EP2747104A1 - Multipole switching device - Google Patents

Abstract

The device has a conversion module connected with a locking component. A front cover is provided with an operation unit. A cam control mechanism is provided with a multi-pole switch device shell. A multi-pole switching module is connected with the front cover. A spring terminal is connected with a mechanical drive terminal that is provided with a screw thread. A mechanical driving pin is connected with the spring terminal that is equipped in a movable front cover groove. A movable cover is connected with a blocking sheet. The front cover is formed with a detecting hole.

Description

The invention relates to a multi-pole switching device for a busbar system.

Busbar systems are widely used and allow switchgear to be mounted directly on the rail during installation. The dimensioning of the busbar is primarily dependent on the current load. The cross section of a busbar or a busbar depends not only on the current load but also on the mechanical loads and on the type of equipment connected. In switchgear several busbars can be laid parallel. The busbars are usually made of aluminum or copper and are usually uninsulated, which simplifies the assembly of connection and switching elements.

Conventional multi-pole switching devices can be used to connect electrical devices to the busbar system and protect against overload by, for example, an electrical fuse is interposed to secure the electrical device. This component can be replaced by an installer if necessary.

When disconnecting the power and changing the fuses, there must be no danger for an operator.

This object is achieved by a multi-pole switching device with the features specified in claim 1.

The invention accordingly provides a multi-pole switching device for a busbar system with a mounted on the housing of the switching device movable front cover, which in an on state of the multi-pole switching device at least one receiving unit for receiving a component, in particular a fuse, locked.

Accordingly, in a switched-on state of the multipolar switching device, a fitter does not have the possibility of replacing a component, for example an electrical fuse, and is therefore protected against touching live parts.

In one possible embodiment of the multi-pole switching device according to the invention, the movable front cover of the multi-pole switching device can be actuated by an operating unit which moves an existing within the housing of the multi-pole switching device shift linkage in opposite directions or the front cover such that switching contacts of the multi-pole switching device in the on state of the multi-pole Switching device are closed.

In a further possible embodiment of the multi-pole switching device according to the invention covers the movable front cover of the multi-pole switching device in the on state of the multi-pole switching device access openings, which are provided for mechanical actuation of spring terminals for clamping connecting lines and / or terminal screws for tightening connection lines.

In a further possible embodiment of the multi-pole switching device according to the invention moves when the spring clamp closed a web of movable front cover upon actuation of the control unit for switching the multi-pole switching device in a corresponding recess of the mechanical drive of the spring clamp, so that it is ensured that all spring terminals are closed when you turn.

Alternatively, the web may also be provided on a section, in particular a drive, of the spring-loaded terminal, and the front cover may have a corresponding recess.

In a possible embodiment of the multi-pole switching device according to the invention moves when the spring clamp terminal of the web of the movable front cover when pressing the control unit to turn on the multi-pole switching device not in the corresponding recess of the mechanical drive of the spring clamp, so switching on the multi-pole switching device is blocked and the switching device in remains switched off.

In a further possible embodiment of the multi-pole switching device according to the invention, the movable front cover on blocking lugs, which block in the on state of the multi-pole switching device actuation of the receiving units of the multi-pole switching device.

Alternatively, the receiving units may each have a blocking nose.

In a further possible embodiment of the multi-pole switching device according to the invention, the receiving units of the multi-pole switching device in the off state of the multipolar switching device are each movable against an associated outgoing contact to close an associated circuit, after an associated switching contact by the opposite or the same direction to the front cover movable Shift linkage is closed.

In a further possible embodiment of the multi-pole switching device according to the invention, the movable front portion of the movable switching device on test holes, which in the on state of the multi-pole switching device each contacting the outgoing contact with a Test pin for checking the voltage applied.

In a further possible embodiment of the multi-pole switching device according to the invention, the switching contacts of the multi-pole switching device are each formed by a switching link connected to the switching bridge, which connects in the on state of the multi-pole switching device a Fußkontakt the respective pivotable drawer with a busbar contact of the multi-pole switching device.

In a further possible embodiment of the multi-pole switching device according to the invention, in each case a component, in particular an electrical fuse, can be inserted into the receiving unit of the multi-pole switching device in its switched-off state.

In a further possible embodiment of the multi-pole switching device according to the invention, a display surface is attached to the shift linkage, which visually indicates to a user the actual switching state of the multi-pole switching device regardless of the position of the operating unit and the front cover by a present in the front cover window.

In a further possible embodiment of the multi-pole switching device according to the invention, the movable front cover has a sealing opening for sealing the multi-pole switching device.

In a further possible embodiment of the multi-pole switching device according to the invention, the receiving unit of the multi-pole switching device is unlocked in the switched-off state of the multi-pole switching device and pulled out via a guide groove from the housing of the multi-pole switching device to a component, in particular an electrical fuse, inserted into the withdrawn, but not removable and thus captive receiving unit.

In a further possible embodiment of the multi-pole switching device according to the invention, a compression spring or leaf spring is provided on the foot contact of the receiving unit, which provides a predetermined contact pressure between a component inserted into the receiving unit and the foot contact of the receiving unit and the inserted component and the outgoing contact of the receiving unit.

In a further possible embodiment of the multi-pole switching device according to the invention, the multi-pole switching device from an off state by operating the control unit in the on state can only be transferred if all receiving units of the multi-pole switching device are moved to their respective outgoing contact and also all spring terminals for connecting a conductor the outgoing contact are connected.

In a further possible embodiment of the multi-pole switching device according to the invention, the receiving unit for receiving a component is formed by a drawer, in which a component, in particular an electrical fuse, can be used in the switched-off state of the multi-pole switching device.

In a further possible embodiment of the multi-pole switching device according to the invention, the receiving unit, in particular drawer, is pivotable about an axis and pulled out of the housing of the multi-pole switching device in its off state for insertion of the component.

In one possible embodiment of the multi-pole switching device according to the invention, the operating unit is a rocker arm.

In an alternative embodiment of the multi-pole switching device according to the invention, the operating unit is a rotary drive.

In the following, possible embodiments of the multi-pole switching device according to the invention will be explained in more detail with reference to the attached figures.

