EP2819246B1 - Connection device, in particular switching device, with a spring-loaded terminal and a drive mechanism for operating the spring-loaded terminal - Google Patents

Description

The invention relates to a connection device, in particular a switching device for a busbar system, with at least one spring clamp and an associated drive for actuating the spring clamp.

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 to protect the electrical device is interposed. This component can be replaced by a fitter or installer if necessary.

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

In such switching devices spring terminals are used for connecting an electrical device to an electrical device of the switching device, such as an electrical fuse.

To open the spring terminals an installer traditionally uses a screwdriver, with which he leverages the spring clamp by a tilting movement. However, the connection of an electrical conductor with the spring-type terminal is difficult in this case, since the electrical conductor of the spring-type terminal supplied and the spring-loaded terminal must be kept levered simultaneously with the screwdriver.

In the DE 100 37 550 A1 Furthermore, a cable connection device is disclosed, which has a housing with a bearing recess in which an actuator is rotatably mounted, which has a rotary head in the manner of a screw head for pivotal mounting.

It is therefore an object of the invention to provide a terminal device with improved operation of the spring-type terminal for connecting an electrical conductor.

This object is achieved by a connection device with the features specified in claim 1, and a method having the features specified in claim 13.

The invention accordingly provides a connecting device for connecting at least one electrical conductor to at least one spring-loaded terminal provided in a housing of the connecting device, which has a mechanical drive, wherein the mechanical drive is arranged or installed in the housing and has a knife which has a broad side and a narrow side has for actuating the spring-loaded terminal, wherein the knife moves with its broad side the spring-loaded terminal in an open position in which the electrical conductor is insertable into an insertion opening of the spring-loaded terminal.

By means of the drive installed in the housing, the spring-loaded terminal can be operated more easily, since no screwdriver has to be attached to the spring-loaded terminal and this must be levered in order to simultaneously connect an electrical conductor to the spring-loaded terminal. Furthermore, the drive through the blade for actuating the spring-loaded terminal has a simple, easy to manufacture and cost-effective construction.

According to the invention, at least one projection is formed on the mechanical drive for actuating the mechanical drive, wherein the projection protrudes through a housing opening of the housing for actuating the mechanical drive. By means of the projection, the mechanical drive can be very easily operated from the outside to move the spring clamp in the open or closed position.

According to the invention, the projection is formed on the circumference of the mechanical drive. Thereby, the mechanical drive can be rotated by operating the projection in its circumferential direction and in this case actuate the spring-loaded terminal coupled to it by means of its knife.

In a possible embodiment of the connecting device according to the invention the knife allows with its narrow side moving the spring clamp in a closed position in which the electrical conductor is clamped in the spring-type terminal. By means of the wide and narrow side of the knife, the spring clamp can be very easily brought into their open and closed position.

In a further possible embodiment of the connection device according to the invention, the spring-loaded terminal has a support leg and a spring leg, which has an insertion opening for insertion of the electrical conductor and is pressed by the broad side of the blade of the mechanical drive for clamping the inserted electrical conductor towards the support leg.

The spring leg of the spring clamp can spring back in a possible embodiment of the invention in a closed position in which the electrical conductor is clamped in the spring clamp when the knife is brought with its narrow side in contact with the spring leg or the knife with its broad side of the spring leg is removed. This spring-back of the spring clamp allows an automatic snapping the spring clamp in its closed position, without the spring clamp must be moved by an installer or fitter to its closed position.

In a further possible embodiment of the connecting device according to the invention, the mechanical drive at one end has a tool holder, for example a slot, for receiving a tool and actuating the spring-loaded terminal by means of the mechanical drive. By means of the recorded in the tool holder tool, the mechanical Drive can be easily operated and through him the spring clamp. Such a tool holder is also easy and inexpensive to manufacture

In another possible embodiment of the connecting device according to the invention, the mechanical drive has at one end an actuating element for actuating the mechanical drive. The actuating element is, for example, a handle, lever or switch for rotating the mechanical drive in the circumferential direction. As a result, no tool, such as a screwdriver, used to turn the mechanical drive.

In a further possible embodiment of the connecting device according to the invention, the projection is provided at a first end of a rocker switch, wherein a recess for inserting a tool, in particular a screwdriver, is provided at an opposite second end of the rocker. By means of the actuating rocker, a tilting or rocking movement can be provided for actuating the mechanical drive. The actuating rocker is provided in the circumferential direction of the mechanical drive for forward and backward rotation of the mechanical drive in the circumferential direction.

In yet another possible embodiment of the connecting device according to the invention, the mechanical drive has at least one nub, with which the mechanical drive can be fixed in a predetermined position in the housing. For example, the mechanical drive can be held with its nub on the housing, for example by frictional contact or clamping contact. In the predetermined position, in which the mechanical drive is held with its nub in the housing, the spring-loaded terminal, for example, in its open position.

In yet another possible embodiment of the connecting device according to the invention, the mechanical drive has a drive element with a first and second end, wherein the blade is provided at the first end. Since the spring clamp is operated by means of the knife, the shape of the drive element can be adapted, for example, such that at its second end the actuating element for actuating the mechanical drive and / or the tool holder, such as a slot, can be made very simple no flat and wide side as with the knife must be provided.

In a further possible embodiment of the connecting device according to the invention, the knife of the mechanical drive is pressed into a slot of the drive element or formed in the drive element, for example, at least partially encapsulated therein. In this way, the knife can be easily attached to the drive element.

In another possible embodiment of the connecting device according to the invention, the mechanical drive is in the circumferential direction rotatably installed in the housing of the connection device. A rotational movement of the mechanical drive for actuating the spring-loaded terminal is easy to implement in the housing of the connection device and without much space.

