EP0849754A2 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP0849754A2
EP0849754A2 EP97116035A EP97116035A EP0849754A2 EP 0849754 A2 EP0849754 A2 EP 0849754A2 EP 97116035 A EP97116035 A EP 97116035A EP 97116035 A EP97116035 A EP 97116035A EP 0849754 A2 EP0849754 A2 EP 0849754A2
Authority
EP
European Patent Office
Prior art keywords
coil
armature
relay according
switching spring
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.)
Withdrawn
Application number
EP97116035A
Other languages
German (de)
English (en)
Other versions
EP0849754A3 (fr
Inventor
Josef Kern
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 Solutions GmbH
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
Publication of EP0849754A2 publication Critical patent/EP0849754A2/fr
Publication of EP0849754A3 publication Critical patent/EP0849754A3/fr
Withdrawn legal-status Critical Current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
    • H01H50/56—Contact spring sets
    • 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
    • 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
    • H01H2001/5888—Terminals of surface mounted devices [SMD]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings

Definitions

  • Such a simply constructed relay with a base body serving bobbin, a U-shaped core yoke and one plate-shaped anchor is for example from the document WO 90/09028 known.
  • the switch spring is there directly with connected to the anchor and also via an angled section welded to the yoke. So it serves both as an anchor bearing spring as well as an electrical connection for the mobile Contacts.
  • the cross sections for the load circuit be oversized to reduce the power dissipation hold, also the coil for a small power dissipation can be designed with a high winding wire volume.
  • the contact and required in the conventional structure The armature return spring must be made of a material with low relaxation behavior at high temperatures, i.e. for example made of an expensive beryllium-alloyed copper spring material be executed. These parameters physically limit the Miniaturization of electromechanical relays for large loads at high ambient temperature.
  • the aim of the present invention is to provide a relay of the input mentioned type with the simplest possible structure and to produce as few individual parts as possible, the individual parts have a simple shape and with as little processing as possible can be joined together, so that inexpensive Materials can be used and still that Volume can be kept small depending on the application.
  • the relay is intended in particular for applications with high thermal loads be suitable.
  • this goal is at the beginning of a relay mentioned type achieved in that the switching spring in attached to a peripheral region of the first coil flange is between the end sections of the core leg and of the yoke leg extends through, the anchor in an approximately parallel plane to it, and that the Switch spring in an opposite to the fastening point peripheral area of the coil flange one with the mating contact elements cooperating contact bridge carries.
  • the switching spring therefore needs not to conduct a load current itself, since this only via the Bridge contact flows at its end. She doesn't need one either It must therefore also take over the bearing function for the anchor not to be bent and can therefore be proportionate stiff material in the simplest form without subsequent Machining.
  • the spring can in principle also be made of metal; with regard a low relaxation behavior at high thermal loads and desirable isolation between the load circuit and magnetic circuit come high temperature resistant for the spring Plastic materials, but preferably a ceramic material, into consideration.
  • the relay shown in the drawing has a coil former 1 made of ceramic material, which also serves as the main body and supports for the functional elements.
  • a coil winding 2 is applied; she will limited by a first flange 3 and a second flange 4.
  • a U-shaped core yoke 5 is with a core leg 6 inserted through an axial opening 7 of the bobbin 1, while a yoke leg 8 is parallel to it next to the coil extends.
  • the coil former 1 is made of ceramic material and is preferably produced by powder injection molding. To the second flange 4 are also two coil connections 1a directly integrally formed so that they with the winding ends 2a Coil 2 can be wrapped directly. This allows the temperature-resistant Coil body 1 directly in a circuit board be soldered in.
  • first coil flange 3 In the first coil flange 3 are near the bottom two drawer-like shafts 10 and 11 molded into the two mating contact carriers 12 from opposite sides and 13 are inserted with counter contacts 12a and 13a. Furthermore is a ceramic spring as switching spring 14 of simpler rectangular shape provided with one end in the top Area of the first coil flange 3 in a formed there Slot 15 is fixed.
  • the attachment can, for example by soldering, by casting or by means of ceramic putty be made.
  • Switch spring 14 At the other end she wears Switch spring 14 is a transverse contact band, which as Bridge contact 14a with the two fixed mating contacts 12a and 13a cooperate, so when tightening the Anchor bridges.
  • the bridge contact 14a can be soldered with the pre-galvanized switching spring in this area 14 are connected.
  • the flat switching spring 14 is so outward standing obliquely clamped that they have a bias to Anchor experiences and the required restoring force delivers.
  • the armature 9 is in a free recess 16 of the bobbin flange 2 freely movable and by stops and retaining tabs 17, 18 and 19 cannot be lost on all sides secured. In the middle it has a spherical pressure wart 20 with which he is at 90 ° to the longitudinal extension of the armature rotated switching spring actuated. At The example shown is the force of the magnet system approximately with a gear ratio of 2: 1 to the bridge contact 14a transmitted. When the armature is not excited 9, the spring 14 presses the armature against the stop lugs 17, 18 and 19.
  • the assembly of the armature 9 is carried out according to the schematic representation in Figure 5 in such a way that it is initially V-shaped is angled (state 9-1); is in this state Length lx of the anchor in the area of a lateral recess 21 so shortened that lx is less than the length l1 which the Opening length of the recess 16 designated on the retaining lug 19.
  • the anchor can be in the state 9-1 on the retaining lug 19 are inserted into the recess 16. After that the anchor by attacking a force F from the back the actuating nipple 20 along one through constrictions 22 formed predetermined bending point deformed until it is approximately flat and has the length l2. With this length l2 it is captive behind the retaining lugs 17, 18 and 19
  • the time can of closing the contacts can be detected so that by a defined overpressure the required overstroke as contact erosion safety can be adjusted.
  • Figures 3 and 4 are sections III-III and IV-IV in Longitudinal and transverse directions are shown.
  • the relay can operate at higher temperatures be operated with a low-resistance coil; it can be compared to conventional relays at higher temperatures also smaller cross sections for the electrical Load circuit and the magnetic circuit are used, which means less Material is consumed. So that it can also be exposed Places with high ambient temperatures are used.
  • the bobbin is also a bobbin from a highly filled thermoplastic, for example with mineral, ceramic or glass fillers.
  • the relay can also be equipped with SMD connections if required be provided.
  • the contact arrangement can also instead of the bridge closer shown, a bridge opener or form a bridge changer.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Cookers (AREA)
  • Surgical Instruments (AREA)
  • Valve Device For Special Equipments (AREA)
EP97116035A 1996-12-19 1997-09-15 Relais électromagnétique Withdrawn EP0849754A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29622093U 1996-12-19
DE29622093U DE29622093U1 (de) 1996-12-19 1996-12-19 Elektromagnetisches Relais

