EP0446875A2 - Protective casings for optical devices - Google Patents

Abstract

A protective casing for optical instruments, particularly a weatherproof casing with a casing shell (2), a casing axis A-A, a front wall (3) and a backwall (4) located on each end of the casing shell, and a casing support (9) located on the underside, which is attached to a stationary base (12). With at least one electric cable (23a) leading to a connector plug (11) located on the backwall (4). A detachable cable casing (20) is provided to house the cables out of sight, which extends from the base (12) to the connector plug (11), and together with the wall elements of the protective casing forms a closed cable conduit (21). At least one electrical cable (23a) runs inside the cable casing (20). A particular advantage is that the cable casing first runs between the casing support (9) and the cable casing (20) parallel to the surface of the casing shell (2), forming the first segment (21a) of the cable conduit (21), and then is led in an angle around the back bottom edge (22) of the backwall (4). From there it runs forming the second segment (21b) of the cable conduit (21) to the connector plug (11), overlapping the same.

Description

The invention relates to a protective housing for optical devices, in particular a weatherproof housing for video cameras of surveillance systems, with a housing jacket, with a housing axis AA, each with a front wall and rear wall arranged at the respective end of the housing jacket, with a housing support located on the underside of the housing jacket for the attachment of the protective housing on a fixed bearing and with at least one electrical line, which is led to a connection point located in the rear wall.

Such a protective housing is known from the applicant's company publication "VIDEO-Security", issue 3/89, pages 8/9. Protective housings of this type are fitted after installation on site using a wall bracket, a ceiling suspension or the like with the optical devices and the associated electrical devices provided for this purpose. During assembly, maintenance and repair work, as well as in the event of retrofitting, the electrical connections may have to be disconnected or the cables even replaced.

In the known protective housing, the electrical lines run from the fastening point of a wall bracket directly to the rear wall of the housing and from here through a weatherproof cable duct into the interior of the protective housing. Because of the required swiveling and inclinability of the weather protection housing (the bearing forms a kind of gimbal suspension), the lines must be of sufficient length to allow the necessary movements in the area of the rear wall of the protection housing. Such an "open" line laying not only looks ugly, the freely accessible lines also offer a predestined target for acts of sabotage.

The housing jacket can be made as a section of an extruded tube made of light metal and can have any cross-sectional shape, for example square, rectangular, octagonal or round. Front wall and rear wall are preferably formed as castings made of light metal, and there is a window in the front wall arranged. The front wall and rear wall are preferably screwed weatherproof with the interposition of seals to the housing jacket.

The invention has for its object to provide a protective housing of the type described above, in which a concealed laying of the lines is possible without excessive effort in making or loosening the connections.

The object is achieved in the protective housing specified at the outset according to the invention in that a removable conduit housing with U-shaped mutually arranged wall elements is provided starting from the bearing and forms a closed conduit together with wall elements of the protective housing in which the at least one electrical line is housed and that overlaps the junction.

A line duct is formed by the line housing according to the invention, utilizing surface parts of the housing shell or the housing support and optionally the rear wall of the housing, the line housing enclosing the line channel being able to be connected to and separated from the protective housing relatively quickly, but not within such a short period of time as would be required to cut the lines.

The inventive structural union of the cable housing with the protective housing creates an attractive overall visual impression with a closed outer surface of the overall arrangement, so that the otherwise possible dirt accumulation is reduced to a minimum.

Because the line (s) is (are) routed through the bearing, it can be laid in the shortest possible way. Furthermore, with a plug connection and when the housing is removed from the bearing, the plug does not need to be disconnected from the line, since the line does not have to be pulled through a narrow opening at this point.

In order to make the connection point accessible from the rear of the housing, it is particularly advantageous to provide a cable housing which initially runs parallel to the surface of the housing shell, forming a first section of the cable duct between the housing support and the cable housing, and then at an angle around the rear lower edge the rear wall is guided around and overlaps the connection point located in the rear wall to form a second section of the conduit.

It is furthermore particularly advantageous if the line housing has a vertical center plane which runs through the housing axis, and if the line housing is closed on at least three circumferential sides by U-shaped wall elements with respect to cross sections which run perpendicular to this center plane , two of which form the legs, the free ends of which face the housing shell, and of which the third wall element forms the yoke of the "U".

