EP0922315B1 - Electromechanical connecting device - Google Patents

Description

The invention relates to an electromechanical connecting device according to the preamble of claim 1 Art.

A connection device of this type is described in EP 0 573 471 B1. Through the known connection device, the from a switching device, which the Function of a conventional socket takes over, and a release device, which functions as a connector takes over, there is a connecting device created that has a very low depth and which also meets high security requirements.

According to the electromechanical connection device EP 0 573 471 B1 is both mechanical and also the electrical contact via magnets. For this are both a work sled with power supply contacts is connectable, as well as the switching magnets electrically conductive. The power connection is made directly via contact caps to release magnets in the release device conducted, which are also electrically conductive. Disadvantageous with this current supply, however, is that an electrical Conductivity in the event of a short circuit to one Loss of heat sensitive magnetic components leads. In addition, the previously known device is due the voltage and power line via the contact caps and the magnets are still relatively wide.

Coded magnets mean that several small ones Magnetic parts with different polarities into one Total magnets are connected. A magnetic attraction can only be opposed by accordingly polarized and similarly coded magnetic parts can be achieved. This is through the interaction of the Magnets in the switching device and in the release device realized accordingly. Compared to known ones No magnetic attraction is generated to magnets.

This ensures that the work sled only when the triggering device approaches or touches down on the switching device from its rest position lifted off and brought into the electrical switching position on the two poles of the contact pair the switching device is brought current. This stream is then over the poles of the contact pair of the tripping device directed to the consumer. After taking off the release device and thus after removal of the Magnetic force causes the work sled to return to the rest position with which the power supply to the two poles of the contact pair is interrupted.

The known electromechanical connection device works very safely, especially when the electrical Contact pairs and thus their poles from the coded magnets be arranged separately. If very high and unexpected surges, e.g. a short circuit, however, it could become one in extreme situations Gluing or welding of parts in the release device come. In such a case, it could happen that the work carriage after removing the Trigger device no longer drops, with which electricity on the exposed current-carrying pole. So that exists Risk of electrical accidents.

Even if such a situation occurs in practice with a proper handling is unlikely to occur present invention nevertheless based on the task Electromechanical connection device mentioned at the beginning to improve in such a way that even in an extreme situation, in which there is a sticking of the work sled could come in the powered position, electrical Avoid accidents, especially a power cut to reach the poles.

According to the invention, this task is characterized by Part of claim 1 mentioned features solved.

Through the fuse part according to the invention in the switching device in cooperation with the corresponding opposite in the release device is reliably avoided that if the work carriage sticks in the current-switched position of the current-carrying pole of the switching device is still under power. The inventors left thereby from the knowledge that a corresponding "normal" magnet in cooperation with a ferromagnetic Material or another magnet and - if necessary - has a more extensive magnetic field, especially if high-quality magnets are used compared to the coded switching magnets. This means the fuse part in the switching device is always the first of its counterpart in the release device tightened and then stays in position longer than the coded switching magnets on the work sled. However, since the safety part of the work sled and thus also of the switching magnet and also of the Power supply is independent, it definitely falls a separation of the release device in its rest position back. Now the sledge remains in its current-switched position and does not fall into its rest position back, so that alone returning to the rest position Securing part for a deliberate short circuit and thus for a power cut to the exposed contact elements to care. All that is required is to provide suitable power lines for this purpose. So can e.g. B. if there is no consumer, the current through the welded sled from top to bottom of the contact points. However, since that Security part has moved back to its rest position and thus is under the work sled, it can be in this Position the two poles of the contact pair of the switching device bridge. In this way there is a short circuit, through the whole at a corresponding point Power supply is interrupted.

This can be done in a simple manner in that Switching device or one with the switching device connected part of a fuse is arranged blows in the event of a short circuit. Such fuses, the accordingly in general live lines are general known.

