EP0033841B1 - Relais - Google Patents

Relais Download PDF

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Publication number
EP0033841B1
EP0033841B1 EP81100122A EP81100122A EP0033841B1 EP 0033841 B1 EP0033841 B1 EP 0033841B1 EP 81100122 A EP81100122 A EP 81100122A EP 81100122 A EP81100122 A EP 81100122A EP 0033841 B1 EP0033841 B1 EP 0033841B1
Authority
EP
European Patent Office
Prior art keywords
armature
contact
relay according
yoke
contact carrier
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.)
Expired
Application number
EP81100122A
Other languages
German (de)
English (en)
Other versions
EP0033841A3 (en
EP0033841A2 (fr
Inventor
Paul Pirner
Alois Mühling
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT81100122T priority Critical patent/ATE7746T1/de
Publication of EP0033841A2 publication Critical patent/EP0033841A2/fr
Publication of EP0033841A3 publication Critical patent/EP0033841A3/de
Application granted granted Critical
Publication of EP0033841B1 publication Critical patent/EP0033841B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • 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
    • H01H50/042—Different parts are assembled by insertion without extra mounting facilities like screws, in an isolated mounting part, e.g. stack mounting on a coil-support

Definitions

  • the invention relates to a relay consisting of an excitation coil, from a one-piece U-shaped yoke with one leg serving as the core of the excitation coil, from an armature, one leg of which extends towards the core of the excitation coil and which extends essentially parallel to the free one Legs of the yoke bracket extending formations for actuating at least one switching contact of a contact carrier, which has an approximately perpendicular to the axis of the excitation coil supporting web for fastening the contact fingers arranged approximately parallel to the axis of the excitation coil of each switching contact, the contact carrier via a fastening attachment of the supporting web to the the formations of the anchor not covered part of the free leg of the yoke bracket is fixed and wherein an edge of the end face of the free leg of the yoke bracket serves as a bearing edge for the armature, which is held by a holding element on the free leg the yoke is attached.
  • Such a relay is known from DE-B-1 267 757.
  • This relay has an excitation coil, in which the one leg of a one-piece U-shaped return yoke dips as a core.
  • the free leg of the yoke is parallel to the axis of the excitation coil.
  • the outer edge of the end face of the free leg of the yoke serves as a bearing edge for a complicatedly shaped anchor.
  • the one, plate-like leg of this armature extends from the bearing cutting edge to the leg of the yoke that serves as the core of the excitation coil.
  • this plate-shaped leg of the armature is provided at the end with a stub-shaped, right-angled bend.
  • the plate-shaped leg of the armature has two lateral, substantially parallel to the free leg of the yoke bracket for actuating switch contacts of a contact carrier.
  • the non-designated contact fingers of each switching contact run approximately parallel to the axis of the excitation coil and are fastened in a contact web running approximately perpendicular to the axis of the excitation coil.
  • the contact carrier is fastened at the end to the free leg of the yoke, with this fastening simultaneously holding a resilient holding element for fixing the armature to the bearing edge on the free leg of the yoke.
  • the anchor of this known relay has a complicated structure.
  • the lateral arrangement of the formations of the armature, which are designed as arms, stands in the way of an extremely space-saving design, since these formations result in a broadening of the entire relay.
  • the side projections can also lead to a disturbing mechanical influence by external influences.
  • FR-A-2 135 168 From FR-A-2 135 168 a relay with an angled armature can be found.
  • a two-piece core / yoke unit is provided.
  • a relay is known from FR-A-2 086 307, in which the armature, similar to DE-B-1 267 757 already mentioned, has side projections for actuating the switching contacts.
  • the excitation coil is latched onto the leg of the yoke used as the core.
  • the core must have bevels at the end which press apart the resilient webs on the body of the excitation coil when the core is inserted.
  • the core must have shoulders into which the resilient webs of the bobbin can snap for mounting. This is an extremely complex route in terms of production technology, since it requires a special design of the body of the excitation coil and of the leg of the yoke that serves as the core of the excitation coil.
  • the contact carrier is fastened to the free leg of the back yoke in such a way that the free leg can be inserted into a groove in the contact carrier and is locked by latching elements.
  • a definition of the excitation coil on the back yoke is not addressed.
  • a relay is commercially available, which has a plate-shaped armature, which is arranged perpendicular to the axis of the excitation coil and to the free leg of the back yoke.
  • Two holding pins which run perpendicular to the plane of the armature and which pierce it, serve as the holding element and are pressed by a pressure plate on the free leg of the fastening bracket by means of a screw fastening.
  • the armature engages with actuating fingers at its end facing away from the core of the excitation coil beyond the free leg of the back yoke.
  • a voluminous contact carrier surrounds the actuation unit consisting of the excitation coil, back yoke and armature on four sides and is connected to the free leg of the back yoke by two screws.
  • the contact carrier has, among other things, a support web running perpendicular to the axis of the excitation coil, on which several insulating material plates are fastened by two screw connections.
  • the contact fingers of several switch contacts are clamped between the insulating material plates, so that the contact fingers run perpendicular to the axis of the excitation coil.
  • the contact fingers grip considerably over the actuating fingers of the armature, so that this known relay requires a considerable amount of space.
