WO2003030322A1

WO2003030322A1 - Base for a control box

Info

Publication number: WO2003030322A1
Application number: PCT/EP2002/010940
Authority: WO
Inventors: Heine Altena
Original assignee: Eldon Holding Ab
Priority date: 2001-09-28
Filing date: 2002-09-30
Publication date: 2003-04-10
Also published as: DE10147925A1; US20050056758A1; EP1430579A1

Abstract

The invention relates to a base for a control box comprising four corner elements (1) which are interconnected by means of two parallel longitudinal panels (6, 7) and two parallel transversal elements (13, 14). At least one transversal element (14) is embodied as a profiled rail which extends between the lower and/or upper sections of two adjacent corner elements (1) and comprises tracks of punched holes. Said rail comprises end sections (20, 21) which extend on both sides on the outer surface and in the inner space of the corner elements.

Description

Base for a control cabinet

The invention relates to a base for a control cabinet with four corner elements, which are connected to one another via two parallel diaphragms and two transverse elements arranged parallel to one another.

Bases of the known type serve primarily to create a space under the control cabinet in which, among other things, the wiring of the cabinet can be arranged. This is particularly important when a number of switch cabinets are to be arranged next to one another, so that the individual switch cabinets can be cabled to one another in the space created by the base.

In the known bases of this type, a frame of the control cabinet is usually screwed to the corner pieces of the base, whereas the longitudinal panels and transverse elements only serve as a cover, but do not have a supporting role. The longitudinal panels and transverse elements are either screwed from the interior of the corner pieces or on the outside thereof to the corner piece.

If control cabinets are to be installed in a row, it is necessary to subsequently remove the cross panels of the base in order to connect the control cabinets to one another or to enable wiring. If the transverse elements are attached to the corner pieces from the inside, the removal of the same is often very complex since the base of the control cabinets has to be removed in order to ensure access to the screws. If the cross elements are attached from the outside, it is necessary to remove them before placing the switch cabinets next to each other, since it is no longer possible to subsequently loosen the cross elements in the joint area between the switch cabinets. Due to the considerable weight of the control cabinets, however, when the control cabinets are joined together, the corner pieces can be displaced slightly, as a result of which exact positioning of the corner pieces of the adjacent control cabinets relative to one another is no longer easily guaranteed. At the same time, stability problems of the base can occur. In German utility model 84 10203 it is therefore proposed to provide two transverse diaphragms arranged one above the other instead of a continuous transverse diaphragm, each of which is connected to the corner pieces from the inside via angled side regions. In the application, the cross panels of a switch cabinet arranged in a switch cabinet row can be released without having to change the switch cabinet row. For this purpose, however, it is necessary to remove the base plate of the control cabinet in order to get to the interior of the base and from there to remove the screw connection between the corner pieces and at least one of the two cross elements arranged one above the other.

In order to detach the base plate, however, it is necessary to remove all of the mounting plates from the control cabinet, so that it must then be reassembled. This increases the assembly costs considerably.

A simplification of access to the base is known from DE 42 05443 in that access to the corner piece is made possible by removing the longitudinal panel or a region of the longitudinal panel. The interior of the base is therefore possible from the outside without having to intervene in the control cabinet itself. If access to the interior of the base has been created, the screws fixing the cross panel can be loosened. With this method, however, a complete cross panel is used again, problems often arise when subsequently removing the cross panel, since it cannot be easily removed from its position, so it is advisable to remove the cross panel before the control cabinets are pushed together.

It is therefore the object of the invention to provide a base for a control cabinet of the type mentioned at the outset, with which the problems known from the prior art are overcome.

For a base of the known type, this object is achieved in that at least one cross element as a pro- cess having rows of holes extending between the lower and / or upper sections of two adjacent corner elements. Filschiene is formed, which has on both sides at the same time on the outside and in the interior of the corner element extending end portions.

