EP0914665A1 - Elektromagnetisches relais und verfahren zu dessen herstellung - Google Patents
Elektromagnetisches relais und verfahren zu dessen herstellungInfo
- Publication number
- EP0914665A1 EP0914665A1 EP97931621A EP97931621A EP0914665A1 EP 0914665 A1 EP0914665 A1 EP 0914665A1 EP 97931621 A EP97931621 A EP 97931621A EP 97931621 A EP97931621 A EP 97931621A EP 0914665 A1 EP0914665 A1 EP 0914665A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- contact
- spring
- housing part
- relay 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/14—Terminal arrangements
Definitions
- the invention relates to an electromagnetic relay
- first housing part which carries a coil and a core which passes through the coil and forms pole plates outside the coil at its two ends
- a second housing part in which at least one spring support and at least one mating contact element are anchored, the spring support being one with the mating contact element cooperating contact spring carries
- An armature which is connected to the contact spring and bridges the pole plates with the formation of working air gaps.
- the invention also relates to a method for producing such a relay.
- a switching relay is described in EP 0 531 890 AI, which basically has a structure of the type mentioned at the beginning.
- the two housing parts do not form a closed housing there, but are merely a base, which is preferably a printed circuit board with an integrally formed side wall, and a cover part, between which a large housing gap remains open even after assembly.
- the relay there is preferably designed as a multiple relay with a row of magnet systems lying next to one another, a common core pole plate lying on the base and forming a row of vertically projecting core sections, each having a coil attached to it.
- Each system also has a U-shaped anchor attached to the Core pole plate is mounted and encloses the coil frame-shaped with the contact spring.
- the cover part has slots with inserted mating contact elements and spring supports, these slots also not being tight. The contacts are obviously adjusted there through the large housing opening in the area of the contacts.
- a relay is already known from WO 91/07770, in which the magnet system is fastened in the upper region of a housing, while a contact system is pushed in from the open underside until the contact closes when the magnet system is excited. After this contact system has been pushed in by a predetermined amount to generate a desired overstroke, it is fastened in the housing. In this way, manufacturing tolerances are compensated for during assembly, so that subsequent adjustment is no longer necessary.
- the aim of the present invention is to create a relay of the type mentioned at the outset with a flat structure, which is designed for different sizes and applications and which can be produced very inexpensively in large quantities using appropriate manufacturing processes. Due to the design, a high level of accuracy should already be achieved in production, so that even without subsequent adjustment, the relay characteristic values are maintained with only slight scatter.
- this goal is achieved in such a relay in such a way that the two housing parts as approximately trough-shaped half-shells made of plastic with their edges are sealed together, while the connections for the coil winding and for the contact elements are each led through the wall of their associated housing part to the outside.
- the two half-shells not only form an easily sealed housing, but they also serve as a carrier for the functional elements of the relay, these functional elements, i.e. the magnet system in one part and the contact system in the other part, already during the manufacture of the respective one Half shell can be positioned very precisely.
- the main joining planes between the two housing parts are preferably perpendicular to the switching movement of the contact spring, so that the distance between the magnet system and the contacts can be adjusted by joining the two housing parts.
- the fixing of the functional parts in the housing and the sealing of the connections are achieved particularly simply by the fact that they are embedded in the respective housing half-shell.
- the joining planes consist of plastic, preferably thermoplastic, so that a tight connection, for example with ultrasound, can be achieved in a simple manner.
- the magnet system consists of a U-shaped core yoke plate which, like at least two coil connections, is preferably embedded in a plastic coil body.
- the pole plates formed at both ends of the core then extend perpendicular to the coil axis in the area next to the coil, where they are bridged by an armature lying next to the coil.
- This anchor can be designed more or less as a flat sheet be bent at both ends to different heights in order to cooperate with correspondingly staggered pole plates. In this way, the space in the housing can be optimally used to accommodate the contacts and the various connections.
- An L-shaped contact spring which extends with one leg on the end face in front of the coil and with the other leg next to the coil below or above the armature, results in a large spring length in a narrow space; the armature is preferably fastened to the contact spring in the transition area between the two spring legs.
