EP0252344A1 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP0252344A1
EP0252344A1 EP87108722A EP87108722A EP0252344A1 EP 0252344 A1 EP0252344 A1 EP 0252344A1 EP 87108722 A EP87108722 A EP 87108722A EP 87108722 A EP87108722 A EP 87108722A EP 0252344 A1 EP0252344 A1 EP 0252344A1
Authority
EP
European Patent Office
Prior art keywords
spring
leg
contact
contact spring
armature
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
EP87108722A
Other languages
German (de)
English (en)
Other versions
EP0252344B1 (fr
Inventor
Herbert Dipl.-Ing. Mitschik (Fh)
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to AT87108722T priority Critical patent/ATE64671T1/de
Publication of EP0252344A1 publication Critical patent/EP0252344A1/fr
Application granted granted Critical
Publication of EP0252344B1 publication Critical patent/EP0252344B1/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
    • H01H50/54—Contact arrangements
    • H01H50/60—Contact arrangements moving contact being rigidly combined with movable part of magnetic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal

Definitions

  • the invention relates to an electromagnetic relay with a core interspersed with its axis arranged parallel to a base plane, a yoke arranged parallel to the coil axis next to the winding, with a flat armature which is mounted on the free yoke end and with the free core end forms a working air gap and with a contact arrangement arranged on the end face on the side of the armature opposite the coil with at least one fixed counter-contact element and a contact spring which is operatively connected to the armature and whose connecting elements are anchored in a base body.
  • Such a relay structure is the subject of the earlier application P 35 38 613.4, for example.
  • This design is chosen especially for relays with a compact design, but with a heavy current contact. So that the overall structure does not exceed a predetermined width, which is already filled by the coil and the adjacent yoke, the actual contact unit is arranged on the front side in front of the coil and in front of the armature.
  • a problem with such a relay structure is to produce the contact spring, which is to carry a high current and therefore has a correspondingly large cross section, that is to say a correspondingly large spring width, with the smallest possible spring rate, so that the force to be applied by the armature and correspondingly the Switching capacity of the relay can be kept as low as possible.
  • the requirement therefore consists in making the contact spring as long as possible in order to achieve a low spring rate to execute.
  • the contact spring is inserted in a channel formed by the yoke, so that it can extend with a section parallel to the coil axis.
  • the space required for the movement increases the width of the relay structure.
  • the object of the invention is to develop a relay of the type mentioned in such a way that the contact spring can receive the smallest possible spring rate, but does not increase the width of the relay structure.
  • this object is achieved in that the contact spring is anchored in the area of one side of the base body adjacent to the armature bearing, extends with a first leg essentially over the entire width of the relay interior and in the area of the opposite side of the base body with the free armature end is coupled that the contact points are close to the second side of the base body and that a second leg of the contact spring extends in a U-shape from the free armature end to the contact point.
  • the available width of the relay for the spring is fully utilized, with the U-shaped second spring leg making the armature movement to the contact point is transmitted.
  • the spring With its L-shaped or Z-shaped first spring section and the U-shaped second spring section attached to it, the spring is given a total Y shape which makes optimal use of the available contact space in order to achieve the lowest possible spring rate with the smallest space requirement, on the other hand also the necessary creepage distances and clearances between the contact point and the armature of the relay for the scarf guarantee high current or high voltages.
  • the contact point is moved out of the bearing plane of the armature by the U-shaped second spring leg, so that there is a relatively large friction for self-cleaning and shock absorption of the contacts.
  • the first and the second leg of the contact spring can for example be bent in one piece from a spring material with a constant thickness. Since a larger spring rate is desired for the U-shaped second spring leg than for the first leg, this second spring leg can be stiffened somewhat, for example, by beads or similar shapes.
  • the two spring legs prefabricate the two spring legs from different leaf spring material and to connect them to one another by welding or similar measures.
  • the two spring legs can be made either from different materials with different spring properties or from spring plates with different thicknesses. So it is also possible to design the second spring leg in cross-section so that it dissipates the heat (caused by the switching arc) well from the contact; this heat can be partially dissipated from the second spring leg to the anchor, so that the first spring leg is not thermally stressed.
  • the relay shown in FIGS. 1 and 2 has a housing consisting of a base 1 and a cap 2, in which a coil body 3 with winding 4 and an angular yoke 5 are arranged.
  • a coil core 6 is coupled on the one hand to the yoke 5 and has at its other end a pole plate 7 which forms a working air gap with a plate-shaped armature 8.
  • This armature 8 is supported at the free end of the yoke 5, a bearing plate 9 placed on the yoke forming a bearing notch with the yoke.
  • the bearing plate 9 is hooked onto the lugs 5a of the yoke with laterally formed locking tabs 9a.
  • a bearing spring 10 is formed, which engages with a spring portion 10a bent upwards into a notch 11 of the armature and presses it into the bearing.
  • the width of the relay is determined by the diameter of the coil 3, 4 and the thickness of the yoke 5, which, lying side by side, occupy the entire width between the two side walls of the housing cap 2.
  • a contact space 12 is provided, in which two mating contact elements 13 and 14 and a connecting element 15 for a central contact spring 16 are arranged and anchored in the base, for example by means of plug-in fastening.
  • This center contact spring consists of two spring legs, a substantially elongated first spring leg 16a bent at the ends in a Z-shape and a substantially U-shaped second spring leg 16b.
  • connection element 15 for the contact spring is moved as far as possible to the one side wall 2a of the cap 2 and is arranged in the base 1 approximately parallel to this side wall.
  • the spring section 16a is fastened to the outside of the connecting element 15 with a bent fastening section 16c, so that from this fastening section 16c to the free anchor end with the driver tooth 17 creates the longest possible spring length. So that the width of the relay is largely used for the contact spring.
  • the end 16d of the spring leg 16a is connected to the U-shaped spring leg 16b near the free anchor end, for example welded.
  • This U-shaped spring leg 16b has at one end a bent driver tab 16e with which it is hooked into the driver tooth 17 of the armature 8.
  • the other end of the U-shaped contact spring leg 16b carries the center contact 18, which interacts with the counter-contacts 19 and 20.
  • the contact spring 16 must have a large cross section for guiding large currents, which is achieved by a large width perpendicular to the image plane of FIG. 2.
  • the two spring legs 16a and 16b are manufactured separately and then connected, they can also consist of spring material of different thicknesses or of materials with different spring properties. It is important that the spring leg 16a has a low spring rate, while the spring rate of the leg 16b should be larger. Under certain circumstances, this can also be achieved by additional beads or other formations, in particular when the two spring legs 16a and 16b are formed from the same material or are produced in one piece.
  • a partition is provided in the housing, which is integrally formed on the cap in the exemplary embodiment shown, but could also be provided on the base in another embodiment.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Magnetic Treatment Devices (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Contacts (AREA)
EP87108722A 1986-06-23 1987-06-16 Relais électromagnétique Expired - Lifetime EP0252344B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87108722T ATE64671T1 (de) 1986-06-23 1987-06-16 Elektromagnetisches relais.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3620937 1986-06-23
DE3620937 1986-06-23

