DE1191042B - Electromagnetic relay - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

HOIh

German class: 21g -4/01

Number: 1191042

File number: S 73209 VIII c / 21 g

Filing date: March 29, 1961

Opening day: April 15, 1965

The invention relates to an electromagnetic relay whose magnetizing winding load-bearing core is inseparably inserted in a carrier that is electrically insulated from the core and its the support penetrating free core end together with an opposing part of a magnetizable Armature forms a contact of the relay. In a known arrangement of this type is the Carrier for the core carrying the magnetization winding is designed as an annular sleeve, whereby before Especially when inserting several cores in the carrier, complex measures are necessary to the Align relay parts in the correct position to each other. Also there is a disadvantage in creating a defined contact surface for the magnetization winding a second annular sleeve is present, which a gastight connection to the core extremely difficult and in itself also the manufacturing costs of the Relay enlarged disadvantageously. Furthermore, special flux return parts are also included in the known arrangement required, which permit the construction of the relay in a complex manner and make it more expensive. Other disadvantages are also present insofar as the known arrangement on the one hand is not at all for a gastight enclosure, at least its contact device, and on the other hand only little for an automatic Manufacturing is suitable. On the other hand, the present invention aims to provide one simple individual parts existing relay, which avoids the disadvantages of the known arrangement thanks to a simple structure that makes the relay particularly suitable for automatic production makes suitable, distinguishes.

This is achieved by the fact that according to the invention the carrier as one for receiving at least a preferably pin-like and perpendicular to the support plane core suitable plate with im substantially rectangular cross-section is formed, whose surface facing the armature is a reference plane a reference plane for the construction of all the relay parts forming the contact side and their surface facing the magnetization winding forms the structure of the magnetizing winding, a flux return and relay mounting parts, and that furthermore the armature is constructed and arranged such that it, in addition to that with it contact-making core also part of the plate surface facing it as a magnetic Active flow leading part is directly opposite.

The individual parts used to build the relay are easy to manufacture components, and the summary the individual parts make the relay into electromagnetic relay

Applicant:

Siemens & Halske Aktiengesellschaft,
Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Named as inventor:
Dipl.-Ing. Rudolf Nitsch,
Korbinian Karrer, Munich

particularly suitable for the intended purpose. The connection between the plate and at least one core can therefore be used particularly advantageously in an automatic production process because precise reference surfaces are available in the plate surfaces to which thus the mutual position of the components can be related with great accuracy. That also applies to the electrically conductive anchor, due to its exact position to the core and to the plate at the same time the The required contact spacing can be correctly set in an automatic production process.

The anchor is expediently as a flat component

educated. In a manner which is particularly advantageous for fixing the anchor, it is arranged lying essentially parallel to the plate. A compact design for the relay is achieved at the same time.
In the case of an armature lying essentially parallel to the plate, the core inserted into the plate is advantageously inserted into the plate in such a way that it does not or only slightly protrudes from the plate on the side on which the relay armature lies, which reduces the compact structure of the relay further supported.

The plate can be made of insulating material, for example ceramic. However, it is particularly advantageous especially for the manufacture of the relay to use a metal plate. Such a record acts it is a very robust component that has a relatively high Can be subjected to stress without losing the exact dimensional accuracy, and its in the

509 539/273

3 4

Surfaces available reference surfaces, the cover can be detachably connected to the plate

for the construction of the relay with the greatest possible accuracy. However, a fixed connection is advantageous

can be set. chosen between lid and plate, which can be

For the definition of the cores in the plate matic production can produce plug-shaped bodies made of glass or materials 5 without difficulty, for example so that similar properties are used in a metal. The plate a metal cover with the plate ver cores can then be welded or soldered with advantage in the so-called.

Druckglaseinschmelztechnik are attached. The connection of the lid to the plate is made

The connection between the plate and the cores can thus advantageously be made hermetically sealed, so that the

can be made gas-tight in a simple way, what xo anchor in an evacuated or with a

For a more extensive structure of the relay, inert gas-filled space can be accommodated

as explained in more detail later, has an advantageous effect. At can. Such a hermetically sealed connection can

The use of a metal plate has been mentioned by welding or soldering the cover

Establishing also the advantage of a flawless and realizing plate without any effort. On the lid

electrical isolation between cores and plate. 15 suction nozzles can then be pre-

Furthermore, the meltdowns can be seen with the help of those used to evacuate and fill the

plug-shaped bodies made of glass or materials enclosed space with protective gas used

similar properties very robust. That affects and then can be sealed. The cores

In particular, in the event of a possible load, such a relay must of course be gas-tight