With a corresponding design of the rear wall of the housing, it is again particularly advantageous if the wall element forming the yoke is V-shaped in a sectional plane that coincides with the central plane and forms a base part and a rear wall part, the apex region lying between the base part and rear wall part is rounded.

• a) die Rückwand des Gehäuses auf ihrer dem Gehäusemantel abgekehrten Seite eine Verschlußwand besitzt, die in einer vertikalen Schnittebene unter Bildung einer nach außen geöffneten prismatischen Ausnehmung mit waagrechter Achse V-förmig abgewinkelt ausgebildet ist, wobei der öffnungswinkel des "V" 90 Grad beträgt und beide Schenkel des "V" unter einem spitzen Winkel zur Gehäuseachse A-A verlaufen,
• b) in dem den oberen Schenkel des "V" bildenden Wandelement ein erster Steckverbindungsteil vorgesehen ist,
• c) ein zweiter Steckverbindungsteil, der mit dem ersten Steckverbindungsteil eine Kupplung bildet, in einem Steckergehäuse angeordnet ist, das von außen abgedichtet an das obere Wandelement der prismatischen Ausnehmung in der Rückwand angesetzt ist, und wenn
• d) der Rückwandteil des Leitungsgehäuses mit dem Steckergehäuse verbunden ist.

Given the position of the connection point, a particularly compact spatial shape of the line housing can be achieved if

• a) the rear wall of the housing on its side facing away from the housing shell has a closure wall which is angled in a V-shape in a vertical sectional plane to form an outwardly open prismatic recess with a horizontal axis, the opening angle of the "V" being 90 degrees and both legs of the "V" run at an acute angle to the housing axis AA,
• b) a first plug connection part is provided in the wall element forming the upper leg of the "V",
• c) a second plug-in connection part, which forms a coupling with the first plug-in connection part, is arranged in a plug housing which is attached to the upper wall element of the prismatic recess in the rear wall in a sealed manner, and if
• d) the rear wall part of the cable housing is connected to the connector housing.

Further advantageous embodiments of the subject matter of the invention emerge from the remaining subclaims; their details are explained in more detail in connection with the detailed description.

Two exemplary embodiments of the subject matter of the invention are explained in more detail below with reference to FIGS. 1 to 19.

Figur 1

eine Seitenansicht eines ersten Ausführungsbeispiels mit einem teilweisen vertikalen Axialschnitt durch den hinteren Teil des Schutzgehäuses, das auf einer Wandkonsole befestigt ist,

Figur 2

einen Teilausschnitt von Figur 1 in vergrößertem Maßstab,

Figur 3

eine Draufsicht auf die unbestückte Rückwand in Richtung der Achse A-A in Figur 2,

Figur 4

einen Schnitt durch das Steckergehäuse entlang der Achse IV-IV in Figur 5,

Figur 5

einen Schnitt durch das Steckergehäuse entlang der Linie V-V in Figur 7,

Figur 6

eine Draufsicht auf das Steckergehäuse in Richtung des Pfeils VI in Figur 7,

Figur 7

eine Draufsicht auf das Steckergehäuse in Richtung des Pfeils VII in Figur 4,

Figur 8

einen Teilausschnitt aus Figur 5 innerhalb des Kreises VIII in vergrößertem Maßstab,

Figur 9

eine perspektivische Ansicht des Leitungsgehäuses,

Figur 10

einen Teilschnitt durch den Gegenstand von Figur 2 entlang der radialen Ebene X-X,

Figur 11

eine Unteransicht des oberen Lagerbocks,

Figur 12

eine Seitenansicht des Lagerbocks nach Figur 11,

Figur 13

einen Schnitt durch den Lagerbock nach Figur 12 entlang der Linie XIII-XIII,

Figur 14

eine Draufsicht auf den Lagerbock nach den Figuren 11 bis 13,

Figur 15

eine Draufsicht auf die Rückseite des vollständig montierten Schutzgehäuses in Richtung der Achse A-A in Figur 2,

Figur 16

einen teilweisen axialen Vertikalschnitt durch den hinteren Teil eines zweiten Ausführungsbeispiels analog Figur 2, jedoch mit einer im wesentlichen ebenen Außenseite der Rückwand,

Figur 17

eine Draufsicht auf das mit einem Steckergehäuse und einem zweiten Steckverbindungsteil baulich vereinte Leitungsgehäuse nach Figur 16,

Figur 18

eine Außenansicht der Gehäuse-Rückwand nach Figur 16, und

Figur 19

eine Unteransicht der Rückwand nach den Figuren 16 und 18 nach Abnahme des Leitungsgehäuses und mit freiliegendem ersten Steckverbindungsteil.