- a preferred method for producing the relay is that the first housing part is obtained by embedding the coil with the core including the coil connections according to the invention, that the second housing part is obtained by embedding the spring support and at least one counter-contact element that that with the armature connected contact spring is connected to the spring support, and that the two housing parts are then placed on top of one another with their edges and connected.
- the coil former is also formed beforehand by embedding the core and the coil connections, with the first housing part being produced by a second embedding after the coil has been wound and after the coil ends have been connected to the coil connections.
- the armature Before the two housing parts are joined, the armature is connected to the contact spring, depending on the application, an electrically conductive connection by welding or the like or an insulating connection by overmolding is possible.
- the contact spring is then attached in an electrically conductive manner to the spring support anchored in the second housing part, for example by welding or also by means of a plug-in fastening.
- a major advantage of the invention is also to be seen in the fact that when the two housing parts are joined, the contact overlap can be set, for example by measuring the pull-through voltage of the armature during the joining and then the joining process when a predetermined electrical characteristic value of the pull-through voltage is reached — a measure for the burn size or the overstroke of the contact - is interrupted.
- the two half-shells can also be sealed with other technologies, for example by gluing, clamping, casting or by means of an elostomer seal molded on in a two-component injection molding process.
- FIG. 1 shows a relay designed according to the invention with a partially cut-open housing
- FIG. 2 shows a coil for the relay from FIG. 1,
- FIG. 3 shows a first half-shell obtained by extrusion coating the coil
- FIG. 4 shows a second half-shell with an anchor inserted
- Figure 5 shows the second half-shell of Figure 4 without anchor in
- FIG. 6 shows an anchor welded to a contact spring
- FIG. 7 shows an anchor connected to the contact spring by extrusion coating
- FIG. 8 the second half-shell in a top view with an anchor and an attached contact spring
- FIG. 9 shows a section IX-IX from FIG. 8, but with an additional first half-shell attached
- FIG. 10 shows a relay modified somewhat compared to FIG. 1 when joining the two half-shells
- Figure 11 shows a further modification of the relay of Figure 1 with a changed connection configuration.
- the relay shown in FIGS. 1 to 5 consists of a first half-shell 1 and a second half-shell 2, the half-shell 1 being formed by overmoulding a coil 3 and the second half-shell by overmolding a spring support 21 and two mating contact elements 22 and 23.
- An L-shaped contact spring 4 is attached to the spring support 21 and in turn carries an armature 5.
- the coil is first obtained by overmolding the central section of the core 6 with thermoplastic material, as a result of which a coil body 31 is formed.
- the pole plates 61 and 62 are kept free.
- two coil connections 32 and 33 are also injected into the coil body, in such a way that not only the outwardly directed connection pins 32a and 33a, but also the inner connection surfaces 32b and 33b intended for contacting the winding ends remain free of embedding.
- After applying a coil winding 34 to the coil The ends of the steering bodies are connected to the connecting surfaces 32b and 33b. The winding ends are protected behind ribs 35 in channels 36 of the bobbin. The entire coil is then overmolded again in order to obtain the first half-shell according to FIG. 3.
- the pole faces 63 and 64 of the pole plates 61 and 62 also remain free from this extrusion coating, while the remaining parts, in particular also the coil winding 34, are embedded in the plastic 11 of the first half-shell 1.
- the coil connection pins 32a and 33a are guided close to the outside, where, according to FIG. 1 or FIG. 3, they can be angled downwards or, in a manner not shown, can also be bent in a horizontal plane to form SMT connections.
- the second half-shell 2 is obtained by overmolding the spring support 21 and the mating contact elements 22 and 23, a space being left free for the coil and for the movable armature contact spring unit.
- the mating contact elements each have a connecting pin 22a or 23a which is guided close to the outside, while in the interior a fixed contact section 32b or 33b is provided with a noble metal contact layer 32c or 33c.
- the contact material is plated as an inlay into the surface of the respective contact element, so that a covering is easily possible when encapsulated. Otherwise, other technologies for applying the contact material would also be conceivable.
- the two mating contact elements 22 and 23 of course, only one mating contact element could be provided to form an opener or a closer.
- the L-shaped contact spring 4 has a first spring leg 41, which extends in front of the coil, and a second spring leg 42, which extends laterally next to the coil below the armature and carries a movable contact 43.
