EP2860746B1 - Assembly of two lids of circuit breakers - Google Patents

Description

The invention relates to an arrangement of two covers of circuit breakers, in particular of circuit breakers and / or fuse switch disconnectors, wherein the respective circuit breaker comprises a housing and a pivotally mounted in the housing lid for receiving at least one insert in the lid, wherein with the lid closed contacts of the insert and this associated mating contacts are closed and open with the lid open, wherein the lids are arranged side by side, the pivot axes of the lid are identical and the lid are firmly connected to each other, wherein the respective cover has a handle for actuating the cover in the region of the end remote from the pivot axis, wherein the handles are arranged at the same distance from the pivot axis of the cover.

In disconnectors differently shaped inserts can be used, in particular inserts that are designed as a separating blade or fuse link. When switching under load, it is sufficient to use a separating knife. If, in addition, the respective phase is to be protected and switched under load, fuse-switch-disconnectors and thus fuse-links are used.

Fuse switch disconnectors are well known in the art. They have a housing and a pivotally mounted in the housing lid. The lid serves to accommodate at least one fuse link. When the lid is closed contacts of the fuse link and this associated mating contacts are closed and with the lid open, the contacts of the fuse link and the associated mating contacts are open. The mating contacts are mounted in the housing. The respective mating contact is assigned in particular a busbar or a terminal.

Such fuse switch disconnectors are usually designed for three-pole switching, thus taking on three fuse links, in particular NH fuse-links. In particular, in the arrangement of fuse switch disconnectors to busbar arrangements, the fuse switch disconnectors and thus the lid are arranged side by side. By pivoting the lid of the fuse switch disconnectors, the fuse switch disconnectors can be switched independently.

A three-pole fuse switch is for example in the EP 1 251 538 A2 and the DE 10 2006 049 812 A1 described.

There are also disconnectors, in particular switch disconnector with disconnector or fuse switch disconnector fuse with known, which serve the single-pole switching.

An arrangement of two covers of disconnectors with the features of the type mentioned above has become known from practice by the Jean Müller GmbH Electrotechnical Factory, D-65343 Eltville. In this arrangement, the one lid serves to receive three fuse links and is thus designed as a fuse switch-disconnector, while the other cover serves to receive a disconnecting blade for switching a neutral, so it is designed as a circuit breaker. These covers have wall sections on the sides facing each other. These are provided in the region of the pivot axes of the lid with recesses for receiving a spacer element inserted in this, that is connected in a latching manner with the wall sections. For connecting the two covers, also in the region of their handles, a U-shaped connecting element is provided which has a U-shaped cross-section and, the handles cross-over, is inserted on this. The length of the connecting element corresponds substantially to the total length of the two handles. The handles are connected via plate-shaped spacers with a cover housing. The connecting element has two adjacent notches, wherein adjacent spacer elements of the lid engage with mounted connecting element in the indentations, so that also in the region of the connecting element, the spacer elements and thus the lid are positioned spaced. - This arrangement of the two lids is structurally complicated and it takes a considerable effort to connect the two lids.

An arrangement of two lids with the features of the aforementioned type has also become known from practice by the EFEN GmbH, D-65344 Eltville. In this arrangement, the one lid serves to accommodate three fuse links and the other cover of the recording of a cutting knife. Connected, the two covers by means of a spacer plate arranged between these, which has projections on both sides, which engage in recesses of the adjacent wall sections of the lid, whereby a positive connection between the lids is ensured during pivoting. This spacer plate also has locking pins on both sides, which are plugged in mounted lids in holes adjacent wall sections of the lid and engage behind this latching. The spacer plate extends substantially over the entire length of the lid between the pivot axis and the handle. - This arrangement is designed structurally complicated because of the separately provided spacer plate and requires a relatively high installation effort for firm connection of the two lids. Apart from this, the material cost for producing the spacer plate is quite large, because this extends over the entire length of the respective lid.