Since the transverse elements designed according to the invention do not extend over the entire height of the corner pieces, but only over a certain area, they can be used particularly advantageously with control cabinets positioned next to one another. On the one hand, this ensures the stability of the base and the positioning of the corner pieces with respect to one another, since it is no longer necessary to remove the cross elements, so that the cabling can also be easily and easily laid over the cross elements.

Since the end sections of the transverse elements extend both into the interior of the corner pieces and along the outside thereof, it is possible to significantly increase the stability of the base.

According to a preferred embodiment, it can be provided that the profile rail is U-shaped in cross-section, the U-legs extending parallel to the floor and with at least one of the U-legs a kink surface towards the other U-leg and parallel is angled to the base area. The design of the cross element as a U-profile has proven particularly useful in terms of its stability. There is also the option of arranging cables within the U-profile.

Furthermore, it can be provided that each U-leg of the cross element has at least one row of holes. This makes it possible to simply attach further components to the cross element or to connect a plurality of adjacent transverse profile rails to one another.

The width of the base region of the profile rail can advantageously correspond to approximately one third of the height of the corner element. This ensures, on the one hand, that the base is sufficiently stable and, at the same time, sufficient space can be made available between two adjoining switch cabinets in the base area in order to ensure cabling, etc. here. According to a further embodiment, it can be provided that both the base region and the kink surface of the U-leg are extended on both sides beyond the profile rail and extend as the end sections on the outside or into the interior of the corner element. By extending the base region of the profile rail, which extends along the outside of the corner piece, a sufficient contact surface of the cross element on the corner piece is achieved and thus a secure hold is ensured. At the same time, the kink surface extending into the interior of the corner element serves as additional stabilization.

It can be provided here that the extended base region arranged on the outside of the corner pieces has projections which extend over a predetermined section over the outside of the corner pieces. In this way, the contact surface on the outside of the corner pieces is enlarged and an even better fixation is achieved.

Advantageously, at least one passage opening can be provided in the extended base area and / or protrusion of the transverse elements arranged on the outside of the corner pieces. As a result, the cross element can simply be screwed to the corner element.

According to a further preferred embodiment, each corner element of the base can have a base and cover surface and two longitudinal surfaces extending between them. The corner element is thus formed by only one frame, and in this way allows easy access to the interior of the base even when installed.

The corner elements can furthermore have a front side which has a substantially rectangular opening, this opening corresponding to at least half of the front side. The stability of the corner pieces is significantly increased by the additional side. According to another embodiment, the longitudinal surface facing away from the interior of the base in the installed state can have a stiffening surface angled at right angles to the rear on an edge extending parallel to the rear.

In this embodiment, the stiffening surface takes over the task of the back and thus serves for additional stabilization.

The stiffening surfaces and the opening formed on the front side can advantageously be opposite one another. This feature in turn ensures stability since the open areas of the front and back are not opposite each other.

Another embodiment can provide that the stiffening surface arranged on the rear side has a slot-shaped recess in the area adjacent to the cover and / or base surface, which runs parallel to the longitudinal edge of the corner piece. In the assembled state, the end sections of the cross element extending into the interior of the corner piece are inserted into these slot-shaped recesses.

According to a further embodiment it can be provided that the longitudinal surfaces of the corner elements facing one another in the installed state have essentially rectangular punched-out sections which are angled parallel to the front surface of the corner piece. The angled punching areas are preferably provided with through openings.

This provides an additional fastening surface on the corner piece, which can be used in particular for fastening the longitudinal panels. At the same time, the manufacture of the corner piece is simplified since no additional part has to be attached to the corner piece.

Furthermore, it can be provided that the bottom or top surface of each corner piece has at least one passage opening. These through openings serve to fasten the base to the control cabinet or the base to the floor. According to a further preferred embodiment, it can be provided that the longitudinal panel is constructed in three parts, a longitudinal panel section between the corner elements extending beyond the stiffening surfaces or up to the passage openings and two essentially identical covering elements placed on the open areas of the front surfaces of the corner pieces are.