- the first spring leg 41 is fastened to the spring support 21 via a fastening tab 44 which is angled upwards, via a welded connection 46 according to FIG. 4 or via a clamping claw 45 according to FIG. 8.
- the fastening height of the contact spring 4 on the spring carrier 21 is variable, as a result of which the position of the second spring leg 42 relative to the counter-contact elements can also be adjusted. In this way, the armature restoring force or the rest contact force can be influenced during the assembly process to compensate for tolerances.
- the contact spring Before the contact spring is fastened to the spring support 21, it is connected to the armature 5, which can be done in an electrically conductive manner, for example according to FIG. If insulation is to be achieved between the contact spring and the magnet system, the connection can be made through an insulating material sheath 52 according to FIG. 7. For certain applications, it is also possible to borrow the current to the contact spring via a wire. For example, higher control strengths can be routed to the contact point with low resistance via such a strand in order to avoid excessive heating of the spring.
- a peripheral wall 12 engages in a box shape over the lower housing part 2, which has an internally circumferential web 24 for this purpose.
- one of the housing parts also has a circumferential rib 25 which is deformed by means of ultrasound during the joining and which creates the tight connection between the two half-shells.
- FIG. 10 shows a variant of the relay from FIG. 1.
- the two half-shells 101 and 102 are not connected in a single joining plane, but rather with joining planes 103 and 104 which are stepped against one another.
- the internal structure of the relay is the same as in the previous example, except that a mating contact element, namely a make contact
- Mating contact plate 105 is injected with its connecting pin 105a into the first half shell with the magnet system.
- the distance between the mating contacts can be influenced when the two half-shells are joined.
- welding, rivet and inlay contacts can be provided on the mating contact elements using a slide-free injection mold.
- the construction of the relay also allows other embodiments of the connection geometry by using the relatively flat parts, so that the connections can be made on only one lay side can emerge from the housing.
- a first half-shell 110 carries the contact elements with connecting pins 111, 112 and 113 and a second half-shell 120 carries the magnet system with coil connecting pins 121 and 122.
- Such a relay requires only a small footprint for plugging or soldering.
- flat plugs could of course also be provided.
- the connection pins can of course also be designed as surface-mountable SMT connections.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnets (AREA)
- Manufacturing Of Electric Cables (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- General Factory Administration (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19627844A DE19627844C1 (de) | 1996-07-10 | 1996-07-10 | Elektromagnetisches Relais und Verfahren zu dessen Herstellung |
DE19627844 | 1996-07-10 | ||
PCT/DE1997/001230 WO1998001880A1 (de) | 1996-07-10 | 1997-06-17 | Elektromagnetisches relais und verfahren zu dessen herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0914665A1 true EP0914665A1 (de) | 1999-05-12 |
EP0914665B1 EP0914665B1 (de) | 2000-01-26 |
Family
ID=7799471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97931621A Expired - Lifetime EP0914665B1 (de) | 1996-07-10 | 1997-06-17 | Elektromagnetisches relais und verfahren zu dessen herstellung |
Country Status (7)
Country | Link |
---|---|
US (1) | US6252479B1 (de) |
EP (1) | EP0914665B1 (de) |
JP (1) | JP2000514235A (de) |
KR (1) | KR20000023651A (de) |
AT (1) | ATE189334T1 (de) |
DE (2) | DE19627844C1 (de) |
