EP3516676A1 - Relais electromagnetique - Google Patents

Relais electromagnetique

Info

Publication number
EP3516676A1
EP3516676A1 EP17768417.2A EP17768417A EP3516676A1 EP 3516676 A1 EP3516676 A1 EP 3516676A1 EP 17768417 A EP17768417 A EP 17768417A EP 3516676 A1 EP3516676 A1 EP 3516676A1
Authority
EP
European Patent Office
Prior art keywords
contact
armature
coil
relay
actuators
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17768417.2A
Other languages
German (de)
English (en)
Other versions
EP3516676B1 (fr
Inventor
Herbert Elsinger
Markus Bichler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Industrial Devices Europe GmbH
Original Assignee
Panasonic Industrial Devices Europe GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Industrial Devices Europe GmbH filed Critical Panasonic Industrial Devices Europe GmbH
Publication of EP3516676A1 publication Critical patent/EP3516676A1/fr
Application granted granted Critical
Publication of EP3516676B1 publication Critical patent/EP3516676B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/443—Connections to coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/643—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rotating or pivoting movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature

Definitions

  • the invention relates to an electromagnetic relay, in particular a safety relay, comprising a base body, a coil arranged on the base body with a coil and a yoke, which extends along a winding axis of the coil therethrough, and with an armature which is pivotally mounted on an armature bearing axis is and which pole pieces for magnetic coupling with the yoke of the coil system, and having a contact system with at least two contact springs, wherein the armature are arranged actuators, which are associated with the contact springs to actuate the contact springs upon movement of the armature, d. H. to open or close the corresponding contacts of the contact springs by the movement of the contact springs.
  • Such relays are known in practice in various designs.
  • NC normally closed contact
  • NO normally open associated Contact
  • Positive guidance or a suitable arrangement of the actuators on the armature ensures that normally closed and normally closed contacts can not be closed at the same time. In particular, the arrangement is such that the opening of the opener always precedes the closing of the shutter and this happens not at the same time or even vice versa.
  • the contact springs of the contact system must therefore have a relatively large stroke, resulting in corresponding path lengths of the actuator. This in turn requires a sufficiently large construction of the entire relay.
  • the electromagnetic relay has a main body and a coil system arranged on the main body with at least one coil and a yoke which extends along a winding axis, i. H. the longitudinal axis, the coil extending through it.
  • a coil system or so a coil assembly can be constructed by first the yoke is encapsulated with the formation of a spool core with plastic in an injection molding process and then formed coil core or bobbin is then wrapped with the coil wire to form the coil.
  • the electromagnetic relay has an armature which is arranged pivotably mounted next to the coil, so outside the coil to an armature bearing axis and which has the pole pieces for magnetic coupling with the yoke of the coil system.
  • the yoke of the coil system is static and is poled by applying a voltage to the coil winding accordingly magnetically so that the resting at rest pole shoes of the armature repelled due to their coupling with one or more permanent magnets and then in the opposite position (the working position), which leads to the movement of the armature about the armature bearing axis.
  • the electromagnetic relay comprises a contact system with at least the two contact springs mentioned above.
  • the arrangement of these contact springs is such that a spring movement plane, in which the flexible contact springs or the movable resilient part of the contact springs each extend along a main extension direction, extends transversely, preferably substantially at right angles, to the winding axis of the coil.
  • the "spring action plane” can be defined here such that the movable part of the contact spring moves from the open position into the closed position. move the contact in this plane or covers an area in this level.
  • the spring movement plane can pass through define this fixed connection point, the point at which the contact is closed, and the point at which the contact head of the spring is in the open state.
  • the term "main extension direction" here is to be understood as the direction in which a movable part or flexible arm of the contact spring extends substantially.
  • the contact system can therefore at least two contacts, namely z. B. an opener and a closer, each comprising at least one of these contact springs and an associated mating contact.
  • the mating contact is preferably a stationary, d. H. a substantially fixed, contact body against which the flexible contact spring is pressed to close the contact and is lifted from this. In this case, the contact spring is then moved in the spring movement plane or flexibly bent away from the mating contact or bent against the mating contact, depending on which construction is exactly present.
  • the spring movement plane or the main extension direction of the flexible contact springs and the winding axis so (in a view from above the relay) the projections of the main extension direction or a longitudinal axis of the contact springs and the projections of the winding axis on a base surface of the body, with the this in turn is arranged in the installed state on a board, transverse, preferably perpendicular to each other.
  • At least two actuators are arranged on the armature, which are each assigned to the contact springs for actuating the contact springs, that act on these contact springs or the movable, flexible parts of the contact springs and thus can move the contact springs in the spring movement plane.