Show it:

Figure 1

2 shows a side view of a first exemplary embodiment with a partial vertical axial section through the rear part of the protective housing, which is fastened on a wall bracket,

Figure 2

2 shows a partial section of FIG. 1 on an enlarged scale,

Figure 3

3 shows a plan view of the bare rear wall in the direction of the axis AA in FIG. 2,

Figure 4

5 shows a section through the plug housing along the axis IV-IV in FIG. 5,

Figure 5

7 shows a section through the connector housing along the line VV in FIG. 7,

Figure 6

3 shows a plan view of the connector housing in the direction of arrow VI in FIG. 7,

Figure 7

3 shows a plan view of the connector housing in the direction of arrow VII in FIG. 4,

Figure 8

5 shows a partial section from FIG. 5 within circle VIII on an enlarged scale,

Figure 9

a perspective view of the cable housing,

Figure 10

3 shows a partial section through the object of FIG. 2 along the radial plane XX,

Figure 11

a bottom view of the upper bearing block,

Figure 12

11 shows a side view of the bearing block according to FIG. 11,

Figure 13

12 shows a section through the bearing block according to FIG. 12 along the line XIII-XIII,

Figure 14

3 shows a top view of the bearing block according to FIGS. 11 to 13,

Figure 15

2 shows a plan view of the rear of the completely assembled protective housing in the direction of the axis AA in FIG.

Figure 16

a partial axial vertical section the rear part of a second embodiment analogous to Figure 2, but with a substantially flat outside of the rear wall,

Figure 17

16 shows a plan view of the line housing according to FIG. 16, which is structurally combined with a plug housing and a second plug connection part,

Figure 18

an external view of the housing rear wall according to Figure 16, and

Figure 19

a bottom view of the rear wall according to Figures 16 and 18 after removal of the cable housing and with the exposed first connector part.

FIG. 1 shows a weather protection housing 1 for video cameras, which has a tubular housing jacket 2, which consists of a section of an extruded light metal profile closed on the circumference. The cross section is shown in its lower region in FIG. 10 and is explained in more detail in connection therewith.

The housing jacket 2 is sealed at the front and rear by a front wall 3 and a rear wall 4. The protective housing also includes a protective roof 5, which surrounds the housing shell 2 on its upper side 6 and from above on most of its two side walls 7, leaving an air gap 8 (FIG. 15). The length of the canopy 5 is chosen so that it protrudes both over the front of the front wall 3 and over the back of the rear wall 4 (Figure 1).

The protective housing 1 also includes a housing support 9, which will be explained in more detail with reference to FIG. 10. The housing support 9 is rigidly connected to the rear wall 4 as a rail over the length of the housing shell 2 and is arranged just below the underside 10 of the housing shell 2.

According to FIG. 1, the protective housing is fastened on a bearing 12, which consists of two bearing blocks 13 and 14, which are connected to one another by a tilt axis 15. The housing support 9 has a central longitudinal slot 16 and is thereby displaceable on the upper bearing block 13 in the direction of the housing axis A-A. The determination is made via clamping screws, not shown, and is made in such a way that the tilt axis 15 is as precisely as possible under the center of gravity of the fully equipped protective housing.

The lower bracket 14 is rotatably mounted about a vertical pivot axis "S" on a wall bracket 17 which is screwed to a wall 18.

The required electrical lines run in the wall bracket 17 and in cavities in the bearing blocks 13 and 14 and - starting from the bearing 12 below the housing support 9 (FIG. 10) and below the underside of the rear wall 4.

