AT412433B - 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

AT 412 433 B

The invention relates to an electromechanical remote switch comprising at least one fixed contact and a cooperating with this monostable movable contact, which is arranged on a slide and movable relative to the fixed contact therefrom and a magnet system with an excitation coil and an armature movable from this 5, with the slider is coupled, which slider is pressed by means of a return spring in the direction of a first switching position.

Such remote switches can be designed in two different versions, which differ by their switching behavior. On the one hand, monostable remote switches are known, which are always held by the return spring in a first switching position and a second switching position can only take 10 as long as applied to the exciter coil a sufficiently large voltage. Such remote switches are also referred to as a relay or contactor.

Bistable remote switch (also referred to as impulse switch), however, two stable positions can maintain stable when their exciter coil is de-energized. Only for switching from one to the other switching position, a voltage pulse or a current impulse to be applied to the 15 excitation coil.

In US-PS-4 097 832 a single-pole hinged armature relay is described. This has, as usual, a coil with a core on the first frontal end of an L-shaped yoke is grown. At the upper end of the parallel to the core extending leg of this yoke, an anchor is pivotally mounted. The armature carries an insulating layer on which a contact spring 20 is fixed. This contact spring carries at its free end the movable contact pieces, which interact with the fixed contact pieces. The actual invention of US Pat. No. 4,097,832 is a plastic actuator. This has a relay housing by projecting the operating knob, by pressing which actuator button of the main body of the actuating element can be moved. In this displacement, the armature is pivoted over the oblique surface and thus the contact set is actuated.

In DE-A1-39 38 489 a relay switch is disclosed, which is similar to the relay of US-PS-4 097 489 ausgeiidet as hinged armature relay. It comprises a magnetic coil with a core and an adjoining this, L-shaped yoke. At the front end of the parallel to the core extending leg of the yoke of the hinged armature is pivotally mounted. On this hinged armature a shift finger is fixed, which acts on movement of the armature on a yoke supported rocker switch.

DE-A1-44 11 036 relates to a bistable flat relay. The magnet system of this relay again comprises a coil with a core and an adjoining L-shaped yoke. At the free end of this yoke is also a L-shaped hinged armature pivotally mounted 35. The approximately parallel to the longitudinal axis of the coil extending portion of the armature engages with its free end in the first end of a plunger. This plunger is slidably mounted in the housing in the direction of its longitudinal axis and acts with its second end on a control member. This control member is a pivotally mounted in the housing switching cam, which actuates the Umschaltkontaktfeder, which carries at its free end the movable contact piece. The control element can assume two stable positions (FIG. 1 first position, second position) in which the movable contact rests against the first fixed contact (FIG. 1) or the second fixed contact (FIG. The stability of these two switching positions is achieved by means of a dead center spring, which holds the control member in each of the two positions.

It is an object of the present invention to provide an electromechanical Femschalter the one-45 gang mentioned type, in which a bistable switching behavior with as few and simply held components can be achieved. Furthermore, this bistable remote switch is particularly easy to be converted to a monostable remote switch.

According to the invention, this is achieved in that the bistable contact actuation incorporated into the surface of the slide a backdrop and an engaging in this backdrop pen pre-50 is seen, which is fixed on a rocker, which is mounted parallel to the slide having sliding surface ,

The scenery is part of the slide provided anyway and thus does not increase the component cost of Femschalters. Since the slide is usually made as an existing plastic injection molding part, the backdrop can very easily by providing a corresponding Anformung 55 to the inner wall of the injection mold used for the production of the slide-2

AT 412 433 B det. The production process of the slider is therefore - apart from the once necessary preparation of the tool-Anformung - not adversely affected. The further necessary rocker with the pin set on it is a particularly simple in terms of its shape and therefore easy to manufacture component. 5 The bistable switching behavior of the Femschalters invention can be converted in a particularly simple manner in a monostable by the rocker is omitted. If both bistable and monostable remote switches are to be produced, then all the components of both product types can be produced identically, ie with the same tools and therefore particularly cost-effectively. Only when assembling a distinction between io bistable and monostable remote control by installation or omission of the rocker is to be made.

Furthermore, it may be necessary to provide an excitation coil with a different number of turns: impulse switches are applied only short voltage pulses, which is why their coils are formed with relatively high power in order to generate strong enough magnetic forces with the short voltage pulses for switch operation. Excitation coils 15 of relays, on the other hand, are designed with lower power because they are energized for a long time. The excitation coils can be made equal in spite of different numbers of turns in terms of their geometric dimensions, so that all the other components of the magnet system and the other Femschalter assemblies can be made similar. 20 According to a particularly preferred embodiment of the invention can be provided that the backdrop is formed as heart-shaped. The bistable contact actuation can be achieved particularly reliably with such a backdrop designed.

In a further embodiment of the invention it can be provided that the slide has a running in the direction of the slider tip, adjoining, V-shaped each other 25 and separated by an approximately V-shaped system separate straight sections and two bends, to the straight Connect sections and join each other in the area above the V-shaped system. In such a designed backdrop, the pin can slide without any tilting, which leads to a high reliability of the Femschalters. 30 has proven to be particularly favorable to provide a rocker in the direction of one of the two wings of the backdrop biasing spring, because thus the career of the pin can be reliably specified within the backdrop.

