EP2614515A1

EP2614515A1 - Switching device and accessory on the connecting side

Info

Publication number: EP2614515A1
Application number: EP11761531.0A
Authority: EP
Inventors: Karsten Gerving
Original assignee: Eaton Electrical IP GmbH and Co KG
Current assignee: Eaton Electrical IP GmbH and Co KG
Priority date: 2010-09-08
Filing date: 2011-08-30
Publication date: 2013-07-17
Anticipated expiration: 2031-08-30
Also published as: RU2013115423A; CA2810308A1; EP2614515B1; PL2614515T3; US8618897B2; CN103229267B; US20130307650A1; DE202010012329U1; CN103229267A; RU2582574C2; BR112013005633A2; WO2012031946A1

Abstract

The invention relates to a switching device with a switching device housing, having first guiding and supporting recesses on the connecting side and at least one first detent cam that points away from the front face with a first detent surface. A protective cover which is designed as an accessory and which consists of two lateral protective walls and a front face protective wall that connects said lateral walls is equipped with at least one first detent hook, which points towards the front face protective wall with a second detent surface and which can be connected to the first detent cam, on the protective cover end face that points towards the switching device. A cable clamping block is equipped with second guiding and supporting formations that correspond to the first guiding and supporting formations and with at least one resiliently arranged third detent hook, which points towards the front face with a third detent surface and which can be connected to the first detent cam, on the cable clamping block rear wall that points towards the switching device. The cable clamping block is equipped with at least one second detent cam, the position and shape of which corresponds to the first detent cam and which can be connected to the first detent hook, on the front wall that points away from the switching device.

Description

SWITCHGEAR AND CONNECTIVE ACCESSORIES

The invention relates to an electrical switching device for use in

Low-voltage range, in particular an electromagnetic switching device, with a switching device housing made of insulating molding material, with supply and load side cable connections, which are opposite to each other

Connection sides of the switchgear housing are accessible, and accessories, which is at least indirectly connectable when needed on the connection sides with the switching device. DE 90 11 899 Ul as the closest prior art discloses an electromagnetic switching device and connection-side accessories. As an accessory, a cable terminal block is provided in a mold housing, which is positively connected to the supply or or and the load-side connection side of the switchgear housing. For this purpose, the terminal sides of the switchgear housing each have two perpendicular to the front side of the switching device housing, rear grip trained groove-like Führungsungs- and Halterungsausnehmungen, which are engageable with two corresponding leadership and Halterungsanformungen the cable terminal block into engagement and connection. Another accessory is a the

Protection against contact against live parts serving protective cover made of molded material provided. The protective cover consists of two lateral ones

Protective walls, one of these connecting frontal bulkhead and connected thereto, intermediate barrier ribs. The protective cover can optionally be mounted directly on the connection side of the switchgear housing or on the cable terminal block. For attachment to the switchgear housing, the protective cover is equipped on one end with guide and Halterungsanformungen that the

Guide and Halterungsanformungen the cable clamp block in position and shape correspond to and with the guide and Halterungsausnehmungen of

Switching device housing into engagement and connection can be brought. To attach the Protective cover on the cable clamp block has these two perpendicular to the front side guide and bracket s rails on the sauces with appropriate guide and holder snehmungen on the protective cover into engagement and connection can be brought. By means of a molded onto the protective cover latch hook the protective cover can be locked in a specific position. To adapt the protective cover in length to desired requirements, the protective cover extending transversely to the cable longitudinal direction of predetermined breaking lines.

In contrast, in a power s switch to document DE 295 05 046 Ul a cable terminal block is screwed onto the switchgear housing. In the

Attachment of a protective cover on the cable terminal block act on this provided connection-side strip pairs, connection-side grooves and laterally outwardly facing L-shaped recesses with correspondingly formed on the protective cover front side pairs of slots or end-side clamping ribs or

together with laterally inwardly pointing retaining bars. A direct mounting of the protective cover to the switchgear housing is not provided.

The invention is based on the object of a simplification in terms of production and handling training a switching device with connection-side accessories.

