, and is connected by elastic component between described armature arm and described push card.
The embodiment of the present invention provides a kind of movable contact spring of large current magnetic holding relay on the other hand, made by elastic conducting material, on described movable contact spring, be fixed with at least two moving contacts, described movable contact spring has the second end that fixing first end and can elastics wing, described moving contact is fixed on described the second end, between described at least two moving 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.
The one side embodiment of the present invention provides a kind of movable contact spring of large current magnetic holding relay again, made by elastomeric material, on described movable contact spring, be fixed with at least two moving contacts, described movable contact spring has the second end that fixing first end and can elastics wing, described moving contact is fixed on described the second end, between described at least two moving contacts, is electrically connected by electric conducting material; The second end of described movable contact spring is driven by a push card and swings.
The another aspect embodiment of the present invention provides a kind of contact assembly of large current magnetic holding relay, and described contact assembly comprises at least two lead-out tablets, at least two fixed contacts, at least two moving contacts and a movable contact spring; Described fixed contact is individually fixed in described lead-out tablet, and described two lead-out tablets are all positioned at described movable contact spring the same side; Described movable contact spring has the second end that fixing first end and can elastics wing, described moving contact is fixed on described the second end, between described at least two moving contacts, be electrically connected by described movable contact spring or electric conducting material, described at least two moving contacts and between described movable contact spring or electric conducting material part composition connect electric bridge; The second end of described movable contact spring connects a push card, and described push card is connected in the armature component of relay with the other end, the corresponding described fixed contact in position of described moving contact; Drive moving contact on described movable contact spring the second end to swing by described push card displacement, make described moving contact with described fixed contact contact or separate, between described at least two lead-out tablets, being switched on or switched off by the described movable contact spring between described moving contact and moving contact.
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, on contact, circuit, be in parallel, a point electric current for each group of contact, for the electromagnetic relay structure of this inventive embodiments, on contact, circuit, be series connection, respectively organize 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 contact gap of original structure and contact.Meanwhile, two groups of contacts synchronously disconnect, and respectively organize contact load sharing voltage, and this can significantly reduce the formation of electric arc.The experiment proved that, in above-described embodiment, contact resistance to pressure becomes multiple to increase with useful life.
2, double contact structure in the embodiment of the present invention, compare the contact structure of same bridge architecture, the pushing structure of conventional bridge architecture contact is all Direct Action Type, the present invention is revolving, have simple in structure, 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, the 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, the disclosed way of propelling of Chinese utility model patent (being called for short 05 year patent below) that for example number of patent application is 200510052291.X, the way of propelling of 05 year patent is that armature component drives push card, push card drives spring, spring promotes movable contact spring again, the last closing of contact; Armature component drives push card, and push card drives spring, and 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 card drive movable contact spring action (closed and disconnected).Spring does not directly contact with movable contact spring, and the effect reaching is: both utilized the flexibility of spring, avoided again the spring of 05 year patent structure and the product failure that high load capacity 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 position disconnecting in contact, the position that push card contacts with movable contact spring is ceramic structure, increases insulation property and the arc extinguishing ability of structure.
6, between two lead-out tablets, can connect by the movable contact spring between two moving contacts or electric conducting material, in relay, only there is an extremely short current circuit, so the intensity of disturbing magnetic field and scope are all less with respect to existing structure, reduce the interference to peripheral equipment.
7, ceramic material can or be fixed together by the adhesives such as resin and plastic material by integrated injection molding, tight fit assembling.With respect to full ceramic structure, in the embodiment of the present invention, composite structure plasticity is better; With respect to pure plastic construction, in the embodiment of the present invention, the resistance to electric arc of composite structure, thermal endurance and blow-out performance are better.
8, in the present invention, two lead-out tablets are all positioned at movable contact spring the same side, like this, are positioned at two situations between lead-out tablet with respect to prior art movable contact spring, and the adjustable clearance scope of sound contact improves greatly, the improving product scope of application.And connect because the embodiment of the present invention is bridge-type electric current, the gap of two fixed contacts that access and draw is divided for two parts, actual is to have promoted at double gap, improving product load capacity.