In this way, easier access to the base of the base is ensured after the switch cabinets have been set up, since it is not necessary to unscrew the entire longitudinal panel, but only the sections covering the open areas of the corner pieces.

The cover sections are advantageously plugged on. This type of attachment is particularly simple.

The invention is explained in more detail below on the basis of an exemplary embodiment which is illustrated in the drawing. It shows:

1 is a three-dimensional view of an assembled base,

Fig. 2 is a three-dimensional view of a section of the base from the inside and

Fig. 3 is a three-dimensional view of two bases arranged side by side and

Fig. 4 is an exploded view of a base according to another embodiment.

The base shown in FIG. 1 comprises four identically designed corner elements 1 arranged at the corners of the base. In detail, each corner element 1 has a base 2 and cover surface 3, as well as two longitudinal surfaces 4, 5 extending between them individual surfaces are arranged at right angles to each other and form an open frame. In the assembled state, the corner pieces are arranged in such a way that the longitudinal surfaces of the two adjacent hard corner pieces are facing each other, which are further apart. In the installed state, this side is covered by the longitudinal panels 6, 7.

The bottom and top surface is longer than each longitudinal surface 4, 5, so that the corner piece is wider than it is high.

On the side of the corner piece 1 which faces away from the interior of the base in the installed state, the front side 9 extends between the bottom and top surfaces and between the longitudinal surfaces 4, 5. The front side 9 is penetrated by an essentially square opening 28 which is approximately the same length or height of the longitudinal surfaces 4, 5, so that the opening 28 is larger than the remaining surface of the front side 9. The opening 28 is arranged on the edge of the front side facing the longitudinal surface 4 in such a way that on the cover and base surfaces as well A web area remains on the longitudinal surface 4 facing edges of the opening. The remaining surface of the front 9 faces the longitudinal surface 5.

The longitudinal surface 4, that is to say the surface facing away from the interior of the base in the installed state, has a stiffening surface 8 on the edge facing the rear of the corner element 1, which is angled at right angles from the longitudinal surface to the rear. Here, the stiffening surface 4 is formed in one piece with the stiffening surface 8 and this stiffening surface only covers the smaller part of the previously open back. The stiffening surface 8 is aligned to the front in such a way that it lies opposite the opening 28.

The side surface 5 lying in the interior of the base in the installed state also has a rectangular punching area 10 which is punched out on three sides and is angled on the longitudinal edge of the longitudinal surface in one plane with the stiffening surface 9. This punching area preferably has a passage opening, by means of which the longitudinal panel 7, 6 can simply be screwed on in the finished state. The punched-out area 10 only comprises a section of the longitudinal surface 5, so that the stability of the corner piece is not impaired. The stiffening surface 8 located in the installed state on the back of each corner piece 1 has a slot-shaped recess 11, 11 'in the upper and lower area.

Furthermore, the top and bottom surfaces of the corner piece 1 each have two through openings, by means of which the corner pieces can be attached to the control cabinet or the floor. Since only a portion of the back of each corner piece is covered by the stiffening surface 8, easy access to the corner piece or the interior of the base is possible from the outside, even after the base has been fastened to the control cabinet. This ensures easy access to the interior even after the control cabinet or a control cabinet row has been set up, so that subsequent cabling can be carried out without problems.

In the assembled state, the areas between the corner pieces 1 are covered by longitudinal panels 6 and 7 and by transverse elements 13, 14. The longitudinal diaphragms 6, 7 are designed identically to one another, whereas the transverse elements 13, 14 can be designed differently, depending on whether the control cabinet is to be built in a row or alone. The base shown in FIG. 1 is a base for a control cabinet, which is to be set up as a corner cabinet in a row of control cabinets, an example of two bases built next to one another is shown in FIG. 13. The cross element 13 is therefore designed as a cover element corresponding to the longitudinal diaphragms 6, 7, and performs corresponding functions, i.e. serves as an optical element and prevents e.g. that dirt penetrates into the plinth space. The structure of the longitudinal diaphragms 6, 7 and the transverse element 13 is described below.