  • this relay is relatively complex to assemble due to the large number of screw connections required.
  • Another relay on the market has a cylindrical excitation coil with a cylindrical core.
  • the core of the excitation coil extends beyond the coil flange on one side and is riveted to an insulating plate.
  • An L-shaped back yoke lies with its foot on the protruding end of the core of the excitation coil and is clamped between the one coil flange and the insulating material plate.
  • This yoke is supported on its outer surface facing away from the excitation coil on a shoulder of the insulating material plate, the extension of which simultaneously serves as a contact carrier for three contact fingers of a changeover contact arranged one behind the other.
  • the free leg of the yoke has at the end a rectangular recess through which an angular armature extends, the free leg of which runs essentially parallel to the free leg of the yoke.
  • a tension spring attached in the recess of the free leg of the yoke serves as a holding element for the armature and presses it against an edge of the end face of the free leg of the yoke that serves as a bearing cutting edge.
  • the free leg of the armature has a central cutout to form two lateral armature actuation tabs which are connected by an insulating material bridge.
  • the insulating material bridge has a central recess into which an essentially cruciform actuating element engages, which engages through a recess of the one contact finger of the changeover contact and is supported on the central contact finger with the crossbar of the cross shape.
  • the object of the invention is to design a relay of the type mentioned at the outset in such a way that it combines compactness and ease of manufacture with great security against disturbing mechanical interference.
  • the angular design of the armature, the arrangement of the free arm of the armature, which is approximately parallel to the free leg of the yoke, and the approximately parallel course of the contact fingers to the axis of the excitation coil enable a very space-efficient construction of the relay.
  • the U-shaped yoke in one piece leads to a reduction in the air gaps in the magnetic circuit, so that optimal guidance of the magnetic flux and thus a high armature actuation force is achieved with minimal actuation power.
  • Due to the central cutout in the free leg of the armature to form two armature actuation flaps a high actuation speed of the relay is achieved on the one hand by reducing the mass of the armature and thus reducing the moment of inertia.
  • a free area of the free leg of the back yoke arises between the armature actuation flaps, on which the attachment shoulder of the contact carrier can rest and can be screwed, so that this measure ultimately also favors the space-efficient construction of the relay.
  • the contact carrier also holds the excitation coil on the back yoke in an extraordinarily easy-to-assemble manner, because the only screw fastening through which the contact carrier is fastened to the free leg of the back yoke means that the armature can be swiveled via the leaf spring-like holding element and also via the side support arm to fix the excitation coil on the back yoke. Since this single screw fastening can be released very easily, even if individual elements of the relay are damaged, these - be it the excitation coil, the actuating plate, the contact carrier or the leaf spring-like holding element - can be replaced at any time with the least possible effort.
  • the contact carrier is attached to the free leg of the yoke by a single fastening screw. This simplifies the manufacturing and assembly work.
  • an actuating plate which creates a mechanical operative connection between the free leg of the armature and a contact finger of each switching contact.
  • This actuation plate is used for the perfect transmission of the armature actuation force to the movable contact finger of each switching contact.
  • Insulating material can advantageously be chosen as the material for the actuating plate, because of this mechanical properties are fully sufficient for the actuating forces that occur and thus good insulation between the contact finger and armature is achieved without further measures.
  • the low weight of this material favors a low-inertia response of the relay.
  • the actuating plate can have recesses between at least one switching finger of each switching contact and the free leg of the armature. These recesses serve to improve the insulation by extending the leakage current paths.
  • the switch contacts are designed as break contacts or as changeover contacts, the respective immovable switching finger can protrude through this recess through this recess, which also favors the space-saving structure of the relay.
  • the contact carrier is provided with a rear wall running on the end of the supporting web facing away from the free leg of the yoke in the direction of the axis of the excitation coil to form an L-shaped structure. This rear wall protects the contact fingers of the switch contacts against unwanted mechanical influences and damage.
  • a preferred embodiment of the relay consists in that the armature actuation flaps have depressions, engage in the projections of the actuation plate and that a further projection in the actuation plate engages in a guide depression in the rear wall of the contact carrier. A mechanically favorable three-point guidance of the actuating plate is thus achieved, regardless of the number of switching contacts to be actuated.
  • An alternative advantageous embodiment consists in that the armature actuation flaps have depressions, into which protrusions of the actuation plate engage, and that another protrusion of the actuation plate engages in a recess of at least one movable contact finger of a switch contact.
  • this makes it necessary to provide a recess at least in one contact finger, which can adversely affect its current carrying capacity.