A connection point 11 is provided in the rear wall 4, which will be discussed in more detail below in connection with FIG. 2. Starting from camp 12 is up to Connection point 11 a line housing 20 is provided, which initially runs parallel to the surface of the housing shell 2, forming a first section 21a of a line channel 21 between the housing support 9 and the line housing 20. The line housing is then guided at an angle around the rear lower edge 22 of the rear wall 4 and overlaps the connection point 11 in the rear wall 4 to form a second section 21b of the line channel 21. This is done in such a way that the electrical lines 23a, 23b and 23c, starting from the bearing 12 to the connection point 11 within the line housing 20 (see also Figure 10).

As can be seen more clearly from FIG. 2 in connection with FIG. 9, the line housing 20 has a vertical center plane which runs through the housing axis A-A, that is to say coincides with the sectional plane in FIG. 2. With regard to cross sections that run perpendicular to this central plane, the housing 20 is closed on at least three circumferential sides by wall elements 20a, 20b and 20c arranged in a U-shape with respect to one another. The two wall elements 20a and 20c form the legs of the "U", the free ends of which face the housing shell 2 and the rear wall 4. The third wall element 20b forms the yoke of the "U". Because of the spatial course of the undersides of housing shell 2 and rear wall 4 and the rear of the rear wall, the length of the legs is different and graded, as can be seen from FIG. 9.

It can be seen more clearly from FIGS. 1, 2 and 9 that the wall element 20b forming the yoke is in one Section plane which coincides with said center plane, is V-shaped and forms a bottom part 24 and a rear wall part 25, the apex region 26 lying between the bottom part and the rear wall part being rounded.

The wall elements 20a and 20c forming the legs are provided along their upper, parallel edges 27 in the region of the housing shell 2 with first recesses 28 for the engagement of longitudinal ribs 29 which are arranged on the underside 10 of the housing shell 2 (see also FIG. 10).

The wall elements 20a and 20c forming the legs are provided with second recesses 30 at the free ends of the line housing 20 in the area of the housing shell 2, which recesses 30 serve for insertion into corresponding complementary recesses of the upper bearing block 13. This interaction between the line housing 20 and the upper bearing block 13 can be seen in FIG. 1; details in the design of the bearing block are discussed in greater detail in connection with FIGS. 11 to 14.

The nature of the connection point 11 is explained in more detail below in connection with FIG. 2:
The rear wall has, on its side facing away from the housing jacket 2, a closure wall 31 which forms a prismatic recess 32 open to the outside in a vertical sectional plane through the axis AA (FIG. 3), the axis of which extends horizontally. The prismatic Recess is delimited by an upper wall element 33 and by a lower wall element 34, which are arranged at an angle of 90 degrees to one another and both run at an acute angle to the housing axis AA. The wall elements 33 and 34 form the legs of a "V", and the apex line 35 of this "V" runs horizontally (FIG. 3).

The upper wall element 33 has a rectangular recess 36, in which a first plug-in connection part 37 (male part) is arranged. A second connector part 38 is fastened in a connector housing 39, which is explained in more detail with reference to FIGS. 4 to 7. The two connector parts 37 and 38 form a coupling with each other. The plug-in direction runs perpendicular to a separating joint (not specified in more detail) between the plug-in connection parts 37 and 38, or perpendicular to the upper wall element 33.

As can be seen from FIGS. 1, 2 and 15, the plug housing 39 is placed on the rear wall 4, sealed from the outside, and is screwed to the upper wall element 33 of the prismatic recess 32 with the interposition of a seal, not shown. Furthermore, the rear wall part 25 of the line housing 20 is connected to the plug housing 39, specifically via a dovetail connection 40, which is also explained in more detail below.

As can be seen from FIGS. 2 and 3, the rear wall 4 has on the side facing away from the housing jacket 2 in its upper region and on the sides a projecting edge 41 parallel to the housing axis AA and a support surface 42 running parallel to the plug-in direction of the plug connection and perpendicular to the upper wall element 33 of the prismatic recess 32 and reaching to the edge 41.