Publications (2)

Publication Number Publication Date
EP0849754A2 true EP0849754A2 (fr) 1998-06-24
EP0849754A3 EP0849754A3 (fr) 1998-12-23

Family

ID=8033555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116035A Withdrawn EP0849754A3 (fr) 1996-12-19 1997-09-15 Relais électromagnétique

Country Status (4)

Country Link
US (1) US5936496A (fr)
EP (1) EP0849754A3 (fr)
JP (1) JPH10188767A (fr)
DE (1) DE29622093U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19804572A1 (de) * 1997-05-05 1999-08-12 Schrack Components Ag Relais mit Kontaktfedern
DE19814399C1 (de) * 1998-03-31 1999-10-21 Moeller Gmbh Elektromagnetisches Schaltgerät
JP5222669B2 (ja) * 2008-09-16 2013-06-26 富士通コンポーネント株式会社 電磁継電器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6188033A (ja) * 1984-10-04 1986-05-06 Kyocera Corp セラミツク製弾条体
US4734668A (en) * 1986-05-12 1988-03-29 Siemens Aktiengesellschaft Electromagnetic relay
FR2642896A1 (fr) * 1989-02-06 1990-08-10 Ruchonnet Bernard Micro-relais electromecanique
EP0393226B1 (fr) * 1989-04-21 1993-08-04 NHK SPRING CO., Ltd. Procédé de fabrication de produits céramiques notamment de ressorts

Also Published As

Publication number Publication date
EP0849754A3 (fr) 1998-12-23
US5936496A (en) 1999-08-10
DE29622093U1 (de) 1997-02-27
JPH10188767A (ja) 1998-07-21

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