EP0308546A2 - Schaltbares elektromagnetisches Impulsrelais - Google Patents

Schaltbares elektromagnetisches Impulsrelais Download PDF

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Publication number
EP0308546A2
EP0308546A2 EP87202423A EP87202423A EP0308546A2 EP 0308546 A2 EP0308546 A2 EP 0308546A2 EP 87202423 A EP87202423 A EP 87202423A EP 87202423 A EP87202423 A EP 87202423A EP 0308546 A2 EP0308546 A2 EP 0308546A2
Authority
EP
European Patent Office
Prior art keywords
electromagnetic pulse
pulse relay
relay according
base
movable contacts
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.)
Withdrawn
Application number
EP87202423A
Other languages
English (en)
French (fr)
Other versions
EP0308546A3 (de
Inventor
Piero Giordanino
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.)
Finder SpA
Original Assignee
Finder SpA
RELE FINDER SpA
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 Finder SpA, RELE FINDER SpA filed Critical Finder SpA
Publication of EP0308546A2 publication Critical patent/EP0308546A2/de
Publication of EP0308546A3 publication Critical patent/EP0308546A3/de
Withdrawn legal-status Critical Current

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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
    • H01H51/02—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
    • H01H51/08—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet
    • H01H51/082—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet using rotating ratchet mechanism
    • H01H51/086—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet using rotating ratchet mechanism with radial ratchet elements