The assembly of the assembled components can be automatically passed through the plate.

production processes are very advantageous. The cover can be encircled with a flange-like

It should be mentioned at this point that it should be provided with the approach with which it is known, the cores of an electromagnetic relay rests in the edge zone of the plate. Define such a training pressure glass seal. When the cover is used, in particular for a known arrangement, cores 35 are used for welding the cover and plate in a sleeve, but also for using this technology . In this sleeve, soldering these two components together, it is a component that only adheres because the two components with relatively large surfaces produced in a much more complex process are securely on top of one another. It can be expediently used as one in the present case, in particular with regard to an in-one disk. Furthermore, this sleeve does not offer the connection between the cover and the plate , which is provided by the plate, which is provided by the automatic working process. Guides on the guides for the assembly of the relay. In the known relay, two components are provided, which continue to define their position to be extensive, controlled by the armature. In a simple manner, a contact device can be arranged, which realize such a large guidance that the space required for the relay. 35 plate in its edge zone with a circumferential

When defining the cores in the plate with a recess is provided in which the lid with his

The help of plug-shaped bodies made of glass or edge zone, for example with the flange mentioned,

Materials with similar properties are applied.

Cores expediently made widened at the core end that is inserted into the plate and cooperates with the anchor. It is thereby the 4 ° surface is formed advantageously crowned. Production is simplified in this way. In the case of the melt-downs of the specified type, which is essentially flat, ring-shaped body anchors are pushed onto the cores regardless of their angular position to the glass and encompass a practically constant core with this electrically located in the one in the opening in the plate. forms a well-defined contact surface without affecting the area. The connection between the components is then produced by heating . The comparison would have to be taken.

widening ensures an exact position of the ring-shaped on the side of the plate facing away from the anchor

Glass parts on the core and on the other hand has the advantage that at least one is on the exposed part

that no glass in the liquid state on the free core for at least one magnetization winding

The relay is placed on the core end or the surface 50 surrounding it. This arrangement of the wick

the plate can run and thus contamination enables a very simple assembly of the

gene that would have to be removed later, relay with the winding that without difficulty

especially because the free end of the core is also produced together in an automatic work process.

men forms a contact of the relay with the armature. leads can be.

For a long time now, the conveyance has been more and more established, so that "the armature, in particular, these are magnetically connected by a yoke plate parallel to the plate - if it is used as an electrical conductor at the same time. These is yoke can plate housed in a closed space be provided with holes, into which to. such a closed space may be the cores engage, wherein for an electric Isosich now in the present relay very simple 60 of the parts-regulation up to today concern supported thereby provide that a lid must be put on the plate.

is set, which together with the plate can be In a very simple embodiment

imagined space for the anchor closes. It can only relay a single into a metal one

the plate for example with raised edges to build the plate inserted core, with the anchor

be provided on which a flat cover 65 makes contact between the plate and the core.

is set. However, in an equally simple embodiment, the plate is expedient

can be designed to be completely flat and the lid is used with a metal lid

place the curved edges on the plate . The he anchor between the lid and the single core,

which is inserted into the plate make contact. A relay constructed as just described can be run once with a very small space requirement, since no separate contact devices more are required. When the relay is designed with a hermetically sealed space a great advantage for the anchor is achieved in that the enclosed space is only one Implementation, namely the one for one core, and thus the number of places where a leak could occur is reduced to the lowest possible number.

The anchor is expediently supported by a spring. In the case of the last two simple ones Embodiments of the relay can be an electrically conductive connection between the armature and produce the plate or the cover in a simple manner by this spring, which is electrically conductive is connected to the plate or the cover, for example by the fact that the spring on the cover or the plate is welded.

If there is only a single core inserted into a metal plate, there is a contact between the plate and the inserted core should be carried out by the anchor, this can also be done that the anchor the core and the plate in its tightened position by touching both components connects directly with each other. An electrical connection between the anchor and the plate can can of course also be made additionally by the armature spring. If the anchor dies Plate and the core connects directly, these components are expediently arranged to each other that the core surface cooperating with the anchor with the surrounding plate surface in one Level lies. This not only has advantages in the context discussed, but also in terms of it the manufacture of the relay, namely the connection between the core and the plate. The one mentioned The position of the core in the plate can be determined using a flat stop against which the plate surface and the core come to rest in an automatic operation without difficulty carry out.

To achieve a double contact and thus to improve contact, the Anchor formed from two independent adjacent parts, which are preferably are attached to lugs of a spring. To an exact determination of the rest position of the anchor expediently a protruding into the closed space approach provided on the cover, on which the anchor strikes in its rest position. The retaining spring of the armature can for example be attached to such a cover be welded on.