In one possible embodiment of the connecting device according to the invention, the housing has a trough-shaped depression in which the housing opening is provided, from which protrudes the projection. The trough-shaped depression allows the projection to protrude sufficiently from the housing on the one hand for manual actuation and at the same time not have to protrude beyond the width of the housing. Instead, the projection with the housing complete, so that the projection, for example, can not be operated unintentionally from the outside.

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 eines Schaltgerätes in dessen eingeschaltetem Zustand, wobei das Schaltgerät Federzugklemmen und deren Antriebe gemäß einer ersten Ausführungsform aufweist;

Fig. 2

eine Vorderansicht für das in Fig. 1 dargestellte Schaltgeräte in dessen ausgeschaltetem Zustand;

Fig. 3

ein Ausführungsbeispiel des Schaltgerät, in dessen eingeschaltetem Zustand, wobei das Schaltgerät Federzugklemmen und deren Antriebe gemäß der ersten Ausführungsform aufweist;

Fig. 4

eine Ansicht ohne Gehäusedeckel für das in Fig. 3 dargestellte Schaltgeräte in dessen ausgeschaltetem Zustand;

Fig. 5

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

Fig. 6

eine Seitenansicht auf ein Ausführungsbeispiel des Schaltgerätes von links;

Fig. 7

eine Seitenansicht auf ein Ausführungsbeispiel des Schaltgerätes von rechts;

Fig. 8

eine Ansicht auf ein Ausführungsbeispiel des Schaltgerätes von oben;

Fig. 9

eine Ansicht auf ein Ausführungsbeispiel des Schaltgerätes von unten;

Fig. 10

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

Fig. 13A, 13B, 13C

Ansichten zur Darstellung einer geöffneten Federzugklemme gemäß der ersten Ausführungsform zur Erläuterung der Funktionsweise bei einem Ausführungsbeispiel des Schaltgerätes;

Fig. 14A, 14B, 14C

Ansichten einer geschlossenen Federzugklemme ge-mäß der ersten Ausführungsform zur Erläuterung der Funktionsweise bei einem möglichen Ausführungsbeispiel des Schaltgerätes;

Fig. 15

eine Darstellung eines Implementierungsbeispiels eines bei dem Schaltgerät angewendeten Abgangskontaktes;

Fig. 16

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

Fig. 17

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

Fig. 18A, 18B

Detailansichten zur Darstellung einer bei der Frontabdeckung des Schaltgerätes vorgesehenen Plombiereinrichtung;

Fig. 19

eine Detailansicht einer innerhalb eines Schaltgeräts angeordneten Federzugklemme und deren Antriebs gemäß einer zweiten Ausführungsform, wobei die Federzugklemme geöffnet ist;

Fig. 20

eine Perspektivansicht des Antriebs der Federzugklemme gemäß Fig. 19;

Fig. 21

eine weitere Perspektivansicht des Antriebs der Federzugklemme gemäß Fig. 19;

Fig. 22

eine Perspektivansicht des Antriebselements des Antriebs gemäß Fig. 20 und 21;

Fig. 23

eine weitere Detailansicht einer innerhalb eines Schaltgeräts angeordneten Federzugklemme und ihres Antriebs gemäß der zweiten Ausführungsform, wobei die Federzugklemme geschlossen ist;

Fig. 24

die Detailansicht gemäß Fig. 23, wobei die Federzugklemme geöffnet ist;

Fig. 25

die Detailansicht gemäß Fig. 24, wobei ein Kontaktierungsleiter in die geöffnete Federzugklemme eingeführt ist;

Fig. 26

eine Detailansicht des Schaltgeräts und der darin angeordneten erfindungsgemäßen Federzugklemme und ihres Antriebs von außen.

Show it:

Fig. 1

a front view of a switching device in its on state, wherein the switching device spring terminals and their drives according to a first embodiment;

Fig. 2

a front view for the in Fig. 1 illustrated switching devices in its off state;

Fig. 3

an embodiment of the switching device in its on state, wherein the switching device spring terminals and their drives according to the first embodiment has;

Fig. 4

a view without housing cover for the in Fig. 3 illustrated switching devices in its off state;

Fig. 5

a view of a shift linkage used in a possible embodiment of the switching device;

Fig. 6

a side view of an embodiment of the switching device from the left;

Fig. 7

a side view of an embodiment of the switching device from the right;

Fig. 8

a view of an embodiment of the switching device from above;

Fig. 9

a view of an embodiment of the switching device from below;

Fig. 10

a detail view from above of a locked receiving unit within a front cover according to an embodiment of the switching device;

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 switching device;

Figs. 13A, 13B, 13C

Views illustrating an open spring clamp according to the first embodiment for explaining the operation in an embodiment of the switching device;

Figs. 14A, 14B, 14C

Views of a closed spring clamp according to the first embodiment for explaining the operation in a possible embodiment of the switching device;

Fig. 15

a representation of an implementation example of an applied in the switching device outgoing contact;

Fig. 16

an embodiment of a switching device for displaying the operation of an operable operating unit used in the switching device;

Fig. 17

an embodiment of the switching device for illustrating the operation of an operable operating unit used by the switching device;

Figs. 18A, 18B

Detailed views for showing a provided at the front cover of the switching device sealing device;

Fig. 19

a detailed view of an arranged inside a switching device spring cage and its drive according to a second embodiment, wherein the spring clamp is opened;

Fig. 20

a perspective view of the drive of the spring clamp according to Fig. 19 ;

Fig. 21

a further perspective view of the drive of the spring clamp according to Fig. 19 ;

Fig. 22

a perspective view of the drive element of the drive according to FIGS. 20 and 21 ;

Fig. 23

a further detailed view of a spring clamp disposed within a switching device and its drive according to the second embodiment, wherein the spring clamp is closed;

Fig. 24

the detailed view according to Fig. 23 , wherein the spring clamp is opened;

Fig. 25

the detailed view according to Fig. 24 wherein a Kontaktierungsleiter is inserted into the open spring clamp;

Fig. 26

a detailed view of the switching device and arranged therein spring cage terminal and its drive from the outside.

