EP1143473A2 - Unité de contact à lame pour un relais à armature pivotante - Google Patents

Unité de contact à lame pour un relais à armature pivotante Download PDF

Info

Publication number
EP1143473A2
EP1143473A2 EP01107362A EP01107362A EP1143473A2 EP 1143473 A2 EP1143473 A2 EP 1143473A2 EP 01107362 A EP01107362 A EP 01107362A EP 01107362 A EP01107362 A EP 01107362A EP 1143473 A2 EP1143473 A2 EP 1143473A2
Authority
EP
European Patent Office
Prior art keywords
spring
contact unit
contacts
spring element
unit according
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Withdrawn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
EP01107362A
Other languages
German (de)
English (en)
Other versions
EP1143473A3 (fr
Inventor
Michael Dittmann
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.)
TE Connectivity Germany GmbH
Original Assignee
Tyco Electronics AMP GmbH
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 Tyco Electronics AMP GmbH filed Critical Tyco Electronics AMP GmbH
Priority to EP01107362A priority Critical patent/EP1143473A3/fr
Publication of EP1143473A2 publication Critical patent/EP1143473A2/fr
Publication of EP1143473A3 publication Critical patent/EP1143473A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/548—Contact arrangements for miniaturised relays

Definitions

  • the invention relates to a spring contact unit for a relay with a rocker armature which is particularly suitable for high frequency applications.
  • Relays with a rocker armature are known in great numbers. Relays of this type usually have a symmetrical magnetic system, an armature bridging the stretch between two pole faces of a core arrangement. The armature is pivotally mounted in the centre between the pole faces and connected to a spring contact unit. Switching contacts located on spring contacts are switched between a closed and an open position due to the movement of the armature.
  • a relay is known, for example, from DE 43 09 618 A1 which has a rocker armature with a spring contact unit fastened thereon.
  • the spring contact unit consists here of two elongated spring contacts which are embedded in a central portion in a moulded-plastic component. Mounting strips, on which the spring contact unit is applied on a stationary relay part, are moulded onto the spring contacts on the longitudinal sides in the central region.
  • the spring contacts are insulated from one another so that the mounting strips represent simultaneously the electrical connection to one of the spring contacts, in each case.
  • a design of this type of the spring contact unit is, however, inadequate for high frequency applications, as a relatively strong electromagnetic coupling between the two spring contacts, which are otherwise insulated from one another, is inevitable.
  • a spring contact unit with a rocker armature with at least two spring contacts designed as bridging contacts, a spring element arranged between the spring contacts, two fastening elements arranged in the centre on two opposing sides of the spring element, the spring contacts, in each case, being fastened in an insulated manner on an outer end of the spring element, and resilient portions being located between the fastening points of the spring contacts on the spring element and a central region of the spring element.
  • the main advantage of the spring contact unit according to the invention lies in the fact that the spring contacts can be designed in such a way that they only have a very small face and are therefore insensitive to couplings. Moreover, they can be produced from a material with high electrical conductivity but relatively poor spring properties, which is a further advantage. This possibility results from the fact that the spring contacts are subjected only to a slight spring-loading while the main spring-loading is on the spring element.
  • the spring element which has a relatively large face and is sensitive to electromagnetic and electrical couplings can be earthed, so that no problems can arise therefrom.
  • the spring contacts are designed as slotted leaf springs, so double contacts are formed.
  • One leg of the protected region can be extended in design here, so that these regions can cooperate with earthing tabs in the opened state, so the spring contacts are earthed in the opened state.
  • the other legs of the slotted regions, in each case, are then short in design to keep the overall size small.
  • an armature of the relay is preferably connected to the spring contact unit by a moulded-plastic component.
  • the fastening elements of the spring contact unit thus form an armature swivel axis.
  • Figure 1 shows a relay provided for receiving a spring contact unit 2 according to the invention.
  • a coil 3 with a core arrangement 4 is provided in the upper part of a housing 1. Underneath it is an armature 5 located on the spring contact unit 2. Connecting elements 6 extend from the lower part of the housing 1.
  • Figure 2 shows the spring contact unit 2, which is used in the relay in Figure 1, separately.
  • the spring contact unit has a spring element 7, in the centre of which fastening elements 8 are provided on two opposing sides.
  • Spring contacts 9 are provided, in each case, in the direction of the two outer ends of the spring element.
  • Figure 2 does not show the spring contacts connected to the spring element 7, as only the metal parts of the spring contact unit 2 are shown and the connection between the spring element 7 and the spring contacts 9 is made by moulded-plastic components.
  • the essential point of the invention consists in the fact that the spring contacts 9 are fastened to the spring element 7 in the direction of the outer ends thereof through resilient portions 10 that are located between the fastening points of the spring contacts 9 on the spring element 7 and the central region of the spring element 7.