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.
Embodiment
The exemplary embodiments that embodies feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various variations on different embodiment, it neither departs from the scope of the present invention, 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 the relative position relation between each parts is described, 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, relay mainly comprises contact assembly 1, electromagnetic assembly 2, armature component 3 and push card 4, these parts are all installed in housing 5, housing 5 can comprise base 51 and upper cover (not shown, encapsulation is used).Can, with the magnetic effect of armature component 3 interior permanent-magnet steels, make 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 armature component 3 to drive push card 4 displacements, makes contact assembly 1 conversion be switched on or switched off state by push card 4 displacements.
As shown in Figure 3, Figure 4, the present embodiment contact assembly 1 comprises two spaced lead-out tablets 11, two fixed contacts 12, two moving contacts 13 and movable contact springs 14.Fixed contact 12 is riveted respectively and is fixed on 11, two lead-out tablets 11 of two lead-out tablets and is all positioned at movable contact spring 14 the same sides, and two lead-out tablet 11 rear sides also can be fixed respectively a binding post 16, for circumscripted power line.Movable contact spring 14 has the second end 142 that fixing first end 141 and can elastics wing, and moving contact 13 can be riveted and is fixed between 142, two moving contacts 13 of the second end and can be electrically connected by movable contact spring 14 or other electric conducting 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 armature component 3 with rear end.
As shown in Figure 4, movable contact spring 14 first ends 141 can be riveted and are fixed on a stator 15, and stator 15 can be a metallic plate, and stator 15 can be fixed in base 51 by setting-in.Movable contact spring 14 can comprise multiple superimposed reeds, specifically comprises 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 component 3, the second reeds 146 between the first reed 145 and the 3rd reed 147 in abutting connection with moving contact 13, the three reeds 147.The first reed 145 is bent to form an end, location 1451 towards lead-out tablet 11 direction parts.A the 3rd reed 147 wherein part is formed slopely shell fragment 1471 to armature component 3 directions, and whereby, movable contact spring 14 forms Y shape opening to both sides bending respectively at each lamellar body of the second end 142, and Y shape A/F is consistent with push card push-and-pull direction.Movable contact spring 14 forms a U-bend folding 148 near first end 141; U-bend is rolled over 148 wrap direction perpendicular to 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, reinforcement 143 can be formed on the first reed 145, reinforcement 143 also can be stacked on the first reed 145 and the second reed 146, also can be stacked on the first reed 145, the second reed 146 and the 3rd reed 147, to strengthen the rigidity of the second end 142.Reinforcement 143 is between moving contact 13 and push card junction, and the length direction of reinforcement 143 is consistent with movable contact spring 14 length directions.The second end 142 of movable contact spring 14 has outside breakaway-element slit 144 along the length direction, whereby movable contact spring 14 the second ends 142 is fixed to two moving contacts 13 and separates.Be convenient to each moving contact 13 with this and adjust flexibly position, contact and align with fixed contact 12 better, avoid after Integral plate type malformation, have moving contact 13 normally not contact.
As shown in Figure 5, the position of each moving contact 13 is corresponding one by one with fixed contact 12, so that corresponding contact.Can swing by moving contact 13 on the second end 142 of push card 4 displacements drive movable contact springs 14, make moving contact 13 contact or separate with fixed contact 12, between two lead-out tablets 11, can connect by the movable contact spring 14 between two moving contacts 13, or disconnect.
As shown in Figures 3 to 5, electromagnetic system 2 comprises that bobbin 21, coil 22, multiple coil connect electric pin 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, rotating shaft piece and armature arm 33, and permanent-magnet steel, between two armature plates 32, can be an overall magnet steel, can be also two and above Combined magnetic steel.Injection-moulded housing 31 is inlaid in permanent-magnet steel and two armature plates 32 together, and armature component 3 can be around a rotating shaft reciprocally swinging mid-or that setover as shown.Armature arm 33 1 outer ends form a projection 331 to a side, and this outer end is convexly equipped with a guide vane end stop 332 to opposite side.Armature arm 33 another outer ends are extended to housing 5, so that the function of manual switchover state to be provided.
