CN203721649U - Electromagnetic relay and movable contact spring thereof - Google Patents
Electromagnetic relay and movable contact spring thereof Download PDFInfo
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- CN203721649U CN203721649U CN201420043784.1U CN201420043784U CN203721649U CN 203721649 U CN203721649 U CN 203721649U CN 201420043784 U CN201420043784 U CN 201420043784U CN 203721649 U CN203721649 U CN 203721649U
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Abstract
The utility model provides an electromagnetic relay and a movable contact spring thereof. The electromagnetic relay comprises a contact assembly, an electromagnetic assembly, an armature assembly and a pushing card, the contact assembly is kept in a normally open state or a normally closed state under the action of magnetic attraction of a permanent magnet in the armature assembly; the switching of the normally open state or the normally closed state is triggered with pulse electrical signals, the armature assembly is driven by the electromagnetic assembly to drive the pushing card to displace, and the state of the contact assembly is switched through the displacement of the pushing card; a first end part of the moving contact spring in the contact assembly is fixedly connected to a leading-out sheet, and a moving contact is fixed to a second end part of the moving contact spring; the second end part of the moving contact spring is connected with the pushing card; and the moving contact spring comprises a plurality of laminated contact springs, and at least one reinforcing rib is formed on a second end part of one of the contact springs. The head part of each contact spring is additionally provided with concave-convex ribs, the head part of each contact spring is hardened optionally, and the mechanical strength of the contact springs is enhanced.
Description
Technical field
The utility model relates to relay, especially relates to electromagnetic relay and movable contact spring thereof that a kind of Reliability of Microprocessor is higher.
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.When the contact of relay need to be opened or close state (while switching on or off load), only need with positive and negative DC pulse voltage excitation coil, relay just completed and has opened and the conversion of closing state in moment.Conventionally contact is when 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.
Publication number is in CN101231923A Chinese invention patent, to disclose a kind of existing electromagnetic relay, please refers to Fig. 2, and this electromagnetic relay has contact system, electromagnetic system 10, base 11, push card 12, axle, fixed mount 14 and shell 15.Please refer to Fig. 2 and Fig. 3, above-mentioned base 11 is provided with reverse button 16, is also provided with reverse button 17 on above-mentioned shell 15, and this shell 15 and base 11 are by reverse button 16 and oppositely detain linking closely and being assembled together mutually between 17.
Please refer to Fig. 2, fixed mount 14 is installed in base 11; Electromagnetic system 10 comprises armature 18, permanent-magnet steel 19, injection-moulded housing 190, yoke 20 and bobbin 21.Armature 18, permanent-magnet steel 19 and injection-moulded housing 190 form armature component, and armature component is hubbed on fixed mount 14 by axle.During relay contact closure work, electromagnetic system 10 is adjusted push card 12 with armature component makes it produce the motive force f3 acting on movable contact spring 26.
Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 A and Fig. 4 B, contact system comprises that the first lead-out tablet 22, fixed contact 23, the second lead-out tablet 24, moving contact 25 and movable contact spring 26, the first lead-out tablets 22, the second lead-out tablet 24 and movable contact spring 26 process by stamping-out.The first lead-out tablet 22 has exit 27 and link, and the first lead-out tablet 22 links and fixed contact 23 are riveted together; The second lead-out tablet 24 has exit 28 and link, and the second lead-out tablet 24 links and movable contact spring 26 first ends are riveted together.Movable contact spring 26 can be comprised of three reeds, and from approaching moving contact 25 to be followed successively by first, second and the 3rd away from moving contact 25, the 3rd upper the second end tilts and form beveled end to thickness direction, on the 3rd beveled end, offers U-shaped groove.And movable contact spring 26 beveled ends and moving contact 25 are riveted together, making between the second lead-out tablet 24 and movable contact spring 26, the second lead-out tablet 24 is can not moving-conductor, movable contact spring 26 is can moving-conductor.On the first above-mentioned lead-out tablet 22 and the second lead-out tablet 24, be equipped with bayonet socket 29.Please refer to Fig. 1 and Fig. 2, first and second middle part at movable contact spring 26, be provided with separately a U-bend portion 31, and two U-bend portions 31 vary in size.
Please refer to Fig. 1, Fig. 2 and Fig. 3, the first accommodation seat and the second accommodation seat are set on base 11, on this first accommodation seat, the second accommodation seat, be equipped with guiding wedge-shaped slot 30.The first lead-out tablet 22 and fixed contact 23 are first riveted and are then assemblied in the first accommodation seat, and coordinate and assemble between the bayonet socket 29 by the first lead-out tablet 22 and guiding wedge-shaped slot 30, and the exit 27 of the first lead-out tablet 22 stretches out in outside base 11.The second lead-out tablet 24, moving contact 25 and movable contact spring 26 are first riveted and are then assemblied in the second accommodation seat, and coordinate and assemble between the bayonet socket 29 by the second lead-out tablet 24 and guiding wedge-shaped slot 30, and the exit 28 of the second lead-out tablet 24 stretches out in outside base 11.
