DE3048432A1 - Bistable armature switching electromagnetic relay - has sensing finger tracking double V channel in armature top for displacement switching - Google Patents

Abstract

The miniature single coil control electromagnetic device has a bistable action on the armature. The unit is used for changeover control applications in model railway systems, i.e. locomotive direction etc., and has a double V loaded channel structure for the driven sensing finger (6) associated with the electromagnet armature (10) movement to follow. The sides of the double V are parallel channels (4,5) for the three dimensional spring supported finger (6) to follow. The unit comprises a coil winding (9) with metal armature (10) with an insulating end (1) channelled on the top with the double V structure so that the sensing finger can guide it and move the contact (12) around a base electrical switch formation (15).

Description

Relays for electrically operated toys.

The invention relates to a single-coil electromagnetic relay for toys, preferably for Spielseug rail vehicles. What is invented is marked in that the feeler finger of its anchor has a three-dimensional, by means of an annular Balin-guided and bistable control by means of steps (forced ring guidance) having.

The inventive advantage of such a bistable impulse relay lies above all in the fact that it is simple in structure and very small in size can. This saves space in model railroad vehicles that is used for other components, z.3. electronic circuits, is available.

The drawing reveals an embodiment more or less schematically, namely by means of FIG. 1 as a vertical longitudinal section and FIGS. 2 and 3 as horizontal sections (in one and the other end position illustrates the link body by means of a vertical longitudinal section, the Fig 5 by means of a plan view, FIG. 6 by means of a vertical cross section and the 7 by means of a floor plan (see FIG. 5).

The relay is used to switch between motor and other circuits, E.g. in locomotives of toy trains and model railways O E8 consists of the Bobbin 8 with magnet winding 9, the metal armature 10, a plastic molded part with link guide, a slightly pretensioned compression spring 11, the Pormfeder ls hook-shaped, pre-tensioned flexible rod spring 6, 7, one or more contact leaves, Springs, rivets, etc. (12) and one or more circuit boards 15.

In a model locomotive, the task of the spring is to move the anchor 10 to press with the plastic molding 3 to the outside. The magnetic force of the winding 6 is not sufficient with normal tension to insert the armature against the spring force Pull inside the coil. Only in the event of an overvoltage surge of e.g. 24 V. the anchor is tightened.

The Pormfeder 5 has the task of the plastic molded part connected to the armature 10 1 with guide in to hold one of the two end positions. the Ifakenf eder 6, 7 is made by a corresponding design of the link guide 2, 3, 4, 5 positively driven. This is achieved through gradients and locking holes in the Scenery tour.

For example, if the spring is at point P, it slides when it is tightened of the anchor to the right over an inclined plane (see. Fig. 4) to the upper right Corner of the link guide, falls into a locking hole there and holds the link body 1 with anchor firmly. Only when there is no longer any overvoltage at the solenoid and the armature is pushed outwards again by the spring 11, the end slides the shaped spring again over an inclined plane into the locking hole Q.

At the next surge voltage will. the armature 10, 1 tightened again, the shaped spring slides over an inclined plane into the locking hole on the top left End of the link guide, holds the armature until the overvoltage drops and slides then over the next inclined plane back into the Rabtlo ¢ h P. This is how the anchor with the plastic molding and the contact mushrooms 12 attached thereto alternately held in one of the two end positions.

Via the contact mushrooms 12 and the circuit board 15, it is possible to create different Circuit reversals or

To perform stop operations.

The cam track 2, 3, 4, 5 in the link body 1 as an anchor for the electromagnetic coil 7 is double-V-shaped, so that the legs 2, 3 of the two V through to the plane of symmetry E parallel channels 4, 5 are connected. The tactile finger 6, 7 is three-dimensional spring loaded. The two V 2, 3 are equally angled. The bottom of one V runs roughly in the same plane as the bottom of the other's basic mid-position V-shaped scenes with inclined surfaces with the same adjustment and return paths (see Fig. 4).

As a printed circuit board, part 15 is also the power supply plate of the relay. The hook spring 6, 7 is rooted in a flange of the bobbin 8 (see FIG. 1).

