EP1394832A2 - Electromechanical remote switch - Google Patents

Abstract

For bistable contact operation, a cam track (15) is incorporated into the surface of the slide (7). The cam follower is a peg (16) engaging the track. The peg is fixed to a rocker (17), mounted to pivot parallel to the upper surface of the slide.

Description

The invention relates to an electromechanical remote switch with two switching paths, from which each have at least one fixed contact and one with this cooperating movable contact, wherein the movable contacts of the two switching paths arranged on a common slide and from this relative to the fixed contacts are movable, which remote switch further Magnetic system with an excitation coil and a movable armature of this, which with the Slider is coupled, which slider by means of a return spring in the direction a first switching position is pressed, wherein the slide in the area of the movable Contacts has two, separated by a slot arms and each arm the at least one movable contact piece in each case carries a switching path.

In DE-A1-37 07 491 a hinged armature relay is described. The magnet system has an armature acting on linearly displaceable actuating webs. These actuating bars each carry movable switch contacts, which are designed in the form of contact plates and cooperate with fixed switch contacts. The description of DE-A1-37 07 491 mentions several times that the two actuating webs two separate from each other executed components are, which are also mounted independently displaceable.

EP-A2-440 953 deals with a reclosing lock on a relay. It is here only the armature of the relay as well as that controlled by this, in the form of a linear slidable slide executed (contact) actuator shown. At the anchor opposite end of this actuator two contact springs are arranged, the Wear contacts. It is thus intended, the movable contacts of two To arrange switching sections on a single slider common to both switching sections, However, this slide with a removable arm form is not suggested.

In the embodiment of Figures 3 and 4, the contact springs could be kept in cages his. A precise statement can not be made in this regard, because the verbal Description does not detail this, but the contact spring storage only as "Intermediate link". From the drawings but it is clear that the Side walls of these intermediate pieces straight.

In JP-A-59 025 135 a multi-pole relay is described, the armature via a Rocker arm acting on a slide or can move this linear. This slider has a total of four openings, in which rectangular contact plates, the their two free ends each carry contact pieces, are introduced. The Contact plate is by means of a lying also within the opening Pressed helical compression spring against the front end side of the opening. The lateral ones Limiting surfaces of this opening are parallel to the direction of the Slide.

The object of the present invention is to provide an electromechanical remote switch at the beginning specify type, which is characterized by particularly easy mountability. Furthermore, the specified remote switch is particularly simple from its basic Embodiment comprising two simultaneously operated switching paths to only one Switching distance having remote switch can be rebuilt.

To achieve the above object, the invention provides that at least one Section of the first arm as separated from the rest of slide, on the remaining slide fixable component is formed.

This allows, when assembling the remote switch, first the slider without the first Insert arm into the lower shell of the housing and then the intermediate shell, which separates the two switching paths from each other and through the slot between the passing through both arms. Finally, the first arm on the rest Sliders are set. This can be a tedious threading of the intermediate shell in the slot between the arms, as in previously known one-piece design of the first arm with the remaining slide is necessary, omitted.

Furthermore, by simply omitting the first arm and the electrically conductive Components of this first arm associated switching path a single-pole, only one Switching distance exhibiting remote switch can be realized. Should be both bipolar as well unipolar remote switch are made, so all components, in particular the housing, the magnet system and the slider of both product types similar, so with the same tools and therefore produced particularly cost. Only at Assembly is a distinction between single-pole and two-pole remote switches by installing the first arm and the electrical components of the first switching path hold true.

In a further development of the invention can be provided that the entire first arm than from remaining slider is formed separately, fixable on the remaining slider component

In a further embodiment of the invention can be provided that in the first, as of remaining slider separately formed arm a dovetail groove is incorporated, with which the first arm to a corresponding, to the rest Slider molded guide can be placed.

Thus, the first arm can be particularly simple and reliable and without any Auxiliary materials, such as Adhesive, to be fixed on the remaining slide.

