SK287728B6 - Electromechanical remote switch - Google Patents

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

Technical field

BACKGROUND OF THE INVENTION The present invention relates to an electromechanical remote switch comprising at least one fixed contact and an associated monostably movable contact which is arranged on and moved against the fixed contact, the latter being pushed in the direction of the first switching position by the return spring, the control is processed into the runner surface by means of a pin which is mounted on a cradle which is rotatably mounted parallel to the runner surface comprising the gate, the gate comprising a tip extending in the direction of travel of the runner connected to it with straight sections opposed to each other V-shaped and separated from each other by substantially V-shaped fit

BACKGROUND OF THE INVENTION

Such remote switches can be made in two different versions which differ in their switching behavior. On the one hand, monostable remote switches are known which are still held by the return spring in the first switching position and can only occupy the second switching position when a sufficiently high voltage is applied to the excitation coil. Such remote switches are also referred to as relays or contactors. Bistable remote switches (also referred to as circuit breakers), on the other hand, can stably hold two switching positions when their excitation coil is de-energized. Only a voltage pulse or current pulse must be applied to the excitation coil only to switch from one to the other switching position.

US PS 4404 444 discloses a push button switch mechanism comprising a housing on which electrical connections are attached. The second essential part of the mechanics is a slider which is slidably mounted in the recess of the cover in the direction of its longitudinal axis. On the lateral surfaces, the slider carries contact plates by means of which electrical connections can be made between the electrical connections. A short-circuiting spring that surrounds the slider and rests with its first end on the slider arm as well as its second end on the front of the housing, biases the slider away from the housing. At the top of the runner, a heart-shaped backdrop (cf. FIG. 2) is formed which cooperates with a " L-stop " type: the first arm extending upwardly acts as a pivot pin and is received in the housing opening. The second, downwardly extending pin fits into the heart-shaped backdrop (cf. FIG. 4). Through the interaction of "stop members" with a heart-shaped backdrop, the runner is interested in controlling, i.e. j. when shifting in the direction of its longitudinal axis, two stable positions. The switch can be converted to a monostable switch relatively easily, and a stop member is simply selected.

FR A 2 014 488 discloses an electromagnetic switch with a magnetic coil, an L-shaped yoke and a parachute anchor rotatably mounted thereon. This anchor moves the switching lever running parallel to the longitudinal axis of the coil and carrying the pin. A runner is arranged parallel to the switch lever and presses the contact springs with its free end. A recess is drawn into the runner in the form of an isosceles triangle, which has a step in the area of its hypotenuse. The pin fits into this triangle. On the side of the slider facing the magnetic coil lies a latch lever which is rotatable about an axis connected to the slider. The latch lever has a nose at its free end lying in the region of the triangular recess. On the far side of the runner lies another lever which has an inclined plane in the recess area that projects inwardly of the recess. The bistable switching behavior is obtained as follows: when the anchor is pulled, the pin in the step comes to abut and moves the runner downwards. In this case, the nose of the ratchet lever comes under a fixed point arranged on the flange of the coil body and is rotated by the spring beyond this fixed point by means of a spring preload of the lever, thereby hooking the slider in this position. As the anchor falls off, it slides along the lower limiting surface of the inclined plane and finally arrives as shown in FIG. 2, to abut in the upper recess section. When the anchor is tightened again, the pin slides along the upper limiting surface of the inclined plane, coming into contact with the pawl lever, rotating it, releasing the hook-in of the fixed point. The switch slider is thereby released and can move up again. The pin comes - as shown in FIG. 3 FR-A1 2 014 488 - finally to be reached by the stairs again.

SUMMARY OF THE INVENTION

Taking into account this closest prior art, it is an object of the invention to improve the electromechanical remote switch according to the preamble of the new claim 1 so that it is simple and quick to operate, has a high switching reliability throughout its lifetime, is simple to manufacture and simple and inexpensive producible.

