DE102005012364A1 - Latch hook for a switch-disconnector - Google Patents

Abstract

On a switch-disconnector a latching hook is provided which has a T-shaped hook end. The switch-disconnector can therefore be rotated by 180 ° and used without modification.

Description

The The invention relates to a latching hook for a fuse switch disconnector.

From the DE 40 03 260 C2 the use of an L-shaped latching hook in an adapter for busbar systems is known, wherein the L-shaped hook is rotatable by 180 ° in order to adapt the adapter to different busbar distances.

The use of several hooks is from the DE 36 36 944 C2 known.

Fuse switch are partly hung on busbars. For this purpose, locking hooks are used. The busbars do not always have the same distance. There is Systems with three busbars and a center distance of 40 mm, 60 mm and more.

In In this case, the fuse switch must be firm and secure be attached to the busbars.

Technical Conditions require in fuse switch disconnectors, which mounted directly on busbars, occasionally, that feed either from above or from below.

in the The prior art are therefore L-shaped hooks provided, which are also rotatable by 180 °. Before turning around the fuse switch disconnector must therefore the individual hooks for the busbars be turned around. The fitter must be instructed accordingly the assembly instructions must show how the hooks are turned over, and thereby time is lost. Occasionally there are also fuse switch disconnectors, where internal current paths of busbar adapters complete be rebuilt. This requires even more effort, leads to yet more time lost, and the technicians have to be instructed.

It The object of the invention is to provide a solution for a switch-disconnector find that little time consuming is easy to understand and by fitters without assembly intervention and sure to be realized.

According to the invention is a Latch hook for a fuse switch disconnector provided characterized is that he is at least a T-shaped Hook end has. For example, if two of these locking hooks used in a fuse switch, so can in the an orientation of the circuit breaker a support of the one Side of the T-shaped hook element on the busbars, while in a simple inversion of the fuse switch disconnector by 180 ° a rest on the other Side of the T-shaped hook element can be done, the hook function in each case by one of the two Halves of the transverse leg of the T is provided.

According to one preferred embodiment the latch hook then also slidable to the switch-disconnector adjusted if the distance of the busbars is changed. The latching hook therefore has a head that is suitable behind an inner metal rail of a fuse switch disconnector along to slide and two T-shaped hook ends, which are suitable, the outer busbars to embrace. The inner metal rail is usually in fuse load disconnect scarf diesters for Making an electrical connection with the busbars and the fuses used, this being done in direct contact can or over a compensation piece.

The T-shaped Hook ends are preferably perpendicular to the head away. At a appropriate installation of the latching hook is thus through the T-shape in two directions an L-shape available, namely in each case by half of the transverse leg of T.

The Hook ends should be able to hold an insulating cap with it shorts between adjacent outer busbars or other potential leaders Parts are prevented. Also in its dimensions must the latching hook should be designed so that possibly closely adjacent Busbars should not be short-circuited.

The The invention also relates to a fuse switch disconnector with a such latching hook.

A preferred embodiment The invention will now be described below with reference to the drawing described. It shows:

1 in an exploded perspective view of the individual components of a fuse switch disconnector according to the invention,

2 the individual components of the fuse switch disconnector according to the invention in the assembled state in cross section, seen from the side,

3 the fuse switch disconnectors with the latching hooks according to the invention in a position in which it is suitable for a conductor rail spacing of 40 mm, and

4 the fuse switch disconnectors with latching hook according to the invention in a position in which it is suitable for a busbar spacing of 60 mm.

The fuse switch disconnector according to the invention has inner busbars 10 on, which are substantially perpendicular to the outer busbars to which the switch-disconnector is to be mounted. The inner busbars have terminal contacts (Lyra) 12 for fixing fuses on (shown schematically) as well as sections 14 , which are suitable with locking hooks 16 co. The respective catch hook 16 has a head 18 and two perpendicularly projecting from this head T-shaped hook ends 20 on. The head 18 is for holding at least one locking screw 22 suitable. The section 14 The inner busbars are so wide that the latching hook 16 him with the two hook ends 20 and he is so long that the latching hook 16 with the head 18 along the section is displaceable, that can slide along this section.