A simple constructive and space-saving arrangement and Training of the securing part can consist in that the securing part in a recess in the work carriage, preferably in a central area.

For a simple and perfect function of the safety part one becomes under or behind the safety part one on the side facing away from the triggering device Magnets or a part made of a ferromagnetic material provide through which the securing part safely into the Rest position is brought back. It's just for that too ensure that the magnetic attraction between the Securing part and the one behind or below it Magnet or the ferromagnetic material is lower than the magnetic attraction from the counterpart in the release device. This can be done in a simpler way Way by the magnet strength of the magnet and / or the reach the respective distances.

A very advantageous development of the invention can consist in that the securing part on the circumference with protruding Studs or pins is provided, the securing part moving from rest to electrically switched position a rotational movement around its Performs longitudinal axis and with the work slide with Cut-outs adapted to the size or shape of the nubs or pins has in the current-switched position of the Work slides pick up the knobs or pins.

By twisting the securing part during its Movement provides additional security. For this it is only necessary to control the rotation that in the switched-on state the knobs or pins are in such a position that they are in the corresponding recesses are in the work sled. in the The coded switching magnets normally return when disconnected the trigger device first returns to its rest position, especially if it is supported by return springs are. The securing part follows accordingly later a twist. Through this twisting it is achieved that the knobs or pins are no longer in the rest position the recesses are aligned. Rather, press in this situation the knobs or pens on the work sled and hold this in its rest position. This means it can be in the rest position also not to undesirable vibrations the work carriage, e.g. due to external shocks or shocks. The work sledge lies rather, firmly clamped between the knobs or pins the securing part and the lower or rear wall the switching device.

Conversely, when activated this way, that first the fuse part in the current switched Must move position and only then the work sled can follow. Only by turning the Fuse part on the way to the electrically switched Position the cutouts of the work sled slide over the knobs or pins and thus align, after which the electrical circuit takes place.

Advantageous further developments and refinements result itself from the other subclaims and from the following based on the drawing embodiment described.

Fig. 1

einen Schnitt nach der Linie I-I durch die Schalteinrichtung und die daraufgesetzte Auslöseeinrichtung

Fig. 2

eine Draufsicht auf die Schalteinrichtung

Fig. 3

einen Schnitt nach der Linie III-III der Fig. 2 mit dem Arbeitsschlitten in Ruhestellung

Fig. 4

einen Schnitt entsprechend dem nach der Fig. 3 mit aufgesetzter Auslöseeinrichtung im Schnitt und dem Arbeitsschlitten in stromgeschaltetem Zustand

Fig. 5

einen Schnitt durch die Schalteinrichtung

Fig. 6

einen Schnitt nach der Linie VI-VI der Fig. 5 durch den oberen Gehäuseteil der Schalteinrichtung

Fig. 7

einen Schnitt nach der Linie VII-VII der Fig. 5 durch den oberen Gehäuseteil der Schalteinrichtung

Fig. 8

einen Schnitt nach der Linie VIII-VIII der Fig. 5 durch den oberen Gehäuseteil der Schalteinrichtung

Fig. 9

eine Draufsicht auf den Arbeitsschlitten

Fig. 10

einen Schnitt nach der Linie X-X der Fig. 9

Fig. 11

einen Schnitt nach der Linie XI-XI der Fig. 9

Fig. 12

eine vergrößerte Darstellung des Sicherungsteiles mit einem wendelförmigen Stift zu dessen Führung

It shows:

Fig. 1

a section along the line II through the switching device and the trigger device placed thereon

Fig. 2

a plan view of the switching device

Fig. 3

a section along the line III-III of FIG. 2 with the work carriage in the rest position

Fig. 4

a section corresponding to that of FIG. 3 with the release device in section and the work carriage in the current-switched state

Fig. 5

a section through the switching device

Fig. 6

a section along the line VI-VI of FIG. 5 through the upper housing part of the switching device