An electromechanical remote switch comprising at least one fixed contact and a monostable movable contact arranged on the slider and moved against the fixed contact, the slider being pushed in the direction of the first switching position by means of a return spring, being bistable the control is treated with a slider into the slider surface and engages in the slider which is mounted on a cradle rotatably mounted parallel to the slider surface containing the slider and wherein the slider comprises a tip extending in the sliding direction of the slider, a V-shaped and separated from each other by substantially V-shaped bearing according to the invention, further comprising a magnetic system with a guide coil and an anchor moved thereon, connected to the slider, the backdrop comprising two curves, which are connected to the right We have sections and mouths to each other in the V-shaped bearing area that the bottom of one of the straight sections of the gate is equipped with a ramp that starts in the area connected to the curvature, rises towards the tip and ends with a V-shaped region lying in the region of the second straight section, and further comprising a spring biasing the cradle towards one of the two wings of the gate.

The backdrop is part of a modified slider and does not increase the demands on the remote switch components. Since the slider is usually made as a die-cast plastic, the backdrop can be very easily formed by adjusting the corresponding shaping to the inner wall of the injection mold used to make the slider. The production process of the runner is therefore not adversely affected, apart from the one-time production of the shaping of the tool. Furthermore, a cradle with a pin that is attached to it is particularly easy to hold due to its shape, and therefore simply makes the other part.

The bistable switching behavior of the remote switch according to the invention can be easily converted into monostable, the cradle being omitted. If both bistable and monostable remote switches are to be manufactured, all components of both types produced can be produced in the same way, i.e. with the same tools and therefore particularly cost-effective.

Only when assembling can a distinction be found between bistable and monostable remote switches due to the installation or discharge of the cradle.

Furthermore, it may be necessary to adapt the excitation coil with a different number of turns: only short voltage pulses are applied to the current switches, therefore their coils are generated with relatively high power so that the short voltage pulses can generate sufficiently strong magnetic forces to operate the switch. On the other hand, the excitation coils of the relays are made with less power because they are subject to a voltage load for a longer period of time.

The excitation coils can be produced in the same way due to their geometrical dimensions through different numbers of turns, so that all other components of the magnetic system and 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 constructed approximately in the shape of a heart.

Bistable control of the contacts can be achieved particularly reliably in this way by means of a gate.

As already mentioned, the backdrop has a point extending in the direction of displacement of the runner which is connected to it, arranged in a V-manner on top of one another and separated from each other by abutting approximately V-shaped, straight sections as well as two curves connecting to straight sections and opening in the region above the V-style stop.

In a rocker manufactured in such a way, the pin can slide without any twisting, resulting in high functional reliability of the remote switch.

It has proved to be particularly advantageous to provide a spring biasing the cradle in the direction of one of the two wings of the link, since the travel of the pin within the link can be reliably indicated in advance.

In this connection, it can be provided that the spring is designed as a short-circuiting compression spring which bears on one end on the inner wall of the lower housing of the remote switch housing and on the far end on the cradle.

Such springs are functionally reliable standard components that do not require any production steps of their own, so that their use keeps the technical production costs of the remote switch according to the invention low. Furthermore, such compression springs can generate additional forces for this application.

In a further embodiment of the invention, it may be provided in this connection that pin-shaped formations are provided on the cradle and on the lower shell on which the ends of the springs are inserted.

The lateral deflection of the springs, which may lead to impairment of the proper functioning of the remote switch, is thereby effectively prevented.

As already mentioned, the bottom of one of the straight sections of the gate is provided with a ramp that starts in the area connected to the curvature, rises in the direction of the tip and ends above the edge that extends in the axis of the V edge of the precess straight section.

This achieves that the pin, despite its bias, cannot run inside the straight section of the gate equipped with this ramp, but reaches the expensive straight section of the gate. As a result, the path of the runner is forced to be predetermined in advance, so that the precise shape of the runner can be adapted to this only possible travel path, in particular it can be inserted separately without friction or without twisting.

According to a particularly preferred embodiment of the invention, it can be provided that the return spring is made as a short-circuiting compression spring which, at its first end, rests on a portion of the housing, preferably an intermediate casing, and its expensive end lies on the runner.

Such springs are functionally reliable standard components that do not require any production steps of their own, so that their use keeps the technical production costs of the remote switch according to the invention low. Furthermore, such compression springs can generate sufficient forces for this application.

In this connection, pin-like shapes may be provided on the slider and cover on which the ends of the springs are inserted.

The lateral deflection of the springs, which may lead to impairment of the proper functioning of the remote switch, is thereby effectively prevented.

In a further embodiment of the invention it can be provided that the cradle has two cylindrical formations which fit into the recesses provided in the remote switch housing, the recesses having a slightly larger diameter than the forming.

