EP0487947A2 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP0487947A2
EP0487947A2 EP91118843A EP91118843A EP0487947A2 EP 0487947 A2 EP0487947 A2 EP 0487947A2 EP 91118843 A EP91118843 A EP 91118843A EP 91118843 A EP91118843 A EP 91118843A EP 0487947 A2 EP0487947 A2 EP 0487947A2
Authority
EP
European Patent Office
Prior art keywords
armature
contact
bearing
yoke
relay
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
EP91118843A
Other languages
German (de)
English (en)
Other versions
EP0487947B1 (fr
EP0487947A3 (en
Inventor
Johannes Oberndorfer
Friedrich Plappert
Shigeru Tajima
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 Industry Europe GmbH
Original Assignee
Euro Matsushita Electric Works 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 Euro Matsushita Electric Works AG filed Critical Euro Matsushita Electric Works AG
Publication of EP0487947A2 publication Critical patent/EP0487947A2/fr
Publication of EP0487947A3 publication Critical patent/EP0487947A3/de
Application granted granted Critical
Publication of EP0487947B1 publication Critical patent/EP0487947B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H51/22—Polarised relays
    • H01H51/2227—Polarised relays in which the movable part comprises at least one permanent magnet, sandwiched between pole-plates, each forming an active air-gap with parts of the stationary magnetic circuit
    • 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
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature

Definitions

  • An electromagnetic relay with the features specified in the first part of claim 1 is known from DE-C-3 520 773.
  • a three-point bearing is aimed for, the middle point being formed by the journal bearing of the essentially H-shaped armature and the two outer points being formed by the abutment of one pole plate end at the respective yoke end.
  • this three-point bearing is brought about by the armature being clamped in its rest position with the corresponding pole plates resting against the yoke ends, while an armature bearing plate carrying the bearing pin is fixed to the relay body provided with the yoke by gluing.
  • the invention has for its object to provide an electromagnetic relay with more precise switching behavior and increased shock resistance.
  • the subclaims relate to expedient embodiments of the invention.
  • the claims 5 to 7 relate to different ways to achieve the desired actuating forces in the two anchor end positions.
  • the forces exerted by the contact springs lead to a resulting actuating force acting only on one anchor end.
  • the polarized electromagnetic relay shown in the drawings is one with a monostable switching behavior, FIG. 1 showing the rest position and FIG. 2 the working position.
  • the relay comprises an essentially H-shaped armature 10 with two parallel pole plates 11, 12 and a permanent magnet 14 arranged between them and held by a common plastic jacket 13.
  • a central bearing bore 15 is formed, with which the armature 10 is pivotally mounted about a cylindrical bearing pin 16.
  • the bearing pin 16 is integrally formed on an armature bearing plate 17 which is glued to the relay body 18 carrying the relay coil (not shown).
  • the difference in diameter between the bearing bore 15 and the bearing journal 16 is exaggerated in the drawings in order to illustrate the basically unavoidable bearing play.
  • the relay coil is penetrated by the central part of an essentially U-shaped yoke, the two ends 19, 20 of which project upwards (and thus perpendicular to the plane of the drawing) into the space between the respective ends of the pole plates 11 and 12.
  • the upper end of the pole plate 11 rests on the upper yoke end 19 at the contact point labeled A and the lower end of the pole plate 12 on the lower yoke end 20 on the contact point labeled B.
  • the armature 10 is clamped in the position shown in Figure 1 with its two ends opposite the yoke ends 19 and 20, while at the same time the armature bearing plate 17 is fixed to the relay body 18 by gluing that between the journal 16 and the Bearing bore 15 results in a touch at the point labeled C.
  • the bearing pin 16 can also be integrally formed on the relay body itself and the desired contact between the bearing pin 16 and the bearing bore 15 can be achieved at point C by appropriate positioning and adhesive fixing of the yoke within the relay body.
  • the relay is equipped with a total of four contact systems 21 ... 24, of which the two left as shown in Figure 1 as Flexure contact systems 21, 23 (in which the contact is made while overcoming the spring force) and the right two as lift-off contact systems 22, 24 (in which the contact opening takes place while overcoming the spring force).
  • Each of the four contact systems has a contact spring 26, which is attached at one end to a spring support 25 and carries a contact piece 27 at its free end, and a fixed contact 28 with a contact piece 29 opposite and interacting with the contact piece 27 of the contact spring 26.
  • the spring support 25 and the fixed contact 28 are provided with connecting pieces penetrating the relay body 18 for external wiring.
  • the flexure or lift-off characteristic of the respective contact system is predetermined in the exemplary embodiment shown by a corresponding inclination of the respective spring support 25.
  • Each contact spring 26 is inserted into a slot 30 of an actuator 31 or 32 at a central point between its fixed end and its contact piece 27.
  • the two actuators 31, 32 are each slidably mounted in guides 33 provided on the relay body 18 transversely to the longitudinal axis L of the armature.
  • the axis L is shown in FIG. 1 as the longitudinal axis of the relay body 18, which coincides with the actual longitudinal axis of the armature in the middle position of the armature.
  • the actuator 31 engages with a central web 34 with play in a recess 35 provided in the plastic casing 13 of the armature 10.
  • the actuator 32 engages with a central web 36 with play in a corresponding recess 37 in the armature 10 on its other End one.
  • the armature 10 In the rest position shown in FIG. 1 when the relay coil is not energized, the armature 10 is held in the illustrated position by the magnetic attraction forces which originate from the permanent magnet 14 and between the pole plate 11 and the upper yoke end 19 on the one hand and the pole plate 12 and the lower one Yokes 20 on the other hand act.
  • the actuator 31 tries to pivot the armature 10 at the point of contact between its web 34 and the recess 35 with an actuating force F1 which is the sum of the two forces F21 and 22 exerted by the contact springs 26 of the contact systems 21 and 22 on the actuator 31 F22 represents.
  • the contact spring 26 of the contact system 23 acts on the actuator 32 with the lower force F23; however, this force is transmitted to the fixed contact 28 of the closed contact system 24, so that the actuator 32 does not exert any actuating force on the armature 10.
  • the contact spring 26 of the contact system 23 acts on the actuator 32 with the lower force F23; however, this force is transmitted to the fixed contact 28 of the closed contact system 24, so that the actuator 32 does not exert any actuating force on the armature 10.
  • the lower armature end in FIG. 1 only magnetic attraction forces are thus effective in the exemplary embodiment shown.
  • the armature 10 begins to lift off at the contact point A. Since it can be pivoted in the region of the journal bearing 15, 16 about the contact point C, at the same time as the armature 10 is detached at its upper end, the lower armature end will also lift off at the contact point B and will now pivot into the working position shown in FIG. 2.
  • the three-point bearing mentioned is also present in the end position shown in FIG. 2, the two outer points being the mentioned contact points D and E between the yoke and the pole plates, while the middle point is formed by the same point of contact C between the bearing bore 15 and the journal 16.
  • the actuating forces F1 and F2 exerted by the contact systems in each of the two anchor end positions act in the same direction transverse to the longitudinal axis L of the arm due to the asymmetrical design of the side of the longitudinal axis L.
  • the anchor bearing is set up in such a way that that the point of contact C between the journal 16 and the bearing bore 15 is offset relative to the center of the bearing in the direction of the bearing force K, which acts in parallel, however, in the opposite direction to the actuating forces F1 and F2. It follows from this that the same defined bearing point C is reached in both end positions of the armature 10, in which the armature 10 abuts the yoke with both ends and both contact points inevitably open at the same time.
  • the invention is not limited to an anchor with the H-shaped design shown in the exemplary embodiment. It can also be used in relays with a rod-shaped armature which can be pivoted about a central bearing point, the two ends of which can be moved back and forth between two opposing yoke parts.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Magnetic Treatment Devices (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Percussion Or Vibration Massage (AREA)
EP91118843A 1990-11-30 1991-11-05 Relais électromagnétique Expired - Lifetime EP0487947B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9016328U 1990-11-30
DE9016328U DE9016328U1 (de) 1990-11-30 1990-11-30 Elektromagnetisches Relais