  • These actuators extend at the armature with respect to the armature bearing axis radially outwardly in a longitudinal direction of the armature, d. H. away from the armature bearing axis.
  • the radially outermost ends of the two actuators (seen in the longitudinal direction of the armature) are further away from the armature bearing axis than the pole shoes of the armature.
  • the relay can be designed as a safety relay and, in particular, the contact springs at the opposite ends of the armature can be assigned a normally closed contact and an associated closer, since the contact springs can be forcibly guided via the armature.
  • the relay according to the invention is preferably used as a safety relay in a safety circuit.
  • the relay is constructed such that the spring movement planes of at least one of the contact springs are substantially parallel to the armature bearing axis, d. H. that the armature bearing axis runs in the usual tolerances parallel to the spring movement plane.
  • the main extension direction of the respective contact spring extends substantially parallel to the armature bearing axis in the sense that the projections of the longitudinal axis of the contact spring and the armature bearing axis on the base surface of the main body of the relay run parallel.
  • the two longitudinal axes of the contact spring and the armature bearing axis parallel and preferably the winding axis of the coil perpendicular Due to the fact that the contact springs and the armature bearing axis run essentially parallel next to one another, a particularly space-saving construction is likewise achieved.
  • the spring movement planes of the two contact springs are substantially parallel to one another.
  • the armature bearing axis extends in its imaginary extension through the coil. Whether there is a height offset between the imaginary extension of the armature bearing axis and the winding axis, however, depends on the exact construction of the armature. If, for example, in a preferred variant, an H-shaped anchor is used, which has a total of four pole pieces, which are arranged so that always two pole pieces embrace one end of the yoke of the coil system and consequently always two pole pieces on opposite sides of the yoke with a pole face of the yoke In contact, it is preferred that the armature bearing axis cross in its extension and the Jochffenachse.
  • the armature bearing axis may be such that it is vertically displaced in its extension relative to the Jochffenachse with respect to the base surface of the Basic body of the relay is.
  • the armature bearing axle below the central axis of the yoke, ie between the yoke central axis and the base surface of the main body of the relay.
  • the armature bearing axis can also lie above the Jochstoffachse, ie between Jochffenachse and housing top.
  • the armature is formed so that the pole pieces are angled or bent from the longitudinal direction of the armature to the coil.
  • the armature as magnetically active cores or core pieces, which form the pole pieces at the end, U-shaped body.
  • a U-shaped core is needed here.
  • the armature or armature angled or bent yoke it is possible to form the pole faces as large as possible, so that the best possible magnetic flux is achieved.
  • the U-shaped core pieces can also have unequal length U legs.
  • pole pieces of the yoke are angled towards the anchor and the anchor has no or only a slight bend.
  • a combination of both variants is possible, since the requirements in tightened and fallen position may be different in terms of the size of the overlap of the pole pieces.
  • the core pieces can themselves be permanent magnets.
  • these U-shaped core pieces are iron parts, in particular soft iron parts.
  • anchor Permanent magnets may be incorporated in the body, which then provide magnetic flux through the soft iron core pieces.
  • the actuators extend in the longitudinal direction of the armature outwardly beyond the pole pieces away from the armature bearing axis.
  • these actuators are fixed, in particular rotationally fixed, connected to the armature.
  • they are integrally formed with the anchor, for example, together with the anchor produced by injection molding.
  • the core pieces or the core pieces are injection-molded in an injection molding process for producing the anchor body, wherein at the same time the actuators, For example, in the form of actuator arms or a kind of end-side stubs, be injected with the anchor body.
  • the actuators on the armature and the contact springs are each formed and arranged so that a contact spring is pushed away in each case by its associated actuator for opening the respective contact of one of the respective contact spring associated mating contact.
  • the actuator thus displaces the contact head of the contact spring, that is to say the part of the contact spring which comes into contact with the mating contact, away from the mating contact in the movement plane.
  • the contact springs extend transversely or advantageously perpendicular to the armature longitudinal axis like a bridge over the actuator arms. Seen from the base surface then so the contact springs extend above the armature longitudinal axis and the contact springs are pushed away to open upwards.
  • the arrangement is such that the actuator in the respective closed state of the contact still has some distance from the contact spring, that is not in contact with the contact spring in this position.
  • an anchor bearing in which the armature is pivotably mounted about the armature bearing axis, is located on the main body. It is particularly advantageous if the armature bearing on the one hand and the at least two contact springs on the other hand are arranged on opposite sides of the armature with the actuators.
  • the anchor bearing should preferably be below the anchor or attack from below by the anchor.
  • the anchor bearing engages from above the anchor and the contact springs extend below the actuator.
  • the winding axis of the coil, the armature bearing axis and a main extension direction of the contact springs particularly preferably each flat, preferably substantially parallel, above a base surface of the main body of the relay housing, which is formed as a contact side for positioning the relay on a circuit board or printed circuit board is.
