DE19748542C2 - Junction box - Google Patents

Description

I. Field of application

The invention relates to electrical connection boxes.

II. Technical background

Such junction boxes are used in various forms to electrical To connect consumers to the power grid, and u. U. other elements such as fuses, testing options, etc.

A typical and common application are the junction boxes, which are in the hollow interior of light poles for street lighting vertical are arranged. The cables of the Power grid in the junction box while from the upper or lower The end of the outgoing cable to the electrical consumer, usually the Street lighting, leave the junction box.

The junction box itself is usually made of plastic, and has a - except for the front cable openings - trough-shaped Basic assembly part in which the internals are located.

An attachment can be attached to this basic assembly part, with between Basic assembly and attachment the clamp is fixed, which is a seal  between the outer circumference of the cable and the junction box itself.

A cover can be attached to the assembly base and attachment, which is the connection box tightly closed.

Depending on the application, there are different electri in the interior of the box cal built-in components, for example easy-to-install clamps, mostly sliding clamps, for connecting the input cables, individual terminals or terminal strips for Connection of the outgoing cables, intermediate fuse bases as well as a the above-mentioned elements connecting wiring, today mostly made of metal seemed to exist with a flat, rectangular cross section of such strength that they must be preformed and not bent by hand at the place of use as required Need to become.

Furthermore, sockets or other connection options can be available to targeted - for work on the street lighting network - via a cross connection to be able to establish a short circuit, attach measuring tips of a measuring device can or the like.

In addition, parts of these internals must be secured using electrically non-conductive Protective covers are provided to attach to the remaining exposed fixtures To be able to perform live work.

So it is from the brochure "Weatherproof termination for telecommunication cables" (WEV) from Telefunken, 1964, mark: AW / Wb 615 FmK, a connection box for connecting electrical consumers, a basic assembly and an attachment that can be attached to at least one of the end areas shows and a cover closing the junction box and a protective cover. In the interior of this known junction box, electrical installation elements and covers are arranged, but rapid replacement, in particular of the terminal strips, and supplementing the junction box with further installation elements is not possible there.

GB-A-2135531 shows an electrical connection box in which, in order to improve the ease of installation, catches 14 are provided for fastening a connection block 6 to the bottom of the basic assembly part 1 . The catches 14 shown there are, however, specially designed for the attachment of terminal blocks 6 in a discrete position, namely in the middle of the basic assembly part 1 . It is neither possible to use other electrical installations, the latching means of which are arranged elsewhere, nor can the connection blocks 6 be positioned at a position other than the specified one and in particular not be slipped in the housing.

DE-AS-11 77 709 shows a junction box in which the basic assembly part on the outside of its side walls and only in the end area to snap on the Has upper part.

DE-OS-18 03 279 shows in FIG. 4 an electrical connection box which carries an upper part on the assembly base in its lower end region and there are cutouts for access cables.

III. Presentation of the invention a) Technical task

Such connection boxes are especially high security Requirements.

Nevertheless, the object of the present invention is that both Manufacturing should be simple and therefore inexpensive, as well as Configuration for the respective application and especially the assembly on respective place of use in the cramped conditions inside a light pole should be easy to install.

b) solving the problem

This object is solved by the characterizing features of claim 1. Advantageous embodiments result from the subclaims.

This object is achieved in that the junction box has first catches for fastening the electrical installations and second catches for attaching the protection Cover, wherein the first and the second notches in the basic assembly part on the inside of two opposite side walls of the assembly are basically formed, the side walls the longitudinal direction of the Define the junction box, and the first notches essentially along the the entire length of the side walls of the basic assembly part. In addition to Locking can be done later, then the Locking only serves as a pre-fixation.

Such screwing can - for example due to existing Safety regulations - may also be necessary, especially when fastening the Attachment on the basic assembly part, it is already very helpful to get a quick one To be able to pre-fix by locking, which results in the screw connection the cable and the clamp surrounding the cable are already tight and positive between the attachment and the basic assembly part.

Different demands are made on the latches:
While the mounting of the built-in parts in the junction box is usually done only once, and loosening is no longer necessary or only very necessary, the connection between the cover and the basic assembly part and between
Attachment and basic assembly with a comparatively multiple loosening and re-fixing can be expected.