Fig.1 und 2 jeweils einen erfindungsgemäßen elektromagnetischen Fernschalter umfassend zwei Schaltstrecken bei abgenommener Oberschale im Schrägriß, wobei pro Schaltstrecke jeweils ein beweglicher Kontakt 2 vorgesehen ist und dessen Verbindung mit einer starren Stromschiene 5 unterschiedlich realisiert ist;

Fig.3 eine bevorzugte Ausführungsform eines erfindungsgemäßen elektromagnetischen Fernschalters umfassend zwei Schaltstrecken bei abgenommener Oberschale im Schrägriß, wobei pro Schaltstrecke zwei bewegliche Kontakte 2 vorgesehen sind;

Fig.4 das Magnetsystem 8 eines erfindungsgemäßen Fernschalters mit dem Schieber 7 im Schrägriß;

Fig.5 das in Fig.4 Gezeigte, wobei zusätzlich die Wippe 17 dargestellt ist;

Fig.6 den Schieber 7 mit der Wippe 17 im Schrägriß;

Fig.7 das in Fig.3 Gezeigte, wobei die Zwischenschale 21 von der Unterschale 23 abgenommen dargestellt und die Wippe 17 weggelassen ist;

Fig.8 das in Fig.3 Gezeigte, wobei sich der Schieber 7 in seiner zweiten Schaltstellung befindet und

Fig.9 eine alternative Ausführungsform der in den Schieber 7 eingelassenen herzförmigen Kulisse 15.

The invention will be described in more detail with reference to the accompanying drawings, in which particularly preferred embodiments are shown. Showing:

Figures 1 and 2 respectively an electromagnetic remote switch according to the invention comprising two switching paths with removed top shell in the oblique, each switching path per a movable contact 2 is provided and its connection is realized differently with a rigid busbar 5;

Figure 3 shows a preferred embodiment of an electromagnetic remote switch according to the invention comprising two switching sections with the upper shell removed in an oblique plane, wherein two movable contacts 2 are provided per switching path;

4 shows the magnet system 8 of a remote switch according to the invention with the slide 7 in an oblique view;

Fig.5 shown in Figure 4, wherein in addition the rocker 17 is shown;

6 shows the slide 7 with the rocker 17 in an oblique view;

Figure 7 shown in Figure 3, wherein the intermediate shell 21 shown removed from the lower shell 23 and the rocker 17 is omitted.

Fig.8 shown in Figure 3, wherein the slide 7 is in its second switching position and

9 shows an alternative embodiment of the recessed into the slide 7 heart-shaped gate 15th

An inventive electromechanical remote switch includes as already known Such switching devices at least one switching path. Each switching path has at least one fixed contact 1 and at least one movable contact 2. These two Contacts 1,2 work together insofar as they open and close one to them enable connected circuit.

As shown in Figure 1, the fixed contact 1 is fixed on a busbar 3, which with its end portion 3 'in a known per se, in the enclosed Drawing figures not shown terminal opens. The movable contact 2 is connected via a movable conductor cable 4 with another busbar 5, whose End portion 5 'in a second, also not shown terminal opens.

Instead of the conductor cable 4 can also be executed with a small thickness and thus elastic busbar 59 may be provided (see FIG. The movable contacts 2 are each arranged on a slide 7 and from this relative to the fixed Contact 1 movable. About said terminals is a circuit connected to the Remote switch according to the invention to be switched, with this connectable. Of the Remote switch according to the invention is designed to be installed in a cabinet, what to be Housing in a conventional manner, a lower shell 23 and an attachable to this Upper shell (not shown in the accompanying drawings) includes.

The remote switch according to the invention will be as in the accompanying drawings represented, preferably two of a single slider 7 simultaneously actuated Comprehensive formed switching paths. To these two switching sections electrically isolate against each other, the housing further comprises an intermediate shell 21 which between the upper and lower shell 23 is located.

All of the details described below as being inventive are also included without limitation Embodiment of the switching path according to Figure 1 or Figure 2 applicable, regardless of the circumstance, that they are described below with reference to the preferred embodiment shown in FIG Switching distance are discussed.

The switching path of Figure 3, in contrast to the above two versions, two fixed contacts 1, which at a small distance from each other and each on a rigid busbar 3.5 are fixed. There are two movable contacts 2 are provided, the are fixed on an electrically conductive plate 6, wherein the distance between them movable contacts 2 that of the fixed contacts 1 corresponds.

The plate 6 is arranged on a slide 7 - in the manner described in more detail below, with which the slide 7 with the two movable contacts 2 in Active connection is and this can move relative to the fixed contacts 1.

To drive the slider 7, a magnet system 8 is provided. To the slide 7 too To be able to operate manually is at its upper end an operating knob 36th arranged, which protrudes through an opening of the lower shell 23.

