WO2001086682A2

WO2001086682A2 - Electromechanical remote switch

Info

Publication number: WO2001086682A2
Application number: PCT/AT2001/000137
Authority: WO
Inventors: Tibor Polgar
Original assignee: Moeller Gebäudeautomation KG
Priority date: 2000-05-11
Filing date: 2001-05-10
Publication date: 2001-11-15
Also published as: CN1227695C; EP1394831B1; PL199094B1; CN1702798A; AU2001258023B2; EE05143B1; CN1702797A; HRP20020891A2; AT412433B; ATE323945T1; DE50109574D1; SK15642002A3; HK1053388A1; EP1394832A2; PL199095B1; EP1394831A2; WO2001086682A8; AU5802301A; NO20025359L; ATA8232000A

Abstract

The invention relates to an electromechanical remote switch, comprising at least one fixed contact (1) and a monostable movable contact (2), co-operating therewith, arranged on a slide (7) and which may be displaced by the above relative to the fixed contact (2). The invention further relates to a magnet system (8) with an energising coil (9) and an armature (10) which may be displaced by the above and which is coupled to the slide (7), said slide (7) being retained in a first switch position by means of a return spring (20). For bistable operation of the contacts a slot (15) is provided in the surface of the slide (7) and a pin (16) engages in said slot (15) and is fixed to a rocker (17), which is pivotably mounted parallel to the slide surface comprising the slot (15).

Description

Electromechanical remote switch

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

Such remote switches can be designed in two different versions, which differ in their switching behavior. On the one hand, monostable remote switches are known which are always held in a first switching position by the return spring and can only assume a second switching position as long as a sufficiently large voltage is present at the excitation coil. Such remote switches are also referred to as relays or contactors. Bistable remote switches (also known as impulse switches), on the other hand, can maintain two switch positions in a stable manner if their excitation coil is de-energized. A voltage pulse or a surge of current is to be applied to the excitation coil only for switching from one to the other switching position.

It is an object of the present invention to provide an electromechanical remote switch of the type mentioned at the beginning, in which a bistable switching behavior can be achieved with as few and simple components as possible. Furthermore, this bistable remote switch should be able to be converted into a monostable remote switch in a particularly simple manner.

According to the invention, this is achieved in that, for bistable contact actuation, a link is incorporated into the surface of the slide and a pin engaging in this link is provided which is fixed on a rocker which is pivotally mounted parallel to the slide surface having the link.

The backdrop is part of the slider, which is provided anyway, and therefore does not increase the complexity of the remote switch. Since the slide is usually manufactured as an injection-molded part made of plastic, the setting can be formed very simply by providing a corresponding molding on the inner wall of the injection mold used to manufacture the slide. The manufacturing process of the slide is therefore not negatively affected, apart from the need to manufacture the mold. The further necessary rocker with the pin fixed on it is a particularly simple in terms of shape and therefore easy to manufacture

Component.

The bistable switching behavior of the remote switch according to the invention can be converted into a monostable in a particularly simple manner by omitting the rocker. If both bistable and monostable remote switches are to be manufactured, then all components of both product types can be manufactured in the same way, i.e. with the same tools and therefore particularly inexpensively.

Only when assembling is there a distinction between bistable and monostable

Remote switches by installing or omitting the rocker.

It may also be necessary to provide an excitation coil with a different number of turns: only short voltage pulses are applied to impulse switches, which is why their coils are designed with relatively high power in order to cope with the short ones

Voltage pulses for switch actuation to be able to generate sufficiently strong magnetic forces. Excitation coils of relays, on the other hand, are designed with lower power because they are exposed to voltage for a longer period of time.

Despite different numbers of turns, the excitation coils can have the same geometrical dimensions, so that all others

Components of the magnet system and the other remote switch assemblies can be constructed in the same way.

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

The bistable contact actuation can be achieved particularly reliably with a backdrop designed in this way.

In a further embodiment of the invention it can be provided that the backdrop is a

Direction of displacement of the slide extending tip, adjoining, V-shaped to each other and separated by an approximately V-shaped system straight

Has sections and two curvatures that connect to the straight sections and open into one another in the area above the V-shaped system.

In a backdrop designed in this way, the pin can slide without any canting, which leads to a high functional reliability of the remote switch.

Providing the rocker in the direction of one of the two has proven to be particularly advantageous

Proof of the wing of the backdrop spring, because it can be reliably specified the path of the pin within the backdrop. In this context, it can be provided that the spring is designed as a helical compression spring, which is supported on one end on the inner wall of the lower shell of the remote switch housing and on the other end on the rocker.

Such springs are functionally reliable standard components which do not require their own manufacturing steps, so that their use keeps the technical manufacturing outlay of the remote switch according to the invention low. With such helical compression springs, sufficient forces can also be generated for the local application.