Fig. 1

eine Vorderansicht auf ein Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes in dessen eingeschaltetem Zustand;

Fig. 2

eine Vorderansicht für das in Fig. 1 dargestellte Ausführungsbeispiel eines mehrpoligen Schaltgerätes in dessen ausgeschaltetem Zustand;

Fig. 3

ein Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes in dessen eingeschaltetem Zustand;

Fig. 4

eine Ansicht ohne Gehäusedeckel für das in Fig. 3 dargestellte Ausführungsbeispiel eines mehrpoligen Schaltgerätes in dessen ausgeschaltetem Zustand;

Fig. 5

eine Ansicht eines bei einer möglichen Ausführungsform des erfindungsgemäßen mehrpoligen Schaltgerätes verwendeten Schaltgestänges;

Fig. 6

eine Seitenansicht auf ein Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes von links;

Fig. 7

eine Seitenansicht auf ein Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes von rechts;

Fig. 8

eine Ansicht auf ein Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes von oben;

Fig. 9

eine Ansicht auf ein Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes von unten;

Fig. 10

eine Detailansicht von oben auf eine verriegelte Aufnahmeeinheit innerhalb einer Frontabdeckung gemäß einem Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes;

Fig. 11

eine Schnittansicht entlang der Schnittlinie H-H der in Fig. 10 dargestellten Aufnahmeeinheit in dessen verriegeltem Zustand;

Fig. 12

eine Schnittansicht einer Aufnahmeeinheit gemäß der Schnittlinie H-H bei dem in Fig. 10 dargestellten Ausführungsbeispiel eines erfindungsgemäßen mehrpoligen Schaltgerätes;

Fig. 13A, 13B, 13C

Ansichten zur Darstellung einer geöffneten Feder-zugklemme zur Erläuterung der Funktionsweise bei einem Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes;

Fig. 14A, 14B, 14C

Ansichten einer geschlossenen Federzugklemme zur Erläuterung der Funktionsweise bei einem möglichen Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes;

Fig. 15

eine Darstellung eines Implementierungsbeispieles eines bei dem erfindungsgemäßen mehrpoligen Schaltgerät angewendeten Abgangskontaktes;

Fig. 16

ein Ausführungsbeispiel eines erfindungsgemäßen mehrpoligen Schaltgerätes zur Darstellung der Funktionsweise einer bei dem erfindungsgemäßen mehrpoligen Schaltgerät verwendeten betätigbaren Bedieneinheit;

Fig. 17

ein Ausführungsbeispiel des erfindungsgemäßen mehrpoligen Schaltgerätes zur Darstellung der Funktionsweise einer von dem erfindungsgemäßen mehrpoligen Schaltgerät verwendeten betätigbaren Bedieneinheit;

Fig. 18A, 18B

Detailansichten zur Darstellung einer bei der Frontabdeckung des erfindungsgemäßen mehrpoligen Schaltgerätes vorgesehenen Plombiereinrichtung.

Show it:

Fig. 1

a front view of an embodiment of the multi-pole switching device according to the invention in its on state;

Fig. 2

a front view for the in Fig. 1 illustrated embodiment of a multi-pole switching device in its off state;

Fig. 3

An embodiment of the multi-pole switching device according to the invention in its switched-on state;

Fig. 4

a view without housing cover for the in Fig. 3 illustrated embodiment of a multi-pole switching device in its off state;

Fig. 5

a view of a shift linkage used in a possible embodiment of the multi-pole switching device according to the invention;

Fig. 6

a side view of an embodiment of the multi-pole switching device according to the invention from the left;

Fig. 7

a side view of an embodiment of the multi-pole switching device according to the invention from the right;

Fig. 8

a view of an embodiment of the multi-pole switching device according to the invention from above;

Fig. 9

a view of an embodiment of the multi-pole switching device according to the invention from below;

Fig. 10

a detailed view from above of a locked receiving unit within a front cover according to an embodiment of the multi-pole switching device according to the invention;

Fig. 11

a sectional view along the section line HH of in Fig. 10 shown receiving unit in its locked state;

Fig. 12

a sectional view of a receiving unit according to the section line HH in the in Fig. 10 illustrated embodiment of a multi-pole switching device according to the invention;

Figs. 13A, 13B, 13C

Views for illustrating an open spring-Zugklemme to explain the operation in one embodiment of the multi-pole switching device according to the invention;

Figs. 14A, 14B, 14C

Views of a closed spring clamp for explaining the operation in a possible embodiment of the multi-pole switching device according to the invention;

Fig. 15

a representation of an implementation example of an applied in the multi-pole switching device output contact according to the invention;

Fig. 16

An embodiment of a multi-pole switching device according to the invention for illustrating the operation of an actuatable operating unit used in the multi-pole switching device according to the invention;

Fig. 17

An embodiment of the multi-pole switching device according to the invention for illustrating the operation of an operable operating unit used by the multi-pole switching device according to the invention;

Figs. 18A, 18B

Detailed views to illustrate a provided at the front cover of the multi-pole switching device according to the invention sealing device.

In the following, possible embodiments of the multi-pole switching device according to the invention for a busbar system will be described in detail with reference to the accompanying figures.

Fig. 1 shows a front view of an example of a multi-pole switching device 1 for a busbar system according to the invention. At the in Fig. 1 shown front view, the multi-pole switching device 1 is in the on state after a provided on the multi-pole switching device 1 control unit 2, which is, for example, a rocker arm, has been manually pivoted to the on state. This in Fig. 1 shown multi-pole switching device 1 can be mounted on several parallel busbars of a busbar system. For example, the multi-pole switching device 1 can be mounted on three parallel busbars. In the assembled State is in the Fig. 1 right side of the multi-pole switching device 1 below (U) and in Fig. 1 shown left side of the multi-pole switching device 1 above (0). When assembled, therefore, the in Fig. 1 shown shift lever 2 pivoted to turn on the switching device 1 upwards. Fig. 1 shows a front cover 3 of the multi-pole switching device 1 from above or from the front from the view of the user or mechanic. The front cover 3 is located on the side facing away from the busbars side of the multi-pole switching device 1. In the multi-pole switching device 1 according to the invention, the front cover 3 is movably mounted on the housing of the switching device 1. The front cover 3 can be laterally or laterally displaced in the multi-pole switching device 1 according to the invention. To reach the in Fig. 1 shown switched state of the multi-pole switching device 1 moves the front cover 3 to the left or above (0). When you turn off the multi-pole switching device 1, for example, by pressing the control unit 2, the front cover 3 moves to the right or down (U). In the multi-pole switching device 1 there are a plurality of receiving units 4-1, 4-2, 4-3, which are each provided for receiving a component, in particular a fuse. The receiving units 4-1, 4-2, 4-3 can be, for example, drawers into which a component, in particular an electrical component, can be inserted. The component may be, for example, a fuse.