This type of housing can be manufactured without complications and has particularly low friction, contributing to the trouble-free operation of the remote switch.

According to a preferred embodiment of the invention, it can be provided that the depressions have a groove-like shape and are incorporated into the faces of the spaced apart plates facing the intercoats that are formed on the inner wall of the lower shell, and that the spacing is formed on the intermediate shell. the plates of the lower shell and the intermediate shell with the intermediate shell mounted on the lower shell are oriented in the same axis with respect to each other.

In the recesses constructed in this way, the cradle can be inserted particularly easily, so that the technical effort required to assemble the remote switch according to the invention can be kept particularly small.

BRIEF DESCRIPTION OF THE DRAWINGS

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

Fig. 1 and 2, in particular the electromagnetic remote switch according to the invention, comprising two switching paths with the upper casing switched on at an oblique section, wherein only one movable contact 2 is provided for the switching path and its connection to the rigid busbar 5 is different.

Fig. 3 shows a preferred embodiment of the electromagnetic remote switch according to the invention, comprising two switching paths, with the housing in an oblique section being switched on, two moving contacts 2 being provided for the switching path.

Fig. 4 shows a magnetic system 8 of a remote switch according to the invention with a slider 7 in an oblique section.

Fig. 5 shows the same in FIG. 4, wherein the cradle 17 is additionally shown.

Fig. 6 of the runner 7 with the cradle 17 in an oblique section.

Fig. 7 the same shown in FIG. 3, wherein the intermediate shell 21 is shown removed from the lower shell 23 and the cradle 17 is omitted.

Fig. 8 the same in FIG. 3, wherein the slider 7 is in its position in the second switching position, and FIG. 9 shows an alternative embodiment of the heart-shaped gate 15 embedded in the runner 7.

DETAILED DESCRIPTION OF THE INVENTION

The electromechanical remote switch according to the invention comprises, 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 cooperate so as to allow opening and closing of the current circuit connected to them.

As shown in FIG. 1, the fixed contact is fixed to the current busbar 3, which by its end section 31 opens into a connection terminal, not known in the accompanying drawings, which is not shown. The movable contact 2 is connected via a movable conductor wire 4 to another current busbar 5, the end section 51 of which flows into a second terminal (also not shown). Instead of the conductor wire 4, a current busbar 59 may also be provided, made of a smaller thickness and thus resilient (cf. FIG. 2). The movable contacts 2 are just arranged on the slider and are thereby moved against the fixed contact 1. The current circuit to be switched by the remote switch according to the invention can be connected to this via the connection terminals. The remote switch according to the invention is made for mounting in a switchgear cabinet, for which its housing comprises in a known manner a lower shell 23 and an upper shell (not shown in the attached figures) which can be mounted thereon.

Thus, the remote switch according to the invention is shown as in the accompanying figures, preferably formed to include two switching paths simultaneously operable by a single slider 7. In order to be able to electrically insulate each of these switching paths against each other, the cover further has an intermediate housing 21 which lies undercoat 23.

All details, hereinafter described, can be used without limitation in the embodiment of the switching path of FIG. 1 or FIG. 2, notwithstanding the fact that they are taken up in another according to the preferred embodiment of the switching path shown in FIG. Third

Switching path fig. 3, unlike the upper two embodiments, two fixed contacts 1, which are fastened at a small distance from each other and just on the rigid current busbar 3, 5. Two movable contacts 2 are provided, which are fastened to the electrically conductive plate 6, the spacing between these movable contacts 2 correspond to the spacing of the fixed contacts i.

The plate 6 is arranged - in the manner described even closer below - on the slider 7, whereby the slider 7 is operatively connected to the two movable contacts 2 and can move against the fixed contacts 1.

A magnetic system 8 is designed to drive the slider 7. To control the slider 7 also manually, a control knob 36 is provided at its upper end, which extends through a passage in the lower shell 23.

The magnetic system 8 comprises an excitation coil 9 and an armature 10 displaced therefrom. In the exemplary embodiment shown in the accompanying drawings, a magnetic core 11 is provided within the excitation coil 9, which is in magnetically well-conductive connection with the yoke 12 extending approximately parallel to the longitudinal axis of the coil. . On the front side 61 of this yoke 12, the anchor 10, manufactured as a flat plate, is mounted rotatably in the region of its first front side and is thus made as a parachute anchor (cf. FIGS. 4, 5). This arrangement is carried out so that the anchor 10 is laid by the edge of its front side on the front side 61 of the yoke. At the yoke 12 a spring plate 62 is provided which protrudes from the end 61 of the spring and has a section 63 angled in the direction of the armature W with which it extends beyond the armature 10. By this section 63 the spring plate 62 also acts as an armature spring.