In the following, possible embodiments of a connection device according to the invention with at least one spring clamp and its drive will be described in detail with reference to the accompanying figures. The connection device here is, for example, a switching device for a busbar system.

Fig. 1 shows a front view of an example of a switching device 1, for example, a multi-pole switching device 1, for a busbar system. 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 multipolar switching device 1 mounted on three parallel busbars become. When assembled, the in 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 (O). 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, 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. 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 (O). 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, the movable front cover 3 locks in the on state of the multi-pole switching device 1, the receiving units 4-1, 4-2, 4-3, 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 mounted 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 instead of a three-pole switching device as a single-pole, two-pole, four-pole switching device, etc. may be formed.

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 5-1, 5-2, 5-3 to the housing of the multi-pole switching device 1, for mechanical drives 8-1, 8-2, 8-3 of spring terminals for clamping from connecting cables.

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 covered. In one possible embodiment, these access openings 5-1, 5-2, 5-3 are provided for mechanical drives 8-1, 8-2, 8-3 of spring-type terminals for clamping 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 is at the in Fig. 5 illustrated shift linkage 9, a display surface 17 is mounted, which independently by a present in the front cover 3 viewing window 7 a user, the actual switching state of the multi-pole switching device 1 from the position of the operating unit 2 and the front cover 3 visually displays. 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, moves at a closed spring clamp a pin of the movable front cover 3 upon actuation of the control unit 2 for switching the multi-pole switching device 1 in a corresponding recess of the mechanical drive 8-1, 8-2, 8-3 of the spring clamp, so that the multi-pole switching device. 1 the switched-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 8-1, 8-2, 8-3 of the spring-loaded terminal when the control unit 2 is actuated to switch on the multi-pole switching device 1, so that switching on of the multi-pole Switching device 1 is blocked 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, 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 or are pivoted and also all spring 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 5-1, 5-2, 5-3 are provided for mechanical actuators 8-i of spring terminals for clamping connecting lines. One recognizes in Fig. 2 from above the mechanical drives 8-1, 8-2, 8-3 of spring 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, drawers for electrical fuses. This ensures that only in a tension-free and safe condition actuation the receiving units 4-i, such as fuse holders or fuse drawers, and a replacement of the component is possible. Likewise, the mechanical drives 8-1, 8-2, 8-3 of the spring-type terminals for the outgoing lines are accessible to the user only in the switched-off state of the multi-pole switching device 1. 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 the mechanical drives 8-1, 8-2, 8 -3 are operated by spring clamps through the superimposed openings by the installer. When switched on the front cover 3, as in Fig. 1 is shown, the front cover 3 is displaced 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 so the accessibility to the mechanical drive 8-1, 8-2 bzw.4- 1 8-3 prevent 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. In this case, the receiving unit 4-i, in particular drawer, preferably by one Axis pivoted and pulled out for insertion of the component from the housing of the multi-pole switching device 1 in the off state of the multi-pole switching device 1. 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 recording units have 4-1, 4-2, 4-3 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 shown 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, 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 multipolar 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, for each switching contact or switching bridge 12- 1, 12-2, 12-3 an associated compression spring 14-1, 14-2, 14-3 provided, 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. In this case, the molded housing contour 19-i, for example, by means of a screwdriver from the housing of the switching device 1 broken out. 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 are unlocked in the fully switched-off state of the multi-pole switching device 1. 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 upwards. 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, to turn on the multi-pole switching device 1, the operator can move the shift lever 2 counterclockwise upwards, where they reach until the switching point Must expend 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 of the housing of the multi-pole switching device 1 from below. How to get in Fig. 9 can be seen in the housing of the multipolar switching device 1 an opening 30 is provided, which can serve for hanging 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 is in a locked state. Fig. 11 shows a sectional view along the section line HH in Fig. 10 , in the switched state of the multi-pole switching device 1, the front cover 3 is moved upwards and locks the receiving unit 4-i using a corresponding blocking lug 35-i, as in 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. In the switched-on state and the locked drawer 4-i, the switching contact or the switching bridge 12-i attached to the switching linkage 9 connects the foot contact of the receiving unit 4-i to the current 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. This connection contact has a spring-type terminal 42-i.

Fig. 13A shows a sectional view along the section line EE of in Fig. 13B from the front illustrated 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 8-1 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 it is not possible to switch on the multi-pole switching device 1. Fig. 13C shows a sectional view 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 8-i with a drive element 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 of the drive 8-i is a metal knife 41-i, which is rotated upon rotation of the screwdriver. The metal knife 41-i of the driver 39-i abuts against a spring 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 8-i to turn on the multi-pole switching device 1 in the drive element 39-i of the mechanical drive 8-i of the spring clamp 42-i retract. 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 8-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 8-i of the spring clamp 42-i retract, so blocking switching on the multi-pole switching device 1 is and the switching device 1 in its off state remains. 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 switching device 1, for example multi-pole switching device 1, 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 switching device 1 provides a high level of security for the user or the fitter during assembly and when inserting components in the switching device 1. In the switched-on state of the switching device 1, the receiving units 4-i are locked due to the integrated in the front cover 3 blocking lugs so that the user has no opportunity to even get to the live parts. Furthermore, the pins provided in the movable front cover 3 ensure that the 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 uses a Kontaktierungsleitung in a spring-type terminal 42-i of the multi-pole switching device 1, but forgets the spring clamp 42-i by pressing the mechanical To close drive 8-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 prevents in this way therefore also inadequate or faulty contacts of devices to the multi-pole switching device 1. If at least one Kontaktierungsleiter is incorrectly mounted, 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 switching device 1 as a control unit 2 via a rocker arm. Alternatively it can be provided as a control unit 2, a rotary drive.

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 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.