In the multi-pole switching device 1 according to the invention, the movable front cover 3 locks the receiving units 4-1, 4-2, 4-3 in the switched-on state of the multi-pole switching device 1, so that no components can be inserted or removed. When switched on, therefore, the installer does not have the opportunity to accidentally replace components, especially electrical fuses, and thus does not expose himself to the risk of a current or voltage shock. At the in Fig. 1 illustrated embodiment is in the multi-pole switching device 1 is a three-pole Switching device 1, which can be mounted on three parallel current busbars. The number of receiving units 4-i corresponds to the number of parallel busbars. The number of poles or current busbars and the corresponding number of recording units 4-i can vary. For example, the switching device 1 may also be designed as a two-pole switching device.

If the operating unit 2, for example, a rocker arm, operated by the operator to the multi-pole switching device 1 in an on state according to Fig. 1 to spend, moves the front cover 3 upwards and locks the receiving units 4-i, in particular drawers, for example, each using a mounted on the front cover 3 pin.

The movable front cover 3 of the multi-pole switching device 1 can be actuated by the operating unit 2, wherein a present within the housing of the multi-pole switching device 1 shift linkage is moved in opposite directions or the same to the front cover 3 such that switching contacts of the multi-pole switching device 1 in the on state of the multi-pole switching device 1 are closed. An embodiment of such a shift linkage is in Fig. 5 shown.

In the switched-on state of the multi-pole switching device 1, as it is in Fig. 1 is shown, the movable front cover 3 of the multi-pole switching device 1 access openings to the housing of the multi-pole switching device 1, which are provided for mechanical actuation of spring terminals for clamping of leads and / or terminal screws for tightening connection lines. How to get in Fig. 1 can recognize, the front cover 3 access openings 5-1, 5-2, 5-3, which are moved to the left in the on state, so that the front cover 3 at these points access openings in the housing of the multi-pole switching device 1 obscured. In one possible embodiment, these access openings are provided for mechanical drives of spring terminals for clamping connection lines. In an alternative embodiment, these access openings may be provided within the housing of the multi-pole switching device 1 for terminal screws for tightening connection lines. Using the connection cables, it is possible to connect any devices to the busbar system.

How to get in Fig. 1 recognize, the movable front cover 3 of the multi-pole switching device also test holes 6-1, 6-2, 6-3, which allow in an on state of the multi-pole switching device 1 each contacting a outgoing contact with a test pin for checking an electrical voltage applied there , At the in Fig. 1 illustrated three-pole switching device 1, the front cover has a corresponding number of test holes 6-1, 6-2, 6-3, which allow contacting of an associated outgoing contact, for example with a test pin. In this way, the installer or the operator in the switched-on state can check whether an electrical voltage U is present at the outgoing contact of the respective receiving unit 4-i or not. If there is no voltage at the outgoing contact, this may be because, for example, no electrical component has been inserted into the corresponding receiving unit 4-i. Furthermore, there is the possibility that the electrical component has been incorrectly inserted into the receiving unit 4-i. For example, an installer may insert into the test holes 6-i a normalized single-pole voltage tester to check whether a voltage is present at the respective outgoing contact with which the connected electrical device can be operated.

In a possible embodiment of the multi-pole switching device 1 according to the invention is on the in Fig. 5 shown shift linkage 9, a display surface 17 is mounted, the indicated by a present in the front cover 3 viewing window 7 a user the actual switching state of the multi-pole switching device 1, regardless of the position of the control unit 2 and the front cover 3 optically. For example, in the switched-on state of the multi-pole switching device, the user is shown a correspondingly color-coded display area through the viewing window 7 of the front cover 3.

The movable front cover 3 preferably has blocking lugs, which in the switched-on state of the multi-pole switching device 1 block an actuation of the receiving units 4-i of the multi-pole switching device 1, as in FIGS FIGS. 10, 11, 12 shown in more detail. In addition, when the spring clamp is closed, a pin of the movable front cover 3 moves on actuation of the operating unit 2 to switch on the multi-pole switching device 1 in a corresponding recess of the mechanical drive of the spring clamp, so that the multi-pole switching device 1, the on state, as in Fig. 1 is shown, can take. Conversely, when the spring clamp is open, the pin of the movable front cover 3 does not move into the corresponding recess of the mechanical drive of the spring-loaded terminal when the operating unit 2 is actuated to switch on the multi-pole switching device 1 and the switching device 1 in the in Fig. 2 displayed off state remains. The state of an open spring clamp is in the FIGS. 13A, 13B, 13C shown in detail. The state of a closed spring clamp is in the Figures 14A, 14B, 14C shown in detail. In the multi-pole switching device 1 according to the invention, this can therefore only be converted from its switched-off state by actuating the operating unit 2 into the switched-on state if all receiving units 4-1, 4-2, 4-3 of the multi-pole switching device 1 are moved to their respective outgoing contact are pivoted and in addition all spring-loaded terminals for connecting a conductor to the outgoing contact are closed.

Fig. 2 shows that in Fig. 1 illustrated embodiment of a multi-pole switching device 1 in an off state from the front. How to get in Fig. 2 can recognize the control unit or the rocker arm 2 is pivoted to the right or bottom (U) and the multi-pole switching device 1 is in the off state. When switching off the switching device 1, the movable front cover 3 moves to the right relative to the housing of the multi-pole switching device 1. As you can see Fig. 2 can recognize 1 access openings are exposed within the housing of the switching device 1 in the off state of the multi-pole switching device. For this purpose, the openings drive 5-1, 5-2, 5-3 within the front cover 3 fit over the access openings within the housing of the switching device 1, as in Fig. 2 shown. At the in Fig. 2 illustrated embodiment, the access openings for mechanical actuators 8-i are provided by spring terminals for clamping connection lines. One recognizes in Fig. 2 from above mechanical drives 8-1, 8-2, 8-3 of spring-loaded terminals. In the switched-off state of the multi-pole switching device 1, the test holes are at least partially hidden in the illustrated embodiment, since a check of the applied voltage at the outgoing contacts is not required. The visible in the viewing window 7 of the front cover 3 display area 17 shows, as in Fig. 2 shown to the user that the multipolar switching device 1 is in the off state.