When relay contact closure work, electromagnetic system 2 drives push card 4 to make it produce the motive force acting on contact assembly 6 with armature component 3.Electromagnetic system 2 and armature component 3 all can adopt existing common 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 mount structure.Main body 41 internal mains will be formed with interior posting 42, chute 43, locating convex block 44, buckling groove 45, stopper slot 46 and ceramic member 47.The rectangular frame of posting 42, is formed at main body 41 inside, the empty chute 43 that forms of posting 42 middle part thread, and the front end of chute 43 can be locating convex block 44, and the rear end of chute 43 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.The ceramic member 47 of cylindrical outer shape is positioned at main body 41 foremost, and when the combination of plastic part and ceramic part, plastic part and ceramic part are direct tight fit assembling, integrated injection molding or are fixed together by adhesives such as resins.Push card 4 also can entirety be made for ceramic material.
Base 51 and the position that above covers corresponding moving contact 13 and contact or separate with fixed contact 12, can be equipped with ceramic part, ceramic part can be one or more, ceramic part can be potsherd or ceramic block, ceramic part is near near arcing position contact, major function is to utilize its high heat capacity, resistant to elevated temperatures feature to reach the object that improves product arc resistant ability, even can reduce to a certain extent electric arc and extinguish arcs, has relatively improved the load capacity of product.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 in chute 43 with armature arm 33 1 outer ends, the interior shape of chute 43 can form with armature arm 33 1 outer ends the shape of snap-fit; Guide vane end stop 332 snaps in detent 48, and simultaneously pocketed springs 6 between the projection 331 of armature arm 33 and locating convex block 44, completes the installation of armature arm 33 and push card 4.When movable contact spring 14 is assembled with push card 4, penetrate in buckling groove 45 with the second end 142 of movable contact spring 14, withstand the pushing and pressing part 49 of posting 42 front ends with shell fragment 1471, to locate end 1451 block cards in ceramic member 47 inner sides, whereby movable contact spring 14 and push card 4 are fitted together to promotion movable contact spring 14 that can be flexible 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, and the other end is connected with the armature arm 33 in armature component 3, in this push card 4, contains spring part.Here the two soft moving system claiming refers to, the one, and the compressed distortion of spring 6, the 2nd, the distortion that is compressed of the movable contact spring 14 in contact assembly 1; Number of springs in this pair of soft moving system can be one or more.
Push card embodiment of the present invention, compared to existing technology, the disclosed way of propelling of Chinese utility model patent (being called for short 05 year patent below) that for example number of patent application is 200510052291.X, the way of propelling of 05 year patent is that armature component drives push card, push card drives spring, spring promotes movable contact spring again, the last closing of contact; Otherwise armature component drives push card, push card drives spring, and 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, the armature arm 33 of armature component 3 promotes spring 6, and spring 6 promotes push card 4, and push card 4 drives movable contact spring 14 to move (closed and disconnected).Spring 6 does not directly contact with movable contact spring 14, and the effect reaching is: both utilized the flexibility of spring, avoided again the spring of 05 year patent structure and the product failure that high load capacity loop Long Term Contact brings.
In the structure of the embodiment of the present invention, in push card 4, contain ceramic material part, or push card is ceramic material part, key is, in reseting procedure, pulling open movable contact spring 14, to make contact disconnect the position contacting with movable contact spring 14 be the ceramic member 47 of cylindrical outer shape, as shown in Figure 3.Structure whereby, base 51 is equipped with ceramic part near the center, contact in contact assembly 1, and ceramic part can be one or more; Ceramic member 47 in this structure is near contact arc discharge position, major function is to utilize its high heat capacity, resistant to elevated temperatures feature to reach the object that improves product arc resistant ability, even can reduce to a certain extent electric arc and extinguish arcs, relatively improve the load capacity of product.
