EP1282907B1 - 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 comprising at least one fixed contact and a cooperating with this monostable moving Contact, which is arranged on a slide and from this opposite the fixed Contact is movable, which slider by means of a return spring in the direction of a first Switching position is pressed, wherein the bistable contact actuation in the surface of Slider incorporated a backdrop and provided in this backdrop engaging pin is, which is fixed on a rocker, which is parallel to the scenery having slider surface is mounted pivotably, and wherein the backdrop in the direction of the Slider extending tip, adjoining, V-shaped and arranged Having by about V-shaped system separate from each other straight sections.

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

Bistable remote switches (also referred to as impulse switches), however, two Stably maintain switch positions when their exciter coil is de-energized. Only for Switching from one to the other switching position is a voltage pulse or a Apply current impulse to the exciter coil.

In US-PS-4 404 444 a pressure-switch mechanism is described, which comprises a housing on which electrical connection lugs are fixed. The second essential component of the mechanism is a slide, which is accommodated in the direction of its longitudinal axis displaceable in a recess of the housing. On the side surfaces of this slider carries contact plates, by means of which electrical connections between the terminal lugs can be produced. A coil spring, which surrounds the slider and is supported with its first end to a shoulder of the slider and with its other end on the front side of the housing, biases the slider in the direction away from the housing. In the top of the slide a heart-shaped gate is incorporated (see Fig.2), which cooperates with a double-L-shaped "stop member": The first, upwardly extending leg acts as a pivot and is in a bore of the housing stored.

The second, downwardly extending pin engages the heart-shaped backdrop (see. Figure 4). Through the interaction of the "stop members" with the heart-shaped backdrop takes the slider when actuated, i. when displaced in the direction of its longitudinal axis two stable positions. The switch can be relatively simple to a monostable switch be rebuilt simply by removing the "stop member".

FR-A-2 014 488 discloses an electromagnetic switch having a solenoid, an L-shaped yoke and a hinged armature pivotally mounted thereon. This armature displaces a parallel to the coil longitudinal axis extending and a pin-bearing shift lever. Parallel to the shift lever, a slider is arranged, which presses with its free end on contact springs. In the slider is a recess in the shape of an isosceles triangle, which has a step in the area of his hypotenuse incorporated. The pen engages in this triangle. At the side of the slider facing the solenoid is a latch lever which is pivotally connected to the slider about the axis. This latch lever has at its free end a lying in the region of the triangular recess nose. On the other side of the slider is the other lever, which has an inclined plane in the region of the recess, which projects into the recess. A bistable switching behavior is as follows: When tightening the anchor, the pin comes in the stage to the plant and moves the slider down.

In this case, the nose of the ratchet lever passes under a bobbin arranged on the fixed point and is pivoted due to the bias of the lever by means of the spring behind this fixed point, whereby the slider is hooked in this position. As the armature descends, the pin slides along the lower boundary surface of the inclined plane and ultimately comes to rest in the upper portion of the recess as shown in FIG. Upon renewed tightening of the anchor, the pin slides along the upper boundary surface of the inclined plane, comes in contact with the pawl lever, pivots it, thereby releasing the entanglement of the nose with the fixed point. The slide switch is released and can move up again. The pin comes - as shown in Figure 3 of FR-A1-2 014 488 - ultimately lie back in the stage.

It is an object of the present invention to provide an electromechanical remote switch of specify at the beginning of the type in which a bistable switching behavior with as few and kept simple components can be achieved. Furthermore, this should be bistable Remote switch can be easily converted to a monostable remote switch can.

According to the invention this is achieved in that a magnet system with an excitation coil and one of these movable anchors coupled to the slider, that the Kulisse has two bends, which connect to the straight sections and in the Area above the V-shaped plant open into each other, that the bottom of one of the straight Sections of the scenery is provided with a ramp, which is in the curve the adjacent area begins, rises towards the top and ends with an edge, in alignment with the edge of the V-shaped in the region of the other straight section Plant runs and that one the seesaw in the direction of one of the two wings of the Kulisse biasing spring is provided.