WO (1) | WO1998001880A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19820458C1 (de) * | 1998-05-07 | 1999-11-11 | Siemens Ag | Magnetsystem für ein elektromagnetisches Relais |
WO2000007203A1 (de) * | 1998-07-27 | 2000-02-10 | Siemens Aktiengesellschaft | Schaltgerät mit einem gehäuseunterteil als baueinheit und zugehöriges fertigungsverfahren |
DE10209810B4 (de) * | 2001-03-09 | 2006-11-16 | Omron Corporation | Relais |
GB0110948D0 (en) * | 2001-05-04 | 2001-06-27 | Tyco Electronics Amp Gmbh | Bus controlled relays |
JP4022440B2 (ja) * | 2002-07-01 | 2007-12-19 | 株式会社オートネットワーク技術研究所 | 回路ユニット |
KR101014987B1 (ko) * | 2002-11-15 | 2011-02-16 | 타이코 일렉트로닉스 에이엠피 게엠베하 | 릴레이용 압출 코팅한 자기 시스템 |
JP4673217B2 (ja) * | 2003-04-23 | 2011-04-20 | 由紀夫 佐藤 | メチル化CpGポリヌクレオチド |
DE102012003236A1 (de) | 2012-02-20 | 2013-08-22 | Clariant Produkte (Deutschland) Gmbh | Vorvergoldung von Pd-Au-gecoateten Schalenkatalysatoren |
CN110473743B (zh) * | 2019-04-25 | 2024-06-18 | 厦门宏发汽车电子有限公司 | 一种可保证衔铁或动簧片正常动作的继电器 |
EP4002414A1 (de) * | 2020-11-13 | 2022-05-25 | Tyco Electronics Austria GmbH | Elektrisches gerät mit einem abgedichteten gehäuse mit einem gehäuseunterteil und einem gehäuseoberteil |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1598789A (de) * | 1968-12-27 | 1970-07-06 | ||
BE786042A (fr) * | 1970-12-02 | 1973-01-10 | Int Standard Electric Corp | Equipement de contact multipolaire place sous enveloppe scellee |
DE2506626A1 (de) * | 1975-02-17 | 1976-08-26 | Hans Sauer | Mit einem gehaeuse abschliessbarer, aus isolierstoff bestehender kontakttraeger fuer schaltelemente |
DE2622133A1 (de) * | 1976-05-18 | 1977-12-08 | Siemens Ag | Elektrisches bauelement, insbesondere elektromagnetisches relais |
DE2723430C2 (de) * | 1977-05-24 | 1984-04-26 | Siemens AG, 1000 Berlin und 8000 München | Elektromagnetisches Relais |
EP0100165B1 (de) * | 1982-07-06 | 1988-12-28 | Nec Corporation | Elektromagnetisches Umschaltrelais |
US4827234A (en) | 1986-06-23 | 1989-05-02 | Siemens Aktiengesellschaft | Electromagnetic relay |
US4975666A (en) * | 1989-03-28 | 1990-12-04 | Matsushita Electric Works, Ltd. | Polarized electromagnetic relay |
EP0501951B1 (de) | 1989-11-16 | 1993-10-13 | Siemens Aktiengesellschaft | Elektromagnetisches relais |
EP0502842B1 (de) * | 1989-11-16 | 1993-10-13 | Siemens Aktiengesellschaft | Elektromagnetisches relais |
US5038123A (en) * | 1989-12-14 | 1991-08-06 | General Motors Corporation | Flat electromagnetic relay |
US5191306A (en) * | 1990-09-14 | 1993-03-02 | Matsushita Electric Works, Ltd. | Miniature electromagnetic assembly and relay with the miniature electromagnet assembly |
US5148136A (en) * | 1991-08-19 | 1992-09-15 | General Motors Corporation | Flat electromagnetic relay |
US5216396A (en) * | 1991-09-13 | 1993-06-01 | Eaton Corporation | Switching relay |
-
1996
- 1996-07-10 DE DE19627844A patent/DE19627844C1/de not_active Expired - Fee Related
-
1997
- 1997-06-17 DE DE59701074T patent/DE59701074D1/de not_active Expired - Lifetime
- 1997-06-17 AT AT97931621T patent/ATE189334T1/de not_active IP Right Cessation
- 1997-06-17 JP JP10504638A patent/JP2000514235A/ja active Pending
- 1997-06-17 WO PCT/DE1997/001230 patent/WO1998001880A1/de not_active Application Discontinuation
- 1997-06-17 EP EP97931621A patent/EP0914665B1/de not_active Expired - Lifetime
- 1997-06-17 US US09/214,731 patent/US6252479B1/en not_active Expired - Fee Related
-
1999
- 1999-01-08 KR KR1019997000104A patent/KR20000023651A/ko not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9801880A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2000514235A (ja) | 2000-10-24 |
DE19627844C1 (de) | 1997-08-28 |
EP0914665B1 (de) | 2000-01-26 |
ATE189334T1 (de) | 2000-02-15 |
KR20000023651A (ko) | 2000-04-25 |
DE59701074D1 (de) | 2000-03-02 |
US6252479B1 (en) | 2001-06-26 |
WO1998001880A1 (de) | 1998-01-15 |
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