In this respect, these last-mentioned locking connections must be held securely at any time, both at very high and very low outside temperatures, be reliably solvable, without threatening damage to one of the Components.

c) working examples

An embodiment according to the invention is below with reference to the figures described in more detail by way of example. Show it:

Fig. 1: the closed terminal box in a side view;

FIG. 2 shows a cross section of the terminal box in accordance with II-II, installed in a light poles,

Fig. 3 is a plan view of the mounting base,

FIGS. 3a and 3b: the views of the mounting base portion, viewed in the longitudinal direction,

. FIG. 4 shows a longitudinal section through the mounting base part of Figure 3,

FIG. 5 shows a cross-section through the mounting base part along the line EE,

Figures 6a and 6b. Cross-sections at the points HH or FF,

Fig. 7 is a plan view of the attachment,

Fig. 8 is a view of the attachment as viewed in the longitudinal direction,

Fig. 8a shows a longitudinal section through the cap at AA,

Figure 9:.. A cross-section through the cap along the line BB of Figure 7,

Fig. 10 is a cross-section through the article of Figure 7 taken along line G-G.

Figure 10a:. A view similar to Figure 8 with screwed to the article turning clamp.

FIG. 11 is a plan view of the lid,

FIG. 12a is a side view of the lid,

FIG. 12b is a longitudinal sectional view (DD) by the lid,

Fig. 13: the protective cover in a plan view,

Fig. 14: the protective cover in side view, and

Fig. 15: the protective cover in the longitudinal view (CC).

Fig. 1 shows a closed, fully assembled junction box, as it is usually attached vertically to a wall or inside a light pole.

The junction box 1 consists of a basic assembly part 1 a, which by means of z. B. the screw eyelet 21 or other screwing points is attached to the component carrying the junction box 1 .

On the basic assembly part 1 a, in which the electrical installations are also fastened, an attachment 1 b is placed in the right end region 3 , in the case of vertical installation this is the lower end region. Between the basic assembly part 1 a and the attachment 1 b, the access cables 19 run vertically from below into the junction box 1 .

At the other end, the outgoing cables 20 normally leave the connection box through a grommet in the end wall of the basic assembly part 1 a. Alternatively - when the outgoing cables are to leave on the same side as the front cable 19 access the terminal box 1 - which drop cables 20 'and through the upper portion of the attachment 1 through b the terminal box 1 leave.

For the fitter, the internals in the junction box can be reached as soon as the cover 2 is opened or completely removed, which is articulated via an insert hinge 22 on the attachment 1 b and, in the closed state, completely closes the open top of the basic assembly part 1 a.

For this purpose, in the left end area of FIG. 1, the cover 2 - depending on the installation instructions and requirements for tightness - is only locked relative to the basic assembly part 1 a, and / or additionally screwed.

Fig. 2 shows the installation situation of the junction box 1 in a hollow light pole 4 , from which it can be seen that the generally round inner cross section of the light pole 4 must be optimally used so that the installer at all the electrical installations, which are only indicated by dash-dotted lines, inside of the light pole 4 and can also handle inside the junction box 1 .

In Fig. 2 the basic assembly part 1 a can be seen, which has a trough-shaped shape, and is closed by a hood-shaped cover 2 , cover 2 and basic assembly part 1 a are sealed against each other via a labyrinth seal with small tolerances by the wall of the cover U- shaped overlaps the upper edge of the basic assembly part 1 a.

This labyrinth seal is not subjected to pressure and does not contain an elastic seal that seals only under pressure, since the pressing forces necessary for such a seal that is effective under pressure are not sufficiently secure by simply locking the cover 2 relative to the basic assembly part 1 a or the attachment 1 b can be achieved.

Over a part of the length of the terminal box 2 are in this near the upper edge of the mounting base 1 a usually a protective cover 5 is arranged, which prevents touching the underlying electrical installations, so that in the length range not covered by the protective covers without Danger can be worked.

