DE8424457U1 - Socket for an electromagnetic relay - Google Patents

Abstract

1. Socket of an electromagnetic relay having connection elements (15) embedded in one plane in a flat insulant body (9), from which connection elements contact elements are bent up towards the top of the insulant body (9) and emerge at the top thereof, and from which connection elements connection tags are led outwards, characterized in that the connection tags (14 ; 17 ; 22) extend with their free ends (18 ; 21 ; 22) in a direction parallel to the bottom of the insulant body (9).

Description

Siemens Aktiengesellschaft Our symbol Berlin and Munich VPA ßi P 1 6 1 6 DE

Socket for an electromagnetic relay

The invention relates to a base for an electromagnetic Relays with connection elements embedded in one plane in a flat body of insulating material, which contact elements are bent up to the top of the insulating body and emerge at the top and from which connection lugs are led to the outside.

Such a relay socket is described in DE-OS 32 32 380, for example. There as with other known ones Relay, the connection brackets extend in the form of pins perpendicular to the connection plane of the relay, so that they can be in bores of a circuit board or in sleeve-shaped Recording elements of a plug socket can be inserted.

In the case of other components, such as resistors and the like, it is already common practice to use flat connection elements to be provided for contacting printed circuit boards

(e.g. DE-OS 31 04 623). With this so-called planar connection technique parts of the housing surface are used as connecting elements. This is jedoc.i each to components, such as resistors, which generally have only two connection elements. In the case of components with a larger number of contact connections, such as relays, this is known Type of using housing surfaces for contacting, not readily applicable.

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The object of the invention is to provide a base for an electromagnetic To create relays with flat contacts, the relay structure otherwise in a conventional manner can remain and the height is not increased by the flat contacts.

According to the invention, this object is achieved in a base of the type mentioned in that the connecting lugs with their free ends in one to the bottom of the

Insulating body run parallel direction. at

Relay sockets with terminal lugs exiting on the underside can move the latter parallel to this underside be bent on the outside, it is useful that the terminal lugs approximately in the middle third of the underside Exit surface of the base so that the free ends do not protrude over the edge. Kick the connecting flags in the vicinity of the outer edge of the base, they are expediently bent inwards. To the To keep the overall height as low as possible, recesses can be provided in the base base for the connecting lugs However, the depth is less than the material thickness of the terminal lugs. The latter measure ensures that that the connections rest on the conductor track of a circuit board in each case.

The base can also be designed so that the connection lugs emerge laterally in the embedding level. In an expedient embodiment, these are connecting lugs then bent down to the area of the underside of the sock. But it is also possible that the To let connecting lugs run with their free ends directly in the embedding plane. In this case must however, ensure that the circuit board in which the corresponding relay is to be mounted has a Has recess for the base body. Since when assembling components with surface contacts, the conductor

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plate is not passed through a solder bath or the surface-contacted Components that are only subsequently applied to the circuit board are recesses of this type also not harmful to the relay to be used afterwards.

The invention is explained in more detail below using exemplary embodiments. It shows

Fig. 1 shows a relay with a designed according to the invention Base in exploded view,

2 and 3 show two different base designs with flat contacts provided on the underside in the Cut,

Fig. 4 and Fig. 5 two base designs with laterally emerging connection lugs, also in section.

1 shows a relay with a base designed according to the invention, merely by way of example. The magnet system consists of a bobbin 1 with a winding 2 _; two yokes 4 and 5 to be pushed into the coil body with an intermediate permanent magnet 6, also an armature 7 and a contact slide 8. The detailed structure of the relay is described, for example, in DE-OS 32 32 380 mentioned.

The aforementioned magnet system is placed on a base 9 designed as an insulating body and covered with a cap 10 after assembly. Contact elements and possibly also coil connection elements are embedded in the base, these connection elements being cut free from a circuit board and injected in the plane of the circuit board in order to achieve the lowest possible overall height. The contact elements 11 and 12 and the contact spring carrier 13 are each made of the circuit board

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level bent upwards, while the associated connection lugs 14 in the example of FIG. 1 laterally or in other embodiments on the underside of the Emerge from the base. Contrary to the previous relay constructions, however, these connection flags are not in the form of Pins guided perpendicular to the bottom, but designed as flat contacts.

