Distribution cabinet

• US 20030011988A1
• Filed: 08/15/2002
• Published: 01/16/2003
• Est. Priority Date: 02/23/2000
• Status: Active Grant

• Current Assignee: Berthold Sichert Gmbh (Belden Inc.)
• Original Assignee: KRONE GmbH
• Inventors: Irmer, Gunter
• Granted Patent: US 6,657,861 B2
• Time in Patent Office: Days
• US Class Current: 361/690
• CPC Class Codes: H02B 1/013 Profiles for cabinet frames
• CPC Class Codes: H02B 1/50 Pedestal- or pad-mounted casings; Parts thereof or accessories therefor
• CPC Class Codes: H02B 1/565 for cabinets
• CPC Class Codes: H04Q 1/025 Cabinets
• CPC Class Codes: H04Q 1/035 Cooling of active equipments, e.g. air ducts
• CPC Class Codes: H04Q 1/116 lightning or EMI protection, e.g. shielding or grounding
• CPC Class Codes: H04Q 1/14 Distribution frames
• CPC Class Codes: H04Q 2201/06 Cooling arrangements
• CPC Class Codes: H04Q 2201/10 Housing details

Abstract

A distribution cabinet (1) for accommodating weak-current distribution installations, in particular for arranging outdoors, having

a base box (2),

an outer cabinet body (3) with at least one door (4),

a cabinet cover (5), and

an inner installation frame (6),

the installation frame (6) being made up of profile sections (50), of which the cross-sectional shapes has two insertion pockets (51a,b), of which the insertion directions (52a,b) run at right angles to one another.

Claims

1. A distribution cabinet (1) for accommodating weak-current distribution installations, in particular for arranging outdoors, having

a base box (2),

an outer cabinet body (3) with at least one door (4),

a cabinet cover (5), and

an inner installation frame (6),

characterized in that the installation frame (6) is made up of profile sections (50), of which the cross-sectional shapes has two insertion pockets (51a,b), of which the insertion directions (52a,b) run at right angles to one another.

2. The distribution cabinet as claimed in claim (1), characterized in that outer surfaces (53a,b) of the profile (50), said outer surfaces running parallel to the insertion directions (52a,b), are planar and continuous and merge one into the other in the external corner (54).

3. The distribution cabinet as claimed in one of the preceding claims, characterized in that, on the inside of the external corner (54), the profile (50) has a hollow chamber (55) which is continuous, as seen in cross section, and has at least one groove-like recess (56a,b).

4. The distribution cabinet as claimed in one of the preceding claims, characterized in that, on an outer surface which is directed away from the outer surfaces (53a,b), the profile has a further open pocket (57) in the form of an undercut groove, of which the insertion direction is, in particular, parallel to one of the insertion pockets (e.g. 51a), and in particular the undercuts (57a,b) are arranged on both sides, in particular in a centrally symmetrical manner, in the flanks of the pocket (57).

5. The distribution cabinet as claimed in one of the preceding claims, characterized in that correspondingly dimensioned insertion panels (58) are inserted in the insertion pockets (51a,b) of the profile sections (50), which are assembled to form the installation frame (6), with the result that the installation frame (6) completed therewith forms an inner body (60) which, to the greatest extent, is closed apart from the door side.

6. The distribution cabinet as claimed in one of the preceding claims, characterized in that the insertion panels (58a,b) consist of EMC-shielding material, in particular sheet steel or sheet aluminum, and in each case one EMC seal (59) is arranged in particular between the insertion panels (58a,b) and the base of the insertion pockets (51a,b).

7. The distribution cabinet as claimed in one of the preceding claims, characterized in that, in the case of a three-dimensional corner connection of three profile sections (50a,b,c), two profile sections (50a,b) are mitered and positioned one against the other, and connected by means of a groove nut (61) or of an angle positioned in the undercuts (57a,b) and clamped there, and the third profile section (50c) is positioned flush on said corner connection and screwed thereto by means of a clamping screw (62), the clamping screw (62) being screwed into a threaded bore (63) made in the corner of the angle or of the groove nut (61).

8. The distribution cabinet as claimed in one of the preceding claims, characterized in that remaining between the inner body (60) and the outer cabinet body (3) is an air space which is open in the top and bottom regions, in particular in the direction of the surroundings, and serves for air to rise and thus heat to be dissipated from the inside of the outer cabinet body (3).

9. The distribution cabinet as claimed in one of the preceding claims, characterized in that the distribution cabinet (1) has a top intermediate part (7) which is arranged between the top border (3) of the body (3) and the cover (5), and in particular at least the body and/or the base box (2) and/or the cover (5) and/or the at least one door (4) consist of plastic and are produced, in particular, as a plastic injection molding.

10. The distribution cabinet as claimed in claim 9, characterized in that the installation frame (6) is arranged, in the interior of the body (3), for accommodating electrical subassemblies, and in particular the installation frame (6), as seen in the transverse direction, does not have any undercuts with the body (3), with the result that it is possible for the body (3) to be raised off in the upward direction despite the installation frame (6) with all the components fastened thereon remaining on the base box (2).

11. The distribution cabinet as claimed in claim 9 or 10, characterized in that a frame-like mounting rack (9) for fastening the electrical subassemblies is arranged in a horizontally displaceable manner along the installation frame (6).

13. The assembly kit as claimed in claim 12, characterized in that the insertion panel (58a,b) is dimensioned such that, together with the installation frame (6), it forms at least one continuous outer surface as inner housing.

