DE102005007225A1 - Cover for safety load-break switch has adjustable handle which is adjustable between two latched positions whereby handle has two limbs which are guided to movement between latched positions in captive nut - Google Patents

Abstract

The cover (10) has an adjustable handle (12) which is adjustable between two latched positions. The handle has two limbs (14) which are guided to the movement between the latched positions in the captive nut (22,22'). The cover has lateral latched holes (28,28',30,30') for latched positions. An independent claim is also included for electrical switch e.g. safety load-break switch.

Description

The The present invention relates to a cover for a fuse switch disconnector, especially for NH fuses of small size, eg. B. the Size 00 or 000th

Fuse switch disconnectors Take these NH fuses in a movable lid. at If the cover is closed, the fuses contact internal busbars through appropriate blade contacts.

Functionally, it happens that the lid is opened or closed (for example, to replace the fuses). Due to the contacting of the fuse via the contact blades act on the fuses and thus the lid large opening and closing forces, ie the fuse is quite firmly held in the lid ( DE 101 09 091 A1 ).

At the State of the art, the operator, especially for small sizes, due the construction of the handle bad use the lid. In the prior art, in particular in fuse-switch-disconnectors small sizes only a very small handle formed in the lid. Reason for this is that In switchgear usually quite little space is available.

It The object of the invention is a cover of a fuse switch-disconnector the above kind of customer-friendly, so that the Lid open easier and safer can be.

According to the invention is a Cover for a fuse switch disconnector with the features of claim 1 provided.

By the provision of an adjustable handle, the lid can be made that he will save space in one of the gripping positions is and yet a handle function is available, but at the same time also for Applications can be used where more space in the substation to disposal stands, the handle can then be adjusted so that the handle function is ergonomic and safer.

According to the invention Handle adjustable at least in two locking positions. So the handle adjustable, it can move between two such locking positions be guided captive in a groove. Therefor the handle has two legs, each of which can be guided in grooves, the grooves in the side walls the cover of the fuse switch disconnectors are provided. The Grooves can straight or at an angle to the walls run the cover of the fuse switch disconnector, so that the Hold the handle in the locked position just above the lid and in the other detent position protrudes from the lid.

The in the grooves held legs preferably each have a locking element for engaging in an associated Detent hole in the cover of the fuse switch disconnector and a Spring element on. The spring element is compressible to the Push locking element out of its detent hole. The spring element can by a recess between two locking pins on each leg be formed of the handle, wherein the recess be thereby extended can be that two fingers are provided, which are away from the handle stand. A space between the fingers then prolongs the recess. This spring element as a whole can be compressed by fingers pressed together become. This has the advantage of having a tool on these fingers can attack, and then compress the spring element the locking pin from the associated engaging holes crowded. In this situation, the grip between the locking positions is adjustable, d. H. the legs are moved in the grooves until the second Locking position is reached, and then the pressure on the fingers finished, the spring element springs back and the locking pin urged in the new detent positions in the associated detent hole.

Prefers is the spring element or the whole handle made of plastic.

The Invention will become apparent from the following description of a preferred Embodiment continues clarifies which is given with reference to the drawing. In the drawing shows:

1 an exploded perspective view of a lid of a fuse switch disconnector with the adjustable handle according to the invention;

2 an enlarged section 1 ;

3 a side view of a lid according to the invention with the adjustable handle in a first detent position; and

4 a side view of the lid according to the invention with the adjustable handle in a second detent position.

1 shows a lid 10 for a fuse switch-disconnector, which, apart from the design of the handle, is formed in a conventional manner. Shown is also the handle 12 , which two legs 14 which has a footbridge 16 stand away. The thigh 14 has at its end two locking pins 18 on. Behind the locking pin 18 points each thigh 14 a beveled flank 20 on, with the respective leg 14 can be guided in a groove. This is the side of the lid 10 at its upper portion an oblique groove 22 provided, ie a groove with triangular cross-section and one opposite of this groove 22 running groove 22 ' , The grooves 22 and 22 ' extend at an angle of 45 ° relative to an upper edge 23 or a lower edge 24 of the lid 10 , what a 1 is drawn. The grooves meet accordingly 22 and 22 ' at an angle of 45 ° on an upper side wall 25 of the lid 10 , which also in 1 is drawn, with the two grooves 22 and 22 ' not reach the upper side wall, but they end in a bevelled edge 26 the housing of the lid 10 , At the bottom of the grooves 22 and 22 ' or their extension are each two detent holes 28 and 28 ' such as 30 and 30 '. In this detent holes, the locking pin 18 intervention.