In a further development of the invention it can be provided in this connection that pin-shaped projections are provided on the rocker and on the lower shell, onto which the ends of the spring are attached.

A lateral deflection of the spring, which can lead to impairment of the proper functioning of the remote switch, is thus effectively avoided. Furthermore, it can be provided that the bottom of one of the straight sections of the backdrop is provided with a ramp which begins in the area adjoining the curvature, rises in the direction of the tip and ends with an edge which is flush with the area in the area of the other straight section Edge of the V-shaped system runs. The result of this is that, despite its pretension, the pin cannot run into the straight section of the link provided with this ramp, but rather reaches the other straight section of the link. The path through which the backdrop passes is thus specified in advance, so that the exact shape of the backdrop can be adapted to this only possible route, in particular it can be designed to be particularly low-friction or tilt-free. According to a particularly preferred embodiment of the invention, it can be provided that the return spring is designed as a helical compression spring which is supported with its first end on part of the housing, preferably an intermediate shell, and the other end of which rests on the slide.

Such springs are functionally reliable standard components that do not require their own manufacturing steps, so that their use keeps the technical manufacturing effort of the remote switch according to the invention low. With such helical compression springs, sufficient forces can also be generated for the local application.

In this connection, peg-shaped projections can be provided on the slide and housing, onto which the ends of the return spring are attached. A lateral deflection of the spring, which can lead to impairment of the proper function of the remote switch, is thus effectively avoided. In a further development of the invention it can be provided that the rocker has two cylindrical projections which engage in indentations machined into the housing of the remote switch, these indentations having a slightly larger diameter than the projections.

This type of storage can be produced in an uncomplicated manner and has a particularly low friction which contributes to a problem-free functioning of the remote switch. According to a preferred embodiment of the invention, it can be provided that the indentations have a slot-like shape and are incorporated into the end faces of the spacers spaced apart from one another, which are molded onto the inner wall of the lower shell, and that spacers spaced apart from one another are molded onto the intermediate shell, whereby the plates of the lower and intermediate shells are aligned with one another when the intermediate shell is placed on the lower shell.

The rocker can be inserted particularly easily into indentations configured in this way, with which the technical outlay required for assembling the remote switch according to the invention can be kept particularly low.

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

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, the movable contacts of the two switching paths being arranged on a common slide and being movable by this relative to the fixed contacts. The remote switch also has a magnet system with an excitation coil and an armature movable by it, which is coupled to the slide, which slide is pressed by means of a return spring in the direction of a first switching position, the slide in the area of the movable contacts two by one Split arms apart and each arm has at least one movable contact piece

Switching distance.

To achieve the above-mentioned further object, the invention provides that at least one section of the first arm, preferably the entire first arm, than the rest

Slider is formed separate component that can be fixed on the remaining slider.

This allows the slide to be assembled without the first when the remote switch is assembled

Insert the arm into the lower shell of the housing and then place the intermediate shell, which separates the two switching sections from each other and which runs through the slot between the two arms. Finally, the first arm on the rest

Slider can be set. This eliminates the laborious threading of the intermediate shell into the slot between the arms, as is necessary in the case of the one-piece design of the first arm with the remaining slider known to date.

Furthermore, by simply omitting the first arm and the electrically conductive

Components of the switching path assigned to this first arm are a single-pole, only one

Remote switch having switching distance can be realized. If both two-pole and single-pole remote switches are to be manufactured, then all components, in particular the housing, the magnet system and the slide of both product types, can be manufactured in the same way, that is with the same tools and therefore particularly inexpensively. Only with

Assembly is to differentiate between single-pole and two-pole remote switching by installing the first arm and the electrical components of the first switching path.

In a further embodiment of the invention it can be provided that a dovetail-shaped groove is incorporated in the first arm, which is designed separately from the rest of the slide, with which the first arm can be placed on a corresponding guide formed on the remaining slide.

The first arm can thus be particularly simple and reliable and without any

Auxiliary materials such as Glue to be fixed on the rest of the slide.

Another object of the present invention is to provide an electromechanical

To specify the switch below, in which the movable one (s)

Contacts are particularly reliable, especially when they are slightly welded to the fixed contacts, are lifted from them.

The remote switch to be specified has at least one fixed contact and a movable contact cooperating with it, which is arranged on a slide and of this is movable relative to the fixed contact and a magnet system with an excitation coil and an armature movable by this, which is coupled to the slide, which slide is pressed by means of a return spring in the direction of a first switching position, the slide for holding the at least one movable Contact has a cage consisting of two, extending in the direction of displacement of the slide

Side walls and cover plates connecting these is formed and the at least one movable contact is arranged on an approximately rectangular plate, which plate is received between the side walls of the cage and is pressed against one of the cover plates by means of a compression spring arranged inside the cage.

To achieve the stated object, the invention provides that the inner surfaces of the cage side walls are parallel to one another and inclined at an acute angle to the

Direction of displacement of the slide.