The magnet system 8 comprises an exciter coil 9 and an armature 10 movable therefrom. In the embodiment shown in the accompanying drawings is inside the Excitation coil 9, a magnetic core 11 is arranged in the magnetically good conductive connection with a running approximately parallel to the coil longitudinal axis yoke 12. At the front 61 This yoke 12 is designed as a flat plate anchor 10 in the region of its first End mounted pivotally and thus designed as hinged armature (see Fig. 4,5). This Storage is realized so that the armature 10 with an edge of its end face on the yoke front side 61 is on. At the yoke 12, a resilient sheet metal strip 62 is attached, which is the Joch front side 61 projects beyond and bent in the direction of the armature 10 section 63rd has, with which it engages over the armature 10. With this section 63 acts the resilient metal strips 62 at the same time as an anchor spring.

With the region of its second end face, the armature 10 projects into a slot-shaped Recess 13 of the slider 7 in and is in this way with the slide. 7 coupled. The slider 7 is in the direction symbolized by the arrow 14 slidably mounted in the housing of the remote switch and in this direction of displacement 14 from Anchor 10 movable.

A special feature of this magnet system 8 represent the anchor bearing plates 60 which are connected to the Side surfaces of the yoke 12 are fixed. They are the front side 61 of the yoke 12 and the formed in the region of this end face 61 lying portion of the armature 10 outstanding. About this anchor bearing plates 60 can always, especially when the anchor 10 is in its position shown in Fig. 4,5, lifted from the magnetic core 11 position, a flow relatively large magnetic flux. This can always be a relatively large on the anchor 10 magnetic force to be exerted, resulting in a high functional reliability of the Magnetic system 8 leads.

On the slide 7 further acts a return spring 20, which the slide 7 in the in Fig. 3 shown first switching position presses. This return spring 20 is as Helical compression spring designed with its first end on a part of the housing, preferably the intermediate shell 21, which separates the two switching sections, supported and the other end rests on the slide 7. To make a stable determination of Return spring 20 on slide 7 and the housing (on the intermediate shell 21) to ensure are in the areas of slide 7 and housing, at which the ends of the return spring Abut 20, zapfenfömige projections 22 provided on which the ends of the Return spring 20 are fitted (see Fig.7 for the housing, i.e. on the intermediate shell 21 fixed Anformung 22).

If the excitation coil 9 is subjected to voltage, the armature 10 is a magnetic Force applied, which is greater than the force generated by the return spring 20, so that the Slide 7 can be moved against the return spring 20.

It is also within the scope of the subject invention and in the scope of the connected claims, constructing the magnet system constructively differently, for example, in the form that the movable from the exciter coil 9 anchor 10 than in Inside the bobbin of the excitation coil 9 slidably mounted bolt is formed, as provided for example in Schlagankerauslösern of circuit breaker is.

In a remote switch comprising the previously discussed components, the at least one, with the at least one fixed contact 1 cooperating contact 2 monostable movable because the return spring 20, the slide 7 and with him the at least one movable contact 2- pushes in the direction of the first switching position.

To the remote switch bistable switching behavior, so a bistable contact operation too lend, a gate 15 is incorporated in the surface of the slide 7. This is preferably as shown in the accompanying drawings, such as heart-shaped trained, but can - as following the discussion of how this works heart-shaped backdrop will be set forth, also have other shape.

In this backdrop 15 engages a pin 16 which is fixed on a rocker 17. This seesaw 17 is parallel to the slide 15 having slide surface pivotable in Housing the remote switch stored.

This mounting is realized by means of two cylindrical projections 18 on the rocker 17, which engage in recesses 19 which are incorporated in the housing. In Fig.5 is one of these projections 18 recognizable, the second lies on the not visible in Figure 5, opposite surface of the rocker 17. The indentations 19 for receiving the cylindrical projections 18 have slightly larger dimensions than the projections 18th on, whereby the rocker 17 slightly pivoted also normal to the direction of displacement 14 can be.

The recesses 19 are preferably not as fully cylindrical, mutually aligned and formed at a distance from the thickness of the rocker 17 lying bores, because the installation the rocker 17 would be difficult in such holes. As can be seen in Figure 7, the Indentations 19 incorporated in the lower shell 23 and have a slot-shaped shape. Preferably, these indentations have 19 semi-cylindrical bottoms whose diameter is slightly larger than that of the projections 18.