By the region of its second front side, the anchor 10 projects into the groove-like recess 13 and is connected in this way to the slider 7. The slider 7 is displaceable in the direction of movement 14 symbolized by the arrow and displaceable in the cover of the remote switch. moving the anchor 10.

The particularity of this magnetic system 8 is illustrated by the anchor support plates 60 which are attached to the lateral faces of the yoke 12. They are designed to overlap the front side 61 of the yoke 12 and the anchor section 10 lying in the region of the front side 61. the anchor can always, especially also when the anchor 10 is in its position shown in FIG. 4, 5, raised by the magnetic core 11 to flow a relatively large magnetic flux. As a result, a relatively high magnetic force can be permanently applied to the armature 10, resulting in a high functional reliability of the magnetic system 8.

The slider 7 is further actuated by a return spring 20 which pushes the slider 7 to the first switching position shown in FIG. This return spring 20 is made as a helical compression spring, which bears at its first end on a part of the housing, preferably an intermediate housing 21, which separates the two switching paths, the other end of which lies on the runner 7 and on the housing ). In the regions of the slider 7 and the housing on which the ends of the return spring 20 lie, pin-like shapes 22 are provided on which the ends of the return spring 20 are inserted (cf. FIG. 7 for shaping 22 attached to the cover, i.e. to the intermediate shell 21).

When the excitation coil 9 is stressed, a magnetic force is applied to the armature 10 which is greater than the force generated by the return spring 20 so that the slider 7 can slide against the return spring 20.

It is also within the scope of the present invention and within the protected area of the appended claims to construct the magnetic system structurally differently, for example in such a way that the armature 10 movable by the excitation coil 9 is formed as a pin disposed displaceably within the wound excitation coil body 9 for breakers of line circuit breakers.

In a remote switch comprising the aforementioned components, at least one, at least one fixed contact and cooperating contact 2 is monostably movable because the return spring 20 pushes the slider 7 - and with it at least one movable contact 2 - in the direction of the first switching position.

In order to impart a bistable switching behavior, i.e., a bistable contact control, to the remote switch, a slider 15 is incorporated into the surface of the slider 7. This is preferably formed as shown in the attached figure, approximately heart-shaped, but may - as a follow-up the way this backdrop works in the shape of a heart will be interpreted - even in a different form.

This pin 15 fits a pin 16 which is mounted on a cradle 17. This cradle 17 is mounted rotatably in the remote switch housing, parallel to the surface of the slider having the gate 15.

This is carried out by means of a pair of cylindrical formations 18 on the cradle 17, which fit into the recesses 19 which are formed in the housing. In FIG. 5, one of these shapes 18 is recognizable. The other lies on the opposite surface of the cradle 17, which is not shown in FIG. 5 see. The depressions 19 have approximately larger dimensions to accommodate the cylindrical formations 18 than the formations 18, whereby the cradle 17 can also be slightly rotated perpendicular to the direction of displacement 14.

Preferably, the pleats 19 do not form fully cylindrical, facing each other in the same axis and spaced apart from the thickness of the cradle 17, since incorporating the cradle 17 into such holes would be difficult. As can be seen in FIG. 7, the pleats 19 are incorporated into the lower shell 23 and have the shape of a groove. These depressions 19 preferably have semi-cylindrical bottoms whose diameter is slightly larger than the diameter of the shaping 18.

Two inserts 24 are formed on the inner wall of the lower shell 23, in which such recesses 19 are incorporated in the faces facing the intermediate shell 19. The spacing between the two inserts 24 corresponds to the thickness of the cradle 17 in the area of their forming 18. The cradle 17 is inserted gaps between the plates 24, the moldings 18 abutting in the recesses 19.

Also, spaced apart plates 24 'are formed on the intermediate shell 21. The plates 24, 24 ' are arranged such that when the intermediate shell 21 is placed on the lower shell 23, they extend against each other in the same axis and bear against each other or with only a small distance from each other. The recesses 19 of the plates 24 arranged in the lower shell 21 are thereby closed by the plates 24 'of the intermediate casing 23 and the moldings 18 are enclosed in the recesses 19.