A relay equipped with such a cover should now have the special advantages the relay according to the invention in a special measure for automatic production make suitable, are briefly explained. In the plate surface on which the lid rests, an exact reference area is available. When the armature spring is welded to the cover, it lays down the anchor to the mentioned approach of the lid. The spring can be completely flat, i.e. H. without preload, be used. So there are two components to be connected to each other, on the one hand the plate with the inserted core, whose surface cooperating with the anchor has an exact relative position has to the plate surface, for example lies in a plane with this, and on the other hand the Lid with the anchor that he carried. When these two components are joined together, depends on the most important size of the relay, the core-armature distance, which is also the contact distance here, only from a single dimension, namely the distance of the lying parallel to the plate

ίο the cover part from the plate. This measure can be now, for example, with a design of the lid with bent edges that sit on the plate, comply with great accuracy. When the two components mentioned are connected The distance between the core and the armature is thus easily achieved with the required great accuracy set.

The approach of the cover can be designed in a simple manner as an impression of the same, their Depth can be kept according to a predetermined level with the greatest accuracy. The approach can, however, also be passed through the cover, preferably in a gas-tight manner be formed electrically conductive pin, which offers the possibility of this pin together with the anchor to be used as a normally closed contact for the relay. But you can also use the pen magnetically make conductive material and use a lid made of non-magnetic material, for example brass. There is again the possibility of arranging a normally closed contact and, moreover, the advantage that the anchor, when on the mentioned pin, at least one Winding is placed, can also be controlled via this further winding.

When building a relay with only one core inserted into the plate, the ratios improve the flux guidance in that, parallel to the part carrying the excitation winding running of the core, at least one Flußleitstück is arranged, which is parallel to the plate by a running perforated plate is magnetically connected to the core. The flux guide piece and the yoke plate can be made in one piece, for example also in Form of a pot surrounding the excitation winding.

It was already mentioned above that a yoke plate running parallel to the plate with Perforations can be provided, which is pierced by the cores. Advantageously, they protrude free core ends through recesses in the yoke plate so that they act as contact connections can be used. You can use the relay for example by inserting it into the holes in a Bring printed circuit board with the circuit carried by this in connection and through Solder the core ends to the circuit at the same time fix the relay in the board. The crowded one Structure of the relay, which is thus very light, leaves such a holder to be completely sufficient and thus eliminates the need for your own fasteners, which are normally provided on a relay.

In the following the invention is based on the embodiments shown in the drawing explained in more detail. It shows

F i g. 1 in section the relay with only one core inserted into a plate and one on the plate

attached lid that closes a space for the anchor,

Fig. 2 is an interior view of the lid,

3 shows in section a relay constructed essentially according to FIG. 1 with a pin guided through the cover as a stop for the armature,

F i g. 4 a section of a relay built with two cores.

In the arrangement according to FIG. 1, a core 2 is inserted in a gas-tight manner into a metal plate 1 with the aid of a plug-shaped body 3 made of glass or similar materials. The core is inserted into the plate in such a way that its upper end 4 lies in one plane with the upper surface of the plate. He mentioned end 4 of the core is convex . A cover 10 , which is equipped with a flange-like extension 11 located on the bent edge of the cover, is placed on the plate. With this flange U, the cover rests in a recess provided on the top of the plate at its edge zone. The exact position of the cover on the plate is determined by the flange 11 and this recess. The cover is made of metal and is hermetically welded to the plate.

The armature assigned to the relay is marked with 13 be. It is mounted on the last-mentioned component via a spring 12 which is welded on the one hand to the armature and on the other hand to the cover. In the rest position shown, the armature rests on an indentation 14 of the cover, which is located above the core 2.

An excitation winding 6 is placed on the core 2. Following the coil, a yoke plate 7 is placed on the core, which is pierced by the core in a perforation. Running parallel to the core ver between the yoke plate 7 and the plate 1, a flux guide piece 8 is arranged.

When the winding 6 is energized, the armature 13 is attracted to the core 2 and it comes to rest on its convex surface 4 . A circuit connected on the one hand to the core and on the other hand to the plate 1 or cover 10 of the relay is thus closed, since the armature is electrically conductively connected to the metallic cover via the spring 12. With an appropriate design of the relay, the armature is brought to rest not only on the surface 4 of the core, but also on the surface 5 of the plate , so that, in addition to the spring, an electrical connection between the plate and the core directly via the electrically conductive Anchor 13 is made. When switching off the He excitation, the armature is returned to the rest position shown by the spring 12.

