DE7516635U - Electromagnetic relay, especially small relay - Google Patents

Description

Dr H. Ccllenbusdi

8501 Sdiwaig / Nuremberg ^ - ·

fcwfc * io8 «2b - l # l * fonS75545 L

P 7510 / HGM 7511 J.

Max Ernst, Nuremberg Electromagnetic relay, especially small relay

The present invention relates to an electromagnetic relay, in particular a small relay, consisting of a bobbin, a coil, at least one soft iron yoke with a soft iron armature and switching contacts that can be actuated by the armature.

The object of the present invention is to provide a relay, in particular a small relay for low voltages (up to approx. 20 volts) that can be produced from as few individual parts as possible at low cost and that has a sufficiently good insulation with a long service life.

According to the invention it is proposed to design or store the yoke and armature so that the one penetrating the coil The yoke can be magnetically closed or interrupted at two magnetically opposite polarity points by the movable armature, that the yoke and armature are provided electrically isolated from one another and that the contact points of the yoke and armature form the contacts to be actuated or are provided with them. Due to the proposed design of the magnet yoke and armature special contact lamellas can be saved for the contacts to be actuated by the relay.

A particularly favorable design of the yoke and armature results from a further feature of the invention when the

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Yoke slightly protruding on one side of the coil, Weieheiaenatab with a rectangular cross-section and the anchor from consists of a U-shaped, rectangular in cross section soft iron body and the movable armature in Ausaparungen of Flange · of the bobbin · is slidably guided.

The inventive training dea relay allows two and also more than two working contact pairs and also booing contacts working together with them. that both the yoke and the anchor each consist of two or more parts that are isolated from one another.

laughs a particularly simple embodiment of the invention it is proposed that within the bobbin swel by an insulating lamella or the like. to provide separate, in cross-section rectangular soft iron bodies and to both Each side of the bobbin is to store a U-shaped armature in corresponding recesses in the flanges of the bobbin so as to be displaceable in opposite directions.

For the formation of rough contacts can be on opposite sides Sides of the bobbin in corresponding recesses in the flanges each have a base plate made of electrically conductive material used and also be provided on the inside of the U-shaped armature in corresponding recesses in the flanges of the bobbin each a spring member, the latter with one arm the misshapen anchor in the boo position of the beiais hold in the announcement against the fence plates serving as boo contacts.

For the formation of Stroasufleitungen the yoke pins, the Spring plates and the Ansohlagbleohe each with one over the spool

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lenkkörperunterieite projecting / jasatz provided, where this aniätse can durohietsen a printed circuit board, which has conductor tracks on its lower part, which the approaches are connected in particular by soldering.

To avoid contact resistance, the contact points of the yoke and armature used as contacts can also be used be provided with a coating of contact material.

An embodiment of the invention is shown in the figures 1-8 shown. Show it:

Fig. 1 the relay according to the invention with a solder connection plate in front view,

Fig. 2 the relay shown in Fig. 1 in a side view,

3 shows the relay shown in FIGS. 1 and 2 without a solder connection plate in a view from above,

4 shows a printed circuit board serving as a solder connection plate, seen from below;

5 one of the two relay armatures in a perspective view,

6 one of the two yoke parts in a perspective view, Fig. 7 one of the two spring members in a plan view and

8 one of the two stop plates with line feed in a perspective view.

In the figures, number 1 denotes the bobbin, the E.g. made of transparent plastic and the sur e simplification of two mirror symmetrical Parts is composed, which are assembled along the median plane are·

The bobbin 1 iet in Fig. 1 and 2 on an insulating plat te 2 placed, which on its underside with provide a metal covering 3 and is designed as a printed circuit board. In this printed circuit board 2,3 (Fig. 4) there are various breakthroughs. The two openings 4 are duruhsetzt pins 5, which are anchored in the flanges of the bobbin 1 and here soldering pads 5 for the wire ends of the relay coil 7 form.

In the central longitudinal plane of the recess 1 'of the bobbin 1, which is approximately square in cross section, there is a narrow lamella 8 made of insulating material and on each side of this lamella 8 a soft iron yoke part 9 with a rectangular cross section, the ends of which are approximately flush with the end faces of the bobbin 1 . At one end of each of these yoke parts 9, there is a downwardly projecting projection 9 ¹ on different end faces of the bobbin 1, which protrudes through a corresponding rectangular opening 10 in the printed circuit board 2, 3. The approaches 9 'are also intended to serve as solder connections.