  • the contact finger having the recess it is more difficult to adjust the adjustment of a minimum distance, for example to compensate for the erosion, between the contact finger and the actuating plate, since this distance can no longer be checked visually.
  • the fastening attachment can be cuboidal and have a central bore for receiving the fastening screw.
  • the attachment projection can protrude in the direction of the free leg of the back yoke over the supporting web. This ensures sufficient free space for the free movement of the armature actuating flaps in the direction of the switching contacts.
  • the holding element for the armature is designed in the manner of a leaf spring and is attached to at least a part of its surface against the free leg of the back yoke, the holding element holding the armature in its predetermined position relative to the free leg of the back yoke with at least one resilient holding arm . This ensures that the armature is retained on the back yoke to ensure that the armature swivels.
  • the holding element has a fastening surface, which is pressed against the free leg of the return yoke by the fastening projection of the contact carrier.
  • the holding element can have two claw-like holding arms, which engage in depressions in the region of the curvature zone of the armature and press it against the bearing edge of the free leg of the yoke.
  • This two-point force application results in a particularly reliable and tilt-free mounting of the armature, which also enables optimal guidance of the magnetic flux over the now reproducibly predetermined air gap between the armature and the end face of the free leg of the yoke. Since the force effect mediated by the holding arms takes place in the region of the curvature zone of the armature, almost no additional torque is exerted on the armature by the holding force.
  • a holding lug can protrude from the holding element and engages in a holding opening in the free leg of the yoke. This means that when the relay is assembled before the final fixing of the holding element by screwing the contact carrier, the armature is already fixed, so that before the subsequent mounting of the contact carrier, the armature cannot slide down from its predetermined position on the back yoke.
  • the contact carrier is equipped with two switching contacts, which are arranged on both sides of a reference plane containing the axis of the excitation coil and extending perpendicularly through the supporting web of the contact carrier. This side-by-side arrangement of the switching contacts enables a low installation depth of the relay.
  • Any two-way combination of the three elements make contact, break contact and changeover contact can be used as switching contacts.
  • a preferred embodiment of the relay according to the invention consists in that the one-piece actuating plate consists of two rectangular partial areas, each with a straight outer edge for actuating the movable contact finger of the switching contact, and with a normally closed contact the fixed contact finger protruding through the associated recess of the actuating plate without contact.
  • the choice of the straight outer edge for actuating the movable contact finger allows easy visual control of the system or the required distance between the movable contact finger and the outer edge of the actuating plate when adjusting the switch contacts.
  • the contact carrier has two parallel support arms which are flush against the outside of the free leg of the yoke. This enables the excitation coil to be fixed on the back yoke in a particularly reliable and tilt-free manner.
  • the two holding arms provide complete security against rotation of the contact carrier around the axis of the screw. Due to the flush contact of the two parallel support arms, the assembly is also favored, since after the contact carrier has been plugged onto the back yoke, a type of clamp fastening already takes place.
  • the contact carrier consists of an insulating plastic and is made in one piece and if the actuating plate is made of Pertinax®.
  • the relay according to the invention is given the reference number 1.
  • the excitation coil which is rectangular or oval in cross section, bears the reference number 2.
  • the excitation coil 2 is seated on one leg 3 of the U-shaped return yoke 4.
  • the leg 3 of the return yoke 4 serves as the core of the excitation coil 2.
  • One leg of the return yoke 4 is through a Web 5 connected to the free leg 6 of the yoke.
  • the two legs 3 and 6 of the yoke 4 run essentially parallel to each other.
  • the yoke 4 is designed so that all cross sections through its legs 3 and 6 perpendicular to the axis of the excitation coil 2 have the shape of a narrow rectangle.
  • the web 5 and the free leg 6 of the yoke are widened in the transverse direction in relation to the leg 3 immersed in the excitation coil 2 in order to ensure a favorable guidance of the magnetic flux.
  • the one-piece design of the back yoke 4 serves the same goal, since it avoids annoying air gaps compared to a multi-piece design with a separation into the core and back yoke.
  • the end outer edge of the free leg 6 of the yoke 4 serves as a bearing edge 7 for the angularly shaped armature 8.
  • the leg 9 of the armature 8 which extends from the bearing edge 7 to the leg 3 of the excitation coil 2, tapers in the direction of the leg 3 to its width at the core location and thus has a trapezoidal shape.
  • the leg 9 of the armature 8 is of the same width as the free leg 6 of the yoke 4. This shape contributes to optimal guidance of the magnetic flux and ensures a small magnetic contact resistance at the location of the bearing edge 7.
  • the tapering of the leg 9 at the location of the leg 3 causes a reduction in the moving mass of the armature and thus entails a considerable reduction in the moment of inertia.
  • Cross sections through the leg 9 parallel to the free leg 6 of the yoke have a rectangular shape.
  • the angle between the leg 9 and the free leg 10 is slightly larger than 90 ° at the location of the bearing edge 7.
  • the free leg 10 of the armature 8 has a further weak bend along the bending line A toward the free leg 6 of the yoke 4.
