EP1246213A2 - Power switch block of size 00 - Google Patents

Abstract

A casing (1) has an underpart (4) with sidewalls (5) fastened on it and connectors (6) for current bus bars. A switch cage (7) moves crosswise to the casing's longitudinal (2) and lateral (3) axes and has fuse cutout inserts and guiding fixed links. A switch lever (11) has bogie pins (15) and journals (14) guided in the sidewalls in complementary, parallel first and second recesses.

Description

The invention relates to a power switch, consisting of a housing with a lower part and attached side walls and with connections for busbars, from one relative to the housing, transverse to the longitudinal and transverse axis movable cage with it arranged fuse links and guide bars and from a gear lever with at a distance mutually arranged pivot and bearing pins, which in complementary and parallel first and second recesses in the side walls of the housing, the second recess is open to the upper edge of the housing on the lever side and at the opposite, inner end of the second recess, a storage pocket for non-positive Support of the bearing pin is provided on the shift lever and a plate-shaped on the shift cage Shift lock unit is arranged with at least one inner locking cam, which in a Sliding groove is guided in the side wall of the housing.

NH fuse-links are switched with such load-switching strips, and they are used for this purpose Low voltage distribution of energy supply companies in industrial companies and large buildings used. In addition to protecting the connected circuits, these devices have also the task of carrying out certain systems or power supplies over a safe isolating section during inspection work switch off voltage.

With a NH fuse switch disconnector of the type mentioned at the beginning, three fuse links are used switched simultaneously. The load switch strip is installed in control cabinets. So that their Depth can be kept small, the power switch with its gearshift lever must have little depth require. Parts of the device that protrude too far into the operating aisle in front of the control cabinets can be disruptive or even cause an accident. On the other hand you can see to achieve a long gear lever. Do you want the power switch from the operating or switch the switch to the off position to enable loads, then this is done by swiveling the gear lever out. In older known power switch strips the shift lever is approximately at a right angle from the last body. This results in a very large and correspondingly unfavorable depth.

In contrast, an improved power switch of the type mentioned has an inexpensive one Arrangement of the pivot and bearing pins on the one hand and the complementary recesses in the side walls of the housing measures, on the other hand, provided that even when switched off Condition a small footprint is achieved and switching with low operating forces is possible, although, for example, three fuse links are switched simultaneously can.

In this known safety edge is by shifting the center of rotation of the pivot to the trunnion and back again created the opportunity from a switch-off position in to come to a parking position, in which the shift lever rests on the shift cage in parallel again can be pivoted back so that the safety edge in the control cabinet is only a small one Construction depth required and can also be secured with a lock.

But it has been shown that for switching from one position to the other position required mechanics with the pins and recesses particularly well with switch-disconnectors Sizes 1 to 3 works. With size 00 safety edges, guidance problems can occasionally occur occur, and in particular the measures to lock the switch cage, for example in the park position, not with the known locking unit with the movable buttons and Lugs are ensured. Halve in the direction of the transverse axis of the load switch Dimensions when changing from size 1 to 3 to the smaller version with size 00. Known Safety edges of sizes 1 to 3 have a width of 100 mm, for example, while the corresponding width with a size 00 safety edge is only 50 mm. The one for the mechanics necessary elements, such as pivot and bearing pins, guides and the like, then become approximately proportionately smaller, with the result that it is in the event of improper operation jamming can occur, especially through non-specialists. The switching paths for strips size 00 has remained about the same size as for devices size 1 to 3. In case of improper use Operating a proportionally reduced mechanism could be said that the mechanics are too unstable.

For example, a user only wants to replace fuse links and out of the off position do not get into the parking position, an inexperienced user may that when opening from the on position by the swing of its switching movement over the Switch-off position unintentionally reaches the third parking position. To avoid this, one has at the known safety edge of the type described at the switch cage a locking unit articulated with movable buttons and latches. The locking lugs are with recesses in the side wall of the housing can be brought into locking engagement. The well-known plate-shaped shift lock unit, also called locking unit, is parallel and flat next to a phase partition of the switch cage and is supported by this. The well-known shift lock unit is for its operation even pivoted to this phase partition via pivot points.

With a circuit breaker with three fuse links, it is understandable that two phase partitions be provided so that each fuse link against its neighboring Is sufficiently insulated. It has now been found that there is enough space for sizes 1 to 3 is to attach a plate-shaped switching block unit parallel to the phase partition is. With size 00 switch-disconnectors, this space is available for two plates, namely for the switch lock unit on the one hand and the phase partition on the other hand, not available. With a load switch the size 00 could not be locked.