In this context, it can be provided that the spring is designed as a helical compression spring, which is supported at one end on the inner wall of the lower shell of the Femschalter-35 housing and the other on the rocker. Such springs are functionally reliable standard components that do not require their own production steps, whereby their use keeps the technical production cost of Femschalters invention low. Furthermore, sufficient forces can be generated with such helical compression springs for the local application. In a further development of the invention may be provided in this connection, that on the rocker and on the lower shell peg-shaped projections are provided, on which the ends of the spring are attached. A lateral deflection of the spring, which can lead to impairment of the proper function of the Femschalters is thus effectively avoided. Furthermore, it can be provided that the bottom of one of the straight sections of the gate is provided with a ramp which starts in the area adjoining the bend, rises in the direction of the tip and ends with an edge which is flush with the area in the region of the other straight section lying edge of the V-shaped system runs. This ensures that the pin can not run in spite of its bias in the ramp provided with this straight section of the so backdrop, but passes into the other straight section of the scenery. It is thus the path of the passage of the scenery mandatory, so that the exact shape of the backdrop adapted to this only possible passage way, in particular particularly low friction or tilting can be applied.

According to a particularly preferred embodiment of the invention, provision can be made for the return spring to be designed as a helical compression spring which, with its first end, points to FIG

AT 412 433 B a part of the housing, preferably an intermediate shell, supported and abuts the other end of the slider. Such springs are functionally reliable standard components that do not require their own production steps, whereby their use keeps the technical production cost of the remote switch according to the invention low. Furthermore, sufficient forces can be generated with such screw-5 compression springs for the local application.

In this context, arranged on slide and housing peg-shaped projections may be provided, on which the ends of the return spring are attached. A lateral deflection of the spring, which can lead to impairment of the proper operation of the remote switch is thus effectively avoided, io In development of the invention can be provided that the rocker has two cylindrical projections which eingrei in incorporated into the housing of the Femschalters indentations -fen, these indentations have slightly larger diameter than the projections. This type of storage can be easily made and has a contributing to the trouble-free operation of the remote switch, particularly low friction. According to a preferred embodiment of the invention it can be provided that the indentations have slot-shaped form and are incorporated in the intermediate shell facing end faces of spaced apart platelets, which are integrally formed on the inner wall of the lower shell and that to the intermediate shell spaced apart platelets are integrally formed, wherein the platelets of the lower and the intermediate shell are aligned in alignment with the lower shell 20 placed intermediate shell. In such configured indentations, the rocker can be used very easily, so that the necessary for assembling the remote switch invention technical effort can be kept very low.

Another object of the present invention is to provide an electromechanical remote switch, of a type defined in more detail below, which switch is characterized by a particularly simple mountability. Furthermore, the remote switch to be specified is to be able to be converted from its basic embodiment comprising two simultaneously operated switching sections into a switch switch having only one switching path.

The remote switch to be specified has two switching paths, each of which comprises at least one fixed contact and a movable contact cooperating therewith, wherein the movable contacts of the two switching sections are arranged on a common slider and movable therefrom with respect to the fixed contacts. The Femschalter further comprises a magnet system with an excitation coil and a movable armature of this, which is coupled to the slider, which slide is pressed by a return spring in the direction of a first switching position 35, wherein the slide in the region of the movable contacts two, through a slot having separate arms and each arm carries at least one movable contact piece in each case a switching path.

To solve the above-mentioned further object, the invention provides that at least a portion of the first arm, preferably the entire first arm, is formed as a separate from the rest of the slide 40, the remaining slide festlegbarer component. This makes it possible to first insert the slide without the first arm in the lower shell of the housing during assembly of the remote switch and then the intermediate shell, which separates the two switching sections from each other and passes through the slot between the two arms through, set. Finally, the first arm can be fixed to the rest of the slide. As a result, a tedious threading of the intermediate shell in the slot between the arms, as it is necessary in previously known one-piece design of the first arm with the rest of slide, omitted.

Furthermore, by simply omitting the first arm and the electrically conductive components of the switching path associated with this first arm, a single-pole, only one switching path so having remote switch can be realized. If both bipolar and unipolar Femschalter are to be produced, then all components, in particular the housing, the magnet system and the slider of both product types similar, ie with the same tools and therefore made particularly inexpensive. Only when assembling a distinction between single-pole and two-pole Femschaltem by installing the harvested 55 arm and the electrical components of the first switching path to make. 4

AT 412 433 B

In a further embodiment of the invention can be provided that in the first, as the rest of the slide separately formed arm a dovetail groove is incorporated, with which the first arm can be placed on a corresponding, integrally formed on the other slide guide. Thus, the first arm can be particularly easily and reliably as well as without any 5 auxiliary materials, such as. Adhesive, to be fixed on the remaining slide.

A further object of the present invention is to provide an electromechanical remote switch of the kind defined in more detail below, in which the movable contact (s) are lifted off from them in a particularly reliable manner, in particular even if they are slightly welded to the stationary contacts, io The remote switch to be specified has at least one fixed contact and a movable contact cooperating therewith, which is arranged on a slider and movable therefrom relative to the fixed contact, and a magnet system having an exciter coil and an armature movable therefrom, which is coupled to the slider, which slider is pressed by means of a return spring in the direction of a first switching position, wherein the slide for holding the at least one movable contact has a cage consisting of two, in the direction of displacement of the slider side walls and connecting them coverpla is formed and arranged at least one movable contact on an approximately rectangular plate, which platelet is received between the side walls of the cage and pressed by means of a disposed within the cage compression spring against one of the 20 cover plates.