Fig. 7

a section along the line VII-VII of FIG. 5 through the upper housing part of the switching device

Fig. 8

a section along the line VIII-VIII of FIG. 5 through the upper housing part of the switching device

Fig. 9

a top view of the work sled

Fig. 10

a section along the line XX of FIG .. 9

Fig. 11

a section along the line XI-XI of Fig. 9th

Fig. 12

an enlarged view of the securing part with a helical pin to guide it

The electromechanical connection device consists of a switching device 1, the function of a conventional Socket replaced and generally at one desired location is permanently installed, provided that it is not as an adapter for connection to conventional sockets or serves as an extension cable, and from a release device 2, the function of a conventional connector which is generally replaced with a consumer connected or which is directly to a consumer is arranged. Once an electrically conductive connection between the switching device 1 and the triggering device 2 is created, the respective with the triggering device 2 connected consumers accordingly with Electricity supplied.

Basically, this switching device 1 and the associated one Tripping device 2 of the same design principle like the electromechanical described in EP 0 573 471 B1 Connecting device. So the switching device points 1 a closed assembly, which in no closer shown way from a housing and a cover consists. In the switching device 1 opens for connection with a power source a cable connection 3. The release device is also generally formed in two parts and provided with a cable connection 6, if the trigger device 2 is not itself part of a consumer represents or built directly into the consumer is.

At rest, i.e. if the trigger device 2 is not is placed on the switching device 1, is a work slide 4, on the switching magnet 5 in the form of coded Magnetic parts 5a-5d are arranged by a ferromagnetic retaining plate 7 on the bottom of the housing held. The ferromagnetic retaining plate can also be a magnetic ring. As can be seen from FIG. 2 is, there are two coded switching magnets 5 each four coded magnetic parts 5a-5d diametrically opposite. Each coded magnet 5, consisting of the group of four, has two north and two south poles, the Poles are arranged to each other so that they are different Adjacent polarities. The coded Magnets 5 are on the inside of the switching device 1 the work carriage 4 arranged so that they at their Movement in corresponding holes (see e.g. Fig. 1).

Two diametrically opposite return springs 8, which also led into holes in the switching device are, ensure that the work carriage 4 in addition by a corresponding spring force in the non-switched State is held on the ferromagnetic plate 7. At the same time, they ensure that after a decrease in Tripping device 2 of the switching device 1 of the work carriage 4 again for investment on the ferromagnetic Plate 7 is brought. In Figures 5 to 11 is the current flow in the switching device up to one current-carrying pole 9 and a neutral pole 10 as a neutral conductor more apparent. The poles 9 and 10 are designed as pins and protrude from the top of the switching device, essentially flush with the top, from this frankly.

The current is introduced from the cable connection 3 to a contact element 11 (neutral conductor) and a contact element 12 (phase) in the upper housing area. The current flow over bridges and contact elements is for reasons of clarity hereinafter only for the input contact 12 shown. Is located under the input contact 12 on the work slide, a contact element 13, which over an electrical bridge to another contact element 14 conducts electricity on the work sled. About that Contact element 14 is located in the upper housing part Another contact element 15, which in turn has a arcuate bridge 16 with a contact 17, the also located in the upper housing part, in electrical Are in contact. Is located under the contact element 17 on the work slide 4, a contact element 18, which in turn over an electrically conductive bridge with a contact element 19 is connected to the work slide. The Contact element 19 is located below the surface of the switching device leading poles 9. As from the Figures 9 and 11 can be seen, there are the contact elements 13, 14 and 18, 19 on elastic tongues of the Working sled through corresponding slots in the Working sledges are formed. This way is at Current supply given a correspondingly rich contact.