It is therefore an object of the present invention to provide a power switch of the type mentioned to be redesigned so that the desired switching and locking positions also with size 00 can be achieved with good ease of use and reliably.

a) die Höhe der Seitenwand etwa gleich der Höhe der Schaltsperreinheit ist,

b) die Schaltsperreinheit eine außen angebrachte Kipptaste hat und eine weiter innen befindliche Kippachse hat, welche durch einen äußeren, im Abstand vom inneren Rastnocken befestigten Rastnocken und ein Loch in der Seitenwandung des Schaltkäfigs verläuft, und

c) daß am äußeren Ende der Schiebenut eine gegabelte Verriegelungsführung mit Anschlägen gegen die Bewegung des inneren Rastnockens in Richtung der Schiebenut vorgesehen ist.

This object is achieved in that

a) the height of the side wall is approximately equal to the height of the shift lock unit,

b) the shift lock unit has an externally mounted toggle button and has an inward tilt axis which runs through an outer, at a distance from the inner latching cam and a hole in the side wall of the switching cage, and

c) that a forked locking guide with stops against the movement of the inner latching cam in the direction of the sliding groove is provided at the outer end of the sliding groove.

With the help of the switch lever, the switch cage can also be used with a 00 size load switch Switched on position in the off position and then pulled out into a parking position and there so that the shift lever is parallel to the housing, especially in the park position, i.e. is arranged parallel to the upper edge of the housing on the shift lever side. This requires the Safety edge is only a relatively small one, both in the switched-on and switched-off park state Overall depth. Moving to the individual positions takes place by means of pivot pins and bearing pins, which shifted in the complementary recesses in the side walls of the housing can be. This makes the switch cage essentially perpendicular to the longitudinal and Transverse axis of the housing moves, because the recesses are open or closed slots in this direction of movement. To achieve the preferred shallow depth when open Circuit is switched by pulling out the switch cage using the switch lever from the switch-off position to the parking position, in which the bearing journal, as will be explained, from its guide comes out and thus disengages from the side wall, so that the Shift lever can be pivoted so that it is parallel to the longitudinal axis of the housing and on the upper edge of which is placed on top. This switching of the shift lever is achieved by shifting the center of rotation of the shift lever from the journal to the journal into it. As a result of the compact design, the advantage of a small structural depth can be achieved with a similar one Mechanics as for the size 1 to 3 safety edge.

Surprisingly, according to the invention, however, a shift lock unit of a similar type to that in use the last size 1 to 3. This is because the phase partition is left where the plate-shaped switch block unit is to be arranged away. So it's only at this point the plate-shaped shift lock unit arranged on the shift cage and movable relative to this. The switching lock unit advantageously takes over the effects of a phase partition. Thereby surprisingly, you only need one of the two elements, in this case the shift lock unit and not the phase partition. At a distance you can isolate a third fuse link a phase partition can be provided, but not with a shift lock unit is combined. According to the invention, only a single shift lock unit is used for a load switching strip provided here.

Due to the switch lock unit, the user does not switch to the off position, park position, without authorization or switch-on position. This provides the possibility, also from the off position, if, for example, a machine has been switched off, an accidental restart to prevent, for example, risk of injury to a worker working on the machine prevent.

The pivot can be attached to the shift lever or to the shift cage. He will be in a first elongated recess in the form of an elongated hole in the side wall. At a distance from The trunnion is located on the pivot pin, for example on the gear lever, and is in a second one Recess with the bearing pocket for non-positive support of the bearing pin. The Storage pocket extends a little from the second recess in the direction of the longitudinal axis of the housing while the second recess moves in the direction of movement of the switch cage Extends a bit and then ends so that the bearing journal emerge from the second recess and can move freely, namely to apply the shift lever to the upper edge of the housing and back. That is why the second recess is also open to the outside. The outside is outer, front side, which the user sees first when opening the control cabinet. Therefore the storage pocket is located further inside in the direction of the user's eye.

In the same way, the plate-shaped switching block extends essentially in the direction of view of the user, that is, from the outside in. On the inside, most distant from the viewer The end of the plate-shaped shift lock unit is consequently the at least one inner one Locking cams. The inner locking cam engages perpendicular to the direction of movement of the switch cage into a sliding groove in the side wall or comes into locking engagement with the same through a stop or similar. Before or after the locking engagement, the inner locking cam slides in the sliding groove, which is located in the side wall and is also in the direction of movement of the switch cage, i.e. perpendicular to the longitudinal and transverse axes of the housing.