Definitions

  • the present invention relates to a switchable electromagnetic pulse relay.
  • Electromagnetic pulse relays are known which are normally used on lighting plants for civil constructions and which have some inconveniences that make them unsuitable for industrial applications in which the currents to be interrupted are always of considerable intensity and moreover there are numerous and frequent actuations in the course of relatively short times.
  • Such a minimum distance between the contacts is determined by the need to contain as much as possible the dimensions of the relay and thus of its components for the reasons pointed out previously.
  • a further inconvenience consists in that said pulse relays for civil use are substantially used as circuit breakers, i.e. serve to alternately break and restore a feed phase of the user according to the pulses of actuation.
  • a further and important object to be achieved by the present invention consists in providing a relay suitable to obtain switching of the circuit in which it is inserted.
  • a switchable electromagnetic pulse relay comprising a plug support, a field coil wound on a reel support, a ferromagnetic core constituted by a plurality of blades carrying at one end a phase shifting coil, and by a frame for fixing said field coil, characterized in that it further comprises a base of synthetic material and of parallelepiped shape, in said base there being an intermediate plane surface arranged between a lower plane surface and an upper plane surface; a support bracket in said base and adjacent said upper surface; a metal armature attractable by said field coil and having one end pivotally mounted in the interior of a lateral support and the opposite end coupled to a pusher rod forming part of a ratchet gear mechanism and subjected to the action of a return spring; movable contacts arranged in said base and actuated by a ratchet wheel of said ratchet gear, said ratchet wheel carrying on its side surfaces a pair of cam
  • the present invention is constituted by a plug support 2 carrying a plurality of hollow plugs 4 for insertion in a relay support socket (not shown).
  • a plurality of blades 6 Inserted in and subsequently welded to the interior of said hollow plugs 4 is a plurality of blades 6 which in turn are connected to fixed contacts 8 and movable contacts 10 by rivets 12 so as to establish a reciprocal electric continuity among said components, forming the inner electric switch circuit, and an outer circuit.
  • a base 14 shown in Fig. 1 and in three successive views 8, 9, 10 is heat moulded in one piece of synthetic material and comprises a lower plane surface 16 for support and interlocking engagement in appropriate seats arranged in the edges of the plug support 2, and an intermediate plane surface 18 forming a step relative to an upper plane surface 20.
  • a bracket support 22 is inserted in the interior of the base 14 and finds support and abutment in two longitudinal projections 24, 24 ⁇ arranged on the sides 26, 26 ⁇ of said base. Inserted in the interior of the above-mentioned bracket 22 is a metal frame bent in the form of an L and both are firmly secured to the base by a screw 30 passing therethrough and screwed down into a threaded hole 32 provided on the horizontal leg 31 of said square frame 28.
  • a square hole 33 is formed in the horizontal leg 31 adjacent the hole 32 and tabs 34 are inserted, one on each side, in this hole, the tabs 34 being made by cutting from a square hole and outward bending form a metal washer 36 which together with a further washer 38 of insulating material, arranged thereabove, forms an excellent system for eliminating the residual magnetism tending to keep attracted the iron components of the magnetic circuit after the energizing impulse.
  • Both washers 36 and 38 are retained on the horizontal leg 31 of the frame 28 by a field coil 40 of cylindrical shape, arranged with its axis vertically and thus in a position perpendicularly to the base plane 16 of the support 14.
  • the field coil 40 is constituted by a reel 37 of synthetic material and rectangular cross section, carrying a winding 39 with the ends thereof welded to two terminals 43, 43 ⁇ inserted in and secured to the reel 37.
  • a plurality of blades 42 passing through the interior of the coil 40 forms the magnetic core 41, the lower end 44 of which is inserted in the hole 33 of the frame 28 whereas the upper end 46 is embraced by a phase shifting coil 48 adapted to eliminate vibrations and thus the hum during the energizing pulse.
  • a lateral support 50 shown in several views in Figs. 11, 12 and 13 is slidably inserted on a vertical leg 52 of the frame 28 and is secured thereto between a pair of upper and lower lugs 54 and 54 ⁇ , respectively, provided on the side walls 56 and 56 ⁇ and an outer surface 58 of said lateral support 50.
  • the movement of the latter is stopped in the vicinity of a roof 60 provided to cover said support 50, but leaving sufficient space for the insertion of one end of a swinging armature 62, so as to constitute a seat for pivotal mounting of said armature 62.
  • the angular displacement of the armature 62 is obtained by its oscillation between a horizontal plane of attraction A of the magnetic core 41 and an inclined stopping plane B corresponding to the roof 60 of the lateral support 50.
  • the opposite end of the armature 62 is coupled to a pusher rod 64 shown in several views in Figs. 16 and 17 and constituted by a bar 65 of synthetic material having in its centre a longitudinal rib 66 traversed by a short transverse rib 68.
  • Anchored between the upper end of said rod 64 and a projection 51 of the lateral support 50 is an elastic element or spring 70 which reacts to the force of attraction of the electromagnet formed by the field coil 40 and the core 41, this force being exerted on the armature 62, said reaction removing the armature from said core 41 at the end of the energizing pulse.
  • the ratchet wheel 72 carries two pivots 74 and 74 ⁇ which project laterally therefrom and are forcedly inserted in two semicircular seats 76 and 76 ⁇ arranged on the intermediate surface 18 of the base 14.
  • the ratchet wheel 72 has a particular shape.
  • the elastic blades 84 of the movable contact 10 carry adjacent a contact stud 86 a small lateral extension 88, as shown in Fig. 14, which by engaging the respective cam causes a reciprocating movement of approach or removal of said movable contact 10 towards or away from the fixed contacts 8.
  • the fixed contact is likewise constituted by a blade 90 and a contact stud 92.
  • a pawl 94 inserted in an appropriate recess 95 of the base 14 indicated in Fig. 8 is constituted by a square body 96 and an elastic member 98 projecting from said body 96 and which successively engages the teeth 78 of the ratchet wheel 72 to lock it at each angular rotation ⁇ and thus prevent said ratchet wheel to rotate in a direction opposed to the direction of pushing during the phase of lifting of the rod 64.
  • a further characteristic of the relay according to the invention is constituted by the particular configuration of the cover 100 shown in section in Fig. 3.
  • the armature 62 Due to the effect of the pulse, the armature 62 is attracted towards the coil 40 against the action of the spring 70 and causes the translation of the pusher rod 64. The latter, by acting on the teeth 78 of the ratchet wheel 72, causes rotation thereof.
  • each single angular rotation causes a reciprocating movement of approach or removal of the movable contacts 10 towards or from the fixed contacts 8.
  • the advantages of the present invention mainly consist in the great capacity of electric interruption exerted in the contacts by their considerable opening caused by the particular shape of the cams acting thereon, and by the minimum effort required by the mechanical equipment for being actuated, and thus by a decidedly reduced power consumption.
  • the considerable sturdiness of the base and its particular configuration, with the interposition of the bracket support provide a clear electric insulation between the electric control circuit and the switch circuit such as to amply meet the requirements set by international standards.
  • the shape of the base because of the multiple solutions that it permits.
  • it permits the insertion of suitable terminals in appropriate lateral recesses so as to obtain a reduction of the dimensions of the relay and amplify its possibilities of use.
  • Another evident advantage of the present invention consists in the simplicity of passing from a switching function to that of interruption. In this case it will be sufficient to simply remove a contact controlled by the cam 82 while all the other components may remain unchanged in their particular array.
  • the invention is not limited to the specific embodiment that has been described and illustrated, but comprises all the modifications and variations adapted to achieve the same objects, such as, for example, the insertion of wire terminals in the connection blades for automobile use, thus adapting the pulse relay to the automobile industry, or connecting the blades directly to printed circuits and thus adapting the relay to the electronics industry.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Relay Circuits (AREA)
EP87202423A 1987-09-25 1987-12-07 Schaltbares elektromagnetisches Impulsrelais Withdrawn EP0308546A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8767812A IT1211320B (it) 1987-09-25 1987-09-25 Rele elettromagnetico ad impulsi a commutazione
IT6781287 1987-09-25