If the operating unit 2, for example, a rocker arm, on which the shift linkage 9 is coupled to the switch contacts, actuated in the OFF position, the front cover 3, which is also attached to the rocker arm 2, moved down or back. This also causes the release of the required space for tilting and pulling out of the receiving units 4-1, 4-2, 4-3, for example, from drawers for electrical fuses. This ensures that an actuation of the receiving units 4-i, for example fuse holders or fuse drawers, and replacement of the component is possible only in a voltage-free and safe state. Likewise, only in the switched-off state of the multi-pole switching device 1, the mechanical drives of the spring-type terminals for the outgoing lines for the user are accessible. The openings 5-1, 5-2, 5-3 in the front cover 3 are in the OFF position directly above the openings in the housing of the multi-pole switching device 1. This allows mechanical drives operated by spring clamps through the superimposed openings by the fitter become. When switched on the front cover 3, as in Fig. 1 is shown, the front cover 3 is shifted so far that the openings 5 in the front cover 3 and the access openings within the housing of the switching device 1 no longer overlie each other and thus prevent accessibility to the mechanical drive of the spring terminals. In the in Fig. 2 illustrated switched-off state of the multi-pole switching device 1, the receiving units 4-1, 4-2, 4-3 of the switching device 1 are unlocked and can be pulled out, for example via a guide groove from the housing of the multi-pole switching device 1 to insert a respective component in the extracted receiving unit , In the in Fig. 2 shown off state is the multipolar switching device 1 for actuating the operating lever 2 in the on state according to Fig. 1 only convertible if all receiving units 4-1, 4-2, 4-3 of the multipolar switching device 1 are retracted again and moved to their respective outgoing contact or pivoted and beyond all spring terminals are closed to connect a conductor to the outgoing contact. The receiving units 4-1, 4-2, 4-3 for receiving an electrical component, such as a fuse, are formed in a possible embodiment by drawers, in each of which a component in the off state of the multi-pole switching device 1 can be used. Here is the recording unit 4-i, in particular drawer, preferably pivotable about an axis and for inserting the component from the housing of the multi-pole switching device 1 in the off state of the multi-pole switching device 1 can be pulled out. The drawer can not be lost or the drawer is captive. After insertion of the component, the drawer can be inserted back into the housing in the off state of the multi-pole switching device 1 and then pivoted about the axis such that the drawer rests against the respective outgoing contact and thereby an electrical circuit is closed. In the switched-off state of the multipolar switching device 1, that is, when the front cover 3 has moved down, there is enough space or space for pivoting and pulling out the drawers. In the switched-off state of the multi-pole switching device 1, the drawers can also be pushed back into the housing and then pivoted against the respective outgoing contact. Once all the recording units 4-1, 4-2, 4-3 have been pushed into the housing of the multi-pole switching device 1 and have been pivoted against the respective outgoing contact, the multi-pole switching device 1 of the in Fig. 2 illustrated off state in the in Fig. 1 shown switched state manually spent or switched, if in addition all spring terminals are closed for connecting a conductor to the associated outgoing contact. As a result, errors in the installation of the devices are recognized and prevented to the multipole switching device. For example, if a fitter mistakenly forgets to close a spring-loaded terminal, the multi-pole switching device 1 can not be brought into the switched-on state. In this case, the installer has the ability to then close the spring clamp, so then switching on the multi-pole switching device is possible. This embodiment has the advantage that a faulty mounting of devices to the multi-pole switching device 1 can be shown and eliminated. In one possible Embodiment of the multi-pole switching device 1 according to the invention, the housing has two housing shells.

Fig. 3 shows a view in the multi-pole switching device 1 without the upper housing part in an on state of the multi-pole switching device 1. As in Fig. 3 can recognize, the rocker arm 2 is pivoted counterclockwise to the left, with the front cover 3 also moves to the left and above, and thus locks the receiving units 4-i. In an alternative embodiment, the front cover 3 moves in opposite directions to the rocker arm 2. At the same time, the existing within the housing of the multi-pole switching device 1 switching linkage 9, as shown in FIG Fig. 5 is shown, via a toggle lever 10 via a rod or an elongated bracket 11 which is connected to the rocker arm 2, in opposite directions to the front cover 3 to the right or down (U) moves, with switching contacts of the multi-pole switching device 1 in the end position in the switched-state of the multi-pole switching device 1 are closed. One recognizes in Fig. 5 a bearing 10 a for the toggle 10. When the rocker arm 2 in the counterclockwise adjustment of the toggle lever 10 presses in a U-shaped portion of the shift linkage 9 this downward or right. The shift linkage 9 thus moves in opposite directions to the front cover 3. As in Fig. 5 can recognize, are located on the shift linkage 9 switching contacts 12-1, 12-2, 12-3 to close in the on state of the multi-pole switching device 1 an associated circuit, provided that the associated component is inserted into a corresponding receiving unit 4-i and against the associated outgoing contact has been pivoted. In the in Fig. 5 illustrated embodiment, it is the switching contacts 12-1, 12-2, 12-3 to jumpers. In the switched-on state of the multi-pole switching device 1, these switching bridges connect a foot contact of the respective pivotable drawer to a busbar contact 13-1, 13-2, 13-3 of the multipolar switching device 1. To achieve the necessary Contact force is provided for each switching contact or each switching bridge 12-1, 12-2, 12-3 an associated compression spring 14-1, 14-2, 14-3, as in Fig. 5 shown. Each switching bridge 12-i has two switching contacts, which are provided at the two distal ends. In the switched-on state, these contacts on the one hand make contact with a foot contact of the pivotable drawer or receiving unit 4-i and on the other hand make contact with a busbar contact 13-i, which contacts the associated busbar. The return springs 15-1, 15-2 ensure a stable, self-reinforcing position of the shift linkage in the switched-on state of the multipolar switchgear 1. At the in Fig. 5 illustrated embodiment, the shift linkage 9 also contours 16-1, 16-2, 16-3, which are provided for locking the drawers in the case of welded contacts. Further, the display surface 17 is attached or formed on the shift linkage 9, which visually indicates the actual switching state of the multi-pole switching device 1 regardless of the position of the operating unit 2 and the front cover by the present in the front cover 3 viewing window.