To achieve the above object, the invention provides that the inner surfaces of the cage side walls are parallel to each other and inclined at an acute angle to the direction of displacement of the slider. In a movement of the slider, which leads to a lifting of a movable contact from its associated fixed contact, first slide the inner surfaces of the cage side walls along the movable contact bearing plate along and move it normal to the direction of displacement of the slider. In this case, the movable contact is moved laterally relative to the fixed contact, with any welding of these two contacts are torn open.

It has proven to be beneficial that the size of the acute angle is in the range between 3 30 and 5 °, because so far just discussed tearing of contact welds sufficiently wide displacements of the contacts can be achieved, but at the same time the ease of relative movement between the slide and the movable contacts carrying the plate is not significantly affected.

In a further development of the invention can be provided that the compression spring is designed as a screw-35 spring, which is supported with its one end on the plate and with its other end to one of the cover plates of the cage. Such springs are functionally reliable standard components that do not require their own production steps, whereby their use keeps the technical Herstellungsaulwand the Femschalters invention low. Furthermore, sufficient forces can be generated with such helical compression springs for the local application.

In this context, according to a preferred embodiment of the invention, on the plate and on one of the cover plates of the cage arranged, preferably dome-shaped projections may be provided, on which the ends of the compression spring are attached. A lateral deflection of the spring, which can lead to impairment of the proper function 45 of the Femschalters is thus effectively avoided.

Another object of the present invention is to provide an electromechanical remote switch hereinafter defined type, in which the magnet system in each position of its armature high forces can be exerted on the armature.

The Femschalter to be specified has at least one fixed contact and a cooperating with the-50 sem movable contact, which is arranged on a slider and movable therefrom with respect to the fixed contact and a magnet system with an excitation coil and a movable armature of this, with the slider is coupled, which slider is pressed by means of a return spring in the direction of a first switching position, wherein in the interior of the excitation coil, a magnetic core is arranged, which is in good magnetic good connection 55 with a running approximately parallel to the coil longitudinal axis yoke, on the stim 5

AT 412 433 B

Side of which yoke, the armature is pivotally mounted in the region of its first end face.

To achieve the above object, the invention provides that on the side surfaces of the yoke anchor bearing plates are set, which protrude beyond the end face of the yoke and the section of the anchor lying there. About this anchor bearing plates can form independently 5 of the position of the armature magnetic flux with a relatively high strength, whereby high forces can be exerted on him regardless of the position of the armature. This results in a high functional reliability of the magnet system and thus of the entire remote switch.

The invention will be described in more detail with reference to the accompanying drawings, in which particularly preferred embodiments are shown. 10 shows FIGS. 1 and 2 each an electromagnetic remote switch according to the invention comprising two switching sections with the upper shell removed in an oblique view, wherein one movable contact 2 is provided per switching path and its connection to a rigid busbar 5 is implemented differently;

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

4 shows the magnet system 8 of a Femschalters invention with the slider 7 in an oblique view;

Fig.5 shown in Figure 4, wherein in addition the rocker 17 is shown; Fig.6 shows the slide 7 with the rocker 17 in 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 shows that the slider 7 is in its second switching position and FIG. 9 shows an alternative embodiment of the heart-shaped connecting link 15 inserted in the slider 7.

An inventive electromechanical remote switch includes as well as already known such switching devices at least one switching path. Each switching path has at least one stationary contact 1 and at least one movable contact 2. These two contacts 1,2,3 cooperate insofar as they allow the opening and closing of a circuit connected to them.

As shown in Figure 1, the fixed contact 1 is fixed on a busbar 3, which opens with its end portion 3 'in a known per se, not shown in the accompanying drawing figures terminal. The movable contact 2 is connected via a movable conductor cable 4 to a further busbar 5 whose end section 5 'terminates in a second terminal, also not shown. Instead of the conductor cable 4 can also be provided with a small thickness and thus elastic busbar S9 be provided (see Fig. Figure 2). The movable contacts 2 are each arranged on a "slide 7 and movable from the latter relative to the stationary contact 1. About said terminals 40 is a circuit to be connected to the invention 'Femschalter connected to this. The remote switch according to the invention is "inbaubar executed in a cabinet, including its housing in a conventional manner, a lower shell 23 and a aufsetzba-re upper shell (not shown in the accompanying drawings) includes.

The remote switch according to the invention is formed as shown in the accompanying drawings, preferably comprising two "switching sections" operable simultaneously by a single slider 7. In order to electrically isolate these two switching paths from one another, the housing further has an intermediate shell 21 which lies between the upper and lower shell 23. All the details described below as being inventive are fully applicable also to the embodiment of the switching path according to FIG. 1 or FIG. 2, notwithstanding the fact that they will be discussed below with reference to the preferred embodiment of a switching path illustrated in FIG.