Publications (2)

Publication Number Publication Date
EP0252344A1 true EP0252344A1 (fr) 1988-01-13
EP0252344B1 EP0252344B1 (fr) 1991-06-19

Family

ID=6303483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87108722A Expired - Lifetime EP0252344B1 (fr) 1986-06-23 1987-06-16 Relais électromagnétique

Country Status (6)

Country Link
US (1) US4740769A (fr)
EP (1) EP0252344B1 (fr)
JP (1) JPS6326920A (fr)
AT (1) ATE64671T1 (fr)
DE (1) DE3770880D1 (fr)
ES (1) ES2022211B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447976A4 (fr) * 2009-06-23 2014-09-10 Panasonic Corp Relais électromagnétique

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835118A1 (de) * 1988-10-14 1990-04-19 Siemens Ag Elektromagnetisches relais
US5872497A (en) * 1996-10-23 1999-02-16 Physio-Control Corporation High energy transfer relay
US7728704B2 (en) * 2007-06-07 2010-06-01 Trombetta, Llc Method for reducing continuous charge
JP2014165152A (ja) * 2013-02-27 2014-09-08 Fujitsu Component Ltd 電磁継電器
DE102014103247A1 (de) * 2014-03-11 2015-09-17 Tyco Electronics Austria Gmbh Elektromagnetisches Relais
US11887797B2 (en) 2016-10-07 2024-01-30 Te Connectivity Germany Gmbh Electrical switching element comprising a direct armature coupling
DE102016219529A1 (de) * 2016-10-07 2018-04-12 Te Connectivity Germany Gmbh Elektrisches Schaltelement mit unmittelbarer Ankerkopplung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR769391A (fr) * 1933-03-01 1934-08-24 Siemens Ag Relais dont l'armature est supportée par un ressort-lame
DE3437544A1 (de) * 1984-10-12 1986-04-17 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches relais

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295078A (en) * 1964-12-16 1966-12-27 Guardian Electric Mfg Company Relay
US4199740A (en) * 1978-04-24 1980-04-22 General Electric Company Switch device and method of making
US4720694A (en) * 1985-05-22 1988-01-19 Siemens Aktiengesellschaft Electromagnetic relay

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR769391A (fr) * 1933-03-01 1934-08-24 Siemens Ag Relais dont l'armature est supportée par un ressort-lame
DE3437544A1 (de) * 1984-10-12 1986-04-17 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches relais

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447976A4 (fr) * 2009-06-23 2014-09-10 Panasonic Corp Relais électromagnétique
EP3059754A1 (fr) * 2009-06-23 2016-08-24 Panasonic Intellectual Property Management Co., Ltd. Relais electromagnetique

Also Published As

Publication number Publication date
EP0252344B1 (fr) 1991-06-19
JPS6326920A (ja) 1988-02-04
DE3770880D1 (de) 1991-07-25
ATE64671T1 (de) 1991-07-15
ES2022211B3 (es) 1991-12-01
US4740769A (en) 1988-04-26

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