An arrangement of two covers according to the features of the aforementioned type has also become known from practice by the M. Schneider switching devices construction and electrical installations GmbH, A-1160 Vienna. In this arrangement, two covers are connected to each other, each serving to accommodate a fuse link, thus serve the two-pole switching as a fuse switch disconnectors. According to the arrangement of the EFEN GmbH there is provided a spacer plate with Rastierzapfen and additionally a Rastierzapfen which, regardless of the distance plate, the two covers in the area plate-shaped spacer elements between the respective cover housing and this lid housing associated handle. This arrangement has the aforementioned disadvantages.

An arrangement of two covers of disconnectors with the features of the type mentioned, and according to the preamble of claim 1, is further from the EP 1 306 867 A1 known. At this

Arrangement, the fixed connection of the lid by means of a threaded pin, which is bolted with two caps, which pass through a recess in the lid connected tabs, the handles enforce.

Object of the present invention is to develop an arrangement of the type mentioned so that these structurally simple design and ease of installation forces that are effective between the two covers, in particular the two handles when switching the two fuse switch disconnectors can transfer.

The object is achieved in the arrangement of the type mentioned above in that the handles on the facing sides have recordings, with a pin is inserted into the recordings, perpendicular to the longitudinal axis of the pin, kept free of play, the respective recording as a blind hole in the handle is formed, wherein the blind hole is arranged parallel to the pivot axis of the lid.

The pen has the task to transmit forces that are effective between the two covers, in particular the two handles when switching the two circuit breakers. By the play-free recording a relative displacement of the lid is prevented or substantially minimized about the pivot axis. This ensures that the two lids, when introducing a different force in the lid for pivoting the lid, can not move relative to each other.

In the arrangement according to the invention thus form the lid of the two disconnectors a functional unit, to the effect that when operating a lid of the other cover is synchronously mitbetätigt. Both lids pivot about the same pivot axis.

In the arrangement according to the invention thus the switching operations of the two circuit breaker when opening or closing the lid are matched. This means, with an identical arrangement of the contacts and mating contacts of the respective use of the two circuit breakers that a synchronous switching of the inserts is possible, possibly with leading or lagging switching an insert, in particular a separating knife, when mating contacts are not arranged identically.

It is especially envisaged that one circuit breaker is three-pole and the other disconnector is unipolar. By pressing the cover unit formed from the two lids thus a four-pole switching the arrangement of the two circuit breakers is possible.

The field of application of the present invention is, for example, the protection of three phases R, S, T by means of a three-pole fuse switch-disconnector and the additional protection of a neutral conductor by means of a further, thus single-phase switch-disconnector. It is also possible to combine two single-phase switch-disconnectors or two three-phase switch-disconnectors, in particular two three-phase fuse switch disconnectors.

In principle, any circuit breaker, in particular the same size, are coupled together in the sense of the invention.

Preferably, the inserts of the arrangement, at the same distance from the pivot axis of the lid, arranged side by side. Consequently, the inserts together with the lids forming the lid assembly move synchronously when the lids are pivoted.

Structurally particularly easy, the lid can be firmly connected to each other when the lid on the facing sides wall sections, in the area of which the lid are firmly connected. The formation of the lid, with the wall sections in the mutually facing sides of the lid, also allows a fairly close arrangement of the lid to each other and an advantageous design of the lid in the connecting region. In particular, it is provided that the wall sections are arranged parallel to each other and perpendicular to the pivot axis of the lid.

A particularly firm connection of the two covers is ensured if the wall sections are firmly connected to each other in several areas, in particular in two areas. This results in a stable connection of the two lids, which in particular can absorb forces that are transmitted upon actuation of only one lid of the lid assembly between the wall portions of the lid.

A particularly uniform distribution of the forces acting between the two covers, in particular when the actuating force is introduced only via a cover in the cover assembly, results when the wall sections in a first region which is adjacent to the pivot axis of the lid, and in a second region, which is arranged in the region of an end facing away from the pivot axis of the wall sections, are fixedly connected to each other.

