EP0021976B1 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP0021976B1
EP0021976B1 EP19800400877 EP80400877A EP0021976B1 EP 0021976 B1 EP0021976 B1 EP 0021976B1 EP 19800400877 EP19800400877 EP 19800400877 EP 80400877 A EP80400877 A EP 80400877A EP 0021976 B1 EP0021976 B1 EP 0021976B1
Authority
EP
European Patent Office
Prior art keywords
plates
plate
support block
electromagnetic relay
fixed
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
EP19800400877
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0021976A1 (fr
Inventor
Marcel Rehel
François Martin
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.)
Alcatel CIT SA
Original Assignee
Compagnie Industrielle de Telecommunication CIT Alcatel SA
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 Compagnie Industrielle de Telecommunication CIT Alcatel SA filed Critical Compagnie Industrielle de Telecommunication CIT Alcatel SA
Publication of EP0021976A1 publication Critical patent/EP0021976A1/fr
Application granted granted Critical
Publication of EP0021976B1 publication Critical patent/EP0021976B1/fr
Expired 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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H01H2001/265—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support having special features for supporting, locating or pre-stressing the contact blade springs
    • 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
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement
    • H01H50/642—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement intermediate part being generally a slide plate, e.g. a card

Definitions

  • the invention relates to electromagnetic relays of the stacking type of electrical contact blades, in particular for telecommunications.
  • the stacking of the contact blades and the plates requires precise alignment so that the facing contacts at the end of said blades can be established on an optimum surface.
  • An approximate centering can be obtained by fixing the stack to the cylinder head of the relay by means of two screws or rivets passing through the blade-insert assembly. This has the disadvantage of requiring a large dimensioning of the blades and a certain clearance between the diameter of the screws and the drilling holes.
  • a solution for a more precise alignment of blades of a small size consists in using only one fixing screw for a block of two stacks of blades, said blades of each stack being centered by two insulating pins passing through the assembly blade plates in the axis of symmetry of said blades.
  • these insulating pins must be calibrated with precision, which weighs significantly on the cost of the product.
  • the patent US-A-2838631 describes a different solution in which a single screw makes it possible to fix a block of two stacks of blades, the block consists of insulating plates which can be inserted one inside the other thanks to transverse recesses and complementary shoulders respectively made on either side of the plates to ensure the positioning of the blades inserted between these nested plates.
  • the fixing of the stacking block by a screw or a rivet passing through the central part of the block has the drawback of concentrating the pressure on the central zone of the plates, the lateral parts of which tend to spread out in a fan on either side of the central area.
  • German patent provides in particular a central crown flange associated with a flat leaf spring applied between the central crown and the plates as well as a central crown flange and side flaps pressing simultaneously on a leaf spring applied to the platelets.
  • Another means of producing stacking blocks consists in coating a part of each strip in molten insulating material in order to obtain a strip-plate and in positioning them according to the preceding solution. Another way is to position the blades of one or more stacks in a special mold and fill the mold with molten insulating material.
  • the present invention therefore provides an electromagnetic relay with stacks of fixed and movable electrical contact blades held in at least one support block which is fixed to a yoke of the relay by means of a screw and which consists of interlocking insulating plates one inside the other thanks to transverse recesses and complementary shoulders respectively produced on one and / or the other face of the plates to ensure the positioning in alignment of the contact blades clamped in the recesses by the shoulders under the action of the screw.
  • the plates of a support block are assembled in at least two sets, nested and aligned, in each of which the plates are assembled together by means of two retaining fingers carried by the one of them placed at one end of the game in question, the support block being secured to a base, transverse to the cylinder head and integral with this cylinder head, by means of a bar with bent ends and with central part reinforced on which rests on the fixing screw passing through said reinforced central part and said plates in their respective central parts to be screwed into said base so that pressure is distributed over the central part and over the lateral parts of the plates.
  • the plates of a support block are assembled in at least two interlocked and aligned sets, in each of which the plates are assembled together by means of two retaining fingers carried by t ' one of them placed at one end of the game in question, the support block being secured to the cylinder head, by means of a U-shaped flange shaped so as to have a central bulge and two lateral bulges so as to be ensured a distribution of the pressure on the central part and on the lateral parts of the pads.
  • the relay comprises, integral with the cylinder head 1, a base 2 on which rests a block of stacks of fixed conductive blades 3, 5 and mobile 4 constituting rest-work contacts or RT contacts.
  • the conductive strips 3, 4, 5 and their wiring pins 6 are positioned between insulating plates 7, 9, 10, 11 which can be fitted together, some of said plates being extended towards the contact ends of the conductors by an insulating tab 8a, 8b including faces is oblique profile.
  • a metal bar 12 fixes the stacking block to the frame of the relay by a screw 13, the end of which is screwed to the base 2.