  • the arm 9 of the armature which extends towards the arm 3 serving as the core of the excitation coil 2, is attracted when the excitation coil is excited, so that the other arm 10 of the armature moves away from the free arm 6 of the yoke 4. This movement of the free leg 10 is used by the actuating plate 11 to actuate the switching contacts 12 and 13 of the contact carrier 14.
  • the free leg 10 of the armature 8 runs approximately parallel to the free leg 6 of the yoke 4.
  • the free leg 10 has a central cutout 15 which is open at the top in FIG. 1, so that two armature actuating flaps 16 and 17 are arranged side by side. This measure serves on the one hand to reduce the moving mass of the armature 8, and on the other hand a portion of the free leg 6 of the yoke 4 is exposed through the cutout 15, which - as will be explained later - is used for fastening tasks.
  • Each of the armature actuation flaps 16 and 17 has an embossing that bulges toward the free leg 6 of the yoke 4 at the end. In Fig.
  • the opposite edge 23 of the actuating plate 11 is also provided with projections 24 and 25 which engage in correspondingly shaped recesses 26 and 27 in the movable contact fingers 28 and 29 of the switching contacts 12 and 13. This ensures proper transmission of the armature actuation force to the movable contact fingers 28 and 29 and at the same time a solid mounting of the actuation plate 11 is achieved.
  • the two switching contacts 12 and 13 are arranged side by side relative to the free leg 6 of the yoke 4. In this way, the full width of the relay, which is predominantly determined by the optimization of the magnetic flux, is used for the space-saving arrangement of the switching contacts and a large depth of the relay 1 is avoided.
  • the switch contact 12 is designed as a make contact
  • the switch contact 13 as a break contact.
  • any two-way combination of the elements make contact / break contact / changeover contact can be used as switching contacts.
  • the actuating plate 11 has two rectangular recesses 30 and 31, each between the movable contact fingers 28 and 29 of the switching contacts 12 u. 13 and the armature actuation flaps 16 and 17 are arranged.
  • the immovable contact finger 32 extends through the recess 31.
  • These recesses 30 and 31 serve to extend the creepage distance and thus increase the insulation strength of the actuating plate 11 made of the insulating material Pertinax®.
  • the contact carrier 14 has a supporting web 33, in which the contact fingers of the switching contacts 12 and 13 are embedded approximately parallel to the axis of the excitation coil 2.
  • the plane spanned by the supporting web 33 runs perpendicular to the axis of the excitation coil 2.
  • the transverse dimensions of the supporting web 33 i.e. its dimensions in the vertical direction to the axis of the excitation coil 2 and parallel to the free leg 6 of the yoke 4 coincide with those of the excitation coil 2 in this direction.
  • the support web 33 is located approximately at the height of the coil flange 34 of the excitation coil 2 facing away from the web 5 of the yoke 4.
  • the support web 33 has a fastening projection 35, via which the contact carrier 14 at the point of the free between the two armature actuation tabs 16 and 17 Leg 6 of the yoke 4 is fastened by a screw connection by means of the fastening screw 36.
  • the attachment projection 35 is cuboid and has a central bore for receiving the attachment screw 36.
  • the cuboid fastening attachment 35 is placed on the supporting web 33 from above and protrudes in the direction of the free leg 6 of the yoke 4 over the supporting web 33.
  • This holding element 37 holds the armature 8 with at least one resilient holding arm pivotably in its predetermined position relative to the bearing edge 7 on the free leg 6.
  • the support arms 38 and 39 extend vertically from a wall 41 of the contact carrier 14, which extends perpendicularly to the end of the support web 33 facing the free leg 6 of the yoke 4.
  • This wall 41 opens into the fastening projection 35 and continues on the other side of the fastening projection 35 up to the end of the supporting web 33.
  • the contact carrier 14 is constructed symmetrically to the plane of symmetry containing the axis of the fastening screw 36 and the axis of the excitation coil.
  • the side support arms 38 and 39 can also go directly from the support web 33.
  • the supporting web 33 of the contact carrier 14 also merges on its side facing away from the free leg 6 of the yoke 4 into a rear wall 42 which runs parallel to the free leg 6 and which has a depression 43 for receiving the fastening screw 36.
  • This rear wall serves to protect the switching contacts 12 and 13 against damage due to mechanical influences, which could impair the adjustment of the switching contacts 12 and 13.
  • the support web 33, the wall 41 and the cuboid fastening attachment 35 form in connection with the Rear wall 42 niches, of which the greater part of the length of the switch contacts 12 and 13 is encompassed and which have a high electrical leakage current resistance to one another.
  • the entire contact carrier 14, consisting of the supporting web 33, the fastening projection 35, the wall 41, the support arms 38 and 39 and the rear wall 42 is made in one piece and consists of an insulating plastic. It can be produced in an injection molding process in an advantageous manner in terms of production technology.
  • the relay shown in perspective in FIG. 2 serves to illustrate an alternative embodiment for the mounting of the actuating plate 11.
  • the elements of the relay which correspond to FIG. 1 are given the same reference numerals. For reasons of better clarity, a number of elements of FIG. 1 are not or only partially shown in this figure. Of the two support arms 38 and 39, only the support arm 38 is roughly indicated schematically.
  • the opposite edge 23 of the actuating plate 11 has only a single projection 44 lying in the plane of the actuating plate, which engages in a guide recess 45 designed as an opening in the rear wall 42 of the contact carrier 14 and is displaceably mounted in the longitudinal direction thereof. This results in a perfect three-point bearing for the actuating plate 11. It is therefore no longer necessary to provide a plurality of projections on this edge 23 of the actuating plate 11 and recesses in the movable contact fingers 28 and 29.
