Control box with a frame structure

• US 5,971,511 A
• Filed: 04/21/1998
• Issued: 10/26/1999
• Est. Priority Date: 03/13/1996
• Status: Expired due to Fees

• Current Assignee: Rittal GmbH & Company KG (Friedhelm Loh, PhD)
• Original Assignee: Rittal-Werk Rudolf Loh Gmbh & Co. Kg
• Inventors: Diebel, Michael, Kuster, Frank
• Primary Examiner(s): Cuomo, Peter M.
• Assistant Examiner(s): HANSEN, JAMES ORVILLE
• Application Number:
  US09/051,647
• Time in Patent Office: 553 Days
• Field of Search: 312/265.1, 312/265.2, 312/265.3, 312/265.4, 312/257.1, 312/263, 312/326, 312/329, 312/400, 312/223.1, 312/265.5, 211/26, 211/189, 211/191
• US Class Current: 312/265.3
• CPC Class Codes: E05Y 2900/208 for metal cabinets
• CPC Class Codes: H02B 1/38 Hinged covers or doors

Abstract

A switchgear cabinet having a rack assembled from a plurality of frame legs bent at the side walls. The rack has open, vertical sides which are closed off by side walls and a rear wall fastened to facing frame legs of the rack. A cabinet door is hingedly connected to vertical frame legs of the rack front against which it is arrested in the closed position. The rear and side walls are covered by corresponding protective walls spaced apart from the rear and side walls and connected to facing vertical frame legs of the rack. The cabinet door is double-walled, an outer door wall of which is spaced apart from an inner door wall thereof and forms receptacle spaces for seals, hinges and locking elements free in the direction of vertical edges of the outer door wall. The protective walls of the side walls have beveled protective wall vertical edges which cover the free space between the protective wall of the rear wall and the receptacle space between the outer door wall and the rack.

Claims

1. In a switchgear cabinet having a rack one of assembled from a plurality of individual frame legs and formed by a plurality of individual frame legs bent off at two side walls, said rack having open, vertical sides closed off by said side walls and a rear wall, said side walls and said rear wall being fastened on facing frame legs of the rack, and a cabinet door being hinged on vertical frame legs of a front of the rack and being arrested in a closed position;

the improvement comprising;

each of the rear wall (20) and the two side walls (30) covered by a protective wall (25,

     35) spaced apart from said rear wall (20) and said side walls (30) and connected to facing vertical frame legs (11, 12, 13,

     14) of the rack (10);

the cabinet door comprising double walls, an inner door wall (40) of said double walls being disposed at a distance from an outer door wall (42) of said double walls and forming at least one receptacle space for at least one seal (44), at least one hinge (50) and at least one locking element free in a direction of a vertical edge of the outer door wall (42);

the protective walls (35) ofthe side walls (30) having beveled protective wall vertical edges whereby said protective wall vertical edges cover a free space between the protective wall (25) of the rear wall (20) and the rack (10) and the at least one receptacle space between the outer door wall (42) and the rack (10);

the rear wall (20) comprising at least one L-shaped beveled edge (21) having an end section (22) resting by way of at least one seal (23) against a sealing strip on the facing vertical frame leg (11,

     13); and

the at least one L-shaped beveled edge (21) forming a bore for each of the connecting bolts (27) of an associated said protective wall (25) and are held together with said associated protective wall (25) on the rack.

2. A switchgear cabinet in accordance with claim 1, wherein

the protective wall (25) for the rear wall (20) comprises, in an area of the beveled protective wall vertical sides, connecting bolts (27) attached on its inside, said connecting bolts (27) being screwed together with a profile side (13.4) of the facing vertical frame legs (11, 13) of the rack (10).

3. A switchgear cabinet in accordance with claim 2, wherein

the protective wall (25) of the rear wall (20) comprises a circumferential edge (26) bent inward at right angles, said circumferential edge (26) at least partially covering the L-shaped beveled edge (21) of the rear wall (20) and a sealing strip (13.1) of the facing vertical frame leg(11, 13).

4. A switchgear cabinet in accordance with claim 2, wherein

the connecting bolts (27) are provided with threaded receptacles (28) and are supported by their ends on a profile side (13.4) of the facing vertical frame leg (11, 13) of the rack (10), which is aligned parallel with the rear wall (20), and

a fastening screw (32) is inserted through a profile bore in said profile side (13.4) and is screwed into the threaded receptacle (28) of a corresponding said connecting bolt (27).

5. A switchgear cabinet in accordance with claim, 4, wherein

a frame leg profile side of the frame leg (11, 13) is aligned parallel to said profile side (13.4), spaced apart therefrom and forms at least one aligned opening (13.3).