Forming the height of the shift lock unit so that it is equal to the height of the side wall is the surprisingly simple function that the plate-shaped shift lock unit itself becomes a phase partition. Just like the one that is spaced apart and runs roughly parallel the actual phase partition is the plate-shaped switch block unit, guided with the switch cage, always between two fuse links, if these are used.

In contrast to the known switch lock unit, also called a locking unit Shift lock unit according to the invention designed simpler and yet highly effective. she is provided with a toggle button at its outer end. The user only needs to take them and can thus move the plate-shaped shift lock unit in the permitted direction, namely swivel about a tilt axis. The bracket of the outer locking cam of the shift lock unit is bendable, so that a tilting movement is made possible. The shift lock unit is held through a hole in the side wall of the switch cage, through which the outer locking cam extends extends. If you have this with tolerance or a small distance of 0.1 to 2 mm, preferably 0.5 to 1 mm, can engage in the hole in the cage wall, you can switch the switching unit around the resulting tilt axis swivel or tilt.

The power switch strip according to the invention has a forked locking guide at the outer end of the sliding groove with stops. The sliding groove is located in the side wall on the lower part. It is easy to make stops at desired locations in the groove in the groove. The least an inner locking cam of the shift lock unit is guided on the one hand in the sliding groove, on the other hand, can only move up to the intended stop because of this Sliding movement is in the way. The locking guide is bifurcated for alternative movement options pretend. The tilt axis allows tilting of the shift lock unit both in one direction as well as in the other. This allows the inner locking cam to be moved to one or the other side of the locking guide, which of course with the sliding groove communicates. In this way it is possible to switch the cage up to a certain point Extend height (for example, switch-off position), the inner locking cam then against hits the first stop and is stopped there. By tilting the shift lock unit in one direction, the inner locking cam can then pull out the Allow switch cage, for example in a parking position. Further stops can be provided there be to further pull out and / or push in the locking cam and thus the To prevent switching cage. For example, you can use these stops to define the parking position.

It can be seen how a load-switching strip of size is also affected by the measures according to the invention 00 can be switched comfortably, switching and locking positions reliable and can be reached very comfortably.

It is also expedient according to the invention if at a distance on the inside of the switch cage larger than the thickness of the plate-shaped shift lock unit two guide tongues from each other are attached. The plane spanned by each of the two guide tongues is parallel to the more distant phase partition. It is also parallel to the plate-shaped Shift lock unit, which is between the two spaced-apart guide tongues inserted and held in a form-fitting manner. It's not just one, it's two guide tongues, so that the shift lock unit is inserted between them and held by them can be. There may also be small protrusions on the inner surfaces of the two guide tongues be provided to the tilting with the plate-shaped switching block inserted between them to enable. The two guide tongues extend from the bottom or inside of the switch cage only a small distance to the inside, for example 5 to 25 mm, preferably 10 to 15 mm. It must be ensured that neither of the two guide tongues up to the space inside comes between two fuse links, because this space is already from the plate-shaped Shift lock unit is taken, the height of which is approximately equal to the height of the side wall the housing is as described above. Arrangement, mounting and actuation options of the Thanks to the two guide tongues, plate-shaped shift lock units are also excellent for one 00 size load switch.

Another advantageous embodiment of the invention is characterized in that the forked Locking guide in continuation of the sliding groove has two groove branches forming the fork, one of which ends in a storage bag. In top view of the sliding groove you can see the forked Call the locking guide V-shaped, with the lower tip of the V at the transition point between the locking guide and the sliding groove. The inner locking cam can slide outwards along the sliding groove or alternatively inwards and in the event of sliding outwards, when the switch cage moves from the on to the off or even pushed into the park position, from the sliding groove directly into one or forward another groove branch of the locking guide. In which of the slot branches he slides depends on the position of the plate-shaped shift lock unit, which is in the longitudinal direction of the housing can be tilted forward or alternatively back. At one of the two slot branches is in continuation the slot branch a storage pocket arranged parallel to the longitudinal axis of the '' Housing extends and is open on one side, i.e. on this open side in the groove branch empties. The latching cam can thus get into the storage pocket from the sliding groove via the groove branch and vice versa.

It is also advantageous according to the invention if both groove branches are at least partially in Extend outwards to the upper edge of the housing on the shift lever side and a slot branch runs freely outwards to this upper edge. The latter is the slot branch, that doesn't end in a storage bag. Rather, this groove branch is on the outside on the upper edge of the housing so open that the locking cam on sliding outwards from the sliding groove this slot branch can slide completely out of the locking guide, with the result that the Switch cage can remove from the housing.