Structurally particularly simple can be accomplished the connection of the two covers or the respective wall portions of the lid when the respective wall portion has at least one through hole, wherein through holes of the wall sections are aligned, and a connecting element passes through these through holes.

In principle, each connecting element that passes through the associated through hole is suitable for connecting the wall sections of the housings together. However, it is considered to be particularly advantageous, in particular under the aspect of mounting the connecting element, when the connecting element is designed as a latching element. Particularly simple, such a latching connection can be achieved when a part of the locking element is inserted from one side through the mutually aligned through holes of the two juxtaposed wall portions of the housing and the other part of the locking element is plugged into the inserted end of the first-mentioned part of the Rastelelements to like that Locking connection of the two parts of the locking element to form the locking element to achieve.

In this context, it is considered to be particularly advantageous if the locking element in its mounting position biases the two wall sections against each other and thus firmly connects the two covers together.

It is considered to be particularly advantageous if the locking element consists of plastic.

It is expedient if the connecting element passes through an arranged between the wall sections disc. This disc ensures the arrangement of the lid and thus the wall sections of the lid at a defined distance from each other. The disc is designed in particular as centering. This engages centering in at least one of the wall sections. As a result of this radial arrangement of the centering disk with respect to the wall sections, a positive connection between the centering disk and the at least one wall section is ensured, so that the assembly of the arrangement is simplified. The disc is in particular annular. In particular, it has the function of a spacer.

Since the handles of the lids are arranged at the same distance from the pivot axis of the lids, the advantage is that the handles constitute a functional unit, whereby one handle is arranged adjacent to the other handle, so that one operator randomly grips the one handle or the other Handle or with one hand both handles can be used to operate the lid. When pivoting the lid of the circuit breaker perform both handles the same pivotal movement with respect to the pivot axis of the lid.

During the connecting elements which connect the wall sections of the cover, primarily has the task of firmly connecting the wall sections or lid together, the pen is primarily the task to prevent a relative pivoting movement of the two lids when pivoting the lid about its pivot axis. Preferably, the depth of the mutually corresponding blind holes of the lid is adjusted with respect to the axial extent of the pin, such that an axially largely non-displaceable mounting of the pin is ensured in the lids. The pin which is inserted in the receptacles is, in particular, a cylindrical pin. This cylinder pin is thus a very simple, inexpensive component. The pin is made of metal in particular.

In principle, metal or plastic is considered as the preferred material for the connecting element or the pin.

Further features of the invention are set forth in the subclaims, the description of the drawing and the drawing itself, wherein it is noted that all individual features and all combinations of individual features are essential to the invention.

Fig. 1

eine Anordnung miteinander verbundener zweier Deckel von zwei Trennschaltern, veranschaulicht in einer räumlichen Darstellung, schräg von oben auf die Oberseite der Deckel gesehen,

Fig. 2

eine räumliche Ansicht der Deckelanordnung gemäß Fig. 1, schräg von unten gesehen,

Fig. 3

die Deckelanordnung gemäß der Fig. 1 und 2 in einer Draufsicht (Ansicht III in Fig. 4),

Fig. 4

eine Ansicht gemäß Pfeil IV in Fig. 3,

Fig. 5

eine Ansicht gemäß Pfeil V in Fig. 4,

Fig. 6

eine Ansicht gemäß Pfeil VI in Fig. 4,

Fig. 7

eine Ansicht gemäß Pfeil VII in Fig. 4,

Fig. 8

einen Schnitt durch die Anordnung der beiden Deckel gemäß der Linie VIII-VIII in Fig. 3,

Fig. 9

einen Schnitt durch die aus den beiden Deckeln gebildete Deckelanordnung gemäß der Linie IX-IX in Fig. 7,

Fig. 10

die Anordnung gemäß Fig. 7 in einer Explosionsdarstellung,

Fig. 11

ein als Rastelement ausgebildetes Verbindungselement in einer Unteransicht (Ansicht 11 gemäß Fig. 12) und

Fig. 12

das Rastelement in einer Ansicht XII in Fig. 11.

