WO2007104373A1

WO2007104373A1 - Case

Info

Publication number: WO2007104373A1
Application number: PCT/EP2007/000026
Authority: WO
Inventors: Gerhard Bumeder; Josef Knab; Alexander Prinz; Siegfried Schneiderbauer; Werner Spateneder
Original assignee: Knürr AG
Priority date: 2006-03-16
Filing date: 2007-01-03
Publication date: 2007-09-20
Also published as: EP1994617A1; DE202006004211U1

Abstract

The invention relates to a case for accommodating electrical and electronic devices and assemblies, in particular a mobile radio case. In order to provide a case having a self-supporting unit, which has the required stability and ability to withstand earthquakes and makes it possible to reduce the individual parts and material thicknesses as well as allows for standardized manufacture, at least the side walls, which, as do a base and an upper cover, consist of metal sheets which are bent back a plurality of times and are connected by means of a welded joint to form a self-supporting unit, have a reinforced bent-back portion, which points into the case interior and is integrated in the manufacture of the side walls.

Description

cabinet

The invention relates to a cabinet for receiving electrical and electronic devices and assemblies, in particular a mobile phone cabinet, according to the preamble of claim 1.

Device and network cabinets and especially mobile cabinets must meet the ever-increasing demands in terms of load capacity, EMC shielding and an earthquake-proof design with the lowest possible manufacturing costs.

From US-PS-5, 975, 315 a telecommunications cabinet with a base part, two side parts and an upper cover member is known, which consist of multiple bent steel sheets and are welded together. An earthquake-proof construction is to be achieved by additional devices which connect the preformed and prestressed base part to a clamping surface.

The earthquake-proof housing of US-PS-5, 979, 672 also has multiple bent or corrugated side parts, and the base part and the top cover are corrugated or bent in the same way.

The telecommunications cabinet described in US Pat. No. 6,202,860 Bl, which likewise corrugated or multiple bent Side parts, base part and top cover has, is provided with additional mounting elements having mounting holes and are releasably secured to the side panels.

From DE 103 14 200 B4 a telecommunications cabinet with side walls, a rear wall, a door, a bottom and a cover is known in which the side walls form a self-supporting unit with the bottom and the cover. The side walls are connected in connection areas by a plurality of compression-compression connections, which are designed to be electrically conductive for EMC shielding.

The known cabinets do not meet the concepts, which provide for a reduction of the individual parts, reduction of the material thicknesses, uniform joining or assembly processes and efficient production technologies, not to the required extent.

The invention is based on the invention to provide a cabinet with a self-supporting unit, which has the required stability and earthquake resistance and allows a reduction of the individual parts and material thicknesses and a unified manufacturing.

According to the invention the object is achieved by the features of claim 1. Advantageous and advantageous embodiments are contained in the subclaims and in the description of the figures.

A basic idea of the invention is to provide each of the side walls of the cabinet with a stiffening rebate, wherein the stiffening rebate inwardly in the Cabinet interior is directed and integrated into the production of the side walls.

The required stability and torsional rigidity of the side walls is ensured in a particularly advantageous manner if the stiffening bevels extend over the entire height of the side walls and are U-shaped in cross-section.

It is advantageous that the stiffening edging integrated in the side walls is formed centrally or off-center in the side walls and is provided with fastening bores, for example 19 "fastening bores, at least in a front U-leg Fixing unnecessary, and a reduction of individual parts is achieved.

The U-shaped Versteifungsabkantung of the side walls is formed with relatively short U-legs, which are arranged on the front and back, as well as with a relatively wide connecting leg. The short U-legs and the connecting leg are formed by a 90 ° -Abkantung. Advantageously, a U-shaped stiffening edging, in which the length of the short U-legs and the connecting legs satisfy a ratio of about 1: 3 to 4.