At each rail contact 13-i of the multi-pole switching device is preferably a compression spring 18-1, 18-2, 18-3, which is used for clearance compensation and to provide a contact force and ensures a fixed mounting of the multi-pole switching device 1 on the busbars.

The switching device 1 has for each rail an associated rail contact 13-i for electrical contacting of the respective rail. At the in Fig. 3 illustrated embodiment is located at each rail contact 13-i of the switching device 1 integrally formed on the housing of the switching device 1 the respective rail contact 13-i opposite housing contour 19-i, which is mechanically removable for mounting the switching device 1 on a thick rail. The removal of the housing contour 19-1, 19-2, 19-3 can be done with the aid of a tool respectively. In this case, the molded housing contour 19-i is broken out of the housing of the switching device 1, for example by means of a screwdriver. For a thin rail with a thickness of, for example, 5 mm, the housing contour 19-1 remains. For a thicker bar with a thickness of, for example, 10 mm, the housing contour 19-i is removed by the fitter with the aid of a screwdriver. The housing contour 19-i forms a combination foot that can be broken below the support surface of a thick busbar, for example, 10 mm thickness. This ensures a clean support on the busbar. A special shape of the housing contour 19-i ensures that, when the housing contour breaks out, the busbars do not come to lie on the breakout but on separate surfaces. The molded housing contour 19-i is provided on a respective rail contact 13-i opposite Aufsetznase 20-i of the housing for mounting the switching device on the rail. At the in Fig. 3 illustrated embodiment, the molded housing contour is hump-shaped and has two converging webs, which are integrally formed on the rail contact 13-1 opposite Aufsetznase 20-i of the housing. In one possible embodiment of the switching device 1, the housing of the switching device 1 is made of plastic. The molded housing contour 19-i is then also made of plastic.

By operating the rocker arm 2 down or right, the multi-pole switching device 1 is spent in the off state, as in Fig. 4 shown. When switching off the switching device 1, the rocker arm 2 is rotated clockwise down or right, so that the front cover 3 is also pulled to the right. At the in Fig. 4 illustrated embodiment, the front cover 3 engages at the lower distal end in a recess 21 of a wheel 22 which is connected to the rocker arm 2. The distal lower end 23 of the front cover 3 is thereby pulled down, so that the receiving units 4-i in the fully off State of the multipolar switching device 1 are unlocked. By moving the rocker arm 2 clockwise at the same time the bracket 11, in particular a wire hanger, which is connected to the toggle lever 10, moves upward. The bracket 11 is guided at its upper end in a further recess or a slot 25 of the Kipphebelrades 22 with degrees of freedom and is moved by the pivoting of the rocker arm 2 in the clockwise direction upwards. In the recess 25 is a slot, which offers the wire bracket 11 during movement one degree of freedom. The upwardly moving bracket 11 simultaneously attracts the toggle lever 10, so that the shift linkage 9 moves by spring force to the left or above, ie in opposite directions to the front cover 3. The toggle lever 10 is based on a U-shaped portion of the shift linkage 9, as in the Figures 3 . 4 shown. How to get out Fig. 3 . 4 can recognize below the wheel 12 of the shift lever 2 is a specially shaped flat spring or leaf spring 26, which preferably has a bulge 26 a, as in Fig. 16 is shown. The toggle lever 10 provides a switching hysteresis when switching. The resistance force occurring is adjustable via the leaf spring 26. In addition, the leaf spring 26 provides for a reduction of the mechanical play of the rocker arm 2, resulting in a more pleasant operating experience for the user. The kinematics or switching speed can be adjusted by the shape of the leaf spring 26. With the help of the specially shaped leaf spring 26, it is possible to define a specific switching point, wherein after exceeding the switching point of the shift lever 2 passes without further force into the other switching state. For example, the operator pulls the lever 2 down or as in the Figures 3 . 4 shown in the clockwise direction, the operator must spend until reaching the switching point force and after exceeding the switching point, the shift lever 2 moves without further force of the person in the final switching position, ie in the off state. In the same way, for switching on the multi-pole switching device. 1 the operator to move the lever 2 counterclockwise upwards, where they must spend until reaching the switching point force. After exceeding the switching point then the shift lever 2 moves independently in the final switching position, as in Fig. 3 is shown. Therefore, after exceeding the switching point, in particular in a switch-off, an operator-independent switching off of the switching device 1 by means of the elongated hole 25, the leaf spring 26, the return springs 15 and the toggle lever 10th

Fig. 6 shows a side view of the housing of the multi-pole switching device 1 in its off state. This in Fig. 6 illustrated three-pole switching device 1 has on its underside three Aufsetznasen 20-1, 20-2, 20-3, which are provided for mounting the switching device 1 on three busbars. At the in Fig. 6 illustrated embodiment, an associated housing contour 19-i is formed on each Aufsetznase 20-i, which are mechanically removable for mounting the switching device 1 on thick rails. In addition, for the lowest busbar at the in Fig. 6 illustrated embodiment, a locking element 27 is provided. Furthermore, in the in Fig. 6 illustrated embodiment for the middle busbar a spacer rib 28 which protects the cover panels when snapping the device. How to get in Fig. 6 can recognize 1, wave-shaped cooling slots 29-1, 29-2, 29-3 can be located in the housing of the multi-pole switching device.

Fig. 7 shows a side view of the housing of the multi-pole switching device 1 in its off state from the right. This in Fig. 6 . 7 shown three-pole switching device 1 can be placed on three busbars with three phases L1, L2, L3.