The heart-shaped slide 15 preferably has the asymmetric shape shown in FIG. This comprises a tip 24 extending in the direction of displacement 14 of the slider 7, as well as straight sections 25, 29 arranged to connect to this tip 24 (cf. FIG. 6). The straight sections 25, 29 are arranged opposite to one another in a V-manner and separated from each other by an abutment 27 approximately to the V-way. Each of these straight sections 25, 29 is connected with a curvature 26, 28, in the area above the V-shaped seating 27

The heart-shaped slide 15 and the pin 16 arranged on the cradle 17 form a latching device which functions as follows:

In the state of the remote switch shown in FIG. 3, 5 and 6, the pin 16 is located at the tip 24 of the heart-shaped backdrop. The switching path of the remote switch, as shown in FIG. 3 is switched off because the movable contacts 2 are lifted away from the fixed contacts 1.

If the excitation coil 9 is under stress in this situation, the slider 7 moves downwards (the directional data refer to the state of the remote switch shown in FIG. 3). During this movement, the pin 16 extends first through the tip 24 extending in the direction of displacement 14 and, in turn, the right straight section 25 of the gate 15. The curvature 26 connecting this straight section 25 leads the pin 16 through the abutment 27 approximately to V FIG. 6 is shown schematically in a continuous line. During this course of the pin 16 through the slide 15, the pin 17 first rotates slightly clockwise (until the pin reaches the curvature 26) and then counterclockwise.

If the excitation coil 9 is de-energized, the return spring 20 can push the slider 7 up. The abutment 27 approximately in the manner V is displaced in the direction of the pin 16 until it reaches the abutment 27 (cf. the dotted position of the pin 16 coded in dotted lines). Thus, the slider 7 can no longer return to the position shown in FIG. 3, but held in the position shown in FIG. 8, in which the movable contacts 2 of the switching path shown in FIG. 3, 8 lie on the fixed contacts 1 and the switching path is thereby closed. This second switching position is thus a switching position that keeps Q e stable) even in the voltage-free state of the excitation coil 9.

The movement of the slider 7 back to the switching position shown in FIG. 3, can be performed by means of a further voltage pulse applied to the excitation coil 9: the slider 7 moves again with such another voltage pulse, thereby moving the pin 16 into the curvature 28 of the left wing of the heart-shaped gate 15 (cf. 6). After the voltage pulse has subsided, the return spring 20 can move the slider 7 up, with the pin 16 moving back through the left straight section 29 to the tip 24 of the slider 15. The slider 1 can be moved again to the switching position shown in FIG. 3, in which the switching path is visible in FIG. 3, open.

The remote switch according to the invention can also be operated manually, unlike the earlier embodiments, for which the slider 7 - as explained further below - is provided with a control knob 36 protruding through an opening in the lower shell 23. The latch mechanism formed from the pin 16 and the slide 15, but with the slider 7 being manually operated in the same way.

In order for the pin 16 to always take the anti-clockwise travel through the gate 15, the following two measures are proposed: first there is a bed 30 which biases the cradle 17 in the direction of the left wing 15. and the appended claims, it is to be understood that the whole of the straight section 25 and 29, respectively, and the curves 26 and the associated curves 26, respectively. 28. The preload of the cradle 17 in the direction of the left wing of the backdrop is to be understood as an example, the same cost would be preloaded by the cradle 17 in the direction of the right wing of the backdrop, and naturally the backdrop 15 would have to be mirrored on its axis extending in the displacement direction 14.

In the preferred embodiment of the accompanying drawings, this spring 30 is formed as a helical compression spring which abuts one end against the inner wall of the lower shell 23 and the other end against the cradle 17. For stable fixing of the spring 30, not both on the cradle 17 but also pin-shaped formations 37 on which the ends of the spring 30 are inserted can be provided on the lower shell 23.

The force exerted by this spring 30 on the cradle 17 ensures that the pin 16 is still pressed in the direction of the left wing of the gate 15 and thereby assumes the position shown by the continuous, dotted and dotted line.

