DE2402236C3 - Pluggable electromagnetic relay with a cuboid housing - Google Patents

Description

The present invention relates to a pluggable housing provided with a cuboid electromagnetic relay according to the preamble of claim 1.

In a known relay of this type (DE-OS 21 26 214) the contact springs are only limited Space available, whereby the contact springs have small cross-sections and are close to one another, with the result that the permissible switching voltages and currents are limited.

It is therefore an object of the present invention to provide a plug-in relay of the type mentioned at the beginning to develop that with a very small design a relatively large space for accommodating the contact springs

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This object is achieved by the features contained in the characterizing part of claim 1

Advantageous embodiments of the invention are described in the subclaims. So through the Providing a snap-in lug enables the relay to be easily assembled with the Housing guaranteed. By providing an insulating plate at the second relay end, a simple one is made Establishing immovable contacts achieved

The actuation of the movable contact springs by the armature takes place without intermediate links. In addition the outwardly bent ends of the armature have insulating sleeves, by means of which the movable ones Contact springs are actuated. These ends are between the movable contact springs and the immovable contacts arranged so that when the armature is pivoted into the working position a Switching of the contacts is made. With this switchover, the armature only works against the Spring force of the movable contact springs.

An embodiment of the invention is shown in the drawing and is described in more detail below. It shows
F i g. 1 is a side, partially sectioned front view of the relay;

FIG. 2 is a sectional view taken along line 2-2 in FIG Fig. 1;

Figure 3 is a sectional view taken along line 3-3 in Figure 4;

F i g. 4 to 6 horizontal sectional views of the in F i g. 1 relay shown.

The relay has a U-shaped armature 28 with two legs 1 and 2, which are connected to a web 3 are connected, which is pivotably mounted in a recess 4 on one side. The anchor is provided at the top with two outwardly projecting ends 5 and 6, on which insulating sleeves 7 are arranged are. These ends 5, 6 with the insulating sleeves 7 are between middle, elastic contact springs 8, which with movable contacts 9 are provided and immovable contacts 10, which are also by elastic Springs are formed. The contacts are actuated in a direct manner with no between armature 28 and the contact springs 8 arranged intermediate elements. The contact springs 8 are due to their Elasticity at rest with the immobile contacts 10 in contact. When pivoting the Armature 28, however, the movable contact springs 8 with the help of the ends 5,6 against another Set of immobile contacts 11 pressed.

The constant distance between the immobile contacts 10, 11 is maintained with the help of an insulating plate 12, which according to FIG. 5 are provided with approaches 13,14, on both sides of which the immovable Contacts 10, 11 are in contact. For better fixation, there are immobile contacts 10 with small openings provided, in which lugs 25 of the insulating plate 12 protrude. The immobile contacts 11 are on

the opposite side of this rectangular Approaches 13, 14. The insulating plate 12 also has projections 15, 16, which of the same have a certain Give guidance.

The figures also show a magnetic yoke part provided with a frame 26 designed as a magnetic yoke Excitation coil 17, which in the excited state connects the web 3 of the armature 28, which is supported in the recess 4 attracts, whereby the two ends 5, 6 including the insulating sleeves 7 against the movable contact springs 8 are pressed so that they come into contact with the immovable contacts 11.

The relay is arranged within a cuboid housing 22, which by means of a base plate 18, through which the connection contacts 19 for the is contacts 10, 11 and the contact springs 8 and the Connection contact 20 for the frame 26 extend, is closed at the first relay end. In the housing 22 are the frame 26, the armature 28, the contacts 10,11, the contact spring 8 and other additional elements arranged. The one-piece frame 26 can be made from the Housing 22 can be removed with the aid of an attachment 23, which according to FIG. 1 lies within an opening 24, which is arranged at the rear of the relay housing A second at the second relay end perpendicular to the Relay base area directed approach 21 of the frame 26 connects the frame 26 with the one lying there Coil core 27. The armature 28, the coil core 27 and the frame 26 cooperate in such a way that the armature 27 is not used to guide the flow and thus the U-legs 1, 2 have a smaller cross-section can.

Due to the structure of the relay, the side of the excitation coil is used to accommodate the contact springs available space is significantly increased, which means higher, permissible switching voltages and currents are possible. Switching reliability is also increased by enlarging the space.

For this purpose 3 sheets of drawings

Claims (3)

1 claims: 1. Pluggable, with a cuboid housing provided electromagnetic relay, with the coil core, magnetic return path, the U-shape having anchors and the contact springs in different superimposed levels in the extend substantially parallel to each other, the U-legs of the armature and the contact springs are arranged on both sides of the excitation coil, such that the height of the relay is perpendicular to the Coil axis is determined by the diameter of the excitation coil in that direction; where the Armature in the area of the first relay end carrying the connecting pins with formed on its legs Formings is pivotably mounted in such a way that when the relay is actuated the on opposite second relay end located armature end for adjusting between Moving contact springs arranged in fixed contact springs carries out movement serving, characterized in that the magnetic yoke part is located in the Base area of the relay extending, the excitation coil (17) in this area comprehensive frame (26) is formed, the at the second relay end a perpendicular to the relay base area approach (21) for connecting the frame (26) with the end of the coil core (28) lying there and in the Area of the first relay end Recesses (4) for magnetically locking mounting of the armature (28) has, the web (3) connecting the two U-legs (1, 2) with that in the area of the first Relay end lying end of the coil core (27) cooperates, and that the thus for the flux guidance not used, ie having a correspondingly small cross section, close along the coil extending U-legs (1,2) of the armature (28) at their outwardly bent ends (5,6) to immediate actuation of the movable contact springs (8) wear insulating sheaths (7). 2. Relay according to claim 1, characterized in that the upper part of the opening of the frame (26) has a projection (23) which engages in an opening (24) such that after the disengagement of the Approach (23) a removal of the relay from the upper part of the cuboid relay housing (22) in the direction of the base plate (18) interspersed with connection contacts (19, 20) is. 3. Relay according to claim 1 or 2, characterized in that in the region of the second Relay end an insulating plate (12) is provided, which on both sides with rectangular lugs (13, 14) is provided on which the immovable contacts (10,11) rest, and that this insulating plate (12) is provided with additional projections (15, 16) which partially guide the Plate revealed.