Publications (3)

Publication Number Publication Date
EP0487947A2 true EP0487947A2 (fr) 1992-06-03
EP0487947A3 EP0487947A3 (en) 1993-01-13
EP0487947B1 EP0487947B1 (fr) 1995-05-10

Family

ID=6859877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118843A Expired - Lifetime EP0487947B1 (fr) 1990-11-30 1991-11-05 Relais électromagnétique

Country Status (4)

Country Link
EP (1) EP0487947B1 (fr)
JP (1) JP3195625B2 (fr)
AT (1) ATE122499T1 (fr)
DE (2) DE9016328U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1418606A1 (fr) * 2002-11-05 2004-05-12 Matsushita Electric Works (Europe) Aktiengesellschaft Relais électromagnetique
DE10251455B3 (de) * 2002-11-05 2004-09-02 Matsushita Electric Works (Europe) Ag Elektromagnetisches Relais
CN116469730A (zh) * 2023-04-28 2023-07-21 厦门宏发电力电器有限公司 继电器
WO2024156329A1 (fr) * 2023-01-27 2024-08-02 Eaton Intelligent Power Limited Unité d'entraînement électromagnétique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5359305A (en) * 1992-06-15 1994-10-25 Matsushita Electric Works, Ltd. Electromagnetic relay

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2454967C3 (de) * 1974-05-15 1981-12-24 Hans 8024 Deisenhofen Sauer Gepoltes elektromagnetisches Relais
DE7902034U1 (de) * 1979-01-25 1980-10-16 Sauer, Hans, 8024 Deisenhofen Kontaktfederanordnung
JPS5615522A (en) * 1979-07-18 1981-02-14 Matsushita Electric Works Ltd Electromagnetic relay
DE3224013A1 (de) * 1981-08-14 1983-12-29 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches relais
DE3410424C2 (de) * 1984-03-21 1986-01-30 Sds-Elektro Gmbh, 8024 Deisenhofen Zapfengelagertes Relais
DE3520773C1 (de) * 1985-05-29 1989-07-20 SDS-Relais AG, 8024 Deisenhofen Elektromagnetisches Relais

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1418606A1 (fr) * 2002-11-05 2004-05-12 Matsushita Electric Works (Europe) Aktiengesellschaft Relais électromagnetique
DE10251454B3 (de) * 2002-11-05 2004-09-02 Matsushita Electric Works (Europe) Ag Elektromagnetisches Relais
DE10251455B3 (de) * 2002-11-05 2004-09-02 Matsushita Electric Works (Europe) Ag Elektromagnetisches Relais
WO2024156329A1 (fr) * 2023-01-27 2024-08-02 Eaton Intelligent Power Limited Unité d'entraînement électromagnétique
CN116469730A (zh) * 2023-04-28 2023-07-21 厦门宏发电力电器有限公司 继电器

Also Published As

Publication number Publication date
DE59105436D1 (de) 1995-06-14
EP0487947B1 (fr) 1995-05-10
EP0487947A3 (en) 1993-01-13
JP3195625B2 (ja) 2001-08-06
JPH06187886A (ja) 1994-07-08
ATE122499T1 (de) 1995-05-15
DE9016328U1 (de) 1992-04-02

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