Please refer to Fig. 1, Fig. 2 and Fig. 3, when relay contact closure is worked, contrary also interaction of the second lead-out tablet 24 and movable contact spring 26 sense of current i produces magnetic field, this magnetic field makes movable contact spring 26 produce electromagnetic force f1, the second lead-out tablet 24 is subject to electromagnetic force f2, and the electromagnetic force f1 producing is identical with the motive force f3 direction that push card 12 produces, electromagnetic force f1 and motive force f3 make a concerted effort in closing of contact direction, and this makes a concerted effort to make movable contact spring 26 to produce deformation, wherein, movable contact spring 26 deformation directions are towards fixed contact 23 or push card 12, movable contact spring 26 deformation precompressions provide overtravel.
More than introducing is the existing electromagnetic relay structure of a class and principle, and in existing electromagnetic relay, in electromagnetic system, the implementation method of yoke is, two L shaped yokes are contained in bobbin insert group, if publication number is to introduce in CN102388427A Chinese patent, with reference to Fig. 5, the coiler part of electromagnetic system comprises coil 4 and two L shaped yoke 41A, 41B, and yoke 41A, 41B be one-body molded yoke end 411 and insert-connecting plate 412.Coil 4 comprises the coil on bobbin and bobbin, is formed with the mesopore of perforation on bobbin.Yoke end 411 main body plates are all positioned at outside coil 4, and from the main body plate one side excitation end that vertically extends internally.Insert-connecting plate 412 is all a rectangular plate, and two insert-connecting plate 412 subtends are plugged in the mesopore of coil 4, two insert-connecting plate 412 cross lamination.
In realizing the utility model process, inventor finds that in prior art, at least there are the following problems:
Existing three-chip type movable contact spring 26, considers on the second end and will apply certain overtravel precompression to moving contact 23, and when push card 12 will be pulled open fixed contact 23 with moving contact 25 by movable contact spring 26 the second ends, movable contact spring 26 should have certain mechanical strength.But movable contact spring 26 is generally formed by stacking by multi-disc, when electromagnetic system 10 drives push card 12 to commutate, need to overcome the elastic force of a plurality of reeds simultaneously, existing movable contact spring agent structure is partially hard.
This existing yoke structure need be made respectively yoke 41A, 41B, after intersecting, two insert-connecting plates 412 naturally stick together, due to without any mechanical pretreatment method, between natural abutment face, can produce air gap, greatly increased the magnetic resistance on the excitation driver transfer path that coil produces.Though can make bobbin centre bore geometric shape and two insert-connecting plate 412 interference fit by reducing bobbin central hole size in existing way, reduce two air gaps between the natural abutment face of insert-connecting plate 412.Yet product, when the environment for use conditions such as storage, transportation or installation of high temperature, high humidity change, can cause bobbin contraction, distortion, distortion, can cause two insert-connecting plate 412 distortions, distortion.Can cause so the inside and outside working face of yoke 41A, 41B not at same plane, increased on the contrary the magnetic resistance of the excitation driver of coil generation, cause armature component cannot rotate to predetermined service position, increased again coil power dissipation, cause magnetic latching relay Reliability of Microprocessor greatly to reduce, cause the generation of security incident.Yoke 41A, 41B length dimension are larger, complex-shaped, increased the manufacture difficulty of yoke 41A, 41B, be unfavorable for producing in enormous quantities, simultaneously, baroque part easily deforms in processing, plating, transportation, the deterioration in accuracy of yoke, qualification rate step-down, finally cause magnetic latching relay manufacture difficulty to increase, manufacture fraction defective raising, product reliability variation, greatly increased the price of product.
And in existing electromagnetic relay, in electromagnetic system, the implementation method of armature is, two L shaped yokes are contained in bobbin insert group, if publication number is to introduce in CN102388427A Chinese patent, with reference to Fig. 6, Fig. 7, now with armature component, generally by the first armature 181, the second armature 182, the first permanent-magnet steel 191, the second permanent-magnet steel 192 and injection-moulded housing 190, formed.The first armature 181, the second armature 182 are parallel, and keep at a certain distance away, and the first permanent-magnet steel 191, the second permanent-magnet steel 192 are between the first armature 181, the second armature 182.Injection-moulded housing 190 is inlaid in the first armature 181, the second armature 182, the first permanent-magnet steel 191, the second permanent-magnet steel 192 and rotating shaft together, injection-moulded housing 190 leaves the axis hole with axle assembling, two magnet steel are symmetrically located at the both sides of axis hole, moreover can be positioned at housing 190 completely.
Because the first permanent-magnet steel 191 and the second permanent-magnet steel 192 objectively all can there are differences in physical dimension, can cause like this first armature 181 and the second armature 182 closely to recline with the first permanent-magnet steel 191 and the second permanent-magnet steel 192 simultaneously, also just increased the transmission magnetic resistance of the excitation driver of permanent-magnet steel generation simultaneously.Meanwhile, this existing structure also needs higher die cost, and very high to the requirement on machining accuracy of equipment.Finally cause that magnetic latching relay manufacture difficulty increases, manufactures that fraction defective is high, product reliability variation, the price of product of greatly having increased.