  • the contact carrier 14 is constructed in mirror symmetry, the plane of symmetry containing the axis of the bore adjoining the depression 43 through the cuboid fastening attachment 35 and extending perpendicular to the supporting web 33.
  • the free end face of the fastening projection 35 parallel to the rear wall 42 presses the holding element 37 against the free leg 6 of the shorting bar 4.
  • the required actuation force for the switching contacts 12 and 13 can be provided with a very small control power if the ratio of the width a of the excitation coil 2 to the width b of the as the core effective leg 3 of the yoke 4 is in a range between 1.65 and 2.0.
  • the minimum tax rate is a ratio a / b of 1.75.
  • a particularly favorable range is 1.75 ⁇ 0.05.
  • FIG. 4 shows the embodiment of an actuating plate 11 explained in connection with FIG. 1 for a closing contact on the left and an NC contact on the right.
  • the projections 21 and 22 are provided for engagement in the armature actuation flaps 16 and 17, the projections 24 and 25 for engagement in recesses in the movable contact fingers 28 and 29 of the switching contacts 12 and 13.
  • Fig. 5 shows the embodiment of the actuating plate 11 explained with reference to Fig. 2 for the same pairing of switching contacts, i.e. for one make contact and one break contact. Instead of the two projections 24 and 25, only one projection 44 is needed here, which engages in the guide recess 45 of the rear wall 42.
  • FIG. 6 shows an embodiment of an actuating plate 11 for two make contacts for the three-point mounting of the actuating plate explained with reference to FIG. 2.
  • Fig. 7 shows an embodiment of the actuating plate 11 for two break contacts.
  • All embodiments of the actuating plate 11 have in common that they are made in one piece and are essentially composed of two rectangular partial surfaces B and C, each of which is designed in a peculiar manner in accordance with the type of switch contacts.
  • FIG. 9 shows the holding element 37 for fixing the armature 8 on the bearing edge 7 of the yoke 4 together with these elements.
  • the holding element 37 lies in the cutout 15 between the two armature actuating tabs 16 and 17 on the outer surface of the free leg 6 of the yoke bracket 4.
  • the holding element 37 has two holding arms 45 and 46, which run essentially parallel to one another and end at about 135 ° Claws 47 and 48 are curved. These claws 47 and 48 engage in depressions 49 and 50 of the armature 8.
  • the depressions 49 and 50 are arranged in the region of the curvature zone 51 of the armature 8.
  • the two holding arms 45 and 46 are connected to one another by a fastening web 52 which is approximately U-shaped and includes an elongated hole 53 which is open on one side.
  • the fastening web 52 represents the fastening surface on which the end face of the fastening projection 35 of the contact carrier 14 is pressed in the area of the rectangle D shown in broken lines.
  • the threaded bore 54 located in the area of the elongated hole 53 in the free leg 6 of the yoke 4 serves to receive the fastening screw 36 of the contact carrier 14.
  • the possibility given by the elongated hole 53 to move the holding element 37 is used for the function just clamping force setting for fixing the armature 8 on the bearing edge 7.
  • the holding element 37 has at its end facing away from the claws 47 and 48 a holding nose 55 which engages in a holding opening 56 in the free leg 6 of the yoke 4.
  • the anchor 8 is thus secured in position during the assembly process by attaching the holding element 37 before attaching the screw connection in the manner of a three-point bearing.
  • the holding lug 55 starts from a connecting web 57 connecting the two holding arms 45 and 46 at their end facing away from the claws 47 and 48.
  • this connecting web 57 applies the main part of the initially relatively low spring force for the retention of the armature 8.
  • the holding element 37 is pressed against the free leg 6 of the yoke after the contact carrier 14 has been screwed tightly in the area of the rectangle D shown in FIG. 9, then essentially only the increased holding force of the holding element 37 conveyed by the claws 47 and 48 is left effective, so that the armature 8 is properly pressed against the bearing edge 7 when the relay is fully assembled, even in the event of shock-like mechanical loads.
  • the spring constant of the holding element 37 which acts to hold the armature 8 is "switched" to a higher value by disabling the parts 55, 57 of the holding element 37 that determine the previous spring constant.
  • the holding arms 45 and 46 are connected to each other directly behind the claws 47 and 48 by a support web 58 which serves to mechanically stabilize the two holding arms 45 and 46.
  • the holding arms 45 and 46 lie up to the bending points 59 and 60 in one plane with the connecting web 57 and the fastening web 52 and are thus in this area on the outer surface of the free leg 6.
  • the holding arms 45 and 46 are bent back somewhat from the bending points 59 and 60 to the claws 47 and 48 with respect to the outer surface of the free leg 6. This back bend is dimensioned such that a holding force is transmitted to the armature 8 by the claws 47 and 48 and extends through the bearing cutting edge.
  • the armature 8 is thus fixed on the bearing cutting edge 7 so as to be pivotable without a torque being caused on the armature 8 by the holding element 37 caused by the holding element.
  • the holding element 37 is constructed with mirror symmetry.
  • the plane of symmetry runs parallel to the holding arms 45 and 46 through the center line of the elongated hole 53 and is perpendicular to the plane specified by the connecting web 57 and the fastening web 52.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Seal Device For Vehicle (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Electronic Switches (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (20)

