EP0697706A2 - Structure d'attache d'armature pour un relais électromagnétique - Google Patents

Structure d'attache d'armature pour un relais électromagnétique Download PDF

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Publication number
EP0697706A2
EP0697706A2 EP95110514A EP95110514A EP0697706A2 EP 0697706 A2 EP0697706 A2 EP 0697706A2 EP 95110514 A EP95110514 A EP 95110514A EP 95110514 A EP95110514 A EP 95110514A EP 0697706 A2 EP0697706 A2 EP 0697706A2
Authority
EP
European Patent Office
Prior art keywords
spring
section
anchor
armature
bearing
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
EP95110514A
Other languages
German (de)
English (en)
Other versions
EP0697706B1 (fr
EP0697706A3 (fr
Inventor
Horst Hendel
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
Publication of EP0697706A2 publication Critical patent/EP0697706A2/fr
Publication of EP0697706A3 publication Critical patent/EP0697706A3/fr
Application granted granted Critical
Publication of EP0697706B1 publication Critical patent/EP0697706B1/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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/28—Parts movable due to bending of a blade spring or reed

Definitions

  • the invention relates to an armature holder for an electromagnetic relay with a flat yoke leg arranged parallel to a coil core, which forms on its end face a bearing edge for a plate-shaped armature and at least one retaining pin projecting over the end face, the armature being arranged approximately at right angles to the yoke leg and with the coil core forms a working air gap, further with an armature spring made of sheet metal, which is fastened flat with a bearing section on the armature side facing away from the coil core and is held on the retaining pin with a biasing section.
  • An anchor bracket of this type is already known for a relay, which is described in DE 35 28 715 A1.
  • the armature rests on the end face of the yoke leg, it having a recess in the area of a respective holding pin.
  • the armature spring is bent outwards in the bearing area away from the yoke leg and fastened with its retaining tabs on the smooth surface of the retaining pin or pins, which must be done, for example, due to the effective forces by a welding process or in a similar manner. Since the bearing point of the armature does not coincide with the axis of movement of the spring, a certain bearing friction in the armature bearing can be expected, which is undesirable.
  • the aim of the present invention is to provide an anchor bracket of the type mentioned, in which a very low-friction and abrasion-resistant anchor bearing is created by a specific anchor-yoke-spring combination.
  • the anchor together with the spring should be easy to assemble with few parts, especially with a few simple operations; at the same time, clamping effects between anchor, yoke and spring should be avoided.
  • this goal is achieved with an anchor bracket of the type mentioned in that the bearing edge is formed between the end face and the broad side of the yoke leg facing the core, that the anchor is supported with its end face on the broad side of the yoke leg, that the anchor spring with its Bearing section rests on the end face of the yoke leg and that the biasing portion of the armature spring is supported on the holding pin with such a preload that the bearing inner edge formed between the bearing section of the spring and the armature end face is pressed against the bearing edge of the yoke leg.
  • the anchor does not rest on the end face of the yoke leg as in most conventional cases, rather it is supported with its end face on the broad side of the yoke, the end face of the anchor forming an inner bearing edge together with the anchor spring, which includes the bearing edge formed by the end of the yoke leg.
  • the bearing axis of the armature and that of the spring coincide with it so that the friction in the bearing is minimized. Due to the direction of the forces with which the armature is pressed into the bearing, it is also sufficient to simply hang the prestressing section of the armature spring from the yoke outside facing away from the armature into a notch or the like of the holding pin. This also results in simple assembly, since a welding process or the like is not required. (The anchor is connected to the anchor spring by welding or riveting before it is mounted on the yoke.)
  • the anchor With the type of anchor bearing provided here on the broad side of the yoke leg, the anchor can remain connected to the yoke leg without cuts over the entire yoke width, which has a good effect on the magnetic transition, because neither the anchor spring nor the retaining pin cut through the bearing edge.
  • the bearing edge should have a smaller cross-section than the inner edge formed between the armature end face and the bearing section of the spring, with the choice of the attachment point of the prestressing section of the spring on the Retaining pin the restoring force for the anchor is specified.
  • the hook-in point and thus the restoring force can be adjusted by deforming the retaining pin, that is, by bending it about an axis parallel to the bearing edge.
  • the preload section expediently interlocks with the retaining pin in such a way that it and the anchor are secured against displacement in the direction parallel to the bearing axis.