The floor, which, like the two side walls and a top cover, can be made of sheet metal blank, is also provided with a stiffening edging. This stiffening rebate runs horizontally and connects the stiffening edges of the right and left side wall. In this way, a U-shaped stiffening frame in the bottom and in the two side walls is formed by the Versteifungsabkantungen, which ensures a very good basic stability. The welded joints between the side walls and the floor, and thus also between the stiffening baffles, create a stable, torsionally rigid knot that meets the high requirements for earthquake resistance (Beil-core Zone4).

The bottom and the side walls as well as the top cover can be manufactured uniformly by a stamping-bending process, whereby in each case a blank can be assumed. It is particularly advantageous that the stiffening edgings in the floor and in the two side walls can be integrated into the production process.

The side walls can also be manufactured by roll forming and subsequent cutting to length.

The top cover is relatively simple and welded to the two side walls as well as to the bottom to a stable, torsionally rigid base frame.

At the front and rear, the side walls, bottom and top cover have bends or bends and an EMC channel. The EMC channel is designed to receive an IP / EMC seal and is kept free of paint. The EMC channel may advantageously have a width of about 10 mm and a depth of about 3 mm. This has the advantage that a relatively large usable area of more than 80% is available, which can be used, for example, customer-specific for the installation of accessories.

The inwardly directed, U-shaped stiffening baffles of the sidewalls and floor form outboard channels. At least the vertical channels of the side walls can be used for cable routing. Conveniently, this channel with a cover, such as a diaphragm off, be covered. In cabinet juxtaposition these outer channels are particularly advantageous for cable management, and a channel cover is particularly recommended for each outer cabinet of a row of cabinets.

The top cover, which may be formed as a relatively simple cover sheet may be provided for receiving custom equipment and perforations, hat rails, plug outbreaks and outbreaks for filters and the like. A front door can be hinged by means of hinges on the corresponding side wall or on the front edge of the side wall and lies in the closed position on the circumferential IP / EMC gasket. A rear door can be fixed in the same way, while a rear wall can be fastened, for example, in the region of the rear edges of the side walls, the bottom and the top cover by means of screw fastening.

It is advantageous that the side walls, the bottom and the top cover can be made of sheet steel blanks with a thickness of 1.5 mm or even 1.0 mm. The reduced material thickness, together with the reduced parts and uniform manufacturing and assembly process ensures an extremely efficient production with high stability and earthquake resistance of the cabinet.

The invention will be further explained below with reference to a description of the figures. In this show:

Fig. 1 is a perspective view of the cabinet according to the invention, but without front door and rear wall or rear door; Fig. 2 is a partial enlargement according to arrow II in Fig. 1;

Fig. 3 is a partial enlargement according to arrow III in Fig. 1;

Fig. 4 is a plan view of a side wall of the cabinet according to the invention;

Fig. 5 is a horizontal section along line V-V in Fig. 4;

Fig. 6 is a plan view of the bottom of the cabinet according to the invention;

Fig. 7 is a horizontal section along line VII-VII of Fig. 6;

Fig. 8 is a view of the underside of the upper cover and

9 is a horizontal section along line IX-IX in Fig. 8.

The cabinet shown in Fig. 1 is provided in particular as a mobile radio cabinet and has a bottom 3, two side walls 4, 5 and an upper cover 6, which are connected by means of welded joints 11 to a self-supporting unit 2. A front and rear door or a rear wall, which together with the self-supporting unit 2 enclose a cabinet interior 12, are not shown.

The bottom 3, the top cover 6 and the two side walls 4, 5 are front and back with bends 8 and an EMC Channel 9 is provided, in which an EMC seal is arranged (not shown).

The front and rear folds 8 and the EMC channel 9 go from the enlargement of Fig. 2 and from the cross section shown in Fig. 5 of a side wall 4, 5, the cross-section shown in Fig. 7 of the bottom 3 and in FIG 9 shown cross section of the upper cover 6. After joining the two side walls 4, 5 with the bottom 3 and the top cover 6 by welding a circumferential EMC channel 9 is formed for an IP / EMC seal, whereby the required sealing and EMC shielding of the cabinet is ensured.