As shown in FIG. 2, the protective cover 5 , which is also hood-shaped and is mounted within the cover 2 , is latched to the inner surfaces of the side walls 6 of the basic assembly part 1 a via second notches 12 by elastic, outwardly projecting latching noses of the protective cover 5 engage in corresponding recesses in the second catches 12 of the side walls 6 . The locking lugs are chamfered in the insertion direction at the front in a manner known per se in order to facilitate the pushing-in.

Deeper, that is, closer to the bottom 7 of the basic assembly part 1 a, the electrical installations shown in dashed lines are locked by means of first catches 11 with respect to the basic assembly part 1 a. The locking lugs 11 a protrude from the inner surfaces of the side walls 6 in their lower region into the interior, and are undercut by the corresponding counter detents 11 b of the electrical installations.

The basic assembly part 1 a according to FIGS. 1 and 2 is shown in detail in FIGS. 3-6 in different views and sections:

As can be seen, the basic assembly part 1 a is basically trough-shaped, with cutouts 17 for the access cables and cutouts 8 for the outgoing cables in the end walls.

In FIGS. 3 and 4 are 21 to recognize the bolt for bolting of the mounting base part 1 a with respect to a structural member at the upper end and the lower end of a further screw eye 21 'for the same purpose.

The screw holes 23 to be seen in FIG. 3 penetrate the assembly base part completely, and are open at the top and bottom screw holes for screwing the attachment 1 b placed in this longitudinal region.

As FIG. 4 shows, the first notches 11 and second notches 12 already described with reference to FIGS. 1 and 2 extend essentially along the entire length of the basic assembly part 1 a, that is to say the entire area in which electrical installations can be located.

In this case, proceed from the side walls of the mounting base part 1 a inwardly projecting latching lugs 11 a of the first detents 11 without any mounting base pitch in the longitudinal direction 10 by, while arranged above notches 12 regularly spaced in the longitudinal direction 10, the individual detents 12, 12 ', 12 " , 12 '''.

This causes that in the second notches 12 , 12 ',. , , a locking can only be made at discrete positions, while locking at the locking lugs 11 a can be carried out at any point in the longitudinal direction 10 , since both the first notches 11 and the second notches 12 run parallel to the floor 7 .

The first notches 11 are arranged close to the floor, while the second notches 12 are located near the upper edge of the side walls 6 .

In order to enable, but not to force, a defined positioning in the longitudinal direction in installations which engage under the first, lower catches 11, form- fitting elements 16 in the form of transversely extending in the longitudinal direction are regularly spaced on the inside of the base 7 on the longitudinal center in the longitudinal direction Wells arranged.

If the internals have a projection that can engage in these recesses, the corresponding installation part can only be locked in such a longitudinal position on the first catches 11 , at which the corresponding projection of the installation part engages in one of the recesses of the form-locking elements 16 .

If, on the other hand, positioning should be possible at any desired point, the corresponding projection is dispensed with in the built-in part, whereby it must be accepted that even in the locked state, overcoming the friction in the detents 11, a displacement in the longitudinal direction is possible, which is however, depending on the application, it may even be desirable.

In Fig. 4, a fourth catch 14 in the form of a projection can be seen at the upper end on the outer surface of the end wall, which can be engaged behind by a corresponding counter-catch of the cover 2 .

Further, third notches 13 are on the outer surfaces of the side walls 6 in the lower end 3 are present as the corresponding section of FIG. 6b taken along the line FF, which above the screw holes 24 is located in Fig. 3 for the attachment 1 b, FIG.

A plurality of locking lugs are arranged one above the other on the side walls 6 , so that a corresponding counter-locking 13 b, as can be seen, for example, in FIG. 9, can snap into place.

As a result, the basic assembly part and the attachment can be positioned at five different distances from one another in accordance with access cables of different thicknesses which must extend through the cutouts 8 , which remain in the assembled state between the assembly base part 1 a and the attachment 1 b.

These third notches 13 are only used to pre-fix the attachment 1 b on the basic assembly part 1 a in order to also initially position the access cables 19 in the cutouts 8 .

Then a screw connection is made through the attachment into the screw holes 23 of the basic assembly part 1 a, whereby the attachment 1 b is approximated to the fixed contact with the assembly base part 1 a, and the third detents 13 also change the relative position accordingly.