As shown in Figure 7, the double-contact contact assembly that the embodiment of the present invention provides is made up of 12, two moving contacts 13 of 11, two fixed contacts of two lead-out tablets and movable contact spring 14; Conventional double-contact current direction is: the parallel-connection structure of lead-out tablet → first, second fixed contact → first, second moving contact → movable contact spring → moving spring lead-out tablet (as Fig. 2).And the current direction of the structure of the embodiment of the present invention is: the bridge architecture (as Fig. 7) of the quiet spring of the first quiet spring → the first fixed contact → the first moving contact → movable contact spring → the second moving contact → the second fixed contact → the second, can realize bridge-type fast and connect.In circuit, movable contact spring 14 is only as the electric conducting material between two groups of moving contacts 13.
As shown in Figure 4, one end of embodiment of the present invention structure is riveted together movable contact spring 14 by stator 15, and is fixedly assemblied on base 51 fulcrum while forming action by modes such as tight fit or some adhesives; 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 effectively avoid the technological deficiency of the extra friction resistance that in similar Direct Action Type bridging contact syndeton, the moving spring system in location produces.
The structure of the embodiment of the present invention, action, release (involution) parameter that the counter-force of moving spring product in action can active balance product, do not need to arrange in addition the add-on parts in order to balance parameters in Direct Action Type bridging contact structure.
The structure of the embodiment of the present invention, by the combination of work shape armature component, promotes position at movable contact spring head, and electromagnetic torque conversion is amplified, and can effectively improve the utilance 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, and can be that the control to multichannel of two-way, multichannel or single channel is carried out in application in pairs, and enough fixed contacts are correspondingly set, and the moving contact corresponding with fixed contact.Meanwhile, movable contact spring can correspondingly increase and control respectively, also can carry out at a movable contact spring control of multipair lead-out tablet, for example, between movable contact spring and moving contact, carry out insulation processing, or movable contact spring is made up of insulating material, and only between corresponding moving contact, connects with electric conducting material.
In above embodiment, fix a fixed contact with a lead-out tablet, in fact also can fix two and plural fixed contact by a lead-out tablet, same, moving contact is adaptability configuration and distribution also, can increase load 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 dynamic and static contact corresponding to lead-out tablet, the described dynamic and static contact position corresponding with output lead-out tablet also can be staggeredly arranged on in-plane or three-dimensional, 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, on contact, circuit, be in parallel, a point electric current for each group of contact, for the electromagnetic relay structure of this inventive embodiments, on contact, circuit, be series connection, respectively organize 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 contact gap of original structure and contact.Meanwhile, two contacts synchronously disconnect, each contact load sharing voltage, and this can significantly reduce the formation of electric arc.The experiment proved that, in above-described embodiment, contact resistance to pressure becomes multiple to increase with useful life.
2, this double contact structure in the embodiment of the present invention, compares the contact structure of same bridge architecture, and the pushing structure of conventional bridge architecture contact is all Direct Action Type, and the present invention is revolving, have 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 avoids the technological deficiency of the extra friction resistance that in similar Direct Action Type bridging contact syndeton, the moving spring system in location produces.
3, the way of propelling of the present invention is double flexible drive, and resilient spring and movable contact spring coordinate, the 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, the disclosed way of propelling of Chinese utility model patent (being called for short 05 year patent below) that for example number of patent application is 200510052291.X, the way of propelling of 05 year patent is that armature component drives push card, push card promotes spring, spring promotes movable contact spring again, the last closing of contact; Armature component drives push card, and push card drives spring, and 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, and push card 4 drives movable contact spring 14 to move (closed and disconnected).Spring 6 does not directly contact with movable contact spring 14, and the effect reaching is: both utilized the flexibility of spring, avoided again the spring of 05 year patent structure and the product failure that high load capacity 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 insulation property and the arc extinguishing ability of structure.