The switching path of Figure 3, in contrast to the above two embodiments, two fixed contacts 1, which are set at a small distance from each other and each on a rigid bus bar 3,5 3.5. There are two movable contacts 2 provided on a 6

AT 412 433 B electrically conductive plate 6 are fixed, wherein the distance between these movable contacts 2 that of the fixed contacts 1 corresponds.

The plate 6 is on a slider 7 - arranged in the manner described in more detail below - arranged, whereby the slide 7 is also in operative connection with the two movable contacts 2 s and these can move relative to the fixed contacts 1. To drive the slider 7, a magnet system S is provided. In order to operate the slide 7 by hand, an operating knob 36 is disposed at its upper end, which protrudes through an opening of the lower shell 23.

In the embodiment shown in the accompanying drawings, a magnetic core 11 is arranged in the interior of the excitation coil 9, which is in good magnetically conductive connection with a running approximately parallel to the coil longitudinal axis yoke 12 , At the end face 61 of this yoke 12, the armature 10, designed as a flat plate, is pivotably mounted in the region of its first end face and thus designed as a hinged armature (see FIG. This storage is realized 15 so that the armature 10 is placed with an edge of its end face on the yoke front side 61. At the yoke 12, a resilient metal strip 62 is fixed, which projects beyond the yoke end face 61 and has a bent over in the direction of the armature 10 section 63, with which it engages over the armature 10. With this section 63 of the resilient sheet metal strip 62 acts simultaneously as an anchor spring. With the region of its second end face, the armature 10 protrudes into a slot-shaped recess 13 of the slide 7 and is coupled in this way to the slide 7. The slider 7 is slidably mounted in the direction of the arrow symbolized displacement direction 14 in the housing of the Fem switch and movable in this direction of displacement 14 from the armature 10.

A special feature of this magnet system 8 are the anchor bearing plates 60, which are fixed to the 25 side surfaces of the yoke 12. They are the end face 61 of the yoke 12 and formed in the region of this end face 61 portion of the armature 10 outstanding. About this anchor bearing plates 60 can always, especially when the armature 10 is in its position shown in Figure 4,5, lifted from the magnetic core 11, a relatively large magnetic flux flow. In this way, a relatively large magnetic force can always be exerted on the armature 10, which leads to a high functional reliability of the magnet system 8.

On the slider 7 further acts a return spring 20, which presses the slider 7 in the first switching position shown in Figure 3. This return spring 20 is designed as a helical compression spring which is supported with its first end on a part of the housing, preferably the intermediate shell 21, which separates the two switching sections from each other, and the other end res on the slider 7 rests. In order to ensure a stable fixing of the return spring 20 on the slide 7 and the housing (on the intermediate shell 21), in the areas of slide 7 and housing, on which abut the ends of the return spring 20, peg-shaped projections 22 are provided on which the ends of the Return spring 20 are attached (see Fig.7 for the housing, ie, fixed to the intermediate shell 21 Anformung 22). When voltage is applied to the exciter coil 9, a magnetic force is exerted on the armature 10 which is greater than the force generated by the return spring 20, so that the slider 7 can be displaced against the return spring 20.

It also falls within the scope of the subject invention and in the scope of the appended claims to constructively construct the magnet system differently, for example in the form that the movable from the excitation coil 9 armature 10 as formed in the interior of the bobbin of the excitation coil 9 slidably mounted bolt is, as provided for example in Schlagankerauslösem of circuit breaker.

In a remote switch comprising the components discussed so far, the at least one, interacting with the at least one fixed contact 1 contact 2 monostable so movable because the return spring 20 the slider 7 - and with him the at least one movable contact 2 - in the direction of the first switching position suppressed.

To give the Femschalter bistable switching behavior, ie a bistable contact actuation, a gate 15 is incorporated into the surface of the slide 7. This is preferably as shown in the accompanying drawings, designed as heart-shaped, but can -55 as discussed following the discussion of the operation of this approximately heart-shaped backdrop

AT 412 433 B will also have a different shape.

In this backdrop 15 engages a pin 16 which is fixed on a rocker 17. This rocker 17 is mounted parallel to the slide 15 having slide surface pivotally mounted in the housing of the remote switch. 5 This storage is realized by means of two cylindrical projections 18 on the rocker 17, which engage in indentations 19 which are incorporated in the housing. In Figure 5, one of these projections 18 can be seen, the second lies on the non-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 18, whereby the Rocker 17 10 also slightly normal to the direction of displacement 14 can be pivoted.

The indentations 19 are preferably not formed as fully cylindrical, mutually aligned and at a distance from the thickness of the rocker 17 holes, because the incorporation of the rocker 17 would be difficult in such holes. As can be seen in Figure 7, the indentations 19 are incorporated into the lower shell 23 and have a slot-like shape. Preferably, these 15 indentations have 19 semi-cylindrical bottoms, whose diameter is slightly larger than that of the projections 18th

To the inner wall of the lower shell 23, two plates 24 are formed, in which the intermediate shell 21 facing end faces in each case such a recess 19 is incorporated. The distance between these two plates 24 corresponds to the thickness of the rocker 17 in the region of its 20 projections 18. The rocker 17 is inserted into the space between the plates 24, wherein the projections 18 come to rest in the recesses 19.