The longitudinal positioning of the attachment 1 b with respect to the mounting base part 1 a takes place through the screw channels 24 around the screw holes 23 of the mounting base part 1 a, which engage in corresponding recesses 24 of the attachment, which in contrast have only a slight axial play.

In the access area, i.e. in the lower end area 3 , of the basic assembly part 1 a, two openings 18 are also arranged on both sides of the longitudinal center, as best seen in FIGS. 3 and 6a, so that between them a web 18 ', which runs in the longitudinal direction 10 , is integrally formed at both ends with the mounting base 1 a together. The openings 18 are open both at the bottom and at the top, and can therefore be used for threading a cable tie around the web 18 ', which is located approximately in each case under one of the recesses 17 for the access cable, which is connected to this cable tie can be pre-fixed in the corresponding recess 17 before the article 1 is placed b, often multiple access cable with the tight spaces can be a problem because of the simultaneous positioning.

FIGS. 8-10 show the cap 1 b in different views and sectional views, which is fitted in the lower end 3 to the mounting base part and serves for fixing the access cable 19 and the sealing of the connection box 1 with respect to this access cables 19.

Aligned with the cutouts 17 of the basic assembly part, cutouts 17 ′ are present in the attachment, which together form the passages for the access cables 19 .

These through openings extend on both sides of the contact plane 9 between attachment 1 b and basic assembly part 1 a for two access cables 19 , and a central extension on the side of attachment 1 b creates space for a third access cable.

On the top of the attachment facing away from the basic assembly part 1 a there are additional alternative passages 25 a, 25 b, which are closed by covers 26 a, 26 b, but which are easily removed by breaking out etc.

After opening these passages 25 a, 25 b, which further above, above the open column 27 providing stability, which in turn runs above the recess 17 for the access cables, the outgoing cables can also pass through these openings 25 a, 25 b through the lower end region be led out of the connection box, which offers the advantage that the opposite, upper end face of the connection box remains completely closed, that is to say it is not penetrated by cables, and therefore cannot pose any sealing problems.

The open column 27 runs undulating above the center of the highest-reaching recess 17 , descends from there to both sides, leads around the recesses 25 a, 25 b for the outgoing cables, and rises to the side walls 6 back on before it lowers again down to the contact level 9 .

FIG. 10a shows a view similar to Figure 8, but with use of the passages 25 a, 25 b for outgoing cables.:

In this case, the output cable 20 'in these passages are clamped for the purpose of strain relief by means of a change of clamp 32, which are placed on the free side of the passages 25 and screwed b with the outer side of the attachment 1 and pressed against the cable and pressed.

Since the open column 27 in the middle between the passages 25 a, 25 b is higher than outside these passages, a different cable diameter can be clamped with the help of a cranked, plate-shaped interchangeable clamp 32 by laying on different sides.

A large cable diameter is clamped when the interchangeable clamp 32 is placed in such a way that its long leg strives outwards from the raised center of the open column 27 to beyond the cable 20 ', and only then does the crank with the lowered short end on the Outside of the attachment 1 b touches down, as shown in the left half of Fig. 10a.

If, on the other hand, the interchangeable clamp 32 extends with the long straight leg in reverse from the lower outer point of the open column 27 inwards over the cable, as shown in the right half of Fig. 10a, and only then rises with the short cranked end A small cable diameter can be clamped in the elevated center of the open column, as shown in the right half of FIG. 10a.

Below the passages 25 a, 25 b, two passages 33 are also provided in the open column 27 , which have a web 34 between them. Through the passages 33 and around the web 34 around again - as also formed on the mounting base 1 a - a cable tie can be pulled through to relieve the strain on the through the passage 25 a or 25 b cable 20 'compared to the attachment 1 b enable.

Figs. 11-12 show the lid 2 in top view, side view and longitudinal section, which is used for sealing of the connection box.

The hood-shaped lid, which has no end wall on its lower, directed against the attachment 1 b, since it bluntly adjoins the attachment 1 b there, has an inwardly bent, longitudinal tongue 31 at this end, which engages under a corresponding extension 28 of the attachment, so that the cover 2 can be pushed approximately parallel, at a slight angle, to the longitudinal direction against the attachment until the tongue 31 engages under the extension 28, thereby preventing it from being lifted away from the basic assembly part 1 a.