The connector housing 39 has, on the side facing away from the connector part 38, a cover plate 43 which runs parallel to the said plug-in direction and which lies congruently on the bearing surface 42. Furthermore, the cover plate 43 is provided on its outer side 43a with means for fastening the rear wall part 25 of the line housing 20, namely with a dovetail guide 40a. The dovetail guide 40a serves to insert a tongue-shaped extension 25a of the rear wall part 25, the direction of insertion of the dovetail guide 40a running in the center plane of the line housing 20. This interaction can be seen particularly clearly in FIG. 15.

It goes without saying that the plug housing 39 can only be screwed to the rear wall 4 if it has been rotated from the position shown in FIG. 4 about a vertical axis by 180 degrees into the position according to FIG. 6. This position is also shown in Figure 15.

According to FIGS. 4 to 7, the plug housing 39 has a cavity 44 inside for the cable routing. Three of these wires 45 are indicated in Figure 2. From the upper connector 37 lead 45a, of which only three are shown, to an electronic component 45b, which is an example of a power supply.

The connector housing 39 also has on its upper side, on both sides of the cavity 44, shoulder surfaces 46 with threaded bores 47 for the support and fastening of the associated connector part 38 (FIG. 2). Furthermore, the plug housing 39 has a sealing surface 48 surrounding the upper mouth of the cavity 44 for the connection to the opposite wall element 33 of the prismatic recess 32. In this sealing surface 48 there is a (rectangular) sealing groove 49 which is closed on the circumference (FIG. 7).

On its underside, the plug housing 39 has a threaded bore 50 for screwing in a gland screw connection 51, which is shown in FIG. 2. The threaded bore 50 is surrounded over part of its length by a downward-pointing collar, not specified. Furthermore, a flat stop surface 52 for two end edges 53 of the line housing 20 is arranged on the same underside outside of the said collar (see also FIG. 9). On its two outer sides, the connector housing 39 is provided with two screw channels 54, which run parallel to the direction of insertion, for the screw connection with the wall element 33 opposite the sealing surface 48. The associated threaded holes 55 are shown in Figure 3. The screw channels 56 shown in FIG. 3 serve to screw the rear wall 4 to the housing jacket 2, which is of no further importance here.

As can be seen in more detail from FIGS. 8 and 9, the upper end of the tongue-shaped extension 25a of the rear wall part 25 is connected to the dovetail guide 40a via latching elements 25b. This has complementary locking lugs 40b at the corresponding point.

FIG. 10 also shows the manner in which the line housing 20 is attached to the underside 10 of the housing jacket 2. Between the housing support 9 and the L-shaped longitudinal ribs 29 there is a parallel-walled gap on each side of the housing support 9, into which the line housing 20 is inserted with the locations at which the first recesses 28 are located. The upper tapered leg ends then abut with their longitudinal edges 27 on the lower boundary surface of the housing shell 2 between the longitudinal ribs 29, so that lateral displacement is impossible. The cable housing 20 can be clamped against the housing jacket 2 by a tension screw, not shown.

Details of the upper bearing block 13 are explained as follows with reference to FIGS. 11 to 14: The upper bearing block 13 is U-shaped with respect to a plane of symmetry through the tilt axis 15 and has an overhead flange plate 57 which forms the yoke of the "U" for the support of the housing support 9 and two lateral, parallel legs 58 with bores 59 for the tilt axis. The dashed lines in Figures 12, 13 and 14 make it clear that the edges below the flange plate 57 on the inside with recesses 60, 61 and 62 for the insertion of the complementary recesses 30 are provided at the free end of the bottom part 24 of the line housing 20. As a result, the cable housing 20 engages with its lower free end in a form-fitting manner in the bearing block 13, so that extensive sealing also takes place at this point. The bearing block 13 is clamped to the housing support 9 by screws, which are passed through the bores 63. In the released state, these screws can be displaced in the longitudinal slot 16 (FIG. 10). Elongated holes 64 in the flange plate 57 serve, for example, to lead lines (not shown here) into cavities in the housing support 9 if there is a need for this. In this case, however, a plug connection part would have to be removed from the associated line if the protective housing with the housing carrier is to be connected to the line or to be separated from it.

A second exemplary embodiment of the invention is described in FIGS. 16 to 19; the same reference numerals have been used for matching or analog components. The number 100 was added to the reference symbols for different components.