It is also advantageous according to the invention if in the plate-shaped switching block unit in addition to the at least one outer locking cam, forming a support, a recess for slight bending of the supporting bridge is attached. The shift lock unit has a plate shape. In Top view perpendicular to the plate, the main part is a rectangular plate with two longer, opposite narrow edges and two shorter, perpendicular to them narrow edges. The at least one outer edge is located next to the outer narrow edge Locking cams. This protrudes over the longer narrow edge perpendicular to this in the plate plane in addition, approximately in the area of the outer short, narrow edge. Through this very outside The cam axis also runs the tilt axis, which has already been described above.

There is preferably a retaining tongue on the outer narrow edge of the shift lock unit, via which a toggle button can be clamped and / or locked. The user presses in the direction of view perpendicular to the plate of the shift lock unit on the toggle button, then the larger swings lower or inner part of the plate, namely below the tilt axis, towards the viewer. This is the tilting of the shift lock unit in one direction.

The outer locking cam is located so that the shift lock unit can be installed particularly easily on a support bar, and this is through a recess in the plate of the shift lock unit in Area of the outer locking cam formed. When mounting, the supporting web can bend slightly, so that the outer locking cam by a fraction of a millimeter, possibly up to 2 mm, from the narrow longer edge can be moved outside inwards. This can be additional be favored by an insertion bevel on the outside of the locking cam. So you can more easily insert the outer locking cam into the hole mentioned in the side wall of the switch cage. In this way, the shift lock unit is securely in the side wall above the locking cams of the switch cage. The outer locking cam extends in the same direction as the inner one Locking cams or parallel to this direction of extension.

In a further advantageous embodiment of the invention, two are located opposite one another Narrow edges of the plate-shaped shift lock unit each have an inner and an outer locking cam attached. In principle, an outer and an inner locking cam on the shift lock unit are sufficient, But this works particularly cheaply if four locking cams are provided, one outer and one inner detent cam on each of the two longer, opposite one another Narrow edges. The attacking forces are then halved and prevented by the symmetrical structure of any jamming.

It is also useful if in a further embodiment of the invention on the inside the switch cage in the longitudinal direction of the load switching strip at a distance from the two guide tongues, which is equal to the distance between two fuse links, attached a flexible phase partition The free, inner end of which bears a stop which, in the outermost, parked position of the Switch cage can be brought into locking engagement with a cover fastened to the lower part, and if from At least one cheek of the shift lever protrudes an operating lug such that when pivoting the shift lever the stop is moved from the cover out of locking engagement. It understands yourself that the phase partition on the inside of the switch cage along this along one Plane is attached, which is parallel to the plane of the two guide tongues. Between the plate-shaped Shift lock unit and thus the two guide tongues on the shift cage on the one hand and the Phase partition on the switch cage, on the other hand, a fuse insert comes to rest; and outside one additional fuse link each, if it is a safety edge with three fuse links is. This is fulfilled on the condition that the two guide tongues on the one hand and the Phase partition on the other hand in the longitudinal direction of the load switching strip at the same distance from each other are arranged like two centers of adjacent fuse links. The phase partition according to the invention is advantageously flexible. On the inside of the switch cage is one side attached to the phase partition, and the end of the phase partition opposite this side can be bent freely to a certain extent and also carries a stop. Is the Phase partition not bent, but straight or even when unloaded, then bumps the stop when moving the switch cage from the outside inwards to one attached to the lower part Cover in such a way that the switch cage is not further inwards towards the switch-on position can be moved. This is a lockout procedure. It is of course important to ensure that the cover attached to the lower part sits at the right height, so that the locking effect is correct Moment occurs. In a practical embodiment, it has been found to be preferred if you use the contact covers already attached to the base in the safety edge, against which this stop on the phase partition hits to lock.

The phase divider is bent to disengage the stop by an operating lug attached to at least one cheek of the shift lever and so is attached above that when pivoting the shift lever and thus the cheek Actuating nose runs against the phase partition and bends it so that the stop of the cover is disengaged. You can in this way in the locked position Relieve the forces acting on the shift lock unit, for example distribute it in half. Would have you only have the locking guide with a stop, for example a stop in the area of Storage pocket, intended for locking by the inner locking lugs of the shift lock unit, then the lock against pulling out and pushing in the switch cage would be asymmetrical, so that tilting of the switch cage in one direction or another is not excluded would. Due to the advantageous arrangement of the phase partition with the stop the supporting forces in the event of unauthorized or unintentional switching on or attempted switching off balanced. The cover on the lower part of the housing is like a counter-stop to the stop against the phase partition and thereby prevents the switching cage from moving relative to the housing.