When the slide moves, which leads to a lifting of a movable contact from its associated fixed contact, the inner surfaces of the slide first

Cage side walls along the plate carrying the movable contact and move it normally to the direction of movement of the slide. The moving one

Contact laterally shifted from the fixed contact, whereby possible

Welding of these two contacts can be torn open.

It has proven to be advantageous for the size of the acute angle to be in the range between 3 and 5 °, because this enables sufficiently large displacements of the contacts to be achieved for the tear-open contact welds just discussed, but at the same time that

Smooth movement of the relative movements between the slide and the movable ones

Contact-bearing plate is not noticeably affected.

In a development of the invention it can be provided that the compression spring as

Helical compression spring is formed, which is supported with one end on the plate and with its other end on one of the cover plates of the cage.

Such springs are functionally reliable standard components that do not have their own

Manufacturing steps require what their use the technical

Manufacturing effort of the remote switch according to the invention keeps low. With such helical compression springs sufficient forces can be generated for the local application. In this context, according to a preferred embodiment of the invention, preferably dome-shaped ones arranged on the plate and on one of the cover plates of the cage

Formations are provided, on which the ends of the compression spring are attached.

A lateral deflection of the spring, which until the proper

Function of the remote switch can be effectively avoided.

Another object of the present invention is an electromechanical

Specify switch below defined type, with its magnet system in each

Position of its anchor high forces can be exerted on the anchor.

The remote switch to be specified has at least one fixed contact and a movable contact cooperating with it, which is arranged on a slide and can be moved by the latter with respect to the fixed contact, and a magnet system with an excitation coil and an armature movable by this, which is coupled to the slide, which slide is pressed in the direction of a first switching position by means of a return spring, a magnetic core being arranged in the interior of the excitation coil, which is in a magnetically good-conducting connection with a yoke running approximately parallel to the longitudinal axis of the coil, on the front side of which yoke the armature is in the region of its first

Front side is pivotally mounted.

To achieve the stated object, the invention provides that the

Side surfaces of the yoke anchor bearing plates are defined, which protrude beyond the end face of the yoke and the section of the anchor located there.

These anchor bearing plates can be used regardless of the position of the anchor

Form magnetic flux with a relatively high strength, so regardless of the position of the

Anchor high forces can be exerted on him. This results in a high one

Functional reliability of the magnet system and thus the entire remote switch.

The invention is described in more detail with reference to the accompanying drawings, in which particularly preferred exemplary embodiments are shown. It shows:

Fig.l and 2 each an electromagnetic remote switch according to the invention comprising two switching paths with the top shell removed in oblique view, with one moving contact 2 is provided per switching path and its connection with a rigid

Busbar 5 is realized differently;

3 shows a preferred embodiment of an electromagnetic according to the invention

Remote switch comprising two switching paths with the top shell removed in oblique view, two moving contacts 2 being provided per switching path; 4 shows the magnet system 8 of a remote switch according to the invention with the slide 7 in

oblique;

5 shows that shown in FIG. 4, the rocker 17 also being shown;

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

7 the one shown in FIG. 3, the intermediate shell 21 being shown removed from the lower shell 23 and the rocker 17 being omitted;

8 the one shown in FIG. 3, the slide 7 being in its second switching position, and

9 shows an alternative embodiment of the heart-shaped recessed in the slider 7

Backdrop 15.

An electromechanical remote switch according to the invention, like already known switching devices of this type, comprises 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 interact to the extent that they enable 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 with its end portion 3 'in a known, in the attached

Drawing figures, not shown, leads to the terminal. The movable contact 2 is connected via a movable conductor cable 4 to a further busbar 5, the

End section 5 'opens into a second terminal, also not shown.

Instead of the conductor cable 4, a conductor rail 59 with a small thickness and thus elastic can also be provided (cf. FIG. 2). The movable contacts 2 are each arranged on a slide 7 and of this opposite the fixed one

Contact 1 movable. A circuit that is to be switched with the remote switch according to the invention can be connected to the latter via said connection terminals. The remote switch according to the invention can be installed in a control cabinet, for what purpose

Housing in a manner known per se, a lower shell 23 and one that can be placed thereon

Upper shell (not shown in the accompanying drawings) includes.

The remote switch according to the invention is as shown in the accompanying drawings, preferably two actuated simultaneously by a single slide 7

Comprehensive switching distances. 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 of the details described below as inventive can also be used without restriction when designing the switching path according to FIG. 1 or FIG. 2, regardless of the fact that they are discussed below with reference to the preferred embodiment of a switching path shown in FIG.