Starting from a switching device and connection-side accessories of the type mentioned, the object is achieved by the features of the independent claim, while the dependent claims advantageous developments of the invention can be found.

By trained on the switching device housing first and leadership

Halterungsausnehmungen and locking cams, formed by trained on a protective cover first leadership and Halterungsanungsanungen and latching hooks, formed on a Kabelklemmenblock, the first leadership and

Halterungsanformungen similar second guide and Halterungsanformungen and the first latch hook same third latch hook on the one hand and the first Guiding and Halterungsausnehmungen similar second leadership and

Halterungsausnehmungen and the first locking cams equivalent second locking cams on the other hand, it is possible in a simple and adapted to the respective requirements, the switching device to combine with the connection-side accessories. The switching device can be connected on one connection side or both connection sides with a

Protective cover alone, with a cable terminal block alone, with one

Cable terminal block should be equipped with a protective cover or without this accessory. To realize the mentioned different combinations only similar fasteners are provided and no special instructions to observe.

To adapt to different cable diameters, it is advantageous that

Protective cover to be mounted at different distances from the front, including in addition to the at least first latching hook a corresponding and offset from this second latching hook is provided.

Expediently paired leadership and are

Halterungsausnehmungen and leadership and Halterungsanformungen or

Locking cams and locking hooks.

It is advantageous to have the at least one latching hook on one of the front

Protective wall to arrange elastically protruding spring tab.

For an easy and safe installation of the connection-side accessories, it is advantageous or expedient if the front and the guide and

Halterungsausnehmungen open leak and if the leadership and

Halterungsausnehmungen and the guide and Halterungsanformungen are formed at least partially with L-shaped cross-section.

Another advantage in terms of adaptation to the particular circumstances arises with hat-shaped finger protection caps, in addition to the

Access openings for the cable connections provided on the cable terminal block Terminal strips can be used and locked by the second and, if necessary, additional locking cams. Of additional advantage here is the pierceable as needed lattice-like top surface of the finger protection caps.

For better separation of the connection cable, it is expedient to provide the protective cover with barrier ribs. For suitable adaptation to the

Connection conditions, e.g. to the length of the cable lugs connected to the connecting cables, it is also expedient to perform the protective cover by at least one predetermined breaking line ablated.

An advantageous development consists in the equipment of the cable terminal block with Ausbrechöffnungen, which allow access to auxiliary conductor connections for connecting auxiliary conductors for particular control or signaling signals, if necessary.

Further details and advantages of the invention will become apparent from the following, explained with reference to figures embodiment. Show it

Fig. 1 shows a switching device on a connection side without and on the

opposite connection side with connection-side accessories;

2 shows the switching device with cable terminal block.

3 shows the switching device with cable terminal block and finger protection caps.

4 shows the switching device with cable clamp block and protective cover;

Figure 5 shows the switching device with protective cover in a partially broken view.

Fig. 6 is a detail of Fig. 5;

7 shows the protective cover from a partially device-side perspective;

Fig. 8 is a detail of Fig. 7;

9 shows the cable terminal block from a partially device-side perspective.

10: a detail of Fig. 9 and

11 shows a finger protection cap from the device side perspective. Fig. 1 to Fig. 4 show the different and advantageous combinations of a switching device 1, in the example in the form of a three-pole electromagnetic

Switching device, with its connection-side accessory according to the invention. Fig. 1 shows the surrounded by a switching device housing 10 made of insulating molding material switching device 1 on its supply side terminal side 12 without inventive accessories. The indicated by cable lugs 14 connection cables are with

Cable connections 16 of the switching device 1 screwed. Before the load side

Connection side 13 of the switching device 1, a protective cover 2 made of insulating molding material were mounted, resulting in a far-reaching protection against live metal parts. Fig. 2 shows the switching device 1 in

Combination with a mounted in front of the connection side 13 and

Cable terminal block 3 with insulating molded housing 17. Here is the

Connecting connecting cables to the access openings 18 of the

Formstoffgehäuses 17 accessible cable connections 16 possible. Fig. 3 shows similar to Fig. 2 shows a combination of the switching device 1 with the cable terminal block 3, but this time the access openings 18 are protected by finger protection caps 4 from touching. The finger protection caps 4 are in new condition and can be pierced for the purpose of passing cable ends in a suitable manner on their lattice-like top surface 22. Fig. 4 shows a combination of the switching device 1 with protective cover 2 and cable terminal block 3. The

Cable terminal block 3 is mounted in front of the terminal side 13 of the switching device 1, and the protective cover 2 is mounted in front of the access openings 18 of the cable terminal block 3. This combination ensures both the connection of connection cables via the cable terminal block 3 as well as a far-reaching protection against live parts.