This exemplary embodiment differs from that according to FIGS. 1 to 15 essentially in that the plug-in direction of the plug connection is perpendicular to the housing axis AA. As a result, the closure wall 131 of the rear wall 104 - apart from the cooling fins 131a - can be made flat. In the lower area of this rear wall 104 there is a recess 136, the main plane of which is also perpendicular to the axis AA runs. This recess opens into the lower flat boundary surface of the rear wall 104. In the region of the opening of the recess 136 there is a first plug connection part 37, the lines or wires of which are only indicated. A cable housing 12 is attached to the underside of the housing jacket 2 and the rear wall 104, which encloses an essentially straight line channel 121. The rear part of the cable housing 120 is designed as a plug housing 139 and is formed in one piece with it. The plug housing 139 is delimited at the top by a wall element 65, in which there is a recess 66 into which a second plug connection part 38 is inserted. The fastening is carried out by means of the screws 67 on shoulder surfaces 146. The recess 66 is surrounded by a sealing groove 149 which is closed on the circumference and into which a profile seal, not shown here, is inserted. The cable housing 20 is screwed against the underside of the rear wall 104 by means of screws and corresponding screw channels 154. The parting line between this underside and the connector housing 139 runs, as shown in FIG. 16, parallel to the axis AA.

The cable housing 120 continues to the right of the plug housing 139 through a base part 144 and two side walls 120a and 120b projecting at right angles therefrom, which together form a U-shaped cross section, in which the base part 124 forms the yoke. In this area, the line housing 120 is formed analogously to that line housing 20 which is shown in FIG. 9. The analogy also applies to the engagement of the end facing away from the plug housing 139 in the upper end Bearing block 13 of the bearing 12, so that a repetition can be omitted with regard to these details. It also goes without saying that the rear end of the line housing 120 or of the plug housing 139 is flush with the closure wall 131, also with regard to the cooling fins 131a. In this context, only the upper edges 127 and the recesses 128 of the plug housing 120 are worth mentioning, which enable the engagement in the longitudinal ribs 29 or the bearing block 13.

FIG. 16 also shows a fastening surface 68 for an electronic component (e.g. power supply unit), a connecting flange 69 for fastening a device carrier (not shown here) and a plug connection 70 for the rigid connection of the rear wall 104 to the housing carrier 9.

Figure 18 shows the closed impression of the entire back of the housing. FIG. 19 also shows how the first plug connection part 37 is inserted into the recess 136. Tapped holes 71 serve to screw in the tension screws guided in the screw channels 154. Screw holes 72 are used to screw in the fastening screws for the housing support 9. The sealing surface 148 surrounding the recess 136 serves to support the profile seal held in the sealing groove 149.

In order to be able to remove the cable housing 120 downward from the position shown in FIG. 16, the entire protective housing around the bearing 12 must, of course, be loosened slightly after loosening the clamping screw connection on the tilt axis 15 Be pivoted upwards. In the exemplary embodiment according to FIGS. 1 to 15, this is not necessary because of the accessibility of the connection point 11 from the rear. With a corresponding inclination of the protective housing, it is also possible, if necessary, to remove the cable housing 120 downwards without loosening the clamp connection in the region of the bearing 12.

Claims (12)