In contrast to the above two versions, the switching path in FIG. 3 has two fixed contacts 1, which are fixed at a short distance from one another and each on a rigid busbar 3, 5. Two movable contacts 2 are provided, which are fixed on an electrically conductive plate 6, the distance between these movable contacts 2 corresponding to that of the fixed contacts 1. The plate 6 is arranged on a slide 7 - in a manner described in more detail below, with which the slide 7 is also operatively connected to the two movable contacts 2 and can move them relative to the fixed contacts 1. A magnet system 8 is provided for driving the slide 7. In order to also be able to operate the slide 7 manually, an actuation button 36 is arranged at its upper end, which protrudes through an opening in the lower shell 23. The magnet system 8 comprises an excitation coil 9 and an armature 10 movable by the latter. In the exemplary embodiment shown in the accompanying drawings, a magnetic core 11 is arranged inside the excitation coil 9, which is in a magnetically good conductive connection with a yoke 12 running approximately parallel to the coil longitudinal axis. On the end face 61 of this yoke 12, the armature 10, which is designed as a flat plate, is pivotably mounted in the region of its first end face and is thus designed as a hinged armature (see FIG. 4.5). This position is realized in such a way that the armature 10 is placed on the yoke face 61 with one edge of its face. A resilient sheet metal strip 62 is fastened to the yoke 12, which projects beyond the yoke end face 61 and has a section 63 which is bent over in the direction of the armature 10 and with which it engages over the armature 10. With this section 63, the resilient sheet metal strip 62 also acts as an anchor spring.

With the area of its second end face, the armature 10 projects into a slot-shaped recess 13 of the slide 7 and is thus coupled to the slide 7. The slide 7 is displaceably mounted in the housing of the remote switch in the displacement direction 14 symbolized by the arrow and is movable by the armature 10 in this displacement direction 14.

A special feature of this magnet system 8 are the armature bearing plates 60, which are fixed on the side surfaces of the yoke 12. They are the end face 61 of the yoke 12 and the section of the armature 10 lying in the region of this end face 61 is of outstanding design. A relatively large magnetic flux can always flow through these armature bearing plates 60, in particular also when the armature 10 is in its position shown in FIG. A relatively large magnetic force can thus always be exerted on the armature 10, which leads to a high functional reliability of the magnet system 8.

A restoring spring 20 also acts on the slide 7 and presses the slide 7 into the first switching position shown in FIG. 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 distances, and the other end of which rests on the slide 7. In order to ensure a stable fixing of the return spring 20 on the slide 7 and on the housing (on the intermediate shell 21), there are in the areas of the slide 7 and housing on which 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 those on the housing, i.e. on the intermediate shell

21 defined projection 22).

If the excitation coil 9 is supplied with voltage, a magnetic is applied to the armature 10

Exerted force that is greater than the force generated by the return spring 20, so that the

Slider 7 can be moved against the return spring 20.

It also falls within the scope of the present invention and within the scope of the attached claims to construct the magnet system differently, for example in the form that the armature 10 movable by the excitation coil 9 as in

Inside of the winding body of the excitation coil 9, there is a displaceably mounted pin, as is provided, for example, in the case of impact armature triggers of circuit breakers.

In a remote switch comprising the components discussed so far, the at least one contact 2, which cooperates with the at least one fixed contact 1, can be moved monostably because the return spring 20 pushes the slide 7 —and with it the at least one movable contact 2 — toward the first switching position ,

In order to give the remote switch bistable switching behavior, that is to say bistable contact actuation, a link 15 is incorporated into the surface of the slide 7. This is preferably as shown in the accompanying drawings, approximately heart-shaped trained, but - as will be explained after the discussion of the functioning of this approximately heart-shaped backdrop - can also have a different shape.

In this backdrop 15 engages a pin 16 which is fixed on a rocker 17. This seesaw

17 is pivotable in parallel to the slide surface having the slide 15

Remote switch housing mounted.

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. 5 one of these formations 18 can be seen, the second lies on the opposite surface of the rocker 17 which cannot be seen in FIG. 5. The indentations 19 for receiving the cylindrical formations 18 have somewhat larger dimensions than the formations 18, which means that the Rocker 17 can be pivoted slightly normal to the direction of displacement 14.

The indentations 19 are preferably not designed as fully cylindrical, mutually aligned and spaced apart the thickness of the rocker 17 holes, because the installation of the rocker 17 in such holes would be difficult. As can be seen in Fig. 7, the

Indentations 19 incorporated into the lower shell 23 and have a slit-like shape.

These indentations 19 preferably have semi-cylindrical bottoms, the diameter of which is slightly larger than that of the projections 18.

On the inner wall of the lower shell 23 two plates 24 are formed, in which the

Such an indentation 19 is incorporated in each case between the end faces 21 facing the shell. The distance between these two plates 24 corresponds to the thickness of the rocker 17 in

Area of their formations 18. The rocker 17 is inserted into the distance between the plates 24, the formations 18 coming to rest in the indentations 19.

Plates 24 ′ spaced apart from one another are also formed on the intermediate shell 21.