Prior art
Electromagnetic system 10, base 11, push card 12, fixed mount 14, shell 15, oppositely detain 16, oppositely detain 17, armature 18, permanent-magnet steel 19, injection-moulded housing 190, yoke 20, bobbin 21, the first lead-out tablet 22, fixed contact 23, the second lead-out tablet 24, moving contact 25, contact movable contact spring 26, exit 27, exit 28, bayonet socket 29, guiding wedge-shaped slot 30, reinforced sheet 31.
The utility model
Electromagnetic assembly 5, bobbin 51, mesopore 511, coil 52, the first yoke 53, the first yoke 531, the first yoke iron slice 532, the first hole 533, iron core 54, assembled portion 541, the second yoke 55, the second yoke 551, the second yoke iron slice 552, the second hole 553, armature component 6, the first armature 61, the second armature 62, permanent-magnet steel 63, the first rotating shaft 64, the second rotating shaft 65, embedding shell 66, fixed mount 67, push card 7, contact assembly 8, the first lead-out tablet 81, fixed contact 82, the second lead-out tablet 83, moving contact 84, movable contact spring 85, the first reed 851, the first slotted eye 8511, the first bending 8512, the first contact holes 8513, reinforcement 8514, the first leg 8515, the first riveted holes 8516, the second reed 852, the second slotted eye 8521, the second bending 8522, the second contact holes 8523, protuberance 8524, the second riveted holes 8525, the 3rd reed 853, the 3rd slotted eye 8531, the 3rd bending 8532, the 3rd contact holes 8533, U-shaped hole 8534, the second leg 8535, the 3rd riveted holes 8536.
Utility model content
The utility model object is on the one hand, for solving the too small technical problem of movable contact spring module body elastic force excessive end hardness in prior art electromagnetic relay.
The utility model object is on the one hand, in order to solve in prior art electromagnetic relay, mutual-inserting type yoke manufacture difficulty is large, poor reliability and the high problem of cost.
The utility model object is on the one hand, in order to solve in prior art electromagnetic relay, two magnet steel armature component manufacture difficulty are large, poor reliability and the high problem of cost.
The purpose of this utility model realizes like this: a kind of electromagnetic relay is provided on the one hand, comprise contact assembly, electromagnetic assembly, armature component and push card, with the magnetic effect of permanent-magnet steel in described armature component, described contact assembly keeps 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, by described push card displacement, makes described contact assembly transition status; Described contact assembly comprises the first lead-out tablet, fixed contact, the second lead-out tablet, moving contact and movable contact spring; Described fixed contact is fixed on described the first lead-out tablet; Described movable contact spring first end is fixedly connected on described the second lead-out tablet first end, and described moving contact is fixed on described movable contact spring the second end; Described movable contact spring the second end 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; Described movable contact spring comprises the first reed, the second reed and the 3rd reed; The second end of described the first reed connects described moving contact, the contiguous described armature component of described the 3rd reed, and described the second reed is between described the first reed and the 3rd reed; On the second end of described the first reed, form reinforcement along the length direction.。
A kind of electromagnetic relay is provided on the other hand, 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, by described push card displacement, makes described contact assembly transition status; Described contact assembly comprises the first lead-out tablet, fixed contact, the second lead-out tablet, moving contact and movable contact spring; Described fixed contact is fixed on described the first lead-out tablet; Described movable contact spring first end is fixedly connected on described the second lead-out tablet first end, and described movable contact spring is between described the first lead-out tablet and described the second lead-out tablet, and described moving contact is fixed on described movable contact spring the second end; Described movable contact spring the second end 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; Described movable contact spring comprises the first reed, the second reed and the 3rd reed; The second end of described the first reed connects described moving contact, the contiguous described armature component of described the 3rd reed, and described the second reed is between described the first reed and the 3rd reed; On the second end of described the first reed, form at least one reinforcement.
According to above-mentioned design, described the first reed, the second reed and the 3rd reed all have slotted eye along the length direction.
According to above-mentioned design, on the second end of described the first reed, form two reinforcements along the length direction, described reinforcement is positioned at the both sides of described moving contact tie point.
According to above-mentioned design, described the first reed middle part forms the first bending of a U-shaped; Described the second reed middle part forms the second bending of a U-shaped; Described the 3rd reed middle part forms the 3rd bending of a U-shaped; Described the first bending, the second bending and the 3rd bending are all positioned at the same side and aligned in position, all perpendicular to described movable contact spring length direction.
According to above-mentioned design, described the first bending is greater than described the second bending, and described the second bending is greater than described the 3rd bending, between described the first bending, the second bending and the 3rd bending, with gap, separates.
According to above-mentioned design, described electromagnetic assembly comprises bobbin, coil, the first yoke, iron core and the second yoke, and described iron core penetrates the mesopore of described bobbin, to be assembled in described bobbin; Described the first yoke and the second yoke are installed on respectively the two ends of described bobbin, and described the first yoke and the second yoke are connected to described iron core two ends.
According to above-mentioned design, described the first yoke comprises the first yoke, described the second yoke comprises the second yoke, the interior working surface place of the interior working surface of described the first yoke and the second yoke in one plane, the outer working surface of described the first yoke and the outer working surface of the second yoke are in another plane, described coil produces the first excitation driver, and the path that described the first excitation driver forms by iron core, the first yoke, the second yoke is sent to the inside and outside working surface of the first yoke of the first yoke and the second yoke of the second yoke.