At the opposite, upper front end, the cover 2 has a fourth counter detent 14 ', which struts transversely to the longitudinal extent downwards and struts against the mounting base part 1 a, with an inward projection which engages behind the fourth catch 14 on the outside of the mounting base part on this Place serves.

In general, this fourth notch 14/14 'is used only for pre-fixing of the cover 2, and then additionally made through the screw hole 35 through which a screw with the mounting base.

Is to be secured unless the lid solely by means of the fourth detents 14/14 'on the mounting base 1 a and cover 1 b, the lid 2 may be reproduced in the three sides of circumferential groove 36 may be inserted not elastically deformable sealing medium in the contact plane, which only under Sufficient pressure seals a screw connection at 35. Rather, the groove must then be made sufficiently deep to achieve a sufficiently long sealing labyrinth, and the corresponding elevation on the edge of the basic assembly part 1 a must rise correspondingly high.

On both sides of the attachment (see FIG. 7) there are cutouts 24 ′ which are open to the side and serve to receive the screw channels 24 of the basic assembly part and thus to position them on the basic assembly part. In the upper longitudinal end region, ie from the recesses 24 'is offset towards the one end, protruding from approximately half the height of the attachment 1 b to the contact plane 9 at right angles to this long narrow projections with inwardly directed detents 13 b down, which plugging Serve on the basic assembly part and locking with the third locking lugs 13 a, which are present several times one above the other.

B externally on the top of the tower 1 is a abstrebender in the longitudinal direction 10, under tangible projection 28 is further arranged which serves as a form-fitting rear engagement of one end of the lid aufzusetzenden. 2

Flanks 29 protrude forward on both sides of the projection 28 , which have elevations 30 in their mutually facing surfaces, which engage in correspondingly shaped recesses 30 'of the tongue 31 of the cover 2 , which engages under the extension 28 . For this purpose, the tongue 31 of the cover is only slightly narrower than the distance between the flanks 29 , which ensure a limited captivity of the cover, even when it is open, depending on the assembled basic assembly or attachment.

Figs. 13-15 show the protective cover 5 in top view, side view and longitudinal section, which serves to cover the lower portion of the mounting base part 1 a, and to connect in the assembled condition directly to the mounted attachment 1 b to the underlying electrical components not being able to touch.

As the longitudinal section of FIG. 15 shows, the protective cover 5 is hood-shaped for this purpose, the end wall being missing on the lower end side in the installed state, since here the direct connection to the attachment 1 b is to take place.

Since the protective cover 5 is to be latched in the second notches 12 of the basic assembly part 1 a, the protective cover 5 has on the side walls laterally projecting second notches 12 b, which engage under the notches 12 of the basic assembly part and, for better latching, run obliquely in a wedge shape on the outer surface are trained in a known manner.

The protective cover 5 is intended to cover certain electrical installation parts, for example the access terminals, in the assembled state. These catches 12 b are located in the upper end region of the protective cover 5 . In the lower end region there is a positive connection between the protective cover 5 and the attachment in that an extension 38 protrudes from the top over the lower end edge in the middle on the longitudinal axis of the protective cover 5 , which can engage in a corresponding recess in the attachment 1 b .

Since the protective cover 5 in the assembled area is intended to completely cover certain electrical installations, for example the access terminals, within the basic assembly part 1 a, but these installations can be snapped into any longitudinal position, the protective cover 5 must be able to adapt to it in its axial length.

In order not to have to offer different, differently long protective covers 5 , a long protective cover 5 equipped with predetermined breaking points for axial shortening is offered.

The protective cover 5 can be fastened in its upper end region by means of the catches 12 b by pushing it in and snapping in below the second catches 12 of the basic assembly part 1 a. At the lower end, the protective cover 5 is connected via an extension 38 form-locking b with the attached to the mounting base section 1 by the extension 38 projecting at the longitudinal center of the protective cover over the lower edge, so that by sliding in the longitudinal direction 10 of the extension 38 in a corresponding recess engages the essay, which prevents lifting transversely to the longitudinal direction from the essay.