The plates 24, 24 'are arranged in such a way that when the intermediate shell 21 is placed on the lower shell 23 they run flush with one another and their end faces lie on one another or are only slightly spaced apart. The indentations 19 in the

Lower shell 21 arranged platelets 24 are of the platelets 24 '

The intermediate shell 23 is closed and the projections 18 are enclosed in the recesses 19.

The heart-shaped backdrop 15 preferably has the asymmetrical shape shown in FIGS. 1-8. This includes a tip 24 extending in the direction of displacement 14 of the slide 7 and straight sections 25, 29 which adjoin this tip 24 are arranged (see Fig. 6). The straight sections 25, 29 are arranged in a V-shape with respect to one another and separated from one another by an approximately V-shaped system 27. Each of these straight sections 25, 28 is followed by a curve 26, 28, which two curves 26, 28 open into one another in the region above the V-shaped system 27. The heart-shaped backdrop 15 and the pin 16 arranged on the rocker 17 form a locking device which functions as follows:

In the state of the remote switch shown in FIGS. 3, 5 and 6, the pin 16 is located in the tip 24 of the heart-shaped link 15. The switching path of the remote switch which can be seen in FIG. 3 is switched off because the movable contacts 2 are lifted off the fixed contacts 1 are.

If the excitation coil 9 is subjected to voltage in this situation, the slide 7 is shifted downward (directional information based on the position of the remote switch shown in FIG. 3). During this movement, the pin 16 first passes through the tip 24 extending in the displacement direction 14 and subsequently through the right straight section 25 of the link 15. The curvature 26 adjoining this straight section 25 guides the pin 16 over the approximately V-shaped system 27 where it is shown schematically in Fig. 6 with a solid line. During this passage of the pin 16 through the link 15, the rocker 17 is initially pivoted slightly clockwise (until the pin 16 has reached the curvature 25) and then pivoted counterclockwise. If the excitation coil 9 is de-energized, the return spring 20 can push the slide 7 upwards. The approximately V-shaped system 27 is shifted in the direction of the pin 16 until it rests on the system 27 (cf. the dot-dash position of the pin 16). The slide 7 can therefore no longer return to the position shown in FIG. 3, but is held in the position shown in FIG. 8, in which the movable contacts 2 of the switching path visible in FIGS. 3, 8 are still on the fixed contacts 1 apply and this switching path is thus closed. This second switch position is thus a stable switch position that is stable even when the excitation coil 9 is de-energized.

A movement of the slide 7 back into the switching position shown in FIG. 3 can be effected by a further voltage pulse applied to the excitation coil 9: The slide 7 is moved downwards again by such a further voltage pulse, as a result of which the pin 16 moves into the curvature 28 of the left wing of the heart-shaped backdrop 15 is moved (see. Dotted representation of the pin 16 in Fig.6). After the voltage pulse has subsided, the return spring 20 can move the slide 7 upwards, the Pin 16 reaches the tip 24 of the link 15 via the left straight section 29. The slide 7 can now again be moved into the switching position shown in FIG. 3, into which the switching path visible in FIG. 3 is open.

The remote control switch according to the invention can also be operated by hand, in deviation from the previous versions, for which purpose the slide 7 - as already explained above - is provided with an actuating button 36 which projects through an opening in the lower shell 23. The locking mechanism formed from pin 16 and link 15 works completely the same with manual slide actuation. So that the pin 16 always takes the previously discussed, counterclockwise path through the link 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. In the context of this description and the attached claims, “wing of the backdrop 15” is understood to mean the entirety of a straight section 25 or 29 and the curve 26 or 28 adjoining it. The bias of the rocker 17 in the direction of the left backdrop Wing is to be understood as an example, it would be completely equivalent to bias the rocker 17 in the direction of the right-hand backdrop wing, with the backdrop 15 naturally having to be mirrored about its axis running in the displacement direction 14.

In the preferred embodiment of the accompanying drawings, this spring 30 is designed as a screw pressure spring, which is supported at one end on the inner wall of the lower shell 23 and at the other end on the rocker 17. For stable fixing of the spring 30 analogous to the return spring 20, pin-shaped projections 37 can be provided on both the rocker 17 and the lower shell 23, onto 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 assumes the positions shown with a continuous, dash-dotted and dotted line. You could get by without this spring 30 if its function (press rocker 17 towards the left wing of the backdrop 15) is achieved otherwise. This can be done, for example, by arranging the rocker 17 at a slight incline in the direction of the left-hand wing, so that the end of the rocker 17 provided with the pin 16 is pushed by gravity in the direction of the left-hand wing. In order to prevent the pin 16 from entering the left straight section 29 after leaving the tip 24, the bottom of this straight section 29 is provided with a ramp 31 which begins in the region adjoining the curvature 28 and rises in the direction of the tip 24 , The ramp 31 ends with an edge 33 which is aligned with the edge 32 of the V-shaped system 27 lying in the region of the straight section 25. The foot-side end of the pin 16 slides on leaving the tip 24 along this edge 33 and cannot therefore enter the left straight section 29, but must run along the edge 32 of the V-shaped system 27 into the right straight section 25. If the rocker 17 is prestressed in the direction of the right-hand backdrop wing, the ramp 31 just discussed must be arranged in the right-hand straight section 25 of the backdrop 15. An alternative, also conceivable constructive design of the heart-shaped link 15 is to make it completely symmetrical, that is to say with identical left and right wings (cf. FIG. 9). After leaving the tip 24, the pin 16 comes into contact with the cutting edge 34 of the V-shaped projection 27 and then happens to be in the right one