It could be sufficient without this spring 30 if its function (pushing the cradle 17 in the direction of the left wing of the gate 15) is otherwise achieved. This can be achieved, for example, by arranging the cradle 17 inclined slightly obliquely in the direction of the left wing of the gate, whereby the end of the cradle 17 provided with the pin 16 is pushed by gravity in the direction of the left wing of the gate.

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 starts in the region joining the curvature 28 and grows in the direction of the tip 24. which extends in the same axis with the edge 32 of the V-shaped bearing 27 lying in the region of the straight section 25. The end on the heel side of the pin 16 slides on leaving the tip 24 along this edge 33 and can thereby enter not into the left straight section 29. along the edge 32 of the abutment 27 in the manner V to run into the right straight section 25.

When the cradle 17 is biased in the direction of the right wing of the gate, said ramp 31 must also be arranged in the right straight section 25 of the gate 15.

Alternatively, the conceivable design of the heart-shaped gate 15 is also to create this completely symmetrically, i.e. with identical left and right wings (cf. FIG. 9). Here, the pin 16, after leaving the tip 24, contacts the cutting edge 34 of the V-shaped contact 27 and then rotates randomly to the right 25 or left straight section 29. After the pin 16 has returned by curving 26 or 28, it comes after the voltage pulse has subsided. When the slide 7 is moved again, the pin 16 comes into contact with the blade 35 and is guided again by chance to the right 26 or left curvature 28. In both cases the pin 16 finally returns to the tip 24.

From the explanation of the function of the slide 15 it becomes clear that it may also have another form deviating from the heart shape, as long as in this form the pin is stably mounted at two spaced apart latching points and the slide 15 can slide pin 16 without sliding be guided between the two latching points. For example, the embodiment of FIG. 9, it was conceivable to design a half-heart gate 15, thus comprising only one of the two wings.

According to another conceivable embodiment, the shape of this wing could deviate from the shape of a half heart and could be formed approximately in the form of a half ellipse.

Thus, the invention is not limited to the embodiment of the backdrop 15 approximately in the shape of a heart shown in the figures.

The remote switch according to the invention can be designed to include any number of switch paths, with only one remote switch comprising two switch paths shown in the accompanying drawings. In FIG. 1 to 3, there is illustrated just one switching path which is arranged in the region between the intermediate housing 21 and the upper housing of the remote switch housing. The second switching path lies between the intermediate shell 21 and the lower shell 23 and is designed with respect to the design principle in the same way as the first switching path shown in FIG. 1-3.

It can be provided that the second switching path is designed with a different switching function than the first switching path. It is to be understood that when the first switching path has a switching function (the switching path is open in the first switching position shown in FIGS. 1-3, and the second switching position shown in FIG. 8, closed), the second switching position is closed. The track is constructed with an opening function so that it is closed in the first switching position (FIGS. 1-3) and open in the second switching position (FIG. 8).

However, the functions of the two switching paths are arbitrarily selectable or optionally combined with one another. Thus, for example, the two switching paths can be designed as a make contact or both as a break contact, or just one or both switching paths can be made as a change-over auxiliary contact.

The magnetic system 8 and the slider 7 are arranged together on the two switching paths, i.e. the movable contacts 2 of the two switching paths are arranged on a single, common slider and can thus be moved against the fixed contacts L

As best shown in FIG. 4, in the region of the movable contacts 2, the slider 7 has two arms 41, 42 separated by a slot 40. On both of these arms 41, 42 movable contact members 2 of the remote switch are arranged, each arm 41, 42 carrying a single movable contact member 2 or both. movable contact members 2 of just one switching path. With the remote switch cover completely assembled, the wall 45 of the intermediate housing 21 lies in the region of the slot 40. Each of the two arms 41, 42 thus protrudes into its associated switching path and is separated from the other switching path by the wall 45 of the intermediate housing 21.

A peculiarity of the slider 7 provided in the remote switch according to the invention is that the entire first arm 41 is made as a part separate from the remaining slider, but can be attached to the remaining slider 7. This attachment can in principle be realized in any desired manner, for example, the arm 41 could be glued to the remaining slider 7.

According to a preferred embodiment illustrated in the accompanying figures, a releasable, positive fit of the arm 41 to the slider 7 is provided.

A dovetail groove 43 is incorporated into the first leg 41. In the region of the remaining slider 7 in which the leg 41 is to be attached, a guide 44 is formed which, with respect to its cross-section, coincides with the cross-section of groove 43 and is slightly smaller than this. The arm 41 can be mounted on this guide 44 and thus can be positively attached to the remaining slider 7.