According to above-mentioned design, described iron core two ends form the assembled portion that protrudes from described bobbin two ends; Described the first yoke has the first yoke iron slice and described the first yoke; Described the second yoke has the second yoke iron slice and described the second yoke; Described the first yoke iron slice and the second yoke iron slice are riveted or welding with the assembled portion of described iron core respectively.
According to above-mentioned design, described armature component comprises the first armature, the second armature, permanent-magnet steel, the first rotating shaft, the second rotating shaft and embedding shell; Described permanent-magnet steel is clipped between the first armature and the second armature, the first armature and the second armature abut in the both sides of permanent-magnet steel, described permanent-magnet steel is contained in embedding shell, described the first rotating shaft, the second rotating shaft are separately positioned on described embedding shell upper and lower surface, the dead in line of the axis of described the first rotating shaft and described the second rotating shaft.
According to above-mentioned design, described permanent-magnet steel is a monomer, the dead in line of described permanent-magnet steel axle center and described the first rotating shaft and the second rotating shaft, and described permanent-magnet steel axle center and described the first yoke and the second yoke longitudinal center line in the same plane.
According to above-mentioned design, described permanent-magnet steel forms the second excitation driver, and described the second excitation driver is sent to respectively the inside and outside working surface of described the first yoke and the second yoke by described the first armature and the second armature; In described the first yoke, the interior working surface of the outer working surface of working surface, described the second yoke or the outer working surface of the first yoke, the second yoke is produced magnetic repulsion or magnetic attraction.
The utility model provides a kind of movable contact spring of electromagnetic relay on the other hand, and described movable contact spring first end is fixedly connected on a lead-out tablet, and a moving contact is fixed on described movable contact spring the second end; Described movable contact spring the second end is connected with a push card; Described movable contact spring comprises a plurality of superimposed reeds, wherein described in one, on the second end of reed, forms two reinforcements.
According to above-mentioned design, described a plurality of reeds all have slotted eye along the length direction.
According to above-mentioned design, described reinforcement is the convex tendon of two suitable described length of spring leaf directions, and described reinforcement is positioned at the both sides of described moving contact tie point.
The utility model provides a kind of movable contact spring of electromagnetic relay on the other hand, and described movable contact spring first end is fixedly connected on a lead-out tablet, and a moving contact is fixed on described movable contact spring the second end; Described movable contact spring the second end is connected with a push card; On the second end of described movable contact spring, form at least one along described movable contact spring length direction reinforcement.
Each embodiment of the utility model is with respect to the beneficial effect of prior art:
In the utility model, three of scheme movable contact springs adopt the design of U-bend folding, have improved the flexibility of reed, can add concavo-convex muscle near each reed head (contact) simultaneously, and alternative makes the hardening of reed head, improves the mechanical performance of reed.
In the utility model, a scheme adopts " round iron core " design, greatly improve the magnetic conduction ability of magnetic circuit system, adopted the mode of the riveted joint of yoke and iron core, not only can reduce the leakage field of magnetic circuit system, improved armature confining force simultaneously, made relay performance more stable.
The design of scheme employing " single magnet steel " the protruding axle in outer end in the utility model, compare with the design of prior art " two magnet steel add axis ", adopt single magnet steel, armature, rotating shaft integrated injection molding, not only reduced cost, reduce assembly process, reduced assembly accumulation error simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the fundamental diagram of existing electromagnetic relay contact system.
Fig. 2 is the structural representation that each parts of existing electromagnetic relay decompose.
Fig. 3 is the assembling schematic diagram of existing electromagnetic relay.
Fig. 4 A is the schematic perspective view of existing electromagnetic relay movable contact spring.
Fig. 4 B is the schematic side view of existing electromagnetic relay movable contact spring.
Fig. 5 is the parts decomposition texture schematic diagram of existing electromagnetic relay coil assembly.
Fig. 6 is existing armature component plan structure schematic diagram.
Fig. 7 is the sectional structure schematic diagram along D-D line in Fig. 6.
Fig. 8 is the assembling schematic diagram of electromagnetic relay in the utility model embodiment.
Fig. 9 is each parts decomposition texture schematic diagram of electromagnetic relay in the utility model embodiment.
Figure 10 is the parts decomposition texture schematic diagram of electromagnetic relay electromagnetic assembly in the utility model embodiment.
Figure 11 is armature component plan structure schematic diagram in the utility model embodiment.
Figure 12 is the sectional structure schematic diagram along A-A line in Fig. 6.
Figure 13 is the first reed plan structure schematic diagram in the utility model embodiment.
Figure 14 is the broken section structural representation along A-A line in Figure 13.
Figure 15 is the first reed perspective view in the utility model embodiment.
Figure 16 is the second reed perspective view in the utility model embodiment.
Figure 17 is the 3rd reed perspective view in the utility model embodiment.
Label declaration:
Embodiment
The exemplary embodiments that embodies the utility model feature & benefits will describe in detail in the following description.Be understood that the utility model can have various variations on different embodiment, it neither departs from scope of the present utility model, and explanation wherein and to be shown in be when the use that explain in essence, but not in order to limit the utility model.