  • the main contact force is therefore not applied by the spring contacts 9, but by the resilient portions 10 of the spring element 7.
  • Connecting elements connecting the spring contacts 9 to the spring element 7 are not shown in Figure 2, as already mentioned. However, they can be seen in Figure 3.
  • the connecting elements 11 shown there extend over the whole breadth of the spring contact unit 2, in a web-like manner. These connecting elements 11 are advantageously produced in an injection moulding process.
  • a moulded-plastic component 12 which surrounds the central region of the spring element 7 and is located on the armature 5. Journals 13 of the moulded-plastic component 12 extend, in this process, through corresponding recesses in the armature 5, projecting through the recesses and fixing the armature 5 in this position on the upper side of the armature 5 by thermal deformation.
  • the fastening elements 8 are advantageously designed in such a way that they form a face which is perpendicular to the plane in which the spring contact unit 2 is located or which is determined by the base of a socket unit of a relay. The advantage of this design will be explained hereinafter.
  • FIG 4 shows a suitable stationary contact unit.
  • the spring contacts 9 need, in each case, two stationary contacts 14.
  • Connecting elements 6 extend on from the stationary contacts 14 and are bent downwards in such a way that the connecting elements 6 project from the plastic material nf the encapsulation after the partial encapsulation has been formed by injection moulding of the metal elements shown. A header is thus formed.
  • the stationary contact unit also fulfils a further function.
  • the assembly arms 15 are bent upwards in such a way that they extend parallel to the fastening elements 8 of the spring contact unit.
  • Connecting elements are also bent off from the assembly arms 15, so that the assembly arms 15 can be connected to earth potential.
  • the spring element 7 of the spring contact unit 2 is thus also connected to earth potential in the installed state.
  • the two spring contacts 9 are decoupled from one another, and the damping is increased sharply.
  • the resilient portions 10 of the spring element 7 on which the spring contacts 9 are fastened extend laterally over the whole length of the spring contacts 9, there is also screening towards the sides.
  • the elements of the stationary contact unit provided for connecting to earth potential are of as large a surface as possible for screening purposes.
  • earthing tabs 16 are provided, as a result of which the possibility for movement of the spring contacts 9 is limited in the installed state of the spring contact unit 2. The possibility for movement is limited by the stationary contacts 14 in one direction and by these same earthing tabs 16 in the other direction. As the earthing tabs 16 are also connected to earth potential and the spring contacts 9 contact the earthing tabs 16 in the opened state, the spring contacts 9 are, in each case, earthed in the open state.
  • Figure 5 shows a second embodiment of a spring contact unit according to the invention.
  • the central region of a spring element 27 and fastening elements 28 moulded thereon do not substantially differ from the first embodiment of the previous figures.
  • the spring element 7 of the first embodiment is U-shaped in design so that two legs are produced
  • the spring element 27 is frame-shaped on the two sides of the central region.
  • Spring contacts 29 extend perpendicular to the longitudinal axis of the spring element 27.
  • Figure 6 shows how this embodiment of a spring contact unit according to the invention is embedded in the central region in a moulded-plastic component 32, so that there is, in turn, the possibility of positioning an armature.
  • the spring element 27 is connected to the spring contacts 29, in each case, via a plastics material connecting element 31.
  • the spring contacts 29 are slotted in design. This results in two short arms and two long arms, in each case.
  • the long arms are long in design so that they can cooperate with earthing tabs 36 of a stationary contact unit, shown in Figure 7, provided for this spring contact unit.
  • the short arms are short in design so that they have as small a face as possible for couplings and keep the space requirement low.
  • stationary contacts 14 in the first embodiment are formed by welded-on contact pieces
  • stationary contacts 34 in the second embodiment are produced by the material of the contact elements. Contact pieces could also be welded on, in this case.
  • the design of the stationary contacts depends on the required switching properties.
  • Figure 8 shows how the stationary contact unit in Figure 7 is encapsulated by injection moulding with plastics material and the spring contact unit is positioned with the armature 5. It should also be noted how the fastening elements 28 are connected to assembly arms 35, which results in the establishment of an armature swivel axis.
  • a plurality of further embodiment possibilities are conceivable which contains the essential ideas of the invention, namely keeping the face of the contact elements as small as possible and providing an intermediary piece which forms a spring element and is earthed.
  • the present embodiments allow simple and economical production as both the spring contact unit and the stationary contact unit can, in each case, be produced from a single metal sheet. Only simple stamping and bending processes and plastics material injection moulding processes are necessary for this purpose.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)
EP01107362A 2000-03-31 2001-03-26 Unité de contact à lame pour un relais à armature pivotante Withdrawn EP1143473A3 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01107362A EP1143473A3 (fr) 2000-03-31 2001-03-26 Unité de contact à lame pour un relais à armature pivotante