To the intermediate shell 21 also spaced apart plates 24 'are integrally formed. The plates 24, 24 'are arranged so that they are aligned with each other when placing the intermediate shell 21 on the lower shell 23 and come to lie with their end faces successive or only 25 slightly spaced from each other. The indentations 19 of the platelets 24 arranged in the lower shell 21 are thereby closed by the platelets 24 'of the intermediate shell 23 and the moldings 18 are enclosed in the indentations 19.

The heart-shaped gate 15 preferably has the asymmetrical shape shown in FIGS. 1-8. This comprises a running in the direction of displacement 14 of the slider 7 tip 70 30 and straight portions 25, 29, which are then arranged on this tip 70 {see. Figure 6). The straight sections 25,29 are V-shaped to each other and separated by an approximately V-shaped system 27 from each other. At each of these straight portions 25, 29, a curvature 26,28 connects, which open two curvatures 26,28 in the area above the V-shaped system 27 into each other. The heart-shaped gate 15 and the pin 16 arranged on the rocker 17 form a locking device which functions as follows:

In the state of the Femschalters shown in Figure 3, 5 and 6, the pin 16 is in the top 24 of the heart-shaped gate 15. The recognizable in Figure 3 switching path of Femschalters is turned off because the movable contacts 2 lifted from the fixed contacts 1 40 are.

When the exciting coil 9 is energized in this situation, the slider 7 is displaced downwardly (direction indicated with reference to the position of the "remote switch" shown in FIG. 3). During this movement, the pin 16 first passes through the extending in the direction of displacement 14 tip 70 and subsequently the right-hand straight portion 25 of the link 15. The 45 adjoining this straight portion 25 curvature 26 leads the pin 16 on the approximately V-shaped system 27, where it is shown schematically in Figure 6 with a continuous line. During this passage of the pin 16 through the gate 15, the rocker 17 is slightly first in a clockwise direction (until the pin 16 has reached the curvature 26) and then pivoted counterclockwise. Thus, when the exciting coil 9 is de-energized, the return spring 20 can push the slider 7 upwards. The approximately V-shaped system 27 is displaced in the direction of the pin 16 until it 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 Figure 8, in which the movable contacts 2 of the visible in Figure 3.8 55 contact gap still on the fixed contacts 1 and this switching contact

AT 412 433 B is thus closed. This second switching position is thus a stable (stable) switching position even when no voltage of the excitation coil 9.

A movement of the slide 7 back into the switching position shown in Figure 3 can be done by another, applied to the excitation coil 9 voltage pulse: The slider 7 is 5 moves by such another voltage pulse back down, whereby the pin 16 in the curvature 28th the left wing of the heart-shaped gate 15 is moved (see dotted representation of the pin 16 in Figure 6). After the voltage pulse has subsided, the return spring 20 can move the slider 7 upwards, wherein the pin 16 passes over the left straight portion 29 back into the top 70 of the link 15. The slider 7 is now again movable into the switching position shown in io Fig.3, in which the visible in Figure 3 switching path is open.

The remote switch according to the invention can also be operated manually deviating from the previous versions, including the slide 7 - as already explained above - is provided with a projecting through an opening of the lower shell 23 actuator button 36. The 15 formed from pin 16 and gate 15 locking mechanism works in manual slide operation but completely similar.

Thus, the pin 16 always takes the just discussed, counterclockwise path through the gate 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 gate 15. In the context of this description and the attached claims, 20 "wings of the link 15" are to be understood in each case as the entirety of a straight section 25 or 29 and the bend 26 or 28 adjoining it. The bias of the rocker 17 in the direction of the left Kulis sen wing is to be understood by way of example, it would be completely equivalent to bias the rocker 17 in the direction of the right gate wing, of course, the backdrop 15 to their direction in Verschieberich-direction 14 extending Axis mirrored would have to be performed.

This spring 30 is formed in the preferred embodiment of the accompanying drawings as a helical compression spring, which is supported at one end on the inner wall of the lower shell 23 and the other end on the rocker 17. For stable fixing of the spring 30 may be provided analogous to the return spring 20 both on the rocker 17 and on the lower shell 23 zapfenförmi-30 ge projections 37 on which the ends of the spring 30 are attached.

The force exerted by this spring 30 on the rocker 17 ensures that the pin 16 is always pressed in the direction of the left wing of the link 15 and thus occupies the positions shown in solid, dash-dotted and dotted lines.

It would be possible to do without this spring 30 if its function (rocker 17 in the direction of lin-35 ken wings of the link 15 press) is reached elsewhere. This can be done, for example, that the rocker 17 is arranged inclined slightly inclined in the direction of the left gate wing, whereby the provided with the pin 16 end of the rocker 17 is urged by gravity in the direction of the left gate wing.

In order to prevent the pin 16 after leaving the tip 70 in the left straight Ab-40 section 29 enters, the bottom of this straight portion 29 is provided with a ramp 31 which begins in the adjoining the bend 28 area and in the direction of Peak 70 rises. The ramp 31 terminates with an edge 33 which is aligned with the lying in the region of the straight portion 25 edge 32 of the V-shaped system 27. The foot-side end of the pin 16 slides on leaving the tip 24 along this edge 33 and thus can not enter the left 45 straight section 29, but must run along the edge 32 of the V-shaped system 27 in the right straight section 25.

