EP0447401B1 - Elektromagnetisches relais - Google Patents

Elektromagnetisches relais Download PDF

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Publication number
EP0447401B1
EP0447401B1 EP89909153A EP89909153A EP0447401B1 EP 0447401 B1 EP0447401 B1 EP 0447401B1 EP 89909153 A EP89909153 A EP 89909153A EP 89909153 A EP89909153 A EP 89909153A EP 0447401 B1 EP0447401 B1 EP 0447401B1
Authority
EP
European Patent Office
Prior art keywords
contact
main
yoke
connecting webs
preliminary
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 - Lifetime
Application number
EP89909153A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0447401A1 (de
Inventor
Hans-Dieter Schmid
Anton Frenznick
Dieter Mach
Karl Brandsch
Volker Busch
Manfred Mitsch
Theodor Sturm
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0447401A1 publication Critical patent/EP0447401A1/de
Application granted granted Critical
Publication of EP0447401B1 publication Critical patent/EP0447401B1/de
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
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • 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
    • H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the invention relates to an electromagnetic relay according to the preamble of claim 1.
  • the switching contact of the relay is set by a squeezing process on a central leg of the contact carrier, at the angled free end of which the relay contact is fastened.
  • the pinch is carried out in a stretching zone of the leg, which is arranged between connecting webs projecting symmetrically on both sides to adjacent legs and a yoke of the contact carrier connecting the three legs.
  • the aim is to set the main and pre-contact of power relays as simply, accurately, reliably and independently of each other as possible at low cost with as little effort as possible.
  • the relay according to the invention with the characterizing features of claim 1 has the advantage that, independently of one another, the advance of the pre-contact to the main contact, ie the contact sequence and the contact pressure and, as a result, the so-called erosion reserve can be set very precisely, quickly and reliably without the can subsequently change the set values, such as B. by elastic deformations during a bending adjustment of the contact carrier.
  • Another advantage is that the contact carrier can be produced from a single stamped part without great effort, which is to be anchored together with the magnetic yoke of the relay in a base plate.
  • a plane-parallel, angular extension of the main and pre-contact is ensured by the connecting webs projecting symmetrically on both sides from the center leg of the main and the pre-contact.
  • FIG. 1 An embodiment of the invention is shown in the drawing and explained in more detail in the following description.
  • the figure shows a power relay for motor vehicles with a pre and main contact.
  • a power relay 10 for electrical direct current consumers with a high starting current is shown, as used in particular in motor vehicles for switching on and off electromagnetic valves and electric motors.
  • the relay is with a base plate 11 made of insulating material in which a plurality of connection parts 12 are fastened, which protrude downward from the base plate 11.
  • the base plate 11 also carries an L-shaped magnetic yoke 13 which is anchored on one end face with fastening tongues in corresponding pockets of the base plate 11.
  • a relay winding 14 is arranged on a coil core 15 which is riveted with its rear end to the magnetic yoke 13.
  • a hinged armature 16 In front of the free end of the coil core 15, a hinged armature 16 is arranged, which is pivotally mounted with its rear end on the magnetic yoke 13.
  • a leaf spring 17 is riveted to the hinged armature 16, the front end of which projects beyond the hinged armature 16 and carries two switching contacts 18 and 19 which are spaced apart from one another, of which only the regions riveted to the leaf spring 17 are visible.
  • the other end of the leaf spring 17 is guided around the bearing point of the hinged armature 16 on the magnetic yoke 13 and fastened to the rear of the magnetic yoke 13 with a corresponding preload in order to achieve a restoring force for the hinged armature 16.
  • the leaf spring 17 also serves the switching contacts 18, 19 for power supply.
  • the restoring force for the hinged armature 16 can alternatively also be generated by a helical tension spring which is suspended from a respective not recognizable projection of the hinged armature 16 and the magnetic yoke 13.
  • the shortened rear end of the leaf spring 17 is connected to one of the connecting parts 12 via a welded-on copper wire.
  • the switch contact 18 on the leaf spring 17 of the hinged armature 16 interacts with a fixed pre-contact 20 and the switch contact 19 with a fixed main contact 21, which forms the normally open contact of the relay.
  • the pre-contact 20 and the switching contact 18 cooperating therewith are made of a burn-off-resistant material for absorbing the high inrush current surge, whereas the main contact 21 and the switching contact 19 interacting therewith consists of a silver-nickel alloy with low contact resistance for absorbing the continuous current.
  • Pre-contact 20 and main contact 21 are attached to a common contact carrier 22, which is also attached to the base plate 11 and is firmly connected to one of the connecting parts 12.
  • the contact carrier 22 is provided in a region running in the direction of movement of the hinged armature 16 with a plurality of legs 23 to 27 which run at a distance from one another and which start from a common yoke 28.
  • the second leg 24 carries the main contact 21 at its angled free end 24a and the fourth leg 26 carries the pre-contact 20 at the free angled end 26a.
  • the leg 24 with the main contact 21 is connected to the adjacent legs 23 and 25 by connecting webs 29 projecting symmetrically on both sides connected, which prevent an inclination of the contact when adjusting the main contact 21.
  • the leg 26 is connected to the pre-contact 21 by means of connecting webs 30 projecting symmetrically on both sides with the adjacent legs 25 and 27.
  • a stretching zone 31 and 32 is provided on the legs 24 and 26 carrying the main contact 21 and the pre-contact 20, respectively.
  • the embossing pliers then crimp the leg 26 carrying the pre-contact 20 in its stretching zone 32 and raise the angled end 26a to such an extent that the pre-contact 20 leads the main contact 21 by a desired amount of approximately 0.1 mm when the relay contacts close .
  • This advance can expediently be specified by a correspondingly thicker pre-contact 20 with respect to the main contact 21, so that the leg ends 26a and 24a can be angled at the same height during the manufacture of the contact carrier 22. In addition, this prevents excessive squeezing in the stretching zone 32 of the leg 26.
  • all the legs 23 to 27 of the contact carrier 22 are rigidly connected to one another at their ends facing away from the main contact 21 and pre-contact 20 via the common yoke 28, this yoke 28 being so stably fastened on the base plate 11 via a base plate 33 of the contact carrier 22 that the yoke 28 does not yield during the adjustment process.
  • the lower leg 23 is kept relatively short.
  • the contact carrier 22 can also with another area, for. B. the yoke area on the base plate 11 or other supporting parts of the relay.
  • the main and pre-contact can be adjusted independently of one another through the extension zones 31 and 32 of the legs 24, 26 carrying them, the lateral connecting webs 29, 30 serving for lateral guidance and partly also for power conduction.
  • the connecting webs 29, 30 located between the legs 24 and 26 with the main contact 21 and the pre-contact 20 are expediently connected to a common adjacent leg 25.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
EP89909153A 1988-12-10 1989-08-16 Elektromagnetisches relais Expired - Lifetime EP0447401B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3841667 1988-10-12
DE3841667A DE3841667C1 (enExample) 1988-12-10 1988-12-10