3 shows the situation in which the locking pin 18 in the detent holes 28 and 28 ' engage, ie in which the handle is in an upper detent position, and 4 shows the situation in which the locking pin 18 in the detent holes 30 and 30 ' engage, ie the handle is in the lower detent position. To move the handle from one locking position to the other, the locking pin must 18 from the respective detent holes 28 and 28 ' respectively. 30 and 30 ' be pushed out so the handle with its flank 20 in the associated groove 22 is displaceable. For this pushing out of the locking pin 18 is a recess as a spring element 32 in the thigh 14 intended. This recess is lengthened by having two fingers 34 are provided, which are the leg 14 extend downwards, reducing the gap 32 is also enlarged downwards. Press your fingers 34 Now together, gives the thigh 14 because of the recess 32 resiliently, and the locking pin 18 become out of the respective detent hole 28 . 28 ' respectively. 30 . 30 ' crowded. The thigh 14 is then in the grooves 22 and 22 ' displaceable, from one rest position to the other, ie he can either from the in 3 shown position in the 4 shown position or vice versa.

Will the lid of the invention 10 produced with such a handle, this has the following advantages: Before installing the fuse switch disconnectors in a switchgear the handle is adjusted if necessary. In the event that there is little space in the switchgear, the handle will move to the position shown in 4 spent in the the locking pin 18 in the detent holes 30 and 30 ' intervene, taking the fingers 34 in an associated recess 36 engage in the side wall. The handle 12 is slightly or not over the top 25 of the lid, so that a handle function is available for the lid, in a switchgear in which there is little room for fuse switch disconnectors.

If the fuse is to be installed in a switchgear in which more space is available, the handle is in the in 3 shown position spent in the locking pin 18 in the detent holes 28 and 28 ' intervention. In this position is the handle 12 clearly above the upper side 25 the lid, it is easier and safer to touch. This allows the lid to be opened more easily and safely (glove operation).

The fact that the grooves 22 and 22 ' at an angle of 45 ° to the edges 23 and 24 or to the surface 25 run, has the advantage that as in 3 and 4 seen in both the lower detent position and in the upper detent position of the handle 12 at an angle of 45 ° (with a straight leg 14 ), resulting in an optimum lever for engaging the lid of the fuse switch disconnector. It is possible, however, the grooves 22 and 22 ' also at a different angle. The grooves can also be listed differently than triangular groove, as long as they only hold the thigh 14 of the handle 12 enable.

Of the Fuse switch disconnectors shown are for size 00 or 000 NH fuses. Especially with such fuses, there are conventional Fuse switch disconnectors Space problems. So that even in lack of space a handle can be provided, is the Handle with these fuse switch disconnectors height adjustable.

10

cover

12

Handle

14

leg

16

web

18

latching pin

20

flank

22 22 '

oblique grooves

23

upper edge

24

lower edge

25

upper Side wall

26

bevelled edge

28 28 '

detent holes

30 30 '

detent holes

32

recess

34

finger

Claims (9)

Cover ( 10 ) for a fuse switch disconnector, characterized by an adjustable handle ( 12 ). Lid according to claim 1, characterized in that the handle between at least two locking positions ( 3 ; 4 ) is adjustable. Lid according to claim 2, characterized in that the handle ( 12 ) two legs ( 14 ) which, for movement between the latching positions, is captive in a groove (Fig. 22 . 22 ' ) are guided. Lid according to claim 2 or 3, characterized in that - the lid ( 10 ) lateral detent holes ( 28 . 28 '; 30 . 30 ' ) for locking positions; and - that the handle has two legs ( 14 ), wherein on each leg ( 14 ) at least one latching element ( 18 ) for engaging in an associated detent hole ( 28 . 28 '; 30 . 30 ' ) and a spring element ( 32 ) is provided which is compressible to the latching element ( 18 ) from a detent hole ( 28 . 28 '; 30 . 30 ' ) to urge. Lid according to claim 4, characterized in that the spring element by a recess ( 32 ) between two locking pins ( 18 ) on each leg ( 14 ) of the handle ( 12 ) is trained. Lid according to claim 5, characterized in that through the space between two fingers ( 34 ) the recess ( 32 ) is extended, wherein the spring element by compression of the fingers ( 34 ) as a whole is squeezable. Lid according to one of the preceding claims, characterized in that the handle ( 12 ) is made of plastic. Lid according to one of the preceding claims, characterized characterized in that it is for receiving a NH fuse size 00 or 000 suitable is. Electric switch, in particular fuse switch disconnector with a lid and held on the lid fuse inserts with contact blades, the contact blades contact counter contacts when the cover is closed, the connected to busbars, characterized in that the lid according to one of the claims 1 to 8 is formed.