Basically, the current flow from the upper housing part the switching device over the work slide and back to the upper housing part and thus to the pole 9 also take place over a simple bridge. Execution over the two bridges and the arched bridge part 16 in the upper part of the housing, however, have the advantage that this way the distances required by the current strength in the idle state or not switched on can be reduced by half. The semicircular Bridge 16 is only in this for constructional reasons If necessary, at the pole 9 or 10 "come over". The contact elements are also shown in FIG. 9 and bridges on the work sled for power supply to the pole 10 can be seen. 5 is also the ring-shaped in the upper part of the drawing Bridge can be seen for this.

In addition to this basically from the aforementioned European patent specification works has the present electromechanical connection device a securing part 20. The safety part 20 is either designed as a safety magnet, the with corresponding to ferromagnetic plates or counterparts works together or it consists of a disc ferromagnetic material. In the present embodiment is the securing part 20 from a disk formed from a ferromagnetic material and in the Tripping device 2 is located with the safety part 20 cooperating magnet 21. Another return magnet 22 is located in the lower part of the switching device 1. As can be seen from the figures, is located the securing part 20 in the central area of the switching device and the magnet 21 in the release device 2 lies when the trigger device is placed on the Switching device 1 directly above it. In the same way the return magnet 22 is located directly under the securing part 20 (see in particular Figures 1, 3 and 4).

The mode of operation is in particular from FIGS. 2 to 5 of the securing part 20 can be seen. From the arched Contacts 16 lead safety lines on both sides 23a and 23b down to the lower housing area the switching device 1 and from there on the ground along inwards to the area of the securing part 20. The securing part 20 is with a central bore Mistake. This hole serves as a guide on a mandrel 24. The mandrel 24 has a helical shape on its circumference. This spiral shape works with a corresponding counter spiral the correspondingly helical central bore in the securing part 20 together. The Securing part 20 is still on its circumference with two diametrically opposite knobs or pins 25 Mistake. The mandrel 24 is with the lower portion of the housing the switching device 1 firmly connected. Through the Helical shape of the mandrel 24 and the helical bore in the securing part 20, the securing part moves with it a corresponding twist down and up. On In this way, the scope of the security part 20 protruding two pins 25 in their circumferential position accordingly twisted. The securing part now works in the following way:

In the idle state, see Fig. 3, the fuse part is on the work slide 4 and pushes it because of this the magnetic force of the securing part 20 in cooperation with the magnet 22, the working slide 4 on the underside of the housing the switching device 1. The trigger device 2 placed on the switching device 1, so the magnet 21 attracts the securing part 20, with which the securing part 20 together with a corresponding slight rotational movement upwards. The work sledge 4 follows, for which the coded magnets 5, which with correspondingly opposite coded magnets 26 cooperate in the release device 2. To unfold the required magnetic force is the coded one Magnets 26 in the same way with two groups of four four individual magnets combined, the individual magnets corresponding to the individual magnets 5a-5c Switching device are polarized in opposite directions.

By pulling the work sled to the bottom the upper housing part of the switching device 1 is also the connection of the input contacts via the contact elements 11 and 12 to the poles 9 and 10 created. The Current path for the phase arriving at input contact 12 is from the input contact 12 to the contact element 13 on the work slide and there to the contact element 14, then back to the upper part of the housing Contact element 15 and over the arcuate bridge 16 to the contact element 17. From there the current reaches back to the contact element 18 on the work slide and from there via the contact element 19 back to the pole 9 arranged in the upper part of the housing from the input contact 11 to the pole 10 takes place in equivalent Wise.

If the triggering device 2 is activated by the switching device 1 removed, the work slide 4 falls first due to the lower magnetic force of the coded magnets which breaks the circuit. Then falls also with a corresponding twist the securing part 20 since it is attracted to the magnet 22. Here there is a slight twist, which causes the circumferentially protruding pins 25 on the work sled hang up in the lower position. In switched Condition interfere with the protruding pins 25 Movement of the carriage 4, however, not because in In this position, they are located in recesses 27 in the work carriage 4, the larger shapes of the pens 25 are adapted. This situation can be seen from FIG.