According to Fig. 1, Fig. 5 and Fig. 6 is on the connection sides 12 and 13 of the

Switching device housing 10 each have a pair of first guide and

Halterungsausnehmungen 24 formed. The groove-shaped guide and

Halterungsausnehmungen 24 extend perpendicular to the front side 26 of the switching device 1, run to the front 26 open and are formed in their remote from the front side 26 area behind grip with L-shaped cross-section. Of the Connection sides 12, 13 are also pairs of first locking cam 28 from which point with first sliding bevels 32 to the front 26 and with a first locking surface 35 parallel and facing away from the front side 26. According to Fig. 7, the protective cover 2 consists of two lateral outer

Protective walls 38 and a connecting these front-side protective wall 39. From the protective wall 39 are parallel to the side walls 38 inner barrier ribs 40 from which separate the connecting cable polweise. According to Fig. 7 and Fig. 8, the protective cover 2 has a pair of strip-shaped first guide and at its to be connected to the terminal side 12 and 13 of the switching device 1 end face 42

Holder s formations 44 on. Front side of the front-side protective wall 39, a pair of first spring tabs 46 is formed. The first spring tabs 46 are elastically bendable parallel to the protective walls 38 and 39. On each spring tab 46, a first latching hook 48 and a second latching hook 49 are each formed. The latching hooks 48, 49 are of similar construction and point away from the front-side protective wall 39 with second sliding bevels 33 and extend parallel to the front-side protective wall 39 with second latching surfaces 36. The latching hooks 48, 49 are in each case in the direction of the front-side protective wall 39 on each first spring clip 46 arranged one behind the other, wherein the second latching hooks 49 are closer to the front-side protective wall 39.

When attaching the protective cover 2 on the corresponding terminal side 12 or 13 of the switching device 1, the first guide and Halterungsanformungen 44 engage in the first guide and Halterungsausnehmungen 24 of the switching device housing 10 and thus make a hintergriffige connection. In this case, according to FIGS. 5 to 8, the sliding bevels 32 of the first latching cams 28 slide over the sliding bevels 33 of the first latching hooks 48, whereupon the first latching surfaces 35 are in contact with each other

Locking cams 28 on the locking surfaces 36 of the first latching hook 48, the protective cover 2 is locked in a first position. If a mounting position of the protective cover 2 situated farther from FIG. 5 is desired, then it can be effected by further application of force to the protective cover 2 that the sliding bevels 32 of the first locking cam 28 continue over the sliding bevels 33 slide second latching hook 49, after which the protective cover 2 is locked in a second position by abutment of the locking surfaces 35 of the first locking cam 28 on the locking surfaces 36 of the second latching hooks 49. By means of a suitable tool on at the junction of front-side protective wall 39 and first spring tabs 46 released first half-openings 52, the locking surfaces 35, 36 disengaged and thus the protective cover 2 are released from the switching device housing 10.

According to FIG. 9 and FIG. 10, the cable clamp block 3 is provided on its rear wall 54 facing the switching device 1 with a pair of strip-shaped second guide s and holding formations 45 arranged in mutual arrangement and shape of the first guiding and holding formations 44 of FIG Protective cover 2 (Fig. 7) correspond and are partially L-shaped. Furthermore, a pair of second spring tabs 47 is provided on the rear wall 54, each of which carries a third latching hook 50. With regard to their arrangement and their shape, in particular with respect to a third sliding bevel 34 and a third latching surface 37, the third latching hooks 50 correspond to the second latching hook 49 of the protective cover 2 (FIG. 8). When attaching the cable terminal block 3 to the corresponding connection side 12 or 13 of the switching device 1, the second Führungsungs- and