The scenery is part of the already provided slide and thus increases the Component expense of Femschalter not. As the slide mostly as a plastic existing injection molding part is made, the backdrop can very easily by providing a corresponding Anformung to the inner wall of the manufacture of the slide used injection mold can be formed. The making process of the slider is therefore not apart from the once necessary preparation of the Werkzeug-Anformungnicht negatively affected. The further necessary rocker with the pen fixed on it is a particularly simple in terms of its shape and therefore easy to produce Component.

The bistable switching behavior of the remote switch according to the invention can be particularly easy way to be converted into a monostable by omitting the rocker becomes. If both bistable and monostable remote switches are to be manufactured, then all components of both product types similar, ie with the same tools and therefore be made particularly inexpensive.

Only when assembling is a distinction between bistable and monostable Remote switches by installing or omitting the rocker to hit.

Furthermore, it may be necessary to use an exciter coil with a different number of turns Provide: At impulse switch only short voltage pulses are applied, which is why whose coils are designed with relatively high power to work with the short Voltage pulses for switch operation generate sufficiently strong magnetic forces to be able to. Excitation coils of relays, on the other hand, are designed with lower power, because they are energized for a long time.

The excitation coils, despite different numbers of turns in terms of their geometric dimensions are executed the same, so that all others Components of the magnet system and the other remote switch modules similar can be built.

In an inventively designed backdrop of the pin without any tilting Slip, resulting in a high reliability of the Femschalters. By the biasing spring can reliably secure the track of the pin within the scenery be specified. The ramp ensures that the pin despite its bias can not run into the straight section of the scenery provided with this ramp, but got into the other straight section of the scenery. It is thus the way of the Passing through the backdrop mandatory, so that the exact shape of the backdrop to this adapted only possible passage way, in particular particularly low friction or can be created without jamming.

According to a particularly preferred embodiment of the invention can be provided that the backdrop is designed as heart-shaped.

The bistable contact operation can be particularly with such a backdrop designed be achieved reliably.

In continuation of the invention can be provided that the spring as a helical compression spring is formed, which at one end on the inner wall of the lower shell of the remote switch housing and at the other end supported on the rocker.

Such springs are functionally reliable standard components, none of their own Manufacturing steps require, whereby their use the technical Manufacturing costs of the remote switch according to the invention keeps low. Furthermore you can with such helical compression springs for the local application generates sufficient forces become.

In a further development of the invention may be provided in this context that at the Rocker and on the lower shell peg-shaped projections are provided, to which the Ends of the spring are attached.

A lateral deflection of the spring, which until the impairment of the proper Function of Femschalters can be effectively avoided.

According to a particularly preferred embodiment of the invention can be provided that the return spring is designed as a helical compression spring extending with its first end on a part of the housing, preferably an intermediate shell, and supports other end abuts the slider.

Such springs are functionally reliable standard components, none of their own Manufacturing steps require, whereby their use the technical Manufacturing costs of the remote switch according to the invention keeps low. Furthermore you can with such helical compression springs for the local application generates sufficient forces become.

In this context, arranged on slide and housing peg-shaped Be provided projections on which the ends of the return spring are attached.

A lateral deflection of the spring, which until the impairment of the proper Function of the remote switch can be effectively avoided.

In a further development of the invention can be provided that the rocker two cylindrical Having formed in the incorporated into the housing of the Femschalters indentations intervene, these indentations are slightly larger in diameter than the Have moldings.

This type of storage can be easily made and has one to one easy operation of the remote switch contributing, particularly low friction on.

According to a preferred embodiment of the invention can be provided that the Indentations have slot-shaped shape and are incorporated in the Intermediate shell facing end faces of spaced apart plates which are connected to the Inner wall of the lower shell are formed and that to the intermediate shell to each other spaced platelets are formed, wherein the platelets of the lower and the Intermediate shell with attached to the lower shell intermediate shell in alignment with each other are aligned.