To the inner wall of the lower shell 23, two plates 24 are formed, in which the Intermediate shell 21 facing end faces each incorporated such a recess 19 is. The distance between these two plates 24 corresponds to the thickness of the rocker 17 in Area of their projections 18. The rocker 17 is in the distance between the platelets 24th used, wherein the projections 18 come to lie in the recesses 19.

To the intermediate shell 21 also spaced apart plates 24 'are integrally formed. The platelets 24, 24 'are arranged so that they when placing the intermediate shell 21 on the lower shell 23 are aligned with each other and with their faces to each other or only slightly spaced from each other to come to rest. The indentations 19 in the Lower shell 21 arranged platelets 24 are thereby from the platelets 24 'of Closed intermediate shell 23 and the projections 18 in the recesses 19th locked in.

The heart-shaped gate 15 preferably has the one shown in Figs.1-8 unbalanced shape. This comprises a displacement direction 14 of the slider 7th extending tip 24 and straight sections 25, 29, which subsequent to this tip 24 are arranged (see Fig.6). The straight portions 25,29 are V-shaped to each other arranged and separated by an approximately V-shaped system 27 from each other. To each of these straight sections 25,28 is followed by a curvature 26,28, which two Curves 26,28 in the area above the V-shaped system 27 open into each other.

The heart-shaped gate 15 and arranged on the rocker 17 pin 16 form a Locking device which works as follows:

In the state of the remote switch shown in Fig.3, 5 and 6, the pin 16 is in the Tip 24 of the heart-shaped backdrop 15. The recognizable in Figure 3 switching path of the Remote switch is off because the moving contacts 2 from the fixed Contacts 1 are lifted.

If the exciting coil 9 is applied with voltage in this situation, the slider 7 moved down (direction reference to the position shown in Figure 3 of Remote switch). During this movement, the pin 16 first passes through the in Displacement direction 14 extending tip 24 and subsequently the right-hand straight Section 25 of the gate 15. The subsequent to this straight section 25 Curvature 26 leads the pin 16 on the approximately V-shaped system 27, where he in Fig.6 with continuous line is shown schematically. During this pass of the pen 16 through the gate 15, the rocker 17 is slightly first in a clockwise direction (until the pin 16 has reached the curvature 25) and then pivoted counterclockwise.

If the field coil 9 is free of tension, the return spring 20 can move the slider 7 upwards to press. The approximately V-shaped system 27 is thereby displaced in the direction of the pin 16 until this rests on the system 27 (see dash-dotted registered position of the pin 16). The slider 7 can thus no longer return to the position shown in Figure 3, but is held in the position shown in Fig.8, in which the movable contacts. 2 the visible in Fig. 3.8 switching path still rest on the fixed contacts 1 and This switching path is thus closed. This second switching position is thus also at Voltage-free excitation coil 9 durable (stable) switching position.

A movement of the slider 7 back into the switching position shown in Figure 3 can by another, applied to the exciter coil 9 voltage pulse done: The slider 7 is moved back down by such another voltage pulse, whereby the Pin 16 is moved into the curvature 28 of the left wing of the heart-shaped gate 15 (see dotted representation of the pin 16 in Figure 6). After the voltage pulse decayed, the return spring 20 can move the slider 7 upwards, the Pin 16 passes over the left straight section 29 back into the top 24 of the link 15. The slide 7 is now again movable into the switching position shown in Figure 3, in which the visible in Figure 3 switching path is open.

The remote switch according to the invention may differ from the previous versions also be operated manually, including the slide 7 -as already explained above- with a by an opening of the lower shell 23 protruding actuating button 36th is provided. The locking mechanism formed from pin 16 and link 15 works with manual slide operation but completely similar.

Thus, the pin 16 always the just discussed, counterclockwise path takes through the scenery 15, the following two measures are provided: First, there is a spring 30, which biases the rocker 17 in the direction of the left wing of the link 15. Under "wing of the backdrop 15" is included in the context of this description and the Claims in each case the entirety of a straight section 25 and 29 and to him subsequent curvature 26 or 28 to understand. The bias of the rocker 17 in Direction of the left gate wing is to be understood as exemplary, would be completely equivalent it to bias the rocker 17 in the direction of the right gate wing, of course, the Setting 15 are executed mirrored around their axis running in the direction 14 shift would.