The utility model embodiment provides a kind of electromagnetic relay, the functional component in housing and housing, consists of.Housing comprises shell 91 and base 92.Please refer to Fig. 8 and Fig. 9, on above-mentioned base 92, can be provided with a plurality of lower buckles 921, also can be provided with corresponding upper buckle 911 on above-mentioned shell 91, this shell 91 and base 92 are mutually linked closely and are assembled together by upper buckle 911 and lower buckle 921.
As shown in Figure 8, Figure 9, the functional component of electromagnetic relay comprises electromagnetic assembly 5, armature component 6, push card 7 and contact assembly 8, with the magnetic effect of the interior permanent-magnet steel 63 of armature component 6, can make contact assembly 8 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 5 to drive armature components 6 to drive push card 7 displacements, and the displacement by push card 7 makes contact assembly 8 conversion normally open or normally offs.
As shown in Figure 9, Figure 10, in the utility model embodiment, electromagnetic assembly 5 comprises bobbin 51, coil 52, the first yoke 53, iron core 54 and the second yoke 55, iron core 54 can be cylindrical electromagnetic pure iron iron core, with iron core 54, penetrate the mesopore 511 of bobbin 51, iron core 54 can with mesopore 511 interference fit, to be assembled in bobbin 51.And the first yoke 53 and the second yoke 55 are connected to the two ends of bobbin 51 by iron core 54.
Particularly, as shown in figure 10, iron core 54 two ends form the shaft extension shape assembled portion 541 that protrudes from bobbin 51 two ends; The first yoke 53 has the first yoke 531, the first yoke iron slice 532 and is opened in the first hole 533 on the first yoke iron slice 532.The second yoke 55 has the second yoke 551, the second yoke iron slice 552 and is opened in the second hole 553 on the second yoke iron slice 552.The first hole 533 on the first yoke iron slice 532 and the second hole 553 of the second yoke iron slice 552 supply respectively the assembled portion 541 at the two ends of iron core 54 to wear group, are riveted together afterwards again.Certainly, yoke also can be selected to utilize as existing interconnection techniques such as the securing members such as bolt, buckle, jump ring are spirally connected, engage with the connected mode of iron core, even can select the connected mode of welding, not as limit.
In the utility model embodiment, the interior working surface of the interior working surface of the first yoke 531 and the second yoke 551 will be located in one plane, and the outer working surface of the outer working surface of the first yoke 531 and the second yoke 551 will be in another plane.Coil 52 can produce the first excitation driver, and the path that the first excitation driver forms by iron core 54, the first yoke 53, the second yoke 55 is sent to the inside and outside working surface of the first yoke 531 of the first yoke 53 and the second yoke 551 of the second yoke 55.
In the utility model embodiment, the first yoke, the second yoke and iron core one piece construction are simple, dimensional accuracy easily guarantees, reduced magnetic resistance, improved magnetic efficiency, be conducive to miniaturization, the energy-saving design of product, not high to mould, process equipment required precision, manufacturing expense price is low, product reliability easily guarantees, is conducive to production in enormous quantities and the marketing of magnetic latching relay.
As shown in Figure 11, Figure 12, in the utility model embodiment, armature component 6 comprises permanent-magnet steel 63, the first rotating shaft 64, the second rotating shaft 65, the injection moulding embedding shell 66 of the first armature 61, the second armature 62, a monomer.Permanent-magnet steel 63 is clipped between the first armature 61 and the second armature 62, the first armature 61 and the second armature 62 abut in the both sides of permanent-magnet steel 63, permanent-magnet steel 63 is contained in embedding shell 66, the first rotating shaft 64, the second rotating shaft 65 are formed on embedding shell 66 upper and lower surfaces, the dead in line of the axis of the first rotating shaft 64 and the second rotating shaft 65 respectively one-body moldedly.Embedding shell 66 can be injection moulding and forms, and the first armature 61, the second armature 62 and permanent-magnet steel 63 can be used as inserts and be fixed in embedding shell 66, and the first rotating shaft 64, the second rotating shaft 65 also can form with 66 injection mouldings simultaneously of embedding shell.
Fixed mount 67 is strip parts, and middle part can have the axis hole of a confession the first rotating shaft 64 pivot joints, and fixed mount 67 parts are prior art structure, do not repeat them here.Spacing being articulated in fixed mount 67 of the first rotating shaft 64 of armature component 6, the second 65, rotating shaft is articulated in the axis hole of base 92 bottom correspondences, makes armature component 6 driven by electromagnetic assembly 5 and rotates.
Here permanent-magnet steel 63 can form the second excitation driver, and the second excitation driver is sent to respectively the inside and outside working surface of the first yoke 531 and the second yoke 551 by the first armature 61 and the second armature 62; Interior working surface in the outer working surface of the interior working surface of the first yoke 531, the second yoke 551 or the outer working surface of the first yoke 531, the second yoke 551 is produced magnetic repulsion or magnetic attraction (Magnetic Control is existing scheme, therefore do not repeat them here).This one pushes away that a direction of pull is contrary, equal and opposite in direction, makes this armature component around the axis of the first rotating shaft, the second rotating shaft steadily, rotate smoothly, thereby has improved the Reliability of Microprocessor of magnetic latching relay.