Fig. 8 shows a view of the housing of a multi-pole switching device 1 from above. Fig. 9 shows a view on the Housing of the multi-pole switching device 1 from below. How to get in Fig. 9 can recognize, an opening 30 is provided in the housing of the multi-pole switching device 1, which can serve to mount a U-lock. This is in the FIGS. 18A, 18B shown in detail. How to get in Fig. 18A can recognize, in one possible embodiment, the rocker arm 2 may be connected via a web 31 with the wheel 22 of the rocker arm 2, wherein in the web 31 an opening 32 is provided through which a U-shaped bracket 33 of a padlock 34 can be performed , The bracket 33 is thereby passed through both the opening 30 of the housing of the multi-pole switching device 1 and through the opening 32 of the connecting web to prevent in the illustrated embodiment, a pivoting of the rocker arm 2 from the off position to the on position. Alternatively to the in Fig. 18A Shackle lock shown can be done by the two openings and a seal in the on state. The opening 30 within the housing represents a sealing opening for sealing the multipolar switching device 1.

In one embodiment, it is also possible that the multi-pole switching device 1 can be blocked in the on state with a sealer or a padlock. Which of the two alternatives is chosen depends on the respective application. Fig. 18A shows a sectional view along the section line KK in Fig. 18B with the shift lever 2 in the off state. The Plombieröffnung 30 within the housing of the multi-pole switching device 1 provides additional security against incorrect operation, especially by inexperienced users or unauthorized third parties.

Fig. 10 shows a detailed view of a multi-pole switching device 1 from above in a region of the front cover 3, in which a receiving unit 4-i is to receive a component. At the in Fig. 10 illustrated embodiment, the receiving unit 4-i is a drawer, which in is a locked state. Fig. 11 shows a sectional view along the section line HH in Fig. 10 , When the multi-pole switching device 1 is switched on, the front cover 3 is moved upwards and locks the receiving unit 4-i by means of a corresponding blocking lug 35-i, as in FIG Fig. 11 shown. The blocking lug 35-i engages in the drawer 4-i when it is switched on, so that it can not be actuated by a user.

Fig. 12 shows a sectional view along the section line HH in the off state of the multi-pole switching device 1, in which the front cover 3 has been moved laterally to the right or down, so that the blocking lug 35-i no longer blocks the receiving unit 4-i or drawer 4-i , In the off state with unlocked drawer 4-i, the multi-pole switching device 1 can not be turned on. In this case, the receiving unit or drawer locks the front cover 3. In the off state of the multi-pole switching device 1, as in Fig. 12 is illustrated, the receiving unit or the drawer 4-i is unlocked and can via a guide groove 36-i, as shown in Fig. 11 can be seen, are pulled out of the housing of the multi-pole switching device 1 to insert a component in the withdrawn recording unit or drawer 4-i. As in Fig. 11 to recognize, the guide groove 36-i on two opposite guide webs, which serve to extend and insert the drawer. In Fig. 11 is the receiving unit or drawer 4-i shown without inserted component and you can see in the background, the ventilation slots 29-i of the housing. If a component, for example a fuse, is inserted in the drawer 4-i, this connects an in Fig. 11 illustrated outgoing contact 37-i with a foot contact. The foot contact is opposite to one of the switching contacts of an associated switching bridge 12-i. Below the Fußkontaktes may additionally be a compression spring to ensure good contact. When switched on and locked drawer 4-i connects attached to the shift linkage 9 Switching contact or the switching bridge 12-i the foot contact of the receiving unit 4-i with the busbar contact 13-i. The circuit is closed, provided that the component used is after pivoting the drawer 4-i between the outgoing contact 37-i and the foot contact of the drawer. The outgoing contact 37-i is routed via an internal cable to a connection contact to connect an electrical device. In a preferred embodiment, this connection contact may have a spring-loaded terminal 42-i.

Fig. 13A shows a sectional view taken along the section line EE of Fig. 13B from the front shown drive the spring clamp. In the FIGS. 13A, 13B, 13C is the respective spring clamp 42-i open. In the front cover 3 is an opening 5-i, which is in the off state of the multi-pole switching device 1 directly above an access opening within the housing of the multi-pole switching device, as in Fig. 13B shown. When switched on the multi-pole switching device 1, these access openings are hidden and can not be operated. When switched off the multi-pole switching device 1, the access openings are not covered and accessible as in the FIGS. 13B and 14B shown. The spring-type terminals 42-i are rotatable in the switched-off state of the multi-pole switching device 1 with a tool. The design of the drives 39-i for the spring terminals 42-i allows in one possible embodiment, a rotation of about 95 °. With additional nubs can be ensured that the opened spring clamp 42 -i remains in a stable position. Unintentional opening is then excluded. The incorporation of the drive element 39-i into a press fit may prevent vibration and rattling during operation.

Fig. 13A shows the drive of the tension spring clamp in the reverse direction. The front cover 3 can not retract into the recess of the drive 39-i of the spring-loaded terminal 42-i, so that switching on the multi-pole switching device 1 is not possible. Fig. 13C shows a sectional view taken along the section line FF of Fig. 13A with the drive of spring clip 38-i open.

Figs. 14A, 14B, 14C In contrast, show a state in which the spring clip 42-i is closed. The multi-pole switching device 1 is in the off state, as he, for example, in Fig. 2 is shown, so that the openings 5-i within the front cover 3 are congruent with access openings within the housing of the multi-pole switching device 1. The spring-type terminal 42-i for the respective outgoing contact 37-i has a mechanical drive 39-i, which has, for example, a slot 40-i for attaching a screwdriver, as in FIG Fig. 13A shown. Inserted in the mechanical drive element 39-i is a metal knife 41-i, which is rotated when the screwdriver is rotated. The metal blade 41-i of the drive element abuts against a spring-type clamp 42-i, as in FIG Fig. 14A shown. Fig. 14A shows the tension spring clamp in the closed state. How to get in Fig. 14A can recognize, in the closed state of the spring clamp 42-i a pin 43-i of the front cover 3 in the mechanical drive for switching on the multi-pole switching device 1 in the mechanical drive 39-i retract the spring terminal 42-i. When the spring clamp terminal 42-i is closed, the pin of the movable front cover 3 moves into a corresponding recess of the mechanical drive 39-i of the spring-loaded terminal 42-i when the operating unit 2 is switched on so that the multipolar switching device 1 assumes the switched-on state can. With open spring terminal 42-i, as in Fig. 13A illustrated, the pin 43-i of the movable front cover 3 when operating the control unit 2 to turn on the multi-pole switching device 1 not in the corresponding recess of the mechanical drive 39-i retract the spring terminal 42-i retract so that switching on the multi-pole switching device 1 blocks and the switching device 1 remains in its off state. If a fitter accidentally forgets to close a spring-loaded terminal 42-i of a connected device, turning on the multi-pole switching device 1 is blocked. Only when the fitter has closed the corresponding spring-loaded terminal 42-i and thus the assembly of the device is properly completed, the multi-pole switching device 1 can be turned on.