In Fig. 19 Furthermore, a detail view of a connection device 1 with a spring-loaded terminal arranged therein 42-i and its mechanical drive 8-i according to a second embodiment.

The connection device 1 is in this case designed, for example, as a switching device which has essentially the same structure as the switching device 1, which has previously been described with reference to exemplary embodiments with reference to FIGS Fig. 1-17 . 18A and 18B has been described.

The mechanical drive 8-i of the spring-type terminal 42-i according to the second embodiment differs from that previously described, for example, in FIGS Fig. 1-4 . 13A-13C . 14A-14C and 15-17 shown drive 8-i of spring cage 42-i of the first embodiment in that the mechanical drive 8-i can be actuated additionally or alternatively from the side or side instead of the top of the switching device. This will be explained in more detail below.

As in the embodiment in Fig. 19 is shown, a housing 46 of the connecting device 1, here the switching device, for the lateral actuation of the mechanical drive 8-i, a corresponding additional opening 47, through which the mechanical drive 8-1, as will be explained in more detail below, accessible is to operate the spring clamp 42-i by means of the mechanical drive 8-1 from the side.

The spring clamp 42-i and its mechanical drive 8-i can be provided in any type of connection device, for connecting or clamping an electrical conductor by means of spring clamp. The in the Fig. 1-17 . 18A and 18B , Shown embodiments of the switching device 1, as well as in Fig. 19 and subsequent ones Fig. 23-26 Switching device shown, are only examples of connecting devices 1 according to the invention with at least one or more spring terminals 42-i and their mechanical drives 8-i. However, the invention is not limited to a switching device for a busbar system limited as a connection device 1. In principle, the connection device with the at least one spring-type terminal 42-i and its mechanical drive 8-i can be any type of connection device which is provided or suitable for connecting an electrical conductor by means of the spring-type terminal 42-i.

The spring clamp 42-i, has a support leg 48 and a prestressed spring leg 49. The spring leg 49 has an insertion opening 50, which serves to insert the electrical conductor 51. For insertion of the electrical conductor 51 into the insertion opening 50 of the spring leg 49, the spring-loaded terminal 42-i is pressed by the mechanical drive 8-i toward the support leg 48 in order to be able to introduce the electrical conductor 51 into the insertion opening 50. The spring-loaded terminal 42-i is in this case moved from a closed position, in which no electrical conductor 51 is inserted or insertable into the insertion opening 50, into an open position by the mechanical drive 8-i, in which an electrical conductor can be inserted into the insertion opening is. Fig. 19 shows here the spring clamp 42-i in its open position, wherein an electrical conductor 51 inserted in the insertion opening 50 of the spring clamp 42-i and by means of spring clamp 42-i can be clamped. The electrical conductor 51 is thereby clamped by means of the spring-type terminal 42-i against a terminal contact 37-i.

In the in Fig. 19 illustrated embodiment of the spring clamp 42-i, the end 52 of the support leg 48 is optionally also added and guided in the insertion opening 50 of the spring leg 49. This can additionally ensure that the spring leg 49 and the support leg 48 do not unintentionally rotate laterally against each other. Furthermore, the spring leg 49 can be additionally guided when it is moved between the open position and the closed position of the spring-loaded terminal 42-i. In principle, the end 52 of the support leg 48 also be exposed and accordingly not be included in the insertion opening 50 (not shown).

As in the embodiment in Fig. 19 is shown, the spring leg 49 has a first spring leg portion 49-1 and a second spring leg portion 49-2. The first spring leg portion 49-1 is connected to the support leg 48. The second spring leg section 49-2 again has the insertion opening 50 and is angled away from the first spring leg section 49-1 to the support leg 48. As described above, the support leg 48 can optionally be additionally received and guided in the insertion opening 50 of the second spring leg section 49-2 with its end 52.

The support leg 48 is designed such that it rests on a connection contact or outgoing contact 37-i, wherein the spring leg 49 can be pressed by the mechanical drive 8-i to the support leg 48 and an electrical connection can be provided between the in the spring terminal 42- i clamped electrical conductor 51 and connected to the terminal 37-i electrical device, such as an electrical fuse, etc ..

In the in Fig. 19 shown embodiment, the support leg 48 is applied, for example, to a departure contact 37-i. The outgoing contact 37-i, as previously, for example, in the Fig. 3 . 4 . 15 . 16 and 17 shown, for example, by two current bar 44-i, 45-i formed. The lower current bar 45-i or bridge ensures that, in the switched-on state of the switching device 1, the electrical contact between the outgoing contact 37-i and the electrical device in the receiving unit or drawer 4-i is not interrupted.

The in Fig. 19 shown mechanical drive 8-i for driving or actuating the associated spring clamp 42-i according to the second embodiment, as previously with reference to the Fig. 1-4 . 13A-13C . 14A-14C and 15-17 described mechanical drive of the spring-loaded terminal according to the first embodiment, a drive element 39-i and a knife 41-i. The knife 41-i has a wide side 53-1 and a narrow side 53-2 for actuating the spring-type terminal 42-i.

The knife 41-i is disposed at one end of the drive member 39-i and rotatable by means of the drive member 39-i for opening and closing the spring clamp 42-i.

In the in Fig. 19 In the embodiment shown, the spring-loaded terminal 42-i is in its open state for insertion of the electrical conductor 51 into the insertion opening 50 of the second spring leg section 49-2. For this purpose, the knife 41-i is rotated by means of the drive element 39-i into the open position, in which the conductor 51 can be inserted into the insertion opening 50 of the second spring leg section 49-2. In this case, the knife 41-i is rotated so far that it presses with its broad side 53-1 the first spring leg portion 49-1 against the support leg 48 and the insertion opening 50 of the second spring leg portion 49-2 is released for insertion of the electrical conductor 51.