The cross-sectional shape of the groove 43 and the guide 44 can be chosen as desired and can, for example, be in the shape of a hammer shown in the figures. Alternatively, the groove 43 and the guide 44 may have a trapezoidal cross-section, the longer of the parallel side edges of the trapezoid extending in the region of the bottom of the groove 43 or its corresponding shaping area 44 in order to achieve a positive connection of the arm 41 and the remaining slider 7 .

As shown in FIG. 7, when the remote switch is assembled, the slider 7 can first be inserted into the lower shell 23, then the intermediate shell 21 can be mounted and then the arm 41 can be slid onto the remaining slider 7. This avoids strenuous sliding of the slider arms 41 and 42 into the region the lower shell 23 and the intermediate shell 21, or between the upper shell and the intermediate shell 21.

In order to achieve this simple mountability of the slider 7 in the remote switch housing, it can be provided that not the entire arm 41, but only the leg section 41, namely the lower section carrying the movable contact 2, is formed as a part separate from the remaining The second leg section 41 is made in one piece with the slider 7. It is to be remembered that the second section, with the slider 7 made in one piece, with the slider 7 in the first switching position (FIG. 3), ends above the wall 45 so that when the remote switch is assembled together, the wall 45 of the intermediate casing 21 does not have to slip into the slot 40 between the two legs 41.42.

Another aspect of the invention resides in the construction of the movable contact holder 2 on the slide 7. 6, the slider 7 has movable contacts 2 of the switch path of the cage 50. Since the remote switch shown in the figures has two switch paths whose movable contacts 2 - as described, are arranged on two arms 44, 42 - each of these arms 41, 42 equipped with such a cage 50.

This cage 50 has two side walls 51, 52 extending in the sliding direction 14 of the slider 7, as if the cover plates 53, 54 connecting them. One movable contact 2 (cf. FIGS. 1, 2) or two movable contacts 2 (cf. FIG. 3) is or are arranged on an approximately rectangular plate 6, the plate 6 being attached between the side walls 51, 52 of the cage 50. Inside the cage 50 is a compression spring 55 which 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 (make contact or break contact) the respective switching path is to fulfill. If the switching path is as shown in FIG. 3, made as a switch contact, wherein the fixed contacts 1 are arranged below the lower cover 54, the plate 6 is pressed against the lower cover 54. As the slider moves to close this switching path, the movable contacts 2 come to engage the fixed contacts L Na as a result of this contact, the plate 6 can no longer move further as the slider 7 continues to move, but the compression spring 55 is compressed. The contact pressure, which pushes the movable contacts 2 against the fixed contacts 1, increases by compressing the compression spring 55.

In the design of the switching path as an opening contact, the fixed contacts 1 lie above the upper cover surface 52 of the cage 50, whereby the plate 6 is pressed against this upper cover surface 53 (cf. the first arm 41, lying to the left in FIG. 6).

The compression spring 55 is preferably designed as a helical compression spring which, at one end, bears 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 for example be designed as a leaf spring.

In the construction of the compression spring 55 as a helical compression spring, according to a preferred embodiment of the remote switch shown in the figures, the plates 6 and one of the cover plates 53, 54 of the cage 50 are provided with moldings 56 on which the ends of the compression spring 55 are mounted. they are preferably in the form of a mandrel, but may also be cylindrical pins.

The inner surfaces 57, 58 of the side walls 51, 52 of the cage extend parallel to each other and inclined at an acute angle and to the sliding direction 14 of the slider 7. This acute angle α preferably lies between 3 and 5 °.

As mentioned, then, when the movable contact 2 lies on their fixed contacts 1, these lift the plates 6 carrying the movable contacts 2 away from the cover plate 53, 54 of the cage 50 on which the abutment can occur and the compression springs 55 respectively.

During the displacement of the slider 7, which leads to the lifting of the movable contacts 2 from the associated fixed contacts 1, the movable contacts 2 do not first lift from the fixed contacts 1: the plates 6 and the movable contacts 2 are pushed away from the compression spring 55 against the fixed contacts 1; as the slider 7 continues to move, the compression spring 55 is released. Only when one of the cover plates 53, 54 of the client 50 abuts the plate 6, the plate 6 is moved and the movable contacts 2 are lifted from the fixed contacts 1.