For example, if you turn the gear lever out of the park position to the off position to come, then we bent the phase partition outwards through the actuating tab and the stop disengaged from the cover. Only then is the Switch cage possible from the park to the off position. This is an increased ease of use, and defined relationships are created. During this swiveling of the shift lever the moves from the space-saving parking position towards the switch-off position Bearing pin next to the side wall in the direction of the second recess and open on the outside thence into the area of the bearing shell because the stop on the phase partition is out of lock engagement is. These defined conditions can shift the rotation of the Shift lever from the pivot back to the bearing pin. In compliance with this defined Conditions avoid jamming or blocking the actuation, especially in the case an inexperienced user. Reliable switching means and locking measures are thus provided possible to tilt the switch cage in different positions relative to the housing lock inoperable.

It goes without saying that a sliding groove is preferably not only present in one side wall, but also symmetrically on the opposite side wall, especially since the housing in Cross-section has a U-shape and thus the opposite two inner locking cams in the two then opposite sliding grooves run and controlled by these in their movement can be.

An assembly of the new load switch and in particular the plate-shaped switch block is simple and convenient. The two guide plates on the inside of the switch cage are used for Example of a better introduction of the plate-shaped shift lock between the two guide plates.

In operation, the shift lever is flat on the cage, and this lies on the upper edge of the Side walls so that the safety edge in the control cabinet has an extremely low overall depth Has. To switch off, the user opens the control cabinet, grips the shift lever and pulls this together with the switch cage to the outside, in the opposite direction of his view, to the off position. The switch lock unit allows it to be pulled out to the off position by that the inner locking cams in the sliding groove to the outside until the start of the locking guide slide. There the inner locking cams run against a stop which is on the lower one Tip of the V the locking guide is arranged to think. The user must now decide whether he wants to use one or the other slot, i.e. remove the switch cage and wants to remove it from the housing or into the parking position. If the latter is the case, it will the shift lock unit tilted so that the inner locking cams slide into the slot branch that in a storage bag ends. This can be a groove guide in the form of an inverted L act. The crossbar of the L forms the storage pocket. The inner locking cam has the connecting corner the user no longer reaches and presses the toggle button on the shift lock unit, then it swings back into the vertical zero position, causing the inner locking cam to move in the storage bag moves. This is also the parking position, in which it is possible to Swing the gear lever into a space-saving parallel position. The storage bag is practical on yours provided on both opposite sides with stops such that the switch cage without actuation the shift lock unit is neither pulled out nor inwards towards the switch-on position can be pushed back in.

The measures according to the invention allow a switch lock unit that is simple to manufacture and stable. At the same time, this forms a phase partition in such a way that the size for the load switch 00 only a single plate is provided as a phase partition. This leave the space available to. Tilting the new shift lock unit is a very simple operation. In the side wall is a particularly simple locking guide by the measures according to the invention. To all of this is even the assembly after the manufacture and / or the fuse change the individual parts of the power switch according to the invention easier, without tilting or special Einfädelungsbewegung.

Figur 1

eine Seitenschnittansicht des Gehäuses mit Schalthebel in Parallelstellung in der Betriebsposition, welche die Einschaltstellung ist,

Figur2

eine ähnliche Ansicht wie Figur 1, wobei jedoch der Schaltkäfig durch Betätigen des Schalthebels in die Ausschaltstellung aus dem Gehäuse herausgezogen ist,

Figur 3

die gleiche Stellung und Ansicht wie Figur 2, wobei jedoch die Schaltsperreinheit betätigt und so gekippt ist, daß der unten angebracht zu denkende innere Rastnocken in denjenigen Nutenast hinübergeschoben worden ist, der in einer Lagertasche endet,

Figur 4

eine abgebrochene und vergrößerte Position ähnlich wie Figur 3, wobei jedoch der Schaltkäfig die Parkposition erreicht hat, in welcher der Schalthebel flach auf dem Schaltkäfig aufliegt und die inneren Rastnocken sich in der Lagertasche befinden,

Figur 5

eine Position ähnlich Figur 3, wobei jedoch die Schaltsperreinheit anders betätigt, d.h. in die der Figur 3 entgegengesetzte Richtung so gekippt ist, daß der innere Rastnocken längs des anderen Nutenastes, welcher nicht mit einer Lagertasche versehen ist, sondern frei nach außen endet, nach außen oben so gleiten kann, daß man den Schaltkäfig vom Unterteil entnehmen kann,

Figur 6

eine Draufsicht auf die plattenförmige Schaltsperreinheit und

Figur 7

eine perspektivische Ansicht der Schaltsperreinheit.