  • This base surface or contact side is the surface which lies in the installed state of the relay at or short distance parallel to the board.
  • terminals or terminals for example, contact pins, SM D contact surfaces, etc., for the circuit board or the circuit are correspondingly attached. assigns.
  • the relay has a horizontal rotational axis of the armature with respect to the printed circuit board and the armature and magnet assembly are located side by side flat above the base surface.
  • the spring movement plane is in this case essentially perpendicular to the base surface, ie the springs are moved away from the base surface for opening or closing or moved in the direction of the base surface.
  • the relay should be designed as a safety relay
  • one of the at least two contact springs is formed as part of a normally open contact and the other of the at least two contact springs as part of a normally closed contact, which is assigned to this normally open within an external safety circuit.
  • the normally open contact and the normally closed contact at the ends of the armature facing away from each other are arranged in the longitudinal direction, whereby in addition to the forced operation a particularly large stroke on both sides, d. H. both on the normally open contact and on the normally closed contact, can be realized.
  • At least one of the actuators particularly preferably the actuator, which is associated with the contact spring of the normally-open contact, has a pressure projection extending in an opening direction of the contact spring, for example in the form of a small projection, which in the opened state (in the opening direction ) presses against the contact spring.
  • a mechanically connected break contact has a contact distance of at least 0.5 mm when a make contact is closed and vice versa.
  • the actuator of the normally closed contact can also have a corresponding contact pressure projection.
  • At least one of the contact springs is designed as a double contact and has two contact pieces which rest in a closed position on a mating contact piece.
  • a contact via which signals are to be transmitted that is to say usually the normally closed contact (NC contact), which should be closed in the normal position of the relay. Due to the design as a double contact, the probability can be increased that sufficient for the signal transmission contact at least one of the two contact pieces is provided with the mating contact piece, for example, if contamination prevents good contact between the contacts on one of the contact pieces.
  • the actuators are arranged so that they can push away the respective contact springs in one direction, for example, can push away from the mating contact.
  • the movement of the contact spring is effected simply by the bias voltage having the respective contact spring. That is, the actuators then work only against the bias of the contact spring and let them simply return due to their own bias in an initial position, for example, the closed state of the respective contact.
  • This construction in which the actuator engages only one side of the contact springs, has the advantage of easier installation of the relay.
  • the actuator fork-shaped, d. H. that the contact spring associated with the actuator is encompassed by the actuator of at least three sides.
  • the closing of a contact can be assisted or initiated, depending on whether the contact spring has a certain bias in one direction.
  • the body preferably has locking elements in order to lock the coil system on or in the base body.
  • the bobbin may have corresponding, cooperating counter-locking means or the locking elements are simply formed by surfaces or edges of the coil system, for example, the bobbin or the pole faces of the yoke.
  • the anchor can be latched with, for example, an anchor bearing journal in the anchor bearing of the body.
  • the relay has a housing cover, which is connectable to the base body to form a closed housing.
  • the housing cover locking elements and the main body cooperating counter-locking means to easily lock the housing cover to the body and thus to allow a quick, easy, inexpensive installation.
  • the housing cover on the inside also counter bearing elements to hold the anchor in the anchor bearing of the body. These counter-bearing elements then block the anchor from slipping out of the anchor bearing.
  • FIG. Figure 1 1 is a schematic representation of a coil system and an armature of a relay according to a third embodiment.
  • this relay 1 being designed as a safety relay with a normally open contact A and a normally closed contact R.
  • the relay in a first switching state P1 (see Figure 7), in which the normally closed contact is closed (Normally Closed) and the normally open contact A (Normally Open ).
  • P1 first switching state in which the normally closed contact is closed (Normally Closed) and the normally open contact A (Normally Open ).
  • the design ensures that the contact piece 55 of the contact spring 51 of the normally open contact has a minimum distance of 0.5 mm to the contact piece 64 of the mating contact 60 even in the event of a fault according to IEC 61810-3.
  • a base body 10 in which all other other components are mounted a coil system 20 (also known as coil assembly and an armature 30 movably coupled thereto, which has two actuators 36, 37 with which the contact springs 51, 53 of the normally open contact A and the normally closed contact R can be actuated.
  • a coil system 20 also known as coil assembly and an armature 30 movably coupled thereto, which has two actuators 36, 37 with which the contact springs 51, 53 of the normally open contact A and the normally closed contact R can be actuated.
  • the stationary mating contacts 60, 61 of the normally open contact and the normally closed contact with their connection pins 63 are first inserted and fixed in the base body 10 in corresponding apertures 18 at two corners of the base body 10. In a later process step, they are additionally encapsulated for stronger fixation, for example with epoxy encapsulants.