The design of the mechanical drive 8-1 for the spring-type clamp 42-i in one possible embodiment allows a rotation of e.g. up to 90 ° or up to 95 °.

Optionally, at least one additional nub 54 may be used to maintain the opened spring clamp 42-i in a stable position. An unintentional closing of the spring clamp 42-i is then excluded. The nub 54 in the embodiment in FIG Fig. 19 is arranged on the circumference of the drive element 39-i.

For lateral actuation or lateral rotation of the spring clamp terminal 42-i in the circumferential direction, the drive element 39-i at its periphery on a projection 55 or a bulge.

By pressing the projection 55, for example by means of a finger or thumb, the drive elements 39-i and the knife 41-i connected to it are rotated and the spring clamp 42-i is rotated from the closed position to the open position or vice versa from the open position into the closed position. As soon as the knife 41-i is rotated away from the spring leg 49 with its broad side 53-1, the spring leg 49 can spring back into a starting position in which the spring-loaded terminal 42-i is closed. The spring clamp 42-i can thus snap over from its open position to the closed position, thereby clamping the inserted into the insertion opening 50 electrical conductor 51.

At the in Fig. 19 As shown, the protrusion 55 is formed at a first end of a rocker switch 56 of the drive member 39-i. The actuating rocker 56 is provided on the circumference of the drive element 39-i and is tiltably positioned in the circumferential direction on the drive element 39-i. The rocker switch 56 allows by their tilting back and forth not only a rotation of the mechanical drive 8-1 in a circumferential direction, but a corresponding forward and backward rotation of the mechanical drive 8-i and its knife 41-i. For this purpose, the actuating rocker 56 at a first end to the projection 55 which, when pressed, the mechanical drive 8-1 and its knife 41-i in the circumferential direction rotates forward.

At a second opposite end, the actuating rocker 56 optionally has a recess 57, in which a tool, such as a screwdriver, is receivable. By means of the screwdriver received in the recess 57, the actuating rocker 56 and the associated mechanical Drive 8-i are rotated back in the circumferential direction.
As described above, the housing 46 of the connecting device, in particular of the switching device 1, for the actuation of the actuating rocker 56 of the mechanical drive 8-i has a corresponding lateral housing opening 47. The actuating rocker 56 protrudes to actuate preferably laterally through the opening 47 out of the housing 46, so that they are easily pressed by a fitter from the outside and particularly preferably the projection 55 by hand without an additional tool, such as a screwdriver, etc. can.

In one embodiment, the housing 46 of the switching device 1, as in the following Fig. 26 is shown to be formed with a trough-shaped recess 58 in which the opening 47 is provided, so that the actuating rocker 56 projects out of the opening 46, for example, does not protrude beyond the housing width of the switching device 1. The trough-shaped recess 58 is preferably designed such that it allows an operation of the projection 55 of the actuating rocker 56 by hand, in particular with a finger or a thumb.

In the embodiment in Fig. 19 is the drive element 39-i of the mechanical drive 8-i, in particular the drive element 39-i of the first embodiment, in addition to a tool holder, such as a slot 40-i, for attaching a screwdriver and / or an actuator for actuating the drive eighth -i provided. The actuator 59 is shown in the following Fig. 20 indicated by a dotted line and formed, for example, as a handle, in particular a rotary handle.

Upon rotation of a recorded in the tool holder or the slot 40-i screwdriver or turning on the handle 59, the drive element 39 -i and its associated knife 41-i for moving the spring clamp 42-i between the open position in which an electrical conductor 51 is inserted into the insertion opening 50 of the spring clamp 42-i, and the closed position in which the electrical conductor 51 in the spring clamp 42-i is clamped rotated.
In Fig. 20 is a perspective view of the drive 8-i of the spring clamp 42-i according to Fig. 19 shown.

The mechanical drive 8-i in this case has the drive element 39-i. At one end of the drive element 39-i, the blade 41-i is provided and at the other end the slot 40-i for attaching a screwdriver to rotate the drive 8-i. In addition or as an alternative to the slot 40-i, in one embodiment of the drive element 39-i, the actuating element 59 may be provided for actuating the drive 8-i. The actuating element 59 is in Fig. 20 indicated by a dotted line and formed, for example, as a handle, in particular a rotary handle.

As previously described, the knife 41-i has a wide side 53-1 and a narrow side 53-2 for actuating the spring-type clamp 42-i.

Furthermore, on the circumference of the drive element 39-i, the actuating rocker 56 is designed for the lateral actuation or rotation of the mechanical drive 8-i in the circumferential direction.

In the in Fig. 20 In the embodiment shown, the drive element 39-i and the knife 41-i are designed as two parts and the knife 41-i is attached to the drive element 39-i. The knife 41-i here is, for example, a metal blade and the drive element 39-i, for example, a plastic part, such as a plastic injection molded part.

For attachment, the knife 41-i is, for example, in a recess or a slot in the drive element 39-i pressed or molded in the drive element 39-i, for example, overmoulded. However, the invention is not limited to the mentioned examples for attaching the blade 41-i to the drive element 39-i, but any other suitable attachment of the blade 41-i to the drive element 39-i may be provided.

The drive element 39-i and the knife 41-i may also be integrally formed (not shown), for example made of plastic, metal, metal casting, etc.
The actuating rocker 56 is also formed integrally with the drive element 39-i, for example as an injection molded part. In one embodiment, the actuating rocker 56 or just the projection 55 of the actuating rocker 56 may also be designed to be fixed as a separate part to the drive element 39-i.

Furthermore, the drive element 39-i may, as described above, have at least one nub 54, which ensures that the opened spring-loaded terminal 42-i remains in a stable position. For example, the knob 54 is positioned and configured on the drive element 39-i of the mechanical drive 8-i such that when the drive 8-i opens the spring clamp 42-i sufficiently to insert an electrical conductor into the insertion opening, the knob 54 is suitable brought into contact with the housing 46 to hold the mechanical drive 8-i in the open position of the spring-loaded terminal. For example, a frictional contact or nip contact may be provided between the nub 54 and the housing 56 which causes the mechanical drive 8-i with its nub 54 in the housing 46 to be held in position and unable to rotate further.