Fig. 7 illustrates what has been invented kinematically: With a short Current impulse it is possible for the sensing finger 6 to move from the stable state P (basic position I) to get into the stable state Q (basic position II).

From there in the ring (counterclockwise) of the button 6 back to the basic position 1. This is also done by means of a short second current impulse.

Necessary for puncturing the single-coil single-anchor pulling mechanism 9, 10 (DruckSeder pushing mechanism) is therefore the slightly pretensioned compression spring 11. Furthermore, the steering surfaces (? currency surfaces) D, E, X, G of the four steps at the ends of the four inclined lanes W, X, Y, Z necessary.

The compression spring 11 is so weak that it prevents the movement of the Component 1, 10 is practically not delayed or only brakes insignificantly if that Component 1, 10 by the electromagnetic force from the position of FIGS. 1 and 2 into the Basic position I (Fig 3) is thrown.

On the other hand, the compression spring 11 is eo strong that it is switched off the coil 9 push the component 1, 10 back into the position of FIGS. 1 and 2 and thus switching from the basic position I (Fig. 3) to the basic position II (Fig 1 and 2).

The mode of operation (with special attention to FIG. 7) s the The circuit board 15 is located under the backdrop prism 1. The sensing finger 6 is at a standstill at point P The electromagnet 9, 10 acts as soon as the circuit of the coil 9 is closed will. The feeler finger 6 slides when the component 1, 10 moves in the direction e 1) in the groove 4 upwards in direction a, then falls one step down to point R and remains there as long as the coil 9 is live.

After switching off the voltage, the compression spring 11 pushes the slide 1, 10 outwards and the sensing finger 6 slides, deflected away from the steering surface E, in the groove 2 upwards and falls over the step F down to the point Q. The mushroom 12 is moved onto the contact plate 13, whereby a not indicated to be switched external circuit has been closed. A circuit has thus been completed.

When reversing the switching, the link body moves as soon as the coil 9 gets voltage, again in direction e. The groove 3 directs the tactile finger 6 in direction b until it falls to point S over step G. As soon the coil 9 is de-energized, the spring 11 pushes the component 1, 10 against it again the Correctly e outwards, with the sensing finger 6 in the groove 5 is guided over the inclined plane Z upwards until it reaches the level D on the Point P falls and remains in this position.

The contact mushroom 12 is off the contact plate during this process 13 moved onto the contact plate 14, has separated the first external circuit and the second closed.

In this description - for the sake of simplicity - is not taken into account remained that the switching of the second circuit via the contact plate 14 twice he follows. Once at the entrance against the direction of arrow e by means of a wiping contact and then on the decline in the direction of arrow e by means of permanent contact. That this is so, proves the Fig. 7 with the help of the dimensions E, K and H.

E = K but H to E E is the distance between the contact plates 13, 14 from one another, but the path H of the tactile finger 6 (this is in the a basic position outlined with V and in any intermediate position with W) much longer.

This explains the wiper contact function resulting from the V shape of the U-ring a, b, but also the fact that the contact is made in the following way with every stroke H of the switching mechanism: Towards (in the event of a current surge) rest position P (permanent contact position) wiping contact 12, 14 Contact 12, 14 as rest position Q (permanent contact position) Back (with renewed rest position Q (out of contact position) Current surge) Pulse contact 12, 14 contact 12, 13 as rest position P (permanent contact position).

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Claims (1)

Claims: 9 sheet magnet relays for toys, preferably toy railroad vehicles, characterized in that the sensing finger of its anchor has a three-dimensional, control guided by means of an annular cam track and bistable control by means of stages (Positive ring guide), 2.) relay according to claim 1, characterized in that that the cam track (2, 3, 4, 5) is double-V-shaped, so that the legs of the two V are connected by channels (4, 5) which are preferably parallel to the plane of symmetry. 30) relay according to claims 1 and 2, characterized in that the sensing finger (6) is spring-loaded in three dimensions. 4o) relay according to one of claims 1 to 3, characterized in that that the two V (2, 3) are equally angled and that the bottom of one V is approximately runs in the same plane as the bottom of the other's basic mid-position, the V with the same adjustment and return paths. 5.) Relay according to one of claims 1 to 4, characterized in that that the Dastfinger is part of a flexible rod spring.