6, between two lead-out tablets, can connect by the movable contact spring between two moving contacts or electric conducting material, in relay, only there is an extremely short current circuit, so the intensity of disturbing magnetic field and scope are all less with respect to existing structure, reduce the interference to peripheral equipment.
7, ceramic material can or be fixed together by the adhesives such as resin and plastic material by integrated injection molding, tight fit assembling.With respect to full ceramic structure, in the embodiment of the present invention, composite structure plasticity is better; With respect to pure plastic construction, in the embodiment of the present invention, the resistance to electric arc of composite structure, thermal endurance and blow-out performance are better.
8, in the present invention, two lead-out tablets are all positioned at movable contact spring the same side, like this, are positioned at two situations between lead-out tablet with respect to prior art movable contact spring, and the adjustable clearance scope of sound contact improves greatly, the improving product scope of application.And connect because the embodiment of the present invention is bridge-type electric current, the gap of two fixed contacts that access and draw is divided for two parts, actual is to have promoted at double gap, improving product load capacity.
The above, be only preferred embodiment of the present invention, therefore can not limit scope of the invention process with this, the equivalence of doing according to the present patent application the scope of the claims and description changes and modifies, and all should still remain within the scope of the patent.
Claims (15)
1. a large current magnetic holding relay, comprises contact assembly, electromagnetic assembly, armature component and push card, with the magnetic effect of permanent-magnet steel in described armature component, makes 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; It is characterized in that,
Described contact assembly comprises at least two lead-out tablets, at least two fixed contacts, at least two moving contacts and a movable contact spring; Described fixed contact is individually fixed in described lead-out tablet, and described two lead-out tablets are all positioned at described movable contact spring the same side; Described movable contact spring has the second end that fixing first end and can elastics wing, described moving contact is fixed on described the second end, between described at least two moving contacts, be electrically connected by described movable contact spring, described at least two moving 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, the corresponding described fixed contact in position of described moving contact;
Drive moving contact on described movable contact spring to swing by described push card displacement, make described moving contact with described fixed contact contact or separate, between described at least two lead-out tablets, be switched on or switched off by the described movable contact spring between described moving contact and moving contact.
2. magnetic latching relay according to claim 1, is characterized in that: described movable contact spring first end is fixed on a stator, and described stator is fixed on described casing of relay.
3. magnetic latching relay according to claim 1, it is characterized in that: on the second end of described movable contact spring, form at least one reinforcement, described reinforcement is between described moving contact and described push card junction, and 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 the second end has outside breakaway-element slit along the length direction, by fixing described movable contact spring the second end each moving contact part, separates with described slit whereby.
5. according to the magnetic latching relay described in claim 1 to 4 any one, it is characterized in that: described movable contact spring forms a U-bend folding near described first end; Described U-bend folding wrap direction is perpendicular to described 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 movable contact spring comprises multiple superimposed reeds, described movable contact spring forms Y shape opening to both sides bending respectively at each lamellar body of the second end, 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 movable contact spring comprises the first reed, the second reed and the 3rd reed; The described moving contact of the second end adjacency of described the first reed, the contiguous described armature component of described the 3rd reed, described the second reed is between described the first 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 at least two lead-out tablets are divided into access lead-out tablet and output lead-out tablet, the described dynamic and static contact that described access lead-out tablet is corresponding, the described dynamic and static contact position corresponding with described output lead-out tablet is staggeredly arranged.
9. according to the magnetic latching relay described in claim 1 to 4 any one, it is characterized in that: described contact assembly, electromagnetic assembly, armature component and push card are installed in a housing, described housing comprises base and upper cover, described base and the position that above covers the contact of corresponding described moving contact and fixed 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: the direction that described 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: described armature component comprises permanent-magnet steel, armature plate and armature arm, described electromagnetic assembly drives described armature component to rotate, thereby promotes described push card displacement with the swing of described armature arm; Described armature arm is slided group in described push card, and is 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, made by elastic conducting material, on described movable contact spring, be fixed with at least two moving contacts, it is characterized in that, described movable contact spring has the second end that fixing first end and can elastics wing, described moving contact is fixed on described the second end, between described at least two moving 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.