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1006903 2000-03-31
EP00106903 2000-03-31
EP00106903 2000-03-31
EP01107362A EP1143473A3 (fr) 2000-03-31 2001-03-26 Unité de contact à lame pour un relais à armature pivotante

Publications (2)

Publication Number Publication Date
EP1143473A2 true EP1143473A2 (fr) 2001-10-10
EP1143473A3 EP1143473A3 (fr) 2003-05-21

Family

ID=26070762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01107362A Withdrawn EP1143473A3 (fr) 2000-03-31 2001-03-26 Unité de contact à lame pour un relais à armature pivotante

Country Status (1)

Country Link
EP (1) EP1143473A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6970060B2 (en) * 2002-02-19 2005-11-29 Fujitsu Component Limited Micro relay of which movable contact remains separated from ground contact in non-operating state

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0859392A2 (fr) * 1997-02-13 1998-08-19 Siemens Aktiengesellschaft Dispositif à ressorts de contact pour commande par armature basculante
WO1999001882A1 (fr) * 1997-06-30 1999-01-14 Siemens Aktiengesellschaft Relais electromagnetique

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0859392A2 (fr) * 1997-02-13 1998-08-19 Siemens Aktiengesellschaft Dispositif à ressorts de contact pour commande par armature basculante
WO1999001882A1 (fr) * 1997-06-30 1999-01-14 Siemens Aktiengesellschaft Relais electromagnetique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6970060B2 (en) * 2002-02-19 2005-11-29 Fujitsu Component Limited Micro relay of which movable contact remains separated from ground contact in non-operating state

Also Published As

Publication number Publication date
EP1143473A3 (fr) 2003-05-21

Similar Documents

Publication Publication Date Title
EP1246214B1 (fr) Relais électromagnétique
US7335040B2 (en) Electromagnetic relay
US20020036557A1 (en) Electromagnetic relay
US6873232B2 (en) Miniaturizable electromagnetic relay
US5515019A (en) Polarized power relay
US7135946B2 (en) Electromagnetic relay having at least one relay actuator and a receptacle for relay actuators
US20070008053A1 (en) Electromagnetic relay
KR970000087Y1 (ko) 유극 릴레이
US4758809A (en) Electromagnetic relay having a multifunction retaining spring
JP3308544B2 (ja) 電磁式の継電器
JP2002334643A (ja) 電気切換え要素
US7538646B2 (en) Relay with reduced leakage current
EP0727803B1 (fr) Relais polarisé
US20010038326A1 (en) Spring contact unit for a relay with a rocker armature
EP1143473A2 (fr) Unité de contact à lame pour un relais à armature pivotante
JP2002507317A (ja) 電磁式の継電器
JPH04245126A (ja) 操作スライダを備えた電力リレー
US4482876A (en) Electromagnetic relay
CN102113079A (zh) 开关器件
JP5025321B2 (ja) 電磁継電器
JP2002008506A (ja) 電磁継電器
US6034583A (en) Polarized electromagnetic relay
CN111463069A (zh) 电磁继电器
US6118359A (en) Polarized electromagnetic relay
JP7363619B2 (ja) 電磁接触器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20031122