Further advantages, features and possible uses of the present invention result from the following description of preferred exemplary embodiments in conjunction with the attached drawings. In these show:

Figure 1

a sectional side view of the housing with the shift lever in the parallel position in the operating position, which is the switch-on position,

Figur2

2 shows a view similar to FIG. 1, but with the switching cage being pulled out of the housing into the off position by actuating the switching lever,

Figure 3

the same position and view as Figure 2, but the shift lock unit is actuated and tilted so that the inner latching cam to be thought of below has been pushed over into the groove branch that ends in a storage pocket,

Figure 4

a broken and enlarged position similar to Figure 3, however, the shift cage has reached the parking position in which the shift lever lies flat on the shift cage and the inner locking cams are in the storage pocket,

Figure 5

a position similar to Figure 3, but with the shift lock operated differently, that is tilted in the opposite direction of Figure 3 so that the inner locking cam along the other slot branch, which is not provided with a storage pocket, but ends freely to the outside can slide so that the switch cage can be removed from the lower part,

Figure 6

a plan view of the plate-shaped shift lock unit and

Figure 7

a perspective view of the shift lock unit.

The embodiments shown here are an NH fuse switch disconnector, whose mounting plane as shown in Figures 1 to 5 perpendicular to the paper plane lies and runs through the lower horizontal edge of the housing 1, the longitudinal axis 2 in Figure 1 dash-dotted line is indicated. This is parallel to the mounting plane and perpendicular to the transverse direction 3 of the housing 1, as indicated by the cross point of two cross lines in a circle is.

The housing 1 has a lower part 4 and two side walls 5 attached to it on the outside on, each of which the front side wall is cut off, so that the viewer on the rear side wall 5 looks. This results in the shape of the housing 1 in cross section a U, as not recognizable here in the drawings, but is clearly conceivable for the person skilled in the art.

The connection area, generally designated 6, is not explained in more detail because it is for the invention not essential here.

Current busbars (not shown) engage in the contact hooks 13 in a manner known per se and are firmly pressed by the contact hooks 13 onto the fastening level of the lower part 4. The connection to the feed contacts is also not shown in these documents. because not essential to the invention. Interesting, however, are the ones arranged above the feed contacts Contact covers 19.

Separately from the housing 1, the power switch strip also has the switch cage 7 attached to it Fuse links because, according to the invention, the fuse links are also irrelevant, these are not shown in the drawing. But you can see them from the outside (in the drawings above) inwardly extending phase partition 20. In direction 9 of movement or possibility of movement of the switch cage 7 with respect to the housing 1 extend in the side wall 5 not explained guide grooves 8, in which not shown, attached to the switch cage 7 Guide webs 9 can slide to perpendicular to the pulling or sliding direction 9 Attachment level to give the switch cage 7 a guide.

The load switching strip also has a switching lever 11 which has cheeks 12 in its inner region and has a crossbar, not shown. At its opposite end of the gripper inner end are in the area 14 not specifically drawn bearing journals and in the distance (smaller Lever) pivot pin 15 arranged therefrom. A pivot pin 15 runs in each cheek 12, and in each side wall 5 there is an elongated hole 16 in the area of a station of a fuse link arranged, in which the pivot pin 15 is received, while the bearing pin (in the area 14) in an elongated second recess, not shown here, parallel to the elongated hole 16 are led.

On the inside of the switch cage 7 there are two guide tongues 10 at a distance a from one another. This distance is seen in the longitudinal direction 2 of the housing, so that that of the respective Guide tongue spanned plane is parallel to the plane of the phase partition 20. From the outside A shift lock unit 18 is inserted between these guide tongues 10, the plate shape has and is shown clearly shown in Figures 6 and 7.

The plate-shaped shift lock unit preferably produced by injection molding a solid plastic 18 is essentially rectangular in plan view according to FIG. 6 with two opposite one another longer narrow edges 21 and on the inner (lower) and outer (upper) End opposite shorter narrow edges 22. Of the longer narrow edges 21 stand in the direction of the extension of the shorter narrow edges 22 inside two opposite one another inner locking cams 23 out while in the upper end in the same direction outer locking cams 24 protrude with inclined mounting surfaces 25. The latter are on Support webs 26 attached, which result from recesses 27, which the bending the supporting webs 26 serve during the assembly and tilting of the shift lock unit 18.