The predetermined breaking points 37 , 37 ', 37 "running transversely to the longitudinal direction can therefore not run continuously straight across the protective cover, but must each leave a protrusion 38 in the middle. FIG. 13 shows an already shortened protective cover, the removed parts are shown in dashed lines. The removal is done by breaking off, for example after pinching off with pliers or a side cutter from both sides.

So that the projection 38 remains, open gaps 39 are provided offset from the predetermined breaking point 37 on the projection 38 . To separate one or more segments, only the predetermined breaking points 37 , 37 ', 37 "have to be severed or broken off. The predetermined breaking points therefore only extend over a limited part of the protective cover width, centrally below the projection 38 ', 38 ", 38 "" ( see Fig. 15) and on both sides with a very small fracture cross-section (see especially Figs. 13 and 14).

REFERENCE SIGN LIST

1

Junction box

1

a basic assembly

1

b essay

2nd

cover

3rd

end

4

Light poles

5

Protective cover

6

side walls

7

ground

8th

Cutout cable grommet

9

Level of contact

10th

Longitudinal direction

11

first catches (installation)

12th

second notches (cover)

13

third notches (attachment)

14

fourth notches (cover / basic assembly part)

15

fifth notches (lid / hinge)

16

Positive locking elements

17th

Recess clip

18th

Breakthroughs

18th

'Footbridge

19th

Access cable

20th

,

20th

'Outgoing cable

21

,

21

'Screw eye

22

Insert hinge

23

Screw hole

24th

Screw channel

24th

'Cutouts

25th

Passage

26

Covers

27

open column

28

head Start

30th

' Deepening

30th

Survey

31

tongue

32

Interchangeable clamps

33

Culverts

35

Screw hole

36

Groove

37

Predetermined breaking point

38

Continuation

39

open columns

Claims (19)