In the drawing, the invention is illustrated by means of an embodiment, without being limited thereto. It shows:

Fig. 1

an arrangement of interconnected two lids of two circuit breakers, illustrated in a three-dimensional representation, viewed obliquely from above on top of the lids,

Fig. 2

a spatial view of the lid assembly according to Fig. 1 seen obliquely from below,

Fig. 3

the lid assembly according to the Fig. 1 and 2 in a plan view (view III in Fig. 4 )

Fig. 4

a view according to arrow IV in Fig. 3 .

Fig. 5

a view according to arrow V in Fig. 4 .

Fig. 6

a view according to arrow VI in Fig. 4 .

Fig. 7

a view according to arrow VII in Fig. 4 .

Fig. 8

a section through the arrangement of the two covers according to the line VIII-VIII in Fig. 3 .

Fig. 9

a section through the lid assembly formed from the two covers according to the line IX-IX in Fig. 7 .

Fig. 10

the arrangement according to Fig. 7 in an exploded view,

Fig. 11

a connecting element formed as a latching element in a bottom view (view 11 according to FIG Fig. 12 ) and

Fig. 12

the locking element in a view XII in Fig. 11 ,

The invention finds application in an arrangement of two juxtaposed disconnect switch, one of the circuit breaker is designed as a fuse switch disconnectors and the recording serves three fuse links, while the other disconnector is designed as a circuit breaker and serves to receive a trained as a separating knife insert. The fuse switch-disconnector is thus designed with three poles. It has a housing and a pivotally mounted in this lid 7. The cover is used to hold the three fuse links, which are designed as low-voltage high-performance fuse links (NH fuse links). In a known manner, with the lid 7 closed, contacts of the fuse link and associated mating contacts, which are mounted in the housing, closed, and these contacts are open with the lid 7 open.

In addition to the fuse switch-disconnector, the other switch-disconnector is arranged, which is designed as a single-pole device. This circuit breaker has a housing and a pivotally mounted in the housing cover 9. Because of the unipolarity of the lid 9 serves to accommodate the single cutting knife. In a known manner, according to the described for three-pole fuse switch disconnector, 9 contacts this disconnector and associated mating contacts, which are mounted in the housing of the unipolar switch-disconnector are closed with the lid closed and with the lid open 9, these contacts are open.

The circuit breakers are designed to be substantially identical, substantially to the difference that one fuse switch disconnector for the three phases has the components for the three phases or three fuse links, therefore about three times as wide as the other circuit breaker for the neutral conductor with the cutter ,

• Der jeweilige Deckel 7 bzw. 9 weist im Bereich eines Endes zwei plattenförmige Lageransätze 10 und 11 auf, die Aufnahmen 12 bilden, wobei diese vier Aufnahmen 12 mit nicht veranschaulichten, komplementären Aufnahmen der Gehäuse zusammenwirken, womit die Aufnahmen 12 die gemeinsame Schwenkachse 13 der Deckel 7 und 9 in den Gehäusen bilden.

The concrete structure of the arrangement 1 of the two covers 7 and 9 is as follows:

• The respective cover 7 and 9 has in the region of one end two plate-shaped bearing lugs 10 and 11, which form receptacles 12, these four receptacles 12 interact with not illustrated, complementary receptacles of the housing, whereby the receptacles 12, the common pivot axis 13 of the lid 7 and 9 form in the housings.

The lid 7 has three identically designed receptacles 14 for receiving and holding three non-illustrated NH fuse-links. Accordingly, the lid 9 is provided with a receptacle 14 for a cutting knife. All inserts are arranged at the same distance from the pivot axis 13 of the cover 7, 9. The respective cover 7 or 9 has in the region of its end remote from the pivot axis 13 a handle 15, 16 for actuating the Cover 7, 9 on. The handles 15, 16 are arranged at the same distance from the pivot axis 13 of the cover 7, 9. The respective handle is cylindrical and the ends of the respective handle 15 and 16 are connected via parallel arranged and perpendicular to the handle axis positioned plate-shaped spacers 27 with a cover housing 28 that the receptacles 14 has.