  • These stationary mating contacts 60, 61 are L-shaped, wherein the long L-legs form the terminals 63, and have (as short L-legs) on the upper side to a central longitudinal axis of the base body 10 angled counter contact portions 62, which are approximately, preferably exactly, horizontally and are provided on their upper side with mating contact pieces 64.
  • These counter contact pieces 64 are made for example of a silver alloy, which can be riveted or welded to the mating contact portion 62.
  • the main body 10 then has the state shown in Figure 1. Subsequently, the coil system 20 and the armature 30 are brought into the appropriate position to each other and, as shown in Figure 4, mounted in the base body 10, which, as will be explained below, can be done by a simple latching.
  • FIG. 1 The structure of the coil system is shown in more detail in FIG.
  • a yoke made of soft iron is first encapsulated in an injection molding with plastic, the injection mold is shaped so that the bobbin 21 drum-like with a central in the longitudinal direction of the yoke 25 extending bobbin core 22 and two end Spool flanges 23 is formed, wherein in each case the end portions of the yoke 25 protrude from the bobbin flanges 23.
  • the upper and lower surfaces of the free-standing end portions of the yoke 25 constitute the pole faces of the yoke 25.
  • the coil 24 is wound on the bobbin core 22 between the bobbin flanges 23.
  • the bobbin flanges 23 have, on the outside, in each case connecting pieces which hold coil connection wires 27, with which an electrical contacting of the coil winding is possible.
  • In the base body 10 are corresponding holes in the base surface BF or base plate through which the ends of these coil leads 27 are inserted so as to connect them to corresponding terminals of a circuit on a circuit board.
  • the matching armature 30 for this purpose has corresponding pole pieces 33a, 33b, 33c, 33d, which abut in the mounted state in each case on the pole faces of the yoke 25 or are spaced therefrom by a defined air gap, depending on the position of the armature 30 relative to the coil system 20, So depending on the switching state P1, P2 of the relay 1.
  • the armature has two U-shaped soft iron core pieces 33, which have been encapsulated with plastic to form an anchor body 31 in an injection molding process. This is particularly clearly visible in FIG.
  • These soft iron core pieces 33 are U-shaped and are arranged to each other so that their U-webs 33u and U-legs are parallel.
  • two cavities 35 remain in the anchor body 31 during injection, into which permanent magnets 34 can be glued. These cavities 35 have a width which is the distance between the two U-shaped iron core pieces 33 corresponds.
  • the U-legs are preferably each of different heights and the two U-shaped iron core pieces 33 are arranged so that always a shorter U-leg as a shorter pole piece 33c, 33b a longer U-leg as a longer pole piece 33a, 33d opposite.
  • an armature bearing axis AA is defined, which exactly the central axis of the yoke 25 - which, as said the winding axis WA corresponds to the coil 24 - cuts. This is also clearly visible in FIG.
  • the special arrangement of the armature bearing axis AA to the winding axis WA or central axis of the yoke 25 ensures here for a simultaneous investment of the diagonally opposite edges of Ankerpol vom the yoke 25th
  • This magnet system (consisting of coil system 20 and armature 30) thus has four working air gaps.
  • the long pole shoes 33a, 33d are arranged so that in the switching position P1 illustrated in FIG. 7, in which the coil 24 is not flowed through, ie the normally closed contact R is closed, these pole shoes 33a, 33d are connected to their associated pole faces Yoke 25 lie. As a result, a particularly strong tightening force is achieved in this direction. If the coil 24 is traversed by current, ie excited, in the yoke, a polarity which is opposite to that of the permanent magnet flux, which is present through the magnetic flux of the permanent magnets via the armature iron, is generated.
  • this ensures that with a tilting of the armature 30 by a relatively smaller travel or armature stroke in the region of the pole shoes 33a, 33b, 33c, 33d, a relatively larger travel or armature stroke in the region of the actuators 36 , 37 and thus the stroke with which the actuators 36, 37, the contact springs 51, 53 can move, and thus a distance between the contact springs 51, 53 to the mating contact pieces 64 of the stationary mating contacts 60, 61 despite the very low, flat Height of the entire relay 1 can be relatively large.
  • the base body 10 For coupling the coil system 20 and the armature 30 with the base body 10 and thus also of the coil system 20 and the armature 30 to each other, the base body 10 on a base surface BF, with which the relay 1 can be arranged later in the installed state on a board or the like and from which the terminals 63, 59 of the various contacts and the coil terminals 27 of the coil protrude, a frame 1 1 on.
  • this frame 1 1 the coil system 20 and the armature 30 in the suitably collapsed state, so that the pole faces of the pole pieces 33a, 33b, 33c, 33d are fitting in front of the pole faces of the yoke 25, exactly einpassbar.
  • the frame 1 1 has for this purpose two side walls 14 in which latching elements 15 are located on the inside, with which the coil system 20 can be latched by pushing between the side walls 14, wherein the locking elements in the form of locking lugs on the upper peripheral edge of the ends of the yoke 25th to grab.
  • These locking elements 15 have below each exact stop surfaces on which rests the yoke 25 with its lower edges, so that the entire coil system 20 is positioned appropriately.
  • this frame 1 1 in the side walls 14 each have slots 16 through which the actuator 36, 37 of the armature 30 can protrude.
  • the side walls 14 connecting the front wall of the frame 1 1 has at an intermediate position on an armature bearing recess 12a, which forms the part of the armature bearing 12, in which the pole pieces 33a, 33b, 33c, 33d away pointing anchor bearing pin 32a of the armature 30 is received.