1. Relais constitué par une bobine d'excitation (2) et un étrier de culasse nue en forme de U et d'une pièce, dont une branche (3) sert de noyau pour la bobine d'excitation (2) par une armature (8) dont la branche (9) s'étend vers le noyau de la bobine d'excitation (2) et comporte des appendices qui s'étendent essentiellement suivant une direction parallèle à la branche libre (6) de l'étrier de culasse (4) pour commander au moins un contact de commutation (12, 13) d'un support de contacts (14) qui comporte une barrette de support (33) s'étendant à peu près perpendiculairement à l'axe de la bobine d'excitation (2) pour la fixation des doigts de contact (28, 29) de chaque contact de commutation (12, 13), qui sont disposés à peu près parallèlement à l'axe de la bobine d'excitation (2), le support de contacts (14) étant fixé, par l'intermédiaire d'un appendice de fixation (35) de la barrette de support (33), à la partie de la branche libre (6) de l'étrier de culasse (4), qui n'est pas recouverte par les appendices de l'armature (8) et un bord de la surface frontale de la branche libre (6) de l'étrier de culasse (4) servant de couteau d'appui (7) pour l'armature (8) qui est fixée par un élément de maintien (37) à la branche libre (6) de l'étrier de culasse (4), caractérisé par le fait
a) que les appendices sont réalisés sous la forme d'une partie repliée de l'armature (8) de forme angulaire, avec formation d'une branche libre (10),
b) que la branche libre (10) de l'armature (8) présente une ouverture centrale pour la formation de deux languettes (16, 17) de commande de l'armature,
c) que l'appendice de fixation (35) de la barretede support (33) porte, à l'emplacement de l'ouverture centrale (15) de la branche libre (10) de l'armature (8), contre l'étrier de culasse (4), et
d) que le support de contacts (14) comporte au moins un bras d'appui latéral (38, 39) qui chevauche par le haut la branche libre (6) de l'étrier de culasse (4), et qui chevauche par le bas, sur sa face intérieure, le flasque de bobine (40) de la bobine d'excitation (2), qui prend appui, par son côté extérieur, sur la barrette (5) qui relie les deux branches (3, 6) de l'étrier de culasse (4).
2. Relais selon la revendication 1, caractérisé par le fait que le support de contacts (14) est fixé par une vis de fixation unique (36) à la branche libre (6) de l'étrier de culasse (4).
3. Relais selon la revendication 1 ou 2, caractérisé par le fait qu'il est prévu une plaque de commande (11) qui établit une liaison mécanique active entre la branche libre (10) de l'armature (8) et un doigt de contact (28, 29) de chaque contact de commutation (12, 13).
4. Relais selon l'une des revendications 1 à 3, caractérisé par le fait que la plaque de commande (11) comporte des ouvertures (30, 31) entre au moins un doigt de commutation (28, 29) de chaque contact de commutation (12, 13) et la branche libre (10) de l'armature (8).
5. Relais selon l'une des revendications 1 à 4, caractérisé par le fait que le support de contacts (14) est pourvu, du côté de l'extrémité de la barrette de support (33) qui est éloigné de la branche libre (6) de l'étrier de culasse (4), d'une paroi postérieure (42) s'étendant en direction de l'axe de la bobine d'excitation (2), en vue de former une structure en forme de L.
6. Relais selon la revendication 5, caractérisé par le fait que les languettes (16, 17) de commande de l'armature comportent des encoches (19, 20) dans lesquelles pénètrent des parties saillantes (21, 22) de la plaque de commande (11), et qu'une partie saillante supplémentaire (44) de la plaque de commande (11) pénètre dans une encoche de guidage (45) de la paroi postérieure (42) du support de contacts (14).
7. Relais selon la revendication 3, caractérisé par le fait que les pattes de commande de l'armature (16, 17) comportent des encoches (19, 20) dans lesquelles pénètrent des parties saillantes (21, 22) de la plaque de commande (11), et que dans une encoche (26, 27) d'au moins un doigt de contact mobile (28, 29) d'un contact de commutation (12, 13) pénètre une autre partie saillante (24, 25) de la plaque de commande (11).