The cross element 14 is covered in the assembled state, as shown in FIG. 3, for example, by the next control cabinet, and therefore does not have to perform any covering functions. As shown in FIGS. 1 and 2, the cross member 14 is designed as a profile rail with a U-shaped cross section, the two U-legs 15, 16 each serving as the bottom and top surface of the profile rail. The base region 17 of the profile rail of the cross element 14 extends parallel to the longitudinal sides 4 of the corner pieces 1 facing away from the interior of the base. Both U-legs 15, 16 point a row of holes which enables the user to connect components to the cross element or to connect two correspondingly designed cross elements 14 arranged next to one another in a simple manner.

On the edge of each U-leg 15, 16 facing away from the base region 17, kink webs 18, 19 are arranged which extend at right angles from the U-legs 15, 16 and parallel to one another in the base region 17. The buckling webs 18, 19 are preferably produced in one piece with the U-legs by simple bending.

In the assembled state, the region of the cross element 14, which is designed as a profile rail, extends between the two opposite corner elements 1. Here, the end faces of the U-legs 15, 16 extend in the installed state in the region of the stiffening surfaces 8. The cross element 14 is integral with the Profile rail formed end portions 20 connected to the corner pieces 1. The end sections 20 are formed on both sides of the profile rail. Essentially, the end sections 20 comprise a surface section 21 which is designed as an extension of the base region 17 of the profile rail and extends over the entire width of the longitudinal surfaces 4 of the corner pieces 1. As already mentioned, the surface sections 21 correspond approximately to the base region 17 and also have a projection which is formed in one piece with the surface section 21 and extends beyond this to approximately half the height of the side surface 4. A passage opening is formed in the projection 22, which enables the cross element to be connected to the corner piece 1.

As is particularly clear from Fig. 2, the kink web 19 extends on both sides beyond the profile rail into the interior of the corner piece. For this purpose, the stiffening surface 8 of the corner piece has a slot-shaped extension 11, 11 ^' in the bottom area, into which the extension of the buckling web is inserted. In order to facilitate insertion, the bottom surface of the corner piece can also be provided with a corresponding slot-shaped extension 11, 11 ^' .

The combination of the surface section 21 with the projection on the one hand provides a wide contact surface for the cross element 14, and at the same time an additional fixation in the interior of the corner piece 1 achieved by extending the buckling webs 19.

In this case, it is also possible to extend the adjacent U-leg 16 into the corner piece in addition to the buckling web, in order to facilitate insertion. In this case, however, it is necessary to make minor changes to the corner piece, e.g. by providing further recesses.

If several switch cabinets that have already been provided with a base are to be arranged next to one another in use, it is first possible to use a conventional cross element, e.g. trained to remove cross member 13, and instead to arrange a cross member 14. Here, as shown in FIG. 3, two switch cabinets arranged next to one another each have a transverse element 14, which then e.g. are simply connected to one another via clamping elements which reach around the U-legs 15.

The longitudinal legs 6, 7 and the transverse element 13 are each designed as cover plates which have reinforcing webs 23, 24 angled at right angles on their upper and lower edges. These reinforcing webs 23, 24 extend in the installed state into the interior of the base and are in each case on the longitudinal surfaces of the corner pieces 1 in the case of the longitudinal panels and on the stiffening surfaces 8 in the case of the cross element 13.

Here, the reinforcing webs I23, 24 only extend over the area arranged between the corner pieces, whereas the cover surface extends at least partially beyond the corner pieces 1. Here, the cross member 13 is formed such that the cover surface extends over the entire corner piece and ends with this. The cross member 13 is then connected to the corner pieces 1 by screws.