Can stretch an actuator arm 68 at the second armature 62 1 epitaxial lateral overgrowths, its movable push card 7 that is connected in, in the present embodiment, be to stretch in the storage tank of push card 7 inner sides with actuator arm 68, and also can fix a metal clips between actuator arm 68 and push card 7, flexibly to compress the connection of the two, make this connection there is certain elasticity.
As shown in Figure 9, in the utility model embodiment, contact assembly 8 comprises the first lead-out tablet 81, fixed contact 82, the second lead-out tablet 83, moving contact 84 and movable contact spring 85.The first lead-out tablet 81 can be riveted or be fixedly welded on to fixed contact 82.Movable contact spring 85 first ends can rivet or be welded and fixed and be connected in the second lead-out tablet 83 first ends, and movable contact spring 85 can be between the first lead-out tablet 81 and the second lead-out tablet 83, and movable contact spring 85 the second ends can be riveted or be fixedly welded on to moving contact 84.Movable contact spring 85 the second ends fix and connect push card 7, and push card 7 is connected in armature component 6 with the other end, and corresponding fixed contact 82 is wanted in the position of moving contact 84.
Certainly, the concrete quantity of lead-out tablet can be adjusted according to actual needs, can be 1 group, also can be 2 groups, and as long as movable contact spring is located between paired lead-out tablet, and the concrete set-up mode of push card is because be not emphasis of the present utility model, does not limit yet.
Movable contact spring 85 comprises the first reed 851, the second reed 852 and the 3rd reed 853; The second end of the first reed 851 directly connects contiguous armature component 6, the second reeds 852 of moving contact 84, the three reed 853 between the first reed 851 and the 3rd reed 853.
As shown in FIG. 13 to 15, on the first reed 851, be formed with the first slotted eye 8511, the first bending the 8512, first contact holes 8513 and reinforcement 8514.The first slotted eye 8511 is the strip holes along the first reed 851 length directions, and integral body is positioned at the first reed 851 inside, and position more approaches the first end of the first reed 851, and the location optimization on Width is placed in the middle.The first reed 851 middle parts are formed with the first position that bends 8512, the first bendings 8512 of U-shaped closer to the second end.The first contact holes 8513 is formed in a round tube hole on the second end of the first reed 851, and it is worn group for moving contact 84 and connects, and outside by these the first contact holes 8513 home position alignment place, the second end bilateral symmetry of the first reed 851 narrows.Reinforcement 8514 is formed on the second end of the first reed 851, can be two punching press convex tendons along the length direction, and preferably, reinforcement 8514 is symmetrically located at the both sides of the first contact holes 8513.Preferably, reinforcement 8514 is slightly longer than the longitudinal length that inclined-plane is narrowed in the second end both sides, namely at the second end, be subject between push card 7 clamping positions and the first contact holes 8513, by two reinforcements 8514, improve mechanical strength, and two reinforcement 8514 the inners are to have surpassed the first contact holes 8513 home positions, but just slightly exceed, can not exceed the first inner edge of contact holes 8513, avoid the inner situation overlapping with first contact holes 8513 centers of circle of two reinforcements 8514.Preferably, reinforcement 8514 is the arc punching press convex tendons that protrude towards the first lead-out tablet 81, recessed on another side.
On the second end of the first reed 851, towards the first lead-out tablet 81, form one first leg 8515.Preferably on the first reed 851 first ends, also offer a plurality of the first riveted holes 8516, so that fixing with the second lead-out tablet 83 riveted joints.
As shown in figure 16, the second reed 852 is formed with the second slotted eye 8521, the second bending the 8522, second contact holes 8523 and protuberance 8524.The second slotted eye 8521 is the strip holes along the second reed 852 length directions, and integral body is positioned at the second reed 852 inside, and the second slotted eye 8521 length and width are identical with the first slotted eye 8511.The second reed 852 middle parts are formed with the second position that bends 8522, the second bendings 8522 of U-shaped closer to the second end.The second contact holes 8523 is formed in a round tube hole on the second end of the second reed 852, and it is worn group for moving contact 84 and connects.Semicircular protuberance 8524 is formed on the second end of the second reed 852, and the second contact holes 8523 is preferably the circle centre position that is positioned at protuberance 8524.Preferably on the second reed 852 first ends, also offer a plurality of the second riveted holes 8525, so that fixing with the second lead-out tablet 83 riveted joints.
As shown in figure 17, on the 3rd reed 853, be formed with the 3rd slotted eye 8531, the 3rd bending the 8532, the 3rd contact holes 8533 and U-shaped hole 8534.The 3rd slotted eye 8531 is the strip holes along the 3rd reed 853 length directions, and integral body is positioned at the 3rd reed 853 inside, and position more approaches the first end of the 3rd reed 853, and the location optimization on Width is placed in the middle.The 3rd reed 853 middle parts are formed with the first position that bends 8532, the first bendings 8532 of U-shaped closer to the second end.The first contact holes 8533 is formed in a round tube hole on the second end of the 3rd reed 853, and it is worn group for moving contact 84 and connects, and outside by the 3rd contact holes 8533 circle centre positions, the second end bilateral symmetry of the 3rd reed 853 narrows.U-shaped hole 8534 is formed on the second end of the 3rd reed 853, and U-shaped hole 8534 is around the 3rd contact holes 8533, and U-shaped hole 8534 opening surfaces are to movable contact spring 85 first ends.On the second end of the 3rd reed 853, towards the second lead-out tablet 83, form one second leg 8535.Preferably on the 3rd reed 853 first ends, also offer a plurality of the 3rd riveted holes 8536, so that fixing with the second lead-out tablet 83 riveted joints.