A housing 24 the switch-disconnector has an opening 26 on.

In the assembled state, the in 2 is shown, the section protrudes 14 the busbar in this opening 26 into it. The opening 26 is designed as long as the section here 14 the inner busbar 10 so that the latching hook 16 is also displaceable in the assembled state between two positions, between one in 2 shown upper position and a lower position. In the respective position of the locking hook 16 from a set screw on the section 14 held the inner busbar. This is the opening 26 not in the latch hook 16 occupied portion of an insulating piece 28 locked.

To make the electrical contact with an in 2 sectioned busbar 30 To create is an H-shaped compensation piece 32 provided, which of the latch hook 16 is held and can be moved together with the latching hook. For this purpose, the H-shaped compensating piece 32 on each leg of the H one step 34 so that the equalizer is basically a H made of copper, on which a slightly smaller H made of copper sits. At these stages can now before assembly, the T-shape of the latching hook 16 attack. Im in 2 When assembled, the steps engage the housing 24 to hold the shim in the housing. How out 2 can be seen, engages in the suspended state of the circuit breaker, the T-shape of the hook end of the latching hook 16 behind the busbar 30 , To fulfill built-in requirements may be on the T-shape of the hook end 20 an insulating cap 36 made of plastic.

The fuse switch disconnector according to the invention looks in the assembled state of the rear, ie of the outer busbar 30 facing side, off, like it is in 3 or in 4 is shown. The situation in 3 shows how the locking hooks must stand so that the fuse switch disconnector is suitable for a distance of the outer busbars of 40 mm.

Of the Switch-disconnector is now easy and safe for various busbar systems convertible. An example for a conversion from 40 mm to 60 mm busbar system is in

4 shown. To rebuild the switch-disconnector, the insulating piece must 28 are removed, then the clamping screw 22 solved and thus the latching hook of the section 14 the inner busbar 10 solved. The lower latching hook is starting from 3 moved down accordingly, and the upper latch hook offset upwards. The middle latching hook must not be offset due to the design.

By providing the T-shape for the latching hook (as well as for the insulating cap 36 ) is both in the in 3 shown situation for a busbar spacing of 40 mm and 60 mm (in 4 ) or larger, it is possible to rotate the entire switch-disconnector by 180 °. It should be noted that in normal orientation of the circuit breaker of the latch hook with its hook end 20 a support surface 38 on the busbars 30 (please refer 2 ) having. The distance between two such bearing surfaces 38 that also in 3 are recognizable, but is identical to the distance, the upper bearing surfaces 40 have so that with the same distance at the SLT the feed side are changed by rotation of 180 °. In this position, the latching hook lies with the bearing surfaces 40 on the busbars.

The The invention therefore provides a special flexibility: the switch-disconnector can only be made in one variant and can be relatively local be easily rebuilt to keep it at a changed busbar distance adapt. However, the switch-disconnector can also be easily rotated by 180 °.

10

inner conductor rail

12

clamp

14

section

16

latch hook

18

head

20

hook ends

22

locking screw

24

casing

26

opening

28

insulating

30

outer busbar

32

Ausgleichsstück

34

step

36

insulating

38 40

support surfaces

Claims (5)

Latch hook ( 16 ) for a switch-disconnector, characterized by at least one T-shaped hook end ( 20 ). Latch hook according to claim 1, with a head ( 18 ), which is suitable behind an inner metal rail ( 10 ) of a load-break switch, and with two T-shaped hook ends ( 20 ), which are suitable, the metal rail ( 10 ) ( 2 ). Latch hook according to claim 2, characterized in that the T-shaped hook ends ( 20 ) stand vertically away from the head. Latch hook according to claim 2 or 3, characterized in that the hook ends ( 20 ) are suitable, together an insulating cap ( 36 ) to keep. Switch-disconnector with at least one latching hook after one of the claims 1 to 4.