In the middle part of the two end faces of the bobbin 1 are on both sides of the ends of the yoke parts 9 and in de '; Flanging the bobbin 1 cuboid recesses 11 provided, which extend to the middle of the relay up to the recess 1 '. These recesses 11 are through at the edges further recesses 11 * continued.

In these recesses 11,11 * are U-shaped anchors 12,12 * for Central longitudinal plane provided displaceably, wherein the slightly wider ends of the two Seiton legs 12 * in the Recesses 11 are guided or can slide. The movement

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the anchor 12,12 * is towards the middle through one of the two Yoke parts 9 limited. Behind the central webs 12 of the soft iron anchors 12, 12 ', stop plates 13 are inserted in notches 11 "which are transverse to the recesses 11 * and which in the middle on their outside are each provided with a connecting conductor. These connecting conductors 14 penetrate the printed circuit board 2, 3 in recesses 15.

In further recesses 16 in the flanges of the bobbin 1 there are projections 17 * of M or. S-shaped spring members 17, which with a tongue 18 against the inside of the Central web 12 each of an anchor 12,12 * rest. Lateral shoulders 17 * on the spring member serve as counter bearings for this purpose 17t which are connected to one another by straight legs 19 are. A pin closes down on one of the legs 19

20 to which the printed circuit board 2,3 in a recess

21 and which also serves as a power supply for the armature 12, 12 ·.

It can be seen from the figures that the two Ansohlagbleche 13 as rest contacts, the back of the central web 12 and the end faces of the legs 12 * of the two anchors 12, 12 * as movable work contacts and the contact points of these Sdienkel 12 * on the two yoke parts 9 as fixed work contacts to serve. To reduce transition resistances, these surfaces can also be covered with a contact material. Since the spring members 17-20 are also used to supply power, the inside of the middle web 12 of the armature 12, 12 * in the vicinity of the contact part can be dtr spring tongue 18, as indicated in Fig. 3 ₍ also covered with a highly conductive contact material.

7516635 03.OZ77

Claims (1)

Protection claims 1. Electromagnetic relay, in particular small relay, consisting of a bobbin, a coil, at least one soft iron yoke with a soft iron armature and switching contacts actuated by the armature, in which the yoke penetrating the coil can be magnetically closed or interrupted at two magnetically opposite polarity points by the movable armature is, yoke and armature are provided electrically isolated from each other and the contact parts of the yoke and armature are designed as contacts of working contacts or directly have such and in which the yoke consists of a slightly protruding on both sides of the smile, in cross-section rectangular soft iron and the armature consists of a U-shaped V / oak iron body with a rectangular cross-section, characterized in that the armature (12, 12 ') is guided displaceably with its two side legs (12 ¹ ) in recesses (11, 11') in the flanges of the coil body (1) is. 2. Electromagnetic relay according to claim 1, d-üdurcL:; € · ■ indicates that the coil body (1) from two du ^vi ch -.ine insulating lamella (8) or the like, separated in the cross section reni.'eoki / o soft iron body (9, 9 ') is interspersed una da ..-> to et i äe: i sides of the coil former (1) each have a Ü-ic.rmi, fp <η! Ι; γ (1,, 1 ') in recesses (11, 11') of the flanges of Spuleakörpf-rs (1) to form two contact pairs work ge ^ eul "are provided ubar <ii _f · verse, ::.>. - c - 5. Electromagnetic relay according to one of claims 1 or 2, characterized in that on PTjenüberlierenden sides ües bobbin (1) in recesses (11 ^lf ) each a stop plate (13) made of electrically conductive material is used and that on the inside of the U- shaped armature (12, 12 ') is provided in recesses (16) of the flanges of the coil body (1) each with a spring member (17), what? 3he with an Ann (18) hold the U-shaped armature (12, 12 ') in the rest position of the relay in the stop against stop plates (13) serving as normally closed contacts. 4. Electromagnetic relay according to one of spoke 1 to 3, characterized in that the yoke bars (9, 9), the spring plates (17) and the stop plates (13) each with a projection (9 ¹ 20, 14) above the bobbin underside are. 5. Electromagnetic relay according to claim 5, characterized in that that the relay is cufsetzbar on a printed circuit board (2, 3) and the lugs (5, 9 ', 14, 20) through a soldered connection can be connected to the conductor tracks of the printed circuit board (2, 3). 7516635 B3.0Z77