14. The assembly kit as claimed in claim 12 or 13, characterized in that the assembly kit comprises at least one additional part which can be arranged on the body (3), and in particular the additional part is a top intermediate part (7) which can be arranged between the top border of the body (3) and the cover (5).

15. The assembly kit or distribution cabinet as claimed in one of the preceding claims, characterized in that the profile (50) has a cross section which is constant in the longitudinal direction.

16. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that the additional part is an installation frame (6) which is arranged in the interior of the body (3) and is intended for accommodating electrical subassemblies, and in particular the installation frame (6), as seen in the transverse direction, does not have any undercuts with the body (3), with the result that it is possible for the body (3) to be raised off in the upward direction despite the installation frame (6) with all the components fastened thereon remaining on the base box (2).

17. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that the distribution cabinet (1) has a bottom intermediate part (8) which is arranged between the bottom border of the installation frame (6) and the top border of the base box (2), and in particular the top intermediate part (7) and/or the bottom intermediate part (8) consist/consists of a material which inhibits electromagnetic radiation, in particular of aluminum.

18. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that the top intermediate part (7) has at least one false floor (11) and an in particular vertically upright border (12) running all the way round the sides and, with the body (3) and cover (5) placed in position, has openings, in particular slots (13), for the ambient air to flow in and out, in particular in the border (12) above the false floor (11).

19. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that arranged on the false floor (11), in close abutment against the latter, is at least one bottom cooling structure (14), which projects downward, in the direction of the body (3), and has a large surface area, in particular with cooling ribs (16), made of a material with good thermal conductivity, in particular of aluminum, and arranged in particular at the same location as the bottom cooling body (14), but on the top side of the false floor (11), in close abutment against the false floor, is a top cooling body (15), which consists of a material with good conductivity, in particular aluminum, and has a large surface area, in particular cooling ribs, and in particular is identical to the bottom cooling body (14), and in particular the cooling ribs (16) of the top and/or bottom cooling body (15) or (14), respectively, run in the horizontal transverse direction (20) of the distribution cabinet (1).

20. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that the cooling ribs (16) of the top and/or bottom cooling body (15) or (14), respectively, run radially, as seen in plan view, and in the central region, in particular centrally in relation to the geometrical point of contact with the cooling ribs (16), an impeller (38), in particular a radial-flow impeller with blades (39), which are bent in plan view in particular, is arranged in a state in which it is mounted such that it can be rotated about an in particular vertically upright axis (40), and in particular the cooling bodies (14) and (15) extend over more than half the basic surface area of the top intermediate part (7).

21. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that the slots (13) at the transition between the top intermediate part (7) and the cover (5) are produced, by the cover being placed in position, in that, in this region, the border (12) is set back inward in certain sections in relation to the cover (5) positioned thereon, and the resulting slots (13′

) are overlapped in the horizontal direction by the cover (5).

22. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that arranged in the false floor (11) is a functional opening (17), for the insertion of a multiplicity of functional parts, for example an automatically closable functional cover (18), heat exchanger (19), fan (21), with air filter (22) and EMC filter (23), and in particular the false floor (31) has a plurality of cable through-passage openings distributed over its surface.

23. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that the bottom intermediate part (8) is of tray-like design and has a false floor (31), a peripheral body (32) and, in particular, air-outlet openings (33), and in particular the false floor (31) of the bottom intermediate part (8) has a functional opening (27), for fastening a multiplicity of functional elements therein, and in particular the false floor (31) is arranged in the bottom height region of the border (32).

24. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that the outlet openings (33) in the border (32), which is open at the bottom, are produced by the bottom intermediate part (8) being positioned on the base box (2), in that the top border of the base box (2) is set back inward at least partially in the radial direction in relation to the bottom border of the bottom intermediate part (8).

25. The distribution cabinet or assembly kit as claimed in one of the preceding claims, characterized in that the distribution cabinet (1) has EMC shielding, in relation to the main chamber in the interior of the body (3), and in particular the EMC shielding is provided in the body (3) or on the inner surfaces of the body (3) or on the outer surfaces of the installation frame (6) and, in addition, the top and bottom horizontal surfaces of the body (3) are shielded, and in particular the top horizontal shielding is effected by the top intermediate part (7) and/or the bottom horizontal shielding is effected by the bottom intermediate part (8), and in particular the bottom horizontal EMC shielding is effected by a base plate (25) made of a material which shields electromagnetic radiation and is fastened, in particular, on the body (3), and in particular the EMC shielding consists of a material addition to the plastic of the body, of a coating of the inner surfaces of the body or of a woven fabric or of metal sheets, in particular perforated metal sheets, which are fitted, in particular, on the outsides of the installation frame (6) and/or the insides of the body (3) or of the door (4), and use is made here in each case of materials which inhibit electromagnetic radiation, in particular metals.

12. An assembly kit for producing a distribution cabinet which serves for accommodating weak-current distribution installations and is to be set up in particular outdoors, having

a base box (2),

an outer cabinet body (2) with at least one door (4),

a cabinet cover (5), in particular made of plastic, in particular polycarbonate, and

an installation frame (6) for arranging within the outer cabinet body (3),

characterized in that

the cabinet body (6) can be made up of profile sections (50), which each have at least two insertion pockets (51a,b) which extend away from one another at an angle, and

of at least one insertion panel (58a,b), for insertion into the insertion pockets (51a,b) of the profile sections (50).