In this way, the mechanical drive 8-i need not be held by a fitter or installer, for example by means of a screwdriver, in a position in which the spring-loaded terminal 42-i is open. Instead, the mechanical Drive 8-i are kept by itself in this position in the housing 46 by means of its at least one knob 54. An unintentional closing of the spring clamp 42-i is then excluded. The connection nub 54 of the mechanical drive with the housing 46 can be released again, for example by actuating the actuating rocker 56 or by inserting a screwdriver into the slot 41 of the drive element 39-i.

The drive element 39-i can be additionally over-twisted in the open position of the spring-loaded terminal 42-i, for example, in one embodiment, and held by the knob 54, as described above, in the housing 46 of the switching device in the open position until the drive. 8 -i is turned back to the closed position of the spring-loaded terminal 42-i.

In one embodiment, the drive element 39-i, as previously described in FIGS Figs. 13A-C and 14A-14C described drive element optionally have an additional not shown recess, in particular for receiving a pin (pin 43-i in the Fig. 13A and 14A ) of a movable front cover of the switching device. The pin of the movable front cover moves upon actuation of an operating unit for switching on the switching device 1 in the recess of the drive element 39-i, so that the switching device 1 can take the switched-on state.

With spring-loaded terminal 42-i open, as described in Fig. 19 shown vice versa the pin of the movable front cover when operating the control unit to turn on the switching device does not retract into the corresponding recess of the drive element 39-i, so that switching on the switching device 1 is blocked 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, the switching device will be switched on 1 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 switching device 1 can be turned on.

In Fig. 21 is another perspective view of the mechanical drive 8-i according to Fig. 19 shown. In this case, the drive 8-i is shown from the side to which the blade 41-i is attached to the drive element 39-i. As described above, the drive member 39-i has circumferentially the operating rocker 56 with the protrusion 55 for rotating the driving member 39-i and its associated blade 41-i in the circumferential direction when the rocker switch 56 is manually depressed. The knife 41-i has a wide side 53-1 and a narrow side 53-i as described above.

Furthermore, the drive element 39-i optionally has the at least one additional nub 54.

In Fig. 22 is the mechanical drive element 8-i according to the Fig. 19 - 21 shown in a further perspective view. In this case, in addition to the slot 40-i and the knob 54, the actuating rocker 56 for forward and backward rotation of the drive member 39-i shown in the circumferential direction. As described above, the operating rocker 56 is formed on the circumference of the driving member 39-i. The actuating rocker 56 in this case has at one end the projection 55, which, when pressed against the mechanical drive 8-1 and its knife 41-i in the circumferential direction, for example, rotates forward.

At the other end, the actuating rocker 56, the recess 57, in which, for example, a screwdriver, is receivable. By means of the screwdriver inserted in the recess 57, the actuating rocker 56 and the drive 8-i connected to it can be turned back again.

In the FIGS. 23 to 25 is a arranged within a switching device 1 spring clamp 42-i and its drive 8-i shown according to the second embodiment in various positions in a detail section.

Fig. 23 shows here the spring clamp 42-i in its closed state, with no electrical conductor in the insertion opening 50 of the second spring leg portion 49-2 of the spring clamp 42-i is inserted. The Fig. 24 and 25 show the spring clamp 42-i again in the open state, wherein in Fig. 25 an electrical conductor 51 is inserted into the insertion opening 50 of the spring-loaded terminal 42-i.

The mechanical drive 8-i of spring cage terminal 8-i corresponds to the drive as in the Fig. 19 to 22nd is shown. Accordingly, the mechanical drive 8-i has the drive element 39-i, which is provided at one end with the slot 40-i for inserting a tool, such as a screwdriver, for rotating the mechanical drive 8-1 and its Knife 41-i can be operated in the circumferential direction.

Further, on the circumference of the driving member 39-i, there is formed the operating rocker 56 which can be operated to laterally actuate the driver 8-i and its blade 41-i in the circumferential direction.

In the in Fig. 23 illustrated closed state of the spring clamp 42-i blocks the support leg 48, the insertion opening 50 of the spring leg 49 and the second spring leg portion 49-2 such that no electrical conductor in the insertion opening 50 can be inserted. In one embodiment, the knife 41-i of the mechanical drive 8-i can rest with its broad side 53-1 against the spring limb 49 of the spring clamp 42-i, as in FIG Fig. 23 is shown. Optionally, the mechanical drive 8-1 additionally bias the spring leg 49, wherein the bias However, it is not sufficient to press the spring leg 49 against the support leg 48 so far that it releases the insertion opening 50 for insertion of an electrical conductor.

As in Fig. 24 is shown, the mechanical drive 8-i for opening the spring clamp 42-i and for introducing an electrical conductor in the insertion opening 50 at least turned so far that his knife 41-i the spring leg 49 sufficiently against the support leg 48 presses to the insertion 50 release. For this purpose, the knife 41-i is rotated with its broad side 53-1 in the direction of the spring leg 49 and brought into contact therewith. The knife 41-i presses with its broad side 53-1 against the first spring leg portion 49-1 of the spring leg 49 and pushes it far against the support leg 48, that this the insertion opening 50 of the second spring leg portion 49-2 releases, so that a conductor can be introduced in it, as in Fig. 25 is shown. The knife 41-i may be made of steel, for example.

The opening of the spring clamp 42-i by turning the drive 8-i and its knife 41-i can in this case take place once from above or the upper end of the drive 8-i by means of a screwdriver, which in the slot 40-i of the drive element 39 -i is introduced and turned.