25 or the left straight section 29 can be steered. After the pin 16 has been deflected by the curvature 26 or 28, after the voltage pulse applied to the excitation coil 9 has subsided, it comes to lie below the cutting edge 35 in the position shown in broken lines. When the slide 7 is displaced again, the pin 16 comes into contact with this cutting edge 35 and, depending on chance, becomes the right one again

26 or directed into the left curvature 28. In both cases, the pin 16 ultimately returns to the tip 24.

From the explanation of the function of the backdrop 15 it is clear that this is also one of the

Heart shape can have a different shape, provided that in this shape the pin 16 is stably supported in two spaced-apart holding snap points and the link 15 can guide the pin 16 slidably between these two holding snap points.

For example, it would be conceivable based on the embodiment of FIG. 9, the backdrop

15 half-heart-shaped, i.e. only one of the two wings.

The shape of this wing could, according to another conceivable variant of the

Deviate half-heart shape and be approximately in the shape of a half ellipse.

The invention is thus not based on the approximately heart-shaped shown in the drawings

Design of the backdrop 15 limited.

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

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

However, the functions of the two switching paths can be selected or combined with one another as desired. For example, both switching paths can be designed as NO contacts or both as NC contacts, or one or both switching paths can be designed as change-over contacts.

Magnet system 8 and slide 7 are provided together for both switching distances, i.e. the movable contacts 2 of the two switching paths are arranged on a single, common slide 7 and can be moved by this relative to the fixed contacts 1. As can best be seen from FIG. 4, the slide 7 has two arms 41, 42 in the region of the movable contacts 2, which are separated from one another by a slot 40. The movable contact pieces 2 of the remote switch are arranged on these two arms 41, 42, each arm 41, 42 carrying the only movable contact piece 2 or the two movable contact pieces 2 each of a switching path. With the housing of the remote switch completely assembled, the wall 45 of the intermediate shell 21 lies in the area of the slot 40. Each of the two arms 41, 42 thus projects into the switching path assigned to it and is in the area of the movable contact 2 from the other switching path through the wall 45 the intermediate shell 21 separated.

A special feature of the slide 7 provided in a remote switch according to the invention is that the entire first arm 41 is designed as a separate component from the remaining slide 7, but can be fixed on the remaining slide 7. This fixability can in principle be implemented arbitrarily, for example the arm 41 could be glued to the rest of the slide 7. According to the preferred embodiment shown in the accompanying drawings, a releasable, positive locking of the arm 41 on the slide 7 is provided: a dovetail groove 43 is incorporated in the first arm 41. In the area of the remaining slide 7, in which the arm 41 is to be fixed, a guide 44 is formed, which corresponds in terms of its cross-sectional shape to that of the groove 43 and is slightly smaller than this. The arm 41 can be placed on this guide 44 and can thus be positively fixed on the remaining slide 7. The shape of the cross section of groove 43 and guide 44 can be chosen as desired and can be, for example, the hammer shape shown in the drawings. Alternatively, the groove 43 and guide 44 could have a trapezoidal cross section, the longer of the parallel side edges of this trapezoid lying in the region of the bottom of the groove 43 or the corresponding surface of the projection 44 in order to provide a positive connection between the arm 41 and the rest Reach slider 7. As can be seen from FIG. 7, when assembling the remote switch, first the slide 7 can be inserted into the lower shell 23, then the intermediate shell 21 can be put on and then the arm 41 can be plugged onto the remaining slide 7. A tedious threading of the slide arms 41 and 42 into the areas between the lower shell 23 and the intermediate shell 21 or between the upper shell and the intermediate shell 21 can thus be avoided.

In order to achieve this simple assembly of the slide 7 in the remote switch housing, it can be provided, in deviation from the previous illustration, that not the entire arm 41, but only a section of the arm 41, namely the lower section carrying the movable contact 2, as a separate component is formed from the remaining slide 7. The other section of the arm 41 is made in one piece with the slide 7. It should be noted, however, that the other arm section, which is made in one piece with the slide 7, ends above the wall 45 when the slide 7 is in the first switching position (FIG. 3), so that the wall 45 of the intermediate shell 21 does not when the remote switch is assembled must be threaded into the slot 40 between the two arms 41,42.