In such configured indentations, the rocker can be particularly easy to use, which the necessary for the assembly of the remote switch according to the invention technical Expense can be kept very low.

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 Femschalters 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 Femschalters invention with the slider 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 can be installed in a switch 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 FIG. 1 or FIG. 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 chip 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 Femschalter 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 of 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 Femschalters shown in Figure 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 Femschalters is switched off, since the movable 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 slightly smaller than this is stirred. 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 Femschalters first of 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 Femschalter 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 at an acute angle a inclined to the direction of displacement 14 of the slider 7. The size of this acute angle a 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 compressed 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 (8)

1. An electromechanical remote switch, comprising at least one fixed contact (1) and a monostable movable contact (3) which cooperates with the same and is arranged on a slide (7) and is movable by the same relative to the fixed contact (1), which slide (7) is pressed by means of a restoring spring (20) in the direction of a first switching position, with a link (15) being incorporated in the surface of the slide (7) for the purpose of bistable contact actuation and a pin (16) being provided which engages in said link (15) and is fixed on a rocker (17) which is held in a swivelable manner parallel to the slide surface comprising the link (15), and with the link (15) comprising a tip (24) extending in the direction of displacement (14) of the slide (7) and straight sections (25, 29) which are adjacent thereto and are arranged in a V-like manner with respect to each other and are mutually separated from each other by an approximately V-shaped contact (27), characterized in that a magnetic system (8) with an excitation coil (9) and an armature (10) are provided which is movable by the same and is coupled with the slide (7), that the link (15) comprises two bent parts (26, 28) which are adjacent to the straight sections (25, 28) and converge into each other in the region above the v-shaped contact (27), that the floor of one of the straight sections (25 and 29) of the link (15) is provided with a ramp (31) which starts in the region adjacent to the bent part (26 and 28), rises in the direction of the tip (24) and ends with an edge (32) of the V-shaped contact (27) and that a spring (30) is provided which pretensions the rocker (17) in the direction of one of the two wings of the link (15).
2. An electromechanical remote switch as claimed in claim 1, characterized in that the link (15) is provided with an approximately heart-shaped arrangement.
3. An electromechanical remote switch as claimed in claim 1 or 2, characterized in that the spring (30) is arranged as a helical compression spring which rests at the one end on the inner wall of the lower shell (23) of the remote switch housing and with the other end on the rocker (17).
4. An electromechanical remote switch as claimed in claim 3, characterized in that pin-like shaped parts (37) are provided on the rocker (17) and on the lower shell (23) on which the ends of the spring (30) are inserted.
5. An electromechanical remote switch as claimed in one of the preceding claims, characterized in that the restoring spring (20) is arranged as a helical compression spring which rests with its first end on a part of the housing, preferably an intermediate shell (21), and with its other end on the slide (7).
6. An electromechanical remote switch as claimed in claim 5, characterized by pin-like shaped parts (22) arranged on the slide (7) and the housing, on which the ends of the restoring spring (20) are inserted.
7. An electromechanical remote switch as claimed in one of the preceding claims, characterized in that the rocker (17) comprises two cylindrical shaped parts (18) which engage in recesses (19) incorporated in the housing of the remote switch, with said recesses (19) having a slightly larger diameter than the shaped parts (18).
8. An electromechanical remote switch as claimed in claim 7, characterized in that the recesses (19) have a slot-like shape and are incorporated in the face sides of mutually spaced plates (24), which face sides face the intermediate shell (21), and which plates are formed on the inner wall of the lower shell (23), and that mutually spaced plates (24') are formed on the intermediate shell (21), with the plates (24, 24') of the lower and intermediate shell (23, 21) being mutually in alignment when the lower shell (23) is placed on the intermediate shell (21).

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