  • pole pieces 33a, 33b, 33c, 33d For mounting the inner, between the pole pieces 33a, 33b, 33c, 33d in the direction of the coil system 20 facing anchor pin 32b is located from the base surface BF of the body 10 upwards, parallel to the front wall of the frame 1 1 extending armature bearing web 13, in which a corresponding armature bearing cut 12 b of the armature bearing 12 is arranged.
  • the armature 30 and the coil system 20 need only fitting loose to be stacked on top of each other, and the entire assembly can be locked together in the frame 1 of the Grundgropers 10. This position is shown in FIG. As can be seen here, the actuators 36, 37 are so long that they are positioned with their ends in front of the upper, short L-legs of the mating contacts 60, 61. To shield the contacts A, R from the magnet system, d. H.
  • the actuators 36, 37 at a short distance from the side walls 14 of the frame 1 1 of the main body 10 to the outside of the frame 1 1 located mating contacts 60, 61 area shield elements 38, which cover the slots 16 for the actuators 36, 37 in the side walls 14 of the frame 1 1.
  • the insulation distances (air gap and creepage distance) between the contacts A, R and the magnetic components and electrical components of the coil system 20 and the armature 30 are increased.
  • the movable contact springs 51, 53 of the contact system 50 are mounted.
  • the contact springs 51, 53 are fastened to spring holders 59, for example riveted or welded, which are each formed as terminals 59p or pins 59p (similar to the terminals 63 of the mating contacts 60, 61) at their lower end facing the main body 10.
  • spring holders 59 for example riveted or welded
  • the base body 10 are located opposite the recesses 18 for inserting the stationary mating contacts 60, 61 located corners respectively corresponding recesses 17 through which the terminals 59 p inserted through and can be fixed in the base body 10 at the same time.
  • the contact springs 51, 53 are each, just like the mating contacts 60, 61, constructed L-shaped, in which case, however, the upper L-leg is considerably longer than the L-leg attached to the spring holder 59. Ie. On the top side of the terminal 59 there extends in each case a spring section 52, 54, at the end in the direction of the mating contacts 60, 61 (ie in each case on the underside of the ends of the contact springs 51, 53) Contact piece 55, 58 is arranged, which is provided for contacting with the mating contact piece 64 of the respective mating contact 60, 61.
  • the contact pieces 55, 58, as well as the mating contact pieces 64 may be made for example of a silver alloy and may be riveted or 29wei t with the respective end of the contact spring 51, 53.
  • the contact spring 51 of the normally-open contact A has a relatively large contact piece 55, which is attached to a widening arranged at the end on the spring section 52.
  • the contact spring 53 of the normally closed contact R has at its end on its spring portion 54 a split contact surface 56 with two smaller contact pieces 58 (smaller than the contact piece 55 of the contact spring 51 of the normally-open contact A) by a slot 57 extends in the longitudinal direction of the spring portion 54 from the end ,
  • This has the advantage that the normally closed contact R in the closed state with a high degree of safety maintains sufficient contact with the mating contact piece 64 in order to enable a signal line.
  • the longitudinal direction of the two spring sections 52, 54 of the contact springs 51, 53 is the main extension direction HR of the contact springs 51, 53. It runs here, as can be seen in particular from Figure 6, almost parallel to the armature bearing axis AA of the armature 30 and perpendicular to the winding axis WA of the coil system 20. As can be seen here, the longitudinal axis of the armature AL runs parallel to the winding axis WA of the coil 24 of the coil system 20. All named longitudinal axes or main extension directions thus extend substantially flat above the base surface BF of the main body 10, whereby the particular flat design of the relay 1 results. It is clear that the spring sections 52, 54, depending on the position of the relevant contact A, R, d. H.
  • the spring sections 52, 54 are formed and the contact springs 51, 53 are positioned so that they engage the actuators 36, 37 on the Bridge each end of the armature 30 from above. That is, the actuators 36, 37 press against the respective spring sections 52, 54 when actuated from below.
  • Figure 8 shows the relay in a second switching position P2, in which the coil 24 is energized, whereby the magnetic field of the yoke 25 is reversed and the armature 30 was thus tilted to a position by the actuator 37, the contact spring 53 of the normally closed contact R from the mating contact 61st lifts and thus opens the normally closed contact R, wherein at the same time the contact spring 51 of the normally open contact A due to their bias contacted their associated mating contact 61 and thus the normally open contact A is closed.
  • the distance between the contact pieces on the side of the normally closed contact R is then at least 0.5 mm, even in the event of a fault according to IEC 61810-3.
  • the arrangement of the contact springs 51, 53 with respect to the actuators 36, 37 is here in each case chosen so that in the closed state, the contact springs 51, 53 have no contact with the associated actuator 36, 37, so that even with a burning down the Gegenutton Publishede64 always still a secure contact is possible and not in the closed position of the actuator, the respective contact spring 51, 53 still keeps away from the mating contact piece 64.
  • the relay 1 can finally be closed with a housing cover 2 in the assembled state of all components. This has a peripheral wall whose internal dimensions are adapted to the outer dimensions of the base body 10.
  • the base body 10 has on the outside bottom side in the direction of the base surface BF on its two longitudinal sides in each case two locking cutouts 19 which cooperate with corresponding locking lugs 3 on the inside of the wall of the housing cover 2 and with which the housing cover 2 can be latched to the base body 10.