The lid 7 and the lid 9 are formed as a plastic injection molded part.

Based on the longitudinal extension of the longitudinal axis 13, the cover 7 or the cover 9 in each case has two outer, parallel wall sections 17. These are arranged perpendicular to the pivot axis 13. In the area of the two immediately adjacent wall sections 17 of cover 7 and cover 9, cover 7 and cover 9 are firmly connected to one another. This fixed connection takes place in two areas, namely in a first area 18, which is arranged adjacent to the pivot axis 13 of the covers 7, 9, and in a second area 19, which is arranged in the region of an end of these two wall sections 17 facing away from the pivot axis 13 , In the respective region 18 or 19, the respective wall section 17 of cover 7 or cover 9 has a through hole 20, furthermore the wall section 17 of the cover 7 on the side facing the other cover 9 has a cylindrically recessed region 21 concentric with the through hole 20. The through holes 20 of the two wall sections 17 in the first region 18 on the one hand and in the second region 19 on the other hand, are aligned with each other, so that through these two, each aligned through holes 20, a connecting element 22 can be penetrated. This in each case two through holes passing through connecting element 22 is formed as a latching element, specifically as a latching rivet, as sold by the company tb electro sales GmbH, Robert-Bosch-Straße 16, D-64823 Gross-Umstadt. Such a rivet is made of plastic and has two molded parts which are inserted from opposite sides through the corresponding through holes 20 and snap. This is in addition between the two wall sections 17, in the region of which the connection of the two covers 7, 9, based on the respective connecting element 22, an annular disc 23 is arranged, which passes through the connecting element 22, wherein the annular disc 23 engages centering in the recessed area 21.

The two molded parts, which are connected to each other, are identical. The molding is in the FIGS. 11 and 12 illustrated. The molded part 29 has a plate portion 30 and two perpendicular to this arranged in cross section circular sector-shaped pins 31, which are provided in the region of their flat pin surfaces with locking projections 32. The respective pin 31 extends approximately over a quarter circle, wherein between the two pins 31 here in each case a quarter circle remains free. By arranging two pins 31 with the locking projections 32 facing each other in a twisted arrangement of the two mold parts 29 by a quarter circle, the two mold parts 29 can be put together, the two pins 31 of a molding 29 in the free space between the two pins 31 of reach other molding 29 and snap over the locking projections 32 of the pins 31, the two mold parts 29. When inserting the pins 31 through the wall sections 17, the fixed connection of the covers 7, 9 in the area of these wall sections 17 thus takes place.

By attaching the two mold parts 29 having connecting elements 22, in particular in cooperation with the annular discs 23, a firm connection between the two covers 7, 9 is created, the two covers 7, 9 are close together, possibly with a small gap due to Arrangement of the annular discs 23.

In order to give the arrangement of the two covers 7, 9, in particular in the region of the two handles 15 and 16, a particular stability, the handles 15, 16 are provided on the mutually facing sides with receptacles 24 which are formed as a blind hole. The mutually facing receptacles 24 of the lid 7 and cover 9 have the same axis 25 which is parallel to the pivot axis 13 is. In the two receptacles 24, a pin 26, which is designed as a metallic cylinder pin, inserted perpendicular to the longitudinal axis of the pin 26 without play. The length of the pin 26 is dimensioned so that it is slightly shorter than the distance between the bottoms of the blind holes in interconnected lids 7 and 9, from each other. The pin 26 ensures a rigid connection of the cover 7, 9 in the region of the handles 15, 16. Thus, even when only one lid, in particular the small lid 9, a switching force when pivoting the arrangement of the two covers 7, 9 are generated safely , both when switching on and when switching off the circuit breaker. The axis 25 preferably coincides with the longitudinal axis of the respective handle 15, 16.

The one fuse switch-disconnector is used in particular to hedge the electrical phases R, S, T, the other disconnector 3 of the additional protection of a neutral.