In the upper, outer end region of the plate-shaped shift lock unit 18 is via a retaining tongue 28 a rocker switch 29 attached by clamping. This toggle button is by pressing one of the both directions shown by the double arrow 30 can be pivoted or tilted about a tilt axis 31.

The height H of the side wall 5 is approximately equal to the height h of the shift lock unit 18 inner locking cams 23 of the outer locking cams 24 is denoted by b in FIG. The tilt axis 31 of the shift lock unit 18 runs through the outer locking cams 24, which are each in a hole, not shown, are arranged in the side wall 32 of the switch cage 7.

The one inner locking cam 23 is in a sliding groove 33 in the side wall 5 of the housing 1 led. According to the representation of Figures 2 to 5 is at the upper outer end of the sliding groove 33 a bifurcated locking guide, generally designated 34. This forms a continuation of the sliding groove 33 and has two groove branches 35, 36. Spread like a fork the two groove branches 35 and 36 upward and outward from their connection point. The right groove branch 35 ends in a storage pocket 37. The other groove branch 36 runs freely up and outside to the shift lever-side upper edge 38 of the housing 1.

The thickness d of the plate-shaped shift lock unit 18 is somewhat smaller than the distance a between the two Guide tongues 10 from each other. Located at a distance A from the plate-shaped shift lock unit 18 on the inside of the switching cage 7 there is a bendable phase partition 20, the free, inner end carries a stop 40. This is in the outermost, the parking position of the switch cage 7 (Figure 4) with the contact cover 19 in locking engagement.

A protruding from the cheek 12 of the shift lever 11 is located in the Distance from the pivot pin 15 and protrudes laterally from the cheek 12 that at Swiveling the shift lever into its most pivoted position of the stop 40 comes from the contact cover 19 out of locking engagement.

Through the locking guide 34, a lower stop 41 and a middle one opposite Stop 42 and an outer stop 43 are formed. Between the middle (42) and the outer stop 43 of the locking guide 34 is the already mentioned storage pocket 37.

In operation, the power switch operates in the switch-on position I according to Figure 1. The phase partition 20 is also relieved and extends straight from the inside to the outside as well as the plate the shift lock device 18. The respective inner locking cam 23 is located at the lower end of the Sliding groove 33.

If the user wishes to switch off the consumer, then he grips the shift lever 11 and turns it around the trunnion in area 14 clockwise according to the illustrations here in the Switch-off position II of Figure 2. Here, the pivot pin 15 moves along the elongated hole above and outside, whereby the shift cage 7 together with the shift lock device 18 after is pulled up and outside. The inner locking cam 23 strikes at the upper end of this possibility of movement against the lower stop 41 of the locking guide 34.

If the user now wishes to bring the switch cage 7 into the park position, then he must press the toggle button 29 of the shift lock unit 18 in the direction shown in Figure 3 tilt so that the plate-shaped shift lock unit 18 rotates counterclockwise about the tilt axis 31. Thereby the inner locking cam 23 is pushed into the right groove branch 35, which with the bearing pocket 37 ends. Unlocking has now taken place and the user can use the shift lever 11 pull the switch cage 7 further upwards in the direction of the double arrow 9 until the Latch cam 23 starts against the bottom of the bearing pocket 37, whereby the switching cage 7 in its Figure 4 shown parking position III arrives. The plate-shaped shift lock unit 18 can be in the storage pocket 37 tilt back to the left into its relaxed position so that the inner locking cams 23 captured between the middle stop 42 and the outer stop 43 of the bearing pocket 37 become. The switch cage 7 can now neither be pulled out upwards nor downwards and pushed in without the shift lock unit 18 being operated.

Rather, the user can move the pivot point from the pivot pin 14 into the pivot pin 15 continue to turn the shift lever 11 counterclockwise to parking position III.

Conversely, if the user wants to leave this parking position, he can do this simply by pressing down of the switch cage in no way inside. He doesn't even succeed in doing this Shift lock unit 18 tilts into the unlocked position shown in FIG. 3. The reason is that the stop 40 on the phase partition 20 as shown in Figure 4 with the contact cover 19 is in locking engagement. The user must therefore first pivot out the shift lever 11, whereby the actuating nose 39 the bendable phase partition in the direction of the longitudinal axis 2 of the housing bends and thus the stop 40 from the contact cover 19 except Intervention brings. Now the user can push the switch cage 7 in or down, as in Figure 3 is shown.

The other movements are reversed as described for pulling out above.