Another aspect according to the invention lies in the structural design of the mounting of the movable contacts 2 on the slide 7. As can be seen from FIG. 6, the slide 7 has a cage 50 for mounting the movable contacts 2 of a switching path. Since the remote switch shown in the drawings comprises two switching paths, the movable contacts 2 - as described above are arranged on two arms 41, 42 - each of these arms 41, 42 is equipped with such a cage 50.

This cage 50 has two side walls 51, 52 running in the displacement direction 14 of the slide 7 and cover plates 53, 54 connecting these. The one movable contact 2 (cf. Fig. 1, 2) or the two movable contacts 2 (cf. Fig. 3) is or are arranged on an approximately rectangular plate 6, which plate 6 between the side walls 51, 52 of the Cage 50 is added. A pressure spring 55 is arranged within the cage 50 and presses the plate 6 against one of the cover surfaces 53, 54. Which of the two cover surfaces 53, 54 the plate 6 is pressed against depends on which switching function (NO or NC) the switching path in question is to perform. If the switching path is designed as a make contact, as shown in FIG. 3, the fixed contacts 1 being arranged below the lower cover surface 54, the plate 6 is pressed against the lower cover surface 54. When the slide 7 moves to close this switching path, the movable contacts 2 come to rest on the fixed contacts 1. Because of this concern, the plate 6 can no longer be moved as the slide 7 moves, but the compression spring 55 is compressed. The contact pressure with which the movable contacts 2 are pressed against the fixed contacts 1 is increased by the compression of the compression spring 55.

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

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

When the pressure spring 55 is designed as a helical compression spring, in accordance with the preferred embodiment of the remote switch shown in the drawings, molded portions 56 are arranged on the plate 6 and on one of the cover plates 53, 54 of the cage 50, onto which the ends of the compression spring 55 are attached. These projections 56 are preferably in the form of domes, but could also be designed as cylindrical pins. The inner surfaces 57, 58 of the cage side walls 51, 52 run parallel to one another and inclined at an acute angle α to the direction of displacement 14 of the slide 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 rest on the fixed contacts 1 assigned to them, the plate 6 carrying these movable contacts 2 is lifted off the cover surface 53, 54 of the cage 50, on which it can come to rest, 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 the associated fixed contacts 1, the movable contacts 2 are initially not lifted from the fixed contacts 1: the plate 6 and with it the movable contacts 2 become rather pressed by the pressure spring 55 against the fixed contacts 1, the pressure spring 55 being released as the slide 7 progressively moves. Only when one of the cover plates 53, 54 of the cage 50 comes to rest on the plate 6, is it moved and the movable contacts 2 are lifted off the fixed contacts 1. During the displacement of the cage 50 relative to the plate 6 which takes place prior to this lifting, 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 direction of displacement 14 of the slide 7, the plate 6 is displaced normally to the direction of displacement 14. The movable contacts 2 are thereby moved parallel to the surfaces with which they rest on the fixed contacts 1. In this lateral relative movement of the movable 2 relative to the fixed contacts 1, which is normal to the direction of displacement 14 or the lifting movement, slight welds between the contacts 1, 2 are torn open.

When the slide 7 is displaced, which leads to the movable contacts 2 being placed against the fixed contacts 1 assigned to them, as already explained above, the movable contacts 2 are first placed against the fixed contacts 1 and when the slide 7 moves further the pressure spring 55 acting on the plate 6 is compressed. Even during this compression, the inner surfaces 57, 58 slide along the plate 6, which causes the movable contacts 2 to move normally to the direction of displacement 14. Since the movable contacts 2 are already in contact with the fixed contacts 1, the movable contacts 2 are rubbed against the fixed contacts 1, which means that the contact surfaces of both contacts are cleaned 1.2 results. This helps to achieve a low contact resistance or to maintain this low resistance over the life of the remote switch.

Claims

PATENT CLAIMS

1. Electromechanical remote switch comprising at least one fixed contact (1) and a cooperating monostable movable contact (2) which is arranged on a slide (7) and can be moved relative to the fixed contact (2) and a magnet system (8) with an excitation coil (9) and one of these movable armature (10), 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, characterized in that for bistable contact actuation, a link (15) is worked into the surface of the slide (7) and a pin (16) engaging in this link (15) is provided, which is fixed on a rocker (17) which is parallel to the link (15) having slide surface is pivotally mounted.

2. Electromechanical remote switch according to Anspmch 1, characterized in that the backdrop (15) is approximately heart-shaped.

3. Electromechanical remote switch according to Anspmch 2, characterized in that the link (15) a in the displacement direction (14) of the slide (7) extending tip (24), adjoining V-shaped to each other and by an approximately V-shaped system (27) separate straight sections (25,29) and two curvatures (26,28) which connect to the straight sections (25,28) and open into one another in the area above the V-shaped system (27).