The required stability and earthquake resistance is achieved in addition to the front and back bends 8 substantially stiffening bevels 14, 15 in the side walls 4, 5 and a stiffening 13 in the bottom 3, which form a U-shaped stiffening frame 10. The upper cover 22 is simpler and has a flat top surface 22 without stiffening rebate.

From Fig. 1 and from the cross-sections of Figs. 5 and 7 it is apparent that the Versteifungsabkantungen 14, 15 of the side walls 4, 5, which extend over the entire height of the side walls 4, 5, and the bottom-side Versteifungsabkantung 13 in the bottom 3, which runs horizontally between the stiffening edgings 14, 15 of the side walls 4, 5, is U-shaped and directed inward toward the cabinet interior 12. The vertical, U-shaped reinforcing bends 14, 15 and the bottom reinforcing bump 13 have relatively short U-legs 16, 17 on the vertical reinforcing bends 14, 15 and 26, 27 on the bottom reinforcing rebate 13 and a relatively wide connecting Leg 18 on the vertical Versteifungsabkantung 14, 15 and 28 on the bottom stiffening rebate 13 on. The connecting limbs 18 of the vertical stiffening edges 14, 15 are of the same width as the connecting leg 28 of the bottom stiffening rebate 13, while the front and rear short U legs 16, 17 of the vertical stiffening edgings 14, 15 of the side walls 4, 5 wider than the front and rear legs 26, 27 of the bottom stiffening rebate 13 are formed. Reference is made to FIGS. 5 and 7.

At least in the front U-legs of the vertical stiffening bends 14, 15 of the side walls 4, 5 are formed mounting holes 19, for example 19 "mounting holes, which are integrated into the manufacture of the sidewalls 4, 5 from a blank Parts reduced, and there is no additional angle or an additional vertical profile with the mounting holes required.

By inwardly directed, U-shaped Versteifungsabkantung 14, 15 in the right and left side wall 4, 5, an outer-side channel 20 is formed in each case, which can be advantageously used for cable routing. In the region of this channel 20, the connecting leg 18 extends beyond the bottom-side channel 20 (see FIGS. 1 and 4).

Fig. 1 shows a channel cover 21, which is U-shaped complementary to the outside channel 20 of the side walls 4, 5, so that it can be covered in each case.

The enlarged sections of the cabinet according to FIG. 1 in FIGS. 2 and 3 show the individual parts connected by welding, wherein in FIG. 3 the left side wall 5 with the stiffening Fungsabkantung 15, the associated front U-leg 16 and the fastening holes 19 formed therein and the VerbindungsSchenkel 18 are shown. The connecting leg 18 is welded to the adjoining connecting leg 28 of the bottom stiffening rebate 13. The corresponding design of the bottom 3 is shown in FIG. 6. The front U-leg 26 of the base-side stiffening edge 13 extends to the side wall 5 and is connected to this and the front U-leg 16.

2 shows the front Mehrfachabkantantungen 8 and the EMC channel 9 in the region of the corner joint of the left side wall 5 and the bottom 3. Fig. 2 illustrates the circumferential EMC channel 9, in which a corresponding seal is arranged (not shown), at which a door (not shown) abuts in the closed state.

4 and 5 show the left side wall 5 and the corresponding design of the front and rear multiple folds 8 and the arrangement and design of the stiffening folded edge 15, which is arranged off-center. The right side wall 4 is formed in mirror image

Fig. 6 and 7 relate to the bottom 3 with the front and back Mehrfachabkantungen 8 and the EMC channel 9 and the bottom stiffening rebate 13 with a right and a left recess 25 in the region of the connecting leg 28. These recesses 25 serve to accommodate the Verstei - Fung edgings 14, 15 of the right and left side wall 4, 5.