  • On the inside of the wall of the housing cover 2 is also a peripheral edge 7 in a suitable height, so that this peripheral edge 7 comes to rest on a peripheral edge of the body 10.
  • a longitudinal side is centrally located on the outer wall of the housing cover inside a recess 5, which is adapted to the front wall of the frame 1 1 of the base body 10 in the region of the armature bearing 12, so that there is a precise fit here.
  • a web 4 which serves as an abutment element for the armature bearing recess 12a of the armature bearing 12 and the armature journal on the side facing away from the coil system 20 side of the armature 20 in the corresponding armature bearing cutout 12a holds.
  • the housing cover 2 has a parallel to the longer side walls approximately in the middle region extending web 6, which extends in the assembled state between the coil system 20 and the armature 30 and as an abutment member 6 for the armature bearing recess 12b of the armature bearing 12 between the armature 30 and the coil system 20 is used.
  • both anchor bearing pins 32a, 32b are securely held in the armature bearing 12.
  • FIG. 9 shows a modified variant of the relay 1 according to FIGS. 1 to 8.
  • the coil system 20 and the armature 30 with its magnetic components are constructed substantially the same as in the first embodiments shown in Figures 1 to 8.
  • the actuators 41, 42 with a lower portion 41 a, 42 a and an upper portion 41 b , 42b and each one in between in the longitudinal direction AL of the armature 30 extending slot 41 s, 42s constructed fork-shaped.
  • the respective contact spring 51, 53 or the spring portion 52, 54 of the contact springs 51, 53 passes through the respective slot 41 s, 42 s of the associated him / her actuator 41, 42.
  • This construction makes it possible that the spring portions 52, 54 of Contact springs 51, 53 are lifted not only against their own bias from the mating contact 60, 61, but also by the upper portion 41 b, 42 b of the actuator 41, 42 can be pressed to close down against the mating contact 60, 61. This may be useful in some applications, depending on the bias that the contact springs 51, 53 should have and what purpose the relay should serve.
  • anchor bearing of the armature 30 is constructed slightly differently. Instead of the anchored to the anchor body 31 anchor bearing pins 32a, 32b is now in the anchor body 31 in the direction of the armature bearing axis AA continuous anchor bearing bore 32o. Likewise located at the appropriate position in the frame 1 1 in the central anchor bearing web 13 (not shown in Figure 9) of the body 10 anchor bearing bores 12o. An armature bearing pin 32s, for example a metal pin, is then inserted through the bores to realize the armature bearing.
  • the armature 30 (or consisting of armature 30 and coil system 20 magnet system) may be configured differently. This is shown schematically with reference to FIG. As a comparison with Figure 10 shows, an essential difference here is that the armature 130 is not constructed H-shaped with two U-iron core pieces, but only such a z. B. U-shaped iron core 133 has. That is, the magnet system has only two working air gaps, and there is always only one pole piece 133a, 133b on the corresponding pole face of the yoke 125 at.
  • the yoke 125 is formed such that it has enlarged pole faces at the ends in each case.
  • the magnet system 120 is otherwise constructed in the same way as the magnet system 20 according to the first embodiment, as described in particular. was explained in particular in connection with Figure 2. Ie.
  • the yoke 125 is also encapsulated with plastic to form a drum-like bobbin and then the coil 124 wrapped in a central region around the yoke or the bobbin.
  • the armature 130 can be produced by molding the U-shaped iron core part 133 with molded-on actuators 36, 37 in a plastic injection molding process, and the permanent magnets 34 are inserted into corresponding chambers 35.
  • the armature 133 has only two pole shoes 133a, 133b, which bear against the pole faces of the yoke 125 only from one side, in this case the underside, in this case the armature bearing axis AA 'can be further offset downwards, so that they are in one Distance is below the longitudinal axis of the yoke 125 and the winding axis WA. That is, the anchor bearing pins would then be correspondingly lower, each at the height of the armature bearing axis AA ', which intersects the soft iron core part or its central longitudinal axis, be arranged offset. Accordingly, the base body must be formed so that the armature bearing cutouts of the armature bearing lie at a shorter distance above the base surface BF.
  • This further embodiment with a simplified armature 130 has the advantage of saving material. This can also be an advantage during assembly, since the armature 133 and the magnet system 120 can be used independently of one another in the base body.
  • the devices described in detail above are only exemplary embodiments which can be modified by the person skilled in many different ways without departing from the scope of the invention.
  • the armature bearing axis could also be outside the iron of the armature or offset from the armature longitudinal axis.
  • the anchor bearing could also be made as a separate part, which in turn is then fixed in the base body and / or the magnet system during assembly, for example, as a kind of shaft to which the anchor is attached with a corresponding anchor bearing bore.
  • the anchor bearing could be molded directly on the magnet system.
  • the elements, in particular cooperating, elements on the front and the rear half-shell can be reversed, or similar variations are possible.
  • the special features of the variants described above can also be used. if combined with each other.
  • the use of the indefinite article "a" or "an” does not exclude that the characteristics in question may also be present more than once.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Abstract