First bending the 8512, second bending the 8522 and the 3rd bending 8532 wherein can all be positioned at the same side and aligned in position, can be all perpendicular to movable contact spring 85 length directions.The first bending 8512 is greater than the second bending 8522, the second bending 8522 and is greater than between the 3rd bending 8532, the first bending the 8512, second bending the 8522 and the 3rd bendings 8532 and separates with gap.
So, with the slotted eye being arranged on each reed, can make each reed main body deliquescing, the elastic resistance when reducing electromagnetic assembly and driving contact assembly commutation, reduces to make the power of the actuating of relay.And the reinforcement of the second end configured length direction of the first reed can improve the mechanical strength of the first reed herein, when contact separation, can improve the supporting force to moving contact herein, thereby improve the Reliability of Microprocessor of magnetic latching relay.
In the utility model embodiment, adopt " round iron core " design, greatly improve the magnetic conduction ability of magnetic circuit system, adopted the mode of the riveted joint of yoke and iron core, not only can reduce the leakage field of magnetic circuit system, improved armature confining force simultaneously, made relay performance more stable.
In the utility model embodiment, adopt the design of " single magnet steel " protruding axle in outer end, compare with the design of prior art " two magnet steel add axis ", adopt single magnet steel, armature, rotating shaft integrated injection molding, not only reduced processing cost, reduce assembly process, reduced assembly accumulation error simultaneously.
In the utility model embodiment, three movable contact springs adopt the design of U-bend folding, have improved the flexibility of reed, can add concavo-convex muscle near each reed head (contact) simultaneously, and alternative makes the hardening of reed head, has improved the mechanical strength of reed.
The above, it is only the utility model preferred embodiment, therefore can not limit the scope that the utility model is implemented with this, the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (19)
1. an electromagnetic 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, by described push card displacement, makes described contact assembly transition status; It is characterized in that:
Described contact assembly comprises the first lead-out tablet, fixed contact, the second lead-out tablet, moving contact and movable contact spring; Described fixed contact is fixed on described the first lead-out tablet; Described movable contact spring first end is fixedly connected on described the second lead-out tablet first end, and described moving contact is fixed on described movable contact spring the second end; Described movable contact spring the second end 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;
Described movable contact spring comprises the first reed, the second reed and the 3rd reed; The second end of described the first reed connects described moving contact, the contiguous described armature component of described the 3rd reed, and described the second reed is between described the first reed and the 3rd reed; On the second end of described the first reed, form reinforcement along the length direction.
2. electromagnetic relay according to claim 1, is characterized in that: described movable contact spring is between described the first lead-out tablet and described the second lead-out tablet.
3. electromagnetic relay according to claim 1, is characterized in that: described the first reed, the second reed and the 3rd reed all have slotted eye along the length direction.
4. electromagnetic relay according to claim 1, is characterized in that: on the second end of described the first reed, form two described reinforcements, described reinforcement is positioned at the both sides of described moving contact tie point.
5. according to the electromagnetic relay described in claim 1 to 4 any one, it is characterized in that: described the first reed middle part forms the first bending of a U-shaped; Described the second reed middle part forms the second bending of a U-shaped; Described the 3rd reed middle part forms the 3rd bending of a U-shaped; Described the first bending, the second bending and the 3rd bending are all positioned at the same side and aligned in position, all perpendicular to described movable contact spring length direction.
6. electromagnetic relay according to claim 5, is characterized in that: described the first bending is greater than described the second bending, and described the second bending is greater than described the 3rd bending, between described the first bending, the second bending and the 3rd bending, with gap, separates.
7. electromagnetic relay according to claim 1, is characterized in that: described electromagnetic assembly comprises bobbin, coil, the first yoke, iron core and the second yoke, and described iron core penetrates the mesopore of described bobbin, to be assembled in described bobbin; Described the first yoke and the second yoke are installed on respectively the two ends of described bobbin, and described the first yoke and the second yoke are connected to described iron core two ends.
8. electromagnetic relay according to claim 7, it is characterized in that: described the first yoke comprises the first yoke, described the second yoke comprises the second yoke, the interior working surface place of the interior working surface of described the first yoke and the second yoke in one plane, the outer working surface of described the first yoke and the outer working surface of the second yoke are in another plane, described coil produces the first excitation driver, described the first excitation driver passes through iron core, the first yoke, the path that the second yoke forms be sent to the first yoke of the first yoke and the second yoke of the second yoke in, outer working surface.
9. electromagnetic relay according to claim 8, is characterized in that: described iron core two ends form the assembled portion that protrudes from described bobbin two ends; Described the first yoke has the first yoke iron slice and described the first yoke; Described the second yoke has the second yoke iron slice and described the second yoke; Described the first yoke iron slice and the second yoke iron slice are riveted or welding with the assembled portion of described iron core respectively.