Likewise, the spring clamp 42-i can also be opened by the actuating rocker 56 is actuated from the side of the housing 46 of the switching device 1 and in this case the mechanical drive 8-i is rotated with its knife 41-i in the circumferential direction. This is in the embodiment in Fig. 23-25 the projection 55 of the actuating rocker 56 is pressed on the side of the housing 46 of the switching device 1. As a result, an electrical conductor can be introduced from below into the insertion opening 50 of the opened spring-loaded terminal 42-i, as is particularly easy in Fig. 25 shown without the need for additional tools in the installation of the electrical conductor.

With the at least one additional nub 54 can be ensured that the opened spring clamp 42-i remains in a stable position.

The closing of the spring clamp 42-i can then be done by turning the slot 40-i at the upper end of the drive element 39-i by means of a screwdriver. Likewise, the spring clamp 42-i can also be closed by operating the rocker switch 56 by a screwdriver is inserted into the recess 57 of the rocker switch 56 and this moves back or tilts back.

If the spring-type terminal 42-i is closed, the spring-type terminal 42-i clamps the outgoing contact 37-i between its support leg 48 and the electrical conductor 51 accommodated in the insertion opening 50.

Fig. 26 shows a detailed view of a switching device 1 with a spring clamp 42-i and the drive 8-i according to the FIGS. 23 to 25 , In this case, an electrical conductor 51 is inserted from below in the housing 46 of the switching device 1 and connected to the spring-type terminal 42-i for connecting an electrical device to an electrical device in the switching device 1, such as a recorded in the receiving unit of the switching device electrical fuse.

As in Fig. 26 is shown, the housing 46 has a lateral opening 47 for the actuation of the actuating rocker 56 of the drive 8-i. The actuating rocker 56 protrudes at least with its projection 55 for actuating laterally through the opening 47 out of the housing 46, so that the projection 55 by a technician from the outside easily, without an additional tool, such as a screwdriver, etc., can be operated ,

The housing 46 has in one embodiment, a trough-shaped recess 58, in which the opening 47 is provided for the actuating rocker 56. The trough-shaped recess 58 is formed such that the actuating rocker 56 protrudes suitably with its projection 55 from the opening 47 for actuating, but does not protrude beyond the housing width of the switching device 1. The trough-shaped recess 58 preferably allows actuation of the actuating rocker 56 by hand by pressing the projection 55 of the actuating rocker 56th

In the in Fig. 26 In the embodiment shown, the actuating rocker 56 can also be moved back again by inserting a tool, such as a screwdriver, into the recess 57 of the actuating rocker 56 and turning it back or back in the circumferential direction of the drive 8-i. At the previous with respect to the FIGS. 19 to 26 described embodiments of connection devices 1, is opened to connect an electrical conductor 51, the respective spring clamp 42-i. This will be a suitable tool in the FIGS. 19 to 26 is inserted from the top of the housing 46 of the connector 1 into a slot 40-i at the top or free end of the mechanical drive 8-i and the drive 8-i is rotated until the spring clamp 42-i is in its open position. Subsequently, the electrical conductor 51 is inserted into the insertion opening 50 of the spring-loaded terminal 42-i. However, the cable entry of the electrical conductor 51 in the open spring clamp 42-i happens from the opposite side or bottom of the housing 46. Thus, from two different, opposite sides of the housing 46, the spring clamp 42-i is opened and the electrical conductor 51 is inserted into the opened spring clamp 42-i.

In order to further simplify the connection of the electrical conductor 51, the drive element 39-i in the second Embodiment laterally the additional projection 55 or the additional rocker switch 56 with the projection 55 on. The projection 55 or the actuating rocker 56 with the projection 55 can be easily operated from the side to open or close the spring clamp 42-i. The connection of an electrical conductor 51 by means of spring clamp 42-i can be further simplified.

As previously described, this projection 55 projects laterally out of the housing 46 through the associated housing opening 47. Thus, the projection 55, for example, does not protrude beyond the width of the housing 46 unintentionally, preferably the trough-shaped, recessed contour is introduced in the housing wall. With the help of this, the projection 55 can be easily operated without tools and pressed by a fitter with his finger or thumb.

The wiring effort is thereby reduced to an absolute minimum. Thus, the spring clamp or its spring leg can be factory biased, i. the product is delivered with already opened clamps.

For example, the installer puts the electrical leads only in the opened spring-type terminals 42-i and clamps them by actuating the actuating rocker 56 with the thumb or a tool, thereby closing the spring-loaded terminal 42-i.

The in the FIGS. 19 to 26 illustrated embodiments of the spring clamp 42-i and its mechanical drive 8-i have the advantage that the operation of the projection 55 for rotating the mechanical drive 8-i in one direction, for example, to open or close the spring clamp 42-i, no additional tool , like a screwdriver, needed. As a result, no additional tool is needed when installing an electrical conductor 51. In addition, safe installation is possible, as it is for an installer no uncertainty with respect to the direction of rotation of the mechanical drive 8-i comes. Furthermore, the spring-loaded terminal 42-i can automatically snap back into its insertion opening 50 after insertion of an electrical conductor 51, without the need for additional effort. Once the spring leg 49 is no longer pressed by the broad side 53-1 of the blade 41-i of the mechanical drive 8-i against the support leg 48, the spring leg 49 can spring back automatically in the direction of its initial position.

The previously with respect to the Figures 1-26 described embodiments of the spring-type terminal 42-i and its mechanical drive 8-i can be used in switching devices, in particular multi-pole switching devices, or other connection devices 1, in which electrical conductors 51 are to be connected. The electrical conductors 51 can be connected by means of the spring-type terminal 42-i, for example, to electrical devices in the connecting device 1, such as switch disconnectors, fuse elements, fuse holders, circuit breakers, such as RCCB, etc.