Fig. 2 shows in section the base 9 with in one plane

embedded connection elements 15, which in this embedding level are cut from a board. The individual connection elements are from the embedding level 15, the contact elements 11 and 12 already shown in FIG. 1 are bent upwards. In addition, there are connection lugs on the underside 17 bent perpendicular to the embedding plane, which emerge on the underside of the base 9 and along this underside is bent in a direction parallel to the connection plane to form flat contacts 18 are. In the example of FIG. 2, where the connection lugs 17 run close to the edge of the base, the flat contacts are 18 bent inwards so that they are completely below the base and do not reduce the width of the relay. bigger. With these flat contacts 18, the relay is placed on contact surfaces of a circuit board 19. The contacting takes place as with other components with surface contacts by heating the on the circuit board intended contact surface material.

FIG. 3 shows a base with a structure similar to that in FIG. 2. In contrast to this previous embodiment are here the terminal lugs 17 in the middle third of the base 9 led out downwards, with the flat contacts 18 are then bent outwards. In this case too, the flat contacts must be dimensioned accordingly 18 ensures that these do not protrude beyond the outer edge of the base 9 and thus reduce the width of the relay.

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could increase. Fig. 3 also shows the possibility of the flat contacts 18 in recesses 20 of the base to lay, whereby the height can be reduced. The depth of the recesses 20 is, however, in any case less than the thickness of the flat contacts 18. Corresponding recesses 20 could of course in the same way can also be provided in the embodiment of FIG. 2,

Fig. 4 shows another embodiment of a base 9, terminal lugs 14 as in FIG. 1 of the connection elements 15 emerge laterally from the base 9 in the embedding plane. These connection lugs are outside the base 14 bent downwards so that the flat contacts 21 at the level of the base underside on a circuit board 19 rest.

Another possible embodiment for flat contacting of a relay is shown in FIG. Here are the Connection elements 15 provided with flat contacts 22, welehe are designed as straight extensions of the embedded connection elements 15 in the embedding plane. For a relay with such a socket, a very low installation height can be achieved in the circuit board 19, when the circuit board 19 has a recess 23 the size of the base 9. When assembling the relay So the base 9 is placed in the recess 23, the laterally protruding flat contacts 22 on the conductor tracks or contact surfaces of the circuit board 19 come to rest.

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Claims (6)

- 6 - VPA 84 P 1 6 1 6 DE ■ fit claims 1. Socket for an electromagnetic relay rait in one Level connection elements embedded in a flat Isolierstoffkorper, from which contact elements to the top of the insulating body are bent up and emerge at its top and from which terminal lugs are guided outside, characterized in that the connecting lugs (14, 17, 22) with their free ends (18, 21, 22) extend in a direction parallel to the underside of the insulating body (9). 2. Socket according to claim 1, characterized in that the connecting tabs (17) in the middle Third of the underside surface of the insulating body (9) emerge and nit their free ends (18) extend parallel to the bottom to approximately the side edge of the base. 3. Base according to claim 1, characterized in that the connecting lugs (17> emerge in the edge region of the insulating body (9) on its underside and bent inwards with their free ends (18) are. 4. Socket according to claim 2 or 2, characterized in that the free ends (18) of the Terminal lugs on the underside of the insulating body (9) lie in recesses (20), the depth of which is less than the material thickness of the terminal lugs. 5. Socket according to claim 1, characterized in that the connecting lugs (14) in the Embedding plane emerge laterally from the insulating body (9), outside of the insulating body (9) are bent at the bottom and with their free ends it ·· i · t * • · ■ ··· · a · · ta • · ·· · »ι im ι · »t · tt · _ 7 - VPA 84 P ί 6 1 6 OE (21) extend outward in the area of the underside of the insulating body (9). 6. Base according to claim l, characterized in that that the connection lugs (22) in the embedding plane laterally out of the insulating body (9) exit and extend outward with their free ends in the same plane.