6. A switchgear cabinet in accordance with claim 2, wherein the protective wall (25) of the rear wall (20) comprises a circumferential edge (26) bent inward at right angles, said circumferential edge (26) at least partially covering the L-shaped beveled edge (21) of the rear wall (20) and the sealing strip (13.1) of the facing vertical frame leg (11, 13).

7. A switchgear cabinet in accordance with claim 6, wherein

the connecting bolts (27) are provided with threaded receptacles (28) and are supported by their ends on a profile side (13.4) of the facing vertical frame leg (11, 13) of the rack (10), which is aligned parallel with the rear wall (20), and

a fastening screw (32) is inserted through a profile bore in said profile side (13.4) and is screwed into the threaded receptacle (28) of a corresponding said connecting bolt (27).

8. A switchgear cabinet in accordance with claim 7, wherein a frame leg profile side of the frame leg (11, 13) is aligned parallel to said profile side (13.4), spaced apart therefrom and forms at least one aligned opening (13.3).

9. A switchgear cabinet in accordance with claim 8, wherein the bevels (35.3, 35.4) of said beveled protective wall vertical edges of the protective walls (35) for the side walls (30) are connected to a profile side (13.4, 14.4) of a corresponding said facing vertical frame leg (11, 12, 13, 14).

10. A switchgear cabinet in accordance with claim 9, wherein each profile side (13.4, 14.4) is oriented vertically in respect to the side walls (30) and the associated protective walls (35).

11. A switchgear cabinet in accordance with claim 10, wherein each end section (35.4) of the protective walls (35) for the side walls (30) is inserted into the free spaces between the protective wall (25) for the rear wall (20) and the rack (10), and into the receptacle spaces between the outer door wall (42) and the rack (10).

12. A switchgear cabinet in accordance with claim 11, wherein the inner door wall (40) is supported by a beveled inner door wall edge (41) on an inside of the outer door wall (42) and is connected to said outer door wall (42).

13. A switchgear cabinet in accordance with claim 11, wherein

the inner door wall (40) comprises a twice beveled inner door wall edge (41, 45) an end section (45) of which is connected to an inside of the outer door wall (42), and

the end section (45) extends to an outer door wall edge (43) of the outer door wall (42).

14. A switchgear cabinet in accordance with claim 13, wherein the rear wall (20) and an associated said protective wall (25) form a unit which is constructed identical to the double-walled cabinet door comprising the inner door wall (40) and the outer door wall (42).

15. A switchgear cabinet in accordance with claim 14, wherein the protective walls (25, 35) and the outer door wall (42) comprise an additional protective surface layer, and the rack (10), the rear wall (20), the side walls (30) and the inner door wall (40) comprise electrically conducting surfaces.

16. A switchgear cabinet in accordance with claim 15, wherein an underside of the rack (10) is connected to a base.

17. A switchgear cabinet in accordance with claim 16, wherein an additional double-walled housing is fastened to a top of said switchgear cabinet.

18. A switchgear cabinet in accordance with claim 1, wherein

a bevel (35.3, 35.4) of said beveled protective wall vertical edges of the protective walls (35) for the side walls (30) is connected to a profile side (13.4, 14.4) of a corresponding said facing vertical frame leg (11, 12, 13, 14).

19. A switchgear cabinet in accordance with claim 18, wherein

each profile side (13.4, 14.4) is oriented vertically in respect to the side walls (30) and the associated protective walls (35).

20. A switchgear cabinet in accordance with claim 18, wherein

each end section (35.4) of the protective walls (35) for the side walls (30) is inserted into the free spaces between the protective wall (25) for the rear wall (20) and the rack (10), and into the receptacle spaces between the outer door wall (42) and the rack (10).

21. A switchgear cabinet in accordance with claim 1, wherein

the inner door wall (40) is supported by a beveled inner door wall edge (41) on an inside of the outer door wall (42) and is connected to said outer door wall (42).

22. A switchgear cabinet in accordance with claim 1, wherein

the inner door wall (40) comprises a twice beveled inner door wall edge (41.45) an end section (45) of which is connected to an inside of the outer door wall (42), and

the end section (45) extends to an outer door wall edge (43) of the outer door wall (42).

23. A switchgear cabinet in accordance with claim 1, wherein

the rear wall (20) and an associated said protective wall (25) form a unit which is constructed identical to the double-walled cabinet door comprising the inner door wall (40) and the outer door wall (42).

24. A switchgear cabinet in accordance with claim 1, wherein

the protective walls (25, 35) and the outer door wall (42) comprise an additional protective surface layer, and the rack (10), the rear wall (20), the side walls (30) and the inner door wall (40) comprise electrically conducting surfaces.

25. A switchgear cabinet in accordance with claim 1, wherein

an underside of the rack (10) is connected to a base.

26. A switchgear cabinet in accordance with claim 1, wherein

an additional double-walled housing is fastened to a top of said switchgear cabinet.