Fig. 15 shows a sectional view through a multi-pole switching device 1 for a more detailed illustration of an embodiment of a usable in the multi-pole switching device 1 for each receiving unit outgoing contact 37-i. The outgoing contact 37-i is at the in Fig. 15 illustrated implementation example via two current bar 44-i, 45-i connected to the tension spring clamp 42-i, in which an outgoing line or contact line can be plugged into an electrical device. Fig. 15 shows similar to Fig. 14A a closed spring clamp 42-i. The lower resilient part of the outgoing contact 37-i, ie the lower web 45-i, ensures that the power supply is not interrupted when the receiving unit or drawer 4-i is pressed in the switched-on state of the multi-pole switching device 1.

Fig. 16 shows a view of an embodiment of the multi-pole switching device 1 without housing upper part and without locking element, the rocker arm 2 is moved in the on state to the off state and due to the special shape of the leaf spring 26 has just overcome a maximum force. The leaf spring 26 has a hump-shaped bulge or cam 22a of the wheel 22. How to get in Fig. 16 can recognize, is the toggle lever 10 and the shift linkage 9 at this time still in the "ON" position and the wire hanger 11 runs freely in the recess of the wheel 22 of the rocker arm second

Fig. 17 shows a view of an embodiment of the multi-pole switching device 1 without upper housing part and without Locking element, when the shift lever 2 moves further down in the clockwise direction. The toggle lever 2 is already in the off position, the shift linkage 9 moves due to the force of the return springs 15-1, 15-2 to the left or above, the wire clip 11 is pushed up and the freewheel and the slot 25th within the wheel 22 of the rocker arm 2 for movement. At the in Fig. 17 illustrated embodiment, two return springs 15-1, 15-2 are provided. In an alternative embodiment, only one return spring 15 may be provided. The return springs 15-i ensure that the switching slide or the switching linkage 9 when switching off the multi-pole switching device 1 is moved in opposite directions to the front cover 3 upwards to interrupt the over the switching bridges 12-i extending current path. The shape of the two toggle lever halves of the toggle lever 10 together with the return springs 15-i ensures that the mechanical system in the switched-on state of the multi-pole switching device 1 self-energizing remains in this position. The bearing of the toggle lever halves and their outer diameter ensures optimized power transmission. The specially shaped leaf spring 26 with the bulge 26a leads to a defined force curve when switching on and off. For each shift, a low shift force is first necessary, which increases until a maximum shift force is reached, the shift force then decreases again after exceeding the maximum shift force. In addition, the leaf spring 26 holds the rocker arm 2 in the end positions, ie in the on and off state of the multi-pole switching device 1, in a stable position. A freewheel in the form of an elongated hole 25 ensures that when turning off the switching device 1, the bridge contacts are not opened until the rocker arm 2 has overcome the predetermined by the leaf spring 26 point of the largest switching force. After overcoming the dead center of the toggle joints can no longer be stopped by the operator due to the slot 25 of the switch-off. The return springs 15-i on the shift linkage. 9 ensure that the shift linkage 9 automatically reaches the switching position "OFF" (operator-independent switching off). When switching on, a flat-form spring can ensure that the operator has to overcome a high force and then immediately after that the switching force is lowered (quasi operator-independent switching on). A flag indicator 17 formed on and integrated with the shift linkage 9 provides the operator with an independent shift position indication.

The multi-pole switching device 1 according to the invention is suitable for inserting components, in particular electrical fuses. Alternatively, other electrical components in the various receiving units 4-i of the multi-pole switching device 1 can be used to be connected to the respective electrical circuit. Examples of such components are coils or capacitors. The multi-pole switching device 1 according to the invention offers a high degree of security for the user or the installer during assembly and when inserting components in the multi-pole switching device 1. In the switched-on state of the multi-pole switching device 1, the receiving units 4-i due to in the front cover 3 integrated locking lugs locked, so that the user has no way ever to get to the live parts. Furthermore, the pins provided in the movable front cover 3 ensure that the multi-pole switching device 1 can only assume the switched-on state when the spring-type terminals 42-i are properly closed. Only when all receiving units 4-i of the multi-pole switching device 1 have been pivoted to their respective outgoing contact and also all spring terminals 42-i are closed to connect a conductor to the respective outgoing contact, the multi-pole switching device 1 from its off state by pressing the operating lever. 2 can be converted into the switched-on state. Therefore, the installer sets a Kontaktierungsleitung in a spring-type terminal 42-i of the multi-pole switching device 1, forgets However, to close the spring clamp 42-i by operating the mechanical drive 39-i, the multi-pole switching device 1 can not be brought into the on state. This prevents that an inserted only in the spring clamp 42-i Kontaktierungsleiter after forgotten closing the spring clamp 42-i after installation unintentionally later again from the spring clamp 42-i can solve. The multi-pole switching device 1 according to the invention therefore also prevents inadequate or faulty contacting of devices to the multi-pole switching device 1. If at least one contacting conductor is mounted incorrectly, switching on the entire multi-pole switching device 1 is no longer possible. Therefore, the multi-pole switching device 1 can be brought into the switched-on state only when all spring-cage terminals 42-i are properly closed.

In the in the FIGS. 1 to 17 illustrated embodiments, the multi-pole switching device 1 as a control unit 2 via a rocker arm. Alternatively, as a control unit 2, a rotary drive can be provided.

When the component is inserted or inserted, a required pressing force can be generated by means of a pressure spring mounted under the foot contact of the receiving unit 4-i. Only with properly limited fuse holders or drawer 4-i, the switching mechanism can be moved by means of the rocker arm 2 in the on position.