LIST OF REFERENCE NUMBERS

1

arrangement

7

cover

9

cover

10

bearing projection

11

bearing projection

12

admission

13

swivel axis

14

admission

15

Handle

16

Handle

17

wall section

18

first area

19

second area

20

Through Hole

21

recessed area

22

connecting element

23

washer

24

admission

25

axis

26

pen

27

spacer

28

cover housing

29

molding

30

plate section

31

pen

32

latching projections

Claims (14)

1. Arrangement (1) of two covers (7, 9) of disconnecting switches, in particular of switch disconnectors and/or fused switch disconnectors, wherein the respective disconnecting switch has a housing and a cover (7, 9) which is pivotably mounted in the housing, for receiving at least one insert in the cover (7, 9), wherein, when the cover (7, 9) is closed, contacts of the insert and mating contacts which are associated with the said contacts are closed and, when the cover (7, 9) is open, the said contacts and mating contacts are open, wherein the covers (7, 9) are arranged next to one another, the pivot axes (13) of the covers (7, 9) are identical, and the covers (7, 9) are fixedly connected to one another, wherein the respective cover (7, 9) has a grip (15, 16) for operating the cover (7, 9) in the region of that end of the said respective cover which is averted from the pivot axis (13), wherein the grips (15, 16) are arranged at the same distance from the pivot axis (13) of the covers (7, 9), wherein the grips (15, 16) have receptacles (24) on the sides which face one another, characterized in that a pin (26) is inserted into the receptacles (24) perpendicular to the longitudinal axis of the pin (26) in a manner held without play, wherein the respective receptacle (24) is in the form of a blind hole in the grip (15, 16), wherein the longitudinal axis of the receptacle (24) is arranged parallel to the pivot axis (13) of the covers (7, 9).
2. Arrangement according to Claim 1, characterized in that the pin (26) is in the form of a cylindrical pin (26).
3. Arrangement according to Claim 1 or 2, characterized in that the connecting element (22) or the pin (26) is composed of plastic or metal.
4. Arrangement according to one of Claims 1 to 3, characterized in that the respective grip (15, 16) is cylindrical.
5. Arrangement according to one of Claims 1 to 4, characterized in that one disconnecting switch is a three-pole fused switch disconnector and the other disconnecting switch is a single-pole switch disconnector for a neutral conductor.
6. Arrangement according to one of Claims 1 to 5, characterized in that the inserts of the arrangement (1) are arranged next to one another at the same distance from the pivot axis (13) of the covers (7, 9).
7. Arrangement according to one of Claims 1 to 6, characterized in that the covers (7, 9) have wall sections (17) on the mutually facing sides, the covers (7, 9) being fixedly connected to one another in the region of the said wall sections.
8. Arrangement according to Claim 7, characterized in that the wall sections (17) are arranged parallel to one another and perpendicular to the pivot axis (13) of the covers (7, 9).
9. Arrangement according to Claim 7 or 8, characterized in that the wall sections (17) are fixedly connected to one another in several regions, in particular in two regions (18, 19).
10. Arrangement according to Claim 9, characterized in that the wall sections (17) are fixedly connected to one another in a first region (18), which is arranged adjacent to the pivot axis (13) of the covers (7, 9), and in a second region (19), which is arranged in the region of one of the ends of the wall sections (17), which end is averted from the pivot axis (13).
11. Arrangement according to one of Claims 1 to 10, characterized in that the respective wall section (17) has at least one passage hole (20), wherein passage holes (20) of the wall sections (17) are in alignment with one another, and a connecting element (22) passes through these passage holes (20).
12. Arrangement according to Claim 11, characterized in that the connecting element (22) is in the form of a latching element, in particular in the form of a latching rivet.
13. Arrangement according to Claim 11 or 12, wherein the connecting element (22) passes through a spacer disc (23) which is arranged between the wall sections (17) and is supported against the wall sections (17), in particular passes through an annular spacer disc (23).
14. Arrangement according to Claim 13, characterized in that the spacer disc (23) is a central disc which engages into at least one of the wall sections (17) in a centred manner.

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