Publications (2)

Publication Number Publication Date
EP0308546A2 true EP0308546A2 (de) 1989-03-29
EP0308546A3 EP0308546A3 (de) 1989-12-20

Family

ID=11305469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87202423A Withdrawn EP0308546A3 (de) 1987-09-25 1987-12-07 Schaltbares elektromagnetisches Impulsrelais

Country Status (2)

Country Link
EP (1) EP0308546A3 (de)
IT (1) IT1211320B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0962950A2 (de) * 1998-05-02 1999-12-08 GRUNDIG Aktiengesellschaft Gerät der Unterhaltungselektronik mit Netzabschaltung im Bereitschaftsbetrieb
CN111863542A (zh) * 2020-06-23 2020-10-30 宁波北仑聚缘贸易有限公司 一种机械式自保持电磁继电器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2220864B1 (de) * 1973-03-05 1977-02-04 Cartier Gaston
US4262270A (en) * 1978-09-14 1981-04-14 Kabushiki Kaisha Tokai Rika Denki Seisakusho Electromagnetic relay switch assembly
EP0080123A2 (de) * 1981-11-25 1983-06-01 Siemens Aktiengesellschaft Elektromagnetsystem für elektromagnetische Schaltgeräte
EP0161473A2 (de) * 1984-04-18 1985-11-21 Hengstler GmbH Geschäftsbereich Haller-Relais Kleinstrelais

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2220864B1 (de) * 1973-03-05 1977-02-04 Cartier Gaston
US4262270A (en) * 1978-09-14 1981-04-14 Kabushiki Kaisha Tokai Rika Denki Seisakusho Electromagnetic relay switch assembly
EP0080123A2 (de) * 1981-11-25 1983-06-01 Siemens Aktiengesellschaft Elektromagnetsystem für elektromagnetische Schaltgeräte
EP0161473A2 (de) * 1984-04-18 1985-11-21 Hengstler GmbH Geschäftsbereich Haller-Relais Kleinstrelais

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0962950A2 (de) * 1998-05-02 1999-12-08 GRUNDIG Aktiengesellschaft Gerät der Unterhaltungselektronik mit Netzabschaltung im Bereitschaftsbetrieb
EP0962950A3 (de) * 1998-05-02 2001-03-07 GRUNDIG Aktiengesellschaft Gerät der Unterhaltungselektronik mit Netzabschaltung im Bereitschaftsbetrieb
CN111863542A (zh) * 2020-06-23 2020-10-30 宁波北仑聚缘贸易有限公司 一种机械式自保持电磁继电器

Also Published As

Publication number Publication date
IT1211320B (it) 1989-10-12
EP0308546A3 (de) 1989-12-20
IT8767812A0 (it) 1987-09-25

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