In the in the FIGS. 1 to 17 illustrated embodiments are used for contacting the connected devices spring terminals 42-i. In an alternative embodiment, the connection of the devices can also be done via terminal screws. In one possible embodiment, the front cover 3 is made of a plastic. In a possible embodiment, the front cover 3 is made of a transparent plastic.

Claims (22)

Multi-pole switching device (1) for a busbar system with a mounted on the housing of the switching device movable front cover (3) which locks in an on state of the multi-pole switching device (1) at least one receiving unit (4) for receiving a component. Multipole switching device according to claim 1,
wherein the movable front cover (3) of the multi-pole switching device (1) is operable by an operating unit (2) which moves a switching linkage (9) provided within the housing of the multi-pole switching device (1) in opposite directions or in the same direction as the front cover (3), that switching contacts (12) of the multi-pole switching device (1) are closed in the switched-on state of the multi-pole switching device (1). Multipole switching device according to claim 1 or 2,
wherein the movable front cover (3) of the multi-pole switching device (1) in the switched-on state of the multi-pole switching device (1) obscured access openings for mechanical drives (39) of spring terminals (42) for clamping connecting leads and / or terminal screws for tightening Connecting lines are provided. Multipole switching device according to claim 3,
when the spring cage terminal (42) is closed, when actuating the control unit (2) to switch on the multi-pole switching device (1), a pin of the movable front cover (3) into a corresponding recess of the mechanical drive (39) of the spring clamp (42) or a pin of the mechanical Drive (39) of the spring clamp (42) enters a corresponding recess of the movable front cover (3), so that the multi-pole switching device (1) assumes the on state. Multipole switching device according to claim 4,
when the spring clamp (42) is open, the pin (43) of the movable front cover (3) does not engage in the corresponding recess of the mechanical drive (39) of the spring-loaded terminal (42) when the operating unit (2) for switching on the multipolar switching device (1) is actuated so that switching on the multi-pole switching device (1) is blocked and the switching device (1) remains in the off state. Multipole switching device according to one of the preceding claims 1 to 5,
wherein the movable front cover (3) has blocking lugs (35) which, in the switched-on state of the multi-pole switching device (1), block actuation of the receiving units (4) of the multi-pole switching device (1). Multipole switching device according to one of the preceding claims 1 to 6,
wherein the receiving units (4) of the multi-pole switching device (1) in the off state of the multi-pole switching device (1) are each movable against an associated outgoing contact (37) to close an associated circuit, after an associated switching contact (12) through which in opposite or parallel to the front cover (3) movable shift linkage (9) is closed. Multipole switching device according to claim 7,
wherein the movable front cover (3) of the multi-pole switching device (1) has test holes (6) which in the switched-on state of the multi-pole switching device (1) each contact of the outgoing contact (37) with a test pin for checking the applied electrical voltage allowed. Multipole switching device according to one of the preceding claims 2 to 8,
wherein the switching contacts (12) of the multi-pole switching device (1) are each formed by a switching link connected to the switching linkage (9), which in the switched-on state of the multipolar switching device (1) has a foot contact of the respective pivotable receiving unit (4) with a busbar contact ( 13) of the multi-pole switching device (1) connects. Multipole switching device according to one of the preceding claims 1 to 9,
wherein in the receiving unit (4) of the multi-pole switching device (1) in its switched-off state in each case a component, in particular an electrical fuse, can be used. Multipole switching device according to one of the preceding claims 1 to 10,
wherein on the shift linkage (9) a display surface (17) is mounted, by a in the front cover (3) existing viewing window (7) a user the actual switching state of the multi-pole switching device (1) regardless of the position of the operating unit (2) and the front cover (3) visually displays. Multipole switching device according to one of the preceding claims 1 to 11,
wherein in the housing of the multi-pole switching device (1) has an opening (30) for terminating the multi-pole switching device (1) is provided. Multipole switching device according to one of the preceding claims 1 to 12,
wherein in the switched-off state of the multi-pole switching device (1) the receiving unit (4) of the multi-pole switching device (1) is unlocked and via a guide groove (36) captive from the housing of the multi-pole switching device (1) can be pulled out to a component in the pulled out Insert receiving unit (4). Multipole switching device according to one of the preceding claims 9 to 13,
wherein on the foot contact of the receiving unit (4) a compression spring is provided which a predetermined contact force between a component used in the receiving unit (4) and the foot contact of the receiving unit (4) and the inserted component and the outgoing contact (37) of the receiving unit (4 ). Multipole switching device according to one of the preceding claims 1 to 14,
wherein the multi-pole switching device (1) from an off state by operating the control unit (2) in the on state only when all recording units (4) of the multi-pole switching device (1) are moved to their respective outgoing contact (37) and also all spring-type terminals (42) for connecting a conductor to the outgoing contact are closed. Multi-pole switching device (1) according to one of the preceding claims 1 to 15,
wherein the receiving unit (4) for receiving a component by a drawer is formed, in which a component in the off state of the multi-pole switching device (1) can be inserted. Multipole switching device according to one of the preceding claims 1 to 16,
wherein the receiving unit (4), in particular drawer, pivotable about an axis and from the housing of the multi-pole switching device (1) in its off state for inserting the component can be pulled out. Multipole switching device according to one of the preceding claims 1 to 17,
wherein the operating unit (2) is a rocker arm or a rotary drive. Multipole switching device according to one of the preceding claims 1 to 18,
wherein the switching device (1) for each rail has an associated rail contact (13) for electrically contacting the respective rail. Multipole switching device according to claim 19,
wherein at each rail contact (13) of the switching device (1) integrally formed on the housing of the switching device and the respective rail contact (13) opposite housing contour (19), which is mechanically removable for mounting the switching device (1) on a thick rail. Multipole switching device according to one of the preceding claims 1 to 20,
wherein the rocker arm (2) is mounted on a wheel (22) having a cam (22a) which upon manual actuation of the rocker arm (2) via a bulge (26a) of an adjacent flat-form spring (26) for overcoming a maximum force is moved. Multipole switching device according to claim 21,
wherein in the wheel (22) has a slot (25) is provided in which a first end of a bracket (11) is guided, wherein the bracket (11) at its second end with a Knee lever (10) is connected, which actuates the shift linkage (9) by means of return spring (15).

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