DE8129713U1 - Bistable clapper armature relay - Google Patents

Description

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Bistable clapper armature relay

The invention relates to a bistable hinged armature relay

with the features of the preamble of claim 1. It '

is essentially a polarized relay with _;

angular hinged armature and 2 stable switching states, with an electrical excitation winding and a permanent magnet to maintain the respective switching state, which in its structure largely has a correspondingly unpoled Relay matches.

Electromagnetic relay, with 2 stable switching positions are mainly used when, after excitation by a pulse, the position of the armature achieved with it also changes Termination of the impulse is to be retained until another impulse returns the original switch position restores.

Polarized relays have already become known which have a permanent magnet to maintain the two switching states own.

So z. B. in DE-PS 846 863 inserted a permanent magnet into the magnetic circuit, so that the 2-leg armature with one leg either over the yoke part short-circuits the magnet or in the other position with the other leg the magnetic circuit via the series connection Magnet-Joeh-Spuie closes. h In DE-AS 1198455 it is achieved by appropriate design of armature arms that the resistance resulting from the parallel connection of the two magnetic resistors is the same in both switching positions of the armature. . ; However, these relays are no longer comparable in construction with a non-polarized i relay. _ |

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The object of the invention is to eliminate the deficiencies mentioned and to create a polarized relay that largely consists of parts of the corresponding non-polarized relay exists, also has short iron paths with low scattering losses.

This problem is solved by the features of the characterizing part of claim 1.

The proposed arrangement leads to the formation of two permanent magnets Circles, once the main circle, which has an anchor plate, the yoke, the permanent magnet, a fitting piece and the upper part of the core and takes effect when the armature is tightened and a secondary circle that consists of the Permanent magnets, the yoke, the core and the fitting piece.

The secondary circuit is magnetically disabled when the main circuit is active and is only activated when the armature has dropped out Immersion of an armature pin in the magnetic field within a yoke recess is stronger than that through a working air gap weakened magnetic field of the main circuit.

Further advantageous properties of the subject of the invention are:

The possibility of control in the event of excitation or de-excitation due to pulses of the same size, which are of opposite polarity for a single coil than for a conventional one Double coil, however, must be of the same polarity. The relay is also insensitive to overexcitation. For this reason there is therefore no influence on the desired switching function on the relay in the event of a Overexcitation instead.

In addition, offers the angled anchor pin in cooperation with the insulating part on the anchor as well as with a Actuator for the switching spring and the bias of the switching spring itself, the possibility of a contact lag to connect constructively with the rest position of the relay.

Details of the invention are at a preferred one. Embodiment explained in more detail with reference to the drawings. Show it:

Fig. 1 shows a section through the relay with the armature tightened in the working position and

Fig. 2 shows a section with the armature dropped in the rest position of the relay.

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The relay is conventionally like a polarized one Relay constructed and consists of a permanent magnet 1, a fitting piece 2, both parts by one single permanent magnet can be replaced, a hinged armature 3, consisting of anchor pin 4, anchor plate 6 and Insulating part 5. Further components form the yoke 10 with the yoke recess 11 on the rolling edge 17 of a cutting edge bearing, the core 7, with the upper part 7 a and core reduction 8, furthermore the contact carrier 20, the switching spring 15, the switching contacts 21, 23, 24 and the actuating member 14 for the switching spring 15.

Contact set and the magnetic circuit parts as well as coil 9 and coil body 22 are in the usual way on a base plate 16 mounted.

The difference to a correspondingly non-polarized relay lies only in the change in the shape of the armature through the anchor pin 4, and the yoke 10 through the yoke recess 11 and the core reduction 8. In addition, the permanent magnet 1 is required and possibly a fitting piece Neither the contact set itself nor the installation dimensions have changed.

In the rest position (Fig. 2) the permanent magnet Secondary circuit closed, whereby the resulting tightening force of the anchor pin dipping into the secondary circuit 4 the force effect of the air gap induction in the working air gap 12 of the permanent magnetic main circuit will be annulled.

Eir.e stable and defined position of the armature 3 is here achieved by the intended contact of the insulating part 5 on the yoke 10, whereby the secondary air gap 13 forms between permanent magnet 1 and anchor pin 4.

Due to the structural arrangement of his game 18 between the actuator 14 and the switching spring 15 in the rest position of the relay is the required contact lag between the switch contacts 23, 24 taken into account.

In order to get from the rest position (Fig. 2) into the working position (Fig. 1), the relay is energized in such a way that the electromagnetic flux is superimposed on the permanent magnetic flux. This results in a force that the anchor plate 6 attracts. The magnetic resistance in the main circuit is thereby considerably reduced and is to the magnetic resistance in the secondary circuit is much smaller.

After the coil excitation is removed, the armature plate 6 will automatically adhere because the permanent magnet Main circle is effective. This holding force can constructively through the magnetic resistance in the secondary circuit z. B. be influenced by the core reduction 8.

In order to return to the rest position (Fig. 2), the permanent magnetic field is opposed to it The field of the excitation coil 9 superimposed; The secondary circuit that becomes effective is thereby activated by the restoring force the switching spring 15 supports.

Claims (2)

G 81 29 713.0 EBEBLE AMLAGENKS claims 1. Bistable hinged armature relay with a permanent magnet through which Force effect a main magnetic circuit and a secondary magnetic circuit are functionally effective separately, with the holding force for the armature in the main circuit can be determined and to initiate the switching process or the closing process of the armature the existing permanent magnetic field is superimposed by an electromagnetic field, characterized in that the magnetic Secondary circuit, which consists of the permanent magnet (1) and the Rivers, namely the adapter (2) the core (7, 7a) with core reduction (8) and the yoke (10) exists, caused by the immersion of the anchor pin (4) by the rotary movement of the hinged armature (3), into the yoke recess (11) and thus into the aforementioned magnetic secondary circuit the resulting force effect cancels that of the air gap induction in the working air gap (12) of the main circuit, which from the permanent magnet (1) and the flux pieces, namely the adapter (2)
the core part (7a)
the anchor plate (6) and
the yoke (10) consists. 2. hinged armature relay according to claim 1, characterized in that the rotation of the pin (4) around the rolling edge (17) on the armature (3) attached insulating piece (5) to rest on the yoke (10) and thereby in a stable and A defined rest position comes, which has no effect on the actuating element (14) and on the switching spring (15), since a predetermined play (18) is established on the actuating member (14) of the switching spring (15), the restoring force of the switching spring (15) is designed such that when the actuating member (14) is relieved, the contact pressure required at the switching contacts (23, 24) is not undershot and the clearance (18) simultaneously ensures the contact lag.