Alternatively, if the user wants to replace a fuse link, then he must have the switch cage 7 remove from housing 1. For this purpose, the shift lock unit 18 is moved about the tilt axis 31 in accordance with Representation of Figure 5 tilted clockwise. The inner locking cam 23 reaches this Way in the left groove branch, the up towards the lever edge 38 of the upper Housing runs out freely. Pulling the switch cage 7 out of the housing 1 is thereby possible.

LIST OF REFERENCE NUMBERS

1

casing

2

Longitudinal axis of the housing

3

Transverse direction of the housing

4

lower part

5

sidewall

6

terminal region

7

cage

8th

guide

9

Direction / possibility of movement of the switch cage

10

guide tongues

11

gear lever

12

Wangen

13

Contact hook

14

pivot

15

pivot

16

Long hole

18

Shift lock unit

19

Contact cover

20

phase partition

21

longer narrow edge

22

shorter narrow edge

23

inner locking cam

24

outer locking cam

25

Mounting sloping surface

26

carrying web

27

recess

28

holding tongue

29

Tilt button

30

Pressure / tilting direction

31

tilt axis

32

Sidewall of the switch cage 7

33

sliding groove

34

locking guide

35

Nutenast

36

Nutenast

37

bearing pocket

38

upper edge on the lever side

39

actuating nose

40

attack

41

lower stop of the locking guide 34

42

middle stop of the locking guide 34

43

outer stop of the locking guide 34

A

Distance between the switching lock unit 19 and the phase partition 20

a

Distance of the guide tongues 10

b

Distance between the inner and outer locking cams

H

Height of the side wall

H

Height of the shift lock unit

I

on position

II

off position

III

parking position

Claims (7)

Power switch, consisting of a housing (1) with a lower part (4) and attached side walls (5) and with connections (6) for busbars, one relative to the housing (1), transverse to its longitudinal (2) and transverse axis (3) movable switching cage (7) with fuse inserts and guide bars arranged thereon and from a switching lever (11) with spaced rotary (15) and bearing journals (14), which in complementary and parallel first and second recesses (16) in the side walls (5) of the housing (1) are guided, the second recess being open to the upper edge of the housing (1) on the lever side and a bearing pocket at the opposite, inner end of the second recess for non-positive support of the bearing journal (14) on Shift lever (11) is provided and on the shift cage (7) a plate-shaped shift lock unit (18) with at least one inner locking cam (23) is arranged, which in a he sliding groove (33) is guided in the side wall (5) of the housing (1), characterized in that a) the height (H) of the side wall (5) is approximately equal to the height (h) of the shift lock unit (18), b) the shift lock unit (18) has an externally attached toggle button (29) and a further inward tilting axis (31), which is secured by an outer, at a distance (b) from the inner locking cam (23) locking cam (24) and a hole in the side wall (32) of the switch cage (7), and c) that at the outer end of the sliding groove (33) a forked locking guide (34) with stops (41 - 43) against the movement of the inner locking cam (23) in the direction of the sliding groove (33) is provided. Load switching strip according to claim 1, characterized in that on the inside of the switching cage (7) at a distance (a) greater than the thickness (d) of the plate-shaped switching block unit (18) from each other two guide tongues (10) are attached. Load switch strip according to Claim 1 or Two, characterized in that the forked locking guide (34), in continuation of the sliding groove (33), has two groove branches (35, 36) forming the fork, one of which (35) ends in a bearing pocket (37). Load switch strip according to one of Claims 1 to 3, characterized in that both slot branches (35, 36) extend at least partially in the direction outward to the upper edge (38) of the housing (1) on the shift lever side and a slot branch (36) freely outwards to the latter Surface (38) runs out. Load switch strip according to one of claims 1 to 4, characterized in that in the plate-shaped switching block unit (18) in addition to the at least one outer latching cam (24) with the formation of a supporting web (26), a recess (27) for easy bending of the supporting web (26) is appropriate. Load switch strip according to one of Claims 1 to 5, characterized in that an inner and an outer latching cam (23, 24) are fastened to two mutually opposite narrow edges (21) of the plate-shaped switching block unit (18). Load switch strip according to one of claims 1 to 6, characterized in that on the inside of the switch cage (7) in the longitudinal direction (2) of the load switch strip at a distance (A) from the two guide tongues (10), which is equal to the distance between two fuse links flexible phase partition (20) is attached, the free inner end of which carries a stop (40) which can be brought into locking engagement in the outermost, the parked position of the switching cage (7) with a cover (19) attached to the lower part (4), and that an actuating nose (39) protrudes from at least one cheek (12) of the shift lever (11) in such a way that when the shift lever (11) is pivoted, the stop (40) is brought out of locking engagement by the cover (19).

Images