L'invention concerne un relais électromagnétique (1), en particulier un relais de sécurité (1). Ce relais comporte un corps de base (10) sur lequel est disposé un système à bobine (20, 120) constitué d'une bobine (24, 124) et d'une culasse (25, 125) qui s'étend le long d'un axe d'enroulement (24, 124) de la bobine. Un induit (30, 130) du relais (1) est monté de manière pivotante à côté de la bobine (24, 124) autour d'un axe de support d'induit (AA, AA) et comporte des pièces polaires (33a, 33b, 33c, 133a, 133b) destiné au couplage magnétique avec la culasse (25, 125) du système à bobine (20, 120). Le relais (1) comprend en outre un système de contact (50) muni d'au moins deux ressorts de contact (51, 53). Un plan de mouvement de ressort (FB) de chacun des ressorts de contact (51, 53) s'étend transversalement, de préférence sensiblement perpendiculairement, à l'axe d'enroulement (WA) de la bobine (24, 124). Au moins deux actionneurs (36, 37, 41, 42) sont disposés au niveau de l'induit (30, 130), lesquels sont associés aux ressorts de contact (51, 53) pour actionner les ressorts de contact (51, 53) et s'étendent au niveau de l'induit (30, 130), par rapport à l'axe de support d'induit (AA, AA'), radialement vers l'extérieur dans une direction longitudinale (AL) de l'induit (30, 130). Les extrémités, radialement les plus extérieures, des deux actionneurs (36, 37, 41, 42) sont chacune plus éloignées de l'axe de support d'induit (AA, AA') que les pièces polaires (33a, 33b, 33c, 33d, 133a, 133b) de l'induit (30, 130).
EP17768417.2A 2016-09-20 2017-09-11 Relais électromagnétique Active EP3516676B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016117671.0A DE102016117671A1 (de) 2016-09-20 2016-09-20 Elektromagnetisches Relais
PCT/EP2017/072770 WO2018054714A1 (fr) 2016-09-20 2017-09-11 Relais electromagnetique