For some reason the work sled remains e.g. by sticking, even when the release device is removed 2 in its upper position, it means that the current flow is passed to poles 9 and 10 is. Normally, poles 9 and 10 would be the current contact to corresponding counter contacts 28 and 29 in the Create trigger device to the desired consumer to supply with electricity. In the absence of the release device 2 would now be the risk of electricity accidents the exposed poles 9 and 10. So anyway in this case no current comes to the poles 9 and 10, the securing part 20 is provided. After removing the Tripping device 2 is namely the safety part 20, that works independently of the work slide 4 and for this purpose in a corresponding hole in the work slide can move freely, attracted by the magnet 22. This means that it returns to its rest position and sits on the lower part of the housing. However, since - in contrast to the normal rest position of the work sled 4 in its lower position according to FIG. 3 - in one such a case when the work carriage 4 on the Underside of the upper part of the fuse part 1 16 current remains on the ring arcing contacts. The Current from the two ring arcing contacts 16 is via the Security line 23a and 23b down to below Securing part 20 passed. This means once the fuse part 20 in its rest position after removing the trigger device 2 returns, a wanted short circuit created between the two poles 9 and 10. This Short circuit can then be used to cover the entire Power supply is interrupted. For example take place in that in the cable feed 3 or on the input side in the switching device 1 for the power supply a glow fuse 30 known per se is provided which in this case burns out and thus the power connection interrupts safely.

The securing part 20 lies in a central recess of the work sled 4.

Claims (7)

1. Electromechanical connecting device having a switching device (1), which can be connected to a current source via power supply contacts (3) and has switching magnets (5) arranged on a working carriage (4), and having a triggering device (2) which has triggering magnets and can be electrically connected to a consumer and by means of which the switching magnets can be brought from a rest position into a working position against a restraining force, in the presence of which it is possible to make the contact between pairs of contacts, and thus to make the electric connection between the switching device and the triggering device, the switching magnets cooperating by means of a special coding with the triggering magnets arranged in the triggering device for the purpose of realizing specific magnetic fields for the switching operation, characterized in that in the switching device (1) at least one safety part (20) in the form of a safety magnet or a ferromagnetic material can be displaced in the direction of the triggering device (2) from a rest position into a live position by a matching magnet (21) or a ferromagnetic part arranged in the triggering device (2) in such a way that, with the working carriage (4) remaining in the live state, when the safety part (20) returns to the rest position it effects an intentional short circuit between the poles (9, 10) of the pair of contacts of the switching device (1) even with the triggering device (2) removed.
2. Electromechanical connecting device according to Claim 1, characterized in that a glow protection device (30) which burns through in the event of a short circuit is arranged in the switching device (1) or a part connected to the switching device (1).
3. Electromechanical connecting device according to Claim 1, characterized in that the safety part (20) is situated in a central cutout in the working carriage (4).
4. Electromechanical connecting device according to Claim 3, characterized in that a restraining magnet (22) or a ferromagnetic restraining part is arranged behind or below the safety part (20) on the side of the switching device (1) averted from the triggering device (2).
5. Electromechanical connecting device according to Claim 1, characterized in that the safety part (20) is provided on the circumference with projecting knobs or pins (25), the safety part (20) executing a rotary movement about its longitudinal axis when moving from the rest position into the electrically switched position, and the working carriage (4) having cutouts (27) which are matched to the size and shape of the 15 knobs or pins and hold the knobs or pins (25) in the live position of the working carriage (4).
6. Electromechanical connecting device according to Claim 5, characterized in that the safety part (20) can be moved in the fashion of a helix or spiral during its movement from the rest position into the electrically switched position.
7. Electromechanical connecting device according to Claim 6, characterized in that the safety part (20) is mounted on a mandrel (24), the rotary movement of the safety part (20) being performed by a spiral groove/pin connection between the mandrel (24) and the safety part (20).

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