When the rocker 17 is biased in the direction of the right gate wing, the just discussed ramp 31 in the right straight portion 25 of the gate 15 must be arranged.

An alternative, likewise conceivable constructional embodiment of the heart-shaped gate 15 lies in forming it completely symmetrically, ie with identical left and right wings (see FIG. The pin 16 comes here after leaving the tip 70 with the cutting edge 34 of the V-shaped projection 27 into contact and will then be randomly directed into the right 25 or left straight section 29. After the pin 16 has been deflected by the curvature 26 or 28, it comes to rest after the decay of the voltage applied to the exciting coil 9 voltage pulse 55 in the position shown in phantom below the cutting edge 35. In case of a new 9

AT 41 2 433 B chen displacement of the slide 7, the pin 16 comes into contact with this cutting edge 35 and is guided again depending on the chance in the right 26 or in the left bend 28. In either case, the pin 16 ultimately returns to the tip 70.

From the explanation of the function of the gate 15 it is clear that this may also have a deviating from the 5 heart shape, provided that in this shape, the pin 16 are stably stored in two spaced Halterastpunkten and the slide 15 the pin 16 friction between them can lead displaceably two Halterastpunkten points. For example, it would be conceivable, based on the embodiment of FIG. 9, to realize the link 15 in a half heart shape, that is to say comprising only one of the two wings. The shape of this wing could deviate from the half heart shape and approximately in shape according to another conceivable embodiment variant be formed half a ellipse.

The invention is thus not limited to the illustrated in the drawings, as heart-shaped design of the gate 15.

The remote switch according to the invention can be designed to include any number of switching paths 15, wherein in the accompanying drawings, only a two-way switch comprehensive remote switch is shown. In FIGS. 1-3, only one switching path is provided in each case, which is arranged in the region between the intermediate shell 21 and the upper shell of the remote switch housing. The second switching path is between the intermediate shell 21 and the lower shell 23 and is the same as the first, in FIGS. 1-3 20 visible switching path constructed in terms of the design principle.

It can be provided that this second switching path is constructed with a different switching function than the first switching path. This is to be understood that when the first switching path has normally open function (switching path is open in the first, shown in FIGS. 1-3 switching position and closed in the second, shown in Fig. 8 switching position), the second 25 switching path with üffnerfunktion is constructed so that it is closed in the first Schaltsteliung (Fig. 1-3), in the second switching position (Fig.8), however, is open.

However, the functions of the two switching paths are arbitrary or freely combinable with each other. Thus, for example, both switching paths can be designed as normally open or both as normally closed, or one or both switching paths can be designed as changeover contacts. 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 arranged on a single, common slider 7 and movable from this relative to the fixed contacts 1.

As best seen in Figure 4, the slider 7 in the region of the movable contacts 2, two, separated by a slot 40 arms 41,42. On these two arms 35 41,42, the movable contact pieces 2 of the Femschalters are arranged, each arm 41,42 carries the only movable contact piece 2 or the two movable contact pieces 2 each have a switching path. When fully assembled housing of Femschalters the wall 45 of the intermediate shell 21 is in the region of the slot 40. Each of the two arms 41,42 thus protrudes into the associated switching path and is in the range of the movable Kontak 40 tes 2 of the other switching path through the wall 45 of the intermediate shell 21 is separated.

A peculiarity of the measures provided for in a remote switch according to the invention slide 7 is that the entire first arm 41 designed as a separate member from the rest of slide 7, but on the remaining slide 7 can be fixed. This fixability can in principle be realized arbitrarily, for example, the arm 41 could be glued to the remaining slide 7. 45 According to the preferred embodiment shown in the accompanying drawings, 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 the region of the remaining slider 7, in which the arm 41 is to be determined, a guide 44 is formed, which coincides in terms of their cross-sectional shape with that of the groove 43 and is slightly less than 50 g performed. The arm 41 can be placed on this guide 44 and thus positively fixed on the remaining slide 7.

The shape of the cross section of groove 43 and guide 44 can be chosen arbitrarily and be, for example, the hammer shape shown in the drawings. Alternatively, groove 43 and guide 44 could have a trapezoidal cross-section, wherein the longer parallel to each other 55 extending side edges of this trapezium in the region of the bottom of the groove 43 and the 10 r

Kor 412 433 B corresponding surface of Anformung 44 must be in order to achieve a positive connection of arm 41 and remaining slide 7.

As can be seen from Figure 7, when assembling the remote switch, the slider 7 can first be inserted into the lower shell 23, then the intermediate shell 21 are placed 5 and then the arm 41 are attached to the remaining slide 7. Tedious threading the slide arms 41 and 42 in the areas between the lower shell 23 and intermediate shell 21 and between the upper shell and intermediate shell 21 can thus be avoided.

In order to achieve this simple mountability of the slide 7 in Femschalter housing, can be provided deviating from the previous presentation that not the entire arm 41, 10 but only a portion of the arm 41, namely the lower, the movable contact 2-bearing portion, is formed as the remaining slide 7 separate component. The other portion of the arm 41 is made in one piece with the slider 7. It should be noted, however, that the other, with the slider 7 integrally running arm section ends in the first switching position (Figure 3) slide 7 still above the wall 45, so is the wall 45 of the intermediate shell 21 during assembly of the remote switch must not be threaded into the slot 40 between the two arms 41,42.