In contrast to the cross element 13, the longitudinal diaphragms 6, 7 do not extend completely over the corner pieces 1, but only up to and over the entire front face 9, so that the open part of the front face of each corner piece 1 continues remains openly accessible. The longitudinal diaphragms 6, 7 are also fastened to the punched-out areas 10 by means of screws. The open areas of the front sides of the corner pieces 1 are then covered by cover plates 26. The cover plates 26 are formed on their rear side with four latching elements 27 which engage in an edge section provided on the front of the corner pieces.

The cover plates 26 enable quick access to the interior of the base, since the entire cover plate does not have to be unscrewed, but only one cover plate has to be removed.

The structure of the base is again shown in detail in FIG. 4 for a free-standing control cabinet as an exploded view. In particular, the attachment of the longitudinal diaphragms 6, 7 is shown in detail.

Claims

Expectations

1. Base for a control cabinet with four corner elements (1), which are connected to one another via two longitudinal panels (7, 8) running parallel to one another and two transverse elements (13, 14) arranged parallel to one another, characterized in that at least one transverse element (14) is designed as a profile rail which extends between the lower and / or upper sections of two adjacent corner elements (1) and has rows of holes and which on both sides has end sections extending on the outside and into the interior of the corner elements (1).

2. Base according to claim 1, characterized in that the profile rail is U-shaped in cross-section, the U-legs (15, 16) extending parallel to the floor and wherein at least one of the U-legs (16) Kink surface (18, 19) is angled towards the other U-leg (15) and parallel to the base region (17).

3. Base according to claim 2, characterized in that each U-leg (15, 16) has at least one row of holes.

4. Base according to claim 2 or 3, characterized in that the width of the base region (17) of the profile rail corresponds to approximately one third of the height of the corner element (1).

5. Base according to one of claims 2 to 4, characterized in that both the base region (17) and the kink surface (19) of the U-leg are extended beyond the profile rail and as the end portions (20) on the outside or extend into the interior of the corner element.

6. Base according to one of claims 2 to 5, characterized in that the extended base region (21) arranged on the outside of the corner pieces (1) has Has jumps (22) which extend over a predetermined section over the outside of the corner pieces (1).

7. Base according to one of claims 2 to 6, characterized in that on the outside of the corner pieces (1) arranged extended base region and / or projection of the transverse elements (22) at least one passage opening can be provided.

8. Base according to one of claims 1 to 7, characterized in that each corner element (1) of the base has a bottom (2) - and cover surface (3) and two longitudinal surfaces (4,5) extending between them.

9. Base according to claim 8, characterized in that the corner elements (1) have a front (9) which have a substantially rectangular opening (28), this opening (28) corresponding to at least half of the front and adjacent to the Longitudinal surface (4) is arranged.

10. Base according to one of claims 8 to 9, characterized in that the longitudinal surface (4) facing away from the interior of the base in the installed state has a stiffening surface (8) which is angled at right angles to the rear side on an edge extending parallel to the rear side.

11. Base according to claim 10, characterized in that the stiffening surface (8) and the opening (28) arranged on the front face each other

12. Base according to one of claims 10 or 11, characterized in that the stiffening surfaces (8) arranged on the rear in the area adjacent to the cover (3) and / or bottom surface (2) have a slot-shaped recess (11, 11 ^' ). which runs parallel to the longitudinal edge of the corner piece (1).

13. Base according to one of claims 8 to 12, characterized in that the longitudinal surfaces (5) of the corner elements facing one another in the installed state (1) Die cuts have angled parallel to the front of the corner piece (1) facing each other.

14. Base according to claim 13, characterized in that the angled punch-out areas (10) are provided with through openings.

15. Base according to one of claims 8 to 14, characterized in that the bottom (2) - or cover surface (3) of each corner piece (1) has at least one passage opening.

16. Base according to one of claims 1 to 15, characterized in that the longitudinal diaphragm (7, 8) is constructed in three parts, a longitudinal diaphragm section extending between the corner elements as far as the passage openings and two covering elements (26) of substantially the same size open areas of the front surfaces of the corner pieces are placed.

17. Base according to claim 16, characterized in that the cover sections (26) are plugged on.