4. Electromechanical remote switch according to Anspmch 2 or 3, characterized by a spring (30) biasing the rocker (17) in the direction of one of the two wings of the link (15).

5. Electromechanical remote switch according to Anspmch 4, characterized in that the spring (30) is designed as a helical pressure spring which is supported 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).

6. Electromechanical remote switch according to Anspmch 5, characterized in that on the rocker (17) and on the lower shell (23) pin-shaped projections (37) are provided, on which the ends of the spring (30) are attached.

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) is provided with a ramp (31) which in the curvature (26 or . 28) the adjoining area begins, rises in the direction of the tip (24) and ends with an edge (33) which is flush with the edge (32) of the V-shaped arrangement (32) lying in the area of the other straight section (29 or 25) 27) 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, which is supported with its first end on part of the housing, preferably an intermediate shell (21), and the other end of which on the slide (7) is present.

9. Electromechanical remote switch according to Anspmch 8, characterized by on the slide (7) and housing arranged pin-shaped projections (22), on which the ends of the return spring (20) are attached.

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 recesses (19) incorporated in the housing of the remote switch, these recesses (19) having a slightly larger diameter than the projections (18).

11. Electromechanical remote switch according to Anspmch 10, characterized in that the indentations (19) have a slot-like shape and are incorporated in the end face of the intermediate shell (21) of spaced-apart plates (24) which on the inner wall of the lower shell (23) are formed and that plates (24 ') spaced apart from one another are formed on the intermediate shell (21), the plates (24, 24') of the lower and intermediate shell (23, 21) with the intermediate shell (23) placed on the lower shell (23). 21) are aligned with one another.

12. Electromechanical remote switch with two switching paths, each of which comprises at least one fixed contact (1) and a movable contact (2) cooperating therewith, the movable contacts (2) of the two switching paths being arranged on a common slide (7) and by This can be moved relative to the fixed contacts (1), which remote switch furthermore has a magnet system (8) with an excitation coil (9) and an armature (10) movable by this, which is coupled to the slide (7), which slide ( 7) is pressed in the direction of a first switching position by means of a return spring (20), the slide (7) in the region of the movable contacts (2) having two arms (41, 42) separated from one another by a slot (40) and each arm (41, 42) which carries at least one movable contact piece (2) each of a switching path, characterized in that at least a portion of the first arm (41), preferably the entire arm ste arm (41), as a separate from the remaining slide (7), on the remaining slide (7) fixable component is formed.

13. Electromechanical remote switch according to claim 12, characterized in that in the first, as from the rest of the slide (7) separately formed arm (41) a dovetail groove (43) is incorporated, with which the first arm (41) on a corresponding, molded guide (44) on the remaining slide (7).

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 can be moved by this relative to the fixed contact (1) 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 in the direction of a first switching position by means of a return spring (20), the slide (7) for holding the at least one movable contact (2) has a cage (50) which is formed from two side walls (51, 52) extending in the direction of displacement (14) of the slide (7) and cover plates (53, 54) connecting them and the at least one movable contact (2) is arranged on an approximately rectangular plate (6), which plate (6) is received between the side walls (51, 52) of the cage (50) and by means of one inside the cage (50) arranged compression spring (55) is pressed against one of the cover plates (53, 54), characterized in that the inner surfaces of the cage side walls (51, 52) run parallel to one another and inclined at an acute angle (α) to the direction of displacement (14) of the slide (7).

15. Electromechanical remote switch according to Anspmch 14, characterized in that the size of the angle (ά) is in the range between 3 and 5 °.

16. Electromechanical remote switch according to Anspmch 14 or 15, characterized in that the pressure spring (55) is designed as a screw pressure spring, which has one end on the plate (6) and the other end on one of the cover plates (53, 54) of the Cage (50) supports.

17. Electromechanical remote switch according to Anspmch 16, characterized by, preferably dome-shaped projections (56) arranged on the plate (6) and on one of the cover plates (53, 54) of the cage (50), onto which the ends of the pressure spring (55) are attached.

18. Electromechanical remote switch comprising at least one fixed contact (1) and a movable contact (2) which interacts with it, which is arranged on a slide (7) and can be moved by this relative to the fixed contact (2) and a magnet system (8) with an excitation coil (9) and an armature (10) movable by the latter, which is coupled to the slide (7), which slide (7) is pressed in the direction of a first switching position by means of a return spring (20), the inside of the excitation coil ( 9) a magnetic core (11) is arranged, which is in a magnetically good conductive connection with a yoke (12) running approximately parallel to the longitudinal axis of the coil, on the end face (60) which yoke (12) the armature (10) in the region of its first end face is pivotally mounted, characterized in that anchor bearing plates (60) are fixed on the side surfaces of the yoke (12), which are the end face (61) of the yoke (12) and the sections located there protrude from the armature (10).