Another aspect of the invention lies in the structural design of the holder of the movable contacts 2 on the slider 7. As is apparent from Fig.6, the slider 7 for holding the movable contacts 2 a switching path to a cage 50 on. Since the remote switch shown in the drawing 20 comprises two switching paths whose movable contacts 2 are arranged on two arms 41, 42 as described above, each of these arms 41, 42 is 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. The one movable contact 2 25 (see Fig. 1,2) or the two movable contacts 2 (see Fig.3) is or are arranged on an approximately rectangular plate 6, which platelet 6 between the side walls 51,52 of the cage 50 is received. Within the cage 50, 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 dependent on which switching function (normally open or normally closed) the switching path concerned is to fulfill. If the switching path as illustrated in FIG. 3 is designed as a make contact, with the fixed contacts 1 being arranged below the lower cover surface 54, the plate 6 is pressed against the lower cover surface 54. At a leading to close this switching path movement of the slide 7, the movable contacts 2 come to the fixed contacts 1 to 35 conditioning. Because of this concern, the plate 6 can not be further displaced with further progressive displacement of the slide 7, but it is the compression spring 55 is compressed. The contact pressure with which the movable contacts 2 are pressed against the stationary contacts 1 is increased by the compression of the compression spring 55.

When the switching path is designed as a normally closed contact, the fixed contacts 1 lie above the upper cover surface 53 of the cage 50, for which reason the plate 6 is pressed against this upper cover surface 53 (compare the first arm 41 on the left in FIG.

The compression spring 55 is preferably formed as a helical compression spring, which is supported at one end to the plate 6 and at its other end to one of the cover plates 53,54 of the cage 50. Alternatively, the compression spring 55 could be formed, for example, as a leaf spring 45.

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

The inner surfaces 57,58 of the cage side walls 51,52 parallel to each other and at 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 rest on the fixed contacts 1 associated therewith, the plates 6 carrying these movable contacts 2 are of the 11th

Claims (18)