1. Junction box ( 1 ) for connecting electrical consumers, in particular for accommodating in hollow light poles ( 4 ) with a basic assembly part ( 1 a), an attachment ( 1 b) that can be fastened to at least one of the end regions ( 3 ), one the junction box ( 1 ) closing lid ( 2 ) and a protective cover ( 5 ), characterized in that the connection box ( 1 ) has first notches ( 11 ) for fastening the electrical internals and second notches ( 12 ) for fastening the protective cover ( 5 ), the first and the second notches ( 11 , 12 ) in the mounting base ( 1 a) on the inner sides of two opposite side walls ( 6 ) of the mounting base ( 1 a) are formed, the side walls ( 6 ) defining the longitudinal direction ( 10 ) of the connection box ( 1 ) , and the first notches ( 11 ) run essentially along the entire length of the side walls ( 6 ) of the basic assembly part ( 1 a). 2. Junction box according to claim 1, characterized in that detents ( 11 , 12 , 13 , 14 ), which have a positive locking connection against lifting the attachment ( 1 b), the protective cover ( 5 ) and the cover ( 2 ) from the basic assembly part ( 1 a) offer, and additional positive locking elements ( 16 ) for positioning in the longitudinal direction ( 10 ) are available. 3. Connection box according to claim 2, characterized in that the positive locking elements ( 16 ) for positioning in the longitudinal direction ( 10 ) for the first and second notches ( 11 , 12 ) can be used together. 4. Junction box according to claim 2 or 3, characterized in that the positive locking elements ( 16 ) on the top of the bottom ( 7 ) of the basic assembly part ( 1 a) and are formed as successively arranged in the longitudinal direction ( 10 ) depressions or elevations. 5. Connection box according to one of the preceding claims, characterized in that the first and second notches ( 11 , 12 ) are arranged at different heights (h, H) relative to the bottom ( 7 ) of the connection box ( 1 ) and the second notches ( 12 ) over the first notches ( 11 ). 6. Connection box according to one of the preceding claims, characterized in that the basic assembly part ( 1 a), outside on its side walls ( 6 ) in the end region, has third catches ( 13 ) for attaching the attachment ( 1 b) and form-locking elements ( 16 ) for Positioning of the electrical installations in the longitudinal direction ( 10 ), the peripheral walls of the screw channels ( 24 ) serving as positive locking elements. 7. Connection box according to one of the preceding claims, characterized in that the attachment ( 1 b) can be screwed in addition to the latching with the basic assembly part ( 1 a). 8. Connection box according to one of the preceding claims, characterized in that the basic assembly part ( 1 a) and / or the attachment ( 1 b) have fourth catches ( 14 ) for closing the cover ( 2 ), and a form-fitting insertion hinge ( 22 ), which holds the lid ( 2 ) in the open state - ie that the catches ( 14 ) are not engaged - in an approximately 90 ° open position with respect to the basic assembly part ( 1 a). 9. Connection box according to one of the preceding claims, characterized in that the attachment ( 1 b) and / or the cover ( 2 ) can be screwed in addition to the latching connection with the component carrying them. 10. Connection box according to one of the preceding claims, characterized in that a cable grommet for the outgoing cables ( 20 ) at the upper end - the attachment ( 1 b) facing away - the terminal box, in the basic assembly part ( 1 a) transversely to the cable passage direction, transversely to Contact level ( 9 ) between the basic assembly part ( 1 a) and cover ( 2 ), can be inserted into the basic assembly part ( 1 a) and is positively received in a recess in the direction of cable passage there. 11. Connection box according to one of the preceding claims, characterized in that an elastic plug clamp at the lower end - the attachment ( 1 b) facing end - of the connection box ( 1 ) for the access cable ( 19 ) of the connection box ( 1 ), transversely to the cable passage direction, transversely to the plane of contact between the basic assembly part ( 1 a) and the attachment ( 1 b), can be pushed in and is positively received in a recess ( 17 ) in the direction of the cable passage. 12. Junction box according to one of the preceding claims, characterized in that the basic assembly part ( 1 a), outside the box interior, has devices for inserting and tightening a cable tie, extending transversely to the cable passage direction, open to the outside, openings ( 18 ) form a web ( 18 ') between them. 13. Connection box according to one of claims 6 to 12, characterized in that the third notches ( 13 ) on the attachment ( 1 b) on each side comprises a single latching element ( 13 b), while the counter latches ( 13 a) on the outer surface of the Side walls 6 ) are present several times, corresponding to different distances between the attachment ( 1 b) and the basic assembly part ( 1 a). 14. Connection box according to one of the preceding claims, characterized in that the cover ( 2 ) with respect to the mounting base ( 1 a) and attachment ( 1 b) is sealed via a labyrinth seal which is not under pressure in the closed state. 15. Connection box according to one of the preceding claims, characterized in that the attachment ( 1 b) with notches ( 13 b) in the longitudinal direction ( 10 ) in the lower end region - ie the attachment ( 1 b) facing the end of the connection box ( 1 ) - opposite the basic assembly part ( 1 a) is arranged and in addition to the cutouts ( 17 ) for the access cables in their upper end - ie the attachment ( 1 b) facing away from the terminal box ( 1 ), facing away from the basic assembly part ( 1 a), at least one alternative end region Passage ( 25 ) for the outlet hood. 16. Junction box according to claim 15, characterized in that outlet openings in the junction box ( 1 ) for leading cables through easily removable closure plates which are integrally formed with the attachment ( 1 b) are closed. 17. Connection box according to one of the preceding claims, characterized in that the first notches ( 11 ) for fastening the electrical installations in the longitudinal direction ( 10 ) on the basic assembly part ( 1 a) are formed continuously and the second notches for fastening the protective cover ( 5 ) in the longitudinal direction ( 10 ) one behind the other comprises a plurality of separate notches ( 12 , 12 ', 12 ",...). 18. Connection box according to one of the preceding claims, characterized in that the protective cover ( 5 ) in the longitudinal direction ( 10 ) has predetermined breaking points ( 37 ) for shortening the protective cover ( 5 ) at a relative distance corresponding to the longitudinal distance of the second catches ( 12 ) of the basic assembly part ( 1 a). 19. Connection box according to claim 18, characterized in that the predetermined breaking points ( 37 , 37 , 37 ") in the view of the protective cover ( 5 ) do not extend to the longitudinal center, so that there is always an extension ( 38 ,) over the front edge in the middle. 38 ') in the longitudinal direction to protrude into the attachment ( 1 b).