  • the bearing edge is divided into two separate edge sections by the projecting retaining pin or by additional yoke stages, the bearing section of the armature spring corresponding to the edge sections forming two spring bars between which the prestressing section is cut free.
  • a reverse embodiment would also be conceivable, in which a central edge section with a bearing section of the armature spring would be provided between two lateral holding pins and two spring prestressing sections, but in this case the stability of the armature guide would be lower due to the narrower support base of the armature spring on the yoke leg.
  • the anchor spring is also designed so that the biasing portion and the bearing portion or the spring bars are adjacent to each other on a common spring end portion and get their mutual bias by opposite elastic expansion out of the plane of the spring end portion.
  • This common spring end section expediently extends parallel to the outer broad side of the yoke leg, while the bearing section and the biasing section of the armature spring are offset in an L-shaped manner toward the anchor or toward the holding pin.
  • the common spring section expediently extends parallel to the yoke leg at a certain distance, as a result of which it can be deflected during the armature movement and results in a softer spring characteristic.
  • the biasing portion is formed by a central recess to form a spring clip with a relatively small cross section, which is supported in a notch of the retaining pin.
  • the transverse web of the spring clip, which is suspended on the retaining pin, is shaped in the shape of an arc inwards, as a result of which the abovementioned securing against displacement in the direction of the armature bearing axis results.
  • the relay shown in the drawing has a core 1 in a base body or coil body, not shown, which is connected to an L-shaped yoke 2, a free yoke leg 21 extending parallel to the core.
  • An armature 3 is mounted on the yoke leg 21 and forms a working air gap with a core pole plate 4. It is held by an anchor spring 10 in a manner to be described later;
  • a second contact spring 11a indicated by dashed lines in FIG. 4, can be used, for example, to make bridges or double contacts.
  • the power supply to the contact spring takes place via a strand 8 and a connection element, not shown.
  • the end face of the armature 3 is coupled to the broad surface of the yoke leg 21 facing the core.
  • the yoke leg forms a bearing edge 22 on its end face, which is, however, formed in the form of two edge sections only on the outer regions of the yoke leg 21.
  • the armature spring 10, which is cut out in the form of a frame in the bearing area, has a bearing section in the form of two spring bars 12 which are fastened to rest on the outside of the armature 3 facing away from the core, for example by rivets 31.
  • the spring bars 12 form an inner edge 32 with the end face of the armature 3, which rests on the bearing edge 22.
  • the end face 23 of the yoke leg 21 is slightly chamfered, so that the bearing edge 22 has an angle of slightly less than 90 ° in cross section in order to ensure the free movement of the armature 3 with the spring bars 12 on the bearing edge 22.
  • the armature spring 10 is preferably made of a harder material than the soft iron of the yoke 2, for example of stainless steel. In this way, the material pairing of the yoke on the one hand and the armature spring on the other hand results in a good bearing property.
  • the yoke leg 21 is slightly extended and thus forms yoke steps 24, which secure the armature against lateral impact and additionally improve the magnetic coupling of the armature 3 to the yoke leg 21.
  • the width of the yoke steps 24 is selected such that a distance to the spring bars 12 remains in each case in order to avoid a frictional movement between the spring bars and the yoke step.
  • the yoke leg 21 has, in the extension of its end face and in the middle between the two yoke stages 24, a projecting retaining pin 25 which has a notch 26 for hanging in a prestressing section 13 of the armature spring.
  • This biasing section 13 is formed by a central recess 17 to form a spring clip with a relatively narrow web width and thus a small cross section, so that it has a soft spring characteristic.
  • the transverse web 14 of the spring clip located in the hooking notch 26 of the retaining pin is also drawn inward in an arc shape, as a result of which the spring clip and with it the anchor are centered.
  • a mounting bracket 15 is also formed, with the help of which the spring clip can be gripped and hung during assembly.
  • the armature-armature-spring combination with the forces F1 and F2 is pressed against the bearing edge 22 in two directions.
  • the position of the attachment point in the notch 26 generates a prestressing moment for the armature with respect to its pivot point on the inner edge 32, as a result of which the rest contact force is determined.
  • the retaining pin 25 is weakened in cross section by an adjusting notch 27 so that it can be deformed along the double arrow 28 in order to set the hooking point in the notch 26 and thus the pretension.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Impact Printers (AREA)
EP95110514A 1994-08-19 1995-07-05 Structure d'attache d'armature pour un relais électromagnétique Expired - Lifetime EP0697706B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4429552 1994-08-19
DE4429552A DE4429552A1 (de) 1994-08-19 1994-08-19 Ankerhalterung für ein elektromagnetisches Relais

