DE2218493C3 - Armature bearing for relays - Google Patents

Description

The invention relates to an electromagnetic relay with one on a yoke edge mounted angle anchor, which by a double bent, engaging in a breakthrough of the anchor Leaf spring is held, this leaf spring is attached with its first portion on the yoke, with its middle section, which is bent into the yoke plane, on the one in alignment with the yoke edge The upper edge of a tooth that is bent out of the armature and protruding into a yoke incision rests and is bent out with its free end portion of the yoke plane.

Retaining springs for angle anchors are already known and used in many forms. For example, in the German utility model 18 05 215 describes an armature retaining spring from its attachment to the yoke is first passed through a recess in the anchor and then arched up to the bend of the Anchor runs. With this construction, however, the armature spring must first be inserted into the recess in the armature threaded and then screwed onto the yoke together with the anchor. So the assembly can only be done manually because of the complicated shape of the armature spring.

Also in the German Auslegeschrift 10 02 467 an angle anchor is shown, dei of one on the yoke attached metal leaf spring is held. Here, too, the spring extends through a recess in the Middle of the anchor. As far as it can be seen from the representation of the armature and the retaining spring, can also here the armature spring can only be screwed together with the armature on the yoke.

The Swiss patent 3 31 673 shows a relay, in which an asymmetrically provided armature with only one actuating leg is also asymmetrical trained and asymmetrically arranged retaining spring is pressed against the bearing edge. This construction requires a relatively large amount of space for the bearing spring and, moreover, cannot rely on ordinary, symmetrically designed anchors are transferred. Otherwise, the retaining spring shown there does not offer any Securing the anchor in the event of vibrations and impacts. A simple installation option of the anchor offers the aforementioned relay (US-PS 24 61 360). in which an anchor spring on a notched anchor tooth rests, the upper edge of which is in turn aligned with the cutting edge of the bearing. By the double turn ίο the armature spring is particularly easy to slide open and removal of the anchor. However, this also has the disadvantage that the While the armature is pressed into the bearing by the armature spring during normal operation, it does not counteract it stronger shock and shaking loads is secured. With a simple forward movement, the Armature to be separated from the yoke, so that it is already during transport of the relay or at all during use ίο can slip out of storage in a movable device and then no longer function.

Securing the anchor in the storage has already been proposed in a different context (French additional patent specification 74 062 to French patent specification 11 07 588). Lateral extensions are provided there on a holding member, which extend over the armature and secure it in the bearing. However, this holding element is designed as an additional part to the bearing spring and it is guided through an opening in the armature in such a way that the holding element must be unscrewed in each case for the assembly and disassembly of the armature. A similar securing of the anchor by laterally overlapping projections is described in the German utility model 19 06 ^ 20. Dc ^r t the lateral extensions are attached directly to the yoke, and this yoke must be bent again for the final securing of the armature. Apart from the fact that such an assembly is only possible with small yoke cross-sections, this anchor protection does not allow any replacement of the anchor under any circumstances.

The object of the invention is to provide an electromagnetic

To train relay with an armature bearing mentioned above so that the armature with little easy to manufacturing parts can be mechanized mounted, is easy to replace, but in operation against unintentional falling out of storage is secured. According to the invention, this is thereby achieved achieves that the bent-out armature tooth and the middle leaf spring section lying on it are narrower are as the anchor opening, and that provided at the free end portion of the leaf spring, the anchor opening Lateral extensions corresponding in width can be latched behind shoulders, which the

Anchor breakthrough on both sides of the anchor tooth

limit.

Due to the inventive design of the armature spring, the armature can be moved in a straight line mechanized to be placed on the yoke, whereby it is at the same time to prevent falling out. When attaching the armature, the leaf spring runs with its outwardly bent end on this tooth and is raised a little when the anchor is pushed in further. The lateral appendages at the end of the Leaf springs slide over the shoulders on either side of the anchor tooth and snap into place behind them. At the The armature is finally reached its end position by the inwardly curved middle part of the armature spring held in place, the bearing edge of the anchor

is pressed against the yoke edge.

In an advantageous embodiment of the invention is also provided that the leaf spring by a Rivet with a non-round cross-section on which it is fastened so that it cannot rotate. This ensures that the Bearing spring always in the middle on el ·, ι η anchor / ahn rests, and dali not on one side, for example one of the lateral extensions creates unwanted friction.

An embodiment of the invention is described in more detail below. It shows

F i g. 1 a magnet yoke and an armature in an assembly-friendly! ' Arrangement.

Fig. 2 shows a fully assembled relay armature, partially on average.

Fig. 1 shows a magnetic yoke 1 with a riveted, leaf spring 2 bent twice. This leaf spring 2 is; attached with one end so that its middle part 3 is bent towards the yoke and comes to rest in a cutout 4 of yoke I. The free end 5 of the In contrast, leaf spring 2 is again bent away from the yoke and is also provided with lateral extensions 6. The anchor leather is also secured against rotation by a rivet 7 with an oval cross-section.

The armature 8 is angled and has an opening 9 for introducing the armature spring 2. In addition, a tooth 10 is provided, which is in the Cutout 4 of the inch 1 fits and the anchor 8 leads laterally.

When assembling, the armature 8 can move in a straight line in the direction of the arrow II the yoke 1 can be pushed on. The free end 5 of the armature spring 2 pushes through the opening 9 and runs in the process against the tooth 10 and is thus partially lifted out of the hole cutout 4. The side Extensions 6 on the armature spring are lifted over the edges 12 of the armature 8 and lock into place finally behind the edges 13. By this locking, the anchor 8 is enduükig against impacts secured.

After the end of the Aufsteekbewegung the middle part 3 of the armature spring lies on the edge 14 of the tooth 10 and thereby presses the bearing edges 15 against the bearing cutting edges 16 of the yoke 1. The edge 14 of the tooth 10 and the bearing edge 15 of the bearing 8 are aligned in a line so that at the pressing position of the bearing spring 2 only there is very little friction.

Fig. 2 shows, partially in section, the fully assembled armature 8 on the yoke 1 with the magnet coil 17. The bearing spring 2 presses on the bent-out armature teeth 10 and thus holds it in its desired position on | och 1 fixed. An embossing 18 on the control bar! of the armature 8 finally serves as a stop for Limitation of armature movement when the magnet system is not excited.

By lifting the free end 5 of the armature spring 2, the armature 8 can also be used without damaging any parts can be easily withdrawn from yoke 1. This ensures that it is easy to change at any time.

1 sheet of drawings

Claims (2)

Patent claims: 1. Electromagnetic relay with an angle armature mounted on a yoke edge, which is held in place by a leaf spring that is bent twice and engages in an opening in the armature, this leaf spring is fastened with its first section on the yoke, with its in the yoke plane bent-in middle section on the upper edge of one from the, which is aligned with the yoke edge Anchor bent out and rests in a yoke protruding tooth, and with its free The end portion is bent out of the yoke plane, characterized in that the bent out Armature tooth (10) and the middle leaf field section (3) lying on it are narrower than the Anchor opening (9), and that provided at the free end portion (5) of the leaf spring (2), the Anchor breakthrough in width corresponding lateral extensions (6) behind shoulders (13) can be latched which limit the anchor breakthrough on both sides of the anchor tooth (10). 2. Electromagnetic relay according to claim 1, characterized in that the leaf spring (2) through a rivet (7) with a non-round cross-section is secured against rotation on the yoke (1).