Halterungsanformungen 45 in the first guide and Halterungsausnehmungen 24 of the switching device housing 10 and thus make a hintergriffige connection forth. The sliding bevels 32 of the first latching cam 28 slide over the sliding bevels 34 of the third latching hook 50, after which by abutment of the latching surfaces 35 of the first latching cam 28 on the latching surfaces 37 of the third latching hook 50 of

Cable terminal block 3 is locked. By means of a suitable tool on at the junctions of the rear wall 54 and second spring tabs 47 released second half-openings 53, the locking surfaces 35, 37 disengaged and thus the cable terminal block 3 are released from the switching device housing 10. According to Fig. 2, the cable terminal block 3 is at its front facing away from the switching device 1 front wall 56 with a pair of groove-shaped second guide and

Halterungsausnehmungen 25 which correspond in arrangement and shape to the first guide and Halterungsausnehmungen 24 of the switching device 1.

Furthermore, a pair of second locking cams 29 are provided on the front wall 56, which are arranged in front of the two outer access openings 18. The second

Locking cams 29 are the same in terms of their arrangement and shape

Locking cam 28 on the switching device 1 (Fig. 1). When attaching the protective cover 2 on the front wall 56 of the

Cable clamp block 3 grip the first guide and holder formations 44 of the protective cover 2 in the second guide and Halterungsausnehmungen 25 and thus make a hintergriffige connection. In this case, act in the manner already described, the second locking cam 29 with the first and second

Latch hooks 48 and 49 of the protective cover 2 together.

According to FIG. 2 and FIG. 3, a pair of L-shaped clamping strips 58 are integrally formed on each of the front wall 56 of the cable terminal block 3 next to each access opening 18. Furthermore, in front of the central access opening 18, a second locking cam 29 equivalent additional locking cam 30 is provided. The

Finger protection caps 4 are shown in FIG. 3 and 11 box-shaped with one of the lattice-like top surface 22 opposite open side and formed in hutartigem profile with elastic side walls. The finger protection caps 4 can by means of the brim-like edge surfaces 60 of the elastic longitudinal sides 62 behind the

Terminal strips 58 are clamped. The finger protection caps 4 are thereby determined via their respective front transverse side 64 by means of the locking cams 29, 30 in their position on the cable terminal block 3. The top surfaces 22 are broken only to the extent that the ends of the cable to be connected can pass through, whereby a far-reaching finger protection is guaranteed against dangerous voltage contacts. The protective cover 2 is provided according to FIG. 7 parallel to its end face 42 with a predetermined breaking line 68 passing over the side walls 38, 39. With the help of

Rupture line 68, the protective cover 2 can be shortened for suitable adaptation to be connected cables.

Fig. 2 shows that the cable terminal block 3 on its facing away from the switching device 1 front wall 56 with Ausbrechöffnungen 70 for lying behind

Auxiliary conductor connections is equipped. By breaking away the breakout openings 70 access to auxiliary conductor terminals for connecting auxiliary conductors for particular control or reporting signals is free. Polweise each pair of locking cam 29, a pair of Ausbrechöffnungen 70 are provided. As a result, auxiliary conductors can be connected as needed above or or and below to the auxiliary conductor connections.

In the illustrations of the drawing, only the load-side connection side 13 of the switching device 1 in combination with the connection-side accessories 2, 3, 4 is shown. It is obvious that also the supply s since ige connection side 12 alone or both connection sides 12, 13 can be combined in the same or different ways with the connection-side accessories or can.