10. electromagnetic relay according to claim 8, is characterized in that: described armature component comprises the first armature, the second armature, permanent-magnet steel, the first rotating shaft, the second rotating shaft and embedding shell; Described permanent-magnet steel is clipped between the first armature and the second armature, the first armature and the second armature abut in the both sides of permanent-magnet steel, described permanent-magnet steel is contained in embedding shell, described the first rotating shaft, the second rotating shaft are separately positioned on described embedding shell upper and lower surface, the dead in line of the axis of described the first rotating shaft and described the second rotating shaft.
11. electromagnetic relays according to claim 10, it is characterized in that: described permanent-magnet steel is a monomer, the dead in line of described permanent-magnet steel axle center and described the first rotating shaft and the second rotating shaft, and described permanent-magnet steel axle center and described the first yoke and the second yoke longitudinal center line in the same plane.
12. electromagnetic relays according to claim 11, it is characterized in that: described permanent-magnet steel forms the second excitation driver, described the second excitation driver is sent to respectively the inside and outside working surface of described the first yoke and the second yoke by described the first armature and the second armature; In described the first yoke, the interior working surface of the outer working surface of working surface, described the second yoke or the outer working surface of the first yoke, the second yoke is produced magnetic repulsion or magnetic attraction.
The movable contact spring of 13. 1 kinds of electromagnetic relays, described movable contact spring first end is fixedly connected on a lead-out tablet, and a moving contact is fixed on described movable contact spring the second end; Described movable contact spring the second end is connected with a push card; It is characterized in that,
Described movable contact spring comprises a plurality of superimposed reeds, wherein described in one, on the second end of reed, forms two reinforcements.
14. movable contact springs according to claim 13, is characterized in that: described reinforcement is the convex tendon of two suitable described length of spring leaf directions, and described reinforcement is positioned at the both sides of described moving contact tie point.
15. according to the movable contact spring described in claim 13 or 14, it is characterized in that: described a plurality of reeds all have slotted eye along the length direction.
The movable contact spring of 16. 1 kinds of electromagnetic relays, described movable contact spring first end is fixedly connected on a lead-out tablet, and a moving contact is fixed on described movable contact spring the second end; Described movable contact spring the second end is connected with a push card; It is characterized in that, on the second end of described movable contact spring, form at least one along described movable contact spring length direction reinforcement.
17. movable contact springs according to claim 16, is characterized in that: described movable contact spring comprises a plurality of superimposed reeds, and described reinforcement is arranged on the second end of a reed wherein.
18. movable contact springs according to claim 17, is characterized in that: described reinforcement is the convex tendon of two suitable described length of spring leaf directions, and described reinforcement is positioned at the both sides of described moving contact tie point.
19. movable contact springs according to claim 18, is characterized in that: described reed has slotted eye along the length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420043784.1U CN203721649U (en) | 2014-01-23 | 2014-01-23 | Electromagnetic relay and movable contact spring thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420043784.1U CN203721649U (en) | 2014-01-23 | 2014-01-23 | Electromagnetic relay and movable contact spring thereof |
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| CN203721649U true CN203721649U (en) | 2014-07-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794415A (en) * | 2014-01-23 | 2014-05-14 | 厦门宏发电力电器有限公司 | Electromagnetic relay and movable contact spring thereof |
| CN104091706A (en) * | 2014-07-29 | 2014-10-08 | 厦门宏发电力电器有限公司 | Relay and arc protection structure thereof |
| CN107134392A (en) * | 2017-06-06 | 2017-09-05 | 广西睿奕科技发展有限公司 | It is a kind of can cut off the one of zero line and live wire simultaneously and enter four go out type two-way magnetic latching relay |
| CN110323106A (en) * | 2018-03-29 | 2019-10-11 | 厦门台松精密电子有限公司 | Movable elastic piece structure and its relay |
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2014
- 2014-01-23 CN CN201420043784.1U patent/CN203721649U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794415A (en) * | 2014-01-23 | 2014-05-14 | 厦门宏发电力电器有限公司 | Electromagnetic relay and movable contact spring thereof |
| CN103794415B (en) * | 2014-01-23 | 2017-04-05 | 厦门宏发电力电器有限公司 | electromagnetic relay and its movable contact spring |
| CN104091706A (en) * | 2014-07-29 | 2014-10-08 | 厦门宏发电力电器有限公司 | Relay and arc protection structure thereof |
| CN104091706B (en) * | 2014-07-29 | 2016-08-10 | 厦门宏发电力电器有限公司 | A kind of relay and arc protection structure thereof |
| CN107134392A (en) * | 2017-06-06 | 2017-09-05 | 广西睿奕科技发展有限公司 | It is a kind of can cut off the one of zero line and live wire simultaneously and enter four go out type two-way magnetic latching relay |
| CN110323106A (en) * | 2018-03-29 | 2019-10-11 | 厦门台松精密电子有限公司 | Movable elastic piece structure and its relay |
| CN110323106B (en) * | 2018-03-29 | 2021-03-02 | 厦门台松精密电子有限公司 | Movable spring plate structure and relay thereof |
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Granted publication date: 20140716 |