Protective housing for optical devices, in particular weatherproof housing for video cameras of surveillance systems, with a housing jacket (2), with a housing axis AA, each with a front wall (3) and rear wall (4, 104) arranged at the respective end of the housing jacket, with one The housing support (9) located on the underside of the housing jacket for fastening the protective housing (1) to a fixed bearing (12) and with at least one electrical line (23a, 23b, 23c), which leads to a connection point (4) located in the rear wall (4). 11), characterized in that a removable line housing (20, 120) with U-shaped wall elements is provided starting from the bearing (12) to the connection point (11), which together with wall elements of the protective housing (1) a closed Line channel (21, 121) forms in which the at least one electrical line (23a, 23b, 23c) is housed and that the connection point (11) seizes. Protective housing according to claim 1, characterized in that the line housing (20) initially runs parallel to the surface of the housing jacket (2), forming a first section (21a) of the line channel (21) between the housing support (9) and line housing (20), then in at an angle around the rear lower edge (22) of the rear wall (4) and overlaps the connection point (11) located in the rear wall to form a second section (21b) of the conduit (21). Protective housing according to Claim 1, characterized in that the line housing (20, 120) has a vertical center plane which extends through the housing axis AA, and in that the line housing has at least three circumferential sides with respect to cross sections which are perpendicular to said center plane U-shaped wall elements (20a, 20b, 20c; 120a, 120b, 124) are formed, two of which (20a, 20c; 120a, 120b) form the legs, the free ends of which face the housing jacket (2), and of which the third wall element (20b, 124) forms the yoke of the "U". Protective housing according to claims 2 and 3, characterized in that the wall element (20b) forming the yoke is V-shaped in a sectional plane which coincides with the central plane and forms a base part (24) and a rear wall part (25), whereby the apex region (26) lying between the base part and the rear wall part is rounded. Protective housing according to claim 3, characterized in that the wall elements (20a, 20c; 120a, 120c) forming the legs along their upper edges (27; 127) in the area of the casing (2) are provided with first recesses (28; 128) for the engagement of longitudinal ribs (29) located on the casing (2). Protective housing according to claim 3, characterized in that the wall elements (20a, 20c; 120a, 120b) forming the legs have second recesses (30) at the free end of the line housing (20, 120) in the region of the housing jacket for overlapping by a part of the bearing (12). Protective housing according to claim 2, characterized in that a) the rear wall (4) on its side facing away from the housing jacket (2) has a closure wall (31), which is angled in a vertical sectional plane to form an outwardly open prismatic recess (32) with a horizontal axis, wherein the opening angle of the "V" is 90 degrees and both legs of the "V" are at an acute angle to the housing axis AA, b) a first plug connection part (37) is provided in the wall element (33) forming the upper leg of the "V", c) a second connector part (38), which forms a coupling with the first connector part (37), is arranged in a connector housing (39) which is sealed from the outside to the upper wall element (33) of the prismatic Recess (32) in the rear wall (4) is attached, and that d) the rear wall part (25) of the cable housing (20) is connected to the plug housing (39). Protective housing according to claim 7, characterized in that a) the rear wall (4) on the side facing away from the housing jacket (2) in its upper region has a projecting edge (41) parallel to the housing axis AA and one parallel to the plugging direction and perpendicular to the upper wall element (33) of the prismatic recess (32) has running and extending to the edge (41) bearing surface (42), b) the connector housing (39) on the side facing away from the connector part (38) is provided with a cover plate (43) running parallel to the direction of insertion, which lies congruently on the support surface (42), and that c) the cover plate (43) is provided on its outer side (43a) with means for fastening the rear wall part (25) of the line housing (20). Protective housing according to claim 8, characterized in that the means for fastening the rear wall part (25) of the line housing (20) consist of a dovetail guide (40a) for inserting a tongue-shaped extension (25a) of the rear wall part, the direction of insertion of the Dovetail guide (40a) runs in the center plane of the cable housing (20). Protective housing according to claims 1 and 6, characterized in that the bearing (12) has an upper bearing block (13) which is U-shaped in a plane of symmetry through the tilt axis (15) and which has an overhead, the yoke of the " U "forming flange plate (57) for supporting the housing support (9) and two lateral, mutually parallel legs (58) with bores (59) for the tilt axis (15), and that the edges lying below the flange plate on the inside with Recesses (60, 61, 62) for the insertion of the complementary recesses (30) are provided at the free end of the bottom part (24) of the line housing (20). Protective housing according to claim 7, characterized in that the plug housing (39) a) inside a cavity (44) for the cable routing, on its upper side on both sides of the cavity shoulder surfaces (46) with threaded bores (47) for supporting and fastening the associated plug-in connection part (38) and a sealing surface (48) surrounding the upper mouth of the cavity for the connection to the opposite wall element (33) of the prismatic recess (32), b) on its underside a threaded hole (50) for screwing in a Gland screw connection (51) and a flat stop surface (52) for two end edges (53) of the cable housing (20) and c) contains screw channels (54) running parallel to the insertion direction on its two outer sides for the screw connection with the opposite wall element (33). Protective housing according to claim 9, characterized in that the upper end of the tongue-shaped extension (25a) of the rear wall part (25) is connected to the dovetail guide (40a) via latching elements (25b).

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