The surface of the armature cooperating with the core and the corresponding core surface can be covered with a contact material made of noble metal, for example made of silver . The same applies to the surface 5 of the plate 1 and the anchor surface that may cooperate with it. The free end of the core 2 is inserted into a hole in an insulating plate 15 which carries a printed conductor 16. By soldering the core to the conductor, for example using the wave soldering method , an electrically conductive connection is established between the core and the conductor. This connection also takes over the hold of the relay in the plate 15.

The inside view of the cover shown in FIG. 2 shows that the armature 13 is made up of two mutually independent, adjacent parts which are welded to the shoulders 17 and 18 of the armature spring 12. As already mentioned, the spring 12 is welded to the cover.

In the embodiment according to FIG. 3 are those with the exemplary embodiment according to FIG. 1 matching Parts of the relay shown there

ίο the in F i g. 1 provided reference numerals used. In the relay, a cover 35 made of non-magnetic metal is used, through which above the A magnetically conductive pin 9 is passed through the core 22 in a gas-tight manner, for example soldered in is. In the rest position shown, the anchor rests on this pin 9. There is a winding 20 on the pin put on. The armature 13 can thus not only be controlled via the winding 6 but also via the winding 20 will.

ao The core 22 is at its upper, in the plate 36 inserted end provided with a flange-like widening 19, which, as in the preceding already mentioned, serves as a stop for the plug-shaped body 3 and prevents parts of the pf ropf eniform Body made of glass during the melting process through the space between the core 22 and plate 36 emerge therethrough.

The in Fig. 4 relay shown in section is equipped with two cores 23 and 24 with the help a plug-shaped body 34 made of glass inserted gas-tight into a recess of a plate made of metal are. On the core 24 is an armature which simultaneously serves as an electrical conductor via a spring 25 26 stored. On the plate 21, a cover 27 is placed, which has an indentation 28 on which the anchor strikes in its rest position shown. The cover 17 made of metal is with the Plate 21 hermetically sealed. An excitation winding 29 is placed on the core 23. in the The cores 23 and 24 are connected to the winding by a yoke plate 30 magnetically with one another tied together. The cores pierce this yoke plate in appropriately arranged holes. the free ends of the cores are inserted into recesses of an insulating plate 31, which are printed with Conductors 32 and 33 is provided with which the free core ends can be soldered.

Claims (33)