LIST OF REFERENCE NUMBERS

1 switching device

2 protective cover

3 cable terminal block

4 finger protection cap

10 switchgear housings

12; 13 connection side

14 cable lugs

16 cable connections

17 mold housing

18 access openings

22 deck area

24; 25 guide and Halterungsausnehmungen

26 front

28; 29; 30 locking cams

32; 33; 34 slip slope

35; 36; 37 locking surface

38; 39 protective walls

40 barrier ribs

42 front side

44; 45 Guiding and holding molds

46; 47 spring tab

48; 49; 50 snap hooks

52; 53 half-openings

54 rear wall

56 front wall

58 terminal strips

60 edge areas

62 long sides

64 transverse side

68 predetermined breaking line

70 knockout opening

Claims

claims

Electrical switching device, in particular electromagnetic switching device, with a switching device housing (10) made of molding material, with supply and load side located on mutually remote connection sides (12, 13)

Cable connections (16) and connection-side accessories, with the following features:

- The switching device housing (10) has connection side perpendicular to the front

(26) running, hintergriffig formed, groove-like first Führungsund Halterungsausnehmungen (24) and at least one with a first latching surface (35) facing away from the front side (26) first locking cam (28),

- Designed as an accessory protective cover (2) with two lateral

Protective walls (38) and a front connecting them

Protective wall (39) is on her to the switching device (1) facing end face (42) with first guide s- and bracket sanformungen (44), which engage with the first guide and Halterungsausnehmungen (24) engaging and positively in combination , and with at least one resiliently arranged, with a second latching surface (36) to the front-side protective wall (39) facing out the first latching hook (48) which is engageable with the first latching cam (28), equipped,

- Designed as an accessory cable terminal block (3) is on his for

Switching device (1) facing rear wall (54) with in position and shape the first guide and holder sanformungen (44) corresponding second guide and holder sanformungen (45), with the first guide and Halterungsausnehmungen (24) engages behind and can be brought into positive connection, as well as with at least one resiliently arranged, with a third latching surface (37) for

Front side (26) facing third latching hook (50) which is engageable with the first latching cam (28), equipped,

- The cable terminal block (3) is at its from the switching device (1) away

facing front wall (56) in position and shape the first guide and holding recesses (24) corresponding second guide and Halterungsausnehmungen (25) with the first guide and

Halterungsausformungen (44) engage behind a form-fitting manner and in combination, and with at least one in position and shape the first locking cam (28) corresponding second locking cams

(29), which is engageable with the first latching hook (48), equipped.

Switching device and connection-side accessories according to the preceding claim, characterized in that on the protective cover (2) at least one second latching hook (49) which corresponds to the at least first latching hook (48) in form and function and with respect to this towards the front-side protective wall (39) is arranged offset, is provided.

Switching device and connection-side accessory according to one of the preceding

Claims, characterized in that the first and second guide and support recesses (24; 25) and the first and second

Guiding and holding moldings (44, 45) are formed in pairs.

Claims, characterized in that the first and the second latching cams (28; 29) and the latching hooks (48; 49; 50) are designed in pairs.

Claims, characterized in that the at least one latching hook (48; 49; 50) is arranged on an elastically protruding spring tab (46; 47).

Claims, characterized in that the guide and Halterungsausnehmungen (24; 25) open towards the front side (26) and that these and the guide and holding sanformungen (44; 45) are at least partially formed with L-shaped cross-section. Switching device and connection-side accessory according to one of the preceding

Claims, characterized in that as a further accessory box-shaped and equipped with brim-like edge surfaces (60)

Finger protection caps (4) are provided that on the front wall (56) of the cable terminal block (3) adjacent terminal-side access openings (18) in pairs and perpendicular to the front side (26) extending L-shaped terminal strips (58) are integrally formed with the edge surfaces (60 ) and can be brought into engagement with one another by recesses, and that the second locking cams (29) and, if necessary, these identical additional locking cams (30) are arranged in the direction of the front side (26) next to the access openings (18) and on these the finger protection caps (4) in FIG applied state applied.

Switching device and connection-side accessories according to the preceding claim, characterized in that the substantially parallel to the front wall (56) of the cable block (3) extending cover surface (22) of the finger protection caps (4) is formed lattice-like and puncturable as needed.

Claims, characterized in that protrude from the front-side protective wall (39) of the protective cover (2) parallel to the lateral protective walls (38) extending separating ribs (40).

Claims, characterized in that the protective cover (2) has at least one parallel to the end face (42) extending predetermined breaking line (68).

Claims, characterized in that the cable terminal block (3) on its front side facing away from the switching device (1) front wall (56) Ausbrechöffnungen (70) for underlying auxiliary conductor terminals.