During, prior to this lift, the existing movement of the client 50 against the plate 6 slides the inner surfaces 57, 58 of the side walls 51, 52 of the cage along the plates 6. Due to the inclination of the inner surfaces 57, 58 against the sliding direction 14, the plate 6 moves perpendicularly to the direction 14 scrolling. The movable contacts 2 are thereby displaced parallel to the surfaces on which the fixed contacts 1 are located. In this lateral, perpendicular to the feed direction 14 or lifting motion, the relative movement of the movable contacts 2 relative to the fixed contacts 1, tiny welds tear between the contacts i, second

When moving the slider 7, which leads to the contacting of the movable contacts 2 with the fixed contacts i, first, as already explained, the movable contacts 2 urge the fixed contacts 1, and with the sliding 7 moving further, the compression spring 55 acting on the plate Also, during this compression, the inner surfaces 57, 58 slide along the plates 6, causing the movable contacts 2 to extend perpendicular to the direction of travel 14. Since the movable contacts 2 are in contact with the fixed contacts, the movable contacts 2 rub against the fixed contacts 1, This results in cleaning of the contact surfaces of both contacts 1, 2. This contributes to achieving a low contact resistance or to maintaining this low resistance during use of the remote switch.

Claims (8)

PATENT CLAIMS An electromechanical remote switch comprising at least one fixed contact (1) and one cooperating monostably movable contact (2), which is arranged on the slider (7) and moved against the fixed contact (1), the slider (7) being by means of a return spring (20) pushed in the direction of the first switching position, the bistable actuating means incorporating a slide (15) into the surface of the slider (7) and engaging in this slide (15) a pin (16) mounted on the cradle (17). ), which is rotatably mounted parallel to the surface of the slider (7) including the slider (15), and wherein the slider (15) comprises a tip (24) extending in the sliding direction (14) of the slider (7) connected thereto by straight sections (25); 29), arranged in a V-shape and separated from each other by substantially V-shaped abutments (27), further comprising a magnetic system (8) with a guide coil (9) and an anchor (10) moved therethrough. ) that is associated with a runner (7), that the gate (15) comprises two curves (26, 28) which are connected to straight sections (25, 28) and open to one another in the V-shaped abutment region (27), that the bottom of one of the straight of the sections (25, 29) of the gate (15) is provided with a ramp (31) which starts in the area connected to the curvature (26, 28), rises in the direction of the tip (24) and ends with the edge (33) (32) a V-shaped abutment (27) lying in the region of the second straight section (29, 25), and further comprising a spring (30) switching the cradle (17) in the direction of one of the two wings of the gate (15). Electromechanical remote switch according to claim 1, characterized in that the gate (15) is substantially heart-shaped. Electromechanical remote switch according to claim 1 or 2, characterized in that the spring (30) is designed as a short-circuiting compression spring which is supported at one end against the inner wall of the lower housing (23) of the remote switch housing and at the other end against a cradle. (17). Electromechanical remote switch according to claim 3, characterized in that pin-shaped formations (37) are provided on the cradle (17) and the lower housing (23), onto which the ends of the spring (30) are inserted. Electromechanical remote switch according to one of the preceding claims, characterized in that the return spring (20) is designed as a short-circuiting compression spring, which bears at its first end on a part of the housing, preferably on the intermediate casing (21) and bears at its expensive end. per runner (7). An electromechanical remote switch according to claim 5, characterized in that it comprises pin-shaped formations (22) arranged on the slider (7) and on the cover on which the ends of the return spring are inserted. Electromechanical remote switch according to one of the preceding claims, characterized in that the cradle (17) comprises two cylindrical shapes (18) which extend into recesses (19) incorporated into the remote switch housing, the recesses having a slightly larger diameter than the shapes. (18). Electromechanical remote switch according to claim 7, characterized in that the depressions (19) have a groove shape and are incorporated into the faces facing the intermediate housing (21), spaced apart plates (24) which are formed on the inner wall of the lower one. and that spaced plates (24 ') are formed on the intermediate shell (21), the plates (24, 24') of the lower shell (23) and the intermediate shell (21) being adjacent to the intermediate shell (21) mounted on the lower shell (24). the housing (23) aligned with each other. 8 drawings