Patent claims: 1. Electromagnetic relay, whose core, which carries the magnetization winding, cannot be released is inserted in a carrier electrically insulated from the core and its carrier penetrating free core end together with an opposing part of a magnetizable Armature forms a contact of the relay, characterized in that the carrier as one for receiving at least one preferably pin-like core (2, 22, 23) which is perpendicular to the carrier plane and is suitable Plate (1, 21, 36) is formed with a substantially rectangular cross-section, the dem Anchor (13,26) facing surface (5) a reference plane for the structure of all the contact side forming relay parts (4, 10, 12, 13, 19, 23, 24, 26, 27, 35) and their magnetization winding ment (6, 29) facing surface is a reference plane for the structure of the magnetization winding (6, 29), a river return (7, 8, 24, 30) and relay mounting parts, and that further the armature (13, 26) is so formed and it is arranged that in addition to the core (2, 22, 23) making contact with it, it also has one Part (5) of the plate surface facing it as a part guiding the active magnetic flux directly facing. 2. Electromagnetic relay according to claim 1, characterized in that the armature (13,26) is designed as a flat component. 3. Electromagnetic relay according to claim 2, characterized in that the armature (13, 26) is arranged lying essentially parallel to the plate (1, 36, 21). 4. Electromagnetic relay according to claims 1 and 3, characterized in that the core (2, 22) on the side of the plate (1, 36), ao on which the armature (13) of the relay is located, or not only a little protruding from the plate is inserted into it. 5. Electromagnetic relay according to claim 1, characterized in that the plate ag (1, 36, 21) is a metal plate. 6. Electromagnetic relay according to claim 1 or 5, characterized in that the core (2, 22, 23, 24) in the plate (1, 36, 21) with the help of plug-shaped bodies (3, 34) made of glass or materials with similar properties, preferably using pressure glass melting technology, is attached. 7. Electromagnetic relay according to claim 6, characterized in that the core (22) has a flange-like widening (19) at its end inserted into the plate (36). 8. Electromagnetic relay according to claim 1, characterized in that by a cover (10, 35, 27) placed on the plate (1, 36, 21), a closed space for the anchor (13, 26) is formed. 9. Electromagnetic relay according to claim 8, characterized in that the cover (10,35,27) is firmly connected to the plate (1, 36, 21). 10. Electromagnetic relay according to claims 1 and 8, characterized in that the lid (10, 35, 27) hermetically sealed with the plate (1, 36, 21), in which at least one core (2, 22, 23, 24) is inserted hermetically sealed, is connected. 11. Electromagnetic relay according to claims 5 and 10, characterized in that the cover (10, 35, 27) consists of metal and is welded or soldered to the plate (1, 36, 21) is. 12. Electromagnetic relay according to one or more of claims 8 to 11, characterized characterized in that the cover (10) rests with one on the edge zone of the plate (1) is provided flange-like circumferential approach (11). 13. Electromagnetic relay according to one or more of claims 8 to 12, characterized characterized in that the plate (1) and the cover (10) with the mutual position of the components defining guides are provided. 14. Electromagnetic relay according to claim 13, characterized in that the Plate (1) has a circumferential recess in its edge zone, in which the cover (10) with its edge zone (11) is applied. 15. Electromagnetic relay according to claim 1, characterized in that the with the core surface (4) cooperating with the armature (13) is convex. 16. Electromagnetic relay according to claim 1, characterized in that on the dem Anchor side of the plate facing away from the exposed part of at least one core (2, 22, 23) carries at least one magnetization winding (6, 29). 17. Electromagnetic relay according to claims 1 and 16, characterized in that in the case of several cores (23,24) inserted into the plate (21), these cores parallel to the Plate (21) extending yoke plate (30) are magnetically connected. 18. Electromagnetic relay according to one or more of claims 1 to 16, characterized characterized in that when only one is inserted into a metallic plate (1, 36) magnetically and electrically conductive core (2, 22) of the armature (13) between the plate (1, 36) and the core (2, 22) makes contact. 19. Electromagnetic relay according to one or more of claims 1 to 16, characterized characterized in that when only one is inserted into the plate (1, 36) magnetically and electrically conductive core (2, 22) of the armature (13) between an existing metal, placed on the plate Lid (10, 35) and the core (2, 22) makes contact. 20. Electromagnetic relay according to one or more of the preceding claims, characterized in that the armature (13, 26) is mounted via a spring (12, 25). 21. Electromagnetic relay according to claims 18 or 19 and 20, characterized in that that through the spring (12) the armature (13) is electrically conductive with the plate or the cover (10, 35) is connected. 22. Electromagnetic relay according to claim 1, 18 or 19, characterized in that that with the armature (13) cooperating core surface (4) with the plate surface in one Level lies. 23. Electromagnetic relay according to claim 21, characterized in that the spring (12) is welded to the cover (10, 35) or to the plate. 24. Electromagnetic relay according to claims 1 and 20, characterized in that the armature (13) is formed from two mutually independent adjacent parts is, which are preferably attached to lugs (17,18) of a spring (12). 25. Electromagnetic relay according to one or more of the preceding claims, characterized in that the cover (10, 35, 27) has a protruding into the closed space Approach (14, 9, 28) has on which the armature (13, 26) strikes in its rest position. 26. Electromagnetic relay according to claim 24, characterized in that the 509 539/273 set as an impression (14, 28) of the cover (10, 27) is formed. 27. Electromagnetic relay according to claim 25, characterized in that the set is formed by an electrically conductive pin which is preferably passed through the cover in a gas-tight manner. 28. Electromagnetic relay according to claim 27, characterized in that the pin (9) consists of magnetically conductive material and the cover (35) is made of magnetic material (eg brass) . 29. Electromagnetic relay according to claim 28, characterized in that at least one winding (20) is placed on the pin (9) . 30. Electromagnetic relay according to claims 1 and 18 or 19, characterized in that at least one flux guide piece (8) is arranged parallel to the part of the core (2, 22) carrying the field winding, through a yoke plate (7) running parallel to the plate (1, 36) magnetically with the core (2, 22) is connected. 31. Electromagnetic relay according to claim 30, characterized in that the Flußleitstück is formed integrally with the yoke plate. 32. Electromagnetic relay according to claims 1 and 17 or 30, characterized in that that the free core ends protrude through recesses in the yoke plate (7,30) so that they can be used as contact terminals. 33. Electromagnetic relay according to one or more of the preceding claims, characterized in that the armature of the relay is on a core inserted into the plate is stored. Considered publications:
U.S. Patent No. 2933 571. 1 sheet of drawings 509 539/273 4.65 ® Bundesdruckerei Berlin