The movable contact spring of 13. 1 kinds of large current magnetic holding relays, made by elastic insulating material, on described movable contact spring, be fixed with at least two moving contacts, it is characterized in that, described movable contact spring has the second end that fixing first end and can elastics wing, described moving contact is fixed on described the second end, between described at least two moving contacts, is electrically connected by electric conducting material; The second end of described movable contact spring is driven by a push card and swings.
14. 1 kinds of large current magnetic holding relays, comprise 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; 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 assembly comprises at least two lead-out tablets, at least two fixed contacts, at least two moving contacts and a movable contact spring;
Described fixed contact is individually fixed in described lead-out tablet, and described two lead-out tablets are all positioned at described movable contact spring the same side; Described movable contact spring has the second end that fixing first end and can elastics wing, described moving contact is fixed on described the second end, between described at least two moving contacts, be electrically connected by described movable contact spring or electric conducting material, described at least two moving contacts and between described movable contact spring or electric conducting material part composition connect electric bridge; The second end of described movable contact spring connects a push card, and described push card is connected in the armature component of relay with the other end, the corresponding described fixed contact in position of described moving contact;
Drive moving contact on described movable contact spring the second end to swing by described push card displacement, make described moving contact with described fixed contact contact or separate, between described at least two lead-out tablets, being switched on or switched off by the described movable contact spring between described moving contact and moving contact.
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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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| Publication Number | Publication Date |
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| CN104091725A true CN104091725A (en) | 2014-10-08 |
| CN104091725B CN104091725B (en) | 2016-05-18 |
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| CN201410365699.1A Active CN104091725B (en) | 2014-07-29 | 2014-07-29 | Large current magnetic holding relay and movable contact spring thereof, contact assembly |
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| CN106653490A (en) * | 2017-01-23 | 2017-05-10 | 厦门宏发电力电器有限公司 | Connecting structure between movable spring parts and base of magnetic latching relay |
| CN107342190A (en) * | 2017-08-22 | 2017-11-10 | 江阴力源电子有限公司 | A kind of pushing mechanism of bistable magnetic latching relay |
| CN107978488A (en) * | 2017-11-27 | 2018-05-01 | 江苏现代电力科技股份有限公司 | A kind of 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 |
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| CN110379679A (en) * | 2019-07-09 | 2019-10-25 | 厦门宏发电声股份有限公司 | Small high-power relay with pressing connecting terminal |
| CN112415376A (en) * | 2020-12-02 | 2021-02-26 | 盐城工业职业技术学院 | Relay capable of detecting working performance on line |
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| CN106653490A (en) * | 2017-01-23 | 2017-05-10 | 厦门宏发电力电器有限公司 | Connecting structure between movable spring parts and base of magnetic latching relay |
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| CN107978488B (en) * | 2017-11-27 | 2024-02-02 | 江苏现代电力科技股份有限公司 | Relay |
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| 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 |
| CN109148222A (en) * | 2018-09-20 | 2019-01-04 | 亚洲龙电气股份有限公司 | A kind of industry control electromagnetic relay for gathering function of socket |
| CN109243925A (en) * | 2018-09-29 | 2019-01-18 | 上海永继电气股份有限公司 | A kind of relay and its contact apparatus |
| 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 |
| CN109786179A (en) * | 2018-12-29 | 2019-05-21 | 惠州市维格机电有限公司 | A kind of bistable relay for DC power supply management |
| 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 |
| CN110379679A (en) * | 2019-07-09 | 2019-10-25 | 厦门宏发电声股份有限公司 | Small high-power relay with pressing connecting terminal |
| CN112415376A (en) * | 2020-12-02 | 2021-02-26 | 盐城工业职业技术学院 | Relay capable of detecting working performance on line |
| 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 |
| CN114724895A (en) * | 2021-01-06 | 2022-07-08 | 厦门台松精密电子有限公司 | 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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