Publications (3)

Publication Number Publication Date
EP0697706A2 true EP0697706A2 (fr) 1996-02-21
EP0697706A3 EP0697706A3 (fr) 1998-02-25
EP0697706B1 EP0697706B1 (fr) 1999-10-13

Family

ID=6526157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95110514A Expired - Lifetime EP0697706B1 (fr) 1994-08-19 1995-07-05 Structure d'attache d'armature pour un relais électromagnétique

Country Status (4)

Country Link
US (1) US5534834A (fr)
EP (1) EP0697706B1 (fr)
JP (1) JPH0869736A (fr)
DE (2) DE4429552A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2650900A1 (fr) * 2010-12-06 2013-10-16 Omron Corporation Relais électromagnétique

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9610190A (pt) * 1995-08-23 1998-12-15 Siemens Ag Relé eletromagnético e seu emprego em uma placa de circuito impresso
DE19544624C1 (de) * 1995-11-30 1997-01-02 Hella Kg Hueck & Co Elektromagnetisches Klappankerrelais
US6679488B2 (en) * 2000-05-08 2004-01-20 Tyco Electronics Amp Gmbh Armature spring for a relay
US6498561B2 (en) * 2001-01-26 2002-12-24 Cornerstone Sensors, Inc. Thermistor and method of manufacture
DE10200619B4 (de) * 2001-02-22 2006-07-13 Tyco Electronics Amp Gmbh Elektromagnetisches Schaltrelais
AUPR475301A0 (en) * 2001-05-04 2001-05-31 Alcatel Micro-relay for telecommunications network configuration
ES2240617T3 (es) 2001-08-10 2005-10-16 Tyco Electronics Amp Gmbh Rele conmutador con resorte de armadura mejorado.
DE10162585C1 (de) * 2001-12-19 2003-04-24 Gruner Ag Prellreduziertes Relais
DE102008039704A1 (de) * 2008-08-26 2010-03-04 Tyco Electronics Amp Gmbh Kontaktanordnung mit gebogener Litze, Relais mit Kontaktanordnung und Verfahren zur Montage eines Relais
DE102008039705B4 (de) * 2008-08-26 2018-05-30 Te Connectivity Germany Gmbh Kontaktbaugruppe für ein Relais, Relais mit Kontaktbaugruppe und Verfahren zur Montage eines Relais
SG2012068896A (en) * 2012-09-17 2014-04-28 Schneider Electric South East Asia Hq Pte Ltd Tool and method for switching an electromagnetic relay
DE102014103247A1 (de) * 2014-03-11 2015-09-17 Tyco Electronics Austria Gmbh Elektromagnetisches Relais

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528715A1 (de) 1985-08-09 1987-02-19 Siemens Ag Elektromagnetisches relais

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214469B1 (fr) * 1985-08-09 1990-11-28 Siemens Aktiengesellschaft Relais électromagnétique
BR9001560A (pt) * 1990-04-04 1990-11-06 Schrack Eletronica Ltda Tele miniatura aperfeicoada
DE9015406U1 (de) * 1990-11-09 1992-03-05 Siemens AG, 8000 München Elektromagnetisches Relais mit auf dem Anker befestigter Kontaktfeder
US5155458A (en) * 1991-11-04 1992-10-13 Gamble John G Normally closed AC relay
JP2588956Y2 (ja) * 1993-04-14 1999-01-20 ナイルス部品株式会社 電磁継電器
DE4320831C1 (de) * 1993-06-23 1994-07-07 Hella Kg Hueck & Co Ankerlagerung für ein Klappankerrelais

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528715A1 (de) 1985-08-09 1987-02-19 Siemens Ag Elektromagnetisches relais

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2650900A1 (fr) * 2010-12-06 2013-10-16 Omron Corporation Relais électromagnétique
EP2650900A4 (fr) * 2010-12-06 2017-04-26 Omron Corporation Relais électromagnétique

Also Published As

Publication number Publication date
DE4429552A1 (de) 1996-02-22
EP0697706B1 (fr) 1999-10-13
JPH0869736A (ja) 1996-03-12
EP0697706A3 (fr) 1998-02-25
DE59507034D1 (de) 1999-11-18
US5534834A (en) 1996-07-09

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