8. Relais selon l'une des revendications 2 à 7, caractérisé par le fait que l'appendice de fixation (35) a la forme d'un parallélépipède et comporte un perçage central pour recevoir la vis de fixation (36).
9. Relais selon l'une des revendications 1 à 8, caractérisé par le fait que l'appendice de fixation (35) déborde la barrette de support en direction de la branche libre (6) de l'étrier de culasse (4).
10. Relais selon l'une des revendications 1 à 9, caractérisé par le fait que l'élément de support (37) pour l'armature (8) est réalisé sous la forme d'un ressort à lame et est fixé, au moins avec une partie de sa surface à la branche libre (6) de l'étrier de culasse (4) contre laquelle il repose, l'élément de support (37) maintenant l'armature (8), avec au moins un bras de maintien élastique (45, 46), dans sa position prédéterminée par rapport à la branche libre de l'étrier de culasse (4).
11. Relais selon l'une des revendications 1 à 10, caractérisé par le fait que l'élément de maintien (37) comporte une surface de fixation (52) qui est pres- sée, par l'appendice de fixation (35) du support de contacts (14), contre la branche libre (6) de l'étrier de culasse (4).
12. Relais selon la revendication 10 ou 11, caractérisé par le fait que l'élément de maintien (37) comporte deux bras de support coudés (45, 46) se terminant à la manière de griffes (47, 48), lesdits bras de maintien pénétrant dans des cuvettes (49, 50) ménagées dans la partie qui concerne la zone de courbure (51 ) de l'armature (8) et appliquent celle-ci contre le couteau d'appui (7) situé au niveau de la branche libre (6) de l'étrier de culasse (4).
13. Relais selon la revendication 11 ou 12, caractérisé par le fait que sur l'élément de maintien (37) fait saillie un bec de maintien (55) qui pénètre dans une ouverture de maintien (56) ménagée dans la branche libre (6) de l'étrier de culasse (4).
14. Relais selon l'une des revendications 1 à 13, caractérisé par le fait que le support de contacts (14) est pourvu de deux contacts de commutation (12, 13) qui sont disposés de part et d'autre d'un plan de référence qui contient l'axe de la bobine d'excitation (2) et qui s'étend perpendiculairement à travers la barrette de support (33) du support de contacts (14).
15. Relais selon la revendication 14, caractérisé par le fait que l'on met en oeuvre, comme contacts de commutation (12, 13) une combinaison double quelconque constituée à partir des trois éléments contact de fermeture, contact d'ouverture et contact d'inversion.
16. Relais selon les revendications 4, 6,14,15, caractérisé par le fait que la plaque de commande (11) faite d'une seule pièce, est constituée par deux surfaces partielles rectangulaires (B, C) un bord rectiligne extérieur (23) servant à la commande du doigt de contact mobile (28, 29) du contact de commutation (12, 13) et, dans le cas d'un contact d'ouverture, le doigt de contact fixe (32) passe, sans contact, à travers l'ouverture associée (31) de la plaque de commande (11).
17. Relais selon la revendication 1, caractérisé par le fait que le support de contacts (14) comporte deux bras d'appui parallèles (38, 39) qui portent, à niveau de l'extérieur, contre la branche libre (6) de l'étrier de culasse (4).
18. Relais selon l'une des revendications 1 à 17, caractérisé par le fait que le support de contacts (14) est constitué par une matière plastique isolante et est fabriqué d'une seule pièce.
19. Relais selon l'une des revendications 3 à 18, caractérisé par le fait que la plaque de commande (11) est fabriquée avec du Pertinax® .
20. Relais selon l'une des revendications 1 à 19, caractérisé par le fait que le rapport entre la largeur (a) de la bobine d'excitation (2) et la largeur (b) de la branche (3) de l'étrier de culasse (4), qui sert de noyau pour la bobine d'excitation (2), se situe dans la plage de 1,65 à 2,0.
EP81100122A 1980-01-21 1981-01-09 Relais Expired EP0033841B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100122T ATE7746T1 (de) 1980-01-21 1981-01-09 Relais.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803002079 DE3002079A1 (de) 1980-01-21 1980-01-21 Relais
DE3002079 1980-01-21