AT 412 433 B deck surface 53,54 of the cage 50, on which it can come to rest, lifted and the compression spring 55 compressed accordingly. During a displacement of the slide 7, which leads to a lifting of the movable contacts 2 from their associated fixed contacts 1, the movable contacts 5 2 are initially not lifted from the fixed contacts 1: The plate 6 and with him the movable contacts 2 are rather, pressed by the compression spring 55 against the fixed contacts 1, wherein the progressive displacement of the slider 7, the compression spring 55 is relaxed. Only when one of the cover plates 53,54 of the cage 50 comes to rest on the plate 6, this is moved and the movable contacts 2 are lifted from the fixed contacts 1 io. During the displacement of the cage 50 relative to the plate 6, which takes place prior to this lifting off, the inner surfaces 57, 58 of the cage side walls 51, 52 slide along the plate 6. Due to the inclination of the inner surfaces 57,58 relative to the displacement direction 14 of the slider 7, the plate 6 is displaced normal to the direction of displacement 14. The movable contacts 2 15 are thereby moved parallel to the surfaces with which they rest on the fixed contacts 1. In this lateral, normal to the direction 14 and the lifting movement relative movement of the movable 2 relative to the fixed contacts 1 slight welds between the contacts 1.2 are torn open. With a displacement of the slider 7, which leads to an application of the movable contacts 20 2 to the associated fixed contacts 1, are - as already explained above - initially the movable contacts 2 applied to the fixed contacts 1 and further progressive displacement of the slider 7 compresses the pressure spring 55 acting on the plate 6. Also during this compression, the inner surfaces 57,58 slide along the plate 6, which causes a normal to the displacement direction 14 extending displacement of the movable 25 contacts 2. Since the movable contacts 2 already bear against the fixed contacts 1, the movable contacts 2 are rubbed against the fixed contacts 1, which has a cleaning of the contact surfaces of both contacts 1.2 result. This contributes to achieving a low contact resistance or to maintaining this low resistance over the period of use of the Femschalters. 1. An electromechanical remote switch comprising at least one stationary contact <1) and a monostable mobile contact (2) cooperating therewith and arranged on a slide (7) and opposite the stationary contact (2). is movable and a magnet system (8) with an exciter coil (9) and a movable armature of this (10) which is coupled to the slide (7), which slide (7) by means of a return spring (20) in the direction of a first ' Switching position is pressed, characterized in that for bistable contact actuation in the surface of the slide (7) a link (15) incorporated and in this gate (15) engaging pin (16) is provided which is fixed on a rocker (17) which is mounted pivotably parallel to the gate (15) having slide surface. 2. Electromechanical remote switch according to claim 1, characterized in that the link (15) is formed approximately heart-shaped. 3. Electromechanical remote switch according to claim 2, characterized in that the slide (15) in the direction of displacement (14) of the slide (7) extending tip <24), adjoining, V-shaped and arranged by an approximately V-shaped Appendix (27) have separate straight portions <25.29) and two curves (26,28), which connect to the straight sections (25,28) and in the area above the V-shaped system (27) open into each other. 4. Electromechanical remote switch according to claim 2 or 3, characterized by a rocker (17) in the direction of one of the two wings of the scenery <15) biasing "spring (30). 5. Electromechanical remote switch according to claim 4, characterized in that the 12 55 5 10 15 20 25 30 35 40 45 50 AT 412 433 B spring (30) is designed as a helical compression spring, which at one end on the inner wall of the lower shell (23) of the Remote switch housing and at the other end on the rocker (17) is supported. 6. Electromechanical remote switch according to claim 5, characterized in that on the rocker (17) and on the lower shell (23) peg-shaped projections (37) are provided, on which the ends of the spring (30) are plugged. 7. Electromechanical remote switch according to one of claims 2 to 6, characterized in that the bottom of one of the straight sections (25 or 29) of the link (15) with a ramp (31) is provided, which in the curvature (26 and 28) begins, rises in the direction of the tip 70 and ends with an edge (33) which is aligned with the edge (32) of the V-shaped attachment (27) located in the region of the other straight portion (29 or 25). runs. 8. Electromechanical remote switch according to one of the preceding claims, characterized in that the return spring (20) is designed as a helical compression spring, with its first end on a part of the housing, preferably an intermediate shell (21), supported and the other end on the slide (7) is present. 9. Electromechanical remote switch according to claim 8, characterized by slide (7) and housing arranged peg-shaped projections (22) on which the ends of the return spring (20) are plugged. 10. Electromechanical remote switch according to one of the preceding claims, characterized in that the rocker (17) has two cylindrical projections (18) which engage in incorporated into the housing of the remote switch indentations (19), said indentations (19) of slightly larger diameter as the projections (18) have. 11. Electromechanical remote switch according to claim 10, characterized in that the recesses (19) have slot-shaped and are incorporated in the intermediate shell (21) facing end faces of spaced apart plates (24) formed on the inner wall of the lower shell (23) and that on the intermediate shell (21) spaced apart plates (24 ') are integrally formed, wherein the platelets (24,24') of the lower and the intermediate shell (23,21) on the lower shell (23) attached intermediate shell (21st ) are aligned with each other. 12. Electromechanical remote switch with two switching paths, each of which comprises at least one fixed contact (1) and a cooperating with this movable contact (2), wherein the movable contacts (2) of the two switching paths on a common slide (7) and arranged from this opposite the fixed contacts (1) are movable, which Femschalter further comprises a magnet system (8) with an excitation coil (9) and a movable armature of this (10) which is coupled to the slide (7), which slide ( 7) by means of a return spring (20) is pressed in the direction of a first switching position, wherein the slide (7) in the region of the movable contacts (2) has two, by a slot (40) separated arms (41,42) and each arm (41,42) carrying at least one movable contact piece (2) in each case a switching path, characterized in that at least a portion of the first arm (41), preferably the entire e rste arm (41), as the rest of the slide (7) separate, on the remaining slide (7) fixable component is formed. 13. Electromechanical remote switch according to claim 12, characterized in that in the first, as the rest of the slide (7) separately formed arm (41) a scarf-benschwanzförmige groove (43) is incorporated, with which the first arm (41) on a corresponding, on the other slide (7) integrally formed guide (44) can be placed. 14. Electromechanical remote switch comprising at least one fixed contact (1) and a cooperating with this movable contact (2), which is arranged on a slide (7) and from this relative to the fixed contact (1) is movable and a magnet system (8) an excitation coil (9) and an armature (10) movable therefrom, which is coupled to the slide (7), which slide (7) is pressed by means of a restoring spring (20) in the direction of a first switching position, wherein the slide (7) for holding the at least one movable contact (2) has a cage (50) consisting of two side walls (51, 52) extending in the displacement direction (14) of the slide (7) and also connecting cover plates (53 , 54) is formed and the at least one movable contact (2) on an approximately rectangular plate (6) is arranged, which platelets (6) between the side walls (51,52) of the cage (50) 5-men and received by ei ner within the cage (50) arranged compression spring (55) against one of the cover plates (53,54) is pressed, characterized in that the inner surfaces of the cage side walls (51,52) parallel to each other and at an acute angle (a) inclined to the displacement direction (14) of the slide (7). 15. Electromechanical remote switch according to claim 14, characterized in that the io size of the angle (a) is in the range between 3 and 5 °. 16. Electromechanical remote switch according to claim 14 or 15, characterized in that the compression spring (55) is designed as a helical compression spring, with its 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. 17. Electromechanical remote switch according to claim 16, characterized by the platelets Chen (6) and on one of the cover plates (53,54) of the cage (50) arranged, preferably dome-shaped projections (56) on which the ends of the compression spring (55) attached are. 18. Electromechanical remote switch comprising at least one fixed contact (1) and a cooperating with this movable contact (2) arranged on a slide over (7) and from this relative to the fixed contact (2) is movable and 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 by means of a return spring (20) in the direction of a first switching position, inside 25 the exciter coil (9) a magnetic core (11) is arranged in a magnetically good conductive connection with a running approximately parallel to the coil longitudinal axis yoke (12), at the end face (61) which yoke (12) of the armature (10) in the area its first end face is pivotally mounted, characterized in that on the side surfaces of the yoke (12) anchor bearing plates (60) are fixed, which the end face (61) of the Jo-30 ches (12) and there lie project beyond the section of the armature (10). HIEZU 8 SHEET DRAWINGS 35 40 45 50 14 55