  • the relay is protected by a transparent cover 20 embedded on a base 19.
  • the "floating" of the relay in the cover is prohibited in width by the lateral sides of the cylinder head, in length by two pairs of internal ribs 21, 22 with opposite ramps and in height by a shoulder 24 at the bottom of the cover having a bearing on the cylinder head between the bent part of the small face of said cylinder head and the core of the coil.
  • Fig. 2 shows the stacking block seen in profile. It includes, for example two columns of two rows of blades 3, 4, 5 or four RT contacts.
  • the stacking block is formed by two homologous sets J1 and J2 of contiguous and / or nested elements, each of said sets constituting two RT contacts.
  • the J2 set is shown with its elements nested while the J1 set is shown with its spaced elements.
  • the row of the pair of working contact blades 5 is sandwiched by interlocking means of the plates 9 and 8b.
  • the row of the pair of rest contact blades 3 is sandwiched by interlocking means of plates 8a and 7.
  • the intermediate retaining plate 9 or 10 the pallet plates 8a and 8b and the end plate 7 are shown in more detail in FIG. 3.
  • the intermediate plate 9 of rectangular shape has on one face two parallel and symmetrical recesses 30 with vertical sides.
  • Two retaining fingers 31 molded in the mass of the wafer are each arranged orthogonally to the plane of the wafer; the base of said finger, starting from the bottom of the recess, comprises an annular cup 32.
  • the contact blades and the other plates of a stacking set have holes opposite the retaining fingers 31 and are threaded into said fingers .
  • the plate 9 has a hole 33 used for the passage of the screw 13 for fixing the stacking block of the contact blades.
  • the lateral edges of the plate have, respectively, a recess 34 and a stud 35 located on the face of the plate opposite to that provided with the fingers 31.
  • Said recess and stud have a semi-cylindrical shape oriented towards the inside of the disc. so that the stud 35 of the intermediate plate of the set J1 is received in the recess 34 of the intermediate plate of the set J2 and vice versa.
  • the face of the wafer on the right profile side 81 of its pallet has two shoulders 40 with a flat base and oblique sides, said bases forming two parallel strips.
  • the face of the plate on the oblique profile side 82 has two recesses 41 with straight sides, said recesses being superimposed on the two shoulders 40.
  • the plate has two holes 42 each opening on an annular bowl 43, 44 arranged respectively at the top of the shoulder and at the bottom of the recess; said bowls promote the plating of the blades by a suction effect.
  • the plate also has a central hole 45.
  • the pallet plates 8a and 8b of any play are positioned so that their respective oblique profile faces 83, 82 are facing each other.
  • the face of the pallet as an extension of the oblique profile face 83 of the pallet has shoulders 50 with oblique sides.
  • the opposite face located on the opposite side with a straight profile 84 of the pallet has recesses 51 with straight sides.
  • it has two holes 52 each opening onto a shoulder and a recess via a respective annular bowl 53, 54 and a central hole 55.
  • the end plate 11 is shown in more detail in FIG. 6. It has on its external face a wide hollow band 70 throughout its length. The opposite face of said plate has two shoulders 71 similar to those of the previous plates. Lateral holes 72 centered on said shoulders each open out via an annular bowl 73 on the hollowed-out face 70. A central hole 75 passes through the plate.
  • the pads 8b, 8a and 7 of the set J1 for example are threaded through their respective lateral holes 42, 52 and 62 in the fingers 31 of the pad 9 by interposing between said pads the contact blades 5, 4, 3 and the pins 6 as shown in fig. 2, said blades and pins also being inserted in the fingers 31.
  • the ends of the fingers 31 are then riveted in the corresponding cups 63 by ultrasound.
  • the plates, blades and pins are assembled in sets J1, J2, J3 to form end sets J1, J2 of the stacking block and sets J3 inside said block.
  • This pre-assembly of the elements by sets J1, J2, J3, facilitates storage and makes it possible to manufacture relays with number of contacts varying on request, by simple fitting of a combination of said sets, the stacking blocks thus being produced so modular.
  • the stacking block detailed in FIGS. 2 and 4 can be fixed to the cylinder head by two different means making it possible to apply distributed pressure to said block.
  • a first fixing means consists of a bar 12 (fig. 6) with flexible branches comprising on either side of a rigid central part a straight part 15 and a curved end 16.
  • the central part of the plate has a reinforcement annular 17 pierced with a hole 18.
  • the bar 12 is disposed in the housing 70 of the end plate 11 and the pins 60 of the end plate 7 are adjusted in the holes 85 of the base 2 (figs 5, 6 and 9) fixed transversely on the relay cylinder head 1.
  • Said base has in the center a threaded hole 87 into which is screwed the threaded end of the screw 13 which applies the stacking block against the base by pressing the central part 17 and end parts 16 of the bar.
  • the base comprises opposite the frame 88 a recess 89 allowing the free play of said frame.
  • Another fastening means consists of a flexible U-shaped flange 90 (FIG. 10), the common branch of which comprises towards the inside of the U a central bulge 91, and two lateral bulges 92, 93.
  • the common branch of the flange is placed in the recessed part 70 of the plate of the stacking block.
  • the cylinder head does not have a base 2 but two lateral notches 94 receiving the ends 95 of the flange 90 and the pins of the stacking block.
  • the bulges of the flange exert a clamping pressure of the pads distributed over the central and lateral zones of said pads.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Surgical Instruments (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Connection Of Plates (AREA)
EP19800400877 1979-06-20 1980-06-17 Relais électromagnétique Expired EP0021976B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7915783 1979-06-20
FR7915783A FR2459545A1 (fr) 1979-06-20 1979-06-20 Relais electromagnetique