By means of the connecting device 1 and its at least one spring clamp 42-i and its mechanical drive 8-i, for example, electrical conductors with a cross section in a range between 1.5mm ² and 16mm ^{2 can be} connected. However, the invention is not limited to this area.
As before with reference to the Fig. 1-26 has been described, a spring clamp 42-i is provided with a mechanical drive 8-i for actuating the spring clamp 42-i to move it to an open position in which an electrical conductor 51 in the insertion opening 50 of the spring clamp 42-i insertable is and a closed position in which an inserted in the insertion opening 50 electrical conductor 51 is clamped in the spring-type terminal.

As a spring-loaded terminal in this case, in particular, a conventional spring-loaded terminal can be used and actuated by means of the mechanical drive 8-i.

Furthermore, as previously described with reference to FIGS Fig. 1-26 has been described by way of example, a mechanical drive 8-i provided for actuating the spring-type terminal 42-i and in particular also of conventional spring-type terminals.

LIST OF REFERENCE NUMBERS

• 1 connection device
• 8-i drive
• 37-i outgoing contact
• 39-i drive element
• 40-i slot
• 41-i knife
• 42-i spring-loaded terminal
• 43-i cones (in the Fig. 13A and 14A for retraction into a recess of the drive)
• 44-i power strap
• 45-i power strap
• 46 housing
• 47 housing opening
• 48 support legs
• 49 spring legs
• 49-1 first spring leg section
• 49-2 second spring leg section
• 50 insertion opening
• 51 electrical conductors
• 52 end of the support leg
• 53-1 wide side of the knife
• 53-2 narrow side of the knife
• 54 knob
• 55 lead
• 56 rocker switch
• 57 deepening
• 58 trough-shaped depression (in the housing)
• 59 handle

Claims (13)

1. Connection device (1) for connecting at least one electrical conductor (51) with at least one spring-type terminal (42-i) which is provided in a housing (46) of the connection device (1) and which comprises a mechanical drive (8-i), wherein the mechanical drive (8-i) is installed in the housing (46) and comprises a blade (41-i) which has a broad face (53-1) and a narrow face (53-2) for actuating the spring-type terminal (42-i), wherein using its broad face (53-i) the blade (41-i) moves the spring-type terminal (42-i) into an open position in which the electrical conductor (51) may be inserted into an insertion opening (50) of the spring-type terminal (42-i), wherein at least one projection (55) is formed on the mechanical drive (8-i) and protrudes through a housing opening (47) of the housing (46) to actuate the mechanical drive (8-i), wherein the projection (55) is formed on the periphery of the mechanical drive (8-i) and wherein the mechanical drive (8-i) is rotated by means of pressing the projection (55) and the spring-type terminal (42-i) may be rotated from the closed position into the open position or conversely from the open position into the closed position.
2. Connection device according to claim 1,
   wherein using its narrow face (53-2) the blade (41-i) makes it possible to move the spring-type terminal (42-i) into a closed position in which the electrical conductor (51) is gripped in place in the spring-type terminal (42-i) .
3. Connection device according to claim 1 or 2,
   wherein the spring-type clamp (42-i) comprises a support leg (48) and a spring leg (49, 49-1, 49-2), which has an insertion opening (50) for inserting the electrical conductor (51) and is pressed towards the supporting leg (48) by the broad face (53-1) of the blade (41-i) of the mechanical drive (8-i).
4. Connection device according to claim 3,
   wherein the spring leg (49, 49-1, 49-2) of the spring-type terminal (42-i) is sprung back into a closed position in which the electrical conductor (51) is gripped in the spring-type terminal (42-i) when the narrow face (53-2) of the blade (41-i) is in contact with the spring leg (49, 49-1, 49-2).
5. Connection device according to any one of the preceding claims,
   wherein the mechanical drive (8-i) comprises a tool seat on one end, in particular a slit (40-i), for receiving a tool and actuating the spring-type terminal (42-i) by means of the mechanical drive (8-i).
6. Connection device according to any one of the preceding claims,
   wherein the mechanical drive (8-i) comprises an actuation element on one end, in particular a handle (59) or lever, for actuating the spring-type terminal (42-i) by means of the mechanical drive (8-i).
7. Connection device according to any one of the preceding claims,
   wherein the projection (55) is provided on a first end of an actuation rocker (56), wherein a depression (57) for introducing a tool, in particular a screwdriver, is provided on a second end of the actuating rocker (56) which lies opposite said first end.
8. Connection device according to any one of the preceding claims,
   wherein the mechanical drive (8-i) comprises at least one knob (54), by means of which the mechanical drive (8-i) can be fixed in a predetermined position in the housing (46), wherein in the predetermined position the spring-type terminal (42-i) is preferably in its opened position.
9. Connection device according to any one of the preceding claims, wherein the mechanical drive (8-i) comprises a drive element (39-i) having a first and second end, wherein the blade (41-i) is provided on the first end.
10. Connection device according to claim 9,
    wherein the blade (41-i) of the mechanical drive (8-i) is pressed into a slit in the drive element (39-i) or formed integrally in the drive element (39-i), in particular by means of injection moulding.
11. Connection device according to any one of the preceding claims,
    wherein the mechanical drive (8-i) is installed in the housing (46) of the connection device (1) so as to rotate in the peripheral direction.
12. Connection device according to any one of the preceding claims,
    wherein the housing (46) comprises a cavity-shaped depression (58) in which the housing opening (47) is provided.
13. Method for connecting at least one electrical conductor (51) in a connection device (1) in accordance with any one of the claims 1 to 12, comprising the steps of:

    moving the spring-type terminal (42-i) into an open position by means of the mechanical drive (8-i);

    inserting the electrical conductor into an insertion opening (50) of the spring-type terminal (42-i); and

    moving the spring-type terminal (42-i), by means of the mechanical drive (8-i) from the open position thereof into a closed position in which the electrical conductor (51) inserted into the insertion opening (50) is gripped in place in the spring-type terminal.

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