The upper cover 6 with the front and rear multiple folds 8 and the EMC channel 9 is shown in FIGS. 8 and 9. The upper cover 6 has a flat cover surface 22 and is therefore relatively simple. The upper cover 6 may be formed in particular as an EMI panel.

The cabinet according to the invention with its stable and torsionally rigid self-supporting unit 2 has a cabinet interior, which, based on the base, an 80% occupancy and use allowed. Together with the high stability, the use of a steel sheet with the thickness of 1.0 mm or 1.5 mm, the rational production due to the reduced number of individual parts, a cabinet can be provided, which corresponds to the new mobile communication concept and extremely cost-effective is.

Claims

1. cabinet for receiving electrical and electronic equipment and assemblies, in particular mobile radio cabinet, with a bottom (3), two side walls (4, 5) and an upper cover (6), each consisting of a multi-folded metal sheet and by means of welded joints ( 11) are connected to a self-supporting unit (2), characterized in that the side walls (4, 5) each have a Versteifungsab- edging (14, 15) which directed into the cabinet interior (12) and in the production of the side walls ( 4, 5) are integrated.

2. Cabinet according to claim 1, characterized in that the stiffening edgings (14, 15) each extend over the entire height of the side walls (4, 5) and are U-shaped in cross-section.

3. Cabinet according to claim 1 or 2, characterized in that the bottom (3) has a bottom stiffening Aban- tion (13), which is corresponding to the Versteifungsabkantungen (14, 15) of the side walls (4, 5) is formed and the Versteifungsabkantungen (14, 15) the Side walls (4, 5) to form a U-shaped stiffening frame (10) connects.

4. Cabinet according to one of the preceding claims, characterized in that the stiffening edgings (13, 14, 15) are formed centrally or off-center in the bottom (3) or in the side walls (4, 5).

5. Cabinet according to one of the preceding claims, characterized in that the bottom stiffening edging (13), which extends over the width of the bottom (3), is integrated into the production of the bottom (3).

6. Cabinet according to one of the preceding claims, characterized in that the bottom (3) with the base-side stiffening edging (13) is produced by a stamping-bending process from a blank.

7. Cabinet according to one of the preceding claims, characterized in that the side walls (4, 5) are formed with the Versteifungsabkantungen (14, 15) by a stamping-bending process or by roll forming and cutting to length.

8. Cabinet according to one of the preceding claims, characterized in that the Versteifungsabkantungen (14, 15) of the side walls (4, 5) and the bottom-side Versteifungsabkantung (13) relatively short U-legs, which as the front legs (16, 26) and rear legs (17, 27) arranged are, and have a relatively wide connecting leg (18, 28).

9. Cabinet according to one of the preceding claims, characterized in that at least in the front legs (16) of the Versteifungsabkantungen (14, 15) of the side walls (4, 5) mounting holes, such as 19 "-fixing holes are formed, and that their training in the manufacturing process of the side walls (4, 5) is integrated.

10. Cabinet according to one of the preceding claims, characterized in that it e e e n e e c e s that the inwardly directed U-shaped stiffening edgings (13, 14, 15) form an outside channel (20), in particular cable channel.

11. Cabinet according to one of the preceding claims, characterized in that the outside channels (20) of the Versteifungsabkantungen (14, 15) of the side walls (4, 5) are covered with a channel cover (21), for example a diaphragm.

12. Cabinet according to one of the preceding claims, characterized in that the bottom (3), the side walls (4, 5) and the top cover (6) front and back bends (8) and an EMC channel (9) , which is designed to receive an IP / EMC seal.

13. A cabinet according to one of the preceding claims, characterized in that the top cover (6) is made of a sheet metal blank by a stamping and bending process and has a flat top surface (22).

14. Cabinet according to one of the preceding claims, characterized in that e e n e c e s e s that the upper cover (6) as an EMI panel and for receiving filters, plugs and the like is formed.