This spring 30 is in the preferred embodiment of the accompanying drawings designed as a helical compression spring, which at one end on the inner wall of the Lower shell 23 and the other end on the rocker 17 is supported. For stable fixing of the spring 30 can analogously to the return spring 20 both on the rocker 17 and on the lower shell 23 peg-shaped projections 37 may be provided on which the ends of the spring 30th are plugged.

The force exerted by this spring 30 on the rocker 17 ensures that the pin 16 always in the direction of the left wing of the gate 15 is pressed and thus the with continuous, dash-dotted and dotted line positions.

It would be possible without this spring 30, if their function (rocker 17 in the direction left wing of the backdrop 15 press) is otherwise achieved. This can be, for example be effected in that the rocker 17 slightly inclined in the direction of the left gate wing is arranged inclined, whereby the provided with the pin 16 end of the rocker 17 through the Gravity is pushed in the direction of the left wing wing.

To prevent the pin 16 after leaving the top 24 in the left straight Section 29 enters, is the bottom of this straight section 29 with a ramp 31st provided, which begins in the adjoining the bend 28 area and in the direction the top 24 rises. The ramp 31 terminates with an edge 33 which is flush with the area the straight portion 25 lying edge 32 of the V-shaped system 27 extends. The Foot-side end of the pin 16 slides when leaving the tip 24 along this edge 33rd and thus can not enter the left straight section 29, but must travel along the Run edge 32 of the V-shaped system 27 in the right straight section 25.

If the rocker 17 is biased in the direction of the right gate wing, the plane discussed Ramp 31 in the right straight portion 25 of the gate 15 may be arranged.

An alternative, also conceivable constructive embodiment of the heart-shaped gate 15th lies in it, this perfectly symmetrical, so with identical left and right wings form (see Fig.9). The pin 16 comes here after leaving the top 24 with the Cut 34 of the V-shaped projection 27 in touch and then happens to be in the right 25 or the left straight section 29 are directed. After the pin 16 of the Curvature was deflected 26 or 28, it comes to fading after the excitation coil 9 applied voltage pulse in the dot-dash line position below the Cutting edge 35 to lie. In a recent displacement of the slider 7 comes the pin 16 in contact with this cutting edge 35 and again becomes dependent on chance in the right 26 or directed into the left bend 28. In both cases, the pen 16 ultimately returns back in the top 24 again.

From the explanation of the function of the gate 15 is clear that this is also one of the Heart shape may have different shape, provided that in this figure, the pin 16 in two spaced apart retaining points are stored stable and the backdrop 15th the pin 16 friction between these two retaining points can lead slidably. For example, it would be possible, based on the embodiment of Figure 9, the scenery 15 half-heart-shaped, so encompassing only one of the two wings to perform.

The shape of this wing could according to another conceivable embodiment of the Deviate half-heart shape and be formed approximately in the shape of a half ellipse.

The invention is thus not limited to those shown in the drawings, such as heart-shaped Design of the backdrop 15 limited.

The remote switch according to the invention can be designed to include any number of switching paths are in the accompanying drawings, only a two switching paths comprehensive remote switch is shown. In FIGS. 1-3, only one switching path is in each case shown, which in the area between the intermediate shell 21 and the upper shell of Remote switch housing is arranged. The second switching path is between the Intermediate shell 21 and the lower shell 23 and is in terms of the design principle same as the first, in Figs.1-3 visible switching path constructed.

It can be provided that this second switching path with a different switching function than the first switching path is constructed. By this is to be understood that then if the first Switching circuit normally open function (switching path is in the first, in Figs.1-3 shown switching position and in the second, shown in Fig.8 switching position closed), the second switching path is constructed with Öffnerfunktion, so that they in the the first switching position (Fig.1-3) closed, in the second switching position (Figure 8), however is open.

The functions of the two switching sections but are arbitrary or arbitrary combinable with each other. Thus, for example, both switching paths as normally open or both be designed as an opener or one or both switching paths as Changer be executed.

Magnetic system 8 and slide 7 are provided in common for both switching paths, i. the movable contacts 2 of the two switching paths are on a single, common Slide 7 arranged and movable from this relative to the fixed contacts 1.