Publications (2)

Publication Number Publication Date
EP0447401A1 EP0447401A1 (de) 1991-09-25
EP0447401B1 true EP0447401B1 (de) 1993-11-18

Family

ID=6368895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89909153A Expired - Lifetime EP0447401B1 (de) 1988-12-10 1989-08-16 Elektromagnetisches relais

Country Status (5)

Country Link
US (1) US5155459A (enExample)
EP (1) EP0447401B1 (enExample)
JP (1) JPH04502227A (enExample)
DE (2) DE3841667C1 (enExample)
WO (1) WO1990006588A1 (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243841C1 (de) * 1992-12-23 1994-01-27 Hella Kg Hueck & Co Elektromagnetisches Relais
DE19522931A1 (de) * 1995-06-23 1997-01-02 Siemens Ag Relais für hohe Schaltleistungen
DE19544626C2 (de) * 1995-11-30 2002-10-02 Hella Kg Hueck & Co Elektromagnetisches Relais und Verfahren zur Justierung der Anzugsspannung des elektromagnetischen Relais
US6229417B1 (en) * 1999-02-23 2001-05-08 Rockwell Technologies, Llc Operator for an electromagnetic switching device
US6771154B1 (en) * 1999-11-12 2004-08-03 Taiko Device, Ltd. Electromagnetic relay
FR2849713B1 (fr) 2003-01-06 2006-02-17 Schneider Electric Ind Sas Pole de commutation pour appareil electromagnetique
JP4042784B2 (ja) * 2003-02-28 2008-02-06 松下電工株式会社 接点装置
EP1962316A1 (en) * 2007-02-21 2008-08-27 Good Sky Electric Co., Ltd. Electromagnetic relay
JP2012198999A (ja) * 2011-03-18 2012-10-18 Fujitsu Component Ltd 複合電磁継電器
CN103094008A (zh) * 2013-01-25 2013-05-08 浙江兆正机电有限公司 接触器的接触板
JP6115198B2 (ja) * 2013-03-08 2017-04-19 オムロン株式会社 電磁継電器およびその製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068335A (en) * 1960-06-21 1962-12-11 Litton Systems Inc Dry circuit switch
DE8005773U1 (de) * 1980-03-03 1982-12-02 Robert Bosch Gmbh, 7000 Stuttgart Elektrisches Schaltelement, vorzugsweise elektromagnetischer Schalter
DE3012354A1 (de) * 1980-03-29 1981-10-08 Robert Bosch Gmbh, 7000 Stuttgart Elektrisches schaltelement, vorzugsweise elektromagnetischer schalter
DE3640997C1 (de) * 1986-12-01 1987-12-10 Bosch Gmbh Robert Elektromagnetisches Relais
DE3836096C2 (de) * 1988-10-22 1997-06-12 Bosch Gmbh Robert Elektromagnetisches Relais

Also Published As

Publication number Publication date
EP0447401A1 (de) 1991-09-25
WO1990006588A1 (de) 1990-06-14
DE58906221D1 (de) 1993-12-23
DE3841667C1 (enExample) 1990-02-01
JPH04502227A (ja) 1992-04-16
US5155459A (en) 1992-10-13

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