Publications (3)

Publication Number Publication Date
EP0033841A2 EP0033841A2 (fr) 1981-08-19
EP0033841A3 EP0033841A3 (en) 1981-09-02
EP0033841B1 true EP0033841B1 (fr) 1984-05-30

Family

ID=6092587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100122A Expired EP0033841B1 (fr) 1980-01-21 1981-01-09 Relais

Country Status (8)

Country Link
US (1) US4346359A (fr)
EP (1) EP0033841B1 (fr)
JP (1) JPS56109424A (fr)
AT (1) ATE7746T1 (fr)
BR (1) BR8100295A (fr)
DE (2) DE3002079A1 (fr)
ES (1) ES498659A0 (fr)
PT (1) PT72369B (fr)

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DE3176825D1 (en) * 1980-09-01 1988-09-01 Fujitsu Ltd Electromagnetic relay and method of manufacturing the same
US4420733A (en) * 1982-03-25 1983-12-13 Amf Incorporated Miniaturized electromagnetic relay
US4635075A (en) * 1985-12-04 1987-01-06 Datametrics Corporation Thermal print head and process for producing
US4734668A (en) * 1986-05-12 1988-03-29 Siemens Aktiengesellschaft Electromagnetic relay
US4851802A (en) * 1987-05-13 1989-07-25 Siemens Aktiengesellschaft Electromagnetic relay
EP0293722B1 (fr) * 1987-06-04 1992-05-13 Siemens Aktiengesellschaft Relais électromagnétique
US4937543A (en) * 1988-01-28 1990-06-26 Siemens Aktiengesellschaft Relay assembly having plug connections
EP0372554A3 (fr) * 1988-12-09 1992-04-08 OMRON Corporation Relais électromagnétique
DE9013221U1 (de) * 1990-09-18 1992-01-23 Siemens AG, 80333 München Elektromagnetisches Leistungsrelais mit Betätigungsschieber
US5270674A (en) * 1990-11-21 1993-12-14 Omron Corporation Electromagnetic relay
US6211761B1 (en) * 1997-09-10 2001-04-03 Takamisawa Electric Co., Ltd. Electromagnetic relay, joining structure for hinge spring and yoke in the electromagnetic relay, and flux penetration preventing structure
US6679488B2 (en) * 2000-05-08 2004-01-20 Tyco Electronics Amp Gmbh Armature spring for a relay
US7477119B2 (en) * 2007-03-02 2009-01-13 Good Sky Electric Co., Ltd. Electromagnetic relay
JP6959728B2 (ja) * 2016-11-04 2021-11-05 富士通コンポーネント株式会社 電磁継電器
DE102018109856B3 (de) * 2018-04-24 2019-08-01 Phoenix Contact Gmbh & Co. Kg Relais
CN110970268A (zh) * 2018-09-30 2020-04-07 泰科电子(深圳)有限公司 电磁继电器
CN110970266A (zh) * 2018-09-30 2020-04-07 泰科电子(深圳)有限公司 电磁继电器

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FR1051255A (fr) * 1950-02-14 1954-01-14 Materiel Telephonique Relais électromagnétiques tels que ceux utilisés dans les télécommunications etles télécommandes
US3242285A (en) * 1963-03-21 1966-03-22 Guardian Electric Mfg Co Relay with unitary field piece construction
DE1267757C2 (de) * 1964-10-22 1974-05-22 Kuke Fa Fritz Elektromagnetisches Relais
DE1292752B (de) * 1964-12-22 1969-04-17 Siemens Ag Ankerlagerung fuer elektromagnetische Relais
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US3548139A (en) * 1967-11-07 1970-12-15 Gen Signal Corp Electromagnetic relay structure
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DE2218494B1 (de) * 1972-04-17 1973-10-11 Siemens Ag, 1000 Berlin U. 8000 Muenchen Elektromagnetisches Relais
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FR2428910A1 (fr) * 1978-06-13 1980-01-11 Rausch & Pausch Relais a armature battante

Also Published As

Publication number Publication date
DE3002079A1 (de) 1981-07-23
EP0033841A3 (en) 1981-09-02
JPS56109424A (en) 1981-08-29
EP0033841A2 (fr) 1981-08-19
ATE7746T1 (de) 1984-06-15
DE3163781D1 (en) 1984-07-05
ES8200967A1 (es) 1981-11-16
BR8100295A (pt) 1981-08-04
ES498659A0 (es) 1981-11-16
US4346359A (en) 1982-08-24
PT72369A (en) 1981-02-01
PT72369B (en) 1982-01-05

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