As best seen in Figure 4, the slider 7 in the area of the movable Contacts 2, two, separated by a slot 40 arms 41,42. On this two arms 41,42, the movable contacts 2 of the remote switch are arranged, each arm 41, 42 being the only movable contact piece 2 or the two moving ones Contact pieces 2 each carries a switching path. When fully assembled Housing of the remote switch is the wall 45 of the intermediate shell 21 in the region of Slot 40. Each of the two arms 41,42 thus projects into its associated switching path in and is in the range of the movable contact 2 of the other switching path through the wall 45 of the intermediate shell 21 is separated.

A special feature of the slider 7 provided in a remote switch according to the invention is that the entire first arm 41 as the rest of the slider 7 separate component executed, but the remaining slide 7 can be fixed. This fixability can basically be realized arbitrarily, for example, the arm 41 could be glued to the remaining slide 7 become.

According to the preferred embodiment shown in the accompanying drawings is a detachable, positive fixing of the arm 41 is provided on the slide 7:

In the first arm 41 while a dovetail groove 43 is incorporated. In that Area of the remaining slider 7, in which the arm 41 is to be set, is a Guide 44 integrally formed with respect to its cross-sectional shape with that of the groove 43rd matches and is slightly smaller than this is executed. The arm 41 is on this Guide 44 placed and thus the remaining slide 7 positively fixed.

The shape of the cross section of groove 43 and guide 44 can be arbitrarily selected and For example, be the hammer shape shown in the drawings. Alternatively groove 43 and guide 44 could have trapezoidal cross-section, with the longer the parallel to each other side edges of this trapezium in the bottom of the Groove 43 and the corresponding surface of the Anformung 44 must lie to a positive connection of arm 41 and remaining slide 7 to achieve.

As is apparent from Fig.7, when assembling the remote switch, the first Slider 7 are inserted into the lower shell 23, then the intermediate shell 21st be placed and then the arm 41 are attached to the remaining slide 7. On tedious threading of the slider arms 41 and 42 in the areas between lower shell 23rd and intermediate shell 21 or between the upper shell and intermediate shell 21 can thus be avoided.

In order to achieve this simple mountability of the slide 7 in the remote switch housing, may be provided deviating from the previous presentation that not the entire arm 41, but only a portion of the arm 41, namely the lower, the movable Contact 2 carrying section, as the remaining slide 7 separate component is formed. The other portion of the arm 41 is made in one piece with the slider 7. there However, it should be noted that the other, with the slider 7 made in one piece Arm section in the first switching position (Figure 3) located slide 7 still above the wall 45 ends, so that when assembling the remote switch, the wall 45 of the Intermediate shell 21 is not threaded into the slot 40 between the two arms 41,42 must become.

Another aspect of the invention lies in the structural design of Holder of the movable contacts 2 on the slide 7. As is apparent from Fig.6, the Slider 7 for holding the movable contacts 2 a switching path to a cage 50. Since the remote switch shown in the drawings comprises two switching paths whose movable contacts 2 are arranged on two arms 41,42 as described above each of these arms 41,42 equipped with such a cage 50.

This cage 50 has two, in the direction of displacement 14 of the slider 7 extending Side walls 51,52 and these connecting cover plates 53,54 on. The one moving Contact 2 (see Fig.1,2) or the two movable contacts 2 (see Fig.3) is or are on an approximately rectangular plate 6 is arranged, which platelet 6 between the Side walls 51,52 of the cage 50 is added. Within the cage 50 is a Compression spring 55 is arranged, which presses the plate 6 against one of the top surfaces 53,54.

Against which of the two top surfaces 53,54 the plate 6 is pressed, it is Depending on which switching function (normally open or normally closed) the relevant switching path should meet. Is the switching path as shown in Figure 3, designed as normally open, wherein the fixed contacts 1 are arranged below the lower top surface 54, the Platelet 6 pressed against the lower top surface 54. At one to close this Switching path leading movement of the slide 7 come to the movable contacts 2 the fixed contacts 1 to the plant. Because of this concern, the platelet 6 at further progressive displacement of the slide 7 is no longer moved are, but it is the compression spring 55 is compressed. The contact pressure with which the movable contacts 2 are pressed against the fixed contacts 1 is determined by the Compression of the compression spring 55 increased.