Publications (2)

Publication Number Publication Date
EP3516676A1 true EP3516676A1 (fr) 2019-07-31
EP3516676B1 EP3516676B1 (fr) 2020-11-04

Family

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EP17768417.2A Active EP3516676B1 (fr) 2016-09-20 2017-09-11 Relais électromagnétique

Country Status (6)

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US (1) US10943751B2 (fr)
EP (1) EP3516676B1 (fr)
JP (1) JP7142011B2 (fr)
CN (1) CN109716477B (fr)
DE (1) DE102016117671A1 (fr)
WO (1) WO2018054714A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4231324A1 (fr) * 2017-11-01 2023-08-23 Panasonic Intellectual Property Management Co., Ltd. Relais électromagnétique et dispositif électromagnétique

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4911894Y1 (fr) * 1970-12-21 1974-03-23
US3906416A (en) 1973-11-12 1975-09-16 Anthony E Sprando Electrical relay
AT357624B (de) * 1978-04-17 1980-07-25 Itt Austria Elektromagnetisches relais mit zwangsgefuehrten kontakten
JPS5851555U (ja) * 1981-10-02 1983-04-07 松下電工株式会社 多空隙型有極継電器の磁気回路
JPS60130019A (ja) * 1983-12-16 1985-07-11 松下電工株式会社 電磁継電器
DE3425889C1 (de) * 1984-07-13 1986-02-13 SDS-Relais AG, 8024 Deisenhofen Sicherheitsrelais
DE3520773C1 (de) * 1985-05-29 1989-07-20 SDS-Relais AG, 8024 Deisenhofen Elektromagnetisches Relais
JPS624047U (fr) * 1985-06-25 1987-01-12
DE9208114U1 (de) 1991-06-28 1992-10-08 W. Gruner GmbH Relaisfabrik, 7209 Wehingen Kleinrelais
JPH0735273Y2 (ja) * 1993-10-04 1995-08-09 松下電工株式会社 リレーの構造
DE10251454B3 (de) * 2002-11-05 2004-09-02 Matsushita Electric Works (Europe) Ag Elektromagnetisches Relais
JP4742954B2 (ja) * 2006-03-31 2011-08-10 オムロン株式会社 電磁継電器
US8203403B2 (en) * 2009-08-27 2012-06-19 Tyco Electronics Corporation Electrical switching devices having moveable terminals
US8514040B2 (en) * 2011-02-11 2013-08-20 Clodi, L.L.C. Bi-stable electromagnetic relay with x-drive motor
JP4883232B1 (ja) * 2011-03-14 2012-02-22 オムロン株式会社 電磁継電器
DE102012207589B3 (de) 2012-05-08 2013-10-02 Gruner Ag Relais mit Doppelunterbrechung
CN104217899B (zh) * 2014-09-11 2016-08-31 海拉（厦门）汽车电子有限公司 一种具有l型底座的印制板式电磁继电器

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Publication number Publication date
CN109716477A (zh) 2019-05-03
CN109716477B (zh) 2021-08-10
DE102016117671A1 (de) 2018-03-22
JP2019530194A (ja) 2019-10-17
WO2018054714A1 (fr) 2018-03-29
US20200203104A1 (en) 2020-06-25
US10943751B2 (en) 2021-03-09
EP3516676B1 (fr) 2020-11-04
JP7142011B2 (ja) 2022-09-26

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