Publications (2)

Publication Number Publication Date
EP0021976A1 EP0021976A1 (fr) 1981-01-07
EP0021976B1 true EP0021976B1 (fr) 1984-05-30

Family

ID=9226850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800400877 Expired EP0021976B1 (fr) 1979-06-20 1980-06-17 Relais électromagnétique

Country Status (3)

Country Link
EP (1) EP0021976B1 (enExample)
DE (1) DE3068013D1 (enExample)
FR (1) FR2459545A1 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4532487A (en) * 1983-02-28 1985-07-30 Matsushita Electric Works, Ltd. Relay structure
WO2022228751A1 (en) * 2021-04-30 2022-11-03 Hitachi Energy Switzerland Ag Electromagnetic relay

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2838631A (en) * 1955-02-01 1958-06-10 Westinghouse Air Brake Co Electrical relays
DE1171086B (de) * 1960-10-05 1964-05-27 Standard Elektrik Lorenz Ag Befestigung von Federsaetzen, insbesondere von Relais mit Drahtfedern
US3431521A (en) * 1966-02-24 1969-03-04 Fujitsu Ltd Electromagnetic relay of small size and simple structure with unitary core and yoke member
US3406361A (en) * 1966-05-11 1968-10-15 Square D Co Electromagnetic relay having parts retained by a one-piece spring clip which also provides armature bias
US3548139A (en) * 1967-11-07 1970-12-15 Gen Signal Corp Electromagnetic relay structure
ZA701531B (en) * 1969-03-13 1971-04-28 Davall S & Sons Ltd Improvements in or relating to electrical relay devices
GB1337678A (en) * 1971-03-03 1973-11-21 Hopwood Developments Ltd F W Relay units
FR2254873A1 (en) * 1973-12-18 1975-07-11 Gp App Electro Mecaniqu Electro-magnetic bistable relay - has vibration damping contact blade and permanent magnet locking relay

Also Published As

Publication number Publication date
DE3068013D1 (en) 1984-07-05
FR2459545A1 (fr) 1981-01-09
EP0021976A1 (fr) 1981-01-07
FR2459545B1 (enExample) 1982-05-14

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