When the switching path is designed as an opener, the fixed contacts 1 are above the upper deck surface 53 of the cage 50, which is why the plate 6 against this upper deck surface 53 is pressed (see the left in Fig.6 first arm 41).

The compression spring 55 is preferably designed as a helical compression spring, which is with her one end on the plate 6 and with its other end on one of the cover plates 53,54 of the Cage 50 is supported. Alternatively, the compression spring 55 could, for example, as a leaf spring be educated.

When forming the compression spring 55 as a helical compression spring according to the in the Drawings illustrated preferred embodiment of the remote switch on the plate. 6 and on one of the cover plates 53,54 of the cage 50 formations 56 are arranged on which the ends of the compression spring 55 are attached. These projections 56 are preferably dome-shaped, but could also be designed as a cylindrical pin.

The inner surfaces 57,58 of the cage side walls 51,52 parallel to each other and to an acute angle α inclined to the direction of displacement 14 of the slider 7. The size of this acute angle α is preferably in the range between 3 and 5 °.

As discussed above, when the movable contacts 2 are assigned to them abut fixed contacts 1, which carries these movable contacts 2 platelets. 6 from the top surface 53,54 of the cage 50, on which it can come to rest, lifted and compresses the compression spring 55 accordingly.

During a displacement of the slide 7, which leads to a lifting of the movable Contacts 2 leads from their associated fixed contacts 1, the movable contacts 2 initially not lifted from the fixed contacts 1: The Platelets 6 and with him the movable contacts 2 are rather of the compression spring 55th pressed against the fixed contacts 1, wherein with progressive displacement of the Slider 7, the compression spring 55 is relaxed. Only when one of the cover plates 53,54 of Cage 50 comes to rest on slide 6, this is moved and become the movable contacts 2 lifted from the fixed contacts 1.

During the prior to this lifting taking place of the cage 50 against the Platelets 6 slide the inner surfaces 57,58 of the cage side walls 51,52 on the platelet. 6 along. Due to the inclination of the inner surfaces 57,58 relative to the direction of displacement 14th of the slider 7, the plate 6 is displaced normal to the direction of displacement 14. The movable contacts 2 are thereby parallel to the surfaces with which they are on the rest on fixed contacts 1, moved. In this lateral, normal to

Displacement direction 14 and the lifting movement relative movement of the movable 2 relative to the fixed contacts 1 are minor Welding between the contacts 1.2 torn.

With a displacement of the slider 7, which is to apply the movable contacts 2 leads to the fixed contacts assigned to them 1, as already above explained- initially the movable contacts 2 applied to the fixed contacts 1 and with further progressive displacement of the slider 7 acting on the plate 6 Compressed compression spring 55. Also during this compression, the inner surfaces slide 57,58 on the plate 6 along what a normal to the direction of displacement 14 extending Displacement of the movable contacts 2 causes. Since the movable contacts 2 there already bear against the fixed contacts 1, the movable contacts 2 to the fixed contacts 1 rubbed, resulting in a cleaning of the contact surfaces of both contacts 1,2 results. This contributes to the achievement of a low contact resistance or to Maintaining this low resistance over the service life of the remote switch.

Claims (3)

Electromechanical remote switch having two switching paths, each of which comprises at least one fixed contact (1) and a movable contact (2) cooperating therewith, the movable contacts (2) of the two switching sections being arranged on a common slide (7) and facing away therefrom the stationary contacts (1) being movable, which remote switch further comprises a magnet system (8) with an excitation coil (9) and an armature (10) movable therefrom, which is coupled to the slide (7), which slide (7) is pressed in the direction of a first switching position by means of a return spring (20), wherein the slide (7) in the region of the movable contacts (2) has two arms (41, 42) separated from each other by a slot (40) and each arm (41 , 42) the at least one movable contact piece (2) each carries a switching path, characterized in that at least a portion of the first arm (41) as from the remaining slide (7) separate, on the remaining slide (7) fixable component is formed. Electromechanical remote switch according to claim 1, characterized in that the entire first arm (41) as from the remaining slide (7) is separate, on the remaining slide (7) fixable component is formed. Electro-mechanical remote switch according to Claim 1 or 2, characterized in that a dovetail-shaped groove (43) is incorporated in the first arm (41) formed separately from the remaining slide (7), with which the first arm (41) acts on a corresponding, on the remaining slide (7) integrally formed guide (44) can be placed.

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